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    • 4. 发明申请
    • DEVICE AND METHOD FOR REPRODUCING INFORMATION
    • 用于复制信息的设备和方法
    • WO1997000517A1
    • 1997-01-03
    • PCT/JP1996001617
    • 1996-06-13
    • NIKON CORPORATIONTANAKA, ToshihisaARAI, HiroshiMATSUZAKI, TakakoISHII, Yuwa
    • NIKON CORPORATION
    • G11B07/085
    • G11B7/08505G11B7/005G11B11/10563
    • A magneto-optical reproducing device of land/group reproduction system capable of reproducing arbitrarily information recorded on both tracks. A method for the reproduction is also disclosed. The information reproducing device reproduces information from an information recording medium on which first and second groups of information tracks on which information is recorded are alternately provided concentrically or spirally. The height of the tracks of the first group is different from that of the second group. The device is provided with an optical head which projects a light beam upon an information track of the first or second group and a moving mechanism which moves the position of the spot of the light beam in the radial direction of the medium. The moving mechanism moves the spot of the light beam from one track to another of the first group or from one track of one group to another of another group.
    • 一种陆/群复制系统的磁光再现装置,其能够再现任意记录在两个轨道上的信息。 还公开了一种再现方法。 信息再现装置从信息记录介质再现信息,信息记录介质上记录有信息的第一和第二组信息轨道以同心或螺旋方式交替地设置。 第一组的轨道的高度与第二组的轨迹的高度不同。 该装置设置有将光束投射到第一组或第二组的信息轨道上的光学头,以及沿着介质的径向移动光束的位置的移动机构。 移动机构将光束的光点从第一组的一个轨道移动到另一个轨迹,或者将一组的一个轨道移动到另一个组的另一个轨道。