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:
Apr. 04, 2006
Filed:
Nov. 18, 2000
Kunihiro Watanabe, Kyoto, JP;
Takeshi Yamamoto, Kyoto, JP;
Kunihiro Watanabe, Kyoto, JP;
Takeshi Yamamoto, Kyoto, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
In a solid state imaging apparatus of the present invention, first and second charge-coupled devices (CCDs)A andB are prepared as two charge accumulation circuits for one photodiode. The first and second CCDsA andB additionally accumulate charges during an on-state and an off-state of a light emitting source in the imaging apparatus, respectively. After the additional charge accumulation, the additionally accumulated charges in the first and second CCDsA andB are fed to first and second charge transfer CCD registersA andB, respectively. The charges in the first and second charge transfer CCD registersA andB are shifted in sequence to thereby output first and second charge signals, respectively. A differential amplifierof the imaging apparatus calculates and outputs a differential signal between the first charge signal and the charge second signal. By using the imaging apparatus of the present invention, the effect, e.g., backlight and/or over exposure effect, due to background light inputted to the photodiodewith almost equal intensity during the on-state and the off-state thereof is removed to thereby obtain a clear image of a target subject formed corresponding to the radiation light from the light emitting source.