Patents by Inventor Shuo-Nan Hung

Shuo-Nan Hung 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).

  • Output buffer drive circuit with initial drive for semiconductor devices
    Patent number: 6411120
    Abstract: Output drivers do not generate current when the pull up and pull down circuits are producing control signals which are below the turn on thresholds. Accordingly, no noise is translated to the output of the device in this period of time. Accordingly, an initial drive interval is provided in which the pull up and pull down control signals are driven with higher current so that the corresponding signal changes at a higher rate of speed before it reaches the turn on thresholds. Near the turn on thresholds, the rate of change of the pull up and pull down control signals is controlled to minimize noise during the transition and thereafter.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: June 25, 2002
    Assignee: Macronix International Co., Ltd.
    Inventors: Shuo-Nan Hung, Chun Hsiung Hung