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Title:
BURGLARPROOF DEVICE
Document Type and Number:
Japanese Patent JPH0414575
Kind Code:
A
Abstract:

PURPOSE: To prevent burglar by providing a detection signal canceling means to invalidate the output of a switching means to an alarm controlling circuit in a state to maintain an armed state when a regular unlocking signal is generated.

CONSTITUTION: An infrared-ray light receiving circuit 141 is provided to the rear of a vehicle, and it is connected to a detection signal canceling circuit 140. An output is provided to a timer 144 when a comparator 142 in the circuit 140 compares the output signal from the circuit 141 with a code signal stored in a memory circuit 143 and when they match with each other. In addition, an actuator 145 to unlock a locking device is operated to open a trunk lid 87. Then, even if the output of a short pulse width is generated from a one-shot multivibrator 146, the output of the trunk lid 87 is so invalidated that an RS flip-flop 97 remains in a state of setting without operating a one-shot vibrator 148 to change-over automatically in a state of alarm.


Inventors:
TSUTSUMI SHUNSAKU
Application Number:
JP1990000115195
Publication Date:
January 20, 1992
Filing Date:
May 02, 1990
Export Citation:
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Assignee:
ALPHA CORP
International Classes:
E05B45/06; B60R25/01; B60R25/10; B60R25/20; B60R25/24; B60R25/34; E05B49/00; E05B81/54; E05B81/64; E05B83/36; G08B13/00; (IPC1-7): E05B45/06



 
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