Patents Assigned to Seagate Technologies
  • Retaining slide-in ramp for hard disk drive
    Patent number: 9536552
    Abstract: Examples of slide-in ramps for hard-disk drives are disclosed. In one example according to aspects of the present disclosure, a slide-in ramp includes: a ramp body, a head load/unload section connected to the ramp body, and a slot defined in the ramp body. The slot includes a first portion and a second portion. A first upper surface of the ramp body surrounds the first portion of the slot at a top side of the ramp body, and a second upper surface of the ramp body surrounds the second portion of the slot at the top side of the ramp body. The second upper surface is non-coplanar with the first upper surface according to various examples.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 3, 2017
    Assignee: Seagate Technology LLC
    Inventors: Jian J. Chen, Pow Hing Yong, Siew Ming Ng, Niroot Jierapipatanakul
  • Random number generation using pulsed programming parameters
    Patent number: 9529570
    Abstract: Apparatus and method for generating random numbers. In accordance with some embodiments, the apparatus comprises a random number generator circuit that generates a random number responsive to a total number of programming pulses used to transition a solid-state memory cell from a first programming state to a second programming state.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: December 27, 2016
    Assignee: Seagate Technology LLC
    Inventors: William Erik Anderson, Monty Aaron Forehand
  • Storage device with adaptive voltage generation system
    Patent number: 9530438
    Abstract: Apparatus and method for generating supply voltages in a data storage device. In some embodiments, the apparatus includes a data transducer adjacent a rotatable magnetic recording medium, the data transducer having a write coil and an electromagnetic source for thermally assisted recording by the write coil. A preamplifier/driver circuit (preamp) has a write driver adapted to supply write currents to the write coil and a source driver adapted to supply source voltage to the electromagnetic source. A voltage regulation circuit applies a first positive supply voltage to the write driver and a different, second positive supply voltage to the source driver.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: December 27, 2016
    Assignee: Seagate Technology LLC
    Inventors: Jon D. Trantham, Todd M. Lammers
  • Disc separator plate with mounting pads
    Patent number: 9530449
    Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus including a base deck, a plurality of storage mediums, and a plurality of disc separator plates. Each disc separator plate includes one or more mounting pad surfaces, at least one of the surfaces having a protrusion. The disc separator plates are coupled to one another and the base deck via the mounting pads, with the disc separator plates in a stacked arrangement. The protrusion or protrusions facilitate alignment of the plurality of disc separator plates in the stacked arrangement, and mitigate contact between the storage mediums and the disc separator plates.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: December 27, 2016
    Assignee: Seagate Technology LLC
    Inventors: Stanislaw A. Dobosz, Jackson W. Nichols
  • Adaptive HAMR power data storage device
    Patent number: 9530447
    Abstract: A data storage device may be configured with at least a heat assisted magnetic recording head that has a laser and is connected to a controller. The heat assisted magnetic recording head can be positioned proximal first and second data bits stored on an adjacent data storage medium. A first laser power may be applied by the laser in response to the first data bit being a different magnetic polarity than the second data bit and a different second laser power can be applied by the laser in response to the first and second data bits having a common magnetic polarity.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: December 27, 2016
    Assignee: Seagate Technology LLC
    Inventors: Kaizhong Gao, Wenzhong Zhu, Edward Gage, James Mcglennen, Jon Trantham
  • CONTROLLER, DATA STORAGE DEVICE, AND DATA COMMUNICATION SYSTEM HAVING VARIABLE COMMUNICATION SPEED
    Publication number: 20160371018
    Abstract: Apparatuses having variable communication speeds are disclose. In one example, an apparatus may comprise a controller configured to: receive a signal from a host, the signal being compatible with a data communication protocol at a first data communication speed; selectively implement a first data communication protocol from a plurality of data communication protocols to communicate with a first memory or implement a second data communication protocol from the plurality of data communication protocols to communicate with a second memory based on the data communication speed; store data in the first memory via the first data communication protocol when the data communication speed is a first speed; and store data in the second memory via the second data communication protocol when the data communication speed is a second speed that is different than the first speed.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 22, 2016
    Applicant: Seagate Technology LLC
    Inventors: Keun HEO, Byung Wook KIM, Young Min KU
  • Variable redundancy in a solid state drive
    Patent number: 9524113
    Abstract: An apparatus comprising a memory and a controller. The memory may be configured to process a plurality of read/write operations. The memory comprises a plurality of memory modules each having a size less than a total size of the memory. The controller is configured to provide a first redundancy scheme when user data occupies less than a preconfigured limit and a second redundancy scheme that protects less than all of the user data when the user data occupies greater than the preconfigured limit.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: December 20, 2016
    Assignee: Seagate Technology LLC
    Inventor: Leonid Baryudin
  • Drive motor with limiter with increased stiffness
    Patent number: 9524745
    Abstract: A device including a first axial portion, a second axial portion, and a radial portion is disclosed. A portion of the second axial portion is configured to connect to a hub. An upper surface of the second axial portion may be positioned above an upper surface of a sleeve limiter shoulder when the portion of the second axial portion is connected to the hub. The radial portion connects the first axial portion to the second axial portion. The radial portion is configured to increase stiffness by increasing surface contact between the radial portion and the sleeve limiter shoulder.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 20, 2016
    Assignee: Seagate Technology LLC
    Inventors: Lynn Bich-Quy Le, Hans Leuthold, Chris M. Woldemar
  • Shielding and electrical contact design for devices with two or more read elements
    Patent number: 9524737
    Abstract: A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: December 20, 2016
    Assignee: Seagate Technology LLC
    Inventor: Steven A. Mastain
  • Multiple layer FePt structure
    Patent number: 9520151
    Abstract: A method involves depositing a seed layer comprising at least A1 phase FePt. A main layer of A1 phase FePt is deposited over the seed layer. The main layer includes FePt of a different stoichiometry than the seed layer. The seed and main layers are annealed to convert the A1 phase FePt to L10 phase FePt. The annealing involves heating the substrate prior to depositing at least part of the A1 phase FePt of the main or seed layers.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 13, 2016
    Assignee: Seagate Technology LLC
    Inventors: Jiaoming Qui, Yonghua Chen, Ganping Ju, Thomas P. Nolan
  • Apparatus with disc separator plates
    Patent number: 9520153
    Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus including a base deck, a plurality of storage mediums (e.g., discs) and a plurality of disc separator plates. The base deck includes a sidewall forming a cavity to house the storage medium, with slots in the sidewall in which each disc separator plate extends. The disc separator plates extend into spaces between peripheral ends of adjacent ones of the storage medium. This arrangement can be used to provide rigid coupling of the separator plates, which can mitigate issues relating to vibration or shock. Further, air flow can be mitigated in this regard, such as to reduce effects upon a magnetoresistive transducer that reads data from the storage mediums.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: December 13, 2016
    Assignee: Seagate Technology LLC
    Inventors: David A. Olivero, Stephen Robert Martin
  • Bearing apparatus with surface migration channels
    Patent number: 9518606
    Abstract: Aspects of the present disclosure are directed to bearings, their manufacture and implementation. As may be implemented in accordance with one or more embodiments, an apparatus includes a bearing cage with a plurality of ball pockets at respective locations along a length of the bearing cage. Each ball pocket holds a ball. A plurality of lubricant reservoirs are respectively located between adjacent ones of the ball pockets along the length of the bearing cage. A plurality of lubricant migration channels are recessed in the bearing cage, extend between and connect one of the lubricant reservoirs and one of the ball pockets, and flow lubricant between the one of the lubricant reservoirs and the one of the ball pockets.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: December 13, 2016
    Assignee: Seagate Technology LLC
    Inventors: Zheng Shi, Jeffrey Robert Lind, Glenn A. Benson
  • Priori information based post-processing in low-density parity-check code decoders
    Patent number: 9513989
    Abstract: A low-density parity-check decoder utilizes information about hard errors in a storage medium to identify bit locations to flip log-likelihood ratios while attempting to decode codewords. The decoder iteratively flips and saturates log-likelihood ratios for bits at hard error locations and re-decodes until a valid codeword is produced. The decoder also identifies variable nodes associated with trapping sets for iterative log-likelihood ratio bit flipping.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: December 6, 2016
    Assignee: Seagate Technology LLC
    Inventors: Zhengang Chen, Abdel-Hakim S. Alhussien, Erich F. Haratsch
  • Data storage component test deck system
    Patent number: 9514781
    Abstract: A system may utilize at least an enclosed test deck that has an access port door covering an access port. The system can test a data storage component by presenting the enclosed test deck to an exchange assembly before exposing an interior test region of the test deck by engaging the access port door with a tool of the exchange assembly. At least one data storage component may be installed into the interior test region and subsequently the access port is closed by installing the access port door into the access port.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: December 6, 2016
    Assignee: Seagate Technology LLC
    Inventors: Ronald Eldon Anderson, Brett Robert Herdendorf, Michael Louis Rancour
  • Methods and systems for reducing decoder error floor for an electronic non-volatile computer storage apparatus
    Patent number: 9513982
    Abstract: An electronic non-volatile computer storage apparatus and methods for reducing decoder error floor for such a storage apparatus are disclosed. An analysis process it utilized to study one or more performance metrics of a decoder of the storage apparatus in order to determine various endurance points throughout the lifetime of that particular type of storage apparatus. Theses endurance points indicate when different scaling factors should be applied and/or when log-likelihood ratio should be re-measured to accommodate physical degradations over time.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: December 6, 2016
    Assignee: Seagate Technology LLC
    Inventors: Yunxiang Wu, Ivana Djurdjevic, Yu Cai, Earl Cohen, Erich F. Haratsch
  • Reducing effect of frequency acquisition error in a position error signal responsive to split servo burst patterns
    Patent number: 9514775
    Abstract: In a servo control loop, servo burst signals that are read from a plurality of servo burst patterns that include a split servo burst pattern contain frequency acquisition error. The frequency acquisition error is at least partially removed to generate a frequency acquisition error compensated position error signal (PES).
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: December 6, 2016
    Assignee: Seagate Technology LLC
    Inventors: Richard Lyle Keizer, Mustafa Can Ozturk, Puskal Prasad Pokharel
  • Surface features by azimuthal angle
    Patent number: 9513215
    Abstract: Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article at a number of azimuthal angles; and a processing element configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: December 6, 2016
    Assignee: Seagate Technology LLC
    Inventors: David M. Tung, Joachim W. Ahner
  • Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods
    Patent number: 9508382
    Abstract: A method and apparatus for performing a read/write process on a recording medium having a defect, the method including determining an area of a recording medium, in which a defect, greater than a first set threshold, occurring in units of tracks, to be a massive defective area; adjusting a first parameter representing a logical track length, based on a size of a defect occurring in each track included in the massive defective area; and performing the read/write process on the recording medium by using the adjusted first parameter.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 29, 2016
    Assignee: Seagate Technology LLC
    Inventor: Walter Jun
  • Command execution using existing address information
    Patent number: 9507710
    Abstract: Method and apparatus for managing data in a memory, such as a flash memory. In accordance with some embodiments, a memory module has a plurality of solid-state non-volatile memory cells. A controller communicates a first command having address information and a first operation code. The first operation code identifies a first action to be taken by the memory module in relation to the address information. The controller subsequently communicates a second command having a second operation code without corresponding address information. The memory module takes a second action identified by the second command using the address information from the first command.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: November 29, 2016
    Assignee: Seagate Technology LLC
    Inventors: Kris Conklin, Bruce Dunlop, Mark Allen Gaertner, Ryan James Goss
  • File management system for devices containing solid-state media
    Patent number: 9507538
    Abstract: A device comprising a file management system that includes a plurality of first entries and second entries. The first entries are configured function as a logical block address mapping table for data searching operations on data files stored in data blocks of the device, and the second entries are configured to organize the plurality of data blocks into separate logical groups.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: November 29, 2016
    Assignee: Seagate Technology LLC
    Inventors: Stanton M. Keeler, Steven S. Williams