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:
Dec. 12, 2023
Filed:
Mar. 02, 2021
Olympus Corporation, Hachioji, JP;
Yoshio Hagihara, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
An AD conversion device includes a comparison circuit, an upper-level DA conversion circuit, a level shift circuit, a lower-level DA conversion circuit, and a correction device. The comparison circuit includes a first terminal and a second terminal. The comparison circuit is configured to compare a first voltage level of a signal input to the first terminal with a second voltage level of a signal input to the second terminal. The upper-level DA conversion circuit includes a plurality of capacitance elements electrically connected to the second terminal. Capacitive values of the plurality of capacitance elements are weighted by binary numbers. The level shift circuit includes one or more capacitance elements electrically connected to the second terminal. The lower-level DA conversion circuit includes a plurality of capacitance elements electrically connected to the second terminal.