Parallel sound if with reference carrier derived from...

Details Parallel sound if with reference carrier derived from... Parallel sound if with reference carrier derived from...

H - Electricity

04

N

350/97

H04N 5/60 (2006.01) H04N 5/62 (2006.01)

Patent

CA 2010669

The present invention is for a low buzz television signal processing system. The picture signal is detected by a quasi-synchronous detector wherein the picture carrier is amplitude limited and video tank filtered for insertion into the video mixer for deriving the composite video signal. The sound channel comprises a single parallel resonant tuned circuit forming a bandpass filter with a passband centered at the sound carrier frequency. The modulated sound carrier is fed to a sound detector which is also fed the same filtered picture carrier signal provided by the video tank for providing the 4.5 MHz intercarrier sound signal.

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