| 摘要 |
PURPOSE: A data reproducing method and apparatus, and data recording method and apparatus is provided to handle data with a reduced number of data linking blocks, record user data efficiently and read properly the recorded user data. CONSTITUTION: At the time of reading the user data, the position of a data linking block(123) is detected by making reference to the identification information, whereby excessive run-out blocks(125) which are otherwise requisite to detect the position of the data linking block are made unnecessary. At the time of data linking, a part where data in a run-in block(124) is missing is filled with correct data, thus the run-in block is correctly read, whereby the excessive run-in blocks which are otherwise be requisite are made unnecessary. A data reproducing method comprises the steps of reading the data from the data recording area of the recording medium and de-interleaving the data thus read; detecting the position of the data linking block by checking that the data is one having been written in units of the fixed length packet; and generating a reading data by removing the data linking block.
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