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Image pickup apparatus for an electronic endoscope

  • US 4,868,646 A
  • Filed: 03/21/1988
  • Issued: 09/19/1989
  • Est. Priority Date: 04/03/1987
  • Status: Expired due to Term
First Claim
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1. An electronic endosope, comprising:

  • (A) an operating portion, said operating portion having connections adapted to receive drive signals from an external drive circuit which can be removably coupled to said operating portion;

    (B) a flexible insertable portion having a proximal and a distal end, said proximal end being coupled to said operating portion; and

    (C) an image pickup unit located in said distal end of said flexible insertable portion, said image pickup unit including;

    (1) a solid-state image sensor; and

    (2) a drive voltage adjustment circuit located adjacent said solid-state sensor and electrically coupled to said operating portion, said drive voltage adjustment circuit receiving one or more drive signals applied to said operating portion, adjusting the level of one or more of said drive signals, and applying the so adjusted drive signals to said solid-state image sensor.

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