Recording device, replay device, integrated circuit, and...

Details Recording device, replay device, integrated circuit, and... Recording device, replay device, integrated circuit, and...

2011-07-12

2011-07-12

LaForgia, Christian (Department: 2439)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C713S189000, C720S719000

Reexamination Certificate

active

07979915

ABSTRACT:
A recording device performs recording on a recording medium such as a DVD, and playback compatibility of the recording medium is increased. In circumstances such as when a standard is established after the manufacture of a playback apparatus, there are playback devices that physically cannot read information for decrypting encrypted data from a predetermined area of the recording medium due to the specifications of the playback apparatus, and therefore the playback apparatus cannot use the recording medium. In order for the recording medium to be able to be used in such a playback apparatus, the recording device reads data recorded in the predetermined area of the recording medium, and records the read data in another area that is readable by the playback apparatus.

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