APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING BROADCAST SIGNAL

• US 20180063598A1
• Filed: 03/07/2016
• Published: 03/01/2018
• Est. Priority Date: 03/08/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KWAK, Minsung, MOON, Kyoungsoo, HONG, Sungryong, KO, Woosuk, LEE, Jangwon, KWON, Woosuk
• Granted Patent: US 10,721,538 B2
• Time in Patent Office: Days
• CPC Class Codes: H04H 60/07 characterised by processes or methods for the generation
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 65/40 Support for services or applications
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 69/323 in the physical layer [OSI layer 1]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/236 Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/242 Synchronization processes, e.g. processing of PCR [Program Clock References] arrangements for synchronising broadcast or distribution via plural systems in broadcast distribution systems H04H20/18
• CPC Class Codes: H04N 21/27 Server based end-user applications
• CPC Class Codes: H04N 21/4302 Content synchronisation processes, e.g. decoder synchronisation
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/462 Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• CPC Class Codes: H04N 21/6437 Real-time Transport Protocol [RTP]
• CPC Class Codes: H04N 21/858 Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot

Abstract

A method for transmitting a broadcast signal according to an embodiment of the present invention comprises generating service layer signaling information for discovering and obtaining a broadcast service and a content component of the broadcast service; generating service list information including information for service list building and discovery of the service layer signaling information; and physical layer processing of the service list information, the service layer signaling information, and the content component,

Claims

1. A method for transmitting a broadcast signal, comprising:

encoding a content component of a broadcast service according to a delivery protocol, wherein the delivery protocol includes at least one of ROUTE (Real-Time Object Delivery over Unidirectional Transport) protocol or MMT (MPEG Media Transport) protocol;

generating SLS (Service Layer Signaling) information for discovering and obtaining the broadcast service and a content component of the broadcast service;

generating service list information including information for service list building and discovery of the SLS information; and

physical layer processing of the service list information, the SLS information, and the content component, wherein the SLS information is transmitted by using at least one delivery protocol of the ROUTE protocol or MMT protocol,

wherein the service list information includes SLS protocol type information, and the SLS protocol type information indicates the delivery protocol of the SLS information used by corresponding broadcast service, the delivery protocol corresponding to the ROUTE protocol or the MMT protocol.

2. The method of claim 1, wherein the service list information includes first URL signaling information indicating a URL from which an ESG or a service layer signaling file for the all services in the service list information is obtained and second URL signaling information indicating a URL at which an ESG or a service layer signaling file for the specific broadcast service is obtained,

wherein each of the first URL signaling information and the second URL information includes URL type information indicating the URL is a URL of signaling server or a URL of ESG server.

3. The method of claim 1, wherein, if the content component of a service is a streaming component, the content component is transmitted by using one delivery protocol of the ROUTE protocol or the MMT protocol.

4. The method of claim 1, wherein, if the SLS information is transmitted according to the ROUTE protocol, the SLS information includes USBD (User Service Bundle Description) information, S-TSID (Service-based Transport Session Instance Description) information, and MPD (Media Presentation Description) information;

and

wherein the USBD information corresponds to an entry point of an SLS fragment;

the S-TSID information includes ROUTE session information in which the content component of the broadcast service is delivered; and

the MPD information provides context of an identified resource within MP (Media Presentation) and a resource identifier of a segment.

5. The method of claim 1,

wherein the service layer signaling information is stored as a signaling template, and

when a signaling instance which changes the service signaling information is generated, Diff information is generated transmitted, the Diff information being a difference between the template and the signaling instance.

6. The method of claim 1, wherein the service list information includes service category information about the broadcast service, and the service category information indicates whether the broadcast service is an audio/video service, audio service, app-based service, or service-guide service.

7. The method of claim 1, wherein, if a frequency band in which a broadcast signal including the service list information, SLS information, and content component is transmitted is shared with a plurality of broadcasters, the service list information further comprises service group information about a group of services provided by the respective broadcasters.

8. An apparatus for transmitting a broadcast signal, comprising:

a broadcast content encoder encoding a content component of a broadcast service according to a delivery protocol, wherein the delivery protocol includes at least one of ROUTE (Real-Time Object Delivery over Unidirectional Transport) protocol or MMT (MPEG Media Transport) protocol;

a signaling processor generating signaling information about a broadcast service; and

a physical layer processor performing physical layer processing of the content component and signaling information,

wherein the signaling information includes SLS (Service Layer Signaling) information for discovering and obtaining the broadcast service and the content component of the broadcast service and service list information for service list building and discovery of the SLS information,

wherein the SLS information is transmitted by using at least one delivery protocol of the ROUTE protocol or MMT protocol, and

wherein the service list information includes SLS protocol type information, and the SLS protocol type information indicates the delivery protocol of the SLS information used by corresponding broadcast service, the delivery protocol corresponding to the ROUTE protocol or the MMT protocol.

9. The apparatus of claim 8, wherein the service list information includes first URL signaling information indicating a URL from which an ESG or a service layer signaling file for the all services in the service list information is obtained and second URL signaling information indicating a URL at which an ESG or a service layer signaling file for the specific broadcast service is obtained,

wherein each of the first URL signaling information and the second URL information includes URL type information indicating the URL is a URL of signaling server or a URL of ESG server.

10. The apparatus of claim 8, wherein, if the content component of a service is a streaming component, the content component is transmitted by using one delivery protocol of the ROUTE protocol or the MMT protocol.

11. The apparatus of claim 8, wherein, if the SLS information is transmitted according to the ROUTE protocol, the SLS information includes USBD (User Service Bundle Description) information, S-TSID (Service-based Transport Session Instance Description) information, and MPD (Media Presentation Description) information;

and

Wherein the USBD information corresponds to an entry point of an SLS fragment;

the S-TSID information includes ROUTE session information in which the content component of the broadcast service is delivered; and

the MPD information provides context of an identified resource within MP (Media Presentation) and a resource identifier of a segment.

12. The apparatus of claim 8,

wherein the service layer signaling information is stored as a signaling template, and

when a signaling instance which changes the service signaling information is generated, Diff information is generated transmitted, the Diff information being a difference between the template and the signaling instance.

13. The apparatus of claim 8, wherein the service list information includes service category information about the broadcast service, and the service category information indicates whether the broadcast service is an audio/video service, audio service, app-based service, or service-guide service.

14. The apparatus of claim 8, wherein, if a frequency band in which a broadcast signal including the service list information, SLS information, and content component is transmitted is shared with a plurality of broadcasters, the service list information further comprises service group information about a group of services provided by the respective broadcasters.