Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-05-26
1989-09-19
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
128 6, 35821316, A61B 104, A61B 106
Patent
active
048686450
ABSTRACT:
A video converter can be mounted on an optical endoscope which has an image guide capable of transmitting an optical image formed by an objective optical system. The video converter incorporates a solid-state imaging device having a plurality of pixels. The levels of the outputs from the pixels of the solid-state imaging device are compared with a dark current level, and the size of the imaging area of the image guide is detected from the result of the comparison. A photo-sensing/imaging area scaling signal is selected or generated in accordance with the result of detection if the imaging area of the image guide, and the intensity of the illuminating light is controlled in accordance with the actual imaging area which is determined by incorporating the photo-sensing/imaging area scaling signal.
REFERENCES:
patent: 4535758 (1985-08-01), Longacre
patent: 4593313 (1986-06-01), Nagasaki
patent: 4628362 (1986-12-01), Waehner
Britton Howard W.
Olympus Optical Co,. Ltd.
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