| 摘要 |
In this invention, a structure in which a data stream encoded into the M<2> code is cut at the boundary of its arbitrary bit cells and a unique sync pattern is inserted between the bit cells is adopted. As a result, the erroneous detection of data of the data stream modulated with the M<2> code as a sync pattern can be prevented to avoid the synchronization shift, the occurrence of the synchronization error. Further, the correct and stable synchronization can be established so as to enable reproduction of an original digital data with high fidelity. Also, by eliminating the sync pattern and connecting its data blocks before and after as they are, a data stream satisfying the rule of the code and inserting the pattern into a data stream modulated with the M<2> code. |
