Multilayer record carrier and device for scanning said carrier
    1.
    发明申请
    Multilayer record carrier and device for scanning said carrier 有权
    用于扫描所述载体的多层记录载体和装置

    公开(公告)号:US20020101811A1

    公开(公告)日:2002-08-01

    申请号:US10083330

    申请日:2001-10-22

    Abstract: A record carrier provided with at least two parallel information layers (20, 21) suitable to be scanned by means of a single scanning head is described. Each information layer is provided with a control block (26, 31) in which information is stored which can be used for reading the user information stored in this information layer. The control blocks are placed in the record carrier in such a way that they can be sequentially read by means of a scanning device, with a minimum displacement of the scanning head. The user information may be stored in a first format in the first information layer, and the same user information may be stored in a second format in a second information layer. The first format may be a low-density structure and the second format may be a high-density structure.

    Abstract translation: 描述了一种设置有至少两个平行信息层(20,21)的记录载体,适于通过单个扫描头进行扫描。 每个信息层设置有一个控制块(26,31),其中存储可用于读取存储在该信息层中的用户信息的信息。 控制块被放置在记录载体中,使得它们可以通过扫描装置以扫描头的最小位移被依次读取。 用户信息可以以第一格式存储在第一信息层中,并且相同的用户信息可以以第二格式存储在第二信息层中。 第一格式可以是低密度结构,第二格式可以是高密度结构。

    Disc-like record carrier with information track containing control information including disc diameter
    2.
    发明申请
    Disc-like record carrier with information track containing control information including disc diameter 有权
    具有包含盘直径的控制信息的信息轨道的盘状记录载体

    公开(公告)号:US20020118632A1

    公开(公告)日:2002-08-29

    申请号:US10134912

    申请日:2002-04-29

    Inventor: Johannes J. Mons

    CPC classification number: G11B19/247 G11B19/12

    Abstract: A disc-like record carrier (1) is disclosed on which control information is recorded. The control information comprises diameter information which is indicative of the diameter of the record carrier. An information recording and/or reading apparatus comprises a drive means (2) for rotatingly driving the disc-like record carrier (1). The apparatus comprises a control unit (5) which adapts the loop gain of a control loop (2, 3, 7, 8, 9) for controlling the number of revolutions per minute of the record carrier (1) in dependence on the control information recorded on the record carrier.

    Abstract translation: 公开了一种盘状记录载体(1),其上记录有控制信息。 控制信息包括指示记录载体的直径的直径信息。 信息记录和/或读取装置包括用于旋转地驱动盘状记录载体(1)的驱动装置(2)。 该装置包括控制单元(5),该控制单元(5)根据控制信息调整用于控制记录载体(1)的每分钟转数的控制回路(2,3,7,8,9)的环路增益 记录在记录载体上。

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