Patents by Inventor Raymond Kong

Raymond Kong 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).

  • Signal routing in programmable logic devices
    Patent number: 6496970
    Abstract: The present invention provides a new method to handle power and ground signals in modular design of programmable logic devices. During module implementation, the power and ground signals of each module are associated with area constraint properties. When performing routing in the module implementation phase, the power and ground signals together with regular local signals of the module are routed in accordance with their respective area constraint properties. However, the area constraint properties of the power and ground signals are removed during assembly phase while the area constraint properties of the local signals are retained.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: December 17, 2002
    Assignee: Xilinx, Inc.
    Inventors: Raymond Kong, Sandor S. Kalman
  • Signal routing in programmable logic devices
    Patent number: 6480999
    Abstract: The present invention provides a new method to handle power and ground signals in modular design of programmable logic devices. During module implementation, the power and ground signals of each module are associated with area constraint properties. When performing routing in the module implementation phase, the power and ground signals together with regular local signals of the module are routed in accordance with their respective area constraint properties. However, the area constraint properties of the power and ground signals are removed during assembly phase while the area constraint properties of the local signals are retained.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: November 12, 2002
    Assignee: Xilinx, Inc.
    Inventors: Raymond Kong, Sandor S. Kalman