Teletext and to pad out the fixed packet. The vertical caption position is determined by the packet address. In the case of the Ceefax and ORACLE systems and their successors in the UK, the teletext signal is transmitted as part of the ordinary analog TV signal but concealed from view in the Vertical Blanking Interval (VBI) television lines which do not carry picture information. The teletext signal is digitally coded as 45-byte packets, so the resulting rate is 7,175 bits per second per used lines (41 7-bit 'bytes' per line, on each of 25 frames per second). A teletext page comprises
MediaCorp Teletext MediaCorp Teletext MediaCorp Teletext was a Singaporean teletext information service provided by MediaCorp. It was carried on MediaCorp's Channel 5, Channel 8 and Channel NewsAsia. On top of the standard information carried by most teletext providers, it also carried information unique to Singapore, such as COE and ERP rates, announcements from selected ministries in Singapore and lottery results. The service was also accessible over the Internet since 1999 until its shutdown in 2013. The service was launched on Channel 5 and Channel 8 on 1 August 1983, being the first teletext service in Asia. It was called SBCText when it