[linux-dvb] DVB-S2 and other (new) modulation standards

Marcel Siegert mws at linuxtv.org
Wed Nov 23 15:07:30 CET 2005

hi klaus,
> I thought that when (if?) these new PC DVB cards come
> out, they would be able to receive both DVB-S _and_ DVB-S2.
> So from VDR's point of view this would just be one single
> device and the device would decide, depending on the parameters
> given to it when tuning, which method it actually is.
as different tuning parameters are needed, how to decide when structures/ioctls
do keep backwards compatibility?
> Of course the current method used to distinguish the device
> types in VDR (FE_QPSK = DVB-S, FE_QAM = DVB-C and FE_OFDM = DVB-T)
> wouldn't work any more, so other criteria might be necessary.
> But basically a DVB-S device would be just one single device
> (with only one single frontend), whether it can only do the
> "old" DVB-S, or both DVB-S and DVB-S2.
> At least that's how I would hope this would behave in the future.
afaik dvb-s2 is backwards compatible to dvb-s 
have a look at my mail some minutes ago, there's an example
for a _maybe_ solution - also to keep old versions of vdr/neutrino/enigma/whatever working.


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