公开(公告)号：US09384779B2

公开(公告)日：2016-07-05

申请号：US12653862

申请日：2009-12-18

申请人： Jonathan Darrel Coker ,  David Timothy Flynn

发明人： Jonathan Darrel Coker ,  David Timothy Flynn

IPC分类号： G11B5/09 ,  G11B20/12 ,  G11B5/596 ,  G11B20/14

CPC分类号： G11B20/1217 ,  G11B5/59655 ,  G11B5/59688 ,  G11B2020/1238 ,  G11B2020/1282 ,  G11B2020/1292 ,  G11B2020/1457 ,  G11B2220/2516

摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and location information such as the track-ID. The juxtaposition of sequences in the servo wedges is additionally constrained to increase the detectability of the contribution of adjacent sequences in the read signal. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences.

摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在伺服楔中序列的并置被附加地限制在增加读信号中相邻序列的贡献的可检测性。 集成的伺服字段可以通过相邻序列读取的信号的幅度来提供与数据轨道的中心相关的位置误差信号（PES）。

公开(公告)号：US09165599B1

公开(公告)日：2015-10-20

申请号：US14321641

申请日：2014-07-01

申请人： Marvell International Ltd.

发明人： Mats Oberg ,  Pantas Sutardja

IPC分类号： G11B5/02 ,  G11B20/10 ,  H04L25/03 ,  H04L25/06 ,  G11B20/14

CPC分类号： G11B20/10351 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10203 ,  G11B2020/1457 ,  H04L25/03866 ,  H04L25/06

摘要： A method includes: writing data in a magnetic recording system using a write channel of the magnetic recording system; processing output data of the write channel in accordance with a read channel of the magnetic recording system to measure baseline wander; and triggering re-writing through the write channel using different data scramblings when the measured baseline wander fails to satisfy a criterion. The processing can include modeling the read channel of the magnetic recording system, modeling one or more high pass filtering circuits of the magnetic recording system, or both. The writing can include encoding the data after scrambling of the data, the processing can include using a discrete time model of DC offset in the magnetic recording system, and the triggering can include triggering re-writing through the write channel using different scrambling seeds when the measured baseline wander fails to exceed a threshold.

摘要翻译： 一种方法包括：使用磁记录系统的写通道在磁记录系统中写入数据; 根据磁记录系统的读通道处理写通道的输出数据，以测量基线漂移; 并且当测量的基线漂移不能满足标准时，通过使用不同数据加扰的写通道触发重写。 该处理可以包括对磁记录系统的读通道进行建模，对磁记录系统的一个或多个高通滤波电路建模，或者两者。 写入可以包括在数据加扰之后对数据进行编码，该处理可以包括在磁记录系统中使用DC偏移的离散时间模型，并且触发可以包括当使用不同的加扰种子时通过写入通道触发重写 测量的基线漂移不能超过阈值。

公开(公告)号：USRE44013E1

公开(公告)日：2013-02-19

申请号：US12118075

申请日：2008-05-09

申请人： Wen-Yi Wu ,  Jyh-Shin Pan

发明人： Wen-Yi Wu ,  Jyh-Shin Pan

IPC分类号： H04B14/04 ,  G11B20/10 ,  H03M5/00 ,  H03M7/00

CPC分类号： G11B20/1426 ,  G11B2020/1457 ,  G11B2020/1461 ,  G11B2020/1469

摘要： A digital sum variation (DSV) computation method and system is proposed, which is capable of determining the DSV value of a bit stream of channel-bit symbols to thereby find the optimal merge-bit symbol for insertion between each succeeding pair of the channel-bit symbols. This DSV computation method and system is characterized in the use of a Zero Digital Sum Variation (ZDSV) principle to determine the DSV. This DSV computation method and system can find the optimal merge-bit symbol for insertion between each succeeding pair of the channel-bit symbols in a more cost-effective manner with the need for a reduced amount of memory and utilizes a lookup table requiring a reduced amount of memory space for storage so that memory space can be reduced as compared to the prior art. This DSV computation method and system is therefore more advantageous to use than the prior art.

公开(公告)号：USRE42962E1

公开(公告)日：2011-11-22

申请号：US09522786

申请日：2000-03-07

申请人： Jun Yonemitsu ,  Ryuichi Iwamura ,  Shunji Yoshimura ,  Makoto Kawamura

发明人： Jun Yonemitsu ,  Ryuichi Iwamura ,  Shunji Yoshimura ,  Makoto Kawamura

IPC分类号： G11B7/013 ,  G11B20/18

CPC分类号： G11B7/24085 ,  G11B7/00745 ,  G11B7/013 ,  G11B7/24079 ,  G11B20/00768 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1426 ,  G11B20/18 ,  G11B20/1833 ,  G11B20/1866 ,  G11B27/005 ,  G11B27/034 ,  G11B27/105 ,  G11B27/3063 ,  G11B27/329 ,  G11B2020/10888 ,  G11B2020/1222 ,  G11B2020/1238 ,  G11B2020/1267 ,  G11B2020/1294 ,  G11B2020/1457 ,  G11B2020/1461 ,  G11B2020/1465 ,  G11B2020/1853 ,  G11B2220/213 ,  G11B2220/218 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2562 ,  H03M13/09 ,  H03M13/15 ,  H03M13/1515 ,  H03M13/2921 ,  H03M13/2924 ,  H04N5/85 ,  H04N5/9208 ,  H04N5/926 ,  H04N9/8042 ,  H04N9/8063 ,  H04N9/8205 ,  H04N9/8227 ,  H04N9/8233 ,  H04N9/8244 ,  H04N2005/91321

摘要： An optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm±0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 μm and 1.05 μm; with the tracks being divided into a lead-in area, a program area and a lead-out area. The data includes table of contents (TOC) information recorded in a plurality of sectors in at least one TOC track and user information recorded in a plurality of sectors in user tracks; with the TOC information including addresses of start sectors recorded in the user tracks. The data (both user and TOC information) is encoded in a long distance error correction code having at least eight parity symbols, and is run length limited (RLL) modulated.

摘要翻译： 具有直径小于140mm，厚度为1.2mm±0.1mm的光盘，其上记录有数据的多个记录轨道作为浮雕凹坑，表示信息并且在0.646μm和1.05μm之间的范围内显示轨道间距 ; 轨道分为导入区，程序区和导出区。 数据包括记录在至少一个TOC轨道中的多个扇区中的目录（TOC）信息和记录在用户轨道中的多个扇区中的用户信息; 其中TOC信息包括记录在用户轨道中的开始扇区的地址。 数据（用户和TOC信息两者）都被编码在具有至少八个奇偶校验符号的长距离纠错码中，并且被运行长度限制（RLL）调制。

公开(公告)号：US08059514B2

公开(公告)日：2011-11-15

申请号：US12674446

申请日：2008-08-22

申请人： Jacobus Maarten Den Hollander ,  Josephus Arnoldus Henricus Maria Kahlman

发明人： Jacobus Maarten Den Hollander ,  Josephus Arnoldus Henricus Maria Kahlman

IPC分类号： G11B7/00

CPC分类号： G11B20/00086 ,  G11B7/24094 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B23/284 ,  G11B23/36 ,  G11B23/40 ,  G11B2020/1453 ,  G11B2020/1457 ,  G11B2220/2541

摘要： A visible pattern is obtained by modulating the digital sum value. Because the digital sum value modulation allows the choice of several different channel bits groups between DC control points, the selection of a group of channel bits resulting in a change of reflection. This creation of a visible pattern is highly suitable for Blueray as the parity preserving property of the channel code guarantees disparity inversion by the DC-control bit, which keeps the DSV excursions between hard limits. As a result only small DSV deliberate variations are required to produce a grating, which will not deteriorate the bit-detection margin of the optical disc.

摘要翻译： 通过调制数字和值获得可视图案。 由于数字和值调制允许在DC控制点之间选择几个不同的信道位组，所以选择一组通道位导致反射变化。 这种可见图案的创建非常适合于Blueray，因为通道代码的奇偶校验保留属性保证DC控制位的视差反转，这保持DSV在硬限制之间的偏移。 因此，仅需要小的DSV有意的变化来产生光栅，这不会劣化光盘的位检测余量。

公开(公告)号：US20110164487A1

公开(公告)日：2011-07-07

申请号：US13062371

申请日：2010-02-12

申请人： Isao Kobayashi ,  Kohei Nakata

发明人： Isao Kobayashi ,  Kohei Nakata

IPC分类号： G11B20/10 ,  G11B20/02 ,  G11B7/135

CPC分类号： G11B20/10212 ,  G11B7/00456 ,  G11B7/1263 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10481 ,  G11B2020/1457 ,  G11B2220/2541 ,  G11B2220/2562

摘要： A writing condition adjusting apparatus according to the present invention adjusts a writing condition using first and second recording patterns. The first recording pattern is used to adjust a writing condition for recording marks and spaces, of which the lengths are equal to or longer than a predetermined recording length, while the second recording pattern is used to adjust a writing condition for recording marks and spaces, of which the lengths are shorter than the predetermined recording length by one recording unit length. If it has been decided that the writing condition that has once been determined by making the write adjustment on such marks that are shorter by one recording unit length needs to be adjusted again, a signal index value that has been defined based on the first recording pattern is set to be a target value. The writing condition for recording marks, which are shorter by one recording unit length, is adjusted again so that a signal index value associated with those marks that are shorter by one recording unit length becomes as close to the target value as possible.

摘要翻译： 根据本发明的写入条件调整装置使用第一和第二记录图案来调整写入条件。 第一记录图案用于调整长度等于或长于预定记录长度的记录标记和间隔的写入条件，而第二记录图案用于调整记录标记和间隔的写入条件， 其长度比预定记录长度短一个记录单元长度。 如果已经确定需要再次调整通过对一个记录单元长度较短的标记进行写入调整而确定的写入条件，则基于第一记录模式定义的信号索引值 被设置为目标值。 再次调整一个记录单元长度缩短的记录标记的写入条件，使与一个记录单元长度缩短的那些标记相关联的信号索引值尽可能接近目标值。

公开(公告)号：US20110149432A1

公开(公告)日：2011-06-23

申请号：US12653862

申请日：2009-12-18

申请人： Jonathan Darrel Coker ,  David Timothy Flynn

发明人： Jonathan Darrel Coker ,  David Timothy Flynn

IPC分类号： G11B5/596

CPC分类号： G11B20/1217 ,  G11B5/59655 ,  G11B5/59688 ,  G11B2020/1238 ,  G11B2020/1282 ,  G11B2020/1292 ,  G11B2020/1457 ,  G11B2220/2516

摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and location information such as the track-ID. The juxtaposition of sequences in the servo wedges is additionally constrained to increase the detectability of the contribution of adjacent sequences in the read signal. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences.

摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在伺服楔中序列的并置被附加地限制在增加读信号中相邻序列的贡献的可检测性。 集成的伺服字段可以通过相邻序列读取的信号的幅度来提供与数据轨道的中心相关的位置误差信号（PES）。

公开(公告)号：US07848194B2

公开(公告)日：2010-12-07

申请号：US11882256

申请日：2007-07-31

申请人： Masashi Yamawaki

发明人： Masashi Yamawaki

IPC分类号： G11B7/00

CPC分类号： G11B20/1426 ,  G11B7/006 ,  G11B2020/1287 ,  G11B2020/1457 ,  G11B2220/216 ,  G11B2220/2562

摘要： A data writing device for preventing a phase-change optical disc from deteriorating due to repeated writing and for preventing the rewritable number of times of the disc from decreasing. The device writes data including synchronization frames to the disc. Each synchronization frame includes a primary or secondary synchronization signal. A comparator compares a first accumulated DSV for specifying the data including the primary synchronization signal for the synchronization frame with a second accumulated DSV for specifying the recording data including the secondary synchronization signal for the synchronization frame and generates a first selection signal based on the comparison. An inverter randomly inverts the first selection signal to generate a second selection signal. A selection circuit receives the primary and secondary synchronization signals and outputs the primary or secondary synchronization signal in response to the second selection signal.

摘要翻译： 一种数据写入装置，用于防止相变光盘由于重复写入而恶化，并且防止盘的可重写次数减少。 设备将包括同步帧的数据写入光盘。 每个同步帧包括主或次同步信号。 比较器将用于指定包括用于同步帧的主同步信号的数据的第一累积DSV与用于指定包括用于同步帧的次同步信号的记录数据的第二累积DSV进行比较，并且基于该比较生成第一选择信号。 逆变器随机地反转第一选择信号以产生第二选择信号。 选择电路接收主同步信号和次同步信号，并响应于第二选择信号输出主或次同步信号。

公开(公告)号：US20100246359A1

公开(公告)日：2010-09-30

申请号：US12414310

申请日：2009-03-30

申请人： John Anderson Fergus Ross ,  Aria Pezeshk

发明人： John Anderson Fergus Ross ,  Aria Pezeshk

IPC分类号： G11B7/00 ,  H03M13/51 ,  H03M13/05 ,  G06F11/10

CPC分类号： H03M13/31 ,  G11B20/10009 ,  G11B20/10296 ,  G11B20/10379 ,  G11B20/1426 ,  G11B2020/1453 ,  G11B2020/1457 ,  G11B2220/2504 ,  G11B2220/2541 ,  H03M5/145 ,  H03M13/3905 ,  H03M13/3972

摘要： The present techniques provide systems and methods for decoding a data signal with a control bit to improve bit estimation. The techniques in one embodiment involve using decoding algorithms to estimate the a posteriori state probabilities and the a posteriori transition probabilities of the data encoding, and estimating bit state probabilities. The techniques further involve using a control bit in the bit stream and comparing the estimation of the control bit state in the segment of the bit stream with a test control bit determined based on an average of bit states from the encoded segment of the bit stream. If the estimation of the control bit and the test control bit are not equal, the state of the bit estimate with the lowest confidence probability will be changed.

摘要翻译： 本技术提供了利用控制位对数据信号进行解码以提高比特估计的系统和方法。 一个实施例中的技术涉及使用解码算法来估计后验状态概率和数据编码的后验转移概率，以及估计比特状态概率。 这些技术还涉及使用比特流中的控制比特并且比较比特流的片段中的控制比特状态的估计与基于来自比特流的编码片段的比特状态的平均值确定的测试控制比特。 如果控制位和测试控制位的估计不相等，则置信概率最低的位估计的状态将被改变。

公开(公告)号：US07791507B2

公开(公告)日：2010-09-07

申请号：US12097570

申请日：2006-12-08

申请人： Willem Marie Julia Marcel Coene ,  Andries Pieter Hekstra ,  Hiroyuki Yamagishi ,  Makoto Noda

发明人： Willem Marie Julia Marcel Coene ,  Andries Pieter Hekstra ,  Hiroyuki Yamagishi ,  Makoto Noda

IPC分类号： H03M7/00

CPC分类号： G11B20/1426 ,  G11B20/10055 ,  G11B20/10296 ,  G11B2020/1453 ,  G11B2020/1457 ,  H03M5/145 ,  H03M7/40 ,  H03M13/29 ,  H03M13/31 ,  H03M13/3761 ,  H03M13/3972 ,  H03M13/41

摘要： A coder converts M-bit information words into N-bit code words by generating a first and a second provisional code sequence using a coding rule by which, code words are logically assigned to information words so that a two's complement of a sum of coding bits included in the first provisional code sequence, is always different from a two's complement of a sum of coding bib included in the second provisional code sequence, when a first code state of the first sequence encoded starting from a predetermined original state is identical to a second code state of the second sequence encoded starting from said predetermined original state. Then, selecting either the first sequence or the second sequence depending on a value of at least one parameter that correlates with a DC content of the coded bit stream.

摘要翻译： 编码器通过使用编码规则产生第一和第二临时码序列来将M比特信息字转换为N比特码序列，通过该编码规则，码字被逻辑地分配给信息字，使得编码比特的和的二进制补码 当从预定原始状态开始编码的第一序列的第一编码状态与第二临时编码序列编码的第一编码状态相同时，总是不同于第二临时编码序列中包括的编码围嘴的和的二进制补码 从所述预定原始状态开始编码的第二序列的编码状态。 然后，根据与编码比特流的DC内容相关联的至少一个参数的值来选择第一序列或第二序列。