A method and a system for selective-content processing of panoramic multimedia signals are disclosed. Features of panoramic cameras and low-latency virtual-reality headsets are exploited to create an advanced efficient system for covering events of diverse and fast- motion actions for the purpose of both broadcasting and data streaming. The disclosed system employs a virtual-reality headset to produce a display of a multimedia signal and generate geometric data defining a view region of the display. A content-filtered signal is extracted from the multimedia signal, according to the geometric data, for broadcasting and dissemination to client devices of a universal streaming server.
H04N 21/2668 - Création d'un canal pour un groupe dédié d'utilisateurs finaux, p. ex. en insérant des publicités ciblées dans un flux vidéo en fonction des profils des utilisateurs finaux
H04N 5/262 - Circuits de studio, p. ex. pour mélanger, commuter, changer le caractère de l'image, pour d'autres effets spéciaux
2.
METHOD AND SYSTEM FOR FLOW-RATE REGULATION IN A CONTENT-CONTROLLED STREAMING NETWORK
A universal streaming server distributing panoramic multimedia signals with client-controlled content selection and flow-rate adaptation to receiver and network conditions is disclosed. The universal streaming server performs adaptive content filtering based on clients' commands and regulates signal flow rate between the universal streaming server and each of multiple client devices based on performance measurements and content specifications. The performance measurements include measurements pertinent to a client's receiver and measurement pertinent to a network path to the client's receiver. The universal streaming server may employ multiple content filters and multiple encoders to concurrently serve a large number of clients concurrently.
H04N 21/647 - Signalisation de contrôle entre des éléments du réseau et serveur ou clientsProcédés réseau pour la distribution vidéo entre serveur et clients, p. ex. contrôle de la qualité du flux vidéo en éliminant des paquets, protection du contenu contre une modification non autorisée dans le réseau ou surveillance de la charge du réseau ou réalisation d'une passerelle entre deux réseaux différents, p. ex. entre réseau IP et réseau sans fil
H04L 12/851 - Actions liées au type de trafic, p.ex. qualité de service ou priorité
H04N 19/40 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le transcodage vidéo, c.-à-d. le décodage partiel ou complet d’un flux d’entrée codé suivi par un ré-encodage du flux de sortie décodé
H04N 21/24 - Surveillance de procédés ou de ressources, p. ex. surveillance de la charge du serveur, de la bande passante disponible ou des requêtes effectuées sur la voie montante
3.
METHOD AND SYSTEM FOR PANORAMIC MULTIMEDIA STREAMING
Methods and apparatus for panoramic multimedia streaming where viewers may control spatial coverage of panoramic video components of multimedia signals are disclosed. A novel flexible streaming server is devised to perform client-specific content filtering in addition to adapting multimedia signals to characteristics of individual client devices as well as to varying capacities of network paths to client devices. The server may distribute software modules to client devices to enable viewers to communicate preferred view regions of a panoramic scene. The server includes a learning module devised to retain viewing-preference data, correlate viewing preference to characteristics of client devices, and determine a default viewing preference for each client device. The server implements computationally efficient schemes of generating and distributing content-filtered multimedia signals to clients. The server may be implemented using hardware processing units and memory devices allocated within a shared cloud-computing network.
H04N 21/8545 - Création de contenu pour générer des applications interactives
H04N 19/40 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le transcodage vidéo, c.-à-d. le décodage partiel ou complet d’un flux d’entrée codé suivi par un ré-encodage du flux de sortie décodé
H04N 19/85 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le pré-traitement ou le post-traitement spécialement adaptés pour la compression vidéo
H04N 21/2662 - Contrôle de la complexité du flux vidéo, p. ex. en mettant à l'échelle la résolution ou le débit binaire du flux vidéo en fonction des capacités du client
H04N 21/472 - Interface pour utilisateurs finaux pour la requête de contenu, de données additionnelles ou de servicesInterface pour utilisateurs finaux pour l'interaction avec le contenu, p. ex. pour la réservation de contenu ou la mise en place de rappels, pour la requête de notification d'événement ou pour la transformation de contenus affichés
4.
Method and apparatus for signal encoding realizing optimal fidelity
Methods of optimal encoding of signals to be compatible with characteristics of target receivers while meeting constraints pertinent to sizes of encoded signals or capacities of paths communicating signals to the target receivers are disclosed. The methods are based on analytical modeling of the encoding process guided by experimental data relating measured performance indicators of encoded signals of diverse classifications to respective encoding parameters. A computationally-efficient technique is devised to determine optimal encoding parameters based on pre-processed data derived from the analytical models. The methods may be implemented at an encoder of original signals or a transcoder of pre-encoded signals.
H04B 1/66 - 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 pour réduire la largeur de bande des signauxDétails 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 pour améliorer l'efficacité de la transmission
H04N 7/12 - Systèmes dans lesquels le signal de télévision est transmis par un canal ou une pluralité de canaux parallèles, la bande passante de chaque canal étant inférieure à la largeur de bande du signal de télévision
H04N 11/02 - Systèmes de télévision en couleurs avec réduction de la largeur de bande
H04N 11/04 - Systèmes de télévision en couleurs utilisant la modulation par impulsions codées
H04N 19/146 - Débit ou quantité de données codées à la sortie du codeur
H04N 19/196 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par le procédé d’adaptation, l’outil d’adaptation ou le type d’adaptation utilisés pour le codage adaptatif étant spécialement adaptés au calcul de paramètres de codage, p. ex. en faisant la moyenne de paramètres de codage calculés antérieurement
H04N 19/102 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le codage adaptatif caractérisés par l’élément, le paramètre ou la sélection affectés ou contrôlés par le codage adaptatif
H04N 19/154 - Qualité visuelle après décodage mesurée ou estimée de façon subjective, p. ex. mesure de la distorsion
H04N 19/164 - Retour d’information en provenance du récepteur ou du canal de transmission
H04N 19/85 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le pré-traitement ou le post-traitement spécialement adaptés pour la compression vidéo
H04N 19/40 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant le transcodage vidéo, c.-à-d. le décodage partiel ou complet d’un flux d’entrée codé suivi par un ré-encodage du flux de sortie décodé
H04N 19/90 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant des techniques de codage non prévues dans les groupes , p. ex. les fractales
5.
SYSTEM AND METHOD FOR STREAMING A MEDIA FILE FROM A SERVER TO A CLIENT DEVICE
A method for streaming a media file from a server to a client device is provided. The method provides for streaming requested chunks of the media file from the server to the client device. The method determines a rate for streaming the requested chunk to the client device by using relationships between the requested chunk, the media file, current chunks, and current streaming rates. Provided a seek operation is determined, the requested chunk is streamed at a burst rate or a throttle rate. The method is especially useful for reducing latency and saving bandwidth. A corresponding system for streaming the media file from the server to the client device is also provided.
A method for streaming a media file from a server to a client device is provided. The method provides for streaming requested chunks of the media file from the server to the client device. The method determines a rate for streaming the requested chunk to the client device by using relationships between the requested chunk, the media file, current chunks, and current streaming rates. Provided a seek operation is determined, the requested chunk is streamed at a burst rate or a throttle rate. The method is especially useful for reducing latency and saving bandwidth. A corresponding system for streaming the media file from the server to the client device is also provided.
A method for streaming a media file from a server to a client device is provided. The method provides for streaming requested chunks of the media file from the server to the client device. The method determines a rate for streaming the requested chunk to the client device by using relationships between the requested chunk, the media file, current chunks, and current streaming rates. Provided a seek operation is determined, the requested chunk is streamed at a burst rate or a throttle rate. The method is especially useful for reducing latency and saving bandwidth. A corresponding system for streaming the media file from the server to the client device is also provided.
G06F 15/16 - Associations de plusieurs calculateurs numériques comportant chacun au moins une unité arithmétique, une unité programme et un registre, p. ex. pour le traitement simultané de plusieurs programmes
H04L 12/801 - Commande de flux ou commande de congestion
8.
SYSTEM AND METHOD FOR OPTIMIZING A COMMUNICATION SESSION BETWEEN MULTIPLE TERMINALS INVOLVING TRANSCODING OPERATIONS
System and method for optimizing a transcoding session between multiple terminals are disclosed. The method determines properties of the transcoding session, including a number of terminals participating in the transcoding session, media characteristics supported by each terminal, a measure of performance of the transcoding session to be optimized, and optionally a proportion of time involved in the transcoding session for each terminal. Then a cost function characterizing the measure of performance of the transcoding session and depending on the above properties of the transcoding session is built, followed by optimizing the cost function with respect to said measure of performance to determine an optimal measure of performance for the transcoding session and optimal values for the media characteristics for each terminal. In one embodiment, codecs used by multiple terminals and computational complexity of the transcoding session are optimized. A corresponding system for optimizing the transcoding session is also provided.
System and method for optimizing a transcoding session between multiple terminals are disclosed. The method determines properties of the transcoding session, including a number of terminals participating in the transcoding session, media characteristics supported by each terminal, a measure of' performance of the transcoding session to be optimized, and optionally a proportion of time involved in the transcoding session for each terminal. Then a cost function characterizing the measure of performance of the transcoding session and depending on the above properties of the transcoding session is built, followed by optimizing the cost function with respect to said measure of performance to determine an optimal measure of performance for the transcoding session and optimal values for the media characteristics for each terminal. In one embodiment, codecs used by multiple terminals and computational complexity of the transcoding session are optimized. A corresponding system for optimizing the transcoding session is also provided.
H04W 4/10 - Services de messagerie instantanée vocale ou de messagerie sur appel
H04W 4/18 - Conversion de format ou de contenu d'informations, p. ex. adaptation, par le réseau, des informations reçues ou transmises pour une distribution sans fil aux utilisateurs ou aux terminaux
10.
METHOD AND SYSTEM FOR SELF-TUNING CACHE MANAGEMENT
Web objects, such as media files are sent through an adaptation server which includes a transcoder for adapting forwarded objects according to profiles of the receiving destinations, and a cache memory for caching frequently requested objects, including their adapted versions. The probability of additional requests for the same object before the object expires, is assessed by tracking hits. Only objects having experienced hits in excess of a hit threshold are cached, the hit threshold being adaptively adjusted based on the capacity of the cache, and the space required to store cached media files. Expired objects are collected in a list, and may be periodically ejected from the cache, or when the cache is nearly full.
Methods and systems for managing caching of objects in a cache are disclosed. Probability of requests for the same object before the object expires, is assessed by tracking hits. Only objects having experienced hits in excess of a hit threshold are cached, the hit threshold being adaptively adjusted based on the capacity of the cache, and the space required to store cached media files. Expired objects are periodically ejected from the cache, or when the cache is nearly full. Methods and systems for caching adapted transcoded versions of files are also provided.
Audio and video streams of a media file are transcoded just-in-time by keeping the transcoding process synchronized to a wall clock. The transcoding is initially configured slightly faster than real-time. The transcoded frames are pushed from the transcoder through a variable bandwidth connection as soon as they are transcoded. Transcoding is then monitored periodically to assess the bandwidth that was available during the transmission of a transcoded buffer. Two time intervals are measured: a buffer interval which is the difference in the transcoded buffer timestamps of the previous two transmissions, and a clock interval corresponding to the real time transmission time of the last transcoded buffer. If a significant difference is observed, the transcoder bit rate is adjusted by a factor that is derived from that difference.
H04N 21/2662 - Contrôle de la complexité du flux vidéo, p. ex. en mettant à l'échelle la résolution ou le débit binaire du flux vidéo en fonction des capacités du client
13.
DYNAMIC BIT RATE ADAPTATION OVER BANDWIDTH VARYING CONNECTION
Audio and video streams of a media file are transcoded just-in-time by keeping the transcoding process synchronized to a wall clock. The transcoding is initially configured slightly faster than real-time. The transcoded frames are pushed from the transcoder through a variable bandwidth connection as soon as they are transcoded. Transcoding is then monitored periodically to assess the bandwidth that was available during the transmission of a transcoded buffer. Two time intervals are measured: a buffer interval which is the difference in the transcoded buffer timestamps of the previous two transmissions, and a clock interval corresponding to the real time transmission time of the last transcoded buffer. If a significant difference is observed, the transcoder bit rate is adjusted by a factor that is derived from that difference.
H04N 21/2662 - Contrôle de la complexité du flux vidéo, p. ex. en mettant à l'échelle la résolution ou le débit binaire du flux vidéo en fonction des capacités du client
H04N 7/26 - utilisant la réduction de la largeur de bande (réduction d'information par conversion de code en général H03M 7/30)
14.
SYSTEM AND METHOD OF PACING REAL TIME MEDIA TRANSMISSION OVER A BROADBAND CHANNEL USING MICRO BURSTING
A wireless system for steaming media files includes a microburst gateway in which microbursts, comprising groups of buffered packets of the streamed media, are transmitted periodically to a user over a broadband channel over respective window periods, the bursts being transmitted at a higher than an average packet rate associated with the media file. At the start of each fairly long window period of 500ms, for example, one microburst is sent over the broadband channel, leaving the remainder of the window period available for other users. The window period and a number of packets in the burst within the window period are defined so that the average packet rate is substantially maintained. A corresponding microburst gateway and a method for transmitting the media file are also provided.
H04L 12/08 - Distribution de numéros de messagesComptage des caractères, des mots ou des messages
H04L 12/66 - Dispositions pour la connexion entre des réseaux ayant différents types de systèmes de commutation, p. ex. passerelles
H04L 47/193 - Commande de fluxCommande de la congestion au niveau des couches au-dessus de la couche réseau au niveau de la couche de transport, p. ex. liée à TCP
H04L 47/27 - Évaluation ou mise à jour de la taille de la fenêtre, p. ex. en utilisant des informations dérivées de paquets [ACK] d’acquittements
H04N 21/60 - Structure du réseau ou procédés pour la distribution de vidéo entre le serveur et le client ou entre des clients distantsSignalisation de contrôle entre clients, serveur et éléments du réseauTransmission de données de gestion entre serveur et clientDétails de la communication entre serveur et client
A method of content filtering of data containers of multiple content types is based on generating a set of encoded filters and a set of encoded rules for each content type. Each encoded filter is expressed as a respective operator, from among user-defined operators, and two operands including a content descriptor and a descriptor criterion. A filter has a binary state and a rule may be based on a single filter or a number of selected filters. An apparatus implementing the method has a user interface for receiving user-defined configuration data, a configuration module for generating a set of encoded filters and a set of encoded rules for each content type, a network interface for receiving data containers from a network and transmitting filtered data containers to the network, and a filtering module for applying the rules to received data containers.
ABSTRACT Content filtering of data containers is based on defining content types, receiving identifiers of a set of rules applicable to each content type, and determining
dependence of at least one rule on other rules. The identifiers are sorted into rule strata where rules within each rule stratum are independent of each other and rules within each rule stratum beyond a first stratum depend on at least one rule of at least one preceding rule stratum. Upon receiving a data container of multiple components from a network, a content type is determined for each component. Rules of rule strata specific to a content type of a component are applied starting with rules of a first rule stratum and proceeding sequentially to selected rules of succeeding rule strata. An apparatus for content filtering stores processor- executable instructions for arranging rules in rule strata and sequentially applies successive rules to data containers. CA 2809172 2017-12-27
Content filtering of data containers of multiple content types is performed using multiple filtering modules operating concurrently. An apparatus for content filtering has a set of content-specific filtering modules and a network interface for parsing a received data container into components and directing each component to a respective filtering module. A filtering module edits a component of a specific content type according to respective rules. A multiplexer combines edited components produced by the set of filtering modules to form an edited data container. A root module applies a set of basic rules to a data container and any attachments. In an alternative configuration, the apparatus employs multiple filtering modules each applying rules for all content types. Received data containers are distributed among the filtering modules and an output module arranges edited data containers of a data stream in proper sequential order.
18.
METHOD AND APPARATUS FOR CONCURRENT FILTERING OF MULTIPLE COMPONENTS OF STREAMING DATA
Content filtering of data containers of multiple content types is performed using multiple filtering modules operating concurrently. An apparatus for content filtering has a set of content-specific filtering modules and a network interface for parsing a received data container into components and directing each component to a respective filtering module. A filtering module edits a component of a specific content type according to respective rules. A multiplexer combines edited components produced by the set of filtering modules to form an edited data container. A root module applies a set of basic rules to a data container and any attachments. In an alternative configuration, the apparatus employs multiple filtering modules each applying rules for all content types. Received data containers are distributed among the filtering modules and an output module arranges edited data containers of a data stream in proper sequential order.
19.
METHOD AND APPARATUS FOR RULE-BASED FILTERING OF DATA COMPONENTS
ABSTRACT A method of content filtering of data containers of multiple content types is based on generating a set of encoded filters and a set of encoded rules for each content type. Each encoded filter is expressed as a respective operator, from among user-defined operators, and two operands including a content descriptor and a descriptor criterion. A filter has a binary state and a rule may be based on a single filter or a number of selected filters. An apparatus implementing the method has a user interface for receiving user-defined configuration data, a configuration module for generating a set of encoded filters and a set of encoded rules for each content type, a network interface for receiving data containers from a network and transmitting filtered data containers to the network, and a filtering module for applying the rules to received data containers. Date Recue/Date Received 2021-02-26
ABSTRACT A method of content filtering of data containers of multiple content types is based on generating a set of encoded filters and a set of encoded rules for each content type. Each encoded filter is expressed as a respective operator, from among user-defined operators, and two operands including a content descriptor and a descriptor criterion. A filter has a binary state and a rule may be based on a single filter or a number of selected filters. An apparatus implementing the method has a user interface for receiving user-defined configuration data, a configuration module for generating a set of encoded filters and a set of encoded rules for each content type, a network interface for receiving data containers from a network and transmitting filtered data containers to the network, and a filtering module for applying the rules to received data containers. Date Recue/Date Received 2021-02-26
H04L 41/0604 - Gestion des fautes, des événements, des alarmes ou des notifications en utilisant du filtrage, p. ex. la réduction de l’information en utilisant la priorité, les types d’éléments, la position ou le temps
H04L 69/00 - Dispositions, protocoles ou services de réseau indépendants de la charge utile de l'application et non couverts dans un des autres groupes de la présente sous-classe
H04L 69/22 - Analyse syntaxique ou évaluation d’en-têtes
21.
METHOD AND APPARATUS FOR EMPLOYING RULES TO FILTER STREAMING
Content filtering of data containers is based on defining content types, receiving identifiers of a set of rules applicable to each content type, and determining dependence of at least one rule on other rules. The identifiers are sorted into rule strata where rules within each rule stratum are independent of each other and rules within each rule stratum beyond a first stratum depend on at least one rule of at least one preceding rule stratum. Upon receiving a data container of multiple components from a network, a content type is determined for each component. Rules of rule strata specific to a content type of a component are applied starting with rules of a first rule stratum and proceeding sequentially to selected rules of succeeding rule strata. An apparatus for content filtering stores processor-executable instructions for arranging rules in rule strata and sequentially applies successive rules to data containers.
Content filtering of data containers of multiple content types is performed using multiple filtering modules operating concurrently. An apparatus for content filtering has a set of content-specific filtering modules and a network interface for parsing a received data container into components and directing each component to a respective filtering module. A filtering module edits a component of a specific content type according to respective rules. A multiplexer combines edited components produced by the set of filtering modules to form an edited data container. A root module applies a set of basic rules to a data container and any attachments. In an alternative configuration, the apparatus employs multiple filtering modules each applying rules for all content types. Received data containers are distributed among the filtering modules and an output module arranges edited data containers of a data stream in proper sequential order.
A method of content filtering of data containers of multiple content types is based on generating a set of encoded filters and a set of encoded rules for each content type. Each encoded filter is expressed as a respective operator, from among user-defined operators, and two operands including a content descriptor and a descriptor criterion. A filter has a binary state and a rule may be based on a single filter or a number of selected filters. An apparatus implementing the method has a user interface for receiving user-defined configuration data, a configuration module for generating a set of encoded filters and a set of encoded rules for each content type, a network interface for receiving data containers from a network and transmitting filtered data containers to the network, and a filtering module for applying the rules to received data containers.
To improve the efficiency of media delivery over the Internet, a system and a method are provided for caching remote media files and retrieving cached media files, comprising hardware and software modules as well as steps for storing a remote media file into the cache and retrieving the cached media file based on a signature created by hashing only discrete parts of the media file. The signature is a key for finding the cached media files in the cache upon subsequent requests for the same media file, even if it is received from a different internet location. Media files may be adapted to the characteristics of different media clients, and adapted media files may be equally cached.
To improve the efficiency of media delivery over the Internet, a system and a method are provided for caching remote media files and retrieving cached media files, comprising hardware and software modules as well as steps for storing a remote media file into the cache and retrieving the cached media file based on a signature created by hashing only discrete parts of the media file. The signature is a key for finding the cached media files in the cache upon subsequent requests for the same media file, even if it is received from a different internet location. Media files may be adapted to the characteristics of different media clients, and adapted media files may be equally cached.
A server for data streaming encodes multimedia signals at bit rates compatible with a connection of time-varying conditions and informs a client receiving a multimedia signal of changing bit rates and causes of change. The server supports sev-eral clients and includes a flow controller and at least one encoder. The flow controller derives metrics from measurements to de-termine a permissible transmission rate from the server to each active client. An encoder adapts individual transmission rates of signals according to respective permissible transmission rates. An overlay module, coupled to a multimedia signal source, the flow controller, and an encoder, superimposes informative insertions indicating permissible transmission rates and associated metrics on a multimedia signal to inform a client of changing transmission rates and causes of change. An informative insertion has a pre-defined duration and is sent either periodically or following a substantial change of network conditions.
H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 65/80 - Dispositions, protocoles ou services dans les réseaux de communication de paquets de données pour prendre en charge les applications en temps réel en répondant à la qualité des services [QoS]
A server for data streaming encodes multimedia signals at bit rates compatible with a connection of time-varying conditions and informs a client receiving a multimedia signal of changing bit rates and causes of change. The server supports several clients and includes a flow controller and at least one encoder. The flow controller derives metrics from measurements to determine a permissible transmission rate from the server to each active client. An encoder adapts individual transmission rates of signals according to respective permissible transmission rates. An overlay module, coupled to a multimedia signal source, the flow controller, and an encoder, superimposes informative insertions indicating permissible transmission rates and associated metrics on a multimedia signal to inform a client of changing transmission rates and causes of change. An informative insertion has a predefined duration and is sent either periodically or following a substantial change of network conditions.
H04L 12/24 - Dispositions pour la maintenance ou la gestion
H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 12/26 - Dispositions de surveillance; Dispositions de test
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
28.
METHOD AND SYSTEM FOR PREDICTIVE SCALING OF COLOUR MAPPED IMAGES
A method for scaling an original colour mapped image are disclosed. The method performs steps of: transforming the original colour map into the scaled colour map based on the original colour map and the original image independently of the scaled image; scaling the original image into the scaled image; for each pixel of the scaled image: determining a set of contributing pixels in the original image, which define a colour of the pixel; determining the colour of the pixel based on colours of the contributing pixels and geometric proximity of the pixel to the contributing pixels; establishing correspondence between the colour of the pixel and a colour in the scaled colour map; and determining a corresponding colour map index thereof; and setting the determined colour map index in the scaled pixel map. A corresponding system for scaling digital images is also provided.
A system and methods for adapting streaming data for transmission over a connection of time-varying capacity are disclosed. A streaming server individually adapts transmission rates of signals directed to subtending clients according to measurements characterizing connections from the streaming server to the clients. The measurements may relate to characteristics such as transfer delay, data-loss fraction, and occupancy level of a buffer at a client's receiver. A flow controller associated with the streaming server derives metrics from measurements taken over selected time windows to determine a permissible transmission rate from the server to each active client. Metrics related to a specific characteristic may include a mean value over a moving window as well as short and long term tendencies of respective measurements. An adaptable encoder at the streaming server encodes signals to meet permissible transmission rates.
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
30.
DATA STREAMING THROUGH TIME-VARYING TRANSPORT MEDIA
Methods of data streaming from an encoder to a decoder through a connection subjected to time-varying conditions are disclosed. The connection is assigned a nominal flow rate and an encoding coefficient associated with the connection modifies the nominal flow rate to determine a permissible flow rate compatible with a time- varying state of the connection. Multiple performance characteristics are associated with the connection and corresponding sets of performance measurements taken over adaptively selected time windows are acquired. Performance metrics having one-to- one correspondence to the performance characteristics are determined and compared with lower bounds and upper bounds of respective predefined acceptance intervals. A current encoding coefficient is computed as a function of the performance metrics and used to determine the permissible flow rate. A configuration of the encoder is adapted to produce an encoded signal which maximizes signal fidelity under the constraint of the permissible flow rate.
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole
31.
METHOD AND SYSTEM FOR TRIGGERING INGESTION OF REMOTE CONTENT BY A STREAMING SERVER USING UNIFORM RESOURCE LOCATOR FOLDER MAPPING
A method and system to trigger ingestion of remote content or playlists by a streaming server using URL folder mapping is disclosed. The streaming server maintains a URL Map having entries that map a URL folder referenced in the streaming URL to a content server folder located on the content server. This folder level mapping enables maintaining a many- to -many relationship between multiple content identified at the streaming server and their corresponding content located at the content server.
A system and methods for adapting streaming data for transmission over a connection of time-varying capacity are disclosed. A streaming server individually adapts transmission rates of signals directed to subtending clients according to measurements characterizing connections from the streaming server to the clients. The measurements may relate to characteristics such as transfer delay, data-loss fraction, and occupancy level of a buffer at a client's receiver. A flow controller associated with the streaming server derives metrics from measurements taken over selected time windows to determine a permissible transmission rate from the server to each active client. Metrics related to a specific characteristic may include a mean value over a moving window as well as short and long term tendencies of respective measurements. An adaptable encoder at the streaming server encodes signals to meet permissible transmission rates.
H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 47/25 - Commande de fluxCommande de la congestion le débit étant modifié par la source lors de la détection d'un changement des conditions du réseau
H04L 47/38 - Commande de fluxCommande de la congestion en adaptant le codage ou le taux de compression
H04L 65/80 - Dispositions, protocoles ou services dans les réseaux de communication de paquets de données pour prendre en charge les applications en temps réel en répondant à la qualité des services [QoS]
33.
DATA STREAMING THROUGH TIME-VARYING TRANSPORT MEDIA
Methods of data streaming from an encoder to a decoder through a connection subjected to time-varying conditions are disclosed. The connection is assigned a nominal flow rate and an encoding coefficient associated with the connection modifies the nominal flow rate to determine a permissible flow rate compatible with a time-varying state of the connection. Multiple performance characteristics are associated with the connection and corresponding sets of performance measurements taken over adaptively selected time windows are acquired. Performance metrics having one-to-one correspondence to the performance characteristics are determined and compared with lower bounds and upper bounds of respective predefined acceptance intervals. Acurrent encoding coefficient is computed as a function of the performance metrics and used to determine the permissible flow rate. A configuration of the encoder is adapted to produce an encoded signal which maximizes signal fidelity under the constraint of the permissible flow rate.
H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés
H04L 12/20 - Dispositions pour la fourniture de services particuliers aux abonnés pour convertir la vitesse de transmission de la vitesse inhérente d'une sous-station à la vitesse inhérente d'autres sous-stations
H04L 47/25 - Commande de fluxCommande de la congestion le débit étant modifié par la source lors de la détection d'un changement des conditions du réseau
H04L 47/38 - Commande de fluxCommande de la congestion en adaptant le codage ou le taux de compression
H04L 65/80 - Dispositions, protocoles ou services dans les réseaux de communication de paquets de données pour prendre en charge les applications en temps réel en répondant à la qualité des services [QoS]
34.
METHOD AND SYSTEM FOR TRIGGERING INGESTION OF REMOTE CONTENT BY A STREAMING SERVER USING UNIFORM RESOURCE LOCATOR FOLDER MAPPING
A method and system to trigger ingestion of remote content or playlists by a streaming server us-ing URL folder mapping is disclosed. The streaming server maintains a URL Map having entries that map a URL folder referenced in the streaming URL to a con-tent server folder located on the content server. This folder level mapping enables maintaining a many- to -many relationship between multiple content identified at the streaming server and their corresponding content located at the content server.
A modular transcoder software system for transcoding a multimedia message includes a collection of software modules and objects for the dynamic construction of a series of complex, related or unrelated operations in the form of a transcoding pipeline. The transcoding pipeline provides a hierarchy of operations, such mat they can be organized and optimized with the aim of being able to execute the entire hierarchy in a single pass. Additionally, external plugins can customize the mechanism of building the pipeline by altering, adding to, or removing construction knowledge.
H03M 7/00 - Conversion d'un code, dans lequel l'information est représentée par une séquence donnée ou par un nombre de chiffres, en un code dans lequel la même information est représentée par une séquence ou par un nombre de chiffres différents
G06F 5/00 - Procédés ou dispositions pour la conversion de données, sans modification de l'ordre ou du contenu des données maniées
H04W 4/18 - Conversion de format ou de contenu d'informations, p. ex. adaptation, par le réseau, des informations reçues ou transmises pour une distribution sans fil aux utilisateurs ou aux terminaux
A modular transcoder software system for transcoding a multimedia message includes a collection of software modules and objects for the dynamic construction of a series of complex, related or unrelated operations in the form of a transcoding pipeline. The transcoding pipeline provides a hierarchy of operations, such mat they can be organized and optimized with the aim of being able to execute the entire hierarchy in a single pass. Additionally, external plugins can customize the mechanism of building the pipeline by altering, adding to, or removing construction knowledge.
H03M 7/00 - Conversion d'un code, dans lequel l'information est représentée par une séquence donnée ou par un nombre de chiffres, en un code dans lequel la même information est représentée par une séquence ou par un nombre de chiffres différents
H04W 4/18 - Conversion de format ou de contenu d'informations, p. ex. adaptation, par le réseau, des informations reçues ou transmises pour une distribution sans fil aux utilisateurs ou aux terminaux
37.
METHOD AND SYSTEM FOR FAST CHANNEL SWITCHING USING STANDARD RTSP MESSAGES
Method and system for performing fast channel switching in client-server systems, in which live media streams sent by a streaming server under the RTSP protocol are played by the client, are described. The seek functionality in the media player is overloaded to provide switching between live media streams by using standard RTSP message in-band within a single RTSP session.
Method and system for performing fast channel switching in client-server systems, in which live media streams sent by a streaming server under the RTSP protocol are played by the client, are described. The seek functionality in the media player is overloaded to provide switching between live media streams by using standard RTSP message in-band within a single RTSP session.
A method of receiving and forwarding a multimedia message is provided. The multimedia message is adapted with a first adaptation profile into a first adapted message to be received in a first device. The multimedia message and the first adapted message are stored in a media cache. The message may then be forwarded from the first device to a second device that has a second adaptation profile by retrieving the first adapted message from the media cache and sending it to the second device if the first and second adaptation profiles match, otherwise the multimedia message is retrieved from the media cache and adapted with the second adaptation profile into a second adapted message that is then sent to the second device. In addition, the second adapted message is stored in the media cache.
A method of receiving and forwarding a multimedia message is provided. The multimedia message is adapted with a first adaptation profile into a first adapted message to be received in a first device. The multimedia message and the first adapted message are stored in a media cache. The message may then be forwarded from the first device to a second device that has a second adaptation profile by retrieving the first adapted message from the media cache and sending it to the second device if the first and second adaptation profiles match, otherwise the multimedia message is retrieved from the media cache and adapted with the second adaptation profile into a second adapted message that is then sent to the second device. In addition, the second adapted message is stored in the media cache.
Method for editing data containers includes formulating a set of descriptors of data-containers' content and a set of criteria for the descriptors; specifying a set of operators; determining a set of filters, each filter defined according to a descriptor selected from the set of descriptors and a criterion selected from the set of criteria; acquiring a set of rules, containing Boolean expressions of a subset of the filters; arranging transcoders into transcoder groups, each transcoder group coupled to a respective controller, each controller having a multi-core processor and accessing a respective subset of the set of rules. A hardware processor is configured to receive a data container; evaluate at a transcoder coupled to a selected controller a rule applicable to content of the data container; and edit the data container according to an outcome of evaluation. A corresponding apparatus for editing data containers and network containing thereof are also provided.Date Recue/Date Received 2020-09-03
A system and method for content-filtering of data containers in a network supporting versatile communications services are disclosed. The content-filtering system is integrated with a content-adaptation system. Several server units handle data containers formulated at source according to different protocols. A content filtering process relies on characterizing each component of a container to produce a set of content descriptors and producing a set of binary conditions for each component according to a preset criterion for each descriptor. A set of rules is devised where each rule applies a respective Boolean expression to a subset of the conditions to prescribe a respective content-editing action. Methods of specifying and evaluating a rule's Boolean expression are disclosed. A formal graph is used to define inter-dependence of rules.
An engine for editing contents of data containers has a set of processors which hosts a set of controllers, each controller coupled to a respective set of transcoders. A memory device stores an array of Boolean variables characterizing the contents of a container, and an array of encoded rules for determining needed content editing, if any. The Boolean variables are determined according to content descriptors and respective criteria. A graphical user interface enables a user to provide the descriptors, the criteria, and the encoded rules. Each transcoder applies the encoded rules to specific containers. A transcoder also performs container adaptation functions which may modify contents of a container to be compatible with a respective receiver. The engine receives containers from clients through a network and directs each container to a respective controller.
A system and method for content-filtering of data containers in a network supporting versatile communications services are disclosed. The content-filtering system is integrated with a content-adaptation system. Several server units handle data 5containers formulated at source according to different protocols. A content filtering process relies on characterizing each component of a container to produce a set of content descriptors and producing a set of binary conditions for each component according to a preset criterion for each descriptor. A set of rules is devised where each rule applies a respective Boolean expression to a subset of the conditions to prescribe a lOrespective content-editing action. Methods of specifying and evaluating a rule's Boolean expression are disclosed. A formal graph is used to define inter-dependence of rules.
A method for conditioning multimedia containers to be compatible with decoding facilities of receivers of diverse types is disclosed. Content of a multimedia container may include components of different encoding formats. Container conditioning also detects and, where feasible, removes undesirable insertions within each content component of a multimedia container. A content component of a container may be filtered, re-encoded, or deleted. Notifications indicating conditions of a container and any modifications performed are appended to the container. A notification may be presented in at least one form compatible with characteristics of a respective receiver. An editing engine implementing the method is associated with a network entity to which multimedia containers are directed. The editing engine accesses a receiver database storing information on several types of receivers and a repository of notification templates encoded in several forms.
A method for conditioning multimedia containers to be compatible with decoding
facilities of receivers of diverse types is disclosed. Content of a multimedia container may include components of different encoding forrnats. Container conditioning also detects and, where feasible, removes undesirable insertions within each content component of a rnultimedia container. A content component of a container may be filtered, re-encoded, or deleted. Notifications indicating conditions of a container and any modifications performed are appended to the container. A notification may be presented in at least one form compatible with characteristics of a respective receiver. An editing engine implementing the method is associated with a network entity to which multimedia containers are directed. The editing engine accesses a receiver database storing information on several types of receivers and a repository of notification templates encoded in several forms.
A method for conditioning multimedia containers to be compatible with decoding facilities of receivers of diverse types is disclosed. Content of a multimedia container may include components of different encoding formats. Container conditioning also detects and, where feasible, removes undesirable insertions within each content component of a multimedia container. A content component of a container may be filtered, re-encoded, or deleted. Notifications indicating conditions of a container and any modifications performed are appended to the container. A notification may be presented in at least one form compatible with characteristics of a respective receiver. An editing engine implementing the method is associated with a network entity to which multimedia containers are directed. The editing engine accesses a receiver database storing information on several types of receivers and a repository of notification templates encoded in several forms.
H04N 21/2343 - Traitement de flux vidéo élémentaires, p. ex. raccordement de flux vidéo ou transformation de graphes de scènes du flux vidéo codé impliquant des opérations de reformatage de signaux vidéo pour la distribution ou la mise en conformité avec les requêtes des utilisateurs finaux ou les exigences des dispositifs des utilisateurs finaux
H04W 4/18 - Conversion de format ou de contenu d'informations, p. ex. adaptation, par le réseau, des informations reçues ou transmises pour une distribution sans fil aux utilisateurs ou aux terminaux
H04W 80/02 - Protocoles de couche liaison de données
48.
METHOD AND SYSTEM FOR MULTIMEDIA MESSAGING SERVICE (MMS) TO VIDEO ADAPTATION
A method and system are disclosed for adapting the media contained in a multimedia messaging service (MMS) message, which may include a presentation, into a single media format such as an audio/video file or stream by creating a logical timeline from information found in the presentation, creating an adaptation pipeline from the logical timeline, and executing the adaptation pipeline.
A method and system are disclosed for adapting the media contained in a multimedia messaging service (MMS) message, which may include a presentation, into a single media format such as an audio/video file or stream by creating a logical timeline from information found in the presentation, creating an adaptation pipeline from the logical timeline, and executing the adaptation pipeline.
A device and method of controlling bitrate in video coding of a sequence of frames including series of Inter frames separated by Intra frames, wherein the coded frames are validated in a video buffering device prior to transmission of the coded frames and wherein the method comprises: measuring frame complexity in the sequence of frames; for each Inter frame, calculating a target buffer level of the video buffering device in relation to a distance between the Inter frame and a next Intra frame; for each Inter frame, calculating a target frame size in relation to the distance between the Inter frame and the next Intra frame, the measured frame complexity, a current buffer level of the video buffering device and the calculated target buffer level of the video buffering device; and using the calculated target frame size to control bitrate in video coding of the sequence of frames.
H04N 7/50 - comportant un codage par transformation et par prédiction
H04N 7/64 - Systèmes pour la détection ou la correction d'erreurs de transmission (codage, décodage ou conversion de code pour la détection ou la correction d'erreurs en général H03M 13/00)
51.
A BUFFER-BASED RATE CONTROL EXPLOITING FRAME COMPLEXITY, BUFFER LEVEL AND POSITION OF INTRA FRAMES IN VIDEO CODING
A device and method of controlling bitrate in video coding of a sequence of frames including series of Inter frames separated by Intra frames, wherein the coded frames are validated in a video buffering device prior to transmission of the coded frames and wherein the method comprises: measuring frame complexity in the sequence of frames; for each Inter frame, calculating a target buffer level of the video buffering device in relation to a distance between the Inter frame and a next Intra frame; for each Inter frame, calculating a target frame size in relation to the distance between the Inter frame and the next Intra frame, the measured frame complexity, a current buffer level of the video buffering device and the calculated target buffer level of the video buffering device; and using the calculated target frame size to control bitrate in video coding of the sequence of frames.
H04N 19/146 - Débit ou quantité de données codées à la sortie du codeur
H04N 19/159 - Type de prédiction, p. ex. prédiction intra-trame, inter-trame ou de trame bidirectionnelle
H04N 19/177 - 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 un groupe d’images [GOP]
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
52.
AN IMPROVED VIDEO RATE CONTROL FOR VIDEO CODING STANDARDS
A method and device for improving rate controlling in video coding of sequences including a series of Inter frames separated by Intra frames, when a decoding delay is considered, comprise for each Inter frame of the series: computing a target frame size, computing a maximum buffer level related to a position of each Inter frame relative to a previous Intra frame and an upcoming Intra frame, and optimizing a transmission buffer level in response to the computed target frame size and the computed maximum buffer level.
H04N 19/15 - Débit ou quantité de données codées à la sortie du codeur par contrôle de la taille réelle des données compressées au niveau de la mémoire avant de décider du stockage dans la mémoire tampon de transmission
53.
AN IMPROVED VIDEO RATE CONTROL FOR VIDEO CODING STANDARDS
A method and device for improving rate controlling in video coding of sequences including a series of Inter frames separated by lntra frames, when a decoding delay is considered, comprise for each Inter frame of the series: computing a target frame size, computing a maximum buffer level related to a position of each Inter frame relative to a previous lntra frame and an upcoming Intra frame, and optimizing a transmission buffer level in response to the computed target frame size and the computed maximum buffer level.
H04N 19/146 - Débit ou quantité de données codées à la sortie du codeur
H04N 19/172 - 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 la zone étant une image, une trame ou un champ
H04N 19/61 - Procédés ou dispositions pour le codage, le décodage, la compression ou la décompression de signaux vidéo numériques utilisant un codage par transformée combiné avec un codage prédictif
54.
MULTI-USERS REAL-TIME TRANSCODING SYSTEM AND METHOD FOR MULTIMEDIA SESSIONS
A method an system for establishing a multi-user communication session, having a session description, between terminals with incompatible media characteristics, in which users with terminals having incompatible media characteristics are invited to participate in the communication session. A transcoding session is set up for enabling transcoding between the incompatible media characteristics of the terminals based on information about the terminals of the users having accepted the invitation, this information comprising the media characteristics of the users' terminals. The session description is established according to the transcoding session and, during the communication session, media streams from the terminal of one user are transcoded according to the transcoding session and the transcoded media streams are transmitted according to the session description to the other users participating in the communication session, using the media characteristics of the terminals of those other users.
H04L 65/1043 - Contrôleurs de passerelle, p. ex. contrôleurs de protocole de commande de passerelle multimédia [MGCP]
H04L 65/4061 - Services par bouton-poussoir, p. ex. bouton-poussoir pour parler ou bouton-poussoir pour vidéo
H04W 4/10 - Services de messagerie instantanée vocale ou de messagerie sur appel
H04W 4/18 - Conversion de format ou de contenu d'informations, p. ex. adaptation, par le réseau, des informations reçues ou transmises pour une distribution sans fil aux utilisateurs ou aux terminaux
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Computer programs which allow audio, video, text, graphic, computer programs and other data encoding and/or decoding, enabling users and content providers to use, create, deliver, play and view audio, video, text, graphic, computer programs and other data over global computer and communications networks. Design, enhancement, installation, maintenance of such computer programs as well as support, namely technical assistance in the installation, use and maintenance of such computer programs.
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
computer programs which allow audio, video, text, graphic, computer programs and other data encoding and/or decoding, enabling users and content providers to use, create, deliver, play and view audio, video, text, graphic, computer programs and other data over global computer and communications networks Design, enhancement, installation, and maintenance of computer programs, as well as support, namely, technical assistance in the installation, use and maintenance of computer programs
