Error correction code block generating method and apparatus and optical storage medium containing error correction code block
    2.
    发明授权
    Error correction code block generating method and apparatus and optical storage medium containing error correction code block 失效
    纠错码块生成方法和装置以及含有纠错码块的光存储介质

    公开(公告)号:US07174496B2

    公开(公告)日:2007-02-06

    申请号:US10335859

    申请日:2003-01-03

    IPC分类号: G11C29/00 H03M13/00

    摘要: An apparatus, method, and an optical storage medium to generate an error correction block include a data block generation unit processing digital data on a byte-by-byte basis and arranging the processed digital data from 0th to (N−1)th columns and from 0th to (M−1)th rows to form (M×N) data blocks. A matrix block generation unit arranges the (M×N) data blocks in K rows according to a data transmission sequence to form a matrix block. A first codeword generation unit adds a first error correction check word of 2×K bytes to each of N columns to form a first codeword of ((K×M)+2×K) bytes. A second codeword generation unit adds a second error correction check word of P bytes to each of ((K×M)+2×K) rows to form a second codeword of (N+P) bytes.

    摘要翻译: 用于产生纠错块的装置,方法和光学存储介质包括数据块生成单元,以逐个字节为基础处理数字数据,并将处理后的数字数据从0 排列到 (N-1)列和从0 到(M-1)个第行以形成(M×N)个数据块。 矩阵块生成单元根据数据发送序列将(M×N)个数据块排列成K行,形成矩阵块。 第一码字生成单元向N列中的每一个添加2K字节的第一纠错校验字,以形成((KxM)+ 2xK)字节的第一码字。 第二码字生成单元向((K×M)+ 2xK)行中的每一个添加P字节的第二纠错校验字,以形成(N + P)字节的第二码字。

    Optical recording medium, data recording or reproducing apparatus and data recording or reproducing method used by the data recording or reproducing apparatus
    3.
    发明授权
    Optical recording medium, data recording or reproducing apparatus and data recording or reproducing method used by the data recording or reproducing apparatus 有权
    光记录介质,数据记录或重放装置以及由数据记录或再现装置使用的数据记录或再现方法

    公开(公告)号:US07159165B2

    公开(公告)日:2007-01-02

    申请号:US10022826

    申请日:2001-12-20

    IPC分类号: G11C29/00 H03M13/00

    CPC分类号: G11B20/12 G11B20/1866

    摘要: An optical recording medium, a data recording or reproducing apparatus, and a data recording or reproducing method used by the data recording or reproducing apparatus. In a method of recording data on an optical disc, each of a plurality of error correction code (ECC) blocks is divided into a plurality of partitions. Next, data from the partitions is interleaved so that each of the ECC blocks is alternately and equally selected to generate a recording block. The generated recording block is modulated and recorded on an optical disc. As a result, the optical recording medium, the data recording apparatus, and the data recording method used by the apparatus are compatible with the format of a conventional digital versatile disc (DVD) and have higher error correction rates. In a reproducing method, the recording block is deinterleaved.

    摘要翻译: 光记录介质,数据记录或再现装置以及由数据记录或再现装置使用的数据记录或再现方法。 在光盘上记录数据的方法中,多个纠错码(ECC)块中的每一个被分成多个分区。 接下来,来自分区的数据被交织,使得每个ECC块被交替地和等同地选择以产生记录块。 所生成的记录块被调制并记录在光盘上。 结果,该装置使用的光记录介质,数据记录装置和数据记录方法与常规数字通用盘(DVD)的格式兼容,并具有更高的纠错率。 在再现方法中,记录块被解交织。

    Synchronization code recovery circuit and method
    6.
    发明授权
    Synchronization code recovery circuit and method 有权
    同步码恢复电路及方法

    公开(公告)号:US06774826B2

    公开(公告)日:2004-08-10

    申请号:US10285678

    申请日:2002-11-01

    IPC分类号: H03M900

    摘要: A circuit which recovers a synchronization code, and a method thereof. Where a synchronization code is not detected from an incoming bitstream, a plurality of synchronization code recovery candidate patterns are compared with an original synchronization pattern, and location data to produce an optimal synchronization pattern is determined and generated on the basis of a result of the comparison. The synchronization code is recovered to a location corresponding to the location data. Alternatively, where a synchronization code is not detected from an incoming bitstream, a plurality of synchronization code recovery candidate patterns are error-corrected, and location data to produce an optimal synchronization pattern is determined and generated on the basis of a result of the error correction. The synchronization code is recovered to a location corresponding to the location data. Accordingly, a damaged synchronization code can be recovered by inserting a synchronization code to a more accurate location, further increasing the reliability of data.

    摘要翻译: 恢复同步码的电路及其方法。 在没有从输入比特流检测到同步代码的情况下,将多个同步码恢复候选模式与原始同步模式进行比较,并且基于比较结果来确定和生成用于产生最佳同步模式的位置数据 。 将同步代码恢复到与位置​​数据相对应的位置。 或者,在不从输入比特流检测到同步代码的情况下,多个同步码恢复候选模式被纠错,并且基于纠错的结果来确定和生成产生最佳同步模式的位置数据 。 将同步代码恢复到与位置​​数据相对应的位置。 因此,可以通过将同步码插入更准确的位置来进一步增加数据的可靠性来恢复损坏的同步码。

    Method and apparatus for generating parity information for error correction
    7.
    发明授权
    Method and apparatus for generating parity information for error correction 失效
    用于产生用于纠错的奇偶校验信息的方法和装置

    公开(公告)号:US07243286B2

    公开(公告)日:2007-07-10

    申请号:US10738203

    申请日:2003-12-18

    IPC分类号: H03M13/13

    CPC分类号: H03M13/1182

    摘要: A method of generating error correction parity information using a parity check matrix having m rows and n columns, wherein m is a number of parity bits and n is a number of codeword bits, wherein a same fixed number of elements in each of the rows has a value of 1 and all remaining elements in each of the rows has a value of 0, and wherein a same fixed number of elements in each of the columns has a value of 1 and all remaining elements in each of the columns has a value of 0, the error correction method including generating a lower triangular matrix in 1st through k-th rows and (n−m+1)-th through (n−m+k)-th columns of the parity check matrix by performing row and column permutations on the parity check matrix, wherein k

    摘要翻译: 一种使用具有m行和n列的奇偶校验矩阵产生纠错奇偶校验信息的方法,其中m是奇偶校验位数,n是码字比特的数目,其中每行中相同固定数量的元素具有 值为1,并且每行中的所有剩余元素的值为0,并且其中每个列中的相同固定数量的元素具有值1,并且每个列中的所有剩余元素的值为 0,所述纠错方法包括通过执行行和列来生成奇偶校验矩阵的第1至第k行和第(n-m + 1)至(n-m + k)列中的下三角矩阵 奇偶校验矩阵的排列,其中k

    Soft demodulation method and apparatus
    9.
    发明授权
    Soft demodulation method and apparatus 失效
    软解调方法及装置

    公开(公告)号:US07369615B2

    公开(公告)日:2008-05-06

    申请号:US10763381

    申请日:2004-01-26

    IPC分类号: H04B14/06

    摘要: A soft demodulation method and apparatus including calculating partial sums for a unit of each predetermined number of bits of a codeword received from a channel; calculating a value of each entry of the decoding table by referring to the partial sums; and detecting a maximum among values of all entries of the decoding table and calculating a log-likelihood ratio (LLR) using the detected maximum. Accordingly, it is possible to reduce the amount of computation required to perform a soft demodulation process using run-length limited (RLL) codes and to simplify the soft demodulation process.

    摘要翻译: 一种软解调方法和装置,包括对从信道接收的码字的每个预定位数的单位计算部分和; 通过参考部分和来计算解码表的每个条目的值; 并且检测解码表的所有条目的值中的最大值,并使用检测到的最大值来计算对数似然比(LLR)。 因此,可以减少使用游程长度限制(RLL)码进行软解调处理所需的计算量并简化软解调处理。

    Method of generating parity data based on low-density parity check matrix and apparatus therefor
    10.
    发明授权
    Method of generating parity data based on low-density parity check matrix and apparatus therefor 失效
    基于低密度奇偶校验矩阵生成奇偶校验数据的方法及其设备

    公开(公告)号:US07278082B2

    公开(公告)日:2007-10-02

    申请号:US10765278

    申请日:2004-01-28

    IPC分类号: H03M13/00

    CPC分类号: H03M13/1182

    摘要: A method of generating parity data based on a low-density panty check matrix and an apparatus therefor, the method including: reordering columns of the parity check matrix based on elements in each column having values of one to generate a reordered parity check matrix; determining a cross-point between a diagonal line of a parity matrix part in the parity check matrix and a reordered diagonal line defined by a first entry of an element having a value of one in each column of the reordered parity check matrix; and performing column permutations on the reordered parity check matrix on the basis of positions of elements having a value of one in rows above a horizontal line that passes through the cross-point to generate a triangular matrix, thus reducing the computations required to generate parity data, thereby efficiently obtaining the parity data.

    摘要翻译: 一种基于低密度内裤校验矩阵产生奇偶校验数据的方法及其装置,所述方法包括:基于每列中具有值1的元素重新排列奇偶校验矩阵的列,以生成重新排序的奇偶校验矩阵; 确定所述奇偶校验矩阵中的奇偶校验矩阵部分的对角线与由所述重新排序的奇偶校验矩阵的每列中具有值1的元素的第一条目所定义的重排序的对角线之间的交叉点; 并且基于经过交叉点的水平线上的一行的值为1的元素的位置,在重新排序的奇偶校验矩阵上执行列排列,从而减少生成奇偶校验数据所需的计算 从而有效地获得奇偶校验数据。