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61. 发明授权

US4414589A Embedded servo track following system and method for writing servo tracks 失效
标题翻译：嵌入式伺服跟踪系统和写入伺服磁道的方法
公开(公告)号：US4414589A
公开(公告)日：1983-11-08
申请号：US330855
申请日：1981-12-14
申请人： Theodore A. Oliver , David L. Nelson , Keat-Lye Chan
发明人： Theodore A. Oliver , David L. Nelson , Keat-Lye Chan
IPC分类号： G11B21/10 , G11B5/012 , G11B5/596 , G11B5/55 , G11B5/58 , G11B23/36 , G11B27/36
CPC分类号： G11B5/5965 , G11B5/012 , G11B5/59616
摘要： A servo track following system for positioning a moving read/write head relative to a magnetic storage disc. A plurality of servo tracks are recorded in sectors on the disc for identifying radial positions or informational tracks. The servo tracks have a nonuniform radial track density varying from more dense at the periphery of the disc to less dense at the interior, established with a method that allows the unique performance characteristics of the head to determine the actual spacing of the tracks. A clock track is written by writing a single pulse on a fixed clock track head, phase-lock looping to an intermediate clock track, which is written on a moving head, and then phase-lock looping up to the final clock track which is written on the fixed clock track head. Radial track density is then determined by moving a head to a limit stop and writing a reference track. Thereafter, the head is displaced an amount sufficient to reduce the amplitude of the reference track by a predetermined percentage which is related to the ultimate average track density. Thereafter, another reference track is written and the head is again stepped away from the second reference track an amount sufficient to again reduce the amplitude of the reference track by a predetermined percentage. This is continued until the disc is filled with reference tracks. If the average track density thus achieved is unsatisfactory, the reduction number is adjusted and the process is repeated. Once the correct reduction number is determined for a predetermined average track density, the servo tracks are written by alternatively writing servo and reference in alternating servo and informational sectors. The reduction number is used to determine the pitch of all tracks.
摘要翻译：一种用于相对于磁存储盘定位移动的读/写头的伺服跟踪系统。多个伺服磁道被记录在盘上的扇区中用于识别径向位置或信息轨迹。伺服轨道具有不均匀的径向轨道密度，从盘的周边处的密度变化到内部的较不密集，通过允许头部的独特性能特性来确定轨道的实际间距的方法来建立。通过在固定时钟轨道头上写入单个脉冲，将相位锁定循环到写入移动头的中间时钟轨道，然后锁相循环到写入的最后时钟轨迹来写入时钟轨迹在固定的时钟轨道头上。然后通过将头移动到限位停止并写入参考轨道来确定径向轨道密度。此后，头部移动足以使参考轨道的振幅减小与最终平均轨道密度相关的预定百分比的量。此后，写入另一个参考轨道，并且头部再次从第二参考轨道步行到足以将参考轨道的幅度再次减小预定百分比的量。这一直持续到光盘充满参考轨。如果这样实现的平均轨道密度不能令人满意，则调整减少次数并重复该过程。一旦对于预定的平均轨道密度确定了正确的减小数，则通过在交替的伺服和信息扇区中交替地写入伺服和参考来写入伺服轨迹。缩小数用于确定所有轨道的间距。

62. 发明授权

US4313140A Buried control signal recording systems and method 失效
标题翻译：埋地控制信号记录系统及方法
公开(公告)号：US4313140A
公开(公告)日：1982-01-26
申请号：US101379
申请日：1979-12-07
申请人： Steven D. Keidl
发明人： Steven D. Keidl
IPC分类号： G11B5/02 , G11B5/09 , G11B5/58 , G11B5/596 , G11B21/10
CPC分类号： G11B5/58 , G11B5/02 , G11B5/5965
摘要： A single gap transducer simultaneously senses recorded control or servo signals and records data signals. A magnetic medium used with this invention is preferably a single coating magnetic medium. During recording, the recording signal is appropriately subtracted from the readback signal for removing write signal effects on the readback signal. The servo signals are preferably deeply recorded into the magnetic coating whereas the data signals are preferably recorded in an outer surface portion of the magnetic coating.
摘要翻译：单个间隙传感器同时感测记录的控制或伺服信号并记录数据信号。本发明使用的磁性介质优选为单一涂覆磁性介质。在记录期间，从回读信号中适当地减去记录信号，以消除读回信号对回读信号的影响。伺服信号优选地深刻地记录到磁性涂层中，而数据信号优选地记录在磁性涂层的外表面部分中。

63. 发明授权

US3864741A Servo channel equalization network 失效
标题翻译：伺服通道均衡网络
公开(公告)号：US3864741A
公开(公告)日：1975-02-04
申请号：US37429473
申请日：1973-06-28
申请人： IBM
发明人： SCHWARZ THEODORE A
IPC分类号： G11B5/035 , G11B5/596 , G11B21/10
CPC分类号： G11B5/59627 , G11B5/035 , G11B5/5965
摘要： In a magnetic disk recording device, a special sector is recorded in the servo tracks at least once per revolution to provide a 100 percent off-track signal to move the heads toward the spindle and a 100 percent off-track signal to move the heads away from the spindle. These signals are compared and an automatic gain control circuit provided to equalize the signals. During the equalization period, the error signal output to the head actuator is suspended so that the heads are not actually moved.
摘要翻译：在磁盘记录装置中，特殊扇区每转至少一次记录在伺服磁道中，以提供100％的偏离磁道信号，使磁头向主轴移动，并将100％偏离磁道信号移动从主轴。将这些信号进行比较，并提供自动增益控制电路以均衡信号。在均衡期间，输出到头部致动器的误差信号被悬挂，使得头部实际上不移动。

64. 发明申请

US20160210992A1 Method Of Operating A Data Storage Apparatus And Data Storage Apparatus 有权
标题翻译：操作数据存储装置和数据存储装置的方法
公开(公告)号：US20160210992A1
公开(公告)日：2016-07-21
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.
摘要翻译：在本公开中，提供了一种操作数据存储装置的方法。该方法包括将数据信号写入数据存储装置的记录介质中的数据层的一部分。该方法还包括：在读取伺服数据时，确定由于由传感器头和记录介质的伺服层之间提供的数据层产生的干扰而产生的干扰值的数据层，基于数据信号确定的数据层耦合干扰值。该方法还包括将数据层耦合干扰值写入到记录介质上。提供了相应的数据存储装置。

65. 发明授权

US09384767B2 Generating position error signal based on data tracks for rotating magnetic data storage 有权
标题翻译：基于用于旋转磁数据存储的数据轨迹生成位置误差信号
公开(公告)号：US09384767B2
公开(公告)日：2016-07-05
申请号：US14867302
申请日：2015-09-28
申请人： Marvell World Trade LTD.
发明人： Mats Oberg , Gregory Burd
IPC分类号： G11B5/596 , G11B20/10 , G11B5/55
CPC分类号： G11B5/59622 , G11B5/5547 , G11B5/59611 , G11B5/59627 , G11B5/5965 , G11B20/10212 , G11B20/10305
摘要： A system including an inter-track interference detection module and a position error signal generation module. The inter-track interference detection module determines a first inter-track interference value based on a first signal from a first sensor positioned over a first track of a rotating storage medium. The first inter-track interference value indicates energy contributed by tracks adjacent to the first track compared to energy contributed by the first track. The inter-track interference detection module determines a second inter-track interference value based on a second signal from a second sensor positioned over a second track of the rotating storage medium. The second inter-track interference value indicates energy contributed by tracks adjacent to the second track compared to energy contributed by the second track. The position error signal generation module generates a position error signal based on the first inter-track interference value and the second inter-track interference value.
摘要翻译：一种包括轨道间干扰检测模块和位置误差信号生成模块的系统。轨道间干扰检测模块基于位于旋转存储介质的第一轨道上的第一传感器的第一信号来确定第一轨道间干扰值。第一轨道间干扰值表示与由第一轨道贡献的能量相比，与第一轨道相邻的轨道所贡献的能量。轨道间干扰检测模块基于位于旋转存储介质的第二轨道上的第二传感器的第二信号来确定第二轨道间干扰值。第二轨道间干扰值指示与由第二轨道贡献的能量相比较的与第二轨道相邻的轨道所贡献的能量。位置误差信号产生模块基于第一轨道间干扰值和第二轨道间干扰值产生位置误差信号。

66. 发明授权

US09153264B1 Method and apparatus for determining radial incoherence between servo tracks 有权
标题翻译：用于确定伺服磁道之间径向相干性的方法和装置
公开(公告)号：US09153264B1
公开(公告)日：2015-10-06
申请号：US14563578
申请日：2014-12-08
申请人： Marvell International Ltd.
发明人： Mats Oberg , Richard Travis Behrens
IPC分类号： G11B5/596
CPC分类号： G11B5/59655 , G11B5/59627 , G11B5/59633 , G11B5/59638 , G11B5/5965 , G11B5/59672
摘要： A method of operating or calibrating a storage device having a storage medium platter includes writing servo data to the storage medium platter, where the servo data include, for each track on the storage medium platter, a servo sync mark, and a repeating pattern. For each pair of adjacent tracks on the storage medium platter, the repeating patterns, which may be orthogonal, are compared to determine relative phase of the repeating patterns on adjacent tracks. The relative phase for each pair of adjacent tracks is recorded. In another calibration method, first and second repeating patterns may compared to determine whether relative phase of the first and second repeating patterns exceeds a threshold, in which case the second servo data are erased, new second servo data are written, and the comparing and erasing are repeated until the relative phase of the first and second repeating patterns is less than the threshold.
摘要翻译：一种操作或校准具有存储介质盘的存储装置的方法包括将伺服数据写入存储介质盘，其中对于存储介质盘上的每个轨道，伺服数据包括伺服同步标记和重复模式。对于存储介质盘上的每对相邻轨道，可以将可以是正交的重复图案进行比较，以确定相邻轨道上重复图案的相对相位。记录每对相邻轨道的相对相位。在另一种校准方法中，可以比较第一和第二重复图案以确定第一和第二重复图案的相对相位是否超过阈值，在这种情况下擦除第二伺服数据，写入新的第二伺服数据，以及比较和擦除直到第一和第二重复图案的相对相位小于阈值。

67. 发明授权

US09147419B2 Generating position error signal based on data tracks for magnetic data storage 有权
标题翻译：根据磁数据存储的数据轨迹生成位置误差信号
公开(公告)号：US09147419B2
公开(公告)日：2015-09-29
申请号：US14499819
申请日：2014-09-29
申请人： Marvell World Trade Ltd.
发明人： Mats Oberg , Gregory Burd
IPC分类号： G11B5/596 , G11B20/10 , G11B5/55
CPC分类号： G11B5/59622 , G11B5/5547 , G11B5/59611 , G11B5/59627 , G11B5/5965 , G11B20/10212 , G11B20/10305
摘要： A hard disk drive circuit includes first and second inter-track interference detection modules. The first inter-track interference detection module is configured to generate a first measured inter-track interference value based on a first read signal from a first read sensor positioned over a magnetic medium. The second inter-track interference detection module is configured to generate a second measured inter-track interference value based on a second read signal from a second read sensor positioned over the magnetic medium. A position error signal generation module is configured to generate a position error signal based on the first measured inter-track interference value and the second measured inter-track interference value. An arm control module is configured to control rotation of an arm in response to the position error signal. The first read sensor and the second read sensor are located at a distal end of the arm.
摘要翻译：硬盘驱动电路包括第一和第二轨道间干扰检测模块。第一轨道间干扰检测模块被配置为基于位于磁介质上的第一读取传感器的第一读取信号产生第一测量的轨道间干扰值。第二轨道间干扰检测模块被配置为基于位于磁介质上的第二读取传感器的第二读取信号产生第二测量的轨道间干扰值。位置误差信号生成模块被配置为基于第一测量的轨道间干扰值和第二测量的轨道间干扰值来产生位置误差信号。臂控制模块被配置为响应于位置误差信号来控制臂的旋转。第一读取传感器和第二读取传感器位于臂的远端。

68. 发明申请

US20150092289A1 GENERATING POSITION ERROR SIGNAL BASED ON DATA TRACKS FOR MAGNETIC DATA STORAGE 有权
标题翻译：基于用于磁数据存储的数据跟踪产生位置错误信号
公开(公告)号：US20150092289A1
公开(公告)日：2015-04-02
申请号：US14499819
申请日：2014-09-29
申请人： Marvell World Trade Ltd.
发明人： Mats OBERG , Gregory BURD
IPC分类号： G11B20/10 , G11B5/596
CPC分类号： G11B5/59622 , G11B5/5547 , G11B5/59611 , G11B5/59627 , G11B5/5965 , G11B20/10212 , G11B20/10305
摘要： A hard disk drive circuit includes first and second inter-track interference detection modules. The first inter-track interference detection module is configured to generate a first measured inter-track interference value based on a first read signal from a first read sensor positioned over a magnetic medium. The second inter-track interference detection module is configured to generate a second measured inter-track interference value based on a second read signal from a second read sensor positioned over the magnetic medium. A position error signal generation module is configured to generate a position error signal based on the first measured inter-track interference value and the second measured inter-track interference value. An arm control module is configured to control rotation of an arm in response to the position error signal. The first read sensor and the second read sensor are located at a distal end of the arm.
摘要翻译：硬盘驱动电路包括第一和第二轨道间干扰检测模块。第一轨道间干扰检测模块被配置为基于位于磁介质上的第一读取传感器的第一读取信号产生第一测量的轨道间干扰值。第二轨道间干扰检测模块被配置为基于位于磁介质上的第二读取传感器的第二读取信号产生第二测量的轨道间干扰值。位置误差信号生成模块被配置为基于第一测量的轨道间干扰值和第二测量的轨道间干扰值来产生位置误差信号。臂控制模块被配置为响应于位置误差信号来控制臂的旋转。第一读取传感器和第二读取传感器位于臂的远端。

69. 发明授权

US07870346B2 Servo controller interface module for embedded disk controllers 有权
标题翻译：伺服控制器接口模块，用于嵌入式磁盘控制器
公开(公告)号：US07870346B2
公开(公告)日：2011-01-11
申请号：US10796727
申请日：2004-03-09
申请人： Larry L. Byers , David M. Purdham , Michael R. Spaur
发明人： Larry L. Byers , David M. Purdham , Michael R. Spaur
IPC分类号： G06F12/00 , G06F13/18
CPC分类号： G11B5/596 , G11B5/5521 , G11B5/5965 , G11B19/28
摘要： An embedded disk controller (“controller”) having a servo controller is provided. The controller also includes a servo controller interface with a speed matching module and a pipeline control module such that at least two processors share memory mapped registers without conflicts. The processors operate at different frequencies, while the servo-controller and the servo controller interface operate in same or different frequency domains. The pipeline control module resolves conflict between the first and second processor transaction. The speed matching module ensures communication without inserting wait states in a servo controller interface clock domain for write access to the servo controller and there is no read conflicts between the first and second processor. The controller also includes a hardware mechanism for indivisible register acess to the first or second processor. The hardware mechanisim includes a hard semaphore and/or soft semaphore.
摘要翻译：提供具有伺服控制器的嵌入式盘控制器（“控制器”）。控制器还包括具有速度匹配模块和流水线控制模块的伺服控制器接口，使得至少两个处理器共享存储器映射寄存器而没有冲突。处理器以不同的频率工作，而伺服控制器和伺服控制器接口在相同或不同的频域工作。流水线控制模块解决了第一和第二处理器事务之间的冲突。速度匹配模块确保通信而不在伺服控制器接口时钟域中插入等待状态，以便对伺服控制器进行写访问，并且第一和第二处理器之间没有读取冲突。控制器还包括用于不可分割寄存器访问第一或第二处理器的硬件机构。硬件机制包括硬信号量和/或软信号量。

70. 发明申请

US20100002325A1 EMBEDDED TRACK INFORMATION FOR PATTERNED MEDIA 有权
标题翻译：嵌入式媒体信息
公开(公告)号：US20100002325A1
公开(公告)日：2010-01-07
申请号：US12166913
申请日：2008-07-02
申请人： Mark David Bedillion
发明人： Mark David Bedillion
IPC分类号： G11B20/08 , G11B5/82
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 regular bit-islands having a first size and large bit-islands having a second size. The placement of the regular bit-islands and large bit-islands within each data track results in a unique pattern. An amplitude-modulated readback signal is generated in response to a transducer head moving over the bit-patterned media. Based on the amplitude-modulated readback signal, channel response circuitry detects the pattern of regular bit-islands and large bit-islands associated with a particular data track. Based on the detected pattern, the channel response circuitry is able to uniquely identify the data track.
摘要翻译：位图形磁介质（BPM）包括关于每个数据轨道具有第一尺寸的规则位岛和具有第二尺寸的大比特岛。在每个数据轨道内布置常规的比特岛和大的比特岛可以产生独特的模式。响应于在位图案介质上移动的换能器头而产生幅度调制回读信号。基于幅度调制的回读信号，信道响应电路检测与特定数据轨道相关联的常规位岛和大比特岛的模式。基于检测到的模式，信道响应电路能够唯一地识别数据轨道。

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