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:
May. 24, 2016

Filed:

Apr. 18, 2014
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventors:

William W. Walker, Los Gatos, CA (US);

Pradip Thachile, San Jose, CA (US);

Nikola Nedovic, San Jose, CA (US);

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01); G06F 1/10 (2006.01); H04L 7/033 (2006.01); H04B 1/40 (2015.01); H03L 7/089 (2006.01); H03L 7/093 (2006.01); H03L 7/099 (2006.01); H03L 7/22 (2006.01);
U.S. Cl.
CPC ...
G06F 1/10 (2013.01); H03L 7/0898 (2013.01); H03L 7/093 (2013.01); H03L 7/099 (2013.01); H03L 7/22 (2013.01); H04B 1/40 (2013.01); H04L 7/0331 (2013.01); H03L 2207/06 (2013.01);
Abstract

A clock multiplication and distribution system includes a first phase-lock-loop circuit, a second phase-lock-loop circuit, and a clock distribution network that electrically couples the first phase-lock-loop circuit and the second phase-lock-loop circuit. The first phase-lock-loop circuit may include a first feedback loop that includes a first integer divider circuit and may be configured to generate a first clock using a reference clock. A frequency of the first clock may be greater than a frequency of the reference clock. The second phase-lock-loop circuit may include a second feedback loop that includes a second integer divider circuit and may be configured to generate a second clock using the first clock. A frequency of the second clock may be greater than the frequency of the first clock.


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