JP6433289B2 - Receiving device, broadcasting system, receiving method and receiving program - Google Patents

Description

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

  Conventionally, a receiving apparatus for receiving a digital television broadcast is connected to one or more communication paths for downloading update software in addition to a broadcast wave, as described in Patent Document 1, for example. Broadcast receivers. The broadcast receiving device includes usage state monitoring means for monitoring the usage state of the device itself, and download path changing means for changing the priority order of communication paths for downloading the updated software based on the usage state.

  On the other hand, in 4K / 8K ultra-high-definition television broadcasting (4K / 8K UHDTV: Ultra High Definition Television), as of November 2014, the right-handed circularly polarized wave is transmitted via CS (Communication Salalite) 110 degree satellite in data transmission. (Also called right-handed polarization) is used. In order to achieve both effective use of frequencies and expansion of services, the use of left-handed circularly polarized waves (also called left-handed polarized waves) is scheduled for 2016. Therefore, it is desirable that the receiving device be connected to a reception processing facility that can acquire both a right-handed circularly polarized wave component and a left-handed circularly polarized wave component included in the received broadcast wave.

JP 2012-129657 A

  However, the receiving apparatus is not necessarily connected to a receiving facility for acquiring a right-handed circularly polarized wave component and a left-handed circularly polarized wave component. Therefore, when the above-described software is transmitted with left-handed circular polarization, the software cannot always be updated. However, as a factor that the software cannot be updated, there is also a failure in the reception environment, for example, a decrease in electric field strength due to rain. If this state continues, the software update timing may be lost as a result, and the function of the receiving apparatus may not be exhibited.

The present invention has been made in order to solve the above-described problems, and one aspect of the present invention includes a detection unit that detects a plurality of polarization components included in a received broadcast wave, and the plurality of polarization components. a notification unit for outputting a reception state determining unit determines the reception state of the predetermined polarization component to convey the information about the reception state of the predetermined polarization component data relating to the operation of the apparatus of, An information analysis unit for analyzing information that is carried by a first polarization component different from the predetermined polarization component among the plurality of polarization components and that indicates information indicating a distribution condition of the data; When it is determined that the first polarization component can be received and the second polarization component that is the predetermined polarization component cannot be received, the notification unit notifies that the data cannot be received. It is a receiving device.

  According to the present invention, it is possible to notify the reception state of software carried with a predetermined polarization component.

It is a block diagram which shows the structure of the broadcast system which concerns on 1st Embodiment. It is a block diagram which shows the structure of the transmitter which concerns on 1st Embodiment. It is a figure which shows the example of network information. It is a figure which shows an example of a satellite distribution system descriptor. It is a figure which shows the example of DAM. It is a figure which shows the example of a compatibility descriptor. It is a figure which shows the example of notification information. It is a figure which shows the example of a MPU download content descriptor. It is a figure which shows the example of MH-network download content descriptor. It is a block diagram which shows the structure of the server apparatus which concerns on 1st Embodiment. It is a block diagram which shows the structure of the receiver which concerns on 1st Embodiment. It is a block diagram which shows the structure of the control part which concerns on 1st Embodiment. It is a figure for demonstrating the determination method of the reception state of each polarization component. It is a figure which shows the example of a display of 1st notification information. It is a flowchart which shows the reception process which concerns on 1st Embodiment. It is a flowchart which shows the reception process which concerns on 2nd Embodiment. It is a flowchart which shows the reception process which concerns on 3rd Embodiment.

(First embodiment)
A first embodiment of the present invention will be described 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 a transmission device 11, a server device 21, and a reception device 41. The transmission device 11 and the server device 21 constitute a broadcast facility managed by a broadcaster. The reception device 41 receives a broadcast program broadcast from the transmission device 11 via the reception processing facility 31. The receiving device 41 displays the video of the received broadcast program and reproduces the sound of the broadcast program. The receiver 41 is a television receiver installed in each home or business office.

  The transmission device 11 transmits various data related to broadcasting to the reception processing facility 31 through the broadcast transmission path 12 as broadcast waves. Data transmitted by the transmission device 11 includes program data, software, notification information, and control information. Program data is data indicating the contents of a broadcast program. The software is a computer program for realizing a part or all of the functions of the receiving device 41. The purpose of software transmission is to update existing software used in the receiving device 41. New software to be transmitted is, for example, software that fixes a bug found in existing software of the same type, software that has changed operating parameters, software that has added new functions or deleted some of the existing functions It is. The notification information is information indicating software distribution conditions. The control information is information for demultiplexing (separating) various types of information multiplexed on the broadcast transmission path 12.

  The transmission device 11 assigns program data, notification information, and control information to the first uplink transmission channel of the broadcast transmission path 12 and software to the second uplink transmission channel of the broadcast transmission path 12. The transmission device 11 multiplexes the data allocated to the first uplink transmission channel and the second uplink transmission channel, and sends the multiplexed data to the broadcast transmission path 12 as an uplink broadcast wave. The first uplink transmission channel and the second uplink transmission channel are linearly polarized waves whose polarization directions are orthogonal to each other. A part of the frequency band (for example, 14 GHz band) of the first uplink transmission channel may overlap with part or all of the frequency band of the second uplink transmission channel.

The broadcast transmission path 12 is a transmission path for unidirectionally transmitting broadcast waves indicating various data transmitted by the transmission apparatus 11 to an unspecified number of reception apparatuses 41 simultaneously. The broadcast transmission path 12 includes a relay device (not shown) loaded on the broadcast satellite 13. The relay device shifts the frequency of the upstream broadcast wave received from the transmission device 11. The relay apparatus generates a right-handed circularly polarized wave as a first downlink transmission channel that carries data of the first uplink transmission channel among the uplink broadcast waves whose frequency band is shifted. The relay device generates a left-handed circularly polarized wave as a second downlink transmission channel that carries data of the second uplink transmission channel among the uplink broadcast waves. The relay device multiplexes the generated right-handed circularly polarized wave and left-handed circularly polarized wave, and transmits the multiplexed downstream broadcast wave. Mutual interference can be avoided by changing the polarization characteristics and frequency between the upstream broadcast wave and the downstream broadcast wave.
Note that a part of the broadcast transmission path 12 may include a communication line, for example, a communication line from the transmission device 11 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 server device 21 is a server device that stores newly acquired software. The location of the server device 21 is notified to the receiving device 41 via the broadcast transmission path 12 as a URL (Uniform Resource Locator) as part of the notification information. When the server apparatus 21 receives the software request signal from the receiving apparatus 41, the server apparatus 21 transmits the requested software to the receiving apparatus 41.

  The communication transmission path 22 is a transmission path for bidirectionally transmitting various data between the server device 21 and the receiving device 41. The communication transmission path 22 includes, for example, a wide area communication network such as the Internet having a wired large-capacity backbone network. 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 transmitting various data via the communication transmission path 22 may be referred to as “transmitting (receiving or downloading) by communication”.

  The reception processing facility 31 generates an intermediate frequency (IF) signal by down-converting an antenna that receives a downlink broadcast wave from the broadcast transmission path 12 and a received signal from the received downlink broadcast wave at a predetermined local frequency. A conversion unit is provided. The reception processing facility 31 outputs the generated IF signal to the reception device 41 connected to the own facility. The reception processing facility 31 is, for example, a one-line wiring system that transmits a received IF signal to a plurality of receiving apparatuses using a single cable. In the reception processing facility 31, the circularly polarized wave receiving antenna and the conversion unit may be separate from each other. Further, a booster, a distributor, a television outlet or the like may be interposed between the reception processing facility 31 and the reception device 41.

  The antenna included in the reception processing facility 31 is, for example, a parabolic antenna. The conversion unit performs IF conversion between the right-hand circular polarization component and the left-hand circular polarization component so that the frequency bands of the right-hand circular polarization component and the left-hand circular polarization component after the conversion do not overlap each other. The local frequency used when converting to a signal is different. The frequency bands of the respective polarization components after being converted into IF signals are classified as different physical channels. In other words, the physical channel is associated with the frequency band before and after conversion of each polarization component and its center frequency. In the following description, the converted frequency band and intermediate frequency are referred to as IF frequency band and IF intermediate frequency, respectively.

The reception device 41 receives various data received from the transmission device 11 via the reception processing facility 31. The receiving device 41 detects a right-handed circularly polarized wave component and a left-handed circularly polarized wave component included in the downstream broadcast wave based on the IF signal input from the reception processing facility 31. The receiving device 41 determines the reception state of the left-handed circularly polarized component and outputs notification information related to reception of the left-handed circularly polarized component. When it is determined that the right-handed circularly polarized wave component can be received and the left-handed circularly polarized wave component cannot be received, the receiving device 41 notifies that the software indicated by the notification information cannot be received. Further, when it is determined that the left-handed circularly polarized wave component cannot be received, the reception device 41 may determine that the software reception path is communication.
In addition, when a booster, a distributor, and a television outlet are arranged in front of the receiving device 41, there are frequency bands in which IF signals cannot be transmitted (for example, a frequency band higher than a predetermined frequency). The receiving device 41 may determine that a right-handed circularly polarized wave component can be received and that software download is performed in the frequency band as a left-handed circularly polarized wave component. At this time, the receiving device 41 may notify that the software indicated by the notification information cannot be received, and may determine that the software reception path is communication.

(Configuration of transmitter)
Next, the configuration of the transmission device 11 according to the present embodiment will be described.
FIG. 2 is a block diagram illustrating a configuration of the transmission device 11 according to the present embodiment. The transmission device 11 includes a distribution data acquisition unit 111, a program data acquisition unit 112, a notification information acquisition unit 113, a control information acquisition unit 114, a multiplexing unit 115, encryption units 116-1, 116-2, and a modulation unit 117-1. 117-2. Antennas 118-1 and 118-2 are connected to the transmission device 11.

  The distribution data acquisition unit 111 receives a new version of software. The distribution data acquisition unit 111 converts the input software into data in a predetermined format, for example, section format, and generates distribution data (distribution data). The distribution data acquisition unit 111 transmits the generated distribution data to the broadcast transmission path 12 via the multiplexing unit 115 in a predetermined method, for example, a data carousel method. The data carousel method is a method of repeatedly transmitting the same data for a certain period.

  Specifically, the distribution data acquisition unit 111 divides the input software into a predetermined size, and divides the divided data (divided data) into a predetermined size as an MPU (Media Processing Unit). The divided data is sequentially stored in the MPU in ascending order of individual MPU sequence numbers. In addition, the MPU configuration information is generated as a data asset management table (DAM: Data Asset Management Table). Distribution data is formed by the generated DAM and MPU. The DAM includes, for example, manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) of the software. “Identification (id)” is information for identifying an individual thing, and is sometimes referred to as an “identifier”.

  Program data is input to the program data acquisition unit 112. The program data is data including video data and audio data representing a broadcast program. The program data acquisition unit 112 converts the input program data into a predetermined format, for example, an MMT (Moving Picture Expert Media Transport) format, and outputs the converted program data to the multiplexing unit 115.

  The notification information acquisition unit 113 receives notification information regarding downloading of new software. The notification information includes manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) as information for specifying the software to be distributed. Further, the notification information includes a distribution time, an address of the server device 21 that is a separate distribution source, a priority of the distribution source, that is, a reception (download) route, and the like. The notification information is represented by, for example, a section format table, MH-SDTT (Software Download Trigger Table). The notification information acquisition unit 113 outputs the acquired notification information to the multiplexing unit 115.

  Control information for receiving and separating the above-described data by the receiving device 41 is input to the control information acquisition unit 114. The control information includes distribution of program data and notification information, distribution of distribution data, and network information of each. The network information includes 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 represented by, for example, a network information table (TLV_Network_Information Table ()) for TLV (Type Length Value). The control information acquisition unit 114 outputs the acquired control information to the multiplexing unit 115.

The multiplexing unit 115 multiplexes the program data input from the program data acquisition unit 112, the notification information input from the notification information acquisition unit 113, and the control information input from the control information acquisition unit 114 to obtain a predetermined format. First multiplexed data (for example, TLV format) is generated. Also,
The multiplexing unit 115 converts the distribution data input from the distribution data acquisition unit 111 into second multiplexed data in a predetermined format. The multiplexing unit 115 outputs the generated first multiplexed data to the encryption unit 116-1, and outputs the converted second multiplexed data to the encryption unit 116-2.

The encryption unit 116-1 encrypts the first multiplexed data input from the multiplexing unit 115 using a predetermined encryption method (for example, AES: Advanced Encryption Standard). The encryption unit 116-1 outputs the encrypted first multiplexed data to the modulation unit 117-1.
The encryption unit 116-2 encrypts the second multiplexed data input from the multiplexing unit 115 using a predetermined encryption method. The encryption unit 116-2 outputs the encrypted second multiplexed data to the modulation unit 117-2.

Modulation section 117-1 upconverts the first multiplexed data input from encryption section 116-1 at a predetermined carrier frequency to generate a transmission signal for the first uplink transmission channel. Modulation section 117-1 outputs the generated transmission signal to antenna 118-1.
Modulation section 117-2 up-converts the second multiplexed data input from encryption section 116-2 with a predetermined carrier frequency to generate a transmission signal for the second uplink transmission channel. Modulation section 117-2 outputs the generated transmission signal to antenna 118-2.

  The antenna 118-1 transmits the transmission wave of the first uplink transmission channel based on the transmission signal input from the modulation unit 117-1. The antenna 118-2 transmits the transmission wave of the second uplink transmission channel based on the transmission signal input from the modulation unit 117-2. The transmission wave of the first uplink transmission channel and the transmission wave of the second uplink transmission channel are orthogonal to each other in the polarization direction. The transmission wave of the first uplink transmission channel and the transmission wave of the second uplink transmission channel are, for example, vertical polarization and horizontal polarization, respectively. Thereby, the uplink transmission wave in which the transmission wave of the first uplink transmission channel and the transmission wave of the second uplink transmission channel are multiplexed is transmitted to the relay device of the broadcast satellite 13.

(Data structure of network information)
Next, examples of network information related to distribution of various types of information will be described.
FIG. 3 is a diagram illustrating an example of network information. In the example shown in FIG. 3, the network information is represented by a network information table for TLV. The TLV network information table may include a descriptor area (descriptor ()) for each TLV stream identification (tlv_stream_id). Here, the first uplink transmission channel and the second uplink transmission channel are identified by TLV stream identification. Since the first uplink transmission channel and the second uplink transmission channel correspond to the first downlink transmission channel and the second downlink transmission channel, respectively, the reception device 41 uses the TLV stream identification to identify the first downlink transmission channel and the second downlink transmission channel. A transmission channel can be identified. In the descriptor area (descriptor ()), a satellite distribution system descriptor (Satelite_Delivery_System_Descriptor ()) is described.

(Data structure of satellite distribution system descriptor)
Next, the data structure of the satellite distribution system descriptor will be described.
FIG. 4 is a diagram illustrating an example of a satellite distribution system descriptor. In the example shown in FIG. 4, the satellite distribution system descriptor includes a frequency and a polarization. In the frequency, the center frequency of each downlink transmission channel is described. In the polarization, a value indicating the polarization characteristic is described. For example, “10” and “11” are values indicating left-hand circular polarization and right-hand circular polarization, respectively.

(Data structure of DAM)
Next, an example of DAM used for software transmission will be described.
FIG. 5 is a diagram illustrating an example of the DAM. The DAM has a descriptor area (descriptor ()), and the area includes a compatibility descriptor (CompatibilityDescriptor ()).

(Compatibility descriptor data structure)
Next, the data structure of the compatibility descriptor will be described. The compatibility descriptor (compatibilityDescriptor ()) describes detailed information that cannot be represented by the table identification (table_id) or group area (group) of DAM or MH-SDTT.
FIG. 6 is a diagram illustrating an example of the compatibility descriptor. In the example shown in FIG. 6, the compatibility descriptor includes a model and a version. In the upper 8 bits and lower 8 bits of the model (model), manufacturer identification (maker_id) indicating the producer of the software and model identification (model_id) indicating the target model (model) are described. The version (version_id) indicating the version of the software is described in the version (version).

(Data structure of notification information)
Next, the data structure of MH-SDTT representing the notification information generated by the notification information acquisition unit 113 will be described. FIG. 7 is a diagram illustrating an example of MH-SDTT. In the example illustrated in FIG. 7, the MH-SDTT includes a table identification extension (table_id_extension), a target version (target_version), a new version (new_version), a download level (download_level), a version indication (version_indicator), a version number (version), and a start time. (Start_time), distribution duration (duration), and descriptor area (descriptors ()).

The maker identification (maker_id) is described in the upper 8 bits of the table identification extension (table_id_extension), and the model identification (model_id) is described in the lower 8 bits.
The target version (target_version) describes the version identification of the software to be updated. In the new version (new_version), the version identification of the software transmitted by the transmission device 11 is described.
In the download level (download_level), a value indicating a download mode is stored. For example, “01” indicates forced download, and “00” indicates optional download.
The version instruction (version_indicator) indicates the range of versions to be updated. '00' indicates all versions, and '03' indicates only the specified version.

The start time (start_time) indicates a time at which the transmission apparatus 11 starts transmission of software.
The distribution continuation time (duration) indicates a time during which the transmission device 11 continues to transmit software. 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 and an MH-network download content descriptor are described.

(Data structure of MPU download content descriptor)
Next, the data structure of the MPU download content descriptor will be described.
FIG. 8 is a diagram illustrating an example of the MPU download content descriptor. The MPU download content descriptor includes a compatibility flag (compatibility_flag), a compatibility descriptor (compatibilityDescriptor ()), an item number (num_of_items), an item identification (item_id), an item size (item_size), and a private data area te_pati including.

The compatibility flag (compatibility_flag) is a flag indicating the presence / absence of a compatibility descriptor (compatibilityDescriptor ()).
The compatibility descriptor (compatibilityDescriptor ()) includes the same content as the above-described compatibility descriptor (FIG. 6). Here, manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) are described. Note that the item means data transmitted in download, in this embodiment, software.

  Download priority (download_priority) is described in the first byte of the private data area (private_data_byte). In the download priority (download_priority), a value indicating which of broadcast and communication is given priority as a download path is stored. In the following description, download priority (download_priority) may be referred to as a “priority flag”.

(MH-Network Download Content Descriptor Data Structure)
Next, the data structure of the MH-network download content descriptor will be described. FIG. 9 is a diagram illustrating an example of the MH-network download content descriptor. The MH-network download content descriptor includes a compatibility flag (compatibility_flag), a compatibility descriptor (compatibilityDescriptor ()), a session protocol number (session_protocol_number), a reconnection count (retry), an address type (address) type, and an address type. (Address_type) and port number (port_number).
The compatibility flag (compatibility_flag) is set with a value (1) indicating that there is a compatibility descriptor (compatibilityDescriptor ()), as in the example shown in FIG. The compatibility descriptor (compatibilityDescriptor ()) includes the same content as the above-described compatibility descriptor (FIG. 6).

  The session protocol number (session_protocol_number) is a number indicating a protocol (for example, TCP: Transmission Control Protocol) used for network download, that is, download via the communication transmission path 22. The address type (address_type) is a number indicating the type of address indicating the location of the transmission source communication server. In the example shown in FIG. 9, any of IPv4, IPv6, and URL (Uniform Resource Locator) can be specified as the address type. The address indicates the location of the transmission source communication server (for example, the server device 21), and is an address represented by the type specified by the address type (address_type). The port number (port_number) indicates the port number of the communication server.

(Server device configuration)
Next, the configuration of the server device 21 will be described. FIG. 10 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. The control unit 210 is, for example, a CPU.

  The distribution data acquisition unit 211 acquires the same distribution data as the software distribution data generated by the distribution data acquisition unit 111 of the transmission device 11. The distribution data acquisition unit 211 reads the software manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) from the DAM included in the acquired distribution data. The distribution data acquisition unit 211 stores the read software maker identification (maker_id), model identification (model_id), and version identification (version_id) in association with the acquired distribution data in the storage unit 214. Accordingly, the server device 21 stores distribution data related to the latest version of software that can be transmitted at that time. The distribution data acquisition unit 211 may acquire distribution data of the software from the transmission device 11 or may acquire the distribution data independently of the transmission device 11. In the following description, a set of manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) may be referred to as “software identification”.

  The distribution data distribution unit 212 receives a distribution request signal from the receiving device 41. 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 41 via the communication transmission path 22.

The communication unit 213 transmits and receives various data between external devices, for example, the transmission device 11 and the reception device 41. Transmission / reception by each component of the server device 21 is performed via the communication unit 213. The communication unit 213 is, for example, a communication interface.
The storage unit 214 stores various data. The storage unit 214 includes a storage medium, for example, an HDD (Hard-Disk Drive), a flash memory, a ROM (Read-only Memory), a RAM (Random Access Memory), or any combination thereof.

(Receiver configuration)
Next, the configuration of the receiving device 41 will be described. FIG. 11 is a block diagram illustrating a configuration of the receiving device 41 according to the present embodiment. The receiving device 41 includes a tuner 411 (detection unit), a decoding unit 412, a separation unit 413, an audio decoding unit 414, a reproduction unit 415, a video decoding unit 416, a screen synthesis unit 417, a display unit 418, a communication unit 421, and a control unit 431. And a storage unit 441.

The tuner 411 detects an IF frequency band component (right-handed circularly polarized wave component) corresponding to the physical channel specified by the operation signal for the IF signal input from the reception processing facility 31. The operation signal is an operation signal generated by an operation input unit (not shown) in response to a user operation input. For example, the operation input unit may be a dedicated member such as a switch, a knob, or a remote controller, or may be a general-purpose member such as a touch sensor.
The tuner 411 demodulates the IF frequency band component into first multiplexed data that is a baseband signal at the center frequency, and outputs the demodulated first multiplexed data to the decoding unit 412. Further, the tuner 411 outputs reception level information indicating the level of the component in the IF frequency band to the control unit 431.

  Further, the tuner 411 detects a component (left-handed circularly polarized wave component) of the IF frequency band corresponding to the second frequency information input from the control unit 431 using the method described above for the IF signal. The second frequency information is information indicating the center frequency of the second downlink transmission channel indicated by the control information received from the transmission device 11. The tuner 411 demodulates the IF frequency band component to the second multiplexed data that is the baseband signal at the center frequency, and outputs the demodulated second multiplexed data to the decoding unit 412. Further, the tuner 411 outputs reception level information indicating the level of the component in the IF frequency band to the control unit 431.

The decryption unit 412 corresponds to the scheme used by the encryption units 116-1 and 116-2 of the transmission device 11 for the demodulated first multiplexed data and second multiplexed data (encrypted), respectively. Decoding is performed using a decoding method (for example, AES). Decoding section 412 outputs the decoded first multiplexed data and second multiplexed data to demultiplexing section 413.
The separation unit 413 separates the first multiplexed data input from the decoding unit 412 into program data, notification information, and control information. The separation unit 413 outputs the notification information and the control information to the control unit 431. Further, the separation unit 413 extracts audio data and video data from the program data. The separation unit 413 outputs the extracted audio data to the audio decoding unit 414 and outputs the video data to the video decoding unit 416. The separation unit 413 extracts distribution data from the second multiplexed data input from the decoding unit 412, and outputs the extracted distribution data to the control unit 431.

The audio decoding unit 414 receives audio data from the separation unit 413. The input audio data is data encoded by a predetermined audio encoding method (for example, MPEG-4 audio). The audio decoding unit 414 decodes audio data input by a decoding method corresponding to the encoding method used for encoding, and generates decoded audio data. The decoded audio data is data indicating the audio level at each time. The audio decoding unit 414 outputs the decoded audio data to the reproduction unit 415.
The reproduction unit 415 reproduces audio based on the audio data input from the audio decoding unit 414. The playback unit 415 includes, for example, a speaker.

  The video decoding unit 416 receives video data from the separation unit 413. The input video data is data encoded by a predetermined video encoding method (for example, HEVC: High Efficiency Video Coding). The video decoding unit 416 decodes video data input by a decoding method corresponding to the encoding method used for encoding, and generates decoded video data. The decoded video data is data indicating signal values forming a video (frame image) at each time. The video decoding unit 416 outputs the decoded video data to the screen synthesis unit 417.

The screen combining unit 417 combines the video indicated by the video data input from the video decoding unit 416 and the screen indicated by the screen data input from the control unit 431. The screen synthesis unit 417 outputs display data indicating the synthesized video obtained by synthesis to the display unit 418.
The display unit 418 reproduces the synthesized video indicated by the display data input from the screen synthesis unit 417. The display unit 418 includes a display, for example.

The communication unit 421 transmits and receives various data to and from the server device 21 via the communication transmission path 22. Transmission / reception by each component of the reception device 41 is performed via the communication unit 421. The communication unit 421 is a communication interface, for example.
The control unit 431 controls various operations of the receiving device 41. For example, the control unit 431 analyzes the notification information input from the separation unit 413, and identifies the software related to the operation of the device received by the left-handed circularly polarized wave component and the distribution condition of the software. Further, the control unit 431 determines the reception state of a predetermined polarization component among the left-handed circularly polarized wave component and the right-handed circularly polarized wave component based on the reception level information input from the tuner 411. When the control unit 431 determines that the right-handed circularly polarized wave component can be received and the left-handed circularly polarized wave component cannot be received, the control unit 431 outputs the first screen data indicating the first notification information to the screen combining unit 417. The first notification information is information indicating that the software cannot be received because the left-handed circularly polarized wave receiving facility is not connected. When determining that the right-handed circularly polarized wave component and the left-handed circularly polarized wave component cannot be received, the control unit 431 outputs second screen data indicating the second notification information to the screen combining unit 417. The second notification information is information indicating that software cannot be received due to a reception failure. A functional configuration of the control unit 431 will be described later.

  The storage unit 441 stores various data. For example, the storage unit 441 stores the first screen data and the second screen data described above in advance. The storage unit 441 includes a storage medium, for example, an HDD (Hard-disk Drive), a flash memory, a ROM (Read-only Memory), a RAM (Random Access Memory), or a combination thereof.

(Configuration of control unit)
Next, the configuration of the control unit 431 according to the present embodiment will be described. FIG. 12 is a block diagram illustrating a configuration of the control unit 431 according to the present embodiment. The control unit 431 includes a control information analysis unit 432, a notification information analysis unit 433, a reception state determination unit 434, a notification unit 435, a reception route determination unit 436, and a software acquisition unit 437.

  The control information analysis unit 432 uses the control information input from the demultiplexing unit 413 as network information related to distribution of distribution data, from each frequency region and polarization region for each TLV stream. Read characteristics. Here, the control information analysis unit 432 reads the center frequency of the first downlink transmission channel from the frequency region of the TLV stream related to the second multiplexed data (distribution data), and is described in the polarization region. The sign indicating the polarization characteristics (right-handed circular polarization) is read. The control information analysis unit 432 associates the read first frequency information indicating the center frequency of the first downlink transmission channel with the code indicating the polarization characteristic (right-handed circularly polarized wave) and outputs it to the reception state determination unit 434. To do. In addition, the control information analysis unit 432 reads the center frequency of the second downlink transmission channel from the frequency region of the TLV stream related to the second multiplexed data (distribution data), and is described in the polarization region. Read the sign indicating the polarization characteristics (left-hand circular polarization). The control information analysis unit 432 associates the read second frequency information indicating the center frequency of the second downlink transmission channel with the code indicating the polarization characteristic (left-handed circularly polarized wave) and outputs it to the reception state determination unit 434. . In addition, the control information analysis unit 432 outputs the second frequency information to the tuner 411.

  The notification information analysis unit 433 extracts the start time (start_time) and the distribution continuation time (duration) from the notification information input from the separation unit 413, and specifies the distribution time. The notification information analysis unit 433 extracts manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) from the notification information, and specifies the software to be received. The notification information analysis unit 433 extracts a priority flag (download_priority) from the notification information. The notification information analysis unit 433 extracts the address of the server device 21 that is the transmission source by communication from the notification information. The notification information analysis unit 433 outputs the extracted priority flag (download_priority) to the reception path determination unit 436. The notification information analysis unit 433 outputs the extracted start time (start_time), distribution duration (duration), manufacturer identification (maker_id), model identification (model_id), version identification (version_id), and address to the software acquisition unit 437.

  The reception state determination unit 434 determines the reception state for each component of the IF frequency band indicated by the reception level information input from the separation unit 413. As illustrated in FIG. 13A, the reception state determination unit 434 includes the components (right right) of IF frequency bands ib1 and ib2 corresponding to the first frequency information and the second frequency information input from the control information analysis unit 432, respectively. When the levels of the circularly polarized wave component and the left circularly polarized wave component are higher than a predetermined level threshold Ld, it is determined that each component can be received. On the other hand, in FIG. 13B, the level of the component (right-handed circularly polarized wave component) in the IF frequency band ib1 exceeds the threshold Ld, and the level of the component (left-handed circularly polarized wave component) in the IF frequency band ib2 is the threshold value. It shows that it is below Ld. In this case, the reception state determination unit 434 determines that the component of the IF frequency band ib1 (right-handed circularly polarized wave component) can be received and cannot receive the component of the IF frequency band ib2 (left-handed circularly polarized wave component). Is determined. In this case, the reception state determination unit 434 determines that it does not support reception of a left-handed circularly polarized wave component.

  Note that when the reception state determination unit 434 determines that both the component of the IF frequency band ib1 (right-handed circular polarization component) and the component of the IF frequency band ib2 (left-handed circular polarization component) cannot be received, a reception failure occurs. It is determined that As described above, the left-handed circularly polarized wave component is a component that carries the distribution data forming the second multiplexed data. It is specified whether or not the equipment for receiving the polarization is inadequate. The reception state determination unit 434 generates reception state information indicating the determined reception state, and outputs the generated reception state information to the notification unit 435 and the reception path determination unit 436.

  Returning to FIG. 12, the notification unit 435 reads screen data corresponding to the reception state information input from the reception state determination unit 434 from the storage unit 441, and outputs the read screen data to the screen composition unit 417. When the reception state information indicates that a right-handed circularly polarized wave component can be received and a left-handed circularly polarized wave component cannot be received, the notification unit 435 reads the first screen data and screen-synthesizes the read first screen data. Output to the unit 417. Accordingly, the first notification information indicating that the software cannot be received due to the left-handed circularly polarized wave receiving equipment not connected is displayed on the display unit 418. In the example shown in FIG. 14, the first notification information nl displayed on the display unit 418 is a character string “This antenna cannot be downloaded because antenna equipment for receiving a left-handed circularly polarized wave is not connected”. It is comprised including. When the reception state information indicates that neither the right-handed circularly polarized wave component nor the left-handed circularly polarized wave component can be received, the notification unit 435 reads the second screen data and outputs the read second screen data to the screen composition unit 417. . In that case, second notification information indicating that the software cannot be received due to a reception failure is displayed on the display unit 418.

  The reception route determination unit 436 determines the reception route based on the notification information analyzed by the notification information analysis unit 433 and the reception state information from the reception state determination unit 434. The reception path determination unit 436 determines a reception path for downloading software based on the priority flag (download_priority) input from the notification information analysis unit 433. For example, when the value set in the priority flag (download_priority) is 0x01 or 0x02, the reception path determination unit 436 determines that the download is first performed by broadcasting, and determines the reception path as communication when the download fails. When the value set in the priority flag (download_priority) is 0x03, the reception path determination unit 436 determines that the download is first performed by communication, and determines the reception path as broadcast when the download fails. The reception path determination unit 436 outputs a reception path signal indicating which of communication and broadcast is used as the reception path to the software acquisition unit 437.

  The software acquisition unit 437 receives the reception path signal input from the reception path determination unit 436 at the distribution time specified by the start time (start_time) and the distribution continuation time (duration) input from the notification information analysis unit 433. Get software via the route. The software to be acquired by the software acquisition unit 437 is specified by the manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) input from the notification information analysis unit 433. When the reception path is broadcast, the software acquisition unit 437 inputs distribution data of the software from the separation unit 413. When the reception path is communication, the software acquisition unit 437 generates a distribution request signal for requesting the software, and the generated distribution request signal is specified by the address input from the notification information analysis unit 433. To the server device 21. The software acquisition unit 437 can receive distribution data related to software requested from the server device 21 as a response to the distribution request signal.

The software acquisition unit 437 reconfigures software by sequentially connecting MPUs constituting the input or received distribution data. The software acquisition unit 437 stores the reconfigured software in the storage unit 441 in association with the manufacturer identification (maker_id), model identification (model_id), and version identification (version_id) that specify the software.
Note that when the notification information includes a descriptor instructing activation of the software to be received, the control unit 431 may activate the acquired software and execute the function.

(Receiver operation)
Next, the operation of the receiving device 41 will be described. FIG. 15 is a flowchart showing the operation of the receiving device 41 according to this embodiment.
(Step S101) The separation unit 413 obtains notification information (MH-SDTT) from the first multiplexed data obtained by demodulating the right-handed circularly polarized wave component detected by the tuner 411. Thereafter, the process proceeds to step S102.
(Step S102) The notification information analysis unit 443 analyzes the notification information (MH-SDTT) and specifies the acquisition target software and the distribution time as the software acquisition conditions. Thereafter, the process proceeds to step S103.

(Step S103) The reception state determination unit 434 determines the reception state of the left-handed circularly polarized wave component. When it is determined that reception is possible (step S103 YES), the process proceeds to step S107. When it is determined that reception is impossible (NO in step S103), the process proceeds to step S104.
(Step S104) The reception state determination unit 434 determines the reception state of the right-handed circularly polarized wave component. If it is determined that reception is possible (YES in step S104), the process proceeds to step S105. When it is determined that reception is impossible (NO in step S104), the process proceeds to step S106.

(Step S <b> 105) The notification unit 435 outputs the first screen data read from the storage unit 441 to the screen composition unit 417. The notification unit 435 causes the display unit 418 to display the first notification information indicating that the software cannot be received due to the connection of the left-handed circularly polarized wave receiving equipment being disconnected. Thereafter, the process shown in FIG.
(Step S <b> 106) The notification unit 435 outputs the second screen data read from the storage unit 441 to the screen composition unit 417. The notification unit 435 causes the display unit 418 to display the inability to receive software due to a reception failure (for example, rain attenuation) based on this output. Thereafter, the process shown in FIG.
(Step S107) The software acquisition unit 437 acquires the software indicated by the distribution data carried by the left-handed circularly polarized wave component, and stores the acquired distribution data in the storage unit 441. Thereafter, the process shown in FIG.

As described above, the receiving device 41 according to the present embodiment includes the tuner 411 that detects a plurality of polarization components included in the received broadcast wave, and software related to the operation of the own device among the plurality of polarization components. And a reception state determination unit 434 that determines the reception state of a predetermined polarization component that carries the signal. In addition, the reception device 41 includes a notification unit 435 that outputs notification information regarding a reception state of a predetermined polarization component.
With this configuration, it is possible to notify the user of the reception state of the software carried with a predetermined polarization component. Therefore, the user is prompted to take measures for receiving a predetermined polarization component carrying the software, for example, installation and inspection of a receiving facility for the polarization component.

Further, in the receiving device 41, notification information carried by the first polarization component different from the predetermined polarization component among the plurality of polarization components, and software distribution conditions relating to the operation of the receiving device 41 are set. It further includes a notification information analysis unit 433 that analyzes the notification information to be shown. Further, when it is determined that the first polarization component can be received and the second polarization component, which is a predetermined polarization component, cannot be received, the notification unit 435 notifies the notification information indicating that the software cannot be received. To do.
With this configuration, as a reason that the software distributed under the distribution conditions indicated by the received notification information cannot be received, it is specified that the reception facility capable of receiving the second polarization component is not included, and other reasons, For example, it can be distinguished from reception failure due to rain attenuation or the like. Further, the notification information is distributed by the first polarization component that can be received by the majority of receiving facilities, so that the update of the software and the distribution conditions thereof are notified.

  The first polarization component is a right-handed circular polarization component, and the second polarization component is a left-handed circular polarization component. Thereby, since it is not necessary to arrange | position the structure part of the antenna which receives a broadcast wave to a specific direction, the receiving equipment provided with the antenna of a simple structure can be utilized.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to the drawings. About the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and description is used.
In the reception device 41 according to the present embodiment, the reception state determination unit 434 stores reception state information indicating the determined reception state in the storage unit 441. In the storage unit 441, a history of reception states of each polarization component is formed. The reception state determination unit 434 reads the reception state information stored in the past from the storage unit 441, and based on the read reception state information, the IF frequency band component (left-handed circularly polarized wave component) corresponding to the second frequency information. Determine whether there is a history of successful reception. The absence of the reception state information indicates that the left-handed circularly polarized wave component has not been received. If there is no history of successful reception of the left-handed circularly polarized wave component, the reception state determining unit 434 receives the right-handed circularly-polarized wave component without determining whether the left-handed circularly-polarized wave component can be received at that time. Determine if you can. If there is a history of successful reception of the left-handed circularly polarized wave component, the reception state determining unit 434 determines whether or not each of the left-handed circularly polarized wave component and the right-handed circularly polarized wave component can be received using the method described above. .

When it is determined that there is no history of successful reception of the left-handed circularly polarized component and it is possible to receive the right-handed circularly polarized component, the notification unit 435 reads the first screen data described above, The read first screen data is output to the screen composition unit 417. Accordingly, the first notification information indicating that the software cannot be received due to the left-handed circularly polarized wave receiving equipment not connected is displayed on the display unit 418.
When it is determined that there is no history of successful reception of the left-handed circularly polarized wave component and the right-handed circularly polarized wave component cannot be received, the notification unit 435 reads the second screen data described above and reads it. The second screen data is output to the screen composition unit 417. Therefore, the second notification information indicating that the software cannot be received due to a reception failure is displayed on the display unit 418.

(Receiver operation)
Next, the operation of the receiving device 41 will be described. FIG. 16 is a flowchart showing the operation of the receiving device 41 according to this embodiment. The process illustrated in FIG. 16 includes steps S101 to S107 and step S113. For the processing shown in steps S101 to S107, the above description is incorporated. However, after the process of step S102 is completed, the process proceeds to step S113.

(Step S113) The reception state determination unit 434 reads the reception state information stored in the past from the storage unit 441, and determines whether there is a history of successful reception of the left-handed circularly polarized wave component based on the read reception state information. . If it is determined that there is (NO in step S113), the process proceeds to step S103. If it is determined that there is no such (YES in step S113), the process proceeds to step S104.
In step S103, the reception state determination unit 434 stores reception state information indicating the reception state of the left-handed circularly polarized wave component in the storage unit 441. In step S104, the reception state determination unit 434 stores reception state information indicating the reception state of the right-handed circularly polarized wave component in the storage unit 441.
Note that the process shown in FIG. 16 may be executed after the process shown in FIG. 15 is executed a predetermined number of times or more or for a predetermined period. Further, for example, after the reception processing facility 31 is updated or inspected, the reception state determination unit 434 may delete (reset) the reception state information stored in the storage unit 441 in response to an operation signal input by a user operation. Good.

As described above, in the reception device 41 according to the present embodiment, the reception state determination unit 434 has no history of successfully receiving the second polarization component (for example, the left-handed circular polarization component), and the first When it is determined that a polarization component (for example, a right-handed circular polarization component) can be received, the notification unit 435 notifies that the software related to the operation of the reception device 41 carried by the second polarization component cannot be received. Outputs notification information.
If there is no history of successful reception of the second polarization component, it is presumed that the second polarization component is not connected to a receiving facility for receiving the polarization component. The process for determining whether or not the polarization component can be received can be omitted.

(Third embodiment)
A third embodiment of the present invention will be described with reference to the drawings. About the same structure as embodiment mentioned above, the same code | symbol is attached | subjected and description is used.
In the reception device 41 according to the present embodiment, the reception path determination unit 436 determines that the reception path is communication when the reception state information input from the reception state determination unit 434 indicates that the left-handed circularly polarized wave component cannot be received. . In that case, the software acquisition unit 437 acquires software via communication, that is, via a network.

(Receiver operation)
Next, the operation of the receiving device 41 will be described. FIG. 17 is a flowchart showing the operation of the receiving device 41 according to this embodiment. The process illustrated in FIG. 17 includes steps S101 to S107 and step S128. The process described in steps S101 to S107 uses the above description. However, after the processing shown in steps S105 and S106 is completed, the process proceeds to step S128.

(Step S128) When the reception state information input from the reception state determination unit 434 indicates that the left-handed circularly polarized wave component cannot be received, the reception route determination unit 436 determines that the reception route is communication. The software acquisition unit 437 acquires software via a network. Then, the process shown in FIG. 17 is complete | finished.
In addition, although the process shown in FIG. 17 takes the case of having the process of step S128 after the process shown in FIG. 15, it is not restricted to this. The process of step S128 may be performed after the process shown in FIG.

As described above, when it is determined that the second polarization component (for example, the left-handed circular polarization component) that is the predetermined polarization component cannot be received, the reception device 41 according to the present embodiment receives the reception device 41. 41 includes a reception path determination unit 436 that determines communication as a software reception path of the operation 41.
With this configuration, the software acquisition unit 437 acquires the software through communication, so that the reception device 41 can reliably update the software.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope indicated in the claims, and the technical configurations disclosed in different embodiments are appropriately combined. The obtained embodiment is also included in the technical scope of the present invention.
Each component of the present invention can be arbitrarily selected, and an invention having a selected configuration is also included in the present invention.

For example, the transmission device 11 and the server device 21 may be configured as a single transmission device. Further, any of the modulation units 117-1 and 117-2 and the antennas 118-1 and 118-2 of the transmission device 11 or a combination thereof may be separate from the other parts of the transmission device 11.
Either or both of the reproduction unit 415 and the display unit 418 of the reception device 41 may be separate from the other parts of the reception device 41. Further, the notification information may be notified by voice from the playback unit 415.

  In the above-described embodiment, the transmission apparatus 11 transmits mainly various types of data to the reception processing facility 31 via the broadcast transmission path 12. However, the example mainly uses right-handed circular polarization and left-handed circular polarization. The polarization characteristics of the plurality of transmission channels are different from each other, and preferably orthogonal polarizations may be used. For example, horizontal polarization and vertical polarization may be used. Further, if the tuner 411 can extract each polarization component according to the IF frequency band of the IF signal input from the reception processing equipment 31, the right-handed circular polarization component is not necessarily used as shown in FIG. The left-handed circularly polarized component does not have to be higher. For example, in the IF signal, the right-handed circularly polarized wave component may be lower than the left-handed circularly polarized wave component if the frequency bands do not overlap between the polarized wave components.

  In the above-described embodiment, the case where the media transport system according to MMT (MPEG Media Transport) defined by MPEG-H is used as the transmission system for transmitting various data is exemplified. A method, for example, a method defined by MPEG-2 Systems may be used. In addition, a data format, an encryption method, and an encoding method related to transmission may be a format or a method defined by the transmission method. For example, distribution data indicating software may be transmitted as a DII (Download Info Indication) message or a DDB (Download Data Block) message instead of the DAM and MPU.

  Moreover, you may make it implement | achieve a part of the transmitter 11 in the embodiment mentioned above, a part of server apparatus 21, and a part of receiver 41 with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed. Here, the “computer system” is a computer system built in the recognition data transmission apparatus, and 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” is a medium that dynamically holds a program for a short time, such as 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 that serves as a server or a client may be included that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

In addition, this invention can be implemented also in the following aspect.
(1) A detection unit that detects a plurality of polarization components included in a received broadcast wave, and a reception state of a predetermined polarization component that carries software related to the operation of the own apparatus among the plurality of polarization components is determined. A receiving apparatus comprising: a reception state determination unit that performs notification; and a notification unit that outputs notification information regarding a reception state of the predetermined polarization component.

(2) Notification information that is carried by a first polarization component that is different from the predetermined polarization component among the plurality of polarization components, and that analyzes notification information indicating a distribution condition of the software An analysis unit, and when it is determined that the first polarization component can be received and the second polarization component, which is the predetermined polarization component, cannot be received, the notification unit, as the notification information, (1) A receiving apparatus that notifies that software cannot be received.

(3) The reception apparatus according to (2), further including a reception path determination unit that determines that the reception path of the software is communication when it is determined that the second polarization component cannot be received.

(4) The receiving apparatus according to (2) or (3), wherein the first polarization component is a right-handed circular polarization component, and the second polarization component is a left-handed circular polarization component.

(5) When the reception state determination unit determines that there is no history of successful reception of the second polarization component and the first polarization component can be received, the notification unit outputs the notification information The receiving device according to any one of (2) to (4).

(6) A broadcasting system including a transmission device and a reception device, wherein the transmission device carries software related to the operation of the reception device, which is a part of a plurality of types of data, and another polarization, respectively. A broadcast wave including polarization components having different polarization characteristics from each other, and the reception device detects a plurality of polarization components included in the received broadcast wave, and the detection unit A reception state determination unit that determines a reception state of a predetermined polarization component that carries a part of the data among polarization components detected by the signal, and a notification unit that outputs notification information regarding the reception state of the predetermined polarization component A broadcasting system comprising:

(7) A receiving method in a receiving apparatus, a detection process for detecting a plurality of polarization components included in a received broadcast wave, and a predetermined method for carrying software related to the operation of the own apparatus among the plurality of polarization components A reception method comprising: a reception state determination process for determining a reception state of a polarized wave component; and a notification process for outputting notification information regarding the reception state of the predetermined polarization component.

(8) A detection procedure for detecting a plurality of polarization components included in the received broadcast wave to a computer of the reception device, and a predetermined polarization component that carries software related to the operation of the device among the plurality of polarization components A reception program for executing a reception state determination procedure for determining the reception state of the notification, and a notification procedure for outputting notification information regarding the reception state of the predetermined polarization component.

  DESCRIPTION OF SYMBOLS 1 ... Broadcasting system, 11 ... Transmission apparatus, 111 ... Delivery data acquisition part, 112 ... Program data generation part, 113 ... Notification information acquisition part, 114 ... Control information acquisition part, 115 ... Multiplexing part, 116-1, 116- DESCRIPTION OF SYMBOLS 2 ... Encryption part, 117-1, 117-2 ... Modulation part, 118-1, 118-2 ... Antenna, 12 ... Broadcast transmission path, 13 ... Broadcasting satellite, 21 ... Server apparatus, 210 ... Control part, 211 ... Distribution data acquisition unit, 212 ... Distribution data distribution unit, 213 ... Communication unit, 214 ... Storage unit, 22 ... Communication transmission path, 31 ... Reception processing equipment, 41 ... Reception device, 411 ... Tuner, 412 ... Decoding unit, 413 ... Separation unit, 414 ... audio decoding unit, 415 ... reproduction unit, 416 ... video decoding unit, 417 ... screen synthesis unit, 418 ... display unit, 421 ... communication unit, 431 ... control unit, 432 ... control information analysis unit, 433 Announcement information analyzing unit, 434 ... reception state determination unit, 435 ... notification unit, 436 ... reception path determination unit, 437 ... software acquisition unit, 441 ... storage unit

Claims (8)

A detection unit for detecting a plurality of polarization components included in the received broadcast wave;
A reception state determination unit that determines a reception state of a predetermined polarization component that carries data related to the operation of the device among the plurality of polarization components;
A notification unit for outputting information about the reception state of the predetermined polarization component,
An information analysis unit that analyzes information indicating a delivery condition of the data, which is information carried by a first polarization component different from the predetermined polarization component among the plurality of polarization components;
Bei to give a,
When it is determined that the first polarization component can be received and the second polarization component that is the predetermined polarization component cannot be received, the notification unit notifies that the data cannot be received. . A detection unit for detecting a plurality of polarization components included in the received broadcast wave;
A reception state determination unit that determines a reception state of a predetermined polarization component that carries software related to the operation of the device among the plurality of polarization components;
A notification unit that outputs notification information related to a reception state of the predetermined polarization component;
A notification information analysis unit for analyzing notification information indicating a distribution condition of the software, the notification information being conveyed by a first polarization component different from the predetermined polarization component among the plurality of polarization components ; ,
With
When it is determined that the first polarization component can be received and the second polarization component, which is the predetermined polarization component, cannot be received, the notification unit cannot receive the software as the notification information. you notice
RECEIVER. A reception path determination unit that determines that the reception path of the software is communication when it is determined that the second polarization component cannot be received;
The receiving device according to claim 2. 3. The notification unit outputs the notification information when the reception state determination unit determines that there is no history of successful reception of the second polarization component and the first polarization component can be received. Alternatively, the receiving device according to claim 3 . The first polarization component is a right-handed circular polarization component, and the second polarization component is a left-handed circular polarization component.
The receiving device according to any one of claims 1 to 4 . A broadcasting system comprising a transmitting device and a receiving device,
The transmitter is
Transmits broadcast waves containing polarization components that carry software components related to the operation of the receiving device, which are a part of a plurality of types of data, and other parts, respectively, and that have different polarization characteristics. ,
The receiving device is:
A detection unit for detecting a plurality of polarization components included in the received broadcast wave;
A reception state determination unit for determining a reception state of a predetermined polarization component carrying a part of the data among the polarization components detected by the detection unit;
A notification unit that outputs notification information related to a reception state of the predetermined polarization component;
A notification information analysis unit for analyzing notification information indicating a distribution condition of the software, the notification information being conveyed by a first polarization component different from the predetermined polarization component among the plurality of polarization components; ,
With
When it is determined that the first polarization component can be received and the second polarization component, which is the predetermined polarization component, cannot be received, the notification unit cannot receive the software as the notification information. Notice
Broadcasting system. A receiving method in a receiving device,
A detection process for detecting a plurality of polarization components included in the received broadcast wave;
A reception state determination process for determining a reception state of a predetermined polarization component that carries software related to the operation of the device among the plurality of polarization components;
A notification process for outputting notification information regarding a reception state of the predetermined polarization component;
A notification information analysis process for analyzing notification information that is carried in a first polarization component different from the predetermined polarization component among the plurality of polarization components, and that indicates notification information indicating a distribution condition of the software; ,
I have a,
When it is determined that the first polarization component can be received and the second polarization component, which is the predetermined polarization component, cannot be received, the notification process indicates that the software cannot be received as the notification information. Notice
Receive method. In the computer of the receiving device,
A detection procedure for detecting a plurality of polarization components included in the received broadcast wave;
A reception state determination procedure for determining a reception state of a predetermined polarization component that carries software related to the operation of the device among the plurality of polarization components;
A notification procedure for outputting notification information regarding the reception state of the predetermined polarization component;
Notification information that is conveyed in a first polarization component that is different from the predetermined polarization component among the plurality of polarization components, and that analyzes notification information indicating a distribution condition of the software,
A receiving program for executing
When it is determined that the first polarization component can be received and the second polarization component that is the predetermined polarization component cannot be received, the notification procedure indicates that the software cannot be received as the notification information. Receiving program to notify .

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