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    • 1. 发明申请
    • Colour display device
    • 彩色显示设备
    • US20010006327A1
    • 2001-07-05
    • US09745878
    • 2000-12-22
    • Jozef Cornelis Walterus Van Vroonhoven
    • H05B037/00H05B039/00G09G003/10
    • H01J29/563H01J2229/4841
    • A color display device (19) is disclosed having an improved focus performance. In state-of-the-art color display tubes, a static voltage is applied to the focusing electrode (23). This means that only one focus voltage is available for the entire range of beam currents. In general, due to the fact that the diameter of the electron beams (7,8,9) increases as the beam current increases, the focus voltage is a function of this beam current, which itself is determined by the cathode voltage. In this invention, a color display device (19) is disclosed in which the voltage on the focusing electrode (23) is changed as a function of the cathode voltages, thereby significantly improving the focus performance.
    • 公开了一种具有改进的聚焦性能的彩色显示装置(19)。 在最先进的彩色显像管中,静电压被施加到聚焦电极(23)。 这意味着只有一个聚焦电压可用于整个光束电流范围。 通常,由于电子束(7,8,9)的直径随着电流的增加而增加,所以聚焦电压是该束电流的函数,其本身由阴极电压决定。 在本发明中,公开了一种彩色显示装置(19),其中聚焦电极(23)上的电压根据阴极电压而变化,从而显着提高了聚焦性能。
    • 5. 发明授权
    • Color cathode-ray tube and color cathode-ray tube apparatus
    • 彩色阴极射线管和彩色阴极射线管装置
    • US06753644B1
    • 2004-06-22
    • US09675121
    • 2000-09-28
    • Katsuyo Iwasaki
    • Katsuyo Iwasaki
    • H01J2950
    • H01J29/563H01J29/68H01J29/703
    • A color cathode-ray tube including an in-line electron gun and a color cathode-ray tube apparatus including the same are provided. At an end, on a screen side, of the electron gun, two pairs of members for generating a magnetic field are placed above and below side beams of three electron beams so as to sandwich them, respectively. Between each of the two pairs of members for generating a magnetic field, a localized barrel magnetic field is formed to vary cross-sectional shapes of the side beams positioned on both sides of a center beam so that the cross-sectional shape of one of the side beams is horizontally or vertically elongated to a higher degree than that to which the cross-sectional shape of the other of the side beams is. Magnetic fields for reverse correction of spot distortions of the side beams are generated and therefore the symmetry in the spot distortions of the side beams asymmetric with each other is improved, thus improving focus quality.
    • 提供一种包括一字形电子枪的彩色阴极射线管和包括该彩色阴极射线管的彩色阴极射线管装置。 在电子枪的屏幕侧端部,将两对用于产生磁场的构件放置在三个电子束的侧梁的上方和下方,以分别夹着它们。 在用于产生磁场的两对构件中的每一个之间,形成局部的筒状磁场以改变位于中心梁两侧的侧梁的横截面形状,使得其中的一个的横截面形状 侧梁水平或垂直伸长到比另一个侧梁的横截面形状更高的程度。 产生用于反向校正侧光束的光斑变形的磁场,因此提高了彼此不对称的侧光束的光斑失真的对称性,从而提高了聚焦质量。
    • 7. 发明授权
    • Cathode ray tube (CRT) having shaped beams
    • 具有成形梁的阴极射线管(CRT)
    • US4603279A
    • 1986-07-29
    • US537759
    • 1983-09-30
    • J. Nathaniel Marshall
    • J. Nathaniel Marshall
    • G09G1/20H01J29/56H04N3/28H01J29/70G09G1/04H01J29/06
    • G09G1/20H01J29/563H04N3/28
    • A high definition page display system for graphics and text utilizing shaped beams in a CRT is disclosed. Information for the several lines which are written simultaneously is made available in parallel. The invention is described in terms of a character set and text generation, but the same principles apply to any other graphic or bit map and to storage in ROMs or loadable RAMs. Each beam of a multiple CRT tube is biased to generate a portion of a character or grahic as it scans across the tube. It takes 12 lines to scan a character with a N-beam tube, 12 over N character scans are therefore required. With the same scanning speed as with a single beam, this factor can be used to increase definition (i.e. number of lines.) Also the advantage of multiple beams can be used to reduce scanning speed, if this is useful to improve brightness or spot definition, or to increase the number of dots per line. Reduced scanning speed can also reduce costs, particularly if it brings the scan rate in line with standard components available commercially. Another way to use the advantages would be higher refresh rates.
    • 公开了一种用于在CRT中使用成形光束的图形和文本的高清晰度页面显示系统。 同时写入的几条线的信息可以并行提供。 根据字符集和文本生成描述本发明,但是相同的原理适用于任何其他图形或位图,并且存储在ROM或可加载RAM中。 多个CRT管的每个光束被偏压以产生一个字符的部分或者当它扫过管时的大部分。 需要12行扫描带有N光束管的字符,因此需要12个N字符扫描。 以与单个光束相同的扫描速度,该因子可用于增加清晰度(即线数)。多光束的优点也可用于降低扫描速度,如果这对改善亮度或光斑定义有用 ,或者增加每行的点数。 降低扫描速度也可以降低成本,特别是如果扫描速度符合商业上可用的标准组件。 另一种使用优势的方法是更高的刷新率。