[ISDB_connected_transmission_descriptor.segment_type]
# ARIB STD-B10 table 6-80
Bits = 2
0x0 = 1 segment  (1 layer)
0x1 = 2 segments  (2 layers)
0x2 = 13 segments
0x3 = Refer to TMCC signal

[ISDB_connected_transmission_descriptor.modulation_type]
# ARIB STD-B10 table 6-81
Bits = 2
0x0 = Differential modulation
0x1 = Synchronous modulation
0x2 = Reserved for future use
0x3 = Refer to TMCC signal