JP4246935B2 - Program transmission processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a program transmission processing apparatus for performing data broadcasting in a digital broadcasting system such as satellite broadcasting and terrestrial broadcasting.
[0002]
[Prior art]
In recent years, with the establishment of digital broadcasting technology, digital broadcasting has been started in satellite broadcasting systems using communication satellites and broadcasting satellites, and the transition to digital broadcasting is also planned in terrestrial broadcasting systems.
[0003]
In the above digital broadcasting stations, data broadcasting such as text broadcasting is performed in addition to television broadcasting. In data broadcasting, various information programs are broadcast, and information linked to the television broadcast program, information independent of the television broadcast program, and the like are provided therein.
[0004]
[Problems to be solved by the invention]
By the way, in the broadcasting station, since the multiplexed output rate, that is, the bandwidth of the broadcast wave is fixed in advance, the data to be transmitted by data broadcasting is transmitted from the multiplexed output rate to the video and audio transmission rate of the television broadcast program. It must be output at a rate minus. However, the transmission rate of video and audio varies depending on the program and video scene, and in some cases, the bandwidth that can be used for data broadcasting is narrowed, and a long time is required for data transmission. For this reason, the malfunction that the data of high priority data broadcasting cannot be transmitted in real time will arise.
[0005]
In addition, when the occupied bandwidth of television broadcasting decreases, an unused band is created and waste is increased.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a program transmission processing apparatus that can efficiently transmit at least data broadcast data with high priority without being affected by fluctuations in the broadcast band.
[0007]
[Means for Solving the Problems]
The program transmission processing apparatus according to the first aspect of the present invention is a television broadcast that is assigned to at least a part of a predetermined broadcast band and indicates a material of a television broadcast program based on control from an external control means. A plurality of pieces of data broadcasting material information indicating the materials of the data broadcasting program, which are assigned to a band different from the band of the television broadcasting signal including the material information and the television broadcasting signal in the broadcasting band, and each has a priority set. A program transmission processing apparatus for use in a digital broadcast system that broadcasts a data broadcast signal including period information including control information related to a data broadcast program, and performs a transmission process of the data broadcast signal,
Data broadcasting material information in which a part of the band of the data broadcast signal is set to a fixed band and the remaining band is set to a variable band corresponding to the band occupation ratio of the television broadcast signal, and at least the highest priority is set And a plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band in accordance with the band occupancy rate of the television broadcast signal included in the notification information from the external control means. Data broadcast signal output means for selectively allocating the variable band according to the priority order and transmitting it as a data broadcast signal is provided.
[0008]
According to the first aspect of the invention, since the information amount of the data broadcast signal can be varied according to the band occupancy rate of the television broadcast signal notified from an external control means such as a multiplexer, for example, When the bandwidth occupancy rate is minimum, all programs are transmitted within the transmittable bandwidth so that the user can promptly view the data broadcast program whenever the user starts reception. When the rate exceeds a predetermined threshold, it is possible to perform optimal data transmission according to bandwidth fluctuations, such as transmitting material information and period information of at least the highest priority set data broadcasting program it can.
[0009]
The program transmission processing device according to the second invention is a television broadcast that is assigned to at least a part of a predetermined broadcast band and indicates the material of the television broadcast program based on control from the external control means. A plurality of pieces of data broadcasting material information indicating the materials of the data broadcasting program, which are assigned to a band different from the band of the television broadcasting signal including the material information and the television broadcasting signal in the broadcasting band, and each has a priority set. A program transmission processing apparatus for use in a digital broadcast system that broadcasts a data broadcast signal including period information including control information related to a data broadcast program, and performs a transmission process of the data broadcast signal,
A part of the band of the data broadcast signal is set to a fixed band, the remaining band is set to a variable band according to the band occupancy rate of the television broadcast signal, and the television broadcast included in the notification information from the external control means Data broadcast signal output means for allocating data broadcast material information and period information set with at least the highest priority to a fixed band and transmitting it as a data broadcast signal when the signal bandwidth occupancy exceeds a predetermined threshold Is provided.
[0010]
According to the second aspect of the invention, when the bandwidth occupancy of the television broadcast signal exceeds a predetermined threshold, the data broadcast by the data broadcast is at least the data of the data broadcast program set with the highest priority. Only broadcast material information and period information are provided. For this reason, it is possible to efficiently transmit data broadcast data with high priority by effectively using a limited data broadcast band in the broadcast band. In addition, it is possible to ensure the transmission band of the data broadcast material information and the period information for which the highest priority is always set without being affected by the band fluctuation.
[0011]
According to a third aspect of the present invention, there is provided a program transmission processing apparatus which is a television set assigned to at least a part of a predetermined broadcast band and indicating a material of a television broadcast program based on control from an external control means. A plurality of data broadcast materials indicating data broadcast program materials assigned to a different band from the television broadcast signal including the broadcast material information and the television broadcast signal in the broadcast band, each of which has a priority set. Program used in a digital broadcast system for broadcasting data broadcast signals including information, periodic information including control information related to data broadcast programs, and event message information including other additional information. A sending processing device,
Data broadcasting material information in which a part of the band of the data broadcast signal is set to a fixed band and the remaining band is set to a variable band corresponding to the band occupation ratio of the television broadcast signal, and at least the highest priority is set A plurality of pieces of data other than the data broadcast material information allocated to the fixed band according to the band occupancy rate of the television broadcast signal included in the notification information from the external control means. Data broadcast signal output means for selectively allocating broadcast material information to a variable band according to priority and sending it as a data broadcast signal is provided.
[0012]
Therefore, in the third invention as well, as in the first invention, the information amount of the data broadcast signal can be varied in accordance with the band occupation rate of the television broadcast signal notified from the external control means. If the bandwidth occupancy rate of the John broadcast signal is minimum, all programs are transmitted within the transmittable band so that the user can quickly view the data broadcast program whenever the user starts reception. When the signal bandwidth occupancy exceeds a predetermined threshold, at least the material information, period information and event message information of the data broadcasting program with the highest priority set are transmitted. Optimal data transmission can be performed.
[0013]
According to a fourth aspect of the present invention, there is provided a program transmission processing apparatus, comprising: a television set assigned to at least a part of a predetermined broadcast band and indicating a material of the television broadcast program, based on control from an external control means. A plurality of data broadcast materials indicating data broadcast program materials assigned to a different band from the television broadcast signal including the broadcast material information and the television broadcast signal in the broadcast band, each of which has a priority set. Program used in a digital broadcast system for broadcasting data broadcast signals including information, periodic information including control information related to data broadcast programs, and event message information including other additional information. A sending processing device,
A part of the band of the data broadcast signal is set to a fixed band, the remaining band is set to a variable band according to the band occupancy rate of the television broadcast signal, and the television broadcast included in the notification information from the external control means Data to be transmitted as a data broadcast signal by assigning at least the highest priority data broadcasting material information, period information and event message information to a fixed band when the signal bandwidth occupancy exceeds a predetermined threshold Broadcast signal output means is provided.
[0014]
Therefore, in the fourth invention, as in the second invention, when the bandwidth occupancy rate of the television broadcast signal exceeds a predetermined threshold, the data broadcast by the data broadcast has at least the highest priority. Only the set data broadcast material information, cycle information, and event message information are provided. For this reason, it is possible to efficiently transmit data broadcast data with high priority by effectively using a limited data broadcast band in the broadcast band.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 1 is a block diagram showing an embodiment of an in-station system to which a program transmission processing apparatus according to the present invention is applied.
[0017]
As shown in the figure, this system includes encoders (ENC) 11 and 12, a multiplexer (MUX) 13, an encoding multiplex control unit (EMC) 14, a data broadcast transmission unit 15, and an automatic program transmission control unit. (APC) 16, a local clock 17, and a data server (DS) 18 are provided.
[0018]
The encoder 11 compresses and encodes the video signal of the television broadcast program using the MPEG2 encoding method to generate a program information signal (bit stream) and outputs it to the multiplexer 13. The encoder 12 compresses and encodes the audio signal of the television broadcast program using an AAC (Advanced Audio Coding) encoding method, generates a bit stream, and outputs the bit stream to the multiplexer 13.
[0019]
The multiplexer 13 multiplexes the outputs of the encoders 11 and 12 and the data broadcast data output from the data broadcast transmission unit 15 and transmits the multiplexed data as a transport stream. Also, based on the information output from the encoding and multiplexing control unit 14, data such as PMT (Program Map Table), PAT (Program Association Table), etc. is generated and multiplexed on the transport stream.
[0020]
The encoding multiplex control unit 14 controls the encoders 11 and 12 and the multiplexer 13 based on the instruction information provided from the automatic program transmission control unit 16, the broadcast schedule data, and the knitting time measured by the local clock 17. Note that the PMT and PAT include information related to programs and information indicating whether or not data broadcasting data is included in the transport stream.
[0021]
The data broadcast transmission unit 15 transmits the input data broadcast data to the multiplexer 13 based on the organization information provided from the data server 18 and the instruction information provided from the automatic program transmission control unit 16. The automatic program transmission control unit 16 transmits instruction information to the encoding multiplexing unit 14 and the data broadcast transmission unit 15 according to the broadcast schedule data provided from the data server 18 and the program scheduling time measured by the local clock 17. The encoding and multiplexing process of the encoding and multiplexing unit 14 is controlled, and the transmission process of the data broadcast transmitting unit 15 is controlled.
[0022]
FIG. 2 is a block diagram showing a specific configuration of the data broadcast sending unit 15.
[0023]
The data broadcast transmission unit 15 includes a DII section buffer 151, an event message section buffer 152, data broadcast service packet buffers 1531 to 153n, a multiprocessing unit 154, an output buffer 155, and a MUX transmission signal detection unit 156.
[0024]
The DII section buffer 151 stores a predetermined number of DII (Download Information Indication) section packet sequences as period information that is input from the outside and includes control information related to a data broadcast program.
[0025]
The event message section buffer 152 stores a predetermined number of event message section packet sequences that are input from the outside and include additional information related to or independent of the data broadcast program.
[0026]
The data broadcast service packet buffers 1531 to 153n are input from the outside and the material information of the first data broadcast program for which real-time property is required, the second not requiring real-time property compared to the first data broadcast program. A predetermined number of data broadcast service packet sequences including material information of the data broadcast program are stored.
[0027]
Based on the organization information from the data server 18, the instruction information from the automatic program transmission control unit 17, and the detection result by the MUX transmission signal detection unit 156, the multiplex processing unit 154 has a DII section buffer 151, an event message section buffer 152, data Packets are fetched from the broadcast service packet buffers 1531 to 153n, the packets are analyzed, and the number of fetched packet sequences are written into the output buffer 155.
[0028]
The output buffer 155 stores the packet sequence from the multiplex processing unit 154 to generate a data broadcast signal and outputs it to the multiplexer 13 as appropriate.
[0029]
The MUX transmission signal detection unit 156 detects the bandwidth occupancy rate of the television broadcast signal as shown in FIG. 3 from the notification information sent from the multiplexer 13, and from this detection result, the bandwidth occupancy rate reaches a predetermined threshold value. When it is determined that the threshold value has been exceeded, the multiple processing unit 154 is notified that the threshold value has been exceeded.
[0030]
On the other hand, when the multiplex processing unit 154 is notified from the MUX transmission signal detection unit 156 that the threshold value has been exceeded, each of the DII section buffer 151 and the event message section buffer 152 at a preset fixed rate. The packet is captured and written to the output buffer 155, and the data broadcast program having the highest priority set from the data broadcast service packet buffer 1531 to 153n based on the priority of the data broadcast program notified from the data server 18 is received. Only the packet containing the material information is captured and written to the output buffer 155.
[0031]
Next, the processing operation of the above configuration will be described below.
First, the basic concept of transmission is to use the remaining band of the band used for video / audio of a television broadcast program as the transmission band of data broadcasting. Since video / audio in digital broadcasting employs a compression encoding technique defined in MPEG2, the band for television broadcasting varies depending on the video scene.
[0032]
Currently, data for data broadcasting is transmitted at a fixed bit rate with an extra bandwidth reserved from the maximum video / audio code amount, so nothing is multiplexed even when the video / audio code amount decreases. There is no bandwidth and is wasted.
[0033]
Therefore, in the present embodiment, the DII section buffer 151, the event message section buffer 152, the data according to the band occupancy rate of the television broadcast signal notified from the multiplexer 13 in the multiplex processing unit 154 of the data broadcast sending unit 15 Since the packets are selectively fetched from the broadcast service packet buffers 1531 to 153n according to the priority order, written to the output buffer 155, and then output, the data broadcast service packets can be sent to the free bandwidth that has conventionally occurred. The waiting time can be eliminated on the receiver side.
[0034]
Here, in the data broadcast transmission unit 15, the multiprocessing unit 154 performs a DII section buffer 151, an event message section buffer 152, a data broadcast service in accordance with an instruction from the automatic program transmission control unit 16 and organization information from the data server 18. Packets are selectively fetched from the packet buffers 1531 to 153n. At the same time, the multiplex processing unit 154 writes the data broadcast service packet, the DII section packet, and the event message section packet with the highest priority set at the preset fixed rate to the output buffer 155 and also transmits the television broadcast signal. The data broadcasting service packet of the next order is written in the output buffer 155 at a variable rate according to the band occupation rate.
[0035]
Then, the output buffer 155 sends a data broadcast signal of a packet sequence as shown in FIG. In data broadcasting, all programs are repeatedly transmitted at regular time intervals so that the user can view them promptly regardless of when the user starts reception.
[0036]
On the other hand, if the MUX transmission signal detection unit 156 determines that the bandwidth occupancy rate of the television broadcast signal exceeds a predetermined threshold value, the multiprocessing unit 154 receives the DII section buffer 151 and the event message section buffer 152 from the DII section buffer 152. The section packet and the event message section packet are fetched and written to the output buffer 155, and only the data broadcasting service packet with the highest priority set is fetched from the data broadcasting service packet buffers 1531 to 153n and written to the output buffer 155.
[0037]
Then, the output buffer 155 sends a data broadcast signal of a packet sequence as shown in FIG.
[0038]
As a result, transmission of data of a high-priority data broadcast program associated with a video scene such as a quiz problem or one scene of a drama is affected even if the video / audio code amount of the television broadcast program is maximized. It is possible to transmit without giving.
[0039]
Thereafter, the multiplex processing unit 154 monitors the notification information from the multiplexer 13, and when the bandwidth occupancy rate of the television broadcast signal becomes equal to or less than a predetermined threshold, the data broadcast service packet buffers 1531 to 153n are not in the highest order. Reading of the data broadcasting service packet is resumed.
[0040]
As described above, in the above-described embodiment, when the bandwidth occupancy rate of the television broadcast signal notified from the multiplexer 13 exceeds a predetermined threshold value, the DII section buffer 151 and the event message section buffer are processed by the multiplex processing unit 154. The DII section packet and event message section packet are fetched from 152 and written to the output buffer 155, and only the data broadcasting service packet with the highest priority set is fetched from the data broadcasting service packet buffers 1531 to 153n, and the output buffer 155 is fetched. I try to write.
[0041]
Therefore, it is possible to efficiently transmit data broadcast data with high priority by effectively using a limited band in the broadcast band for data broadcasting. In addition, it is possible to always secure the bandwidth of the data broadcasting service packet, the DII section packet, and the event message section packet with high priority without being affected by the bandwidth fluctuation.
[0042]
In addition, when the bandwidth occupancy ratio of the television broadcast signal indicates the minimum, it is possible to transmit all programs within the transmittable band so that the user can promptly view the data broadcast program whenever the user starts reception. Therefore, since the broadcasting band for data broadcasting is fixed as in the prior art, there is no waste in the band, so that optimum data transmission according to the fluctuation of the band can be performed.
[0043]
The present invention is not limited to the above embodiment. For example, in the above embodiment, when the bandwidth occupancy rate of the television broadcast signal exceeds a predetermined threshold, the data broadcast service packet, the DII section packet, and the event message section packet set with the highest priority are transmitted. However, only the data broadcasting service packet and the DII section packet with the highest priority set may be used. The use of event messages is not necessarily required depending on the content. In addition, the fixed bandwidth can be set arbitrarily, and depending on the setting, it is possible to always transmit data broadcast packets with the first, second, and third priorities.
[0044]
In the above embodiment, the television broadcasting system using the fixed reception service has been described. However, for example, the present invention can also be applied to a mobile broadcasting system using a portable receiving terminal and a broadcasting system for a portable receiving terminal. is there. The present invention can also be applied to a computer system using a leased line network or the Internet.
[0045]
In addition, the configuration of the in-station system, the type and configuration of the data broadcast transmission unit, the control procedure and content of the data broadcast transmission unit when performing data broadcast, the content of the data broadcast packet, etc. also depart from the gist of the present invention. Various modifications can be made without departing from the scope.
[0046]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to provide a program transmission processing device that can efficiently transmit at least data broadcast data with high priority without being affected by fluctuations in the broadcast band. .
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of an in-station system to which a program transmission processing apparatus according to the present invention is applied.
FIG. 2 is a block diagram showing a specific configuration of a data broadcast transmission unit shown in FIG. 1. FIG. 3 is a timing chart showing a band relationship between a television broadcast signal and a data broadcast signal in the embodiment.
FIG. 4 is a timing chart for explaining a processing operation in the embodiment.
[Explanation of symbols]
11, 12 ... Encoder (ENC),
13: Multiplexer (MUX),
14 ... Encoding multiplex control unit (EMC),
15: Data broadcast sending section,
16 ... Automatic program transmission control part (APC),
17 ... Clock clock,
18 ... Data server (DS),
151 ... DII section buffer,
152 ... event message section buffer,
1531-153n ... Data broadcasting service packet buffer,
154 ... multiple processing unit,
155 ... Output buffer,
156... MUX transmission signal detection unit.

Claims (9)

Assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and a first service broadcast signal first band including the service material information indicating a material of a first service broadcast program is varied, the broadcast Second service material information indicating materials of a plurality of second service broadcast programs assigned to a band to which the first service broadcast signal in the band is not assigned, and each of which is set with a priority order; A program transmission processing apparatus connected to a preceding stage of a multiplexer that multiplexes and transmits a second service broadcast signal including period information including control information related to the service broadcast program, and performs a process of transmitting the second service broadcast signal Because
A part of the band of the second service broadcast signal is set to a fixed band, and the remaining band is set to a variable band corresponding to an occupation ratio in the broadcast band of the first service broadcast signal, and at least the highest The second service material information and the period information set in the priority order are assigned to the fixed band, and the fixed rate is determined according to the occupation rate in the broadcast band of the first service broadcast signal notified from the multiplexer. Output means for selectively allocating a plurality of second service material information other than the second service material information allocated to a band to the variable band in accordance with a priority order and transmitting the second service material information as the second service broadcast signal; A program transmission processing apparatus characterized by the above. Assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and a first service broadcast signal first band including the service material information indicating a material of a first service broadcast program is varied, the broadcast A plurality of pieces of second service material information indicating materials of a second service broadcast program assigned to a band to which the first service broadcast signal in the band is not assigned and each having a priority set; A program transmission processing apparatus connected to a preceding stage of a multiplexer that multiplexes and transmits a second service broadcast signal including period information including control information related to a service broadcast program, and performs a process of transmitting the second service broadcast signal. There,
A part of the band of the second service broadcast signal is set to a fixed band, and the remaining band is set to a variable band corresponding to an occupation ratio in the broadcast band of the first service broadcast signal, and the multiplexer When the occupation rate in the broadcast band of the first service broadcast signal notified from the first service broadcast signal exceeds a predetermined threshold, at least the second service material information set to the highest priority and the period information A program transmission processing apparatus comprising output means for allocating to the fixed band and transmitting the second service broadcast signal. The output means includes
A plurality of input buffers storing the plurality of second service material information and the period information for each information;
An output buffer for storing input information and outputting it as the second service broadcast signal;
The second service material information and the period information set at the highest priority among the plurality of input buffers are read at a rate corresponding to the fixed band, stored in the output buffer, and notified from the multiplexer. A plurality of second service materials other than the second service material information allocated to the fixed band from among the plurality of input buffers in accordance with the occupation ratio of the first service broadcast signal in the broadcast band. 3. The program transmission processing apparatus according to claim 1, further comprising a read control unit that selectively reads out information according to priority and stores the information in the output buffer. A television broadcast signal assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and the band containing the television broadcast material information indicating a material of a television broadcast program is varied, the television in the broadcast band A data broadcast including a plurality of data broadcast material information indicating data broadcast program materials assigned to a band different from the John broadcast signal band and each having a priority set, and periodic information including control information related to the data broadcast program A program transmission processing apparatus connected to a preceding stage of a multiplexer that multiplexes and transmits signals, and performs transmission processing of the data broadcast signal,
A part of the band of the data broadcast signal is set to a fixed band, and the remaining band is set to a variable band according to the occupation ratio in the broadcast band of the television broadcast signal, and at least set to the highest priority. Data broadcast material information and period information assigned to the fixed band, and data broadcast material information assigned to the fixed band according to the occupation ratio in the broadcast band of the television broadcast signal notified from the multiplexer A program transmission processing apparatus comprising: data broadcast signal output means for selectively allocating a plurality of data broadcast material information other than the above to the variable band in accordance with a priority order and transmitting the data broadcast signal as the data broadcast signal. At least a portion of the allocated band, and television and the television broadcast signal band including the material information indicating a material of a broadcast program is varied, the television broadcast signal in the broadcast band of Jo Tokoro in broadcast band A plurality of data broadcast material information indicating data broadcast program material assigned to a different band from each other and set priority, and a data broadcast signal including period information including control information related to the data broadcast program. A program transmission processing apparatus connected to a preceding stage of a multiplexer for multiplexing and transmitting, and for performing transmission processing of the data broadcast signal,
A part of the band of the data broadcast signal is set to a fixed band, and the remaining band is set to a variable band according to the occupation ratio in the broadcast band of the television broadcast signal, and the multiplexer is notified When the occupation ratio of the television broadcast signal in the broadcast band exceeds a predetermined threshold value, the data broadcast material information set at the highest priority and the period information are allocated to the fixed band, and the data A program transmission processing apparatus comprising data broadcast signal output means for transmitting as a broadcast signal. The data broadcast signal output means includes
A plurality of data broadcast material information, a plurality of input buffers storing the period information for each information;
An output buffer for storing input information and outputting the data broadcast signal;
The data broadcast material information and period information set at least at the highest priority among the plurality of input buffers are read out at a rate corresponding to the fixed band and stored in the output buffer, and notified from the multiplexer A plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band is selectively selected from the plurality of input buffers according to a priority order in accordance with the occupation ratio of the television broadcast signal in the broadcast band. 6. The program transmission processing apparatus according to claim 4 or 5, further comprising a read control means for reading and storing in the output buffer. A television broadcast signal assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and the band containing the television broadcast material information indicating a material of a television broadcast program is varied, the television in the broadcast band A plurality of data broadcast material information indicating the data broadcast program materials assigned to the bands to which the John broadcast signal is not assigned and each having a priority set, period information including control information related to the data broadcast program, and other A program transmission processing apparatus connected to a preceding stage of a multiplexer that multiplexes and transmits a data broadcast signal including event message information including additional information, and performs a transmission process of the data broadcast signal,
A part of the band of the data broadcast signal is set to a fixed band, the remaining band is set to a variable band according to the occupation ratio of the television broadcast signal in the broadcast band , and at least the highest priority is set Data broadcast material information, period information and event message information assigned to the fixed band, and assigned to the fixed band according to the occupation ratio in the broadcast band of the television broadcast signal notified from the multiplexer A program transmission processing apparatus comprising data broadcast signal output means for selectively allocating a plurality of data broadcast material information other than data broadcast material information to the variable band in accordance with a priority order and transmitting the data broadcast signal as the data broadcast signal. A television broadcast signal assigned to at least a portion of the bandwidth of Jo Tokoro in broadcast band, and the band containing the television broadcast material information indicating a material of a television broadcast program is varied, the television in the broadcast band A plurality of data broadcast material information indicating the material of the data broadcast program, which is assigned to a band different from the band of the John broadcast signal, and each of which has a priority set, period information including control information related to the data broadcast program, and other A program transmission processing apparatus connected to a preceding stage of a multiplexer that multiplexes and transmits a data broadcast signal including event message information including additional information, and performs a transmission process of the data broadcast signal,
A part of the band of the data broadcast signal is set to a fixed band, and the remaining band is set to a variable band according to the occupation ratio in the broadcast band of the television broadcast signal, and the multiplexer is notified When the occupation ratio of the television broadcast signal in the broadcast band exceeds a predetermined threshold, at least the highest priority data broadcast material information, the period information, and the event message information are set in the fixed band. A program transmission processing apparatus comprising data broadcast signal output means for allocating and transmitting the data broadcast signal. The data broadcast signal output means includes
A plurality of input buffers storing the plurality of data broadcasting material information, the period information and the event message information for each information;
An output buffer for storing input information and outputting the data broadcast signal;
The data broadcasting material information, the period information and the event message information set with at least the highest priority among the plurality of input buffers are read out at a rate corresponding to the fixed band and stored in the output buffer, and from the multiplexer A plurality of data broadcast material information other than the data broadcast material information allocated to the fixed band is selected from the plurality of input buffers in accordance with the occupation ratio of the television broadcast signal in the broadcast band. 9. The program transmission processing apparatus according to claim 7, further comprising: a reading control unit that selectively reads out and stores the information in the output buffer.

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