The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Jun. 22, 2004
Nobuyuki Doguchi, Hino, JP;
Yoshinori Takahashi, Hachioji, JP;
Fumiyuki Okawa, Hino, JP;
Katsuichi Imaizumi, Hachioji, JP;
Takeshi Ozawa, Sagamihara, JP;
Isami Hirao, Hachioji, JP;
Sakae Takehana, Sagamihara, JP;
Nobuyuki Doguchi, Hino, JP;
Yoshinori Takahashi, Hachioji, JP;
Fumiyuki Okawa, Hino, JP;
Katsuichi Imaizumi, Hachioji, JP;
Takeshi Ozawa, Sagamihara, JP;
Isami Hirao, Hachioji, JP;
Sakae Takehana, Sagamihara, JP;
Olympus Corporation, Tokyo, JP;
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.