会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 35. 发明申请
    • Tracking Control Apparatus And Method, And Signal Processing Apparatus
    • 跟踪控制装置及方法及信号处理装置
    • US20070217294A1
    • 2007-09-20
    • US10595476
    • 2004-10-22
    • Rie TakahashiKatsuya Watanabe
    • Rie TakahashiKatsuya Watanabe
    • G11B7/00
    • G11B7/0906
    • To improve a precision of tracking control. A tracking control apparatus includes a filter section (106) including a plurality of low-pass filters (LPFs). Each of the plurality of low-pass filters (LPFs) removes components having frequencies equal to or higher than a predetermined cutoff frequency from a corresponding received light quantity signal among a plurality of received light quantity signals output from light detection means (6). The tracking control apparatus includes: a tracking error detection section (104) for generating a tracking error signal indicating an amount of deviation of an optical beam spot from a track to be scanned on a recording surface of an optical disc by performing predetermined calculations with respect to a plurality of signals output from the filter section (106); and a tracking control section (102) for driving moving means (101) such that the optical beam spot follows the track on the recording surface of the optical disc in accordance with the tracking error signal.
    • 提高跟踪控制的精度。 跟踪控制装置包括具有多个低通滤波器(LPF)的滤波器部分(106)。 多个低通滤波器(LPF)中的每一个从光检测装置(6)输出的多个接收光量信号中从对应的接收光量信号中去除具有等于或高于预定截止频率的频率的分量。 跟踪控制装置包括:跟踪误差检测部分,用于通过相对于光盘的记录表面执行预定的计算,产生指示光束点与光盘的记录表面上的待扫描轨迹的偏离量的跟踪误差信号 到从所述滤波器部分(106)输出的多个信号; 以及用于驱动移动装置(101)的跟踪控制部分(102),使得光束点根据跟踪误差信号跟随光盘的记录表面上的轨道。