发明授权
- 专利标题: Embedded servo on track for bit-patterned device
- 专利标题(中): 嵌入式伺服轨道上的位图案设备
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申请号: US12202570申请日: 2008-09-02
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公开(公告)号: US08154813B2公开(公告)日: 2012-04-10
- 发明人: Dieter Klaus Weller , Hans Jurgen Richter , David S. Kuo , Kim Yang Lee
- 申请人: Dieter Klaus Weller , Hans Jurgen Richter , David S. Kuo , Kim Yang Lee
- 申请人地址: US CA Cupertino
- 专利权人: Seagate Technology, LLC
- 当前专利权人: Seagate Technology, LLC
- 当前专利权人地址: US CA Cupertino
- 代理机构: Ladas & Parry, LLP
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B5/596
摘要:
A method of making a disc for a computer disc drive and a disc made in accordance with the same. The disc includes a deposited magnetic layer of a thin film medium over a disc-shaped substrate. A master pattern having a plurality of tracks is recorded on the disc. Each track on the disc includes a plurality of magnetic islands, each having a size and magnetic properties. The size and/or magnetic properties of one or more of the magnetic islands of each track are modulated such that each track has a modulation frequency, so as to imprint a magnetic topology on the disc. The modulation frequency of each track is either a fundamental frequency or an overtone of the fundamental frequency.
公开/授权文献
- US20100053809A1 EMBEDDED SERVO ON TRACK FOR BIT-PATTERNED MEDIA (BPM) 公开/授权日:2010-03-04
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