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. 16, 2014
Filed:
Dec. 26, 2013
Applicant:
Maxim Integrated Products, Inc., San Jose, CA (US);
Inventor:
Douglas S. Smith, Milpitas, CA (US);
Assignee:
Maxim Integrated Products, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03K 19/003 (2006.01); H03M 1/12 (2006.01); G06F 11/34 (2006.01); G02F 7/00 (2006.01); H03K 19/177 (2006.01); G05B 23/02 (2006.01); G06Q 10/06 (2012.01);
U.S. Cl.
CPC ...
H03M 1/12 (2013.01); G06F 11/3419 (2013.01); G02F 7/00 (2013.01); H03K 19/1776 (2013.01); H03K 19/17728 (2013.01); G05B 23/02 (2013.01); H03K 19/00384 (2013.01); G06Q 10/06 (2013.01); H03K 19/17736 (2013.01);
Abstract
A digital input includes a galvanically isolated section having an integrating capacitor coupled to a high voltage signal input by at least one current-limiting resistor, a relaxation oscillator coupled across the integrating capacitor, and an electronic switch controlled by the relaxation oscillator. An optical isolator has an input side and an output side, wherein the input side is coupled across the integrating capacitor by the switch, and a low voltage section includes a decoder having an input coupled to the output side of the optical isolator and having a low voltage signal output.