CRT FOCUS CORRECTION DEVICE AND METHOD

PROBLEM TO BE SOLVED: To provide a CRT focus correction device and method which digitally focus-control a R/G/B CRT individually in a television set using a three-tube type projection optical system . SOLUTION: In a video processing system having the three-tube type optial system includes a memory f...

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Hauptverfasser:	RYU IL-HYUN, BIN SHOJUTSU, KO KEIKAN, LEE SUK-SUN, LIM NAM-GYU
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SEALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a CRT focus correction device and method which digitally focus-control a R/G/B CRT individually in a television set using a three-tube type projection optical system . SOLUTION: In a video processing system having the three-tube type optial system includes a memory for storing focus correction data about RT, G, B and CRT for each screen position, a controler for reading the respective focus correction data about R, G, B and CRT from the memroy for each screen position according to a synchronization signal, and a focus correction generator for calculating the focus correction data read from the memory and generating R, G and B analog focus correction signals to be applied to R, G and B focus coils. COPYRIGHT: (C)2004,JPO