Patents by Inventor William Roff Thomas

William Roff Thomas 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).

  • Bi-directional voltage translator
    Patent number: 7098693
    Abstract: A bi-directional voltage translator is disclosed. The bi-directional voltage translator includes a step-up voltage translator for converting signals of a first voltage level to signals of a second voltage level, and a step-down voltage translator for converting signals of the second voltage level to signals of the first voltage level. The step-up voltage translator includes a first source sense circuit, a first block feedback circuit and a first output driver circuit. The step-down voltage translator includes a second source sense circuit, a second block feedback circuit and a second output driver circuit.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: August 29, 2006
    Assignee: International Business Machines Corporation
    Inventors: Mark Elliot Andresen, Robert Joseph Christopher, James Joseph Parsonese, William Roff Thomas, Wilson Velez, David Eduardo Vieira, Menlo Wuu