Patents by Inventor Cyrus Y. Tsui

Cyrus Y. Tsui 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).

  • Programmable array logic circuit with testing and verification circuitry
    Patent number: 4625311
    Abstract: A field programmable array logic circuit is described wherein existing sensing circuitry is employed along with circuitry to enable every fuse location to be isolated, so that both a.c. and verification testing takes place under the same conditions, i.e. voltage levels and frequency, which occurs during normal operation of the programmed circuit.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: November 25, 1986
    Assignee: Monolithic Memories, Inc.
    Inventors: Mark E. Fitzpatrick, Cyrus Y. Tsui, Andrew K. Chan, Albert L. Chan