| 摘要 |
PURPOSE:To execute correction, without newly employing a master disk, by recording information to be corrected or added at the addressed sector by providing the address of a recordable area to a gap part provided at the begin ning or end of fixed information. CONSTITUTION:When there are the information to be corrected or added in a sector A of read only area 1 and these information area stored to a sector B of a recordable area 2, the address of the sector B in the area 2 is stored to a gap in front or back of the sector A. When the disk is irradiated with laser beam and the information recorded in the read only area 1 are reproduced, a laser head moves to the track of the sector B in the area 2 immediately after the laser beam detects the address stored in the gap of the sector A. Then, the information are reproduced and the laser head moves again to the track of the sector A in the area 1. Afterwards, the information following the sector A are reproduced. |
