Abstract
4K and 8K broadcasting is going to start on full scale. But viewing distance at home is almost far from optimal viewing distance. To experience sense of presence fully, viewer must be closer to TV set. In this paper, 4K and 8K TVs are discussed from the viewpoint of user interface based on the online questionnaire as to current status of TV viewing at home. Possibility of touch user interface is investigated with simulating experiments in order to make viewer closer to TV set. Gesture interface and voice user interface are also investigated.