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1. 发明授权

US07145745B1 Multi-stage actuator disk drives, methods, and computer program products that compensate for repeatable runout based on estimated secondary actuator position 有权
标题翻译：多级执行器磁盘驱动器，方法和计算机程序产品，可根据估计的二次执行器位置补偿可重复的跳动
公开(公告)号：US07145745B1
公开(公告)日：2006-12-05
申请号：US10932717
申请日：2004-09-02
申请人： Stan Shepherd , Jason Adler , Lin Guo , Xiaoping Hu , Yu Sun
发明人： Stan Shepherd , Jason Adler , Lin Guo , Xiaoping Hu , Yu Sun
IPC分类号： G11B5/596
CPC分类号： G11B5/5552
摘要： Methods of compensating for repeatable runout in a disk drive are provided. The disk drive includes a data storage disk, a transducer adjacent to the disk, a primary actuator for positioning the transducer over a first range of movement, and a secondary actuator for positioning the transducer over a second range of movement that is less than the first range of movement. Estimates are made of the position of the secondary actuator in the second range of movement. Data is read from the disk via the transducer. A position error signal is determined based on the read data. Positioning of the transducer by the primary actuator is controlled based on the estimated position of the secondary actuator in the second range of movement and based on the position error signal to compensate for repeatable runout.
摘要翻译：提供补偿磁盘驱动器中可重复跳动的方法。磁盘驱动器包括数据存储盘，与盘相邻的换能器，用于在第一移动范围上定位换能器的主致动器，以及辅助致动器，用于将传感器定位在比第一移动范围小的第二移动范围运动范围在第二运动范围内由次级致动器的位置进行估计。通过传感器从磁盘读取数据。基于读取的数据确定位置误差信号。基于在第二移动范围内的辅助致动器的估计位置并且基于位置误差信号来控制由主致动器定位换能器，以补偿可重复的跳动。

2. 发明授权

US07414809B2 Servo writing using radially overlapped servo segments 有权
标题翻译：伺服写入使用径向重叠的伺服段
公开(公告)号：US07414809B2
公开(公告)日：2008-08-19
申请号：US11750820
申请日：2007-05-18
申请人： S. Craig Smith , Stan Shepherd , Yu Sun , Yuan Roy Chen , Lin Guo
发明人： S. Craig Smith , Stan Shepherd , Yu Sun , Yuan Roy Chen , Lin Guo
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： In accordance with various embodiments, initial servo data are written to a storage medium as a series of radially overlapped spiral segments. Final servo data are thereafter written to the medium while concurrently servoing on said overlapped segments.
摘要翻译：根据各种实施例，初始伺服数据作为一系列径向重叠的螺旋段被写入存储介质。最后伺服数据此后被写入介质，同时在所述重叠段上进行伺服。

3. 发明授权

US07551387B2 Servo writing with offset compensation for prewritten reference 有权
标题翻译：具有偏移补偿的伺服写入用于预写参考
公开(公告)号：US07551387B2
公开(公告)日：2009-06-23
申请号：US11740747
申请日：2007-04-26
申请人： Yu Sun , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John W. VanLaanen , Charles R. Watt , Stan Shepherd , S. Craig Smith , Todd Franks , Lin Guo
发明人： Yu Sun , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John W. VanLaanen , Charles R. Watt , Stan Shepherd , S. Craig Smith , Todd Franks , Lin Guo
IPC分类号： G11B21/02
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。

4. 发明申请

US20080030889A1 SELF-SERVO WRITING USING RADIALLY OVERLAPPED SERVO SEGMENTS 有权
标题翻译：自助服务器使用放射性超载服务器部分
公开(公告)号：US20080030889A1
公开(公告)日：2008-02-07
申请号：US11750820
申请日：2007-05-18
申请人： S. Smith , Stan Shepherd , Yu Sun , Yuan Chen , Lin Guo
发明人： S. Smith , Stan Shepherd , Yu Sun , Yuan Chen , Lin Guo
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： In accordance with various embodiments, initial servo data are written to a storage medium as a series of radially overlapped spiral segments. Final servo data are thereafter written to the medium while concurrently servoing on said overlapped segments.
摘要翻译：根据各种实施例，初始伺服数据作为一系列径向重叠的螺旋段被写入存储介质。最后伺服数据此后被写入介质，同时在所述重叠段上进行伺服。

5. 发明授权

US07304818B2 Preconditioning an elastomeric stop member for use as a reference position 失效
公开(公告)号：US07304818B2
公开(公告)日：2007-12-04
申请号：US11545184
申请日：2006-10-10
申请人： Xin H. Yang , S. Craig Smith , Lin Guo , Yu Sun , Brian Rigney , Stan Shepherd , Yuan Chen
发明人： Xin H. Yang , S. Craig Smith , Lin Guo , Yu Sun , Brian Rigney , Stan Shepherd , Yuan Chen
IPC分类号： G11B5/56 , G11B21/12
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： An apparatus and associated method for preconditioning an elastomeric stop member to create a stabilized reference position for a moveable member by repetitively biasing the moveable member against the stop member and using the stabilized reference position to initiate a writing of servo data by the moveable member to a storage surface.

6. 发明申请

US20070159713A1 Preconditioning an elastomeric stop member for use as a reference position 失效
标题翻译：预先使用弹性止动件作为参考位置
公开(公告)号：US20070159713A1
公开(公告)日：2007-07-12
申请号：US11545184
申请日：2006-10-10
申请人： Xin Yang , S. Smith , Lin Guo , Yu Sun , Brian Rigney , Stan Shepherd , Yuan Chen
发明人： Xin Yang , S. Smith , Lin Guo , Yu Sun , Brian Rigney , Stan Shepherd , Yuan Chen
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： An apparatus and associated method for preconditioning an elastomeric stop member to create a stabilized reference position for a moveable member by repetitively biasing the moveable member against the stop member and using the stabilized reference position to initiate a writing of servo data by the moveable member to a storage surface.
摘要翻译：一种用于预处理弹性止动构件的装置和相关联的方法，以通过将可移动构件重复地偏压在止动构件上并使用稳定的基准位置来启动可移动构件向伺服数据写入伺服数据，从而为可移动构件产生稳定的基准位置储存面。

7. 发明授权

US07215499B1 Multi-stage actuator disk drive and methods for controlling a transducer with settle-switching state dependent feed-forward control 有权
标题翻译：多级致动器盘驱动器和用于控制具有稳定开关状态相关前馈控制的换能器的方法
公开(公告)号：US07215499B1
公开(公告)日：2007-05-08
申请号：US11180283
申请日：2005-07-13
申请人： Yunfeng Li , Yu Sun , Lin Guo , Xiaoping Hu
发明人： Yunfeng Li , Yu Sun , Lin Guo , Xiaoping Hu
IPC分类号： G11B21/02
CPC分类号： G11B5/5547 , G11B5/5552
摘要： A disk drive and method are provided for controlling seeking of a transducer that is adjacent to a rotatable data storage disk in a disk drive. The disk drive includes an actuator for positioning the transducer relative to the disk, the method comprising. The actuator is controlled to move the transducer toward a target track on the disk during an initial phase of a seek mode during which the transducer is primarily accelerated toward the target track. During a settle phase of the seek mode which follows the initial phase the actuator is controlled to settle the transducer onto the target track. An initial position, an initial velocity, and an initial acceleration of the transducer are determined at a phase switch time at about when control of the actuator switches from the initial phase to the settle phase of the seek mode. Feed-forward control information is generated based on the determined initial position, initial velocity, and initial acceleration of the transducer. The actuator is controlled responsive to the feed-forward control information to settle the transducer onto the target track during the settle phase of the seek mode.
摘要翻译：提供了一种磁盘驱动器和方法，用于控制寻找与磁盘驱动器中的可旋转数据存储盘相邻的换能器。磁盘驱动器包括用于相对于盘定位换能器的致动器，该方法包括。在寻像模式的初始阶段期间，致动器被控制以将传感器移向盘上的目标轨道，在该模式期间，换能器主要朝向目标轨道加速。在跟随初始阶段的搜索模式的稳定阶段期间，致动器被控制以将换能器定位到目标轨道上。在致动器的控制从寻找模式的初始阶段到稳定阶段切换的时刻，在相位切换时刻确定换能器的初始位置，初始速度和初始加速度。基于确定的换能器的初始位置，初始速度和初始加速度产生前馈控制信息。响应于前馈控制信息控制致动器，以在搜索模式的稳定阶段期间将换能器稳定在目标轨道上。

8. 发明授权

US07116513B1 Positioning transducers based on a compensation scheme that varies based on transducer vibrational state 有权
标题翻译：基于基于传感器振动状态变化的补偿方案来定位换能器
公开(公告)号：US07116513B1
公开(公告)日：2006-10-03
申请号：US10999552
申请日：2004-11-30
申请人： Yu Sun , Lin Guo , Xiaoping Hu
发明人： Yu Sun , Lin Guo , Xiaoping Hu
IPC分类号： G11B5/596
CPC分类号： G11B5/5582 , G11B19/04
摘要： A disk drive includes a transducer and a rotatable disk, which includes a plurality of tracks. A vibration state of the transducer relative to the disk is determined. The transducer is positioned relative one of the tracks based on a compensation scheme that varies based on the determination of the vibration state. The compensation scheme may be varied by selecting among output of two or more compensators, based on the determined of the vibration state of the transducer, to control positioning of the transducer. The compensation scheme may alternatively, or additionally, be varied by varying a contribution from a vibration state actuator compensator to the control of positioning of the transducer. The vibration state actuator compensator is configured to improve transducer track following while the transducer is subjected to vibration.
摘要翻译：磁盘驱动器包括换能器和可旋转盘，其包括多个轨道。确定换能器相对于盘的振动状态。基于基于振动状态的确定而变化的补偿方案，换能器相对于轨道定位。可以通过基于确定的换能器的振动状态来选择两个或多个补偿器的输出来改变补偿方案，以控制换能器的定位。可以通过改变从振动状态致动器补偿器对转换器的定位的控制的贡献来替代或另外地改变补偿方案。振动状态致动器补偿器配置成在传感器经受振动时改善传感器轨迹跟随。

9. 发明授权

US07158325B1 Disk drive head touchdown detection with improved discrimination 有权
标题翻译：磁盘驱动头触地得分检测具有改进的辨别力
公开(公告)号：US07158325B1
公开(公告)日：2007-01-02
申请号：US10984559
申请日：2004-11-08
申请人： Xiaoping Hu , Yu Sun , Lin Guo , Don Brunnett
发明人： Xiaoping Hu , Yu Sun , Lin Guo , Don Brunnett
IPC分类号： G11B15/18
CPC分类号： G11B5/59627 , G11B5/6076
摘要： A disk drive detects head touchdown based on a magnitude of a position error signal at a discrete frequency. The discrete frequency is one-half the disk rotation frequency or an integral multiple of the disk rotation frequency. The head is heated by turning on a heater at the discrete frequency, thereby injecting bias into a servo system that increases the PES magnitude. In addition, the servo system has a first transfer function for tracking the head during read and write operations and a second transfer function for tracking the head during head touchdown detection. The second transfer function has smaller vibration rejection than the first transfer function so that the disk drive is less sensitive to vibration during read and write operations than during head touchdown detection.
摘要翻译：磁盘驱动器基于离散频率处的位置误差信号的大小来检测磁头触地。离散频率是磁盘旋转频率的一半或磁盘旋转频率的整数倍。通过以离散频率打开加热器来加热头部，从而将偏压注入到增加PES量值的伺服系统中。此外，伺服系统具有用于在读取和写入操作期间跟踪头部的第一传递功能，以及用于在头部触地检测期间跟踪头部的第二传递功能。第二传递函数具有比第一传递函数更小的振动抑制，使得磁盘驱动器在读取和写入操作期间比在头部触地检测期间对振动较不敏感。

10. 发明授权

US07012780B1 Disk drive and methods that calibrate micro actuator positioning before seek operations 失效
标题翻译：磁盘驱动器和方法，可在寻找操作之前校准微执行器定位
公开(公告)号：US07012780B1
公开(公告)日：2006-03-14
申请号：US11070783
申请日：2005-03-02
申请人： Xiaoping Hu , Yu Sun , Lin Guo , Donald Brunett
发明人： Xiaoping Hu , Yu Sun , Lin Guo , Donald Brunett
IPC分类号： G11B5/596
CPC分类号： G11B5/5552 , G11B5/4886
摘要： A disk drive includes a data storage disk, a transducer, a micro actuator, a coarse actuator, and a controller. The micro actuator is configured to position the transducer relative to the disk over a first range of movement. The coarse actuator is configured to position the micro actuator relative to the disk over a second range of movement that is larger than the first range of movement. The controller is configured to control positioning of the transducer by the coarse actuator and the micro actuator in a track following operation, and in a seek operation responsive to a seek command. The controller is also configured to calibrate its positioning of the transducer by the micro actuator responsive to receipt of the seek command and prior to seeking the transducer from an initial track to a target track.
摘要翻译：磁盘驱动器包括数据存储盘，换能器，微执行器，粗执行器和控制器。微致动器构造成在第一移动范围上相对于盘定位换能器。粗致动器被构造成在比第一移动范围大的第二移动范围内相对于盘定位微致动器。控制器被配置为通过粗略致动器和微型致动器在跟踪操作中控制换能器的定位，以及响应于寻道命令的寻道操作。控制器还被配置为响应于接收到寻道命令并且在从初始轨迹到目标轨道寻找换能器之前，通过微执行器校准其换能器的定位。

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