Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-06-28
2009-08-18
Anderson, Matthew D (Department: 2618)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S041200, C455S420000, C455S421000, C455S567000, C455S574000, C370S468000, C707S793000
Reexamination Certificate
active
07577447
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.
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Itagaki Takeshi
Itoh Katsutoshi
Natori Makoto
Yasuda Mitsuyoshi
Yokoshi Minoru
Aminzay Shaima Q
Anderson Matthew D
Frommer William S.
Frommer & Lawrence & Haug LLP
Presson Thomas F.
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