JP3737664B2 - Program information transmission apparatus, program information transmission method, computer-readable recording medium, and digital broadcast transmission system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a program information transmission apparatus that generates and transmits a transport stream packet (hereinafter referred to as “TSP”) of program information used in a digital broadcast transmission system.
[0002]
[Prior art]
In recent years, with the start of digital broadcasting, program information has been provided as a service to viewers. This program information defines a certain period and is repeatedly transmitted along with the program according to this period.
FIG. 8 shows a configuration diagram of a conventional program information transmission apparatus. This program information sending apparatus includes a data reception management unit 801, a program information storage unit 802, a period information storage unit 803, a timer management unit 804, a transmission control unit 805, a transmission queue buffer 806, and a data transmission unit 807. And.
[0003]
The data receiving unit 801 periodically acquires a series of TSPs similar to those sent by the data sending unit 807 and stores them in the program information storage unit 802. This TSP is used to multiplex program information of a plurality of channels in a time-division manner and multiplex it into a transport stream (hereinafter referred to as “TS”), and is generated in advance in units of periodic groups transmitted by the data transmission unit 807. .
[0004]
In addition, the data reception management unit 801 acquires period information that is a period for transmitting the TSP of the program information, and stores it in the period information storage unit 803.
The timer management unit 804 refers to the period information of the time zone including the current time stored in the period information storage unit 803, and outputs a period start signal to the transmission control unit 805 at a constant interval specified by the period information. To do.
[0005]
When receiving a cycle start signal from the timer management unit 804, the transmission control unit 805 reads the TSP to be transmitted from the TSP stored in the program information storage unit 802 and writes it in the transmission queue buffer 806.
The data sending unit 807 monitors the sending queue buffer 806. When the TSP is written, the data sending unit 807 reads the TSP, sends the TSP for multiplexing to the TS, and deletes the TSP that has been sent from the sending queue buffer 806.
[0006]
[Problems to be solved by the invention]
By the way, in the conventional program information transmission apparatus, the data reception management unit 801 periodically and collectively acquires TSPs that are time-division multiplexed into TSs in units of periodic groups that transmit program information of a plurality of channels. When a change occurs in a program of a certain channel or a change in the broadcast time of a program, it is difficult for the data sending unit 807 to send a TSP whose program information has been changed immediately.
[0007]
In view of the above problems, an object of the present invention is to provide a program information transmission apparatus capable of transmitting a prompt TSP to a TS multiplexer even when program information is suddenly changed on a channel basis.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels, constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels, A program information transmitting apparatus for transmitting a transport stream packet (TSP) of program information as a part of transmission information to a multiplexing apparatus that multiplexes and transmits to a transport stream. Program information acquisition means for acquiring the program start time and broadcast duration for each channel, schedule information storage means for storing the acquired program information, start time and broadcast duration as schedule information for each channel, and for each channel Program information corresponding to a program broadcast in a predetermined broadcast time period is stored in the schedule information storage unit. TSP generating means for reading out according to the program start time and broadcast duration time stored in the stage and generating TSP of program information;
  TSP storage means for storing the generated TSP, and TSP transmission control means for controlling transmission of the TSP stored in the TSP storage means to the multiplexer for each channel.The program information acquisition means further acquires the changed program information, and when the program information acquisition means acquires the changed program information, the channel specified by the changed program information is broadcast. A TSP update unit that generates only the TSP of the broadcast time zone of the channel and updates the TSP of the broadcast time zone of the channel stored in the TSP storage unit with the generated TSP.Is going to be.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a program information transmitting apparatus according to the present invention will be described with reference to the drawings.
(Embodiment)
FIG. 1 is a block diagram of an embodiment of a program information sending apparatus according to the present invention.
[0010]
The program information transmission apparatus includes a data reception management unit 101, a program information storage unit 102, a period information storage unit 103, a timer management unit 104, a TSP processing unit 105, a TSP buffer 106, a transmission control unit 107, A transmission queue buffer 108 and a data transmission unit 109 are provided.
FIG. 2 is a block diagram showing an outline of a digital broadcast transmission system to which the program information transmission apparatus is applied. The digital broadcast transmission system includes a program organization device 201, a program information transmission device, and a TS multiplexing device 202.
[0011]
The program organizing apparatus 202 edits video data and audio data constituting a program, encodes each data into a digital signal called an elementary signal (ES), and packetizes the elementary signal (Packetized Elementary Stream: PES). Then, the data structure is stored in a fixed-length packet called TSP (Transport Stream Packet; TSP), and the TSP of the video data and audio data is sent to the TS multiplexer 202.
[0012]
The program organization device 201 edits the schedule information of the program of each channel and sends it to the program information sending device. Also, transmission cycle information related to the transmission cycle of program information transmitted from the program information transmission device is transmitted to the program information transmission device. Further, when the schedule information is changed in the program information sending apparatus, the changed schedule information and the update instruction are sent to the program information sending apparatus.
[0013]
The TS multiplexer 202 multiplexes and transmits the TSP of program information sent from the program information sending device and the TSP of video data and audio data sent from the program organizing device 201 to the TS.
When receiving the schedule information for each channel from the program organization device 201, the data reception management unit 101 stores it in the program information storage unit 102 and sends a message to the TSP processing unit 105 that the schedule information has been input.
[0014]
When the data reception management unit 101 receives a change notification of schedule information such as a change of a program of a certain channel or a change of broadcast time from the program organization device 201, the schedule of the channel stored in the program information storage unit 102 is received. The information is updated and the TSP processing unit 105 is notified accordingly.
The data reception management unit 101 also stores the transmission cycle information in the cycle information storage unit 103 when the transmission cycle information is input from the program organization device 201. The transmission cycle is a cycle in which the transmission control unit 107 writes TSP of predetermined program information stored in the TSP buffer 106 in the transmission queue buffer 108.
[0015]
The program information storage unit 102 includes a hard disk or the like, and schedule information is written by the data reception management unit 101. When the schedule information is changed, it is updated.
FIG. 3 shows an example of schedule information stored in the program information storage unit 102. The schedule information 301 is described for each channel, and includes a program start time column 302, a broadcast time column 303, a program information size column 304, and a program information column 305. In the program information column 305, information related to the program, such as program name and performer name, is described in the form of section data. In the program information size column 304, the data size of the program information described in the program information column 305 is described in bytes.
[0016]
The cycle information storage unit 103 is composed of a hard disk or the like, and the transmission cycle information is written by the data reception management unit 101.
FIG. 4 shows an example of transmission cycle information stored in the cycle information storage unit 103. The sending cycle information 401 includes a plurality of pieces of cycle information, for example, cycle information 1, cycle information 2,..., Cycle information n. Each period information describes a relative start time 402 and its period (time) 403. The relative start time 402 is the broadcast start time of the program based on the time at which the TSP of the program information sent from the program information sending device is switched (except when updated for changing the program information). Time until.
[0017]
Period 403 refers to the time of the transmission period of the TSP that is transmitted according to the period information.
In addition, a start time column 404 to which each period information 1 to n is applied is provided.
In the transmission cycle information 401, the TSP of the program information of the program according to the cycle information 1 is set to “3 seconds” from midnight on October 14, 1999 to midnight on October 14, 2000, The TSP of the program information of the program according to the cycle information 2 is set to “6 seconds”, and the TSP of the program information of the program according to the cycle information n is set to “120 seconds”.
[0018]
Similarly, each transmission period from midnight on October 14, 2000 to midnight on October 14, 2001 is also defined for each period information.
Since the program information according to the cycle information 1 has a relative start time of “9 o'clock” of the cycle information 2, when the TSP of the program information is switched at midnight on October 14, 1999, the TSP of the program information is next changed. Until switching, the program information is from 0:00 am to 9:00 am on the same day.
[0019]
The program information according to the cycle information n is program information after midnight on October 15, 1999 at the same time.
The timer management unit 104 has a timer that counts the current time. When the notification of the switching time is received from the TSP processing unit 105, the timer management unit 104 switches between the TSP processing unit 105 and the transmission control unit 107 if the current time matches the time. Instruct that it is time.
[0020]
Further, the transmission control unit 107 is instructed to transmit TSP for each period of the period information 1 to n stored in the period information storage unit 103.
When the TSP processing unit 105 receives a message indicating that the schedule information has been input from the data reception management unit 101, the TSP processing unit 105 reads the schedule information 301 for each channel stored in the program information storage unit 102, and starts the program. By referring to the time 302 and the broadcast time 303, a TSP of program information for each period information 1 to n of the transmission period information 401 stored in the period information storage unit 103 is generated. The TSP of the generated program information is stored in the TSP buffer 106. At this time, the TSP of the program information is generated by generating a TSP in the broadcast time zone indicated by each period information and a TSP in the broadcast time zone after a certain time (after the switching time), as shown in FIG. Also record the index.
[0021]
The TSP processing unit 105 is preset with a time for updating (switching) the TSP of the program information, and notifies the timer management unit 104 of this switching time. This switching time is every fixed time, for example, every 3 hours on the basis of midnight, and refers to the time to switch from the currently transmitted program information to the TSP of the program information scheduled to be transmitted next.
[0022]
Further, the TSP processing unit 105 records packetization status information for each period information 1 to n. FIG. 6 is an example of the packetization status information stored in the storage area of the TSP processing unit 105. The packetization status information 601 corresponds to, for example, the cycle information 1, and the current time is information after 9 am on October 14, 1999 and before 12 am.
[0023]
The packetization status information 601 includes each channel number 602, whether the program information TSP 603 being transmitted has been packetized or unprocessed, and whether the program information TSP 604 to be transmitted next has been packetized or not processed, Time 605 is recorded.
When the TSP processing unit 105 first receives the notification of the schedule information 301, the program information TSP 603 that is being sent out of the packetization status information 601 and the program information TSP 604 that is to be sent out next are not packetized by default with each channel. Is done. Further, the next scheduled switching time 605 is set to the switching time that will be reached next from the current time. For example, if the current time is between midnight on October 14, 1999 and before 3:00 am, “3 am on October 14, 1999” is described.
[0024]
When the TSP is generated, it has been packetized, and when it has not yet been generated or is in the process of being generated, it is not packetized.
When a notification that the program information has been changed is received, the program information being transmitted on the channel of the program to be broadcast of the program information and the TSP packetization status information 601 of the program information to be transmitted next are packetized. The TSP including the program information after the change is generated again. It should be noted that after generating a TSP of program information to be currently transmitted and packetizing it, a TSP buffer so that the transmission control unit 107 can transmit the TSP immediately after the generation from the TSP of the program information being transmitted on the channel. 106 is switched.
[0025]
The TSP buffer 106 is composed of, for example, an SRAM or the like, and stores the TSP of the program information generated by the TSP processing unit 105.
FIG. 5 is a diagram illustrating an example of TSP data stored in the TSP buffer 106. The TSP buffer 106 stores a TSP data index 501 and TSP data 502. For example, the TSP data 502 of channel 1 is shown for period information 1. The TSP data 502 includes TSP data 503 being currently transmitted and TSP data 504 scheduled to be transmitted next. Next, TSP data 504 to be transmitted is TSP data transmitted when the current time matches the time indicated by the switching time 505.
[0026]
If the current time is 10:00 am, as described above, the switching time is 12:00 am, and the TSP data 503 is composed of TSPA11 to TSPA1n of channel 1 program information from 9:00 am to 6:00 pm The TSP data 504 is composed of program information TSPA21 to TSPA2m of channel 1 from 12:00 am to 9:00 pm.
[0027]
The storage address A1 of the TSP data index 501 indicates the address at which the first TSPA 11 of the TSP data 503 in the TSP buffer 106 is stored, and the storage address A2 indicates the address at which the first TSPA 21 of the TSP data 504 is stored. Show.
Note that TSP data of program information of channels 2,..., N is also stored in the TSP buffer 106 in the same manner.
[0028]
Similarly, TSP data for each channel is stored for each period information 2,..., N.
The transmission control unit 107 repeatedly stores the TSP data index 501 for each channel stored in the TSP buffer 106 every time it receives each period information 1 to n and the transmission start instruction from the timer management unit 104. The address is read and written to the transmission queue buffer 108.
[0029]
The transmission queue buffer 108 is composed of an SRAM or the like, and the storage address described in the index of the TSP data of the program information to be transmitted is written by the transmission control unit 107. The transmission queue buffer 108 is monitored by the data transmission unit 109.
When the storage address of the TSP data index is written in the transmission queue buffer 108, the data transmission unit 109 reads the TSP from the TSP buffer 106 in the written order, and transmits the read TSP to the transport stream multiplexer 202. .
[0030]
Next, the operation of the TSP processing unit 105 of this embodiment will be described using the flowchart shown in FIG.
The TSP processing unit 105 receives a notification that the schedule information has been received from the data reception management unit 101, a notification that the program information has been changed, or an instruction of the TSP update (switching) time of the program information from the timer management unit 104 (S702). ). It is determined whether or not the notified message is an instruction for switching time (S704). If not, it is determined whether or not the notification is a notification that schedule information has been received (S706). When the result is affirmative, the packetization status information 601 is created and recorded in the storage area (S708), and the process proceeds to S710.
[0031]
In S704, when it is instructed that it is the switching time, the switching time of the packetization status information 601 is rewritten after a certain time, for example, 3 hours, and the program information TSP604 scheduled to be transmitted next to the program information TSP603 being transmitted for each channel. The packetization status information 601 is updated (S712), and the process proceeds to S710.
[0032]
At this time, the reading destination of the TSP buffer 106 read by the transmission control unit 107 is switched to the program information TSP to be transmitted next.
In S706, when it is determined that the notification that the program information has been changed has been received, the packetization of the channel whose program information in the packetization status information 601 has been changed is changed to the program information TSP603 being sent and the next scheduled to be sent out. The program information TSP 604 is updated to be unprocessed (S714), and the process proceeds to S710.
[0033]
In S710, it is checked whether or not there is a channel that has not been packetized in the program information TSP 603 being transmitted in the packetization status information 601, and if there is, the TSP of the program information to be transmitted next is used as the TSP of the program information of that channel. The TSP is generated, packetization during transmission of the packetization status information 601 has been processed, the TSP of the generated program information is switched during transmission (S716), and the process proceeds to S718.
[0034]
In S710, when there is no unprocessed channel that is being packetized, it is determined whether or not there is a channel that is not yet processed for packetization (S720). A program information TSP is generated, the program information TSP 604 scheduled to be transmitted is updated to have been processed (S722), and the process proceeds to S718.
In S720, when there is no unprocessed channel, the timer management unit 104 is notified of the next switching time (S724), and the process returns to S704.
[0035]
In S718, it is determined whether or not a message is received. If received, the process returns to S704, and if not received, the process returns to S710.
In the present embodiment, a program for causing a computer to perform the functions of the respective units in the configuration diagram shown in FIG. 1 is recorded on a computer-readable recording medium, and this recording medium generates a TSP for each channel. The present invention can be applied to a program information transmission device having no function.
[0036]
【The invention's effect】
  As described above, the present invention constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels, and as a part of transmission information for a multiplexing apparatus that multiplexes and transmits the transport stream. A program information sending device for sending a transport stream packet (TSP) of program information, the program information obtaining means for obtaining program information of a plurality of channels together with a program start time and a broadcast duration for each channel. Schedule information storage means for storing the program information, start time, and broadcast duration as schedule information for each channel, and program information corresponding to a program broadcast in a predetermined broadcast time zone for each channel. The program information TS is read according to the program start time and broadcast duration time stored in the storage means. It includes a TSP generating means for generating a TSP storage means for storing the generated TSP, the TSP sends control means for controlling the delivery to the multiplexer of the TSP storage means stored TSP per channelThe program information acquisition means further acquires the changed program information, and when the program information acquisition means acquires the changed program information, the channel specified by the changed program information is broadcast. A TSP update unit that generates only the TSP of the broadcast time zone of the channel and updates the TSP of the broadcast time zone of the channel stored in the TSP storage unit with the generated TSP.Is going to be. With such a configuration, since TSP is generated for each channel, it becomes easy to cope with changes in program information for each channel,Even if there is a sudden change in program information (program change or change in broadcast time), it is possible to send program information corresponding to real time.
[0038]
In addition, the apparatus includes a period information acquisition unit that acquires period information that is a repetition transmission period of the TSP for each of a plurality of broadcast time zones, a period information storage unit that stores the acquired period information, and a timer, according to the period information And a time management means for instructing the TSP transmission control means to transmit the TSP for each broadcast time zone, wherein the TSP transmission control means is configured to transmit each broadcast of a plurality of channels within each time indicated by the period information. A time zone TSP is transmitted. With such a configuration, by setting the cycle information according to the broadcast time zone, for example, the program information in the time zone close to the current time can be shortened so that the receiving device can quickly receive the program information. can do.
[0039]
The TSP generation means notifies the time management means of a switching time for switching the program information at predetermined time intervals, and the time management means instructs the TSP generation means to switch the TSP when the switching time comes. The TSP generation means has a scheduled TSP generation unit that generates a TSP of program information in a broadcast time zone after a predetermined time interval from the switching time when receiving the switching instruction. With such a configuration, it is possible to smoothly generate a TSP of program information that is updated every predetermined time interval, for example, every 3 hours.
[0040]
The TSP storage means stores the generated TSP being transmitted for each channel and each transmission cycle, and the TSP to be transmitted next generated by the scheduled TSP generation unit for each channel. And a second storage unit that stores each transmission cycle, wherein the time management unit further instructs the TSP transmission control unit to switch the TSP to be transmitted, and the TSP transmission control unit receives a TSP switching instruction. The TSP read destination is changed from the first storage unit to the second storage unit. With such a configuration, the TSP of the program information is smoothly transmitted every predetermined time interval.
[0041]
Further, when the TSP transmission control unit receives a TSP transmission instruction from the time management unit, the TSP reading unit reads the TSP from the first storage unit or the second storage unit and the TSP reading unit reads the TSP. A queue buffer for writing the TSP and a reading / sending unit for reading and sending the TSP written in the queue buffer are provided. With such a configuration, the TSP of the program information can be multiplexed into the transport stream together with the video data of the program.
[0042]
  Further, the present invention constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels, and transmits the program information as a part of transmission information to a multiplexing apparatus that multiplexes and transmits the transmission stream. A program information transmission method for transmitting a port stream packet (TSP), wherein a program information acquisition step of acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel; A schedule information storage step for storing start time and broadcast duration as schedule information for each channel, and program information corresponding to a program broadcast in a predetermined broadcast time zone for each channel is stored in the schedule information storage step. Is read out according to the start time and broadcast duration of the program being And TSP generation step of generating a P, a TSP storage step of storing the generated TSP, the TSP sends control step of controlling each channel sent to the multiplexing device of TSP stored in the TSP storing stepThe program information acquisition step further acquires program information after the change,
When the changed program information is acquired in the program information acquisition step, only the TSP of the broadcast time zone of the channel where the program specified by the changed program information is broadcast is generated, and the generated TSP A TSP update step for updating the TSP in the broadcast time zone of the channel stored in the TSP storage stepI am going to do that. With such a configuration, a TSP is generated for each channel, so the program information for each channel can be changed.In real timeIt becomes easy to respond.
[0043]
  Further, the present invention constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels, and transmits the program information as a part of transmission information to a multiplexing apparatus that multiplexes and transmits the transmission stream. Program information acquisition for acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel to a program information transmission device that transmits a port stream packet (TSP)StepSchedule information storage that stores the acquired program information, start time, and broadcast duration as schedule information for each channelStepAnd program information corresponding to programs broadcast in a predetermined broadcast time zone for each channel, the schedule information storageIn stepsTSP generation that reads out the stored program start time and broadcast duration and generates TSP for program informationStepAnd TSP memory to store the generated TSPStepAnd the TSP memoryIn stepsTSP transmission control for controlling transmission of stored TSP to the multiplexer for each channelStepAndA computer-readable recording medium storing a program for execution,Acquisition of program informationStepObtains the program information after the change and obtains the program information.StepWhen the program information after the change is acquired, only the TSP of the broadcast time zone of the channel on which the program specified by the program information after the change is broadcast is generated, and the TSP is stored with the generated TSP.In stepsTSP update for updating the TSP of the corresponding broadcast time zone of the stored channelStepTheFor further executionA computer-readable recording medium recording the program is used. With such a configuration, the present invention can be applied to a program information sending device that does not have a function corresponding to the change of program information for each channel and can be a device that can respond in real time.
[0044]
  Furthermore, the present invention provides a program organization device that organizes programs of a plurality of channels and schedule information including program information, and program start times and broadcast duration times of the program information of the plurality of channels from the program organization device for each channel. Program information acquisition means to be acquired together with,
  Schedule information storage means for storing the acquired program information, start time and broadcast duration as schedule information for each channel; program information for a predetermined broadcast time zone for each channel is stored in the schedule information storage means A TSP generating means for generating a transport stream packet (TSP) for program information, a TSP storing means for storing the generated TSP, and storing in the TSP storing means TSP sending means for repeatedly reading out and sending out the received TSP,The program information acquisition unit further acquires program information after the change, and when the program information acquisition unit acquires the program information after the change, the program information acquisition unit is a channel on which the program specified by the program information after the change is broadcast. TSP update means for generating only the TSP for the broadcast time zone and updating the TSP for the broadcast time zone for the channel stored in the TSP storage means with the generated TSP.A program information transmitting apparatus, a multiplexing apparatus for multiplexing and transmitting a video stream and audio data of a program organized by the program organizing apparatus, and a TSP transmitted from the program information transmitting apparatus to a transport stream (TS) It is a digital broadcast transmission system consisting of With such a configuration, the program information transmitted together with the broadcast program is a TSP generated for each channel, so even if there is a sudden change in program information for each channel, it can be handled in real time. Accurate program information can be delivered to viewers who receive and view broadcasts.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment of a program information sending apparatus according to the present invention.
FIG. 2 is a schematic diagram showing an application example of the program information transmission apparatus of the above embodiment to a digital broadcast transmission system.
FIG. 3 is a diagram showing an example of schedule information stored in a program information storage unit of the embodiment.
FIG. 4 is a diagram illustrating an example of transmission cycle information stored in a cycle information accumulation unit according to the embodiment.
FIG. 5 is a diagram showing an example of TSP data stored in the TSP buffer and its traction in the embodiment.
FIG. 6 is an example of packetization status information describing a TSP generation process and an unprocessed status in the TSP processing unit of the embodiment.
FIG. 7 is a flowchart for explaining the operation of the TSP processing unit of the embodiment.
FIG. 8 is a block diagram of a conventional program information sending device.
[Explanation of symbols]
101 Data reception manager
102 Program information storage unit
103 Periodic information storage unit
104 Timer manager
105 TSP processor
106 TSP buffer
107 Sending control unit
108 Transmission queue buffer
109 Data transmission part

Claims (8)

A transport stream packet (TSP) of program information as a part of transmission information for a multiplexing device that constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels and multiplexes and transmits it to a transport stream A program information sending device for sending
Program information acquisition means for acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel;
Schedule information storage means for storing the acquired program information, start time, and broadcast duration as schedule information for each channel;
Program information corresponding to a program broadcast in a predetermined broadcast time zone for each channel is read according to the program start time and broadcast duration stored in the schedule information storage means, and a TSP of program information is generated. TSP generation means;
TSP storage means for storing the generated TSP;
TSP transmission control means for controlling transmission of the TSP stored in the TSP storage means to the multiplexing device for each channel ;
The program information acquisition means further acquires program information after the change,
When the program information acquisition means acquires the changed program information, only the TSP of the broadcast time zone of the channel on which the program specified by the changed program information is broadcast is generated, and the generated TSP uses the TSP the program information transmitting apparatus according to claim Rukoto includes a TSP update means for updating the TSP of the broadcast time zone of the channel stored in the storage means. Period information acquisition means for acquiring period information that is a repetition transmission period of TSP for each of a plurality of broadcast time periods;
Period information storage means for storing the acquired period information;
A time management unit that includes a timer and instructs the TSP transmission control unit to transmit a TSP for each broadcast time period according to the cycle information;
The TSP sends control means, a program information transmitting apparatus according to claim 1, wherein the sending the TSP of the broadcast time slot of a plurality of channels within each time indicated by the period information. The TSP generation means notifies the time management means of a switching time for switching program information at predetermined time intervals,
The time management means instructs the TSP generation means to switch TSP when the switching time comes,
The TSP generation means includes
3. The program information transmitting apparatus according to claim 2, further comprising a scheduled TSP generation unit that generates a TSP of program information in a broadcast time period after a predetermined time interval from the switching time when receiving the switching instruction. The TSP storage means is
A first storage unit that stores the generated TSP being transmitted for each channel and each transmission period;
A second storage unit that stores the TSP to be transmitted next generated by the scheduled TSP generation unit for each channel and for each transmission cycle;
The time management means instructs the TSP transmission control means to further switch the TSP to be transmitted,
4. The program information transmitting apparatus according to claim 3 , wherein upon receiving a TSP switching instruction, the TSP transmission control means changes a TSP reading destination from the first storage unit to the second storage unit. The TSP transmission control means includes:
A TSP reading unit that reads TSP from the first storage unit or the second storage unit upon receiving a TSP transmission instruction from the time management unit;
A queue buffer for writing the TSP read by the TSP reading unit;
5. The program information sending device according to claim 4, further comprising a reading and sending unit for reading and sending the TSP written in the queue buffer. A transport stream packet (TSP) of program information as a part of transmission information for a multiplexing device that constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels and multiplexes and transmits it to a transport stream A program information sending method for sending
A program information acquisition step of acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel;
A schedule information storage step for storing the acquired program information, start time, and broadcast duration as schedule information for each channel;
Program information corresponding to a program broadcast in a predetermined broadcast time zone for each channel is read in accordance with the program start time and broadcast duration stored in the schedule information storage step, and a TSP of program information is generated. A TSP generation step;
A TSP storage step for storing the generated TSP;
A TSP transmission control step for controlling the transmission of the TSP stored in the TSP storage step to the multiplexing device for each channel ;
The program information acquisition step further acquires program information after the change,
When the changed program information is acquired in the program information acquisition step, only the TSP of the broadcast time zone of the channel where the program specified by the changed program information is broadcast is generated, and the generated TSP A program information transmission method comprising a TSP update step of updating a TSP of the broadcast time zone of the channel stored in the TSP storage step. A transport stream packet (TSP) of program information as a part of transmission information for a multiplexing device that constitutes a part of a digital broadcast transmission system that transmits a program of a plurality of channels and multiplexes and transmits it to a transport stream To the program information sending device that sends
A program information acquisition step of acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel;
A schedule information storage step for storing the acquired program information, start time, and broadcast duration as schedule information for each channel;
Program information corresponding to a program broadcast in a predetermined broadcast time zone for each channel is read in accordance with the program start time and broadcast duration stored in the schedule information storage step, and a TSP of program information is generated. A TSP generation step ;
A TSP storage step for storing the generated TSP;
A computer-readable recording medium recording a program for executing a TSP transmission control step for controlling the transmission of the TSP stored in the TSP storage step to the multiplexing device for each channel ,
The program information acquisition step further acquires program information after the change, and when the program information acquisition step acquires the program information after the change, the program information specified by the program information after the change is broadcast. A computer recording a program for generating only a TSP for the broadcast time zone and further executing a TSP update step for updating the TSP for the broadcast time zone of the channel stored in the TSP storage step with the generated TSP A readable recording medium. A program organization apparatus for organizing programs of a plurality of channels and schedule information including program information;
Program information acquisition means for acquiring program information of a plurality of channels together with a program start time and a broadcast duration for each channel from the program organization device;
Schedule information storage means for storing the acquired program information, start time, and broadcast duration as schedule information for each channel;
Program information for a predetermined broadcast time period is read for each channel in accordance with the program start time and broadcast duration time stored in the schedule information storage means, and a TSP for generating a transport stream packet (TSP) of program information is generated. Generating means;
TSP storage means for storing the generated TSP;
TSP sending means for repeatedly reading and sending the TSP stored in the TSP storage means,
The program information acquisition means further acquires program information after the change,
When the program information acquisition means acquires the changed program information, only the TSP of the broadcast time zone of the channel on which the program specified by the changed program information is broadcast is generated, and the TSP is generated using the generated TSP. a program information delivery device Ru comprising a TSP update means for updating the TSP of the broadcast time zone of the channel stored in the storage means,
A digital broadcast transmission system comprising a multiplexing device that multiplexes and transmits a video stream and audio data of a program organized by the program organization device and a TSP sent from the program information sending device to a transport stream (TS). .

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