BROADCAST TRANSMISSION SYSTEM, TRANSMITTER, AND BROADCAST TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To enable viewing of broadcast when using a low bandwidth wired transmission line.;SOLUTION: When receiving an HD resolution digital broadcast signal via an antenna 40, a transmitter 10 demodulates the HD resolution digital broadcast signal to obtain an HD resolution video signal, and degrades resolution corresponding to the HD resolution video signal to obtain an SD resolution video signal, an NTSC video signal, and an H.264 video signal. Next, the transmitter 10 modulates the SD resolution video signal, the NTSC video signal, and the H.264 video signal to obtain an SD resolution digital broadcast signal, an analog broadcast signal, and a one-segment broadcast signal, and transmits the SD resolution digital broadcast signal, the analog broadcast signal, and the one-segment broadcast signal via a telephone line.;COPYRIGHT: (C)2012,JPO&INPIT