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:
Nov. 06, 2007
Filed:
Aug. 09, 2005
Applicants:
Seungmyon Park, Sunnyville, CA (US);
Ramanand Venkata, San Jose, CA (US);
Chong Lee, San Ramon, CA (US);
Inventors:
Seungmyon Park, Sunnyville, CA (US);
Ramanand Venkata, San Jose, CA (US);
Chong Lee, San Ramon, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 23/02 (2006.01); H03D 3/00 (2006.01); H03K 9/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device such as a programmable logic device ('PLD') includes circuitry for detecting the PPM frequency difference between two input clock signals. For example, this circuitry may accept a user-programmable PPM threshold value and output a signal when this threshold value is met.