公开(公告)号：US09842047B2

公开(公告)日：2017-12-12

申请号：US14688515

申请日：2015-04-16

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Tim Rausch ,  Edward Gage

IPC: G06F12/02 ,  G11B20/12 ,  G11B5/012

CPC classification number: G06F12/0238 ,  G06F2212/1044 ,  G06F2212/152 ,  G06F2212/21 ,  G06F2212/70 ,  G11B5/012 ,  G11B20/1217 ,  G11B2020/1238 ,  G11B2020/1267 ,  G11B2020/1292

Abstract: A storage device controller addresses consecutively-addressed portions of incoming data to consecutive data tracks on a storage medium and writes the consecutively-addressed portions to the consecutive data tracks in a non-consecutive track order. In one implementation, the storage device controller reads the data back from the consecutive data tracks in a consecutive address order in a single sequential read operation.

公开(公告)号：US20170330591A1

公开(公告)日：2017-11-16

申请号：US15154010

申请日：2016-05-13

Applicant: Seagate Technology LLC

Inventor： Steven Granz ,  Edward Gage ,  Alfredo Chu ,  Wenzhong Zhu

IPC: G11B7/1263 ,  G11B7/126 ,  G11B20/12 ,  G11B5/60 ,  G11B7/1267 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/6088 ,  G11B7/126 ,  G11B7/1267 ,  G11B20/1217 ,  G11B2005/0021 ,  G11B2020/1238

Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.

公开(公告)号：US09728206B2

公开(公告)日：2017-08-08

申请号：US14686561

申请日：2015-04-14

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Edward Gage

IPC: G11B5/09 ,  G11B5/012 ,  G11B20/18 ,  G11B11/105 ,  G11B5/00 ,  G11B20/12 ,  G11B5/596

CPC classification number: G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device includes a transducer head including a first write element configured to write data at a first write width and a second write element configured to write data at a second write width less than the first write width. According to one implementation, the first write element writes data at a first linear density and to alternating data tracks and the second write element writes data at a second linear density and to data tracks interlaced with the alternating data tracks.

公开(公告)号：US09401162B1

公开(公告)日：2016-07-26

申请号：US14826779

申请日：2015-08-14

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Edward Gage

IPC: G11B5/39 ,  G11B5/09 ,  G11B5/60

CPC classification number: G11B5/3932 ,  G11B5/3906 ,  G11B5/3912 ,  G11B5/3948 ,  G11B5/3958 ,  G11B5/398

Abstract: A read sensor that includes an air bearing surface and a synthetic antiferromagnetic (SAF) structure. The read sensor also includes a first free layer (FL) above the SAF structure and a second FL below the SAF structure. The first FL and the second FL have differing widths at the bearing surface. The first FL, the second FL and the SAF structure are configured to provide a reader resolution that corresponds to a difference between a first width of the first FL and a second width of the second FL.

Abstract translation: 包括空气轴承表面和合成反铁磁（SAF）结构的读取传感器。 读取传感器还包括在SAF结构之上的第一自由层（FL）和SAF结构之下的第二FL。 第一FL和第二FL在轴承表面具有不同的宽度。 第一FL，第二FL和SAF结构被配置为提供对应于第一FL的第一宽度和第二FL的第二宽度之间的差的读取器分辨率。

公开(公告)号：US09747942B2

公开(公告)日：2017-08-29

申请号：US14688598

申请日：2015-04-16

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Tim Rausch ,  Edward Gage

IPC: G11B5/02 ,  G11B5/012 ,  G11B20/12 ,  G11B5/00 ,  G11B5/60 ,  G11B20/10

CPC classification number: G11B20/1217 ,  G11B5/012 ,  G11B5/02 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/0037 ,  G11B20/1258 ,  G11B2005/0021 ,  G11B2020/1087 ,  G11B2020/10888 ,  G11B2020/1238 ,  G11B2020/1264 ,  G11B2020/1292

Abstract: A storage device controller is configured to select one of multiple written track widths for a storage location based on a write attribute of data to be recorded at the storage location. According to one implementation, the storage device controller is further configured to select a power level for a heat-assisted magnetic recording (HAMR) device based on the write attribute.

公开(公告)号：US20170200468A1

公开(公告)日：2017-07-13

申请号：US14993694

申请日：2016-01-12

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Mehmet F. Erden ,  Kenneth A. Haapala ,  Wei Tian ,  Edward Gage

IPC: G11B20/12

CPC classification number: G11B20/1217 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/4813 ,  G11B5/4886 ,  G11B20/10009 ,  G11B2020/1238

Abstract: Implementations described and claimed herein includes a storage device comprising a plurality of readers, including a first subset of readers configured to read a first subset of tracks and a second subset of readers configured to read a second subset of tracks, the first subset of tracks being wider than the second subset of tracks. In another implementation, the readers in the first subset of readers are wider than the readers in the second subset of readers. The wider readers may be configured to recover servo information and the narrow readers may be configured to recover data information. The storage devices may include two-dimensional magnetic recording, conventional perpendicular magnetic recording, shingled magnetic recording, multi-sensor magnetic recording, and interlaced magnetic recording.

公开(公告)号：US09601154B2

公开(公告)日：2017-03-21

申请号：US14699834

申请日：2015-04-29

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Kaizhong Gao ,  Edward Gage

IPC: G11B20/12 ,  G06F12/02 ,  G11B5/012

CPC classification number: G11B20/1217 ,  G06F12/0238 ,  G06F2212/1044 ,  G06F2212/152 ,  G06F2212/21 ,  G06F2212/70 ,  G11B5/012 ,  G11B5/09 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device includes a controller that directs incoming data to a storage location based on a capacity of a region or surface of a magnetic disc. According to one implementation, the storage device controller writes new data to data tracks in a first series of data tracks on the magnetic disc until a capacity condition is satisfied. Once the capacity condition is satisfied, the storage device controller writes new data to a second series of data tracks on the storage medium that are interlaced with data tracks of the first series.

公开(公告)号：US20160307595A1

公开(公告)日：2016-10-20

申请号：US15089239

申请日：2016-04-01

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Tim Rausch ,  Edward Gage

IPC: G11B20/10 ,  G11B20/12

CPC classification number: G11B20/10212 ,  G11B5/012 ,  G11B20/1217 ,  G11B20/1833 ,  G11B2005/0021 ,  G11B2020/10898 ,  G11B2020/1238 ,  G11B2020/1292 ,  G11B2020/1869

Abstract: A storage device includes a data degradation management module that tracks a risk of data degradation by incrementing a track write counter of a first data track responsive to each data write command to a second data track, such as a data track directly adjacent to the first data track. If a count of the track write counter exceeds a count threshold, one or more post-write scan operations are performed to assess and/or repair data degradation of the first data track.

Abstract translation: 存储设备包括数据降级管理模块，其通过将响应于每个数据写入命令的第一数据轨道的磁道写入计数器递增到第二数据磁道（例如直接与第一数据相邻的数据磁道）来跟踪数据劣化的风险 跟踪。 如果磁道写入计数器的计数超过计数阈值，则执行一个或多个写入后扫描操作以评估和/或修复第一数据磁道的数据劣化。

公开(公告)号：US20160148637A1

公开(公告)日：2016-05-26

申请号：US14806417

申请日：2015-07-22

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Minjie Ma ,  Kaizhong Gao ,  Edward Gage

IPC: G11B7/1263 ,  G11B20/18 ,  G11B20/12 ,  G11B5/09

CPC classification number: G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device disclosed herein stores data on a storage media using interlaced magnetic recording (IMR) and it includes a storage controller configured to determine power levels applied to the power source such that power levels applied to heat various tracks can be different from each other. An implementation of the storage device determines the track density, linear densities and power levels for even and odd tracks in IMR HAMR for the storage media.

公开(公告)号：US09324362B1

公开(公告)日：2016-04-26

申请号：US14688667

申请日：2015-04-16

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Tim Rausch ,  Edward Gage

IPC: G11B5/09 ,  G11B20/10 ,  G11B20/12

CPC classification number: G11B20/10212 ,  G11B5/012 ,  G11B20/1217 ,  G11B20/1833 ,  G11B2005/0021 ,  G11B2020/10898 ,  G11B2020/1238 ,  G11B2020/1292 ,  G11B2020/1869

Abstract: A storage device includes a data degradation management module that tracks a risk of data degradation by incrementing a track write counter of a first data track responsive to each data write command to a second data track, such as a data track directly adjacent to the first data track. If a count of the track write counter exceeds a count threshold, one or more post-write scan operations are performed to assess and/or repair data degradation of the first data track.

Abstract translation: 存储设备包括数据降级管理模块，其通过将响应于每个数据写入命令的第一数据轨道的磁道写入计数器递增到第二数据磁道（例如直接与第一数据相邻的数据磁道）来跟踪数据劣化的风险 跟踪。 如果磁道写入计数器的计数超过计数阈值，则执行一个或多个写入后扫描操作以评估和/或修复第一数据磁道的数据劣化。