JP2010239578A - Video display device and video display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display device for allowing a user to receive broadcast waves receivable (decodable) by a video receiving apparatus outside the video display device, without any special processing, and a video display system including the video display device. <P>SOLUTION: In a television 11 connected to a plurality of external apparatuses, an interface connected to an external apparatus and a broadcast wave that can be transmitted from the external device connected to the interface to the television 11 as video information, are stored in a switching table in association with each other. When a user gives an instruction to display a broadcast wave that cannot be displayed on the television, the television 11 sets the external apparatus capable of transmitting the broadcast wave to the television 11 as a device to receive the broadcast wave, based on information stored in the switching table. The television 11 transmits a video information transmission command to the set external apparatus, receives and displays video information of the broadcast wave transmitted from the external apparatus in response to the transmission command. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a video display device and a video display system, and more particularly to a video display device that acquires video information from an external video receiving device and a video display system having the video display device.

Some of the pay broadcasting, digital terrestrial broadcasting, cable television broadcasting, and the like on a video display device such as a television show a program that requires an authentication card such as a B-CAS card. In these broadcasts and the like, scramble processing is performed on the broadcast wave, and key information necessary for descrambling processing at the time of viewing is stored in an authentication card such as a B-CAS card. A video display device such as a television uses the key information to descramble the received broadcast wave and displays the video after it has been made displayable. The authentication card can be directly inserted into a video receiver such as a recorder corresponding to the authentication card, and key information can be acquired by being inserted. One authentication card can be used to receive broadcast waves in various devices corresponding to the authentication card.

When there are two video display devices that receive broadcast waves using an authentication card, and the broadcast wave authentication card that the user wants to watch is inserted in a video display device that is different from the video display device that the user wishes to use It was necessary for the user to replace the authentication card, which was inconvenient for the user.

Therefore, a conditional access system that enables broadcast waves to be displayed even on a video display device without an authentication card by transmitting and receiving key information necessary for descrambling processing between the video display devices that are connected for communication, and A digital broadcast receiver has been proposed (see Patent Document 1).

JP 2008-35222 A

  In the case of broadcast wave reception using an authentication card, at the time of video recording, the authentication card must be inserted in a recorder such as an HDD recorder or DVD recorder having a recording function connected to the TV, not the TV main body. However, when watching the broadcast wave on a television, the user must turn on the recorder, set the broadcast wave to be received by the recorder, and switch the input of the television, which is troublesome for the user. It has become a thing.

  In recent years, televisions can be connected to many external video receivers, and when many external video receivers are connected, whichever is always used when trying to view the necessary broadcast waves on the authentication card. Inputs must be switched after grasping which authentication card is inserted in the device, which is a burden on the user.

  The present invention has been made in view of the above problems, and a video display capable of acquiring a broadcast wave that can be received (decoded) by a video reception device outside the video display device without any special operation by the user. An object of the present invention is to provide a video display system having the device and the video display device.

The video display device according to the present invention is a video display device that displays a video of a received broadcast wave, the input means for inputting a display instruction indicating which broadcast wave video is to be displayed, and the broadcast A plurality of interfaces capable of communicating with an external device that receives waves and transmits them to the video display device as displayable video information, each of the plurality of interfaces, and each of the external devices connected to the interface includes the video Storage means for storing correspondence information associated with broadcast waves that can be transmitted to the display device, and broadcast waves corresponding to display instructions input by the input means are stored in the storage means The external device connected to the interface received via the interface associated with the broadcast wave when it matches the broadcast wave There has been characterized as having a receiving display means for displaying video information of dissipating wave transmission to be transmitted.

  The video display system according to the present invention is a video display system including a video display device that displays a video of a received broadcast wave, and a plurality of video receivers that can receive the broadcast wave. Includes an input means for inputting a display instruction indicating which broadcast wave image is to be displayed, a first interface communicably connected to the plurality of video reception devices, and the first interface. And correspondence information in which each of the video reception devices connected to the first interface is associated with broadcast waves that can be transmitted to the video display device as video information that can be displayed on the video display device. And when the broadcast wave to be displayed on the input means matches the broadcast wave stored in the storage means, the correspondence information is associated with the broadcast wave. And a first command transmission means for transmitting a video transmission command so that the video information is transmitted to the video display device. The video reception device is connected to the video display device. A second interface that is communicably connected; and a transmission unit that transmits the video information to the video display device when the video transmission command is received from the video display device via the second interface. The video display means further includes a receiving means for receiving the video information transmitted from the video receiving means, and a display means for displaying the video information received by the receiving means.

  When the video display device has information on which video receiving device connected to the video display device can acquire a predetermined broadcast wave, the user can perform a predetermined broadcast when the viewing channel is changed. It is possible to realize a video display device capable of automatically acquiring waves and a video display system having the video display device.

The figure which shows an example of the video display system in embodiment. The block diagram which shows an example of the structure of the video display system in embodiment, and the hardware constitutions of television. The block diagram which shows an example of the internal structure which performs the video information receiving destination switching in embodiment. The figure which shows an example of the information stored in the switching table in embodiment. The sequence diagram which shows an example of the flow of communication with the television and external apparatus in embodiment. The flowchart which shows an example of the selection flow of the external apparatus which performs image | video reception in embodiment.

An example of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an example of a video display system 10 according to the present embodiment. FIG. 1 shows a video display system 10, a television 11, a DVD recorder 12, a cable reception television 13, and an HDD recorder 14.

The video display system 10 is a video display system that displays received video such as broadcast waves. In this embodiment, the video display system 10 includes a television 11, a DVD recorder 12, a cable reception television 13, and an HDD recorder 14. is doing. In the present embodiment, the video is described as including an image and sound.

The television 11 is a video display device, and has a function of acquiring video information by receiving broadcast waves or receiving video information from a connected external device and outputting the video information to a user. In the present embodiment, the television 11 is connected to external devices such as the DVD recorder 12, the cable receiving television 13, and the HDD recorder 14 so that video information and commands can be transmitted and received. Hereinafter, in this embodiment, the external devices refer to the DVD recorder 12, the cable receiving television 13, and the HDD recorder 14.

The DVD recorder 12 is a video recording device such as a DVD (Digital Versatile Disk) recorder, for example, which receives broadcast waves and can write the received broadcast wave video information on a writable DVD. Further, it has a function of reading video information stored in a DVD and receiving broadcast waves and transmitting the video information to the connected television 11. The DVD recorder 12 has a pay broadcast authentication card such as a B-CAS card, for example, receives pay broadcast waves, and authenticates the received pay broadcast video information that has been scrambled. A descrambling process (decoding process) is performed using a descrambling key held in the card, and the video information is decrypted to a state that can be displayed on the television 11 and transmitted to the television 11. In this embodiment, it is assumed that the DVD recorder 12 can receive (decode processing) BS broadcast and CS broadcast as pay broadcasts.

The cable receiving television 13 is a video display device having a function of receiving cable television broadcasting and outputting video information to a user. In the display of cable television broadcasting, for example, an authentication card such as a B-CAS card is required, and the authentication card is inserted into the cable reception television 13. The cable receiving television 13 can communicate with the television 11 through a communication cable, and can transmit video information in a state that can be displayed on the television 11 to the television 11.

The HDD recorder 14 is a video recording device such as an HDD (Hard Disk Drive) recorder, and has an HDD that is a nonvolatile large-capacity storage medium. The HDD recorder 14 can write and read video information to and from the built-in HDD. Also, broadcast waves can be received. In this embodiment, the HDD recorder 14 has a pay broadcast authentication card such as a B-CAS card, and therefore receives pay broadcasts and performs descrambling (decoding) processing. Can be done. The HDD recorder 14 is connected to the television 11 and can transmit video information to the television 11 in a state where it can be displayed on the television 11. In this embodiment, the HDD recorder 14 can receive (decode processing) BS broadcast and CS broadcast as pay broadcasts. Further, the HDD recorder 14 has an interface connectable to a LAN (Local Area Network), and is connected to the TV 11 and the Internet through the LAN. The HDD recorder 14 can also acquire a net distribution video via the Internet.

FIG. 2 is a block diagram showing an example of the configuration of the video display system 10 and the hardware configuration of the television 11 in the present embodiment. 2 shows a video display system 10, a television 11, a DVD recorder 12, a cable receiving television 13, an HDD recorder 14, a CPU 201, a memory 202, an input unit 203, a tuner 204, a decoder 205, an authentication card 206, an authentication card I / F 207, An LCD 208, a display control unit 209, a speaker 210, an audio control unit 211, an HDMI I / F a 212, an HDMI I / F b 213, an HDMI I / F c 214, a communication I / F 215, and a bus 216 are shown.

In this embodiment, the television 11 includes a CPU 201, a memory 202, an input unit 203, a tuner 204, a decoder 205, an authentication card 206, an authentication card I / F 207, an LCD 208, a display control unit 209, a speaker 210, an audio control unit 211, an HDMI I / F a 212, HDMI I / F b 213, HDMI I / F c 214, communication I / F 215, and bus 216.

The CPU 201 is a central processing unit and controls the entire television 11. It also has a function of executing a program and performing a predetermined process according to the execution program.

The memory 202 is a non-volatile storage medium constituted by a semiconductor memory. Various programs executed by the CPU 201 are stored in the memory 202. In this embodiment, the memory 202 has a destination switching application program, and by executing this program, an interface connected to an external device that receives video information is selected. The memory 202 has a switching table that is used when the destination switching application executed by the destination switching application program is executed.

The input unit 203 has a function of inputting an operation instruction from the user to the television 11 as an electric signal. For example, the input unit 203 may be a receiving unit that receives an operation signal from a user operation button installed on the television 11 or a remote-controllable remote controller. The user can instruct the television 11 to select a channel to be viewed via the input unit 203.

The tuner 204 has a function of receiving a broadcast wave transmitted from a broadcast station.

The decoder 205 has a function of performing a decoding process on the broadcast wave received by the tuner 204 and converting the signal into a signal that can be output as an image or sound by the television 11.

The authentication card 206 is a card in which a descrambling key used for descrambling processing of a predetermined broadcast wave, such as a B-CAS card, is recorded. By inserting the authentication card 206, the television 11 can transmit a predetermined broadcast wave. Can be decoded and displayed. The authentication card 206 in this embodiment will be described by taking a B-CAS card used for digital terrestrial broadcast decoding as an example.

The authentication card I / F 207 has a function of reading the descramble key data held in the authentication card 206 and inputting it to the television 11. The authentication card I / F 207 can read data by inserting the authentication card 206 into the insertion slot.

The LCD 208 is, for example, a liquid crystal display, and is a display device in the television 11. It has a function of outputting image information of the television 11 to the user. In the present embodiment, a liquid crystal display is illustrated as an example of the LCD 208, but the present invention is not limited to this, and other display devices such as a CRT (Cathode Ray Tube), a PDP (Plasma Display Panel), and the like are conceivable. .

The display control unit 209 draws an image to be displayed on the television 11 based on a drawing instruction from the CPU 201, image information decoded by the decoder 205, and video information input from an external device, and displays the image on the LCD 208. It has a function to make it.

The sound output device in the speaker 210 has a function of outputting sound information of the television 11 to the user.

The audio control unit 211 generates audio output from the television 11 based on instructions from the CPU 201, audio information decoded by the decoder 205, or audio information input from an external device, and outputs audio to the speaker 210. It has a function to output.

The HDMI I / F a 212 is an interface that can be connected to an HDMI standard connection module, and the HDMI I / F a 212 is connected to the DVD recorder 12. The HDMI I / F a 212 can transmit and receive images, audio signals, commands, and data to and from an external device connected by an HDMI standard connection module.

The HDMI I / F b 213 is an interface that can be connected to an HDMI standard connection module, and the HDMI I / F b 213 is connected to the cable receiving television 13. The HDMI I / F b 213 can transmit and receive images, audio signals, commands and data to and from an external device connected by an HDMI standard connection module.

The HDMI I / F c 214 is an interface that can be connected to an HDMI standard connection module, and the HDMI I / F c 214 is connected to the HDD recorder 14. The HDMI I / F c 214 can transmit and receive images, audio signals, commands, and data with an external device connected by an HDMI standard connection module.

The communication I / F 215 is a LAN I / F, for example, and is an interface that can be connected to an external LAN cable in this embodiment. It is possible to communicate with external devices and send / receive information via a LAN cable. In this embodiment, the communication I / F 215 is connected to the HDD recorder 14 via a LAN cable.

A bus 216 can communicate with each connected module in the television 11.

FIG. 3 is a block diagram showing an example of an internal configuration for switching the video information receiving destination in the present embodiment. FIG. 3 shows a memory 202, an input unit 203, an LCD 208, a display control unit 209, a speaker 210, an audio control unit 211, an HDMI I / F a 212, an HDMI I / F b 213, an HDMI I / F c 214, a communication I / F 215, and a reception. A destination switching application 31, a communication unit 32, a reception recognition unit 33, a channel recognition unit 34, a video transmission unit 35, and a switching table 36 are shown.

The reception destination switching application 31 is an application when the CPU 201 executes a reception destination switching application program stored in the memory 202, and the television 11 is connected to the HDMI I / F a 212 and HDMI I / F b 213 by the reception destination switching application 31. It is possible to determine from which interface of the HDMI I / F c 214 and the communication I / F 215 the video is to be received, to receive the video information from the determined external device, and to display it.

The communication unit 32 has a function of transmitting / receiving various data and commands to / from the HDMI I / F a 212, HDMI I / F b 213, HDMI I / F c 214, and communication I / F 215.

The reception recognition unit 33 communicates with an external device via the communication unit 32, acquires broadcast wave information that can transmit video information in a state in which the television 11 can output in each external device, and stores the information in the memory 202. The switching table 36 has a function of storing acquired information.

The channel recognition unit 34 has a function of acquiring channel selection information input from the input unit 203 selected by the user using a remote controller or the like, and setting an interface for receiving broadcast wave video information corresponding to the selected channel. is doing. In the television 11, a combination of broadcast waves and channels is set, and when a user selects a predetermined channel, video of broadcast waves associated with the channel is output by the setting. The television 11 is set with a channel corresponding to a broadcast wave such as a pay broadcast that cannot be output by the television 11 alone, and the broadcast wave that the television 11 cannot output alone without being connected to an external device. When switching to a channel corresponding to, the broadcast wave is not displayed. However, in the television 11 in the present embodiment, when a broadcast wave that is set for a channel but cannot be decoded is selected for display by the user, the broadcast wave image is received from an external device that can acquire the image, It is possible to output video. When a channel corresponding to a broadcast wave that cannot be decoded by the television 11 is selected, the channel recognition unit 34 uses the information stored in the switching table 36 to set an interface for receiving broadcast wave video information. And a function of instructing transmission of video information to an external device connected to the interface set via the communication unit 32.

The video transmission unit 35 performs a function of transferring video information input from an external device via the communication unit 32 to the display control unit 209 and the audio control unit 211 and outputs a broadcast wave corresponding to the selected channel. When it is not possible, the display control unit 209 has a function of notifying that the broadcast wave of the selected channel cannot be viewed.

FIG. 4 is a diagram showing an example of information stored in the switching table 36 in the present embodiment.

As shown in FIG. 4, the switching table 36 in this embodiment includes HDMI I / F a 212, HDMI I / F b 213, HDMI I / F c 214, and communication I / F 215, and video information that can be received from each interface. Stored in association. In the present embodiment, the broadcast wave category input from the external device is exemplified by BS broadcast, CS broadcast, cable TV broadcast, and net distribution video as shown in the figure, but is not limited to this, for example, broadcast It is possible to categorize such as categorizing each wave broadcast channel, and various other examples of category categorization and receivable broadcast waves are possible. Further, instead of associating each interface with a broadcast wave, for example, each external device and a broadcast wave may be associated with each other and stored.

For example, since the DVD recorder 12 can receive (decode) BS broadcast and CS broadcast, the television 11 receives video information of BS broadcast and CS broadcast from the HDMI I / F a 212 connected to the DVD recorder 12 via an HDMI cable. It is possible to receive.

In addition, since the HDD recorder 14 can receive (decode processing) BS broadcasts, CS broadcasts, and net-distributed moving images, the television 11 can receive BS broadcasts and CS broadcasts from the HDMI I / F c 214 connected to the HDD recorder 14 via an HDMI cable. The video distribution information can be received from the communication I / F 215 connected via the LAN.

In the present embodiment, the reception recognition unit 33 is connected to each external device via the communication unit 32 and the interfaces of the HDMI I / F a 212, the HDMI I / F b 213, the HDMI I / F c 214, and the communication I / F 215 when the TV 11 is activated. In response to this, a command is sent to the television 11 to transmit broadcast wave information capable of transmitting video information to the television 11 in a displayable state, and the switching table is set according to the returned broadcast wave information. 36 is created. In the present embodiment, the start time of the television 11 is exemplified as the timing at which the reception recognition unit 33 acquires the information for creating the switching table 36, but the present invention is not limited to this. For example, to the interface of each external device Information may be acquired at the timing when the connection is made. Since the memory 202 is a non-volatile storage medium, information is retained even when the TV 11 is turned off. Therefore, when information is acquired at the time of connection, there is no change in the external device connected at the time of power-off. Sometimes it is not necessary to acquire information when the TV 11 is activated.

  FIG. 5 is a sequence diagram illustrating an example of a communication flow between the television 11 and an external device in the present embodiment.

  First, when the television 11 is activated (S510), the reception recognition unit 33 in the destination switching application 31 includes the communication unit 32, the HDMI I / F a 212, the HDMI I / F b 213, the HDMI I / F c 214, and the communication I / F 215. A command is transmitted to each external device via the interface so as to transmit to the television 11 broadcast wave information capable of transmitting video information in a state where it can be output by the television 11 (S502). The external device receives the command (S503), and transmits information on broadcast waves that can be transmitted to the television 11 in response to the command (S504). The television 11 receives the information (S505), and creates the switching table 36 based on the received information (S506).

Next, when the user selects a predetermined channel associated with a broadcast wave that cannot be displayed on the television 11 alone, the channel recognition unit 34 detects the selection of the predetermined channel (S507) and corresponds to the predetermined channel. An interface capable of transmitting broadcast wave video information to the television 11 is selected (S508), and the broadcast wave video information is transmitted to the external device connected to the selected interface via the communication unit 32. The command is transmitted to 11 (S509). When the external device receives the command (S510), it receives a broadcast wave in accordance with the command, performs decoding processing (S511), and transmits the video information after the decoding processing to the television 11 (S512). . When the television 11 receives video information from an external device, the video transmission unit 35 transmits image information and audio information in the video information to the display control unit 209 and the audio control unit 211, respectively. The control unit 211 outputs image information and audio information acquired from the LCD 208 and the speaker 210.

Through the above processing, when the user selects a channel corresponding to a predetermined broadcast wave, the television 11 acquires video information from an external device that can receive (decode) the predetermined broadcast wave without the user's knowledge. As a result, the user can view a broadcast wave that cannot be viewed in the same manner as when viewing a broadcast wave that can be viewed by the television 11 alone.

FIG. 6 is a flowchart illustrating an example of a selection flow of an external device that performs video reception in the present embodiment.

When a channel corresponding to a broadcast wave that cannot be displayed by the television 11 alone is selected by the user, the channel recognition unit 34 refers to the information stored in the switching table 36 and receives the video information of the broadcast wave. Set the interface to be performed. The switching table 36 is read from the memory 202, and the receivable video information is confirmed for each column of the switching table 36.

Since the channel recognition unit 34 performs confirmation from the number 1 column of the switching table 36, first, the column for confirming whether or not reception is possible is designated as the number 1 column (S61). Next, it is confirmed whether or not video information of a predetermined broadcast wave can be received from the interface of the designated column (S62). If not received (S63, No), the number of the column to be confirmed is set to 1. Is added (S64), and the process returns to S62. If video information can be received from the interface of the number designated in S63 (Yes), the interface to receive is set to that interface (S65).

With the above flow, it is possible to set an interface capable of receiving video information, and it is possible to receive video information of a predetermined broadcast wave.

In addition, when an external device that can receive the broadcast wave becomes unable to transmit video information to the television 11 connected to the interface selected by the above flow due to reserved recording, the external device Is notified that the video information cannot be transmitted. When the television 11 receives the notification, the channel recognition unit 34 resets an external device that can receive the video information. At this time, the channel recognizing unit 34 may start again to confirm whether or not reception is possible from a number obtained by adding 1 to the number of the currently set interface column.

If there is no interface capable of receiving broadcast wave video information corresponding to the selected channel in the switching table 36, the channel recognition unit 34 uses the video information transmission unit 35 to select the broadcast wave of the channel selected on the LCD 208. Displays a notification that viewing is not possible.

  The video display system 10 according to this embodiment includes a switching table 36 that stores information about video information of broadcast waves that can be received by the television 11 from an external device. When a channel is selected, the user can view a broadcast wave that cannot be viewed on the television 11 alone in the same procedure as when viewing a normal broadcast wave by setting the video information receiving destination with reference to the switching table 36. It becomes possible to do.

Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

10: Video display system 11: Television 12: DVD recorder 13: Cable reception television 14: HDD recorder 201: CPU
202: Memory 203: Input unit 204: Tuner 205: Decoder 206: Authentication card 207: Authentication card I / F
208: LCD
209: Display control unit 210: Speaker 211: Audio control unit 212: HDMI I / F a
213: HDMI I / F b
214: HDMI I / F c
215: Communication I / F
216: Bus 31: Destination switching application 32: Communication unit 33: Reception recognition unit 34: Channel recognition unit 35: Video transmission unit 36: Switching table

Claims (7)

An image display device that displays an image of a received broadcast wave,
Input means for inputting a display instruction indicating which broadcast wave image to display;
A plurality of interfaces capable of communicating with an external device that receives the broadcast wave and transmits it to the video display device as video information that can be displayed;
Storage means for storing correspondence information in which each of the plurality of interfaces is associated with a broadcast wave that can be transmitted to the video display device by each of the external devices connected to the interface;
The interface received via the interface associated with the broadcast wave when the broadcast wave corresponding to the display instruction input by the input means matches the broadcast wave stored in the storage means Receiving display means for displaying video information of the broadcast wave transmitted from the external device connected to the video display device Acquisition means for acquiring broadcast wave information of broadcast waves that can be transmitted as the video information by the external device from the external device;
The video display apparatus according to claim 1, further comprising a creation unit that creates the correspondence information based on broadcast wave information acquired by the acquisition unit. The reception display means includes
Based on the correspondence information stored in the storage means, setting means for setting so as to be receivable from the interface of the receiving destination that receives the video information;
Command transmitting means for transmitting a command for transmitting the video information of the broadcast wave to the display device to the external device connected to the interface set by the setting means;
Receiving means for receiving the video information transmitted from the external device;
3. The video display apparatus according to claim 1, further comprising display means for displaying the video information received by the receiving means. When receiving the video information from the predetermined external device and receiving a notification to interrupt transmission of the video information from the external device,
The setting means includes
4. The video according to claim 3, wherein an interface other than an interface to which the predetermined external device is connected based on the correspondence information stored in the storage means is used as a receiver of the broadcast wave video information. Display device. A video display system comprising a video display device that displays a broadcast wave image to be received and a plurality of video reception devices capable of receiving the broadcast wave,
The video display device
An input means for inputting a display instruction indicating which broadcast wave image to display;
A first interface communicably connected to the plurality of video receiving devices;
The first interface is associated with a broadcast wave that can be transmitted to the video display device as video information that can be displayed on the video display device of each of the video reception devices connected to the first interface. Storage means for storing the correspondence information;
When the broadcast wave instructed to be displayed on the input means matches the broadcast wave stored in the storage means, the video information is sent to the video receiving apparatus associated with the broadcast wave in the correspondence information. A first command transmission means for transmitting a video transmission command so as to transmit to the video display device, and the video reception device is connected to the video display device in a communicable manner with a second interface. ,
When the video transmission command is received from the video display device via the second interface, the video transmission device has transmission means for transmitting the video information to the video display device,
The video display means includes
Receiving means for receiving the video information transmitted from the video receiving means;
The video display system further comprising display means for displaying the video information received by the receiving means. The video display device
A second information transmission command is transmitted to the video reception device so that transmittable information, which is broadcast wave information that can be transmitted as video information that can be displayed on the video display device, is transmitted to the video display device. A command transmission means;
The video receiver is
When the information transmission command is received from the video display device, the information transmission command further includes first information transmission means for transmitting the transmittable information to the video display device,
The storage means of the video display device is
When the transmittable information is received from the video receiving device, the first interface to which the video receiving device is connected and the broadcast wave of the transmittable information are associated with each other and stored as the correspondence information. The video display system according to claim 5. The video receiver is
When transmitting the video information during transmission of the video information to the video display device, the video display device further includes notification means for transmitting a notification to the effect that the transmission of the video information is interrupted. ,
The first command transmission means of the video display device includes:
When the notification is received, the video transmission command is transmitted to a video receiving device other than the video receiving device that has been associated with the broadcast wave by the correspondence information and has transmitted the notification. Item 7. The video display system according to Item 6.

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