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    Drop-out responsive magnetic recording and reproducing system
    1.
    发明授权
    Drop-out responsive magnetic recording and reproducing system 失效
    辍学响应磁记录和再现系统

    公开(公告)号：US4137547A

    公开(公告)日：1979-01-30

    申请号：US842883

    申请日：1977-10-17

    申请人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Sadafumi Kitamura ,  Norio Meki

    发明人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Sadafumi Kitamura ,  Norio Meki

    IPC分类号： H04N9/84 ,  H04N5/76

    CPC分类号： H04N9/84

    摘要： A magnetic recording and reproducing system which separates a brightness signal and a carrier color signal from a color television signal, frequency modulates the brightness signal and converts the carrier color signal to a lower frequency, records the modulated brightness signal and the low frequency carrier color signal in different manner for each horizontal scan line such that phases of the carrier are different between adjacent record tracks, and plays back the recorded signal through a comb filter to eliminate crosstalk from adjacent tracks in the carrier color signal. In this system, a horizontal synch. signal is eliminated in response to the detection of dropouts so as to prevent the disturbance of AFC and APC loops by dropouts, which would otherwise create color irregularity, and the horizontal synch. signal free of noise due to dropouts is used to activate the AFC and APC loops.

    摘要翻译： 一种从彩色电视信号分离亮度信号和载体颜色信号的磁记录和再现系统，对亮度信号进行频率调制并将载波颜色信号转换成较低频率，记录调制亮度信号和低频载波颜色信号 对于每个水平扫描线以不同的方式，使得载体的相位在相邻记录轨道之间不同，并且通过梳状滤波器重放记录的信号，以消除载波颜色信号中的相邻轨道的串扰。 在这个系统中，一个水平同步。 响应于检测到掉落而消除信号，以便防止AFC和APC环路由落差的干扰，否则会产生颜色不均匀性和水平同步。 信号由于丢失而导致的噪声被用于激活AFC和APC环路。

    Equipment for recording and reproducing color television signal
    2.
    发明授权
    Equipment for recording and reproducing color television signal 失效
    彩色电视信号录放设备

    公开(公告)号：US3969755A

    公开(公告)日：1976-07-13

    申请号：US512206

    申请日：1974-10-07

    申请人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Chojuro Yamamitsu

    发明人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Chojuro Yamamitsu

    IPC分类号： H04N5/775 ,  H04N9/83 ,  H04N5/76

    CPC分类号： H04N9/83 ,  H04N5/775

    摘要： An equipment for recording and reproducing color television signals or VTR (video tape recorder) is combined with a color television receiver as a single unit in such a way that some of their circuits are used in common with both the VTR and receiver, whereupon the circuit design as well as operation may be greatly simplified. The VTR and receiver are operatively coupled to each other through a switch for selecting a recording or reproducing mode. In recording mode, the video signal, which is received and detected by the receiver, passes through the mode selction switch to the luminance signal processing circuit and the carrier chrominance signal processing circuit in the receiver. The separated luminance and chrominance signals are applied to the input terminal of the VTR so that they may be recorded while one is watching the picture on a picture tube. In the reproduction mode, the luminance and chrominance signals derived from the output of the VTR are added and applied to the input terminal of the processing circuits in the receiver through the mode selection switch so that they are processed in the signal processing circuits to reproduce the picture on the picture tube. In one embodiment of the present invention, the luminance and chrominance signals may be applied to their processing circuits, respectively, in the receiver through another selection switch. An APC type or a ringing type circuit is used for color synchronization. In order to minimize the effects caused by the jitter in the VTR, a feedback loop including the reproduction circuit of the VTR is provided. In the APC (automatic phase control) circuits, the crystal oscillator and/or LC oscillator are used.

    摘要翻译： 用于记录和再现彩色电视信号或VTR（录像机）的设备与作为单个单元的彩色电视接收机组合，使得它们的一些电路与VTR和接收机都共同使用，于是电路 设计以及操作可能会大大简化。 VTR和接收器通过用于选择记录或再现模式的开关彼此操作地耦合。 在记录模式中，由接收器接收和检测的视频信号通过模式切换开关传送到接收机中的亮度信号处理电路和载波色度信号处理电路。 分离的亮度和色度信号被施加到VTR的输入端，使得它们可以在一个正在观看显像管上的图像时被记录。 在再现模式中，从VTR的输出得到的亮度和色度信号通过模式选择开关被加到接收机的处理电路的输入端，并在信号处理电路中进行处理 图片在显像管上。 在本发明的一个实施例中，亮度和色度信号可以分别通过另一选择开关施加到接收机中的处理电路。 APC类型或振铃型电路用于颜色同步。 为了最小化VTR中的抖动引起的影响，提供了包括VTR的再现电路的反馈回路。 在APC（自动相位控制）电路中，使用晶体振荡器和/或LC振荡器。

    Color television signal recording employs chrominance below luminance spectrum and color burst to correct timing variations
    3.
    发明授权
    Color television signal recording employs chrominance below luminance spectrum and color burst to correct timing variations 失效
    彩色电视信号记录使用低于亮度谱和色彩突变的色度来校正时间变化

    公开(公告)号：US3938180A

    公开(公告)日：1976-02-10

    申请号：US445922

    申请日：1974-02-26

    申请人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Hiromichi Tanaka

    发明人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Hiromichi Tanaka

    IPC分类号： H04N9/455 ,  H04N9/83 ,  H04N5/76 ,  H04N9/02

    CPC分类号： H04N9/455 ,  H04N9/83

    摘要： A signal processing system for obtaining a continuous signal, phase locked to a signal subjected to timing variations. The continuous signal phase locked to a signal subjected to timing variations is obtained from a variable oscillator, whose oscillation is controlled according to an error signal produced from a phase comparator in accordance with the phase difference between the signal subjected to timing variations and a higher-frequency signal produced from the output of said variable oscillator in the presence of a fixed oscillator.

    摘要翻译： 一种用于获得连续信号的信号处理系统，锁相到经过定时变化的信号。 锁定到经过定时变化的信号的连续信号相位是从可变振荡器获得的，该可变振荡器的振荡根据由相位比较器产生的误差信号根据经过定时变化的信号之间的相位差而被控制， 在固定振荡器的存在下从所述可变振荡器的输出产生的频率信号。

    System for recording and reproducing a color television signal
    4.
    发明授权
    System for recording and reproducing a color television signal 失效
    用于记录和再现彩色电视信号的系统

    公开(公告)号：US3953882A

    公开(公告)日：1976-04-27

    申请号：US501431

    申请日：1974-08-29

    申请人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Kunio Sekimoto

    发明人： Ichiro Arimura ,  Hiroshi Taniguchi ,  Kunio Sekimoto

    IPC分类号： G11B20/02 ,  H03L7/08 ,  H04N9/45 ,  H04N9/83 ,  H04N9/02

    CPC分类号： H04N9/83

    摘要： In a system for cancelling time axis variations introduced into a frequency converted chrominance signal converted into a lower frequency range in the recording and reproduction of a color television signal with a small-size video tape recorder, in which system the cancellation of the time axis variations is effected by using a continuous reference signal obtained through an APC heterodyne system, the center frequency of oscillation of an APC oscillator is made n/m times the subcarrier frequency f.sub.s of the lower frequency converted chrominance signal (m and n being integers and n>m), and the reproduced frequency converted chrominance signal is heterodyned with a signal obtained by heterodyning a continuous signal obtained by dividing the frequency of the output signal of the oscillator by n/m in the presence of a steady reference signal at the same frequency as the standard color sub-carrier frequency to thereby obtain the cancellation of the time axis variations.

    摘要翻译： 在用小尺寸磁带录像机记录和再现彩色电视信号时，消除引入到转换成较低频率范围的频率转换色度信号的时间轴变化的系统中，时间轴变化的消除 通过使用通过APC外差系统获得的连续参考信号来实现，APC振荡器的振荡的中心频率为低频转换色度信号的副载波频率fs的n / m倍（m和n为整数，n> m），并且再现的频率转换色度信号与通过在与稳定参考信号的存在下以与振荡器的输出信号的频率相除n / m获得的连续信号获得的信号进行外差，频率与 标准颜色副载波频率，从而获得时间轴变化的消除。

    Color killer circuit system video tape recorder
    7.
    发明授权
    Color killer circuit system video tape recorder 失效
    彩色杀手电路系统录像机

    公开(公告)号：US3975759A

    公开(公告)日：1976-08-17

    申请号：US514182

    申请日：1974-10-11

    申请人： Hiroshi Taniguchi ,  Ichiro Arimura

    发明人： Hiroshi Taniguchi ,  Ichiro Arimura

    IPC分类号： G11B20/02 ,  H04N9/70 ,  H04N9/793 ,  H04N9/83 ,  H04N5/79

    CPC分类号： H04N9/83 ,  H04N9/70 ,  H04N9/793

    摘要： A steady and inexpensive color killer circuit system for a simplified video tape recorder of the type wherein the luminance signal and chrominance signal of a color television signal are respectively converted into an angular modulation signal and a lower frequency conversion signal for recording these signals in the form of a combined signal and also where a reproduced lower frequency converted chrominance signal is heterodyned with a continuous signal phase locked to the color burst signal in the reproduced chrominance signal to thereby cancel jitter components in the reproduced chrominance signal. The color killer circuit system comprises a single killer detector provided in the reproducing circuit, said killer detector including a switch for coupling the lower frequency converted chrominance signal on the recording side to the reproducing side circuit, a phase shifter for 90-degree phase shifting either one of two inputs, namely the afore-said color burst signal and a continuous signal, to a phase comparator to produce said continuous signal phase locked to the color burst signal, and a synchronous detector for synchronously detecting the color burst signal with the afore-said continuous signal phase locked thereto. The detection output of the killer detector is used to control the color killer circuits.

    摘要翻译： 一种用于这种类型的简化磁带录像机的稳定且廉价的彩色抑制电路系统，其中彩色电视信号的亮度信号和色度信号分别转换为角度调制信号和用于以这种形式记录这些信号的较低频率转换信号 并且再现的低频转换色度信号在被再现的色度信号中被锁定到色同步信号的连续信号相位被外差，从而消除再现的色度信号中的抖动分量。 彩色杀伤电路系统包括设置在再现电路中的单个杀手检测器，所述杀手检测器包括用于将记录侧的低频转换色度信号耦合到再现侧电路的开关，用于90度相移的移相器 将两个输入中的一个，即前述彩色同步信号和连续信号中的一个提供给相位比较器，以产生锁定到色同步信号的所述连续信号相位;以及同步检测器，用于与上述色同步信号同步检测， 所述连续信号相位锁定在其上。 杀手检测器的检测输出用于控制彩色抑制电路。

    Video recording and reproducing apparatus with noise reduction
    9.
    发明授权
    Video recording and reproducing apparatus with noise reduction 失效
    具有降噪功能的视频录放机

    公开(公告)号：US4597021A

    公开(公告)日：1986-06-24

    申请号：US693233

    申请日：1985-01-22

    申请人： Chojuro Yamamitsu ,  Ichiro Arimura

    发明人： Chojuro Yamamitsu ,  Ichiro Arimura

    IPC分类号： H04N5/93 ,  G11B20/02 ,  G11B20/06 ,  H04N5/208 ,  H04N5/21 ,  H04N5/911 ,  H04N5/923 ,  H04N5/92 ,  H04N5/782

    CPC分类号： H04N5/923 ,  H04N5/21 ,  H04N5/911

    摘要： A video signal recording and reproducing apparatus in which the luminance signal of a color video signal is frequency-modulated for recording and a reproduction frequency-modulated signal is frequency-demodulated to produce a reproduction video signal. A high frequency component is separated from the reproduction video signal and applied to a slice circuit comprising nonlinear elements including, for example, diodes connected in parallel with reverse polarities, thus eliminating noise at the low frequency signals included in the high frequency component. The apparatus further comprises a device for subtracting the sliced signal and the reproduced video signal one from the other in such a manner that the two signals are in phase with each other substantially at the desired ratio and in a predetermined frequency band. In this way, noise contained in the edge portion of the reproduction video signal, crosstalk and moire patterns caused at the time of azimuth recording without a guardband are decreased, thus improving the signal-to-noise ratio of the edge portion. If this apparatus is combined with a conventional device for reducing noise at the low frequency portion of the video signal, FM interleaving techniques and nonlinear emphasis, a high-density recording with narrow tracks and short wavelength is made possible, thereby producing a stable reproduced image with high S/N ratio having no undesired components.

    摘要翻译： 其中彩色视频信号的亮度信号被频率调制以用于记录和再现频率调制信号的视频信号记录和再现装置进行频率解调以产生再现视频信号。 将高频分量与再现视频信号分离，并将其施加到包括例如包括与反向极性并联连接的二极管的非线性元件的片电路，从而消除包括在高频分量中的低频信号的噪声。 该装置还包括用于以两个信号基本上处于所需比例并且在预定频带中彼此同相的方式从另一个中减去分片信号和再现的视频信号的装置。 以这种方式，包含在再现视频信号的边缘部分中的噪声，在没有保护带的方位记录时引起的串扰和莫尔图案减小，从而提高了边缘部分的信噪比。 如果该装置与用于降低视频信号的低频部分的噪声的常规装置组合，则FM交织技术和非线性强调可以实现具有窄轨迹和短波长的高密度记录，从而产生稳定的再现图像 具有高S / N比，没有不期望的组分。

    Magnetic recording and reproducing apparatus for color video signals
    10.
    发明授权
    Magnetic recording and reproducing apparatus for color video signals 失效
    用于彩色视频信号的磁记录和再现装置

    公开(公告)号：US4400742A

    公开(公告)日：1983-08-23

    申请号：US154454

    申请日：1980-05-29

    申请人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Masamitsu Ohtsu

    发明人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Masamitsu Ohtsu

    IPC分类号： G11B20/02 ,  H04N9/793 ,  H04N9/83 ,  H04N9/84 ,  H04N5/79

    CPC分类号： H04N9/793

    摘要： A magnetic recording and reproducing apparatus, for recording and reproducing the color television signal including VIR signal, of the type having a comb filter which is inserted in the chrominance signal system and includes a delay line for causing a delay equal to one horizontal line scanning period. In this apparatus the VIR signal has no line correlation so that the output of the comb filter becomes a VIR signal the amplitude of which is reduced by 6dB and that the amplitude and/or phase of the chrominance components of VIR signal are caused to vary over a wide range due to the effects of VIT signal. In order that the stable and correct color images may be reproduced even by a color television receiver of the type in which the amplitude and phase of the chrominance components of VIR signal are detected so as to automatically adjust the color saturation and hue, the amplitude of the chrominance components of VIR signal is detected and corrected in a recording system of a magnetic recording and reproducing apparatus; the burst signal and the chrominance components of VIR signal are compared in phase so as to correct the phase of the carrier color signal with the difference signal before the carrier color signal is recorded; and in the playback mode the chrominance components of VIP signal of the carrier color signal free from time axis distortions are replaced with the stable oscillator output.

    摘要翻译： 一种用于记录和再现包括VIR信号的彩色电视信号的磁记录和再现装置，该彩色电视信号具有插入色度信号系统中的梳状滤波器，并且包括用于引起等于一个水平行扫描周期的延迟的延迟线 。 在该装置中，VIR信号没有线相关，使得梳状滤波器的输出变为VIR信号，其振幅降低6dB，并且使得VIR信号的色度分量的幅度和/或相位发生变化 由于VIT信号的影响，范围很广。 为了即使通过检测到VIR信号的色度分量的幅度和相位的类型的彩色电视接收机也可以再现稳定和正确的彩色图像，以便自动调整色饱和度和色调， 在磁记录和再现装置的记录系统中检测和校正VIR信号的色度分量; 比较VIR信号的脉冲串信号和色度分量的相位，以便在记录载波颜色信号之前用差分信号校正载波颜色信号的相位; 并且在回放模式中，没有时间轴失真的载波颜色信号的VIP信号的色度分量被稳定的振荡器输出替代。