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公开(公告)号：US5241434A
公开(公告)日：1993-08-31
申请号：US697022
申请日：1991-05-08
CPC分类号： G11B15/602 , G11B15/43 , G11B5/588
摘要： The specification discloses a magnetic recording signal reproducing apparatus for controlling a magnetic tape and reproducing magnetic heads.In the magnetic recording signal reproducing apparatus of the invention, a magnetic tape which is moved for magnetic heads attached to a rotary cylinder is traced by the magnetic heads and signals recorded on tracks of the magnetic tape are reproduced. A construction of the apparatus includes a tracking control system, a tape tension control system, and an apparatus for selectively switching operations of both of the control systems. The tracking control system includes: an apparatus, attached to the rotary cylinder, for moving the magnetic heads in the width direction of the tracks in accordance with a tracking signal; and an apparatus for sampling the signals detected by the magnetic heads, for comparing a preceding sampled value with a present sampled value, and for generating the tracking signal such that the present sampled value is larger than the preceding sampled value. The tape tension control system includes: an apparatus for detecting changes per predetermined time in levels of the signals detected by the magnetic head; an apparatus for giving a tension to the moving magnetic tape and for adjusting the tension in accordance with a tension control signal; and an apparatus for generating the tension control signal to adjust the tension according to change amounts per predetermined time of the signal levels to a reference value. Further, the switching apparatus includes switching means for receiving the signals detected by the magnetic heads and for selectively energizing either one of the tracking control system and the tape tension control system in accordance with the levels of the signals. Another magnetic recording signal reproducing apparatus according to the invention comprises: two magnetic heads arranged to a cylinder so as to simultaneously trace adjacent tracks; an apparatus, attached to the cylinder, for individually moving the two magnetic heads in the width direction of the tracks in accordance with a head position control signal; and an apparatus for generating the head position control signal to move the magnetic heads in the width direction of the tracks in a manner such that when the recorded signals are reproduced at a speed different from a tape moving speed upon recording, amplitude levels of the reproduction signals detected by the two magnetic heads locating at predetermined track positions have a relation of opposite phases.
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公开(公告)号：US6089485A
公开(公告)日：2000-07-18
申请号：US187708
申请日：1998-11-06
CPC分类号： G11B15/093 , G11B15/22 , G11B15/46 , G11B15/48 , G11B15/54
摘要： On the occasion of stopping the tape running at a high speed, a winding radius of the tape supply reel is detected to set the tape deceleration rate (a) on the basis of the detected winding radius of the supply reel. After the tape running speed is decelerated up to the allowable speed VL in the predetermined deceleration rate (a), the tape is stopped by effectuating the brake. Thereby, the tape can be driven at the speed higher than the allowable speed VL without generating any damage, enabling reduction of time required for the fast-forward/rewind operation. This can improve application flexibility by providing a couple of tape running modes at the first high speed V1 which is higher than the allowable speed VL and the second high speed V2 which is lower than the allowable speed VL. In addition, running of the tape can be ceased within the predetermined time t from the input of the stop command signal by specifying the maximum speed Vmax depending on the preset deceleration rate (a) and limiting the tape running speed with the maximum speed Vmax.
摘要翻译： 在停止磁带高速运行的情况下，检测带供带盘的卷绕半径，以根据检测到的供带盘的卷绕半径设定带减速度（a）。 在磁带运行速度以预定减速率（a）减速到允许速度VL之后，通过实施制动来停止磁带。 因此，可以以高于允许速度VL的速度驱动带子，而不产生任何损坏，从而能够减少快进/快退操作所需的时间。 这可以通过提供高于允许速度VL和低于容许速度VL的第二高速V2的第一高速V1提供几个带运行模式来提高应用灵活性。 此外，通过根据预设减速度（a）指定最大速度Vmax，以最大速度Vmax限制带运行速度，可以在从停止指令信号的输入起的预定时间t内停止带的运行。
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公开(公告)号：US4984083A
公开(公告)日：1991-01-08
申请号：US373630
申请日：1989-06-28
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： An image processing system comprising a first and second video signal sources providing a main-field video signal and sub-field video signal, respectively, means for compressing the sub-field video signal on the time axis, and a signal merging unit which merges the compressed sub-field video signal into the main-field video signal and delivers the resulting signal to a television receiver set, wherein the signal compressing means comprising a dual-port memory having a first and second ports and operating to compress the sub-field video signal on the time axis and store the compressed signal, and control means for controlling the reading and writing of the memory for the sub-field video signal, the control means comprising a first control section for writing the sub-field video signal into the first port of said memory, a second control section for transferring a signal from the first port to the second port, and a third control section for reading out a signal from the second port, said memory implementing the reading operation and writing operation in asynchronous manner.
摘要翻译： 一种图像处理系统，包括分别提供主视频信号和副场视频信号的第一和第二视频信号源，用于在时间轴上压缩子场视频信号的装置，以及合并该视场信号的信号合并单元 将压缩的子场视频信号转换成主视频信号并将所得到的信号传送到电视接收机组，其中信号压缩装置包括具有第一和第二端口的双端口存储器，并且操作以压缩子场视频 信号在时间轴上并存储压缩信号，以及控制装置，用于控制子场视频信号的存储器的读和写，该控制装置包括第一控制部分，用于将子视频信号写入第一 所述存储器的端口，用于将信号从第一端口传送到第二端口的第二控制部分，以及用于从第二端口读出信号的第三控制部分， d存储器以异步方式实现读操作和写操作。
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公开(公告)号：US4543516A
公开(公告)日：1985-09-24
申请号：US682259
申请日：1984-12-17
申请人： Yasunori Kobori , Kaneyuki Okamoto , Isao Fukushima , Masataka Sekiya , Hideo Nishijima , Kenji Kano , Tetsuo Sakae
发明人： Yasunori Kobori , Kaneyuki Okamoto , Isao Fukushima , Masataka Sekiya , Hideo Nishijima , Kenji Kano , Tetsuo Sakae
CPC分类号： H02P23/186 , Y10S388/912 , Y10S388/922
摘要： Disclosed is a speed and phase control system for a moving apparatus driven by an electric motor, or the like, and provided with a speed control system for controlling the moving apparatus to an initially set speed, a phase control system for synchronizing the phase of the moving apparatus with a reference signal, and an error correction device storing therein a target value of and for comparing an actual speed or a phase of the moving apparatus with the target value to detect an error therebetween to thereby correct the initially set value in accordance with the error, whereby control is made such that the moving apparatus is operated at the target value of speed and phase thereof. Further, the error correction device is cut off from the speed control system when the speed reaches a value near the target value and at the same time the operation of the phase control system is started.
摘要翻译： 公开了一种用于由电动机等驱动的移动装置的速度和相位控制系统，并且设置有用于将移动装置控制到初始设定速度的速度控制系统，用于使运动装置的相位同步的相位控制系统 具有参考信号的移动装置和其中存储有移动装置的实际速度或相位的目标值和用于比较目标值的误差校正装置，以检测其间的误差，从而根据 该误差由此进行控制，使得移动装置以其速度和相位的目标值运行。 此外，当速度达到接近目标值的值并且同时开始相位控制系统的操作时，纠错装置从速度控制系统切断。
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5.发明授权
公开(公告)号：US5138505A
公开(公告)日：1992-08-11
申请号：US454957
申请日：1989-12-22
IPC分类号： H04N5/7826 , G11B5/588 , G11B15/467 , G11B15/473 , G11B20/20
CPC分类号： G11B15/4733 , G11B15/4675 , G11B20/20 , G11B5/588
摘要： A tracking apparatus for a magnetic recording and playback device of a helical scan system including at least one audio head and at least one video head provided on a rotating cylinder for enabling recording and playback of an audio signal and a video signal onto and from a magnetic tape which is driven by a capstan motor. The tracking apparatus includes a tracker for detecting an audio tracking error of the audio head for an audio track of the magnetic tape and for generating a tracking compensation signal corresponding to the amount of audio tracking error, and a controller responsive to the tracking compensation signal for controlling the rotary phase of the capstan motor in accordance therewith so that the audio head correctly tracks the audio track of the magnetic tape and is controlled independently of control of the video head for video tracking error.
摘要翻译： 一种用于螺旋扫描系统的磁记录和重放装置的跟踪装置，包括至少一个音频头和设置在旋转圆柱上的至少一个视频头，用于使音频信号和视频信号能够从磁性记录和重放 磁带由主导轴电机驱动。 跟踪装置包括跟踪器，用于检测用于磁带的音频轨道的音频头的音频跟踪误差，并用于产生对应于音频跟踪误差量的跟踪补偿信号，以及响应于跟踪补偿信号的控制器 控制主导马达的旋转相位，使得音频头正确地跟踪磁带的音频轨道，并且独立于视频磁头的控制来控制视频跟踪误差。
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公开(公告)号：US4757394A
公开(公告)日：1988-07-12
申请号：US792271
申请日：1985-10-28
IPC分类号： H04N5/7826 , G11B5/008 , G11B5/584 , G11B15/087 , G11B15/467 , H04N5/782
CPC分类号： G11B5/00878 , G11B15/087 , G11B15/4675
摘要： An auto-tracking apparatus of a magnetic recording/reproducing apparatus has a circuit for discriminating whether the audio signals recorded on a magnetic tape to be reproduced were recorded by audio rotary heads or a fixed head, and a circuit for selecting outputs of the audio rotary heads in the case of the Hi-Fi recorded magnetic tape by the audio rotary heads and outputs of the video rotary heads in the case where it is determined that the magnetic tape is the normal recorded tape by the fixed head on the basis of the result of the discrimination, and performs the auto-tracking on the basis of the selected outputs. With this arrangement, the auto-tracking can be carried out irrespective of whether the magnetic tape is the normal recorded tape by the conventional fixed head or the Hi-Fi recorded tape by the rotary heads.
摘要翻译： 磁记录/再现装置的自动跟踪装置具有用于鉴别记录在要再现的磁带上的音频信号是由音频旋转头还是固定头记录的电路，以及用于选择音频旋转的输出的电路 在通过固定头根据结果确定磁带是正常记录磁带的情况下，通过音频旋转头的Hi-Fi记录磁带和视频旋转磁头的输出的磁头 并且基于所选择的输出执行自动跟踪。 利用这种布置，可以执行自动跟踪，而不管磁带是通过常规固定头还是通过旋转头的Hi-Fi记录磁带的正常记录磁带。
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公开(公告)号：US5839683A
公开(公告)日：1998-11-24
申请号：US708097
申请日：1996-08-27
CPC分类号： G11B15/093 , G11B15/22 , G11B15/46 , G11B15/48 , G11B15/54
摘要： On the occasion of stopping the tape being run at a high speed, a winding radius of the tape supply reel is detected, and a tape deceleration rate is set in response to the detected winding radius. After the tape running speed is decelerated in the deceleration rate up to a preset speed, VL, at which the tape being run can be stopped without damage, the tape is stopped by a brake means. Thereby, the tape can be driven at a higher speed than the speed, VL, without damage, enabling a reduction of time required for a fast forward/rewind operation.
摘要翻译： 在停止磁带高速运行的情况下，检测磁带供带盘的卷绕半径，并根据检测到的绕线半径设定磁带减速度。 在磁带运行速度以减速率减速至预设速度之后，可以停止运行磁带的VL而不损坏，磁带由制动装置停止。 因此，可以以比速度VL更高的速度驱动带，而不会损坏，从而能够减少快进/快退操作所需的时间。
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公开(公告)号：US4855812A
公开(公告)日：1989-08-08
申请号：US133360
申请日：1987-12-15
IPC分类号： H04N5/45
CPC分类号： H04N5/45
摘要： A picture synthesizing apparatus in which a main picture is displayed with a part inlaid with a subsidiary picture. The apparatus includes an AGC circuit for regulating the gain of the main video signal and an AGC circuit for regulating the gain of a subsidiary video signal. Alternatively, the chrominance signal level of the subsidiary video signal can be regulated in accordance with the chrominance signal level of the main video signal.
摘要翻译： 一种图像合成装置，其中显示具有附属图像的部分的主图像。 该装置包括用于调节主视频信号的增益的AGC电路和用于调节辅助视频信号的增益的AGC电路。 或者，可以根据主视频信号的色度信号电平来调整辅助视频信号的色度信号电平。
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9.发明授权Tracking correction for a rotary head by detection of the minimum signal level 失效通过检测最小信号电平对旋转磁头进行跟踪校正
公开(公告)号：US4777543A
公开(公告)日：1988-10-11
申请号：US898539
申请日：1986-08-21
IPC分类号： G11B15/467 , H04N5/7826 , G11B5/588 , G11B15/473
CPC分类号： G11B15/4675
摘要： In an automatic tracking system for a magnetic recording and reproducing apparatus wherein tracking is controlled so as to increase an amplitude of a reproduced signal which is delivered from a rotary head for reproducing a track recorded by a helical scan system, the amplitudes of the reproduced signal are detected at a plurality of points of time within one rotational cycle of the rotary head, and the tracking is controlled so as to increase a minimum value among the detected values at the plurality of points of time.
摘要翻译： 在用于磁记录和再现装置的自动跟踪系统中，其中跟踪被控制以增加从用于再现由螺旋扫描系统记录的轨迹的旋转磁头传送的再现信号的幅度，再现信号的幅度 在旋转头的一个旋转周期内的多个时间点被检测，并且跟踪被控制以便在多个时间点上增加检测值中的最小值。
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10.发明授权A memory controlling apparatus for a magnetic recording and reproducing apparatus 失效一种用于磁记录和再现装置的存储器控制装置
公开(公告)号：US4912571A
公开(公告)日：1990-03-27
申请号：US81446
申请日：1987-08-04
IPC分类号： H04N5/937
CPC分类号： H04N5/937
摘要： A memory controlling apparatus for a magnetic recording and reproducing apparatus which records and reproduces a field image signal in each read or write cycle performed by a video head for reproducing the image signal from a magnetic tape, and by a video head position detector for detecting the position of the video head. A reference circuit obtains a signal defining a reference timing which is independent of the position of the video head and which is also used to determine the phase of the video head. A memory is provided having storage sufficient to store the field image signal, and a controller is provided for controlling the operation of reading and writing the image signal from and into the memory. The controller is synchronized with a signal of the video head position detector when storing the image signal into the memory and when reading out the image stored in the memory, the controller and the head position detector are synchronized with the reference timing so as to enable production of a slow-motion image signal free from fluctuations caused by feeding of the magnetic tape.
摘要翻译： 一种用于磁记录和再现装置的存储器控制装置，其在由用于从磁带再现图像信号的视频头执行的每个读或写周期中记录和再现场图像信号，以及视频头位置检测器，用于检测 视频头的位置。 参考电路获得定义与视频头的位置无关的参考定时的信号，并且还用于确定视频头的相位。 提供具有足以存储场图像信号的存储器的存储器，并且提供控制器用于控制从存储器读取和写入图像信号的操作。 当将图像信号存储到存储器中时，控制器与视频磁头位置检测器的信号同步，并且当读出存储在存储器中的图像时，控制器和磁头位置检测器与基准定时同步，以便能够产生 的慢动作图像信号没有由磁带的馈送引起的波动。
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