Patents by Inventor Wei H. Chang

Wei H. Chang 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: 20240331611
    Abstract: Embodiments herein provide various apparatuses and techniques to efficiently mitigate front-of-screen (FoS) artifacts that may occur due to voltage fluctuations due to alternating current (AC) or direct current (DC) mechanisms that may occur in a variety of pixel types. In one embodiment, emission profile awareness circuitry may be implemented to mitigate for FoS artifacts due to DC mechanisms. Two-dimensional (2D) digital compensation circuitry may address the DC portion of the voltage fluctuations by accounting for an emission profile applied to content displayed on an electronic display. In some embodiments, the 2D digital compensation circuitry may compensate for the AC portion of the voltage fluctuations by duplicating the AC voltage fluctuations via voltage error subtraction circuitry and voltage error accumulation circuitry.
    Type: Application
    Filed: March 5, 2024
    Publication date: October 3, 2024
    Inventors: Hyunwoo Nho, Jie Won Ryu, Patrick R. Cruce, Yao Shi, Nicolas Le Dortz, Wei Xiong, Hyunsoo Kim, Wei H. Yao, Sun-Il Chang, Kingsuk Brahma, Ionut A. Mirel, Mahesh B. Chappalli, Ruicong Chen
  • Patent number: 5731093
    Abstract: A metallized film combination of an oriented polymeric substrate layer having on one surface thereof a coating of a blend of (a) a vinyl alcohol homopolymer or copolymer and (b) a vinylidene chloride copolymer, the coating blend having a metal layer thereon. The method involves coating the substrate after the substrate has been machine direction oriented and before the combination is transverse direction oriented followed by TD orientation and finally by depositing a metal layer on the blend surface.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: March 24, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Wei H. Chang, Shaw-Chang Chu, James A. Johnson, Jr.