Patents by Inventor Daniel A. Preston

Daniel A. Preston 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).

  • Network delay identification method and apparatus
    Publication number: 20020015424
    Abstract: Network delay is determined in order to synchronize a clock in a mobile station with a reference clock. Tone are generated that represent a sequence of bits in a synchronization flag. The tones are sampled beginning at a selected sample start time. The sampled tones are demodulated to identify the bit values in the synchronization flag. The demodulator is synchronized with the sampled tones in the synchronization flag by shifting the sample start time until the samples generate an optimum synchronization value. A reference time is then identified according to the optimum sample start time.
    Type: Application
    Filed: June 22, 2001
    Publication date: February 7, 2002
    Inventors: Daniel A. Preston, Joseph D. Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor