KR20140124678A - Methods and apparatuses of augmenting content provision in push mechanism for smart tv - Google Patents

Abstract

According to the present invention, push content is transmitted according to a transmission schedule of push content created using at least one of metadata, user list, user status information, and network status, thereby minimizing a change in specification for transmission of a broadcast program, To provide an augmented content providing method that overcomes the above problems.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of providing a push-type augmented content for a smart TV,

The present invention relates to a method of providing augmented content, and more particularly, to a method of providing augmented content to be used in addition to broadcast content.

There are many ways to provide enhanced content in the use of smart TVs. Currently, a method of providing augmented content is a method in which a viewer's receiver downloads an augmented content from an augmented content server based on metadata received from a broadcasting network. The received augmented contents are overlaid on the broadcast screen and output.

The augmented contents are contents directly or indirectly related to the broadcasting programs and help viewers watch programs in various aspects. For example, the health-related program can additionally provide the constitutional information of the human body, the anatomy of the human body, the biochemical principles, etc., and can also include advertisements for related health foods. These contents include visual contents such as text / image, moving picture, 2D / 3D animation, and auditory contents such as sound and movement data provided in the form of 4D. As described above, a broadcast using a broadcast program and an augmented content together can be called an augmented broadcast.

However, the conventional augmented broadcasting has a problem that the augmented contents are downloaded based on the metadata received by the broadcasting receiver, so that a delay occurs for displaying the augmented contents.

It is an object of the present invention to provide a method for transmitting an augmented content that effectively conveys an augmented content while maintaining a minimum change in a previous system in a broadcast system for transmitting augmented content.

The present invention relates to an enhancement broadcasting transmission apparatus for transmitting broadcast contents and augmented contents, the apparatus comprising: a transmission unit configured to transmit a push content including augmented content used in addition to use of broadcast content and metadata indicating a relationship between the broadcast content and the augmented content Wherein the push server unit provides push content using at least one of a user list, user status information and network status information.

 The push server unit may include a user list storage unit for managing the user list, and the user list storage unit may include at least one of service availability of the push content, service method, and attributes of the push content to be served have.

The push server unit may further include a user state management unit for managing the user state information, and the user state management unit may re-determine the method of providing the push content provided to the user when a predetermined time has elapsed using the timer .

 The user state management unit may control the provision of the push content according to the memory state of the enhancement broadcasting receiving apparatus of the user.

 The push server may further include a network status management unit, and the push server may control transmission of the push content using the network status information generated by the network status management unit.

Wherein the push server further comprises a scheduler for generating a transmission schedule of the push content using at least one of the metadata, the user list, the user status information and the network status information, The push content can be transmitted.

According to another aspect of the present invention, there is provided an enhancement broadcast receiving apparatus for receiving broadcast content, the apparatus comprising: a broadcast content receiving unit for receiving the broadcast content; And a push content receiving unit including meta data and augmented content, and receiving a push content that is scheduled according to the meta data value and transmitted together with the broadcast content.

The push content receiving unit may transmit information related to at least one of a push content subscription of the user, an augmented content service registration, and viewing of broadcast content to the push content server.

 The push content receiving unit may transmit a user registration message including at least one of communication address information, user information, registration time information, and registration channel information of the receiving apparatus to the broadcast transmitting apparatus.

 The user information of the user registration message includes a user ID. When the TV or TV watching program is turned on, the user ID is the ID of the default user. When the user explicitly logs on, the user ID is the ID of the logged- , The preset user registration timer expires, or the user changes the channel, the user ID may be the ID of the current user.

According to another aspect of the present invention, there is provided a method of transmitting push content to a push server for transmitting push content, the method comprising the steps of: There is provided a push content transmission method for providing a content using at least one of a user list, user status information, and network status information, and a computer-readable recording medium recording a program for causing the computer to execute the method.

 The user list may include at least one of service availability of the push content, service method, and attributes of the push content to be serviced.

 The push content transmission method may use a timer to re-determine the method of providing the push content provided to the user at the timeout.

The push content transmission method may determine at least one of whether to provide the push content, the attribute of the push content, and the method of providing the push content according to a memory state of the enhancement broadcast receiving apparatus.

 The push content transmission method may control at least one of a transmission amount, a transmission time, an attribute, and a transmission rate of the push content using the network status information.

 The push content transmission method may generate the transmission schedule of the push content using at least one of the metadata, the user list, the user status information and the network status.

According to another aspect of the present invention, there is provided a method for providing enhanced content in a broadcast receiving apparatus that receives broadcast content, the method comprising the steps of: storing metadata and augmented content; And a computer-readable recording medium storing a program for causing the computer to execute the method.

 The augmented content providing method may transmit information related to at least one of a push content subscription of a user, an augmented content service registration, and viewing of a broadcast content to a push content server.

The enhanced content providing method may transmit a user registration message including at least one of communication address information, user information, registration time information, and registration channel information of a receiving apparatus to a broadcast transmitting apparatus.

The user information of the user registration message includes a user ID. When the TV or TV watching program is turned on, the user ID is the ID of the default user. When the user explicitly logs on, the user ID is the ID of the logged- , The preset user registration timer expires, or the user changes the channel, the user ID may be the ID of the current user.

The method for providing enhanced content according to the present invention is a method for transmitting a push content in accordance with a transmission schedule of push content created using at least one of metadata, user list, user status information and network status, But it has the effect of overcoming the delay of the augmented broadcasting.

Also, it is possible to stably cope with a change in the status of the network by allowing the augmented broadcasting sender to have major control rights related to the augmented content provision.

1 is a block diagram of an enhanced broadcast transmission / reception system according to an embodiment of the present invention.
FIGS. 2A to 2C are diagrams showing an arrangement of broadcast contents and augmented contents displayed on a display unit of an enhanced broadcast receiving apparatus according to an embodiment of the present invention.
3A is a diagram illustrating a structure of push content according to an embodiment of the present invention.
3B is a diagram illustrating a structure of metadata according to an embodiment of the present invention.
4A and 4B are block diagrams of a system for transmitting and receiving an enhanced broadcast according to an embodiment of the present invention.
5 is a detailed block diagram of an enhancement broadcast transmitting apparatus according to an embodiment of the present invention.
FIG. 6 is a functional block diagram of the enhancement broadcast transmitting apparatus shown in FIG. 5, and FIG.
7 is a flowchart illustrating a procedure for providing an enhanced broadcast push service according to an embodiment of the present invention.
8 is a diagram showing a relationship between meta data, network status, and schedule of push content.
9 is a diagram illustrating a result of scheduling push contents by a scheduler according to an embodiment of the present invention.
10 is a flowchart illustrating steps for providing push content in accordance with one embodiment of the present invention.
11 is a flowchart illustrating a step of managing a user state by an augmented-content transmitting apparatus according to an embodiment of the present invention.
12 is a diagram illustrating a structure of a user registration message transmitted from an augmented broadcast receiving apparatus to an augmented broadcast transmitting apparatus according to an embodiment of the present invention.
13 is a diagram illustrating a process of transmitting a user registration message by an augmented broadcasting receiving apparatus according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

1 is a block diagram of an enhanced broadcast transmission / reception system according to an embodiment of the present invention. The augmented broadcast transmitting and receiving system includes an augmented broadcast transmitting apparatus 100 and an augmented broadcast receiving apparatus 200. The augmented broadcast transmitting apparatus 100 and the augmented broadcast receiving apparatus 200 receive and transmit data through a broadcasting network or a communication network have.

The enhanced broadcast transmitting apparatus 100 may include a broadcast transmitting apparatus of a conventional TV broadcasting station and a device capable of transmitting broadcast contents through a communication network. The enhanced broadcast transmitting apparatus 100 provides the augmented contents in addition to the broadcast contents. There are two or more entities operating or operating the enhanced broadcast transmission apparatus 100, and each operator or operator can provide the same or different broadcast contents or augmented contents.

The enhanced broadcast receiving apparatus 200 may include a broadcast / communication processing unit 201 and a display unit 230. The enhanced broadcast receiving apparatus 200 receives the broadcast content and the augmented content from the augmented broadcast transmitting apparatus 100 and provides the augmented broadcast to the viewer using the display unit 230. [

The augmented contents may be provided in the form of simple data and may be overlaid on the TV program and outputted. Alternatively, the augmented contents may be provided in the form of an application program so that the application program is overlaid on the TV program to output the augmented data. It is called augmented broadcasting that a broadcast program and an augmented content are used together.

The overlay output occupies part of the screen in a visual way, audibly takes up a part of the sound, and is simultaneously provided in parallel with the existing 4D motion provided by the broadcast program in 4D motion. At this time, a portion of the existing broadcast program contents may be substituted.

2A to 2C are diagrams showing an arrangement of a broadcast content 231 and an augmented content 232 displayed on the display unit 230 of the enhancement broadcast receiving apparatus 200 according to an embodiment of the present invention. The display unit 230 can overlay the broadcast content 231 and the augmented content 232 and output the overlay. The overlay may appear in the display portion 230 in various formats. The output contents of the broadcast contents 231 and the enhancement contents 232 may be completely divided on the display or a part of the broadcast contents 231 may be hidden by the augmented contents 232 as shown in FIG. The augmented contents 232 output on the broadcast contents 231 may be expressed in a translucent manner so that the broadcast contents 231 and the augmented contents 232 may be displayed together.

Figure 3A illustrates the structure of push content in accordance with one embodiment of the present invention. The push content according to an embodiment of the present invention includes metadata and augmented content.

The augmented contents represent contents that are additionally provided to broadcast contents including visual contents such as text / image, moving picture and 2D / 3D animation, auditory contents such as sound, and motion data provided in 4D form.

FIG. 3B shows a structure of metadata according to an embodiment of the present invention. Metadata represents the relationship between broadcast content and augmented content. Metadata describes a method for providing augmented content based on broadcast content. The meta data may be the output timing of the augmented content in terms of time from when to when the augmented content is output based on the broadcast content. Or an output position or an output coordinate in which augmented content is displayed in a spatial viewpoint. In this case, when the graphic is graphic, it indicates the position of the augmented content on the screen or the position in space that can be implemented by two or more speakers . 4D can represent the spatial location of the sensation to convey to the user. The metadata may represent an output method. In the case of a graphic overlay, the metadata may be an overlay method as shown in FIGS. 2A to 2C, and in the case of a sound, a method of representing a sound of a broadcast content and an augmented content. It is a method of expressing a sound to make a sound of a broadcast content with a specific speaker, to output a sound of an augmented content to another speaker, a sound of a broadcast content and an augmented content together, or a sound represented by a broadcast content, . This is an extension of the concept of Figs. 2A to 2C with respect to sound in the three-dimensional space. Also, in the case of the sense of 4D, a method of outputting new sensory information based on the sensation transmitted from the broadcast contents can be used.

4A and 4B are block diagrams of a system for transmitting and receiving an enhanced broadcast according to an embodiment of the present invention. The augmented broadcast transmitting apparatus 100 according to an embodiment of the present invention can push the augmented contents to the augmented broadcast receiving apparatus 200 in a push manner together with the meta data. Push technology can be applied as a method of providing augmented content in augmented broadcasting.

The enhanced broadcast transmission apparatus 100 may include a push content server unit 110 and a broadcast system unit 120. The broadcast system 120 delivers the broadcast content to the enhanced broadcast receiving apparatus 200 through the broadcast network 121. The push content server unit 110 transmits the push content (metadata and augmented content) to the augmented broadcast receiving apparatus 200 through the communication network 111. [ The delivery of the push content can be controlled by the scheduling of the push content server unit 110. The push content is delivered to the broadcasting system unit 120, and the augmented broadcasting receiving apparatus may receive the push content from the broadcasting system unit 120. Since the normal broadcast programs operate in time, the push content server unit 110 may synchronize with the broadcast program. However, the push content server unit 110 may respond to the change of the broadcast program time or the image change, The broadcasting system unit 120 can control the delivery of the push content. The instruction for the push content may include a delivery time point of the push content, an output time point, an output position, an output coordinate, and an output method of the augmented content indicated by the metadata. The delivery time point of the push content may be commanded by the broadcasting system unit 120 or scheduled by the push content server unit 110 in consideration of a delay that the communication network 111 can take in comparison with the broadcasting network 121. [ That is, the push content can be delivered in advance in consideration of the delay so as to reach the required time.

The enhanced broadcast receiving apparatus 200 includes a broadcast content receiving unit 220, a push content client unit 210, and a display unit 230. The broadcast content receiving unit 220 receives the broadcast content through the broadcast network 121. [ The push content client unit 210 receives the push content through the communication network 111. [ The display unit 230 overlays the received broadcast content and the augmented content included in the push content according to the meta data included in the push content.

FIG. 4B illustrates a case where the broadcast system 120 of the enhanced broadcast transmission / reception system according to an embodiment of the present invention transmits broadcast content using the communication network 111 without using the broadcast network 121. FIG. In the embodiment of FIG. 4A, the enhanced broadcast receiving apparatus 200 transmits the broadcast content using the broadcast network 121, but in the embodiment of FIG. 4B, the enhanced broadcast receiving apparatus 200 transmits the broadcast content And the broadcast content receiving unit 220 of the augmented broadcast receiving apparatus 200 also receives the broadcast content using the communication network 122. [ Since both the broadcast system unit 120 and the push content server unit 110 use the communication network 111 at this time, the broadcast system unit 120 and the push content server unit 110 are logically separated, Since different contents are transmitted using the communication network 111, they can be multiplexed and sent together. The broadcasting system unit 120 and the broadcast content receiving unit 220 can transmit bidirectional data as well as the push content server unit 110 and the push content client unit 210. [

5 is a detailed block diagram of an enhancement broadcast transmitting apparatus 100 according to an embodiment of the present invention. FIG. 5 is a block diagram illustrating an enhancement broadcast transmitting apparatus 100 according to an exemplary embodiment of the present invention. The enhanced broadcast transmission apparatus 100 includes a push content unit, a user list, a scheduler, a network state management unit, a user state management unit, and a broadcast / communication transmission unit.

The push content portion stores push content including metadata and augmented content. The user list stores to which user this push content is to be provided. The scheduler schedules transmission of push content. The network state management unit observes the state of the network. The user state management unit manages the viewing state and the like of each user. The broadcast / communication transmitting unit may transmit the broadcast content, and may receive the push content from the push content unit and transmit the broadcast content and the push content together.

The user list stores and manages to which users the push content is to be provided. The users set up which push contents to be served when joining the augmented broadcasting service. The user can set the presence / absence and service method of the push content and the attribute of the push content to be provided. The tendency includes the data size of the push content, the quality quality, the providing type such as voice or video, the price of the push content, Whether the information is academic information, the age-specific user of the content, and the like. The user list can manage users who want to receive the content for each push content. Users can receive push content services for a fee and receive push content in the form of advertising instead of receiving useful push content for free. A user can subscribe to augmented broadcasting service for a plurality of programs of a plurality of broadcasting stations, while the augmented broadcasting transmitting apparatus 100 manages push contents for several channels for each broadcasting station. The enhanced broadcast transmitting apparatus 100 can manage the list of users who subscribe to each push content.

The network status management unit monitors the status of the network. The network status management unit manages the status of each network in which subscribers exist, and can manage statistical information on the possibility of delay that may occur when providing push contents. It can statistically manage the status of the network in terms of time characteristics of the network, day of the week, and date characteristics, and collect and manage information about the latest state of the network. The information collection and management of the network may be configured such that agents are installed for each of a plurality of networks, and agents collect status information and report the result to the augmented broadcast transmission apparatus 100. [ By doing this, you can see to what extent the push content should be sent in advance to synchronize with the broadcast content.

The user state management unit collects information on whether registered broadcast viewers are watching a broadcast. Even if the user is registered in the user list, there is no need to provide the push content if the user does not watch the broadcast or watch another channel.

In addition, the user state management unit can selectively transmit the push content according to the memory state by viewing the memory state of the enhancement broadcast receiving apparatus 200. [ The user state management unit can provide the push content with a large or small amount of data depending on the remaining amount of remaining capacity in the inner and outer memories installed in the enhancement broadcast receiving apparatus 200. [ The user can set whether or not the push content to be transmitted differs according to the remaining amount of memory when subscribing / registering the push content service. The user can check the remaining capacity of the memory of his / her AR broadcast receiving apparatus 200 and set the automatic change of the push content. The checking of the remaining amount of memory can be implemented by implementing a protocol for exchanging the remaining amount of memory between the push content server and the enhanced broadcast receiving apparatus 200 or by adding a field for informing the remaining amount of memory on the protocol for transmitting the push content.

In addition, the augmented broadcasting transmitting apparatus according to an embodiment of the present invention can use a soft timer in which a user is disconnected if re-registration is not performed within a predetermined time. If a soft timer is applied to the user's registration and the user's soft timer times out, the user may not provide a push service.

FIG. 6 is a functional block diagram of the enhanced broadcast transmission apparatus 100 shown in FIG. 5, which is applied to the enhanced broadcast transmission apparatus 100 shown in FIG. 4B. 4A and 4B, the broadcasting system unit 120 functions as a broadcasting / communication transmission unit in the enhanced broadcasting transmission apparatus 100 and is broadcasted to the broadcasting network 121 or the communication network 111 Content can be transmitted. In this case, the push content server unit 110 shown in FIGS. 4A and 4B may perform functions of a push content unit, a user list, a scheduler, a network state management unit, and a user state management unit.

7 is a flowchart illustrating a procedure for providing an enhanced broadcast push service according to an embodiment of the present invention. First, the user subscribes to the push content providing service of the augmented broadcasting (S110). The user can register the attributes of the broadcast program to be watched in the enhanced broadcast and the enhanced content to be serviced at the time of subscription to the push service. The attributes of the augmented content may include whether it is visual, auditory or 4D content, a data size limit of the content, an academic field of the content information, or difficulty of the content information. Next, when a viewer watches a broadcast, such as when watching a registered channel by turning on the TV, user registration is performed (S120). When user registration is performed, the augmented broadcasting transmitting apparatus 100 provides a push content service according to user information (S130).

8 is a diagram showing a relationship between meta data, network status, and schedule of push content. The push content server unit 110 receives the broadcast content from the broadcasting system unit 120 or creates a push content providing schedule using the metadata input by the operator. The scheduler sets the schedule to provide the push content by referring to the metadata and the network status. The scheduler can set a schedule for providing the push content by referring to the network status of the network status management unit based on the time of output of the augmented content of the meta data.

9 is a diagram illustrating a result of scheduling push contents by a scheduler according to an embodiment of the present invention. As shown in FIG. 9, the scheduler sets a schedule according to a time order to provide push contents, and can adjust a schedule according to the state of the network. The augmented broadcasting transmitting apparatus 100 can provide the push content to the users by referring to the user list for each scheduled push content.

10 is a flowchart illustrating steps for providing push content in accordance with one embodiment of the present invention. First, the augmented broadcasting transmitting apparatus 100 determines whether the first scheduled time in the schedule arranged in the time order as shown in FIG. 9 has been reached (S210). If the scheduled time has not been reached, it is delayed so that the time is reached. If the scheduled time is shown, the time can be scheduled.

When the scheduled time arrives, the user registration state of the user state management unit is checked for each user by referring to the registered user list for the push content scheduled to be pushed to the schedule (S220).

 If the user registration state is the ON state, the push content is provided to the user (S230). The step of providing the push content may selectively check the remaining amount of the memory of the enhancement broadcast receiving apparatus 200 and select and provide the type of the push content. In a simple example, when the augmented contents are character information expressed in a bitmap form, characters having different amounts of data can be provided by varying the size / resolution or the number of bits of color to be represented.

FIG. 11 is a flowchart illustrating a step of managing a user state by an apparatus for transmitting enhanced content according to an exemplary embodiment of the present invention. The user state can be managed in a soft state. First, a user registration message is received (S310). When the user registration message is received, it is determined whether the user is a registered user (S320). If the user is a registered user, a soft timer for user registration is initialized and reset (S330). If the user is not registered, the user status is not managed for the user (S331).

If the user does not receive the user registration message again for the time set by the soft timer after the last registration, a timeout occurs (S340). If a timeout occurs, it is determined that the user has not watched another channel that is not served by the enhanced broadcast transmission apparatus 100 or that the viewing of the broadcast program is terminated, and the user registration is canceled (S350).

The user registration cancellation step S350 may be immediately canceled or a soft timer timeout message may be sent to the enhanced broadcast receiving apparatus 200 to request and receive a user registration message from the enhanced broadcast receiving apparatus 200 . In this case, if the user registration message is not received for a predetermined time, the soft timer timeout message may be transmitted again a predetermined number of times and the user registration message may be waited for.

12 is a structure of a user registration message transmitted from the enhancement broadcast receiving apparatus 200 to the enhancement broadcast transmitting apparatus 100 according to an embodiment of the present invention. The user registration message transmitted from the enhanced broadcast receiving apparatus 200 to the enhanced broadcast transmission apparatus 100 may include a communication address, a user ID, a registration time, and a registration channel of the enhanced broadcast receiving apparatus 200. As described above, when a viewer watches a broadcast, such as when watching a channel registered by turning on the TV, user registration is performed. After user registration, the augmented broadcasting transmitting apparatus 100 provides a push content service according to user information.

The communication address of the enhanced broadcast receiving apparatus 200 indicates the address of the push content client 210 receiving the push service in the enhanced broadcast receiving apparatus 200. For example, in the case of the communication network 111 using TCP / IP, the IP address and the port number of the push content client 210 can be represented.

The user ID indicates the ID of the user to receive the augmented broadcasting service when a plurality of users use one enhancement broadcasting receiving apparatus 200. [ According to the embodiment, if the number of users is several, all of the users may be supported, only the most recently registered user among a plurality of users may be supported, or a user having a high priority among the users may be supported.

Since the user registration is managed in the soft state, the registration time can notify the time of registering the message and the time to register next. A value set in the timer of the push content server unit 110 as a timer for determining a timeout may be used or a registration time transmitted from the user registration message may be used. At this time, the registration time can be used either absolute time or relative time.

The registration channel indicates information of a channel that a viewer is watching when transmitting a user registration message. In the present invention, the channel information is included in the broadcasting contents provided by the broadcasting system unit 120 and may be included in the channel being viewed by the viewer, including the broadcasting station, the channel in the broadcasting country, and the program information.

13 is a diagram illustrating a process of transmitting a user registration message by an augmented broadcasting receiving apparatus according to an embodiment of the present invention. The augmented broadcast receiving apparatus 200 transmits a user registration message to the augmented broadcast transmitting apparatus 100. [ The enhanced broadcast receiving apparatus 200 registers a default user as a user when a TV or a TV watching program is turned on. When the user explicitly logs on, the logged on user is registered as a user, and when the preset user registration timer expires, the current user is registered as a user. At this time, the address of the push registration server of the enhanced broadcast transmission apparatus 100 may be set as a server of the current channel, and the user registration message may be transmitted.

When the user changes the channel, the current user is registered. The change of the channel can be set to have a channel change state after a predetermined time has elapsed. When the channel is changed, the address of the push registration server of the enhanced broadcast transmission apparatus 100 may be set to the server of the changed channel, and the user registration message may be transmitted.

The augmented broadcasting receiving apparatus 200 that has registered the user for the push content waits for the reception of the push content transmitted from the push content client unit 210. [ When the push content is received, the push content is overlaid on the broadcast content and output.

The combination of the above-described embodiments is not limited to the above-described embodiments, and various combinations of types as well as the above-described embodiments may be provided according to implementation and / or necessity.

In the above-described embodiments, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders or simultaneously . It will also be understood by those skilled in the art that the steps depicted in the flowchart illustrations are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention You will understand.

The foregoing embodiments include examples of various aspects. While it is not possible to describe every possible combination for expressing various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, it is intended that the invention include all alternatives, modifications and variations that fall within the scope of the following claims.

Claims (1)

CLAIMS 1. A method of transmitting push content by a push server transmitting push content,
The push content including the enhancement content used in addition to the use of the broadcast content and the metadata representing the relationship between the broadcast content and the enhancement content is provided using at least one of the user list, the user status information and the network status information To the push content.

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