JP2012244430A - Receiver and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable high speed initiation of an application in a receiver in a cooperative system of broadcast with communication.SOLUTION: AIT analysis means 51 acquires and analyzes AIT from AIT memory means 23. On the basis of the analysis result of the AIT analysis means 51, priority determination means 52 determines whether or not execution priority is high. If the execution priority is high, the result concerned and the analysis result of the AIT analysis means 51 are notified to preinstall application initiation execution means 54. The preinstall application initiation execution means 54 initiates and executes a high priority application 61 preinstalled in application storage means 24.

Description

  The present invention relates to a receiver and a program having a function of coordinating broadcasting and communication.

  In recent years, with the progress of digitalization of broadcasting and broadbandization of communication, research and development for realizing a broadcasting / communication cooperation service has been performed.

  In this broadcasting / communication cooperation service, it is assumed that a plurality of contents are distributed using different transmission paths of broadcasting and communication, and the plurality of distributed contents are integrated and presented in a receiver such as a digital television. Is done.

  By the way, at present, in data broadcasting, various languages used for the broadcasting service called BML (Broadcast Markup Language) developed for multimedia encoding based on XML (extensible Markup Language) are used. Content is provided (see Patent Document 1).

  Further, according to Non-Patent Document 1, in realizing an execution environment of an application program (hereinafter referred to as an application) in digital broadcasting, an application in which all information related to the application and startup information requested by the application are stored. An information table (Application Information Table: AIT) is used.

JP 2003-60931 A

"Application Execution Environment for Digital Broadcasting Standard ARIB STD-B23 Version 1.2" Part II 10.16, July 29, 2009, Japan Radio Industry Association

  By the way, in data broadcasting, since it is necessary to multiplex all information on a broadcast wave, there is a certain limitation on the data capacity that can be transmitted on the broadcast wave.

  Under such circumstances, there is a demand for the realization of a system that links communication with unlimited transmission data capacity with broadcasting.

  In particular, it is assumed that an application executed by a receiver in such a system is started after being downloaded from a server via a communication transmission path. However, there is a possibility that an application whose time until activation is severely restricted, such as an application that presents an earthquake early warning, may not be activated within the restricted time depending on a communication state or a server state. Thus, there is a demand for high-speed application startup.

  The present invention has been made in view of such a situation, and an object of the present invention is to enable high-speed activation of an application in a receiver in a system that links broadcasting and communication.

  A receiver according to the present invention is a receiver that is connected to a server via a network and receives a broadcast signal that is broadcast from a broadcast station and is configured by multiplexing a plurality of pieces of information together with program content. Storage means for storing the pre-installed first application; and analysis means for analyzing the contents of the application management information when the application management information is multiplexed in the broadcast signal; In addition, when the application management information includes the activation information of the first application, the application management information includes activation control means for executing control to activate the first application.

  According to such a configuration, since the first application is preinstalled in the receiver, the receiver can start the first application at a higher speed than in the case of starting the application existing on the server. Can do.

  In the receiver, the application management information includes an execution priority, the analysis unit acquires the execution priority from the application management information, and the activation control unit includes the first application. May be activated to control execution according to the execution priority acquired by the analyzing means.

  According to such a configuration, since the activated first application is executed according to the execution priority, even if the execution time is restricted for the first application, the restricted time The execution can be started appropriately.

  In the receiver, the storage unit further stores a second application associated with the first application, and the activation control unit satisfies a predetermined condition after activation of the first application. In this case, control for starting the second application may be executed.

  According to such a configuration, when a predetermined condition is satisfied after the first application is started, the second application is started. Therefore, various processes and various services can be realized by combining the first application and the second application. Can increase the sex.

  A program according to the present invention is connected to a server via a network, and has a function of receiving a broadcast signal that is broadcast from a broadcast station and is configured by multiplexing a plurality of pieces of information together with program content. When application management information is multiplexed on the broadcast signal in a computer that controls a receiver having storage means for storing an installed application, analysis means for analyzing the contents of the application management information, the analysis means When the application management information analyzed by the above includes the activation information of the application, the application management information is made to function as an activation control unit that executes control to activate the application.

  According to such a configuration, since the application is preinstalled in the receiver, the computer controls the activation of the application in the receiver at a higher speed than the activation of the application existing in the server. Can do.

  ADVANTAGE OF THE INVENTION According to this invention, the high speed | rate start of the application in a receiver is realizable in the system which aims at cooperation with broadcasting.

1 is an overall configuration diagram of a broadcasting / communication cooperation system. It is a figure which shows the stack | stuck of the transmission protocol of the broadcast signal which concerns on digital broadcasting. It is a block diagram which shows the function structure of a receiver. It is a figure which shows an example of the structure of AIT described in the XML format. It is a functional block diagram which shows the functional structure of the application execution control means of the receiver of FIG. It is a flowchart explaining the flow of the application starting execution process by the application execution control means of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of a broadcasting / communication cooperation system 100 according to an embodiment of the present invention. The broadcasting / communication cooperation system 100 includes a broadcasting station 1, a broadcasting antenna 2, a service server 3, and a receiver 4. In the broadcasting / communication cooperation system 100, a receiver 4 uses a broadcasting service provided from a broadcasting station 1 by an ISDB (Integrated Services Digital Broadcasting) system and a communication network N configured by the Internet or the like. A communication service provided from the service server 3 is linked. Thereby, the broadcasting / communication cooperation service is provided to the user of the receiver 4.

The broadcasting station 1 includes a general digital broadcasting broadcasting facility (not shown) configured to include a program organization facility, a program transmission facility, and a transmission facility.
The broadcasting station 1 produces contents, event information (Event Information Table: EIT), AIT (hereinafter also referred to as application management information as appropriate), and the like, using broadcasting equipment. Then, the broadcast station 1 generates a broadcast signal in which these contents, event information, AIT, and the like are multiplexed by a broadcast facility, modulates the broadcast signal into a broadcast wave, and transmits the broadcast signal from the broadcast antenna 2.

  Content included in such broadcast waves is generated asynchronously with program content in addition to content including video and audio data constituting a program broadcast according to a broadcast schedule (hereinafter referred to as program content). There is content (hereinafter referred to as emergency content) including content, for example, earthquake early warning.

The event information includes meta information about the content such as the name of the program content, the broadcast date and time of the program content, and the description of the program content. Hereinafter, the event information in the table format is referred to as EIT.
The AIT (application management information) is information for managing one or more applications that can be executed by the receiver 4. The AIT includes individual management information corresponding to each of the one or more applications and managing each of the one or more applications. The individual management information includes an application ID for identifying the application to be managed, life cycle control information for controlling the life cycle of the application, location information indicating the location of the application (see FIG. 4 described later), and the like. .

  The content presented by the application at the receiver 4 includes content linked to the program content and content not linked to the program content. Hereinafter, content provided by an application is referred to as application content.

  The broadcast signal is the same as the broadcast signal of the conventional digital broadcast, and is defined by ARIB (registered trademark) (Association of Radio Industries and Broadcast) standard.

  FIG. 2 is a diagram illustrating a stack of broadcast signal transmission protocols related to digital broadcasting. As shown in FIG. 2, various types of data such as video and audio provided by digital broadcasting are stored in TS packets (transport stream packets) defined by the international standard MPEG-2 Systems and multiplexed in a time division manner. Is transmitted.

  In the TS packet, as shown in FIG. 2, PSI (Program Specific Information) / SI (Service Information) is defined for a section (Section). PSI / SI includes information indicating the type of data stored in the TS packet and information indicating the type of content. The above-mentioned EIT is included in SI.

  Data transmission using TS packets is classified into a method of transmitting data using sections and a method of transmitting data using PES (Packetized Elementary Stream) packets (data stream transmission method).

  Methods for transmitting data using sections include a data carousel transmission method and an event message transmission method.

  The data carousel transmission system is a transmission system that repeatedly transmits one or more data at a constant period. Each piece of data (module) transmitted by the data carousel transmission method is attached with identification information for uniquely identifying them. The data carousel transmission method is used for causing the receiver 4 to acquire individual data at an arbitrary timing.

  The event message transmission method is a method for sending a trigger signal from the broadcast station 1 to the receiver 4. The event message transmission method is used when a message with a small amount of data is transmitted from the broadcasting station 1 to the receiver 4.

  The data stream transmission method is a transmission method in which data to be transmitted is accommodated in a PES packet and transmitted as a stream. The data stream transmission method is used for transmitting real-time data such as video, audio, and caption data, and data that needs to be synchronized with other streams.

Here, AIT can be transmitted by various methods using TS packets.
That is, the AIT can be transmitted by describing the EIT included in the SI using the section.

The AIT can be described by binary representation or text representation by XML (Extensible Markup Language) and transmitted by a data carousel transmission system using sections. When the AIT is transmitted by the data carousel transmission method, identification information is attached to the module so that the receiver 4 can recognize the AIT.
In this embodiment, the AIT transmission method is defined in advance in at least one of the above transmission methods.

  BML developed for multimedia coding based on XML is based on xHTML defined by W3C (Registered Trademark) (World Wide Web Consortium), and Java Script (Registered Trademark) is used as a procedural language. This is a standard defined in consideration of consistency with international standards using ECMAScript based on it.

  Although not shown, the service server 3 includes a content distribution server that distributes broadcasted program content and application content, and an application distribution server that distributes various applications that operate on the receiver 4.

The service server 3 is communicably connected to the equipment of the broadcast station 1 and receives program content and metadata of the program content from the broadcast station 1.
The service server 3 transmits the program content to the receiver 4 in response to receiving the program content acquisition request from the receiver 4.

  Further, the service server 3 transmits the application to the receiver 4 in response to receiving the application acquisition request from the receiver 4. Furthermore, the service server 3 transmits application content including data such as video and audio to the receiver 4 when an application is executed in the receiver 4.

  Further, the service server 3 multiplexes the AIT with the program content as necessary, and transmits the multiplexed AIT to the receiver 4.

The receiver 4 performs predetermined processing on the program content received from the broadcast station 1 or through communication with the service server 3 to output the video and audio constituting the program content synchronously. . Further, the receiver 4 appropriately acquires an application based on the AIT, and activates and executes the acquired application. Further, for example, the receiver 4 can acquire application content from the service server 3 by an application being executed, and output the content in cooperation with the program content. Note that the output of application content does not necessarily have to be linked to program content.
Hereinafter, the function of the receiver 4 will be described in detail.

FIG. 3 is a block diagram illustrating a functional configuration of the receiver 4.
The receiver 4 includes a broadcast wave receiving unit 11, a first separating unit 12, a broadcast AIT obtaining unit 13, a communication unit 14, a second separating unit 15, a communication AIT obtaining unit 16, and an application execution control unit 17. Voice control means 18, display control means 19, voice output means 20, display means 21, holding means 22, AIT storage means 23, and application storage means 24.

  The broadcast wave receiving means 11 receives a broadcast wave transmitted from the broadcast station 1 via the broadcast antenna 2.

  The first separating unit 12 extracts a broadcast signal, that is, a TS packet, by demodulating the broadcast wave received by the broadcast wave receiving unit 11. Then, the first separation means 12 refers to the PSI / SI of the TS packet, determines the type of data included in the TS packet, and separates and extracts various data such as video, audio, and EIT. Further, the first separation means 12 separates and extracts the AIT by referring to the section and the PES according to a predetermined AIT transmission method.

  Subsequently, when the data included in the PES of the TS packet is audio data, the first separation unit 12 outputs the audio data to the audio control unit 18. Further, when the data included in the PES of the TS packet is video data, the first separation unit 12 outputs the video data to the display control unit 19.

  The first separation unit 12 stores the extracted EIT and other various data in the holding unit 22. Here, among various data, there may be data such as an earthquake early warning included in the emergency content. Further, when the first separation unit 12 extracts the AIT, the first separation unit 12 outputs the extracted AIT to the broadcast AIT acquisition unit 13.

  The broadcast AIT acquisition unit 13 acquires the AIT output from the first separation unit 12 and stores it in the AIT storage unit 23.

  The communication means 14 transmits / receives various information to / from the service server 3 via the communication network N and receives an operation signal from a remote controller R (hereinafter abbreviated as a remote controller R).

  The second separation unit 15 determines the type of data transmitted from the service server 3 via the communication network N and received by the communication unit 14, and separates the data output destination based on the determination result. For example, when it is determined that the received data is AIT, the second separation unit 15 outputs this AIT to the communication AIT acquisition unit 16. When the second separation unit 15 determines that the received data is an application, the second separation unit 15 outputs the application to the application execution control unit 17.

  Further, when it is determined that the received data is a TS packet, the second separation unit 15 separates and extracts various data such as video, audio, and AIT from the TS packet. When the second separating unit 15 extracts the AIT, the second separating unit 15 outputs the AIT to the communication AIT acquiring unit 16 and extracts data other than the AIT (video and audio data constituting the application content). The data is output to the application execution control means 17.

  The communication AIT acquisition unit 16 acquires the AIT output from the second separation unit 15 and stores it in the AIT storage unit 23.

The application execution control unit 17 acquires an application based on the AIT, and controls activation and execution of the acquired application.
In this embodiment, it is assumed that there are two types of application acquisition destinations: the external service server 3 and the internal application storage unit 24. When the application content is acquired from the service server 3 by executing the application, the application execution control unit 17 separates the audio and video data from the application content and sends the audio data to the audio control unit 18. The video data is output to the display control means 19, respectively.

Here, an example of the structure of an AIT for managing applications whose execution is controlled by the application execution control means 17 will be described in detail.
FIG. 4 is a diagram showing an example of the structure of the AIT described in the XML format.
As described above, the AIT includes individual management information corresponding to each of one or more applications and managing each of the one or more applications.
Specifically, the codes described from the <mhp: Application> tag to the </ mhp: Application> tag shown in FIG. 4 correspond to individual management information for managing one application. In the AIT, a plurality of pieces of individual management information can be described by newly describing individual management information of other applications after the </ mhp: Application> tag.

Of the codes corresponding to the individual management information, for example, the code corresponding to the <mhp: appId> tag indicates the application ID (identification information). The code corresponding to the <mhp: controlCode mhp: type = “ARIB-J”> tag indicates the life cycle control information of this application, and “AUTOSTART” shown in FIG. This is life cycle control information to be automatically executed. A code corresponding to the <mhp: location> tag indicates location information indicating the location of the application. In the example of FIG. 4, the address of the service server 3 is described in the location information as the location of the application.
In the location information, the receiver 4 can be designated as the location of the application. In this case, in this embodiment, the application execution control unit 17 recognizes the application storage unit 24 described later as the location of the application, and acquires the application from the application storage unit 24.

  The application execution control unit 17 monitors the AIT storage unit 23 and refers to the control information related to the life cycle described in the AIT when a new AIT is stored. Then, when the control information related to the life cycle indicates “automatic execution”, the application execution control unit 17 recognizes the location information described in the AIT as an application acquisition destination. For example, when the acquisition destination is the service server 3, the application execution control unit 17 acquires the application from the service server 3 via the communication unit 14 and the second separation unit 15, and starts and executes the acquired application. To do. In this case, the application is automatically executed without receiving an explicit operation instruction from the user of the receiver 4.

  Further, the application execution control means 17 receives an application execution instruction from the user of the receiver 4 via the remote controller R. For example, the remote control R is provided with a Hybridcast (registered trademark) button, and the application execution control means 17 accepts selection of an application to be executed in response to the user pressing the Hybridcast button by the user of the receiver 4. An instruction to execute a menu screen is received. The application execution control means 17 refers to the AIT storage means 23 in response to receiving the menu screen execution instruction, and identifies the AIT of the executable application. Then, the application execution control unit 17 generates image data of a menu capable of selecting an application corresponding to the specified AIT, and outputs the image data to the display control unit 19, whereby the menu is displayed on the display unit 21. Display. When an application selection operation is received from the user of the receiver 4 via the remote controller R, the application execution control unit 17 refers to the location information of the application described in the AIT, acquires the application, and starts the application. And execute.

  The application execution control means 17 acquires application content related to the application being executed from the service server 3 as necessary. Then, the application execution control unit 17 outputs the audio data of the application content to the audio control unit 18 and the video data to the display control unit 19. If the application being executed is an application that presents application content linked to program content, the video data and audio data of the application content are output in conjunction with the video data and audio data of the program content. Is done.

  In addition, the application execution control unit 17 determines the life of the application being executed based on the AIT stored in the AIT storage unit 23, specifically based on the life cycle control information included in the individual management information in the AIT. Control the cycle. For example, the application execution control unit 17 terminates the application when the life cycle control information of the application indicates “end”.

  The audio control unit 18 outputs the audio data output from the first separation unit 12 to the audio output unit 20 in synchronization with the video data whose display is controlled by the display control unit 19. When the audio data output from the application execution control unit 17 can be synchronized with the video data whose display is controlled by the display control unit 19, the audio control unit 18 synchronizes with the video data. Audio data is output to the audio output means 20.

  The display control unit 19 displays the video corresponding to the data output from the first separation unit 12 on the display unit 21 in synchronization with the audio data output controlled by the audio control unit 18. Further, when the video data output from the application execution control unit 17 can be synchronized with the audio data output-controlled by the audio control unit 18, the display control unit 19 synchronizes with the audio data. The video is displayed on the display means 21.

  The audio output unit 20 is configured by a speaker or the like, and outputs audio corresponding to the data based on the data output from the audio control unit 18. The display unit 21 includes a display or the like, and displays a video corresponding to the data based on the data output from the display control unit 19.

The holding unit 22 stores various other information such as meta information of program content such as EIT and emergency earthquake warnings included in emergency content.
The AIT storage unit 23 stores various AITs acquired by the broadcast AIT acquisition unit 13 or the communication AIT acquisition unit 16.
The application storage unit 24 mainly stores preinstalled applications.

Of the receivers 4 having such a functional configuration, the application execution control means 17 can execute an application activation execution process.
The application activation execution process refers to a series of processes from acquiring an application based on the AIT to starting and executing the application.

Here, the acquisition destination of the application is generally the service server 3. In other words, from the viewpoint of the application execution control unit 17, the application acquisition source in the receiver 4 is the communication unit 14 that communicates with the service server 3 via the network N. That is, a general application is received (downloaded) from the service server 3 via the network N and activated.
However, there is an application that is subject to application activation execution processing in which the time until activation is severely restricted. For example, when emergency content is received by the receiver 4, the receiver 4 needs to immediately present the emergency earthquake bulletin included in the emergency content to the viewer. For this reason, an application that presents an earthquake early warning is severely restricted in time until activation.
If such an application with a restriction on the activation time exists outside the receiver 4 such as the service server 3, downloading to the receiver 4 from the outside is required. As a result, depending on the communication status of the communication means 14 and the state of the service server 3, the application may not be activated within the restricted time.
Therefore, in the present embodiment, such an application with restrictions on activation time, that is, an application that requires high-speed activation, is preinstalled (for example, preinstalled at the time of factory shipment) in the application storage unit 24 of the receiver 4. ing. The application is acquired from the application storage unit 24 and activated by the AIT multiplexed on the broadcast wave.

In addition, such applications with restrictions on activation time are often severely restricted in terms of execution time (time from the start of execution to the end of execution) of various processes such as emergency earthquake bulletin presentation processing. An application with a restriction on the execution time may not be terminated within the restriction time if an interruption of processing of another application occurs.
Therefore, in the present embodiment, a privilege that can occupy a processing rate of the CPU or the like of the receiver 4 for a certain level is given to an application in which the activation time is restricted. In this embodiment, the control of whether or not to start such a privileged application and how much the occupation rate of the processing rate of the CPU or the like is set based on the execution priority in the present embodiment. Done.
The execution priority of an application is not a relative priority with respect to another application, but a priority that is an index of the occupation rate of a processing rate such as a CPU. In the present embodiment, such execution priority is assumed to be described in the AIT (not shown in FIG. 4). When the execution priority described in the AIT is equal to or higher than a certain level, the above-described privileged application is activated, and execution according to the execution priority, for example, a processing rate of the CPU or the like ensures a certain occupation rate The execution is done. Therefore, such a privileged application is hereinafter referred to as a high priority application. For example, the above-described application for presenting emergency earthquake information is an example of a high priority application. In the example of FIG. 5, the high priority application 61 is preinstalled in the application storage unit 24.

In summary, there are two types of application acquisition destinations in the application activation execution process of the present embodiment: the service server 3 outside the receiver 4 and the application storage means 24 inside the receiver 4. The latter application storage means 24 stores a high priority application 61.
That is, the high priority application 61 is often pre-installed in the application storage unit 24 so that it can be started at a high speed because the activation time is often limited. Furthermore, since the high priority application 61 is often restricted in execution time, it is executed when the execution priority described in the AIT is equal to or higher than a certain value so that the execution ends within the restriction time. Execution according to priority, for example, execution in a state in which the processing rate of the CPU or the like ensures a certain occupation rate.

In the application activation execution process of the present embodiment, the associated application 62 is activated when a predetermined condition such as a predetermined time elapses after the high priority application 61 is activated.
The association application 62 refers to an application associated with the high priority application 61 so that the self application is activated due to the activation of the high priority application 61. In other words, the associated application 62 is not a privileged application that requires a certain rate or more of the processing rate of the CPU or the like, that is, it is not a high priority application, so it is not immediately activated by the AIT. This is activated when a predetermined condition is satisfied after the high priority application 61 is executed.
For example, when the high-priority application 61 has an emergency earthquake bulletin presentation function, when the emergency content is stored in the storage unit 22, the information on the epicenter included in the emergency content is used as a parameter and the epicenter An application having a function of acquiring and presenting the live video via communication can be employed as the associated application 62. In addition, for example, when the emergency content is held in the holding unit 22 or the like, a live video desired by the viewer (for example, a video of the nearest station of the current position) or traffic information (for example, traffic jam information near the current position or railway operation) An application having a function of acquiring and presenting (information) via communication can be employed as the associated application 62.
As described above, when a predetermined condition is satisfied after the high-priority application 61 is activated, the associated application 62 is activated. Therefore, various processes and various services are performed depending on the combination of the high-priority application 61 and the associated application 62. The possibility of realization can be increased.
However, the associating application 62 is sufficient if the activation timing is associated with the high priority application 61, and it is not particularly necessary to have the functions and contents related to the high priority application 61.

FIG. 5 is a functional block diagram showing a functional configuration of the application execution control means 17 for realizing such an execution function of the application activation execution process.
The application execution control unit 17 includes an AIT analysis unit 51, a priority determination unit 52, a server application activation execution unit 53, and a preinstalled application activation execution unit 54.

  The AIT analysis unit 51 monitors the AIT storage unit 23, and when a new AIT is stored, analyzes the description content of the AIT and supplies the analysis result to the priority determination unit 52.

The priority determination unit 52 determines whether the execution priority of the application is high or low based on the analysis result notified from the AIT analysis unit 51.
When the priority determination unit 52 determines that the execution priority of the application is low, the priority determination unit 52 notifies the server application activation execution unit 53 of this together with the analysis result of the AIT analysis unit 51.
On the other hand, when the priority determination unit 52 determines that the execution priority of the application is high, it notifies at least the preinstalled application activation execution unit 54 together with the analysis result of the AIT analysis unit 51.

When the priority determination unit 52 is notified that the application execution priority is low, the server application activation execution unit 53 acquires the application from the service server 3 based on the analysis result of the AIT analysis unit 51, and Start and run the application.
Specifically, the server application activation execution unit 53 transmits an application acquisition request to the service server 3 via the communication unit 14 based on the analysis result of the AIT analysis unit 51, for example, the activation information of the application. Note that the application activation information includes, for example, location information indicating the service server 3 as an acquisition destination.
The server application activation execution unit 53 acquires the application supplied from the service server 3 through the communication unit 14 and the second separation unit 15 and activates the application based on the analysis result of the AIT analysis unit 51. And run.

When the pre-installed application activation execution unit 54 is notified from the priority determination unit 52 that the execution priority of the application is high, the high-priority application is based on the analysis result of the AIT analysis unit 51, for example, the activation information of the application. 61 is started from the application storage means 24 and executed. The activation information of the high priority application 61 includes, for example, location information indicating the inside of the receiver 4 as an acquisition destination, immediate activation and execution instruction information, and the like.
Further, the preinstalled application activation execution unit 54 activates and executes the associated application 62 from the application storage unit 24 when a predetermined condition such as a predetermined time has elapsed.

Next, the flow of application activation execution processing of the receiver 4 in this embodiment will be described.
FIG. 6 is a flowchart for explaining the flow of the application activation execution process.
The application activation execution process starts when a new AIT multiplexed in the broadcast wave (hereinafter referred to as “broadcast AIT” in particular) is stored in the AIT storage means 23.

  In step S1, the AIT analysis means 51 acquires the broadcast AIT from the AIT storage means 23 and analyzes it. When the analysis result of the AIT analysis unit 51 is notified to the priority determination unit 52, the process proceeds to step S2.

  In step S2, the priority determination means 52 determines whether or not the execution priority is high.

If the execution priority is low, it is determined as NO in step S2, the fact and the analysis result of the AIT analysis means 51 are notified to the server application activation execution means 53, and the process proceeds to step S3.
In step S <b> 3, the server application activation execution unit 53 acquires an application from the service server 3. In step S4, the server application activation execution unit 53 activates and executes the application. Thereby, the application activation execution process ends.

On the other hand, when the execution priority is high, it is determined to be YES in step S2, and the fact and the analysis result of the AIT analyzing unit 51 are notified to the preinstalled application activation executing unit 54, and the processing is performed. Advances to step S5.
In step S <b> 5, the preinstalled application activation execution unit 54 activates and executes the high priority application 61 preinstalled in the application storage unit 24.

In step S6, the preinstalled application activation executing unit 54 determines whether or not a predetermined condition is satisfied.
If the predetermined condition is not satisfied, it is determined as NO in step S6, and the process returns to step S6 again. That is, until the predetermined condition is satisfied, the determination process in step S6 is repeated, and the application activation execution process enters a standby state. However, the high-priority application 61 that has already been started continues to be executed until the processing ends as scheduled.
Thereafter, when the predetermined condition is satisfied, it is determined as YES in Step S6, and the process proceeds to Step S7.
In step S7, the preinstalled application activation executing unit 54 activates and executes the associated application 62 preinstalled in the application storage unit 24.
Thereby, the application activation execution process ends.

According to this embodiment, there are the following effects.
(1) Since the high priority application 61 is preinstalled in the receiver 4, the receiver 4 compares the activation of the high priority application 61 with the activation of the application existing in the service server 3. It can be done at high speed.

  (2) Since the high priority application 61 is executed according to the execution priority, even if the execution time is restricted with respect to the high priority application 61, it is appropriate within the restricted time. Can start running.

  (3) Since the corresponding application 62 is started when a predetermined condition is satisfied after the high priority application 61 is started, various processes and various services can be performed by combining the high priority application 61 and the corresponding application 62. The possibility of realization can be increased.

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

  For example, for the high priority application 61 that is activated when the execution priority is high, the contents to be executed according to the execution priority described in the AIT may be determined in advance. For example, when the execution priority is the first value, an image generated by the high priority application 61 is displayed in picture-in-picture without reducing the main screen, and the execution priority is the second value. In this case, it may be determined in advance that the main screen is reduced and an image generated by the high priority application 61 is displayed in the blank display area obtained as a result.

  Further, for example, when the execution priority described in the API is high, the receiver 4 selects only the application with the signature specified by the API among the applications preinstalled in the application storage unit 24. You may make it start as the application 61. FIG. Accordingly, it is possible to prevent the occurrence of unnecessary startup of applications such as startup with no particular restrictions on startup time or execution time even if the execution priority is high.

DESCRIPTION OF SYMBOLS 1 Broadcasting station 2 Broadcasting antenna 3 Service server 4 Receiver 14 Communication means 15 2nd isolation | separation means 17 Application execution control means 22 Holding means 24 Application storage means 51 AIT analysis means 52 Priority determination means 53 Server application starting execution means 54 Pre Installed application activation execution means 61 High priority application 62 Application with correspondence

Claims (4)

A receiver that receives a broadcast signal that is connected to a server via a network and that is broadcast from a broadcast station and that is configured by multiplexing a plurality of pieces of information together with program content.
Storage means for storing the pre-installed first application;
When application management information is multiplexed on the broadcast signal, analysis means for analyzing the content of the application management information;
If the application management information analyzed by the analysis means includes start information of the first application, start control means for executing control for starting the first application;
Receiver with. The application management information includes an execution priority,
The analysis means acquires the execution priority from the application management information,
The activation control unit activates the first application and controls execution according to the execution priority acquired by the analysis unit.
The receiver according to claim 1. The storage means further stores a second application associated with the first application,
The activation control means executes control to activate the second application when a predetermined condition is satisfied after activation of the first application.
The receiver according to claim 1 or 2. Connected to a server via a network and has a function of receiving a broadcast signal that is broadcast from a broadcasting station and is configured by multiplexing a plurality of information together with program content, and stores preinstalled applications A computer for controlling a receiver having storage means for
When application management information is multiplexed on the broadcast signal, an analysis means for analyzing the content of the application management information,
When the application management information analyzed by the analyzing means includes the activation information of the application, activation control means for executing control for starting the application,
Program to function as.

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