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:
Oct. 13, 1998
Filed:
Nov. 21, 1995
Applicant:
Inventor:
Alain Le Roy, Meylan, FR;
Assignee:
Commissariat A L'Energie Atomique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K / ;
U.S. Cl.
CPC ...
375206 ; 375207 ;
Abstract
Transmission process having spectrum spread phase differential modulation and demodulation using orthogonal pseudorandom sequences. Use is made of two orthogonal pseudorandom sequences (C.sub.E1, C.sub.E2) for spreading the spectrum of the symbols (d.sub.k) to be transmitted and detection takes place of the phase difference between the received signals filtered by filters matched to the two sequences, one being delayed.