KR20140002471A - Transport system and client system for hybrid 3d contents service - Google Patents
Transport system and client system for hybrid 3d contents service Download PDFInfo
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- KR20140002471A KR20140002471A KR1020130021539A KR20130021539A KR20140002471A KR 20140002471 A KR20140002471 A KR 20140002471A KR 1020130021539 A KR1020130021539 A KR 1020130021539A KR 20130021539 A KR20130021539 A KR 20130021539A KR 20140002471 A KR20140002471 A KR 20140002471A
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- stream
- enhancement layer
- hybrid
- base layer
- network
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- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000003044 adaptive effect Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 12
- 230000006978 adaptation Effects 0.000 claims description 4
- 230000000153 supplemental effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 2
- 101710171221 30S ribosomal protein S11 Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000031509 superficial epidermolytic ichthyosis Diseases 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/194—Transmission of image signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—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
- H04N21/2368—Multiplexing of audio and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/615—Signal processing at physical level
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Disclosed is a transmission system for a hybrid 3D content service. The transmission system transmits a base layer (BL) stream of a scalable bitstream encoded by the SVC encoder and an SVC encoder encoding 3D content of left and right images to a client system through a broadcasting network. And a hybrid network transport streaming module for transmitting an enhancement layer (EL) stream to a client system through an internet network.
Description
The present invention relates to a 3D content service providing technology, and more particularly, to a technology for providing a
As major TV makers such as Samsung and LG are expanding their distribution to 3D TVs, domestic and overseas broadcasting companies are already providing or planning to provide 3DTV broadcasting. BSkyB in the UK is investing most actively in 3D services, starting with 3DTV test broadcasts in 2008. In France, the TF-1 relayed the 2010 South Africa FIFA World Cup in 3D video via IPTV and satellite. Germany, like France, provided 3DTV broadcasts for sports such as soccer and ice hockey. In the US, 3DTV pilot service was provided centering on cable TV. Among satellite channels, DIREC TV has been providing 3D VOD service since June 2010. In Japan, BS11 broadcasts documentaries, sports, dramas, animations, and about an hour a day.In Korea, terrestrial channels KBS, cable channels CJ HelloVision, HCN, Gangnam, C & M, Tbroad, Btv, Cook TV is providing 3D VOD service.
In order to provide such a 3D service, in the current broadcast network, a service compatible 3D service method is adopted and used to guarantee backward compatibility with an existing DTV (Digital TV) broadcasting system. Is shown. As shown, the
However, according to the system structure as shown in FIG. 1, the image quality difference due to the coding loss between the left image and the right image occurs, which may cause inconvenience to the user who views 3D. In addition, the combination of MPEG-2 and H.264 requires a wide bandwidth by encoding and transmitting Full HD video. In addition, in the 3D service using the broadcasting network and the Internet, since each of the schemes of FIG. 1 is independently encoded and transmitted through the Internet, the images can be leaked and reproduced without any restriction, and thus, content protection measures are required separately for content protection. .
An object of the present invention is to provide a transmission system and a client system for a
In addition, an object of the present invention is to provide a transmission system and a client system for a
In accordance with an aspect of the present invention, a transmission system for a
The hybrid network transport streaming module transmits the enhancement layer stream at the request of a client system.
The SVC encoder includes information on the number of video images to be output by the decoder of the client system in the Supplemental Enhancement Information (SEI) according to the type of content.
The hybrid network transport streaming module includes a layer separator that separates the scalable bitstream encoded by the SVC encoder into a base layer and an enhancement layer, and a base layer that converts the separated base layer stream into a transport stream (TS). And a TS multiplexer, an enhancement layer TS multiplexer for converting the separated enhancement layer streams into a transport stream, and an enhancement layer provider for segmenting and storing the enhancement layer transport stream and streaming the segment file at the corresponding time point requested by the client system.
The enhancement layer provider generates a media presentation description (MPD) file based on the segmented content of the enhancement layer transport stream, and provides the MPD file at the request of the client system.
The enhancement layer providing unit performs streaming transmission based on Hyper Text Transfer Protocol (HTTP).
On the other hand, the client system for a
The hybrid network reception module is a TS demultiplexer for a base layer that separates a transport stream received through a broadcasting network into a base layer stream and an audio stream, and requests and receives a media presentation description (MPD) file from the transport system, and uses the base layer for Streaming control engine that analyzes the time stamp of the 2D video provided from the TS demultiplexer and the segment information of the received MPD file to determine the enhancement layer segment TS file at the start of the download, the segment at the time determined by the streaming control engine from the transmission system. A single scalable bit by synchronizing the base layer stream with the enhancement layer stream, and an access client that downloads a TS file first, a TS demultiplexer for the enhancement layer that converts the downloaded enhancement layer TS file into an enhancement layer stream. Rimin includes a synchronization module for generating a SVC NAL data.
The streaming control engine requests an MPD file to the transmission system when a user requests a 3D viewing.
The adaptive SVC decoder checks the number of output images by identifying the SEIs belonging to the header of the SVC NAL (Network Adaptation Layer), which is a single scalable bitstream generated by the synchronization module, and determines the number of output images. Output video or 3D video.
According to the present invention, it is possible to encode and decode using one codec to reduce the difference in image quality between two images, which is problematic in the conventional method, and to provide Full-HD video service at a bit rate lower than that of the previous method. In addition to 2D compatible 3D services, multi-resolution 2D services and multi-resolution 3D services are possible.
In addition, according to the present invention, only the enhancement layer, which is decoded based on the information of the base layer, is transmitted through the Internet, thereby creating an effect of protecting the content without a separate content protection means.
1 is a block diagram of a
2 is a block diagram of a
3 is a block diagram of a hybrid network transport streaming module shown in FIG. 2;
4 is a block diagram of the hybrid network receiving module shown in FIG. 2;
5 shows a standard SVC decoding scheme.
6 illustrates an SVC decoding scheme according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and further aspects of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2 is a block diagram of a
The
As shown in Table 1, the output identification value (OID) may be a binary value having a 2-bit length. If the OID is “00”, it has one output, which means providing 2D video. In addition, "01" or "10" indicates two outputs of the decoder, which means providing 3D video. The above OID value can be allocated by increasing the representable bit if necessary. This may be arbitrarily set by the provider storing and transmitting the content.
The hybrid network
As shown in FIG. 3, the hybrid network
The TS muxer 123 for the enhancement layer converts only the enhancement layer into MPEG-2 TS. The converted enhancement layer TS is generated through streaming that can be transmitted based on HTTP through the
Meanwhile, the
The hybrid
The streaming
The
The scalable bitstream generated in synchronization by the
5 is a diagram illustrating a standard SVC decoding scheme.
When the encoded bitstream consisting of three layers is input to the standard SVC decoder as illustrated in FIG. 5, the reconstructed pictures of the base layer and the lower enhancement layer are used only as reference data. That is, the existing standard SVC decoder receives the encoded bitstream (SVC NAL), analyzes header information, and decodes the base layer (S510). The standard SVC decoder decodes the lower enhancement layer by using the reference data obtained in S510 (S520), and then decodes the highest enhancement layer by using the reference data obtained therefrom, and outputs an image having the image quality of the highest layer (S530). .
6 illustrates an SVC decoding scheme according to an embodiment of the present invention.
The
The existing standard SVC decoder receives SVC NAL information, analyzes header information, and decodes the base layer. Decoded base layer information is used as a reference value in decoding the enhancement layers and discarded. By this procedure, the existing SVC outputs the image of the highest layer. However, the
So far I looked at the center of the preferred embodiment for the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
100: transmission system 110: SVC encoder
120: hybrid network transmission streaming module 121: layer separation unit
122: TS Muxer for base layer 123: TS Muxer for enhancement layer
124: enhancement layer provider 200: client system
210: hybrid network receiving module 211: TS Demuxer for the base layer
212: Streaming Control Engine 213: Access Client
214:
220: adaptive SVC decoder
Claims (11)
A base layer (BL) stream of the scalable bitstreams encoded by the SVC encoder is transmitted to a client system through a broadcasting network, and an enhancement layer (EL) stream is transmitted to a client system through an internet network. Hybrid network transport streaming module;
Transmission system for a hybrid 3D content service, characterized in that it comprises a.
And the hybrid network transport streaming module transmits the enhancement layer stream at the request of a client system.
The SVC encoder includes information on the number of video images to be output by the decoder of the client system in the Supplemental Enhancement Information (SEI) according to the type of the content.
A hierarchical separation unit for dividing the scalable bitstream encoded by the SVC encoder into a base layer and an enhancement layer;
A base layer TS multiplexer for converting the separated base layer stream into a transport stream (TS);
An enhancement layer TS multiplexer for converting the separated enhancement layer streams into transport streams; And
An enhancement layer provider for segmenting and storing the enhancement layer transport stream and streaming the segment from the segment file of the corresponding time point requested by the client system;
Transmission system for a hybrid 3D content service, characterized in that it comprises a.
The base layer TS multiplexer merges the separated base layer stream and the audio stream.
The enhancement layer providing unit generates a media presentation description (MPD) file based on the segmented content of the enhancement layer transport stream, and provides the same upon request of a client system.
The enhancement layer providing unit is a transmission system for a hybrid 3D content service, characterized in that for streaming transmission based on HTTP (Hyper Text Transfer Protocol).
An adaptive SVC decoder for decoding a stream received by the hybrid network receiving module to output a 2D image or to output a 3D image;
Client system for a hybrid 3D content service, characterized in that it comprises a.
A TS demultiplexer for base layer that separates a transport stream received through a broadcasting network into a base layer stream and an audio stream;
Request and receive a Media Presentation Description (MPD) file from the transmission system, analyze the time stamp of the 2D video provided from the base layer TS demultiplexer and segment information of the received MPD file to improve the segment layer TS file at the start of download. A streaming control engine to determine;
An access client to download from the transmission system from the segment TS file at the time determined by the streaming control engine; And
An enhancement layer TS demultiplexer for converting the downloaded enhancement layer TS file into an enhancement layer stream;
A synchronization module for synchronizing the base layer stream and the enhancement layer stream to generate SVC NAL data which is a single scalable bitstream;
Client system for a hybrid 3D content service, characterized in that it comprises a.
The streaming control engine is a client system for a hybrid 3D content service, characterized in that for requesting a 3D viewing of the user MPD file to the transmission system.
The adaptive SVC decoder checks the number of output images by identifying SEI (Supplemental Enhancement Information) belonging to a header of an SVC NAL (Network Adaptation Layer), which is a single scalable bitstream generated by the synchronization module, and determines the number of output images. Client system for a hybrid 3D content service, characterized in that for outputting 2D video or 3D video according to the number of images.
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US13/922,538 US20140002598A1 (en) | 2012-06-29 | 2013-06-20 | Transport system and client system for hybrid 3d content service |
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KR1020120070948 | 2012-06-29 | ||
KR20120070948 | 2012-06-29 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101656193B1 (en) * | 2015-08-11 | 2016-09-22 | 서울여자대학교 산학협력단 | MMT-based Broadcasting System and Method for UHD Video Streaming over Heterogeneous Networks |
WO2018016879A1 (en) * | 2016-07-19 | 2018-01-25 | 한국전자통신연구원 | Method and device for providing 360-degree virtual reality broadcasting service |
KR20180009725A (en) * | 2016-07-19 | 2018-01-29 | 한국전자통신연구원 | Method and apparatus for providing 360 degree virtual reality broadcasting services |
US11082728B2 (en) | 2018-08-31 | 2021-08-03 | Electronics And Telecommunications Research Institute | Method and apparatus for providing broadcast service based on scalable codec |
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2013
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101656193B1 (en) * | 2015-08-11 | 2016-09-22 | 서울여자대학교 산학협력단 | MMT-based Broadcasting System and Method for UHD Video Streaming over Heterogeneous Networks |
WO2018016879A1 (en) * | 2016-07-19 | 2018-01-25 | 한국전자통신연구원 | Method and device for providing 360-degree virtual reality broadcasting service |
KR20180009725A (en) * | 2016-07-19 | 2018-01-29 | 한국전자통신연구원 | Method and apparatus for providing 360 degree virtual reality broadcasting services |
US10931980B2 (en) | 2016-07-19 | 2021-02-23 | Electronics And Telecommunications Research Institute | Method and apparatus for providing 360 degree virtual reality broadcasting service |
US11082728B2 (en) | 2018-08-31 | 2021-08-03 | Electronics And Telecommunications Research Institute | Method and apparatus for providing broadcast service based on scalable codec |
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