Sony Corporation

Sony Ericsson Mobile Communications Japan, Inc.

Makoto Natori

Katsutoshi Itoh

Takeshi Itagaki

Osamu Yoshimura

Mitsuyoshi Yasuda

Minoru Yokoshi

Mitsuhiro Suzuki

Yasunobu Amano

Taku Nagase

Kazuhiko Terashima

Masato Doi

Tsutomu Niimura

Norifumi Kikuchi

Toshiaki Kanemitsu

Hidehiro Kawaguchi

Masaru Fujiwara

A display device for displaying an image using matrix driving includes: an emission element corresponding to each pixel to be displayed, disposed on L lines, with the scanning direction as lines; a display portion whereby the M lines worth of the emission elements are simultaneously driven; and a connection unit for connecting an on-substrate wiring line extracted from the emission element of the display portion externally; with the connection units including connection terminals for connecting each of the on-substrate wiring lines externally, and at least a part of the connection terminals being arrayed two-dimensionally so as to make up M columns; and with each of the M columns worth of the connection terminals being connected with the on-substrate wiring lines which are thinned out (M&#x2212;1) wiring lines at a time.

Display device and wiring routing method

A liquid crystal display and a light source apparatus capable of improving color reproduction compared to related arts without declining intensity. A light source apparatus includes: a cold cathode fluorescent tube including a B phosphor for blue and a G phosphor for green; and a light emitting diode for red, wherein the G phosphor emits a single-spectrum light with a peak wavelength of 510 to 530 nm, and the light emitting diode emits a single-spectrum light with a peak wavelength of 620 to 650 nm.

Light source apparatus and liquid crystal display

A communication system including a communication terminal apparatus and a wireless key apparatus in wireless communication is provided. The communication terminal apparatus includes a first communication unit operable to receive a first wireless signal, and a first control unit operable to determine a distance between the communication terminal apparatus and the wireless key apparatus based on the received first wireless signal, wherein the first control unit limits a predetermined function of the communication terminal apparatus based on determining the distance. The wireless key apparatus includes a second communication unit operable to receive a second wireless signal, and a second control unit operable to determine the distance between the communication terminal apparatus and the wireless key apparatus based on the received second wireless signal, whereby the second control unit decreases transmission power associated with the second communication unit based on the determined distance.

Communication system, communication terminal apparatus and wireless key apparatus

In a case when a wireless communication is carried out between a communication terminal apparatus and a wireless key apparatus in which one of the two apparatuses which carry out the communication becomes a master and the other one becomes a slave, the slave detects a signal from the master and the wireless communication is carried out by a wireless communication system executing the wireless connection between the two apparatuses, it is constituted such that each of the communication terminal apparatus and the wireless key apparatus includes communication means for carrying out the wireless communication, and control means; and in a case when the wireless communication state between the communication terminal apparatus and the wireless key apparatus is a non-connection state, the side which becomes the master is to transmit a signal asking for a 'response from the slave' intermittently by changing the period into a plurality of steps in response to the non-connection time period and the side which becomes the slave is to carry out a reception for searching a signal from the master intermittently by changing the period into a plurality of steps in response to the non-connection time period. It may be expected by this constitution that a communication terminal apparatus such as a mobile telephone terminal can be connected wirelessly with another terminal apparatus rapidly by low power consumption.

Communication system and communication terminal apparatus with changeable transmission/reception periods

A head set apparatus capable of a wireless communication by a predetermined wireless communication system. The wireless communication system includes at least a first communication mode and a second communication mode. The first communication mode enables a data transfer with a partner apparatus and a second communication mode carries out a wireless communication with the partner apparatus with a period shorter than that of the communication in the first communication mode while the wireless connected state remains. The head set apparatus includes a communication section for carrying out a wireless communication by the predetermined wireless communication system and a control section for making the head set function as a head set when the communication state in the communication means is in the first communication mode and for making the head set function as a wireless key for security when the communication state is in the second communication mode.

Head set apparatus, communication terminal apparatus and communication system

A communication terminal apparatus and a wireless key apparatus including judgment means for judging or presuming the wireless communication state or the wireless communication distance in a communication circuit. The communication terminal apparatus and the wireless key apparatus are wireless-connected, and in a case when a communication state for carrying out a wireless communication intermittently is set in each communication circuit and there is judgment or presumption of a predetermined state in the judgment means in a state in which the wireless connection is maintained, the mode setting relating to the function limitation or the notification mode setting relating to the function limitation is to be changed.

Communication system and communication terminal apparatus

A communication system that includes a communication terminal apparatus and a wireless key apparatus and in which wireless communication is possible. A first communication mode attempts a wireless connection in a first period in order to carry out a wireless communication between the communication terminal apparatus and the wireless key apparatus and a second communication mode carries out a wireless communication between the communication terminal apparatus and the wireless key apparatus in a second period longer than that of the connection mode of the wireless connected state.

Communication system, communication terminal apparatus, wireless key apparatus and program

The present invention provides a receiving apparatus and method in which frequency of calculation such as weighting multiplication and memory capacity of a frame buffer can be reduced. To this end, reference phase information and data are separated by a reference phase inverse spreading unit () and a data portion inverse spreading unit (), respectively. A weighting coefficient calculating unit () calculates weighting coefficients based on SNR values as transmission line information from an SNR calculating unit () and sends calculated weighting coefficients to a multiplier (), where phase correction values based on the reference phase information are multiplied by the weighting coefficients to be correction coefficients. A multiplier () multiplies reception data from the data portion inverse speading unit () by the correction coefficients, and output data from the multiplier () is restricted in bit width by the bit width restricting unit () The output data which is restricted in bit width from a coherent receiving unit () and that of a coherent receiving unit () are added by an adder (), and the output data from the adder () is sent to a frame buffer () to be stored. Then, the output data from the frame buffer () is sent to a soft decision input error correcting unit ().

Receiving apparatus and receiving method

It was constituted such that in a case when a function of the communication terminal apparatusis limited in response to a wireless communication state between the communication terminal apparatusand the wireless key apparatus, it is controlled in the wireless key apparatussuch that a communication connection with the communication terminal apparatusis to be carried out; the function of the terminal apparatusis to limited in the communication terminal apparatusin a case when a predetermined communication state cannot be maintained with respect to the wireless key apparatusand at the same time; and in a case when it is detected that the terminal apparatusexists in a predetermined region such as in the vicinity of the apparatusor the like, the function of the terminal apparatusis not to be limited regardless of the communication state with respect to the wireless key apparatus. In this manner, low power consumption can be attempted in a case when a security process of a communication terminal apparatus such as a mobile telephone terminal is carried out by a wireless communication.

A decoding apparatus includes simultaneous decoding means for sequentially Viterbi-decoding a plurality of data sequences over respective data lengths from the start at the same time, and stop means for sequentially comparing likelihoods of respective data sequences which are simultaneously Viterbi-decoded by the simultaneous decoding means and stopping the simultaneous decoding means from decoding a certain data sequence if it is determined based upon the compared result that a likelihood of the certain data sequence is lower than a threshold value.

Decoding apparatus, communication apparatus and decoding method

A portable terminal monitors a signal level of a short-range wireless signal from a wireless communication apparatus. If the signal level drops so low that a state of connection for short-range wireless communications cannot be maintained between the two apparatuses, use of predetermined functions of the portable terminal is limited. A short-range wireless communication facility of the portable terminal and the wireless communication apparatus move into a particular operation mode if communications do not occur therebetween at least for a predetermined time period. In monitoring the signal level of the wireless signal from the wireless communication apparatus in the particular operation mode, the portable terminal reduces a response speed at which to detect a signal level change. This causes the wireless communication apparatus to delay issuing a request for an increase in transmission power, thereby reducing unevenness of the working distance at which to alert a user to the unusual distance traveled between the two apparatuses or beyond which to limit the use of some functions of the portable terminal.

Short range wireless communication system, portable terminal apparatus, and wireless communication apparatus

A communication system that can satisfactorily communicate with a mobile station by a transmitter and receiver of a simple arrangement wherein a plurality of carriers having different frequencies are transmitted simultaneously and data is transmitted on the basis of a phase difference between the carriers. Also, the carriers are multiplied with a predetermined time waveform and transmitted, so that a reception side receives data by use of a time waveform narrower than the above time waveform.

Communication system

According to the present invention makes, even if two of mobile communication terminal apparatuses such as a wireless key apparatus and a mobile telephone terminal apparatus or the like are utilized in various possessing states, it is made possible to maintain a stable distance detection accuracy. In a communication apparatus in which A distance to a connection partner terminal is detected according to a certain parameter and in a case when the distance exceeds a predetermined value, a function limitation or notification to a user is carried out, it is identified that the two of the mobile communication terminals lie in a predetermined appropriate distance according to a manual or automatic method and the proper distance identification information and further receiving state and transmission power at that time if they are necessary are communicated mutually and a parameter used for a distance detection is adjusted.

Communication terminal apparatus and communication system

Removing adverse effects in case error detection using error detection codes cannot be performed correctly, and improving the data transmission efficiency. The turbo decodercompares data which is decoded this time with data which is decoded previous time, both of which are decoded in repetitive decoding processing, to obtain discord number information indicative of the number of discordant sign bits, and sends the information to a terminal I/F unitand a packet flow retransmission controlling unit. Even though it is determined that error detection result from a CRC recalculating unitshows that there exists no bit error, in case the number of discordant sign bits is larger than a predetermined threshold value, it is determined that there is generated error. And, a packet flow retransmission controlling unitsends a signal requesting retransmission of data. Furthermore, data amount to be retransmitted is varied in accordance with the number of discordant sign bits to improve the data transmission efficiency.

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Saitama, Japan

Makoto Natori