Apparatus for protecting automobile against unauthorized operati

Details Apparatus for protecting automobile against unauthorized operati Apparatus for protecting automobile against unauthorized operati

1996-05-08

1998-01-13

Elms, Richard T.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 103, 307 104, 180287, 2353825, 34082531, 34082534, H04L 932

Patent

active

057083088

ABSTRACT:
An antitheft apparatus for an automobile includes an engine starting key storing an identification code allocated inherently, a code reading circuit for reading out the identification code from the engine starting key inserted in a key cylinder installed on the automobile, a code collating circuit for collating the identification code supplied from the code reading circuit with a verification code stored previously, and an engine start decision circuit for enabling engine starting operation when the identification code coincides with the verification code, while upon occurrence of a discrepancy between the identification code and the verification code, for enabling the engine starting operation only when a door or accelerator pedal of the automobile is actuated in a predetermined manner. The automobile can be operated even when the key is lost or damaged and the identification code is unavailable.

REFERENCES:
patent: 4438426 (1984-03-01), Adkins
patent: 4965460 (1990-10-01), Tanaka
patent: 4990906 (1991-02-01), Kell
patent: 5079435 (1992-01-01), Tanaka
patent: 5172094 (1992-12-01), Stadler
patent: 5513105 (1996-04-01), Krones
patent: 5532522 (1996-07-01), Dietz
patent: 5554891 (1996-09-01), Shimizu
patent: 5559491 (1996-09-01), Stadler
patent: 5583383 (1996-12-01), Denz
patent: 5600723 (1997-02-01), Woodall

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