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:
Jun. 20, 2006
Filed:
Mar. 11, 2002
Thierry Belinguier, Saint-Maurice, FR;
Thierry Belinguier, Saint-Maurice, FR;
Valeo Electronique, Creteil Cedex, unknown;
Abstract
A recognition device is described that is used to control the unlocking of vehicle openings and/or to authorize the start-up of the vehicle. The device includes a first emitter which, on command, can send a first user identification signal over a carrier wave having a given first frequency (ν) to a receiver. The device also includes a second emitter which can emit at least one second user identification signal over a carrier wave having a second frequency (ν) which is different from the first frequency such that the second signal can act as an identifier signal in the shadow zones where the first signal is not recognized.