Color video camera apparatus providing correction of light inten

Details Color video camera apparatus providing correction of light inten Color video camera apparatus providing correction of light inten

1987-07-13

1989-03-07

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 44, H04N 9083, H04N 907

Patent

active

048110884

ABSTRACT:
A single tube color video camera apparatus having a camera tube including a color separation stripe filter and producing an output signal containing a color multiplex carrier signal, utilizes an envelope detector for directly detecting the camera tube output signal to produce an envelope detection signal which varies in accordance with an electrical charge pattern of the tube target. Phase control of the color multiplex carrier signal extracted from the camera tube output signal is executed based upon the envelope detection signal, to thereby correct for color signal phase deviations caused by variations in light intensity of scenes viewed by the camera.

REFERENCES:
patent: 4620221 (1986-10-01), Takanashi et al.
patent: 4630107 (1986-12-01), Takanashi et al.
patent: 4652910 (1987-03-01), Nakagaki et al.
patent: 4691227 (1987-09-01), Takanashi et al.
patent: 4736242 (1988-04-01), Takanashi et al.
patent: 4736243 (1988-04-01), Takanashi et al.

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