Patents by Inventor Yoichi AKANO

Yoichi AKANO 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: 12073859
    Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a reference servo pattern by a servo reading element in the storage medium as an ideal waveform signal, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal with the servo band signal. The reference servo pattern is recorded between a BOT section and an EOT section in a longitudinal direction of the magnetic tape.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: August 27, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Tetsuya Kaneko, Toru Nakao, Yoichi Akano
  • Patent number: 12068011
    Abstract: A magnetic head includes a first servo reading element pair, a second servo reading element pair, and a plurality of magnetic elements. The first servo reading element pair consists of a first servo reading element and a second servo reading element, the second servo reading element pair consists of a third servo reading element and a fourth servo reading element, the first servo reading element and the third servo reading element are disposed on one end side of the plurality of magnetic elements and read one servo band of the pair of servo bands, and the second servo reading element and the fourth servo reading element are disposed on the other end side of the plurality of magnetic elements and read the other servo band of the pair of servo bands.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: August 20, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Patent number: 12057148
    Abstract: A magnetic head includes a pair of servo reading elements corresponding to a pair of servo bands adjacent to each other in a width direction. A processor acquires a first signal based on a first result obtained by reading a servo pattern in a first servo band by a first servo reading element included in a pair of servo reading elements, acquires a second signal based on a second result obtained by reading the servo pattern in a second servo band by a second servo reading element included in the pair of servo reading elements, and outputs a deviation amount signal corresponding to a deviation amount in time between the first signal and the second signal.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: August 6, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Publication number: 20240233778
    Abstract: A detection device includes a processing device and a storage medium. An ideal waveform signal indicating an ideal waveform of a servo pattern signal which is a result of reading a servo pattern recorded in a servo band of a magnetic tape by a servo reading element is stored in advance in the storage medium. The processing device acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects the servo pattern signal by comparing the servo band signal with the ideal waveform signal.
    Type: Application
    Filed: January 5, 2024
    Publication date: July 11, 2024
    Applicant: FUJIFILM Corporation
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Patent number: 12027185
    Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a servo pattern by a servo reading element from a magnetic tape in which the servo pattern is recorded in a servo band, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects a servo pattern signal indicating the servo pattern by comparing the ideal waveform signal stored in the storage medium with the servo band signal.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: July 2, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yoichi Akano, Toru Nakao, Tetsuya Kaneko
  • Publication number: 20240212708
    Abstract: A plurality of servo patterns are recorded in a magnetic tape along a longitudinal direction. The servo pattern is at least one linear magnetization region pair. The linear magnetization region pair includes a first linear magnetization region, which is linearly magnetized, and a second linear magnetization region, which is linearly magnetized. The first linear magnetization region and the second linear magnetization region are inclined in opposite directions with respect to a first imaginary straight line along a width direction of the magnetic tape. The first linear magnetization region has a steeper inclined angle with respect to the first imaginary straight line than the second linear magnetization region.
    Type: Application
    Filed: March 7, 2024
    Publication date: June 27, 2024
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Patent number: 11996125
    Abstract: A detection device includes a processor. The processor compares a servo band signal, which is a result of reading a servo band in which a servo pattern is recorded from a magnetic tape including the servo band by a servo reading element, with a threshold value to detect a servo pattern signal indicating the servo pattern. The threshold value is determined in accordance with an angle formed by the servo pattern and the servo reading element.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: May 28, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Tetsuya Kaneko, Toru Nakao, Yoichi Akano
  • Publication number: 20240144968
    Abstract: A first straight line region and a second straight line region of the straight line region pair are inclined in opposite directions with respect to a first imaginary straight line. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. A plurality of gap patterns deviate from each other by a predetermined interval in a direction corresponding to a longitudinal direction of the magnetic tape, between the gap patterns adjacent to each other along the direction corresponding to the width direction of the magnetic tape. A substrate is inclined with respect to the first imaginary straight line.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 2, 2024
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Publication number: 20240135975
    Abstract: A detection device includes a processing device and a storage medium. An ideal waveform signal indicating an ideal waveform of a servo pattern signal which is a result of reading a servo pattern recorded in a servo band of a magnetic tape by a servo reading element is stored in advance in the storage medium. The processing device acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects the servo pattern signal by comparing the servo band signal with the ideal waveform signal.
    Type: Application
    Filed: January 5, 2024
    Publication date: April 25, 2024
    Applicant: FUJIFILM Corporation
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Publication number: 20240096351
    Abstract: A plurality of gap patterns are formed on a front surface of a substrate along a direction corresponding to a width direction of a magnetic tape. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. Positions of the plurality of gap patterns are aligned in a longitudinal direction of the magnetic tape. A pulse signal is supplied to each of the plurality of gap patterns with a delay of a predetermined time from one side to the other side in a direction in which the plurality of gap patterns are arranged.
    Type: Application
    Filed: November 28, 2023
    Publication date: March 21, 2024
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Patent number: 11908498
    Abstract: A first straight line region and a second straight line region of the straight line region pair are inclined in opposite directions with respect to a first imaginary straight line. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. A plurality of gap patterns deviate from each other by a predetermined interval in a direction corresponding to a longitudinal direction of the magnetic tape, between the gap patterns adjacent to each other along the direction corresponding to the width direction of the magnetic tape. A substrate is inclined with respect to the first imaginary straight line.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: February 20, 2024
    Assignee: FUJIFILM CORPORATION
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Patent number: 11900969
    Abstract: A detection device includes a processing device and a storage medium. An ideal waveform signal indicating an ideal waveform of a servo pattern signal which is a result of reading a servo pattern recorded in a servo band of a magnetic tape by a servo reading element is stored in advance in the storage medium. The processing device acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects the servo pattern signal by comparing the servo band signal with the ideal waveform signal.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: February 13, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Patent number: 11900976
    Abstract: A processing device stores a result of reading a reference servo pattern by a servo reading element from a magnetic tape in which the reference servo pattern is recorded, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band of the magnetic tape by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal stored in the storage medium with the servo band signal. The magnetic tape has a data band. The reference servo pattern is recorded in the data band.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: February 13, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Yoichi Akano, Toru Nakao, Tetsuya Kaneko
  • Patent number: 11894027
    Abstract: A plurality of gap patterns are formed on a front surface of a substrate along a direction corresponding to a width direction of a magnetic tape. The first straight line region has a steeper inclined angle with respect to the first imaginary straight line than the second straight line region. Positions of both ends of the first straight line region and positions of both ends of the second straight line region are aligned in a direction corresponding to a width direction of a magnetic tape. Positions of the plurality of gap patterns are aligned in a longitudinal direction of the magnetic tape. A pulse signal is supplied to each of the plurality of gap patterns with a delay of a predetermined time from one side to the other side in a direction in which the plurality of gap patterns are arranged.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: February 6, 2024
    Assignee: FUJIFILM CORPORATION
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Publication number: 20230317108
    Abstract: A magnetic head includes a pair of servo reading elements corresponding to a pair of servo bands adjacent to each other in a width direction. A processor acquires a first signal based on a first result obtained by reading a servo pattern in a first servo band by a first servo reading element included in a pair of servo reading elements, acquires a second signal based on a second result obtained by reading the servo pattern in a second servo band by a second servo reading element included in the pair of servo reading elements, and outputs a deviation amount signal corresponding to a deviation amount in time between the first signal and the second signal.
    Type: Application
    Filed: February 22, 2023
    Publication date: October 5, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Toru Nakao, Tetsuya Kaneko, Yoichi Akano
  • Publication number: 20230317106
    Abstract: A magnetic head includes a first servo reading element pair, a second servo reading element pair, and a plurality of magnetic elements. The first servo reading element pair consists of a first servo reading element and a second servo reading element, the second servo reading element pair consists of a third servo reading element and a fourth servo reading element, the first servo reading element and the third servo reading element are disposed on one end side of the plurality of magnetic elements and read one servo band of the pair of servo bands, and the second servo reading element and the fourth servo reading element are disposed on the other end side of the plurality of magnetic elements and read the other servo band of the pair of servo bands.
    Type: Application
    Filed: February 21, 2023
    Publication date: October 5, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Toru NAKAO, Tetsuya KANEKO, Yoichi AKANO
  • Publication number: 20230206950
    Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a reference servo pattern by a servo reading element in the storage medium as an ideal waveform signal, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal with the servo band signal. The reference servo pattern is recorded between a BOT section and an EOT section in a longitudinal direction of the magnetic tape.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Tetsuya KANEKO, Toru NAKAO, Yoichi AKANO
  • Publication number: 20230206947
    Abstract: A processing device stores a result of reading a reference servo pattern by a servo reading element from a magnetic tape in which the reference servo pattern is recorded, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading a servo pattern recorded in a servo band of the magnetic tape by the servo reading element, and detects a servo pattern signal which is a result of reading the servo pattern by the servo reading element by comparing the ideal waveform signal stored in the storage medium with the servo band signal. The magnetic tape has a data band. The reference servo pattern is recorded in the data band.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoichi AKANO, Toru NAKAO, Tetsuya KANEKO
  • Publication number: 20230206956
    Abstract: A detection device includes a processing device and a storage medium. The processing device stores a result of reading a servo pattern by a servo reading element from a magnetic tape in which the servo pattern is recorded in a servo band, in the storage medium as an ideal waveform signal indicating an ideal waveform, acquires a servo band signal which is a result of reading the servo band by the servo reading element, and detects a servo pattern signal indicating the servo pattern by comparing the ideal waveform signal stored in the storage medium with the servo band signal.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Yoichi Akano, Toru Nakao, Tetsuya Kaneko
  • Publication number: 20230169992
    Abstract: A detection device includes a processor. The processor compares a servo band signal, which is a result of reading a servo band in which a servo pattern is recorded from a magnetic tape including the servo band by a servo reading element, with a threshold value to detect a servo pattern signal indicating the servo pattern. The threshold value is determined in accordance with an angle formed by the servo pattern and the servo reading element.
    Type: Application
    Filed: November 28, 2022
    Publication date: June 1, 2023
    Applicant: FUJIFILM Corporation
    Inventors: Tetsuya Kaneko, Toru Nakao, Yoichi AKANO