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1.发明授权Video signal reproducing apparatus for converting a video signal from a first format to a second format 失效用于将视频信号从第一格式转换成第二格式的视频信号再现装置
公开(公告)号：US4283736A
公开(公告)日：1981-08-11
申请号：US159611
申请日：1980-06-16
IPC分类号： H04N5/7826 , H04N5/783 , H04N5/93 , H04N7/01 , H04N9/79 , H04N9/491 , G11B5/43 , G11B21/08 , H04N5/02
CPC分类号： H04N7/01 , H04N5/783 , H04N5/93 , H04N9/7925
摘要： In a video signal reproducing apparatus for converting a first video signal having a first field frequency to a second video signal having a second field frequency, there are provided a tape scanning device which is made movable in a direction perpendicular to the recording track on a tape, a system for controlling the speed of the scanning device, a system for shifting the scanning device in the aforesaid direction according to the difference between the first and second field frequencies, in order to skip or repeat selected fields so that the video signal is reproduced with the second field frequency. Also provided is a system for converting the number of lines contained in one field of the first video signal. In the above converting system there is included a memory, and the first video signal is written into the memory and read out therefrom so that a predetermined number of lines of the first video signal are discarded or repeated and the reproduced video signal has the required number of lines for each field of the second video signal.
摘要翻译： 在用于将具有第一场频的第一视频信号转换为具有第二场频的第二视频信号的视频信号再现装置中，提供了一种带扫描装置，其可在与带上的记录轨道垂直的方向上移动 ，用于控制扫描装置的速度的系统，用于根据第一和第二场频之间的差异在上述方向上移动扫描装置的系统，以便跳过或重复所选择的场，使得视频信号被再现 具有第二场频率。 还提供了一种用于转换包含在第一视频信号的一个场中的行数的系统。 在上述转换系统中包括存储器，第一视频信号被写入存储器并从中读出，使得第一视频信号的预定数量的行被丢弃或重复，并且再现的视频信号具有所需数量 的第二视频信号的每个场的行。
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2.发明授权Method and apparatus for correcting tracking errors of a transducer which scans parallel record tracks 失效用于校正扫描并行记录轨道的换能器的跟踪误差的方法和装置
公开(公告)号：US4141047A
公开(公告)日：1979-02-20
申请号：US832368
申请日：1977-09-12
申请人： Masahiro Kambara , Minoru Morio , Hidehiko Okada , Yukio Kubota
发明人： Masahiro Kambara , Minoru Morio , Hidehiko Okada , Yukio Kubota
CPC分类号： G11B5/588
摘要： A method and apparatus for correcting tracking errors of a transducer which scans successive, parallel, adjacent record tracks of a record medium so as to reproduce information signals therefrom. The information signals, which may comprise video signals, are recorded in the parallel record tracks, and predetermined signals also are recorded at predetermined locations in the information signals. When the information and predetermined signals are played back, at least one cross-talk predetermined signal which is recorded in at least one adjacent track also is played back. The cross-talk predetermined signal is detected and a control signal is produced in response to the level of the detected cross-talk predetermined signal. The position of the transducer with respect to the track being scanned thereby is adjusted in accordance with the control signal. In one embodiment, the control signal is recorded at a predetermined location in each horizontal blanking interval of the video signals; and the horizontal blanking intervals which are recorded in one track are displaced with respect to the horizontal blanking intervals which are recorded in the adjacent track. This displacement of the horizontal blanking intervals, and thus the predetermined signals, in adjacent tracks facilitates the detection of the cross-talk predetermined signals which, for example, may comprise pilot signals.
摘要翻译： 一种用于校正扫描记录介质的连续的，平行的相邻记录轨道的换能器的跟踪误差的方法和装置，以便再现信息信号。 可以包括视频信号的信息信号被记录在并行记录轨道中，并且预定信号也被记录在信息信号中的预定位置处。 当重放信息和预定信号时，还播放记录在至少一个相邻轨道中的至少一个串扰预定信号。 检测到串扰预定信号，并响应于检测到的串扰预定信号的电平产生控制信号。 换能器相对于被扫描的轨道的位置根据控制信号进行调整。 在一个实施例中，控制信号被记录在视频信号的每个水平消隐间隔中的预定位置; 并且记录在一个轨道中的水平消隐间隔相对于记录在相邻轨道中的水平消隐间隔而移位。 在相邻轨道中水平消隐间隔的偏移以及因此预定信号的偏移便于检测例如可能包括导频信号的串扰预定信号。
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公开(公告)号：US4148082A
公开(公告)日：1979-04-03
申请号：US833346
申请日：1977-09-14
申请人： Hidehiko Okada , Minoru Morio , Masahiro Kambara , Yukio Kubota
发明人： Hidehiko Okada , Minoru Morio , Masahiro Kambara , Yukio Kubota
IPC分类号： H04N5/7826 , G11B5/588 , G11B5/58
CPC分类号： G11B5/588
摘要： Tracking control apparatus for a signal reproducing system of the type wherein at least one transducer scans successive parallel tracks on a record medium in which information signals, such as video signals, are recorded. The transducer preferably is of the rotary type so that, during its orbit, it is brought into and then out of reproducing relation with respect to the record medium. Any deviation between the scanning trace of the transducer across the medium and a given track which is being scanned is detected, and a control signal is produced as a function of this detected deviation. The transducer is supported by an adjustable support which is responsive to the control signal so as to displace the transducer transversely of the given track by an amount determined by the control signal. A predetermined sample of the control signal is produced while the transducer scans the given track, and this predetermined sample is stored. Prior to the time that the transducer moves into a reproducing relation with respect to the medium, the stored sample is supplied to the adjustable support so that the transducer is pre-displaced before signals are reproduced thereby.
摘要翻译： 用于这种类型的信号再现系统的跟踪控制装置，其中至少一个传感器扫描记录介质的连续的并行轨道，其中记录诸如视频信号的信息信号。 换能器优选地是旋转型的，使得在其轨道期间，其被转换成相对于记录介质再生关系。 在介质上的换能器的扫描轨迹与被扫描的给定轨迹之间的任何偏差被检测，并且根据该检测到的偏差产生控制信号。 传感器由可调节的支撑件支撑，该支撑件响应于控制信号，以便将传感器横向于给定的轨道移动由控制信号确定的量。 当传感器扫描给定的轨道时，产生控制信号的预定样本，并且存储该预定样本。 在传感器相对于介质移动到再现关系的时间之前，将存储的样品提供给可调节的支撑件，使得在信号被再现之前换能器被预位移。
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公开(公告)号：US4141048A
公开(公告)日：1979-02-20
申请号：US832369
申请日：1977-09-12
申请人： Yukio Kubota , Minoru Morio , Hidehiko Okada , Masahiro Kambara
发明人： Yukio Kubota , Minoru Morio , Hidehiko Okada , Masahiro Kambara
IPC分类号： H04N5/7826 , G11B5/027 , G11B5/588 , G11B15/467 , G11B21/10 , G11B5/52 , G11B21/24
CPC分类号： G11B5/588
摘要： A video signal reproducing system having a magnetic head deflector for automatic head scan tracking, the deflector being displaced corresponding to an error signal obtained from crosstalk pilot signals in a reproduced video signal.
摘要翻译： 一种具有用于自动头扫描跟踪的磁头偏转器的视频信号再现系统，偏转器对应于从再现的视频信号中的串扰导频信号获得的误差信号而移位。
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5.发明授权Avoidance of disturbance of horizontal sync signals in video signal reproduced at other than standard tape speed 失效避免在标准磁带速度以外再现的视频信号中的水平同步信号干扰
公开(公告)号：US4268875A
公开(公告)日：1981-05-19
申请号：US031515
申请日：1979-04-19
摘要： In a recording and reproducing apparatus in which a video signal is recorded by at least one rotary head in successive parallel tracks on a recording medium while the latter is being driven at a predetermined or standard speed in a direction to which said tracks are skewed, and in which the recorded video signal is reproduced by the rotary head repeatedly scanning the recording medium while the latter is selectively driven at the standard speed, as in the normal reproducing mode, or at an arbitrary speed other than such standard speed, for example, at zero speed for the still-motion reproducing mode, or at speeds less than and greater than the standard speed for the slow-motion and quick-motion reproducing modes, respectively; a variable delay circuit is operative during reproducing with the recording medium being driven at an arbitrary speed other than standard speed for variably delaying the video signal reproduced by said rotary head, and a control circuit controls the amounts by which the variable delay circuit delays the reproduced video signal in accordance with the arbitrary speed to cause fields of the reproduced video signal which are contiguous or next adjacent in point of time to be continuous in the delayed video signal and to contain respective horizontal synchronizing signals which are in predetermined phase relationships to each other, that is, precisely in phase or out of phase by one-half horizontal period, as when even- and odd-numbered fields are to be interlaced.
摘要翻译： 在记录和再现装置中，其中视频信号由记录介质上的连续平行轨道中的至少一个旋转磁头记录，而后者以预定或标准速度在所述轨道倾斜的方向上被驱动，以及 其中记录的视频信号由旋转头重复地扫描记录介质，而后者以标准速度选择性地被驱动，如在正常再现模式中，或以除这种标准速度以外的任意速度，例如在 用于静止运动再现模式的零速度或小于和大于慢动作和快速运动再现模式的标准速度的速度; 可变延迟电路在再现期间操作，其中以不同于标准速度的任意速度驱动记录介质，用于可变地延迟由所述旋转磁头再现的视频信号，并且控制电路控制可变延迟电路延迟再现的数量 视频信号根据任意速度使得在延迟视频信号中连续或相邻连续或相邻的重放视频信号的场相互连续，并且包含彼此处于预定相位关系的各个水平同步信号 ，也就是说，当偶数和奇数场将被隔行扫描时，精确地相位或相位相差半个水平周期。
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公开(公告)号：US4115820A
公开(公告)日：1978-09-19
申请号：US630332
申请日：1975-11-10
申请人： Minoru Morio , Masahiro Kambara
发明人： Minoru Morio , Masahiro Kambara
摘要： A system for reproducing video signals recorded on a magnetic recording medium as a suppressed-carrier modulated signal in which the video information is carried primarily on only one sideband and the frequency of the suppressed carrier is within the band occupied by the video signals prior to modulation. Jitter components in the reproduced signals are substantially cancelled out.
摘要翻译： 用于再现记录在磁记录介质上的视频信号的系统作为抑制载波调制信号，其中视频信息主要仅在一个边带上被承载，并且抑制载波的频率在调制之前由视频信号占据的频带内 。 基本上消除了再生信号中的抖动分量。
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7.发明授权Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof 失效用于修改视频信号以防止其未经授权的记录和再现的方法和装置
公开(公告)号：US4100575A
公开(公告)日：1978-07-11
申请号：US778709
申请日：1977-03-17
申请人： Minoru Morio , Masahiro Kambara
发明人： Minoru Morio , Masahiro Kambara
CPC分类号： H04N5/913 , H04N2005/91314
摘要： A method of and apparatus for modifying a video signal such that a video picture can be reproduced on a television receiver in response to the modified video signal, but if the modified video signal is transmitted and then recorded on a video signal recorder, an accurate video picture cannot be reproduced if that recorded modified video signal subsequently is played back. The vertical blanking interval containing one set of equalizing pulses followed by a set of vertical synchronizing pulses followed by another set of equalizing pulses is modified by replacing a portion of the vertical synchronizing pulses and a portion of the set of equalizing pulses following the vertical synchronizing pulses with simulated equalizing pulses in at least some of the vertical blanking intervals. The amplitude and frequency of the simulated equalizing pulses are equal to that of the actual equalizing pulses.In one embodiment, the modified video signal is transmitted via, for example, cable or RF transmission. In another embodiment, the modified video signal is recorded on a master recording medium. If the master recording medium subsequently is reproduced, the resulting, reproduced modified video signal can be transmitted for video display. However, if a copy of the master recording medium is made, an accurate video picture cannot be reproduced from subsequent reproduction of the copy medium.
摘要翻译： 一种用于修改视频信号的方法和装置，使得可以在电视接收机上响应于修改的视频信号再现视频图像，但是如果修改的视频信号被发送并随后记录在视频信号记录器上，则精确的视频 如果随后播放所记录的修改后的视频信号，则无法再现图像。 通过替换垂直同步脉冲的一部分和垂直同步脉冲之后的一组均衡脉冲的一部分，包含一组均衡脉冲后跟一组垂直同步脉冲和随后的另一组均衡脉冲的垂直消隐间隔被修改 在至少一些垂直消隐间隔中具有模拟均衡脉冲。 仿真均衡脉冲的振幅和频率等于实际均衡脉冲的振幅和频率。
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8.发明授权Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof 失效用于修改视频信号以防止其未经授权的记录和再现的方法和装置
公开(公告)号：US4163253A
公开(公告)日：1979-07-31
申请号：US780242
申请日：1977-03-22
申请人： Minoru Morio , Masahiro Kambara
发明人： Minoru Morio , Masahiro Kambara
CPC分类号： H04N5/913 , H04N2005/91314
摘要： A method of and apparatus for modifying a video signal such that a video picture can be reproduced by a video display device in response to the modified video signal, but if the modified video signal is transmitted and then recorded on a video signal recorder, a satisfactory video picture cannot be reproduced if that recorded modified video signal subsequently is played back. A pulse whose amplitude is substantially equal to the peak white level of the video signal is inserted into respective horizontal blanking intervals of the video signal. If this modified video signal is recorded on a conventional type of video signal recorder, the presence of the inserted pulse signal is detected by an automatic gain control (AGC) detector which, in turn, controls an AGC amplifier to substantially attenuate the modified video signal which then is recorded.
摘要翻译： 一种用于修改视频信号的方法和装置，使得可以由视频显示装置响应于修改的视频信号再现视频图像，但是如果修改的视频信号被发送并随后记录在视频信号记录器上，则令人满意 如果随后播放所记录的修改后的视频信号，则无法再现视频图像。 其幅度基本上等于视频信号的峰值白电平的脉冲被插入到视频信号的相应的水平消隐间隔中。 如果这种修改的视频信号被记录在常规类型的视频信号记录器上，则插入的脉冲信号的存在由自动增益控制（AGC）检测器检测，自动增益控制（AGC）检测器又控制AGC放大器以基本上衰减修改的视频信号 然后记录。
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9.发明授权
公开(公告)号：US06072174A
公开(公告)日：2000-06-06
申请号：US129229
申请日：1998-08-05
IPC分类号： G01D5/26 , G01B11/00 , G01D5/34 , G01D5/58 , G01P3/486 , G01P3/487 , G01P3/488 , G02F1/09 , G02F1/01
摘要： A method of magneto-optically modulating light comprises the steps of linearly polarizing the light on its transmission path, and placing a magneto-optic effect element on the transmission path of the polarized light with the spontaneous magnetization direction of the magneto-optic effect element being substantially parallel with the transmission path. The plane of polarization of the polarized light is rotated about the transmission path in the absence of the magnetic field applied to the magneto-optic effect element having the polarized light pass therethrough. The method further comprises the step of applying the magnetic field to the magneto-optic effect element with its internal magnetization being oriented in a direction perpendicular to the transmission path. The plane of polarization of the polarized light is maintained in its initial state in the presence of the magnetic field applied to the magneto-optic effect element having the polarized light pass therethrough. When the object approaches the magneto-optic effect element, the applied magnetic field is modulated to have the direction of the internal magnetization of the magneto-optic effect element varied. As a result, the plane of polarization of the polarized light is rotated about the transmission path from its initial state when the polarized light passes through the magneto-optic effect element. According to the method, the light can be modulated by way of the object inoperable to apply the magnetic field to the magneto-optic effect element but capable of modulating the magnetic field of the magneto-optic effect element.
摘要翻译： 磁光调制光的方法包括以下步骤：使光在其传输路径上线性偏振，并将磁光效应元件放置在偏振光的传输路径上，其中磁光效应元件的自发磁化方向为 基本上与传输路径平行。 在没有施加到具有偏振光通过的磁光效应元件的磁场的情况下，偏振光的偏振面绕传输路径旋转。 该方法还包括将磁场施加到磁光效应元件的步骤，其内部磁化在垂直于传输路径的方向上取向。 在施加到具有偏振光通过的磁光效应元件的磁场的存在下，偏振光的偏振面保持在其初始状态。 当物体接近磁光效应元件时，所施加的磁场被调制成具有变化的磁光效应元件的内部磁化方向。 结果，当偏振光通过磁光效应元件时，偏振光的偏振面从其初始状态围绕传输路径旋转。 根据该方法，光可以通过不能操作的物体进行调制，以将磁场施加到磁光效应元件，但是能够调制磁光效应元件的磁场。
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