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    • 8. 发明申请
    • OPTICAL DISC
    • 光盘
    • WO1997038420A1
    • 1997-10-16
    • PCT/JP1997001223
    • 1997-04-09
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.KOISHI, KenjiOHARA, ShunjiISHIDA, TakashiSATOH, IsaoTAKEMURA, YoshinariGUSHIMA, ToyojiDEGUCHI, HironoriMITUI, Yoshitaka
    • G11B07/00
    • G11B7/24085G11B7/0053G11B7/00718G11B7/00745G11B7/0079G11B7/0906G11B20/1426G11B27/19G11B27/24G11B27/3027G11B2020/1259G11B2220/2562
    • An optical disc which has a rewritable first recording region and a read-only second recording region. The first recording region has first tracks which are composed of group tracks and land tracks which are alternately provided on a disc substrate spirally or concentrically. Each first track is divided into a plurality of first sectors. Each first sector has a first header region where identification data by which the first sector is identified are recorded and a first data region in which user data are recorded with recording marks where the optical characteristics of the recording surface are changed. The second recording region has second tracks which are composed of a physical pit row which are provided on the disc substrate spirally or concentrically. Each second track is divided into a plurality of second sectors. Each second sector has a second header region where identification data by which the second sector is identified are recorded and a second data region in which read-only data are recorded by means of the pit row. The first header region includes a first physical pit row. Each pit of the first pit row has a width in a radial direction of the disc which is substantially equal to the width of the group track and, further, the pits are staggered along the center line of the group track radially with pitches of approximately a quarter of the pitch of the group track. The second header region includes a second physical pit row. Each pit of the second pit row has a width in a radial direction of the disc which is smaller than the width of the group track and, further, the pits are arranged generally along the center line of the second track to be tracked.
    • 一种具有可改写的第一记录区和只读第二记录区的光盘。 第一记录区域具有第一轨道,其由组轨迹和轨迹组成,螺旋或同心地交替地设置在盘基片上。 每个第一轨道被分成多个第一扇区。 每个第一扇区具有第一标题区,其中记录有识别第一扇区的识别数据,以及记录有用于记录记录表面的光学特性的记录标记的用户数据的第一数据区。 第二记录区域具有第二轨道,其由设置在盘基板上的物理凹坑行螺旋状或同心地组成。 每个第二轨道被分成多个第二扇区。 每个第二扇区具有第二标题区,其中记录识别第二扇区的识别数据,以及通过凹坑行记录只读数据的第二数据区。 第一标题区包括第一物理坑行。 第一凹坑列的每个凹坑具有基本上等于组轨道的宽度的盘的径向方向上的宽度,并且此外,凹坑沿着组轨道的中心线径向地交错,间距大约为 四分之一的球场轨道。 第二标题区域包括第二物理坑行。 第二凹坑列的每个凹坑在盘的径向上具有小于组轨道的宽度的宽度,并且此外,凹坑大致沿着要跟踪的第二轨迹的中心线布置。