| 摘要 |
PROBLEM TO BE SOLVED: To prevent wrong reproduced data from being transferred to a host device, when a reproducing head such as an optical pickup moves to an adjacent track due to vibrations, impact, etc. SOLUTION: Sector address information is read from the header of a reproduction sector and stored in a register (ST2 and ST4). Data (including parity for error correction) are read from the data part of the reproduction sector and are subjected to demodulation processing and error correction processing, and the data that have been subjected to error correction are stored in a buffer (ST5 to ST9). The sector address information of subsequent sectors is read and stored in the register (ST10 to ST12). Whether there is continuity between the sector address information of the reproduction sector and that of the subsequent sectors is decided (ST13), and only when there is continuity, are the data of the reproduction sector existing in the buffer made transferable to the host device (host) (ST14). Thus, wrong data can be prevented from being transferred to the host device, when a reproducing head, such as the optical pickup, moves to an adjacent track due to vibrations, impact, etc.
|
