Electronic endoscope apparatus outputting ternary drive signal

Details Electronic endoscope apparatus outputting ternary drive signal Electronic endoscope apparatus outputting ternary drive signal

1990-01-31

1992-05-12

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 42, 35821326, 35821327, 128 6, H04N 718, A61B 14

Patent

active

051132540

ABSTRACT:
An endoscope apparatus is disclosed in which the horizontal transfer of the charge of a solid imaging device such as a CCD and the resetting for the detection of the charge are conducted by a common drive signal. The signal transmitted from the solid imaging device is caused to contain a feed-through period by making the drive signal to be served by a multi-valued level horizontal transfer signal exceeding a trinary value. Therefore, reset noise or the like can be eliminated by processing the output signal by using a correlated double sampling circuit or the like so that a video signal exhibiting a good S/N ratio can be obtained.

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patent: 4891695 (1990-01-01), Uchikubo et al.
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