Apparatus and method for transmitting or receiving broadcast signal
A method for transmitting a broadcast signal is disclosed. The method for transmitting a broadcast signal according to an embodiment of the present invention includes performing delivery layer processing of a broadcast service data and signaling information for the broadcast service data, performing UDP/IP encapsulation of a broadcast service data and signaling information for the broadcast service data and performing physical layer processing of a broadcast service data and signaling information for the broadcast service data.
1. A method for transmitting a broadcast signal, comprising:
generating service data of a broadcast service and service layer signaling (SLS) information signaling the service data, wherein the service data and the SLS information are encoded by using Real-Time Object Delivery over Unidirectional Transport (ROUTE) protocol;
generating service list table (SLT) information, wherein the SLT information comprises information for discovery of the SLS information; and
transmitting the broadcast signal including the service data, the SLS information and the SLT information,
wherein the service data includes streaming media data and application data, and
wherein the SLS information includes Media Presentation Description (MPD) information providing presentation description of the streaming media data and application signaling information signaling application of the application data.
2. The method of claim 1 , wherein dynamic event information is delivered via a video watermark, the dynamic event information supporting delivery of a dynamic event for the application.
3. The method of claim 2 , wherein the dynamic event information includes at least one of presentation a time information indicating presentation time of the dynamic event, duration information indicating duration of the dynamic event or ID information identifying the dynamic event.
4. The method of claim 1 , wherein media segments in the streaming media data includes event message box information signaling an event for the application, and
wherein a presence of the event message box information is indicated by InbandEventStream information in the MPD information.
5. The method of claim 4 , wherein the event message box information includes at least one of time scale information indicating reference time scale for the event, presentation time delta information indicating presentation time of the event relative to the earliest presentation time in media segment which the event message box information appears or event duration information indicating duration of the event or event ID information identifying the event.
6. The method of claim 1 , wherein the SLT information comprises URL information including URL to obtain signaling data or electronic service guide (ESG) data via broadband and URL type information indicating type of the URL, and
wherein the type of URL includes URL of signal server to obtain the signaling data and URL of ESG server to obtain the ESG data.
7. The method of claim 6 , wherein the URL information is SLT level URL information to obtain the signaling data or the ESG data for the services in the SLT information, and service level URL information to obtain the signaling data or the ESG data for a specific service in the SLT information.
8. The method of claim 1 , wherein, when the URLis a URL of the signaling server, the URL information is used with at least one additional parameter to generate HTTP request for obtaining the signaling data, and the at least one additional parameter comprises at least one of service term indicating a service to which the signaling data is applied, mode term indicating a mode of the signaling data, version term indicating a version of the signaling data, and type term indicating type of the signaling data.
9. A broadcast signal transmitter, comprising:
a memory configured to store data;
a communication unit configured to transmit and receive the broadcast signal; and
a processor configured to control the memory and the communication unit,
wherein the processor is further configured to:
generate service layer signaling (SLS) information of service data for a broadcast service, wherein the service data and the SLS information are encoded by using Real-Time Object Delivery over Unidirectional Transport (ROUTE) protocol
generate service list table (SLT) information, wherein the SLT information comprises information for discovery of the SLS information;
and
transmit the broadcast signal including the service data, the SLS information and the SLT information
wherein the service data includes streaming media data and application data, and
wherein the SLS information includes Media Presentation Description (MPD) information providing presentation description of the streaming media data and application signaling information signaling application of the application data.
10. The transmitter of claim 9 , wherein dynamic event information is delivered via a video watermark, the dynamic event information supporting delivery of a dynamic event for the application.
11. The transmitter of claim 10 , wherein the dynamic event information includes at least one of presentiona time information indicating presentation time of the dynamic event, duration information indicating duration of the dynamic event or ID information identifying the dynamic event.
12. The transmitter of claim 9 , wherein media segments in the streaming media data includes event message box information signaling an event for the application, and
wherein a presence of the event message box information is indicated by InbandEventStream information in the MPD information.
13. The transmitter of claim 12 , wherein the event message box information includes at least one of time scale information indicating reference time scale for the event, presentation time delta information indicating presentation time of the event relative to the earliest presentation time in media segment which the event message box information appears or event duration information indicating duration of the event or event ID information identifying the event.
14. The transmitter of claim 9 , wherein the SLT information comprises URL information including URL to obtain signaling data or electronic service guide (ESG) data via broadband and URL type information indicating type of the URL, and
wherein the type of URL includes URL of signal server to obtain the signaling data and URL of ESG server to obtain the ESG data.
15. The transmitter of claim 14 , wherein the URL information is SLT level URL information to obtain the signaling data or the ESG data for the services in the SLT information; and service level URL information to obtain the signaling data or the ESG data for a specific service in the SLT information.
16. The transmitter of claim 10 , wherein, when the URL is a URL of the signaling server, the URL information is used with at least one additional parameter to generate HTTP request for obtaining the signaling data, and the at least one additional parameter comprises at least one of service term indicating a service to which the signaling data is applied, mode term indicating a mode of the signaling data, version term indicating a version of the signaling data, and type term indicating type of the signaling data.