Patents by Inventor Stephen George Kropp

Stephen George Kropp 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).

  • User selectable sound enhancement feature
    Publication number: 20040131206
    Abstract: A method and apparatus for providing a user-selectable sound profile for a telecommunications device, wherein the user may select at least one available frequency response profile to be applied to an audio signal by a digital equalizer.
    Type: Application
    Filed: January 8, 2003
    Publication date: July 8, 2004
    Inventors: James Cao, Stephen George Kropp, Jagjit S. Grewal, Nader Hodali
  • Sidetone level reduction circuit and method
    Patent number: 5852774
    Abstract: A sidetone level reduction circuit for reducing the sidetone level in digital cordless telephones incorporating continuously variable slope delta modulator/demodulator (CVSD) digital to analog technology is disclosed comprising a CVSD encoder for converting an analog voice signal to a digital signal, a CVSD decoder for converting a digital signal to an analog signal voice signal, and coupling means connecting the coincidence output of the CVSD encoder and the coincidence output of the CVSD decoder in a manner such that the coincidence output of the CVSD decoder can affect the CVSD encoder but the CVSD encoder cannot affect the CVSD decoder.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: December 22, 1998
    Assignee: VTech Communications, Ltd.
    Inventor: Stephen George Kropp