公开(公告)号：US20070165493A1

公开(公告)日：2007-07-19

申请号：US10596918

申请日：2005-01-05

申请人： Coen Verschuren ,  Willem Coene

发明人： Coen Verschuren ,  Willem Coene

IPC分类号： G11B11/00

CPC分类号： G11B7/1263 ,  G11B7/1267 ,  G11B11/1051 ,  G11B11/10515 ,  G11B11/10595 ,  G11B20/1426 ,  H03M5/145

摘要： The present invention relates to a method and apparatus for controlling at least one readout parameter of a magneto-optical domain expansion recording medium. An average detected runlength of the reading signal is monitored, and an error signal is generated on the basis of a comparison of the monitoring result with the predetermined average runlength that has been set during the encoding step. The at least one readout parameter is then controlled by means of the generated error signal. Furthermore, the present invention relates to a method, apparatus and record carrier wherein a runlength constraint is applied to at least one of the following quantities: mark regions and space regions in said storage layer, said runlength constraint being selected to keep an accumulated runlength deviation from a predetermined average runlength within a predetermined range. The proposed runlength property and control scheme provide the advantage that all detected runlengths contribute to the error signal to make the response must faster and to reduce readout errors.

摘要翻译： 本发明涉及用于控制磁光域扩展记录介质的至少一个读出参数的方法和装置。 监视读取信号的平均检测到的游程长度，并且基于监视结果与在编码步骤期间设置的预定平均游程长度的比较来生成错误信号。 然后通过产生的误差信号来控制至少一个读出参数。 此外，本发明涉及一种方法，装置和记录载体，其中运行长度约束应用于以下量中的至少一个：所述存储层中的标记区域和空间区域，所述游程长度约束被选择为保持累积的游程长度偏差 从预定范围内的预定平均游程长度。 所提出的运行长度属性和控制方案提供了所有检测到的运行长度有助于误差信号以使响应更快并且减少读出错误的优点。

公开(公告)号：US20070297301A1

公开(公告)日：2007-12-27

申请号：US11719958

申请日：2005-11-25

申请人： Coen Verschuren

发明人： Coen Verschuren

IPC分类号： G11B7/095

CPC分类号： G11B7/1387 ,  G11B7/082 ,  G11B7/0956 ,  G11B2007/13727

摘要： A method and device for controlling disc run out in an optical disc drive system. The drive has a rotatable axle (7) and holding means (6) for holding a disc (2, 136) so that the normal of the disc is essentially parallel to the axle. A tilt mechanism is arranged at the holding means for tilting the disc. A collection unit (10) is arranged at the optical disc drive for reading information from or writing information to the disc. A servo means (132) maintains the collection unit at a distance (133) from the disc. The servo means generates a control signal (134) provided to an actuator (130) for lenses in the collection unit. The control signal has a DC component and an AC component having a periodicity corresponding to the rotational speed of the disk and an amplitude related to the distance. The control signal is fed to the tilt mechanism. The tilt mechanism is adjusted in an X-direction and a Y-direction for minimizing the amplitude of the control signal.

摘要翻译： 一种用于控制盘在光盘驱动系统中耗尽的方法和装置。 驱动器具有可旋转轴（7）和用于保持盘（2,136）的保持装置（6），使得盘的法线基本上平行于轴。 在用于倾斜盘的保持装置处布置有倾斜机构。 收集单元（10）设置在光盘驱动器处，用于从盘读取信息或向盘写入信息。 伺服装置（132）将收集单元保持在离盘的距离（133）处。 伺服装置产生用于收集单元中的透镜的致动器（130）的控制信号（134）。 控制信号具有DC分量和具有与盘旋转速度对应的周期的AC分量和与距离相关的振幅。 控制信号被馈送到倾斜机构。 倾斜机构在X方向和Y方向上进行调节，以使控制信号的振幅最小化。

公开(公告)号：US20050162986A1

公开(公告)日：2005-07-28

申请号：US10504134

申请日：2003-01-24

申请人： Coen Verschuren

发明人： Coen Verschuren

IPC分类号： G11B5/02 ,  G11B11/105 ,  G11B20/18 ,  G11B11/00

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 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 can 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： 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并借助于外部磁场的情况下，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致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。 因此可以对任何大小的复制窗口修正相位误差。 复制窗口中的微小更改也可以被检测和更正。

公开(公告)号：US20050146991A1

公开(公告)日：2005-07-07

申请号：US10504135

申请日：2003-01-24

申请人： Coen Verschuren

发明人： Coen Verschuren

IPC分类号： G11B5/02 ,  G11B11/105 ,  G11B20/00 ,  G11B11/00

CPC分类号： G11B11/10515

摘要： The present invention relates to a method and an apparatus for reading a domain expansion magneto-optical recording medium. A switching time of an external magnetic field is derived from a reading pulse obtained and the switching period of the external magnetic field is set to a value larger than the channel bit length of a storage layer. Higher data rates are thus allowed due to the fact that the bandwidth requirements of the coils and driver circuits are lowered.

摘要翻译： 本发明涉及一种用于读取域扩展磁光记录介质的方法和装置。 从获得的读取脉冲导出外部磁场的切换时间，将外部磁场的切换期间设定为大于存储层的通道位长度的值。 由于线圈和驱动电路的带宽要求降低，因此允许更高的数据速率。

公开(公告)号：US20070223613A1

公开(公告)日：2007-09-27

申请号：US11568725

申请日：2005-05-09

申请人： Coen Verschuren ,  Alexander Padiy

发明人： Coen Verschuren ,  Alexander Padiy

IPC分类号： H03M13/00

CPC分类号： H03M13/41 ,  G11B20/1816 ,  H03M13/3738

摘要： A system for generating a quality indicator for a trellis decoded signal based on the path metrics of the decoding is presented. An apparatus comprises a path metric processor (105) which determines path metric differences between two path metrics entering a state of a trellis decoder 103. A measured distribution processor (107) orders the path difference metrics to generate a measured distribution. An analysis distribution processor (109) fits a distribution being the sum of a first and second distribution path to the measured distribution. A quality indicator processor (111) determines a quality indicator in response to the fitted distribution. In particular, the first distribution may be associated with correct sign path metric differences and the second distribution may be associated with incorrect sign path metric differences. The quality indicator processor (111) preferably determines the quality indicator in response to only the first distribution thereby reducing the degradation caused by the incorrect sign path metric differences.

摘要翻译： 提出了一种用于基于解码的路径度量来产生网格解码信号的质量指示符的系统。 一种装置包括路径度量处理器（105），其确定进入网格解码器103的状态的两个路径度量之间的路径度量差异。 测量分配处理器（107）命令路径差值度量以产生测量分布。 分析分配处理器（109）适合作为第一和第二分配路径之和的分布与测量分布。 质量指示处理器（111）响应于拟合分布确定质量指示符。 特别地，第一分布可以与正确的符号路径度量差异相关联，并且第二分布可以与不正确的符号路径度量差异相关联。 质量指示处理器（111）优选地仅响应于第一分布来确定质量指示符，从而减少由不正确的符号路径度量差引起的劣化。

公开(公告)号：US20070014197A1

公开(公告)日：2007-01-18

申请号：US10570541

申请日：2004-08-26

申请人： Coen Verschuren

发明人： Coen Verschuren

IPC分类号： G11B11/00

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10595 ,  G11B20/10009

摘要： The present invention relates to a reading method and apparatus for reading a magneto-optical recording medium comprising at least one storage layer and a read-out layer, wherein an expanded domain leading to a read-out pulse is generated in the read-out layer by copying of a mark region from the at least one storage layer to the read-out layer through heating by a radiation power and with the help of an external magnetic field. A parameter indicating the presence or strength of a local deviation in the read-out characteristic of the recording medium is determined during a reading operation, and the radiation power is then controlled on the basis of on the determined parameter. The proposed procedure can be used during a read-out operation based on a reflected power, read-out error, or phase error. Hence, a fast and efficient power control mechanism that can be independent of a copy window control mechanism is provided. Moreover, crosstalk between first and second storage layers can be prevented by keeping the read-out temperature close to the compensation temperature of the other storage layer which is not read.

摘要翻译： 本发明涉及一种用于读取包括至少一个存储层和读出层的磁光记录介质的读取方法和装置，其中在读出层中产生导致读出脉冲的扩展域 通过利用辐射功率加热和借助于外部磁场将标记区域从至少一个存储层复制到读出层。 在读取操作期间确定指示记录介质的读出特性中局部偏差的存在或强度的参数，然后基于所确定的参数来控制辐射功率。 可以在基于反射功率，读出误差或相位误差的读出操作期间使用所提出的程序。 因此，提供了可以独立于复印窗口控制机构的快速且有效的功率控制机构。 此外，可以通过将读出温度保持在与未读取的另一个存储层的补偿温度接近的方式来防止第一和第二存储层之间的串扰。

公开(公告)号：US20050281177A1

公开(公告)日：2005-12-22

申请号：US10529730

申请日：2003-09-12

申请人： Coen Verschuren ,  Bob Van Someren

发明人： Coen Verschuren ,  Bob Van Someren

IPC分类号： G11B7/007 ,  G11B7/24079 ,  G11B7/24

CPC分类号： G11B7/00718 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/24079 ,  G11B11/10515 ,  G11B11/10576 ,  G11B11/10578 ,  G11B11/10584

摘要： The invention relates to a MO-ROM medium with a small track width, wherein data is recorded at least on one side of a disk wherein a data side has on a substrate at least a recording layer wherein said data is recorded and at least a read-out layer to reproduce said data recorded in said recording layer during read-out. Recorded data is arranged within adjacent data tracks on said disk and a recording density within a data track is beyond the diffraction limited density of the focussing optics. By arrangement of the data tracks in groups of several adjacent data tracks wherein a track width within a data track group is at least less than the diffraction limit of the focussing optics and providing reference means for tracking a selected data track group with said read-out laser beam a specific data track of each data track group can be read-out by adjusting a proper offset value within the radial tracking unit.

摘要翻译： 本发明涉及具有小轨道宽度的MO-ROM介质，其中至少在盘的一侧记录数据，其中数据侧在基板上至少记录有记录数据的记录层，并且至少读取 输出层，用于在读出期间再现记录在所述记录层中的所述数据。 记录的数据被布置在所述盘上的相邻数据轨道内，并且数据轨道内的记录密度超过聚焦光学器件的衍射受限密度。 通过以数个相邻数据磁道的组的数据磁道的排列，其中数据磁道组内的磁道宽度至少小于聚焦光学器件的衍射极限，并提供用于使用所述读出跟踪所选数据磁道组的参考装置 可以通过调整径向跟踪单元内的适当偏移值来读取每个数据轨道组的特定数据轨道的激光束。

公开(公告)号：US20080098414A1

公开(公告)日：2008-04-24

申请号：US11574915

申请日：2005-09-08

申请人： Coen Verschuren

发明人： Coen Verschuren

IPC分类号： G11B17/03

CPC分类号： G11B33/121 ,  G11B17/0282 ,  G11B19/2009

摘要： A set of images (IM 1 a, IM2a, IMFa) that have successively been captured comprises a plurality of images (IM 1 a, IM2a) that have been captured under substantially similar light conditions, and an image (IMFa) that has been captured under substantially different light conditions (FLSH). For example, two images may be captured with ambient light and one with flashlight. A motion indication (MV) is derived (ST6) from at least two images (IM Ia, IM2a) that have been captured under substantially similar light conditions. The image (IMFa) that has been captured under substantially different light conditions is processed (ST7, ST8) on the basis of the motion indication (MV) derived from the at least two images (IM1 a, IM2a) that have been captured under substantially similar light conditions.

摘要翻译： 已经连续拍摄的一组图像（IM1a，IM2a，IMFa）包括在基本相似的光条件下捕获的多个图像（IM1a，IM2a）和已经被捕获的图像（IMFa） 在基本不同的光条件（FLSH）下。 例如，可以用环境光捕获两个图像，一个用手电筒捕获。 从基本相似的光条件下捕获的至少两个图像（IM 1a，IM2a）导出运动指示（MV）（ST6）。 基于在基本上被捕获的至少两个图像（IM1a，IM2a）导出的运动指示（MV）来处理在基本上不同的光条件下捕获的图像（IMFa）（ST7，ST8） 类似的光线条件。

公开(公告)号：US20070157218A1

公开(公告)日：2007-07-05

申请号：US10597970

申请日：2005-02-04

申请人： Coen Verschuren ,  Martinus Van Der Mark ,  Nicolaas Lambert

发明人： Coen Verschuren ,  Martinus Van Der Mark ,  Nicolaas Lambert

IPC分类号： G11B17/04

CPC分类号： G11B17/056 ,  G11B25/043

摘要： A disk drive comprises a turning mechanism (3 to 8) adapted to provide a pulse to the side of the disk (D) resting on a tray (2) in a position outside the center so as to provide an upward and rotating movement to the disk in order to turn it over. The turning mechanism may include a pulse member (3) acting directly on the disk. In an embodiment, the turning mechanism is pneumatic, the pulse member being a nozzle adapted to direct a pressurized gas pulse at the disk. Tests have shown that exerting an eccentric pulse on the disk results in flipping the disk over reliably and quickly.

摘要翻译： 磁盘驱动器包括转动机构（3至8），该转动机构（3至8）适于在位于中心外部位置的盘（2）上的盘（D）侧提供脉冲，从而向 磁盘以便将其翻转。 转动机构可以包括直接作用在盘上的脉冲构件（3）。 在一个实施例中，转动机构是气动的，脉冲构件是适于将加压气体脉冲引导到盘的喷嘴。 测试表明，在盘上施加偏心脉冲导致盘可靠且快速地翻转。

公开(公告)号：US20060072377A1

公开(公告)日：2006-04-06

申请号：US10534472

申请日：2003-10-21

申请人： Coen Verschuren ,  Ferry Zijp

发明人： Coen Verschuren ,  Ferry Zijp

IPC分类号： G11B11/00

CPC分类号： G11B11/10515 ,  G11B11/10528 ,  G11B11/10582 ,  G11B11/10584

摘要： The present invention relates to a domain expansion storage medium and manufacturing method with improved readout performance. The substrate of the storage medium and/or its storage layer is processed to define a predetermined shape of magnetic domains, adapted to the front of the thermal reading profile. In particular, reversed crescent shaped domains flipped in the track directions are defined. This allows improved resolution and jitter values.

摘要翻译： 本发明涉及具有改善的读出性能的域扩展存储介质和制造方法。 处理存储介质和/或其存储层的衬底以限定适于热读取轮廓前部的预定形状的磁畴。 特别地，定义了在轨道方向上翻转的反转的新月形区域。 这样可以提高分辨率和抖动值。