Audio device security system

Details Audio device security system Audio device security system

1996-10-04

2000-10-31

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082532, 340 101, 3405681, 3405682, 3405683, 340426, G06F 704

Patent

active

061409359

ABSTRACT:
An audio device 1 is installed in a motor vehicle with a vehicle security system 2, 3, 4. The radio 1 has circuitry 21 to detect a connection to the vehicle power supply, a microprocessor 11 to inhibit the operation of the radio after an interruption of the connection, an interface 6 and a connection to a bus 9, 10 for communicating data between the radio 1 and the vehicle security system 2, 3, 4, and a data verification unit 15 with a non-volatile memory 13 for verifying data communicated to the radio. Following an interruption of the connection the radio is automatically reset to operational if the data are communicated and verified, and if the data are not communicated or not verified the radio may only be reset manually.

REFERENCES:
patent: 4494114 (1985-01-01), Kaish
patent: 4720700 (1988-01-01), Seibold et al.
patent: 4808981 (1989-02-01), Seibold
patent: 5552789 (1996-09-01), Schuermann

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