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公开(公告)号：US20150279419A1
公开(公告)日：2015-10-01
申请号：US14228749
申请日：2014-03-28
Applicant: Seagate Technology LLC
Inventor： Jon David Trantham , William M. Radich , Jason Gadbois , Barmeshwar Vikramaditya
CPC classification number: G11B20/182 , G11B5/09 , G11B5/607 , G11B20/1816 , G11B20/1889 , G11B2005/0021 , G11B2020/1826
Abstract: Apparatus and method for detecting media defects using a multi-sensor transducer. In some embodiments, a first pattern is written to a first track on a rotatable storage media and a second pattern is written to a second track on the media. A first read sensor of a multi-sensor transducer senses the first pattern from the first track and a second read sensor of the multi-sensor transducer concurrently senses the second pattern from the second track. At least one storage media defect is detected responsive to the sensed first and second patterns.
Abstract translation: 使用多传感器传感器检测介质缺陷的装置和方法。 在一些实施例中，将第一图案写入可旋转存储介质上的第一轨道，并将第二图案写入到介质上的第二轨道。 多传感器换能器的第一读取传感器感测来自第一轨道的第一图案，并且多传感器换能器的第二读取传感器同时从第二轨迹感测第二图案。 响应于所感测的第一和第二图案来检测至少一个存储介质缺陷。
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公开(公告)号：US08885277B1
公开(公告)日：2014-11-11
申请号：US14143856
申请日：2013-12-30
Applicant: Seagate Technology LLC
Inventor： Fatih Erden , Barmeshwar Vikramaditya , Deepak Sridhara , William Radich
IPC: G11B5/09
CPC classification number: G11B5/4886 , G11B5/012 , G11B20/1403 , G11B20/1833 , G11B2005/0005
Abstract: Technologies are described herein for implementing modulation coding schemes for TDMR. A data sequence is received to be stored on a first data track of a recording media. The first data sequence is encoded into a first codeword sequence using a modulation coding scheme, and the first codeword sequence is written to the first data track of the recording media. Subsequently, a second data sequence is received to be stored on a second data track of the recording media, the second data track being adjacent to the first data track. A second codeword sequence is generated for the second data sequence based on the first codeword sequence on the first data track, and the second codeword sequence is written to the second data track of the recording media.
Abstract translation: 这里描述了用于实现TDMR的调制编码方案的技术。 接收数据序列以存储在记录介质的第一数据轨道上。 使用调制编码方案将第一数据序列编码成第一码字序列，并将第一码字序列写入记录介质的第一数据轨道。 随后，接收第二数据序列以存储在记录介质的第二数据轨道上，第二数据轨道与第一数据轨道相邻。 基于第一数据磁道上的第一码字序列为第二数据序列生成第二码字序列，并且将第二码字序列写入记录介质的第二数据轨道。
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公开(公告)号：US09305596B2
公开(公告)日：2016-04-05
申请号：US14228749
申请日：2014-03-28
Applicant: Seagate Technology LLC
Inventor： Jon David Trantham , William M. Radich , Jason Gadbois , Barmeshwar Vikramaditya
CPC classification number: G11B20/182 , G11B5/09 , G11B5/607 , G11B20/1816 , G11B20/1889 , G11B2005/0021 , G11B2020/1826
Abstract: Apparatus and method for detecting media defects using a multi-sensor transducer. In some embodiments, a first pattern is written to a first track on a rotatable storage media and a second pattern is written to a second track on the media. A first read sensor of a multi-sensor transducer senses the first pattern from the first track and a second read sensor of the multi-sensor transducer concurrently senses the second pattern from the second track. At least one storage media defect is detected responsive to the sensed first and second patterns.
Abstract translation: 使用多传感器传感器检测介质缺陷的装置和方法。 在一些实施例中，将第一图案写入可旋转存储介质上的第一轨道，并将第二图案写入到介质上的第二轨道。 多传感器换能器的第一读取传感器感测来自第一轨道的第一图案，并且多传感器换能器的第二读取传感器同时从第二轨迹感测第二图案。 响应于所感测的第一和第二图案来检测至少一个存储介质缺陷。
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公开(公告)号：US08972631B2
公开(公告)日：2015-03-03
申请号：US13843388
申请日：2013-03-15
Applicant: Seagate Technology LLC
Inventor： Jimmie Ray Shaver , Barmeshwar Vikramaditya
CPC classification number: G06F13/1689
Abstract: The defined architecture allows for format-efficient data storage on bit-patterned media, while allowing for typical variations in the drive, such as reader to writer gap variations. The defined BPM architecture relaxes some timing requirements on real-time signaling from the formatter to the channel, while enabling bit-accurate alignment between data accesses and the media.
Abstract translation: 定义的架构允许在位图形媒体上进行格式有效的数据存储，同时允许驱动器中的典型变化，例如读取器到写入器间隙变化。 定义的BPM架构放松了从格式器到通道的实时信令的一些定时要求，同时实现数据访问和媒体之间的位精确对齐。
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公开(公告)号：US20140281061A1
公开(公告)日：2014-09-18
申请号：US13843388
申请日：2013-03-15
Applicant: Seagate Technology LLC
Inventor： Jimmie Ray Shaver , Barmeshwar Vikramaditya
IPC: G06F13/16
CPC classification number: G06F13/1689
Abstract: The defined architecture allows for format-efficient data storage on bit-patterned media, while allowing for typical variations in the drive, such as reader to writer gap variations. The defined BPM architecture relaxes some timing requirements on real-time signaling from the formatter to the channel, while enabling bit-accurate alignment between data accesses and the media.
Abstract translation: 定义的架构允许在位图形媒体上进行格式有效的数据存储，同时允许驱动器中的典型变化，例如读取器到写入器间隙变化。 定义的BPM架构放松了从格式器到通道的实时信令的一些定时要求，同时实现数据访问和媒体之间的位精确对齐。
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Patent Agency Ranking
公开(公告)号：US20140268396A1
公开(公告)日：2014-09-18
申请号：US13842851
申请日：2013-03-15
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Jimmie Ray Shaver , Barmeshwar Vikramaditya
IPC: G11B20/12
CPC classification number: G11B20/1252 , G11B20/1217 , G11B2020/1232
Abstract: A data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format uses an intersector gap that is dimensioned relative to a physical dimension of a transducer. Further described is a data storage medium comprising transducer overhead, such as an intersector gap, interleaved with fragment overhead. Also described is a storage medium comprising intersector gaps that each include a write splice and extra symbols.
Abstract translation: 允许格式高效的数据存储的数据格式，特别是位图形媒体。 数据格式使用相对于换能器的物理尺寸确定尺寸的跨接口间隙。 进一步描述的是包括传感器开销的数据存储介质，诸如跨区间隙，与片断开销交错。 还描述了一种存储介质，其包括每个包括写接头和额外符号的跨部分间隙。
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公开(公告)号：US09768988B1
公开(公告)日：2017-09-19
申请号：US13722578
申请日：2012-12-20
Applicant: Seagate Technology LLC
Inventor： Puskal Prasad Pokharel , Mustafa Can Ozturk , Barmeshwar Vikramaditya
CPC classification number: H04L25/03968 , H04L25/03133 , H04L25/03254
Abstract: An apparatus and associated methodology providing read channel circuitry having a signal equalizer that sends an equalized signal to a bit detector. The read channel circuitry is capable of sampling values of the equalized signal to identify a bit transition from among a predefined plurality of different bit transitions. The apparatus may have channel optimization (CO) logic that, based on the input signal and the sampling of the equalized signal, defines first values for a programmable parameter of the bit detector that substantially maximizes vector separations among vectors of waveform target samples corresponding to the predefined plurality of different bit transitions, while the CO logic also defines second values for a programmable parameter of the equalizer that substantially minimizes the mean squared separation of the equalized signal segment for each bit transition from the waveform target corresponding to that bit transition.
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公开(公告)号：US09178531B1
公开(公告)日：2015-11-03
申请号：US13869191
申请日：2013-04-24
Applicant: Seagate Technology LLC
Abstract: The disclosure is related to systems and methods for achieving improved servo Gray code error detection and correction. A device may include a circuit configured to read servo data that is encoded using a Gray code encoding scheme to produce servo Gray code, read one or more Check bits associated with the servo Gray code, determine whether a read or write head is positioned over a target data track based on the servo Gray code and the one or more Check bits, and execute a read or write operation when the read or write head is positioned over the target data track.
Abstract translation: 本公开涉及用于实现改进的伺服格雷码错误检测和校正的系统和方法。 设备可以包括被配置为读取使用格雷码编码方案编码以产生伺服格雷码的伺服数据的电路，读取与伺服格雷码相关联的一个或多个检查位，确定读或写头是否位于 基于伺服格雷码和一个或多个检查位的目标数据轨迹，并且当读或写头位于目标数据轨道上方时执行读或写操作。
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9.发明授权Requirement relaxation for multiple readers in presence of large skew angle range 有权存在大偏斜角度范围的多位读者需要放松公开(公告)号：US09123384B2
公开(公告)日：2015-09-01
申请号：US14665150
申请日：2015-03-23
Applicant: Seagate Technology LLC
Inventor： Mehmet Fatih Erden , Scott Warmka , Barmeshwar Vikramaditya , Ralph William Cross
CPC classification number: G11B20/10388 , G11B5/012 , G11B5/09 , G11B20/10305
Abstract: A readback signal from a first reader and a readback signal from a second reader are received, the first reader and the second reader configured to read two-dimensional data from at least one track of a recording media. A quality metric of the second reader is measured based on the readback signal. It is determined if the quality metric for the second reader is above a threshold. If the quality metric is above the threshold, the first reader and the second reader are used to read the data.
Abstract translation: 接收来自第一读取器的回读信号和来自第二读取器的回读信号，第一读取器和第二读取器被配置为从记录介质的至少一个轨道读取二维数据。 基于回读信号测量第二读取器的质量度量。 确定第二读取器的质量度量是否高于阈值。 如果质量度量高于阈值，则使用第一读取器和第二读取器来读取数据。
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公开(公告)号：US20140268395A1
公开(公告)日：2014-09-18
申请号：US13842388
申请日：2013-03-15
Applicant: Seagate Technology LLC
Inventor： Jimmie Ray Shaver , Barmeshwar Vikramaditya
IPC: G11B20/12
CPC classification number: G11B20/1252 , G11B20/1217 , G11B2020/1232
Abstract: Data format that allows for format-efficient data storage, particularly on bit-patterned media. The data format allows for variations in the data storage device, such as reader-to-writer gap variations. A medium can also have at least a pair of a synchronization field and a quiet field with a length greater than a length of the synchronization field. These can be implemented in a bit patterned media system.
Abstract translation: 数据格式允许格式高效的数据存储，特别是位图形媒体。 数据格式允许数据存储设备的变化，例如读写器间隙变化。 介质还可以具有长度大于同步字段的长度的至少一对同步字段和安静字段。 这些可以在有点图案化的媒体系统中实现。
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