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21 条记录 (耗时 0.017 秒)

    Recording and reproducing system
    1.
    发明授权
    Recording and reproducing system 失效
    录音和再现系统

    公开(公告)号：US4303952A

    公开(公告)日：1981-12-01

    申请号：US919298

    申请日：1978-06-26

    申请人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Hiroshi Taniguchi

    发明人： Chojuro Yamamitsu ,  Ichiro Arimura ,  Hiroshi Taniguchi

    IPC分类号： H04N5/922 ,  G11B20/06 ,  G11B23/00 ,  H03G9/02 ,  H04B1/62 ,  H04N5/923 ,  G11B5/45 ,  G11B5/02

    CPC分类号： G11B23/0007 ,  H03G9/025 ,  H04N5/923

    摘要： A video signal recording and reproducing system in which a video signal to be recorded is passed through preemphasis means and subsequently angular modulated so that it is recorded on a record medium. During playback operation, the video signal is angular demodulated and deemphasized through a deemphasis means. Preemphasis means comprises both a non-linear preemphasis circuit and a fixed preemphasis circuit. The deemphasis means similarly comprises a fixed deemphasis circuit and a non-linear deemphasis circuit. Each of the non-linear circuits is responsive to the amplitude of an input signal thereon.

    摘要翻译： 一种视频信号记录和再现系统，其中要记录的视频信号通过预加重装置并随后进行角度调制，使其被记录在记录介质上。 在播放操作期间，视频信号通过去加重方式进行角度解调和去加重。 预加重装置包括非线性预加重电路和固定预加重电路。 去加重的手段类似地包括固定的去加重电路和非线性去加重电路。 每个非线性电路响应于其上的输入信号的幅度。

    Drop-out responsive magnetic recording and reproducing system
    4.
    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
    5.
    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。

    Video recording and reproducing apparatus with noise reduction
    7.
    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
    8.
    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。

    Video signal encoding and decoding apparatus
    9.
    发明授权
    Video signal encoding and decoding apparatus 失效
    视讯信号编解码装置

    公开(公告)号：US5367334A

    公开(公告)日：1994-11-22

    申请号：US882927

    申请日：1992-05-14

    申请人： Masakazu; Nishino ,  Chojuro Yamamitsu ,  Tatsuro Juri ,  Toyohiko Matsuta ,  Shigeru Awamoto

    发明人： Masakazu; Nishino ,  Chojuro Yamamitsu ,  Tatsuro Juri ,  Toyohiko Matsuta ,  Shigeru Awamoto

    IPC分类号： H04N5/44 ,  H04N7/015 ,  H04N7/08 ,  H04N7/26 ,  H04N7/30 ,  H04N7/46 ,  H04N7/13

    CPC分类号： H04N7/0122 ,  H04N19/30 ,  H04N19/59 ,  H04N19/60 ,  H04N7/015 ,  H04N7/0806

    摘要： An encoding and decoding apparatus for a video signal and a high-definition television signal is disclosed. For the picture A having the horizontal to vertical screen frame ratio of 4:3, the picture B having the horizontal to vertical screen frame ratio of 16:9 and the picture C having the horizontal to vertical screen frame ratio of 16:9 and having a larger number of vertical pixels than that of the picture A and picture B, the apparatus limits the band of the picture C to obtain the picture D having the same numbers of horizontal and vertical pixels respectively as those of the picture B, and high-efficiency encodes the picture A, picture B or picture D in the same method. The apparatus obtains the additional picture E which is a difference between the picture D and the picture C, or a difference between the picture D' which is a result of decoding a signal that has been obtained by high-efficiency encoding the picture D and the picture C, and then high-efficiency encodes the additional picture E obtained.

    摘要翻译： 公开了一种用于视频信号和高清晰度电视信号的编码和解码装置。 对于水平至垂直屏幕帧比为4：3的图像A，图像B的水平垂直屏幕帧比为16:9，图像C的水平垂直屏幕帧比为16:9，并具有 垂直像素数量大于图像A和图像B的垂直像素数量，该装置限制图像C的频带以获得具有与图像B相同数量的水平和垂直像素数量的图像D， 以相同的方法对图像A，图像B或图像D进行高效编码。 该装置获得作为图像D和图像C之间的差的附加图像E，或作为通过对图像D进行高效编码获得的信号的解码结果的图像D'与 图片C，然后对所获得的附加图片E进行高效编码。

    Digital recording and reproducing apparatus for television signal
    10.
    发明授权
    Digital recording and reproducing apparatus for television signal 失效
    用于电视信号的数字记录和再现装置

    公开(公告)号：US4633330A

    公开(公告)日：1986-12-30

    申请号：US620732

    申请日：1984-06-13

    申请人： Chojuro Yamamitsu ,  Ichiro Ogura ,  Kunio Suesada ,  Akira Iketani

    发明人： Chojuro Yamamitsu ,  Ichiro Ogura ,  Kunio Suesada ,  Akira Iketani

    IPC分类号： H04N5/91 ,  H04N5/92 ,  H04N5/926 ,  H04N9/80 ,  H04N9/808

    CPC分类号： H04N5/9264 ,  H04N9/8081

    摘要： Disclosed is a digital recording and reproducing apparatus for television signal, which is designed to record and reproduce by sampling a television signal at a frequency lower than the Nyquist frequency, by dividing the sampled signal into blocks each of which is composed of adjacent plural sampling points, by orthogonally transforming in each block, and by subjecting the orthogonally transformed signal to weighted quantizing. The apparatus has achieved the reduction of recording bit and decrease of error propagation rate simultaneously so as to be applicable to recording and reproduction even in a home use VTR.

    摘要翻译： 公开了一种用于电视信号的数字记录和再现装置，其被设计为通过对采样信号进行采样而将频率低于奈奎斯特频率的电视信号进行采样来记录和再现，每个块由相邻的多个采样点 通过在每个块中进行正交变换，并对正交变换的信号进行加权量化。 该装置同时实现了记录位的减少和误差传播速率的降低，从而即使在家用VTR中也适用于记录和再现。