-
公开(公告)号：EP0929067A1
公开(公告)日：1999-07-14
申请号：EP99100195.9
申请日：1999-01-07
申请人： Hitachi, Ltd.
发明人： Nishida, Yasutaka , Hamaguchi, Takehiko , Takano, Hisashi , Ide, Hiroshi , Sawaguchi, Hideki, Center for magn.research 0401 , Tomiyama, Futoshi
摘要： When the amount of position error PE of a magnetic head meets the condition of Ewf>PE>=Eww for two threshold values Ewf and Eww meeting Ewf>Eww, the track is registered in the track information table as a track requiring rewrite and the tracks on both sides neighboring to the track are temporarily write-inhibited. The data of the track is rewritten on another track later so as to maintain the data.
By doing this, the offtrack of the recording track can be made smaller without sacrifice of the access speed and the occurrence probability of write fault can be reduced. Furthermore, the reliability of a magnetic disk apparatus can be improved.摘要翻译： 当磁头的位置误差PE的数量满足Ewf> PE> = Eww的两个阈值Ewf和Eww满足Ewf> Eww的条件时，轨道作为需要重写的轨迹被登记在轨道信息表中，并且轨道 在与轨道相邻的两侧临时禁止写入。 轨道的数据稍后重写在另一个轨道上，以便维护数据。 通过这样做，可以在不牺牲访问速度的情况下使记录轨道的后部变小，并且可以减少写入故障的发生概率。 此外，可以提高磁盘装置的可靠性。
-
公开(公告)号：EP0930613A1
公开(公告)日：1999-07-21
申请号：EP98124874.3
申请日：1998-12-30
申请人： Hitachi, Ltd.
发明人： Ide, Hiroshi , Tomiyama, Futoshi , Nishida, Yasutaka , Hamaguchi, Takehiko , Takano, Hisashi , Maruyama, Yohji , Nakamura, Atsushi , Sawaguchi, Hideki c/oUniversity of California
摘要： An information storage apparatus having a disk medium 3 with data recording areas 203 along a plurality of tracks concentrically arranged, a head 4 for recording and reproducing data on tracks of the disk medium, an actuator 5 for moving the head to a desired track among the plurality of tracks, and an electric circuit 7 for controlling recording and reproducing and for detecting the distance from a recorded magnetization pattern on the adjacent tracks in the radial direction by detecting already recorded signals of adjacent tracks during data recording. By use of this constitution, even if the track density is increased, the upper limit of the threshold value setting range in the function for preventing from offtrack recording of the information storage apparatus can be increased and a high track density of the information storage apparatus can be easily realized.
摘要翻译： 一种信息存储装置，具有一个磁盘介质3，具有沿同心排列的多个轨道的数据记录区域203，用于在磁盘介质的磁道上记录和再现数据的磁头4;用于将磁头移动到所需磁道 多个磁道，以及电路7，用于通过在数据记录期间检测相邻轨道的已经记录的信号来控制记录和再现并且通过在数据记录期间检测相邻轨道的已记录的信号来检测与径向上的相邻轨道上的记录的磁化模式的距离。 通过使用这种结构，即使磁道密度增大，也可以提高防止信息存储装置的高速记录功能的阈值设定范围的上限，信息存储装置的高磁道密度可以 容易实现
-
公开(公告)号：EP0930613B1
公开(公告)日：2003-03-19
申请号：EP98124874.3
申请日：1998-12-30
申请人： Hitachi, Ltd.
-
-
搜索结果
3 条记录 (耗时 0.008 秒)
