Patents Assigned to Seagate Technologies
  • ELECTRO-CHEMICALLY MACHINING WITH A MOTOR PART INCLUDING AN ELECTRODE
    Publication number: 20150034494
    Abstract: A method includes rotating a first motor part around a first structure substantially similar to a second motor part. The method also includes applying a first current to the first structure to electro-chemically machine the first motor part.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Timothy Edward Langlais, Chris M. Woldemar, Troy M. Herndon
  • MAGNETORESISTIVE SENSOR SHIELD
    Publication number: 20150036246
    Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for a region of reduced anisotropy within a synthetic antiferromagnetic (SAF) shield. The SAF shield includes first and second layers of ferromagnetic material separated by a coupling spacer layer. A distance between the first and second layers of ferromagnetic material is greater in a region proximal to the sensor stack than in a region away from the sensor stack.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Kevin McNeill, Aiden Goggin, Marcus Ormston, Victor Boris Sapozhnikov
  • Federated Tiering Management
    Publication number: 20150039825
    Abstract: Apparatus and methods are described for dynamically moving data between tiers of mass storage devices responsive to at least some of the mass storage devices providing information identifying which data are candidates to be moved between the tiers.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventor: David Bruce Anderson
  • Using Friction Compensation Modeling to Move a Control Project
    Publication number: 20150039101
    Abstract: Apparatus and method for moving a control object, such as but not limited to a data read/write transducer adjacent a rotatable magnetic recording medium in a data storage system. In accordance with some embodiments, a compensation value is calculated for a baseline friction model which predicts friction in a positioning system. A modified friction model is generated based on the compensation value and the baseline friction model. A control object of the positioning system is moved from an initial position to a final position responsive to a trajectory profile calculated using the modified friction model.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: LingZhi Yang, Ju-il Lee, Arnold Slezak
  • SLIDER CLEANING AND CARRIER TRAY
    Publication number: 20150034526
    Abstract: A tray for retaining sliders, such as during washing and/or transporting process steps. The tray has a planar body comprising a top surface having a plurality of cavities therein, an opposite bottom surface having a plurality of recesses therein, and a perimeter. Each cavity is oppositely aligned with a respective recess, with each cavity and its respective recess connected by a passage through the body.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Glenn Charles Johnson, Binh Dinh Tran, Gary Singer
  • CAPPING METHOD FOR LASER DIODE PROTECTION
    Publication number: 20150036467
    Abstract: An apparatus includes a slider with a cavity in a trailing end of the slider. A laser is positioned in the cavity and has an output facet positioned adjacent to a first wall of the cavity. A cap is connected to the trailing end of the slider and covers the laser.
    Type: Application
    Filed: August 22, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, JR., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao
  • ALIGNMENT OF OPTICAL COMPONENTS
    Publication number: 20150036137
    Abstract: Alignment of a near field transducer (NFT) optical input coupler and a light emitting device involves providing excitation radiation from an excitation light source through an optical input coupler to the NFT and filtering output radiation from the NFT using a short wavelength pass optical filter. The optical input coupler is scanned through multiple positions while the photoluminescent radiation is detected. A first alignment position between the NFT input coupler and the excitation light source is identified based on the detected photoluminescent radiation. A light emitting device is scanned through multiple positions the light output is detected by a detector. A second alignment position between the light emitting device and the detector is identified. The first and second alignment positions are used to align the light emitting device with the optical input coupler.
    Type: Application
    Filed: August 5, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Chubing Peng, Amit Sharma, Kaspar Ko
  • MAGNETORESISTIVE SENSOR
    Publication number: 20150036245
    Abstract: An apparatus disclosed herein comprises a magnetically free layer and a bottom shield, wherein a first portion of the bottom shield substantially adjacent the free layer is pinned perpendicular to an air-bearing surface (ABS) of the apparatus and a second portion of the bottom shield not substantially adjacent the free layer is pinned parallel to the ABS of the apparatus.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Taras Grigoryevich Pokhil, Mohammed Sharia Ullah Patwari
  • LASER OPTICAL POWER MONITORING USING THERMAL SENSOR OF A HEAD TRANSDUCER
    Publication number: 20150036469
    Abstract: A light source is configured to produce light, a waveguide is optically coupled to the light source and configured to direct the light to an intended focus location, and a slider is configured to use the light as an energy source for heating a region of a magnetic recording medium. A thermal sensor is situated on the slider at a location outside of a light path that includes the intended focus location. The thermal sensor is configured for sensing a short time constant change in temperature resulting from light source heating of the thermal sensor, wherein the sensed change in thermal sensor temperature is representative of optical intensity of the light delivered to the intended focus location.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Michael Thomas Johnson, Manuel Charles Anaya-Dufresne, Zoran Jandric
  • Multi-track asymmetric read-back signal correction
    Patent number: 8947801
    Abstract: Various aspects of the present disclosure are directed toward an apparatus, such as a disc drive, including a disc having multiple tracks, a magneto-resistive transducer assembly, and multiple-track signal correction circuitry. The multiple-track signal correction circuitry compensates for asymmetry in a readback signal of read data stored in at least one of multiple tracks based on different correction coefficients for respective ones of the multiple tracks.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventor: Jason Charles Jury
  • Magnetic device with different planarization areas
    Patent number: 8946835
    Abstract: A planarization process may planarize a media disk that has data trenches between data features and larger servo trenches between servo features. A filler material layer is deposited on the media disk and provides step coverage of the trenches. The filler material has data recesses over the data trenches and servo recesses over the servo trenches that must be removed to produce a planar media surface. A first planarization process is used to remove the data recesses and a second planarization process is used to remove the servo recesses.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Yuan Xu, Wei Hu, Justin Jia-Jen Hwu, Gene Gauzner, Koichi Wago, David Shiao-Min Kuo
  • Write pulse with adjustable slew rate
    Patent number: 8947820
    Abstract: The implementations disclosed herein provide for a storage device including a preamplifier that generates a write current pulse having a region of reduced slew rate that temporally correlates with a time when a magnetization of a write pole tip switches polarity.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Kirill Rivkin, Yanzhang Liu, Mourad Benakli, Huaqing Yin
  • Interlayer for device including NFT and cladding layers
    Patent number: 8945731
    Abstract: A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a discontinuous metal layer positioned between the NFT and the at least one cladding layer.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Tong Zhao, Michael Christopher Kautzky, Michael Allen Seigler, Yongjun Zhao, Jay Jayashankar, Xiaoyue Huang
  • Method of forming electrical connections from solder posts
    Patent number: 8947830
    Abstract: A method for forming an electrical interconnection between a slider pad and a suspension pad that is adjacent to and positioned at an angle relative to the slider pad, which includes the steps of forming a solder bump on a first surface of the slider pad, reshaping the solder bump into a protrusion having an ellipsoidal shape that extends from the slider pad and contacts the suspension pad, and applying a laser to the ellipsoidal protrusion to reflow the solder bump while simultaneously applying a downward pressure to the solder bump in order to form a solder fillet between the slider pad and the suspension pad.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Aaron Michael Collins, Scott Matzke, Christopher Unger, Paul Davidson, Daniel Richard Buettner
  • Magnetic sensor with composite magnetic shield
    Patent number: 8945405
    Abstract: A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Vladyslav Alexandrovich Vas'ko, Venkateswara Rao Inturi, Michael C. Kautzky, Zhihong Lu, Mark T. Kief, Yifan Zhang
  • Collection of readback signal modulation data
    Patent number: 8947814
    Abstract: A data storage system having a read channel configured to function in a normal operation mode and a test mode. In the normal operation mode, the read channel is configured to decode a readback signal to obtain data bits. In the test mode, the read channel is configured to extract gain control loop data and/or timing control loop data from the readback signal.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventor: Bruce Douglas Emo
  • Cross-point resistive-based memory architecture
    Patent number: 8949567
    Abstract: A plurality of addressable memory tiles each comprise one or more cross-point arrays. Each array comprises a plurality of non-volatile resistance-change memory cells. A controller is configured to couple to the array and to a host system. The controller is configured to perform receiving, from the host system, one or more data objects each having a size equal to a predetermined logical block size, and storing the one or more data objects in a corresponding integer number of one or more of the memory tiles.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Antoine Khoueir, Jon D. Trantham, Kevin Gomez, Ara Patapoutian
  • Multiple anode ion source
    Patent number: 8946651
    Abstract: An ion source is provided. The ion source comprises a first cylindrical anode and a second cylindrical anode. The first cylindrical anode is concentric with the second cylindrical anode. The ion source further comprises an electron source positioned within the first cylindrical anode or the second cylindrical anode.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Paul Stephen McLeod, Kueir-Weei Chour
  • Method and apparatus for chemical-mechanical polishing
    Patent number: 8947834
    Abstract: In accordance with certain embodiments, a method can be utilized that includes depositing a backfill material layer over a reader stack; depositing a chemical-mechanical-polishing stop layer above the layer of backfill material; and depositing a sacrificial layer on top of the chemical-mechanical-polishing stop layer.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Eric Walter Singleton, Shaun Eric McKinlay, Stacey Christine Wakeham
  • Independently driven write coils
    Patent number: 8947807
    Abstract: A writer assembly having two separately driven write coils allows a combined write field generated by the writer assembly to be fine turned and optimized for a particular application. Two preamplifiers may be incorporated into a printed circuit board in order to separately drive the write coils. In other implementations, there may be more than two write coils and corresponding preamplifiers.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Kevin Richard Heim, Kirill A. Rivkin, Eric Meloche, John Wolf