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KiwiRes

38 posts

Geek


  #200267 9-Mar-2009 23:52

I got the DW-8022 HDMI DVB-S/T combo. As I've found out, unfortunately Normal 0 false false false EN-NZ X-NONE X-NONE MicrosoftInternetExplorer4 the DVB-T is MPEG-2 only and not compatible with NZ FreeviewHD. They e-mailed me to say that the new HDX9100 is MPEG-4 Combo SAT and Terrestrial. Oh, well. The Sat works OK with the PVR so I still ended up with a good deal.



reslfj
1 post

Wannabe Geek


#200945 13-Mar-2009 07:36
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Deev8:
KiwiRes: Is one standard more open that the other, or next generation-proofed?
In those terms, New Zealand has chosen next generation standards for our DVB-T system. 

On the negative side we can't use DVB-T receivers or hard disk PVRs produced for say the Australian or the British markets, and we have to put up with the teething troubles of boxes manufactured for a leading edge technology.


The new UK  DVB-T2/MPEG-4 STB's and IDTV's will work nicely with  DVB-T, DVB-T2, MPEG-2 and MPEG-4.

New AU firmware will be needed for the 7 MHz channel raster and VHF may need to be enabled.

NZ will - I guess - not change to DVB-T2 any time soon as MPEG-4 is already in use.
 
AU could, however, benefit much from migrating to MPEG-4  and of course at the same time all new STB's IDTV's should change to using DVB-T2.    The initial price for a DVB-T2/MPEG-4 STB is expected to be £100 or less incl VAT.

DVB-T2 does not only provide 50+% higher bit-rate ( 65-70% in a SFN environment), but it also provides more robust signals in fading channels or when impulse noise is present.  DVB-T2  is a much better technology.

One interesting new development expected to be published next  week by the dvb.org is the brand new DVB-C2 standard for cable TV.

This standard will use the modulation (CODFM), FEC (LDPC/BCH) and other features used in DVB-T2. (Note: with very different parameters)

It is believed  that single chips can be made, that will support both DVB-T2 and DVB-C2  using the same 'on chip' circuits.  They will just need  to be loaded with different  parameters during the tuning phase.
Lars Smile       

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