KR20070052460A - Broadcast receiver and method for controlling output channels thereof - Google Patents

Abstract

The present invention relates to a broadcast receiving device such as a radio or television as a car or a portable device and a method of controlling the same. A channel information preparation step of preparing channel information that can be received by each broadcasting station for each divided region, and an adjacent region for each divided region. Neighboring area information preparation step of preparing neighboring area information for a current location detecting step of detecting a current location of the broadcast receiving device; an area to which a current location belongs based on the detected current location, the channel information, and the neighboring area information; And a channel extraction step of extracting a channel of a broadcasting station corresponding to a channel currently being output from among channel information available in an adjacent region, a reception sensitivity comparison step of comparing the reception sensitivity of the extracted channel with a reception sensitivity of a channel currently being output; An output channel control step of controlling a channel having good reception sensitivity as an output channel as a result of the comparison It has a configuration that includes, on the road, even automatically eliminates the inconvenience of the user by giving to connect the TV, such as the current broadcast, allowing you to watch, listen to the broadcast reception is always a good channel.

Broadcast, reception, channel, reception sensitivity, mobile broadcasting, television, radio

Description

Broadcast receiver and method for controlling channel {Broadcast receiver and method for controlling output channels about}

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

2 is a table showing coded neighboring region information by region,

3 is a table showing coded channel information of each television broadcasting station for each divided region;

4 is a table showing coded channel information of each radio station for each divided region;

5 is a flowchart illustrating a channel control method of a broadcast receiving device according to the present invention;

6 is a flowchart illustrating a modification of the output channel control method of the broadcast receiving device according to the present invention.

Explanation of symbols on the main parts of the drawings

100: broadcast receiving device 102: GPS module

104 control unit 106 first tuner

108: second tuner 114: broadcast signal switching unit

116: broadcast signal processing unit 118: first broadcast signal detection unit

120: second broadcast signal detection unit 126: memory unit

128: timer unit

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a broadcast receiving device applied to a radio, a television, or the like as an automobile or a portable device, and a method for controlling the output channel thereof. Particularly, the present broadcast and the radio broadcast are continuously watched without interruption while moving. The present invention relates to a broadcast receiving device and a method for controlling an output channel thereof, which enable listening.

Technological advances in the fields of electricity and electronics are progressing at an astonishing pace in the field of television and radio broadcasting. Therefore, in the broadcasting receivers used in personal portable and mobile vehicles, various functions are widely used to satisfy the needs of consumers. It is expanding. In particular, the most commonly used channel search function is used to scan the channels that can receive broadcasts and channels that do not, so that users can easily find only the channels that are on the air. .

However, even if the broadcast is accurately scanned and received, the receiving sensitivity decreases as the user moves away from the transmitting station, and the broadcasting of another channel output from another transmitting station may have better sensitivity. Of course, each time the user can use the search function to find out which channel is receiving better and select the channel to receive.However, the user can check which channel is receiving well and manually select the channel. You will feel uncomfortable.

In addition, when searching for channels having good reception sensitivity, the user of the broadcasting receiver must stop watching or listening to the channel that was being viewed or listened to. In addition, the user may not know in advance whether there is another channel with better reception sensitivity than when the channel is being output, and when to switch the channel. If the user feels that the channel being output is not good, he or she may look for another channel.

SUMMARY OF THE INVENTION An object of the present invention is to provide an output channel control method of a broadcast receiving device, which automatically selects a channel having a good reception sensitivity among channels that broadcast the same channel as the currently output channel according to its moving position. There is.

Another object of the present invention is to provide a broadcast receiving device that automatically selects a channel having good reception sensitivity as an output channel among channels that broadcast the same broadcast as a channel currently being output according to its movement position.

In a method for controlling an output channel in a broadcast receiving device according to the present invention, in the method for controlling an output channel in a broadcast receiving device, a channel information preparation step of preparing channel information that can be received by each broadcasting station for each divided region, and for each divided region The neighboring area information preparation step of preparing the neighboring area information for the neighboring area, the current position detecting step of detecting the current position of the broadcast receiving device, the current position is based on the detected current position and the channel information and the neighboring area information. A channel extraction step of extracting a channel of a broadcasting station corresponding to a channel currently being output among channel information that can be received in a region and a region adjacent thereto, and a reception sensitivity comparison comparing the reception sensitivity of the extracted channel with a reception sensitivity of a channel currently being output; An output channel control step of controlling a channel having a good reception sensitivity as an output channel It has a configuration that includes.

In a method for controlling an output channel in a broadcast receiving device according to the present invention, in the method for controlling an output channel in a broadcast receiving device, a channel information preparation step of preparing channel information that can be received by each broadcasting station for each divided region, and for each divided region Neighboring region information preparation step of preparing neighboring region information for the neighboring region, present position detecting step of detecting the current position of the broadcasting receiver, current position based on the detected current position, the channel information and the neighboring region information A channel extraction step of extracting channels of a broadcasting station corresponding to a channel currently being output among channel information that can be received in a region and a region adjacent thereto, a reception sensitivity comparison step of comparing the reception sensitivity of the extracted channels with each other, and the comparison result reception sensitivity Is configured to include an output channel control step of controlling the best channel as an output channel. It can be.

In the channel information preparation step, a reception channel code table for each region is prepared by displaying the channels of broadcast stations that can be received in a corresponding region for each coded and divided region.

In the neighboring area information preparation step, a neighboring area code table prepared by displaying the neighboring areas by coded and divided regions is prepared.

The channel extracting step reads a code of a region corresponding to the detected current position and a code of a region adjacent to the region from the neighboring region code table, and corresponds to the read code from the region-specific receiving channel code table. A channel corresponding to the broadcasting station of the channel being output may be extracted.

A plurality of channels are extracted in the channel extraction step,

In the reception sensitivity comparison step, the reception sensitivity of each of the extracted plurality of channels may be sequentially compared with the reception sensitivity of the output channel.

Preferably, the region neighboring region code table and the region receiving channel code table are updated through a wired or wireless network.

The broadcast receiving device according to the present invention includes a tuner for receiving a broadcast signal and a broadcast signal processor for processing a broadcast signal received through the tuner so that the broadcast signal can be output to a display or a speaker. A broadcast receiving device comprising: a GPS module for detecting a current position of the broadcast receiving device, a memory storing receivable channel information of each broadcasting station for each divided region, and neighboring region information for adjacent regions for each divided region; A first tuner for selecting and receiving broadcast signals of each broadcasting station for each channel, and a second tuner for selecting and receiving broadcast signals of each broadcasting station for each channel, and are received through the first tuner and the second tuner. A broadcast signal switching unit and the memo for selectively sending the broadcast signal to the broadcast signal processor Extracts channel information of a broadcasting station of a channel currently being broadcast from region information corresponding to the current location information and neighboring region information of the region information, and receives a sensitivity of the channel according to the extracted channel information and And a control means for comparing the reception sensitivity and controlling the operation of the broadcast signal switching unit according to the comparison result.

In some cases, the broadcast receiving device according to the present invention includes a tuner for receiving a broadcast signal and a broadcast signal processor for processing a broadcast signal received through the tuner so that the broadcast signal can be output to a display or a speaker while the broadcast signal is moved. In the broadcast receiving device for receiving and outputting a GPS module for detecting the current position of the broadcast receiving device, the channel information that can be received by each broadcasting station for each divided region and the neighboring region information for the adjacent region by the divided region A memory unit for storing the first tuner for selecting and receiving broadcast signals of each broadcasting station for each channel, a second tuner for selecting and receiving broadcast signals of each broadcasting station for each channel, the first tuner and the second tuner; Broadcast signal switching unit for selectively sending the broadcast signal received through the tuner to the broadcast signal processing unit Extracting channel information of a broadcasting station of a channel currently being broadcast from the region information corresponding to the current location information and neighboring region information of the region information from the memory unit, and comparing reception sensitivity of the channels according to the extracted channel information with each other; According to the comparison result may have a configuration including a control means for controlling the operation of the broadcast signal switching unit.

A first broadcast signal detector is provided between the first tuner and the controller to detect and apply a broadcast signal received by the first tuner to the controller, and is received by the second tuner between the second tuner and the controller. Preferably, a second broadcast signal detector is provided to detect a broadcast signal to be applied to the controller.

The memory unit may code and store the divided region information, the channel information that can be received by each broadcasting station for each divided region, and the neighboring region information for the adjacent region of the divided region.

The controller compares the reception sensitivity of the channel tuned by each tuner from the first tuner and the second tuner,

If the reception sensitivity of the broadcast signal of the other tuner is lower than the broadcast signal of the tuner used for the current broadcast output, the broadcast signal of the other channel is received by controlling the other tuner to compare the reception sensitivity with the tuner used for the current broadcast output. Repeat what you do,

If the reception sensitivity of the broadcast signal of the tuner other than that of the tuner used for the current broadcast output is good, the current position is repeated by repeating the operation of controlling the broadcast signal switching unit so that a new channel having good reception sensitivity is output to the broadcast signal processing unit. It is desirable to find the channel with the best reception sensitivity at.

The output channel control method of the broadcast receiving device and the apparatus according to the present invention as described above automatically detects the position of the broadcast receiving device, and based on the detected position has a good reception sensitivity with the same broadcast as the broadcast currently being received. Find a channel and automatically connect that channel to the output channel.

In order to achieve the above object, a broadcast receiving device such as a radio or television and an output channel control method thereof according to the present invention detect a current location of the broadcast receiving device such as a television and a radio, and apply the detected current location and the adjacent area code. Correspondingly, the channel information having the best reception sensitivity is determined by sequentially reading the receivable channel information for each broadcasting station, and sequentially comparing the broadcast signal tuned to the read broadcast channel with the broadcast signal used as the current output signal. Therefore, the output channel is reset so that the video signal and the audio signal having the best reception sensitivity can be output to the speaker and / or the display.

Determination of the channel change is preferably performed continuously in the power-on state in consideration of the movement of the receiving device.

When the location code corresponding to the current location is read, all the receivable channel information including the channel information of the neighboring neighboring area is read out based on the location information, and the channel that broadcasts the same content as the broadcast of the currently output channel is extracted. can do.

The reception sensitivity comparison may sequentially receive a stored broadcast channel using a tuner currently outputting a broadcast and a separate tuner, and compare the currently output broadcast with the reception sensitivity.

Regional channel information and neighboring area information are stored in a table form and can be updated through wired and wireless networks.

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

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

The broadcast receiving device 100 shown in FIG. 1 includes a Global Positioning System module 102. The GPS module 102 is for detecting the current position of the broadcast receiving device 100 that moves using the satellite. The GPS module 102 detects the current position of the broadcast receiving device 100 and applies the information to the control unit 104.

The broadcast receiving device 100 of FIG. 1 includes two tuners, a first tuner 106 and a second tuner 108. The first tuner 106 and the second tuner 108 are used to select and receive a broadcast signal of each broadcasting station from a broadcast signal received through the antennas 110 and 112 for each channel. The first tuner 106 and the second tuner 108 serve to selectively apply the received broadcast signal to the broadcast signal processing unit 116 via the broadcast signal switching unit 114.

Between the first tuner 106 and the controller 104, a first broadcast signal detector 118 that detects the broadcast signal of the first tuner 106 and applies it to the controller 104, the second tuner 108 and the controller. The second broadcast signal detection unit 120 is provided between the 104 to detect the broadcast signal of the second tuner 108 and to apply to the control unit 104.

That is, the first broadcast signal detector 118 and the second broadcast signal detector 120 generate a comparison signal for comparing and determining the reception sensitivity of the signal tuned by the controller 104 from each of the tuners 106 and 108. To the control unit 104.

The broadcast signal processing unit 116 processes the broadcast signal to be applied so that sound and a screen are output to the speaker 122 and the display 124. The broadcast signal switching unit 114 is controlled by the controller 104. Accordingly, the broadcast signal of the first tuner 106 and the broadcast signal of the second tuner 108 can be selectively applied to the broadcast signal processor 116. That is, the broadcast signal switching unit 114 selects one of the broadcast signals input through the two tuners based on the reception sensitivity determination of the control unit 104 and provides it to the broadcast signal processing unit 116.

The controller 104 is connected to a memory unit 126 and a timer unit 128. The timer unit 128 is for applying time information to the control unit 104.

The memory unit 126 is a portion in which channel information for each broadcasting station and region-specific neighboring region information according to the divided regions described later through FIGS. 2 to 4 are coded and stored in a table form. Of course, the memory unit 126 may be executed by the controller 104 such as channel information, neighbor area information, driver programs for controlling peripheral devices, and programs for comparing reception sensitivity of received broadcast signals. The program is saved. Here, the memory unit 126 may have a configuration including a main memory such as a RAM (RAM) in which a program to be executed in the controller 104 is loaded, and an auxiliary memory device such as a hard disk or a ROM. . In some cases, it may consist of only flash memory.

The controller 104 performs an existing known basic function such as controlling an operation of a peripheral device such as the broadcast signal processor 116 according to the loaded program. In addition, the control unit 104 receives the information on the current position from the GPS module 102, the first tuner 106 and the second tuner from the first broadcast signal detector 118 and the second broadcast signal detector 120 Receives a broadcast signal of 108 and reads the region code of the region to which the current location belongs and the region code of the region adjacent to the region from the memory unit 126, and can receive the received region codes from the read region codes. Extracting the channels of the broadcasting station that is currently output among the reception channels of the, and compares the reception sensitivity of the channel currently being output to the received sensitivity of the extracted channels sequentially and controls the broadcast signal switching unit 114 according to the comparison result.

The audio signal processor 130, the audio signal output unit 132, the speaker 122, the video signal processor 134, the video signal output unit 136, and the display 124 are connected to the broadcast signal processor 116. .

2 to 4 show information encoded and stored in the memory unit 126 described above, FIG. 2 is a table showing coded neighboring region information for each divided region, and FIG. 3 shows a receivable channel of each television broadcasting station for each divided region. Information coded table and FIG. 4 is a table showing coded channel information of each radio station for each divided region.

As shown in FIG. 2, a table indicating neighboring region information for each region is assigned to each region based on a transmission tower or a repeater. That is, in the case of Gwangjin-gu, an area code of “0004” is assigned, and Seongdong-gu (0005), Dongdaemun-gu (0007), Jungnang-gu (0008), Songpa-gu (0002), and Guri-si (1010) adjacent to Gwangjin-gu are designated.

Receivable channel information of each broadcasting station for each region, as shown in FIGS. 3 and 4, classifies all broadcasting stations currently operating on the basis of each region code, and shows a broadcasting channel for each broadcasting station.

That is, in the case of a television station, the "KBS 1 (01)" broadcast classified as 01 is stored as 09 channel, and the "KBS 2 (02)" broadcast classified as 02 is stored as 07 channel 03 in the area code of "0001". The classified "MBC (03)" broadcast is stored in 11 channels or the like.

The radio station is also stored in the same manner as the television station as shown in FIG.

Channel information and neighboring region information of each broadcasting station for each region stored in the memory unit 126 can be periodically updated through a wireless network, so that a change in an actual broadcasting station or broadcasting channel can be immediately reflected to a broadcasting receiver. It is desirable to have.

The operation of the broadcast receiving device 100 according to the present invention having the above configuration will be described below with reference to FIG. 5.

5 is a flowchart illustrating a channel control method in a broadcast receiving device according to the present invention.

First, as shown in the table of FIGS. 2 to 4, channel information for each broadcasting station and neighboring region information for each region are coded and stored in the memory unit 126 (step 1).

When powered on, the control unit 104 and the memory unit 126 are basically loaded with a program such as a driver program for controlling the operation of a peripheral device, a program necessary for processing a broadcast signal, and preferably a broadcast signal of a previously viewed channel. Is applied to the broadcast signal processor 116 and output to the speaker 122 and / or the display 124. In this state, the GPS module 102 detects the current position through the satellite and applies it to the controller 104 (step 2).

Then, the controller 104 reads the region code of the region to which the current location belongs and the region codes of the region adjacent to the region from the memory unit 126, and in each broadcaster-specific channel of the regions corresponding to the read region codes. A channel having the same broadcast as the broadcast currently being output is extracted (step 3).

Then, the controller 104 controls the operation of the second tuner 108 if a tuner that is not used for the current output, for example, the first tuner 106 is used as an output channel according to the extracted channels information. To receive the broadcast signal of the extracted channel. At this time, the first broadcast signal detector 118 detects and applies the broadcast signal of the first tuner 106 that is used as an output channel to the controller 104, and the second broadcast signal detector 120 transmits the second tuner. The broadcast signal of 108 is detected and applied to the control unit 104. Accordingly, the controller 104 compares the reception sensitivity of the broadcast signal of the channel currently being output from the first tuner 106 with the reception sensitivity of the broadcast signal of the extracted channel applied from the second tuner 108 (step 4).

As a result of the comparison, if the reception sensitivity of the currently output channel is smaller than the reception sensitivity of the extracted channel, the controller 104 controls the broadcast signal switching unit 114 to switch channels so that the extracted channel having high reception sensitivity can be an output channel. (Step 5). Accordingly, the broadcast signal processor 116 processes the broadcast signal of the extraction channel applied from the second tuner 108 to be output to the speaker 122 and / or the display 124. As a result of the comparison, if the reception sensitivity of the currently output channel is greater than the reception sensitivity of the extracted channel, the controller 104 leaves the broadcast signal switching unit 114 as it is so as to maintain the current output channel as an output channel.

If there are several extracted channels, step 4 is sequentially performed for each extracted channel, and it is determined whether step 4 has been completed for all extracted channels (step 6), and the process returns to step 2.

On the other hand, the broadcast signal processing unit 116 processes the applied broadcast signal to be output to the speaker 122 and / or display 124 and ends (step 7).

Channel information and neighboring area information may be periodically updated through a network as a service provided by a broadcasting receiver or other service company (step 8).

That is, the broadcast receiving device according to the present invention receives and outputs a broadcast signal of a channel having the best reception sensitivity at that position according to the moving position of the broadcast receiving device.

6 is a flowchart illustrating a modification of the output channel control method in the broadcast receiving device according to the present invention.

In Fig. 6, steps 11 to 13 are the same as steps 1 to 3 described above.

As a result of performing step 13, if channels that broadcast the same content as that of the currently output channel are extracted, a tuner that is not currently used as an output channel, for example, if the second tuner 108 is currently used as a currently output channel, The controller 104 sequentially controls the first tuner 106 in the state of the extraction channel so as to receive broadcast signals for each extraction channel, and controls the broadcast signals detected through the first broadcast signal detector 118. The reception sensitivity is compared with each other (step 14).

When the reception sensitivity comparison with respect to the entire extracted channel is completed (step 15), the controller 104 adjusts the channel of the first tuner 106 to the channel having the best reception sensitivity, and the broadcast scene hose switching unit 114. Control to connect the first tuner 106 to the broadcast signal processor 116 (step 16).

On the other hand, if the comparison of all extracted channels is completed as a result of the determination of step 15, the process returns to step 12 and repeats steps 12-15. Of course, the repetition period of steps 12-15 can be adjusted.

On the other hand, the channel information and the neighboring area information may be periodically updated through a network as a service provided by a broadcast receiving device sales company or other service company (step 17).

In this case, the broadcast receiver always outputs the broadcast on the channel having the best reception sensitivity.

The present invention described above automatically detects the position of a broadcast receiving device such as a radio or television in motion, searches for a broadcast channel corresponding to the detected position, and automatically receives a channel having the highest reception sensitivity as a broadcast currently being received. This change eliminates the inconvenience that the user has to search for another channel whenever the reception sensitivity of the broadcast decreases.

The present invention automatically detects the positions of radio and television broadcast receivers using GPS, extracts broadcasts such as current broadcasts from stored broadcast channels corresponding to the detected positions, and broadcasts such as current broadcasts while moving. It automatically connects channels with better reception sensitivity than the channel currently being output, eliminating user's inconvenience, and makes it possible to always watch and listen to broadcasts of channels with good reception sensitivity.

Claims (10)

In the output channel control method in a broadcast receiving device, A channel information preparation step of preparing receivable channel information of each broadcasting station for each divided region; Neighboring region information preparation step of preparing neighboring region information for the neighboring region for each of the divided regions; A current position detecting step of detecting a current position of the broadcast receiving device; A channel extracting step of extracting a channel of a broadcasting station corresponding to a channel currently being output among channel information available in the region to which the current position belongs and the region adjacent thereto based on the detected current position, the channel information, and the neighbor region information; A reception sensitivity comparing step of comparing the reception sensitivity of the extracted channel with the reception sensitivity of a channel currently being output; And And an output channel control step of controlling a channel having a good reception sensitivity as an output channel as a result of the comparison. In the output channel control method in a broadcast receiving device, A channel information preparation step of preparing receivable channel information of each broadcasting station for each divided region; Neighboring region information preparation step of preparing neighboring region information for the neighboring region for each of the divided regions; A current position detecting step of detecting a current position of the broadcast receiving device; A channel extracting step of extracting channels of a broadcasting station corresponding to a channel currently being output among channel information available in the region to which the current position belongs and the region adjacent thereto based on the detected current position, the channel information, and the neighbor region information; A reception sensitivity comparing step of comparing the reception sensitivity of the extracted channels with each other; And And an output channel control step of controlling the channel having the best reception sensitivity as an output channel as a result of the comparison. The reception channel code table according to claim 1 or 2, wherein in the channel information preparation step, channels of broadcast stations that can be received in a corresponding area for each coded area are coded and displayed. In the neighboring area information preparation step, a neighboring area code table prepared by displaying the neighboring areas by coded and divided regions is prepared. The channel extracting step reads a code of a region corresponding to the detected current position and a code of a region adjacent to the region from the neighboring region code table, and corresponds to the read code from the region-specific receiving channel code table. And a channel corresponding to a broadcasting station of a channel being output. The method of claim 1, wherein a plurality of channels are extracted in the channel extraction step, In the reception sensitivity comparison step, the reception sensitivity of each of the extracted plurality of channels is sequentially compared with the reception sensitivity of the channel being output. 4. The method of claim 3, wherein the neighboring region code table for each region and the receiving channel code table for each region are updated through a wired or wireless network. In the broadcast receiving device for receiving and outputting a broadcast signal while moving with a tuner for receiving a broadcast signal and a broadcast signal processing unit for processing the broadcast signal received through the tuner to be output to the display or speaker, A GPS module which detects a current position of the broadcast receiving device; A memory unit for storing receivable channel information of each broadcasting station for each divided region and neighboring region information for neighboring regions for each divided region; A first tuner for selecting and receiving broadcast signals of the broadcasting stations for each channel; A second tuner for selecting and receiving broadcast signals of the broadcasting stations for each channel; A broadcast signal switching unit for selectively sending broadcast signals received through the first tuner and the second tuner to the broadcast signal processor; And The channel information of the broadcasting station of the channel currently being broadcast is extracted from the memory unit from the region information corresponding to the current location information and the neighboring region information of the region information, and the reception sensitivity of the channel according to the extracted channel information and the current And control means for comparing reception sensitivity of a channel being broadcast and controlling the operation of the broadcast signal switching unit according to the comparison result. In the broadcast receiving device for receiving and outputting a broadcast signal while moving with a tuner for receiving a broadcast signal and a broadcast signal processing unit for processing the broadcast signal received through the tuner to be output to the display or speaker, A GPS module which detects a current position of the broadcast receiving device; A memory unit for storing receivable channel information of each broadcasting station for each divided region and neighboring region information for neighboring regions for each divided region; A first tuner for selecting and receiving broadcast signals of the broadcasting stations for each channel; A second tuner for selecting and receiving broadcast signals of the broadcasting stations for each channel; A broadcast signal switching unit for selectively sending broadcast signals received through the first tuner and the second tuner to the broadcast signal processor; And Extracting channel information of a broadcasting station of a channel currently being broadcast from the region information corresponding to the current location information and neighboring region information of the region information from the memory unit, and comparing reception sensitivity of the channels according to the extracted channel information with each other; And control means for controlling the operation of the broadcast signal switching unit according to the comparison result. 8. The apparatus of claim 6, wherein a first broadcast signal detector is provided between the first tuner and the controller to detect and apply a broadcast signal received by the first tuner to the controller. And a second broadcast signal detector configured to detect a broadcast signal received by the second tuner and apply it to the controller. The method according to claim 6 or 7, The memory unit, characterized in that the divided region information, the channel information that can be received by each broadcasting station for each divided region and the adjacent region information for the adjacent region by the divided region is coded and stored. The method of claim 6 or 7, wherein the control unit compares the reception sensitivity of the channel tuned by each tuner from the first tuner and the second tuner, If the reception sensitivity of the broadcast signal of the other tuner is lower than the broadcast signal of the tuner used for the current broadcast output, the broadcast signal of the other channel is received by controlling the other tuner to compare the reception sensitivity with the tuner used for the current broadcast output. Repeat what you do, If the reception sensitivity of a broadcast signal of another tuner is better than the broadcast signal of the tuner used for the current broadcast output, the current position is repeated by repeating the operation of controlling the broadcast signal switching unit so that a new channel having good reception sensitivity is output to the broadcast signal processor. Broadcast receiving device, characterized in that to find the channel with the best reception sensitivity.

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