Patent ID: 7493552

Claim:
A method of reproducing data recorded on a data storage medium performed in a reproduction apparatus in which the data storage medium is loaded, the data comprising audio/video (AV) data, and mark-up documents to reproduce the AV data in an interactive mode when the mark-up documents are interpreted by a presentation engine of the reproduction apparatus, the mark-up documents comprising a plurality of mark-up documents corresponding to different parental levels, and a start-up mark-up document specifying which one of the plurality of mark-up documents corresponding to different parental levels is to be interpreted by the presentation engine depending on a parental level set in the reproduction apparatus, the method comprising: reading the start-up mark-up document from the data storage medium; identifying the parental level set in the reproduction apparatus; reading one of the plurality of mark-up documents corresponding to the different parental levels that the read start-up mark-up document specifies is to be interpreted by the presentation engine for the identified parental level set in the reproduction apparatus; interpreting the read one of the plurality of mark-up documents using the presentation engine of the reproduction apparatus to display a mark-up screen having an AV screen embedded therein; reading the AV data from the data storage medium; decoding the read AV data to reproduce the AV data; and displaying the reproduced AV data on the AV screen embedded in the mark-up screen.