Hi, On Tue, 22 Nov 2005, Felix Domke wrote: > A final question was how to support DVB-H. Is DVB-H totally backward > compatible to DVB-T? (ignoring the 4k mode, of course, but that could be > added backward-compatible to DVB-T) Do we want to support that power > management features, if yes, how? A new dvb_dvbh_parameters, based on > the _ofdm-one, with some added fields? I never did anything DVB-H > related, so please excuse my ignorance. To be sure, I would have to talk to the DVB-H Hardware guys, but afaik the DiBcom DVB-H silicon is more than just a demodulator supporting 4k and time-slicing (and the associated power-management) in hardware, but is also doing the MPE-decapsulation and RS-FEC and the data delivered to the OS is pure IP(v6). The rest (ESG, Multicast-joins etc.) is done in hardware. There is a DVB-T mode and in this mode of course the MPEG2-TS is delivered but then it is purely DVB-T. I can imagine an embedded DVB-H solution running linux as OS and in this case the demodulator could be programmed using the linux-DVB API. But I have no idea yet which other frontend-operations would make sense then nor which parameters should be added for that. In DVB-H the TPS (known from DVB-T) is extended to provide information about e.g. time-slicing as well. As the dvb_ofdm_parameters reflecting (a part of) the TPS data maybe dvbh_parameters should reflect the TPS as defined for DVB-H. Just a few thoughts of mine, Patrick. -- Mail: patrick.boettcher@xxxxxxx WWW: http://www.wi-bw.tfh-wildau.de/~pboettch/
