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. 21, 2012
Filed:
Nov. 16, 2004
Applicant:
Ajay Dalvi, San Jose, CA (US);
Inventor:
Ajay Dalvi, San Jose, CA (US);
Assignee:
Xilinx, Inc., San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H04L 25/00 (2006.01); H04L 25/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
Phase shift is added between a uttering clock signal and a data bit stream clocked by the clock signal. The phase shift is adjusted until half the data bits are captured (counted) over a measurement period. Adding this amount of phase shift between the clock and data signals centers the average clock edge placement. In a particular embodiment, counters, each having N bits where N is an integer, are used to count clock pulses and data bits. When one counter is full and the most-significant bit on the other counter goes high, the phase shift between the data and clock signal places the average clock edge at the data bit edge.