Patents by Inventor Hurley H. Song

Hurley H. Song 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).

  • Hierarchial power network simulation and analysis tool for reliability testing of deep submicron IC designs
    Patent number: 5878053
    Abstract: The present invention pertains to a method for analyzing a semiconductor chip design for determining potential voltage drop and electromigration problems. Initially, the semiconductor chip design is divided into a plurality of blocks. A block level verification is then performed based on the assumption that full voltage is being supplied to each of the blocks. Next, the blocks are modeled by an equivalent RC network. This RC network is then reduced into a simpler representation. The voltage drops are determined based on the reduced, equivalent model. The blocks are then reanalyzed with the supply voltage input to the blocks reduced according to the calculated voltage drops. Thereby, a more realistic simulation can be achieved.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: March 2, 1999
    Assignee: Synopsys, Inc.
    Inventors: Han Young Koh, Jeh-Fu Tuan, Tak K. Young, Chiping Ju, Hurley H. Song