Color signal processing circuit with residual phase error correc

Details Color signal processing circuit with residual phase error correc Color signal processing circuit with residual phase error correc

1991-11-19

1993-02-09

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 22, H04N 9455

Patent

active

051856573

ABSTRACT:
A color signal processing circuit which includes a conversion unit for converting two color difference signals, which are equivalent to color difference signals obtained by color demodulation of a color signal by using two color difference axes intersecting perpendicularly to each other. The color difference signals are converted into a color amplitude signal corresponding to the amplitude of the color signal and a color phase signal corresponding to the phase of the color signal. Also included is a signal processing unit for processing at least either of the color amplitude signal and the color phase signal. Thus, it is easy to obtain a color difference signal in which a residual phase error included in the color signal is eliminated.

REFERENCES:
patent: 4500919 (1985-02-01), Schreiber
patent: 4551749 (1985-11-01), Narita
patent: 4667223 (1987-05-01), Flamm
patent: 4721904 (1988-01-01), Ozaki et al.
patent: 4734757 (1988-03-01), Akiyama
patent: 5130787 (1992-07-01), Ozaki et al.

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