To provide a power transmission type wireless communication system capable of starting a communication terminal with driving electric waves transmitted from a communication master, and improving the noise-resistance of wireless communication.
A noise monitoring part 19 of a tuner 10 monitors the generation of CH1 noise in a communication environment of an electronic key system 3. When the CH1 noise exists, the emission (data transmission) of a request code Src in smart communication is switched from the CH1 to CH2. An electronic key 2 has receivers 15a, 15b corresponding to CH1 and CH2, and identifies a channel of the noise according to which receiver receives the request code Scr. Then, the electronic key 2 returns ID signals Sid to a vehicle 1 with the CH2 not influenced by the noise.
COPYRIGHT: (C)2010,JPO&INPIT
Hiroshi Nakano
Watanabe Giju
| JP2005299305A | ||||
| JP2008202305A |
Makoto Onda