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.
Patent No.:
Date of Patent:
Oct. 08, 2013
Filed:
Oct. 10, 2011
Thayl D. Zohner, Naperville, IL (US);
Douglas A. Chandler, Aurora, IL (US);
Jae-hu Kim, Naperville, IL (US);
Thayl D. Zohner, Naperville, IL (US);
Douglas A. Chandler, Aurora, IL (US);
Jae-Hu Kim, Naperville, IL (US);
Tellabs Operations, Inc., Naperville, IL (US);
Abstract
An embodiment of the invention discloses phase shifting a second clock signal by a phase increment with respect to a first clock signal, where the first clock signal and the second clock signal have the same periods. The first clock signal is sampled with the second clock signal, and the output of the sample indicates whether the sample of the first clock signal is at a logic one state or a logic zero state. A count of logic one samples is incremented if the sample of the first clock signal is at a logic one state. The process of phase shifting the second clock signal and sampling the first clock signal is repetitively performed to a maximum number of samples.