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recording
UNRECORDABLE PICTURES
Pictures with copy protection cannot be recorded on this DVD Recorder & VCR.
When the DVD Recorder & VCR 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 and DVD-RAM
discs.
Media
DVD-RAM (Ver.2.0)
DVD+RW
DVD+R
DVD-RW (Ver.1.1)
DVD-RW (Ver.1.1)
with CPRM
VR mode
V mode
DVD-R
Once "Copy Once" has been recorded, recording cannot be done anymore.
* Compatible with CPRM.
❖
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 & VCR, 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.
Disc contents cannot be copied to other media.
58_ recording
Signal type
Copy-Free
O
O
O
O
O
O
O
You cannot record.
The disc is protected.
Copy-Once
Copy-Never
O*
-
-
-
O*
-
-
-
-
-
-
-
-
-
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