| 摘要 |
A discreet teletext subtitle line is used to notify viewers that a teletext page exists with additional information relating to a television programme. Viewers have instant access to this teletext information by pressing a single key on a remote control. A digital television receiver accepts the single key press in response to the subtitle line and automatically switches to teletext mode and displays the relevant page, without the viewer needing to enter the page number on his remote control. |
