Abstract: A packet collision among a plurality of access points is avoided and QoS is ensured. An access point that shares a wireless channel with a plurality of access points to carry out communication is provided with a function for determining, based on information contained in a polling communication signal or a broadcast signal transmitted from another access point, an access point (preceding AP) that is to perform polling communication immediately before the own station to form a group within which the order of the polling communication is determined, and after determining that a polling communication period of the preceding AP has ended, starting the polling communication period of the own station in a wireless network.

Abstract: Provided is a wireless transmission system including a plurality of access points and an access controller. The access controller determines a start standard time for a polling period for the plurality of access points to perform polling communication with a plurality of wireless terminals. The access controller generates a scheduling setting information indicating timings when the plurality of access points perform polling communication with the plurality of wireless terminals during the polling period. The access controller transmits, to each of the plurality of access points, a polling period start signal including the start standard time and a corresponding portion of the scheduling setting information for each of the plurality of access points. The plurality of access points perform polling communication with the plurality of wireless terminals based on respective polling period start signals.

Abstract: A short-distance radio communication in a steady situation and a long-distance radio communication in an unsteady situation are dynamically switched in a radio communication network, and a steady communication and an unsteady communication are realized through the same radio communication network without affecting the respective communication qualities. A radio communication network system includes radio terminals that enable a multihop communication, and a radio base station. The radio base station and the radio terminals communicate with each other by at least two kinds of transmission radio wave powers. The transmission radio wave power is variably controlled according to a measurement data value by sensors of the radio terminals, or a content of data received by a data communication.

Abstract: An object of the disclosed invention is to provide a polling-based multihop communication system capable of achieving robust communication. Solving means thereof is a (multihop communication) wireless transmission system including, as wireless stations, a base station, a plurality of relay stations connected at multiple stages by using the base station as a root, and a plurality of terminals connected to the relay stations, in which the base station and the relay stations perform communication using polling in one or more service periods which have been allocated to each of the base and relay stations in time division in advance in a system cycle.

Abstract: A packet collision among a plurality of access points is avoided and QoS is ensured. An access point that shares a wireless channel with a plurality of access points to carry out communication is provided with a function for determining, based on information contained in a polling communication signal or a broadcast signal transmitted from another access point, an access point (preceding AP) that is to perform polling communication immediately before the own station to form a group within which the order of the polling communication is determined, and after determining that a polling communication period of the preceding AP has ended, starting the polling communication period of the own station in a wireless network.

Abstract: A power transmission device has a short height and a small size and is capable of transmitting high power with high efficiency. The power transmission device includes first resonators, second resonators coupled to the first resonators via electromagnetic waves, a primary circuit connected to an input end of the first resonator, and a secondary circuit connected to an output end of the second resonator. The first resonator is insulated from the second resonator. Output impedance of the primary circuit is different from input impedance of the secondary circuit. Impedance matching is performed between the output impedance of the primary circuit and impedance in the case of viewing the first resonator side from the input end of the first resonator, and impedance matching is performed between the input impedance of the secondary circuit and impedance in the case of viewing the second resonator side from the output end of the second resonator.

Abstract: To enable configuration and control of a camera at the same time while providing a certain band and low-delay communication for video and/or voice data, a wireless surveillance camera device includes: a signal processing unit that applies signal processing to the video and/or voice data; and a configuration unit that acquires configuration information data related to video parameters and/or wireless parameters in the device, wherein data communication of the video and/or voice data is performed for a wireless base station based on a polling system, and data communication of the configuration information data is performed for the wireless base station based on a carrier sense system.

Abstract: An object of the disclosed invention is to provide a polling-based multihop communication system capable of achieving robust communication. Solving means thereof is a (multihop communication) wireless transmission system including, as wireless stations, a base station, a plurality of relay stations connected at multiple stages by using the base station as a root, and a plurality of terminals connected to the relay stations, in which the base station and the relay stations perform communication using polling in one or more service periods which have been allocated to each of the base and relay stations in time division in advance in a system cycle.

Abstract: To enable configuration and control of a camera at the same time while providing a certain band and low-delay communication for video and/or voice data, a wireless surveillance camera device includes: a signal processing unit that applies signal processing to the video and/or voice data; and a configuration unit that acquires configuration information data related to video parameters and/or wireless parameters in the device, wherein data communication of the video and/or voice data is performed for a wireless base station based on a polling system, and data communication of the configuration information data is performed for the wireless base station based on a carrier sense system.

Abstract: A short-distance radio communication in a steady situation and a long-distance radio communication in an unsteady situation are dynamically switched in a radio communication network, and a steady communication and an unsteady communication are realized through the same radio communication network without affecting the respective communication qualities. A radio communication network system includes radio terminals that enable a multihop communication, and a radio base station. The radio base station and the radio terminals communicate with each other by at least two kinds of transmission radio wave powers. The transmission radio wave power is variably controlled according to a measurement data value by sensors of the radio terminals, or a content of data received by a data communication.

Abstract: Provided is a wireless transmission system including a plurality of access points and an access controller. The access controller determines a start standard time for a polling period for the plurality of access points to perform polling communication with a plurality of wireless terminals. The access controller generates a scheduling setting information indicating timings when the plurality of access points perform polling communication with the plurality of wireless terminals during the polling period. The access controller transmits, to each of the plurality of access points, a polling period start signal including the start standard time and a corresponding portion of the scheduling setting information for each of the plurality of access points. The plurality of access points perform polling communication with the plurality of wireless terminals based on respective polling period start signals.

Abstract: A wireless communication system is configured such that, during a period in which wireless communication is being performed between first and second wireless access points, wireless communication in a first wireless communication sub-network and a second wireless communication sub-network is made to stand by, and during the time other than the period in which wireless communication is being performed, wireless communication in at least one of the first wireless communication sub-network and the second wireless communication sub-network is performed.

Abstract: In a system including a storage battery, primary use side equipment for using the battery, a management server for managing and/or reserving condition of use and histories, etc., in primary use of the storage battery, and re-use side equipment for re-using the storage battery, a condition of use when the storage battery is primarily used, and/or history thereof, etc., are recorded in the management server, and the re-use side equipment obtains the use condition and/or the histories, etc., from the management server when re-using, to notify it to a user, and thereby enabling to confirm fluctuations of performances or capacities of the storage battery, which is generated depending on the use condition when it is used primarily, when re-using the storage battery.

Abstract: There are provided a backlight capable of improving luminance efficiency (brightness efficiency) by devising a structure of a HCFL to allow adjustment of a cold spot temperature, and further provided a liquid crystal display device using the backlight. A distance (cathode length) between one tube end portion and one filament of a pair of filaments is set longer than a distance (cathode length) between the other tube end portion and the other filament. In this manner, at least the tube end portion on the longer cathode length side can be set as the cold spot. Further, a tube end portion of a hot cathode fluorescent tube is arranged outside a lamp house. In this manner, the cold spot set at the tube end portion of the hot cathode fluorescent tube can be arranged outside the lamp house where the temperature is low, and the cold spot temperature can be decreased.

Abstract: In an antenna that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency.

Abstract: Disclosed is an information processing terminal that is capable of receiving television and other broadcasts and providing increased user-friendliness. The information processing terminal, which is capable of communicating with another device; comprising a broadcast receiver which receives a broadcast signal that contains program identification information for specifying a program and/or program scene identification information for specifying a scene of the program and the video information of the program; a display which outputs the broadcast signal that is received by the broadcast receiver; and a storage which extracts the program identification information and/or program scene identification information from the broadcast signal received by the broadcast receiver and stores the extracted information while the display outputs the video information.

Abstract: In an antenna that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency.

Abstract: In an antenna that has high sensitivity to frequencies of narrow bands and over a wide band and that can be small-sized, and in a wireless module, wireless unit and wireless apparatus using this antenna, the antenna is comprised of a transmission line, and variable capacitance means connected to this transmission line, and the variable capacitance means controls the resonant frequency.

Abstract: A communication terminal for connecting or mounting an IC card or the like to examine a ticket through a non-contact communication. The communication terminal includes a function for receiving information stored in the IC card or the like in the ticket examination process and controlling itself automatically. The communication terminal can automatically display the validity of a pass and/or the balance of a prepaid sum in a ticket. Also, the communication terminal can register a specific station so that an email in a pre-registered format is created or sent automatically in the ticket examination process at the registered station.

Abstract: A multi-band transceiver has a function of sharing transmitted and received signals of multiple frequency bands by the same antenna. The multi-band transceiver mounts multiple filters that correspond to the multiple frequency bands and multiple amplifiers for amplifying the transmitted signals on the same substrate, and arranges the multiple filters in close vicinity to the amplifier in the order where the multiple filters are excellent in their temperature characteristic.