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:
Apr. 28, 2015
Filed:
Jun. 24, 2011
Jacques Reverdy, Crolles, FR;
Elisabeth Crochon, Poisat, FR;
Francois Dehmas, Vif, FR;
Florian Pebay-peyroula, Saint Nizier du Moucherot, FR;
Jacques Reverdy, Crolles, FR;
Elisabeth Crochon, Poisat, FR;
Francois Dehmas, Vif, FR;
Florian Pebay-Peyroula, Saint Nizier du Moucherot, FR;
Abstract
A method for phase modulation of a carrier signal from a transmitter to a contactless transponder in which data is coded as consecutive symbols, each corresponding to a predefined number of carrier cycles, and in which a symbol time is at least two cycles of the carrier signal includes, at the transmitter, spreading a phase jump of a symbol in relation to a preceding symbol over a first part of the symbol time. The establishment of the phase jump is completed in the first part of the symbol time. The periods of the cycles are constant during a second part of the symbol time.