Invention Grant
- Patent Title: Patterned media for self-servowriting integrated servo fields
- Patent Title (中): 用于自伺服集成伺服领域的图案化介质
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Application No.: US12800300Application Date: 2010-05-11
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Publication No.: US08477442B2Publication Date: 2013-07-02
- Inventor: Thomas Robert Albrecht , Jonathan Darrel Coker , David Timothy Flynn
- Applicant: Thomas Robert Albrecht , Jonathan Darrel Coker , David Timothy Flynn
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent G. Marlin Knight
- Main IPC: G11B5/09
- IPC: G11B5/09 ; G11B21/02 ; G11B5/596

Abstract:
Pre-patterned discrete track media for self-servo writing are described. Embodiments include land and groove patterns for two or more Integrated Servo sequence fields for each servo sector in which one of the Integrated Servo sequence fields is aligned with the data track and a second sequence is offset by one-half of a track width. The lands and grooves between the Integrated Servo sequence fields are preferably the same width as those between the data tracks to facilitate planarization. Alternative embodiments include a sync feature for each servo sector formed by a selected groove and/or land pattern as a marker for the start of the servo fields. Alternative embodiments include a bootstrap zone with servo patterns that are readable when DC-magnetized. Described methods of self-servowriting include ways to adapt to eccentricity and non-circularity of pre-patterned discrete tracks with respect to the head paths.
Public/Granted literature
- US20110279924A1 Patterned media for self-servowriting integrated servo fields Public/Granted day:2011-11-17
Information query
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