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    • 3. 发明申请
    • OPTICAL DISK REPRODUCING DEVICE AND OPTICAL DISK REPRODUCING METHOD
    • 光盘复制设备和光盘再现方法
    • US20100177622A1
    • 2010-07-15
    • US12685881
    • 2010-01-12
    • Ariyoshi NakaokiOsamu Kawakubo
    • Ariyoshi NakaokiOsamu Kawakubo
    • G11B7/00
    • G11B7/0037G11B7/127
    • An optical disk reproducing device includes: a semiconductor laser for sequentially emitting singular peak light and singular slope light as laser light when supplied with a driving pulse formed in a form of a pulse and formed of a predetermined singular voltage; an objective lens for condensing the laser light onto a recording layer disposed in an optical disk, and converting an angle of divergence of return light returned from the recording layer; a detection signal generating section configured to detect respective light intensities in each of wavelength bands in the return light, and respectively generate a plurality of detection signals according to the respective light intensities; and a reproduction processing section configured to reproduce information recorded on the optical disk on a basis of the plurality of detection signals.
    • 一种光盘再现装置,包括:半导体激光器,当被提供形成脉冲形式并由预定奇异电压形成的驱动脉冲时,顺序地发射单个峰值光和奇异斜率光作为激光; 用于将激光聚光到设置在光盘中的记录层上并转换从记录层返回的返回光的发散角的物镜; 检测信号生成部,被配置为检测返回光中的每个波长带中的各个光强度,并分别根据各个光强度产生多个检测信号; 以及再现处理部,被配置为基于所述多个检测信号再现记录在所述光盘上的信息。
    • 10. 发明授权
    • Initializing a phase-changing optical recording medium using a laser including a high speed shutter
    • 使用包括高速快门的激光器来初始化相变光学记录介质
    • US06418103B1
    • 2002-07-09
    • US09392905
    • 1999-09-09
    • Kazumine ItoManami NakamuraOsamu KawakuboHiroshi Kawase
    • Kazumine ItoManami NakamuraOsamu KawakuboHiroshi Kawase
    • G11B700
    • G11B7/268G11B7/26
    • Disclosed are an apparatus for initializing an optical recording medium to be initialized with stability and ease without employing any focus servo means, and a phase-changing optical recording medium initialized by the initializing apparatus to have a recording layer in a uniform crystalline state over an entire area of the medium which takes part in recording and reproduction of an information signal. In the apparatus for initializing a phase-changing optical recording medium, a laser beam emitted from a laser beam source is irradiated to a recording layer, in an amorphous state, formed in an optical recording medium to be initialized, which is a pre-stage member of the phase-changing optical recording medium, for changing the recording layer into a crystalline state. The laser beam source, e.g., a YAG laser, includes a high-speed shutter for exciting the laser beam source while the laser beam source is held in a state of not starting oscillation, and emits the laser beam within a very short time on the order of several tens nanoseconds (ns) to several hundreds nanoseconds (ns) with its peak power increased more than 10000 times that produced in a continuous oscillation mode.
    • 公开了一种用于初始化光记录介质以在不采用任何聚焦伺服装置的情况下稳定且容易地初始化的光记录介质的装置,以及由初始化装置初始化的相位改变光记录介质,以使得具有整体上均匀结晶状态的记录层 参与记录和再现信息信号的介质的区域。 在用于初始化相变光学记录介质的设备中,从激光束源发射的激光束照射到非易失性状态的记录层上,该记录层形成在初始化的光记录介质中,该光记录介质是前级 用于将记录层改变为结晶状态的相变光学记录介质的成员。 激光束源(例如YAG激光器)包括用于激发激光束源的高速快门,同时激光束源保持在不启动振荡的状态,并且在非常短的时间内将激光束发射在 几十纳秒(ns)到几百纳秒(ns)的次数,其峰值功率增加了连续振荡模式下产生的10000倍。