Apparatus and method for disarming automobile alarm system
US5801455A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/1003
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for disarming an automobile alarm system uses the ignition switch of the automobile to create a sequential pulse access code. Toward this end, two commonly available electrical circuits in the vehicle's wiring that are switched on and of by the shifting of a vehicle's ignition switch among power-applying switch positions serve to supply a pulse code of sequential electric pulses to the alarm system to perform a selected function, including entering a valet mode or overriding and disarming the system without a remote control transmitter. Because the shifting of the ignition switch generates a two-wire detectable pulse code, previously-programmed pulse codes can be selected to perform different functions in addition to disarming the system, including using pulse codes to trigger entry of the system into a learning mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.