Trellis decoder for atsc 8vsb

H - Electricity – 04 – N

Patent

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H04N 7/64 (2006.01) H04L 1/00 (2006.01) H04L 1/22 (2006.01)

Patent

CA 2209254

A traceback device of a trellis decoder includes a memory for storing survivor path information as much as a decision depth, a multiplexing unit for decoding the survivor path information received from the memorizing means, and a traceback unit receiving the survivor path information of lower bits decoded by the multiplexing means and state output of itself, to carry out a state transition and trace back the decoded value of lower bits.

L'invention est un dispositif de suivi incorporé à un décodeur de codes en treillis qui comporte une mémoire pour stocker des informations sur les chemins survivants, ainsi qu'une profondeur de décision, une unité de multiplexage pour décoder des informations sur les trajets survivants reçus de la mémoire et une unité de suivi qui reçoit les informations sur les trajets survivants de poids faible décodées par le dispositif de multiplexage pour effectuer une transition d'état et faire le suivi de la valeur décodée de poids faible.

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