| 摘要 |
<p>The present invention relates to a data processing device and a data processing method that can improve the robustness of data against errors. An LDPC encoder (115) performs encoding with one of LDPC codes having a code length of 4320 bits and one of four encoding rates of 1/2, 7/12, 2/3, or 3/4. The parity-check matrix (H) for each LDPC code has a structure in which elements with the value 1 in the information matrix of the parity-check matrix (H) are arranged in cycles of 72 columns in the column direction, the information matrix being determined by a parity-check-matrix initial-value table that indicates the positions of the elements with the value 1 in the information matrix in cycles of 72 columns, the information matrix corresponding to the information length which is a function of the code length and the encoding rate. The parity-check-matrix initial-value table is, for example, designed for digital broadcasting for mobile terminals. The present invention is applicable to LDPC encoding.</p> |
