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.

Date of Patent:
Nov. 23, 2010

Filed:

Nov. 07, 2008
Applicant:

Lip Kai Soh, Sitiawan, MY;

Inventor:

Lip Kai Soh, Sitiawan, MY;

Assignee:

Altera Corporation, San Jose, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 25/00 (2006.01); H03D 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A phase detector includes transistors that generate first and second phase error signals. The phase detector resets the first phase error signal in response to at least one of the first and the second phase error signals through a first reset path having a maximum reset delay that is equal to or less than a sum of switching delays of three transistors in the first reset path. The phase detector resets the second phase error signal in response to at least one of the first and the second phase error signals through a second reset path having a maximum reset delay that is equal to or less than a sum of switching delays of three transistors in the second reset path.


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