Broadcast receiver and 3D video data processing method

1. A three dimensional (3D) video data processing method for use in a broadcast receiver, the method comprising:

receiving a broadcast signal including three dimensional (3D) video data, a screen size table including screen size information, a pixel interval table including pixel interval information, and a viewing distance table including viewing distance information;

storing the screen size table, the pixel interval table, and the viewing distance table;

extracting a SEI (Supplemental Enhancement Information) message of the 3D video data from the broadcast signal,

wherein the SEI message includes screen size mapping table information linking to the screen size table, first parameter information indicating a first index number applied to the screen size table, pixel interval mapping table information linking to the pixel interval table, second parameter information indicating a second index number applied to the pixel interval table, viewing distance mapping table information linking to the viewing distance table, and third parameter information indicating a third index number applied to the viewing distance table,

wherein the screen size table includes first index number information having a same value as the first index number and the screen size information specifying a value of an intended screen size corresponding to the first index number information,

wherein the pixel interval table includes second index number information having a same value as the second index number and the pixel interval information specifying a value of an intended pixel interval between pixels corresponding to the second index number information in the intended screen size, and

wherein the viewing distance table includes third index number information having a same value as the third index number and the viewing distance information specifying a value of an intended viewing distance corresponding to the third index number information; and

controlling an output of the 3D video data using at least one of the screen size information, the pixel interval information, and the viewing distance information,

wherein the screen size table, the pixel interval table, and the viewing distance table are stored in advance of extracting the SEI message, and

wherein at least the screen size table or the pixel interval table or the viewing distance table is structured into a form of a table including:

table data type information indicating which one of the screen size information, the pixel interval information, and the viewing distance information are contained in the table,

index number information indicating the first index number information or the second index number information or the third index number information according to the table data type information, and

converted actual information indicating an actual screen size or an actual pixel interval or an actual viewing distance that is mapped to the index number information according to the table data type information.

2. The method of claim 1 , wherein the 3D video data includes left view video data and right view video data.

3. The method of claim 2 , wherein the controlling of the output of the 3D video data using at least one of the screen size information, the pixel interval information, and the viewing distance information includes:

horizontally shifting at least one of the left view video data and the right view video data; and

outputting at least one of the shifted left view video data and the shifted right view video data.

4. The method of claim 2 , wherein the controlling of the output of the 3D video data using at least one of the screen size information, the pixel interval information, and the viewing distance information includes:

scaling depth values contained in a depth map related to the 3D video data; and

outputting the scaled 3D video data result.

5. A broadcast receiver comprising:

a receiving unit for receiving a broadcast signal including three dimensional (3D) video data and a screen size table including screen size information, a pixel interval table including pixel interval information, and a viewing distance table including viewing distance information;

a storage for storing the screen size table, the pixel interval table, and the viewing distance table;

an information extractor for extracting a SEI (Supplemental Enhancement Information) message of the 3D video data from the broadcast signal,

wherein the SEI message includes screen size mapping table information linking to the screen size table, first parameter information indicating a first index number applied to the screen size table, pixel interval mapping table information linking to the pixel interval table, second parameter information indicating a second index number applied to the pixel interval table, viewing distance mapping table information linking to the viewing distance table, and third parameter information indicating a third index number applied to the viewing distance table,

wherein the screen size table includes first index number information having a same value as the first index number, and the screen size information specifying a value of an intended screen size corresponding to the first index number information,

wherein the pixel interval table includes second index number information having a same value as the second index number and the pixel interval information specifying a value of an intended pixel interval between pixels corresponding to the second index number information in the intended screen size, and

wherein the viewing distance table includes third index number information having a same value as the third index number and the viewing distance information specifying a value of an intended viewing distance corresponding to the third index number information; and

a three dimensional (3D) video processor for controlling an output of the 3D video data using at least one of the screen size information, the pixel interval information, and the viewing distance information,

wherein the screen size table, the pixel interval table, and the viewing distance table are stored in advance of extracting the SEI message, and

wherein at least the screen size table or the pixel interval table or the viewing distance table is structured into a form of a table including:

table data type information indicating which one of the screen size information, the pixel interval information, and the viewing distance information are contained in the table,

index number information indicating the first index number information or the second index number information or the third index number information according to the table data type information, and

converted actual information indicating an actual screen size or an actual pixel interval or an actual viewing distance that is mapped to the index number information according to the table data type information.

6. The broadcast receiver of claim 5 , wherein the 3D video data includes left view video data and right view video data.

7. The broadcast receiver of claim 6 , wherein the 3D video processor further:

horizontally shifts at least one of the left view video data and the right view video data; and

outputs at least one of the shifted left view video data and the shifted right view video data.

8. The broadcast receiver of claim 6 , wherein the 3D video processor further:

scales depth values contained in a depth map related to the 3D video data; and

outputs the scaled 3D video data result.