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:
Aug. 11, 2020
Filed:
Aug. 23, 2017
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventor:
Keith A. Jenkins, Sleepy Hollow, NY (US);
Assignee:
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 29/02 (2006.01); H03K 5/13 (2014.01); G01R 29/027 (2006.01); H03K 5/133 (2014.01); H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
G01R 29/023 (2013.01); G01R 29/0273 (2013.01); H03K 5/13 (2013.01); H03K 5/133 (2013.01); H03K 2005/00019 (2013.01);
Abstract
Methods and systems for measuring a duty cycle of a signal include applying a first branch of an input signal directly to a latch. A delay of a second branch of the input signal is incrementally increased, with the second branch being applied to the latch, until the latch changes its output. A delay, corresponding to the latch's changed output, is divided by a period of the input signal to determine a duty cycle of the input signal.