Patents by Inventor Nai C. Lee

Nai C. 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).

  • System for partitioning and testing submodule circuits of an integrated circuit
    Patent number: 5107208
    Abstract: A system for providing testing capability of individual submodules on an integrated circuit module. A test bus having a plurality of conductors is connected to selected internal ports of said submodules through three-way analog switches. Each three-way analog switch provides the capability to observe and control an internal port through combination of the ON/OFF status of two transmission gates. Test patterns for controlling the transmission gates may be provided by onboard D flip-flops which are externally programmed to control or observe ports of an individual submodule.
    Type: Grant
    Filed: June 11, 1991
    Date of Patent: April 21, 1992
    Assignee: North American Philips Corporation
    Inventor: Nai C. Lee