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. 22, 2010
Filed:
Jun. 01, 2005
Applicant:
Shoujun Wang, Kanata, CA;
Inventor:
Shoujun Wang, Kanata, CA;
Assignee:
Altera Corporation, San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G01R 31/28 (2006.01); G08C 25/00 (2006.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A built-in, at-speed BERT is provided that may be part of high-speed serial interface circuitry implemented on an integrated circuit. The built-in, at-speed BERT takes advantage of an existing clock data recovery (CDR) dual-loop architecture and built-in self test (BIST) circuitry. The built-in, at-speed BERT provides a low-cost solution for production testing of high-speed serial links, facilitating jitter analysis and evaluation of pre-emphasis and equalization performance. This further allows adaptation of pre-emphasis and equalization.