Method and apparatus for generating run-length limited code
    1.
    发明授权
    Method and apparatus for generating run-length limited code 失效
    用于生成游程限制代码的方法和装置

    公开(公告)号:US5812073A

    公开(公告)日:1998-09-22

    申请号:US510140

    申请日:1995-07-31

    CPC分类号: H03M5/145

    摘要: A method and an apparatus are provided for generating an (4,20) RLL modulation code having a decreased detectible window width and an increased recording density ratio. The code's spectrum is concentrated in the low-frequency band, thereby improving the signal-to-noise ratio. In addition, the hardware of an encoder and a decoder can be easily implemented since the modulation code has a fixed codeword length.

    摘要翻译: 提供了一种用于产生具有降低的可检测窗口宽度和增加的记录密度比的(4,20)RLL调制码的方法和装置。 代码的频谱集中在低频带,从而提高信噪比。 此外,编码器和解码器的硬件可以容易地实现,因为调制码具有固定的码字长度。

    Method of generating parity data based on low-density parity check matrix and apparatus therefor
    2.
    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。

    Error correction code block generating method and apparatus and optical storage medium containing error correction code block
    3.
    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。

    Demodulation apparatus and method using code table that decreases complexity
    4.
    发明授权
    Demodulation apparatus and method using code table that decreases complexity 失效
    使用代码表的解调装置和方法降低复杂度

    公开(公告)号:US07164374B2

    公开(公告)日:2007-01-16

    申请号:US11126145

    申请日:2005-05-11

    IPC分类号: H03M7/00

    CPC分类号: G11B20/10009

    摘要: A demodulation apparatus and method using a code table that decreases complexity. The demodulation apparatus includes a code table including a plurality of the code words, wherein similar ones of the code words are arranged to be grouped together; and a soft demodulator to calculate probabilities of individual bits that constitute the code words, and to generate a soft demodulation value of the data word.

    摘要翻译: 一种使用降低复杂度的代码表的解调装置和方法。 解调装置包括包含多个码字的码表,其中相似的码字被布置成被分组在一起; 以及软解调器,用于计算构成码字的各个比特的概率,并产生数据字的软解调值。

    Optical recording medium, data recording or reproducing apparatus and data recording or reproducing method used by the data recording or reproducing apparatus
    5.
    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。

    Recording medium storing link information and apparatus and method for linking data
    9.
    发明授权
    Recording medium storing link information and apparatus and method for linking data 有权
    存储链接信息的记录介质和用于链接数据的装置和方法

    公开(公告)号:US07184389B2

    公开(公告)日:2007-02-27

    申请号:US09976277

    申请日:2001-10-15

    IPC分类号: G11B7/00

    摘要: An optical recording medium storing information for regarding data in the current sector as data in a linking loss area, and an apparatus and method providing linking data. The data link method includes dividing an error correction code block having a predetermined size into a plurality of sectors and checking data type identification information which indicates whether or not data in each sector is linking data; and replacing main data of a sector with predetermined data according to the result of checking the data type identification information. According to the above method, data type information is checked to determine whether or not to replace main data of the current sector with dummy data. By doing so, error occurrence of the prior art can be prevented and block error correction is carried out more effectively.

    摘要翻译: 存储关于当前扇区中的数据的信息作为链接丢失区域中的数据的信息的光学记录介质以及提供链接数据的装置和方法。 数据链接方法包括将具有预定大小的纠错码块划分成多个扇区,并且检查指示每个扇区中的数据是否是链接数据的数据类型识别信息; 并根据检查数据类型识别信息的结果,用预定数据替换扇区的主数据。 根据上述方法,检查数据类型信息以确定是否用伪数据替换当前扇区的主数据。 通过这样做,可以防止现有技术的错误发生,并且更有效地执行块错误校正。