| 摘要 |
PROBLEM TO BE SOLVED: To overcome the problem that when a border is closed and finalized, or is at recordable timing, a blank area is required to be recorded by data filled with zero, and the detection of a blank area requires time, in a DVD-R of one side two layers. SOLUTION: When a reserve RZone 101a is set up, between a second layer of an inner circumference side end of an invisible RZone 102 and a second layer of a periphery side end of a reserve RZone 101a, a blank area 103a recordable only after a first layer of the reserve RZone 101a and a first layer of the invisible RZone 102 have been recorded, is produced. A system controller computes the start sector number and the end sector number of the blank area 103a to update RMD in a memory. The RMD after the updating is recorded on a management information recording area of an optical disk. Therefore, the existence and the place of the blank area can be known in a short period only by reproducing the RMD recorded on the optical disk. COPYRIGHT: (C)2006,JPO&NCIPI
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