JP2010246016A - Digital broadcast distribution system, digital broadcast distribution method, and digital broadcast distribution program in IP transmission - Google Patents

Abstract

Provided is a digital broadcast distribution system for IP transmission that reduces the amount of information to be transmitted when retransmitting digital broadcast transmitted by radio waves by IP transmission.
Information on rainfall-compatible broadcasting not used in IP transmission, information specific to a transmission path using radio waves, information on services not suitable for operation after retransmission from TS obtained by receiving digital broadcast waves or playing program content Information for other TSs is deleted by the rain corresponding broadcast deletion function 105, the transmission line specific information deletion function 107, the non-retransmission service deletion function 109, and the other TS information deletion function 112, and the TS transmission function 114 Is sent to the receiving apparatus 400 via the IP network 300.
[Selection] Figure 1

Description

  In the present invention, TS (Transport Stream: Multiple Signal Format defined in MPEG-2 Systems) composed of video, audio, subtitles, data broadcasting, PSI (Program Specific Information) / SI (Service Information Information), etc. is transmitted by radio waves. When retransmitting a digital broadcast to be transmitted, when changing the transmission method from broadcast to IP at the relay stage, delete unnecessary information due to the difference in transmission method or transmission service (channel) The present invention relates to a method for reducing transmission amount, enabling effective use of a transmission band, and reducing network operation costs.

  In many digital broadcasts, TS is transmitted by radio waves, and in digital terrestrial television broadcasts, operations are performed based on the operational rules defined in ARIB TR-B14 and BS digital broadcasts in ARIB TR-B15. . These operation rules are based on the assumption that transmission is performed by radio waves, and operations specific to transmission by radio waves are also defined.

  For example, physical conditions related to a transmission path such as the frequency of radio waves transmitted by each TS are transmitted on PSI / SI (see Non-Patent Document 1). In addition, since radio waves can cause signal degradation due to rainfall, etc., broadcasts that support rainfall (video / audio for signal degradation) are transmitted so that the minimum viewing is possible even when signal degradation occurs. (See Non-Patent Document 1). Further, since transmission by radio waves is one-way transmission, it is assumed that a promotion service or the like that does not presuppose bidirectionality is operated like communication by IP.

  When retransmitting such digital broadcasts by IP transmission, in order to make effective use of the transmission band, a device has been devised such as transcoding and transmitting video to a video encoding method with higher compression efficiency. (See Non-Patent Document 2).

  Non-Patent Document 3 describes the PSI / SI tables and descriptors used in the present invention.

“BS / Broadband CS Digital Broadcasting Operation Regulations”, ARIB TR-B15 4.4 Edition June 6, 2008, Volume 4 3.3.1.3.2 Satellite Distribution System Descriptor, pp. 4-210-pp. 4-211, Part 4, 22 Operation of PSI / SI at the time of hierarchical modulation, pp. 271. 4-133-pp. 4-136 IPTVFJ STD-0005 IPTV Standards Terrestrial Digital Television Broadcasting IP Retransmission Operation Regulations 1.1 Version November 28, 2008 Volume 7 6.1 Normal TS Transmission Method pp. 7-21 “Program Sequence Information Used for Digital Broadcasting”, ARIB STD-B10 4.6 Edition June 6, 2008, Part 2, 5.2 Table Definitions, pp. 69-pp. 93, Part 2 6.2 Descriptor encoding pp. 98-pp. 169

  However, when it is desired to further compress the amount of information, such as when retransmitting a high-quality (large amount of information) video distributed over a wide-band transmission path such as BS digital broadcasting, If a TS that is operated in accordance with the transmission is transmitted as it is, information that cannot be used at the time of broadcast reception by IP is transmitted, and transmission efficiency is poor.

  SUMMARY OF THE INVENTION The present invention solves the above problems, and its purpose is to provide a digital broadcast distribution system and method in IP transmission that reduces the amount of information to be transmitted when retransmitting digital broadcast transmitted by radio waves by IP transmission. To provide a program.

  In the present invention, when a digital broadcast that transmits a TS composed of video, audio, captions, data broadcast, PSI / SI, etc. by radio waves is retransmitted by IP transmission, Delete information specific to radio transmission. Note that PSI / SI in the present invention is defined by Non-Patent Document 3, PAT (Program Association Table), CAT (Condition Access Table), PMT (Program Map Table), NIT (Network Information Table), SD. (Service Description Table), EIT (Event Information Table), and BIT (Broadcaster Information Table).

  The assignment of PID and table_id of each PSI / SI table used in the present invention is shown in FIG. 12, the data structure of PAT in FIG. 13, the data structure of CAT in FIG. 14, the data structure of PMT in FIG. 16 shows the data structure of SDT, FIG. 17 shows the data structure of SDT, FIG. 18 shows the data structure of EIT, and FIG. 19 shows the data structure of BIT.

  First, in IP transmission, there is no signal degradation associated with rainfall, such as radio waves, and it is not necessary to use a rain-capable broadcast. In the present invention, information relating to a rain-capable broadcast is deleted. Referring to the information of the hierarchical transmission descriptor in the PMT, ES (Elementary Stream) in which quality_level indicates the value transmitted in the lower hierarchy and reference_PID is set is deleted, and the hierarchical transmission descriptor itself Also delete. The data structure of the hierarchical transmission descriptor referred to in the present invention is shown in FIG.

  Next, information peculiar to the transmission path by radio waves is deleted from PSI / SI. In addition, when the conditional access method is changed at the time of relay and the operation of the EMM (Entitlement Management Message) is not performed, the TS packet that transmits the EMM is also deleted.

  Furthermore, a service that is not suitable for the operation after retransmission, such as a promotion service that is operated on the premise of transmission by radio waves, is deleted, and information for the deletion target service in PSI / SI is deleted accordingly. FIG. 21 shows an application example of information to be edited in the present invention upon service deletion in BS digital broadcast IP retransmission.

  Finally, when the information of other TSs is also transmitted by each TS, the information is redundant and redundant between the TSs. Therefore, the SIs of all TSs are collectively transmitted as one SI-dedicated TS. The information for other TSs is deleted.

A digital broadcast distribution system in IP transmission according to claim 1 of the present invention is a digital broadcast distribution system in IP transmission that includes a transmission-side device and a reception-side device and performs IP transmission of digital broadcast via an IP network.
The sending device is:
With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for deleting information related to the rain corresponding broadcast,
Transmission path specific information deleting means for deleting transmission path specific information by radio waves from the TS,
Non-retransmission service deletion means for deleting information of non-retransmission service from the TS; and
Other TS information deleting means for deleting information for other TS from the TS,
A TS sending means for sending the TS from which each information has been deleted by the rain corresponding broadcast deleting means, a transmission line specific information deleting means, a non-retransmission service deleting means and another TS information deleting means to the IP network. It is characterized by that.

(1) According to the invention described in claims 1 to 10, when retransmitting a digital broadcast transmitted by radio waves, information to be transmitted when the transmission method is changed from broadcast to IP at the relay stage. By reducing the amount, the transmission band can be effectively used.
(2) According to the inventions described in claims 5 and 9, it is possible to delete information targeted for other TSs from each TS, and to cope with the case where information of other TSs is necessary.

The functional block diagram of the embodiment of this invention. The flowchart which shows the process in the rain corresponding | compatible broadcast deletion function of this invention. The flowchart which shows the process in the transmission line specific information deletion function of this invention. The flowchart which shows the process in the non-retransmission target service deletion function of this invention. The flowchart which shows the continuation 1 of the process in the non-retransmission object service deletion function of this invention. The flowchart which shows the continuation 2 of the process in the non-retransmission target service deletion function of this invention. The flowchart which shows the continuation 3 of the process in the non-retransmission target service deletion function of this invention. The flowchart which shows the process in the other TS information deletion function of this invention. 1 is a system configuration diagram of Embodiment 1 of the present invention. The system block diagram of Example 2 of this invention. Explanatory drawing which shows the table_id conversion rule example utilized by this invention. Explanatory drawing which shows allocation of PID of PSI / SI utilized by this invention, and table_id. Explanatory drawing which shows the data structure of PAT utilized by this invention. Explanatory drawing which shows the data structure of CAT utilized by this invention. Explanatory drawing which shows the data structure of PMT utilized by this invention. Explanatory drawing which shows the data structure of NIT utilized by this invention. Explanatory drawing which shows the data structure of SDT utilized by this invention. Explanatory drawing which shows the data structure of EIT utilized by this invention. Explanatory drawing which shows the data structure of BIT utilized by this invention. Explanatory drawing which shows the data structure of the hierarchy transmission descriptor utilized by this invention. Explanatory drawing which shows the example of application of the non-retransmission target service deletion function in this invention. Explanatory drawing which shows the data structure of the satellite distribution system descriptor utilized by this invention. Explanatory drawing which shows the data structure of the CA_EMM_TS descriptor utilized by this invention. Explanatory drawing which shows the data structure of the conditional access system descriptor utilized by this invention. Explanatory drawing which shows the data structure of the emergency information descriptor utilized by this invention. Explanatory drawing which shows the data structure of the CA service descriptor utilized by this invention. Explanatory drawing which shows the data structure of the service list descriptor utilized by this invention. Explanatory drawing which shows the data structure of the event group descriptor utilized by this invention. Explanatory drawing which shows the data structure of the link descriptor utilized by this invention. Explanatory drawing which shows the data structure of the hyperlink descriptor utilized by this invention. Explanatory drawing which shows the continuation 1 of the data structure of the hyperlink descriptor utilized by this invention. Explanatory drawing which shows the continuation 2 of the data structure of the hyperlink descriptor utilized by this invention. Explanatory drawing which shows the continuation 3 of the data structure of the hyperlink descriptor utilized by this invention. Explanatory drawing which shows the continuation 4 of the data structure of the hyperlink descriptor utilized by this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

  FIG. 1 shows a functional block diagram of the entire digital broadcast distribution system in the IP transmission of this embodiment. In FIG. 1, reference numeral 100 denotes a transmission side device, 200 denotes an SI dedicated TS transmission server provided outside the transmission side device 100, 300 denotes an IP network, and 400 denotes a reception side device.

  Reference numeral 101 in the sending apparatus 100 denotes program content, and reference numeral 102 denotes a playback function of playback means for playing back the program content 101. Reference numeral 103 denotes an antenna that receives a broadcast wave, and reference numeral 104 denotes a tuner that converts the broadcast wave received by the antenna 103 into a digital signal.

  105 indicates whether or not a hierarchical transmission descriptor indicating that it is an ES for rainfall-capable broadcasting (Elementary Stream) is included in the PMT (Program Map Table) included in the TS input from the playback function 102 or the tuner 104. If the hierarchical transmission descriptor is included, the elementary_PID described in the ES loop in which the descriptor is arranged is stored as the filtering target PID in the storage unit 106 as the first storage unit, It has a rain corresponding broadcast deletion function for performing a rain corresponding broadcast deleting means for deleting the layer transmission descriptor in the PMT and TS packets of all filtering target PIDs stored in the storage unit 106.

  107 deletes the descriptor when a satellite distribution system descriptor is arranged in the PSI / SI of the TS, and describes the description when a CA_EMM_TS descriptor is arranged in the PSI / SI of the TS. If the child is deleted, the TS packet of the PID transmitted by the EMM in the TS is read, and the table of table_id that matches the table_id set in the setting value 108 of the first setting means is arranged, the EMM 2 shows a transmission path specific information deletion function for performing transmission path specific information deletion means for deleting.

  The setting value 108 is set with information of table_id indicating that it is an EMM when the conditional access method is changed and the operation of the EMM (Entitlement Management Message) is not performed.

  109 stores the second setting means (setting value 110) in which the service_id to be deleted, the TS_id to be deleted, and the broadcast_id to be deleted are set, and the PMT for all services of the service_id included in the TS Retransmission including a second storage unit (storage unit 111), and deleting a non-retransmission target service and PSI / SI information for the service from a TS input from the transmission path specific information deletion function 107 It shows a non-retransmission service deletion function that performs non-target service deletion means.

  112 includes third setting means (setting value 113) in which table_id as a table of another TS and table_id as a table to be output in the SI dedicated TS are set, and is input from the non-retransmission target service deletion function 109. When the table of the other TS set to the set value 113 is deleted from the TS, and the PSI / SI in the TS has a table to be output by the SI dedicated TS set to the set value 113, the TS The other TS information deletion function for performing other TS information deletion means for transmitting the table to the SI dedicated TS transmission server 200 is shown.

  Reference numeral 114 denotes a TS transmission function that performs TS transmission means for transmitting a TS input from the other TS information deletion function 112 to the IP network 300.

  The SI dedicated TS transmission server 200 provided outside the transmission side apparatus 100 multiplexes SI information received from the other TS information deletion function 112 of the plurality of transmission side apparatuses 100 into one TS and outputs it to the IP network 300. .

  The setting value 201 of the setting means of the SI dedicated TS transmission server 200 is used to convert table_id for the own network and the own TS (in the actual table) to table_id (in the other table) for the other network and other TS. A table_id conversion rule is set.

  Reference numeral 401 in the receiving apparatus 400 indicates a receiving function that performs a receiving means for receiving a TS transmitted via the IP network 300.

  Reference numeral 405 denotes an SI dedicated TS receiving function that performs SI dedicated TS receiving means for receiving the SI dedicated TS sent from the SI dedicated TS transmission server 200 via the IP network 300.

  Reference numeral 402 denotes a PSI / SI which performs PSI / SI processing means for processing each information of the SI dedicated TS obtained from the SI dedicated TS receiving function 405 when information of the TS received by the receiving function 401 or other TS is necessary. The SI processing function is shown.

  Reference numeral 403 denotes a playback function that performs playback means for playing back video using the TS received from the PSI / SI processing function 402.

  Reference numeral 404 denotes a program guide display function for generating a program guide based on the information received from the PSI / SI processing function 402 and performing program guide display means for displaying the program guide on the screen.

  Next, a processing flow for each functional block of the transmission side apparatus 100 will be described.

  The reproduction function 102 reproduces the program content 101 and outputs a TS to the rain corresponding broadcast deletion function 105. Alternatively, the antenna 103 receives the broadcast wave and outputs the broadcast wave to the tuner 104, and the tuner 104 converts the input broadcast wave into a digital signal and outputs it as a TS to the rain corresponding broadcast deletion function 105.

  The rain corresponding broadcast deletion function 105 deletes a hierarchical transmission descriptor when the hierarchical transmission descriptor is included in the ES loop of the PMT included in the input TS. Furthermore, the hierarchical transmission descriptor indicates that it is a rain-supporting broadcasting ES (the quality_level in the hierarchical transmission descriptor indicates a value ('0') transmitted in the lower hierarchy, and the reference_PID is set. If (≡0x1FFF "is not set)), the elementary_PID described in the ES loop in which the descriptor is arranged is stored in the storage unit 106 as the filtering target PID, and the ES loop is deleted. If there is a filtering target PID stored in the storage unit 106, the TS packet transmitted with the PID is deleted, and the TS is output to the transmission path specific information deletion function 107.

  When the PMT and the descriptor in the PMT are edited, CRC (Cyclic Redundancy Check) error detection of the PMT is recalculated, and the CRC_32 in the PMT is overwritten.

  An example of the processing flow of the rain corresponding broadcast deletion function 105 will be described with reference to FIG. In the flowcharts of FIGS. 2 to 8 described below, “S” indicates each processing step.

  S401: Receive TS input from playback function 102 or tuner 104, and proceed to S402.

  S402: The PMT in the TS input in S401 (FIG. 15) is read, and it is indicated that any ES loop in the PMT is a rain-supporting broadcast ES (a value at which quality_level is transmitted in a lower hierarchy ( '0') and reference_PID is set (“0x1FFF” is not set)) When it is detected that a hierarchical transmission descriptor (FIG. 20) is arranged, the process proceeds to S403. If it is detected that this is not the case, the process proceeds to S405.

  S403: element_PID in the ES loop in which the hierarchical transmission descriptor indicating that it is a rain-supporting broadcast ES in the PMT detected in S402 is set as a filtering target PID program_number (service_id) ( FIG. 15) is stored in the storage unit 106, and the process proceeds to S404.

  S404: Delete the ES loop in which the hierarchical transmission descriptor indicating the rain-supporting broadcast ES in the PMT detected in S402 is arranged, and proceed to S406.

  S405: Assuming that there is no filtering target PID associated with the PMT detected in S402, the filtering target PID stored together with program_number (service_id) in the PMT is deleted from the storage unit 106, and the process proceeds to S406.

  S406: The hierarchical transmission descriptor is deleted from all ES loops in the PMT detected in S402, and the process proceeds to S407.

  S407: Delete all TS packets of the filtering target PID stored in the storage unit 106 from the TS input in S401, and proceed to S408.

  S408: The TS is output to the transmission path specific information deletion function 107.

  The transmission path specific information deletion function 107 deletes the satellite distribution system descriptor when the satellite distribution system descriptor is arranged in the PSI / SI of the TS input from the rain corresponding broadcast deletion function 105. The data structure of the satellite distribution system descriptor referred to in the present invention is shown in FIG. If the conditional access method is changed at the time of IP retransmission and the EMM is not operated, the table of table_id that matches the table_id indicating that the EMM is preset in the setting value 108 is deleted, and at the same time, the PSI / When the CA_EMM_TS descriptor is arranged in the SI, the CA_EMM_TS descriptor is deleted, and the TS is output to the non-retransmission target service deletion function 109. FIG. 23 shows the data structure of the CA_EMM_TS descriptor referred to in the present invention.

  When all the PSI / SI and descriptors in PSI / SI are edited, CRC error detection of the PSI / SI is recalculated, and the CRC_32 in the PSI / SI is overwritten.

  An example of the processing flow of the transmission path specific information deletion function 107 will be described with reference to FIG.

  S501: The TS is received from the rain corresponding broadcast deletion function 105, and the process proceeds to S502.

  S502: All PSI / SI in TS input in S501 are read, and if it is detected that a satellite distribution system descriptor is arranged in each descriptor loop, the process proceeds to S503. The process proceeds to S504.

  S503: Delete the satellite distribution system descriptor from the descriptor loop detected in S502, and proceed to S504.

  S504: All PSI / SI in TS input in S501 are read, and if it is detected that the CA_EMM_TS descriptor is arranged in each descriptor loop, the process proceeds to S505. Otherwise, the process proceeds to S506. move on.

  S505: The CA_EMM_TS descriptor is deleted from the descriptor loop detected in S504, and the process proceeds to S506.

  S506: If it is detected that a table of table_id that matches the table_id set in the setting value 108 is arranged in the TS input in S501, the process proceeds to S507. Otherwise, the process proceeds to S508.

  S507: The table_id table (EMM) detected in S506 is deleted, and the process proceeds to S508.

  S508: The TS is output to the non-retransmission target service deletion function 109.

  When the non-retransmission service deletion function 109 does not retransmit a part of services such as a promotion service in accordance with radio wave operation, the PSI for non-retransmission services and non-retransmission services is targeted. In order to delete the / SI information, from the transmission path specific information deletion function 107, information about service_id, TS_id (transport_stream_id), broadcast_id, which is a deletion target (non-retransmission target) set in the setting value 110 in advance is used. Delete from the input TS.

In the storage unit 111, PMTs for all service_id (program_number) services included in the TS (all PMTs referenced in the program loop in the PAT) are set in advance. The value to be set may be manually input statically or may be set by previously extracting the PMT in the input TS. (Note that when the PMT in the input TS is extracted in advance and set in the storage unit 111, the non-retransmission service deletion function 109 extracts the PMT in the input TS in advance and stores it in the storage unit 111. You may implement the processing set to.)
As specific deletion processing, when program_number of the program loop in the PAT shown in FIG. 13 is equal to the service_id to be deleted, the loop is deleted, and at the same time, it is transmitted by program_map_PID in the program loop. The PMT targeted for the deletion target service_id is deleted. In addition, among the PTS indicated by the PCR_PID of the PMT to be deleted shown in FIG. 15, the elementary_PID in the ES loop, and the CA_PID in the conditional access system descriptor shown in FIG. 24, the same TS set in the storage unit 111 Those not described in the PMT for the service_id that is not another deletion target are stored in the storage unit 111 as a filtering target PID list. The PID TS packets stored in the storage unit 111 as the filtering target PID list are deleted.

  Also, the TS loop targeted for the TS_id to be deleted in the NIT shown in FIG. 16, the broadcast loop intended for the broadcast_id to be deleted in the BIT shown in FIG. 19, and the TS_id to be deleted shown in FIG. SDT, the service loop for the service_id to be deleted in the SDT, and the EIT for the TS_id and service_id to be deleted shown in FIG. In addition, the emergency information descriptor shown in FIG. 25, the CA service descriptor shown in FIG. 26, the service list descriptor shown in FIG. 27, and the event group descriptor shown in FIG. 28 are arranged in PSI / SI, respectively. Then, the service_id loop targeted for the service_id to be deleted is deleted. In the case of the event group descriptor shown in FIG. 28, the service_id loop targeting the TS_id to be deleted is also deleted. At this time, if no loop exists due to the deletion of the service_id loop, the descriptor itself is deleted. Furthermore, when the link descriptor shown in FIG. 29 is arranged in the PSI / SI, the link descriptor is deleted for those in which TS_id and service_id to be deleted are set as link destinations. Similarly, when the hyperlink descriptors shown in FIGS. 30 to 34 are arranged in PSI / SI, the TS_id and service_id to be deleted are set as hyperlink destinations in the hyperlink descriptor. Delete.

  When all the PSI / SI and descriptors in PSI / SI are edited, CRC error detection of the PSI / SI is recalculated, and the CRC_32 in the PSI / SI is overwritten.

  Finally, the TS is output to the other TS information deletion function 112.

  A processing flow example of the non-retransmission target service deletion function 109 will be described with reference to FIGS.

  S601: Receive TS input from the transmission path specific information deletion function 107, and proceed to S602.

  S602: The PMT in the TS input in S601 is read, compared with the PMT for the same service_id held in the storage unit 111, and when it is detected that the description contents are different, S603 If not, the process proceeds to S605.

  S603: The PMT detected in S602 is overwritten and stored in the PMT value of the same service_id set in the storage unit 111, and the process proceeds to S604.

  S604: All PMTs in the same TS stored in the storage unit 111 are compared, and the PCR_PID of the PMT for the service_id specified as the deletion target, each elementary_PID in the ES loop, and the conditional access method Each CA_PID in the descriptor is extracted, and all other PMTs that are not subject to deletion (service_id) are not similarly referenced (not described in the PMT), that is, the deletion target service_id For PIDs that are only referenced from the PMT, each service_id (program_number) in the PMT is overwritten and stored in the storage unit 111 as a filtering target PID list (the list stored in the past for modernization is deleted). S60 To advance.

  S605: The PMT in the TS input in S601 is read, and if it is detected that the PMT is the deletion target service_id set in the setting value 110, the process proceeds to S606, and if not, the process proceeds to S607. .

  S606: The PMT detected in S605 is deleted, and the process proceeds to S607.

  S607: Delete TS packets of all PIDs in the filtering target PID list stored in the storage unit 111 from the TS input in S601, and proceed to S608.

  S608: The PAT in the TS input in S601 is read, and if it is detected that there is a program loop targeted for the service_id to be deleted set in the setting value 110, the process proceeds to S609. Proceed to S610 of 5.

  S609: The program loop targeted for the deletion target service_id in the PAT detected in S608 is deleted, and the process proceeds to S610 in FIG.

  S610: The NIT in the TS input in S601 is read, and if it is detected that a TS loop targeted for the TS_id to be deleted set in the setting value 110 exists, the process proceeds to S611. Otherwise, the process proceeds to S612. Proceed to

  S611: Delete the TS loop targeted for the deletion target TS_id in the NIT detected in S610, and proceed to S612.

  S612: The BIT in the TS input in S601 is read, and if it is detected that there is a broadcast loop targeted for the broadcast_id to be deleted set in the setting value 110, the process proceeds to S613. The process proceeds to S614.

  S613: The broadcaster loop targeted for the deletion target broadcast_id in the BIT detected in S612 is deleted, and the process proceeds to S614.

  S614: The SDT in the TS input in S601 is read, and if it is detected that the SDT is the deletion target TS_id set in the setting value 110, the process proceeds to S615, and if not, the process proceeds to S616. .

  S615: The SDT detected in S614 is deleted, and the process proceeds to S616.

  S616: The SDT in the TS input in S601 is read, and if it is detected that there is a service loop targeted for the service_id to be deleted set in the setting value 110, the process proceeds to S617. Otherwise, the process proceeds to S618. Proceed to

  S617: Delete the service loop for the deletion target service_id in the SDT detected in S616, and proceed to S618.

  S618: The EIT in the TS input in S601 is read, and if it is detected that the EIT is the deletion target TS_id or service_id set in the setting value 110, the process proceeds to S619. Proceed to S620 of 6.

  S619: The EIT detected in S618 is deleted, and the process proceeds to S620.

  S620: All PSI / SI in TS input in S601 are read, and if it is detected that an emergency information descriptor is arranged in each descriptor loop, the process proceeds to S621. Otherwise, S624 is performed. Proceed to

  S621: Delete the service_id loop for the deletion target service_id from the emergency information descriptor of the descriptor loop detected in S620, and proceed to S622.

  S622: If it is detected that no service_id loop exists in the emergency information descriptor processed in S621, the process proceeds to S623, and if not, the process proceeds to S624.

  S623: The emergency information descriptor detected in S622 is deleted, and the process proceeds to S624.

  S624: All PSI / SI in the TS input in S601 are read, and if it is detected that the CA service descriptor is arranged in each descriptor loop, the process proceeds to S625. Otherwise, S628 is performed. Proceed to

  S625: Delete the service_id loop for the deletion target service_id from the CA service descriptor of the descriptor loop detected in S624, and proceed to S626.

  S626: If it is detected that no service_id loop exists in the CA service descriptor processed in S625, the process proceeds to S627. Otherwise, the process proceeds to S628.

  S627: The CA service descriptor detected in S626 is deleted, and the process proceeds to S628.

  S628: All PSI / SI in the TS input in S601 are read, and if it is detected that a service list descriptor is arranged in each descriptor loop, the process proceeds to S629. Otherwise, S632 is performed. Proceed to

  S629: The service_id loop targeted for the deletion target service_id is deleted from the service list descriptor of the descriptor loop detected in S628, and the process proceeds to S630.

  S630: If it is detected that no service_id loop exists in the service list descriptor processed in S629, the process proceeds to S631, and if not, the process proceeds to S632.

  S631: The service list descriptor detected in S630 is deleted, and the process proceeds to S632.

  S632: Read all PSI / SI in TS input in S601, and if it is detected that an event group descriptor is arranged in each descriptor loop, the process proceeds to S633, and if not, S636 Proceed to

  S633: Delete the service_id loop targeted for the service_id or TS_id to be deleted from the event group descriptor of the descriptor loop detected in S632, and proceed to S634.

  S634: If it is detected that no service_id loop exists in the event group descriptor processed in S633, the process proceeds to S635. Otherwise, the process proceeds to S636 in FIG.

  S635: The event group descriptor detected in S634 is deleted, and the process proceeds to S636 in FIG.

  S636: All PSI / SI in TS input in S601 is read, and link descriptors in which transport_stream_id and service_id respectively equal to TS_id or service_id to be deleted are set as link destinations in the respective descriptor loops are arranged. If it is detected that the operation has been performed, the process proceeds to S637; otherwise, the process proceeds to S638.

  S637: Delete the link descriptor from the descriptor loop detected in S636, and proceed to S638.

  S638: All PSI / SI in TS input in S601 is read, and hyperlink descriptors in which transport_stream_id and service_id respectively equal to TS_id or service_id to be deleted are set as hyperlink destinations in the respective descriptor loops If it is detected that is placed, the process proceeds to S639, and if not, the process proceeds to S640.

  S639: The hyperlink descriptor is deleted from the descriptor loop detected in S638, and the process proceeds to S640.

  S640: The TS is output to the other TS information deletion function 112.

  In the other TS information deletion function 112, SDT and EIT (table_id information set in advance as a table of the other TS in the setting value 113) for the other TS in the TS input from the non-retransmission service deletion function 109 ) Is deleted. Also, the SDT and EIT (table_id table set as a table to be output in advance as the SI dedicated TS in the set value 113) for the NIT, BIT, and own TS are transmitted to the SI dedicated TS transmission server 200. Then, the TS is output to the TS transmission function 114.

  A processing flow example of the other TS information deletion function 112 will be described with reference to FIG.

  S701: The TS is received from the non-retransmission service deletion function 109, and the process proceeds to S702.

  S702: When all PSI / SI in TS input in S701 are read and it is detected that a table of table_id set as a table of other TS is arranged in the setting value 113, the process goes to S703. If not, the process proceeds to S704.

  S703: The PSI / SI information detected in S702 is deleted, and the process proceeds to S704.

  S704: When all PSI / SI in the TS input in S701 are read and it is detected that a table of table_id set as a table to be output by the SI dedicated TS is arranged in the set value 113, S705 If not, the process proceeds to S706.

  S705: The table detected in S704 is transmitted to the SI dedicated TS transmission server 200, and the process proceeds to S706.

  S706: The TS is output to the TS transmission function 114.

  The TS transmission function 114 outputs the input TS to the IP network 300.

  The SI dedicated TS transmission server 200 multiplexes SI information received from the other TS information deletion function 112 of the plurality of transmission side devices 100 into one TS and outputs the multiplexed information to the IP network 300. At this time, for NIT, SDT, and EIT, based on the table_id conversion rule shown in FIG. 11 set in advance in the setting value 201, the local network and other networks and other networks and other tables and local TS (table of the actual table) In some cases, conversion into table_id (in the other table) for TS is performed.

  When table_id conversion is performed for all PSI / SI, CRC error detection of the PSI / SI is recalculated, and the CRC_32 in the PSI / SI is overwritten.

  Next, a processing flow for each functional block of the receiving side device 400 will be described.

  The reception function 401 receives a TS from the IP network 300 and outputs it to the PSI / SI processing function 402.

  The PSI / SI processing function 402 extracts information necessary for video reproduction and information necessary for generating a program guide from the PSI / SI information included in the TS input from the reception function 401, and the playback function 403 and the program guide display, respectively. The data is transmitted to the function 404, and the TS is output to the reproduction function 403. At this time, when each TS operates without any information (other table) targeted for other TSs, and does not wait for reception of information targeted for other TSs, and information of other TSs is required In this case, the SI dedicated TS is received by sending the SI dedicated TS reception start notification and the reception end notification to the SI dedicated TS receiving function 405, and the information and program table necessary for video reproduction are received in the same manner as the PSI / SI of each TS. Information necessary for generation is extracted and transmitted to the reproduction function 403 and the program guide display function 404, respectively.

  When the SI dedicated TS reception function 405 receives the SI dedicated TS reception start notification from the PSI / SI processing function 402, the SI dedicated TS reception function 405 starts receiving the SI dedicated TS from the SI dedicated TS transmission server 200 and outputs the SI dedicated TS to the PSI / SI processing function 402. . Further, when the SI dedicated TS reception end notification is received from the PSI / SI processing function 402, the reception of the SI dedicated TS from the SI dedicated TS transmission server 200 is ended, and the output to the PSI / SI processing function 402 is also stopped.

  The playback function 403 performs video playback using the TS received from the PSI / SI processing function 402 and information necessary for video playback, and displays the screen.

  The program guide display function 404 generates a program guide using information necessary for generating the program guide received from the PSI / SI processing function 402 and displays it on the screen.

  This makes it possible to reduce the amount of information to be transmitted and effectively use the transmission band when changing the transmission method from broadcast to IP at the relay stage when retransmitting a digital broadcast transmitted by radio waves. Become.

  Next, when retransmitting digital broadcasts transmitted by radio waves in simultaneous IP retransmission or pre-stored IP retransmission, information that becomes unnecessary due to differences in transmission methods and transmission services (channels) An embodiment of the present invention will be described in which the amount of transmission can be reduced by deleting it, the transmission band can be effectively used, and the network operation cost can be reduced.

Example 1
When the present invention is used for IP simultaneous retransmission, as shown in FIG. 9, broadcasting station equipment 801, digital broadcast wave 802, transmission server 803, multicast stream 804, receiver 805, SI dedicated TS transmission server 806, SI dedicated It consists of a TS multicast stream 807.

  The broadcast station facility 801 has a function of sending a digital broadcast wave 802 including a broadcast program. The transmission server 803 includes the transmission-side device 100 of FIG. 1 and has a function of receiving a digital broadcast wave 802, converting the digital broadcast wave 802 into a multicast stream 804, and transmitting the multicast stream 804.

  The receiver 805 includes the reception-side device 400 of FIG. 1 and has a function of receiving the SI-dedicated TS multicast stream 807 from the SI-dedicated TS transmission server 806 in addition to the function of receiving, reproducing, and displaying the multicast stream 804.

Hereinafter, the system operation in this embodiment in the simultaneous IP retransmission will be described.
(1) A digital broadcast wave 802 carrying broadcast program information is sent from the broadcast station facility 801.
(2) The transmission server 803 receives the broadcast wave 802, performs the processing of the transmission side apparatus 100 described with reference to FIG. 1, converts it into a multicast stream 804, and transmits it. At this time, SI information is transmitted to the SI dedicated TS transmission server 806.
(3) The SI dedicated TS transmission server 806 performs the processing described in the SI dedicated TS transmission server 200 in FIG. 1, receives SI information from a plurality of transmission servers 803, multiplexes them into one SI dedicated TS, and performs SI processing. It is converted into a dedicated TS multicast stream 807 and transmitted.
(4) The receiver 805 receives the multicast stream 804 from the transmission server 803 and the SI dedicated TS multicast stream 807 from the SI dedicated TS transmission server 806, performs the processing of the receiving side apparatus 400 described in FIG. To do.

(Example 2)
When the present invention is used for pre-storage type IP retransmission, as shown in FIG. 10, it is composed of a transmission server 901, a multicast stream 902, a receiver 903, an SI dedicated TS transmission server 904, and an SI dedicated TS multicast stream 905. .

  The sending server 901 includes the sending-side device 100 shown in FIG. 1, and has a function of converting a TS accumulated in advance into a multicast stream 902 and sending it.

  The receiver 903 includes the receiving-side device 400 of FIG. 1 and has a function of receiving the SI-dedicated TS multicast stream 905 from the SI-dedicated TS transmission server 904 in addition to the function of receiving, reproducing, and displaying the multicast stream 902.

Hereinafter, the system operation in the present embodiment in the pre-storage type IP retransmission will be described.
(1) The transmission server 901 performs processing of the transmission-side apparatus 100 described with reference to FIG. 1 on the TS accumulated in advance, converts it into a multicast stream 902, and transmits it. At this time, SI information is transmitted to the SI dedicated TS transmission server 904.
(2) The SI dedicated TS transmission server 904 performs the processing described in the SI dedicated TS transmission server 200 in FIG. 1, receives SI information from a plurality of transmission servers 901, multiplexes it into one SI dedicated TS, and performs SI processing. It is converted into a dedicated TS multicast stream 905 and transmitted.
(3) The receiver 903 receives the multicast stream 902 from the transmission server 901 and the SI-dedicated TS multicast stream 905 from the SI-dedicated TS transmission server 904, performs the processing of the receiving-side apparatus 400 described in FIG. To do.

  Further, a part or all of the functions of each means in the digital broadcast distribution system for IP transmission according to the present embodiment can be configured by a computer program, and the present invention can be realized by executing the program using the computer. It goes without saying that the procedure in the digital broadcast distribution method in the IP transmission according to the present embodiment can be configured by a computer program, and the program can be executed by the computer. Readable recording media such as FD (Floppy (registered trademark) Disk), MO (Magneto-Optical disk), ROM (Read Only Memory), memory card, CD (Compact Disk) -R It can be recorded on OM, DVD (Digital Versatile Disk) -ROM, CD-R, CD-RW, HDD, removable disk, etc., and stored or distributed. It is also possible to provide the above program through a network such as the Internet or electronic mail.

DESCRIPTION OF SYMBOLS 100 ... Sending side apparatus 101 ... Program content 102 ... Reproduction | regeneration function 103 ... Antenna 104 ... Tuner 105 ... Rain corresponding broadcast deletion function 106,111 ... Memory | storage part 107 ... Transmission path specific information deletion function 108,110,113,201 ... Set value 109 ... Service not to be reproduced deletion function 112 ... Other TS information deletion function 114 ... TS transmission function 200, 806, 904 ... SI dedicated TS transmission server 300 ... IP network 400 ... Reception side device 401 ... Reception function 402 ... PSI / SI processing Function 403 ... Playback function 404 ... Program guide display function 405 ... SI dedicated TS reception function 803, 901 ... Transmission server 804, 902 ... Multicast stream 805, 903 ... Receiver 807, 905 ... SI dedicated TS multicast stream

Claims (10)

A digital broadcast distribution system for IP transmission that includes a transmission-side device and a reception-side device, and transmits digital broadcasts over an IP network,
The sending device is:
With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for deleting information related to the rain corresponding broadcast,
Transmission path specific information deleting means for deleting transmission path specific information by radio waves from the TS,
Non-retransmission service deletion means for deleting information of non-retransmission service from the TS; and
Other TS information deleting means for deleting information for other TS from the TS,
A TS sending means for sending the TS from which each information has been deleted by the rain corresponding broadcast deleting means, a transmission line specific information deleting means, a non-retransmission service deleting means and another TS information deleting means to the IP network. A digital broadcast distribution system in IP transmission characterized by the above. The rain corresponding broadcast deletion means is:
It is determined whether or not a hierarchical transmission descriptor indicating that the PMT (Program Map Table) included in the TS is a rain-capable broadcast ES (Elementary Stream) is included,
When the hierarchical transmission descriptor is included, the elementary_PID described in the ES loop in which the descriptor is arranged is stored as the filtering target PID in the first storage unit,
Delete the ES loop;
Delete all hierarchical transmission descriptors in the PMT;
2. The digital broadcast distribution system for IP transmission according to claim 1, wherein TS packets of all filtering target PIDs stored in the first storage unit are deleted. The transmission path specific information deleting means is
When the conditional access method is changed, EMM (Entitlement Management Message) operation is not performed, and table_id information indicating that the EMM is set is provided.
If a satellite distribution system descriptor is located in the PSI / SI of the TS, delete the descriptor;
If the CA_EMM_TS descriptor is placed in the PSI / SI of the TS, delete the descriptor,
2. The digital broadcasting in IP transmission according to claim 1, wherein when the table of table_id that matches the table_id set in the first setting unit is arranged in the TS, the EMM is deleted. Distribution system. The non-retransmission target service deleting means includes:
A second setting means in which the service_id to be deleted, the TS_id to be deleted, and the broadcast_id to be deleted are set;
Second storage means for storing PMTs and filtering target PID lists for all service_id services included in the TS,
The PMT in the TS is read and compared with the PMT stored in the second storage means. If the description contents are different, the PMT in the second storage means is overwritten on the read PMT value and stored. And
All PMTs stored in the second storage means are compared, and PIDs that are described in the PMT targeted for the service_id to be deleted and are not described in the PMTs targeted for the service_id that is not the deletion target are PIDs for filtering Save as a list,
From the TS,
TS packet of PID described in the filtering target PID list stored in the second storage means,
A PMT for the service_id to be deleted set in the second setting means,
A program loop for the service_id to be deleted set in the second setting means in the Program Association Table (PAT);
TS loop for TS_id to be deleted set in the second setting means in the Network Information Table (NIT),
Broadcaster loop targeted for the broadcast_id to be deleted set in the second setting means in BIT (Broadcaster Information Table),
SDT targeted for the TS_id to be deleted set in the second setting means,
A service loop for the service_id to be deleted set in the second setting means in the SDT;
EIT (Event Information Table) for TS_id or service_id to be deleted set in the second setting means,
A service_id loop for the service_id to be deleted set in the second setting means of the emergency information descriptor in the PSI / SI;
An emergency information descriptor when no service_id loop exists in the emergency information descriptor;
A service_id loop for the service_id to be deleted set in the second setting means in the CA service descriptor in the PSI / SI;
CA service descriptor when no service_id loop exists in the CA service descriptor,
A service_id loop for the service_id to be deleted set in the second setting means in the service list descriptor in the PSI / SI;
A service list descriptor when no service_id loop exists in the service list descriptor;
A loop of service_id for the TS_id or service_id to be deleted set in the second setting means of the event group descriptor in the PSI / SI;
An event group descriptor when no service_id loop exists in the event group descriptor;
A link descriptor in which transport_stream_id and service_id equal to TS_id or service_id to be deleted set in the second setting means in PSI / SI are set as link destinations,
And transport_stream_id equal to the TS_id or service_id to be deleted set in the second setting means and the hyperlink descriptor in which service_id is set as a hyperlink destination in the PSI / SI, respectively. The digital broadcast distribution system for IP transmission according to claim 1. An SI-dedicated TS transmission server that is provided outside the transmission-side device, multiplexes SI information received from other TS information deletion means of a plurality of transmission-side devices into one TS, and outputs it to the IP network;
The other TS information deleting means
A third setting unit in which table_id as a table of another TS and table_id as a table to be output in the SI dedicated TS are respectively set;
Delete the table of other TS set in the third setting means from the TS,
In the TS, when there is a table to be output by the SI dedicated TS set in the third setting means, the table is sent to the SI dedicated TS transmission server,
The receiving side device
Receiving means for receiving a TS sent from the sending side device;
SI dedicated TS receiving means for receiving the SI dedicated TS transmitted from the SI dedicated TS transmission server;
PSI / SI processing means for processing each information of the SI dedicated TS obtained from the SI dedicated TS receiving means when information of the TS received by the receiving means or other TS is necessary, The digital broadcast distribution system for IP transmission according to claim 1. With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for executing the rain corresponding broadcast delete step for deleting the information related to the rain corresponding broadcast,
Transmission path specific information deletion means for executing a transmission path specific information deletion step for deleting transmission path specific information by radio waves from the TS,
Non-retransmission target service deletion means for executing a non-retransmission target service deletion step of deleting information on services not targeted for retransmission from the TS; and
Other TS information deletion means for executing another TS information deletion step of deleting information targeted for other TS from the TS,
A TS for executing a TS sending step of sending a TS from which each information has been deleted by the rain-compatible broadcast deleting means, transmission path specific information deleting means, non-retransmission service deleting means and other TS information deleting means to the IP network A digital broadcast distribution method in IP transmission in which a digital broadcast is IP-transmitted from a transmission-side device having a transmission means to a reception-side device via an IP network,
The rain corresponding broadcast deletion step includes:
Determining whether a PMT (Program Map Table) included in the TS includes a hierarchical transmission descriptor indicating that it is an ES (Elementary Stream) for rain
When the hierarchical transmission descriptor is included, storing the elementary_PID described in the ES loop in which the descriptor is arranged in the first storage unit as a filtering target PID;
Deleting the ES loop;
Deleting all hierarchical transmission descriptors in the PMT;
A digital broadcast distribution method for IP transmission, comprising: deleting TS packets of all filtering target PIDs stored in the first storage unit. With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for executing the rain corresponding broadcast delete step for deleting the information related to the rain corresponding broadcast,
Transmission path specific information deletion means for executing a transmission path specific information deletion step for deleting transmission path specific information by radio waves from the TS,
Non-retransmission target service deletion means for executing a non-retransmission target service deletion step of deleting information on services not targeted for retransmission from the TS; and
Other TS information deletion means for executing another TS information deletion step of deleting information targeted for other TS from the TS,
A TS for executing a TS sending step of sending a TS from which each information has been deleted by the rain-compatible broadcast deleting means, transmission path specific information deleting means, non-retransmission service deleting means and other TS information deleting means to the IP network A digital broadcast distribution method in IP transmission in which a digital broadcast is IP-transmitted from a transmission-side device having a transmission means to a reception-side device via an IP network,
The transmission path specific information deletion means includes a first setting means for setting table_id information indicating that it is an EMM when the conditional access method is changed and the operation of the EMM (Entitlement Management Message) is not performed.
The transmission path specific information deletion step includes:
Determining whether a satellite distribution system descriptor is located in the PSI / SI of the TS;
Deleting the satellite distribution system descriptor if it is located;
Determining whether a CA_EMM_TS descriptor is placed in the PSI / SI of the TS;
Deleting the CA_EMM_TS descriptor if it is located;
A step of reading a TS packet of a PID in which an EMM in the TS is transmitted and determining whether or not a table of table_id matching the table_id set in the first setting means is arranged;
A digital broadcast distribution method in IP transmission, comprising: deleting the EMM when the table of matching table_id is arranged. With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for executing the rain corresponding broadcast delete step for deleting the information related to the rain corresponding broadcast,
Transmission path specific information deletion means for executing a transmission path specific information deletion step for deleting transmission path specific information by radio waves from the TS,
Non-retransmission target service deletion means for executing a non-retransmission target service deletion step of deleting information on services not targeted for retransmission from the TS; and
Other TS information deletion means for executing another TS information deletion step of deleting information targeted for other TS from the TS,
A TS for executing a TS sending step of sending a TS from which each information has been deleted by the rain-compatible broadcast deleting means, transmission path specific information deleting means, non-retransmission service deleting means and other TS information deleting means to the IP network A digital broadcast distribution method in IP transmission in which a digital broadcast is IP-transmitted from a transmission-side device having a transmission means to a reception-side device via an IP network,
The non-retransmission target service deletion means includes a second setting means in which a service_id to be deleted, a TS_id to be deleted, and a broadcast_id to be deleted are set,
Second storage means for storing PMTs for all services of service_id included in the TS,
The non-retransmission target service deleting step includes:
The PMT in the TS is read and compared with the PMT stored in the second storage means. If the description contents are different, the PMT in the second storage means is overwritten on the read PMT value and stored. And steps to
All PMTs stored in the second storage means are compared, and PIDs that are described in the PMT targeted for the service_id to be deleted and are not described in the PMTs targeted for the service_id that is not the deletion target are PIDs for filtering A step of overwriting as a list,
Deleting a TS packet of a PID described in the filtering target PID list stored in the second storage means;
Determining whether or not there is a PMT targeted for the service_id to be deleted set in the second setting means in the PMT of the TS, and deleting the PMT if it exists;
A step of determining whether or not there is a program loop targeted for the service_id to be deleted set in the second setting means in a PAT (Program Association Table), and deleting the program loop if it exists When,
A step of determining whether or not a TS loop targeted for the TS_id to be deleted set in the second setting means exists in a network information table (NIT), and deleting the TS loop if it exists When,
In BIT (Broadcaster Information Table), it is determined whether or not there is a broadcaster loop targeted for the broadcast_id to be deleted set in the second setting means, and if it exists, the broadcaster loop is deleted And steps to
Determining whether or not there is an SDT in the TS for the TS_id to be deleted set in the second setting means, and deleting the SDT if it exists;
Determining whether a service loop targeted for the service_id to be deleted set in the second setting means exists in the SDT, and deleting the service loop if it exists;
A step of determining whether or not an EIT (Event Information Table) targeted for the TS_id or service_id to be deleted set in the second setting means exists in the TS, and deleting the EIT if it exists When,
It is determined whether or not an emergency information descriptor is arranged in the PSI / SI, and when arranged, a service_id loop for the service_id to be deleted set in the second setting unit and the service_id Deleting an emergency information descriptor without a loop of
It is determined whether or not a CA service descriptor is arranged in the PSI / SI. When the CA service descriptor is arranged, a service_id loop for the service_id to be deleted set in the second setting unit and the service_id Deleting a CA service descriptor without a loop of:
It is determined whether or not a service list descriptor is arranged in the PSI / SI. When the service list descriptor is arranged, a service_id loop for the service_id to be deleted set in the second setting unit and the service_id Deleting a service list descriptor without a loop of
It is determined whether or not an event group descriptor is arranged in the PSI / SI, and if it is arranged, a service_id loop for the service_id or TS_id to be deleted set in the second setting unit and Deleting an event group descriptor without the loop of service_id;
It is determined whether or not a link descriptor in which transport_stream_id and service_id equal to the TS_id or service_id to be deleted set in the second setting unit is set as a link destination is arranged in the PSI / SI, Deleting the link descriptor if it is located;
It is determined whether or not a hyperlink descriptor in which transport_stream_id and service_id that are equal to the TS_id or service_id to be deleted set in the second setting unit is set as a hyperlink destination is arranged in the PSI / SI. And deleting the hyperlink descriptor if it is located;
A digital broadcast distribution method in IP transmission, comprising: With TS (transport stream) obtained by receiving digital broadcast waves or playing program content as input,
From the TS, the rain corresponding broadcast deletion means for executing the rain corresponding broadcast delete step for deleting the information related to the rain corresponding broadcast,
Transmission path specific information deletion means for executing a transmission path specific information deletion step for deleting transmission path specific information by radio waves from the TS,
Non-retransmission target service deletion means for executing a non-retransmission target service deletion step of deleting information on services not targeted for retransmission from the TS; and
Other TS information deletion means for executing another TS information deletion step of deleting information targeted for other TS from the TS,
A TS for executing a TS sending step of sending a TS from which each information has been deleted by the rain-compatible broadcast deleting means, transmission path specific information deleting means, non-retransmission service deleting means and other TS information deleting means to the IP network A sending-side device comprising sending means;
Digital broadcasting from an SI-dedicated TS transmission server that is provided outside the transmission-side device and that multiplexes SI information received from a plurality of transmission-side devices and other TS information deletion means into one TS and outputs it to the IP network A digital broadcast distribution method in IP transmission for transmitting IP to an apparatus on the receiving side via an IP network,
The other TS information deleting means includes third setting means in which table_id as a table of another TS and table_id as a table output in the SI dedicated TS are respectively set.
The other TS information deleting step includes:
Determining whether or not a table of another TS set in the third setting unit is arranged in the TS, and deleting the table of the other TS when arranged;
In the TS, it is determined whether or not a table to be output by the SI dedicated TS set in the third setting means is arranged, and when the table is arranged, the table is sent to the SI dedicated TS transmission server. And steps to
A receiving step in which the receiving means of the receiving device receives the TS sent from the sending device;
An SI dedicated TS receiving step in which the SI dedicated TS receiving means of the receiving side apparatus receives the SI dedicated TS sent from the SI dedicated TS sending server;
The PSI / SI processing means of the receiving side apparatus processes each information of the SI dedicated TS obtained from the SI dedicated TS receiving means when information of the TS or other TS received by the receiving means is necessary. A digital broadcast distribution method in IP transmission, comprising an SI processing step. A digital broadcast distribution program in IP transmission that causes a computer to function as each means according to any one of claims 1 to 5.

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