Patents by Inventor Heinz Heister

Heinz Heister 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).

  • Signal level control circuit having alternately switched capacitors in the feedback branch
    Patent number: 5014130
    Abstract: A circuit for controlling the amplitude of video signals includes a control circuit which contains a first capacitor. For each image pulse, a charge which corresponds to the amplitude of the generated video signal during a prior frame cycle is stored in the first capacitor. During the frame flyback pulse, this charge is transferred to a second capacitor by means of a switch. The second capacitor's voltage serves as a control voltage for the video signal. After the charge is transferred to the second capacitor, the first capacitor is discharged.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: May 7, 1991
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heinz Heister, Wolfango Jann