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2. 发明公开

EP0200434A1 Method for reading out optically recorded data and device therefor 失效
标题翻译：用于读出光学记录数据的方法及其装置
公开(公告)号：EP0200434A1
公开(公告)日：1986-12-10
申请号：EP86302929.4
申请日：1986-04-18
申请人： CSK CORPORATION
发明人： Kimura, Fumio Computer Services Corporation , Takahashi, Shunzu Computer Services Corporation , Hamasaki, Yukio Computer Services Corporation
IPC分类号： G11B7/007
摘要： The present application discloses closely related plural inventions on a method and a device for reading out optically recorded data from an optical recording medium having data recording regions defined by reference lines in stripe and plural data tracks arranged in parallel to each other and perpendicular to said reference lines. According to the present inventions, a drastic change in the position of a reference line (7) at a given order within the sensing field is monitored from among plural reference lines covered by the field. If there is any drastic change, the order of the reference line (7) for reading is modified so that the data track (3) to be read can be accurately followed even if the field of the reading sensor is deviated in the direction of the data tracks (3). It also enables correct data reading by checking whether the position of the reference lines (7) included in the field of the reading sensor is within the preset tolerance.
摘要翻译：本申请公开了关于用于从光记录介质读出光记录数据的方法和装置的密切相关的多个发明，该光记录介质具有由条带中的参考线限定的数据记录区域和彼此平行布置且垂直于所述参考的多个数据轨道线。根据本发明，从该场所覆盖的多个参考线中监测在感测场内的给定顺序的参考线（7）的位置的剧烈变化。如果有任何剧烈变化，则修改读取参考线（7）的顺序，使得即使读取传感器的磁场偏离磁道方向，也能够准确地跟踪要读取的数据磁道（3）数据轨道（3）。它还通过检查读数传感器区域中包含的参考线（7）的位置是否在预设容差范围内来实现正确的数据读取。

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