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75 条记录 (耗时 0.018 秒)

    Apparatus and method for correcting image distorsion in display device
    32.
    发明公开
    Apparatus and method for correcting image distorsion in display device 审中-公开
    Apparat und Verfahren zur Korrektur von Bildverzerrungen在einer Anzeigevorrichtung

    公开(公告)号：EP1761039A2

    公开(公告)日：2007-03-07

    申请号：EP06250582.1

    申请日：2006-02-03

    申请人： LG Electronics Inc.

    发明人： Bae, Sam Bong

    IPC分类号： H04N3/23

    CPC分类号： H04N3/2335 ,  G09G1/04

    摘要： An apparatus for correcting image distortion in a display device and method thereof facilitate enhanced image distortion correction includes a first memory storing at least one interpolation constant; a control unit for generating a predetermined number of image point signals; a device for outputting at least one drive signal, to correct distortion in an image point, by interpolating the input image point signals using the at least one interpolation constant; and at least one switching device for switching a drive control of a corresponding area of the image in response to a corresponding drive signal.
    The apparatus facilitates distortion correction in slim line CRT displays of wide deflection angle.
    Interpolation information is stored in a Field Programmable Gate Array controlled by an EEPROM, output signals passing via photocouplers.

    摘要翻译： 用于校正显示装置中的图像失真的装置及其方法有助于增强的图像失真校正包括存储至少一个内插常数的第一存储器; 用于产生预定数量的图像点信号的控制单元; 用于通过使用所述至少一个内插常数内插所述输入图像点信号来输出至少一个驱动信号以校正图像点中的失真的装置; 以及至少一个切换装置，用于响应于相应的驱动信号切换图像的相应区域的驱动控制。 该装置有助于在宽偏转角的细线CRT显示器中的畸变校正。 插补信息存储在由EEPROM控制的现场可编程门阵列中，通过光电耦合器输出信号。

    DIODE MODULATOR GENERATING A LINE S-CORRECTION
    33.
    发明授权
    DIODE MODULATOR GENERATING A LINE S-CORRECTION 失效
    二极管调制器用于产生LINE-S校正

    公开(公告)号：EP0870398B1

    公开(公告)日：2004-11-03

    申请号：EP97925242.6

    申请日：1997-06-25

    申请人： Koninklijke Philips Electronics N.V.

    发明人： BERGMANS, Christianus, Henricus, Jozef ,  NOOIJEN, Fransiscus, Martien, Johannes

    IPC分类号： H04N3/23

    CPC分类号： H04N3/27 ,  H04N3/237

    摘要： The invention provides a diode modulator circuit which is adapted to supply an acceptable S-correction of the S-linearity error of the line scanning of a picture tube (CRT) at substantially different line scan widths. A known diode modulator comprises two loops. The first loop comprises a series arrangement of a line deflection coil (LD) and an S-capacitor (CS), which series arrangement is arranged in parallel with a first flyback capacitor (CF1) and a first diode (D1). The second loop comprises a modulator coil (LB) arranged in parallel with a second flyback capacitor (CF2) and a second diode (D2). The two loops are arranged in series. An inner-pincushion capacitor (CSM) is arranged in a common path in which the line deflection current (Id) and a modulator current (Ib) flowing through the modulator coil (LB) flow in opposite directions. The amount of S-correction depends on the values of the S-correction capacitor (SC) and the inner-pincushion capacitor (CSM). The S-capacitor (CS) has been omitted in the diode modulator according to the invention. In this way, the amount of S-correction at minimal scan width will be zero because the common current (Im) flowing in the common path is zero if the diode modulator is in equilibrium. The diode modulator according to the invention can thus cope with picture tubes (CRT) which require a very low amount of S-correction at a small scan width without the need for an additional capacitor (CS2) and a thyristor switching circuit (T) to activate the additional capacitor (CS2) to lower the amount of S-correction at the small scan width. The invention is particularly useful if a continuous zoom between a 16/9 and a 4/3 scan width on a display tube with a 16/9 aspect ratio has to be performed in a simple way.

    VERTICAL DEFLECTION APPARATUS
    34.
    发明公开
    VERTICAL DEFLECTION APPARATUS 审中-公开
    垂直偏转装置

    公开(公告)号：EP1292122A1

    公开(公告)日：2003-03-12

    申请号：EP02703937.9

    申请日：2002-03-07

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： YAMATE, Kazunori

    IPC分类号： H04N3/23

    CPC分类号： H04N3/2335

    摘要： A parabolic modulation circuit multiples a horizontal parabolic signal and a vertical modulation signal together, to amplitude-modulate the horizontal parabolic signal using the vertical modulation signal, and modulates the phase of the horizontal parabolic signal on the basis of the vertical modulation signal, to output the modulated horizontal parabolic signal to a correction current output amplifier. When an NS pincushion distortion on a screen of a CRT is asymmetrical, a horizontal parabolic signal generation circuit is so set as to generate an asymmetrical horizontal parabolic signal. A gull-wing distortion can be corrected by adjusting the value of n in an n-th power waveform generator in the horizontal parabolic signal generation circuit.

    摘要翻译： 抛物线调制电路一起倍增水平抛物线信号和垂直调制信号，以使用垂直调制信号对水平抛物线信号进行幅度调制，并基于垂直调制信号调制水平抛物线信号的相位，以输出 调制的水平抛物线信号送到校正电流输出放大器。 当CRT屏幕上的NS枕形失真不对称时，设置水平抛物线信号发生电路以产生不对称的水平抛物线信号。 鸥翼失真可以通过调整水平抛物线信号发生电路中第n个功率波形发生器中的n值来校正。

    COLOR DISPLAY DEVICE INCLUDING LANDING-CORRECTION MEANS
    35.
    发明授权
    COLOR DISPLAY DEVICE INCLUDING LANDING-CORRECTION MEANS 失效
    与安排彩色显示装置，纠正错误的着陆

    公开(公告)号：EP0797837B1

    公开(公告)日：2002-01-16

    申请号：EP96926535.4

    申请日：1996-08-26

    申请人： Koninklijke Philips Electronics N.V.

    发明人： JAMAR, Jacobus, Hubertus, Theodoor

    IPC分类号： H01J29/70 ,  H01J29/76 ,  H04N3/23

    CPC分类号： H01J29/705 ,  H01J2229/5687 ,  H01J2229/7037 ,  H04N9/28

    摘要： Color display device comprising a shadow mask and means for correcting landing-errors. The correction means comprise first and second correction deflection devices which are arranged one behind the other in the direction of the electron beams and are energizable in opposite senses so that the first correction deflection device generates a dipole field deflecting the three electron beams away from the longitudinal tube axis, and the second correction deflection device generates a dipole field deflecting the three electron beams towards the longitudinal tube axis, or conversely. In an alternative embodiment the correction means comprise means to advance or delay the video signal to the Source of the electron beams.

    Gullwing distortion correction circuit
    40.
    发明公开
    Gullwing distortion correction circuit 失效
    Schaltung zur Korrektur derMöwenflügelverzerrung。

    公开(公告)号：EP0284348A1

    公开(公告)日：1988-09-28

    申请号：EP88302504.1

    申请日：1988-03-22

    申请人： RCA Thomson Licensing Corporation

    发明人： Leonardi, Giovanni Michele

    IPC分类号： H04N3/23

    CPC分类号： H04N3/233

    摘要： In a televison picture tube deflection apparatus a gullwing distortion correction signal (V gc ) and a north-south pincushion distortion correction signal (V pc ) are generated and then summed to form a sum signal (V gp ). The sum signal is coupled to a primary winding (W₁) of a transformer (T). A secondary winding (W₂) of the transformer (T) is coupled in a current path of a vertical rate deflection current (i V ) for modulating the deflection current in a manner that reduces the gullwing and north-south pincushion distortions. The secondary winding (W₂) is included in a resonant circuit (63) that is tuned to resonate at the horizontal frequency.

    摘要翻译： 在电视显像管偏转装置中，生成鸥翼畸变校正信号（Vgc）和南北枕形失真校正信号（Vpc），然后求和以形成和信号（Vgp）。 和信号耦合到变压器（T）的初级绕组（W1）。 变压器（T）的次级绕组（W2）以垂直速率偏转电流（iV）的电流通路耦合，用于以减小鸥翼和南北枕形失真的方式调制偏转电流。 次级绕组（W2）包括在调谐为以水平频率谐振的谐振电路（63）中。