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. 16, 2015
Filed:
Jul. 30, 2013
Applicant:
Taiwan Semiconductor Manufacturing Company Ltd., Hsinchu, TW;
Inventors:
Nan-Hsin Tseng, Hsinchu County, TW;
Ramakrishnan Krishnan, Hsinchu, TW;
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD., Hsinchu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 21/02 (2006.01); H03K 3/013 (2006.01);
U.S. Cl.
CPC ...
H03K 3/013 (2013.01);
Abstract
A circuit for pulse width measurement comprises a charging circuit, a comparator and a determining circuit. The charging circuit is configured to charge a capacitive device in response to a periodic signal. The comparator is configured to compare a voltage across the capacitor with a reference voltage level. The determining circuit is configured to determine the number of pulses of the periodic signal in response to a signal from the comparator indicating that the voltage across the capacitor reaches the reference voltage level.