Video endoscope apparatus employing device shutter

Details Video endoscope apparatus employing device shutter Video endoscope apparatus employing device shutter

1988-08-30

1989-11-28

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

35821324, 35821326, 35821327, 128 6, A61B 504, A61B 106

Patent

active

048841340

ABSTRACT:
An endoscope apparatus has a storage-time switching circuit for shortening the charge storage time of a solid state imaging device provided with a photoelectric conversion function, and the quantity of illuminating light to be projected an object is increased in association with the operation of this switching circuit. In this transient process of increasing the quantity of illuminating light, the level of video signals obtained by imaging is compared with a proper reference level. If the level of the video signals reaches the reference level, the video signals are stored in a storage circuit. Accordingly, it is possible to obtain a frozen picture which is scarcely blurred.

REFERENCES:
patent: 4631593 (1986-12-01), Kinoshita
patent: 4704633 (1987-11-01), Matsumoto
patent: 4746975 (1988-05-01), Ogiu

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