Broadcast system for transmitting video text pages to public

摘要

The system for allowing the wider public to receive images organised into pages of text uses a 'Videotext' server (1) which is connected to a radio transmitter transmitting on a characteristic wavelength (lambda). This wavelength is such as to lie in the range from 88 - 108 MHz and operates with frequency modulation (2). The transmitter is connected to an aerial (3). Reception of the information is achieved by a receiver (4) which is connected by a link cable (5) to a display terminal such as a 'Minitel' device (6). The type of modulation used may be different in different frequency bands, whilst the receiver may also be of an alternative type.