The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1999
Filed:
May. 20, 1996
Andrew P Person, Farmington Hills, MI (US);
James P Muccioli, Farmington Hills, MI (US);
Yasuhiko Mukaiyama, Rancho Palos Verdes, CA (US);
Kazuma Takeda, Chuoutia Iwaki, JP;
Chrysler Corporation, Auburn Hills, MI (US);
Abstract
An anti-theft device for an automobile audio system automatically prevents the audio system from functioning whenever the audio system is removed from its authorized vehicle and placed into another vehicle. This anti-theft device includes a microprocessor which operates with a bus interface for communicating a vehicle identifier from a vehicle multiplex bus to the central microprocessor. The device also has non-volatile memory within which the first received or authorized vehicle identifier is stored. The subsequently received identifiers are stored on RAM. A battery detector connected to the microprocessor alerts the microprocessor whenever the audio system has been disconnected from the battery source. When the audio system is reconnected to the battery source, the microprocessor automatically compares the vehicle identifier stored within the non-volatile memory to the subsequent vehicle identifier received in the RAM over the multiplex bus, and shuts down the audio system whenever these two vehicle identifiers do not match.