Optical disk and optical recording apparatus for said disk
AssigneeHitachi, Ltd.
InventorHarukazu Miyamoto
Life of this patent
Estimating the term…
Abstract
An optical disc drive system can process both a rewritable optical disc having a plurality of data recording unit areas freely rewritable and an optical disc with a data protection function having the same format as the rewritable optical disc and having a different address data size to limit data rewrite and data write-once. The optical disc with the data protection function has address data different from that used by an optical disc drive system without the erroneous read/write and erase protection function. Even if a data protection function is introduced to an already existing optical disc drive system, an already existing optical disc drive system without the data protection function will not destroy data on an optical disc with the data protection function.
Claims14
An optical disc drive system capable of processing both a rewritable optical disc having a plurality of data recording unit areas freely rewritable and an optical disc with a data protection function having the same format as the rewritable optical disc and having a different range of address data to limit data rewrite or data write-once,
- wherein said optical disc drive system does not execute a write operation to said optical disc with said data protection when finalization data is recorded.
An optical disc with a data protection function, having a same physical format as a standard optical disc and a different range of address data assigned to a plurality of data recording unit areas from the standard optical disc, the standard optical disc having a plurality of unrewritable address data and the data recording unit areas identified by the address data and being freely rewritable,
- wherein when finalization data is recorded in said optical disc with said data protection function, said finalization data prevents a write operation from being executed.
Dependencies are inferred from the claim text.