Invention Grant
US09123386B2 Data storage system and a method for measuring a change in a spacing between a head and a storage medium of a data storage system
有权
数据存储系统以及用于测量数据存储系统的头部和存储介质之间间隔的变化的方法
- Patent Title: Data storage system and a method for measuring a change in a spacing between a head and a storage medium of a data storage system
- Patent Title (中): 数据存储系统以及用于测量数据存储系统的头部和存储介质之间间隔的变化的方法
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Application No.: US13666118Application Date: 2012-11-01
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Publication No.: US09123386B2Publication Date: 2015-09-01
- Inventor: Zhimin Yuan , Bo Liu , Shengbin Hu , Chun Lian Ong
- Applicant: Agency for Science, Technology and Research
- Applicant Address: SG Singapore
- Assignee: Agency for Science, Technology and Research
- Current Assignee: Agency for Science, Technology and Research
- Current Assignee Address: SG Singapore
- Agency: Crockett & Crockett, PC
- Agent K David Crockett, Esq.; Niky Economy Syrengelas, Esq.
- Priority: SG201108122-1 20111103
- Main IPC: G11B5/60
- IPC: G11B5/60 ; G11B27/36
Abstract:
A method for measuring a change in a spacing between a head and a storage medium of a data storage system. The method includes obtaining a first readback signal from the storage medium using the head at a first spacing between the head and the storage medium, determining a first power spectrum density over a frequency range from the obtained first readback signal, obtaining a second readback signal from the storage medium using the head at a second spacing between the head and the storage medium, determining a second power spectrum density over the frequency range from the obtained second readback signal, and providing a measurement indicative of the change in the spacing based on the determined first power spectrum density and the determined second power spectrum density. A data storage system is also provided.
Public/Granted literature
Information query
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