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1. 发明授权

US06304398B1 Dual modulo gray code positioning system 失效
标题翻译：双模灰码定位系统
公开(公告)号：US06304398B1
公开(公告)日：2001-10-16
申请号：US09374450
申请日：1999-08-14
申请人： Stephen Matthew Gaub , Glen Worstell , Daniel Zaharris , Robert Dale Murphy , Michael Edward Baum , Rodney Brittner
发明人： Stephen Matthew Gaub , Glen Worstell , Daniel Zaharris , Robert Dale Murphy , Michael Edward Baum , Rodney Brittner
IPC分类号： G11B509
CPC分类号： G11B5/59611 , G11B5/59655
摘要： An apparatus and method of reducing the size of a servo burst and thus increasing the disc surface available for data storage is accomplished by uniquely encoding track information in the gray code of a servo burst on a disc. Each track has a unique sequential track identification number assigned to it. A plurality of sets of servo sectors on each track are encoded with a modulo operation of the track identification number for the track each using a unique modulus. Preferably the sectors are grouped into two sets, i.e., even numbered sectors on each track are modulo encoded with a first modulo operation of the track identification number for the track using a first modulus and odd numbered servo sectors on each track are modulo encoded with a second modulo operation of the track identification number for the track using a second modulus. Decoding the absolute track address is accomplished by decoding the modulo numbers and comparing the even sector modulo numbers to the odd numbered sector modulo numbers.
摘要翻译：通过在盘上的伺服脉冲串的灰度码中唯一地编码轨道信息来实现减小伺服脉冲串的大小并从而增加可用于数据存储的盘表面的装置和方法。每个轨道具有分配给它的唯一的顺序轨道标识号。每个轨道上的多组伺服扇区用轨道识别号码的模运算进行编码，每一轨道识别号码使用唯一模数。优选地，扇区被分组成两组，即，使用第一模数对轨道的轨道识别号进行第一模运算，对每个轨道上的偶数扇区进行模数编码，并且每个轨道上的奇数编号的伺服扇区都用使用第二模数对轨道的轨迹识别号进行第二模运算。对绝对磁道地址进行解码是通过解码模数并将偶数扇区模数与奇数扇区模数进行比较来实现的。

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