Abstract: According to one embodiment, a power relay stand which supports an electronic device includes a receiver, a transfer module and a transmitter. The receiver is provided so as to face a charging stand and receives power transmitted from the charging stand through contactless power transmission. The transfer module transfers the power received by the receiver. The transmitter is provided so as to face the electronic device and transmits the power transferred from the transfer module to the electronic device through the contactless power transmission.

Abstract: According to one embodiment, a wireless power transfer system performs electrical power transfer and signal communication by magnetic field resonance. A power transfer apparatus includes a first resonator configured to resonate at a predetermined frequency and to switch a Q-factor between high and low, and a first controller configured to set the Q-factor of the first resonator high in the electrical power transfer, and to set the Q-factor of the first resonator low in the signal communication. The power reception apparatus includes a second resonator configured to resonate at the predetermined frequency and to switch a Q-factor between high and low, and a second controller configured to set the Q-factor of the second resonator high when performing the electrical power transfer and to set the Q-factor of the second resonator low when performing the signal communication.

Abstract: According to one embodiment, an apparatus includes first and second liquid crystal lenses, a pair of temples, a sensor, and a driver. The first liquid crystal lens includes a first liquid crystal layer and a plurality of first control electrodes on the first liquid crystal layer. The sensor is provided on one of the pair of temples, and detects a contact position on a detector plane. The driver applies a plurality of voltage to the plurality of the first control electrodes. A focal length of the first liquid crystal lens is determined according to an amount of movement of the contact position when the contact position continuously moves along a longitudinal direction of the sensor. Each voltage value is determined according to the focal length of the first liquid crystal lens.

Abstract: According to one embodiment, a wireless power transfer system performs electrical power transfer and signal communication by magnetic field resonance. A power transfer apparatus includes a first resonator configured to resonate at a predetermined frequency and to switch a Q-factor between high and low, and a first controller configured to set the Q-factor of the first resonator high in the electrical power transfer, and to set the Q-factor of the first resonator low in the signal communication. The power reception apparatus includes a second resonator configured to resonate at the predetermined frequency and to switch a Q-factor between high and low, and a second controller configured to set the Q-factor of the second resonator high when performing the electrical power transfer and to set the Q-factor of the second resonator low when performing the signal communication.

Abstract: According to one embodiment, an information playback apparatus according to one embodiment of the invention includes an acquisition module configured to acquire content data, an analysis module configured to analyze the content data to generate viewing and listening environment control information based on an analysis result, a viewing and listening control module configured to control a viewing and listening environment based on the viewing and listening environment control information, and a playback control module configured to control playback of the content data under the viewing and listening environment.

Abstract: Disclosed is an FEC encoding method, including: sequentially storing payloads each included in sequentially supplied media packets into a buffer memory; detecting whether number of the payloads stored reaches a prescribed number or whether a period of time since the payloads have started to be stored into the buffer memory reaches a certain period of time; when detecting that the number of the payloads reaches the prescribed number, performing FEC operation using the prescribed number of payloads stored to generate first information for FEC; when detecting that the period of time since the payloads have started to be stored into the buffer memory reaches the certain period of time, performing FEC operation using the payloads stored into the buffer memory to generate second information for FEC; and outputting the first and second information together with the media packets corresponding thereto.

Abstract: In a radio information communication system of this invention, at least part of a transmission data string is first divided into a plurality of bit strings when data is transmitted by radio in a radio station on the transmission side and a plurality of carrier waves of different frequencies are subjected to primary modulation by the divided bit strings. Then, the primary-modulated carrier waves are subjected to secondary modulation by the spread spectrum system such as the frequency hopping system or chirp system and modulated waves obtained by the secondary modulation are transmitted.

Abstract: Since a transmission route is set in accordance with the number of relaying broad band switching nodes present between two terminating nodes of a plurality of broad band switching nodes, a through-put characteristic, an affecting degree due to occurrence of a defect, the traffic of the entire network is distributed. In addition, when the system is started up, transmission routes with a minimum band width necessary for routing control have been set in all the broad band switching nodes. Whenever a call takes place, a transmission route is set and the band width is variably set by using an intelligent inference mechanism. Moreover, an intelligent distributed control for distributing such an intelligent inference mechanism in the broad band switching nodes is used. Thus, the load of processing a call can be decreased, while the reliability of the network and the improvement of the operating efficiency can be achieved.

Abstract: A panel for free access to a signal cable and a power cable is installed on the floor of an office room and forms a network of signal cables in an office. The posts of this panel are mounted on the floor. A floor plate is secured to the upper ends of the posts. A rack plate is arranged between the floor plate and the floor, and the rack plate is secured to the posts. The height of the floor plate and the rack plate is adjusted by adjusting the engaging position by rotating a leg to be engaged with the threaded holes of the posts. The floor plates are composed of a plate made of glass, reinforced cement mixed with foamable styrol or an aluminum honeycomb structure. The rack plate is composed of a transparent polypropylene plate. Further, the surface of the floor plate is covered with a surface material such as a carpet. The signal cables are arranged in the space between the floor plates and the rack plates. The power cables are arranged in the space between the rack plates and the floor.

Abstract: A communication system having a plurality of communication stations and a modulation transmission line for transmitting a burst modulation signal between the plurality of communication stations in time division multiple access, at least one of the plurality of communication stations comprising, sampling timing generating device for generating a sampling timing whose bits have been synchronized with the burst modulation signal before receiving the burst modulation signal transmitted from another communication station, quasi-synchronous detecting device for quasi-synchronously detecting the burst modulation signal and for successively outputting a first vector signal on a phase plane, sampling device for successively sampling the first vector signal obtained by the quasi-synchronous detecting device in a sampling timing generated by the sampling timing generating device, phase rotation amount estimating device for estimating a phase rotation amount of the first vector signal in accordance with a correlation amo

Abstract: A panel for free access to a signal cable and a power cable is installed on the floor of an office room and forms a network of signal cables in an office. The posts of this panel are mounted on the floor. A floor plate is secured to the upper ends of the posts. A rack plate is arranged between the floor plate and the floor, and the rack plate is secured to the posts. The height of the floor plate and the rack plate is adjusted by adjusting the engaging position by rotating a leg to be engaged with the threaded holes of the posts. The floor plates are composed of a plate made of glass, reinforced cement mixed with foamable styrol or an aluminum honeycomb structure. The rack plate is composed of a transparent polypropylene plate. Further, the surface of the floor plate is covered with a surface material such as a carpet. The signal cables are arranged in the space between the floor plates and the rack plates. The power cables are arranged in the space between the rack plates and the floor.

Abstract: In the frequency-division multiplex broadband multimedia network of this invention, a plurality of transmission paths are laid out in a matrix, with transmission path switches being arranged at respective lattice points. Each transmission path switch monitors a transmission path current. When a transmission path switch detects that a current has been cut off, a portion where a communication trouble is caused is disconnected from the network, and the switch connects a portion at the downstream side of this tansmission path switch to another adjacent transmission path.

Abstract: In a communication network system, a central equipment unit transmits, over a down link, a frame signal carrying subframe information signals addressed to respective terminal equipment units, on a time-division multiplexing basis. The frame signal consists of a delay measurement window field carrying address information designating one of the terminal equipment units for delay measurement and a data field carrying the subframe information signals addressed to the terminal equipment units. When a terminal equipment unit is polled from the central equipment unit to measure the delay time, it transmits a response signal to the central equipment unit after a predetermined time interval from the reception timing of the frame signal, such that the response signal arrives at the central equipment unit within the delay measurement window field of the next frame signal.

Abstract: A central station and a plurality of local stations are coupled through a signal transmission path. Data signals addressed to local stations, to which terminal devices such as telephone sets are coupled, are transmitted over the signal transmission path on a time-division multiplexing basis. Each local station sends the data signal onto the signal transmission path at a timing depending on a measured transmission delay time of a signal on the signal transmission path between itself and the central station. One transmission frame consists of subframes of data signals addressed to the local stations and a window frame for transmission delay time measurement. A maximum network length depends on the time duration of the window frame. In order to extend the time duration of the window frame and to increase the maximum network length, data signals for the same terminal device coupled to a local station are multiplexed in one time slot of a subframe.

Abstract: A time-division multiplexing communication network comprising a central station and a plurality of local stations, in which information signals are transmitted from the local stations to the central station on a time-division multiplexing basis, and the central station transmits information signals to the local stations on a time-division multiplexing basis. The central station sequentially requests that local stations transmit a test signal in order to prevent collision of transmission signals from the local stations. Each local station, of which a test signal transmission is requested, transmits the test signal to the central station. The central station sends back the test signal to the local station which transmitted this test signal. The local station measures transmission delay time from transmission to reception of the test signal, and adjusts transmission timing of the information signal to be transmitted to the central station based on the measured delay time.

Abstract: An information transmission system in which a plurality of data terminal equipments (DTEs) are coupled with a communication medium through corresponding medium attachment units (MAUs). The DTE transmits and receives an information signal in a format having a preamble section including a predetermined bit pattern and a data section. The MAU modulates and demodulates the information signal. The MAU is arranged to replace part of the preamble with random data in order to quickly detect the collision of information signals from a plurality of DTEs on the communication medium.

Abstract: In a communication network in which a plurality of information processors are coupled to a communication medium through medium attachment units (MAUs), a pilot signal generator sends a pilot signal of a reference level to a predetermined point of the communication medium. Each MAU has a gain controller to control the gains of transmission and reception amplifiers. This gain controller adjusts the gain of the reception amplifier when the pilot signal is received in accordance with the reception level thereof and then allows a test signal to be transmitted to the communication medium through the transmission amplifier. The gain of the transmission amplifier is adjusted in accordance with the reception level of this test signal such that the reception level of the test signal becomes equal to the reception level of the pilot signal.

Abstract: A plurality of information processors are coupled by respective modems to a communication medium at points thereof. Transmission and reception of information signals among the modems are effected through a headed located at a predetermined point on the communication medium. A pilot signal generator is provided which sends out a pilot signal having a predetermined reference level through the headend to the communication medium. Each modem is arranged to properly adjust the gain of its transmitting amplifier according to a reception level of the pilot signal for an improvement of signal transmission quality and a reliable detection of a signal collision.

Abstract: A local network, in which a plurality of data processors are coupled by modems to a communication medium, is disclosed. Each modem is arranged to shift a carrier frequency to a first and second frequency according to a digital signal from the associated data processor. In order to provide for reliable and quick detection of a collision of signals simultaneously transmitted from a plurality of modems to the communication medium, the difference between the first and second frequencies is set such that one cycle of a beat signal generated on the communication medium due to a collision of signals is not longer than one bit time length of the digital signal.