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1. 发明授权

US08947805B1 Low complexity inter-track interference cancellation receiver for magnetic multiple-input, multiple-output (MIMO) channel 有权
标题翻译：用于磁多输入多输出（MIMO）通道的低复杂度轨道间干扰消除接收机
公开(公告)号：US08947805B1
公开(公告)日：2015-02-03
申请号：US14218036
申请日：2014-03-18
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Travis Roger Oenning , Srinivasan Surendran
IPC分类号： G11B20/10
CPC分类号： G11B20/10296 , G11B20/10046 , G11B20/10055 , G11B20/10268
摘要： A receiver utilizes a plurality of read elements, each generating a read-back signal in response to a data track positioned beneath the read element. The plurality of read-back signals are each provided to at least one space-time interference cancellation filter, which generates a filtered output that maximizes a signal associated with one of the plurality of data tracks. The filtered output is provided to a one-dimensional Viterbi detector, which is configured to generate in response an output representative of a data sequence written to one of the plurality of data tracks.
摘要翻译：接收机利用多个读取元件，每个读取元件响应于位于读取元件下方的数据轨道产生回读信号。多个读回信号各自被提供给至少一个时空干涉消除滤波器，该滤波器产生使与多个数据轨道之一相关联的信号最大化的滤波输出。经滤波的输出被提供给一维维特比检测器，其被配置为响应于产生表示写入多个数据轨道之一的数据序列的输出。

2. 发明申请

US20140201590A1 Disk Drive with Distributed Codeword Blocks 有权
标题翻译：具有分布式代码字块的磁盘驱动器
公开(公告)号：US20140201590A1
公开(公告)日：2014-07-17
申请号：US13875165
申请日：2013-05-01
申请人： HGST NETHERLANDS B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Roger William Wood
IPC分类号： G06F11/10
CPC分类号： H03M13/1102 , G11B20/1217 , G11B20/1833 , H03M13/09 , H03M13/27 , H03M13/373 , H03M13/3761
摘要： Disk drives are described in which blocks of data spanning multiple sectors are encoded into a plurality of codewords which are then divided into segments that are physically separated (distributed) on the disk surface over multiple sectors in a distributed codeword block so that the codewords have an improved worst case SNR in comparison to individual sectors. This results in more even SNR performance for each codeword, which improves the performance for portions of a track which have lower than the average SNR. Embodiments are described in which the distributed codeword blocks span across tracks.
摘要翻译：描述了磁盘驱动器，其中跨越多个扇区的数据块被编码成多个码字，然后这些码字被划分成在分布式码字块中的多个扇区上在磁盘表面上物理地分离（分布）的段，使得码字具有与个别行业相比，改善了最坏情况的信噪比。这导致针对每个码字的更均匀的SNR性能，这提高了具有低于平均SNR的磁道部分的性能。描述了其中分布式码字块跨越轨道的实施例。

3. 发明申请

US20150077875A1 DISK DRIVE WITH DIFFERENT SYNCHRONIZATION FIELDS AND SYNCHRONIZATION MARKS IN THE DATA SECTOR PREAMBLES IN ADJACENT DATA TRACKS 有权
标题翻译：具有不同同步字段的磁盘驱动器和同步数据跟踪中的数据扇区中的同步标记
公开(公告)号：US20150077875A1
公开(公告)日：2015-03-19
申请号：US14031970
申请日：2013-09-19
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Srinivasan Surendran
IPC分类号： G11B20/12
CPC分类号： G11B20/1217 , G11B2020/1232
摘要： A hard disk drive has disks with data sector preambles that allow for inter-track interference. The same data sector preamble is used for all data sectors in a track but the preamble in each track is different from the preamble in radially adjacent tracks. In a first embodiment each preamble includes a synchronization field (SF) and synchronization mark (SM) that are the same in each track but different from the SF and SM in radially adjacent tracks. Only two unique SFs and two unique SMs are required, with the two SFs and two SMs alternating in radially adjacent tracks. In a second embodiment the preambles are “integrated”, meaning that the preamble is a sequence of bits that does not include separate dedicated fields, like SF and SM. The preamble bit sequences are decoded using matched filters to provide bit synchronization and start-of-data information.
摘要翻译：硬盘驱动器具有带数据扇区前导码的磁盘，允许进行轨道间干扰。对于轨道中的所有数据扇区使用相同的数据扇区前同步码，但是每个轨道中的前导码与径向相邻轨道中的前同步码不同。在第一实施例中，每个前导码包括在每个轨道中相同但与径向相邻轨道中的SF和SM不同的同步字段（SF）和同步标记（SM）。只需要两个独特的SF和两个独特的SM，两个SF和两个SM在径向相邻的轨道中交替。在第二实施例中，前导码是“集成的”，这意味着前同步码是不包括单独的专用字段（如SF和SM）的比特序列。使用匹配滤波器解码前导码比特序列，以提供比特同步和数据开始信息。

4. 发明授权

US08988807B1 Disk drive with different data sector integrated preambles in adjacent data tracks 有权
标题翻译：具有不同数据扇区的磁盘驱动器在相邻数据轨道中集成前导码
公开(公告)号：US08988807B1
公开(公告)日：2015-03-24
申请号：US14031989
申请日：2013-09-19
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Srinivasan Surendran
IPC分类号： G11B5/09 , G11B20/12
CPC分类号： G11B20/1217 , G11B2020/1232
摘要： A hard disk drive has disks with data sector preambles that allow for inter-track interference. The same data sector preamble is used for all data sectors in a track but the preamble in each track is different from the preamble in radially adjacent tracks. In a first embodiment each preamble includes a synchronization field (SF) and synchronization mark (SM) that are the same in each track but different from the SF and SM in radially adjacent tracks. Only two unique SFs and two unique SMs are required, with the two SFs and two SMs alternating in radially adjacent tracks. In a second embodiment the preambles are “integrated”, meaning that the preamble is a sequence of bits that does not include separate dedicated fields, like SF and SM. The preamble bit sequences are decoded using matched filters to provide bit synchronization and start-of-data information.
摘要翻译：硬盘驱动器具有带数据扇区前导码的磁盘，允许进行轨道间干扰。对于轨道中的所有数据扇区使用相同的数据扇区前同步码，但是每个轨道中的前导码与径向相邻轨道中的前同步码不同。在第一实施例中，每个前导码包括在每个轨道中相同但与径向相邻轨道中的SF和SM不同的同步场（SF）和同步标记（SM）。只需要两个独特的SF和两个独特的SM，两个SF和两个SM在径向相邻的轨道中交替。在第二实施例中，前导码是“集成的”，这意味着前同步码是不包括单独的专用字段（如SF和SM）的比特序列。使用匹配滤波器解码前导码比特序列，以提供比特同步和数据开始信息。

5. 发明授权

US08982491B1 Disk drive with different synchronization fields and synchronization marks in the data sector preambles in adjacent data tracks 有权
标题翻译：具有不同同步字段的磁盘驱动器和数据扇区中的同步标记在相邻数据轨道中前导
公开(公告)号：US08982491B1
公开(公告)日：2015-03-17
申请号：US14031970
申请日：2013-09-19
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Srinivasan Surendran
IPC分类号： G11B5/09 , G11B20/12
CPC分类号： G11B20/1217 , G11B2020/1232
摘要： A hard disk drive has disks with data sector preambles that allow for inter-track interference. The same data sector preamble is used for all data sectors in a track but the preamble in each track is different from the preamble in radially adjacent tracks. In a first embodiment each preamble includes a synchronization field (SF) and synchronization mark (SM) that are the same in each track but different from the SF and SM in radially adjacent tracks. Only two unique SFs and two unique SMs are required, with the two SFs and two SMs alternating in radially adjacent tracks. In a second embodiment the preambles are “integrated”, meaning that the preamble is a sequence of bits that does not include separate dedicated fields, like SF and SM. The preamble bit sequences are decoded using matched filters to provide bit synchronization and start-of-data information.
摘要翻译：硬盘驱动器具有带数据扇区前导码的磁盘，允许进行轨道间干扰。对于轨道中的所有数据扇区使用相同的数据扇区前同步码，但是每个轨道中的前导码与径向相邻轨道中的前同步码不同。在第一实施例中，每个前导码包括在每个轨道中相同但与径向相邻轨道中的SF和SM不同的同步字段（SF）和同步标记（SM）。只需要两个独特的SF和两个独特的SM，两个SF和两个SM在径向相邻的轨道中交替。在第二实施例中，前导码是“集成的”，这意味着前同步码是不包括单独的专用字段（如SF和SM）的比特序列。使用匹配滤波器解码前导码比特序列，以提供比特同步和数据开始信息。

6. 发明授权

US09059737B2 Disk drive with distributed codeword blocks 有权
标题翻译：具有分布式码字块的磁盘驱动器
公开(公告)号：US09059737B2
公开(公告)日：2015-06-16
申请号：US13875165
申请日：2013-05-01
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Roger William Wood
IPC分类号： H03M13/00 , H03M13/11 , G11B20/12 , G11B20/18 , H03M13/27 , H03M13/37 , H03M13/09
CPC分类号： H03M13/1102 , G11B20/1217 , G11B20/1833 , H03M13/09 , H03M13/27 , H03M13/373 , H03M13/3761
摘要： Disk drives are described in which blocks of data spanning multiple sectors are encoded into a plurality of codewords which are then divided into segments that are physically separated (distributed) on the disk surface over multiple sectors in a distributed codeword block so that the codewords have an improved worst case SNR in comparison to individual sectors. This results in more even SNR performance for each codeword, which improves the performance for portions of a track which have lower than the average SNR. Embodiments are described in which the distributed codeword blocks span across tracks.
摘要翻译：描述了磁盘驱动器，其中跨越多个扇区的数据块被编码成多个码字，然后这些码字被划分成在分布式码字块中的多个扇区上在磁盘表面上物理地分离（分布）的段，使得码字具有与个别行业相比，改善了最坏情况的信噪比。这导致针对每个码字的更均匀的SNR性能，这提高了具有低于平均SNR的磁道部分的性能。描述了其中分布式码字块跨越轨道的实施例。

7. 发明申请

US20150077876A1 DISK DRIVE WITH DIFFERENT DATA SECTOR INTEGRATED PREAMBLES IN ADJACENT DATA TRACKS 有权
标题翻译：磁盘驱动器中不同的数据区域在相邻数据轨道中的集成前缀
公开(公告)号：US20150077876A1
公开(公告)日：2015-03-19
申请号：US14031989
申请日：2013-09-19
申请人： HGST Netherlands B.V.
发明人： Jonathan Darrel Coker , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Srinivasan Surendran
IPC分类号： G11B20/12
CPC分类号： G11B20/1217 , G11B2020/1232
摘要： A hard disk drive has disks with data sector preambles that allow for inter-track interference. The same data sector preamble is used for all data sectors in a track but the preamble in each track is different from the preamble in radially adjacent tracks. In a first embodiment each preamble includes a synchronization field (SF) and synchronization mark (SM) that are the same in each track but different from the SF and SM in radially adjacent tracks. Only two unique SFs and two unique SMs are required, with the two SFs and two SMs alternating in radially adjacent tracks. In a second embodiment the preambles are “integrated”, meaning that the preamble is a sequence of bits that does not include separate dedicated fields, like SF and SM. The preamble bit sequences are decoded using matched filters to provide bit synchronization and start-of-data information.
摘要翻译：硬盘驱动器具有带数据扇区前导码的磁盘，允许进行轨道间干扰。对于轨道中的所有数据扇区使用相同的数据扇区前同步码，但是每个轨道中的前导码与径向相邻轨道中的前同步码不同。在第一实施例中，每个前导码包括在每个轨道中相同但与径向相邻轨道中的SF和SM不同的同步场（SF）和同步标记（SM）。只需要两个独特的SF和两个独特的SM，两个SF和两个SM在径向相邻的轨道中交替。在第二实施例中，前导码是“集成的”，这意味着前同步码是不包括单独的专用字段（如SF和SM）的比特序列。使用匹配滤波器解码前导码比特序列，以提供比特同步和数据开始信息。

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