[Mp4-tech] how does MPEGJ support MPEG-4 IPMP or control over Descrambler

[Vishy Swaminathan]

Mrukant,
According to MPEG-4 Systems Architecture, MPEG-J streams are decoded by 
an "MPEG-J decoder" just like other elementary streams. The decoded 
streams are MPEGlets that are executed on the terminal to control the 
scene, network, decoders or terminal behaviour.  IPMP defines control 
points for all streams/decoders including MPEG-J. MPEG-J has no access 
to descramblers, decryptors or conditional access modules at the client 
side. In other words, MPEG-J does not control IPMP components.
Hope that helps.
Regards,
Vishy
MRUKANT POPAT wrote:
> hi,
> 
> I was just looking at MPEGJ implementation & Architecture.
> But I could not find how MPEGJ supports MPEG-4 IPMP.
> MPEGJ gives ability to have control on decoding process.
> Could you please give me any pointers as to how does it support MPEG-4
> IPMP or provides facility to access or control Descramble/Decryptor or
> Conditional Access module at Client Side (STB)
> 
> regards,
> MRUKANT
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Viswanathan (Vishy) Swaminathan
Sun Microsystems Inc.
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email:vishy sun.com, viswanathan.swaminathan sun.com
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