Techn. minimum requirements for DVB-T2 receivers - ORS

Version 1.0 29.3.2013
The IRD shall be able to decode an ISO/IEC13818-1 [6] stream with data
rates up to 58 MBit/s.
The IRD shall be capable to utilize at least 32 elementary streams
simultaneously, which requires 32 PID filters.
The IRD shall provide at least 32 section filters.
The IRD shall support variable bit rate elementary streams within a constant
bit rate transport stream.
4.3.2 DVB Descrambler
The descrambler unit shall be based on the Common Scrambling Algorithm
(CSA) as specified by DVB, as described in DVB A 011 [1].
The IRD shall be able to evaluate the CA descriptor regardless if it is inserted
in the PMT at program level or program element level.
4.3.3 Dynamic PMT processing
The IRD shall be able to handle dynamic changes in the Program Map Table
(PMT).
A practical use case for dynamic PMT changes is for example the
requirement to support switching on and off regional variants of programs by
a broadcaster.
The IRD shall handle dynamic PMT changes in the correct manner shall be
observed:
o
o
Dynamic changes in the PMT shall not produce any disturbances in
the Audio/Video output.
In case switching of elementary audio and/or video streams is
triggered, the maximum switching time (measured from PMT update
to clear picture) shall be 3 seconds. The maximum switching time
shall be met regardless the elementary streams are scrambled or not.
It is recommended, that the video stream should freeze (freeze frame), until
the new video stream is displayed.
The IRD shall be able to handle a dynamic switchover from H.264/AVC HD
elementary stream to H.264/AVC SD elementary stream. The maximum
outage shall be below 3 seconds.
5 DECODING CAPABLITIES
15/34 © ORS