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公开(公告)号:US20230139005A1
公开(公告)日:2023-05-04
申请号:US18050231
申请日:2022-10-27
Applicant: FUJIFILM Corporation
Inventor: Toru NAKAO , Tetsuya Kaneko , Yoichi Akano
IPC: 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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公开(公告)号:US20230065359A1
公开(公告)日:2023-03-02
申请号:US17822803
申请日:2022-08-29
Applicant: FUJIFILM CORPORATION
Inventor: Junichi NAKAMIGAWA , Yasushi KOMORI , Yusuke KANEKO , Tadashi KIRA , Norihito KASADA , Toru NAKAO
Abstract: A magnetic tape cartridge includes a case that accommodates a magnetic tape on which a plurality of servo bands and a plurality of data bands are formed, servo patterns being recorded in the servo bands, and a memory provided in the case. The memory stores servo pattern interval-related information related to a servo pattern interval determined for each of the plurality of data bands included in the magnetic tape. The servo pattern interval is commonly used for a plurality of division areas obtained by dividing the data band in a width direction of the magnetic tape, and is a representative interval between a first servo pattern and a second servo pattern.
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公开(公告)号:US20220254375A1
公开(公告)日:2022-08-11
申请号:US17591593
申请日:2022-02-02
Applicant: FUJIFILM CORPORATION
Inventor: Yusuke KANEKO , Toru NAKAO , Atsushi MUSHA , Norihito KASADA
IPC: G11B5/78
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:US20240363143A1
公开(公告)日:2024-10-31
申请号:US18768322
申请日:2024-07-10
Applicant: FUJIFILM Corporation
Inventor: Toru NAKAO , Tetsuya KANEKO , Yoichi AKANO
CPC classification number: G11B5/56 , G11B5/00821
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.
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15.
公开(公告)号:US20240135975A1
公开(公告)日:2024-04-25
申请号:US18405166
申请日:2024-01-05
Applicant: FUJIFILM Corporation
Inventor: Toru NAKAO , Tetsuya KANEKO , Yoichi AKANO
IPC: G11B27/36
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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16.
公开(公告)号:US20230154494A1
公开(公告)日:2023-05-18
申请号:US18158048
申请日:2023-01-23
Applicant: FUJIFILM Corporation
Inventor: Toru NAKAO , Norihito KASADA , Tetsuya KANEKO , Atsushi MUSHA
IPC: G11B15/43
CPC classification number: G11B15/43
Abstract: Provided is a magnetic tape cartridge including: a case in which a magnetic tape is accommodated; and a storage medium provided in the case, in which the storage medium stores tension allowable range related information regarding an allowable range of tension applied to the magnetic tape.
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17.
公开(公告)号:US20210098018A1
公开(公告)日:2021-04-01
申请号:US17022112
申请日:2020-09-16
Applicant: FUJIFILM CORPORATION
Inventor: Toru NAKAO , Hodaka SUZUKI , Yoichi AKANO
Abstract: A recording and reproducing device includes: a reading unit that reads production information from a recording medium of a magnetic tape cartridge, the magnetic tape cartridge including a magnetic tape, and the recording medium other than the magnetic tape and on which the production information is recorded, the production information being information regarding the magnetic tape obtained in a production process of the magnetic tape cartridge; and a control unit that performs, as an initialization process of the magnetic tape cartridge, control of recording the production information on the magnetic tape and invalidating the production information in the recording medium.
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18.
公开(公告)号:US20210098016A1
公开(公告)日:2021-04-01
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.
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19.
公开(公告)号:US20240363142A1
公开(公告)日:2024-10-31
申请号:US18768256
申请日:2024-07-10
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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20.
公开(公告)号:US20240233778A9
公开(公告)日:2024-07-11
申请号:US18405166
申请日:2024-01-05
Applicant: FUJIFILM Corporation
Inventor: Toru NAKAO , Tetsuya KANEKO , Yoichi AKANO
IPC: G11B27/36
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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