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11. 发明授权

US06834030B2 Optical disk apparatus 有权
标题翻译：检测异常状态的盘装置
公开(公告)号：US06834030B2
公开(公告)日：2004-12-21
申请号：US10463368
申请日：2003-06-17
申请人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
发明人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
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。

12. 发明授权

US06714493B1 Optical disk apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06714493B1
公开(公告)日：2004-03-30
申请号：US09696843
申请日：2000-10-26
申请人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
发明人： Takashi Kishimoto , Takeharu Yamamoto , Kenji Fujiune , Katsuya Watanabe
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。

13. 发明授权

US06498772B1 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US06498772B1
公开(公告)日：2002-12-24
申请号：US09665278
申请日：2000-09-19
申请人： Kenji Fujiune , Takashi Kishimoto , Takeharu Yamamoto , Katsuya Watanabe
发明人： Kenji Fujiune , Takashi Kishimoto , Takeharu Yamamoto , Katsuya Watanabe
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。

14. 发明授权

US07327642B2 Method of moving a beam spot between information storage layers of an optical disk 失效
标题翻译：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。

15. 发明授权

US07218582B2 Optical disc drive 失效
标题翻译：光盘驱动器
公开(公告)号：US07218582B2
公开(公告)日：2007-05-15
申请号：US10735009
申请日：2003-12-12
申请人： Rie Takahashi , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune , Katsuya Watanabe
发明人： Rie Takahashi , Takeharu Yamamoto , Takashi Kishimoto , Kenji Fujiune , Katsuya Watanabe
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。

16. 发明授权

US06356522B1 Optical disk drive 失效
标题翻译：光盘驱动器
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。

17. 发明授权

US6028826A Optical disk apparatus performing correction of phase difference tracking error signal, adjustment of focus position and process of gain adjustment 失效
标题翻译：光盘装置执行相位差跟踪误差信号的校正，调整焦点位置和增益调整处理
公开(公告)号：US6028826A
公开(公告)日：2000-02-22
申请号：US932192
申请日：1997-09-17
申请人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Takashi Kishimoto
发明人： Takeharu Yamamoto , Katsuya Watanabe , Mitsuro Moriya , Takashi Kishimoto
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。

18. 发明授权

US08085631B2 Tracking control device, tracking control method, and optical disc apparatus 有权
标题翻译：跟踪控制装置，跟踪控制方法和光盘装置
公开(公告)号：US08085631B2
公开(公告)日：2011-12-27
申请号：US12793038
申请日：2010-06-03
申请人： Takashi Kishimoto , Takeharu Yamamoto , Yoshirou Kashiwabara , Akihiro Arai
发明人： Takashi Kishimoto , Takeharu Yamamoto , Yoshirou Kashiwabara , Akihiro Arai
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B2007/0013
摘要： The invention provides a tracking control device, a tracking control method, and an optical disc apparatus that enable to stably perform the tracking control, and reduce an influence of stray light from the other layer on the tracking control. A sub push-pull signal correcting section corrects a sub push-pull signal to be generated from returning light of a sub beam in such a manner that a track crossing component of a main push-pull signal to be generated from returning light of a main beam, and a track crossing component of the sub push-pull signal to be generated from the returning light of the sub beam are canceled. A low pass filter reduces a high frequency component of the sub push-pull signal corrected by the sub push-pull signal correcting section. A subtractor subtracts a sub push-pull signal passing the low pass filter from the main push-pull signal to thereby generate a tracking error signal.
摘要翻译：本发明提供一种跟踪控制装置，跟踪控制方法和光盘装置，其能够稳定地执行跟踪控制，并且减少来自另一层的杂散光对跟踪控制的影响。子推挽信号校正部分校正从子光束的返回光产生的副推挽信号，使得从主信号的返回光产生的主推挽信号的轨道交叉分量并且从副光束的返回光产生的副推挽信号的轨迹交叉分量被消除。低通滤波器降低由副推挽信号校正部校正的副推挽信号的高频分量。减法器从主推挽信号中减去通过低通滤波器的副推挽信号，从而产生跟踪误差信号。

19. 发明授权

US07193941B2 Optical disc drive with clock synchronization and rotational speed detection 失效
标题翻译：具有时钟同步和转速检测的光盘驱动器
公开(公告)号：US07193941B2
公开(公告)日：2007-03-20
申请号：US10401449
申请日：2003-03-28
申请人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
发明人： Takeharu Yamamoto , Yoshihiro Kanda , Takashi Kishimoto , Rie Takahashi , Tetsuya Shihara
IPC分类号： G11B27/10
CPC分类号： G11B7/0053 , G11B7/08517 , G11B19/28 , G11B20/10 , G11B20/1258 , G11B27/24 , G11B2020/10916 , G11B2020/1239 , G11B2020/1267 , G11B2020/1287 , G11B2020/1288 , G11B2220/216 , G11B2220/2537 , G11B2220/2541 , G11B2220/2562 , G11B2220/2575
摘要： An optical disc drive includes: a motor for rotating an optical disc thereon; a photoelectric transducer for converting a light beam, reflected from or transmitted through the disc, into an electric signal; a clock sync signal reader for extracting and outputting a read signal, representing a clock synchronization mark, from the electric signal; a clock generator for generating a clock signal having a variable frequency; a phase locking controller for controlling the clock generator to synchronize the clock signal in phase with the output signal of the clock sync signal reader; and a mechanism for displacing a light beam spot toward a target track on the disc. During a seek operation of displacing the light beam spot toward the target track, the clock generator is controlled to obtain a frequency to be expected on the target track and output a clock signal having the expected frequency.
摘要翻译：光盘驱动器包括：用于在其上旋转光盘的马达; 用于将从光盘反射或透过光盘的光束转换为电信号的光电传感器; 时钟同步信号读取器，用于从电信号中提取并输出表示时钟同步标记的读取信号; 时钟发生器，用于产生具有可变频率的时钟信号; 相位锁定控制器，用于控制时钟发生器，使时钟信号同步于时钟同步信号读取器的输出信号; 以及用于将光束点移向盘上的目标轨道的机构。在将光束点移向目标轨道的寻道操作期间，控制时钟发生器以获得目标轨道上预期的频率并输出具有预期频率的时钟信号。

20. 发明授权

US06891785B2 Optical disc reproduction apparatus 失效
标题翻译：光盘再现装置
公开(公告)号：US06891785B2
公开(公告)日：2005-05-10
申请号：US10153215
申请日：2002-05-21
申请人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
发明人： Takeharu Yamamoto , Takashi Kishimoto , Yoshihiro Kanda , Hiroyuki Yamaguchi
IPC分类号： G11B7/0037 , G11B7/007 , G11B20/14 , G11B20/18 , G11B27/19 , G11B27/22 , G11B27/24 , G11B27/26 , H03L7/08 , G11B7/00
CPC分类号： G11B27/24 , G11B7/00375 , G11B7/00745 , G11B20/1403 , G11B20/1883 , G11B20/1889 , G11B27/19 , G11B27/22 , G11B27/26 , G11B2220/20 , H03L7/08
摘要： An optical disc reproduction apparatus includes a sector detection section for detecting a sector; a sector reproduction time measuring section for measuring a reproduction time of the sector, and outputting sector reproduction time data which represents the measured reproduction time of the sector; an unrecorded portion detection section for detecting an unrecorded portion which is a portion of the sector in which no data is recorded; an unrecorded portion time measuring section for measuring a reproduction time of the unrecorded portion, and outputting unrecorded portion time data which represents the measured reproduction time of the unrecorded portion; and a sector determination section for determining whether the sector is an unrecorded sector or not, based on a relationship between the sector reproduction time data and the unrecorded portion time data, the unrecorded sector being a sector which is in an unrecorded state.
摘要翻译：光盘再现装置包括用于检测扇区的扇区检测部分; 扇区再现时间测量部分，用于测量扇区的再现时间，并输出表示所测量的扇区再现时间的扇区再现时间数据; 未记录部分检测部分，用于检测作为不记录数据的扇区的一部分的未记录部分; 未记录部分时间测量部分，用于测量未记录部分的再现时间，并输出表示未记录部分的测量再现时间的未记录部分时间数据; 以及扇区确定部分，用于基于扇区再现时间数据和未记录部分时间数据之间的关系来确定扇区是否是未记录扇区，未记录扇区是处于未记录状态的扇区。

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