公开(公告)号：US11017820B1

公开(公告)日：2021-05-25

申请号：US16797749

申请日：2020-02-21

Applicant: Seagate Technology LLC

Inventor： Peng Boon Khoo ,  Xiong Liu ,  Li Hong Zhang

IPC: G11B33/14 ,  H05K5/03 ,  H05K9/00 ,  G11B25/04

Abstract: An electronic device which includes a cover, a base coupled to the cover to create an enclosure, a conductive layer positioned between the cover and the base and arranged to reduce radiation from entering the enclosure, and a gasket positioned between the cover and the base to create a seal and positioned between the conductive layer and the enclosure.

公开(公告)号：US10950264B2

公开(公告)日：2021-03-16

申请号：US16453301

申请日：2019-06-26

Applicant: Seagate Technology LLC

Inventor： Li Hong Zhang ,  Xiong Liu

IPC: G11B5/55 ,  G11B5/60 ,  G11B5/48

Abstract: A hard disk drive includes a first actuator and a second actuator. The first actuator is coupled to a first slider, which includes a first read transducer and a first write transducer. Both the first read transducer and the first write transducer are positioned away from a first longitudinal centerline of the first slider. The second actuator is coupled to a second slider, which includes a second read transducer and a second write transducer. Both the second read transducer and the second write transducer are positioned away from a second longitudinal centerline of the second slider.

公开(公告)号：US20200034118A1

公开(公告)日：2020-01-30

申请号：US16589660

申请日：2019-10-01

Applicant: Seagate Technology LLC

Inventor： Li Hong Zhang ,  WenXiang Xie ,  Xiong Liu

IPC: G06F7/58 ,  G11B7/13

Abstract: A method includes detecting noise in a laser output of a heat assisted magnetic recording device. The noise is converted into an electrical signal including a numerical value. A least significant digit of the numerical value is selected. The least significant digit is concatenated with another least significant digit from another detecting of another noise in another laser output to form a number.

公开(公告)号：US10528348B2

公开(公告)日：2020-01-07

申请号：US15914598

申请日：2018-03-07

Applicant: Seagate Technology LLC

Inventor： Xiong Liu ,  WenXiang Xie ,  Quan Li ,  Jian Qiang

IPC: G06F12/02 ,  G06F12/08 ,  G06F9/30 ,  G06F12/0893 ,  G06F12/0866 ,  G11B20/10 ,  G11B20/12

Abstract: In one implementation, this disclosure provides a method for executing a partial band rewrite operation comprising identifying a first track of a shingled data band to receive data of a write received at a shingled media storage device and writing a first subset of the received data to a media cache, where the first subset corresponds to the first track of the shingled data band to receive data of the write command. The method also includes writing a remaining subset of the received data to target locations within the shingled data band without updating data on the first track within the shingled data band corresponding to the first subset of the received data.

公开(公告)号：US10510378B1

公开(公告)日：2019-12-17

申请号：US16198467

申请日：2018-11-21

Applicant: Seagate Technology LLC

Inventor： YiChao Ma ,  Xiong Liu ,  Li Hong Zhang

IPC: G11B33/02

Abstract: Provided herein is an apparatus including a hard drive base. A number of disks are rotatably connected to the hard drive base, and there are a number of disk gaps between the disks. A shroud extends in a circumferential span around the disks, wherein the shroud extends less than the circumference of the disks. The shroud is positioned between the disk gaps and an upwardly sloping gas channel. A number of arcuate gas channels are in the shroud, wherein each arcuate gas channel is horizontally aligned with a corresponding disk gap. The arcuate gas channels connect the disk gaps to the upwardly sloping gas channel.

公开(公告)号：US20190341075A1

公开(公告)日：2019-11-07

申请号：US16221839

申请日：2018-12-17

Applicant: Seagate Technology LLC

Inventor： Xiong Liu ,  Quan Li ,  Ralph William Cross

IPC: G11B20/10 ,  G11B5/012 ,  G11B5/09

Abstract: A sequence of symbols is generated to describe a set of write data, the symbols having a length of nT, where T is a channel clock rate and n is an integer over a predetermined range. Bi-directional write currents are applied to a write pole to record the sequence of symbols to a magnetic storage medium. The write pole has an effective footprint with a downtrack length of mT, where m is an integer. The write currents are switched between a first rail current and a second rail current for alternating symbols, the write currents further transitioning to an intermediate current value for at least one channel clock period for symbols longer than 1T. Write currents are applied to the write pole when recording symbols having a length longer than mT using the effective footprint of the write pole as an interval.

公开(公告)号：US20190258402A1

公开(公告)日：2019-08-22

申请号：US15944235

申请日：2018-04-03

Applicant: Seagate Technology LLC

Inventor： Xiong Liu ,  Jiangnan Lin ,  WenXiang Xie

IPC: G06F3/06 ,  G06F12/10

Abstract: A data-storing method for accelerated read throughput of a channel received as part of a multi-channel data stream includes writing a first channel segment of the multi-channel data stream to a first continuous sequence of physical blocks along a first data track of a storage medium within a storage device and identifying a second channel segment of the multi-channel data stream as being a continuation of the first channel segment. The method further includes writing the second channel segment to a second continuous sequence of physical blocks along a second data track responsive to the identification, the second continuous sequence of physical blocks being offset from the first continuous sequence in a down-track direction by a minimum block offset, the minimum block offset representing at least a number of physical blocks on the storage medium that rotate below a read/write element of the storage device during a time that the read/write element is moved from the first data track to the second data track.

公开(公告)号：US10381049B2

公开(公告)日：2019-08-13

申请号：US15675876

申请日：2017-08-14

Applicant: Seagate Technology LLC

Inventor： Lihong Zhang ,  Xiong Liu ,  Aravind Pitty

IPC: G11B33/00 ,  G11B33/14 ,  H05K5/06 ,  G11B25/04

Abstract: The present disclosure relates to a data storage device housing component (and related data storage devices) that include a polymeric element attached to a surface thereof. The polymeric element includes a polymeric matrix and a plurality of nanofiller elements dispersed within the polymeric matrix to increase the thermal conductivity of the polymeric element as compared to a polymeric element that does not include the plurality of nanofiller elements. Also disclosed are related methods.

公开(公告)号：US20190205041A1

公开(公告)日：2019-07-04

申请号：US15858130

申请日：2017-12-29

Applicant: Seagate Technology LLC

Inventor： Jiangnan Lin ,  Xiong Liu ,  WenXiang Xie

IPC: G06F3/06 ,  G06F12/02 ,  G11B20/18 ,  G11B20/12

CPC classification number: G06F3/0617 ,  G06F3/0632 ,  G06F3/0644 ,  G06F3/0689 ,  G06F12/0223 ,  G06F2212/1032 ,  G06F2212/152 ,  G06F2212/21 ,  G06F2212/262 ,  G06F2212/70 ,  G11B20/1217 ,  G11B20/1889 ,  G11B2020/1242

Abstract: Implementations disclosed herein provide an apparatus including a storage media and a storage controller configured to divide physical storage space of the storage media into a plurality of media zones between an inner diameter (ID) and an outer diameter (OD) of the storage media, and write LBA sectors to the media zones in a direction from the ID to the OD and writing the data in the direction from the OD to the ID within each media zone.

公开(公告)号：US20190178785A1

公开(公告)日：2019-06-13

申请号：US15840763

申请日：2017-12-13

Applicant: Seagate Technology LLC

Inventor： Jian Chen ,  Xiong Liu ,  Wei Sung Lee ,  Erwin Mochtar Wijaya

IPC: G01N19/02 ,  G11B5/54

Abstract: Measuring ramp friction in a disk drive including receiving a lift tab ramp load time profile for a voice coil motor and determining a load torque profile for a lift tab on the ramp based at least on the received ramp load time profile. The measuring also includes receiving a lift tab ramp unload time profile for the voice coil motor and determining an unload torque profile for the lift tab on the ramp based at least on the received ramp unload time profile. The measuring also includes calculating a ramp friction torque component based on the determined load torque profile and unload torque profile.