TRANSMISSION DEVICE AND RECEPTION DEVICE FOR FREQUENCY MULTIPLEX DATA TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To provide a transmission device and a reception device for frequency multiplex data transmission which effectively transmit a large amount of digital data by broadcasting or communication by using a radio transmission channel such as a satellite and the ground or a wired transmission line such as cable television. SOLUTION: Original data are obtained by separating digital data and sending them out to a transmission line after frequency multiplexing by plural digital modulating means, and putting together pieces of digital data obtained by plural selective demodulating means.