JP2000307529A - Broadcast management device, recording medium and transmitting method of program data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select program data in order from the highest transmission priority and to transmit them while they are time-divisionally multiplexed by controlling a program data state in accordance with broadcast time information and selecting/transmitting program data in accordance with priority information among program data in a transmission possible state. SOLUTION: At the time of broadcasting video data of a base band, which is transmitted from a video camera and a vides server as a real time program, a content production device 11 transmits it to a broadcast management device 13 at the time of broadcasting it as a real time program and transmits it to authoring terminal equipment 12 at the time of broadcasting it as an accumulative program. Recording video sound data and other digital data are compiled and worked and content data is generated. Content data is stored in the content storage part of the broadcast management device 13. Program data constituting a program supplied to a viewer is decided by information on program organization, a stream based on data is generated and is transmitted to a transmission part 14. Program data is converted into the signal of a transmission line adaptation type and is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to digital broadcasting system technology.

2. Description of the Related Art In recent years, digital broadcasting services have been put to practical use. In digital broadcasting services, programs such as television broadcasts and data broadcasts are digital data bit strings (streams) obtained by encoding video data and audio data.
Is delivered to the viewer's receiving terminal device via a predetermined transmission path, and the received stream is decoded by the receiving terminal device and output as video, audio, or the like. MPEG2 is known as a technique for realizing such a digital broadcasting service.

[0002] In MPEG2, a transport stream for transmitting a plurality of streams in a time-division multiplex manner and transmitting the streams is defined. This allows for multiple programs (typically 4 programs).
(About 8 programs) can be transmitted in one transmission band.

By the way, the broadcasting form of the program provided to the viewer includes a real-time type program and a storage type program. A real-time program is output as video and audio by reproducing a stream transmitted in time series from a broadcasting station in real time.
On the other hand, the storage-type programs are each configured as a file, and the streams transmitted in chronological order from the broadcasting station are stored in the receiving terminal device, and when the storage is completed as a complete file, the video is displayed. And it can be used as audio. In other words, the storage-type program can be viewed only after the download of the files constituting the program is completed. Therefore, for example, when it takes 30 minutes to download a file that constitutes a program, the viewer cannot enjoy the service until 30 minutes have elapsed after selecting the program. In such a case, for example, if the channel selection time is only 2 minutes, the user can view the text-only digest information of the real-time program while viewing the program for 2 minutes, If 15 minutes have elapsed without changing the URL, if the user can enjoy the provision of the program according to the reception time, such as viewing the digest information including the still image data,
Very convenient for viewers.

[0003] It is therefore an object of the present invention to provide a broadcasting technique that enables the receiving terminal device of a viewer to enjoy providing a program according to the reception time of a stream.

Means for Solving the Problems In order to solve the above problems, the present invention is specified as follows.

That is, the present invention relates to a broadcast management apparatus for managing transmission of program data constituting a program, wherein the state of the program data is controlled in accordance with information relating to the broadcast time, and the state is set such that transmission is possible by the control. A broadcast management apparatus for selecting and transmitting program data from the program data according to the information on the priority.
The selected program is time-division multiplexed by the encoding means and transmitted (transmitted) in a predetermined transmission band.

[0005] As a result, the program data in a transmittable state are sequentially selected in descending order of transmission priority.
The data is transmitted while being time-division multiplexed.

Here, it is preferable that the broadcast management device repeatedly transmits the selected program data according to information on the number of times of repeated transmission. It is preferable that the information on the number of repetitive transmissions indicates the maximum number of repetition transmissions and / or the minimum number of repetition transmissions. As a result, the selected program data is transmitted for the number of repetitions equal to or more than the minimum number of repetitions and equal to or less than the maximum number of repetitions.

Further, it is preferable that the broadcast management device transmits the selected program data when it is determined that the selected program data has passed a predetermined repetition transmission time. Thus, even if the program data is selected according to the information on the priority, the program data is not transmitted unless the repetitive transmission time has elapsed.

Further, it is preferable that the broadcast management device obtains the repetition transmission time based on the information on the broadcast time and the information on the repetition transmission count (maximum repetition transmission count).

[0009] Preferably, the broadcast management device transmits another program data selected according to the information on the priority during the repeated transmission time.

[0010] Further, it is preferable that the broadcast management device sends the selected program data to a predetermined transmission band in accordance with information on a transmission capacity. Here, the information relating to the transmission capacity indicates a transmission capacity at which the program data can secure a predetermined transmission band. Thereby, the specific program data occupies (reserves) all of the predetermined transmission band.
Can be avoided.

It is preferable that the broadcast management apparatus temporarily suspends transmission of the program data being transmitted according to the information on the occupation time. Thus, it is possible to avoid a situation in which specific program data having a high priority occupies a predetermined transmission band.

Further, according to the present invention, control information (control data) for controlling a broadcast management device for managing transmission of program data is provided.
Also holds as a recording medium on which is recorded. Specifically, the present invention is a recording medium that records control information associated with program data, wherein the control information has information about a broadcast time and information about a priority, and the information about the broadcast time is: The control unit controls the transmission state of the program data, and the information on the priority is such that the program data set to be in a transmittable state by the control is selected in a priority order indicated by the information on the priority. The recording medium may be a recording medium on which control information is recorded.

The present invention is also realized as a recording medium on which a program for causing a computer to realize a predetermined function is recorded. Specifically, the present invention relates to a recording medium recording a program for realizing a function for causing a computer to manage transmission of program data constituting a program, wherein the program is associated with each program data. State control means for controlling the state of the program data according to information on the broadcast time in the control information,
Selection control means for sequentially selecting program data from the program data set in a transmittable state by the state control means in accordance with the priority information in the control information and controlling transmission of the program data; May be a recording medium recording a program characterized by the following.

Here, the recording medium is, for example, a hard disk (HD), a DVD-RAM, a flexible disk (FD), a CD-ROM, etc.
Includes memory such as OM. Also, the computer is
For example, it includes a so-called microcomputer or the like in which a so-called central processing unit such as a CPU or an MPU performs a predetermined process by interpreting a program.

[0015] The invention of the above-mentioned object is also realized as an invention of a method, and the invention of the method is also realized as an invention of an object.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic functional configuration of a broadcasting system according to the present embodiment. As shown in FIG. 1, the broadcasting system according to the present embodiment receives a broadcast station 1 that distributes (broadcasts) various programs as streams to each viewer, receives a stream distributed from the broadcast station 1, A plurality of receiving terminal devices 2 that output voices or other expression forms
(Only one is shown in the figure).

The broadcasting station 1 includes a content production device 11, an authoring terminal device 12, a broadcast management device 13, and a transmission device 14. When broadcasting the baseband video / audio data transmitted from a video camera, a video server, or the like (not shown) as a real-time program, the content production device 11 transmits the baseband video / audio data to the broadcast management device 13 and broadcasts it as a storage-type program. Authoring terminal device 12
To send to. Alternatively, the authoring terminal 12
Transfer to. The authoring terminal device 12 is for editing and processing recorded video / audio data and other digital data to create content data. The authoring terminal device 12 may create the content data by extracting a part of the data constituting the recorded video / audio data as needed. For example, when the original video / audio data includes moving image data, specific frames (still image data) constituting the moving image data are cut out and combined to create content data. The content data created by the authoring terminal device 12 is stored in the content storage unit of the broadcast management device 13. The broadcast management device 13 determines program data constituting a program to be provided to a viewer according to information on program organization, generates a stream based on the program data, and sends the stream to the transmission device 15. Further, when generating the stream, the broadcast management device 13 uses the reception terminal device 2
The information for controlling the operation of is superimposed. The details of the broadcast management device 13 will be described later. Transmission device 1
5 is a program data transmitted from the broadcast management device 13,
The signal is converted into a signal in a format (for example, a packet format or a section format) suitable for a transmission path, and transmitted to, for example, a broadcasting satellite.

The receiving terminal device 2 includes a receiving unit 21, a reproduction control unit 22, a stream data storage unit 23, an output unit 24, an input unit 25, and an input control unit 26. Receiver 21
Selects (receives) a multiplexed stream corresponding to a desired broadcast channel from broadcast waves distributed from the broadcast station 1 via a broadcast satellite or the like, demodulates the multiplexed stream, and sends out the demodulated stream to the reproduction control unit 22. That is, the receiving unit 21 performs a process corresponding to the transmitting unit 14. The reproduction control unit 22 controls reproduction and accumulation of the stream based on the reproduction control information included in the stream transmitted from the broadcast station 1. The stream data storage unit 23 temporarily stores a stream constituting a storage-type program and a stream constituting a real-time type program to which a recording instruction is given. Stream data storage unit 2
3 is realized by, for example, a RAM, an HD device, a DVD-RAM device, or the like. The output unit 24 typically includes a display unit 24a and an audio output unit 24b. The output unit 24 outputs the stream reproduced by the reproduction control unit 22 as video and audio, respectively. Input unit 25
Is an input interface for a viewer to input operation instruction information, and is realized by, for example, an infrared remote controller, an operation panel, or the like. The input control unit 26 includes the input unit 25
For example, various controls such as channel selection are performed based on the operation instruction information input from.

In the present embodiment, the stream from the broadcasting station 1 to the receiving terminal device 2 is distributed by a broadcasting satellite, but the present invention is not limited to this. For example, distribution by a communication satellite may be used. Instead of satellite broadcasting, terrestrial broadcasting or so-called cable television broadcasting may be used. The point is that the predetermined stream may be transmitted from the broadcast station 1 to the receiving terminal device 2 of the viewer.

FIG. 2 shows a broadcast management apparatus 1 according to this embodiment.
FIG. 3 is a diagram showing the details of Example No. 3; The broadcast management device 13 according to the present embodiment generates a stream to be distributed to a viewer by appropriately selecting a program to be broadcast based on control information associated with each piece of program data, and multiplexes the stream in a time-division multiplexing manner. Become

In FIG. 1, a control information input unit 201
This is for inputting control information. The control information is for controlling the program data to be distributed to the viewer according to the broadcast composition plan (broadcast schedule) and for controlling the stream distributed to the viewer. The control information input by the control information input unit 201 is stored in the control information storage unit 202.

FIG. 3 is a diagram showing an example of the control information.
As shown in the figure, the control information includes transmission control information for controlling a program in the broadcast management device 13 of the broadcast station 1, and
Playback control information for controlling the program data in the playback control unit 22 of the receiving terminal device 2.

The "transmission start time" indicates the time at which the transmission of the program data may be started, and the "transmission end time" is information indicating the time at which the transmission of the program data must be terminated. In other words, the period from "transmission start time" to "transmission end time" means that the program data can be transmitted.

The "transmission priority" indicates the priority of transmission of the program data. That is, the "transmission priority" is for transmitting the program data in descending order of priority when there are a plurality of pieces of program data in a transmittable state. In the present embodiment, it is assumed that the smaller the value of “transmission priority” (the minimum value is 0), the higher the priority.

The "maximum transmission capacity" indicates a transmission capacity that allows a stream based on program data to occupy the maximum transmission bandwidth.

The "minimum transmission capacity" indicates a transmission capacity for which a stream based on program data must secure a minimum transmission band.

The "execution right relinquish time" indicates the effective transmission time of one program data transmission. In other words, when the transmission time of the program data being transmitted exceeds the "execution right abandonment time", the transmission of the program data being transmitted is forcibly interrupted, and the transmission is switched to the transmission of the next program data to be transmitted. .

The "priority change" is information used when it is necessary to change the priority while transmitting program data. For example, it is used when transmitting data that must be transmitted continuously in time, such as an audio stream or a series of change stop buttons.

"Effective period" indicates a period during which a program can be transmitted. For example, it is information for controlling a program including a content whose content becomes inappropriate if the broadcast time is shifted.

The "minimum number of repetitions" indicates how many times the program data is to be repeatedly transmitted, and the "maximum number of repetitions" indicates how many times the program data is to be repeatedly transmitted. That is, the program data is repeatedly transmitted for the number of times between the minimum number of repetitions and the maximum number of repetitions. The number of repetitions at this time is dynamically changed according to the available state of the transmission band.

Returning to FIG. 2, control information adding section 203 adds control information (reproduction control information) read from control information storage section 202 to the content data read from content storage section 102. The content data to which the control information is added is sent to the program data generation unit 204.
The program data generation unit 203 generates program data based on the content data to which the control information has been added, and sends it to the program data storage unit 205. In this case,
It is preferable that the program data generation unit 203 performs a compression process on the content data as necessary. For example, in order to generate program data of the same program but different service qualities, the program data generation unit 203 performs compression processing such as changing the sampling rate, decreasing the number of pixels, and decreasing the encoding width.

The transmission management section 206 manages transmission of program data based on control information so that a viewer can view a program in accordance with information on program organization. That is,
The transmission management unit 206 monitors the time indicated by the station clock (not shown), and when the time counts the “transmission start time”, connects the program data to the transmission data selection unit 207. The transmission management unit 206 separates the program data from the transmission data selection unit 207 when the time indicated by the station clock has counted the “transmission end time”.
Further, the transmission management unit 206 deletes the program data from the program data storage unit 205 when the time indicated by the station clock has counted the “valid period”. In the present embodiment, a plurality of pieces of program data may be transmitted in a time-division multiplexed manner. Therefore, there may be a plurality of pieces of program data connected to the transmission data selection unit 207. Transmission management unit 20
6 selects the program data having the highest “transmission priority” among the program data connected to the transmission data selection unit 207, and determines the program data in the transmission band (transport stream) based on the “minimum transmission capacity” of the program data. Calculate the free transmission capacity. For example, if one transmission band is 24
If the transmission capacity is Mbps and the minimum transmission capacity of the selected program data is specified as 22 Mbps, the free transmission capacity is 2 Mbps. The transmission management unit 206 notifies the transmission data selection unit 207 of the selected program data.

The transmission data selection unit 207 includes the transmission management unit 2
06, the selected program data is transferred to the encoder 2
08. In this case, the transmission data selection unit 207
Is transmitted to the MPEG encoder 208a if it is program data based on baseband video / audio data, and is transmitted to the data encoder 209 if it is program data based on content data. The MPEG encoder 208a encodes (compresses) the transmitted program data to generate a stream. In the present embodiment, MP
The EG encoder 208a converts the video data and audio data constituting the program data into MPEG data at a predetermined compression rate (bit rate) while maintaining their synchronization.
It shall be coded according to 2 video and MPEG2 audio. The compression ratio is dynamically determined according to the contents of the program data. For example, in the case of program data that includes many complex images, the compression ratio is low. The encoder 208 sends the generated stream to the multiplexer 209. The multiplexer 209 packetizes each stream sent from the encoder 207,
Furthermore, one multiplexed stream is generated by time division multiplexing.

Next, the processing operation of the transmission management unit 206 will be described. FIG. 4 is a diagram for explaining the overall operation of the transmission management unit 206. That is, as shown in FIG. 4, the transmission management unit 206 includes a process of managing the state of program data (STEP 401) and a process of selecting program data to be transmitted and controlling its transmission (STEP 402). The transmission management unit 206 repeats the above processing until the broadcast ends (STEP 403). Hereinafter, the details of each process (STEP 401 and STEP 402) will be described.

FIG. 5 is a detailed diagram of STEP 401 shown in FIG. As shown in FIG. 5, the transmission management unit 206
With reference to the control information stored in the control information storage unit 202,
It is determined whether there is any program data that has reached the “transmission start time” (STEP 501). If the transmission management unit 206 determines that there is program data that has reached the “transmission start time”, the transmission management unit 206 connects the program data to the transmission data selection unit 207 (STEP 502) and calculates the transmission interval of the program data. (STEP 503). The transmission interval is calculated based on “transmission start time”, “transmission end time”, and “maximum number of repetitions”. This transmission interval is for preventing the program data from being transmitted with the interval shortened more than necessary when the program data is repeatedly transmitted. Next, the transmission management unit 206 determines whether there is any program data that has reached the “transmission end time” (STEP 504), and disconnects the program data that has reached the “transmission end time” from the transmission data selection unit 207. (STEP 505). And the transmission management unit 2
06 determines whether there is any program data that has reached the “expiration date” (STEP 506), and deletes the program data that has reached the “expiration date” from the program data storage unit 205 (STEP 506).
EP 507). As described above, the transmission management unit 206 manages the transmittable state of the program data to be transmitted based on the control information, and selects and transmits the next program data (STE).
P402).

FIG. 6 is a detailed diagram of STEP 402 shown in FIG. As shown in FIG. 6, the transmission management unit 206
First, program data having the highest transmission priority is selected from the program data connected to the transmission data selection unit 207 (STEP 601). The transmission management unit 206 determines whether or not the selected program data can be transmitted (S
TEP602). That is, the transmission management unit 206 determines whether or not the current available transmission capacity of the transmission band is larger than the “minimum transmission capacity” required for transmitting the program data. If the transmission management unit 206 determines that the transmission capacity required for transmitting the program data can be secured, it determines whether the number of repeated transmissions of the program data has reached the “maximum number of repetitions” (STEP 603). ). Also,
If the transmission management unit 206 determines that the number of repetitive transmissions of the program data has not yet reached the “maximum number of repetitions”, the transmission management unit 206 determines whether it is within the transmission interval calculated in STEP 503 (STEP 604). . If it is determined that the program data is to be transmitted at a distance longer than the calculated transmission interval, the transmission management unit 206 controls the transmission data selection unit 207 to transmit the program data to the encoder 208 (STEP 605). Then, the transmission management unit 206
Increases the number of repetitive transmissions of the transmitted program data by one (STEP 606), and calculates the available transmission capacity of the transmission band based on the “minimum transmission capacity” (STE).
P607).

FIG. 7 is a diagram showing details of the reproduction control section 22. The separating unit 71 separates the multiplexed stream received by the receiving unit 21 into time information and individual streams. The separation unit 71 sends the time information to the time information management unit 71, and sends the stream relating to the baseband real-time video / audio to the MPEG decoder 73, and sends the other streams to the data decoder 74. The time information management unit 72 generates the reference time information STC using a timer (not shown), and corrects the time information based on the time information as needed. The MPEG2 decoder 73 decodes the separated real-time video / audio stream in accordance with the time information sent from the time information management unit 72 and sends it to the output control unit 75. The data decoder 74 decodes a stream other than the real-time video / audio stream and sends it to the control information extracting unit 76.
That is, each encoded individual stream is subjected to decoding corresponding to the encoding. The playback control information extraction unit 76 extracts playback control information associated with the decoded stream, sends the extracted playback control information to the playback control information interpretation unit 77, and sends the stream to the stream management unit 78. . Playback control information interpreter 77
Interprets the reproduction control information transmitted from the broadcast station 1 and notifies the stream management unit 78 of the interpretation. The stream management unit 78 controls the stream based on the result of interpretation by the reproduction control information interpretation unit 77. That is, the stream management unit 78 outputs the stream to the stream data storage unit 23 based on the reproduction control information, or reads the stream from the stream data storage unit 23 and sends the stream to the output control unit 75. The output control unit 75 includes the input control unit 2
Based on the operation information transmitted from the control unit 6, any of the transmitted streams is selected, or a combination is performed to generate an output signal suitable for the output unit 24.

Next, the transmission management section 206 according to the present embodiment.
8 will be described with reference to FIGS. 8 and 9. FIG.
In this example, it is assumed that a real-time program H based on baseband video / audio data and a program group D shown below are transmitted to a viewer on one channel (transport stream). In addition, the transmission band of one channel is 24 Mbps, and the program H is the first area 22
Mbps, and the program group D uses the remaining transmission band (2 Mbps) which is the second area.

Program DA: Real-time type program.
One program is constituted by chronologically continuous program data. Therefore, there is a restriction that such a program must be transmitted as quickly as possible while excluding other programs. For example, a so-called TV broadcast program or a so-called data broadcast special program linked to the TV broadcast program is applicable. The television broadcast program may be a high-definition image or a plurality of television images.

Program DB: a storage type program. One program includes a plurality of program data DB 1,
DB 2,... Therefore, such a program has a limitation that its program data must be continuously transmitted in time series.

Program DC: a real-time program.
The difference from the program DB is that it is composed of a plurality of program data that cannot be divided and transmitted, but is produced on the premise of interruption as a service. If you watch without accumulating,
Interruptions can occur.

Program DC +: a storage type program. It is a simplified program of another program, and is positioned as, for example, a digest information program of a program DA and a program DB.

Program DD: a storage type program. However,
There is no restriction on the broadcast time at which time it must be broadcast.

The transmission management section 206 transmits the program data based on the control information associated with the program data constituting each program shown in FIG. FIG. 7B shows the transmission interval calculated based on this control information.
Thereby, the band securing state of the transmission band in this example is
As shown in FIG.

Time “00:00” Transmission management section 206 connects program DC and program DD to transmission data selection section 207. As a result, the program DC and the program DD can be transmitted. Transmission management unit 2
06 selects a program DC having the highest transmission priority from among programs in a transmittable state, and transmits the program DC to the data encoder 208b so that the program DC is transmitted to the data encoder 208b.
7 is controlled. Next, the transmission management unit 206 selects the program DD, and similarly controls the transmission data selection unit 207 so that the program DD is transmitted to the data encoder 208b.

Time “00:10” The transmission management unit 206 transmits the program DC + to the transmission data selection unit 2
07, the program D having the highest transmission priority at this time
After selecting C, the program DC + is selected instead of the program DD. That is, the transmission band occupied by the program DD is occupied by the program DC +.

Time “00:12” Since the execution right of the program DC has been abandoned, the transmission management unit 2
06 suspends the transmission of the program DC. Transmission management unit 206
Selects the program DD as a program to be transmitted to an empty transmission band caused by the interruption of transmission of the program DC.

Time “00:13” Similarly, since it has reached the execution right abandonment time of the program DC +, the transmission management unit 206 suspends the transmission of the program DC +, and the transmission of the program DD is performed in the transmission band where the space has been created. Control to be sent.

Time “00:15” The transmission management unit 206 stores the program DA in the transmission data selection unit 20
Connect to 7. The transmission management unit 206 selects the program DA having the highest transmission priority from the programs that are in a transmittable state. Since the transmission of the program DA does not create a vacancy in the transmission band, the program DD that has been transmitted until then becomes
It will not be sent.

Time “00:25” The transmission management unit 206 stores the program DB in the transmission data selection unit 20
Connect to 7. However, since there is no vacancy in the transmission band, the program DB is not transmitted.

Time “00:30” The transmission management unit 206 disconnects the program DA that has reached the transmission end time from the transmission data selection unit 207. As a result, a vacancy occurs in the transmission band, so that the transmission of the program D
B, Select program DD.

Time “00:43” Similarly, the transmission management unit 206 transmits a program DC + whose transmission interval has elapsed from the previous transmission time.

Time “00:45” The transmission management unit 206 stores the program DC in the transmission data selection unit 20
Connect to 7. The program DC is repeatedly transmitted at time “00:30”, but since the minimum transmission capacity cannot be secured, the time “00: 4” at which the transmission of the high-priority program ends.
5 "will not be sent.

In this example, the transmission capacity of the first area and the second area has been described as being fixed. However, the transmission capacity of each area is dynamically determined according to the contents of the program data to be transmitted. It may be changed. Also, instead of being divided into the first area and the second area, the program H may be handled in the same manner as the program group D in one transmission area.

When the program data is transmitted by the transmission management device 206 as described above, the viewer can enjoy the following broadcasting service.

FIG. 10 is a diagram showing an example of a display screen of the receiving terminal device 2. For example, it is assumed that the viewer selects the channel of the broadcast service according to the present embodiment at time T1 shown in FIG. 8 and does not change the channel as it is. At time T0, the receiving terminal device 2 provides a real-time program H and a program DC as shown in FIG. After a while from the time T0, the receiving terminal device 2 completes the accumulation of the program DC + behind the provision of the program H. As a result, the receiving terminal device 2 can also provide the program DC + as shown in FIG. At time T2, the reception terminal device 2 interrupts the reception of the program DC due to the reception of the program DA, and therefore provides the program DA instead of the program DC as shown in FIG. At time T3, the receiving terminal device 2
To resume the reception of C, as shown in FIG.
The program DB1 and the program DC are provided. And time T
4, the receiving terminal device 2 can provide the real-time type program DC without interruption as well as the program DB2 as shown in FIG. Thus, according to the receiving terminal device 2 according to the present embodiment,
For example, even if the reception of the program DC is not completed to the end, the program DC +, which is a digest version of the program DC, is received in a short time, and the program DC + can be watched to grasp the outline of the program DC. become able to. The display screen of the receiving terminal device 2 is configured based on a viewer's instruction from the input control unit to the output control unit 75. Therefore, the viewer can enjoy various services according to the instruction. For example, the viewer can view only the program H.

As described above, according to the present embodiment, 1
Streams based on a plurality of program data can be flexibly allocated to one transmission band. Therefore,
Streams can be allocated according to the available capacity of the transmission band, so that useless null packets (nu
ll packet) need not be assigned. Therefore, the transmission band can be used effectively. Thus, by repeatedly transmitting a small-capacity program relating to the outline of a certain program, the viewer can enjoy a service corresponding to the reception time.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic functional configuration of a broadcasting system according to an embodiment;

FIG. 2 is a diagram illustrating details of a broadcast management apparatus according to the embodiment;

FIG. 3 is a diagram showing an example of control information.

FIG. 4 is a diagram for explaining a processing operation of the broadcast management device;

FIG. 5 is a diagram for explaining a processing operation of the broadcast management device;

FIG. 6 is a diagram for explaining a processing operation of the broadcast management device;

FIG. 7 is a diagram showing details of a reproduction control unit according to the embodiment;

FIG. 8 is a diagram showing an operation example of a transmission management unit according to the embodiment;

FIG. 9 is a diagram showing an operation example of a transmission management unit according to the embodiment;

FIG. 10 is a diagram showing an example of a screen of a receiving terminal device.

FIG. 11 is a diagram illustrating an example of a screen of a receiving terminal device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Broadcasting station 11 ... Content production device 12 ... Authoring terminal device 13 ... Broadcast management device 14 ... Transmitting unit 2 ... Receiving terminal device 21 ... Receiving unit 22 ... Reproduction control unit 23 ... Stream data storage unit 24 ... Output unit 25 ... Input Unit 26: Input control unit

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinichiro Kasugai 5-3-6 Akasaka, Minato-ku, Tokyo Tokyo Broadcasting Corporation F-term (reference) 5C022 CA03 5J064 AA05 BC02 BC25 BC29 BD03 BD04 5K072 AA14 BB14 BB25 CC15 DD16 DD17 EE24 FF09 FF24 GG12 GG13 GG32

Claims (21)

[Claims] 1. A broadcast management apparatus for managing transmission of program data constituting a program, comprising: controlling a state of the program data in accordance with information on a broadcast time; A broadcast management apparatus for transmitting program data while sequentially selecting program data from among the program data in accordance with priority information. 2. The broadcast management apparatus according to claim 1, wherein the broadcast management apparatus repeatedly transmits the selected program data according to information on the number of times of repeated transmission. 3. The broadcast management apparatus according to claim 2, wherein when it is determined that the selected program data has passed a predetermined repetition transmission time, the broadcast management device transmits the selected program data. The broadcast management device according to the above. 4. The broadcast management apparatus according to claim 3, wherein the broadcast management apparatus obtains the repeat transmission time based on the information on the broadcast time and the information on the number of repeat transmissions. 5. The broadcast management device according to claim 3, wherein the broadcast management device transmits another program data selected according to the information on the priority during the repeated transmission time. apparatus. 6. The broadcast management apparatus according to claim 1, wherein the broadcast management apparatus transmits the selected program data according to information on a transmission capacity. 7. The broadcast management apparatus according to claim 1, wherein the broadcast management apparatus interrupts the transmission of the program data being transmitted according to information on the occupation time. 8. A first memory for storing program data constituting a program.
Storage means for storing control information associated with each of the program data, and transmission management means for managing transmission of the program data according to the control information stored in the second storage means. The transmission management means comprises: a state control means for controlling a state of the program data according to information on a broadcast time in the control information; and And a selection control means for controlling so as to sequentially select and transmit the program data according to the priority information in the control information. 9. The broadcast management apparatus according to claim 8, wherein said transmission management means repeatedly transmits the selected program data in accordance with information on the number of times of repetition transmission in said control information. 10. The transmission management means determines whether a predetermined repetition transmission time has elapsed from a previous transmission time for the selected program data,
10. The broadcast management apparatus according to claim 9, wherein program data determined to have passed the predetermined repeated transmission time is transmitted. 11. The broadcast management apparatus according to claim 10, wherein said transmission management means obtains said repeated transmission time based on information on said broadcast time and information on said number of repeated transmissions. 12. The transmission management means according to claim 9, wherein the transmission management means transmits another program data selected according to the information on the priority during the repeated transmission time of the program data. Broadcast management device. 13. The transmission management means according to information relating to a transmission capacity, determines whether or not the selected program data can be transmitted, and transmits the program data determined to be capable of being transmitted. 13. The broadcast management device according to any one of items 8 to 12. 14. The broadcast management apparatus according to claim 8, wherein said transmission management means interrupts transmission of said transmitted program data in accordance with information on occupation time. 15. A recording medium recording control information associated with program data, wherein the control information has information about a broadcast time and information about a priority, and the information about the broadcast time is The information related to the priority is controlled so that the program data set to be ready for transmission by the control is selected in a priority order indicated by the information related to the priority. A recording medium on which control information is recorded. 16. The apparatus according to claim 16, wherein the control information further includes information on the number of repetitive transmissions, and the information on the number of repetition transmissions specifies the number of transmissions of the selected program data. 15. A recording medium on which the control information according to 15 is recorded. 17. The control information according to claim 16, wherein the information on the broadcast time and the information on the number of repetitive transmissions are for calculating a repetitive transmission time at which the program data is repeatedly transmitted. The recording medium on which it was recorded. 18. The method according to claim 18, wherein the control information further includes information on a transmission capacity, and the information on the transmission capacity indicates a transmission capacity of the program data to be secured in a predetermined transmission band. A recording medium on which the control information according to claim 15 is recorded. 19. The control information further includes information on an occupation time, wherein the information on the occupation time is for controlling transmission of the transmitted program data to be interrupted. A recording medium on which the control information according to claim 15 is recorded. 20. A recording medium recording a program for realizing a function for causing a computer to manage transmission of program data constituting a program, the program comprising: control information associated with each of the program data. State control means for controlling the state of the program data in accordance with the information on the broadcast time in the program data; and And a selection control means for controlling data to be sequentially selected and transmitted. 21. A method of transmitting program data for managing transmission of program data constituting a program, comprising: controlling a state of the program data according to information on a broadcast time; A method of transmitting program data, wherein the program data is transmitted while sequentially selecting the program data from the data in accordance with the priority information.