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Title:
VEHICLE-USE ELECTRONIC KEY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2004/031024
Kind Code:
A1
Abstract:
A vehicle-use electronic key system comprising a control unit (14) mounted on a real car (100A), and an electronic key (12) for sending a response signal (Sa) on receiving a request signal (Sr) sent from the control unit (14) via a transmission antenna (72), the antenna (72) being installed near the middle of the real car (100A). Specifically, when a line segment (wheel base) (154) connecting the center (150a) of a front wheel (150) to the center (152a) of a rear wheel (152) is assumed, the transmission antenna (72) is installed in any location within a range from the upper part to the lower part of the real car (100A) within a range from a 1/4 point (P1) to a 3/4 point (P2) of the wheel base (154) with the center (150a) of the front wheel (150) as a reference.

Inventors:
KONNO TAKESHI (JP)
KOMAKI AKIRA (JP)
Application Number:
PCT/JP2003/012274
Publication Date:
April 15, 2004
Filing Date:
September 25, 2003
Export Citation:
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Assignee:
HONDA MOTOR CO LTD (JP)
KONNO TAKESHI (JP)
KOMAKI AKIRA (JP)
International Classes:
B60R25/04; B60R25/24; B62H5/00; B62J99/00; (IPC1-7): B62H5/00; B60R25/10; B62J39/00
Foreign References:
JPH0321575A1991-01-30
JPH03295777A1991-12-26
EP1211170A22002-06-05
EP1211170A22002-06-05
JPH0321575A1991-01-30
Other References:
See also references of EP 1547912A4
Attorney, Agent or Firm:
Chiba, Yoshihiro (1-1 Yoyogi 2-chom, Shibuya-ku Tokyo, JP)
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