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

Steve Toth stoth at hauppauge.com
Wed Nov 23 17:13:03 CET 2005


>>> 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 
>>     
Correct.

For what it's worth, on the multiple frontend issue (not s2 related)... 
A board will appear with some or all of the following features before 
you know it. Analogue PAL, DVB-T and DVB-S on a single bridge. 
Personally, it's more logical to me two have two different frontends, 
one for S and one for T. Anything else feels like a hack.

Analogue tends to take care of itself through v4l, this probably should 
change longer term.

Steve





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