Teletext, Subtitles and VPS for DVB - Digital Video and Audio Broadcasting Technology - page 164

case, corresponding to the VBI (vertical blanking interval) according to
DVB. As in DVB teletext, this is followed by the Data Unit Length, the
field ID and the line number in the field.

Field
parity

Line
offset

13 byte VBI data
(from data line byte 3…15)

reserved

8 8 2 1 5 104 Bit

“0xC3“=VBI data

Fig. 9.8. PES packet with VBI data

PES
data field

6 byte
header

Optional
PES
header

Data
ID
1 byte

VBI data
field

PES header

3 byte start
code prefix
0x00 0x00 0x01

Stream ID
“0xBD“

PES packet
length

PTS,
presentation
time stamp for
program
synchronization

24 8 16 Bit

Fig. 9.9. VBI data field

The data line (Fig. 9.7.) contains the following information:

• Byte 1: Run-in 10101010
• Byte 2: Start code 01011101
• Byte 3: Source ID
• Byte 4: Serial ASCII text transmission (source)
•

Byte 5: Monaural/stereo/binaural

• Byte 6: Video content ID