Patents by Inventor Harold L. Simonson

Harold L. Simonson 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).

  • Patent number: 5432813
    Abstract: A high chipping rate digital demodulator circuit is coupled to the output of an analog front end communications receiver and comprises a low pass filter in each channel of the receiver. The filtered output is coupled to a plurality of parallel branches each having an analog to digital converter which converts a portion of an analog sample to digital format and effectively reduces the system clock rate by a ratio of the number of parallel branches. One set of parallel branches is coupled to an early-late clock error detector circuits and another set of parallel branches is coupled to data signal detector circuits and then combined before being applied to a clock error processing channel and a data signal phase error channel which maintains the lower clock rate of the parallel branches.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: July 11, 1995
    Assignee: Unisys Corporation
    Inventors: Steven T. Barham, Samuel C. Kingston, Harold L. Simonson