Pre-recorded compact disc and copy-limit method thereof
AssigneeCMC Magnetics Corporation
InventorsChia-Chieh Chang, Hsien-Hsiang Teng, Pai-Lu Wang, Don-Yau Chiang, Huang-Sheng Liu
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Abstract
A copy-limit pre-recorded CD (Compact Disc) and a copy-limit method protect the data recorded on the pre-recorded CD from copied onto a recordable CD. The pre-recorded CD (Compact Disc) includes a data area of the pre-recorded CD and an indivisible file. The storage capacity of a data area of the recordable CD is Z. The indivisible file is stored in the data area of the pre-recorded CD and has a file size Y which approximately ranges between Z+10 MB and Z+100 MB. The copying action is prohibited to proceed when the indivisible file with a size is larger than the storage capacity of the data area of a recordable CD is determined.
Claims11
A pre-recorded CD (Compact Disc) for protecting the data recorded on the pre-recorded CD from copied onto a recordable CD, wherein the storage capacity of a data area of the recordable CD is Z, the pre-recorded CD comprising:
- a data area of the pre-recorded CD;
- and
- an indivisible file, stored in the data area of the pre-recorded CD and having a file size Y which substantially ranges between Z+10 MB and Z+100 MB.
A copy-limit method of a pre-recorded CD, for protecting the data recorded on the pre-recorded CD from copied onto a recordable CD, wherein the storage capacity of a data area of the recordable CD is Z, the method comprising:
- (a) creating an indivisible file with a file size Y which substantially ranges between Z+10 MB and Z+100 MB;
- and
- (b) recording the indivisible file onto a data area of the pre-recorded CD.
Dependencies are inferred from the claim text.