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:
Jun. 08, 1993
Filed:
Dec. 20, 1990
Khaled Fazel, Vincennes, FR;
Jean-Jacques Lhuillier, Saint-Maur, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
A system of encoding digital signals comprising a source encoder followed by a transmission channel encoder, which is characterized in that in the case in which the source encoder is a variable-length encoding circuit (10), the channel encoder comprises a series arrangement of a sub-assembly of encoding with selective protection and a sub-assembly of encoding without selective protection. The signals being arranged in information component blocks. The system includes a stage for encoding lengths of blocks for determining along the block an accumulated length of code words supplied by said source encoder and ensuring the encoding of block lengths thus determined, a stage for selective protection of said blocks and a stage for multiplexing the signals supplied by said length encoding and selective protection stages. The corresponding decoding system comprises a transmission channel decoder followed by a source decoder, the channel decoder comprising a series arrangement of a sub-assembly for decoding with non-selective protection and a sub-assembly for decoding with n levels of selective protection.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile