| 摘要 |
A method of reproducing digital signals recorded on a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format as the n data blocks. n block addresses are assigned to the n data blocks. Information identifying an area on the disk in which the n data blocks is recorded is assigned to the n data blocks. m data blocks (0<m<n) are recorded on the first recording surface, and remaining (n-m) data blocks are recorded on the second recording surface. The lead-in block is recorded at the head of the data frame, and includes recording area identifying information identifying an area on the disk in which the lead-in block is recorded, and disk information identifying (1) a number of recording surfaces, (2) the block address of one of the m data blocks recorded last on the first recording surface, and (3) the block address of a last one of the n data blocks in the data frame. The method includes the steps of detecting and reproducing the lead-in block using the recording area identification included in the lead-in block, detecting the disk information included in the lead-in block, accessing and reproducing the data blocks, detecting the block addresses of the data blocks, and controlling the accessing and reproducing step based on the detected disk information and the detected block addresses.
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