JP2014057210A - Data broadcasting storage device and control method and program therefor, and video contents provision system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data broadcasting storage device capable of reducing cost required for preparation of a contents file to be stored in a server, in offering a program with data broadcasting through a VOD service.SOLUTION: The data broadcasting storage device includes: a contents data acquisition section that acquires contents data from broadcast wave of a program with data broadcasting including information on modules and repeatedly transmitted; a module construction section that constructs modules from contents data and outputs the modules as module data; and a data broadcasting file conversion section that converts module data into a predetermined type of contents file.

Description

  The present invention relates to a data broadcast storage device, a control method for the data broadcast storage device, a program, and a video content providing system. In particular, the present invention relates to a data broadcast storage device that implements a VOD (Video On Demand) service for data broadcasting, a control method for the data broadcast storage device, a program, and a video content providing system.

  In recent years, there are various modes for viewing video content. Among these are VOD services. The VOD service is provided by a cable television station or an IPTV (Internet Protocol TeleVision) service provider. In many cases, the video content at that time is mainly package content represented by a movie or the like.

  On the other hand, a television broadcast program created by a television station is often viewed as a live broadcast by streaming distribution. Therefore, when the user cannot view the television broadcast in real time, it is necessary to record the streaming distribution using an STB with a recording function (Set Top Box). However, circuit components (hardware) used for STBs with a recording function are expensive and have a problem of high maintenance costs, and are not widely used.

  Therefore, a service for providing video content by a business operator who records a television program and provides the recorded program by VOD is becoming popular mainly in the North American market. Such a service is referred to as “missing program viewing service”, “network personal video recorder service”, or the like.

  In addition to television programs composed of video and audio, there are data broadcasts intended to transmit digital data. In Japan, when such a data broadcast is provided to a user via IPTV, a method is provided in which the data broadcast is provided not by a stream but by a file on a server (Non-Patent Document 1). The method defined in Non-Patent Document 1 is one of the purposes for reducing the data communication band on the network. In this document, the method defined by Non-Patent Document 1 is a pseudo data broadcasting method, and the following description will be given.

  In the pseudo data broadcasting system, it is necessary to store in advance a data broadcasting content file to be added to a television program in a server of a service provider. In addition, when viewing the video stream, the STB that has received an operation of displaying the data broadcast on the television screen acquires the content file of the data broadcast from the server and displays the data broadcast screen.

  Further, Non-Patent Document 2 discloses a technical method for transmitting data broadcast by a DSM-CC (DIGITAL STORE MEDIA-COMMAND AND CONTROL) data carousel.

  Furthermore, Patent Document 1 discloses a technique for reducing the amount of data to be stored by managing the updating of content data of data broadcasts transmitted by data carousel.

JP 2006-0503316 A

“IPTV regulation CDN scope service approach specification (IPTVFJ STD-0006 1.3 edition)”, IPTV Forum Japan Limited, IPTV Forum Japan, July 30, 2010 "Data broadcasting encoding and transmission system in digital broadcasting", ARIB STD-B24 5.5 edition, 3rd volume, The Japan Radio Industry Association

  Each disclosure of the above prior art document is incorporated herein by reference. The following analysis was made by the present inventors.

  When a pseudo-data broadcasting method is used in a VOD service that records a television program broadcast by BS (Broadcast Satellite) broadcast, CS (Communications Satellite) broadcast, terrestrial digital or cable television, etc. and provides it to the user, the following problems occur. Arise.

  As described above, in the pseudo data broadcasting system, it is necessary to create a content file in advance and store it in the server. This content file must be created in a description language called BML (Broadcast Markup Language). In other words, when a recorded program is provided by the VOD service, it is necessary to create a separate BML file.

  On the other hand, the data broadcast added to the broadcast program is sent in MPEG2-TS (Moving Picture Expert Group 2-Transport Stream) format, and the data file in this format is directly used as a content file (BML file) for pseudo data broadcasting. ) Cannot be used. Therefore, the service provider needs to obtain the corresponding data broadcast content file from the broadcasting station or content provider in advance, or to create the content file independently. However, by taking such measures, man-hours and costs for providing services are increasing.

  Therefore, a data broadcast storage device, a data broadcast storage device control method, a program, and a video content providing system that reduce the cost required to create a content file to be stored in a server when a program with data broadcast is provided by the VOD service are desired. It is.

  According to a first aspect of the present invention, the module is constructed from the content data acquisition unit for acquiring the content data repeatedly transmitted including the information on the module from the broadcast wave of the program with data broadcasting, and the content data. A data broadcast storage device comprising a module construction unit that outputs module data and a data broadcast file conversion unit that converts the module data into a content file having a predetermined format is provided.

  According to a second aspect of the present invention, a content data acquisition step for acquiring content data repeatedly transmitted including broadcast-related information from a broadcast wave of a program with data broadcasting, and the module is constructed from the content data Then, there is provided a data broadcast storage device control method including a module construction step of outputting as module data, and a data broadcast file conversion step of converting the module data into a content file of a predetermined format.

According to a third aspect of the present invention, a content data acquisition process for acquiring repeatedly transmitted content data including information related to a module from a broadcast wave of a program with data broadcasting, and constructing the module from the content data And a program for causing a computer controlling the data broadcast storage device to execute a module construction process for outputting as module data and a data broadcast file conversion process for converting the module data into a content file of a predetermined format. The
This program can be recorded on a computer-readable storage medium. The storage medium can be non-transient such as a semiconductor memory, a hard disk, a magnetic recording medium, an optical recording medium, or the like. The present invention can also be embodied as a computer program product.

  According to the fourth aspect of the present invention, the data broadcast server that accepts a data broadcast acquisition request from a user, and the content that contains the information about the module and repeatedly transmits content data from the broadcast wave of the program with data broadcast A data acquisition unit, a module construction unit that constructs the module from the content data and outputs the module data, and outputs an identifier corresponding to the module data, and a content file in a predetermined format. A data broadcast file conversion unit for converting to, an update file number that can uniquely identify the content file corresponding to the identifier, and a time based on the start time of the program with data broadcast, corresponding to the identifier Module related to the time when the updated module was updated A data broadcast update management unit that generates module update information including information related to the module update time, and outputs the content file corresponding to the module update time to the data broadcast server based on the module update information There is provided a video content providing system including a data broadcast storage device including a data broadcast file storage unit.

  According to each aspect of the present invention, a data broadcast storage device, a method for controlling a data broadcast storage device, a program, and a program for reducing the cost required to create a content file to be stored in a server when a program with a data broadcast is provided by a VOD service A video content providing system is provided.

It is a figure for demonstrating the outline | summary of one Embodiment. 1 is a diagram illustrating an example of a video content providing system including a data broadcast storage device 1 according to a first embodiment. It is a figure which shows an example of the data broadcast component ES multiplexed by the broadcast wave. 3 is a flowchart showing an example of the operation of the data broadcast storage device 1. It is a figure which shows an example of module information. It is a figure which shows an example of module update information. 3 is a flowchart showing an example of the operation of the data broadcast storage device 1. It is a figure which shows an example of difference module update information. It is a figure which shows an example of an internal structure of the data broadcast storage apparatus 5 which concerns on 2nd Embodiment. FIG. 6 is a diagram for explaining the operation of a module aggregation unit 70.

  First, an outline of an embodiment will be described with reference to FIG. Note that the reference numerals of the drawings attached to the outline are attached to the respective elements for convenience as an example for facilitating understanding, and the description of the outline is not intended to be any limitation.

  As described above, in the pseudo data broadcasting system, it is necessary to create a content file in advance and store it in the server. However, by taking such measures, man-hours and costs related to service provision increase. Therefore, a data broadcast storage device that reduces the cost required to create a content file to be stored in a server when a program with data broadcast is provided by the VOD service is desired.

  Therefore, the data broadcast storage device 100 shown in FIG. 1 is provided as an example. The data broadcast storage device 100 includes information related to a module from a broadcast wave of a program with a data broadcast, acquires a content data that is repeatedly transmitted, constructs a module from the content data, and outputs the module as module data A module construction unit 102 that converts the module data into a content file of a predetermined format.

  The data broadcast storage device 100 extracts content data (for example, data carousel) corresponding to the data broadcast from the broadcast wave of the program with data broadcast, and constructs module data from the extracted content data. Since the module data extracted from the content data cannot be used as it is in the pseudo data broadcast, the data broadcast file exchange unit 103 converts the module data into a content file in a format that can be stored in the data broadcast server. As a result, it is not necessary to obtain a content file to be stored in the server in advance when providing a program with data broadcasting using the VOD service, and the cost required for creating the content file can be reduced.

  Furthermore, the following forms are possible.

  [Mode 1] As in the data broadcast storage device according to the first aspect.

  [Mode 2] The module construction unit outputs an identifier corresponding to the module data, and based on the update file number that can uniquely identify the content file corresponding to the identifier and the start time of the program with data broadcasting Based on the module update information, a data broadcast update management unit that generates module update information including information related to the module update time related to the time when the module corresponding to the identifier is updated, and It is preferable to include a data broadcast file storage unit that outputs the content file corresponding to the module update time to a data broadcast server that has received a data broadcast acquisition request from a user.

  [Mode 3] The content data acquisition unit outputs the content data to the module construction unit when the content data corresponding to one cycle is acquired or when a screen update of data broadcasting is detected. Is preferred.

  [Mode 4] When the content data acquisition unit detects an update of the data event identification included in the content data or detects an update of a module version of a module included in the content data, the content data acquisition unit It is preferable to use screen detection.

  [Mode 5] The data broadcast storage device stores the module update information, and includes the update file number for the data broadcast file storage unit as the viewing time of the program with data broadcast elapses. Preferably, an update time storage unit that outputs a file update request is provided, and the data broadcast file storage unit outputs the content file corresponding to the update file number to the data broadcast server based on the file update request.

  [Mode 6] The data broadcast storage device aggregates the module data by acquiring the module data output by the module construction unit at predetermined intervals, and based on the aggregated module data, It is preferable to provide a module aggregation unit that outputs module update information.

  [Mode 7] The control method of the data broadcast storage device according to the second aspect.

  [Mode 8] In the module construction step, an identifier corresponding to the module data is output, an update file number capable of uniquely specifying the content file corresponding to the identifier, and a start time of the program with data broadcasting is used as a reference Based on the module update information, a data broadcast update management step for generating module update information including information related to the module update time related to the time when the module corresponding to the identifier is updated, and Preferably, the method includes a step of outputting the content file corresponding to the module update time to a data broadcast server that has received a data broadcast acquisition request from a user.

  [Mode 9] Preferably, the content data acquisition step outputs the content data when the content data corresponding to one period is acquired or when a screen update of data broadcasting is detected.

  [Mode 10] When the content data acquisition step detects an update of a data event identification included in the content data, or when an update of a module version of a module included in the content data is detected, It is preferable to use screen detection.

  [Mode 11] Preferably, the method for controlling the data broadcast storage device includes a step of requesting the data broadcast server to output the content file as the viewing time of the program with data broadcast elapses.

  [Mode 12] The control method of the data broadcast storage device is configured to aggregate the module data by acquiring the module data output by the module construction step at a predetermined interval, and to collect the module data. Preferably, a module aggregation step for outputting the module update information is included.

  [Mode 13] The program according to the third aspect.

  [Mode 14] The module construction process outputs an identifier corresponding to the module data, and based on an update file number that can uniquely identify the content file corresponding to the identifier, and a start time of the program with data broadcasting Based on the module update information, a data broadcast update management process for generating module update information including information related to the module update time related to the time when the module corresponding to the identifier is updated, and the module update information. It is preferable to execute a process of outputting the content file corresponding to the module update time to a data broadcast server that has received a data broadcast acquisition request from a user.

  [Mode 15] Preferably, the content data acquisition process outputs the content data when the content data corresponding to one cycle is acquired or when a screen update of data broadcasting is detected.

  [Mode 16] When the content data acquisition process detects an update of a data event identification included in the content data, or detects an update of a module version of a module included in the content data, It is preferable to use screen detection.

[Mode 17] It is preferable that the program executes a process of requesting the data broadcast server to output the content file as the viewing time of the program with data broadcast elapses.
[Mode 18] The program aggregates the module data by obtaining the module data output by the module construction process at a predetermined interval, and the module update information is based on the aggregated module data. Is preferably executed.

  [Mode 19] The video content providing system according to the fourth aspect.

  [Mode 20] including a video server that receives playback control of video content of the program with data broadcast from a user, wherein the data broadcast storage device stores the module update information and at a video playback time output by the video server. Accordingly, an update time storage unit that outputs a file update request including the update file number to the data broadcast file storage unit is provided, and the data broadcast file storage unit is configured to update the update based on the file update request. It is preferable that the content file corresponding to the file number is output to the data broadcasting server.

  Hereinafter, specific embodiments will be described in more detail with reference to the drawings.

[First Embodiment]
The first embodiment will be described in more detail with reference to the drawings.

  FIG. 2 is a diagram illustrating an example of a video content providing system including the data broadcast storage device 1 according to the present embodiment.

  The video content providing system includes a data broadcast storage device 1, a data broadcast server 2, a video server 3, and an STB 4.

  The data broadcast storage device 1 receives a broadcast wave of a program with a data broadcast, and creates and stores a content file to be provided to the user. The data broadcast server 2 receives a data broadcast distribution request from the STB 4 and transmits a data broadcast file corresponding to the request to the STB 4. The video server 3 receives a video playback request (video playback control) from the user and provides a video stream. The STB 4 used by the user is connected to the data broadcast server 2 and the video server 3 via a network. The STB 4 receives a user operation and outputs a request corresponding to the operation to the data broadcast server 2 or the video server 3.

  The data broadcast storage device 1 includes a data carousel acquisition unit 10, a module construction unit 20, a data broadcast file conversion unit 30, a data broadcast update management unit 40, a data broadcast file storage unit 50, and an update time storage unit 60. , Is composed of.

  The data carousel acquisition unit 10 acquires a data carousel of a data broadcast multiplexed on a television broadcast. The data carousel acquisition unit 10 corresponds to the content data acquisition unit 101 described above. The data carousel acquisition unit 10 includes a buffer therein. When a data carousel corresponding to one cycle is stored in the buffer, the data carousel is output to the module construction unit 20.

  Here, the data carousel is composed of two types of data blocks, a DII (Download Info Indicator) message and a DDB (Download Data Block) message.

  The DII message includes a module identification that identifies all modules included in the data carousel. Each module is composed of a plurality of DDB messages. Each module stores various elements constituting the data broadcast content. For example, BML files, mono media files such as bitmap images and audio, binary data files describing updated stock prices, etc. are included in the constituent elements. That is, a module is a meaningful content in data broadcasting, and data obtained by converting the content into a file is module data.

  FIG. 3 is a diagram illustrating an example of a data broadcast component ES (Elementary Stream) multiplexed on a broadcast wave. FIG. 3 shows three data broadcast components ES (0x40, 0x50, 0x51). As shown in FIG. 3, a data broadcast is transmitted by a plurality of data broadcast components ES and is divided in time by a program unit or a unit such as a corner in a program. At that time, the data carousel is individually transmitted for each of the plurality of data broadcasting components ES constituting the data broadcasting, and is handled as a data event by dividing the data carousel in terms of time.

  In addition, the data broadcast content added to the broadcast program may be updated as the program content progresses. There are two types of update methods for data broadcasting content: a case where the entire content is updated so as to be replaced with another content, and a case where some elements of the content such as stock prices and news are updated. When the entire content is updated to be replaced with another content, the data event ID is updated. When some elements of the content are updated, the module version is updated. When such an update (providing data broadcasting according to the progress of the program) is performed by the pseudo data broadcasting method, it is necessary to update the content file stored in the data broadcasting server 2 according to the progress of the program. Furthermore, since the progress of the program is different for each user and it is necessary to follow special reproduction such as fast-forwarding, a content file corresponding to the situation in which the user is viewing the program must be created.

 The data carousel acquisition unit 10 monitors whether all the DDB messages constituting each of all the modules described in the DII message have been accumulated, and when all the DDB messages are accumulated, It outputs to the module construction part 20 as a data carousel (DII and DDB).

  Note that, when the data event ID specified in the DII message is updated, the data carousel acquisition unit 10 considers that an update of the data event has occurred in the data broadcasting component. In this case, the data carousel acquisition unit 10 discards the data carousel before update and performs acquisition and output of the data carousel for one cycle again.

  Further, when the module version for the module described in the DII message is updated, the data carousel acquisition unit 10 considers that the module has been updated. In this case, the data carousel acquisition unit 10 discards the DDB message that constitutes the module and accumulates a new DDB message. That is, since the module version is updated and the contents of the module are changed, it is necessary to acquire a new DDB message. The stored DDB message is output to the module construction unit 20 as a data carousel (DII and DDB) of the update module.

  The module construction unit 20 constructs module data such as a BML file, an image, or sound from the data carousel for one cycle or the data carousel of the update module. The module construction unit 20 outputs the constructed module data to the data broadcast file conversion unit 30. Furthermore, the module construction unit 20 outputs information including the module identification corresponding to the constructed module to the data broadcast update management unit 40 as module information. The timing at which module information is output from the module construction unit 20 to the data broadcast update management unit 40 coincides with the timing at which the content of the data broadcast is switched. The module construction unit 20 outputs the module information including the module identification when the data event ID or the module version is updated, which means that the content of the data broadcast is switched. That is, the module construction unit 20 outputs module information at the timing of data broadcast screen update.

  The data broadcast file conversion unit 30 performs data conversion so that the module data output from the module construction unit 20 conforms to the technical specifications for use in IPTV. Technical specifications for use in IPTV are disclosed in Non-Patent Document 1. The file converted by the data broadcast file conversion unit 30 is referred to as a data broadcast content file.

  The data broadcast file conversion unit 30 receives module update information output from the data broadcast update management unit 40 as a file creation instruction. The data broadcast file conversion unit 30 assigns an update file number to the data broadcast content file designated by the module identification included in the received file creation instruction, and stores it in the data broadcast file storage unit 50. The data broadcast file storage unit 50 can uniquely identify the data broadcast content file corresponding to the module identification based on the update file number. The module update information will be described later.

  The data broadcast update management unit 40 receives the module identification output by the module construction unit 20. Whenever the module identification is received, the data broadcast update management unit 40 measures the time when the module corresponding to the module identification is updated, which is the time based on the start time of the program, as the module update time. Each time the data broadcast update management unit 40 receives a module identification, the data broadcast update management unit 40 assigns a file number that can uniquely identify the module data corresponding to the module identification and the data broadcast content file. The file number assigned by the data broadcast update management unit 40 is the aforementioned update file number. The program start time can be known from program schedule information received from an external system or EIT (Event Information Table) schedule information of SI / EPG (Service Information / Electronic Program Guide).

  The data broadcast update management unit 40 outputs information including module identification, module update time, and update file number to the data broadcast file conversion unit 30 and the update time storage unit 60 as module update information. The module update information output to the data broadcast file conversion unit 30 corresponds to the file creation instruction described above. The data broadcast file conversion unit 30 and the update time storage unit 60 that have received the module update information refer to the update file number, so that the module corresponding to the update file number is updated (based on the start time of the program). To know the elapsed time).

  The data broadcast file storage unit 50 stores the data broadcast content file together with the update file number, and every time there is an instruction to output the data broadcast content file with the update file number from the update time storage unit 60, the designated data broadcast content file Is output to the data broadcasting server 2.

  The update time storage unit 60 receives and stores module update information each time the data broadcast update management unit 40 outputs module update information. Further, when the video server 3 is notified of the program ID and video playback time that the user is viewing, the update time storage unit 60 calculates an update file number corresponding to the video playback time of the program. Thereafter, the update time storage unit 60 takes the difference between the module update information stored therein and notifies the data broadcast file storage unit 50 of the difference. The notification from the update time storage unit 60 to the data broadcast file storage unit 50 is the above-described data broadcast content file output instruction.

  The data broadcast server 2 stores the data broadcast content file output from the data broadcast file storage unit 50 therein. The data broadcast server 2 stores the stored data broadcast content file in a data broadcast server area individually prepared for each user, and outputs the stored data broadcast content file based on a data broadcast display request from the STB 4.

  The user uses the STB 4 to connect to the VOD service and operates the remote controller to select VOD content. At this time, the video server 3 sends the stream of the designated video content to the STB 4 when the ID of the recorded program to be played back via the network is designated from the STB 4 and a playback instruction is given.

  Further, the user can acquire the data broadcast content file stored in the data broadcast server 2 and display it on the screen by pressing the data broadcast button on the remote controller. Note that the video server 3 accepts playback control such as playback, pause, termination, fast forward, or rewind of video content. Furthermore, as described above, the video server 3 outputs the playback time (elapsed time from the program start time) of the video content being played back to the update time storage unit 60 as the video playback time.

  Next, the operation of the data broadcast storage device 1 will be described.

  FIG. 4 is a flowchart showing an example of the operation of the data broadcast storage device 1.

  In step S01, the data carousel acquisition unit 10 acquires the data carousel from the broadcast wave, and outputs the data carousel for one cycle to the module construction unit 20 after acquisition. At that time, the data carousel acquisition unit 10 checks whether or not the data event ID has been updated. If it has been updated (step S02, Yes branch), it is considered that the data event in the data broadcasting component has been updated, The data carousel stored in the buffer is discarded (step S03). Thereafter, the process returns to step S01 to reacquire the data carousel.

  Similarly, when the module version of a certain module is updated, the data carousel acquisition unit 10 regards the content of the module as updated and reacquires the data carousel.

  In step S04, the data carousel acquisition unit 10 determines whether or not acquisition of the data carousel has been completed. If it has been completed, the process proceeds to step S05.

  The module construction unit 20 constructs a module from the data carousel when the data carousel for one cycle is obtained from the data carousel acquisition unit 10 or when the data carousel of the updated module is obtained (step S05). Module data (for example, BML file, image, sound, binary data, etc.) is generated (step S06).

  The module construction unit 20 outputs module information including the updated module identification to the data broadcast update management unit 40 at the timing when the module is updated.

  FIG. 5 is a diagram illustrating an example of module information. Note that the service ID shown in FIG. 5 includes information on the original network ID, transport stream ID, and service ID.

  The data broadcast update management unit 40 calculates the elapsed time from the start of the program based on the program schedule information acquired from the outside and the module information, and creates module update information (steps S07 and S08). At that time, the data broadcast update management unit 40 notifies the module update information to the data broadcast file conversion unit 30 and the update time storage unit 60. The update time storage unit 60 manages the notified module update information in units of programs using a unique program ID together with the elapsed time in the program. FIG. 6 is a diagram illustrating an example of module update information.

  In step S09, the data broadcast file conversion unit 30 converts the content file so as to conform to the IPTV standard (creates a data broadcast content file). Further, the data broadcast file conversion unit 30 stores the data broadcast content file together with the corresponding update file number in the data broadcast file storage unit 50 (step S10).

  As described above, the data broadcast storage device 1 according to the present embodiment can store a data broadcast in accordance with the update of the contents. Further, the data broadcast storage device 1 can update the data broadcast content according to the progress of the program when the user views the recorded television program with the data broadcast through the VOD service. For example, in FIG. 3, every time a module version update (data broadcast screen update) occurs, a data broadcast content file is generated and stored in the data broadcast server 2.

  Next, an operation when the user uses the data broadcast storage device 1 will be described. The user can use functions such as a program guide by using the STB 4 and connecting to a portal server (not shown in FIG. 1) provided by the service provider. The user selects a recorded program to be viewed from a program guide or the like.

  When the user performs a playback operation of the recorded program, the portal server instructs the video server 3 to send a video stream to the STB 4. The portal server notifies the update time storage unit 60 of the program ID of the recorded program that the user is viewing. As the recorded program is reproduced, the video server 3 notifies the update time storage unit 60 of the image reproduction time sequentially or at regular intervals. For example, the elapsed time from the start of the program, NPT (Normal Play Time), or the like can be used as the video playback time. Note that the changed time is reflected on the video playback time at that time by an operation such as pause or fast-forward.

  FIG. 7 is a flowchart showing an example of the operation of the data broadcast storage device 1.

  Receiving the notification of the video playback time from the video server 3 (step S11), the update time storage unit 60 obtains a module at the notified time based on the module update information stored therein, and the difference between the module update information is data broadcast. The data broadcast file storage unit 50 is notified as a content file output instruction (step S12). FIG. 8 is a diagram illustrating an example of difference module update information. The difference module update information shown in FIG. 8 is calculated based on the module update information shown in FIG. In the example shown in FIG. 8, in the 45-minute program started from 10:15 on March 1, 2010 shown in the module update information of FIG. 6, at the time when 15 minutes have elapsed from the start of the program, three programs shown in FIG. These modules are update modules.

  In step S13, when the difference broadcast module update information is notified, the data broadcast file storage unit 50 searches for the corresponding data broadcast content file, and the data broadcast server area prepared individually for each user of the data broadcast server 2 To store.

  The data broadcast storage device 1 uses a personal computer, a mobile terminal, or the like, and records various types of information (data broadcast, This can be applied to the usage of presenting subtitles, etc.) as the program progresses.

  As described above, the data broadcast storage device 1 according to the present embodiment generates module data for data broadcasting based on the data carousel extracted from the broadcast wave, and then converts the data to comply with the IPTV standard. And stored in the data broadcasting server 2. That is, it is possible to automatically generate a data broadcast content file for the IPTV pseudo data broadcast system from the data broadcast added to the broadcast program. As a result, it is not necessary to create special data broadcast content for the broadcast program recorded by the service provider, and man-hours and costs can be reduced.

  In addition, the data broadcast storage device 1 can provide data broadcast content while updating each user's program viewing time. Therefore, when a plurality of users individually view VOD content in which a broadcast program is recorded, data broadcast content can be provided to individual users according to the passage of time at the time of broadcasting.

[Second Embodiment]
Next, a second embodiment will be described in detail with reference to the drawings.

  In data broadcasting, there is content (so-called automatic production type content) in which modules are updated in several seconds to several tens of seconds like stock prices and news. In such a data broadcast program, if the data broadcast content file is updated each time the module is updated, it becomes a factor that increases the load on the system. Further, such content as stock prices and news is highly valuable at the time when data broadcasting is transmitted, but it is already past information at the time of recording reproduction, and its utility value is not so high. Therefore, in the data broadcast storage device 5 according to the present embodiment, module updates are collected at regular intervals.

  FIG. 9 is a diagram showing an example of the internal configuration of the data broadcast storage device 5 according to the present embodiment. 9, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted. The difference between the data broadcast storage devices 1 and 5 is that a module aggregation unit 70 is provided.

  The module aggregating unit 70 receives the module information output by the module construction unit 20 and aggregates the module information into the latest module at predetermined time intervals and for each data broadcasting component. Output to 40.

  FIG. 10 is a diagram for explaining the operation of the module aggregation unit 70. In FIG. 10, the solid line ellipse indicates storage of the data broadcast content file corresponding to the aggregated module, and the dotted line ellipse indicates the file stored as the data broadcast content file when the module version is updated. (In fact, it is summarized in the latest module and omitted). In FIG. 10, modules are aggregated at intervals of 15 minutes.

  As described above, the data broadcast storage device 5 according to the present embodiment aggregates modules at regular time intervals, so that even when frequent module updates occur, the load on the system can be suppressed.

  Each disclosure of the cited patent documents and the like cited above is incorporated herein by reference. Within the scope of the entire disclosure (including claims) of the present invention, the embodiments and examples can be changed and adjusted based on the basic technical concept. Various disclosed elements (including each element of each claim, each element of each embodiment or example, each element of each drawing, etc.) within the scope of the claims of the present invention, Selection is possible. That is, the present invention of course includes various variations and modifications that could be made by those skilled in the art according to the entire disclosure including the claims and the technical idea.

1, 5, 100 Data broadcasting storage device 2 Data broadcasting server 3 Video server 4 STB (set top box)
DESCRIPTION OF SYMBOLS 10 Data carousel acquisition part 20, 102 Module construction part 30, 103 Data broadcast file conversion part 40 Data broadcast update management part 50 Data broadcast file storage part 60 Update time storage part 70 Module aggregation part 101 Content data acquisition part

Claims (10)

A content data acquisition unit for acquiring content data that is repeatedly transmitted, including information about modules, from a broadcast wave of a program with data broadcasting;
Constructing the module from the content data and outputting the module data as module data;
A data broadcast file conversion unit for converting the module data into a content file of a predetermined format;
A data broadcast storage device comprising: The module construction unit outputs an identifier corresponding to the module data,
An update file number that can uniquely identify the content file corresponding to the identifier and a module update related to the time when the module corresponding to the identifier is updated, based on the start time of the program with data broadcasting A data broadcast update management unit that generates module update information including information about the time, and
Based on the module update information, a data broadcast file storage unit that outputs the content file corresponding to the module update time to a data broadcast server that has received a data broadcast acquisition request from a user;
The data broadcast storage device according to claim 1.   The content data acquisition unit outputs the content data to the module construction unit when the content data corresponding to one cycle is acquired or when a screen update of data broadcasting is detected. Data broadcasting storage device.   When the content data acquisition unit detects an update of the data event identification included in the content data, or detects an update of a module version of a module included in the content data, the content data acquisition unit detects the screen of the data broadcast. The data broadcast storage device according to claim 3. An update time storage unit that stores the module update information and outputs a file update request including the update file number to the data broadcast file storage unit as the viewing time of the program with data broadcast elapses. Prepared,
The data broadcast storage device according to any one of claims 2 to 4, wherein the data broadcast file storage unit outputs the content file corresponding to the update file number to the data broadcast server based on the file update request.   A module aggregating unit that aggregates the module data by acquiring the module data output by the module construction unit at a predetermined interval and outputs the module update information based on the aggregated module data. The data broadcast storage device according to any one of claims 2 to 5. A content data acquisition step for acquiring content data repeatedly transmitted, including information on modules, from a broadcast wave of a program with data broadcasting;
Constructing the module from the content data and outputting the module data as a module data;
A data broadcast file conversion step of converting the module data into a content file of a predetermined format;
A method for controlling a data broadcast storage device, comprising: Content data acquisition processing for acquiring content data that includes information on modules and is repeatedly transmitted from a broadcast wave of a program with data broadcasting;
A module construction process for constructing the module from the content data and outputting the module data as module data;
A data broadcast file conversion process for converting the module data into a content file of a predetermined format;
For causing a computer that controls the data broadcast storage device to execute the program. A data broadcast server for receiving a data broadcast acquisition request from a user;
A content data acquisition unit for acquiring content data that is repeatedly transmitted, including information about modules, from a broadcast wave of a program with data broadcasting;
The module is constructed from the content data and output as module data, and a module construction unit that outputs an identifier corresponding to the module data;
A data broadcast file conversion unit for converting the module data into a content file of a predetermined format;
An update file number that can uniquely identify the content file corresponding to the identifier and a module update related to the time when the module corresponding to the identifier is updated, based on the start time of the program with data broadcasting A data broadcast update management unit that generates module update information including information about the time, and
A data broadcast file storage unit for outputting the content file corresponding to the module update time to the data broadcast server based on the module update information;
A data broadcast storage device comprising:
A video content providing system comprising: Including a video server for receiving reproduction control of video content of the program with data broadcast from a user;
The data broadcast storage device
An update time storage unit that stores the module update information and outputs a file update request including the update file number to the data broadcast file storage unit according to a video playback time output from the video server. Prepared,
10. The video content providing system according to claim 9, wherein the data broadcast file storage unit outputs the content file corresponding to the update file number to the data broadcast server based on the file update request.

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