专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5241433A Disk drive servo control 失效
标题翻译：磁盘驱动伺服控制
公开(公告)号：US5241433A
公开(公告)日：1993-08-31
申请号：US965038
申请日：1992-10-22
申请人： Todd B. Anderson , Mark E. Bofferding , Martin R. Green , Mark D. Hagen , Joseph M. Humel , William J. Hunt , Lawrence P. Segar , John J. Stephenson , Michael C. Stich
发明人： Todd B. Anderson , Mark E. Bofferding , Martin R. Green , Mark D. Hagen , Joseph M. Humel , William J. Hunt , Lawrence P. Segar , John J. Stephenson , Michael C. Stich
IPC分类号： G11B5/596
CPC分类号： G11B5/59655
摘要： In a disk storage device dedicated servo system, a reference track is written in the outer guardband of the servo surface and each of the data surfaces. Supplemental position error signal (PES) values are obtained from the difference of servo and data surface samples at a plurality of locations around the disk and stored for access during read/write operations. The supplemental PES values are combined with the dedicated surface PES values to yield a composite PES that more accurately follows the data track centerline of the disk surface being addressed. The supplemental PES values are also periodically updated. To provide a more accurate correction of the composite PES, two consecutive supplemental values are used and an interpolation is calculated to provide a continuously changing supplemental PES value for modification of each sector actuator drive pulse between the two current supplemental PES values. Provision is also made in the apparatus to make the correction technique tolerant of tangential skew that may make tracks unreadable because of early or late timing through the provision of sequences of alternative early and later sample sector sequences.
摘要翻译：在盘存储装置专用伺服系统中，将参考轨迹写入伺服表面的外保护带和每个数据表面。补充位置误差信号（PES）值是从磁盘周围的多个位置处的伺服和数据表面采样的差异获得的，并且在读/写操作期间被存储用于存取。补充的PES值与专用表面PES值组合以产生更精确地跟随被寻址的盘表面的数据轨道中心线的复合PES。补充的PES值也被定期更新。为了提供复合PES的更准确的校正，使用两个连续的补充值，并且计算插值以提供连续改变的补充PES值，以修改两个当前补充PES值之间的每个扇区致动器驱动脉冲。在装置中也作出规定，以使得校正技术能够容忍切向偏斜，由于提供替代的早期和后期采样扇区序列的序列，可能导致轨迹不可读，因为它们的早期或晚期定时。

IPRDB

热门服务

关于我们

友情链接

联系方式