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:
Mar. 16, 2004
Filed:
Sep. 05, 2001
Patricia Moreau, Paris, FR;
Valeo Electronique, Creteil, FR;
Abstract
The method of making secure a hands-free access and/or starting system for a motor vehicle, the hands-free system a control unit ( ) placed in the vehicle and a portable identifier ( ) suitable for communicating remotely and cordlessly with the control unit in order to be authenticated, the method consists in recording ( ) a first data item in the identifier by communicating with the control unit in response to detecting starting of the vehicle engine, and in recording ( ) a second data item to replace the first data item in the identifier by communicating with the control unit in response to detecting normal stopping of the vehicle engine. In the case of lending of the vehicle, the borrower of the vehicle must return an identifier containing the second data item in order to prove that he left the vehicle in an authorized manner.