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    Reduced-complexity sequence detection
    1.
    发明公开
    Reduced-complexity sequence detection 审中-公开
    Sequenzdetektion mit verringerterKomplexität

    公开(公告)号：EP1058394A1

    公开(公告)日：2000-12-06

    申请号：EP00303170.5

    申请日：2000-04-14

    申请人： Texas Instruments Incorporated

    发明人： Nikolic, Borivoje ,  Fu, Leo ,  Leung, Michael ,  Oklobdzija, Vojin G ,  Yamasaki, Richard

    IPC分类号： H03M13/41 ,  H03M13/25 ,  G11B20/10

    CPC分类号： G11B20/10064 ,  G11B20/10 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10175 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/1426 ,  G11B20/18 ,  H03M13/25 ,  H03M13/3961 ,  H03M13/4107 ,  H03M13/4169 ,  H03M13/6343 ,  H03M13/6502

    摘要： Reduction of the complexity of a Viterbi-type sequence detector is disclosed. It was based on elimination of less probably taken branches in the trellis. The method is applied to the design of the E 2 PR4 channel with 8/9 rate sliding block trellis code. Coding, by itself eliminates two states by coding constraints, and the disclosed method reduces the number of required ACS units from 14 to 11, while reducing their complexity as well. For the implementation of E 2 PR4 detection, 4 4-way, 3 3-way, 3 2-way and one 1-way ACSs are needed. System simulations show no BER performance drop at common SNRs when compared with a full 16-state E 2 PR4 implementation in magnetic disk drives.

    摘要翻译： 公开了维特比型序列检测器的复杂度的降低。 它是基于在网格中消除较少可能采取的分支。 该方法应用于具有8/9速率滑块网格码的E 2 PR4信道的设计。 编码本身通过编码约束消除了两个状态，并且所公开的方法将所需的ACS单元的数量从14减少到11，同时降低了它们的复杂性。 为了实现E <2> PR4检测，需要4路4路，3路，3路，1路ACS。 当与磁盘驱动器中的完全16状态E 2 PR4实现相比时，系统模拟显示在常见SNR处没有BER性能下降。

    DATA DETECTION DEVICE, REPRODUCTION DEVICE, AND DATA DETECTION METHOD
    2.
    发明公开
    DATA DETECTION DEVICE, REPRODUCTION DEVICE, AND DATA DETECTION METHOD 审中-公开

    公开(公告)号：EP3267440A4

    公开(公告)日：2018-06-20

    申请号：EP15884029

    申请日：2015-12-09

    申请人： SONY CORP

    发明人： HIGASHINO SATORU

    IPC分类号： G11B20/10

    CPC分类号： G11B20/10055 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10277 ,  G11B20/10287

    摘要： Data detection capability is improved by whitening crosstalk noise from an equalization signal and detecting binary data. Each of a plurality of detection signals generated by using photoreceptor signals of a plurality of divided areas of an optical detection section is input to one of a plurality of adaptive equalizers, and outputs of the plurality of adaptive equalizers are computed to obtain an equalization signal for returning light at the time of shining of light onto bounds including a target track subject to data detection and adjacent tracks of an optical recording medium having a plurality of tracks formed thereon. Crosstalk noise from the adjacent tracks included in the equalization signal obtained by this multi-input adaptive equalization process is whitened first, followed by a binarization process. Also, an equalization error is found from an equalization target obtained based on a binary detection result and from the equalization signal obtained by the multi-input adaptive equalization process, and the equalization error is supplied to the plurality of adaptive equalizers as a control signal for adaptive equalization. Further, a whitening factor updating process is also performed to adaptively update a filter factor of a whitening filter.

    Arrangement for adaptive bit recovery
    5.
    发明公开
    Arrangement for adaptive bit recovery 审中-公开
    AnordnungfürAdaptive Bit-Wiedergewinnung

    公开(公告)号：EP1575176A1

    公开(公告)日：2005-09-14

    申请号：EP04005528.7

    申请日：2004-03-09

    申请人： DEUTSCHE THOMSON-BRANDT GMBH

    发明人： Kochale, Axel ,  Schmidt, Dirk ,  Rapp, Stefan

    IPC分类号： H03M13/41 ,  G11B20/10 ,  G11B5/09

    CPC分类号： G11B20/10296 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10111 ,  G11B20/10287 ,  G11B20/10481 ,  G11B2020/1288 ,  G11B2220/2541

    摘要： The present invention relates to an arrangement for adaptive bit recovery, and to an apparatus for reading from and/or writing to recording media using such arrangement.
    According to the invention, an arrangement for adaptive bit recovery including an adaptive equalizer (13) and an adaptive partial response maximum likelihood detector (14) further includes enhanced control measures for the adaptive equalizer (13) and/or the adaptive partial response maximum likelihood detector (14).

    摘要翻译： 本发明涉及一种用于自适应位恢复的装置，以及一种使用这种布置从记录介质读取和/或写入装置。 根据本发明，包括自适应均衡器（13）和自适应部分响应最大似然检测器（14）的自适应位恢复装置还包括用于自适应均衡器（13）和/或自适应部分响应最大似然检测器 部分响应最大似然检测器（14）。

    DATA DETECTION DEVICE, REPRODUCTION DEVICE, AND DATA DETECTION METHOD
    6.
    发明公开
    DATA DETECTION DEVICE, REPRODUCTION DEVICE, AND DATA DETECTION METHOD 审中-公开
    数据检测装置，再现装置和数据检测方法

    公开(公告)号：EP3267440A1

    公开(公告)日：2018-01-10

    申请号：EP15884029.8

    申请日：2015-12-09

    申请人： Sony Corporation

    发明人： HIGASHINO, Satoru

    IPC分类号： G11B20/10 ,  G11B20/18

    CPC分类号： G11B20/10055 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10277 ,  G11B20/10287

    摘要： Data detection capability is improved by whitening crosstalk noise from an equalization signal and detecting binary data. Each of a plurality of detection signals generated by using photoreceptor signals of a plurality of divided areas of an optical detection section is input to one of a plurality of adaptive equalizers, and outputs of the plurality of adaptive equalizers are computed to obtain an equalization signal for returning light at the time of shining of light onto bounds including a target track subject to data detection and adjacent tracks of an optical recording medium having a plurality of tracks formed thereon. Crosstalk noise from the adjacent tracks included in the equalization signal obtained by this multi-input adaptive equalization process is whitened first, followed by a binarization process. Also, an equalization error is found from an equalization target obtained based on a binary detection result and from the equalization signal obtained by the multi-input adaptive equalization process, and the equalization error is supplied to the plurality of adaptive equalizers as a control signal for adaptive equalization. Further, a whitening factor updating process is also performed to adaptively update a filter factor of a whitening filter.

    摘要翻译： 通过使来自均衡信号的串扰噪声白化并检测二进制数据来改善数据检测能力。 通过使用光学检测部分的多个分割区域的光感受器信号生成的多个检测信号中的每一个被输入到多个自适应均衡器中的一个，并且计算多个自适应均衡器的输出以获得均衡信号， 在光照射时将光返回到包括受到数据检测的目标轨道和其上形成有多个轨道的光学记录介质的相邻轨道的边界上。 通过该多输入自适应均衡处理获得的均衡信号中包括的相邻轨道的串扰噪声首先被白化，随后是二值化处理。 而且，从基于二进制检测结果获得的均衡目标和通过多输入自适应均衡处理获得的均衡信号中找到均衡误差，并且将均衡误差提供给多个自适应均衡器作为用于 自适应均衡。 此外，还执行白化因子更新处理以自适应地更新白化滤波器的滤波因子。

    REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE
    8.
    发明公开
    REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE 审中-公开
    方法一个评价的给定信号，信息记录介质，播放设备和记录装置

    公开(公告)号：EP2333776A1

    公开(公告)日：2011-06-15

    申请号：EP09817469.1

    申请日：2009-09-29

    申请人： Panasonic Corporation

    发明人：

    IPC分类号： G11B20/18 ,  G11B7/005 ,  G11B20/14

    CPC分类号： G11B20/1403 ,  G11B7/0037 ,  G11B7/00458 ,  G11B7/005 ,  G11B7/24038 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/1012 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/10407 ,  G11B20/10481 ,  G11B20/1049 ,  G11B20/1816 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2541

    摘要： A reproduction signal evaluation method according to the present invention includes a step of generating a binary signal from an information recording medium on which a data sequence including marks and spaces in combination is recordable, using a PRML signal processing method from a signal obtained by reproducing the data sequence; and a differential calculation step of calculating a differential metric using a first state transition path having a maximum likelihood and a second state transition path having a second maximum likelihood, and a reproduction signal, the first state transition path and the second state transition path being obtained based on the binary signal. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.

    摘要翻译： 的再现信号的评价方法雅丁到本发明包括在信息从生成记录介质的二进制信号的步骤在其上包含在组合的标记和间隔的数据序列是可记录的，使用PRML信号处理方法从通过再现而获得的信号 数据序列; 和使用具有最大似然和具有第二最大似然的第二状态迁移路径，和一个再现信号，第一状态转移路径和所述第二状态转变的路径的第一状态过渡路径来计算差度量的差分计算步骤中获得 基于所述二进制信号。 在一个图案，包括最短标记和最短间隔的前相邻或最短标记之后，最短标记的边缘的位移量是从关于第一图案中的一个计算的差分度量获得，其中相邻于最短的空间 标记和不相邻的最短空间比最短间隔时间较长; 和第二图案，其中相邻，以最短的空间，而不是相邻于最短标记的标记是最短标记更长的时间。