JP2017085196A - Reception device, broadcast system, reception method, and reception program - Google Patents

Abstract

An apparatus, a system, a method, and a program capable of downloading update data from both an MMT (MPEG Media Transport) system and a TS (Transport Stream) system in-receiver information update service are provided. A control unit 331 of a receiving apparatus detects notification information for detecting network identification information indicating a data providing source network and information necessary for downloading data from notification information for data provision transmitted by the MMT method. Only when it is determined that the detection unit 334 and the determination unit 335 determine whether the network identification information detected by the notification information detection unit 334 matches the predetermined network identification information, and the determination unit 335. A data acquisition unit 337 that reads information necessary for downloading data described in accordance with the MMT method as TS method information and downloads the data from the data providing source network; [Selection] Figure 11

Description

  The present invention relates to a receiving device, a broadcasting system, a receiving method, and a receiving program.

  In a receiving apparatus such as MMT (Movement Picture Experts Group) media transmission software of MMT, which is a media transmission standard of 4K / 8K ultra high definition television broadcasting (4K / 8K UHDTV: Ultra High Definition Television). The receiver information update service to be updated is defined in the specification shown in Non-Patent Document 1.

In this specification, even in a receiving apparatus that receives a broadcast by the MMT system, a BS digital system to which an MPEG-2 System broadcasting system, that is, a TS (Transport Stream) system, is applied in an in-receiver information update service. It is stipulated that an in-receiver information update service such as broadcasting may be used. When using the in-receiver information update service of the TS method, a part of the notification information notified by the MMT method is replaced as information used in the in-receiver information update service in the TS method, and update data is provided. It is necessary to switch to the transmission channel to obtain update data.
On the other hand, in the in-receiver information update service, it is assumed that the existing in-receiver information update service such as BS digital broadcasting is used and the service in the advanced broadband satellite digital broadcasting is not performed for the time being.

Radio Industry Association, "Receiver for Advanced Broadband Satellite Digital Broadcasting, Standard (Preferred Specifications), ARIB STD-B63 1.3 Edition", September 30, 2015

  However, assuming that only the in-receiver information update service of the TS method is used, if the above replacement is performed on all of the received notification information, if the in-receiver information update service is provided in the future by the MMT method, In the receiving apparatus, there is a possibility that a problem that the in-receiver information update service cannot be received by the MMT method may occur.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a receiving apparatus and a broadcast that can download update data from both the MMT and TS receiver information update services. A system, a reception method, and a reception program are provided.

  In order to solve the above problem, one aspect of the present invention is notification information transmitted by the first transmission method, which is a network that indicates a network that provides the data from the notification information that notifies the provision of data. A notification information detection unit for detecting identification information and information necessary for downloading the data; and whether the network identification information detected by the notification information detection unit matches predetermined network identification information. The information necessary for downloading the data described according to the first transmission method is different from the first transmission method only when it is determined that the determination unit and the determination unit match. A data acquisition unit that reads the data as the second transmission method information and downloads the data from the network of the provider. It is the location.

  One embodiment of the present invention includes a first transmission device that performs transmission using a first transmission method, a second transmission device that performs transmission using a second transmission method different from the first transmission method, A broadcast system including a reception device, wherein the reception device notifies network identification information indicating a network that provides the data, information necessary for downloading the data, from notification information that notifies the provision of data; When the notification information is transmitted by the first transmission method, the network identification information detected by the notification information detection unit is a network identification corresponding to the second transmission device. Only when it is determined that the determination unit and the determination unit match whether or not it matches the information, the download of the data described according to the first transmission method is performed. The the main information, a broadcasting system and a data acquisition unit for downloading the data from the second transmission device replaced as information of the second transmission scheme.

  Further, according to one embodiment of the present invention, the reception apparatus is notification information transmitted by the first transmission method, and network identification information indicating the network that provides the data from the notification information that notifies the provision of data And a first step of detecting information necessary for downloading the data, and a second step of determining whether or not the detected network identification information matches the predetermined network identification information. The information necessary for downloading the data described according to the notification information transmission method only when the step and the receiving device determine that they match in the second step, the first transmission method The data is read as information of the second transmission method different from the above and the data is downloaded from the network of the provider 3 and step to a receiving method comprising.

  Further, according to one aspect of the present invention, there is provided notification information transmitted to the computer by the first transmission method, the network identification information indicating the data providing network from the notification information for notifying the provision of data. In a first step of detecting information necessary for downloading the data, a second step of determining whether the detected network identification information matches predetermined network identification information, or the second step If it is determined that they match, the information required for downloading the data described according to the transmission method of the notification information is read as information of a second transmission method different from the first transmission method, and the provider Receiving program for executing the third step of downloading the data from the network It is.

  According to the present invention, it is possible to download update data from both the MMT system and TS system in-receiver information update services.

1 is a block diagram illustrating a broadcasting system according to an embodiment of the present invention. It is a block diagram which shows the transmitter of the MMT system by the same embodiment. It is a figure which shows the data structure of MH-SDTT which is the notification information of the MMT system of the embodiment. It is a figure which shows the data structure of the MPU download content descriptor contained in the notification information of the MMT system of the embodiment. It is a figure which shows the data structure of the compatibility descriptor applied to the embodiment. It is a block diagram which shows the transmission apparatus of TS system by the same embodiment. It is a figure which shows the data structure of SDTT which is the notification information of TS system of the embodiment. It is a figure which shows the data structure of the download content descriptor contained in the notification information of TS system of the embodiment. It is a block diagram which shows the server apparatus by the embodiment. It is a block diagram which shows the receiver by the same embodiment. It is a block diagram which shows the control part of the receiver by the same embodiment. It is a figure which shows the structure of the data memorize | stored in the memory | storage part with which the control part of the receiver by the embodiment is provided. It is a flowchart which shows the process of the control part of the receiver by the same embodiment.

(Broadcast system configuration)
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a broadcasting system 1 according to the present embodiment. The broadcast system 1 includes transmission devices 11a and 11b, a broadcast satellite 13, a server device 21, a communication transmission path 22, and a reception device 31. The transmission devices 11a and 11b and the server device 21 are broadcast facilities managed by the same or different broadcasters. The receiving device 31 is a television receiver, for example, and receives broadcast waves broadcast from the transmitting devices 11a and 11b.

  The broadcast transmission path 12 is constituted by a broadcast satellite 13 and simultaneously transmits a broadcast wave including various data transmitted by the transmission devices 11a and 11b to an unspecified number of reception devices 31 in one direction. Note that a part of the broadcast transmission path 12 may include a communication line, for example, a communication line from the transmission devices 11a and 11b to a transmission facility for transmitting radio waves. In the following description, transmitting (or receiving) various data via the broadcast transmission path 12 may be referred to as “transmitting (or receiving or downloading) by broadcasting”.

  The transmission devices 11a and 11b transmit various data relating to broadcasting to the reception device 31 via the broadcast transmission path 12 as broadcast waves. For example, the transmission device 11a performs broadcasting in the MMT system defined by ARIB STD-B60 1.3 version. The transmission device 11b is applied to, for example, terrestrial digital, broadband CS (Communication Satellite), BS (Broadcast Satellite) digital broadcasting, etc. defined by ARIB TR-B15 6.7 version or ARIB TR-B14 5.9 version Broadcast in the TS system.

  The transmission devices 11a and 11b transmit program data, notification information, control information, and the like, and further transmit distribution data including update software as an in-receiver information update service. Here, the software is a computer program that realizes part or all of the functions of the receiving device 31 by being executed mainly by the receiving device 31. The software is, for example, a bug that has been found in existing software of the same type, one that has changed operating parameters, or a new function added or a part of the existing function deleted. . The software may not be a complete computer program, and may be data such as a patch for updating a part of the computer program.

  The communication transmission path 22 is, for example, a wide-area communication network such as the Internet having a wired large-capacity backbone network, and is a transmission path for bidirectionally transmitting various data between the server apparatus 21 and the receiving apparatus 31. is there. The communication transmission path 22 may be a communication network including a wireless access network in part, for example, a public wireless communication network. Note that transmission of various types of data via the communication transmission path 22 may be referred to as “transmission (reception or download)”.

  The server device 21 stores the same distribution data as the transmission data transmitted by the transmission devices 11a and 11b. When the reception device 31 cannot receive the distribution data through the broadcast wave, the server device 21 receives the distribution data from the reception device 31. In response to the request, the distribution data is transmitted via the communication transmission path 22. Information for connecting to the server device 21 is notified to the receiving device 31 via the broadcast transmission path 12 in the form of URL (Uniform Resource Locator), for example, as part of the notification information.

  The reception device 31 is, for example, a television reception device or a video recording device, and by switching the transmission channel of the broadcast transmission path 12, the broadcast wave from the MMT transmission device 11a and the TS transmission device 11b are transmitted. Switch broadcast waves and receive.

(Configuration of MMT transmitter)
Next, the configuration of the MMT transmission device 11a will be described.
FIG. 2 is a block diagram illustrating a configuration of the transmission device 11a. The transmission device 11a includes a distribution data acquisition unit 111a, a program data acquisition unit 112a, a notification information acquisition unit 113a, a control information acquisition unit 114a, a multiplexing unit 115a, an encryption unit 116a, a modulation unit 117a, and an antenna 118a.

  For example, when a broadcaster wants to update software in the receiving device 31, the distribution data acquisition unit 111a reads and acquires software created by the broadcaster from the outside. Here, the outside is, for example, a recording medium such as a computer system of the broadcaster storing the software or an HDD (Hard Disk Drive) storing the software, and the distribution data acquisition unit 111a Using communication means or the like, connect to these to acquire software.

  Further, the distribution data acquisition unit 111a converts the acquired software into data in a predetermined format and generates distribution data. For example, the distribution data acquisition unit 111a divides the acquired software into sizes determined in the format of MPU (Media Processing Unit). The distribution data acquisition unit 111a assigns MPU sequence numbers to MPUs belonging to the same asset, here, each MPU including data constituting the software, and stores the divided data in the MPU in ascending order of the MPU sequence numbers. To generate distribution data.

  Also, the distribution data acquisition unit 111a generates MPU configuration information as a data asset management table (DAM: Data Asset Management Table). The DAM includes, for example, manufacturer identification (maker_id), model identification (model_id), version identification (version_id), and the like of the software. The distribution data becomes data including the generated DAM and MPU, and the distribution data acquisition unit 111a outputs the generated distribution data to the multiplexing unit 115a. In addition, “identification (id: identifier)” is information for identifying individual things, and may be referred to as “identifier”.

  For example, the program data acquisition unit 112a reads and acquires program data including video data and audio data reproduced by the receiving device 31 from the outside. Further, the program data acquisition unit 112a converts the acquired program data according to a format defined by the MMT method, and outputs the converted program data to the multiplexing unit 115a.

  The notification information acquisition unit 113a reads and acquires notification information regarding software download acquired by the distribution data acquisition unit 111a from the outside. Here, the notification information is information including manufacturer identification, model identification, version identification, and the like as information for specifying distributed software. The notification information includes information related to software distribution, that is, information such as start time, distribution continuation time, address of the server device 21 that is the distribution data provider, and priority of the route for receiving distribution data. The notification information is information represented by the configuration of a section format table MH-SDTT (Software Download Trigger Table), and the notification information acquisition unit 113a converts the acquired notification information into the MH-SDTT format. The data is output to the multiplexing unit 115a.

  The control information acquisition unit 114a reads and acquires control information to be referred to when the reception device 31 that has received data broadcast from the transmission device 11a receives and separates the data, and outputs the control information to the multiplexing unit 115a. Here, the control information is information including data processing, network information, and the like when the receiving device 31 receives program data, notification information, and distribution data, for example. As the network information, for example, there is information indicating physical conditions such as the frequency (frequency) and polarization (polarization) of the downstream broadcast wave transmitted through the broadcast transmission path 12. The control information is, for example, information represented by a configuration of a TLV (Type Length Value) network information table (TLV_Network_Information Table ()).

  The multiplexing unit 115a multiplexes the program data output from the program data acquisition unit 112a, the notification information output from the notification information acquisition unit 113a, and the control information output from the control information acquisition unit 114a to obtain the first multiplexed data. Generate. The multiplexing unit 115a outputs the generated first multiplexed data to the encryption unit 116a.

  The encryption unit 116a encrypts the first multiplexed data output from each of the multiplexing units 115a by using a predetermined encryption method such as AES (Advanced Encryption Standard), for example. Further, the encryption unit 116a outputs the encrypted first multiplexed data to the modulation unit 117a.

The modulation unit 117a upconverts the first multiplexed data output from the encryption unit 116a at a predetermined carrier frequency, and generates a transmission signal of the first uplink transmission channel. Modulation section 117a outputs the generated transmission signal to antenna 118a.
The antenna 118a transmits the transmission wave of the uplink transmission channel by the transmission signal output from the modulation unit 117a.

(Data structure of MMT notification information)
Next, the data structure of MH-SDTT will be described.
FIG. 3 is a diagram showing an example of MH-SDTT which is notification information defined in ARIB STD-B60 1.3 version. MH-SDTT includes table identification extension (table_id_extension), TLV (Type Length Value) stream identification (tlv_stream_id), original network identification (original_network_id), service identification (service_id), start time (dur), ti time (dur) And a table including items such as descriptor areas (descriptors ()).

  In the upper 8 bits of the table identification extension, manufacturer identification (maker_id) is described, and in the lower 8 bits, model identification (model_id) is described. In the TLV stream identification, for example, information of a label for specifying a stream provided with the software is described from the streams multiplexed and transmitted by the transmission device 11a serving as the software provider. The original network identification describes the identification information of the network that provides the TLV stream to which the software is provided. In the service identification, identification information of a service provided with software in the TLV stream is described.

  The start time describes the time at which the transmission apparatus 11 starts transmitting software. In the distribution continuation time, a time during which the transmission device 11 continues to transmit software is described. In one MH-SDTT, a plurality of start times (start_time) and distribution duration (duration) can be set. In the descriptor area (descriptors ()), an MPU download content descriptor, an MH-network download content descriptor, and the like are described.

(Data structure of MPU download content descriptor)
Next, the data structure of the MPU download content descriptor will be described.
FIG. 4 is a diagram showing an example of an MPU download content descriptor defined in ARIB STD-B60 version 1.3. The MPU download content descriptor includes a DAM timeout value (time_out_value_DAM), a compatibility flag (compatibility_flag), a compatibility descriptor (compatibilityDescriptor ()), an item information flag (item_info_flag), an item number (item_item_item_item_item_item_item_item_item_item_item_item_item_item_item_item_item_item_item ), Item size (item_size), item information length (item_info_length), item information byte (item_info_byte), private data area (private_data_byte), and the like.

  The compatibility flag is a flag indicating the presence / absence of a compatibility descriptor. The compatibility descriptor includes, for example, the content of the compatibility descriptor as shown in FIG. 5 defined in the ARIB STD-B21 5.5 version. In the compatibility descriptor, manufacturer identification, model identification, and version identification for specifying software are described. An item is one unit of data transmitted in an IP data flow, and means a unit of software data in this embodiment.

In the item information flag, a flag indicating the presence / absence of information for each item of the MPU download content descriptor is described. In the DAM timeout value, a timeout value to be recommended for reception of an asset, for example, a DAM table of software to be downloaded, is described in milliseconds. The number of items describes the number of items. Item identification describes item identification used in file transmission at the time of download. The item size describes the byte length of the item. In the item information length, the byte length of the item information byte is described. In the item information byte, necessary ones of the MH-type descriptor and the MH-Info descriptor described in the data asset management table are described.
The first byte of the private data area stores download priority (download_priority), that is, a value indicating which of broadcast and communication is given priority as a download path.

(Configuration of TS transmission device)
Next, the configuration of the TS transmission device 11b will be described.
FIG. 6 is a block diagram illustrating a configuration of the transmission device 11b. The transmission device 11b includes a distribution data acquisition unit 111b, a program data acquisition unit 112b, a notification information acquisition unit 113b, a multiplexing unit 115b, an encryption unit 116b, a modulation unit 117b, and an antenna 118b.

  The distribution data acquisition unit 111b acquires software by reading it from outside. The distribution data acquisition unit 111b converts the acquired software into a predetermined format and generates distribution data. For example, the distribution data acquisition unit 111b generates information in a DDB (Download Data Block) message format by sectioning the acquired software into a predetermined size. Further, the distribution data acquisition unit 111b generates configuration information of the DDB message according to a DII (Download Info Indication) message format. The DII message includes, for example, manufacturer identification, model identification, and version identification of the software. The distribution data is data including the generated DII message and the DDB message. The distribution data acquisition unit 111b outputs the generated distribution data to the multiplexing unit 115b.

  The program data acquisition unit 112b reads and acquires program data from the outside. Further, the program data acquisition unit 112b converts the acquired program data into a format determined by the TS method, for example, a stream format, and outputs the converted program data to the multiplexing unit 115b.

  The notification information acquisition unit 113b reads and acquires notification information regarding the software download acquired by the distribution data acquisition unit 111b from the outside. Here, the notification information is information including manufacturer identification, model identification, version identification, and the like as information for specifying distributed software. The notification information also includes information such as the start time, the distribution duration, the address of the server device 21 serving as the provider, and the priority of the route for receiving the distribution data. The notification information is represented by an SDTT (Software Download Trigger Table) which is a section format table, and the notification information acquisition unit 113b converts the acquired notification information into an SDTT format and outputs the converted information to the multiplexing unit 115b.

The control information acquisition unit 114b reads and acquires control information to be referred to from the outside, for example, when the reception device 31 that receives data broadcast from the transmission device 11b receives and separates the data, and outputs the control information to the multiplexing unit 115b.
The multiplexing unit 115b includes distribution data output from the distribution data acquisition unit 111b, program data output from the program data acquisition unit 112b, notification information output from the notification information acquisition unit 113b, and control information output from the control information acquisition unit 114b. Is multiplexed to generate multiplexed data in a predetermined format such as a transport stream. The multiplexing unit 115b outputs the generated multiplexed data to the encryption unit 116b.

  The encryption unit 116b encrypts the multiplexed data output from the multiplexing unit 115b using, for example, a predetermined encryption method such as MULTI2. Also, the encryption unit 116b outputs the encrypted multiplexed data to the modulation unit 117b. Modulation section 117b modulates a carrier wave having a predetermined carrier frequency with multiplexed data that is a baseband signal output from encryption section 116b, and outputs the result to antenna 118b. The antenna 118b transmits the transmission signal output from the modulation unit 117b to the receiving device 31 via the broadcast transmission path 12 using a radio wave in a channel band corresponding to the carrier frequency, that is, a broadcast wave transmission channel.

(Data structure of notification information of TS method)
Next, the data structure of SDTT will be described.
FIG. 7 is a diagram showing an example of SDTT that is notification information defined in the ARIB STD-B21 version 5.5. In the example shown in FIG. 7, the notification information SDTT includes table identification extension (table_id_ext), transport stream identification (transport_stream_id), original network identification (original_network_id), service identification (service_id), descriptor area (descriptors ()), and the like. It is a table containing the item of.

  Manufacturer identification is described in the upper 8 bits of the table identification extension, and model identification is described in the lower 8 bits. In the transport stream identification, for example, information on a label that identifies a stream provided with the software from among the streams that are multiplexed and transmitted by the transmission device 11b that is the software provider is described. In the original network identification, identification information of a network that provides a transport stream to which software is provided is described. In the service identification, identification information of a service for which software is provided in the transport stream is described. In the descriptor area, a download content descriptor, a network download content descriptor, and the like are described.

(Data structure of download content descriptor)
Next, the data structure of the download content descriptor will be described.
FIG. 8 is a diagram illustrating an example of a download content descriptor. The download content descriptor includes items of the compatibility flag (compatibility_flag) and the compatibility descriptor (compatibilityDescriptor ()) described with reference to FIG. 4, a DII timeout value (time_out_value_DII), a module information flag (module_info_flag), and a module information flag (module_info_flag). Number (num_of_modules), module identification (module_id), module size (module_size), module information length (module_info_length), module information byte (module_info_byte), and private data area (private_data_data item etc.) Is Le.

The DII timeout value describes a recommended timeout value (unit: millisecond) for reception of all sections of the DII of the carousel when software transmitted in the carousel method is received. In the module information flag, a flag indicating the presence / absence of information for each module in the download content descriptor is described.
The number of modules, module identification, and module size describe the number of modules, module identification, and module size of a DII / DDB message for transmitting software.
The module information length describes the byte length of the module information byte. In the module information byte, necessary ones of a type descriptor, a Name descriptor, an Info descriptor, and a Control descriptor described in DII are stored.

  In the first byte of the private data area, a value indicating download priority, that is, whether to give priority to broadcast or communication as a download path is stored. In the following description, download priority (download_priority) may be referred to as a “priority flag”.

(Configuration of server device)
Next, the configuration of the server device 21 will be described.
FIG. 9 is a block diagram illustrating a configuration of the server device 21 according to the present embodiment. The server device 21 includes a control unit 210, a communication unit 213, and a storage unit 214. The control unit 210 implements the functions of the distribution data acquisition unit 211 and the distribution data distribution unit 212 by executing a control program stored in the storage unit 214 by a CPU (Central Processing Unit) of the server device 21.

  The distribution data acquisition unit 211 acquires the same distribution data as the distribution data generated by the transmission device 11a or the transmission device 11b. The distribution data may be acquired from the transmission devices 11a and 11b by communication means, or may be acquired by reading from a recording medium such as an HDD storing the distribution data. The distribution data acquisition unit 211 reads information such as manufacturer identification, model identification, and version identification of software included in the acquired distribution data. The distribution data acquisition unit 211 stores the manufacturer identification, model identification, and version identification of the read software in association with the acquired distribution data in the storage unit 214. In the following description, software identification information such as manufacturer identification, model identification, and version identification may be referred to as “software identification”.

  The distribution data distribution unit 212 receives a distribution request signal from the receiving device 31. The distribution request signal is a signal for requesting distribution data related to the software identified by the designated software identification. The distribution data distribution unit 212 reads distribution data corresponding to the software identification designated by the distribution request signal from the storage unit 214. The distribution data distribution unit 212 transmits the read distribution data to the receiving device 31 via the communication transmission path 22.

The communication unit 213 is, for example, a communication interface, and transmits and receives various data between the transmission devices 11 a and 11 b and the reception device 31. Transmission / reception by each component of the server device 21 is performed via the communication unit 213.
The storage unit 214 includes, for example, an HDD, a flash memory, a ROM (Read Only Memory), a RAM (Random Access Memory), or any combination thereof, and stores various data.

(Receiver configuration)
FIG. 10 is a block diagram illustrating a configuration of the reception device 31. The receiving device 31 includes a tuner 311, a decoding unit 312, a separation unit 313, an audio decoding unit 314, a reproduction unit 315, a video decoding unit 316, a display unit 317, a communication unit 321, a control unit 331, and a storage unit 341.

  The tuner 311 switches the physical channel according to the channel selection signal specified by the control unit 331, and multiplex data (modulated and encrypted) transmitted by the MMT transmission device 11a and the TS transmission device 11b. Get). The tuner 311 outputs the demodulated multiplexed data (that is, the baseband signal) to the decoding unit 312.

  When the multiplexed data acquired from the tuner 311 is data transmitted from the transmission device 11a, the decryption unit 312 decrypts the multiplexed data using a decryption method corresponding to the encryption method used for the transmission device 11a. In addition, when the multiplexed data acquired from the tuner 311 is data transmitted from the transmission device 11b, the decryption unit 312 performs multiplexing using a decryption method corresponding to the method used by the encryption unit 116b of the transmission device 11b. Decrypt the data. The decoding unit 312 outputs the decoded multiplexed data to the separation unit 313.

  The separation unit 313 reads program data, notification information, control information, and distribution data based on the decoded multiplexed data output from the decoding unit 312. The separation unit 313 outputs the notification information, control information, and distribution data to the control unit 331. Further, the separation unit 313 extracts audio data and video data from the program data. The separation unit 313 outputs the extracted audio data to the audio decoding unit 314 and outputs the video data to the video decoding unit 316.

  The audio data output from the separation unit 313 is data encoded by a predetermined audio encoding method (for example, MPEG-4 audio). The audio decoding unit 314 decodes the audio data using a decoding method corresponding to the encoding method used for encoding. The decoded audio data is data indicating the audio level at each time. The audio decoding unit 314 outputs the decoded audio data to the reproduction unit 315. The reproduction unit 315 is, for example, a speaker, and reproduces audio based on the audio data output from the audio decoding unit 314.

The video data output from the separation unit 313 is data encoded by a predetermined video encoding method such as HEVC (High Efficiency Video Coding), for example. The video decoding unit 316 decodes the video data using a decoding method corresponding to the encoding method used for encoding. The decoded video data is data indicating signal values forming a video (frame image) at each time. The video decoding unit 316 outputs the decoded video data to the display unit 317. The display unit 317 is a display, for example, and reproduces the video data decoded by the video decoding unit 316.
The communication unit 321 is, for example, a communication interface, and transmits and receives various data to and from the server device 21 via the communication transmission path 22.
The storage unit 341 includes, for example, an HDD, a flash memory, a ROM, a RAM, or a combination thereof, and stores various data.

  FIG. 11 is a block diagram illustrating a configuration of the control unit 331. The control unit 331 includes a distribution unit 332, a control information processing unit 333, a notification information detection unit 334, a determination unit 335, a storage unit 336, a data acquisition unit 337, and a switching instruction unit 338. The distribution unit 332 detects the types of notification information, control information, and distribution data output from the separation unit 313. Then, the distribution unit 332 outputs notification information to the notification information detection unit 334, outputs control information to the control information processing unit 333, and outputs distribution data to the data acquisition unit 337. The control information processing unit 333 reads network information related to distribution of distribution data from the control information. For example, in the case of the MMT system, based on the control information, information on the center frequency of the downlink transmission channel is read and output to the tuner 311.

The notification information detection unit 334 detects whether the data structure of the notification information output from the distribution unit 332 is the above-described MMT MH-SDTT format or the above-described TS format SDTT format. The notification information detection unit 334 reads information necessary for downloading the software included in the distribution data from the notification information according to the detected format.
In the case of the MMT method, information necessary for download is, for example, information included in MH-SDTT, information included in an MPU download content descriptor, and MH-network download content descriptor.

  In the case of the TS method, information necessary for download is, for example, information included in SDTT, download content descriptor, and information included in network download content descriptor. Further, information necessary for downloading includes software identification for specifying software to be downloaded, that is, manufacturer identification, model identification, and version identification described in the compatibility descriptor. Further, the notification information detection unit 334 outputs information indicating whether the notification information is the MMT method or the TS method to the determination unit 335.

  The storage unit 336 stores network information that broadcasts notification information by the MMT method and broadcasts distribution data by the TS method. In the present embodiment, as described later, only when the original network identification value is a predetermined value, the MMT information is read as TS information. Thereby, the receiving apparatus 31 can analyze the notification information of the MMT system and receive the in-receiver information update service through either the TS system or the MMT system. Here, an example of information managed by the storage unit 336 will be described with reference to FIG. In the example shown in FIG. 12, the name of the network indicates the type of broadcast such as BS digital broadcast. The replacement target network identification indicates an original network identification value for identifying a predetermined network as a target of replacement processing. Then, the receiving device 31 replaces the information of the MMT method as the information of the TS method only when the value of the original network identification matches the network identification to be replaced in MH-SDTT.

The determination unit 335 performs various determination processes related to software download.
For example, the determination unit 335 determines whether to download the software notified by the notification information. Specifically, the determination unit 335 determines whether or not the notified software is software suitable for its own device with reference to model identification, manufacturer identification, and the like of the notification information. Further, the determination unit 335 refers to the target version, download level, version instruction, and the like of the notification information to determine whether or not the notified device needs to be updated or installed. When it is necessary to download the software, the determination unit 335 determines a route for downloading the software, and instructs the data acquisition unit 337 to download the software.

  For example, the determination unit 335 determines a route for downloading software with reference to the priority flag. When the value of the priority flag is “0x01” or “0x02”, the software is downloaded with priority on broadcasting, and when it is “0x03”, the software is downloaded with priority on communication. Note that “downloading software with priority on broadcasting” means downloading the software by first receiving distribution data by broadcasting and downloading from the server device 21 by communication when the download fails. Downloading software with priority given to communication means downloading the software by first receiving distribution data from the server device 21 through communication, and downloading the software by broadcasting when the download fails.

  For example, when the notification information is in the MMT format, the determination unit 335 determines whether information described in the MMT format needs to be replaced with the TS format. Specifically, the determination unit 335 determines whether or not the MH-SDTT original network identification value matches the replacement target network identification stored in the storage unit 336. In other words, the determination unit 335 determines whether or not the distribution data providing network notified by the MH-SDTT is a target network for the replacement process. The determination unit 335 instructs the data acquisition unit 337 to replace the information described in the MMT method only when it is determined that the information described in the MMT method needs to be replaced with the TS method.

The data acquisition unit 337 downloads software.
The data acquisition unit 337 refers to the start time and the distribution continuation time of the notification information, and specifies the distribution start time and the distribution continuation time of the distribution data.
Further, when downloading software via communication, the data acquisition unit 337 identifies the server device 21 that is the software provider. In the case of the MMT method, the data acquisition unit 337 identifies the server device 21 by reading information on an address necessary for connection of the server device 21 from the MH-network download content descriptor. In the case of the TS method, the data acquisition unit 337 identifies the server device 21 by reading information on an address necessary for connection of the server device 21 from the network download content descriptor.

  In addition, when downloading software via broadcasting, the data acquisition unit 337 identifies a channel on which distribution data is provided, and outputs a switching request to the identified channel to the switching instruction unit 338. In the case of the MMT system, the channel is specified by referring to the original network identification, TLV stream identification, service identification, etc. of MH-SDTT. In the case of the TS system, the channel is specified by referring to the original network identification, transport stream identification, service identification, etc. of SDTT. Here, when data replacement is instructed by the determination unit 335, the data acquisition unit 337 processes the MH-SDTT TLV stream identification as if it is an SDTT transport stream identification.

  In addition, the data acquisition unit 337 identifies the position of distribution data in the TLV stream or transport stream. In the case of the MTT method, the data acquisition unit 337 specifies the position of distribution data in the TLV stream, for example, the DAM timeout value, item information flag, item number, item identification, item size, item included in the MPU download content descriptor This is done by referring to the information length, item information byte, and the like. In the TS system, the position of distribution data in the transport stream is specified by referring to a DII timeout value, a module information flag, the number of modules, a module identification, a module size, a module information length, a module information byte, and the like. Here, when data replacement is instructed by the determination unit 335, the data acquisition unit 337 includes a DAM timeout value, item information flag, item count, item identification, item size, The item information length and the item information byte are processed by regarding the DII timeout value, module information flag, module number, module identification, module size, module information length, and module information byte of the download content descriptor, respectively.

  Through the processing of the determination unit 335 and the data acquisition unit 337 described above, the reception device 31 determines and acquires notification information addressed to itself from model identification, manufacturer identification, and the like, which network, which stream, and which service. It is possible to determine when the data to be downloaded by the device starts.

The data acquisition unit 337 downloads software based on the specified various types of information, and writes the acquired software in the storage unit 341.
The switching instruction unit 338 outputs a channel selection signal for switching channels to the tuner 311 in response to a request from the data acquisition unit 337. Thereby, for example, the provider of distribution data can be switched to either the transmission device 11a or the transmission device 11b.

Next, the operation of the control unit 331 related to software download will be described with reference to FIG.
The control unit 331 acquires notification information and determines whether to download software (step S1). When the software is not downloaded, the control unit 331 ends the process illustrated in FIG. When downloading software, the control unit 331 determines whether the notification information is in the MMT format or the TS format (step S2). When the notification information is the MMT method, the control unit 331 determines whether or not a replacement process is necessary (step S3). The control unit 331 regards information described in the MMT method as information of the TS method only when a replacement process is necessary (step S4).

  Next, the control unit 331 analyzes the information included in the notification information, and determines the distribution start time of the software, the server device 21 that provides the software, the channel on which the software is provided, the distribution data in the TLV stream or the transport stream A position or the like is specified (step S5). Next, the control unit 331 determines whether or not the software distribution start time has arrived (step S6). When the software distribution start time has arrived, the control unit 331 determines whether the own apparatus is in a suspended (standby) state or an activated state (step S7). If the device itself is not in the dormant state, the control unit 331 stops downloading the software and ends the process shown in FIG. When the own apparatus is in the dormant state, the control unit 331 turns on the internal power supply to activate (step S8). That is, the control unit 331 downloads software when a broadcast service through a channel such as viewing a broadcast program is not used.

  Next, the control unit 331 determines a software download path (step S9). When downloading software via broadcasting, the control unit 331 switches the channel to a channel where distribution data is provided (step S10). Then, distribution data is extracted from the TLV stream or the transport stream (step S11). Moreover, when downloading software via communication, the control part 331 accesses the server apparatus 21, and acquires delivery data (step S12). Thereafter, the control unit 331 ends the process illustrated in FIG.

With the configuration of the above embodiment, in the case of broadcasting by the TS method, the receiving device 31 can receive notification information by the TS method and receive distribution data transmitted by the TS method. In this case, it is possible to receive notification information in the MMT system and receive distribution data transmitted in the MMT system. In addition, although the program data is broadcast by the MMT system, the reception device 31 can receive the distribution data even in the case of a network transmitted by the TS system. That is, by writing the network identification information indicating the network in the storage unit 336, the receiving device 31 replaces a part of the MMT notification information with the TS notification information for the network. Thus, distribution data transmitted by the TS method can be received.
As a result, the receiving device 31 can download update data from both the MMT system and TS system in-receiver information update services.

  In the above-described embodiment, the receiving device 31 has been described on the assumption that it also supports downloading by the MMT method, but the present invention is not limited to this. For example, it is conceivable that the download using the MTT method is not operated for the time being. Therefore, when the notification information according to the MTT method indicates downloading according to the MTT method, it may be implemented so as to be ignored without performing the process for receiving the distribution data. For example, if the original network identification of MH-SDTT does not match the replacement target network identification in step 1 of FIG. In this way, since the notification information of the MMT in-receiver update service can be ignored, it is possible to prevent malfunctions such as the reception device 31 being automatically activated from the hibernation state.

  You may make it implement | achieve the control part 331 of the receiver 31 in embodiment mentioned above with a computer. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program held for a certain period of time. Further, the program may be a program for realizing a part of the above-described functions, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system. You may implement | achieve using programmable logic devices, such as FPGA (Field Programmable Gate Array).

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Broadcasting system 11a, 11b Transmission apparatus 12 Broadcast transmission path 13 Broadcasting satellite 21 Server apparatus 22 Communication transmission path 31 Reception apparatus 331 Control part 332 Distribution part 333 Control information processing part 334 Notification information detection part 335 Determination part 336 Storage part 337 Data acquisition Part 338 switching instruction part

The notification information acquisition unit 113a reads and acquires notification information regarding software download acquired by the distribution data acquisition unit 111a from the outside. Here, the notification information is information including manufacturer identification, model identification, version identification, and the like as information for specifying distributed software. The notification information includes information related to software distribution, that is, information such as start time , distribution continuation time, address of the server device 21 that is a distribution data provider, and priority of a route for receiving distribution data. The notification information is information represented by the configuration of a section format table MH-SDTT (Software Download Trigger Table), and the notification information acquisition unit 113a converts the acquired notification information into the MH-SDTT format. The data is output to the multiplexing unit 115a.

In order to solve the above problem, according to one aspect of the present invention, the network of the original distribution system is defined from the notification information transmitted by the first transmission method, which notifies the provision of download data. A notification information detection unit that detects an original network identification as a label and reads information necessary for downloading the download data, and data arranged in the original network identification detected by the notification information detection unit are predetermined. Only when it is determined that the determination unit matches with a determination unit that determines whether or not it matches the identification information, it is arranged in the information necessary for downloading the download data described according to the first transmission method Data is described according to a second transmission method different from the first transmission method. A data acquisition unit for performing said downloading downloads data replaced as data corresponding to information required to download the download data is arranged that a receiving device comprising a.
Further, according to one aspect of the present invention, the network of the original distribution system is defined from the first notification information defined as the first transmission method and transmitted as the download notification information. A notification information detecting unit for detecting data arranged in the original network identification, which is a label to be transmitted, and broadcasting in a second transmission method in which the data arranged in the original network identification detected by the notification information detecting unit is predetermined. And the data arranged in the first notification information only when the data arranged in the original network identification points to the broadcast of the second transmission method. Among the predetermined data, the data corresponding to the second notification information defined in the second transmission method is arranged, Performs re seen, on the basis of the replaced, a receiving apparatus comprising: a data acquisition unit, the use of broadcast of the second transmission scheme to the reception of the downloaded content.
Further, according to one aspect of the present invention, the network of the original distribution system is defined from the first notification information defined as the first transmission method and transmitted as the download notification information. A notification information detecting unit for detecting data arranged in the original network identification, which is a label to be transmitted, and broadcasting in a second transmission method in which the data arranged in the original network identification detected by the notification information detecting unit is predetermined. A determination unit that determines whether or not the data indicates the first transmission information when the data arranged in the original network identification points to the broadcast of the second transmission method, Data corresponding to the second notification information defined by the second transmission method is selected from the data arranged in the first notification information. As being located, performed replaced, on the basis of the replaced, a receiving apparatus comprising: a data acquisition unit, the use of broadcast of the second transmission scheme to the reception of the downloaded content.
Further, according to one aspect of the present invention, the network of the original distribution system is defined from the first notification information defined as the first transmission method and transmitted as the download notification information. A notification information detecting unit for detecting data arranged in the original network identification, which is a label to be transmitted, and broadcasting in a second transmission method in which the data arranged in the original network identification detected by the notification information detecting unit is predetermined. And the second transmission method broadcast for receiving the download content when the device receives the second notification information defined by the second transmission method. When the device receives the first notification information, the data arranged in the original network identification points to the broadcast of the second transmission method. If the data is determined to be valid first notification information, data corresponding to the second notification information is arranged as a part of predetermined data among the data arranged in the first notification information. And a data acquisition unit that performs rereading and uses the broadcast of the second transmission method for receiving download content based on the rereading.
Further, according to another aspect of the present invention, in the reception device, when the data acquisition unit determines that the data arranged in the original network identification does not indicate the broadcast of the second transmission method, the download content Is a receiving apparatus that does not use the second transmission system broadcast for receiving.
Further, according to an aspect of the present invention, in the reception device, when the data acquisition unit determines that the data arranged in the original network identification does not indicate the broadcast of the second transmission method, the replacement is performed. The receiving apparatus uses the broadcast of the first transmission method for receiving the download content without performing the above.
According to another aspect of the present invention, in the receiving device, the first notification information defined by the first transmission method is received on a broadcast transmission path of the first transmission method. The receiving device includes a receiving unit that receives the download content notified of download by the notification information in the broadcast transmission path of the second transmission method.
Further, according to one embodiment of the present invention, in the reception device, the first notification information defined by the first transmission method is received on a broadcast transmission path of the first transmission method, and the second transmission method is performed. The second notification information defined by the transmission method is received on the broadcast transmission path of the second transmission method, and the download content notified of the download by the first notification information is received by the second transmission. It is a receiver provided with the receiving part received on the transmission path of a system broadcast.
Further, according to one embodiment of the present invention, in the reception device, the first notification information defined by the first transmission method is received on a broadcast transmission path of the first transmission method, and the second transmission method is performed. The second notification information defined by the transmission method is received on the broadcast transmission path of the second transmission method, and the download content notified of the download by the first notification information is received by the second transmission. The receiving apparatus includes a receiving unit that receives a download content received through a transmission channel of a broadcasting system and notified of download by the second notification information through a broadcasting channel of the second transmission method .
Further, one aspect of the present invention is MH-SDTT (MH-Software Download Trigger Table) defined by MMT (MPEG Media Transport), which is an original distribution from MH-SDTT transmitted as download notification information. A notification information detection unit that detects data arranged in an original network identification that is a label that defines a network of the system, and a data that is arranged in the original network identification detected by the notification information detection unit is broadcast in advance. A determination unit that determines whether or not it is pointing; if the data arranged in the original network identification indicates a TS (Transport Stream) broadcast, the MH-SDTT is determined to be valid, and the MH-SDTT is determined. Arranged Of the data that has been determined, the data that corresponds to the SDTT (Software Download Trigger Table) defined by the TS is replaced and downloaded based on the replacement. And a data acquisition unit that uses the TS broadcast for content reception.
Further, one aspect of the present invention is MH-SDTT (MH-Software Download Trigger Table) defined by MMT (MPEG Media Transport), which is an original distribution from MH-SDTT transmitted as download notification information. A notification information detection unit that detects data arranged in an original network identification that is a label that defines a network of the system, and a data that is arranged in the original network identification detected by the notification information detection unit is broadcast in advance. A determination unit that determines whether or not it is pointing; if the data arranged in the original network identification indicates a TS (Transport Stream) broadcast, the MH-SDTT is determined to be valid, and the MH-SDTT is determined. Arranged Of the data that has been determined, the data that corresponds to the SDTT (Software Download Trigger Table) defined by the TS is replaced and downloaded based on the replacement. A data acquisition unit that uses the TS-based broadcast for content reception, and the data acquisition unit converts the MH-SDTT TLV stream identification into an SDTT (Software Download Trigger Table) transformer defined by the TS. It is a receiving device that is read as port stream identification.
Further, one aspect of the present invention is MH-SDTT (MH-Software Download Trigger Table) defined by MMT (MPEG Media Transport), which is an original distribution from MH-SDTT transmitted as download notification information. A notification information detection unit that detects data arranged in an original network identification that is a label that defines a network of the system, and a data that is arranged in the original network identification detected by the notification information detection unit is broadcast in advance. A determination unit that determines whether or not it is pointing; if the data arranged in the original network identification indicates a TS (Transport Stream) broadcast, the MH-SDTT is determined to be valid, and the MH-SDTT is determined. Arranged Of the data that has been determined, the data that corresponds to the SDTT (Software Download Trigger Table) defined by the TS is replaced and downloaded based on the replacement. A data acquisition unit that uses the TS-based broadcast for content reception, and the data acquisition unit converts the MH-SDTT TLV stream identification into an SDTT (Software Download Trigger Table) transformer defined by the TS. Port stream identification and replacement, and further, DAM timeout value, item information flag, number of items, item identification, item size, item information length, address of MPU download content descriptor of the MH-SDTT The Temu information bytes, respectively, DII timeout value download content descriptors of the SDTT, module information flag, the number of modules, module identification, module size, module information length, a receiver replaced as a module information bytes.
Further, according to an aspect of the present invention, in the reception device, the MH-SDTT is received via the MMT broadcast transmission path, and the download content notified of the download by the MH-SDTT is transmitted to the TS. It is a receiver provided with the receiving part received on the transmission path of a system broadcast.
One embodiment of the present invention is the above-described receiving device, wherein the data acquisition unit is a receiving device that reads data having different numbers of bits.

In addition, the data acquisition unit 337 identifies the position of distribution data in the TLV stream or transport stream. For M M T method, specific position of the distribution data in the TLV stream data acquisition unit 337, for example, DAM timeout value included in the MPU download content descriptors, the item information flag, the number of items, item identification, item size , By referring to the item information length, item information byte, and the like. In the TS system, the position of distribution data in the transport stream is specified by referring to a DII timeout value, a module information flag, the number of modules, a module identification, a module size, a module information length, a module information byte, and the like. Here, when data replacement is instructed by the determination unit 335, the data acquisition unit 337 includes a DAM timeout value, item information flag, item count, item identification, item size, The item information length and the item information byte are processed by regarding the DII timeout value, module information flag, module number, module identification, module size, module information length, and module information byte of the download content descriptor, respectively.

In the above-described embodiment, the receiving device 31 has been described on the assumption that it also supports downloading by the MMT method, but the present invention is not limited to this. For example, it is also conceivable that the download does not operate the time being due to M M T method. Therefore, the notification information according to M M T method, when the identification information indicates download by M M T scheme may be implemented to ignore without processing for receiving the distribution data. For example, if the original network identification of MH-SDTT does not match the replacement target network identification in step 1 of FIG. In this way, since the notification information of the MMT in-receiver update service can be ignored, it is possible to prevent malfunctions such as the reception device 31 being automatically activated from the hibernation state.

Claims (7)

The notification information transmitted by the first transmission method, and from the notification information for notifying the provision of data, network identification information indicating the network of the data providing source, and information necessary for downloading the data A notification information detection unit to detect;
A determination unit that determines whether or not the network identification information detected by the notification information detection unit matches predetermined network identification information;
Only when the determination unit determines that they match, the information necessary for downloading the data described in accordance with the first transmission method is stored in a second transmission method different from the first transmission method. A data acquisition unit that reads as data and downloads the data from the provider network;
A receiving device. The first transmission method is an MMT method,
The receiving apparatus according to claim 1, wherein the second transmission method is a TS method. The receiving device according to claim 1, wherein the data acquisition unit does not download the data when it is determined that the determination units do not match. If the data acquisition unit determines that the determination unit does not match, the second transmission unit transmits information necessary for downloading the data included in the notification information described according to the first transmission method. The receiving apparatus according to claim 1, wherein the data is downloaded from the network of the provider without being read as system information. A broadcasting system comprising: a first transmission device that performs transmission using a first transmission method; a second transmission device that performs transmission using a second transmission method different from the first transmission method; and a reception device. And
The receiving device is
From notification information for notifying the provision of data, network identification information indicating the network of the data providing source, and a notification information detection unit for detecting information necessary for downloading the data,
When the notification information is transmitted by the first transmission method, it is determined whether or not the network identification information detected by the notification information detection unit matches the network identification information corresponding to the second transmission device. A determination unit to perform,
Only when the determination unit determines that they match, the information necessary for downloading the data described according to the first transmission method is read as the second transmission method information, and the second transmission method is read. A data acquisition unit for downloading the data from the transmission device;
A broadcasting system comprising: The receiving device is notification information transmitted by the first transmission method, and is necessary for downloading the network identification information indicating the network of the data providing source from the notification information for notifying the provision of data, and the data. A first step of detecting the following information:
A second step of determining whether or not the network identification information detected by the reception device matches predetermined network identification information;
The information required for downloading the data described in accordance with the transmission method of the notification information is different from the first transmission method only when the receiving device determines that they match in the second step. A third step of downloading the data from the network of the provider by rereading the information as the second transmission method information;
Including receiving method. On the computer,
The notification information transmitted by the first transmission method, and from the notification information for notifying the provision of data, network identification information indicating the network of the data providing source, and information necessary for downloading the data A first step of detecting,
A second step of determining whether or not the detected network identification information matches predetermined network identification information;
If it is determined in the second step that they match, the information required for downloading the data described according to the transmission method of the notification information is used as the second transmission method information different from the first transmission method. A third step of downloading and downloading the data from the provider network;
Receiving program to execute.

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