| 摘要 |
PROBLEM TO BE SOLVED: To provide a recording/reproducing device, which is capable of recording additional information without hindering information data from being recorded and a recording/reproducing method. SOLUTION: This recording/reproducing device which records or reproduces the information data into an optical disk 20, in which the information data are recordably formatted, by an optical pick up 17 and a magnetic head is provided with a RAM 11, which is capable of storing the information data and its additional information into respectively independent storing regions, a memory control circuit 10, which stores additional information into the RAM 11 even during the recording of the information data into the optical disk 20, and records the additional information into the optical disk 20 during the non- recording of the information data into the optical disk 20, and a microcomputer 13. Consequently, the additional information is recorded into the optical disk 20 without hindering the information data from being recorded.
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