公开(公告)号：US09818445B2

公开(公告)日：2017-11-14

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：US09773517B2

公开(公告)日：2017-09-26

申请号：US14685417

申请日：2015-04-13

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Edward Gage ,  Huaqing Yin ,  Yonghua Chen

IPC: G11B21/02 ,  G11B5/49 ,  G11B5/31 ,  G11B5/012 ,  G11B5/127 ,  G11B5/48

CPC classification number: G11B5/4984 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/4886

Abstract: A storage device includes a transducer head with multiple write elements having write poles of different sizes. For example, the transducer head may include two write poles of different width configured to write to a same surface of a storage medium. A controller of the storage device is configured to selectively engage one of the multiple write elements to write data to the storage medium.

公开(公告)号：US20160148645A1

公开(公告)日：2016-05-26

申请号：US14724523

申请日：2015-05-28

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Kenneth A. Haapala ,  Kaizhong Gao ,  Edward Gage

IPC: G11B20/12 ,  G06F12/02

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 multi-reader transducer head with a first reader and a second reader having an effective cross-track separation equal to a multiple of a defined track-pitch of a storage medium of the storage device. The effective cross-track separation may permit for a simultaneous data read of two non-adjacent data tracks.

Abstract translation: 存储装置包括具有第一读取器和第二读取器的多读取器换能器头，其具有等于存储装置的存储介质的确定的轨道间距的倍数的有效跨轨道间隔。 有效的跨轨道分离可以允许两个非相邻数据轨道的同时数据读取。

公开(公告)号：US20160148644A1

公开(公告)日：2016-05-26

申请号：US14699834

申请日：2015-04-29

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Kaizhong Gao ,  Edward Gage

IPC: G11B20/12

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.

Abstract translation: 存储装置包括基于磁盘的区域或表面的容量将输入数据引导到存储位置的控制器。 根据一个实施方式，存储设备控制器将新数据写入到磁盘上的第一系列数据磁道中的数据磁道，直到满足容量条件。 一旦满足容量条件，存储设备控制器将新数据写入与第一系列的数据轨迹隔行的存储介质上的第二系列数据轨道。

公开(公告)号：US10090016B2

公开(公告)日：2018-10-02

申请号：US15667904

申请日：2017-08-03

Applicant: Seagate Technology LLC

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

IPC: G11B5/02 ,  G11B20/12 ,  G11B5/012 ,  G11B5/00 ,  G11B5/60 ,  G11B5/48 ,  G11B7/0037 ,  G11B20/10

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：US10008231B2

公开(公告)日：2018-06-26

申请号：US15795044

申请日：2017-10-26

Applicant: Seagate Technology LLC

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

IPC: G11B11/00 ,  G11B7/1263 ,  G11B7/126 ,  G11B5/60 ,  G11B7/1267 ,  G11B20/12 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/012 ,  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：US09747943B2

公开(公告)日：2017-08-29

申请号：US15427949

申请日：2017-02-08

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Kaizhong Gao ,  Edward Gage

IPC: G11B20/12 ,  G11B5/09 ,  G06F12/02

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：US09741364B2

公开(公告)日：2017-08-22

申请号：US14806417

申请日：2015-07-22

Applicant: Seagate Technology LLC

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

IPC: G11B5/02 ,  G11B5/09 ,  G11B5/012 ,  G11B20/18 ,  G11B11/105 ,  G11B5/00 ,  G11B20/12 ,  G11B5/596 ,  G11B5/60

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：US09679601B2

公开(公告)日：2017-06-13

申请号：US15089239

申请日：2016-04-01

Applicant: Seagate Technology LLC

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

IPC: G11B5/09 ,  G11B20/10 ,  G11B20/18 ,  G11B20/12 ,  G11B5/012 ,  G11B5/00

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.

公开(公告)号：US09524743B2

公开(公告)日：2016-12-20

申请号：US14734235

申请日：2015-06-09

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Kaizhong Gao ,  Edward Gage

IPC: G11B5/09 ,  G11B7/1263 ,  G11B5/74 ,  G11B5/012 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/012 ,  G11B5/09 ,  G11B5/746 ,  G11B2005/0021 ,  G11B2220/252

Abstract: A heat-assisted magnetic recording (HAMR) device includes a controller that selects a power for operating a heat source for a data write to a target data track. According to one implementation, the controller selects the power based on an assessment of whether the target data track is bounded by any data-storing tracks. A first power is selected when the data track is not bounded by any data-storing tracks and a second lower power is selected when the data track is bounded by one or more data-storing tracks. In another implementation, the controller writes to different partitioned regions of a storage media with different powers of the heat source. The controller selects a storage location for data based on an expected write error rate and environmental conditions within the HAMR device.

Abstract translation: 热辅助磁记录（HAMR）装置包括控制器，其选择用于操作热源以用于对目标数据轨道进行数据写入的功率。 根据一个实施方案，控制器基于对目标数据轨道是否由任何数据存储轨道限定的评估来选择功率。 当数据轨道不被任何数据存储轨道限制时，选择第一功率，并且当数据轨道由一个或多个数据存储轨道限定时选择第二较低功率。 在另一实现中，控制器向不同功率的热源的存储介质写入不同的分区。 控制器根据预期的写错误率和HAMR设备内的环境条件选择数据的存储位置。