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公开(公告)号：EP0424111A3
公开(公告)日：1993-03-03
申请号：EP90311351.2
申请日：1990-10-17
申请人： SONY CORPORATION
摘要： Video signal processing apparatus is provided for use with a video camera (13) having a line scanning line period during which useful video information is provided and a flyback period during which an optical black signal level. Replacement black signal information that is a function of the optical black signal level is inserted (17) into a portion of the flyback period. When the camera (13) is of the type having a complementary colour matrix filter which produces odd and even raster scan lines of image pick-up signals with different modulation components, contour correction is provided. Modulation components in a scan line of image pick-up signals caused by the patterns of filter elements included in the matrix are removed (56), thereby producing an averaged scan line of image signals from which is extracted a signal component that is uncorrelated from one line to the next. Prior to such extraction, that portion of an averaged scan line of image signals which exceeds a predetermined level that is less than the lowest average level of a scan line of image signals which would saturate video processing circuitry (67, 69, 70) is clipped (61, 63, 65). The extracted, uncorrelated signal component is combined (73) with an averaged scan line of image signals to produce a contour-emphasized luminance signal.
摘要翻译： 视频信号处理设备被提供用于具有在其期间提供有用视频信息的行扫描行周期的视频相机（13）和在其间提供光学黑信号电平的回扫周期。 作为光学黑信号电平的函数的替换黑信号信息被插入（17）到回扫周期的一部分中。 当照相机（13）是具有产生具有不同调制分量的图像拾取信号的奇数和偶数光栅扫描行的补色矩阵滤波器的类型时，提供轮廓校正。 由矩阵中包括的滤波器元件的图案引起的图像拾取信号的扫描行中的调制分量被去除（56），由此产生图像信号的平均扫描线，从该图像信号中提取出与一个图像信号不相关的信号分量 行到下一个。 在这种提取之前，图像信号的平均扫描线的超过预定水平的那部分将被限幅，该预定水平小于将使视频处理电路（67,69,70）饱和的图像信号的扫描线的最低平均水平 （61,63,65）。 提取的不相关信号分量与图像信号的平均扫描线组合（73）以产生轮廓强调亮度信号。
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公开(公告)号：EP0519465A2
公开(公告)日：1992-12-23
申请号：EP92110300.8
申请日：1992-06-17
摘要： The present invention relates to a satellite television broadcasting receiver which receives waves from a satellite, selects a broadcasting office and obtains an FM demodulated video signal by passing a selected signal through the band-pass filter (6). In this satellite television broadcasting receiver, the video signal superposed with a large energy dispersion signal is inputted to the first clamping circuit (8) at a low level, to eliminate the energy dispersion signal. Thus, a room is provided in the dynamic range of the amplifier (9) at the later stage and the DG and DP of the amplifier (11) at the later stage are maintained at a satisfactory level by the second clamping circuit (10). As a result, even in the case of a satellite television broadcasting in which the level of the energy dispersion signal superposed on the video signal is large, distortion which occurs due to the nonlinearity of the amplifier can be reduced substantially so that the image can be reproduced on the screen in a satisfactory condition without an interference of flickering.
摘要翻译： 卫星电视广播接收机技术领域本发明涉及从卫星接收波的卫星电视广播接收机，通过通过带通滤波器（6）通过所选择的信号来选择广播局并获得FM解调的视频信号。 在该卫星电视广播接收机中，叠加有大能量色散信号的视频信号以低电平输入到第一钳位电路（8），以消除能量色散信号。 因此，在稍后阶段的放大器（9）的动态范围内提供一个房间，并且后一级的放大器（11）的DG和DP由第二钳位电路（10）保持在令人满意的水平。 结果，即使在其中叠加在视频信号上的能量色散信号的电平较大的卫星电视广播的情况下，也能够大大降低由于放大器的非线性引起的失真，从而可以使图像成为 在屏幕上以令人满意的状态再现而不受到闪烁的干扰。
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公开(公告)号：EP0512130A1
公开(公告)日：1992-11-11
申请号：EP91107187.6
申请日：1991-05-03
IPC分类号： H04N5/18
摘要： Das Gerät weist eine Synchronsignalabtrennstufe (17) mit einer Synchronisationseinrichtung (2) auf, der eine Klemmschaltung (4) mit nachgeschalteter Analog-Digital-Wandlereinrichtung (5), die einen vorgegebenen Aussteuerbereich aufweist, vorgeschaltet ist. Die Klemmschaltung (4) ist so ausgebildet, daß das Videosignal (FBAS) auf vorgegebene unterschiedliche Potentiale geklemmt werden kann. Durch die Steuereinrichtung (6) wird das Klemmen das Videosignales (FBAS) auf die vorgegebenen unterschiedlichen Potentiale so gesteuert, daß ein Synchronsignalanteil (Sy,BP) des Videosignales (FBAS) in den Aussteuerbereich der Analog-Digital-Wandlereinrichtung (5) gebracht wird.
摘要翻译： 该装置具有同步装置（2）的同步信号分离级（17），该同步装置（2）之前是钳位电路（4），之后是具有预定驱动范围的模拟/数字转换器装置（5）。 钳位电路（4）的构成使复合视频信号（FBAS）能够钳位到预定的不同电位。 控制器（6）控制将复合视频信号（FBAS）钳位到预定的不同电位，使得复合视频信号（FBAS）的同步信号分量（Sy，BP）在驱动范围内 模拟/数字转换器装置（5）。
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36.发明授权Verfahren zur Wiederherstellung des Gleichspannungswertes bei Videosignalen sowie Anordnung 失效在视频信号中恢复直流电压值的方法及其安排
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37.发明公开RGB video amplifier system integrating blanking and brightness control tracking 失效RGB-Videoverstärkersystemmit integrierter Folgung der Austast- und Helligkeitssteuerung。
公开(公告)号：EP0499354A1
公开(公告)日：1992-08-19
申请号：EP92300098.8
申请日：1992-01-07
发明人： Page, Ronald W.
摘要： A cathode ray tube driver circuit includes a video amplifier which is AC coupled to the video input and includes a DC reinsertion circuit (25,44) which clamps the DC bias at a level related to the composite video level immediately following the sync pulse. The DC reinsertion is clamped for each scanning line at the CRT black level. The video amplifier also includes a blanking circuit (35) which turns the tube off during the retrace interval. The driver circuit can drive the tuns of a three-colour tube in a manner that will simultaneously control their operation for the colour display and yet take into account manufacturing tolerances in individual characteristics of the guns.
摘要翻译： 阴极射线管驱动器电路包括视频放大器，该视频放大器AC耦合到视频输入，并且包括DC重新插入电路（25,44），其将DC偏压钳位在紧跟在同步脉冲之后的复合视频电平的相关级。 在CRT黑色电平处为每个扫描线夹紧DC重新插入。 视频放大器还包括消隐电路（35），其在回扫间隔期间使管断开。 驱动器电路可以以同时控制其颜色显示的操作并且考虑到枪的各个特性的制造公差的方式驱动三色管的管道。
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公开(公告)号：EP0370406A3
公开(公告)日：1991-07-17
申请号：EP89121314.2
申请日：1989-11-17
发明人： Nohara, Kazunori
IPC分类号： H04N5/18
CPC分类号： H04N5/18
摘要： The present invention provides a direct current restorer applied to a pedestal clamp circuit of a television receiver or the like, in which an input video signal is compared with a pedestal level setting reference signal for every pedestal period, and, based on difference between the pedestal level of the input video signal and the level of the reference signal, the direct current level of the input video signal is shifted. In this direct current restorer, a direct current according to the level variation of the reference signal may be superposed on the input video signal so that the direct current level of the input video signal is corrected according to the level variation of the reference signal. Accordingly, when adjusting the pedestal level or achieving a liquid crystal display in which the polarity of the input video signal is periodically inverted, a direct current according to the level variation of the reference signal may be superposed on the input video signal. Thus, the pedestal level of the input video signal may quickly follow the level variation of the reference signal and may be controlled to the level of the reference signal with no influence exerted onto the comparison in level of the input video signal with the reference signal. Accordingly, when this direct current restorer is applied to, for example, a drive circuit for a liquid crystal panel such as a liquid crystal television receiver or the like in which the input video signal is periodically changed in polarity, a stable direct current restoration may be achieved.
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公开(公告)号：EP0222481B1
公开(公告)日：1991-05-22
申请号：EP86307511.5
申请日：1986-10-01
发明人： Hinn, Werner
IPC分类号： H04N5/18
CPC分类号： H04N5/18
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