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    • 1. 发明申请
    • OPTICAL DISK APPARATUS
    • 光盘设备
    • US20120113781A1
    • 2012-05-10
    • US13384023
    • 2011-02-28
    • Takamitsu WatanabeNaoya Hotta
    • Takamitsu WatanabeNaoya Hotta
    • G11B27/36G11B7/1374
    • G11B7/08511G11B19/127
    • An optical disk apparatus according to the present invention includes: a drive selector 28 that makes a switch between a setting for sending a drive signal generated by a focus drive generation section 25 to a focus drive section 29, and a setting for sending a drive signal generated by a focus filter 27 to the focus drive section 29; and a lock-in timing detection section 21 that, upon a light amount signal detected by a light amount signal detection section exceeding a predetermined light amount level, determines that an optical spot reaches a vicinity of any of recording layers, and sends to the drive selector 28 a focus lock-in timing instruction for switching to the setting for sending the drive signal generated by the focus filter 27 to the focus drive section 29. Such configuration provides an optical disk apparatus allowing a stable focus lock in operation to be performed without using a layer determination signal when locking a focus into a recording layer of an optical disk.
    • 根据本发明的光盘装置包括:驱动选择器28,其在用于将聚焦驱动生成部25生成的驱动信号发送到聚焦驱动部29的设定之间进行切换,以及用于发送驱动信号的设定 由聚焦滤色器27产生到聚焦驱动部分29; 以及锁定定时检测部21,其在由超过预定光量水平的光量信号检测部检测到的光量信号时,判定光点到达任何记录层的附近,并发送到驱动器 选择器28用于切换到用于将由聚焦滤光器27产生的驱动信号发送到聚焦驱动部分29的设置的聚焦锁定定时指令。这种配置提供了允许在操作中稳定的聚焦锁定的光盘装置而不进行 当将聚焦锁定到光盘的记录层中时,使用层确定信号。