JP6700658B2 - Receiving device, receiving method, and program - Google Patents

Description

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

  As a next-generation television broadcasting service, test broadcasting has started to 4K ultra-high-definition television broadcasting (UHDTV: Ultra High Definition Television, hereinafter referred to as 4K broadcasting). Furthermore, research and development on 8K ultra-high-definition television broadcasting (hereinafter referred to as 8K broadcasting) are under way.

  Further, a receiver has been proposed that selects fixed broadcast or mobile broadcast according to the reception quality (see, for example, Patent Document 1). In the technique described in Patent Document 1, when the reception quality of the 12-segment broadcast drops below the first threshold value while the 12-segment broadcast is being selectively reproduced, the reception quality of the 1-segment broadcast becomes the second threshold value. A message indicating that switching to one-segment broadcasting is possible is displayed on condition that the value is maintained or more and simulcast is being performed. Then, in the technique described in Patent Document 1, when the viewer performs a switching operation within a fixed time, the 12-segment broadcasting is switched to the 1-segment broadcasting.

JP, 2007-96508, A

  However, the technique described in Patent Document 1 has a problem that the received video data cannot be displayed on the display device when the resolution of the received video data is higher than the resolution of the display device connected to the reception device.

  The present invention has been made in view of the above points, and it is easy to use ultra-high-definition television broadcasting even when the resolution of received video data is higher than the resolution of a display device connected to the receiving device. It is an object of the present invention to provide a receiving device, a receiving method, and a program that can be performed.

  (1) The present invention has been made to solve the above problems, and a receiving device according to one aspect of the present invention receives a broadcast wave including program data and configuration data including information about a program. The resolution of the video data included in the program data can be displayed on the display device based on the receiving unit, the configuration data included in the program data received by the receiving unit, and the information indicating the resolution of the video. A resolution determination unit that determines whether the resolution is a resolution, and if the resolution determination unit determines that the resolution of the video data cannot be displayed on the display device, the resolution of the video data cannot be displayed on the display device. A notification information generation unit that notifies information indicating that.

  (2) In the receiving method in the receiving device according to one aspect of the present invention, the receiving unit includes a receiving procedure for receiving a broadcast wave including program data and configuration data including information about a program, and a resolution determining unit. The resolution of the video data included in the program data is the resolution that can be displayed on the display device based on the configuration data included in the program data received by the receiving procedure and the information indicating the video resolution. If the resolution determination procedure for determining whether or not the resolution of the video data cannot be displayed on the display device by the resolution determination procedure, the resolution of the video data is determined by the display device. And a notification information generating procedure for notifying information indicating that the information cannot be displayed.

  (3) Further, according to an aspect of the present invention, a reception procedure of receiving a broadcast wave including program data and configuration data including information about a program, and the configuration included in the program data received by the reception procedure. A resolution determination procedure for determining whether the resolution of the video data included in the program data is a resolution that can be displayed on a display device, based on the data and information indicating the resolution of the video, and the resolution determination procedure. If it is determined by the display device that the resolution of the video data cannot be displayed on the display device, a computer is caused to execute a notification information generation procedure for notifying information indicating that the resolution of the video data cannot be displayed on the display device. Program for.

  According to the present invention, even if the resolution of the received video data is higher than the resolution of the display device connected to the receiving device, it is possible to facilitate the use of the ultra-high-resolution television broadcast.

It is a block diagram which shows the structure of the broadcasting 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 explaining the example of the structure of the protocol stack used for a broadcasting system. It is a figure explaining the example of the structure of the protocol stack in a communication line. It is a figure which shows the example of MPT. It is a figure which shows the example of a data structure of an asset group descriptor. It is a figure which shows the example of MH-video component descriptor. It is a figure which shows the example of the information described in a video signal resolution. It is a block diagram which shows the structure of the receiver which concerns on 1st Embodiment. It is a figure which shows the example of the image of the alerting information displayed on the display apparatus which concerns on 1st Embodiment. It is a figure which shows the example of the image of the alerting information displayed on a display device when there is no simulcast which can be displayed on the display device which concerns on 1st Embodiment. It is a flow chart which shows a procedure of information processing and receiving processing concerning a 1st embodiment. It is a figure which shows the example of the data structure of MH-event information table. It is a block diagram which shows the structure of the receiver which concerns on 2nd Embodiment. It is a flow chart which shows a procedure of information processing and receiving processing concerning a 2nd embodiment. It is a block diagram which shows the structure of the receiver which concerns on 3rd Embodiment. It is a figure which shows the example of the image of the alerting information displayed on the display apparatus which concerns on 3rd Embodiment. It is a flow chart which shows a procedure of information processing and receiving processing concerning a 3rd embodiment.

<Explanation of roadmap for 4K/8K ultra-high-definition television broadcasting>
According to the roadmap released by the Ministry of Internal Affairs and Communications on September 9, 2014 (see Reference 1), practical broadcasting of 4K ultra high definition television (UHDTV: Ultra High Definition Television) was started in Japan in 2015, and in 2018. Practical broadcasting of 8K ultra-high resolution television broadcasting has started. In the following description, 4K and 8K ultra-high resolution television broadcasting will be simply referred to as 4K broadcasting and 8K broadcasting. In this roadmap, 4K and 8K broadcasts are scheduled to be broadcast by satellite, cable television network, IPTV, etc. In addition, according to this roadmap, it has been proposed to start experimental broadcasting of 8K broadcasting from 2016, and to broadcast 4K broadcasting and 8K broadcasting in time division by satellite.

The 4K broadcast scheduled for practical broadcasting in Japan is a broadcast having a spatial resolution of 3840×2160. The 8K broadcast is a broadcast having a spatial resolution of 7680×4320. The broadcast currently being broadcast is called 2K broadcast, and the spatial resolution of 2K broadcast is 1920×1080.
In addition, the 4K and 8K broadcasting multiplexing systems scheduled for practical broadcasting in Japan are MMT (MPEG Media Transport, see International Standard 1) and TLV (Type Length Value, see International Standard 2) IP-based multiplexing. A scheme has been proposed.

(Reference 1) “Follow-up meeting on 4K/8K roadmap: Summary of interim report”, [online], Ministry of Internal Affairs and Communications, [Search on November 22, 2014], <URL:http://www.soumu.go .jp/main_content/000312824.pdf>
(International Standard 1) MPEG-H MMT (ISO/IEC 23008-1:2014)
(International Standard 2) ITU-R Recommendation BT.1869 (2010)

<First Embodiment>
A first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of a broadcasting system 1 according to this embodiment.
As shown in FIG. 1, the broadcasting system 1 is configured to include a transmitting device 20, a server device 30, a broadcasting satellite 41, a radio tower 42, a network 43, a receiving device 10, and a display device 15. The transmission device 20 constitutes a broadcasting facility owned by a broadcasting company.
The receiving device 10 and the display device 15 may be, for example, an integrated device in which the display device 15 includes the receiving device 10.

  The transmission device 20 constitutes a broadcasting facility owned by a broadcasting company. The transmitter 20 transmits the multiplexed data to the broadcasting satellite 41 and the radio tower 42, and stores the multiplexed data in the server device 30. The transmitting device 20 stores the multiplexed data in the server device 30 in advance, for example, before broadcasting the multiplexed data. The multiplexed data includes video data, audio data, and additional data of a broadcast program. Here, the video data is at least one of 2K broadcast video data, 4K broadcast video data, and 8K broadcast video data. For example, the transmission device 20 broadcasts 8K broadcast multiplexed data via the broadcast satellite 41, 2K broadcast multiplexed data via the radio tower 42, and 4K broadcast via the server device 30 and the network 43. Deliver multiplexed data. That is, the transmission device 20 can simulcast multiplex data of different spatial resolutions for one broadcast program by the broadcast satellite 41, the radio tower 42, the server device 30 and the network 43.

The broadcasting satellite 41 receives the multiplexed data transmitted from the terrestrial transmitter 20, and modulates the received multiplexed data. The broadcasting satellite 41 transmits radio waves of the modulated multiplexed data to the ground. The broadcasting satellite 41 is at least one of a broadcasting satellite (BS) by an artificial satellite and a communication satellite (CS).
The radio tower 42 receives the multiplexed data transmitted from the transmitter 20, and modulates the received multiplexed data. The radio tower 42 transmits radio waves of modulated multiplexed data. The radio tower 42 modulates and transmits at a UHF band frequency used in a terrestrial digital broadcasting system, for example.

The server device 30 stores the multiplexed data distributed from the transmitting device 20, and distributes the stored multiplexed data to the receiving device 10 via the network 43 (distribution service). The transmission device 20 and the server device 30 are connected via a cable 25, for example. The transmitting device 20 and the server device 30 may be connected via a network. The distribution service is, for example, one of a VOD (video on demand) service, an IP multicast service, a download service, and an IP retransmission service.
Hereinafter, broadcasting from the broadcasting satellite 41 or the radio tower 42 is also referred to as broadcasting using a broadcasting network. The broadcast from the network 43 is also referred to as a broadcast using a communication network.

  The receiving device 10 and the display device 15 are installed in each home or business office. The receiving device 10 is, for example, a tuner, a recorder having a tuner, or the like. The receiving device 10 receives the multiplexed data broadcast from the transmitting device 20, and performs demodulation processing, separation processing, decoding processing, etc. on the received multiplexed data to separate it into video data, audio data, and constituent data. And decrypt. The receiving device 10 outputs image information based on the separated and decoded video data and configuration data to the display device 15. If the display device 15 has an audio output device, the receiving device 10 also outputs the separated and decoded audio data to the display device 15. The receiving device 10 determines the spatial resolution of the video data included in the received program data based on the received additional data. Then, the receiving device 10 generates notification information for notifying that the receiving device 10 cannot display the image data when the image data has a spatial resolution that cannot be displayed. Subsequently, the reception device 10 combines the generated notification information with the video data, and outputs the combined video data and configuration data to the display device 15. Then, the receiving device 10 determines, based on the information included in the additional data, whether or not the displayable multiplexed data is broadcast or distributed by another broadcast service. When the displayable multiplexed data is broadcast or distributed by another broadcasting service, the receiving device 10 receives the displayable multiplexed data and displays the video data and the configuration data included in the received multiplexed data. Output to the device 15.

The display device 15 outputs the displayable resolution information indicating the resolution of the image that can be displayed by the display device 15 to the receiving device 10. Here, the displayable resolution information includes at least one of the spatial resolution, the vertical resolution of the video signal, and the information indicating the type of broadcast. The information indicating the type of broadcast is at least one of 2K broadcast, 4K broadcast, and 8K broadcast.
The display device 15 also displays an image based on the display video data output by the receiving device 10. The receiving device 10 and the display device 15 are connected by wire, for example, by an HDMI (registered trademark) (High-Definition Multimedia Interface; high-definition multimedia interface) cable. When the display device 15 has an audio output device, the display device 15 reproduces audio based on the audio data output by the receiving device 10.

(Structure of transmitter)
Next, the configuration of the transmission device 20 according to the present embodiment will be described.
FIG. 2 is a block diagram showing the configuration of the transmission device 20 according to this embodiment. The transmission device 20 includes a program data generation unit 211, a configuration information generation unit 212, a multiplexing unit 213, an encryption unit 214, an RF transmission unit 215, and an IP communication unit 216.

  The program data generation unit 211 acquires video data showing a video and audio data showing a voice that form a broadcast program. The program data generation unit 211 acquires video data encoded by a predetermined video encoding method. The predetermined video encoding method is, for example, an ISO/IEC 23008 HEVC (International Organization for Standardization/International Electronic Commission 23008 Part 2 High Efficiency Vide), or simply referred to as a "Hideco Video," which is also referred to as an ISO/IEC 23008 HEVC. The program data generation unit 211 acquires audio data encoded by a predetermined audio encoding method. The predetermined audio encoding method is, for example, an audio encoding method specified by ISO/IEC 14496 Part 3 (also simply referred to as MPEG-4 audio). The program data generation unit 211 generates program data in a predetermined format from the acquired video data and audio data, and outputs the generated program data to the multiplexing unit 213. The program data of a predetermined format is, for example, an MPU (Media Processing Unit) defined by ISO/IEC 23008 Part1 MMT (MPEG Media Transport, also simply referred to as MMT). Each MPU includes video data or audio data in a unit capable of decoding video or audio.

  The configuration information generation unit 212 acquires component element information that is information for configuring a broadcast program or a service provided along with the broadcast. The component element information is an asset that is a component of a broadcast program or service, that is, a list of video, audio, etc., information indicating various requirements thereof, for example, information indicating the spatial resolution of a program, and the same for other broadcast services. The information includes information indicating that the program is being broadcast and information indicating the spatial resolution of the program being broadcast by another broadcasting service. The configuration information generation unit 212 generates configuration data in a predetermined format from the acquired component element information, and outputs the generated configuration data to the multiplexing unit 213. The configuration data in a predetermined format is, for example, MPT (MMT Package Table) that constitutes MMT-SI (MMT-System Information). An example of MPT will be described later.

  The multiplexing unit 213 multiplexes the program data output by the program data generation unit 211 and the configuration data output by the configuration information generation unit 212 to generate multiplexed data in a predetermined form. The predetermined format is, for example, a TLV (Type Length Value) packet. The multiplexing unit 213 outputs the generated multiplexed data to the encryption unit 214.

  The encryption unit 214 encrypts the multiplexed data output by the multiplexing unit 213 using a predetermined encryption method. The predetermined encryption method is, for example, AES (Advanced Encryption Standard). The encryption unit 214 outputs the encrypted multiplexed data to the RF transmission unit 215 and the IP communication unit 216.

  The RF transmission unit 215 transmits the multiplexed data output by the encryption unit 214 to the broadcasting satellite 41 and the radio tower 42. The RF transmitter 215 modulates a carrier wave having a predetermined carrier frequency with multiplexed data which is a baseband signal, and radiates a radio wave (broadcast wave) in a channel band corresponding to the carrier frequency from an antenna (not shown). ..

  The IP communication unit 216 stores the multiplexed data in the server device 30 by outputting the multiplexed data output by the encryption unit 214 to the server device 30 via the cable 25.

(Structure of protocol stack of system using MMT)
Next, an example of the structure of the protocol stack of the system using the MMT will be described. The protocol stack includes a protocol stack used in a broadcasting system and a protocol stack in a communication line.
First, an outline of the structure of the protocol stack used in the broadcasting system will be described.
FIG. 3 is a diagram illustrating an example of the structure of a protocol stack used in the broadcasting system. As shown in FIG. 3, the protocol stack used in the broadcasting system includes TMCC (Transmission and Multiplexing Configuration Control), time information, encoded video data, encoded audio data, encoded caption data, and MMT-. It is configured to include an application (also simply referred to as an application) described in the SI and HTML5 standards, content download data, and the like. The code of the video signal and the audio signal of the broadcast program is MFU (Media Fragment Unit)/MPU. Then, the MFU/MPU is carried on the MMTP payload, converted into an MMTP packet by the transmission device 20, and transmitted by the transmission device 20 as an IP packet. In the transmission of the data content, the data is converted into MMTP packets by the transmission device 20 and transmitted by the transmission device 20 as an IP packet. The IP packet configured as described above is transmitted by the transmission device 20 in the form of a TLV packet when being broadcast using a broadcast transmission path. One IP packet or one header-compressed IP packet is transmitted by the transmission device 20 as one TLV packet (ARIB (Association of Radio Industries and Businesses)) STD-B32 and STD-B. -60).

  Further, the protocol stack used in the broadcasting system is provided with two types of control information, MMT-SI and TLV-SI. MMT-SI is control information indicating the configuration of a broadcast program and the like. In the MMT-SI, the format of the MMT control message is used, the transmitting apparatus 20 puts the MMTP payload into an MMTP packet, and the transmitting apparatus 20 transmits it as an IP packet. The TLV-SI is control information relating to multiplexing of IP packets, and provides information for channel selection and IP address-service correspondence information.

  FIG. 3 shows an example of the structure of a protocol stack used in the broadcasting system. In FIG. 3, TMCC is the control information that is inserted and transmitted in a transmission frame in a hierarchical modulation method that specifies a modulation method and an error correction method for each unit (slot) of a signal on a transmission path. HEVC (High Efficiency Video Coding) is a method of encoding a video signal. AAC (Advanced Audio Coding) and ALS (Audio Loss Coding) are methods for encoding audio signals. UDP/IP (User Datagram Protocol/Internet Protocol) is one of the protocols used for communication. TLV (TYPE LENGTH VALUE) is one of data multiplexing methods, and data encoding is configured by three data types (Type), length (Length), and value (Value).

Next, the structure of the protocol stack in the communication line will be described in some detail.
FIG. 4 is a diagram illustrating an example of the structure of the protocol stack in the communication line. As shown in FIG. 4, the protocol stack in the communication line includes time information, encoded video data, encoded audio data, encoded caption data, MMT-SI, and an application described in the HTML5 standard ( (Also referred to simply as an application), content download data, and the like. In the communication line, the transmission device 20 transmits the IP packet as it is according to the distribution form of unicast/multicast.
In FIG. 4, HTTP (Hypertext Transfer Protocol) is one of communication protocols.

(MPT data structure)
Next, an example of an MPT (MMT Package Table) that gives information that configures a package, such as a list of assets included in the configuration data and a position of the asset on the network, will be described.
FIG. 5 is a diagram showing an example of MPT. In the example illustrated in FIG. 5, the MPT includes an MPT descriptor area (MPT_descriptors_byte) and an asset type (asset_type) for each asset. The MPT descriptor area (MPT_descriptors_byte) is an area in which MPT descriptors are described.
The configuration information generator 212 (FIG. 2) generates an MH-video component descriptor (MH-Video_Component_Descriptor()). The MH-video component descriptor is a descriptor in which parameters relating to video data which form a program are described.

(Data structure of asset group descriptor)
Next, an example of the asset group descriptor (Asset_Group_Descriptor()) will be described. FIG. 6 is a diagram showing an example of the data structure of the asset group descriptor. As shown in FIG. 6, the asset group descriptor includes a descriptor tag (descriptor_tag), a descriptor length (descriptor_length), a group ID (group_identification), and a selection level (selection_level).
The asset group descriptor describes information that provides asset group relationships and priorities within the groups.

  In FIG. 6, the descriptor tag describes information for identifying each descriptor. The descriptor length describes the number of data bytes that follow this field. In the group ID, an ID in which assets such as video and audio are grouped is described. The selection level describes a value indicating the selection level within the group. The value of the selection level is 0 by default. Therefore, the selection level indicates that when the default asset cannot be selected, the asset with the smallest number in the group is a candidate that is prioritized in order.

(Data structure of MH-video component descriptor)
Next, parameters and description regarding the video component will be shown, and an example of the MH-video component descriptor (MH-video_Component_Descriptor()), which is also used for expressing the elementary stream in a character format, will be described.
FIG. 7 is a diagram showing an example of the MH-video component descriptor. In the example illustrated in FIG. 7, the MH-video component descriptor includes a descriptor tag (descriptor_tag), a descriptor length (descriptor_length), a video signal resolution (video_resolution), a video signal aspect ratio (video_aspect_ratio), and a video scan flag (video_scan_scan_scan). , Video signal frame rate (video_frame_rate), component tag (component_tag), language code (ISO_639_language_code).

  In FIG. 7, information for identifying each descriptor is described in the descriptor tag. The descriptor length describes the number of data bytes that follow this field. The video signal resolution (video_resolution) describes the vertical resolution of the video signal and is encoded according to FIG.

FIG. 8 is a diagram showing an example of information described in the video signal resolution. In the example shown in FIG. 8, when the video signal resolution is 5, the spatial resolution of 2K broadcasting is represented, when the video signal resolution is 6, it represents the spatial resolution of 4K broadcasting, and when the video signal resolution is 7, Indicates the spatial resolution of 8K broadcasting.
Returning to FIG. 7, the video signal aspect ratio describes the video signal aspect ratio.
The video scan flag describes a flag indicating whether the video signal is an interlace signal or a progressive signal. The video signal frame rate describes the frame rate of the video signal. A label for identifying a component stream is described in the component tag.
The language code describes information for identifying the language of the component (voice or data) and the language of the character description included in this descriptor.

(Structure of receiving device)
Next, the configuration of the receiving device 10 will be described.
FIG. 9 is a block diagram showing the configuration of the receiving device 10 according to the present embodiment. The reception device 10 includes an RF reception unit 101, an IP communication unit 102, a demodulation/cancellation unit 103, a separation unit 104, a control unit 105, a storage unit 106, a voice decoding unit 107, a loudspeaking unit 108, a video decoding unit 109, and an image switching unit. 110 and an operation input unit 111. Further, the control unit 105 includes a resolution acquisition unit 1051, a resolution determination unit 1052, a notification information generation unit 1053, and a reception data selection unit 1054.

  Channel information indicating a broadcast channel band corresponding to a broadcast channel is input to the RF receiving unit 101 from the control unit 105. The RF receiving unit 101 receives the radio wave of the multiplexed data transmitted by the broadcasting satellite 41 or the radio tower 42, and selects the radio wave of the broadcast channel band corresponding to the channel information from the received radio waves of the multiplexed data. An antenna (not shown) of the RF receiver 101 converts radio waves in the selected broadcast channel band into electric signals. The RF receiving unit 101 outputs the multiplexed data converted into an electric signal to the demodulation/demodulation unit 103.

  Communication instruction information received from the control unit 105 is input to the IP communication unit 102. The communication instruction information includes an IP address. The IP communication unit 102 receives the multiplexed data distributed by the server device 30 via the network 43 according to the communication instruction information, and outputs the received multiplexed data to the demodulation/demodulation unit 103.

  The demodulation/cancellation unit 103 receives the selection signal output by the reception data selection unit 1054 of the control unit 105. The demodulation/cancellation unit 103 receives the multiplexed data based on the radio waves received from the broadcasting satellite 41, the multiplexed data based on the radio waves received from the radio tower 42, and the multiplexed data received by the IP communication unit 102 according to the selection signal. Select one of them. If the selected multiplexed data is modulated, the demodulation/cancellation unit 103 demodulates the modulated multiplexed data. The demodulation/demodulation unit 103 deciphers the selected multiplexed data by an encryption method (for example, AES) corresponding to the method used by the encryption unit 214 of the transmission device 20, and demultiplexes the multiplexed data. The data is output to the separation unit 104.

  The demultiplexing unit 104 demultiplexes the multiplexed data output by the demodulation/demodulation unit 103 into program data and configuration information. The separation unit 104 outputs the configuration information to the control unit 105. The separation unit 104 also extracts audio data and video data from the program data. The separation unit 104 outputs the extracted audio data to the audio decoding unit 107 and outputs the video data to the video decoding unit 109.

  The control unit 105 controls various operations of the receiving device 10. Information indicating an operation result output by the operation input unit 111, configuration data output by the separation unit 104, and displayable resolution information output by the display device 15 are input to the control unit 105. The control unit 105 generates a selection signal based on the information indicating the operation result and the configuration data, and outputs the generated selection signal to the RF reception unit 101 and the IP communication unit 102.

The resolution acquisition unit 1051 acquires the displayable resolution information output by the display device 15, and outputs the acquired displayable resolution information to the resolution determination unit 1052.
The resolution determination unit 1052 extracts an asset group descriptor from the MPT asset group descriptor area included in the configuration data. The resolution determination unit 1052 extracts the asset group descriptor having the same group ID from the extracted asset group descriptor. The resolution determination unit 1052 selects an asset group descriptor whose asset group descriptor selection level is 0. The resolution determination unit 1052 extracts the MH-video component descriptor corresponding to the selected selection level 0 from the MPT descriptor area of MTP. The resolution determination unit 1052 detects the resolution of the video data of the currently received broadcast program based on the video signal resolution of the extracted MH-video component descriptor. The resolution determination unit 1052 determines whether the video data can be displayed on the display device 15 based on the detected resolution of the video data and the displayable resolution information output by the resolution acquisition unit 1051.
When the video data of the selection level 0 can be displayed on the display device 15, the resolution determination unit 1052 outputs information indicating that the reception or the reception of the multiplexed data is continued to the reception data selection unit 1054.

When the video data of the selection level 0 is not displayable on the display device 15, the resolution determination unit 1052 provides information indicating the resolution of the video data and information indicating that the video data cannot be displayed on the display device 15 with the notification information generation unit. Output to 1053. After outputting to the notification information generation unit 1053, the resolution determination unit 1052 selects another unconfirmed selection level of the same group ID from the description of the asset group descriptor when the video data cannot be displayed on the display device 15. The resolution determining unit 1052 extracts the MH-video component descriptor corresponding to the selected selection level from the MPT descriptor area of MTP. The resolution determination unit 1052 detects the resolution of the video data of the broadcast program of the selected selection level based on the video signal resolution of the extracted MH-video component descriptor. The resolution determination unit 1052 determines whether the video data can be displayed on the display device 15 based on the detected resolution of the video data and the displayable resolution information output by the resolution acquisition unit 1051.
The resolution determination unit 1052 sequentially detects the resolution of the video data of the broadcast program corresponding to the selection level of the asset group descriptor for the same group ID.

If there is a simulcast with video data having a resolution that can be displayed on the display device 15 (hereinafter, also referred to as simul video, a broadcast composed of higher layer video and lower layer video is included), the resolution determination unit 1052 selects. The broadcast channel band corresponding to the broadcast network of the transmission source and the broadcast channel to which the multiplexed data including the video data of the resolution that can be displayed on the display device 15 is transmitted, or the communication of the distribution source, based on the asset group descriptor Extract network and IP address. The resolution determining unit 1052 associates the extracted broadcast network of the transmission source and the information indicating the broadcast channel band corresponding to the broadcast channel with the information indicating each resolution, and the associated information is used as the information indicating the transmission source. Output to 1053. Further, the resolution determining unit 1052 associates the extracted communication network, the IP address, and the information indicating the resolution with each other, and outputs the associated information to the notification information generating unit 1053 as information indicating the distribution source. The resolution determination unit 1052 outputs information indicating the transmission source or the distribution source of the simulcast to the reception data selection unit 1054 based on the extracted result.
When it is determined based on the asset group descriptor that there is no simul video in the reception network and the communication network different from the currently received reception network and communication network, the resolution determination unit 1052 receives information indicating that there is no simul image in the reception data. Output to the selection unit 1054.

  The notification information generation unit 1053 displays the currently received or received video data based on the information indicating the resolution of the video data output by the resolution determination unit 1052 and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the device 15 cannot display is generated. The notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. The notification information is an image, for example, image information including character information "This display device does not support 8K broadcasting" as in the example shown in FIG. FIG. 10 is a diagram showing an example of an image of the notification information displayed on the display device 15 according to the present embodiment. The example shown in FIG. 10 is an example in which the display device 15 can display video data of resolutions of 2K broadcast and 4K broadcast, but cannot display 8K broadcast. The example shown in FIG. 10 is an example in which the image information g101 including the character information "This display device does not support 8K broadcasting" is displayed on the display surface D of the display device 15.

  Further, the notification information generation unit 1053 generates notification data indicating that there is no simulcast that can be displayed on the display device 15, based on the information indicating that there is no simul video output by the resolution determination unit 1052. The notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. The notification information is an image, for example, image information including text information "This display device does not support 8K broadcasting" as in the example shown in FIG. FIG. 11 is a diagram showing an example of an image of notification information displayed on the display device 15 when there is no simulcast that can be displayed on the display device 15 according to the present embodiment. The example shown in FIG. 11 is also an example in which the display device 15 can display video data of resolutions of 2K broadcast and 4K broadcast, but cannot display 8K broadcast, as in FIG. 10. The example shown in FIG. 11 is an example in which the image information g111 including the text information "This display device does not support 8K broadcasting" is displayed on the display surface D of the display device 15.

  In the present embodiment, the example in which the notification information is the image information including the character information has been described, but the present invention is not limited to this. The notification information may be voice information. In this case, the notification information generation unit 1053 may convert, for example, the character information “There is no simulcast that can be displayed on this display device” into an audio signal, and output the converted audio signal to the loud sound unit 108. .. The notification information generation unit 1053 may perform the notification using at least one of the character information and the voice signal.

The reception data selection unit 1054 generates a selection signal based on the information indicating the transmission source or the distribution source of the simulcast output by the resolution determination unit 1052. The selection signal is a signal for selecting the multiplexed data received or received by any broadcasting network or communication network. When the selection signal is a signal for selecting a broadcast network, the control unit 105 generates channel information and outputs the generated channel information to the RF receiving unit 101.
When there are a plurality of simultaneous broadcasts that can be displayed on the display device 15, the reception data selection unit 1054 selects the asset group descriptor having the highest resolution that can be displayed on the display device 15 among the detected resolutions. The selection signal is generated based on the information indicating the transmission source of the selected simulcast or the information indicating the distribution source.

  For example, if the channel selected by the user operating the operation input unit 111 is the multiplexed data received from the broadcasting satellite 41 and the resolution of the video data included in the multiplexed data is 8K broadcast, the control unit 105 The multiplexed data is received via the radio tower 42 selected by the resolution determination unit 1052. At this time, the control unit 105 outputs, to the RF reception unit 101, channel information corresponding to the channel transmitting the simulcast in order to select simulcast from the radio waves received from the radio tower 42.

  The storage unit 106 stores various data. The storage unit 106 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.

  The audio decoding unit 107 decodes the audio data output by the separating unit 104 by a decoding method corresponding to the encoding method used for encoding (for example, MPEG-4 audio) to generate original audio data. The decoded audio data is data indicating the audio level at each time. The voice decoding unit 107 outputs the decoded original voice data to the voice amplification unit 108.

  The loudspeaker 108 reproduces a voice based on the voice data input from the voice decoder 107. The loud speaker 108 is configured to include, for example, a speaker. The loudspeaker 108 includes at least a number of speakers corresponding to a predetermined number of channels. The predetermined number of channels corresponds to the number of channels designated by the reproduction method capable of processing audio data in the audio decoding unit 107.

  The video decoding unit 109 decodes the video data output from the separation unit 104 by the video data input by the decoding system corresponding to the coding system (for example, HEVC) used for the encoding, and the original video data is obtained. To generate. The decoded video data is data indicating a signal value forming a video (frame image) at each time. The video decoding unit 109 outputs the decoded video data to the image switching unit 110.

  When the notification data output by the notification information generation unit 1053 of the control unit 105 is input, the image switching unit 110 sets the notification data as display video data for display. In addition, when the notification data output by the notification information generation unit 1053 of the control unit 105 is not input, the image switching unit 110 sets the video data output by the video decoding unit 109 as display video data for display. The notification information will be described later. The image switching unit 110 outputs the display video data to the display device 15.

  The operation input unit 111 detects an operation result operated by the user, and outputs information indicating the detected operation result to the control unit 105. The information indicating the operation result includes, for example, information indicating the on or off state of the power supply of the receiving device 10, information indicating the channel of the broadcast wave, and the like. The operation input unit 111 is, for example, an operation button, a remote controller, an input interface that receives an operation signal from an electronic device such as a mobile terminal device, and the like.

(Notification process, reception process)
Next, the notification process and the reception process according to the present embodiment will be described.
FIG. 12 is a flowchart showing the procedure of the notification process and the reception process according to this embodiment. In the example shown in FIG. 12, an example in which a user selects a channel of a broadcast program via the broadcast satellite 41 will be described.

(Step S201) The user operates the operation input unit 111 (FIG. 9) to select a channel. The operation input unit 111 outputs information indicating the operated operation result to the control unit 105. Next, the control unit 105 generates channel information according to the information indicating the operation result output by the operation input unit 111, and outputs the generated channel information to the RF receiving unit 101. Subsequently, the RF receiving unit 101 receives a radio wave via the broadcasting satellite 41.

(Step S202) The resolution determination unit 1052 detects the MPT included in the configuration data.
(Step S203) The resolution determination unit 1052 extracts an asset group descriptor from the MPT asset group descriptor area included in the configuration data. Next, the resolution determination unit 1052 extracts the asset group descriptor having the same group ID from the extracted asset group descriptor.

(Step S204) The resolution determination unit 1052 extracts the MH-video component descriptor corresponding to the selected selection level 0 from the MPT descriptor area of MTP.
(Step S205) The resolution determination unit 1052 detects the resolution of the video data of the currently received broadcast program based on the video signal resolution of the extracted MH-video component descriptor. Subsequently, the resolution determination unit 1052 can display the video data corresponding to the extracted selection level on the display device 15 based on the detected resolution of the video data and the displayable resolution information output by the resolution acquisition unit 1051. It is determined whether or not there is. When the resolution determining unit 1052 determines that the video data corresponding to the extracted selection level can be displayed on the display device 15 (step S205; YES), the process proceeds to step S210, and the video corresponding to the extracted selection level. If it is determined that the data cannot be displayed on the display device 15 (step S205; NO), the process proceeds to step S206.

(Step S206) The notification information generation unit 1053 receives the currently received video based on the information indicating the resolution of the video data output by the resolution determination unit 1052 and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the data cannot be displayed on the display device 15 is generated. Subsequently, the notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. Next, the image switching unit 110 sets the notification data output by the resolution determination unit 1052 as display video data for display. Subsequently, the image switching unit 110 outputs the display video data to the display device 15. Next, the display device 15 displays an image of character information indicating that the currently received broadcast program cannot be displayed on the display surface D based on the display video data.

(Step S207) The resolution determination unit 1052 determines whether or not all selection levels of the same group ID have been confirmed. If the resolution determination unit 1052 determines that all selection levels of the same group ID have been confirmed (step S207; YES), the resolution determination unit 1052 advances the process to step S209, and determines that all resolution levels of the same group ID have not been confirmed. If so (step S207; NO), the process proceeds to step S208.
(Step S207) The resolution determination unit 1052 selects an asset group descriptor of another unidentified selection level. After selection, the resolution determination unit 1052 returns the process to step S205.

(Step S208) The resolution determination unit 1052 outputs, to the notification information generation unit 1053, information indicating the resolution of the video data of the currently received or received broadcast program and information indicating that the video data cannot be displayed on the display device 15. .. Subsequently, based on the information indicating the resolution of the video data output by the resolution determination unit 1052 and the information indicating that the video data cannot be displayed on the display device 15, the video data currently received or received is displayed on the display device 15. The notification data indicating that it is not possible is generated. Next, the notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. Subsequently, the image switching unit 110 sets the notification data as display video data for display, and outputs the display video data to the display device 15. Next, the display device 15 displays an image of character information indicating that there is no simulcast which can be displayed on the display device 15 corresponding to the currently received broadcast program, based on the display video data, as shown in FIG. Is displayed on the display surface D. After the notification, the control unit 105 ends the process.

(Step S208) When the currently received broadcast program can be displayed on the display device 15 in step S205, the received data selection unit 1054 determines to continue receiving the currently received broadcast. Alternatively, when the currently received broadcast program cannot be displayed on the display device 15, the reception data selection unit 1054 determines, based on the information indicating the distribution source or the information indicating the transmission source, output by the resolution determination unit 1052. Select the sender or distributor of the simulcast. When the resolution determination unit 1052 outputs two pieces of information indicating the transmission source and the information indicating the distribution source, the resolution determination unit 1052 compares the selection levels included in each information and selects the one with the higher resolution. , The selected transmission source or distribution source is determined as the broadcast to be reproduced. For example, when the selection level included in the information indicating the transmission source is 2 and the selection level included in the information indicating the distribution source is 1, the resolution determination unit 1052 corresponds to the broadcast with the smaller selection level value. Select the sender or distributor who is delivering the simul video. Subsequently, the resolution determination unit 1052 outputs it to the reception data selection unit 1054 as information indicating the determined transmission source or distribution source of the simulcast, and advances the processing to step S211.

(Step S211) The reception data selection unit 1054 generates a selection signal based on the information indicating the broadcast to be reproduced, which is determined in step S210. Subsequently, the reception data selection unit 1054 outputs the generated selection signal to the demodulation/cancellation unit 103. Next, the demodulation/cancellation unit 103 receives the multiplexed data based on the radio waves received from the broadcasting satellite 41, the multiplexed data based on the radio waves received from the radio tower 42, and the IP communication unit 102 according to the selection signal. Select one of the multiplexed data. Subsequently, the demodulation/demodulation unit 103 demodulates and deciphers the selected multiplexed data, and outputs the demultiplexed and deciphered multiplexed data to the demultiplexing unit 104. Next, the audio decoding unit 107 decodes the audio data separated by the separation unit 104 and reproduces the audio signal from the loud sound unit 108. The video decoding unit 109 decodes the video data separated by the separation unit 104 and displays the video signal based on the reproduced video data on the display device 15 from the image switching unit 110.
If there are a plurality of simultaneous videos corresponding to the selected level, the process of step S206 may be omitted.
This completes the notification process and the reception process.

  As described above, the receiving apparatus 10 according to the present embodiment receives the broadcast wave including the program data and the configuration data including the information about the program (for example, the RF receiving unit 101) and the receiving unit. A resolution determination unit 1052 that determines whether the resolution of the video data included in the program data is a resolution that can be displayed on the display device based on the configuration data included in the program data and the information indicating the resolution of the video. And a notification information generation unit 1053 for notifying information indicating that the resolution of the video data cannot be displayed on the display device when the resolution determination unit determines that the resolution of the video data cannot be displayed on the display device.

  With this configuration, the receiving device 10 of the present embodiment cannot display the received program on the display device 15 even if the resolution of the received video data is higher than the resolution of the display device 15 connected to the receiving device. Can be notified. Accordingly, the user can know that the program selected by operating the operation input unit 111 is a program that cannot be displayed on the display device 15. As a result, the receiving apparatus 10 of the present embodiment can facilitate the use of ultra-high resolution television broadcasting.

  In addition, the receiving device 10 of the present embodiment further includes a resolution acquisition unit 1051 that acquires information indicating the resolution of a video that can be displayed by the display device 15 from the display device, and the resolution determination unit 1052 includes a reception unit (for example, RF. The resolution of the video data included in the program data based on the configuration data included in the program data received by the receiving unit 101) and the information indicating the resolution of the video that can be displayed by the display device, which is acquired by the resolution acquiring unit. May be determined by the display device.

  In addition, the receiving device 10 of the present embodiment further includes a resolution acquisition unit 1051 that acquires information indicating the resolution of a video image that can be displayed by the display device 15 from the display device, and the resolution determination unit 1052 is received by the receiving unit. Whether the resolution of the video data included in the program data can be displayed on the display device based on the configuration data included in the program data and the information indicating the resolution of the video that the display device can display that is acquired by the resolution acquisition unit It may be determined whether or not.

  Further, in the receiving device 10A of the present embodiment, the resolution determining unit 1052 extracts the resolution of the currently broadcasted broadcast program included in the configuration data, and the resolution of the extracted currently broadcasted broadcast program is the display device. When 15 is higher than the displayable video resolution, it is determined that the resolution of the video data included in the currently broadcast program data is not displayable on the display device, and the notification information generation unit 1053 determines that the resolution determination unit Information indicating that the currently broadcast program cannot be displayed on the display device is notified based on the determined result.

  With this configuration, the receiving device 10 according to the present exemplary embodiment can display the current program being received by the display device 15 even if the resolution of the received video data is higher than the resolution of the display device connected to the receiving device. It can be informed that it cannot be displayed. This allows the user to know that the current program selected by operating the operation input unit 111 is a program that cannot be displayed on the display device 15. As a result, the receiving apparatus 10 of the present embodiment can facilitate the use of ultra-high resolution television broadcasting.

  With this configuration, in the receiving device 10 of the present embodiment, the receiving device 10 and the display device 15 are connected by a cable or the like, and the broadcast program of the channel selected by the user cannot be displayed on the display device 15. However, the display device 15 can be caused to display video data of a resolution that can be displayed by the display device 15.

  In addition, in the receiving device 10 of the present embodiment, a communication unit (for example, the IP communication unit 102) that receives program data and configuration data by communicating with another device different from the transmitting device 20 that transmits a broadcast wave, and a resolution determination unit. According to information indicating a transmission source that is a transmission device or a distribution source that is another device that broadcasts the program data that can be displayed on the display device output by 1052, program data is configured from the transmission source or the distribution source. And a reception data selection unit 1054 that controls to receive or receive data, and the resolution determination unit displays information indicating that the broadcast program currently broadcast by the notification information generation unit 1053 cannot be displayed on the display device 15. After being notified, the same program including the video data that can be displayed on the display device can be received by the receiving unit based on the configuration data and the information indicating the resolution of the video that the display device can display. It is determined whether or not the program data can be received by the broadcast wave or the communication unit, and if the same program including the video data that can be displayed on the display device is in the program data that can be received by another broadcast wave or the communication unit, the display device can Information indicating the sender or distributor of the program data that can be displayed may be output to the reception data selection unit.

  With this configuration, when the resolution of the received video data is higher than the resolution of the display device connected to the receiving device, the receiving device 10 according to the present embodiment automatically converts the broadcast image that can be displayed on the display device 15 that is being simulcast. Can be switched to. As a result, the receiving device 10 of the present embodiment allows the receiving device 10 to display the program that can be displayed on the display device 15 even if the program of the channel selected by the user has a resolution that cannot be displayed on the display device 15. It can be automatically received and displayed on the display device 15. As a result, even when the user selects a channel of a program that cannot be displayed on the display device 15, the user can watch the desired program without missing it.

  Further, in the receiving device 10 of the present embodiment, the resolution determining unit 1052 determines whether the video data included in the program data is included when there is no transmission source or distribution source broadcasting the program data that can be displayed on the display device 15. Information indicating that there is no program data whose resolution can be displayed on the display device is output to the notification information generation unit 1053, and the notification information generation unit determines that the resolution of the video data output by the resolution determination unit is the program data that can be displayed on the display device. Information indicating that there is no program data of a broadcast program that can be displayed on the display device is notified according to the information indicating that there is no such information.

In the receiving device and the display device according to the conventional technology, if the user selects a channel of a program that cannot be displayed on the display device and there is no simulcast that can be displayed on the display device, nothing is displayed on the display device. It was
With this configuration, the receiving apparatus 10 of the present embodiment can display a broadcast on the display device when the user selects a channel of a program that cannot be displayed on the display device and when there is no simulcast that can be displayed on the display device. Information indicating that there is no program data of the program can be notified. This allows the user to know that the selected program cannot be viewed on the display device 15. Then, the user can switch the channel to another program based on this notification. As a result, the receiving apparatus 10 of the present embodiment can facilitate the use of ultra-high resolution television broadcasting.

<Second Embodiment>
Next, a second embodiment of the present invention will be described with reference to the drawings.
The transmitting device 20, the server device 30, the broadcasting satellite 41, the radio tower 42, and the network 43 are the same as those in the broadcasting system 1 of the first embodiment.

(Data structure of MH-event information table (MH-EIT))
Next, an example of the data structure (MH-Event_Information_Table()) of the MH-event information table will be described.
FIG. 13 is a diagram showing an example of the data structure of the MH-event information table. As illustrated in FIG. 13, in the MH-event information table, a table identifier (table_id), a section syntax instruction (section_syntax_indicator), a section length (section_length), a service identification (service_id), a version number (version_number), and a current next instruction (current next instruction). current_next_indicator), section number (section_number), final section number (last_section_number), TLV stream identification (tlv_stream_id), original network identification (original_event_identity_event), segment final section number (segment_event), segment_section_number (last_section_number), segment_section_section_number (last_section_number), segment_section_section_section_section_number (last_section_number), segment_section_section (section_number), segment_section_section (section_number), segment_section_section (section_number), segment_section_section (section_number), segment_section_section_section (section_number), section_section_section_section_section (section_number), section_section_section_section_section (section_number)) , Start time (start_time), duration (duration), progress state (running_status), scramble (free_CA_mode), descriptor loop length (descriptors_loop_length), CRC (CRC_32).
It should be noted that the MH-event information table describes the information about the currently broadcast program for the channel being received and the information about the program to be broadcast next.

  When providing simulcast, the configuration information generation unit 212 describes information on simulcast for the currently received broadcast program in the descriptor area (descriptor()) following the descriptor loop length for each simulcast. Here, the information about the simulcast is information indicating a transmission network in which the simulcast is transmitted or distributed, information indicating a frequency at which the simulcast is transmitted (or information indicating a broadcasting satellite and a channel), and simulcast. The information includes the information indicating the distributed network 43 and the vertical resolution of the video signal being simulcast.

  In FIG. 13, the table identifier describes information for identifying each table. 1 is always described in the section syntax instruction. The section length describes information that defines the number of bytes of the section immediately after the section length field to the end of the section including CRC (Cyclic Redundancy Check). The service identification describes information that serves as a label for identifying this service from other services in the TLV stream. In the version number, the version number of the sub table is described. The current next instruction describes information indicating that the sub-table is the current sub-table, or information indicating that the sub-table to be sent is not applied yet and is used as the next sub-table. Information indicating the section number is described in the section number. The TLV stream identification describes information that serves as a label for identifying this TLV stream indicated by the EIT from other multiplexes in the distribution system. The original network identification describes information that acts as a label that defines the network identification of the original distribution system. The segment last section number describes information that defines the number of the last section of this segment of the sub table. The final table identification describes information on the final table used. Information indicating the identification number of the described event is described in the event identification. The start time describes information indicating the start time of the event, that is, the start time of the broadcast program, in Japan Standard Time (JST) and the modified Julian date. The duration describes the duration of the event, that is, the broadcast time length of the broadcast program in hours, minutes, and seconds. The progress status describes information indicating the status of the event. The scramble describes information indicating that all component streams in the event are not scrambled, or information indicating that access to one or more streams is controlled by a CA (Conditional Access) system. To be done. The descriptor loop length describes information indicating the total byte length of the subsequent descriptor. The CRC has ITU-T Recommendation H.264. The information according to 222.0 is described.

(Structure of receiving device)
Next, the configuration of the receiver 10A will be described.
FIG. 14 is a block diagram showing the configuration of the receiving device 10A according to the present embodiment. The reception device 10A includes an RF reception unit 101, an IP communication unit 102, a demodulation/cancellation unit 103, a separation unit 104, a control unit 105A, a storage unit 106, a voice decoding unit 107, a loud sound unit 108, a video decoding unit 109, and an image switching unit. 110 and an operation input unit 111. In addition, the control unit 105A includes a resolution acquisition unit 1051, a resolution determination unit 1052A, a notification information generation unit 1053, and a reception data selection unit 1054A.
The functional units having the same functions as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

  Channel information indicating a broadcast channel band corresponding to the broadcast channel is input to the RF reception unit 101 from the control unit 105A. The RF receiving unit 101 receives the radio wave of the multiplexed data transmitted by the broadcasting satellite 41 or the radio tower 42, and selects the radio wave of the broadcast channel band corresponding to the channel information from the received radio waves of the multiplexed data. An antenna (not shown) of the RF receiver 101 converts radio waves in the selected broadcast channel band into electric signals. The RF receiving unit 101 outputs the multiplexed data converted into an electric signal to the demodulation/demodulation unit 103.

  Communication instruction information received from the control unit 105A is input to the IP communication unit 102. The communication instruction information includes an IP address. The IP communication unit 102 receives the multiplexed data distributed by the server device 30 via the network 43 according to the communication instruction information, and outputs the received multiplexed data to the demodulation/demodulation unit 103.

  The demodulation/cancellation unit 103 receives the selection signal output from the reception data selection unit 1054A of the control unit 105A. The demodulation/cancellation unit 103 receives the multiplexed data based on the radio waves received from the broadcasting satellite 41, the multiplexed data based on the radio waves received from the radio tower 42, and the multiplexed data received by the IP communication unit 102 according to the selection signal. Select one of them. When the selected multiplexed data is modulated, the demodulation/cancellation unit 103 demodulates the modulated multiplexed data. The demodulation/demodulation unit 103 deciphers the selected multiplexed data by an encryption method (for example, AES) corresponding to the method used by the encryption unit 214 of the transmission device 20, and demultiplexes the multiplexed data. The data is output to the separation unit 104.

  The control unit 105A controls various operations of the receiving device 10A. Information indicating the operation result output by the operation input unit 111, configuration data output by the separation unit 104, and displayable resolution information output by the display device 15 are input to the control unit 105A. The control unit 105A generates a selection signal based on the information indicating the operation result and the configuration data, and outputs the generated selection signal to the RF reception unit 101 and the IP communication unit 102.

The resolution acquisition unit 1051 acquires the displayable resolution information output by the display device 15, and outputs the acquired displayable resolution information to the resolution determination unit 1052A.
The resolution determining unit 1052A extracts the MH-video component descriptor from the MPT descriptor area of the MPT included in the configuration data. The resolution determination unit 1052A detects the resolution of the video data of the currently received broadcast program based on the video signal resolution of the extracted MH-video component descriptor. The resolution determination unit 1052A determines whether or not the video data can be displayed on the display device 15, based on the detected resolution of the video data and the displayable resolution information output by the resolution acquisition unit 1051.
When the video data can be displayed on the display device 15, the resolution determination unit 1052A outputs information indicating that the multiplexed data is to be received or to be received to the received data selection unit 1054A.

  When the video data is not displayable on the display device 15, the resolution determination unit 1052A outputs information indicating the resolution of the video data and information indicating that the video data cannot be displayed on the display device 15 to the notification information generation unit 1053. .. After outputting to the notification information generation unit 1053, the resolution determination unit 1052A, when the video data is not displayable on the display device 15, the information described in the descriptor area (descriptor()) of the MH-event information table, Based on the displayable resolution information, a simulcast (hereinafter, also referred to as simulcast) with video data having a resolution that can be displayed by the display device 15 is transmitted through a reception network and a distribution network different from the currently received reception network. Search whether it is done.

When there is a simul video, the resolution determination unit 1052A extracts the broadcast channel band or the IP address of the distribution source according to the broadcast channel in which the multiplexed data including the video data of the resolution that can be displayed on the display device 15 is transmitted. To do. The resolution determination unit 1052A associates the extracted reception network, the broadcast channel, and the information indicating the resolution with each other, and outputs the associated information to the notification information generation unit 1053 as information indicating the transmission source. Further, the resolution determination unit 1052A associates the extracted communication network, the IP address, and the information indicating the resolution with each other, and outputs the associated information to the notification information generation unit 1053 as information indicating the transmission source. The resolution determination unit 1052A outputs information indicating the transmission source of the simulcast to the reception data selection unit 1054A based on the extracted result.
When there is no simul video in the reception network and communication network different from the currently received reception network and communication network, the resolution determination unit 1052A outputs information indicating that there is no simul video to the reception data selection unit 1054A.

  The notification information generation unit 1053 displays the currently received or received video data based on the information indicating the resolution of the video data output by the resolution determination unit 1052A and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the device 15 cannot display is generated. The notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. The notification information is an image, for example, image information including character information "This display device does not support 8K broadcasting" as in the example shown in FIG.

  Further, the notification information generation unit 1053 generates notification data indicating that there is no simulcast that can be displayed on the display device 15, based on the information indicating that there is no simul video output by the resolution determination unit 1052A. The notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. The notification information is an image, for example, image information including text information "This display device does not support 8K broadcasting" as in the example shown in FIG.

  In the present embodiment, the example in which the notification information is the image information including the character information has been described, but the present invention is not limited to this. The notification information may be voice information. In this case, the notification information generation unit 1053 may convert, for example, the character information “There is no simulcast that can be displayed on this display device” into an audio signal, and output the converted audio signal to the loud sound unit 108. .. The notification information generation unit 1053 may perform the notification using at least one of the character information and the voice signal.

The reception data selection unit 1054A generates a selection signal based on the information indicating the transmission source or the distribution source of the simulcast output by the resolution determination unit 1052A. The selection signal is a signal for selecting the multiplexed data received or received by any broadcasting network or communication network. When the selection signal is a signal for selecting a broadcast network, the control unit 105A generates channel information and outputs the generated channel information to the RF receiving unit 101.
When there are a plurality of simulcasts that can be displayed on the display device 15, the reception data selection unit 1054A selects the highest quality simulcast that can be displayed on the display device 15, and indicates the source of the selected simulcast. , Or a selection signal is generated based on information indicating a distribution source.

  For example, if the channel selected by the user operating the operation input unit 111 is the multiplexed data received from the broadcasting satellite 41 and the resolution of the video data included in the multiplexed data is 8K broadcast, the control unit 105A determines The multiplexed data is received via the radio tower 42 selected by the resolution determination unit 1052. At this time, the control unit 105A outputs, to the RF reception unit 101, channel information corresponding to the channel transmitting the simulcast in order to select simulcast from the radio waves received from the radio tower 42.

  When the notification data output by the notification information generation unit 1053 of the control unit 105A is input, the image switching unit 110 sets the notification data as display video data for display. Further, when the notification data output by the notification information generation unit 1053 of the control unit 105A is not input, the image switching unit 110 sets the video data output by the video decoding unit 109 as display video data for display. The notification information will be described later. The image switching unit 110 outputs the display video data to the display device 15.

  The operation input unit 111 detects the operation result operated by the user, and outputs information indicating the detected operation result to the control unit 105A. The information indicating the operation result includes, for example, information indicating the on or off state of the power supply of the receiving device 10, information indicating the channel of the broadcast wave, and the like. The operation input unit 111 is, for example, an operation button, a remote controller, an input interface that receives an operation signal from an electronic device such as a mobile terminal device, and the like.

(Notification process, reception process)
Next, the notification process and the reception process according to the present embodiment will be described.
FIG. 15 is a flowchart showing the procedure of the notification process and the reception process according to this embodiment. In the example shown in FIG. 15, an example in which a user selects a channel of a broadcast program via the broadcast satellite 41 will be described. Further, in the example shown in FIG. 15, an example in which the priority of the broadcast network is higher than the priority of the communication network when searching for simulcast will be described.

(Step S1) The user operates the operation input unit 111 (FIG. 9) to select a channel. The operation input unit 111 outputs information indicating the result of the operated operation to the control unit 105A. Next, the control unit 105A generates channel information according to the information indicating the operation result output by the operation input unit 111, and outputs the generated channel information to the RF receiving unit 101. Subsequently, the RF receiving unit 101 receives a radio wave via the broadcasting satellite 41.

(Step S2) The resolution determining unit 1052A detects the MH-video component descriptor from the MPT descriptor area of the MPT included in the configuration data.

(Step S3) The next resolution determination unit 1052A detects the resolution of the video data of the currently received broadcast program based on the video signal resolution of the extracted MH-video component descriptor. Next, the resolution determination unit 1052A determines whether the video data can be displayed on the display device 15 based on the detected resolution of the video data and the displayable resolution information. When the resolution determining unit 1052A determines that the video data can be displayed on the display device 15 (step S3; YES), the process proceeds to step S10. When the resolution determination unit 1052A determines that the video data cannot be displayed on the display device 15 (step S3; NO), the process proceeds to step S4.

(Step S4) The notification information generation unit 1053 receives the currently received video based on the information indicating the resolution of the video data output by the resolution determination unit 1052A and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the data cannot be displayed on the display device 15 is generated. Subsequently, the notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. Next, the image switching unit 110 sets the notification data output by the resolution determination unit 1052A as display video data for display. Subsequently, the image switching unit 110 outputs the display video data to the display device 15. Next, the display device 15 displays an image of character information indicating that the currently received broadcast program cannot be displayed on the display surface D based on the display video data.

(Step S5) After notification, the resolution determination unit 1052A can display on the display device 15 based on the information described in the descriptor area (descriptor()) of the MH-event information table and the displayable resolution information. It is searched whether simulcast of different resolution is transmitted through a receiving network different from the receiving network currently being received. Subsequently, the resolution determination unit 1052A determines whether or not the simul video having a resolution that can be displayed on the display device 15 is transmitted through a receiving network different from the currently receiving receiving network. If the resolution determining unit 1052A determines that the receiving network different from the currently receiving receiving network has the simul video, the resolution determining unit 1052A associates the receiving network with the broadcast channel and the information indicating the resolution, respectively, and transmits the associated information. The information indicating the origin is output to the notification information generation unit 1053.

(Step S6) Based on the information described in the descriptor area (descriptor()) of the MH-event information table and the displayable resolution information, the resolution determination unit 1052A determines the resolution that can be displayed on the display device 15. It is searched whether the simulcast is distributed by a communication network different from the currently received reception network. Subsequently, the resolution determination unit 1052A determines whether or not simul video having a resolution that can be displayed on the display device 15 is transmitted through the communication network. When the resolution determining unit 1052A determines that the communication network includes simul video, the resolution determining unit 1052A associates the communication network, the broadcast channel, and the information indicating the resolution with each other, and the associated information is used as the information indicating the distribution source. Output to.

(Step S7) The resolution determination unit 1052A determines, based on the results of the processing of steps S5 and S6, a reception network or communication different from the reception network currently receiving the simul video of the resolution displayable on the display device 15. Determine whether it is distributed on the network. If the resolution determining unit 1052A determines that the simul video is present in the receiving network or the communication network different from the currently receiving receiving network (step S7; YES), the process proceeds to step S9. When the resolution determination unit 1052A determines that there is no simultaneous image in the communication network different from the currently received reception network (step S8; NO), the process proceeds to step S8.

(Step S8) The resolution determination unit 1052A outputs information indicating the resolution of the video data and information indicating that the video data cannot be displayed on the display device 15 to the notification information generation unit 1053. Subsequently, based on the information indicating the resolution of the video data output by the resolution determination unit 1052A and the information indicating that the video data cannot be displayed on the display device 15, the video data currently received or received is displayed on the display device 15. The notification data indicating that it is not possible is generated. Next, the notification information generation unit 1053 outputs the generated notification data to the image switching unit 110. Subsequently, the image switching unit 110 sets the notification data as display video data for display, and outputs the display video data to the display device 15. Next, the display device 15 displays an image of character information indicating that there is no simulcast which can be displayed on the display device 15 corresponding to the currently received broadcast program, based on the display video data, as shown in FIG. Is displayed on the display surface D. After the notification, the control unit 105A ends the process.

(Step S9) If the currently received broadcast program can be displayed on the display device 15 in step S3, the received data selection unit 1054A determines to continue receiving the currently received broadcast. Alternatively, when the currently received broadcast program is not displayable on the display device 15, the reception data selection unit 1054A determines, based on the information indicating the distribution source or the information indicating the transmission source, output by the resolution determination unit 1052A. Select the sender or distributor of the simulcast. When the resolution determination unit 1052A outputs two pieces of information indicating the transmission source and the information indicating the distribution source, the reception data selection unit 1054A compares the resolutions included in each information and selects the one with the higher resolution. , The selected transmission source or distribution source is determined as the broadcast to be reproduced. For example, when the resolution included in the information indicating the transmission source is a resolution corresponding to 2K broadcasting and the resolution included in the information indicating the distribution source is a resolution corresponding to 4K broadcasting, the reception data selection unit 1054A determines that the 4K broadcasting is performed. Select the distribution source that distributes the simul video corresponding to. Subsequently, the reception data selection unit 1054A advances the processing to step S10.

(Step S10) The reception data selection unit 1054A generates a selection signal based on the information indicating the broadcast to be reproduced, which is determined in step S9. Subsequently, the reception data selection unit 1054A outputs the generated selection signal to the demodulation/cancellation unit 103. Next, the demodulation/cancellation unit 103 receives the multiplexed data based on the radio waves received from the broadcasting satellite 41, the multiplexed data based on the radio waves received from the radio tower 42, and the IP communication unit 102 according to the selection signal. Select one of the multiplexed data. Subsequently, the demodulation/demodulation unit 103 demodulates and deciphers the selected multiplexed data, and outputs the demultiplexed and deciphered multiplexed data to the demultiplexing unit 104. Next, the audio decoding unit 107 decodes the audio data separated by the separation unit 104 and reproduces the audio signal from the loud sound unit 108. The video decoding unit 109 decodes the video data separated by the separation unit 104 and causes the image switching unit 110 to display a video signal based on the reproduced video data on the display device 15.
This completes the notification process and the reception process.

  In the example shown in FIG. 15, in step S5, a simul video that can be displayed on the display device 15 in another broadcast network is searched, and in step S6, a simul video that can be displayed on the display device 15 in a communication network is searched. The example has been described, but the present invention is not limited to this. In step S5, after the notification, the resolution determination unit 1052A can display on the display device 15 based on the information described in the descriptor area (descriptor()) of the MH-event information table and the displayable resolution information. It may be possible to search whether simulcast having different resolutions is transmitted or distributed through a receiving network and a communication network different from the currently receiving receiving network. Then, the resolution determination unit 1052A may store the retrieved result in the storage unit 106 as in steps S5 and S6.

  Further, in step S9, if there are a plurality of simulcasts having the same resolution that can be displayed on the display device 15, the reception data selection unit 1054A has information indicating the transmission source of the simulcast according to a predetermined priority order. Alternatively, information indicating the distribution source may be selected.

  As described above, in the reception device 10A of the present embodiment, the reception data selection unit 1054A transmits the program data that can be displayed on the display device 15 from the transmission source (for example, the broadcasting satellite 41, the radio tower 42) or When there are a plurality of distribution sources (for example, the server device 30 and the network 43), the transmission source or the distribution source is selected based on a predetermined priority order, and the transmission is performed according to the information indicating the selected transmission source or the distribution source. Controls to receive or receive the program data and the configuration data from the source or the distributor.

  With this configuration, the receiving device 10 of the present embodiment displays on the display device 15 when the user selects a channel of a program that cannot be displayed on the display device and when there are a plurality of simultaneous broadcasts that can be displayed on the display device. The display device 15 can automatically receive the displayable program and display it on the display device 15. As a result, even if the user selects a channel of a program that cannot be displayed on the display device 15, the user can watch the desired program without missing it.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to the drawings.
The transmitting device 20, the server device 30, the broadcasting satellite 41, the radio tower 42, and the network 43 are the same as those in the broadcasting system 1 of the first embodiment.
Next, the configuration of the receiving device 10 will be described.
FIG. 16 is a block diagram showing the configuration of the receiving device 10B according to this embodiment. The receiving device 10 includes an RF receiving unit 101, an IP communication unit 102, a demodulation/cancellation unit 103, a separation unit 104, a control unit 105B, a storage unit 106, a voice decoding unit 107, a loud sound unit 108, a video decoding unit 109, and an operation input unit. 111 and an image composition unit 112. The control unit 105B includes a resolution acquisition unit 1051, a resolution determination unit 1052B, a notification information generation unit 1053B, and a reception data selection unit 1054B.

As described in the second embodiment, the MH-event information table describes the information about the currently broadcast program for the channel being received and the information about the program to be broadcast next.
The control unit 105B controls various operations of the receiving device 10A. Information indicating the operation result output by the operation input unit 111, configuration data output by the separation unit 104, and displayable resolution information output by the display device 15 are input to the control unit 105B. The control unit 105B generates a selection signal based on the information indicating the operation result and the configuration data, and outputs the generated selection signal to the RF reception unit 101 and the IP communication unit 102.

The resolution determination unit 1052B extracts the MH-video component descriptor from the MPT descriptor area of the MPT included in the configuration data. The resolution determination unit 1052B detects the resolution of the video data of the next broadcast program based on the video signal resolution of the extracted MH-video component descriptor. The resolution determining unit 1052B determines whether the video data can be displayed on the display device 15 based on the detected resolution of the video data and the displayable resolution information.
When the video data of the next broadcast program can be displayed on the display device 15, the resolution determination unit 1052B outputs information indicating that the reception or the reception of the multiplexed data is continued to the reception data selection unit 1054B. If the video data of the next broadcast program cannot be displayed on the display device 15, the resolution determination unit 1052B indicates that the resolution of the video data of the next broadcast program and the video data cannot be displayed on the display device 15. The information is output to the notification information generation unit 1053B.

  The notification information generation unit 1053B displays the currently received or received video data based on the information indicating the resolution of the video data output by the resolution determination unit 1052B and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the device 15 cannot display is generated. The notification information generation unit 1053B outputs the generated notification data to the image synthesis unit 112. The notification information is an image, and is image information including text information such as "The next program to be broadcast is 8K broadcast. This display device does not support 8K broadcast", as in the example shown in FIG. is there. FIG. 17 is a diagram showing an example of an image of the notification information displayed on the display device 15 according to the present embodiment. The example shown in FIG. 17 is an example in which the display device 15 can display video data of resolutions of 2K broadcast and 4K broadcast, but cannot display 8K broadcast. In the example shown in FIG. 17, the image information including the text information "The next program to be broadcast is 8K broadcast. This display device does not support 8K broadcast" on the display surface D of the display device 15. This is an example in which g121 is displayed.

  The reception data selection unit 1054B generates a selection signal based on the information indicating the transmission source or the distribution source of the simulcast output by the resolution determination unit 1052B. The selection signal is a signal for selecting the multiplexed data received or received by any broadcasting network or communication network. When the selection signal is a signal for selecting a broadcast network, the control unit 105B generates channel information and outputs the generated channel information to the RF receiving unit 101.

  When the notification data output by the notification information generation unit 1053B is input, the image combining unit 112 combines the notification data with the video data output by the video decoding unit 109, and the combined video data is display video data for display. And The image composition unit 112 outputs the display video data to the display device 15.

(Notification process, reception process)
Next, the notification process and the reception process according to the present embodiment will be described.
FIG. 18 is a flowchart showing the procedure of the notification process and the reception process according to this embodiment. In the example shown in FIG. 18, an example in which a user selects a channel of a broadcast program via the broadcast satellite 41 will be described.

(Step S101) The user operates the operation input unit 111 to select a channel. The operation input unit 111 outputs information indicating the result of the operated operation to the control unit 105B. Next, the control unit 105B generates channel information according to the information indicating the operation result output by the operation input unit 111, and outputs the generated channel information to the RF receiving unit 101. Subsequently, the RF receiving unit 101 receives a radio wave via the broadcasting satellite 41.

(Step S102) The resolution determination unit 1052B extracts the MH-video component descriptor from the MPT descriptor area of the MPT included in the configuration data. Next, the resolution determination unit 1052B detects the resolution of the video data of the next broadcast program based on the video signal resolution of the extracted MH-video component descriptor.

(Step 103) The resolution determination unit 1052B determines whether the video data can be displayed on the display device 15 based on the detected resolution of the video data and the displayable resolution information. When the resolution determining unit 1052B determines that the video data can be displayed on the display device 15 (step S103; YES), the process ends. If the resolution determination unit 1052B determines that the video data cannot be displayed on the display device 15 (step S103; NO), the process proceeds to step S104.

(Step S104) The notification information generation unit 1053B receives or receives the video based on the information indicating the resolution of the video data output by the resolution determination unit 1052B and the information indicating that the video data cannot be displayed on the display device 15. The notification data indicating that the data cannot be displayed on the display device 15 is generated. Subsequently, the notification information generation unit 1053B outputs the generated notification data to the image synthesis unit 112. Next, when the notification data output by the notification information generation unit 1053B is input, the image combining unit 112 combines the notification data with the video data output by the video decoding unit 109, and the combined video data for display is displayed. Use as display video data. Next, the display device 15 displays an image of character information indicating that the currently received broadcast program cannot be displayed on the display surface D based on the display video data.
This completes the notification process and the reception process.

  Note that, also in the present embodiment, after notifying that the next program cannot be displayed on the display device 15 in step S104, it can be displayed on the display device 15 using the method described in the first embodiment or the second embodiment. You may make it search and receive the simulcast of the image data. In this case, the control unit 105B, after notifying that the next program cannot be displayed on the display device 15, searches for and receives the simulcast of the video data that can be displayed on the display device 15 before the next program starts. You may make it switch like this.

  As described above, in the reception device 10B of the present embodiment, the resolution determination unit 1052B extracts the resolution of the next broadcast program broadcast on the same channel included in the configuration data, and the extracted next broadcast. If the resolution of the broadcast program to be displayed is higher than the resolution of the video that the display device 15 can display, it is determined that the resolution of the video data included in the program data to be broadcast next cannot be displayed on the display device, and the notification information is displayed. The generation unit 1053B notifies the information indicating that the broadcast program to be broadcast next cannot be displayed on the display device, based on the result determined by the resolution determination unit.

  With this configuration, the receiving device 10B according to the present exemplary embodiment can perform the following even if the resolution of the video data that is broadcast next on the received channel is higher than the resolution of the display device 15 connected to the receiving device 10B. It is possible to inform that the program broadcasted on the display device 15 cannot be displayed on the display device 15. This allows the user to operate the operation input unit 111 to know that the program broadcast next to the currently selected program that is currently being viewed is a program that cannot be displayed on the display device 15. As a result, the receiving apparatus 10B of the present embodiment can facilitate the use of ultra-high resolution television broadcasting.

  Further, in the reception device 10B of the present embodiment, the resolution determination unit 1052B notifies the notification information generation unit 1053B of information indicating that the next broadcast program broadcast on the same channel cannot be displayed on the display device 15. The same program including the video data that can be displayed on the display device is received by another broadcast wave and the communication unit (for example, the IP communication unit 102) based on the configuration data and the information indicating the resolution of the video that the display device can display. If the same program including the video data that can be displayed on the display device is present in the program data that can be received by another broadcast wave or the communication unit, the program data that can be displayed on the display device is determined. Information indicating the broadcasting source or distribution source is output to the reception data selection unit, and the reception data selection unit can be displayed on the display device output by the resolution determination unit before the broadcast of the next broadcast program starts. The program data and the configuration data are controlled to be received or received from the transmission source or the distribution source according to the information indicating the transmission source or the distribution source broadcasting the program data.

  With this configuration, the receiving device 10B of the present embodiment automatically receives a program that can be displayed on the display device 15 when the program to be broadcast next on the channel selected by the user cannot be displayed on the display device. It can be received and displayed on the display device 15. As a result, even if the user selects a channel of a program that cannot be displayed on the display device 15, the user can watch the desired program without missing it.

  In addition, in the first embodiment, the second embodiment, and the third embodiment, an example of the transmission from the broadcast satellite 41 or the radio tower 42 and the distribution via the server device 30 and the network 43 has been described. Not limited to For example, the broadcast network of multiplexed data may be a cable television broadcast network. In this case, the cable television broadcasting network and the receiving device 10 are connected by a coaxial cable or an optical cable. Then, the receiving device 10 may select the multiplexed data corresponding to the channel selected by the user from the received multiplexed data. It should be noted that the storage unit 106 of the receiving device 10 stores the correspondence between the channels broadcast via the broadcasting satellite 41 and the radio tower 42 and the channels broadcast on the cable television broadcasting network. You can The control unit 105 (105A, 105B) extracts the channel broadcasting the simul video that can be displayed on the display device 15 based on the channel correspondence information stored in the storage unit 106, and broadcasts the extracted channel. May be received and displayed. That is, when the video data of the channel selected by the user cannot be displayed on the display device 15, the control unit 105 (105A, 105B) notifies the display device 15 and then simulcasts that can be displayed on another channel. You may make it search whether it is performed.

  Further, in the first embodiment, the second embodiment, and the third embodiment, the examples of 4K broadcasting and 8K broadcasting have been described as examples of ultra-high-resolution television broadcasting, but the present invention is not limited to this. For example, the resolution that can be displayed on the display device 15 may be a resolution corresponding to 8K broadcasting, and the resolution of broadcast video data may be 2K, 4K, 8K, 16K,. Even in this case, the receiving device 10 determines whether or not the resolution of the video data of the channel selected by the user can be displayed on the display device 15, informs when the resolution cannot be displayed, and allows the display after the notification. A simulcast including simul video may be searched and selected.

  In addition, the resolution of the video data included in the multiplexed data shown as an example in the first embodiment, the second embodiment, and the third embodiment, and the value of the resolution that can be displayed on the display device 15 are examples. Not limited to the value. The value of each resolution may be, for example, a value according to the standard adopted by each country.

  Further, in the first embodiment, the second embodiment, and the third embodiment, the example in which the resolution of the video data included in the multiplexed data received from the broadcasting satellite 41 is one kind has been described, but the present invention is not limited to this. Absent. As described using the roadmap announced by the Ministry of Internal Affairs and Communications, in the experimental broadcasting, 4K and 8K broadcasting from the broadcasting satellite 41 may be broadcast on one channel by time division. In this way, when a plurality of types of resolutions are broadcast on one channel by time division, the control unit 105 (105A, 105B) is described in the descriptor area (descriptor()) of the MH-event information table. Video data having a resolution that can be displayed by the display device 15 may be extracted based on the information and the displayable resolution information, and an image may be displayed on the display device 15 based on the extracted video data. In this case, the control unit 105 (105A, 105B) includes an 8K broadcast in the received broadcast, but displays an image of character information indicating that the included 8K broadcast cannot be displayed on the display device 15 in the 4K broadcast. The images may be superimposed and combined, and the combined image may be displayed on the display device 15.

In the above-described embodiment, the case where the media transport method based on MMT (MPEG Media Transport) defined by MPEG-H is used as a transmission method for transmitting various data, but other transmission methods, For example, MPEG-2
A method defined by Systems may be used. Also, as the data format, encryption method, and encoding method related to transmission, the format or method defined by the transmission method may be used.

  Moreover, you may make it implement|achieve a part of receiving device 10, 10A, and 10B in embodiment mentioned above by a computer. In that case, the program for realizing the control function may be recorded in a computer-readable recording medium, and the program recorded in the recording medium may be read by a computer system and executed. The "computer system" referred to here is a computer system built in the recognition data transmission device and includes an OS and hardware such as peripheral devices. Further, the “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in a computer system. Further, "computer-readable recording medium" means a program that dynamically holds a program for a short time, such as a communication line when transmitting the program through a network such as the Internet or a communication line such as a telephone line. In such a case, a volatile memory inside the computer system that serves as a server or a client, which holds a program for a certain time, may be included. Further, the program may be for realizing a part of the functions described above, or may be a program for realizing the functions described above in combination with a program already recorded in the computer system.

1... Broadcasting system, 10, 10A, 10B... Receiving device, 15... Display device, 20... Transmitting device, 30... Server device, 41... Broadcast satellite, 42... Radio tower, 43... Network, 101... RF receiving unit, 102 ... IP communication unit, 103... Demodulation/cancellation unit, 104... Separation unit, 105, 105A... Control unit, 106... Storage unit, 107... Audio decoding unit, 108... Loud sound unit, 109... Video decoding unit, 110... Image switching 111, operation input unit, 112 image synthesis unit, 1051 resolution acquisition unit, 1052, 1052A, 1052B... resolution determination unit, 1053, 1053B... notification information generation unit, 1054, 1054A, 1054B... received data selection unit, 211... Program data generation unit, 212... Configuration information generation unit, 213... Multiplexing unit, 214... Encryption unit, 215... RF transmission unit, 216... IP communication unit

Claims (12)

A configuration that includes program data including a plurality of video data of different resolutions which are broadcast by time division on one channel, and information about a program of the program data, the information indicating a video resolution of each of the plurality of video data. A receiver for receiving a broadcast wave including data and
Based on the information indicating the resolution of the image by one of the plurality of image data received by the receiving unit and the information indicating the resolution of the image that can be displayed by the display device, A resolution determination unit that determines whether or not one of the resolutions is a resolution that can be displayed by the display device,
A notification information generation unit for notifying information indicating that the resolution of the video data cannot be displayed on the display device when the resolution determination unit determines that the resolution of the video data cannot be displayed on the display device,
Equipped with
The resolution discriminating unit notifies the information indicating that the resolution of the video data cannot be displayed on the display device, and then displays the resolution of another one of the plurality of video data. A receiving device that determines whether the resolution can be displayed by the device. The resolution determination unit,
The resolution of the currently broadcasted broadcast program included in the configuration data is extracted, and if the resolution of the extracted currently broadcasted broadcast program is higher than the resolution of the video that can be displayed by the display device, the current broadcast is performed. It is determined that the resolution of the video data included in the program data is not displayable on the display device,
The notification information generation unit,
The receiving device according to claim 1, wherein information indicating that the currently broadcast program cannot be displayed on the display device is notified based on the result of the determination by the resolution determining unit. A communication unit that receives the program data and the configuration data by communicating with another device different from the transmission device that transmits the broadcast wave;
According to information indicating the transmission source that is the transmission device or the distribution source that is the other device, which broadcasts the program data that can be displayed on the display device and that is output by the resolution determination unit, the transmission source or A reception data selection unit that controls to receive or receive the program data and the configuration data from the distributor,
The resolution determination unit,
After the notification indicating that the broadcast program currently being broadcast cannot be displayed on the display device is notified by the notification information generation unit, the configuration data and the information indicating the resolution of the video that can be displayed by the display device are displayed. On the basis of the above, it is determined whether the same program including the video data that can be displayed on the display device is in another broadcast wave that can be received by the receiving unit or the program data that can be received by the communication unit, and The source broadcasting the program data displayable on the display device when the same program including the video data displayable on the display device is present in the other broadcast wave or the program data received by the communication unit. Alternatively, the receiving device according to claim 1 or 2, which outputs information indicating the distribution source to the reception data selection unit. The resolution determination unit,
If there is no transmission source or distribution source broadcasting the program data that can be displayed on the display device, there is no program data that can be displayed on the display device in the resolution of the video data included in the program data. Is output to the notification information generation unit,
The notification information generation unit,
Depending on the information indicating that the resolution of the image data is not program data that can be displayed on said display device said resolution discrimination section outputs the information indicating that there is no program data of a broadcast program that can be displayed on the display device The receiving device according to claim 3, which makes a notification. The reception data selection unit,
When there are a plurality of transmission sources or distribution sources broadcasting the program data that can be displayed on the display device, the transmission source or the distribution source is selected based on a predetermined priority order, and the selected one is selected. The receiving device according to claim 3, wherein the program data and the configuration data are controlled to be received or received from the transmission source or the distribution source according to information indicating the transmission source or the distribution source. The resolution determination unit,
The resolution of the next broadcast program broadcasted on the same channel included in the configuration data is extracted, and the extracted resolution of the next broadcast program is higher than the resolution of the video that can be displayed by the display device. If the resolution is high, it is determined that the resolution of the video data included in the next broadcast program data is not displayable on the display device,
The notification information generation unit,
The reception according to any one of claims 1 to 5, which notifies information indicating that the next broadcast program cannot be displayed on the display device, based on the result of the determination by the resolution determination unit. apparatus. The resolution determination unit,
Information indicating the resolution of the configuration data and the video that can be displayed by the display device after the information indicating that the next broadcast program broadcast on the same channel cannot be displayed on the display device is notified by the notification information generation unit. Based on the above, it is determined whether or not the same program including the video data that can be displayed on the display device is in the other broadcast wave or the program data that can be received by the communication unit, and can be displayed on the display device. When the same program including video data is in the other broadcast wave or the program data that can be received by the communication unit, it indicates the transmission source or the distribution source broadcasting the program data that can be displayed on the display device. Output information to the received data selection unit,
The reception data selection unit,
Before the broadcast of the next broadcast program is started, the transmission is performed according to information indicating the transmission source or the distribution source that is broadcasting the program data that can be displayed on the display device, which is output by the resolution determination unit. The receiving apparatus according to claim 3 or 4, wherein the program data and the configuration data are received or controlled to be received from a source or the distribution source. Further comprising a resolution acquisition unit that acquires from the display device information indicating the resolution of an image that the display device can display,
The resolution determination unit,
Included in the program data based on the configuration data included in the program data received by the receiving unit and information indicating the resolution of the video that can be displayed by the display device, which is acquired by the resolution acquiring unit. The receiving device according to claim 1, wherein it is determined whether the resolution of the video data can be displayed on the display device. Further comprising a resolution acquisition unit that acquires from the display device information indicating the resolution of an image that the display device can display,
The resolution determination unit,
Based on the configuration data included in the program data received by the receiving unit or received by the communication unit, and information indicating the resolution of the video image displayable by the display device, which is acquired by the resolution acquiring unit, The reception according to claim 3, wherein it is determined whether or not the resolution of the video data included in the program data can be displayed on the display device, or claim 4 to claim 7, which refers to claim 3. apparatus. The configuration data includes selection level information,
The receiving device according to claim 1, wherein the resolution determination unit determines whether or not a selection level having a default value among the plurality of video data can be displayed first. The receiving unit is program data including a plurality of video data of different resolutions which are broadcast by time division on one channel, and information about a program of the program data, and indicates the resolution of the video by each of the plurality of video data. A reception procedure for receiving a broadcast wave including the configuration data including the information,
The resolution determining unit determines the plurality of video data based on the information indicating the video resolution of one of the video data received in the receiving procedure and the video resolution that can be displayed by the display device. A first resolution determining step of determining whether or not one of the image data of the above is a displayable resolution on the display device,
When the notification information generation unit determines that the resolution of the video data cannot be displayed on the display device by the first resolution determination procedure, information indicating that the resolution of the video data cannot be displayed on the display device is displayed. Notification information generation procedure for notification,
After notifying the information indicating that the resolution of the video data cannot be displayed on the display device by the notification information generation procedure, the resolution determination unit determines that the resolution of another one of the plurality of video data is the display device. A second resolution determination procedure for determining whether or not the resolution can be displayed by
Receiving method including. A configuration that includes program data including a plurality of video data of different resolutions which are broadcast by time division on one channel, and information about a program of the program data, the information indicating a video resolution of each of the plurality of video data. A reception procedure for receiving a broadcast wave including data and
Of the plurality of pieces of video data based on the information indicating the resolution of the video by one of the plurality of pieces of video data received by the receiving procedure and the information indicating the resolution of the video that can be displayed by the display device. A first resolution determining step of determining whether or not one of the resolutions is a displayable resolution on the display device,
A notification information generation procedure for notifying information indicating that the resolution of the video data cannot be displayed on the display device when it is determined by the first resolution determination procedure that the resolution of the video data cannot be displayed on the display device. When,
After notifying the information indicating that the resolution of the video data cannot be displayed on the display device by the notification information generation procedure, another one of the plurality of video data has a resolution that can be displayed on the display device. A second resolution determination procedure for determining whether or not there is;
A program that causes a computer to execute.

Images