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    • 51. 发明授权
    • Device and method for controlling tilt servo
    • 用于控制倾斜伺服的装置和方法
    • US06925039B2
    • 2005-08-02
    • US09994607
    • 2001-11-28
    • Naoharu YanagawaMasahiro Kato
    • Naoharu YanagawaMasahiro Kato
    • G11B7/004G11B7/00G11B7/0045G11B7/095G11B7/125G11B7/13G11B7/135
    • G11B7/131G11B7/0045G11B7/0956G11B7/126G11B7/1267G11B7/1369G11B2007/0006
    • A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a split type photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device generates a push-pull component signal including a differential component of output signals of respective split portions of the photo detector, generates a tilt error signal representing a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam based on the push-pull component signal, and drives a tilt angle adjuster for adjusting the tilt angle so as to reduce the tilt error signal.
    • 一种用于在光学记录介质上记录信息并从光学记录介质再现信息的设备的倾斜伺服控制装置,该装置包括用于将从光源发射的激光束引导到光学记录介质的记录表面的光学系统,以及激光束 由记录介质的记录表面反射到分离式光电检测器和用于根据光电检测器的输出信号产生读取信号的读取信号发生器。 倾斜伺服控制装置产生包括光电检测器的各个分割部分的输出信号的差分分量的推挽分量信号,产生表示在照射记录表面的激光束的位置处的倾斜角度的倾斜误差信号, 基于推挽分量信号的激光束的光轴,并且驱动用于调整倾斜角的倾斜角度调节器,以便减少倾斜误差信号。
    • 56. 发明申请
    • Device and method for controlling tilt servo
    • 用于控制倾斜伺服的装置和方法
    • US20050270924A1
    • 2005-12-08
    • US11174478
    • 2005-07-06
    • Naoharu YanagawaMasahiro Kato
    • Naoharu YanagawaMasahiro Kato
    • G11B7/004G11B7/00G11B7/09G11B7/095G11B7/135
    • G11B7/0956G11B7/0945G11B7/1369G11B2007/0006
    • A tilt servo control device of an apparatus for recording information on and reproducing information from an optical recording medium set in the apparatus, the apparatus comprising an optical system for leading a laser beam emitted from a light source to a recording surface of the optical recording medium and a laser beam reflected by the recording surface of the recording medium to a photo detector and a read signal generator for generating a read signal in accordance with an output signal of the photo detector. The tilt servo control device determines a type of the optical recording medium, generates a tilt drive signal so as to reduce a tilt angle at a position of the laser beam irradiating the recording surface and an optical axis of the laser beam by a method for generating a tilt drive signal corresponding to the recording medium type, and drives a tilt angle adjuster for adjusting the tilt angle in accordance with the tilt drive signal.
    • 一种用于从设备中设置的光记录介质上记录信息并从其再现信息的装置的倾斜伺服控制装置,该装置包括用于将从光源发射的激光束引导到光记录介质的记录表面的光学系统 以及由记录介质的记录表面反射到光电检测器的激光束和用于根据光电检测器的输出信号产生读取信号的读取信号发生器。 倾斜伺服控制装置确定光学记录介质的类型,产生倾斜驱动信号,以便减少激光束照射记录表面的位置处的倾斜角度和激光束的光轴。 与记录介质类型对应的倾斜驱动信号,并且驱动用于根据倾斜驱动信号调整倾斜角度的倾斜角度调节器。