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. 19, 2016

Filed:

Dec. 12, 2013
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Thomas Gentner, Boeblingen, DE;

Klaus P. Gungl, Sindelfingen, DE;

Guenther Hutzl, Sindelfingen, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01); H03K 5/156 (2006.01);
U.S. Cl.
CPC ...
H03K 3/017 (2013.01); H03K 5/1565 (2013.01);
Abstract

A system is disclosed, which may include a clock distribution circuit. The clock distribution circuit may include a duty cycle controller to distribute a clock output signal to a plurality of remote locations on a clock grid. The duty cycle controller may adjust, in response to a duty cycle control signal, a duty cycle of the clock output signal. The clock distribution circuit may also include a duty cycle measurement unit, to measure the duty cycle of the clock output signal at one of the remote locations, generate the duty cycle control signal, and generate and write duty cycle data values to a memory unit. The system may also include control logic to calculate and transmit a clock distribution circuit end-of-life date, by applying a model to stored duty cycle data values and to a duty cycle controller adjustment state.


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