Patents by Inventor Ernst-Michael Czempiel

Ernst-Michael Czempiel 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).

  • Method and apparatus for signaling an existing telephone communication between picture telephone apparatuses
    Patent number: 4560833
    Abstract: The subject matter of the invention is a method and an apparatus for signaling an existing picture telephone communication for picture telephone apparatuses. The picture telephone apparatus (1) includes a transmitter (2) for transmitting a short identification signal upon lifting off the handset (1a) as a picture telephone identification signal (2a) through the audio channel, a detection circuit (3) for detecting an incoming picture telephone identification signal and an indication unit (D) for an acoustical and/or optical indication.
    Type: Grant
    Filed: January 25, 1984
    Date of Patent: December 24, 1985
    Assignee: Krone GmbH
    Inventors: Jens Weber, Ernst-Michael Czempiel