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:
Feb. 19, 2013
Filed:
Oct. 18, 2011
Ferdinando Pace, Birmensdorf, CH;
Ferdinando Pace, Birmensdorf, CH;
ST-Ericsson SA, Plan-les-Ouates, CH;
Abstract
A programmable high-speed frequency divider architecture is provided to provide a substantially 50% duty cycle signal output regardless of whether the division ratio is odd or even. The programmable frequency divider circuit receives an input clock signal having a first period and outputs and output clock signal that has a second clock signal period that is a programmable multiple, A, of the first period. The frequency divider includes a shift register that receives the input clock signal and produces a first output signal. The frequency divider also includes a duty cycle compensation circuit that accepts the first output signal and produces an output clock signal that has a duty cycle that is substantially 50%.