Patents by Inventor John Martin Warberg

John Martin Warberg 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: 4007382
    Abstract: A bipolar signal is recovered and separated into its positive portion and its negative portion. The incoming bipolar signal and its inverted form are separately compared to a switched threshold. Switching of the threshold from a low standby level to a high level is effected by feedback of the output signals. The circuit generates a switched reference signal which is applied to two comparator circuits, one for the bipolar signal, the other for the inverted bipolar signal, and a hysterisis generator switches the threshold to its high level when a comparator circuit produces an output signal.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: February 8, 1977
    Assignee: Canadian National Railway Company
    Inventor: John Martin Warberg