KR100799998B1 - Digital broadcasting receiver and method for processing data error in the same - Google Patents

Abstract

A digital broadcast receiver and a data error processing method thereof, comprising: searching for a starting point of a received data frame, decoding a header of a section constituting the data frame, detecting an identifier from the decoded header, Determining whether the data of the current section is the first data or the second data; and if the data of the current section is the first data, detecting a boundary value from the decoded header to determine the data of the current section. Determines whether is the last data of the first data, and if the determination result indicates that the data of the current section is the last data of the first data, determining whether the data of the next section is the second data, and the data of the next section If it is the second data, it is confirmed that the last data of the first data is normal, and the last data address of the first data is stored. And it may be made, including the step of outputting.

Section headers, table boundaries, frame boundaries, flags, identifiers

Description

Digital broadcasting receiver and method for processing data error in the same}

1 illustrates a DVB-H protocol structure based on an OSI 7 layer (Open System Interconnention 7 layer)

2 is a diagram for explaining a delta-tee method.

3 illustrates a digital broadcast receiver for data error processing according to the present invention.

4 shows DVB-H data mapping

5 is a diagram illustrating a header structure of a transport packet.

6 shows a header portion of an MPE section;

7 shows the structure of an MPE-FEC section header.

FIG. 8 is a diagram illustrating a time slice and an identifier descriptor structure

FIG. 9 shows Maximum Burst Duration

FIG. 10 is a diagram illustrating positions and values of a table boundary and a frame_boundary in an MPE-FEC frame when there is no error.

11A and 11B are flowcharts illustrating a data error processing method of a digital broadcast receiver according to the present invention.

Explanation of symbols for main parts of the drawings

1: Receiver 2: Demodulator

3: decoder 4: control unit

5: memory

The present invention relates to a digital broadcast receiver and a data error processing method thereof.

In general, DVB-H (Digital Video Broadcasting-Handheld), which has emerged as a competitive model of terrestrial digital multimedia broadcasting (DMB), has emerged as a convergence model of broadcast communication, moving away from traditional broadcasting.

The European Standardization Organization, Digital Video Broadcasting (DVB), presented the DVB-H standard to the European Telecommunications Standards Institute (ETSI), which states that DVB-H is expanding the broadcast area into the mobile handset market. Explained.

In the meantime, DVB-H is a system that transmits information in IP protocol (Internet Protocol datagram).

IP datagram refers to a signal processing method of sending a signal in a packet by Internet Protocol (IP).

If the conventional broadcast is to spread the signal by streaming the AV signal continuously, DVB-H, like wired and wireless Internet, breaks and compresses the AV signal in packet units, and then transmits the IP data casting (IPDC). The way it is.

DVB-H also takes a time slicing multiplexing scheme.

The time slicing technique is a multiplexing scheme in which a capacity of a transmission path is divided into predetermined time slots and then a packetized broadcast signal is carried in each time slot.

For example, a 10-second signal is compressed and transmitted in a 3-second time span, and the receiver's buffer retains the compressed signal and then unwinds it in sequence and plays it as a video.

DVB explains that it is adopted to reduce power consumption and seamless handover of handsets.

In order to understand the DVB-H standard, it is necessary to understand the structure of MPE (Multi Protocol Encapsulation) in the data link layer containing IP datagrams.

1 illustrates a DVB-H protocol structure based on an OSI 7 layer (Open System Interconnention 7 layer).

As shown in FIG. 1, the DVB-H is transmitted in a transport stream format similar to an existing AV stream in a physical layer, and this is a data link layer. Part of the MPE containing IP datagrams (also referred to as MPE-FEC frames with RS coding for more robust reception) and PSI / Separate into Program Specific Information / Service Information (SI).

In addition, time division is performed by collectively transmitting the MPE part in a frame format as shown in FIG. 2, which is completed through a delta-t method.

The delta-tee method finds exactly when it should be received, notifying the relative difference from the currently received MPE section to the start time of the next burst.

FIG. 2 is a diagram for explaining the delta-tee method, stably by notifying all the MPE sections of one burst (MPE-FEC frame) and the time from the MPE-FEC section to the next burst. Determine the next burst reception time, store it in a buffer, and then receive the IP datagram to solve the service in turn at a rate much lower than the reception rate. Will play.

However, this type of digital broadcast receiver has a table_boundary and a frame_boundary of a section header in a MPE-FEC (Multi Protocol Encapsulation-Forward Error Correction) frame of received data. ) Is used to determine the end position of the MPE-FEC frame, but when a channel error occurs, malfunction occurs due to incorrect information.

Since such a malfunction lowers the reliability of the digital broadcast receiver, there is a need for a method for efficiently coping with this problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem. In the data frame, when an error occurs in the last data indication information such as a table boundary and a frame boundary, the digital broadcast receiver improves reliability by efficiently handling errors. And a data error handling method thereof.

A data error processing method of a digital broadcast receiver according to the present invention includes searching for a starting point of a received data frame, decoding a header of a section constituting the data frame, and detecting an identifier from the decoded header. Determining whether the data of the current section is the first data or the second data; and when the determination result indicates that the data of the current section is the first data, a boundary value is detected from the decoded header, Determining whether the data is the last data of the first data; if the determination result indicates that the data of the current section is the last data of the first data, determining whether the data of the next section is the second data; and the data of the next section. Is the second data, confirm that the last data of the first data is normal, and store the last data address of the first data. It may be made, including the step of outputting.

Here, the detected boundary value may be a table boundary value of 1 and a frame boundary value of zero.

Further, the data frame is an MPE-FEC frame, the identifier is a table identifier, 0X3E or 0X78, the first data is main data, data of an MPE section, and the second data is data for error correction. , MPE-FEC section data.

And if the data of the current section is not the first data, determining whether the data of the current section is the first data of the second data, and if the data of the current section is the first data of the second data, The method may further include checking whether the last data is an error and outputting the last data address of the first data of the previously stored previous section if the last data of the first data is an error.

Also, in the determining whether the data of the current section is the first data of the second data, if the determination result is not the first data of the second data, a boundary value is detected from the decoded header. Determining whether the data of the current section is the last data of the second data; and if the determination result indicates that the data of the current section is the last data of the second data, determining whether the section number and the last section number are the same from the decoded header. And if the section number and the last section number are the same, determining that the last data of the second data is normal, and outputting and ending the last data address of the second data.

Here, the detected boundary value may be a table boundary value of 1 and a frame boundary value of 1.

And, before the step of searching for the starting point of the received data frame, receiving data transmission time information from the outside, determining whether the transmission time of the data has elapsed from the data transmission time information, and the data transmission time If so, the method may further include determining whether the last data of the second data is an error, and outputting and ending the last data address of the second data if the last data of the second data is an error.

In this case, the data transmission time information may be a max burst duration (max_burst_duration) value.

On the other hand, the digital broadcast receiver according to the present invention has a boundary from a receiver for receiving a digital broadcast signal, a demodulator for demodulating the received digital broadcast signal, and a header of a section constituting a data frame of the demodulated digital broadcast signal. determining whether the data of the current section is the last data of the first data by detecting a boundary value, and determining whether the data of the next section is the second data, and storing the last data address of the first data. And outputting and detecting a boundary value from a header of a section constituting a data frame of the demodulated digital broadcast signal to determine whether the data of the current section is the last data of the second data, and the section from the header of the section. Determining whether the number is the same as the last section number by performing the last data week of the second data. Performing error correction decoding of the digital broadcast signal with reference to a control unit for outputting the data, a memory for storing the last data address of the first data output from the control unit, and the last data addresses of the first and second data output from the control unit. It may be configured to include a decoder.

The controller may determine whether the data of the current section is the first data of the second data, check whether the last data of the first data is an error, and then output the last data address of the first data of the previously stored section. have.

The controller may analyze the data transmission time information received from the outside to determine whether the data transmission time has elapsed, determine whether the last data of the second data is an error, and then output the last data address of the second data. have.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

3 is a diagram illustrating a digital broadcast receiver for data error processing according to the present invention. As shown in FIG. 3, the receiver 1, the demodulator 2, the decoder 3, the controller 4, and the memory are illustrated in FIG. 3. (5) and the like.

Here, the receiver 1 performs a role of receiving a digital broadcast signal, and the demodulator 2 demodulates the received digital broadcast signal.

The controller 4 accurately checks the position and address of the last data in the main data, which is the first data, and accurately checks the position and address of the last data among the data for error correction, which is the second data. Do this.

In addition, the controller 4 can appropriately cope with malfunctions even if an error occurs in the last data.

That is, the controller 4 detects a boundary value from the header of the section constituting the data frame of the demodulated digital broadcast signal, determines whether the data of the current section is the last data of the first data, and then It is determined whether the data of the section is the second data, and then the last data address of the first data is stored and output.

In addition, the control unit 4 detects a boundary value from the header of the section constituting the data frame of the demodulated digital broadcast signal, determines whether the data of the current section is the last data of the second data, and determines the header of the section. It is determined whether the section number and the last section number are the same, and output the last data address of the second data.

However, when there is an error in the last data of the first data, the controller 4 determines whether the data of the current section is the first data of the second data, checks whether the last data of the first data is an error, and then Outputs the last data address of the first data of the previous section stored.

If there is an error in the last data of the second data, the controller 4 analyzes the data transmission time information received from the outside to determine whether the data transmission time has elapsed, and whether the last data of the second data is an error. Next, the final data address of the second data is output.

Next, the memory 5 stores the last data address of the first data output from the controller 4, and the decoder 3 refers to the last data addresses of the first and second data output from the controller 4. Error correction decoding of the digital broadcast signal is performed.

As described above, the data error processing method of the digital broadcasting receiver according to the present invention will be described.

First, the control unit searches for a starting point of the received data frame, and the decoder decodes a header of a section constituting the data frame.

Next, the controller detects the identifier from the decoded header to determine whether the data of the current section is the first data or the second data.

In this case, if the data of the current section is the first data, a boundary value is detected from the decoded header to determine whether the data of the current section is the last data of the first data, and the data of the current section is the first data. If the data is the first data or the second data, the decoding of the header of the section constituting the data frame is repeated.

Here, the first data may be main data, and the second data may be data for error correction.

Next, if it is determined that the data of the current section is the last data of the first data, it is determined whether the data of the next section is the second data. If the result of the determination is not the last data of the first data, the last data of the first data is determined. Is an error, and the decoding of the header of the section constituting the data frame is repeated.

Subsequently, if the data of the next section is the second data, it is confirmed that the last data of the first data is normal, and the last data address of the first data is stored and output.

Meanwhile, in the determining whether the data of the current section is the first data or the second data, the determination result determines whether the data of the current section is the first data if the data of the current section is the first data or the second data. It may further comprise the step.

Here, if the data of the current section is not the first data, it is determined whether the data of the current section is the first data of the second data, and if the data of the current section is the first data of the second data, the last data of the first data Is an error.

Then, if the last data of the first data is an error, the last data address of the first data of the previously stored previous section is output.

However, in the determining whether the data of the current section is the first data of the second data, if it is determined that the data of the current section is not the first data of the second data, the boundary value is determined from the decoded header. By detecting, it is determined whether the data of the current section is the last data of the second data.

As a result of the determination, if the data of the current section is the last data of the second data, it is determined whether the section number and the last section number are the same from the decoded header. If the determination result, the data of the current section is not the last data of the second data, After confirming that the last data of the second data is an error, the step of decoding the header of the section constituting the data frame is repeated.

Subsequently, if the section number and the last section number are the same, it is confirmed that the last data of the second data is normal, and the last data address of the second data is output and ends.

However, in the step of determining whether the section number and the last section number are the same from the decoded header, if it is determined that the section number and the last section number are different, it is confirmed that the last data of the second data is an error and constitutes a data frame. The decoding of the header of the section is repeated.

Meanwhile, the control unit receives data transmission time information from the outside before determining the starting point of the received data frame, and determines whether the data transmission time has elapsed from the data transmission time information.

As a result of the determination, if the transmission time of the data has elapsed, it is determined whether the last data of the second data is an error, and if the last data of the second data is an error, the last data address of the second data is output and ends.

The data error processing method of the digital broadcasting receiver of the present invention will be described in more detail by applying to a DVB-H receiver.

FIG. 4 is a diagram illustrating DVB-H data mapping. As shown in FIG. 4, (7) shows a transport packet stream of a minimum unit for constructing an IP datagram. One transport packet is composed of a header part of 4 bytes and a payload part of 184 bytes, and a total of 188 bytes.

And, (8) is a diagram showing a stream (stream) of the MPE section (pay), payload (payload) portion of the transport packet (transport packet) are assembled to form an MPE section.

The header part of the MPE section is composed of 12 bytes, and the payload part is composed of 16 bytes up to 4095 bytes.

In addition, (9) is an IP stream that is output as the final output, and is composed of 40 bytes up to 4080 bytes.

FIG. 5 shows a header structure of a transport packet, and FIG. 6 shows a header portion of an MPE section. As shown in FIG. 6, (10), (11), (12), and (13) are one. Used as a real time parameter (real_time_parameter).

Here, 4 bits of MAC_address_3 of (11) are used as a table boundary, and this table boundary is set to '1' only when the last data portion of the MPE section is input.

In addition, 3 bits of (11) are used as a frame boundary (frame_boundary), and this bit is set only when MPE is used.

FIG. 7 is a diagram illustrating the structure of an MPE-FEC section header. As shown in FIG. 7, reference numeral 14 denotes an input order of MPE-FEC sections, and a value from 0 to 64 may be provided.

And, (15) indicates the number of the last section of the MPE-FEC section, which may also have a value from 0 to 64.

For example, if the section number (section_number) and the last section number (last_setction_number) of (14) match, it is guaranteed that the section is the last section of the MPE-FEC section.

And, (16) represents a time slicing value.

In other words, this value tells the start time when the next burst is entered.

FIG. 8 is a diagram illustrating a time slice and an identifier descriptor structure. As shown in FIG. 8, reference numeral 17 denotes whether a current service uses time slicing. (18) indicates whether or not the burst constituting one MPE-FEC frame uses the MPE-FEC section, and (19) indicates for each burst. It will tell you the row size.

There are four modes of row size: 256, 512, 768, and 1023.

Reference numeral 20 denotes information indicating a maximum duration of a burst.

FIG. 9 is a view showing a maximum burst duration, and as shown in FIG. 12, the maximum burst duration is T1 to T2.

FIG. 10 is a diagram illustrating positions and values of a table boundary and a frame_boundary in an MPE-FEC frame when there is no error.

As shown in (21) of FIG. 10, when table_boundary = 1 and frame_boundary = 0, this indicates that it is the last MPE section of the MPE-FEC frame application data table. When table_boundary = 1 and frame_boudary = 1, it is indicated that this is the last MPE-FEC section of the MPE-FEC frame RS data table.

Otherwise, both the table boundary and the frame boundary are set to '0'.

In the DVB-H receiver having such a structure, the data error processing method of the present invention will be described as follows.

11A and 11B are flowcharts illustrating a data error processing method of a digital broadcast receiver according to the present invention.

First, when power is applied, the controller searches for a start point of a received MPE-FEC frame. (S22, S23)

Next, when the decoder decodes the header of the section constituting the MPE-FEC frame, the controller detects the table identifier table_id of the current section from the decoded header (S24, S25).

Subsequently, the controller determines whether the detected table identifier has a value of 0x3E or 0x78 (S26).

That is, the section is filtered by determining whether the data of the current section is MPE section data or MPE-FEC section data through the identifier of the detected table.

Here, only 0x3E or 0x78 is selected among the table identifier values, and the other values are processed differently because they are subsections for forming an MPE-FEC frame.

It can be seen that 0x3E is an MPE region of the table identifier, and 0x78 is an MPE-FEC region.

Next, the controller determines whether the detected table identifier value is 0x3E or 0x78, and checks again whether the table identifier value is 0x3E (S27).

However, if it is determined that the value of the table identifier detected by the controller is not 0x3E or 0x78, the step S24 of decoding the section header is repeatedly performed (S26).

Subsequently, when it is confirmed that the table identifier value checked by the controller is 0x3E, a boundary value is detected from the decoded header.

That is, in order to confirm whether the data of the current section is the last data, the controller checks whether the table boundary is '1' and the frame boundary is '0' (S28).

If the table boundary is '1' and the frame boundary is not '0', the controller sets the table flag (T-flag) value to 0 to indicate an error because the data of the current section is not the last data. (S29) The step (S24) of decoding the header of the section is repeated.

However, if the control unit determines that the data of the current section is the last data through the table boundary being '1' and the frame boundary being '0', it is determined whether the data of the immediately following section is the MPE-FEC region (table identifier value 0x78). (S30)

If the data of the next section is the data of the MPE-FEC area, it is again confirmed that the data of the current section is the last data, and the table flag (T-flag) value is set to 1 to indicate that it is normal.

The reason for rechecking whether the data of the next section is data of the MPE-FEC area is that an error may occur even if the table boundary is '1' and the frame boundary is '0'.

Therefore, by checking the data in the next section once more, it is possible to prevent errors and ensure reliability.

In addition, the controller stores the last data address of the current section identified as normal in memory in preparation for the next burst (S32), and RS decodes the RS for error correction by referring to the last data address of the current section. Output (S33)

On the other hand, after determining whether the table identifier value is 0x3E (S27), if the table identifier value is not 0x3E, the controller determines whether the data of the current section is the first data of the MPE-FEC region (S34).

The reason for this is to check whether table and frame boundary error checking for the MPE area is normally completed.

Next, when determining that the data of the current section is the first data of the MPE-FEC region, the controller checks whether the table flag (T-flag) value is set to '0' (S35).

If the table flag (T-flag) is set to '0', there is an error in the last data of the MPE area. Therefore, the controller forcibly reads the last data address of the MPE area of the previous burst section previously stored. Output to RS decoder for RS decoding for error correction (S36).

However, if the controller determines that the data of the current section is not the first data of the MPE-FEC region, the table boundary is '1' to determine whether the data of the current section is the last data of the MPE-FEC region. Check whether the frame boundary (frame_boundary) is '1' (S37).

If the table boundary is '1' and the frame boundary is not '1', the controller sets the frame flag (F-flag) value to 0 to indicate an error because the data of the current section is not the last data. (S38) The decoding of the header of the section (S24) is repeated.

However, if the control unit determines that the data of the current section is the last data through the table boundary of '1' and the frame boundary of '1', the section number (section_number) and the last section number (last_section_number) are the same from the decoded header. (S39)

As a result of the determination, if the section number and the last section number are the same, it is again confirmed that the data of the current section is the last data of the MPE-FEC region, and the frame flag (F-flag) value is set to 1 to indicate that it is normal. (S40)

As such, the reason why the section number and the last section number are the same is that an error may occur even if the table boundary is '1' and the frame boundary is '1'.

Therefore, by determining whether the section number is the same as the last section number and reconfirming that the data of the current section is the last data of the MPE-FEC region, it is possible to prevent an error and to ensure reliability.

Then, the control unit outputs the last data address of the MPE-FEC region identified as normal to the RS decoder for RS decoding for error correction (S41), and ends.

However, there may be a case in which the controller does not terminate because it does not normally find the last data of the MPE-FEC region.

In this case, the present invention may determine the maximum burst duration Max_burst_duration.

That is, the control unit receives the max burst duration value from the host before searching for the start point of the received MPE-FEC frame (S42).

Next, the control unit counts the max burst duration value, and determines whether the count value is '0' (S43, S44).

Subsequently, if the count value is '0', it is checked whether the frame flag (F-flag) value is set to '0' (S45).

If the frame flag (F-flag) is set to '0', there is an error in the last data of the MPE-FEC area. Therefore, the control unit reads the last data address of the current MPE-FEC area forcibly and error occurs. Output to RS decoder to RS decode for correction (S41) and forcefully terminate.

In general, in a DVB-H receiver, a table boundary and a frame_boundary are transmitted only once in an entire MPE-FEC frame.

However, if the channel environment is not good, an error occurs in the information value of the table boundary or the frame boundary, which causes a serious problem of failing to recover one burst.

Therefore, if the algorithm used in the present invention is applied to the DVB-H receiver, an appropriate response is made to the error, and even if an error occurs, it can be forcibly terminated, so that all bursts can be restored.

In addition, the present invention can be applied to not only DVB-H receiver but also everywhere using DSM-CC.

As described above, the digital broadcast receiver and the data error processing method thereof according to the present invention can efficiently handle errors when an error occurs in the last data indication information such as a table boundary and a frame boundary. The end point of the FEC frame can be accurately identified, which greatly improves reliability.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (27)

Searching for a starting point of the received data frame; Decoding a header of a section constituting the data frame; Detecting an identifier from the decoded header to determine whether data of a current section is first data or second data; If the data of the current section is the first data, determining a boundary value from the decoded header to determine whether the data of the current section is the last data of the first data; If the data of the current section is the last data of the first data, determining whether the data of the next section is the second data; And if the data of the next section is the second data, confirming that the last data of the first data is normal, and storing and outputting the last data address of the first data. To handle data errors. The method of claim 1, wherein the data frame is an MPE-FEC frame and the identifier is a table identifier, which is 0X3E or 0X78. The digital broadcast as claimed in claim 1, wherein the first data is main data and is data of an MPE section, and the second data is data for error correction and is data of an MPE-FEC section. How to handle data error in receiver. 2. The method of claim 1, wherein the detected boundary value is a table boundary value of 1 and a frame boundary value of 0. The method of claim 1, wherein the determining of whether the data of the current section is first data or second data comprises: And if the data of the current section is the first data or not the second data, repeatedly decoding the header of the section constituting the data frame. The method of claim 1, wherein the determining of whether the data of the current section is the last data of the first data comprises: If it is determined that the last data of the first data is not the last data, the digital data of the first data is confirmed to be an error and the decoding of the header of the section constituting the data frame is repeated. How to handle data error in receiver. 7. The method of claim 6, wherein the last data error check of the first data sets a table flag (T-flag) value to zero. The method of claim 1, wherein in the determining whether the data of the next section is the second data, If it is determined that the data of the next section is not the second data, it is determined that the last data of the first data is an error, and decoding the header of the section constituting the data frame is repeated. A data error processing method of a digital broadcast receiver. 10. The method of claim 8, wherein the last data error check of the first data sets a table flag (T-flag) value of zero. 2. The method of claim 1, wherein the final data normal confirmation of the first data sets a table flag (T-flag) value of one. The method of claim 1, wherein determining whether the data of the current section is first data or second data comprises: And determining whether the data of the current section is the first data if the data of the current section is the first data or the second data as a result of the determination. . The method of claim 11, further comprising: determining whether the data of the current section is first data of the second data if the data of the current section is not first data; If the data of the current section is first data of the second data, checking whether the last data of the first data is an error; And if the last data of the first data is an error, outputting the last data address of the first data of the previously stored previous section. 13. The method of claim 12, wherein the last data error check of the first data confirms whether a table flag value is zero. The method of claim 12, wherein determining whether data of the current section is first data of the second data comprises: As a result of the determination, if the data of the current section is not the first data of the second data, a boundary value is detected from the decoded header to determine whether the data of the current section is the last data of the second data. Determining; If the data of the current section is the last data of the second data, determining whether the section number and the last section number are the same from the decoded header; And determining that the last data of the second data is normal, and outputting and ending the last data address of the second data if the section number and the last section number are the same. A data error processing method of a digital broadcast receiver. 15. The method of claim 14, wherein the detected boundary value is a table boundary value of 1 and a frame boundary value of 1. The method of claim 14, wherein determining whether the data of the current section is the last data of the second data comprises: As a result of the determination, if the data of the current section is not the last data of the second data, confirming that the last data of the second data is an error and repeatedly decoding the header of the section constituting the data frame. A data error processing method of a digital broadcast receiver, characterized in that. 17. The method of claim 16, wherein the last data error check of the second data sets a frame flag (F-flag) value to zero. 15. The method of claim 14, wherein determining whether a section number and a last section number are the same from the decoded header: If it is determined that the section number and the last section number are different from each other, it is determined that the last data of the second data is an error, and the decoding of the header of the section constituting the data frame is repeated. Data error handling method of broadcast receiver. 19. The method of claim 18, wherein the last data error check of the second data sets a frame flag (F-flag) value to zero. 15. The method of claim 14, wherein the final data normal confirmation of the second data sets a frame flag (F-flag) value to 1. The method of claim 1, wherein prior to the step of searching for a starting point of the received data frame, Receiving data transmission time information from the outside; Determining whether the transmission time of the data has elapsed from the data transmission time information; If the transmission time of the data has elapsed, determining whether the last data of the second data is an error; And if the last data of the second data is an error, outputting and terminating the last data address of the second data. 22. The method of claim 21, wherein the data transmission time information is a max burst duration (max_burst_duration) value. The method of claim 21, wherein the determining of whether the transmission time of the data has elapsed from the data transmission time information comprises: Counting the data transmission time information value; Determining whether the count value is a predetermined value; As a result of the determination, if the count value is a predetermined value, it is determined whether the last data of the second data is an error, and if the count value is not a predetermined value, repeatedly determining whether the count value is a predetermined value. A data error processing method of a digital broadcast receiver, characterized in that. 24. The method of claim 23, wherein the predetermined value is zero. A receiver for receiving a digital broadcast signal; A demodulator for demodulating the received digital broadcast signal; Detecting a boundary value from a header of a section constituting a data frame of the demodulated digital broadcast signal to determine whether the data of the current section is the last data of the first data; Determining whether the data is second data to store and output the last data address of the first data; Detecting a boundary value from a header of a section constituting a data frame of the demodulated digital broadcast signal to determine whether the data of the current section is the last data of the second data; and from the header of the section A controller configured to output a last data address of the second data by performing a step of determining whether the number is the same as the last section number; A memory for storing a last data address of the first data output from the controller; And a decoder configured to perform error correction decoding of the digital broadcast signal with reference to the last data addresses of the first and second data output from the controller. The method of claim 25, wherein the controller determines whether the data of the current section is the first data of the second data, checks whether the last data of the first data is an error, and then stores the first data of the previously stored previous section. And output the last data address of the digital broadcast receiver. The method of claim 25, wherein the control unit analyzes the data transmission time information received from the outside to determine whether the transmission time of the data has elapsed, and determines whether the last data of the second data is an error, and then the second data And output the last data address of the digital broadcast receiver.

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