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:
Dec. 01, 1998
Filed:
Feb. 02, 1996
Applicant:
Inventor:
George P Lambropoulos, Grosse Pointe Woods, MI (US);
Assignee:
TRW Inc., Lyndhurst, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
341176 ; 34082554 ; 34082569 ; 34082572 ;
Abstract
A keyless entry system is presented for controlling a vehicle device function, such as the locking-unlocking functions of a vehicle door lock. The system includes a vehicle transceiver adapted to be mounted on a vehicle for transmitting an interrogation signal and also for receiving a coded reply signal and responding thereto for causing performance of a vehicle device function. The system also includes a plurality of portable remote transceivers, each of which receives an interrogation signal and responds thereto by transmitting a coded reply signal. The coded reply signals from different portable transceivers have different phase delays.