PURPOSE: To display a newest still picture in a short time by discriminating a kind of a given picture data, storing the picture data and revising the storage state in response to the discrimination.

CONSTITUTION: A power supply 50 supplies power to a reception circuit 30, a buffer memory 32, a buffer memory control circuit 34 and a header decoder 36 at all times and supplies power via a power switch 48 to a still picture decoder 38, a frame memory 40, a frame memory control circuit 42, a D/A converter 44 and a monitor device 46. With the power switch 48 closed, the buffer memory control circuit 34 gives immediately the stored data in the buffer memory 32 to the decoder 38 and the decoder 38 decodes it and expands the result into the frame memory 40 and the still picture is displayed on the monitor device 46. Thus, it is not required to await the reception of all picture data, then the still picture is displayed on the monitor device 46 early by the time.