| 摘要 |
PROBLEM TO BE SOLVED: To perform simultaneous broadcasting with one system of transmission means by separating a first multiplexed signal and a TV signal for digitized analog broadcasting, performing digital transmission with the first multiplexed signal, restoring the TV signal for digitized analog broadcasting to an analog signal and performing analog transmission at a transmission station. SOLUTION: The multiplexed signal to be transmitted with a digital STL 10 is separated into signals for both digital and analog broadcasting, a multiplexed signal equivalent to the multiplexed signal outputted from a multiplexer 8 is transmitted to a transmitter 14 as a signal for digital broadcasting, in addition, an analog TV signal is transmitted as a signal for analog transmission when analog broadcasting of a program from an analog TV studio master 15 is performed, an SD signal for analog broadcasting is transmitted to a D/A converter 12 when analog broadcasting of a program from an SDTV studio master 1-1 is performed respectively, a digital broadcasting signal is transmitted from the digital transmitter 14 and an analog signal is transmitted from an analog transmitter 13 by a multiplex separator 11. |
