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:
Apr. 07, 1998
Filed:
Mar. 14, 1995
George P Lambropoulos, Grosse Pointe Woods, MI (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
A vehicle transceiver is employed in a keyless entry system for gaining entry into a vehicle and also for starting the vehicle's engine. The transceiver includes means for providing a start engine signal representative that the vehicle's engine is to be started, a brake signal representative that the vehicle's brake pedal has been depressed and a seat occupied signal representative that an occupant is located in the vehicle's driver seat. In response to these three signals, the transceiver transmits an interrogation signal to a remote transceiver which responds with a reply signal. The reply signal from the remote transceiver includes a security code that uniquely identifies the remote transceiver from similar remote transceivers. The vehicle's transceiver stores a prestored security code representative of a remote transceiver that may validly gain entry into the vehicle. The received security code from the remote transceiver and the prestored security code are compared and if a match takes place, the engine may be started.