Title:
電子キーの通信可否設定システム及び通信可否設定方法
Document Type and Number:
Japanese Patent JP5173927
Kind Code:
B2
Abstract:
A system for setting communication availability of an electronic key for transmitters in a communication subject of the electronic key. The electronic key receives a normal signal from one of the transmitters and returns an ID code. A dummy signal transmission unit of the communication subject generates a dummy signal synchronized with the normal signal and transmits the dummy signal from a transmitter that does not transmit the normal signal. A signal output unit of the electronic key receives a combined signal of the normal and dummy signals and outputs a characteristic signal that varies according to the level of the combined signal. A location determination unit of the electronic key determines the transmitter located near the electronic key from a conforming value corresponding to a variation in the characteristic signal.
Inventors:
Akira Fushimi
Toshimasa Shigaki
Hiroshi Mori
Toshimasa Shigaki
Hiroshi Mori
Application Number:
JP2009116816A
Publication Date:
April 03, 2013
Filing Date:
May 13, 2009
Export Citation:
Assignee:
Tokai Rika Electric Co., Ltd.
International Classes:
B60R25/01; B60R25/10; E05B49/00; B60R25/24; H04B1/59; H04B5/02; H04Q9/00
Domestic Patent References:
| JP2008169663A | ||||
| JP200320838A | ||||
| JP2007191870A | ||||
| JP2007224595A | ||||
| JP2006233533A | ||||
| JP2000186443A | ||||
| JP2005207223A |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Makoto Onda