Error correction code block generating method and apparatus and optical storage medium containing error correction code block
    1.
    发明申请
    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:US20030126537A1

    公开(公告)日:2003-07-03

    申请号:US10335859

    申请日:2003-01-03

    IPC分类号: H03M013/00

    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 (Nnull1)th columns and from 0th to (Mnull1)th rows to form (MnullN) data blocks. A matrix block generation unit arranges the (MnullN) 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 2nullK bytes to each of N columns to form a first codeword of ((KnullM)null2nullK) bytes. A second codeword generation unit adds a second error correction check word of P bytes to each of ((KnullM)null2nullK) rows to form a second codeword of (NnullP) 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,逐个字节地处理数字数据,并将处理后的数字数据从第0到第(N-1)列和 从第0到第(M-1)行,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。

    Synchronization code recovery circuit and method
    2.
    发明申请
    Synchronization code recovery circuit and method 有权
    同步码恢复电路及方法

    公开(公告)号:US20030194036A1

    公开(公告)日:2003-10-16

    申请号:US10285678

    申请日:2002-11-01

    IPC分类号: H03M013/00 H04L007/06

    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。

    Decoding method and apparatus therefor
    3.
    发明申请
    Decoding method and apparatus therefor 有权
    解码方法及其装置

    公开(公告)号:US20030145274A1

    公开(公告)日:2003-07-31

    申请号:US10347524

    申请日:2003-01-21

    摘要: A decoding method and an apparatus operate by performing error correction on code words of an error correcting code block in one direction selected from a row direction and a column direction, indicating in error flags the remaining code words except at least some code words from code words having uncorrectable errors, and performing error correction on code words in the other direction based on the error flags. Accordingly, errors that have been conventionally considered as being uncorrectable may now be corrected.

    摘要翻译: 解码方法和装置通过对从​​行方向和列方向选择的一个方向上的纠错码块的码字执行纠错来进行操作,指示除代码字以外的至少一些码字之外的剩余码字 具有不可校正的错误,并且基于错误标志对另一方向上的码字执行纠错。 因此,现在可以校正以前被认为是不可校正的错误。