Hybrid transmission method through MMT packet format extension

Patent metadata

Field	Value
Publication number	US-9544641-B2
Application number	US-201314395748-A
Country	US
Kind code	B2
Filing date	May 5, 2013
Priority date	May 10, 2012
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

Disclosed is a method for hybrid transmission over a broadcast network and a broadband network, comprising the steps of: providing information on the broadcast content relating to a first content during the viewing the first content of the broadband network; and, if the related broadcast content is selected, providing the related broadcast content to a user over the broadcast network. The user may receive the broadcast content corresponding to relevant specific content over the broadcast network and view the received broadcast content during the viewing of specific VOD content in the broadcast network.

First claim

What is claimed is:

1. A hybrid transmission method which uses heterogeneous network including at least one of a broadcast network or a broadband network, the hybrid transmission method comprising:
transmitting an MPEG Multimedia Transport (MMT) packet of a first content through the heterogeneous network,
wherein the transmitting the MMT packet of the first content further comprises:
generating media processing unit (MPU) by encapsulating media fragment unit (MFU) being smaller than an access unit (AU) and contained data processed by a media decoder, the MPU being a container for independently decodable timed or non-timed data;
generating an MMT asset based on at least one MPU, the MMT asset being a logical grouping of MPUs that share the same asset ID;
generating MMT package including at least one MMT asset, the composition information (CI) and transport characteristics (TC); and
generating MMT packet by adding an MMT packet header to MMT payload generated by referring to the MMT package,

wherein the composition information comprises information on spatial and temporal relationship among the MMT assets, and
the MPU comprises an MMT hint track including information on converting the encapsulated MPU into the MMT payload and MMT packet, and
wherein the MMT hint track provides hint for extracting and building of the MFU for encapsulation using the MMT payload format.

2. The hybrid transmission method of claim 1 , wherein if a fragmentation is not used, the MMT hint track is omitted.

3. The hybrid transmission method of claim 1 , wherein the MMT hint track represents an entry format of a sample.

4. The hybrid transmission method of claim 1 , wherein the MPU includes MPU sequence number let the MPU be distinguished from other MPU in the asset,
wherein the MPU is identified by the MPU sequence number and an associated asset ID.

5. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a multilayer_flag indicating the provision of the multi-layer information is included.

6. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a dependency_id being an identification indicating dependency of the MFU.

7. The hybrid transmission method of claim 6 , wherein if the value of the dependency_id is not 0, a video related to the first content is enhanced by at least one scalability level in at least one of temporal, quality, and spatial resolution perspectives.

8. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a depth_id indicating whether the MFU transmits depth data of the video related to the first content.

9. The hybrid transmission method of claim 1 , wherein the MMT hint track includes the quality id being a quality identification of the MFU,
and wherein if the value of the quality_id is not 0, the video related to the first content is enhanced by at least one scalability level in at least one of temporal, quality, and spatial resolution perspectives.

10. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a temporal_id being a temporal identification of the MFU.

11. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a view id is a view identification of the MFU.

12. The hybrid transmission method of claim 1 , wherein the MMT hint track includes a layer_id indicating an identification of a scalable layer in which scalability dimensions information is provided in the initialization information.

13. A hybrid reception method which uses heterogeneous network including at least one of a broadcast network or a broadband network, the hybrid reception method comprising:
receiving an MPEG Multimedia Transport (MMT) packet of a first content through the heterogeneous network,
wherein the MMT packet is generated by
generating media processing unit (MPU) by encapsulating media fragment unit (MFU) being smaller than an access unit (AU) and contained data processed by a media decoder,
generating an MMT asset based on at least one MPU,
generating MMT package including at least one MMT asset, the composition information (CI) and transport characteristics (TC), and
adding an MMT packet header to MMT payload generated by referring to the MMT package, the MPU being a container for independently decodable timed or non-timed data and the MMT asset being a logical grouping of MPUs that share the same asset ID,

wherein the composition information comprises information on spatial and temporal relationship among the MMT assets,
wherein the MPU comprises an MMT hint track including information on converting the encapsulated MPU into the MMT payload and MMT packet, and
wherein the MMT hint track provides hint for extracting and building of the MFU for encapsulation using the MMT payload format.

14. The hybrid reception method of claim 13 , wherein the first content is received by using at least one selected from the group consisting of a data storage, a broadband network and a broadcast network.

15. The hybrid reception method of claim 13 , wherein information associated with the first content is transmitted as information of a broadcast content associated with the first content.

16. The hybrid reception method of claim 15 , wherein the information associated with the first content further comprises
a broadcast content associated with the first content,
wherein the broadcast content is received when the broadcast content associated with the first content is selected.

17. The hybrid reception method of claim 16 , wherein the broadcast content associated with the first content is received along with the first content.

18. The hybrid reception method of claim 16 , wherein the broadcast content associated with the first content is received in real time at the time of providing the broadcast content.

19. The hybrid reception method of claim 16 , wherein the broadcast content associated with the first content is stored.

20. The hybrid reception method of claim 13 , wherein the information associated with the first content is included in at least one selected from the group consisting of the MMT packet, the MMT packet header, the MMT payload, an MMT payload header, the MMT asset, an MMT asset header, asset delivery characteristics (ADC), MMT-composition information (MMT-CI), the MPU, and the MFU.

21. The hybrid reception method of claim 13 , wherein the information associated with the first content is at least one selected from the group consisting of program specific information (PSI), a program association table (PAT), a program map table (PMT), an advanced program map table (APMT), and a program ID (PID).

22. A hybrid transmission device which uses heterogeneous network including at least one of a broadcast network or a broadband network, the hybrid transmission device comprising:
at least one processor that executes non-transitory computer program code stored on storage media, wherein the non-transitory computer program code includes instructions to execute:
receiving an MPEG Media Transport (MMT) payload, and generating an MMT packet by
generating media processing unit (MPU) by encapsulating media fragment unit (MFU) being smaller than an access unit (AU) and contained data processed by a media decoder,
generating an MMT asset based on at least one MPU,
generating MMT package including at least one MMT asset, the composition information (CI) and transport characteristics (TC), and
adding an MMT packet header to MMT payload generated by referri

Assignees

• Humax Co Ltd

Inventors

• Yie Alex Chungku
• Lee Yong-Jae
• Kim Hui

Classifications

• H04N21/433

  Content storage operation, e.g. storage operation in response to a pause request, caching operations · CPC title

• H04N21/438 Primary

  Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network · CPC title

• H04N21/6125 Primary

  involving transmission via Internet (transmission by internet of broadcast information H04H60/82) · CPC title

• H04N21/8133 Primary

  specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video programme · CPC title

• H04N21/631

  Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols · CPC title