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1. 发明授权

US06571460B1 METHOD AND APPARATUS FOR BALANCING A ROTARY ACTUATOR BY MODIFYING WEIGHT DISTRIBUTION CHARACTERISTICS OF THE ROTARY ACTUATOR FOR LOCATING AN INSTALLED HEAD STACK ASSEMBLY PORTION CENTER-OF-GRAVITY ALONG A PIVOT AXIS 失效
标题翻译：用于通过修改旋转执行机构的重量分配特性来平衡旋转执行机构的方法和装置，用于定位安装在一个枢轴上的安装的堆叠组件部分中心
公开(公告)号：US06571460B1
公开(公告)日：2003-06-03
申请号：US10295731
申请日：2002-11-15
申请人： Shawn E. Casey , Raffi Codilian , Roger G. Davis , Jorge Haro
发明人： Shawn E. Casey , Raffi Codilian , Roger G. Davis , Jorge Haro
IPC分类号： H23P1900
CPC分类号： G11B5/4813 , G11B5/5526 , G11B5/5569 , Y10S29/901 , Y10T29/49004 , Y10T29/49025 , Y10T29/49027 , Y10T29/5313 , Y10T29/53165
摘要： An aspect of the invention can be regarded as a method of balancing a rotary actuator for use in a rotatable head stack assembly (HSA) portion in a disk drive. The rotary actuator has a pivot axis, and the rotatable HSA portion has an installed HSA portion center-of-gravity. The method provides for determining a desired rotary actuator center-of-gravity location for locating the installed HSA portion center-of-gravity along the pivot axis for mitigating acceleration of the rotary actuator about the pivot axis due to external linear acceleration experienced by the disk drive during a track-follow operation. The method further provides for measuring weight distribution characteristics of the rotary actuator to determine an actual rotary actuator center-of-gravity. The method further provides for selectively modifying weight distribution characteristics of the rotary actuator to locate the actual rotary actuator center-of-gravity at the desired rotary actuator center-of-gravity location.
摘要翻译：本发明的一个方面可以被认为是平衡用于磁盘驱动器中的可旋转磁头堆叠组件（HSA）部分中的旋转致动器的方法。旋转致动器具有枢转轴线，并且可旋转HSA部分具有安装的HSA部分重心。该方法提供用于确定期望的旋转致动器重心位置，用于沿着枢转轴线定位所安装的HSA部分重心，以减轻旋转致动器围绕枢轴的加速度，这是由于盘受到的外部线性加速在跟踪操作期间开车。该方法进一步提供了测量旋转致动器的重量分布特性以确定实际的旋转致动器重心。该方法还提供了选择性地改变旋转致动器的重量分布特性，以将实际的旋转致动器重心定位在期望的旋转致动器重心位置。

2. 发明授权

US06502300B1 METHOD AND APPARATUS FOR BALANCING A ROTARY ACTUATOR BY MODIFYING WEIGHT DISTRIBUTION CHARACTERISTICS OF THE ROTARY ACTUATOR FOR LOCATING AN INSTALLED HEAD STACK ASSEMBLY PORTION CENTER-OF-GRAVITY ALONG A PIVOT AXIS 失效
标题翻译：用于通过修改旋转执行机构的重量分配特性来平衡旋转执行机构的方法和装置，用于定位安装在一个枢轴上的安装的堆叠组件部分中心
公开(公告)号：US06502300B1
公开(公告)日：2003-01-07
申请号：US09630070
申请日：2000-07-31
申请人： Shawn E. Casey , Raffi Codilian , Roger G. Davis , Jorge Haro
发明人： Shawn E. Casey , Raffi Codilian , Roger G. Davis , Jorge Haro
IPC分类号： G11B5127
CPC分类号： G11B5/4813 , G11B5/5526 , G11B5/5569 , Y10S29/901 , Y10T29/49004 , Y10T29/49025 , Y10T29/49027 , Y10T29/5313 , Y10T29/53165
摘要： An aspect of the invention can be regarded as a method of balancing a rotary actuator for use in a rotatable head stack assembly (HSA) portion in a disk drive. The rotary actuator has a pivot axis, and the rotatable HSA portion has an installed HSA portion center-of-gravity. The method provides for deetermining a desired rotary actuator center-of-gravity location for locating the installed HSA portion center-of-gravity along the pivot axis for mitigating acceleration of the rotary actuator about the pivot axis due to external linear acceleration experienced by the disk drive during a track-follow operation. The method further provides for measuring weight distribution characteristics of the rotary actuator to determine an actual rotary actuator center-of-gravity. The method further provides for selectively modifying weight distribution characteristics of the rotary actuator to locate the actual rotary actuator center-of-gravity at the desired rotary actuator center-of-gravity location.
摘要翻译：本发明的一个方面可以被认为是平衡用于磁盘驱动器中的可旋转磁头堆叠组件（HSA）部分中的旋转致动器的方法。旋转致动器具有枢转轴线，并且可旋转HSA部分具有安装的HSA部分重心。该方法提供了确定期望的旋转致动器重心位置，用于沿着枢转轴线定位所安装的HSA部分重心，以减轻旋转致动器围绕枢转轴线的加速度，这是由于盘受到的外部线性加速在跟踪操作期间开车。该方法进一步提供了测量旋转致动器的重量分布特性以确定实际的旋转致动器重心。该方法还提供了选择性地改变旋转致动器的重量分布特性，以将实际的旋转致动器重心定位在期望的旋转致动器重心位置。

3. 发明授权

US06349464B1 Method of making a balance-compensated rotary actuator based upon track-follow performance of a rotatable test head stack assembly portion 有权
公开(公告)号：US06349464B1
公开(公告)日：2002-02-26
申请号：US09584837
申请日：2000-05-31
申请人： Raffi Codilian , Shawn E. Casey
发明人： Raffi Codilian , Shawn E. Casey
IPC分类号： G11B542
CPC分类号： G11B33/08 , G11B5/4813 , G11B5/5521 , Y10T29/49025
摘要： A method of making a balance-compensated (BC) rotary actuator for use in a rotatable BC head stack assembly (HSA) portion in a disk drive based upon track-follow characteristics of a rotatable test HSA portion is provided. The test HSA portion includes a test rotary actuator having a test actuator weight specification. The test rotary actuator has an actuator body portion, a test pivot axis extending through the actuator body portion and a head connected to the actuator body portion. The test rotary actuator is controlled to rotate about the test pivot axis for positioning the head over a selected disk track. The test rotary actuator has a test rotary actuator center-of-gravity torque vector associated therewith about the test pivot axis. The method provides for vibrating the disk drive at a vibration frequency in order to vibrate the test HSA portion. Position error information is read using the head while performing a track-follow operation during the vibrating of the test HSA portion. Head off-track error due to the vibration of the disk drive is derived based upon the read position error information representative of positioning of the head relative to the selected disk track. A resultant torque vector is derived based upon the head off-track error. The resultant torque vector has a magnitude equal to a mass of the test HSA portion times a distance between the test pivot axis and a test installed HSA portion center-of-gravity. The test installed HSA portion center-of-gravity takes into consideration forces acting upon the test rotary actuator due to installation with the test HSA portion. The resultant torque vector has a direction extending perpendicular from the test pivot axis towards the test installed HSA portion center-of-gravity. A balancing torque vector is derived having a magnitude equal to and a direction opposite of the resultant torque vector. The balancing torque vector is incorporated into the test actuator weight distribution specification to produce a BC actuator weight distribution specification. The BC actuator weight distribution specification is used to manufacture the BC rotary actuator having a BC pivot axis. The BC HSA portion has a BC HSA installation center-of-gravity at the BC pivot axis for mitigating external acceleration applied to the BC rotary actuator about the BC pivot axis due to external linear acceleration experienced by the disk drive during a track-follow operation.

4. 发明授权

US08307156B1 Adaptively modifying pre-read operations within a rotating media storage device 有权
标题翻译：自适应地修改旋转介质存储设备内的预读操作
公开(公告)号：US08307156B1
公开(公告)日：2012-11-06
申请号：US12952088
申请日：2010-11-22
申请人： Raffi Codilian , Gregory B. Thelin
发明人： Raffi Codilian , Gregory B. Thelin
IPC分类号： G06F12/00
CPC分类号： G11B5/02 , G06F3/061 , G06F3/0656 , G06F3/0676 , G06F12/0866 , G11B5/5547
摘要： A rotating media storage device (RMSD) that adaptively modifies pre-read operations is disclosed. The RMSD schedules a pre-read data segment on a second track of disk, commands a movable head to seek to the second track, and if an on-track condition is not met for the scheduled pre-read data segment, modifies the pre-read operation. In one example, modifying the pre-read operation includes canceling the pre-read operation and then performing a read data operation.
摘要翻译：公开了一种自适应地修改预读操作的旋转介质存储设备（RMSD）。 RMSD在磁盘的第二磁道上调度预读数据段，命令可移动磁头寻找到第二磁道，并且如果调度的预读数据段不符合轨上条件，读操作。在一个示例中，修改预读操作包括取消预读操作，然后执行读数据操作。

5. 发明授权

US07274639B1 Disk drive performing multi-level prioritization of entries in a suspect sector list to identify and relocate defective data sectors 有权
标题翻译：磁盘驱动器执行可疑扇区列表中的条目的多级优先级以识别和重定位有缺陷的数据扇区
公开(公告)号：US07274639B1
公开(公告)日：2007-09-25
申请号：US10850850
申请日：2004-05-21
申请人： Raffi Codilian , Dalwinder Singh
发明人： Raffi Codilian , Dalwinder Singh
IPC分类号： G11B7/00
CPC分类号： G11B20/1883 , G11B20/1879 , G11B2020/1893 , G11B2220/2516
摘要： A disk drive is disclosed comprising a disk having a plurality of data tracks, wherein each data track comprises a plurality of data sectors, and a head is actuated over the disk. A suspect sector list (SSL) stores a plurality of SSL entries, wherein each SSL entry identifies at least one suspect data sector. The disk drive further comprises a disk controller for executing an access command received from a host computer to access at least one of the data sectors. If an error is detected while executing the access command, the disk controller generates an SSL entry having a priority level selected from at least three priority levels and adds the SSL entry to the SSL. A verification operation is executed for each suspect data sector identified by each SSL entry, wherein the SSL entries are processed relative to the priority level assigned to each SSL entry.
摘要翻译：公开了一种磁盘驱动器，其包括具有多个数据磁道的磁盘，其中每个数据磁道包括多个数据扇区，并且磁头在盘上被致动。可疑扇区列表（SSL）存储多个SSL条目，其中每个SSL条目标识至少一个可疑数据扇区。磁盘驱动器还包括盘控制器，用于执行从主计算机接收的访问命令以访问数据扇区中的至少一个。如果在执行访问命令时检测到错误，则磁盘控制器将生成具有从至少三个优先级中选择的优先级的SSL条目，并将SSL条目添加到SSL。对由每个SSL条目标识的每个可疑数据扇区执行验证操作，其中相对于分配给每个SSL条目的优先级来处理SSL条目。

6. 发明授权

US07031104B1 Disk drive having guide-vanes 有权
标题翻译：磁盘驱动器具有导向叶片
公开(公告)号：US07031104B1
公开(公告)日：2006-04-18
申请号：US10137481
申请日：2002-04-30
申请人： Arafat M. Butt , Raffi Codilian , Kin-Cheok Pong
发明人： Arafat M. Butt , Raffi Codilian , Kin-Cheok Pong
IPC分类号： G11B33/14 , G11B5/54
CPC分类号： G11B5/6005 , G11B5/40 , G11B33/08 , G11B33/14
摘要： A disk drive includes an enclosure, a rotatable disk and an actuator arm, and also includes a plurality of arcuate channels. Airflow is created within the enclosure when the disk rotates. The plurality of arcuate channels facing the disk to decrease the turbulence of the airflow with respect to the actuator arm. The arcuate channels are formed on at least one portion of the enclosure.
摘要翻译：磁盘驱动器包括外壳，可旋转盘和致动器臂，并且还包括多个弧形通道。当磁盘旋转时，在外壳内创建气流。多个弓形通道面对盘以减小气流相对于致动臂的湍流。弓形通道形成在外壳的至少一部分上。

7. 发明授权

US06930848B1 Back EMF voltage transducer/generator to convert mechanical energy to electrical energy for use in small disk drives 失效
标题翻译：反电动势电压传感器/发电机将机械能转换为电能用于小型磁盘驱动器
公开(公告)号：US06930848B1
公开(公告)日：2005-08-16
申请号：US10185932
申请日：2002-06-28
申请人： Raffi Codilian , Kamran Oveyssi
发明人： Raffi Codilian , Kamran Oveyssi
IPC分类号： G11B19/00 , G11B25/04 , G11B33/12
CPC分类号： G11B33/122 , G11B19/00 , G11B25/043
摘要： A mobile host device configured to draw electrical energy from an energy storage device includes a disk drive. The disk drive includes a disk drive enclosure including a base, a spindle motor attached to the base, a disk positioned on the spindle motor, a generator and a charging circuit. The generator may be coupled to the disk drive enclosure and/or the mobile host device and generates electrical energy from the motion of the mobile host device and/or disk drive. The charging circuit is configured to charge the energy storage device using the electrical energy generated by the generator.
摘要翻译：被配置为从能量存储装置吸取电能的移动主机装置包括磁盘驱动器。磁盘驱动器包括一个磁盘驱动器机壳，包括一个底座，一个连接到该底座的主轴电机，一个位于主轴电机上的磁盘，一个发电机和一个充电电路。发电机可以耦合到磁盘驱动器机箱和/或移动主机设备，并且从移动主机设备和/或磁盘驱动器的运动产生电能。充电电路被配置为使用由发电机产生的电能对能量存储装置充电。

8. 发明授权

US06914743B1 Vibration cancellation in a disk drive by using an acceleration sensor and adaptively adjusting its gain to minimize external acceleration effects 失效
标题翻译：通过使用加速度传感器对磁盘驱动器进行振动消除，并自适应调整其增益以最小化外部加速度效应
公开(公告)号：US06914743B1
公开(公告)日：2005-07-05
申请号：US09728626
申请日：2000-11-30
申请人： Aswartha Narayana , Raffi Codilian , Lan V. Ngo
发明人： Aswartha Narayana , Raffi Codilian , Lan V. Ngo
IPC分类号： G11B5/55 , G11B5/596
CPC分类号： G11B5/5582 , G11B5/59694
摘要： Disclosed is a disk drive using an accelerometer to sense linear vibration and cancel its effects with an adaptive algorithm during track following. The accelerometer is oriented to detect acceleration associated with torque that tends to cause the actuator to move off-track notwithstanding the efforts of the servo control system. The accelerometer's filtered output is used to modify the control effort. The disk drive uses the position error signal to adaptively filter the accelerometer's output in an effort to mathematically converge on a set of optimal filter coefficients and thereby reduce the effect of vibration that may otherwise impose a torque on the actuator.
摘要翻译：公开了一种磁盘驱动器，其使用加速度计来感测线性振动并且在跟踪期间利用自适应算法来消除其影响。加速度计被定向以检测与扭矩相关联的加速度，尽管伺服控制系统的努力，倾向于使致动器移动离开轨道。加速度计的滤波输出用于修改控制功能。磁盘驱动器使用位置误差信号来自适应地过滤加速度计的输出，以便在数学上收敛于一组最佳滤波器系数，从而减少否则在致动器上施加扭矩的振动的影响。

9. 发明授权

US06847502B1 Repeatable runout determination within a rotating media storage device 失效
标题翻译：旋转介质存储设备内的可重复跳动确定
公开(公告)号：US06847502B1
公开(公告)日：2005-01-25
申请号：US10185983
申请日：2002-06-28
申请人： Raffi Codilian
发明人： Raffi Codilian
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A rotating media storage device (RMSD) includes a disk having at least one track with a plurality of servo wedges, a moveable head, and a microprocessor. The microprocessor receives a plurality of position error signal (PES) values during track following and sums PES values for a plurality of different sets of servo wedges of the track to generate a plurality of shifted summed position error signal (SSPES) values. The microprocessor shifts the plurality of generated SSPES values by a phase shift value to generate a plurality of corrected shifted summed position error signal (CSSPES) values, which correspond to the repeatable runout (RRO) of the disk.
摘要翻译：旋转介质存储装置（RMSD）包括具有至少一个具有多个伺服楔的轨道的盘，可动头和微处理器。微处理器在跟踪跟踪期间接收多个位置误差信号（PES）值，并且对于轨道的多个不同伺服楔形集合的PES值求和，以产生多个移位的加和位置误差信号（SSPES）值。微处理器将多个生成的SSPES值移位相移值，以产生与盘的可重复跳动（RRO）相对应的多个校正的移位的加法位置误差信号（CSSPES）值。

10. 发明授权

US06795262B1 Method of modifying on-track declaration algorithm of a disk drive based upon detection of external vibration condition 有权
标题翻译：基于外部振动条件的检测来修改磁盘驱动器的轨道上声明算法的方法
公开(公告)号：US06795262B1
公开(公告)日：2004-09-21
申请号：US10185970
申请日：2002-06-28
申请人： Raffi Codilian , Kent W. Gibbons , Steven L. Webb
发明人： Raffi Codilian , Kent W. Gibbons , Steven L. Webb
IPC分类号： G11B1904
CPC分类号： G11B5/5582 , G11B5/596 , G11B19/04
摘要： A method of expanding the on-track operational range of a disk drive based upon detection of an external vibration condition. The method involves detecting that a vibration state exists and, while the existence of the vibration state is detected, modifying the default on-track-declaration algorithm such that a data transfer operation can be completed in less time than if the default on-track-declaration algorithm was in use.
摘要翻译：一种基于外部振动条件的检测来扩展磁盘驱动器的在轨操作范围的方法。该方法涉及检测到振动状态存在，并且当检测到振动状态的存在时，修改默认的在轨声明算法，使得数据传送操作可以在比默认的在轨 - 声明算法正在使用中。

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