Recording medium having data structure for managing main data additional content data thereof and recording and reproducing methods and apparatuses

An apparatus for recording a data structure for managing additional content data thereof on a recording medium, comprising:

• an optical pickup configured to record data on the recording medium;
• an encoder configured to encode main data and/or additional content data of the main data;
• and
• a controller configured to control the optical pickup to record the encoded data as at least one clip file in a data area on the recording medium and to record, in a navigation area on the recording medium, a clip information file and a playlist file, the playlist file being provided for reproduction paths of the clip files, the clip information file including at least two information, a first information to indicate whether the clip file includes additional content data and a second information to indicate parental level of additional content data in case that additional content data is included in the clip file, the first information is written in a clip stream extension type field allocated in the clip information file, the playlist file including information indicating a playback time information of the clip file, and the playlist file is written in an extension type field different from the clip stream extension type field.

A method for reproducing a data structure for managing additional content data recorded on a recording medium, comprising:

• reproducing a clip information file and a playlist file from the recording medium, the clip information file is associated with a clip file, the clip file including main data and/or additional content data of the main data, the playlist file being provided for reproduction paths of the clip files, and the clip information file including at least two information;
• and
• examining a first information to determine whether the clip file includes additional content data, the first information is written in a clip stream extension type field allocated in the clip information file, and making presentation of the additional data included in the clip file, if included,
• wherein a second information is to indicate parental level of additional content data in case that additional content data is included in the clip file, the playlist file including information indicating a playback time information of the clip file, and the playlist file is written in an extension type field different from the clip stream extension type field.

An apparatus for reproducing a data structure for managing additional content data recorded on a recording medium, comprising:

• an optical pickup configured to reproduce data recorded on the recording medium;
• a decoder configured to present or interpret the reproduced data;
• and
• a controller configured to control the optical pickup to reproduce a clip information file and a playlist file from the recording medium, the clip information file is associated with a clip file, the clip file Including main data and/or additional content data of the main data, the playlist file being provided for reproduction paths of the clip files, the clip information file including at least two information, the controller configured to examine first information written in the clip information file to determine whether the clip file includes additional content data, the first information is written in a clip stream extension type field allocated in the clip information file, and control the decoder to present the additional data included in the clip file, if included,
• wherein a second information is to indicate parental level of additional content data in case that additional content data is included in the clip file, the playlist file including information indicating a playback time information of the clip file, and the playlist file is written in an extension type field different from the clip stream extension type field.