TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, AND RECEPTION METHOD

• US 20170325000A1
• Filed: 11/09/2015
• Published: 11/09/2017
• Est. Priority Date: 11/26/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: KITAZATO, NAOHISA, YAMAGISHI, YASUAKI, KITAHARA, JUN
• Granted Patent: US 10,869,099 B2
• Time in Patent Office: Days
• CPC Class Codes: H04J 3/00 Time-division multiplex systems H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q
• CPC Class Codes: H04L 65/75 Media network packet handling
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/440236 by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text
• CPC Class Codes: H04N 21/4856 for language selection, e.g. for the menu or subtitles
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 5/76 Television signal recording

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.

Claims

1. A transmission device comprising:

a transport stream generator that generates 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;

a transmission unit that transmits the transport stream via a predetermined transport path; and

an information inserter that inserts component selection information to the second transport packet, wherein

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, these layers being arranged in that order from top to bottom,

information on each component selectable in the adaptive layer includes acquisition destination information, and

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.

2. The transmission device according to claim 1, wherein

the transport packet is an MMT packet, and

the component selection information is included in an MPT.

3. The transmission device according to claim 2, wherein

the data stream for the adaptive streaming is an MPEG-DASH-base data stream,

the metafile is an MPD file, and

information that designates the specific information location of the metafile is information that designates a specific adaptation set or a specific representation.

4. The transmission device according to claim 1, wherein

the predetermined transport path is a broadcast transport path.

5. A transmission method comprising:

a transport stream generation step of generating 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;

a transmission step of transmitting the transport stream via a predetermined transport path by the transmission unit; and

an information insertion step of inserting component selection information to the second transport packet, wherein

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, these layers being arranged in that order from top to bottom,

information on each component selectable in the adaptive layer includes acquisition destination information, and

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.

6. A reception device comprising:

a reception unit that receives 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 via a predetermined transport path, wherein

component selection information is inserted to 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, these layers being arranged in that order from top to bottom,

information on each component selectable in the adaptive layer includes acquisition destination information, and

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,

the reception device further comprising a component selector that selects components to be presented on the basis of the component selection information.

7. The reception device according to claim 6, further comprising a metafile acquirer that acquires the metafile.

8. The reception device according to claim 6, wherein

the component selector displays a selection graphics user interface on a screen when the component selection information includes variations related to a specific attribute to be selected by the user.

9. The reception device according to claim 6, wherein

the transport packet is an MMT packet, and

selection information of the components is included in an MPT.

10. The reception device according to claim 9, wherein

the data stream for the adaptive streaming is an MPEG-DASH-base data stream,

the metafile is an MPD file, and

information that designates the specific information location of the metafile is information that designates a specific adaptation set or a specific representation.

11. The reception device according to claim 6, wherein

the predetermined transport path is a broadcast transport path.

12. A reception method comprising:

a reception step of receiving 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 via a predetermined transport path by the reception unit, wherein

component selection information is inserted to 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, these layers being arranged in that order from top to bottom,

information on each component selectable in the adaptive layer includes acquisition destination information, and

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,

the reception method further comprising a component selection step of selecting components to be presented on the basis of the component selection information.