JP2016006953A - Receiving device, transmitting device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a broadcast station side which broadcasts a broadcast content to control whether to permit remote viewing of the broadcast content by a receiving device.SOLUTION: The receiving device comprises: a demultiplexing unit which demultiplexes a broadcast wave obtained by multiplexing a descriptor containing remote viewing propriety information indicating whether or not to permit remote viewing of a content transmitted by the broadcast wave; and an extractor which extracts the remote viewing propriety information contained in the descriptor demultiplexed by the demultiplexing unit.

Description

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

  In the ultra-high-definition television broadcasting system, 4K video or 8K video with higher resolution than high-definition video (2K video) is broadcast. Non-Patent Document 1 defines the operation at a broadcasting station and the functional specifications of a broadcast receiver in the current digital terrestrial television broadcasting. Non-Patent Document 2 defines the operation at the broadcasting station and the functional specifications of the broadcasting receiver in the current BS / broadband CS digital broadcasting.

“Digital Terrestrial Television Broadcasting Operation Regulations”, ARIB TR-B14, 5.5 edition, revised by the Japan Radio Industry Association, March 18, 2014. “BS / Broadband CS Digital Broadcasting Operation Regulations”, ARIB TR-B15, 6.4 edition, Radio Industry Association, revised on March 18, 2014.

  In the ultra-high definition television broadcasting system, there is a possibility that the broadcast content is output to another receiving device connected to the communication network via an IP interface built in the receiving device. Note that the IP interface output of this broadcast content is not limited to the case of an ultra-high definition television broadcast system. In February 2014, the Next Generation Broadcasting Promotion Forum (NexTV-F) made it possible to remotely view broadcast content being selected by a digital broadcast receiver outside the home via a communication network. "Remote viewing requirement Ver1.0" has been formulated. However, depending on the broadcast station and broadcast content, there is a case where it is not desired to permit IP interface output from the viewpoint of content protection. However, according to the current broadcast operation regulations shown in Non-Patent Document 1 or Non-Patent Document 2, it is difficult to allow the broadcast station to control whether or not the receiving device permits the output of the broadcast content IP interface. there were.

  The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible for a receiving station to control whether or not to permit remote viewing of broadcast content on the broadcast station side that broadcasts the broadcast content. One.

  In order to solve the above-described problem, an aspect of the present invention provides the broadcast wave in which a descriptor in which remote viewing availability information indicating whether or not to permit remote viewing of content transmitted by a broadcast wave is permitted is multiplexed. And a demultiplexing unit that demultiplexes the remote viewing availability information described in the descriptor separated by the demultiplexing unit.

  According to another aspect of the present invention, the receiving device includes an output control unit that controls whether to output the content to a communication network based on the remote viewing availability information extracted by the extraction unit. It is characterized by that.

  In addition, according to one aspect of the present invention, there is provided a multiplexing unit that multiplexes a descriptor in which remote viewing permission / inhibition information indicating whether or not to permit remote viewing of content transmitted by broadcast waves and the content are included, and the multiplexing A transmission apparatus comprising: a transmission unit that transmits the content multiplexed by the conversion unit and the descriptor as the broadcast wave.

  According to another aspect of the present invention, a broadcast wave in which a descriptor in which remote viewing permission / inhibition information indicating whether or not to permit remote viewing of content transmitted by a broadcast wave is permitted is separated from a computer is separated. And a step of extracting the remote viewing availability information described in the separated descriptor.

  ADVANTAGE OF THE INVENTION According to this invention, it can be made controllable by the broadcast station side which broadcasts the said broadcast content whether the IP interface output of broadcast content is permitted in a receiver.

It is a schematic block diagram which shows an example of a structure of the broadcast system by this embodiment. It is a figure which shows an example of the IP interface output control descriptor by this embodiment. It is a flowchart which shows an example of the IP interface output control process by this embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic block diagram showing an example of the configuration of a broadcast system 1 according to an embodiment of the present invention.

  The broadcast system 1 is a television broadcast system such as terrestrial analog broadcast, terrestrial digital broadcast, satellite broadcast (BS analog, BS digital, 110 degree CS, CS digital, etc.), cable television (CATV), and the like. Here, description will be made assuming that the broadcasting system 1 is an ultra-high-definition television broadcasting system that supports 4K video and 8K video with higher resolution than high-definition video (2K video). Note that 2K video, 4K video, and 8K video are expressions based on the number of pixels in the horizontal direction of the video.

  The illustrated broadcast system 1 includes a transmission device 10 installed in a broadcast station established by a broadcaster and a reception device 20 that receives a broadcast wave transmitted from the transmission device 10. The transmission device 10 includes a multiplexing unit 11, a descriptor information generation unit 12, and a transmission unit 13.

  The multiplexing unit 11 multiplexes video content, audio content, and data, and outputs the multiplexed broadcast data to the transmission unit 13. The data includes various types of information such as subtitles and text information, information on broadcasting stations and programs, encryption information, and restriction information on contents.

  The descriptor information generation unit 12 generates a descriptor included in various information multiplexed by the multiplexing unit 11. For example, the descriptor information generation unit 12 generates an IP interface output control descriptor (ip_output_mode). The IP interface output control descriptor is information indicating whether or not to permit content (broadcast content) transmitted by broadcast waves to be output to a communication network via an IP (Internet Protocol) interface built in the receiving device ( Hereinafter, this descriptor is also referred to as IP output availability information). In other words, the IP interface output control descriptor is, in other words, a remote viewing control descriptor (remote_view_mode) that describes whether or not remote viewing of content (broadcast content) transmitted by broadcast waves is permitted. ).

  The IP output permission information described in the IP interface output control descriptor is determined, for example, for each channel (service) or each broadcast content by the broadcast content provider. The descriptor information generation unit 12 outputs the generated IP interface output control descriptor to the multiplexing unit 11. As a result, the multiplexing unit 11 outputs broadcast data in which the IP interface output control descriptor is multiplexed to the transmission unit 13.

  FIG. 2 is a diagram illustrating an example of an IP interface output control descriptor according to the present embodiment. Here, when the IP interface output of broadcast content is permitted, “0” is described in the IP interface output control descriptor as the IP output permission information. On the other hand, when IP output of broadcast content is prohibited, “1” is described as IP output permission information in the IP interface output control descriptor. An arrangement example of the IP interface output control descriptor in the broadcast data will be described later.

  Returning to FIG. 1, the transmission unit 13 transmits broadcast data multiplexed by the multiplexing unit 11 (that is, broadcast data including broadcast content (video content, audio content, and data)) as a broadcast wave. The broadcast wave may be any broadcast wave such as terrestrial analog broadcast, terrestrial digital broadcast, satellite broadcast (BS analog, BS digital, 110 degree CS, CS digital, etc.), cable television (CATV), and the like.

  The receiving device 20 is an electronic device having a function of receiving broadcast waves. For example, the receiving device 20 is a television, a mobile phone, a smart phone, a tablet terminal device, a personal computer, or the like, and receives broadcast content transmitted from the transmitting device 10 by a broadcast wave. The receiving device 20 may be configured to include a display unit that displays received broadcast content, or may not include a display unit such as a recorder that has a function of receiving broadcast waves. There may be. The receiving device 20 may be an IP interface device that converts the format of broadcast content transmitted by broadcast waves and transmits it to a communication network.

The illustrated receiving device 20 includes a receiving unit 21, a demultiplexing unit 22, an extracting unit 23, an output control unit 24, a format conversion unit 25, and an output unit 26.
The receiving unit 21 receives the broadcast wave transmitted from the transmission device 10 and outputs broadcast data demodulated from the broadcast wave of the selected channel to the demultiplexing unit 22.
The demultiplexing unit 22 demultiplexes video content, audio content, and data from the broadcast data output from the receiving unit 21. The demultiplexing unit 22 outputs the separated video content, audio content, and data to the output control unit 24.

  The extraction unit 23 extracts the IP output permission information described in the IP interface output control descriptor from the data separated by the demultiplexing unit 22. Further, the extraction unit 23 outputs the extracted IP output permission information to the output control unit 24.

  The output control unit 24 controls whether or not the broadcast content is output to the communication network via the IP interface based on the IP output permission information extracted by the extraction unit 23. For example, when the IP output permission information is “0” (IP interface output is permitted), the output control unit 24 outputs the video content, audio content, and data separated by the demultiplexing unit 22 to the format conversion unit 25. To do. On the other hand, when the IP output permission information is “1” (IP interface output is prohibited), the output control unit 24 outputs the video content, audio content, and data separated by the demultiplexing unit 22 to the format conversion unit 25. do not do.

  The format conversion unit 25 converts the video content, audio content, and data output from the output control unit 24 into a format that complies with the standard for output to the communication network. For example, the format conversion unit 25 converts video content, audio content, and data into an IP packet transmission format and converts them into IP packets.

  The output unit 26 is connected to a communication network as an IP interface. Here, the communication network is an information communication network configured by the Internet, a WAN (Wide Area Network), a LAN (Local Area Network), or a combination thereof. The WAN includes, for example, a mobile phone network, a PHS (Personal Handy-phone System) network, a PSTN (Public Switched Telephone Network), a dedicated communication line network, and a VPN (Virtual Private Network).

  The output unit 26 outputs the video content, the audio content, and the data (that is, the broadcast content converted into the IP packet) converted into the IP packet by the format conversion unit 25 to the connected communication network. For example, the output unit 26 outputs broadcast content that has been converted into IP packets to a LAN (wired LAN or wireless LAN) configured in the home. Further, the output unit 26 may output the broadcast content in the form of IP packets to the Internet connected via this LAN.

(IP interface output control descriptor allocation example)
Here, an example of arrangement of IP interface output control descriptors in multiplexed broadcast data will be described. In the following description, first, (1) an arrangement example in the case of ultra-high definition television broadcasting will be described. The IP interface output control processing according to the present embodiment can also be applied to television broadcasts other than ultra-high-definition television broadcasts. Next, (2) terrestrial digital television broadcasts or BS / broadband CS digital broadcasts An example of the arrangement will be described.

(1) In the case of ultra-high-definition television broadcasting In ultra-high-definition television broadcasting, MMT (MPEG Media that stores and transmits video content and audio content in MFU (Media Fragment Unit) or MPU (Media Processing Unit). The standardization of Transport is under consideration.

  The MMT-SI, which is a transmission control signal indicating the configuration of the MMT package, is configured in three layers: a “message” including a table and a descriptor, a “table” including the descriptor, and a “descriptor”. . The “message” of MMT-SI includes a PA (Package Access) message and an M2 section message.

For example, the IP interface output control descriptor is arranged in a first loop of MPT (MMT Package Table) included in the PA message. Note that the IP interface output control descriptor may be arranged in the second loop of the MPT included in the PA message. The IP interface output control descriptor may be arranged in a MH-SDT (Service Description Table) included in the M2 section message. Further, the IP interface output control descriptor may be arranged in an MH-EIT (Event Information Table) included in the M2 section message.
That is, the IP interface output control descriptor is, for example, arranged in all or any (one or more) of the four tables of MPT (first loop), MPT (second loop), SDT, and EIT. .

(2) In the case of terrestrial digital television broadcast or BS / broadband CS digital broadcast In terrestrial digital television broadcast or BS / broadband CS digital broadcast, MPEG-2 TS (Transport Stream) is standardized. The TS is composed of a plurality of TS packets, and stores a PES (Packetized Elementary Stream) storing video content and audio content, and a section storing PSI (Program Specific Information) and SI information.

  PSI includes PAT (Program Association Table), PMT (Program Map Table), CAT (Conditional Access Time), and the like. The SI includes a service description table (SDT), an event information table (EID), a time date table (TDT), a time offset table (TOT), and the like. For example, the IP interface output control descriptor is arranged in all or any (one or more) of four tables of PMT (first loop), PMT (second loop), SDT, and EIT.

(Description of IP interface output control processing)
When it is desired to prohibit IP interface output of broadcast content, it is possible to prohibit remote viewing of the broadcast content of the channel by presetting information on the channel (service) that broadcasts the broadcast content in the receiving device. It is done. However, in this method, even if the IP interface output can be permitted or prohibited for each channel, it is difficult to permit or prohibit the IP interface output for each broadcast content. In addition, it is difficult to cope with a case where a channel for which IP interface output has been prohibited is to be permitted later. Therefore, in the present embodiment, the transmission apparatus 10 multiplexes and broadcasts the IP interface output control descriptor indicating whether or not to permit the IP interface output to the broadcast content, and the reception apparatus 20 transmits the IP interface output control description. Based on the child, it is controlled whether to permit the IP interface output.

  FIG. 3 is a flowchart showing an example of the IP interface output control process according to the present embodiment. With reference to this figure, the operation of the IP interface output control process for controlling whether or not the receiving device 20 according to the present embodiment permits the IP interface output of the broadcast content will be described.

  The receiving unit 21 receives the broadcast wave transmitted from the transmission device 10, and outputs the broadcast data of the selected channel in the received broadcast wave to the demultiplexing unit 22 (step S10). The demultiplexing unit 22 demultiplexes video content, audio content, and data from the broadcast data output from the receiving unit 21 and outputs the demultiplexed data to the output control unit 24 (step S20).

  Next, the extraction unit 23 extracts the IP output availability information described in the IP interface output control descriptor from the data separated by the demultiplexing unit 22, and outputs the extracted IP output availability information to the output control unit 24. (Step S30).

  Based on the IP output permission information extracted by the extraction unit 23, the output control unit 24 determines whether IP interface output of broadcast content is permitted (step S40).

  When the IP output permission information is “0” (IP interface output is permitted), the output control unit 24 determines that IP interface output of the broadcast content is permitted (step S40: Yes). In this case, the output control unit 24 outputs the video content, audio content, and data separated by the demultiplexing unit 22 to the format conversion unit 25. The format conversion unit 25 converts the video content, audio content, and data output from the output control unit 24 into an IP packet (format conversion) and outputs the packet to the output unit 26 (step S50). The output unit 26 outputs the video content, the audio content, and the data converted into the IP packet by the format conversion unit 25 to the communication network (step S60).

  On the other hand, when the IP output permission information is “0” (IP interface output is prohibited), the output control unit 24 determines that IP interface output of broadcast content is prohibited (not permitted) (step S40). : No). In this case, the output control unit 24 does not output the video content, audio content, and data separated by the demultiplexing unit 22 to the format conversion unit 25. That is, the receiving device 20 does not output broadcast content transmitted by broadcast waves to the communication network via the IP interface built in the receiving device 20.

  As described above, in the broadcasting system 1 according to the present embodiment, the receiving device 20 includes the demultiplexing unit 22 and the extracting unit 23. The demultiplexing unit 22 is a descriptor (IP interface output control) in which output permission information indicating whether or not to permit content (broadcast content) transmitted by broadcast waves to be output from the receiving device 20 to the communication network is described. The broadcast wave in which the descriptors are multiplexed is separated. The extraction unit 23 extracts output enable / disable information (IP output enable / disable information) described in the descriptor (IP interface output control descriptor) separated by the demultiplexing unit 22.

  Accordingly, the receiving device 20 determines whether the broadcast content is content for which IP interface output is permitted or content for which IP interface output is prohibited based on information multiplexed on the broadcast wave. Can be judged. Therefore, according to the present embodiment, it is possible to control whether or not the receiving device 20 permits the IP interface output of the broadcast content on the broadcast station side (transmitting device 10) that broadcasts the broadcast content.

  Further, according to the present embodiment, IP interface output can be permitted or prohibited for each channel (service) or broadcast content, and a channel for which IP interface output has been prohibited can be permitted later. .

In addition, the receiving device 20 includes an output control unit 24 that controls whether to output broadcast content to the communication network based on the output permission information (IP output permission information) extracted by the extraction unit 23.
For example, if the IP interface output of broadcast content is permitted based on the IP output permission information set on the broadcast station side (transmitting device 10), the reception device 20 outputs the broadcast content to the communication network. When the broadcast content IP interface output is not permitted, the broadcast content is not output to the communication network.
Thereby, the receiving device 20 can control whether to output the broadcast content to the communication network based on the IP output permission information set on the broadcast station side (transmitting device 10) that broadcasts the broadcast content. .

In the broadcasting system 1 according to the present embodiment, the transmission device 10 includes a multiplexing unit 11 and a descriptor information generation unit 12.
The descriptor information generation unit 12 is a descriptor (IP interface output) in which output permission information indicating whether or not to permit content (broadcast content) to be transmitted by broadcast waves to be output from the receiving device 20 to the communication network is described. Control descriptor). The multiplexing unit 11 multiplexes the descriptor (IP interface output control descriptor) generated by the descriptor information generation unit 12 and the content (broadcast content).
Thereby, the transmission apparatus 10 can control whether or not the reception apparatus 20 permits the IP interface output of the broadcast content by multiplexing the descriptor (IP interface output control descriptor) on the broadcast wave.

  Although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design and the like within the scope not departing from the gist of the present invention.

  In addition, a part or all of the multiplexing unit 11 and the descriptor information generation unit 12 included in the transmission device 10 of FIG. 1, or the demultiplexing unit 22, the extraction unit 23, the output control unit 24, and the format conversion included in the reception device 20. Part or all of the unit 25 may be realized by dedicated hardware, and is configured by a memory and a CPU (central processing unit), and a program for realizing the functions of the above-described units is stored in the memory. The function may be realized by loading and executing.

  For example, a part or all of the multiplexing unit 11 and the descriptor information generation unit 12 included in the transmission device 10 of FIG. 1, or the demultiplexing unit 22, the extraction unit 23, the output control unit 24, and the format conversion included in the reception device 20 A program for realizing a part or all of the functions of the unit 25 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed. Processing may be performed. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
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. Further, the “computer-readable recording medium” refers to a volatile memory (RAM) in a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, those holding programs for a certain period of time are also included. 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.

  DESCRIPTION OF SYMBOLS 1 Broadcasting system 10 Transmission apparatus 11 Multiplexing part 12 Descriptor information generation part 13 Transmission part 20 Reception apparatus 21 Receiving part 22 Demultiplexing part 23 Extraction part 24 Output control part 25 Format conversion part 26 Output section

Claims (4)

A demultiplexing unit that separates the broadcast wave in which a descriptor in which remote viewing permission / inhibition information indicating whether or not to allow remote viewing of content transmitted by a broadcast wave is permitted;
An extraction unit for extracting the remote viewing availability information described in the descriptor separated by the demultiplexing unit;
A receiving apparatus comprising: An output control unit for controlling whether to output the content to a communication network based on the remote viewing availability information extracted by the extraction unit;
The receiving apparatus according to claim 1, further comprising: A multiplexing unit that multiplexes the content and the descriptor in which the remote viewing permission / inhibition information indicating whether or not to permit remote viewing of the content transmitted by the broadcast wave is permitted;
A transmission unit that transmits the content multiplexed by the multiplexing unit and the descriptor as the broadcast wave;
A transmission device comprising: On the computer,
Separating the broadcast wave multiplexed with a descriptor in which remote viewing permission / inhibition information indicating whether or not to permit remote viewing of content transmitted by the broadcast wave is permitted;
Extracting the remote viewability information described in the separated descriptor; and
A program for running

Images