From: "Gavin Hamill" <[EMAIL PROTECTED]> > So it would seem that using a DVB-T card on a DVB-C network may require > bypassing the COFDM section of the signal processing. I'm guessing there > may also be an issue with voltage across the input provided by the cable > company that would not exist on a standard rooftop aerial...
Simply put: NO, it is not possible to receive DVB-C with a DVB-T demodulator and vice versa. Even if you _could_ disable the COFDM section and the inner Viterbi FEC of a DVB-T demodulator (which you typically can NOT do anyway), there'd still be the limited selection of supported modulation types and especially symbol rates. I would expect, though, that in the not-to-distant future there might be "hybrid" demodulator chips which can receive both DVB-Cable and DVB-Terrestrial. Internally, they could share only the ADC and the remaining digital signal processing would be separated. Considering that conventional analog TV sets were able to receive both terrestrial and cable, customers would expect that future digital TV sets allow the same... >From a technical point of view, I don't think there would be any problem in merging existing DVB-C and DVB-T cores. It might just be too expensive at the moment - but building hybrid receivers with separate DVB-C and DVB-T demodulators would be even more expensive, that's why I'd expect a demand for hybrid demodulators to arise. Regards, -- Robert Schlabbach e-mail: [EMAIL PROTECTED] Berlin, Germany -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
