Nec Corporation

Kyocera Corporation

Yasushi Toda

Tetsuya Yuda

Yohei Umezawa

A portable information terminal provided with a group terminal connection status management section which manages the connection statuses of a plurality of portable information terminals belonging to the same group connected by a tethering function; a host terminal order determination section which determines selection order of a portable information terminal to serve as a host terminal from among the portable information terminals belonging to the same group including its own terminal, based at least on reception quality from the base station, remaining battery capacity, and either a contracted allowable data transmission speed or a maximum data transmission speed notified from a network; and a control section which controls whether to operate as the host terminal or to communicate with the base station via the host terminal, based on the determined selection order.

Portable information terminal, communication system, communication control method, and program

In a communication system using a standby screen, a portable communication terminal accesses a communication server at a predetermined time interval, uses RSS to receive and store new messages in a cyber sub-community in which the portable communication terminal participates, and sequentially displays tag buttons on the standby screen to display new-message arrivals with message-issuing member names and titles displayed on the buttons.

Communication system, device and program for exchanging messages between members of cyber communities

There is provided a wire bonding apparatus operated steadily at a high speed without excitation of vibrations of an XY stage and a capillary which are movable parts. The wire bonding apparatus is configured so as to have a composite target path generating section for generating a target path in which the deceleration part of a go path and the acceleration part of a return path are composed to one continuous path, for a path part of reciprocating movement of said target path indicating a motion process of either one or both of the XY stage and capillary.

Wire bonding apparatus

A defined level comparator compares a track error signal with each of a predetermined upper limit level and a predetermined lower limit level so as to generate two comparison signals. A logic unit ANDs two comparison signals so as to obtain a track pull-in enabling signal. A header component removal arithmetic unit removes a header component from the track pull-in enabling signal in accordance with a header area signal. A track polarity inverter outputs a land/groove detection signal in which a polarity of a signal level is inverted every timing at which a signal level of the track pull-in enabling signal is in a track pull-in enabling state. A track polarity correcting and determining unit compares a polarity signal held by a sampling holder with the land/groove detection signal in the header area. The track polarity correcting and determining unit corrects the signal level of the land/groove detection signal to the signal level held by the sampling holder when both signal levels are different from each other.

Optical disc apparatus and kand/groove detecting circuit

A communication system that performs time-division multiple access mobile communication using radio in a service area in which are disposed a plurality of base stations connected to a central station through a communication network. The central station selects and designates a master base station and a selected base station close to the master base station. The central station instructs the selected base station to synchronize a radio signal transmitted by the selected base station with a radio signal transmitted by the master base station. The central station further selects at least one additional base station close to the selected base station. The central station instructs the at least one additional base station to synchronize a radio signal transmitted by the additional base station with a radio signal transmitted by the selected base station. The process is repeated until all of the base stations are transmitting a synchronized radio wave. The central station also sequentially designates base stations to monitor each other, and further gives each base station criteria for judging an abnormality, thereby establishing a monitoring network.

Growing community of inventors

Tokyo, Japan

Yasushi Toda