Patents Assigned to Seagate Technologies
  • Patent number: 9691423
    Abstract: Devices that include a near field transducer (NFT), the NFT having at least one external surface; and at least one adhesion layer positioned on at least a portion of the at least one external surface, the adhesion layer including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: June 27, 2017
    Assignee: Seagate Technology LLC
    Inventors: Xiaoyue Huang, Michael C. Kautzky
  • Patent number: 9690346
    Abstract: Methods and apparatuses for sharing power load across multiple input supplies in a peripheral device. Current utilized by the peripheral device from a first voltage supply is monitored and if the current exceeds a first threshold, a voltage converter is utilized to supplement the current from the first voltage supply with current from a second voltage supply up to a maximum total current threshold for the second voltage supply.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: June 27, 2017
    Assignee: Seagate Technology LLC
    Inventor: James Douglas Bucher, II
  • Patent number: 9683295
    Abstract: Provided herein is an apparatus, including a substrate; an etch stop layer overlying the substrate, wherein the etch stop layer is substantially resistant to etching conditions; and a patterned layer overlying the etch stop layer, wherein the patterned layer is substantially labile to the etching conditions, and wherein the patterned layer comprises a number of features including substantially consistent feature profiles among regions of high feature density and regions of low feature density.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: Michael R. Feldbaum, Koichi Wago, Gennady Gauzner, Kim Y. Lee, David S. Kuo
  • Patent number: 9685177
    Abstract: A multi-sensor reader that includes a first sensor that has a sensing layer with a magnetization that changes according to an external magnetic field. The first sensor also includes first and second side biasing magnets having a magnetization substantially along a first direction. The first and second side biasing magnets align the magnetization of the sensing layer substantially along the first direction when the sensing layer is not substantially influenced by the external magnetic field. The multi-sensor reader further includes a second sensor that is stacked over the first sensor. The second sensor includes a reference layer that has a magnetization that is set substantially along a second direction.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: Zhiguo Ge, Shaun E. Mckinlay, Eric W. Singleton, LiWen Tan, Jae Young Yi
  • Patent number: 9685178
    Abstract: A lateral spin valve reader includes a channel layer having a first end that is proximate to a bearing surface and a second end that is away from the bearing surface. The lateral spin valve reader also includes a detector structure disposed over an upper surface of a first portion of the channel layer that is proximate to the first end of the channel layer. A spin injection structure disposed below a lower surface of a second portion of the channel layer is proximate to the second end of the channel layer. An area of overlap between the spin injection structure and the second portion of the channel layer is substantially larger than an area of overlap between the detector structure and the first portion of the channel layer.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: David A. Deen, Taras G. Pokhil, Eric Singleton, Mohammed Shariat Ullah Patwari
  • Patent number: 9684455
    Abstract: A method for providing efficient processing for many concurrent streams of sequential I/O requests is provided. In response to receiving an I/O request, the method includes determining if the I/O request corresponds to an active stream. If the request corresponds to an active stream, then the method includes updating an existing active list entry of an active list corresponding to the active stream, and if the I/O request does not correspond to an active stream, then instead converting and configuring an inactive list entry of an inactive list into a new active list entry. The inactive list stores available but unallocated resources, and the active list stores allocated resources. The active list includes a head at one end of the active list and a tail at an opposite end. The active list head corresponds to a most recently used entry, and the tail corresponds to a least recently used entry.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: Zachary David Traut, Michael David Barrell
  • Patent number: 9684613
    Abstract: A storage controller of a data storage system maintains, for each interrupt vector, (1) a pending status that indicates whether one or more completions are pending in the completion queue (CQ) associated with the interrupt vector, and (2) an in-progress status that indicates whether or not the storage controller is currently in the process of composing an interrupt. The storage controller utilizes these two statuses to reduce or eliminate spurious interrupts by preventing an interrupt from being composed if there are no completions in the CQ, by preventing an interrupt from being composed if the corresponding interrupt mask has been set before composition of the interrupt begins, and by preventing an interrupt from being sent to the host system in cases where the interrupt mask was set after composition of the interrupt began, but before the interrupt has been sent to the host system.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: Nital Patwa, Timothy Canepa, Yimin Chen
  • Patent number: 9681576
    Abstract: A drawer slide system for a chassis is provided. The drawer slide system includes a first slide affixed to a drawer. The drawer slide system allows the drawer to extend from the chassis. The drawer slide system also includes a slide assembly slidingly coupled to the first slide. The slide assembly includes a second slide and a first damped stop assembly, which includes a first stop tray and a first elastomer, arranged within the first stop tray. The first elastomer reduces shock to the chassis when the drawer is fully seated within the chassis.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Christopher Ellis Schroeder, David Michael Keffeler, Andrew Rudolph Heyd, Michael Joseph Russell
  • Patent number: 9679599
    Abstract: Method and apparatus adaptively adjusting power levels of a data transducer in a data storage device. In some embodiments, an initial power value is applied to a powered element of a transducer to write user data from a host device to a rotatable data recording medium. An exception condition is declared responsive to a measured parameter. The transducer is used to read data from an evaluation track using a range of different input power values for the powered element. A different, new power value is selected for the powered element responsive to an error rate associated with each of the range of different input power values, with the new power value being lower than the initial power value. Thereafter, the new power value is applied to the powered element during a subsequent writing of user data to the rotatable data recording medium.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventor: Jason M. Feist
  • Patent number: 9679589
    Abstract: A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. The non-magnetic layer may include a corrugated surface facing the additional magnetic layer. The corrugated surface is configured to enhance uniaxial anisotropy in the read sensor.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Sameh Hassan, Wonjoon Jung, Mark Kief, Marcus Ormston
  • Patent number: 9679590
    Abstract: A device including a magnetic structure, the magnetic structure having a substrate adjacent surface and a second, opposing surface, the magnetic structure having a near field transducer (NFT), wherein the NFT includes gold or an alloy thereof, and is positioned at the second surface an overcoat structure; and a film structure, the film structure positioned between the magnetic structure and the overcoat structure, the film structure having a total thickness of not greater than about 100 ?, and the film structure including: a first interfacial structure having a first and a second opposing surface; a second interfacial structure having a first and a second opposing surface; and an intermediate structure wherein the first surface of the first interfacial structure is positioned adjacent the NFT of the magnetic structure, and the second surface of the second interfacial structure is positioned adjacent the overcoat structure, and the intermediate structure is positioned between the first interfacial structure an
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Philip G. Pitcher, Sami Antrazi
  • Patent number: 9679593
    Abstract: Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems. Electrical connections utilize conductive epoxy for physically and electrically connecting electrically conductive trace connection pads with one or more surfaces of piezoelectric microactuators. Electrical connections include better conductivity by utilizing plural surface portions of electrical connection pads. The result is a more robust and predictable performance for high data resolution within disk drives.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Gary Berscheit, Jackson Brandts
  • Patent number: 9680651
    Abstract: Apparatus and method for secure data shredding in an imperfect data storage device. In some embodiments, a hash function is applied to multi-bit random sequence to generate an output hash. A combinatorial logic function logically combines the output hash with a secret to provide an output value. The random string is processed into a plurality of secret shares which are stored in a first location in a non-volatile memory and the output value is stored in a different, second location of the memory. The secret is subsequently shredded by applying an erasure operation upon the secret shares in the first location of the memory.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventor: William Erik Anderson
  • Patent number: 9678864
    Abstract: A device includes one or more data storage media having a main storage area, and includes a non-volatile cache memory and a controller. The controller stores a plurality of data packets into a plurality of physical locations in the main storage area. Each of the data packets is associated with a different logical block address (LBA), and each of the physical locations is associated with a different physical location address (PLA). The controller generates mapping information that links the different LBAs to the different PLAs. Upon detecting a soft error when reading a data packet stored in a physical location, the controller relocates the data packet associated with the soft error to a physical location of the non-volatile cache memory. The controller also marks the physical location as a suspect location. The controller updates the mapping information to reflect the relocation of the data packet associated with the soft error.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 13, 2017
    Assignee: Seagate Technology LLC
    Inventors: Jun Cai, AndiSumaryo Sutiawan, Jeetandra Kella, ChuanPeng Ong, Mark Allen Gaertner, Brian T. Edgar
  • Patent number: 9672848
    Abstract: Devices having air bearing surfaces (ABS), the devices including a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein at least one of a portion of the peg, a portion of the disc, or a portion of both the peg and the disc include a multilayer structure including at least two layers including at least one layer of a first material and at least one layer of a second material, wherein the first material and the second material are not the same and wherein the first and the second materials independently include aluminum (Al), antimony (Sb), bismuth (Bi), boron (B), barium (Ba), calcium (Ca), cerium (Ce), chromium (Cr), cobalt (Co), copper (Cu), erbium (Er), gadolinium (Gd), gallium (Ga), germanium (Ge), gold (Au), hafnium (Hf), indium (In), iridium (Ir), iron (Fe), lanthanum (La), magnesium (Mg), manganese (Mn), molybdenum (Mo), nickel (Ni), ni
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: June 6, 2017
    Assignee: Seagate Technology LLC
    Inventors: Martin Blaber, Tong Zhao, Justin Brons, Michael Kautzky
  • Patent number: 9666465
    Abstract: Provided herein is an apparatus including a loader configured to position a workpiece in a holding fixture. In some embodiments, the holding fixture includes an opening configured to removably receive the workpiece therein and hold the workpiece in a target position within the opening. The apparatus also includes position detecting means configured to translate a sensor to a predetermined location relative to the holding fixture and further configured to translate the workpiece by a predetermined increment relative to the predetermined location to position the workpiece in the target position.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 30, 2017
    Assignee: Seagate Technology LLC
    Inventors: Daniel Peinovich, Samuel Lewis Tanaka, Thomas Larson Greenberg
  • Patent number: 9666235
    Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus including a base deck forming a sealed cavity. A filter coupled to a surface of the base deck within the cavity filters particulate from a flow of gas in the cavity. The recirculation filter including a protrusion extending over a surface of a storage medium within the cavity that diverts gas from a surface of the storage medium toward the filter. A bypass channel, defined by a portion of the cavity and a portion of the filter, in conjunction with the protrusion forms a pressure differential that draws a first portion of the diverted gas through the filter by bypassing the filter with a second portion of the diverted gas.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: May 30, 2017
    Assignee: Seagate Technology LLC
    Inventors: Iraj Jabbari, Robert A. Alt, Jeffrey L. Bruce, Jeffrey James Croxall
  • Patent number: 9666220
    Abstract: Devices that include a near field transducer (NFT), the NFT having a disc and a peg, and the peg having five surfaces thereof; and at least one adhesion layer positioned on at least one of the five surfaces of the peg, the adhesion layer including one or more of the following: yttrium (Y), tin (Sn), iron (Fe), copper (Cu), carbon (C), holmium (Ho), gallium (Ga), silver (Ag), ytterbium (Yb), chromium (Cr), tantalum (Ta), iridium (Ir), zirconium (Zr), yttrium (Y), scandium (Sc), cobalt (Co), silicon (Si), nickel (Ni), molybdenum (Mo), niobium (Nb), palladium (Pd), titanium (Ti), rhenium (Re), osmium (Os), platinum (Pt), aluminum (Al), ruthenium (Ru), rhodium (Rh), vanadium (V), germanium (Ge), tin (Sn), magnesium (Mg), iron (Fe), copper (Cu), tungsten (W), hafnium (Hf), carbon (C), boron (B), holmium (Ho), antimony (Sb), gallium (Ga), manganese (Mn), silver (Ag), indium (In), bismuth (Bi), zinc (Zn), ytterbium (Yb), and combinations thereof.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: May 30, 2017
    Assignee: Seagate Technology LLC
    Inventors: Vijay Karthik Sankar, Tong Zhao, Yongjun Zhao, Michael C. Kautzky, Hui Brickner, Sarbeswar Sahoo
  • Patent number: 9656367
    Abstract: An assembly includes a carrier device having proximal and distal ends. The carrier device includes a workpiece platform along the proximal end. The workpiece platform supports one or more slider bars. The carrier device attaches to a lapping machine. An adaptive component, including at least one spring, has a first portion that couples to the carrier device and a second portion that couples to a grinding-slicing machine.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: May 23, 2017
    Assignee: Seagate Technology LLC
    Inventors: Yuhong Xiong, Marc Ronshaugen, Joel Hoehn, Kevin Mayer, Paul Gallup, Gordon Jones
  • Patent number: D789930
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: William D. Webb, Robert D. Swinton