Patents Assigned to Coherent Communications Systems Corporation
  • Coherent digital frequency shift keying system
    Patent number: 3932704
    Abstract: A frequency shift generator comprises a single source of high frequency oscillations and a programmable frequency divider. Keyed mark and space input signals serve to select two predetermined divider ratios, one for the mark frequency and the other for the space frequency. The invention provides means for generating stable electrical signals of audio frequency range by means of a coherent technique, that is, one in which the phase relationship of subsequent pulses can be precisely determined.
    Type: Grant
    Filed: August 19, 1970
    Date of Patent: January 13, 1976
    Assignee: Coherent Communications System Corporation
    Inventor: Andrew B. Bodony
  • Transceiver module for a table-top teleconferencing system
    Patent number: D346598
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: May 3, 1994
    Assignee: Coherent Communications Systems Corporation
    Inventors: James McCay, Jeremy F. Skene, Steven Vordenberg
  • Transceiver module for a table-top teleconferencing system
    Patent number: D355416
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: February 14, 1995
    Assignee: Coherent Communications Systems Corporation
    Inventors: James McCay, Jeremy F. Skene, Steven Vordenberg