The present disclosure relates to a device and a method for transmitting/receiving scene composition information in a multimedia communication system. More particularly, the present disclosure relates to a device and a method for transmitting/receiving scene composition information created in a form in which media attribute information and spatial-temporal information are separated from each other.
Recently, with the development of digital technologies, the age of broadcasting-communication convergence has come, and a consumption environment for multimedia services such as images, music, and entertainment media has been expanded through broadcasting-communication convergence media such as an Internet Protocol Tele-Vision (hereinafter, referred to as ‘IPTV’), a smart TV, and the like. The expansion of the consumption environment for the multimedia services has been made through progress of a multimedia communication environment from the existing environment in which a service for one media is provided in one direction to an environment in which a variety of information can be simultaneously consumed due to the development of terminals and communication technologies, and through generalization of media consumption for a consumer to obtain only desired information.
Meanwhile, scene composition information is provided together with a multimedia service. When various multimedia services including a video service and an audio service are provided, scene composition information represents spatial information and temporal information, in which the spatial information represents an area where each media included in the multimedia service occupies in the corresponding scene, and the temporal information represents a time point when each media has to be provided. The scene composition information is presented in the markup language form for explanation of an associative relationship between the media. The scene composition information is mainly presented using eXtensible MarkUp Language (XML) in order to express the spatial-temporal information for the various multimedia services. The scene composition information may also be used for multimedia services provided in a hybrid broadcasting environment utilizing the existing broadcasting network and internet network as well as the existing broadcasting environment. Accordingly, demands for scene composition information suitable for a multimedia environment such as the hybrid broadcasting environment are emerging.
Meanwhile, in order to provide a multimedia service in a broadcasting environment, information required for identifying whether media data which the corresponding multimedia service will provide can be used and accessing the media data, and information required for accurately analyzing and displaying received media data are needed in an initial stage when the multimedia service is provided. Here, the information required for identifying whether the media data can be used and accessing the media data, and the information required for accurately analyzing and displaying the received media data correspond to media attribute information.
However, scene composition information provided in the existing multimedia service is implemented in the form in which media attribute information is presented along with spatial-temporal information, and therefore, when the existing scene composition information is used to provide a multimedia service in a broadcasting environment, a process of identifying whether media data can be used and making a preparation for displaying the media data may be performed after the scene composition information is completely interpreted. Furthermore, when identical media data is repetitively used for composing the corresponding scene, media attribute information is also repetitively generated in spite of the substantially identical media data.
Moreover, there exists one XML file per scene in the existing scene composition information, and therefore, when the entire scene is changed, a new XML file is used. Accordingly, when media data in the previous scene is continued in the next scene, continuity of the corresponding media data cannot be ensured. Consequently, it may be a problem to apply, in the same way, the existing scene composition information to a broadcasting environment in which media data has to be continuously reproduced.
In addition, as a scene is composed based on media data in the existing scene composition information, when some parts of the scene are independently composed, complicated presentation is accordingly required, and when some parts of the scene are changed, a new XML file is required. However, such a new XML file cannot ensure the continuity of the media data as described above.
Accordingly, an aspect of the present disclosure is to provide a device and a method for transmitting/receiving scene composition information in a multimedia communication system.
Another aspect of the present disclosure is to provide a device and a method for transmitting/receiving scene composition information, created in a form in which multimedia attribute information and spatial-temporal information are separated from each other, in a multimedia communication system.
In accordance with one aspect of the present disclosure, a method of transmitting scene composition information by a scene composition information transmitting device in a multimedia communication system is provided. The method includes: creating the scene composition information including media attribute information and spatial-temporal information; and transmitting the scene composition information, wherein the media attribute information and the spatial-temporal information are separated into separate formats. In accordance with another aspect of the present disclosure, a method of receiving scene composition information by a scene composition information receiving device in a multimedia communication system is provided. The method includes: receiving the scene composition information including media attribute information and spatial-temporal information; and displaying a scene using the scene composition information, wherein the media attribute information and the spatial-temporal information are separated into separate formats.
In accordance with another aspect of the present disclosure, a device for transmitting scene composition information in a multimedia communication system is provided. The device includes: a control unit that creates the scene composition information including media attribute information and spatial-temporal information; and a transmitting unit that transmits the scene composition information, wherein the media attribute information and the spatial-temporal information are separated into separate formats.
In accordance with another aspect of the present disclosure, a device for receiving scene composition information in a multimedia communication system is provided. The device includes: a receiving unit that receives the scene composition information including media attribute information and spatial-temporal information; and a control unit that makes a control to display a scene using the scene composition information, wherein the media attribute information and the spatial-temporal information are separated into separate formats.
The present disclosure has an effect of making it possible to transmit/receive scene composition information in a multimedia communication system. Furthermore, the present disclosure has an effect of making it possible to transmit/receive scene composition information, created in a form in which media attribute information and spatial-temporal information are separated from each other, in a multimedia communication system. Moreover, the present disclosure has an effect of making it possible to transmit/receive scene composition information including multimedia initialization information in a multimedia communication system.
A method of providing scene composition information with initialization information for a multimedia service according to the present disclosure may be usefully utilized for consuming the scene composition information in a broadcasting environment. Furthermore, a method of independently composing and updating a part of a scene according to the present disclosure may be utilized in various services such as a multi-view or an N-screen on account of independently using the part of the scene. In addition, in making it possible to maintain continuity of media even when all or a part of a scene is changed, a scene-composition-information transmitting/receiving method according to the present disclosure has an effect of suggesting a direction for development of other multimedia service technologies requiring a scene composing method.
Hereinafter, an embodiment of the present disclosure will be described with reference to the accompanying drawings. In describing the present disclosure, detailed descriptions related to well-known functions or configurations will be omitted when they may make subject matters of the present disclosure unnecessarily obscure.
The present disclosure provides a device and a method for transmitting/receiving scene composition information in a multimedia communication system.
Furthermore, the present disclosure provides a device and a method for transmitting/receiving scene composition information, created in a form in which media attribute information and spatial-temporal information are separated from each other, in a multimedia communication system.
Hereinafter, in describing the present disclosure, the multimedia communication system is assumed to be, for example, an MPEG (Moving Picture Experts Group) Media Transport (MMT) system, and it is apparent that the multimedia communication system may be an Evolved Packet System (hereinafter, referred to as ‘EPS’), a Long-Term Evolution (LTE) mobile communication system, an Institute of Electrical and Electronics Engineers (IEEE) 802.16m communication system, or the like as well as the MMT system.
In the present disclosure, a device and a method will be described for transmitting and receiving scene composition information, which is presented using, for example, eXtensible MarkUp Language (XML), in a multimedia communication system. However, the device and the method for transmitting and receiving scene composition information, proposed by the present disclosure, may be applied as they are even when scene composition information presented using other formats as well as XML is used.
Scene composition information newly proposed by the present disclosure is defined as Composition Information (hereinafter, referred to as ‘CI’), and in displaying various pieces of media data on one terminal, the CI represents information expressing time and a space on a screen the media data is displayed and information explaining an associative relationship between the media data displayed using the information expressing the time and the space on the screen the media data is displayed.
Media data to which the CI may be applied, such as video data, audio data, image data, text data, and the like, is defined as an asset. A list of assets used to compose one scene in a multimedia service is defined as List of Asset (hereinafter, referred to as ‘LoA’).
Information required for accessing an asset and information required for accurately analyzing a received asset and displaying it are defined as Asset Information (hereinafter, referred to as ‘AI’). Here, the information required for accessing the asset represents an address of a media source, and may be, for example, a Uniform Resource Identifier (hereinafter, referred to as ‘URI’). The information required for accurately analyzing the received asset and displaying it may include a type, a format, and the like of media, and, for example, when media data is video data, may include a profile, a level, and the like corresponding to a media format.
A set of spatial information and temporal information for each of assets included in CI is defined as Spatial and Temporal Information of Asset (hereinafter, referred to as ‘STIA’).
An entire area where media data is displayed on a screen of a terminal is defined as a scene, and one scene includes one or more areas. Here, each area may be a partial area of the scene. Spatial information for a scene, an area, and an asset is defined as Spatial Information (hereinafter, referred to as ‘SI’), and temporal information for the scene, the area, and the asset is defined as Temporal Information (hereinafter, referred to as ‘TI’).
Furthermore, in using CI in a multimedia service, the present disclosure proposes a method of separating AI from STIA and providing it, a method of dividing a scene into areas and composing and managing the areas independently of the scene, and a method of maintaining continuity of an asset even when a scene or an area is changed.
A process of presenting an asset using CI in an MMT system according to an embodiment of the present disclosure will be described with reference to
Referring to
When the CI is presented as described above with reference to
Furthermore, when the CI is presented as described above with reference to
With reference to
Referring to
Accordingly, as illustrated in
With reference to
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Which area each of the areas represents within the corresponding scene should be presented, and therefore, SI of the corresponding area is included in the CI. Furthermore, the CI includes the SI of the scene in order to provide a criterion required for presenting the SI of each of the areas.
Furthermore, in order to reduce duplicate presentation of the SI, SI of the asset identical to the SI of the corresponding area in which the asset is included may be omitted.
As described above, the CI structure illustrated in
With reference to
In the STIA structure illustrated in
Likewise to this, in the STIA structure illustrated in
With reference to
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With reference to
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The CI structure illustrated in
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The control unit 1013 controls overall operations of the CI transmitting device. The control unit 1013 makes a control to perform overall operations related to an operation of transmitting CI for implementing, particularly, an LoA and STIA according to an embodiment of the present disclosure as separate formats. Here, the overall operations related to the operation of transmitting the CI are the same as those described with reference to
The receiving unit 1011 receives various types of signals from a CI receiving device, etc. under the control of the control unit 1013. Here, the various types of signals received by the receiving unit 1011 are the same as those described with reference to
The transmitting unit 1015 transmits various types of signals to the CI receiving device, etc. under the control of the control unit 1013. Here, the various types of signals transmitted by the transmitting unit 1015 are the same as those described with reference to
The storage unit 1017 stores the various types of signals received by the receiving unit 1011, and various types of data required for an operation of the CI transmitting device, particularly, information related to the operation of transmitting the CI.
Meanwhile, although the receiving unit 1011, the control unit 1013, the transmitting unit 1015, the storage unit 1017, and the output unit 1019 are implemented as separate units in
With reference to
Referring to
The control unit 1113 controls overall operations of the CI receiving device. The control unit 1013 makes a control to perform overall operations related to an operation of receiving CI for implementing, particularly, an LoA and STIA according to an embodiment of the present disclosure as separate formats. Here, the overall operations related to the operation of receiving the CI are the same as those described with reference to
The receiving unit 1111 receives various types of signals from a CI transmitting device under the control of the control unit 1113. Here, the various types of signals received by the receiving unit 1011 are the same as those described with reference to
The transmitting unit 1115 transmits various types of signals to the CI transmitting device under the control of the control unit 1113. Here, the various types of signals transmitted by the transmitting unit 1115 are the same as those described with reference to
The storage unit 1117 stores the various types of signals received by the receiving unit 1111, information related to operations of the CI receiving device, and the like.
Meanwhile, although the receiving unit 1111, the control unit 1113, the transmitting unit 1115, and the storage unit 1117 are implemented as separate units in
Meanwhile, although the specific embodiments have been described in the detailed descriptions of the present disclosure, it is apparent that various modifications can be made without departing from the scope of the present disclosure. Accordingly, the scope of the present disclosure shall not be determined by the above-described embodiments, and should be determined not only by the following claims but also by equivalents thereof.
Number | Date | Country | Kind |
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10-2012-0010870 | Feb 2012 | KR | national |
Filing Document | Filing Date | Country | Kind |
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PCT/KR2013/000890 | 2/4/2013 | WO | 00 |