Patents by Inventor Erich Schaefer

Erich Schaefer 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 circuit arrangement for controlling the operating point of a cathode ray tube
    Patent number: 6690339
    Abstract: A method and a circuit arrangement for controlling the operating point of a cathode ray tube (3) for use in image technology applications. A video signal (1) is supplied to both the tube (3) and to a cathode ray tube model (2), which the model (2) uses to emulate a beam current. From the emulated beam current and a measured beam current, a characteristic quantity for adjusting the operating point is determined.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: February 10, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus Burkhardt, Uwe Nagel, Erich Schaefer, Hartmut Schulz
  • Method and circuit arrangement for controlling the operating point of a cathode ray tube
    Publication number: 20020000952
    Abstract: A method and a circuit arrangement for controlling the operating point of a cathode ray tube (30) for use in image technology applications. A video signal (10) is supplied to both the tube (30) and to a cathode ray tube model (20), which the model (20) uses to emulate a beam current. From the emulated beam current and a measured beam current, a characteristic quantity for adjusting the operating point is determined.
    Type: Application
    Filed: June 7, 2001
    Publication date: January 3, 2002
    Applicant: SIEMENS AG
    Inventors: Klaus Burkhardt, Uwe Nagel, Erich Schaefer, Hartmut Schulz