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公开(公告)号：US08477442B2
公开(公告)日：2013-07-02
申请号：US12800300
申请日：2010-05-11
CPC分类号： G11B5/59688 , B82Y10/00 , G11B5/59644 , G11B5/59666 , G11B5/743
摘要： Pre-patterned discrete track media for self-servo writing are described. Embodiments include land and groove patterns for two or more Integrated Servo sequence fields for each servo sector in which one of the Integrated Servo sequence fields is aligned with the data track and a second sequence is offset by one-half of a track width. The lands and grooves between the Integrated Servo sequence fields are preferably the same width as those between the data tracks to facilitate planarization. Alternative embodiments include a sync feature for each servo sector formed by a selected groove and/or land pattern as a marker for the start of the servo fields. Alternative embodiments include a bootstrap zone with servo patterns that are readable when DC-magnetized. Described methods of self-servowriting include ways to adapt to eccentricity and non-circularity of pre-patterned discrete tracks with respect to the head paths.
摘要翻译： 描述了用于自伺服写入的预先构图的离散轨道介质。 实施例包括用于每个伺服扇区的两个或更多个集成伺服序列字段的平面和凹槽图案，其中集成伺服序列字段中的一个与数据轨道对准，并且第二序列偏移轨道宽度的一半。 集成伺服序列区域之间的焊盘和凹槽优选地与数据磁道之间的平面宽度相同，以便于平坦化。 替代实施例包括由所选择的槽和/或焊盘图案形成的每个伺服扇区的同步特征作为伺服字段开始的标记。 替代实施例包括具有伺服图案的自举区，其在DC磁化时是可读的。 自伺服驱动的描述方法包括适应相对于头部路径的预先构图的离散轨迹的偏心度和非圆度的方法。
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公开(公告)号：US20110279924A1
公开(公告)日：2011-11-17
申请号：US12800300
申请日：2010-05-11
CPC分类号： G11B5/59688 , B82Y10/00 , G11B5/59644 , G11B5/59666 , G11B5/743
摘要： Pre-patterned discrete track media for self-servo writing are described. Embodiments include land and groove patterns for two or more Integrated Servo sequence fields for each servo sector in which one of the Integrated Servo sequence fields is aligned with the data track and a second sequence is offset by one-half of a track width. The lands and grooves between the Integrated Servo sequence fields are preferably the same width as those between the data tracks to facilitate planarization. Alternative embodiments include a sync feature for each servo sector formed by a selected groove and/or land pattern as a marker for the start of the servo fields. Alternative embodiments include a bootstrap zone with servo patterns that are readable when DC-magnetized. Described methods of self-servowriting include ways to adapt to eccentricity and non-circularity of pre-patterned discrete tracks with respect to the head paths.
摘要翻译： 描述了用于自伺服写入的预先构图的离散轨道介质。 实施例包括用于每个伺服扇区的两个或更多个集成伺服序列字段的平面和凹槽图案，其中集成伺服序列字段中的一个与数据轨道对准，并且第二序列偏移轨道宽度的一半。 集成伺服序列区域之间的焊盘和凹槽优选地与数据磁道之间的平面宽度相同，以便于平坦化。 替代实施例包括由所选择的槽和/或焊盘图案形成的每个伺服扇区的同步特征作为伺服字段开始的标记。 替代实施例包括具有伺服图案的自举区，其在DC磁化时是可读的。 自伺服驱动的描述方法包括适应相对于头部路径的预先构图的离散轨迹的偏心度和非圆度的方法。
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3.发明授权公开(公告)号：US06995938B2
公开(公告)日：2006-02-07
申请号：US10841034
申请日：2004-05-06
IPC分类号： G11B5/596
CPC分类号： G11B5/59655 , G11B5/59605
摘要： A data recording system uses a recording medium in which the tracks have pseudo-noise (PN) sequences with good autocorrelation properties as servo information for controlling the position of the recording head. A first set of alternating tracks uses a leading pseudo-random binary sequence (PRBS), which is a PN sequence with good autocorrelation properties, and a following PRBS that is cyclically shifted from the leading PRBS. A second set of alternating tracks interleaved with the first set also has a leading PRBS and a following PRBS that is cyclically shifted from the leading PRBS, but the leading PRBS in each of the tracks in the second set is offset along-the-track from the leading PRBS in the tracks of the first set. The head positioning control system uses the leading PRBS to generate a servo timing mark (STM), the cyclic shift to generate track identification (TID), and the following PRBS from adjacent tracks to generate the head position error signal (PES).
摘要翻译： 数据记录系统使用其中轨道具有良好自相关特性的伪噪声（PN）序列的记录介质，作为用于控制记录头位置的伺服信息。 第一组交替轨道使用前导伪随机二进制序列（PRBS），其是具有良好自相关特性的PN序列，以及从前导PRBS循环移位的以下PRBS。 与第一组交织的第二组交替轨迹还具有前导PRBS和从前导PRBS循环移位的后续PRBS，但是第二组中的每个轨道中的前导PRBS沿着轨迹偏移 领先的PRBS在第一集的轨道。 头部定位控制系统使用前导PRBS来产生伺服定时标记（STM），循环移位以产生轨迹识别（TID），以及来自相邻轨道的后续PRBS以产生头部位置误差信号（PES）。
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4.发明授权Method and apparatus for implementing a set rate code for data channels with alternate 9-bit code words and 8-bit code words 失效用于实现具有交替的9位代码字和8位代码字的数据通道的设定速率代码的方法和装置
公开(公告)号：US5784010A
公开(公告)日：1998-07-21
申请号：US794718
申请日：1997-02-03
CPC分类号： G11B20/1426 , G11B2020/1434 , G11B2020/1446
摘要： A data encoding method and apparatus are provided for implementing a predefined rate code, such as a 16/17 rate code for a data detection channel in a direct access storage device. A binary data stream is received and sequential symbols of the received binary data stream are identified. Sequential alternate symbols of the binary data stream are encoded into first codewords. Sequential alternate other symbols are encoded into second codewords. The alternating first and second codewords are sequentially combined. For a rate 16/17 rate code, the first codewords include 9-bit codewords and the second codewords include 8-bit codewords. The second 8-bit codewords are either raw symbols of the received binary data stream or remapped symbols of the received binary data stream. All likely error events are limited to within three consecutive bytes in a user data stream with a 16/17 rate code of the preferred embodiment.
摘要翻译： 提供了一种数据编码方法和装置，用于实现诸如用于直接访问存储设备中的数据检测通道的16/17速率码的预定速率码。 接收二进制数据流，并识别所接收的二进制数据流的顺序符号。 二进制数据流的顺序替代符号被编码成第一码字。 顺序替代的其他符号被编码成第二码字。 交替的第一和第二码字被顺序组合。 对于速率16/17速率码，第一码字包括9位码字，第二码字包括8位码字。 第二个8位码字是接收的二进制数据流的原始符号或接收的二进制数据流的重新映射的符号。 所有可能的错误事件被限制在具有优选实施例的16/17速率代码的用户数据流中的三个连续字节内。
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公开(公告)号：US09384779B2
公开(公告)日：2016-07-05
申请号：US12653862
申请日：2009-12-18
CPC分类号： G11B20/1217 , G11B5/59655 , G11B5/59688 , G11B2020/1238 , G11B2020/1282 , G11B2020/1292 , G11B2020/1457 , G11B2220/2516
摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and location information such as the track-ID. The juxtaposition of sequences in the servo wedges is additionally constrained to increase the detectability of the contribution of adjacent sequences in the read signal. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences.
摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在伺服楔中序列的并置被附加地限制在增加读信号中相邻序列的贡献的可检测性。 集成的伺服字段可以通过相邻序列读取的信号的幅度来提供与数据轨道的中心相关的位置误差信号（PES）。
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公开(公告)号：US20110149433A1
公开(公告)日：2011-06-23
申请号：US12653863
申请日：2009-12-18
IPC分类号： G11B5/596
CPC分类号： G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B2020/1281 , G11B2020/1284 , G11B2220/2516
摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. In one embodiment the plurality sequences encoding a location identifier such as a track-ID are distributed across a set of servo wedges. A method of encoding the location identifier using a Chinese Remainder Theorem is described.
摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在一个实施例中，编码诸如轨道ID的位置标识符的多个序列分布在一组伺服楔块上。 描述了使用中国剩余定理对位置标识符进行编码的方法。
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公开(公告)号：US20110149432A1
公开(公告)日：2011-06-23
申请号：US12653862
申请日：2009-12-18
IPC分类号： G11B5/596
CPC分类号： G11B20/1217 , G11B5/59655 , G11B5/59688 , G11B2020/1238 , G11B2020/1282 , G11B2020/1292 , G11B2020/1457 , G11B2220/2516
摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and location information such as the track-ID. The juxtaposition of sequences in the servo wedges is additionally constrained to increase the detectability of the contribution of adjacent sequences in the read signal. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences.
摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在伺服楔中序列的并置被附加地限制在增加读信号中相邻序列的贡献的可检测性。 集成的伺服字段可以通过相邻序列读取的信号的幅度来提供与数据轨道的中心相关的位置误差信号（PES）。
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8.发明申请MAGNETIC RECORDING DISK AND DISK DRIVE WITH ALTERNATING SINGLE-POLARITY POSITION ERROR SIGNAL (PES) BLOCKS FOR READ/WRITE HEAD POSITIONING 有权具有单极位置误差信号（PES）磁头记录磁盘和磁盘驱动器，用于读/写头位置公开(公告)号：US20100142085A1
公开(公告)日：2010-06-10
申请号：US12328684
申请日：2008-12-04
CPC分类号： G11B5/59627 , G11B5/59688
摘要： A magnetic recording disk drive has a position-error-signal (PES) servo pattern divided into at least two circumferentially adjacent fields that extend radially across the data tracks and include PES blocks that are DC magnetized in one direction, with each PES block having a magnetization opposite to the magnetization of its radially adjacent neighboring PES blocks. Each PES field is contiguous with and shifted radially relative to its circumferentially adjacent neighbor PES fields. Each PES block has a single DC magnetization, and the length of the magnetization is substantially longer than the length of the magnetizations in the other fields of the servo pattern.
摘要翻译： 磁记录盘驱动器具有分割成沿着数据轨道径向延伸的至少两个周向相邻的场的位置误差信号（PES）伺服模式，并且包括沿一个方向直流磁化的PES块，每个PES块具有 与其径向相邻的相邻PES块的磁化相反的磁化。 每个PES场与其周向相邻的邻近的PES场相邻且相对于其周向相邻的相邻的PES场径向移动。 每个PES块具有单个DC磁化，并且磁化的长度基本上长于伺服模式的其它磁场中的磁化的长度。
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公开(公告)号：US09311942B2
公开(公告)日：2016-04-12
申请号：US12653874
申请日：2009-12-18
CPC分类号： G11B5/59688 , G11B5/59655
摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. The integrated servo fields can provide a Position Error Signal (PES) in relation to the center of a data track through the amplitude of the signal read for adjacent sequences. The servo system detects the sequences in the signal from the read head using a set of digital filters for the set of encoded sequences.
摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 集成的伺服字段可以通过相邻序列读取的信号的幅度来提供与数据轨道的中心相关的位置误差信号（PES）。 伺服系统使用一组编码序列的数字滤波器来检测来自读取头的信号中的序列。
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公开(公告)号：US08422161B2
公开(公告)日：2013-04-16
申请号：US12653863
申请日：2009-12-18
IPC分类号： G11B5/596
CPC分类号： G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B2020/1281 , G11B2020/1284 , G11B2220/2516
摘要： An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set that is constrained to preferably provide some or all of the following functions: the Servo Track Mark (STM), the Position Error Signal (PES) and positional information such as the track-ID. In one embodiment the plurality sequences encoding a location identifier such as a track-ID are distributed across a set of servo wedges. A method of encoding the location identifier using a Chinese Remainder Theorem is described.
摘要翻译： 本发明的实施例在包括具有所选数学特性的编码比特序列的集成伺服字段中实现存储设备的一些或所有主要伺服子功能。 集成伺服字段由多个编码序列组成，编码序列是被选择的序列集合的成员，其被限制为优选地提供以下功能中的一些或全部：伺服轨迹标记（STM），位置误差信号（PES） 以及诸如轨道ID的位置信息。 在一个实施例中，编码诸如轨道ID的位置标识符的多个序列分布在一组伺服楔块上。 描述了使用中国剩余定理对位置标识符进行编码的方法。
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