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    • 3. 发明授权
    • Switching apparatus for horizontal driving pulse
    • 水平驱动脉冲开关装置
    • US06404148B1
    • 2002-06-11
    • US09690053
    • 2000-10-16
    • Hiroshi MoribeNobuo TaketaniHisao MoritaRyuichi ShibutaniHiroshi AndoMasahiro Takeshima
    • Hiroshi MoribeNobuo TaketaniHisao MoritaRyuichi ShibutaniHiroshi AndoMasahiro Takeshima
    • G09G104
    • H04N5/12
    • In a horizontal deflection circuit, a waveform response of a horizontal output pulse must be adequately taken into account before and after a switching of the horizontal output pulse so that the waveform does not lack in shape and does not lose continuity at the switching. A switching apparatus for a horizontal driving apparatus includes (a) a horizontal driving pulse generator which generates a horizontal driving pulse from a horizontal synchronization signal, (b) an alternative signal generator which outputs an alternative signal different from the horizontal driving pulse, (c) a horizontal output control device which determines a timing to switch between the horizontal driving pulse and the alternative signal, and (d) a switching device which switches an output pulse with a control signal which is output from the horizontal output control device. The switching device switches only when both the output signal from the horizontal driving pulse generator and the output signal from the alternative signal generator change from a low level to a high level at the same time.
    • 在水平偏转电路中,在水平输出脉冲的切换之前和之后,必须充分考虑水平输出脉冲的波形响应,使得波形不缺少形状,并且在切换时不失去连续性。 一种用于水平驱动装置的开关装置包括:(a)水平驱动脉冲发生器,其从水平同步信号产生水平驱动脉冲,(b)替代信号发生器,其输出与水平驱动脉冲不同的替代信号,(c )水平输出控制装置,其确定在水平驱动脉冲和替代信号之间切换的定时,以及(d)利用从水平输出控制装置输出的控制信号切换输出脉冲的开关装置。 只有来自水平驱动脉冲发生器的输出信号和来自替代信号发生器的输出信号同时从低电平变化到高电平时,开关器件才切换。
    • 6. 发明授权
    • Phase controller of horizontal drive pulse and method of the same
    • 水平驱动脉冲相位控制器和方法相同
    • US06597404B1
    • 2003-07-22
    • US09623258
    • 2000-12-11
    • Hiroshi MoribeNobuo TaketaniHisao MoritaHiroshi AndoRyuichi Shibutani
    • Hiroshi MoribeNobuo TaketaniHisao MoritaHiroshi AndoRyuichi Shibutani
    • H03L700
    • H04N5/126H04N5/46
    • 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.
    • 公开了供给水平偏转脉冲的水平偏转电路的水平驱动脉冲的相位控制器及其控制方法。 频率鉴别器通过检测水平同步信号的频率来识别视频输入信号的格式。 参考相位发生器基于来自鉴频器的输出产生参考相位信号。 锯齿波形发生器响应于来自鉴频器的输出产生锯齿波形信号。 相位差电压检测器响应于参考相位信号和水平偏转脉冲之间的相位差输出相位差电压。 相位控制信号发生器使用相位差电压和锯齿波形信号产生相位控制信号。 水平驱动脉冲发生器输出具有响应于相位控制信号的相位的水平驱动脉冲。 上述相位控制器和相位控制方法实现了视频显示装置中水平驱动脉冲的稳定相位控制。
    • 7. 发明授权
    • Color demodulating device
    • 彩色解调装置
    • US06567129B1
    • 2003-05-20
    • US09674845
    • 2000-11-07
    • Nobuo TaketaniHiroshi MoribeHisao MoritaHiroshi AndoRyuichi Shibutani
    • Nobuo TaketaniHiroshi MoribeHisao MoritaHiroshi AndoRyuichi Shibutani
    • H04N966
    • H04N9/66
    • 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.
    • 提供具有常规颜色解调能力的彩色解调装置,其中通过共享部分处理电路而减小其尺寸。加法器电路10和SW电路11交替地移位由VCO电路9产生的斜波的相位 每个时钟90度和180度。 SIN数据生成电路12从移位斜坡波生成相位交替SIN波信号。 乘法器电路3通过基于相位交替SIN波信号的复用来执行R-Y和B-Y解调。 累加器电路6累积解调复用信号的R-Y和B-Y信号中的每一个的脉冲信号。 第二负载保持电路8分别向VCO电路9输出R-Y突发信号,并将B-Y突发信号输出到比较器电路13,构成两个反馈回路。 第一负载保持电路5将R-Y和B-Y信号与多路复用信号分离,并输出这两个信号。
    • 10. 发明授权
    • Color television system determination circuit
    • 彩色电视系统确定电路
    • US06172713B2
    • 2001-01-09
    • US08988027
    • 1997-12-10
    • Hisao Morita
    • Hisao Morita
    • H04N538
    • H04N9/642Y10S348/912
    • A color system determination circuit for use with an input video signal having a frequency component is disclosed. The circuit includes a color trap filter for attenuating the frequency component in the input video signal with the color trap filter providing a color burst output signal, a comparator for comparing the color burst output signal of the color trap filter and the frequency component of the input video signal, a maximum value detector which receives the color burst output signal of the color trap filter and a color burst sampling signal and detects a maximum value of the color burst output signal of the color trap filter during a period of the color burst sampling signal, and another maximum value detector which receives the video signal and the color burst sampling signal and detects a maximum value of the video signal during the period of the color burst sampling signal. The comparator receives output signals of the maximum value detector and the other maximum value detector, compares both signals, and outputs a comparison result.
    • 公开了一种与具有频率分量的输入视频信号一起使用的色彩系统确定电路。 该电路包括一个彩色陷波滤波器,用于利用提供彩色脉冲串输出信号的色彩捕捉滤波器来衰减输入视频信号中的频率分量;比较器,用于比较彩色陷波滤波器的色同步输出信号和输入的频率分量 视频信号,接收彩色陷波滤波器的色同步输出信号的最大值检测器和彩色脉冲串采样信号,并且在彩色脉冲串采样信号的周期期间检测彩色陷波滤波器的色同步输出信号的最大值 以及另一个最大值检测器,其接收视频信号和色同步信号采样信号,并在色同步采样信号的周期期间检测视频信号的最大值。 比较器接收最大值检测器和另一个最大值检测器的输出信号,比较两个信号,并输出比较结果。