JP4939881B2 - Video display device, video display method, and video display program - Google Patents

Description

The present invention relates to a video display device, a video display method, and a video display program for receiving and displaying broadcast video data, and more particularly, a message transmitted from a communication terminal connected via a network together with video data. The present invention relates to a displayable video display device, a video display method, and a video display program.

In recent years, the development of AV devices and white goods that can communicate with networks has been progressing. Protocols for controlling such network devices include UPnP (Universa
l Plug and Play) and ECHONET (registered trademark) are standardized.

On the other hand, diversification of contents is progressing. For example, in digital broadcasting, content description language BML (Broadcast Markup Language) for digital broadcasting
By using, services that provide more interactive content than before have begun. In addition, video display devices that receive and display video data broadcast by digital broadcasting and the like have become more sophisticated, network-compatible digital televisions have appeared, and home networks are becoming more popular.

As one of the technologies using these network devices, for example, a communication terminal such as a washing machine or a microwave oven connected via a network is notified of information indicating the end of washing or completion of cooking, and this is used as a television. Technology that is received by a simple video display device, displayed on a screen, and notifies the user of the notification quickly and appropriately is disclosed.

For example, in Patent Document 1, when an abnormality detection device that detects gas leakage or the like is installed in a home and connected to a home network, and the abnormality detection device detects an abnormality, information on the detected abnormality is transmitted to the home network. A technique for displaying on the above television is disclosed.

However, for example, in the related art disclosed in Patent Document 1, whether to display a message notified from another communication terminal is switched depending on the content of video data displayed on a video display device such as a television. I couldn't. In other words, for example, while watching a program such as a drama, there is a problem that a notification that does not require urgency such as “Laundry is finished” is displayed on the TV screen in a very exciting scene regardless of the image. Could have occurred.

Such a problem is also undesirable for the broadcast data transmission side (broadcast content producer, sponsor, etc.). For example, if a message is displayed in a very exciting scene such as a drama, the intention of the producer of the drama or the like is significantly impaired. CM
If a message is displayed during the airing, a problem that the content of the CM is not transmitted to the viewer may occur, which is a big problem for the sponsor.
JP 2005-341544 A (page 6, FIG. 1)

As described above, in the related art, when a message notified from a communication terminal connected via a network is displayed together with broadcast video data, the video data transmission side controls the display of the message. could not.

The present invention has been made to solve the above-described problems of the prior art, and displays a message transmitted from a communication terminal connected via a network together with video data transmitted from a broadcasting station. An object of the present invention is to provide a video display device, a video display method, and a video display program that allow a video data transmission side to set display conditions.

  In order to achieve the above object, a video display device of the present invention is a video display device capable of displaying video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network. First receiving means for receiving broadcast data including video data and first additional information indicating a display condition of a message to be displayed together with the video data; and displaying the video data received by the first receiving means. Display means, second receiving means for receiving a message transmitted from a communication terminal connected via a network, broadcast state specifying means for specifying a broadcast state of video data displayed on the display means, and The display condition indicated by the first additional information corresponding to the broadcast state specified by the broadcast state specifying means is compared with the message received by the second receiving means. Display determination means for determining whether the display means displays the message received by the second reception means together with the video data to be displayed by the display means, and displaying the message by the display determination means. And a display instruction means for instructing to display the message received by the second receiving means together with the video data on the display means in accordance with a display condition indicated by the first additional information. Features.

  The video display method of the present invention is a video display method of a video display device capable of displaying video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network. Receiving broadcast data including data and first additional information indicating display conditions of a message displayed together with the video data, displaying the received video data, and transmitted from a communication terminal connected via a network. The display condition indicated by the first additional information corresponding to the specified broadcast state is compared with the received message. It is determined whether the received message is displayed together with the video data to be displayed on the display means, and the received message is displayed. If it is determined that, and displaying together with the image data in accordance with the display condition indicating the received message is the first additional information.

Also, the video display program of the present invention is a video display program for causing a computer to receive and display video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network. A function of receiving broadcast data including video data and first additional information indicating a display condition of a message displayed together with the video data, a function of displaying the received video data, and a network. A function for receiving a message transmitted from a communication terminal connected in this manner, a function for specifying a broadcast state of the video data to be displayed, and a display condition indicated by the first additional information corresponding to the specified broadcast state; By comparing with the received message, the received message is displayed together with the video data to be displayed. A function for determining whether or not to display the sage on the display means, and when it is determined to display the received message, the received message is displayed together with the video data in accordance with a display condition indicated by the first additional information. It is characterized by realizing the function to be performed.

According to the present invention, video data and a display condition of a message displayed together with the video data are received as broadcast data, and the display of a message transmitted from the communication terminal is controlled using the display condition. On the transmission side, display of a message transmitted from a communication terminal connected via a network can be controlled.

  Hereinafter, embodiments of the present invention will be described.

(First embodiment)
FIG. 1 is a block diagram showing a video display apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram showing a configuration of the entire broadcasting system including the video display apparatus according to the first embodiment of the present invention.

First, the configuration of the entire broadcasting system including the video display apparatus according to the first embodiment of the present invention will be briefly described with reference to FIG.

The video display device 100 according to the first embodiment of the present invention is a television having a function of receiving and displaying broadcast data (broadcast content) transmitted from the broadcast station 500. Here, it is assumed that the broadcast data is transmitted from a broadcasting station by terrestrial digital broadcasting (terrestrial digital broadcasting), and the video display device 100 is a digital television capable of receiving and displaying terrestrial digital broadcasting.

Broadcast data transmitted from a broadcasting station includes video data such as a TV program, BML (
Additional information described in a page description language for data broadcasting such as Broadcast Markup Language (broadcast markup language) is included as a BML document. In the BML document, a space / time control instruction such as where, what and when on the screen on which the video data is displayed is HTML (Hyper Text Mark).
up Language) CS, which is a standard that defines the expression style (layout) of documents
S (Cascading Style Sheets). Alternatively, the script processing description is an E standard that is a standard of Java (registered trademark) Script.
It is described by CMScript.

It should be noted that the display conditions of the message to be displayed together with the video data displayed on the video display device 100 are also described as a BML document and transmitted from the broadcast station together with the broadcast data. Here, the message display conditions are the conditions related to the type of message that can be displayed together with video data (such as the type of communication device that transmits the message and the content of the message), and what kind of message display conditions are displayed together with the video data. This refers to conditions related to the display method, such as whether to display in design (display position, color, size etc.). The display condition is set for each message type. Details will be described later.

In this way, in terrestrial digital broadcasting, broadcast data is transmitted by a transmission method (carousel transmission) in which media data such as video data and a BML document are multiplexed and the same data is repeatedly broadcast at a constant time period. . A digital television such as the video display device 100 always receives broadcast data transmitted from a broadcasting station, but takes out desired content from the broadcast data when the user changes the channel. For example, when broadcast data is transmitted as a program of channel “1” between 19:00 and 20:00, when the user selects channel “1” between 19:00 and 20:00, the BML document included in the broadcast data The interpretation execution of is started.

The video display device 100 is connected to the washing machine 300 and the gas sensor 400 via the home network 200. The video display device 100, the washing machine 300, and the gas sensor 400 each have a function of communicating via a network. As a network protocol for communication, for example, technical specifications for connecting devices such as personal computers, peripheral devices, AV devices, telephones, and home appliances in a home through a network and providing functions (services) to each other. UPnP can be used.

Here, the washing machine 300 and the gas sensor 400 are UPnP-compatible devices, and messages such as “washing end” and “gas leak” are sent to the network 200 as UPnP services.
Via the video display device 100 and other communication devices. The video display apparatus 100 receives messages transmitted from the washing machine 300 and the gas sensor 400 and displays them on the screen together with video data to notify the user of these messages.

Next, the detailed configuration of the video display apparatus 100 according to the first embodiment of the present invention will be described with reference to FIG.

The video display apparatus 100 according to the first embodiment includes a broadcast receiving unit 101 that receives broadcast data (broadcast content) transmitted from a broadcast station, and video data included in the broadcast data received by the broadcast receiving unit 101. A video display unit 102 to display, a message receiving unit 103 that receives a message transmitted from a communication terminal connected via a network, and a message received by the message receiving unit 103 together with video data according to display conditions. A display control unit 104 that performs control to display on the display unit 102 and a message storage unit 105 that stores a message received by the message reception unit 103 are provided.

Next, the operation of the video display device 100 will be described with reference to FIGS. 1 and 3. In addition,
FIG. 3 is a flowchart showing the operation of the video display apparatus 100 according to the first embodiment of the present invention.

Broadcast receiving unit 101 receives broadcast data transmitted from broadcast station 500 (step S).
101). As described above, the broadcast data transmitted from the broadcast station 500 includes video data and a BML document (additional information) multiplexed.

The timing at which the broadcast receiving unit 101 receives broadcast data transmitted from the broadcast station 500 is as follows:
This is the case when the TV is turned on or the channel is changed. For example, when the video display unit 100 is turned on, broadcast data of the channel set at that time is received by the broadcast receiving unit 101.

The additional information included in the broadcast data received by the broadcast receiving unit 101 includes a display condition of a message to be displayed together with the video data as additional information.

FIG. 4 is an example of display conditions. In the example shown in FIG. 4, the display condition is set for each scene (broadcast state) included in the video data. Information specifying the scene of such video data is also included in the broadcast data as additional information described in the BML document together with the display conditions.

In other words, in the example shown in FIG. 4, the scene of the video data is set by dividing the video data by time, and 45 minutes from the start time of the television program included in the video data is “broadcast state 1” from 45 minutes. Up to the end time of the program is set as “broadcast state 2”. In “Broadcasting state 1”, display conditions are set so that both messages transmitted from “washing machine” and “gas sensor” are displayed large in the center of the screen. On the other hand, “Broadcast state 2”
Then, the display condition is set so that the message transmitted from the “gas sensor” is displayed large in the center of the screen and the message transmitted from the “washing machine” is not displayed.

In this way, by changing the display conditions according to the type of message for each scene, for example, the “washing end” from the washing machine 300 is notified 45 minutes after the start of broadcasting, which is generally the most exciting scene in dramas and the like. A message is displayed in the center of the screen, making it possible to prevent the drama atmosphere from being destroyed. On the other hand, from the gas sensor 400,
Since the message notifying “gas leak” is always displayed in the center of the screen, it is possible to reliably notify the user of a highly urgent message.

In the example of FIG. 4, only display conditions for messages from “washing machine” and “gas sensor” are shown. However, messages from other devices (for example, “cooking end” notification messages from “microwave oven” A “call” notification message from the “interphone” or the like. The broadcast station that is the transmission source of the broadcast data may set the display condition for a message that can be assumed in advance and transmit it together with the broadcast data.

The display condition included in the broadcast data received by the broadcast receiving unit 101 is the display control unit 10.
Sent to 4 and stored. The display control unit 104 reads the display conditions stored in this way, determines whether or not to display a message together with video data, and specifies a message display method.

The video display unit 102 displays video data included in the broadcast data received by the broadcast receiving unit 101 (step S102). A user of the video display device 100 views a television program or the like using video data displayed on the video display unit 102.

Next, an operation when a message is notified from the washing machine 300 or the gas sensor 400 on the home network 200 will be described.

The message receiving unit 103 receives a message transmitted from the washing machine 300 or the gas sensor 400 on the home network 200 (step S103). As described above, the washing machine 300 and the gas sensor 400 are UPnP compatible devices, and can notify the device name (FriendlyName) and the device type (DeviceType) by UPnP communication. The message receiving unit 103 is a washing machine 300 that is such a UPnP-compatible device.
And a message transmitted asynchronously from the gas sensor 400. Message is
According to the UPnP specification, HTTP (Hyper Text Transport)
Protocol (format) format header and XML (Extensible Markup)
Language) format text.

When the message receiving unit 103 receives a message, the display control unit 104 first determines whether or not the received message can be displayed together with the video data displayed on the video display unit 102 (step S104). As described above, the washing machine 300 and the gas sensor 4
The message transmitted from 00 is composed of an HTTP format header and XML format text, and the display control unit 104 can know the type of message by analyzing the header and text.

Whether or not the message received by the message receiving unit 103 can be displayed together with the video data is determined by determining whether or not the received message satisfies a display condition corresponding to the video data displayed on the video display unit 102. Is done by doing. That is, the display control unit 104 specifies a scene (broadcast state) of the video data displayed on the video display unit 102 using, for example, a timer, and compares the display condition corresponding to the scene with the received message. Then, it is determined whether or not a message can be displayed together with the video data displayed on the video display unit 102.

For example, in the example shown in FIG. 4, when the message receiving unit 103 receives a “washing end” message from “washing machine” during “broadcasting state 1” (up to 45 minutes from the broadcast start time of the program). The display control unit 104 determines that the received message can be displayed on the video display unit 102 together with the video data. On the other hand, when the message receiving unit 103 receives a “washing end” message from the “washing machine” during “broadcasting state 2” (from 45 minutes after the program starts broadcasting to the program end time), the display control unit 104 Determines that the received message cannot be displayed on the video display unit 102 together with the video data.

When the display control unit 104 determines that the received message can be displayed on the video display unit 102 together with the video data, the display control unit 104 displays the message together with the video data in the video display unit by a display method corresponding to the message. Control is performed so that the information is displayed on 102 (step S105). In FIG. 5, the display control unit 104 and the video display unit 10 together with the video data
FIG. 2 shows an example of a video when a message is displayed.

For example, in the example illustrated in FIG. 4, when the “washing end” message is notified from the washing machine 300 during “broadcast state 1”, the display control unit 104 is displayed on the video display unit 102. The display image is controlled so as to display a large notice at the center of the screen together with the image data.

If the display control unit 104 determines that the received message cannot be displayed on the video display unit 102 together with the video data, the message is stored in the storage unit 105 (step S106).

For example, in the example illustrated in FIG. 4, when the “washing end” message is notified from the washing machine 300 during “broadcast state 2”, the display control unit 104 displays the message together with the video data on the video display unit. The information is stored in the storage unit 105 without being displayed on the display 102. In this way, a message notifying the end of washing from the washing machine 300 is not displayed in the center of the screen after 45 minutes from the start of broadcasting, which is generally the most exciting scene in dramas and the like.

Note that the message stored in the message storage unit 105 without being displayed on the video display unit 102 in this way is read by the display control unit 104 when the scene of the video display unit 102 changes, and the display condition is again displayed. Is determined.

For example, as described above, the display control unit 104 uses the timer or the like to display the video display unit 10.
The scene of the video data displayed in 2 is specified. Then, the message stored in the message storage unit 105 is read when the scene changes. The display control unit 104 can display the message stored in the message storage unit 105 together with the video data displayed on the video display unit 102 in the same manner as when a new message is notified to the message reception unit 103. It is determined whether or not. If the message can be displayed together with the video data, the display control unit 104 controls the display video so that the message is displayed on the video display unit 102 together with the video data. On the other hand, if the message cannot be displayed together with the video data, the display control unit 104 stores the message in the message storage unit 105 again.

In the example shown in FIG. 4, as described above, when a message notifying “end of washing” is transmitted from the washing machine 300 during “broadcast state 2”, the display control unit 104 displays the message as a video display unit. The message is stored in the message storage unit 105 without being displayed on the message 102. Thereafter, the display control unit 104 detects, for example, that the program has ended (the broadcast state has changed) using a timer or the like, and reads the message stored in the message storage unit 105. Then, the display control unit 104 determines whether or not the read message can be displayed together with the video data displayed on the video display unit 102.

For example, for a program that has been newly broadcast, a message notifying that “laundry has been completed” from the “laundry machine” is displayed in the middle of 45 minutes from the start of the broadcast of the program, as in the display conditions shown in FIG. If it is set to “display”, the display control unit 104 controls the display video so that the read message is displayed on the video display unit 102 together with the video data.

By doing in this way, it becomes possible to notify the user of a message that has not been notified to the user as a non-urgent message at a certain timing to the user at another timing. Can be prevented from being overlooked by the user.

As described above, according to the video display apparatus 100 according to the first embodiment of the present invention, broadcast data including video data and display conditions for messages to be displayed together with the video data are received and connected via a network. When a message is received from a designated communication terminal, the video data and the message can be displayed according to the display condition. Therefore, the message display condition on the broadcast data transmission side such as a broadcast station or broadcast content producer is displayed. Can be set.

In the above-described embodiment, as shown in FIG. 4, when a message for notifying “washing end” is received from “washing machine” during “broadcast state 2”, the display control unit 104 The message is not displayed on the video display unit 102 but stored in the message storage unit 105. As shown in FIG. 6, for example, the display condition is set so that the message is “displayed small in the lower right corner of the screen”. It may be set. In this way, by changing the display method such as the display position of the message according to the scene of the video data, for example, in a specific scene of the video data, the atmosphere of the program is impaired, or the video data is hidden by the message, It becomes possible to prevent such a thing from occurring.

The video display device 100 can also be realized by using, for example, a general-purpose computer device as basic hardware. That is, the display control unit 104 can be realized by causing a processor mounted on the computer device to execute a program. At this time, the video display apparatus 100 may be realized by installing the above program in a computer device in advance, or may be stored in a storage medium such as a CD-ROM or distributed through the network. Then, this program may be realized by appropriately installing it in a computer device. The message storage unit 105 is realized by appropriately using a memory, a hard disk, or a storage medium such as a CD-R, a CD-RW, a DVD-RAM, a DVD-R, or the like that is built in or externally attached to the computer device. be able to. The video display unit 102 can be realized by appropriately using a video display device such as a liquid crystal display or a CRT display built in or externally attached to the computer device.

(Second Embodiment)
In the second embodiment of the present invention, the operation of the video display device 100 when an event occurrence notification called a general event message is transmitted from the broadcast station 500 will be described.

Here, the general-purpose event message is message data transmitted asynchronously from a broadcasting station in terrestrial digital broadcasting. For example, as shown in FIG. 7, when a breaking news is inserted in the middle of a certain program, etc. To notify the digital television of the start of breaking news. The general-purpose event message is given identification information called a message ID. The video display device that has received the general event message can identify and distinguish the contents of the individual general event messages by this message ID.

As shown in FIG. 8, the display conditions when the general-purpose event message is transmitted from the broadcast station are included in the broadcast data as additional information together with the display conditions set for each scene of the video data. In the example shown in FIG. 8, together with the display conditions set for each scene of the video data, “Breaking News 3” is set as “Broadcast State 3”, and “Laundry” is set as the message display condition in “Broadcast State 3”. The message notifying “washing end” from the “machine” is not displayed, and the message notifying “gas leak” from the “gas sensor” is set to be displayed large in the center of the screen. When the display control unit 104 receives a message during “broadcast state 3”, the display control unit 104 displays the message on the video display unit 102 (or does not display it) according to such display conditions. Control the video.

It should be noted that the display control unit 104 specifies “Broadcast State 3” “Breaking News Bulletin”
For example, from the time when the broadcast receiving unit 101 receives a general event message from a broadcasting station,
The time until a predetermined time elapses may be specified as “Breaking News News”. For example, since a news bulletin inserted in the middle of a program is generally only a few minutes, the display control unit 104 displays “broadcast state 3” for 10 minutes after the broadcast receiving unit 101 receives a general-purpose event message. ".

Or, if the end of breaking news is notified by a general event message,
The time from when the general-purpose event message representing “breaking news news” is received by the broadcast receiving unit 101 until the next time the broadcast receiving unit 101 receives the general-purpose event message representing “end of news breaking” is expressed as “news “Broadcast state 3” may be specified as “Breaking news”. The general event message can be specified using the message ID given to the general event message as described above.

By doing so, the video display device 100 according to the present invention can communicate on the home network according to the display conditions set by the broadcast data transmission side even when the general event message transmitted from the broadcast station is received. It is possible to control the display of messages transmitted from the device.

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.

1 is a block diagram showing a configuration of a video display device according to a first embodiment of the present invention. The figure which shows the structure of the broadcast system containing the video display apparatus concerning the 1st Embodiment of this invention. 5 is a flowchart showing the operation of the video display apparatus according to the first embodiment of the present invention. The figure which shows an example of the display conditions of the 1st Embodiment of this invention. The figure which shows the example of a display of the image | video of the 1st Embodiment of this invention. The figure which shows an example of the display conditions of the 1st Embodiment of this invention. The figure which shows an example of the display conditions of the 2nd Embodiment of this invention. The figure which shows an example of the general purpose event message of the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Video display apparatus 101 ... Broadcast receiving part 102 ... Video display part 103 ... Message receiving part 104 ... Display control part 105 ... Message storage part 200 ... Home network 300-・ ・ UPnP washing machine 400 ・ ・ ・ UPnP gas sensor 500 ・ ・ ・ Broadcasting station

Claims (9)

A video display device capable of displaying video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network, wherein the display conditions of the video data and the message displayed together with the video data are set First receiving means for receiving broadcast data including first additional information to be displayed, display means for displaying video data received by the first receiving means,
Second receiving means for receiving a message transmitted from a communication terminal connected via a network;
Broadcast status specifying means for specifying the broadcast status of the video data to be displayed on the display means;
By comparing the display condition indicated by the first additional information corresponding to the broadcast status specified by the broadcast status specifying means with the message received by the second receiving means, together with the video data displayed by the display means Display determination means for determining whether or not to display the message received by the second reception means on the display means;
Instructing the display means to display the message received by the second receiving means on the display means together with the video data in accordance with the display condition indicated by the first additional information when the display determining means determines to display the message. And a display instruction means. The apparatus further comprises storage means for storing the message received by the second receiving means when the message received by the second receiving means does not satisfy the display condition indicated by the first additional information. The video display device according to claim 1 . Said display instructing means further when the display condition is satisfied a message stored in the storage means indicated by the first additional information, and instructs the message to display on said display means together with the image data The video display device according to claim 2 , wherein: The display condition is set for each broadcast state included in the video data, and the display instruction unit performs the second reception according to the display condition corresponding to the broadcast state of the video data displayed on the display unit. The video display apparatus according to claim 1, wherein a message received by the means is instructed to be displayed on the display means together with the video data. The broadcast state included in the video data is set by dividing the video data by time, and the display instruction unit is configured to display the second data according to a display condition corresponding to the broadcast state of the video data divided by time. The video display apparatus according to claim 4 , wherein a message received by the receiving unit is instructed to be displayed on the display unit together with the video data. The video display device according to claim 1 , wherein information specifying a broadcast state included in the video data is included in the broadcast data as second additional information. The broadcast data further includes third additional information indicating a message display condition when the first receiving unit receives an event occurrence notification asynchronously transmitted from a broadcast station,
The display instruction means, when the first reception means receives the event occurrence notification, the video data according to the display condition indicated by the third additional information, based on the message received by the second reception means. The video display device according to claim 1, wherein the display unit is instructed to display the image on the display unit. A video display method for a video display device capable of displaying video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network,
Receiving broadcast data including video data and first additional information indicating a display condition of a message to be displayed together with the video data;
Displaying the received video data;
Receives messages sent from communication terminals connected via a network,
Identify the broadcast state of the video data to be displayed,
Whether or not to display the received message together with the video data to be displayed on the display means by comparing the received message with the display condition indicated by the first additional information corresponding to the specified broadcast state Determine
When it is determined that the received message is to be displayed, the received message is displayed together with the video data in accordance with a display condition indicated by the first additional information. A video display program for realizing a function of causing a computer to receive and display video data transmitted from a broadcasting station together with a message transmitted from a communication terminal connected via a network,
A function of receiving broadcast data including video data and first additional information indicating a display condition of a message displayed together with the video data;
A function of displaying the received video data;
A function of receiving a message transmitted from a communication terminal connected via a network;
A function for specifying a broadcast state of the video data to be displayed;
Whether or not to display the received message together with the video data to be displayed on the display means by comparing the received message with the display condition indicated by the first additional information corresponding to the specified broadcast state A function for determining
A video display program that realizes a function of displaying the received message together with the video data in accordance with a display condition indicated by the first additional information when it is determined to display the received message.

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