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. 18, 2018
Filed:
Dec. 22, 2015
Katsuhiko Aisu, Hyogo, JP;
Hirofumi Watanabe, Hyogo, JP;
Takaaki Negoro, Osaka, JP;
Yoshinori Ueda, Hyogo, JP;
Yasukazu Nakatani, Hyogo, JP;
Kazuhiro Yoneda, Osaka, JP;
Katsuyuki Sakurano, Hyogo, JP;
Katsuhiko Aisu, Hyogo, JP;
Hirofumi Watanabe, Hyogo, JP;
Takaaki Negoro, Osaka, JP;
Yoshinori Ueda, Hyogo, JP;
Yasukazu Nakatani, Hyogo, JP;
Kazuhiro Yoneda, Osaka, JP;
Katsuyuki Sakurano, Hyogo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A photoelectric conversion device includes a pixel cell including a phototransistor, a reference cell including a reference transistor having a temperature characteristic identical to that of the phototransistor and having a fixed electrical state, an analog-to-digital converter that converts an analog output of the pixel cell into a digital output, a correction amount computation unit that computes a correction amount for the digital output of the analog-to-digital converter based on an output of the reference cell and a reference value, and a correction unit that corrects the digital output of the analog-to-digital converter based on the correction amount.