公开(公告)号：US07518817B1

公开(公告)日：2009-04-14

申请号：US11484864

申请日：2006-07-10

申请人： Arun Balakrishnan ,  John VanLaanen ,  Leo Lopez ,  John Shaw ,  Bruce D. Buch ,  Claud L. Blevins

发明人： Arun Balakrishnan ,  John VanLaanen ,  Leo Lopez ,  John Shaw ,  Bruce D. Buch ,  Claud L. Blevins

IPC分类号： G11B15/46

CPC分类号： G11B33/1493

摘要： A disk drive having reduced electromagnetic emission quasi-peaks is provided. The repetition rate of servo blocks or data is reduced, spread or otherwise altered. In one embodiment, the number of data zones is increased to achieve an emissions reduction goal. In one embodiment, the disk drive is configured to effectively have one track per zone. In one embodiment, the rotation rate of the disk is varied or the effective data bit density, as detected by the read/write head, is otherwise varied. In one embodiment, servo-sectors are intentionally positioned to vary the length, along the track, of inter-servo intervals.

摘要翻译： 提供具有减小的电磁发射准峰值的磁盘驱动器。 伺服块或数据的重复率降低，扩展或以其他方式改变。 在一个实施例中，增加了数据区的数量以实现减排目标。 在一个实施例中，盘驱动器被配置成每个区域有效地具有一个轨道。 在一个实施例中，盘的旋转速率是变化的，或者由读/写头检测到的有效数据位密度被改变。 在一个实施例中，伺服扇区被有意地定位成沿着轨道改变伺服间间隔的长度。

公开(公告)号：US07623313B1

公开(公告)日：2009-11-24

申请号：US10859062

申请日：2004-06-02

申请人： Bruce Liikanen ,  John Seabury ,  John VanLaanen

发明人： Bruce Liikanen ,  John Seabury ,  John VanLaanen

IPC分类号： G11B21/02 ,  G11B5/09

CPC分类号： G11B5/59627 ,  G11B5/59633 ,  G11B5/59661 ,  G11B5/59666 ,  G11B5/59688

摘要： The present invention is directed to a method and apparatus for performing a self-servo write operation in a disk drive. In one embodiment, the disk drive includes a disk surface having a read head and a write head associated therewith. Spiral servo information is written onto the disk surface in a closed-loop fashion through use of a servo track writer. The read head reads the spiral servo information and is used to position the write head, which writes final servo information onto the disk surface. The final servo information may be embedded servo information. The final servo information that has been written onto the disk surface looks substantially identical to a disk surface that has had its final servo patterns written using a servo track writer.

摘要翻译： 本发明涉及一种用于在磁盘驱动器中执行自伺服写入操作的方法和装置。 在一个实施例中，盘驱动器包括具有读头的盘表面和与其相关联的写头。 通过使用伺服记录器将螺旋伺服信息以闭环方式写入磁盘表面。 读头读取螺旋伺服信息，用于定位写磁头，写磁头将最终伺服信息写入磁盘表面。 最终的伺服信息可以是嵌入的伺服信息。 已写入磁盘表面的最终伺服信息看起来与使用伺服记录器写入其最终伺服模式的磁盘表面大致相同。

公开(公告)号：US07019937B1

公开(公告)日：2006-03-28

申请号：US10858839

申请日：2004-06-02

申请人： Bruce Liikanen ,  John VanLaanen ,  Steve Ward

发明人： Bruce Liikanen ,  John VanLaanen ,  Steve Ward

IPC分类号： G11B5/596 ,  G11B21/02

CPC分类号： G11B5/596 ,  G11B5/59661

摘要： The present invention is directed to method and apparatus for determining a transducer's reference position in a disk drive having a disk surface with spiral servo information written thereon. The transducer comprises a read head for reading spiral servo information and a read signal envelope is generated when the read head reads the spiral servo information. An integration is performed over a first integration window, wherein the first integration window includes a read signal envelope. A reference position is determined for the read head using a second integration window (virtual integration window) that is included within, and smaller than, the first integration window. In one embodiment, the integration may be performed on a frame-by-frame basis. A determination may be made of the frame in the first integration window that includes a maximum sync amplitude. The second integration window may be centered using the frame that includes the maximum sync amplitude.

摘要翻译： 本发明涉及用于确定具有写在其上的具有螺旋伺服信息的盘表面的盘驱动器中的换能器参考位置的方法和装置。 换能器包括用于读取螺旋伺服信息的读取头，并且当读取头读取螺旋伺服信息时产生读取信号包络线。 在第一积分窗口上执行积分，其中第一积分窗口包括读信号包络。 使用包括在第一积分窗口内并且小于第一积分窗口的第二积分窗口（虚拟积分窗口）为读取头确定参考位置。 在一个实施例中，集成可以逐帧地执行。 可以对包括最大同步幅度的第一积分窗口中的帧进行确定。 第二积分窗口可以使用包括最大同步幅度的帧居中。

公开(公告)号：US07184241B1

公开(公告)日：2007-02-27

申请号：US11157587

申请日：2005-06-21

申请人： Michael Mallary ,  Yan Wu ,  John VanLaanen ,  Bruce Buch ,  Jeffrey V DeRosa

发明人： Michael Mallary ,  Yan Wu ,  John VanLaanen ,  Bruce Buch ,  Jeffrey V DeRosa

IPC分类号： G11B5/596 ,  G11B5/02 ,  G11B15/18

CPC分类号： G11B5/024 ,  G11B5/40

摘要： A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a controller. The transducer is configured to read and write data on the disk. The actuator is configured to position the transducer relative to defined portions of the disk. The controller is configured to write a predetermined magnetic polarity pattern on a buffer portion of the disk to erase data thereon. The controller also determines whether the disk drive has reached a threshold operating temperature, and to selectively direct data from a host device, which is addressed for an associated original block address on the disk, to be written to the buffer portion of the disk when the disk drive has not reached the threshold operating temperature. The controller later copies the data from the buffer portion of the disk to the original block address on the disk and then erases the data from the buffer portion of the disk.

摘要翻译： 磁盘驱动器包括可旋转数据存储盘，换能器，致动器和控制器。 传感器配置为在磁盘上读取和写入数据。 致动器被配置成相对于盘的限定部分定位换能器。 控制器被配置为在盘的缓冲部分上写入预定的磁极性图案以在其上擦除数据。 控制器还确定磁盘驱动器是否已经达到阈值工作温度，并选择性地将来自主机设备的数据（其被寻址用于磁盘上相关联的原始块地址）写入到盘的缓冲部分中 磁盘驱动器尚未达到阈值工作温度。 控制器稍后将数据从磁盘的缓冲部分复制到磁盘上的原始块地址，然后从磁盘的缓冲区擦除数据。

公开(公告)号：US07154689B1

公开(公告)日：2006-12-26

申请号：US10945371

申请日：2004-09-20

申请人： Stanley H. Shepherd ,  Yu Sun ,  Lin Guo ,  John VanLaanen

发明人： Stanley H. Shepherd ,  Yu Sun ,  Lin Guo ,  John VanLaanen

IPC分类号： G11B5/09

CPC分类号： G11B5/59688

摘要： Methods for making a disk drive, apparatus for writing servo bursts on a disk, and disk drive apparatus are provided. The disk drive includes a disk and transducer adjacent to the disk. The transducer includes a read element and a write element. A width of the read element is determined. A servo track pitch is determined based on the read element width. Servo bursts are written in servo tracks on the disk with the write element based on the servo track pitch.

摘要翻译： 提供了制造磁盘驱动器的方法，用于在盘上写入伺服脉冲串的装置以及磁盘驱动装置。 磁盘驱动器包括与磁盘相邻的磁盘和传感器。 换能器包括读取元件和写入元件。 读取元素的宽度被确定。 基于读取的元件宽度确定伺服轨道间距。 伺服脉冲串写入磁盘上的伺服磁道，其中写入元件基于伺服磁道间距。

公开(公告)号：US06185059B2

公开(公告)日：2001-02-06

申请号：US09219685

申请日：1998-12-23

申请人： Bruce Buch ,  John VanLaanen

发明人： Bruce Buch ,  John VanLaanen

IPC分类号： G11B509

CPC分类号： G11B5/5965

摘要： A method of controlling a disk drive that reduces the space on the data storage surface of a storage disk otherwise effectively required to be taken up by embedded servo sectors. In disk drives employing wide-writer, narrow-reader, dual element heads, each servo burst field ends with a burst correction value (BCV) field. This BCV field enables the wide-writer head to be accurately positioned within track boundaries before writing begins to the data sector following a servo sector. The present invention takes advantage of the fact that burst correction values are only required by the head incident to data writing operations. Since a finite settle time is required to switch the read channel from servo mode to user data mode, and since the BCV field is not needed for reading operations, mode switching and channel settling can begin while the head is still passing over the BCV field. Sooner switch over from servo mode to user data read mode means that the blanking interval, and concomitant disk space, heretobefore required by the prior art approach, is completely avoided by the new disk drive control method.

摘要翻译： 一种控制磁盘驱动器的方法，其减少存储盘的数据存储表面上的空间，否则有效地需要被嵌入式伺服扇区占用。 在采用宽写入器，窄读取器，双元件头的磁盘驱动器中，每个伺服突发字段以突发校正值（BCV）字段结束。 该BCV字段使得宽写入器头可以在写入开始于跟随伺服扇区的数据扇区之后准确地定位在轨道边界内。 本发明利用了突发校正值仅仅是头部事件对数据写入操作的要求。 由于需要将读取通道从伺服模式切换到用户数据模式的有限稳定时间，并且由于读取操作不需要BCV场，当头仍然通过BCV场时，模式切换和通道建立可以开始。 从伺服模式更快地切换到用户数据读取模式意味着现有技术方法所要求的消隐间隔和伴随的磁盘空间通过新的磁盘驱动器控制方法完全避免。

公开(公告)号：US07382564B1

公开(公告)日：2008-06-03

申请号：US10858846

申请日：2004-06-02

申请人： Tim Everett ,  John VanLaanen ,  Howard Barlow ,  Robert L. Metz

发明人： Tim Everett ,  John VanLaanen ,  Howard Barlow ,  Robert L. Metz

IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B5/09

CPC分类号： G11B5/5556 ,  G11B5/59616 ,  G11B5/59661 ,  G11B5/59688

摘要： Various embodiments of the present invention are generally directed to processing servo data on a storage surface by detecting a time difference between consecutive read signal envelopes from spiral servo information on the surface.

摘要翻译： 本发明的各种实施例一般涉及通过从表面上的螺旋伺服信息检测连续的读取信号包络之间的时间差来在存储表面上处理伺服数据。

公开(公告)号：US20080030894A1

公开(公告)日：2008-02-07

申请号：US11740747

申请日：2007-04-26

申请人： YU SUN ,  Dave McMurtrey ,  Bruce Liikanen ,  Don Brunnett ,  John VanLaanen ,  Charles Watt ,  Stanley Shepherd ,  S. Smith ,  Todd Franks ,  Lin Guo

发明人： YU SUN ,  Dave McMurtrey ,  Bruce Liikanen ,  Don Brunnett ,  John VanLaanen ,  Charles Watt ,  Stanley Shepherd ,  S. Smith ,  Todd Franks ,  Lin Guo

IPC分类号： G11B17/08

CPC分类号： G11B25/043 ,  G11B5/59627 ,  G11B5/59661 ,  G11B5/59666

摘要： In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.

摘要翻译： 根据各种实施例，可旋转构件安装到主轴毂，使得先前提供给可旋转构件的初始伺服数据相对于主轴毂的旋转中心偏心偏移。 确定补偿值以表征所述偏移，之后相对于初始伺服数据和确定的补偿值将最终伺服数据提供给可旋转构件。 最终伺服数据名义上与主轴毂的旋转中心同心。

公开(公告)号：US07233455B1

公开(公告)日：2007-06-19

申请号：US10859058

申请日：2004-06-02

申请人： David Rewerts ,  Bruce Liikanen ,  John VanLaanen

发明人： David Rewerts ,  Bruce Liikanen ,  John VanLaanen

IPC分类号： G11B21/02 ,  G11B5/09

CPC分类号： G11B5/59688 ,  G11B5/59661 ,  G11B5/59666

摘要： A disk surface has a keep-out region and a certified region. A transducer associated with the disk surface writes servo information in the keep-out region under control of a servo track writer. The transducer then writes data in a temporary utility zone in the keep-out region. Next, a self-servo write operation uses data in the temporary utility zone to write servo information in the certified region. Thereafter, data is transferred from the temporary utility zone to a final utility zone in the certified region.

摘要翻译： 磁盘表面具有保留区域和认证区域。 与磁盘表面相关联的传感器在伺服记录器的控制下将伺服信息写入保持区域。 然后，换能器将数据写入保留区域中的临时实用区域。 接下来，自伺服写入操作使用临时实用区中的数据在认证区域中写入伺服信息。 此后，数据从临时实用区域转移到认证区域的最终实用区域。

公开(公告)号：US07230786B1

公开(公告)日：2007-06-12

申请号：US10858838

申请日：2004-06-02

申请人： Bill Ray ,  John VanLaanen ,  Bruce Liikanen

发明人： Bill Ray ,  John VanLaanen ,  Bruce Liikanen

IPC分类号： G11B21/02 ,  G11B5/596

CPC分类号： G11B5/59611 ,  G11B5/59661

摘要： The present invention is directed to a method and apparatus for dynamic placement of an integration window in a disk drive having a disk surface with spiral servo information written thereon. A read head is provided for reading the spiral servo information and generating a read signal envelope. A repetitive spiral position error, associated with one spiral of the spiral servo information, is measured. Placement of an integration window is dynamically adjusted based upon the measured repetitive spiral position error, so that a read signal envelope read by the read head appears more towards the center of the integration window than if the placement of the integration window was not dynamically adjusted. By adjusting the placement of the integration window, dynamic range is increased without increasing the size of the integration window.

摘要翻译： 本发明涉及一种用于将集成窗口动态放置在具有写在其上的具有螺旋伺服信息的盘表面的磁盘驱动器中的方法和装置。 提供读头以读取螺旋伺服信息并产生读信号包络。 测量与螺旋伺服信息的一个螺旋相关联的重复螺旋位置误差。 基于测量的重复螺旋位置误差来动态地调整积分窗口的放置，使得读积分头读取的读取信号包络比积分窗口的位置没有被动态调整时更多地朝向积分窗口的中心。 通过调整积分窗口的位置，增加动态范围，而不增加积分窗口的大小。