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:
Apr. 26, 1994
Filed:
Oct. 08, 1991
Antoine Chouly, Paris, FR;
Khaled Fazel, Vincennes, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
Encoding and decoding devices (5, 105) influencing digital signals transmitted with encoded modulation. For the encoding a channel encoder (12) performs a code concatenation to distribute the protection redundancy bits over various symbol periods of the encoded modulation, for example, over two multiplexed 16 QAMs. A source encoder (11) may effect a reduction of the input bit rate. A differential encoder (31) may be used for the encoding so as to ensure the detection of the phase rotation invariance of the code. At the receiver end a decoding device (105) performs the corresponding operations in reverse. The invention may be used for digital signal transmission of: television, microwave, mobile radio signals, for storage on compact disc or on digital video recorder, for communication between computers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile