发明名称 |
Fault tolerant servo address mark for disk drive |
摘要 |
Apparatus and method for detecting occurrence of a non-pulse interval of predetermined length between a beginning pulse and an ending pulse as included within a sequence comprising a unique timing mark within a stream of pulses supplied from a source with a state machine. The method of the state machine includes the the steps of: advancing through a plurality of nominal states marking in time the non-pulse interval, branching to one of a plurality of available spurious pulse states from one of the nominal states upon detection of a first unexpected pulse, returning to advance through predetermined remaining ones of the plurality of nominal states following detection of the first unexpected pulse, reaching a completion state following the nominal states if only the first unexpected pulse is detected, and reaching an error state following a branch to another one of the plurality of available spurious pulse states upon detection of a second unexpected pulse within the non-pulse interval.
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申请公布号 |
US5544135(A) |
申请公布日期 |
1996.08.06 |
申请号 |
US19940321307 |
申请日期 |
1994.10.11 |
申请人 |
QUANTUM CORPORATION |
发明人 |
AKIN, JR., WILLIAM R.;BUI, TRINH C. |
分类号 |
G11B5/596;(IPC1-7):G11B17/22;G11B5/09 |
主分类号 |
G11B5/596 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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