Patents Assigned to Seagate Technologies LLC
  • Patterned media for heat assisted recording
    Patent number: 9792946
    Abstract: A patterned magnetic recording medium for use in heat assisted magnetic recording comprises an electrically conductive heat sink layer and a plurality of discrete magnetic recording elements positioned adjacent to a first surface of the heat sink layer. Disc drives that include the patterned medium and a method of magnetic recording using the patterned media are also included.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Ibrahim Kursat Sendur, William Albert Challener, Chubing Peng
  • 3D optical memory storage cells
    Patent number: 9792945
    Abstract: An apparatus includes a first storage cell with an electrical property. The first storage cell is configured to change the electrical property in response to a first light energy, and to maintain the change to the electrical property. The first storage cell is also configured to alter the change to the electrical property in response to a second light energy, and to maintain the alteration to the change to the electrical property. A second storage cell disposed over the first storage cell in a vertical plane of the first storage cell. A third storage cell disposed adjacent to the first storage cell in a horizontal plane of the first storage cell.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Ahner, David Marcus Tung
  • Magnetic devices with variable overcoats
    Patent number: 9792935
    Abstract: A magnetic device including: a magnetic reader; a magnetic writer; and a variable overcoat, the variable overcoat positioned over at least the magnetic reader and writer, the variable overcoat having an overcoat layer, the overcoat layer having a substantially constant thickness and material; and at least one disparate overcoat portion, the disparate overcoat portion having a different thickness, a different material, or both, than the overcoat layer.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 17, 2017
    Assignee: Seagate Technology LLC
    Inventors: Edwin Frank Rejda, Joseph Michael Stephan, The Ngoc Nguyen, Neil Zuckerman, Gary J. Kunkel, Douglas H. Cole, Michael A. Seigler, Chris Rea
  • Active test and alteration of sample times for a ring based random number generator
    Patent number: 9785409
    Abstract: An apparatus can include at least one test circuit configured to determine if bits sampled at a sample frequency from at least one bit generator are random, and a circuit configured to adjust the sample frequency if the at least one test circuit determines that the sampled bits are not random. The apparatus can be a random number generator. A method may include sampling bits at a first sample frequency, and sampling bits at a second sample frequency if the sampled bits associated with the first sample frequency are not random.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 10, 2017
    Assignee: Seagate Technology LLC
    Inventors: Donald Preston Matthews, Jr., Laszlo Hars
  • Apparatus for uniformly irradiating and imaging an article
    Patent number: 9784688
    Abstract: Provided herein is an apparatus, including a reflective surface configured to reflect photons onto a surface of an article, a stage configured to support the article, and an assembly. The assembly is configured to radiate photons through the article to the reflective surface. The assembly is further configured to image the article with irradiance of the photons.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: October 10, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, David M. Tung, Samuel Kah Hean Wong, Henry Luis Lott, Stephen Keith McLaurin, Maissarath Nassirou, Florin Zavaliche
  • Prefetch command optimization for tiered storage systems
    Publication number: 20170286305
    Abstract: A system is provided. The system includes a storage controller configured to receive a prefetch command from a host interface. The storage controller includes a read cache memory that stores prefetch data in response to the prefetch command and a plurality of storage tiers coupled to the storage controller and providing the prefetch data. The plurality of storage tiers includes a fastest storage tier that stores the prefetch data if the read cache memory discards the prefetch data after storing the prefetch data.
    Type: Application
    Filed: April 1, 2016
    Publication date: October 5, 2017
    Applicant: Seagate Technology LLC
    Inventor: George Alexander Kalwitz
  • Slider level lapping carrier
    Patent number: 9776299
    Abstract: A carrier may be configured and operated to engage a lapping plate with a plurality of physically separated sliders attached to a common adhesive of the carrier. The carrier can be constructed to have at least one finger adjacent to and capable of translating a single slider of the plurality of physically separated sliders.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: October 3, 2017
    Assignee: Seagate Technology LLC
    Inventor: Mark Allen Herendeen
  • Contact induced data storage device destruction
    Patent number: 9779773
    Abstract: A data storage device may be destroyed by suspending a transducing head above a data storage medium prior to inducing contact of the transducing head with a first layer of the data storage medium in response to a signal from a controller. Deflection of the transducing head can then be increased to penetrate to a destroy depth in a second layer of the data storage medium that is maintained while the data storage medium spins. The controller may then issue at least one data read command to access data from the data storage medium and when a data read error is received, the data storage medium and transducing head can be verified as destroyed and incapable of accessing data previously written to the data storage medium.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: October 3, 2017
    Assignee: Seagate Technology LLC
    Inventor: Timothy J. Courtney
  • 3DMR media with multiple write field levels
    Patent number: 9779770
    Abstract: A three-dimensional magnetic recording media can consist of a single recording layer configured with three or more separate magnetization levels. A first magnetization level can be written to a selected region of said recording layer by applying a first write field to the grains of said region to form a “spin-up” magnetization in the grains of said region. A second magnetization level can be written by applying a second opposite write field to selected grains of said region to form a “spin-down” magnetization. At least a third intermediate magnetization level can be written by applying a weaker or alternating write field to grains of said region to form an intermediate magnetization comprising a mixture of spin-up and spin-down grains. By such method, said region may comprise a data bit capable of storing 3 or more units of information corresponding to the number of separate magnetization levels employed.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: October 3, 2017
    Assignee: Seagate Technology LLC
    Inventors: Thomas P. Nolan, Bruce Buch, Philip L. Steiner
  • Write signal adjustment
    Patent number: 9779763
    Abstract: A write signal may be adjusted, or modified, based on one or more read signals acquired, or read from, one or more portions proximate a target portion on a storage medium where the write signal is to be applied. The one or more read signals may be read from the storage medium in response to receiving a write data unit such that the read signals may not need to be buffered or later clock synchronized to the write signal.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 3, 2017
    Assignee: Seagate Technology LLC
    Inventor: Todd M. Lammers
  • Battery assisted power
    Patent number: 9780601
    Abstract: An apparatus includes a rechargeable battery, a circuitry, and a controller. The circuitry is operable to receive power from a power source and to provide power to the rechargeable battery and to other electrical components of the apparatus. The controller is configured to monitor power requirements of the apparatus. Moreover, the controller is further configured to provide power from the rechargeable battery in addition to power supplied from the power source during a peak power event of the apparatus.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: October 3, 2017
    Assignee: Seagate Technology LLC
    Inventors: Felix Markhovsky, Ashutosh Razdan, Philip Yin
  • Updating map structures in an object storage system
    Patent number: 9773012
    Abstract: Apparatus and method for updating map structures in an object storage system. A server communicates with users of an object storage system over a network. A plurality of data storage devices are arranged into locations to store and retrieve data objects of the users. A storage controller is associated with each location to direct data object transfers between the data storage devices of the associated location and the server using an existing map structure that describes the data objects in each location. A management module is adapted to generate a new map structure, migrate at least one data object from an existing location described by the existing map structure to a new location described by the new map structure, and to distribute the new map structure to each of the storage controllers after the migration of the at least one data object.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: Craig F. Cutforth, Caroline W. Arnold, Christopher J. DeMattio
  • Imprint pattern guided self-assembly of lamellar block copolymer for BPM
    Patent number: 9773520
    Abstract: The embodiments disclose a method of using a trimmed imprinted resist and chemical contrast pattern to guide a directed self-assembly (DSA) of a predetermined lamellar block copolymer (BCP), creating chromium (Cr) lamellar guiding lines using the BCP and DSA in a dry Cr lift-off process and etching the Cr lamellar guiding line patterns into a substrate to fabricate the imprint template.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: September 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: XiaoMin Yang, Shuaigang Xiao, Yautzong Hsu, HongYing Wang, Kim Y. Lee
  • Component configured to stiffen an electric motor assembly
    Patent number: 9774226
    Abstract: An apparatus includes a first component and a second component. The second component is located at a first position. The second component includes a first connection to the first component. The first position and the first connection are configured to stiffen an electric motor assembly.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: Timothy E. Langlais, Matthew M. McConnell, Paco G. Flores
  • Methods of forming features
    Patent number: 9767989
    Abstract: A method of forming a feature in a void, the method including filling the void having at least one sloped wall with a polymeric material; forming a layer of photoresist over the polymeric material; forming a gap in the layer of photoresist; and etching the polymeric material exposed by the gap in the layer of photoresist to form a feature.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Sridhar Dubbaka, Sriram Viswanathan, Christina Hutchinson
  • Removable circuit for unlocking self-encrypting data storage devices
    Patent number: 9768952
    Abstract: Data storage devices (“DSDs”) can be cryptographically locked, and may be unlocked with encryption keys. One or more encryption keys may be stored remotely in a key server, and may be retrieved by a removable circuit that can be coupled to a server, such as a data server, email server, file system server, other server, or other system. The removable circuit can determine which of the DSDs are locked, and may transmit a request to the key server for encryption keys corresponding to the locked DSDs. The removable circuit can unlock the locked DSDs with the encryption keys provided by the key server.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Christopher Allo, Saheb Biswas
  • Data transcription in a data storage device
    Patent number: 9767322
    Abstract: A method of protecting information in a data storage device is provided. The method includes receiving, in the data storage device, encrypted data via a host computer in which the data storage device is employed. The encrypted data is then decrypted, and re-encrypted, in the data storage device, either before storage or just before data is transferred back to the host computer. The decryption and re-encryption (transcription) is performed substantially independently of the host computer. In addition, a data storage device, readable by a computer system, for implementing the above method for protecting information is provided.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Laszlo Hars, Robert H Thibadeau
  • Management of device firmware update effects as seen by a host
    Patent number: 9766878
    Abstract: Management of device firmware update effects as seen by a computing host enables continuously running an OS on the host across a device firmware update, e.g., via delaying visibility of at least a portion of effects of the firmware update, such as in a context where without the delay in visibility the OS would encounter an unrecoverable error and crash. For example, a device (e.g. an SSD) is coupled to a computing host running an unmodified version of Windows. Firmware on the device is updated/activated, such as by being booted. Visibility of a portion of information that would otherwise become immediately visible to the OS (upon activation of updated firmware) is delayed until a power cycle of the device. If the portion includes, e.g., a firmware revision identifier, then the delayed visibility enables continuously running the OS across the firmware update/activation without rebooting the OS.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Ross John Stenfort, Keith Patrick McKay
  • Chemical characterization of surface features
    Patent number: 9766179
    Abstract: Provided herein is an apparatus, including an optical characterization device; a photon detector array configured to sequentially receive a first set of photons scattered from surface features of an article and a second set of photons scattered from surface features of the article and subsequently processed by the optical characterization device; and a chemical characterization means for chemically characterizing the surface features of the article, wherein the chemical characterization means is configured for processing the first set of photons received by the photon detector array and the second set of photons received by the photon detector array.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, Samuel Kah Hean Wong, Maissarath Nassirou, Henry Luis Lott, David M. Tung, Florin Zavaliche, Stephen Keith McLaurin
  • Surface features characterization
    Patent number: 9766184
    Abstract: Provided herein is an apparatus, including two photon emitters and a photon detector array. The two photon emitters are configured to emit photons onto an entire surface of an article. The photon detector array includes a number of photon detectors configured to detect photons scattered from features in the entire surface of the article, wherein the features are less than 500 nm in their largest dimension.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: September 19, 2017
    Assignee: Seagate Technology LLC
    Inventors: Joachim Walter Ahner, Stephen Keith McLaurin, Samuel Kah Hean Wong, Henry Luis Lott