公开(公告)号：US20060007584A1

公开(公告)日：2006-01-12

申请号：US11003605

申请日：2004-12-03

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B21/02

CPC classification number: G11B5/59633 ,  G11B5/59666

Abstract: A two-step self-servowriting process first writes an intermediate pattern based on a reference pattern, and then writes a final pattern based on the intermediate pattern, wherein the reference pattern can be a printed media or a spiral pattern. Such an approach can be utilized to reduce the noise/runout, eliminate timing eccentricity, and increase the sample rate of the final pattern. In addition, a disk drive containing multiple rotatable disks can perform two-step self servowriting using either a per-cylinder process to further improve written-in runout. In such a process, intermediate servo patterns can be written via each head in the drive, and the final servo patterns can be written and/or re-written via each head at one time based on an optimal intermediate pattern. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

Abstract translation: 两步自伺服过程首先根据参考模式写入中间模式，然后基于中间模式写入最终模式，其中参考模式可以是打印介质或螺旋模式。 可以利用这种方法来减少噪声/跳动，消除定时偏心，并且增加最终图案的采样率。 此外，包含多个可旋转磁盘的磁盘驱动器可以使用每缸进程执行两步自伺服驱动，以进一步提高写入跳动。 在这种过程中，可以通过驱动器中的每一个头部写入中间伺服模式，并且可以基于最佳中间模式一次通过每个头部来写和/或重写最终的伺服模式。 本说明书不是对本发明的完整描述或限制本发明的范围。 本发明的其它特征，方面和目的可以通过对说明书，附图和权利要求的评述来获得。

公开(公告)号：US20050280916A1

公开(公告)日：2005-12-22

申请号：US10871824

申请日：2004-06-18

Applicant: Gary Calfee ,  Richard Ehrlich

Inventor： Gary Calfee ,  Richard Ehrlich

IPC: G11B5/596 ,  G11B21/02

CPC classification number: G11B5/59633

Abstract: Systems and data storage devices in accordance with embodiments of the present invention can execute instructions to determine a width of a data stroke along a rotatable medium. In one embodiment, the width can be determined by measuring a distance from a marker zone edge of a template pattern on the rotatable medium to a ramp positioned adjacent to the rotatable medium or near the inner diameter of the rotatable medium, and measuring a distance from the marker zone edge to a crash stop. A track layout can be determined based on the width of the data stroke.

Abstract translation: 根据本发明的实施例的系统和数据存储设备可以执行指令以确定沿着可旋转介质的数据笔画的宽度。 在一个实施例中，可以通过测量从可旋转介质上的模板图案的标记区边缘到邻近可旋转介质定位的斜面或靠近可旋转介质的内径的距离来测量宽度，并且测量距离 标记区边缘到崩溃停止。 可以根据数据笔画的宽度来确定曲目布局。

公开(公告)号：US20050237653A1

公开(公告)日：2005-10-27

申请号：US10818175

申请日：2004-04-05

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B5/596 ,  G11B21/02

CPC classification number: G11B5/59633 ,  G11B5/59666

Abstract: The amount of position error written into a servo burst pattern can be reduced by using additional media revolutions to write the pattern. Where the edges of two servo bursts are used to define a position on the media, trimming the first burst and writing the second burst on separate revolutions will result in a different amount of position error being written into each burst. The end result will be a reduction in the overall error in position information. In order to further reduce the position error given by a burst pair, each burst also can be trimmed and/or written in multiple passes. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

Abstract translation: 通过使用额外的介质转数来写入图案，可以减少写入伺服突发图案的位置误差量。 在两个伺服脉冲串的边缘用于限定介质上的位置的情况下，修整第一个脉冲串并以不同的转数写入第二个脉冲串将导致不同量的位置误差被写入每个脉冲串。 最终结果将是减少位置信息的总体错误。 为了进一步减少由突发对给出的位置误差，每个突发也可以被多次修剪和/或写入。 本说明书不是对本发明的完整描述或限制本发明的范围。 本发明的其它特征，方面和目的可以通过对说明书，附图和权利要求的评述来获得。

公开(公告)号：US20050237650A1

公开(公告)日：2005-10-27

申请号：US10897313

申请日：2004-07-22

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B5/596 ,  G11B19/04 ,  G11B21/02

CPC classification number: G11B5/59633 ,  G11B5/59638 ,  G11B5/59655

Abstract: To account for head misplacement while servowriting, conditional writing and/or trimming of servo information can be used. Conditional servowriting allows servowriting to be disabled when it is determined that servo information will not be written and/or trimmed at a desired location or within a threshold distance of a desired location. For example, if a distance between a write element or a predicted location of servo information and a desired location of the servo information or write element exceeds a threshold, writing and/or trimming can be inhibited. Servowriting can be resumed when it is determined that servo information will be written or trimmed at a desired location or within a threshold distance of a desired location. A servowriting step or pass is not re-started when the threshold is exceeded and those wedges for which servo information was not written and/or trimmed can be attempted during subsequent revolutions of the rotatable storage medium. Various methods can also be used to account for servo information that is not written and/or trimmed after a number of revolutions, including increasing threshold(s), writing and/or trimming unconditionally, and re-computing WORF values for a reference disk. Additionally, other techniques including write current variation and individual passes for writing and trimming can be used with various embodiments using conditional writing techniques.

Abstract translation: 为了在伺服驱动时考虑头部错位，可以使用伺服信息的条件写入和/或修整。 当确定伺服信息将不会在期望位置或所需位置的阈值距离内被写入和/或修剪时，条件伺服驱动允许禁用伺服驱动。 例如，如果写入元件或伺服信息的预测位置与伺服信息或写入元件的期望位置之间的距离超过阈值，则可以抑制写入和/或修整。 当确定伺服信息将在期望位置或期望位置的阈值距离内被写入或修剪时，可以恢复伺服。 当超过阈值时，伺服驱动步骤或通过不能重新启动，并且可以在可旋转存储介质的后续转动期间尝试那些没有写入和/或修剪伺服信息的楔形物。 还可以使用各种方法来解释在数次转动之后未被写入和/或修剪的伺服信息，包括增加阈值，无条件地编写和/或修剪以及重新计算参考盘的WORF值。 此外，包括写入电流变化和用于写入和修剪的单独通路的其它技术可以使用条件写入技术与各种实施例一起使用。

公开(公告)号：US20050237649A1

公开(公告)日：2005-10-27

申请号：US10819089

申请日：2004-04-06

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B5/596 ,  G11B19/04 ,  G11B21/02

CPC classification number: G11B5/59633 ,  G11B5/59638

Abstract: To account for head misplacement while servowriting, conditional writing and/or trimming of servo information can be used. Conditional servowriting allows servowriting to be disabled when it is determined that servo information will not be written and/or trimmed at a desired location or within a threshold distance of a desired location. For example, if a distance between a write element or a predicted location of servo information and a desired location of the servo information or write element exceeds a threshold, writing and/or trimming can be inhibited. Servowriting can be resumed when it is determined that servo information will be written or trimmed at a desired location or within a threshold distance of a desired location. A servowriting step or pass is not re-started when the threshold is exceeded and those wedges for which servo information was not writtten and/or trimmed can be attempted during subsequent revolutions of the rotatable storage medium.

Abstract translation: 为了在伺服驱动时考虑头部错位，可以使用伺服信息的条件写入和/或修整。 当确定伺服信息将不会在期望位置或所需位置的阈值距离内被写入和/或修剪时，条件伺服驱动允许禁用伺服驱动。 例如，如果写入元件或伺服信息的预测位置与伺服信息或写入元件的期望位置之间的距离超过阈值，则可以抑制写入和/或修整。 当确定伺服信息将在期望位置或期望位置的阈值距离内被写入或修剪时，可以恢复伺服。 当超过阈值时，伺服驱动步骤或通过不会被重新启动，并且可以在可旋转存储介质的后续转动期间尝试那些伺服信息没有被扭曲和/或修剪的楔形物。

公开(公告)号：US20050141375A1

公开(公告)日：2005-06-30

申请号：US11012365

申请日：2004-12-15

Applicant: Richard Ehrlich ,  Thorsten Schmidt ,  Brian Tanner

Inventor： Richard Ehrlich ,  Thorsten Schmidt ,  Brian Tanner

IPC: G11B20060101 ,  G11B5/09 ,  G11B7/00 ,  G11B19/02 ,  G11B19/26

CPC classification number: G11B19/26 ,  G11B5/09 ,  G11B19/02

Abstract: A rotatable media storage device operates using multiple disk spin-speeds, e.g., a reduced spin-speed and a nominal spin-speed. A disk is spun up to a reduced spin-speed and an initial data transfer is began while the disk spins at the reduced spin-speed, if an amount of work that has been requested is below a threshold. The disk is spun up to a further spin-speed (e.g., a nominal spin-speed), which is greater than the reduced spin-speed, and the initial data transfer is began while the disk spins at the further spin-speed, if the amount of work that has been requested is above the threshold. Alternative embodiments using multiple disk spin-speeds are also provided.

Abstract translation: 可旋转介质存储设备使用多个盘旋转速度进行操作，例如降低的旋转速度和标称旋转速度。 如果所请求的工作量低于阈值，则磁盘旋转到降低的旋转速度，并且当磁盘以降低的旋转速度旋转时，开始初始数据传送。 磁盘旋转到另外的旋转速度（例如，额定旋转速度），其大于降低的旋转速度，并且当磁盘以更高的旋转速度旋转时，初始数据传输开始，如果 所要求的工作量高于门槛。 还提供了使用多个盘旋转速度的替代实施例。

公开(公告)号：US20050013027A1

公开(公告)日：2005-01-20

申请号：US10620971

申请日：2003-07-16

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B5/09 ,  G11B5/55 ,  G11B5/596 ,  G11B20/08

CPC classification number: G11B5/5521 ,  G11B5/59655

Abstract: Methods for searching for a servo address mark (SAM) pattern using multiple sets of servo demodulation detection parameters are provided. A SAM pattern is searched for using a first set of servo demodulation detection parameters. The SAM pattern is also searched for using a second set of servo demodulation parameters, wherein at least one servo demodulation parameter in the second set is different than a corresponding parameter in the first set. Example servo demodulation parameters include staring servo automatic gain control (AGC) values and starting servo phase lock loop (PLL) values.

Abstract translation: 提供了使用多组伺服解调检测参数来搜索伺服地址标记（SAM）模式的方法。 使用第一组伺服解调检测参数来搜索SAM模式。 还使用第二组伺服解调参数搜索SAM模式，其中第二组中的至少一个伺服解调参数不同于第一组中的相应参数。 示例伺服解调参数包括伺服自动增益控制（AGC）值和启动伺服锁相环（PLL）值。

公开(公告)号：US20070171564A1

公开(公告)日：2007-07-26

申请号：US11338359

申请日：2006-01-23

Applicant: Richard Ehrlich ,  David Rutherford

Inventor： Richard Ehrlich ,  David Rutherford

IPC: G11B5/596 ,  G11B21/02

CPC classification number: G11B5/59688

Abstract: A disk drive includes a disk having a first servo burst written with advancing phase as a radial distance on the disk increases, and a second servo burst written with decreasing phase as a radial distance on the disk increases, and a transducing head, and a read channel. The disk drive also includes an element for shifting the phase of the signal produced by the first burst pattern with respect to the signal produced by the second burst pattern by an amount sufficient to substantially cancel distortion in a signal produced by the first servo burst with distortion in a signal produced by the second servo burst when the signal from the first servo burst is added to the signal from the second servo burst.

Abstract translation: 磁盘驱动器包括具有当前进相位写入的第一伺服脉冲串的盘，其中盘上的径向距离增加，并且随着盘上的径向距离而以递减相位写入的第二伺服脉冲串增加，并且传感头和读取 渠道。 磁盘驱动器还包括用于将由第一突发模式产生的信号的相位相对于由第二突发模式产生的信号相位相移的元素，该量足以基本上消除由具有失真的第一伺服脉冲串产生的信号中的失真 当来自第一伺服脉冲串的信号被加到来自第二伺服脉冲串的信号时，由第二伺服脉冲串产生的信号。

公开(公告)号：US20070109680A1

公开(公告)日：2007-05-17

申请号：US11620378

申请日：2007-01-05

Applicant: Richard Ehrlich

Inventor： Richard Ehrlich

IPC: G11B21/02 ,  G11B5/596

CPC classification number: G11B5/59633 ,  G11B5/59655 ,  G11B5/59666

Abstract: The amount of position error written into a servo burst pattern can be reduced by using additional media revolutions to write the pattern. Where servo bursts are used to define a position on the media, trimming a first burst and writing a second burst on separate revolutions of the media will result in a different amount of position error being written into each burst. The end result will be a reduction in the overall error in position information. In order to further reduce the position error given by a combination of bursts, each burst also can be trimmed and/or written in multiple passes. The overall error in position should decrease as the number of passes used to write a burst combination increases. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

Abstract translation: 通过使用额外的介质转数来写入图案，可以减少写入伺服突发图案的位置误差量。 在使用伺服突发来定义介质上的位置的情况下，修剪第一个突发并且在介质的分开的转数上写入第二个突发将导致不同量的位置误差被写入每个突发。 最终结果将是减少位置信息的总体错误。 为了进一步减少由脉冲串组合给出的位置误差，每个脉冲串也可以被多次修整和/或写入。 随着用于写入突发组合的通过次数增加，位置的总体误差将减小。 本说明书不是对本发明的完整描述或限制本发明的范围。 本发明的其它特征，方面和目的可以通过对说明书，附图和权利要求的评述来获得。

公开(公告)号：US20060218361A1

公开(公告)日：2006-09-28

申请号：US11090458

申请日：2005-03-25

Applicant: Richard Ehrlich ,  Fernando Zayas

Inventor： Richard Ehrlich ,  Fernando Zayas

IPC: G06F13/00

CPC classification number: G06F3/0659 ,  G06F3/0617 ,  G06F3/0632 ,  G06F3/0676

Abstract: An electronic storage device provides rapid data availability. The rapid data availability relates to sequences of reads and writes performed by the ESD responsive to critical events, such as power-up sequences or sequences of read and/or write operations. A sequence of reads is performed upon detecting a critical event. A record of reads to be performed is maintained in a reserved area of the disk. In the case of similar but different events, such as host power-up from an off state and host power-up from a hibernation state, different read and write sequences are performed for each scenario. Improvements to the sequence of reads and/or writes may be determined, thereby enabling the ESD to improve its response to critical events over time.

Abstract translation: 电子存储设备提供快速的数据可用性。 快速数据可用性涉及由ESD响应于关键事件（例如上电序列或读取和/或写入操作的序列）执行的读取和写入序列。 在检测到关键事件时执行读取序列。 要执行的读取记录保留在磁盘的保留区域中。 在类似但不同的事件（例如从关闭状态的主机上电以及从休眠状态的主机上电）的情况下，针对每个场景执行不同的读取和写入序列。 可以确定对读取和/或写入序列的改进，从而使ESD能够随着时间改进其对关键事件的响应。