公开(公告)号：US20170206927A1

公开(公告)日：2017-07-20

申请号：US15475665

申请日：2017-03-31

申请人： Seagate Technology LLC

发明人： Wenzhong Zhu ,  Kaizhong Gao ,  Tim Rausch ,  Edward Charles Gage

IPC分类号： G11B20/18 ,  G11B5/09 ,  G11B20/12 ,  G11B5/012

CPC分类号： G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

摘要： A storage device includes a storage medium having a plurality of data tracks. At least one data track of the plurality of data tracks includes a number of super parity sectors. The number of super parity sectors selected for the at least one data tracks is selected based on a distance between an inner diameter of the storage medium and the data track. The number of super parity sectors provides error correction code for the at least one data track.

公开(公告)号：US20080259743A1

公开(公告)日：2008-10-23

申请号：US12041382

申请日：2008-03-03

申请人： COEN ADRIANUS VERSCHUREN

发明人： COEN ADRIANUS VERSCHUREN

IPC分类号： G11B11/00 ,  G11B11/105 ,  G11B20/18

CPC分类号： G11B11/10515 ,  G11B11/10595 ,  G11B20/182

摘要： The present invention relates to a method, apparatus and record carrier for controlling read-out and/or synchronization between an external magnetic field and written data during a reading operation from a magneto-optical recording medium comprising a storage layer and a read-out layer. An expanded domain leading to a pulse in a reading signal is generated in said read-out layer by copying a mark region from said storage layer to said read-out layer upon heating by a radiation power and with the help of the external magnetic field. The waveform of the reading signal is analyzed, and the analyzing result is used for correcting a phase deviation and/or for controlling a copy window size of the mark copying. Thereby, phase errors can be corrected for any size of the copy window. Even small changes in the copy window can be detected and corrected.

摘要翻译： 本发明涉及一种在包括存储层和读出层的磁光记录介质的读取操作期间控制外部磁场和写入数据之间的读出和/或同步的方法，装置和记录载体 。 通过在辐射功率加热和外部磁场的帮助下，通过将标记区域从所述存储层复制到所述读出层，在所述读出层中产生导通读取信号中的脉冲的扩展域。 分析读取信号的波形，分析结果用于校正相位偏差和/或用于控制标记复印的复印窗口尺寸。 因此，可以针对复制窗口的任何大小校正相位误差。 复制窗口中的微小更改也可以被检测和更正。

公开(公告)号：US07420910B2

公开(公告)日：2008-09-02

申请号：US11526392

申请日：2006-09-25

申请人： Kazutomo Miyata ,  Teruyuki Ota ,  Makoto Watanabe ,  Yoshihito Fukushima

发明人： Kazutomo Miyata ,  Teruyuki Ota ,  Makoto Watanabe ,  Yoshihito Fukushima

IPC分类号： G11B7/24

CPC分类号： G11B11/10578 ,  G11B7/24079 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10597

摘要： An optical recording and reproducing method is able to record and reproduce information by using an optical system using recording and reproducing light with a wavelength selected in a range of from 780 nm±10 nm and an objective lens with a numerical aperture NA selected in a range of from 0.45±0.01 and records and reproduces first and second optical recording mediums having different recording capacities. The first optical recording medium is constructed by using a substrate with a track pitch Tp1 being selected in a range of from 1.5 μm to 1.7 μm and a groove depth d1 being selected in a range of from 70 nm to 90 nm, and the second optical recording medium is constructed by using a substrate 11 with a track pitch Tp2 being selected in a range of from 1.2 μm to 1.3 μm and a groove depth d2 of the groove 12 being selected in a range of from 150 nm to 180 nm. This, the optical recording medium has compatibility with existing optical discs and has a recording density high enough to record a moving picture.

摘要翻译： 光学记录和再现方法能够通过使用使用在780nm±10nm范围内选择的波长的记录和再现光的光学系统来记录和再现信息，并且在范围内选择数值孔径NA的物镜 从0.45±0.01开始记录和再现具有不同记录容量的第一和第二光记录介质。 第一光记录介质通过使用在1.5μm至1.7μm的范围内选择的轨道间距T p 1> 1的衬底和凹槽深度d 1 1 < 选择在70nm至90nm的范围内，并且第二光学记录介质通过使用在1.2μm至1.3μm的范围内选择的轨道间距T p 2 <2>的基板11来构造 并且沟槽12的凹槽深度d 2 2 在150nm至180nm的范围内选择。 这样，光学记录介质与现有的光盘具有兼容性并且具有足够高的记录密度来记录运动图像。

公开(公告)号：US07420887B2

公开(公告)日：2008-09-02

申请号：US10956618

申请日：2004-10-01

申请人： Shinya Kobayashi ,  Masaaki Iwasaki

发明人： Shinya Kobayashi ,  Masaaki Iwasaki

IPC分类号： G11B11/00

CPC分类号： G11B19/04 ,  G11B11/10515 ,  G11B11/10595

摘要： If regeneration is not performed normally when data is regenerated from a medium, a read retry processing unit changes the intensities of the laser beam and of the regeneration magnetic field respectively to prearranged stages to perform the regeneration again. A regeneration condition change unit remembers the regeneration sector number for one read command from the higher order. When retry occurs, the regeneration condition change unit counts the number of the sectors for each stage which can be regenerated at each stage, and by providing a coefficient for each stage in advance, changes the default regeneration condition using the sum of products of the coefficients and the number of the counted regenerable sectors.

摘要翻译： 如果在从介质再生数据时再生不正常，读取重试处理单元将激光束和再生磁场的强度分别改变到预定级，以再次进行再生。 再生条件改变单元从更高级别记录一个读取命令的再生扇区号。 当重试发生时，再生条件改变单元对每个阶段可以再生的每个级的扇区数进行计数，并且通过预先为每个级提供系数，使用系数的乘积之和来改变默认再生条件 以及计数可再生扇区的数量。

公开(公告)号：US07352659B2

公开(公告)日：2008-04-01

申请号：US10504134

申请日：2003-01-24

申请人： Coen Adrianus Verschuren

发明人： Coen Adrianus Verschuren

IPC分类号： G11B11/00

CPC分类号： G11B11/10515 ,  G11B11/10595 ,  G11B20/182

摘要： A method and apparatus for controlling read-out and/or synchronization between an external magnetic field and written data during a reading operation from a magneto-optical recording medium includes generating a pulse in a reading signal in a read-out layer by copying a mark region from a storage layer to the read-out layer upon heating by a radiation power and with the aid of the external magnetic field. The waveform of the reading signal is analyzed, and the analysis result is used for correcting a phase deviation and/or for controlling a copy window size of the mark copying. Phase errors may thus be corrected for any size of the copy window. Even small changes in the copy window can be detected and corrected.

摘要翻译： 一种用于在从磁光记录介质读取操作期间控制外部磁场和写入数据之间的读出和/或同步的方法和装置包括通过复制标记在读出层中产生读取信号中的脉冲 区域，通过辐射功率加热并借助外部磁场从存储层到读出层。 分析读取信号的波形，分析结果用于校正相位偏差和/或用于控制标记复印的复印窗口尺寸。 因此，可以针对复制窗口的任意大小校正相位误差。 复制窗口中的微小更改也可以被检测和更正。

公开(公告)号：US07242651B2

公开(公告)日：2007-07-10

申请号：US10432638

申请日：2001-12-10

申请人： Kenji Asano ,  Hideaki Yano ,  Koichi Tada

发明人： Kenji Asano ,  Hideaki Yano ,  Koichi Tada

IPC分类号： G11B7/05 ,  G11B11/10

CPC分类号： G11B20/10222 ,  G11B7/005 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0945 ,  G11B11/10515 ,  G11B20/10009 ,  G11B20/10481 ,  G11B20/1816 ,  G11B27/10 ,  G11B2020/1287 ,  G11B2220/2562

摘要： The invention provides a disk playback device wherein a disk (1) is irradiated with a laser beam from an optical head (4) to reproduce signals from the disk, and which comprises an external synchronizing signal producing circuit (8) and a delay circuit (12) for producing a reproduction synchronizing signal providing reference timing at which a reproduced signal is detected by reading an output signal from the optical head (4), a circuit (7) for detecting the reproduced signal by reading the output signal from the optical head (4) based on the reproduction synchronizing signal, and a system controller (10) for determining an optimum phase for a normal reproduction operation by altering the phase of the reproduction synchronizing signal and executing a reproduction operation, the controller (10) being operable to make a phase adjustment for the reproduction synchronizing signal prepared by the delay circuit (12). A normal reproduction operation can be performed at all times by assuring the reproduction synchronizing signal of the optimum phase.

摘要翻译： 本发明提供了一种光盘播放装置，其中光盘（1）被来自光头（4）的激光束照射以再现来自盘的信号，并且包括外部同步信号产生电路（8）和延迟电路 12），用于产生再现同步信号，通过读取来自光头（4）的输出信号，提供检测再现信号的参考定时;电路（7），用于通过从光头读出输出信号来检测再现信号 （4），以及系统控制器（10），用于通过改变再现同步信号的相位并执行再现操作来确定用于正常再现操作的最佳相位，所述控制器（10）可操作为 对由延迟电路（12）准备的再现同步信号进行相位调整。 通过确保最佳相位的再现同步信号，可以始终执行正常再现操作。

公开(公告)号：US07210155B2

公开(公告)日：2007-04-24

申请号：US10886673

申请日：2004-07-09

申请人： Toshimori Miyakoshi

发明人： Toshimori Miyakoshi

IPC分类号： G11B23/03 ,  G11B7/24 ,  G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10591

摘要： A high-density magneto-optical recording medium having excellent jitter properties is provided. A pattern-dependent shift of the length of a recorded mark does not occur even when a minute mark has increased sensitivity to a recording magnetic field. A magneto-optical recording medium has at least a displacement layer, a memory layer, and an auxiliary memory layer. A mark with a length up to the diffraction-limit of the optical system is recorded and read out. The magneto-optical recording medium includes an in-plane magnetization-inducing layer principally made of cobalt on the auxiliary memory layer.

摘要翻译： 提供了具有优异的抖动特性的高密度磁光记录介质。 即使当分钟标记对记录磁场的敏感度增加时，也不会发生记录标记的长度的模式相关移位。 磁光记录介质至少具有位移层，存储层和辅助存储层。 记录并读出长度达到光学系统的衍射极限的标记。 磁光记录介质包括在辅助存储层上主要由钴制成的面内磁化诱导层。

公开(公告)号：US07133330B2

公开(公告)日：2006-11-07

申请号：US11105846

申请日：2005-04-14

申请人： Yoshiyuki Nanba

发明人： Yoshiyuki Nanba

IPC分类号： G11B11/00

CPC分类号： G11B11/10526 ,  G11B11/10515 ,  G11B11/10523 ,  G11B11/10582 ,  G11B11/10584 ,  G11B11/10597

摘要： A magnetooptic recording medium has at least a recording layer for recording data and a reproducing layer for reproducing the data recorded in the recording layer onto a substrate and reproduces the data by setting a proper reproducing laser power upon reproduction. According to the magnetooptic recording medium, magnetizing directions of a buffer area, a sector address area, and a gap area which are sandwiched between data areas in which the data is recorded are uniformly magnetized in the recording direction.

摘要翻译： 磁光记录介质至少具有用于记录数据的记录层和用于将记录在记录层中的数据再现到基板上的再现层，并且通过在再现时设置适当的再现激光功率来再现数据。 根据磁光记录介质，在记录数据的数据区域之间的缓冲区域，扇区地址区域和间隙区域的磁化方向在记录方向上均匀地磁化。

公开(公告)号：US07126884B2

公开(公告)日：2006-10-24

申请号：US10337354

申请日：2003-01-07

申请人： Masahiro Tabata

发明人： Masahiro Tabata

IPC分类号： G11B11/00

CPC分类号： G11B11/10586 ,  G11B11/10515 ,  G11B11/10584

摘要： In a magneto-optical recording medium, a first magnetic layer is made of a material using a Gd—Fe film or a Gd—Fe—Co film as a base so that a magnetic field normalized based on saturation magnetization of a magnetic domain wall driving field can be smaller than 1. A second magnetic layer is made of a material using a Tb—Fe film or a Dy—Fe film as a base, to which a nonmagnetic element such as Al or Cr, and Co are added. A third magnetic layer is made of a material using a Tb—Fe—Co film or a Dy—Fe—Co film as a base, and an element concentration ratio (at. % ratio) of Tb or Dy to Fe—Co is set in a range of 24.5≦Tb≦26.5 or 26.5≦Dy≦29.5. Addition amounts of Co and a nonmagnetic element to each magnetic layer are adjusted to set Curie temperatures Tc11, Tc12, and Tc13 of the first, second and third magnetic layers to Tc13>Tc11>Tc12.

摘要翻译： 在磁光记录介质中，第一磁性层由使用Gd-Fe膜或Gd-Fe-Co膜作为基底的材料制成，使得基于磁畴壁驱动的饱和磁化而归一化的磁场 场可以小于1.第二磁性层由使用Tb-Fe膜或Dy-Fe膜作为基底的材料制成，添加诸如Al或Cr的非磁性元素和Co。 第三磁性层由使用Tb-Fe-Co膜或Dy-Fe-Co膜作为基材的材料制成，并且设定Tb或Dy与Fe-Co的元素浓度比（at。％比） 在24.5 <= Tb <= 26.5或26.5 <= Dy <= 29.5的范围内。 调整各磁性层的Co和非磁性元素的添加量，使第一，第二，第三磁性层的居里温度Tc11，Tc12，Tc13为Tc13> Tc11> Tc12。

公开(公告)号：US07106678B2

公开(公告)日：2006-09-12

申请号：US10466328

申请日：2002-01-28

申请人： Hideaki Yano ,  Kenji Asano ,  Hideharu Baba

发明人： Hideaki Yano ,  Kenji Asano ,  Hideharu Baba

IPC分类号： G11B7/00

CPC分类号： G11B11/10595 ,  G11B7/005 ,  G11B7/126 ,  G11B7/1267 ,  G11B11/10515

摘要： The present invention provides a disk playback device comprising a laser drive circuit 15 for feeding a drive signal to an optical head 4 and adjusting the power of a laser beam irradiated by the optical head 4, an error correcting circuit 11 for detecting an error rate of a reproduced signal, and a system controller 10 for controlling operation of the laser drive circuit for signal reproduction and signal recording based on the output of the error correction circuit 11. The system controller 10 retrieves one limit value of two limit values of a reproduction power wherein the error rate is not beyond a prescribed value, and calculates an optimum reproduction power based on the one limit value retrieved. Accordingly it is possible to move to signal reproduction in a short period of time and to reproduce signals with high accuracy by setting the optimum reproduction power.

摘要翻译： 本发明提供了一种盘回放装置，包括：激光驱动电路15，用于将驱动信号馈送到光头4并调节由光头4照射的激光束的功率;纠错电路11，用于检测光头4的错误率 再现信号，以及系统控制器10，用于基于误差校正电路11的输出来控制用于信号再现和信号记录的激光驱动电路的操作。 系统控制器10检索错误率不超过规定值的再现功率的两个极限值的一个限制值，并且基于检索到的一个限制值来计算最佳再现功率。 因此，可以在短时间内移动到信号再现，并且通过设置最佳再现功率来高精度地再现信号。