Patents by Inventor Weishi Feng

Weishi Feng 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 reducing power dissipation in finite field arithmetic circuits
    Patent number: 6662346
    Abstract: A finite field arithmetic circuit with reduced power dissipation has first and second circuit inputs. A first circuit transition probability of the first circuit input is calculated by applying a random input to the first circuit input and a constant input to the second circuit input. A second circuit transition probability of the second circuit input is calculated by applying a constant input to the first circuit input and a random input to the second circuit input. One of the first and second circuit inputs having a lower circuit transition probability is selected. A first time-varying rate that a first input signal to the arithmetic circuit varies is compared with a second time-varying rate that a second input signal to the arithmetic circuit varies. The input signal having a higher time-varying rate is selected and coupled to the selected one of the first and second circuit inputs.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: December 9, 2003
    Assignee: Marvell International, Ltd.
    Inventors: Zhan Yu, Weishi Feng