公开(公告)号：US09685181B2

公开(公告)日：2017-06-20

申请号：US14914813

申请日：2014-09-02

申请人： MARVELL INTERNATIONAL LTD.

发明人： Jingliang Zhang ,  Anmin Kong ,  Songhua Zhang ,  Zhimin Yuan

IPC分类号： G11B5/596 ,  G11B20/10

CPC分类号： G11B5/59627 ,  G11B5/5965 ,  G11B20/10046

摘要： In the present disclosure, a method of operating a data storage apparatus is provided. The method includes writing a data signal into a portion of a data layer in a recording medium of a data storage apparatus. The method further includes determining a data layer coupling interference value arising due to interference from the data layer provided in between a sensor head and a servo layer of the recording medium in reading servo data, the data layer coupling interference value determined based on the data signal. The method further includes writing the data layer coupling interference value onto the recording medium. A corresponding data storage apparatus is provided.

公开(公告)号：US09275654B2

公开(公告)日：2016-03-01

申请号：US14827822

申请日：2015-08-17

申请人： Marvell International LTD.

发明人： Chiew Leong Wong ,  Pantelis Alexopoulos ,  Zhimin Yuan ,  Chun Lian Ong

IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/012

CPC分类号： G11B5/012 ,  G11B5/59638 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/66 ,  G11B5/82

摘要： A servo system for writing servo information on a recording medium of a hard disk drive and for determining head position based on the servo information with a tracking accuracy, the servo system including a first magnetic head and a servo writer. The servo writer is configured to write the servo information on the recording medium by forming, using the first magnetic head, a first servo pattern comprising a servo burst pattern on a segment of a first track of a first layer of the recording medium; and by forming a second servo pattern comprising addressing information on a segment of a second track of a second layer of the recording medium. The second track is arranged half a width of the first track from the first track to increase the tracking accuracy of the servo system.

摘要翻译： 一种用于在硬盘驱动器的记录介质上写入伺服信息并且用于基于跟踪精度的伺服信息来确定磁头位置的伺服系统，所述伺服系统包括第一磁头和伺服写入器。 伺服写入器被配置为通过使用第一磁头在记录介质的第一层的第一磁道的段上形成包括伺服脉冲串图形的第一伺服模式来将伺服信息写入记录介质; 并且通过形成第二伺服模式，其包括在记录介质的第二层的第二轨道的段上的寻址信息。 第二轨道从第一轨道布置在第一轨道的一半宽度上，以增加伺服系统的跟踪精度。

公开(公告)号：US20150380034A1

公开(公告)日：2015-12-31

申请号：US14827822

申请日：2015-08-17

申请人： Marvell International LTD.

发明人： Chiew Leong Wong ,  Pantelis Alexopoulos ,  Zhimin Yuan ,  Chun Lian Ong

IPC分类号： G11B5/596 ,  G11B20/12

CPC分类号： G11B5/012 ,  G11B5/59638 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/66 ,  G11B5/82

摘要： A servo system for writing servo information on a recording medium of a hard disk drive and for determining head position based on the servo information with a tracking accuracy, the servo system including a first magnetic head and a servo writer. The servo writer is configured to write the servo information on the recording medium by forming, using the first magnetic head, a first servo pattern comprising a servo burst pattern on a segment of a first track of a first layer of the recording medium; and by forming a second servo pattern comprising addressing information on a segment of a second track of a second layer of the recording medium. The second track is arranged half a width of the first track from the first track to increase the tracking accuracy of the servo system.

摘要翻译： 一种用于在硬盘驱动器的记录介质上写入伺服信息并且用于基于跟踪精度的伺服信息来确定磁头位置的伺服系统，所述伺服系统包括第一磁头和伺服写入器。 伺服写入器被配置为通过使用第一磁头在记录介质的第一层的第一磁道的段上形成包括伺服脉冲串图形的第一伺服模式来将伺服信息写入记录介质; 并且通过形成第二伺服模式，其包括在记录介质的第二层的第二轨道的段上的寻址信息。 第二轨道从第一轨道布置在第一轨道的一半宽度上，以增加伺服系统的跟踪精度。

公开(公告)号：US09111562B2

公开(公告)日：2015-08-18

申请号：US14378778

申请日：2013-02-18

申请人： MARVELL INTERNATIONAL LTD.

发明人： Chiew Leong Wong ,  Pantelis Alexopoulos ,  Zhimin Yuan ,  Chun Lian Ong

IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/012 ,  G11B5/66 ,  G11B5/82

CPC分类号： G11B5/012 ,  G11B5/59638 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/66 ,  G11B5/82

摘要： In various embodiments, a method of writing servo information to a recording medium may be provided. The method include forming a first servo pattern (including a servo burst pattern) on a segment of a first track of a first layer of the recording medium, the first track having a track width. The method may further include forming a second servo pattern (including addressing information) on a segment of a second track of a second layer of the recording medium. The second track is arranged from the first track by half the track width.

摘要翻译： 在各种实施例中，可以提供将伺服信息写入记录介质的方法。 该方法包括在记录介质的第一层的第一轨道的段上形成第一伺服模式（包括伺服脉冲串图形），第一轨道具有磁道宽度。 该方法还可以包括在记录介质的第二层的第二轨道的段上形成第二伺服模式（包括寻址信息）。 第二轨道从第一轨道排列一半轨道宽度。

公开(公告)号：US08780476B2

公开(公告)日：2014-07-15

申请号：US13242983

申请日：2011-09-23

申请人： Jeffrey P. Grundvig

发明人： Jeffrey P. Grundvig

IPC分类号： G11B5/09

CPC分类号： G11B20/1403 ,  G11B5/5965 ,  G11B20/10222

摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide clock generation systems that include: a first clock multiplier circuit, a second clock multiplier circuit, a modulus accumulator circuit, and a data clock phase control circuit. The first clock multiplier circuit is operable to multiply a reference clock by a first multiplier to yield a first domain clock, and the second clock multiplier circuit is operable to multiply the reference clock by a second multiplier to yield a second domain clock. The modulus accumulator circuit is operable to yield a value indicating a fractional amount of the second domain clock that an edge of the second domain clock is offset from a trigger signal. The data clock phase control circuit is operable to phase shift the second domain clock by a phase amount corresponding to the fractional amount.

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。 例如，本发明的一些实施例提供了时钟产生系统，其包括：第一时钟乘法器电路，第二时钟乘法器电路，模数累加器电路和数据时钟相位控制电路。 第一时钟乘法器电路可操作以将参考时钟乘以第一乘法器以产生第一域时钟，并且第二时钟乘法器电路可操作以将参考时钟乘以第二乘法器以产生第二域时钟。 模数累加器电路可操作以产生指示第二域时钟的边缘与触发信号偏移的第二域时钟的分数量的值。 数据时钟相位控制电路可操作以将第二域时钟相移相应于分数量的相位量。

公开(公告)号：US20110032637A1

公开(公告)日：2011-02-10

申请号：US12904910

申请日：2010-10-14

申请人： Mark David Bedillion

发明人： Mark David Bedillion

IPC分类号： G11B5/596

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/5965 ,  G11B5/59688 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

摘要： A bit-patterned magnetic media (BPM) includes with respect to each data track a first sub-track and a second sub-track, each sub-track comprised of a plurality of bit-islands. A transducer head placed over a data track generates a readback signal. Channel response circuitry demodulates the readback signal and detects fine positioning information based on a comparison of a readback signal generated in response to the first sub-track and a readback signal generated in response to the second sub-track.

摘要翻译： 位图形磁介质（BPM）包括关于每个数据轨道的第一子轨道和第二子轨道，每个子轨道由多个位岛组成。 放置在数据轨道上的换能器头产生回读信号。 信道响应电路解调回读信号，并且基于响应于第一子轨道生成的回读信号和响应于第二子轨道生成的回读信号的比较来检测精细定位信息。

公开(公告)号：US20100220408A1

公开(公告)日：2010-09-02

申请号：US12781674

申请日：2010-05-17

申请人： Curtis H. Bruner ,  Larry J. Koudele ,  Noureddine Kermiche ,  James B. French, JR.

发明人： Curtis H. Bruner ,  Larry J. Koudele ,  Noureddine Kermiche ,  James B. French, JR.

IPC分类号： G11B5/09

CPC分类号： G11B5/5965

摘要： An apparatus includes a disk arrangement, a first signal processing path configured to output data from the disk arrangement according to a first protocol, a second signal processing path configured to output data from the disk arrangement according to a second protocol, and an interface including a set of electrical conductors and a mode control unit. The mode control unit is configured to output data from the first signal processing path on the set of electrical conductors according to the first protocol and to output data from the second signal processing path on the set of electrical conductors according to the second protocol according to a control signal received by the mode control unit. The second protocol is different from the first protocol.

摘要翻译： 一种装置，包括盘装置，第一信号处理路径，被配置为根据第一协议从盘装置输出数据;第二信号处理路径，被配置为根据第二协议从盘装置输出数据;以及接口，包括： 电导体组和模式控制单元。 模式控制单元被配置为根据第一协议在第一信号处理路径上输出数据，并根据第二协议从第二信号处理路径中的第二信号处理路径输出数据，根据第二协议 控制信号由模式控制单元接收。 第二个协议与第一个协议不同。

公开(公告)号：US20100073797A1

公开(公告)日：2010-03-25

申请号：US12628917

申请日：2009-12-01

申请人： Yuichi Yamada

发明人： Yuichi Yamada

IPC分类号： G11B27/36 ,  G11B21/02

CPC分类号： G11B5/455 ,  G11B5/5534 ,  G11B5/5965

摘要： According to one embodiment, a storage device includes a target track write module and a test pattern read module. The target track write module performs a write operation on a target track, which is a predetermined track intersecting a test pattern, on a storage medium to which the test pattern is written. The test pattern intersects a plurality of tracks arranged at regular intervals and is continuously arranged over the tracks. The test pattern read module reads the test pattern overwritten by the target track write module.

摘要翻译： 根据一个实施例，存储设备包括目标轨道写入模块和测试模式读取模块。 目标轨迹写入模块对作为测试图案的写入的存储介质上的作为与测试图案相交的预定轨迹的目标轨迹执行写入操作。 测试图案与以规则间隔布置的多个轨道相交，并且连续地布置在轨道上。 测试模式读取模块读取由目标磁道写入模块覆盖的测试模式。

公开(公告)号：US20090244760A1

公开(公告)日：2009-10-01

申请号：US12413516

申请日：2009-03-28

申请人： Toshikazu KANAOKA ,  Akihiro Itakura

发明人： Toshikazu KANAOKA ,  Akihiro Itakura

IPC分类号： G11B5/09

CPC分类号： G11B5/59627 ,  G11B5/5965 ,  G11B20/10222 ,  G11B20/1217 ,  G11B20/1403 ,  G11B2020/1242 ,  G11B2020/1245 ,  G11B2020/1281 ,  G11B2020/1484 ,  G11B2220/2516

摘要： A magnetic storage control apparatus for controlling a magnetic storage apparatus that uses a recording medium having a plurality of reference signals on its track and having a data area between the reference signals. The apparatus includes: a measurement section that reproduces the reference signal in a predetermined track of the recording medium and measures, for each data area, the time for a head to scan the data area to obtain a measurement value; a calculation section that calculates a setting value concerning the frequency of a recording clock used in data recording based on the measurement values of a plurality of data areas obtained by the measurement section; and a generation section that generates the recording clock based on the measurement values obtained by the measurement section and setting value calculated by the calculation section.

摘要翻译： 一种磁存储控制装置，用于控制在其轨道上使用具有多个参考信号的记录介质并且具有参考信号之间的数据区的磁存储装置。 该装置包括：测量部分，其再现记录介质的预定轨道中的参考信号，并且针对每个数据区域测量头扫描数据区域以获得测量值的时间; 计算部，其基于由所述测量部获得的多个数据区域的测量值，计算与在数据记录中使用的记录时钟的频率有关的设定值; 以及生成部，其基于由测量部获得的测量值和由计算部计算出的设定值来生成记录时钟。

公开(公告)号：US20090123870A1

公开(公告)日：2009-05-14

申请号：US12269912

申请日：2008-11-13

申请人： Toshihiro USA ,  Kazunori Komatsu

发明人： Toshihiro USA ,  Kazunori Komatsu

IPC分类号： G03F7/20 ,  G11B5/82 ,  G21K5/04

CPC分类号： G11B5/82 ,  B82Y10/00 ,  B82Y40/00 ,  G11B5/5965 ,  G11B5/59688 ,  G11B5/743 ,  G11B9/10 ,  H01J37/3174 ,  H01J2237/20

摘要： An electron beam lithographic method and system for forming a micro-pattern, including servo patterns each of which comprises a plurality of recessed servo elements in a track and groove patterns each of which comprises an inter-track groove extending along the track and to be formed on a discrete track medium, on the a resist coated disc substrate by scanning the resist-coated surface with an electron beam during rotation of the disc substrate. A sequential process of the electron beam lithography comprises the steps of forming the servo elements as an latent image in the resist-coated surface with an electron beam having an irradiation spot diameter smaller than a width of the servo element during rotation of the disc substrate and, subsequently, forming the inter-track grooves in a latent image in the resist-coated surface by intermittently scanning the resist-coated surface in a direction perpendicular to a track direction at regular intervals during rotation of the disc substrate so as thereby to form a continuous row of groove elements into which the inter-track groove is divided.

摘要翻译： 一种用于形成微图案的电子束光刻方法和系统，包括伺服图案，每个伺服图案包括轨道和凹槽图案中的多个凹陷的伺服元件，每个凹槽的伺服元件包括沿着轨道延伸并形成的轨道间槽 在离散的轨道介质上，通过在盘基片旋转期间用电子束扫描抗蚀剂涂覆的表面，在抗蚀剂涂覆的盘基片上。 电子束光刻的顺序过程包括以下步骤：在光刻胶涂覆表面中形成具有照射光点直径小于光盘基片旋转期间的光阑直径的电子束的潜像的伺服元件，以及 随后，通过在盘基板的旋转期间以规则的间隔在垂直于轨道方向的方向间歇地扫描抗蚀剂涂覆表面，在抗蚀剂涂覆的表面中形成潜像中的轨道间凹槽，从而形成 连续排的槽元件，分隔槽间槽。