23. The scroll display control method according to claim 22 , wherein a number of characters displayed in the target text section is increased by automatically changing the text display setting when reproduction of the picture is either fast-forward reproduction of at least two-time fast-forward reproduction or rewind reproduction.
23. The scroll display control method according to claim 22 , wherein a number of characters displayed in the target text section is increased by automatically changing the text display setting when reproduction of the picture is either fast-forward reproduction of at least two-time fast-forward reproduction or rewind reproduction. 24. The scroll display control method according to claim 23 , 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.