Abrégé

The present specification relates to a wireless power transmission device. The wireless power transmission device, according to one embodiment of the present specification, may comprise: a first induction coil; an inverter for converting direct current power to alternating current and providing same to the first induction coil; and a magnetic assembly comprising a plurality of magnetic elements disposed in a Halbach array on the outer side of the first induction coil.

Classes IPC  ?

• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p. ex. de l'alignement
• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H01F 7/02 - Aimants permanents
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
• H01F 38/14 - Couplages inductifs
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont

Abrégé

The method of wirelessly transmitting power according to an embodiment may comprise performing an operation of analog ping on each of multiple coils of a primary coil; determining whether there is an object based on a result of the operation of analog ping; determining whether there is a receiving device including a secondary coil that can be coupled to the primary coil by magnetic induction by performing an operation of digital ping when it is determined that there is an object; and wirelessly transmitting power to a receiving device or stopping transmitting power thereto when it is determined that there is the receiving device.

Classes IPC  ?

• H02J 50/60 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique sensibles à la présence d’objets étrangers, p. ex. détection d'êtres vivants
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception

Abrégé

The wireless charging device according to an embodiment may comprise a rectangular shield assembly in which a shield and a first coil for delivering power to a terminal including a second coil by magnetic induction coupling are formed, a main PCB including an inverter that converts DC power into AC power and supplies it to the first coil, and a sub-PCB attached to one corner of the shield assembly and including a USB Type-C port. The sub-PCB may be disposed outside the first coil. The USB Type-C port may be exposed in a direction perpendicular to a plane on which the terminal is placed.

Classes IPC  ?

• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques
• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

The wireless charging device according to an embodiment may comprise a shielding assembly where a shield, a first coil for power transfer by magnetic inductive coupling, and a bracket are formed, an NFC coil fixed to the bracket, and a main PCB including an inverter that converts DC power into AC power and supplies it to the first coil. The bracket may be formed outside the first coil. The shielding assembly may further include a coil connector for connecting the first coil and the NFC coil to the main PCB. The coil connector may consist of a plurality of protruding pins, and the plurality of protruding pins may be inserted into holes formed at corresponding positions on the main PCB so that the first coil and the NFC coil are electrically connected to the main PCB.

Classes IPC  ?

• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
• H05K 1/11 - Éléments imprimés pour réaliser des connexions électriques avec ou entre des circuits imprimés

Produits et services

CD-ROM writers; CD-ROM drives; CD burners; DVD-ROMs; DVD drives; Universal serial bus (USB); USB drives; USB flash drives; USB memories; USB memory cards; Optical discs; Optical disc drives; Data storage devices; Data storage media; Data storage apparatus; CD drives for computers; Disk drives for computers; Computer peripheral devices; Flash memory card readers; Solid-State Drive (SSD); Portable SSD; External SSD; USB SSD; USB drives with NAND flash memories.

Abrégé

The method for transmitting power wirelessly may comprise: transmitting power wirelessly to a receiving device, receiving, from the receiving device, a first Q factor including a Q frequency and a Q value measured by the receiving device while transmitting the power, and obtaining a second foreign object boundary line by adjusting a first foreign object boundary line based on a first Q point corresponding to the first Q factor in a Q plane with a Q frequency and a Q value as two axes. The method may detect, as a second Q factor, a Q frequency and a Q value of a resonance circuit included in a transmitting apparatus, and continue or stop a power transmitting operation based on a comparison of a second Q point corresponding to the second Q factor and the second foreign object boundary line in the Q plane.

Classes IPC  ?

• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance

Abrégé

The method for transmitting power wirelessly according to an embodiment may comprise checking a position of a receiving device while wirelessly transmitting power to the receiving device, and changing a charging stop level which is compared with power loss which corresponds to a difference between transmitted power transmitted to the receiving device and received power received by the receiving device when the receiving device is outside a charging area. The receiving device is outside the charging area may be determined based on that the received power is equal to or greater than reference power and a power control level when transmitting the power to the receiving device is equal to or greater than a reference value. The charging stop level may be returned to an original value when the power loss is lower than the changed charging stop level until a predetermined time elapses after changing the charging stop level.

Classes IPC  ?

• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p. ex. de l'alignement
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif

Produits et services

USB operating software; Downloadable computer software programs; Downloadable cloud computing software; Computer application software for digital or electronic tablets; Computer software; Software for mobile phones; CD-ROM writers; CD-ROM drives; CD burners; DVD-ROMs; DVD drives; Universal serial bus (USB); USB drives; USB flash drives; USB memories; USB memory cards; Optical discs; Optical disc drives; Data storage devices; Data storage media; Data storage apparatus; CD drives for computers; Disk drives for computers; Computer peripheral devices; Flash memory card readers.

Produits et services

Downloadable USB operating software; Downloadable computer software programs, namely, downloadable computer software programs for reading and writing of CD ROMs and DVD ROMs; Downloadable cloud computing software for reading and writing of CD ROMs and DVD ROMs; Downloadable computer application software for digital or electronic tablets for reading and writing of CD ROMs and DVD ROMs; Downloadable computer software for reading and writing of CD ROMs and DVD ROMs; Downloadable software for mobile phones for reading and writing of CD ROMs and DVD ROMs; CD-ROM writers; CD-ROM drives; CD burners; blank recordable DVD-ROMs; DVD drives; Universal Serial Bus (USB) hardware; blank USB flash drives; blank USB memory cards; blank optical discs; Optical disc drives; Blank data storage disc; Data storage drives, namely, blank hard drives for computers; Computer network server, namely, data storage server; CD drives for computers; Disk drives for computers; Computer peripheral devices; Flash memory card readers

Produits et services

USB operating software; Downloadable computer software programs; Downloadable cloud computing software; Computer application software for digital or electronic tablets; Computer software; Software for mobile phones; CD-ROM writers; CD-ROM drives; CD burners; DVD-ROMs; DVD drives; Universal serial bus (USB) devices; USB drives; USB flash drives; USB memories; USB memory cards; Optical discs; Optical disc drives; Data storage devices; Data storage media; Data storage apparatus; CD drives for computers; Disk drives for computers; Computer peripheral devices; Flash memory card readers.

Produits et services

Downloadable USB (universal serial bus) operating software; downloadable computer software programs for managing data of PCs, smartphones, and the cloud, and connecting data into CD/DVD/BD drives; downloadable cloud computing software for managing data of PCs, smartphones, and the cloud, and connecting data into CD/DVD/BD drives; downloadable computer application software for digital or electronic tablets for managing data of PCs, smartphones, and the cloud, and connecting data into CD/DVD/BD drives; downloadable computer software for managing data of pcs, smartphones, and the cloud, and connecting data into CD/DVD/BD drives; downloadable computer application software for mobile phones, namely, software for managing data of PCs, smartphones, and the cloud, and connecting data into CD/DVD/BD drives; CD-ROM writers; CD-ROM drives; CD burners; DVD-ROMs, namely, blank DVD-ROMs for sound or video recording; DVD drives; universal serial bus (USB) devices, namely, USB hardware; blank USB flash drives; USB computer memory hardware; USB memory cards; blank optical discs; optical disc drives; computer data storage apparatus, namely, high-speed storage subsystems for storage and backup of electronic data either locally or via a telecommunications network; CD drives for computers; disk drives for computers; computer peripheral devices; flash memory card readers

Produits et services

Batteries; Battery packs; Auxiliary battery packs; Battery charge devices; Portable rechargers; Wireless charging devices; Charging sockets; Wireless charging pads for smartphones; Power units (batteries); Cell phone battery chargers; Cases for batteries.

Abrégé

The present invention provides wireless power transmitting method and apparatus. The wireless power transmitting method according to an embodiment of the present invention may measure a resonance frequency while changing an operating frequency of a resonance circuit, compare the measured resonance frequency with a reference frequency, and wirelessly transmit power when the measured resonance frequency is lower than the reference frequency. The reference frequency may be determined based on two or more among a self resonance frequency of the resonance circuit, a first resonance frequency measured for a receiving device, a second resonance frequency measured for a reference object and a third resonance frequency measured for the receiving device and the reference object.

Classes IPC  ?

• H02J 50/60 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique sensibles à la présence d’objets étrangers, p. ex. détection d'êtres vivants
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception

Abrégé

Provided is a method of designing coils for transmitting or receiving power wirelessly. The method includes determining a length and a width of a core on which a first coil and second and third coils are disposed, and determining radii and a number of turns of the first to third coils, wherein each of the second and third coils overlaps one side of the first coil. The method further includes determining an operating frequency of the coils and a thickness of the core, determining an optimal thickness of a foil constituting the first to third coils by measuring AC resistances of the first to third coils, and determining an optimal width of the foil by measuring the AC resistances of the first to third coils, whereby an enhanced configuration of the coils is provided.

Classes IPC  ?

• G06F 30/30 - Conception de circuits
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif

Produits et services

Wireless chargers; Wireless chargers for smartphones; Portable battery chargers; Charging stands for smartphones; Smartphone application software for charging; Computer software for charging; Application software for smartphones. Recharging of batteries and accumulators; Computer and telephone battery recharge services.

Produits et services

Wireless chargers; Wireless chargers for smartphones; Portable battery chargers; Charging stands for smartphones; Downloadable smartphone application software for charging; Downloadable computer software for charging; Downloadable application software for smartphones for charging Recharging of batteries and accumulators; Computer and telephone battery recharge services

Abrégé

The present invention provides a dust sensor comprising an impactor assembly for passing only relatively small particles among particles contained in air; a light emitting unit for radiating light in a path through which the air introduced through the impact assembly passes; and a light receiving unit for receiving light scattered from particles included in the air passing through the path. The impact assembly may comprise an upper case, a first impactor, and a second impactor. The upper case may include an inlet and an outer downward protruding portion. The first impactor may include a central downward depression and a plurality of slots. The second impactor may include an outlet, a central upward protruding portion, a double-bent portion, an outer upward protruding portion and a guide portion.

Classes IPC  ?

• G08B 17/107 - Déclenchement par la présence de fumée ou de gaz utilisant un dispositif émetteur et récepteur de lumière pour détecter une diffusion de lumière due à de la fumée
• G01N 15/06 - Recherche de la concentration des suspensions de particules
• G01N 21/53 - Dispersion, c.-à-d. réflexion diffuse dans un corps ou dans un fluide dans un courant de fluide, p. ex. dans la fumée
• A47L 9/28 - Montage de l'équipement électrique, p. ex. adaptation ou fixation à l'aspirateurCommande des aspirateurs par des moyens électriques
• G01N 15/00 - Recherche de caractéristiques de particulesRecherche de la perméabilité, du volume des pores ou de l'aire superficielle effective de matériaux poreux
• G01N 15/02 - Recherche de la dimension ou de la distribution des dimensions des particules

Abrégé

Disclosed is an optical disk drive for wireless power transmission. The optical disk drive in an embodiment of the present invention comprises a tray on which a optical disk is to be seated; a driving unit for rotating the optical disk to be seated on the tray and reading or writing the optical disk; a wireless power transmitting module to be seated on the tray and comprising a primary coil and a transmitting circuit unit; a power supply unit for supplying power; and a controller for controlling the power supply unit to supply power to the wireless power transmitting module when determining that the wireless power transmitting module is seated on the tray.

Classes IPC  ?

• H01F 38/00 - Adaptations de transformateurs ou d'inductances à des applications ou des fonctions spécifiques
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H01F 38/14 - Couplages inductifs
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• G11B 13/04 - Enregistrement utilisant simultanément ou sélectivement des procédés ou des moyens entrant dans des groupes principaux différentsSupports d'enregistrement correspondantsReproduction simultanée ou sélective correspondante par procédé magnétique et procédé optique
• G11B 7/12 - Têtes, p. ex. formation du spot du faisceau lumineux ou modulation du faisceau lumineux
• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception
• H02J 7/34 - Fonctionnement en parallèle, dans des réseaux, de batteries avec d'autres sources à courant continu, p. ex. batterie tampon

Abrégé

The distance measuring apparatus according to the present invention may comprise: a light emitting unit for emitting light; a light receiving unit comprising one or more cells configured to receive incoming light and output a signal corresponding to an amount of the received light; a motor; a first rotary unit for changing a path of outgoing light which is emitted from the light emitting unit while being rotated by the motor; and a second rotary unit for changing a path of the incoming light so that the incoming light enters the light receiving unit while being rotated by the motor synchronously with the first rotary unit. Therefore, it is possible to simplify the structure of the apparatus which measures distances in a wide angular range.

Classes IPC  ?

• G01S 7/00 - Détails des systèmes correspondant aux groupes , ,
• G01S 7/497 - Moyens de contrôle ou de calibrage
• G01S 17/08 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement
• G01S 7/481 - Caractéristiques de structure, p. ex. agencements d'éléments optiques
• G01S 17/48 - Systèmes de triangulation active, c.-à-d. utilisant la transmission et la réflexion d'ondes électromagnétiques autres que les ondes radio
• G01S 17/42 - Mesure simultanée de la distance et d'autres coordonnées

Abrégé

The distance measuring apparatus according to the present invention may comprise: a distance measuring unit; a motor; and a rotary wireless transceiver, comprising a rotor core rotated by the motor, a stator core, and power coils and signal coils respectively wound around the rotor core and the stator core, configured to wirelessly supply power to the power coil wound around the rotor core via the power coil wound around the stator core and wirelessly transmit the signal output from the distance measuring unit to the signal coil wound around the stator core via the signal coil wound around the rotor coil. The rotor core and the stator core may be in a shape of a circular plain such that the rotor core and the stator core face each other with a plane, perpendicular to a rotation axis of the motor, interposed between them.

Classes IPC  ?

• G01S 17/00 - Systèmes utilisant la réflexion ou la reradiation d'ondes électromagnétiques autres que les ondes radio, p. ex. systèmes lidar
• G01S 17/87 - Combinaisons de systèmes utilisant des ondes électromagnétiques autres que les ondes radio
• H02K 11/22 - Dispositifs optiques
• G01S 7/481 - Caractéristiques de structure, p. ex. agencements d'éléments optiques
• G01C 3/08 - Utilisation de détecteurs électriques de radiations
• G01S 17/10 - Systèmes déterminant les données relatives à la position d'une cible pour mesurer la distance uniquement utilisant la transmission d'ondes à modulation d'impulsion interrompues
• H02K 11/042 - Redresseurs associés à des parties tournantes, p. ex. à des noyaux rotoriques ou à des arbres tournants
• H02K 7/14 - Association structurelle à des charges mécaniques, p. ex. à des machines-outils portatives ou des ventilateurs
• G01S 7/4863 - Réseaux des détecteurs, p. ex. portes de transfert de charge
• H02K 21/22 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant autour des induits, p. ex. volants magnétiques

Abrégé

Disclosed herein are an optical disc drive and a feeding base. The feeding base is coupled to a spindle motor base and a stepping motor base. Main and sub-shafts for guiding inner and outer circumferential movements of an optical pickup unit are mounted on the feed base. The feeding base is made of a steel plate of a rectangular rim shape having an empty center corresponding to a space in which the optical pickup unit moves, the feeding base includes two guides for guiding the coupling location of the spindle motor base, and at least one guide of the two guides is formed by protruding the steel plate to form a funnel shape such that the side cross section of the at least one guide may have a slope section corresponding to a cone and a straight-line section corresponding to a cylinder.

Classes IPC  ?

• G11B 7/08 - Dispositions ou montage des têtes ou des sources lumineuses par rapport aux supports d'enregistrement
• G11B 33/12 - Disposition des éléments de structure dans les appareils, p. ex. d'alimentation, des modules
• G11B 7/085 - Dispositions ou montage des têtes ou des sources lumineuses par rapport aux supports d'enregistrement comportant des dispositions pour amener le rayon lumineux dans sa position de travail ou pour l'en écarter

Abrégé

Disclosed herein is a distance measuring apparatus. The distance measuring apparatus includes a light-emitting unit configured to radiate light in a pulse form of a specific width, a light-receiving unit configured to include a plurality of cells for receiving reflected light radiated by the light-emitting unit and reflected by an object, and a processor configured to perform one or more of an operation for calculating a first distance of the object using a first method based on the locations of one or more cells which belong to the plurality of cells and on which the reflected light is focused and an operation for calculating a second distance of the object using a second method based on the time when the reflected light is reached and to correct the first distance calculated using the first method based on the second distance calculated using the second method.

Classes IPC  ?

• G01C 25/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou des dispositifs mentionnés dans les autres groupes de la présente sous-classe
• G01C 3/10 - Mesure des distances dans la ligne de viséeTélémètres optiques en utilisant un triangle parallactique ayant des angles variables et une base de longueur fixe, dans la station d'observation, p. ex. dans l'instrument

Abrégé

The present invention relates to a method and an apparatus for wirelessly transmitting power. A method for wirelessly transmitting power according to an embodiment can measure and store signal strength values corresponding to inductive coupling degrees with a secondary coil of a receiving apparatus sequentially with respect to two or more primary coils included in two or more resonance circuits, select a primary coil related to a largest signal strength value among the signal strength values as an operating coil, adjust a reference value of a power loss value which becomes a basis for entering a mode for detecting power loss based on a difference between a signal strength for a primary coil adjacent to the operating coil and a signal strength value for the operating coil, and transmit power to a wireless power receiving apparatus through the operating coil.

Classes IPC  ?

• H01F 27/42 - Circuits spécialement adaptés à la modification ou la compensation des caractéristiques électriques des transformateurs, réactances ou bobines d'arrêt
• H01F 37/00 - Inductances fixes non couvertes par le groupe
• H01F 38/00 - Adaptations de transformateurs ou d'inductances à des applications ou des fonctions spécifiques
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques
• H01F 38/14 - Couplages inductifs

Abrégé

Disclosed are a method and an apparatus for transmitting power wirelessly. The apparatus for wirelessly transmitting power includes: a power converter including an inverter for converting DC power into AC power, a resonance circuit, and two sensors for extracting a message transmitted from a receiving apparatus receiving power through magnetic induction of the resonance circuit; and a controller for controlling an operation of the inverter by selectively using messages extracted by the two sensors. When the controller fails in decoding the message extracted by one of the two sensors, the controller decodes the message extracted by the other of the two sensors and controls the operation of the inverter based on the decoded message. One of the two sensors is connected to a front stage of the inverter and the other of the two sensors is connected to a rear stage of the inverter.

Classes IPC  ?

• H02J 17/00 - Systèmes pour l'alimentation ou la distribution d'énergie par ondes électromagnétiques
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance
• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception

Abrégé

An optical disc device includes an optical pickup and a transfer unit for linearly moving the optical pickup in a radial direction; and a locking module that is mounted on a rear side of the tray for unlocking the tray from the body, the locking module including a locking part having a hook for engaging a locking projection formed on the body and being mounted to be rotatable; a circular gear being mounted to be rotatable in connection with the transfer unit; a first connecting part for rotating by a linear force transmitted through the transfer unit moving outward; and a second connecting part for rotating by a force transmitted sequentially from the first connecting part and the circular gear and to transmit torque to the locking part to cause the hook to be unlocked from the locking projection.

Classes IPC  ?

• G11B 17/056 - Introduction indirecte, c.-à-d. avec des moyens externes de chargement avec des moyens de chargement coulissants
• G11B 17/03 - Positionnement ou verrouillage des disques individuels des disques en rotation pendant l'opération de transduction dans des réceptacles ou des plateaux

Abrégé

Disclosed are an apparatus and a method for transmitting power wirelessly. The method for transmitting power wirelessly includes: detecting whether a receiving apparatus moves while wirelessly transmitting the power to the receiving apparatus through magnetic inductive coupling; performing the magnetic inductive coupling with the receiving apparatus for each of two or more primary coils when it is detected that the receiving apparatus moves; and determining whether to change the primary coil connected with the receiving apparatus based on a result of the magnetic inductive coupling. A signal strength message received from the receiving apparatus is received and stored every primary coil magnetically inductively coupled with the receiving apparatus, and it is determined that the received apparatus is connected through a primary coil corresponding to a largest value among signal strength values included in the signal strength message.

Classes IPC  ?

• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception
• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p. ex. de l'alignement
• H04B 5/00 - Systèmes de transmission en champ proche, p. ex. systèmes à transmission capacitive ou inductive
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/12 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif du type couplage à résonance

Abrégé

A method of controlling power in an optical disc apparatus is provided. A method of controlling power in an optical disc apparatus includes: measuring a temperature of an inside of the optical disc apparatus; calculating, based on the measured temperature, a driving value with which a laser diode (LD) outputs target power; and driving the LD with the calculated driving value. The driving value uses a function in which a temperature acts as a variable and may be calculated for a read channel and a write channel in a divided manner. In the read channel, a driving value of read power in a read mode and a driving value of read power in a record mode may be calculated using different functions, and in the write channel, a driving value of at least one segment of record power divided into two or more segments may be calculated using different functions.

Classes IPC  ?

• G11B 7/1263 - Commande de la puissance pendant la transduction, p. ex. par surveillance

Abrégé

Disclosed herein is a reception device for wireless charging. The reception device for wireless charging may include a reception antenna configured to generate an electric current based on a change of magnetism and a charging circuit unit configured to convert the electric current generated by the reception antenna into direct current. The reception antenna and the charging circuit unit may be connected to a flexible board. Accordingly, the reception device can be attached to the casing of a smart terminal while minimizing a change in the thickness of the smart terminal. A task for connecting the antenna and charging circuit unit of the reception device can be eliminated. A wireless charging function can be assigned to a smart terminal by simply replacing the casing of the smart terminal not having the wireless charging function.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• H02J 50/10 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant un couplage inductif

Abrégé

A method for controlling a tray in an optical disc drive comprises: setting first and second flags for indicating a current state of the tray, the state of the tray including an open state, a closed state and a state in which the tray moves; and controlling a movement operation of the tray, base on values of the two flags and a time when a counter electromotive force is generated in a motor for moving the tray. If a request of performing a tray closing operation in the state in which the tray is opened is received, the tray closing operation is performed, and the value of the second flag is changed. If the counter e.m.f is detected after a first time from the time when the tray closing operation is started, the driving of the motor is stopped, and the value of the first flag is changed.

Classes IPC  ?

• G11B 17/03 - Positionnement ou verrouillage des disques individuels des disques en rotation pendant l'opération de transduction dans des réceptacles ou des plateaux

Abrégé

An apparatus for rotating disc is provided, the apparatus according to an exemplary embodiment is characterized in that an anti-slip torque that is applied to the upper face of the disc by using the clamp unit and the elastic member is stronger than a rotation torque that is generated by the turn table to inhibit slipping of the optical disc from the turn table.

Classes IPC  ?

• G11B 17/028 - Positionnement ou verrouillage des disques individuels des disques en rotation pendant l'opération de transduction
• H02K 5/167 - Moyens de support des paliers, p. ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des paliers à contact lisse ou des chapeaux de palier sphériques
• H02K 21/22 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents avec des induits fixes et des aimants tournants avec des aimants tournant autour des induits, p. ex. volants magnétiques

Abrégé

A spindle motor is provided, the motor including a bearing assembly including an upper surface-opened cylindrical bearing housing and a bearing accommodated in the bearing housing and formed with a rotation shaft hole; a stator including a core coupled to a periphery of the bearing housing and a coil wound on the core; a rotation shaft inserted into the rotation shaft hole; a rotor including a disk-shaped yoke coupled to the rotation shaft and a magnet coupled to the yoke to face the core; and a suction magnet arranged at the yoke facing the core, wherein the bearing housing includes a body coupled to the core and a core fixture bent from the body to face the core, and the suction magnet is so arranged as to face the core fixture corresponding to an external side of a bent unit bent from the body for forming the core fixture.

Classes IPC  ?

• H02K 21/00 - Moteurs synchrones à aimants permanentsGénératrices synchrones à aimants permanents
• H02K 7/09 - Association structurelle avec des paliers avec des paliers magnétiques
• G11B 19/20 - EntraînementDémarrageArrêtCommande correspondante
• H02K 7/08 - Association structurelle avec des paliers