Patents by Inventor Charles J. Simon

Charles J. Simon 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).

  • Conferencing arrangement for use in a PCM system
    Patent number: 4022991
    Abstract: A conference arrangement for use in a pulse code modulated system including first and second control memories and a comparison logic circuit. Two words corresponding to two channels are read from information memory during each time slot and after proper comparison, the largest sample is transmitted to a third channel. Also included is a dial tone source for supplying dial tone to all terminations in the system by writing a time slot number assigned to the dial tone source and the respective ones of the channel memory words in the control memory associated with the channels.
    Type: Grant
    Filed: September 18, 1975
    Date of Patent: May 10, 1977
    Assignee: GTE Automatic Electric Laboratories Incorporated
    Inventors: Michael J. Kelly, Alex W. Kobylar, Robert L. Lindsay, Satyan G. Pitroda, Charles J. Simon