JP2012209725A - Digital broadcast receiver, display terminal, and digital broadcast receiving system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display terminal connected with a plurality of digital broadcast receivers via a network and by which a channel not selected by the digital broadcast receiver can be viewed and listened.SOLUTION: A transmission/reception section 30 receives a one-segment broadcast transport stream transmitted via a network from a set-top box STB configured to receive digital broadcast including one-segment broadcast and 12-segment broadcast. A switching instruction section 24 transmits a switching instruction signal instructing to switch an output destination of the one-segment broadcast or the 12-segment broadcast transport stream to the set-top box. In the case that the same channel is selected in a plurality of set-top boxes, the switching instruction section 24 transmits the switching instruction signal instructing any one receiver to transmit the 12-segment broadcast transport stream of the channel to another receiver being selecting the same channel.

Description

  The present invention relates to a reception technology for terrestrial digital broadcasting.

  In terrestrial digital broadcasting, currently one channel is divided into 13 segments, of which 12 segments are ordinary digital broadcasts and the remaining 1 segment is transmitted as so-called one-segment broadcasts (hereinafter sometimes referred to as one-segment broadcasts). Yes. One-segment broadcasting is mainly used as simple video broadcasting for mobile terminals and in-vehicle terminals.

  As a usage form of such one-segment broadcasting, for example, in Patent Document 1, OFDM digital broadcasting including one-segment broadcasting in a band is transmitted to a wired transmission path so that the one-segment broadcasting can be received with high quality even indoors. There is disclosed a one-segment broadcast system that includes a transmission means for transmitting on the transmission side, and a relay device for wirelessly connecting the one-segment broadcast transmitted on a wired transmission path to a portable receiving terminal on the reception side.

JP 2008-034898 A

  However, with the technique described in Patent Document 1, it is not possible to view with a portable receiving terminal other than the channel currently selected by the receiving-side relay device. Also, if the power of the relay device is off, the mobile receiving terminal cannot naturally watch the broadcast.

  The present invention has been made in view of such circumstances, and an object thereof is to be desired by a user at a display terminal using a display terminal and a plurality of digital broadcast receivers connected to the display terminal via a network. The object is to provide a technique for enabling one-segment broadcasting channels to be viewed as much as possible.

  One embodiment of the present invention is a display terminal for digital broadcasting. The display terminal includes a tuner unit that receives a one-segment broadcast transport stream transmitted via a network from a digital broadcast receiver configured to receive terrestrial digital broadcasts including one-segment broadcasts, and one-segment broadcasts. Decoding unit for decoding the transport stream and switching instruction for transmitting a switching instruction signal for instructing switching of the output destination of the transport stream of the terrestrial digital broadcasting other than the one-segment broadcasting or the one-segment broadcasting to the digital broadcasting receiver And a status acquisition unit that acquires a status including at least information on the power on / off state and the channel being selected in a plurality of digital broadcast receivers connected via a network. The switching instruction unit refers to the status, and when the same channel is being selected in two or more digital broadcast receivers among a plurality of digital broadcast receivers, Then, a switching instruction signal is transmitted to instruct another digital broadcast receiver that is selecting the same channel to transmit a terrestrial digital broadcast transport stream other than the one-segment broadcast of the channel.

  According to this aspect, the transport stream of terrestrial digital broadcasting (for example, 12 segment broadcasting) other than the one-segment broadcasting received by one receiver can be decoded by each of the two receivers. The receiver on the receiving side does not need to receive the 12-segment broadcast as long as the same channel is viewed.

  You may further provide the channel selection instruction | indication part which transmits the channel selection instruction | indication signal which instruct | indicates to switch to the channel different from the channel currently selected to another digital broadcast receiver. In this case, the switching instruction unit transmits a switching instruction signal for instructing another digital broadcast receiver to switch the output destination of the one-segment broadcast transport stream in the channel after switching to the display terminal. Also good.

  According to this, it is possible to select another channel in the receiver that does not need to receive terrestrial digital broadcasts other than the one-segment broadcast, and send the transport stream of the one-segment broadcast to the display terminal. Therefore, on the display terminal, it is possible to view a one-segment broadcast of a channel that was not initially selected by the receiver.

  The status further includes information indicating the usage status of the corresponding digital broadcast receiver, and the switching instruction unit refers to the usage status and should transmit a switching instruction signal to any of the digital broadcast receivers. You may decide whether or not.

  Another aspect of the present invention is a digital broadcast receiver. This receiver tunes to one channel of terrestrial digital broadcasts including one-segment broadcasts, and receives the selected digital broadcast, and the received one-segment broadcasts or terrestrial digital broadcasts other than one-segment broadcasts Output destination switching unit for switching the output destination, decoding unit for decoding the transport stream of terrestrial digital broadcasts other than one-segment broadcast, and one-segment broadcast transport stream can be reproduced via a network A transmission unit that transmits the information to the display terminal. When there is another digital broadcast receiver that selects the same channel as the channel being selected, the output destination switching unit performs one-segment broadcasting of the channel being selected according to an instruction given from the display terminal. A terrestrial digital broadcast transport stream other than the above is transmitted to another digital broadcast receiver.

  The output destination switching unit outputs a terrestrial digital broadcast transport stream other than the one-segment broadcast transmitted from another digital broadcast receiver to the decoding unit, and the tuner unit selects according to an instruction given from the display terminal. The channel different from the channel in the station may be selected, and the output destination switching unit may transmit the one-segment broadcast transport stream in the channel after switching to the display terminal.

  Yet another aspect of the present invention is a digital broadcast receiving system including a plurality of digital broadcast receivers and a display terminal connected to each other via a network. The digital broadcast receiver selects a channel of one of the terrestrial digital broadcasts including the one-segment broadcast and receives the selected digital broadcast, and the received one-segment broadcast or the terrestrial digital other than the one-segment broadcast An output destination switching unit that switches the output destination of a broadcast, a decoding unit that decodes a transport stream of a terrestrial digital broadcast other than a one-segment broadcast, and a one-segment broadcast transport stream that can be played back via a network A transmission unit that transmits data to a display terminal. The display terminal receives a one-segment broadcast transport stream transmitted from the digital broadcast receiver via the network, a one-segment decoder for decoding the one-segment broadcast transport stream, and a digital broadcast receiver. On the other hand, a switching instruction unit for transmitting a switching instruction signal for instructing switching of the output destination of the transport stream of the one-segment broadcasting or the terrestrial digital broadcasting other than the one-segment broadcasting; A status acquisition unit that acquires a status including at least information on channels in the station. When there are two or more digital broadcast receivers that have selected the same channel, the switching instruction unit of the display terminal determines whether the same channel is selected for any one of the digital broadcast receivers. A switching instruction signal for instructing to transmit a digital terrestrial broadcasting transport stream other than the one-segment broadcasting of the channel is transmitted to the digital broadcasting receiver, and the output destination switching unit of the digital broadcasting receiver In response to the signal, a transport stream of terrestrial digital broadcast other than the one-segment broadcast of the channel being selected is transmitted to another digital broadcast receiver.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  According to the present invention, using a display terminal and a plurality of digital broadcast receivers connected to the display terminal via a network, the user can view the one-segment broadcast channel desired by the user on the display terminal as much as possible. Is possible.

1 is a schematic configuration diagram of a system including a display terminal and a set top box according to an embodiment of the present invention. It is a figure which shows the example which views and listens to 1 seg broadcasting with a display terminal, when the power supply of all the set top boxes connected to a network is OFF. It is a figure which shows the example which views 1seg broadcasting on a display terminal, when the power supply of all the set top boxes connected to a network is ON, and a different channel is selected by all the set top boxes. The figure showing an example of watching 1Seg broadcasting on a display terminal when the power of all set-top boxes connected to the network is on and the same channel is selected in two or more set-top boxes. is there. It is a flowchart explaining the operation | movement in a display terminal.

  FIG. 1 is a schematic configuration diagram of a terrestrial digital broadcast receiving system 100 including a display terminal 10 and a set-top box STB according to an embodiment of the present invention. The display terminal 10 and the set top box STB are connected via a network 12 such as a LAN (Local Area Network) or the Internet. Note that a wired connection or a wireless connection may be used between the network 12 and the display terminal 10 and between the set-top box STB and the network 12.

  The set top box STB receives the OFDM digital broadcast including the one segment broadcast in the band. The OFDM-modulated digital broadcasting includes 12-segment broadcasting and one-segment broadcasting (hereinafter referred to as “one-segment”). The set top box STB may have only a terrestrial digital broadcast compatible tuner, or may have another function such as a recording function. Like a so-called digital terrestrial broadcast television or recorder, it may be incorporated in a television receiver or recorder.

  The set-top box STB is configured to output a 12-segment broadcast in a transport stream (hereinafter referred to as “TS”) after OFDM demodulation to a television receiver TV connected to the set-top box. Is done. Furthermore, the set top box STB is configured to be able to transmit the one seg in the TS to the network 12 in response to an external command simultaneously with this output.

  The display terminal 10 is an electronic device including at least an operation unit such as a network connection function, a display for playing back one segment, and a button for inputting a user instruction to the set top box. The display terminal itself does not include an antenna and a tuner for receiving 1Seg. Instead, the display terminal 10 is configured to acquire the one seg received by the set top box STB via the network and reproduce it on the display terminal.

  FIG. 1 also shows a block diagram showing detailed configurations of the set-top box STB and the display terminal 10. This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of an arbitrary computer, and is realized in terms of software by a program loaded in the memory. It depicts the functional blocks that are realized. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.

  The set top box STB includes a tuner unit 44, an OFDM demodulation unit 46, an output destination switching unit 48, a transmission / reception control unit 50, a TS decoding unit 52, an output unit 54, a power supply control unit 56, and a status creation unit 58.

  The tuner unit 44 tunes a digital broadcast wave having a desired frequency among the digital broadcast waves received by the antenna 40, and extracts an OFDM signal from the tuned digital broadcast wave.

  As will be described later, tuning is performed by setting the frequency of the corresponding channel in accordance with the channel selection instruction signal sent from the display terminal 10.

  The OFDM demodulation unit 46 demodulates the OFDM signal extracted by the tuner unit 44 and sends the obtained TS to the output destination switching unit 48.

  The output destination switching unit 48 sends the 12-segment broadcast TS sent from the OFDM demodulation unit 46 to the TS decoding unit 52. As will be described later, the 12-segment or one-segment TS sent from the OFDM demodulator 46 is passed to the transmission / reception controller 50 in response to the switching instruction signal sent from the display terminal 10. Further, as will be described later, a 12-segment broadcast TS sent from another set-top box via the network 12 is sent to the TS decoding unit 52.

  The TS decoding unit 52 decodes the 12-segment broadcast TS, converts the TS into a signal that can be viewed on a normal television receiver, and sends the signal to the output unit 54. The output unit 54 outputs the 12-segment broadcast to the television receiver TV.

  The transmission / reception control unit 50 sends various instruction signals sent from the display terminal 10 via the network 12 to the corresponding block. Further, the 12-segment broadcast TS sent from another set top box is passed to the output destination switching unit 48.

  The power control unit 56 turns on / off the main power of the set top box in response to a power instruction signal sent from the display terminal 10.

  The status creation unit 58 acquires a status that is information related to the operating state of the set top box STB, and stores it in a memory (not shown). The status includes at least information for identifying the set top box on the network (for example, IP (Internet Protocol) address or MAC (Media Access Control) address), main power on / off, and the channel being selected. It is. Information such as the frequency of channel switching in the set top box, the continuous channel selection time of the currently selected channel, and whether or not recording is in progress may be further included.

  It is assumed that the transmission / reception control unit 50, the power supply control unit 56, and the status creation unit 58 are operating by the sub power even when the main power is off.

  The display terminal 10 includes an operation unit 14, a control unit 20, a transmission / reception unit 30, a TS decoding unit 32, an output unit 34, and a display 36.

  The operation unit 14 includes means such as a button for inputting a remote operation of the set top box by the user, and changes the operation content to a signal and sends it to the control unit 20.

  The control unit 20 includes a power supply instruction unit 22, a switching instruction unit 24, a channel selection instruction unit 26, and a status acquisition unit 28.

  The power supply instruction unit 22 transmits a power supply instruction signal for instructing power-on to the power supply control unit 56 of the designated set-top box in accordance with the operation by the user.

  The switching instruction unit 24 transmits a switching instruction signal instructing the output destination switching unit 48 of the designated set-top box to send a one-segment TS over the network in response to an operation by the user.

  The channel selection instruction unit 26 transmits a channel selection instruction signal for instructing the tuner unit 44 of the specified set-top box to switch to the specified channel according to the operation by the user. The channel selection instruction signal includes information (for example, an IP address or a MAC address) for identifying the display terminal 10 on the network.

  The status acquisition unit 28 searches for a set-top box connected to the network 12 according to an operation by a user, and acquires a status for instructing to transmit the status recorded in the status creation unit 58 of each set-top box. Send a signal.

  The transmission / reception unit 30 transmits each signal emitted from the control unit 20 to the network 12. The one-segment TS sent from the set top box via the network 12 is passed to the TS decoding unit 32.

  The TS decoding unit 32 decodes the one-segment TS and sends it to the output unit 34. The output unit 34 reproduces the one segment on the display 36. The output unit 34 displays the contents of the status acquired by the status acquisition unit 28 on the display 36.

  Next, operations of the set top box STB and the display terminal 10 according to the present embodiment will be described with reference to FIGS.

  2 to 4, the set top boxes STB1 to STB1 are connected to one television receiver TV1 to TV3, respectively. Each of the television receivers TV1 to TV3 has a different viewer. Each set top box STB 1 to 3 is connected to the display terminal 10 via the network 12. The user uses the display terminal 10 to view the one seg received by any of STB1 to STB3.

  FIG. 2 shows an example in which one-segment broadcasting is viewed on the display terminal 10 when the power of all the set top boxes STB1 to STB1 connected to the display terminal 10 through the network is off.

  The status acquisition unit 28 of the display terminal 10 acquires the statuses of all the set top boxes STB1 to STB3 connected to the network and displays them on the display of the display terminal 10. When the user operates a button or the like to turn on the power of any set top box, the power instruction unit 22 transmits a power instruction signal including identification information of the set top box. In response to the power instruction signal, the power controller 56 of the designated set top box (STB 3 in FIG. 2) turns on the power.

  When the user performs an operation of selecting one of the channels (for example, 6ch), the channel selection instruction unit 26 transmits a channel selection instruction signal for specifying the channel, and the switching instruction unit 24 sends the one-segment TS to the display terminal 10. A switching instruction signal for instructing transmission is transmitted. The tuner unit 44 of the set top box STB3 changes the frequency to the channel specified by the channel selection instruction signal. In addition, the output destination switching unit 48 sends the one-segment TS to the network 12. As a result, the one-segment received by the set top box STB3 can be viewed on the display terminal 10.

  FIG. 3 shows the display terminal 10 when all the set-top boxes STB1 to STB1 connected to the display terminal 10 through the network are turned on and different channels are selected in all the set-top boxes. An example of viewing 1Seg broadcasting is shown. In the example of FIG. 3, 8ch is selected for STB1, 6ch is selected for STB2, and 10ch is selected for STB3. On the corresponding television receivers TV1 to TV3, 12 segment broadcasts of each channel are reproduced. The symbols on the screen of the television receiver are shown to distinguish the program being played on the screen.

  The status acquisition unit 28 of the display terminal 10 acquires the statuses of all the set top boxes STB1 to STB3 connected to the network and displays them on the display of the display terminal 10. When the user performs an operation of selecting one of the channels (for example, 10ch), the switching instruction unit 24 sends a one-segment TS to the display terminal 10 via the network with respect to the set top box STB3 that has selected 10ch. A switching instruction signal for instructing transmission is transmitted. The output destination switching unit 48 of the set top box STB 3 sends the one-segment TS to the network 12. As a result, the one-segment received by the set top box STB3 can be viewed on the display terminal 10.

  FIG. 4 shows the display terminal when all the set-top boxes STB1 to STB1 connected to the display terminal 10 through the network are turned on and the same channel is selected in two or more set-top boxes. 10 shows an example of viewing one-segment broadcasting. In the example of FIG. 4, the same channel (8ch) is selected in the set top boxes STB1 and STB2, and a different channel (10ch) is selected in the set top box STB3. On the corresponding television receivers TV1 to TV3, 12 segment broadcasts of each channel are reproduced.

  The status acquisition unit 28 of the display terminal 10 acquires the statuses of all the set top boxes STB1 to STB3 connected to the network and displays them on the display of the display terminal 10. When the user performs an operation of selecting one of STB1 and STB2 (STB1 in FIG. 4) selecting the same channel, the switching instruction unit 24 performs 12-segment TS on the set top box STB1. Is transmitted to the set top box STB2. This switching instruction signal includes information for identifying the set top box STB2.

  The output destination switching unit 48 of the set top box STB 1 sends out 12 segments of TS to the network 12. At this time, it should be noted that the output destination switching unit 48 passes the same TS to the TS decoding unit 52. Therefore, the television receiver TV1 can continue to view the 12-channel broadcast of the same channel (8ch).

  The transmission / reception control unit 50 of the set-top box STB 2 receives the 12-segment TS via the network 12 and passes it to the output destination switching unit 48. The output destination switching unit 48 passes the 12-segment TS to the TS decoding unit 52. As a result, the television receiver TV2 connected to the set top box STB2 can continue to view the 12-segment broadcast of the same channel (8ch). The above processing eliminates the need for the tuner unit 44 of the set top box STB2 to receive 8ch digital broadcasting.

  In this state, when the user performs an operation of selecting one of the channels (for example, 6ch) on the display terminal 10, the channel selection instruction unit 26 transmits a channel selection instruction signal specifying the channel to the set top box STB2, The switching instruction unit 24 transmits a switching instruction signal for instructing to transmit the one-segment TS to the display terminal 10 to the set top box STB2. The tuner unit 44 of the set top box STB2 changes the frequency to the channel (6ch) instructed by the channel selection instruction signal. In addition, the output destination switching unit 48 sends the one-segment TS to the network 12. As a result, the one-segment received by the set top box STB2 can be viewed on the display terminal 10.

  As described above, in the example of FIG. 4, it is possible to view one seg of a channel that was not initially selected in any set top box on the display terminal.

  In the above description regarding FIG. 4, it has been described that the user selects a set-top box that transmits a 12-segment TS to the network. However, the switching instruction unit 24 may automatically determine the set-top box. For example, referring to the status acquired by the status acquisition unit 28, a set top box with the least frequency of channel switching is specified, and a switching instruction signal for sending a 12-segment TS from the specified set top box to the network. You may send it. Alternatively, referring to the status, a set-top box that is being recorded may be identified, and a switching instruction signal for transmitting a 12-segment TS to the network may be transmitted from the identified set-top box. This is because if the channel is switched in the set-top box STB1 on the TS transmission side, the channel also changes in the television receiver TV2 connected to the set-top box STB2 on the TS reception side. This is because it is preferable to use a set-top box with a low possibility of switching on the TS transmission side.

  Further, in the example of FIG. 4, when it is detected that the channel is switched in the set top box STB1 by the continuous monitoring of the status, it may be immediately returned to the example of FIG. Specifically, when it is detected that the channel of STB1 has been switched, the switching instruction unit 24 of the display terminal 10 sends the transmission destination of the 12-segment TS to the output destination switching unit 48 of the set top box STB1. A switching instruction signal instructing to return to the decoding unit 52 is transmitted. Further, the channel selection instruction unit 26 transmits a channel selection instruction signal instructing the tuner unit 44 of the set top box STB2 to return to the previously selected channel.

  FIG. 5 is a flowchart for explaining the operation in the display terminal 10.

  The status acquisition unit 28 of the display terminal 10 searches all set-top boxes connected to the network 12 and acquires the respective statuses (S10). The output unit 34 displays the status of the found set top box on the display of the display terminal 10.

  When there is a set-top box that is turned off (Y in S12), the user selects any one of the displayed set-top boxes and determines a channel to be selected in the set-top box ( S20). In response to this, a power supply instruction signal and a channel selection instruction signal are transmitted from the power supply instruction unit 22 and the channel selection instruction unit 26 of the display terminal 10 to the selected set-top box. Thereafter, the transmission / reception unit 30 receives the TS of the channel selected by the set top box, and after the decoding by the TS decoding unit 32, the one-segment is reproduced on the display 36 (S28).

  In S12, when there is no power-off set-top box (N in S12), it is further determined by referring to the status whether there are two or more set-top boxes that have selected the same channel (S14). ). When there is no set top box that selects the same channel, that is, when different channels are selected in all the set top boxes (N in S14), the display terminal 10 selects a channel in each set top box. The middle channel is displayed on the display (S24). When the user selects any channel, a switching instruction signal is transmitted from the switching instruction unit 24 to the set top box that is reproducing the selected channel (S26). In response to this, the output destination switching unit 48 of the set-top box sends a one-segment TS toward the display terminal 10. Thereafter, the transmission / reception unit 30 receives the TS, and after the decoding by the TS decoding unit 32, the one segment is reproduced on the display 36 (S28).

  In S14, when there are a plurality of set-top boxes that select the same channel (Y in S14), the display terminal 10 displays information for specifying the set-top box that selects the same channel. It is displayed above (S16). Subsequently, one of the set top boxes is selected (S18). This selection may be performed by the user, or may be automatically performed by the switching instruction unit 24. When the user performs, one of the displayed set-top boxes is selected, and a channel to be selected in the set-top box is determined (S20). When automatically performing, the switching instruction unit 24 selects any one of the set top boxes based on the status acquired by the status acquisition unit 28, and then causes the user to select a desired channel (S22). In response to this, the switching instruction signal and the channel selection instruction signal described above are transmitted from the switching instruction unit 24 and the channel selection instruction unit 26 of the display terminal 10 to the set top box. Thereafter, the transmission / reception unit 30 receives the TS of the channel selected by the set top box, and after the decoding by the TS decoding unit 32, the one-segment is reproduced on the display 36 (S28).

  As described above, according to the present embodiment, various instruction signals can be issued from the display terminal to the set-top box connected to the network. For example, when there is a set-top box that is turned off, the power can be turned on by a command from the display terminal, a desired channel can be selected, and the one-segment can be received.

  If all set-top boxes are powered on and different channels are selected, select one of the set-top boxes on the display terminal to select You can receive 1Seg of the channel.

  If the same channel is selected in a set-top box connected to a network, the 12-segment TS processed by any one set-top box can be distributed to other set-top boxes. In other set-top boxes, different channels can be selected by a command from the display terminal. In this case, it becomes possible to view on the display terminal one-segment of the channel that was not initially selected.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. .

  In the embodiment, the one-segment TS is transmitted to the display terminal via the network. However, if the display terminal can reproduce the 12-segment broadcast, the 12-segment TS is transmitted via the network. The display terminal may reproduce this.

  In the embodiment, it has been described that the set-top box receives terrestrial digital broadcasting including 12-segment broadcasting and one-segment broadcasting. However, in the future, it is also conceivable that some of the 13 segments of terrestrial digital broadcasting (for example, 8 to 10 segments) will be allocated to wideband broadcasting and the rest (for example, 3 to 5 segments) will be allocated to narrowband broadcasting. Even in such a case, the present invention can be applied by using a wideband broadcast instead of the 12-segment broadcast and a narrowband broadcast instead of the one-segment broadcast in the above description of the embodiment.

  DESCRIPTION OF SYMBOLS 10 Display terminal, 20 Control part, 22 Power supply instruction | indication part, 24 Switching instruction | indication part, 26 Channel selection instruction | indication part, 28 Status acquisition part, 30 Transmission / reception part, 32 TS decoding part, 36 Display, 44 Tuner part, 48 Output destination switching part 50 transmission / reception control unit, 52 TS decoding unit, 56 power supply control unit, 58 status creation unit, STB1-3 set-top box, TV1-3 TV receiver.

Claims (6)

A tuner unit that receives a transport stream of a one-segment broadcast transmitted from a digital broadcast receiver configured to receive a terrestrial digital broadcast including a one-segment broadcast via a network;
A decoding unit for decoding the transport stream of the one-segment broadcasting;
A switching instruction unit for transmitting a switching instruction signal instructing switching of an output destination of a transport stream of terrestrial digital broadcasting other than one-segment broadcasting or one-segment broadcasting to the digital broadcast receiver;
A status acquisition unit for acquiring a status including at least information of an on / off state of a power source and a channel being selected in a plurality of digital broadcast receivers connected via a network;
The switching instructing unit refers to the status and receives one digital broadcast when the same channel is being selected in two or more digital broadcast receivers among the plurality of digital broadcast receivers. A switching instruction signal is transmitted to instruct the unit to transmit a transport stream of digital terrestrial broadcasting other than one-segment broadcasting of the same channel to another digital broadcasting receiver that is selecting the same channel. A display terminal characterized by that. A channel selection instruction unit that transmits a channel selection instruction signal for instructing the other digital broadcast receiver to switch to a channel different from the channel currently selected;
The switching instruction unit transmits a switching instruction signal for instructing the other digital broadcast receiver to switch the output destination of the transport stream of the one-segment broadcasting in the channel after switching to the display terminal. The display terminal according to claim 1, wherein: The status further includes information indicating the usage status of the corresponding digital broadcast receiver,
The display terminal according to claim 2, wherein the switching instruction unit determines which digital broadcast receiver should transmit the switching instruction signal with reference to the usage state. A tuner unit that tunes to one channel of terrestrial digital broadcasting including one-segment broadcasting and receives the selected digital broadcasting,
An output destination switching unit that switches an output destination of the received one-segment broadcast or terrestrial digital broadcast other than the one-segment broadcast;
A decoding unit for decoding a transport stream of terrestrial digital broadcasting other than one-segment broadcasting;
A transmission unit that transmits a transport stream of one-segment broadcasting to a display terminal that can reproduce the one-segment broadcasting via a network,
When there is another digital broadcast receiver that selects the same channel as the channel being selected, the output destination switching unit is configured to select the channel being selected according to an instruction given from the display terminal. A digital broadcast receiver characterized by transmitting a terrestrial digital broadcast transport stream other than the one-segment broadcast to the other digital broadcast receiver. The output destination switching unit outputs a transport stream of terrestrial digital broadcasting other than one-segment broadcasting transmitted from another digital broadcasting receiver to the decoding unit,
In response to an instruction given from the display terminal, the tuner unit selects a channel different from the channel being selected,
The digital broadcast receiver according to claim 4, wherein the output destination switching unit transmits a one-segment broadcast transport stream in the channel after switching to the display terminal. A digital broadcast receiving system including a plurality of digital broadcast receivers and display terminals connected to each other via a network,
The digital broadcast receiver
A tuner unit that tunes to one channel of terrestrial digital broadcasting including one-segment broadcasting and receives the selected digital broadcasting,
An output destination switching unit that switches an output destination of the received one-segment broadcast or terrestrial digital broadcast other than the one-segment broadcast;
A decoding unit for decoding a transport stream of terrestrial digital broadcasting other than one-segment broadcasting;
A transmission unit that transmits a transport stream of one-segment broadcasting to a display terminal that can reproduce the one-segment broadcasting via a network,
The display terminal is
A receiving unit for receiving a one-segment broadcast transport stream transmitted from the digital broadcast receiver via a network;
A one-segment decoding unit that decodes a transport stream of one-segment broadcasting;
A switching instruction unit for transmitting a switching instruction signal instructing switching of an output destination of a transport stream of terrestrial digital broadcasting other than one-segment broadcasting or one-segment broadcasting to the digital broadcast receiver;
A status acquisition unit for acquiring a status including at least information on an on / off state of a power source and a channel being selected in each digital broadcast receiver;
When there are two or more digital broadcast receivers that select the same channel, the switching instruction unit of the display terminal selects the same channel for any one of the digital broadcast receivers. A switching instruction signal instructing to transmit a transport stream of terrestrial digital broadcasting other than the one-segment broadcasting of the channel to another digital broadcasting receiver in the digital broadcasting receiver, and switching the output destination of the digital broadcasting receiver The digital broadcast unit transmits a transport stream of terrestrial digital broadcast other than the one-segment broadcast of the channel being selected to the other digital broadcast receiver in response to the switching instruction signal. Receiving system.

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