Camera system for color television

Details Camera system for color television Camera system for color television

1981-11-09

1984-05-22

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 962

Patent

active

044504730

ABSTRACT:
A camera system for color television comprising a color television camera, a control unit and a signal processing circuit. As hue signal the signal processing circuit produces a composite color difference signal p(R-Y)+q(B-Y), wherein p and q are combination factors, R and B are color signals and Y is a luminance signal. In addition to the fact that this hue signal can be employed in known manner for chroma keying signal generation it is employed in accordance with the invention to check the registration on display. Herein, there is a choice between three fixed combinations of the combination factors p and q, the signal processing circuit producing a difference signal R-G, R-B and B-G, respectively. For the standardized luminance signal Y=0.59G+0.30 R+0.11 B it follows that: p=8q, p=-q and 7p=3q, respectively.

REFERENCES:
patent: Re28021 (1974-05-01), Boxman et al.
patent: 4163249 (1979-07-01), Michael et al.

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