ATSC A90 (Databroadcast) I have a pdf/doc file if you would like me to send you a copy. Johannes Stezenbach wrote: >On Tue, May 03, 2005 at 03:38:20PM -0400, Sean Devine wrote: > > >>I'm told by our resident expert that there are really only a few >>differences between the two. In ATSC one IP Datagram cannot span >>multiple DSM-CC sections, but in DVB its allowed. ATSC the table id is >>0x3f and DVB is 0x3e. The section_syntax_indicator in ATSC has to be 0, >>but in DVB we are not sure. >> >> > >For DVB MPE is specified in ETSI EN 301 192 (0x3e == DSM-CC sections with >private data). The case with fragmented datagrams is probably not >handled correctly in current dvb_net.c, but I haven't heard reports >that fragments are actually used (i.e. last_section_number != 0). >For DVB the section_syntax_indicator can be 1 (meaning there is a CRC), >or 0 (meaning there is a XOR checksum). The last case is not handled >by current dvb_net.c (i.e. the XOR checksum is not checked). > >0x3f is "ISO/IEC 13818-6 reserved". Which document specifies >ATSC usage of DSM-CC sections for MPE? > >Johannes > >_______________________________________________ > >linux-dvb@xxxxxxxxxxx >http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb > > >
