JP2000092005A - Program transmission system and program receiver for digital broadcasting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transmit data for each program material and to put together and display them on a reception side in a digital broadcasting system. SOLUTION: In this program transmission system 101A, program material data fetched in a material input device 102 are individually stored in a program data storage device 103, then the combination information of the program material data is prepared by a program preparation device 104 and stored in the program data storage device 103 as program data and the program material data and the program data are individually encoded in an encoder 106, multiplexed in a multiplexer 107 and transmitted by a transmitter 108 corresponding to the instruction of a program transmitter l05. On the reception side, the program material data are individually encoded, expanded, put together based on the program data and reproduced. In this case, even in the case of changing the contents of a part of the program material data after program preparation, a part of a program is corrected without affecting the program itself.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast program transmission system for creating and transmitting a program by multiplexing program material data in a digital broadcast, and a digital broadcast program for receiving a digital broadcast program created and transmitted by the system. The present invention relates to a broadcast program receiving device.

[0002]

2. Description of the Related Art In recent years, a broadcasting service using a digitizing technology has attracted attention. For example, at present, digital broadcasting services using CS (Communication Satellite) such as Perfect TV are in operation.

In this type of broadcasting, moving picture data and audio data are individually digitized by a broadcasting station, compressed, multiplexed, and transmitted as broadcast waves. On the receiver side, the multiplexed data is distributed according to each data type, decompressed, and then subjected to reproduction processing.

In this type of broadcasting, moving image data and audio data are scrambled and transmitted in order to broadcast for a fee. The receiver determines whether the reception conditions are satisfied, that is, determines whether the reception fee is paid, and only when the conditions are satisfied, the moving image data and the audio data are descrambled and displayed.

[0005]

However, the above-mentioned conventional digital broadcasting system has the following problems. First, in a digital broadcast program transmission system, at the time of program recording, a plurality of video materials, characters such as telops, background still images, CG, BGM, sound effects, etc., are prepared individually, and the program materials are prepared. And combine each material to create a final program. The created program consists of video data and audio data,
With regard to moving image data, since each program material is synthesized into one image, it is necessary to regenerate the program on the program creation device when attempting to correct a part of the material.

In the digital broadcast program transmission system, scramble processing is performed by transmitting each program or in units of a predetermined time within the program, for example, three minutes after the start of the program. In digital broadcast program receivers,
If the conditions for descrambling are not satisfied, that is, if you are not eligible to receive, a screen that displays the entire screen in a scrambled state or notifies you that you are not eligible to receive without displaying the scrambled screen And so on. For this reason, on the reception screen, either the program is displayed or it is not displayed at all including the scramble state, and only two modes exist as the reception conditions.

[0007] In the digital broadcast program receiving apparatus, determination conditions for program display, such as whether to cancel scramble, are predetermined, and flexible setting such as changing a determination processing method for each program cannot be performed.

The present invention has been made in order to solve the above-mentioned problems, and it is possible to reuse a program material, and to change a display screen according to a viewer level or a viewer's will. It is an object of the present invention to provide a program transmission system and a program receiving device of a digital broadcasting system capable of providing various program providing services.

[0009]

In order to solve the above-mentioned problems, a digital broadcasting system according to the present invention is configured as follows. A digital broadcast program transmission system creates a program data by combining a program material input device that captures program material data used in a digital broadcast program, and program material data captured by the device. A program creation device that determines an attribute value indicating a display position and stores the attribute value as a part of the program data; and a program material data captured by the program material input device and a program data generated by the program creation device. A program data storage device for storing and generating digital broadcast program data for transmission, and the digital broadcast program data stored in the device is converted into reproduction timing data in the program data for each individual program according to a predetermined schedule. A program transmitting device for transmitting program material data based on the program material data; An encoder for compressing separately, and multiplexer for multiplexing the program material data compressed by the encoder, constituted by a transmitter device for broadcasting the multiplexed data in the device.

A digital broadcast program receiving apparatus selectively receives arbitrary program data of a digital broadcast program, and separates multiplexed program material data from the program data. A decoder for decompressing the selected program material data, a program data processing circuit for determining how to combine each of the program material data based on the program data received by the receiving circuit, An image processing circuit for drawing and reproducing by combining the expanded image material data;
An audio processing circuit for reproducing audio material data expanded by the decoder in accordance with an instruction from the program data processing circuit.

That is, in a digital broadcast program transmission system, a plurality of video images constituting a program, characters such as telops, still image of background, program material data such as CG, BGM and sound effects are individually stored, and the program data is stored. Information on how to combine these pieces of program material data is stored as program data, and at the time of transmission, the program material data and program data are individually encoded, multiplexed and transmitted. In a digital broadcast program receiving apparatus, a program material separated and individually encoded at the time of reception is decompressed, synthesized based on program data, and then reproduced. With this configuration, even if a part of the program material data is changed after the program is created, the program itself is not affected, and it is not necessary to recreate the entire program.

In the digital broadcast program transmission system, a reproduction condition for determining reproduction / non-reproduction of arbitrary program material data in the program is set in the program data generated by the program creation device. The digital broadcast program receiving apparatus further comprises a playback condition setting device to be added, wherein the digital broadcast program receiving device further detects, from the program data, a playback condition set in program material data in the program, and based on the playback condition, A reproduction condition determination circuit for determining a reproduction method of the program material data is provided.

That is, in the configuration of the digital broadcast program transmission system, a reproduction condition for deciding whether or not to reproduce the program material in the program receiving device from the program data generated by the program generating device is set. This is added to the program data and transmitted, and the digital broadcast program receiving apparatus determines a method of reproducing the material data based on the reproduction conditions added to the program data. With this configuration, it is possible to set a reproduction condition for each material of a program and to reproduce the material accordingly.

In particular, the playback condition setting device of the digital broadcast program transmission system further includes playback processing specifying means for defining a processing procedure on the receiving side for each playback condition,
The reproduction condition determination circuit of the digital broadcast program receiving device,
When the processing content is defined for each condition in the reproduction condition added to the program data, the method of reproducing the program material data is determined based on the defined processing procedure.

That is, in the playback condition setting device of the digital broadcast program transmission system, a procedure for determining and processing the playback condition is defined, and in the playback condition determination circuit of the digital broadcast program receiving device, the received playback condition processing is performed. According to the procedure, the reproduction condition is determined and the method of reproducing the material data is determined. With this configuration, it is possible to set the reproduction condition determination processing for each program, and it is possible to provide a flexible program providing service.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. (First Embodiment) First, an embodiment of a "mechanism for reproducing a program by encoding and decoding for each program material" of a digital broadcasting system according to the present invention will be described.

FIGS. 1 and 2 show the overall basic configuration of a digital broadcasting system according to the present invention. That is, this system includes a digital broadcast program transmission system 101A (FIG. 1) for creating and broadcasting a program, and a digital broadcast program receiving apparatus 201A (FIG. 2) installed in each home or the like and having a function of receiving a digital broadcast program. .

The digital broadcast program transmission system 101
In A, the program material used in the program is captured by a plurality of or a plurality of types of material input devices 102.
The material input device 102 differs depending on the type of program material. For example, a video camera is used for moving images, a scanner is used for still images, a microphone is used for audio, and a PC is used for characters. Further, the number of the material input devices 102 is not limited. All the fetched program materials are digitized and stored in the program data storage device 103.

On the other hand, the program creation device 104 reads the program material stored in the program data storage device 103,
The program is edited by determining the attribute values (display timing, display interval, vertical relationship between the materials, size, position, etc.) of the program material to be used. These program material attribute values are collectively stored in the program data storage device 103 as program data.

The program sending device 105 sends out programs sequentially according to the broadcast schedule by registering the program data stored in the program data storage device 103 in advance. When the transmission of the program is started, the program data and the program material are transferred to the encoder 106 according to the information of the program data and the schedule determined in sequence.

The encoder 106 has a data type,
For example, dedicated ones are activated according to the types of program data, moving images, still images, sounds, characters, and the like, and sequentially perform encoding processing. The number of activated encoders depends on the number of program materials transmitted at that time. The encoded program data and program material are multiplexed by the multiplexing device 107, and are divided into a plurality of packets by adding a synchronization code and an error correction code by the transmission device 108, and then transmitted as digital broadcast. You. Data transmission paths include not only communication satellites but also terrestrial waves, CATV, broadcasting satellites, telephone lines, the Internet, and the like.

The data transmitted from the digital broadcast program transmission system 101A is received by the digital broadcast program receiver 201A shown in FIG. The data packet demodulated by this reception is subjected to separation processing for each program material, and then sent to the decoder 203.

The decoder 203 is activated in accordance with the type of data, for example, the type of program data, moving image, still image, audio, character, etc., and sequentially performs decoding processing. The number of activated decoders depends on the number of program materials being received at that time. The decoded program data is sent to the program data processing circuit 204. The program data processing circuit 204 is provided with the image processing circuit 20 according to the program data.
5 and an instruction to reproduce the received program material to the audio processing circuit 207.

The image processing circuit 205 performs drawing / reproduction processing in accordance with the instruction of the program data processing circuit 204 so that the designated program material is arranged in the designated position and in a vertical relationship, and displays the same on the screen of the CRT 206. . Similarly, the audio processing circuit 207 performs an audio reproduction process according to the instruction of the program data processing circuit 204 so that the specified program material is reproduced at the specified volume (volume), and outputs sound from the speaker 208. .

As an example, a description will be given based on a program example as shown in FIG. This program example is a scene in which a car and a person are running in a forest. Characters are further displayed on the screen. Synchronizing with the scene, you can hear the sound of cars and the voice of people. Such a program is created as follows.

First, the digital broadcast program transmission system 10
At 1A, the material input device 102 is used to capture the material in the program. In this example, as shown in FIG. 3B, the character information 401, the moving image data 403 of the car and its audio data 402, the moving image data 405 of a person running and its audio data 404, and the still image data 406 of the background forest are captured. .
These program materials are stored in the program data storage device 105.

The program creating device 104 takes in these program materials 401 to 406 and creates program data.
In this case, the time from the start to the end of the program is defined as the absolute time, and the attribute value of each program material is set for each frame unit. For example, the attributes of the still image 406 include a display attribute, a coordinate position with respect to the screen, an enlargement factor, and transparency. The attributes of the character 401 include the font type, font size, font style, character color,
There are background colors. The attributes of the moving images 403 and 405 include a reproduction frame number indicating a reproduction position in addition to the above-described still image attribute. As attributes of the voices 402 and 404,
There are a reproduction attribute (reproduction here indicates “with audio output”, non-reproduction indicates “mute state”), volume, and reproduction frame number.

The display attribute has two values, visible and invisible. The coordinate position attribute is defined in a three-dimensional coordinate system shown in FIG. The Z-axis direction indicates the depth information of the object, and the larger the Z-axis value, the more the object is displayed in front of other objects. A rectangle 501 indicates a display screen area. The enlargement ratio attribute indicates an enlargement ratio for the original data. The transparency attribute indicates the transparency with the background in percentage. Font types include, for example, Mincho and Gothic. The font size is a numerical value indicating the size of a character, and the font style includes standard, bold, italic, and the like. The color is composed of RGB 8-bit values. The frame number is numerical information in which one second is 30 frames. The volume is a numerical value indicating the volume.

FIGS. 3D and 3E show examples of the first and second frames of the program start. In FIG. 6 showing the first frame of the program start, the character 401 is not displayed. In FIG. 7 showing the second frame after the start of the program, the characters 40
1 is displayed, the moving image 402 moves rightward on the screen, and the moving image 405 moves leftward on the screen. At the same time, the attribute value of each material is set so that the volumes of the sound 402 and the sound 404 increase. The program data thus created is generated and stored as a program data file in a format as shown in FIG. 4, for example.

The program sending device 105 reads the created program data file and sets a sending start time and a sending end time to register a program. At this time, the program data file is analyzed, and a transmission schedule and program identification data are generated. For example, in the case of the program shown in FIG. 4, the program identification data shown in FIG. 5 is created. The program identification data is information necessary for receiving a digital broadcast program, and includes a program type 601, a required number of streams 602 indicating the number of encoders and decoders, a type 603 of each stream, an object ID 604, and the like. Created in the described table format.

The transmission schedule is created in the form of a table showing the timing of transmitting each program material. For example, in the case of the program shown in FIG. 4, the transmission schedule table shown in FIG. 6 is created. Generally, the maximum transmission rate (the amount of information that can be transmitted in a certain time) that can be used for transmitting a program is fixedly determined. For example, in the case of this program example, the maximum transmission rate is R0. It is further assumed that audio data and moving image data are also transmitted at a fixed rate.

In order to transmit the program shown in FIG. 4, a fixed-width transmission rate is required for transmitting the audio data 402 and 404 as shown in FIG.
03, 405 also requires a fixed width transmission rate (the transmission rate required for 402 to 405 is R1
And). Furthermore, a fixed-width transmission rate R2 is required to transmit program data, and a fixed-width transmission rate R3 is separately secured to repeatedly transmit program identification data. The reason why the program identification data is repeatedly transmitted is to realize program viewing from the middle. The still picture 406 and the characters 401, which are the remaining program materials, are transmitted in the remaining R4 obtained by subtracting the necessary fixed-width transmission rate from the maximum transmission rate R0.

Here, it is assumed that, for example, it takes two frames to transmit the still image 406 and one frame to transmit the character 401. Assuming that the program start time is t1 in FIG. 6, it is necessary to start transmission from time t0, one frame before that, in order to make the still image 406 ready for display at t1. The still image 406 and the character 401 are transmitted as repeatedly as possible even after being transmitted once. This is the same reason as the transmission of the program identification data.

When the program start time of the registered program data comes, the program transmitting apparatus 105 initializes necessary encoders 106 according to the program identification data, and transfers the data to the respective encoders 106 according to the transmission schedule. For example, in the case of the program shown in FIG. 4, eight encoders 106 are activated from the program identification data of FIG. 5, and the program identification data is transmitted to the encoder 1, the program data is transmitted to the encoder 2, the voice 402 is transmitted to the encoder 3, the voice 404 is transmitted to the encoder 4, The moving image 403 is passed to the encoder 5, the moving image 405 is passed to the encoder 6, the still image 406 is passed to the encoder 7, and the character 401 is passed to the encoder 8, and transmission of the program is started. When the end time of the program comes, program identification data indicating the end of the program is transmitted, and then the processing of each encoder 106 ends.

On the other hand, in the digital program receiving apparatus 201,
The decoder 203 required to receive the program identification data is constantly activated, and the start of the program is monitored.
When the new program identification data is received, a necessary decoder 203 is activated based on the content, and the reception of the program data and the program material is started. For example, in the case of the program shown in FIG. 4, the program identification data of FIG. 5 is received, and a total of eight decoders 203 including the program identification data decoder are generated. In each of the decoders 203, the program identification data is provided to the decoder 1, the program data is provided to the decoder 2, and the audio 40 is provided to the decoder 3.
2, audio 404 for decoder 4, video 40 for decoder 5
3. Moving picture 405 for decoder 6 and still picture 40 for decoder 7
6. The character 401 is input to the decoder 8 and decoded.

The program data and the program identification data are sent to the program data processing circuit 204 and are sequentially analyzed. For example, in the case of the program data of FIG.
6 "is the stream number 7 from the program identification data (the table in FIG. 5). As a result, the program data processing circuit 204 sends the output of the decoder 7 In the same manner, in accordance with the contents of the program data,
The image processing circuit 205 and the audio processing circuit 207 combine the program materials, and the programs as shown in FIGS. 3D and 3E are reproduced.

Therefore, according to the digital broadcasting system having the above configuration, the program can be reproduced by encoding and decoding for each program material. After the program is created, a part of the material data is changed. Even if
The program itself is not affected, and there is no need to recreate the entire program.

(Second Embodiment) Next, an embodiment of a "mechanism for reproducing a program based on reproduction conditions added for each program material" of the digital broadcasting system according to the present invention will be described. This is almost the same as the above-described embodiment of the "mechanism for reproducing a program by encoding and decoding for each program material". Here, the difference will be mainly described.

FIG. 7 shows the configuration of a digital broadcast program transmission system 101B according to the present invention. Here, as is apparent from comparison with the digital broadcast program transmission system 101A shown in FIG.
9 has been added. The playback condition setting device 109 reads the program data file created by the program creation device 104 and sets playback conditions for each program material.
The program data file is updated and the program data storage device 10 is updated.
Save to 5. At this time, the reproduction condition can be set for each frame.

For example, FIG. 3 (d) and FIG.
FIG. 3E shows the first frame of the program start in (e).
In (d), the reproduction condition 1 is set for the moving image 403, and the reproduction condition 0 is set for the remaining program material. In FIG. 3E showing the second frame after the start of the program, the reproduction condition 1 is added to the moving image 403.
Is set for the moving image 405, and the reproduction condition 0 is set for the remaining program material.

The playback conditions set in this way are updated, for example, in the program data shown in FIG. 4 and stored in the form shown in FIG. 8, reference numerals 701 to 712 denote reproduction condition attributes newly set by the reproduction condition setting device 109.

FIG. 9 shows the configuration of a digital program receiving apparatus 201B according to the present invention. Here, as is apparent from comparison with the digital program receiver 201A shown in FIG. 2, a reproduction condition determination circuit 209 is newly added.

In the program data processing circuit 204, the program data is sequentially analyzed. However, if a reproduction condition attribute is set in the program data, the program frame number, the object ID, and the reproduction condition attribute are set in the reproduction condition determination circuit 209. Is forwarded to For example, the data shown in FIG. 10 is transferred from the program data in FIG.

The reproduction condition judgment circuit 209 judges the reproduction condition based on the judgment condition previously stored in the ROM or the like in the receiving apparatus, and gives an instruction to the image processing circuit 205 and the audio processing circuit 207 based on the judgment result. give. For example, as a determination condition, reproduction condition 0: no viewing restriction reproduction condition 1: only viewers at viewing level 1 or higher can view.
Others are scrambled or muted. Reproduction condition 2: Only viewers at viewing level 2 or higher can view.
Others are scrambled or muted. If it is determined, for example, as a result of judging the reproduction condition of FIG. 10, the program created as shown in FIG. 3 (d) and FIG. FIG.
1 (b), and is displayed as shown in FIG. 11 (c) and FIG. That is, at the viewing level 0, the moving image 403 is displayed as shown in FIG.
In FIG. 11B, the scrambled image is displayed, and the moving image 405 is displayed.
Are scrambled only in FIG. 11 (b). At the viewing level 1, the moving image 405 is scrambled in the case of FIG. 11D. In the receiving device of the viewing level 2, all the program materials are displayed without being scrambled as shown in FIGS. 3D and 3E.

Therefore, according to the digital broadcasting system having the above configuration, the transmitting side sets the reproducing condition for determining whether or not to reproduce the program material in the program receiving apparatus and adds the reproducing condition to the program data. Since the method of reproducing the material data is determined based on the reproduction condition added to the program data, it is possible to set the reproduction condition for each material of the program and reproduce the material in accordance with the condition.

In the above example, the image is scrambled and the sound is muted based on the judgment condition, but the judgment condition is not limited to this. For example, the image may be completely hidden without being scrambled. Further, depending on the reproduction condition, the user is required to input a personal identification number on the screen, and for example, the program material is reproduced only when the number input by a remote controller (not shown) matches a preset personal identification number. It can also be used as a so-called child lock function.

(Third Embodiment) Next, a description will be given of an embodiment of a "mechanism for defining a reproduction condition determination process of a program material and reproducing a program in accordance with the definition" of the digital broadcasting system according to the present invention. I do. This is almost the same as the above-described embodiment of the “mechanism for reproducing a program based on the reproduction conditions added for each program material”. Here, the difference will be mainly described.

FIG. 12 shows the configuration of a digital broadcast program transmission system 101C according to the present invention. Here, the digital broadcast program transmission system 101B shown in FIG.
As is apparent from comparison with the above, a reproduction condition determination processing setting device 110 is newly added.

The reproduction condition determination processing setting device 110 reads the program data file updated by the reproduction condition setting device 109, defines the reproduction condition determination processing for each program, and further updates the program data file. The data is stored in the data storage device 103.

As an example, consider a movie program with subtitles composed of program materials such as a moving image 2001, Japanese subtitles 2002, English subtitles 2003, and German subtitles 2004 as shown in FIG.

Normally, as shown in FIG. 13B, only the moving image 2001 is displayed on the reception screen, and no subtitle is displayed. Here, for example, a reproduction condition determination process is defined so that subtitles are displayed according to a state in which the remote controller of the receiving device is pressed.

First, the reproduction condition setting device 109 sets the moving image 2
The reproduction condition of 001 is set to 0, the reproduction condition of Japanese subtitle 2002 is set to -1, the reproduction condition of English subtitle 2003 is set to -1, and the reproduction condition of German subtitle 2004 is set to -1. The reproduction conditions are stored as program data as described above.

Next, the reproduction condition determination processing setting device 110 reads the program data and defines, for example, the following script. Script InitApp () ShowDialogBox (Subtitle broadcast guide: Remote control 1 for Japanese subtitles, Remote control 2 for English subtitles, Remote control 3 for German subtitles) Press the remote control to turn off this display.) End script Script ClickButton (char KeyType) Japanese subtitle. Play condition = -1 English subtitle. Play condition = -1 German subtitle. Play condition =- 1 If KeyType = 1 then Japanese subtitle. Play condition = 0 Elseif KeyType = 2 then English subtitle. Play condition = 0 Elseif KeyType = 3 then German subtitle. Play condition = 0 Else HideDialogBox () End if End script InitApp () is an event executed when this program is started. ClickButton () is an event executed when the remote controller of the receiving device is pressed, and its argument KeyType includes button information of the pressed remote controller. ShowDialogBox () and HideDialogBox ()
Is a function prepared in advance for displaying / hiding a dialog on the receiver screen.

This reproduction condition determination processing data is incorporated in the program data as shown in FIG. 14, for example. In this example, the reproduction condition determination processing 8 is performed only once at the beginning of the program data.
01 is incorporated, but the same playback condition determination processing may be incorporated in each frame unit so that the viewer can participate in the middle.

The configuration of the digital program receiving apparatus in this case is the same as the content shown in FIG. Therefore, illustration of the drawings is omitted. However, in the reproduction condition determination circuit 209,
Although not shown in detail, a memory for storing data sent from the program data processing circuit 204 and a CPU for processing a script stored in the memory in a predetermined procedure are provided.

In the program data processing circuit 204, the program data is sequentially analyzed, and if the playback condition determination process attribute and the playback condition attribute are set in the program data, the playback condition determination process attribute, the program frame number, the object I
D, the reproduction condition attribute is extracted and transferred to the reproduction condition determination circuit 209. For example, the data shown in FIG. 15 is transferred from the program data in FIG.

When the reproduction condition judgment circuit 209 receives the reproduction condition judgment attribute, it performs processing according to the procedure shown in FIG. 16, for example. First, as shown in FIG. 16A, an event S1 executed when a program is started is issued. In the program start event S1, a defined dialog display process S13 is executed. As a result, on the CRT screen of the receiving device, as shown in FIG.

Next, in FIG. 16A, the state of various events is monitored (S2), and when the remote control is pressed (S3), an event S4 is issued. In event S4 called when the remote controller is pressed, as shown in FIG. 16C, the reproduction attribute value of each subtitle is initialized to "-1" (S5), and the pressed remote controller key is determined (S5). S6,
S7, S8). If the remote control key is "1", the reproduction attribute value of the Japanese subtitle is set to "0" (S10). Similarly, when the remote control key is "2", the reproduction attribute value of the English subtitle is set to "0" (S11), and the remote control key is set to "3".
In the case of, the reproduction attribute value of the German subtitle is set to “0” (S12). The playback attribute value set here is, for example, "-1" means non-display, and "0" means display. Finally, the operation explanation dialog box is set to non-display, and the operation explanation is erased from the receiver screen (S9).

Subsequently, an instruction is given to the image processing circuit 205 and the audio processing circuit 207 based on the reproduction attribute. As a result, when the reception of the program is started, an explanation as shown in FIG. 17 (a) is displayed, and the viewers receive "1" and "2".
When a remote control button other than “3” is pressed, the description disappears as shown in FIG. Further, when "1" on the remote control is pressed, Japanese subtitles are displayed as shown in FIG. 17C, and when "2" on the remote control is pressed, the Japanese subtitle is displayed.
English subtitles are displayed as shown in (d), and pressing "3" on the remote control causes German subtitles to be displayed as shown in FIG. 17 (e).

Therefore, according to the digital broadcasting system having the above configuration, a procedure for determining and processing the reproduction condition on the transmission side is defined and added to the program data, and the reproduction condition processing added to the program data on the reception side is determined. Since the reproduction condition is determined according to the procedure and the method of reproducing the material data is determined, the reproduction condition determination process can be set for each program.

[0061]

As described above, according to the present invention, in a digital broadcast program transmission system, a plurality of videos constituting a program, characters such as telops, background still images and C
By separately storing and transmitting program material data such as G, BGM, and sound effects and program data such as how to combine these program material data, the contents of a part of the program material can be influenced on the program itself. It can be changed without giving. Further, since the materials of the program are also stored individually, the materials can be reused.

Further, by adding the program reproduction conditions for each program material, it is possible to change the contents of the program according to the reception conditions. For example, it is possible to provide a service that displays an image scrambled for each material or changes the content displayed on the screen according to the subscription level of a pay channel.

Further, by defining and transmitting the reproduction condition judgment processing of the program material, the reproduction condition can be set for each program. For example, the type of the movie subtitle can be selected from English, Japanese, and German. Viewers choose anything,
Such a service becomes possible.

As described above, the program material can be reused.
Further, a display screen can be changed according to a viewer level or a viewer's will, and a program transmission system and a program receiving device of a digital broadcasting system capable of providing a flexible program providing service can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of a digital broadcast program transmission system of a digital broadcast system according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a basic configuration of a digital broadcast program receiving device of the digital broadcast system according to the first embodiment.

FIG. 3 is an exemplary view for explaining a screen example of a digital broadcast program and its program material displayed on the program receiving device in the first embodiment.

FIG. 4 is a diagram showing an example of a program data file structure in the first embodiment.

FIG. 5 is a diagram showing an example of the structure of program identification data in the first embodiment.

FIG. 6 is a diagram for explaining a method of determining a transmission schedule in the first embodiment.

FIG. 7 is a block diagram showing a basic configuration of a digital broadcast program transmission system of a digital broadcast system according to a second embodiment of the present invention.

FIG. 8 is a diagram showing an example of a data structure in which reproduction conditions are added to program data in the second embodiment.

FIG. 9 is a block diagram showing a basic configuration of a digital broadcast program receiving device of a digital broadcast system according to a second embodiment.

FIG. 10 is a diagram showing an example of a data structure sent to a reproduction condition determination circuit in the second embodiment.

FIG. 11 is a diagram showing an example of a screen of a program according to a viewing level in the second embodiment.

FIG. 12 is a block diagram showing a basic configuration of a digital broadcast program transmission system of a digital broadcast system according to a third embodiment of the present invention.

FIG. 13 is a diagram showing an example of a program material captured by a material input device and an example of a digital broadcast program screen displayed by a program receiving device in the third embodiment.

FIG. 14 is a diagram showing an example of a data structure in which reproduction condition determination processing is added to program data in the third embodiment.

FIG. 15 is a diagram showing an example of a data structure sent to a reproduction condition determination circuit in the third embodiment.

FIG. 16 is a flowchart showing a processing procedure in a reproduction condition determination circuit according to the third embodiment.

FIG. 17 is a diagram illustrating an example of a digital broadcast program screen displayed at the start of program reception in the program receiving apparatus according to the third embodiment, in which a remote control button other than “1”, “2”, and “3” is pressed on the program receiving apparatus; The figure which shows the example of a screen of the digital broadcast program displayed at the time of it.

[Explanation of symbols]

101A, 101B, 101C Digital broadcast program transmission system 102 Material input device 103 Program data storage device 104 Program creation device 105 Program transmission device 106 Encoder 107 Multiplexer 108 Transmission device 109 Reproduction condition setting device 110: Playback condition determination processing setting device 201A, 201B: Digital broadcast program receiving device 202: Receiving circuit 203 ... Decoder 204 ... Program data processing circuit 205 ... Image processing circuit 206 ... CRT 207 ... Audio processing circuit 208 ... Speaker 209 ... Playing condition Judgment circuit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/24 H04N 7/13 Z

Claims (6)

[Claims] 1. A program material input device for capturing program material data used in a digital broadcast program, and program data created by combining the program material data captured by the device, at least a reproduction timing and a display position of each material data. A program creation device that determines an attribute value indicating the program data and stores the program data as a part of the program data, and stores the program material data captured by the program material input device and the program data generated by the program creation device. A program data storage device for generating digital broadcast program data for transmission, and a program for storing the digital broadcast program data stored in the device on a predetermined schedule based on the reproduction timing data in the program data for each individual program. A program transmission device for transmitting material data, and an engine for individually compressing program material data transmitted by the device. A digital broadcast program transmission system, comprising: a coder; a multiplexing device that multiplexes each program material data compressed by the encoder; and a transmitting device that broadcasts the data multiplexed by the device. 2. A reproduction condition setting device for setting and adding reproduction conditions for determining reproduction / non-reproduction of arbitrary program material data in the program to the program data generated by the program creation device. The digital broadcast program transmission system according to claim 1, wherein: 3. The digital broadcast program transmission system according to claim 2, wherein said reproduction condition setting device further comprises reproduction processing specifying means for defining a processing procedure on the receiving side for each reproduction condition. 4. A receiving circuit for selectively receiving arbitrary program data of a digital broadcast program and separating multiplexed program material data from the program data; A decoder for decompressing, a program data processing circuit for deciding how to combine each of the program material data based on the program data received by the receiving circuit, A digital broadcast program receiving apparatus, comprising: an image processing circuit that performs drawing and reproduction in combination; and an audio processing circuit that reproduces audio material data expanded by the decoder in accordance with an instruction from the program data processing circuit. 5. A reproduction condition determination circuit for detecting a reproduction condition set in program material data in the program from the program data and determining a reproduction method of the program material data based on the reproduction condition. The digital broadcast program receiving device according to claim 4, further comprising: 6. When a processing procedure is defined for each condition in a playback condition added to the program data, the playback condition determination circuit performs a playback method of program material data based on the defined processing procedure. The digital broadcast program receiving device according to claim 5, wherein the determination is made.