JP5151117B2 - Video display device, video display system, and reception switching method - Google Patents

Description

  The present invention, in a video display device that receives and displays the video over a network from a receiver that receives video transmitted by radio waves from a broadcast station, or a storage device that records video received by the receiver, The present invention relates to broadcast reception and program switching technology when a user selects a channel.

A large amount of broadcasted video is stored on the hard disk, and the stored video can be redistributed via the home network so that the stored video can be enjoyed even in remote rooms (for example, recorded on a hard disk recorder in the living room). You can view the recorded video on a computer in your study away from the living room)
DLNA (Digital Living Network Alliance) is a standard for interconnecting devices required to share content such as video and music stored on video devices and personal computers on a home network in order to embody such a concept. Is being advanced by.
DLNA supports not only content that has already been stored via the home network, but also support for live broadcast video and collaboration with mobile terminals.

  In the basic configuration of DLNA, an apparatus (server) that stores content stores digital content, for example, MPEG-2 encoded as video, and information about the video (genre, description, recording time, etc.) is also the same. It is remembered. As described above, for example, in a system configuration in which there is a server in the living room and a client such as a personal computer is placed in the study, a user in the study uses the client to search for the server, and information about the image is retrieved from the server. When the user selects a video to be played from the list, the selected information is sent from the client to the server via the network, and specified in response. The encoded content of the video is transmitted from the server to the client via the home network, and the client decodes the received data and provides it to the user as stored video.

  Also, when the live broadcast being received by the server tuner is redistributed from the server to the client, the server uses, for example, information obtained from the electronic program guide as information relating to the video, and the user performs the same procedure as described above. When there is a list inquiry from the client, the server sends the information to the client, and when the user specifies a desired program from the list displayed on the client screen, the specified information is sent from the client to the server via the network. When the server controls the tuner to change the channel so that the designated program is received, the encoded content of the corresponding program is retrieved and transmitted to the client via the home network, and then stored as described above. As if the client It decodes the data received Te, provides it to the user as a live image.

JP 2004-363659 A JP 2006-166303 A DLNA Home Networked Device Interoperability Guidelines v1.0

As described above, it is becoming possible to share video between devices including live broadcasting by interconnection via a network. Here, the client also includes a video device having a TV broadcast reception function (that is, a device with a built-in tuner and a function of receiving and watching TV broadcasts by connecting an antenna).
In such a video device, if an antenna is connected, even if the video is being viewed via the network as described above, by switching the video input from the network to the antenna input with the remote control and performing the channel selection operation, It is possible to watch live broadcasts easily.

However, when the antenna is not connected (that is, when it is only connected to the network), if the remote control operation as described above is performed, even if the reception function receives the signal from the antenna, the image cannot be displayed. , “Cannot receive” or “The antenna is not connected” is displayed, and the live broadcast cannot be viewed.
The problem to be solved by the present invention is that even if the antenna is not connected as described above, as long as it is connected to the network, it is possible to view the live broadcast with the same usability as when the antenna is connected. It is in providing the video display apparatus which is.

In order to solve the above-described problems, a broadcast receiving apparatus including a broadcast receiving unit that is connected to an antenna and receives a broadcast from the antenna, and a video redistribution unit that outputs the received broadcast video to a network according to the present invention, and an antenna Re-distributed video receiving means for receiving the video re-distributed by the video re-distributing means via the network, in addition to the broadcast receiving means from In a video display system comprising a video display device provided with a display means for presenting a video received by the user,
When the video display device determines whether or not an antenna is connected or the broadcast signal received by the antenna is checked to determine whether or not the broadcast can be received by the broadcast reception detection unit, and the broadcast reception detection unit determines that the broadcast cannot be received from the antenna. Remote tuning means for automatically transferring a channel selection operation (such as a channel number) received from a user to a broadcast receiving device via a network, and the broadcast receiving device selects the channel selection via the network by remote tuning means. When the operation is received, the broadcast video selected by the antenna connected to the broadcast receiving device is received, and the received broadcast video is transmitted to the video display device via the network by the video redistribution means. Even a video display device that can not receive broadcasts by means of being able to watch the broadcasts received by the antenna

  Further, in the video display device according to the present invention, a message may be displayed on the video display screen to notify the user that the video currently being presented is being sent from the external broadcast receiving device via the network. User interface means for blinking display with a lamp or the like is provided.

  According to the present invention, in a video display device that can also use its own broadcast reception function and the broadcast reception function of another device via a network, when it detects that its own broadcast reception function cannot be used, its own broadcast reception function The user's channel selection operation is automatically transferred to other broadcast receiving devices connected to the network, so that the user can enjoy watching the broadcast without having to worry about the antenna connection.

In a broadcast receiving apparatus connected to an antenna and a video display apparatus connected to the broadcast receiving apparatus via a network, in particular, the broadcast video can be viewed even if the video display apparatus is not connected to the antenna. When the video display device detects that the video display device cannot directly receive the broadcast, the method of transferring the channel selection operation for the video display device to the network-connected broadcast reception device makes it possible for the user to connect the antenna to the video display device. It is possible to enjoy the same ease of use as is connected.
The details of the present invention will be described below with reference to the illustrated embodiments.

  FIG. 1 is an overall configuration diagram related to Example 1 which is the first embodiment of the present invention. In this embodiment, there is a broadcast receiving device connected to an antenna, and a video display device connected to the broadcast receiving device via a home network. The broadcast receiving device is connected to the video display device via the home network. In response to the channel selection operation performed by the remote controller, the channel received from the broadcast station via the antenna is switched based on the channel selection operation, and the received video is redistributed to the video display device via the home network. The distribution video is presented to the user.

  In FIG. 1, reference numeral 1 denotes a video display device connected to the home network 3, which is capable of displaying video received via the home network and connecting the antenna in the same manner as the broadcast receiving device 2, so that the broadcasting station 6 In this embodiment, it is assumed that the antenna is not connected. Reference numeral 2 denotes a broadcast receiving apparatus, which receives a broadcast wave transmitted from the broadcast station 6 with an antenna 5 and displays an image of a channel designated by the user 4 via the home network 3 by a built-in channel selection function (tuner unit). It has a function of converting the extracted video to data that can be transmitted through the home network 3 (redistributed video data 700 described later) and transmitting it to the video display device 1.

  Reference numeral 3 denotes a home network, which is a wired or wireless transmission medium used for transmitting and receiving video and control information between the video display device 1 and the broadcast receiving device 2 by, for example, HTTP (Hyper Text Transport Protocol) (in this embodiment, Since a home network is assumed, a home network is used, but as an embodiment, it is not excluded that it is a network between the home and the outside of the home or between distant homes). Reference numeral 4 denotes a user who enjoys watching a video on the video display device 1, and the user can select a video using the remote controller 7. 5 is an antenna for the broadcast receiver 2 to receive broadcast video, 6 is a broadcast station, and 7 is a remote controller used by the user 4 for video selection.

  In FIG. 2, 101 is a video display unit for displaying video, 102 is a video decoding unit for converting video data 704 or channel selection video data 703 into a video signal 705 that can be displayed on the video display unit 101, and 103 is connected to an antenna. When the broadcast wave transmitted from the broadcast station, the video of the channel specified by the channel selection information 702 is taken out, the function of outputting this as the selected video data 703 to the video decoding unit 102, and the state of the broadcast wave received from the antenna. A tuner unit having a function of determining and receiving a broadcast reception detection signal 600 indicating whether the antenna is connected or not, or whether the signal quality is good or not, to the channel selection control unit 105 (however, as described above, in the video display device 1 in this embodiment, 104 is not connected to the antenna), and 104 is a redistribution video data to be described later from the broadcast receiving apparatus 2 via the home network 3. The network interface unit 105 for receiving the data 700 and transmitting the remote channel selection information 701 receives the broadcast reception detection signal 600 and indicates that the signal is connected to the antenna. The channel selection information 702 received from the network interface 106 is output to the tuner unit 103. Conversely, if the signal indicates that the antenna is not connected or the signal quality is low, the network interface unit 104 In order to obtain video data by remotely operating the tuner unit 201 of the broadcast receiving apparatus 2 connected via the home network 3, a remote channel selection information 701 obtained by adding data format information 108 described later to the channel selection information 702 is used as a network interface. This is a channel selection control unit that outputs to the unit.

106 is a user interface unit that receives a signal from the remote controller 7 operated by the user 4 and outputs channel selection information 702 to the channel selection control unit 105, and 107 is the video data 707 received by the broadcast receiver 2, and the home network 3. Video data 704 (original video data 707 and original video data 707) that can be processed by the video decoding unit 102 after being converted to the redistributed video data 700 by the video redistribution control unit 203 described later for transmission to the video display device 1 via It is a redistributed video receiver that reconverts to the equivalent).
In order to extract the video data 704 that can be processed by the video decoding unit 102 from the video data received from the broadcast receiver 2 via the home network 3, 708 encodes a protocol or video data on the network. This is data format information added to the remote channel selection information 701 in order to notify the broadcast receiving apparatus 2 of information such as the system.

  In FIG. 3, 201 is a tuner unit that extracts a designated channel from broadcast waves received by the antenna 5, and 202 is a network interface unit for connecting to the video display device 1 via the home network 3, and the network interface 103 described above. It has a function to make a pair. A video redistribution control unit 203 converts the video data 707 output from the tuner unit 201 into the redistributed video data 700 for transmission to the video display device 1 via the network interface unit 202. The conversion is performed by the remote channel selection described above. This is executed with reference to the data format information 708 added to the information 701. 204 is a remote for reconverting the information converted into the remote channel selection information 701 by the channel selection control unit 105 into the channel selection information 706 (information equivalent to the channel selection information 702) used for the channel selection process in the tuner unit 201. A tuning control unit.

  FIG. 4 shows that, in this embodiment, when the user 4 selects a channel using the remote controller 7 (selects a weather forecast channel in the figure) for the video display device 1, the video display device 1 is not connected to the antenna. Therefore, the video displayed as a result of the channel selection operation is actually received by the user 4 via the home network 3 and temporarily displayed as a message indicating that the video received by the broadcast receiver 2 is being received and displayed. It is an example of the screen which notifies that it is operating.

FIG. 5 is a diagram for supplementarily explaining the sequence of this embodiment.
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As shown in FIG. 1, a broadcast receiving device 2 connected to an antenna and a video display device 1 not connected to the antenna are connected via a home network 3, and now a user 4 operates the video display device 1 with a remote controller 7. I am trying to watch a broadcast video. This will be described with reference to the sequence diagram of FIG. In the following, (S1) to (S8) show the steps of the sequence of FIG. In the present embodiment, it is assumed that the video display device 1 and the broadcast receiving device 2 have already discovered each other and the network connection process has been completed.

  First, the user 4 turns on the power of the video display device 1 (S1), then the user 4 performs a channel selection operation with the remote controller 7, and the user interface unit 106 outputs the channel selection information 702 to the channel selection control unit 105. (S2). The channel selection control unit 105 that has received the channel selection information 702 confirms whether or not the selected broadcast can be received by its own antenna, using the broadcast reception detection signal 600 output from the tuner unit 103. In this embodiment, since the antenna is not connected, the broadcast reception detection signal 600 indicates that the antenna is not connected (S3). Therefore, the channel selection control unit 105 automatically transmits the channel selection information 702 received earlier to the broadcast receiving apparatus 2 connected via the home network 3 and executes broadcast reception by remote operation.

  At this time, the channel selection information 702 is information originally prepared for channel selection processing by the tuner 103 (for example, the information includes only the channel selection channel number). However, information is insufficient to receive a desired video even if it is transmitted to the broadcast receiving device 2 via the network (for example, the protocol type at the time of video transmission or the video decoding unit 102 can convert the video signal 705) Information such as data format). Therefore, in this embodiment, when the channel selection control unit 105 converts the channel selection information 702 into the remote channel selection information 701, data format information 708 is added (a specific example of addition is DLNA, for example). The tuner's remote tuning and distribution procedures shown can be used (S4).

Next, when the above-described broadcast receiving apparatus 2 receives the remote channel selection information 701 via the home network 3 and the network interface unit 202, the remote channel selection control unit 204 converts the remote channel selection information 701 again into the channel selection information 706, and the tuner unit 201. (S5). Then, the tuner unit 201 takes out the video of the channel specified by the channel selection information 706 from the broadcast wave received by the antenna 5, and outputs this as video data 707 to the video redistribution control unit 203. The video redistribution control unit 203 converts the video data 707 into the redistribution video data 700 according to the data format information 708 described above, and outputs the converted data to the network interface unit 202 by a designated protocol or the like (S6).
When the video display device 1 receives the redistributed video data 700 via the home network 3, the video display device 1 inputs the redistributed video data 700 to the redistributed video receiving unit 107, restores the video data 704, and further inputs this to the video decoding unit 102. Thus, the video signal 705 is obtained, and finally, the video signal 705 is displayed on the video display unit 101 as a broadcast video instructed by the remote controller 7 (S7).

  As described above, according to this embodiment, even if the display device operated by the user is not connected to the antenna, the antenna is connected by connecting the receiving terminal to which the antenna is connected via the network. You can get the same usability even if you don't have an antenna.

  As shown in FIG. 5 and FIG. 4, by presenting to the user 4 that the broadcast video is being remotely received from the broadcast receiving apparatus 2 connected via the home network 3 (S8), the user can view the video. Since the tuner of the device being used can be viewed while being recognized as being in an unusable state, the broadcast video can be viewed on the home network due to some circumstances (for example, lack of resources lent out for remote reception) on the broadcast receiving device 2 side. Even if the video cannot be transmitted via the video display and the video display on the video display device 1 is interrupted, the confusion of the user 4 can be minimized.

  FIG. 6 is a screen displayed on the video display unit 101 according to Example 2 which is the second embodiment of the present invention. In the present embodiment, as in the procedure of the first embodiment, the video display device 1 first receives and displays the broadcast video from the broadcast receiving device 2 via the network, and then the screen is switched to the data broadcast screen, which is related to the weather forecast. Selection of various menus can be made by moving the cursor up and down, and selection buttons (three buttons in the lower row in FIG. 6) for jumping from the weather forecast screen to a different program are provided.

  The data broadcasting screen is composed of a page description language = BML (Broadcast Markup Language) for data broadcasting based on XML (eXtensible Markup Language), developed by ARIB (Radio Industry Association) for digital broadcasting in Japan. ), And display devices equipped with functions corresponding to the standard have four-color buttons of “blue”, “red”, “green”, and “yellow” on the remote control. Correspondingly, it is used as a button for answering a quiz problem and a button for selecting switching to another broadcast channel with one touch. This embodiment corresponds to the latter usage described above.

  FIG. 7 is a configuration diagram of the video display apparatus 1 according to the second embodiment of the present invention. Reference numeral 709 denotes selected color information indicating which of the four color buttons provided on the remote controller 7 is pressed by the user 4 as described above. A browser processing unit 710 is input from the user interface unit 106 related to the data broadcasting screen such as moving, selecting, determining, and canceling the cursor displayed on the data broadcasting screen described along BML. Process the operation that was performed. For example, when the “blue” button shown in FIG. 6 is pressed, the display of the blue button on the screen is described as “leisure program” and the switching destination channel is “111” by BML.

Similarly, the red button is “quiz program” and “channel 222”, and the green button is “news program” and “channel 333”. Therefore, if the user 4 presses the blue button when the data broadcasting screen of FIG. 6 is displayed, the selection color information 709 is “blue”, and the browser processing unit 710 is compared with the BML description as the channel selection information B711. The channel 111 is output to the channel selection control unit 105.
In addition, description of the same code | symbol as Example 1 is omitted.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
Also in the present embodiment, as in the first embodiment, since the antenna of the video display device 1 is not connected, the video display device 1 sends the video of the channel requested by the user 4 to the broadcast receiving device 2, A request is received by the antenna and transmitted to the video display device 1 via the home network 3. As a result, the weather forecast screen shown in FIG. 6 is displayed on the video display unit 101 as described above.

  When the user 4 presses the green button, for example, the channel 333 is input to the channel selection control unit 105 as the channel selection information B711 by the user interface unit 106 and the browser processing unit 710 as described above. Since the reception detection unit 600 indicates that the antenna is not connected, the channel 333 is converted into remote channel selection information 701, which is transmitted to the broadcast receiving device 2 via the network interface unit 104 and the home network 3, and the channel The broadcast receiving apparatus 2 having received 333 adjusts the tuner to the designated channel in the same manner as in the first embodiment, transmits the obtained video to the video display apparatus 1 via the home network 3, and the video display unit 1 performs redistribution. After the video receiver 107 and the video decoder 102, the video display unit 101 It will display the scan program. "

As described above, according to the present embodiment, not only the channel directly designated by the channel button on the remote controller operated by the user but also the switching destination channel is selected on the screen like the data broadcasting screen. In terms of usage, a display device without an antenna can be used as if it had an antenna.
Although not shown in the figure, if a plurality of broadcast receiving apparatuses are on the home network, they may be presented on the user interface so that the user 4 selects one of them, Pairing may be performed in advance, and control may be performed so that a specific broadcast receiving device and video display device are always paired.
In the case of pairing in advance as described above, the power of the broadcast receiving device may be automatically turned on via the home network when the power of the video display device is turned on.
Further, a condition that the antenna is not connected or the reception quality is below a certain level may be added to the above-mentioned ON condition to turn on the power of the broadcast receiving apparatus with good reception quality.

  The same principle can be applied to cooperation with devices other than televisions such as personal computers and recorders that can transmit and receive video over a network in devices that receive broadcasts.

1 is an overview of a system configuration according to Embodiment 1 of the present invention. 1 is a detailed block diagram of a video display apparatus according to Embodiment 1 of the present invention. 1 is a detailed block diagram of a broadcast receiving apparatus according to Embodiment 1 of the present invention. 3 is an example of a display screen according to the first embodiment of the present invention. The processing flowchart concerning Example 1 of this invention. The example of the display screen concerning Example 2 of this invention. The detailed block diagram of the video display apparatus concerning Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Video display apparatus 2 Broadcast receiving apparatus 3 Home network 4 User 5 Antenna 6 Broadcasting station 7 Remote control 101 Video display part 102 Video decoding part 103 Tuner part 104 Network interface 105 Channel selection control part 106 User interface part 107 Redistributed video receiving part 201 Tuner unit 202 network interface unit 203 video redistribution control unit 204 remote channel selection control unit 600 broadcast reception detection signal 700 redistribution video data 701 remote channel selection information 702 channel selection information 703 channel selection video data 704 video data 705 video signal 706 selection Station information 707 Video data 708 Data format information 709 Selection color information 710 Browser processing unit 711 Selection information B

Claims (5)

A video display device,
A connection processing unit for connecting via a home network with a broadcast receiving device comprising a first broadcast receiving means for receiving a broadcast signal from an antenna;
Second broadcast receiving means for receiving a broadcast signal from an antenna;
Broadcast reception detection means for determining whether broadcast reception is possible by checking the presence or absence of an antenna connection or the quality of a broadcast signal received by an antenna;
A data format that can be decoded by the video display device in channel selection information indicating a channel selected by a channel selection operation from a user when the broadcast reception detection unit determines that a broadcast cannot be received from an antenna. Remote tuning information generating means for generating remote tuning information to which data format information describing possible transmission protocols is added;
Remote channel selection means for transmitting the remote channel selection information to the broadcast receiver via a home network;
Redistributed video data obtained by converting video data included in a channel selected from a broadcast signal received by the first broadcast receiving means based on channel selection information in the transmitted remote channel selection information into the data format, Redistributed video receiving means for receiving from the broadcast receiving device via the home network using the transmission protocol;
Display means for decoding the video data included in the broadcast signal received by the second broadcast receiving means or the redistributed video data received by the redistributed video receiving means and presenting it to the user;
When the redistributed video receiving means receives the redistributed video data, channel selection control means for switching the video to be displayed on the display means from the video data to the redistributed video data;
A video display device comprising:   In the video display device, a message is displayed on the display means or the video display device is provided to notify the user that the video currently being presented is being sent from the broadcast receiving device via the home network. The video display device according to claim 1, wherein the lamp blinks. A video display method performed by the video display device,
Connect to the broadcast receiving device that receives the broadcast signal from the antenna via the home network,
Receive broadcast signals from the antenna,
Check whether the antenna is connected or not, and determine whether the broadcast can be received by checking the quality of the broadcast signal received by the antenna. If it is determined that the broadcast cannot be received from the antenna, the channel selected by the channel selection operation by the user is selected. Generating remote tuning information by adding data format information describing the data format that can be decoded by the video display device and available transmission protocols to the tuning information shown,
Transmitting the remote tuning information to the broadcast receiving device via a home network;
Re-distributed video data obtained by converting video data included in a channel selected from a broadcast signal received by the broadcast receiving device based on channel selection information in the transmitted remote channel selection information into the data format, the broadcast receiving device From the home network via the transmission protocol,
Video data included in the broadcast signal, or the redistributed video data is decoded and presented to the user,
Switching the video to be displayed from the video data to the redistributed video data when the redistributed video data is received;
A video display method characterized by the above. A video display system in which a broadcast receiving device and a video display device are connected via a home network,
The broadcast receiving device is:
A first broadcast receiving means for receiving a broadcast signal from an antenna;
The video display device
Second broadcast receiving means for receiving a broadcast signal from an antenna;
Broadcast reception detection means for determining whether broadcast reception is possible by checking the presence or absence of an antenna connection or the quality of a broadcast signal received by an antenna;
When the broadcast reception detecting means determines that the broadcast cannot be received from the antenna, a data format that can be decoded by the video display device can be used for channel selection information indicating the channel selected by the channel selection operation from the user. Remote tuning information generating means for generating remote tuning information to which data format information describing a simple transmission protocol is added;
Remote channel selection means for transmitting the remote channel selection information to the broadcast receiver via a home network;
Redistributed video data obtained by converting video data included in a channel selected from a broadcast signal received by the first broadcast receiving means based on channel selection information in the transmitted remote channel selection information into the data format, and redelivery video receiving means for receiving using the transmission protocol from the broadcast receiving apparatus via the home network,
Display means for decoding the video data included in the broadcast signal received by the second broadcast receiving means or the redistributed video data received by the redistributed video receiving means and presenting it to the user;
When the redistributed video receiving means receives the redistributed video data, channel selection control means for switching the video to be displayed on the display means from the video data to the redistributed video data;
A video display system comprising: In the video display system, the video display device includes a button display displayed on the display means when a channel selection operation from a user is included in a channel selection operation by designating a channel number with a remote controller or the like, or video data. tuning operation by selecting,
The video display system according to claim 4, wherein:

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