Patents by Inventor Ronald T. Christopherson

Ronald T. Christopherson 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).

  • Automated shielding algorithm for dynamic circuits
    Patent number: 6510545
    Abstract: An automated shielding tool, algorithm, and design methodology for shielding integrated circuits is disclosed herein. This is accomplished by inserting VDD and VSS wire proximate to signal wires on the same metal layer. The noise issues for dynamic circuits is described along with the benefits and costs of wire shielding. The methodology of the shield tool is a systematic approach for dealing with noise due to capacitive and inductive coupling.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: January 21, 2003
    Assignee: Sun Microsystems, Inc.
    Inventors: Gin S. Yee, Ronald T. Christopherson