Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1987-05-29
1988-12-13
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
128 6, 358 42, 358 44, A61B 104, A61B 106, H04N 718, H04N 907
Patent
active
047914793
ABSTRACT:
An electronic endoscope comprising an endoscope unit and a light source unit. The endoscope includes a light guide and a CCD for imaging the object. The light source unit includes a continuously lighting lamp (e.g., xenon lamp), for use as a light source for observation, and a flashing stroboscope as a light source for still-picture recording. An illumination light from the lamp or the stroboscope is applied alternatively to a light guide. A rotary filter is located in front of the light guide. Every time it makes one revolution, the filter colors the illumination light red, green, and blue, in succession, with shielding periods between coloring periods. The CCD is stored with signal charge corresponding to image information during a coloring period, and outputs an output signal during a shielding period thereafter. The output of the CCD is supplied to the light source unit, and is transmitted through a multiplexer to be stored in any of frame memories. The multiplexer is switched with every imaging of one color-component image by the CCD, and image signals for red, green, and blue color components are stored individually in the frame memories. Output signals for the three color components are read out simultaneously from the frame memories, and are supplied to a CRT color monitor 64 and an image filing unit. In a still-picture recording mode, the stroboscope is flashed in the following manner while the rotary filter makes one revolution. Emission of a first flashlight ends at the end of a coloring period for a first color, and a second flashlight is emitted in the middle of a coloring period for a second color. Emission of a third flashlight is started at the start of a coloring period for a third color. Thereafter, the storage into the frame memories is stopped.
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Noguchi Toshiaki
Ogiu Hisao
Britton Howard W.
Olympus Optical Co,. Ltd.
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