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1. 发明授权

US11881238B1 Sector mapout of low coercivity media for enhancing aerial density 有权
公开(公告)号：US11881238B1
公开(公告)日：2024-01-23
申请号：US17880251
申请日：2022-08-03
申请人： Western Digital Technologies, Inc.
发明人： Zarko Popov , Wayne H. Vinson , Xing Huo , Mao Nishiyama
IPC分类号： G11B27/36 , G11B20/18 , G11B5/596 , G11B5/012
CPC分类号： G11B5/59655 , G11B5/012
摘要： Various illustrative aspects are directed to a data storage device comprising one or more disks, an actuator assembly comprising one or more disk heads; and one or more processing devices, configured to detect a plurality of areas with a coercivity lower than a threshold on the one or more disks; map out one or more sectors in each of the plurality of lower coercivity areas on the one or more disks; write data to, or read data from, the one or more disks, based at least in part on mapping out the one or more sectors in each of the plurality of lower coercivity areas. In some embodiments, the writing or reading data comprises writing data to, or reading data from, one or more sectors of the one or more disks that are not mapped out.

2. 发明授权

US11694717B1 Data storage device with adaptive write policy and enhanced longevity 有权
公开(公告)号：US11694717B1
公开(公告)日：2023-07-04
申请号：US17829653
申请日：2022-06-01
申请人： WESTERN DIGITAL TECHNOLOGIES, INC.
发明人： Zarko Popov , Wayne H. Vinson , Ryoheita Hattori
IPC分类号： G11B7/00 , G11B5/60 , G11B5/00
CPC分类号： G11B5/6029 , G11B2005/0021
摘要： Illustrative aspects are directed to a data storage device comprising one or more disks; an actuator mechanism comprising one or more heads, and configured to position a head proximate to a disk surface; and one or more processing devices. The one or more processing devices are configured to: measure a read quality of a location on the disk surface; modify a refresh frequency for performing refresh writes at the location, based on the read quality at the location; in response to the refresh frequency at the location becoming stabilized, determine an integrated track interference (xTI) per write metric at the location; and, in response to determining that the xTI per write metric at the location is below a threshold for the xTI per write metric, modify an operating parameter of the head at the location to improve a longevity metric.

3. 发明授权

US09025270B1 Electronic system with current conservation mechanism and method of operation thereof 有权
标题翻译：具有电流保护机制的电子系统及其运行方法
公开(公告)号：US09025270B1
公开(公告)日：2015-05-05
申请号：US14188381
申请日：2014-02-24
申请人： Western Digital Technologies, Inc.
发明人： Shane G. Nowell , Wayne H. Vinson , Danny J. Kastler
IPC分类号： G11B21/04 , G11B15/46 , G11B5/596 , G11B19/28
CPC分类号： G11B19/28 , G11B5/5547
摘要： An apparatus includes: a media motor; a media mounted on the media motor; a head, over the media, the motion of the head controlled by a head actuation motor; a motor driver, coupled to the media motor, configured to adjust a media speed; and control circuitry configured to: coast the media motor in preparation for accelerating the head, and activate the head actuation motor including accelerating the head in a first direction for repositioning the head over the media.
摘要翻译：一种装置包括：介质马达; 安装在媒体电机上的介质; 头部，在介质上，由头致动马达控制的头部的运动; 耦合到所述介质马达的电动机驱动器，被配置为调节介质速度; 以及控制电路，其被配置为：使所述介质马达滑行以准备加速所述头部，并且激活所述头部致动马达，包括沿着第一方向加速所述头部，以将所述头部重新定位在所述介质上。

4. 发明授权

US09923562B1 Data storage device state detection on power loss 有权
公开(公告)号：US09923562B1
公开(公告)日：2018-03-20
申请号：US15184936
申请日：2016-06-16
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Travis D. Fox
IPC分类号： H03K21/40 , G06F3/06
CPC分类号： H03K21/403 , G06F3/0619 , G06F3/0634 , G06F3/064 , G06F3/0679
摘要： Upon a first transition from a first state to a second state, a first bit in a memory unit comprising a plurality of bits is programmed. Upon a first transition from the second state to the first state, a second bit in the memory unit is programmed, the second bit being before the first bit in the sequence of the plurality of bits. Upon a second transition from the first state to the second state, a third bit in the memory unit is programmed, the third bit being subsequent to the first bit by at least two bits in the sequence of the plurality of bits. Upon a second transition from the second state to the first state, a fourth bit in the memory unit is programmed, the fourth bit being before the third bit in the sequence of the plurality of bits.

5. 发明授权

US09466321B1 Angular position tracking of data accesses to mitigate risk of data loss 有权
标题翻译：数据访问的角位置跟踪，以减轻数据丢失的风险
公开(公告)号：US09466321B1
公开(公告)日：2016-10-11
申请号：US14732015
申请日：2015-06-05
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Marika Meertens , Edwin S. Olds
IPC分类号： G11B15/18 , G11B5/596 , G11B27/10 , G11B27/34 , G11B15/43
CPC分类号： G11B5/59627 , G11B15/43 , G11B27/107 , G11B27/34 , G11B2220/90
摘要： Systems, apparatuses, and methods use angular position tracking in mitigating data loss risks stemming from adjacent track interference (ATI), wide area track erasure (WATER), and/or other issues. A storage device includes a rotational magnetic storage medium divided into a group of tracks and a controller communicably coupled to the rotational magnetic storage medium. The controller is configured to: determine, based on an angular position of a write operation within a group of tracks, whether the angular position of the write operation overlaps a previously written area in the group of tracks; in the event the angular position of the write operation overlaps the previously written area in the group of tracks, increment a counter; and in the event the counter exceeds a counter threshold, perform a data loss risk mitigation procedure.
摘要翻译：系统，装置和方法使用角位置跟踪来减轻来自相邻轨道干扰（ATI），广域轨迹擦除（WATER）和/或其他问题的数据丢失风险。存储装置包括被分成一组轨道的旋转磁存储介质和可通信地耦合到旋转磁存储介质的控制器。控制器被配置为：基于轨道组内的写入操作的角位置来确定写入操作的角位置是否与该组轨道中的预先写入的区域重叠; 在写操作的角位置与轨道组中的先前写入区域重叠的情况下，递增计数器; 并且在计数器超过计数器阈值的情况下，执行数据丢失风险缓解程序。

6. 发明授权

US09128639B1 Scheduling commands in a dependent array of disk drives 有权
标题翻译：在依赖的磁盘驱动器阵列中调度命令
公开(公告)号：US09128639B1
公开(公告)日：2015-09-08
申请号：US14065354
申请日：2013-10-28
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Edwin S. Olds
IPC分类号： G06F13/00 , G06F13/28 , G06F3/06
CPC分类号： G06F3/0689 , G06F3/0611 , G06F3/0619 , G06F3/0659 , G06F3/0665
摘要： An array of disk drives is disclosed comprising a controller, a plurality of disk drives, wherein the controller is configured to transmit a first access command out of a group of access commands to a first disk drive in the array; transmit a plurality of the access commands out of the group of access commands to other disk drives in the array; and transmit a completion status to the first disk drive, wherein the completion status identifies a status of the plurality of access commands transmitted to the other disk drives.
摘要翻译：公开了一种磁盘驱动器阵列，其包括控制器，多个磁盘驱动器，其中所述控制器被配置为将一组访问命令中的第一访问命令发送到所述阵列中的第一磁盘驱动器; 将多个访问命令从该组访问命令中传送到该阵列中的其他磁盘驱动器; 并向第一磁盘驱动器发送完成状态，其中完成状态识别发送到其他磁盘驱动器的多个访问命令的状态。

7. 发明授权

US12112778B2 Data storage device with adjacent track interference-aware servo trajectories 有权
公开(公告)号：US12112778B2
公开(公告)日：2024-10-08
申请号：US18232073
申请日：2023-08-09
申请人： WESTERN DIGITAL TECHNOLOGIES, INC.
发明人： Wayne H. Vinson
IPC分类号： G11B5/54 , G11B5/596
CPC分类号： G11B5/59688
摘要： Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position a selected head among one or more heads proximate to a corresponding disk surface of the one or more disks; and one or more processing devices. The one or more processing devices are configured to detect adjacent track interference (ATI) due to a write operation in an adjacent sector to a subject sector on the corresponding disk surface; and to generate a readback servo trajectory for the subject sector, based on a position error signal (PES) for the subject sector, a PES for the adjacent sector, and the ATI.

8. 发明公开

US20240221785A1 DATA STORAGE DEVICE WITH ADJACENT TRACK INTERFERENCE-AWARE SERVO TRAJECTORIES 审中-公开
公开(公告)号：US20240221785A1
公开(公告)日：2024-07-04
申请号：US18232073
申请日：2023-08-09
申请人： WESTERN DIGITAL TECHNOLOGIES, INC.
发明人： Wayne H. Vinson
IPC分类号： G11B5/596
CPC分类号： G11B5/59688
摘要： Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position a selected head among one or more heads proximate to a corresponding disk surface of the one or more disks; and one or more processing devices. The one or more processing devices are configured to detect adjacent track interference (ATI) due to a write operation in an adjacent sector to a subject sector on the corresponding disk surface; and to generate a readback servo trajectory for the subject sector, based on a position error signal (PES) for the subject sector, a PES for the adjacent sector, and the ATI.

9. 发明授权

US10943620B1 Data storage device updating refresh metric based on quality of victim data track during write operation 有权
公开(公告)号：US10943620B1
公开(公告)日：2021-03-09
申请号：US16912912
申请日：2020-06-26
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , David R. Hall , Stephanie L. Aho , Zarko Popov
IPC分类号： G11B27/36 , G11B21/08 , G11B5/012
摘要： A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of data tracks, including a first data track and a second data track. In connection with writing to at least part of the first data track, a quality metric is measured for at least part of the first data track. In connection with writing to at least part of the second data track, a refresh metric is updated based on the write to at least part of second data track and the quality metric measured for the first data track, and at least the first data track is refreshed based on the refresh metric.

10. 发明授权

US09588898B1 Fullness control for media-based cache operating in a steady state 有权
标题翻译：基于媒体缓存的丰富度控制在稳定状态下运行
公开(公告)号：US09588898B1
公开(公告)日：2017-03-07
申请号：US14728293
申请日：2015-06-02
申请人： Western Digital Technologies, Inc.
发明人： Wayne H. Vinson , Robert Brummet
IPC分类号： G06F12/00 , G06F12/08 , G06F3/06
CPC分类号： G06F12/0871 , G06F2212/1021 , G06F2212/1044 , G06F2212/21 , G06F2212/224 , G06F2212/281 , G06F2212/311 , G06F2212/604 , G06F2212/70
摘要： A data storage system incorporating a write-caching subsystem that implements a steady-state media-based cache is described. The steady-state of the media-based cache can be obtained by directing non-sequential write commands and data received from the host device to multiple independent cache locations and, thereafter, selectively copying or moving such data between the caches so that none of the caches are either too full or too empty. In this manner, a non-sequential write command can be cached in a power-safe manner until it is efficient and/or convenient to write such data to the mainstore portion of the physical media.
摘要翻译：描述了包含实现基于稳态基于媒体的高速缓存的写缓存子系统的数据存储系统。可以通过将非顺序写入命令和从主机设备接收到的数据引导到多个独立高速缓存位置来获得基于媒体的高速缓存的稳态，此后，可以在高速缓存之间选择性地复制或移动这样的数据，缓存已满或太空。以这种方式，可以以电力安全的方式缓存非顺序写入命令，直到将这样的数据写入物理介质的主体部分是有效和/或方便的。

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