METOD FOER ALSTRING AV KORREKTIONSFAKTORSIGNALER FOER KATODSTRAOLEROER

METOD FOER ALSTRING AV KORREKTIONSFAKTORSIGNALER FOER KATODSTRAOLEROER

A method of convergence correction in a three beam color cathode ray tube dividing the screen into a plurality of discrete areas. Digital values for convergence factor signals are derived for a predetermined number of the discrete areas and a spreading algorithm is used to derive digital values for...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SOWTER BRIAN RAYMOND
Format: Patent
Sprache:fin
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:A method of convergence correction in a three beam color cathode ray tube dividing the screen into a plurality of discrete areas. Digital values for convergence factor signals are derived for a predetermined number of the discrete areas and a spreading algorithm is used to derive digital values for the remaining areas. The resulting digital values are stored in a digital store and used to provide convergence correction factor signals during operation of the tube.