System, server and method for providing supplementary information service related to broadcast content

1. A system for providing a supplementary information service related to broadcast content being broadcasted to a user terminal, the system comprising;

a Time Information Creating Server for identifying start time information with respect to a start time of the broadcast content; and

a Supplementary Information Service Providing Server for receiving the start time information of the broadcast content from the Time Information Creating Server, receiving a supplemental information request, calculating an elapsed time for a specific scene based on the start time information, and providing the user terminal with supplementary information corresponding to the specific scene based on the elapsed time, through a communication network,

wherein the Supplementary Information Service Providing Server receives a supplementary information request and scene time information of the specific scene from the user terminal, and calculates the elapsed time for the specific scene based on the start time information and the scene time information of the specific scene, and

the Supplementary Information Service Providing Server further receives coordinate information from the user terminal and provides the user terminal with the supplementary information corresponding to both of the specific scene and the coordinate information.

2. The system as set forth in claim 1 , wherein the start time information includes first presentation time stamp (PTS) information corresponding to the start time of the broadcast content.

3. The system as set forth in claim 2 , wherein the scene time information of the specific scene includes second PTS information of the specific scene, and wherein the Supplementary Information Service Providing Server calculates the elapsed time based on the first PTS information corresponding to the start time and the second PTS information of the specific scene and extracts the supplementary information, the supplementary information being to be provided to the user terminal, corresponding to the elapsed time.

4. The system as set forth in claim 2 , wherein the Time Information Creating Server extracts the first PTS information from the broadcast content.

5. The system as set forth in claim 3 , wherein the start time information further includes absolute time information, and wherein the Supplementary Information Service Providing Server extracts the supplementary information, the supplementary information being to be provided to the user terminal, based on the elapsed time and the absolute time information.

6. The system as set forth in claim 3 , wherein the second PTS information is information about an image frame of the specific scene.

7. The system as set forth in claim 4 , wherein the first PTS information is extracted from a Moving Picture Experts Group Transport Stream (MPEG-TS) included in the broadcast content.

8. The system as set forth in claim 1 , wherein the Supplementary Information Service Providing Server provides the user terminal with uniform resource locator (URL) information corresponding to the supplementary information to be downloaded.

9. The system as set forth in claim 1 , wherein the broadcast content includes PTS information of the specific scene, and wherein the Supplementary Information Service Providing Server creates composition time stamp (CTS) information for synchronizing the PTS information of the specific scene with the supplementary information and provides the user terminal with the supplementary information including the CTS information.

10. The system as set forth in claim 9 , wherein the Time Information Creating Server directs the Supplementary Information Service Providing Server to create the CTS information and bidirectional data broadcasting supplementary information including the CTS information.

11. The system as set forth in claim 1 , wherein the broadcast content includes PTS information of the specific scene, and wherein the Time Information Creating Server creates CTS information for synchronizing the PTS information of the specific scene with the supplementary information and provides the Supplementary Information Service Providing Server with the CTS information, and wherein the Supplementary Information Service Providing Server provides the user terminal with the supplementary information including the CTS information.

12. The system as set forth in claim 11 , wherein the Time Information Creating Server forms bidirectional data broadcasting supplementary information including the CTS information, and

wherein the Supplementary Information Service Providing Server extracts a corresponding bidirectional data broadcasting supplementary information including the CTS information, based on the PTS information of the specific scene, and transmits the extracted bidirectional data broadcasting supplementary information to the user terminal.

13. A method for providing a supplementary information service related to broadcast content being broadcasted to a user terminal, the method comprising steps of:

identifying start time information with respect to a start time of the broadcast content;

receiving a supplemental information request;

calculating an elapsed time for a specific scene based on the start time information;

providing the user terminal with supplementary information corresponding to the specific scene based on the elapsed time, through a communication network

receiving a supplementary information request and scene time information of the specific scene from the user terminal,

wherein the elapsed time is calculated based on the start time information and the scene time information of the specific scene, and

coordinate information is further received at the step of receiving, and wherein the supplementary information corresponding to the specific scene is extracted based on both of the elapsed time and the coordinate information.

14. The method as set forth in claim 13 , further comprising a step of:

extracting the supplementary information, the supplementary information being to be provided to the user terminal, corresponding to the elapsed time calculated based on the start time information and the scene time information of the specific scene,

wherein the start time information includes first presentation time stamp (PTS) information and absolute time information, and the scene time information of the specific scene includes second PTS information of the specific scene.

15. The method set forth in claim 13 , wherein the providing of the supplementary information comprises providing the user terminal with uniform resource locator (URL) information corresponding to the supplementary information to be downloaded.

16. The method set forth in claim 13 , wherein the providing of the supplementary information comprises providing the user terminal with the supplementary information including composition time stamp (CTS) information, and

wherein the broadcast content includes PTS information of the specific scene, and the CTS information is created for synchronizing the PTS information of the specific scene with the supplementary information.