Video signal processing circuit for converting digital color dif

Details Video signal processing circuit for converting digital color dif Video signal processing circuit for converting digital color dif

1995-05-30

1996-06-18

Kostak, Victor R.

Television

Format conversion

Specified chrominance processing

348458, H04N 1120

Patent

active

055283063

ABSTRACT:
A video signal processing circuit capable of converting digital color difference signals directly into a carrier chrominance signal is described. The processing circuit includes a first flip-flop for latching the first sampling clock signal of the first and second color difference signals with a second sampling clock signal having a frequency which is an integer multiple of a subcarrier frequency of the carrier chrominance signal to be produced, second and third flip-flops for respectively latching the first and second color difference signals with a third sampling clock signal obtained from the first flip-flop, and carrier chrominance signal generating circuit for generating the carrier chrominance signal from the first and second color difference signals outputted from the second and third flip-flops.

REFERENCES:
patent: 4335393 (1982-06-01), Pearson
patent: 5249038 (1993-09-01), Stec
patent: 5444495 (1995-08-01), Takahama et al.

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