Phase adjusting system for carrier chrominance signal

Details Phase adjusting system for carrier chrominance signal Phase adjusting system for carrier chrominance signal

1980-09-12

1982-09-07

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 40, H04N 9535

Patent

active

043486894

ABSTRACT:
A phase of a composite color television signal is adjusted by utilizing a signal which is one-field after or before relative to a current signal and which is a signal of the nearest scanning line. A difference signal between the color television signal and a signal derived from a one-field memory is applied to a band-pass filter and an output signal of the band-pass filter is added to the color television signal so that the phase of the carrier chrominance signal is adjusted by 180 degrees. The phase adjuster according to the present invention is applicable to video signal processing systems such as a noise reducer and a differential PCM coder.

REFERENCES:
patent: 4178609 (1979-12-01), Beuter
patent: 4212028 (1980-07-01), Drewery
patent: 4223341 (1980-09-01), Drewery
patent: 4241363 (1980-12-01), Maeyama
patent: 4263612 (1981-04-01), Gibson

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