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. 08, 2004
Filed:
Feb. 14, 2002
Takashi Miida, Kanagawa, JP;
Innotech Corporation, , JP;
Abstract
A solid-state imaging device is provided, which is capable of increasing an S/N ratio while enhancing a dynamic range, when a photoelectric signal is converted into a digital signal. This solid-state imaging device comprises: a plurality of photoelectric conversion devices arrayed in rows and columns, each of the photoelectric conversion devices converting an optical signal into an electric signal and outputting a first signal voltage; a difference signal generation circuit provided for each column, for sequentially inputting the first signal voltage and a second signal voltage obtained by initializing the photoelectric conversion devices, thereafter converting the first signal voltage and the second signal voltage into charges, generating a difference signal therebetween, and then outputting the difference signal after adjusting a gain according to a level of the difference signal; and an analog/digital conversion circuit connected to the output of the difference signal generation circuit.