Patents by Inventor Zhang Xuguang

Zhang Xuguang 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).

  • Method and apparatus for designing circuits for wave pipelining
    Patent number: 5796624
    Abstract: A family of CFET logic circuits useful for wave-pipeline systems is described, and a method to design same. The invention uses complementary transmission gates and pull-up or pull-down transistors to achieve a family of CFET logic circuits which include AND, NAND, OR, NOR, XOR, XNOR, select, select-invert, invert, and not-invert functions. Each circuit is tuned to provide substantially equal delays, high-quality ones and zeros, and substantially equal rise and fall times, for every combination of input-state transition and output-state transition.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: August 18, 1998
    Assignee: Research Foundation of State University of New York
    Inventors: Ramalingam Sridhar, Zhang Xuguang
  • Complementary field-effect transistor logic circuits for wave pipelining
    Patent number: 5528177
    Abstract: A family of CFET logic circuits useful for wave-pipeline systems is described, and a method to design same. The invention uses complementary transmission gates and pull-up or pull-down transistors to achieve a family of CFET logic circuits which include AND, NAND, OR, NOR, XOR, XNOR, select, select-invert, invert, and not-invert functions. Each circuit is tuned to provide substantially equal delays, high-quality ones and zeros, and substantially equal rise and fall times, for every combination of input-state transition and output-state transition.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: June 18, 1996
    Assignee: Research Foundation of State University of New York
    Inventors: Ramalingam Sridhar, Zhang Xuguang