Ronald L Jaeger

US Patent:

51535580, Oct 6, 1992

Filed:

Feb 8, 1991

Appl. No.:

7/653640

Inventors:

David A. Robinson - Livonia MI
Curtis R. Balka - Kokomo IN
Ronald H. Jaeger - Indianapolis IN

Assignee:

Delco Electronics Corp. - Kokomo IN

International Classification:

B60R 2510

US Classification:

340428

Abstract:

A vehicle anti-theft system is equipped with a circuit to produce a pulse signal when a disconnected vehicle battery is reconnected, and a normally asleep microcomputer based controller is programmed to wake up upon receipt of the pulse signal or another detector signal, and to evaluate the status of each detector signal and the armed, disarmed and alarm state of the controller to sound an alarm, if appropriate, in response to the battery reconnect signal. The armed, disarmed or alarm state of the controller is stored in a non-volatile memory so that information will be kept indefinitely during power loss.