| 释义 |
teletext|ˈtɛlɪtɛkst|
[f. tele- 2 + text n.1]
A system in which a user's television set is adapted so as to be able to show alphanumeric information selected from displays transmitted using the spare capacity of existing television channels. Cf. oracle n.1 10; contrast viewdata.
1974Wireless World Nov. 441/1 (heading) Teletext to go ahead. 1975Electronics & Power 15 May 548/1 In March 1974, the British Radio Equipment Manufacturers' Association, BBC and IBA reached agreement on a unified standard system, known as teletext, based largely on the ceefax system. 1975,1976[see oracle n. 10]. 1980S. Money in K. G. Jackson Bk. of Video 89/2 By using the same page format and data coding, viewdata and teletext have been made compatible so that a large part of the decoder can be common for both systems. |