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1. 发明授权

US5544135A Fault tolerant servo address mark for disk drive 失效
标题翻译：磁盘驱动器的容错伺服地址标志
公开(公告)号：US5544135A
公开(公告)日：1996-08-06
申请号：US321307
申请日：1994-10-11
申请人： William R. Akin, Jr. , Trinh C. Bui
发明人： William R. Akin, Jr. , Trinh C. Bui
IPC分类号： G11B5/596 , G11B17/22 , G11B5/09
CPC分类号： G11B5/59616
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, andreaching 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.
摘要翻译：检测在起始脉冲和结束脉冲之间的预定长度的非脉冲间隔的发生的装置和方法，包括在包括从具有状态机的源提供的脉冲流内的唯一定时标记的序列中。状态机的方法包括以下步骤：通过在时间上标记非脉冲间隔的多个标称状态，从一个标称状态检测多个可用的寄生脉冲状态中的一个，检测到第一检测到第一意外脉冲后返回到预定的多个标称状态中的剩余的一个，达到标称状态之后的完成状态，如果仅检测到第一意外脉冲，并且在分支到达之后达到错误状态在非脉冲间隔内检测到第二意外脉冲时，多个可用寄生脉冲状态中的另一个。

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