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    • 10. 发明申请
    • Optical disc apparatus
    • 光盘装置
    • US20080235715A1
    • 2008-09-25
    • US11901031
    • 2007-09-14
    • Nobuhiro WashiyaKazuhiko Ono
    • Nobuhiro WashiyaKazuhiko Ono
    • G11B17/03
    • G11B17/051
    • To eliminate scratches on a disc surface of an optical disc in an emergency eject operation, there is provided an optical disc apparatus including: an emergency eject detector for detecting an emergency eject instruction; a rotation speed detector for producing a signal corresponding to the rotation speed of the optical disc; and a logical circuit unit which is operated by a first signal from the emergency eject detector and a second signal from the rotation speed detector, and when the second output signal is not more than a reference level, produces a third signal so as to input a control signal for instructing stop of the actuator control into an actuator controller. After detection of the emergency eject instruction, the apparatus performs the actuator control without producing the third signal until the rotation speed is not more than a predetermined value. Thus the objective lens is made in a focus control state or in a saving state in which the objective lens is separated from the disc surface.
    • 为了在紧急弹出操作中消除光盘的盘表面上的划痕,提供了一种光盘装置,包括:用于检测紧急弹出指令的紧急弹出检测器; 旋转速度检测器,用于产生与光盘的旋转速度对应的信号; 以及逻辑电路单元,其由来自紧急弹出检测器的第一信号和来自转速检测器的第二信号操作,并且当第二输出信号不大于参考电平时,产生第三信号,以输入 用于指示致动器控制停止到致动器控制器中的控制信号。 在检测到紧急弹出指令之后,装置执行致动器控制而不产生第三信号,直到转速不大于预定值。 因此,物镜在聚焦控制状态或物镜与盘表面分离的保存状态下制成。