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
    • 2. 发明申请
    • RECORDING/REPRODUCING APPARATUS AND TRACKING CONTROL METHOD
    • 记录/再现设备和跟踪控制方法
    • WO2007132974A3
    • 2008-04-10
    • PCT/KR2007000451
    • 2007-01-25
    • LG ELECTRONICS INCSEO JEONG KYOCHOI IN HO
    • SEO JEONG KYOCHOI IN HO
    • G11B7/00G11B7/09
    • G11B7/094G11B7/0901G11B7/0941G11B7/1356G11B7/1387
    • A recording/reproducing apparatus and a tracking control method which can perform data processing for reliably recording or reproducing data on or from a recording medium are disclosed. Tracking error signal (TE) is generated using difference signal (A-B) produced from reflected light from a recording medium and an offset included in the difference signal is compensated for using another reflected light received separately from the reflected light. Offset-compensated tracking error signal ((A-B)-k(C-D)) is obtained by subtracting another difference signal (C-D) produced from the separately received reflected light according to gain (k) from difference signal (A-B). Different gains may be used for areas on the recording medium having different reflectances. Thus, the tracking error signal can be compensated for an optical offset caused by lens movement and an offset caused by different reflectances and light radiated to the recording medium can accurately follow its track to perform reliable data processing.
    • 公开了一种记录/再现装置和跟踪控制方法,其可以执行用于在记录介质上或从记录介质再现数据的数据处理。 使用从记录介质的反射光产生的差分信号(A-B)产生跟踪误差信号(TE),并且使用与反射光分开接收的另一反射光补偿差分信号中包括的偏移。 通过从差分信号(A-B)中减去根据增益(k)从单独接收的反射光产生的另一差分信号(C-D),获得偏移补偿跟踪误差信号((A-B)-k(C-D))。 不同的增益可用于具有不同反射率的记录介质上的区域。 因此,可以补偿由透镜移动引起的光学偏移的跟踪误差信号,并且由不同反射率引起的偏移和辐射到记录介质的光可以精确地跟随其轨迹执行可靠的数据处理。