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公开(公告)号：EP1072152A1
公开(公告)日：2001-01-31
申请号：EP00902962.0
申请日：2000-02-15
IPC分类号： H04N5/12
摘要： A phase controller of a horizontal drive pulse fed into a horizontal deflection circuit supplying a horizontal deflection pulse, and a control method of the same are disclosed. A frequency discriminator identifies a format of video-input-signal by detecting a frequency of the horizontal sync signal. A reference phase generator generates a reference phase signal based on the output from the frequency discriminator. A sawtooth waveform generator generates a sawtooth waveform signal responsive to the output from the frequency discriminator. A phase difference voltage detector outputs a phase difference voltage responsive to the phase difference between the reference phase signal and the horizontal deflection pulse. A phase control signal generator generates a phase control signal using the phase difference voltage and the sawtooth waveform signal. Horizontal drive pulse generator outputs a horizontal drive pulse having a phase responsive to the phase control signal. The phase controller and the phase control method as structured above realize a stable phase control of the horizontal drive pulses in video display devices.
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公开(公告)号：EP1081965A1
公开(公告)日：2001-03-07
申请号：EP00906703.4
申请日：2000-03-06
CPC分类号： H04N9/66
摘要： A color demodulation apparatus having color demodulation capabilities as the conventional ones, with its size reduced by sharing part of processing circuit therein is provided.
An adder circuit 10 and a SW circuit 11 shift the phase of a ramp wave generated by a VCO circuit 9 alternately 90 degrees and 180 degrees for each clock. A SIN data generator circuit 12 generates a phase alternate SIN wave signal from the shifted ramp wave. A multiplier circuit 3 performs R-Y and B-Y demodulation through multiplexing based on the phase alternate SIN wave signal. An accumulator circuit 6 accumulates burst signals of each of R-Y and B-Y signals of the demodulated, multiplexed signal. A second load hold circuit 8 separately outputs an R-Y burst signal to the VCO circuit 9, and a B-Y burst signal to a comparator circuit 13, constituting two feedback loops. A first load hold circuit 5 separates R-Y and B-Y signals from the multiplexed signal, and outputs these two signals.摘要翻译： 提供一种具有常规色彩解调能力的彩色解调装置，其尺寸通过在其中共享部分处理电路而减小。 加法器电路10和SW电路11对于每个时钟将由VCO电路9产生的斜波的相位交替地偏移90度和180度。 SIN数据生成器电路12从移位的斜波生成相位交替的SIN波信号。 乘法器电路3基于相位交替SIN波信号通过多路复用进行R-Y和B-Y解调。 累加器电路6累加解调后的多路复用信号的R-Y和B-Y信号的每一个的突发信号。 第二负载保持电路8分别向VCO电路9输出R-Y突发信号，并向比较器电路13输出B-Y突发信号，构成两个反馈回路。 第一负载保持电路5从复用信号中分离R-Y和B-Y信号，并输出这两个信号。
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公开(公告)号：EP1445943A1
公开(公告)日：2004-08-11
申请号：EP02778039.4
申请日：2002-11-01
发明人： MORIBE, Hiroshi , TAKETANI, Nobuo , SHIBUTANI, Ryuichi , TAKESHIMA, Masahiro , MORITA, Hisao , ANDO, Hiroshi , MATSUHIRA, Koji
IPC分类号： H04N3/223
CPC分类号： H04N3/223
摘要： The vertical/horizontal amplitude control device for controlling a vertical amplitude and a horizontal amplitude of an image display device for displaying a video signal includes a brightness level detector for detecting a brightness level of the video signal, a vertical amplitude controller for controlling the vertical amplitude based on the brightness level, and a horizontal amplitude controller for controlling the horizontal amplitude based on the brightness level. The device controls the vertical and horizontal amplitudes into constant without a delay from a change of a video signal even when the brightness level of the video signal abruptly changes.
摘要翻译： 用于控制用于显示视频信号的图像显示装置的垂直幅度和水平振幅的垂直/水平幅度控制装置包括用于检测视频信号的亮度级的亮度电平检测器，用于控制垂直幅度的垂直幅度控制器 并且基于亮度水平控制水平振幅的水平振幅控制器。 即使当视频信号的亮度级别突然改变时，该装置将垂直和水平幅度控制为恒定而不会影响视频信号的改变。
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公开(公告)号：EP1181819B1
公开(公告)日：2007-12-05
申请号：EP00925674.4
申请日：2000-05-16
CPC分类号： H04N5/455 , H04N5/46 , H04N9/68 , H04N11/186
摘要： The color signal reproducing apparatus of the invention is composed of multipliers (104, 105) for issuing X- and Y-axis signals by multiplying the color subcarrier signal of SECAM composite video signal by SIN component or COS component of local subcarrier signal, an ACC control voltage generator (106) for generating an ACC control signal by squaring and adding the X- and Y-axis signals in the burst gate pulse period, and a gain controller (102) for adjusting the amplitude of color subcarrier, and is constructed to control the gain controller by its ACC control signal. While using the color signal reproducing circuit commonly in three major television systems in the world, ACC of high precision is realized even in the case where the S/N state of SECAM color subcarrier signal is lowered.
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公开(公告)号：EP1081965B1
公开(公告)日：2006-12-13
申请号：EP00906703.4
申请日：2000-03-06
CPC分类号： H04N9/66
摘要： A color demodulating device having a reduced device scale by commonly using part of a processing circuit and having a performance on color demodulation equivalent to that of the prior art. An adding circuit (10) and a SW circuit (11) shifts the phase of the ramp waveform generated by a VCO circuit (9) alternately to 90 degrees and 180 degrees for every clock. A SIN data generating circuit (12) generates a phase alternating SIN wave signal from the phase-shifted ramp waveform. A multiplying circuit (3) carries out multiplexing for R-Y and B-Y demodulations on the basis of the phase alternating SIN wave signal. A cumulative adding circuit (6) adds burst signals cumulatively for the demodulated multiplexed R-Y signal and the B-Y signal. A second load holding circuit (8) outputs the R-Y burst signal and the B-Y burst signal separately and respectively to the VCO circuit (9) and a comparing circuit (13) to form feedback loops. A first load holding circuit (5) separates the R-Y signal and the B-Y signal from the multiplexed signal and outputs them.
摘要翻译： 通过共同使用处理电路的一部分并具有与现有技术等同的彩色解调性能的彩色解调装置具有减小的装置规模。 加法电路（10）和SW电路（11）将由VCO电路（9）产生的斜坡波形的相位交替地每时钟移动90度和180度。 SIN数据生成电路（12）根据相移斜坡波形生成相位交替SIN波信号。 乘法电路（3）根据相位交变SIN波信号对R-Y和B-Y解调进行多路复用。 累加电路（6）为解调的复用R-Y信号和B-Y信号累加色同步信号。 第二负载保持电路（8）分别将R-Y突发信号和B-Y突发信号分别输出到VCO电路（9）和比较电路（13）以形成反馈回路。 第一负载保持电路（5）从复用信号中分离出R-Y信号和B-Y信号并将它们输出。
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公开(公告)号：EP1072152B1
公开(公告)日：2004-09-08
申请号：EP00902962.0
申请日：2000-02-15
IPC分类号： H04N5/12
摘要： A phase controller of a horizontal drive pulse fed into a horizontal deflection circuit supplying a horizontal deflection pulse, and a control method of the same are disclosed. A frequency discriminator identifies a format of video-input-signal by detecting a frequency of the horizontal sync signal. A reference phase generator generates a reference phase signal based on the output from the frequency discriminator. A sawtooth waveform generator generates a sawtooth waveform signal responsive to the output from the frequency discriminator. A phase difference voltage detector outputs a phase difference voltage responsive to the phase difference between the reference phase signal and the horizontal deflection pulse. A phase control signal generator generates a phase control signal using the phase difference voltage and the sawtooth waveform signal. Horizontal drive pulse generator outputs a horizontal drive pulse having a phase responsive to the phase control signal. The phase controller and the phase control method as structured above realize a stable phase control of the horizontal drive pulses in video display devices.
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公开(公告)号：EP1181819A1
公开(公告)日：2002-02-27
申请号：EP00925674.4
申请日：2000-05-16
CPC分类号： H04N5/455 , H04N5/46 , H04N9/68 , H04N11/186
摘要： The color signal reproducing apparatus of the invention is composed of multipliers (104, 105) for issuing X- and Y-axis signals by multiplying the color subcarrier signal of SECAM composite video signal by SIN component or COS component of local subcarrier signal, an ACC control voltage generator (106) for generating an ACC control signal by squaring and adding the X- and Y-axis signals in the burst gate pulse period, and a gain controller (102) for adjusting the amplitude of color subcarrier, and is constructed to control the gain controller by its ACC control signal. While using the color signal reproducing circuit commonly in three major television systems in the world, ACC of high precision is realized even in the case where the S/N state of SECAM color subcarrier signal is lowered.
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