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Title:
KEYLESS ENTRY SYSTEM
Document Type and Number:
Japanese Patent JPH06240939
Kind Code:
A
Abstract:

PURPOSE: To prevent such a fact that a door is unlocked by a third person other than a car owner and any kind of malfunctions from occurring by adding an antitheft function and a safety function to a keyless entry system.

CONSTITUTION: In a keyless entry system consisting of a transmitter being carriable to the outside of an automobile, a receiver provided in the automobile and a locking mechanism, A judging means 12, judging whether an electric wave transmitted out of the transmitter is carried out in the specified procedures or not and outputting a signal operating the locking mechanism when the wave is transmitted by the specified procedures from the transmitter is installed in each rear stage of an antenna 5 and the receiver 2. Differently, this judging means is installed in the transmitter, and only at a time when the transmitting operation is carried out by the specified procedures, this wave transmission is made to be done by the transmitter.


Inventors:
UEDA HIROAKI
Application Number:
JP1993000028102
Publication Date:
August 30, 1994
Filing Date:
February 17, 1993
Export Citation:
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Assignee:
FUJITSU TEN LTD
International Classes:
B60J5/00; B60R25/01; B60R25/10; B60R25/23; E05B19/00; E05B49/00; E05B83/36; H04B1/034; H04Q9/00; (IPC1-7): E05B65/20; B60J5/00; E05B19/00; E05B49/00; H04B1/034; H04Q9/00
Attorney, Agent or Firm:
宇井 正一 (外4名)



 
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