公开(公告)号：US20090175140A1

公开(公告)日：2009-07-09

申请号：US12343611

申请日：2008-12-24

申请人： Toshiteru Nakamura ,  Motoyuki Suzuki ,  Fumio Isshiki

发明人： Toshiteru Nakamura ,  Motoyuki Suzuki ,  Fumio Isshiki

IPC分类号： G11B20/10

CPC分类号： G11B20/10009 ,  G11B7/0901 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2537

摘要： An optical disc apparatus which detects an envelope of a tracking error signal in a record or playback mode of an optical disc having recording layers of a multilayer structure, which quantifies a variation caused by multilayer interference (to ΔTES), and which restricts a recording or playback rate when a relationship ΔTES>Vth is satisfied for a predetermined threshold Vth. With such an arrangement, degradation of a recording or reproducing performance or generation of running-off-track resulting from a variation in the tracking error signal caused by stray light reflected by ones of recording layers of the optical disc which are not a recording or reproducing target layer can be suppressed, and a good recording or playback quality can be obtained even in such an optical disc having the plurality of recording layers laminated therein.

摘要翻译： 一种光盘装置，其检测具有多层结构的记录层的光盘的记录或重放模式中的跟踪误差信号的包络，其量化由多层干涉（对DeltaTES）引起的变化，并且限制了记录或 当对于预定阈值Vth满足DeltaTES> Vth的关系时的重放速率。 通过这样的布置，由于由不是记录或再现的光盘的记录层反射的杂散光引起的跟踪误差信号的变化而导致记录或再现性能的劣化或产生跑步轨迹 可以抑制目标层，并且即使在其中层叠有多个记录层的光盘中也可以获得良好的记录或播放质量。

公开(公告)号：US07457221B2

公开(公告)日：2008-11-25

申请号：US11139382

申请日：2005-05-27

申请人： Takeyoshi Kataoka ,  Motoyuki Suzuki ,  Fumio Isshiki ,  Yoshinori Ishikawa

发明人： Takeyoshi Kataoka ,  Motoyuki Suzuki ,  Fumio Isshiki ,  Yoshinori Ishikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0053 ,  G11B7/0912 ,  G11B2007/0013

摘要： There is provided an optical disc recording/reproduction device capable of accurately performing the focus offset and spherical aberration correction even for an optical disc having no data recorded. The optical disc recording/reproduction device includes: an optical pickup having a spherical aberration corrector for correcting the spherical aberration of an objective lens; and various control units; and can generate a tracking error signal (TE) at least by a push-pull signal by the push-pull method. When an optical disc mounted is in an unrecorded state, the spherical aberration correction amount and the objective lens focus offset amount are adjusted according to the push-pull signal, predetermined data is recorded on the optical disc, and the reproduction signal obtained by the data is used to adjust the spherical aberration correction amount in the spherical aberration corrector of the optical pickup and the focus offset amount of the objective lens.

摘要翻译： 提供了即使对于没有记录数据的光盘也能够精确地执行聚焦偏移和球面像差校正的光盘记录/再现装置。 光盘记录/再现装置包括：具有用于校正物镜的球面像差的球面像差校正器的光学拾取器; 和各种控制单元; 并且可以通过推挽方法至少通过推挽信号产生跟踪误差信号（TE）。 当安装的光盘处于未记录状态时，根据推挽信号调整球面像差校正量和物镜聚焦偏移量，将预定数据记录在光盘上，并且通过数据获得的再现信号 用于调整光学拾取器的球面像差校正器中的球面像差校正量和物镜的聚焦偏移量。

公开(公告)号：US20060104183A1

公开(公告)日：2006-05-18

申请号：US11139382

申请日：2005-05-27

申请人： Takeyoshi Kataoka ,  Motoyuki Suzuki ,  Fumio Isshiki ,  Yoshinori Ishikawa

发明人： Takeyoshi Kataoka ,  Motoyuki Suzuki ,  Fumio Isshiki ,  Yoshinori Ishikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0053 ,  G11B7/0912 ,  G11B2007/0013

摘要： There is provided an optical disc recording/reproduction device capable of accurately performing the focus offset and spherical aberration correction even for an optical disc having no data recorded. The optical disc recording/reproduction device includes: an optical pickup having a spherical aberration corrector for correcting the spherical aberration of an objective lens; and various control units; and can generate a tracking error signal (TE) at least by a push-pull signal by the push-pull method. When an optical disc mounted is in an unrecorded state, the spherical aberration correction amount and the objective lens focus offset amount are adjusted according to the push-pull signal, predetermined data is recorded on the optical disc, and the reproduction signal obtained by the data is used to adjust the spherical aberration correction amount in the spherical aberration corrector of the optical pickup and the focus offset amount of the objective lens.

摘要翻译： 提供了即使对于没有记录数据的光盘也能够精确地执行聚焦偏移和球面像差校正的光盘记录/再现装置。 光盘记录/再现装置包括：具有用于校正物镜的球面像差的球面像差校正器的光学拾取器; 和各种控制单元; 并且可以通过推挽方法至少通过推挽信号产生跟踪误差信号（TE）。 当安装的光盘处于未记录状态时，根据推挽信号调整球面像差校正量和物镜聚焦偏移量，将预定数据记录在光盘上，并且通过数据获得的再现信号 用于调整光学拾取器的球面像差校正器和物镜的聚焦偏移量的球面像差校正量。

公开(公告)号：US20050052964A1

公开(公告)日：2005-03-10

申请号：US10879779

申请日：2004-06-30

申请人： Shinji Fujita ,  Fumio Isshiki ,  Nobuyuki Maeda

发明人： Shinji Fujita ,  Fumio Isshiki ,  Nobuyuki Maeda

IPC分类号： G11B7/085 ,  G11B7/00 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/13727

摘要： A method and an optical disk apparatus that can accurately and stably correct the spherical aberration even for a blank write-once optical disk and can detect a spherical aberration error signal with a simple construction of parts in real time. In a blank write-once disk 20, the tracking servo is switched to an inoperative state, push-pull signals from outputs of the photodetector 12 are detected in a state of “in focus” and in a state of “out focus,” respectively, by a push-pull signal generation circuit 34, and the amplitudes of these push-pull signals are subjected to difference calculation in a spherical aberration error detector 31 to obtain a spherical aberration error signal A. Then, the spherical aberration is corrected with this spherical aberration error signal A, and subsequently a specific pattern signal is recorded in a trial writing area, this signal is reproduced in the state of “in focus” and in the state of “out focus,” respectively, the amplitude of each reproduced signal is acquired by a reproduced signal generation circuit 32, these amplitudes are subjected to difference calculation in the spherical aberration error detector 31 to obtain a spherical aberration error signal B. The spherical aberration is corrected with this.

摘要翻译： 一种方法和光盘装置，即使对于空白一次写入光盘也能够准确且稳定地校正球面像差，并且可以实时地以简单的部件构造来检测球面像差误差信号。 在空白的一次写入盘20中，跟踪伺服被切换到不工作状态，在“对焦”的状态下分别检测来自光检测器12的输出的推挽信号，处于“熄焦”的状态 通过推挽信号产生电路34，并且在球面像差误差检测器31中对这些推挽信号的幅度进行差分计算，以获得球面像差误差信号A.然后，用这种方法校正球面像差 球面像差误差信号A，随后的特定图案信号被记录在试写区域中，该信号分别以“对焦”的状态再现，并且在“对焦”的状态下再现，每个再现信号的幅度 由再现信号生成电路32获取，在球面像差误差检测器31中对这些振幅进行差分运算，得到球面像差误差信号B.球面像差为co 与此搭起来

公开(公告)号：US06687013B2

公开(公告)日：2004-02-03

申请号：US09818713

申请日：2001-03-28

申请人： Fumio Isshiki ,  Masakazu Sugaya ,  Tatsundo Suzuki ,  Masahiro Yamaoka ,  Sumio Hosaka

发明人： Fumio Isshiki ,  Masakazu Sugaya ,  Tatsundo Suzuki ,  Masahiro Yamaoka ,  Sumio Hosaka

IPC分类号： G01B1102

CPC分类号： G03F7/70775 ,  H01J37/3045 ,  H01J2237/20292

摘要： An absolute accuracy in the range from ±2 nm to ±1 nm for a displacement measurement value is provided by a laser interferometer displacement measuring system. A fluctuating error component that appears corresponding to the wave cycle of laser light is detected and subtracted from the measurement value while a stage is moving, thereby providing a high accuracy.

摘要翻译： 激光干涉仪位移测量系统提供了位移测量值在±2 nm至±1 nm范围内的绝对精度。 在阶段移动时，从测量值中检测出相应于激光波周期出现的波动误差分量，从而提供高精度。

公开(公告)号：US08004956B2

公开(公告)日：2011-08-23

申请号：US12053797

申请日：2008-03-24

申请人： Fumio Isshiki ,  Katsuhiko Izumi

发明人： Fumio Isshiki ,  Katsuhiko Izumi

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/1356 ,  G11B7/22 ,  G11B2007/0006 ,  G11B2007/0013

摘要： Provided are an optical pick up and an optical component used for the optical pickup which are capable of preventing or restraining occurrence of deviation and unbalance which are caused by assembly errors during manufacturing of optical components, a temperature variation or the like. The optical pickup comprises a laser, a polarization changeover element for changing over a direction of polarization of an optical beam emitted from the laser, a beam splitting element for splitting the laser beam into a plurality of optical paths in accordance with a direction of a polarization, a plurality of objective lenses for focusing laser beams onto a recording layer of the optical disc, a rise-up mirror, and a plurality of coupling lenses arranged respectively intermediate of the plurality of optical paths led to the plurality of objective lenses. The rise-up mirror is arranged intermediate of the plurality of optical paths led to the plurality of objective lenses and adapted to be used common to respective optical beams on the plurality of optical paths. The plurality of the coupling lenses are coupled to and held on one and the same drive portion.

摘要翻译： 提供了一种用于光学拾取器的光拾取器和光学部件，其能够防止或限制由光学部件制造期间的组装误差，温度变化等引起的偏差和不平衡的发生。 光拾取器包括激光器，用于切换从激光器发射的光束的偏振方向的偏振转换元件，用于根据偏振方向将激光束分成多个光路的分束元件 用于将激光束聚焦到光盘的记录层上的多个物镜，上升反射镜和分别设置在被引导到多个物镜的多个光路之间的多个耦合透镜。 上升反射镜被布置在被引导到多个物镜的多个光路中间，并且适用于多个光路上的相应光束共同使用。 多个耦合透镜联接并保持在同一个驱动部分上。

公开(公告)号：US07310290B2

公开(公告)日：2007-12-18

申请号：US10933947

申请日：2004-09-03

申请人： Yoshinori Ishikawa ,  Taku Hoshizawa ,  Fumio Isshiki

发明人： Yoshinori Ishikawa ,  Taku Hoshizawa ,  Fumio Isshiki

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0941

摘要： Even in an optical disk which includes, within a single disk, plural record areas whose track-pitches differ from each other, a tracking parameter is adjusted in a short time and with a high accuracy. At first, an optical pickup for reading information recorded in the optical disk is displaced into a reference track-pitch area which is one of the plural record areas of the optical disk. Moreover, the tracking gain is adjusted so that the tracking servo gain in this area may exhibit a predetermined characteristic. Also, the value thus acquired is recorded into, e.g., a non-volatile memory. After that, based on the tracking parameter learned/adjusted in the reference track-pitch area, the tracking parameter in another track-pitch area is calculated using the track-pitch ratio therebetween. Thereby it becomes possible to adjust the tracking parameter in a short time and with a high accuracy.

摘要翻译： 即使在单个盘中包括轨道间距彼此不同的多个记录区域的光盘中，也可以在短时间内以高精度调整跟踪参数。 首先，用于读取记录在光盘中的信息的光学拾取器被移动到作为光盘的多个记录区域之一的参考轨道间距区域中。 此外，调整跟踪增益，使得该区域中的跟踪伺服增益可以呈现预定特性。 此外，由此获得的值被记录到例如非易失性存储器中。 之后，基于在参考轨道间距区域中学习/调整的跟踪参数，使用它们之间的轨道间距比来计算另一轨道间距区域中的跟踪参数。 由此，可以在短时间内和高精度地调整跟踪参数。

公开(公告)号：US07307927B2

公开(公告)日：2007-12-11

申请号：US10879779

申请日：2004-06-30

申请人： Shinji Fujita ,  Fumio Isshiki ,  Nobuyuki Maeda

发明人： Shinji Fujita ,  Fumio Isshiki ,  Nobuyuki Maeda

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/13727

摘要： A method and an optical disk apparatus that can accurately and stably correct the spherical aberration even for a blank write-once optical disk and can detect a spherical aberration error signal with a simple construction of parts in real time. In a blank write-once disk 20, the tracking servo is switched to an inoperative state, push-pull signals from outputs of the photodetector 12 are detected in a state of “in focus” and in a state of “out focus,” respectively, by a push-pull signal generation circuit 34, and.the amplitudes of these push-pull signals are subjected to difference calculation in a spherical aberration error detector 31 to obtain a spherical aberration error signal A. Then, the spherical aberration is corrected with this spherical aberration error signal A, and subsequently a specific pattern signal is recorded in a trial writing area, this signal is reproduced in the state of “in focus” and in the state of “out focus,” respectively, the amplitude of each reproduced signal is acquired by a reproduced signal generation circuit 32, these amplitudes are subjected to difference calculation in the spherical aberration error detector 31 to obtain a spherical aberration error signal B. The spherical aberration is corrected with this.

摘要翻译： 一种方法和光盘装置，即使对于空白一次写入光盘也能够准确且稳定地校正球面像差，并且可以实时地以简单的部件构造来检测球面像差误差信号。 在空白的一次写入盘20中，跟踪伺服被切换到不工作状态，在“对焦”的状态下分别检测来自光检测器12的输出的推挽信号，处于“熄焦”的状态 通过推挽信号发生电路34，并且在球面像差误差检测器31中对这些推挽信号的振幅进行差分计算，以获得球面像差误差信号A.然后，用 该球面像差误差信号A以及随后的特定图案信号被记录在试写区域中，该信号分别以“对焦”的状态再现，并且在“对焦”的状态下分别再现 信号由再现信号生成电路32获取，这些幅度在球面像差误差检测器31中进行差分计算，以获得球面像差误差信号B.球面像差为 用此修正。

公开(公告)号：US07187643B2

公开(公告)日：2007-03-06

申请号：US10335896

申请日：2003-01-03

申请人： Fumio Isshiki ,  Tetsuya Nishida

发明人： Fumio Isshiki ,  Tetsuya Nishida

IPC分类号： G11B7/24

CPC分类号： G11B20/10 ,  G11B7/005 ,  G11B7/24088 ,  G11B20/1217 ,  G11B2020/1298

摘要： A high recording-density and highly reliable optical disc according to the two-dimensional PRML system is provided in which periodic signal fluctuations in the readout signal caused by an overall positional displacement of pits between adjacent tracks can be detected at each sampling clock timing and can be tracked and compensated. Two-dimensional inter-symbol interference is compensated during the production and recording of the pattern of the medium. The readout signal is compensated by a process of multi-value tracking before symbols are extracted from the signal.

摘要翻译： 提供了根据二维PRML系统的高记录密度和高可靠性光盘，其中可以在每个采样时钟定时检测由相邻轨道之间的凹坑的总位置偏移引起的读出信号中的周期信号波动，并且可以 被跟踪和补偿。 在制作和记录介质图案期间补偿二维符号间干扰。 在从信号提取符号之前，通过多值跟踪的处理来补偿读出信号。

公开(公告)号：US08305851B2

公开(公告)日：2012-11-06

申请号：US12956167

申请日：2010-11-30

申请人： Fumio Isshiki ,  Hideki Maruyama

发明人： Fumio Isshiki ,  Hideki Maruyama

IPC分类号： G11B7/00 ,  G11B20/10 ,  G11B20/18 ,  G11B5/55 ,  G11B27/36

CPC分类号： G11B7/094 ,  G11B7/0903 ,  G11B7/0945

摘要： An optical disk apparatus includes an optical pickup and a signal processor. The optical pickup includes an actuator for driving an objective lens, and a detected light intensity signal output part for outputting a detected light intensity signal to the processor. The signal processor includes a servo signal generator for generating a main push-pull signal and a sub push-pull signal on the basis of the detected light intensity signal supplied from the detected light intensity signal output part, a signal generator for generating a differential push-pull signal and a lens error signal by conducting addition/subtraction on the main push-pull signal and the sub push-pull signal, and a tracking offset correction signal generator which is input with the lens error signal to output a tracking offset correction signal. The differential push-pull signal correction is conducted by conducting addition/subtraction between the differential push-pull signal and the tracking offset correction signal.

摘要翻译： 光盘装置包括光拾取器和信号处理器。 光学拾取器包括用于驱动物镜的致动器和用于将检测到的光强度信号输出到处理器的检测光强信号输出部分。 信号处理器包括：伺服信号发生器，用于根据从检测到的光强度信号输出部分提供的检测到的光强度信号产生主推挽信号和副推挽信号;信号发生器，用于产生差分推挽信号 通过对主推挽信号和副推挽信号进行加减法，以及跟踪偏移校正信号发生器，其输入了透镜误差信号以输出跟踪偏移校正信号 。 差分推挽信号校正通过在差分推挽信号和跟踪偏移校正信号之间进行加/减来进行。