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:
Apr. 26, 2016
Filed:
Mar. 14, 2014
The Regents of the University of California, Oakland, CA (US);
Donald M. Wiberg, Santa Cruz, CA (US);
Kenneth D. Pedrotti, Soquel, CA (US);
Chengcheng Xu, Santa Cruz, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
In one aspect, the invention provides a method implemented by an analog hardware circuit for fast frequency estimation. The analog circuit may be implemented a main oscillator circuit block [, a P matrix circuit block [, a K matrix circuit block[, and a sigma integrator circuit block [. From input signals [having unknown frequency, amplitude and phase, the analog hardware circuit generates estimates of state variables x, x, xof a model oscillator, and outputs a sinusoidal estimate [of the model oscillator signal. The analog hardware circuit generates the estimates by implementing in continuous time an extended Kalman filter that relates a generating frequency 107 of the model oscillator to xby an affine transformation ω=ω+£x, where k is a slope of a frequency error estimate and coo is a best estimate input signal frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile