Method for enhancing D.C. suppressed modulation and/or demodulation run-length limited code
A technology of runlength limitation and runlength, which is applied in the field of modulation and demodulation of DC components, and can solve the problems of small number of codewords and inability to effectively realize DC suppression control, etc.
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[0034] A method of generating run length limited (RLL) code sets applied to the present invention is shown in FIGS. 3A and 3B. First, in step S101, input required minimum run length d, maximum run length k, data bit length m, code word bit length n, main conversion code group distinguishing parameter x, code word duplication parameter y, and specific bit bit ( i), bit(j) and bit(k). Here, the required minimum run length d is 1, the maximum run length k is 8, the data bit length m is 8, the code word bit length n is 12, the main conversion code group distinguishing parameter x is 1, and the code word replication parameter y is 3.
[0035] In step S102, generate 2 that satisfies the condition input in step S101 n codewords 0 to 2 n -1 (212 here). It is determined in step S103 whether the generated codeword satisfies the run length condition (d, k). In step S104, among the generated codewords, codewords that do not satisfy the runlength condition (d, k) are discarded because...
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