Patents by Inventor Cheen Doung

Cheen Doung 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).

  • Selective use of LCD overdrive for reducing motion artifacts in an LCD device
    Patent number: 7696988
    Abstract: Selectively providing LC overdrive by determining a relative noise level between a current video frame and a previous video frame and overdriving the current video frame based upon the determined relative noise level.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: April 13, 2010
    Assignee: Genesis Microchip Inc.
    Inventors: Che Ming Wu, Vincent Wang, Cheen Doung
  • LCD overdrive with data compression for reducing memory bandwidth
    Publication number: 20050225525
    Abstract: A reduced memory method, apparatus, and system suitable for implementation in Liquid Crystal Display (LCDs) that reduces a pixel element response time thereby enabling the display of high quality fast motion images thereupon. As a method of generating an overdrive pixel value in an LCD device, a predicted pixel value is compressed and stored. The stored compressed pixel value is then retrieved and decompressed as a start pixel value. An overdrive pixel value based upon a target pixel value and the start pixel value such that the overdrive pixel value enables a pixel to reach the target pixel value within a single frame period.
    Type: Application
    Filed: June 22, 2004
    Publication date: October 13, 2005
    Applicant: Genesis Microchip Inc.
    Inventors: Che Wu, Vincent Wang, Cheen Doung
  • Selective use of LCD overdrive for reducing motion artifacts in an LCD device
    Publication number: 20050225522
    Abstract: Selectively providing LC overdrive by determining a relative noise level between a current video frame and a previous video frame and overdriving the current video frame based upon the determined relative noise level.
    Type: Application
    Filed: June 22, 2004
    Publication date: October 13, 2005
    Applicant: Genesis Microchip Inc.
    Inventors: Che Wu, Vincent Wang, Cheen Doung
  • Method and apparatus for converting non-standard video broadcast signals to display capable video signals
    Patent number: 6657675
    Abstract: Non-standard broadcast television signals are processed and converted for proper reception and display. Extra or missing horizontal lines are processed using modulo or digital phase lock loop-type circuit to change clock output signal proportionately according to a difference determined by comparing a standard video signal value with an actual input signal line count value, such that modified clock output signal serves as a clock input signal for circuit accepting standard video format. Non-standard video signal having improper odd-even field sequencing is also processed and converted.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: December 2, 2003
    Assignee: NDSP Corporation
    Inventors: Cheen Doung, Lei He, Yi Chen, Hong Min Zhang