H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 7/08 (2006.01) H04N 7/015 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01) H04N 7/50 (2006.01) H04N 7/52 (2006.01) H04N 7/60 (2006.01)
Patent
CA 2166387
A television sigoal transmission systom comprises a multiplexer (34) for combining a compressed video data signal and one or more auxiliary data signals to form a multiplexed signal for transmission over a channel of fixed bandwidth. The multiplexer (34) is controlled to vary the ratio of the components comprising the multiplexed signal to insure satisfactory reproducible image quality in response to the received compressed video data signal. The compressed video data signal may be buffered (26) prior to combination with the auxiliary data, in which case the multiplexer (34) is also further controlled to vary the ratio of the components comprising the multiplexed signal to maintain the fullness of the buffer (26) at an acceptable level.
Système de transmission de signaux de télévision comprenant un multiplexeur (34) assurant la combinaison d'un signal vidéo comprimé, et d'un ou plusieurs signaux auxiliaires de données de façon à former un signal multiplexé transmissible sur un canal d'une largeur de bande donnée. Le multiplexeur (34) est commandé de manière à faire varier les pourcentages des composantes du signal afin d'assurer une qualité satisfaisante et reproductible de l'image en réponse au signal vidéo reçu. Ledit signal peut être stocké (26) dans un tampon avant sa combinaison avec les signaux de données, auquel cas le multiplexeur (34) est aussi commandé à nouveau opur faire varier les pourcentages des différentes composantes du signal multiplexé, afin de maintenir le remplissage du tampon (26) à un niveau acceptable.
Citta Richard W.
Fimoff Mark
Hauge Raymond C.
Marks & Clerk
Zenith Electronics Corporation
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