Recording medium, recording method, recording apparatus, and...

Details Recording medium, recording method, recording apparatus, and... Recording medium, recording method, recording apparatus, and...

2008-07-29

2008-07-29

Moazzami, Nasser (Department: 2136)

Cryptography

Video cryptography

Copy protection or prevention

C369S047120

Reexamination Certificate

active

07406177

ABSTRACT:
A recording medium, comprising a lead-in area, a data recording area that is formed on an outer periphery side of the lead-in area and in which a plurality of pieces of content data is recorded, and a lead-out area formed on an outer periphery side of the data recording area, wherein first copyright management information and second copyright management information with which copyrights of the plurality of pieces of content data are managed are recorded at different positions whose secrecies are different from each other.

REFERENCES:
patent: 6289102 (2001-09-01), Ueda et al.
patent: 2001/0017828 (2001-08-01), Yamada
patent: 4-163768 (1992-06-01), None
patent: 9-171481 (1997-06-01), None
patent: 11-288555 (1999-10-01), None
patent: 11-296984 (1999-10-01), None
patent: 2000-196585 (2000-07-01), None

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