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    • 5. 发明授权
    • Clamping circuit for color television signals
    • 彩色电视信号的钳位电路
    • US4183050A
    • 1980-01-08
    • US919706
    • 1978-06-27
    • Takao TsuchiyaShouji OmoriYasunobu KuniyoshiAtsushi MatsuzakiSusumu AkazawaKiyonori Tominaga
    • Takao TsuchiyaShouji OmoriYasunobu KuniyoshiAtsushi MatsuzakiSusumu AkazawaKiyonori Tominaga
    • H04N9/72H04N9/535
    • H04N9/72
    • A clamping circuit for color television signals includes a demodulator for demodulating the chrominance component of the color television signals to produce first and second color difference signals, and first and second adders for adding adjustable first and second control signals to the first and second color difference signals so as to produce modified first and second color difference signals. A matrix circuit is responsive to the outputs from the first and second adders to produce a third color difference signal. A reference signal, which represents a predetermined level of a color television signal, such as the pedestal level, is added to each of the color difference signals; and a first comparator compares the first color difference signal, with the reference signal added thereto, to the third color difference signal, with the reference signal added thereto, and a second comparator compares the second color difference signal, with the reference signal added thereto, to the third color difference signal, with the reference signal added thereto. At the times of occurrence of the pedestal level of the color television signal, the outputs from the first and second comparators are sampled, respectively, to produce the first and second control signals which are fed back and added to the first and second color difference signals.In one embodiment, the reference signal is a d.c. level proportional to the pedestal level of the color television signal. In another embodiment, the reference signal is the luminance component of the color television signal clamped to the pedestal level. This clamped luminance signal is produced by another clamp circuit.
    • 用于彩色电视信号的钳位电路包括用于解调彩色电视信号的色度分量以产生第一和第二色差信号的解调器,以及用于将可调节的第一和第二控制信号添加到第一和第二色差信号的第一和第二加法器 以产生修改的第一和第二色差信号。 矩阵电路响应于来自第一和第二加法器的输出以产生第三色差信号。 将表示彩色电视信号的预定电平(诸如基座电平)的参考信号加到每个色差信号上; 并且第一比较器将所述第一色差信号与添加到其上的参考信号相比较,并将参考信号加到第三色差信号上,而第二比较器将第二色差信号与添加的参考信号进行比较, 到第三色差信号,其中添加了参考信号。 在出现彩色电视信号的基准电平的时刻,分别对来自第一和第二比较器的输出进行采样,以产生反馈并添加到第一和第二色差信号的第一和第二控制信号 。 在一个实施例中,参考信号是直流。 电平与彩色电视信号的基座电平成正比。 在另一个实施例中,参考信号是被钳位到基座电平的彩色电视信号的亮度分量。 该钳位亮度信号由另一钳位电路产生。
    • 6. 发明授权
    • Flat display apparatus
    • 平板显示装置
    • US06426595B1
    • 2002-07-30
    • US09499542
    • 2000-02-07
    • Ryota OdakeYoshio SuzukiAtsushi Matsuzaki
    • Ryota OdakeYoshio SuzukiAtsushi Matsuzaki
    • G09G310
    • G09G3/3216G09G3/20G09G2300/026G09G2310/0221H01L27/3288H01L27/3293
    • A flat display apparatus having improved luminance, contrast and response of display, and applicable for assembling a large flat display apparatus free from the discontinuity of display and having improved luminance, contrast and response of display. The flat display apparatus includes a plurality of signal electrodes divided into at least three regions; a plurality of scanning electrodes intersecting to the plurality of signal electrodes; and a plurality of displaying signal supplying circuits for independently supplying display signals to the signal electrodes in each divided region. The flat display apparatus may include a display panel in which a plurality of signal electrodes and a plurality of scanning electrodes are intersected. The signal electrodes are divided into two or more regions, and a plurality of feeding portions for supplying signal to the signal electrodes are provided on a rear surface of the display panel.
    • 具有改进的亮度,对比度和显示响应的平面显示装置,并且适用于组装没有显示不连续性的大型平面显示装置,并具有改善的显示亮度,对比度和响应。 平面显示装置包括分成至少三个区域的多个信号电极; 与所述多个信号电极相交的多个扫描电极; 以及多个显示信号供给电路,用于在每个分割区域中独立地向信号电极提供显示信号。 平面显示装置可以包括多个信号电极和多个扫描电极相交的显示面板。 信号电极被分成两个或更多个区域,并且在显示面板的后表面上设置有用于向信号电极提供信号的多个馈送部分。
    • 7. 发明授权
    • Multi-beam projector with dual-beam cathode ray tubes
    • 具有双光束阴极射线管的多光束投影仪
    • US4668977A
    • 1987-05-26
    • US647920
    • 1984-09-06
    • Satoshi OhnoKoji IchidaHideo TomitaAtsushi Matsuzaki
    • Satoshi OhnoKoji IchidaHideo TomitaAtsushi Matsuzaki
    • H04N9/31H04N9/18
    • H04N9/31
    • A multi-beam projector incorporates a cathode ray tube for each of the primary colors red, green and blue, with each cathode ray tube having two electron beams, with all of said electron beams being horizontally and vertically deflected in synchronism with each other. Primary color video signals are supplied to one cathode of each cathode ray tube for generating a first beam, and a delayed primary color video signal is supplied to the second cathode of each cathode ray tube for generating a second beam spaced from the first beam by a predetermined interval. The interval spacing between the beam of the cathode ray tube for the blue primary color is wider than the interval between the electron beams for the other cathode ray tubes.
    • 多光束投影仪包含用于红色,绿色和蓝色原色的阴极射线管,每个阴极射线管具有两个电子束,所有的所述电子束彼此同步地水平和垂直偏转。 原色视频信号被提供给每个阴极射线管的一个阴极,用于产生第一光束,并且将延迟的原色视频信号提供给每个阴极射线管的第二阴极,用于产生与第一光束间隔开的第二光束 预定间隔。 用于蓝色原色的阴极射线管的光束之间的间隔宽度大于其它阴极射线管的电子束之间的间隔。
    • 8. 发明授权
    • Video signal processing circuit
    • 视频信号处理电路
    • US4369466A
    • 1983-01-18
    • US209023
    • 1980-11-21
    • Atsushi MatsuzakiMitsuo Kawamata
    • Atsushi MatsuzakiMitsuo Kawamata
    • H04N5/16H04N5/18
    • H04N5/185H04N5/165
    • A video signal processing circuit for an input video signal having a DC level, a pedestal level, and a blanking period, includes a first clamp circuit for clamping the pedestal level of the input video signal to a first predetermined DC level in response to a clamp voltage supplied from a clamp voltage source, a blanking circuit for setting the level of the input video signal to a second predetermined DC level which is higher than the pedestal level of the input video signal during the blanking period of the input video signal and for producing a wave-formed signal, a peak-hold circuit for detecting and holding the darkest level of the wave-formed signal and for producing a peak-held signal, a series circuit of a diode and resistor, which produces a threshold level signal, connected between the first clamp circuit and the output of the peak-held circuit, a comparator circuit supplied at one input with the lower of the threshold level signal and the peak-held signal and supplied at another input with the output from the first clamp circuit for comparing the signals supplied thereto and for producing an output signal corresponding to the higher one of the compared signals, and an average picture level detecting circuit including a variable impedance element connected to the resistor for increasing the threshold level signal in response to increases in the average picture level of the input video signal.
    • 用于具有DC电平,基座电平和消隐周期的输入视频信号的视频信号处理电路包括:第一钳位电路,用于响应于钳位钳位输入视频信号的基准电平到第一预定DC电平 由钳位电压源提供的电压,用于将输入视频信号的电平设置为比输入视频信号的消​​隐期间输入视频信号的基准电平高的第二预定DC电平的消隐电路, 波形信号,用于检测和保持波形信号的最暗电平并产生峰值保持信号的峰值保持电路,产生阈值电平信号的二极管和电阻器的串联电路,连接 在第一钳位电路和峰值保持电路的输出之间,在一个输入端提供阈值电平信号和峰值保持信号的较低值的比较器电路,并在anot提供 其输入与来自第一钳位电路的输出相比较,用于比较提供给它们的信号并产生与较高比较信号相对应的输出信号,平均图像电平检测电路包括连接到电阻器的可变阻抗元件以增加 该阈值电平信号响应于输入视频信号的平均图像电平的增加。
    • 9. 发明授权
    • Color television receiver AFPC circuit
    • 彩色电视接收机AFPC电路
    • US4255759A
    • 1981-03-10
    • US957740
    • 1978-11-06
    • Shoji OhmoriAtsushi MatsuzakiKiyonori Tominaga
    • Shoji OhmoriAtsushi MatsuzakiKiyonori Tominaga
    • H04N9/45H03L7/181H04N9/455H04N9/46
    • H04N9/455H03L7/181
    • A color television receiver includes an automatic phase control circuit (which will be hereinafter referred to simply as an APC circuit) with a voltage controlled oscillator for controlling the phase of a reference carrier supplied to a color demodulator so that the phase and frequency of the reference carrier are locked to those of a color burst signal. In addition to the APC circuit, an auxiliary frequency control loop drives the frequency of the voltage controlled oscillator until its frequency falls within the lock-in range of the APC loop. The auxiliary frequency control loop includes a counter circuit for counting cycles of the output signal of the voltage controlled oscillator during a reference time interval and a decoding circuit for decoding the output of the counter circuit to produce an auxiliary control signal for frequency control of the voltage controlled oscillator.
    • 彩色电视接收机包括具有压控振荡器的自动相位控制电路(以下简称为APC电路),用于控制提供给彩色解调器的参考载波的相位,使得参考的相位和频率 载波被锁定到颜色突发信号的载波。 除了APC电路之外,辅助频率控制环路驱动压控振荡器的频率,直到其频率落在APC环路的锁定范围内。 辅助频率控制回路包括用于在参考时间间隔期间对压控振荡器的输出信号的周期进行计数的计数器电路和用于解码计数器电路的输出的解码电路,以产生用于电压的频率控制的辅助控制信号 受控振荡器。