JP2019201330A - Transmission wave processing method - Google Patents

Abstract

To provide a technique for more suitably transmitting or receiving an advanced digital broadcasting service.SOLUTION: A transmission wave processing method in a digital broadcasting system includes a transmission step of transmitting a plurality of different transmission waves in a plurality of different polarization directions, a receiving step of receiving a plurality of different transmission waves transmitted in the transmission step, and a demodulation step of demodulating the transmission wave received in the receiving step to generate a stream in the digital broadcasting system, and the plurality of different transmission waves transmitted in the transmission step stores identification information that can identify the plurality of different transmission wave pairs necessary for generating the stream in the demodulation step.SELECTED DRAWING: Figure 2A

Description

  The present invention relates to broadcast transmission technology or broadcast reception technology.

  In place of conventional analog broadcasting services, digital broadcasting services were started in various countries in the late 1990s. Digital broadcasting services include broadcast quality improvement using error correction technology, multi-channel and high definition (HD) using compression coding technology, BML (Broadcast Markup Language) and HTML5 (Hyper Text Markup Language 5). The service used was made multimedia.

  In recent years, advanced digital broadcasting systems have been studied in various countries for the purpose of further improving frequency use efficiency, higher resolution, and higher functionality.

Japanese Patent Laid-Open No. 2006-14420

  More than 10 years have passed since the current digital broadcasting started, and broadcast receivers capable of receiving the current digital broadcasting service are sufficiently widespread. For this reason, it is necessary to consider compatibility with the current digital broadcasting service when starting the advanced digital broadcasting service that is currently being studied. That is, it is preferable to realize the UHD (Ultra High Definition) of the video signal while maintaining the viewing environment of the current digital broadcasting service.

  As a technique for realizing UHD broadcasting with a digital broadcasting service, there is a system described in Patent Document 1. However, the system described in Patent Document 1 is to replace the current digital broadcasting, and does not consider maintaining the viewing environment of the current digital broadcasting service.

  An object of the present invention is to provide a technique for more suitably transmitting or receiving a highly functional advanced digital broadcasting service in consideration of compatibility with current digital broadcasting services.

  As a means for solving the above problems, the technology described in the claims is used.

  For example, in the transmission wave processing method in a digital broadcasting system, the digital broadcasting system includes a transmission step of transmitting a plurality of different transmission waves in a plurality of different polarization directions, and a plurality of transmission waves transmitted in the transmission step. Receiving steps for receiving different transmission waves, and demodulating steps for demodulating the transmission waves received in the reception step to generate streams, and for the plurality of different transmission waves transmitted in the transmission step, What is necessary is just to comprise so that the identification information which can identify the said several pair of different transmission wave required in order to produce | generate the said stream at a demodulation step is stored.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which transmits or receives an advanced digital broadcasting service more suitably can be provided.

1 is a system configuration diagram of a broadcasting system according to an embodiment of the present invention. It is a block diagram of the broadcast receiving apparatus which concerns on one Example of this invention. FIG. 3 is a detailed block diagram of a first tuner / demodulator of the broadcast receiving apparatus according to an embodiment of the present invention. It is a detailed block diagram of the 2nd tuner / demodulation part of the broadcast receiver which concerns on one Example of this invention. FIG. 6 is a detailed block diagram of a third tuner / demodulator of the broadcast receiving apparatus according to an embodiment of the present invention. It is a detailed block diagram of the 4th tuner / demodulation part of the broadcast receiver which concerns on one Example of this invention. It is a detailed block diagram of the first decoder unit of the broadcast receiving apparatus according to an embodiment of the present invention. It is a detailed block diagram of the 2nd decoder part of the broadcast receiver which concerns on one Example of this invention. It is a software block diagram of the broadcast receiver which concerns on one Example of this invention. It is a block diagram of the broadcasting station server which concerns on one Example of this invention. It is a block diagram of the service provider server which concerns on one Example of this invention. It is a figure explaining the segment structure which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the hierarchy allocation in the hierarchy transmission which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the production | generation process of the OFDM transmission wave which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the basic composition of the channel coding part concerning digital broadcasting of one example of the present invention. It is a figure explaining the segment parameter of the OFDM system which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the transmission signal parameter which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining arrangement | positioning of the pilot signal of the synchronous modulation segment which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining arrangement | positioning of the pilot signal of the differential modulation segment which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the bit allocation of the TMCC carrier which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the bit allocation of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the transmission parameter information of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the system identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the carrier modulation mapping system of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the frequency conversion process identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the physical channel number identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining an example of the main signal identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the 4K signal transmission hierarchy identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the additional hierarchy transmission identification of the TMCC information which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the bit allocation of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the structure identification of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the earthquake motion warning information of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the signal identification of the earthquake motion warning information of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the seismic-motion warning detailed information of the seismic-motion warning information of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the seismic-motion warning detailed information of the seismic-motion warning information of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the additional information regarding transmission control of the modulated wave of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the transmission parameter additional information of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the error correction system of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the NUC format of the AC signal which concerns on the digital broadcasting of one Example of this invention. It is a figure explaining the polarized light transmission system which concerns on one Example of this invention. 1 is a system configuration diagram of a broadcasting system using a dual-polarized transmission system according to an embodiment of the present invention. 1 is a system configuration diagram of a broadcasting system using a dual-polarized transmission system according to an embodiment of the present invention. It is a figure explaining the frequency conversion process which concerns on one Example of this invention. It is a figure explaining the structure of the pass-through transmission system based on one Example of this invention. It is a figure explaining the pass through transmission band concerning one example of the present invention. It is a figure explaining the structure of the pass-through transmission system based on one Example of this invention. It is a figure explaining the pass through transmission band concerning one example of the present invention. It is a figure explaining the pass through transmission band concerning one example of the present invention. It is a figure explaining the hierarchy division | segmentation multiplex transmission system which concerns on one Example of this invention. 1 is a system configuration diagram of a broadcasting system using a hierarchical division multiplexing transmission system according to an embodiment of the present invention. It is a figure explaining the frequency conversion amplification process which concerns on one Example of this invention. It is a figure explaining the protocol stack of MPEG-2 TS. It is a figure explaining the name and function of a table used by MPEG-2 TS. It is a figure explaining the name and function of a table used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the name and function of the descriptor used by MPEG-2 TS. It is a figure explaining the protocol stack in the broadcast transmission path of MMT. It is a figure explaining the protocol stack in the communication line of MMT. It is a figure explaining the name and function of a table used by TLV-SI of MMT. It is a figure explaining the name and function of a descriptor used by TLV-SI of MMT. It is a figure explaining the name and function of a message used by MMT-SI of MMT. It is a figure explaining the name and function of a table used by MMT-SI of MMT. It is a figure explaining the name and function of the descriptor used by MMT-SI of MMT. It is a figure explaining the name and function of the descriptor used by MMT-SI of MMT. It is a figure explaining the name and function of the descriptor used by MMT-SI of MMT. It is a figure explaining the data transmission of a MMT system, and the relationship between each table. It is an operation | movement sequence diagram of the channel setting process of the broadcast receiver 100 which concerns on one Example of this invention. It is a figure explaining the data structure of a network information table. It is a figure explaining the data structure of a ground distribution system descriptor. It is a figure explaining the data structure of a service list descriptor. It is a figure explaining the data structure of TS information descriptor. It is an external view of the remote controller which concerns on one Example of this invention. It is a figure explaining the banner display at the time of channel selection concerning one example of the present invention.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

Example 1
[System configuration]
FIG. 1 is a system configuration diagram illustrating an example of a configuration of a broadcasting system.

  The broadcast system includes, for example, a broadcast receiving device 100 and an antenna 200, a radio tower 300 and a broadcast station server 400, a service provider server 500, a mobile phone communication server 600, a mobile phone communication network base station 600B, a mobile phone, and the like. The information terminal 700 includes a broadband network 800 such as the Internet and a router device 800R. In addition, various server devices and communication devices may be further connected to the Internet 800.

  The broadcast receiving apparatus 100 is a television receiver having a reception function for advanced digital broadcast services. The broadcast receiving apparatus 100 may further include a reception function for existing digital broadcast services. Furthermore, by linking functions that use broadband networks to digital broadcasting services (existing digital broadcasting services or advanced digital broadcasting services), it is possible to acquire additional content via broadband networks, perform computations on server devices, and link with mobile terminal devices. It is possible to support a broadcasting / communication cooperation system that combines presentation processing and the like with a digital broadcasting service. Broadcast receiving apparatus 100 receives a digital broadcast wave transmitted from radio tower 300 via antenna 200. The digital broadcast wave may be directly transmitted from the radio tower 300 to the antenna 200, or may be transmitted via a broadcast satellite, a communication satellite, or the like (not shown). A broadcast signal retransmitted by a cable television station may be received via a cable line or the like. The broadcast receiving device 100 can be connected to the Internet 800 via the router device 800R, and can transmit and receive data by communication with each server device on the Internet 800.

  The router device 800R is connected to the Internet 800 by wireless communication or wired communication, is connected to the broadcast receiving device 100 by wired communication, and is connected to the portable information terminal 700 by wireless communication. As a result, each server device on the Internet 800, the broadcast receiving device 100, and the portable information terminal 700 can mutually transmit and receive data via the router device 800R. Router device 800R, broadcast receiving device 100 and portable information terminal 700 constitute a LAN (Local Area Network). Note that communication between the broadcast receiving device 100 and the portable information terminal 700 may be directly performed by a method such as BlueTooth (registered trademark) or NFC (Near Field Communication) without using the router device 800R.

  The radio tower 300 is a broadcasting facility of a broadcasting station, and sends out digital broadcasting waves including various control information related to digital broadcasting services, content data (such as moving image content and audio content) of broadcast programs, and the like. The broadcast station also includes a broadcast station server 400. Broadcast station server 400 stores content data of broadcast programs and metadata such as program titles, program IDs, program outlines, performers, broadcast dates and times of each broadcast program. The broadcast station server 400 provides the content data and metadata to a service provider based on a contract. The provision of content data and metadata to the service provider is performed through an API (Application Programming Interface) provided in the broadcast station server 400.

  The service provider server 500 is a server device that is prepared for the service provider to provide a service using the broadcasting / communication cooperation system. The service provider server 500 stores, manages, and manages the content data and metadata provided from the broadcast station server 400 and the content data and applications (such as operation programs and / or various data) produced for the broadcasting / communication cooperation system. Deliver etc. It also has a function of searching for available applications and providing a list in response to an inquiry from a television receiver. The storage, management and distribution of the content data and metadata, and the storage, management and distribution of the application may be performed by different server devices. The broadcasting station and the service provider may be the same or different companies. A plurality of service provider servers 500 may be prepared for different services. Further, the function of the service provider server 500 may be provided by the broadcast station server 400.

  The mobile telephone communication server 600 is connected to the Internet 800, and is connected to the portable information terminal 700 via the base station 600B. The mobile telephone communication server 600 manages telephone communication (call) and data transmission / reception via the mobile telephone communication network of the portable information terminal 700, and data by communication between the portable information terminal 700 and each server device on the Internet 800. Can be sent and received. Communication between portable information terminal 700 and broadcast receiving apparatus 100 may be performed via base station 600B, mobile telephone communication server 600, Internet 800, and router apparatus 800R.

[Hardware configuration of broadcast receiver]
FIG. 2A is a block diagram illustrating an example of an internal configuration of the broadcast receiving apparatus 100.

  The broadcast receiving apparatus 100 includes a main control unit 101, a system bus 102, a ROM 103, a RAM 104, a storage (storage) unit 110, a LAN communication unit 121, an expansion interface unit 124, a digital interface unit 125, a first tuner / demodulation unit 130C, Two tuner / demodulation unit 130T, third tuner / demodulation unit 130L, fourth tuner / demodulation unit 130B, first decoder unit 140S, second decoder unit 140U, operation input unit 180, video selection unit 191, monitor unit 192, video The output unit 193, the audio selection unit 194, the speaker unit 195, and the audio output unit 196 are configured.

  The main control unit 101 is a microprocessor unit that controls the entire broadcast receiving apparatus 100 in accordance with a predetermined operation program. A system bus 102 is a communication path for transmitting and receiving various data and commands between the main control unit 101 and each operation block in the broadcast receiving apparatus 100.

  A ROM (Read Only Memory) 103 is a non-volatile memory in which a basic operation program such as an operating system and other operation programs are stored. For example, a rewritable ROM such as an EEPROM (Electrically Erasable Programmable ROM) or a flash ROM is used. Used. The ROM 103 stores operation setting values and the like necessary for the operation of the broadcast receiving apparatus 100. A RAM (Random Access Memory) 104 serves as a work area for executing a basic operation program and other operation programs. The ROM 103 and the RAM 104 may be integrated with the main control unit 101. Further, the ROM 103 may not use an independent configuration as shown in FIG. 2A but may use a partial storage area in the storage (accumulation) unit 110.

  The storage (storage) unit 110 stores an operation program and an operation setting value of the broadcast receiving apparatus 100, personal information of a user of the broadcast receiving apparatus 100, and the like. Further, it is possible to store an operation program downloaded via the Internet 800 and various data created by the operation program. It is also possible to store content such as moving images, still images, and audio obtained from broadcast waves or downloaded via the Internet 800. All or some of the functions of the ROM 103 may be replaced by a partial area of the storage (storage) unit 110. Further, the storage (accumulation) unit 110 needs to hold stored information even when power is not supplied to the broadcast receiving apparatus 100 from the outside. Therefore, for example, a device such as a semiconductor device memory such as a flash ROM or SSD (Solid State Drive), a magnetic disk drive such as HDD (Hard Disc Drive), or the like is used.

  The operation programs stored in the ROM 103 and the storage (storage) unit 110 can be added, updated, and expanded in function by download processing from each server device or broadcast wave on the Internet 800.

  The LAN communication unit 121 is connected to the Internet 800 via the router device 800R, and transmits and receives data to and from each server device and other communication devices on the Internet 800. In addition, content data (or part thereof) of a program transmitted via a communication line is also acquired. The connection with the router device 800R may be a wired connection or a wireless connection such as Wi-Fi (registered trademark). The LAN communication unit 121 includes a coding circuit, a decoding circuit, and the like. The broadcast receiving apparatus 100 may further include other communication units such as a BlueTooth (registered trademark) communication unit, an NFC communication unit, and an infrared communication unit.

  The first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, the third tuner / demodulation unit 130L, and the fourth tuner / demodulation unit 130B each receive a broadcast wave of a digital broadcast service, and Channel selection processing (channel selection) is performed by tuning to a predetermined service channel based on the control. Further, a demodulated process or a waveform shaping process of the modulated wave of the received signal, a frame structure or hierarchical structure reconstruction process, an energy despreading process, an error correction decoding process, and the like are performed to reproduce the packet stream. Also, a transmission TMCC (Transmission Multiplexing Configuration Control) signal is extracted and decoded from the received signal.

  The first tuner / demodulator 130C can input the digital broadcast wave of the current terrestrial digital broadcast service received by the antenna 200C, which is the current terrestrial digital broadcast reception antenna. Further, the first tuner / demodulator 130C receives a broadcast signal of one polarization of a horizontal (H) polarization signal and a vertical (V) polarization signal of both-polarization terrestrial digital broadcasting described later. It is also possible to demodulate a segment of a layer that adopts the same modulation scheme of other terrestrial digital broadcasting services. The first tuner / demodulator 130C can also input a broadcast signal of layer division multiplex digital terrestrial broadcasting, which will be described later, and demodulate a layer that employs the same modulation scheme as the current terrestrial digital broadcast service. The second tuner / demodulator 130T inputs the digital broadcast wave of the advanced terrestrial digital broadcast service received by the antenna 200T, which is a dual-polarized terrestrial digital broadcast receiving antenna, via the converter 201T. The third tuner / demodulator 130L inputs the digital broadcast wave of the advanced terrestrial digital broadcast service received by the antenna 200L, which is the hierarchical division multiplexed terrestrial digital broadcast receiving antenna, via the converter 201L. The fourth tuner / demodulator 130B converts a digital broadcast wave of an advanced BS (Broadcasting Satellite) digital broadcast service and an advanced CS (Communication Satellite) digital broadcast service received by the antenna 200B, which is a BS / CS shared receiving antenna, Input via 201B.

  The expression “tuner / demodulator” means a component having a tuner function and a demodulator function.

  In addition, the antenna 200C, the antenna 200T, the antenna 200L, the antenna 200B, the conversion unit 201T, the conversion unit 201L, and the conversion unit 201B do not constitute a part of the broadcast receiving device 100, but a building in which the broadcast receiving device 100 is installed. Belonging to the equipment side.

  The above-described current terrestrial digital broadcast is a broadcast signal of a terrestrial digital broadcast service that transmits video having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels.

  Although details of polarized terrestrial digital broadcasting (advanced terrestrial digital broadcasting employing a polarized transmission system) will be described later, it is possible to transmit an image having a maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels. This is a broadcast signal for a terrestrial digital broadcasting service. The dual-polarized terrestrial digital broadcast is a terrestrial digital broadcast that uses a plurality of polarizations of horizontal (H) polarization and vertical (V) polarization, and is divided in both of the plurality of polarizations. Terrestrial digital broadcasting service capable of transmitting video having the maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels.

  In the description of each embodiment of the present invention, when the expression “plurality of polarization” is used for polarized terrestrial digital broadcasting, horizontal (H) polarization and vertical (V) polarization are used unless otherwise specified. It means two polarizations of a wave. Even when the expression “polarization” is simply used, it means “polarization signal”. In addition, the same modulation method is used for the above-described current digital terrestrial broadcasting that transmits video having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels in one or both of a plurality of polarized waves in a divided segment. Can be transmitted. That is, in the dual-polarized terrestrial digital broadcasting, a current terrestrial digital broadcasting service that transmits a video having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels in a plurality of polarization-different segments in each embodiment of the present invention, and horizontal It is possible to simultaneously transmit a digital terrestrial broadcasting service capable of transmitting an image having a maximum resolution of 1920 pixels × vertical 1080 pixels.

  Although details of hierarchical division multiplex terrestrial broadcasting (advanced terrestrial digital broadcasting adopting the hierarchical division multiplex transmission method) will be described later, it is possible to transmit an image having a maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels. This is a broadcast signal for a terrestrial digital broadcasting service. Hierarchical division multiplex terrestrial digital broadcasting multiplexes a plurality of digital broadcast signals having different signal levels. The hierarchical division multiplex terrestrial digital broadcasting of each embodiment of the present invention is a broadcast of the current terrestrial digital broadcasting service that transmits a video having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels as a plurality of digital broadcast signals having different signal levels. A signal and a broadcast signal of a terrestrial digital broadcasting service capable of transmitting a video having a maximum resolution of a pixel number exceeding horizontal 1920 pixels × vertical 1080 pixels can be multiplexed and transmitted in the frequency band of the same physical channel. That is, in the hierarchical division multiplex digital terrestrial broadcasting of each embodiment of the present invention, a current terrestrial digital broadcasting service that transmits video having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels in a plurality of layers having different signal levels, and horizontal It is possible to simultaneously transmit a digital terrestrial broadcasting service capable of transmitting an image having a maximum resolution of 1920 pixels × vertical 1080 pixels.

  The broadcast receiving apparatus in each embodiment of the present invention only needs to be configured to suitably receive advanced digital broadcasts. The first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, and the third tuner / demodulation. It is not essential to include all of the unit 130L and the fourth tuner / demodulator 130B. For example, at least one of the second tuner / demodulator 130T or the third tuner / demodulator 130L may be provided. In order to realize a more advanced function, one or more of the four tuner / demodulators may be provided in addition to one of the second tuner / demodulator 130T and the third tuner / demodulator 130L. good.

  Further, the antenna 200C, the antenna 200T, and the antenna 200L may be used as appropriate. Further, among the first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, and the third tuner / demodulation unit 130L, a plurality of tuner / demodulation units may be combined (or integrated) as appropriate.

  The first decoder unit 140S and the second decoder unit 140U are output from the first tuner / demodulator 130C, the second tuner / demodulator 130T, the third tuner / demodulator 130L, and the fourth tuner / demodulator 130B, respectively. A packet stream or a packet stream acquired from each server device on the Internet 800 via the LAN communication unit 121 is input. The packet streams input by the first decoder unit 140S and the second decoder unit 140U are MPEG (Moving Picture Experts Group) -2 TS (Transport Stream), MPEG-2 PS (Program Stream), TLV (Type Length Value), and MT. It may be a packet stream of a format such as (MPEG Media Transport).

  The first decoder unit 140S and the second decoder unit 140U are respectively provided with video data, audio data, and various information data from the packet stream based on conditional access (CA) processing and various control information included in the packet stream. Demultiplexing processing that separates and extracts video data, audio data decoding processing, program information acquisition and EPG (Electronic Program Guide) generation processing, data broadcast screen and multimedia data playback processing, etc. . Also, a process of superimposing the generated EPG and the reproduced multimedia data on the decoded video data and audio data is performed.

  The video selection unit 191 receives the video data output from the first decoder unit 140S and the video data output from the second decoder unit 140U, and appropriately selects and / or superimposes based on the control of the main control unit 101. Perform the process. In addition, the video selection unit 191 performs scaling processing, OSD (On Screen Display) data superimposition processing, and the like as appropriate. The monitor unit 192 is a display device such as a liquid crystal panel, for example, and displays the video data that has been selected and / or superimposed by the video selection unit 191 and provides it to the user of the broadcast receiving apparatus 100. The video output unit 193 is a video output interface that outputs video data selected and / or superimposed by the video selection unit 191 to the outside.

  The audio selection unit 194 receives the audio data output from the first decoder unit 140S and the audio data output from the second decoder unit 140U, and selects and / or mixes as appropriate based on the control of the main control unit 101. Perform the process. The speaker unit 195 outputs the audio data that has been selected and / or mixed by the audio selection unit 194 and provides it to the user of the broadcast receiving apparatus 100. The audio output unit 196 is an audio output interface that outputs the audio data that has been selected and / or mixed by the audio selection unit 194 to the outside.

  The digital interface unit 125 is an interface that outputs or inputs a packet stream including encoded digital video data and / or digital audio data. In the digital interface unit 125, the first decoder unit 140S and the second decoder unit 140U are connected to the first tuner / demodulator 130C, the second tuner / demodulator 130T, the third tuner / demodulator 130L, and the fourth tuner / demodulator 130B. The input packet stream can be output as it is. Alternatively, control may be performed so that a packet stream input from the outside via the digital interface unit 125 is input to the first decoder unit 140S or the second decoder unit 140U or stored in the storage (storage) unit 110. Alternatively, video data and audio data separated and extracted by the first decoder unit 140S and the second decoder unit 140U may be output. Further, control may be performed so that video data and audio data input from the outside via the digital interface unit 125 are input to the first decoder unit 140S and the second decoder unit 140U or stored in the storage (accumulation) unit 110. good.

  The extension interface unit 124 is an interface group for extending the functions of the broadcast receiving apparatus 100, and includes an analog video / audio interface, a USB (Universal Serial Bus) interface, a memory interface, and the like. The analog video / audio interface performs input of analog video signals / audio signals from external video / audio output devices, output of analog video signals / audio signals to external video / audio input devices, and the like. The USB interface is connected to a PC or the like to transmit / receive data. A broadcast program and other content data may be recorded by connecting an HDD. A keyboard or other USB device may be connected. The memory interface transmits and receives data by connecting a memory card and other memory media.

  The operation input unit 180 is an instruction input unit that inputs an operation instruction to the broadcast receiving apparatus 100. The operation input unit 180 is an operation in which a remote control receiving unit that receives a command transmitted from a remote controller (remote controller) (not shown) and a button switch are arranged. Consists of keys. Only one of them may be used. Further, the operation input unit 180 can be replaced with a touch panel or the like placed on the monitor unit 192. A keyboard connected to the extension interface unit 124 may be substituted. The remote control can be replaced with a portable information terminal 700 having a remote control command transmission function.

  When the broadcast receiving apparatus 100 is a television receiver or the like, the video output unit 193 and the audio output unit 196 are not essential components. The broadcast receiving apparatus 100 may be an optical disk drive recorder such as a DVD (Digital Versatile Disc) recorder, a magnetic disk drive recorder such as an HDD recorder, an STB (Set Top Box), or the like. It may be a PC (Personal Computer) or a tablet terminal having a digital broadcasting service reception function. When the broadcast receiving apparatus 100 is a DVD recorder, HDD recorder, STB, or the like, the monitor unit 192 and the speaker unit 195 are not essential components. By connecting an external monitor and an external speaker to the video output unit 193 and the audio output unit 196 or the digital interface unit 125, an operation similar to that of a television receiver or the like is possible.

  FIG. 2B is a block diagram illustrating an example of a detailed configuration of the first tuner / demodulator 130C.

  The channel selection / detection unit 131C receives the current digital broadcast wave received by the antenna 200C and performs channel selection based on the channel selection control signal. The TMCC decoding unit 132C extracts a TMCC signal from the output signal of the channel selection / detection unit 131C and acquires various TMCC information. The acquired TMCC information is used to control each process in the subsequent stage. Details of the TMCC signal and TMCC information will be described later.

  Based on the TMCC information and the like, the demodulating unit 133C modulates a system using QPSK (Quadrature Phase Shift Keying), DQPSK (Differential QPSK), 16QAM (Quadrature Amplitude Modulation), 64QAM, and the like. Demodulation processing including frequency deinterleaving, time deinterleaving, carrier demapping processing, and the like is performed. The demodulator 133C may be able to further cope with a modulation scheme different from the above-described modulation schemes.

  The stream reproduction unit 134C performs inner code error correction processing such as layer division processing, Viterbi decoding, energy despreading processing, stream reproduction processing, outer code error correction processing such as RS (Reed Solomon) decoding, and the like. Note that error correction processing may be different from those described above. The packet stream reproduced and output by the stream reproducing unit 134C is, for example, MPEG-2 TS. Other types of packet streams may be used.

  FIG. 2C is a block diagram illustrating an example of a detailed configuration of the second tuner / demodulator 130T.

  The channel selection / detection unit 131H receives the horizontal (H) polarization signal of the digital broadcast wave received by the antenna 200T and performs channel selection based on the channel selection control signal. The channel selection / detection unit 131V receives the vertical (V) polarization signal of the digital broadcast wave received by the antenna 200T, and performs channel selection based on the channel selection control signal. Note that the operation of channel selection processing in the channel selection / detection unit 131H and the operation of channel selection processing in the channel selection / detection unit 131V may be controlled in conjunction with each other, or may be controlled independently. That is, the channel selection / detection unit 131H and the channel selection / detection unit 131V are regarded as one channel selection / detection unit, and the digital broadcast service 1 is transmitted using both horizontal / vertical polarized waves. It is also possible to perform control so that one channel is selected. Assuming that the channel selection / detection unit 131H and the channel selection / detection unit 131V are two independent channel selection / detection units, only horizontal polarization (or It is also possible to control to select two different channels of the digital broadcasting service transmitted using only the vertical polarization).

  Note that the horizontal (H) polarization signal and the vertical (V) polarization signal received by the second tuner / demodulation unit 130T of the broadcast receiving apparatus in each embodiment of the present invention are broadcast waves whose polarization directions differ by approximately 90 degrees. Any polarization signal may be used, and the horizontal (H) polarization signal and the vertical (V) polarization signal described below and the configuration related to reception thereof may be reversed.

  The TMCC decoding unit 132H extracts a TMCC signal from the output signal of the channel selection / detection unit 131H and acquires various TMCC information. The TMCC decoding unit 132V extracts a TMCC signal from the output signal of the channel selection / detection unit 131V and acquires various TMCC information. Only one of the TMCC decoding unit 132H and the TMCC decoding unit 132V may be used. The acquired TMCC information is used to control each process in the subsequent stage.

  The demodulator 133H and the demodulator 133V are BPSK (Binary Phase Shift Keying), DBPSK (Differential BPSK), QPSK, DQPSK, 8PSK (Phase Shift Keying), and 16PSK, respectively. ), 32APSK, 16QAM, 64QAM, 256QAM, 1024QAM, and the like are input, and a demodulation process including a frequency deinterleave, a time deinterleave, a carrier demapping process, and the like is performed. The demodulating unit 133H and the demodulating unit 133V may be capable of further supporting modulation schemes different from the above-described modulation schemes.

  The stream reproduction unit 134H and the stream reproduction unit 134V respectively perform layer division processing, inner code error correction processing such as Viterbi decoding and LDPC (Low Density Parity Check) decoding, energy despreading processing, stream reproduction processing, RS decoding, and BCH decoding. Etc., and so on. Note that error correction processing may be different from those described above. The packet stream reproduced and output by the stream reproducing unit 134H is, for example, MPEG-2 TS. The packet stream reproduced and output by the stream reproducing unit 134V is, for example, a TLV including an MPEG-2 TS or MMT packet stream. Each may be another type of packet stream.

  FIG. 2D is a block diagram illustrating an example of a detailed configuration of the third tuner / demodulator 130L.

  The channel selection / detection unit 131L receives a digital broadcast wave that has been subjected to layered division multiplexing (LDM) processing from the antenna 200L, and performs channel selection based on the channel selection control signal. Digital broadcast waves subjected to layer division multiplex processing are different in digital broadcast services (or different in the same broadcast service) in which the upper layer (Upper Layer: UL) modulated wave and the lower layer (Lower Layer: LL) modulated wave are different. Channel). Also, the upper layer modulated wave is output to demodulator 133S, and the lower layer modulated wave is output to demodulator 133L.

  The TMCC decoding unit 132L receives the upper layer modulation wave and the lower layer modulation wave output from the channel selection / detection unit 131L, extracts a TMCC signal, and acquires various TMCC information. The signal input to the TMCC decoding unit 132L may be only one of an upper layer modulated wave and a lower layer modulated wave.

  The demodulating unit 133S and the demodulating unit 133L perform the same operations as the demodulating unit 133H and the demodulating unit 133V, and thus detailed description thereof is omitted. Further, the stream reproduction unit 134S and the stream reproduction unit 134L perform the same operations as the stream reproduction unit 134H and the stream reproduction unit 134V, respectively, and thus detailed description thereof is omitted.

  FIG. 2E is a block diagram illustrating an example of a detailed configuration of the fourth tuner / demodulator 130B.

  The channel selection / detection unit 131B receives the digital broadcast wave of the advanced BS digital broadcast service and the advanced CS digital broadcast service received by the antenna 200B, and performs channel selection based on the channel selection control signal. Since other operations are the same as those of the channel selection / detection unit 131H and the channel selection / detection unit 131V, detailed description thereof will be omitted. Also, the TMCC decoding unit 132B, the demodulation unit 133B, and the stream reproduction unit 134B perform the same operations as the TMCC decoding unit 132H, the TMCC decoding unit 132V, the demodulation unit 133H, the demodulation unit 133V, and the stream reproduction unit 134V, respectively. Description is omitted.

  FIG. 2F is a block diagram illustrating an example of a detailed configuration of the first decoder unit 140S.

  Based on the control of the main control unit 101, the selection unit 141S receives the packet stream input from the first tuner / demodulation unit 130C, the packet stream input from the second tuner / demodulation unit 130T, and the third tuner / demodulation unit 130L. One of the selected packet streams is selected and output. The packet stream input from the first tuner / demodulator 130C, the second tuner / demodulator 130T, or the third tuner / demodulator 130L is, for example, MPEG-2 TS. The CA descrambler 142S performs a process of canceling a predetermined scramble encryption algorithm based on various control information related to limited reception superimposed on the packet stream.

  The demultiplexing unit 143S is a stream decoder, and separates and extracts video data, audio data, character super data, subtitle data, program information data, and the like based on various control information included in the input packet stream. The separated and extracted video data is distributed to the video decoder 145S, the separated and extracted audio data is distributed to the audio decoder 146S, and the separated and extracted character super data, caption data, and program information data are distributed to the data decoder 144S. A packet stream (for example, MPEG-2 PS or the like) acquired from a server device on the Internet 800 via the LAN communication unit 121 may be input to the demultiplexing unit 143S. The demultiplexing unit 143S can output the packet stream input from the first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, and the third tuner / demodulation unit 130L to the outside via the digital interface 125. It is possible to input a packet stream acquired from the outside via the digital interface 125.

  The video decoder 145S performs a decoding process of video information that has been compression-encoded, a colorimetric conversion process, a dynamic range conversion process, and the like for the decoded video information with respect to the video data input from the demultiplexing unit 143S. Also, processing such as resolution conversion (up / down conversion) based on the control of the main control unit 101 is performed, and UHD (horizontal 3840 pixels × vertical 2160 pixels), HD (horizontal 1920 pixels × vertical 1080 pixels), SD ( Video data is output at a resolution of 720 pixels (horizontal 720 pixels × 480 pixels vertically). Video data output at other resolutions may be performed. The audio decoder 146S performs a decoding process on the audio information that has been compression-encoded. Also, downmix processing based on the control of the main control unit 101 is performed, and audio data is output with the number of channels such as 22.2 ch, 7.1 ch, 5.1 ch, and 2 ch. Note that a plurality of video decoders 145S and audio decoders 146S may be provided in order to simultaneously perform a plurality of video data and audio data decoding processes.

  The data decoder 144S performs processing for generating EPG based on program information data, data broadcast screen generation processing based on BML data, control processing for a cooperative application based on a broadcast communication cooperation function, and the like. The data decoder 144S has a BML browser function for executing a BML document, and the data broadcast screen generation process is executed by the BML browser function. Further, the data decoder 144S performs processing for decoding character super data to generate character super information, processing for decoding subtitle data to generate subtitle information, and the like.

  The superimposing unit 147S, the superimposing unit 148S, and the superimposing unit 149S perform superimposing processing of the video data output from the video decoder 145S and the EPG and data broadcast screen output from the data decoder 144S, respectively. The synthesizing unit 151S performs a process of synthesizing the audio data output from the audio decoder 146S and the audio data reproduced by the data decoder 144S. The selection unit 150S performs video data resolution selection based on the control of the main control unit 101. Note that the functions of the superimposing unit 147S, the superimposing unit 148S, the superimposing unit 149S, and the selecting unit 150S may be integrated with the video selecting unit 191. The function of the synthesis unit 151S may be integrated with the voice selection unit 194.

  FIG. 2G is a block diagram illustrating an example of a detailed configuration of the second decoder unit 140U.

  Based on the control of the main control unit 101, the selection unit 141U receives a packet stream input from the second tuner / demodulation unit 130T, a packet stream input from the third tuner / demodulation unit 130L, and an input from the fourth tuner / demodulation unit 130B. One of the selected packet streams is selected and output. The packet stream input from the second tuner / demodulation unit 130T, the third tuner / demodulation unit 130L, and the fourth tuner / demodulation unit 130B is, for example, an MMT packet stream or a TLV including an MMT packet stream. It may be an MPEG-2 TS format packet stream employing HEVC (High Efficiency Video Coding) or the like as a video compression method. The CA descrambler 142U performs a predetermined scramble encryption algorithm release process based on various control information related to limited reception superimposed on the packet stream.

  The demultiplexing unit 143U is a stream decoder, and separates and extracts video data, audio data, character super data, caption data, program information data, and the like based on various control information included in the input packet stream. The separated and extracted video data is distributed to the video decoder 145U, the separated and extracted audio data is distributed to the audio decoder 146U, and the separated and extracted character super data, subtitle data, and program information data are distributed to the multimedia decoder 144U. . A packet stream (for example, MPEG-2 PS or MMT packet stream) acquired from a server device on the Internet 800 via the LAN communication unit 121 may be input to the demultiplexing unit 143U. Further, the demultiplexing unit 143U can output the packet stream input from the second tuner / demodulation unit 130T, the third tuner / demodulation unit 130L, or the fourth tuner / demodulation unit 130B to the outside via the digital interface 125. It is possible to input a packet stream acquired from the outside via the digital interface 125.

  The multimedia decoder 144U performs processing for generating an EPG based on program information data, multimedia screen generation processing based on multimedia data, control processing for a cooperative application based on a broadcast communication cooperation function, and the like. The multimedia decoder 144U has an HTML browser function for executing an HTML document, and the multimedia screen generation process is executed by the HTML browser function.

  The video decoder 145U, the audio decoder 146U, the superimposing unit 147U, the superimposing unit 148U, the superimposing unit 149U, the synthesizing unit 151U, and the selecting unit 150U are respectively the video decoder 145S, the audio decoder 146S, the superimposing unit 147S, the superimposing unit 148S, and the superimposing unit 149S. And a component having the same functions as those of the combining unit 151S and the selection unit 150S. If the S at the end of the code is replaced with U in the description of the video decoder 145S, the audio decoder 146S, the superposition unit 147S, the superposition unit 148S, the superposition unit 149S, the synthesis unit 151S, and the selection unit 150S in FIG. The video decoder 145U, the audio decoder 146U, the superimposing unit 147U, the superimposing unit 148U, the superimposing unit 149U, the synthesizing unit 151U, and the selecting unit 150U will be described separately, and thus detailed description thereof will be omitted.

[Broadcast receiving device software configuration]
FIG. 2H is a software configuration diagram of the broadcast receiving apparatus 100, and shows an example of a software configuration in the storage (storage) unit 110 (or ROM 103, the same applies hereinafter) and the RAM 104. The storage (storage) unit 110 stores a basic operation program 1001, a reception function program 1002, a browser program 1003, a content management program 1004, and other operation programs 1009. In addition, the storage (storage) unit 110 includes a content storage area 1011 for storing content data such as moving images, still images, and audio, authentication information used for communication and cooperation with external mobile terminal devices and server devices, and the like. Authentication information storage area 1012 for storing the information, and various information storage areas 1019 for storing other various information.

  The basic operation program 1001 stored in the storage (accumulation) unit 110 is expanded in the RAM 104, and the main control unit 101 executes the expanded basic operation program to constitute the basic operation control unit 1101. The reception function program 1002, the browser program 1003, and the content management program 1004 stored in the storage (accumulation) unit 110 are expanded in the RAM 104, and the main control unit 101 executes each expanded operation program. Thus, the reception function control unit 1102, the browser engine 1103, and the content management unit 1104 are configured. The RAM 104 includes a temporary storage area 1200 that temporarily holds data created when each operation program is executed as necessary.

  In the following, in order to simplify the description, the main control unit 101 develops the basic operation program 1001 stored in the storage (accumulation) unit 110 in the RAM 104 and executes the basic operation program 1001 to control each operation block. Are described as those in which the basic operation control unit 1101 controls each operation block. The same description is made for other operation programs.

  The reception function control unit 1102 performs basic control such as the broadcast reception function and the broadcast communication cooperation function of the broadcast reception apparatus 100. In particular, the channel selection / demodulation unit 1102a performs channel selection processing and TMCC information in the first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, the third tuner / demodulation unit 130L, the fourth tuner / demodulation unit 130B, and the like. It mainly controls acquisition processing and demodulation processing. The stream reproduction control unit 1102b includes a layer division process, an error correction decoding process, and an energy in the first tuner / demodulator 130C, the second tuner / demodulator 130T, the third tuner / demodulator 130L, the fourth tuner / demodulator 130B, etc. Mainly controls the despreading process and the stream reproduction process. The AV decoding unit 1102c mainly controls demultiplexing processing (stream decoding processing), video data decoding processing, audio data decoding processing, and the like in the first decoder unit 140S, the second decoder unit 140H, and the like. The multimedia (MM) data reproduction unit 1102d is a BML data reproduction process, a character super data decoding process, a caption data decoding process, a communication cooperation application control process in the first decoder unit 140S, and an HTML data reproduction process in the second decoder unit 140H. And multimedia screen generation processing, communication cooperation application control processing, and the like are mainly controlled. The EPG generation unit 1102e mainly controls EPG generation processing and display processing of the generated EPG in the first decoder unit 140S and the second decoder unit 140H. The presentation processing unit 1102f controls the colorimetry conversion processing, dynamic range conversion processing, resolution conversion processing, audio downmix processing, and the like in the first decoder unit 140S and the second decoder unit 140H, and the video selection unit 191 and the audio selection unit 194. Etc. are controlled.

  The BML browser 1103a and the HTML browser 1103b of the browser engine 1103 interpret the BML document and the HTML document in the above-described BML data reproduction processing and HTML data reproduction processing, and perform data broadcast screen generation processing and multimedia screen generation processing. .

  The content management unit 1104 is a time schedule management and execution control when making a broadcast program recording reservation or viewing reservation, and a copyright when outputting a broadcast program or a recorded program from the digital I / F 125 or the LAN communication unit 121 or the like. Performs expiration date management of linked applications acquired based on management and broadcast communication linkage functions.

  Each operation program may be stored in advance in the storage (storage) unit 110 and / or the ROM 103 at the time of product shipment. You may acquire from the server apparatus on the internet 800 via LAN communication part 121 grade | etc., After product shipment. Further, each operation program stored in a memory card, an optical disk, or the like may be acquired via the expansion interface unit 124 or the like. It may be newly acquired or updated via a broadcast wave.

[Broadcasting station server configuration]
FIG. 3A is an example of the internal configuration of the broadcast station server 400. The broadcast station server 400 includes a main control unit 401, a system bus 402, a RAM 404, a storage unit 410, a LAN communication unit 421, and a digital broadcast signal transmission unit 460.

  The main control unit 401 is a microprocessor unit that controls the entire broadcast station server 400 according to a predetermined operation program. A system bus 402 is a communication path for transmitting and receiving various data and commands between the main control unit 401 and each operation block in the broadcast station server 400. The RAM 404 serves as a work area when executing each operation program.

  The storage unit 410 stores a basic operation program 4001, a content management / distribution program 4002, and a content transmission program 4003, and further includes a content data storage area 4011 and a metadata storage area 4012. The content data storage area 4011 stores content data of each broadcast program broadcast by the broadcast station. The metadata storage area 4012 stores metadata such as the program title, program ID, program outline, performer, broadcast date and time of each broadcast program.

  The basic operation program 4001, content management / distribution program 4002, and content transmission program 4003 stored in the storage unit 410 are expanded in the RAM 404, and the main control unit 401 further expands the basic operation program and content management / content A basic operation control unit 4101 and a content management / distribution control unit 4102 content transmission control unit 4103 are configured by executing the distribution program and the content transmission program.

  In the following, in order to simplify the description, a process for controlling each operation block by the main control unit 401 by developing the basic operation program 4001 stored in the storage unit 410 in the RAM 404 and executing the basic operation program 4001 will be described. It is described that the operation control unit 4101 controls each operation block. The same description is made for other operation programs.

  The content management / distribution control unit 4102 manages content data, metadata, etc. stored in the content data storage area 4011 and the metadata storage area 4012 and provides the service provider with the content data, metadata, etc. based on a contract. Control when providing. Furthermore, the content management / distribution control unit 4102 also performs authentication processing of the service provider server 500 as necessary when providing content data, metadata, and the like to the service provider.

  The content transmission control unit 4103 includes broadcast program content data stored in the content data storage area 4011, broadcast program titles, program IDs, program content copy control information stored in the metadata storage area 4012, and the like. Time schedule management when the stream is transmitted via the digital broadcast signal transmission unit 460 is performed.

  The LAN communication unit 421 is connected to the Internet 800 and performs communication with the service provider server 500 and other communication devices on the Internet 800. The LAN communication unit 421 includes a coding circuit, a decoding circuit, and the like. The digital broadcast signal transmission unit 460 performs a process such as modulation on a stream composed of content data, program information data, and the like of each broadcast program stored in the content data storage area 4011, and performs digital processing via the radio tower 300. Transmit as a broadcast wave.

[Service provider server configuration]
FIG. 3B is an example of the internal configuration of the service provider server 500. The service provider server 500 includes a main control unit 501, a system bus 502, a RAM 504, a storage unit 510, and a LAN communication unit 521.

  The main control unit 501 is a microprocessor unit that controls the entire service provider server 500 in accordance with a predetermined operation program. A system bus 502 is a communication path for transmitting and receiving various data and commands between the main control unit 501 and each operation block in the service provider server 500. The RAM 504 serves as a work area when executing each operation program.

  The storage unit 510 stores a basic operation program 5001, a content management / distribution program 5002, and an application management / distribution program 5003, and further includes a content data storage area 5011, a metadata storage area 5012, and an application storage area 5013. The content data storage area 5011 and the metadata storage area 5012 store content data and metadata provided from the broadcast station server 400, content created by a service provider, metadata related to the content, and the like. The application storage area 5013 stores applications (operation programs and / or various data) necessary for realizing each service of the broadcasting / communication cooperation system for distribution in response to a request from each television receiver.

  The basic operation program 5001, content management / distribution program 5002, and application management / distribution program 5003 stored in the storage unit 510 are expanded in the RAM 504, and the main control unit 501 further expands the basic operation program and content. By executing the management / distribution program and the application management / distribution program, a basic operation control unit 5101, a content management / distribution control unit 5102, and an application management / distribution control unit 5103 are configured.

  In the following, in order to simplify the description, the main control unit 501 performs a process for controlling each operation block by expanding the basic operation program 5001 stored in the storage unit 510 to the RAM 504 and executing it. It is described that the operation control unit 5101 controls each operation block. The same description is made for other operation programs.

  The content management / distribution control unit 5102 obtains content data and metadata from the broadcast station server 400, manages content data and metadata stored in the content data storage area 5011 and the metadata storage area 5012, and Control of distribution of the content data, metadata, and the like to the television receiver is performed. The application management / distribution control unit 5103 performs management of each application stored in the application storage area 5013 and control when distributing each application in response to a request from each television receiver. Furthermore, the application management / distribution control unit 5103 also performs authentication processing of the television receiver as necessary when distributing each application to each television receiver.

  The LAN communication unit 521 is connected to the Internet 800 and performs communication with the broadcast station server 400 and other communication devices on the Internet 800. In addition, communication with the broadcast receiving device 100 and the portable information terminal 700 is performed via the router device 800R. The LAN communication unit 521 includes a coding circuit, a decoding circuit, and the like.

[Broadcast wave of digital broadcasting]
Here, an example of a broadcast wave of digital broadcasting received by the broadcast receiving apparatus according to the embodiment of the present invention will be described.

  The broadcast receiving apparatus 100 is capable of receiving a terrestrial digital broadcast service that shares at least a part of the specifications with an ISDB-T (Integrated Services Digital Broadcasting for Terrestrial Television Broadcasting) system. Specifically, the dual-polarized terrestrial digital broadcast that can be received by the second tuner / demodulator 130T is an advanced terrestrial digital broadcast that shares some specifications with the ISDB-T system. The hierarchical division multiplex terrestrial digital broadcast that can be received by the third tuner / demodulator 130L is an advanced terrestrial digital broadcast that shares some specifications with the ISDB-T system. The current terrestrial digital broadcast that can be received by the first tuner / demodulator 130C is an ISDB-T terrestrial digital broadcast. Further, the advanced BS digital broadcast and the advanced CS digital broadcast that can be received by the fourth tuner / demodulator 130B are digital broadcasts different from the ISDB-T system.

  Here, similarly to the ISDB-T system, the polarized terrestrial digital broadcast and the hierarchical division multiplexed terrestrial digital broadcast according to the present embodiment are OFDM (Orthogonal Frequency Division Multiplexing), which is one of the multicarrier systems. Adopt frequency division multiplexing. Since OFDM is a multicarrier system, it has a long symbol length, and it is effective to add a redundant part in the time axis direction called a guard interval, which can reduce the influence of multipath within the guard interval. It is. Therefore, it is possible to realize an SFN (Single Frequency Network: single frequency network), and it is possible to effectively use the frequency.

  As in the ISDB-T system, the polarization-use terrestrial digital broadcast and the hierarchical division multiplex terrestrial digital broadcast according to the present embodiment divide OFDM carriers into groups called segments, and as shown in FIG. One channel bandwidth of the broadcast service is composed of 13 segments. The center of the band is set as the position of segment 0, and segment numbers (0 to 12) are sequentially assigned above and below. Transmission path coding of the dual-polarized terrestrial digital broadcast and the hierarchical division multiplexed terrestrial digital broadcast according to the present embodiment is performed in units of OFDM segments. For this reason, it is possible to define hierarchical transmission. For example, a part of OFDM segments can be allocated to a fixed reception service and the rest to a mobile reception service within the bandwidth of one television channel. it can. In hierarchical transmission, each layer is composed of one or a plurality of OFDM segments, and parameters such as carrier modulation scheme, inner code coding rate, time interleave length, and the like can be set for each layer. Note that the number of hierarchies can be arbitrarily set. For example, the maximum number of hierarchies may be set to three. FIG. 4B shows an example of hierarchical allocation of OFDM segments when the number of layers is 3 or 2. In the example of FIG. 4B (1), the number of hierarchies is 3, the A hierarchy is composed of 1 segment (segment 0), the B hierarchy is composed of 7 segments (segments 1 to 7), and the C hierarchy is composed of 5 segments ( It consists of segments 8-12). In the example of FIG. 4B (2), the number of hierarchies is 3, the A hierarchy is composed of 1 segment (segment 0), the B hierarchy is composed of 5 segments (segments 1 to 5), and the C hierarchy is 7 segments ( Segment 6-12). In the example of FIG. 4B (3), the number of hierarchies is 2, the A hierarchy is composed of 1 segment (segment 0), and the B hierarchy is composed of 12 segments (segments 1 to 12). The number of OFDM segments in each layer, transmission channel coding parameters, and the like are determined according to the organization information, and transmitted by a TMCC signal that is control information for assisting the operation of the receiver.

  In addition, as an example of the usage example of the segment hierarchy allocation of (1), (2), and (3) in FIG. 4B, for example, there may be the following example.

  For example, the hierarchical allocation in FIG. 4B (1) can be used in the dual-polarized terrestrial digital broadcasting according to the present embodiment, and the same segment hierarchical allocation may be used for both the horizontal polarization and the vertical polarization. Specifically, the mobile reception service of the current digital terrestrial broadcasting may be transmitted using the above-mentioned one segment of horizontal polarization as the A layer. (Note that the current mobile terrestrial broadcasting mobile reception service may transmit the same service in the above-mentioned one segment of vertical polarization. In this case, this is also treated as the A layer.) What is necessary is just to transmit the terrestrial digital broadcasting service which transmits the image | video with the maximum resolution of horizontal 1920 pixels x vertical 1080 pixels which is the present terrestrial digital broadcasting by said 7 segments. (Note that the terrestrial digital broadcasting service that transmits video having the maximum resolution of horizontal 1920 pixels × vertical 1080 pixels may transmit the same service in the above-mentioned seven segments of vertical polarization. In addition, the above-mentioned 5 segments of both horizontal polarization and vertical polarization as the C layer, a total of 10 segments, a high-level ground capable of transmitting video with a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels You may comprise so that a digital broadcasting service may be transmitted. Details of the transmission will be described later. The segment layer-assigned transmission wave can be received by the second tuner / demodulation unit 130T of the broadcast receiving apparatus 100, for example.

  For example, the hierarchical allocation shown in FIG. 4B (2) can be used as an example different from that shown in FIG. 4B (1) in the dual-polarized terrestrial digital broadcasting according to this embodiment. Hierarchical assignment may be used. Specifically, the mobile reception service of the current digital terrestrial broadcasting may be transmitted using the above-mentioned one segment of horizontal polarization as the A layer. (Note that the current mobile terrestrial broadcasting mobile reception service may transmit the same service in the above-mentioned one segment of vertical polarization. In this case, this is also treated as layer A.) It is configured to transmit an advanced digital terrestrial broadcasting service capable of transmitting video with the maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels in the above 5 segments of both waves and vertically polarized waves, a total of 10 segments. May be. Further, as the C layer, a digital terrestrial broadcasting service for transmitting an image having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels, which is the current terrestrial digital broadcasting, with the above-described seven segments of horizontal polarization may be transmitted. (Note that the terrestrial digital broadcasting service that transmits video having the maximum resolution of horizontal 1920 pixels × vertical 1080 pixels may transmit the same service in the above-mentioned seven segments of vertical polarization. Details of the transmission will be described later. The segment layer-assigned transmission wave can be received by, for example, the second tuner / demodulator 130T of the broadcast receiving apparatus 100 of the present embodiment.

  For example, the hierarchical assignment shown in FIG. 4B (3) can be used in the hierarchical division multiplexing terrestrial digital broadcasting and the current terrestrial digital broadcasting according to the present embodiment. Specifically, when used in hierarchical division multiplex digital terrestrial broadcasting, the mobile reception service of the current terrestrial digital broadcasting may be transmitted in one segment in the figure as layer A. Furthermore, it may be configured to transmit an advanced terrestrial digital broadcast service capable of transmitting an image having a maximum resolution of the number of pixels exceeding the horizontal 1920 pixels × vertical 1080 pixels in 12 segments in the figure as the B layer. The segment layer-assigned transmission wave can be received by, for example, the third tuner / demodulator 130L of the broadcast receiving apparatus 100 of the present embodiment. When used in the current terrestrial digital broadcasting, the mobile reception service of the current terrestrial digital broadcast may be transmitted in one segment in the figure as the A layer, and the current terrestrial digital broadcast in the 12 segments in the figure as the B layer. What is necessary is just to transmit the terrestrial digital broadcast service which transmits the image | video which makes horizontal 1920 pixels x vertical 1080 pixels the maximum resolution. The transmission wave of the segment layer assignment can be received by the first tuner / demodulation unit 130C of the broadcast receiving apparatus 100 of the present embodiment, for example.

  FIG. 4C shows an example of a system on the broadcast station side that realizes an OFDM transmission wave generation process that is a digital broadcast wave of the dual-polarized terrestrial digital broadcast and the hierarchical division multiplexed terrestrial digital broadcast according to the present embodiment. The information source encoding unit 411 encodes video / audio / various data. The multiplexing unit / conditional reception processing unit 415 multiplexes the video / audio / various data encoded by the information source encoding unit 411, and appropriately executes processing corresponding to the limited reception and outputs it as a packet stream. To do. A plurality of information source encoding units 411 and multiplexing / conditional reception processing units 415 can exist in parallel, and generate a plurality of packet streams. The transmission path encoding unit 416 remultiplexes the plurality of packet streams into one packet stream, performs transmission path encoding processing, and outputs the result as an OFDM transmission wave. The configuration shown in FIG. 4C is common to the ISDB-T scheme as a configuration for realizing the OFDM transmission wave generation process, although details of the information source coding and transmission path coding schemes are different. Therefore, some of the plurality of information source encoding units 411 and multiplexing / conditional reception processing units 415 are configured for ISDB-T terrestrial digital broadcasting services, and some are advanced terrestrial digital broadcasting services. For this reason, a plurality of different digital terrestrial broadcasting service packet streams may be multiplexed by the transmission path encoding unit 416. When the multiplexing unit / restricted reception processing unit 415 is configured for an ISDB-T terrestrial digital broadcasting service, MPEG-2 TS, which is a TSP (Transport Stream Packet) stream defined by MPEG-2 Systems, is used. Just generate. In addition, when the multiplexing unit / conditional reception processing unit 415 is configured for advanced digital terrestrial broadcasting service, an MMT packet stream, a TLV stream including an MMT packet, or a TSP stream defined by another system is used. Just generate. Naturally, all of the plurality of information source encoding units 411 and multiplexing / conditional reception processing units 415 are configured for advanced digital terrestrial broadcasting services, and all packet streams multiplexed by the transmission path encoding unit 416 are advanced. A packet stream for a terrestrial digital broadcasting service may be used.

  FIG. 4D shows an example of the configuration of the transmission path encoding unit 416.

  First, FIG. 4D (1) will be described. FIG. 4D (1) shows the configuration of the transmission path encoding unit 416 when only the OFDM transmission wave of digital broadcasting of the current terrestrial digital broadcasting service is generated. The OFDM transmission wave transmitted with this configuration has, for example, the segment configuration of FIG. 4B (3). The packet stream input from the multiplexing unit / restricted reception processing unit 415 and subjected to the remultiplexing process is added with error correction redundancy, and various types such as byte interleaving, bit interleaving, time interleaving, and frequency interleaving. Interleaving is performed. Thereafter, processing by IFFT (Inverse Fast Fourier Transform) is performed together with the pilot signal, the TMCC signal, and the AC signal. After a guard interval is added, an OFDM transmission wave is obtained through orthogonal modulation. The outer code processing, power spreading processing, byte interleaving, inner code processing, and mapping processing are configured so that processing can be performed separately for each layer such as the A layer and the B layer. (Note that the current terrestrial digital broadcast service digital broadcast has two layers in operation, but can transmit up to three layers, so FIG. 4D (1) shows an example of three layers.) Modulation processing. The packet stream input from the multiplexing unit / restricted reception processing unit 415 may be multiplexed with information such as TMCC information, mode, guard interval ratio, and the like. Note that the packet stream input to the transmission path encoding unit 416 may be a TSP stream defined by MPEG-2 Systems as described above. The OFDM transmission wave generated with the configuration of FIG. 4D (1) can be received by, for example, the first tuner / demodulator 130C of the broadcast receiving apparatus 100 of the present embodiment.

  Next, FIG. 4D (2) will be described. FIG. 4D (2) shows the configuration of the transmission path encoding unit 416 when generating an OFDM transmission wave of dual-polarized terrestrial digital broadcasting according to the present embodiment. The OFDM transmission wave transmitted in this configuration has, for example, the segment configuration shown in FIG. 4B (1) or (2). Also in FIG. 4D (2), the packet stream input from the multiplexing unit / restricted reception processing unit 415 and subjected to the remultiplex processing is added with error correction redundancy, byte interleaving, bit interleaving, time Various interleaving processes such as interleaving and frequency interleaving are performed. Thereafter, IFFT processing is performed together with the pilot signal, TMCC signal, and AC signal. After the guard interval addition processing is performed, orthogonal modulation is performed to obtain an OFDM transmission wave.

  In the configuration example of FIG. 4D (2), the outer code processing, power spreading processing, byte interleaving, inner code processing, mapping processing, and time interleaving are performed separately for each layer such as the A layer, the B layer, and the C layer. Configure as possible. However, in the configuration example of FIG. 4D (2), not only the horizontally polarized (H) OFDM transmission wave but also the vertically polarized (V) OFDM transmission wave is generated, and the processing flow is divided into two systems. To do. When branching from the horizontal polarization (H) processing system to the vertical polarization (V) processing system, the same data as the horizontal polarization (H) processing system is branched to the vertical polarization (V) processing system. Whether the data different from the horizontal polarization (H) processing system is branched to the vertical polarization (V) processing system or the data is not branched to the vertical polarization (V) processing system is shown in FIG. Corresponding to the segment configuration described in 1) or (2), it can be different for each layer.

  The processes such as outer code, inner code, and mapping shown in the configuration of FIG. 4D (2) are performed in each process of the configuration of FIG. 4D (1) in addition to the processes compatible with the configuration of FIG. 4D (1). More advanced processing that is not employed can be used. Specifically, in the configuration shown in FIG. 4D (2), for the part where processing is performed for each layer, the current terrestrial digital broadcast mobile reception service and video with the maximum resolution of horizontal 1920 pixels × vertical 1080 pixels are displayed. In the layer where the current terrestrial digital broadcasting service to be transmitted is transmitted, processing compatible with the configuration of FIG. 4D (1) is performed for processing such as outer code, inner code, and mapping. In contrast, in the configuration shown in FIG. 4D (2), advanced terrestrial digital broadcasting capable of transmitting an image having a maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels for the portion to be processed for each layer. The service transmission layer may be configured to use higher-level processing that is not employed in each processing of the configuration in FIG. 4D (1) for processing such as outer code, inner code, and mapping.

  In addition, in the dual-polarized terrestrial digital broadcasting according to the present embodiment according to the present embodiment, the allocation of the terrestrial digital broadcast service to be transmitted can be switched according to the TMCC information described later. It is desirable that the processing such as the outer code, inner code, and mapping to be performed can be switched by TMCC information.

  As for the layer that transmits advanced terrestrial digital broadcasting services that can transmit video with the maximum resolution of horizontal 1920 pixels x vertical 1080 pixels, byte interleaving, bit interleaving, and time interleaving are the current terrestrial digital broadcasting. Processing compatible with the service may be performed, or more advanced processing may be performed. Alternatively, a part of the interleaving may be omitted for the layer transmitting the advanced digital terrestrial broadcasting service.

  Further, in the configuration of FIG. 4D (2), the current terrestrial digital broadcasting mobile reception service and the current terrestrial digital broadcasting service that transmits video with a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels are transmitted. The source input stream may be a TSP stream defined by MPEG-2 Systems employed in the current terrestrial digital broadcasting among the packet streams input to the transmission path encoding unit 416. The input stream serving as the source of the layer for transmitting the advanced digital terrestrial broadcasting service having the configuration of FIG. 4D (2) is a TLV including an MMT packet stream or an MMT packet among packet streams input to the transmission path encoding unit 416. The stream may be a stream defined by a system other than the TSP stream defined by MPEG-2 Systems. However, a TSP stream defined by MPEG-2 Systems may be employed in advanced terrestrial digital broadcasting services.

  In the configuration of FIG. 4D (2) described above, until the OFDM transmission wave is generated from the input stream, the mobile reception service of the current terrestrial digital broadcasting and the video having the maximum resolution of horizontal 1920 pixels × vertical 1080 pixels are transmitted. In the layer where the current terrestrial digital broadcasting service is transmitted, the stream format and processing compatible with the current terrestrial digital broadcasting are maintained. As a result, one of the horizontally polarized OFDM transmission wave and the vertically polarized OFDM transmission wave generated in the configuration of FIG. 4D (2) is received by the existing receiver of the existing digital terrestrial broadcasting service. In this case, the terrestrial digital broadcasting service broadcasts the current terrestrial digital broadcasting mobile reception service and the layer in which the current terrestrial digital broadcasting service that transmits video with a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels is transmitted. It becomes possible to correctly receive and demodulate the signal.

  In the configuration of FIG. 4D (2), the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels is set to the maximum resolution in the layer using both the horizontally polarized OFDM transmission wave and the vertically polarized OFDM transmission wave. It is possible to transmit an advanced digital terrestrial broadcast service capable of transmitting the video, and the broadcast signal of the advanced digital terrestrial broadcast service can be received and demodulated by the broadcast receiving apparatus 100 according to the embodiment of the present invention. It becomes.

  That is, in the configuration of FIG. 4D (2), digital broadcasting can be suitably received and demodulated by both a broadcast receiving apparatus corresponding to an advanced terrestrial digital broadcasting service and a receiving apparatus of an existing terrestrial digital broadcasting service. Broadcast waves can be generated.

  Next, FIG. 4D (3) will be described. FIG. 4D (3) shows the configuration of the transmission path encoding unit 416 when generating an OFDM transmission wave of layered division multiple terrestrial digital broadcasting according to the present embodiment. Also in FIG. 4D (3), the packet stream input from the multiplexing unit / conditional reception processing unit 415 and subjected to the re-multiplexing process is added with error correction redundancy, byte interleaving, bit interleaving, time Various interleaving processes such as interleaving and frequency interleaving are performed. Thereafter, IFFT processing is performed together with the pilot signal, TMCC signal, and AC signal, and after adding a guard interval, the signal is subjected to orthogonal modulation to become an OFDM transmission wave.

  However, in the configuration of FIG. 4D (3), a modulated wave transmitted in the upper layer and a modulated wave transmitted in the lower layer are respectively generated and multiplexed, and then an OFDM transmission wave that is a digital broadcast wave is generated. The processing system shown in the upper side of the configuration of FIG. 4D (3) is a processing system for generating a modulated wave transmitted in the upper layer, and the processing system shown in the lower side generates a modulated wave transmitted in the lower layer. It is a processing system for doing this. The maximum resolution of the data transmitted through the processing system for generating the modulated wave transmitted in the upper layer of FIG. 4D (3) is the current mobile terrestrial broadcasting mobile reception service and horizontal 1920 pixels × vertical 1080 pixels. Various processes in the processing system for generating a modulated wave transmitted in the upper layer in FIG. 4D (3), which is the current terrestrial digital broadcasting service for transmitting video, are the same as the various processes in FIG. 4D (1) or This is a compatible process. The modulated wave transmitted in the upper layer of FIG. 4D (3) has, for example, the segment configuration of FIG. 4B (3) as in the transmission wave of FIG. 4D (1). Therefore, the modulated wave transmitted in the upper layer of FIG. 4D (3) is the current terrestrial digital broadcasting mobile reception service or the current terrestrial digital broadcasting service that transmits video with the maximum resolution of horizontal 1920 pixels × vertical 1080 pixels. Is a digital broadcast wave that is compatible with. On the other hand, the data transmitted through the processing system for generating the modulated wave transmitted in the lower layer of FIG. 4D (3) is an image having the maximum resolution with the number of pixels exceeding 1920 horizontal pixels × 1080 vertical pixels. It is an advanced terrestrial digital broadcasting service that can be transmitted, and is configured to use, for example, more advanced processing that is not employed in each processing of the configuration of FIG. 4D (1) for processing such as outer code, inner code, and mapping. Just do it.

  The modulated wave transmitted in the lower layer of FIG. 4D (3) is, for example, an advanced ground capable of transmitting an image having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels with all 13 segments as the A layer. It may be assigned to a digital broadcasting service. 4B (3), the mobile reception service of the current digital terrestrial broadcasting is transmitted in the 1-segment A layer, and the pixels exceed the horizontal 1920 pixels × vertical 1080 pixels in the 12-segment B layer. An advanced digital terrestrial broadcasting service capable of transmitting a video having a maximum number of resolutions may be transmitted. In the latter case, as in FIG. 4D (2), the processing may be switched for each layer such as the A layer and the B layer from the outer code process to the time interleave process. The layer that transmits the mobile reception service of the current terrestrial digital broadcast needs to maintain a process compatible with the current terrestrial digital broadcast, as in the description of FIG. 4D (2).

  In the configuration of FIG. 4D (3), an OFDM transmission wave that is a terrestrial digital broadcast wave in which a modulated wave transmitted in the upper layer and a modulated wave transmitted in the lower layer are multiplexed is generated. Since the technology for separating the modulated wave transmitted in the upper layer from the OFDM transmission wave is also installed in the existing receiver of the existing digital terrestrial broadcasting service, it is included in the modulated wave transmitted in the upper layer, The broadcasting signal of the current digital terrestrial broadcasting mobile reception service and the current digital terrestrial broadcasting service that transmits video with the maximum resolution of horizontal 1920 pixels x vertical 1080 pixels are correctly received by the existing digital terrestrial broadcasting service receivers. Received and demodulated. On the other hand, a broadcast signal of an advanced terrestrial digital broadcasting service capable of transmitting an image having a maximum resolution of the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels included in the modulated wave transmitted in the lower layer is The broadcast receiving apparatus 100 according to the embodiment of the invention can receive and demodulate.

  That is, in the configuration shown in FIG. 4D (3), digital broadcasting that can be suitably received and demodulated by both a broadcast receiving apparatus compatible with advanced terrestrial digital broadcasting services and an existing receiving apparatus of existing terrestrial digital broadcasting services. Broadcast waves can be generated. 4D (3), unlike the configuration of FIG. 4D (2), it is not necessary to use a plurality of polarized waves, and an OFDM transmission wave that can be received more easily can be generated.

  In the OFDM transmission wave generation process according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, the compatibility of the SFN to the inter-station distance and the resistance to the Doppler shift in the mobile reception. In consideration of the above, three types of modes with different numbers of carriers are prepared. Another mode with a different number of carriers may be further prepared. In a mode with a large number of carriers, the effective symbol length becomes long, and if the guard interval ratio (guard interval length / effective symbol length) is the same, the guard interval length becomes long, and it is possible to have resistance against multipath with a long delay time difference. It is. On the other hand, in the mode where the number of carriers is small, the carrier interval is wide, and it is possible to make it less susceptible to inter-carrier interference due to Doppler shift that occurs in mobile reception or the like.

  In the OFDM transmission wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, the carrier modulation scheme for each layer composed of one or a plurality of OFDM segments, Parameters such as code coding rate and time interleave length can be set. FIG. 4E shows an example of transmission parameters for each segment of the OFDM segment identified in the mode of the system according to the present embodiment. Note that the carrier modulation scheme in the figure refers to the modulation scheme of the “data” carrier. The SP signal, CP signal, TMCC signal, and AC signal employ a modulation scheme different from the modulation scheme of the “data” carrier. Since these signals are signals that are more resistant to noise than the amount of information, they are small constellations (BPSK or A modulation system that performs mapping in DBPSK (that is, two states) is employed to increase resistance to noise.

  Each numerical value of the number of carriers is a value when the numerical value on the left side of the oblique line is set to QPSK, 16QAM, 64QAM or the like as the carrier modulation method, and the numerical value on the right side of the oblique line is a value when DQPSK is set as the carrier modulation method. Value. In the figure, the underlined parameters are parameters that are not compatible with the current mobile reception service for terrestrial digital broadcasting. Specifically, 256 QAM, 1024 QAM, and 4096 QAM, which are modulation schemes for “data” carriers, are not employed in the current terrestrial digital broadcasting service. Therefore, in the processing in the layer that needs to be compatible with the current terrestrial digital broadcasting service in the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, The “data” carrier modulation schemes 256QAM, 1024QAM and 4096QAM are not used. For “data” carriers transmitted at a layer corresponding to advanced terrestrial digital broadcasting services, QPSK (number of states 4), 16QAM (number of states 16), 64QAM (states) compatible with the current terrestrial digital broadcasting service In addition to a modulation scheme such as Equation 64), a multilevel modulation scheme such as 256QAM (256 states), 1024 QAM (1024 states), and 4096 QAM (4096 states) may be applied. Moreover, you may employ | adopt the modulation system different from these modulation systems.

  Note that the pilot symbol (SP or CP) carrier modulation method may be BPSK (number of states 2) compatible with the current digital terrestrial broadcasting service. As a modulation method for the AC carrier and the TMCC carrier, DBPSK (number of states 2) compatible with the current digital terrestrial broadcasting service may be used.

  In addition, as an inner code processing method, the LDPC code is not adopted in the current terrestrial digital broadcasting service. Therefore, in the processing in the layer that needs to be compatible with the current terrestrial digital broadcasting service in the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, LDPC codes are not used. An LDPC code may be applied as an inner code to data transmitted in a layer corresponding to an advanced terrestrial digital broadcasting service. In addition, as a method of outer code processing, the BCH code is not adopted in the current terrestrial digital broadcasting service. Therefore, in the processing in the layer that needs to be compatible with the current terrestrial digital broadcasting service in the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, A BCH code is not used. A BCH code may be applied as an outer code to data transmitted in a layer corresponding to an advanced terrestrial digital broadcasting service.

  4F shows transmission signal parameters in units of one physical channel (6 MHz bandwidth) in the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of this embodiment. An example is shown. In the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) of the present embodiment, basically, for compatibility with the current digital terrestrial broadcasting service, In principle, parameters compatible with the current digital terrestrial broadcasting service are adopted as the parameters in FIG. 4F. However, when all the segments are allocated to the advanced terrestrial digital broadcasting service in the modulated wave transmitted in the lower layer of FIG. 4D (3), it is necessary to maintain compatibility with the existing terrestrial digital broadcasting service in the modulated wave Absent. Therefore, in this case, parameters other than the parameters shown in FIG. 4F may be used for the modulated wave transmitted in the lower layer of FIG. 4D (3).

  Next, the carrier of the OFDM transmission wave according to the present embodiment will be described. The carrier of the OFDM transmission wave according to the present embodiment includes a carrier for transmitting data such as video and audio, a carrier for transmitting a pilot signal (SP, CP, AC1, AC2) serving as a reference for demodulation, There is a carrier through which a TMCC signal which is information such as a carrier modulation format and a convolutional coding rate is transmitted. For these transmissions, the number of carriers corresponding to 1/9 of the number of carriers per segment is used. In addition, a concatenated code is used for error correction, a punctured code with a shortened Reed-Solomon (204,188) code for the outer code, a constraint length of 7 for the inner code, and a coding rate of 1/2 as the mother code. A convolutional code is adopted. Different coding may be used for both the outer code and the inner code. The information rate varies depending on parameters such as a carrier modulation format, a convolutional coding rate, and a guard interval ratio.

  Further, 204 symbols are defined as one frame, and an integer number of TSPs are included in one frame. The transmission parameter is switched at the boundary of this frame.

  Pilot signals that serve as demodulation references include SP (scattered pilot), CP (continuous pilot), AC (auxiliary channel) 1, and AC2. FIG. 4G shows an example of an arrangement image of a pilot signal in a segment in the case of synchronous modulation (QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, 4096QAM, etc.). The SP is inserted into a synchronous modulation segment and transmitted once every 12 carriers in the carrier number (frequency axis) direction and once every 4 symbols in the OFDM symbol number (time axis) direction. Since the SP amplitude and phase are known, it can be used as a reference for synchronous demodulation. FIG. 4H shows an example of an arrangement image in a segment such as a pilot signal in the case of differential modulation (DQPSK or the like). CP is a continuous signal inserted at the left end of the segment of differential modulation and is used for demodulation.

  AC1 and AC2 carry information on the CP, and are used to transmit information for broadcasters in addition to the role of pilot signals. It may be used for transmission of other information.

  The arrangement images shown in FIGS. 4G and 4H are examples in the case of mode 3, and the carrier numbers are 0 to 431, but in the case of mode 1 and mode 2, they are 0 to 107 or 0, respectively. To 215. In addition, carriers for transmitting AC1, AC2, and TMCC may be determined in advance for each segment. It is assumed that carriers that transmit AC1, AC2, and TMCC are randomly arranged in the frequency direction in order to reduce the influence of periodic dips on transmission path characteristics due to multipath.

[TMCC signal]
The TMCC signal transmits information (TMCC information) related to the demodulation operation of the receiver, such as the layer configuration and transmission parameters of the OFDM segment. The TMCC signal is transmitted on a carrier for TMCC transmission defined in each segment. FIG. 5A shows an example of TMCC carrier bit allocation. The TMCC carrier is composed of 204 bits (B0 to B203). B0 is a demodulation reference signal for the TMCC symbol and has a predetermined amplitude and phase reference. B1 to B16 are synchronization signals and are composed of 16-bit words. Two types of synchronization signals, w0 and w1, are defined, and w0 and w1 are alternately transmitted for each frame. B17 to B19 are used to identify the segment format, and identify whether each segment is a differential modulation unit or a synchronous modulation unit. In B20 to B121, TMCC information is described. B122 to B203 are parity bits.

  The TMCC information of the OFDM transmission wave according to the present embodiment includes, for example, system identification, transmission parameter switching index, activation control signal (emergency warning broadcast activation flag), current information, next information, frequency conversion processing identification, What is necessary is just to comprise so that the information for assisting the demodulation and decoding operation | movement of a receiver, such as physical channel number identification, main signal identification, 4K signal transmission hierarchy identification, additional hierarchy transmission identification, etc. may be included. Current information indicates the current layer configuration and transmission parameters, and next information indicates the layer configuration and transmission parameters after switching. Transmission parameter switching is performed in units of frames. FIG. 5B shows an example of bit allocation of TMCC information. FIG. 5C shows an example of the configuration of transmission parameter information included in current information / next information. The connection transmission phase correction amount is control information used in the case of terrestrial digital audio broadcasting ISDB-TSB (ISDB for Terrestrial Sound Broadcasting) and the like having a common transmission method, and detailed description thereof is omitted here.

  FIG. 5D shows an example of bit assignment for system identification. Two bits are assigned to the system identification signal. In the case of the current terrestrial digital television broadcasting system, “00” is set. In the case of a terrestrial digital audio broadcasting system with a common transmission method, “01” is set. In the case of an advanced terrestrial digital television broadcasting system such as a dual-polarized terrestrial digital broadcast or a hierarchical division multiplex terrestrial digital broadcast according to this embodiment, “10” is set. In advanced terrestrial digital television broadcasting systems, 2K broadcast programs (horizontal 1920 pixels × vertical 1080 pixels video broadcast programs, and lower resolution video broadcasts are transmitted by means of polarization wave transmission or hierarchical division multiplexing. It is possible to simultaneously transmit a 4K broadcast program (horizontal 1920 pixels × vertical 1080 pixels video broadcast program) within the same service.

  The transmission parameter switching index is used to notify the receiver of the switching timing by counting down when switching transmission parameters. This index is a value of “1111” in normal times, and when switching transmission parameters, 1 is subtracted for each frame from 15 frames before switching. The switching timing is the next frame synchronization for sending “0000”. The value of the index returns to “1111” after “0000”. One or more of parameters such as system identification of TMCC information shown in FIG. 5B, transmission parameters included in current information / next information, frequency conversion processing identification, main signal identification, 4K signal transmission layer identification, additional layer transmission identification, etc. When switching between, count down. When switching only the activation control signal of TMCC information, the countdown is not performed.

  The activation control signal (emergency warning broadcast activation flag) is “1” when the activation control is performed on the receiver in the emergency warning broadcasting, and “0” when the activation control is not performed. To do.

  The partial reception flag for each current information / next information is set to “1” when the segment at the center of the transmission band is set to partial reception, and is set to “0” otherwise. When segment 0 is set for partial reception, the layer is defined as layer A. If there is no next information, the partial reception flag is set to “1”.

  FIG. 5E shows an example of bit allocation for the carrier modulation mapping scheme (data carrier modulation scheme) in each layer transmission parameter for each current information / next information. When this parameter is “000”, it indicates that the modulation method is DQPSK. “001” indicates that the modulation method is QPSK. “010” indicates that the modulation method is 16QAM. “011” indicates that the modulation method is 64QAM. “100” indicates that the modulation method is 256QAM. “101” indicates that the modulation method is 1024QAM. “110” indicates that the modulation method is 4096 QAM. If there is no unused hierarchy or next information, “111” is set in this parameter.

  For setting the coding rate, the length of time interleaving, and the like, each parameter may be set according to the organization information of each layer for each current information / next information. The number of segments indicates the number of segments in each layer as a 4-bit numerical value. If there is no unused hierarchy or next information, “1111” is set. Note that settings such as the mode and guard interval ratio are uniquely detected on the receiver side, and therefore transmission using TMCC information is not necessary.

  FIG. 5F shows an example of bit assignment for frequency conversion process identification. For the frequency conversion processing identification, the frequency conversion processing (in the case of the dual-polarization transmission method) and the frequency conversion amplification processing (in the case of the hierarchical division multiplexing transmission method) described later are performed in the conversion unit 201T and the conversion unit 201L in FIG. 2A. In this case, “0” is set. When frequency conversion processing or frequency conversion amplification processing is not performed, “1” is set. For example, this parameter is set to “1” when transmitted from a broadcasting station, and when the frequency conversion process or the frequency conversion amplification process is executed by the conversion unit 201T or the conversion unit 201L, the conversion unit 201T or the conversion unit 201L. In this case, rewriting to “0” may be performed. In this way, when the second tuner / demodulator 130T and the third tuner / demodulator 130L of the broadcast receiving apparatus 100 receive the frequency conversion process identification bit is “0”, the OFDM It can be identified that the frequency conversion processing or the like has been performed after the transmission wave is transmitted from the broadcasting station.

  In the dual-polarized terrestrial digital broadcasting according to the present embodiment, the frequency conversion processing identification bit may be set or rewritten for each of a plurality of polarized waves. For example, if both of the plurality of polarized waves are not frequency-converted by the conversion unit 201T in FIG. 2A, the frequency conversion processing identification bit included in both of the OFDM transmission waves may be left as “1”. If only one polarization of the plurality of polarizations is frequency-converted by the conversion unit 201T, the frequency conversion processing identification bit included in the OFDM transmission wave of the frequency-converted polarization is “0” in the conversion unit 201T. " Further, if both of the plurality of polarized waves are frequency-converted by the conversion unit 201T, the frequency conversion processing identification bit included in the OFDM transmission wave of both polarizations subjected to the frequency conversion is set to “0” in the conversion unit 201T. You can rewrite it. In this way, the broadcast receiving apparatus 100 can identify the presence / absence of frequency conversion for each polarization among a plurality of polarizations.

  Since the frequency conversion processing identification bit is not defined in the current terrestrial digital broadcasting, the terrestrial digital broadcasting receiving apparatus already used by the user will ignore it. However, the bit may be introduced into a new terrestrial digital broadcasting service that transmits an image having a maximum resolution of horizontal 1920 pixels × vertical 1080 pixels improved from the current terrestrial digital broadcasting. In this case, the first tuner / demodulator 130C of the broadcast receiving apparatus 100 according to the embodiment of the present invention may also be configured as a first tuner / demodulator corresponding to the new digital terrestrial broadcasting service.

  As a modification, when transmitting from a broadcasting station on the assumption that frequency conversion processing or frequency conversion amplification processing is performed on the OFDM transmission wave by the conversion unit 201T or the conversion unit 201L in FIG. 2A. It may be set to “0” in advance. If the received broadcast wave is not an advanced terrestrial digital broadcast service, this parameter may be set to “1”.

  FIG. 5G shows an example of bit assignment for physical channel number identification. The physical channel number identification is composed of a 6-bit code, and identifies the physical channel number (13 to 52 ch) of the received broadcast wave. If the received broadcast wave is not an advanced terrestrial digital broadcast service, this parameter is set to “111111”. The physical channel number identification bit is not defined in the current terrestrial digital broadcast, and the current terrestrial digital broadcast receiver acquires the physical channel number of the broadcast wave specified on the broadcast station side from the TMCC signal, AC signal, etc. I couldn't. In the broadcast receiving apparatus 100 according to the embodiment of the present invention, the received OFDM transmission wave physical channel number identification bit is used to demodulate a carrier other than a TMCC signal or an AC signal without demodulating the carrier. The physical channel number set by the broadcasting station can be grasped. Note that the physical channels of 13ch to 52ch are assigned in advance to a frequency band of 470 to 710 MHz with a bandwidth of 6 MHz per channel. Therefore, the fact that the broadcast receiver 100 can grasp the physical channel number of the OFDM transmission wave based on the physical channel number identification bit means that the frequency band in which the OFDM transmission wave was transmitted in the air as a terrestrial digital broadcast wave is understood. It means that you can do it.

  In the dual-polarized terrestrial digital broadcasting according to the present embodiment, in the process of generating an OFDM transmission wave on the broadcasting station side, the physical channel number is assigned to each of a plurality of polarization pairs in the bandwidth that originally constitutes one physical channel. It is only necessary to arrange identification bits and assign the same physical number. Here, depending on the installation environment of the broadcast receiving apparatus 100, the conversion unit 201T in FIG. 2A may convert only the frequency of one of the plurality of polarizations. Thereby, when the frequency of each of the plurality of polarization pairs at the time of reception by the broadcast receiving device 100 is different from each other, the fact that the plurality of polarizations having different frequencies was originally a pair. If it cannot be grasped by any method, the broadcast receiver will not be able to demodulate advanced terrestrial digital broadcasting using both polarizations of polarized terrestrial digital broadcasting. Even in such a case, if the above-described physical channel number identification bits are used, if the transmission wave having the same physical channel number identification bits in the broadcast receiving apparatus 100 exists at a plurality of different frequencies, the broadcast station side originally It can be identified as a transmission wave transmitted as a polarization pair constituting one physical channel. As a result, it is possible to realize advanced terrestrial digital broadcasting demodulation of dual-polarized terrestrial digital broadcasting using a plurality of transmission waves having the same value.

  FIG. 5H shows an example of bit assignment for main signal identification. In this example, the main signal identification bit is arranged in bit B117.

  When the transmitted OFDM transmission wave is a transmission wave of dual-polarized terrestrial digital broadcasting, this parameter is set to “1” in the TMCC information of the transmission wave transmitted with the main polarization. It is set to “0” in the TMCC information of the transmission wave transmitted with the sub polarization. The transmission wave transmitted with the main polarization is the same polarization direction of the vertical polarization signal and the horizontal polarization signal that is used for transmission of the current digital terrestrial broadcasting service. Refers to a polarization signal. In other words, in areas where transmission with horizontal polarization is adopted in the current terrestrial digital broadcasting service, horizontal polarization is the main polarization in polarization dual-use terrestrial digital broadcasting service, and vertical polarization is a secondary polarization. Become a wave. Also, in areas where transmission with vertical polarization is adopted in the current digital terrestrial broadcasting service, vertical polarization is the main polarization in polarization dual-use terrestrial digital broadcasting service, and polarization with horizontal polarization as a secondary. It becomes.

  In the broadcast receiving apparatus 100 that has received the transmission wave of the dual-polarized terrestrial digital broadcast according to the embodiment of the present invention, the received transmission wave is transmitted with the main polarization at the time of transmission by using the main signal identification bit. It is possible to discriminate whether it was transmitted with sub-polarization. For example, if the identification processing of the main polarization and the sub polarization is used, at the time of the initial scan to be described later, the transmission wave transmitted with the main polarization is first scanned and transmitted with the main polarization. After the transmission wave initial scan is completed, it is possible to perform processing such as performing an initial scan of the transmission wave transmitted with the sub-polarized wave.

The details of the configuration example of the polarized terrestrial digital broadcasting layer and segment and the digital broadcasting service to be transmitted according to the present embodiment will be described later. When transmitting a digital broadcasting service and transmitting an advanced digital terrestrial service in a hierarchy that includes segments included in both the main polarization and the sub-polarization, an initial scan of the transmission wave transmitted first in the main polarization Complete the initial scan of the current terrestrial digital broadcasting service, and then perform the initial scan of the transmitted wave transmitted with the sub-polarization to perform the initial scan of the advanced terrestrial digital broadcasting service. Also good. In this way, the initial scan of the advanced terrestrial digital broadcast service can be performed after the completion of the initial scan of the current terrestrial digital broadcast service, and the setting by the initial scan of the current terrestrial digital broadcast service can be performed. This can be reflected in the setting by the initial scan of the broadcast service, which is preferable.
Note that the definition of the meanings of “1” and “0” of the main signal identification bits may be the reverse of the above description.

  Further, instead of the main signal identification bit, a polarization direction identification bit may be used as one parameter of TMCC information. Specifically, the polarization direction identification bit is set to “1” on the broadcast station side for transmission waves transmitted with horizontal polarization, and the polarization direction identification bit is set on the broadcast station side for transmission waves transmitted with vertical polarization. “0” should be used. In the broadcast receiving apparatus 100 that has received the transmission wave of the dual-polarized terrestrial digital broadcast according to the embodiment of the present invention, the polarization direction identification bit is used, so that the received transmission wave can be transmitted in any polarization direction. Can be identified. For example, if the identification process of the polarization direction is used, the initial scan of the transmission wave transmitted in the horizontal polarization is performed first in the initial scan described later, and the initial scan of the transmission wave transmitted in the horizontal polarization is performed. After the completion of the process, it is possible to perform processing such as performing an initial scan of a transmission wave transmitted with vertical polarization. The explanation of the effect of this processing is as follows. In the description of the main signal identification bit, the “main polarization” in the part related to the initial scan is read as “horizontal polarization”, and the “sub polarization” is called “vertical polarization”. Since it is only necessary to read it again, description thereof is omitted.

  The definition of the meaning of “1” and “0” of the polarization direction identification bit may be the reverse of the above description.

  Further, instead of the main signal identification bit described above, the first signal second signal identification bit may be used as one parameter of the TMCC information. Specifically, one of the horizontally polarized waves and the vertically polarized waves is defined as the first polarized wave, and the broadcast signal of the transmission wave transmitted by the first polarized wave is defined as the first signal. The first signal and the second signal identification bit may be set to “1” on the station side. Also, the other polarization is defined as the second polarization, the broadcast signal of the transmission wave transmitted with the second polarization is defined as the second signal, and the first signal second signal identification bit is set on the broadcast station side. “0” should be used. In the broadcast receiving apparatus 100 that has received the transmission wave of the dual-polarized terrestrial digital broadcasting according to the embodiment of the present invention, any of the received transmission waves can be transmitted during transmission by using the first signal second signal identification bit. It can be identified whether the signal was transmitted in the polarization direction. The first signal second signal identification bit is based on the above definition of the main signal identification bit, and the concept of “main polarization” and “sub polarization” is defined as “first polarization” and “second polarization”. The processing and effects in the broadcast receiving apparatus 100 are merely changed to “polarization”, and the “main polarization” in the portion related to the processing of the broadcast receiving apparatus 100 in the description of the main signal identification bit described above is changed to “first polarization”. “Wave” may be read and “sub-polarized wave” may be read as “second polarized wave”, and the description thereof will be omitted.

  The definition of the meanings of “1” and “0” of the first signal and the second signal identification bit may be the reverse of the above description.

  Next, in the transmission wave of the hierarchical division multiplexing terrestrial digital broadcasting according to the present embodiment, the upper and lower layer identification bits may be used as one parameter of the TMCC information instead of the main signal identification bits. Specifically, in the TMCC information of the modulated wave transmitted in the upper layer, the above-described upper and lower layer identification bit is set to “1”, and in the TMCC information of the transmission wave transmitted in the lower layer, the above-described upper and lower layer identification bit Should be set to “0”. If the received broadcast wave is not an advanced terrestrial digital broadcast service, this parameter may be set to “1”.

  In the hierarchical division multiplexing terrestrial digital broadcasting according to the present embodiment, here, a plurality of modulations originally transmitted in the upper layer and the lower layer of one physical channel in the generation process of the OFDM transmission wave on the broadcasting station side. Depending on the installation environment of the broadcast receiving apparatus 100, frequency conversion and signal amplification may be performed in the lower layer of the wave by the conversion unit 201L in FIG. 2A. In the broadcast receiving apparatus 100, when receiving the transmission wave of the hierarchical division multiplexed terrestrial digital broadcast, whether the modulated wave was originally transmitted in the upper layer based on the above-described upper and lower layer identification bits, or the lower layer It is possible to identify whether it was a modulated wave transmitted by. For example, the identification process enables an initial scan of advanced terrestrial digital broadcast services transmitted in the lower layer to be performed after completion of the initial scan of current terrestrial digital broadcast services transmitted in the upper layer. It is possible to reflect the setting by the initial scan of the digital broadcasting service in the setting by the initial scanning of the advanced terrestrial digital broadcasting service. Further, the third tuner / demodulation unit 130L of the broadcast receiving apparatus 100 can also be used for switching the processing of the demodulation unit 133S and the demodulation unit 133L based on the identification result.

In the description of the dual-polarization transmission system in each of the following embodiments, an example in which horizontal polarization is the main polarization and vertical polarization is the sub-polarization will be described as an example unless otherwise specified. However, the relationship between main and sub may be reversed for horizontal polarization and vertical polarization.
FIG. 5I shows an example of bit allocation for 4K signal transmission layer identification.

  When the broadcast wave to be transmitted is the transmission wave of the dual-polarized terrestrial digital broadcasting service according to the present embodiment, the 4K signal transmission layer identification bits are the horizontal polarization signal and the vertical polarization for each of the B layer and the C layer. It suffices to indicate whether or not to transmit a 4K broadcast program using both signals. One bit is assigned to each of the settings of the B layer and the C layer. For example, in the B layer and the C layer, when the 4K signal transmission layer identification bit for each layer is “0”, the 4K broadcast program uses both the horizontally polarized signal and the vertically polarized signal in the layer. It is sufficient to show that the transmission is performed. In the B layer and the C layer, when the 4K signal transmission layer identification bit for each layer is “1”, a 4K broadcast program that uses both the horizontal polarization signal and the vertical polarization signal is transmitted in the layer. It may be shown that there is no. In this way, in the broadcast receiving apparatus 100, using the 4K signal transmission layer identification bits, the B layer and the C layer use both the horizontal polarization signal and the vertical polarization signal in each layer to achieve 4K. Whether or not to transmit a broadcast program can be identified.

  When the broadcast wave to be transmitted is the broadcast wave of the hierarchical division multiplexing terrestrial digital broadcasting service of this embodiment, the 4K signal transmission layer identification bit indicates whether or not the 4K broadcast program is transmitted in the lower layer. Should be shown. When B119 of this parameter is “0”, the 4K broadcast program is transmitted in the lower layer. When B119 of this parameter is “1”, the 4K broadcast program is not transmitted in the lower layer. In this way, the broadcast receiving apparatus 100 can identify whether or not to transmit the 4K broadcast program in the lower layer using the 4K signal transmission layer identification bit.

  When this parameter is “0”, it is possible to adopt a NUC (Non-Uniform Constellation) modulation scheme in addition to the basic modulation scheme shown in FIG. 5C as the carrier modulation mapping scheme. In this case, it is possible to transmit the current / next information of the transmission parameter additional information related to the B layer / C layer using AC1 or the like.

  If the broadcast wave to be transmitted is not an advanced terrestrial digital broadcast service, each of these parameters may be set to “1”.

  The definition of “0” and “1” of the 4K signal transmission layer identification bits described above may be reversed from the above description.

  FIG. 5J shows an example of bit allocation for additional layer transmission identification. The additional layer transmission identification bit indicates that the broadcast wave to be transmitted is the dual-polarization terrestrial digital broadcasting service of this embodiment, and the virtual wave is transmitted for each of the B layer and the C layer of the transmission wave transmitted with the sub polarization. What is necessary is just to show whether it uses as a D hierarchy or a virtual E hierarchy.

  For example, in the example shown in the figure, the bit arranged in B120 is a D layer transmission identification bit. When this parameter is “0”, the B layer transmitted by the sub polarization is used as the virtual D layer. To be precise, the segment group having the same segment number as the segment belonging to the B layer transmitted by the main polarization among the segments transmitted by the sub polarization is transmitted by the main polarization. This means that it is treated as a D hierarchy that is different from the B hierarchy. When this parameter is “1”, the B layer transmitted by the sub polarization is not used as the virtual D layer but is used as the B layer.

  Further, for example, the bit arranged in B121 is an E layer transmission identification bit. When this parameter is “0”, the C layer transmitted by the sub polarization is used as the virtual E layer. To be precise, the segment group having the same segment number as the segment belonging to the C layer transmitted by the main polarization among the segments transmitted by the sub polarization is transmitted by the main polarization. This means that it is handled as an E hierarchy that is different from the C hierarchy. When this parameter is “1”, the C layer transmitted by the sub polarization is not used as the virtual E layer, but is used as the C layer.

  In this way, in the broadcast receiving apparatus 100, using the additional layer transmission identification bits (D layer transmission identification bits and / or E layer transmission identification bits), the D layer and the E layer transmitted by the sub polarization. Can be identified. That is, in the terrestrial digital broadcasting according to the present embodiment, by using the additional layer transmission identification parameter shown in FIG. 5J, the current terrestrial digital broadcasting is limited to the three layers of the A layer, the B layer, and the C layer. New hierarchies (D hierarchy and E hierarchy in the example of FIG. 5J) can be operated beyond the number.

  When this parameter is “0”, parameters such as the carrier modulation mapping method, coding rate, and time interleaving length shown in FIG. It is possible to make it different. In this case, if current / next information of parameters such as a carrier modulation mapping method, a convolutional coding rate, a time interleave length, and the like regarding the virtual D layer / virtual E layer is transmitted using AC information (for example, AC1), On the broadcast receiving apparatus 100 side, it is possible to grasp parameters such as a carrier modulation mapping method, a convolutional coding rate, and a time interleaving length regarding the virtual D hierarchy / virtual E hierarchy.

  As a modification, when the additional layer transmission identification bit (D layer transmission identification bit and / or E layer transmission identification bit) is “0”, the current information / next of the TMCC information transmitted by the sub polarization is used. The transmission parameters of the B layer and / or the C layer of information may be switched to the meaning of the transmission parameters of the virtual D layer and / or the virtual E layer. In this case, when the virtual D layer and / or the virtual E layer is used, the main polarization uses the A layer, the B layer, and the C layer, and the transmission parameters of these layers are TMCC transmitted by the main polarization. The information may be transmitted as current information / next information. In the sub polarization, the A layer, the D layer, and the E layer are used, and the transmission parameters of these layers may be transmitted by the current information / next information of the TMCC information transmitted by the sub polarization. Even in this case, the broadcast receiving apparatus 100 can grasp parameters such as the carrier modulation mapping method, the convolutional coding rate, and the time interleaving length regarding the virtual D hierarchy / virtual E hierarchy.

  If the broadcast wave to be transmitted is not an advanced terrestrial digital broadcast service, or if it is an advanced terrestrial digital broadcast service and is a hierarchical division multiplexing transmission system, this parameter is configured to be set to “1”. Also good.

  The additional layer transmission identification parameter may be stored in both the main polarization TMCC information and the sub polarization TMCC information. Any of these processes can be realized.

  Further, the definition of “0” and “1” of the additional layer transmission identification bits described above may be reversed from the above description.

  When the above 4K signal transmission layer identification parameter indicates that a 4K broadcast program is transmitted in the B layer, the D layer transmission identification bit indicates that the B layer is used as a virtual D layer. Alternatively, the broadcast receiving apparatus 100 may ignore the D layer transmission identification bit. Similarly, when the 4K signal transmission layer identification parameter indicates that a 4K broadcast program is transmitted in the C layer, the E layer transmission identification bit indicates that the C layer is used as a virtual E layer. The broadcast receiving apparatus 100 may be configured to ignore the E layer transmission identification bit. If the priority order of the bits used in the determination process is clarified in this way, it is possible to prevent a determination process conflict in the broadcast receiving apparatus 100.

  In the broadcast wave to be transmitted, the above-described frequency conversion processing identification bit, physical channel number identification bit, main signal identification bit, 4K signal transmission identification bit, additional layer transmission identification bit, etc. In principle, all the bits should be set to “1” when the parameter is not “10”. Although the system identification parameter is not “10”, the frequency conversion processing identification bit, the physical channel number identification bit, the main signal identification bit, the 4K signal transmission identification bit, and the additional layer transmission identification Even if the bit is not “1”, the broadcast receiving apparatus 100 may be configured to ignore the bit that is not “1” and determine that all these bits are “1”. .

  Further, in the advanced terrestrial digital broadcasting service using the dual-polarization transmission method, the TMCC information of the transmission wave transmitted in the horizontal polarization and the TMCC information of the transmission wave transmitted in the vertical polarization may be the same. It may be different. Similarly, in the advanced terrestrial digital broadcasting service of the hierarchical division multiplexing transmission method, the TMCC information of the transmission wave transmitted in the upper layer and the TMCC information of the transmission wave transmitted in the lower layer may be the same. It may be different. In addition, the frequency conversion processing identification parameter, the main signal identification parameter, the additional layer transmission identification, and the like described above are described only in the TMCC information of the transmission wave transmitted in the sub-polarization and the transmission wave transmitted in the lower layer. May be.

  In the above description, the frequency conversion process identification parameter, the main signal identification parameter, the polarization direction identification parameter, the first signal second signal identification parameter, the upper and lower layer identification parameter, and the 4K signal transmission layer identification parameter In the above description, the parameter for identifying the additional layer transmission is included in the TMCC signal (TMCC carrier) and transmitted. However, these parameters may be transmitted by being included in an AC signal (AC carrier). That is, these parameters may be transmitted as a signal of a carrier (TMCC carrier, AC carrier, etc.) modulated by a modulation scheme that performs mapping with a smaller number of states than the data carrier modulation scheme.

[AC signal]
The AC signal is an additional information signal related to broadcasting, such as additional information related to transmission control of modulated waves or earthquake motion warning information. The earthquake motion warning information is transmitted using a segment 0 AC carrier. On the other hand, the additional information related to transmission control of the modulated wave can be transmitted using any AC carrier. FIG. 6A shows an example of bit assignment of an AC signal. The AC signal is composed of 204 bits (B0 to B203). B0 is a demodulation reference signal for an AC symbol and has a predetermined amplitude and phase reference. B1 to B3 are signals for identifying the configuration of the AC signal. B4 to B203 are used for transmission of additional information regarding transmission control of modulated waves or transmission of earthquake motion warning information.

  FIG. 6B shows an example of bit assignment for AC signal configuration identification. This parameter is set to “001” or “110” when earthquake motion warning information is transmitted using AC signals B4 to B203. The configuration identification parameter (“001” or “110”) when transmitting seismic motion warning information is the same code as the first 3 bits (B1 to B3) of the synchronization signal of the TMCC signal, and at the same timing as the TMCC signal. It is sent alternately every frame. Further, when this parameter has a value other than those described above, it indicates that additional information related to transmission control of the modulated wave is transmitted using B4 to B203 of the AC signal. Additional information related to transmission control of the modulated wave may be transmitted using B4 to B203 of the AC signal. In this case, “000” and “111”, “010” and “101”, or “011” and “100” are alternately transmitted for each frame as the configuration identification parameter of the AC signal.

  AC signals B4 to B203 are used for transmission of additional information relating to transmission control of modulated waves or transmission of earthquake motion warning information.

  Transmission of additional information related to modulation wave transmission control may be performed by various bit configurations. For example, the frequency conversion processing identification, physical channel number identification, main signal identification, 4K signal transmission layer identification, additional layer transmission identification, etc. described in the description of the TMCC signal may be changed to the TMCC signal or in addition to the TMCC signal. A bit may be assigned to the additional information related to the transmission control of the modulated wave of the signal for transmission. In this way, the broadcast receiving apparatus 100 can perform various identification processes already described in the description of the TMCC signal using these parameters. Also, transmission parameter additional information related to the transmission layer of the 4K broadcast program when any parameter of the 4K signal transmission layer identification is “0”, or virtual D when any parameter of the additional layer transmission identification is “0”. Current / next information of transmission parameters related to the hierarchy / virtual E hierarchy may be assigned. In this way, the broadcast receiving apparatus 100 can acquire the transmission parameters of each layer using these parameters, and can control the demodulation processing of each layer.

  The transmission of earthquake motion warning information may be performed by bit allocation shown in FIG. 6C. The earthquake motion warning information includes a synchronization signal, a start / end flag, an update flag, a signal identification, earthquake motion warning detailed information, a CRC, a parity bit, and the like. The synchronization signal is composed of a 13-bit code, and has the same code as the 13 bits (B4 to B16) excluding the first 3 bits of the synchronization signal of the TMCC signal. When the configuration identification of the AC signal indicates that seismic motion warning information is transmitted, the 16-bit code combining the configuration identification and the synchronization signal becomes the same 16-bit synchronization word as the TMCC synchronization signal. The start / end flag is composed of a 2-bit code as a start timing / end timing flag of the earthquake motion warning information. The start / end flag is changed from “11” to “00” when transmission of earthquake motion warning information is started, and is changed from “00” to “11” when transmission of earthquake motion warning information is completed. The update flag is composed of a 2-bit code, and every time a change occurs in the contents of a series of detailed seismic motion warning information transmitted when the start / end flag is “00”, “00” is set to “1” as an initial value. 』Increased by increments. It is assumed that “11” is followed by “00”. When the start / end flag is “11”, the update flag is also “11”.

  FIG. 6D shows an example of bit assignment for signal identification. The signal identification is composed of a 3-bit code and is used to identify the type of the detailed earthquake motion warning information. If this parameter is “000”, it means “earthquake motion warning detailed information (with applicable area)”. If this parameter is “001”, it means “earthquake motion warning detailed information (no relevant area)”. When this parameter is “010”, it means “seismic motion warning detailed information test signal (with applicable area)”. When this parameter is “011”, it means “test signal for detailed earthquake motion warning information (no relevant area)”. When this parameter is “111”, it means “no detailed earthquake motion warning information”. When the start / end flag is “00”, the signal identification is “000”, “001”, “010”, or “011”. When the start / end flag is “11”, the signal identification is “111”.

  The detailed information on earthquake motion warning is composed of an 88-bit code. When the signal identification is “000”, “001”, “010”, or “011”, the earthquake motion warning detailed information includes information on the current time at which the earthquake motion warning information is transmitted, information indicating the area subject to the earthquake motion warning, and earthquake motion. Transmits information such as latitude / longitude / seismic intensity of the epicenter of the earthquake subject to alarm. FIG. 6E shows an example of bit allocation of the detailed earthquake motion warning information when the signal identification is “000”, “001”, “010”, or “011”. Further, when the signal identification is “111”, it is possible to transmit a code or the like for identifying the broadcaster by using the bits of the detailed earthquake motion warning information. FIG. 6F shows an example of bit allocation of the detailed earthquake motion warning information when the signal identification is “111”.

  CRC is a code generated using a predetermined generator polynomial for B21 to B111 in the earthquake motion warning information. The parity bit is a code generated by the shortened code (187, 105) of the difference set cyclic code (273, 191) for B17 to B121 in the earthquake motion warning information.

  In the broadcast receiving apparatus 100, it is possible to perform various controls for coping with an emergency situation using the parameters related to the earthquake motion warning described in FIGS. 6C, 6D, 6E, and 6F. For example, it is possible to perform control for presenting information related to earthquake motion warnings, control for switching display contents with low priority to display related to earthquake motion warnings, control for terminating display of applications and switching to display related to earthquake motion warnings or broadcast program video, etc. is there.

  FIG. 6G shows an example of bit allocation of additional information related to modulation wave transmission control. Additional information related to modulation wave transmission control includes a synchronization signal, current information, next information, parity bits, and the like. The synchronization signal is composed of a 13-bit code, and has the same code as the 13 bits (B4 to B16) excluding the first 3 bits of the synchronization signal of the TMCC signal. When the configuration identification of the AC signal indicates that additional information related to transmission control of the modulated wave is transmitted, the 16-bit code combining the configuration identification and the synchronization signal is a 16-bit synchronization word similar to the TMCC synchronization signal. It becomes. The current information indicates current information of transmission parameter additional information when transmitting a 4K broadcast program in the B layer or the C layer, and transmission parameters related to the virtual D layer or the virtual E layer. The next information indicates transmission parameter additional information when a 4K broadcast program is transmitted in the B layer or the C layer, and information after switching of transmission parameters related to the virtual D layer or the virtual E layer.

  In the example of FIG. 6G, B18 to B30 of current information are current information of B layer transmission parameter additional information, and indicate current information of transmission parameter additional information when a 4K broadcast program is transmitted in the B layer. is there. Current information B31 to B43 is current information of C layer transmission parameter additional information, and indicates current information of transmission parameter additional information when a 4K broadcast program is transmitted in the C layer. Further, B70 to B82 of the next information are information after switching the transmission parameter of the B layer transmission parameter additional information, and after switching the transmission parameter of the transmission parameter additional information when transmitting the 4K broadcast program in the B layer. Information is shown. Further, B83 to B95 of the next information are information after switching the transmission parameter of the C layer transmission parameter additional information, and the information after switching the transmission parameter of the transmission parameter additional information when transmitting the 4K broadcast program in the C layer. Is shown. Here, the transmission parameter additional information is a transmission parameter related to modulation that is added to the transmission parameter of the TMCC information shown in FIG. Specific contents of the transmission parameter additional information will be described later.

  In the example of FIG. 6G, B44 to B56 of current information are current information of transmission parameters for the virtual D hierarchy when operating the virtual D hierarchy. Current information B57 to B69 is current information of transmission parameters for the virtual E hierarchy when the virtual E hierarchy is operated. Further, B96 to B108 of the next information is information after switching transmission parameters for the virtual D hierarchy when operating the virtual D hierarchy. Current information B109 to B121 is information after switching of transmission parameters for the virtual E hierarchy when the virtual E hierarchy is operated. The parameters stored in the transmission parameters for the virtual D layer and the transmission parameters for the virtual E layer may be the same as those shown in FIG. 5C.

  The virtual D hierarchy and the virtual E hierarchy are layers that do not exist in the current digital terrestrial broadcasting. The TMCC information shown in FIG. 5B needs to maintain compatibility with the current digital terrestrial broadcasting, so it is not easy to increase the number of bits. Therefore, in the embodiment of the present invention, the transmission parameters for the virtual D layer and the virtual E layer are stored not in the TMCC information but in the AC information as shown in FIG. 6G.

  As a result, it is possible to transmit information regarding the modulation of the new virtual D layer and virtual E layer to the receiving device while maintaining compatibility of the TMCC information with the current terrestrial digital broadcasting. As a result, in the case of using the B layer / C layer of the transmission wave transmitted by the sub-polarization as the virtual D layer / virtual E layer, which is a broadcast wave of the dual-polarized terrestrial digital broadcasting service according to the present embodiment In addition, the transmission parameters of the virtual D layer / virtual E layer of the transmission wave transmitted with the sub-polarization may be set differently from the transmission parameters of the B layer / C layer of the transmission wave transmitted with the main polarization. It becomes possible.

  When the virtual D hierarchy or the virtual E hierarchy is not used, there is no problem in ignoring the transmission parameter information about the unused hierarchy in the broadcast receiving apparatus 100. For example, for the virtual D hierarchy or the virtual E hierarchy, when the additional layer transmission identification parameter of the TMCC information in FIG. 5J indicates “1” (when the virtual D hierarchy / virtual E hierarchy is not used) 100 may be configured to ignore any value in the transmission parameter shown in FIG. 6G for the unused virtual D hierarchy or virtual E hierarchy.

  Next, details of the transmission parameter additional information described with reference to FIG. 6G will be described.

  FIG. 6H shows a specific example of transmission parameter additional information. The transmission parameter additional information can include an error correction method parameter, a constellation format parameter, and the like.

  The error correction method is a setting of what encoding method is used as the error correction method of the inner code and the outer code when a 4K broadcast program (advanced terrestrial digital broadcasting service) is transmitted in the B layer or the C layer. Indicates. FIG. 6I shows an example of bit allocation in the error correction method. When this parameter is “000”, a convolutional code is used as an inner code and a shortened RS code is used as an outer code when transmitting a 4K broadcast program in the B layer or the C layer. When this parameter is “001”, an LDPC code is used as an inner code and a BCH code is used as an outer code when transmitting a 4K broadcast program in the B layer and the C layer. Further, other combinations may be set and selected.

  Further, when transmitting 4K broadcast programs in the B layer and the C layer, it is possible to adopt not only a uniform constellation but also a non-uniform constellation (NUC) as a carrier modulation mapping method. FIG. 6J shows an example of constellation format bit allocation. When this parameter is “000”, the carrier modulation mapping method selected by the transmission parameter of TMCC information is applied by uniform constellation. When this parameter is any one of “001” to “111”, the carrier modulation mapping method selected by the transmission parameter of the TMCC information is applied in a non-uniform constellation. Note that when the non-uniform constellation is applied, the optimum value of the non-uniform constellation varies depending on the type of error correction method and the coding rate thereof. Therefore, when the constellation format parameter is any one of “001” to “111”, the broadcast receiving apparatus 100 according to the present embodiment converts the non-uniform constellation used in the demodulation processing into the parameter of the carrier modulation mapping method. And an error correction method parameter and a coding rate parameter. The determination may be made by referring to a predetermined table stored in advance in the broadcast receiving apparatus 100.

[Transmission method 1 for advanced terrestrial digital broadcasting services]
In order to realize 4K (horizontal 3840 pixels × vertical 2160 pixels) broadcasting while maintaining the viewing environment of the current terrestrial digital broadcasting service, as an example of the transmission system of the advanced terrestrial digital broadcasting service according to the embodiment of the present invention, The wave transmission system will be described. The dual-polarization transmission system according to the embodiment of the present invention is a system that shares some specifications with the current digital terrestrial broadcasting system. For example, 13 segments in the approximately 6 MHz band corresponding to one physical channel are divided, 7 segments for 2K (horizontal 1920 pixels × vertical 1080 pixels) broadcast program transmission, and 5 segments for 4K broadcast program transmission 1 segment is allocated for mobile reception (so-called one-segment broadcasting). Furthermore, the 5K segment for 4K broadcasting uses not only a horizontally polarized signal but also a vertically polarized signal, and ensures a transmission capacity for a total of 10 segments using MIMO (Multiple-Input Multiple-Output) technology. In addition, 2K broadcast programs maintain the image quality by optimizing the latest MPEG-2 Video compression technology, etc., and can be received by current television receivers. Ensuring image quality by optimizing technology and modulation modulation. Note that the number of allocated segments for each broadcast may be different from that described above.

  FIG. 7A shows an example of a dual-polarization transmission method in the advanced terrestrial digital broadcasting service according to the embodiment of the present invention. A frequency band of 470 to 710 MHz is used for transmission of broadcast waves of the terrestrial digital broadcasting service. The number of physical channels in the frequency band is 40 channels of 13 to 52 ch, and each physical channel has a bandwidth of 6 MHz. In the dual-polarization transmission system according to the embodiment of the present invention, both a horizontal polarization signal and a vertical polarization signal are used in one physical channel.

  FIG. 7A shows two examples of (1) and (2) for 13 segment allocation examples. In the example of (1), the 2K broadcast program is transmitted using the segments 1 to 7 (B layer) of the horizontally polarized signal. A 4K broadcast program is transmitted using a total of 10 segments of horizontal polarization signal segments 8 to 12 (C layer) and vertical polarization signal segments 8 to 12 (C layer). The vertically polarized signal segments 1 to 7 (B layer) may be used to transmit the same broadcast program as the 2K broadcast program transmitted in the horizontally polarized signal segments 1 to 7 (B layer). Alternatively, the vertical polarization signal segments 1 to 7 (B layer) may be used for transmission of a broadcast program different from the 2K broadcast program transmitted in the horizontal polarization signal segments 1 to 7 (B layer). Alternatively, the segments 1 to 7 (B layer) of the vertically polarized signal may be used for other data transmission or may be unused. The identification information on how to use the segments 1 to 7 (B layer) of the vertically polarized signal is based on the 4K signal transmission layer identification parameter and additional layer transmission identification parameter of the TMCC signal already described. Can be transmitted. The broadcast receiving apparatus 100 can identify the handling of the segments 1 to 7 (B layer) of the vertically polarized signal by these parameters. Also, a 2K broadcast program transmitted using the B layer of the horizontally polarized signal and a 4K broadcast program transmitted using the C layer of both the horizontal / vertically polarized signals transmit the same content broadcast program with different resolutions. It may be a simulcast broadcast or a broadcast program with different contents may be transmitted. Segment 0 of both the horizontal / vertical polarization signals transmits the same one-segment broadcasting program.

  The example of (2) in FIG. 7A is a modified example different from (1). In the example of (2), a 4K broadcast program is transmitted using a total of 10 segments of horizontal polarization signal segments 1 to 5 (B layer) and vertical polarization signal segments 1 to 5 (B layer). A 2K broadcast program is transmitted using segments 6 to 12 (C layer) of the horizontally polarized signal. Also in the example of (2), the segments 6 to 12 (C layer) of the vertically polarized signal are used for transmission of the same broadcast program as the 2K broadcast program transmitted in the segments 6 to 12 (C layer) of the horizontally polarized signal. May be. The segments 6 to 12 (C layer) of the vertically polarized signal may be used for transmission of a broadcast program different from the 2K broadcast program transmitted in the segments 6 to 12 (C layer) of the horizontally polarized signal. Further, the segments 6 to 12 (C layer) of the vertically polarized signal may be used for other data transmission or may be unused. Since these pieces of identification information are the same as in the example (1), the description thereof is omitted.

  In each of the examples (1) and (2) in FIG. 7A, the case where the horizontal polarization is the main polarization has been described. However, depending on the operation, the horizontal polarization and the vertical polarization may be reversed. I do not care.

  FIG. 7B shows an example of the configuration of a broadcasting system for an advanced terrestrial digital broadcasting service using the dual-polarization transmission method according to the embodiment of the present invention. This shows both the system on the transmission side and the system on the reception side of the advanced terrestrial digital broadcasting service using the dual-polarization transmission system. The configuration of the broadcasting system of the advanced terrestrial digital broadcasting service using the dual-polarization transmission method is basically the same as the configuration of the broadcasting system shown in FIG. A dual-polarized transmission antenna capable of simultaneously transmitting a wave signal and a vertically polarized signal. In the example of FIG. 7B, the broadcast receiving apparatus 100 extracts only the channel selection / detection unit 131H and the channel selection / detection unit 131V of the second tuner / demodulation unit 130T and omits the description of the other operation units. doing.

  The horizontally polarized wave signal transmitted from the radio tower 300T is received by the horizontally polarized wave receiving element of the antenna 200T, which is a dual polarization receiving antenna, and is selected from the connector unit 100F1 through the coaxial cable 202T1 and selected / detected unit 131H. Is input. On the other hand, the vertically polarized signal transmitted from the radio tower 300T is received by the vertically polarized wave receiving element of the antenna 200T, and is input from the connector unit 100F2 to the channel selection / detection unit 131V via the coaxial cable 202T2. In general, an F-type connector is used for a connector portion that connects an antenna (coaxial cable) and a television receiver.

  Here, there is a possibility that the user mistakenly connects the coaxial cable 202T1 to the connector unit 100F2 and connects the coaxial cable 202T2 to the connector unit 100F1. In this case, there is a possibility that the channel selection / detection unit 131H and the channel selection / detection unit 131V may have a problem that the input broadcast signal cannot be identified as a horizontal polarization signal or a vertical polarization signal. In order to prevent the above-described problems, one of the connector portions that connect the antenna (coaxial cable) and the television receiver, for example, the coaxial cable 202T2 that transmits a vertically polarized signal and the connector portion of the connector portion 100F2 are horizontally polarized. It is conceivable that the coaxial cable 202T1 for transmitting a signal and the connector part of the connector part 100F1 have a connector part having a different shape. Alternatively, the channel selection / detection unit 131H and the channel selection / detection unit 131V refer to the main signal identification of the TMCC information of each input signal to determine whether the input broadcast signal is a horizontal polarization signal or a vertical polarization signal. It is sufficient to control so as to identify and operate.

  FIG. 7C shows an example of a configuration example different from the configuration of the broadcasting system of the advanced terrestrial digital broadcasting service using the dual-polarization transmission method according to the embodiment of the present invention. As shown in FIG. 7B, the broadcast receiving apparatus 100 includes two broadcast signal input connector units, and the configuration using two coaxial cables for the connection between the antenna 200T and the broadcast receiving apparatus 100 is the cost of equipment and There are cases where it is not always suitable for handling during cable wiring. Therefore, in the configuration shown in FIG. 7C, a horizontal polarization signal received by the horizontal polarization receiving element of the antenna 200T and a vertical polarization signal received by the vertical polarization reception element of the antenna 200T are converted into a conversion unit ( Converter) 201T, and the connection between the conversion unit 201T and the broadcast receiving apparatus 100 is performed by a single coaxial cable 202T3. The broadcast signal input from the connector unit 100F3 is demultiplexed and input to the channel selection / detection unit 131H and the channel selection / detection unit 131V. The connector unit 100F3 may have a function of supplying operating power to the conversion unit 201T.

  The conversion unit 201T may belong to equipment in an environment (for example, an apartment house) in which the broadcast receiving device 100 is installed. Alternatively, it may be configured as an apparatus integrated with the antenna 200T and installed in a house or the like. The conversion unit 201T converts the frequency of either the horizontal polarization signal received by the horizontal polarization reception element of the antenna 200T or the vertical polarization signal received by the vertical polarization reception element of the antenna 200T. Process. By this process, the horizontal polarization signal and the vertical polarization signal transmitted from the radio tower 300T to the antenna 200T using the horizontal polarization and the vertical polarization in the same frequency band are separated into different frequency bands, and one It is possible to simultaneously transmit to the broadcast receiving apparatus 100 using the coaxial cable 202T3. If necessary, frequency conversion processing may be performed on both the horizontally polarized signal and the vertically polarized signal, but in this case also, the frequency bands after frequency conversion need to be different from each other. . Moreover, the broadcast receiving apparatus 100 should just be provided with one broadcast signal input connector part 100F3.

  FIG. 7D shows an example of the frequency conversion process. In this example, frequency conversion processing is performed on a vertically polarized signal. Specifically, the frequency band of the vertical polarization signal is 470 to 710 MHz among the horizontal polarization signal and the vertical polarization signal transmitted in the frequency band of 470 to 710 MHz (band corresponding to 13ch to 52ch of UHF). The frequency band is converted to a frequency band of 770 to 1010 MHz. With this processing, signals transmitted using the horizontally polarized waves and vertically polarized waves in the same frequency band can be simultaneously transmitted to the broadcast receiving apparatus 100 with one coaxial cable 202T3 without interfering with each other. Become. Note that frequency conversion processing may be performed on the horizontally polarized signal.

  Further, it is preferable that the frequency conversion process is performed on a signal transmitted with a sub polarization according to the result of referring to the main signal identification of the TMCC information. As described with reference to FIG. 5H, the signal transmitted with the main polarization is more likely to be transmitted including the current digital terrestrial broadcasting service than the signal transmitted with the sub polarization. Therefore, in order to maintain better compatibility with the current terrestrial digital broadcasting service, the signal transmitted with the main polarization is not frequency-converted, but the signal transmitted with the sub-polarization is frequency-converted. Is preferable.

  In addition, when frequency-converting a signal transmitted with a sub-polarization, in the converted signal, the frequency band of the signal transmitted with a sub-polarization than the frequency band of the signal transmitted with the main polarization It is desirable to increase the value. Thereby, in the initial scan of the broadcast receiving apparatus 100, if the scan starts from the low frequency side and proceeds to the high frequency side, the signal transmitted with the main polarization is ahead of the signal transmitted with the sub polarization. An initial scan can be performed. Thereby, the process etc. which reflect the setting by the initial scan of the present terrestrial digital broadcast service in the setting by the initial scan of advanced terrestrial digital broadcast service can be performed more suitably.

  Further, the frequency conversion processing may be performed for all physical channels used in the advanced terrestrial digital broadcasting service, but may be performed only for physical channels using signal transmission by the dual-polarization transmission method. .

  The frequency band after the conversion by the frequency conversion process is preferably between 710-1032 MHz. That is, when receiving the terrestrial digital broadcast service and the BS / CS digital broadcast service simultaneously, the broadcast signal of the terrestrial digital broadcast service received by the antenna 200T and the broadcast signal of the BS / CS digital broadcast service received by the antenna 200B Can be mixed and transmitted to the broadcast receiving apparatus 100 using a single coaxial cable. In this case, since the BS / CS-IF signal uses a frequency band of about 1032 to 2150 MHz, if the frequency band after the conversion by the frequency conversion process is set to be between 710 to 1032 MHz, the horizontally polarized signal Thus, it is possible to avoid interference between the broadcast signal of the terrestrial digital broadcast service and the broadcast signal of the BS / CS digital broadcast service. In addition, in consideration of reception of retransmission broadcast signals by cable television (Community Antenna TV or Cable TV: CATV) stations, a frequency band of 770 MHz or less (band corresponding to 62 ch or less of UHF) in television broadcast distribution by cable television stations. Therefore, it is more preferable that the frequency band after the conversion by the frequency conversion process is between 770 and 1032 MHz exceeding the band corresponding to 62ch of UHF.

  Also, the bandwidth of the region between the frequency band before the conversion by the frequency conversion process and the frequency band after the conversion (a part in the figure) is an integral multiple of the bandwidth (6 MHz) of one physical channel. It is preferable to set to. In this way, in the broadcast receiving apparatus 100, frequency setting control can be easily performed when, for example, frequency scanning is performed for the broadcast signal in the frequency band before the conversion by the frequency conversion process and the broadcast signal in the frequency band after the conversion. There are advantages such as.

  As described above, in the dual-polarization transmission system according to the embodiment of the present invention, both the horizontal polarization signal and the vertical polarization signal are used for transmission of the 4K broadcast program. Therefore, in order to correctly reproduce a 4K broadcast program, it is necessary on the receiving side to correctly grasp the combination of physical channels of broadcast signals transmitted with horizontal polarization and broadcast signals transmitted with vertical polarization. Even when the frequency conversion process is performed and the broadcast signal transmitted in the horizontal polarization and the broadcast signal transmitted in the vertical polarization for the same physical channel are input to the receiving device as signals in different frequency bands, In the broadcast receiving apparatus 100 according to the present embodiment, the TMCC information parameters (for example, main signal identification and physical channel number identification) shown in FIG. 5F to FIG. It is possible to correctly grasp the combination of the broadcast signal transmitted and the broadcast signal transmitted with vertical polarization. As a result, the broadcast receiving apparatus 100 of the present embodiment can suitably receive, demodulate and reproduce 4K broadcast programs.

  7B, FIG. 7C, and FIG. 7D all explain the example in which the horizontal polarization is the main polarization, but depending on the operation, the horizontal polarization and the vertical polarization may be reversed. Absent.

  Note that, as described above, the broadcast wave of terrestrial digital broadcast transmitted by the dual-polarization transmission method described above can be received and reproduced by the second tuner / demodulation unit 130T of the broadcast receiving apparatus 100. It can also be received by the first tuner / demodulator 130C of the apparatus 100. When the first tuner / demodulator 130C receives the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored among the broadcast signals of the terrestrial digital broadcast. However, the broadcast signal transmitted at the level of the current digital terrestrial broadcasting service is reproduced.

<Pass-through transmission system for advanced terrestrial digital broadcasting services>
The broadcast receiving apparatus 100 can receive a signal transmitted by the pass-through transmission method. The pass-through transmission system is a system in which a broadcast signal received by a cable television station or the like is sent to a CATV distribution system by using the same signal system with the same frequency or frequency conversion.

  The pass-through method includes (1) a method of extracting a transmission signal band and level adjustment of each terrestrial digital broadcast signal output from the terrestrial receiving antenna output, and transmitting the signal to the CATV facility at the same frequency as the transmission signal frequency. There is a method of performing transmission signal band extraction and level adjustment of each terrestrial digital broadcast signal of antenna output, and transmitting to the CATV facility at a frequency of VHF band, MID band, SHB band, or UHF band set by the CATV facility manager. . A device constituting a receiving amplifier for performing the signal processing of the first scheme or a device constituting a receiving amplifier and a frequency converter for performing the signal processing of the second scheme is an OFDM signal processor (OFDM Signal Processor: OFDM-SP).

  FIG. 7E shows an example of a system configuration in the case where the first method of the pass-through transmission method is applied to the advanced terrestrial digital broadcasting service of the dual-polarization transmission method. FIG. 7E shows the head end equipment 400C and the broadcast receiving apparatus 100 of the cable television station. FIG. 7F shows an example of the frequency conversion process at that time. The notation (HV) in FIG. 7F indicates the state of a broadcast signal in which both a broadcast signal transmitted with horizontal polarization and a broadcast signal transmitted with vertical polarization exist in the same frequency band. ) Represents a broadcast signal transmitted with horizontal polarization, and (V) represents a broadcast signal transmitted with vertical polarization. The following notations in FIGS. 7H and 7I have the same meaning.

  In the case of applying the pass-through transmission of the first method to the advanced terrestrial digital broadcasting service of the dual-polarization transmission method according to the embodiment of the present invention, the cable television station The head end equipment 400C performs signal band extraction and level adjustment, and performs transmission at the same frequency as the transmission signal frequency. On the other hand, for broadcast signals transmitted with vertical polarization, signal band extraction and level adjustment are performed at the head-end equipment 400C of the cable television station, and the frequency conversion processing (transmission with vertical polarization is the same as described in FIG. 7D). The broadcast signal is transmitted after being converted into a frequency band higher than the frequency band of 470 to 770 MHz, which is a band corresponding to 13 to 62 ch of UHF. This process eliminates the frequency band overlap between broadcast signals transmitted in the horizontally polarized wave and broadcast signals transmitted in the vertically polarized wave, enabling signal transmission via a single coaxial cable (or optical fiber cable). It becomes. The transmitted signal can be received by the broadcast receiving apparatus 100 of the present embodiment. The process of receiving and demodulating the broadcast signal transmitted in the horizontal polarization and the broadcast signal transmitted in the vertical polarization included in the signal in the broadcast receiving apparatus 100 of the present embodiment is the same as the description of FIG. 7D. Therefore, the description is not repeated.

  FIG. 7G shows an example of a system configuration when the second method of the pass-through transmission method is applied to the advanced terrestrial digital broadcasting service of the dual-polarization transmission method. FIG. 7G shows a head end facility 400C and a broadcast receiving device 100 of a cable television station. FIG. 7H shows an example of frequency conversion processing at that time.

  When the pass-through transmission of the second scheme is applied to the advanced terrestrial digital broadcasting service of the dual-polarization transmission scheme of the embodiment of the present invention, the cable television station In the head end equipment 400C, signal band extraction and level adjustment are performed, and transmission is performed after frequency conversion processing to a frequency set by the CATV facility manager is performed. On the other hand, for broadcast signals transmitted with vertical polarization, signal band extraction and level adjustment are performed at the head-end equipment 400C of the cable television station, and the frequency conversion processing (transmission with vertical polarization is the same as described in FIG. 7D). The broadcast signal is transmitted after being converted into a frequency band higher than the frequency band of 470 to 770 MHz, which is a band of 13 to 62 ch of UHF. The frequency conversion process shown in FIG. 7H differs from FIG. 7F in that the broadcast signal transmitted in the horizontally polarized wave is not limited to the frequency band of 470 to 770 MHz, which is the band of 13 to 62 ch of UHF, but to a lower frequency band. The frequency conversion is performed so that the range is expanded and rearranged in the range of 90 to 770 MHz. This process eliminates the frequency band overlap between broadcast signals transmitted in the horizontally polarized wave and broadcast signals transmitted in the vertically polarized wave, enabling signal transmission via a single coaxial cable (or optical fiber cable). It becomes. The transmitted signal can be received by the broadcast receiving apparatus 100 of the present embodiment. The process of receiving and demodulating the broadcast signal transmitted in the horizontal polarization and the broadcast signal transmitted in the vertical polarization included in the signal in the broadcast receiving apparatus 100 of the present embodiment is the same as the description of FIG. 7D. Therefore, the description is not repeated.

  Moreover, as another modification of the frequency conversion processing of the cable television station head end equipment 400C in FIG. 7G, the broadcast signal at the time of pass-through output after frequency conversion may be changed from the state shown in FIG. 7H to the state shown in FIG. In this case, signal band extraction and level adjustment are performed on both the broadcast signal transmitted in the horizontal polarization and the broadcast signal transmitted in the vertical polarization, and the frequency conversion processing to the frequency set by the CATV facility manager is performed. The transmission may be performed after performing the above. In the example of FIG. 7I, both the broadcast signal transmitted in the horizontally polarized wave and the broadcast signal transmitted in the vertically polarized wave are both rearranged in the range of 90 to 770 MHz (the range from VHF1ch to UHF62ch). Since the conversion is performed and the frequency band exceeding the UHF 62ch is not used, the frequency band utilization efficiency of the broadcast signal is higher than that in FIG. 7H.

  In addition, since the band for rearranging the broadcast signal is wider than the frequency band of 470 to 710 MHz, which is the band of UHF 13ch to 52ch at the time of antenna reception, as shown in the example of FIG. It is also possible to alternately rearrange broadcast signals transmitted with vertical polarization. At this time, as shown in the example of FIG. 7I, a pair of a broadcast signal transmitted in the horizontally polarized wave and a broadcast signal transmitted in the vertically polarized wave, which were the same physical channel at the time of antenna reception, is converted to If the broadcast receiving apparatus 100 of the present embodiment performs the initial scan from the low frequency side by alternately rearranging the channels in the order of the channels, the broadcast signal and the vertical polarization transmitted by the horizontal polarization that was originally the same physical channel are used. Thus, the initial setting of the pair of broadcast signals transmitted in step S1 can be advanced sequentially in the same physical channel unit, and the initial scan can be performed efficiently.

  7E, FIG. 7F, FIG. 7G, FIG. 7H, and FIG. 7I all explained the example in which the horizontal polarization is the main polarization. However, depending on the operation, the horizontal polarization and the vertical polarization may be used. May be reversed.

  As described above, the second tuner / demodulation unit 130T of the broadcast receiving apparatus 100 can also receive and reproduce the broadcast wave of the terrestrial digital broadcasting of the dual-polarization transmission method that has been subjected to the pass-through transmission method described above. However, it can also be received by the first tuner / demodulator 130C of the broadcast receiving apparatus 100. When the first tuner / demodulator 130C receives the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored among the broadcast signals of the terrestrial digital broadcast. However, the broadcast signal transmitted at the level of the current digital terrestrial broadcasting service is reproduced.

[Transmission method 2 for advanced terrestrial digital broadcasting services]
In order to realize 4K broadcasting while maintaining the viewing environment of the current terrestrial digital broadcasting service, as an example different from the above-described transmission scheme of the advanced terrestrial digital broadcasting service according to the embodiment of the present invention, a hierarchical division multiplexing transmission scheme explain. The hierarchical division multiplexing transmission system according to the embodiment of the present invention is a system that shares some specifications with the current terrestrial digital broadcasting system. For example, a broadcast wave of a 4K broadcast service having a low signal level is multiplexed and transmitted on the same channel as the broadcast wave of the current 2K broadcast service. Note that 2K broadcasts are received as usual, with the reception level of 4K broadcasts being suppressed below the required C / N. For 4K broadcasting, while expanding the transmission capacity by modulation modulation, etc., cancel the 2K broadcast wave using the reception technology corresponding to the LDM (layer division multiplexing) technology, and receive the remaining 4K broadcast wave. Do.

  FIG. 8A shows an example of a hierarchical division multiplexing transmission system in the advanced terrestrial digital broadcasting service according to the embodiment of the present invention. The upper layer is constituted by the modulated wave of the current 2K broadcast, the lower layer is constituted by the modulated wave of 4K broadcast, the upper layer and the lower layer are multiplexed, and output as a synthesized wave. For example, 64QAM or the like may be used as the modulation method in the upper layer, and 256QAM or the like may be used as the modulation method in the lower layer. The 2K broadcast program transmitted using the upper layer and the 4K broadcast program transmitted using the lower layer may be simulcasts that transmit the same content broadcast program with different resolutions, or different contents. The broadcast program may be transmitted.

  FIG. 8B shows an example of the configuration of a broadcasting system for an advanced terrestrial digital broadcasting service using the hierarchical division multiplexing transmission system according to the embodiment of the present invention. The configuration of the broadcasting system of the advanced terrestrial digital broadcasting service using the hierarchical division multiplexing transmission system is basically the same as the configuration of the broadcasting system shown in FIG. This is a transmission antenna that transmits a broadcast signal obtained by multiplexing a 2K broadcast of a hierarchy and a 4K broadcast of a lower hierarchy. In the example of FIG. 8B, the broadcast receiving apparatus 100 extracts and describes only the channel selection / detection unit 131L of the third tuner / demodulation unit 130L, and omits the description of the other operation units.

  Broadcast signals received by the antenna 200L are input from the connector unit 100F4 to the channel selection / detection unit 131L via the conversion unit (converter) 201L and the coaxial cable 202L. Here, in the above configuration, when a broadcast signal is transmitted from the antenna 200L to the broadcast receiving device 100, as illustrated in FIG. 8C, the conversion unit 201L performs frequency conversion amplification processing on the broadcast signal. Also good. That is, when the antenna 200L is installed on the rooftop of a condominium or the like, and the broadcast signal is transmitted to the broadcast receiving device 100 in each room by the coaxial cable 202L having a long cable length, the broadcast signal is attenuated, and the channel selection / detection unit In 131L, there is a possibility that a 4K broadcast wave in the lower layer cannot be received correctly.

  Therefore, in order to prevent the above-described problem, the conversion unit 201L performs frequency conversion amplification processing on the lower-layer 4K broadcast signal. In the frequency conversion amplification processing, the frequency band of the lower layer 4K broadcast signal is increased from a frequency band of 470 to 710 MHz (a band corresponding to 13ch to 52ch of UHF), for example, 770 to 1010 MHz exceeding a band corresponding to 62ch of UHF. To the frequency band of. Further, processing is performed to amplify the lower level 4K broadcast signal to such a signal level that the influence of attenuation on the cable does not become a problem. By performing such processing, it is possible to avoid the influence of the attenuation of the broadcast signal during transmission of the coaxial cable while avoiding the interference between the 2K broadcast signal and the 4K broadcast signal. If the influence of attenuation does not matter, such as when the coaxial cable 202L is short, the conversion unit 201L and the frequency conversion amplification process may be unnecessary.

  Further, the frequency band after the conversion by the frequency conversion amplification process is between 710-1032 MHz exceeding the band corresponding to 52 ch of UHF or between 770-1032 MHz exceeding the band corresponding to 62 ch of UHF (retransmission by a cable TV station or the like) In the case of (1), the bandwidth of the region between the frequency band before the conversion and the frequency band after the conversion by the frequency conversion amplification process is an integral multiple of the bandwidth (6 MHz) of one physical channel. It is preferable that the frequency conversion amplification processing is performed only for the physical channel using signal transmission by the hierarchical division multiplexing transmission method, and so on. Since this is the same as the description of the present embodiment, the description thereof will be omitted.

  Note that the broadcast receiving apparatus 100 of the present embodiment determines whether the received broadcast signal is a broadcast signal transmitted in the lower layer or a broadcast signal transmitted in the upper layer of the TMCC information described in FIG. 5H. It is possible to identify using upper and lower layer identification bits. Also, the broadcast receiving apparatus 100 according to the present embodiment uses the frequency conversion processing identification bit of the TMCC information described with reference to FIG. 5F to determine whether or not the received broadcast signal is a broadcast signal that has been subjected to frequency conversion after receiving the antenna. Can be identified. Also, the broadcast receiving apparatus 100 of the present embodiment uses the 4K signal transmission layer identification bit of the TMCC information described with reference to FIG. 5I to determine whether or not the received broadcast signal is transmitting a 4K program in the lower layer. It is possible to identify. These identification processes can be performed by demodulating the data carrier and referring to the control information included in the stream, but the data carrier needs to be demodulated and the process becomes complicated. For example, it is possible to speed up the initial scan of the broadcast receiving apparatus 100 because the process is simpler and faster if it is identified with reference to the parameters of the TMCC information described above.

  Note that the channel selection / detection unit 131L of the third tuner / demodulation unit 130L of the broadcast receiving apparatus 100 according to the embodiment of the present invention has a reception function corresponding to the LDM (Hierarchy Division Multiplexing) technique as described above. Therefore, the converter 201L shown in FIG. 8C is not necessarily required between the antenna 200L and the broadcast receiving apparatus 100.

  Note that, as described above, the broadcast wave of digital terrestrial broadcasting transmitted by the hierarchical division multiplexing transmission method described above can be received and reproduced by the third tuner / demodulation unit 130L of the broadcast receiving apparatus 100. It can also be received by the first tuner / demodulator 130C of the apparatus 100. When the first tuner / demodulator 130C receives the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored among the broadcast signals of the terrestrial digital broadcast. However, the broadcast signal transmitted at the level of the current digital terrestrial broadcasting service is reproduced.

[MPEG-2 TS system]
The broadcasting system of the present embodiment is compatible with MPEG-2 TS adopted in the current digital terrestrial broadcasting service as a media transport system for transmitting data such as video and audio. Specifically, the stream system transmitted by the OFDM transmission wave of FIG. 4D (1) is MPEG-2 TS, and among the OFDM transmission waves of FIG. 4D (2) and FIG. MPEG-2 TS is used as a stream system to be transmitted in the layer where the digital broadcasting service is transmitted. Also, the stream format obtained by demodulating the transmission wave by the first tuner / demodulator 130C of the broadcast receiving apparatus 100 of FIG. 2 is MPEG-2 TS. Of the streams obtained by demodulating the transmission wave by the second tuner / demodulator 130T, the stream format corresponding to the layer in which the current terrestrial digital broadcasting service is transmitted is MPEG-2 TS. Similarly, of the streams obtained by demodulating the transmission wave by the third tuner / demodulator 130L, the stream system corresponding to the layer in which the current terrestrial digital broadcasting service is transmitted is MPEG-2 TS.

  MPEG-2 TS is characterized in that components such as video and audio constituting a program are multiplexed into one packet stream together with a control signal and a clock. Since it is handled as a single packet stream including a clock, it is suitable for transmitting a single content through a single transmission line with a high transmission quality, and is used in many current digital broadcasting systems. In addition, it is possible to realize two-way communication via a two-way network such as a fixed network / mobile network, etc., and to acquire additional contents via the broadband network by linking a function using the broadband network with a digital broadcasting service. In addition, it is possible to cope with a broadcasting / communication cooperation system that combines arithmetic processing in a server device, presentation processing in cooperation with a mobile terminal device, and the like with a digital broadcasting service.

  FIG. 9A shows an example of a protocol stack of MPEG-2 TS. In MPEG-2 TS, PSI, SI, and other control signals are transmitted in a section format.

[Control signal of broadcasting system using MPEG-2 TS system]
As control information of the MPEG-2 TS system, there are mainly a table used for program arrangement information and a table used for other than program arrangement information. The table is transmitted in section form and the descriptor is placed in the table.

<Table used in program layout information>
FIG. 9B shows a list of tables used in the program arrangement information of the MPEG-2 TS broadcast system. In this embodiment, the table shown below is used as the table used in the program arrangement information.

(1) PAT (Program Association Table)
(2) CAT (Conditional Access Table)
(3) PMT (Program Map Table)
(4) NIT (Network Information Table)
(5) SDT (Service Description Table)
(6) BAT (Bouquet Association Table)
(7) EIT (Event Information Table)
(8) RST (Running Status Table)
(9) TDT (Time and Date Table)
(10) TOT (Time Offset Table)

(11) LIT (Local Event Information Table)
(12) ERT (Event Relation Table)
(13) ITT (Index Transmission Table)
(14) PCAT (Partial Content Announcement Table)
(15) ST (Stuffing Table)
(16) BIT (Broadcaster Information Table)
(17) NBIT (Network Board Information Table)
(18) LDT (Linked Description Table)
(19) AMT (Address Map Table)
(20) INT (IP / MAC Notification Table)
(21) Table set by the operator

<Tables used in digital broadcasting>
FIG. 9C shows a list of tables used other than the program arrangement information of the MPEG-2 TS broadcasting system. In the present embodiment, the table shown below is used as a table used other than the program arrangement information.

(1) ECM (Entitlement Control Message)
(2) EMM (Entitlement Management Message)
(3) DCT (Download Control Table)
(4) DLT (DownLoad Table)
(5) DIT (Discontinuity Information Table)
(6) SIT (Selection Information Table)
(7) SDTT (Software Download Trigger Table)
(8) CDT (Common Data Table)
(9) DSM-CC section (10) AIT (Application Information Table)
(11) DCM (Download Control Message)
(12) DMM (Download Management Message)
(13) Table set by the operator

<Descriptor used in program sequence information>
FIG. 9D, FIG. 9E, and FIG. 9F show a list of descriptors used in the program arrangement information of the MPEG-2 TS broadcast system. In the present embodiment, the following descriptors are used as program sequence information.

(1) Conditional Access Descriptor
(2) Copyright Descriptor
(3) Network Name Descriptor
(4) Service List Descriptor
(5) Stuffing Descriptor
(6) Satellite Delivery System Descriptor
(7) Terrestrial Delivery System Descriptor
(8) Bouquet Name Descriptor
(9) Service descriptor
(10) Country Availability Descriptor (Country Availability Descriptor)

(11) Link descriptor (Linkage Descriptor)
(12) NVOD Reference Descriptor
(13) Time Shifted Service Descriptor
(14) Short Event Descriptor
(15) Extended Event Descriptor
(16) Time Shifted Event Descriptor
(17) Component descriptor
(18) Mosaic Descriptor
(19) Stream Identifier Descriptor
(20) CA Identifier Descriptor

(21) Content descriptor
(22) Parental Rating Descriptor
(23) Hierarchical Transmission Descriptor
(24) Digital Copy Control Descriptor
(25) Emergency Information Descriptor
(26) Data coding descriptor (Data Component Descriptor)
(27) System Management Descriptor
(28) Local Time Offset Descriptor
(29) Audio Component Descriptor
(30) Target Region Descriptor

(31) Hyperlink Descriptor
(32) Data Content Descriptor
(33) Video Decode Control Descriptor
(34) Basic Local Event Descriptor
(35) Reference Descriptor
(36) Node Relation Descriptor
(37) Short Node Information Descriptor
(38) STC Reference Descriptor
(39) Partial Reception Descriptor
(40) Series Descriptor

(41) Event Group Descriptor
(42) SI transmission parameter descriptor (SI Parameter Descriptor)
(43) Broadcaster Name Descriptor
(44) Component Group Descriptor
(45) SI Prime TS Descriptor
(46) Board Information Descriptor
(47) LDT Linkage Descriptor
(48) Connected Transmission Descriptor
(49) TS Information Descriptor
(50) Extended Broadcaster Descriptor

(51) Logo Transmission Descriptor
(52) Content Availability Descriptor
(53) Carousel Compatible Composite Descriptor
(54) Conditional Playback Descriptor
(55) AVC Video Descriptor
(56) AVC Timing and HRD Descriptor
(57) Service Group Descriptor
(58) MPEG-4 Audio Descriptor
(59) MPEG-4 Audio Extension Descriptor
(60) Registration Descriptor

(61) Data Broadcast Id Descriptor
(62) Access Control Descriptor
(63) Area Broadcasting Information Descriptor
(64) Material Information Descriptor
(65) HEVC Video Descriptor
(66) Hierarchy Descriptor
(67) Communication information descriptor (Hybrid Information Descriptor)
(68) Scrambler Descriptor
(69) Descriptor set by the operator

<Descriptors used in digital broadcasting>
FIG. 9G shows a list of descriptors used other than the program arrangement information of the MPEG-2 TS system broadcasting system. In the present embodiment, the following descriptors are used other than the program arrangement information.

(1) Partial transport stream descriptor
(Partial Transport Stream Descriptor)
(2) Network Identification Descriptor
(3) Partial transport stream time descriptor
(Partial Transport Stream Time Descriptor)
(4) Download Content Descriptor
(5) CA_EMM_TS_Descriptor
(6) CA Contract Information Descriptor
(7) CA Service Descriptor
(8) Carousel Identifier Descriptor
(9) Association Tag Descriptor
(10) Extended association tag descriptor
(Deferred Association tags Descriptor)
(11) Network download content descriptor
(Network Download Content Descriptor)
(12) Download Protection Descriptor
(13) CA Startup Descriptor
(14) Descriptor set by the operator

<Descriptor used in INT>
FIG. 9H shows a list of descriptors used in INT of the MPEG-2 TS system broadcasting system. In this embodiment, the following descriptors are used for INT. Note that descriptors used in the above-described program arrangement information and descriptors other than the program arrangement information are not used in INT.

(1) Target Smartcard Descriptor
(2) Target IP Address Descriptor
(3) Target IPv6 Address Descriptor
(4) IP / MAC Platform Name Descriptor
(5) IP / MAC platform provider name descriptor
(IP / MAC Platform Provider Name Descriptor)
(6) IP / MAC Stream Location Descriptor
(7) Descriptor set by the operator

<Descriptors used in AIT>
FIG. 9I shows a list of descriptors used in the AIT of the MPEG-2 TS broadcasting system. In the present embodiment, the following descriptors are used as AIT descriptors. Note that descriptors used in the above-described program arrangement information and descriptors other than the program arrangement information are not used in INT.

(1) Application descriptor (Application Descriptor)
(2) Transport Protocol Descriptor
(3) Simple application location descriptor
(Simple Application Location Descriptor)
(4) Application boundary authority setting descriptor
(Application Boundary and Permission Descriptor)
(5) Start priority information descriptor (Autostart Priority Descriptor)
(6) Cache Control Info Descriptor
(7) Randomized Latency Descriptor
(8) External application control descriptor
(External Application Control Descriptor)
(9) Playback Application Descriptor
(10) Simple recording / playback application location descriptor
(Simple Playback Application Location Descriptor)
(11) Application Expiration Descriptor
(12) Descriptor set by the operator

[MMT method]
The broadcasting system of the present embodiment can also support the MMT system as a media transport system for transmitting data such as video and audio. Specifically, among the OFDM transmission waves in FIGS. 4D (2) and 4D (3), the method of the stream transmitted in the layer where the advanced digital terrestrial broadcasting service is transmitted is the MMT method in principle. In addition, among the streams obtained by demodulating the transmission wave by the second tuner / demodulator 130T of the broadcast receiving apparatus 100 of FIG. 2, the stream scheme corresponding to the layer where the advanced digital terrestrial broadcasting service is transmitted is in principle MMT. It is. Similarly, of the streams obtained by demodulating the transmission wave by the third tuner / demodulator 130L, the stream system corresponding to the layer where the advanced digital terrestrial broadcasting service is transmitted is in principle MMT. As a modification, an MPEG-2 TS stream may be used in an advanced digital terrestrial broadcasting service. The stream system obtained by demodulating the transmission wave in the fourth tuner / demodulator 130B is MMT.

  The MMT system is MPEG-2 in response to environmental changes related to content distribution, such as recent diversification of contents, diversification of devices using contents, diversification of transmission paths for distributing contents, diversification of content storage environments, and the like. This is a newly-developed media transport system due to the limitations of TS system functions.

  The code | symbol of the video signal and audio | voice signal of a broadcast program is set to MFU (Media Fragment Unit) / MPU (Media Processing Unit), MMTP (MMT Protocol) It carries on a payload, and it transmits with an IP packet. In addition, data content related to a broadcast program and subtitle signals are also in MFU / MPU format, MMTP-packed on the MMTP payload, and transmitted as IP packets.

  For transmission of MMTP packets, UDP / IP (User Datagram Protocol / Internet Protocol) is used in the broadcast transmission path, and UDP / IP or TCP / IP (Transmission Control Protocol / Internet Protocol) is used in the communication line. In the broadcast transmission path, a TLV multiplexing method may be used for efficient transmission of IP packets.

  FIG. 10A shows an MMT protocol stack in the broadcast transmission path. FIG. 10B shows an MMT protocol stack in the communication line. In the MMT system, a mechanism for transmitting two types of control information, MMT-SI and TLV-SI, is prepared. MMT-SI is control information indicating the configuration of a broadcast program. An MMT control message format is used, which is carried on an MMTP payload to form an MMTP packet, and is transmitted as an IP packet. TLV-SI is control information related to multiplexing of IP packets, and provides information for channel selection and correspondence information between IP addresses and services.

[Control signal of broadcasting system using MMT system]
As described above, in the MMT scheme, TLV-SI and MMT-SI are prepared as control information. TLV-SI is composed of a table and a descriptor. The table is transmitted in section form and the descriptor is placed in the table. The MMT-SI is composed of three layers: a message storing a table and descriptor, a table having elements and attributes indicating specific information, and a descriptor indicating more detailed information.

<Table used in TLV-SI>
FIG. 10C shows a list of tables used in TLV-SI of the MMT broadcasting system. In the present embodiment, the following table is used as a TLV-SI table.

(1) Network Information Table for TLV
(2) Address Map Table
(3) Table set by the operator

<Descriptors used in TLV-SI>
FIG. 10D shows a list of descriptors used in TLV-SI of the MMT broadcasting system. In the present embodiment, the following descriptors are used as TLV-SI descriptors.

(1) Service List Descriptor
(2) Satellite Delivery System Descriptor
(3) System Management Descriptor
(4) Network Name Descriptor
(5) Remote Control Key Descriptor
(6) Descriptor set by the operator

<Messages used in MMT-SI>
FIG. 10E shows a list of messages used in MMT-SI of the MMT broadcasting system. In the present embodiment, the following messages are used as MMT-SI messages.

(1) PA (Package Access) message (2) M2 section message (3) CA message (4) M2 short section message (5) Data transmission message (6) Message set by the operator

<Table used in MMT-SI>
FIG. 10F shows a list of tables used in MMT-SI of the MMT broadcasting system. In the present embodiment, the following table is used as the MMT-SI table.

(1) MPT (MMT Package Table)
(2) PLT (Package List Table)
(3) LCT (Layout Configuration Table)
(4) ECM (Entitlement Control Message)
(5) EMM (Entitlement Management Message)
(6) CAT (MH) (Conditional Access Table (MH))
(7) DCM (Download Control Message)
(8) DMM (Download Management Message)
(9) MH-EIT (MH-Event Information Table)
(10) MH-AIT (MH-Application Information Table)

(11) MH-BIT (MH-Broadcaster Information Table)
(12) MH-SDTT (MH-Software Download Trigger Table)
(13) MH-SDT (MH-Service Description Table)
(14) MH-TOT (MH-Time Offset Table)
(15) MH-CDT (MH-Common Data Table)
(16) DDM table (Data Directory Management Table)
(17) DAM table (Data Asset Management Table)
(18) DCC table (Data Content Configuration Table)
(19) EMT (Event Message Table)
(20) Table set by the operator

<Descriptors used in MMT-SI>
FIG. 10G, FIG. 10H, and FIG. 10I show a list of descriptors used in the MMT-SI of the MMT broadcasting system. In the present embodiment, the following MMT-SI descriptors are used.

(1) Asset Group Descriptor
(2) Event Package Descriptor
(3) Background Color Descriptor
(4) MPU Presentation Region Descriptor
(5) MPU Timestamp Descriptor
(6) Dependency Descriptor
(7) Access Control Descriptor
(8) Scrambler descriptor (Scrambler Descriptor)
(9) Message Authentication Method Descriptor
(10) Emergency Information Descriptor

(11) MH-MPEG-4 Audio Descriptor
(12) MH-MPEG-4 audio extension descriptor
(MH-MPEG-4 Audio Extension Descriptor)
(13) MH-HEVC Descriptor
(14) MH-Linkage Descriptor
(15) MH-Event Group Descriptor
(16) MH-Service List Descriptor
(17) MH-Short Event Descriptor
(18) MH-Extended Event Descriptor
(19) Video Component Descriptor
(20) MH-Stream Identifier Descriptor

(21) MH-Content Descriptor
(22) MH-Parental Rating Descriptor
(23) MH-Audio Component Descriptor
(24) MH-Target Region Descriptor
(25) MH-Series Descriptor
(26) MH-SI parameter descriptor (MH-SI Parameter Descriptor)
(27) MH-Broadcaster Name Descriptor
(28) MH-Service Descriptor
(29) IP Data Flow Descriptor
(30) MH-CA Startup Descriptor

(31) MH-Type descriptor (MH-Type Descriptor)
(32) MH-Info descriptor (MH-Info Descriptor)
(33) MH-Expire Descriptor
(34) MH-CompressionType descriptor
(MH-Compression Type Descriptor)
(35) MH-Data Component Descriptor
(36) UTC-NPT Reference Descriptor
(37) Event Message Descriptor
(38) MH-Local Time Offset Descriptor
(39) MH-Component Group Descriptor
(40) MH-Logo Transmission Descriptor

(41) MPU Extended Timestamp Descriptor
(42) MPU Download Content Descriptor
(43) MH-network download content descriptor
(MH-Network Download Content Descriptor)
(44) Application descriptor (MH-Application Descriptor)
(45) MH-Transport Protocol Descriptor
(46) MH-Simple application location descriptor
(MH-Simple Application Location Descriptor)
(47) Application boundary authority setting descriptor
(MH-Application Boundary and Permission Descriptor)
(48) MH-Autostart Priority Descriptor
(49) MH-Cache Control Info Descriptor
(50) MH-Randomized Latency Descriptor

(51) Linked PU Descriptor
(52) Locked Cache Descriptor
(53) Unlocked Cache Descriptor
(54) MH-Download Protection Descriptor (MH-DL Protection Descriptor)
(55) Application Service Descriptor
(56) MPU Node Descriptor
(57) PU Structure Descriptor
(58) MH-Hierarchy Descriptor
(59) Content Copy Control Descriptor
(60) Content Usage Control Descriptor

(61) Emergency News Descriptor
(62) MH-CA Contract Info Descriptor
(63) MH-CA Service Descriptor
(64) MH-external application control descriptor
(MH-External Application Control Descriptor)
(65) MH-Recording / playback application descriptor
(MH-Playback Application Descriptor)
(66) MH-simple recording / playback application location descriptor
(MH-Simple Playback Appication Location Descriptor)
(67) MH-application expiration date descriptor
(MH-Application Expiration Descriptor)
(68) Related Broadcaster Descriptor
(69) Multimedia Service Descriptor
(70) Descriptor set by the operator

<Relationship between data transmission and control information in MMT system>
FIG. 10J shows the relationship between data transmission and a typical table in the MMT broadcasting system.

  In an MMT broadcasting system, data can be transmitted through a plurality of paths such as a TLV stream via a broadcast transmission path and an IP data flow via a communication line. The TLV stream includes a TLV-SI such as TLV-NIT or AMT, and an IP data flow that is a data flow of an IP packet. The IP data flow includes video assets including a series of video MPUs and audio assets including a series of audio MPUs. Furthermore, a caption asset including a series of caption MPUs, a character super asset including a series of character super MPUs, a data asset including a series of data MPUs, and the like may be included. These various assets are associated in units of packages by MPT (MMT package table) transmitted in a PA message. Specifically, the package ID and the asset ID of each asset included in the package may be described in association with the MPT.

Assets constituting the package may be only assets in the TLV stream, but as shown in FIG. 10J, assets transmitted in the IP data flow of the communication line may be included. This can be realized by including location information of each asset included in the package in the MPT so that the broadcast receiving apparatus 100 can grasp the reference destination of each asset. For each asset location information,
(1) Data multiplexed in the same IP data flow as MPT (2) Data multiplexed in IPv4 data flow (3) Data multiplexed in IPv6 data flow (4) Multiplexed in broadcast MPEG2-TS (5) Data multiplexed in the MPEG2-TS format within the IP data flow (6) Various data to be transmitted through various transmission paths such as data at a designated URL can be designated. .

  The MMT broadcasting system further has a concept of event. The event is a concept indicating a so-called program that is handled by the MH-EIT sent in the M2 section message. Specifically, in the package indicated by the event package descriptor stored in the MH-EIT, a series of data included in a duration period from the disclosure time stored in the MH-EIT is included in the concept of the event. It is included data. The MH-EIT is used in the broadcast receiving apparatus 100 for various processes in units of events (for example, program table generation processing, recording reservation and viewing reservation control, copyright management processing such as temporary storage, etc.) and the like. Can do.

[Broadcast receiving device channel setting processing]
<Initial scan>
In the current digital terrestrial broadcasting, the network ID is different for each transmission master, and information on other stations is generally not described in the NIT. Therefore, the broadcast receiving apparatus 100 according to the embodiment of the present invention having compatibility with the current terrestrial digital broadcast is the terrestrial digital broadcast (the advanced terrestrial digital broadcast, or the advanced terrestrial digital broadcast and the current terrestrial digital). For digital terrestrial broadcasting (broadcast and broadcast simultaneously transmitted in different layers), it has a function of searching (scanning) all receivable channels at a reception point and creating a service list (receivable frequency table) based on the service ID. There is a need. In an area where the same network ID can be received by different physical channels by MFN (Multi Frequency Network), basically a channel with good reception C / N or BER (Bit Error Rate) is selected. It only needs to operate so as to be stored in the service list.

  In the advanced BS digital broadcast or advanced CS digital broadcast received by the fourth tuner / demodulator 130B of the broadcast receiving apparatus 100 according to the embodiment of the present invention, the broadcast receiving apparatus 100 acquires a service list stored in the TLV-NIT. You do not need to create a service list. Therefore, for advanced BS digital broadcasting or advanced CS digital broadcasting received by the fourth tuner / demodulation unit 130B, initial scanning and rescanning described later are unnecessary.

<Rescan>
The broadcast receiving apparatus 100 according to the embodiment of the present invention has a rescan function for cases such as when a new station is opened, a new relay station is installed, or a reception point of a television receiver is changed. When changing the preset information, the broadcast receiving apparatus 100 can notify the user to that effect.

<Operation example during initial / rescan>
FIG. 11A shows an example of an operation sequence of channel setting processing (initial / rescan) of the broadcast receiving apparatus 100 according to the embodiment of the present invention. In the figure, an example in which MPEG-2 TS is adopted as a media transport system is shown, but basically the same processing is performed when an MMT system is employed.

  In the channel setting process, first, the reception function control unit 1102 performs setting of a residential area (selection of an area where the broadcast receiving device 100 is installed) based on a user instruction (S101). At this time, instead of the user's instruction, the residential area may be automatically set based on the installation position information of the broadcast receiving apparatus 100 acquired by a predetermined process. As an example of the acquisition process of the installation position information, information may be acquired from the network to which the LAN communication unit 121 is connected, or information regarding the installation position may be acquired from an external device to which the digital I / F unit 125 is connected. . Next, an initial value of the frequency range to be scanned is set, and a tuner / demodulator (first tuner / demodulator 130C, second tuner / demodulator 130T, and third tuner / demodulator so as to perform tuning to the set frequency. If the demodulator 130L is not distinguished, it is described in this way (the same applies hereinafter)) (S102).

  The tuner / demodulator performs tuning based on the instruction (S103), and when the lock to the set frequency is successful (S103: Yes), the process proceeds to S104. If the lock is not successful (S103: No), the process proceeds to S111. In the process of S104, C / N confirmation is performed (S104). When a C / N greater than or equal to a predetermined value is obtained (S104: Yes), the process proceeds to S105, and a reception confirmation process is performed. When C / N more than predetermined is not acquired (S104: No), it progresses to the process of S111.

  In the reception confirmation process, the reception function control unit 1102 first acquires the BER of the received broadcast wave (S105). Next, it is confirmed whether or not the NIT is valid data by acquiring and collating the NIT (S106). When the NIT acquired in the process of S106 is valid data, the reception function control unit 1102 acquires information such as a transport stream ID and an original network ID from the NIT. Also, distribution system information regarding the physical conditions of the broadcast transmission path corresponding to each transport stream ID / original network ID is acquired from the terrestrial distribution system descriptor. Also, a list of service IDs is acquired from the service list descriptor.

  Next, the reception function control unit 1102 confirms whether or not the transport stream ID acquired in the process of S106 has already been acquired by checking the service list stored in the reception device (S107). . When the transport stream ID acquired in the process of S106 is not already acquired (S107: No), the various information acquired in the process of S106 is associated with the transport stream ID and added to the service list (S108). When the transport stream ID acquired in the process of S106 has already been acquired (S107: Yes), the BER acquired in the process of S105 is compared with the BER when the transport stream ID described in the service list is acquired. Perform (S109). As a result, when the BER acquired in the process of S105 is better (S109: Yes), the service list is updated with various information acquired in the process of S106 (S110). If the BER acquired in the process of S105 is not good (S109: No), the various information acquired in the process of S106 is discarded.

  Further, at the time of the service list creation (addition / update) process described above, a remote control key ID may be obtained from the TS information descriptor, and a representative service for each transport stream may be associated with the remote control key. This process enables one-touch channel selection described later.

  When the reception confirmation process is finished, the reception function control unit 1102 confirms whether or not the current frequency setting is the final value of the frequency range to be scanned (S111). If the current frequency setting is not the final value of the frequency range to be scanned (S111: No), the frequency value set in the tuner / demodulation unit is increased (S112), and the processes of S103 to S110 are repeated. When the current frequency setting is the final value of the frequency range to be scanned (S111: Yes), the process proceeds to S113.

  In the process of S113, the service list created (added / updated) in the above process is presented to the user as a result of the channel setting process (S113). Further, if there is an overlap of the remote control keys, the user may be notified of this and prompted to change the remote control key settings (S114). The service list created / updated by the above-described processing is stored in a nonvolatile memory such as the ROM 103 or the storage (storage) unit 110 of the broadcast receiving apparatus 100.

  FIG. 11B shows an example of the data structure of the NIT. In the figure, “transport_stream_id” corresponds to the above-described transport stream ID, and “original_network_id” corresponds to the original network ID. FIG. 11C shows an example of the data structure of the ground distribution system descriptor. “Guard_interval”, “transmission_mode”, “frequency”, and the like in the figure correspond to the distribution system information described above. FIG. 11D shows an example of the data structure of the service list descriptor. “Service_id” in the figure corresponds to the aforementioned service ID. FIG. 11E shows an example of the data structure of the TS information descriptor. “Remote_control_key_id” in the figure corresponds to the above-described remote control key ID.

  In the broadcast receiving apparatus 100, the above-described frequency range to be scanned may be controlled to be changed as appropriate according to the broadcast service to be received. For example, when the broadcast receiving apparatus 100 is receiving a broadcast wave of the current terrestrial digital broadcasting service, control is performed so as to scan a frequency range of 470 to 770 MHz (corresponding to physical channels 13ch to 62ch). That is, the initial value of the frequency range is set to 470 to 476 MHz (center frequency 473 MHz), the final value of the frequency range is set to 764 to 770 MHz (center frequency 767 MHz), and the frequency value is increased by +6 MHz in the process of S112. To control.

  When the broadcast receiving apparatus 100 receives a broadcast wave including an advanced terrestrial digital broadcast service, the frequency range of 470 to 1010 MHz (the frequency conversion process shown in FIG. 7D and the frequency conversion amplification process shown in FIG. 8C). Control to scan (because you may have). That is, the initial value of the frequency range is set to 470 to 476 MHz (center frequency 473 MHz), the final value of the frequency range is set to 1004 to 1010 MHz (center frequency 1007 MHz), and the frequency value is increased by +6 MHz in the processing of S112. To control. Even when the broadcast receiving apparatus 100 receives the advanced terrestrial digital broadcasting service, if it is determined that the frequency conversion process or the frequency conversion amplification process is not performed, a frequency of 470 to 770 MHz is used. Control may be performed so that only the range is scanned. The selection of the frequency range to be scanned can be performed by the broadcast receiving apparatus 100 based on the system identification of the TMCC information, the frequency conversion process identification, and the like.

  When the broadcasting system of the embodiment of the present invention has the configuration shown in FIG. 7C, for example, and the broadcast receiving apparatus 100 receives the advanced terrestrial digital broadcasting service of the dual-polarization transmission method, the channel selection / detection is performed. The frequency range of 470 to 770 MHz may be scanned on one side of the unit 131H and the channel selection / detection unit 131V, and the frequency range of 770 to 1010 MHz may be scanned on the other side (detected by the other channel selection / detection unit) When frequency conversion processing is applied to the transmission wave with polarization). By controlling in this way based on the system identification and frequency conversion process identification of the TMCC information, it is possible to omit scanning in an unnecessary frequency range and reduce the time required for channel setting. Furthermore, in this case, both the channel selection / detection unit 131H and the channel selection / detection unit 131V may advance the operation sequence of FIG. 11A in parallel to synchronize the loop of frequency up S112 in the operation sequence of FIG. 11A. . At this time, in the loop of the same timing in the frequency up loop in the operation sequence of FIG. 11A, the pair of the horizontal polarization signal and the vertical polarization signal transmitted on the same physical channel are respectively received in parallel. Then, it becomes possible to decode the control information and the like inside the packet stream of the advanced terrestrial digital service transmitted as a pair of the horizontal polarization signal and the vertical polarization signal and acquire it during the loop processing. This is preferable because the scan and creation of the service list proceed efficiently.

  Similarly, the broadcast receiving apparatus 100 has a configuration shown in FIG. 8B and further includes a so-called double tuner (for example, a plurality of third tuner / demodulators 130L) in which a plurality of tuners / demodulators (channel selection / detectors) are provided. Configuration), and when receiving an advanced terrestrial digital broadcasting service of a hierarchical division multiplexing transmission system, one of the double tuners scans a frequency range of 470 to 770 MHz, and the other scans a frequency range of 770 to 1010 MHz. Alternatively, the frequency conversion amplification process may be performed. By controlling in this way, it is possible to reduce the time required for channel setting as described above.

  8A, 8B, and 8C, in the configuration shown in FIG. 8B, the terrestrial digital broadcast service transmitted in either the upper layer or the lower layer is an existing terrestrial digital broadcast service. is there. Therefore, for example, among the frequency range of 470 to 770 MHz and the frequency range of 770 to 1010 MHz, the first tuner / demodulator 130C scans the frequency range in which the current terrestrial digital broadcasting service is transmitted, and the other frequency range In parallel, scanning may be performed by the third tuner / demodulator 130L. Also in this case, it is possible to reduce the time required for channel setting as in the case of the parallel scan by the double tuner of the third tuner / demodulator 130L described above. Whether the current terrestrial digital broadcast service is transmitted or the advanced terrestrial digital broadcast service is transmitted in the frequency range of 470 to 770 MHz and the frequency range of 770 to 1010 MHz, the initial scan / rescan operation Before starting the sequence, the third tuner / demodulator 130L performs two points, one for each frequency range, for example, two points of 470 to 476 MHz (center frequency 473 MHz) and 770 to 776 MHz (center frequency 773 MHz). It is possible to perform identification by obtaining TMCC information transmitted at each frequency and referring to a parameter (for example, a system identification parameter) stored in the TMCC information.

  In the advanced terrestrial digital broadcasting service using the dual-polarization transmission method, for example, both the horizontally polarized signal and the vertically polarized signal, such as the 4K broadcast program of the C layer shown in the layer division example (1) of FIG. In the case of a channel having a broadcast program to be transmitted using the same transport ID, the same transport ID is detected by scanning both the frequency range of 470 to 770 MHz and the frequency range of 770 to 1010 MHz. List it. Further, in the case of the 2K broadcast program of the B layer shown in the figure, the same transport program is transmitted when the same broadcast program is transmitted in the B layer of the horizontally polarized signal and the B layer of the vertically polarized signal. Even if the ID is detected, it may be stored in the service list as one channel. That is, when the same broadcast program is transmitted in the same layer transmitted with different polarizations, it is recognized by being merged into one channel and not recognized as separate channels. In this way, in the channel selection process using the service list, it is possible to avoid the user's confusion due to the existence of the same broadcast program on another channel.

  On the other hand, in the advanced terrestrial digital broadcasting service of the dual-polarization transmission method, when different broadcast programs are transmitted in the B layer of the horizontally polarized signal and the B layer of the vertically polarized signal (B of the vertically polarized signal). When the hierarchy is handled as a virtual D hierarchy), it is stored in the service list as a different channel. Whether or not the same broadcast program is transmitted in the B layer of the horizontally polarized signal and the B layer of the vertically polarized signal is determined by referring to the additional layer transmission identification parameter of the TMCC information in the broadcast receiving apparatus 100. It can be identified if judged.

[Broadcast receiving device channel selection processing]
The broadcast receiving apparatus 100 according to the embodiment of the present invention has, as a program tuning function, a one-touch tuning by a remote control one-touch key, a channel up / down tuning by a remote control channel up / down key, and a remote control 10 key. It has functions such as direct channel selection by direct input of the 3-digit number used. Any channel selection function may be performed using information stored in the service list generated by the initial scan / rescan described above. After channel selection, information on the channel selected by banner display etc. (3-digit number used for direct channel selection, branch number, TS name, service name, logo, video resolution information (such as distinction of UHD, HD, SD, etc.) ), Presence / absence of video resolution up / down conversion, number of audio channels, presence / absence of audio downmix, etc.). In this way, the user can visually obtain channel information after channel selection, and can confirm whether or not the channel has been selected to a desired channel. An example of processing in each channel selection method will be described below.

<Example of one-touch tuning process>
(1) A service of “service_id” designated by “remote_control_key_id” is selected by pressing a one-touch key on the remote controller.
(2) Set the last mode and display channel information after tuning.

<Example of up / down channel selection by channel up / down button>
(1) Channel selection is performed in the order of three-digit numbers used for direct channel selection by pressing the channel up / down key on the remote controller.
(1-1) When the up key is pressed, the upper adjacent service with a three-digit number is selected. However, if the current 3-digit number value is the service list maximum value, the service with the minimum number is selected.
(1-2) When the down key is pressed, the lower adjacent service of the three-digit number is selected. However, if the current 3-digit number value is the service list minimum value, the service with the maximum number is selected.
(2) Set the last mode and display channel information after tuning.

<Example of direct tuning processing>
(1) When direct channel selection is selected, the system waits for input of a three-digit number.
(2-1) When the input of the three-digit number is not completed within a predetermined time (about 5 seconds), the normal mode is restored and the channel information of the currently selected service is displayed.
(2-2) When the entry of the 3-digit number is completed, it is determined whether the channel exists in the service list of the receivable frequency table, and if not, a message such as “This channel does not exist” is displayed. To do.
(3) If a channel exists, the channel selection process is performed, the last mode is set, and the channel information is displayed after channel selection.

  Note that the channel selection operation is performed based on SI, and when it is determined that the broadcast is suspended, it may have a function of displaying that fact and notifying the user.

<Remote control of broadcast receiver>
FIG. 12A illustrates an example of an external view of a remote controller (remote controller) used for inputting an operation instruction to the broadcast receiving apparatus 100 according to the embodiment of the present invention.

  The remote controller 180R includes a power key 180R1 for turning on / off the power of the broadcast receiving apparatus 100 (standby on / off), and cursor keys (up, down, left, right) 180R2 for moving the cursor up / down / left / right. , A determination key 180R3 for determining the item at the cursor position as a selection item, and a return key 180R4.

  The remote controller 180R also includes a network switching key (altitude terrestrial digital, terrestrial digital, altitude BS, BS, CS) 180R5 for switching the broadcast network received by the broadcast receiving apparatus 100. The remote control 180R also has a one-touch key (1-12) 180R6 used for one-touch channel selection, a channel up / down key 180R7 used for channel up / down channel selection, and a three-digit number input for direct channel selection. 10 keys used for the. In the example shown in the figure, the 10 key is also used as the one-touch key 180R6, and in the case of direct channel selection, a three-digit number can be input by operating the one-touch key 180R6 directly after pressing the key 180R8. .

  The remote controller 180R includes an EPG key 180R9 for displaying a program guide and a menu key 180RA for displaying a system menu. The program guide and system menu can be operated in detail by using the cursor key 180R2, the enter key 180R3, and the return key 180R4.

  In addition, the remote controller 180R includes a d key 180RB used for a data broadcasting service, a multimedia service, etc., a cooperation key 180RC for displaying a list of broadcast communication cooperation services and corresponding applications, and color keys (blue, red, green). , Yellow) 180RD. In a data broadcasting service, a multimedia service, a broadcasting / communication cooperation service, and the like, detailed operations can be performed using the cursor key 180R2, the determination key 180R3, the return key 180R4, and the color key 180RD.

  The remote controller 180R also has a video key 180RE for selecting a related video, an audio key 180RF for switching the audio ES and bilingual, an on / off switching of subtitles, and a subtitle language switching. A subtitle key 180RG. The remote controller 180R also includes a volume key 180RH for increasing / decreasing the volume of audio output and a mute key 180RI for switching on / off of the audio output.

<Example of network switching process using altitude digital key>
The remote control 180R of the broadcast receiving apparatus 100 according to the embodiment of the present invention includes “altitude digital key”, “terrestrial digital key”, “advance BS key”, “BS key”, and “CS key” as the network switching key 180R5. Here, the “advanced digital key” and “terrestrial digital key” are used in the advanced digital terrestrial broadcasting service, for example, when simultaneous broadcasting of 4K broadcast programs and 2K broadcast programs is performed at different levels. In the pressed state, channel selection of 4K broadcast programs may be prioritized when a channel is selected, and in the state where a “terrestrial digital key” is pressed, channel selection of 2K broadcast programs may be prioritized. By controlling in this way, for example, when there are many errors in the transmission wave of a 4K broadcast program in a situation where a 4K broadcast program can be received, the 2K broadcast is forcibly performed by pressing the “terrestrial digital key”. Control such as the ability to select a program is possible.

<Example of screen display during tuning>
As described above, the broadcast receiving apparatus 100 according to the embodiment of the present invention, when channel selection is performed by one-touch channel selection, channel up / down channel selection, direct channel selection, or the like, It has a function to display information.

  FIG. 12B shows an example of a banner display at the time of channel selection. The banner display 192A1 is an example of a banner display that is displayed when a 2K broadcast program is selected. For example, the program name, the start time / end time of the program, the network type, the number of the direct channel selection key on the remote control, and the service logo And a three-digit number may be displayed. The banner display 192A2 is an example of a banner display that is displayed when a 4K broadcast program is selected. For example, in addition to the same information as the banner display 192A1, the program being received is a 4K broadcast program. Further, a mark symbolizing “altitude” is displayed. In addition, when resolution conversion processing, downmix processing, or the like is performed, a display indicating that may be performed. In the example of the banner display 192A2, as an example, it is displayed that a down-conversion process from UHD resolution to HD resolution and a down-mix process from 22.2 ch to 5.1 ch have been performed.

  By performing these displays in the broadcast receiving apparatus 100, when the same content is simultaneously broadcast as different quality broadcast programs such as 2K broadcast programs and 4K broadcast programs by simulcast or the like, It is possible for the user to properly grasp whether or not is displayed.

  According to the system of the advanced digital broadcasting service having part or all of the functions according to the embodiments of the present invention described above, the advanced digital broadcasting with higher functionality considering the compatibility with the current digital broadcasting service. It becomes possible to provide a transmission technique and a reception technique of a broadcast service. That is, it is possible to provide a technique for transmitting or receiving the advanced digital broadcasting service more suitably.

  As mentioned above, although the example of embodiment of this invention was demonstrated, the structure which implement | achieves the technique of this invention is not restricted to the said Example, Various modifications can be considered. For example, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. These all belong to the category of the present invention. In addition, numerical values, messages, and the like appearing in sentences and drawings are merely examples, and the use of different ones does not impair the effects of the present invention.

  The functions and the like of the present invention described above may be realized by hardware by designing some or all of them, for example, by an integrated circuit. Further, the microprocessor unit or the like may be realized by software by interpreting and executing an operation program that realizes each function or the like. Hardware and software may be used together.

  The software for controlling the broadcast receiving device 100 may be stored in advance in the ROM 103 and / or the storage unit 110 of the broadcast receiving device 100 at the time of product shipment. It may be acquired from another application server 500 on the Internet 200 via the LAN communication unit 121 after product shipment. Further, the software stored in a memory card, an optical disk, or the like may be acquired via the expansion interface unit 124 or the like. Similarly, the software for controlling the portable information terminal 700 may be stored in advance in the ROM 703 and / or the storage unit 710 of the portable information terminal 700 at the time of product shipment. It may be acquired from other application servers 500 on the Internet 200 via the LAN communication unit 721 or the mobile telephone network communication unit 722 after the product is shipped. Further, the software stored in a memory card, an optical disk or the like may be acquired via the extension interface unit 724 or the like.

  In addition, the control lines and information lines shown in the figure are those that are considered necessary for the explanation, and do not necessarily indicate all the control lines and information lines on the product. In practice, it may be considered that almost all the components are connected to each other.

  100: Broadcast receiving apparatus, 101: Main control unit, 102: System bus, 103: ROM, 104: RAM, 110: Storage (storage) unit, 121: LAN communication unit, 124: Expansion interface unit, 125: Digital interface unit , 130C, 130T, 130L, 130B: tuner / demodulator, 140S, 140U: decoder, 180: operation input unit, 191: video selection unit, 192: monitor unit, 193: video output unit, 194: audio selection unit, 195: Speaker unit, 196: Audio output unit, 180R: Remote controller, 200, 200T, 200L, 200B: Antenna, 300, 300T, 300L: Radio tower, 400C: Head end of cable TV station, 400: Broadcast station server, 500 : Service provider server, 600: Mobile phone Distribution server, 600B: a base station, 700: portable information terminal, 800: Internet, 800R: a router device.

Claims (3)

A transmission wave processing method in a digital broadcasting system,
In the digital broadcasting system, a transmission step of transmitting a plurality of different transmission waves in a plurality of different polarization directions;
A reception step of receiving a plurality of different transmission waves transmitted in the transmission step;
A demodulation step for demodulating the transmission wave received in the reception step to generate a stream;
With
In the plurality of different transmission waves transmitted in the transmission step, identification information capable of identifying the plurality of different transmission wave pairs necessary for generating the stream in the demodulation step is stored. ,
Transmission wave processing method. In the transmission wave processing method according to claim 1,
The transmission wave processing method, wherein the identification information is stored in a carrier that is modulated differently from a data carrier in the plurality of different transmission waves. In the transmission wave processing method according to claim 1,
The plurality of different transmission waves each have a predetermined bandwidth divided into a predetermined number of segments,
In the demodulation step, a part of segments transmitted by the first transmission wave included in the plurality of pairs of different transmission waves identified based on the identification information and the number of pairs included in the plurality of pairs of different transmission waves A transmission wave processing method for generating the stream based on a part of segments transmitted by two transmission waves.

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