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:
Jul. 27, 2021
Filed:
May. 21, 2018
Applicant:
Semtech Corporation, Camarillo, CA (US);
Inventors:
Chaouki Rouaissia, Neuchâtel, CH;
Sébastien Grisot, Boudry, CH;
Assignee:
Semtech Corporation, Camarillo, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/955 (2006.01); G06F 3/041 (2006.01); H03K 17/96 (2006.01); G01B 7/02 (2006.01); G06F 3/044 (2006.01);
U.S. Cl.
CPC ...
H03K 17/955 (2013.01); G01B 7/023 (2013.01); G06F 3/04186 (2019.05); H03K 17/962 (2013.01); G06F 3/044 (2013.01); G06F 2203/04107 (2013.01); G06F 2203/04108 (2013.01); H03K 2217/960705 (2013.01); H03K 2217/960765 (2013.01);
Abstract
A proximity sensor, and a portable device equipped therewith, with at least two superposed sense electrodes, one partially screening the other. By reading the capacity first of one electrode, then of the other, while setting the potential of the counter-electrode either to ground or to guard, the sensor of the invention discriminates between a body part, or another electrically equivalent object, and water drops at closer distance.