公开(公告)号：US20100085849A1

公开(公告)日：2010-04-08

申请号：US12444700

申请日：2007-10-04

申请人： Bin Yin ,  Ruud Vlutters ,  Willem Marie Julia Marcel Coene ,  Theodorus Petrus Henricus Gerardus Jansen

发明人： Bin Yin ,  Ruud Vlutters ,  Willem Marie Julia Marcel Coene ,  Theodorus Petrus Henricus Gerardus Jansen

IPC分类号： G11B20/00

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B2220/2537 ,  G11B2220/2541

摘要： The present invention discloses an optical drive and a method for preprocessing a disc readout signal rk of an optical drive on the basis of a set of low-pass filters. The cutoff frequency fC of the filters wk, more particularly, can be set within the optical bandwidth, which improves the Viterbi detection performance in the case of high speed drive operations. Three types of filters are described, in which a Type I shaping filter performs best given a limited hardware cost for the bit detector. Compared to other more advanced noise-whitening techniques, it is only speed dependent and requires little prior knowledge of the channel and noise, thus cheap and easy to design. The invention can be applied in connection with optical disc drives, in particular when high frequency noises are dominant, for example, in the case of high speed operations.

摘要翻译： 本发明公开了一种基于一组低通滤波器对光盘驱动器的盘读出信号rk进行预处理的光驱动器和方法。 滤波器wk的截止频率fC更具体地可以设置在光学带宽内，这提高了在高速驱动操作的情况下的维特比检测性能。 描述了三种类型的滤波器，其中在给定位检测器的有限硬件成本的情况下，I型整形滤波器性能最佳。 与其他更先进的噪声增白技术相比，它只是速度依赖性，并且对通道和噪声几乎没有先前的了解，因此便宜且易于设计。 本发明可以与光盘驱动器结合使用，特别是当高频噪声占主导地位时，例如在高速操作的情况下。

公开(公告)号：US07885152B2

公开(公告)日：2011-02-08

申请号：US11993896

申请日：2006-06-27

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0943 ,  G11B2007/0013

摘要： A tracking error (TE) signal is formed from a single spot on a photodetector 25 to improve the robustness in optical disc applications having a reduced track-pitch. Reduced track pitches are employed in high data capacity optical disc formats. By using high frequency cross-correlation of a central aperture signal, the differences within the left 21 and right 23 detector halves yield a divergence from the zero crossing that produces a more pronounced tracking signal. The more pronounced tracking signal is insensitive to incoherent cross talk in multi-layer discs.

摘要翻译： 从光电检测器25上的单个点形成跟踪误差（TE）信号，以改善具有减小的轨道间距的光盘应用的鲁棒性。 在高数据容量的光盘格式中采用减少轨道间距。 通过使用中心孔径信号的高频互相关，左侧21和右侧23个检测器之间的差异部分产生了从过零点产生更明显的跟踪信号的偏差。 更明显的跟踪信号对多层光盘中的非相干串扰不敏感。

公开(公告)号：US20100027397A1

公开(公告)日：2010-02-04

申请号：US11722383

申请日：2005-12-07

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B20/18

CPC分类号： G11B7/0943 ,  G11B7/0903

摘要： The present invention provides a method and apparatus for robust tracking at narrow track-pitches on optical discs, enabling higher densities on Blu-ray Discs (5) as well as near-field discs. Increasing radial density results in loss of radial diffraction within the numerical aperture of the lens. Due to this loss in diffraction, current tracking methods, such as Push-Pull and Differential Phase Detection (DPD), will stop working. The invention provides a method and apparatus that relies on cross-correlating the central aperture (CA) signals of 3 optical spots (22, 24, 26) that are positioned such that there are a central spot (24) and spots (22, 26) positioned to the left (22) and right (26) of the central spot (4). By using CA signals, the tangential diffraction is used, which is hardly affected by a track-pitch reduction.

摘要翻译： 本发明提供一种用于在光盘上的窄轨道间距进行鲁棒跟踪的方法和装置，能够在蓝光光盘（5）以及近场光盘上实现更高的密度。 增加径向密度导致透镜数值孔径内的径向衍射损失。 由于这种衍射损失，诸如推挽和差分相位检测（DPD）之类的电流跟踪方法将停止工作。 本发明提供了一种依赖于将3个光点（22,24,26）的中心孔径（CA）信号交叉相关的方法和装置，其被定位成使得存在中心斑点（24）和斑点（22,26） ）位于中心点（4）的左侧（22）和右侧（26）。 通过使用CA信号，使用切向衍射，其几乎不受轨道间距减小的影响。

公开(公告)号：US20080205208A1

公开(公告)日：2008-08-28

申请号：US11916296

申请日：2006-06-02

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B7/00

CPC分类号： G11B7/0903

摘要： The present invention relates to optical system capable of reproducing information from an optical carrier by a main beam (C) for reading information as readable effects on the carrier, and a first (A) and a second (B) auxiliary beam. The optical system is adapted to direct the main beam (C) and the first (A) and second (B) auxiliary beam onto the carrier so that the main beam is positioned on a first track, and the first and second auxiliary beam are oppositely positioned on a second and a third track. The optical system can adjust a push pull (PP) radial error signal from the main beam by a function; ƒ=ƒ(A, B, C), where the function ƒ is dependent upon adjacently positioned readable effects in the first, second and third track i.e. the local optical environment of the main beam. Therefore a filtering or “cleaning” of the push pull signal is performed depending on the local optical environment of the main beam.

摘要翻译： 本发明涉及能够通过主波束（C）从光载波再现信息的光学系统，用于读取作为对载体的可读效果的信息，以及第一（A）和第二（B）辅助波束。 光学系统适于将主光束（C）和第一（A）和第二（B）辅助光束引导到载体上，使得主光束位于第一光道上，并且第一和第二辅助光束相反 位于第二和第三轨道上。 光学系统可以通过功能调整来自主光束的推挽（PP）径向误差信号; f = f（A，B，C），其中函数f取决于第一，第二和第三轨道中相邻定位的可读效果，即主波束的局部光学环境。 因此，根据主光束的局部光学环境来执行推挽信号的滤波或“清洁”。

公开(公告)号：US07218603B2

公开(公告)日：2007-05-15

申请号：US10515683

申请日：2003-05-14

申请人： Pierre Hermanus Woerlee ,  Wilhelmus Robert Koppers ,  Ruud Vlutters ,  Bin Yin ,  Ronald Reindert Drenten

发明人： Pierre Hermanus Woerlee ,  Wilhelmus Robert Koppers ,  Ruud Vlutters ,  Bin Yin ,  Ronald Reindert Drenten

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B7/00557 ,  G11B7/00736

摘要： A multi-stack optical data storage medium (20) for rewritable recording using a focused radiation beam (30), entering through an entrance face (25) is described. The medium (20) has a substrate (1a, 1b) and an L0 recording stack (2) and an L1 recording stack (3) both comprising a phase-change type L0 and L1 recording layer and the recording stacks are separated by a transparent spacer layer (4). The L0 recording stack (2) is present at a position closest to the entrance face (25) and has an optical transmission of TL0a and TL0c when the phase-change layer respectively is in the amorphous phase and in the crystalline phase. The medium (20) contains pre-recorded information modulated in at least one of: an embossed pregroove (21) in the substrate (1a, 1b), embossed pits in the substrate and recorded phase-change marks in at least one of the recording layers L0 and L1 (6, 11). The pre-recorded information contains a flag whether formatting of the L0 recording layer of the L0 recording stack (2) is needed depending on the transmission values TL0a and TL0c of the L0 recording stack (2). In this way it is achieved that the medium (20) has a good playability, recordability and random access behavior even when the L0 recording layer (2) has been partially recorded with information.

摘要翻译： 描述了使用聚焦辐射束（30）通过入射面（25）进入的可重写记录的多层光学数据存储介质（20）。 介质（20）具有包括相变型L 0和L 1记录层的基板（1a，1b）和L0记录叠层（2）和L 1记录叠层（3），并且记录 堆叠由透明间隔层（4）分开。 L 0记录堆叠（2）存在于最接近入射面（25）的位置，并且当相变层分别处于非晶相中并具有TL 0 a和TL 0 c的光透射时 相。 介质（20）包含在以下至少一个中的至少一个调制的预先记录的信息：衬底（1a，1b）中的压纹预制凹槽（21），衬底中的压花凹坑和记录的相变标记中的至少一个 记录层L 0和L 1（6,11）。 预先记录的信息包含根据L 0记录堆叠（2）的发送值TL 0 a和TL 0 c是否需要格式化L 0记录堆栈（2）的L 0记录层的标志。 以这种方式，实现即使L 0记录层（2）已经被部分地记录信息，介质（20）也具有良好的可播放性，可记录性和随机访问行为。

公开(公告)号：US20090097368A1

公开(公告)日：2009-04-16

申请号：US12282565

申请日：2007-03-05

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B20/00 ,  G11B7/12 ,  G11B20/10

CPC分类号： G11B7/0062 ,  G11B7/1263 ,  G11B11/10595

摘要： The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train (80) for writing an optically detectable effect (90) i.e. a pit or mark. Photo detection means (10) detects a first reflected radiation beam pulse (R1) from a start time portion of the write pulse train (80) and generates a corresponding first signal (PS1) indicative of the power in the first pulse, the photo detection means (10) further detects a second reflected radiation pulse (R2) from an end time portion of the write pulse train (80) and generates a corresponding second signal (PS2) indicative of the power in the second pulse. By comparing (e.g. the heights of) the first signal (PS1) and the second signal (PS2), it is possible to get an indication of the received power in the optically detectable effect (90) as delivered by a power level (81; 82) in the write pulse train (80) continuously during writing and for a broad range of carrier rotation speeds.

摘要翻译： 本发明公开了一种用于在诸如DVD或BD格式的光盘的光载体上记录数据的光记录驱动器。 辐射源被布置成发射写脉冲串（80），用于写入光学可检测的效果（90），即凹坑或标记。 光检测装置（10）从写入脉冲串（80）的起始时间部分检测第一反射辐射束脉冲（R1），并产生指示第一脉冲中的功率的对应的第一信号（PS1），光检测 装置（10）进一步从写入脉冲串（80）的结束时间部分检测第二反射辐射脉冲（R2），并产生指示第二脉冲中的功率的对应的第二信号（PS2）。 通过比较（例如，高度）第一信号（PS1）和第二信号（PS2），可以获得光功率级（81）所传递的光学可检测效应（90）中的接收功率的指示。 82）在写入期间连续写入脉冲串（80）以及宽范围的载波转速。

公开(公告)号：US20090028022A1

公开(公告)日：2009-01-29

申请号：US11993896

申请日：2006-06-27

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B20/18 ,  G11B7/09

CPC分类号： G11B7/0901 ,  G11B7/0943 ,  G11B2007/0013

摘要： A tracking error (TE) signal is formed from a single spot on a photodetector 25 to improve the robustness in optical disc applications having a reduced track-pitch. Reduced track pitches are employed in high data capacity optical disc formats. By using high frequency cross-correlation of a central aperture signal, the differences within the left 21 and right 23 detector halves yield a divergence from the zero crossing that produces a more pronounced tracking signal. The more pronounced tracking signal is insensitive to incoherent cross talk in multi-layer discs.

摘要翻译： 从光电检测器25上的单个点形成跟踪误差（TE）信号，以改善具有减小的轨道间距的光盘应用的鲁棒性。 在高数据容量的光盘格式中采用减少轨道间距。 通过使用中心孔径信号的高频互相关，左侧21和右侧23个检测器之间的差异部分产生了从过零点产生更明显的跟踪信号的偏差。 更明显的跟踪信号对多层光盘中的非相干串扰不敏感。

公开(公告)号：US20080267025A1

公开(公告)日：2008-10-30

申请号：US12097069

申请日：2006-12-05

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B5/09

CPC分类号： G11B7/0956

摘要： A method of controlling the positioning of an objective lens of a lens system for controlling an optical beam used in reading and/or recording information from/onto a track of an optical disc, the method comprising steps of detecting modulated optical signals corresponding to the intensity of a reflected optical beam, the reflected optical beam being modulated by the periodic structures of the track of the optical disc, deriving a radial tilt error signal from the modulated optical signals indicative of a radial tilt, wherein the radial tilt refers to the tilt of the objective lens with respect to the optical disc in a radial direction; using the radial tilt error signal for adjusting the position of the objective lens with respect to the optical disc in a radial direction, the method characterized by using the radial tilt error signal for adjusting the position of the objective lens by means of a feedback loop. The radial tilt error signal may be proportional to a cross correlation signal between a Radial Push Pull (RPP) signal and a Central Aperture (CA) signal or a cross correlation signal between a Radial Push Pull (RPP) and a Diagonal Push Pull (DPP) signal.

摘要翻译： 一种控制用于控制用于从光盘的轨道读取和/或记录信息的光束的透镜系统的物镜的定位的方法，所述方法包括以下步骤：检测对应于强度的调制光信号 反射的光束被光盘的轨道的周期性结构调制，从表示径向倾斜的调制的光信号导出径向倾斜误差信号，其中径向倾斜是指 所述物镜相对于所述光盘在径向方向上; 使用径向倾斜误差信号来径向调整物镜相对于光盘的位置，该方法的特征在于使用径向倾斜误差信号通过反馈回路来调节物镜的位置。 径向倾斜误差信号可以与径向推拉（RPP）信号和中心孔径（CA）信号之间的互相关信号或径向推拉（RPP）和对角推拉（DPP）之间的互相关信号成比例 ）信号。

公开(公告)号：US20110261666A1

公开(公告)日：2011-10-27

申请号：US13176323

申请日：2011-07-05

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B7/125

CPC分类号： G11B7/0062 ,  G11B7/1263 ,  G11B11/10595

摘要： The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train (80) for writing an optically detectable effect (90) i.e. a pit or mark. Photo detection means (10) detects a first reflected radiation beam pulse (R1) from a start time portion of the write pulse train (80) and generates a corresponding first signal (PS1) indicative of the power in the first pulse, the photo detection means (10) further detects a second reflected radiation pulse (R2) from an end time portion of the write pulse train (80) and generates a corresponding second signal (PS2) indicative of the power in the second pulse. By comparing (e.g. the heights of) the first signal (PS1) and the second signal (PS2), it is possible an indication of the received power in the optically detectable effect (90) as delivered by a power level (81; 82) in the write pulse train (80) continuously during writing and for a broad range of carrier rotation speeds.

摘要翻译： 本发明公开了一种用于在诸如DVD或BD格式的光盘的光载体上记录数据的光记录驱动器。 辐射源被布置成发射写脉冲串（80），用于写入光学可检测的效果（90），即凹坑或标记。 光检测装置（10）从写入脉冲串（80）的起始时间部分检测第一反射辐射束脉冲（R1），并产生指示第一脉冲中的功率的对应的第一信号（PS1），光检测 装置（10）进一步从写入脉冲串（80）的结束时间部分检测第二反射辐射脉冲（R2），并产生指示第二脉冲中的功率的对应的第二信号（PS2）。 通过将第一信号（PS1）和第二信号（PS2）的比较（例如，高度）与由功率电平（81; 82）传递的可光学检测效应（90）中的接收功率的指示是可能的， 在写入期间连续写入脉冲串（80）以及宽范围的载波转速。

公开(公告)号：US07995441B2

公开(公告)日：2011-08-09

申请号：US12282565

申请日：2007-03-05

申请人： Ruud Vlutters ,  Bin Yin

发明人： Ruud Vlutters ,  Bin Yin

IPC分类号： G11B7/0045

CPC分类号： G11B7/0062 ,  G11B7/1263 ,  G11B11/10595

摘要： The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train (80) for writing an optically detectable effect (90) i.e. a pit or mark. Photo detection means (10) detects a first reflected radiation beam pulse (R1) from a start time portion of the write pulse train (80) and generates a corresponding first signal (PS1) indicative of the power in the first pulse, the photo detection means (10) further detects a second reflected radiation pulse (R2) from an end time portion of the write pulse train (80) and generates a corresponding second signal (PS2) indicative of the power in the second pulse. By comparing (e.g. the heights of) the first signal (PS1) and the second signal (PS2), it is possible to get an indication of the received power in the optically detectable effect (90) as delivered by a power level (81; 82) in the write pulse train (80) continuously during writing and for a broad range of carrier rotation speeds.

摘要翻译： 本发明公开了一种用于在诸如DVD或BD格式的光盘的光载体上记录数据的光记录驱动器。 辐射源被布置成发射写脉冲串（80），用于写入光学可检测的效果（90），即凹坑或标记。 光检测装置（10）从写入脉冲串（80）的起始时间部分检测第一反射辐射束脉冲（R1），并产生指示第一脉冲中的功率的对应的第一信号（PS1），光检测 装置（10）进一步从写入脉冲串（80）的结束时间部分检测第二反射辐射脉冲（R2），并产生指示第二脉冲中的功率的对应的第二信号（PS2）。 通过比较（例如，高度）第一信号（PS1）和第二信号（PS2），可以获得光功率级（81）所传递的光学可检测效应（90）中的接收功率的指示。 82）在写入期间连续写入脉冲串（80）以及宽范围的载波转速。