25. The scroll display control method according to claim 22 , wherein a number of characters displayed in a text section succeeding the target text section corresponding to the picture under reproduction is increased by automatically changing the text display setting when reproduction of the picture is slow reproduction.
25. The scroll display control method according to claim 22 , wherein a number of characters displayed in a text section succeeding the target text section corresponding to the picture under reproduction is increased by automatically changing the text display setting when reproduction of the picture is slow reproduction. 26. The scroll display control method according to claim 25 , wherein the changing of the text display setting includes at least one of changing the display reference position of the target text, changing of a text display area size indicative of a height and a width of a text display area, and changing of a display text character size indicative of a height and a width of a text character.