Transmission device, transmission method, reception device, and reception method

Patent metadata

Field	Value
Publication number	US-2021058680-A1
Application number	US-202017093248-A
Country	US
Kind code	A1
Filing date	Nov 9, 2020
Priority date	Nov 26, 2014
Publication date	Feb 25, 2021
Grant date	—

Abstract

A technique capable of allowing a reception side to easily select components is provided. A transport stream in which a first transport packet including predetermined components and a second transport packet including signaling information related to the predetermined components are time-division multiplexed is transmitted via a predetermined transport path. Component selection information is inserted in the second transport packet. The component selection information includes information on a selective layer in which static selection is performed, information on a composite layer in which composition is performed, and information on an adaptive layer in which dynamic switching is performed, and these layers being arranged in that order from top to bottom. The acquisition destination information of a component which is a target of adaptive switching among the components selectable in the adaptive layer is information that designates specific information location of a metafile having data stream acquisition information for adaptive streaming.

First claim

1 . A reception device comprising:
receiving circuitry configured to:
receive a broadcast stream including a broadcast component and broadcast signaling information related to the broadcast component via a broadcast transport path, wherein the broadcast stream is transmitted using a Moving Picture Expert Group (MPEG) Media Transport (MMT) protocol, and the broadcast signaling information includes a Media Presentation Description (MPD) file having a hierarchical structure, the MPD file being a metafile for acquiring an MPEG-Dynamic Adaptive Streaming over Hypertext transfer protocol (DASH)-base data stream; and
control circuitry configured to:
output a user interface configured to select a component based on the broadcast signaling information,
acquire, in response to a selection corresponding to a broadband component based on the user interface, a data stream including the broadband component corresponding to the broadcast component via a broadband transport path based on information conveyed by the hierarchical structure of the MPD file, and
output the broadcast component and the broadband component for presentation.

2 . The reception device according to claim 1 , wherein
the hierarchical structure of the MPD file includes at least a period structure, the period structure having information on data of video or audio, an adaptation set structure included in the period structure, the adaptation set structure grouping a stream selection range.

3 . The reception device according to claim 1 , wherein the broadcast component and the broadcast signaling information are included in at least one MMT packet.

4 . The reception device according to claim 1 , wherein the MPD file is delivered by a signaling message included in the broadcast signaling information.

5 . The reception device according to claim 1 , wherein the broadcast component and the broadband component are processed in three layers comprising a selective layer in which static selection is performed, a composite layer in which composition is performed, and an adaptive layer in which dynamic switching is performed, the three layers being arranged in that order from top to bottom.

6 . The reception device according to claim 5 , wherein the broadcast component and the broadband component are processed based on component selection information included in the broadcast signaling information.

7 . The reception device according to claim 6 , wherein
the component selection information, which includes information on each of components selectable in the adaptive layer, includes acquisition destination information, the acquisition destination information of a component, which is a target of adaptive switching among the components selectable in the adaptive layer, is information that designates specific information location of the MPD file having the hierarchical structure for adaptive streaming, and the control circuitry is further configured to select components to be presented based on the component selection information.

8 . The reception device according to claim 1 , wherein the broadcast signaling information includes information associating an adaptation set of the MPD file, which corresponds to the broadband component, with the broadcast component.

9 . The reception device according to claim 1 , wherein the MPD file is acquired by MPD file location information included in the broadcast signaling information.

10 . The reception device according to claim 1 , wherein the broadcast signaling information includes a first signaling message which associates an adaptation set of the MPD file with the broadcast component and a second signaling message which is used to acquire the MPD file.

11 . The reception device according to claim 1 , wherein the broadcast component and the broadband component are a part of a same content.

12 . The reception device according to claim 1 , wherein the user interface includes information for selection of an audio language from a plurality of audio languages based on the broadcast signaling information.

13 . The reception device according to claim 12 , the user interface includes a dropdown menu configured to select an audio language from the plurality of audio languages.

14 . The reception device according to claim 1 , wherein the user interface includes information for selection of one group of video and audio from a plurality of groups of video and audio.

15 . The reception device according to claim 14 , wherein video or audio included in at least one of the plurality of groups of video and audio is coded by scalable coding so that a base portion of the video or audio is transmitted via the broadcast transport path and an extended portion of the video or audio is transmitted via the broadband transport path.

16 . The reception device according to claim 1 , wherein the user interface includes information for selection of a caption from a plurality of captions based on the broadcast signaling information.

17 . A reception method comprising:
receiving, by receiving circuitry, a broadcast stream including a broadcast component and broadcast signaling information related to the broadcast component via a broadcast transport path, wherein the broadcast stream is transmitted using a Moving Picture Expert Group (MPEG) Media Transport (MMT) protocol, and the broadcast signaling information includes a Media Presentation Description (MPD) file having a hierarchical structure, the MPD file being a metafile for acquiring an MPEG-Dynamic Adaptive Streaming over Hypertext transfer protocol (DASH)-base data stream;
outputting, by control circuitry, a user interface configured to select a component based on the broadcast signaling information;
acquiring, by the control circuitry, a data stream including a broadband component corresponding to the broadcast component via a broadband transport path based on information conveyed by the hierarchical structure of the MPD file, in response to a selection corresponding to the broadband component based on the user interface; and
outputting, by the control circuitry, the broadcast component and the broadband component for presentation.

18 . The reception method according to claim 17 , wherein the hierarchical structure of the MPD file includes at least a period structure, the period structure having information on data of video or audio, an adaptation set structure included in the period structure, the adaptation set structure grouping a stream selection range

19 . The reception method according to claim 17 , the user interface includes information for selection of an audio language from a plurality of audio languages based on the broadcast signaling information.

20 . The reception method according to claim 17 , wherein the broadcast signaling information includes information associating an adaptation set of the MPD file, which corresponds to the broadband component, with the broadcast component.

Assignees

• Sony Corp

Inventors

• Kitazato Naohisa
• Yamagishi Yasuaki
• Kitahara Jun

Classifications

• H04N21/4858 Primary

  for modifying screen layout parameters, e.g. fonts, size of the windows · CPC title

• H04N5/76 Primary

  Television signal recording · CPC title

• H04N21/2343 Primary

  involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)} · CPC title

• H04N21/2353

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

• H04N21/4402

  involving reformatting operations of video signals for household redistribution, storage or real-time display {(details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764)} · CPC title