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:
May. 08, 1990
Filed:
Sep. 21, 1988
Applicant:
Inventors:
Jiro Arima, Osaka, JP;
Yoshihiro Okui, Osaka, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502 / ; 2502 / ;
Abstract
A photo-electric converter according to the present invention has a switching element connected between a photosensitive element and a photo-electric converting circuit and another switching element connected in parallel with the photosensitive element, and an output from the photo-electric converting circuit obtained by turning on and off the switching element is analogue-to-digital converted and arithmetically processed. Thereby an offset voltage in the photo-electric converter circuit can be corrected and an accurate output can be obtained by the photo-electric conversion.