Patents by Inventor Ling-Ling Wang

Ling-Ling Wang 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: 5254890
    Abstract: A ground bouncing reducing circuit comprises a first control means, a second control means and an output means for generating an output signal at a fourth output terminal. The first control means generates a first control signal at a first output terminal and a second control signal at a second output terminal in response to an input signal. The first control signal and the second control signal are not asserted at the same time. The second control means generates a third control signal at a third output terminal in response to the first control signal and the second control signal. The ground bouncing phenomenon is reduced when the output signal changes state.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: October 19, 1993
    Assignee: Acer Incorporated
    Inventors: Ling-Ling Wang, Sheau-Jiung Lee
  • Patent number: 5185769
    Abstract: A high speed digital counter that can be easily tested comprises a plurality of subcounters having an input for receiving an incrementing signal and a carry output for outputting a carry signal when the subcounter has reached its counting capacity. The carry output of each subcounter is gated to the input of a next more significant subcounter by an OR gate which receives as inputs the carry signal and a test signal. The OR gate performs an OR on these two signals and outputs the result to the input of the next more significant subcounter. The OR gate allows the test signal to access each subcounter separately, and thus, each subcounter may be tested individually.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: February 9, 1993
    Assignee: Acer Incorporated
    Inventor: Ling-Ling Wang