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:
Nov. 17, 1998
Filed:
Sep. 05, 1996
Applicant:
Inventor:
Yves Thorigne, Verson, FR;
Assignees:
France Telecom, Paris, FR;
La Poste, Boulogne Billancourt, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340572 ; 34082554 ; 235449 ; 235451 ; 342 44 ;
Abstract
Apparatus for the exchange of information by electromagnetic coupling between a passive portable object and a station comprising: first electromagnetic coupling means for the transmission of data between the portable object and the station, and second electromagnetic coupling means independent of the first means for the transfer of energy and a clock signal to the portable object. A filtering circuit is provided on the station side, which behaves as an inductance at the frequency associated with the data transmission and as a high value impedance at the frequency associated with the energy transfer.