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:
Jun. 20, 2017
Filed:
Oct. 21, 2016
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Yasunari Harada, Ebina, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A successive comparison A/D conversion circuit includes: an comparison circuit including a differential amplification circuit which includes a pair of differential input terminals, amplifies a pair of first differential signals input into the pair of differential input terminals, and outputs a pair of second differential signals, and a latch circuit which compares voltages of the second differential signals output from the differential amplification circuit, retains an comparison result, and outputs the retained comparison result; a digital circuit which generates a digital signal corresponding to the first differential signal, based on the comparison result; an arithmetic circuit which generates a reference signal based on the digital signal, generates the first differential signal by subtracting the reference signal from a third differential signal or adding the reference signal to the third differential signal, and outputs the generated first differential signal to the pair of differential input terminals; and a control circuit.