Subscription tv audio carrier recovery system

H - Electricity – 04 – N

Patent

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350/97

H04N 1/44 (2006.01) H04N 7/16 (2006.01)

Patent

CA 1101116

ABSTRACT OF THE DISCLOSURE A subscription TV decoder for processing encoded audio and video signals in which the TV program audio information is received as an audio subcarrier includes means for decoding the video signal, a filter for separating the decoded video and audio signals, and a filter for separating the audio signal from the audio information subcarrier. The audio information subcarrier is multiplied to raise it to the frequency of the audio signal and is then recombined with the decoded video signal.

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