A computer-implemented method comprising: receiving, at a first point in time, a first data set from a user and upon receipt of the first data set: performing feature extraction on the first data set to obtain a first feature vector, generating a first integer vector representation of the first feature vector, generating, using the first integer vector representation and a master key, a user-specific key, and sending, to a remote server, a user ID together with the user-specific key.
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
A method for imaging a region of a moving blade of a wind turbine includes using a wider field-of-view (WFoV) camera to capture a plurality of WFoV images of at least part of the moving blade in a field-of-view (FoV) of the WFoV camera, determine a trigger time when an edge of the moving blade to calculate one or more NFoV image capture times when the edge of the moving blade, or a body of the moving blade, is, or will be, in the FoV of a NFoV camera, and using the NFoV camera to capture one or more NFoV images. The one or more NFoV images of the region of the moving blade may be analysed to identify any damage or defects in the moving blade without any need to interrupt the motion of the blades of the wind turbine.
G06T 7/73 - Détermination de la position ou de l'orientation des objets ou des caméras utilisant des procédés basés sur les caractéristiques
H04N 23/68 - Commande des caméras ou des modules de caméras pour une prise de vue stable de la scène, p. ex. en compensant les vibrations du boîtier de l'appareil photo
H04N 23/695 - Commande de la direction de la caméra pour modifier le champ de vision, p. ex. par un panoramique, une inclinaison ou en fonction du suivi des objets
H04N 23/698 - Commande des caméras ou des modules de caméras pour obtenir un champ de vision élargi, p. ex. pour la capture d'images panoramiques
3.
METHODS AND SYSTEMS FOR ESTABLISHING A SECURE SESSION BETWEEN A CLIENT DEVICE AND A SERVER
A method for authenticating a server to a client device, the client device comprising a Physical Unclonable Function PUF, the method comprising: generating, by the client device, one or more challenge-response pairs, wherein for each pair, the challenge is obtained by computing a first function of a random number and a first readout of the PUF, and the response in the pair is obtained by computing a second function of the random number; sending the one or more challenge-response pairs to the server; receiving, by the client device, from the server: (i) a challenge from a selected one of the challenge-response pairs; and (ii) a first Message Authentication Code MAC computed by the server using the challenge and response in the selected challenge response pair; obtaining, by the client device, a second readout of the PUF; computing, by the client device, a second MAC using the challenge received from the server and the second readout of the PUF; and in the event that the second MAC matches the first MAC, authenticating the server by the client device.
H04L 9/00 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité
H04L 9/30 - Clé publique, c.-à-d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
A radio configured for use in a TDMA scheme, the radio being configured to transmit and receive on a plurality of frequency channels, each frequency channel having a plurality of recurring time slots, wherein: for a first one of the frequency channels, a first one of the time slots is reserved for voice communication between members of a first subnetwork; for each one of the one or more other frequency channels, a second one of the time slots is reserved for voice communication between members of a respective other subnetwork; the radio being switchable between the first frequency channel and one or more of the other frequency channel(s) to enable the user of the radio to communicate with the members of the first subnetwork on the first frequency in the first time slot, and to communicate with members of the other subnetwork(s) on their respective frequencies in the second time slot.
H04W 72/0446 - Ressources du domaine temporel, p. ex. créneaux ou trames
H04B 7/26 - Systèmes de transmission radio, c.-à-d. utilisant un champ de rayonnement pour communication entre plusieurs postes dont au moins un est mobile
H04W 84/18 - Réseaux auto-organisés, p. ex. réseaux ad hoc ou réseaux de détection
H04W 4/10 - Services de messagerie instantanée vocale ou de messagerie sur appel
A method comprising: receiving a first image captured on an image sensor; obtaining a scene estimate for the first image, wherein the scene estimate comprises an estimate of the background signal for a region of space being imaged onto the sensor; storing the scene estimate in memory; receiving a plurality of successive images, wherein for each one of the successive images, the field of view is shifted with respect to the preceding image and overlaps partially with that of the preceding image; for each one of the successive images: retrieving the scene estimate from memory; subtracting the scene estimate from the image to obtain a background-subtracted image for output; updating the scene estimate based on the signal detected at the location on the image sensor to which the region of space is being imaged; and replacing the scene estimate stored in memory with the updated scene estimate.
G06T 7/194 - DécoupageDétection de bords impliquant une segmentation premier plan-arrière-plan
G06T 5/50 - Amélioration ou restauration d'image utilisant plusieurs images, p. ex. moyenne ou soustraction
G06V 10/25 - Détermination d’une région d’intérêt [ROI] ou d’un volume d’intérêt [VOI]
G06V 10/60 - Extraction de caractéristiques d’images ou de vidéos relative aux propriétés luminescentes, p. ex. utilisant un modèle de réflectance ou d’éclairage
G06V 10/75 - Organisation de procédés de l’appariement, p. ex. comparaisons simultanées ou séquentielles des caractéristiques d’images ou de vidéosApproches-approximative-fine, p. ex. approches multi-échellesAppariement de motifs d’image ou de vidéoMesures de proximité dans les espaces de caractéristiques utilisant l’analyse de contexteSélection des dictionnaires
G06V 10/764 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant la classification, p. ex. des objets vidéo
A method for imaging a region of a moving blade of a wind turbine comprises using a wider field-of-view (WFoV) camera to capture a plurality of WFoV images of at least part of the moving blade in a field-of-view (FoV) of the WFoV camera, using the captured plurality of WFoV images of at least part of the moving blade to determine a trigger time when an edge of the moving blade is, or will be, in a triggering region, using the determined trigger time and a known spatial relationship between the triggering region and a FoV of a narrower field-of-view (NFoV) camera to calculate one or more NFoV image capture times when the edge of the moving blade, or a body of the moving blade, is, or will be, in the FoV of the NFoV camera, and using the NFoV camera to capture one or more NFoV images of the region of the moving blade at the calculated one or more NFoV image capture times. The one or more NFoV images of the region of the moving blade may be analysed to identify any damage or defects in the moving blade without any need to interrupt the motion of the blades of the wind turbine. The method may comprise sequentially scanning the FoV of the NFoV camera across a plurality of radial positions relative to an axis of rotation of the moving blades of the wind turbine and, for each radial position, imaging the corresponding regions of the moving blades of the wind turbine. The method may comprise performing the sequential scanning step and the imaging step autonomously according to a pre-programmed sequence to allow the imaging of both surfaces and both edges of each moving blade of the wind turbine.
A module for a towable sonar apparatus, comprising:
a core component, comprising at least one sensor and a first connection part;
a casing, comprising:
a tubular member provided around the core component;
a second connection part detachably connected to the first connection part of the core component.
B63B 35/44 - Constructions, magasins, plates-formes de forage ou ateliers flottants, p. ex. portant des appareils séparateurs huile-eau
B63B 73/50 - Construction ou assemblage de navires ou de structures marines, p. ex. coques ou plateformes en pleine mer caractérisés par les procédés de formage, p. ex. fabrication de sous-ensembles incurvés
B63B 3/00 - Coques caractérisées par leur structure ou leurs éléments constitutifs
B33Y 80/00 - Produits obtenus par fabrication additive
8.
Casing for a Towable Sonar Apparatus and a Method of Manufacturing a Casing for a Towable Sonar Apparatus
There is provided a casing for a towable sonar apparatus, comprising:
a tubular member, wherein the tubular member comprises a foam member or a mesh member;
a first layer around the tubular member, wherein the first layer is porous.
B63G 8/39 - Disposition des instruments de veille sonique, p. ex. basse fréquence, sonar
B63B 59/04 - Moyens pour éviter la salissure de la coque
B63B 79/10 - Surveillance des caractéristiques ou des paramètres de fonctionnement des navires en opération utilisant des capteurs, p. ex. des capteurs de pression, des jauges de contrainte ou des accéléromètres
B63B 5/24 - Coques caractérisées par leur construction en un matériau non métallique faites principalement de plastiques
A computer-implemented method comprising: receiving data to be input to a machine learning algorithm, the output from the machine learning algorithm to be used in carrying out a task; determining a degree of dissimilarity between the received data and training data that has been used to train the machine learning algorithm; determining, based on the degree of dissimilarity, whether the machine learning algorithm is likely to achieve a required level of performance when processing the received data; and in the event that it is determined that the machine learning algorithm is unlikely to reach the required level of performance, modifying the way in which the task is carried out.
A system comprising: a thermal imaging camera for detecting thermal radiation from a scene; a first calibration element and a second calibration element, wherein the first and the second calibration elements are coupled with the thermal imaging camera so as to be located or locatable in a field of view of the thermal imaging camera and configurable to be at different temperatures, in use, and at least one measuring device configured to measure the different temperatures of the first and the second calibration elements for calibrating the thermal imaging camera based on the different temperatures of the first and the second calibration elements measured by the measuring device and corresponding thermal imaging of the first and second calibration elements by the thermal imaging camera.
G01J 5/52 - Pyrométrie des radiations, p. ex. thermométrie infrarouge ou optique en utilisant la comparaison avec des sources de référence, p. ex. pyromètres à disparition de filament
G01J 5/00 - Pyrométrie des radiations, p. ex. thermométrie infrarouge ou optique
A computer implemented method of providing connectivity between two or more primary assets, each primary asset comprising a hardware component or a software component, the method comprising receiving a request to provide connectivity between the primary assets; accessing a repository that stores a list of assets and metadata associated with each asset; using the metadata in the repository to generate an hierarchical list of assets; rationalising the hierarchical list of assets by selecting a group of assets from the hierarchical list of assets to be used in providing connectivity between the primary assets; and generating, based on operating parameters of each asset in the group of assets, a deployment plan for the group of assets, wherein the deployment plan defines settings and/or connections to be used between the assets in the group of assets in order to provide connectivity between the two or more primary assets.
A guidance head (8) for use in directing a beam (16) of energy towards a target comprises one or more beam-steering elements (30,32) for directing a beam of energy towards a projected position on an object in a scene, one or more beam-steering element sensors (38,40), a display (26), and a processing resource (24), wherein each beam-steering element has a corresponding beam-steering configuration, each beam-steering element sensor is configured to generate an electrical signal representative of the beam-steering configuration of the corresponding beam-steering element, and the processing resource is configured to receive image data representative of the scene and cause the display to display an image of the scene that is based on the received image data and which includes an aiming mark displayed at a position in the image of the scene based at least in part on the one or more electrical signals representative of the beam-steering configuration of the one or more beam-steering elements. The guidance head may be suitable for a weapon system such as a guided missile weapon system, a directed energy weapon system, a dazzle weapon system, or may be suitable for a target designator.
G06T 7/70 - Détermination de la position ou de l'orientation des objets ou des caméras
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
A head utility system (20) comprising: a headset (22) comprising: a first power or data connector (28) for connecting to an off-headset power or data system (30); and a second power or data connector (38); the head utility system further comprising: headwear (24) for wearing over the headset, the headwear comprising: a headwear power or data connector (44) for connecting to the second power or data connector; wherein the second connector and the headwear connector are arranged to be releasably connected when the headwear is worn over the headset, such that power or data can be transferred between the headset and the headwear.
A support for locating and supporting an power and/or data connector with respect to a wearable item, the support comprising: a coupling configured to be releasably attachable to a wearable item for locating the support on the wearable item during use; and a body comprising: an interface configured to support an power and/or data connector during use; wherein the support is configured, in use, to be releasably engageable with a wearable item and a power and/or data connector to locate and support the power and/or data connector with respect to the wearable item, such that the power and/or data connector is connectable with a further power and/or data connector.
Trajectory estimate for a sub-sonic projectile can be derived from sampling a wake contribution of an acoustic signal detected at a multi-detector array. The wake contribution is sampled, in time, and the samples are processed to determine a bearing estimate for the projectile from which the acoustic wake derives.
G01S 5/28 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores en coordonnant des lignes de position de forme différente, p. ex. hyperboliques, circulaires, elliptiques ou radiales
G01S 3/80 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 5/18 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 15/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes acoustiques, p. ex. systèmes sonar
16.
METHODS AND SYSTEMS FOR VALIDATING DATA IN A DISTRIBUTED COMPUTING NETWORK
A computer-implemented method for validating data in a distributed computing network, the network comprising a plurality of nodes, the method comprising generating, by a node in the network, a ciphertext by encrypting a message using (i) a public key of a public/private key pair and (ii) data that is to be validated, transmitting, from the node that generated the ciphertext, a request to one or more other node(s) in the network to decrypt the ciphertext, the one or more other nodes being configured to decrypt the ciphertext using a token generated using (i) the private key of the public/ private key pair and (ii) information against which the data is to be validated, and determining, based on the result of decrypting the ciphertext, whether or not the data is valid.
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
A field of view detector comprising an orientation sensor for determining an orientation of the field of view detector, a location sensor for determining a location of the field of view detector, and a communication system, the field of view detector configured to communicate the orientation and location of the field of view detector to a central device using the communications system.
There is provided a computer-implemented method of determining a position of a vehicle 10 within a transport network. The method comprises obtaining track geometry data indicating track geometry of at least a part of the transport network; receiving first sensor data from an inertial measurement unit 26 mounted to the vehicle 10; executing a Bayesian estimation filter algorithm 34 to predict a position of the vehicle, wherein the Bayesian estimation filter algorithm comprises a process model, the process model comprising a strapdown inertial navigation algorithm 47, and wherein the strapdown inertial navigation algorithm 47 generates data indicative of the predicted position of the vehicle based at least upon the first sensor data and the track geometry data such that the predicted position of the vehicle lies on a track defined by the track geometry data; receiving second sensor data from a sensor 25, 27 other than an inertial measurement unit 26, wherein the sensor is mounted to the vehicle; executing the Bayesian estimation filter algorithm 34 to update the predicted position of the vehicle based at least upon the second sensor data; and generating an output indicative of a position of the vehicle within the transport network based upon at least one of the predicted position of the vehicle and the updated predicted position of the vehicle.
G01C 21/16 - NavigationInstruments de navigation non prévus dans les groupes en utilisant des mesures de la vitesse ou de l'accélération exécutées à bord de l'objet navigantNavigation à l'estime en intégrant l'accélération ou la vitesse, c.-à-d. navigation par inertie
G01C 21/30 - Mise en coïncidence avec des cartes ou des contours
B61L 25/02 - Indication ou enregistrement de la position ou de l'identité de véhicules ou de trains
19.
METHOD AND APPARATUS FOR DETERMINING A POSITION OF A VEHICLE
There is provided a computer-implemented method of determining a position of a vehicle within a transport network. The method comprises: obtaining track geometry data indicating track geometry of at least a part of the transport network; determining, based upon the track geometry data, that the vehicle is approaching a junction; determining, based upon the track geometry data, a plurality of route options from the junction; generating a plurality of Bayesian estimation filter algorithms 34 each associated with a respective one of the plurality of route options and configured to estimate a position of the vehicle based upon the track geometry data indicative of the associated route option, wherein the plurality of Bayesian estimation filter algorithms are configured to output data indicative of probabilities of the vehicle taking the associated route options; monitoring the output of the plurality of Bayesian estimation filter algorithms as the vehicle passes through the junction; and determining the route option taken by the vehicle by selecting one of the plurality of route options which presents the highest probability based upon the output of the plurality of Bayesian estimation filter algorithms.
B61L 25/02 - Indication ou enregistrement de la position ou de l'identité de véhicules ou de trains
G01C 21/16 - NavigationInstruments de navigation non prévus dans les groupes en utilisant des mesures de la vitesse ou de l'accélération exécutées à bord de l'objet navigantNavigation à l'estime en intégrant l'accélération ou la vitesse, c.-à-d. navigation par inertie
G01C 21/20 - Instruments pour effectuer des calculs de navigation
G01C 21/30 - Mise en coïncidence avec des cartes ou des contours
20.
Methods and systems for determining one or more actions to carry out in an environment
A computer-implemented method for generating a simulated environment in which the behaviour of one or more individuals is modelled, the method comprising: defining a state of the environment at a first point in time; receiving an input defining an action to be performed by one or more individuals in the simulated environment; and in response to the input, updating the state of the environment based on a social-ecological model, wherein the social-ecological model simulates the behaviour of people within the environment and how the people respond to changes associated with said action, wherein the social-ecological model is a machine learning model that is trained using data reflective of real-life past events, the social-ecological model being configured to accept as input a parameterised dataset describing the state of the environment at the first point in time and to output an updated dataset that describes the updated state of the environment.
A computer-implemented method for generating a simulated environment in which the behaviour of one or more individuals is modelled, the method comprising: defining a state of the environment at a first point in time;receiving an input defining an action to be performed by one or more individuals in the simulated environment; andin response to the input, updating the state of the environment based on a social-ecological model, wherein the social-ecological model simulates the behaviour of people within the environment and how the people respond to changes associated with said action, wherein the social-ecological model is a machine learning model that is trained using data reflective of real-life past events, the social-ecological model being configured to accept as input a parameterised dataset describing the state of the environment at the first point in time and to output an updated dataset that describes the updated state of the environment.
G09B 9/00 - Simulateurs pour l'enseignement ou l'entraînement
G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation
Detection of a trajectory of a supersonic projectile is carried out derived from a plurality of acoustic detection signals. From these acoustic detection signals, two or more shockwave-derived trajectory estimates can be derived. Further, a wake derived trajectory bearing estimate can be derived, from which disambiguation of the shockwave-derived trajectory estimates can be effected.
G01S 3/808 - Systèmes pour déterminer une direction ou une déviation par rapport à une direction prédéterminée utilisant des transducteurs espacés et mesurant la différence de phase ou de temps entre les signaux provenant de ces transducteurs, c.-à-d. systèmes à différence de parcours
G01S 11/14 - Systèmes pour déterminer la distance ou la vitesse sans utiliser la réflexion ou la reradiation utilisant des ondes ultrasonores, sonores ou infrasonores
There is provided systems and methods for mitigating interference from an interference signal. In one implementation the system comprises cancellation circuitry configured to: receive a first signal from a first antenna, the first signal comprising an interference component deriving from the interference signal and a desired component deriving from a desired signal; and receive a second signal comprising an interference component deriving from the interference signal and received at one or more of a different antenna or a different frequency to the first signal. The interference component in the second signal is stronger than that the interference component in the first signal. The cancellation circuitry is further configured to derive a cancellation signal from the second signal; generate an output signal by subtracting the cancellation signal from the input signal to substantially remove the interference component from the first signal; and output the output signal.
H04B 1/12 - Montages de neutralisation, d'équilibrage ou de compensation
H01Q 3/26 - Dispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la phase relative ou l’amplitude relative et l’énergie d’excitation entre plusieurs éléments rayonnants actifsDispositifs pour changer ou faire varier l'orientation ou la forme du diagramme de directivité des ondes rayonnées par une antenne ou un système d'antenne faisant varier la distribution de l’énergie à travers une ouverture rayonnante
A safety and arming device for a munition is operable to arm and initiate a munition dependent on determining separation from a munition platform, determining detection of free fall of the device for a first time period following separation, initiating a roll manoeuvre of the munition and determining detection of the execution of the roll manoeuvre within a second time period, and generating a munition firing signal, dependent on detection of all of separation, free fall, and the roll manoeuvre.
F42C 15/00 - Dispositifs d'armement des fuséesDispositifs de sécurité pour empêcher l'explosion prématurée des fusées ou des charges
F42C 11/06 - Fusées électriques à retard déterminé par circuits électriques
F42C 15/40 - Dispositifs d'armement des fuséesDispositifs de sécurité pour empêcher l'explosion prématurée des fusées ou des charges dans lesquels l'action de sécurité ou d'armement s'effectue électriquement
F42C 15/196 - Dispositifs d'armement des fuséesDispositifs de sécurité pour empêcher l'explosion prématurée des fusées ou des charges dans lesquels le support d'un élément de la chaîne pyrotechnique ou explosive est mobile le support étant rotatif dans un plan parallèle à l'axe longitudinal du projectile par l'action de forces centrifuges ou d'inertie sur le support-même, p. ex. le support étant muni de masses excentriques ou son centre de gravité étant excentré
25.
SYSTEMS AND METHODS FOR PROVIDING CONNECTIVITY BETWEEN TWO OR MORE HARDWARE AND SOFTWARE COMPONENTS
A computer implemented method of providing connectivity between two or more primary assets, each primary asset comprising a hardware component or a software component, the method comprising receiving a request to provide connectivity between the primary assets; accessing a repository that stores a list of assets and metadata associated with each asset; using the metadata in the repository to generate an hierarchical list of assets; rationalising the hierarchical list of assets by selecting a group of assets from the hierarchical list of assets to be used in providing connectivity between the primary assets; and generating, based on operating parameters of each asset in the group of assets, a deployment plan for the group of assets, wherein the deployment plan defines settings and/or connections to be used between the assets in the group of assets in order to provide connectivity between the two or more primary assets.
In accordance with embodiments of the present disclosure, a flextensional transducer for underwater operation includes a driving element and a stave. The stave is made from a material with elastic properties and has a porous structure. The porous structure is adapted to be modelled such that when in use, said porous structure of the stave is of an arbitrary alignment with respect to, for instance, the driving element, and has a degree of porosity. The degree of porosity is such that the elastic properties and vibrational frequency response of the stave can be customised with respect to its intended use.
H04R 31/00 - Appareils ou procédés spécialement adaptés à la fabrication des transducteurs ou de leurs diaphragmes
G10K 9/12 - Dispositifs dans lesquels le son est produit par la vibration d'un diaphragme ou un élément analogue, p. ex. cornes de brume, avertisseurs de véhicule ou vibreurs fonctionnant électriquement
A display system is described, for placement of a display above, below or beside the normal gaze of a user, to impart simple information to the user by means of selective driving of a plurality of light emitting elements.
A head utility system (20) comprising: a headset (22) comprising: a first power or data connector (28) for connecting to an off-headset power or data system (30); and a second power or data connector (38); the head utility system further comprising: headwear (24) for wearing over the headset, the headwear comprising: a headwear power or data connector (44) for connecting to the second power or data connector; wherein the second connector and the headwear connector are arranged to be releasably connected when the headwear is worn over the headset, such that power or data can be transferred between the headset and the headwear.
APPARATUS FOR CARRYING BY A PERSON AND CONFIGURED TO PROVIDE A POWER AND/OR DATA CONNECTION TO ONE OR MORE ELECTRONIC DEVICES ALSO CARRIED BY THE PERSON
Embodiments described herein relate to an apparatus (100) for carrying by a person and configured to provide a power and/or data connection to one or more electronic devices also carried by the person, the apparatus comprising: a housing (150); a cable (114) for forming a connection between the housing and one or more of the electronic devices, the cable comprising a connector (112) for connecting to a port contained within the housing so as to allow for transfer of power and/or data between the housing and the one or more electronic devices; and a connector assembly (110) comprising a sleeve (120) in which the cable (114) is received, the sleeve being insertable into an aperture (162) in the housing, so as to connect the connector to the port; wherein the sleeve (120) comprises a first portion arranged to interface with the internal walls of the aperture when the connector is connected to the port.
Methods and devices use information from the original SAR images to provide measurements that can be applied to corresponding change detection products. This produces reliable registration and alignment for the change products even when the imaging geometry is significantly changed. A method of processing synthetic aperture radar, SAR, image data comprising a plurality of frames of SAR image data for each of a plurality of image geometries; for each image geometry, applying change detection to the frames of SAR image data corresponding to that image geometry to produce a corresponding plurality of change products; selecting a plurality of said acquired frames as reference frames, one in respect of each image geometry; applying a multilook SAR process to the reference frames to produce a multilook SAR product, the multilook SAR process comprising at least one processing stage comprising measuring a property of the data contained in the reference frames and applying a transformation to the data governed by the measured property; and applying a multilook change process to the change products, the multilook change process comprising applying the same transformation as in the multilook SAR process, to the change products, to produce a multilook change product.
G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
31.
Magnetic phase transition exploitation for enhancement of electromagnets
An electromagnet can be used to provide a controlled magnetic field, for example for the purpose of minesweeping. The electromagnet is constructed of a material which has a Curie temperature, such that the electromagnet can be stored at a temperature above the Curie temperature, but deployed below the Curie temperature in use.
B63G 7/06 - Moyens de dragage des minesMoyens de destruction des mines du type électromagnétique
H01F 7/20 - Électro-aimantsActionneurs comportant des électro-aimants sans armature
H01F 1/147 - Alliages caractérisés par leur composition
H01F 1/34 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux substances non métalliques, p. ex. ferrites
32.
Missile for use in a laser beam riding missile guidance system
A method for aligning a missile with a target in a laser beam riding missile guidance system, the system including a laser transmitter for generating and projecting a laser information field towards the target and an optical sight for aiming the laser beam towards the target, the method comprising: determining a point in the laser information field with which the missile is currently aligned; determining a distance of the target from the missile; determining an angular displacement between the missile's current direction of travel and the direction in which the target lies from the missile; determining, based on said distance and angular displacement, a new point in the laser information field with which the missile should be aligned to reach the target; and controlling missile guidance systems on board the missile to bring the missile into alignment with the new point in the laser information field.
F41G 7/36 - Systèmes de commande de guidage pour missiles autopropulsés basés sur des données prédéterminées de la position de la cible utilisant des références inertielles
33.
A METHOD OF DATA TRANSFER, A METHOD OF CONTROLLING USE OF DATA AND A CRYPTOGRAPHIC DEVICE
A method of data transfer from a tenant to a service provider comprises encrypting the data with a public key of a key pair generated by a secure device within the service provider system. The data thus cannot be accessed by the service provider during transmission. The data is generated with a corresponding access control list, which specifies that a valid certificate must be presented in order to grant a particular use of the data once stored. The tenant can thus retain control of the use of the data even though it has been transferred out of the tenant system. A method of controlling use of data securely stored in the service provider system comprises issuing a use certificate having an expiry time to the party requesting use of the data. The use certificate must be validated before use of the stored data is granted. This enables the tenant to grant use of the stored data for a limited time period.
G06F 21/62 - Protection de l’accès à des données via une plate-forme, p. ex. par clés ou règles de contrôle de l’accès
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
There is provided a method and device for producing a radar image, the device comprising a controller configured to receive a set of images of an object to be imaged taken by an optical sensor from varying positions relative to the object, receive a sequence of radar measurements of the object taken by a radar sensor from varying positions relative to the object, determine the trajectory of the radar sensor relative to the object based on the images, and form a synthetic aperture radar, hereinafter referred to as SAR, image of the object based on the images, the radar measurements and the determined trajectory.
G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
G01S 13/86 - Combinaisons de systèmes radar avec des systèmes autres que radar, p. ex. sonar, chercheur de direction
Embodiments described herein simplify the recognition of objects in synthetic aperture radar (SAR) imagery. This may be achieved by processing the image in order to make the shadow caused by the object appear more similar to the object. Alternatively, this may be achieved by processing the image in order to make the layover caused by the object appear more similar to the object. Manipulation of the shadow caused by the object and the layover caused by the object may comprise altering the aspect ratio of the image, and in the case of manipulating the shadow caused by the image, may further comprise transforming the image by reflection or rotation. The aspect ratio of the image may be altered based on information about the image collection geometry, obtained by the SAR.
G01S 13/90 - Radar ou systèmes analogues, spécialement adaptés pour des applications spécifiques pour la cartographie ou la représentation utilisant des techniques d'antenne synthétique
G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
An eyeguard for use with optical devices such as binoculars or rifle scopes. The eyeguard comprises an eyepiece defining an aperture and a first axis; a device piece for being located adjacent an optical device during use; wherein the eyepiece and device piece are configured to move relative to each other along the first axis in response to the application of a force; a driver configured to move relative to one of the eyepiece and the device piece in response to relative movement of the eyepiece and the device piece; and a leaf arranged in a plane, the plane intersecting the first axis; wherein in response to movement of the driver the leaf is configured to move within the plane between a closed arrangement, in which passage of light between the optical device and a user through the aperture is obscured, and an open arrangement, in which the passage of light between the optical device and the user through the aperture is no longer obscured.
An optical apparatus comprises an optical resonator defining an optical resonator path for an optical resonator beam and an optical beam expander optically coupled to the optical resonator, the optical beam expander defining an optical beam expander path for an optical beam expander beam. The optical resonator path and the optical beam expander path may be configured such that the optical resonator beam and the optical beam expander beam at least partially intersect. Such an optical apparatus may be configured for use as a laser target designator or a laser range finder.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/081 - Structure ou forme des résonateurs optiques ou de leurs composants comprenant trois réflecteurs ou plus
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/109 - Multiplication de la fréquence, p. ex. génération d'harmoniques
38.
Video compression with increased fidelity near horizon
A device and method for compressing image data. Image data is received comprising one or more images recorded by a camera. Attitude data is received indicating the attitude of the camera when each of the one or more images was recorded. In each of the one or more images, a region of interest is defined, the region of interest being bounded by a boundary, the boundary of the region of interest being based on the attitude data for the respective image and defining a section of the image within the region of interest and a section of the image outside the region of interest. Each of the one or more images is compressed, wherein the compression ratio applied to the section of the image outside the region of interest is higher than that applied to the section of the image within the region of interest.
H04N 19/167 - Position dans une image vidéo, p. ex. région d'intérêt [ROI]
H04N 19/17 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’unité de codage, c.-à-d. la partie structurelle ou sémantique du signal vidéo étant l’objet ou le sujet du codage adaptatif l’unité étant une zone de l'image, p. ex. un objet
H04N 19/625 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant un codage par transformée utilisant une transformée en cosinus discrète
39.
CONTROLLING EMISSION OF PASSIVE Q-SWITCHED LASER PULSES
A method for controlling emission of optical pulses from a passive Q-switched laser apparatus comprises pumping a gain medium of a passive Q-switched laser apparatus for the emission of a plurality of Q-switched optical pulses from the laser apparatus. The method may further comprise pumping the gain medium so as to maintain an optical gain provided by the gain medium above an unpumped optical gain level for the duration of a time period from emission of one Q-switched optical pulse to emission of a subsequent Q-switched optical pulse. The method may further comprise varying a rate of pumping of the gain medium between emission of the one Q-switched optical pulse and emission of the subsequent Q-switched optical pulse so as to control the temporal separation between the one Q-switched optical pulse and the subsequent Q-switched optical pulse. The gain medium may comprise a solid state gain medium. The method may comprise optically pumping the gain medium.
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
G01S 17/08 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement
H01S 3/102 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 3/113 - Commutation-Q utilisant des absorbeurs saturables dans la cavité
H01S 3/17 - Matériaux solides amorphes, p. ex. verre
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
H01S 3/131 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
40.
METHODS AND SYSTEMS FOR ALERTING A USER TO THE PRESENCE OF A FAULT IN AN ELECTROMECHANICAL SYSTEM IN A RAILWAY INFRASTRUCTURE
A computer-implemented method for alerting a user to the presence of a fault in an electromechanical system in a railway infrastructure, the method comprising: receiving electrical usage data indicative of the value of an electrical usage parameter associated with the electromechanical system; receiving temperature data indicative of the present temperature of the electromechanical system; determining, based on a predetermined relationship between the electrical usage parameter and the temperature, whether or not the value of the electrical usage parameter is indicative of a fault in the electromechanical system and if so, issuing an alert to indicate the presence of the fault.
B61L 23/04 - Dispositifs de commande, d'avertissement ou autres dispositifs de sécurité le long de la voie ou entre les véhicules ou les trains pour contrôler l'état mécanique de la voie
Control of a plurality of electronically commutated motors is effected using a control unit and a power unit. The power unit enables the provision of commutation signals to each controlled motor. The control unit comprises a DSP and a FPGA. An input memory of the FPGA is mapped to the DSP. In use, the DSP determines motor repositioning signals, on the basis of a received motor position demand signal describing demanded motor positions and the encoded motor position data, and loads the motor repositioning signals into the input memory of the FPGA. The FPGA is operable to generate motor driving current signals for driving the motors into the demanded motor positions, on the basis of the motor repositioning signals and motor phase current samples collected by the power unit, and to output the motor driving current signals to the power unit.
G01M 1/38 - Machines ou dispositifs combinés pour déterminer et corriger à la fois le balourd
G05B 13/00 - Systèmes de commande adaptatifs, c.-à-d. systèmes se réglant eux-mêmes automatiquement pour obtenir un rendement optimal suivant un critère prédéterminé
G05B 15/00 - Systèmes commandés par un calculateur
A control unit is provided with a selector and a plurality of value indicators. One of the value indicators provides a coarse indication of an existing value of an adjustable control quantity. The other value indicators are in another state, distinguishable from the value indicating state. A rotary adjustor provides a manual adjustment facility for a user. Selection of the selector puts the adjustable control quantity in an adjustment mode. In this adjustment mode, rotary actuation of the rotary adjustor allows adjustment of the control quantity. A new value of the control quantity is indicated by a change in the display states of the value indicators.
G06F 3/0362 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection des translations ou des rotations unidimensionnelles [1D] d’une partie agissante du dispositif de pointage, p. ex. molettes de défilement, curseurs, boutons, rouleaux ou bandes
B64D 43/00 - Aménagements ou adaptations des instruments
G06F 3/0484 - Techniques d’interaction fondées sur les interfaces utilisateur graphiques [GUI] pour la commande de fonctions ou d’opérations spécifiques, p. ex. sélection ou transformation d’un objet, d’une image ou d’un élément de texte affiché, détermination d’une valeur de paramètre ou sélection d’une plage de valeurs
H03J 1/04 - Dispositifs indicateurs avec moyens d'indication optique
A signal detector for detecting an information component of a passive radar detection signal, comprises a sampler operable to obtain a sample segment, in time domain, of a radar detection signal, a signal processor operable to identify a relatively high power periodic component of the sample segment signal spectrum in contrast to a relatively low power information component of the sample segment signal spectrum, and a signal rejector operable to window the detection signal with respect to the identified periodic component, to retain parts of the signal not interfered by said periodic component.
G01S 13/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p. ex. systèmes radarSystèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
G01S 7/41 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant l'analyse du signal d'écho pour la caractérisation de la cibleSignature de cibleSurface équivalente de cible
G01S 13/52 - Discrimination entre objets fixes et mobiles ou entre objets se déplaçant à différentes vitesses
The disclosure concerns the establishment of a network based system for executing information transactions. An identity assertion, confirmed by one computer in the network, can be distributed to other computers in the network, on the basis of trust based relationships between computers. Trust based relationships between computers can be delegated along trust pathways linking computers not in direct communication in the network.
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
A man-worn power and data harness. The harness is intended to facilitate the supply of power and data around a user's, and in particular a soldier's, person. Furthermore, the harness is intended to be compatible with a tiered structure of soldier load carriage and protection. The harness may comprise: at least one brace for passing over a user's shoulder, each brace comprising at least one cable; and a belt for at least partially encircling a user's waist, the belt comprising at least one cable;wherein each cable comprises power and/or data cabling, each brace is connected at both ends to the belt and each brace comprises at least one release clip, the release clip being for disconnecting and reconnecting the brace;each brace may further comprise at least one attachment device to attach the brace to an item worn underneath the harness. Furthermore, a harness and load carriage may be provided. Methods for the use of such a harness in combination with a tiered structure for soldier load carriage and protection may also be provided.
A photoconductive switch comprising a photoconductive material and first and second contacts provided on said photoconductive material, wherein said first and second contacts comprise a plurality of interdigitated tracks, the tracks of each contact being separated from the tracks of the other contact by a photoconductive gap, the tracks being curved such that the minimum photoconductive gap measured in a first direction remains substantially similar regardless of the orientation of the first direction.
H01L 31/09 - Dispositifs sensibles au rayonnement infrarouge, visible ou ultraviolet
H03K 17/78 - Commutation ou ouverture de porte électronique, c.-à-d. par d'autres moyens que la fermeture et l'ouverture de contacts caractérisée par l'utilisation de composants spécifiés par l'utilisation, comme éléments actifs, de dispositifs opto-électroniques, c.-à-d. des dispositifs émetteurs de lumière et des dispositifs photo-électriques couplés électriquement ou optiquement
47.
Laser diode side pumping of an elongated solid-state laser without focusing/optics
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
A tool provides a means of engaging with a device embedded in a laminar element. The tool is intended to engage with fixing bores of the device which would otherwise accommodate fixing means such as bolts. The tool comprises one or more engagement members and an engagement surface. The or each engagement member projects from the engagement surface. The or each engagement member comprises a retractable pin, and a resilient collar captively engaged on the pin. Retraction of the or each pin will cause the corresponding collar to be urged against the engagement surface, which will lead to deformation of the collar and a consequent urging radially of material of the collar, relative to the pin. This radial urging outwards can be used to engage the collar against the surface defining the fixing bore, to provide an interference fit which can then be used to pull the device away from the laminar element.
B25B 9/00 - Outils de serrage tenus à la main autres que ceux prévus au groupe
B25B 27/02 - Outils à main ou outillage d'établi, spécialement conçus pour assembler ou séparer des pièces ou des objets, que cela entraîne ou non une certaine déformation, non prévus ailleurs pour assembler des objets par ajustage à la presse, ou pour les détacher
B25B 27/06 - Outils à main ou outillage d'établi, spécialement conçus pour assembler ou séparer des pièces ou des objets, que cela entraîne ou non une certaine déformation, non prévus ailleurs pour assembler des objets par ajustage à la presse, ou pour les détacher pour mettre en place ou extraire des chemises ou des bagues de roulement
An acoustic detector provides a planar arrangement of microphones. A windshield is arranged over the microphones, with a view to reducing the impact of environmental effects. A void is therefore defined over the microphones, and the interior surface of the windshield, which defines the void, is shaped suitably to reduce the potential for acoustic waves propagating within the void to reflect back onto the microphones.
H04R 1/40 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en combinant plusieurs transducteurs identiques
G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe
A control unit is provided with a selector and a plurality of value indicators. One of the value indicators provides a coarse indication of an existing value of an adjustable control quantity. The other value indicators are in another state, distinguishable from the value indicating state. A rotary adjustor provides a manual adjustment facility for a user. Selection of the selector puts the adjustable control quantity in an adjustment mode. In this adjustment mode, rotary actuation of the rotary adjustor allows adjustment of the control quantity. A new value of the control quantity is indicated by a change in the display states of the value indicators.
H03J 1/04 - Dispositifs indicateurs avec moyens d'indication optique
G09G 5/00 - Dispositions ou circuits de commande de l'affichage communs à l'affichage utilisant des tubes à rayons cathodiques et à l'affichage utilisant d'autres moyens de visualisation
51.
Method of, and apparatus for, furnishing information to determine the position of a body
To determine two positional co-ordinates, of a point (D) within a space, a beam (10) a radiation is caused to illuminate a part of the space and is deflected cylindrically over the space, the beam being modulated in phase with the cyclical movement such that the radiation incident upon the point (D) includes enough information to identify the point. Embodiments with rotational (r, θ) and Cartesian (x, y) co-ordinate axes are disclosed.
Missile guidance involving projection of laser light to define a Laser Information Field (LIF) is augmented by interposition of information pulses, interleaved between laser emissions establishing the LIF. Information pulses encode further information for receipt by a missile, such as an angle of roll of a missile launch platform from which the LIF is emitted.
A side pumped laser comprises an elongated gain medium (10) provided between an output coupler (20) and a counter reflector(15) and a pump source(65) configured to provide radiation to the gain medium (10) along a side axis of the gain medium, wherein the laser is configured such that radiation from the pump source is directly incident on the gain medium; and the pump source is provided proximate, adjacent or in contact with the gain medium. The laser material and compositions, geometries and dimensions are designed to both maximise laser performance and to permit the use of construction techniques commonplace in the production of equipment designed for optical telecoms systems to facilitate low cost high volume and miniaturisation. The elongated gain medium (10) may have a polygonal cross-section with a non-coated side surface (55) receiving pump light emitted by a laser diode bar (65) while the other, non-emitting surfaces are coated with for example a gold coating (60) for pump light recycling and cooling of the gain medium by heat conduction. The counter reflector (15) may be provided on one facet of a passive Q-switch (30) and the output coupler (20) on a facet (50b) of the gain medium (10).
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
H01S 3/094 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente
H01S 3/113 - Commutation-Q utilisant des absorbeurs saturables dans la cavité
An optical cell and systems such as lasers, optical amplifiers, interferometers, spectrometers, delay lines comprising said optical cell are described. The optical cell comprises at least one telescope and is configured such that light provided to the optical cell makes at least one transit through the telescope in both a first or forward direction and a second or reverse direction opposite to the first or forward direction before exiting from the cell. In embodiments, the telescope is a folded telescope (10), the folded telescope comprising a first retro-reflector (15), and at least one positive optically powered surface (20); and the optical cell further comprises at least one counter reflector (30), wherein the first retro-reflector and the at least one counter reflector are configured to define a cavity or chamber therebetween; at least one input (40) for allowing light to be input to the cavity; and at least one output (45) for allowing light to exit from the cavity.
A double ridge horn antenna has open sides between its mouth and a point where a transmission line is coupled to the double ridge structure, in an embodiment, the horn antenna is formed from two parts which when attached together form the double ridge structure.
An aircraft radio system comprising a plurality of radios interconnected by a digital communications network, each radio having a transceiver and a dedicated processor platform, the aircraft radio system being configured to cause the dedicated processor platforms to constitute a virtual processing environment for the aircraft radio system. There is also an aircraft radio system comprising a plurality of discrete radios interconnected by a digital communications network, each radio having a transceiver, a dedicated processor platform and a server configured to support communications over the network using PPPoE, Point to Point Protocol over Ethernet, to provide a common digital interface between an aircraft domain and the radios for plural types of communication.
G01C 23/00 - Instruments combinés indiquant plus d’une valeur de navigation, p. ex. pour l’aviationDispositifs de mesure combinés pour mesurer plusieurs variables du mouvement, p. ex. la distance, la vitesse ou l’accélération
B64D 11/00 - Arrangements pour passagers ou équipageInstallations de postes de pilotage non prévues ailleurs
A laser resonator comprising: at least one output coupler; at least one end reflector; a retroreflector; a telescope; a gain medium; wherein the telescope is a common telescope provided in a beam path between the retro reflector and both the end reflector and the output coupler.
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/081 - Structure ou forme des résonateurs optiques ou de leurs composants comprenant trois réflecteurs ou plus
H01S 3/106 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande de dispositifs placés dans la cavité
H01S 3/115 - Commutation-Q utilisant des dispositifs électro-optiques dans la cavité
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
A method for use in controlling a passively Q-switched laser apparatus (110) comprises triggering pumping of a passively Q-switched laser apparatus at a pump trigger time, measuring an emission delay between the pump trigger time and a time of emission of a Q-switched optical pulse from the laser apparatus. The method further comprises using the measured emission delay and a target time for the emission of a further Q-switched optical pulse from the laser apparatus to determine a further pump trigger time. The method may be used for improving the timing of emission of Q-switched optical pulses and may, in particular, serve to suppress pulse-to-pulse timing jitter in particular, though not exclusively, for laser target designation. The laser comprises an end mirror (122), an active gain medium (126), a passive Q-switch (128), an output coupler (124), a beam splitter (146), a photodetector 144), the electrical signal (148) of which is evaluated by a controller (140). The controller provides information to the laser diode driver (132) which drives the laser diode (130) emitting light (136) for pumping the active gain (126). Jitter in the repetition rate of the passively Q-switched laser can be reduced by pump power control.
H01S 3/113 - Commutation-Q utilisant des absorbeurs saturables dans la cavité
H01S 3/131 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
H01S 3/13 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude
The invention relates to a pumping system (5) for pumping a gain medium of a laser, the pumping system (5) comprising a radiation source, the radiation source comprising a plurality of emitters (10a, 10b, 10c, 10d, 10e), wherein at least one of the emitters is configured to produce radiation having a different wavelength or a different band of wavelengths to at least one other of the emitters at a given temperature.
H01S 3/094 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente
H01S 3/131 - Stabilisation de paramètres de sortie de laser, p. ex. fréquence ou amplitude par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 5/40 - Agencement de plusieurs lasers à semi-conducteurs, non prévu dans les groupes
H01S 5/068 - Stabilisation des paramètres de sortie du laser
60.
STABLE THERMAL LENS IN A Q- SWITCHED SOLID-STATE LASER BY PUMP LIGHT CONTROL
The invention relates to a pulsed laser apparatus comprising a rod- type solid-state gain medium (15) and at least one energy source for providing energy to the gain medium, wherein the apparatus is configured to selectively provide thermal compensation energy from the energy source to the gain medium when the thermal load of the gain medium and/or a pulse rate of the apparatus is below an optimum value. A transverse pumping scheme may be used with laser diode (35) pumping and being controlled by a pump diode driver (40). The resonator comprises further a HR mirror (30) and an output coupler (20) and a passive Q-switch (25). The curvature of the output coupler is chosen to realize a stable resonator for the gain medium (15) having a constant thermal lens. Between the pump pulses (60) resulting in lasing, additional pump pulses (70a-e) are provided with the laser being below threshold but keeping the thermal lens inside the gain medium constant.
H01S 3/102 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
H01S 3/08 - Structure ou forme des résonateurs optiques ou de leurs composants
H01S 3/094 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente
H01S 3/0941 - Procédés ou appareils pour l'excitation, p. ex. pompage utilisant le pompage optique par de la lumière cohérente produite par un laser à semi-conducteur, p. ex. par une diode laser
A thin film mirror, comprising : a mirror shell (605); a reflective film (601) stretched between forming structures (603) provided on said mirror shell and reflective film being arranged such that they form a chamber which is capable of being placed under at least partial vacuum; the mirror shell having an inner surface which forms an inner wail of said chamber, wherein the mirror shell is a moulded part where its inner surface is a controlled surface.
G02B 7/182 - Montures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour prismesMontures, moyens de réglage ou raccords étanches à la lumière pour éléments optiques pour miroirs pour miroirs
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
G09B 9/08 - Simulateurs pour l'enseignement ou l'entraînement pour l'enseignement de la conduite des véhicules ou autres moyens de transport pour l'enseignement du pilotage des aéronefs, p. ex. bancs d'entraînement au pilotage sans visibilité
G09B 9/30 - Simulation de vue à partir d'un aéronef
G09B 9/32 - Simulation de vue à partir d'un aéronef à l'aide d'une image projetée
A TETRA communications system, comprising a first TETRA communication device, connected to a first communication means by means of a first data link to transport TETRA message data and control information between said first communication means and said first TETRA communication device, a second TETRA communication device connected to a second communication means by means of a second data link to transport TETRA message data and control information between said second communication means and said second TETRA communication device, wherein said first communication means and said second communication means are further operable to establish a communications link with each other over a communications network to allow said message data and control information to be transported between said first and second TETRA communication device via said first communication means and said second communication means.
The present invention relates to a method of determining the location of a mobile unit. The mobile unit includes a GNSS receiver for receiving signals from one or more earth orbiting satellites to provide one or more pseudoranges for the position of the mobile unit. The mobile unit also includes a radio transceiver for transmitting and/or receiving signals from one or more radio devices in order to determine a time offset between a clock associated with the radio transceiver and a clock associated with said one or more radio devices. The data received by the GNSS and the radio transceiver are processed by comparing the determined time offset with a clock associated with the GNSS receiver in order to resolve the pseudoranges for the position of the unit so as to determine the position of the mobile unit. The present invention overcomes the limitations of combining the position outputs of different systems such as GNSS and UWB radio devices by combining measurements to provide a position where neither system is able to provide a position on its own.
G01S 19/46 - Détermination de position en combinant les mesures des signaux provenant du système de positionnement satellitaire à radiophares avec une mesure supplémentaire la mesure supplémentaire étant du type signal d'onde radioélectrique
64.
METHOD OF PROCESSING A SATELLITE NAVIGATION SIGNAL
In general terms, a mechanism is described for verifying at a remote location, a geo- location determination made at a receiver, by taking advantage of elements of location signals received at that receiver not detectable or alternatively decodable by the receiver. The elements are at least detectable by verification means at the remote location and from which a location determination of receiver can be verified.
An apparatus for generating ballot data, the apparatus comprising first key generating means configured to generate a random first public key for each of a plurality of ballots, each first public key comprising a base raised to the power of a respective first exponent; second key generating means configured to generate a second public key for each of the plurality of ballots using the generated first public keys, each second public key comprising said base raised to the power of a respective second exponent, wherein the sum of the products of the first and second exponents of the first and second public keys of respective ballots is zero; encoding means configured to encode data representing voter selection options for each of the plurality of ballots as cryptograms, each cryptogram comprising: said base raised to the power of the product of the first and second exponents of the corresponding first and second public keys, said base raised to the power of a third exponent that varies in accordance with said voter selection options, and verification data to demonstrate that said third exponent corresponds to one of the voter selection options; and output means configured to output the first and second public keys and the cryptograms of the plurality of ballots, for use by one or more electronic voting terminals.
H04L 9/30 - Clé publique, c.-à-d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
H04L 9/32 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
An aircraft radio system comprising a plurality of radios interconnected by a digital communications network, each radio having a transceiver and a dedicated processor platform, the aircraft radio system being configured to cause the dedicated processor platforms to constitute a virtual processing environment for the aircraft radio system. There is also an aircraft radio system comprising a plurality of discrete radios interconnected by a digital communications network, each radio having a transceiver, a dedicated processor platform and a server configured to support communications over the network using PPPoE, Point to Point Protocol over Ethernet, to provide a common digital interface between an aircraft domain and the radios for plural types of communication.
A computer workstation (100) for use in a shared virtual working environment, the shared virtual working environment comprising a plurality of networked computer workstations (100, 120, 140) each having one or more users, the computer workstation (100) comprising: a network interface (105) for communicating with other computer workstations in the shared virtual working environment; a display controller (106) for controlling a display to display a visual representation of the shared virtual working environment; a user interface controller (107) for receiving a user input to define a subgroup of users in the shared virtual working environment; and a subgroup controller (102) for setting up a subgroup workspace in the shared virtual working environment, the subgroup workspace being accessible only to said subgroup of users, and for enabling sharing of files or data allocated to the subgroup with other users in the subgroup.
A method of processing video comprising a succession of images of a scene to detect movement of an object in the scene, comprising storing a matrix of bytes each representing the difference in intensity of a respective pixel between temporally adjacent images, creating from those bytes a histogram of the frequency at each of a range of positive and negative values of the intensity difference, locating the limits of a central peak of the frequency distribution in the histogram so as to include in the central peak changes due to illumination change and repetitive motions in the background of the scene, determining the proportion of bytes in the remainder of the distribution that are in tails of the distribution on each side of the central peak, repeating the aforesaid process for each successive pair of temporally adjacent images, and providing an output indicative of a moving object and not indicative of illumination change or repetitive motions, in the event that that proportion meets a predetermined criterion.
G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales
69.
A WIRELESS COMMUNICATION SYSTEM COMPRISING A DUAL MODE TETRA COMMUNICATION APPARATUS
A TETRA communications apparatus, comprising: a first TETRA communications device, operable to establish a first communications link in an ETSI standard TETRA direct mode or trunked mode with a respective other device or devices; a second TETRA communications device, operable to establish a second communications link in an ETSI standard TETRA direct mode or trunked mode with a respective other device or devices; a data link connecting the first and second TETRA communications devices to transport TETRA user plane message data and control information between the first and second TETRA communications devices; and control means for operating the first and second TETRA communications devices to transport said user plane message data and control information between said first and second TETRA communications devices via the data link.
A communications network comprises a plurality of communications broadcasters each operable to generate a location signal in which an authentication signal is embedded and to broadcast the location signal, and a receiver operable to receive the location signals. The receiver is operable to determine, on the basis of the location signals, geo-location information defining a geo-location of said receiver. The receiver is further operable to pass on to a third party, portions of the received signals from which the geo-location has been derived, including the embedded authentication signals. The third party can then authenticate the geo-location by reference to the authentication signals.
B60R 25/04 - Équipements ou systèmes pour empêcher ou signaler l’usage non autorisé ou le vol de véhicules agissant sur des systèmes ou des équipements de véhicules, p. ex. sur les portes, les sièges ou les pare-brises agissant sur le système de propulsion, p. ex. le moteur ou le moteur d’entraînement
G07B 15/02 - Dispositions ou appareils pour encaisser le prix des billets ou les droits d’entrée ou de péage en un ou plusieurs points de contrôle prenant en compte un facteur variable tel que la distance ou le temps, p. ex. pour le transport de passagers, les systèmes de parcs de stationnement ou les systèmes de location de véhicules
A steerable projectile (30) comprises a body portion (32) and a nose portion (34). The nose portion and body portion are substantially coaxially arranged and rotatable relative to one another about their co-axis. The nose portion further comprises an asymmetric formation (36) operable to enable the projectile to be subjected to off-axis drag during flight.
F41G 9/00 - Systèmes de commande des missiles ou projectiles, non prévus ailleurs
F42B 10/00 - Moyens pour influencer, p. ex. pour améliorer, les propriétés aérodynamiques de projectilesDispositions sur les projectiles pour la stabilisation, le pilotage, le freinage de la chute, la réduction ou l'augmentation de la portée
F42B 15/00 - Projectiles autopropulsés, p. ex. roquettesMissiles
G01S 3/80 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes ultrasonores, sonores ou infrasonores
G01S 3/801 - Radiogoniomètres pour déterminer la direction d'où proviennent des ondes infrasonores, sonores, ultrasonores ou électromagnétiques ou des émissions de particules sans caractéristiques de direction utilisant des ondes ultrasonores, sonores ou infrasonores Détails
73.
System and method for multilevel secure object management
A system and method for secure transport of data, the method comprising: sharing of key information with a key distributor, wherein the key information is for enabling decryption of first and second encrypted data, the key distributor being for making one or more decryption keys available to an authorized user; creating a container object, the container object comprising: first encrypted data having a first encryption based on at least a part of said key information; second encrypted data having a second encryption based on at least a part of said key information, wherein the first encryption is different to the second encryption; and metadata relating to the first encrypted data and the second encrypted data; and sending the container object to a data store or otherwise making the container object available, to allow user access to said data container object.
An image processing apparatus and method provides raster image data with light point enhancements. In one aspect the apparatus generates first raster data in a first geometric domain and second raster data in a second geometric domain. The apparatus transforms the first raster data from the first domain to the second domain and combines the transformed first raster data with the second raster data. In another aspect the apparatus has an attenuation unit which applies attenuation to the first raster data. The attenuation is applied dependent upon second raster data. The combination of the transformed first raster data and second raster data provides enhanced contrast, colour representation, and preserved spatial positioning of the second raster data within the background image provided by the first raster data.
A warning unit for attachment to a handheld firearm comprises an attachment device for attachment to a firearm, a light source, and a digitally manipulable input device operable to enable selection of a mode of operation. The warning unit is capable of being operated in at least a narrow divergence mode, and a wide divergence mode wherein, in the narrow divergence mode, the warning unit is operable to emit a beam of light of a lower divergence than in the wide divergence mode.
G08B 5/22 - Systèmes de signalisation optique, p. ex. systèmes d'appel de personnes, indication à distance de l'occupation de sièges utilisant une transmission électriqueSystèmes de signalisation optique, p. ex. systèmes d'appel de personnes, indication à distance de l'occupation de sièges utilisant une transmission électromécanique
A warning unit (30) for attachment to a handheld firearm (10) comprises attachment means for attachment to a firearm, a light source, and digitally manipulable input means operable to enable selection of a mode of operation. The warning unit (30) is capable of being operated in at least a narrow divergence mode, and a wide divergence mode wherein, in the narrow divergence mode, the warning unit is operable to emit a beam of light of a lower divergence than in the wide divergence mode.
F41G 1/35 - Appareils de visée de nuit, p. ex. luminescents combinés à une source lumineuse, p. ex. projecteur pour éclairer la cible
G02B 27/20 - Systèmes ou appareils optiques non prévus dans aucun des groupes , pour projection optique, p. ex. combinaison de miroir, de condensateur et d'objectif pour donner une image d'objets minuscules, p. ex. indicateur lumineux
F21V 14/06 - Commande de la distribution de la lumière émise par réglage d’éléments constitutifs par un mouvement de réfracteurs
A fluid handling system for a dye laser (30) comprises a local dye reservoir (38) suitable for installation local to said laser, the local dye reservoir being operable to store laser dye for supply to said dye laser, and local pumping means (36) operable to draw laser dye from the local reservoir (38) at a flow suitable for use by the dye laser, and a bulk reservoir (42) operable to store laser dye, the bulk reservoir being in fluid communication with the local reservoir (38), and bulk pumping means (44) operable to cause supply of laser dye from the bulk reservoir (42) to the local reservoir (38), as the need arises.
A radio apparatus comprising: a radio frequency processing module for converting radio frequency signals from an antenna to intermediate frequency signals; an intermediate frequency processing module located remotely from the radio frequency processing module, for receiving intermediate frequency signals and processing said signals according to at least one communications protocol; and a digital data link for connecting the radio frequency processing module and the intermediate frequency processing module, for transfer of the intermediate frequency signals.
H04B 1/00 - Détails des systèmes de transmission, non couverts par l'un des groupes Détails des systèmes de transmission non caractérisés par le milieu utilisé pour la transmission
A beam-riding missile (10) has a freely rotating control portion (11) forming its nose and carrying a pair of fixed ailerons (13) and a pair of fixed elevators (14). Detecting means (not shown) gather information indicative of the location of the missile in the beam and steering logic circuitry (not shown) provides signals to a clutch (18) which interfers with the free rotation of the nose in such a way that the elevators are effective to maintain the chosen flight path.
The clutch can be electromagnetic, piezo-electric or function on the Johnson-Raebeck effect.
The combination of fixed control surfaces and steering by a single actuator leads to the possibility of useful reductions in the size, weight and complexity of the missile.
A strip-map Synthetic Aperture Radar (SAR) auto-focus image generation process is provided. Batches of raw radar return data are processed in order to form batch images which each have a valid region between invalid regions. The process determines an estimate of the first derivative of a phase error at an end of the valid region, determines a time-shift corresponding to that estimate and uses that information in determining a starting point for the next batch of raw radar return data.
G01S 13/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p. ex. systèmes radarSystèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
An assembly comprising a first printed circuit board, PCB, with a ball grid array, BGA, on its underside, a second PCB facing the first PCB and having at least one through-hole between its top and bottom surfaces, its top surface printed with a circuit pattern bonded to the BGA, a heat sink layer facing the bottom surface of the second PCB and having at least one thermally-conductive pin projecting normally into the through-hole or a respective one of the through-holes in the second PCB, and, for each pin, a thermally-conductive stud of the same cross-section as the pin, bonded to the BGA and disposed within the through-hole between the pin and the first PCB in thermal contact with the pin.
An infrared detector comprising a plurality of detector elements, the plurality of detector elements comprising a plurality of differently polarisation-sensitive detector elements and a plurality of differently wavelength-sensitive detector elements.
A method of analyzing return signals of successive range cells in a scene using constant false alarm rate adaptive control comprising, for each successive range cell in turn is disclosed mathematically. The return signal is processed mathematically and averaged over a predetermined number of cells near that cell. A first variable factor and the return signal for that cell, to derive a first result. The first variable is adapted depending upon that first result. A second variable factor is derived in accordance with a predetermined relationship between the first and second factors are mathematically processed. The second factor is mathematically processed. The second averaged return signal and the return signal for the cell, to derive a second result. The second result is used as an indication of the presence of an object of interest in the scene.
G01S 13/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes radio, p. ex. systèmes radarSystèmes analogues utilisant la réflexion ou la reradiation d'ondes dont la nature ou la longueur d'onde sont sans importance ou non spécifiées
84.
Method and system for acoustic imaging using a plurality of transmitting arrays on a circumferential surface
The invention relates to an imaging method and system for providing acoustic images of a surface and more particularly, but not exclusively, to acoustic imaging of a surface within a confined space. Also described are an acoustic probe and a transmit/receive sensor array configuration to implement the imaging method and system. The probe has an array of acoustic transmitters arranged in juxtaposed or spaced relationship around at least a portion of the circumferential surface of the probe, and an array of acoustic receivers also disposed around at least a portion of its circumferential surface. A beam-former is used for focussing and steering the acoustic beams from the acoustic transmitter array onto portions of the structure to be examined and for focussing and steering the receive beams onto said surface portions, said beam-former adapted to cause the acoustic transmit beams to be focussed in a plane orthogonal to the plane used to focus the receive beams. High resolution in the near field can be achieved by focussing the transmit and receive beams onto a surface at a focus region, the focus region being narrow in both the orthogonal planes.
A steerable projectile (30) comprises a body portion (32) and a nose portion (34). The nose portion and body portion are substantially coaxially arranged and rotatable relative to one another about their co-axis. The nose portion further comprises an asymmetric formation (36) operable to enable the projectile to be subjected to off -axis drag during flight.
An imaging apparatus for imaging a scene comprises an array (10) of differently-sensitive detector elements (20, 22, 24, 26), each detector element having a respective one of a plurality of different sensitivities, means (2, 4, 6) for directing radiation from the scene to form an image at the array (10); and processing means (12) for reading and processing response signals from the detector elements, wherein the processing means (12) is configured to operate in a plurality of modes, comprising a first processing mode in which it processes response signals in dependence upon the sensitivity of the detector elements from which the response signals were obtained to obtain first, sensitivity-dependent image data, and a second processing mode in which it processes response signals to obtain second, sensitivity-independent image data.
H04N 5/335 - Transformation d'informations lumineuses ou analogues en informations électriques utilisant des capteurs d'images à l'état solide [capteurs SSIS]
H04N 5/33 - Transformation des rayonnements infrarouges
A network management apparatus (1) arranged for use in managing a network of computers each defining a node of the network. The apparatus includes a registry (7) arranged to receive nodal information from one or more nodes (4, 5, 6) identifying the means employed by a node for communicating with nodes. The registry makes available to a node received nodal information in response to a request from the node for that nodal information to enable a determination of whether or not the node possesses means for communicating with nodes which is compatible with the means for communicating with nodes possessed by another node.
H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p. ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
The present invention relates to a motion classification device 14 comprising sensor means 141 for monitoring movements of a targeted object, said sensor means 141 being operable to output motion signals based on said monitored movements, a processing means 147 for processing said motion signals, said processing means being operable to compare said processed motion signals with a set of predetermined values such that an event of said targeted object 12 being moved from a first mode of operation to a second mode of operation can be detected by determining the difference between said processed motion signals and said set of predetermined values.
An imager comprising a detector (14) having at least one element sensitive to radiation having a first polarisation and at least one element sensitive to radiation having a second polarisation and means for simultaneously directing (12) from the same scene or point of a scene radiation of the first polarisation onto the first polarisation element and radiation of the second polarisation onto the second polarisation element. Preferably, the detector (14) consists of a two dimensional array of elements.
A display apparatus for projecting light onto a screen medium to present an image to a user, comprising of a source of illumination that is split into a number of substantially equal sub-beams. Each sub-beam is then directed onto one of an array of individual beam modulation devices. The beam modulation devices are arranged such that their combined output is a composite image, with overlapping sections, formed on a projection screen. By utilising an common illumination source, the size, complexity, cost and mass of the projection system may all be kept to a minimum. The minimisation in size enables the outputs from the different projectors to all be sited closely together, and additionally each output may be sited close to the ideal projector location. This positioning enables a composite image with low seam visibility to be produced by the projection system.
A display apparatus for projecting light onto a screen medium to present an image to a user, comprises first and second substantially collocated projection means, the first projection means being operable to project light in a first divergent beam and the second projection means being operable to project light in second and third divergent beams, said second and third divergent beams being respectively juxtaposed on either side of the first.
An antenna printed on a dielectric substrate comprising a radiating element and a transmission line printed on a front surface of said dielectric substrate and a ground element printed on a back surface of said dielectric substrate, said radiating element having a tapered shape with a narrow end connected to a first end of said transmission line, and two opposing edges of said radiating element contiguous to said transmission line, said radiating element further having a v-shaped notch distal from said first end of said transmission line wherein a broader end of said v-shaped notch having two opposing ends contiguous to said opposing edges of said radiating element thereby forming a two symmetrical lobes which diverge with increasing distance from said first end of said transmission line, said opposing edges of said radiating element further having a plurality of serrations along its length thereby forming a slow wave structure for signal propagating along said edges.
A method and system is disclosed for enforcing at least one privacy policy in relation to user data, the system comprising: a user system, a broker system, and a service provider system, the user system being operable to: encrypt the user data using a symmetric encryption algorithm and an encryption key generated in dependence on said at least one privacy policy and a master key associated with the user system; and transmit the encrypted user data to the service provider in the form of a digital container that includes the encrypted user data and said at least one privacy policy; and the broker system being operable to: receive a request from the service provider to access the user data, the request including said at least one privacy policy; verify that the request complies with said at least one privacy policy; and if so, regenerate the encryption key in dependence on the master key and at least one privacy policy supplied by the service provider, whereby the service provider system is able to decrypt the user data using a symmetric decryption algorithm and the regenerated encryption key.
H04L 9/00 - Dispositions pour les communications secrètes ou protégéesProtocoles réseaux de sécurité
G06F 21/62 - Protection de l’accès à des données via une plate-forme, p. ex. par clés ou règles de contrôle de l’accès
H04L 9/30 - Clé publique, c.-à-d. l'algorithme de chiffrement étant impossible à inverser par ordinateur et les clés de chiffrement des utilisateurs n'exigeant pas le secret
A scan-to-scan integrator for use in radar apparatus comprises means for defining a search window for use in verifying a candidate detection. The window is bounded by the intersection of a first zone and a second zone, wherein the first zone comprises a rectangular reference frame aligned detection window, and the second zone comprises a range estimate tolerance region defined by a range estimate for the candidate detection and predetermined tolerance limits.
A mechanical linkage, for use on original equipment or for replacement of existing hydraulic ram based actuators, comprises a rotary to linear transmission. The transmission provides two co-rotatable capstans (2, 3) of different diameters, and two idler wheels (5,8) spaced on a longitudinally slidable linkage (22). The capstans (2, 3) are linked to a first of the idler wheels (5) by means (4) of a pulley line wound from the first capstan (2), around the wheel (5), and then back to the second capstan (3). The first capstan (2) is also linked by means of a pulley line (7) to the second idler wheel (8), and the second capstan (3) likewise to the second idler wheel (8) by a third pulley line (10). The difference in diameters causes a differential winding of the various lengths of pulley line between the idler wheels (5, 8) and the capstans (2, 3), which urges the linkage to slide relative to the capstans (2, 3). Cooperation of the two capstan/idler wheel combinations compensates for possible backlash.
F16H 19/00 - Transmissions comportant essentiellement et uniquement des engrenages ou des organes de friction et qui ne peuvent transmettre un mouvement rotatif indéfini
96.
COLLABORATIVE ACCESS CONTROL IN A COMPUTER NETWORK
Access control architecture is provided which manages control of facilities (data, applications) accessible across local networks. An authorisation function hosted on the network hosting the requesting computer firstly checks, in response to a request for access to a facility on another network, if the requesting computer has access rights to the network hosting the facility. The architecture then maps user role information used in the first network to corresponding role information in the facility hosting network. This is then used by a corresponding authorisation function in the facility hosting network to determine grant of access to all or part of the facility concerned.
brevets
