Patent ID: 7653288

Claim:
A method of reproducing audio/video data from an information storage medium in an interactive mode, by a reproducing apparatus, the method comprising: reading profile information from the information storage medium, the profile information indicating a version number of a markup language or a program language that is used to make ENAV files constituting interactive data to be used in the interactive mode; comparing the profile information with player profile information of the reproducing apparatus indicating a range of version numbers of interactive data supported by the reproducing apparatus; determining whether the interactive data supported by the reproducing apparatus exists in the information storage medium by determining whether interactive data that is manufactured with a version number that has a value of N or less exists in the information storage medium when a value of a version number of the player profile information of the reproducing apparatus is N, where N is an integer; selecting and reading one interactive data among interactive data that are manufactured with the version number that have the value of N or less; and interpreting and executing the read interactive data.