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:
Dec. 15, 2009
Filed:
Apr. 04, 2007
Applicants:
Tim Tri Hoang, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Wanli Chang, Saratoga, CA (US);
Inventors:
Tim Tri Hoang, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Wanli Chang, Saratoga, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase frequency detector compares a reference clock signal to a feedback clock signal to generate pulses in one or more output signals. The one or more output signals have a minimum pulse width. The phase frequency detector has a temperature sensing circuit. The phase frequency detector adjusts the minimum pulse width of the one or more output signals using the temperature sensing circuit to compensate for variations in the temperature of the phase frequency detector.