Digital Signal Processing Reference
In-Depth Information
TS Header
The TS header is provided at the beginning of each TS packet and has a
length of four bytes. The TS header always begins with the sync byte
0x47. Further important elements are the PID and the continuity counter.
The TS header must never be scrambled when it is to be transmitted (see
Conditional Access).
TS Packet
The transport stream is transmitted in packets of 188 bytes (204 bytes
after channel coding). The first four bytes form the TS header which is fol-
lowed by the 184 payload bytes.
Vestigial Sideband Modulation (VSB)
The vestigial sideband amplitude modulation method is used in ATSC
systems. For terrestrial transmission, 8VSB with 8 amplitude levels is used
while 16VSB is mainly for cable transmission.
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