Method for the phase modulation of a carrier signal transmitted from a transmitter to a contactless transponder, and device for implementing same

US9019031B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9019031-B2
Application numberUS-201113806912-A
CountryUS
Kind codeB2
Filing dateJun 24, 2011
Priority dateJun 25, 2010
Publication dateApr 28, 2015
Grant dateApr 28, 2015

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  2. Abstract

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Abstract

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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.

First claim

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The invention claimed is: 1. 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 carrier cycles of said carrier signal, said method comprising, at said transmitter, spreading a phase jump of a symbol in relation to a preceding symbol over a first part of said symbol time, establishment of…

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What does patent US9019031B2 cover?
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…
Who is the assignee on this patent?
Reverdy Jacques, Crochon Elisabeth, Dehmas Francois, and 2 more
What technology area does this patent fall under?
Primary CPC classification H04L27/2014. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Apr 28 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).