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1. 发明授权

US09892754B2 Data detection device, playback device, and data detection method 有权
公开(公告)号：US09892754B2
公开(公告)日：2018-02-13
申请号：US15531984
申请日：2015-12-09
申请人： SONY CORPORATION
发明人： Satoru Higashino
IPC分类号： G11B27/36 , 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 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, and supplied 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.

2. 发明授权

US09496985B2 Decoding system and decoding method 有权
标题翻译：解码系统和解码方法
公开(公告)号：US09496985B2
公开(公告)日：2016-11-15
申请号：US14130794
申请日：2013-05-29
申请人： Panasonic Corporation
发明人： Tsuyoshi Nakasendo , Yasumori Hino , Kohei Nakata , Yuji Takagi
IPC分类号： H04B7/216 , E21C25/10 , H04L1/00 , H04B1/707 , G11B20/10 , G11B20/14 , G11B20/18
CPC分类号： H04L1/0061 , G11B20/10277 , G11B20/10287 , G11B20/1426 , G11B20/1833 , G11B2020/185 , H04B1/707 , H04L1/0054
摘要： A decoding system includes: a modulator which modulates user data by using a modulation rule which converts the user data into a modulation pattern; a regenerator which generates a regenerative signal from a signal obtained by transmitting the user data after modulation through a transmission path; a transmission path decoder which generates signals as generation signals corresponding to the modulation pattern, and calculates k (k is a positive integer) distances between the regenerative signal and the k generation signals in an interval having a length fixedly or dynamically determined; and a demodulator which calculates reliability information for each bit of the user data, and estimates each bit of the user data based on the calculated reliability information. The demodulator calculates likelihood that each bit of the user data is 1 and each bit of the user data is 0 by Formula (A), and calculates the reliability information by Formula (B).
摘要翻译：解码系统包括：调制器，其通过使用将用户数据转换为调制模式的调制规则来调制用户数据; 再生器，其从通过传输路径在调制后发送用户数据而获得的信号产生再生信号; 产生作为与调制图案对应的生成信号的信号的传输路径解码器，并且在具有固定或动态确定的长度的间隔中计算再生信号和k个生成信号之间的k（k是正整数）距离; 以及解调器，其计算用户数据的每一位的可靠性信息，并且基于所计算的可靠性信息来估计用户数据的每一位。解调器通过公式（A）计算用户数据的每一位为1，用户数据的每一位为0的似然度，并且通过公式（B）计算可靠性信息。

3. 发明申请

US20150180512A1 Systems and Methods of Converting Detector Output To Multi-Level Soft Information 有权
标题翻译：将检测器输出转换为多级软信息的系统和方法
公开(公告)号：US20150180512A1
公开(公告)日：2015-06-25
申请号：US14140451
申请日：2013-12-24
申请人： LSI Corporation
发明人： Seongwook Jeong , Lu Pan , Jianzhong Huang , Haitao Xia
IPC分类号： H03M13/45 , H03M13/11 , G11B20/10
CPC分类号： G11B20/10037 , G11B20/10046 , G11B20/10268 , G11B20/10287 , G11B20/10296 , G11B2020/185 , H03M13/1171 , H03M13/2957 , H03M13/6343
摘要： A data processing system includes a binary data detector having a hard decision output, a reliability calculator operable to calculate an error pattern reliability metric for each of a number of dominant error patterns associated with the hard decision output, and a converter operable to convert the error pattern reliability metrics to multi-level soft information.
摘要翻译：数据处理系统包括具有硬决策输出的二进制数据检测器，可操作的可靠性计算器，用于计算与硬判决输出相关联的多个主要错误模式中的每一个的误差模式可靠性度量;以及转换器，用于将误差模式可靠性度量到多级软信息。

4. 发明申请

US20140226231A1 ADAPTIVE SOFT-OUTPUT DETECTOR FOR MAGNETIC TAPE READ CHANNELS 有权
标题翻译：用于磁带读取通道的自适应软输出检测器
公开(公告)号：US20140226231A1
公开(公告)日：2014-08-14
申请号：US14253724
申请日：2014-04-15
申请人： International Business Machines Corporation
发明人： Katherine T. Blinick , Robert A. Hutchins , Thomas Mittelholzer , Sedat Oelcer
IPC分类号： G11B20/10
CPC分类号： G11B20/10046 , G11B5/008 , G11B20/10074 , G11B20/10287 , G11B2020/185 , G11B2020/1853 , G11B2220/956
摘要： In one embodiment, a method includes passing a signal through an adaptive noise whitening filter, wherein one or more noise whitening coefficients used in the noise whitening filter are updated using a noise whitening filter coefficient updater, wherein the noise whitening filter is configured to process the signal according to a transfer polynomial: W(D)=1−(p1D+ . . . pλ′·Dλ′), where p1 . . . pλ′ are noise whitening coefficients, where a tape channel is characterized by a transfer polynomial F(D)=1+f1D+ . . . +fLDL where D is delay corresponding to bit duration, with 2L being a number of states of the tape channel, wherein a soft detector has a total of 2L+λ states, the noise whitening filter comprises 2λ′ states, λ′ is greater than λ, L represents a memory length of the tape channel, and λ represents a memory length of the noise whitening filter.
摘要翻译：在一个实施例中，一种方法包括使信号通过自适应噪声白化滤波器，其中使用噪声白化滤波器系数更新器来更新在噪声白化滤波器中使用的一个或多个噪声白化系数，其中，噪声白化滤波器被配置为处理信号根据转移多项式：W（D）= 1-（p1D + ...pλ'·Dλ'），其中p1。。。 pλ'是噪声增白系数，其中磁带通道的特征在于传递多项式F（D）= 1 + f1D +。。。 + fLDL其中D是对应于位持续时间的延迟，其中2L是磁带通道的状态数，其中软检测器具有总共2L +λ状态，噪声白化滤波器包括2λ'状态，λ'大于 λ，L表示带通道的存储器长度，λ表示噪声增白滤波器的存储器长度。

5. 发明授权

US08797670B2 Adaptive soft-output detector for magnetic tape read channels 有权
标题翻译：用于磁带读取通道的自适应软输出检测器
公开(公告)号：US08797670B2
公开(公告)日：2014-08-05
申请号：US13527508
申请日：2012-06-19
申请人： Katherine T. Blinick , Robert A. Hutchins , Thomas Mittelholzer , Sedat Oelcer
发明人： Katherine T. Blinick , Robert A. Hutchins , Thomas Mittelholzer , Sedat Oelcer
IPC分类号： G11B5/035 , G11B20/10
CPC分类号： G11B20/10046 , G11B5/008 , G11B20/10074 , G11B20/10287 , G11B2020/185 , G11B2020/1853 , G11B2220/90
摘要： In accordance with one embodiment, a data storage system includes a tape channel for reading precoded data from a magnetic tape medium to produce a signal, a soft detector adapted for calculating first soft information about each bit of the signal and sending the first soft information to a soft decoder, and the soft decoder positioned subsequent to the soft detector, the soft decoder being adapted for calculating second soft information about each bit of the signal and sending the second soft information to the soft detector, wherein the precoded data includes a characteristic of being passed through at least one precoder prior to being written to the magnetic tape medium, and wherein the soft detector provides automatic compensation for the precoded data. Other systems, methods, and computer program products for reading data using an adaptive soft-output detector are described according to more embodiments.
摘要翻译：根据一个实施例，数据存储系统包括用于从磁带介质读取预编码数据以产生信号的磁带通道，软检测器，适于计算关于信号的每个位的第一软信息，并将第一软信息发送到软解码器和位于软检测器之后的软解码器，软解码器适于计算关于信号的每个位的第二软信息，并将第二软信息发送给软检测器，其中预编码数据包括在写入磁带介质之前通过至少一个预编码器，并且其中软检测器为预编码数据提供自动补偿。根据更多实施例描述了使用自适应软输出检测器读取数据的其它系统，方法和计算机程序产品。

6. 发明授权

US08670199B2 Data-dependent noise-predictive maximum likelihood detection (DD-NPML) for magnetic recording 有权
标题翻译：用于磁记录的数据相关噪声预测最大似然检测（DD-NPML）
公开(公告)号：US08670199B2
公开(公告)日：2014-03-11
申请号：US12753586
申请日：2010-04-02
申请人： Katherine T. Blinick , Evangelos S. Eleftheriou , Robert A. Hutchins , Sedat Oelcer
发明人： Katherine T. Blinick , Evangelos S. Eleftheriou , Robert A. Hutchins , Sedat Oelcer
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10287 , G11B2220/90
摘要： In one embodiment, a method includes applying one or more whitening filters to an input stream of digitized samples from a magnetic data channel to produce a filtered sequence, performing one or more branch metric calculations to the filtered sequence to produce a branch metric, and applying a multi-state data-dependent noise-predictive maximum likelihood (DD-NPML) detector to the branch metric to produce an output stream. In another embodiment, a multi-channel data storage system includes a head for reading data from a storage medium, logic for applying one or more whitening filters to an input stream of digitized samples from a magnetic data channel to produce a filtered sequence, logic for performing one or more branch metric calculations to the filtered sequence to produce a branch metric, and logic for applying a multi-state DD-NPML detector to the branch metric to produce an output stream. Other systems and methods are described as well.
摘要翻译：在一个实施例中，一种方法包括将一个或多个白化滤波器应用于来自磁数据信道的数字化样本的输入流，以产生经滤波的序列，对经滤波的序列执行一个或多个分支度量计算以产生分支度量，以及应用用于产生输出流的分支度量的多状态数据相关噪声预测最大似然（DD-NPML）检测器。在另一个实施例中，多通道数据存储系统包括用于从存储介质读取数据的头，用于将一个或多个白化滤波器应用于来自磁数据通道的数字化采样的输入流以产生滤波序列的逻辑，用于对经滤波的序列执行一个或多个分支度量计算以产生分支度量，以及将多状态DD-NPML检测器应用于分支度量以产生输出流的逻辑。还描述了其他系统和方法。

7. 发明授权

US08599973B2 Detection of synchronization mark from output of matched filter upstream of Viterbi detector 有权
标题翻译：维特比检测器上游匹配滤波器输出同步标记检测
公开(公告)号：US08599973B2
公开(公告)日：2013-12-03
申请号：US12150822
申请日：2008-04-30
申请人： Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Todd Carter Truax
发明人： Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Todd Carter Truax
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： G11B20/10046 , G11B20/10009 , G11B20/10027 , G11B20/10055 , G11B20/10212 , G11B20/10287 , G11B20/10296 , G11B20/1217 , G11B20/14 , G11B2020/1287 , G11B2220/2516 , H03M13/41 , H03M13/6343
摘要： Embodiments of the present invention relate to the detection of synchronization marks in data storage and retrieval. According to one embodiment, synchronization marks are detected from the output of a matched filter, upstream of the Viterbi detector. This approach avoids the delay associated with the latency of the Viterbi output, thereby allowing time to align parity framing and to properly start the time-varying trellis. Certain embodiments disclose 34- and 20-bit primary synchronization marks located at the beginning of a data region. Other embodiments disclose 16-, 20-, and 24-bit embedded synchronization marks located within a data region.
摘要翻译：本发明的实施例涉及数据存储和检索中的同步标记的检测。根据一个实施例，从维特比检测器上游的匹配滤波器的输出检测同步标记。这种方法避免了与维特比输出的等待时间相关联的延迟，从而允许时间对齐奇偶校验框架并正确启动时变网格。某些实施例公开了位于数据区开始处的34位和20位主同步标记。其他实施例公开了位于数据区域内的16位，20位和24位嵌入式同步标记。

8. 发明申请

US20120265488A1 Systems and Methods for Reliability Assisted Noise Predictive Filtering 有权
标题翻译：可靠性辅助噪声预测滤波系统与方法
公开(公告)号：US20120265488A1
公开(公告)日：2012-10-18
申请号：US13088178
申请日：2011-04-15
申请人： Lingyan Sun , Hongwei Song , Jingfeng Liu
发明人： Lingyan Sun , Hongwei Song , Jingfeng Liu
IPC分类号： G06F19/00 , G11B5/09
CPC分类号： G11B20/10287 , G11B20/10009 , G11B20/10296 , G11B20/10509
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes: a data detector circuit, a calibration circuit, and an enable circuit. The data detector circuit is operable to apply a data detection algorithm to a data input to yield a detected output based at least in part on control values. The calibration circuit operable to update the control values based at least in part on the data input, the detected output, and a calibration circuit enable. The calibration circuit enable is generated by the enable circuit based at least in part on the detected output.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。作为示例，公开了一种数据处理电路，其包括：数据检测器电路，校准电路和使能电路。数据检测器电路可操作以将数据检测算法应用于数据输入，以至少部分地基于控制值产生检测到的输出。校准电路可操作以至少部分地基于数据输入，检测到的输出和校准电路使能来更新控制值。校准电路使能由至少部分地基于所检测的输出的使能电路产生。

9. 发明授权

US08149527B2 Systems and methods for reducing attenuation of information derived from a defective medium 有权
标题翻译：用于减少从有缺陷介质得到的信息衰减的系统和方法
公开(公告)号：US08149527B2
公开(公告)日：2012-04-03
申请号：US12111889
申请日：2008-04-29
申请人： Weijun Tan , Hao Zhong , Yuan Xing Lee , Richard Rauschmayer , Shaohua Yang , Harley Burger , Kelly Fitzpatrick , Changyou Xu
发明人： Weijun Tan , Hao Zhong , Yuan Xing Lee , Richard Rauschmayer , Shaohua Yang , Harley Burger , Kelly Fitzpatrick , Changyou Xu
IPC分类号： G11B5/02 , G11B27/36 , G11B5/09
CPC分类号： G11B20/18 , G11B20/10009 , G11B20/10287 , G11B20/10296 , H03M13/3905 , H03M13/3961 , H03M13/4146 , H03M13/6343 , H03M13/658
摘要： Various embodiments of the present invention provide systems and methods for data regeneration. For example, a method for data regeneration is disclosed that includes receiving a data input derived from a medium, determining a media defect corresponding to the data input, and determining an attenuation factor associated with the defective medium. Based at least in part on the determination that the medium is defective, amplifying the data input by a derivative of the attenuation factor to regenerate the data.
摘要翻译：本发明的各种实施例提供了用于数据再生的系统和方法。例如，公开了一种用于数据再生的方法，包括接收从介质导出的数据输入，确定与数据输入相对应的介质缺陷，以及确定与缺陷介质相关联的衰减因子。至少部分地基于介质有缺陷的确定，通过衰减因子的导数来放大输入的数据以再生数据。

10. 发明授权

US07859971B2 Directory hologram forming an anchor location of a pattern of stored holograms 失效
标题翻译：目录全息图形成存储的全息图的图案的锚定位置
公开(公告)号：US07859971B2
公开(公告)日：2010-12-28
申请号：US11771179
申请日：2007-06-29
申请人： Allen Keith Bates , Nils Haustein , Craig Anthony Klein , Daniel James Winarski
发明人： Allen Keith Bates , Nils Haustein , Craig Anthony Klein , Daniel James Winarski
IPC分类号： G11B7/0065
CPC分类号： G11B7/0065 , G11B7/00772 , G11B7/00781 , G11B20/10009 , G11B20/10287 , G11B27/034 , G11B27/329 , G11B2220/2504
摘要： A method writes at least a group of holograms in a predetermined pattern in the holographic storage medium, and writes a directory hologram which relates to the holograms of the group to form an anchor location of the predetermined pattern. Further, a directory comprising the directory hologram is stored in a memory, and a read operation of at least one hologram of a group is initiated with an access for the directory hologram of the group at the anchor location; reading the accessed hologram, employing a matched filter to cross-correlate the read accessed hologram with an ideal version of the directory hologram derived from the directory stored in the memory; and determining whether the read accessed hologram is the directory hologram of the group.
摘要翻译：一种方法以全息存储介质中的预定图案写入至少一组全息图，并且写入与组的全息图相关的目录全息图以形成预定图案的锚定位置。此外，包括目录全息图的目录被存储在存储器中，并且通过在锚定位置处的组的目录全息图的访问来启动组的至少一个全息图的读取操作; 读取所访问的全息图，使用匹配滤波器将读取的全息图与从存储在存储器中的目录导出的目录全息图的理想版本进行交叉相关; 并且确定读取的访问全息图是否是该组的目录全息图。

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