Patents by Inventor Bernd Beuter

Bernd Beuter 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).

  • Autofocus device for still projection apparatus
    Patent number: 5455411
    Abstract: An autofocus device for still projection apparatus employing a light source and dual photoreceiver. A signal generator applies variable current pulses to the light source. A signal processing circuit converts output signals from the dual photoreceiver into digital signals from which direction and speed control signals are derived and applied to focus control means. Alternative signal processing circuits are disclosed for driving either an analog on digital stepper focus drive motor.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: October 3, 1995
    Assignee: Eastman Kodak Company
    Inventor: Bernd Beuter