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1. 发明授权

US09928861B1 Determining bit aspect ratios for multiple, independent, actuator storage device 有权
公开(公告)号：US09928861B1
公开(公告)日：2018-03-27
申请号：US15652852
申请日：2017-07-18
申请人： Seagate Technology LLC
发明人： Mehmet Fatih Erden , Mark Allen Gaertner
IPC分类号： G11B5/55
CPC分类号： G11B5/5534 , G11B5/5586
摘要： Performance data of two or more actuators of a storage device is determined. The actuators independently move respective two or more heads over one or more disks coupled to a spindle motor. The independent movement of the two or more heads causes coupling therebetween that affects tracking of the two or more heads. Based on the performance data, bit aspect ratios associated with each of the two or more heads are selected that minimize performance impacts due to the coupling.

2. 发明申请

US20110058281A1 DISK DRIVE SUSPENSION 有权
标题翻译：磁盘驱动器暂停
公开(公告)号：US20110058281A1
公开(公告)日：2011-03-10
申请号：US12858547
申请日：2010-08-18
申请人： Hajime ARAI , Hideki FUCHINO
发明人： Hajime ARAI , Hideki FUCHINO
IPC分类号： G11B5/48
CPC分类号： G11B5/4833 , G11B5/486 , G11B5/5586
摘要： A flexure with conductors is provided with a flexure tail portion. The flexure tail portion includes a metal base, an electrically insulating layer, and a conductive member. The metal base is formed with a plurality of apertures. A damper is attached to the flexure tail portion. The damper includes a viscoelastic member and a metallic constrained plate. The viscoelastic member has first and second surfaces. The first surface of the viscoelastic member is secured to the flexure tail portion. The constrained plate is secured to the second surface of the viscoelastic member. The constrained plate extends longitudinally relative to the metal base along the conductive member. The conductive member and the constrained plate face each other with the viscoelastic member therebetween.
摘要翻译：具有导体的挠曲件设置有挠曲尾部。弯曲尾部包括金属基底，电绝缘层和导电构件。金属基底形成有多个孔。阻尼器连接到弯曲尾部。阻尼器包括粘弹性构件和金属约束板。粘弹性构件具有第一和第二表面。粘弹性构件的第一表面固定到弯曲尾部。约束板被固定到粘弹性构件的第二表面。约束板沿着导电构件相对于金属基座纵向延伸。导电构件和约束板之间具有粘弹性构件。

3. 发明申请

US20100125703A1 MAGNETIC DISK DEVICE AND CONTROL METHOD THEREOF 审中-公开
标题翻译：磁盘设备及其控制方法
公开(公告)号：US20100125703A1
公开(公告)日：2010-05-20
申请号：US12570922
申请日：2009-09-30
申请人： Yutaka Horiguchi
发明人： Yutaka Horiguchi
IPC分类号： G06F12/00
CPC分类号： G11B19/26 , G11B5/5586
摘要： According to one embodiment, a magnetic disk device is configured to access a disk by a head according to a command from a computer. The magnetic disk device includes a communication module, an information generator, and a controller. The communication module receives a command from the computer. The information generator generates first information indicating the access situation of the disk based on the command received by the communication module. The controller controls the driving speed of at least one of the head and the disk based on the first information generated by the information generator.
摘要翻译：根据一个实施例，磁盘装置被配置为根据来自计算机的命令由磁头访问磁盘。磁盘装置包括通信模块，信息发生器和控制器。通信模块从计算机接收命令。信息发生器基于由通信模块接收的命令产生指示盘的访问状况的第一信息。控制器基于由信息发生器产生的第一信息来控制头和盘中的至少一个的驱动速度。

4. 发明授权

US11862194B1 Adaptive data detection on a nonlinear channel 有权
公开(公告)号：US11862194B1
公开(公告)日：2024-01-02
申请号：US18060602
申请日：2022-12-01
申请人： International Business Machines Corporation
发明人： Roy Cideciyan , Simeon Furrer , Mark Alfred Lantz
IPC分类号： G11B20/10 , G11B20/24 , G11B5/55
CPC分类号： G11B20/10287 , G11B20/10046 , G11B20/24 , G11B5/5586
摘要： A data storage system comprises: a head configured to produce a signal representing data stored on a storage medium; an estimator configured to determine an estimated signal comprising a superposition of an estimated linear portion of a partial-response equalizer output and an estimated nonlinear portion of the signal; a bank of noise whitening filters configured for filtering a difference between the signal and the estimated signal; a branch metric calculator configured to calculate branch metrics based on the filtered signal; and an adaptive data-dependent noise-predictive maximum likelihood sequence detector configured to generate an output stream representing the data based on the one or more branch metrics.

5. 发明授权

US11688423B2 Split-actuator disk drive that uses microactuator feedforward to reduce effects of cross-actuator coupling 有权
公开(公告)号：US11688423B2
公开(公告)日：2023-06-27
申请号：US17556844
申请日：2021-12-20
申请人： KABUSHIKI KAISHA TOSHIBA , TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
发明人： Gary W. Calfee , Richard M. Ehrlich , Thorsten Schmidt , Gabor Szita
IPC分类号： G11B5/55 , G11B5/48 , G11B5/596
CPC分类号： G11B5/5586 , G11B5/4813 , G11B5/5547 , G11B5/5578 , G11B5/59622
摘要： In a multi-actuator drive, the effect of moving a first actuator (the so-called “aggressor actuator”) in on a second actuator (the so-called “victim actuator”) is reduced or compensated for. A victim feedforward signal is added to a microactuator control signal of the victim actuator in response to a voice-coil motor (VCM) control signal that is applied to the aggressor actuator. The feedforward signal is configured to compensate for disturbances to the victim microactuator caused by VCM commands provided to the aggressor actuator. The feedforward signal is based on a transfer function that models commands added to the victim microactuator, which is coupled to the head of the victim actuator, as a function of the aggressor VCM control signal applied to the aggressor actuator.

6. 发明授权

US08576511B1 Disk drive executing log structured writes to physical zones based on power mode 有权
标题翻译：基于电源模式，磁盘驱动器执行对物理区域的结构化写入
公开(公告)号：US08576511B1
公开(公告)日：2013-11-05
申请号：US13165727
申请日：2011-06-21
申请人： Kenny T. Coker , William B. Boyle
发明人： Kenny T. Coker , William B. Boyle
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/5586 , G11B5/012 , G11B20/1217 , G11B2020/1242
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of physical zones including a first physical zone and a second physical zone, wherein the first physical zone comprises data tracks recorded at a first data rate and the second physical zone comprises data tracks recorded at a second data rate different than the first data rate. A write command is received including data and at least one logical block address (LBA). One of the first and second physical zones is selected based on a power parameter affecting a power consumption of the disk drive, and the data is written to a data sector in the selected physical zone. A physical block address (PBA) is assigned to the data sector, and an LBA to PBA map is updated for the written data.
摘要翻译：公开了一种磁盘驱动器，包括在包括多个物理区域的磁盘上启动的磁头，包括第一物理区域和第二物理区域，其中第一物理区域包括以第一数据速率记录的数据轨道，而第二物理区域包括数据以与第一数据速率不同的第二数据速率记录的轨道。接收包括数据和至少一个逻辑块地址（LBA）的写入命令。基于影响磁盘驱动器的功耗的功率参数来选择第一和第二物理区域中的一个，并且将数据写入所选择的物理区域中的数据扇区。物理块地址（PBA）被分配给数据扇区，并且针对写入的数据更新LBA到PBA映射。

7. 发明申请

US20040233569A1 Method and apparatus of acceleration-based track seeking servo control of disk drive 失效
标题翻译：基于加速度轨迹寻找磁盘驱动器伺服控制的方法和装置
公开(公告)号：US20040233569A1
公开(公告)日：2004-11-25
申请号：US10848167
申请日：2004-05-19
申请人： Samsung Electronics Co., Ltd.
发明人： Da-woon Chung
IPC分类号： G11B005/596
CPC分类号： G11B5/5547 , G11B5/5582 , G11B5/5586
摘要： A method and apparatus directed to acceleration-based track-seeking servo control of a disk drive, which minimize jerk generated at the start and end of track seeking, thereby reducing mechanical noise of the disc drive while shortening track-seek time. In the method directed to acceleration-based track seeking servo control of a disk drive, a transducer is moved to a target track by a track seeking control using an acceleration trajectory of a function where acceleration change is zero at the start and end of track seeking.
摘要翻译：一种针对磁盘驱动器的基于加速度的追踪伺服控制的方法和装置，其最小化在磁道搜索的开始和结束时产生的冲击，从而在缩短磁道搜索时间的同时减少磁盘驱动器的机械噪声。在针对磁盘驱动器的基于加速度的磁道寻求伺服控制的方法中，通过使用轨迹搜索控制的加速度轨迹将传感器移动到目标轨道，该加速轨迹在轨迹寻找的开始和结束时加速度变化为零。

8. 发明授权

US12020733B2 Sector metrics to estimate health of written data 有权
公开(公告)号：US12020733B2
公开(公告)日：2024-06-25
申请号：US17723263
申请日：2022-04-18
申请人： Western Digital Technologies, Inc.
发明人： Niranjay Ravindran , Weldon M. Hanson , Hiroyasu Masuda , David T. Flynn , Zarko Popov
IPC分类号： G11B5/55
CPC分类号： G11B5/556 , G11B5/5573 , G11B5/5586
摘要： Various illustrative aspects are directed to a data storage device comprising data tracks N and N−1, and one or more processing devices, configured to identify, during a track write on the data track N, a write abort event based upon an expected risk for the data track N−1 exceeding a risk threshold, read one or more sectors of the data track N−1 and collect one or more corresponding sector metrics, verify the one or more sectors based upon the collected sector metrics, wherein the verifying comprises assigning each of the one or more sectors as one of a readable or a non-readable sector, and continue the track write on the data track N upon determining each of the one or more sectors is a readable sector, or recovering and relocating the data track N−1 based on determining at least one of the sectors is a non-readable sector.

9. 发明授权

US09934803B1 Data storage device attenuating multiple actuator coupling disturbance 有权
公开(公告)号：US09934803B1
公开(公告)日：2018-04-03
申请号：US15585933
申请日：2017-05-03
申请人： Western Digital Technologies, Inc.
发明人： Tetsuo Semba , Jeffrey J. Dobbek , Bryan Rowan , Masahito Kobayashi , Kevin Tzou
IPC分类号： G11B5/55 , G11B5/596
CPC分类号： G11B5/5578 , G11B5/5547 , G11B5/556 , G11B5/5582 , G11B5/5586 , G11B5/59694
摘要： A data storage device is disclosed comprising a first actuator configured to actuate a first head over a first disk, and a second actuator configured to actuate a second head over a second disk. The first actuator is controlled based on a first feed-forward seek profile to seek the first head over the first disk, and the second actuator is controlled to position the second head over a second data track on the second disk including to process the first feed-forward seek profile to attenuate a coupling disturbance from the first actuator.

10. 发明申请

US20160125902A1 MAGNETIC DISK DEVICE AND CONTROL METHOD 审中-公开
标题翻译：磁盘设备及控制方法
公开(公告)号：US20160125902A1
公开(公告)日：2016-05-05
申请号：US14637008
申请日：2015-03-03
申请人： Kabushiki Kaisha Toshiba
发明人： Masafumi Iwashiro
IPC分类号： G11B5/55
CPC分类号： G11B5/5547 , G11B5/5586
摘要： According to one embodiment, there is provided a magnetic disk device including a casing, a seek mechanism, and a controller. The seek mechanism is attached to the casing and configured to make a magnetic head seek a target track on a magnetic disk. The controller is configured to feedback-control the seek mechanism so as to reduce a reaction force acting on the casing during an acceleration period of seek by the seek mechanism.
摘要翻译：根据一个实施例，提供一种包括壳体，寻道机构和控制器的磁盘装置。搜索机构附接到壳体并且被配置为使磁头在磁盘上寻找目标轨道。所述控制器被配置为反馈控制所述寻道机构，以便在所述寻道机构的寻求加速期间减小作用在所述壳体上的反作用力。

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