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:
Sep. 20, 1988
Filed:
Apr. 09, 1987
Applicant:
Inventors:
Katsumi Nakagawa, Kawasaki, JP;
Hideo Kanno, Kawasaki, JP;
Yasuo Kuroda, Sagamihara, JP;
Katsunori Hatanaka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
358280 ; 358294 ; 250578 ;
Abstract
A photoelectric conversion apparatus includes light reception elements which are rendered enabled under application of voltage; a first memory section for storing outputs from the light reception elements in the enabled state; a second memory section for storing outputs from the light reception elements in a disabled state; and an arithmetic operation circuit for correcting the contents of the first memory section in accordance with the contents of the second memory section.