Low-frequency converter for carrier chrominance signal

Details Low-frequency converter for carrier chrominance signal Low-frequency converter for carrier chrominance signal

1988-05-26

1990-09-11

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358330, H04N 576, H04N 980

Patent

active

049567195

ABSTRACT:
A signal, which is synchronous with the horizontal synchronizing signal, is converted by frequency conversion means formed by a PLL circuit and a frequency divider into a continuous wave signal having a frequency equal to the sum of or the difference between the frequencies of a carrier chrominance signal and a low-frequency conversion chrominance signal. A multiplier multiplies the carrier chrominance signal by the continuous wave signal. An output signal from the multiplier is supplied to a low-pass filter to obtain the low-frequency conversion chrominance signal.

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patent: 4807048 (1989-02-01), Yasuda
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"Video Cassette Recorder Development for Consumers", IEEE Transactions on Consumer Electronics, vol. CE-24, No. 3, Aug. 1987, pp. 468-472.

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