Abstract: Parental information of a video program recorded on an optical disk is always checked in a disk player. Even if a jump of laser beam tracing of an optical head erroneously occurs due to shocks or vibrations, the content of parental information assigned to the destination of optical head jumping is checked, to thereby achieve an accurate parental control of selective restriction for the video whose reproduction or presentation is restricted by the parental information.

Abstract: A multimedia disc made up of a video data storage region for storing a plurality of video data sequences, a management information storage region which stores management information, the management information comprising group information that shows which video data sequences have been grouped together to compose a group from reproduced, a level ID for each video data sequence in a which only one of the composing video data sequences is same group and a set of link information for each video data sequence which indicates a next video data sequence to be reproduced after completion of reproduction of a video data sequence in question, and a level map storage region for storing a separate table for each country/region, wherein each table for a country/region includes information which maps each sort level in a sorting system for the country/region to a level ID.