公开(公告)号：US10148499B2

公开(公告)日：2018-12-04

申请号：US15347093

申请日：2016-11-09

Applicant: Seagate Technology LLC

Inventor： Martin R. Furuhjelm

IPC: H04L12/24 ,  H04L29/08

Abstract: Computing nodes are coupled via a network to communicate as a tree structure that performs a distributed computation. The nodes include a root node, intermediate nodes, and leaf nodes. At least some of the nodes obtain redundant results that are communicated together with a final result to the root node. The root node compares the redundant results to the final result to verify the final result.

公开(公告)号：US10147446B1

公开(公告)日：2018-12-04

申请号：US16020465

申请日：2018-06-27

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Zoran Jandric ,  Vasudevan Ramaswamy

IPC: G11B11/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/60 ,  G11B11/105 ,  G11B5/00

Abstract: An apparatus comprises a slider configured for heat assisted magnetic recording and comprising a substrate. At least one component of the slider generates heat when energized. At least one thermal via extends through a portion of the slider from a location proximate the component to the substrate. The thermal via is configured to conduct heat away from the component and to the substrate.

公开(公告)号：US10140180B1

公开(公告)日：2018-11-27

申请号：US15344423

申请日：2016-11-04

Applicant: Seagate Technology LLC

Inventor： Deepak Sridhara ,  Ara Patapoutian ,  Prafulla B Reddy

IPC: G06F11/10 ,  H03M13/05

Abstract: Systems and methods are disclosed for performing segment-based outer code recovery at a data storage device. An apparatus may comprise a circuit configured to disable outer code error recovery, and perform a read operation spanning a plurality of segments of a data storage medium, a segment including a plurality of sectors. The circuit may identify one or more segments from the plurality of segments that have one or more sectors with an error. For an identified segment of the one or more segments, the circuit may perform a re-read operation with outer code error recovery enabled, and perform outer code recovery on sectors with an error within the identified segment.

公开(公告)号：US20180336925A1

公开(公告)日：2018-11-22

申请号：US15938357

申请日：2018-03-28

Applicant: Seagate Technology LLC

Inventor： Chris R. Fulkerson ,  Abhay T. Kataria

IPC: G11B19/04 ,  G11B20/10 ,  G11B20/18

CPC classification number: G11B19/041 ,  G11B20/10009 ,  G11B20/1217 ,  G11B20/18 ,  G11B2020/10898 ,  G11B2020/1869

Abstract: Embodiments described herein provide an apparatus that is operable with a disk drive. The apparatus includes a memory device operable to store a plurality of bit sets. Each bit set identifies a track and a sector of the disk drive and a number of times that the track of the disk drive has been written. A controller of the disk drive is operable to increment the number when the track is written. Each bit set comprises a number of bits that is established according to track location of the disk drive.

公开(公告)号：US20180335578A1

公开(公告)日：2018-11-22

申请号：US16050506

申请日：2018-07-31

Applicant: Seagate Technology LLC

Inventor： Richard C.A. Pitwon ,  Alexander C. Worrall ,  Myles E.R. Spence ,  Alistair Allen Miller

IPC: G02B6/38

CPC classification number: G02B6/3826 ,  G02B6/3869 ,  G02B6/3873 ,  G02B6/3882 ,  G02B6/389 ,  G02B6/3897

Abstract: Optical connectors may include various portions, or structures, to provide a plurality of degrees of movement to optical ferrules. The optical ferrules may be linearly movable along one or more axes and rotationally moveable about one or more axes for alignment and coupling to corresponding optical ferrules. The optical connectors may be integrated with, or in conjunction with, other non-optical connectors such as electrical connectors, e.g., located on a drive carrier.

公开(公告)号：US10134436B2

公开(公告)日：2018-11-20

申请号：US15871781

申请日：2018-01-15

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Sethuraman Jayashankar ,  Michael C. Kautzky

IPC: G11B13/08 ,  G11B5/31 ,  G11B7/1387 ,  G11B7/24059 ,  C22C5/02 ,  C22C5/06 ,  C22C9/02 ,  C22C9/08 ,  C22C11/04 ,  C22C13/00 ,  C22C18/02 ,  C22C19/03 ,  C22C20/00 ,  C22C21/00 ,  C22C21/02 ,  C22C21/10 ,  C22C22/00 ,  C22C27/00 ,  C22C27/02 ,  C22C27/06 ,  C22C38/06 ,  G11B5/48 ,  C01F7/00 ,  C01G5/00 ,  G11B5/60 ,  C23C14/58 ,  C22C5/04 ,  C22C5/10 ,  C22C9/00 ,  C22C9/04 ,  C22C9/05 ,  C22C9/06 ,  C22C9/10 ,  C22C19/07 ,  C22C21/06 ,  C22C24/00 ,  C22C28/00 ,  C22C30/02 ,  G11B5/00 ,  B32B15/01

Abstract: A method of forming a near field transducer (NFT) layer, the method including depositing a film of a primary element, the film having a film thickness and a film expanse; and implanting at least one secondary element into the primary element, wherein the NFT layer includes the film of the primary element doped with the at least one secondary element.

公开(公告)号：US20180329633A1

公开(公告)日：2018-11-15

申请号：US15901339

申请日：2018-02-21

Applicant: Seagate Technology LLC

Inventor： Radoslav Danilak

IPC: G06F3/06 ,  G11C29/52 ,  G11C29/04 ,  G11C16/34 ,  G11C16/26 ,  G11C16/14 ,  G11C16/10 ,  G06F12/02 ,  G06F11/10 ,  G11C14/00 ,  G11C17/00

Abstract: The present disclosure relates to examples of controlling recycling of blocks of memory. In one example implementation according to aspects of the present disclosure, a method comprises allocating at least one block of memory selected from a subset of blocks to be written in accordance with an equalizing technique to equalize a variation between blocks of memory based on at least one factor. The method further comprises resupplying the subset of blocks.

公开(公告)号：US10127937B1

公开(公告)日：2018-11-13

申请号：US15433235

申请日：2017-02-15

Applicant: Seagate Technology LLC

Inventor： James Gary Wessel ,  Zoran Jandric

IPC: G11B11/00 ,  G11B5/48 ,  G11B5/00 ,  G11B5/60

Abstract: A slider having an air bearing surface is configured for heat-assisted magnetic recording (HAMR). The slider comprises a write pole, a near-field transducer (NFT) proximate the write pole, a return pole magnetically coupled to the write pole, and an optical waveguide configured to receive light from a light source and couple the light to the NFT. The optical waveguide comprises first and second opposing major surfaces and opposing first and second edges connected to the first and second major surfaces. An optically opaque overlay is disposed on one or both of the first and second major surfaces of the optical waveguide. The optically opaque overlay can be light reflective or light absorbing.

公开(公告)号：US10114614B2

公开(公告)日：2018-10-30

申请号：US14328504

申请日：2014-07-10

Applicant: Seagate Technology LLC

Inventor： Bruce Douglas Buch ,  Jon David Trantham

IPC: G06F7/58

Abstract: Random numbers are generated using entropic properties associated with circuit hardware. Consistent with one method, a switching voltage regulator circuit is used to generate a random number. Data that is responsive to switching states of the switching voltage regulator circuit is generated. A multi-bit random number is then generated from the generated data.

公开(公告)号：US20180307609A1

公开(公告)日：2018-10-25

申请号：US15496761

申请日：2017-04-25

Applicant: Seagate Technology, LLC

Inventor： Jian Qiang ,  Harry Tiotantra ,  Kai Chen ,  WenXiang Xie ,  Andrew Michael Kowles

IPC: G06F12/0868 ,  G06F17/30

CPC classification number: G06F12/0868 ,  G06F17/30961 ,  G06F2212/1024 ,  G06F2212/281

Abstract: Apparatus and method for managing metadata in a data storage device. In some embodiments, a metadata object has entries that describe data sets stored in a non-volatile write cache. During an archival (persistence) operation, the metadata object is divided into portions, and the portions are copied in turn to a non-volatile memory at a rate that maintains a measured latency within a predetermined threshold. A journal is formed of time-ordered entries that describe changes to the metadata object after the copying of the associated portions to the non-volatile memory. The journal is subsequently stored to the non-volatile memory, and may be subsequently combined with the previously stored portions to recreate the metadata object in a local memory. The measured performance latency may be related to a specified customer command completion time (CCT) for host commands.