An apparatus discriminates a color format. The signal processing paths separate
a luminance signal and a color signal from a broadcasting signal based on a plurality
of color formats. The direct signal path provides a direct output of the broadcasting
signal without separating the luminance signal and the color signal therefrom.
The relay device selectively relays the broadcasting signal as input to any one
of the respective signal processing paths and the direct signal path. The detection
device detects color format variation of the broadcasting signal based on an output
signal from the signal processing paths. The discrimination device discriminates
the color format of the broadcasting signal based on the broadcasting signal as
input through the direct signal path. The control device controls the relay device
to relay the broadcasting signal to the direct signal path when color format variation
is detected by the detection device.