Electronic-type endoscope system having capability of setting AG

Details Electronic-type endoscope system having capability of setting AG Electronic-type endoscope system having capability of setting AG

1988-12-28

1990-08-21

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

128 6, 358168, A61B 104, A61B 106, H04N 520

Patent

active

049511351

ABSTRACT:
An endoscope system has a signal processing circuit for converting an image signal output of a solid state imaging device into a standard image signal, a monitor for providing a display of the standard image signal, an automatic gain control circuit for outputting an image signal whose level is automatically adjusted in accordance with the level of the image signal; and a gain variation region setting circuit for outputting a control signal to set the gain variation region of the automatic gain control circuit. With this arrangement, it is possible to properly set the AGC variation region of the AGC of the signal processing apparatus in accordance with such factors as the number of pixels of the solid state imaging device which constitutes a part of an electronic endoscope connected.

REFERENCES:
patent: 4532918 (1985-08-01), Wheeler
patent: 4535758 (1985-08-01), Longacre, Jr.
patent: 4628362 (1986-12-01), Waehner
patent: 4631582 (1986-12-01), Nagasaki et al.
patent: 4821116 (1989-04-01), Nagasaki et al.
patent: 4839723 (1989-06-01), Yoshinaga et al.
patent: 4853773 (1989-08-01), Hibino et al.
patent: 4855819 (1989-08-01), Hibino et al.
patent: 4860094 (1989-08-01), Hibino et al.

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