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. 23, 1991
Filed:
Mar. 13, 1989
Kiyoshi Tsuji, Tanashi, JP;
Kenji Kimura, Tachikawa, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
The solid state imaging apparatus having a black level correcting circuit of this invention has an imaging device provided with a solid state imaging device and a signal processing device connected to this imaging device, processing the picture image signal obtained by the solid state imaging device and outputting a video signal. The signal processing device is provided with a gain controlling amplifier receiving the photoelectrically converted output of the solid state imaging device and variably gain-controlling it and a direct current-clamping circuit direct current-clamping the optical black part included in the output signal of the solid state imaging device and stabilizing the black level of the video signal.