EP 1249125 A1 20021016 - RECEIVER IMPROVEMENT FOR EXPANDED INFORMATION CAPACITY FOR EXISTING COMMUNICATION TRANSMISSIONS SYSTEMS
Title (en)
RECEIVER IMPROVEMENT FOR EXPANDED INFORMATION CAPACITY FOR EXISTING COMMUNICATION TRANSMISSIONS SYSTEMS
Title (de)
EMPFÄNGERVERBESSERUNG ZUR ERWEITERUNG DER INFORMATIONSKAPAZITÄT FÜR BESTEHENDE N
Title (fr)
AMELIORATION D'UN RECEPTEUR AUGMENTANT LA CAPACITE D'INFORMATION DE SYSTEMES EXISTANTS DE TRANSMISSION DE COMMUNICATIONS
Publication
Application
Priority
- US 0033479 W 20001208
- US 17138499 P 19991222
Abstract (en)
[origin: WO0147260A1] The present invention improves the performance of data receivers used for demodulating the data signals described in the international application WO 99/55087 by employing a novel method of spectrum processing to synthesize a full double sideband spectrum with the video signal and the data signal in quadrature. The novel techniques of the present invention enable several important advantages including but not limited to signal to noise ratio improvement, relaxation of circuit design constraints, mixed signal integrated circuit implementation, and for higher data rates. The present invention also improves the demodulation of television signals.
IPC 1-7
IPC 8 full level
H04L 5/12 (2006.01); H04L 27/00 (2006.01); H04N 5/455 (2006.01); H04N 7/08 (2006.01); H04N 7/081 (2006.01); H04N 11/24 (2006.01); H04N 5/44 (2011.01)
CPC (source: EP)
H04L 5/12 (2013.01); H04N 5/455 (2013.01); H04N 7/08 (2013.01); H04N 11/30 (2018.12); H04N 21/4382 (2013.01); H04N 5/4446 (2013.01)
Citation (search report)
See references of WO 0147260A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0147260 A1 20010628; AU 2081801 A 20010703; CA 2395810 A1 20010628; EP 1249125 A1 20021016; JP 2003518839 A 20030610; MX PA02006191 A 20021209
DOCDB simple family (application)
US 0033479 W 20001208; AU 2081801 A 20001208; CA 2395810 A 20001208; EP 00984146 A 20001208; JP 2001547862 A 20001208; MX PA02006191 A 20001208