TWI410135B - Apparatus and method for transmitting/receiving transport stream in a digital broadcasting system - Google Patents

Abstract

Disclosed is an apparatus and a method of transport stream transmission/reception for transmitting/receiving push data through a transport stream in a broadcast system. To this end, a transmission apparatus encodes push data by using an error correction scheme, interleaves the encoded push data according to an interleaving pattern, multiplexes the data in a TS generated for each of multiple contents, and then transmits the multiplexed data, and a reception apparatus extracts push data from a received TS, de-interleaves the extracted push data, and acquires desired push data through forward error correction.

Description

Apparatus and method for transmitting/receiving a transport stream in a digital broadcast system

The present invention relates to an apparatus and method for transmitting/receiving a transport stream in a broadcast system, and more particularly to an apparatus and method for transmitting/receiving push data via a transport stream.

Today, digital broadcasting has become a new and successful example of the era of broadcast-communication convergence. The digital broadcast service is a service that can provide various additional services while providing digital audio/video services through cables, satellites, and ground waves. Unlike existing broadcast services that only allow users to receive and view images transmitted via a transom via a service, digital broadcast services allow the use of two-way communication, such as financial services, Internet search, movies, electronic transaction, high quality television, ultra high speed Internet, Internet phone, video phone and many more.

However, due to the normal bandwidth problem, digital broadcast systems are not able to provide Video on Demand (VoD) services or Near Video on Demand (NVoD) services.

In order to solve the above problem, by using a relatively low bandwidth, the user terminal configured with the storage medium stores various materials (including video/V/D) for the VoD service or the NVoD service in advance without limiting the time. Audio data). Then, at the desired time, the user can receive the VoD service or the NVoD service by the stored data.

Such a service that causes a user to receive, store, and view data corresponding to a desired VoD service or NVoD service regardless of time is referred to as a push service.

However, in order to use the above-described push service, most user terminals are equipped with a tuner for a push service while being configured with a tuner for a typical content service. In addition, sufficient time for receiving push information should be reliable.

In particular, in order to perform a push service together when performing a Digital Video Recording (DVR) service for recording television (Television, TV) content, it is necessary to increase the number of tuners.

Therefore, it can be said that the digital broadcasting system urgently needs to arrange a scheme for satisfying various service needs of an observer without adding hardware. Here, it goes without saying that the service provided according to the needs of the observer should be provided stably.

Accordingly, the present invention has been made to solve the above problems in the prior art, and in order to improve the transmission possibility of push data in a digital broadcasting system, the present invention provides an apparatus and method for transport stream transmission/reception.

In addition, the present invention also provides a method for transmitting the push broadcast resource by using a forward error correction technology and an interleaving technology in a digital broadcast system. Device and method of material.

Moreover, the present invention also provides an apparatus and method for receiving the push data in a digital broadcast system by employing a forward error correction technique and an interleaving technique.

According to one aspect of the present invention, a method of transmitting a transport stream in a digital broadcast system is provided, the method comprising: outputting n encoded push broadcasts from k push data packets by employing a forward error correction technique a data packet; interleaving the encoded push data packet according to a predetermined interlace pattern; and multiplexing the interleaved push data packet and transmitting in each of the transport streams generated according to each of the plurality of contents A multiplexed transport stream.

According to another aspect of the present invention, there is provided an apparatus for transmitting a transport stream in a digital broadcast system, the apparatus comprising: an encoder for outputting n from k push data packets by employing a forward error correction technique Encoded push data packets; an interleaver for interleaving the encoded push data packets according to a predetermined interlace pattern; and a multiplexer for each of the generated according to each of the plurality of contents In the transport stream, multiplexed interleaved push data packets and transported multiplexed transport streams.

According to another aspect of the present invention, there is provided a method of receiving a transport stream in a digital broadcast system, the method comprising: receiving a tuned transport stream from a transport stream generated according to each of the plurality of contents; Obtaining an interleaved push data packet that has been multiplexed in the received transport stream from the received transport stream; de-interleaving the retrieved push data by deinterleaving according to a predetermined interlaced pattern Packet to get encoded Pushing the data packet; and performing error correction of the n obtained encoded push data packets by using a forward error correction technique, thereby outputting k push data packets.

According to another aspect of the present invention, there is provided an apparatus for receiving a transport stream in a digital broadcast system, the apparatus comprising: a de-multiplexer for generating from each of a plurality of contents Receiving the tuned transport stream in the transport stream, and demultiplexing the received transport stream, thereby extracting the interleaved push data packet; the deinterleaver is used to deinterlace the buffer according to the predetermined interlace pattern Extracting the data packet to obtain the encoded push data packet; and decoding the decoder for performing error correction of the n obtained encoded push data packets by using a forward error correction technique Output k push data packets.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

In the following description, well-known functions and descriptions of the configurations will not be described herein. In addition, in the following description of the invention, various specific definitions of the following description are merely to be understood as an understanding of the invention, and it is understood by those of ordinary skill in the art that the invention can be practiced without such a definition.

The following description of an exemplary embodiment of the present invention will discuss such a scheme, multiplexing and transmitting a push material to each piece of content material. The generated transport stream (Transport Stream, TS), and the pushed data are extracted from the TS that has been multiplexed.

Furthermore, the following description of an exemplary embodiment of the present invention will discuss in detail a scheme for processing and transmitting/receiving the push material in order to increase the transmission possibility of the push material to be multiplexed in the TS.

In other words, the following description of an exemplary embodiment of the present invention will discuss the operation of the transmitter in detail, which encodes the push data by employing an encoding technique with Forward Error Correction (FEC) performance. And the transmitter interleaves the encoded push data.

Furthermore, the following description of an exemplary embodiment of the present invention will discuss in detail the operation of the receiver, which deinterleaves the push data received by the receiver and via FEC techniques, via de-interlaced push data. Error correction to recover the desired push data.

Meanwhile, in the following description of an exemplary embodiment of the present invention, it is assumed that H.264 is used as a coding technique for compression of content material and push material. Therefore, the TS generated by the compression of the content material and the push of the material is expected to have the form of MPEG2 TS. However, it is not to say that the exemplary embodiment of the present invention is only used for a digital broadcasting system that compresses content material and pushes data by employing H.264. That is, example embodiments of the present invention are also applicable to H.264 and various compression techniques that can be used in digital broadcast systems.

Hereinafter, exemplary embodiments of the present invention will be described in conjunction with the drawings.

A. Broadcasting system

FIG. 1 is a schematic diagram of a structure of a broadcast system according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the content providing server 110 receives and manages audio/video and various materials corresponding to various contents provided by the content provider. The content providing server 110 also manages incidental information about the content, including meta data. In addition, the content providing server 110 stores and manages push material for the push service.

The content providing server 110 encrypts the content material to be transmitted by using an encryption key provided by the secure server 120. This prevents the corresponding content service from being provided to an unauthorized viewer.

The content providing server 110 generates a TS by applying a predetermined compression technique to the material of each of the plurality of contents. Representative compression techniques used by content providing server 110 include the H.264 media format, which is a standard promoted by ISO and ITU. Further, the TS compressed via H.264 is called MPEG2 TS.

In order to generate a TS based on each content, the content providing server 110 multiplexes and transmits the push material compressed via a predetermined compression technique. At this time, by employing the FEC technique and the interleaving technique, the content providing server 110 generates a push data packet to be multiplexed using each TS. That is, the content providing server 110 generates the final push data packet by using the FEC technology to encode the push data packet to be transmitted and using the packet of a predetermined size to interleave the encoded push data packet. FEC The technique uses a predetermined interleaving pattern using a predetermined coding rate and interleaving technique.

Here, the FEC technique refers to a scheme of adding additional information (redundancy) to a character or a frame transmitter to be transmitted, thereby allowing the receiver to detect and correct errors by using additional information. FEC technology allows the receiver to self-correct errors.

Therefore, FEC technology is mainly used in a bad channel environment or in situations where high reliability is required. Even in the case of errors, FEC technology allows error correction without retransmission, so that it can achieve immediate processing as well as high throughput.

However, burst errors are prone to occur when data is transmitted only in accordance with FEC techniques.

Therefore, the content providing server 110 also uses an interleaving technique. In the interleaving technique, the data to be transmitted is interleaved as it is transmitted, so that even if burst errors occur during transmission, it is possible to improve the performance of data restoration.

The secure server 120 supports a security solution in a broadcast system. That is, the secure server 120 generates an encryption key required to decode the content and only provides the generated encryption key to the terminal of the user who is allowed to view the corresponding content. Further, the secure server 120 transmits the generated encryption key to the content providing server 110 so that the content providing server 110 can encrypt and transmit the corresponding content material. At the same time, according to the support security solution, the secure server 120 can be divided into a CAS server and a DRM server. CAS servo based on support security solution And DRM servers have different application embodiments due to their respective characteristics. For example, the CAS scheme is used for DTH, cable, IP TV, etc., and the DRM scheme is used for VoIP services. More specifically, the DRM scheme is a scheme for the regeneration of stored audio/video material or other material, or to prevent the user from setting a usage restriction period or after transmitting to another receiver.

The broadcast network 130 is a common name for transmitting a communication medium from the content providing server 110 to the user terminal. Broadcast network 130 may include the Internet, cable networks, satellites, terrestrial waves, and the like.

A Set Top Box (STB) 140 belonging to the user terminal receives the blocked TS transmitted via the broadcast network 130. The STB 140 retrieves the TS corresponding to the content desired by the viewer from the separated TS. At this time, the learned TS has a form of a media format compressed according to a predetermined compression technique. For example, the TS that has been captured may be an MPEG2 TS compressed by H.264.

The STB 140 restores the captured TS to become content material. In addition, the STB 140 provides recovered information to a display device, such as a television (Television, TV).

Normally, since the blocked TS is encrypted, in order to restore the content material, the STB 140 decrypts the encrypted TS. Therefore, the STB 140 retrieves the push data packet that has been multiplexed in the decrypted TS. At this time, the extracted data packet that has been captured has been compressed by a technique such as H.264.

Because the piggybacked data packet has been taken in accordance with the examples of the present invention. The embodiment is interleaved so that the content providing server 110 deinterlaces the decoded push data packets according to the interlace pattern for interleaving. Thus, any errors occurring during transmission are corrected by applying FEC techniques, and the error-corrected push data packets are retrieved and stored in the form of files in the recording medium.

In order to understand the compressed compressed content data, the content data is decoded from the push data packet and the STB 140, and the push data packet has been extracted from the content data. The decoded content material is then applied to the display device.

A television (TV) 150, which is an exemplary embodiment of the display device, outputs audio and video signals corresponding to the content material provided by the STB 140. In addition, the TV 150 receives audio and video signals corresponding to the push material stored in the recording medium by the viewer's needs.

B. Content provider server

2 is a diagram of the structure of a content providing server in accordance with an exemplary embodiment of the present invention. In the structure of the content providing server, the components illustrated in FIG. 2 include only some TSs for inserting the push data into the TS generated according to each content and outputting the TS to which the push data has been inserted. element. For the convenience of the description of the invention, other elements of the content providing server are omitted.

Referring to FIG. 2, the packetizer 210 receives the push data in the file format and the packetize file type push data to generate a push data packet.

With a coding scheme with FEC capability, according to a predetermined coding rate, The FEC encoder 220 encodes the push data packet. The push data packet has a media format (eg, MPEG2 TS) compressed by a predetermined compression technique such as H.264.

A representative coding scheme with FEC capabilities includes a block coding scheme as well as a non-block coding scheme. The block coding scheme includes a linear coding scheme (such as a Hamming code scheme, a Hadamard code scheme, and a Golay code scheme) and a cyclic coding scheme (such as a BCH code). Scheme and Rs code scheme). Further, the non-block coding scheme includes a turbo coding scheme and a convolutional coding scheme.

In addition, FEC-capable coding schemes have the characteristic that they not only output original data but also output parity data generated from the original data together with the original data. The size of the output parity data is determined by the coding rate used for encoding. If the coding rate (R) is k/n, it means that data of size k is input, and encoded data of size n is output. Here, the encoded data of size n includes k information bits and (n-k) co-located bits.

For example, if the coding rate (R) is 1/3, then one information bit and two parity bits are output in response to one input bit. Although the above exemplary embodiments are coded on a bit-by-bit basis, block coding may also be used in which coding is performed block by block in block coding, That is to say, encoding is performed on a packet by packet basis.

Interleaver 230 interleaves the push data packets that have been encoded by FEC encoder 220. The interleaving is performed according to a predetermined interlace pattern which is previously set between a transmitter and a receiver or supplied to the receiver as control information as needed.

At the same time, the interleaver 230 divides the encoded push data into a plurality of blocks, each block having a predetermined size, and interleaving the divided blocks block by block. Here, it is preferable to perform a depth interleaving so that the encoded push data packet can be transmitted over a long time interval.

In general, deep interleaving during data communication requires a significant amount of time in the data required for recovery, making the use of deep interleaving unfeasible. However, the push data packet does not require immediate data recovery and allows the entire data to be restored at the same time. Thus, depth interleaving can be used in an exemplary embodiment of the invention, which can improve the reliability of data segment loss during tuning.

The interleaved push data packets are input to the multiplexer 250. At this time, since the multiplexer 250 should be used for each content, the interleaved push data packets are respectively input to all the multiplexers 250 corresponding to the content.

At the same time, the content material provided by each content is input to the encoder 240. Encoder 240 is different from FEC encoder 220.

The encoder 240 compresses the content material in the type defined by H.264 and outputs the compressed material as MPEG2 TS. Here, the number of encoders 240 is configured in accordance with the number of various contents. Although the following description discusses only one encoder, it goes without saying that other encoders can operate in the same way.

The MPEG2 TS corresponding to the content material output by the encoder 240 is input to the multiplexer 250.

The multiplexer 250 multiplexes and outputs MPEG2 TS corresponding to the content material and MPEG2 TS corresponding to the push data packet. That is, the multiplexer 250 inserts the MPEG2 TS corresponding to the push data packet in the MPEG2 TS corresponding to the content material. It is apparent that the output material obtained by multiplexing the MPEG2 TS corresponding to the content material and the MPEG2 TS corresponding to the push data packet is also in the MPEG2 TS format.

The MPEG2 TS multiplexed by the multiplexer 250 is applied to a scrambler 260.

The scrambler 260 encrypts the multiplexed MPEG2 TS by using a scrambling code, and causes the encrypted MPEG2 TS to be IP-packed and output. The IP-packetized TS output from the scrambler 260 is input to the network switch 270 and then finally output to the broadcast network.

At the same time, the multiplexed MPEG2 TS can include multiple channels or multiple time slots. In this case, the scrambler 260 can scramble multiple channels or multiple time slots of the multiplexed MPEG2 TS by employing different scrambling codes, respectively.

3 is a control flow diagram of transmitting push material in a digital broadcast system, in accordance with an exemplary embodiment of the present invention.

Referring to FIG. 3, in step 310, the content providing server encapsulates the archive type push data and then outputs the split boot data. In step 312, the content providing server performs the FEC of the push data packet, from And generate an encoded push data packet. In step 314, the encoded push data packets are interleaved. In step 316, the interleaved push data packets are multiplexed with each TS generated according to each content, so that via multiplexing, the push data packets are inserted into each of the generated according to each content. In TS.

Next, in step 318, the content providing server generates the final MPEG2 TS, and in the final MPEG2 TS, the push data packet is inserted into the content based material. The MPEG2 TS that has been finally generated is scrambled by the scrambling code in step 320, and then transmitted in step 322.

C. User terminal

4 is a diagram of the structure of a user terminal in a digital broadcasting system according to an exemplary embodiment of the present invention.

Referring to Figure 4, the tuner 410 is tuned to the channel that the user has requested to view, and only the content material corresponding to the tuned channel is retrieved from the broadcast signal (i.e., MPEG2 TS packet) received via the broadcast network.

The Base Band Chip receives the MPEG2 TS type of content material retrieved by the tuner 410. In addition, the baseband chip converts the MPEG2 TS type content data into a Serial Digital Interface (SDI) signal, outputs the converted SDI signal, and extracts the MPEG2 TS type inserted into the MPEG2 TS type content material. Push data packet. The SDI signal includes a mixture of 4-channel digital audio signals and composite digital images as a digital signal standard with a transmission rate of 270 Mbps.

The baseband chip includes a de-scrambler 420 and a multiplexer 430.

The descrambler 420 descrambles the MPEG2 TS type of content material output from the tuner 410 by employing a predetermined scrambling code. The descrambled MPEG2 TS type content material is input to the multiplexer 430.

Meanwhile, the content material of the MPEG2 TS type output by the tuner 410 includes a plurality of channels or a plurality of time slots. In this case, the scrambler 420 can descramble the plurality of channels or time slots of the MPEG2 TS type of content material by employing different scrambling codes, respectively.

The multiplexer 430 separates the content material and the plurality of push data packets from the descrambled MPEG2 TS type of content material. That is, the multiplexer 430 retrieves a plurality of push data packets from the descrambled MPEG2 TS type of content material. In addition, multiplexer 430 provides a separate MPEG2 TS type of push data packet to deinterleaver 440.

The deinterleaver 440 deinterleaves the MPEG2 TS type push data packets based on a predetermined or pre-received interlace pattern. In addition, the deinterleaved push data packets are transmitted to the FEC decoder 450.

The FEC decoder 450 decodes the deinterleaved push data packets. The error performed by the FEC decoder 450 corresponds as much as possible to the operation of restoring the plurality of original push data packets via error correction. If at least k bits can be normally received from n bits generated by FEC decoding, the FEC decoder 450 can restore the original data. In actual operation, if more than 10 bits are received, 10~20% are received. The bit can completely restore the original data.

The push data packet obtained by the decoding of the FEC decoder 450 is applied to a de-packetizer 460. The depacketizer 460 decompresses the decoded push data packet and outputs the file type of push data.

The file type push data packet output from the depacketizer 460 is stored in the recording medium (storage unit) 470. At the request of the observer, the push data packet stored in the recording medium can be reproduced at any time. Here, the push material recorded in the recording medium is transmitted to the DRM module 480, in which the encryption of the push material is released (ie, decrypted), and the decrypted data is finally output.

At the same time, the content material separated by the multiplexer 430 and the last pushed material outputted from the DRM module 480 are decompressed by the deinterleaver 440 so that they are output as SDI type content material.

FIG. 5 is a control flow diagram of receiving push material in a digital broadcast system, according to an exemplary embodiment of the present invention.

Referring to FIG. 5, in step 510, the user terminal performs a tuning operation for extracting content data corresponding to the channel requested by the user from the broadcast signal received via the broadcast network.

Accordingly, the user terminal descrambles the retrieved MPEG2 TS type of content material in step 512 and retrieves a plurality of push data packets from the descrambled MPEG2 TS type of content material in step 514. The content material that has been captured by the push content data packet is converted into the SDI type of push data by decoding.

Further, in step 518, the user terminal deinterleaves the captured content data packet of the MPEG2 TS type based on the predetermined interlace pattern or the interlace pattern received from the transmitter. At the same time, in step 518, the user terminal performs error correction on the deinterleaved push data packet via FEC decoding.

Next, in step 520, the user terminal decompresses the push data packet restored by the decoding and outputs the push type data of the file type. In addition, in step 522, the user terminal stores the file type of the push data in the recording medium for later viewing according to the needs of the user.

According to an exemplary embodiment of the present invention, in the case where there is not enough bandwidth for the broadcast service, it is possible to push a larger amount of data by using a recording medium without adding a tuner or the like. Therefore, a satellite, cable or terrestrial radio wave service provider with limited bandwidth can only transmit a variety of multimedia without a one-way broadcast network.

According to the above-described exemplary embodiments of the present invention, the operation and structure of the method and apparatus for communication link alignment can be obtained by employing a retro-reflector in optical communication. While the invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

For example, for ease of explanation, the above-described exemplary embodiment of the present invention uses an A/V file as a push material. However, the push data can be various types of files that replace the A/V file. In other words, MPEG2 TS, AVI file grid The equations and the like generally correspond to system formats or standards for inserting A/V and data into a stream or archive. Here, MPEG2 TS is used as a streaming multiplex scheme at the transmission time, and can be stored for use as an archive to be used in place of the AVI archive.

Therefore, the push material used in the exemplary embodiment of the present invention has no relationship with the type of the archive, and in order to apply multiplexing in IP packets or similar packets and MPEG2 TS, in the above-described exemplary embodiment of the present invention The decapsulation of the push material has been implemented.

110‧‧‧Content providing server

120‧‧‧Security Server

130‧‧‧Broadcast network

140‧‧‧Video Box (Set Top Box, STB)

150‧‧‧TV (Television, TV)

210‧‧‧Separator

220‧‧‧FEC encoder

230‧‧‧Interlacer

240‧‧‧Encoder

250‧‧‧Multiplexer

260‧‧‧scrambler

270‧‧‧Network switch

310‧‧ ‧ Separate push data

312‧‧‧Package FEC

314‧‧‧Interlaced

316‧‧‧ Insert push information in each TS

318‧‧‧Generate the final MPEG2 TS

320‧‧‧scrambling

322‧‧‧Transfer

410‧‧‧Tuner

420‧‧ ‧ descrambler

430‧‧‧Multiplexer

440‧‧Deinterlacer

450‧‧‧FEC decoder

460‧‧‧Solution Separator

470‧‧‧recording media (storage unit

480‧‧‧DRM module

490‧‧‧Decoder

510‧‧‧Tune

512‧‧‧De-scrambling MPEG2 TS

514‧‧‧Drawing push data from MPEG2 TS

516‧‧‧Deinterlaced

518‧‧‧FEC decoding

520‧‧‧Unblocking

522‧‧‧Storage of decoded push data

FIG. 1 is a schematic diagram of a structure of a broadcast system according to an exemplary embodiment of the present invention.

2 is a diagram of the structure of a content providing server in accordance with an exemplary embodiment of the present invention.

3 is a control flow diagram of transmitting push material in a digital broadcast system, in accordance with an exemplary embodiment of the present invention.

4 is a diagram of the structure of a user terminal in a digital broadcasting system according to an exemplary embodiment of the present invention.

FIG. 5 is a control flow diagram of receiving push material in a digital broadcast system, according to an exemplary embodiment of the present invention.

410‧‧‧Tuner

420‧‧ ‧ descrambler

430‧‧‧Multiplexer

440‧‧Deinterlacer

450‧‧‧FEC decoder

460‧‧‧Solution Separator

470‧‧‧Recording media (storage unit)

480‧‧‧DRM module

490‧‧‧Decoder

Claims (16)

A method of transmitting a transport stream in a digital broadcast system, the method comprising: outputting n encoded push data packets from k push data packets by employing forward error correction techniques; according to a predetermined interlaced pattern Interleaving the encoded push data packet; and multiplexing the interleaved data packet in each transport stream generated according to each of the plurality of content, and transmitting the multiplexed Transport stream. A method for transmitting a transport stream in a digital broadcast system as described in claim 1, wherein the media format is defined by H.264, and the transport stream before the encoding and the push data are subjected to compression. A method of transmitting a transport stream in a digital broadcast system as described in claim 1 or 2, the method further comprising scrambling each of the transport streams, wherein the scrambling code has been multiplexed The pushed data packet that has been interleaved. A method for transmitting a transport stream in a digital broadcast system as described in claim 1, wherein each of the multiplexed transport streams includes a plurality of channels or a plurality of time slots, respectively A scrambling code to scramble the plurality of channels or the plurality of time slots. An apparatus for transmitting a transport stream in a digital broadcast system, the apparatus comprising: An encoder for outputting n encoded push data packets from k push data packets by employing a forward error correction technique; an interleaver for interleaving the encoded according to a predetermined interlace pattern Pushing a data packet; and a multiplexer for multiplexing the interleaved data packet in each transport stream generated according to each of the plurality of contents, and transmitting the multiplexed Transport stream. An apparatus for transmitting a transport stream in a digital broadcast system as described in claim 5, wherein the media format is defined by H.264, the transport stream input to the encoder, and the push The broadcast data is compressed. An apparatus for transmitting a transport stream in a digital broadcast system as described in claim 5 or 6, wherein the apparatus further comprises a scrambler for scrambling each of the transport streams, wherein the scrambling is performed The code has been multiplexed with the interleaved push data packet. An apparatus for transmitting a transport stream in a digital broadcast system as described in claim 7, wherein each of the transport streams that have been multiplexed includes a plurality of channels or a plurality of time slots, respectively, by using different a scrambling code that causes the scrambler to scramble the plurality of channels or the plurality of time slots. A method of receiving a transport stream in a digital broadcast system, the method comprising: receiving a tuned transport stream from a transport stream generated according to each of the plurality of content; Extracting, from the received transport stream, the interleaved push data packets that have been multiplexed in the received transport stream; the interleaved by the deinterlacing according to a predetermined interlace pattern Pushing the data packet to obtain the encoded push data packet; and performing error correction of the n obtained encoded push data packets by using the forward error correction technique, thereby outputting k push data Packet. A method for receiving a transport stream in a digital broadcast system as described in claim 9, wherein the media format is defined by H.264, the transport stream and the interleaved push that has been captured The broadcast data packet is compressed. A method of receiving a transport stream in a digital broadcast system as described in claim 9 or 10, further comprising: prior to extracting the interleaved push data packet, by using a predetermined scrambling code The descrambled received transport stream is descrambled. A method for receiving a transport stream in a digital broadcast system as described in claim 11, wherein each of the received transport streams includes a plurality of channels or a plurality of time slots, respectively, by using different scrambling The frequency code descrambles the plurality of channels or the plurality of time slots. An apparatus for receiving a transport stream in a digital broadcast system, the apparatus comprising: a multiplexer for receiving a tuned transport stream and demultiplexing from a transport stream generated according to each of the plurality of contents The transport stream that has been received, thereby extracting the interleaved push data packet; a deinterleaver for encapsulating the interleaved push data packets that have been extracted by deinterleaving according to a predetermined interlace pattern to obtain an encoded push data packet; and a decoder for using the The pre-error correction technique performs error correction of the n obtained encoded push data packets, thereby outputting k push data packets. An apparatus for receiving a transport stream in a digital broadcast system according to claim 13, wherein the media format is defined by H.264, and the transport stream and the interleaved push that has been captured are compressed. Broadcast data packets. An apparatus for receiving a transport stream in a digital broadcast system as described in claim 13 or 14, wherein the apparatus further includes a descrambler for borrowing the interleaved push data packet before borrowing The transport stream that has been received is descrambled by a predetermined scrambling code. An apparatus for receiving a transport stream in a digital broadcast system according to claim 11, wherein each of the received transport streams includes a plurality of channels or a plurality of time slots, respectively, by using different scrambling And a frequency code, wherein the descrambler descrambles the plurality of channels or the plurality of time slots.