Patents by Inventor William M. Goodall

William M. Goodall 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).

  • Patent number: 4125744
    Abstract: In a pulse code modulation system, a source of key signals comprising a source of random pulses, multisection delay device, means for applying said pulses to said multisection delay device, apparatus for combining the outputs of predetermined sections of said delay device and apparatus for enciphering pulse code modulation signals by combining said signals with said combined output from said sections of said multisection delay device.
    Type: Grant
    Filed: December 24, 1948
    Date of Patent: November 14, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: William M. Goodall
  • Patent number: 3991268
    Abstract: 1. A pulse code modulation system, including a source of intelligence conveying code groups of pulse elements of pulse code modulated signals, apparatus for suppressing individual pulse elements of said code groups of pulse elements of said pulse code modulated signals at recurring intervals of time, means for transmitting other signals during said intervals during which said pulses are suppressed, and receiving apparatus for recovering said other signals from said pulse code modulation signals.
    Type: Grant
    Filed: December 24, 1948
    Date of Patent: November 9, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: William M. Goodall