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:
Sep. 29, 2015
Filed:
Jul. 08, 2014
Nokia Solutions and Networks Oy, Espoo, FI;
Dale Ray, Fort Worth, TX (US);
William Walsh, Wilmington, NC (US);
Nokia Solutions and Networks Oy, Espoo, FI;
Abstract
Systems and techniques for oscillator control are described. A fixed or controlled oscillator feeds a plurality of evenly spaced tap points multiplexed to an output by a multiplexer. A phase change control circuit changes the multiplexer to a new tap point one phase tap at a time, with the change being made when an oscillator clock edge will not be repeated to an output. The phase change control circuit determines when to change the multiplexer setting based on the overflow of an accumulator, which is continuously summing an increment value. The sign of the accumulator increment value determines the direction of the multiplexor updates. The resulting output signal from the multiplexor is a new output frequency related to the oscillator frequency and the accumulator increment value. With a plurality of multiplexer controlled outputs and corresponding phase change control circuits, a plurality of output frequencies can be created from one oscillator.