Patents by Inventor Carolyn E. Schmidt

Carolyn E. Schmidt 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).

  • Error reduction speech communication system
    Patent number: 4291405
    Abstract: An arrangement reduces transmission errors in a communication system that includes a transmitter operative to convert an input signal into blocks of coded signals and a receiver operative to convert the coded blocks into a replica of the input signal. In the transmitter, a signal representative of first features of the input signal and a signal corresponding to second features of the input signal are generated. In the receiver, corrupted received coded signals are detected responsive to the first feature signal and the received blocks of coded signals. Each corrupted received coded signal is modified jointly responsive to the received blocks of coded signals and the second feature signal to reduce errors in the input signal replica.
    Type: Grant
    Filed: September 7, 1979
    Date of Patent: September 22, 1981
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Nuggehally S. Jayant, Carolyn E. Schmidt, Raymond Steele