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:
Jun. 10, 2003
Filed:
Jun. 19, 2002
Yoshinori Muramatsu, Tokyo, JP;
Susumu Kurosawa, Tokyo, JP;
Hiroaki Ohkubo, Tokyo, JP;
Tsuyoshi Nagata, Tokyo, JP;
Yasutaka Nakashiba, Tokyo, JP;
NEC Electronics Corporation, Kanagawa, JP;
Abstract
The image sensor of the present invention performs two exposures of differing exposure times, holds the signal charge that is generated in photodiode in the first exposure period in pixel interior capacitance that is provided inside pixels and integrates the signal charge that is generated in photodiode in the second exposure period with the first signal charge inside the pixels and executes readout, whereby the white (overexposed) portions that occur in the first exposure period are compensated by information of the second exposure period, and black (underexposed) portions that occur in the second exposure period are compensated by information of the first exposure period, and an image is obtained having wide dynamic range with respect to the amount of light in which underexposure and overexposure are mitigated.