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:
May. 28, 1991
Filed:
Jun. 23, 1989
Yannick Tanguy, Paris, FR;
Jose Robineau, Ste Genevieve des Bois, FR;
Thomson-CSF, Puteaux, FR;
Abstract
The disclosed method consists in sampling the phase of the detected modulated signal, inside each symbol T period, with a comb of sampling pulses obtained from N clock pulses evenly spaced out by a time interval equal to T/N; computing the differential phase angle d.phi. between symbols for each phase sample of the detected current symbol, encoding each differential phase angle d.phi. in assigning it an encoding cost, computing the sums of the encoding costs for the samples of the same order belonging to a determined number L of consecutive symbols; memorizing, among the N sums obtained, that sum which gives the greatest result, taking, as a symbols synchronizing clock, that clock which, in the comb of pulses, has the same order as the order of the sample which have lead to the greatest sum and decoding the differential phase angle having the same order as the memorized sample.