A data disc, on which there are recorded main text data including map data for displaying a picture, map data pointer information as pointer information for the map data, item data for retrieving the main text data, display position data indicating the display position of the item data on a...http://www.google.de/patents/US5675783?utm_source=gb-gplus-sharePatent US5675783 - CD-ROM XA data disc featuring display position data recorded thereon
