A system for providing information relating to the source...

H - Electricity – 04 – L

Patent

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Details

H04L 7/00 (2006.01) H04J 3/06 (2006.01) H04N 5/04 (2006.01)

Patent

CA 2240899

A system for providing information on the clock frequency of a data source in a digital receive-transmit system, where the clock frequency value of the data source is sent at a preset rate (FP), comprising a first signal (FS) at a first frequency (FQ1) associated with the data source, a second signal (FT) at a second frequency (FQ2) associated with the transmission system, measuring means for the first frequency (FQ1) of the first signal (FS) against the second frequency (FQ2) of the second signal (FT). According to the prersent invention said measuring means (CP, CN, CM) operates at a measuring rate (F) higher than the preset rate (FP) and a post-processing means (P) is provided to send a coded signal (U') to the receiver (R).

L'invention est un dispositif servant à fournir des informations sur la fréquence d'horloge d'une source de données dans un système de réception et de transmission numérique. Dans ce système, la fréquence d'horloge de la source de données est transmise à un débit préétabli (FP) sous la forme d'un premier signal (FS) à une première fréquence (FQ1) associée à la source de données, et d'un second signal (FT) à une seconde fréquence (FQ2) associée au système de transmission, un dispositif de mesure étant utilisé pour comparer la première fréquence (FQ1) du premier signal (FS) et la seconde fréquence (FQ2) du second signal (FT). Ce dispositif de mesure (CP, CN, CM), qui est incorporé à la présente invention, fonctionne à un débit de mesure (F) plus élevé que le débit préétabli (FP); un dispositif de post-traitement (P) est utilisé pour transmettre un signal codé (U') au récepteur (R).

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