Patents by Inventor Yunsheng Lu

Yunsheng Lu 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).

  • Method and circuit structure for measuring and testing discrete components on mixed-signal circuit boards
    Patent number: 5659257
    Abstract: A structure for measuring and testing discrete components interconnected with one or more integrated circuits on a mixed-signal circuit board. Each integrated circuit includes a test cell comprising a plurality of switches connected with a single on-chip bus which is in turn connected with a single circuit board bus. The structure permits a constant current to be supplied to the components over the single bus and voltage measurements to be made to determine the component values with a lower overhead in pins and board area.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: August 19, 1997
    Assignee: Ford Motor Company
    Inventors: Yunsheng Lu, Weiwei Mao