Analog Television - Digital Video and Audio Broadcasting Technology - page 22

Fig. 2.13. Teletext line

40 character 40 character

24
lines

24
lines

Fig. 2.14. Teletext page

The most important teletext parameters are as follows:

• Non-return-to-zero code

• Data rate: 444 • 15625 kbit/s = 6.9375 Mbit/s

• Error protection: Even parity

• Characters per line: 40

• Lines per teletext page: 24

The data line (e.g. line 16 and corresponding line in the second field,
Fig. 2.15.) is used for transmitting control information, signaling and,