The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2009
Filed:
Jun. 28, 2005
Katsutoshi Itoh, Tokyo, JP;
Mitsuyoshi Yasuda, Tokyo, JP;
Makoto Natori, Saitama, JP;
Osamu Yoshimura, Kanagawa, JP;
Minoru Yokoshi, Tokyo, JP;
Takeshi Itagaki, Tokyo, JP;
Katsutoshi Itoh, Tokyo, JP;
Mitsuyoshi Yasuda, Tokyo, JP;
Makoto Natori, Saitama, JP;
Osamu Yoshimura, Kanagawa, JP;
Minoru Yokoshi, Tokyo, JP;
Takeshi Itagaki, Tokyo, JP;
Sony Ericsson Mobile Communications Japan, Inc., Tokyo, JP;
Abstract
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.