首页>
外国专利>
Shingled-writing thermal assistance recording (TAR) disk drive with avoidance of adjacent track erasure from a wide-area heater
Shingled-writing thermal assistance recording (TAR) disk drive with avoidance of adjacent track erasure from a wide-area heater
展开▼
机译:混合写入的热辅助记录(TAR)磁盘驱动器,避免了广域网加热器擦除相邻磁道
展开▼
页面导航
摘要
著录项
相似文献
摘要
A thermally-assisted recording (TAR) disk drive that uses “shingled” recording and a rectangular waveguide as a “wide-area” heat source includes a controller that counts the number of writes to each annular band of data tracks. The wide-area heater generates a heat spot that extends across multiple tracks, so that each time an annular band is written, the data in tracks in adjacent bands are also heated. Because the bands are written independently, the number of passes of the heat spot and thereby the number of times the data tracks in a band are exposed to elevated temperatures without being re-written is related to the number of re-writes of the adjacent bands. The number of writes to each band is counted and when that count reaches a predetermined threshold value, one or more tracks in an adjacent band are re-written to avoid reaching an unacceptable level of magnetization decay in the tracks of the adjacent band.
展开▼