Endoscope apparatus for obtaining properly dimmed...

Television – Special applications – With endoscope

Reexamination Certificate

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Details

C348S069000

Reexamination Certificate

active

07573499

ABSTRACT:
A CCD driver circuit adjusts and supplies pulse-type signals to a CCD in order to adjust the sensitivity of the CCD. A metering circuit meters a signal output from the CCD. A sensitivity control circuit controls the sensitivity of the CCD by controlling the sensitivity multiplication factor of the CCD based on a metering result by the metering circuit. A metering correcting circuit corrects a metering result from the metering circuit based on a charge multiplication factor from the sensitivity control circuit. An aperture control circuit controls an aperture based on a metering signal corrected by the metering correcting circuit. Thus, an image of an object of which strength of light largely varies can be obtained as an image under a proper dimming state.

REFERENCES:
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patent: 4967269 (1990-10-01), Sasagawa et al.
patent: 5337340 (1994-08-01), Hynecek
patent: 6080104 (2000-06-01), Ozawa et al.
patent: 6689050 (2004-02-01), Beutter et al.
patent: 7037259 (2006-05-01), Hakamata et al.
patent: 7102680 (2006-09-01), Mori et al.
patent: 7209162 (2007-04-01), Ota et al.
patent: 7312823 (2007-12-01), Mori
patent: 1 099 405 (2001-05-01), None
patent: 1 294 186 (2003-03-01), None
patent: 2001-29313 (2001-02-01), None
patent: 2003-079570 (2003-03-01), None

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