- Patent Title: Servo pattern recording method, servo pattern recording apparatus, method of producing tape-like magnetic recording medium, tape-like magnetic recording medium, and servo write head
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Application No.: US18281144Application Date: 2022-02-28
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Publication No.: US12136437B2Publication Date: 2024-11-05
- Inventor: Minoru Yamaga
- Applicant: Sony Group Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Group Corporation
- Current Assignee: Sony Group Corporation
- Current Assignee Address: JP Tokyo
- Agency: K&L Gates LLP
- Priority: JP2021-039338 20210311
- International Application: PCT/JP2022/008219 WO 20220228
- International Announcement: WO2022/190928 WO 20220915
- Main IPC: G11B20/12
- IPC: G11B20/12 ; G11B5/008
Abstract:
A servo pattern recording method includes: determining a first servo band group that includes three or more servo bands for recording a servo pattern in which first servo band identification information having a plurality of bits is to be embedded, and a second servo band group that includes three or more servo bands for recording a servo pattern in which second servo band identification information having a plurality of bits is to be embedded, the second servo band identification information being different from the first servo band identification information; and recording the first and second servo band identification information on the first and second servo band groups, respectively, such that a combination of a first pair and a second pair is not duplicated, the first pair being a pair of servo band identification information and a phase in one servo band read by a first servo read head, the second pair being a pair of servo band identification information and a phase in the other servo band read by a second servo read head.
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