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    • 1. 发明公开
    • Cathode-ray tube display unit in which unwanted radiant electric field from face plate of cathode-ray tube is decreased
    • Kathodenstrahlröhreeinheitin die das vom BildschirmunerwünschtenStrahlungselektrischesfeld desKathoderstrahlröhrevermindert ist
    • EP0708474A1
    • 1996-04-24
    • EP95116440.9
    • 1995-10-18
    • HITACHI, LTD.
    • Jitsukata, HiroshiKawakami, KatsuyukiSakurai, SoichiYoshioka, HiroshiSatoh, Yoshio
    • H01J29/00
    • H01J29/003H01J2229/0015
    • A cathode-ray tube display unit provided with a high voltage transformer (20) for supplying high voltage to an anode of a cathode-ray tube (1), a deflection yoke (6) having a horizontal deflection coil and a vertical deflection coil, and an interior conductive coating (13) formed on the inside of a glass vessel of the cathode-ray tube (1), in which there is provided an electrode (8) in the conductive coating form formed on an external wall face of a glass vessel at a funnel portion (2) being electrically separated from an exterior graphite coating (5) formed on an external surface of the cathode-ray tube (1) and connected to ground, and a circuit for applying reverse pulse voltage V₁ that satisfies (V 0 × C 0 ) > (V 1 × C 1 ) to the electrode in the conductive coating form is included. Where, it is assumed that flyback pulse voltage supplied to the deflection yoke means (6) is V₀, reverse pulse voltage having a polarity reverse to that of voltage generated in the interior conductive coating (13) is V₁, electrostatic capacity between the horizontal deflection coil and the interior conductive coating (13) is C₀, and electrostatic capacity between the electrode (8) in the conductive coating form and the interior conductive coating (13) is C₁.
    • 一种阴极射线管显示单元,其具有用于向阴极射线管(1)的阳极提供高电压的高压变压器(20),具有水平偏转线圈和垂直偏转线圈的偏转线圈(6) 以及形成在阴极射线管(1)的玻璃容器的内部的内部导电涂层(13),其中设置有形成在玻璃的外壁面上的导电涂层形式的电极(8) 在漏斗部分(2)上的容器与形成在阴极射线管(1)的外表面上并与地连接的外部石墨涂层(5)电分离,以及用于施加反向脉冲电压V1的电路,其满足( V0 x C0)>(V1 x C1)与导电涂层形式的电极。 其中,假定提供给偏转线圈装置(6)的回扫脉冲电压为V0,具有与在内部导电涂层(13)中产生的电压相反的极性的反向脉冲电压为V1,水平偏转之间的静电电容 线圈和内部导电涂层(13)为C0,导电涂层形式的电极(8)和内部导电涂层(13)之间的静电电容为C1。
    • 4. 发明公开
    • Index type color picture reproducing apparatus
    • Strahlindexfarbfernsehbildwiedergabegerät。
    • EP0120134A1
    • 1984-10-03
    • EP83112830.1
    • 1983-12-20
    • HITACHI, LTD.
    • Inoue, FumioJitsukata, Hiroshi
    • H04N9/24
    • H04N9/24
    • An index type color picture reproducing circuit includes a phase detector (5) in which the phase difference between an index signal applied at the preset time and an index signal applied at the time earlier substantially by one horizontal scanning period than the former is detected to be converted into an output voltage indicative of the phase difference therebetween. A phase adjustment circuit (9) receives any one of the index signal, chrominance subcarrier signal and chrominance signal, and the phase of the input signal is changed depending on the output voltage of the phase detec- torthereby generating an indextype picture tube drive signal, so that a color picture with the normal hue can be reproduced even when a picture signal received has a horizontal scanning frequency different from the standard one.
    • 索引型彩色图像再现电路包括相位检测器(5),其中在预设时间处施加的索引信号与在前面基本上提前一个水平扫描周期的时间施加的索引信号之间的相位差被检测为 转换为表示它们之间的相位差的输出电压。 相位调整电路(9)接收索引信号,色度副载波信号和色度信号中的任何一个,并且输入信号的相位根据相位检测器的输出电压而改变,从而产生索引型显像管驱动信号, 使得即使当接收到的图像信号具有与标准色差不同的水平扫描频率时,也可以再现具有正常色调的彩色图像。