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. 28, 2016
Applicant:
Aucmos Technologies Usa, Inc., Santa Clara, CA (US);
Inventor:
Teh-Shang Lu, Sunnyvale, CA (US);
Assignee:
CORE CHIP TECHNOLOGY (NANJING) CO., LTD., Nanjing, Jiangsu Province, CN;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); H03G 3/30 (2006.01); H03K 5/08 (2006.01); G01D 5/24 (2006.01); G01R 1/00 (2006.01); G08B 1/00 (2006.01);
U.S. Cl.
CPC ...
H03G 3/30 (2013.01); G01D 5/24 (2013.01); H03K 5/082 (2013.01); G01R 1/00 (2013.01); G06Q 2220/00 (2013.01); G08B 1/00 (2013.01);
Abstract
A proximity detector circuit that receives a single-ended sensor signal includes (a) an adaptive level control circuit maintaining the single-ended sensor signal within a predetermined voltage range relative a common mode reference signal; and (b) a programmable gain amplifier receiving the single-ended sensor signal and the common mode reference signal as a differential input signal, and providing an output signal derived from amplifying the differential input signal.