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公开(公告)号:US5712538A
公开(公告)日:1998-01-27
申请号:US577459
申请日:1995-12-22
CPC分类号: H04N9/16
摘要: A phosphor screen in a display device is scanned by separate electron beams in order to generate images of different frequency content in one color in substantially the same part of the phosphor screen. The different images can be perceived as a composite image for some time. The individual electron beams can be modulated by means of a cathode modulator on the basis of a high frequency and a low frequency component of an electronic image signal or on the basis of an image component and a text component of an electronic image signal. The modulations of the individual electron beams may be slightly delayed relative to one another in order to avoid overloading of the phosphor material.
摘要翻译: 通过单独的电子束扫描显示装置中的荧光屏,以在荧光屏的基本相同的部分中产生一种颜色的不同频率含量的图像。 不同的图像可以被视为合成图像一段时间。 可以基于电子图像信号的高频和低频分量,或者基于电子图像信号的图像分量和文本分量,借助于阴极调制器来调制各个电子束。 单个电子束的调制可以相对于彼此稍微延迟,以避免荧光体材料的过载。