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:
May. 04, 2010
Filed:
Feb. 22, 2006
Applicant:
Maheen A. Samad, Mountain View, CA (US);
Inventor:
Maheen A. Samad, Mountain View, CA (US);
Assignee:
XILINX, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of sampling a frequency difference in an integrated circuit is disclosed. The method comprises the steps of receiving a clock signal in a first clock domain; comparing a count of the clock signal in the first clock domain to a predetermined value N; converting the result of the comparison to a second clock domain; and generating an error signal representing the difference between the count of the first clock signal and the count of a second clock signal in the second clock domain. A circuit for sampling a frequency difference in an integrated circuit is also disclosed.