Color-difference line-sequence signal processing apparatus

Details Color-difference line-sequence signal processing apparatus Color-difference line-sequence signal processing apparatus

1986-08-07

1988-08-23

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 75, 358909, H04N 146, H04N 971

Patent

active

047664851

ABSTRACT:
Apparatus is disclosed for processing an incoming video signal having line sequential R-Y and B-Y color difference signals at respective different DC offsets. The apparatus includes first and second memory circuits for receiving the incoming signal and for respective storage of the offsets of the R-Y and B-Y color difference signals. A computing circuit is operative selectively to subtract the contents of the first and second memory circuits from the incoming signal line sequence parts to provide offset-free versions thereof.

REFERENCES:
patent: 4056826 (1977-11-01), Watanabe et al.
patent: 4369466 (1983-01-01), Matsuzaki et al.
patent: 4403254 (1983-09-01), Okada et al.
patent: 4651213 (1987-03-01), Takimoto

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