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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。
    • 4. 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。
    • 5. 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。
    • 6. 发明授权
    • Apparatus and method for YC separation and three-line correlation detection
    • YC分离和三线相关检测的装置和方法
    • US06809778B2
    • 2004-10-26
    • US09901976
    • 2001-07-10
    • Ryuichi ShibutaniNobuo Taketani
    • Ryuichi ShibutaniNobuo Taketani
    • H04N978
    • H04N9/78
    • Disclosed are an apparatus and a method for YC separation and three-line correlation detection with high accuracy, which allow the YC separator to generate reliable Y signals. The correlation detecting apparatus includes a sub-correlation detector. The detector checks input signals for the presence or absence of vertical correlation, and provides the signals with a judgment “high-correlation exists” or “otherwise”. According to the judgment, the correlation detecting apparatus changes the process; i) when accepted the judgment “high-correlation exists”, the apparatus determines the judgment to be reliable and adopts it as the output, ii) when accepted “otherwise”, the apparatus increases its detecting accuracy and provides the signals with multi-leveled outputs according to the correlation levels. In this way, the main apparatus switches the detecting mode according to the result from sub-correlation detector, with the detecting accuracy greatly improved. This also allows the YC separator to flexibly cope with input signals.
    • 本发明公开了一种高精度YC分离和三线相关检测的装置和方法,其允许YC分离器产生可靠的Y信号。 相关检测装置包括子相关检测器。 检测器检查输入信号是否存在垂直相关性,并且向信号提供具有“高相关性存在”或“否则”的判断。 根据该判断,相关检测装置改变处理。 i)当接受判断“高相关存在”时,设备将判断确定为可靠并将其作为输出,ii)当接受“否”时,设备增加其检测精度,并提供多层次的信号 输出根据相关级别。 以这种方式,主设备根据子相关检测器的结果切换检测模式,检测精度大大提高。 这也允许YC分离器灵活地处理输入信号。
    • 7. 发明授权
    • Horizontal automatic frequency control (AFC) circuit
    • 水平自动频率控制(AFC)电路
    • US06731344B2
    • 2004-05-04
    • US09901850
    • 2001-07-09
    • Nobuo TaketaniRyuichi Shibutani
    • Nobuo TaketaniRyuichi Shibutani
    • H03L709
    • H04N3/227H04N5/12
    • A horizontal automatic frequency control (AFC) used in a display having a display device such as a cathode ray tube (CRT) is provided. The AFC circuit reduces a horizontal distortion and horizontal jitter on the CRT. The AFC circuit includes a video signal processor for demodulating and converting an input video signal into a desired signal such as a YUV signal or an RGB signal, a synchronous separator for separating a synchronizing signal from the video signal, a dual-port line memory, an Hout generator for generating a horizontal driving pulse which drives a horizontal deflection yoke, a read clock generator for generating a read clock (RCK) signal which is synchronized in phase with a flyback pulse, and a horizontal deflection driver for controlling horizontal deflection of the CRT and generating the flyback pulse. The line memory absorbs a horizontal position change of a displayed image caused by a temperature change or a load change in the horizontal deflection driver.
    • 提供了在具有诸如阴极射线管(CRT)的显示装置的显示器中使用的水平自动频率控制(AFC)。 AFC电路降低了CRT上的水平失真和水平抖动。 AFC电路包括用于将输入视频信号解调和转换为诸如YUV信号或RGB信号的期望信号的视频信号处理器,用于从视频信号分离同步信号的同步分离器,双端口线存储器, 用于产生驱动水平偏转线圈的水平驱动脉冲的Hout发生器,用于产生与回扫脉冲相位同步的读时钟(RCK)信号的读时钟发生器和用于控制水平偏转驱动器的水平偏转驱动器, CRT并产生回扫脉冲。 行存储器吸收由水平偏转驱动器中的温度变化或负载变化引起的显示图像的水平位置变化。