Device for digital demodulation of video and audio elements of television signal
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United States of America Patent
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Oct 29, 1996
Grant Date -
N/A
app pub date -
May 11, 1995
filing date -
May 20, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for digital demodulation of the video and audio elements of a television signal has a digital preprocessing stage for conditioning a complex digital signal for digital demodulation of a television signal at intermediate frequency, a first complex mixing device shifting the video sub-carrier to the frequency 0, a common mixing device used on the input side for the demodulation of the audio signals, and the audio signal processing is not split until after this mixing device. Therefore, fully digital signal processing is possible for television signals from the intermediate frequency, with limited filter complexity.
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