公开(公告)号：US20150009589A1

公开(公告)日：2015-01-08

申请号：US14378778

申请日：2013-02-18

Applicant: Agency for Science, Technology and Research

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

IPC: G11B5/596

CPC classification number: G11B5/012 ,  G11B5/59638 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/66 ,  G11B5/82

Abstract: 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.

Abstract translation: 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：US09123386B2

公开(公告)日：2015-09-01

申请号：US13666118

申请日：2012-11-01

Applicant: Agency for Science, Technology and Research

Inventor： Zhimin Yuan ,  Bo Liu ,  Shengbin Hu ,  Chun Lian Ong

IPC: G11B5/60 ,  G11B27/36

CPC classification number: G11B27/36 ,  G11B5/6011 ,  G11B5/6029 ,  G11B5/607

Abstract: A method for measuring a change in a spacing between a head and a storage medium of a data storage system. The method includes obtaining a first readback signal from the storage medium using the head at a first spacing between the head and the storage medium, determining a first power spectrum density over a frequency range from the obtained first readback signal, obtaining a second readback signal from the storage medium using the head at a second spacing between the head and the storage medium, determining a second power spectrum density over the frequency range from the obtained second readback signal, and providing a measurement indicative of the change in the spacing based on the determined first power spectrum density and the determined second power spectrum density. A data storage system is also provided.

Abstract translation: 一种用于测量数据存储系统的头部和存储介质之间的间隔的变化的方法。 该方法包括使用头部以头部和存储介质之间的第一间隔从存储介质获得第一回读信号，从获得的第一回读信号确定频率范围上的第一功率谱密度，从第 所述存储介质以所述头部和所述存储介质之间的第二间隔使用所述头部，从所获得的第二回读信号确定所述频率范围上的第二功率谱密度，并且基于所确定的所述第二回读信号提供指示所述间隔的变化的测量值 第一功率谱密度和确定的第二功率谱密度。 还提供了数据存储系统。

公开(公告)号：US20140204486A1

公开(公告)日：2014-07-24

申请号：US13946988

申请日：2013-07-19

Applicant: Agency for Science, Technology and Research

Inventor： Jingliang Zhang ,  Anmin Kong ,  Songhua Zhang ,  Zhimin Yuan ,  Linlin Thi

IPC: G11B5/012

CPC classification number: G11B5/59627 ,  G11B5/59655 ,  G11B5/59688 ,  G11B20/1217 ,  G11B27/105 ,  G11B27/3027

Abstract: According to various embodiments, a recording medium may be provided. The recording medium may include a dedicated servo layer configured to provide servo information. The dedicated servo layer may include a plurality of tracks. A first track may include a first servo signal. The first servo signal may include first servo bursts of a pre-determined frequency. A second track adjacent to the first track may include a second servo signal. The second servo signal may include second servo bursts of the pre-determined frequency.

Abstract translation: 根据各种实施例，可以提供记录介质。 记录介质可以包括被配置为提供伺服信息的专用伺服层。 专用伺服层可以包括多个轨道。 第一轨道可以包括第一伺服信号。 第一伺服信号可以包括预定频率的第一伺服脉冲串。 与第一轨道相邻的第二轨道可以包括第二伺服信号。 第二伺服信号可以包括预定频率的第二伺服脉冲串。

公开(公告)号：US20140022877A1

公开(公告)日：2014-01-23

申请号：US13946621

申请日：2013-07-19

Applicant: Agency for Science, Technology and Research

Inventor： Chun Lian Ong ,  Zhimin Yuan ,  Shiming Ang

IPC: G11B20/24

CPC classification number: G11B20/24 ,  G11B20/10046 ,  G11B20/1217 ,  G11B2220/2516

Abstract: According to various embodiments, a method for reading data from a storage medium using a reader, wherein the reader includes at least one reader head, may be provided, wherein the storage medium includes a plurality of tracks. The method may include: reading a first signal with a reader head of the reader at a pre-determined position of the storage medium; reading a second signal with a reader head of the reader at the pre-determined position of the storage medium; and determining data stored at the pre-determined position of the storage medium based on the first signal and based on the second signal.

Abstract translation: 根据各种实施例，可以提供一种使用读取器从存储介质读取数据的方法，其中读取器包括至少一个读取头，其中存储介质包括多个轨道。 该方法可以包括：在读取器的读取头在存储介质的预定位置读取第一信号; 在所述存储介质的预定位置读取读取器的读取头的第二信号; 以及基于所述第一信号确定存储在所述存储介质的预定位置的数据，并且基于所述第二信号。

公开(公告)号：US08922926B2

公开(公告)日：2014-12-30

申请号：US13683161

申请日：2012-11-21

Applicant: Agency for Science, Technology and Research

Inventor： Jingliang Zhang ,  Lin Thi Lin ,  Zhimin Yuan ,  Bo Liu

IPC: G11B5/09 ,  G11B27/30 ,  G11B7/2403 ,  G11B27/24 ,  G11B20/12

CPC classification number: G11B20/14 ,  G11B5/59655 ,  G11B5/59688 ,  G11B7/2403 ,  G11B20/1217 ,  G11B27/24 ,  G11B27/3063 ,  G11B2020/1238 ,  G11B2220/235 ,  G11B2220/2508

Abstract: Various embodiments provide a recording medium. The recording medium may include a dedicated servo layer for providing servo information. The dedicated servo layer may include a plurality of tracks. A first track may include a first servo signal. A second track may include a second servo signal. The first servo signal and the second servo signal may include a plurality of common transitions. The transitions may be provided at a pre-determined frequency.

Abstract translation: 各种实施例提供记录介质。 记录介质可以包括用于提供伺服信息的专用伺服层。 专用伺服层可以包括多个轨道。 第一轨道可以包括第一伺服信号。 第二轨道可以包括第二伺服信号。 第一伺服信号和第二伺服信号可以包括多个公共转变。 可以以预定频率提供转换。

公开(公告)号：US08902526B2

公开(公告)日：2014-12-02

申请号：US13684039

申请日：2012-11-21

Applicant: Agency for Science, Technology and Research

Inventor： Jingliang Zhang ,  Zhimin Yuan ,  Bo Liu ,  Lin Lin Thi @ HTWE Htwe Yee

IPC: G11B5/09 ,  G11B21/02 ,  G11B5/82 ,  G11B5/596

CPC classification number: G11B5/82 ,  G11B5/59688

Abstract: In various embodiments, a recording medium having a servo layer configured to provide servo information and a data recording layer configured to record data, wherein the medium comprises a plurality of servo patterns and a plurality of data segment in one sector, each data segment corresponding to each of the plurality of servo patterns, wherein the plurality of servo patterns comprises a first servo pattern comprising an automatic gain control, a second servo pattern comprising a sector address mark, a third servo pattern comprising a GrayCode, and a fourth servo pattern comprising a plurality of servo bursts, wherein the data recording layer is configured to record the data on the data segments corresponding to the first, second, third and fourth servo patterns.

Abstract translation: 在各种实施例中，具有配置为提供伺服信息的伺服层的记录介质和被配置为记录数据的数据记录层，其中所述介质包括多个伺服模式和一个扇区中的多个数据段，每个数据段对应于 多个伺服模式中的每一个，其中所述多个伺服模式包括包括自动增益控制的第一伺服模式，包括扇区地址标记的第二伺服模式，包括GrayCode的第三伺服模式，以及包括第 多个伺服脉冲串，其中数据记录层被配置为将数据记录在对应于第一，第二，第三和第四伺服模式的数据段上。

公开(公告)号：US20130148236A1

公开(公告)日：2013-06-13

申请号：US13684116

申请日：2012-11-21

Applicant: Agency for Science, Technology and Research

Inventor： Chun Lian Ong ,  Zhimin Yuan ,  Jingliang Zhang ,  Bo Liu

IPC: G11B21/03

CPC classification number: G11B20/10222 ,  G11B20/10259

Abstract: According to embodiments of the present invention, a method for providing a synchronization signal for at least one of a read operation or a write operation carried out by means of a head in a data storage device is provided. The method includes obtaining a readback servo signal from a storage medium of the data storage device by means of the head, the readback servo signal having at least one frequency associated with a servo track of the storage medium, frequency mixing the readback servo signal with a local signal having a local frequency to provide a frequency mixed signal, and filtering the frequency mixed signal to provide the synchronization signal for at least one of the read operation or the write operation. According to further embodiments of the present invention, a data storage device is also provided.

Abstract translation: 根据本发明的实施例，提供一种用于提供用于通过数据存储装置中的磁头执行的读取操作或写入操作中的至少一个的同步信号的方法。 该方法包括通过头部从数据存储装置的存储介质获得回读伺服信号，回读伺服信号具有与存储介质的伺服轨道相关联的至少一个频率，将回读伺服信号与 具有本地频率以提供频率混合信号的本地信号，以及对频率混合信号进行滤波以为读取操作或写入操作中的至少一个提供同步信号。 根据本发明的另外的实施例，还提供了数据存储装置。