KR20090074908A - Digital broadcasting receiver and method for channel conversion of digital broadcasting receiver - Google Patents

Abstract

A channel conversion method in a digital broadcasting receiver and digital broadcasting transceiver are provided to improve the convenience of a digital broadcasting viewer by freely moving a major channel and a sub channel by using a remote controller and a direction key. A controller operates a digital broadcasting receiver(S36). The controller moves each channel of the channel table stored in the channel map storage to the main part channel unit(S34). The controller moves to the subchannel unit belonging to the main channel which is currently selected each channe(S35).

Description

Channel Switching Method in Digital Broadcast Receiver and Digital Broadcast Receiver {Digital Broadcasting Receiver and Method for Channel Conversion of Digital Broadcasting Receiver}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel switching method in a digital broadcast receiver and a digital broadcast receiver, and in particular, various digital broadcast receivers capable of receiving and processing digital broadcast signals, such as a digital TV or a digital broadcast set-top box. It can be used to make it easy for the user to perform both Major Channel and Minor Channel movements.

As digital broadcasting began, not only terrestrial broadcasters but also dozens of cable broadcasters serviced different contents, and as digital satellite broadcasting services started, various information channels suitable for various layers of viewers were provided. Accordingly, the number and types of contents provided through broadcasting continue to increase, and it is more difficult for a user to find a desired channel among a plurality of channels.

For this reason, digital broadcast receivers employ various methods to allow users to easily find a desired channel.

Meanwhile, the digital broadcasting standard defines a channel using a physical channel and a virtual channel.

Although physical channels that transmit broadcast signals are different from analog broadcast, digital broadcast, and transmission stations in each region, users who use digital broadcasting service can watch broadcasts through virtual channels separate from physical channels transmitted from transmission stations. Can be.

The virtual channel is a channel virtually made so that broadcast signals received from one broadcasting station are received with the same channel number even in different regions.

The virtual channel information is contained in program and system information protocol (PSIP) information existing in a table packet of a transport stream (TP) constituting a digital broadcast signal. Can be obtained after going through the process.

PSIP is a standard for channel and system information. It is composed of several tables to transmit information about channels of each broadcasting station and information about each program of channels, and supports additional functions related to broadcast guide services. The PSIP includes a virtual channel table (VCT) having various program information such as channel information for channel selection and packet identification number for A / V reception.

The virtual channel table has a plurality of virtual channel information, and the virtual channel information includes a channel number, a shortened channel name, a carrier frequency, a service type, and the like.

At this time, the channel number is composed of the major channel (Major Channel) and the minor channel (Minor Channel) number, the main channel number represents a broadcast station and uses a range of 2 ~ 99, the sub channel number is the same main channel number (ie , A broadcast program existing in the same broadcast station) and uses a range of 0 to 999. That is, although the sub-channel is a broadcast signal received through the same frequency band as the main channel, it can be viewed as a broadcast signal that is divided into a plurality of packets by a broadcasting station and transmitted in one frequency band.

In addition, the virtual channel includes a corresponding physical channel, and in the case of high-definition television (HDTV), one virtual channel is transmitted to one physical channel, and in the case of SDTV, four virtual channels are transmitted to one physical channel. Can be.

As described above, the virtual channel includes a major channel and a minor channel, and one main channel may include a plurality of subchannels. For example, a plurality of subchannels such as 11-1, 11-2, 11-3, and 11-4 may exist in channel 11, which is a main channel. That is, in the case of digital broadcasting, since a plurality of broadcast programs can be multiplexed and transmitted simultaneously, it is necessary to select a main channel and a sub-channel indicating a broadcast program multiplexed in the main channel.

In this digital broadcasting environment, the process of searching for various channels and searching for a desired channel will be described.

In general, a user finds and stores a channel that is currently being broadcast by using a channel scan function of the digital broadcasting receiver. Assume the channel found by the user is 10 channels 6-1, 6-2, 7-1, 9-1, 9-2, 9-3, 10-1, 10-2, 11-1, 11-3 In Korea, if you want to watch channel 10-2 while watching channel 6-1, operate Channel Up key 7 times 6-2, 7-1, 9-1, 9- Channels 2, 9-3, 10-1 and 10-2 should be searched in order.

At this time, it is possible to move directly to channel 10-2 using the numeric keys of the remote controller, but it is inconvenient to directly input the numeric keys and the sign key ('-'), and the channel up key (or the channel down key) continuously. Because of the simplicity of pressing, most users prefer to navigate to the channel using the channel up or channel down keys, which are mostly used for channel switching. Therefore, there is a need to make it easier to move to a desired channel in such a digital broadcasting environment where the main channel and the sub channel are mixed.

In addition, the channel up key and the channel down key may not be used to distinguish between the main channel and the sub channel.

For example, according to the Brazilian Digital TV (DTV) standard, the smallest number of minor channels (6-1, 7-1, 9-1, 10-1, 11- Only 1). According to this standard, if channel up key or channel down key has multiple sub-channels in one main channel (eg 10-1, 10-2, ...), channel 10-2 is channel up key or channel down. You cannot move through the keys.

In other words, the Brazilian model can only move between the main channels when moving through the channel up and channel down keys. For example, assuming that there are channels 5-1, 5-2, and 6-2, pressing the channel up key in channel 5-1 moves to channel 6-2 instead of channel 5-2.

Therefore, in consideration of the direction key preference of the digital broadcasting user, it will be necessary to allow the sub-channel to be freely moved using the direction key of the remote controller while satisfying the above limitations.

Accordingly, the present invention has been made to meet the above needs, a digital broadcast receiver that can facilitate the convenience of digital broadcast viewers by allowing the primary and secondary channels to move freely using the direction keys of the remote controller and It is an object of the present invention to provide a channel switching method in a digital broadcast receiver.

In order to achieve the above object, an embodiment of the digital broadcast receiver according to the present invention, by moving the channel in accordance with the control signal received from the remote controller and processing the digital broadcast signal of the currently tuned channel and the display screen; In particular, if the received control signal is an up arrow key signal or a down arrow key signal, the channel is moved by a main channel unit. If the right control key signal or a left arrow key signal is transmitted, a channel is included in a sub channel belonging to the currently selected main channel. Configured to move the channel.

On the other hand, according to another embodiment of the digital broadcast receiver according to the present invention, if the control signal received from the remote controller is the right direction key signal or the left direction key signal, the channel is moved in units of main channels, and if the up direction key signal or the down direction key signal is present, It is configured to move the channel in units of sub-channels belonging to the selected main channel.

According to an embodiment of the present invention, there is provided a method of switching a channel in a digital broadcasting receiver, the method including receiving, by a digital broadcasting receiver, a control signal from a remote controller; Determining whether the received control signal is one of an up, down, right and left direction key signals; A main channel shifting step of moving a channel in units of a main channel if the received control signal is an uplink key signal or a downlink key signal; And if the received control signal is a left direction key signal or a right direction key signal, a subchannel moving step of moving a channel in units of subchannels belonging to a currently selected main channel.

In the main channel shifting step, when the received control signal is an uplink key signal, the channel is moved in the unit of a main channel toward a direction in which the channel number increases, and when the received control signal is a downlink key signal, the channel number decreases. And move the channel toward the primary channel.

In the main channel shifting step, when the received control signal is a downward direction key signal, the channel is moved in the unit of a main channel toward a direction in which the channel number increases, and when the received control signal is an upward direction key signal, the channel number decreases. It can be configured to move the channel in units of the main channel toward.

In the subchannel shifting step, when the received control signal is a right direction key signal, the channel is moved in the sub-channel unit toward a direction in which the channel number increases, and when the received control signal is a left direction key signal, the channel number decreases. And move the channel in units of sub-channels.

In the sub-channel shifting step, when the received control signal is a left direction key signal, the channel is moved in the sub-channel unit toward the direction in which the channel number increases, and when the received control signal is a right direction key signal, the channel number decreases. It may be configured to move the channel in units of sub-channels toward.

When the left direction key signal or the right direction key signal is input continuously, it may be configured to cyclically move the sub-channel belonging to the corresponding main channel.

On the other hand, another embodiment of the channel switching method in the digital broadcast receiving apparatus according to the present invention, the digital broadcast receiving apparatus receiving a control signal from a remote controller; Determining whether the received control signal is one of an up, down, right and left direction key signals; A main channel shifting step of moving a channel in units of main channels if the received control signal is a right direction key signal or a left direction key signal; And a sub-channel shifting step of moving a channel in units of sub-channels belonging to the currently selected main channel if the received control signal is an up-directional key signal or a down-directional key signal.

In the main channel shifting step, when the received control signal is the right direction key signal, the channel is moved in the unit of the main channel toward the direction in which the channel number increases, and when the received control signal is the left direction key signal, the channel number decreases. And move the channel toward the primary channel.

In the main channel shifting step, when the received control signal is a leftward direction key signal, the channel is moved in the unit of a main channel toward a direction in which the channel number increases, and when the received control signal is a rightward direction key signal, the channel number decreases. It may also be configured to move the channel in units of primary channels toward.

In the subchannel shifting step, when the received control signal is an uplink key signal, the channel is moved in the unit of a subchannel toward a direction in which the channel number increases, and when the received control signal is a downward key signal, the channel number decreases. And move the channel in units of sub-channels.

In the sub-channel shifting step, when the received control signal is a downward direction key signal, the channel is moved in the sub-channel unit toward a direction in which the channel number increases, and when the received control signal is an upward direction key signal, the channel number decreases. It may also be configured to move the channel in units of sub-channels toward.

According to the present invention, the sub-channel of digital broadcasting can be freely searched using direction keys generally included in the remote controller. In particular, one main channel may include a plurality of subchannels, and thus, when the main channel is moved by the main channel unit using the direction key for main channel switching, a desired channel can be searched more quickly. In addition, it can satisfy the tendency of consumers who prefer direction keys while satisfying the different digital broadcasting standards required in emerging markets such as Brazil, and thus it is a standard on how to switch digital broadcasting channels using a remote controller. I can catch you.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, a user uses a digital broadcast service while controlling the digital broadcast receiver 10 by using a remote controller 11 that wirelessly transmits a control signal using an infrared signal or the like.

The digital broadcast receiver 10 may be configured in various forms such as a digital TV or a digital broadcast set-top box. The digital broadcast receiver 10 may receive and process digital broadcast signals from various broadcast media such as terrestrial waves, cables, and satellites, and may display a display screen and speakers. Output through

The digital broadcast receiver 10 moves a channel according to a channel switching control signal received through the remote controller 11 and processes a digital broadcast signal of a currently tuned channel.

At this time, when the received channel switching control signal is a direction key signal of the remote controller 11, the digital broadcasting reception apparatus 10 according to the present invention performs the operation of moving the channel by recognizing it as a channel switching key signal. Done.

With reference to FIG. 2, a specific example of the digital broadcast receiver 10 according to the present invention will be described.

The tuner 21 selectively receives a broadcast signal of a corresponding frequency band among digital broadcast signals received through various broadcast media under channel channel control of the controller 28.

The digital broadcast signal is configured as a transport stream in which a video signal, an audio signal, and data broadcast information are time-division multiplexed and packetized.

The broadcast signal received through the tuner 21 is demodulated and error-corrected by the demodulator 22 and output in the form of a transport stream. The video signal and the audio signal are decoded by the demultiplexer 23. And various additional data defined by PSIP information are separated and output in the form of a bit stream.

The video data separated by the demultiplexer 23 is a compressed bit stream signal of an MPEG method, which is decoded by the MPEG decoder 24-1 and processed by the image signal processor 25 to display the display unit ( 26).

At this time, the image signal processing unit 25 includes a scaler to adjust the vertical frequency, resolution, aspect ratio, etc. of the video signal to match the output standard of the display unit 26. The display unit 26 may be configured by using various types of display modules such as digital light processing (DLP), liquid crystal display (LCD), and plasma display panel (PDP).

The audio data separated by the demultiplexer 23 is a compressed bit stream signal of the AC-3 scheme, decoded by the AC-3 decoder 24-2, and output to the speaker unit 27.

The various additional data included in the PSIP information separated by the demultiplexer 23 are stored for each data table by the controller 28, and data requiring display of the screen among the additional data is controlled by the controller 28. Accordingly, the image signal is processed by the image processing unit 25 and synthesized with the video signal, and then output through the display unit 26.

The channel map storage unit 29-1 stores each channel list through which the current broadcast signal is received, and the user can search for a desired channel by using the channel list.

The IR receiver 29-2 serves to receive the infrared control signal transmitted by the remote controller 11, and the received control signal is transmitted to the controller 28.

The controller 28 collectively controls the digital broadcast receiver 10 according to a user's control signal received through the IR receiver 29-2, and stores the channel list stored in the channel map storage unit 29-1. In accordance with this, the channel of the digital broadcast receiver 10 is moved.

In particular, when the control signal received through the IR receiver 29-2 is a direction key signal, the controller 28 recognizes it as a channel switching key signal and performs an operation of moving a channel.

As an example, if the channel switching control signal received through the IR receiver 29-2 is an up arrow key signal or a down arrow key signal, the controller 28 moves the channel in units of a main channel, and a right arrow key signal or a left arrow key signal. In this case, the channel can be moved in the unit of the sub channel belonging to the currently selected main channel.

As another example, if the control signal for channel switching received through the IR receiver 29-2 is a right direction key signal or a left direction key signal, the controller 28 moves the channel in units of main channels, and the up direction key signal or the down direction key. If it is a signal, the channel can be moved in units of sub-channels belonging to the currently selected main channel.

Referring to FIG. 3, an embodiment of a channel switching method in a digital broadcast receiver according to the present invention will be described.

When the user transmits a control signal using the remote controller 11, it is received by the digital broadcast receiver 10 through the IR receiver 29-2 (S31).

If the control signal received through the step S31 is not any one of the up direction key signal, the down direction key signal, the right direction key signal, and the left direction key signal (S32), the control unit 28 of the digital broadcast receiving apparatus 10 responds to the corresponding key signal. In response, the digital broadcast receiver 10 is operated (S36). For example, if the control signal received through step S31 is a volume up signal, the volume of the digital broadcast receiver 10 is increased. If the power signal is a power on / off signal, the digital broadcast receiver 10 is powered on / off. Turn off

Here, the up direction key signal, the down direction key signal, the right direction key signal, and the left direction key signal are signals generated by operating the up, down, right and left direction keys, respectively, among the direction keys generally included in the remote controller 11. .

However, if the control signal received through the step S31 is an up direction key signal or a down direction key signal (S33), the controller 28 selects each channel of the channel list stored in the channel map storage unit 29-1 as the main channel. Channel) unit (S34).

In addition, if the control signal received through step S31 is a right direction key signal or a left direction key signal (S33), the controller 28 currently selects each channel in the channel list stored in the channel map storage unit 29-1. It moves to the unit of the minor channel (Minor Channel) belonging to the main channel (S35).

Meanwhile, in step S34, two channel movement directions may be set.

Referring to FIG. 4A, if the control signal received through the step S31 is an upward direction key signal, the controller 28 moves the channel in units of main channels toward the direction in which the channel number increases (S41-1, S41-2) and downwards. If the direction key signal is used, the channel can be moved in the unit of the main channel toward the direction in which the channel number decreases (S41-1, S41-3).

Referring to FIG. 4B, if the control signal received through the step S31 is a downward direction key signal, the controller 28 moves the channel in units of main channels toward the direction in which the channel number increases (S42-1, S42-2), and moves upward. If the direction key signal is used, the channel can be moved in the unit of the main channel toward the direction in which the channel number decreases (S42-1, S42-3).

Step S35 may also set two channel movement directions.

Referring to FIG. 5A, if the control signal received through step S31 is a right direction key signal, the control unit 28 moves the channel in units of sub-channels toward the direction in which the channel number increases (S51-1, S51-2). If the direction key signal is used, the channel can be moved in units of sub-channels toward the direction in which the channel number decreases (S51-1, S51-3).

Referring to FIG. 5B, if the control signal received through step S31 is a left direction key signal, the control unit 28 moves the channel in units of subchannels toward the direction in which the channel number increases (S52-1, S52-2), and the right direction. If the direction key signal is used, the channel can be moved in units of sub-channels toward the direction in which the channel number decreases (S52-1, S52-3).

In addition, if the left direction key signal or the right direction key signal is continuously received, it may be configured to cyclically move the sub-channel in the corresponding direction.

A detailed example of channel movement according to the present invention will be described with reference to FIG. 6.

At this time, 6-1, 6-2, 7-1, 9-1, 9-2, 9-3, 10-1, 10- in the channel map storage unit 29-1 of the digital broadcast receiver 10. It is assumed that 10 channels 2, 11-1, and 11-3 are stored, and subchannel 9-2 is currently selected. That is, the user is currently watching channel 9-2 and wants to move to another channel.

If the user operates the up arrow key 61 of the remote controller 11, the channel moves in the unit of the main channel, so the channel moves in the order of 10-1, 11-1 (or 7-1, 6-1). If the user has operated the downward direction key 62 of the remote controller 11, the channel moves in the order of 7-1 and 6-1 (or in the order of 10-1 and 11-1).

However, if the user has operated the right direction key 63 or the left direction key 64 of the remote controller 11, the sub channel of the currently selected main channel 9-1: main channel to which channel 9-2 belongs. Channel shifts for (9-1, 9-2, 9-3) are made.

That is, if the user has operated the right direction key 63 of the remote controller 11, the channel in the order of 9-3, 9-1, 9-2 (or the order of 9-1, 9-3, 9-2). Is moved and the user operates the left direction key 64 of the remote controller 11, the order of 9-1, 9-3, 9-2 (or the order of 9-3, 9-1, 9-2). The channel moves to.

That is, the user can easily move the main channel and the sub channel selectively by manipulating the direction keys of the remote controller 11 which is generally gathered together to conveniently move the channels.

In addition, one main channel may include a plurality of sub-channels, and when the up arrow key or the down arrow key of the remote controller 11 moves in units of the main channel, a desired channel can be searched more quickly.

Referring to FIG. 7, another embodiment of a channel switching method in the digital broadcast receiver according to the present invention will be described.

When the user transmits a control signal using the remote controller 11, it is received by the digital broadcast receiver 10 through the IR receiver 29-2 (S71).

If the control signal received through the step S71 is not any one of the up direction key signal, the down direction key signal, the right direction key signal, and the left direction key signal (S72), the control unit 28 of the digital broadcast receiving apparatus 10 responds to the corresponding key signal. In response, the digital broadcast receiver 10 is operated (S76). For example, if the control signal received through step S71 is a volume up signal, the volume of the digital broadcast receiver 10 is turned up. If the power signal is a power on / off signal, the power of the digital broadcast receiver 10 is turned on / off. Turn off

Here, the up direction key signal, the down direction key signal, the right direction key signal, and the left direction key signal are signals generated by operating the up, down, right and left direction keys, respectively, among the direction keys generally included in the remote controller 11. .

However, if the control signal received through step S71 is a right direction key signal or a left direction key signal (S73), the controller 28 selects each channel of the channel list stored in the channel map storage unit 29-1 as the main channel. Channel) unit (S74).

In addition, if the control signal received through the step S71 is an up direction key signal or a down direction key signal (S73), the controller 28 currently selects each channel in the channel list stored in the channel map storage unit 29-1. The method moves to the unit of the minor channel belonging to the main channel (S75).

Meanwhile, in step S74, two channel movement directions may be set.

Referring to FIG. 8A, if the control signal received through step S71 is a right direction key signal, the control unit 28 moves the channel in units of main channels toward the direction in which the channel number increases (S81-1, S81-2) and turns left. If the direction key signal is used, the channel can be moved in the unit of the main channel toward the direction in which the channel number decreases (S81-1, S81-3).

Referring to FIG. 8B, if the control signal received through step S71 is a left direction key signal, the controller 28 moves the channel in units of main channels toward the direction in which the channel number increases (S82-1, S82-2), and the right direction. If the direction key signal is used, the channel can be moved in units of main channels toward the direction in which the channel number decreases (S82-1, S82-3).

Step S75 may also set two channel movement directions.

Referring to FIG. 9A, if the control signal received through step S71 is an uplink key signal, the control unit 28 moves the channel in units of subchannels toward the direction in which the channel number increases (S91-1, S91-2). If the direction key signal is used, the channel can be moved in sub-channel units toward the direction in which the channel number decreases (S91-1, S91-3).

Referring to FIG. 9B, if the control signal received through step S71 is a downward direction key signal, the controller 28 moves the channel in units of sub-channels toward the direction in which the channel number increases (S92-1, S92-2), and moves upward. If the direction key signal is used, the channel can be moved in units of sub-channels toward the direction in which the channel number decreases (S92-1, S92-3).

In addition, if the up direction key signal or the down direction key signal is continuously received, it may be configured to cyclically move the sub-channel in the corresponding direction.

A detailed example of channel movement according to the present invention will be described with reference to FIG. 10.

At this time, 6-1, 6-2, 7-1, 9-1, 9-2, 9-3, 10-1, 10- in the channel map storage unit 29-1 of the digital broadcast receiver 10. It is assumed that 10 channels 2, 11-1, and 11-3 are stored, and subchannel 9-2 is currently selected. That is, the user is currently watching channel 9-2 and wants to move to another channel.

If the user operates the right direction key 63 of the remote controller 11, the channel moves in the unit of the main channel, so the channel moves in the order of 10-1, 11-1 (or 7-1, 6-1). If the user manipulates the left direction key 64 of the remote controller 11, the channel moves in the order of 7-1 and 6-1 (or the order of 10-1 and 11-1).

However, if the user has operated the up arrow 61 or the down arrow 62 of the remote controller 11, the sub channel of the currently selected main channel 9-1: main channel to which channel 9-2 belongs. Channel shifts for (9-1, 9-2, 9-3) are made.

That is, if the user has operated the upward direction key 61 of the remote controller 11, the channel in the order of 9-3, 9-1, 9-2 (or the order of 9-1, 9-3, 9-2). Is moved, and the user operates the downward direction key 62 of the remote controller 11, the order of 9-1, 9-3, 9-2 (or the order of 9-3, 9-1, 9-2). The channel moves to.

That is, the user can easily move the main channel and the sub channel selectively by manipulating the direction keys of the remote controller 11 which is generally gathered together to conveniently move the channels.

Each embodiment described above is intended to help the understanding of the present invention, the present invention is not limited to the above embodiments and can be variously modified and implemented by those skilled in the art without departing from the technical spirit of the present invention. Of course.

1 is an overview of a digital broadcast receiver;

2 is a diagram illustrating a configuration of a digital broadcast receiver according to the present invention;

3 is an embodiment of a channel switching method according to the present invention;

4 and 5 are examples of changing the channel movement direction according to the type of the direction key signal,

6 is a specific example of channel movement according to the present invention;

7 is another embodiment of a channel switching method according to the present invention;

8 and 9 illustrate examples of changing a channel moving direction according to the type of direction key signal according to another embodiment;

10 is a specific example of channel movement in accordance with the present invention in another embodiment.

* Explanation of symbols for main parts of the drawings

10: digital broadcast receiver 11: remote controller

21: Tuner part 22: Demodulation part

23: demultiplexer 24-1: MPEG decoder

24-2: AC-3 decoder 25: Video signal processor

26: display unit 27: speaker unit

28: control unit 29-1: channel map storage unit

29-2: IR receiver 61 ~ 64: direction key

Claims (14)

Receiving, by the digital broadcasting receiver, a control signal from a remote controller; Determining whether the received control signal is one of an up, down, right and left direction key signals; A main channel shifting step of moving a channel in units of a main channel if the received control signal is an uplink key signal or a downlink key signal; And And a sub-channel shifting step of shifting a channel in units of sub-channels belonging to a currently selected main channel if the received control signal is a left direction key signal or a right direction key signal. . The method of claim 1, wherein the main channel movement step is If the received control signal is an upward direction key signal, the channel is moved in the unit of main channel toward the direction of increasing the channel number. If the received control signal is a downward direction key signal, the channel is moved toward the direction of decreasing the channel number. And a channel switching method in a digital broadcast receiver, configured to move. The method of claim 1, wherein the main channel movement step is If the received control signal is a downward direction key signal, the channel is moved in the unit of main channel toward the direction in which the channel number increases. And a channel switching method in a digital broadcast receiver, configured to move. The method of claim 1, wherein the sub-channel moving step If the received control signal is a right direction key signal, the channel is moved in the sub-channel unit toward the direction in which the channel number increases. If the received control signal is a left direction key signal, the channel is moved in the sub channel unit toward the direction in which the channel number decreases. And a channel switching method in a digital broadcast receiver, configured to move. The method of claim 1, wherein the sub-channel moving step If the received control signal is a left direction key signal, the channel is moved in the sub-channel unit toward the direction in which the channel number increases. And a channel switching method in a digital broadcast receiver, configured to move. The method according to any one of claims 1 to 5, And the sub-channel belonging to the main channel is cyclically moved as the left direction key signal or the right direction key signal is continuously input. Receiving, by the digital broadcasting receiver, a control signal from a remote controller; Determining whether the received control signal is one of an up, down, right and left direction key signals; A main channel shifting step of moving a channel in units of main channels if the received control signal is a right direction key signal or a left direction key signal; And And a sub-channel shifting step of shifting a channel in units of sub-channels belonging to a currently selected main channel if the received control signal is an up-directional key signal or a down-directional key signal. . 8. The method of claim 7, wherein the main channel movement step is If the received control signal is the right direction key signal, the channel is moved in the unit of main channel toward the direction of increasing the channel number. If the received control signal is the left direction key signal, the channel is moved in the direction of the main channel unit in the direction of decreasing the channel number. And a channel switching method in a digital broadcast receiver, configured to move. 8. The method of claim 7, wherein the main channel movement step is If the received control signal is a left direction key signal, the channel is moved in the unit of main channel toward the direction in which the channel number increases, and if the received control signal is a right direction key signal, the channel is in the main channel unit in the direction in which the channel number decreases. And a channel switching method in the digital broadcasting receiver. The method of claim 7, wherein the sub-channel moving step If the received control signal is an uplink key signal, the channel is moved in the sub-channel unit toward the direction in which the channel number is increased. And a channel switching method in a digital broadcast receiver, configured to move. The method of claim 7, wherein the sub-channel moving step If the received control signal is a downward direction key signal, the channel is moved in the sub channel unit toward the direction in which the channel number increases. And a channel switching method in a digital broadcast receiver, configured to move. The method according to any one of claims 7 to 11, And a sub-channel belonging to a corresponding main channel is cyclically moved as the upward direction key signal or the downward direction key signal is continuously input. In the digital broadcast receiver for moving a channel according to a control signal received from a remote controller, receiving and processing a digital broadcast signal of the currently tuned channel and outputting it through a display screen and a speaker, If the received control signal is an up direction key signal or a down direction key signal, the channel is moved in units of a main channel, and if the right direction key signal or a left direction key signal is configured to move the channel in units of a sub channel belonging to the currently selected main channel. Digital broadcast receiver, characterized in that. In the digital broadcast receiver for moving a channel according to a control signal received from a remote controller, receiving and processing a digital broadcast signal of the currently tuned channel and outputting it through a display screen and a speaker, When the received control signal is a right direction key signal or a left direction key signal, the channel is moved in units of main channels, and if the up direction key signal or a down direction key signal is configured to move the channel in units of subchannels belonging to the currently selected main channel. Digital broadcast receiver, characterized in that.

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