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公开(公告)号：US4729024A
公开(公告)日：1988-03-01
申请号：US840942
申请日：1986-03-18
摘要： A synchronizing pulse signal generation device separates horizontal and vertical synchronizing signals from a video signal; generates a clock signal which is phase locked relative to the phase of the horizontal synchronizing signal; and generates, by using the clock signal, a synchronizing pulse signal which is phase locked relative to the vertical and horizontal synchronizing signals.
摘要翻译： 同步脉冲信号发生装置从视频信号中分离水平和垂直同步信号; 生成相对于水平同步信号的相位相位锁定的时钟信号; 并且通过使用时钟信号产生相对于垂直和水平同步信号相位锁定的同步脉冲信号。
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42.发明授权Rotary recording medium having different video signals recorded on mutually adjacent tracks and reproducing apparatus therefor 失效具有记录在相邻轨道上的不同视频信号的旋转记录介质及其再现装置
公开(公告)号：US4626930A
公开(公告)日：1986-12-02
申请号：US712908
申请日：1985-03-15
申请人： Hiroyuki Sugiyama
发明人： Hiroyuki Sugiyama
IPC分类号： H04N5/93 , G09B5/06 , G11B7/00 , G11B7/004 , G11B9/06 , G11B20/02 , G11B21/02 , H04N5/91 , H04N5/92 , H04N5/76 , H04N5/78
CPC分类号： H04N5/92 , G09B5/065 , G11B21/022 , H04N5/9205
摘要： A rotary recording medium is recorded with video signals on a spiral track thereon, and the video signals are related to different programs with respect to every one track turn. A reproducing apparatus comprises a reproducing element for scanning over the spiral track on the rotary recording medium, and a circuit for shifting the reproducing element to an adjacent track turn at a changeover position of the recorded video signals related to the different programs on each track turn so that the video signal related to the same program is continuously reproduced.
摘要翻译： 在其上的螺旋轨道上记录有视频信号的旋转记录介质，并且视频信号相对于每一个轨道转弯与不同的程序相关。 再现装置包括用于在旋转记录介质上的螺旋轨道上进行扫描的再现元件，以及用于在与每个轨道转弯上的不同程序相关的记录视频信号的转换位置将再现元件移动到相邻轨道转弯的电路 使得与相同程序相关的视频信号被连续再现。
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公开(公告)号：US4243849A
公开(公告)日：1981-01-06
申请号：US36512
申请日：1979-05-07
申请人： Takeshi Goshima , Hideaki Sato , Takao Tsuji
发明人： Takeshi Goshima , Hideaki Sato , Takao Tsuji
摘要： A signal recording device comprises information means for introducing frequency-modulated information signals, generator means for generating control signals corresponding to the frequencies of the information signals introduced by the information means, control means for varying the level of signals applied thereto in accordance with the output of the generator means, input means for applying the information signals to the control means, modulator means for applying, as modulation signals, the level-varied information signals provided by the control means, and beam generating means for generating a beam the intensity of which is to be varied by the modulator means.
摘要翻译： 信号记录装置包括用于引入频率调制信息信号的信息装置，用于产生对应于由信息装置引入的信息信号的频率的控制信号的发生装置，用于根据输出改变施加到其上的信号电平的控制装置 发生器装置的输入装置，用于将信息信号施加到控制装置的调制器装置，用于作为调制信号施加由控制装置提供的电平变化的信息信号;以及光束产生装置，用于产生光束的强度， 将由调制装置来改变。
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公开(公告)号：US4165518A
公开(公告)日：1979-08-21
申请号：US770315
申请日：1977-02-18
申请人： Jun Hirai
发明人： Jun Hirai
摘要： In apparatus for recording and/or reproducing video signals in successive parallel tracks on a record medium, and in which at least a portion of the video signals, for example, the luminance component of color video signals, is recorded as a frequency modulation on a carrier, the carrier of the frequency modulated portion of the video signals, as recorded in tracks that are next adjacent to each other, has different first and second carrier frequencies, respectively, which are in frequency interleaving relation to each other for minimizing cross-talk when reproducing the signals thus recorded. The shifting of the carrier frequency for the frequency modulated luminance component is conveniently achieved by selectively applying different first and second bias voltages to the luminance component as supplied to a frequency modulator, with the difference between such bias voltages being effective in the modulator to establish the desired difference between the carrier frequencies. On reproducing, the frequency modulated luminance component is demodulated, and changes in level of the demodulated luminance component corresponding to the different carrier frequencies with which the frequency modulated luminance component was recorded in next adjacent tracks, respectively, are eliminated, for example, by selectively applying suitably different bias voltages to the demodulated luminance component.
摘要翻译： 在用于在记录介质上的连续平行轨道中记录和/或再现视频信号的装置中，并且其中视频信号的至少一部分（例如，彩色视频信号的亮度分量）被记录为频率调制 记录在彼此相邻的轨道中的视频信号的频率调制部分的载波分别具有不同的第一和第二载波频率，它们彼此处于频率交织关系中，以使串扰最小化 当再现这样记录的信号时。 频率调制亮度分量的载波频率偏移通过选择性地将不同的第一和第二偏置电压施加到提供给频率调制器的亮度分量来方便地实现，其中这种偏置电压之间的差异在调制器中有效，以建立 载波频率之间的期望差异。 在再现时，对频率调制亮度分量进行解调，并且分别对与在下一个相邻轨道中记录频率调制亮度分量的不同载波频率相对应的解调亮度分量的电平的变化消除，例如，通过选择性地 对解调的亮度分量施加适当的不同偏置电压。
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公开(公告)号：US4083019A
公开(公告)日：1978-04-04
申请号：US546757
申请日：1976-12-01
申请人： Takeshi Hamada , Yoshio Ishigaki , Masayuki Hongu
发明人： Takeshi Hamada , Yoshio Ishigaki , Masayuki Hongu
CPC分类号： H04N5/92 , H03K3/2821 , H03K7/06 , H04N5/91
摘要： A multivibrator circuit has a main constant current source through which the main portion of the current of the multivibrator circuit is supplied and a by-pass current source through which a portion of the current to be supplied to the main constant current source is supplied, whereby the duty cycle of the multivibrator circuit is controlled. When the by-pass current is changed, the frequency of the multivibrator circuit is changed. The frequency of the multivibrator, when used as the frequency-modulated oscillator in a video tape recorder, may thus be set regardless of the signal clipping level and signal clamping level in a video recording circuit of the video tape recorder.
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公开(公告)号：US3943274A
公开(公告)日：1976-03-09
申请号：US346889
申请日：1973-04-02
申请人： Gerhard Dickopp , Manfred Potter , Otto Brehm
发明人： Gerhard Dickopp , Manfred Potter , Otto Brehm
摘要： A demodulation system of a playback device for a carrier frequency signal containing both useful information in the zero passages of the signal and signal break-ins which occur in the playback device. The system includes a limiter for limiting in an asymmetrical manner a signal fed to it and a demodulator coupled to the output of the limiter. A highpass filter is connected between the limiter and the demodulator so as to couple the output signal from the limiter to the demodulator. The highpass filter substantially passes only the useful information portion of the carrier signal and suppresses any break-ins introduced into the signal.
摘要翻译： 一种用于载波频率信号的重放装置的解调系统，其包含发生在播放装置中的信号和信号中断的零通道中的有用信息。 该系统包括限制器，用于以非对称方式限制馈送给它的信号和耦合到限幅器的输出的解调器。 高通滤波器连接在限幅器和解调器之间，以将来自限幅器的输出信号耦合到解调器。 高通滤波器基本上仅通过载波信号的有用信息部分，并且抑制引入到信号中的任何突发。
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47.发明授权Apparatus and method for recording and reproducing a video signal in successive record tracks on a record sheet without guard bands between adjacent tracks 失效用于在记录纸上的连续记录轨道中记录和再现视频信号而在相邻轨道之间没有保护带的装置和方法
公开(公告)号：US3911483A
公开(公告)日：1975-10-07
申请号：US42584573
申请日：1973-12-18
申请人： SONY CORP
发明人： KIHARA NOBUTOSHI , MACHIDA YUKIHIKO
IPC分类号： H04N5/922 , G11B20060101 , G11B5/027 , H04N5/76 , H04N5/781 , H04N5/782 , H04N5/91 , H04N5/92 , H04N9/80 , H04N5/78 , G11B5/22 , G11B21/10
摘要： Video signals are recorded in successive record tracks on a record sheet without guard bands or spaces between adjacent tracks so as to enhance the utilization of the record sheet, and interference between the signals recorded in adjacent tracks is avoided during reproduction thereof by recording such video signals in adjacent tracks with their respective synchronizing signals aligned in the direction at right angles to the length of the tracks and further with carrier components of the signals recorded in the adjacent tracks being of the same frequency and having the same phase relation to the effective scanning direction during recording. During reproduction of the signals thus recorded, non-interfering signals recorded in two or more adjacent tracks are simultaneously reproduced, for example, as by a reproducing magnetic head having a gap width substantially greater than the pitch of the successive tracks in which the signals are magnetically recorded, so as to enhance the resolution and S/N ratio of the reproduced signals and further to avoid the necessity of a servo tracking arrangement.
摘要翻译： 视频信号被记录在记录纸上的连续记录轨道中，而没有相邻轨道之间的保护带或间隔，以增强记录纸的利用率，并且通过记录这些视频信号来避免记录在相邻轨道中的信号之间的干扰 在相邻轨道中，它们各自的同步信号在与轨道的长度成直角的方向上对齐，并且还记录在相邻轨道中的信号的载波分量具有相同的频率并且与有效扫描方向具有相同的相位关系 在录制过程中。 在再现由此记录的信号时，记录在两个或更多个相邻轨道中的非干扰信号被同时再现，例如，通过重放磁头，其间隙宽度基本上大于连续轨迹的间距， 磁记录，以提高再现信号的分辨率和信噪比，并进一步避免伺服跟踪装置的必要性。
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公开(公告)号：US3833758A
公开(公告)日：1974-09-03
申请号：US26964472
申请日：1972-07-07
申请人： BELL & HOWELL CO
发明人： FERRARI L
CPC分类号： H04N5/92 , H04N5/772 , Y10S358/906
摘要： Several video recording and playback methods and apparatus are disclosed in which played-back video information is displayed to a video camera which, in turn, produces electrical video signals for display by a video display set, such as a conventional television receiver. The video camera may operate at different scanning rates during recording and during playback. The device that displays the played-back video information to the camera may operate at a scanning rate different from the camera''s scanning rate during playback. Also, the device for displaying the playedback video information to the camera may be synchronized by played-back synchronization information which is affected by timing errors. No automatic frequency control is then employed in the particular display device.
摘要翻译： 公开了一些视频记录和播放方法和装置，其中再现的视频信息被显示给摄像机，摄像机又产生用于由诸如常规电视接收机的视频显示器组显示的电视频信号。 视频摄像机可以在记录期间和播放期间以不同的扫描速率操作。 向相机显示回放的视频信息的设备可以在播放期间以与相机的扫描速率不同的扫描速率进行操作。 此外，用于向相机显示回放的视频信息的装置可以通过受定时误差影响的重放同步信息同步。 然后在特定显示装置中不采用自动频率控制。
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49.发明授权Circuit arrangement for compensating drop-out in the reproduction of signals recorded on a record carrier 失效用于在记录载体上记录的信号的复制中补偿丢失的电路布置
公开(公告)号：US3824620A
公开(公告)日：1974-07-16
申请号：US27134872
申请日：1972-07-13
申请人： PHILIPS CORP
发明人： LANGER E
摘要： A playback system for a video signal recorded on a carrier signal has a drop-out compensation circuit. This circuit has two channels, one of which delays the reproduced signal. If a dropout occurs a switch selects the delayed channel. Demodulators are coupled to the switch in each channel and compensate for the switching time of the switch.
摘要翻译： 用于记录在载波信号上的视频信号的重放系统具有一个丢失补偿电路。 该电路具有两个通道，其中之一延迟再生信号。 如果出现故障，交换机将选择延迟通道。 解调器耦合到每个通道中的开关，并补偿开关的切换时间。
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公开(公告)号：US3748386A
公开(公告)日：1973-07-24
申请号：US3748386D
申请日：1972-04-03
IPC分类号： H04N5/93 , G11B20/02 , H03K5/007 , H04N5/16 , H04N5/18 , H04N5/92 , H04N5/931 , H04N5/95 , H04N5/953 , H04N5/04
摘要： A time-base error correction system for a video signal employing a plurality of serially connected delay lines. Circuit means are conditioned to detect the closest timing match between a reference synchronizing signal and the video signal as it appears at various points along the delay path and to connect the appropriate delay line point or junction to an output at which the correctly delayed video signal appears. Featured circuitry provides for eliminating the erroneous leading edge of a video synchronizing pulse distorted by changes in the selected delay point and for compensating for variations in d.c. offset of the video signal introduced by differential delay line path effects.
摘要翻译： 一种采用多个串行连接的延迟线的视频信号的时基误差校正系统。 电路装置被调节为检测参考同步信号和视频信号之间最接近的定时匹配，因为它在沿着延迟路径的不同点处出现，并且将适当的延迟线点或结点连接到出现正确延迟的视频信号的输出端 。 特色电路提供消除视频同步脉冲的错误前沿，通过所选延迟点的变化而变形，并补偿直流电流的变化。 通过差分延迟线路路径效应引入的视频信号的偏移。
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