发明授权
- 专利标题： Method and apparatus for reading and writing gray code servo data to magnetic medium using synchronous detection
- 专利标题（中）： 使用同步检测将灰度伺服数据读写写入磁介质的方法和装置
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申请号： US09087364申请日： 1998-05-29
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公开(公告)号： US06201652B1公开(公告)日： 2001-03-13
- 发明人: Francesco Rezzi , Hakan Ozdemir
- 申请人： Francesco Rezzi , Hakan Ozdemir
- 主分类号： G11B509
- IPC分类号： G11B509
摘要：
A method for synchronously detecting servo information from a data disk includes reading servo information from a disk and passing the servo information signal through a Viterbi detector. The disk is encoded in a known data format from Gray code data to obtain a servo information signal, the encoded Gray code data being constrained to allow no more and no fewer than two “1” states to sequentially occur. The Viterbi detector is modified to eliminate state changes that do not occur within the constrained encoded Gray code data.
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