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
Teletext Ltd. findings, the service would cease broadcasting most of its services on analogue and digital television, with the exception of the commercial services broadcast on Freeview channels 101-107 such as Teletext Holidays and the firm's profitable travel websites in January 2010, with the switch off date subsequently brought forward to 14 December 2009 (Sky Digital) and 15 December 2009 (analogue TV, Freesat and Freeview). Teletext's news and information service were removed from: ITV, Channel 4 and Five on analogue TV; ITV and Channel 4 on Sky Digital; ITV, Channel 4 and channel 100 on Freeview; editorial on Teletext Extra on Freeview;