Patents by Inventor Cornelis W. Reedyk

Cornelis W. Reedyk 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: 4493949
    Abstract: Disclosed is a digital station apparatus, such as a digital telephone set, capable of being operated in parallel on a subscriber's digital loop (e.g. in an extension mode) without the need to route all the PCM signals to common equipment. Only one of the parallel sets is active at a time; all the others are passive. In the passive state the telephone set receives only, and does not transmit. It monitors its own signal magnitude relative to the signal magnitude produced by the active "extension" on the same digital loop. When its own signal magnitude has satisfied a comparison criterion, then that passive set becomes active and both transmits and receives, while all other sets on the loop are passive.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: January 15, 1985
    Assignee: Northern Telecom Limited
    Inventors: Laurence J. Retallack, Cornelis W. Reedyk