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. 28, 2006

Filed:

Apr. 22, 2003
Applicants:

Brian T. Brunn, Austin, TX (US);

Ahmed Younis, Austin, TX (US);

Inventors:

Brian T. Brunn, Austin, TX (US);

Ahmed Younis, Austin, TX (US);

Assignee:

XILINX, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract

A multiplying phase detector includes a 1multiplier, a 2multiplier and a phase error generation module. The 1multiplier is operably coupled to multiple an incoming data stream, which is a random data pattern, with a 1clock, which is in-phase with the incoming stream of data and is one-half the rate of the incoming stream of data, to produce a 1product. In this instance, the 1product represents missing transitions in the incoming stream of data. The 2multiplier is operably coupled to multiply the 1product with the incoming data stream to produce a modified stream of data. The phase error generation module is operably coupled to generate a phase error based on the modified stream of data and a 2clock, where the phase error represents a phase offset between the modified stream of data and the 2clock.


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