WO2012099403A2 - Procédé et appareil d'envoi/réception de contenu dans un système de diffusion - Google Patents

Procédé et appareil d'envoi/réception de contenu dans un système de diffusion Download PDF

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Publication number
WO2012099403A2
WO2012099403A2 PCT/KR2012/000453 KR2012000453W WO2012099403A2 WO 2012099403 A2 WO2012099403 A2 WO 2012099403A2 KR 2012000453 W KR2012000453 W KR 2012000453W WO 2012099403 A2 WO2012099403 A2 WO 2012099403A2
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WO
WIPO (PCT)
Prior art keywords
mmt
package
item
asset
configuration information
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PCT/KR2012/000453
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English (en)
Korean (ko)
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WO2012099403A3 (fr
Inventor
유성열
송재연
Original Assignee
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from KR1020110005640A external-priority patent/KR20120083820A/ko
Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to US13/980,236 priority Critical patent/US10116997B2/en
Priority to KR1020137018666A priority patent/KR101855516B1/ko
Priority to KR1020187012457A priority patent/KR101895443B1/ko
Priority to KR1020187025083A priority patent/KR101922988B1/ko
Publication of WO2012099403A2 publication Critical patent/WO2012099403A2/fr
Publication of WO2012099403A3 publication Critical patent/WO2012099403A3/fr

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    • 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 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • 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

Definitions

  • the present invention relates to a method and apparatus for transmitting / receiving content in a broadcast system, and more particularly, to an apparatus and method for transmitting / receiving content through a heterogeneous network in a broadcast system supporting a multimedia service based on an Internet protocol.
  • the service provider tries to provide more information on one service screen.
  • the screen of the frequently viewed news may have a smaller portion of the screen due to the ticker, stock information, and news titles.
  • the present invention provides an apparatus and method for constructing a service using a plurality of contents by a service provider and transmitting the same using one or a plurality of paths on a heterogeneous network.
  • the present invention provides an apparatus and method for consuming a service using a plurality of contents in a convergence environment.
  • a method for transmitting a content to be transmitted through a heterogeneous network in a broadcasting system supporting a multimedia service based on an Internet protocol includes generating at least one package including an MPEG Media Transport (MMT) item. And providing the at least one package to the terminal, wherein the MMT item includes MMT assets and configuration information of the MMT assets.
  • MMT MPEG Media Transport
  • An apparatus is a content transmission apparatus to be transmitted through a heterogeneous network in a broadcasting system supporting a multimedia service based on an Internet protocol, and generates at least one package including an MMT (MPEG Media Transport) item.
  • MMT MPEG Media Transport
  • MMT MPEG Media Transport
  • An apparatus is a receiving unit for receiving at least one package including an MMT (MPEG Media Transport) item in a content receiving apparatus through a heterogeneous network in a broadcasting system supporting a multimedia service based on an Internet protocol.
  • a package analyzing unit analyzing the package and a processing unit processing an MMT item and an MMT asset included in the package according to the analysis result, wherein the MMT item includes MMT assets and configuration information of the MMT assets.
  • MMT MPEG Media Transport
  • 1 is a block diagram showing a transmission system architecture based on MMT
  • FIG. 4 is a diagram illustrating a temporal and spatial MMT asset configuration of an MMT item
  • FIG. 5 is a block diagram of a service provider according to an embodiment of the present invention.
  • FIG. 6 is an operation flowchart of a service provider according to an embodiment of the present invention.
  • FIG. 7 is a block diagram of a playback apparatus according to an embodiment of the present invention.
  • 8A and 8B are flowcharts illustrating operations of a playback apparatus according to an embodiment of the present invention.
  • the MPEG-2 standard introduces unnecessary overhead when transmitting using unidirectional communication, transmission inefficiency due to fixed frame sizes, transmission protocols specific to audio / video, and Internet protocol (IP). It was proposed by MPEG to overcome the limitations of Moving Picture Expert Group-2 Transport Stream (TS).
  • TS Moving Picture Expert Group-2 Transport Stream
  • the MMT standard may be applied to efficiently transmit a plurality of contents through heterogeneous networks.
  • the plurality of contents means a set of contents having multimedia elements by video, audio, and application.
  • the heterogeneous network refers to a network in which a broadcast network and a communication network are mixed.
  • the MMT standard aims to define a transport technology that is more friendly to IP, which is a basic technology in a transport network for multimedia services.
  • the MMT standard is to provide an efficient MPEG transmission technology in a multimedia service environment that is typically changed based on IP, and standardization has been progressed with continuous research.
  • the MMT standard needs to provide a method for providing an efficient MPEG transmission technology in a multimedia service environment in which a hybrid network (or a heterogeneous network) and a hybrid content are provided.
  • a service provider constructs a service using a plurality of contents and transmits the service using one or a plurality of paths on a heterogeneous network, the service can be consumed in a converged environment.
  • 1 is a block diagram illustrating a transmission system architecture based on MMT.
  • the MMT divides a transmission system environment into an encapsulation (100), a delivery (120), and a control (130) to configure a role and to be in a cooperative relationship.
  • An encapsulation layer should generate MMT items using MMT assets.
  • MMT assets are composed of elements such as video, audio, web contents, applications, and the like. Each MMT asset may be independent content for user consumption.
  • Layer E has two sublayers. The second sub-layer E.2 generates MMT assets and provides configuration information of the MMT assets. E.2 communicates with control layers to provide MMT asset information.
  • the first sub layer E.1 generates an MMT package.
  • the MMT package is stored and used to deliver MMT items consumed by the user.
  • the MMT package may deliver a live type of MMT items, a file type of MMT items, and a hybrid type of MMT items.
  • E.1 also provides relevant information of MMT assets in a package.
  • Layer E communicates with layer C and layer D to deliver the MMT package.
  • the delivery layer (hereinafter, referred to as 'layer D') must deliver the MMT package and data received from the layer C to the receiving end.
  • layer D uses an access unit (AU).
  • AU access unit
  • Each MMT item (or package) may have a different type of AU because the QoS characteristics may be different.
  • Layer T also consists of two sublayers.
  • D.1 creates an AU based on the characteristics and data of the package from layer C.
  • D.1 communicates with Layer C and Layer D.
  • D.2 generates D frames and provides the functionality of flow control.
  • D.2 also provides information on the D-Frame that can be used by network nodes for QoS guarantees.
  • the control layer (hereinafter, referred to as 'layer C') manages all functions required for MMT assets and MMT item consumption.
  • Layer C.1 provides the functionality of MMT assets, MMT item information and consumption related information, manages connectivity to MMT packages, and provides device capabilities such as codec and memory status.
  • Manage. Layer C.2 shall perform session management and data transmission generated in layer C for MMT D frames.
  • the Encapsulation 100 types (ie, embodies or encapsulates) the service that the service provider intends to provide.
  • the delivery 120 transmits the content at the quality required by the service when one of the available paths between the service provider and the consumer is selected.
  • the control 130 displays a path through which the container and the content constituting the service can be provided along with a list of services currently available for starting the service.
  • FIG. 2 illustrates a configuration diagram of an MMT item, an MMT asset, and a package.
  • MMT Encapsulations are composed of MMT item, MMT asset, package, and slice.
  • the MMT item is a service to be provided by a service provider, and represents a minimum unit that a consumer can purchase.
  • the MMT item consists of MMT assets and configuration information of the MMT assets.
  • the MMT asset is a component constituting the MMT item and represents a minimum unit that can be consumed.
  • the MMT asset includes MPEG-2 TS, Moving Picture Expert Group-2 Program Stream (MPEG-2 PS), mp4, mp21, MPEG-U Widget, Application, Image, and Dynamic Adaptive Streaming over HTTP (DASH).
  • MPEG-2 PS Moving Picture Expert Group-2 Program Stream
  • mp4 mp21
  • MPEG-U Widget Application
  • Image Image
  • DASH Dynamic Adaptive Streaming over HTTP
  • the MMT asset may be provided from different MMT asset providers.
  • the package encapsulates MMT assets.
  • the MMT item is included in one or several packages and transmitted.
  • Slice represents one or several slices of an MMT asset.
  • the package may include one or several MMT assets.
  • the package includes a list of MMT assets, transmission characteristics of each MMT asset, detailed description, slice list, MMT item configuration information, and MMT asset as payload.
  • FIG. 3 shows a package and slice list configuration diagram.
  • the package includes a list of MMT assets, MMT item configuration information, and MMT assets.
  • the list of MMT assets includes transmission characteristics, detailed description, and slice list of each MMT asset.
  • the MMT asset list provides a list of MMT assets in one package.
  • the MMT asset list also provides a list of assets in another package.
  • the MMT asset list includes id, transmission characteristics, detailed description, and slice list for each MMT asset.
  • the actual MMT asset is stored as payload of the package.
  • Transport characteristics of the service provider's point of view recommended for playing the MMT asset are displayed. Transmission characteristics are a requirement to ensure quality when transmitted. Informs the information required for the MMT asset to be properly transmitted and consumed.
  • the MMT asset may be played in perfect or loosely synchronized with other MMT assets on the time axis of the MMT item. In addition, all clients connected to the service provider may need to be played simultaneously based on the wall clock. Alternatively, depending on the type of MMT asset, transmission may be performed without error or loss (widget, program) or loss may be allowed (adaptive streaming, frame drop).
  • MMT assets may require unicast or bidirectional connections. Connection types include one-to-one, one-to-n, one-way and two-way. In addition, loss loss, loss allowance, and connection relationship are included in the transport characteristics.
  • MMT-Delivery or MMT-Control are passed to MMT-Delivery or MMT-Control and used to map numerical and physical characteristics according to the functions provided by each.
  • Information required for individually consuming or storing the MMT asset for example, a filename, a mime-type, and the like of the MMT asset are provided. Used to store or separately consume MMT assets.
  • the detailed description may include things that are property values of the asset, in addition to contents in which the properties of the asset are enumerated.
  • the MMT asset is divided into slices and stored in a payload.
  • the slices can be one or several and each slice does not have to be the same length. According to the characteristics of the MMT asset, when slices are separated and stored temporally, spatially and semantically, they can be used to map from D1 to AU (Access Unit).
  • a slice has a relative position on the payload, its length, and the pts time of that slice.
  • the Slice list indicates how the slices cut the MMT asset are distributed on the payload.
  • MMT items are designed to be used for storage and transmission.
  • the general structure is basically used for storage purposes. Interleave is used for streaming transmission.
  • the live structure is used for live streaming of infinite length.
  • One MMT asset is stored as one slice.
  • one MMT asset is divided into several slices and stored.
  • the time point on the MMT asset individual time axis may be known through a presentation time stamp (pts) of the slice.
  • Slice is cut and provided in units of seconds or group of pictures based on pts.
  • one MMT asset is divided into several slices and stored. MMT assets to be reproduced together are interleaved and stored.
  • Slice is provided by cutting in units of seconds or group of pictures based on pts.
  • Slices of MMT assets representing the same time zone may be provided as a group according to the order of time expressed on the time axis of the MMT item.
  • a package transmits only a part of MMT assets and assumes that a package having the same id among subsequent packages is transmitting the rear part of the MMT asset.
  • the sequence number is checked to determine whether the sequence number of the previous package and the sequence number of the subsequent package are increased by one. If the sequence number has not increased by 1, this is a case where the package has been repeatedly sent for special purposes and should not be used unless there is a problem with the transfer. However, if the sequence number has increased by more than 1, you have not received a package that should have been sent in the middle, so you will need to request retransmission or reset the parameters needed to play the package.
  • the package interval can be adjusted according to the transmission time and transmission rate.
  • the rate is theoretically calculated at a fixed bit rate and specifies the size of the package so that the header of one or more integer packages starts at a given time, for example, 0.7 seconds.
  • information corresponding to additional information for example, MMT asset description, transmission characteristics, and MMT item configuration information may be omitted from the header of the package of the intermediate section that does not correspond to 0.7 seconds. At this time, the omitted information is considered to be valid between MMT items having the same package id.
  • FIG. 4 illustrates a temporal and spatial MMT asset configuration diagram of an MMT item.
  • MMT item is composed of MMT assets.
  • the MMT item configuration indicates the configuration of the corresponding / different encapsulation in the time and space of the MMT item, the configuration of the MMT asset in the encapsulation, and the configuration of the MMT asset component in the MMT asset in the encapsulation.
  • the MMT item configuration information has the following entities as sub-components, and how the MMT asset is arranged on the playing time and space of the MMT item and between each MMT asset as intended by the service provider through the MMT item configuration information Tell the relationship.
  • FIG. 4 it describes when and what part of the MMT asset is displayed and when it is displayed on the reproduction time of the MMT item.
  • FIG. 4 it describes which part of the MMT asset is displayed and where in the expression space of the MMT item.
  • Configuration information of MMT item is an xml document and is represented using seq, par, and sel elements. If the format is other than xml, other methods (e.g. fields, boxes such as ISOFF, etc.) that play a corresponding role are possible.
  • the Seq element executes the child elements in order.
  • Par elements execute child elements in parallel at the same time.
  • -Sel element selects and executes only one of its child elements.
  • the three elements have start as an attribute.
  • Start is the time on the MMT item time base that the element starts at.
  • Div is a temporal and spatial place holder for MMT assets.
  • Div element has target_characteristic as an attribute.
  • Target_characteristic is a characteristic required for executing the MMT asset. Even if all of the above described characteristics are not satisfied, it is recommended that the closest reproducing apparatus available among those available for reproducing the MMT item reproduce.
  • Target_characteristic values include main, 3d, interactivity, remote, n-screen, and mvc. However, this is not limitative.
  • ° Main means the playback device which is the center.
  • ° 3d means a device that supports 3-D playback.
  • N-screen means an n-screen configuration device or a plurality of devices participating in n-screen configuration.
  • Remote stands for remote controller.
  • Interactivity A device that can receive user interactive input.
  • the MMT asset B can be independently reproduced even without the MMT asset A. (independent)
  • MMT asset C, MMT asset D, and MMT asset E are relationships in which only one is selected on the time axis as shown in Table 2 below.
  • MMT asset F, MMT asset G, and MMT asset H are relationships that must be performed together as shown in Table 3 below. (More compelling AND)
  • Example 1 Syntax of Table 4 below shows a case in which MMT asset 1 or MMT asset 1 and MMT asset 2 are reproduced from 100 seconds to 200 seconds in MMT item time 50 seconds.
  • Example 2 The following Syntax shows a case where (0,0 ⁇ 800,600) of MMT asset 1 is attached to (100,100 ⁇ 800,600) of MMT item. (0,0) and (100,100) represent (x-axis, y-axis), and (800,600) represent (width, height).
  • MMT asset 1 is displayed on the main device and MMT asset 2 is displayed on the second device.
  • target_characteristics main, 3d, interactivity, remote, n-screen, mvc ...
  • Asset 1 can be displayed to the user as a main device (eg, TV screen), and Assest 2 as a second device (ie, a web page of a mobile phone).
  • a main device eg, TV screen
  • Assest 2 a second device
  • Transmission characteristics of package and transmission characteristics of MMT asset The transmission characteristics that the MMT asset should have in the unit of a package or in units of MMT assets in the package are described at a high level.
  • MMT-C the transmission characteristics are mapped to a network path that can be provided by an MMT item provider.
  • the MMT-T transmits a path on a network provided by the MMT-C.
  • a path that can be provided to the MMT asset should not be written. It is not meaningful to write down the path as it may vary depending on the environment.
  • the actual path is provided in another layer-C, and the hint that creates the path separates the content from the delivery environment.
  • the mime-type and file name are provided when the mmt asset is stored or separately consumed.
  • the value is described depending on whether slice is a regular array, or whether trick mode, live transfer, or file transfer is considered.
  • slice is composed of Access Unit units such as MPEG-2 and MPEG-4.
  • FIG. 5 is a flowchart illustrating an operation of a service provider according to an exemplary embodiment of the present invention.
  • FIG. 5 The operation of FIG. 5 is of course performed at the service provider of FIG. 6. However, it is not limited to the service provider of FIG. 6.
  • the service provider receives an MMT asset from an MMT asset provider and configures an MMT item to be sold using the MMT asset.
  • MMT asset configuration information for describing how to configure the MMT asset within the MMT item should be provided.
  • the MMT item configuration information is preferably provided together with the MMT asset. Accordingly, the MMT item configuration information is loaded and provided using a header-payload structure called a package.
  • Packages are created by the service provider to compose MMT items, and several packages may be used to compose one MMT item.
  • a package is identified by its package id, MMT item id, and sequence number.
  • the package has the MMT item id it represents.
  • the package id is for distinguishing between different packages. Even if the package ids are different, if the MMT item ids are the same, they are different packages that compose the same MMT item. If different packages with the same package id exist, they are distinguished by sequence number. There is a method of making a small package and transmitting the package several times for the above-mentioned purposes such as live broadcasting. At this time, the sequence number is used to check whether there is a missing package in the front and rear relationship.
  • the service provider uses MMT-Control and MMT-Delivery to make the discovery information and transmission information of the MMT item accessible to the playback device.
  • the initiation of the transmission may be at the request of the playback device in the case of a one-to-one relationship or in any transmission in which the participation of any playback device is expected in the case of a one-to-many relationship or broadcast transmission.
  • the service provider creates an MMT item in step 501 and determines whether an MMT asset is created in real time in step 503. That is, the service provider determines whether live transmission is possible. If the live transmission is possible, the service provider generates a package in step 505. In step 507, the service provider inserts header information into the package. At this time, when inserting header information, the same package id is used. In addition, when the header information is inserted in step 509, the service provider inserts creation time information using a time stamp. In addition, the service provider increments the sequence number by 1 when inserting the header information for transmission live at step 511. Thereafter, the service provider generates a payload in step 513. As such, the MMT asset is stored by generating the payload.
  • the service provider Simultaneously with the generation of the package in step 505, the service provider generates an MMT asset in step 515. Thereafter, the service provider proceeds to step 513.
  • the service provider determines whether to support the trick mode in step 517. If the trick mode is supported, the service provider generates a package in step 519. In step 521, the service provider inserts header information into the package.
  • the service provider identifies MMT item configuration information in step 523. Thereafter, the service provider generates a payload in step 525. As such, the MMT asset is stored by generating the payload.
  • the service provider has an MMT asset in step 529.
  • the service provider slices an MMT asset used on an MMT item time axis in units of time and proceeds to step 525.
  • the service provider completes the package generation in step 527.
  • the service provider If the trick mode is not supported in step 517, the service provider generates a package in step 533. Thereafter, the service provider inserts header information into the package in step 535 and generates a payload in step 537. As such, the MMT asset is stored by generating the payload. The service provider completes package generation in step 539.
  • the service provider has an MMT asset in step 541. Thereafter, the service provider proceeds to step 539.
  • FIG. 6 is a block diagram of a service provider according to an embodiment of the present invention.
  • the MMT MT asset is provided to the service provider 600. Then, the MMT asset decoder 620 in the service provider 600 receives the MMT asset and decodes the MMT asset.
  • the MMT item generator 630 creates an intended MMT item by reflecting the decoding result of the MMT asset decoder 620.
  • the MMT item generating unit 630 is used as a component, and delivers information about the MMT item and the MMT asset to the package generating unit 635 to store in the package.
  • the package generator 635 receives the MMT asset from the buffer 1 625 and stores the MMT asset as a payload in the package, and stores the MMT asset in the buffer 2 640 again.
  • the service provider 600 delivers information about the package to the MMT-Control 660 to provide the package, and delivers the information about the package to the playback device through the storage device 645, the network 650, or the like.
  • FIG. 7 is a block diagram of a playback apparatus according to an embodiment of the present invention.
  • the reproduction device may know the existence of the MMT item, a transmission method, a path, etc. for transmitting the same through the MMT-Control.
  • the playback device receives the package constituting the MMT item and starts playback of the MMT item.
  • the playback device selects a path that can be supported by the playback device from a plurality of available paths provided by the service provider and downloads the MMT asset. If the path taken down by changes in the surrounding environment is no longer available, the playback device is responsible for changing the network device for seamless transmission or playback.
  • the playback device attempts to divide a portion of the MMT asset from the available path periodically within the range that does not impair the playback and transmission performance of the entire playback device when more than one path is available. Since the MMT asset is divided into slices and the slice list is also given to the package, it is possible to download and download different slices for a plurality of paths.
  • Types of playback devices include home servers, main display devices, subdisplay devices, and the like. After the playback device receives the configuration packages of the MMT item from the service provider through the home server, the playback device searches for a playback device to which the MMT assets are appropriately played and instructs the playback device to play the MMT asset.
  • the home server of the playback apparatus refers to the MMT item configuration information.
  • This information specifies where the MMT assets should be represented in terms of time and space, and what device capabilities are required in target_characteristic. That is, if the value corresponding to the property cannot be supported by the playback device connected to the home server, it is inevitable.
  • the MMT asset may be played by the playback device that satisfies the target_characteristic. To be able.
  • the playback device may know the existence of an MMT item and a path on a network of a package configuring the MMT item through the MMT-Control.
  • Receiving unit 712 collectively includes everything that can accept information from the outside over the wired and wireless network, through which the package is transmitted.
  • the package may be primarily stored in package buffer 1 714 for processing and may be temporarily or semi-permanently stored in storage 716 in the playback device as needed.
  • the package is passed to the package parser 718 for interpretation, and the header information of the package is stored in the buffer 2 720 and used in the case of a continuous package such as a live broadcast.
  • the MMT item description in the package header is processed by a separate processing unit, which becomes the main processing unit for presenting the MMT item to the user.
  • the MMT asset stored in the buffer 3 724 is transmitted to the MMT asset processing unit 726 and then transferred to the display device 728 at a proper time. Final consumption. If the user issues a trick play command such as fast forwarding or playing after 30 seconds during playback, it is transmitted to the MMT item description processing unit 722, where the requested time corresponds to any of the MMT item time axis, and certain MMT assets are displayed. After re-determining whether it should be, the corresponding MMT asset is processed by the processor.
  • a trick play command such as fast forwarding or playing after 30 seconds during playback
  • FIGS. 8A and 8B are flowcharts illustrating operations of a reproducing apparatus according to an exemplary embodiment of the present invention.
  • 8A and 8B are of course performed in the playback apparatus of FIG.
  • the present invention is not limited to the playback apparatus in FIG.
  • step 801 the playback apparatus plays back the MMT item and receives information including whether the MMT item is recognized, the path is recognized, the live and the trick mode are supported.
  • step 805 the playback apparatus determines whether the transmission is a live transmission. If live, the playback device receives the package in step 807, and determines whether the package ids are the same in step 809. If the package ids are the same, the playback apparatus determines whether the sequence number has increased in step 811. If the sequence number is increased, the playback apparatus determines whether the MMT item description exists in step 813. If there is an MMT item description, the playback apparatus stores the MMT item description in a buffer in step 815 and interprets the MMT item description in step 817. Thereafter, the playback device receives the associated package in step 819, and plays the MMT item in step 821. The playback device returns to step 807 again.
  • step 809 If the package ids are not the same in step 809, and the sequence number does not increase in step 811, the playback apparatus returns to step 807. If there is no MMT item description in step 813, the playback apparatus proceeds to step 817.
  • the playback device receives a package associated with the package as well as the package in step 823, and interprets the MMT configuration information list in step 825.
  • the playback device plays the MMT item.
  • the playback apparatus receives a user trick command, and determines whether to support a trick mode in step 833. If the trick mode is supported, the playback apparatus searches for an MMT asset corresponding to a time on the MMT item in step 835. As a result of the search, the playback apparatus obtains pts by comparing the MMT item time and the MMT asset time in step 837.
  • the playback apparatus identifies a slice and searches for a slice corresponding to pts.
  • the playback device plays the MMT item in step 841.
  • the playback apparatus searches for an MMT asset corresponding to a time on the MMT item in operation 843.
  • the playback device determines whether all necessary MMT assets have been downloaded in step 845. If all necessary MMT assets have been downloaded, the playback device plays the MMT item in step 847.
  • a service provider configures a service using a plurality of contents and transmits the service using one or a plurality of paths on a heterogeneous network.
  • the present invention can consume an efficient service using a plurality of contents in a convergence environment.

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Abstract

La présente invention porte sur un système de transmission de contenu et, en particulier, sur un procédé et un appareil de transmission de contenu dans un système de transmission de contenu. La présente invention porte sur un appareil et un procédé dans lesquels un fournisseur de services construit un service à l'aide d'une pluralité d'éléments de contenu, et transmet le service par un ou plusieurs chemins sur un réseau hétérogène, de telle sorte que le service peut être consommé dans un environnement de convergence.
PCT/KR2012/000453 2011-01-18 2012-01-18 Procédé et appareil d'envoi/réception de contenu dans un système de diffusion WO2012099403A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/980,236 US10116997B2 (en) 2011-01-18 2012-01-18 Method and apparatus for transmitting/receiving content in a broadcast system
KR1020137018666A KR101855516B1 (ko) 2011-01-18 2012-01-18 방송 시스템에서 컨텐츠 전송/수신 방법 및 장치
KR1020187012457A KR101895443B1 (ko) 2011-01-18 2012-01-18 방송 시스템에서 컨텐츠 전송/수신 방법 및 장치
KR1020187025083A KR101922988B1 (ko) 2011-01-18 2012-01-18 방송 시스템에서 컨텐츠 전송/수신 방법 및 장치

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20110005174 2011-01-18
KR10-2011-0005174 2011-01-18
KR10-2011-0005640 2011-01-19
KR1020110005640A KR20120083820A (ko) 2011-01-18 2011-01-19 컨텐츠 전송 시스템에서 컨텐츠 전송 방법 및 장치

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WO2014058276A1 (fr) * 2012-10-11 2014-04-17 Samsung Electronics Co., Ltd. Appareil et procédé de transmission et de réception de données multimédias dans un réseau hybride
WO2015065028A1 (fr) * 2013-10-28 2015-05-07 Samsung Electronics Co., Ltd. Présentation de contenu pour un transport de média mpeg

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JP3447207B2 (ja) * 1997-12-05 2003-09-16 松下電器産業株式会社 番組情報作成伝送装置及び方法
KR20060114080A (ko) * 2005-04-27 2006-11-06 삼성전자주식회사 멀티미디어 스트리밍 서비스 시스템 및 방법
KR20070078238A (ko) * 2006-01-26 2007-07-31 에스케이 텔레콤주식회사 통신 망에서의 멀티미디어 컨텐츠 전송 방법 및 시스템

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014058276A1 (fr) * 2012-10-11 2014-04-17 Samsung Electronics Co., Ltd. Appareil et procédé de transmission et de réception de données multimédias dans un réseau hybride
US9888293B2 (en) 2012-10-11 2018-02-06 Samsung Electronics Co., Ltd. Apparatus and method for delivering and receiving multimedia data in hybrid network
US10469915B2 (en) 2012-10-11 2019-11-05 Samsung Electronics Co., Ltd. Apparatus and method for delivering and receiving multimedia data in hybrid network
US10469914B2 (en) 2012-10-11 2019-11-05 Samsung Electronics Co., Ltd. Apparatus and method for delivering and receiving multimedia data in hybrid network
US10477280B2 (en) 2012-10-11 2019-11-12 Samsung Electronics Co., Ltd. Apparatus and method for delivering and receiving multimedia data in hybrid network
WO2015065028A1 (fr) * 2013-10-28 2015-05-07 Samsung Electronics Co., Ltd. Présentation de contenu pour un transport de média mpeg
JP2016541173A (ja) * 2013-10-28 2016-12-28 サムスン エレクトロニクス カンパニー リミテッド Ｍｐｅｇメディアトランスポートのためのコンテンツ表現

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