Patents by Inventor Marvin Epstein

Marvin Epstein 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).

  • Multirate wire line modem apparatus
    Patent number: 5177734
    Abstract: Multirate wire line modem apparatus operable at either of two rates in either transmission or reception modes is provided according to the teachings of the instant invention. Full duplex operation and echo cancellation are utilized for both voice and data. Structurally an IOP processor acts as a system controller in controlling transmission and reception digital signal processors which provide the independent transmission and reception functions of the resulting multirate modem apparatus.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: January 5, 1993
    Assignee: ITT Corporation
    Inventors: Peter Cummiskey, Marvin Epstein, Paul A. Gilmour, Richard Kim
  • Multirate wire line modem apparatus
    Patent number: 5005168
    Abstract: Multirate wire line modem apparatus operable at either of two rates in either transmission or reception modes is provided according to the teachings of the instant invention. Full duplex operation and echo cancellation are utilized for both voice and data. Structurally an IOP processor acts as a system controller in controlling transmission and reception digital signal processors which provide the independent transmission and reception functions of the resulting multirate modem apparatus.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: April 2, 1991
    Assignee: ITT Corporation
    Inventors: Peter Cummiskey, Marvin Epstein, Paul A. Gilmour, Richard Kim