发明申请
- 专利标题: DISK DRIVE WITH VARIABLE INCREMENTED COUNTING OF WRITES TO THE DATA TRACKS FOR MINIMIZING THE EFFECT OF FAR TRACK ERASURE
- 专利标题(中): 磁盘驱动器,可变数据写入数据跟踪,以最小化雷达跟踪效应的影响
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申请号: US12839391申请日: 2010-07-19
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公开(公告)号: US20120014013A1公开(公告)日: 2012-01-19
- 发明人: Zvonimir Z. Bandic , Marco Sanvido , Bruce Alexander Wilson
- 申请人: Zvonimir Z. Bandic , Marco Sanvido , Bruce Alexander Wilson
- 申请人地址: US CA San Jose
- 专利权人: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- 当前专利权人: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- 当前专利权人地址: US CA San Jose
- 主分类号: G11B15/04
- IPC分类号: G11B15/04
摘要:
A hard disk drive (HDD) minimizes the effects of far track erasure (FTE) by counting the number of writes to the data tracks and incrementing counters based on the known effect of FTE on each track. The extent of the FTE effect is determined for each track within a range of tracks of the track being written, and based on the relative FTE effect for all the tracks in the range a count increment (CI) is determined for each track within the range. A counter is maintained for each track. For every writing to a track, a count for each track within a range of the track being written is increased by the CI value associated with the track number within the range. When the count value for a track reaches a predetermined threshold the data is read from that track and rewritten, preferably to the same track.