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公开(公告)号：USRE41372E1
公开(公告)日：2010-06-08
申请号：US10750527
申请日：2003-12-31
申请人： Yuu Okada , Kenji Fujiune , Katsuya Watanabe , Takeharu Yamamoto , Jun Kikuchi
发明人： Yuu Okada , Kenji Fujiune , Katsuya Watanabe , Takeharu Yamamoto , Jun Kikuchi
IPC分类号： G11B7/00
CPC分类号： G11B7/0946 , G11B7/08511 , G11B7/0945 , G11B7/0948 , G11B2007/0006
摘要： An optical disc apparatus includes: a converging section for converging a light beam and irradiating a rotating information medium with the converged light beam; a moving section for moving the converging section, thereby moving a converging point of the converged light beam in a direction perpendicular to an information surface of the information medium; a converging state detection section for generating a focus servo signal which represents a converging state of the light beam on the information medium based on reflected light or transmitted light of the light beam from the information medium; a focus servo control section for controlling the moving section based on the focus servo signal, so that the light beam reaches a predetermined converging state on the information medium; and a focus pull-in section for turning ON the control by the focus servo control section, wherein the focus pull-in section turns ON the control by the focus servo control section in a case where the focus pull-in section determines that the converging point of the light beam is located in the vicinity of the minimum velocity position on the information medium axial deviation.
摘要翻译： 一种光盘装置，包括：聚光部分，用于会聚光束并用会聚光束照射旋转的信息介质; 移动部分，用于移动会聚部分，从而沿着与信息介质的信息表面垂直的方向移动会聚光束的会聚点; 收敛状态检测部分，用于基于来自信息介质的光束的反射光或透射光产生表示光束在信息介质上的会聚状态的聚焦伺服信号; 聚焦伺服控制部分，用于基于聚焦伺服信号控制移动部分，使得光束在信息介质上达到预定的会聚状态; 以及聚焦引入部，用于使聚焦伺服控制部的控制接通，其中，在聚焦引入部确定会聚的情况下，聚焦引入部使聚焦伺服控制部的控制接通 光点的位置位于信息介质轴向偏差的最小速度位置附近。
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42.发明授权Method of moving a beam spot between information storage layers of an optical disk 失效在光盘的信息存储层之间移动光束点的方法公开(公告)号：US07327642B2
公开(公告)日：2008-02-05
申请号：US10423796
申请日：2003-04-25
申请人： Shinichi Yamada , Katsuya Watanabe , Yuichi Kuze , Kenji Fujiune , Kenji Kondo , Takashi Kishimoto , Takeharu Yamamoto
发明人： Shinichi Yamada , Katsuya Watanabe , Yuichi Kuze , Kenji Fujiune , Kenji Kondo , Takashi Kishimoto , Takeharu Yamamoto
IPC分类号： G11B7/095
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，透镜，聚焦部分，球面像差校正器，聚焦信号发生器，增益计算器和处理器。 聚焦部分通过控制透镜的位置在光盘的信息存储层上形成聚焦状态的光斑。 球面像差校正器根据提供给球面像差校正器的驱动信号的驱动值，将聚焦状态下的束斑改变为球面像差。 聚焦信号发生器产生表示束斑的聚焦状态的聚焦信号。 增益计算器响应于聚焦信号计算聚焦控制系统的环路增益。 处理器通过环路增益确定球面像差校正器的驱动值。
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公开(公告)号：US07218582B2
公开(公告)日：2007-05-15
申请号：US10735009
申请日：2003-12-12
IPC分类号： G11B7/00
CPC分类号： G11B7/094
摘要： An optical disc drive is used to read and/or write data from/on an optical disc having a data storage layer. The drive corrects electrical offset while reading and/or writing data. The drive updates a correction value based on an electrical offset detected at correcting operation or a value derived using electrical offset values that has been detected and stored, without detecting an electrical offset at correcting operation. Therefore, the optical disc drive can correct the electrical offset less often.
摘要翻译： 光盘驱动器用于从具有数据存储层的光盘上读取数据和/或写入数据。 驱动器在读取和/或写入数据时纠正电气偏移。 驱动器基于在校正操作中检测到的电偏移或使用已经被检测和存储的电偏移值导出的值而更新校正值，而不检测校正操作的电偏移。 因此，光盘驱动器可以更少地校正电偏移。
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44.发明授权Optical disc drive for identifying and processing multiple optical disc types 有权用于识别和处理多种光盘类型的光盘驱动器公开(公告)号：US07190650B2
公开(公告)日：2007-03-13
申请号：US10648018
申请日：2003-08-26
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B19/12 , G11B2007/0006
摘要： An optical disc drive for processing multiple types of optical discs, of which information storage layers have different depths, includes: a light source; a lens for forming a beam spot; a photodetector for outputting a reflected light signal; a spherical aberration generator for generating a minimum spherical aberration when the beam spot is at a reference depth; a focus drive signal generator for moving the beam spot perpendicularly to the information storage layer of a loaded disc by controlling a position of the lens; a light quantity detector for generating a light quantity signal on receiving a reflected light signal every time the beam spot is moved; and a type recognizer for recognizing the type of the loaded disc by estimating the depth of the information storage layer according to a degree of symmetry of the waveform of the light quantity signal.
摘要翻译： 一种光盘驱动器，用于处理信息存储层具有不同深度的多种类型的光盘，包括：光源; 用于形成束斑的透镜; 用于输出反射光信号的光电检测器; 球面像差发生器，用于当束斑在参考深度时产生最小球面像差; 聚焦驱动信号发生器，用于通过控制透镜的位置来使束斑垂直于加载盘的信息存储层移动; 光量检测器，用于在每次所述束斑移动时在接收到反射光信号时产生光量信号; 以及用于通过根据光量信号的波形的对称度估计信息存储层的深度来识别加载的盘的类型的类型识别器。
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公开(公告)号：US06925048B2
公开(公告)日：2005-08-02
申请号：US10046561
申请日：2001-11-09
CPC分类号： G11B20/0026 , G11B7/00736 , G11B7/08505 , G11B20/10009 , G11B27/24 , G11B27/329 , G11B2020/1259 , G11B2220/211 , G11B2220/2562
摘要： An optical disc apparatus according to the present invention is usable for an optical disc including a bar code area and a control data area adjacent to the bar code area in a radial direction of the optical disc. The optical disc apparatus includes an optical head for directing an optical beam toward the optical disc so as to form an optical spot on the optical disc and output a signal in accordance with the optical beam reflected by the optical disc, a bar code area determination section for determining whether or not the optical spot is positioned on the bar code area of the optical disc based on the signal output by the optical head; and a control section for controlling the optical head so that the optical spot moves toward the control data area, when the optical spot is determined to be positioned on the bar code area.
摘要翻译： 根据本发明的光盘装置可用于包括条形码区域和与光盘径向方向上的条形码区域相邻的控制数据区域的光盘。 光盘装置包括用于将光束引向光盘以在光盘上形成光点并根据由光盘反射的光束输出信号的光学头，条形码区域确定部分 用于基于由光学头输出的信号确定光点是否位于光盘的条形码区域上; 以及控制部，用于当确定光点被定位在条形码区域上时，控制光学头，使得光点朝向控制数据区移动。
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公开(公告)号：US07480232B2
公开(公告)日：2009-01-20
申请号：US11159801
申请日：2005-06-23
IPC分类号： G11B7/24
CPC分类号： G11B20/0026 , G11B7/00736 , G11B7/08505 , G11B20/10009 , G11B27/24 , G11B27/329 , G11B2020/1259 , G11B2220/211 , G11B2220/2562
摘要： An optical disc apparatus according to the present invention is usable for an optical disc including a bar code area and a control data area adjacent to the bar code area in a radial direction of the optical disc. The optical disc apparatus includes an optical head for directing an optical beam toward the optical disc so as to form an optical spot on the optical disc and output a signal in accordance with the optical beam reflected by the optical disc; a bar code area determination section for determining whether or not the optical spot is positioned on the bar code area of the optical disc based on the signal output by the optical head; and a control section for controlling the optical head so that the optical spot moves toward the control data area, when the optical spot is determined to be positioned on the bar code area.
摘要翻译： 根据本发明的光盘装置可用于包括条形码区域和与光盘径向方向上的条形码区域相邻的控制数据区域的光盘。 光盘装置包括用于将光束引向光盘以在光盘上形成光点并根据由光盘反射的光束输出信号的光学头; 条形码区域确定部分，用于基于由光头输出的信号确定光点是否位于光盘的条形码区域上; 以及控制部，用于当确定光点被定位在条形码区域上时，控制光学头，使得光点朝向控制数据区移动。
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公开(公告)号：US07130250B2
公开(公告)日：2006-10-31
申请号：US10317094
申请日：2002-12-12
申请人： Kenji Fujiune , Yuichi Kuze , Kenji Kondo , Shinichi Yamada , Katsuya Watanabe
发明人： Kenji Fujiune , Yuichi Kuze , Kenji Kondo , Shinichi Yamada , Katsuya Watanabe
CPC分类号： G11B7/08511 , G11B2007/0013
摘要： An optical disk apparatus includes an optical detector which has light receiving areas divided nearly concentrically with an optical beam and outputs a signal corresponding to the amount of the reflected light from an optical disk. A surface vicinity detecting section adds up signals from all the light-receiving areas of the optical detector and outputs a detection signal. The detection signal continuously varies so as to have one maximum level while a beam spot of the optical beam moves from the surface of the information medium to the information plane. An information plane detecting section judges that the focus or the beam spot of the optical beam comes closer to the information plane of the optical disk by detecting the gradient of the detection signal. An approach of a condensing lens and the optical disk is judged based on the judgment results, and thus a collision of the condensing lens and the optical disk can be prevented.
摘要翻译： 光盘装置包括光检测器，其具有与光束几乎同心分开的光接收区域，并且输出与来自光盘的反射光量对应的信号。 表面附近检测部将来自光检测器的所有光接收区域的信号相加，并输出检测信号。 检测信号连续变化，从而具有一个最大值，同时光束的光束点从信息介质的表面移动到信息平面。 通过检测检测信号的梯度，信息面检测部判断出光束的聚焦或光点靠近光盘的信息平面。 基于判断结果判断聚光透镜和光盘的接近，从而可以防止聚光透镜与光盘的碰撞。
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公开(公告)号：US20050219976A1
公开(公告)日：2005-10-06
申请号：US10520774
申请日：2003-08-13
IPC分类号： G11B21/08 , G11B7/004 , G11B7/005 , G11B7/085 , G11B7/09 , G11B19/20 , G11B19/247 , G11B19/28 , G11B5/09
CPC分类号： G11B19/20 , G11B7/08511 , G11B7/08529 , G11B19/247
摘要： The optical disc apparatus comprises a disc motor (114) operable to rotate an optical disc (1), a traverse (111) operable to move an optical beam spot which is irradiated on an optical beam on the optical disc (1) to the radius direction of the optical disc (1), a linear velocity operation unit (117) operable to detect the linear velocity of the optical beam spot, a disc motor control unit (116) operable to control the disc motor (114) so that the linear velocity detected by the linear velocity operation unit (117) remains roughly invariable in an arbitrary radius location on the optical disc (1) when information recorded on the optical disc (1) is read out, a search control unit (121) and a location profile adjustment unit (118) operable to control a traverse (111) so as to prevent the linear velocity from decreasing to the permissible linear velocity or below when the optical beam spot is moved by the traverse (111).
摘要翻译： 光盘装置包括可操作以旋转光盘（1）的圆盘马达（114），可操作以将照射在光盘（1）上的光束上的光束点移动到半径 光盘（1）的方向，可操作以检测光束点的线速度的线速度运算单元（117），盘马达控制单元（116），其可操作以控制盘马达（114），使得线性 当读出记录在光盘（1）上的信息被读出时，由线速度操作单元（117）检测的速度在光盘（1）上的任意半径位置保持粗略不变，搜索控制单元（121）和位置 轮廓调整单元（118），其可操作以控制横动（111），以防止当光束斑点通过横动（111）移动时，线速度降低到允许的线速度或更低。
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公开(公告)号：US06834030B2
公开(公告)日：2004-12-21
申请号：US10463368
申请日：2003-06-17
IPC分类号： G11B700
CPC分类号： G11B7/0946 , G11B7/0901 , G11B7/0908 , G11B7/0941 , G11B7/095 , G11B7/0953
摘要： An optical disk apparatus includes: a light irradiator operable to converge a light beam and irradiate an information carrier with the converged light beam; a traverse motor operable to move the light beam in a direction traversing a track formed on a surface of the information carrier; and a tracking controller operable to control the traverse motor to scan the track with the light beam. The tracking controller includes a deviation detector operable to generate a detection signal, a tracking driving circuit operable to generate a driving signal, an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period and an abnormal state detector operable to detect an abnormal state of the traverse motor based on an output of the integrator.
摘要翻译： 光盘装置包括：光照射器，其可操作以会聚光束并用会聚光束照射信息载体; 横动马达，其可操作以沿着穿过形成在信息载体的表面上的轨道的方向移动光束; 以及跟踪控制器，其可操作以控制横动马达以光束扫描轨道。 跟踪控制器包括可操作以产生检测信号的偏差检测器，可操作以产生驱动信号的跟踪驱动电路，可用于在预定时间段内对与驱动信号相对应的信号的大小进行积分的积分器和异常状态检测器 可操作以基于积分器的输出来检测横动马达的异常状态。
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公开(公告)号：US06714493B1
公开(公告)日：2004-03-30
申请号：US09696843
申请日：2000-10-26
IPC分类号： G11B700
CPC分类号： G11B7/0946 , G11B7/0901 , G11B7/0908 , G11B7/0941 , G11B7/095 , G11B7/0953
摘要： An optical disk apparatus of the present invention includes: a light irradiator operable to converge a light beam and to irradiate an information carrier (a recording medium) with the converged light beam; a moving means operable to move a converging point of the light beam in a direction substantially perpendicular to a surface of the information carrier; and a focusing controller operable to control the moving means to place the converging point of the light beam at a predetermined position. The focusing controller includes: a converging state detector operable to generate a detection signal corresponding to a converging state of the light beam on the information carrier; a focusing driving means operable to generate a driving signal for driving the moving means based on the detection signal; an integrator operable to integrate a magnitude of a signal corresponding to the driving signal over a predetermined time period; and an abnormal state detector operable to detect an abnormal state of the moving means based on an output of the integrator.
摘要翻译： 本发明的光盘装置包括：光照射器，其可操作以会聚光束并照射具有会聚光束的信息载体（记录介质）; 移动装置，可操作以沿着基本垂直于信息载体表面的方向移动光束的会聚点; 以及聚焦控制器，其可操作以控制所述移动装置将所述光束的会聚点放置在预定位置。 聚焦控制器包括：会聚状态检测器，用于产生对应于光束在信息载体上的会聚状态的检测信号; 聚焦驱动装置，用于根据检测信号产生用于驱动移动装置的驱动信号; 积分器，其可操作以在预定时间段内积分对应于所述驱动信号的信号的幅度; 以及异常状态检测器，其可操作以基于积分器的输出来检测移动装置的异常状态。
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