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:
Feb. 02, 2016
Filed:
Sep. 11, 2014
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
John W. Stanton, Boxborough, MA (US);
Pradeep Thiagarajan, Chapel Hill, NC (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 25/00 (2006.01); H03L 7/095 (2006.01);
U.S. Cl.
CPC ...
H03L 7/095 (2013.01);
Abstract
A device includes a lock detect circuit that is structured and arranged to: convert a reference clock to a reference triangle wave; convert a feedback clock to a feedback triangle wave; determine whether the feedback triangle wave is within a tolerance margin that is defined relative to the reference triangle wave; and generate a determiner output that is a first value when the feedback triangle wave is not within the tolerance margin, and a second value when the feedback triangle wave is within the tolerance margin.