Patents by Inventor Chin-Hsian Chang

Chin-Hsian 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).

  • Method and apparatus for compensating crosstalk in liquid crystal displays
    Patent number: 5670973
    Abstract: A method and apparatus for compensating crosstalk in liquid crystal displays is disclosed which involves applying boost voltages to the rows and columns of the display in proportion to the number of ON pixels in a row or column, the number of transition between "ON-and-OFF" or "OFF-and-ON" in each column, and the position of the pixel in a row. "Boost" voltages are applied to each row as it is being actively scanned to provide horizontal crosstalk compensation, while "boost" voltages are applied to each column during the vertical retrace interval of the display sequence to provide vertical crosstalk compensation. In a preferred embodiment, the vertical crosstalk compensation is determined during the vertical retrace interval over several flames.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: September 23, 1997
    Assignee: Cirrus Logic, Inc.
    Inventors: Chester Floyd Bassetti, Jr., Chin-Hsian Chang, Vlad Bril, Rakesh Kumar Bindlish