Patents Assigned to Seagate Technology
  • Adaptive read retry optimization
    Patent number: 11139833
    Abstract: Systems, devices, and methods are presented that allow a data channel to adaptively vary a change in a reference voltage used to read data from a solid state memory. The change in the reference voltage may be determined based on a measured error statistic of the solid state memory. A hard decision low density parity check (HLDPC) decoder may be utilized in conjunction with a soft decision low density parity check (SLDPC).
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: October 5, 2021
    Assignee: Seagate Technology LLC
    Inventors: Seongwook Jeong, AbdelHakim Alhussien, Erich Franz Haratsch
  • Processing map metadata updates to reduce client I/O variability and device time to ready (TTR)
    Patent number: 11132140
    Abstract: Method and apparatus for enhancing performance of a storage device, such as a solid-state drive (SSD). A non-volatile memory (NVM) stores user data from a client device. Map metadata in a local memory describes locations of the user data in the NVM. The map metadata is arranged as a snapshot and accumulated journal updates. A metadata manager circuit combines a first portion of the journal updates with the existing snapshot to generate a new snapshot, and places a second portion of the journal updates into a read-only journal table in accordance with a selected metadata journaling strategy. A controller uses the updated snapshot and the table to service subsequently received client commands. Only dirty entries are processed and are written at the slowest acceptable rate, thereby improving client I/O performance during normal operation and time to ready (TTR) performance of the device during initialization.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: September 28, 2021
    Assignee: Seagate Technology, LLC
    Inventors: Daniel John Benjamin, Ryan James Goss
  • Multi-sensor edge computing system
    Patent number: 11132893
    Abstract: A multi-sensor edge computing system can have at least a sensor assembly connected to an edge computing device and a downstream host. The sensor assembly may have a first sensor and a second sensor with the respective sensors being different. The edge computing device can be configured to identify a false reading of the first sensor in response to data captured by the second sensor.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: September 28, 2021
    Assignee: Seagate Technology, LLC
    Inventors: Abbas Chokor, Sonia Marrero, Jonathan P. Jones, E. Hans Geittmann, Gregory Christopher Labbe, Richard E. Rupp
  • Data network with container virtualization
    Patent number: 11132324
    Abstract: A first data storage device and a second data storage device can be connected to a first remote host and a second remote host via a server as part of a distributed data network. The server may assign the first data storage device to administer a first virtualization for a first logical volume of the first remote host. A device controller of the data storage device can execute an operating system and then load at least one operating component in the first remote host as directed by the first device controller. The device controller can subsequently perform a first software application in the first remote host as part of the first virtualization.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: September 28, 2021
    Assignee: Seagate Technology, LLC
    Inventor: Thomas R. Prohofsky
  • Cooling station with integrated isolation valves
    Patent number: 11127606
    Abstract: An apparatus comprises a chamber configured to receive a medium. The chamber comprises a first cooled structure having a first surface and a second cooled structure having a first surface. The first surface of the first cooled structure faces the first surface of the second cooled structure and is positioned a predetermined distance therefrom to form a gap, and the gap is configured to receive the medium. The chamber further includes a first gas inlet positioned proximate the center of the first cooled structure, a first slidable structure configured to seal a first side of the chamber when in a closed position, and a second slidable structure, positioned opposite the first slidable structure, and configured to seal a second side of the chamber when in a closed position.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: September 21, 2021
    Assignee: Seagate Technology LLC
    Inventor: Samuel Lewis Tanaka
  • Devices including at least one adhesion layer and methods of forming adhesion layers
    Patent number: 11127423
    Abstract: Devices that include a near field transducer (NFT), the NFT having at least one external surface; and at least one adhesion layer positioned on at least a portion of the at least one external surface, the adhesion layer including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: September 21, 2021
    Assignee: Seagate Technology LLC
    Inventors: Xiaoyue Huang, Michael C. Kautzky
  • Write current switching using an effective size of a media thermal spot produced by a heat-assisted magnetic storage device
    Patent number: 11127418
    Abstract: A heat-assisted magnetic recording device includes a write pole positionable adjacent a magnetic recording medium and configured to write data to the medium. A near-field transducer is situated proximate the write pole and configured to produce a thermal spot on the medium. A channel circuit is configured to generate a sequence of symbols having a length of nT, where T is a channel clock rate and n is an integer over a predetermined range. A write driver is configured to apply bi-directional write currents to the write pole to record the sequence of symbols at a location of the thermal spot on the medium, wherein a duration of applying the write currents to the write pole by the write driver is dependent on a length of the sequence of symbols and the effective thermal spot size.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: September 21, 2021
    Assignee: Seagate Technology LLC
    Inventors: Xiong Liu, Quan Li
  • Thermal spot-dependent write method and apparatus for a heat-assisted magnetic storage device
    Patent number: 11127419
    Abstract: An apparatus comprises a write pole for writing data to a magnetic recording medium and a near-field transducer (NFT) optically coupled to a laser source and configured to produce a thermal spot on the medium. A laser driver applies laser operation power (Iop) to the laser source. A channel circuit generates symbols having a length of nT, where T is a channel clock rate and n is an integer. The laser driver applies Iop to the laser source and a write driver applies bi-directional write currents to the write pole to record the symbols at a location of the thermal spot on the medium, wherein a duration of applying Iop to the laser source by the laser driver is dependent on a length of the symbols and the effective thermal spot size.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: September 21, 2021
    Assignee: Seagate Technology LLC
    Inventors: Xiong Liu, Quan Li
  • Apparatus for coating a lapping plate platen, and related methods of using
    Patent number: 11123758
    Abstract: The present disclosure involves apparatuses and methods for coating a lapping plate with an aqueous composition. The apparatus can be configured and the aqueous composition can be formulated so that the aqueous composition can flow to a spray nozzle device solely due to gravity in a batchwise manner.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: September 21, 2021
    Assignee: Seagate Technology LLC
    Inventors: Nicholas Blum, Andrew Habermas, Ricky Anderson, Mihaela Ruxandra Baurceanu
  • Modifying seek operations mid-seek
    Patent number: 11120825
    Abstract: Illustrative systems and methods disclosed herein may change or modify a seek during mid-seek for various reasons and may set seek speeds for various seeks to less than the maximum possible seek speed to, for example, facilitate seek target change or modifications mid-seek. For instance, the seek speeds for lower priority commands or commands at risk for deprioritization may be set to speeds less than the maximum possible seek speed.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Raye A. Sosseh, Brian Thomas Edgar, Josiah Natan Wernow, Paul Michael Wiggins
  • Multiplying data storage device read throughput
    Patent number: 11119937
    Abstract: A data storage system includes a logical space having logical block addresses (LBAs) divided into non-overlapping LBA ranges, and a physical space having pairs of physical bands. The system also includes a map in which first successive alternate LBAs of each different one of the non-overlapping LBA ranges are mapped to successive adjacent physical blocks of a first physical band of each different pair of the pairs of physical bands, and second successive alternate LBAs of each different one of the non-overlapping LBA ranges are mapped to successive adjacent physical blocks of a second physical band of each different pair of the pairs of physical bands. A controller employs the map to concurrently read data from a first physical block of the first physical band of one pair of physical bands and from a first physical block of the second physical band of the same pair of physical bands.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Xiong Liu, Li Hong Zhang
  • Systems and methods for unlocking self-encrypting data storage devices
    Patent number: 11120151
    Abstract: Security of computers, data storage devices, and servers can be improved with a multiple key access system. In some embodiments, a local key management device can be a locally (or virtually) located data storage device such as a HDD or SDD. The key management device may be part of a computer or server system and can have a first secure area protected by a cryptographic module (e.g. hardware integrated circuit). The first secure area can store a key to access a second secure area, which may function as a local key management server (LKMS) and store access information to securely communicate with and unlock another data storage device coupled to the computer. For example, the LKMS may store an access key to provide the computer with access to another data storage device. Communications between the LKMS and the other data storage device may be encrypted using a communication key.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventor: Christopher Nicholas Allo
  • Delta information volumes to enable chained replication of data by uploading snapshots of data to cloud
    Patent number: 11119862
    Abstract: Method and apparatus for managing data in a distributed data storage system, such as but not limited to a cloud computing environment. In some embodiments, snapshots of a data set are uploaded from a source storage subsystem to a cloud store, along with intervening difference information volumes (DIVs). The DIVs are data structures that identify a set of updated data blocks that have been changed by the source storage subsystem between each successive pair of the snapshots. A reader subsystem requests and uses the latest DIV to request the latest set of changed data blocks from the cloud store, and uses the latest set of changed data blocks to update a previous snapshot to generate a copy of the most recent snapshot. The source and reader subsystems can comprise Internet of Things (IoT) devices, client devices, edge computing devices, etc. from different vendors and which utilize different protocols.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Douglas William Dewey, Ian Robert Davies, Kenneth F. Day, III
  • Bolometric sensor for a heat-assisted magnetic recording device
    Patent number: 11120824
    Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording comprising an air bearing surface (ABS). The slider comprises a write pole at or near the ABS, and a near-field transducer (NFT) at or near the ABS and proximate the write pole. A main waveguide is configured to receive light from a laser source and communicate the light to the NFT. An optical power sensor comprises a tap waveguide optically coupled to the main waveguide and comprising a first end and an opposing second end. The optical power sensor also comprises a bolometer optically coupled to the tap waveguide and configured to receive a portion of the light extracted from the main waveguide by the tap waveguide.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Vivek Krishnamurthy, Nils Jan Gokemeijer
  • Recording head with transfer-printed laser diode unit formed of non-self-supporting layers
    Patent number: 11120830
    Abstract: A recording head includes a substrate, a read transducer, a waveguide core, and a near-field transducer at an end of the waveguide core proximate a media-facing surface. The recording head includes a magnetic write pole and coil. A laser diode unit with one or more non-self-supporting layers of crystalline material region is transfer printed between layers of the recording head.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Aidan Dominic Goggin, Mark Anthony Gubbins, Paula Frances McElhinney, Roger L. Hipwell, Jr., John Wolf
  • Method and apparatus to perform a function level reset in a memory controller
    Patent number: 11119691
    Abstract: Systems and methods are disclosed to perform a function level reset in a memory controller, in accordance with certain embodiments of the present disclosure. In some embodiments, an apparatus may comprise a storage controller circuit configured to receive a function reset indicator from a host device, the function reset indicator identifying a selected storage controller function executing at a storage controller of the apparatus. The circuit may abort each command associated with the selected function and pending at the apparatus based on the function reset indicator, verify that no commands associated with the selected function remain pending at the apparatus, and clear registers associated with the selected function based on the determination that no commands associated with the selected function remain.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Shashank Nemawarkar, Balakrishnan Sundararaman, Chris Randall Stone, Charles Edward Peet, Allen Vestal, Siddharth Krishna Kumar
  • Electrical connector with flexible circuit and stiffener
    Patent number: 11121489
    Abstract: An electrical connector includes a flexible circuit with a flexible material and traces at least partially embedded in the flexible material. The electrical connector further includes a first set of conductive bumps, a second set of conductive bumps, and a stiffener. The first set of conductive bumps is coupled to respective first end portions of the traces and extends from a first side of the flexible circuit. The second set of conductive bumps is coupled to respective second end portions of the traces. The stiffener is coupled to the flexible circuit on a second side of the flexible circuit opposite the first side.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Peng Peng, William A. Casey, Dennis L. Buster, Kerry J. Johnson, Ruth LeMon, Ronald E. Anderson
  • Digital storage system that includes sensor and circuit to determine contact and/or distance between read/write head and data storage medium
    Patent number: 11120826
    Abstract: The present disclosure includes systems and methods for using a comparator-based, relaxation oscillator circuit to detect capacitance of a capacitor formed between a metallic feature in a read/write head and a metallic feature in a storage medium.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: September 14, 2021
    Assignee: Seagate Technology LLC
    Inventors: Michael Thomas Johnson, Peng Peng, Declan Macken
  • Magnetic devices with overcoat that includes a titanium oxynitride layer
    Patent number: 11114122
    Abstract: Described are magnetic recording heads that include an overcoat that includes a titanium oxynitride (TiON) layer.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 7, 2021
    Assignee: Seagate Technology LLC
    Inventors: Zhuoyuan Wu, Edwin F. Rejda, Richard T. Greenlee
  • Plural heat-sink layers for an On-Wafer Laser of a heat-assisted magnetic recording device
    Patent number: 11114120
    Abstract: An apparatus includes a substrate and a reader deposited on the substrate. A laser is formed on a non-self supporting structure and bonded to the substrate. A plurality of heat sink layers are deposited between the reader and the laser and configured to provide thermal coupling between the substrate and the laser and sink heat away from the laser. A waveguide is deposited proximate the laser. The waveguide is configured to communicate light from the laser to a near-field transducer that directs energy resulting from plasmonic excitation to a recording medium.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: September 7, 2021
    Assignee: Seagate Technology LLC
    Inventors: Helene Parwana Habibi, Daniela Diamare, Thomas Liam White, Gavin Lee Brinkley