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
BBC Online the www.bbc.com domain name for $375,000, previously owned by Boston Business Computing, but the price of this purchase was not revealed until 6 years later. As of 2005, "www.bbcnc.org.uk" no longer exists. In 2001, BBC Online was rebranded as BBCi. the website launched on 7 November 2001. The BBCi name was conceived as an umbrella brand for all the BBC's digital interactive services across web, digital teletext, interactive TV and on mobile platforms. The use of letter "i" prefixes and suffixes to denote information technology or interactivity was very much in vogue at this time; according to the BBC, the