Patents Assigned to Seagate Technologies
  • Near field transducer (NFT) including peg and disc of different materials
    Patent number: 9721593
    Abstract: Devices having air bearing surfaces (ABS), the devices include 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 the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: August 1, 2017
    Assignee: Seagate Technology LLC
    Inventors: Martin Blaber, Michael A. Seigler, Michael C. Kautzky, Tong Zhao, Justin Brons, John C. Duda, Yuhang Cheng
  • Data reader with resonant tunneling
    Patent number: 9721596
    Abstract: A data reader may have an resonant tunnel structure disposed between first and second magnetic structures. The resonant tunnel structure can be configured with a spacer layer disposed between first and second barrier layers. The first barrier layer can have a first thickness that is smaller than a second thickness of the second barrier layers with the thicknesses each measured along a common plane to provide resonant tunneling for the data reader.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 1, 2017
    Assignee: Seagate Technology LLC
    Inventors: David A. Deen, Thomas E. Dunn
  • Varying write pole side shield gap
    Patent number: 9721590
    Abstract: A magnetic element can be constructed by forming a write pole with a tip portion that continuously extends from an air bearing surface (ABS) along a plane orthogonal to the ABS to a body portion that continuously extends from the tip portion distal the ABS. A first write gap layer can then be deposited in contact with the write pole before a processing layer is deposited in contact with the first write gap layer. A magnetic shield may then be formed atop the processing layer with the magnetic shield being separated from the write pole by a first gap distance on the ABS throughout the tip portion and by a second gap distance distal the ABS along the plane orthogonal to the ABS along the body portion. The first and second gap distances can be measured parallel to the ABS with the second gap distance being greater than the first gap distance.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: August 1, 2017
    Assignee: Seagate Technology LLC
    Inventors: Marcus B. Mooney, Angela B. Moore, Aji Baby, Neil P. McLarnon, Alison M. Bell
  • Adaptive fastener access tool
    Patent number: 9718159
    Abstract: A tool may be configured at least with a fastener that can be accessed with a shaped bit. A controller portion of the tool can be arranged to predict bit deflection that enables a tool configuration to be adapted in response to actual bit deflection to conform to the predicted bit deflection.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: August 1, 2017
    Assignee: Seagate Technology LLC
    Inventors: Shawn A. Ruden, Kevin J. Spiczka, Brad E. Rowell
  • Attestation of data sanitization
    Patent number: 9716594
    Abstract: Systems and methods are disclosed for performing data sanitization at a data storage device (DSD). In an embodiment, an apparatus may comprise a controller configured to receive a data sanitization command from a host, perform a data sanitization operation to securely erase data from a memory, produce an attestation including information related to the data sanitization operation, and sign the attestation to produce a signed attestation. In another embodiment, a memory device may store instructions that cause a processor to perform a method comprising performing a data sanitization operation to securely erase data from a data storage medium, generating an attestation including information related to the data sanitization operation, and digitally signing the attestation using an authentication key.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Manuel A. Offenberg, Monty Forehand
  • Dissipating heat during device operation
    Patent number: 9715904
    Abstract: Apparatus for dissipating heat during the operation of a device. In accordance with some embodiments, the apparatus compares spaced-apart first and second heat sources. A thermally conductive plate is disposed between the first and second heat sources. A thermal interface layer is contactingly disposed between the plate and the first heat source, and has a relatively higher thermal conductivity so that heat generated by the first heat source passes through the thermal interface layer and to the plate. A thermal barrier layer is contactingly disposed between the plate and the second heat source to mechanically support the plate relative to the second heat source. The thermal barrier layer has a relatively lower thermal conductivity to thermally isolate the conductive plate from the second heat source.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventor: William L. Rugg
  • Data writer with shaped write coil
    Patent number: 9715888
    Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Muhammad Asif Bashir, Kirill A. Rivkin, JianHua Xue, Beverley R. McConnell, Wei Tian
  • Modular data storage device testing system
    Patent number: 9715896
    Abstract: A data storage device testing system may be configured with at least a test slot, a loader assembly, and an exchange assembly. The loader assembly can be positioned to respectively engage and disengage a test deck with the test slot. The exchange assembly may be configured to open an access port portion of the test deck and subsequently replace a tested data storage component housed within the first test deck with an untested data storage component.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Michael Louis Rancour, Brett Robert Herdendorf, Ronald Eldon Anderson
  • Data storage component test deck
    Patent number: 9715897
    Abstract: A test deck may be employed as part of a data storage component testing system. A test deck can consist of at least a bottom cover mating to a top cover to define an enclosed testing region configured to house a data storage medium, transducing head, and head suspension. The top cover may have an access port occupied by a door providing access to the enclosed testing region.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Michael Louis Rancour, Brett Robert Herdendorf, Ronald Eldon Anderson
  • Data reader shield seed buffer
    Patent number: 9715892
    Abstract: A data reader can be configured with at least a magnetoresistive stack contacting one or more magnetic shields. The magnetoresistive stack can be separated from a magnetic shield by a seed lamination on an air bearing surface with the seed lamination consisting of at least three sub-layers that are constructed with different material compositions.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 25, 2017
    Assignee: Seagate Technology LLC
    Inventors: Sameh Sayad Ali Hassan, Patrick G. McCafferty, Marcus W. Ormston, Kevin A. McNeill
  • Optical signal waveguide dispersion filter
    Patent number: 9711930
    Abstract: An apparatus includes a curved multimode polymer waveguide having at least one inflection point and a doped region being doped with an amplifying dopant. An optical pump source or electrical pump source is configured to excite the doped region and amplify the optical signal transmitting along the curved multimode polymer waveguide.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: July 18, 2017
    Assignee: Seagate Technology LLC
    Inventors: Richard C. A. Pitwon, Alexander C. Worrall
  • Spin-signal enhancement in a lateral spin valve reader
    Patent number: 9711171
    Abstract: A lateral spin valve reader that includes a detector structure located proximate to a bearing surface and a spin injection structure located away from the bearing surface. The lateral spin valve reader also includes a channel layer extending from the detector structure to the spin injection structure. An exterior cladding, disposed around the channel layer, suppresses spin-scattering at surfaces of the channel layer.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: July 18, 2017
    Assignee: Seagate Technology LLC
    Inventors: David A. Deen, Taras G. Pokhil
  • Lateral spin valve reader with in-plane detector
    Patent number: 9704515
    Abstract: A lateral spin valve reader includes a detector located proximate to a bearing surface of the reader, a spin injector located away from the bearing surface, and a channel layer that substantially extends from the detector to the spin injector. The channel layer and the detector are substantially in a same plane.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: July 11, 2017
    Assignee: Seagate Technology LLC
    Inventors: David A. Deen, Levent Colak, Thomas Roy Boonstra
  • Data writer with graded side shields
    Patent number: 9704510
    Abstract: A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. The side shields may wrap around a leading tip of the write pole to form a box shield.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: July 11, 2017
    Assignee: Seagate Technology LLC
    Inventors: Lei Lu, Kirill Rivkin, Xuelian Xu, Huaqing Yin
  • Environmentally controlling an enclosure
    Patent number: 9704538
    Abstract: An apparatus and associated method contemplating a sealed container operably enclosing a storage device in an operating environment. A storage device controller is operably coupled to the storage device and configured to monitor operational parametric values of the storage device. An environment modifier is operably coupled to the container and configured to selectively alter the operating environment. A container controller is configured to selectively activate the environment modifier in response to parametric values from the storage device controller.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 11, 2017
    Assignee: Seagate Technology LLC
    Inventors: Dimitar Vlassarev, Andrei Khurshudov
  • Single coil turn data writer
    Patent number: 9697852
    Abstract: A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: July 4, 2017
    Assignee: Seagate Technology LLC
    Inventors: JianHua Xue, Debin Wang, Huaqing Yin, John M. Wolf, Erik J. Hutchinson, Wei Tian, Yonghua Chen
  • Three dimensional data storage media
    Patent number: 9697857
    Abstract: A three dimensional magnetic recording media can consist of a coupling layer disposed between first and second vertically stacked recording layers. The coupling layer can provide exchange or antiferromagnetic coupling and allow the respective recording layers to be individually heat selected to different first and second coupling strengths through application of heat from a heat source.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 4, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David M. Tung, Ganping Ju, Philip L. Steiner, Thomas P. Nolan, Thomas Y. Chang, Pin-Wei Huang, Kaizhong Gao, Timothy Klemmer, David S. Kuo
  • Techniques for reducing memory write operations using coalescing memory buffers and difference information
    Patent number: 9696916
    Abstract: The present disclosure relates to examples of reducing memory write operations using coalescing memory buffers. In one example implementation according to aspects of the present disclosure, a method comprises computing a difference between a current state of data of at least one block of a storage device to which data is to be written and a state that would result from the write operation. The method further comprises populating at least one of one or more coalescing memory buffers with difference information associated with the difference and to be used to update an associated one of the blocks. Additionally, the method comprises selectively writing the difference information in the coalescing memory buffers to the storage devices, based on a determination of fullness of the coalescing memory buffers. The coalescing memory buffers are separate from the storage devices.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: July 4, 2017
    Assignee: Seagate Technology LLC
    Inventor: Radoslav Danilak
  • ESD protection surface charge control recording head
    Patent number: 9691419
    Abstract: Electrostatic discharge protection can be afforded to a data recording head in accordance with various embodiments. A data recording head may consist of a circuit having a preamp ground connected to a ground substrate via a ground trace. The ground trace can consist of a first leg connected to the ground substrate and a second leg with an open connection extending from a dice line.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 27, 2017
    Assignee: Seagate Technology LLC
    Inventors: Daniel W. Olson, John M. Wolf, Declan Macken, Gavin L. Brinkley
  • Magnetoresistive sensor having a synthetic antiferromagnetic bottom shield
    Patent number: 9691417
    Abstract: A reader includes a bearing surface, a sensor stack and a bottom shield below the sensor stack. The bottom shield has a synthetic antiferromagnetic (SAF) structure that includes a first magnetic layer that has a first width at the bearing surface and a second magnetic layer that has a second width at the bearing surface. The second width is less than the first width. The second magnetic layer has a magnetic orientation with at least a component that is substantially orthogonal to the bearing surface.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: June 27, 2017
    Assignee: Seagate Technology LLC
    Inventors: Wonjoon Jung, Victor Sapozhnikov