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:
Aug. 24, 1982
Filed:
Jul. 07, 1980
Applicant:
Inventor:
Roger P Alexis, Neuilly-sur-Seine, FR;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04K / ;
U.S. Cl.
CPC ...
375-1 ; 364604 ; 364728 ;
Abstract
According to the invention, it is proposed to use the code words D as the spreading word for the spectrum. The auto-correlation function of these words have zero values for all even temporary shifts other than the zero shift, the auto-correlation function then assuming the maximum or the minimum value. In addition, use is made of the secondary lobes of this auto-correlation function for carrying out, at the receiving end, the synchronization of a clock in the rhythm of the binary elements forming the spreading code words. Use: counteracting radio-electric interferences.