[linux-dvb] DSM-CC Synchronized Download Protocol

Rudy Zijlstra rudy at edsons.demon.nl
Wed Mar 14 19:02:26 CET 2007



On Wed, 14 Mar 2007, thomas.lagemann at stud.tu-ilmenau.de wrote:

> Zitat von timecop <timecop at gmail.com>:
>
>> DSM-CC is used a lot in ISDB-T / ISDB-S for data broadcasting and
>> firmware download.
>> Have a poke around http://www.dibeg.org/aribstd/ARIBSTD.htm
>> One of B-xx standards should cover DSM-CC related stuff. I know it
>> does because I wrote a parser for DDI and DDB messages a few months
>> ago. By the way, the stuff follows standard section table format.
>>
>> -t
>
> Theres some info about transmitting data with DSM-CC stuff in B24 Vol3, but
> still not what i was looking for. It only covers The object and data carousel,
> and a method called event message which seems to be equivalent to the DVB
> specified "do it now stream events".
>
> But i found something in the ATSC specifications. According to this the
> synchronized download protocol is used for non-flow-controled transmission of
> data in DDB messages via DSM-CC sections. Synchronisation is done by inserting
> PTS-references in the adaptation header.
> Just in case anyone cares :-)
>
> But again i found nothing about DVB having adopted this method.
>
> regards,
>
> Thomas
>

In DVB it is used for:
- firmware download
- MHEG (UK interactive TV i should perhaps say)

Cheers,

Rudy

P.S. all download specs are NDA.



More information about the linux-dvb mailing list