Patents by Inventor Ning Mei Yu

Ning Mei Yu 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).

  • Semiconductor circuitry to process analog signals using weighted- sum operations
    Patent number: 5939925
    Abstract: A semiconductor operational circuit conducts real-time analog vector operations to permit the determination of the center of gravity of an image of a moving object. The circuit employs a first processing stage utilizing CMOS source follower circuits to perform weighted linear sum operations on the analog signals. A second processing stage utilizes comparator circuitry to perform comparison operations involving data from the weighted-sum and non-weighted-sum operations. A third processing stage utilizes exclusive OR gates to provide digital data outputs based on the comparison operation results.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: August 17, 1999
    Assignee: Tadashi Shibata and Tadahiro OHMI
    Inventors: Tadashi Shibata, Tadahiro Ohmi, Ning Mei Yu, Tsutomu Nakai