Alan wrote:
> I assume my topfield HD will be out of date with these proposed 
> changes?

Ant replied:
> You'll need to retune, but the services you currently get on Freeview 
> should still be available.  Think of Freeview + as an optional 
> upgrade.

To which Alun wrote:
> I meant in terms of the HD element if they are changing the spec?  If
there is a
> decryption requirement I doubt the Topfield will have it?

I would say you're right, your box wont' receive HD freeview signals.
But that's not (only) because of any encryption, it's because the spec
for encoding HD over freeview [1] was only agreed last week and the
first box was announced five days ago, to be released "in the first half
of 2010":

http://www.broadbandtvnews.com/2009/09/12/pace-unveils-dvb-t2-freeview-h
d-box/ 

I guess you have this box [2]:

http://www.topfield.co.uk/index.php?option=com_content&view=article&id=1
0&catid=2&Itemid=3

It uses "HDMI upscaling" to work with your HD TV. But it's not actually
processing the real freeview HD signal and never can -- your box needs
different chips to be able to do that. So to actually see Freeview HD in
HD, you will need to buy a new box :-(

HTH,

Brendan.
[1] known as DVB-T2. The DVB are the standards committee for most TV
standards in Europe, India, Australia etc. The BBC is a member. DVB-T
was the standard for regular freeview, so DVB-T2 is the standard for
next-gen freeview: the "T" is for terrestrial. You can guess that DVB-C
is for cable and DVB-S is for satellite... They also have C2 and S2
standards for HD over those platforms.
[2] URL edited for brevity -- yes it was much longer than that before --
but it seems to work...

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