WO2020259604A1 - 数字内容发送装置、发送方法、数字内容接收装置、接收方法 - Google Patents

数字内容发送装置、发送方法、数字内容接收装置、接收方法 Download PDF

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Publication number
WO2020259604A1
WO2020259604A1 PCT/CN2020/098170 CN2020098170W WO2020259604A1 WO 2020259604 A1 WO2020259604 A1 WO 2020259604A1 CN 2020098170 W CN2020098170 W CN 2020098170W WO 2020259604 A1 WO2020259604 A1 WO 2020259604A1
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Prior art keywords
tlv
data
stream
control information
digital content
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PCT/CN2020/098170
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English (en)
French (fr)
Inventor
廣田敦志
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Hisense Visual Technology Co Ltd
Toshiba Visual Solutions Corp
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Hisense Visual Technology Co Ltd
Toshiba Visual Solutions Corp
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Priority claimed from JP2019121938A external-priority patent/JP7247036B2/ja
Priority claimed from JP2019121939A external-priority patent/JP7146702B2/ja
Application filed by Hisense Visual Technology Co Ltd, Toshiba Visual Solutions Corp filed Critical Hisense Visual Technology Co Ltd
Priority to CN202080002687.6A priority Critical patent/CN112449749B/zh
Publication of WO2020259604A1 publication Critical patent/WO2020259604A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast

Definitions

  • the embodiment relates to a digital content sending device, a sending method, a digital content receiving device, and a receiving method.
  • ARIB-STD-B21 specifies partial transmission based on the MPEG-2TS method
  • the specifications of the stream hereinafter referred to as partial TS).
  • the above-mentioned partial TS is a TS obtained by selecting and extracting a specific program and a component (Component) in the program from a transport stream (hereinafter referred to as TS) received by a television receiver.
  • This partial TS is used as a format (content format) when the content received by the above-mentioned television receiving device is transmitted to external electronic devices such as other television receiving devices and tablet terminals.
  • the content can be used in external tablet terminals etc. through the transmission and reception of partial TS, so for the purpose of copyright protection and other purposes, in order to make it clear where the source of the program that is the basis of partial TS generation is broadcasted, it is necessary Record the identifiers of network_id, transport_stream_id, and service_id in the partial TS.
  • Non-Patent Document 1 ARIB STD-B21 Version 5.10 "Receiving Device for Digital Broadcasting" Standard Specification
  • Non-Patent Document 2 ARIB STD-B63 Version 1.7 "Receiving Device for Advanced Broadband Digital Satellite Broadcasting" Standard Specification
  • the technical problem to be solved by the present invention is to provide a digital content sending device and a sending method, which adopts a partial stream content form, so that the source of the broadcast program sent based on the MMT/TLV method is clearly visible.
  • a digital content transmission device includes a receiving unit, an acquisition and separation unit, a partial stream generation unit, and a transmission unit.
  • the reception unit receives a transmission signal transmitted based on the MMT/TLV method. If the acquisition and separation unit acquires the MMT/ The TLV stream separates the component data related to the specific content and the first control information data from the MMT/TLV stream, and the partial stream generating unit extracts the associated data used to determine the source of the specific content from the first control information data, and The partial stream is generated based on the second control information data and the component data, wherein the second control information data is generated by including associated data, and the transmitting unit transmits the partial stream.
  • a digital content receiving device includes a receiving unit, a separation and acquisition unit, and an extraction unit.
  • the receiving unit receives a partial stream generated from a transmission signal that is a signal transmitted based on the MMT/TLV method.
  • the separation and acquisition unit The component data and control information data related to the specific content are obtained separately from the partial stream, and the extraction unit extracts the associated data used to determine the source of the specific content from the control information data.
  • FIG. 1 is a diagram showing an example of a television receiving device and electronic equipment corresponding to digital broadcasting based on the MMT/TLV method of this embodiment
  • FIG. 2 is a block diagram showing an example of the functional configuration of a television receiving device corresponding to digital broadcasting based on the MMT/TLV method of the embodiment;
  • FIG. 3 is a block diagram showing an example of the functional configuration of an electronic device corresponding to digital broadcasting based on the MMT/TLV method of the embodiment
  • FIG. 4 is a flowchart showing an example of processing operations of an electronic device on the information source side of the television receiving apparatus corresponding to digital broadcasting based on the MMT/TLV method of the embodiment;
  • FIG. 5 is a diagram showing an example of the configuration of MH-SIT transmitted by partial TLV streaming in this embodiment
  • FIG. 6 is a diagram showing an example of the structure of a descriptor transmitted through a partial TLV stream in this embodiment
  • FIG. 7 is a flowchart showing an example of processing operations of the electronic device on the client side of the embodiment.
  • FIG. 8 is a diagram showing an example of a network of advanced broadband digital satellite broadcasting of Modification 1;
  • FIG. 9 is a block diagram showing an example of the functional configuration of a television receiving device in a network of advanced broadband digital satellite broadcasting according to Modification 2;
  • FIG. 10 is a flowchart showing an example of operation when the television receiving device of the modification example transmits a partial TLV stream
  • FIG. 11 is a block diagram showing an example of the functional configuration of a television receiving device that receives partial TLV streams in this modification
  • FIG. 12 is a flowchart showing an example of operation when the television receiving device receives a partial TLV stream in this modification.
  • FIG. 1 is a diagram showing an example of a television receiver and electronic equipment corresponding to digital broadcasting based on the MMT/TLV method according to this embodiment.
  • the television receiving device 1 receives a broadcasting signal of digital broadcasting based on the MMT/TLV method, and obtains the content transmitted through the broadcasting signal.
  • the electronic devices 2A, 2B, and 2C (referred to as electronic device 2 when no special distinction is required) have interfaces 3A, 3B, and 3C that can communicate with the television receiving device 1 respectively (when no special distinction is required, Called interface 3), the content sent by the broadcast signal is acquired via the interface 3, and the display output is performed.
  • the number of electronic devices 2 is three, but depending on the interface of the television receiver 1, it can be any number of one or more.
  • the electronic device 2 has a function (resolution, frame rate, etc.) capable of using content (broadcast program) transmitted based on the MMT/TLV method.
  • the electronic device 2 may be, for example, a tablet computer terminal, a monitor, a television receiver, and the like.
  • the interface 3 of the television receiving apparatus 1 and the electronic device 2 may be wired or wireless.
  • the television receiver 1 and the electronic device 2 may also be used to form a network compliant with DLNA (Registered Trademark) (Digital Living Network Alliance) or its extension method, and enable communication.
  • DLNA Registered Trademark
  • the electronic device 2 may be a smartphone.
  • FIG. 2 is a diagram showing an example of the functional configuration of a television receiving device compatible with digital broadcasting based on the MMT/TLV method according to the embodiment.
  • the television receiver 1 receives a digital broadcast signal based on the MMT/TLV method through the antenna 11, and demodulates the broadcast signal through the tuner 12 to obtain digital data (TLV stream) in the form of TLV (Type Length Value).
  • TLV stream digital data
  • the scrambled data is descrambled in the descrambling unit 13, converted from the TLV stream to IP/UDP stream in the demultiplexing unit 14, and further converted to MMT (Mpeg Media Transport, MPEG media transmission)
  • the stream is separated into component data (such as encoded image data, voice data, text data, etc.) and SI (Signaling Information) data as control information data.
  • the decoder 15 is used to decode the component data into service data such as image signals, voice signals, text data, etc.
  • the service data is input to the output processing unit 16, output timing, display method, etc. are adjusted, and output from the output unit 17, such as a display device and a speaker.
  • SI data is control information related to the broadcasting system such as information related to broadcast programs and control information related to multiplexing of IP packets.
  • the demultiplexing unit 14 also separates the time information data in the NTP format stored in the IP/UDP format in the TLV stream, reproduces the clock synchronization signal, and sends it to the decoder 15 and the output processing unit. 16 is used for clock control.
  • the partial TLV stream generating units 18A, 18B, and 18C (referred to as the partial TLV stream generating unit 18 if no special distinction is required) extract the structure from the TLV stream and MMT stream separated and obtained in the demultiplexing unit 14
  • the component data and control information data of the selected content (broadcast program) are edited and edited to generate a partial TLV stream.
  • the TLV stream is a stream to which IP information and the like are added to the MMT stream. Therefore, since the MMT stream is included in the TLV stream, hereinafter, the case of showing both is referred to as the MMT/TLV stream.
  • the partial TLV stream uses the partial TS based on the MPEG-2TS method as a reference.
  • the partial TS based on the MPEG-2TS method selects and extracts specific programs and the contents of the program from the transport stream (hereinafter referred to as TS, especially when distinguished from the partial TS) from the transport stream obtained from the broadcast signal.
  • the TS obtained from the component is specified in ARIB-STD-B21.
  • the partial TS based on the MPEG-2TS method is used as a reference to define the partial TLV stream, which is the format of content for advanced broadband digital satellite broadcasting. Part of the TLV flow will be described later. Partial TLV stream is sent from interface 19.
  • the interface 19 may include one or more interfaces.
  • FIG. 2 an example in which interfaces 19A, 19B, and 19C (referred to as interface 19 are not particularly distinguished) is shown.
  • 19A, 19B, and 19C perform the generation and decomposition of frame data corresponding to the respective predetermined communication protocols, and perform transmission and reception via wired or wireless media.
  • the interface 19 may also have encryption and encryption decoding functions such as descrambling.
  • the control unit 110 includes, for example, a CPU, and controls each function of the television receiver 1. For example, the control unit 110 performs connection establishment of external communication via various interfaces including the interface 19, operation control of the partial TLV stream generation unit 18, and the like. In addition, the control unit 110 controls various functions of the television receiving device 1 based on control signals from a user interface 111 such as a remote control included in the television receiving device 1.
  • FIG. 3 is a block diagram showing an example of the functional configuration of an electronic device corresponding to the video and audio playback based on the MMT/TLV method according to the embodiment.
  • the electronic device 2 receives part of the TLV stream sent by the television receiving device 1 through the interface 21.
  • the interface 21 performs transmission and reception with the interface 19 using media such as wired and wireless, and performs generation and decomposition of frame data in accordance with the communication protocol.
  • it has encryption and encryption decoding functions corresponding to the interface 19.
  • the partial TLV stream processing unit 22 processes the received partial TLV stream to obtain component data and SI data.
  • the component data is input to the decoder 23 together with the SI data, converted into service data, and output to the output processing unit 24.
  • the output time, display method, etc. are adjusted in the output processing unit 24, and output as images, audio, text, etc. from the output unit 25 such as a signal display device and a speaker.
  • the SI data output from the partial TLV stream processing unit 22 is input to the information source detection unit 26.
  • the information source detection unit 26 extracts related data (also referred to as reference information) contained in the SI data, and detects the source of the content such as the broadcast operator of the program from the related data.
  • the source of the detected content is input to the output processing unit 24, for example, as necessary, text information related to the source of the content is appropriately superimposed and displayed in the program being played.
  • the logo of the broadcasting operator may be displayed.
  • the correspondence relationship between the related data included in the SI data and the corresponding flag may be preset in the memory or the like of the electronic device 2 and used for display.
  • the corresponding relationship can also be included in the broadcast signal, and the corresponding relationship can be obtained from the broadcast signal received by the television receiver 1 and forwarded to the electronic device 2.
  • the electronic device 2 can receive the broadcast signal, it can be directly You can also get it via the Internet.
  • the related data extracted from the SI data can be stored as record data in a memory, and when connected to the Internet, it can also be output to the outside via the Internet.
  • the control unit 27 includes, for example, a CPU, and performs control of each function of the electronic device 2. For example, the control unit 27 performs connection establishment of external communication via various interfaces including the interface 21 and operation control of the information source detection unit 26. In addition, the control unit 27 controls various functions of the electronic device 2 based on control signals from a user interface 28 such as a remote control included in the electronic device 2.
  • the television receiving apparatus 1 and the electronic device 2 can be regarded as a relationship between a source and a sink (or a server and a client).
  • the television receiver 1 as the source (or server) outputs part of the TLV stream
  • the electronic device 2 as the sink (or client) receives part of the TLV stream output by the source.
  • the user specifies content (program) from the electronic device 2 which is the destination
  • the electronic device 2 obtains the related data contained in the SI data sent from the television receiver 1 which is the source, and makes the content
  • the source is clearly visible.
  • one electronic device 2 for example, electronic device 2A
  • the television receiver 1 the same processing can be performed on other electronic devices 2 (for example, electronic devices 2B, 2C).
  • the interface 19 of the television receiver 1 and the interface 21 of the electronic device 2 establish a communication connection according to a trigger from the electronic device 2.
  • a trigger from the electronic device 2.
  • the television receiving device 1 automatically transmits related data that makes the source of the program clearly visible.
  • FIG. 4 is a flowchart showing an example of processing operations of an electronic device on the server side of the television receiving apparatus corresponding to digital broadcasting based on the MMT/TLV method of the embodiment.
  • the control unit 110 of the television receiver 1 recognizes the specified content (a specific program, components in the program, etc.) of the electronic device 2 transmitted from the electronic device 2 (step S11).
  • the control unit 110 outputs the specified content to the partial TLV stream generation unit 18. If the partial TLV stream generating unit 18 receives the MMT/TLV stream from the demultiplexing unit 14, it extracts from the MMT/TLV stream the component data and associated SI data related to the specified content received from the control unit 110 (step S12 Yes, step S13).
  • the associated data is extracted from the extracted SI data (step S14).
  • three related data are extracted from the SI data.
  • the three related data are described in detail in the description of FIG. 5 and FIG. 6.
  • the television receiving device 1 needs to send the three related data network_id, tlv_stream_id, and service_id to the electronic device 2. Therefore, a partial TLV stream containing three related data is generated (step S15).
  • the partial TLV stream is a content format for advanced broadband digital satellite broadcasting defined with reference to the partial TS based on the MPEG-2 method.
  • the source of a broadcast program can be uniquely determined by network_id, transport_stream_id, and service_id. Therefore, in some TS, usually, as the associated data extracted from the broadcast signal, it also includes network_id, transport_stream_id, and service_id. In some TS, in order to transmit those related data, it is necessary to include control information tables such as PAT and PMT as transmission control information, and SIT as program related information. Transport_stream_id is recorded in PAT, service_id is recorded in PMT, and network_id is recorded in SIT.
  • HD High Definition
  • SD Standard Definition
  • the MH-SIT equivalent to the SIT for inclusion in the partial TLV stream is newly defined, and service_id is described, and then the MH-Network Identification Descriptor (Network Identification Descriptor) placed in the MH-SIT is newly defined.
  • Network Identification Descriptor Network Identification Descriptor placed in the MH-SIT.
  • control information table into which the reference information is put is not only put in one control information table, but is put into a plurality of control information tables separately, so that a plurality of reference information can be processed independently.
  • reference information it is not limited to transmission through the control information table.
  • the MH-SIT is defined by using the partial TS as a reference, and three related data are set in it, so that the communication will not be imposed. Part of the TLV stream is sent with a larger load.
  • FIG. 5 is a diagram showing an example of the configuration of the MH-SIT that is the control information table transmitted through the partial TLV stream in the embodiment.
  • service_id is set in the identifier 51.
  • service_id is a 16-bit field, which serves as a label for identifying the service from other services in the TLV stream.
  • the service identification is equal to the package ID (MMT_package_id_byte) in the MMT package table.
  • the segment syntax indicator is a 1-bit field and is always set to "1".
  • section_length specifies the number of bytes of the section from after this field to the end of the section including the CRC. In order to ensure that the maximum length of the entire segment does not exceed 4096 bytes, the segment length cannot exceed 4093 bytes.
  • This 5-bit field is the version number of the table.
  • the version number is increased by 1.
  • the current follow-up indicator is "1"
  • the version number becomes the version number of the current table.
  • the version number becomes the version number of the next table.
  • This 8-bit field indicates the number of the segment.
  • the segment number is 0x00.
  • This 8-bit field indicates the final segment number.
  • the final segment number is 0x00.
  • This 12-bit field indicates the total number of bytes of the descriptor describing the transmission parameters of the partial TLV stream.
  • This 3-bit field indicates the operation status of the original stream event. This is the running state of the current event of the original stream. If there is no current event in the original stream, the status is considered non-executing.
  • the meaning of the running status value is defined by ARIB STD-B60.
  • the 12-bit field specifies the full byte length of the descriptor loop, which includes the SI related information of the services and events contained in the following partial TLV streams.
  • FIG. 6 is a diagram showing an example of the structure of a descriptor transmitted by a partial TLV stream in this embodiment.
  • network_id is set for identifier 61
  • tlv_stream_id is set for identifier 62.
  • this descriptor is arranged in the descriptor area 52 in FIG. 5.
  • network_id is a 16-bit field, which describes the value of the network identification of the distribution system that has generated part of the TLV stream. In the original distribution system, this value is described in TLV-NIT, and the distribution of the field value is carried out by the designation of the standardization agency.
  • tlv_stream_id shows the identification number of the TLV stream. In the following, the meaning of other descriptors shown in FIG. 6 is shown.
  • This 24-bit field uses the 3-bit alphabetic code specified in ISO3166 to represent the country name. When this descriptor is used, it indicates the country where the distribution system of the partial TLV stream is generated. Each character is coded in 8-bit in accordance with ISO8859-1, and inserted into the 24-bit field in its order.
  • JPN Japanese three-digit letter code
  • the 16-bit field is inserted with a 2-bit letter code, and the 2-bit letter is used to indicate the type of media. In the case of using this descriptor, it indicates the media type of the distribution system that generated part of the TLV stream.
  • Each character is coded with 8 bits in accordance with ISO8859-1 and inserted into the 16-bit field in the order.
  • the types of media are as follows.
  • Network_id It is a 16-bit field that describes the value of the network identification of the distribution system that generates part of the TLV stream. In the original distribution system, the value is described in TLV-NIT, and the distribution of the value of the data field is carried out by the designation of the standardization agency.
  • the partial TLV stream generating unit 18 sets three related data for MH-SIT, and generates SI data for partial TLV streams (hereinafter referred to as partial SI data) including at least MH-SIT. ). Because service_id is included in PLT and MPT, network_id and tlv_stream_id are included in MH-SIT, and at least part of SI data is generated including PLT, MPT, and MH-SIT.
  • the partial TLV stream generating unit 18 generates component data for a partial TLV stream (hereinafter referred to as partial component data) based on the component data of the specified content, and generates a partial TLV stream based on the partial SI data and the partial component data (step S15).
  • service_id, network_id, and tlv_stream_id are described in the defined MH-SIT.
  • the identifier as the related data may be described in the MPT as another control information table.
  • network_id and tlv_stream_id are described in the MH-Network Identification Descriptor.
  • the data field in which tlv_stream_id is described in the MH-Network Identification Descriptor may not be provided instead
  • the choice can be recorded in reserved_future_use(16) of MH-SIT.
  • Part of the TLV stream is sent from the interface 19 (step 16). If the MMT/TLV stream cannot be received from the demultiplexing unit 14, the partial TLV stream generating unit 18 ends the processing (No in step S12).
  • FIG. 7 is a flowchart showing an example of the processing operation of the electronic device on the client side in this embodiment, and the electronic device 2 is used as the electronic device on the client side.
  • the partial TLV stream processing unit 22 of the electronic device 2 receives a partial TLV stream from the interface 21, it performs processing such as demultiplexing on the partial TLV stream and outputs partial component data and partial SI data (Yes in step S21, step S22).
  • processing such as demultiplexing on the partial TLV stream and outputs partial component data and partial SI data (Yes in step S21, step S22).
  • the partial TLV stream processing unit 22 performs descrambling processing (when the partial TLV stream is scrambled and encryption and decoding are required), the decoding Multiplexing processing.
  • the demultiplexing process part of the component data and part of the SI data are obtained from the part of the TLV stream.
  • the partial component data and partial SI data output from the partial TLV stream processing unit 22 are input to the decoder 22, and the decoder 22 is subjected to decoding processing to be converted into service data such as image signals, voice signals, and text data (step 23).
  • the service data is input to the output processing unit 24, the output time, display method, etc. are adjusted (step S24), and output from the output unit 25 such as a display device and a speaker (step S25).
  • the partial SI data output by the partial TLV stream processing unit 22 is input to the information source extraction unit 26, and the information source extraction unit 26 extracts related data from the partial SI data. Specifically, three related data of network_id, tlv_stream_id, and service_id are extracted from part of the SI data.
  • the information source extraction unit 26 determines the application area of the broadcast program in the advanced broadband digital satellite broadcasting based on the extracted three related data, and outputs it to the output processing unit 24 (step S26).
  • the output processing unit 24 adjusts the output time, display method, etc. of the application area information of the broadcast program input from the information source extraction unit 26, and then outputs the service data input from the decoder 23 to the output unit 25 (step S24 ), the output unit 25 outputs the area information of the broadcast program (step S25).
  • the interaction between the electronic devices 2A, 2B, 2C and the television receiver 1 can be performed at the same time.
  • the electronic devices 2A, 2B, 2C can be in the same
  • the same content can be obtained at the same time, and if the electronic devices 2A, 2B, and 2C designate different designated content respectively, then different content can also be obtained.
  • the three related data are included in the three tables of PAT, PMT, and SIT.
  • the three related data are put in MH-SIT. Data, thereby reducing the processing load and increasing the processing speed.
  • the transmission frequency is lower than that of other control information tables such as PLT and MPT. Therefore, it is different from the case where PLT and MPT are included. It also has the effect of reducing the processing load.
  • FIGS 8 to 12 are diagrams showing modified examples of the above-mentioned embodiment. Corresponding parts and similar parts of each module shown in the above-mentioned embodiment are denoted with the same or similar reference numerals.
  • FIG. 8 is a diagram showing an example of a network of advanced broadband digital satellite broadcasting according to Modification 1. It is shown that DIRD10A has the descrambling unit 13, demultiplexing unit 14, decoding unit 15, and output processing unit 16 in FIG. Examples of functions of the partial TLV stream generation unit 18, the interface 19, and the control unit 110.
  • This modified example shows an example of a case where the television receiver 1A is used as the server-side electronic device in the home network, and the smartphone 2BA and the tablet 2CA are used as the client-side electronic device 2.
  • Encryption and decoding functions can also be provided between the television receiver 1A and the respective electronic devices 2BA, 2CA.
  • the television receiving device 1A may be provided with a stream distribution management unit, and when a partial TLV stream is distributed, the stream distribution management unit manages its distribution information (number of distributions, distribution destination, etc.). Furthermore, the management information of the stream distribution management unit may be transferred to the charging management unit.
  • Fig. 9 is a block diagram showing an example of the functional configuration of a television receiving device corresponding to advanced broadband digital satellite broadcasting according to Modification 2. Parts corresponding to the functions of the television receiving device shown in Fig. 2 are marked with the same or similar Reference sign.
  • the demultiplexing unit 14 and the decoder 15 in FIG. 2 respectively correspond to the MMT demultiplexing unit 14A, the image decoding unit, the audio decoding unit, and the EPG multimedia decoder 15A.
  • the image decoding signal obtained from the image decoding unit is supplied to the display of the output unit, and the audio signal output from the audio decoding unit is supplied to the audio system (speaker system) of the output unit.
  • FIG. 10 shows an example of the operation of the television receiver 1A of FIG. 9 based on the control of the control unit 110A.
  • SA11 a signal
  • TV2 the second television receiver 2AA
  • SA12 the processing of the partial TLV stream is started
  • SA00, SA16 Part of the TLV stream is taken out from the MMT demultiplexing unit 14A and prepared, and output to the multiplexing unit 18A (SA00, SA16).
  • the control unit 110A generates reference information (SA13, SA14) as described in FIGS. 5 and 6, and outputs the reference information to the multiplexing unit 18A, and multiplexes it as a partial TLV stream in the multiplexing unit 18A (SA15).
  • SA15 the partial TLV stream in which the MH-SIT including the reference information is multiplexed is transmitted to the television receiver 2B (SA17).
  • the network_id, tlv_stream_id, and service_id used to determine the source can also be inserted and multiplexed in any position and format in some TLV streams.
  • the transmission time can also be changed, and it can also be the transmission start time of the partial TLV stream.
  • FIG. 11 shows a configuration example of a television receiving device 2AA that receives a part of the TLV stream transmitted by the television receiving device 1A in this modification.
  • the functional configuration of the television receiving device 2AA is the same as that of the television receiving device 1A shown in FIG. 9, and the functional modules corresponding to each other are marked with similar reference numerals.
  • the reference numerals 12A, 13A, 14A... of the television receiving device 1A shown in FIG. 12 and the reference numerals of the television receiving device 2AA are described as 2A12, 2A13, 2A14....
  • the partial TLV stream transmitted from the television receiver 1A is input to the demultiplexing unit 2A18 via the interface 21A, and the above-mentioned reference information is analyzed in the control unit 2A110, so that the source of the content of the partial TLV stream becomes clear.
  • the MMT/TLV stream is input to the MMT demultiplexing unit 2A14, and the image coded data and audio coded data of the packet are taken out, and decoded in the image decoding unit and audio decoding unit, respectively.
  • Fig. 12 is a flowchart showing an example of the operation of the television receiver 2AA of Fig. 11. If there is a receiving instruction or receiving request for a part of the TLV stream, the receiving process of the part of the TLV stream is started (SB11, SB12).
  • the control unit 2A110 analyzes the reference information multiplexed in the partial TLV stream, and determines the source of the content multiplexed in the stream (SB13, SB14, SB15). On the other hand, the content multiplexed in the stream is processed in the output processing unit 2A15 and output as data for display and voice output (SB20). If the reception of part of the TLV stream is not stopped, the display of the content multiplexed in the stream is continued. However, if an operation such as shutdown of the receiving device or receiving stop is performed, the above-mentioned operation is stopped (SB21).
  • an example of a case where an MMT/TLV stream is acquired from a broadcast signal received from a tuner is shown.
  • MMT/TLV stream acquired via the Internet.
  • the MMT/TLV stream may be temporarily stored in a storage device (not shown) or the like, and its data may be input to, for example, the demultiplexing unit 14 in FIG. 2 to generate a partial TLV stream.
  • a transmission device including: a receiving unit that receives a broadcast signal using the MMT/TLV method as a content format; a tuner that selects a desired TLV stream from the broadcast signal; and an extraction unit that serves as a control
  • the SI (Signaling Information) of the signal extracts at least the network identifier (network_id), the tlv stream identifier (tlv_stream_id), and the service identifier (service_id) from the SI (Signaling Information); and a part of the TLV stream generation unit, which generates reference information and Part of the TLV stream including the TLV stream selected by the tuner, wherein the reference information includes a network identifier (network_id), a tlv stream identifier (tlv_stream_id), and a service identifier (service_id).
  • a transmission method of a transmission device having: a receiving unit that receives a broadcast signal using an MMT/TLV method as a content format; a tuner that selects a desired TLV stream from the broadcast signal; And the control department, where,
  • At least the network identifier (network_id), the tlv stream identifier (tlv_stream_id), and the service identifier (service_id) are extracted from SI (Signaling Information) as a control signal, and the Output part of the TLV stream including reference information and the TLV stream selected by the tuner, where the reference information includes the network identifier (network_id), the tlv stream identifier (tlv_stream_id), And the service identifier (service_id).
  • (B1) A receiving device, wherein the TLV stream included in a part of the TLV stream corresponds to a TLV stream selected from a broadcast signal using the MMT/TLV method as the content format, a network identifier (network_id), a tlv stream identifier (tlv_stream_id) and service identifier (service_id) are identifiers extracted from the SI included in the broadcast signal as the control signal, and are defined as information for the partial TLV stream included in one table
  • the reference information at least network_id, tlv_stream_id, and service_id used to determine the source are inserted into the reference information, and the partial TLV stream is sent as a stream that includes the reference information and the TLV stream,
  • the receiving device includes:
  • the receiving part which receives the part of the TLV stream, and
  • the determination unit analyzes the network_id, tlv_stream_id, and service_id included in the reference information, and determines the source of the content of the partial TLV stream.
  • (B2) A receiving method for a receiving device, wherein the TLV stream included in a part of the TLV stream corresponds to a TLV stream selected from a broadcast signal that uses the MMT/TLV method as the content format, and the network identifier (network_id), tlv stream
  • the identifier (tlv_stream_id) and the service identifier (service_id) are the identifiers extracted from the SI (Signaling Information: signaling signal) as the control signal included in the broadcast signal, and are used as part of the TLV
  • At least network_id, tlv_stream_id, service_id used to determine the source are inserted into the reference information defined by the information of the stream, and the partial TLV stream is sent as a stream including the reference information and the TLV stream,
  • a receiving device having a receiving unit and a control unit receives the partial TLV stream, and analyzes the network identifier (network_id), the tlv stream identifier (tlv_stream_id), and the service identifier (service_id) included in the reference information , To determine the source of the content of the partial TLV stream.
  • network_id network identifier
  • tlv_stream_id tlv_stream_id
  • service_id service identifier
  • (D) It may also have a mechanism for further outputting the identification data of the source to the display unit when the source of the part of the TLV stream is clarified, and/or it may also have a mechanism for the source of the part of the TLV stream In the case of this, a mechanism that further outputs the unique audio data of the source to the audio output unit.
  • the television receiving device may include a stream distribution management unit that, when the partial TLV stream is distributed, manages its distribution information (number of distributions, distribution destinations, etc.). Furthermore, the management information of the stream distribution management unit may be transferred to the charging management unit.
  • This system includes a mechanism that defines the MH-SIT equivalent to the selection information table (SIT) multiplexed in the broadcast signal using the MMT/TLV method, and transmits and receives the MH-SIT.
  • the MH-SIT is the reference information that includes the network identifier (network_id), tlv stream identifier (tlv_stream_id), and service identifier (service_id), and it can be based on the three identifiers. Judging the information of the source of the content contained in the partial TLV stream.
  • a digital content sending device and sending method which adopts a partial stream content format, so that the area of a broadcast program sent based on the MMT/TLV method is clearly visible.

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Abstract

本申请提供一种数字内容发送装置、发送方法、数字内容接收装置、接收方法，其采用部分流的内容形式使得基于MMT/TLV方式发送的广播节目的区域清晰可见。一实施方式的数字内容发送装置具备接收部、获取分离部、部分流生成部、以及发送部，接收部接收基于MMT/TLV方式发送的发送信号，获取分离部从所述发送信号中获取MMT/TLV流，并且从所述MMT/TLV流中分离与特定的内容相关的组件数据和第1控制信息数据，部分流生成部从所述第1控制信息数据中提取用于得知所述特定的内容的来源的关联数据，并且根据包含所述关联数据而生成的第2控制信息数据和所述组件数据来生成部分流，发送部进行发送。

Description

数字内容发送装置、发送方法、数字内容接收装置、接收方法
本申请要求在2019年6月28日提交日本专利局、申请号为2019-121938、发明名称为“数字内容发送装置、发送方法”的日本专利申请、以及在2019年6月28日提交日本专利局、申请号为2019-121939、发明名称为“数字内容接收装置、接收方法”的日本专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
实施方式涉及数字内容发送装置、发送方法、数字内容接收装置、接收方法。
背景技术
在以往的数字卫星广播及地面数字广播中，作为通过对应电视接收装置的IP接口等高速数字接口来进行输入输出的内容形式，在ARIB－STD－B21中规定了基于MPEG－2TS方式的部分传输流(以下，称为部分TS)的规格。
上述部分TS是从通过电视接收装置接收到的传输流(以下，称为TS)中选择提取特定的节目、节目内的组件(Component)而得到的TS。作为在将上述电视接收装置已接收到的内容向其他电视接收装置、平板电脑终端等外设的电子设备进行传送时的形式(内容形式)而使用该部分TS。
由于这样通过部分TS的收发而在外设的平板电脑终端等中能够利用内容，所以出于著作权保护等目的，为了使得作为部分TS生成的基础的节目在何处被广播这一来源清晰可见，必须将network＿id、transport＿stream＿id、service＿id这些标识符记载在部分TS内。
关于从2018年12月开始的高级宽带数字卫星广播也同样，存在从对应电视接收装置向外设电子设备传送内容的需求。
在先技术文献
专利文献
【非专利文献1】ARIB STD－B21 5.10版“数字广播用接收装置”标准规范
【非专利文献2】ARIB STD－B63 1.7版“高级宽带数字卫星广播用接收装置”标准规范
发明内容
但是，在高级宽带数字卫星广播中，采用基于MMT/TLV方式的新的复用方式，作 为高速数字接口的输入输出内容形式，如果是直接承袭以往的部分TS规定的部分流的规格，则无法在平板电脑终端等外设的电子设备中使广播节目的来源(信息源)清晰可见。
因此，本发明要解决的技术问题是，提供数字内容发送装置、发送方法，其采用部分流的内容形式，使得基于MMT/TLV方式发送的广播节目的来源清晰可见。
本发明一个实施方式的数字内容发送装置具备接收部、获取分离部、部分流生成部、以及发送部，接收部接收基于MMT/TLV方式发送的发送信号，若获取分离部从发送信号获取MMT/TLV流，则从MMT/TLV流中分离与特定的内容相关的组件数据和第1控制信息数据，部分流生成部从第1控制信息数据中提取用于确定特定内容的来源的关联数据，并且根据第2控制信息数据和组件数据而生成部分流，其中，所述第2控制信息数据是通过包含关联数据而生成的，发送部对部分流进行发送。
本发明一个实施方式的数字内容接收装置具备接收部、分离获取部、以及提取部，接收部接收根据发送信号生成的部分流，所述发送信号是基于MMT/TLV方式发送的信号，分离获取部从部分流中分离获取与特定内容相关的组件数据和控制信息数据，提取部从控制信息数据中提取用于确定特定内容的来源的关联数据。
附图说明
图1是示出本实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置和电子设备的例子的图；
图2是示出该实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置的功能构成的一个例子的框图；
图3是示出该实施方式的基于MMT/TLV方式的数字广播对应的电子设备的功能构成的一个例子的框图；
图4是示出作为该实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置的信息源侧的电子设备的处理动作的一个例子的流程图；
图5是示出该实施方式的通过部分TLV流传送的MH－SIT的构成的一个例子的图；
图6是示出该实施方式的通过部分TLV流传送的描述符的构成的一个例子的图；
图7是示出该实施方式的客户端侧的电子设备的处理动作的一个例子的流程图；
图8是示出变形例1的高级宽带数字卫星广播的网络的例子的图；
图9是示出变形例2的高级宽带数字卫星广播的网络中的电视接收装置的功能构成的例子的框图；
图10是示出该变形例的电视接收装置发送部分TLV流时的动作例的流程图；
图11是示出在该变形例中接收部分TLV流的电视接收装置的功能构成例的框图；
图12是示出在该变形例中电视接收装置接收部分TLV流时的动作例的流程图。
附图标记说明
1…电视接收装置，2…电子设备，14…解复用器，18…部分TLV流生成部，19…接口，21…接口，22…部分TLV流处理部，23…解码器，24…输出处理部，25…输出部，26…信息源检测部，27…控制部，28…用户接口，110…控制部。
具体实施方式
以下，参照附图说明实施方式。
(实施方式)
图1是示出本实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置和电子设备的例子的图。
电视接收装置1接收基于MMT/TLV方式的数字广播的广播信号，并获取通过广播信号发送过来的内容。电子设备2A、2B、2C(在不需要特别区别的情况下，称为电子设备2)具有分别能够与电视接收装置1进行通信的接口3A、3B、3C(在不需要特别区别的情况下，称为接口3)，经由接口3获取通过广播信号发送过来的内容，并进行显示输出。另外，在本实施方式中，电子设备2设为3个，但是，根据电视接收装置1具有的接口的不同，能够设为1个以上的任意的数量。
电子设备2具有能够利用基于MMT/TLV方式发送的内容(广播节目)的功能(分辨率、帧速率、其他)。电子设备2例如可以是平板电脑终端、监视器、电视接收装置等。
电视接收装置1和电子设备2的接口3可以是有线方式也可以是无线方式。另外，也可以利用电视接收装置1和电子设备2形成遵照DLNA(注册商标)(Digital Living Network Alliance，数字生活网络联盟)或者其扩展方式的网络，并使其能够通信。另外，只要具有能够与电视接收装置1通信的接口，则也可以将电子设备2设为智能手机。
图2是示出该实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置的功能构成的一个例子的图。
电视接收装置1通过天线11接收基于MMT/TLV方式的数字广播的广播信号，通过调谐部12将广播信号解调从而获取TLV(Type Length Value，类型长度值)形式的数字数据(TLV流)。对于获取到的TLV流，在解扰部13中将加扰数据解扰，在解复用部14中从TLV流转换成IP/UDP流，进一步转换成MMT(Mpeg Media Transport，MPEG媒体传输)流，并分离成组件数据(例如编码后的图像数据、语音数据、文字数据等)和作 为控制信息数据的SI(Signaling Information，信令信息)数据。利用解码器15将组件数据解码成图像信号、语音信号、文字数据等服务数据并播放。将服务数据输入到输出处理部16，调整输出时刻、显示方法等，从显示装置、扬声器等输出部17输出。SI数据是与广播节目相关的信息、与IP数据包的复用相关的控制信息这样的与广播系统相关的控制信息。此外，虽未特别图示，但是在解复用部14中也分离TLV流中以IP/UDP形式存储的NTP形式的时刻信息数据，重制时钟同步信号，并在解码器15、输出处理部16中的时钟控制中进行利用。
部分TLV流生成部18A、18B、18C(在不需要特别区别的情况下，称为部分TLV流生成部18)从在解复用部14中分离获取到的TLV流、MMT流中提取构成被选择的内容(广播节目)的组件数据、控制信息数据，并进行编辑从而生成部分TLV流。TLV流是对MMT流附加了IP信息等的流。因此，由于MMT流被包含在TLV流中，所以，在下文中，将表示两者的情况称为MMT/TLV流。
部分TLV流将基于MPEG－2TS方式的部分TS作为参考。基于MPEG－2TS方式的部分TS是从得自广播信号的传输流(以下，称为TS，尤其在与部分TS进行区别的情况下，称为全TS)中选择提取特定的节目、节目内的组件而得到的TS，在ARIB－STD－B21中规定了规格。
在本实施方式中，将基于MPEG－2TS方式的部分TS作为参考，定义面向高级宽带数字卫星广播的内容的形式即部分TLV流。对于部分TLV流在后描述。从接口19发送部分TLV流。
接口19可以具备1个以上的接口，在图2中，示出了具备接口19A、19B、19C(在不特别进行区别的情况下，称为接口19)的例子。19A、19B、19C进行与分别预先规定的通信协议相应的帧数据的生成及分解，并进行以有线、无线这样的媒介进行的收发。接口19也可以具有解扰等加密及加密解码功能。
控制部110例如包含CPU，实施电视接收装置1的各功能的控制。例如，控制部110实施经由包含接口19在内的各种接口的外部通信的连接确立、部分TLV流生成部18的动作控制等。另外，控制部110根据来自电视接收装置1所具有的遥控器等用户接口111的控制信号，控制电视接收装置1的各功能。
图3是示出该实施方式的基于MMT/TLV方式的图像语音播放对应的电子设备的功能构成的一个例子的框图。
电子设备2通过接口21接收电视接收装置1发送的部分TLV流。接口21利用有线、无线这样的媒介与接口19进行收发，并且进行与通信协议相应的帧数据的生成及分解等。 另外，具有与接口19对应的加密及加密解码功能。
部分TLV流处理部22对接收到的部分TLV流进行处理，得到组件数据、SI数据。组件数据与SI数据一起输入至解码器23，转换成服务数据，输出到输出处理部24。对于服务数据，在输出处理部24中调整输出时刻、显示方法等，从信号显示装置、扬声器等输出部25作为图像、音频、文字等而输出。
另外，从部分TLV流处理部22输出的SI数据输入至信息源检测部26。在信息源检测部26中，提取SI数据中包含的关联数据(也称为参照信息)，从关联数据中检测节目的广播运营商等内容的来源。检测到的内容的来源被输入到输出处理部24，例如根据需要在正在播放的节目中适当地叠加显示与内容的来源相关的文字信息。此外，也可以不显示文字信息，而是例如显示广播运营商的标志(logo)。另外，也可以将SI数据中包含的关联数据与对应的标志之间的对应关系预先设定在电子设备2的存储器等中，并在显示中利用。另外，也可以将该对应关系包含在广播信号中，从电视接收装置1接收到的广播信号获取该对应关系，并转发到电子设备2，在电子设备2能够接收广播信号的情况下，可以直接获取，还可以经由互联网获取。
另外，在信息源检测部26中，能够将从SI数据中提取到的关联数据作为记录数据保存在存储器中，在连接于互联网的情况下，还能够通过互联网输出到外部。
控制部27例如包含CPU，实施电子设备2的各功能的控制。例如，控制部27实施经由包含接口21在内的各种接口的外部通信的连接确立、信息源检测部26的动作控制。另外，控制部27根据来自电子设备2所具有的遥控器等用户接口28的控制信号，控制电子设备2的各功能。
说明本实施方式的系统的动作例。
电视接收装置1与电子设备2可以视为信源与信宿(或者服务器与客户端)的关系。例如，作为信源(或者服务器)的电视接收装置1输出部分TLV流，作为信宿(或者客户端)的电子设备2接收信源输出的部分TLV流。在本实施方式中，示出如下例子：用户从信宿即电子设备2中指定内容(节目)，电子设备2获取从信源即电视接收装置1发送的SI数据中包含的关联数据，并使内容的来源清晰可见。
以下，示出1个电子设备2(例如电子设备2A)和电视接收装置1的处理，但是，对于其他电子设备2(例如电子设备2B、2C)，也能够实施同样的处理。
若用户从电子设备2指定内容(节目)，则根据来自电子设备2的触发，电视接收装置1的接口19与电子设备2的接口21确立通信连接。在本实施方式中，示出如下例子：在指定了内容的情况下，电视接收装置1自动地发送使得节目的来源清晰可见的关联数据。
图4是示出作为该实施方式的基于MMT/TLV方式的数字广播对应的电视接收装置的服务器侧的电子设备的处理动作的一个例子的流程图。
电视接收装置1的控制部110识别从电子设备2发送过来的电子设备2的指定内容(特定的节目、节目内的组件等)(步骤S11)。控制部110将指定内容输出到部分TLV流生成部18。部分TLV流生成部18如果从解复用部14接收了MMT/TLV流，则从MMT/TLV流中提取从控制部110接收到的指定内容所涉及的组件数据及关联SI数据(步骤S12的是、步骤S13)。从提取到的SI数据中提取关联数据(步骤S14)。具体而言，从SI数据中提取作为网络标识符的network＿id、作为tlv流标识符的tlv＿stream＿id、作为服务标识符的service＿id这3个关联数据。对于该3个关联数据，在图5、图6的说明中详细描述。一般而言，根据该3个关联数据，能够唯一地确定基于MMT/TLV方式的数字广播(例如高级宽带数字卫星广播)中的广播节目的所在区域。因此，为了使得从电子设备2清晰可见指定内容所涉及的广播节目的所在区域，需要电视接收装置1将3个关联数据network＿id、tlv＿stream＿id、service＿id发送到电子设备2。因此，生成包含3个关联数据的部分TLV流(步骤S15)。
在此，详细说明部分TLV流。部分TLV流是参考基于MPEG－2方式的部分TS而定义的面向高级宽带数字卫星广播的内容的形式。
通常，从以TS方式复用至少1个HD(High Definition：高清晰度)或者SD(Standard Definition：标准清晰度)的节目的广播信号中选择提取特定的节目、节目内的组件，从而得到部分TS。在TS方式中，通常，也能够通过network＿id和transport＿stream＿id、service＿id唯一地确定广播节目的来源。因此，在部分TS中，通常，作为从广播信号提取到的关联数据，也包括network＿id和transport＿stream＿id、service＿id。在部分TS中，为了发送那些关联数据，必须包括作为传送控制信息的PAT、PMT、还有作为节目关联信息的SIT这样的控制信息表。transport＿stream＿id被记载在PAT中，service＿id被记载在PMT中，network＿id被记载在SIT中。
但是，在MMT/TLV流中，虽然在规定上存在相当于PAT的PLT、相当于PMT的MPT，但是，不存在相当于SIT的控制信息表。另外，虽然设想在部分TLV流中必须使用PLT、MPT，但是在PLT、MPT中仅存在service＿id的域(field)。
因此，在本实施方式中，新定义了用于包含在部分TLV流中的相当于SIT的MH－SIT，并记述service＿id，进而在配置在MH－SIT内的MH－网络识别描述符(Network identification descriptor)中设定network＿id、tlv＿stream＿id。因此，仅通过MH－SIT就能够设定能够唯一地判断服务数据(节目)来源的参照信息即network＿id、tlv＿stream＿ id、service＿id。此外，也可以是，放入参照信息的控制信息表并非仅放入到1个控制信息表内，而是通过分开地放入到多个控制信息表中从而能够独立地处理多个参照信息。另外，只要能够发送参照信息，则不限于通过控制信息表格来发送。
因为在部分TS中定义的SIT的发送频率较小而且通信负荷也较小，所以通过以部分TS为参考来定义MH－SIT，并在其中设定3个关联数据，从而能够不会给通信施加较大的负荷地发送部分TLV流。
图5是示出该实施方式的通过部分TLV流来传送的控制信息表即MH－SIT的构成的一个例子的图。在图5中，在标识符51中设定service＿id。
service＿id为16比特字段，发挥用于从TLV流内的其他服务中识别该服务的标签的作用。服务识别等于MMT包表内的包ID(MMT＿package＿id＿byte)。
在下文中，示出图5所示的其他标识符的含义。
·section＿syntax＿indicator(分段语法指示符)
分段语法指示符为1比特的字段，始终设为“1”。
·section＿length(分段长度)
其设为12比特字段。section＿length规定从该字段之后起到包含CRC在内的分段的最后为止的分段的字节数。为了使得全段长度最大不会超过4096字节，分段长度不可以超过4093字节。
·version＿number(版本编号)
该5比特字段是表的版本编号。在表内的信息有了变化的情况下，将版本编号加1。在其值变成了31的情况下，返回到0。在当前后续指示符为“1”的情况下，版本编号变成现在的表的版本编号。在当前后续指示符为“0”的情况下，版本编号变成下一个表的版本编号。
·current＿next＿indicator(当前后续指示符)
在该1比特的指示符为“1”的情况下，表示表为现在的表，在“0”的情况下，表示被传送的表尚未应用，作为下一个表而使用。
·section＿number(分段编号)
该8比特字段表示分段的编号。分段编号为0x00。
·last＿section＿number(最终分段编号)
该8比特字段表示最终的分段编号。最终分段编号为0x00。
·transmission＿info＿loop＿length(传送信息循环长度)
该12比特字段表示对部分TLV流的传送参数进行记述的描述符的全字节数。
·running＿status(运行状态)
该3比特字段表示原来的流的事件的运行状态。这是原来的流的现在的事件的运行状态。如果在原来的流中不存在现在的事件，则认为状态是非执行中。运行状态的值的含义通过ARIB STD－B60来定义。
·service＿loop＿length(服务循环长度)
该12比特字段规定描述符循环的全字节长度，该描述符循环包括以下接续的部分TLV流所包含的服务和事件的SI关联信息。
·CRC＿32(CRC)
遵照ITU－T建议H.222.0。
图6是示出该实施方式的通过部分TLV流传送的描述符的构成的一个例子的图。
作为MH－网络识别描述符进行定义，在该描述符中对标识符61设定network＿id，对标识符62设定tlv＿stream＿id。另外，该描述符配置在图5的描述符区域52。
network＿id为16比特的域，记述生成了部分TLV流的分配系统的网络识别的值。在原始的分配系统中，该值被记述于TLV－NIT，该字段值的分配是通过标准化机构的指定而进行的。
tlv＿stream＿id示出该TLV流的识别编号。在下文中，示出图6所示的其它描述符的含义。
·country＿code(国家码)
该24比特的字段使用ISO3166中规定的3位字母编码来表示国名。在使用该描述符的情况下，表示生成了部分TLV流的分配系统的国家。将各文字遵照ISO8859－1以8比特编码，按其顺序插入到24比特字段。日本的3位字母编码为“JPN”，如下这样编码。
“0100 1010 0101 0000 0100 1110”
·media＿type(媒体类别)
该16比特的域插入有2位字母编码，利用该2位字母表示媒体的类型。在使用该描述符的情况下，表示生成了部分TLV流的分配系统的媒体类型。将各文字遵照ISO8859－1以8比特编码，按其顺序插入到16比特字段。媒体的种类如下文。
(值、含义)：(0x4142、高度BS/高级宽带CS)
·network＿id(网络识别)：其为16比特的域，记述生成部分TLV流的分配系统的网络识别的值。在原始的分配系统中，在TLV－NIT中记述了该值，其数据域的值的分配是通过标准化机构的指定而进行的。
·private＿data(私有数据)
其为8×N比特的字段，具有个别地定义的值。
返回到图4的步骤S15，部分TLV流生成部18在对MH－SIT设定了3个关联数据之后，至少包含MH－SIT而生成面向部分TLV流的SI数据(以下，称为部分SI数据)。因为在PLT、MPT中包含service＿id，所以在MH－SIT中包含network＿id、tlv＿stream＿id，至少包含PLT、MPT、MH－SIT地生成部分SI数据。
部分TLV流生成部18根据指定内容的组件数据而生成面向部分TLV流的组件数据(以下，称为部分组件数据)，并且根据部分SI数据和部分组件数据而生成部分TLV流(步骤S15)。
此外，在本实施方式中，示出了在定义的MH－SIT中记载service＿id、network＿id、tlv＿stream＿id的例子，但是，也可以将作为关联数据的标识符记载在作为其他控制信息表的MPT中。
另外，在本实施方式中，示出了在MH－网络识别描述符中记载network＿id、tlv＿stream＿id的例子，但是，例如也可以不设置将tlv＿stream＿id记载在MH－网络识别描述符中的数据域，作为替代选择，可以记载在MH－SIT的reserved＿future＿use(16)中。
从接口19发送部分TLV流(步骤16)。如果无法从解复用部14接收MMT/TLV流，则部分TLV流生成部18结束处理(步骤S12的否)。
图7是示出该实施方式的客户端侧的电子设备的处理动作的一个例子的流程图，将电子设备2作为客户端侧的电子设备。
电子设备2的部分TLV流处理部22若从接口21接收到部分TLV流，则对部分TLV流实施解复用等处理并输出部分组件数据、部分SI数据(步骤S21的是、步骤S22)。例如，在步骤22中，与电视接收装置1接收MMT/TLV流的情况同样地，部分TLV流处理部22实施解扰处理(对部分TLV流实施扰频处理而需要加密解码的情况)、解复用处理。在解复用处理中，从部分TLV流获取部分组件数据、部分SI数据。从部分TLV流处理部22输出的部分组件数据、部分SI数据输入到解码器22，在解码器22中实施解码处理，从而转换成图像信号、语音信号、文字数据等服务数据(步骤23)。服务数据输入到输出处理部24，调整输出时刻、显示方法等(步骤S24)，从显示装置、扬声器等输出部25输出(步骤S25)。
另一方面，在步骤22中，部分TLV流处理部22输出的部分SI数据输入到信息源提取部26，信息源提取部26从部分SI数据中提取关联数据。具体而言，从部分SI数据中提取network＿id、tlv＿stream＿id、service＿id这3个关联数据。信息源提取部26根据提取到的3个关联数据，例如确定高级宽带数字卫星广播中的广播节目的应用区域，并向输 出处理部24输出(步骤S26)。输出处理部24在对从信息源提取部26输入的广播节目的应用区域信息的输出时刻、显示方法等进行了调整后，连同从解码器23输入的服务数据一起向输出部25输出(步骤S24)，输出部25输出广播节目的区域信息(步骤S25)。
通过按照每个电子设备2A、2B、2C并列地实施上述的处理，从而能够同时进行电子设备2A、2B、2C与电视接收装置1之间的交互，例如电子设备2A、2B、2C能够在相同的时间得到相同的内容，如果从电子设备2A、2B、2C指定各自不同的指定内容，则还能够得到各自不同的内容。
在本实施方式中，通过将如图5、图6所示那样定义的MH－SIT和MH－网络识别描述符包含在部分TLV流中，从而能够判断客户端侧即电子设备2接收到的内容的来源。
另外，在基于TS方式的部分TS流中，在PAT、PMT、SIT这3个表中包含3个关联数据，但是，在本实施方式的例子中，通过在MH－SIT中放入3个关联数据，从而处理负荷降低，处理速度提高。另外，与部分TS流中的SIT同样地，在MH－SIT的特性上，与其他的PLT、MPT这种控制信息表相比发送频率更小，因此，与放入了PLT、MPT的情况相比，也具有处理负荷降低的效果。
这样，根据本实施方式，能够提供采用如下部分流的内容形式的数字内容发送装置、发送方法，该部分流的内容形式使得基于MMT/TLV方式而发送的广播节目的应用区域清晰可见。
(变形例1)
图8到图12是示出上述的实施方式的变形例的图，对于在上述实施方式中示出的各模块的对应部分、类似部分，标注了相同或类似的附图标记。
图8是示出变形例1的高级宽带数字卫星广播的网络的例子的图，示出了DIRD10A具有图1中的解扰部13、解复用部14、解码部15、输出处理部16、部分TLV流生成部18、接口19、控制部110的功能的例子。该变形例示出了如下情况的例子：在家庭内网络，将电视接收装置1A作为服务器侧电子设备，另外，将智能手机2BA、平板电脑2CA作为客户端侧的电子设备2。
在电视接收装置1A与各电子设备2BA、2CA之间也可以设置加密、解码功能。另外，在电视接收装置1A中也可以具备流分发管理部，在分发了部分TLV流的情况下，该流分发管理部管理其分发信息(分发次数、分发目的地等)。进一步，也可以将该流分发管理部的管理信息向收费管理部传递。
(变形例2)
图9是示出变形例2的高级宽带数字卫星广播对应的电视接收装置的功能构成的一个 例子的框图，对于与图2所示的电视接收装置的功能对应的部位，标注了相同或类似的附图标记。
在图9的电视接收装置1A中，示出了将相当于图2的部分TLV流生成部18的功能分开为控制部110A、复用部18的例子。另外，图2的解复用部14、解码器15分别对应于MMT复用分离部14A、图像解码部、音频解码部、EPG多媒体解码器15A。从图像解码部得到的图像解码信号供给至输出部的显示器，从音频解码部输出的音频信号供给至输出部的音频系统(扬声器系统)。
图10是示出图9的电视接收装置1A基于控制部110A的控制进行动作的动作例子。若从第2电视接收装置2AA(TV2)中检测到请求部分流的信号(SA11)，则开始部分TLV流的处理(SA12)。从MMT复用分离部14A取出并准备部分TLV流，输出到复用部18A(SA00、SA16)。
控制部110A生成图5、图6中说明的那样的参照信息(SA13、SA14)，并向复用部18A输出参照信息，在复用部18A中作为部分TLV流进行复用(SA15)。由此，将复用了包含参照信息在内的MH－SIT的部分TLV流向电视接收装置2B传送(SA17)。
此外，也可以将用于判断来源的network＿id、tlv＿stream＿id、service＿id在部分TLV流中以任何位置、格式插入复用。另外，也能够改变发送的时刻，也可以是部分TLV流的发送开始时刻。
图11示出了在该变形例中对电视接收装置1A传送的部分TLV流进行接收的电视接收装置2AA的构成例。
该电视接收装置2AA的功能构成是与图9所示电视接收装置1A相同的功能构成，对于相互对应的功能模块，标注了类似的附图标记。对于图12所示的电视接收装置1A的附图标记12A、13A、14A……，电视接收装置2AA的附图标记记载为2A12、2A13、2A14……。从电视接收装置1A传送过来的部分TLV流经由接口21A输入到复用分离部2A18，并在控制部2A110中解析上述的参照信息，从而部分TLV流的内容的来源变清楚。MMT/TLV流输入到MMT复用分离部2A14，取出数据包的图像编码数据、音频编码数据，分别在图像解码部、音频解码部中解码。
图12是示出图11的电视接收装置2AA的动作例的流程图。若存在部分TLV流的接收指令或接收请求，则开始部分TLV流的接收处理(SB11、SB12)。在控制部2A110中对部分TLV流中复用的参照信息进行解析，并判断该流中复用的内容的来源(SB13、SB14、SB15)。另一方面，在输出处理部2A15中对该流中复用的内容进行处理，作为用于显示、语音输出的数据而输出(SB20)。如果没有部分TLV流的接收停止，则继续进行该流中 复用的内容的显示。但是，若进行了接收装置的关停或者接收停止等操作，则停止上述的动作(SB21)。
以上，根据本变形例，能够提供一种数字内容发送装置、发送方法，其对于在提供内容的服务器侧中不同的功能构成、不同的客户端侧的信息终端，采用使得基于MMT/TLV方式发送的广播节目的区域清晰可见的部分流的内容形式。
另外，在以上的实施方式及变形例中，示出了利用从调谐器接收到的广播信号中获取到MMT/TLV流的情况的例子，但是，例如也可以使用基于经由互联网获取到的MMT/TLV方式的MMT/TLV流。另外，也可以暂时将MMT/TLV流保存在未图示的存储装置等中，将其数据例如输入到图2的解复用部14，生成部分TLV流。
上述的本系统中的要点还能够如下这样记载。
(A1)一种发送装置，具备：接收部，其接收采用MMT/TLV方式作为内容形式的广播信号；调谐器，其从所述广播信号中选择期望的TLV流；提取部，其从作为控制信号的SI(Signaling Information：信令信息)中至少提取网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)；以及部分TLV流生成部，其生成包含参照信息和由所述调谐器选择出的所述TLV流在内的部分TLV流，其中，所述参照信息包含网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)。
(A2)一种发送装置的发送方法，所述发送装置具有：接收部，其接收采用MMT/TLV方式作为内容形式的广播信号；调谐器，其从所述广播信号中选择期望的TLV流；以及控制部，其中，
基于所述控制部的控制，从作为控制信号的SI(Signaling Information：信令信息)中至少提取网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)，生成并输出包含参照信息和由所述调谐器选择出的所述TLV流在内的部分TLV流，其中，所述参照信息包含所述网络标识符(network＿id)、所述tlv流标识符(tlv＿stream＿id)、及所述服务标识符(service＿id)。
(B1)一种接收装置，部分TLV流中包含的所述TLV流与从采用MMT/TLV方式作为内容形式的广播信号中选择出的TLV流对应，网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)为从所述广播信号中包含的作为控制信号的SI中提取出的标识符，在1个表中包含作为用于所述部分TLV流的信息而定义的参照信息，在参照信息内插入有至少用于判断来源的network＿id、tlv＿stream＿id、service＿id，所述部分TLV流作为包含所述参照信息及所述TLV流在内的流进行发送，
所述接收装置具备：
接收部，其接收所述部分TLV流，以及
判定部，其对所述参照信息中包含的network＿id、tlv＿stream＿id、service＿id进行解析，判定所述部分TLV流的内容的来源。
(B2)一种接收装置的接收方法，部分TLV流中包含的所述TLV流与从采用MMT/TLV方式作为内容形式的广播信号中选择的TLV流对应，网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)为从所述广播信号中包含的作为控制信号的SI(Signaling Information：信令信号)中提取出的标识符，在作为用于所述部分TLV流的信息而定义的参照信息内插入有至少用于判断来源的network＿id、tlv＿stream＿id、service＿id，所述部分TLV流作为包含所述参照信息及所述TLV流在内的流进行发送，
具有接收部和控制部的接收装置接收所述部分TLV流，解析所述参照信息中包含的所述网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及所述服务标识符(service＿id)，判定所述部分TLV流的内容的来源。
(C)也可以在发送侧与接收侧之间，设置有用于安全的加密、解码功能。
(D)也可以具有在明确了所述部分TLV流的来源的情况下，进一步将该来源的标识数据输出到显示部的机构，并且/或者也可以具有在明确了所述部分TLV流的来源的情况下，进一步将该来源的特有的音频数据输出到音频输出部的机构。
(E)电视接收装置也可以具备流分发管理部，所述流分发管理部在分发了所述部分TLV流的情况下，对其分发信息(分发次数、分发目的地等)进行管理。进一步，也可以将该流分发管理部的管理信息向收费管理部传递。
(E1)在本系统中，包含如下机构，该机构定义与在采用MMT/TLV方式的广播信号中复用的选择信息表(SIT)相当的MH－SIT，并且收发该MH－SIT。
在此，MH－SIT是将所述网络标识符(network＿id)、tlv流标识符(tlv＿stream＿id)、及服务标识符(service＿id)均包含在内的参照信息，是能够根据所述3个标识符来判断所述部分TLV流中包含的内容的来源的信息。
根据以上所述的至少1个实施方式，能够提供数字内容发送装置、发送方法，其采用部分流的内容形式，使得基于MMT/TLV方式发送的广播节目的区域清晰可见。
说明了本发明的若干个实施方式，但是，这些实施方式是作为例子而示出的，并不意图限定本申请所附权利要求的范围。这些新的实施方式能够以除此以外的各种各样的形态来实施，在不脱离本申请的主旨的范围内能够进行各种省略、替换、变更。这些实施方式、 其变形被包含于发明的范围、主旨，并且被包含于权利要求书所记载的发明及其等同的范围。进而，在权利要求的各构成要素中，即使将构成要素分割而表达的情况、或者组合多个而表达的情况、或者将它们组合而表达的情况，也是本发明的范畴。另外，可以组合多个实施方式，通过该组合而构成的实施例也是发明的范畴。
另外，对于附图，为了使得说明更清楚，有的情况下与实际的形态相比，示意性地表示了各部的宽度、厚度、形状等。另外，即使是将权利要求表达为控制逻辑的情况、表达为包含使计算机执行的指令的程序的情况、以及表达为记载有上述指令的计算机可读取的非易失性存储介质的情况，也是应用了本发明的装置的情况。另外，对于使用的名称、用语没有限定，即使是其他表达，只要是实质上相同的内容、相同的主旨，则也包含在本申请所附权利要求的范围内。

Claims (14)

  1. 一种数字内容发送装置，其具备：
    接收部，其接收基于MMT/TLV方式发送的发送信号；
    获取分离部，其从所述发送信号中获取MMT/TLV流，并且从所述MMT/TLV流中分离与特定的内容相关的组件数据和第1控制信息数据；
    部分流生成部，其为了确定所述特定的内容的来源而从所述第1控制信息数据中提取关联数据，并且根据第2控制信息数据和所述组件数据而生成部分流，其中，所述第2控制信息数据是包含所述关联数据而生成的；以及
    发送部，其发送所述部分流。
  2. 根据权利要求1所述的数字内容发送装置，其中，
    所述关联数据至少包含network＿id、tlv＿stream＿id和service＿id。
  3. 根据权利要求2所述的数字内容发送装置，其中，
    所述关联数据记载在1个控制信息表中。
  4. 根据权利要求3所述的数字内容发送装置，其中，
    所述控制信息表是以ARIB STD－B21中规定的SIT即选择信息表为基础的MH－SIT。
  5. 根据权利要求4所述的数字内容发送装置，其中，
    所述关联数据的至少1个是记载在所述控制信息表内的MH－网络识别描述符，其中，所述MH－网络识别描述符以ARIB STD－B21中规定的网络识别描述符为基础。
  6. 根据权利要求1至4中任一项所述的数字内容发送装置，其中，
    从外部指定所述特定的内容。
  7. 一种数字内容发送方法，包括：
    接收基于MMT/TLV方式发送的发送信号，
    从所述发送信号中获取MMT/TLV流，
    从所述MMT/TLV流中分离与特定的内容相关的组件数据和第1控制信息数据，
    从所述第1控制信息数据中提取用于确定所述特定的内容的来源的关联数据，
    根据包含所述关联数据而生成的第2控制信息数据和所述组件数据而生成部分流，发送所述部分流。
  8. 一种数字内容接收装置，其具备：
    接收部，其接收根据发送信号生成的部分流，所述发送信号是基于MMT/TLV方式发送的信号；
    分离获取部，其从所述部分流中分离获取与特定的内容相关的组件数据和控制信息数 据；以及
    提取部，其从所述控制信息数据中提取用于得知所述特定的内容的来源的关联数据。
  9. 根据权利要求8所述的数字内容接收装置，其中，
    所述关联数据至少包含network＿id、tlv＿stream＿id和service＿id。
  10. 根据权利要求9所述的数字内容接收装置，其中，
    所述关联数据记载在1个控制信息表中。
  11. 根据权利要求10所述的数字内容接收装置，其中，
    所述控制信息表是以ARIB STD－B21中规定的SIT即选择信息表为基础的MH－SIT。
  12. 根据权利要求11所述的数字内容接收装置，其中，
    所述关联数据的至少1个是记载在所述控制信息表内的MH－网络识别描述符，其中所述MH－网络识别描述符以ARIB STD－B21中规定的网络识别描述符为基础。
  13. 根据权利要求8至11中任一项所述的数字内容接收装置，其中，
    所述数字内容接收装置指定所述特定的内容。
  14. 一种数字内容接收方法，包括：
    接收根据发送信号生成的部分流，所述发送信号是基于MMT/TLV方式发送的信号，
    从所述部分流中分离获取与特定的内容相关的组件数据和控制信息数据，
    从所述控制信息数据中提取用于得知所述特定的内容的来源的关联数据。
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