Siemens Aktiengesellschaft

Eizo Gmbh

Klaus Burkhardt

Wolfgang Eckhardt

Uwe Nagel

Wolfram Wersing

Hartmut Schulz

Andreas Kärcher

Silvia Gohlke

Ruth M&auml;nner

Erich Schaefer

The invention pertains to a method for operating an image-processing device, in which an image signal is digitally transmitted between a transmitter and at least one receiver, and in which the image signal comprises a timed sequence of images. An alternating signal which alternates at a signal alternation frequency is superimposed on the image content of the images before they are transmitted, and the signal alternation frequency is greater than or equal to the perception frequency resolvable by the human eye. The invention also pertains to an image-processing device.

Method for identifying improper transmission of images in an image-processing device and a corresponding image-processing device

A method and a circuit arrangement for controlling the operating point of a cathode ray tube ( ) for use in image technology applications. A video signal ( ) is supplied to both the tube ( ) and to a cathode ray tube model ( ), which the model ( ) 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.

Method and circuit arrangement for controlling the operating point of a cathode ray tube

The invention is directed to an extremely low-capacitance device for shaping an electron beam. The device is based on a ceramic body having a monolithic multi-layer structure. The manufacture of the ceramic body ensues with the assistance of LTCC technology, whereby this method is designationally modified. The body is constructed of pre-sintered ceramic layers whose lateral shrinkage is suppressed. The through apertures of the electrodes for the electron beam are thus arranged exactly coaxially, and the tolerances of the electrode dimensions are decoupled from the shrinkage during sintering. The electron beam of an electron gun is focused and the intensity thereof is modulated with the assistance of such a device.

Device for shaping an electron beam, method for producing said device and use thereof

In order to improve the definition and the breakdown behavior in a tube neck ( ) that includes an anode cylinder ( ) and a focusing cylinder ( ), the tube neck ( ) is made of a non-conductive material, particularly a ceramic. The inner surface of the anode cylinder ( ) and the inner surface and the outer surface of the focusing cylinder ( ) are coated with an electrically conductive material ( ).

Tube neck for cathode ray tube

A cathode ray tube is described having at least one electron gun including a cathode, a control grid, and a focusing unit, and a strip made of electrically conductive material applied to the cathode ray tube in parallel to the outer coating of the tube and connected to ground potential. Means and measures are provided to eliminate harmful effects of high-voltage sparkovers. The cathode ray tube may be is used, for example, in monitors.

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Kraichtal, Germany

Klaus Burkhardt