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. 18, 2002
Filed:
Dec. 10, 1999
Applicant:
Inventors:
Jean-Jacques Avenel, Chennevieres/Marne, FR;
Virginie Tessier, Charenton le Pont, FR;
Assignee:
Valeo Securite Habitacle, Creteil, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08G 1/01 ;
U.S. Cl.
CPC ...
G08G 1/01 ;
Abstract
The invention relates to a device for low-frequency communication by magnetic coupling of the type comprising a magnetic field emitter and a receiver placed in an identification member, one of either the emitter or the receiver being furnished with a loop antenna, in which the other of either the emitter or the receiver is constituted by the association of three coils ( ) wound around three perpendicular axes (Ox, Oy, Oz) defining a trihedral so as to obtain an omnidirectional magnetic field by supplying said coils with currents of like frequency.