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:
May. 16, 1995
Filed:
Jul. 02, 1993
Antoine Chouly, Paris, FR;
Americo Brajal, Villeneuve Le Roi, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
Digital signal transmission system which operates by coded modulation of a constellation, the system comprising an encoder (5) which includes a modulator (13) installed at a transmitting station, and a decoder (105) which includes a demodulator (113) installed at a receiving station. A multistage channel encoder (12) carries out a concatenation of internal and external codes to blocks and divides the coding over various partitioning levels of the constellation. The coded symbol blocks are subjected to the work of a frequency-division interleaver (37), the modulator (13) operating according to an orthogonal carrier frequency-division multiplexing technique. The decoder (105) includes circuitry to carry out reverse operations to those carried out for the coding.