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1.发明公开Optical disc drive, method of moving beam spot and computer-executable program therefor 审中-公开光盘驱动器，用于调整光束光点和计算机程序为此方法
公开(公告)号：EP1357548A3
公开(公告)日：2007-04-18
申请号：EP03009565.7
申请日：2003-04-28
发明人： Yamada, Shinichi , Watanabe, Katsuya , Kuze, Yuichi , Fujiune, Kenji , Kondo, Kenji , Kishimoto, Takashi , Yamamoto, Takeharu
CPC分类号： G11B7/13925 , G11B7/08511 , G11B7/0908 , G11B7/0945 , G11B7/0956 , G11B2007/0013
摘要： An optical disc drive includes a light source, a lens, a focusing section, a spherical aberration corrector, a focus signal generator, a gain calculator and a processor. The focusing section forms a beam spot in a focusing state on the information storage layer of an optical disc by controlling the position of the lens. The spherical aberration corrector changes a spherical aberration with the beam spot in a focusing state according to a drive value of a driving signal supplied to the spherical aberration corrector. The focus signal generator generates a focus signal representing the focusing state of the beam spot. The gain calculator calculates a loop gain of a focus control system in response to the focus signal. The processor determines the drive value for the spherical aberration corrector by the loop gain.
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2.发明公开
公开(公告)号：EP0354754A3
公开(公告)日：1992-03-18
申请号：EP89308029.1
申请日：1989-08-07
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/094
摘要： In an apparatus which focuses a light beam (6) on a rotating recording medium (10) in order to record and/or reproduce information, the light beam on the recording medium is controlled of its focus so that a prescribed focusing condition is accomplished. By storing a relation between a target position of focus control and the amplitude of a reproduced signal and by obtaining an optimum target position of focus control in accordance with such stored information, the target position of the focus control can be precisely and quickly adjusted, thereby properly controlling the light beam to focus on the recording medium.
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3.发明授权Method and apparatus for adjusting target position for focusing of light beam 失效用于调整为了集中光束的目标的位置的方法和装置。
公开(公告)号：EP0354754B1
公开(公告)日：1994-03-09
申请号：EP89308029.1
申请日：1989-08-07
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/094
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公开(公告)号：EP0404449A3
公开(公告)日：1992-09-23
申请号：EP90306531.6
申请日：1990-06-15
CPC分类号： G11B7/08529 , G11B7/08511
摘要： A data-track search apparatus is provided with a tracking error detection unit for detecting a positioning error between a light beam on a record carrier and a track, a moving unit for moving the light beam on the record carrier in a direction traversing the tracks on the record carrier, a focusing control failure detection unit for detecting a focusing control failure, and a control unit for controlling the moving unit in response to an output signal from the tracking error detection unit during the search for an aimed track. The control unit regulates the moving unit so as not to accelerate but to decelerate the latter in the event of the focusing control failure.
摘要翻译： 数据轨道搜索装置设有跟踪误差检测单元，用于检测记录载体上的光束与轨道之间的定位误差;移动单元，用于沿着穿过轨道的方向在记录载体上移动光束; 记录载体，用于检测聚焦控制故障的聚焦控制故障检测单元，以及用于在搜索目标轨道期间响应于来自跟踪误差检测单元的输出信号来控制移动单元的控制单元。 控制单元调节移动单元，以便在聚焦控制失败的情况下不加速而减速。
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公开(公告)号：EP0391677B1
公开(公告)日：1995-07-12
申请号：EP90303583.0
申请日：1990-04-03
发明人： Moriya, Mitsuro , Shibano, Masayuki , Yamaguchi, Hiroyuki , Yamada, Shinichi , Watanabe, Katsuya
IPC分类号： G11B21/08
CPC分类号： G11B7/08535 , G11B21/081
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6.发明公开Optical disc drive, method of moving beam spot and computer-executable program therefor 审中-公开光盘驱动器，用于调整光束光点和计算机程序为此方法
公开(公告)号：EP1357548A2
公开(公告)日：2003-10-29
申请号：EP03009565.7
申请日：2003-04-28
发明人： Yamada, Shinichi , Watanabe, Katsuya , Kuze, Yuichi , Fujiune, Kenji , Kondo, Kenji , Kishimoto, Takashi , Yamamoto, Takeharu
CPC分类号： G11B7/13925 , G11B7/08511 , G11B7/0908 , G11B7/0945 , G11B7/0956 , G11B2007/0013
摘要： An optical disc drive includes a light source, a lens, a focusing section, a spherical aberration corrector, a focus signal generator, a gain calculator and a processor. The focusing section forms a beam spot in a focusing state on the information storage layer of an optical disc by controlling the position of the lens. The spherical aberration corrector changes a spherical aberration with the beam spot in a focusing state according to a drive value of a driving signal supplied to the spherical aberration corrector. The focus signal generator generates a focus signal representing the focusing state of the beam spot. The gain calculator calculates a loop gain of a focus control system in response to the focus signal. The processor determines the drive value for the spherical aberration corrector by the loop gain.
摘要翻译： 光盘驱动器包括：光源，一个透镜，聚焦部，球面像差校正器，一个聚焦信号发生器，增益计算器和处理器。 聚焦部通过控制透镜的位置形成在光盘的信息记录层上的聚焦状态的光点。 球面像差校正器改变与在聚焦状态gemäß于提供给球差校正的驱动信号的驱动值的光束点的球面像差。 聚焦信号发生器基因率表示光束点的聚焦状态的聚焦信号。 增益计算器计算的聚焦控制系统的响应于所述聚焦信号的环路增益。 该处理器确定的地雷由环路增益的球面像差校正的驱动值。
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7.发明公开Load correction method in retrieval apparatus 失效Verfahren zur Korrektur der Antriebskraft einer Abtastvorrichtung。
公开(公告)号：EP0391677A1
公开(公告)日：1990-10-10
申请号：EP90303583.0
申请日：1990-04-03
发明人： Moriya, Mitsuro , Shibano, Masayuki , Yamaguchi, Hiroyuki , Yamada, Shinichi , Watanabe, Katsuya
IPC分类号： G11B21/08
CPC分类号： G11B7/08535 , G11B21/081
摘要： In an apparatus for searching desired track by transferring and controlling the reproduction position of the pickup for reproducing the signal recorded on a recording carrier (1) on the basis of reference transfer information, the traveling load is measured, and the value of the reference transfer information is corrected according to this measured value, so that the desired track may be searched stably. The transfer motor (13) is driven so that the reproduction position may move at a constant velocity, and the traveling load is measured (36). The transfer motor is driven so that the moving speed of the reproduction position or the time for moving a specified distance may be predetermined specific value, and by this driving signal, the value corresponding to the traveling load is determined.
摘要翻译： 在通过基于参考传送信息传送和控制用于再现记录载体（1）上的信号的拾取器的再现位置来搜索期望轨道的装置中，测量行驶载荷，并且参考传送 根据该测量值校正信息，从而可以稳定地搜索期望的轨迹。 驱动转印马达（13）使得再现位置可以以恒定速度移动，并测量行驶载荷（36）。 驱动转印马达使得再现位置的移动速度或者移动指定距离的时间可以是预定的特定值，并且通过该驱动信号确定与行驶载荷相对应的值。
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公开(公告)号：EP0404449A2
公开(公告)日：1990-12-27
申请号：EP90306531.6
申请日：1990-06-15
CPC分类号： G11B7/08529 , G11B7/08511
摘要： A data-track search apparatus is provided with a tracking error detection unit for detecting a positioning error between a light beam on a record carrier and a track, a moving unit for moving the light beam on the record carrier in a direction traversing the tracks on the record carrier, a focusing control failure detection unit for detecting a focusing control failure, and a control unit for controlling the moving unit in response to an output signal from the tracking error detection unit during the search for an aimed track. The control unit regulates the moving unit so as not to accelerate but to decelerate the latter in the event of the focusing control failure.
摘要翻译： 数据轨道搜索装置设有跟踪误差检测单元，用于检测记录载体上的光束与轨道之间的定位误差;移动单元，用于沿着穿过轨道的方向在记录载体上移动光束; 记录载体，用于检测聚焦控制故障的聚焦控制故障检测单元，以及用于在搜索目标轨迹期间响应于来自跟踪误差检测单元的输出信号来控制移动单元的控制单元。 控制单元调节移动单元，以便在聚焦控制失败的情况下不加速而减速。
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9.发明公开Method and apparatus for adjusting target position for focusing of light beam 失效用于调整为了集中光束的目标的位置的方法和装置。
公开(公告)号：EP0354754A2
公开(公告)日：1990-02-14
申请号：EP89308029.1
申请日：1989-08-07
CPC分类号： G11B7/0945 , G11B7/0908 , G11B7/094
摘要： In an apparatus which focuses a light beam (6) on a rotating recording medium (10) in order to record and/or reproduce information, the light beam on the recording medium is controlled of its focus so that a prescribed focusing condition is accomplished. By storing a relation between a target position of focus control and the amplitude of a reproduced signal and by obtaining an optimum target position of focus control in accordance with such stored information, the target position of the focus control can be precisely and quickly adjusted, thereby properly controlling the light beam to focus on the recording medium.
摘要翻译： 其中为了记录和/或再现信息的旋转的记录介质（10）上聚焦的光束（6）的装置，该记录介质上的光束被控制其聚焦所以没规定聚焦状态来完成的。 通过存储聚焦控制的目标位置和再现信号的幅度之间并且通过与搜索存储的信息在雅舞蹈聚焦控制的最佳目标位置的取得的关系，焦点控制的目标位置可以被精确地和迅速地调整，从而 正确地控制光束聚焦在记录介质上。
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