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1.发明公开Horizontal distortion correction circuit and display apparatus containing the same 审中-公开一种用于水平图像失真的校正和含有相同的图像显示设备的设备
公开(公告)号：EP1681847A1
公开(公告)日：2006-07-19
申请号：EP05000479.5
申请日：2005-01-12
申请人： VIDEOCOLOR S.p.A.
IPC分类号： H04N3/233
CPC分类号： H04N3/233
摘要： A horizontal distortion correction circuit and a display apparatus containing the same are disclosed. The power supply unit has a first group of components for having the complete voltage drop across the first capacitor and a second group of components for rectifying and clamping the voltage produced by the power supply unit; the driving unit has a first driving part and a second driving part for turning on and turning off said switch unit respectively; the control unit has a third group of components for taking the voltage across the first capacitor and a fourth group of components as peak detector for only having the East-West parabolic signal across the first capacitor.
摘要翻译： 的水平失真校正电路和含有其的显示装置是游离缺失光盘。 所述电源单元具有用于具有横跨所述第一电容器和用于整流和夹紧通过所述电源单元产生的电压分量的第二组的完整的电压降的第一组组件; 所述驱动单元具有第一驱动部分和用于接通和分别关断所述开关单元的第二驱动部分; 所述控制单元具有用于取电压跨过第一电容器和部件作为峰值检测器的第四组为只具有横跨所述第一电容器的东 - 西抛物波信号的第三组的组件。
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公开(公告)号：EP0985314B1
公开(公告)日：2006-04-12
申请号：EP99900600.0
申请日：1999-01-28
IPC分类号： H04N3/233
CPC分类号： H04N3/233
摘要： A display monitor operating under the raster scanning system repeats the line scanning of an electron beam by moving the resulting scanning lines in a direction substantially perpendicular to the line direction. In a cathode ray tube (CRT), the dot pitch of the fluorescent material on the display screen (DS) of the cathode ray tube (CRT) that can emit light is determined by the aperture pitch of the shadow mask. Thus, when displaying a video pattern (f1h) in which consecutive pixels in a line are repeated in an ON and OFF sequence, interference with the aperture pitch of the shadow mask may occur, thereby causing a moire. The moire phenomenon is reduced with a notch filter (NF) which has a passband for baseband video frequencies (f1h) and which has a notch in the amplitude characteristic as a spatial frequency a) at or near to a spatial frequency of dots (fdh or fhh) on the display screen (DS), or b) at or near to a predetermined spatial higher harmonic (f2h, f4h) of the baseband video (f1h) which is near to said spatial frequency of the dots (fdh or fhh).
摘要翻译： 在光栅扫描系统下工作的显示监视器通过在基本上垂直于行方向的方向上移动所得到的扫描行来重复电子束的行扫描。 在阴极射线管（CRT）中，能发光的阴极射线管（CRT）的显示屏（DS）上的荧光材料的点距由荫罩的孔径间距确定。 因此，当显示以ON和OFF序列重复行中的连续像素的视频图案（f1h）时，可能发生对荫罩的光圈间距的干扰，从而导致莫尔条纹。 利用陷波滤波器（NF）减少莫尔现象，该陷波滤波器具有用于基带视频频率（f1h）的通带，并且在幅度特性中具有作为空间频率a）处的点的空间频率（fdh）或空间频率附近 fhh），或b）接近所述点（fdh或fhh）的所述空间频率的基带视频（f1h）的预定空间高次谐波（f2h，f4h）或其附近。
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3.发明授权
公开(公告)号：EP1021915B1
公开(公告)日：2003-03-19
申请号：EP97910884.2
申请日：1997-10-10
摘要： An electron beam tends to slope downwardly as it is deflected horizontally to form a raster in a video display apparatus. The sloping of the beam can cause geometric errors in the raster, for example orthogonality and parallelogram errors. A raster correction circuit substantially offsets the downward slop of the electron beam by modulating a vertical deflection current (IV) with an induced horizontal-rate raster correction current, thereby substantially eliminating orthogonality and parallelogram errors in the raster. A raster correction transformer (41) utilizes a raster centering inductor (LC) for a primary winding, and a horizontal-rate centering current (IC) is magnetically coupled into the vertical deflection coils (LV1, LV2) to modulate the vertical deflection current.
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公开(公告)号：EP1289277A3
公开(公告)日：2003-03-12
申请号：EP02016581.7
申请日：2002-07-25
发明人： Weber, Rudolf
IPC分类号： H04N3/233
CPC分类号： H04N3/233
摘要： A horizontal deflection circuit output stage includes a trace capacitor (CS) for developing a trace voltage (VCS). A retrace capacitance (C2) is coupled to a deflection winding (Ly) to form a retrace resonant circuit with the deflection winding, during a retrace interval of a deflection cycle. A rectifier (D3) for rectifying a retrace pulse voltage (VC2) developed in the retrace capacitance. A switching transistor (Q2) is coupled to an inductance (L1) and to the trace capacitor for applying the rectified retrace pulse voltage to the inductance to generate a current (IL1) in the inductance. The inductance current is coupled to the trace capacitor, during the trace interval, to provide for linearity correction. The rectifier is coupled to the switching transistor for producing a rectified control signal (V6) at a control terminal (GATE) of the switching transistor to cause a change of state in the switching transistor, during the retrace interval.
摘要翻译： 水平偏转电路输出级包括用于产生迹线电压（VCS）的迹线电容器（CS）。 在偏转周期的回扫期间，回扫电容（C2）与偏转绕组（Ly）耦合以与偏转绕组形成回扫谐振电路。 整流器（D3）用于对回扫电容中产生的回扫脉冲电压（VC2）进行整流。 开关晶体管（Q2）耦合到电感（L1）和跟踪电容器，用于将整流的回扫脉冲电压施加到电感以在电感中产生电流（IL1）。 在跟踪间隔期间，电感电流被耦合到迹线电容器，以提供线性校正。 整流器耦合到开关晶体管，用于在开关晶体管的控制端（GATE）产生整流控制信号（V6），以在回扫期间引起开关晶体管的状态变化。
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公开(公告)号：EP1287682A1
公开(公告)日：2003-03-05
申请号：EP01943425.7
申请日：2001-05-22
发明人： DIETERLE, Franz , VOGEL, Stefan
摘要： In the event of a change of the picture aspect ratio, for example for reproduction of a picture with 4:3 on a screen with 16:9, it is desirable that this S correction be reduced or completely switched off in order that stretching deliberately occurs at the left-hand and right-hand edges of the picture. This is achieved by a series resonant circuit having an inductance (L1) and a capacitance (C1) which can be connected in parallel with the S capacitor (CS1). This network changes the voltage (UC) across the S capacitor (CS1) in such a way that the S correction appreciably decreases and desirable line stretching occurs at the left-hand and right-hand edges of the picture.
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公开(公告)号：EP0934650B1
公开(公告)日：2002-09-04
申请号：EP97912832.9
申请日：1997-10-10
IPC分类号： H04N3/233
CPC分类号： H04N3/233
摘要： A circuit (410) for providing an output voltage (VP) to a pincushion modulator circuit. The circuit includes an amplifier (510) having an input for receiving an input signal (Vi). The amplifier amplifies the input signal to produce the output voltage at an output of the amplifier which is coupled to an input (520) of the pincushion modulator circuit. A compensation path (Cf) eliminates instability at frequecies above a first frequency caused by interaction between the amplifier and the pincushion modulator circuit.
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公开(公告)号：EP0740461B1
公开(公告)日：2002-08-07
申请号：EP96106584.4
申请日：1996-04-26
发明人： George, John Barrett
IPC分类号： H04N3/233
CPC分类号： H04N3/233
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公开(公告)号：EP0682443B1
公开(公告)日：2001-08-01
申请号：EP95106536.6
申请日：1995-04-29
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9.发明公开
公开(公告)号：EP1021915A1
公开(公告)日：2000-07-26
申请号：EP97910884.2
申请日：1997-10-10
摘要： An electron beam tends to slope downwardly as it is deflected horizontally to form a raster in a video display apparatus. The sloping of the beam can cause geometric errors in the raster, for example orthogonality and parallelogram errors. A raster correction circuit substantially offsets the downward slop of the electron beam by modulating a vertical deflection current (IV) with an induced horizontal-rate raster correction current, thereby substantially eliminating orthogonality and parallelogram errors in the raster. A raster correction transformer (41) utilizes a raster centering inductor (LC) for a primary winding, and a horizontal-rate centering current (IC) is magnetically coupled into the vertical deflection coils (LV1, LV2) to modulate the vertical deflection current.
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公开(公告)号：EP0999699A1
公开(公告)日：2000-05-10
申请号：EP99921263.2
申请日：1999-05-25
申请人： Sony Corporation
发明人： KIKUCHI, Ken , WATANABE, Junzo , HONJI, Hidetaka , OTAKI, Susumu
摘要： This invention is directed to a circuit for permitting stable operation of horizontal deflection output, and comprises: a first parallel circuit P1 composed of a first switching element 11, a first damper diode 12 and a first resonance capacitor 13; a second parallel circuit P2 composed of a second switching element 21, a second damper diode 22 and a second resonance capacitor 23; a horizontal deflection yoke 2 connected to the second parallel circuit P2; a flyback transformer 1; an integration circuit 16 operative to synthesize pulses from the first and second parallel circuits P1, P2 to generate deflection current and to integrate inputted horizontal deflection drive signal; first and second comparison·latch circuits 17, 27 for respectively comparing signal from the integration circuit 16 with first and second levels to latch comparison results; first and second drive circuits 19, 29 for respectively driving the first and second switching elements 11, 21; and a control element for controlling the second level.
摘要翻译： 本发明涉及一种用于允许水平偏转输出的稳定操作的电路，包括：由第一开关元件11，第一阻尼二极管12和第一谐振电容器13构成的第一并联电路P1; 由第二开关元件21，第二阻尼二极管22和第二谐振电容器23组成的第二并联电路P2; 连接到第二并联电路P2的水平偏转线圈2; 回扫变压器1; 积分电路16，用于合成来自第一和第二并联电路P1，P2的脉冲，以产生偏转电流并整合输入的水平偏转驱动信号; 用于将来自积分电路16的信号与第一和第二电平分别比较以锁存比较结果的第一和第二比较分路电路17,27; 用于分别驱动第一和第二开关元件11,21的第一和第二驱动电路19,29; 以及用于控制第二级的控制元件。
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