IMAGE REPRODUCING DEVICE

PURPOSE:To properly maintain a reaching position of an electron beam in a cathode-ray tube regardless of causes by providing an auxiliary deflection means, a memory means, and a beam reaching position correction circuit means in a cathode-ray tube part and an image signal circuit part. CONSTITUTION:...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HATAJIRI KIMIO, UEKI TOSHIHISA
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To properly maintain a reaching position of an electron beam in a cathode-ray tube regardless of causes by providing an auxiliary deflection means, a memory means, and a beam reaching position correction circuit means in a cathode-ray tube part and an image signal circuit part. CONSTITUTION:A color cathode-ray tube 21 is provided with an auxiliary deflection part 41 separately from an electron beam deflection part 25. A memory part 35 for storing a correction deflection signal data corresponding to an electron beam reaching position in a display screen 24 of the cathode-ray tube 21 is also provided. A circuit means containing a control unit 12 reads out the correction deflection signal data from the memory part 35 in accordance with scanning for the screen 24 by electron beams from an electron beam generation part 22 in the cathode-ray tube 21, and feeds a correction deflection signal based thereon to a deflection part 41. Accordingly, a state wherein an electron beam reaching position to the screen 24 is not properly maintained can be accurately coped with regardless of causes.