KR20150068879A - Method and apparatus for providin ing broadcast content using two kinds of networks - Google Patents

Abstract

The present invention provides a method and an apparatus for providing broadcast contents whereby broadcast contents are provided by using two kinds of networks. According to the present invention, data of the broadcast contents can be transmitted through a first transmission network; recovery data for recovering data with an error can be transmitted through a second transmission network; the data of the broadcast contents transmitted through the first transmission network can be encoded.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for providing broadcast content using a heterogeneous network,

The present invention relates generally to a method and apparatus for providing broadcast content, and more particularly, to a method and apparatus for providing broadcast content using a heterogeneous network.

Errors may occur on the transport network when providing content data over a wired or wireless network. Channel coding data can be used to recover from errors that have occurred. As the capacity of the channel coding data is increased, the error recovery capability can be improved. Improved error recovery capability can broaden the area in which services can be provided.

Increasing the capacity of the channel coding data may cause a decrease in the capacity of the data of the contents. The reduction of the capacity of the data of the content may reduce the quality of service of the content.

Korean Patent Laid-Open No. 10-2003-0092657 (published on December 06, 2003) discloses an error correction coding apparatus for a digital broadcasting system. The present invention relates to a scrambler for eliminating the correlation of input data by mixing similar binary signal streams in a TS stream, a first RS encoder for performing block-based coding for error correction on data with no correlation, A second RS encoder for performing re-encoding on a block-by-block basis so that error correction can be performed on the rearranged data; a bit interleaver for re-distributing data re- A symbol mapper for mapping symbol-by-symbol data distributed on a bit-by-bit basis for transmission of data dispersed on a bit-by-bit basis, and a modulator for performing modulation suitable for transmission of symbol-mapped data.

One embodiment can provide a broadcast content providing apparatus and method.

One embodiment can provide a broadcast content providing apparatus and method using a heterogeneous network.

According to an aspect of the present invention, there is provided a method for broadcasting content, the method comprising: internally encapsulating broadcast content data; transmitting the internally enciphered data to a terminal requesting the broadcast content through a first transmission network; To the terminal through a second transport network, wherein the first transport network and the second transport network are different transport networks, and a method of providing broadcast content using heterogeneous transport networks is provided.

The first transmission network may be a broadcasting network.

The second transmission network may be a communication network.

The broadcast content providing method using the heterogeneous transport network may further include receiving information on the erroneous data from the terminal.

The transmitting of the recovery data may transmit the recovery data generated based on the received information.

The recovery data may be a part of data of the broadcast content corresponding to the data in which the error occurred.

The step of transmitting the recovery data may further include the step of externally encoding the data of the broadcast content according to a coding rate determined based on the state of the second transmission network.

The transmitting of the recovery data may further comprise generating the recovery data based on the externally encoded data.

The internalizing step may internally encode data of the broadcast content according to a code rate determined based on the state of the first transmission network.

The generated restoration data may be externally encoded data of the externally encoded data excluding the data of the broadcast content.

The recovery data may be used to recover the erroneous data by being appended to the internally ciphered data at the terminal.

The broadcast content providing method using the heterogeneous transport network may further include receiving information on the erroneous data from the terminal.

The information may include information indicating a state of the second transmission network.

The step of exaging may comprise determining the strength of the exogenous packet based on information indicative of the state of the second transport network.

The externalizing step may externalize data of the broadcast content based on the determined intensity of the externalization.

The broadcast content providing method using the heterogeneous transport network may further include receiving information on the erroneous data from the terminal.

The transmitting of the recovery data may include transmitting a part of the data of the broadcast content corresponding to the erroneous data to the terminal as the primary recovery data.

The transmitting of the recovery data may further include receiving information regarding the unrecovered data from the terminal.

The step of transmitting the recovery data may further include the step of externalizing a part of the data of the broadcast content corresponding to the unrecovered data.

The transmitting of the recovery data may further include transmitting secondary recovery data generated based on a part of the data of the externally broadcasted broadcast content to the terminal.

The recovery data may include the primary recovery data and the secondary recovery data.

The internally scrambled data may include an address at which the recovery data is provided, and the recovery data may be provided to the terminal through access to the address.

The recovery data may include reference information that is the same as the reference information of the data in which the error occurred.

The recovery data may indicate that the recovery data is data for recovering the erroneous data through the same reference information.

According to another aspect of the present invention, there is provided an apparatus for transmitting broadcast content, comprising: a storage unit for storing broadcast content data; an internal encoding unit for internalizing data of the broadcast content; a transmission unit for transmitting the internally encoded data to a terminal requesting the broadcast content through a first transmission network; And a communication unit for transmitting recovery data for recovering erroneous data among the data to the terminal through a second transmission network.

According to another aspect of the present invention, there is provided a broadcast content providing method comprising the steps of: receiving internalized data of broadcast content from a device providing the broadcast content through a first transmission network; decoding the internally- Transmitting information on the errored data to the device through a second transmission network, receiving recovery data for recovering the erroneous data from the device through the second transmission network, And recovering the erroneous data using the received restoration data. The present invention also provides a broadcast content receiving method using a heterogeneous transmission network.

The recovery data may be a part of data of the broadcast content corresponding to the data in which the error occurred.

The received restoration data may be data of an externally excluded data excluding the data of the broadcast content among the data externally edited by the device.

The step of recovering the erroneous data may include recovering the erroneous data by adding the recovered data to the internally scrambled data.

The method of receiving broadcast content using a heterogeneous transport network may further comprise detecting unrecovered data of the erroneous data.

The method may further include transmitting information about the unrecovered data to the apparatus through the second transmission network.

The broadcast content receiving method using a heterogeneous transmission network may further include receiving additional recovery data corresponding to the unrecovered data from the apparatus.

The additional recovery data may be generated based on a portion of the data of the externally broadcasted broadcast content.

The method of receiving broadcast content using a heterogeneous transport network may further include restoring the unrecovered data using the additional recovery data.

The detecting the erroneous data may further include determining a reproduction time point by recognizing the audio of the broadcast content.

The step of detecting the data in which the error has occurred may further include detecting the data in which the error occurred, based on the determined reproduction time.

According to another aspect of the present invention, there is provided a broadcast content providing apparatus, comprising: a communication unit for receiving internally encoded data of broadcast content from a device for providing the broadcast content through a first transmission network; and a communication unit for decrypting the internally- Wherein the communication unit transmits information on the errored data to the device through a second transmission network and transmits recovery data for recovering the errored data to the device through the second transmission network, And the processing unit recovers the erroneous data using the received restoration data. The present invention also provides a broadcast content receiving apparatus using a heterogeneous transmission network.

A broadcast content providing apparatus and method using a heterogeneous network are provided.

A broadcast content receiving apparatus and method using a heterogeneous network are provided.

There is provided a broadcast content providing apparatus for providing restoration data for recovering erroneous data.

FIG. 1 is a block diagram illustrating a system for providing broadcast content using a heterogeneous transport network according to an exemplary embodiment of the present invention.
2 is a block diagram of a broadcast content providing apparatus using a heterogeneous transport network according to an embodiment.
3 is a block diagram illustrating a broadcast content receiving apparatus using a heterogeneous transport network according to an exemplary embodiment of the present invention.
4 shows a signal flow diagram of a broadcast content providing method using a heterogeneous transport network according to an embodiment.
5 shows a flow diagram of a method for transmitting recovery data according to an example.
6 shows a signal flow diagram of a method for transmitting recovery data according to an example.
FIG. 7 illustrates data transmitted to a broadcast content receiving apparatus according to an exemplary embodiment of the present invention.
8 shows reference information of data of broadcast content and reference information of restoration data according to an example.

In the following, embodiments will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

Various modifications may be made to the embodiments and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the description. It is to be understood, however, that the intention is not to limit the embodiments to the embodiments, but to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms used in the examples are used only to illustrate specific embodiments and are not intended to limit the embodiments. 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 embodiment belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. In the following description of the embodiments, a detailed description of related arts will be omitted if it is determined that the gist of the embodiments may be unnecessarily blurred.

FIG. 1 is a block diagram illustrating a system for providing broadcast content using a heterogeneous transport network according to an exemplary embodiment of the present invention.

The system for providing broadcast content may include a broadcast content providing apparatus 110 and a broadcast content receiving apparatus 120. The broadcast content providing apparatus 110 may be a server.

The broadcast content receiving apparatus 120 may be any one of a television (TV), a cellular phone, a smart phone, a personal computer (PC), a tablet PC, a notebook, and a laptop. The broadcast content receiving apparatus 120 may be a terminal.

The broadcast content providing apparatus 110 can provide broadcast content using the first transmission network 130. [ The provision of the broadcast content can be provided by transmitting the data of the broadcast content.

The broadcast content providing apparatus 110 may encode data of the broadcast content to transmit the broadcast content data through the first transmission network 130.

The broadcast content providing apparatus 110 can provide the broadcast content using the second transmission network 140. [ The data of the broadcast content transmitted using the second transmission network 140 may be all or part of the data of the broadcast content.

The broadcast content providing apparatus 110 may encode all or a part of the data of the broadcast content to transmit all or a part of the data of the broadcast content through the second transmission network 140. [

The first transmission network 130 and the second transmission network 140 may be different from each other. For example, the first transmission network 130 may be a broadcasting network and the second transmission network 140 may be a communication network.

According to an exemplary embodiment, a broadcast content providing system can provide broadcast content using a heterogeneous transport network.

A method of providing broadcast content using a heterogeneous transport network will be described in detail below with reference to FIGS. 2 to 8. FIG.

2 is a block diagram of a broadcast content providing apparatus using a heterogeneous transport network according to an embodiment.

The broadcasting contents providing apparatus 110 includes a storing unit 210, an internal memory 220, a transmitting unit 230, a communication unit 240, And an externally-grooming unit 250. [0035]

The storage unit 210 may store data of broadcast contents. The broadcast content may be the content of a real-time broadcast and the content of a non-real-time broadcast.

The non-real-time broadcast content may be a video on demand (VOD) content.

The storage unit 210, the internal encoding unit 220, the transmission unit 230, the communication unit 240, and the external encoding unit 250 will be described below in detail with reference to FIGS. 4 to 8. FIG.

The technical contents described above with reference to FIG. 1 can be applied as it is, so a detailed description will be omitted below.

3 is a block diagram illustrating a broadcast content receiving apparatus using a heterogeneous transport network according to an exemplary embodiment of the present invention.

The broadcast content receiving apparatus 120 may include a communication unit 310, a processing unit 320, and a storage unit 330.

The communication unit 310 can receive data transmitted through the first transmission network 130 and the second transmission network 140. For example, the communication unit 310 can receive both data transmitted through a broadcasting network and data transmitted through a communication network.

The communication unit 310, the processing unit 320, and the storage unit 330 will be described in detail below with reference to FIG. 4 to FIG.

The technical contents described above with reference to Figs. 1 and 2 can be applied as they are, so that a more detailed description will be omitted below.

4 shows a signal flow diagram of a broadcast content providing method using a heterogeneous transport network according to an embodiment.

In step 405, the storage unit 210 may store the data of the broadcast content.

In step 410, the communication unit 310 may transmit a request for the broadcast content to the broadcast content providing apparatus 110. [

The communication unit 240 can receive a request for the broadcast content from the communication unit 310. [

Step 410 may not be performed. If step 410 is not performed, the following step 415 may be performed.

Before the step 415 is performed, the transmission unit 230 may measure the state of the first transmission network 130. For example, the state may include at least one of the existence of another apparatus using the first transmission network 130, the transmission rate of the data, and the maximum transmission distance of the data.

In step 415, the internal scaler 220 may encode the data of the broadcast content stored in the storage unit 210. The encoding performed by the internal encoding unit 220 may be named as inner encoding. That is, the internal scaler 220 can internally encode the data of the broadcast content.

The internal scaler 220 can determine the coding rate of the internal encoding based on the state of the first transmission network 130.

The internal scaler 220 may internally encode data of the broadcast content according to the determined code rate.

In operation 420, the transmitter 230 may transmit the internally enciphered data to the broadcast content receiving apparatus 120 requesting the broadcast content through the first transmission network 130.

The communication unit 310 may receive the internalized data of the broadcast content from the device 110 through the first transmission network 130. [

In step 425, the processing unit 320 may decode the internally scrambled data. The processing unit 320 can detect data in which erroneous data among the decoded broadcast content data is detected.

The processing unit 320 can recognize the audio of the broadcast content to be reproduced using the data of the received broadcast content.

The processing unit 320 can determine the playback time by recognizing the audio of the broadcast content.

The processing unit 320 can detect data in which an error has occurred based on the determined reproduction time point.

A method of determining the reproduction time point will be described in detail below with reference to Fig.

In step 430, the communication unit 310 may transmit information about the data in which the error occurred to the device 110 through the second transmission network 140. [

The internally scrambled data may include an address where recovery data is provided to recover the erroneous data. The communication unit 310 may request the provision of the recovery data through access to the address.

The address may be the address where the recovery data to be created is stored. For example, the address may be a Uniform Resource Locator (URL); URL).

The communication unit 240 can receive information about the data in which the error occurred from the broadcast content receiving apparatus 120. [

In step 435, the communication unit 240 may transmit the restoration data for recovering the erroneous data among the data of the broadcast content to the broadcast content receiving apparatus 120 through the second transmission network 140.

For example, the communication unit 240 may transmit the restored data to the broadcast-content receiving apparatus 120 by providing the URL where the restored data is stored to the broadcast-content receiving apparatus 120. [

The recovery data may be generated based on information about the received errored data.

The communication unit 310 may receive the recovery data for recovering the erroneous data from the device 110 through the second transmission network 140. [

The method of transmitting the restoration data will be described in detail with reference to Fig. 5 below.

In step 440, the processing unit 320 can recover the erroneous data using the received recovery data.

The processing unit 320 may recover the erroneous data by appending the recovered data to the internally enciphered data. A method of recovering erroneous data by adding recovery data to internally enciphered data will be described in detail below with reference to FIG.

The technical contents described with reference to Figs. 1 to 3 can be applied as it is, and a detailed description will be omitted below.

5 shows a flow diagram of a method for transmitting recovery data according to an example.

The step 435 of transmitting the above-described restoration data may include the following steps 510 to 530.

In step 510, the exigoder 250 may encode the data of the broadcast content. Also, the external scaler 250 can encode a part of the broadcast content corresponding to the data in which the error occurred.

The encoding performed by the outer scaler 250 may be named outer-encoding. That is, the external scaler 250 may externalize the data of the broadcast content.

The external scaler 250 may determine the code rate of the external encoding based on the state of the second transmission network 140. [

The state of the second transmission network 140 may be measured when receiving information on the data in which the error occurred. The information on the data in which the error has occurred may include data indicating the state of the second transmission network 140. [ For example, the data indicating the state may include at least one of time data and error rate data of the second transmission network 140. [

The external scaler 250 may externalize the broadcast content data according to a coding rate determined based on the state of the second transmission network 140. [

For example, a coding rate of 1/2 may indicate that the data of the externally corresponding to one bit of data of the broadcast content is one bit.

As another example, the coding rate of 5/6 may indicate that the data of the externally corresponding to 5 bits of data of the broadcast content is 1 bit.

As the state of the second transmission network 140 is worse, the data of the external encoding corresponding to the data of the same broadcast content may increase.

Also, the external scaler 250 may determine the strength of the external adaptation based on the information indicating the state of the second transmission network 140. As the state of the second transmission network 140 is worse, the intensity of the externalization may increase. That is, as the state of the second transmission network 140 is worse, the data of the external encoding corresponding to the data bits of the same broadcast content may increase.

If the intensity of the externalization is determined, the externalization unit 250 may externalize the data of the broadcasted content based on the intensity of the determined externalization.

In step 520, the exigoder 250 may generate recovery data based on the externally encoded data.

For example, the generated restoration data may be externally stored data of the broadcast content excluding the broadcast content data among the data that is externally broadcasted by the exigoder 250. The restoration data will be described in detail below with reference to Fig.

In step 530, the communication unit 240 may transmit the generated recovery data to the broadcast content receiving apparatus 120. [

The technical contents described above with reference to Figs. 1 to 4 can be applied as they are, so that a more detailed description will be omitted below.

6 shows a signal flow diagram of a method for transmitting recovery data according to an example.

Step 435 may include the following steps 605-640.

In step 605, the communication unit 240 may transmit a part of the data of the broadcast content corresponding to the erroneous data to the broadcast content receiving apparatus 120 using the data of the broadcast content stored in the storage unit 210 .

And a part of the data of the broadcast content corresponding to the data in which the error has occurred may be unencoded data.

The communication unit 310 can receive from the device 110 a part of the data of the broadcast content corresponding to the data in which the error occurred.

In step 610, the processing unit 320 may recover the erroneous data using a part of the received broadcast content data. For example, the recovery may be to replace the erroneous data with a portion of the data of the received broadcast content.

According to one embodiment, an error may occur while a step 605 is performed on part of the data of the broadcast content. If an error occurs even in a part of the data of the broadcast content, even if the step 610 is performed, the erroneous data may not be completely recovered.

Therefore, a method of recovering unrecovered data can be additionally performed.

A method of recovering unrecovered data is described with reference to the following steps 615 to 640.

If the following steps 615 through 640 are additionally performed, some of the data of the broadcast content of steps 605 through 610 may be primary recovery data. The primary recovery data may be the first sub-recovery data.

The recovery data in steps 615 through 640 may be secondary recovery data. Secondary recovery data may be second sub-recovery data.

In step 615, the processing unit 320 can detect data that has not been recovered even after recovering the erroneous data using the primary recovery data. That is, the processing unit 320 can detect data that has not been recovered, out of the data in which the error occurred.

In step 620, the communication unit 310 may transmit information regarding the unrecovered data to the device 110 via the second transmission network 140. [

The communication unit 240 can receive information regarding unrecovered data from the broadcast content receiving apparatus 120 through the second transmission network 140. [

In step 625, the exigoder 250 may externally externally part of the data of the broadcast content corresponding to the unrecovered data.

In step 630, the exigoder 250 may generate secondary recovery data based on a portion of the data of the externally broadcasted content. The secondary recovery data may be additional recovery data.

The secondary recovery data may be data of an externally encoded data excluding a part of the data of the broadcast content among the externally encoded data.

In step 635, the communication unit 240 may transmit the generated secondary recovery data to the broadcast content receiving apparatus 120. [

The communication unit 310 may receive secondary recovery data from the device 110 for recovering unrecovered data.

In step 640, the processing unit 320 may recover the unrecovered data using the secondary recovery data.

The processing unit 320 may recover the erroneous data using the primary repair data and the secondary repair data.

The recovery data in the above-described step 435 may include primary recovery data and secondary recovery data.

The technical contents described above with reference to Figs. 1 to 5 may be applied as they are, so that a more detailed description will be omitted below.

FIG. 7 illustrates data transmitted to a broadcast content receiving apparatus according to an exemplary embodiment of the present invention.

The first data 710 may include data 712 of the broadcast content and data 714 of the internal encoding.

For example, the first data 710 may be data of internally encoded broadcast content.

Internalizing the data 712 of the broadcast content may be to generate internalized data 714.

The internally encapsulated data 714 may be used to verify that the data 710 of the broadcast content has been successfully transmitted. In addition, internal enciphered data 714 may be used to recover all or some of the erroneous data.

The second data 720 may have the same data capacity as the first data 710. However, the data 724 of the internal data of the second data 720 may have a larger data capacity than that of the internal data 714 of the first data 710.

The capacity of the internal enciphered data 714 is larger than the internal enciphered data 712 for the same total capacity because the state of the first transmission network 130 in which the second data 720 is transmitted is larger than the capacity of the internal data 712, 710 may be worse than the state of the first transmission network 130 to which it is transmitted.

The third data 730 may include data 732 of broadcast content, data 734 of the internal encodings, and data 736 of the externals.

The third data 730 may be data to which restoration data is added to the data of the internally encoded broadcast content.

Data 734 of the internal encodings and data 736 of the external encodings may be used to recover from errors occurring in the data 732 of the broadcast content.

The third data 730 may further include externally encoded data 736 relative to the second data 720. Accordingly, the third data 730 can further recover the erroneous data compared to the second data 720.

The fourth data 740 may less recover the erroneous data than the third data 730. However, the fourth data 740 may carry more broadcast content data 742 than the third data 730.

The fifth data (750) may further recover data that has occurred in error compared to the fourth data (740). However, the fifth data 750 may use more communication cost than the fourth data 740.

The technical contents described above with reference to Figs. 1 to 6 can be applied as they are, so that a more detailed description will be omitted below.

8 shows reference information of data of broadcast content and reference information of restoration data according to an example.

The data 810 of the broadcast content may include a header 812 and content data 814.

The header 812 may include reference information of the content data 814. For example, the reference information may be at least one of a time stamp and counter information.

For example, the time stamp may indicate the time at which the data 814 of the content is played in real time. The counter information can indicate the time at which the content data 814 is reproduced from the start time of the broadcast content.

If an error occurs in the content data 814, recovery data 820 for recovering the content data 814 may be provided.

The recovery data 820 may include a header 822 and data 820 of the externalization.

The header 812 may include reference information of the exogenous data 820. For example, the reference information may be at least one of a time stamp and counter information.

The reference information may be displayed in an option field or an extension field of the header 812.

The header 822 may include the same reference information as the reference information of the header 812 of the data 814 of the content in which the error occurred. In other words, the recovery data 822 may include the same reference information as the reference information of the data 810 of the broadcast content in which the error occurred.

The recovery data 820 may indicate through the same reference information that the recovery data 820 is data for recovering erroneous data 810 of the broadcast content.

The technical contents described with reference to Figs. 1 to 7 can be applied as they are, so that a more detailed description will be omitted below.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

  While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

110: broadcast content providing apparatus
120: broadcast content receiving apparatus
130: first transmission network
140: second transmission network

Claims (19)

Internally encapsulating data of broadcast content;
Transmitting internally enciphered data to a terminal requesting the broadcast content through a first transmission network; And
Transmitting recovery data for recovering erroneous data among the data to the terminal through a second transmission network
Lt; / RTI >
Wherein the first transmission network and the second transmission network are different transmission networks. The method according to claim 1,
Wherein the first transmission network is a broadcasting network,
Wherein the second transport network is a communication network, and the second transport network is a heterogeneous transport network. The method according to claim 1,
Receiving information on the data in which the error occurred from the terminal
Further comprising:
Wherein the step of transmitting the recovery data comprises transmitting the recovery data generated based on the received information. The method of claim 3,
Wherein the recovery data is a part of data of the broadcast content corresponding to the data in which the error occurred. The method according to claim 1,
The step of transmitting the recovery data
A step of externally encoding data of the broadcast content according to a coding rate determined based on a state of the second transmission network; And
Generating the recovery data based on the externally encoded data
Further comprising:
Wherein the internal encoding step internally encodes data of the broadcast content according to a code rate determined based on a state of the first transmission network. 6. The method of claim 5,
Wherein the generated restoration data is externally encoded data excluding the data of the broadcast content from the externally encoded data. The method according to claim 6,
Wherein the recovery data is used for recovering the erroneous data by being added to the internalized data at the terminal. 6. The method of claim 5,
Receiving information on the erroneous data from the terminal, the information including information indicating a state of the second transmission network;
Further comprising:
Wherein the externalizing comprises:
Determining the strength of the externalization based on information indicating a state of the second transmission network
Lt; / RTI >
Wherein the externalizing step externalizes the data of the broadcast content based on the determined intensity of the externalization. The method according to claim 1,
Receiving information on the data in which the error occurred from the terminal
Further comprising:
Wherein the step of transmitting the recovery data comprises:
Transmitting a part of the data of the broadcast content corresponding to the erroneous data to the terminal as primary recovery data;
Receiving information regarding unrecovered data from the terminal;
Externalizing a portion of data of the broadcast content corresponding to the unrecovered data; And
Transmitting secondary recovery data generated based on a part of the data of the externally broadcasted broadcast content to the terminal
Lt; / RTI >
Wherein the recovery data comprises the primary recovery data and the secondary recovery data. The method according to claim 1,
Wherein the internally scrambled data includes an address where the recovery data is provided and the recovery data is provided to the terminal through access to the address. The method according to claim 1,
Wherein the recovery data includes reference information that is the same as the reference information of the data in which the error occurred,
Wherein the recovery data indicates that the recovery data is data for recovering the erroneous data through the same reference information. A storage unit for storing data of broadcast contents;
An internal encoding unit for internally encoding data of the broadcast content;
A transmitting unit for transmitting the internally enciphered data to a terminal requesting the broadcast content through a first transmission network; And
A communication unit for transmitting recovery data for recovering erroneous data among the data to the terminal through a second transmission network;
Wherein the broadcast content providing apparatus comprises: Receiving internally encoded data of broadcast content from a device providing the broadcast content via a first transport network;
Detecting error-prone data among the data of the broadcast content by decoding the internal encoded data;
Transmitting information on the errored data to the device through a second transmission network;
Receiving recovery data for recovering the erroneous data from the device through the second transmission network; And
And recovering the error data using the received recovery data
And transmitting the broadcast contents to the mobile terminal. 14. The method of claim 13,
Wherein the restoration data is a part of data of the broadcast content corresponding to the erroneous data. 14. The method of claim 13,
Wherein the received restoration data is data of exclusively excluded data of the broadcast content from data externally encoded by the device,
Wherein the step of recovering the erroneous data comprises restoring the erroneous data by adding the restoration data to the internally enciphered data. 14. The method of claim 13,
Detecting unrecovered data among the errored data;
Transmitting information about the unrecovered data to the device through the second transmission network;
Receiving additional recovery data corresponding to the unrecovered data from the device, the additional recovery data being generated based on a portion of data of the externally broadcasted content; And
Recovering the unrecovered data using the additional recovery data
Further comprising the steps of: receiving the broadcast content; 14. The method of claim 13,
The step of detecting the error-
Determining a reproduction time point by recognizing audio of the broadcast content; And
Detecting the data in which the error occurred based on the determined reproduction time point
And transmitting the broadcast contents to the mobile terminal. 18. A computer-readable recording medium containing a program for performing the method of any one of claims 13 to 17. A communication unit for receiving internally encoded data of broadcast content from a device providing the broadcast content through a first transmission network; And
A decoding unit for decoding the internally encoded data and decoding the internally encoded data,
Lt; / RTI >
Wherein the communication unit is configured to transmit the information about the errored data to the device through the second transmission network and receive recovery data for recovering the errored data from the device through the second transmission network,
Wherein the processing unit restores the erroneous data using the received restoration data.

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