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:
Feb. 24, 1981
Filed:
Oct. 01, 1979
Applicant:
Inventors:
Jean-Marc Kergosien, Paris, FR;
Francois Le Carvennec, Paris, FR;
Assignee:
Thomson-CSF, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358145 ;
Abstract
The transmission process comprises a coding of the sound signal consisting of converting it into words of n bits at a frequency double the line frequency and during each synchronization pulse transmitting four words of n bits corresponding to different samples, which introduces a redundancy of two and a decorrelation between the different samples. The process involves a decoding operation consisting of comparing the two representations of the sample transmitted during the two synchronization pulses and selecting one representation for each sample as a function of the result of the comparison.