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:
Jul. 07, 2009
Filed:
Dec. 23, 2005
Gilles Bas, Beauvoisin, FR;
Nicolas Dehaese, Aubagne, FR;
Yann Bachelet, Mimet, FR;
Sylvain Bourdel, Ensues la Redonne, FR;
Gilles Bas, Beauvoisin, FR;
Nicolas Dehaese, Aubagne, FR;
Yann Bachelet, Mimet, FR;
Sylvain Bourdel, Ensues la Redonne, FR;
STMicroelectronics (Rousset) SAS Zi de Rousset, Rousset, FR;
Universite de Provence, Marseille Cedex, FR;
Universite Paul Cezanne, Aix En Provence, Cedex, FR;
Abstract
There is provided a detector for extracting binary data frequency-modulated on a carrier signal. An axes generator produces M pairs of logic signals, the logic signals of the same pair being in quadrature. The decoder includes M asynchronous logic zero-crossing detectors producing first pulses and second pulses. An up-counter/down-counter has first, second and third values, and when it has the second value, passing to the first value during a first pulse, and passing to the third value during a second pulse, and a binary decoder generates binary data whose state is not modified when the up-counter/down-counter passes from the first value to the second value or from the third value to the second value. No external time base is required and the decoder has a reduced bit error ratio.