Patents Assigned to Seagate Technologies
  • Methods and apparatus for selecting data density and track density values for magnetic recording media having variable bit aspect ratios
    Patent number: 9280987
    Abstract: An exemplary method for selecting data density values (e.g., bits per inch) and track density values (e.g., tracks per inch) for magnetic recording media having variable bit aspect ratios comprises obtaining a plurality of data density values and a plurality of track density values as a function of a corresponding plurality of bit error rates; determining a data density/track density correlation between the plurality of data density values and the plurality of track density values for at least one Sector Error Rate; and determining a data density capability value and a track density capability value that provides an areal density capability value that satisfies one or more predefined criteria (e.g., a substantially maximum areal density capability value) using the data density/track density correlation.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: Haoji Bao, Myint Ngwe Maung, Cheun Pin Tan, Jose Mari Toribio
  • Data storage management in a memory device
    Patent number: 9280477
    Abstract: The disclosure is related to systems and methods of managing data storage in a memory device. In a particular embodiment, a method is disclosed that includes receiving, in a data storage device, at least one data packet that has a size that is different from an allocated storage capacity of at least one physical destination location on a data storage medium in the data storage device for the at least one data packet. The method also includes storing the at least one received data packet in a non-volatile cache memory prior to transferring the at least one received data packet to the at least one physical destination location.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: Luke W. Friendshuh, Brian T. Edgar, Mark A. Gaertner
  • Materials for near field transducers and near field transducers containing same
    Patent number: 9281002
    Abstract: Disclosed herein are near field transducers (NFTs) that include either silver, copper, or aluminum and one or more secondary elements.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: Justin Glen Brons, Tong Zhao, Sethuraman Jayashankar, Steve C. Riemer, Michael C. Kautzky
  • Storage device and controller to selectively activate a storage media
    Patent number: 9282277
    Abstract: In a particular embodiment, a system includes a controller adapted to determine a data transfer rate associated with at least one data stream to be written to a storage media and to selectively activate at least one of a first memory and a second memory based on the data transfer rate to record the at least one data stream.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: John Edward Moon, Robert Dale Murphy, Paul Francis Kusbel, Todd Ray Strope, Preston Donald Sellers
  • Method of surface tension control to reduce trapped gas bubbles
    Patent number: 9278857
    Abstract: The embodiments disclose a method of surface tension control to reduce trapped gas bubbles in an imprint including modifying chemistry aspects of interfacial surfaces of an imprint template and a substrate to modify surface tensions, differentiating the interfacial surface tensions to control interfacial flow rates of a pre-cured liquid resist and controlling pre-cured liquid resist interfacial flow rates to reduce trapping gas and prevent trapped gas bubble defects in cured imprinted resist.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology Inc.
    Inventors: Sang-Min Park, Nobuo Kurataka, Gennady Gauzner
  • Data storage device enclosure and module
    Patent number: 9280174
    Abstract: An electronics module for a data storage device enclosure, and, data storage device enclosures. The module comprises an enclosure connector for connecting to the enclosure, at least one bay constructed and arranged to receive a data storage device, and a controller arranged to selectively provide access to storage devices to which it is connected. The module has a communications path between the controller and the enclosure connector by which the controller can communicate with storage devices in the enclosure. The module also has a first communications path to the data storage device when received in the bay by which the controller can communicate with that data storage device. The module also has a second communications path to the data storage device when received in the bay by which that data storage device can be accessed from outside the module.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: Andrew Goodwin, Christopher Girard
  • Magnetic devices including near field transducer
    Patent number: 9280989
    Abstract: An apparatus having at least an air bearing surface (ABS), the apparatus including a near field transducer (NFT) positioned adjacent the ABS of the apparatus, wherein the NFT includes a plasmonic material; and not greater than about 200 ppm of one or more microalloy dopants.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: March 8, 2016
    Assignee: Seagate Technology LLC
    Inventors: Philip G. Pitcher, Sami C. Antrazi
  • DATA WRITER WITH FLUX DENSITY INSERT
    Publication number: 20160064017
    Abstract: A data writer may be generally configured at least with a write pole adjacent to and separated from a side shield and a trailing shield. The side shield may be formed of a first material and configured with a trailing box region that is at least partially filled with a flux density insert formed of a second material that is different than the first material.
    Type: Application
    Filed: November 11, 2015
    Publication date: March 3, 2016
    Applicant: Seagate Technology LLC
    Inventors: Swaraj Basu, Mark Gubbins, Muhammad Asif Bashir, Prim Gangmei
  • Surface feature manager
    Patent number: 9274064
    Abstract: Provided herein is an apparatus, including a mapping means for generating a map of locations of surface features of an article based on photon-detector signals corresponding to photons scattered from the surface features of the article, and a surface feature manager. The surface manager is configured to locate a predetermined surface feature of the surface features of the article based, at least in part, on the map of the surface features locations, irradiate photons of a first power onto the location of the predetermined surface feature to analyze the predetermined surface feature, and irradiate photons of a second power onto the location of the predetermined surface feature to remove the predetermined surface feature.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David M. Tung
  • Apparatuses and methods having a bearing shield arrangement
    Patent number: 9273729
    Abstract: Various aspects of the present disclosure are directed towards an apparatus/method including rolling elements, an outer ring surrounding an inner ring and the inner and outer rings guiding rotation of the rolling elements in a rotation region therebetween, and a cap secured to the inner ring. The apparatus further includes a bearing shield arrangement secured to one of the outer and inner rings and configured with the other of the outer and inner rings to define a gap for the flow of vapor or lubricant from the rotation region through a vapor restricting pathway.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Kenneth L. Pottebaum, Scott A. Bengtson, David D. Koester
  • Methods of forming layers
    Patent number: 9275833
    Abstract: A method of forming a layer, the method including providing a substrate having at least one surface adapted for deposition thereon; and directing a particle beam towards the surface of the substrate, the particle beam including moderately charged ions (MCIs), substantially all the MCIs independently have charges from ±2 to ±6 and kinetic energies of not greater than about 200 eV, wherein the MCIs do not penetrate more than about 30 ? into the surface of the substrate to form a layer on the substrate.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventor: Philip George Pitcher
  • Memory wear control
    Patent number: 9274712
    Abstract: The disclosure is related to systems and methods of controlling wear of a memory. In a particular embodiment, a system is disclosed that comprises a memory and a performance governor circuit coupled to the memory. The performance governor circuit is adapted to control a wear of the memory as a function of time.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Timothy Richard Feldman, Jonathan Williams Haines, Brett Alan Cook
  • Heater to keep reader head in stable temperature range
    Patent number: 9275663
    Abstract: Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A temperature condition of a read/write head in a storage device is ascertained and it is determined whether the temperature condition is within a predetermined range of temperature conditions in which the read/write head exhibits instability. If the temperature condition of the read/write head is within the predetermined range, a power level of a head heater of the read/write head is adjusted to change the temperature condition of the read/write head to be outside of the predetermined range.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Jung Wook Hur, Tae Won Kim, Haejung Lee
  • Reading narrow data tracks with multiple wide readers
    Patent number: 9275675
    Abstract: Technologies are described herein for utilizing multiple, wide readers to read narrow data tracks on a magnetic recording media in a storage device. A system for reading a data track on a magnetic recording media comprises a plurality of reader elements, the width of each reader element being an integer greater than 1 multiple of a width of the data tracks on the recording media. The system further comprises a multi-reader decoder module operably connected to the plurality of reader elements. Each of the reader elements is configured to read a magnetic signal from the magnetic recording media. The multi-reader decoder module is configured to receive a read signal from each of the reader elements, and decode the data on the data track based on the read signals from the reader elements.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Mehmet Fatih Erden, Jason Charles Jury
  • Skew compensation in a patterned medium
    Patent number: 9275676
    Abstract: Apparatus for providing skew compensation in a patterned medium, such as but not limited to a self-assembling bit patterned medium. In accordance with some embodiments, the apparatus includes a transducer and a rotatable substrate. The substrate has a plurality of rows of spaced apart data recording dots. Each row of dots is angularly offset from an immediately adjacent row responsive to a skew angle of the transducer. The rows of dots are arranged into concentric zones of hypertracks. Each zone has an arcuate timing field segment which extends across the zone and is angularly discontinuous with the timing field segment of an immediately adjacent zone.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 1, 2016
    Assignee: Seagate Technology LLC
    Inventors: Bruce Buch, Phillip L. Steiner
  • Template misalignment and eccentricity error compensation for a patterned medium
    Patent number: 9269384
    Abstract: Compensation for template misalignment and offset induced eccentricity errors for a multi-template patterned medium, such as a bit patterned medium (BPM) used to record data in a data storage device. In some embodiments, a rotatable patterned data recording medium has a plurality of concentric tracks, each track having data fields interspersed with servo fields and timing fields. A data transducer senses the respective data, servo and timing fields on a target track. A disc-locked clock (DLC) circuit generates separate servo clock and data clock signals that are frequency modulated responsive to variations in locations of the timing fields.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: February 23, 2016
    Assignee: Seagate Technology LLC
    Inventor: Bruce Buch
  • Chemical pinning to direct addressable array using self-assembling materials
    Patent number: 9269388
    Abstract: A substrate having an arrangement of self-assembling magnetic domains and a method of fabrication therefor. In some embodiments, a substrate is patterned with a plurality of chemically contrasted alignment features, and a block copolymer having a magnetic component and a non-magnetic component is deposited onto the substrate. The block copolymer self-assembles into a sequence of magnetic domains responsive to the alignment features. The period of the alignment features is between about 2 times and about 10 times the period of the magnetic domains.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 23, 2016
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, XiaoMin Yang
  • Fluid dynamic bearing motor including plastic
    Patent number: 9267541
    Abstract: Provided herein, in some embodiments, is an apparatus including a plastic component; a stationary component including a thrustplate; a rotatable component including the plastic component affixed to a sleeve; and at least a first fluid dynamic bearing formed between the thrustplate and an opposing surface of the rotatable component.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: February 23, 2016
    Assignee: Seagate Technology LLC
    Inventors: Alan Lyndon Grantz, Klaus Diete Kloeppel
  • Apparatus for locking a component drawer into a chassis
    Patent number: 9269400
    Abstract: Provided herein is an apparatus, including: a component drawer, a chassis including an opening configured to removably receive the component drawer therethrough, a cover for the component drawer, and means for locking the component drawer in the chassis during movement of the component drawer into the chassis with the cover in a storage position, and for releasing the component drawer from the chassis when the cover is the non-storage position.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: February 23, 2016
    Assignee: Seagate Technology LLC
    Inventors: Francis Degay, Damien Vauvel, Philippe Pardonnet
  • Magnetic stack including cooling element
    Patent number: 9269379
    Abstract: Various embodiments of a magnetic stack are disclosed. In one or more embodiments, the magnetic stack includes first and second shield layers, and a magnetically responsive lamination disposed between the first and second shield layers. The magnetically responsive lamination can be configured to receive a sense current IS therethrough. The magnetic stack also includes a cooling element disposed between the first and second shield layers and thermally coupled to the magnetically responsive lamination. The cooling element can be configured to receive a bias current IB therethrough. And the cooling element can be configured to cool the magnetically responsive lamination during a read function.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: February 23, 2016
    Assignee: Seagate Technology LLC
    Inventors: David Deen, Eric Singleton, Vasudevan Ramaswamy, Mohammend Patwari, Taras Pokhil, Jae-Young Li