On 08/11/2012 01:12 AM, Mauro Carvalho Chehab wrote:
Em 13-07-2012 20:15, CrazyCat escreveu:
#define DTV_ISDBS_TS_ID 42
#define DTV_DVBT2_PLP_ID 43
+#define DTV_DVBS2_MIS_ID 43
It would be better to define it as:
#define DTV_DVBS2_MIS_ID DTV_DVBT2_PLP_ID
Even better, we should instead find a better name that would cover both
DVB-T2 and DVB-S2 program ID fields, like:
#define DTV_DVB_MULT 43
#define DTV_DVBT2_PLP_ID DTV_DVB_MULT
And use the new symbol for both DVB-S2 and DVB-T2, deprecating the
legacy symbol.
Also DTV_ISDBS_TS_ID means same. All these three DTV_ISDBS_TS_ID,
DTV_DVBT2_PLP_ID and DTV_DVBS2_MIS_ID are same thing - just named
differently between standards. I vote for common name TS ID (I have said
that already enough many times...).
Research paper [1] ISDB-S says:
"
New technologies like the trellis-coded 8PSK (TC8PSK) modulation scheme
were adopted for this section to improve transmission capacity as much
as possible and to enable multiple transport streams (TSs) to be handled
by one carrier. This channel coding system has consequently become a
system standard known for its flexibility and extendibility.
"
"
It enables multiple MPEG-TSs to be transmitted with one transponder, and
because transmission systems can be switched for each TS signal, it
enables TS signals produced by each broadcaster to be transmitted
independently.
"
[1] http://www.tijbc.com/pruebas-7419/I0782925.pdf
regards
Antti
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