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:
Nov. 18, 2008
Filed:
Dec. 12, 2007
Brian Remy, Houston, TX (US);
Michael D. Bryant, Austin, TX (US);
Benito R. Fernandez, Austin, TX (US);
Shouli Yan, Austin, TX (US);
Brian Remy, Houston, TX (US);
Michael D. Bryant, Austin, TX (US);
Benito R. Fernandez, Austin, TX (US);
Shouli Yan, Austin, TX (US);
The Board of regents, The University of Texas System, Austin, TX (US);
Abstract
A mixed-signal system for performing Taylor series function approximations is disclosed. The mixed-signal system includes a digital-to-analog converter (DAC), multiple resistor-to-resistor (R2R) ladders, various digital registers, a digital processor and an analog integrator. The digital processor calculates coefficients F, F, F, F, F, Fof a Taylor series equation and calculates distance functions. The digital processor also includes a digital register for storing a magnitude scaling factor φ(x,y) of the Taylor series equation. The DAC control register uploads a lead term F(x,y) of the Taylor series equation from the digital processor to the DAC. The first-order digital registers controls resistances of the R2R ladders. The second-order digital registers uploads coefficients F, F, F, F, Fof the Taylor series equation from the digital processor to the DAC. The analog integrator adds outputs from the DAC and the R2R ladder to generate approximation results for the Taylor series equation.