JP2003198396A - Digital broadcast receiver and digital broadcast receiving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user cannot continue to watch a program to the end with a conventional digital broadcast receiver if there is radio disturbance. <P>SOLUTION: This digital broadcast receiver is provided with a first broadcast receiving means for receiving a first broadcast transmitted in a selected first transmission mode, a broadcast reception detecting means for detecting a receiving state of the received first broadcast, and a broadcast reception switching means for switching the reception to a second transmission mode in which the multiple broadcast is executed for the first broadcast if it is found that the receiving state of the first broadcast is poor. If it is found that the receiver fails to receive the broadcast transmitted in the first mode, the reception is switched to the broadcast in the second transmission mode in which the multiple broadcast is executed to continue the broadcast reception. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving apparatus and a digital broadcast receiving method, and more particularly to an invention utilizing multi-broadcast.

[0002]

2. Description of the Related Art At present, multi-broadcasting is carried out in sports programs, music programs, parliamentary broadcasts and the like.

The multi-broadcast is one of the broadcasts from a broadcasting station, and a plurality of broadcast distribution media (net distribution, terrestrial / radio distribution, satellite distribution, etc.) for the same program at almost the same time.
Is a broadcast that is broadcast using. At present, these satellite distribution broadcasts, net distribution broadcasts, and terrestrial / radio distribution broadcasts are independently connected to a digital broadcast receiving device.

Therefore, which distribution medium is used to view the program in this multi-broadcast is left to the preference of the viewer.

When watching a program by satellite broadcasting, for example, the antenna level is lowered due to bad weather,
You may not be able to watch it for a while. While watching a pay broadcast program, instead of being charged the viewing fee for the viewing time, there is a service that either exempts the viewing fee of the repeat broadcast or does not charge the viewing fee. The dissatisfaction of the viewers has been alleviated. But,
For programs where the progress of the program (live etc.) is important, such as sports relay games, even if repeat broadcasting is seen after the broadcast is interrupted, there is no real sense of presence, so even if you are watching it. There was a problem that it was not interesting.

Also, when a program is viewed by terrestrial / wireless distribution, it depends on the location conditions of the antenna, so it is susceptible to ghosts, noise, and noise, and it is possible to always watch the most unmissable scene. There is no guarantee. It is possible that the antenna may collapse due to weather conditions.

[0007] Furthermore, when a program is viewed by online distribution, the program cannot be viewed halfway due to a malfunction of the server that is doing the online distribution, or a large number of viewers are on the server before the program starts. There was a problem that you could not watch the program from the beginning depending on the connection capacity of the server.

Therefore, as described above, satellite distribution broadcasting, net distribution broadcasting, and terrestrial / radio distribution broadcasting are independently connected to the digital broadcasting receiving apparatus, and even if multi broadcasting is broadcast, Of other broadcast formats,
If the contents of the multi-broadcast could not be known and there was a reception failure, the program could not be continuously watched to the end.

[0009]

In the conventional broadcast receiving apparatus, even if multi-broadcast is broadcast, it is not possible to know the broadcast contents in other broadcast forms, and if there is a reception failure, it still remains. , There was a problem that you can not watch the program continuously until the end.

Further, for example, Japanese Patent Laid-Open No. 2001-21112.
No. 6 discloses a technique of transmitting information including whether or not the same broadcast is broadcast by analog and digital broadcasting by simulcast in program information, and the receiving device receives this and stores it in a memory. There is. However,
This simply switches the reception from the digital broadcast to the analog broadcast, and it is impossible to switch the reception from the digital broadcast to another digital broadcast by using the multi-broadcast.

The present invention solves the above problems, and when multi-broadcasting is used, if there is a reception failure in the broadcast being viewed,
The purpose of the present invention is to switch and receive other broadcast formats to enable stable broadcast viewing.

[0012]

A digital broadcast receiving apparatus according to the present invention includes first broadcast receiving means for receiving a first broadcast transmitted in a selected first transmission mode, and the received first broadcast receiving means. Broadcast reception detecting means for detecting a reception state of the first broadcast, and a second broadcast in which a multi-broadcast is being performed for the first broadcast when the reception state of the first broadcast is detected to be poor. Broadcast reception switching means for switching to reception of the second broadcast transmitted in the transmission mode, and multi-broadcasting is performed when reception of the broadcast transmitted in the first transmission mode is detected to be defective. It is configured to switch to the broadcast broadcast in the two transmission modes and receive the broadcast.

The digital broadcast receiving method according to the present invention includes a multi-broadcast detecting step of detecting a multi-broadcast of a program broadcast in a plurality of broadcasts having different transmission modes, and a first transmission mode selected. A first broadcast receiving step of receiving the transmitted first broadcast; a first reception detecting step of detecting a receiving state of the first broadcast; and a first receiving detecting step of detecting a receiving state of the first broadcast. A second broadcast receiving step of warning the poor reception of the first broadcast when it is determined that the first broadcast is poorly received, and receiving the second broadcast transmitted in the second transmission mode. I am configuring.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing program distribution by multi-broadcasting according to the present invention.

Reference numeral 30 is a broadcasting station that broadcasts (distributes) a program to viewers.

Reference numeral 21 is a satellite broadcasting transmitting station, reference numeral 22 is a broadcasting satellite, and reference numeral 23 is a satellite broadcasting receiving antenna. The broadcast program distributed from the broadcasting station 30 is transmitted from a satellite broadcasting transmitting station 21 installed on the ground to a broadcasting satellite 22 in the sky for satellite distribution of the program. The broadcast satellite 22 receives this program broadcast and again receives the satellite broadcast receiving antenna 23 on the ground.
The satellite broadcast receiving antenna 23 receives this broadcast program.

Reference numeral 24 is a terrestrial / radio broadcast transmitting station, and reference numeral 25 is a terrestrial / radio broadcast receiving antenna. Broadcasting station 3
The broadcast program distributed from 0 is transmitted to the satellite broadcasting transmitting station 21, and is broadcast from the satellite broadcasting transmitting station 21 by terrestrial / radio broadcasting. This broadcast program is received by the terrestrial / radio broadcast receiving antenna 25.

Reference numeral 26 is an online distribution broadcasting transmitting station.
The broadcast program distributed from the broadcasting station 30 is transmitted to the net distribution broadcasting transmitting station 26 and distributed via a cable such as a telephone line.

Reference numeral 10 is a digital broadcast receiver (digital tuner). Reference numeral 11 is a display that is connected to the digital broadcast receiving apparatus 10 and outputs an image.
The digital broadcast receiving apparatus 10 is connected to the satellite broadcast receiving antenna 23, the terrestrial / radio broadcast receiving antenna 25, and the net distribution broadcast transmitting station 26, respectively, and the satellite broadcast receiving antenna 23 and the terrestrial / radio broadcast receiving antenna are connected. 25 and the Internet distribution broadcasting transmitting station 26 are in a multi-connection relationship so that they can receive multi-broadcasting. Then, the broadcasting station 30 is performing multi-broadcasting.

The broadcasting station 30 uses the three distribution means as described above to perform multi-broadcast program distribution. It is desirable that the digital broadcast receiving apparatus 10 be configured to be receivable by the above three distribution means.

The satellite distribution is transmitted from a satellite transmitting antenna (satellite broadcasting transmitting station 21) via a satellite repeater (broadcasting satellite 22), received by a satellite receiving antenna 23 and received by a digital broadcasting receiving apparatus 10. In addition, the terrestrial / radio distribution is performed by the terrestrial / radio transmission antenna (terrestrial / radio transmission station 2
The broadcast wave is output from 4), is received by the terrestrial / radio receiving antenna 25, and is received by the digital broadcast receiving apparatus 10. In addition, online distribution is performed by a server (Internet transmission station 2
6) is transmitted via the telephone line and received by the digital broadcast receiving apparatus 10.

In the embodiment of the present invention, a plurality of broadcasts having different transmission modes as described above (broadcasting by other distribution means) are performed before the time when a specific program desired by the viewer is broadcast. It is desirable to detect in advance the multi-broadcast of the program to be broadcast at. Then, information about whether or not there is a broadcast by another distribution means is acquired in advance.

A CPU (not shown) is provided in the digital broadcast receiving apparatus 10, and the satellite broadcast received by the satellite receiving antenna 23, the terrestrial / radio transmitting broadcast received by the terrestrial / radio receiving antenna 25, the server. The net distribution broadcast transmitted from the (net transmission station 26) is connected to this CPU.

The above-mentioned satellite broadcasting, terrestrial / radio transmission broadcasting, and net distribution broadcasting are digital broadcasting.
Program information used in a PG (Electrical Programmable Guide) or the like is also transmitted. Then, as one of the program information, advance notice information on the multi-broadcast is also transmitted in each broadcast.

In the digital broadcast receiver 10, the CPU is
It controls the process of acquiring advance notice information about multi-broadcast from satellite broadcasting, terrestrial / radio transmission broadcasting, and net distribution broadcasting. Further, the CPU has a memory (not shown),
The notice information on the acquired multi-broadcast is recorded in this memory. Under the control of the CPU, the digital broadcast receiving apparatus 10 uses the advance notice information about the multi-broadcast recorded in the memory to execute the process according to the embodiment of the present invention.

Here, the acquisition of advance notice information about multi-broadcast will be described.

First, the viewer selects a broadcasting form desired to be received from the above-mentioned satellite broadcasting, terrestrial / radio transmission broadcasting, and net distribution broadcasting. Note that it is not necessary to successively select this broadcast mode, and the broadcast mode selected when the power of the digital broadcast receiving apparatus 10 is turned off is stored, and this is automatically selected when the power is turned on. The automatic selection is also an embodiment of the present invention in selecting the broadcast mode.

Further, when the broadcast is received by the Internet distribution, the information regarding the presence or absence of the broadcast by another distribution means may be superimposed on the video data (program). Further, when the broadcast is received by terrestrial / wireless distribution and satellite distribution, the presence / absence information of other distribution means may be superimposed on the EPG information.

Then, using the above information, when the broadcast of the program is being viewed, the information of other delivery means is acquired,
Switch to another distribution method. That is, when the viewer is watching the content via the Internet, the terrestrial / radio and satellite that are distributing the underlying program are selected. In the case of viewing by terrestrial / wireless distribution, the satellite that is distributing the underlying program is selected and connected to the Internet to connect to the site that is distributing the certain program. When viewing by satellite distribution, the operation of selecting the terrestrial / radio channel that is delivering the underlying program, connecting to the Internet, and connecting to the site delivering the certain program It is possible to That is, a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms is detected in advance.

While receiving the selected broadcast, the digital broadcast receiving apparatus 10 simultaneously detects the broadcast reception state. Here, the received broadcast and the predetermined reception standard are compared and judged, and if the reception of the broadcast that does not meet the reception standard is detected, it is judged that the reception is poor. This determination is similarly performed regardless of whether the satellite broadcast, the terrestrial / radio transmission broadcast, or the net distribution broadcast is received.

When it is determined that the reception is poor on the basis of the reception state detection, the poor reception of this broadcast is warned, and the switching reception is performed so as to receive the multi-broadcast transmitted in another transmission mode. When the reception failure is recovered, the transmission mode selected first may be selected. These processes are controlled and executed by the CPU in the digital broadcast receiving apparatus 10.

Next, the processing executed by the digital broadcast receiving apparatus 10 will be described.

FIG. 2 is a flow chart showing the state of broadcast reception when the net distribution according to the present invention is selected.

Reference numeral 101 is a step in which the online distribution broadcast reception is selected as described above. Then, the process proceeds to the step indicated by reference numeral 102.

Step 102 is a step of detecting a poor reception of the broadcast (in this case, a reception failure of the net distribution broadcast). If the detection is performed as described above and it is determined that the reception is poor, in order to switch the reception to the broadcast of another transmission form,
The process proceeds to the step denoted by reference numeral 103 (Yes). If it is not determined that the reception is poor, the process proceeds to the step denoted by reference numeral 106 (No).

In step 106, since it is not judged that the reception is bad, the online distribution broadcast reception is maintained.

Step 103 is a step of detecting whether or not multi-broadcasting is being performed by ground wave or radio broadcasting. When multi-broadcasting is being performed by terrestrial or wireless broadcasting, the process proceeds to the step denoted by reference numeral 107 (Ye
s). If multi-broadcasting is not being performed by terrestrial or wireless broadcasting, the process proceeds to the step denoted by reference numeral 104 (N
o).

At step 107, since multi-broadcasting is being performed by terrestrial waves or wireless broadcasting, switching reception to terrestrial waves or wireless broadcasting is performed. Code 1 after a predetermined time
Go to the step marked with 09.

Step 104 is a step of detecting whether or not multi-broadcasting is being performed by satellite broadcasting. If multi-satellite broadcasting is being performed, the process proceeds to the step denoted by reference numeral 108 (Yes). When the multi-broadcast is not performed by satellite broadcasting, the process proceeds to the step denoted by reference numeral 105 (No).

In step 105, since the satellite broadcast is not used for multi-broadcasting, a warning such as "Internet distribution failure is occurring" is displayed on the display 11.

At step 108, since the multi-broadcast is being carried out by the satellite broadcasting, the switching reception to the satellite broadcasting is carried out. Then, the process proceeds to the step indicated by reference numeral 109.

In step 109, the recovery of the poor reception of the broadcast (in this case, the reception failure of the online distribution broadcast) is checked after the lapse of a predetermined time. Then, it proceeds to the step indicated by reference numeral 110.

In step 110, it is judged whether the reception of the poor reception of the broadcast (in this case, the reception failure of the internet distribution broadcast) is recovered. If the poor reception is not recovered, the process proceeds to the step denoted by reference numeral 109 (No), and the above process is re-executed.
When the poor reception is recovered, the process proceeds to the step denoted by reference numeral 110.

At step 111, the reception is switched to the initially selected broadcast reception (in this case, the net distribution broadcast), and the processing here is completed.

In the embodiment of the present invention, when the video of the Internet distribution is selectively received, it is determined that the video of the Internet distribution cannot be pulled into the digital tuner due to a malfunction of the server on the broadcast station side. If it does, the video output is switched to terrestrial / wireless distribution or satellite distribution. After that, a check is made after a predetermined time (at a constant time interval) to check whether or not the video has been recovered so that it can be pulled in from the Internet distribution. Then, a recovery check process is performed, and when it is determined that the reception failure is recovered, a process for switching the video output to the initially selected online distribution is performed again.

FIG. 3 is a flow chart for explaining the state of broadcast reception when the terrestrial wave distribution or the wireless distribution according to the present invention is selected.

Reference numeral 201 is a step in which the reception of the terrestrial wave or the wireless distribution broadcast is selected as described above. Then, the process proceeds to the step indicated by reference numeral 202.

Step 202 is a step of detecting a poor reception of the broadcast (in this case, a reception failure of the terrestrial wave or the wireless distribution broadcast). When the detection is performed as described above and it is determined that the reception is poor, the process proceeds to the step denoted by reference numeral 203 in order to switch the reception to the broadcast of another transmission form (Yes.
s). If it is not determined that the reception is poor, the process proceeds to the step labeled 206 (No).

Since it is not judged that the reception is poor in step 206, the reception of the terrestrial wave or the wireless distribution broadcast is maintained.

Step 203 is a step of detecting whether or not multi-broadcasting is being carried out in the net distribution broadcasting. Code 2 when multi-broadcasting is being performed on the Internet.
Proceed to the step marked with 07 (Yes). When the multi-broadcast is not being performed in the net distribution broadcasting, the process proceeds to the step indicated by reference numeral 204 (No).

At step 207, since the multi-broadcast is being carried out by the net distribution broadcast, the switching reception to the net distribution broadcasting is carried out. After the elapse of the predetermined time, the process proceeds to the step labeled 209.

Step 204 is a step of detecting whether or not multi-broadcasting is being performed by satellite broadcasting. If the multi-broadcast is being performed by satellite broadcasting, the process proceeds to the step denoted by reference numeral 208 (Yes). If multi-broadcasting is not being performed by satellite broadcasting, the process proceeds to the step designated by reference numeral 205 (No).

In step 205, since the satellite broadcasting is not used for multi-broadcasting, a warning such as "A terrestrial / radio distribution reception failure is occurring" is displayed on the display 11.

At step 208, since the multi-broadcast is being carried out by satellite broadcasting, switching reception to satellite broadcasting is carried out. Then, the process proceeds to the step indicated by reference numeral 209.

In step 209, the recovery of the poor reception of the broadcast (in this case, the reception failure of the terrestrial / radio distribution broadcast) is checked after the lapse of a predetermined time. Then, the process proceeds to the step indicated by reference numeral 210.

In step 210, it is judged whether the reception from the poor reception of the broadcast (in this case, the reception failure of the terrestrial / radio distribution broadcast) is recovered. If the poor reception is not recovered, reference numeral 209
The process proceeds to the step marked with (No), and the above process is re-executed. When the poor reception is recovered, the process proceeds to the step indicated by reference numeral 210.

In step 211, the reception is switched to the initially selected broadcast reception (in this case, terrestrial / radio distribution broadcast), and the processing here is completed.

In the embodiment of the present invention, when the image of the terrestrial / wireless distribution is selectively received, the location condition of the receiving antenna is bad and the terrestrial / wireless distribution is affected by the influence of ghost, noise and noise. Video digital broadcasting receiver 1
When it is determined that the video output cannot be pulled to 0, the video output is switched to the net distribution or the satellite distribution. After that, a check is performed for a predetermined time (constant time interval) to check whether the video has been recovered from the terrestrial / wireless distribution. Then, a recovery check process is performed, and when it is determined that the recovery has been performed, a process of switching and receiving the video output again to terrestrial / wireless distribution is performed.

FIG. 4 is a flow chart for explaining how to receive the broadcast when the satellite distribution according to the present invention is selected.

Reference numeral 301 is a step in which satellite distribution broadcast reception is selected as described above. Then, the process proceeds to the step indicated by reference numeral 302.

Step 302 is a step of detecting a poor reception of the broadcast (in this case, a reception failure of the satellite distribution broadcast). When the detection is performed as described above and it is determined that the reception is poor, the process proceeds to the step denoted by reference numeral 303 to switch the reception to the broadcast of another transmission form (Yes). If it is not determined that the reception is poor, the process proceeds to the step indicated by reference numeral 306 (No).

In step 306, since it is not judged that the reception is bad, the satellite distribution broadcast reception is maintained.

Step 303 is a step of detecting whether or not multi-broadcasting is being carried out in the net distribution broadcasting. Code 3 when multi-broadcasting is being carried out on the Internet.
Proceed to the step marked with 07 (Yes). When the multi-broadcast is not being performed in the net distribution broadcast, the process proceeds to the step indicated by reference numeral 304 (No).

At step 307, since the multi-broadcast is being carried out by the net distribution broadcast, the switching reception to the net distribution broadcast is carried out. After the lapse of a predetermined time, the process proceeds to the step indicated by reference numeral 309.

Step 304 is a step of detecting whether or not multi-broadcasting is being performed by terrestrial / radio broadcasting. If multi-broadcasting is being performed by terrestrial / radio broadcasting, the process proceeds to the step denoted by reference numeral 308 (Yes). Terrestrial /
Reference numeral 30 if multi-broadcasting is not performed in wireless broadcasting
Proceed to the step marked with 5 (No).

In step 305, since multi-broadcasting is not performed even in terrestrial / radio broadcasting, a warning such as "satellite distribution reception failure is occurring" is displayed on the display 11.

At step 308, since multi-broadcasting is being performed by terrestrial / radio broadcasting, switching reception to terrestrial / radio broadcasting is performed. Then, the process proceeds to the step indicated by reference numeral 309.

In step 309, the recovery of the poor reception of the broadcast (in this case, the reception failure of the satellite distribution broadcast) is checked after the lapse of a predetermined time. Then, it proceeds to the step indicated by reference numeral 310.

In step 310, it is judged whether the reception of the poor reception of the broadcast (in this case, the reception failure of the satellite distribution broadcast) is recovered. If the poor reception is not recovered, the process proceeds to the step denoted by reference numeral 309 (No), and the above process is re-executed.
When the poor reception is recovered, the process proceeds to the step indicated by reference numeral 310.

In step 311, the reception is switched to the initially selected broadcast reception (in this case, satellite distribution broadcast),
The process here ends.

In the embodiment of the present invention, when the satellite-distributed image is selectively received, it is determined that the satellite-distributed image cannot be pulled into the digital broadcast receiving apparatus 10 due to the influence of weather or the like. In this case, the video output is switched to the Internet distribution or the terrestrial / wireless distribution and received.
After that, it is checked whether or not the image has been recovered from the satellite distribution so that the image can be pulled in after a predetermined time has passed (at a constant time interval). Then, a recovery check process is performed, and when it is determined that the recovery has been performed, the video output is switched to the satellite distribution again.

In the embodiment of the present invention, the multi-broadcast is used as described above. And the broadcasting station 30
A plurality of different transmission media broadcast from is used, and information such as the presence or absence of other transmission media is transmitted. The digital broadcast receiving device 10 can receive broadcasts from a plurality of media connected to the broadcast station 30. The viewer can select the desired transmission medium and receive the broadcast. In the selected receiving medium, when the viewing becomes difficult due to a network failure or a receiving failure, the video is switched to another receiving medium. Then, while the image of the other receiving medium is shown to the viewer, whether or not the internet failure or the receiving failure of the receiving medium initially selected by the viewer is recovered is monitored at regular intervals. Then, when it is determined that the internet failure or the reception failure has been recovered, the video is switched again to the video of the receiving medium that the viewer first selected. By incorporating such a method,
Regardless of which reception medium is selected by the viewer, a certain program can be continuously viewed from the beginning to the end.

[0074]

According to the present invention, with the above-described configuration, when the reception state of the broadcast being viewed is poor, the broadcast reception is performed in another transmission mode in which the multi-broadcast is being performed. It can be switched and received automatically. Therefore, even in the case of poor broadcast reception, seamless broadcast reception switching can be realized.

[Brief description of drawings]

FIG. 1 is a diagram showing program distribution by multi-broadcasting according to the present invention.

FIG. 2 is a flowchart showing how to receive a broadcast when Internet distribution according to the present invention is selected.

FIG. 3 is a flowchart for explaining how to receive a broadcast when terrestrial distribution or wireless distribution according to the present invention is selected.

FIG. 4 is a flowchart for explaining how to receive a broadcast when satellite distribution according to the present invention is selected.

[Explanation of symbols]

10 ... Digital broadcasting receiver 12 ... Display 21… Satellite Broadcasting Station 22… Broadcast satellite 23… Satellite dish 24… Terrestrial / wireless broadcasting station 25 ... Terrestrial / radio broadcast receiving antenna 26… Internet broadcasting station 30… Broadcasting station

Claims (10)

[Claims] 1. A digital broadcast receiving apparatus for receiving a plurality of broadcasts having different transmission modes, first broadcast receiving means for receiving the first broadcast transmitted in the selected first transmission mode, and the reception. Broadcast reception detecting means for detecting a reception state of the first broadcast, and when the reception state of the first broadcast is detected to be defective,
Broadcast reception switching means for switching to reception of the second broadcast transmitted in the second transmission mode in which the multi-broadcast is performed for the first broadcast, and the broadcast reception switching means for switching the reception of the broadcast transmitted in the first transmission mode. A digital broadcast receiving apparatus characterized in that, when reception is detected to be poor, the broadcast is received by switching to a broadcast that is broadcast in a second transmission mode in which multi-broadcasting is performed. 2. A digital broadcast receiving apparatus for receiving a plurality of broadcasts having different transmission forms, and a multi-broadcast detecting means for previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms, and a selected first broadcast. First broadcast receiving means for receiving the first broadcast transmitted in one transmission form, broadcast reception detecting means for detecting a reception state of the received first broadcast, and reception of the first broadcast If the condition is detected as bad,
Broadcast reception switching means for switching to reception of a second broadcast transmitted in a second transmission mode in which the multi-broadcast is performed with respect to the first broadcast using the detected multi-broadcast, If the reception of the broadcast transmitted in the first transmission mode is detected to be poor, the multi-broadcast is performed, and the broadcast is switched to the broadcast transmitted in the second transmission mode to perform the broadcast reception. Receiver. 3. A digital broadcast receiving method for receiving a plurality of broadcasts having different transmission forms, the step of selecting a first broadcast to be transmitted in a first transmission form from a plurality of broadcasts having different transmission forms. A first broadcast receiving step of receiving the selected first broadcast, a broadcast reception detecting step of detecting a receiving state of the received first broadcast, and a poor receiving state of the first broadcast. Is detected,
A broadcast reception switching step of switching to reception of a second broadcast transmitted in a second transmission mode in which multi-broadcasting is performed with respect to the first broadcast. A method of receiving a digital broadcast, characterized in that, when the reception is detected to be poor, the broadcast is received by switching to a broadcast that is broadcast in the second transmission mode in which the multi-broadcast is being performed. 4. A method of receiving a digital broadcast for receiving a plurality of broadcasts having different transmission forms, the multi-broadcast detecting step of previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms, A step of selecting a first broadcast transmitted in a first transmission form from a plurality of different broadcasts; and a first broadcast reception for receiving the first broadcast transmitted in the selected first transmission form A broadcast reception detecting step of detecting a reception state of the received first broadcast; and a case where the reception state of the first broadcast is detected to be poor,
A broadcast reception switching step of switching to reception of a second broadcast transmitted in a second transmission mode in which the multi-broadcast is performed with respect to the first broadcast using the detected multi-broadcast; When the reception of the broadcast transmitted in the first transmission mode is detected to be poor, the multi-broadcast is performed, and the broadcast is switched to the broadcast transmitted in the second transmission mode to perform the broadcast reception. How to receive. 5. A digital broadcast receiving method for receiving a plurality of broadcasts having different transmission forms, a multi-broadcast detecting step of previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms. A first broadcast receiving step of receiving a first broadcast transmitted in a first transmission mode; a first reception detecting step of detecting a reception state of the first broadcast; and a reception of the first broadcast. When it is determined that the first broadcast is poorly received based on the state detection, the poor reception of the first broadcast is warned, and the second broadcast received in the second transmission mode is received. A method for receiving digital broadcasting, comprising: 6. A digital broadcast receiving method for receiving a plurality of broadcasts having different transmission forms, a multi-broadcast detecting step of previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms, A first broadcast receiving step of receiving a first broadcast transmitted in a first transmission mode; a first reception detecting step of detecting a reception state of the first broadcast; and a reception of the first broadcast. When it is determined that the first broadcast is poorly received based on the state detection, the poor reception of the first broadcast is warned, and the second broadcast received in the second transmission mode is received. A second reception detection step of detecting a reception state of the second broadcast; and a second reception detection step of detecting the reception state of the second broadcast based on the reception state detection of the second broadcast. Warning of poor reception of broadcast, The third method of receiving digital broadcasting, characterized in that it comprises a broadcast receiving step of receiving a third broadcast transmitted by the transmission form of. 7. A digital broadcast receiving method for receiving a plurality of broadcasts having different transmission forms, a multi-broadcast detecting step of previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms. A first broadcast receiving step of receiving a first broadcast transmitted in a first transmission mode; a first reception detecting step of detecting a reception state of the first broadcast; and a reception of the first broadcast. A second broadcast receiving step of receiving the second broadcast transmitted in the second transmission mode when it is determined that the first broadcast is poorly received based on the state detection; and a reception state of the second broadcast. And a second reception detecting step of detecting the second broadcast, and if it is determined that the second broadcast is poorly received on the basis of the reception state detection of the second broadcast, the third broadcast transmitted in the third transmission form is detected. The third broadcast reception station to receive Method of receiving a digital broadcast, characterized by Tsu and a flop. 8. A digital broadcast receiving apparatus for receiving a plurality of broadcasts having different transmission modes, a multi-broadcast detecting means for previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission modes, and a selected first broadcast. First broadcast receiving means for receiving the first broadcast transmitted in the first transmission form, first reception detecting means for detecting a receiving state of the first broadcast, and receiving status of the first broadcast Second broadcast receiving means for warning the poor reception of the first broadcast when it is determined that the first broadcast is poorly received based on the detection, and for receiving the second broadcast transmitted in the second transmission mode. A digital broadcast receiving apparatus comprising: 9. A digital broadcast receiving apparatus for receiving a plurality of broadcasts having different transmission forms, and a multi-broadcast detecting means for previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms; First broadcast receiving means for receiving the first broadcast transmitted in the first transmission form, first reception detecting means for detecting a receiving state of the first broadcast, and receiving status of the first broadcast Second broadcast receiving means for warning the poor reception of the first broadcast when it is determined that the first broadcast is poorly received based on the detection, and for receiving the second broadcast transmitted in the second transmission mode. A second reception detecting means for detecting a reception state of the second broadcast; and a second broadcast when it is determined that the second broadcast is poorly received based on the detection of the reception state of the second broadcast. Is sent in the third transmission form. Digital broadcast receiving apparatus characterized by comprising a third broadcast receiving means for receiving a third broadcast. 10. A digital broadcast receiving apparatus for receiving a plurality of broadcasts having different transmission forms, and a multi-broadcast detecting means for previously detecting a multi-broadcast of a program broadcast by a plurality of broadcasts having different transmission forms; First broadcast receiving means for receiving the first broadcast transmitted in the first transmission form, first reception detecting means for detecting a receiving state of the first broadcast, and receiving status of the first broadcast When it is determined that the first broadcast is poorly received based on the detection, the second broadcast receiving means for receiving the second broadcast transmitted in the second transmission mode, and the reception state of the second broadcast are set. Second reception detecting means for detecting, and if the second broadcast is judged to be poorly received based on the detection of the reception state of the second broadcast, the third broadcast transmitted in the third transmission form is received. And a third broadcast receiving means for Digital broadcasting receiving apparatus to.