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公开(公告)号：US11908498B2
公开(公告)日：2024-02-20
申请号：US17950142
申请日：2022-09-22
Applicant: FUJIFILM CORPORATION
Inventor： Toru Nakao , Tetsuya Kaneko , Yoichi Akano
CPC classification number: G11B5/588 , G11B5/00882 , G11B5/59638
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.
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公开(公告)号：US11894027B2
公开(公告)日：2024-02-06
申请号：US17950143
申请日：2022-09-22
Applicant: FUJIFILM CORPORATION
Inventor： Toru Nakao , Tetsuya Kaneko , Yoichi Akano
CPC classification number: G11B5/3116 , G11B5/00826
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.
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公开(公告)号：US12136438B2
公开(公告)日：2024-11-05
申请号：US18320418
申请日：2023-05-19
Applicant: FUJIFILM CORPORATION
Inventor： Yusuke Kaneko , Toru Nakao , Atsushi Musha , Norihito Kasada
Abstract: A magnetic tape cartridge includes a case in which a magnetic tape is housed, and an NVM of a cartridge memory provided in the case. The NVM stores cartridge information including an identification ID regarding an allowable range of temperature/humidity in using the magnetic tape, an upper limit of a preservation period of the magnetic tape, and an upper limit of a use frequency of the magnetic tape.
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公开(公告)号：US12073853B2
公开(公告)日：2024-08-27
申请号：US18163606
申请日：2023-02-02
Applicant: FUJIFILM Corporation
Inventor： Toru Nakao , Norihito Kasada , Tetsuya Kaneko , Atsushi Musha
CPC classification number: G11B5/00813 , G11B5/78
Abstract: Provided is a magnetic tape cartridge including: a case in which a magnetic tape on which a plurality of servo bands are formed is accommodated; and a storage medium provided in the case, in which the plurality of servo bands are formed at positions spaced apart from each other in a width direction of the magnetic tape along an entire length direction of the magnetic tape, and the storage medium stores pitch information capable of specifying a pitch in the width direction between the plurality of servo bands and distance information capable of specifying a distance between a plurality of servo reading elements that have read the plurality of servo bands.
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公开(公告)号：US11996125B2
公开(公告)日：2024-05-28
申请号：US18059185
申请日：2022-11-28
Applicant: FUJIFILM Corporation
Inventor： Tetsuya Kaneko , Toru Nakao , Yoichi Akano
CPC classification number: G11B5/00813 , G11B5/78
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.
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Patent Agency Ranking
公开(公告)号：US11276427B2
公开(公告)日：2022-03-15
申请号：US17006917
申请日：2020-08-31
Applicant: FUJIFILM CORPORATION
Inventor： Toru Nakao
Abstract: A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape; a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction; and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.
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公开(公告)号：US11183206B2
公开(公告)日：2021-11-23
申请号：US17029095
申请日：2020-09-23
Applicant: FUJIFILM CORPORATION
Inventor： Hodaka Suzuki , Toru Nakao , Yoichi Akano
Abstract: A magnetic tape cartridge including: a magnetic tape; and a recording medium including a predetermined area for recording defect information, which is information regarding a defect of the magnetic tape detected in a production process of the magnetic tape. A recording device, a recording method, a data recording and reproducing system, and a data recording and reproducing method are also provided.
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公开(公告)号：US12068011B2
公开(公告)日：2024-08-20
申请号：US18171919
申请日：2023-02-21
Applicant: FUJIFILM Corporation
Inventor： Toru Nakao , Tetsuya Kaneko , Yoichi Akano
CPC classification number: G11B5/5508 , G11B5/5928
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.
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公开(公告)号：US11900976B2
公开(公告)日：2024-02-13
申请号：US18145558
申请日：2022-12-22
Applicant: FUJIFILM Corporation
Inventor： Yoichi Akano , Toru Nakao , Tetsuya Kaneko
CPC classification number: G11B5/584 , G11B5/00817
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.
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公开(公告)号：US11900969B2
公开(公告)日：2024-02-13
申请号：US18050231
申请日：2022-10-27
Applicant: FUJIFILM Corporation
Inventor： Toru Nakao , Tetsuya Kaneko , Yoichi Akano
CPC classification number: G11B27/36
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.
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