KR100441337B1 - Method for setting channel tuning data automatically in digital broadcasting receiver - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic channel setting method in a digital broadcast receiver. In a digital broadcast receiver such as a set-top box (STB), a digital broadcast channel is sequentially scanned in the automatic channel setting mode, and the corresponding channel and Automatically detects and stores tuning data for each service, and stores only the tuning data of broadcast channels and services that can be descrambled in a digital broadcast receiver, or satisfies a user desired condition. By selectively storing tuning data of broadcast channels and services, it is possible to prevent unnecessary storage of tuning data for broadcast channels and services that provide a broadcast program that cannot process signals in a digital broadcast receiver. In addition, you can effectively broadcast only the type of service you want. A very useful inventions which enables you to watch selected.

Description

Automatic channel setting method in digital broadcasting receiver {Method for setting channel tuning data automatically in digital broadcasting receiver}

The present invention relates to an automatic channel setting method in a digital broadcast receiver. More particularly, in a digital broadcast receiver such as a set top box (STB), the digital broadcast channel is sequentially scanned in an automatic channel setting mode. The present invention relates to an automatic channel setting method in a digital broadcast receiver which automatically detects tuning data for a corresponding channel and respective services while scanning and selectively stores the tuning data in a memory.

In general, digital broadcasting includes not only digital satellite broadcasting but also digital cable broadcasting and digital terrestrial broadcasting. In a digital broadcasting receiver such as a set-top box (STB) for receiving the digital broadcasting, the digital broadcasting of the MPEG transport stream is performed. After receiving a broadcast signal, decoding and signal processing the original video and audio signals, and transmitting the video and audio signals to a general television or the like, the user can watch a desired broadcast program.

As described above, the digital broadcast channel for transmitting the digital broadcast signal of the MPEG transport stream may include an encrypted broadcast channel for transmitting a scrambled broadcast signal for the purpose of paying.

Accordingly, a separate module for receiving and descrambled the scrambled broadcast signal, for example, a Conditional Access System (CAS) module is additionally provided to the digital broadcast receiver, or connected and used. The number of cases is increasing rapidly.

In recent years, a digital broadcast receiver has been required to detect the encrypted broadcast channel and delete the tuning data of the broadcast channel in an automatic channel setting mode. However, there is no effective solution yet. It is not true.

Meanwhile, a method of deleting a scrambled broadcast channel in an automatic channel setting mode in a broadcast signal receiver such as a general television or VCR, for example, Korean Patent Laid-Open Publication No. 2000-0033624 (published 6, 2000) A method of deleting a scrambled channel during auto search in a broadcast signal receiver described in (May 15) is as follows.

First, FIG. 1 illustrates a configuration of a broadcast signal receiver, for example, VCR, to which a conventional scrambled channel deletion method is applied. In the VRC, regular broadcasts from the antenna 10 are performed. A TMI module unit 11 comprising a tuner, a modulator, and an IF processing unit for receiving a signal and performing channel tuning, and a video signal processing unit 13 for receiving and processing an intermediate frequency processed video signal from the TMI module unit; An A / D converter 14 for A / D converting video signals of sequentially tuned channels, and a video signal converted from A / D by receiving the A / D converted video signal from the A / D converter. The microcomputer 12 determines whether or not the broadcasting channel is scrambled by a predetermined level or more, a deck unit 18 which executes recording and playback mode under the control of the microcomputer, and controls the microcomputer. And an OSD processing unit 17 for outputting an OSD screen, and a memory unit 16 for storing predetermined information under the control of the microcomputer, and in the case of a television integrated TV (TVCR), the video signal processing unit ( A CRT unit 15 for displaying the video signal processed in step 13 on the screen is further included.

On the other hand, in the V-CA configured as described above, as shown in FIG. 2, when the first signal is input to the TMI module unit 11 after the broadcast signal is received by the antenna, the microcomputer 12 starts. After checking this, all channel bands (channels 02 to 69) are sequentially searched (S100 and S101).

At this time, the microcomputer 12 periodically checks whether the channel search is completed. If the channel search is ongoing, the microcomputer 12 determines whether the number of video synchronization signals of each searched channel band is 60 ± 5 and the number of synchronization signals is 60. If it satisfies ± 5, the control signal is sent to the OSD processing unit 17 to further refine the display to display the OSD screen on the CRT unit 15 asking whether or not to execute the window search for searching the video synchronization signal (S102, S103). ).

However, if it is determined that the number of the video synchronization signals of the searched channel bands is less than 60 ± 5, the video synchronization signal search is performed again (S105). At this time, when the user selects the window search by operating the remote controller, the window search for detecting the video synchronization signal by subdividing each channel selected by the control of the microcomputer 12 is performed. When the video synchronization signal is detected and it is determined that the window is detected, the local oscillation frequency tuned accordingly is recorded and stored in the memory unit 16 (S106, S107).

On the other hand, if the microcomputer 12 performs the first auto search process as described above and determines that the channel search is completed, the microcomputer 12 sends a control signal to the OSD processing unit 17 to display the OSD screen asking whether to select the second auto search. The display unit 15 displays (S108).

At this time, when the user selects the secondary auto search by operating the remote controller, the microcomputer 12 sequentially reads the channel data searched by the primary auto search from the memory (S109). In the tuner (11), the corresponding channel to be read sequentially is tuned, and then the broadcast signal of the channel is transmitted to the video signal processing unit 13 through the modulator and the IF processing unit.

The video signal of each channel signal processed through the video signal processor 13 is converted into an analog signal to a digital signal through an A / D converter 14 and then applied to the microcomputer 12. In 12), it is determined whether the video signal level of each A / D converted channel is 0.8 V or more (S110 and S111).

As a result of the determination, when it is determined that the video signal level of each A / D converted channel is 0.8 V or more, the microcomputer 12 determines that the corresponding broadcast channel is the scrambled broadcast channel and skips it (S112). If it is determined that the video signal level of each channel of the D conversion is less than 0.8 V, it is determined as a normal broadcasting channel, and the local oscillation frequency tuned in the first auto search is stored in the memory unit 16 as it is.

Therefore, when the scrambled broadcast channel is auto searched and received and recorded, the user's convenience is provided so that the user does not have to manually delete the corresponding channel manually by operating the remote controller.

However, the method of deleting a scrambled channel during auto search of the broadcast signal receiver is applied to a V-Cal or a general television to receive a general television broadcast instead of a digital broadcast, and a digital broadcast receiver such as a set-top box receiving a digital broadcast It is difficult to apply directly to the digital broadcast receiver, and even if it is extended to the digital broadcast receiver, all the scrambled broadcast channels are deleted. Therefore, the digital broadcast receiver can be descrambled using a control access system (CAS) module. In spite of being a broadcast channel, there is a problem that a batch processing is unconditionally deleted.

In addition, a complicated configuration and operation such as detecting the level of the video signal and comparing it with a predetermined voltage level is necessary, which simplifies the device, and furthermore, an error may occur in the process of detecting and comparing the level of the video signal. Since this is high, various problems arise in that it is impossible to accurately determine the scrambled broadcast channel.

Accordingly, the present invention has been made in view of the above problems and circumstances, and in a digital broadcast receiver such as a set-top box (STB), in the automatic channel setting mode, the digital broadcast channel is sequentially scanned while the corresponding channel is scanned. And an automatic channel setting method of a digital broadcast receiver for automatically detecting and storing tuning data for each service in a memory, and storing only tuning data of a descrambleable broadcast channel and a service in a digital broadcast receiver. The purpose is to provide.

In addition, the present invention, in the digital broadcast receiver, such as a set-top box (STB), in the automatic channel setting mode, while automatically scanning the digital broadcast channel (Scan), while automatically detecting the tuning data for the channel and each service The purpose of the present invention is to provide an automatic channel setting method in a digital broadcast receiver for storing data in a memory and selectively storing tuning data of a broadcast channel and a service satisfying a user's desired condition.

FIG. 1 illustrates a configuration of a VCR to which a conventional channel deleting method is applied.

2 is a flowchart illustrating an operation of deleting a channel during a conventional auto search.

3 illustrates a configuration of a digital broadcast receiver to which an automatic channel setting method according to the present invention is applied.

4 is a flowchart illustrating an automatic channel setting method in the digital broadcast receiver according to the first embodiment of the present invention.

FIG. 5 illustrates the conditional system ID (CA_system_id) information applied to the first embodiment of the present invention in a table form.

FIG. 6 is a table illustrating tuning data selectively stored according to a first embodiment of the present invention.

7 is a flowchart illustrating an automatic channel setting method in a digital broadcast receiver according to a second embodiment of the present invention.

FIG. 8 is a table illustrating tuning data and conditional system ID information stored in association with each other according to a second embodiment of the present invention.

9 is a flowchart illustrating an automatic channel setting method in a digital broadcast receiver according to a third embodiment of the present invention.

FIG. 10 is a table illustrating service type information (Service_type) applied to the third embodiment of the present invention.

11 is a flowchart illustrating an automatic channel setting method in a digital broadcast receiver according to a fourth embodiment of the present invention.

FIG. 12 is a table illustrating tuning data and service type information stored in association with each other according to the fourth embodiment of the present invention.

※ Explanation of code for main part of drawing

20: Tuner part 21: Demux

22: audio buffer 23: video buffer

24: data buffer 25: MPEG decoder

26: microcomputer 27: memory

28: interface unit 100: conditional access module

The automatic channel setting method in the digital broadcast receiver according to the present invention for achieving the above object, in the automatic channel setting mode, the scramble type for each service for each channel while sequentially scanning each digital broadcast channel Detecting and confirming step 1; Comparing the identified scramble type with a descrambleable type in the digital broadcast receiver; And three steps of selectively storing tuning data of a corresponding channel and a service in a memory according to the comparison result.

In addition, the automatic channel setting method in the digital broadcasting receiver according to the present invention, in the automatic channel setting mode, sequentially scanning the respective digital broadcasting channels, the tuning data of each service for each channel and the scramble type of the service 1 step of linking and storing additional information that can be checked in a memory; Determining whether the digital broadcast receiver can descramble the broadcast signal of each service by referring to the additional information stored in the memory; And three steps of selectively deleting the tuning data of the corresponding channel and the service stored in the memory according to the checking result.

In addition, the automatic channel setting method in the digital broadcast receiver according to the present invention, in the automatic channel setting mode, while sequentially scanning the respective digital broadcast channels, the broadcast signal of each service for each channel, radio broadcast or television broadcast 1 step of detecting and confirming whether the corresponding; And comparing the check result with a preset user condition and matching, and selectively storing only tuning data of the corresponding channel and service in the memory.

In addition, the automatic channel setting method in the digital broadcasting receiver according to the present invention, in the automatic channel setting mode, while scanning the respective digital broadcasting channels sequentially, the tuning data of each service for each channel and the broadcast signal of the service A step of linking and storing additional information for identifying whether the broadcast is a radio broadcast or a television broadcast in a memory; Comparing and confirming whether a broadcast signal of each service corresponds to a radio broadcast or a television broadcast conforming to a user condition by referring to additional information stored in the memory; And three steps of selectively deleting the tuning data of each service for each channel stored in the memory according to the confirmation result.

Hereinafter, a preferred embodiment of an automatic channel setting method in a digital broadcast receiver according to the present invention will be described in detail with reference to the accompanying drawings.

3 shows a configuration of a digital broadcast receiver to which an automatic channel setting method according to the present invention is applied. A tuner unit 20 for tuning a digital broadcast channel to a digital broadcast receiver such as a set-top box (STB) is shown. And a demux 21 for parsing an MPEG transport stream received through each service multiplexed on the broadcast channel into audio, video, and data, and audio for temporarily storing the audio, video, and data. A buffer 21, a video buffer 23, a data buffer 24, and an MPEG decoder 25 for decoding the temporarily stored audio, video and data and restoring the original audio and video signals are included.

In addition, when the audio and video is scrambled encrypted data, the interface unit 28 connected to the conditional access system (CAS) module 28 for descrambling through the interface with the MPEG decoder, And a memory 27 for storing data necessary for the operation control.

On the other hand, in the microcomputer 26, when the automatic channel tuning mode is set according to system initialization of the digital broadcast receiver or a user's key input, the tuner unit 20 and the demux 21 are controlled to operate. By sequentially scanning the digital broadcast channel, the SI (Service Information) information temporarily stored in the data buffer 24 is detected and confirmed.

In this case, the SI information includes program map table (PMT) information and service description table (SDT) information, and the program map table (PMT) information includes information for each channel. Conditional system ID (CA_system_id) information for identifying a scramble type for each service is included, and the service description table (SDT) information includes a broadcast type for each service, for example, radio broadcast or television broadcast. The service type (Service_type) information that can be checked is included.

Accordingly, the microcomputer 26 automatically scans the digital broadcasting channel in the automatic channel setting mode and automatically detects and stores the tuning data for the corresponding channel and each service in the memory. By referring to the system ID (CA_system_id) information, only the tuning data of the broadcast channel and the service that can be descrambled by the digital broadcast receiver are selected and stored in the memory 27, or the service type (Service_type) With reference to the information, a series of operations for selecting only the tuning data of the broadcasting channel and the service corresponding to the broadcasting selected by the user among the radio broadcasting or the television broadcasting and storing them in the memory 27 is performed. It will be described in detail as follows.

FIG. 4 is a flowchart illustrating an automatic channel setting method in the digital broadcast receiver according to the first embodiment of the present invention. In the microcomputer 26, an automatic channel at the time of system initialization of a digital broadcast receiver or from a user is shown. If the setting is requested, the automatic channel tuning mode is set (S10), and the scrambleable scrambling type is detected and detected by the conditional access system (CAS) module 100 connected and connected through the interface unit 28. It is made (S11).

The tuner 20 and the demux 21 are operated to sequentially scan the digital broadcast channel (S12), and the SI information for each service of the corresponding channel is received from the data buffer 24. In this case, the microcomputer 26 searches for the conditional access system ID (CA_system_id) information among the program member table (PMT) information included in the SI information (S13).

That is, as shown in FIG. 5, after searching for the conditional access system ID (CA_system_id) information for identifying the type of broadcast programs of each service, the conditional access system (CAS) module In operation S14, the method 100 may compare with the scrambleable type that may be descrambled.

As a result of the comparison, when the conditional access system module 100 provides a scramble type broadcast program that can be descrambled, it is determined that the digital broadcast receiver is a valid service (S15). Tuning data for a service is stored in the memory 27, for example, a nonvolatile memory such as a flash memory (S16).

Meanwhile, as a result of the comparison, when the conditional access system module 100 provides a scramble type broadcast program that cannot be descrambled, it is determined that the service is invalid in the digital broadcast receiver (S15). The storage of the tuning data for the broadcast channel and the service is skipped (S17).

Thereafter, the microcomputer 26 releases the automatic channel tuning mode (S19) when the scan operation for all broadcast channels is completed (S18).

Accordingly, as illustrated in FIG. 6, the memory 27 stores and stores tuning data for digital broadcasting channels and services, and descrambles the data in the conditional access system (CAS) module 100. Only tuning data of a broadcast channel and a service providing a scrambleable broadcast program or providing an unscrambled broadcast program is selectively stored.

7 is a flowchart illustrating an automatic channel setting method in the digital broadcast receiver according to the second embodiment of the present invention. In the microcomputer 26, as described above, system initialization of the digital broadcast receiver is performed. When the automatic channel setting is requested from the city or the user, the automatic channel tuning mode is set (S30).

Subsequently, the tuner 20 and the demux 21 are operated to sequentially scan the digital broadcast channel (S31), and the SI information for each service of the corresponding channel is received from the data buffer 24. In this case, the microcomputer 26 searches for the conditional access system ID (CA_system_id) information among the program member table (PMT) information included in the SI information (S32).

The retrieved conditional access system ID (CA_system_id) information and the tuning data for the corresponding broadcast channel and service are stored in the memory 27, for example, a nonvolatile memory such as a flash memory (S33).

That is, as shown in FIG. 8, the conditional access system ID (CA_system_id) information for identifying which type of broadcast programs of each service is scrambled and the tuning data for the corresponding broadcast channel and service are linked to each other. Will be stored.

Then, in the microcomputer 26, when the scan operation for all broadcast channels is completed (S34), a user request or automatically, a conditional access system (CAS) module connected and connected through the interface unit 28 ( In operation 100, the descrambleable scrambling type is detected and checked (S35).

The conditional access system ID (CA_system_id) information stored in the memory is compared with the scrambling type that can be descrambled by the conditional access system (CAS) module 100 (S36). As a result of the comparison, the condition In the case of a service providing a scramble type broadcast program that can be descrambled by the null access system module 100, the digital broadcast receiver determines that the service is valid (S37), and tunes data for the corresponding broadcast channel and service to the memory. At 27, storage is carried out (S38).

Meanwhile, as a result of the comparison, when the conditional access system module 100 provides a scramble type broadcast program that cannot be descrambled, the digital broadcast receiver determines that the service is invalid (S37). Tuning data for the broadcast channel and the service are deleted from the memory as shown in Fig. 8 (S39).

Thereafter, the microcomputer 26 releases the automatic channel tuning mode when the storage maintenance or deletion operation for the tuning data of the broadcasting channel and the service stored in the memory is completed (S40).

Accordingly, in the memory 27, a broadcast channel and a service for providing a scramble type broadcast program that can be descrambled in the conditional access system (CAS) module 100 or for providing an unscrambled broadcast program. Only the tuning data is stored.

FIG. 9 is a flowchart illustrating an automatic channel setting method in a digital broadcast receiver according to a third embodiment of the present invention. In the microcomputer 26, an automatic channel at the time of system initialization of a digital broadcast receiver or from a user is shown. If the setting is requested, the automatic channel tuning mode is set (S50), and then the tuning constraints requested from the user are received and stored (S51).

In this case, the tuning restriction condition is a user condition for restricting the automatic channel setting operation only for a broadcast channel and a service corresponding to any one of radio broadcasting, television broadcasting, or radio and television broadcasting. Through the user can specify selection, or input through a separate user key can be specified.

On the other hand, in the microcomputer 26, the tuner unit 20 and the demux 21 are operated and scanned, while sequentially scanning digital broadcast channels (S12), the SI information for each service for each channel, The read from the data buffer 24 is confirmed. At this time, the microcomputer 26 searches for service type (service_type) information among the service partition table (SDT) information included in the SI information (S53). .

That is, as shown in Figure 10, after searching the service type (Service_type) information that can determine whether the broadcast programs of each service corresponds to digital television broadcasting or digital radio broadcasting, compared with the tuning constraints specified by the user In the case of a broadcast program that satisfies the tuning condition specified by the user, for example, a service corresponding to a digital television broadcast (S54), the tuning data for the corresponding broadcast channel and service is stored in the memory 27, for example. The nonvolatile memory is stored in a nonvolatile memory such as a flash memory (S55).

Meanwhile, as a result of the comparison, in the case of a broadcast program that does not satisfy the tuning restriction condition specified by the user, for example, a service of a radio broadcast that does not correspond to a digital television broadcast (S54), the tuning data for the corresponding broadcast channel and service may be The storage is skipped (S56).

Thereafter, the microcomputer 26 releases the automatic channel tuning mode (S58) when the scan operation for all broadcast channels is completed (S57).

Accordingly, the memory 27 stores and stores the digital broadcasting channel and the tuning data for each service, and any one of radio broadcasting, television broadcasting, or radio and television broadcasting that satisfies the tuning constraint specified by the user. Only tuning data of the corresponding broadcast channel and service are selectively stored.

11 is a flowchart illustrating an automatic channel setting method in the digital broadcast receiver according to the fourth embodiment of the present invention. In the microcomputer 26, as described above, system initialization of the digital broadcast receiver is performed. When the automatic channel setting is requested from the city or the user, the automatic channel tuning mode is set (S70).

Subsequently, the tuner 20 and the demux 21 are operated to sequentially scan the digital broadcast channel (S71), and the SI information for each service of the corresponding channel is received from the data buffer 24. At this time, the microcomputer 26 searches for service type (Service_type) information among the service partition table (SDT) information included in the SI information (S72).

In addition, the retrieved service type (Service_type) information and the tuning data for the corresponding broadcast channel and service are stored in association with the memory 27, for example, a nonvolatile memory such as a flash memory (S73).

That is, as shown in FIG. 12, service type information (Service_type) for identifying whether broadcast programs of each service are radio broadcast or television broadcast, and tuning data for the corresponding broadcast channel and service are stored in association with each other. .

Subsequently, when the scan operation for all broadcasting channels is completed (S74), the microcomputer 26 receives and stores the tuning constraints requested from the user (S75). As a user condition for restricting the automatic channel setting operation only for a broadcast channel and a service corresponding to one of a radio broadcast, a television broadcast, or a radio and a television broadcast, the user may select and designate through a normal OSD screen, Alternatively, the input may be specified through a separate user key.

On the other hand, the microcomputer 26 compares the service type (Service_type) information stored in the memory with the tuning constraints specified by the user (S76), and a broadcast program that satisfies the tuning conditions specified by the user, for example. For example, in the case of a service corresponding to digital television broadcasting (S77), the tuning data for the corresponding broadcasting channel and service is maintained and stored in the memory 27 (S38).

On the contrary, as a result of the comparison, in the case of a broadcast program that satisfies the tuning condition specified by the user, for example, a service of a radio broadcast that does not correspond to a digital television broadcast (S77), tuning data for the corresponding broadcast channel and service is shown. As shown in FIG. 12, the memory device is deleted from the memory (S79).

Thereafter, the microcomputer 26 releases the automatic channel tuning mode when the storage maintenance or deletion operation for the tuning data of the broadcasting channel and the service stored in the memory is completed (S80).

Accordingly, the memory 27 stores and stores tuning data for digital broadcasting channels and respective services, and any one of radio broadcasting, television broadcasting, or radio and television broadcasting that satisfies the tuning constraint specified by the user. Only the tuning data of the corresponding broadcast channel and service are stored and maintained.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The automatic channel setting method in the digital broadcast receiver according to the present invention constructed and configured as described above, in a digital broadcast receiver such as a set-top box (STB), while scanning the digital broadcast channel sequentially in the automatic channel setting mode, And automatically detects and stores tuning data for the corresponding channel and each service in a memory, and selectively stores and stores only tuning data of a broadcast channel and a service that can be descrambled in a digital broadcast receiver, or satisfy a condition desired by a user. By selectively storing tuning data of channels and services, it is possible to prevent unnecessary storage of tuning data for broadcast channels and services that provide a broadcast program that cannot process signals in a digital broadcast receiver. Room of type of service you want It is a very useful invention that can efficiently select and view only songs.

Claims (14)

In the automatic channel setting mode, step of detecting and confirming the scramble type by referring to additional information of each service for each channel while sequentially scanning each digital broadcasting channel; Comparing and determining whether the identified scramble type is a type that can be descrambled in the digital broadcast receiver; And And a step of selectively storing tuning data of a corresponding channel and a service in a memory according to the determination result. The method of claim 1, In the first step, the digital broadcasting according to the present invention refers to the conditional access system ID (CA_system_id) information included in the program map table (PMT) information transmitted through each service, and detects and confirms the scramble type for the service. Automatic channel setting method in receiver. The method of claim 1, The second step is to compare the types that can be descrambled in the conditional access system module of the digital broadcast receiver and whether the scramble type of each service is matched with each other. How to set up channel. The method of claim 3, wherein In the third step, if the result of the comparison does not match, skipping the tuning data of the corresponding channel and service without storing them in the nonvolatile memory. In the automatic channel setting mode, step 1 of sequentially scanning each digital broadcast channel, and cooperatively stores the tuning data of each service for each channel and additional information for identifying the scramble type of the service in a memory; Determining whether the digital broadcast receiver can descramble the broadcast signal of each service by referring to the additional information stored in the memory; And And selectively deleting tuning data of a corresponding channel and a service stored in the memory according to the checking result. The method of claim 5, The additional information is a conditional access system ID (CA_system_id) information included in the program map table (PMT) information transmitted through each service, automatic channel setting method for a digital broadcast receiver. The method of claim 6, In step 2, the scramble type of each service identified by referring to the conditional access system ID (CA_system_id) information stored in the memory, and the type that can be descrambled by the conditional access system module of the digital broadcast receiver. An automatic channel setting method in a digital broadcast receiver, characterized by comparing and checking whether or not they match each other. The method of claim 7, wherein Wherein the step 3, as a result of the comparison, automatic channel setting method for the digital broadcast receiver, characterized in that the tuning data of the corresponding channel and service is stored and stored in the memory. In the automatic channel setting mode, sequentially scanning each digital broadcast channel and detecting whether a broadcast signal of each service for each channel corresponds to a radio broadcast or a television broadcast; And And comparing the result of the check with a preset user condition and selectively storing only tuning data of a corresponding channel and service in the memory. How to set up channel. The method of claim 9, The first step is to detect whether the broadcast signal of each service is a radio broadcast or a television broadcast by referring to the service type information included in the service description table (SDT) information transmitted through each service for each channel. Automatic channel setting method for a digital broadcast receiver, characterized in that the check. The method of claim 9, The user condition may be limited to selectively storing only tuning data of a corresponding channel and service only for a service satisfying any one of radio broadcasting, television broadcasting, or radio and television broadcasting. How to set up channel. In the automatic channel setting mode, each digital broadcast channel is sequentially scanned, and the tuning data of each service for each channel and additional information for confirming whether the broadcast signal of the service is a radio broadcast or a television broadcast are linked and stored in the memory. Step 1 to do; Comparing and confirming whether a broadcast signal of each service corresponds to a radio broadcast or a television broadcast conforming to a user condition by referring to additional information stored in the memory; And And selectively deleting the tuning data of each service for each corresponding channel stored in the memory according to the checking result. The method of claim 12, The additional information is a service channel (Service_type) information included in the service description table (SDT) information transmitted through each service, automatic channel setting method characterized in that the. The method of claim 12, The user condition may be limited to selectively storing only tuning data of a corresponding channel and service only for a service that satisfies one of radio broadcasting, television broadcasting, or radio and television broadcasting. Automatic channel setting method.