Patents by Inventor David T. Newsome

David T. Newsome 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 generating a multiphase clock
    Patent number: 7075351
    Abstract: A multiphase clock generating apparatus includes a clock generator providing an M-clock having a frequency M times that of a received reference clock. Divider circuitry is coupled to provide an alignment signal having 1/M the frequency of the M-clock. A recovery circuit recovers up to M distinct clocks from the M-clock in accordance with the alignment signal. The recovered clocks have substantially an N•180°/M phase difference from each other, wherein N?1.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: July 11, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daniel A. Berkram, Perry M. Wyatt, David T. Newsome
  • Method and apparatus for generating a quadrature clock
    Patent number: 6917232
    Abstract: A quadrature dock generating apparatus includes a clock generator providing a double clock having a frequency that is twice that of a received reference clock. Divider circuitry is coupled to provide an alignment signal having half the frequency of the double clock. A recovery circuit recovers a first clock and a second clock from the double clock in accordance with the alignment signal. The first and second clocks have substantially a 90° phase difference.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: July 12, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Perry M. Wyatt, Daniel A. Berkram, David T. Newsome