Invention Grant
- Patent Title: Magnetic tape medium servo pattern writing method using single coil multi-gap write head
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Application No.: US15264358Application Date: 2016-09-13
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Publication No.: US09830943B2Publication Date: 2017-11-28
- Inventor: Giovanni Cherubini , Johan B. C. Engelen , Simeon Furrer , Mark A. Lantz
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Priority: GB1211473.2 20120628
- Main IPC: G11B20/12
- IPC: G11B20/12 ; G11B5/265 ; G11B5/17 ; G11B15/087 ; G11B5/584 ; G11B5/78 ; G11B5/008 ; G11B5/592

Abstract:
A method for writing a servo pattern to a magnetic tape medium includes orienting a magnetic flux in opposite directions across gaps in the magnetic tape medium, and moving the magnetic tape medium with its servo band above two gaps in a direction along a longitudinal extension of the magnetic tape medium. The magnetic tape medium includes a servo band along the longitudinal extension of the magnetic tape medium and a servo pattern organized in a servo frame with a first burst having at least two servo stripes, and a second burst having at least two servo stripes. For at least one of the first and second bursts, different stripes within a same burst have opposite magnetic polarities with respect to one another. The method further includes applying a current pulse to the coil, moving the magnetic tape medium, and applying another current pulse to the coil.
Public/Granted literature
- US20170076747A1 MAGNETIC TAPE MEDIUM WITH MAGNETICALLY ENCODED SERVO BAND BURSTS Public/Granted day:2017-03-16
Information query
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