Patents by Inventor Liu P. Nan

Liu P. Nan 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).

  • Multi-frequency displaying device for displaying both television and personal computer video signals
    Patent number: 5610663
    Abstract: The present invention relates to a multi-frequency displaying device for displaying both TV and PC video signals. The displaying device comprises a displaying screen for displaying TV or PC video signals, a video signal processing circuit for converting the TV video signals into TV RGB signals and TV sync signals, a sync circuit for converting the TV sync signals or PC sync signals into vertical and horizontal deflection signals, and a display control circuit for displaying the TV RGB signals or PC RGB signals in the display screen in synchronization with the vertical and horizontal deflection signals. The sync circuit comprises a multi-frequency horizontal oscillator for generating clock signals to convert the TV sync signals or PC sync signals with different frequencies into the horizontal deflection signals according to the switch.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: March 11, 1997
    Assignee: Acer Peripherals, Inc.
    Inventors: Liu P. Nan, Leu J. Hwei