Patents by Inventor Ron A. Perry

Ron A. Perry 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 efficient single/dual tone decoder apparatus and method for identifying call-progression signals
    Patent number: 5321745
    Abstract: A process for determining the presence of either speech or one of a plurality of expected single-frequency signals on a line includes the steps of measuring the total signal energy on the line; measuring the signal energy present in each one of a plurality of selected separate frequency bands and identifying the two frequency bands having the highest signal energies; determining whether the highest signal energy exceeds a first selected threshold value; determining whether the highest signal energy exceeds the second highest signal energy by greater than a second selected threshold value; determining the amount of out-of-band signal energy; and determining whether the highest signal energy exceeds the out-of-band signal energy by greater than a third selected threshold value.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: June 14, 1994
    Assignee: VMX, Inc.
    Inventors: Eatamar Drory, Ron A. Perry, Robert J. Machuta, Clifford N. Baumann