Patrick Boettcher ha scritto: > Hi Andrea, > > Andrea Venturi wrote: > >> hi, >> >> here in italy, many dvb-h trials are springing all over.. >> >> i'm wondering if there's already a dvb-h compliant (at least supporting >> 4k) demodulator available on the market, and with a linux driver ready.. > > > As far as I know, the DVB-H trials in the air are always using 8k or 2k. > I don't remember why (I just forgot it) but someone told me that there > is no real need to use 4k. > i believe, it should be the same in italy.. but i like to be "future-proof" when purchasing new stuff. > That is correct. > > 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? 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? > The DVB-H testsignal in Berlin was/is transmitted with 8K and I was > successfully using DVB-T device to receive the DVB-H signal. do you have a dump of a complete TS of such a "DVB-H like" transmission? or, maybe, someone else living in berlin (or where there are trials ongoing, in finland..) can dump a sample TS (for example 2-3 minutes) if yes, could you put it on some website and tell me? i'd like to give a quick glance to the encapsulation and the h264 encoding.. > > DVB-H is a bit more than DVB-T + 4k-mode: > > 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 anyway, thank you for you fast reply and informations andrea
