Method for controlling cut-off point and gain in video reproduction device means of three measured currents

在垂直帧消隐期间向各彩色通道注入用于阴极电流的截止和驱动控制的测量行。由于物理相关的指数型束流特性曲线是阴极控制电压V#-[K]的函数，所以利用特性曲线的指数γ及两阴极电流I#-[K1]和I#-[K2]之比来形成截止和驱动控制的控制基准值。控制过程从固定指数值γ或两阴极电流I#-[K1]和I#-[K2]之比开始。然而已发现，即使假定指数值γ或两阴极电流I#-[K1]和I#-[K2]之比为固定值，也不能得到单色图像显示最佳结果。于是，本发明将指数γ定义为彩色显像管1的函数，目的在于将依赖γ的DC电压偏置u#-[0f]减小为零。 Recent circuit concepts inject mea...

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Bibliographische Detailangaben

1. Verfasser:	HELMUT SOWIG
Format:	Patent
Sprache:	chi ; 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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