Machine-readable data medium having interactive reproduction procedures with menu items by a user, a reproduction apparatus and method of interacting

A reproduction apparatus for reproducing data comprising a plurality of objects, the objects including moving picture data, sub-picture data and control data to be effective within a time period in which the corresponding moving picture data is reproducible, the sub-picture data including a menu image having a plurality of items for display;

• the control data includes control information including item control data for responding to a user's operation applied to the menu image and auxiliary control data for substituting for a user's operation applied onto the menu image,
• the reproduction apparatus comprising:
• an input unit for inputting the data;
• a reproduction unit for reproducing the moving picture data and sub-picture data inputted by the input unit and outputting the moving picture data and sub-picture data as a video signal for display;
• a reception unit for receiving a user's operation applied onto the menu;
• and
• a control unit for responding to the user's operation according to the item control data and for substituting for the user's operation according to the auxiliary control data, wherein the auxiliary control data includes automatic activation item information which specifies an item to be forcedly placed into the activated state when a user's operation for placing the item into a selected state is applied.

A reproduction method for reproducing data comprising a plurality of objects, the objects including moving picture data, sub-picture data and control data to be effective within a time period in which the corresponding moving picture data is reproducible, the sub-picture data including a menu image with a plurality of items;

• and
• the control data includes control information including item control data for responding to a user's operation applied to the menu image and auxiliary control data including automatic activation item information that indicates, for each of the plurality of items, whether an item, when selected by a user's operation, should be forcedly placed into an activated state without the user's operation placing the selected item into activated state,
• the reproduction method comprising the steps of:
• reading the data;
• decoding the data to reproduce a menu image;
• receiving a user input in response to an item in the menu image;
• and
• responding to the user's operation according to the item control data and for substituting for the user's operation according to the auxiliary control data.