Electronic type endoscope apparatus for use in NTSC/PAL systems

Details Electronic type endoscope apparatus for use in NTSC/PAL systems Electronic type endoscope apparatus for use in NTSC/PAL systems

1988-07-26

1989-10-31

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 42, 128 6, H04N 718, G61B 14

Patent

active

048781126

ABSTRACT:
A rotary color filter, used in a PAL or NTSC system, is rotated with a period which is equal to one frame period of a video signal. The rotary color filter has a plurality of color transmitting filters which are disposed in the circumferential direction at different intervals. Consequently the time during which an illumination light is emitted to obtain one complete color frame is made shorter, thereby diminishing the possibility of a color change occurring.

REFERENCES:
patent: 4628350 (1986-12-01), Aughton et al.
patent: 4800424 (1989-01-01), Noguchi

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