发明授权
US08331055B2 Control method and apparatus for a dual-channel weighted LPOS combining scheme
有权
双通道加权LPOS组合方案的控制方法和装置
- 专利标题: Control method and apparatus for a dual-channel weighted LPOS combining scheme
- 专利标题(中): 双通道加权LPOS组合方案的控制方法和装置
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申请号: US12500490申请日: 2009-07-09
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公开(公告)号: US08331055B2公开(公告)日: 2012-12-11
- 发明人: Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
- 申请人: Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
- 申请人地址: US 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: US NY Armonk
- 代理机构: Quarles & Brady LLP
- 代理商 Dale F. Regelman
- 主分类号: G11B21/02
- IPC分类号: G11B21/02
摘要:
A method for monitoring a plurality of servo channels, providing a finite state machine (“FSM”) comprising a single servo channel mode and a combined servo channel mode, and moving a sequential information storage medium comprising a plurality of servo bands across a read/write head comprising a corresponding plurality of servo sensors. The method further asserts an acquisition flag by a servo channel if that servo channel is tracking a servo pattern, and asserts a bit flag by a servo channel if a new LPOS bit is decoded. If at least one acquisition flag is asserted, the method determines if a bit flag is asserted by a servo channel associated with said asserted acquisition flag, and if an acquisition flag and a bit flag are asserted by a servo channel, the method determines a relative positioning of each servo sensor with respect to an associated servo pattern.
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