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公开(公告)号：US06356522B1
公开(公告)日：2002-03-12
申请号：US09406796
申请日：1999-09-28
申请人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Hiromichi Ishibashi , Takashi Kishimoto
发明人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Hiromichi Ishibashi , Takashi Kishimoto
IPC分类号： G11B700
CPC分类号： G11B27/24 , G11B7/0037 , G11B7/08517 , G11B2220/216 , G11B2220/218 , G11B2220/2562 , G11B2220/2575
摘要： In performing CLV readout, a target frequency is corrected based on current and target numbers of revolutions of a disk motor during a seek operation, thereby controlling the frequency of a read clock signal at a value approximately equal to the corrected target frequency. In performing CAV readout on the other hand, the frequency of the read clock signal is approximately equalized with a data read frequency at a seek destination. By performing these frequency control operations, data reading can be started quickly enough after the seek operation is finished. In reading out information from a recordable disk with wobbling tracks on a data portion, frequency control is performed using a wobble signal with respect to an unrecorded data portion, and phase locking control is performed using a data signal with respect to an address portion. In this manner, an address can be read out constantly.
摘要翻译： 在执行CLV读出时，基于搜索操作期间的盘式电动机的转数的当前和目标数来校正目标频率，从而将读取时钟信号的频率控制在大致等于校正的目标频率的值。 另一方面，在执行CAV读出时，读取时钟信号的频率近似地与搜索目的地的数据读取频率相等。 通过执行这些频率控制操作，可以在搜索操作完成之后足够快地开始数据读取。 在从数据部分的摆动磁迹的可记录磁盘中读出信息时，使用相对于未记录数据部分的摆动信号进行频率控制，并且使用相对于地址部分的数据信号执行相位锁定控制。 以这种方式，可以不断地读出地址。
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2.发明授权
公开(公告)号：US6028826A
公开(公告)日：2000-02-22
申请号：US932192
申请日：1997-09-17
IPC分类号： G11B7/09
CPC分类号： G11B7/0906 , G11B7/094 , G11B7/0941 , G11B7/0946 , G11B7/0948 , G11B7/0901
摘要： An optical disk apparatus includes a rotating device for rotating a recording medium at a prescribed reproduction rate. A converging device converges a light beam on the recording medium. A moving device moves the converging device so as to cause the converged light beam to cross a track of the recording medium. A light detection device has four areas for receiving light reflected by the recording medium and respectively outputting first, second, third and fourth detection signals. A phase correction device outputs first and second correction signals respectively by correcting the phase of the first and second detection signals in accordance with a correction amount. A tracking error detection device detects a positional offset between the converged light beam and the track based on a phase difference between first and second addition signals and outputs a tracking error signal indicating the positional offset. The first addition signal is obtained by adding the first correction signal and the fourth detection signal. The second addition signal is obtained by adding the second correction signal and the third detection signal. A tracking control device performs feedback control of the moving device so that the light beam converged on the recording medium is positioned on the track, based on the tracking error signal. An adjustment device adjusts the correction amount for the phase correction device based on an asymmetry level based on the tracking error signal without causing the tracking control device to perform feedback control.
摘要翻译： 光盘装置包括用于以规定的再现速度旋转记录介质的旋转装置。 会聚装置将光束会聚在记录介质上。 移动装置移动会聚装置，使会聚的光束穿过记录介质的轨迹。 光检测装置具有用于接收由记录介质反射的光并分别输出第一，第二，第三和第四检测信号的四个区域。 相位校正装置根据校正量分别校正第一和第二检测信号的相位，分别输出第一和第二校正信号。 跟踪误差检测装置根据第一和第二相加信号之间的相位差来检测会聚光束与轨道之间的位置偏移，并输出表示位置偏移的跟踪误差信号。 通过将第一校正信号和第四检测信号相加来获得第一相加信号。 通过将第二校正信号和第三检测信号相加来获得第二加法信号。 跟踪控制装置执行移动装置的反馈控制，使得会聚在记录介质上的光束基于跟踪误差信号位于轨道上。 调整装置基于跟踪误差信号，基于不对称级别来调整相位校正装置的校正量，而不使跟踪控制装置执行反馈控制。
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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：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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公开(公告)号：US06498772B1
公开(公告)日：2002-12-24
申请号：US09665278
申请日：2000-09-19
IPC分类号： G11B700
CPC分类号： G11B7/0953
摘要： An optical apparatus includes a generator for generating a sine wave based on a rotating disc-shaped information carrier, and an eccentricity measuring device for measuring gain and phase of a sine wave corresponding to eccentricity of the information carrier based on the driving signal from the tracking control and on the measured rotation frequency. Also included is a waveform shaper for shaping the gain and phase of the sine wave generated by the sine wave generator using the measured gain and phase obtained by the eccentricity measuring device. An eccentricity correction is applied by adding together the sine wave shaped by the waveform shaper and the driving signal from the tracking control to drive an optical beam on a desired track of the rotating disc.
摘要翻译： 一种光学装置包括：基于旋转的盘形信息载体产生正弦波的发生器，以及用于根据来自跟踪的驱动信号测量与信息载体的偏心相对应的正弦波的增益和相位的偏心测量装置 控制和测量的旋转频率。 还包括波形整形器，用于使用由偏心测量装置获得的测量的增益和相位来对由正弦波发生器产生的正弦波的增益和相位进行整形。 通过将由波形整形器形成的正弦波和来自跟踪控制的驱动信号相加在驱动旋转盘的期望轨道上的光束，来应用偏心校正。
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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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8.发明授权Optical disc device for varying PLL characteristic and servo characteristic based on actual reproduction speed 失效用于根据实际再现速度改变PLL特性和伺服特性的光盘装置公开(公告)号：US06317395B1
公开(公告)日：2001-11-13
申请号：US09217831
申请日：1998-12-22
IPC分类号： G11B700
CPC分类号： G11B7/0908 , G11B7/0941
摘要： The object of the present invention is to realize a stable control and a stable signal reproduction in an optical disc device. When a head unit (110) is shifted in a radial direction or a reproduction speed is varied, a reproduction speed is detected based on a radial position at which the head unit is located and the number of rotaions of a motor (111), and settings of a focusing gain, a tracking gain, an amplification factor of an equalizer circuit (130), a band-limited frequency, a loop gain of a PLL circuit (131) and a divide ratio are varied based on said reproduction speed. Further, an accurate detection of an out of focus operation can be executed by using either one signal of a reflected-light quantity, an RF signal amplitude and a drive of a focusing actuator, or combined signals thereof. Thereby, a stable control and signal reproduction can be provided.
摘要翻译： 本发明的目的是在光盘装置中实现稳定的控制和稳定的信号再现。 当头单元（110）沿径向移动或再现速度变化时，基于头单元所在的径向位置和马达（111）的旋转数目来检测再现速度，并且 基于所述再现速度，改变聚焦增益，跟踪增益，均衡器电路（130）的放大系数，带限频率，PLL电路（131）的环路增益和分频比的设置。 此外，可以通过使用反射光量的一个信号，RF信号幅度和聚焦致动器的驱动器或其组合信号来执行对焦操作的精确检测。 从而可以提供稳定的控制和信号再现。
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公开(公告)号：US20050237867A1
公开(公告)日：2005-10-27
申请号：US11159801
申请日：2005-06-23
IPC分类号： G11B7/007 , G11B7/085 , G11B20/10 , G11B20/12 , G11B27/24 , G11B27/32 , G11B7/09 , G11B7/125
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：US06628580B1
公开(公告)日：2003-09-30
申请号：US09545877
申请日：2000-04-07
IPC分类号： G11B700
CPC分类号： G11B7/08529 , G11B7/08517 , G11B7/0906 , G11B7/0917 , G11B7/0953 , G11B2007/0013
摘要： In track jumping or focus jumping in an optical recording and reproducing apparatus for an optical disk, a light beam is accelerated and decelerated from a track to an adjacent one or from an information plane to an adjacent one in the optical disk. A moving time of light beam under acceleration to an adjacent track or information plane for jumping is measured from the start of acceleration to a predetermined point according to tracking o focus error signal. Then, the deceleration signal for tracking or focus actuator is changed on amplitude or period according to the measured period. Thus, track or focus jumping can be performed stably against external disturbances. Alternatively, the light beam is forced to be driven until the level of the tracking or focus error signal is decreased below a predetermined value after the output of the deceleration signal is completed.
摘要翻译： 在用于光盘的光学记录和再现装置中的轨道跳跃或聚焦跳跃中，光束从光盘到光盘加速和减速到相邻的一个或从信息平面到相邻的一个。 根据跟踪o聚焦误差信号，从加速开始到预定点测量加速下的光束到相邻轨迹或信息平面的移动时间。 然后，跟踪或聚焦致动器的减速信号根据测量周期在幅度或周期上改变。 因此，可以针对外部干扰稳定地执行跟踪或聚焦跳跃。 或者，在完成减速信号的输出之后，迫使光束被驱动直到跟踪或聚焦误差信号的电平降低到预定值以下。
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