Apparatus and method for transmitting broadcast content based on ATSC 3.0, and apparatus and method for receiving broadcast content based ATSC 3.0

Patent metadata

Field	Value
Publication number	US-11368730-B2
Application number	US-202017004318-A
Country	US
Kind code	B2
Filing date	Aug 27, 2020
Priority date	Aug 27, 2019
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

A broadcast content transmission method includes checking input of moving caption data, configuring signaling information of the moving caption data based on signaling and description defined in a broadcast service system, configuring broadcast content data, into which the signaling information of the moving caption data is inserted, and transmitting the broadcast content data, into which the signaling information of the moving caption data is inserted.

First claim

What is claimed is:

1. A broadcast content transmission method comprising:
checking input of moving caption data;
configuring signaling information of the moving caption data based on signaling and description defined in a broadcast service system;
configuring broadcast content data, into which the signaling information of the moving caption data is inserted; and
transmitting the broadcast content data, into which the signaling information of the moving caption data is inserted,
wherein the configuring of the signaling information of the moving caption data comprises:
containing information on a moving image caption in a div element; and
containing a text caption element ittm:altText to replace reproduction of the image caption as a sub-element of the div element.

2. The broadcast content transmission method of claim 1 , wherein the configuring of the signaling information of the moving caption data comprises containing moving caption attribute information in a media presentation description (MPD) element based on a Real-time Object Delivery over Unidirectional Transport (ROUTE) protocol.

3. The broadcast content transmission method of claim 2 , wherein the containing of the moving caption attribute information in the MPD element comprises containing an indicator indicating a text caption or a moving image caption in a profile attribute included in the MPD element.

4. The broadcast content transmission method of claim 1 , wherein the configuring of the signaling information of the moving caption data comprises containing an indicator indicating a moving image caption using an element defining a basepattern in a user service bundle description (USBD) based on a Real-time Object Delivery over Unidirectional Transport (ROUTE) protocol.

5. The broadcast content transmission method of claim 4 , wherein the element defining the basepattern is provided in an element broadcastAppService defining information on transmission of a broadcast service.

6. The broadcast content transmission method of claim 1 , wherein the configuring of the signaling information of the moving caption data comprises containing an indicator indicating a moving image caption using an element defining content information in a user service bundle description (USBD) based on an MPEG media transport protocol (MMTP).

7. The broadcast content transmission method of claim 6 ,
wherein the element defining the content information in the USBD includes an element ComponentRole for setting a role of a component, and
wherein the element ComponentRole for setting the role of the component contains an indicator indicating a “basic” role or an indicator indicating a “special effect” role.

8. The broadcast content transmission method of claim 7 ,
wherein the element defining the content information in the USBD includes an element ComponentType for setting a type of a component caption, and
wherein the element ComponentType for setting the type of the component caption contains at least one of an indicator indicating “video”, an indicator indicating “audio” or an indicator indicating “caption”.

9. The broadcast content transmission method of claim 8 , wherein the configuring of the signaling information of the moving caption data comprises:
configuring the element ComponentType for setting the type of the component caption as the indicator indicating “caption”; and
configuring the element ComponentRole for setting the role of the component as the indicator indicating the “special effect” role.

10. The broadcast content transmission method of claim 1 , wherein the configuring of the signaling information of the moving caption data comprises containing moving caption attribute information in a media presentation description (MPD) element based on an MPEG media transport protocol (MMTP).

11. The broadcast content transmission method of claim 10 , further comprising setting a profile element contained in the MPD element as an indicator indicating an image profile.

12. The broadcast content transmission method of claim 11 ,
wherein the configuring of the signaling information of the moving caption data comprises configuring Caption_asset_descriptor, and
wherein the Caption asset descriptor is contained in atsc3 message content which is a payload of mmt_atsc3_message.

13. The broadcast content transmission method of claim 12 , wherein information on transmission of Caption_asset_descriptor is contained in the atsc3_message_content by controlling a value of an atsc3_message_content_type element.

14. The broadcast content transmission method of claim 1 , wherein the configuring of the signaling information of the moving caption data comprises containing an element Emotion indicating a type of an emotional expression as the sub-element of the div element.

Assignees

• Electronics & Telecommunications Res Inst
• Found Res & Business Seoul Nat Univ Sci & Tech

Inventors

• Kim Sung Hoon
• Ahn Chung Hyun
• Kim Dong Ho
• Seo Bong Seok
• Hyun Chang Jong

Classifications

• H04N21/23614 Primary

  Multiplexing of additional data and video streams (arrangements for simultaneous broadcast of plural pieces of information H04H20/28) · CPC title

• H04N21/6112

  involving terrestrial transmission, e.g. DVB-T · CPC title

• H04N21/64322

  IP · CPC title

• H04N21/4884

  for displaying subtitles · CPC title

• H04N21/2353 Primary

  specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata · CPC title