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    • 1. 发明申请
    • Disk discriminating method and disk discriminating apparatus
    • 盘识别方法和盘识别装置
    • US20060215500A1
    • 2006-09-28
    • US11337094
    • 2006-01-23
    • Norio HatanakaRyoichi IshikawaHirofumi Inoue
    • Norio HatanakaRyoichi IshikawaHirofumi Inoue
    • G11B7/00
    • G11B19/12
    • To discriminate a disk in a short time, a calculating part 16 measures an amplitude of one of a focus error signal and a tracking error signal, which are output from a differential signal generating part 15, several times, and outputs the measured amplitudes to a controller 20. The controller 20 compares the input amplitudes with threshold values stored in a memory 21, respectively, and determines whether or not an amplification gain of one of the focus error signal and the tracking error signal is changed. If it is determined that the amplification gain of one of the focus error signal and the tracking error signal is changed, the controller 20 changes the amplification gain of one of the focus error signal and the tracking error signal to an amplification gain represented by one of the threshold values and discriminates the kind of an optical disk based on the changed amplification gain.
    • 为了在短时间内识别盘,计算部16测量从差分信号生成部15输出的多次的聚焦误差信号和跟踪误差信号之一的振幅,并将测得的振幅输出到 控制器20。 控制器20分别将输入幅度与存储在存储器21中的阈值进行比较,并确定聚焦误差信号和跟踪误差信号之一的放大增益是否改变。 如果确定聚焦误差信号和跟踪误差信号之一的放大增益改变,则控制器20将聚焦误差信号和跟踪误差信号之一的放大增益改变为由 阈值并基于改变的放大增益来鉴别光盘的种类。
    • 2. 发明授权
    • Disk discriminating method and disk discriminating apparatus
    • 盘识别方法和盘识别装置
    • US07646689B2
    • 2010-01-12
    • US11337094
    • 2006-01-23
    • Norio HatanakaRyoichi IshikawaHirofumi Inoue
    • Norio HatanakaRyoichi IshikawaHirofumi Inoue
    • G11B7/00
    • G11B19/12
    • To discriminate a disk in a short time, a calculating part 16 measures an amplitude of one of a focus error signal and a tracking error signal, which are output from a differential signal generating part 15, several times, and outputs the measured amplitudes to a controller 20. The controller 20 compares the input amplitudes with threshold values stored in a memory 21, respectively, and determines whether or not an amplification gain of one of the focus error signal and the tracking error signal is changed. If it is determined that the amplification gain of one of the focus error signal and the tracking error signal is changed, the controller 20 changes the amplification gain of one of the focus error signal and the tracking error signal to an amplification gain represented by one of the threshold values and discriminates the kind of an optical disk based on the changed amplification gain.
    • 为了在短时间内识别盘,计算部16测量从差分信号生成部15输出的多次的聚焦误差信号和跟踪误差信号之一的振幅,并将测得的振幅输出到 控制器20分别将输入幅度与存储在存储器21中的阈值进行比较,并确定聚焦误差信号和跟踪误差信号之一的放大增益是否改变。 如果确定聚焦误差信号和跟踪误差信号之一的放大增益改变,则控制器20将聚焦误差信号和跟踪误差信号之一的放大增益改变为由 阈值并基于改变的放大增益来鉴别光盘的种类。