JP4116281B2 - Data broadcasting TS packet organizing apparatus and method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data broadcast TS packet organizing apparatus that organizes data broadcast transmission contents by combining a data broadcast TS packet of its own station and a data broadcast TS packet transmitted from a key station, for example, in a local terrestrial digital broadcast station Regarding the method.
[0002]
[Prior art]
When terrestrial digital broadcasting is put to practical use, data broadcasting is planned along with this broadcasting. As in the case of conventional terrestrial analog broadcasting, it is planned that a key station and a local station are connected via a network so that broadcast content (program material) distributed from the key station can be broadcast on the local station.
[0003]
However, the data broadcast content from the key station may not necessarily match the broadcast content of the local station. There is also a request to give priority to the broadcast content of the local station and to provide the broadcast content from the key station later. For this reason, automatic composition processing such as broadcasting the broadcast content from the key station as it is in real time, accumulating it for later broadcasting, and rejecting it when judged unnecessary is required in the local station.
[0004]
[Problems to be solved by the invention]
By the way, content for data broadcasting in terrestrial digital broadcasting is distributed in a TS (Transport Stream) packet format. In this format, a PID (packet identification code) is added to each packet. However, this PID is for distinguishing packets and does not indicate the contents. For this reason, on the local station side, when the TS packet is received from the key station, it is necessary to take out the stream from each packet and determine the contents of the contents, and then perform the above-described organization, which is complicated. Will be.
[0005]
The present invention solves the above-described problems, and can easily perform processing such as real-time transmission, storage, and rejection of a data broadcast TS packet given from the outside automatically without developing it into a stream. An object is to provide a knitting apparatus and method.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the data broadcasting TS packet organization apparatus and method according to the present invention are: (1) TS (Transport Stream) packets distributed as data broadcasting contents, and TS packets used in broadcasting in advance. PID registration means for registering PID (packet identification information), PID extraction means for extracting PID from the distributed TS packet, and PID registered in the PID registration means, the PID extraction means A PID determination means for determining whether or not there is information that matches the extracted PID, and if the matching PID is not obtained by this means, the distributed TS packet is rejected and a matching PID is obtained. In this case, TS packet distribution means used as data broadcast content is provided.
[0007]
(2) In particular, the PID registration means registers through / storage information specifying whether to transmit or store TS packets having the registered PID in association with the PID, and the PID determination The means obtains through / accumulation information related to the matched PID from the PID registration means when there is a PID that matches the extracted PID in the registered PID, and the TS packet distribution means is the PID determination means When a matching PID is obtained, the input TS packet is distributed to the through system / storage system based on the through / storage information acquired by the PID determination means.
[0008]
(3) In the configuration of (2), further comprising storage means for storing the TS packets distributed to the storage system, wherein the PID registration means is a material for identifying the content content of the TS packet in the registered PID It is assumed that information is associated and registered, and when there is a PID that matches the PID extracted in the PID, the PID determination means acquires material information related to the matched PID from the PID registration means, The storage unit adds the material information acquired by the PID determination unit to the PID of the TS packet to be stored, creates a directory corresponding to the management information, and stores the TS packet in the directory. To do.
[0009]
(4) In the configuration of (2), further comprising storage means for storing the TS packets distributed to the storage system, and material information for identifying content contents is added to the PID of the TS packet The storage means creates a directory corresponding to the management information and stores TS packets in the directory.
[0010]
(5) The configuration of (2) further includes storage means for storing the TS packets distributed to the storage system, wherein the PID registration means registers the registered PID in association with broadcast time frame information of the TS packets. The PID determination means acquires broadcast time frame information related to the matched PID from the PID registration means when there is a PID that matches the PID extracted in the PID, and the storage means Is characterized in that it reads out and outputs the accumulated TS packets based on the broadcast time frame information acquired by the PID determination means.
[0011]
(6) In the configuration of (2), the storage means further includes means for restoring and storing TS packets into a monomedia file.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0013]
FIG. 1 is a block diagram showing a configuration of an embodiment of a data broadcast TS packet organization apparatus according to the present invention. This apparatus is provided in a local station connected to a key station via a network (not shown).
[0014]
In FIG. 1, a PID extraction unit 11 inputs a TS packet sequence for data broadcasting sent from a key station, and extracts a PID from each packet. The PID extracted here is sent to the PID determination unit 12. The PID determination unit 12 refers to a PID / material ID table 13 created in advance and searches for a registered PID that matches the input PID, whether there is a corresponding PID, a material (content) ID corresponding to the corresponding PID, and a through ID. / Determine storage, broadcast time frame, etc.
[0015]
On the other hand, the TS packet output from the PID extraction unit 11 is supplied to the packet output switching unit 14. The packet output switching unit 14 rejects the input TS packet when there is no corresponding PID as a result of the determination by the PID determining unit 12, and when the corresponding PID is present and through is designated, the input TS packet is set to the through system. When the corresponding PID exists and accumulation is specified, the input TS packet is output to the PID rewriting unit 15.
[0016]
The PID rewriting unit 15 embeds the material ID corresponding to the input TS packet acquired by the PID determination unit 12 in the PID. The output of the PID rewriting unit 15 is supplied to the TS packet storage unit 16. The TS packet storage unit 16 includes an information recording medium (not shown), creates a directory in the information recording medium for each material ID embedded in the PID of the input TS packet, and stores the input TS packet in the directory. . Then, based on the broadcast time frame acquired by the PID determination unit 12, the corresponding TS packets are sequentially read out from the recording medium and output.
[0017]
Through TS packets and accumulated TS packets output from the scheduling apparatus having the above configuration are sent to a data broadcast transmission apparatus (not shown) and broadcast toward the service area of the local station in a packet format or a stream format.
[0018]
The process of the knitting device having the above configuration will be specifically described with reference to FIG.
[0019]
As an example, the key station distributes TS packets (PID: 600, PID: 700) of the data broadcast content “drama” in the time frame from 10:00 to 11:00, and from 11:00 to 12:00. In the state where TS packets (PID: 800, PID: 900) of “soccer” are distributed, the local station A produces “baseball” (PID: 100, PID: 200)), the “drama” from the key station is broadcasted, and the local station B broadcasts the “drama” from the key station in the time frame from 10:00 to 11:00, and from 11:00 to 12: “Movies” (PID: 300, PID: 400) distributed from the key station in the past in the time frame up to 00 are broadcast, and “soccer” from the key station is not broadcast in the local stations A and B The think.
[0020]
First, the local stations A and B receive the time frame of the data broadcast content scheduled to be distributed from the key station and the PID information attached to the TS packet of each content, and correspond to the content scheduled to be broadcast at the local station. In the PID, the relationship between the material ID and the through / accumulated information to be managed by the own station is registered in the table 13. FIG. 2 shows the distribution contents of the key stations and the table contents of the local stations A and B.
[0021]
In the local station A, “baseball” produced by the local station is broadcast in the time frame from 10:00 to 11:00. When receiving a “drama” TS packet distributed from 10:00 to 11:00 in this time frame, the PID determination unit 12 determines whether the PID of each TS packet is registered in the table 13. At this time, since the PID of “drama” is registered in the table 13 of the local station A, the PID determination unit 12 obtains the material ID, through / accumulation, and broadcast time frame information corresponding to the corresponding PID from the table 13. Receive and output to the corresponding processing unit as appropriate.
[0022]
At this time, since the through / accumulation information designates accumulation, the packet output switching unit 14 outputs the input TS packet to the accumulation system. The PID rewriting unit 15 embeds the material ID in the PID of the TS packet output to the storage system and outputs it to the TS packet storage unit 16. The TS packet storage unit 16 creates a directory from the material ID embedded in the PID of the input TS packet, and stores the TS packet in the directory. The accumulated “drama” TS packets are read out in the broadcast time frame 11:00 to 12:00 and transmitted as a data broadcast.
[0023]
Subsequently, when the TS packet of “soccer” distributed from 11:00 to 12:00 is received, the PID determination unit 12 does not have a corresponding PID in the table 13, so the packet output switching unit 14 is instructed to reject it. Send. As a result, the packet output switching unit 14 rejects TS packets of “soccer” that are not used in broadcasting.
[0024]
On the other hand, when receiving the “drama” TS packet distributed from 10:00 to 11:00, the local station B determines whether the PID of each TS packet is registered in the table 13 in the PID determination unit 12. At this time, since the PID of “drama” is registered in the table 13 of the local station B, the PID determination unit 12 receives information corresponding to the corresponding PID from the table 13 and outputs it to the corresponding processing unit as appropriate. At this time, since the through / accumulation information designates through, the packet output switching unit 14 outputs the input TS packet to the through system. As a result, the “drama” TS packet is broadcast in real time.
[0025]
Subsequently, when the TS packet of “soccer” distributed from 11:00 to 12:00 is received, the PID determination unit 12 does not have a corresponding PID in the table 13, so the packet output switching unit 14 is instructed to reject it. Send. Thereby, in the packet output switching part 14, the input TS packet which is not used by broadcasting is discarded. Instead, the TS packet storage unit 16 has been distributed from the key station in the past, reads the “movie” TS packet from the “movie” directory of the information recording medium, and transmits it as a data broadcast.
[0026]
Next, PID rewriting of the PID rewriting unit 15 will be described with reference to FIG.
[0027]
When content is restored, a data broadcast TS packet distributed from a key station is composed of two sections, a DII section and a DDB section. As described above, time difference transmission is required, and when content is stored, an index (such as a directory in the case of storage) linked to organization in time difference transmission is required. Therefore, the PID rewriting unit 15 adds the content control descriptor shown in FIG. 3 to the PrivateDataByte area of the DII section. In this descriptor, the 128-bit field of Content_ID represents the management ID (material ID) of the content transmitted in the carousel. The TS packet storage unit 16 creates a directory as a storage destination of TS packets sent by the carousel according to the material ID.
[0028]
As described above, according to the data broadcasting TS packet organizing apparatus of the present embodiment, the through, storage, and rejection of each TS packet distributed from the key station is automatically performed using each PID without developing the stream. Can be done automatically.
[0029]
In the above-described embodiment, the PID rewriting unit 15 is provided in the knitting apparatus and the content control descriptor is added to the PrivateDataByte area of the DII section. If it is added on the station side, the PID rewriting of the knitting apparatus becomes unnecessary.
[0030]
In the above embodiment, the TS packet storage unit 16 stores TS packets for time difference transmission as they are. However, the TS packet storage unit 16 has a function of decoding and storing in a restored state to a monomedia file such as a monomodule file. If it is provided, handling becomes easy when it is reused as data broadcasting contents. FIG. 4 shows the flow of processing for content restoration.
[0031]
In FIG. 4, a TS packet is read (S1), a section restoration process is executed (S2), and the processes of steps S1 and S2 are repeated until the restoration is completed (S3). When the restoration is completed, a module restoration process is executed (S4), and the process of step S4 is repeated until the restoration is completed (S5). When the module restoration process is completed, a mono module file is obtained.
[0032]
In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made.
[0033]
【The invention's effect】
As described above, according to the present invention, data broadcasting TS packet organization that can automatically perform processing such as real-time transmission, accumulation, and rejection of data broadcasting TS packets given from the outside automatically without developing the stream. An apparatus can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of a data broadcast TS packet organization apparatus according to the present invention.
FIG. 2 is a view showing the distribution contents of key stations and table contents of local stations A and B for explaining a specific example of the organization process according to the embodiment;
FIG. 3 is an exemplary view showing a content control descriptor to be added to the PID in the PID rewriting unit of the embodiment.
FIG. 4 is a flowchart showing a flow of processing for content restoration according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... PID extraction part 12 ... PID determination part 13 ... PID / material ID table 14 ... Packet output switching part 15 ... PID rewriting part 16 ... TS packet storage part

Claims (6)

Is delivered as the data broadcast content from another station, PID takes in TS (Transport Stream) packets that will be distinguished by (packet identification information), the data broadcast TS packet organizing unit for selectively sending the TS packet specified by the organization ,
A PID (packet identification information) of a TS packet to be used in the local station data broadcast is registered in advance, and a through / accumulation designating whether the TS packet having the registered PID is to be sent through or accumulated and time-sequentially sent. Information, PID registration means for registering material information for identifying the content content of the TS packet in the registered PID in association with the PID, and
PID extraction means for extracting PID from the distributed TS packet;
It is determined whether there is information that matches the PID extracted by the PID extraction means in the PID registered in the PID registration means. If there is a matching PID, the PID registration means matches. Through / accumulation information related to PID, PID determination means for acquiring material information,
If the matching PID is not obtained by this means, the distributed TS packet is rejected. If the matching PID is obtained, based on the through / accumulation information obtained by the PID determination means, TS packet distributing means for distributing the distributed TS packets as through data / storage system as data broadcast content;
Rewriting means for describing the material information acquired by the PID determination means in a content control descriptor and adding it to the private area in the section of the TS packet allocated to the storage system;
Storing means for storing TS packets to which content control descriptors have been added by the rewriting means ,
The storage means reads material information from the content control descriptor added to the private area of the TS packet, creates a directory corresponding to the material information, stores the TS packet in the directory, and organizes it. A data broadcasting TS packet organization apparatus, wherein the TS packet is read from a designated directory and output . The PID registration means registers the broadcast PID information of the TS packet material information in association with the registered PID,
The PID determination means acquires broadcast time frame information related to the matched PID from the PID registration means when there is a PID that matches the extracted PID in the registered PID,
2. The data broadcast TS packet organization apparatus according to claim 1, wherein the storage means reads out and outputs the stored TS packets based on the broadcast time frame information acquired by the PID determination means.   2. The data broadcast TS packet organization apparatus according to claim 1, wherein the storage means further comprises means for restoring and storing TS packets into a monomedia file. Is delivered as the data broadcast content from another station takes the TS (Transport Stream) packets that will be distinguished by PID (packet identification information), one that selectively transmits the TS packets specified by knitting,
A PID (packet identification information) of a TS packet to be used in the local station data broadcast is registered in advance, and a through / accumulation designating whether the TS packet having the registered PID is to be sent through or accumulated and time-sequentially sent. Information, a composition method used in a data broadcasting TS packet organizing apparatus provided with a PID registration unit for registering material information for identifying content contents of a TS packet in association with the PID.
A PID extraction step of extracting a PID from the distributed TS packet;
It is determined whether there is information that matches the PID extracted in the PID extraction step among the PIDs registered in the PID registration unit. When there is a matching PID, the PID registration unit matches the PID. PID determination step for acquiring through / accumulation information and material information related to PID;
If a matching PID is not obtained in this PID determination step, the distributed TS packet is rejected. If a matching PID is obtained, it is based on the through / accumulation information acquired in the PID determination step. A TS packet distribution step of distributing the distributed TS packets as a data broadcast content to a through system / storage system;
A rewriting step of describing material information acquired by the PID determination means in a content control descriptor and adding it to a private area in a section of a TS packet distributed to the storage system;
Storing a TS packet to which a content control descriptor is added in the rewriting step, and
The storage step, the reads material information from the added content control descriptor private area of the TS packet, creates a directory corresponding to the material information, and stores the TS packets in the directory, by knitting A TS packet organization method for data broadcasting, wherein the TS packet is read out from a specified directory and output . When the PID is registered, broadcast time frame information of TS packets is associated with the registered PID and registered,
When there is a PID that matches the extracted PID in the registered PID, the PID determination step acquires broadcast time frame information related to the matched PID from the registered PID,
5. The data broadcast TS packet organization method according to claim 4, wherein the storage step reads out and outputs the stored TS packets based on the broadcast time frame information acquired in the PID determination step.   5. The data broadcasting TS packet organization method according to claim 4, wherein the storage step further restores and stores the TS packet into a monomedia file.

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