PURPOSE: To configurate circuits after a TCI decoder of a MUSE decoder with analog circuits.

CONSTITUTION: A luminance signal and a color difference signal from a TCI decoder is processed by a clamp circuit 1, an inverse matrix circuit. External R, G, B signals are analogically processed by a clamp circuit 5. Each signal is selected by a changeover switch 6 to lead out a signal of one system. A signal of the other system is led out via a level adjustment circuit 7 and a matrix circuit 8.