The amount of information provided to a user is adjusted adaptively by means of a simple method.To this end, the present invention includes delay sections 70A to 70D that each add a predetermined amount of delay to a picture whose playback speed has been converted, and output the picture to display sections 2B to 2E other than a first display section 2A of a plurality of display sections, and a playback speed converting section 60 that converts the playback speed of an input picture on the basis of a given variable, and outputs the converted playback speed to the first display section 2A and the delay sections 70A to 70D. Further, the present invention includes a gaze position judging section 40 that judges whether or not the position of a gaze detected by a gaze detecting section 3 detecting the position of the gaze of a user is on the screen of the first display section 2A, and outputs a judgment result, and a playback speed determining section 50 that determines a playback speed in accordance with the judgment result in the gaze position judging section 40, and outputs a variable according to the playback speed to a playback speed converting section 60.