Patents by Inventor HongTsan Lee

HongTsan Lee 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: 5448262
    Abstract: A method and apparatus for reducing power consumption by a display device includes monitoring time intervals between successive updates by video update circuitry and time intervals between successive uses by one or more user-interface devices, such as a mouse or keyboard. A first time-elapsed signal is generated if a predetermined time interval is exceeded between successive uses by the user-interface devices. A reset input to a first timer is connected to the user-interface devices to restart the timing with each use. A second time-elapsed signal is generated if the interval between successive video updates exceeds a second predetermined time period. Video updating resets the timer used to monitor the video update circuitry, but once the second time-elapsed signal has been initiated, a video update will not disable the signal. Rather, the second time-elapsed signal is latched until the use of a user-interface device.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: September 5, 1995
    Assignee: ACC Microelectronics Corporation
    Inventors: HongTsan Lee, Jung-Chih Huang, Terng-Huei Lai