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    • 1. 发明专利
    • Modulation coding and decoding method and device
    • 调制编码和解码方法和装置
    • JP2009117021A
    • 2009-05-28
    • JP2008276263
    • 2008-10-28
    • Internatl Business Mach Corp インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation
    • MITTELHOLZER THOMAS
    • G11B20/10
    • H03M5/145H03M5/20
    • PROBLEM TO BE SOLVED: To partition a stream of binary input data into two binary output streams for supply to respective modulation encoders in a modulation coding system. SOLUTION: A 4-ary enumerative encoding algorithm is applied to each of a succession of input words in the input bit-stream to produce a succession of 4-ary output symbols. The 4-ary algorithm simultaneously encodes respective j=∞ Fibonacci codes in the odd and even interleaves of the input word such that the two bit-sequences formed by respective corresponding bits of the succession of output symbols are range-limited codewords. Two binary output streams are produced by separating the two range-limited codewords generated from each successive input word. The two binary output streams are independently encoded by respective modulation encoders, and the encoder outputs interleaved to produce a modulation-constrained output stream. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:将二进制输入数据流划分为两个二进制输出流,以供应给调制编码系统中的各个调制编码器。 解决方案:4进制枚举编码算法应用于输入比特流中的一系列输入字中的每一个,以产生一系列的4元输出符号。 4进制算法同时对输入字的奇数和偶数交错中的各个j =∞斐波那契编码进行编码,使得由输出符号序列的相应对应位形成的两个比特序列是范围限制码字。 通过分离从每个连续输入字产生的两个范围限制码字来产生两个二进制输出流。 两个二进制输出流由相应的调制编码器独立地编码,并且编码器输出交织以产生调制约束的输出流。 版权所有(C)2009,JPO&INPIT