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:
Mar. 21, 2017
Filed:
Feb. 19, 2016
Applicant:
Lapis Semiconductor Co., Ltd., Yokohama, JP;
Inventor:
Yukinobu Watanabe, Yokohama, JP;
Assignee:
LAPIS SEMICONDUCTOR CO., LTD., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H03M 1/1295 (2013.01);
Abstract
An A/D conversion device includes: a level shifter circuit configured to level-shift an analog voltage of an input voltage signal to generate a conversion signal; an A/D converter configured to A/D-convert a voltage of the conversion signal supplied from the level shifter circuit. The level shifter circuit subtracts an instantaneous voltage value of the input voltage signal from a reference voltage so as to output a signal value as the conversion signal.