Method and apparatus for setting marks on content recorded on a recording medium and conducting operations in accordance with the marks

A method for reproducing content recorded on a recording medium, comprising:

• (a) obtaining additional navigation data for interactive playback of the content;
• (b) setting a position within the content corresponding to each mark information to a playback engine, which reproduces and decodes the content, based on one or more mark information contained in the obtained additional navigation data;
• and
• (c) performing an operation specified in the additional navigation data with respect to mark information associated with a detected position if detection of a position is notified from the playback engine in the course of playback of the content.

A method for reproducing content recorded on a recording medium, comprising:

• (a) obtaining additional navigation data for interactive playback of the content;
• (b) setting a position within the content corresponding to each mark information to a playback engine, which reproduces and decodes the content, based on one or more mark information contained in the obtained additional navigation data;
• and
• (c) changing displayed playback information of the content, if detection of a position is notified from the playback engine in the course of playback of the content.

An apparatus for reproducing content recorded on a recording medium, comprising:

• a playback unit for reading the recorded content by driving the recording medium and for decoding the read content;
• and
• a processor interpreting additional navigation data for interactive playback of the content,
• wherein the processor sets a position within the content to the playback unit based on one or more mark information contained in the additional navigation data, and performs an operation specified by the navigation data with respect to mark information associated with a detected position if detection of the set position is notified from the playback unit.

The apparatus for reproducing content recorded on a recording medium, comprising:

• a control unit controlling a playback unit which reads the recorded content by driving the recording-medium and decodes the read content;
• and
• a processor interpreting additional navigation data for interactive playback of the content and setting a position within the content to the playback unit according to each mark information, based on one or more mark information contained in the additional navigation data,
• wherein the control unit changes displayed playback information of the content during playback of the content when detection of the set position is notified from the playback unit.