Patents by Inventor Yau-Tsun Steven Li

Yau-Tsun Steven Li 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).

  • Patent number: 7886256
    Abstract: Approaches for determining a static timing analysis of a logic design are disclosed. Physical delay arcs of a plurality of physical elements of an integrated circuit specify respective propagation delays from inputs of the physical elements to outputs of the physical elements. Logic components of the logic design are mapped to selected ones of the physical components of the physical elements. For each of the logic components, the logic delay arcs are determined from the physical delay arcs. Each logic delay arc for each logic component specifies a propagation delay from an input of the logic component to an output of the logic component. A static timing analysis of the logic components is performed using the logic delay arc, and data from the timing analysis is output.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: February 8, 2011
    Assignee: Xilinx, Inc.
    Inventors: Pradip Kumar Jha, Dinesh D. Gaitonde, Yau-Tsun Steven Li
  • Patent number: 6286128
    Abstract: A method for design optimization using logical and physical information is provided. In one embodiment, a method for design optimization using logical and physical information, includes receiving a behavioral description of an integrated circuit or a portion of an integrated circuit, optimizing placement of circuit elements in accordance with a first cost function, and optimizing logic of the circuit elements in accordance with a second cost function, in which the optimizing placement of the circuit elements and the optimizing logic of the circuit elements are performed concurrently. The method can further include optimizing routing in accordance with a third cost function, in which the optimizing routing, the optimizing placement of the circuit elements, and the optimizing logic of the circuit elements are performed concurrently.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: September 4, 2001
    Assignee: Monterey Design Systems, Inc.
    Inventors: Lawrence Pileggi, Majid Sarrafzadeh, Sharad Malik, Abhijeet Chakraborty, Archie Li, Robert Eugene Shortt, Christopher Dunn, David Gluss, Dennis Yamamoto, Dinesh Gaitonde, Douglas B. Boyle, Emre Tuncer, Eric McCaughrin, Feroze Peshotan Taraporevala, Gary K. Yeap, James S. Koford, Joseph T. Rahmeh, Lilly Shieh, Salil R. Raje, Sam Jung Kim, Satamurthy Pullela, Yau-Tsun Steven Li, Tong Gao