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    • 4. 发明申请
    • METHOD OF JOINT DECODING OF POSSIBLY MUTILATED CODE WORDS
    • 联合解释可能的浮动代码字的方法
    • WO2003077247A2
    • 2003-09-18
    • PCT/IB2003/000583
    • 2003-02-14
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.HEKSTRA, Andries, P.BAGGEN, Constant, P., M., J.TOLHUIZEN, Ludovicus, M., G., M.
    • HEKSTRA, Andries, P.BAGGEN, Constant, P., M., J.TOLHUIZEN, Ludovicus, M., G., M.
    • G11B20/00
    • H03M13/37G11B20/18
    • The invention relates to a method of decoding possibly multilated code words (r) of a code (C), wherein an information word (m) and an address word (a) are encoded into a code word (c) of said code (C) using a generator matrix (G) and wherein said address words (a) are selected such that address words (a) having a known relationship are assigned to consecutive code words (c). To provide a reliable way of decoding making use of the known relationship, a method comprising the following steps is proposed: decoding the differences (D) of a number (L-1) of pairs of possibly mutilated code words (rib, ri+1) to obtain estimates (u, v) for the differences of the corresponding pairs of code words (ci, ci+1), combining said estimates (u, v) to obtain a number (L) of at least two corrupted versions (wj) of a particular code word (c), forming a code vector (z) from said number (L) of corrupted versions (wj) of said particular code word (c) in each coordinate, decoding said code vector (z) to a decoded code word (c') in said code (C), and- using said generator matrix (G) to obtain the information word (m) and the address word (a) embedded in said decoded code word (c').
    • 本发明涉及一种解码码(C)的可能多个码字(r)的方法,其中信息字(m)和地址字(a)被编码成所述码(C)的码字(c) ),并且其中所述地址字(a)被选择为使得具有已知关系的地址字(a)被分配给连续码字(c)。 为了提供使用已知关系的可靠的解码方法,提出了一种包括以下步骤的方法:对可能残缺的码字对(rib,ri + 1)的数目(L-1)的数目(L-1) )以获得对应的代码字对(ci,ci + 1)的差的估计(u,v),将所述估计(u,v)组合以获得至少两个损坏版本(wj)的数目(L) ),从每个坐标中的所述特定码字(c)的损坏版本(wj)的所述数目(L)形成码矢量(z),将所述码矢量(z)解码为 (C)中的解码码字(c'),以及 - 使用所述生成矩阵(G)获得嵌入在所述解码码字(c')中的信息字(m)和地址字(a)。