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:
Mar. 17, 1998
Filed:
Aug. 19, 1996
Applicant:
Inventor:
Michihiro Morimoto, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
348241 ; 348314 ;
Abstract
In a solid state image pick-up device having a vertical overflow drain structure, a voltage to be applied to a semiconductor substrate is lowered in stepwise manner during a period, in which a charge photoelectrically converted by a photodiode is accumulated in the photodiode. Expansion of a dynamic range relative to an incident light intensity can be realized without performing high speed transfer in a vertical CCD register. Then, lowering power consumption and lowering of noise of the solid state image pick-up device becomes possible.