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1. 发明授权

US4303950A Helical scan video tape recorder for recording video and audio signals on contiguous tracks 失效
标题翻译：用于在连续轨道上记录视频和音频信号的螺旋扫描录像机
公开(公告)号：US4303950A
公开(公告)日：1981-12-01
申请号：US56845
申请日：1979-07-12
申请人： Hiroshi Taniguchi , Osahiko Yano , Chojuro Yamamitsu , Sadafumi Kitamura , Masamitsu Ohtsu
发明人： Hiroshi Taniguchi , Osahiko Yano , Chojuro Yamamitsu , Sadafumi Kitamura , Masamitsu Ohtsu
IPC分类号： G11B27/024 , G11B27/029 , H04N5/928 , H04N5/78 , G11B5/49
CPC分类号： G11B27/029 , H04N5/928 , G11B2220/90 , G11B27/024
摘要： In a magnetic recording and reproducing system of the type wherein a plurality of rotating magnetic heads record the video signal on a magnetic tape as tracks which are inclined at an angle relative to the direction of travel of the magnetic tape, the audio signal is time compressed and recorded by the rotating magnetic heads on tracks contiguous with either or both ends of said video signal recording tracks, whereby even at a considerably low tape transport speed the audio signal may be recorded in a stable manner.
摘要翻译：在这样的磁记录和再现系统中，其中多个旋转磁头将磁带上的视频信号作为相对于磁带行进方向以一定角度倾斜的磁道记录，音频信号被时间压缩并且由旋转磁头记录在与所述视频信号记录磁道的一端或两端相邻的磁道上，由此即使在相当低的磁带传输速度下，可以以稳定的方式记录音频信号。

2. 发明授权

US4209800A Magnetic color video recording and reproducing system with color killer circuit 失效
标题翻译：具有彩色电路的磁性彩色视频录放系统
公开(公告)号：US4209800A
公开(公告)日：1980-06-24
申请号：US921718
申请日：1978-07-03
申请人： Chojuro Yamamitsu , Sadafumi Kitamura , Akira Miyamoto
发明人： Chojuro Yamamitsu , Sadafumi Kitamura , Akira Miyamoto
IPC分类号： G11B20/02 , H04N9/793 , H04N9/83 , H04N9/873 , H04N5/795
CPC分类号： H04N9/873 , H04N9/793 , H04N9/83
摘要： A magnetic video recording and reproducing system in which a luminescence signal of a color television signal is frequency-modulated and a carrier chrominance signal is frequency-converted to a lower frequency side is disclosed, wherein during recording operation a burst signal of an input carrier chrominance signal is phase-compared with a signal from a variable frequency oscillator to produce an error signal which is used to control the variable frequency oscillator, and during playback operation a burst signal of a reproduced carrier chrominance signal is phase-compared with an output signal from a fixed frequency oscillator to produce an error signal which is used to control the variable frequency oscillator. During the recording operation, the burst signal of the input carrier chrominance signal and the signal from the variable frequency oscillator are applied as input to the detection circuit and during the playback operation the burst signal of the reproduced carrier chrominance signal and the signal from the fixed frequency oscillator are applied as inputs to the detecting circuit, to produce a phase-detected output which is used as a control signal for a color killer in order to assure a stable and reliable color killer operation with a low cost.
摘要翻译：公开了一种磁性视频记录和再现系统，其中彩色电视信号的发光信号被频率调制并且载波色度信号被频率转换为较低频率侧，其中在记录操作期间，输入载波色度的突发信号信号与来自可变频率振荡器的信号进行相位比较，以产生用于控制可变频率振荡器的误差信号，并且在重放操作期间，再现载波色度信号的脉冲串信号与来自固定频率振荡器产生用于控制可变频率振荡器的误差信号。在记录操作期间，将输入载波色度信号的突发信号和来自可变频率振荡器的信号作为输入施加到检测电路，并且在重放操作期间，再现的载波色度信号的突发信号和来自固定的信号的信号频率振荡器被用作检测电路的输入，以产生相位检测输出，其用作彩色抑制器的控制信号，以便以低成本确保稳定和可靠的消色器操作。

3. 发明授权

US4137547A Drop-out responsive magnetic recording and reproducing system 失效
标题翻译：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。

4. 发明授权

US4400742A Magnetic recording and reproducing apparatus for color video signals 失效
标题翻译：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。

5. 发明授权

US4303952A Recording and reproducing system 失效
标题翻译：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。

6. 发明授权

US3969755A Equipment for recording and reproducing color television signal 失效
标题翻译：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。

7. 发明授权

US5367334A Video signal encoding and decoding apparatus 失效
标题翻译：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。

8. 发明授权

US4633330A Digital recording and reproducing apparatus for television signal 失效
标题翻译：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。

9. 发明授权

US4399472A Phase difference compensation between separately recorded luminance and chrominance signals 失效
标题翻译：单独记录的亮度和色度信号之间的相位差补偿
公开(公告)号：US4399472A
公开(公告)日：1983-08-16
申请号：US272372
申请日：1981-06-10
申请人： Katsuhiko Yamamoto , Chojuro Yamamitsu , Kunio Sekimoto , Kozo Kurashina
发明人： Katsuhiko Yamamoto , Chojuro Yamamitsu , Kunio Sekimoto , Kozo Kurashina
IPC分类号： H04N9/82 , H04N9/825 , H04N9/44 , H04N9/491
CPC分类号： H04N9/82 , H04N9/825
摘要： Luminance and chrominance signals, which are interleaved with respective synchronization signals, are recorded through the use of two video transducer heads alternately in skewed separate tracks of a recording tape. Upon reproduction, the timing signals are separated from the luminance and chrominance signals and compared in phase between them to detect the phase difference between the luminance and chrominance signals. A variable delay line is provided to introduce a variable delay interval as a function of the detected phase difference to the one of the signals which is advanced in phase relative to the other. The time axis deviation of the video signal from a standard phase is also detected by a comparison between the time base, or horizontal sync pulse, and a reference time base to introduce a delay time to both the luminance and chrominance signals.
摘要翻译：通过在记录带的偏斜的独立轨道中交替地使用两个视频传感器头来记录与相应同步信号交错的亮度和色度信号。在再现时，定时信号与亮度和色度信号分离，并在它们之间进行相位比较，以检测亮度和色度信号之间的相位差。提供可变延迟线，以将可变延迟间隔作为检测到的相位差的函数，引入相对于另一个进行相位的信号之一。视频信号与标准相位的时间轴偏差也可以通过时基或水平同步脉冲与参考时基之间的比较来检测，以将延迟时间引入亮度和色度信号两者。

10. 发明授权

US4425585A Video tape recorder immune to third-order distortion noise 失效
标题翻译：录像机不受三阶失真噪声影响
公开(公告)号：US4425585A
公开(公告)日：1984-01-10
申请号：US253883
申请日：1981-04-13
申请人： Kunio Sekimoto , Katsuhiko Yamamoto , Chojuro Yamamitsu , Kozo Kurashina
发明人： Kunio Sekimoto , Katsuhiko Yamamoto , Chojuro Yamamitsu , Kozo Kurashina
IPC分类号： H04N9/82 , H04N9/825 , H04N9/491 , G11B5/02
CPC分类号： H04N9/825
摘要： A portable video tape recorder for broadcasting applications comprises a pair of video heads mounted diametrically opposite to each other on the circumference of a rotary cylinder. High and low frequency carriers are modulated by frequency modulators with I and Q signals, respectively, and frequency division multiplexed for application to the video heads. The frequency values of the carriers are selected so that third-order distortion noise caused by the hysteresis characteristics of the video heads and the magnetic tape may fall within a frequency range differing from the frequencies of the modulated carriers by an amount greater than the bandwidth of the I and Q signals which are demodulated by frequency demodulators to prevent the occurrence of beat interference in the frequency band of the reproduced video signal.
摘要翻译：用于广播应用的便携式录像机包括在旋转圆筒的圆周上彼此径向相对安装的一对视频头。高频和低频载波分别由具有I和Q信号的频率调制器调制，频分复用以应用于视频头。选择载波的频率值，使得由视频头和磁带的滞后特性引起的三阶失真噪声可能落在与调制载波的频率不同的频率范围内，该频率范围大于由频率解调器解调的I和Q信号，以防止在再现的视频信号的频带中产生拍频干扰。

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