Patents by Inventor Alpha Hsu

Alpha Hsu 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).

  • Power-saving circuit and method for light sources of a display device
    Patent number: 6812921
    Abstract: A power-saving circuit for a light source of a LCD monitor is disclosed. The power-saving circuit indirectly controls the on-off state of the light source by controlling the driving circuit of the light source. The power-saving circuit includes a control signal generator and a switching device. The control signal generator produces a low-frequency periodic control signal, the frequency of which is higher than a switching frequency of frames of the monitor. The switching device is coupled between the control signal generator and the driving circuit and used for alternatively controlling the on-off state of the light source by controlling the operation of the driving circuit.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: November 2, 2004
    Assignee: Mitac International Corp.
    Inventor: Alpha Hsu
  • Power-saving circuit and method for light sources of a display device
    Publication number: 20020149690
    Abstract: A power-saving circuit for a light source of a LCD monitor is disclosed. The power-saving circuit indirectly controls the on-off state of the light source by controlling the the driving circuit of the light source. The power-saving circuit includes a control signal generator and a switching device. The control signal generator produces a low-frequency periodic control signal, the frequency of which is higher than a switching frequency of frames of the monitor. The switching device is coupled between the control signal generator and the driving circuit and used for alternatively controlling the on-off state of the light source by controlling the operation of the driving circuit.
    Type: Application
    Filed: January 10, 2002
    Publication date: October 17, 2002
    Inventor: Alpha Hsu