JP6559542B2 - Receiving device, receiving method and program - Google Patents

Description

  The present invention relates to a receiving apparatus, a receiving method, and a program, and more particularly to a television broadcasting system.

  In next-generation television broadcasting services such as 4K and 8K Ultra High Definition Television (UHDTV), audio from multiple different playback formats and audio in multiple languages can be sent to a single program. A simul audio broadcast, which is a broadcasting service, is planned. In the simulcast, since the audio having different attributes such as the reproduction method and language is multiplexed for each program, the television receiving apparatus reproduces the audio signal decoded (decoded) according to the attributes.

  On the other hand, in digital television broadcasting, it has been studied to provide a dialog dedicated channel that enables volume control independent of other channels for some channels of multi-channel audio. Dialog audio is provided as a part of the program to the dialog dedicated channel. The dialog voice-compatible receiving device recognizes that dialog voice is provided, and enables volume adjustment for the dedicated channel for the dialog designated by the operation separately from the volume adjustment for all channels.

  For example, Patent Literature 1 is combined with a dialog volume control unit, a main volume control unit, a dialog volume control unit, and a main volume control unit, and a dialog volume adjustment signal and a main volume for individually adjusting the dialog volume and the main volume. An apparatus is described that includes a circuit portion configured to individually generate a volume control signal.

Special table 2010-515290

  In multi-channel audio, a plurality of dialog dedicated channels may be set, and different languages and types of audio may be assigned to the individual dialog dedicated channels. Also, the dialog dedicated channel and language assignment may vary from program to program. For this reason, there is a possibility that the setting of the sound that is reproduced in accordance with the switching of the broadcast channel or program does not necessarily become the sound setting intended by the user.

  For example, as shown in FIG. 19, it is assumed that the audio organization is switched in the order of ar08-1, ar08-2, and ar08-3 as the program is switched. Even if the second English speech is selected in the initial composition ar08-1, only the first Japanese speech is included in the next composition ar08-2. Therefore, in the last composition ar08-3, the first Japanese voice that is the same language as the first voice included in the previous composition ar08-2 may be selected, and the second English voice may not be selected. . Next, as shown in FIG. 20, it is assumed that the audio organization is switched in the order of ar09-1, ar09-2, ar09-3. Initially, when the organization ar-01 including the first Japanese speech is switched to the organization ar09-2, the first Japanese speech having the same language as the originally selected speech is once selected. After the second English voice is selected by the user's operation under the organization ar09-2, when the ar09-3 is switched to the same organization ar09-3 as the original, the second Japanese speech whose language is the same as the originally selected speech One voice is provided.

  In addition, even when audio of different playback methods and languages is provided in parallel for the same content in a program (simultaneous casting), an event may not occur where the audio intended by the user is not set. For example, as shown in FIG. 21, the initial composition ar10-1 has surround 5.1ch Japanese main voice as the first voice and stereo 2.0ch Japanese main voice and surround sound as the second voice. It is assumed that 5.1ch commentary sound and stereo 2.0ch English sound are included. When the explanation sound of surround 5.1ch is selected by the user's operation in the organization ar10-1, when the ar10-2 is switched to the organization ar10-2, the stereo 2 whose language is the same as the speech selected in the organization ar10-1. 0ch Japanese voice is selected. When a stereo 2.0ch English voice is selected by the user's operation, when switching to the same organization ar10-3 as the original, the stereo 2.0ch Japanese whose channel number is the same as the previously selected voice May be selected. In this case, the number of channels and the content are not the same as those of the voice selected in the original organization ar10-1. In the example shown in FIG. 22, when surround 5.1 ch Japanese speech is selected from the initial composition ar 11-1, stereo 2.0 ch Japanese speech and second speech are used as the first speech. It is assumed that the ar 11-2 is switched to the stereo ar11-2 including English audio of stereo 2.0ch. At this time, a stereo 2.0 channel Japanese program having the same language as the sound selected immediately before is selected. After that, when a stereo 2.0 channel English voice is selected by the user's operation, when switching to the ar11-3 knitting which is the same knitting as the original, the surround 5.1ch Japanese voice having the largest number of channels is obtained. Selected.

  The present invention has been made in view of the above points, and a receiving apparatus, a receiving method, and a method that can more reliably set the sound immediately after switching between broadcast channels and programs according to the user's intention. Provide a program.

The present invention has been made in order to solve the above-described problems, and one aspect of the present invention analyzes the configuration information indicating the configuration of the program that is being received, and compiles audio that includes audio of multiple attributes. Generates selection information indicating a voice selected by an operation from voices having a plurality of attributes shown in the composition, and analyzes the selected information and the selected voice. A set of attribute information indicating an attribute is stored in the storage unit, and when the composition is changed, the voice of the attribute selected last among the attributes indicated by the selection information stored in the storage unit is A receiving apparatus includes a reproduction control unit that selects a sound with priority over an audio having an attribute, and an audio processing unit that reproduces the audio having the attribute selected by the reproduction control unit.

  According to the present invention, it is possible to set the audio immediately after switching between broadcast channels and programs to a setting more in line with the user's intention.

It is a block diagram which shows the structure of the broadcast system which concerns on embodiment of this invention. It is a figure which shows the example of the audio | voice data which the transmitter which concerns on embodiment of this invention transmits. It is a figure which shows the example of selection of the asset of the reproduction | regeneration object in the receiver which concerns on embodiment of this invention. It is a block diagram which shows the structure of the transmitter which concerns on embodiment of this invention. It is a figure which shows the example of MPT. It is a figure which shows the example of a MH-voice component descriptor. It is a figure which shows the example of a component classification. It is a block diagram which shows the structure of the receiver which concerns on embodiment of this invention. It is a block diagram which shows the structure of the audio | voice processing part which concerns on embodiment of this invention. It is a block diagram which shows the structure of the control part which concerns on embodiment of this invention. It is a flowchart which shows the reproduction | regeneration processing which concerns on embodiment of this invention. It is a figure which shows the example of selection of the audio | voice in the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice in the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice in the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice by the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice by the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice by the receiver which concerns on embodiment of this invention. It is a figure which shows the other example of selection of the audio | voice by the receiver which concerns on embodiment of this invention. It is a figure which shows the example of selection of the voice which concerns on the conventional receiver. It is a figure which shows the other example of selection of the audio | voice which concerns on the conventional receiver. It is a figure which shows the other example of selection of the audio | voice which concerns on the conventional receiver. It is a figure which shows the other example of selection of the audio | voice which concerns on the conventional receiver.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a broadcasting system 1 according to the present embodiment. The broadcast system 1 includes a transmission device 10 and a reception device 30.

  The transmission device 10 transmits the program data of the broadcast program to the reception device 30 via the broadcast transmission path 20. The program data includes, for example, audio data and video data. The transmitted audio data is not limited to one type, and may include audio data having a plurality of attributes in parallel. The attributes include, for example, a reproduction method, a language, and a sound type. The reproduction system means the number of audio channels related to reproduction and the arrangement of speakers for reproducing the audio of each channel. The playback method is sometimes called an audio mode. The reproduction method is, for example, surround 5.1 ch, 2.0 ch, or the like. The language is a language used to express linguistic information expressed by spoken speech or synthesized speech. The type of audio is a distinction between contents expressed by audio provided in a program. The types of audio include, for example, a main audio representing the main content of the program, a sub audio indicating the subordinate content, a commentary audio explaining the main content, a dialogue or singing of a specific performer, and the like. Also, the same type of audio may be provided in parallel in different playback methods and channels. Such a service is called simulcast. Simulcast is sometimes called simulcast or simply simul. In the following description, the service itself or a part or all of the voice provided by the service may be referred to as simultaneous voice. Further, in the following description, a playback method (number of channels) and a channel used as dialog sound among a plurality of channels may be collectively referred to as a channel state. That is, the channel state is also an element of audio attributes. The attributes of audio data to be transmitted and the number thereof, that is, the organization of audio, may vary depending on the program and some sections thereof. An example of audio data will be described later. In addition, the transmission apparatus 10 comprises the broadcasting equipment of a broadcast provider, for example.

  The broadcast transmission path 20 is a transmission path that transmits various data transmitted by the transmission apparatus 10 to an unspecified number of reception apparatuses 30 unidirectionally and simultaneously. The broadcast transmission path 20 is, for example, a radio wave (broadcast wave) in a predetermined frequency band that is relayed by a broadcast satellite. A part of the broadcast transmission path 20 may include a communication line, for example, a communication line from the transmission device 10 to a transmission facility for transmitting radio waves. In the present embodiment, the broadcast transmission path 20 is relayed by a broadcast satellite, but the form of the broadcast transmission path 20 is not limited to this and may be terrestrial.

  The receiving device 30 displays the video of the program based on the program data received from the transmitting device 10 via the broadcast transmission path 20, and reproduces the audio of the program. The receiving device 30 detects audio data having one or more attributes from the received program data. In addition, the receiving device 30 includes an audio processing unit (described later) that decodes each of a plurality of playback methods included in the program data, and selects any one of a plurality of methods that can be processed. The receiving device 30 is an electronic device having a function capable of receiving a television broadcast, such as a television receiving device or a video recording device.

(Voice data)
Next, an example of audio data transmitted by the transmission apparatus 10 according to the present embodiment will be described. FIG. 2 is a diagram illustrating an example of audio data transmitted by the transmission apparatus 10 according to the present embodiment. This audio data includes assets ST01-ST06 as components. Assets ST01, ST02, ST03, ST04, ST05, and ST06 are identified by component tags 0x10, 0x11, 0x14, 0x15, 0x18, and 0x19, respectively, in the control data used for program playback. The component tag is identification information for identifying individual assets. The asset ST01 is sound data representing the first sound of surround 5.1ch. The first sound is, for example, the main sound of the program. In the asset ST01, 3 channels out of 5.1 channels are assigned to the dialog sound. Dialogue audio means that when a multi-channel surround system is used as a playback system, it is a predetermined channel for the purpose of clearly listening to the contents of speech audio such as commentary audio, movie or drama dialogue, and predetermined singing. The sound to be played. As the predetermined channel, for example, one of front center (C: Center), front left (FL: Front Left), and front right (FR: Front Right) may be designated. As a dialog sound, a plurality of channels may be assigned at a time. The dialog sound of each channel is identified as a main dialog (main), an add dialog (add1), an add dialog (add2), and the like. The main dialog is sometimes called a main dialog. In the asset ST01 shown in FIG. 2, first voices in Japanese, English, and French are assigned as a main dialog (main), an add dialog (add1), and an add dialog (add2), respectively.

The asset ST02 is sound data representing the second sound of surround 5.1ch. The second sound is, for example, commentary sound. To the asset ST02, second sounds in Japanese, English, and French are assigned as a main dialog (main), an add dialog (add1), and an add dialog (add2), respectively.
The asset ST03 is sound data representing the first sound of surround 5.1ch. The main language of the sound of the asset ST03 is English.
The asset ST04 is sound data representing the first sound of surround 5.1ch. The main language of the sound of the asset ST04 is French.
The asset ST05 is audio data representing the first audio of stereo 2.0 ch.
Asset ST06 is audio data representing the second audio of stereo 2.0 ch. The main languages of the assets ST05 and ST06 are Japanese. The receiving device 30 selects one of these audio data.

(Select audio data)
Next, an example of selecting an asset to be reproduced will be described by taking as an example the case where assets ST01 to ST06 shown in FIG. 2 are transmitted as audio data received by the receiving device 30. FIG. 3 is a diagram illustrating an example of selecting an asset to be played in the receiving device 30 according to the present embodiment.

  FIG. 3A illustrates an example in which the receiving apparatus 30 according to the present embodiment can reproduce surround 5.1ch audio as a reproduction method and can select dialog audio. The receiving apparatus 30 receives the audio data of the assets ST01 to ST06 shown in FIG. Is a candidate for playback. Assets ST03 and ST04 are assets related to the first audio of surround 5.1ch in English and French, which are sub-languages other than Japanese. The reason for ignoring the assets ST03 and ST04 is that the asset ST01 includes English and French dialog audio channels as sub-languages. The dialog sound will be described later. The playback control unit of the receiving device 30 sets the asset ST01 (first voice 5.1), ST02 (second voice 5.1), ST05 (first voice 2.0), and ST06 (as a playback method and a voice type). Any one of the second voices 2.0) is switched cyclically every time a voice switching operation is performed. When any of the assets ST01 and ST02 is selected, the playback control unit of the receiving device 30 selects one of Japanese voice (main), English voice (add1), and French voice (add2). Each time a language switching operation is performed, it is switched cyclically. Therefore, the reception device 30 changes the asset for the dialog voice of another language as a reproduction target when reproducing the sound of the surround 5.1ch, and the type of the voice (the distinction between the first voice and the second voice) by the change. Can be selected without changing.

  FIG. 3B illustrates an example in which the receiving apparatus 30 can reproduce surround 5.1ch audio as a reproduction method, but cannot select dialog audio. Unlike the example shown in FIG. 3A, the playback control unit of the receiving device 30 cannot use English and French voices provided as dialog voices, so ST03 related to the first English voice and the second French voice. ST04 related to voice is not ignored. The playback control unit of the receiving device 30 sets the asset ST01 (first voice 5.1), ST02 (second voice 5.1), ST05 (first voice 2.0), and ST06 (as a playback method and a voice type). Any one of the second voices 2.0) is switched cyclically every time a voice switching operation is performed. When the asset ST01 is selected, the playback control unit of the receiving device 30 performs a language switching operation on either the asset ST03 related to the first English sound or the asset ST04 related to the first French sound. Switch cyclically each time. In this example, the receiving apparatus 30 switches the language of the reproduced sound by switching the asset related to the sound to be reproduced when reproducing the first sound of surround 5.1ch. However, in this example, in order to avoid using more assets, English and French voices are not adopted as the second sound of surround 5.1ch.

  FIG. 3C illustrates an example in which the reception apparatus 30 cannot reproduce surround 5.1ch audio or select dialog audio as a reproduction method. The playback control unit of the receiving device 30 performs a sound switching operation on any of the stereo 2.0ch assets ST05 (first audio 2.0) and ST06 (second audio 2.0) as a playback method that can be played back by the own device. Each time it is made, it is switched cyclically. In the example illustrated in FIG. 3C, the playback control unit of the receiving device 30 ignores stereo audio assets in other languages such as English. Therefore, even when a language switching operation is performed, the playback control unit of the receiving device 30 does not switch the language according to the switching of the asset or channel related to the playback target audio.

(Configuration of transmitter)
Next, the configuration of the transmission device 10 according to the present embodiment will be described.
FIG. 4 is a block diagram illustrating a configuration of the transmission device 10 according to the present embodiment. The transmission device 10 includes a program data acquisition unit 11, a control data acquisition unit 12, a multiplexing unit 13, a modulation unit 14, and a transmission unit 15.

  The program data acquisition unit 11 acquires program data from the outside of the transmission device 10. Program data is data representing the content (content) of a broadcast program. The program data includes, for example, video data, audio data, text data, etc. constituting a broadcast program. The program data acquisition unit 11 outputs the acquired program data to the multiplexing unit 13.

  The control data acquisition unit 12 acquires control data from the outside of the transmission device 10. The control data is, for example, MMT-SI (Service Information) in the MMT (MPEG Media Transport) system. The MMT-SI includes, for example, MPT (MMT Package Table; MMT package table) and MH-EIT (MH-event information table, MH-Event Information Table). The MPT is a table including a list of assets that are constituent elements of a broadcast program, that is, video and audio, and information indicating the provision conditions thereof. In other words, the asset list indicates the organization of program data including audio data in the program broadcast at that time. The MH-EIT is a table including information on a program that is broadcast or scheduled to be broadcast within a predetermined period from that time, for example, information indicating a program name, a broadcast time, a description of broadcast contents, and the like. Therefore, the audio organization indicated by the MPT is updated in accordance with the switching of a program or a segment (also referred to as a corner) which is a part of a section with the passage of time or switching of a broadcast channel. The control data acquisition unit 12 outputs the acquired control data to the multiplexing unit 13.

The multiplexing unit 13 multiplexes the program data input from the program data acquisition unit 11 and the control data input from the control data acquisition unit 12 to generate multiplexed data. The multiplexing unit 13 outputs the generated multiplexed data to the modulation unit 14.
The modulation unit 14 modulates the multiplexed data input from the multiplexing unit 13 using a predetermined modulation method (for example, QPSK: Quadrature Phase-shift Keying) to generate a broadcast signal of the base frequency band, and generates The broadcast signal is output to the transmission unit 15.
The transmission unit 15 modulates a carrier wave of a predetermined frequency based on the broadcast signal in the base frequency band input from the modulation unit 14, generates a broadcast signal in the frequency band of the broadcast channel, and transmits the generated broadcast signal to the broadcast wave Radiates as. As a result, a broadcast signal carrying multiplexed data obtained by multiplexing control data and program data is transmitted via the broadcast transmission path 20.

(MPT data structure)
Next, an example of MPT included in the configuration information will be described.
FIG. 5 is a diagram illustrating an example of MPT. In the example shown in the figure, the MPT includes an asset type (asset_type) and an asset descriptor area (asset_descriptors_byte) for each asset. The asset descriptor area (asset_descriptors_byte) is an area in which various descriptors are described. In the asset descriptor area (asset_descriptors_byte), for example, an MH-audio component descriptor (MH-Audio_Component_Descriptor ()) is described. The MH-audio component descriptor (MH-Audio_Component_Descriptor ()) is a descriptor in which parameters relating to audio data constituting the program are described. In the asset type (asset_type), a code indicating the type of asset is described. As the asset type (asset_type), for example, hcv1 indicating video data encoded by HEVC, mp4a indicating audio data encoded by MPEG-4 audio, and the like are described.

(MH-Data structure of voice component descriptor)
Next, an example of the MH-voice component descriptor will be described.
FIG. 6 is a diagram illustrating an example of the MH-voice component descriptor. In the example shown in the figure, the MH-audio component descriptor (MH-Audio_Component_Descriptor () is a component tag (component_tag), a component type (component_type), a simulcast group identification (simulcast_group_tag), a main component flag (main_gmp_main code) (ISO_639_language_code) is included in the component tag (component_tag), which describes the number of audio data assets of each playback method, that is, the number identifying the component stream.The least significant 5 bits of the component type (component_type) Number indicating the method The most significant 1 bit of the component type (component_type) indicates the presence or absence of dialog control information.In the following description, the component stream is identified by describing the asset ID of the audio asset in the component tag. In the simulcast group identification (simulcast_group_tag), the same number is described for the audio data belonging to the group of audio data to be subjected to one simulcast, except for the audio data not to be simulcast. Therefore, a specific code '0xFF' is described, and therefore, when providing simul sound, a number other than '0xFF' is common among assets and a simulcast group identification (simulcast_group_tag) is used. For assets not related to simulcast, 0xFF 'is described in the simulcast group identification (simulcast_group_tag) The main component flag (main_component_flag) indicates whether or not the audio data is the main audio For example, the audio data related to the first audio representing the main content of the program may be designated as the main audio as the main audio, and the language code (ISO_639_language_code) indicates the main language of the audio related to the asset. As language codes, “jpn”, “eng”, “fra”, and “ger” indicate Japanese, English, French, and German, respectively.

  Dialog control information indicating a dialog audio channel and its language information may be added to the audio data. The presence / absence of dialog control information is represented by a flag set in the most significant 1 bit of the component type (component_type) for each asset. For example, flag values “1” and “0” indicate that the audio data includes or does not include dialog control information, respectively. The dialog control information may be included in an audio format conforming to, for example, an MPEG-4 AAC (Advanced Audio Coding) system as a configuration of audio data. In this format, the dialog audio channel (index mapping for dialog_src_index), the number of dialog audio channels (num_dialogue_chans), the main dialog language code (dialogue_main_lang_code), the additional dialog language code (dialogue_dialog_dialog_control) Can be specified as an element. The additional dialog is provided when the number of channels of the dialog sound is 2 or more, and attributes such as language are set for each channel. Multiple add dialogs can be set. The setting related to each dialog sound indicated by the dialog control information has priority over the setting for the asset to which the dialog sound belongs. For example, even if the language code of the 5.1ch surround sound is Japanese, if the language code of the main dialog indicates English, the language of the main dialog is determined to be English. The dialog audio channel is sometimes called a dialog-dedicated channel.

(Example of playback method)
Next, an example of a playback method described in the component type (component_type) will be described.
FIG. 7 is a diagram illustrating an example of component types. In this figure, “0x01”, “0x02”, “0x03”, “0x09”, “0x0C”, and “0x11” are listed as numbers represented by the least significant 5 bits of the component tag. '0x01', '0x02', '0x03', '0x09', '0x0C', and '0x11' are 1/0 mode, 1/0 + 1/0 mode, 2/0 mode, and 3/2. It is a value indicating 1 mode, 5 / 2.1 mode, 3/3 / 3-5 / 2 / 3-3-0 / 0.2 mode. Here, ... / ~ means that the arrangement of the reproduction speakers based on the listening point is ... (voice channel) in the front and ~ (voice channel) in the rear. The numerical value after the decimal point indicates the number of audio channels for reproducing low-frequency audio. The audio channel means a channel that is a reproduction unit of audio, and is distinguished from a broadcast channel indicating a frequency band of broadcast waves. Therefore, the 1/0 mode indicates a single mono 1.0 channel. The 1/0 + 1/0 mode indicates dual mono 1.0 ch × 2. The 2/0 mode indicates stereo 2.0 ch. The 3 / 2.1 mode indicates surround 5.1ch. The 5 / 2.1 mode indicates surround 7.1ch. The 3/3 / 3-5 / 2 / 3- 3/0 / 0.2 mode indicates surround 22.2ch. 3/3/3/5/2 / 3- 3/0 / 0.2 mode 3/3/3 means that three speakers are placed on the front, side and back of the upper layer with reference to the listening point. Indicates that “5/2/3” indicates that the number of speakers is 5, 2, 3 on the front, side, and rear of the middle layer with respect to the listening point. 3/0 / 0.2 indicates that there are 5, 0, and 2 speaker arrangements on the lower layer front, side, and rear, respectively, based on the listening point. However, the two channels behind the lower layer are channels for reproducing low-frequency sound.

(Receiver configuration)
Next, the configuration of the receiving device 30 according to this embodiment will be described.
FIG. 8 is a block diagram illustrating a configuration of the receiving device 30 according to the present embodiment. The receiving device 30 includes a receiving unit 311, a decoding unit 312, a separation unit 313, an audio processing unit 314, a loudspeaker 315, a video decoding unit 316, a video synthesis unit 317, a display unit 318, a storage unit 322, an operation input unit 323 and a control. A portion 331 is included.

The receiving unit 311 receives a broadcast signal transmitted from the transmitting device 10 as a broadcast wave via the broadcast transmission path 20. The receiving unit 311 specifies the frequency band of the broadcast channel specified by the channel selection signal input from the control unit 331. The receiving unit 311 generates a baseband broadcast signal by down-converting a broadcast signal in the frequency band of the broadcast channel received as a broadcast wave. The receiving unit 311 outputs the generated broadcast signal to the decoding unit 312.
The decoding unit 312 generates multiplexed data by demodulating the broadcast signal input from the reception unit 311 using a demodulation method corresponding to the modulation method used by the modulation unit 14 of the transmission device 10. The decoding unit 312 outputs the generated multiplexed data to the separation unit 313.

The separation unit 313 separates the multiplexed data input from the decoding unit 312 into program data and control data. The separation unit 313 refers to the MPT extracted from the control data, and extracts audio data and video data for each asset from the program data. The separation unit 313 outputs the extracted audio data for each asset to the audio processing unit 314 and outputs the video data to the video decoding unit 316. The separation unit 313 outputs the separated control data to the separation unit 313.
The separation unit 313 refers to the component tag of the MH-audio component descriptor described in the descriptor area for each asset of the MPT, and determines the presence or absence of dialog control information for the surround sound asset. When it is determined that there is dialog control information, the separation unit 313 extracts the dialog control information from the audio data of the asset, and outputs the extracted dialog control information to the control unit 331.

  The audio processing unit 314 decodes the audio data input from the separation unit 313 using a decoding method corresponding to the encoding method (for example, MPEG-4 audio) used for encoding, and decodes the original audio data. . The decoded audio data is data indicating the audio level at each time. When audio of a plurality of assets is provided, audio data of a plurality of assets may be input to the audio processing unit 314 and an audio selection signal may be input from the control unit 331. The audio selection signal is a signal that indicates the audio of any one of the plurality of assets. If the instructed asset is surround sound and includes dialog sound, the sound selection signal may further indicate the channel of the dialog sound. That is, the asset and the dialog sound are units for instructing reproduction. In the following description, channels of assets and dialog audio may be collectively referred to as audio units.

  When audio data of a plurality of assets is input, the audio processing unit 314 selects audio data related to an audio unit that is effectively designated by an audio selection signal from the audio data of the plurality of assets. The audio processing unit 314 decodes the selected audio data. For example, “effectively designated” means that one of the reproduction methods that the processing unit has processing capability is designated. The voice processing unit 314 outputs the voice data obtained by decoding to the loudspeaker 315. Therefore, when the sound of a plurality of assets is provided, the sound in the sound unit designated by the sound selection signal is reproduced by the loudspeaker 315. Note that, when audio data of a plurality of assets is input, if an audio selection signal is not input, the audio processing unit 314 outputs audio data obtained by decoding for a predetermined audio unit to the sound amplifying unit 315.

  The loudspeaker 315 reproduces voice based on the voice data input from the voice processor 314. The loudspeaker 315 includes, for example, a speaker. The loudspeaker 315 includes at least a number of speakers corresponding to a predetermined number of channels. The predetermined number of channels corresponds to the maximum value of the number of channels (for example, 5.1ch) used in the reproduction method capable of processing the audio data in the audio processing unit 314. As a result, the loudspeaker 315 can reproduce the sound based on the sound data of the plurality of channels input from the sound processor 314.

The video decoding unit 316 decodes the video data input from the separation unit 313 using the decoding method corresponding to the encoding method (for example, HEVC) used for encoding, and the original video data Is generated. The decoded video data is data indicating signal values forming a video (frame image) at each time. The video decoding unit 316 outputs the decoded video data to the video synthesis unit 317.
The video synthesizing unit 317 synthesizes the video data input from the video decoding unit 316 and various screen data input from the control unit 331 to generate video data indicating a video for display. The screen data includes, for example, guidance screen data for notifying the start of provision of dialog voices and multilingual voices, setting screen data for selecting setting items such as language and voice type, and the like.
The display unit 318 reproduces a video based on the video data input from the video synthesis unit 317. Therefore, on the display unit 318, the GUI screen is displayed superimposed on the video related to the received video data. The display unit 318 is configured to include, for example, a liquid crystal display (LCD: Liquid Crystal Display).

The storage unit 322 stores various data. The storage unit 322 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 operation input unit 323 acquires an operation signal corresponding to the operation input by the user, and outputs the acquired operation signal to the control unit 331. The operation signal includes, for example, a signal indicating power on / off, a signal indicating a broadcast wave channel, and a signal indicating the language of audio to be reproduced. The operation input unit 323 is, for example, an input interface that receives an operation signal from an electronic device such as an operation button, a remote controller, or a mobile terminal device.

  The control unit 331 controls various operations of the receiving device 30. For example, the control unit 331 analyzes the organization of assets provided by analyzing the MPT as configuration information indicating the configuration of the received program. When audio data of a plurality of assets is provided in a program, the control unit 331 analyzes the organization of audio data including audio with a plurality of attributes. When dialog control information is input from the separation unit 313, the control unit 331 further uses the dialog control information as a part of the configuration information in the analysis of the speech organization. Further, the control unit 331 generates a history of selection information indicating the attribute selected by the operation signal from the operation input unit 323, and finally selects the audio attribute indicated by the selection information when the voice organization is changed. The audio unit related to the attribute is selected with priority over the audio units related to other attributes. The control unit 331 generates a sound selection signal indicating the selected sound unit, and outputs the generated sound selection signal to the sound processing unit 314.

(Configuration of audio processing unit)
Next, the configuration of the audio processing unit 314 according to the present embodiment will be described. FIG. 9 is a block diagram illustrating a configuration of the audio processing unit 314 according to the present embodiment. The audio processing unit 314 includes a plurality of decoding processing units 3142 that perform decoding processing for each reproduction method, and a selection unit 3143.

  The decoding processing unit 3142 decodes the audio data for each asset by the reproduction method specified for each asset, and outputs the audio data obtained by the decoding to the selection unit 3143. Each of the individual decryption processing units 3142-1, 3142-2,... Shown in FIG. 9 decrypts the audio data of the individual asset. Individual assets are identified with reference to the MPT. Even when audio data of a different language or type is input for each asset by a plurality of assets for one playback method, the decoding processing unit 3142 can decode the audio data as a whole in parallel.

  The selection unit 3143 selects audio data in units of audio indicated by the audio selection signal input from the control unit 331 from the audio data input from the respective decoding processing units 3142. Individual assets in the audio unit are specified with reference to the MPT, and channels of the individual dialog sounds constituting the surround sound including the dialog sound are specified with reference to the dialog control information. The selection unit 3143 outputs the selected audio data to the loudspeaker 315.

(Configuration of control unit)
Next, the configuration of the control unit 331 according to the present embodiment will be described. FIG. 10 is a block diagram illustrating a configuration of the control unit 331 according to the present embodiment. The control unit 331 includes a configuration information analysis unit 332, a reproduction control unit 333, a display control unit 334, and a channel selection unit 335.

  The configuration information analysis unit 332 analyzes the MPT as the configuration information indicating the configuration of the program from the control data input from the separation unit 313, and identifies assets that configure the program. Then, the configuration information analysis unit 332 determines that the simul sound is present when a common simulcast identification is described in the MPT and a plurality of assets whose type is sound is included, and the simul sound is not included when not included. Judge that it does not exist. Generally, the attributes of audio data are different among a plurality of assets in which simul sound exists. The configuration information analysis unit 332 specifies the attribute of the audio data for each asset with reference to the MPT. Further, the configuration information analysis unit 332 determines the presence / absence of an asset including dialog control information based on the component type described in the descriptor area for each asset of the MPT. The configuration information analysis unit 332 determines that an asset including dialog control information is an asset including dialog voice data. The configuration information analysis unit 332 acquires the dialog control information of the determined asset among the dialog control information input from the separation unit 313. The configuration information analysis unit 332 refers to the acquired dialog control information and identifies the dialog audio channel included in the asset and the audio attribute for each channel. The configuration information analysis unit 332 generates organization information indicating the audio units constituting the program and the audio attributes for each audio unit. That is, the organization information may further include information on the channel of the dialog audio and the audio attribute for each channel for the asset for which the dialog audio is set. The configuration information analysis unit 332 outputs the generated composition information to the reproduction control unit 333 and the display control unit 334.

  The configuration information analysis unit 332 extracts MH-EIT from the control data as configuration information indicating the broadcast time of the program for each broadcast channel. The configuration information analysis unit 332 outputs the extracted MH-EIT to the reproduction control unit 333.

The reproduction control unit 333 selects one of the audio units indicated by the organization information input from the configuration information analysis unit 332. The reproduction control unit 333 generates a sound selection signal indicating the selected sound unit. The reproduction control unit 333 outputs the generated audio selection signal to the audio processing unit 314.
For example, the playback control unit 333 may select a sound unit of sound having an attribute indicated by an operation signal input from the operation input unit 323. In this case, the reproduction control unit 333 generates audio selection information indicating the selected audio unit, and outputs the generated audio selection information to the audio processing unit 314. In addition, the reproduction control unit 333 sequentially stores the audio selection information and attribute information indicating the attribute relating to the audio unit in the storage unit 322 in association with each other. A selection history is formed by a set of voice selection information and attribute information sequentially stored in the storage unit 322.

  The reproduction control unit 333 determines whether or not the audio composition has been changed based on the composition information input from the configuration information analysis unit 332. When changed, the reproduction control unit 333 changes the audio unit related to the attribute indicated by the attribute information corresponding to the audio selection information indicating the audio unit selected last from the audio selection information read from the selection history to other attributes. Is selected with priority over the audio unit. Therefore, the voice having the attribute selected last is selected with priority over other voices. When the selection history is not formed, the playback control unit 333 selects a sound unit having an attribute designated by the operation signal from the operation input unit 323 among the attributes represented as setting items in the setting menu. May be. Here, in the storage unit 322, attribute information represented as a setting item in the setting menu may be stored in advance as part of the menu setting information. The menu setting information may include priority setting information described later.

  If neither the selection history nor the priority setting information is set, the reproduction control unit 333 may select the audio unit according to a predetermined priority order. As the priority order between assets, any one or a combination of descending order of the number of channels for each playback method, order of languages, order of audio types may be used. In that case, for example, the language may have priority over the number of channels, and the number of channels may have priority over the type of audio. When the component tag number is assigned to each asset according to the order, the component tag number set for each asset may be used as the priority order between assets. As the order of priority of dialog voices, any one or combination of language order, voice type order, and channel (speaker placement) order may be used. In that case, for example, the language may be prioritized over the audio type, and the audio type may be prioritized over the channel. The reproduction control unit 333 outputs audio selection information indicating the selected audio unit to the audio processing unit 314.

  The playback control unit 333 detects a change in the program over time based on the MH-EIT input from the configuration information analysis unit 332. Further, the reproduction control unit 333 detects a change in the program according to a change in the broadcast channel indicated by the channel selection signal input from the channel selection unit 335. The reproduction control unit 333 may delete the selection history stored in the storage unit 322 when detecting a change in the program. Further, the reproduction control unit 333 may erase the selection history stored in the storage unit 322 when detecting a change in the broadcast channel indicated by the channel selection signal from the channel selection unit 335.

  The display control unit 334 controls display of various screens related to the function of the receiving device 30. For example, when the display control unit 334 determines that provision of audio assets related to a plurality of languages is started based on the composition information input from the configuration information analysis unit 332, a multilingual broadcast guidance screen stored in advance is stored. Data is read from the storage unit 322. The multilingual broadcast guide screen data is data representing a multilingual broadcast guide screen for notifying that a plurality of languages of audio are provided in a program. The display control unit 334 causes the display unit 318 to display the multilingual broadcast guide screen by outputting the read multilingual broadcast guide screen data to the video composition unit 317 for a predetermined time (for example, 15 seconds). Further, when the display control unit 334 determines that provision of an asset including a dialog voice is started based on the composition information, the display control unit 334 reads out the dialog voice guidance screen data stored in advance from the storage unit 322. Dialog voice guidance screen data is data representing a dialog voice guidance screen for notifying that a dialog voice is provided in a program. The display control unit 334 causes the display unit 318 to display the dialog voice guidance screen by outputting the read dialog voice guidance screen data to the video synthesis unit 317 for a predetermined time. The display control unit 334 displays pre-stored setting screen data from the storage unit 322 when the operation is input for the first time or when the operation signal input from the operation input unit 323 instructs setting of setting items such as language and voice type. read out. The display control unit 334 causes the display unit 318 to display the setting screen by outputting the read setting screen data to the video composition unit 317. When the setting screen is displayed, the control unit 331 generates setting information indicating setting items indicated by the operation signal from the operation input unit 323. The control unit 331 stores the generated setting information in the storage unit 322.

  The channel selection unit 335 detects an operation signal indicating a broadcast channel from the operation input unit 323. The channel selection unit 335 generates a channel selection signal indicating a broadcast channel represented by the detected operation signal, and outputs the generated channel selection signal to the reproduction control unit 333 and the reception unit 311.

(Reproduction processing)
Next, the reproduction process according to the present embodiment will be described. FIG. 11 is a flowchart showing the reproduction processing according to the present embodiment.
(Step S101) The separation unit 313 separates the multiplexed data based on the broadcast signal received from the transmission device 10 into program data and control data. Thereafter, the process proceeds to step S102.
(Step S102) The configuration information analysis unit 332 acquires organization information indicating the organization of audio provided by the program from the configuration information indicating the configuration of the program from the control data. The playback control unit 333 determines whether or not the voice organization has changed. If it is determined that the change has occurred (YES in step S102), the process proceeds to step S103. When it determines with having not changed (step S102 NO), it returns to step S101.

(Step S103) The reproduction control unit 333 determines whether or not audio selection information indicating an audio unit having an attribute (for example, channel state, language, etc.) selected last in the selection history is recorded. Here, “selected” means to be determined based on an operation signal generated in response to a user operation. If it is determined that it is recorded (YES in step S103), the process proceeds to step S103a. If it is determined that the data has not been recorded (NO in step S103), the process proceeds to step S105.
(Step S103a) The reproduction control unit 333 receives the program data received at that time as the audio unit having the same attribute (that is, component type and language) as the audio unit attribute indicated by the recorded audio selection information. It is determined whether or not it exists. If it is determined that it exists (YES in step S103a), the process proceeds to step S104. If it is determined that it does not exist (NO in step S103a), the process proceeds to step S105.

(Step S104) The playback control unit 333 selects from the program data received at that time an audio unit having the same component type and language as the last selected attribute determined to be the same. Then, it progresses to step S110.

(Step S <b> 105) The reproduction control unit 333 determines whether or not the audio unit of the same language as the language indicated by the priority language setting information read from the storage unit 322 is included in the program data received at that time. . When it is determined that it is included (YES in step S105), the process proceeds to step S106. When it is determined that it is not included (NO in step S105), the process proceeds to step S109.

(Step S106) The playback control unit 333 has an audio unit in the same language as the language indicated by the priority language setting information in the same asset as the asset that is playing the audio selected immediately before (or the same asset). It is determined whether or not there is. When it is determined that it exists (YES in step S106), the process proceeds to step S107. When it is determined that it does not exist (NO in step S106), the process proceeds to step S108.

(Step S107) The playback control unit 333 selects a voice unit (or the asset itself) in the same asset and in the same language as the language indicated by the priority language setting information. Then, it progresses to step S110.
(Step S108) The playback control unit 333 selects a sound unit (or the asset itself) in the same language as the language indicated by the priority language setting information, which exists in another asset. Then, it progresses to step S110.
(Step S109) The playback control unit 333 preferentially selects an asset having a smaller component tag value as a predetermined priority. For example, the component tag value is smaller as the playback method has more channels. In the same playback method, for example, the component tag value of an asset whose audio type is the main audio is smaller than an asset whose audio type is other than that. With the same number of channels and audio types, component tag values increase in the order of Japanese, English, and French. When a plurality of dialog sound channels are included in the sound unit to be selected, the playback control unit 333 selects the dialog sound according to the order of a predetermined channel or the order of sound type or language for each channel. May be. In the case of surround 5.1 ch, the order of predetermined channels is, for example, the order of front center, front left, front right, rear left, and rear right. The order of languages is, for example, the order of Japanese, English, and French described above. Then, it progresses to step S110.

(Step S110) The reproduction control unit 333 outputs the audio data related to the audio unit related to the selected attribute to the audio processing unit 314, thereby causing the loudspeaker 315 to reproduce the audio having the selected attribute. Then, the process shown in FIG. 11 is complete | finished.
Note that in step S108, when there are a plurality of audio units (or other assets themselves) existing in other assets, the playback control unit 333 selects one of those audio units as in step S109. May be selected according to a predetermined asset and channel priority.
In some cases, a plurality of languages are set in the priority language setting information. Therefore, in steps S107 and S108, a plurality of audio units may be selected as audio units of the same language. In that case, the reproduction control unit 333 may preferentially select a voice unit related to a language having a higher priority set in the priority language setting information.

(Example of audio selection)
Next, an example of audio selection by the receiving device 30 according to the present embodiment will be described. In the selection example described below, it is assumed that the first language indicated by the priority language information is Japanese, the second language is English, and the third language is French. In addition, the voice setting instructed by the operation signal input from the operation input unit 323 has priority over the voice setting instructed by the priority language information included in the menu setting information stored in the storage unit 322 in advance. In addition, when the selected voice unit is lost in accordance with switching of the organization of the voice unit, the reproduction control unit 333 selects the voice unit according to the priority order for each language indicated by the priority language information. When a language is selected based on an operation signal generated when the voice switch button of the remote controller is pressed, the playback control unit 333 selects a voice unit related to the voice of that language. When there is no audio unit related to the language of the audio specified by the operation signal, the playback control unit 333 includes the audio unit including the audio of the language selected according to the priority (menu priority) indicated by the priority language information. Select. Even when the voice switching button for instructing voice switching is not used in the operation input unit 323, the playback control unit 333 may select the voice unit including the language selected according to the priority indicated by the priority language information. Good.

  Also, in the asset selected at that time, when the channel related to the audio of the selected language is not included, the playback control unit 333 searches for another audio unit including the audio of the same language as the selected language. To do. When there are a plurality of audio units in the same language, the playback control unit 333 may preferentially select an asset with a smaller component tag value, and preferentially select a channel with a smaller channel number. In the example described below, the component tag value for each asset broadcast on the same broadcast channel is set to a common value for assets having common attributes (a set of language, component type, etc.). That is, regardless of the switching of programs on the same broadcast channel, if the attribute of the asset being broadcast is the same, the component tag value does not change. The component tag value is larger for an asset having a larger number of channels. For an asset having the same number of channels, the sub audio (second audio) asset may be larger than the main audio (first audio) as the audio type. . The channel number of the dialog voice may be set to increase in order of 1, 2, and 3, for each of main, add1, and add2, for example. As a result, “main” is given priority over “add1” over “add1”.

  FIG. 12 is a diagram illustrating an example of audio selection by the receiving device 30 according to the present embodiment. In the example shown in FIG. 12, the organization of audio data is switched to ar01-1, ar01-2, ar01-3 in accordance with program switching. Each of the formations ar01-1, ar-01-2, and ar01-3 includes an asset whose sound reproduction method is surround 5.1ch and an asset whose stereo is 2.0ch. However, while the organization ar01-1 provides Japanese, English, and French speech, the organization ar01-2 does not provide French speech. And in composition ar01-3, the French voice is provided again. French audio is provided in the channels 5.11 and ar01-3 as surround 5.1ch dialog audio channels (add2) and stereo 2.0ch assets. The surround 5.1ch dialog audio channel (add2) selected in the organization ar01-1 is lost when the organization ar01-2 is switched to. At this time, the playback control unit 333 determines that, as the language indicated by the priority language setting information, the channel of the Japanese audio selected last by the operation exists in the surround 5.1ch asset selected until immediately before. . The playback control unit 333 selects a dialog audio channel (main) as the Japanese audio channel. Thereafter, when switching to the organization ar01-3, the channel of the French dialog voice is included again in the assets of surround 5.1ch. At this time, the playback control unit 333 selects the French audio channel (add2) as the last selected attribute recorded in the selection history.

In FIG. 12, reference numerals 0x10, 0x18, 0x19, and 0x1A are component tags indicating the respective assets. In the example shown in FIG. 12, the component tag value is smaller for an asset related to a playback method having a larger number of channels. In addition, between the languages, the component tag values increase in the order of Japanese, English, and French. Since these component tag values are uniformly given according to the attribute of the asset, when the operation signal and priority setting information cannot be acquired, the playback control unit 333 gives priority to the asset with the smaller component tag value. You may choose.
FIG. 13 is a diagram illustrating another example of selection of audio by the reception device 30 according to the present embodiment. In the example shown in FIG. 13, the organization of the audio data is switched to ar02-1, ar02-2, ar02-3 in accordance with the program switching. Each of the formations ar02-1 and ar02-2 includes an asset whose sound reproduction method is surround 5.1ch and an asset whose stereo is 2.0ch. The surround 5.1ch dialog audio channel (add1) selected in the organization ar02-1 is maintained even if the channel is switched to the organization ar01-2, and is selected as it is. However, in the formation ar02-3, an asset which is surround 5.1ch is lost. At this time, the playback control unit 333 determines that English audio as the last selected attribute recorded in the selection history exists in the stereo 2.0ch asset in the provided audio data. The playback control unit 333 selects a stereo 2.0ch asset related to the English sound.

  FIG. 14 is a diagram illustrating another example of selection of audio by the reception device 30 according to the present embodiment. In the example shown in FIG. 14, the organization of audio data is switched to ar03-1, ar03-2, ar03-3 in accordance with the switching of programs. The formations ar03-1 and ar03-2 each include an asset whose sound reproduction method is surround 5.1ch and an asset whose stereo is 2.0ch. The surround 5.1ch dialog audio channel (add2) selected in the organization ar03-1 is lost when the organization ar03-2 is switched to. At this time, the playback control unit 333 determines that the channel of the Japanese dialog sound exists as the first priority language indicated by the priority language setting information in the surround 5.1ch asset selected until immediately before. The reproduction control unit 333 selects a dialog audio channel related to the Japanese audio. In composition ar03-3, an asset that is surround 5.1ch is lost. At this time, the playback control unit 333 determines that French sound as the last selected attribute recorded in the selection history exists in the stereo 2.0ch asset of the provided sound data. The playback control unit 333 selects a stereo 2.0ch asset related to the French voice.

  FIG. 15 is a diagram illustrating another example of selection of audio by the reception device 30 according to the present embodiment. In the example shown in FIG. 15, the organization of the audio data is switched to ar04-1, ar04-2, ar04-3 in accordance with the program switching. The formations ar04-1 and ar04-2 both include assets whose audio playback method is stereo 2.0ch. The stereo 2.0ch asset related to the French voice selected in the organization ar04-1 is lost when the asset is switched to the organization ar04-2. At this time, the playback control unit 333 determines that, as the language indicated by the priority language setting information, a Japanese dialog sound asset exists in a stereo 2.0ch asset that has the same playback method as the asset selected immediately before. To do. The playback control unit 333 selects a stereo 2.0ch asset related to the Japanese voice. In the composition ar04-3, instead of losing the surround 5.1ch asset, the stereo 2.0ch asset related to the French voice is included again. At this time, the playback control unit 333 determines that French sound as the last selected attribute recorded in the selection history exists in the stereo 2.0ch asset of the provided sound data. The playback control unit 333 selects a stereo 2.0ch asset related to the French voice.

  FIG. 16 is a diagram illustrating another example of audio selection by the reception device 30 according to the present embodiment. In the example shown in FIG. 16, the organization of audio data is switched to ar05-1, ar05-2, ar05-3 in accordance with program switching. Each of the formations ar05-1, ar05-2, and ar05-3 includes two assets whose sound reproduction method is surround 5.1ch and one asset whose stereo is 2.0ch. For one asset of the two assets of surround 5.1ch, the audio type is the first audio, and for the other asset, the audio type is the second audio. The French dialog audio channel (add2) selected in the second audio asset in organization ar05-1 is lost when switching to organization ar05-2. At this time, the playback control unit 333 determines that the channel of the Japanese dialog sound exists in the selected asset until just before as the language indicated by the priority language setting information. The reproduction control unit 333 selects a dialog audio channel related to the Japanese audio. In composition ar05-3, the channel (add2) of the French dialog voice is included again in the asset. At this time, the reproduction control unit 333 determines that the French dialog voice channel (add2) recorded in the selection history as the last selected attribute exists in the asset selected immediately before the provided voice data. judge. The playback control unit 333 selects a French dialog voice channel (add2) in the asset.

  FIG. 17 is a diagram illustrating another example of selection of audio by the reception device 30 according to the present embodiment. In the example shown in FIG. 17, the organization of audio data is switched to ar06-1, ar06-2, ar06-3 in accordance with the switching of programs. Each of the compositions ar06-1 and ar06-2 includes two assets whose sound reproduction method is surround 5.1ch and one asset whose stereo is 2.0ch. The French dialog audio channel (add2) selected in the second audio asset whose composition ar06-1 is the surround 5.1ch is lost when the ar06-2 is switched to the ar06-2. At this time, the playback control unit 333 determines that the channel of the Japanese dialog sound exists in the selected asset until just before as the highest priority language indicated by the priority language setting information. The reproduction control unit 333 selects a dialog audio channel related to the Japanese audio. When switching to organization ar06-3, the asset containing the channel of the selected dialog audio is lost. At this time, the playback control unit 333 records in the selection history the asset having the same playback method as that of the asset selected up to immediately before in the surround 5.1ch and the audio type being the first audio. It is determined that there is a French dialog voice channel (add2) as the selected attribute. The playback control unit 333 selects a French dialog voice channel (add2) in the asset.

  FIG. 18 is a diagram illustrating another example of selection of audio by the reception device 30 according to the present embodiment. In the example shown in FIG. 18, the organization of the audio data is switched to ar07-1, ar07-2, ar07-3 in accordance with the program switching. The formations ar07-1 and ar07-2 are the same as the formations ar06-1 and ar06-2 shown in FIG. The organization ar07-3 includes an asset whose sound reproduction method is surround 5.1 ch and one asset each of which is stereo 2.0 ch. However, in the surround 5.1ch asset of the organization ar07-3, the voice of the foreign language other than the main language (for example, Japanese) is not assigned to the dialog audio channel. The dialog audio channel of the asset includes a main audio channel (main), an explanation audio channel (add1), and other explanation audio channels (add2). In the example shown in FIG. 18, in the compositions ar07-1 and ar07-2, the French dialog voice channel (add2) and the Japanese dialog voice channel (add1) are selected. When switching to organization ar07-3, the asset containing the channel of the selected dialog audio is lost. At this time, the playback control unit 333 records, in the selection history, an asset whose sound type is the first sound as the remaining asset among the surround 5.1ch that is the same playback method as the asset selected immediately before. It is determined that there is no French dialog voice channel as the last selected attribute. Then, the playback control unit 333 determines that neither the audio asset in the language indicated by the priority language setting information nor the channel is included in the program received at that time. At this time, the reproduction control unit 333 selects a main audio channel having a higher priority than the commentary audio as a predetermined priority.

As described above, the receiving device 30 according to the present embodiment analyzes the configuration information indicating the configuration of the received program and analyzes the organization of the audio including the audio with a plurality of attributes. Is provided. In addition, the receiving device 30 generates selection information indicating the attribute selected by the operation, and when the composition is changed, the sound of the attribute selected last among the attributes indicated by the selection information is obtained from the sound of other attributes. Is also provided with a reproduction control unit 333 that preferentially selects. In addition, the receiving device 30 includes an audio processing unit 314 that reproduces audio having the attribute selected by the reproduction control unit 333.
With this configuration, when the audio having the attribute selected by the operation is lost from the audio broadcast in the received program and the audio having the attribute is broadcast again, the audio is selected. Even when the special operation is not performed again, the usability of the receiving device 30 is improved by preferentially selecting the sound having the attribute according to the user's intention.

In addition, when the audio having the attribute indicated by the selection information generated in the received program is not included, the playback control unit 333 is specified in the attribute setting related to the function of the receiving device 30 itself, for example, the priority language setting information. You may select the voice of the selected attribute.
With this configuration, attributes that should be preferentially selected in the attribute setting are set in advance, so that even if no special operation is performed, the sound of the attribute according to the user's intention is preferentially selected. The usability of the receiving device 30 is improved.

When the received program does not include the audio having the attribute specified in the selection information, the reproduction control unit 333 reproduces the audio having a large number of channels among the reproduction methods that can be reproduced by the audio processing unit 314 as the audio attribute. If the audio of the system is selected with priority, and the audio of the playback system includes audio of multiple languages, one of the audios of multiple languages is selected as the attribute with a predetermined priority, for example, the component tag value or channel number You may choose based on.
With this configuration, a playback system sound with a larger number of channels that perform the function of the receiving device 30 is played back preferentially. In addition, when a plurality of audios of the playback method are provided, one of the plurality of audios is a predetermined audio type or language order represented by a component tag value or a channel number as a predetermined priority. It is determined based on.

In the receiving device 30 according to the present embodiment, when the received program is changed or when the broadcast channel for receiving the program is changed, the playback control unit 333 selects the attribute selected by the operation. The selection information indicating may be deleted.
With this configuration, selection information that is no longer needed is erased in accordance with a change in audio organization associated with switching between programs and broadcast channels. For this reason, it is avoided that a voice having an attribute that does not conform to the user's intention is preferentially selected based on the selection information that is no longer necessary.

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

For example, in the receiving device 30, the loudspeaker 315, the display unit 318, and the operation input unit 323 do not necessarily have to be integrated, and any one or a combination of these may be omitted.
Further, in the above description, the case where the audio reproduction method is mainly surround 5.1 ch or stereo 2.0 ch is taken as an example, but the present invention is not limited to this. The playback method may be, for example, surround 22.2ch. Moreover, although the case where the asset for which the dialog sound is provided is mainly an asset whose reproduction method is surround 5.1ch is exemplified, it is not limited thereto. The dialog sound may be provided by an asset whose number of channels is three or more, for example, an asset whose playback method is surround 22.2ch.

  In the above-described embodiment, the case where the MMT / TLV (Type Length Value) method mainly defined in MPEG-H is used as the multiplexing / transmission method for transmitting various data is exemplified. Multiplexing / transmission schemes, for example, schemes defined in MPEG-2 Systems may be used. An elementary stream in MPEG-2 Systems corresponds to the asset described above. In addition, a data format, an encryption method, and an encoding method related to transmission may be the format or method defined by the multiplexing / transmission method.

  Further, a part of the transmission device 10 and a part of the reception device 30 in the above-described embodiment may be realized by a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed. Here, the “computer system” is a computer system built in the recognition data transmission apparatus, and includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In this case, a volatile memory inside a computer system that serves as a server or a client may be included that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

In addition, this invention can be implemented also in the following aspect.
(1) A configuration information analysis unit that analyzes the configuration information indicating the configuration of the received program to analyze the organization of audio including a plurality of attributes of audio, and generates selection information indicating the attribute selected by the operation When the composition is changed, the reproduction control unit that selects the sound of the attribute selected last among the attributes indicated by the selection information in preference to the sound of other attributes, and the reproduction control unit selects And a voice processing unit that plays back the voice of the attribute.

(2) The reception device according to (1), wherein, when the program does not include the sound having the attribute indicated by the selection information, the reproduction control unit selects the sound having the attribute specified in the attribute setting relating to the function of the own device. .

(3) When the audio of the attribute specified in the selection information is not included in the program, the playback control unit has a playback method with a large number of channels among the playback methods that can be played by the audio processing unit as the attribute. The voice is selected with priority, and when the sound of the reproduction method includes a plurality of languages, one of the plurality of languages is selected as the attribute based on a predetermined priority (2). Receiver device.

(4) When the program is changed or when a broadcast channel for receiving the program is changed, the reproduction control unit deletes the selection information. (1) to (3) apparatus.

(5) A receiving method in the receiving apparatus, which is selected by a configuration information analysis process of analyzing configuration information indicating a configuration of a received program and analyzing a composition of audio including audio of a plurality of attributes, and an operation. A reproduction control process for generating selection information indicating a selected attribute, and selecting the sound of the attribute selected last among the attributes indicated by the selection information in preference to the sound of other attributes when the composition is changed And a sound processing step of playing back the sound having the attribute selected in the playback control step.

(6) The configuration information analysis procedure for analyzing the composition of the audio including a plurality of attributes by analyzing the configuration information indicating the configuration of the received program on the computer of the receiving apparatus, and the attribute selected by the operation A reproduction control procedure for generating selection information and selecting a sound having the attribute selected last among attributes indicated by the selection information when the composition is changed in preference to a sound having another attribute; A program for executing a sound processing procedure for reproducing sound having an attribute selected in the procedure.

  DESCRIPTION OF SYMBOLS 1 ... Broadcast system, 10 ... Transmission apparatus, 11 ... Program data acquisition part, 12 ... Control data acquisition part, 13 ... Multiplexing part, 14 ... Modulation part, 15 ... Transmission part, 20 ... Broadcast transmission path, 30 ... Reception apparatus 311: Reception unit, 312 ... Decoding unit, 313 ... Separation unit, 314 ... Audio processing unit, 315 ... Loudspeaker unit, 316 ... Video decoding unit, 317 ... Video composition unit, 318 ... Display unit, 322 ... Storage unit, 323 ... operation input unit, 331 ... control unit, 332 ... configuration information analysis unit, 333 ... reproduction control unit, 334 ... display control unit, 335 ... channel selection unit, 3142 ... decoding processing unit, 3143 ... selection unit

Claims (6)

A configuration information analyzing unit that analyzes the configuration information indicating the configuration of the received program and analyzes the organization of the audio including audio of multiple attributes;
A storage unit;
A selection information indicating a voice selected by an operation among a plurality of voices having the attribute indicated by the organization is generated, and a set of attribute information indicating an attribute corresponding to the selected information and the selected voice is stored in the storage unit. Remember,
When the knitting is changed, the voice last selected attribute of the attribute indicating the selected information stored in the storage unit, a reproduction control unit to select in priority to the voice of the other attributes,
An audio processing unit for reproducing the audio of the attribute selected by the reproduction control unit;
A receiving device. A configuration information analyzing unit that analyzes the configuration information indicating the configuration of the received program and analyzes the organization of the audio including audio of multiple attributes;
Select information indicating the attribute selected by the operation is generated, and when the composition is changed, the sound of the attribute selected last among the attributes indicated by the selection information is selected with priority over the sound of other attributes A playback control unit,
An audio processing unit for reproducing the audio of the attribute selected by the reproduction control unit;
Equipped with a,
When the playback control unit does not include the audio of the attribute indicated by the selection information in the program,
As the attribute, when the sound of the playback method having a larger number of channels is selected with priority among the playback methods that can be played back by the sound processing unit, and the sound of the playback method includes sound of a plurality of languages, the attribute is A receiving apparatus that selects one of a plurality of languages of speech based on a predetermined priority. A configuration information analyzing unit that analyzes the configuration information indicating the configuration of the received program and analyzes the organization of the audio including audio of multiple attributes;
Select information indicating the attribute selected by the operation is generated, and when the composition is changed, the sound of the attribute selected last among the attributes indicated by the selection information is selected with priority over the sound of other attributes A playback control unit,
An audio processing unit for reproducing the audio of the attribute selected by the reproduction control unit;
Equipped with a,
The playback control unit is a receiving device in which the playback control unit erases the selection information when the program is changed or when a broadcast channel for receiving the program is changed . 4. The playback control unit according to any one of claims 1 to 3, wherein when the program does not include sound having the attribute indicated by the selection information, the playback control unit selects sound having the attribute specified in the attribute setting relating to the function of the own device. receiver according to an item or. A receiving method in a receiving device,
A configuration information analysis process for analyzing the composition of the received program and analyzing the composition of the sound including the sound of multiple attributes;
Generates selection information indicating a voice selected by an operation from voices having a plurality of attributes shown in the organization, and stores a set of attribute information indicating an attribute corresponding to the selected information and the selected voice in a storage unit And
When the composition is changed, a playback control process of selecting the attribute of the attribute selected last among the attributes indicated by the selection information stored in the storage unit in preference to the sound of other attributes;
An audio processing process for reproducing audio of the attribute selected in the reproduction control process;
Receiving method. In the computer of the receiving device,
A configuration information analysis procedure for analyzing the composition of the received program and analyzing the composition of the sound including the sound of multiple attributes;
Generates selection information indicating a voice selected by an operation from voices having a plurality of attributes shown in the organization, and stores a set of attribute information indicating an attribute corresponding to the selected information and the selected voice in a storage unit Then, when the composition is changed, a playback control procedure for selecting the sound of the attribute selected last among the attributes indicated by the selection information stored in the storage unit with priority over the sound of other attributes ,
An audio processing procedure for reproducing audio of the attribute selected in the reproduction control procedure;
A program for running

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