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    Information recording medium and method and apparatus for recording and reproducing information using the same
    3.
    发明公开
    Information recording medium and method and apparatus for recording and reproducing information using the same 失效
    信息记录介质和该使用方法和装置，用于记录和再现信息

    公开(公告)号：EP0821350A3

    公开(公告)日：1998-09-09

    申请号：EP97111959.9

    申请日：1997-07-14

    申请人： HITACHI, LTD.

    发明人： Miyamoto, Harukazu ,  Suzuki, Yoshio ,  Suzuki, Motoyuki ,  Sugiyama, Hisataka ,  Minemura, Hiroyuki ,  Fushimi, Tetsuya ,  Tokushuku, Nobuhiro

    IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B27/30 ,  G11B27/19 ,  G11B19/20

    CPC分类号： G11B20/12 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/0053 ,  G11B7/006 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/0938 ,  G11B7/24082 ,  G11B19/20 ,  G11B19/247 ,  G11B19/28 ,  G11B20/10009 ,  G11B27/19 ,  G11B27/24 ,  G11B27/28 ,  G11B27/3027

    摘要： A disk-like information recording medium (8) includes recording areas provided in both of a groove portion (3) and a land portion (4). The information recording medium is divided into groups of a plurality of areas, each track (3, 4) is divided into circular arc-shaped sectors (1) having the same central angle arranged to be radial in the radius direction, identification information (2) is provided at every sector, each track is divided into groups in such a manner that lengths of the circular arc-shaped sectors (1) become almost constant among the groups, and the groove portion and the land portion are wobbled in the radius direction of the information recording medium. When the groove portion information track (3) and the land portion information track (4) which are the recording portions are wobbled in the radius direction, position information can be reliably obtained from the recording portions, and hence recorded information can be accessed reliably. Also, an accuracy with which the rotation of the information recording medium is controlled can be raised, and it becomes possible to position recorded information accurately.

    摘要翻译： 一种盘形信息记录介质（8）包括在部分（4）在两个（3）和一个国家的一个槽部提供的记录区。 该信息记录介质被划分成的区域复数，每个磁迹组（3，4）被划分成具有布置在半径方向上，标识信息是径向的同一中心角的圆弧状扇区（1）（2 ）在每个扇区被提供，每个磁道被分成组在寻求的方式没有圆弧形扇区（1）成为各组之间几乎恒定，并且所述槽部和所述接地部的长度在半径方向上呈摆动 的信息记录介质。 当沟槽信息轨迹（3）和所述接地部的信息轨道（4），其是部分在半径方向上进行摆动的记录，位置信息可被可靠地从记录部分获得的，并且因此所记录的信息可被可靠地访问。 因此，在准确度与该信息记录介质被控制的旋转可以提高，并且可以以定位记录的信息准确地设定。

    Information recording medium and method and apparatus for recording and reproducing information using the same
    10.
    发明公开
    Information recording medium and method and apparatus for recording and reproducing information using the same 失效
    信息记录介质以及使用其记录和再现信息的方法和设备

    公开(公告)号：EP0821350A2

    公开(公告)日：1998-01-28

    申请号：EP97111959.9

    申请日：1997-07-14

    申请人： HITACHI, LTD.

    发明人： Miyamoto, Harukazu ,  Suzuki, Yoshio ,  Suzuki, Motoyuki ,  Sugiyama, Hisataka ,  Minemura, Hiroyuki ,  Fushimi, Tetsuya ,  Tokushuku, Nobuhiro

    IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B27/30 ,  G11B27/19 ,  G11B19/20

    CPC分类号： G11B20/12 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/0053 ,  G11B7/006 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/0938 ,  G11B7/24082 ,  G11B19/20 ,  G11B19/247 ,  G11B19/28 ,  G11B20/10009 ,  G11B27/19 ,  G11B27/24 ,  G11B27/28 ,  G11B27/3027

    摘要： A disk-like information recording medium (8) includes recording areas provided in both of a groove portion (3) and a land portion (4). The information recording medium is divided into groups of a plurality of areas, each track (3, 4) is divided into circular arc-shaped sectors (1) having the same central angle arranged to be radial in the radius direction, identification information (2) is provided at every sector, each track is divided into groups in such a manner that lengths of the circular arc-shaped sectors (1) become almost constant among the groups, and the groove portion and the land portion are wobbled in the radius direction of the information recording medium. When the groove portion information track (3) and the land portion information track (4) which are the recording portions are wobbled in the radius direction, position information can be reliably obtained from the recording portions, and hence recorded information can be accessed reliably. Also, an accuracy with which the rotation of the information recording medium is controlled can be raised, and it becomes possible to position recorded information accurately.

    摘要翻译： 盘状信息记录介质（8）包括设置在凹槽部分（3）和平台部分（4）两者中的记录区域。 信息记录介质被分成多个区域的组，每个轨道（3,4）被划分成具有相同的中心角的圆弧形扇区（1），所述扇区在径向方向上被放射状地排列，识别信息（2 ）被设置在每个扇区处，每个轨道以这样的方式被分成组，即圆弧形扇区（1）的长度在这些组之中几乎恒定，并且凹槽部分和平台部分沿径向摆动 信息记录介质。 当作为记录部分的凹槽部分信息轨道（3）和平台部分信息轨道（4）沿径向摆动时，可以从记录部分可靠地获得位置信息，因此可以可靠地访问记录的信息。 而且，可以提高控制信息记录介质的旋转的精度，并且可以准确地定位所记录的信息。