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Patent Agency Ranking
公开(公告)号：US11741992B2
公开(公告)日：2023-08-29
申请号：US16528458
申请日：2019-07-31
Applicant: International Business Machines Corporation
Inventor： Kevin B. Judd , Randy C. Inch , Eiji Ogura , Ernest S. Gale , Pamela R. Nylander-Hill , Dale A. Christiansen , Paul M. Greco , Kevin D. Butt , Steven M. Wallace
CPC classification number: G11B15/18 , G11B5/00813
Abstract: A method for characterizing a magnetic recording tape, according to one approach, includes measuring, using a magnetic head having servo readers of known pitch, a servo band difference at various locations along a length of a magnetic recording tape. The servo band difference measurements and/or derivatives thereof are stored in association with the magnetic recording tape. This procedure creates a characterization of the magnetic recording tape that is useful for assessing aging of the magnetic recording tape, as well as improving subsequent reading and/or writing operations.
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公开(公告)号：US20200143831A1
公开(公告)日：2020-05-07
申请号：US16661929
申请日：2019-10-23
Applicant: International Business Machines Corporation
Inventor： Kevin B. Judd , Randy C. Inch , Eiji Ogura , Ernest S. Gale , Pamela R. Nylander-Hill , Dale A. Christiansen , Paul M. Greco , Kevin D. Butt , Steven M. Wallace
Abstract: An apparatus, according to one embodiment, includes a magnetic head having servo readers of known pitch, a drive mechanism for passing a magnetic recording tape over the magnetic head, and a controller electrically coupled to the magnetic head. The controller is configured to measure, using signals from the magnetic head, a servo band difference at various locations along a length of the magnetic recording tape. The controller is also configured to cause storage of servo band difference information about the servo band difference measurements in association with the magnetic recording tape.
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公开(公告)号：US10832722B2
公开(公告)日：2020-11-10
申请号：US16661929
申请日：2019-10-23
Applicant: International Business Machines Corporation
Inventor： Kevin B. Judd , Randy C. Inch , Eiji Ogura , Ernest S. Gale , Pamela R. Nylander-Hill , Dale A. Christiansen , Paul M. Greco , Kevin D. Butt , Steven M. Wallace
Abstract: An apparatus, according to one embodiment, includes a magnetic head having servo readers of known pitch, a drive mechanism for passing a magnetic recording tape over the magnetic head, and a controller electrically coupled to the magnetic head. The controller is configured to measure, using signals from the magnetic head, a servo band difference at various locations along a length of the magnetic recording tape. The controller is also configured to cause storage of servo band difference information about the servo band difference measurements in association with the magnetic recording tape.
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公开(公告)号：US10566022B1
公开(公告)日：2020-02-18
申请号：US16528475
申请日：2019-07-31
Applicant: International Business Machines Corporation
Inventor： Kevin B. Judd , Randy C. Inch , Eiji Ogura , Ernest S. Gale , Pamela R. Nylander-Hill , Dale A. Christiansen , Paul M. Greco , Kevin D. Butt , Steven M. Wallace
Abstract: An apparatus configured to characterize a magnetic recording tape of a tape cartridge, according to one embodiment, includes a magnetic head having servo readers of known pitch, a drive mechanism for passing a magnetic recording tape over the magnetic head, and a controller electrically coupled to the magnetic head. The controller is configured to measure, using signals from the magnetic head, a servo band difference at various locations along a length of the magnetic recording tape of a tape cartridge. The controller is also configured to store the servo band difference measurements and/or derivatives thereof in association with the tape cartridge.
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公开(公告)号：US10460757B1
公开(公告)日：2019-10-29
申请号：US16181210
申请日：2018-11-05
Applicant: International Business Machines Corporation
Inventor： Kevin B. Judd , Randy C. Inch , Eiji Ogura , Ernest S. Gale , Pamela R. Nylander-Hill , Dale A. Christiansen , Paul M. Greco , Kevin D. Butt , Steven M. Wallace
Abstract: A method for characterizing a magnetic recording tape of a tape cartridge, according to one approach, includes measuring, using a magnetic head having servo readers of known pitch, a servo band difference at various locations along a length of a magnetic recording tape of a tape cartridge. The servo band difference measurements and/or derivatives thereof are stored in association with the tape cartridge. This procedure creates a characterization of the magnetic recording tape that is useful for assessing aging of the magnetic recording tape, as well as improving subsequent reading and/or writing operations.
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