Patents by Inventor David E. Bockleman

David E. Bockleman 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).

  • Time interpolating direct digital synthesizer
    Patent number: 6353649
    Abstract: A direct digital synthesizer (200) includes a first accumulator (202) that acts as the frequency accumulator in order to generate the desired average frequency. A second accumulator (204) acts to generate a phase correction at each overflow, with the input into the phase correction accumulator (204) being a function of the input frequency. The clock signal of the phase correction accumulator (204) is the overflow signal (208) of the frequency accumulator (202). With this configuration, the frequency accumulator (202) generates the timing, and the phase correction accumulator (204) generates the interpolation value. The use of the two accumulators (202, 204) as described, eliminates the need to use a multiplier in the design which is a high current consumption device.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: March 5, 2002
    Assignee: Motorola, Inc.
    Inventors: David E. Bockleman, Jui-Kuo Juan