Communication system for limiting the use of a com

专利名称：Communication system for limiting the use

of a communication apparatus

发明人：Itoh, Katsutoshi,Yasuda, Mitsuyoshi,Natori,

Makoto,Yoshimura, Osamu,Yokoshi,Minoru,Itagaki, Takeshi

申请号：EP05253884.0申请日：20050622公开号：EP1613040B1公开日：20070801

摘要：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 twoapparatuses which carry out the communication becomes a master and the other onebecomes a slave, the slave detects a signal from the master and the wireless

communication is carried out by a wireless communication system executing the wirelessconnection between the two apparatuses, it is constituted such that each of thecommunication 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 communicationterminal apparatus and the wireless key apparatus is a non-connection state, the sidewhich 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 receptionfor 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 bythis constitution that a communication terminal apparatus such as a mobile telephoneterminal can be connected wirelessly with another terminal apparatus rapidly by lowpower consumption.

申请人：SONY ERICSSON MOBILE COMM JP

地址：JP

国籍：JP

代理机构：Turner, James Arthur

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