Anti-theft car protection system
First Claim
Patent Images
1. An anti-theft protection system for a motor vehicle having an engine and a key with a transponder comprising:
- means for receiving a code of the key transmitted from the transponder;
means for controlling the engine; and
means for transmitting an engine start permission signal to said engine controlling means when said code as received coincides with code a as registered;
said engine controlling means including;
means for detecting an anomaly of one of said code receiving means, said engine controlling means and said signal transmitting means; and
means for allowing start of the engine without receiving said engine start permission signal if said anomaly is detected.
1 Assignment
0 Petitions
Accused Products
Abstract
An anti-theft car protection system comprises a transmitter-receiver for receiving a code of the key, an immobilizer unit for collating said code as received with a code as registered and transmitting an engine start permission signal to an engine control unit when said code as received coincides with said code as registered, and means, cooperating with said immobilizer unit, for removing repetition of key operation upon start of the engine.
52 Citations
50 Claims
-
1. An anti-theft protection system for a motor vehicle having an engine and a key with a transponder comprising:
-
means for receiving a code of the key transmitted from the transponder; means for controlling the engine; and means for transmitting an engine start permission signal to said engine controlling means when said code as received coincides with code a as registered; said engine controlling means including; means for detecting an anomaly of one of said code receiving means, said engine controlling means and said signal transmitting means; and means for allowing start of the engine without receiving said engine start permission signal if said anomaly is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A method of protecting a motor vehicle from a theft, the motor vehicle having an engine, a key with a transponder, a transmitter-receiver, an engine control unit and an immobilizer unit, the method comprising the steps of:
-
receiving a code of the key transmitted from the transponder; transmitting an engine start permission signal to the engine control unit when said code as received coincides with a code as registered; detecting an anomaly of one of the transmitter-receiver, the engine control unit and the immobilizer unit; and allowing start of the engine without receiving said engine start permission signal if said anomaly is detected. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
-
Specification