发明授权
- 专利标题: Magnetic recording medium with laser-formed servo-marks
- 专利标题(中): 具有激光成形伺服标记的磁记录介质
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申请号: US09311363申请日: 1999-05-13
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公开(公告)号: US06549360B1公开(公告)日: 2003-04-15
- 发明人: Jialuo Jack Xuan , Thanh Duc Nguyen , Chung-Yuang Shih
- 申请人: Jialuo Jack Xuan , Thanh Duc Nguyen , Chung-Yuang Shih
- 主分类号: G11B1902
- IPC分类号: G11B1902
摘要:
A magnetic recording medium is formed with a distribution of laser micromachined servo-marks in the form of pits or indentations with an attendant reduction in servo-tracking area and increased data-recording speed. Embodiments include laser texturing to form a radially extending linear or arcuate series of circular or elliptical pits across the data zone. The micromachined servo-marks are detected by mechanical or electrical means and denote the beginning and end of magnetically recorded servo-information in a data track, thereby enabling accurate and timely positioning of the read/write head by the servo-controller of the hard drive.
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