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:
Jul. 22, 2008

Filed:

Aug. 31, 2005
Applicant:

Alessandro Minzoni, Morrisville, NC (US);

Inventor:

Alessandro Minzoni, Morrisville, NC (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/017 (2006.01);
U.S. Cl.
CPC ...
Abstract

A duty cycle detector including a first circuit, a second circuit, and a third circuit. The first circuit is configured to receive a clock signal having a first duty cycle and to provide a first oscillating signal having a first period proportional to the first duty cycle. The second circuit is configured to receive an inverted clock signal that is the inverse of the clock signal and having a second duty cycle and to provide a second oscillating signal having a second period proportional to the second duty cycle. The third circuit is configured to provide first output signals that indicate the first duty cycle of the clock signal based on a first phase difference between the first oscillating signal and the second oscillating signal.


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