System for echo cancellation comprising a ghost cancellation...

Details System for echo cancellation comprising a ghost cancellation... System for echo cancellation comprising a ghost cancellation...

H - Electricity

04

N

H04N 5/21 (2006.01) H04L 25/02 (2006.01)

Patent

CA 2086122

A system for echo cancellation for use in particular in television receivers. The system features a ghost cancellation reference signal which exhibits improved performance in noisy environments and which exhibits the flat and wide bandwidth necessary for effective channel characterization while exhibiting a higher and more evenly distributed amplitude versus time characteristic than that provided by known, non-cyclic ghost cancellation signals.

Système de suppression d'échos, destiné en particulier à être utilisé dans les récepteurs de télévision. Le système est caractérisé par un signal de référence de suppression d'images fantômes qui assure des performances améliorées en milieux bruyants et dont la bande passante est plate et large, ce qui est nécessaire pour une caractérisation efficace des canaux, tout en présentant également une caractéristique d'amplitude par rapport au temps plus élevée et répartie de façon plus uniforme que celle fournie par les signaux de suppression d'images fantômes non cycliques connus.

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