Patents by Inventor Junzo Noda

Junzo Noda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11935562
    Abstract: The present disclosure is generally related to a tape drive comprising a tape head and a controller coupled to the tape head. The tape head comprises one or more modules, each module comprising a plurality of write heads aligned in a first row, a plurality of read heads aligned in a second row parallel to the first row, and at least four first servo heads aligned in the second row. Two or more first servo heads of the at least four first servo heads are configured to concurrently read first servo data from a first servo track. The controller is configured to concurrently process the first servo data, to compute the position of the tape head based on a known spacing between the at least two servo heads, and to dynamically adjust a position of the tape head based on the processed first servo data.
    Type: Grant
    Filed: February 24, 2022
    Date of Patent: March 19, 2024
    Assignee: Western Digital Technologies, Inc.
    Inventors: Robert G. Biskeborn, Masahito Kobayashi, Junzo Noda
  • Patent number: 11935563
    Abstract: The present disclosure generally relates to a tape drive. The tape drive comprises a first tape head and a second tape head linearly aligned with one another, where the first tape head and the second tape head are configured to concurrently operate. The first tape head and the second tape head each comprise a plurality of write transducers, a plurality of read transducers, and a plurality of servo transducers. The tape drive further comprises a first actuator coupled to the first tape head and a second actuator coupled to the second tape head. The first and second actuators are configured to independently tilt and move the first and second tape heads, respectively. Tilting and moving the first and second tape heads individually enables the tape drive to compensate for non-linear tape dimensional stability effects.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: March 19, 2024
    Assignee: Western Digital Technologies, Inc.
    Inventors: Junzo Noda, Robert G. Biskeborn
  • Publication number: 20230290377
    Abstract: The present disclosure generally relates to a tape drive. The tape drive comprises a first tape head and a second tape head linearly aligned with one another, where the first tape head and the second tape head are configured to concurrently operate. The first tape head and the second tape head each comprise a plurality of write transducers, a plurality of read transducers, and a plurality of servo transducers. The tape drive further comprises a first actuator coupled to the first tape head and a second actuator coupled to the second tape head. The first and second actuators are configured to independently tilt and move the first and second tape heads, respectively. Tilting and moving the first and second tape heads individually enables the tape drive to compensate for non-linear tape dimensional stability effects.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 14, 2023
    Inventors: Junzo NODA, Robert G. BISKEBORN
  • Publication number: 20230267964
    Abstract: The present disclosure is generally related to a tape drive comprising a tape head and a controller coupled to the tape head. The tape head comprises one or more modules, each module comprising a plurality of write heads aligned in a first row, a plurality of read heads aligned in a second row parallel to the first row, and at least four first servo heads aligned in the second row. Two or more first servo heads of the at least four first servo heads are configured to concurrently read first servo data from a first servo track. The controller is configured to concurrently process the first servo data, to compute the position of the tape head based on a known spacing between the at least two servo heads, and to dynamically adjust a position of the tape head based on the processed first servo data.
    Type: Application
    Filed: February 24, 2022
    Publication date: August 24, 2023
    Inventors: Robert G. BISKEBORN, Masahito KOBAYASHI, Junzo NODA
  • Patent number: 10950265
    Abstract: A method of operating a data storage device is disclosed comprising an enclosure comprising a first head actuated over a first disk surface and a second head actuated over a second disk surface. A manufacture printed circuit board (PCB) is coupled to the enclosure, wherein the manufacture PCB comprises at least one dual channel configured to execute concurrent access operations. While the manufacture PCB is coupled to the enclosure, the data storage device is operated as a dual channel device. The manufacture PCB is decoupled from the enclosure and a product PCB is coupled to the enclosure, wherein the product PCB comprises a single channel configured to execute a single access operation.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: March 16, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Junzo Noda, John T. Contreras, Robert C. Reinhart, Michael J. Esmond, Masahito Kobayashi, Alec Parken
  • Patent number: 10896695
    Abstract: A data storage device is disclosed comprising a top head actuated over a top surface of a first disk, a bottom head actuated over a bottom surface of the first disk, a top head actuated over a top surface of a second disk, and a bottom head actuated over a bottom surface of the second disk. A dual channel preamp circuit is coupled to the top and bottom heads of the first and second disks, wherein a selection signal is applied to the dual channel preamp circuit to select between the first disk and the second disk. A concurrent access operation of the top and bottom surface of the selected disk is executed using the dual channel preamp circuit.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: January 19, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Junzo Noda, John T. Contreras, Masahito Kobayashi