发明授权
- 专利标题: Apparatus for controlling reading and writing in a disk drive
- 专利标题(中): 用于控制磁盘驱动器中的读写的装置
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申请号: US58348申请日: 1993-05-05
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公开(公告)号: US5285327A公开(公告)日: 1994-02-08
- 发明人: Steven R. Hetzler
- 申请人: Steven R. Hetzler
- 申请人地址: NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: NY Armonk
- 主分类号: G11B20/10
- IPC分类号: G11B20/10 ; G11B20/12 ; G11B20/14 ; G11B21/10 ; G11B27/30 ; G11B5/09 ; G11B5/596 ; G11B15/52 ; G11B27/22
摘要:
A method and means is described wherein servo sectors written on a disk (or servo sections written on a tape) are equally spaced on a given track and read during seek, settle and track following operations. An algorithm is used to determine the allowable time separation between servo sectors (or sections) on a track and lengths of associated data sections, such as data sectors or variable length records, that may be accommodated on the disk or tape in such manner that each of the servo sectors (or sections) equally spaced on a given track is located within a data field of a data sector or within an identification region or immediately after an address indicating mark (such as address mark or index mark). The rate at which the servo sector (or section) is sampled is constant and independent of the number and lengths of the data sections. As a result of this independent relationship, this technique is suitable for CLD recording, to banded disks using sectored servo as in conventional FBA, and also even to non-sectored architectures, such as count-key-data (CKD), wherein the data is written in records of variable length, and to tape drives formatted in FBA or CKD.
公开/授权文献
- US6023575A Method of simulating semiconductor device 公开/授权日:2000-02-08
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