WO2006109359A1

WO2006109359A1 - Broadcast content update method and update program

Info

Publication number: WO2006109359A1
Application number: PCT/JP2005/007037
Authority: WO
Inventors: Satoko Miki; Yukio Yokoyama; Masashi Hidai; Yuka Fujita
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2005-04-11
Filing date: 2005-04-11
Publication date: 2006-10-19

Abstract

A transmission system creates update content data for modifying any on of the content data which have been already broadcasted. Here, according to an identifier of the update content data created, an update program is created and transmitted. A reception system receives the update program and judges whether an object to be updated exists in accumulated content data according to the update program and the accumulated content data identifier. If an object to be updated exists, its content data is updated to the update content data.

Description

Specification

Broadcast content update method and program

Technical field

[0001] The present invention relates to a broadcast content update method and an update program for updating the content of broadcast content resources in server-type broadcast.

Background art

[0002] Regarding digital TV broadcasting, there is an advisory to the Information and Communications Council of the Ministry of Internal Affairs and Communications Policy Bureau of Japan (June 25, 2001) "Towards the realization of server-type broadcasting". Among these, a server-type broadcast receiving system that uses the advantages of digital broadcasting, such as automatic program storage, scene search, and digest viewing, is being studied with a receiver having a large-capacity storage function. In server-type broadcasting, image Z audio, data broadcasting data, and metadata are handled as one content and viewed using multiple resources included in the content. The content of the resource may be updated (added, deleted, changed) even after the broadcast ends. As a conventional broadcast content update method, for example, a data broadcast content update method is disclosed in Patent Document 1. It states that broadcast content is updated by using the module identification number and version information included in the data broadcast during the content broadcast. Further, Patent Document 2 proposes a method for solving content updates using update information.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-235928

Patent Document 2: Japanese Patent Laid-Open No. 2001- 211431

[0004] However, the broadcast content update method proposed in the above-mentioned document adopts a method of updating using a module version that is a unique number in a data event being broadcast, so that data There is a problem that the content cannot be updated after the broadcast when the event period disappears. In addition, even when trying to update content with update information after storage, only documents with a tree structure can be updated with scripts.

[0005] The present invention has been made to solve the above-described problems, and the receiving system side The purpose is to obtain a broadcast content update method and its update program that can automatically update the broadcast content data stored in step 1 after the broadcast, regardless of the file format under the broadcast's intention. Disclosure of the invention

[0006] The broadcast content update method according to the present invention is a broadcast content update method for updating content data that is broadcast by a transmission system and that is also received and stored in a reception system and that also has content for identifying information that identifies the content. The transmission system creates content to update any content in the content data that has already been broadcast and its update information data, and at that time, the created update data. An update program is created and transmitted based on the identification information of the content data for use, and the receiving system determines that the content data to be updated is contained in the content data accumulated during the previous broadcast based on the received update program. Whether the received update program has identification information and stored content data identification information Judgment Te, in which the content data to be updated is updated in the update Conte Nddeta accumulate when the updated co Ntenddeta was present.

[0007] Thus, after content data provided by broadcasting is accumulated on the receiving system side, the content data can be automatically updated according to the intention of the broadcast provider and regardless of the file format. Since the content data has identification information such as a content identifier, the update program uses the identification information to identify the content data stored on the receiving system side even after broadcasting. Therefore, it is possible to update the content data after storage.

Brief Description of Drawings

FIG. 1 is a block diagram showing a system configuration for realizing a broadcast content update method according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart showing a processing procedure by the update program according to the first embodiment of the present invention.

FIG. 3 is an explanatory view showing the definition of a broadcast extension function “getSTBContentList” according to the first embodiment of the present invention. FIG. 4 shows an extension function for broadcasting “Embodiment 1”

It is explanatory drawing which shows the definition of "getContentDatafromRenewalProgram".

FIG. 5 is an explanatory diagram showing the definition of a broadcast extension function “replaceContent” according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a description example of the update program according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing the definition of a function “addContent ()” for performing a new content insertion according to Embodiment 1 of the present invention.

FIG. 8 is a block diagram showing a system configuration for realizing a broadcast content update method according to Embodiment 2 of the present invention.

9 is an explanatory diagram showing the definition of a broadcast extension function according to the second embodiment _"g EtContentDatafromServer" of the present invention.

FIG. 10 is an explanatory diagram showing a DSMCC section structure of a transmission method according to Embodiment 3 of the present invention.

FIG. 11 is an explanatory diagram showing the structure of the private section of the transmission method according to Embodiment 3 of the present invention.

FIG. 12 is an explanatory diagram showing an example of a message screen according to the fourth embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

[0009] The best mode for carrying out the present invention will be described below with reference to the accompanying drawings in order to explain the present invention in more detail.

Embodiment 1.

FIG. 1 is a block diagram showing the configuration of a transmission system and a reception system for realizing a broadcast content update method according to Embodiment 1 of the present invention.

In the figure, a transmission system 100 that transmits broadcast content and the like, and a reception system 200 that receives, stores, and updates the broadcast content 105 and the like that are also transmitted by the transmission system 100 are shown. Here, the power using the word “system” means a set of individual functions, and is not necessarily limited to a single device that contains all the constituent functions.

[0010] Here, main data used in the present invention will be described. The broadcast content 105 is data transmitted in at least one broadcast, and is composed of content data of a broadcast program divided by time, for example. The content data includes identification information for identifying the content of the program itself (content) and content such as a content identifier.

The update part 102 is an update content data created for the broadcast side to change any of the content data constituting the broadcast content 105 (content data to be updated) after the broadcast ends. The data is provided with identification information such as a content identifier. Further, the content data to be updated and the identification information of the update part 102 are associated with each other with the same or the same part. Therefore, the update processing of the broadcast content is to replace the update portion (or update content data) 102 with the content data to be updated.

The update program 104 is a program that is transmitted from the transmission system 100 to the reception system 200 in a broadcast format. The update program 104 checks the content data to be updated received and accumulated in the reception system 200 during the previous broadcast, and the update part 102 given later. It has an update processing module that executes the update process to be replaced with. In the case of the first embodiment, the update program 104 is transmitted and received in a form including the update part 102.

Next, each functional unit in FIG. 1 will be described.

In the transmission system 100, the storage unit 101 is means for storing the broadcast content 105, its updated part 102, etc. in advance before transmission. The update program creation unit 103 is a means for creating an update program 105 for performing update processing using the update part 102 on the receiving system 200 side based on the update part 102. The transmission unit 106 is means for transmitting the broadcast content 105 and the update program created by the update program creation unit 103.

In the receiving system 200, the receiving unit 201 is a means for receiving the broadcast content 105 and the update program 104 transmitted by the transmitting system 100. The accumulated data extracting unit 202 is a means for extracting content data to be accumulated from the broadcast content 105 received by the receiving unit 201. The accumulation processing unit 203 is means for accumulating the extracted content data in the accumulation unit 206 and creating a content list at that time. Update program extraction unit 204 Is means for extracting the update program 104 from the data received by the receiving unit 201. Based on the extracted update program 104, the update program processing unit 205 examines the content data to be updated from the data stored in advance in the storage unit 206, and changes the update target content data to the update part 102 for update. It is means to do. The accumulation unit 206 is a means for storing the content data output from the accumulation processing unit 203, the content list, and the content data updated by the update program processing unit 205.

Next, an operation for broadcasting the broadcast content and storing it in the receiving system will be described. In the transmission system 100, the broadcast content 105 stored from the storage unit 101 is read and transmitted by the transmission unit 106. The transmitted broadcast content 105 is received by the receiving unit 201 of the receiving system 200. Next, the storage data extraction unit 202 extracts the content data of the program to be stored, for example, the program reserved for recording by the user, in the receiving system 200. The extracted content data is stored in the storage unit 206 by the storage processing unit 203 associating the content data file with identification information such as a content identifier.

[0014] In the transmission system 100 after the end of the broadcast, when the broadcast content 105 that has been broadcast is made up of one of the content data V, the update portion 102 is stored in the storage unit 101. . The update program creation unit 103 creates the update program 104 based on the update part 102 read from the storage unit 101. The description format of the update processing module of the update program 104 may be a binary format or a script. In particular, in the case of a script, ECMA (European Computer Manufacturers' Association) script, JAVA (registered trademark) script, or ECMA ^ script is extended for digital broadcasting and is defined by BML (Broadcasting Markup Language). You can also use an ECMA script that includes an extension function for broadcasting. The update program 104 created in this way is transmitted to the reception system 200 side by the transmission unit 106.

Next, update processing in the receiving system 200 will be described.

In the reception system 200, the update program extraction unit 204 extracts the update program 104 from the received data at the reception unit 201 and passes it to the update program processing unit 205. Update program In the program processing unit 205, the update processing module of the extracted update program 104 performs update processing according to the procedure shown in FIG.

First, content data stored in the storage unit 206 is acquired (step ST1), and it is determined whether there is content data to be updated by the update program 104 (step ST2). This determination is, for example, a process of acquiring a content list in which stored content data files and content identifiers are associated, and checking for the presence of a content identifier or the like that includes the updated portion 102 in the list. Next, if the content data to be updated is included in the determination, the content data to be updated in the storage unit 206 is rewritten and updated by the update portion 102 included in the update program 104 (step ST3). In this case, the content list that associates the content data file and the content identifier is also updated. On the other hand, if it is determined in step ST2 that the content data to be updated is not included, the process ends without doing anything.

Here, when BML is used, an update program is created with the following script.

Figures 3, 4 and 5 show the newly defined script functions as broadcasting extension functions. The update module described using these functions is shown in Fig. 6. Each function and program is described below. However, the function name is shown for convenience, and it is not always necessary to use such a function name. In addition, the functions of each function may be defined by other functions, and some of these functions may be defined as a single function. “GetSTBContentList () j” shown in FIG. 3 is a function for acquiring a content list of content stored in the storage unit 206 of the receiving system 200. This content list is created by the storage processing unit 203 when content data is stored. The stored content data identifier returned as a return value is included in the content data of the broadcast content 105 at the time of broadcasting. The ability to acquire content data stored in the storage unit 206 as a content list may be a function to acquire each stored content data itself.In this case, as an example of a BML script described later, storage Each piece of content data After obtaining it, it will be judged whether it should be updated.

“GetContentDatafromRenewalProgram ()” shown in FIG. 4 is a function for obtaining the update part 102 included in the update program 104 received by the receiving system 200. In the update program processing unit 205, the update part 104 is updated from the update program 104. This is a byte string of content data obtained by separating 102. Also, “replaceContent (;)” shown in FIG. 5 is a function that replaces and updates the updated content data with the update target content data stored in the storage unit 206. The argument “cont _en tId” is the content identifier of the updated content data, and “contentData”

This is a byte string of updated content data obtained by “getContentDatafromRenewalProgram ()”. Returns 1 if it succeeds and 1 if it fails.

FIG. 6 shows an example of the update program. The update program shall pass the content identifier (newContentld) of the content data to be updated as an existing argument. The update program first acquires a content list of content data stored in the receiving system by “getSTBContentList ()”. Since the list also has content identification U child power, the content identifier in the list is compared with the content identifier ( _new ContentId) of the update program 104. Is shown in Figure 4.

The update part 102 included in the update program 104 is acquired by “getContentDatafromRenewalProgram ()”, and this acquired data is replaced with the update target content data in the storage unit 206 using “replaceContent (;)” in FIG. .

The above description may be performed by another method that is related to an update process in which the data content that has already been stored is replaced with the update part 102. For example, as shown in FIG. 7, by defining _a function “ _a ddCont _en t ()” for newly inserting content, the update portion 102 included in the update program 104 is newly stored in the storage unit 206, and the content Try to update the list.

The power receiving system 200 described above for the update processing by the update program in the receiving system 200 can be considered to have a function of reproducing and viewing the content data stored in the storage unit 206. Their functions are generally known Therefore, explanation is omitted here.

[0020] As described above, according to the first embodiment, in the broadcast content data, when the update part (update content data) is transmitted after the broadcast, an update program for the data is created by the transmission system. The update program is operated on the receiving system, and the content data to be updated is updated in the update part. Therefore, the content data can be updated on the receiving side in accordance with the intention of the broadcasting side. In addition, the update program can be used even after the end of the broadcast. For example, the content data has identification information such as a content identifier, so that the content data can be specified even after storage on the receiving system side. Therefore, the content data after storage can be updated. In addition, the receiving system can automatically update the content data by using the update program created and transmitted in relation to the update part. Furthermore, by writing the update program in a script, it is possible to describe the update program regardless of the system configuration of the receiving system. Furthermore, by describing the update program in BML, the program update operation can be performed as part of the content data, and a reception system that guarantees uniform operation within the reception system can be configured. it can.

[0021] Embodiment 2.

FIG. 8 is a block diagram showing a system configuration for realizing a broadcast content updating method according to Embodiment 2 of the present invention. In the figure, functional parts that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and in principle, descriptions of those parts are omitted. In FIG. 8, the update part notification information 107 and the update data server 300 are newly added to the configuration of FIG. 1, and the update part 102 is not included in the update program 104 and is provided outside. Put it in the f row!

The update data server 300 is means for storing the update part 102 that is the content data updated in the transmission system 100 and distributing the corresponding update part 102 in response to a request from the reception system 200. The update part notification information 107 is information including identification information for identifying content such as a content identifier of the update part 102.

[0022] Next, the operation will be described. Transmission / reception, storage, and update prod Since the data transmission / reception is the same as in the first embodiment, the description thereof is omitted. On the other hand, when the execution module of the update program 104 is created or the update program 104 is a script, the content of the script is different from that of the first embodiment, and the processing operation in the receiving system 200 is different.

When the transmission system 100 updates the content data in the broadcast content 105 that has already been broadcast, the update portion notification information 107 is stored in the storage portion 101 together with the update portion 102. The update program creation unit 103 creates the update program 104 based on the update part notification information 107. On the other hand, the update part 102 is sent to the update data server 300 and stored therein.

[0023] Next, when the receiving system 200 receives the update program 104, the update program processing unit 205 has content data to be updated based on the update processing module of the update program in the storage unit 206. Find out if you want to. If there is content data to be updated, the corresponding update portion 102 is acquired from the update data server 300 on the external communication. Here, when the update processing module capability ¾ ML is used for description, for example, the broadcast extension function defined in FIG. 9 is used. The function “getContentDatafromServer () j obtains the update part 102 using the content identifier and the URL of the update data server 300. When the update program processing part 205 obtains the update part 102, the update part 102 stores the update part 102 in the storage part 206. Update accumulated content data to be updated.

[0024] As described above, according to the second embodiment, the update part is not included in the update program and is transmitted through another communication route, so that the update program is compared with the case of the first embodiment. The amount of data it occupies can be greatly reduced, and the transmission bandwidth can be reduced accordingly, and even when the updated part is large content that includes video, updates from broadcast stations can be easily performed.

[0025] Embodiment 3.

In this third embodiment, the power to explain an example of the transmission method for transmitting the update program on the private data in the DSMCC section is shown in Figure 10. Figure 10 shows the DSMCC (Digital Storage Media) The structure of the (Command and Control) section is shown. Figure 11 shows the definition of the data structure of the private section defined in the DSMCC section! /, And the update program data is placed in the “renewal_module”.

Next, the operation will be described.

The transmission system 100 transmits the update program 104 created by the update program creation unit 103 from the transmission unit 106. The transmission unit 106 converts the update program into the “private_data” structure shown in FIG. 11, and inserts it into the DSMCC section as “privete_data”. As the DSMCC section transmission method, the same method as that used for digital broadcasting such as BS, CS, and terrestrial can be applied. The transmitted DSMCC section data is received by the receiving unit 201 on the receiving system 200 side, and then extracted by the update program extracting unit 204. At this time, the update program extraction unit 204 extracts the DSMCC section data, and selects one having “table_id” of “0x3E”. Next, the “renewal_module” portion is extracted from the selected data and used as an update program.

[0027] As described above, according to the third embodiment, since the update program is transmitted using the pipeline data in the DSMCC section, the technology sharing with the existing digital broadcasting can be performed, and the transmission, The expansion of both receiving systems can be suppressed.

[0028] Embodiment 4.

FIG. 12 is an explanatory diagram showing an example of a message screen for requesting user permission when updating content according to the fourth embodiment of the present invention. In the fourth embodiment, an example of a method for obtaining user permission when an update program updates content will be described.

In the receiving system 200, when the update program 104 determines that the update program 104 has content data to be updated corresponding to the update part 102 in the storage unit 206, the update program processing unit 205 performs the update operation in FIG. A message as shown is presented to the user by display means (not shown). The user sees this message, determines whether or not the accumulated content data to be updated can be updated, and inputs the instruction. The update program processing unit 205 executes or cancels the update according to the user's instruction input.

[0029] As described above, according to the fourth embodiment, the update program processing unit performs the update target copy. When updating content data, a message for inquiring whether update is possible or not is displayed on the display means in advance, and update processing is performed only when there is permission from the user. Can be renewed without compromising the right to use.

Industrial applicability

As described above, the broadcast content update method according to the present invention enables the broadcast content data stored on the receiving system side to be automatically updated after broadcasting regardless of the file format under the intention of the broadcast side. Therefore, it will contribute to the future development of server-type broadcast reception systems.

Claims

The scope of the claims

[1] Transmission system power An update method of broadcast content that updates content data that is broadcast and received and stored in a receiving system, and that identifies content and identification information.

The transmission system creates content for changing any of the already broadcast content data and update content data that also has its identification information power. At that time, the identification information of the created update content data Create and send updates based on

Based on the received update program, the receiving system determines whether or not the content data to be updated is contained in the content data stored at the time of the previous broadcast, and the identification information of the update program and the stored content data An update method for broadcast content, characterized in that, when there is content data to be updated, the content data to be updated is updated and stored in the update content data.

[2] The broadcast content update method according to claim 1, wherein the update program is created so as to include update content data to be transmitted.

[3] The content data for update is stored in an update data server provided outside the transmission system and the reception system, and from the update data server via a communication path different from broadcasting in response to a request from the reception system. 2. The broadcast content updating method according to claim 1, wherein the broadcast content is updated.

[4] When the content data to be updated is updated, the receiving system displays a message asking whether or not the update is possible in advance on the display means, and performs the update process only when permission is received from the user. The broadcast content update method according to claim 1, wherein:

[5] A broadcast content update program for updating content data serving as identification information for identifying content and the content that is also transmitted and received and stored in the reception system.

Any content data already broadcast by the transmission system When the content to be changed and the update content data that has the identification information power are created, it is created and transmitted based on the identification information of the content data for update and received by the receiving system! / Determining whether or not there is content data to be updated in the content data received and stored at the time of the previous broadcast using the identification information of the content data for update and the identification information of the stored content data And an update processing module that executes a process of updating and storing the content data to be updated in the content data for update when content data to be updated exists. .

6. The broadcast content update program according to claim 5, including update content data to be transmitted.

7. The broadcast content update program according to claim 6, wherein the update processing module is written in a script.

[8] The program for updating broadcast contents according to claim 7, wherein the update processing module is written in ECMA ^ Talibut.

[9] The broadcast content update program as set forth in claim 8, wherein the ECMA ^ script is described in BML used in data broadcasting.

10. The broadcast content update program according to claim 5, wherein the update processing module is inserted into the private data of the DSMCC section and transmitted.