Patents Assigned to Seagate Technologies
  • TRANSDUCER HEAD WITH MULTIPLE READ SENSORS
    Publication number: 20130314816
    Abstract: In order to improve a consistent data track during writing to a storage medium, a plurality of read sensors are affixed to a transducer head. In one implementation, the transducer head includes multiple read sensors placed up-track of the write pole. In another implementation, the transducer head includes at least one read sensor placed up-track of the write pole and at least one read sensor placed down-track of the write pole. Each position of the multiple read sensors relative to the write pole may be unique. One or more read signals of selected read sensors are used to determine the read location and therefore the write pole location relative to the storage medium.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicant: Seagate Technology LLC
    Inventors: Kaizhong Gao, Olle Heinonen, Yonghua Chen
  • Preventing oil migration to slider fluid bearing surface
    Patent number: 8593763
    Abstract: An apparatus and associated method employing a slider having a leading edge opposing a trailing edge. A fluid bearing surface extends between the leading edge and the trailing edge. The fluid bearing surface contactingly engages a fluid stream operably imparted to the fluid bearing surface by a moving member adjacent thereto. A trailing edge pad extends from the fluid bearing surface adjacent the trailing edge. A capillary lubrication trench (CLT) is disposed entirely between a portion of the trailing edge pad and the trailing edge along a direction that is parallel to a longitudinal axis from the leading edge to the trailing edge.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 26, 2013
    Assignee: Seagate Technology LLC
    Inventors: Karl Harold Scheppers, Kah-Hoe Tan
  • Rapid rebuild of a data set
    Patent number: 8589724
    Abstract: A method and apparatus for rebuilding a data set. In accordance with some embodiments, a data storage device is coupled to a host. An error condition associated with a memory of the data storage device is detected. Data stored in a first portion of the memory unaffected by said error condition is transferred to the host. A communication signal is output to the host that indicates that data stored in a second portion of the memory affected by said error condition will not be transferred to the host. The host reconstructs the data stored in the second portion of the memory responsive to the communication signal.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 19, 2013
    Assignee: Seagate Technology LLC
    Inventors: Mark Allen Gaertner, Tyler Ki Soo Gordon
  • Low profile lubricant with cyclophosphazene ring attached
    Patent number: 8586703
    Abstract: A compound comprising a backbone with a perfluoropolyether chain. The compound also has one or more cyclophosphazene rings attached to or incorporated into the backbone. The compound further includes at least two functional groups attached to the backbone, attached to the one or more cyclophosphazene rings, or a combination thereof.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: November 19, 2013
    Assignee: Seagate Technology LLC
    Inventors: Jiping Yang, Michael Joseph Stirniman, Xiaoding Ma, Jing Gui
  • Optical device including interlayer
    Patent number: 8588036
    Abstract: A device including a waveguide, the waveguide having a first portion where energy having a wavelength, ?, enters and a second portion where the energy exits, the waveguide including a core layer with an index of refraction, n1; at least one cladding layer formed adjacent the core layer, the cladding layer having an index of refraction, n2; a reflective layer, the reflective layer positioned adjacent the first portion of the waveguide; and an interlayer, the interlayer positioned between the first portion of the waveguide and the reflective layer, the interlayer having an index of refraction, n3; wherein n3 is greater than n2.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: November 19, 2013
    Assignee: Seagate Technology LLC
    Inventor: Chubing Peng
  • SURFACE FEATURES MAPPING
    Publication number: 20130301040
    Abstract: Provided herein is an apparatus, including a photon emitting means for emitting photons onto a surface of an article, a photon detecting means for detecting photons scattered from features in the surface of the article; and a mapping means for mapping the features in the surface of the article, wherein the apparatus is configured to process more than one article every 100 seconds.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 14, 2013
    Applicant: Seagate Technology LLC
    Inventors: Joachim W. Ahner, S. Keith McLaurin
  • Magnetic write device with a cladded write assist element
    Patent number: 8582236
    Abstract: A magnetic device includes a write element having a write element tip and a conductor adjacent an edge of the write element tip for carrying current to generate an assist field that augments a write field generated by the write element. A cladding material is disposed on at least one surface of the conductor.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Eric S. Linville, Mark T. Kief
  • Locking media pusher
    Patent number: 8582228
    Abstract: A locking media pusher is coupled to a servo controlled stage and includes a protruding probe and a locking mechanism. The stage moves forward and backward along a base toward and away from a storage medium. If an eccentricity of a track on the storage medium exceeds a threshold, the storage medium is rotated to an orientation where the greatest eccentricity is directed toward the media pusher. The media pusher is moved toward the storage medium until a probe extending from the media pusher contacts the storage medium. The probe is locked within the media pusher. The stage and attached media pusher are retracted from the storage medium and the storage medium is unlocked. The magnitude of retraction of the stage is recorded. The stage is moved toward the storage medium a distance corresponding to the probe contact position plus the eccentricity magnitude to correct the eccentricity.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology
    Inventors: Ronald E. Anderson, James H. McGlennen, Brett R. Herdendorf
  • Magnetic element with reduced shield-to-shield spacing
    Patent number: 8582249
    Abstract: A magnetic element has a magnetically responsive lamination with a ferromagnetic free layer separated from a synthetic antiferromagnetic (SAF) layer by a spacer layer and from a sensed data bit stored in an adjacent medium by an air bearing surface (ABS). The lamination is coupled to at least one antiferromagnetic (AFM) tab a predetermined offset distance from the ABS.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Eric Walter Singleton, Mark William Covington
  • Data storage device, storing medium access method and storing medium thereof
    Patent number: 8583879
    Abstract: A data storage device including a storing medium to shingle write and a controller to access the storing medium so that data is sequentially written on the storing medium using a mapping table based on Logical Block Address (LBA) included in a write command.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology International
    Inventors: Se-wook Na, In Sik Ryu
  • Encoding and decoding to reduce switching of flash memory transistors
    Patent number: 8581754
    Abstract: Methods of encoding data to and decoding data from flash memory devices are provided. User data having an unknown ratio of 1's to 0's is received. The user data is utilized in generating transformed data that has a predictable ratio of 1's to 0's. The transformed data is stored to flash memory. The transformed data is illustratively generate by either applying an “exclusive or” function to the user data or by converting the user data into a number having a greater number of bits.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventor: Todd Ray Strope
  • Magnetic element with varying areal extents
    Patent number: 8580580
    Abstract: An apparatus and associated method for a magnetic element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a free layer that has a first areal extent that is sensitive to a magnetic field and a synthetic antiferromagnetic (SAF) layer adjacent to the free layer and has a second areal extent that is greater than the first areal extent.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Eric Walter Singleton, Kaizhong Gao, Dimitar V. Dimitrov
  • Multi-bit sampling of oscillator jitter for random number generation
    Patent number: 8583712
    Abstract: An apparatus includes an oscillator, a counter for counting pulses, and a latch for latching a count from the counter in response to changes in a logic level of an output of the oscillator. The apparatus can further include an edge detector for producing a latching signal in response to changes in the logic level of the output of the oscillator.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventor: Laszlo Hars
  • Shaped magnetic write pole
    Patent number: 8582234
    Abstract: A magnetic shield is adjacent a write pole. The write pole has a body portion with a body thickness and an extension portion with parallel first and second sides that each tilt towards the magnetic shield at a predetermined angle proximal to an air bearing surface (ABS). The extension portion may be capable of enhancing a write field gradient of the magnetic shield by reducing magnetic saturation.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Eric Linville, Eric Roger Meloche, Jianhua Xue, Huaqing Yin
  • Magnetic element with increased scissoring angle
    Patent number: 8582247
    Abstract: An apparatus and associated method is presently disclosed for a data sensing element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a magnetically responsive lamination that has a spacer layer disposed between a first and second ferromagnetic free layer. The lamination having at least one free layer with a shape feature that increases a scissoring angle between the free layers.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Dian Song, Dimitar V. Dimitrov, Mark W. Covington, Jiexuan He, Scott Stokes, Jason Gadbois
  • Magnetic layer with grain refining agent
    Patent number: 8582252
    Abstract: A magnetic sensor includes a magnetic layer comprising magnetic material and a grain refining agent. The magnetic layer having a grain-refined magnetic layer surface. A layer adjacent the magnetic layer has a layer surface that conforms to the grain-refined magnetic layer surface.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Brian William Karr, Eric Walter Singleton, Qing He
  • Solid-state memory with error correction coding
    Patent number: 8583986
    Abstract: In a particular embodiment, a storage device is disclosed that includes a solid-state storage media. The storage device further includes a read/write circuit including an error correction coding (ECC) encoder/decoder adapted to write data and associated ECC information to the solid-state storage media without performing a read-verify operation.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Stanton MacDonough Keeler, John Edward Moon
  • Selectively magnetic write gap insert
    Patent number: 8582237
    Abstract: A selectively magnetic insert that is capable of enhancing magnetic writing, such as in use as a data transducing head. In accordance with various embodiments, a write pole is in contact with a selectively magnetic insert that decouples the write pole from at least one adjacent shield in response a powered operation.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: James Gary Wessel, Mourad Benakli, Raul Horacio Andruet, Kirill A. Rivkin, Sarbeswar Sahoo
  • Interface
    Patent number: D693349
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: November 12, 2013
    Assignee: Seagate Technology LLC
    Inventors: Michael Gene Morgan, Paul Thomas McParland, Mu-Jung Chen, Ming-Hsueh Tsai
  • Storage device
    Patent number: D694234
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: November 26, 2013
    Assignee: Seagate Technology LLC
    Inventors: Paul Thomas McParland, Ming-Hsueh Tsai