1980-03-17
1981-11-03
Gellner, Michael L.
354 60R, 354 62, 354131, 354173, 354266, 354289, G03B 7083, A61B 104, G03B 1503, G03B 1718
Patent
active
042982600
ABSTRACT:
An apparatus for endoscopic photography includes a camera and a light source unit which may be coupled to an endoscope to permit a picture to be taken of the interior of a coeliac cavity. An operating signal is converted into a high frequency signal by means of a conversion circuit which is disposed in one of the camera and the light source unit while a recovery circuit for recovering the operating signal from the high frequency signal is disposed in the other of the camera and the light source unit. In this manner, a communication of the operating signal between the camera and the light source unit is enabled through d.c. feed lines disposed within the endoscope which are utilized to feed a film winding d.c. motor.
REFERENCES:
patent: 4192597 (1980-03-01), Ting
Gellner Michael L.
Olympus Optical Company Ltd.
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