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    Tracking system for controlling the radial positioning of a transducer on a disc medium
    1.
    发明授权
    Tracking system for controlling the radial positioning of a transducer on a disc medium 失效
    用于控制盘介质上的换能器的径向定位的跟踪系统

    公开(公告)号：US4562562A

    公开(公告)日：1985-12-31

    申请号：US478443

    申请日：1983-03-24

    申请人： Mitsuro Moriya ,  Toshiji Kanamaru ,  Yoshinobu Nakata

    发明人： Mitsuro Moriya ,  Toshiji Kanamaru ,  Yoshinobu Nakata

    IPC分类号： G11B7/085 ,  G11B21/08 ,  G11B7/00 ,  G11B21/10

    CPC分类号： G11B21/085 ,  G11B21/083 ,  G11B7/08517 ,  G11B7/08529 ,  G11B7/08541

    摘要： A data track searching device capable of switching between two modes; one being the rough searching mode in which a transducer is displaced at a high velocity to a desired track and the other being the fine searching mode which follows the rough searching mode and in which the transducer is displaced at a relative low velocity and positioned over the proper or desired track. The operating point of a tracking element is shifted or deviated as a result of the high-velocity displacement of the transducer in the rough searching mode so that stable searching cannot be ensured. According to the present invention, therefore, the acceleration of the transducer in the rough searching mode is detected and a signal representative of the thus detected acceleration is applied to the tracking element so that the shift or deviation of the operating point of the tracking element can substantially made nil.

    摘要翻译： 一种能够在两种模式之间切换的数据轨迹搜索装置; 一个是粗略搜索模式，其中换能器以高速度移动到期望的轨道，另一个是跟随粗略搜索模式的精细搜索模式，并且其中换能器以相对低的速度移位并且位于 正确或期望的轨道。 跟踪元件的工作点由于在粗略搜索模式下换能器的高速位移而偏移或偏移，从而不能确保稳定的搜索。 因此，根据本发明，检测粗略搜索模式中的换能器的加速度，并且将表示由此检测到的加速度的信号应用于跟踪元件，使得跟踪元件的工作点的偏移或偏移可以 大致为零

    Optical information recording disk having embossed clock mark pits and embossed information recording pits
    10.
    发明授权
    Optical information recording disk having embossed clock mark pits and embossed information recording pits 失效
    具有压纹时钟标记凹坑和压花信息记录凹坑的光学信息记录盘

    公开(公告)号：US5295131A

    公开(公告)日：1994-03-15

    申请号：US769823

    申请日：1991-10-02

    申请人： Hiromichi Ishibashi ,  Mitsuro Moriya

    发明人： Hiromichi Ishibashi ,  Mitsuro Moriya

    IPC分类号： G11B7/0045 ,  G11B7/0055 ,  G11B7/09 ,  G11B7/24

    CPC分类号： G11B7/0938 ,  G11B7/0045 ,  G11B7/00557 ,  G11B7/24

    摘要： In a first optical disk, a plurality of sets of bit information record cells, each cell including a plurality of bit information record cells, and a plurality of clock marks are formed along a track line on a substrate, and the bit information record cells are formed for example as pits, wherein the recording or reading of a bit of information to or from the bit information record cells is effected with a laser head. The information record cells are arranged at mutual intervals smaller than the minimum read distance of the laser head, while the clock marks are provided so as to have a distance from a set of bit information record cell which is larger than the minimum read distance of the laser head so that the clock marks can be recognized by the laser head to be used for synchronization. Then, the recording density can be improved. In a second optical disk, track recognition marks are arranged as d spiral at equiangular distances so that there are an odd number of track recognition marks per track unit. Thus, even if the track pitch is on the order of the minimum read distance, the distance between adjacent wobble marks becomes is about double the minimum read distance so that the wobble marks can be recognized independently for tracking error detection.

    摘要翻译： 在第一光盘中，沿着基板上的轨迹线形成多组位信息记录单元，包括多个位信息记录单元的每个单元和多个时钟标记，并且位信息记录单元是 形成为例如凹坑，其中利用激光头实现对位信息记录单元的位信息的记录或读取。 信息记录单元被布置成小于激光头的最小读取距离的相互间隔，而时钟标记被设置成与一组比特信息记录单元的距离大于最小读取距离 激光头，使得时钟标记可以由激光头识别以用于同步。 然后，可以提高记录密度。 在第二光盘中，轨道识别标记以等角距离布置为d螺旋，使得每个轨道单元存在奇数个轨道识别标记。 因此，即使轨道间距是最小读取距离的顺序，相邻摆动标记之间的距离变成约为最小读取距离的两倍，从而可以独立地识别摆动标记以进行跟踪误差检测。