Patents Examined by Peter Vincent Agustin
  • Patent number: 11227635
    Abstract: A recording device includes: a recording unit that records plural objects including data and metadata related to the data on a portable recording medium, and executes a process of recording first set data, which is a set of the metadata included in the object, at every predetermined timing after recording at least one of the objects, wherein each piece of the first set data is a set of the metadata included in the object recorded after recording of immediately preceding recorded first set data.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: January 18, 2022
    Assignee: FUJIFILM CORPORATION
    Inventors: Kentaro Miyamoto, Takashi Miyamoto, Michitaka Kondo
  • Patent number: 11227631
    Abstract: A self servo-write process in performed on two or more recording surfaces simultaneously. In a dual-stage servo system, a first fine positioning servo system that includes a first microactuator independently controls the position of a first read/write head over a first recording surface of a hard disk drive, while a second fine positioning servo system that includes a second microactuator independently controls the position of a second read/write head over a second recording surface of the hard disk drive.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: January 18, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Thorsten Schmidt, Gary W. Calfee, Gabor Szita, Hieu Pham
  • Patent number: 11211094
    Abstract: A data storage device configured to access a magnetic tape is disclosed, wherein the data storage device comprises at least one head configured to access the magnetic tape. A first plurality of data blocks are encoded into a first plurality of ECC sub-blocks including a first ECC sub-block, and the first plurality of ECC sub-blocks are encoded into a first ECC super-block. The first ECC sub-block is written to the magnetic tape, and a write-verify of the first ECC sub-block is executed by reading the first ECC sub-block. When the write-verify passes, a second plurality of data blocks are encoded into a second ECC super-block, and when the write-verify fails, a third plurality of data blocks and the first ECC sub-block are encoded into the second ECC super-block, wherein the second ECC super-block is written to the magnetic tape.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: December 28, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Robert L. Horn, Derrick E. Burton
  • Patent number: 11200914
    Abstract: A recording device includes: a recording unit that records plural objects including data and metadata related to the data on a portable recording medium, and executes a process of recording first set data, which is a set of the metadata included in the object, at every predetermined timing after recording at least one of the objects, wherein each piece of the first set data is a set of the metadata included in the object recorded after recording of immediately preceding recorded first set data.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: December 14, 2021
    Assignee: FUJIFILM CORPORATION
    Inventors: Kentaro Miyamoto, Takashi Miyamoto, Michitaka Kondo
  • Patent number: 11195550
    Abstract: [Object] To provide a technology of a servo write head and the like capable of improving the recording accuracy of a servo pattern. [Solving Means] A servo write head according to the present technology includes a recording surface. This recording surface has a first region and a second region, and records a servo pattern on a magnetic tape by a magnetic gap, the first region being formed in with a first width a width direction and corresponding to a position where the magnetic gap is provided in a longitudinal direction perpendicular to the width direction, the second region being formed with a second width narrower than the first width and corresponding to a position where no magnetic gap is provided in the longitudinal direction.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: December 7, 2021
    Assignee: Sony Corporation
    Inventor: Hiroshi Morita
  • Patent number: 11195546
    Abstract: A method can include obtaining write information corresponding to an index to be written to a tape. The write information can include a target write position on the tape for the index. The method can include making a first determination that the target write position is beyond a threshold position on the tape. The method can include obtaining index information comprising a size of a full index stored on the tape. The method can include making a second determination that the size of the full index exceeds a size of one dataset. The method can include writing, in response to making the first determination and the second determination, the index to the tape. The writing can be in a first position beyond the threshold position. The index can be an incremental index.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: December 7, 2021
    Assignee: International Business Machines Corporation
    Inventors: Setsuko Masuda, Atsushi Abe, Tsuyoshi Miyamura
  • Patent number: 11189307
    Abstract: Aspects of the present disclosure generally relate to a base and related methods for write and read heads. In one example, the base and related methods are used as part of a magnetic storage device, for example a magnetic media drive such as a hard disk drive (HDD) or a magnetic tape drive (e.g., a tape embedded drive). The base includes one or more base bodies formed of a ceramic material. Each base body includes an inward surface, an outward surface opposing the inward surface, a lower surface, and an angled upper surface disposed above the lower surface. Each base body includes a vertical opening extending between the upper surface and the lower surface. In one example, two base bodies are bonded together. In one example, the two base bodies combine to form a single base body of the base that is monolithic and unitary.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: November 30, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Eduardo Torres, Oscar Ruiz, Kenji Kuroki
  • Patent number: 11189305
    Abstract: According to one embodiment, a magnetic disk device includes a disk, a head including a main magnetic pole having a first end and a second end opposite to the first end in a radial direction of the disk, a write shield facing the main magnetic pole with a gap, and an assist element provided in the gap and at a position where a first distance between the first end and the assist element and a second distance between the second end and the assist element are different from each other, and a controller which controls a voltage applied to the assist element according to a shingled write direction in which a second track is overwritten on a first track.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: November 30, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Yusuke Tomoda
  • Patent number: 11189315
    Abstract: An audio processing device includes: a drive circuit; a signal processing circuit; a power supply circuit; a power storage; a switch that selectively switches connection of the drive circuit between the power storage and the power supply circuit; and a controller that causes the switch to connect the drive circuit and the power supply circuit when the drive circuit is to be in a first state, and causes the switch to connect the drive circuit and the power storage when the drive circuit enters a second state. The first state is a state where current consumption of the drive circuit is greater than or equal to a predetermined threshold. The second state is a state where the current consumption of the drive circuit is less than the predetermined threshold.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: November 30, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Mizumata, Masami Yamamoto
  • Patent number: 11183211
    Abstract: Systems and methods for improving seek times in a read channel performing a read operation on a disk drive are disclosed. The method includes extrapolating, based on initial filter settings corresponding to a first user-data region or a first servo-data region and tracked settings varying over time, a proportionality constant for the programmable analog filter, in response to determining a new target frequency for the programmable analog filter corresponding to a second user-data region or a second servo-data region, computing new filter settings for the programmable analog filter based on the extrapolated proportionality constant, and transmitting, to the programmable analog filter, the computed new filter settings corresponding to the new target frequency of the second user-data region or the second servo-data region.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: November 23, 2021
    Assignee: Marvell Asia Pte, Ltd.
    Inventors: Manisha Gambhir, Ahmed Mostafa, Zubir Adal, Jingren Gu
  • Patent number: 11183217
    Abstract: A recording system for a heat assisted magnetic recording hard disc drive (HDD) includes a head suspension pair including a first head/slider facing a first direction, and a second head/slider facing an opposite direction from the first head/slider. A number of near field transducers (NFTs) are disposed on each of the first head/slider and the second head/slider.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: November 23, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Xiong Liu, Lihong Zhang
  • Patent number: 11164599
    Abstract: Provided are a computer program product, system, and method for indicating tracks as erased without deleting data for the tracks. In response to receiving erase commands to erase tracks in the storage, indicating the tracks as erased without performing an erase operation on the tracks subject to the erase command. Data in the storage for the tracks indicated as erased remains in the storage while requests are directed to the tracks indicated as erased. A command is received indicating an operation with respect to a target track. The operation to proceed is permitted with respect to the target track in response to determining that the target track is not indicated as erased. An alternate operation is performed providing a result different from the operation indicated in the command in response to determining that the target track is indicated as erased.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: November 2, 2021
    Assignee: International Business Machines Corporation
    Inventors: John R. Paveza, Gail Spear
  • Patent number: 11164598
    Abstract: A method includes writing first data on a first track of a data storage surface, and storing information for the first data in a memory other than the data storage surface. The method also includes performing a write operation on a second track of the data storage surface after the data is written on the first track. The second track is adjacent to the first track. The method further includes identifying potentially-overwritten sectors of the first track as a result of the performance of the write operation on the second track, and performing a first read operation on the identified potentially-overwritten sectors of the first track after completion of the write operation on the second track. Second data associated with the identified potentially-overwritten sectors is then stored in a solid-state memory, and mirrored to media.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: November 2, 2021
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Anil Kashyap, Jason Charles Jury, Joshua Ward Christensen, Brian T. Edgar, Mark A. Gaertner
  • Patent number: 11158338
    Abstract: A data storage device includes a data storage medium having a data storage surface. The data storage device also includes a first actuator having a first attached slider with a writer configured to write data on the data storage surface. The writer has a media-confronting surface covered by a first non-magnetic overcoat having a first thickness. The data storage device further includes a second actuator having a second attached slider with at least one user-data reader configured to read user data from the data storage surface and no writer for writing data on the data storage surface. The at least one user-data reader has a media-confronting surface covered by a second non-magnetic overcoat having a second thickness that is less than the first thickness of the first non-magnetic overcoat.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: October 26, 2021
    Assignee: Seagate Technology LLC
    Inventors: Mehmet Fatih Erden, Steven Douglas Granz
  • Patent number: 11152025
    Abstract: According to an embodiment, a magnetic disk device includes a magnetic disk including a first storage area and a second storage area different from the first storage area. In the second storage area, both of a first post code that is used to write user data in the first storage area by a first method and a second post code that is used to write user data in the first storage area by a second method are stored in advance. The first method is a method in which one track between two tracks adjacent to each other overlaps a part of the other track between the two tracks. The second method is a method in which two adjacent tracks do not overlap each other.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: October 19, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Masakazu Tsuruoka, Fumiya Kudo, Takao Abe
  • Patent number: 11145332
    Abstract: Systems and methods for proactive transfer of stored data between storage zones to avoid anticipated bit rot are provided. In embodiments, a method includes: determining that one or more quality prediction parameters of a storage zone of a data storage device meet a predetermined threshold for user access or adjacency to another storage zone determined to be unhealthy; and initiating a proactive refreshing of the storage zone based on the determining that the storage zone meets the predetermined threshold, the proactive refreshing of the storage zone including: reading all data in the storage zone; determining that no errors have occurred during the reading of the data; and based on the determination that no errors have occurred, moving all of the data of the storage zone to a new storage zone.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: October 12, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ilya Volvovski, Praveen Viraraghavan, Jordan Harrison Williams, Benjamin Lee Martin, Manish Motwani
  • Patent number: 11145323
    Abstract: A computer-implemented method, according to one embodiment, includes: receiving a first timestamp in response to a first servo reader detecting a stripe of a first servo burst on the magnetic tape, and receiving a second timestamp in response to a second servo reader detecting a stripe of a second servo burst on the magnetic tape. A third timestamp is received in response to the first servo reader detecting a stripe of a third servo burst on the magnetic tape, while a fourth timestamp is received in response to the second servo reader detecting a stripe of a fourth servo burst on the magnetic tape. The first, second, third, and fourth timestamps are used to determine the skew of the magnetic tape. Further still, the first and third servo bursts are in a same first servo sub-frame, while the second and fourth servo bursts are in a same second servo sub-frame.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: October 12, 2021
    Assignee: International Business Machines Corporation
    Inventors: Nhan Xuan Bui, Simeon Furrer, Giovanni Cherubini, Mark Alfred Lantz
  • 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
  • Patent number: 11114124
    Abstract: According to one embodiment, a control device to be used for a magnetic disk device includes a power source control section and a control section. The power source control section configured to change an output voltage value of a voltage supplied to the control device from a power source on the basis of a voltage control parameter. The control section configured to, when a magnetic head makes access to a zone set on a magnetic disk, set a voltage control parameter provided in such a manner as to be correspondent to the zone to the power source control section.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 7, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventor: Yoshihiko Takeda
  • Patent number: 11100950
    Abstract: A method for reading and writing with holographic system includes the following operations: (a) providing a reference light and a signal light; (b) transferring the reference light and the signal light to an optical recording medium, for recording an interference grating; (c) changing the reference light and the signal light and repeating the operations (a) to (b) until M interference gratings are recorded on the optical recording medium; (d) providing a reading light to the optical recording medium, for reading the M interference gratings at the same time to generate an interference result, wherein the interference result is a result that diffraction signals of the M interference gratings interfere to each other; and (e) changing the reading light and repeating the operation (d), for obtaining N interference results. A holographic storage system is also disclosed herein.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: August 24, 2021
    Assignee: National Central University
    Inventors: Yeh-Wei Yu, Ching-Cherng Sun