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1. 发明授权

US4809091A Disk apparatus 失效
标题翻译：磁盘设备
公开(公告)号：US4809091A
公开(公告)日：1989-02-28
申请号：US38837
申请日：1987-04-15
申请人： Shyoichi Miyazawa , Satoshi Kawamura , Shoichiro Tohyama , Akira Ishibashi , Kazutoshi Kato , Junichi Ideda
发明人： Shyoichi Miyazawa , Satoshi Kawamura , Shoichiro Tohyama , Akira Ishibashi , Kazutoshi Kato , Junichi Ideda
IPC分类号： G11B5/55 , G11B5/596 , G11B5/09 , G11B15/04
CPC分类号： G11B5/5521 , G11B5/59633
摘要： A disk drive system includes a magnetic disk apparatus which accurately positions read/write heads for reading data from and writing data on tracks on the data surface of a rotary disk on a predetermined track on the disk on the basis of servo data written in the servo area formed on the data surface, and a disk controller which controls the mode of operation of the disk apparatus. Index signals respectively indicating the start and end of the servo area are generated on the basis of the result of detection of the angular phase of the disk. The mode of operation of the magnetic disk apparatus is determined on the basis of a write control signal provided by the disk controller. The index signals respectively indicating the start and end of the servo area are sent to the disk controller when the mode of operation is track format write mode, while the index signal indicating the end of the servo area is sent to the disk controller when the mode of operation is other than the track format write mode.
摘要翻译：磁盘驱动器系统包括磁盘装置，其基于写入伺服器中的伺服数据，准确地定位用于从盘上的预定轨道上的旋转盘的数据表面上的数据读取数据的读/写头数据在数据表面上形成的区域，以及控制盘装置的操作模式的盘控制器。基于盘的角度相位的检测结果生成分别表示伺服区域的开始和结束的索引信号。基于由盘控制器提供的写入控制信号来确定磁盘装置的操作模式。当操作模式为轨道格式写入模式时，分别表示伺服区域的开始和结束的索引信号被发送到磁盘控制器，而当模式下指示伺服区域结束的索引信号被发送到磁盘控制器的操作是跟踪格式写入模式。

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