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公开(公告)号：US4677498A
公开(公告)日：1987-06-30
申请号：US658473
申请日：1984-10-09
申请人： Takuya Tsushima
发明人： Takuya Tsushima
CPC分类号： H04N9/81
摘要： A multiplexed color video signal recording and reproducing apparatus comprises a first circuit for producing a time division multiplexed signal in which one or two compressed color difference signals are multiplexed with the phase inverted for every predetermined horizontal scanning periods, a second circuit for producing a multiplexed color video signal by multiplexing the time division multiplexed signal with a non-compressed luminance signal, a third circuit for recording and reproducing the output signal of the second circuit on and from a recording medium, a comb filter circuit supplied with a reproduced signal from the third circuit, a fourth circuit for obtaining reproduced signals of the first and second color difference signals from an output reproduced time division multiplexed signal of the comb filter circuit, an encoder for producing a carrier chrominance signal from the output signals of the fourth circuit, and a fifth circuit for producing a reproduced color video signal by multiplexing the carrier chrominance signal and the reproduced luminance signal from the comb filter circuit.
摘要翻译： 复用彩色视频信号记录和再现装置包括：第一电路，用于产生时分复用信号，其中一个或两个压缩色差信号与每个预定水平扫描周期的相位反相多路复用;第二电路，用于产生复用色 通过将时分多路复用信号与非压缩亮度信号进行多路复用的视频信号，用于在记录介质上记录和再现第二电路的输出信号的第三电路，提供有来自第三个信号的再现信号的梳状滤波器电路 电路，用于从梳状滤波器电路的输出再现时分复用信号获得第一和第二色差信号的再现信号的第四电路，用于从第四电路的输出信号产生载波色度信号的编码器，以及 用于产生再现彩色视频信号的第五电路 通过对来自梳状滤波器电路的载波色度信号和再现的亮度信号进行复用。
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公开(公告)号：US4651227A
公开(公告)日：1987-03-17
申请号：US522188
申请日：1983-08-10
申请人： Yutaka Yunoki , Kenji Kimura
发明人： Yutaka Yunoki , Kenji Kimura
CPC分类号： H04N1/2137 , H04N1/0044 , H04N1/2112 , H04N1/646 , H04N9/045 , H04N2101/00
摘要： A video signal recording apparatus for recording outputs from a solid-state image pickup device on a magnetic disc. The output pixel signals from the solid-state image pickup device are written in a pixel memory through an A/D converter in units of pixels at a write rate equal to a read rate of the solid-state image pickup device. The pixel signals in the pixel memory are read out at a read rate lower than the write rate thereof. The readout data are D/A-converted and are supplied to a processing amplifier. The processing amplifier produces a video signal which is then recorded on the magnetic disc.
摘要翻译： 一种用于将来自固态图像拾取装置的输出记录在磁盘上的视频信号记录装置。 来自固态图像拾取装置的输出像素信号以与固态图像拾取装置的读取速率相等的写入速率以像素为单位通过A / D转换器写入像素存储器。 像素存储器中的像素信号以比其写入速率低的读出速率读出。 读出数据被D / A转换并提供给处理放大器。 处理放大器产生视频信号，然后记录在磁盘上。
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公开(公告)号：US4630131A
公开(公告)日：1986-12-16
申请号：US577119
申请日：1984-02-06
CPC分类号： H04N9/81
摘要： A recording signal generation system for a color video signal which is suitable for high density recording in a magnetic recording and playback apparatus. In each horizontal scan period which includes an effective horizontal scan period and a horizontal blanking period arranged serially on the time axis, a luminance signal is positioned in the effective horizontal scan period while, in the horizontal blanking period, compressed color signals generated by time-axis compressing color signals having a duration equal to the effective horizontal scan period by a predetermined ratio are disposed. The luminance signal and compressed color signals are time-division multiplexed. Special burst pilot signals are superposed on the multiplex signal each of which is separable from the compressed color signals and alternate with the other at an interval of one horizontal scan period, thereby discriminating the color signals from each other while indicating a position of horizontal blanking period. A carrier having a suitable frequency is frequency modulated by the superposed signal and the modulated output is used as a recording signal.
摘要翻译： 一种用于彩色视频信号的记录信号产生系统，其适用于磁记录和重放装置中的高密度记录。 在包括在时间轴上串联布置的有效水平扫描周期和水平消隐周期的每个水平扫描周期中，亮度信号位于有效水平扫描周期中，而在水平消隐周期中，由时间轴产生的压缩彩色信号， 布置具有等于有效水平扫描周期的持续时间预定比例的颜色信号。 亮度信号和压缩颜色信号被时分复用。 特殊突发导频信号叠加在多路复用信号上，每个信号可与压缩颜色信号分离，并以一个水平扫描周期的间隔彼此交替，从而在指示水平消隐周期的位置的同时识别颜色信号 。 具有适当频率的载波由叠加信号进行频率调制，调制输出用作记录信号。
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4.发明授权Recording and reproducing apparatus for recording and reproducing a carrier chrominance signal with pre-emphasis and de-emphasis 失效用于记录和再现具有预加重和去加重的载波色度信号的记录和再现装置
公开(公告)号：US4626927A
公开(公告)日：1986-12-02
申请号：US634407
申请日：1984-07-25
申请人： Akira Hirota , Takuya Tsushima , Nobuyoshi Suzuki
发明人： Akira Hirota , Takuya Tsushima , Nobuyoshi Suzuki
CPC分类号： H04N9/7936
摘要： A recording and reproducing apparatus for recording a carrier chrominance signal, comprises a separating circuit for separating a carrier chrominance signal from a color video signal, a recording signal processing circuit for converting the carrier chrominance signal into a carrier chrominance signal having a signal format suited for recording and reproduction, a recording circuit for recording an output signal of the recording signal processing circuit on a recording medium, a reproducing circuit for reproducing the recorded signal from the recording medium, a reproduced signal processing circuit for converting the reproduced signal from the reproducing circuit into a reproduced carrier chrominance signal having an original signal format, and a de-emphasis circuit responsive to the reproduced carrier chrominance signal from the reproduced signal processing circuit, for subjecting the reproduced carrier chrominance signal to a de-emphasis so that a high-frequency component in a vertical spatial frequency of the reproduced carrier chrominance signal is relatively attenuated compared to a low-frequency component of the reproduced carrier chrominance signal.
摘要翻译： 一种用于记录载波色度信号的记录和再现装置，包括用于从彩色视频信号中分离载波色度信号的分离电路，用于将载波色度信号转换成具有适合于信号格式的信号格式的载波色度信号的记录信号处理电路 记录和再现，用于将记录信号处理电路的输出信号记录在记录介质上的记录电路，用于从记录介质再现记录信号的再现电路，用于转换来自再现电路的再现信号的再现信号处理电路 转换为具有原始信号格式的再现载波色度信号，以及响应于来自再现信号处理电路的再现的载波色度信号的去加重电路，用于对再现的载波色度信号进行去加重，使得高频 组合在一个vertica 与再现的载波色度信号的低频分量相比，再现的载波色度信号的空间频率相对衰减。
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公开(公告)号：US4405937A
公开(公告)日：1983-09-20
申请号：US274275
申请日：1981-06-16
申请人： Mitsuru Kudo , Isao Nakagawa
发明人： Mitsuru Kudo , Isao Nakagawa
CPC分类号： H04N9/84
摘要： A chrominance signal reproducing apparatus is proposed, in which an oscillation frequency of a first voltage-controlled oscillator is controlled by each of the error control voltages produced from APC and AFC circuits and the signal having the frequency component of the 1/4 output frequency of the first VCO and the output frequency signal of a second VCO are added to produce a sum frequency, which is used to frequency-convert a low-frequency converted carrier chrominance signal to a carrier chrominance signal before low-frequency conversion. The AFC circuit operates only when the frequency F'.sub.sc of the carrier chrominance signal before the low-frequency conversion is deviated 1/8 f.sub.H (f.sub.H : horizontal synchronizing frequency) or above with respect to the carrier chrominance frequency f.sub.sc, so as to apply the control voltage to the first VCO thereby to drive the deviation within the range of .+-.1/8 f.sub.H. When the f'.sub.sc is in the range of f.sub.sc -1/8f.sub.H
摘要翻译： 提出了一种色度信号再现装置，其中第一压控振荡器的振荡频率由APC和AFC电路产生的每个误差控制电压控制，并且具有1/4输出频率的频率分量的信号 添加第一VCO和第二VCO的输出频率信号以产生和频率，其用于在低频转换之前将低频转换载波色度信号频率转换为载波色度信号。 AFC电路仅在低频转换前的载波色度信号的频率F'sc相对于载波色度频率fsc偏离1/8 fH（fH：水平同步频率）以上时进行工作，以适用 到第一VCO的控制电压，从而驱动偏差在+/- 1/8 fH的范围内。 当f'sc在fsc-1 / 8fH
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公开(公告)号：US4652938A
公开(公告)日：1987-03-24
申请号：US686583
申请日：1984-12-26
申请人： Mitsuru Murakami , Masanori Kojima
发明人： Mitsuru Murakami , Masanori Kojima
CPC分类号： H04N11/12
摘要： A digital processing circuit for a video signal digital by processing a composite video signal. More specifically, a composite video signal is separated into a luminance signal and a color signal by means of a Y/C separator (10). The color signal separated is converted into a signal having low frequency by means of a low frequency converter (11) that the signal having low frequency is converted into a digital signal by means of an A/D converter (13). The luminance signal separated is converted into a digital signal by means of an A/D converter (12). Digital signals are transmitted through a transmission line (5). The transmitted luiminance signal is converted into an analog signal by means of a D/A converter (14) so that the analog signal is supplied to a Y/C mixer (17). The transmitted color signal is converted into an analog signal by means of a D/A converter (15) and the analog signal thus obtained is demodulated to a signal having the initial frequency by means of a demodulator (16) so that the signal having the initial frequency is supplied to the Y/C mixer (17). The Y/C mixer (17) mixes the luminance signal converted into the analog signal and the color signal converted to the signal having the initial frequency so that an output signal is provided therefrom.
摘要翻译： 一种用于通过处理复合视频信号的视频信号数字处理电路。 更具体地，通过Y / C分离器（10）将复合视频信号分离成亮度信号和颜色信号。 分离的彩色信号通过低频转换器（11）被转换为具有低频率的信号，低频信号通过A / D转换器（13）转换成数字信号。 分离的亮度信号通过A / D转换器（12）转换为数字信号。 数字信号通过传输线（5）传输。 通过D / A转换器（14）将所发送的亮度信号转换成模拟信号，以便将模拟信号提供给Y / C混频器（17）。 通过D / A转换器（15）将发送的彩色信号转换成模拟信号，并通过解调器（16）将由此获得的模拟信号解调为具有初始频率的信号，使得具有 初始频率被提供给Y / C混合器（17）。 Y / C混合器（17）将转换成模拟信号的亮度信号和转换为具有初始频率的信号的颜色信号混合，从而提供输出信号。
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公开(公告)号：US4538187A
公开(公告)日：1985-08-27
申请号：US416752
申请日：1982-09-10
申请人： Karl H. Rehfeldt
发明人： Karl H. Rehfeldt
摘要： The invention relates to a method of and a circuit arrangement for recording color signals on a video recorder, the polarity of the color-difference signals being inverted in order to reduce noise in the darker colors such as red and blue caused by the tape-head characteristic.
摘要翻译： 本发明涉及一种用于在视频记录器上记录彩色信号的方法和电路装置，色差信号的极性被反转，以便减少由磁头引起的较暗颜色（如红色和蓝色）中的噪声 特性。
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公开(公告)号：US4514753A
公开(公告)日：1985-04-30
申请号：US438679
申请日：1982-11-03
摘要： Spectrum conservation in encoded color TV signals is disclosed. An encoded color video signal is orthogonally re-encoded to eliminate the high frequency color subcarrier component to enable transmission or recording of the resulting video signal without distortions in the amplitude or phase characteristics of the encoded color chrominance component as might be introduced without re-encoding of the signal. Re-encoding is achieved by orthogonally converting the incoming color video signal at a predetermined rate, and specific embodiments are disclosed for achieving an optimum orthogonal pattern of the color subcarrier information. After transmission or recording, the original high frequency color subcarrier information and picture luminance component is reconstructed in a video memory device. Orthogonal re-encoding is shown to be generally useful for re-encoding color TV signals including providing an orthogonally encoded color slow-scan TV signal without use of intermediate memory devices.
摘要翻译： 公开了编码彩色电视信号中的频谱守恒。 经编码的彩色视频信号被正交地重新编码以消除高频彩色副载波分量，以便能够传输或记录所得到的视频信号，而不会在编码的色度色度分量的幅度或相位特性中产生失真，如可能不需要重新编码 的信号。 通过以预定的速率对输入的彩色视频信号进行正交转换来实现重新编码，并且公开了用于实现彩色副载波信息的最佳正交模式的具体实施例。 在传输或记录之后，在视频存储设备中重建原始高频彩色副载波信息和图像亮度分量。 显示正交重新编码对于重新编码彩色TV信号通常是有用的，包括提供正交编码的彩色慢扫描TV信号而不使用中间存储器件。
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9.发明授权
公开(公告)号：US4506313A
公开(公告)日：1985-03-19
申请号：US407624
申请日：1982-08-12
申请人： Takashi Okano
发明人： Takashi Okano
摘要： A time axis correction device for treating a signal having a time axis fluctuation, such as a color video signal reproduced from a video disc, includes a phase modulation network whose phase transmission characteristic is dependent on the phase error of the input signal while the amplitude transmission characteristic is constant.
摘要翻译： 用于处理具有时间轴波动的信号的时间轴校正装置，例如从视频盘再现的彩色视频信号，包括相位调制网络，其相位传输特性取决于输入信号的相位误差，而幅度传输 特性是恒定的。
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公开(公告)号：US4417283A
公开(公告)日：1983-11-22
申请号：US283240
申请日：1981-07-14
申请人： Susumu Hoshimi , Tadashi Kojima
发明人： Susumu Hoshimi , Tadashi Kojima
CPC分类号： G11C5/066 , G11B20/10527 , G11B20/1208 , G11B2020/10537 , G11B2020/10546 , G11B2220/90
摘要： A digital signal processing system in which the actual signal data obtained through digitalization of the information signal and control data of the digital control signals are used for the control of the actual signal data and are transmitted together with a sync signal between two circuits wherein the control data are provided to at least part of an actual signal data transmission line for transmitting the various data and the control data are transmitted during the period of absence of an actual signal data on the transmission line or during the period of the sync signal.
摘要翻译： 一种数字信号处理系统，其中通过信息信号的数字化获得的实际信号数据和数字控制信号的控制数据被用于实际信号数据的控制，并且与两个电路之间的同步信号一起发送，其中控制 将数据提供给用于发送各种数据的实际信号数据传输线的至少一部分，并且在传输线路上或在同步信号的周期期间在实际信号数据不存在的时段期间发送控制数据。
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