KR20100052688A - Broadcast receiving device and control method thereof - Google Patents

Abstract

PURPOSE: A broadcasting receiver and a operation method thereof are provided, which proceed channel switching between groups or within the same group according to user command, make movement or selection between broadcasting channels facile. CONSTITUTION: A control unit(120) decides a group of a broadcast channel based on a genre ratio of a broadcasting signals. The Control unit automatically groups broadcasting channels. The broadcasting signals are received from one broadcast channel. The control unit calculates a genre rate of broadcasting signals through broadcasting program information about a broadcast channel. If the genre of rate higher than a preset threshold ratio exists among genres of broadcasting signals, a control unit decides genre as a group.

Description

Broadcast receiving device and control method

The present invention relates to a broadcast receiving apparatus and a control method thereof, and more particularly, to a broadcast receiving apparatus for automatically grouping a plurality of broadcast channels and a control method thereof.

In today's 21st century, the color TV market is saturated and the number of TV receiver replacement cycles is 20 years, which raises the need for a new broadcast receiver market. There is a need for a broadcast receiving apparatus having another format capable of storing and reproducing an external video signal and exchanging various information through a transmission medium such as a cable.

In response to the changing demands of the times, in order to satisfy the various needs of viewers and to form a new TV market, digital TVs with multimedia functions have been introduced to overcome the limitations of existing analog technologies.

On the other hand, multi-channel TV broadcasting, such as cable TV broadcasting or digital TV broadcasting, provides programs in an unpredictably large number of channels, compared to conventional analog TV broadcasting providing programs in fewer than 10 channels.

As the number of channels increases, it takes a long time to select a channel by using a channel up / down key provided in a remote controller or a key panel. However, even in the case of channels that are not frequently watched, there is a problem in that it is cumbersome to find one by one and remove it with the "erase" button, and there is a inconvenience in removing the channel, and thus, it is a problem that the user cannot take the inconvenience without being removed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a broadcast display device and a method of controlling the same that facilitate movement and selection between a plurality of broadcast channels.

According to an embodiment of the present disclosure, the present broadcast reception device may include a receiver that receives a broadcast signal through a broadcast channel, and a group to which the broadcast channel belongs based on a genre ratio of broadcast signals received on one broadcast channel. And a controller for automatically grouping the plurality of broadcast channels.

In this case, the controller may calculate a genre ratio of broadcast signals of the broadcast channel using the broadcast program information for the broadcast channel.

Here, if a genre occupying a ratio higher than a predetermined threshold ratio among the genres of broadcast signals received in the one broadcast channel exists, the controller may determine the genre as a group to which the one broadcast channel belongs.

The controller may be further configured to select a group to which the one broadcast channel belongs, if a plurality of genres occupying a ratio higher than a predetermined threshold ratio among genres of broadcast signals received through the one broadcast channel exist. Each can be decided.

The controller may determine that the one broadcast channel belongs to an integrated channel when no genre occupying a ratio higher than a predetermined threshold ratio exists among genres of broadcast signals received on the one broadcast channel. .

In addition, the storage unit for storing group information and broadcast channel information belonging to the group; And a display unit configured to display the group information stored in the storage unit and broadcast channel information belonging to the group.

The controller may update at least one of the group information and the broadcast channel information belonging to the group by using the broadcast program information received during a preset period.

The apparatus may further include an input unit configured to receive a user command, and the controller may perform channel switching between different groups or within the same group according to the user command.

The controller may control the display unit to display the group information and the broadcast channel information belonging to the group according to the priority of the groups.

On the other hand, the control method of the broadcast receiving apparatus according to an embodiment of the present invention, the step of receiving a broadcast signal through a broadcast channel, the group to which the broadcast channel belongs based on the genre ratio of the broadcast signals received in one broadcast channel And determining, to automatically group the plurality of broadcast channels.

In this case, in the grouping, the genre ratio of the broadcast signals of the broadcast channel may be calculated using the broadcast program information for the broadcast channel.

Here, in the grouping, if there is a genre that occupies a higher ratio than a predetermined threshold ratio among genres of broadcast signals received on one broadcast channel, the genre may be determined as a group to which the one broadcast channel belongs. have.

The grouping may include: when a plurality of genres occupying a ratio higher than a predetermined threshold ratio among genres of broadcast signals received in the one broadcast channel exist, the plurality of groups to which the one broadcast channel belongs belongs to the plurality of genres. Each genre can be determined.

The grouping may include determining that the one broadcast channel belongs to an integrated channel when no genre occupying a ratio higher than a predetermined threshold ratio exists among genres of broadcast signals received on the one broadcast channel. Can be.

The method may further include storing group information and broadcast channel information belonging to the group; And displaying the group information and the broadcast channel information belonging to the group.

The method of claim 1, further comprising updating at least one of the group information and the broadcast channel information belonging to the group by using the broadcast program information received during a preset period.

The method may further include receiving a user command and performing channel switching between different groups or within the same group according to the user command.

The displaying may include displaying the group information and broadcast channel information belonging to the group according to the priority of the groups.

Accordingly, it is easy to move or select between a plurality of broadcast channels.

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

1 is a block diagram illustrating a configuration of a broadcast receiving apparatus according to an embodiment of the present invention. According to FIG. 1, the broadcast reception device 100 includes a receiver 110 and a controller 120.

The broadcast receiving device 100 has a function of receiving various video signals, and in particular, may receive and display broadcast signals from the outside. For example, the broadcast receiving device 100 may be implemented as a digital TV, and in some cases, a computer capable of receiving broadcasts, a DMB receiver, a mobile phone, a personal digital assistant (PDA), a set-top box, It is also possible to be implemented as a composite receiver that selectively integrates them.

The receiver 110 receives a broadcast signal through an antenna, a cable, or the like, or receives an image from an external device or an external communication network. For example, when the broadcast receiving device 100 is implemented as a digital TV, the receiver 110 may be implemented as a tuner for tuning a digital channel.

The controller 120 determines a group to which a broadcast channel belongs based on a genre ratio of broadcast signals received from one broadcast channel, and automatically groups a plurality of broadcast channels.

In this case, the controller 120 may calculate the genre ratio of the broadcast signals of the broadcast channel using the broadcast program information for the broadcast channel. For example, the controller 120 may use genre information of a broadcast program included in electronic program guide (EPG) information.

In detail, when a genre occupying a ratio higher than a predetermined threshold ratio exists among the genres of broadcast signals received on one broadcast channel, the controller 120 may determine the genre as a group to which one broadcast channel belongs.

In addition, if there are a plurality of genres that occupy a higher ratio than a preset threshold ratio among the genres of broadcast signals received on one broadcast channel, the controller 120 may select a group to which one broadcast channel belongs to each of the plurality of genres. You can decide.

In addition, the controller 120 may determine that one broadcast channel belongs to an integrated channel when no genre occupying a ratio higher than a predetermined threshold ratio exists among genres of broadcast signals received on one broadcast channel.

Here, the criteria for grouping broadcast channels may be automatically set or preset based on genres of broadcast signals, and may be implemented to be set by a user in some cases. Accordingly, the user can group and manage channels that are not frequently watched.

FIG. 2 is a block diagram illustrating a detailed configuration of the broadcast receiving apparatus shown in FIG. 1. According to FIG. 2, the broadcast reception device 200 includes a receiver 210, a controller 220, a storage 230, a display 240, an input 250, and a signal processor 260. A detailed description of parts overlapping with those shown in FIG. 1 among the elements shown in FIG. 2 will be omitted.

The receiver 210 functions to receive a broadcast signal through a broadcast channel.

The controller 220 determines a group to which a broadcast channel belongs based on a genre ratio of broadcast signals received from one broadcast channel, and automatically groups a plurality of broadcast channels.

In this case, the controller 220 may calculate a genre ratio of broadcast signals of the broadcast channel using the broadcast program information for the broadcast channel. For example, the controller 220 may use genre information of a broadcast program included in electronic program guide (EPG) information.

In detail, if a genre occupying a ratio higher than a predetermined threshold ratio exists among the genres of broadcast signals received in one broadcast channel, the controller 220 may determine the genre as a group to which one broadcast channel belongs.

In addition, when there are a plurality of genres that occupy a higher ratio than a predetermined threshold ratio among the genres of broadcast signals received in one broadcast channel, the controller 220 may select a group to which one broadcast channel belongs to each of the plurality of genres. You can decide.

In addition, the controller 220 may determine that one broadcast channel belongs to an integrated channel when no genre occupying a ratio higher than a predetermined threshold ratio exists among genres of broadcast signals received in one broadcast channel.

Here, the criteria for grouping broadcast channels may be automatically set or preset based on genres of broadcast signals, and may be implemented to be set by a user in some cases.

In addition, when a new channel is created, the controller 220 may automatically set a group to which the corresponding channel belongs.

The storage unit 230 is a recording medium in which programs and information data necessary for the controller 220 to drive and control the broadcast receiving apparatus 200 are stored. In particular, the storage unit 230 functions to store group information grouped by the control unit 220 and broadcast channel information belonging to the group. Here, the storage unit 230 may be implemented as an EEPROM, a FLASH ROM, or the like capable of storing data.

In this case, the controller 220 may update at least one of the group information stored in the storage 230 and the broadcast channel information belonging to the group by using the broadcast program information received for a preset period.

The display unit 240 displays group information stored in the storage unit 230 and broadcast channel information belonging to a group. Here, various types of digital light processing (DLP), liquid crystal display (LCD), plasma display panel (PDP), and the like may be applied to the display unit 240.

In this case, the controller 220 may control the display unit 240 to display group information and broadcast channel information belonging to the group according to the priority of the groups. Here, the group information may be information for identifying a group such as "integrated channel", "sports channel", "movie channel", and the like. The channel information may be a channel number such as "CH 7" and "CH 9". .

In addition, the controller 220 may adjust the size, position, and transparency of the group region displaying the group information and the channel information belonging to the screen according to a preset pattern, and arrange the same on the screen provided by the display 240. In this case, the size of the group region can be adjusted to be the same or different from each other, and the position can also be adjusted in various forms.

For example, the size and location allocation of each group region may be set in consideration of the user's preference, frequency of use, characteristics of each group, and the like. For example, a group area having a higher user preference and a higher frequency of use than another group area may be displayed before another group area, and may be set to be assigned a larger display area.

Alternatively, the size and location allocation of the group area may be made according to basic information set in each group area or user definition without considering the user environment.

The input unit 250 functions to receive a user command for selecting a channel, and may be implemented in various ways such as a key panel, a remote controller, and voice recognition means. Meanwhile, when the input unit 250 is configured as a remote controller, the broadcast receiving device 200 may include a remote controller receiver. The remote control receiver receives a remote control signal received from the remote control. In addition, the remote control may transmit a control signal to the broadcast receiving device 200 using a short range wireless communication technology such as infrared communication, Bluetooth, and the like. In some cases, the remote controller may control the broadcast reception device 200 through a wired connection rather than a wireless connection.

The controller 220 may perform channel switching between different groups or within the same group according to a user command input through the input unit 250.

In detail, when the group information and the broadcast channel information belonging to the group are arranged according to a preset pattern, the controller 220 displays a cursor on the sorted group information and the channel information, and between the different groups according to a user direction operation. Alternatively, the position of the cursor in the same group may be moved to perform channel switching between different groups or within the same group. Here, the cursor may be moved by manipulation of a direction button provided in the remote controller and a direction button provided in the broadcast receiving device 200 itself. In this case, the cursor may be embodied in various forms such that the group and channel information where the cursor is located can be distinguished from other group and channel information, such as a border shape, a blinking shape, and a shaded shape.

In this case, the direction keys (for example, ▶, ◀, ▲, ▼ keys) provided on the remote controller (not shown) may provide a navigation signal for performing channel navigation between different groups or within the same group. .

The signal processor 260 converts a signal received through the receiver 210 into a signal in a format that the display 210 can process and processes the signal. In addition, the signal processor 260 may perform signal processing necessary for the broadcast program information signal received through the receiver 210 if necessary.

The signal processor 260 may include a decoder for decoding a received Composite Video Broadcast Signal (CVSB) signal or an S-Video signal, an A / D converter for converting a received component signal or a PC-signal analog signal into a digital signal, DVI- It may include various components required for signal processing, such as a Transition Minimized Differential Signaling (TMDS) receiver that separates signals into R, G, and B digital signals and H / V signals.

In addition, the signal processor 260 may include a scaler for converting the converted signal into a vertical frequency, a resolution, an aspect ratio, etc. according to an output standard of the display 240. In this case, the display 240 may display the image signal processed by the signal processor 260 on the screen.

3 is a diagram for describing a method of grouping channels according to an embodiment of the present invention.

Referring to FIG. 3, genre statistics of programs corresponding to each broadcast channel and group classification corresponding thereto are illustrated. For convenience of explanation, the case where the threshold ratio for classifying the genre of each broadcasting channel is set to 40% will be described as an example.

First, referring to the left side of the case of CH 3, 90% of sports programs and 10% of advertising programs take up the entire CH 3 program. In this case, since the sports program occupies a ratio higher than the preset threshold ratio 40%, CH3 is classified as a sports channel as shown on the right. In this case, the genre of the group "sports channel" may be automatically set, but in some cases, it may be preset or configured by the user.

In addition, in the case of CH 4 and 6, the movie program and the home shopping program respectively account for 90% and 100% (higher than the preset threshold ratio of 40%) of all the channels, and CH 4 and 6 respectively represent the movie channel and home shopping. Can be classified as a channel.

On the other hand, in the case of CH 5, sports programs account for 50%, entertainment / entertainment programs 40%, and advertising programs 10% of the total programs of CH 5. In this case, since there are two sports programs (50%) and entertainment / entertainment programs (40%) which occupy a ratio higher than the predetermined threshold ratio of 40%, CH 5 may be classified into sports channels and entertainment / entertainment channels. That is, they may belong to different groups of "sports channel group" and "entertainment / entertainment channel group" or, in some cases, to one group of "sports and entertainment / entertainment channel group". This may be variously applied according to various embodiments of the present disclosure.

In the case of CH 1, 30% of drama programs, 20% of current affairs and documentary programs, and 20% of general education / information genre programs, so there is no broadcast program genre having a threshold ratio of 40% or more. In this case, CH 1 may be classified as an integrated channel. CH 2 may also be classified as an integrated channel in the same way as CH 1 since there is no broadcast program genre having a critical ratio of 40% or more.

4A and 4B are diagrams for describing a group display method according to various embodiments of the present disclosure.

According to FIG. 4A, a plurality of broadcast channels are grouped by the grouping method shown in FIG. 3. In this case, according to an embodiment of the present invention, all channels (CHs 5, 7, 9, 11, 12, and 13) having no broadcast program genres occupying a predetermined threshold ratio or more may be classified as integrated channels.

According to FIG. 4B, the terrestrial channels CH 5, 7, 9 and 11 may be classified separately regardless of a predetermined threshold ratio. That is, in the case of the terrestrial channel, even if there is no broadcast program genre that occupies a predetermined threshold ratio, the terrestrial channel may be classified as a "terrestrial channel" rather than an integrated channel, and only the remaining channels may be grouped in consideration of the threshold ratio. Accordingly, it is possible to improve the convenience of the user mainly watching the terrestrial channel.

5A and 5B are diagrams for describing a group switching and channel switching method according to an embodiment of the present invention. For convenience of explanation, an example in which the input unit 250 is implemented as the remote controller 10 as illustrated in FIG. 5A will be described.

As shown in FIG. 5A, the remote controller 10 may include a predetermined selection key 11, a numeric key 12, and a direction key 130. As shown in FIGS. 4A and 4B, a user may use a selection key 11 separately provided on the remote controller 10 or a plurality of broadcast channels provided by the broadcast reception device 200 through an OSD menu. It can be displayed in group form.

In addition, the user may select a desired broadcast channel using the numeric keys 12 or navigate to a desired channel using the direction keys 13. Since a method of selecting a channel using the numeric keys 12 is the same as in the related art, detailed description thereof will be omitted.

According to an embodiment of the present invention, the user may perform channel switching between groups or within groups using the direction key 13.

Taking the screen shown in FIG. 4A as an example, the user may perform channel switching using the ▲ and ▼ keys. In this case, as shown in FIG. 5B (A), the channel is switched in the order of the broadcast channels displayed on the screen (... CH 12 → CH 13 → CH 14 → CH 20 ..) by using the ▲ and ▼ keys. Can be.

In addition, users can switch between groups using the ▶, ◀ keys in the order of the groups displayed on the screen. In this case, as shown in FIG. 5B (B), switching between groups may be performed while the broadcasting channels (CH 5 → CH 14 → ... → CH 21) located at the top of each group are sequentially selected. have.

6 is a diagram illustrating an update method according to an embodiment of the present invention.

According to FIG. 6, existing grouping information may be updated using broadcast program information received for a predetermined period (eg, 3 days). As shown, broadcast program information received from day 1 to 3 (for "A"), broadcast program information received from day 2 to 4 (for "B"), received from day 3 to 5 By using the broadcast program information (in the case of "C"), the grouping information may be updated daily using the broadcast program information for the previous 3 days. However, this is only an example, and a predetermined period used for updating the grouping information may be variously changed.

7 is a flowchart illustrating a control method of a broadcast receiving apparatus according to an embodiment of the present invention.

According to the control method of the broadcast receiving apparatus illustrated in FIG. 7, when a broadcast signal is received through a broadcast channel (S710), a group to which the corresponding broadcast channel belongs is determined based on a genre ratio of broadcast signals received from one broadcast channel. In operation S720, the plurality of channels are automatically grouped.

In this case, in step S720, the genre ratio of the broadcast signals of the broadcast channel may be calculated using the broadcast program information for the broadcast channel.

In operation S720, if there is a genre that occupies a higher ratio than a predetermined threshold ratio among genres of broadcast signals received on one broadcast channel, the genre may be determined as a group to which the corresponding broadcast channel belongs.

In operation S720, when a plurality of genres occupying a ratio higher than a predetermined threshold ratio among genres of broadcast signals received on one broadcast channel exist, a group to which the corresponding broadcast channel belongs may be determined as each of the plurality of genres. have.

In operation S720, if there is no genre that occupies a ratio higher than a predetermined threshold ratio among the genres of broadcast signals received in one broadcast channel, it may be determined that the corresponding broadcast channel belongs to the integrated channel.

In operation S720, group information grouped and broadcast channel information belonging to a group may be stored.

In addition, stored group information and broadcast channel information belonging to a group may be displayed. Here, group information and broadcast channel information belonging to a group may be displayed according to the priority of the groups, and the priority of the groups may be set according to user preference, frequency of use, and the like.

In addition, at least one of the stored group information and the broadcast channel information belonging to the group may be updated using the broadcast program information received during the preset period.

In addition, channel switching between different groups or within the same group may be performed according to a user command.

8 is a flowchart illustrating a control method of the broadcast receiving apparatus shown in FIG. 7 in detail.

According to the control method of the broadcast receiving apparatus shown in FIG. 8, when a broadcast signal is received through a broadcast channel (S810), a genre ratio of broadcast signals of a broadcast channel is calculated using broadcast program information for the broadcast channel ( S820).

As a result of the calculation in step S820, if there is a genre that occupies a higher ratio than a preset threshold ratio among the genres of broadcast signals received in one broadcast channel (S830: Y), the genre is determined as a group to which the corresponding broadcast channel belongs. (S840).

In addition, as a result of the calculation in step S820, if there is no genre that occupies a ratio higher than a predetermined threshold ratio among the genres of broadcast signals received in one broadcast channel (S830: N), the corresponding broadcast channel is included in the unified channel. It may be determined to belong (S850).

In addition, as a result of the calculation in operation S820, when there are a plurality of genres that occupy a ratio higher than a predetermined threshold ratio among the genres of broadcast signals received on one broadcast channel, each of the groups belonging to the corresponding broadcast channel is included in the plurality of genres. Can be determined.

In some cases, a terrestrial broadcast channel may be grouped separately regardless of a preset threshold ratio.

In operation S820, the group information grouped and the broadcast channel information belonging to the group may be stored.

In addition, if there is a user command (S860), if there is a user command (S860: Y), stored group information and broadcast channel information belonging to a group may be displayed (S870). Here, group information and broadcast channel information belonging to a group may be displayed according to the priority of the groups, and the priority of the groups may be set according to user preference, frequency of use, and the like.

In addition, at least one of the stored group information and the broadcast channel information belonging to the group may be updated using the broadcast program information received during the preset period.

In addition, channel switching between different groups or within the same group may be performed according to a user command.

Accordingly, it is easy to move or select between a plurality of broadcast channels.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a block diagram showing a configuration of a broadcast receiving apparatus according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a detailed configuration of the broadcast reception device shown in FIG. 1;

3 is a view for explaining a grouping method according to an embodiment of the present invention;

4A and 4B are diagrams for describing a group display method according to various embodiments of the present disclosure;

5A and 5B are diagrams for describing a group switching and channel switching method according to an embodiment of the present invention;

6 is a view for explaining an update method according to an embodiment of the present invention;

7 is a flowchart illustrating a control method of a broadcast receiving apparatus according to an embodiment of the present invention;

8 is a flowchart illustrating a control method of the broadcast receiving apparatus shown in FIG. 7 in detail.

Explanation of symbols on the main parts of the drawing

110, 210: receiver 120, 220: controller

230: storage unit 240: display unit

250: input unit 260: signal processing unit

Claims (18)

A receiver which receives a broadcast signal through a broadcast channel; And And a controller configured to automatically group a plurality of broadcast channels by determining a group to which the broadcast channel belongs based on a genre ratio of broadcast signals received in one broadcast channel. The method of claim 1, The control unit, And a genre ratio of the broadcast signals of the broadcast channel is calculated using the broadcast program information for the broadcast channel. The method of claim 1, The control unit, And a genre that occupies a ratio higher than a predetermined threshold ratio among genres of broadcast signals received in the one broadcast channel, determines the genre as a group to which the one broadcast channel belongs. The method of claim 1, The control unit, When a plurality of genres occupying a ratio higher than a predetermined threshold ratio among genres of broadcast signals received in the one broadcast channel exist, the group to which the one broadcast channel belongs is determined as the plurality of genres, respectively. Broadcast receiving apparatus. The method of claim 1, The control unit, If there is no genre that occupies a higher ratio than a preset threshold ratio among the genres of broadcast signals received in the one broadcast channel, the broadcast reception device according to claim 1, wherein the one broadcast channel is determined to belong to an integrated channel. . The method of claim 1, A storage unit which stores group information and broadcast channel information belonging to the group; And, And a display unit for displaying the group information stored in the storage unit and the broadcast channel information belonging to the group. The method of claim 6, The control unit, And updating at least one of the group information and the broadcast channel information belonging to the group by using the broadcast program information received during a preset period. The method of claim 6, It further includes an input unit for receiving a user command, The control unit, And a channel switching between different groups or within the same group according to the user command. The method of claim 6, The control unit, And controlling the display unit to display the group information and the broadcast channel information belonging to the group according to the priority of the groups. Receiving a broadcast signal through a broadcast channel; And And determining a group to which the broadcast channel belongs based on a genre ratio of broadcast signals received in one broadcast channel, and automatically grouping a plurality of broadcast channels. The method of claim 10, The grouping step, And controlling a genre ratio of broadcast signals of the broadcast channel using the broadcast program information for the broadcast channel. The method of claim 10, The grouping step, In the genre of broadcast signals received on the one broadcast channel, if there is a genre that occupies a higher ratio than a predetermined threshold ratio, the genre is determined as a group to which the one broadcast channel belongs. Control method. The method of claim 10, The grouping step, When a plurality of genres occupying a ratio higher than a predetermined threshold ratio among genres of broadcast signals received in the one broadcast channel exist, the group to which the one broadcast channel belongs is determined as the plurality of genres, respectively. A control method of a broadcast receiving apparatus. The method of claim 10, The grouping step, If there is no genre that occupies a higher ratio than a preset threshold ratio among the genres of broadcast signals received in the one broadcast channel, the broadcast receiving device according to claim 1, wherein the one broadcast channel is determined to belong to an integrated channel. Control method. The method of claim 10, Storing group information and broadcast channel information belonging to the group; And And displaying the group information and the broadcast channel information belonging to the group. The method of claim 15, And updating at least one of the group information and the broadcast channel information belonging to the group by using the broadcast program information received during a preset period. The method of claim 15, Receiving a user command; And And performing channel switching between different groups or within the same group according to the user command. The method of claim 15, The display step, And displaying the group information and the broadcast channel information belonging to the group according to the priority of the groups.

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