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    • 1. 发明公开
    • CRT DISPLAY IMAGE HORIZONTAL DISTORTION CORRECTION DEVICE
    • VORRICHTUNG ZUR KORREKTUR HORIZONTALERBILDSTÖRUNGENEINERKATHODENSTRAHLRÖHREN-ANZEIGE
    • EP0997867A4
    • 2005-08-24
    • EP99921213
    • 1999-05-20
    • MATSUSHITA ELECTRIC IND CO LTD
    • HIRAKAWA HARUYASU
    • G09G1/04H04N3/22H04N3/233G09G1/00H04N3/23
    • H04N3/22G09G1/04H04N3/233
    • A horizontal distortion correction device, in a CRT display unit, for controlling the phase of a horizontal deflection current by applying a residual phase to correct the horizontal distortion of an image; specifically, a horizontal distortion correction device (HDCp) for correcting the horizontal distortion of an image caused by an inaccurate assembling of a CRT display unit, including a PLL (14) that supplies a horizontal deflection current (Ihd) to a horizontal drive coil (19), wherein a distortion correction waveform generator (100) is operated by a user to apply a waveform signal (Sw) with a desired waveform to the PLL (14), give a residual phase to the horizontal deflection current (Ihd) and control that phase.
    • 在CRT显示装置中,提供水平失真校正装置,用于通过施加残余相位来控制水平偏转电流的相位来校正图像的水平失真。 水平失真校正装置(HDCp)根据包括在视频信号(Si)中的水平同步信号,通过扫描视频信号(Si)来校正由用于显示图像的CRT显示装置的组装错误导致的图像的水平失真 )。 水平失真校正装置(HDCp)包括向视频信号控制器(12)提供水平偏转电流(Ihd)的PLL(14),用于在CRT上显示图像。 失真校正波形发生器(100)被用户扫描,向PLL(14)施加具有期望波形的波信号(Sw),以提供水平偏转电流(Ihd)的相位,以控制其相位 。 结果,在CRT显示装置上显示没有水平失真的图像。
    • 2. 发明公开
    • DEFLECTION SUPPLY VOLTAGE FEEDBACK CONTROL IN CONJUNCTION WITH FREQUENCY CHANGE
    • 连续变频偏压供电电压反馈控制
    • EP1497909A2
    • 2005-01-19
    • EP03718401.7
    • 2003-04-16
    • Thomson Licensing S.A.
    • CHOKSI, SnehalGRIES, Robert, JosephWILLIAMS, Kevin, MichaelJACKSON, David, RossWATSON, Robert, Goah, III
    • H02M3/335G09G1/04H01J29/70
    • H04N5/63H04N3/223H04N3/27
    • A video display (10) includes a scanner (100) operable at a first frequency (H1) and a higher second frequency (H2). A switchmode power supply (SMPS) (32) drives a transformer (T1) with three secondaries (T1S1b, T1S1a and T1S2). First and second rectifiers & filters ((CR107, CR108) and (F101, F102)) are associated with the first and second secondaries. A rectifier is coupled to the third secondary (T1S1b) and by way of a switch (K2) to the first filter (F101). Feedback from the first filter (F101) controls the SMPS (32). In a first operating mode, the scanner (100) is operated at the first frequency, the switch is open, the scanner supply (SCAN +) is a first voltage from the first filter (F101), and ancillary equipment is supplied with a third voltage by the second filter (F102). In a second operating mode, the scanner (100) is operated at the second frequency, the switch (K2) is closed, the scanner supply (SCANB +) is a second voltage, higher than the first, from the first filter (F101), and ancillary equipment is supplied with the same third voltage.
    • 视频显示器(10)包括以第一频率(H1)和较高的第二频率(H2)操作的扫描仪(100)。 开关模式电源(SMPS)(32)以三个次级(T1S1b,T1S1a和T1S2)驱动变压器(T1)。 第一和第二整流器和滤波器((CR107,CR108)和(F101,F102))与第一和第二副滤波器相关联。 整流器通过开关(K2)连接到第三次级(T1S1b)并连接到第一滤波器(F101)。 来自第一滤波器(F101)的反馈控制SMPS(32)。 在第一操作模式中,扫描仪(100)以第一频率操作,开关打开,扫描仪电源(SCAN +)是来自第一滤波器(F101)的第一电压,并且辅助设备被提供有第三频率 由第二滤波器(F102)提供电压。 在第二操作模式中,扫描器(100)以第二频率操作,开关(K2)闭合,扫描器电源(SCANB +)是来自第一滤波器(F101)的高于第一电压的第二电压, ,并且辅助设备被提供相同的第三电压。
    • 3. 发明公开
    • FOCUS VOLTAGE AMPLIFIER
    • FOCUS电压放大器
    • EP1497815A2
    • 2005-01-19
    • EP03741765.6
    • 2003-04-21
    • Thomson Licensing S.A.
    • GEORGE, John, Barrett
    • G09G1/04
    • H04N3/26
    • A dynamic focus amplifier (17) for generating a dynamic focus voltage for a focus electrode for a cathode ray tube (12) at a capacitive load (C602, C wire, CTl) includes a source of a periodic signal at a horizontal deflection frequency. A pull­down transistor (Q1) is responsive to the periodic signal and coupled to the capacitive load (C602, C wire, CTl) for producing, in accordance with the periodic signal, a first portion of the dynamic focus voltage that decreases, during a first portion of a period of the periodic signal. A storage capacitor (C501) is coupled to the capacitive load (C602, C wire, CTl) for replenishing a charge stored in the storage capacitor (C501) from a charge stored in the capacitive load to develop a control voltage in the storage capacitor (C501). A pull-up transistor is responsive to the control voltage and coupled to a source of a high voltage and to the capacitive load (C602, C wire, CTl) for producing from the high voltage a current that is coupled to the capacitive load. The current develops a second portion of the dynamic focus voltage that increases, during a second portion of the period of the periodic signal, and stores the charge in the capacitive load (C602, C wire, CTl).
    • 7. 发明公开
    • A cathode-ray tube system capable of providing beam spots of a small diameter
    • Kathodenstrahlrohrsystem mitMöglichkeitzur Erzeugung eines Strahlflecks mit einem kleinen Diameter
    • EP1059624A2
    • 2000-12-13
    • EP00304732.1
    • 2000-06-05
    • Matsushita Electronics Corporation
    • Sakurai, Hiroshi
    • G09G1/04
    • G09G1/04G09G2340/0407H04N3/26H04N5/68
    • A signal is sent to a deflection circuit and a video signal processing circuit. On receiving the signal, the deflection circuit outputs a vertical deflection signal and a horizontal deflection signal. The vertical deflection signal is sent directly to a deflection yoke while the horizontal deflection signal is sent via an S-shaped wave modulation circuit to the deflection yoke. On the other hand, the video signal processing circuit receives the signal and outputs a video signal via an amplitude modulation circuit and a frequency modulation circuit to a cathode of an electron gun. The S-shaped wave modulation circuit performs modulation on the horizontal deflection signal to change scanning speed. The amplitude modulation circuit and the frequency modulation circuit perform, on the video signal, amplitude modulation and frequency modulation which are appropriate for this speed.
    • 信号被发送到偏转电路和视频信号处理电路。 在接收到信号时,偏转电路输出垂直偏转信号和水平偏转信号。 垂直偏转信号直接发送到偏转线圈,而水平偏转信号通过S形波形调制电路发送到偏转线圈。 另一方面,视频信号处理电路接收该信号,并通过振幅调制电路和频率调制电路将视频信号输出到电子枪的阴极。 S形波调制电路对水平偏转信号进行调制以改变扫描速度。 幅度调制电路和频率调制电路对视频信号执行适合该速度的幅度调制和频率调制。