专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10554221B2 Data storage device encoding and interleaving codewords to improve trellis sequence detection 有权
公开(公告)号：US10554221B2
公开(公告)日：2020-02-04
申请号：US16110493
申请日：2018-08-23
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen
IPC分类号： H03M13/00 , H03M13/11 , H03M13/27 , G11B5/596 , H03M13/35 , G11B20/18
摘要： A data storage device is disclosed comprising a storage medium. First data is encoded into a first codeword comprising a plurality of i-bit symbols, and second data is encoded into a second codeword comprising a plurality of j-bit symbols, wherein i is different than j and a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are symbol interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

2. 发明授权

US10063257B1 Data storage device encoding and interleaving codewords to improve trellis sequence detection 有权
公开(公告)号：US10063257B1
公开(公告)日：2018-08-28
申请号：US15154165
申请日：2016-05-13
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen
IPC分类号： G11C29/00 , H03M13/11 , H03M13/00 , H03M13/27
CPC分类号： H03M13/1111 , G11B5/59616 , G11B2020/1863 , H03M13/1102 , H03M13/27 , H03M13/2742 , H03M13/2757 , H03M13/356 , H03M13/6325
摘要： A data storage device is disclosed comprising a storage medium. First data is encoded into a first codeword comprising a plurality of i-bit symbols, and second data is encoded into a second codeword comprising a plurality of j-bit symbols, wherein i is different than j and a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are symbol interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

3. 发明申请

US20190081642A1 DATA STORAGE DEVICE ENCODING AND INTERLEAVING CODEWORDS TO IMPROVE TRELLIS SEQUENCE DETECTION 审中-公开
公开(公告)号：US20190081642A1
公开(公告)日：2019-03-14
申请号：US16105689
申请日：2018-08-20
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen , Anantha Raman Krishnan
IPC分类号： H03M13/29 , H03M13/11 , H03M13/27 , H03M13/41 , H03M13/25 , G11B5/596 , H03M13/35 , H03M13/00 , G11B20/18
CPC分类号： H03M13/2906 , G11B5/59616 , G11B2020/1863 , H03M13/1102 , H03M13/13 , H03M13/256 , H03M13/27 , H03M13/2742 , H03M13/2757 , H03M13/2792 , H03M13/2957 , H03M13/31 , H03M13/356 , H03M13/4138 , H03M13/6325 , H03M13/6513 , H03M13/6516
摘要： A data storage device is disclosed comprising a storage medium. Input data is encoded according to at least one channel code constraint to generate first data and second data. The first data is encoded into a first codeword, and the second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

4. 发明授权

US10056920B1 Data storage device encoding and interleaving codewords to improve trellis sequence detection 有权
公开(公告)号：US10056920B1
公开(公告)日：2018-08-21
申请号：US15157289
申请日：2016-05-17
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen , Anantha Raman Krishnan
IPC分类号： G11C29/00 , H03M13/29 , H03M13/27 , H03M13/41 , H03M13/25 , H03M13/11
CPC分类号： H03M13/2906 , G11B5/59616 , G11B2020/1863 , H03M13/1102 , H03M13/13 , H03M13/256 , H03M13/27 , H03M13/2742 , H03M13/2757 , H03M13/2792 , H03M13/2957 , H03M13/31 , H03M13/356 , H03M13/4138 , H03M13/6325 , H03M13/6513 , H03M13/6516
摘要： A data storage device is disclosed comprising a storage medium. Input data is encoded according to at least one channel code constraint to generate first data and second data. The first data is encoded into a first codeword, and the second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

5. 发明授权

US09058826B1 Data storage device detecting free fall condition from disk speed variations 有权
标题翻译：数据存储装置从磁盘速度变化检测自由落体状态
公开(公告)号：US09058826B1
公开(公告)日：2015-06-16
申请号：US14194059
申请日：2014-02-28
申请人： Western Digital Technologies, Inc.
发明人： Wei Guo , Jianguo Zhou , Yiming Chen , Guoxiao Guo , Jie Yu
IPC分类号： G11B21/02 , G11B5/55 , G11B20/14
CPC分类号： G11B19/043 , G11B20/18 , G11B21/12
摘要： A data storage device is disclosed comprising a disk comprising data, and a head actuated over the disk. A timing signal is generated by reading the data from the disk, and a frequency generator is adjusted based on the timing signal to generate a disk locked clock substantially synchronized to a rotation speed of the disk. A free fall condition is detected based on the timing signal, and when the free fall condition is detected the head is parked.
摘要翻译：公开了一种数据存储装置，其包括包含数据的磁盘和在磁盘上启动的磁头。通过从盘读取数据来产生定时信号，并且基于定时信号调整频率发生器，以产生基本上与盘的转速同步的盘锁定时钟。基于定时信号检测到自由落体状态，并且当检测到自由落体状态时，头被停放。

6. 发明授权

US09013821B1 Data storage device employing one-dimensional and two-dimensional channels 有权
标题翻译：数据存储设备采用一维和二维通道
公开(公告)号：US09013821B1
公开(公告)日：2015-04-21
申请号：US14301326
申请日：2014-06-10
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen
IPC分类号： G11B5/035 , G11B20/10
CPC分类号： G11B20/10046
摘要： A data storage device is disclosed comprising a disk comprising a plurality of data tracks. A first data track is read to generate a first read signal that is sampled to generate first signal samples. A second data track adjacent the first data track is read to generate a second read signal that is sampled to generate second signal samples. The first signal samples and the second signal samples are processed by a first two-dimensional (2D) to one-dimensional (1D) equalizer to generate a first 1D sequence of equalized samples, and by a 2D-to-2D equalizer to generate a 2D sequence of equalized samples. The first 1D sequence of equalized samples are processed using a first 1D detector to detect a first estimated data sequence, and the 2D sequence of equalized samples are processed using a 2D detector to detect a second estimated data sequence.
摘要翻译：公开了一种包括包括多个数据轨道的盘的数据存储设备。读取第一数据磁道以产生被采样以产生第一信号采样的第一读取信号。读取与第一数据磁道相邻的第二数据磁道，以产生被采样以产生第二信号采样的第二读信号。第一信号样本和第二信号样本由第一二维（2D）到一维（1D）均衡器处理，以产生均衡样本的第一1D序列，并通过2D到2D均衡器生成均匀样品的2D序列。使用第一1D检测器处理第一个1D序列的均衡样本以检测第一估计数据序列，并且使用2D检测器处理均衡样本的2D序列以检测第二估计数据序列。

7. 发明授权

US09761273B1 Data storage device encoding and interleaving codewords to improve trellis sequence detection 有权
公开(公告)号：US09761273B1
公开(公告)日：2017-09-12
申请号：US14930898
申请日：2015-11-03
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen
IPC分类号： G11C29/00 , G11B20/18 , H03M13/27 , G11B5/09
CPC分类号： G11B20/1833 , G11B5/09 , G11B5/59616 , G11B20/1866 , G11B2020/185 , G11B2020/1859 , G11B2020/1863 , H03M13/1102 , H03M13/27 , H03M13/2742 , H03M13/2757 , H03M13/356 , H03M13/6325
摘要： A data storage device is disclosed comprising a storage medium. First data is encoded into a first codeword, and second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword that is written to the storage medium.

8. 发明授权

US09183877B1 Data storage device comprising two-dimensional data dependent noise whitening filters for two-dimensional recording 有权
标题翻译：数据存储装置包括用于二维记录的二维数据相关噪声白化滤波器
公开(公告)号：US09183877B1
公开(公告)日：2015-11-10
申请号：US14664570
申请日：2015-03-20
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen , Ning Zheng
IPC分类号： G11B5/035 , G11B20/10
CPC分类号： G11B20/10268 , G11B5/012 , G11B5/4886 , G11B20/10009 , G11B20/10046 , G11B20/10481
摘要： A data storage device is disclosed wherein a first 2D data dependent noise whitening (DDNW) filter is configured to perform 2D DDNW of first and second 2D equalized samples to generate first 2D noise whitened samples. A second 2D DDNW filter is configured to perform 2D DDNW of the first and second 2D equalized samples to generate second 2D noise whitened samples. A 2D sequence detector is configured to detect a first data sequence recorded in a first data track from the first and second 2D noise whitened samples and to detect a second data sequence recorded in a second data track from the first and second 2D noise whitened samples.
摘要翻译：公开了一种数据存储设备，其中第一2D数据相关噪声白化（DDNW）滤波器被配置为执行第一和第二2D均衡样本的2D DDNW，以产生第一2D噪声白化样本。第二2D DDNW滤波器被配置为执行第一和第二2D均衡采样的2D DDNW以产生第二2D噪声白化样本。 2D序列检测器被配置为检测从第一和第二2D噪声白化样本记录在第一数据轨道中的第一数据序列，并且从第一和第二2D噪声白化样本检测记录在第二数据轨道中的第二数据序列。

9. 发明授权

US10554225B2 Data storage device encoding and interleaving codewords to improve trellis sequence detection 有权
公开(公告)号：US10554225B2
公开(公告)日：2020-02-04
申请号：US16105689
申请日：2018-08-20
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen , Anantha Raman Krishnan
IPC分类号： H03M13/00 , H03M13/29 , H03M13/27 , H03M13/41 , H03M13/25 , H03M13/11 , G11B5/596 , H03M13/35 , H03M13/13 , H03M13/31 , G11B20/18
摘要： A data storage device is disclosed comprising a storage medium. Input data is encoded according to at least one channel code constraint to generate first data and second data. The first data is encoded into a first codeword, and the second data is encoded into a second codeword, wherein a first code rate of the first codeword is less than a second code rate of the second codeword. The first codeword and the second codeword are interleaved to generate an interleaved codeword, and the interleaved codeword is written to the storage medium.

10. 发明授权

US09047205B1 Data storage device employing orthogonal equalization and sequence detection to compensate for two-dimensional intersymbol interference 有权
标题翻译：数据存储设备采用正交均衡和序列检测来补偿二维码间干扰
公开(公告)号：US09047205B1
公开(公告)日：2015-06-02
申请号：US13968323
申请日：2013-08-15
申请人： Western Digital Technologies, Inc.
发明人： Yiming Chen , Anantha Raman Krishnan
IPC分类号： H03M13/41 , G06F11/10 , G06F12/00
CPC分类号： G06F12/00 , G11B20/10046 , G11B20/10268 , H03M13/1111 , H03M13/373 , H03M13/41
摘要： A data storage device is disclosed comprising a non-volatile memory (NVM), wherein data is read from the NVM to generate a two dimension matrix of signal samples, including a first dimension and a second dimension. The matrix of signal samples is first equalized to reduce intersymbol interference (ISI) in the first dimension to generate second dimension signal samples, and second equalized to reduce ISI in the second dimension to generate first dimension signal samples. A first data sequence is detected in response to the first dimension signal samples, and a second data sequence is detected in response to the second dimension signal samples.
摘要翻译：公开了一种数据存储设备，其包括非易失性存储器（NVM），其中从NVM读取数据以生成包括第一维度和第二维度的信号样本的二维矩阵。信号样本的矩阵首先被均衡以减少第一维度中的符号间干扰（ISI），以产生第二维信号样本，并且第二均衡以减少第二维度中的ISI以产生第一维信号样本。响应于第一维度信号样本检测第一数据序列，并且响应于第二维度信号样本检测第二数据序列。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式