公开(公告)号：US08930781B2

公开(公告)日：2015-01-06

申请号：US13301199

申请日：2011-11-21

申请人： Estuardo Licona ,  Mats Oberg

发明人： Estuardo Licona ,  Mats Oberg

IPC分类号： G11C29/00 ,  G11B20/10 ,  G11B27/36 ,  G11B20/18

CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10222 ,  G11B20/1037 ,  G11B20/10435 ,  G11B20/10481 ,  G11B27/36 ,  G11B2020/1823 ,  G11B2220/2537

摘要： A signal processing circuit includes a plurality of processing-circuit modules and a logic control circuit. The plurality of processing-circuit modules is configured to process an electrical signal. The plurality of processing-circuit modules has at least one processing parameter that is adaptively adjusted based on the electrical signal. The logic control circuit is configured to receive signals from the plurality of processing-circuit modules, validate the processing based on the received signals, and control a storage circuit to sample and store a value of the processing parameter when the processing is validated. Further, the logic control circuit is configured to control the storage circuit to maintain the value of processing parameter when the processing fails validation, and to control the storage circuit to recover the processing parameter in the plurality of processing-circuit modules to the stored value when the plurality of processing-circuit modules is disturbed by a defect.

摘要翻译： 信号处理电路包括多个处理电路模块和逻辑控制电路。 多个处理电路模块被配置为处理电信号。 多个处理电路模块具有至少一个基于电信号自适应地调整的处理参数。 逻辑控制电路被配置为从多个处理电路模块接收信号，基于接收到的信号来验证处理，并且当处理被验证时，控制存储电路采样并存储处理参数的值。 此外，逻辑控制电路被配置为当处理失败确认时控制存储电路来维持处理参数的值，并且控制存储电路将多个处理电路模块中的处理参数恢复为存储值 多个处理电路模块受到缺陷的干扰。

公开(公告)号：US08773796B2

公开(公告)日：2014-07-08

申请号：US13204360

申请日：2011-08-05

申请人： Toshiki Hirano ,  Xiaotian Sun

发明人： Toshiki Hirano ,  Xiaotian Sun

IPC分类号： G11B5/09

CPC分类号： G11B5/59616 ,  G11B5/746 ,  G11B20/10222 ,  G11B20/10435 ,  G11B2220/252

摘要： A system and method of establishing write timing in a disk drive using bit patterned media and a magnetic head with read-write offset in which servoing and writing occur on different tracks with timing offsets. Initially, the distance between the servoing and writing tracks is determined for each track/head position in accordance with head geometry and skew angle. The relative timing errors are then measured by iteratively writing data at timing offset increments to determine the optimal timing offset for the servoing/writing track pair, and then writing the offset to sync fields on the servoing tracks of the disk.

摘要翻译： 使用位图案化介质在磁盘驱动器中建立写时序的系统和方法以及具有读写偏移的磁头，其中伺服和写入在具有定时偏移的不同轨道上发生。 首先，根据头部几何和倾斜角度，为每个轨道/头部位置确定伺服和写入轨迹之间的距离。 然后通过以定时偏移增量迭代地写入数据来测量相对定时误差，以确定伺服/写入磁道对的最佳定时偏移，然后将偏移写入到磁盘的伺服磁道上的同步字段。

公开(公告)号：US08427772B2

公开(公告)日：2013-04-23

申请号：US12782383

申请日：2010-05-18

申请人： Jeffey S. Lille ,  Ricardo Ruiz

发明人： Jeffey S. Lille ,  Ricardo Ruiz

IPC分类号： G11B5/09 ,  G11B21/02

CPC分类号： G11B5/012 ,  B82Y10/00 ,  G11B5/59627 ,  G11B5/746 ,  G11B20/10009 ,  G11B20/1024 ,  G11B20/10388 ,  G11B20/10435 ,  G11B2005/0005 ,  G11B2220/252

摘要： A disk drive with patterned-media disks has information recorded in the servo sectors that identifies misplacement of the data islands in the data regions between the servo sectors. This misplacement information is read from the servo sectors prior to writing to correct either or both the radial position of the write head and the timing of the write pulses to the data islands. The misplacement information may include radial deviation of the data tracks, circumferential or along-the-track misplacement of the data islands, or the location of defective data islands.

摘要翻译： 具有图案媒体盘的磁盘驱动器具有记录在伺服扇区中的信息，其识别伺服扇区之间的数据区域中的数据岛的错位。 在写入之前，从伺服扇区读取该错位信息，以校正写入头的径向位置和数据岛的写入脉冲的定时。 错位信息可能包括数据轨迹的径向偏差，数据岛的圆周或轨道错位或缺陷数据岛的位置。

公开(公告)号：US08982681B1

公开(公告)日：2015-03-17

申请号：US14074299

申请日：2013-11-07

申请人： Marvell International Ltd.

发明人： Jingfeng Liu ,  Mats Oberg

IPC分类号： G11B20/16 ,  G11B27/30 ,  G11B19/28

CPC分类号： G11B27/3027 ,  G11B19/28 ,  G11B20/10222 ,  G11B20/10435 ,  G11B2220/20 ,  G11B2220/2575

摘要： A method and device for determining frequency error to extend the pull-in range of a timing recovery circuit for a storage device such as an optical disc drive. A code associated with a storage format of the storage device is detected, and the distance between occurrences of the code is determined. The calculated distance is compared with the expected distance to determine the difference. Based on the difference, the frequency error is determined.

摘要翻译： 一种用于确定频率误差以延长诸如光盘驱动器之类的存储装置的定时恢复电路的拉入范围的方法和装置。 检测与存储装置的存储格式相关联的代码，并且确定代码的出现之间的距离。 将计算出的距离与预期距离进行比较以确定差异。 根据差异，确定频率误差。

公开(公告)号：US20130141812A1

公开(公告)日：2013-06-06

申请号：US13706311

申请日：2012-12-05

申请人： GUZIK TECHNICAL ENTERPRISES

发明人： Anatoli B. Stein ,  Semen P. Volfbeyn

IPC分类号： G11B20/10

CPC分类号： G11B20/10222 ,  G11B5/012 ,  G11B5/59616 ,  G11B5/746 ,  G11B20/1024 ,  G11B20/10435 ,  G11B2220/252

摘要： A write clock generator for use in writing data to a rotating patterned magnetic media disk is disclosed. The generator includes a magnetic read head for generating a succession of servo signals representative of succession of servo magnetization patterns detected from a corresponding succession of arcuate sectors along a circular data track on the disk. A preamble processor generates a corresponding succession of sector pair signals representative of the lengths of adjacent sectors along the data track on a rolling pair-wise basis. A next sector length predictor processor determines for a succession of pairs of sectors, a length ratio of the lengths of the sectors in the respective pairs of sectors. A clock generator generates a periodic clock for each sector of the succession of sectors, wherein the clock rate associated with a current sector has an associated phase deviation relative to a clock rate associated with a previous sector, which is proportional to the length ratio for the current sector and the previous sector.

摘要翻译： 公开了一种用于将数据写入旋转图案化磁介质盘的写时钟发生器。 该发生器包括一个磁读头，用于产生一系列伺服信号，该伺服信号代表沿着圆盘上的圆形数据轨道从相应的一系列弧形扇区中检测出的伺服磁化模式的连续。 前导处理器在滚动成对的基础上产生表示沿着数据轨道的相邻扇区的长度的相应连续的扇区对信号。 下一扇区长度预测器处理器确定一连串的扇区对，各扇区对中的扇区的长度的长度比。 时钟发生器为该连续扇区的每个扇区生成周期性时钟，其中与当前扇区相关联的时钟速率相对于与先前扇区相关联的时钟速率具有相关联的相位偏移，其与 当前行业和上一个行业。

公开(公告)号：US20130033777A1

公开(公告)日：2013-02-07

申请号：US13204360

申请日：2011-08-05

申请人： Toshiki Hirano ,  Xiaotian Sun

发明人： Toshiki Hirano ,  Xiaotian Sun

IPC分类号： G11B27/36 ,  G11B5/09

CPC分类号： G11B5/59616 ,  G11B5/746 ,  G11B20/10222 ,  G11B20/10435 ,  G11B2220/252

摘要： A system and method of establishing write timing in a disk drive using bit patterned media and a magnetic head with read-write offset in which servoing and writing occur on different tracks with timing offsets. Initially, the distance between the servoing and writing tracks is determined for each track/head position in accordance with head geometry and skew angle. The relative timing errors are then measured by iteratively writing data at timing offset increments to determine the optimal timing offset for the servoing/writing track pair, and then writing the offset to sync fields on the servoing tracks of the disk.

摘要翻译： 使用位图案化介质在磁盘驱动器中建立写时序的系统和方法以及具有读写偏移的磁头，其中伺服和写入在具有定时偏移的不同轨道上发生。 首先，根据头部几何和倾斜角度，为每个轨道/头部位置确定伺服和写入轨迹之间的距离。 然后通过以定时偏移增量迭代地写入数据来测量相对定时误差，以确定伺服/写入磁道对的最佳定时偏移，然后将偏移写入到磁盘的伺服磁道上的同步字段。

公开(公告)号：US20080290916A1

公开(公告)日：2008-11-27

申请号：US11597768

申请日：2004-05-26

申请人： Isao Okada ,  Tsuyoshi Hirabuki

发明人： Isao Okada ,  Tsuyoshi Hirabuki

IPC分类号： H03L7/06

CPC分类号： G11B20/1403 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/1024 ,  G11B20/10425 ,  G11B20/10435 ,  G11B2020/1269 ,  G11B2220/2537 ,  H03L7/093 ,  H03L7/23

摘要： A system clock signal generator circuit comprising a first PLL circuit that is frequency and phase locked to a wobble signal; a frequency and phase comparator for comprising a first output signal from the first PLL circuit with a system clock signal as frequency divided by M and for outputting a second output signal based on the differences in frequency and in phase; a PLL filter for providing a predetermined cutoff to the second output signal to output a third output signal; a pulse width modulating circuit for generating a pulse wave, the carrier frequency of which is a second reference clock signal, and for outputting a fourth output signal obtained by modulating the pulse width of the pulse wave by the third output signal; a low pass filter for smoothing the fourth output signal to output a fifth output signal; a VCO circuit the control voltage of which is the fifth output signal; a first frequency divider circuit for frequency dividing an output signal of the VCO circuit by N to output a system clock signal; and a second frequency divider circuit for frequency dividing, by M, and feeding the system clock signal back to the frequency and phase comparator.

公开(公告)号：US08477445B2

公开(公告)日：2013-07-02

申请号：US13706311

申请日：2012-12-05

申请人： Guzik Technical Enterprises

发明人： Anatoli B. Stein ,  Semen P. Volfbeyn

IPC分类号： G11B5/09

CPC分类号： G11B20/10222 ,  G11B5/012 ,  G11B5/59616 ,  G11B5/746 ,  G11B20/1024 ,  G11B20/10435 ,  G11B2220/252

摘要： A write clock generator for use in writing data to a rotating patterned magnetic media disk is disclosed. The generator includes a magnetic read head for generating a succession of servo signals representative of succession of servo magnetization patterns detected from a corresponding succession of arcuate sectors along a circular data track on the disk. A preamble processor generates a corresponding succession of sector pair signals representative of the lengths of adjacent sectors along the data track on a rolling pair-wise basis. A next sector length predictor processor determines for a succession of pairs of sectors, a length ratio of the lengths of the sectors in the respective pairs of sectors. A clock generator generates a periodic clock for each sector of the succession of sectors, wherein the clock rate associated with a current sector has an associated phase deviation relative to a clock rate associated with a previous sector, which is proportional to the length ratio for the current sector and the previous sector.

摘要翻译： 公开了一种用于将数据写入旋转图案化磁介质盘的写时钟发生器。 该发生器包括一个磁读头，用于产生一系列伺服信号，该伺服信号代表沿着圆盘上的圆形数据轨道从相应的一系列弧形扇区中检测出的伺服磁化模式的连续。 前导处理器在滚动成对的基础上产生表示沿着数据轨道的相邻扇区的长度的相应连续的扇区对信号。 下一扇区长度预测器处理器确定一连串的扇区对，各扇区对中的扇区的长度的长度比。 时钟发生器为该连续扇区的每个扇区生成周期性时钟，其中与当前扇区相关联的时钟速率相对于与先前扇区相关联的时钟速率具有相关联的相位偏移，其与 当前行业和上一个行业。

公开(公告)号：US20130003214A1

公开(公告)日：2013-01-03

申请号：US13173088

申请日：2011-06-30

申请人： Jeffrey P. Grundvig ,  Jason D. Byrne ,  Jefferson Singleton

发明人： Jeffrey P. Grundvig ,  Jason D. Byrne ,  Jefferson Singleton

IPC分类号： G11B5/09

CPC分类号： G11B20/10435 ,  G11B5/59616 ,  G11B5/59627 ,  G11B19/045 ,  G11B2020/1282 ,  G11B2020/1287 ,  G11B2220/2516

摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a servo address mark count circuit, a user sync mark count circuit, and an offset calculation circuit. The servo address mark count circuit is operable to provide: a first count corresponding to a first servo address mark within a first track of a storage medium, a second count corresponding to a second servo address mark within the first track, a third count corresponding to a third servo address mark within a second track of the storage medium, and a fourth count corresponding to a fourth servo address mark within the second track. The user sync mark count circuit is operable to provide: a fifth count corresponding to a first user sync mark within the first track, and to provide a sixth count corresponding to a second user sync mark within the second track. The offset calculation circuit is operable to calculate an offset between the first track and the second track based at least in part on the first count, the second count, the third count, the fourth count, the fifth count, and the sixth count.

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。 作为示例，讨论了包括：伺服地址标记计数电路，用户同步标记计数电路和偏移计算电路的数据处理电路。 伺服地址标记计数电路可操作地提供：与存储介质的第一轨道内的第一伺服地址标记相对应的第一计数，对应于第一轨道内的第二伺服地址标记的第二计数，对应于 在存储介质的第二磁道内的第三伺服地址标记，以及对应于第二磁道内的第四伺服地址标记的第四计数。 用户同步标记计数电路可操作以提供：对应于第一轨道内的第一用户同步标记的第五计数，并且提供对应于第二轨道内的第二用户同步标记的第六计数。 偏移计算电路至少部分地基于第一计数，第二计数，第三计数，第四计数，第五计数和第六计数来计算第一轨道和第二轨道之间的偏移。

公开(公告)号：US20120131405A1

公开(公告)日：2012-05-24

申请号：US13301199

申请日：2011-11-21

申请人： Estuardo LICONA ,  Mats Oberg

发明人： Estuardo LICONA ,  Mats Oberg

IPC分类号： G06F11/07

CPC分类号： G11B20/10009 ,  G11B20/10027 ,  G11B20/10222 ,  G11B20/1037 ,  G11B20/10435 ,  G11B20/10481 ,  G11B27/36 ,  G11B2020/1823 ,  G11B2220/2537

摘要： A signal processing circuit includes a plurality of processing-circuit modules and a logic control circuit. The plurality of processing-circuit modules is configured to process an electrical signal. The plurality of processing-circuit modules has at least one processing parameter that is adaptively adjusted based on the electrical signal. The logic control circuit is configured to receive signals from the plurality of processing-circuit modules, validate the processing based on the received signals, and control a storage circuit to sample and store a value of the processing parameter when the processing is validated. Further, the logic control circuit is configured to control the storage circuit to maintain the value of processing parameter when the processing fails validation, and to control the storage circuit to recover the processing parameter in the plurality of processing-circuit modules to the stored value when the plurality of processing-circuit modules is disturbed by a defect.

摘要翻译： 信号处理电路包括多个处理电路模块和逻辑控制电路。 多个处理电路模块被配置为处理电信号。 多个处理电路模块具有至少一个基于电信号自适应地调整的处理参数。 逻辑控制电路被配置为从多个处理电路模块接收信号，基于接收到的信号来验证处理，并且当处理被验证时，控制存储电路采样并存储处理参数的值。 此外，逻辑控制电路被配置为当处理未通过验证时控制存储电路来维持处理参数的值，并且控制存储电路将多个处理电路模块中的处理参数恢复为存储值 多个处理电路模块受到缺陷的干扰。