Patents by Inventor Harold A. Vaghy

Harold A. Vaghy 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).

  • Adaptive equalizer method and apparatus
    Patent number: 5245556
    Abstract: An equalizer is arranged for equalizing a received signal comprising 2-binary, 1-quaternary-coded multi-level signals S(-3), S(-1), S(+1), S(+3) corresponding to predetermined signal levels -3, -1, +1, +3, respectively. The equalizer includes a gain unit (107) with an adjustable gain, a filter (111) with an adjustable pole and zero, and a processor (119). The processor adjusts the equalizer by sampling equalized S(+3) signals and adjusting the gain, the pole and the zero so that the average value of the equalized S(+3) signals is substantially equal to +3 volts and the variance of the equalized S(+3) signals is minimized.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: September 14, 1993
    Assignee: Universal Data Systems, Inc.
    Inventors: Jason N. Morgan, Harold A. Vaghy
  • Quasi-random digital sequence detector
    Patent number: 5072448
    Abstract: Errors in a predetermined digital sequence are detected by utilizing a detector which includes memory elements such as a series shift register, and logic gates for detecting a predetermined subsequence. Errors are detected by comparing each bit in the data stream with the output of the memory. Logic gates inhibit the detection of an error in response to the subsequence detection.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: December 10, 1991
    Assignee: Universal Data Systems, Inc.
    Inventors: Keith E. Atwell, Harold A. Vaghy