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:
Jul. 18, 2006
Filed:
Nov. 22, 2000
Applicants:
Timothy Forrest Settle, Cumming, GA (US);
Thomas Peter Krauss, Algonquin, IL (US);
Kumar Ramaswamy, Plainsboro, NJ (US);
Inventors:
Timothy Forrest Settle, Cumming, GA (US);
Thomas Peter Krauss, Algonquin, IL (US);
Kumar Ramaswamy, Plainsboro, NJ (US);
Assignee:
Thomson Licensing, Boulogne-Billancourt, FR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 23/02 (2006.01); H04L 27/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hierarchical QAM system allows the transmission of different sources by embedding the relative constellation points. At the transmitter the constellations generated by the different sources are remapped by a grey coder and then combined. At the receiver, the different source data are decoded by using a corresponding grey code demapper.