Data transmission systems

Details Data transmission systems Data transmission systems

H - Electricity

04

M

379/4

H04M 11/06 (2006.01) G09G 1/00 (2006.01)

Patent

CA 1168773

ABSTRACT IMPROVEMENTS IN OR RELATING TO DATA TRANSMISSION SYSTEMS A data transmission of the videotex type in which coded information can be transmitted from a central information store to a plurality of terminals. The coded information includes groups of bits representing characters and groups of bits representing control codes. In the transmission technique used in the system a character attribute can be represented by a display control code which is transmitted in association with a cursor backspace code. By using this technique characters of different attributes can be displayed without a space being required between the characters on the display.

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