H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 1/00 (2006.01) H04L 25/03 (2006.01) H04N 5/21 (2006.01) H04N 5/455 (2006.01) H04N 5/44 (2006.01) H04N 5/00 (2006.01) H04N 7/24 (2006.01)
Patent
CA 2394280
In a system for receiving a signal containing digital data representing HDTV image information in the form of multilevel symbols formatted into groups of successive fields, each field comprising a field segment, a plurality of data segments, and associated sync components, the received signal is demodulated to produce a demodulated signal. The demodulated signal is comb-filtered to reject NTSC co-channel interference to produce a filtered signal. The filtered signal is trellis decoded with a trellis decoder employing a truncated non-Euclidean metric.
Selon l'invention, dans un système destiné à recevoir un signal contenant des données numériques représentant une information d'image HDTV sous la forme de symboles multiniveaux formatés en groupes de champs successifs, chaque champ comprenant un segment de champ, plusieurs segments de données, et des composants synchronisés associés, le signal reçu est démodulé afin de produire un signal démodulé. Le signal démodulé est filtré au moyen d'un filtre en peigne afin d'éliminer une interférence de co-canal NTSC et d'obtenir un signal filtré. Le signal filtré est ensuite passé dans un décodeur treillis utilisant une métrique tronquée non Euclidienne.
Kim Jaehyeong
Markman Ivonete
Parthasarathy Vasudevan
Craig Wilson And Company
Thomson Licensing S.a.
LandOfFree
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