Patents by Inventor Shih-Hsun Chien

Shih-Hsun Chien 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).

  • Patent number: 8368728
    Abstract: An adaptive feedback control method of a field sequential color display includes converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field (D-field); performing sampling; performing a pixel by pixel sum operation for each separated color through color gamut conversion to obtain a color difference sum; performing a feedback control at a bit precision to obtain a minimum color difference sum; and then performing a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight gray-scale value of the input image; or dividing the input image into a plurality of blocks; performing feedback control operations; obtaining a minimum sum in each block to serve as an optical backlight value, thereby reducing a CBU phenomenon, and minimizing or controlling the generated CBUs to reduce the operation loads.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: February 5, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chun-Ho Chen, Shih-Hsun Chien, Fang-Cheng Lin, Yi-Pai Huang, Han-Ping Shieh, Wen-Chih Tai, Shian-Jun Chiou
  • Publication number: 20100214327
    Abstract: An adaptive feedback control method of a field sequential color display includes converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field (D-field); performing sampling; performing a pixel by pixel sum operation for each separated color through color gamut conversion to obtain a color difference sum; performing a feedback control at a bit precision to obtain a minimum color difference sum; and then performing a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight gray-scale value of the input image; or dividing the input image into a plurality of blocks; performing feedback control operations; obtaining a minimum sum in each block to serve as an optical backlight value, thereby reducing a CBU phenomenon, and minimizing or controlling the generated CBUs to reduce the operation loads.
    Type: Application
    Filed: February 2, 2010
    Publication date: August 26, 2010
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chun-Ho Chen, Shih-Hsun Chien, Fang-Cheng Lin, Yi-Pai Huang, Han-Ping Shieh, Wen-Chih Tai, Shian-Jun Chiou