Patents by Inventor Weifeng Sun

Weifeng Sun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080018648
    Abstract: A method of rendering a graphical scene includes determining a plurality of functions that contribute to a light transport model of the scene, projecting each function of the plurality of functions into the wavelet domain, encoding basis coefficients of each function in a wavelet tree, each function being encoded in at least one wavelet tree such that the plurality of functions are represented in the wavelet domain by a plurality of wavelet trees, traversing direct paths through the plurality of wavelet trees, along which direct paths an integral coefficient may be nonzero, to determine the radiance of a point in the scene, and rendering the scene.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 24, 2008
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Weifeng Sun, Amar Mukherjee
  • Publication number: 20080012857
    Abstract: A method of rendering a graphical scene includes determining a plurality of functions that contribute to a light transport model of a scene, factoring the plurality of functions into a set of fixed functions and one varying function, determining a first radiance transfer vector that represents the product of the fixed functions in the wavelet domain, determining a second radiance transfer vector that represents the one varying function in the wavelet domain, determining an inner product of the first and second radiance transfer vectors to approximate a radiance of a point x in the scene, and rendering the scene.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 17, 2008
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Weifeng Sun, Amar Mukherjee
  • Publication number: 20080016137
    Abstract: A computer readable medium configured to approximate the integral of the product of a plurality of functions includes logic configured to factor the plurality of functions into a set of fixed functions and one varying function, logic configured to determine a first vector that represents the product of the fixed functions in the wavelet domain, logic configured to determine a second vector that represents the one varying function in the wavelet domain, and logic configured to determine an inner product of the first vector and the second vector.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 17, 2008
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Weifeng Sun, Amar Mukherjee
  • Publication number: 20080016138
    Abstract: A computer readable medium is configured to determine the integral of the product of a plurality of functions. The computer readable medium includes logic configured to project each function of the plurality of functions into the wavelet domain, logic configured to encode basis coefficients of each function in a wavelet tree, each function being encoded in at least one wavelet tree such that the plurality of functions are represented in the wavelet domain by a plurality of wavelet trees, and logic configured to traverse direct paths through the plurality of wavelet trees to determine the integral of the product of the functions represented by the wavelet trees, along which direct paths an integral coefficient may be nonzero.
    Type: Application
    Filed: March 1, 2007
    Publication date: January 17, 2008
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Weifeng Sun, Amar Mukherjee
  • Publication number: 20070205820
    Abstract: The low power consumption CMOS high voltage driving circuit relates to a kind of high voltage driving circuit for output driving, and there is an out buffer stage between the output end of the level switch stage and the input end of the high voltage output stage, comprising a high voltage PMOS pipe and a high voltage NMOS pipe. The source of the high voltage PMOS pipe is connected with the power supply, its gate electrode is connected with the output end of the upper level out buffer unit as the input end of the current level out buffer unit. The source of the high voltage NMOS pipe is put to earth, and its gate electrode serves as the receiving end of the 3ith sequence signal. The drain region of the high voltage PMOS pipe is connected with that of the high voltage NMOS pipe and is connected with the input end of the lower level out buffer unit as the output end of the current level out buffer unit.
    Type: Application
    Filed: October 20, 2004
    Publication date: September 6, 2007
    Inventors: Longxing Shi, Weifeng Sun, Haisong Li, Yangbo Yi