Samsung DVD-R155 - Manual (Page 36)

R
ecording
English - 36
Unrecordable Video
Videos 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 program, use a DVD-RW disc with
CPRM in VR Mode. You can also use DVD-RAM discs.
( 'O' : supported, '-' : not supported )
Signal type
Media
Copy-Free Copy-Once Copy-Never
DVD-RAM
(Ver.2.0)
O O* -
DVD-RW (Ver.1.1) O - -
DVD-RW (Ver.1.1)
with CPRM
VR mode
O O* -
DVD-R O - -
When a “Copy Once” recording has been made, 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, but not by many DVD
players. Each blank recordable DVD has a unique 64-bit media ID etched
in the BCA(Burst Cutting Area). 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.
01317A-01-R155-XAA-ENG.indb 36 01317A-01-R155-XAA-ENG.indb 36 2007-01-25 오후 4:33:38 2007-01-25 오후 4:33:38