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:
Apr. 14, 2009

Filed:

Oct. 20, 2005
Applicants:

Sheng Wu, Elmsford, NY (US);

Noah Gottfried, Johnsonburg, NJ (US);

James Burnell, Warwick, NY (US);

Corey M. Dayton, Newburgh, NY (US);

Inventors:

Sheng Wu, Elmsford, NY (US);

Noah Gottfried, Johnsonburg, NJ (US);

James Burnell, Warwick, NY (US);

Corey M. Dayton, Newburgh, NY (US);

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/00 (2006.01); H05K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

EMI emissions generated by clock signals in a multi-slot electronic system are reduced by providing out-of-phase clock signals to alternate slots, which cause EMI emissions at typical testing distances and farther to be reduced. An electronic equipment comprises a plurality of slots, each slot operable to receive a clock signal and a plurality of phases of the clock signal, wherein a first phase of the clock signal is routed to a portion of the slots and a second phase of the clock signal is routed to a different portion of the slots. The second phase of the clock signal may be substantially 180° out-of-phase with the first phase of the clock signal.


Find Patent Forward Citations

Loading…