Patents Assigned to Seagate Technologies
  • Publication number: 20140265025
    Abstract: The embodiments disclose a method including depositing a resist layer using a mixture of several different length polymer strings materials spanning a range of natural periodicity, and imprinting the mixture of several different length polymer strings using sheared guiding patterns to increase flexibility.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: René van de Veerdonk, XiaoMin Yang, Kim Lee, Justin Hwu
  • Publication number: 20140281185
    Abstract: A data storage system includes data storage and random access memory. A sorting module is communicatively coupled to the random access memory and is configured to sort data blocks of incoming write data received in the random access memory. A storage controller is communicatively coupled to the random access memory and the data storage and is configured to write the sorted data blocks as individually-sorted data block sets to a staging area of the data storage. A method and processor-implemented process provide for sorting data blocks of incoming write data received in a random access memory of data storage and writing the sorted data blocks as individually-sorted data block sets to a staging area of the data storage.
    Type: Application
    Filed: August 22, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Brian Thomas Edgar, Mark A. Gaertner
  • Publication number: 20140268410
    Abstract: A temperature sensor of a head transducer measures temperature near or at the close point. The measured temperature varies in response to changes in spacing between the head transducer and a magnetic recording medium. A detector is coupled to the temperature sensor and is configured to detect a change in a DC component of the measured temperature indicative of onset of contact between the head transducer and the medium. Another head transducer configuration includes a sensor having a sensing element with a high temperature coefficient of resistance to interact with asperities of the medium. Electrically conductive leads are connected to the sensing element and have a low temperature coefficient of resistance relative to that of the sensing element, such thermally induced resistance changes in the leads have a negligible effect on a response of the sensing element to contact with the asperities.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Gary Joseph Kunkel, Huazhou Lou, Declan Macken, Timothy William Stoebe
  • Publication number: 20140272471
    Abstract: In accordance with one embodiment, an apparatus can be configured that includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; and wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, a method of manufacturing such a device may also be utilized.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
  • Publication number: 20140273764
    Abstract: A carrier for a slider row bar for a lapping process. The carrier has a mounting structure comprising a material configured to have a first modulus of at least 1,000,000 Pa at a first period of time and a second modulus of 500 Pa to 500,000 Pa at a second period of time subsequent to the first period. The change from the first modulus to the second modulus is due to an external stimulus on the material.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Marc Perry Ronshaugen, Joel W. Hoehn
  • Publication number: 20140268407
    Abstract: In one implementation, a method and apparatus is provided for determining an active fly height setting for a transducer head from samples collected from a proximity sensor during less than a single revolution of a disc. Implementations of the method and system use adaptive discrete wavelet transform parameters generated from the collected samples to determine an active fly height setting for a transducer head.
    Type: Application
    Filed: October 25, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Antanas Daugela, Jon D. Trantham, Srinivas Tadepalli
  • Publication number: 20140281702
    Abstract: A storage device is described that detects a data error and then notifies a distributed file system, for example, of such error. A data recovery can then be initiated in many ways, one way by the storage device.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventor: Sumanth Jannyavula Venkata
  • Publication number: 20140268419
    Abstract: A multi-stage sensor is situated on the head transducer and configured to interact with a magnetic recording medium. A first sensor stage of the multi-stage sensor has a temperature coefficient of resistance. A second sensor stage of the multi-stage sensor is coupled to the first sensor and has a temperature coefficient of resistance. The first sensor stage is configured to preferentially sense asperities of the media relative to the second sensor stage, and the second sensor stage configured to preferentially sense proximity to, and contact with, a surface of the media relative to the first sensor stage. The first and second sensor stages may be connected in series or in parallel.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Gary Joseph Kunkel, John L. Brand
  • Publication number: 20140269059
    Abstract: Cells of a solid-state, non-volatile memory are assigned to one of a plurality of groups. Each group is defined by expected symbols stored in the cells in view of actual symbols read from the cells. Based on cell counts within the groups, it can be determined that a shift in a reference voltage will reduce a collective bit error rate of the cells. The shift can be applied to data access operations affecting the cells.
    Type: Application
    Filed: May 27, 2014
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Arvind Sridharan, Ara Patapoutian
  • Publication number: 20140281183
    Abstract: A data storage system includes data storage and random access memory. A sorting module is communicatively coupled to the random access memory and is configured to sort data blocks of incoming write data received in the random access memory. A storage controller is communicatively coupled to the random access memory and the data storage and is configured to write the sorted data blocks as individually-sorted data block sets to a staging area of the data storage. A method and processor-implemented process provide for sorting data blocks of incoming write data received in a random access memory of data storage and writing the sorted data blocks as individually-sorted data block sets to a staging area of the data storage.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Brian Thomas Edgar, Mark A. Gaertner
  • Publication number: 20140268416
    Abstract: A recording head comprising a write pole and a coil structure asymmetric with respect to the write pole and configured to generate more magnetic flux on a trailing side of the main pole than the magnetic flux on a front side of the main pole.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Eric Roger Meloche, Chris Rea, Jianhua Xue, Eric Linville, John M. Wolf
  • Publication number: 20140269234
    Abstract: Implementations disclosed and claimed herein provide a write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.
    Type: Application
    Filed: December 30, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
  • Publication number: 20140268426
    Abstract: An arm assembly for a disc drive. The arm assembly has a load arm for supporting a slider and has a lift tab with a ramp-engaging region for parking the load arm when not in use. This ramp-engaging region has an outer surface defined by a first radius and a second radius different than the first radius.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Daniel Hardy, Pow Hing Yong, Liu Xiong, Keefe Russell, Heng Tung Joseph Lau
  • Patent number: 8837069
    Abstract: Methods and apparatuses for managing read or write errors are disclosed. In one embodiment, a method may comprise receiving a command to perform an operation associated with first data and a first address of a data storage medium, performing the operation at the first address, retrying the operation when the operation did not complete successfully, and storing the first data to a second address when a first threshold is exceeded. In another embodiment, an apparatus may comprise a processor configured to: receive a command to perform an operation associated with first data and a first address of a data storage medium, perform the operation at the first address, retry the operation when the operation did not complete successfully, and store the first data to a second address when a first threshold is exceeded.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventor: Jae Ik Song
  • Patent number: 8837090
    Abstract: A head suspension for a disk drive with a load beam having continuous rails and a distal lift tab. A dimple is positioned proximal to the lift tab, either on the load beam or the gimbal, the dimple providing a pitch axis and a roll axis for the slider. The suspension also includes at least one tab member fixed in relation to the load beam, where each of the at least one tab member is aligned with or is distal to the dimple. The at least one tab and a portion of the gimbal define a gimbal limiter that is aligned with or distal to the dimple. The at least one tab member extends either longitudinally or laterally from the load beam at or distal to the dimple.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: Michael Allen Greminger, Razman Zambri, Jackson William Brandts
  • Patent number: 8837073
    Abstract: Approaches described in this disclosure are generally directed to methods and devices for delaying a write turn-on of a memory device. A write control signal from a memory controller to a preamplifier of a storage device is asserted. A warm-up interval of write drivers of the preamplifier is initiated, the warm-up interval having a duration of predetermined length. Data is transmitted to the write drivers during the warm-up interval.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: Dale Thomas Riley, Matthew Ian Robinson
  • Patent number: 8837076
    Abstract: Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: CheeWee Cheng, Subhash Guddati, ShengYuan Lin, Andy Chou, SweeChuan Samuel Gan, Stefan Ionescu, Scott Ryun, Richard Martin, Jesse Speckhard
  • Patent number: 8837067
    Abstract: Methods and apparatuses for contiguous data address management are provided. In one embodiment, an apparatus may comprise a processor configured to receive a write command including data to be written to a plurality of logical block addresses (LBAs); determine if the plurality of LBAs includes LBAs from a plurality of logical bands; and when the plurality of LBAs includes LBAs from a plurality of logical bands, combine the plurality of logical bands into a single logical band and write the data to the single logical band. In another embodiment, the processor may be further configured to separate the single logical band into the plurality of logical bands when the data written to the plurality of LBAs becomes invalid.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventor: Jae Ik Song
  • Patent number: 8837092
    Abstract: An apparatus can be generally directed to a magnetic stack having a magnetically free layer positioned on an air bearing surface (ABS). The magnetically free layer can be biased to a predetermined magnetization in various embodiments by a biasing structure that is coupled with the magnetically free layer and positioned distal the ABS.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: Mark William Covington, Dimitar Velikov Dimitrov, Dian Song
  • Patent number: 8837075
    Abstract: A head assembly including one or more transducer elements for controlling head-media spacing is disclosed. The assembly includes detection circuitry configured to receive an input detection signal responsive to the spacing between the head and the data storage media and provide an output measure indicative of the head-media spacing. The output signal is utilized by control circuitry to provide a control input to one of a plurality of transducer elements on the head to protrude a localized portion of the head to adjust head-media spacing.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: September 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: Jorge Vicente Hanchi, Dian Song, John Stuart Wright, Andrew D. White