公开(公告)号：US06557124B1

公开(公告)日：2003-04-29

申请号：US09613443

申请日：2000-07-11

申请人： Roy D. Cideciyan ,  Jonathan D. Coker ,  Evangelos S. Eleftheriou ,  Richard L. Galbraith ,  Todd C. Truax

发明人： Roy D. Cideciyan ,  Jonathan D. Coker ,  Evangelos S. Eleftheriou ,  Richard L. Galbraith ,  Todd C. Truax

IPC分类号： G06F1100

CPC分类号： H04L1/0057 ,  G11B20/14 ,  G11B20/1426 ,  G11B2020/1434 ,  G11B2020/1446 ,  H03M5/145 ,  H03M13/05 ,  H03M13/31 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/007 ,  H04L25/4908

摘要： A method and apparatus for encoding a plurality of successive m-bit binary data words to produce a plurality of successive of n-bit binary code words, where n and m are positive integers and n is greater than m, for supply to a magnetic recording channel. Each m-bit binary data word is partitioned into a plurality of blocks of bits, and at least one said blocks of bits in each m-bit binary data word is encoded in accordance with a finite-state coding scheme to produce a plurality of successive n-bit binary code words. At least one stage of violation correction which transforms the plurality of successive n-bit binary code words. Violation correction includes detecting the occurrence of any of a plurality of prohibited bit patterns at one or more predetermined locations within each n-bit binary coded word, and replacing any prohibited bit pattern so detected by a corresponding substitute bit pattern. The finite-state coding scheme, the prohibited bit patterns, and corresponding substitute bit patterns are predetermined such that in a serial bit-steam comprising the successive n-bit binary code words, the maximum number of consecutive bits of a first value is limited to a first predetermined number j, where b greater or equal to 2, and the maximum number of consecutive bits of the a second value is limited to a second predetermined number k.

摘要翻译： 一种用于编码多个连续m位二进制数据字以产生多个连续的n位二进制码字的方法和装置，其中n和m是正整数，并且n大于m，用于提供给磁记录 渠道。 每个m位二进制数据字被分割成多个位块，并且根据有限状态编码方案对每个m位二进制数据字中的至少一个所述位进行编码以产生多个连续的 n位二进制码字。 至少一级违规校正，其转换多个连续的n位二进制码字。 违规纠正包括检测在每个n位二进制编码字中的一个或多个预定位置处的多个禁止位模式中的任一个的出现，以及替换由相应的替代位模式所检测到的任何禁止位模式。 有限状态编码方案，禁止比特模式和对应的替代比特模式是预定的，使得在包括连续的n比特二进制码字的串行比特流中，将第一值的连续比特的最大数目限制为 第一预定数量j，其中b大于或等于2，并且第二值的连续比特的最大数量被限制为第二预定数量k。