公开(公告)号：US20130028061A1

公开(公告)日：2013-01-31

申请号：US13192437

申请日：2011-07-27

申请人： Hal J. Rosen ,  Barry Cushing Stilpe ,  Petrus Antonius VanDerHeijden

发明人： Hal J. Rosen ,  Barry Cushing Stilpe ,  Petrus Antonius VanDerHeijden

IPC分类号： G11B5/02 ,  G11B13/04

CPC分类号： G11B5/02 ,  G11B5/012 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

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.

摘要翻译： 使用带有遮蔽的记录和矩形波导作为广域热源的热辅助记录（TAR）磁盘驱动器包括对数据轨道的每个环形带的写入次数进行计数的控制器。 广域加热器产生一个延伸穿过多个轨迹的热点，因此每次写入一个环形带时，相邻带中轨道中的数据也被加热。 由于频带是独立写入的，所以热点的通过次数以及频带中数据轨迹的次数暴露于升高的温度而不被重新写入与相邻频带的重写次数有关 。 对每个频带的写入次数进行计数，并且当该计数达到预定阈值时，重新写入相邻频带中的一个或多个磁道，以避免在相邻频带的磁道中达到不可接受的磁化衰减水平。