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English - 63
Unrecordable pictures
Video with copy protection cannot be recorded on this DVD Recorder.
When the DVD Recorder receives a copy- guard signal while recording,
recording stops and the following message appears on the screen.
Concerning Copy Control Signals
TV broadcasts that contain copy control signals may have one of the
following three signal types, Copy-Free, Copy-Once and Copy-Never. If you
want to record a copy-once type programme, use DVD-RW with CPRM in
VR Mode.
Signal type
Media
Copy-Free
Copy-Once
Copy-Never
DVD-RW(Ver.1.1)
O
–
–
DVD-RW(Ver.1.1)
with CPRM
VR mode
V mode
O
O
O*
–
–
DVD-R
O
–
DVD-RAM(Ver.2.0)
O
O*
–
Once “Copy Once” has been recorded, recording cannot be done anymore.
Content Protection for Recordable Media (CPRM)
CPRM is a mechanism that ties a recording to the media on which it is
recorded. It is supported by some DVD Recorders, but not by many DVD
players. Each blank recordable DVD has a unique 64-bit media ID etched
in the BCA. When protected content is recorded onto the disc, it can be
encrypted with a 56-bit C2 (Cryptomeria) cipher derived from the media
ID.
During playback, the ID is read from the BCA and used to generate a key
to decrypt the contents of the disc. If the contents of the disc are copied
to other media, the ID will be absent or wrong and the data will not be
decryptable.
◆
You cannot record copy protected movie.
01452A-SR150M-XEU-ENG-60~94.indd63 63
01452A-SR150M-XEU-ENG-60~94.indd63 63
2007-06-25 오후 1:48:07
2007-06-25 오후 1:48:07
