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 was initially launched. It was later expanded to Channel News Asia when the channel was launched on 1 March 1999. Teletext Classifieds was shut down on 1 September 2012. On 3 September 2013, MediaCorp announced that the service will be discontinued from 30 September 2013 due to “declining usage”. Teletext was provided on three MediaCorp channels, with each channel specialising in specific types of information. Teletext on Channel 5 specialised in entertainment and lifestyle information, Classifieds on Channel 8 and business information on Channel News Asia. When the service was still online, the Teletext versions of all three channels were