JP4109510B2 - Data broadcasting system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data broadcasting system.
[0002]
[Prior art]
In recent years, digital broadcasting has already been put to practical use in BS broadcasting industry such as BS (broadcast satellite broadcasting) and CS (communication satellite broadcasting), and terrestrial broadcasting, which is the current main broadcasting media, is steadily becoming digital. Preparation is progressing.
When we briefly touch on the difference between BS / CS and terrestrial broadcasting, BS / CS broadcasts programs nationwide from one point using artificial satellites, whereas terrestrial broadcasting is usually Broadcasts mixed with local programs. In order to realize this mixed mechanism, a broadcasting network is formed around a master station called a key station so that multiple broadcast stations can supply each other's programs. In addition to the key station, the station other than the key station mixes the program created by the station and the program from the network in accordance with the time schedule and broadcasts it as its own program (hereinafter this method is referred to as net distribution). To do).
[0003]
So far, in addition to the conventional broadcast with moving images and sound, a new data broadcasting service has been started by BS digital. Even in a data broadcasting service, the above-mentioned net distribution is required to start digital terrestrial broadcasting, but a new mechanism is required for the distribution method.
Conventionally, a method has been proposed in which data broadcast content created by a key station is sent to another station in advance via a content distribution network, and the other station broadcasts using the data broadcast content. Yes.
[0004]
Here, there are various data formats of data broadcasting programs. In the following, an example based on a digital broadcasting system defined by ARIB (Radio Industry) as a standard will be described with reference to the drawings. explain.
FIG. 5 is a diagram for explaining a conventional data broadcasting service cooperation method. The data broadcasting service linkage service is performed between the first broadcasting station 1000 which is a key station and the second broadcasting station 2000 which is another station (local broadcasting station located in each region).
[0005]
First, the first broadcast station 1000 will be described. The data broadcast program content 1050 is output from the data broadcast production facility 1001. The data broadcast program content is a collection of all data broadcast program parts necessary for creating a program of one data broadcast service, and the update time and update contents of data in the program are also defined. The data broadcast transmission apparatus 1002 converts the input data broadcast content 1050 into an MPEG-2 transport stream (TS) and outputs a data broadcast program TS1051. The video / audio transmission device 1005 outputs the video / audio program TS1052 converted into the MPEG-2 transport stream. The multiplexing apparatus 1003 multiplexes the input data broadcast program TS1051 and the video / audio program TS1052, and outputs a program TS1053 that is a television program. The broadcast wave transmission facility 1004 converts the input program TS 1053 into a broadcast wave 1054. Eventually, the broadcast radio wave 1054 is broadcast through the broadcast antenna 1006. The viewer's house 1010 receives the broadcast radio wave 1054 through the receiving antenna 1011, and the television receiver 1012 projects the broadcast.
[0006]
Next, the second broadcasting station 2000 will be described. The content management server 2061 receives the data broadcast program content sent from the first broadcast station 1000, and sends the data broadcast program content 2050 to the data broadcast sending device 2002 when the broadcast time comes. Data broadcast program TS2051, video / audio transmission facility 2005, video / audio program TS2052, multiplexing device 2003, program TS2053, broadcast wave transmission facility 2004, broadcast radio wave 2054, broadcast antenna 2006, viewer's house 2010, viewer's house receive antenna 2011 The television receiver 2012 performs the same operation as that of the first broadcast station 1000 and the viewer's house.
[0007]
The content distribution network 2081 is for distributing the data broadcast program content created by the data broadcast production facility 1001 in the first broadcast station to other broadcast stations. The data broadcast program content produced by the production facility 1001 enters the content distribution network 2081 via the first line 2082, and then accumulates in the content management server 2061 of the second broadcast station via the second line 2083. Then, transmission processing is performed as a data broadcasting service of the second broadcasting station.
[0008]
The timing distribution network 2084 distributes timing information such as an event message created by the data broadcast transmission facility 1002 in the first broadcasting station to other broadcasting stations. Timing information generated by the broadcast transmission facility 1002 enters the timing distribution network 2084 via the third line 2085 and is transmitted from there to the data broadcast transmission facility 2002 of the second broadcast station via the fourth line 2086. And used for timing notification during actual broadcasting.
[0009]
Here, a method of program and CM control in the data broadcasting service will be briefly described.
FIG. 6 shows the configuration of a program output from each broadcasting station. The left side shows the program configuration output from the first broadcasting station 1000, and the right side shows the program configuration output from the second broadcasting station 2000. Represents. These correspond to the programs TS1053 and 2053 in FIG. 5, respectively, and are composed of encoded video, audio, and data packet sequences called elementary streams (hereinafter referred to as ES) indicated by bold lines in the figure. Has been.
[0010]
In the configuration of a program broadcast from the first broadcasting station on the left of FIG. 6 (TS1053), video ES3001 and audio ES3002 are ESs that transmit video and audio broadcasts, respectively. The data carousel ES 3003 and the event message ES 3004 are both ESs for transmitting data broadcasting. The data carousel ES 3003 is for transmitting contents used for the data broadcasting service, and the event message ES 3004 is used for the data broadcasting service. This is an ES for sending a signal called an event message to give a trigger (event) to the content to be played.
[0011]
Assume that video ES, audio ES, and data carousel ES are flowing from time t0 to time t3. First, a CM acquisition event message is sent one or more times at an arbitrary time from time t0 to time t1 by event message ES. At this time, when the CM broadcast event message is received on the content side of the data broadcast, CM data of company A is acquired and stored in the memory of the receiver. Then, a CM start event message is sent at time t1. At this time, when the content start side of the data broadcast receives the CM start event message, the CM of company A is displayed, and the display is restored after a certain period of time.
[0012]
The actual operation on the television receiver side at this time will be described. From the time t0 to the time t1, the video and audio of the program and the data related to the program are displayed on the television receiver. Then, the CM starts at the timing of time t1, and from time t1 to time t2, a video related to the CM of company A and data related to the CM are displayed. From the time t2 to the time t3, the video / audio of the program and the data related to the program are displayed again.
[0013]
In the second broadcasting station 2000, information necessary for the data broadcasting service is obtained in advance from the first broadcasting station 1000 through the content distribution network and the timing distribution network, and some contents are changed to those of the own station. Thus, the same data broadcasting service as that of the first broadcasting station can be provided.
[0014]
[Problems to be solved by the invention]
As described above, in the conventional example, even when the same data broadcasting is performed at the first broadcasting station and the second broadcasting station, it is necessary to manage contents separately at each broadcasting station, and the cost for that is large. It becomes a problem for the station management.
The present invention has been made in view of such a problem, and is an effect for facilitating the operation of a station in another station in a system that links data broadcasting from a key station to another station via a network. An object of the present invention is to provide a system that realizes a new method for linking data broadcasting services.
[0015]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a data broadcasting system comprising a first broadcasting device, a second broadcasting device, and a receiver for performing data broadcasting, wherein the first broadcasting device comprises: Broadcasting program content including broadcast data and a display message for informing the timing for displaying the broadcast data to the receiver, and having first data sending means for delivering to the second broadcasting device via the network The second broadcasting device provides the receiver with receiving means for receiving the program content, the received program content, and a program content including a display blocking message informing that the display operation corresponding to the display message is blocked. A second data sending means for broadcasting to the receiver, when the receiver detects the display message after detecting the display prevention message. , And having a function of blocking the operation of displaying the timing showing a broadcast data corresponding display message.
[0016]
With the above configuration, when the data broadcast content is decoded and processed in the receiver, the event message for controlling the net content transmitted to display the module by another station is invalidated, or the own station displays the module. The event message for local content control transmitted to can be made effective. As a result, without changing the data broadcast delivered from the key station to the local station, the display contents of the data broadcast of the net program at the local station can be changed for the local program, or the display of the data broadcast itself is prevented. It becomes possible to do. In this way, since the contents of the data broadcast distributed from the key station to the local station are not changed at all, it becomes possible to control the display of the data broadcast of the key station, so even if the local station performs its own data broadcast It becomes possible to make the operation easy.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a system in which a data broadcast program TS produced by a certain broadcast station is distributed to another broadcast station on the Internet, and the broadcast station receiving the net distribution broadcasts the data broadcast program TS from the own station. By sending a separate control signal from the data broadcasting transmission facility, the data broadcasting program TS distributed on the network can be used as a display of the receiver as viewed from the viewer without any change. The display of an arbitrary data broadcasting module is hidden at an arbitrary timing, and in addition, an effect such as CM replacement can be obtained by displaying a module in the data broadcasting program TS output separately from the data broadcasting transmission facility of the own station. It is a system that enables
[0018]
Hereinafter, embodiments will be described.
FIG. 1 is a diagram for explaining a basic configuration of an embodiment in a data broadcasting system of the present invention.
In FIG. 1, reference numeral 100 denotes the entire broadcasting facility of the first broadcasting station, and since its constituent elements and functions are the same as those corresponding to the conventional example, description thereof is omitted here.
[0019]
Next, the second broadcast station 200 will be described. The data broadcast production facility 201 outputs the data broadcast program content 250. The data broadcast transmission facility 202 converts the input data broadcast content 250 into an MPEG-2 transport stream and outputs a data broadcast program TS251. The video / audio transmission facility 205 outputs the video / audio program TS252 converted into the MPEG-2 transport stream. The multiplexing device 203 includes a data broadcast program TS 151 of the first broadcast station output from the data broadcast transmission facility 102 in the first broadcast station and transmitted through the network line 156, and a data broadcast transmission facility 202 of the second broadcast station. The data broadcasting program TS251 and the video / audio program TS252 of the second broadcasting station outputted from the second broadcasting station are multiplexed, and a program TS253 to be a TV program is outputted. The broadcast wave transmission facility 204 converts the input program TS253 into broadcast radio waves 254. Finally, the broadcast radio wave 254 is broadcast through the broadcast antenna 206. At the viewer's home 210, the broadcast radio wave 254 is received through the receiving antenna 211 at the viewer's home, and the television receiver 212 projects the broadcast.
[0020]
Here, data broadcasting in the embodiment of the present invention will be described. FIG. 2 shows the configuration of a program output from each broadcasting station in the embodiment of the present invention, the left side is the program configuration output from the first broadcasting station, and the right side is output from the second broadcasting station. Represents the program structure. Since the program configuration output from the first broadcasting station is the same as that of the conventional example, detailed description thereof will be omitted here, but the net data carousel ES303 contains program main information and CM of the data broadcasting program. Modules (character modules such as characters and images displayed in a telop form at the receiver) are included, and the main program information and CM module are assumed to be viewed by viewers nationwide. In this example, the receiver that receives the data broadcast of the first broadcast station presents the national broadcast data broadcast service for both the main information and the CM of the data broadcast program.
[0021]
In FIG. 2, the right side shows the program structure output from the second broadcasting station, which corresponds to the program TS253 in FIG. 1, and has already been encoded called ES shown by the bold line in the figure. It consists of video, audio and data packet sequences. In the configuration of the program broadcast from the second broadcasting station (TS253), video ES401 and audio ES402 are ESs that transmit video and audio broadcasts, respectively. In this example, the video / audio output from the video / audio transmission facility of the second broadcasting station is used, but the video / audio transmitted from the first broadcasting station via the network is also used. Good. The net data carousel ES 303 and the net event message ES 304 are two ESs for transmitting data broadcasts, and include the main information of the data broadcast program, the CM module, and various event messages. These are sent as a data broadcast program TS151 from the first broadcasting station through a network for national broadcasting, and are composed of the same modules and event messages as the data broadcasting contents of the first broadcasting station. Yes.
[0022]
Further, the local data carousel ES501 and the local event message ES502 are two ESs for transmitting data broadcasts, and the data broadcast program TS251 of the second broadcast station output from the data transmission facility of the second broadcast station. Is a constituent element.
The local data carousel ES 501 includes a CM module for the second broadcasting station. The CM module for the second broadcasting station is one component that constitutes the data broadcasting CM content of the program, and is assumed to be viewed only by viewers who directly receive the broadcasting of the second broadcasting station, The content of the first broadcast station main program and the CM data ES may not be the same.
[0023]
The local event message ES502 includes a net CM blocking event message and a second broadcasting station as shown in FIG. 2 and FIG. 3 (a diagram showing a time relationship in which each event message is included in the local event message). A local CM acquisition event message and a local CM start event message that trigger data presentation control are included. As the net CM blocking event message, either the net CM start event message or the local CM start event message transmitted by the net event message ES304 (for the whole country) and the local event message ES502 (for the second broadcasting station) is valid. This is trigger information for notifying the receiver of whether or not to perform, and is sent before each CM start event message is sent as shown in FIG.
[0024]
The data broadcast content composed of the net data carousel ES303 and the net event message ES304, the local data carousel ES501 and the local event message ES502 is a script according to the ARIB standard so that the receiver performs the following operation. It is described as a function definition in a language (for example, BML). The outline of the description will be described. The message is composed of a unique identifier (ID) and definition information defining the operation instruction content. The net data carousel includes a display control program that is executed when a predetermined message is received. This program is executed when each message (MSG) is received (hereinafter, stored in the memory of the CM module). And its display) are defined as a function (f (MSG)) in association with each message.
[0025]
In FIG. 3, the display control program and the transmission time zone of each event will be explained. A message ID is assigned to each event message, and the display control program for executing the display control of the CM module is the content of the net data carousel. One is transmitted before or synchronously with the transmission of the net CM blocking event message. The display control program causes the receiver to monitor the transmission of each event message as indicated by an arrow in the figure, and by executing a function defined corresponding to the acquired event ID, The operation is performed.
[0026]
FIG. 4 is a flowchart for explaining the operation in the receiver.
As shown in this figure, when the net data carousel ES303 is received by the receiver (Y in step S1), both the net event message ES304 and the local event message ES502 are always sent according to the description of the program data content included in the ES303. Monitor (step S2). When a net CM acquisition event message is sent by the net event message ES304 (Y in step S3), the net CM carousel ES303 described in the content in the net data carousel ES303 is executed, and the net data carousel ES303 is executed. The CM module is stored in the memory of the receiver (step S4). Thereafter, when a net CM start event message is sent (Y in step S5), if a net CM blocking event message is not sent (N in step S7), it is described in the content in the net data carousel ES303. The contents of the CM module of the net data carousel ES303 are displayed on the screen (step S6; in this example, the CM of company A on the left in FIG. 2).
[0027]
Here, when the net CM blocking event message is sent in the local event message ES502 during a certain period before sending the net CM start event message (Y in step S7), the receiver describes the contents in the net data carousel ES. Thus, the operation for displaying the national CM data corresponding to the net CM start event message is not performed. As such a method, there is a method of setting the net CM start event message to be invalid and ignored when the message is sent. For example, if the display control program is described in a script language, if the function executed when a net CM start event message is received is f (net CM start event message), if a net CM blocking event message is received, As a function that does not execute f (net CM start event message) (such as a function that replaces a function that executes another display process), f ′ (net CM blocking event message) can be defined. As a result, the operation for displaying the net CM module in step S6 is not performed.
[0028]
Then, the following operation is performed in place of the net CM module non-display operation. When a local CM acquisition event message is sent in the local event message ES502 (Y in step S8), the local CM program described in the content in the net data carousel ES303 is executed, and the local data carousel ES501 is loaded. Are stored in the memory of the receiver (step S9). Thereafter, when a local CM start event message is sent in the local event message ES502 (Y9 in step S10), the local CM program described in the content in the net data carousel ES303 is executed in the receiver, and the local CM The contents of the CM module of the data carousel ES501 are displayed on the screen (step S11; in this example, the CM of company B on the right in FIG. 2). The operation control program for displaying the local CM module instead of receiving such a net CM blocking event message is defined as f ′ (net CM blocking) defined as a function that does not execute the f (net CM start event message). Event message) can be defined as a function for storing the memory of the local CM module when a local CM acquisition event message is received as described above, and a display operation when receiving a local CM start event message.
[0029]
As a result, as shown in the right of FIG. 2, in the receiver viewing the program broadcast from the second broadcasting station, even though CM data of company A flows from the network, the second broadcasting The CM data of company B sent out by the station is displayed, and the CM data is replaced.
Next, when a net CM blocking event message is sent in the local event message ES502 in a certain period before the net CM start event message is sent, which event message corresponds to the event message among the sent net CM start event messages. A description will be given of whether or not to perform the operation of displaying the CM module. Several methods are conceivable, but typical examples and the following methods are given.
[0030]
First, an operation corresponding to a net CM start event message detected within a predetermined time (for example, 3 seconds) from when the net CM blocking event message is first detected within a certain period until the next CM broadcast is started. There is a method to prevent execution.
Next, the net CM blocking message and the net CM start event message are associated with one-to-one or one-to-one with a unique ID of the message, and the operation corresponding to the corresponding net CM start event message is executed. The method of not doing is mentioned.
[0031]
Furthermore, there is a method of preventing the operation corresponding to the first detected net CM start event message from being executed within a predetermined time from when the net CM blocking event message is detected until the next CM broadcast is started.
In any of these cases, the net CM blocking event message is continuously sent as shown in FIG. 2 and FIG. 3 in consideration that the time when the viewer starts viewing varies for each viewer. It is desirable.
[0032]
<Others>
The present invention is not limited to the above contents, and the following modifications are also conceivable.
(1) The local CM acquisition event message and local CM start event message of the local data carousel ES 501 may not be sent, but only the net CM blocking event message may be sent. In that case, the CM module is not displayed, and only the video and audio are displayed.
[0033]
(2) The transmission of the net CM acquisition event message, the net CM start event message, the local CM acquisition event message, the local CM start event message, and the net CM blocking event message may be separately sent to separate ESs.
(3) The local CM acquisition event message and the net CM blocking event message can be sent at the same timing, and the same effect can be obtained with either one.
[0034]
(4) In the above example, the replacement has been described using CM data as an example, but this may be program main information.
(5) Although the local data carousel ES501 and the local event message ES502, which are data for the second broadcasting station, have been described as being generated by the second broadcasting station in this example, the second broadcasting station broadcasts, What was generated at the first broadcasting station may be distributed over the Internet and broadcast at the second broadcasting station.
[0035]
(6) The program for preventing the display processing of the net CM module when the net CM blocking event message is received may be any program as long as this operation is executed. .
(7) The local data carousel and the local net carousel may be produced and broadcast by the second broadcasting station as the local station, or the local data carousel and the one produced by the first broadcasting station as the key station are used as they are. It may be distributed to a second broadcasting station via a line and broadcasted.
[0036]
【The invention's effect】
As described above, the present invention is a data broadcasting system that includes a first broadcasting device, a second broadcasting device, and a receiver that performs data broadcasting. And a first data sending means for broadcasting a program content including a display message informing the timing of displaying the broadcast data to the receiver and delivering the program content to the second broadcasting device via the network. The broadcasting apparatus broadcasts to the receiver a receiving means for receiving the program content, the received program content, and a program content including a display blocking message notifying that the display operation corresponding to the display message is blocked. Second data sending means
When the receiver detects the display message after detecting the display blocking message, the receiver has a function of blocking an operation of displaying broadcast data at a timing indicated by the display message.
[0037]
With the above configuration, when the data broadcast content is decoded and processed in the receiver, the event message for controlling the net content transmitted to display the module by another station is invalidated, or the own station displays the module. The event message for local content control transmitted to can be made effective. As a result, without changing the data broadcast delivered from the key station to the local station, the display contents of the data broadcast of the net program at the local station can be changed for the local program, or the display of the data broadcast itself is prevented. It becomes possible to do. In this way, the data broadcasting distributed from the key station to the local station is not changed at all, and the display control of the data broadcasting of the key station becomes possible. Can be easily adjusted
In addition, since a replacement device is not required, a cost merit by reducing the equipment can be expected.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a system configuration in an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of a broadcast station program in the embodiment of the present invention.
FIG. 3 is a diagram showing a time relationship in which each event message is transmitted.
FIG. 4 is a flowchart illustrating an operation in a receiver.
FIG. 5 is a block diagram showing a system configuration of a conventional example.
FIG. 6 is a diagram showing the configuration of a broadcast station program in a conventional example.
[Explanation of symbols]
100 First broadcasting station
101 Data broadcasting production equipment
102 Data broadcasting transmission equipment
103 Multiplexer
104 Broadcast wave transmission equipment
105 Video / audio transmission equipment
106 Broadcast antenna
110 Viewer's house
111 Receiving antenna
112 TV receiver
150 Data broadcasting program content
151 Data broadcasting program TS
152 Video Audio Program TS
153 Program TS
154 Broadcast radio waves
156 Network line
200 Second broadcast station
201 Data broadcasting production equipment
202 Data broadcasting equipment
203 Multiplexer
204 Broadcast wave transmission equipment
205 Video / audio transmission equipment
206 Broadcast antenna
210 Viewer's house
211 Receiving antenna
212 TV receiver
250 Data broadcasting program content
251 Data broadcasting program TS
252 Video / audio program TS
253 Program TS
254 broadcast radio wave
301 Video ES
302 Voice ES
303 Data Carousel ES
304 Event message ES
401 Video ES
402 Voice ES
501 Local data carousel ES
502 Local event message ES

Claims (7)

A data broadcasting system comprising a first broadcasting device, a second broadcasting device, and a receiver for performing data broadcasting,
Wherein the first broadcast system,
Broadcasting program content including broadcast data and a display message for informing the timing for displaying the broadcast data to the receiver, and having first data sending means for delivering to the second broadcasting device via the network ,
The second broadcast unit,
Receiving means for receiving the program content;
Second data transmission means for broadcasting the received program content and the program content including a display blocking message notifying that the display operation corresponding to the display message is blocked to the receiver;
When the receiver detects the display message after detecting the display blocking message, the receiver has a function of blocking an operation of displaying broadcast data at a timing indicated by the display message.   The program content sent by the first data sending means is a display control program that can be executed by a receiver for controlling the display of broadcast data. When a display message is received, the program content is broadcast at the timing indicated by the message. The data broadcasting system according to claim 1, wherein a program for displaying data is included, and the function of preventing the receiver from displaying broadcast data is realized by executing the display control program.   The display control program causes the receiver to monitor the display prevention message and the display message, and when the receiver detects the display message within a predetermined time from the detection of the display prevention message. The data broadcasting system according to claim 2, wherein a display operation that should be originally performed is not performed at a timing indicated by the display message.   The display control program causes the receiver to monitor the display prevention message and the display message, and when the receiver detects the display prevention message, the display control program is associated in advance with the detected display prevention message. 3. The data broadcasting system according to claim 2, wherein when a display message is detected, a display operation that should be originally performed is not performed at a timing indicated by the display message.   The display control program causes the receiver to monitor the display inhibition message and the display message, and when the receiver detects the display inhibition message, the timing indicated by the first detected display message thereafter The data broadcasting system according to claim 2, wherein a display operation that should be originally performed is not performed. A key broadcast apparatus for transmitting program content including broadcast data, a display control program for controlling display of the broadcast data executable by a receiver, and a display message for informing the timing of displaying the broadcast data via a network A local broadcast device receiving from
Broadcast the received program content and the program content including a display blocking message informing the display control program that the display operation corresponding to the display message is blocked;
When the display control program detects the display message after detecting the display prevention message in the receiver, the display control program receives a function of preventing the operation of displaying broadcast data at the timing indicated by the display message on the receiver. A local broadcasting apparatus characterized by being executed by a machine. Program content including broadcast data, a display control program for controlling display of the broadcast data executable by the receiver, and a display message for informing the timing of displaying the broadcast data is transmitted to a local broadcasting device via a network. A key broadcasting device for distribution,
The local broadcasting device broadcasts the received program content and the program content including a display blocking message informing the display control program that the display operation corresponding to the display message is blocked to the receiver ,
In the receiver, the display control program is
When detecting the display message after detecting a display blocking message informing the display control program that the display operation corresponding to the display message sent from the local broadcasting device is blocked,
A key broadcasting apparatus, which causes a receiver to execute a function of preventing an operation of displaying broadcast data at a timing indicated by the display message on the receiver.

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