Endoscope signal level control

Details Endoscope signal level control Endoscope signal level control

1983-10-07

1985-08-06

Grieb, William H.

Surgery

Truss

Perineal

358 98, 358168, A61B 104

Patent

active

045329184

ABSTRACT:
Apparatus for controlling the video signal level of a color endoscope to prevent the picture from blooming as the viewing head of the instrument is moved toward and away from a confined target. Circuit means are provided for automatically controlling both the amplified gain of the signal and the intensity of the illumination used to light the target during a series of color imaging sequences so that the color balance of the system is not disturbed.

REFERENCES:
patent: Re31289 (1983-06-01), Moore et al.
patent: Re31290 (1983-06-01), Moore et al.
patent: 3009989 (1961-11-01), Ahrons et al.
patent: 3879637 (1975-04-01), Woodworth
patent: 3970777 (1976-07-01), Bradford et al.
patent: 4074306 (1978-02-01), Kakinuma et al.
patent: 4423436 (1983-12-01), Kimura
patent: 4475539 (1984-10-01), Konomura

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