What is CPRM on a DVD-RW disc?

Archived from groups: microsoft.public.windowsxp.general (More info?)

Kenny wrote:

> Just bought a 5 pack of Maxell DVD-RW's. On the pack it says
> "1-2 speed rewritable Ver 1.1 with CPRM." Nowhere on the packaging does it
> say what CPRM is.
> Only thing I thought of was copyright protection of some sort.
> Does anyone know what it means?
>
>

Google is your friend. A search on CPRM+DVD gives this first link:
http://www.disctronics.co.uk/techn [...] pyprot.htm

--
Rock
MS MVP Windows - Shell/User

Archived from groups: microsoft.public.windowsxp.general (More info?)

From Maxell site:

"What schemes does DVD-RW use for Copy Protection?
All DVD Recorders, DVD rewritable drives and their associated media can
recognize encrypted content and will not allow the coping of this material.
Just like the other rewritable formats, DVD-RW cannot be used to copy CSS
encrypted DVD movies. This guards against pure digital copies of the
original DVD video source material. DVD-RW also incorporates CPRM (Copy
Protection for Recordable Media). CPRM prevents unauthorized recording of
protected source material when using the (VR) Video Recording Format. If
allowed by CPRM, some source material may be allowed to be copied one time."
Seems a bit pointless when programs like DVD Shrink and DVD Decrypter remove
the protection before writing to DVDR.




--

Kenny Cargill


"Ken Blake" <kblake@this.is.an.invalid.domain> wrote in message
news:ekxFqv$eFHA.900@TK2MSFTNGP10.phx.gbl...
> In news:eyFh2r$eFHA.2888@TK2MSFTNGP15.phx.gbl,
> Kenny <me@privacy.net> typed:
>
>> Just bought a 5 pack of Maxell DVD-RW's. On the pack it says
>> "1-2 speed rewritable Ver 1.1 with CPRM." Nowhere on the packaging
>> does it say what CPRM is.
>> Only thing I thought of was copyright protection of some sort.
>> Does anyone know what it means?
>
>
> Content Protection for Removable Media
>
> Google provides a fast answer to almost any question like this. Try here,
> for example:
>
> http://searchstorage.techtarget.co [...] 36,00.html
>
> or http://tinyurl.com/bs922
>
> --
> Ken Blake - Microsoft MVP Windows: Shell/User
> Please reply to the newsgroup
>
>
>