Patents by Inventor Joerg Westermayer

Joerg Westermayer 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).

  • Circuit arrangement for the control of a crypto operation in the case of procedure-controlled semi-duplex data transmission systems
    Patent number: 4323729
    Abstract: A crypto control circuit arrangement is disclosed for controlling crypto operation in the case of procedure-controlled semi-duplex data transmission systems in which data are transmitted from a first station with a first data device and a first crypto device, via a transmission path, to a second station having a second crypto device and a second data device. The changes of the data transmission direction are signaled with an order word which is transmitted from the first crypto device to the second crypto device and is evaluated with the help of an order evaluator. A control signal is emitted at the output of the second data device which prepares the second crypto device for the transmission when an end signal is transmitted from the first data device to the second data device.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: April 6, 1982
    Assignee: Siemens Aktiengesellschaft
    Inventor: Joerg Westermayer