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    Electronic still video record/play head positioner having both open and closed loop positioning control
    1.
    发明授权
    Electronic still video record/play head positioner having both open and closed loop positioning control 失效
    具有开环和闭环定位控制的电子静态视频记录/播放头定位器

    公开(公告)号：US4811133A

    公开(公告)日：1989-03-07

    申请号：US864685

    申请日：1986-05-19

    申请人： Katsuo Nakadai ,  Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda

    发明人： Katsuo Nakadai ,  Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G05B11/18

    CPC分类号： G11B21/083 ,  G11B5/5556 ,  G11B5/59677

    摘要： An apparatus for positioning a recording or playback head over a rotating recording medium, such as a magnetic disk. When access to a desired track is attempted, the head is quickly moved and placed within a range close to the track under open loop control. When the head enters the range close to the desired track, the head control is switched to servo feed under closed loop control. During the servo feed, the head is moved according to a head position signal representing the actual position of the head, the head position signal being given by a head position detector having a portion moving together with the head. The head is thus directed to a predetermined position according to an error signal corresponding to the deviation of the head position. When the head has passed through the desired position, driving force in the reverse direction is generated and the head is forced back toward the desired position. The head thus oscillates around the desired position but converges to it.

    摘要翻译： 一种用于在诸如磁盘的旋转记录介质上定位记录或重放头的装置。 当尝试访问所需的轨道时，头部可以快速移动并放置在开环控制下靠近轨道的范围内。 当磁头进入靠近所需轨道的范围时，磁头控制在闭环控制下切换到伺服进给。 在伺服进给期间，头部根据表示头部实际位置的头部位置信号移动，头部位置信号由具有与头部一起移动的部分的头部位置检测器给出。 因此，根据与头部位置的偏差相对应的误差信号，头部被引导到预定位置。 当头部已经通过所需位置时，产生相反方向的驱动力，并且头部被迫回到所需位置。 因此，头部围绕期望的位置振荡，但是会聚到它。

    Head positioner
    4.
    发明授权
    Head positioner 失效
    头部定位器

    公开(公告)号：US4959599A

    公开(公告)日：1990-09-25

    申请号：US268443

    申请日：1988-11-08

    申请人： Katsuo Nakadai ,  Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda

    发明人： Katsuo Nakadai ,  Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08

    CPC分类号： G11B21/083 ,  G11B5/5556 ,  G11B5/59677

    摘要： An apparatus for positioning a recording or playback head over a rotating recording medium, such as a magnetic disk. When access to a desired track is attempted, the head is quickly moved and placed within a range close to the track under open loop control. When the head enters the range close to the desired track, the head control is switched to servo feed under closed loop control. During the servo feed, the head is moved according to a head position signal representing the actual position of the head, the head position signal being given by a head position detector having a portion moving together with the head. The head is thus directed to a predetermined position according to an error signal corresponding to the deviation of the head position. When the head has passed through the desired position, driving force in the reverse direction is generated and the head is forced back toward the desired position. The head thus oscillates around the desired position but converges to it.

    Apparatus for controlling playback head tracking for rotary recording medium using average peak envelope position
    5.
    发明授权
    Apparatus for controlling playback head tracking for rotary recording medium using average peak envelope position 失效
    用于使用平均峰值包络位置来控制用于旋转记录介质的重放头跟踪的装置

    公开(公告)号：US4835631A

    公开(公告)日：1989-05-30

    申请号：US938042

    申请日：1986-12-04

    申请人： Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda ,  Katsuo Nakadai

    发明人： Izumi Miyake ,  Kiyotaka Kaneko ,  Kazuya Oda ,  Katsuo Nakadai

    IPC分类号： G11B5/596 ,  G11B21/08

    CPC分类号： G11B5/59611 ,  G11B21/083 ,  G11B21/085

    摘要： A device for tracking a rotary recording medium includes a playback head for reading a signal from any of a plurality of tracks which are formed on the rotary recording medium, which is rotating at a predetermined constant speed, such that a beginning and an end of a recording in each of the tracks coincide with each other, a head support mechanism supporting the head such that the head is movable along the recording medium, an arrangement for detecting an envelope of a signal which is read out of the recording medium by the head, and a controller for controlling the head support mechanism to move the head to a position where a desired one of the tracks is located. An arrangement for detecting a position of the head relative to the recording medium and an arrangement for detecting a rotation phase of the recording medium are provided. The controller controls the head support mechanism to transport the head, while the position detecting arrangement during transport of the head detects positions of the head at which a peak of an envelope is detected in one track at each of a plurality of angles of rotation of the recording medium. The controller produces a means position of those positions of the head detected and, then, controls the head support mechanism to transport the head to the mean position.

    摘要翻译： 一种用于跟踪旋转记录介质的设备包括一个重放头，用于从旋转记录介质上形成的多个轨迹中的任何一个读取一个信号，该旋转记录介质以预定的恒定速度旋转，使得开始和结束 在每个轨道中的记录彼此重合，支撑头部的头部支撑机构使得头部沿着记录介质可移动，用于检测由头部从记录介质读出的信号的包络的装置， 以及控制器，用于控制头部支撑机构以将头部移动到所需的一个轨道所在的位置。 提供了用于检测头相对于记录介质的位置的装置和用于检测记录介质的旋转相位的装置。 控制器控制头部支撑机构以传送头部，而在头部传送期间的位置检测装置检测头部的位置，在该位置处，在多个旋转角度的每一个的一个轨道中检测到包络的峰值 记录介质。 控制器产生检测到头部位置的装置位置，然后控制头部支撑机构将头部运送到平均位置。

    Tracking apparatus for rotary recording medium on the basis of envelope detection
    8.
    发明授权
    Tracking apparatus for rotary recording medium on the basis of envelope detection 失效
    基于包络检测的旋转记录介质的跟踪装置

    公开(公告)号：US4689700A

    公开(公告)日：1987-08-25

    申请号：US845338

    申请日：1986-03-28

    申请人： Izumi Miyake ,  Kiyotaka Kaneko ,  Katsuo Nakadai ,  Kazuya Oda

    发明人： Izumi Miyake ,  Kiyotaka Kaneko ,  Katsuo Nakadai ,  Kazuya Oda

    IPC分类号： G11B5/55 ,  G11B5/58 ,  G11B5/596 ,  G11B5/56

    CPC分类号： G11B5/553 ,  G11B5/58 ,  G11B5/59611

    摘要： A tracking apparatus for tracking a track recorded in a rotary recording medium which rotates at a predetermined constant speed has a playback head for sensing a signal out of a desired one of tracks each being provided in the recording medium such that a beginning and an end of recording coincide with each other includes a head transport mechanism for supporting the playback head movably along the recording medium, an envelope detector for detecting an envelope of the signal sensed by the playback head, and a controller for controlling the head transport mechanism to move the playback head to a position where a desired one of the tracks is located. The head transport mechanism includes a head position detector for detecting a position of the playback head on the recording medium. The controller is constructed to control the head transport mechanism to move the head to compute for one of the tracks two different positions where a level of the envelope detected by the envelope detector has a reference value, then compute an intermediate position between the two positions, and then control the head transport mechanism to move the head to the intermediate position. The reference value may be controlled higher when the position of the head is associated with any of the tracks having comparatively large diameters than when it is associated with any of the tracks having comparatively small diameters.

    摘要翻译： 用于跟踪记录在以预定的恒定速度旋转的旋转记录介质中的轨迹的跟踪装置具有用于感测每个设置在记录介质中的期望的一个轨道中的信号的回放头，使得开始和结束 相互重合的记录包括用于沿着记录介质可移动地支撑重放头的磁头传送机构，用于检测由重放头感测到的信号的包络的包络检测器，以及用于控制磁头传送机构以移动重放的控制器 到达所需轨道所在的位置。 磁头传送机构包括用于检测记录介质上的重放头的位置的磁头位置检测器。 控制器被构造成控制磁头传送机构以移动磁头，以计算磁道之一的两个不同位置，其中由包络检测器检测到的包络的电平具有参考值，然后计算两个位置之间的中间位置， 然后控制磁头传送机构将磁头移动到中间位置。 当头部的位置与具有相对较大直径的轨道相关联的轨道的位置与当具有相对较小直径的轨道相关联的轨道的位置相关联时，可以更高地控制参考值。

    Tracking apparatus for rotational magnetic recording medium with envelope level correction
    9.
    发明授权
    Tracking apparatus for rotational magnetic recording medium with envelope level correction 失效
    具有包络电平校正的旋转磁记录介质的跟踪装置

    公开(公告)号：US4677506A

    公开(公告)日：1987-06-30

    申请号：US840756

    申请日：1986-03-18

    申请人： Kiyotaka Kaneko ,  Katsuo Nakadai ,  Izumi Miyake ,  Kazuya Oda

    发明人： Kiyotaka Kaneko ,  Katsuo Nakadai ,  Izumi Miyake ,  Kazuya Oda

    IPC分类号： G11B21/10 ,  G11B5/596 ,  G11B5/56

    CPC分类号： G11B5/59611

    摘要： A tracking apparatus for a signal reproducing apparatus makes use of a rotating magnetic recording medium, especially when such apparatus reproduces information signals recorded on the medium, such as video signals. The tracking apparatus includes a compensation circuit capable of compensating for the envelope level of the signals sensed by the playback head, so that the dynamic range for which the envelope signal is quantized may be narrower, or the quantum level steps may be smaller, and hence the resolution thereof may be enhanced correspondingly.

    摘要翻译： 用于信号再现装置的跟踪装置利用旋转磁记录介质，特别是当这种装置再现记录在介质上的诸如视频信号的信息信号时。 跟踪装置包括补偿电路，该补偿电路能够补偿由重放头感测到的信号的包络电平，使得包络信号被量化的动态范围可能更窄，或者量子级步长可能更小 可以相应地提高其分辨率。

    Image display system
    10.
    发明授权
    Image display system 失效
    图像显示系统

    公开(公告)号：US4991121A

    公开(公告)日：1991-02-05

    申请号：US353164

    申请日：1989-05-15

    申请人： Nobuo Minoura ,  Satoshi Iwamatsu ,  Katsuo Nakadai

    发明人： Nobuo Minoura ,  Satoshi Iwamatsu ,  Katsuo Nakadai

    IPC分类号： G11B27/00 ,  G11B27/10 ,  G11B27/34 ,  G11B27/36 ,  H04N5/775 ,  H04N9/12

    CPC分类号： G11B27/105 ,  G11B27/002 ,  G11B27/34 ,  G11B27/36 ,  H04N5/775 ,  H04N9/12 ,  G11B2220/20

    摘要： An image display system in which a plurality of magnetic recording/reproducing apparatus can be controlled via interfaces by a computer. The computer is adapted to output specification data for specifying one or more magnetic recording/reproducing apparatus to be controlled as well as control data including at least data on the shift of one or more magnetic recording/reproducing heads of the magnetic recording/reproducing apparatus to be specified. Each interface decodes the data input from the computer and transmits a given piece of control data to the magnetic recording/reproducing apparatus specified. The specified magnetic recording/reproducing apparatus shifts the magnetic recording/reproducing head in the radial direction of a rotating magnetic recording medium in accordance with the data on the shift of the magnetic recording/reproducing head applied through the above interface, and records signals into an arbitrary track or reproduces signals from an arbitrary track.

    摘要翻译： 一种图像显示系统，其中可以通过计算机的接口来控制多个磁记录/再现装置。 计算机适于输出用于指定要控制的一个或多个磁记录/再现装置的指定数据以及至少包括关于磁记录/再现装置的一个或多个磁记录/再现头的移位的数据的控制数据至 被指定。 每个接口解码从计算机输入的数据，并将给定的控制数据传送到指定的磁记录/再现装置。 指定的磁记录/再现装置根据通过上述接口应用的磁记录/再现头的移位数据，使磁记录/再现头在旋转的磁记录介质的径向上移位，并将信号记录到 任意轨道或再现任意轨道的信号。