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    Read read-only fields while writing
    12.
    发明授权
    Read read-only fields while writing 有权
    在写入时读取只读字段

    公开(公告)号：US09318147B1

    公开(公告)日：2016-04-19

    申请号：US14050447

    申请日：2013-10-10

    Applicant: Seagate Technology LLC

    Inventor： Barmeshwar Vikramaditya ,  Bruce Douglas Buch ,  Timothy Ellis

    IPC: G11B20/10 ,  G11B19/04

    CPC classification number: G11B20/10046 ,  G11B19/04 ,  G11B19/041 ,  G11B20/10009

    Abstract: A circuit may be configured to reduce the amount of space used on a storage device when a transducer having a reader and writer passes from a writable data field to a read-only field by enabling both the reader and writer simultaneously. The circuit can be configured to reduce to a threshold level the noise on a read signal that can occur when the reader is over a read-only field and the writer is over a writable data field, and can ignore the read data when both the writer and reader are enabled simultaneously over a writable data field.

    Abstract translation: 当具有读写器的换能器通过同时使读写器同时从可写数据字段传递到只读字段时，电路可以被配置为减少存储设备上使用的空间量。 该电路可以配置为将读取器超过只读字段并且写入器超过可写数据字段时可能发生的读取信号上的噪声降低到阈值水平，并且当写入器都可以忽略读取数据 并且阅读器在可写数据字段上同时启用。

    DESIGN REQUIREMENT RELAXATION FOR MULTIPLE READERS IN PRESENCE OF LARGE SKEW ANGLE RANGE
    13.
    发明申请
    DESIGN REQUIREMENT RELAXATION FOR MULTIPLE READERS IN PRESENCE OF LARGE SKEW ANGLE RANGE 审中-公开
    设计要求在大角度范围内存在多个读者的放松

    公开(公告)号：US20150194182A1

    公开(公告)日：2015-07-09

    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

    IPC: G11B20/10

    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。

    Unstable reader detection
    15.
    发明授权
    Unstable reader detection 有权
    不稳定的读卡器检测

    公开(公告)号：US09336807B1

    公开(公告)日：2016-05-10

    申请号：US14698587

    申请日：2015-04-28

    Applicant: Seagate Technology LLC

    Inventor： Barmeshwar Vikramaditya ,  Patrick Korkowski

    IPC: G11B21/02 ,  G11B5/596 ,  G11B5/60 ,  G11B20/18

    CPC classification number: G11B5/6029 ,  G11B19/048 ,  G11B20/182

    Abstract: Method and apparatus for detecting unstable read sensors (readers) for data storage systems. In some embodiments, a transducer is supported adjacent a rotating data recording medium having servo data patterns interspersed with calibration test data patterns. A read sensor of the transducer reads the servo and calibration test data patterns while the transducer is maintained at a passive fly height adjacent the medium. A corresponding location on the medium is identified for an error detected during the reading of the servo and calibration test patterns. The servo and calibration test patterns at the location are reread using the read sensor to characterize the read sensor as an unstable reader.

    Abstract translation: 用于检测用于数据存储系统的不稳定读取传感器（读取器）的方法和装置。 在一些实施例中，传感器被支持在具有散布有校准测试数据模式的伺服数据模式的旋转数据记录介质附近。 传感器的读取传感器读取伺服和校准测试数据模式，同时传感器保持在与介质相邻的被动飞行高度。 识别介质上的相应位置，以便在读取伺服和校准测试图案期间检测到错误。 使用读取传感器重新读取位置的伺服和校准测试图案，以将读取的传感器表征为不稳定的读取器。

    Multi-disk writer with individual head positioning
    16.
    发明授权
    Multi-disk writer with individual head positioning 有权
    多磁盘刻录机，具有单独的头定位

    公开(公告)号：US09236074B1

    公开(公告)日：2016-01-12

    申请号：US14605063

    申请日：2015-01-26

    Applicant: Seagate Technology LLC

    Inventor： Michael R. Tiller ,  Barmeshwar Vikramaditya ,  Yongjun Hou

    IPC: G11B21/02 ,  G11B5/60

    CPC classification number: G11B5/6005 ,  G11B5/5552 ,  G11B5/59638 ,  G11B5/59672

    Abstract: A system comprises a disk writer servo head and a controller. The disk writer servo head is configured to be positioned by a micro actuator. The disk writer servo head is also configured to substantially, continuously alternate between reading a first servo pattern and writing a second servo pattern until a disk is substantially, completely servo written. The first servo pattern establishes a first position of the disk writer servo head and the second servo pattern establishes a second position of the disk writer servo head. The controller is configured to control the operation of the disk writer servo head. The controller is also configured to compare the first and second positions to establish a position error. The micro actuator is configured to reposition the disk writer servo head in response to the position error prior to a next reading.

    Abstract translation: 系统包括盘写入器伺服头和控制器。 盘写入器伺服头构造成由微致动器定位。 磁盘写入器伺服磁头还构造成在读取第一伺服模式和写入第二伺服模式之间基本上连续交替，直到磁盘被完全伺服写入。 第一伺服模式建立磁盘写入器伺服磁头的第一位置，第二伺服模式建立磁盘写入器伺服磁头的第二位置。 控制器配置为控制磁盘写入器伺服磁头的操作。 控制器还被配置为比较第一和第二位置以建立位置误差。 微致动器被配置为在下次读取之前响应于位置误差来重新定位盘写入器伺服头。

    Data storage mediums and devices having bit patterned media
    18.
    发明授权
    Data storage mediums and devices having bit patterned media 有权
    具有位图形介质的数据存储介质和设备

    公开(公告)号：US08995073B1

    公开(公告)日：2015-03-31

    申请号：US13802968

    申请日：2013-03-14

    Applicant: Seagate Technology LLC

    Inventor： Puskal Pokharel ,  Barmeshwar Vikramaditya ,  Rene Johannes Marinus Van De Veerdonk

    IPC: G11B5/09 ,  G11B5/74

    CPC classification number: G11B5/746 ,  G11B5/59688

    Abstract: Apparatuses, devices, and systems are presented with servo and data pattern formation using multi-dot arrays. In one example, an apparatus may comprise a data storage medium including a first patterned array of dots of magnetic material, a second patterned array of dots of magnetic material, and a non-magnetic space located between the first patterned array and second patterned array. In another example, a system may comprise a processor configured to store data to a data storage medium, the data storage medium including a first dot composite including a first patterned array of dots of magnetic material, a second dot composite including a second patterned array of dots of magnetic material, and a non-magnetic space located between the first dot composite and second dot composite. An order in which a dot composite and a non-magnetic space occur may define the value of one bit.

    Abstract translation: 设备，设备和系统呈现使用多点阵列的伺服和数据模式形成。 在一个示例中，装置可以包括数据存储介质，其包括磁性材料点的第一图案化阵列，磁性材料点的第二图案化阵列以及位于第一图案化阵列和第二图案阵列之间的非磁性空间。 在另一示例中，系统可以包括被配置为将数据存储到数据存储介质的处理器，所述数据存储介质包括第一点复合物，所述第一点复合物包括磁性材料点的第一图案化阵列，第二点复合物， 磁性材料的点，以及位于第一点状复合体和第二点状复合体之间的非磁性空间。 发生点复合和非磁性空间的顺序可以定义一位的值。

    Quiet field and synchronization field data format
    19.
    发明授权
    Quiet field and synchronization field data format 有权
    安静字段和同步字段数据格式

    公开(公告)号：US08867158B2

    公开(公告)日：2014-10-21

    申请号：US13842388

    申请日：2013-03-15

    Applicant: Seagate Technology LLC

    Inventor： Jimmie Ray Shaver ,  Barmeshwar Vikramaditya

    IPC: G11B5/09 ,  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。

    Data intersector gaps for data sector format
    20.
    发明授权
    Data intersector gaps for data sector format 有权
    用于数据扇区格式的数据跨部门差距

    公开(公告)号：US08861117B2

    公开(公告)日：2014-10-14

    申请号：US13842851

    申请日：2013-03-15

    Applicant: Seagate Technology LLC

    Inventor： Jimmie Ray Shaver ,  Barmeshwar Vikramaditya

    IPC: G11B5/09 ,  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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