Patrick Boettcher ha scritto: > Hi, > > Andrea Venturi wrote: > >>> The DiB7000 was at first just used for DVB-H and currently DiBcom is >>> also using this demod for DVB-T devices (because power consumption is >>> lower with this design and there is also the DiB7700 and DiB7710 which >>> is demod and USB/PCI bridge in one chip - devices are really small). >> >> >> so this kind of DVB-T card are not actually supported by the linux >> driver? > > > Yes. Afaik, the dib7000 is not register compatible with the dib3000, so > there has to be another new demod-driver for that. > >> anyway, are there DVB-T devices ALREADY on the market using DiB7000, in >> the enanced 4K version, or they are just the old 2k-8k only version? > > > Just for reference designs for OEMs I think. DVB-T won't use 4k FFT. As > far as I can see from now, as soon as the first dib7000-device will hit > the market, a linux-driver for that will be ready... - Problem then will > be if the silicon-tuner-manufacturer wants to reveal information about > that (see current problem with Microtune and their MT2060). > >> do you have a dump of a complete TS of such a "DVB-H like" transmission? > > > No, sorry. i just see this presentation from t-systems about the berlin trial. http://www.ipdc-forum.org/resources/documents/9-T-SystemsDVB-HPilotBerlin.pdf in slide 6, they show the technical detail. it's a 8K > >>> The main differences/additions (from memory): >>> >>> - every data transmitted with DVB-H is encapsulated in IPv6 MPE sections >>> - a sophisticated RS FEC is used for error correction of the >>> MPE-sections >>> - 4k-mode >>> >> >> yes, i read somewhere, and there's the sychronization stuff etc.., but i >> was oversimplyfing just to give an idea > > > Yeah, right, I forgot the time-slicing, which is used to save battery on > devices. time-slicing was used for the test-signal in Berlin - so every > 2 seconds I saw bursts of data coming in on different PIDs. > > Patrick. > > _______________________________________________ > > linux-dvb@xxxxxxxxxxx > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb >
