Patents Assigned to Seagate Technology LLC
  • Patent number: 10957350
    Abstract: A head gimbal assembly for supporting a disk drive includes a slider, a load beam, a ring gimbal affixed to the load beam, a plurality of microactuators, and a flexure. The flexure includes a first end extending along the load beam through a center region of a longitudinal axis of the head gimbal assembly and second end that includes a plurality of bond pads electrically coupled to the slider. The flexure includes a plurality of support features. Each support feature of the plurality of support features spans a respective microactuator of the plurality of microactuators. Each support feature includes a support protrusion and a support base. Each support protrusion is coupled to the ring gimbal at a distal side of the respective microactuator and each support base is coupled to the flex circuit on a proximal side of the respective microactuator.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 23, 2021
    Assignee: Seagate Technology LLC
    Inventors: Rohit Deokar, Razman Zambri, Gary Berscheit
  • Publication number: 20210082467
    Abstract: An apparatus with a housing which stores a plurality of data storage magazines, where each data storage magazine includes a plurality of data storage devices. The housing includes a movable carriage, the movable carriage configured to selectively couple a set of data storage devices held by a particular data storage magazine to a host device.
    Type: Application
    Filed: October 13, 2020
    Publication date: March 18, 2021
    Applicant: Seagate Technology LLC
    Inventors: Brett Herdendorf, Riyan Mendonsa, Krishnan Subramanian
  • Patent number: 10950268
    Abstract: A method of forming a patterned media includes constraining growth of magnetic grains in a down-track direction without constraining the growth in a radial direction to cause the magnetic grains to align in rows extending in the radial direction. The patterned media may allow for data track radial width to be defined independent of grain size.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 16, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Thomas Y. Chang, Philip L. Steiner, Xiaomin Yang, Bin Lu
  • Patent number: 10950264
    Abstract: A hard disk drive includes a first actuator and a second actuator. The first actuator is coupled to a first slider, which includes a first read transducer and a first write transducer. Both the first read transducer and the first write transducer are positioned away from a first longitudinal centerline of the first slider. The second actuator is coupled to a second slider, which includes a second read transducer and a second write transducer. Both the second read transducer and the second write transducer are positioned away from a second longitudinal centerline of the second slider.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: March 16, 2021
    Assignee: Seagate Technology LLC
    Inventors: Li Hong Zhang, Xiong Liu
  • Patent number: 10949130
    Abstract: A virtual solid state storage system is provided with solid state storage error emulation. An exemplary apparatus comprises a virtual solid state storage device configured to emulate a solid state storage device. The virtual solid state storage device comprises an interface that communicates with a solid state storage controller; an address translation module that translates memory addresses from a solid state storage-based memory space to a second memory space of a second memory device; and a non-solid state storage memory controller that communicates with the second memory device; and an error module to emulate solid state storage errors for testing error handling functions of the solid state storage controller for predefined error types of the solid state storage memory device by: (i) flipping bits sent to and/or read from the second memory device; and/or (ii) changing a status response sent to the solid state storage controller.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 16, 2021
    Assignee: Seagate Technology LLC
    Inventors: Swapnil Rameshrao Khandare, Deepak Govind Choudhary
  • Patent number: 10947148
    Abstract: An apparatus includes a beam splitter and a plurality of mirrors. The beam splitter is positioned to receive a laser beam from a source and split the received laser beam to a first plurality of split laser beams and a second plurality of split laser beams. The plurality of mirrors is configured to direct the first plurality of split laser beams and further configured to direct the second plurality of split laser beams. The first plurality of split laser beams is directed by the plurality of mirrors is configured to cut a glass substrate. The second plurality of split laser beams is directed by the plurality of mirrors is configured to shape the glass substrate.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: March 16, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Joachim Walter Ahner, David Marcus Tung, Daniel T. Jennings, Robin Davies, Ian J. Beresford
  • Patent number: 10951234
    Abstract: In one implementation, the disclosure provides a system including a detector configured to generate an output of a first log-likelihood ratio for each bit in an input data stream. The system also includes at least one look-up table providing a mapping of the first log-likelihood ratio to a second log-likelihood ratio. The mapping between the first log-likelihood ratio and the second log-likelihood ratio is non-linear. The system also includes a decoder configured to generate an output data stream using the second log-likelihood ratio to generate a value for each bit in the input data stream.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: March 16, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Deepak Sridhara, Rishi Ahuja, William M. Radich, Ara Patapoutian
  • Patent number: 10949110
    Abstract: Apparatus and method for managing metadata in a data storage device, such as a solid-state drive (SSD). In some embodiments, a non-volatile memory (NVM) includes a population of semiconductor memory dies. The dies are connected a number of parallel channels such that less than all of the semiconductor dies are connected to each channel. A controller circuit apportions the semiconductor memory dies into a plurality of die sets, with each die set configured to store user data blocks associated with a different user. The controller circuit subsequently rearranges the dies into a different arrangement of die sets so that at least one die is migrated from a first dies set to a second die set. A map manager circuit is configured to establish an array of pointers in a memory to identify contiguous portions of map metadtata that describe user data stored in the at least one migrated die.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: March 16, 2021
    Assignee: Seagate Technology LLC
    Inventors: Stacey Secatch, David W. Claude, Steven S. Williams, Jeff Rogers
  • Patent number: 10947476
    Abstract: Provided herein is a lubricant comprising a compound of Formula I: wherein R1 and R2 are independent and have the structure selected from —(CF2O)x(CF2CF2O)y(CF2CF2CF2O)z(CF2CF2CF2CF2O)w—, x, y, z and w are selected from an integer from 0 to 30; p, and q are selected from an integer from 0 to 3; A and B are independent and have the structure selected from: —(CH2CH(OH)CH2O)jH, and j is an integer selected from 0 to 3.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: March 16, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Yu Lu, JiPing Yang, Jingyuan Zhuo, Qian Guo, Wen H. Liu
  • Patent number: 10943612
    Abstract: A reader having a sensor stack and a top shield above the sensor stack. The top shield has an upper surface and a lower surface. The reader also includes at least one side shield below the top shield and adjacent to the sensor stack. The reader further includes a decoupling layer between the upper surface of the top shield and the at least one side shield. The decoupling layer is configured to decouple a first portion of the at least one side shield, proximate to the sensor stack, from at least a portion of the top shield.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Victor Sapozhnikov, Taras Grigorievich Pokhil, Mohammed Shariat Ullah Patwari
  • Patent number: 10944424
    Abstract: Systems and methods are disclosed for error correction with multiple log likelihood ratio (LLR) lookup tables (LUTs) for a single read, which allows for adaptation to asymmetry in the number of 0 or 1 bit errors without re-read operations. In certain embodiments, an apparatus may comprise a circuit configured to receive a sequence of bit value estimates for data read from a solid state memory during a single read operation, generate a first sequence of LLR values by applying the sequence of bit value estimates to a first LUT, and perform a decoding operation on the first sequence of LLR values. When the first sequence of LLR values fails to decode, the circuit may be configured to generate a second sequence of LLR values by applying the bit value estimates to a second LUT, and perform the decoding operation on the second sequence of LLR values to generate decoded data.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Zheng Wang, Ara Patapoutian, Deepak Sridhara
  • Patent number: 10942655
    Abstract: Systems and methods presented herein provide for mitigating errors in a storage device. In one embodiment, a storage system includes a storage device comprising a plurality of storage areas operable to store data, and a controller operable to evaluate operating conditions of the storage device, to perform a background scan on a first of the storage areas to characterize a read retention of the first storage area, and to adjust a read signal of the first storage area based on the characterized read retention and the operating conditions of the storage device.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Ludovic Danjean, Abdelhakim Alhussien, Sundararajan Sankaranarayanan, Erich Franz Haratsch
  • Patent number: 10942503
    Abstract: A mobile data storage device (102) may be housed in a mobile computing device (142) without an active cooling feature. The mobile data storage device (102) can have at least a controller (122) configured to delay command execution in response to a predicted mobile data storage device (102) temperature. The controller (122) can insert a plurality of delays into a command queue to prevent the mobile data storage device (102) from reaching the predicted mobile data storage device (102) temperature.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventor: James Edward Dykes
  • Patent number: 10943608
    Abstract: An apparatus comprises a slider configured to facilitate heat assisted magnetic recording. The slider comprises a plurality of bond pads including a first electrical bond pad, a second electrical bond pad, and a ground pad. A laser diode comprises an anode coupled to the first electrical bond pad and a cathode coupled to the second electrical bond pad. The laser diode is operable in a non-lasing state and a lasing state. A heater is coupled between the ground pad and at least one of the anode and cathode of the laser diode. The heater is configured to generate heat for heating the laser diode during the non-lasing state and the lasing state.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventor: James Gary Wessel
  • Patent number: 10942937
    Abstract: Systems and methods for improving data mining systems are described. In one embodiment, the systems and methods may include a storage drive and a hardware controller. In some embodiments, the hardware controller may be configured to detect a first event in the storage system, identify data associated with the first event, parse the data according to a logging protocol, and store the parsed data in a database.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Bhupesh Pant, Christian B. Madsen
  • Patent number: 10942668
    Abstract: Provided herein is a method that includes receiving a signal to erase content stored on a storage device. The method further includes erasing the content stored on the storage device in response to the signal to erase. The method also includes issuing a certificate of erasure, wherein the certificate is unique to the storage device.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: March 9, 2021
    Assignee: Seagate Technology LLC
    Inventors: Mohammad Mohsin Awan, David Michael Seesdorf, Kevin Gautam Sternberg, Saheb Biswas, Anthony Ramon Duran
  • Patent number: 10936350
    Abstract: An application programming interface (API) that enables installation of an application as one or more key-value objects on a data storage drive such as a hard disk drive, a solid state drive or a hybrid drive. The API also enables execution of the application within a controlled environment of the data storage drive.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: March 2, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Chiaming Yang, Jon D. Trantham, Timothy Richard Feldman, Bryan David Wyatt, David B. Anderson, Robert John Warmka
  • Patent number: 10935603
    Abstract: A system includes a host configured to communicate with a device under test. The host is configured to write test data to the device under test. An optimization engine is configured to optimize a plurality of parameters associated with a magnetic recording channel associated with the device under test. The optimization engine is configured to select a first set of parameters for the plurality of parameters and the host is configured to set the magnetic recording channel based on the first set of parameters. The host then measures the performance of the magnetic recording channel based on the first set of parameters. Based on the measured performance, the optimization engine then selects new parameter values for the plurality of parameters. Until the measured performance is within an acceptable threshold, the optimization engine will iteratively update the plurality of parameters based on the measured performance.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 2, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Sayan Ghosal, John Tantzen
  • Patent number: 10936003
    Abstract: Systems and methods are disclosed for phase locking multiple clocks of different frequencies. In certain embodiments, an apparatus may be configured to downsample a first clock having a first frequency and a second clock having a second frequency into downsampled clocks having the same frequency. The apparatus may adjust a frequency of the second clock so that the downsampled clocks are phase aligned. The apparatus may reset counters of the divider circuits that perform the downsampling so align them to a counter for the first clock. A counter for the second clock may also be reset to align with the counter for the first clock. The synchronized clocks may be applied in data storage operations, such as self-servo writing operations, where the first clock may be a read clock and the second clock may be a write clock.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 2, 2021
    Assignee: Seagate Technology LLC
    Inventors: Zheng Wu, Jason Bellorado, Marcus Marrow, Trung Thuc Nguyen, Wing Fai Hui, Kin Ming Chan
  • Patent number: D913213
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 16, 2021
    Assignee: Seagate Technology LLC
    Inventors: Liying Bi, Ming-Hsueh Tsai, Tommo Walter Brickner