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1. 发明授权

US09099133B1 Disk drive servo control using hybrid upsample filter 有权
标题翻译：使用混合上采样滤波器的磁盘驱动器伺服控制
公开(公告)号：US09099133B1
公开(公告)日：2015-08-04
申请号：US13752693
申请日：2013-01-29
申请人： Western Digital Technologies, Inc.
发明人： Shan Tang , Lu Feng , Yanan Huang , Alexander Babinski , Min Chen , Orhan Beker
IPC分类号： G11B21/02 , G11B5/02 , G11B5/58 , G11B5/55
CPC分类号： G11B5/553 , G11B5/59622
摘要： A disk drive is disclosed comprising a disk comprising a plurality of servo tracks, wherein each servo track comprises a plurality of servo sectors, and an actuator for actuating a head over the disk in response to an actuator control signal. The servo sectors are read to generate a first sequence of control samples x[k] at a sample frequency corresponding to a frequency of the servo sectors. A hybrid upsample filter is used to upsample by a factor of N the first sequence of control samples x[k] to generate a second sequence of control samples y[ki], wherein the hybrid upsample filter provides a higher phase gain than a zero-order type upsample filter at frequencies less than one kilohertz, and approximately the same attenuation as a first-order type upsample filter around the sample frequency. The actuator control signal is generated in response to the second sequence of control samples y[ki].
摘要翻译：公开了一种磁盘驱动器，其包括包括多个伺服磁道的磁盘，其中每个伺服磁道包括多个伺服扇区，以及用于响应于致动器控制信号而将磁头驱动到磁盘上的致动器。读取伺服扇区以在对应于伺服扇区的频率的采样频率处产生第一控制样本序列x [k]。混合上采样滤波器用于以N个因子对第一个控制样本x [k]序列进行上采样，以产生第二个控制采样序列y i，其中混合上采样滤波器提供比零 - 频率小于1千赫兹的订单型上采样滤波器，以及与采样频率周围的一阶类型上采样滤波器大致相同的衰减。致动器控制信号响应于控制样本的第二序列y i而被产生。

2. 发明授权

US09208815B1 Data storage device dynamically reducing coast velocity during seek to reduce power consumption 有权
标题翻译：数据存储设备在寻求降低功耗时动态降低惯性速度
公开(公告)号：US09208815B1
公开(公告)日：2015-12-08
申请号：US14510951
申请日：2014-10-09
申请人： Western Digital Technologies, Inc.
发明人： Mingji Lou , Kexiu Liu , Orhan Beker
IPC分类号： G11B21/02 , G11B19/28 , G11B19/247
CPC分类号： G11B5/5547
摘要： A data storage device is disclosed comprising a disk comprising a plurality of tracks, and an actuator configured to actuate a head over the disk. While seeking the head from a first track toward a second track, a velocity of the head over the disk is measured, and a deceleration distance and a deceleration time is generated based on the measured velocity. A coast velocity is generated based on the measured velocity, the deceleration distance, and the deceleration time, and a control signal applied to the actuator is adjusted based on the measured velocity and the coast velocity.
摘要翻译：公开了一种数据存储装置，包括包括多个轨道的盘，以及致动器，其被配置为在盘上致动头部。在从第一轨道朝向第二轨道寻求头部时，测量头部在盘上的速度，并且基于测量的速度产生减速距离和减速时间。基于测量的速度，减速距离和减速时间产生滑行速度，并且基于测量的速度和惯性速度来调整施加到致动器的控制信号。

3. 发明授权

US09165583B1 Data storage device adjusting seek profile based on seek length when ending track is near ramp 有权
标题翻译：数据存储设备根据寻道长度调整寻道曲线，当结束轨迹接近斜坡时
公开(公告)号：US09165583B1
公开(公告)日：2015-10-20
申请号：US14526742
申请日：2014-10-29
申请人： Western Digital Technologies, Inc.
发明人： Orhan Beker
IPC分类号： G11B5/55
CPC分类号： G11B5/5547 , G11B5/54
摘要： A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks, and a load/unload ramp. When seeking the head a seek length from a starting track to an ending track, control circuit is configured to adjust a seek profile when the seek length is greater than a first threshold and the ending track is within a second threshold of the load/unload ramp.
摘要翻译：公开了一种数据存储装置，其包括在包括多个轨道的盘上驱动的头和加载/卸载斜坡。当从起始轨道到结束轨道寻找头部寻道长度时，控制电路被配置成当寻找长度大于第一阈值并且结束轨迹在加载/卸载斜坡的第二阈值内时调整寻道曲线。

4. 发明授权

US08922931B1 Disk drive releasing variable amount of buffered write data based on sliding window of predicted servo quality 有权
标题翻译：基于预测伺服质量的滑动窗口，磁盘驱动器释放缓冲写入数据的可变量
公开(公告)号：US08922931B1
公开(公告)日：2014-12-30
申请号：US13928329
申请日：2013-06-26
申请人： Western Digital Technologies, Inc.
发明人： Chuanwen Ji , Alain Chahwan , Orhan Beker , Yanan Huang , Duc T. Phan
IPC分类号： G11B19/04 , G11B5/596
CPC分类号： G11B19/044 , G11B5/59694 , G11B19/041 , G11B19/042 , G11B19/045
摘要： A disk drive is disclosed wherein N data wedges of write data are buffered in a buffer. After writing at least two of the data wedges to the disk including a first data wedge and a second data wedge, a first servo metric value is measured when reading a first servo sector, and a second servo metric value is predicted based on the first servo metric value, wherein the second servo metric value corresponds to a second servo sector following the first servo sector. When the first servo metric value indicates a safe write condition and the second servo metric value indicates an unsafe write condition, the first data wedge is released from the buffer, and when the first servo metric value indicates a safe write condition and the second servo metric value indicates a safe write condition, the first and second data wedges are released from the buffer.
摘要翻译：公开了一种磁盘驱动器，其中写入数据的N个数据楔被缓冲在缓冲器中。在将包括第一数据楔和第二数据楔的数据楔中的至少两个数据写入之后，在读取第一伺服扇区时测量第一伺服度量值，并且基于第一伺服扇区预测第二伺服度量值度量值，其中所述第二伺服度量值对应于所述第一伺服扇区之后的第二伺服扇区。当第一伺服度量值指示安全写入条件并且第二伺服度量值指示不安全写入条件时，第一数据楔从缓冲器释放，并且当第一伺服度量值指示安全写入条件并且第二伺服度量值表示安全写入条件，第一和第二数据楔从缓冲器中释放。

5. 发明授权

US08902539B1 Data storage device reducing seek power consumption 有权
标题翻译：数据存储设备减少寻求功耗
公开(公告)号：US08902539B1
公开(公告)日：2014-12-02
申请号：US14276192
申请日：2014-05-13
申请人： Western Digital Technologies, Inc.
发明人： Kexiu Liu , Orhan Beker , Mingji Lou
IPC分类号： G11B5/596 , G11B5/55 , G11B21/08
CPC分类号： G11B5/5547 , G11B21/08
摘要： A data storage device is disclosed comprising a disk comprising a plurality of tracks, a head, and an actuator configured to actuate the head over the disk. An adjusted seek time is determined to seek the head from a first track to a second track, and an adjusted coast velocity and an adjusted coast time of the seek is determined based on the adjusted seek time and a power consumption of the seek when a driving current applied to the actuator is substantially constant during at least one of an acceleration time and a deceleration time of the seek.
摘要翻译：公开了一种数据存储装置，其包括包括多个轨道的磁盘，头部和被配置为致动磁头在磁盘上的致动器。确定调整后的寻道时间，以从第一轨道到第二轨迹寻找头部，并且基于调整的寻道时间和驾驶时的寻道功率来确定搜索的调整的海岸速度和调整的惯性滑行时间施加到致动器的电流在寻道的加速时间和减速时间中的至少一个中基本上是恒定的。

6. 发明授权

US08780479B1 Disk drive executing jerk seeks to rotate pivot ball bearings relative to races 有权
标题翻译：执行磁力驱动的磁盘驱动器旨在相对于种族旋转枢轴滚珠轴承
公开(公告)号：US08780479B1
公开(公告)日：2014-07-15
申请号：US13925820
申请日：2013-06-24
申请人： Western Digital Technologies, Inc.
发明人： Daniel L. Helmick , Shane Walker , Orhan Beker , Charles D. Richards
IPC分类号： G11B5/55
CPC分类号： G11B5/5547
摘要： A disk drive is disclosed comprising a disk comprising a plurality of tracks, a head attached to a distal end of an actuator arm, and a voice coil motor (VCM) operable to rotate the actuator arm about a pivot bearing including a race and a plurality of ball bearings. The VCM is controlled to execute a first jerk seek in a first radial direction so that the ball bearings slip within the race by a first rotation angle. The VCM is controlled to execute a second jerk seek in the first radial direction so that the ball bearings slip within the race by a second rotation angle, wherein the second rotation angle adds to the first rotation angle in order to rotate the ball bearings relative to the race at a reference angle of the pivot bearing.
摘要翻译：公开了一种磁盘驱动器，包括包括多个磁道的磁盘，附接到致动器臂的远端的磁头和可操作以使致动器臂围绕包括座圈和多个的枢轴轴承旋转的音圈电机（VCM）的球轴承。控制VCM以在第一径向方向上执行第一加加速度搜索，使得滚珠轴承在座圈内滑动第一旋转角度。 VCM被控制以在第一径向方向上执行第二加加速度搜索，使得滚珠轴承在座圈内滑动第二旋转角度，其中第二旋转角度增加到第一旋转角度以使球轴承相对于在轴承的参考角度的比赛。

7. 发明授权

US09251823B1 Data storage device delaying seek operation to avoid thermal asperities 有权
标题翻译：数据存储设备延迟查找操作以避免热凹凸
公开(公告)号：US09251823B1
公开(公告)日：2016-02-02
申请号：US14565635
申请日：2014-12-10
申请人： Western Digital Technologies, Inc.
发明人： Kexiu Liu , Orhan Beker , Kenneth T. Tabacchi , Chun Sei Tsai , Carl E. Barlow
IPC分类号： G11B21/02 , G11B5/55
CPC分类号： G11B5/5547
摘要： A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks, wherein at least two of the tracks comprise a thermal asperity. Prior to seeking the head from a first track to a second track, for each of at least two of the thermal asperities a minimum seek delay and a maximum seek delay that will cause the head to miss the thermal asperity are computed, and an allowed seek delay range that will cause the head to miss the thermal asperity is computed. When the undelayed seek will cause the head to hit at least one thermal asperity, the seek is delayed by a seek delay determined based on the minimum seek delays, the maximum seek delays, and the allowed seek delay ranges.
摘要翻译：公开了一种数据存储装置，其包括在包括多个轨道的盘上致动的头，其中至少两个轨道包括热凹凸。在从第一轨道到第二轨道寻求磁头之前，对于至少两个热凹凸中的每一个，计算将导致磁头错过热凹凸的最小寻道延迟和最大寻道延迟，并且允许的寻道计算将导致头部错过热凹凸的延迟范围。当无延迟寻找将导致头部发生至少一个热不平坦时，寻道被延迟基于最小寻道延迟，最大寻道延迟和允许的寻道延迟范围确定的寻道延迟。

8. 发明授权

US08995081B2 Disk drive minimizing initial seek distance after load operation 有权
标题翻译：磁盘驱动器最小化加载操作后的初始寻找距离
公开(公告)号：US08995081B2
公开(公告)日：2015-03-31
申请号：US13872029
申请日：2013-04-26
申请人： Western Digital Technologies, Inc.
发明人： Aswartha Narayana , Orhan Beker
IPC分类号： G11B5/596 , G11B21/02 , G11B5/55
CPC分类号： G11B5/5547
摘要： A disk drive is disclosed comprising a disk comprising tracks defined by servo sectors, a head, and control circuitry comprising a servo control system operable to actuate the head over the disk in response to the servo sectors. The head is loaded over the disk during a load operation, and a radial velocity of the head is determined during the load operation. A target track is generated based on the determined radial velocity of the head, and the servo control system seeks the head to the target track.
摘要翻译：公开了一种磁盘驱动器，包括包括由伺服扇区定义的磁道的磁盘，磁头和包括伺服控制系统的控制电路，所述伺服控制系统可操作以响应于伺服扇区致动磁头。在加载操作期间，头被装载在盘上，并且在加载操作期间确定头的径向速度。基于确定的头部的径向速度产生目标轨道，并且伺服控制系统将头部寻找到目标轨迹。

9. 发明授权

US08842385B1 Disk drive decreasing an adapting delay based on speed that a settle parameter adapts 有权
标题翻译：磁盘驱动器根据稳定参数适应的速度降低适配延迟
公开(公告)号：US08842385B1
公开(公告)日：2014-09-23
申请号：US14032023
申请日：2013-09-19
申请人： Western Digital Technologies, Inc.
发明人： Mingji Lou , Xiuli Guo , Orhan Beker
IPC分类号： G11B5/596
CPC分类号： G11B5/5547
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, and control circuitry operable to seek the head to a target track and settle the head on the target track during a settle time, adapt a settle parameter over an adapting delay of the settle time, wherein the settle parameter is used to settle the head on the target track, and decrease the adapting delay based on a speed that the settle parameter adapts.
摘要翻译：公开了一种磁盘驱动器，其包括在包括多个磁道的盘上致动的磁头，以及控制电路，其可操作以在安置时间期间将磁头搜索到目标磁道并将磁头安置在目标磁道上，使调整参数适应于适配延迟安定时间，其中，安定参数用于在目标轨道上安置头部，并且基于稳定参数适应的速度来减小适应延迟。

10. 发明授权

US09418689B2 Data storage device generating an operating seek time profile as a function of a base seek time profile 有权
标题翻译：数据存储装置产生作为基本寻道时间曲线的函数的操作搜索时间曲线
公开(公告)号：US09418689B2
公开(公告)日：2016-08-16
申请号：US14706881
申请日：2015-05-07
申请人： Western Digital Technologies, Inc.
发明人： Mingji Lou , Orhan Beker , Lu Feng
IPC分类号： G11B5/596 , G11B5/55
CPC分类号： G11B5/5547
摘要： A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks. An operating seek time profile is generated as a function of a base seek time profile, wherein the seek time profiles define a seek time to seek the head radially over the disk by a seek length. A seek operation is executed to seek the head by a target seek length by at least generating a target seek time based on the target seek length and the operating seek time profile, and seeking the head the target seek length based on the target seek time.
摘要翻译：公开了一种数据存储装置，包括在包括多个轨道的盘上致动的头部。产生操作搜索时间曲线作为基本搜索时间曲线的函数，其中寻找时间曲线限定了寻找时间，以在盘上径向寻找头部寻找长度。执行寻道操作，通过至少基于目标寻找长度和操作查找时间曲线生成目标寻找时间，并且基于目标搜索时间寻找目标寻找长度来寻找目标寻找长度。

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