JP2019216357A - Broadcast receiver - Google Patents

Abstract

To provide a technique for transmitting or receiving an advanced digital broadcast service more suitably.SOLUTION: A broadcast receiver includes: a tuner for receiving a transmission wave in which identification information capable of identifying a frequency band when a transmission wave is transmitted in the air is stored in a carrier modulated differently from a data carrier; and a control section. The control section identifies a frequency band when the transmission wave is transmitted in the air, using the identification information included in a transmission wave received by the tuner.SELECTED DRAWING: Figure 2A

Description

  The present invention relates to a broadcast transmission technique or a broadcast reception technique.

  Digital broadcasting services have begun in various countries since the late 1990s, replacing conventional analog broadcasting services. Digital broadcasting services include improving broadcast quality using error correction technology, increasing the number of channels and using HD (High Definition) using compression coding technology, Broadcast Markup Language (BML), and Hyper Text Markup Language (HTML5). The services used have been converted to multimedia.

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

JP-A-2006-14420

  The current digital broadcasting has been in service for more than 10 years, and broadcast receiving apparatuses capable of receiving the current digital broadcasting service have been widely used. For this reason, when starting the advanced digital broadcasting service currently under consideration, it is necessary to consider compatibility with the current digital broadcasting service. That is, it is preferable to realize a UHD (Ultra High Definition) video signal or the like while maintaining the viewing environment of the current digital broadcasting service.

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

  SUMMARY OF THE INVENTION An object of the present invention is to provide a technology for transmitting or receiving a more advanced digital broadcasting service with higher functionality in consideration of compatibility with existing digital broadcasting services.

  The technology described in the claims is used as means for solving the problem.

  For example, a tuner that receives a transmission wave in which identification information capable of identifying a frequency band when the transmission wave is transmitted in the air is stored on a carrier that is modulated differently from the data carrier, and a control unit. The control unit may be configured to identify a frequency band when the transmission wave is transmitted in the air using the identification information included in the transmission wave received by the tuner.

  ADVANTAGE OF THE INVENTION According to this invention, the technique of transmitting or receiving an advanced digital broadcasting service more suitably can be provided.

FIG. 1 is a system configuration diagram of a broadcast system according to an embodiment of the present invention. FIG. 2 is a block diagram of a broadcast receiving device according to one embodiment of the present invention. FIG. 3 is a detailed block diagram of a first tuner / demodulation unit of the broadcast receiving device according to one embodiment of the present invention. FIG. 4 is a detailed block diagram of a second tuner / demodulation unit of the broadcast receiving device according to one embodiment of the present invention. FIG. 3 is a detailed block diagram of a third tuner / demodulation unit of the broadcast receiving device according to one embodiment of the present invention. FIG. 9 is a detailed block diagram of a fourth tuner / demodulator of the broadcast receiving device according to one embodiment of the present invention. FIG. 3 is a detailed block diagram of a first decoder unit of the broadcast receiving device according to one embodiment of the present invention. FIG. 3 is a detailed block diagram of a second decoder unit of the broadcast receiving device according to one embodiment of the present invention. FIG. 3 is a software configuration diagram of the broadcast receiving device according to one embodiment of the present invention. FIG. 2 is a configuration diagram of a broadcast station server according to one embodiment of the present invention. FIG. 2 is a configuration diagram of a service provider server according to one embodiment of the present invention. FIG. 3 is a diagram illustrating a segment configuration related to digital broadcasting according to an embodiment of the present invention. FIG. 3 is a diagram illustrating layer assignment in layer transmission related to digital broadcasting according to one embodiment of the present invention. FIG. 3 is a diagram illustrating a process of generating an OFDM transmission wave according to digital broadcasting according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a basic configuration of a transmission line encoding unit according to digital broadcasting according to an embodiment of the present invention. FIG. 3 is a diagram for describing segment parameters of the OFDM scheme according to digital broadcasting according to an embodiment of the present invention. FIG. 3 is a diagram illustrating transmission signal parameters related to digital broadcasting according to one embodiment of the present invention. FIG. 3 is a diagram illustrating an arrangement of pilot signals of a synchronous modulation segment according to digital broadcasting according to an embodiment of the present invention. FIG. 4 is a diagram illustrating an arrangement of pilot signals of a differential modulation segment according to digital broadcasting according to an embodiment of the present invention. FIG. 3 is a diagram illustrating bit allocation of TMCC carriers according to digital broadcasting according to one embodiment of the present invention. FIG. 4 is a diagram illustrating bit allocation of TMCC information according to digital broadcasting according to one embodiment of the present invention. It is a figure explaining the transmission parameter information of TMCC information concerning digital broadcasting of one example of the present invention. It is a figure explaining system identification of TMCC information concerning digital broadcasting of one example of the present invention. FIG. 3 is a diagram illustrating a carrier modulation mapping method of TMCC information related to digital broadcasting according to one embodiment of the present invention. FIG. 3 is a diagram illustrating frequency conversion processing identification of TMCC information related to digital broadcasting according to one embodiment of the present invention. FIG. 4 is a diagram illustrating physical channel number identification of TMCC information related to digital broadcasting according to one embodiment of the present invention. It is a figure explaining an example of main signal identification of TMCC information concerning digital broadcasting of one example of the present invention. It is a figure explaining 4K signal transmission layer identification of TMCC information concerning digital broadcasting of one example of the present invention. FIG. 4 is a diagram illustrating additional layer transmission identification of TMCC information related to digital broadcasting according to one embodiment of the present invention. It is a figure explaining the bit allocation of the AC signal concerning digital broadcasting of one example of the present invention. FIG. 2 is a diagram for explaining the configuration identification of an AC signal related to digital broadcasting according to one embodiment of the present invention. It is a figure explaining the seismic-motion warning information of the AC signal concerning digital broadcasting of one example of the present invention. It is a figure explaining signal identification of the seismic-motion warning information of the AC signal concerning digital broadcasting of one example of the present invention. It is a figure explaining the seismic-motion warning detailed information of the seismic-motion warning information of the AC signal concerning 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 concerning digital broadcasting of one Example of this invention. It is a figure explaining additional information about transmission control of a modulated wave of an AC signal concerning digital broadcasting of one example of the present invention. It is a figure explaining transmission parameter additional information of AC signal concerning digital broadcasting of one example of the present invention. FIG. 2 is a diagram illustrating an error correction method for an AC signal according to digital broadcasting according to an embodiment of the present invention. It is a figure explaining the NUC format of the AC signal concerning digital broadcasting of one example of the present invention. FIG. 2 is a diagram illustrating a dual-polarization transmission system according to one embodiment of the present invention. FIG. 1 is a system configuration diagram of a broadcasting system using a dual-polarization transmission system according to one embodiment of the present invention. FIG. 1 is a system configuration diagram of a broadcasting system using a dual-polarization transmission system according to one embodiment of the present invention. FIG. 5 is a diagram illustrating a frequency conversion process according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a pass-through transmission system according to one embodiment of the present invention. FIG. 4 is a diagram illustrating a pass-through transmission band according to one embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration of a pass-through transmission system according to one embodiment of the present invention. FIG. 4 is a diagram illustrating a pass-through transmission band according to one embodiment of the present invention. FIG. 4 is a diagram illustrating a pass-through transmission band according to one embodiment of the present invention. FIG. 2 is a diagram illustrating a hierarchical division multiplexing transmission method according to one embodiment of the present invention. 1 is a system configuration diagram of a broadcasting system using a hierarchical division multiplex transmission system according to one embodiment of the present invention. FIG. 3 is a diagram illustrating a frequency conversion amplification process according to one embodiment of the present invention. FIG. 3 is a diagram illustrating a protocol stack of MPEG-2 TS. FIG. 3 is a diagram illustrating names and functions of tables used in MPEG-2 TS. FIG. 3 is a diagram illustrating names and functions of tables used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 4 is a diagram for describing names and functions of descriptors used in MPEG-2 TS. FIG. 3 is a diagram illustrating a protocol stack in an MMT broadcast transmission path. FIG. 3 is a diagram for describing a protocol stack in an MMT communication line. FIG. 3 is a diagram illustrating names and functions of tables used in the TLV-SI of the MMT. FIG. 3 is a diagram for explaining names and functions of descriptors used in TLV-SI of MMT. FIG. 4 is a diagram illustrating names and functions of messages used in MMT-SI of MMT. FIG. 3 is a diagram illustrating names and functions of tables used in MMT-SI of MMT. FIG. 3 is a diagram illustrating names and functions of descriptors used in MMT-SI of MMT. FIG. 3 is a diagram illustrating names and functions of descriptors used in MMT-SI of MMT. FIG. 3 is a diagram illustrating names and functions of descriptors used in MMT-SI of MMT. FIG. 3 is a diagram illustrating a relationship between MMT data transmission and each table. FIG. 9 is an operation sequence diagram of a channel setting process of the broadcast receiving device 100 according to one embodiment of the present invention. FIG. 3 is a diagram illustrating a data configuration of a network information table. It is a figure explaining the data structure of a terrestrial distribution system descriptor. FIG. 4 is a diagram illustrating a data configuration of a service list descriptor. It is a figure explaining the data structure of TS information descriptor. 1 is an external view of a remote controller according to one embodiment of the present invention. It is a figure explaining banner display at the time of channel selection concerning one example of the present invention.

  Hereinafter, embodiments 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 broadcast system.

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

  The broadcast receiving device 100 is a television receiver having a function of receiving an advanced digital broadcast service. The broadcast receiving apparatus 100 may further include a function of receiving an existing digital broadcast service. Furthermore, by linking a function using a broadband network to a digital broadcasting service (existing digital broadcasting service or advanced digital broadcasting service), obtaining additional contents via the broadband network, performing arithmetic processing in a server device, and cooperating with a mobile terminal device. It is possible to cope with a broadcasting / communication cooperation system that combines presentation processing and the like with digital broadcasting services. The broadcast receiving apparatus 100 receives a digital broadcast wave transmitted from the radio tower 300 via the antenna 200. The digital broadcast wave may be transmitted directly 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 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. Thus, each server device, the broadcast receiving device 100, and the portable information terminal 700 on the Internet 800 can mutually transmit and receive data via the router device 800R. The router device 800R, the broadcast receiving device 100, and the portable information terminal 700 constitute a LAN (Local Area Network). 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 broadcast facility of a broadcasting station, and transmits digital broadcast waves including various control information related to digital broadcast services, content data of a broadcast program (moving image content, audio content, and the like), and the like. The broadcasting station includes a broadcasting station server 400. The 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 prepared by a service provider to provide a service provided by the broadcast 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 (operation programs and / or various data, etc.) produced for the broadcast communication cooperation system. Perform distribution, etc. It also has a function of searching for applications that can be provided and providing a list in response to an inquiry from the television receiver. Note that the storage, management, distribution, and the like of the content data and metadata and the storage, management, distribution, and the like of the application may be performed by different server devices. The broadcasting station and the service provider may be the same or different providers. 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, while being 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 of the portable information terminal 700 via the mobile telephone communication network, and performs data transmission between the portable information terminal 700 and each server device on the Internet 800. Transmission and reception. Communication between portable information terminal 700 and broadcast receiving device 100 may be performed via base station 600B, mobile telephone communication server 600, Internet 800, and router device 800R.

[Hardware configuration of broadcast receiving device]
FIG. 2A is a block diagram illustrating an example of an internal configuration of the broadcast receiving device 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 extension interface unit 124, a digital interface unit 125, a first tuner / demodulation unit 130C, Two tuner / demodulator 130T, third tuner / demodulator 130L, fourth tuner / demodulator 130B, first decoder 140S, second decoder 140U, operation input unit 180, video selector 191, monitor 192, video It comprises an output unit 193, an audio selection unit 194, a speaker unit 195, and an audio output unit 196.

  The main control unit 101 is a microprocessor unit that controls the entire broadcast receiving device 100 according to a predetermined operation program. The 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 device 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 is 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 the 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 operation programs and operation setting values of the broadcast receiving device 100, personal information of the user of the broadcast receiving device 100, and the like. In addition, an operation program downloaded via the Internet 800 and various data created by the operation program can be stored. In addition, contents such as moving images, still images, and sounds acquired from broadcast waves or downloaded via the Internet 800 can be stored. Some or all of the functions of the ROM 103 may be replaced by a partial area of the storage (storage) unit 110. Further, the storage (storage) unit 110 needs to hold the stored information even when power is not supplied to the broadcast receiving apparatus 100 from the outside. Therefore, for example, devices such as a semiconductor element memory such as a flash ROM and an SSD (Solid State Drive), and a magnetic disk drive such as an HDD (Hard Disc Drive) are 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 a part thereof) of a program transmitted via a communication line is obtained. 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 an encoding circuit, a decoding circuit, and the like. In addition, the broadcast receiving apparatus 100 may further include another communication unit 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 the main control unit 101 A tuning process (channel selection) is performed by tuning to a channel of a predetermined service based on the control. Further, it performs demodulation processing and waveform shaping processing of a modulated wave of the received signal, reconstruction processing of a frame structure and a hierarchical structure, energy despreading processing, error correction decoding processing, and the like, and reproduces a packet stream. Further, it extracts and decodes a transmission TMX (Transmission Multiplexing Configuration Control) signal from the received signal.

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

  The expression “tuner / demodulator” means a component having a tuner function and a demodulation 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 form a part of the broadcast receiving device 100, but a building in which the broadcast receiving device 100 is installed. Etc. belong to the equipment side.

  Further, the above-mentioned current terrestrial digital broadcasting is a broadcasting signal of a terrestrial digital broadcasting service for transmitting an image having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels.

  Although the details of the dual-use terrestrial digital broadcasting (advanced terrestrial digital broadcasting using the dual-use polarization transmission method) will be described later, it is possible to transmit an image having the maximum number of pixels exceeding 1920 horizontal pixels × 1080 vertical pixels. This is a broadcast signal of a terrestrial digital broadcasting service. The dual-use terrestrial digital broadcasting is terrestrial digital broadcasting that uses a plurality of polarizations of horizontal (H) polarization and vertical (V) polarization. In this segment, a terrestrial digital broadcast service capable of transmitting an image having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels is transmitted.

  In the description of the embodiments of the present invention, when the expression “plural polarizations” is used for the dual-use terrestrial digital broadcasting, the horizontal (H) polarization and the vertical (V) polarization are used unless otherwise specified. It means the two polarizations of the wave. Also, the expression “polarized wave” simply means “polarized signal”. Further, in one or both polarizations of a plurality of polarizations, the above current digital terrestrial broadcasting, which transmits video having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels in some of the divided segments, uses the same modulation scheme. Can be transmitted. That is, in the dual-use terrestrial digital broadcasting, the current terrestrial digital broadcasting service that transmits a video having a maximum resolution of 1920 pixels horizontally × 1080 pixels vertically in a plurality of different polarization segments according to the embodiments of the present invention, A terrestrial digital broadcasting service capable of transmitting an image having a maximum resolution of more than 1920 pixels × vertical 1080 pixels can be simultaneously transmitted.

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

  The broadcast receiving apparatus according to each embodiment of the present invention may have any configuration as long as it can suitably receive advanced digital broadcasting, and includes a first tuner / demodulator 130C, a second tuner / demodulator 130T, and a third tuner / demodulator. It is not essential that all of the unit 130L and the fourth tuner / demodulation unit 130B be provided. For example, at least one of the second tuner / demodulator 130T and the third tuner / demodulator 130L may be provided. Further, in order to realize more advanced functions, one or more of the above four tuners / demodulators may be provided in addition to one of the second tuner / demodulator 130T or 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 tuners / demodulation units may be appropriately used (or integrated).

  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 obtained 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 include MPEG (Moving Picture Experts Group) -2 TS (Transport Stream), MPEG-2 PS (Program Stream), TLV (Type Length, MTV) (MPEG Media Transport).

  The first decoder unit 140S and the second decoder unit 140U respectively perform conditional access (Conditional Access: CA) processing, video data, audio data, and various information data from the packet stream based on various control information included in the packet stream. Demultiplexing processing for separating and extracting data, decoding processing of video data and audio data, acquisition of program information and generation of an EPG (Electronic Program Guide), reproduction processing of a data broadcast screen and multimedia data, and the like. . Further, 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 selects and / or superimposes the video data appropriately based on the control of the main control unit 101. Is performed. In addition, the video selection unit 191 appropriately performs scaling processing, superimposition processing of OSD (On Screen Display) data, and the like. The monitor unit 192 is, for example, a display device such as a liquid crystal panel, and displays the video data selected and / or superimposed by the video selection unit 191 and provides the video data to the user of the broadcast receiving apparatus 100. The video output unit 193 is a video output interface that outputs the 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 or the like as appropriate under the control of the main control unit 101. Is performed. The speaker unit 195 outputs the audio data selected and / or mixed by the audio selection unit 194 and provides the audio data to the user of the broadcast receiving apparatus 100. The audio output unit 196 is an audio output interface that outputs the audio data 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. The digital interface unit 125 is configured such that the first decoder unit 140S and the second decoder unit 140U receive signals from 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. Further, control may be performed such 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 such 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 a group of interfaces for extending the function 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 inputs an analog video signal / audio signal from an external video / audio output device, outputs an analog video signal / audio signal to an external video / audio input device, and the like. The USB interface connects to a PC or the like to transmit and receive data. An HDD may be connected to record broadcast programs and other content data. Further, a keyboard or other USB devices may be connected. The memory interface transmits and receives data by connecting a memory card or another memory medium.

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

  When the broadcast receiving device 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 receiving function. When the broadcast receiving device 100 is a DVD recorder, an HDD recorder, an 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, the same operation as that of a television receiver or the like can be performed.

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

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

  Based on the TMCC information and the like, the demodulation unit 133 </ b> C modulates a signal obtained by modulating a signal obtained by modulating a signal obtained by modulating a wave obtained by modulating a wave obtained by modulating a wave obtained by inputting a modulated wave such as QPSK (Quadrature Phase Shift Keying), DQPSK (Differential QPSK), 16QAM (Quadrature Amplitude Modulation), or 64QAM. Perform demodulation processing including frequency deinterleaving, time deinterleaving, carrier demapping processing, and the like. The demodulation unit 133C may further be able to support a modulation scheme different from each of the above-described modulation schemes.

  The stream reproducing unit 134C performs hierarchical code division processing, inner code error correction processing such as Viterbi decoding, energy despreading processing, stream reproduction processing, outer code error correction processing such as RS (Reed Solomon) decoding, and the like. As the error correction processing, a method different from each of the above-described methods may be used. 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 / demodulation unit 130T.

  The tuning / 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 inputs a vertical (V) polarization signal of the digital broadcast wave received by the antenna 200T, and performs channel selection based on a channel selection control signal. The operation of the channel selection process in the tuning / detection unit 131H and the operation of the channel selection process in the tuning / 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 one of the digital broadcasting services transmitted using both horizontal and vertical polarizations. It is also possible to control so as to select two channels, and it is assumed that the channel selection / detection unit 131H and the channel selection / detection unit 131V are two independent channel selection / detection units, and only horizontal polarization (or It is also possible to control so as to select two different channels of a digital broadcasting service transmitted using only vertically polarized waves.

  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 according to each embodiment of the present invention are based on broadcast waves whose polarization directions are different from each other by approximately 90 degrees. Any configuration may be used as long as it is a polarization signal, and the configuration relating to the horizontal (H) polarization signal, the vertical (V) polarization signal, and the reception thereof described below may be reversed.

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

  The demodulation unit 133H and the demodulation unit 133V respectively perform BPSK (Binary Phase Shift Keying), DBPSK (Differential BPSK), QPSK, DQPSK, and 8PSK (Phase Shift KeyingPhashPhashPK). ), 32APSK, 16QAM, 64QAM, 256QAM, 1024QAM, etc., and inputs a modulated wave, and performs demodulation processing including frequency deinterleaving, time deinterleaving, carrier demapping processing, and the like. The demodulation unit 133H and the demodulation unit 133V may be able to further support a modulation scheme different from each of the above-described modulation schemes.

  The stream reproducing unit 134H and the stream reproducing unit 134V respectively perform hierarchical 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. And other outer code error correction processing. As the error correction processing, a method different from each of the above-described methods may be used. 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 an MMT packet stream. Each may be a packet stream of another format.

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

  The channel selection / detection unit 131L receives, from the antenna 200L, a digital broadcast wave that has been subjected to Layered Division Multiplexing (LDM) processing, and performs channel selection based on a channel selection control signal. The digital broadcast wave that has been subjected to the hierarchical division multiplexing process is a digital broadcast service in which a modulated wave of an upper layer (UL) and a modulated wave of a lower layer (Lower Layer: LL) are different (or different in the same broadcast service). Channel). The modulated wave of the upper layer is output to the demodulation unit 133S, and the modulated wave of the lower layer is output to the demodulation unit 133L.

  The TMCC decoding unit 132L receives the modulated wave of the upper layer and the modulated wave of the lower layer output from the tuning / 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 the modulation wave of the upper layer and the modulation wave of the lower layer.

  The demodulation unit 133S and the demodulation unit 133L perform the same operation as the demodulation unit 133H and the demodulation unit 133V, and thus the detailed description is omitted. Further, the stream reproducing unit 134S and the stream reproducing unit 134L perform the same operation as the stream reproducing unit 134H and the stream reproducing unit 134V, respectively, and thus the detailed description is omitted.

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

  The channel selection / detection unit 131B receives the digital broadcast wave of the advanced BS digital broadcast service or advanced CS digital broadcast service received by the antenna 200B, and performs channel selection based on the channel selection control signal. Other operations are the same as those of the channel selection / detection unit 131H and the channel selection / detection unit 131V, and a detailed description thereof will be omitted. Further, the TMCC decoding unit 132B, the demodulation unit 133B, and the stream reproduction unit 134B also perform the same operations as the TMCC decoding unit 132H and the TMCC decoding unit 132V, and 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 input from the third tuner / demodulation unit 130L. One of the selected packet streams is output. A 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 predetermined scrambling encryption algorithm decryption process on the basis of various control information related to conditional access 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 a video decoder 145S, the separated and extracted audio data is distributed to an audio decoder 146S, and the separated and extracted character super data, subtitle data, program information data, and the like are distributed to a data decoder 144S. A packet stream (for example, MPEG-2 PS) acquired from a server device on the Internet 800 via the LAN communication unit 121 may be input to the demultiplexing unit 143S. Further, the demultiplexing unit 143S can output a packet stream input from the first tuner / demodulation unit 130C, the second tuner / demodulation unit 130T, or the third tuner / demodulation unit 130L to the outside via the digital interface 125. It is possible to input a packet stream obtained from outside via the digital interface 125.

  The video decoder 145S performs, on the video data input from the demultiplexing unit 143S, a decoding process of video information subjected to compression encoding, a colorimetric conversion process, a dynamic range conversion process, and the like on the decoded video information. Further, processing such as resolution conversion (up / down conversion) based on the control of the main control unit 101 is performed, and UHD (3840 horizontal pixels × 2160 vertical pixels), HD (1920 horizontal pixels × 1080 vertical pixels), SD ( Video data is output at a resolution such as 720 horizontal pixels × 480 vertical pixels. Video data output at other resolutions may be performed. The audio decoder 146S performs a decoding process on the audio information that has been subjected to the compression encoding. In addition, it performs downmix processing and the like based on the control of the main control unit 101, and outputs audio data in 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 decoding processes of video data and audio data.

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

  The superimposing unit 147S, the superimposing unit 148S, and the superimposing unit 149S perform a superimposing process on the video data output from the video decoder 145S and the EPG or the 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 selects the resolution of the video data based on the control of the main control unit 101. Note that the functions of the superimposition unit 147S, the superimposition unit 148S, the superimposition unit 149S, and the selection unit 150S may be integrated with the video selection unit 191. The function of the synthesizing unit 151S may be integrated with the voice selecting 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 controller 101, the selector 141U receives the packet stream input from the second tuner / demodulator 130T, the packet stream input from the third tuner / demodulator 130L, and the input from the fourth tuner / demodulator 130B. One of the packet streams is selected and output. The packet stream input from the second tuner / demodulator 130T, the third tuner / demodulator 130L, or the fourth tuner / demodulator 130B is, for example, an MMT packet stream or a TLV including an MMT packet stream. An MPEG-2 TS format packet stream employing HEVC (High Efficiency Video Coding) or the like as the video compression method may be used. The CA descrambler 142U performs a decryption process of a predetermined scrambling encryption algorithm based on various control information related to conditional access superimposed on the packet stream.

  The demultiplexing unit 143U 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 a video decoder 145U, the separated and extracted audio data is distributed to an audio decoder 146U, and the separated and extracted character super data, subtitle data, program information data, and the like are distributed to a multimedia decoder 144U. . A packet stream (for example, an MPEG-2 PS or an 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 a 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 obtained from outside via the digital interface 125.

  The multimedia decoder 144U performs processing for generating an EPG based on program information data, processing for generating a multimedia screen based on multimedia data, control processing for a cooperative application based on a broadcast communication cooperative function, and the like. The multimedia decoder 144U has an HTML browser function for executing an HTML document, and the multimedia screen generation processing 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 a video decoder 145S, an audio decoder 146S, a superimposing unit 147S, a superimposing unit 148S, and a superimposing unit 149S. It is a component having the same function as the synthesizing unit 151S and the selecting unit 150S. In the description of the video decoder 145S, the audio decoder 146S, the superimposing unit 147S, the superimposing unit 149S, the superimposing unit 149S, the synthesizing unit 151S, and the selecting unit 150S in FIG. Of 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 in FIG.

[Software configuration of broadcast receiver]
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 the 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. The storage (storage) unit 110 includes a content storage area 1011 for storing content data such as a moving image, a still image, and audio, authentication information used for communication and cooperation with an external portable terminal device, a server device, and the like. And an information storage area 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 configure the basic operation control unit 1101. Also, the reception function program 1002, the browser program 1003, and the content management program 1004 stored in the storage (storage) unit 110 are loaded on the RAM 104, respectively, and the main control unit 101 executes each of the loaded operation programs. Thus, the reception function control unit 1102, the browser engine 1103, and the content management unit 1104 are configured. In addition, the RAM 104 is provided with a temporary storage area 1200 for temporarily storing data created when each operation program is executed, as needed.

  In the following, for the sake of simplicity, the main control unit 101 expands the basic operation program 1001 stored in the storage (accumulation) unit 110 in the RAM 104 and executes it to control each operation block. Are described as those in which the basic operation control unit 1101 controls each operation block. Similar descriptions are made for other operation programs.

  The reception function control unit 1102 performs basic control of the broadcast reception device 100 such as a broadcast reception function and a broadcast communication cooperation function. 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 performs hierarchical division processing, error correction decoding processing, and energy conversion in the first tuner / demodulator 130C, the second tuner / demodulator 130T, the third tuner / demodulator 130L, the fourth tuner / demodulator 130B, and the like. It mainly controls despreading processing, stream reproduction processing, and the like. 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 reproducing unit 1102d includes a BML data reproducing process, a character super data decoding process, a subtitle data decoding process, a communication cooperative application control process in the first decoder unit 140S, and an HTML data reproducing process in the second decoder unit 140H. And multimedia screen generation processing, communication cooperative application control processing, and the like. The EPG generation unit 1102e mainly controls the EPG generation processing and the display processing of the generated EPG in the first decoder unit 140S and the second decoder unit 140H. The presentation processing unit 1102f controls colorimetric 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. And so on.

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

  The content management unit 1104 manages time schedule and controls execution of recording reservation and viewing reservation of a broadcast program, and copyright for outputting a broadcast program, a recorded program, and the like from the digital I / F 125 and the LAN communication unit 121. It performs management and expiration date management of the cooperative application acquired based on the broadcast communication cooperative function.

  Each of the operation programs may be stored in the storage (storage) unit 110 and / or the ROM 103 in advance at the time of product shipment. After the product is shipped, it may be obtained from a server device on the Internet 800 via the LAN communication unit 121 or the like. Further, the respective operation programs stored in a memory card, an optical disk, or the like may be obtained via the extension interface unit 124 or the like. It may be newly acquired or updated via a broadcast wave.

[Configuration of broadcasting station server]
FIG. 3A is an example of an 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. The 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 is a work area when each operation program is executed.

  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 and the like 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, cast, broadcast date and time of each broadcast program.

  The basic operation program 4001, the content management / distribution program 4002, and the content transmission program 4003 stored in the storage unit 410 are respectively loaded on the RAM 404. By executing the distribution program and the content transmission program, a basic operation control unit 4101 and a content management / distribution control unit 4102 constitute a content transmission control unit 4103.

  In the following, for the sake of simplicity, a process in which the main control unit 401 expands the basic operation program 4001 stored in the storage unit 410 in the RAM 404 and executes the program to control each operation block will be described. The operation control unit 4101 is described as controlling each operation block. Similar descriptions are made for other operation programs.

  The content management / delivery control unit 4102 manages the content data and metadata stored in the content data storage area 4011 and the metadata storage area 4012, and sends the content data and metadata to the service provider based on a contract. Control when providing. Further, 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 content data of a broadcast program stored in the content data storage area 4011, a program title of a broadcast program stored in the metadata storage area 4012, a program ID, copy control information of program content, and the like. The time schedule management and the like when transmitting the stream via the digital broadcast signal transmitting unit 460 are performed.

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

[Configuration of service provider server]
FIG. 3B is an example of an 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 according to a predetermined operation program. The 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 is a work area when each operation program is executed.

  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, or content created by a service provider and metadata related to the content. The application storage area 5013 stores applications (operation programs and / or various data, etc.) necessary for realizing each service of the broadcast / communication cooperation system for distribution in response to a request from each television receiver.

  The basic operation program 5001, the content management / distribution program 5002, and the application management / distribution program 5003 stored in the storage unit 510 are respectively loaded on the RAM 504. 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, for the sake of simplicity, a process in which the main control unit 501 controls each operation block by expanding and executing the basic operation program 5001 stored in the storage unit 510 in the RAM 504 will be described. It is assumed that the operation control unit 5101 controls each operation block. Similar descriptions are made for other operation programs.

  The content management / delivery control unit 5102 acquires 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 It controls distribution of the content data and metadata to the television receiver. Further, the application management / distribution control unit 5103 performs management of each application stored in the application storage area 5013 and control for distributing each application in response to a request from each television receiver. Further, when distributing each application to each television receiver, the application management / distribution control unit 5103 also performs authentication processing of the television receiver as necessary.

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

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

  The broadcast receiving apparatus 100 can receive 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-use terrestrial digital broadcasting that can be received by the second tuner / demodulation unit 130T is an advanced terrestrial digital broadcasting having some specifications common to the ISDB-T system. Further, the hierarchical division multiplex terrestrial digital broadcasting that can be received by the third tuner / demodulation unit 130L is an advanced terrestrial digital broadcasting whose specifications are partially common to the ISDB-T system. The current terrestrial digital broadcast that can be received by the first tuner / demodulation unit 130C is an ISDB-T terrestrial digital broadcast. The advanced BS digital broadcast and 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 dual-use terrestrial digital broadcasting and the hierarchical multiplex terrestrial digital broadcasting according to the present embodiment are one of multi-carrier systems such as OFDM (Orthogonal Frequency Division Multiplexing). Frequency division multiplexing). Since OFDM is a multi-carrier system, the symbol length is long, and it is effective to add a redundant part in the time axis direction called a guard interval, and it is possible to reduce the influence of multipath within the guard interval. It is. For this reason, SFN (Single Frequency Network: single frequency network) can be realized, and the frequency can be used effectively.

  In the dual-use terrestrial digital broadcasting and the hierarchical multiplexed terrestrial digital broadcasting according to the present embodiment, similarly to the ISDB-T system, OFDM carriers are divided 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 the position of segment 0, and segment numbers (0 to 12) are sequentially assigned above and below. The transmission path coding of the dual-use terrestrial digital broadcasting and the hierarchical division multiplexed terrestrial digital broadcasting according to the present embodiment is performed for each OFDM segment. It is thus possible to define a hierarchical transmission, for example, to allocate some OFDM segments to fixed reception services and the rest to mobile reception services 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 a carrier modulation scheme, an inner code coding rate, and a time interleave length can be set for each layer. The number of layers may be set arbitrarily, and may be set to, for example, up to three layers. FIG. 4B shows an example of layer assignment of an OFDM segment when the number of layers is three or two. In the example of FIG. 4B (1), the number of layers is three, the layer A is composed of one segment (segment 0), the layer B is composed of seven segments (segments 1 to 7), and the layer C is five segments ( Segments 8 to 12). In the example of FIG. 4B (2), the number of layers is three, the layer A is composed of one segment (segment 0), the layer B is composed of five segments (segments 1 to 5), and the layer C is seven segments ( Segments 6 to 12). In the example of FIG. 4B (3), the number of hierarchies is two, the A hierarchy is composed of one segment (segment 0), and the B hierarchy is composed of 12 segments (segments 1 to 12). The number of OFDM segments, transmission path coding parameters, and the like for each layer are determined according to the organization information, and are transmitted by a TMCC signal, which 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.

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

  For example, the layer assignment of FIG. 4B (2) can be used as an example different from that of FIG. 4B (1) in the dual-use terrestrial digital broadcasting according to the present embodiment, and the same segment is used for both horizontal polarization and vertical polarization. Hierarchical assignment may be used. Specifically, the current mobile reception service of the current digital terrestrial broadcasting may be transmitted in the above-mentioned one segment of the horizontal polarization as the A-layer. (Note that the current mobile reception service for digital terrestrial broadcasting may transmit the same service in the above-mentioned one segment of vertical polarization. In this case, this is also handled as A layer.) It is configured to transmit an advanced digital terrestrial broadcasting service capable of transmitting an image having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels in a total of 10 segments in the above 5 segments of both waves and vertically polarized waves. May be. Further, as the C layer, a terrestrial digital broadcasting service that transmits a video having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels, which is the current digital terrestrial broadcast, in the above 7 segments of horizontal polarization may be transmitted. (Note that a terrestrial digital broadcasting service transmitting a video having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels may transmit the same service in the above-described 7 segments of vertical polarization. In this case, this is also a C layer. The details of the transmission will be described later. The transmission wave assigned to the segment layer can be received by, for example, the second tuner / demodulation unit 130T of the broadcast receiving apparatus 100 of the present embodiment.

  For example, the hierarchy assignment of FIG. 4B (3) can be used in the hierarchical division multiplexed terrestrial digital broadcasting according to the present embodiment or the current terrestrial digital broadcasting. Specifically, in the case of use in hierarchical division multiplex terrestrial digital broadcasting, the current mobile reception service of the current terrestrial digital broadcasting may be transmitted in one segment in the figure as the A layer. Further, a high-level digital terrestrial broadcasting service capable of transmitting a video having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels in the 12 segments in the figure as the B layer may be transmitted. The transmission wave of the segment layer assignment can be received by, for example, the third tuner / demodulation unit 130L of the broadcast receiving device 100 of the present embodiment. When used in the current terrestrial digital broadcasting, the mobile reception service of the current terrestrial digital broadcasting may be transmitted in one segment in the figure as the A layer, and the current terrestrial digital broadcasting in the 12 segments in the figure as the B layer. A digital terrestrial broadcasting service that transmits a video having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels may be transmitted. The transmission wave assigned to the segment layer can be received by, for example, the first tuner / demodulation unit 130C of the broadcast receiving apparatus 100 of the present embodiment.

  FIG. 4C illustrates an example of a system on the broadcast station side that realizes the process of generating an OFDM transmission wave that is a digital broadcast wave of the dual-use terrestrial digital broadcast and the hierarchical multiplexed terrestrial digital broadcast according to the present embodiment. The information source encoding unit 411 encodes video / audio / various data and the like. The multiplexing unit / conditional reception processing unit 415 multiplexes the video / audio / various data and the like encoded by the information source encoding unit 411, further executes a process corresponding to conditional access as appropriate, and outputs the packet stream. I do. The information source coding unit 411 and the multiplexing unit / conditional reception processing unit 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 differs from the ISDB-T system in realizing the process of generating the OFDM transmission wave, although the details of the information source coding and the transmission channel coding are different. Therefore, a part of the plurality of information source coding units 411 and the multiplexing / conditional reception processing unit 415 is configured for the ISDB-T terrestrial digital broadcasting service, and a part of the configuration is used for the advanced terrestrial digital broadcasting service. , And the transmission path encoding unit 416 may multiplex packet streams of a plurality of different terrestrial digital broadcasting services. When the multiplexing unit / conditional reception processing unit 415 is configured for an ISDB-T terrestrial digital broadcasting service, an MPEG-2TS which is a stream of Transport Stream Packet (TSP) defined by MPEG-2 Systems is used. Generate it. When the multiplexing unit / conditional reception processing unit 415 is configured for an 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. Generate it. Naturally, all of the plurality of information source coding units 411 and the multiplexing / conditional reception processing unit 415 are configured for advanced terrestrial digital broadcasting services, and all packet streams multiplexed by the transmission path coding unit 416 are advanced. It may be a packet stream for a terrestrial digital broadcasting service.

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

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

  Next, FIG. 4D (2) will be described. FIG. 4D (2) illustrates the configuration of the transmission path encoding unit 416 according to the present embodiment when generating an OFDM transmission wave of dual-use terrestrial digital broadcasting. The OFDM transmission wave transmitted by 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 / conditional reception processing unit 415 and subjected to the remultiplexing processing is added with the redundancy of error correction, byte interleave, bit interleave, time Various interleaving processes such as interleaving and frequency interleaving are performed. Thereafter, a process by IFFT is performed together with the pilot signal, the TMCC signal, and the AC signal, and after the guard interval adding process, the signal becomes an OFDM transmission wave through orthogonal modulation.

  In the configuration example of FIG. 4D (2), processes are separately performed for each layer such as A-layer, B-layer, and C-layer up to outer code processing, power spreading processing, byte interleaving, inner coding processing, mapping processing, and time interleaving. Configure as possible. However, in the configuration example of FIG. 4D (2), not only a horizontally polarized (H) OFDM transmission wave but also a vertically polarized (V) OFDM transmission wave is generated, and the processing flow is branched into two systems. I 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 whether the data is not branched to the vertical polarization (V) processing system is determined in FIG. According to the segment configuration described in 1) or (2), it can be different for each hierarchy.

  The processing of the outer code, the inner code, the mapping, and the like shown in the configuration of FIG. 4D (2) is performed in each processing of the configuration of FIG. 4D (1) in addition to the processing compatible with the configuration of FIG. 4D (1). More advanced processing not employed can be used. Specifically, in the part of the configuration of FIG. 4D (2) where the processing is performed for each layer, the current mobile reception service of the digital terrestrial broadcasting and the video having the maximum resolution of 1920 horizontal pixels × 1080 vertical pixels are displayed. At the layer where the current terrestrial digital broadcasting service to be transmitted is transmitted, processes such as outer code, inner code, mapping, etc., are performed that are compatible with the configuration of FIG. 4D (1). On the other hand, in the portion of FIG. 4D (2) where processing is performed for each layer, advanced terrestrial digital broadcasting capable of transmitting an image having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels. Regarding the layer for transmitting the service, the processing such as the outer code, the inner code, and the mapping may be configured to use more advanced processing that is not adopted in each processing of the configuration of FIG. 4D (1).

  In the dual-use 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 between the layers according to the TMCC information described later. It is desirable that the processing such as the outer code, the inner code, and the mapping to be performed can be switched according to the TMCC information.

  Note that, for a layer for transmitting an advanced terrestrial digital broadcasting service capable of transmitting a video having a maximum resolution of more than 1920 horizontal pixels × vertical 1080 pixels, byte interleaving, bit interleaving, and time interleaving are based on current terrestrial digital broadcasting. Processing compatible with the service may be performed, or more advanced different processing may be performed. Alternatively, some interleaving may be omitted for a layer that transmits advanced terrestrial digital broadcasting services.

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

  In the configuration of FIG. 4D (2) described above, the current mobile reception service of the terrestrial digital broadcast and the video having the maximum resolution of 1920 horizontal pixels × 1080 vertical pixels are transmitted until the OFDM transmission wave is generated from the input stream. In the layer where the current terrestrial digital broadcasting service is transmitted, a 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 reception device of the existing terrestrial digital broadcasting service. Also, in the case where the current terrestrial digital broadcasting mobile reception service or the current terrestrial digital broadcasting service for transmitting an image having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels is transmitted, the broadcasting of the terrestrial digital broadcasting service is performed. Signals can be correctly received and demodulated.

  Further, in the configuration shown in FIG. 4D (2), the number of pixels exceeding horizontal 1920 pixels × vertical 1080 pixels is set to the maximum resolution in a hierarchy using both segments of the horizontally polarized OFDM transmission wave and the vertically polarized OFDM transmission wave. It is possible to transmit an advanced terrestrial digital broadcast service capable of transmitting an image, and a broadcast signal of the advanced terrestrial digital 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 shown in FIG. 4D (2), the digital receiver capable of suitably receiving and demodulating digital broadcasting can be suitably used in a broadcasting receiver corresponding to an advanced terrestrial digital broadcasting service and an existing receiver for an existing terrestrial digital broadcasting service. Broadcast waves can be generated.

  Next, FIG. 4D (3) will be described. FIG. 4D (3) shows a configuration of the transmission path encoding unit 416 when generating an OFDM transmission wave of the hierarchical division multiplex terrestrial digital broadcast according to the present embodiment. In FIG. 4D (3) as well, the packet stream input from the multiplexing unit / conditional reception processing unit 415 and subjected to the remultiplexing processing has error correction redundancy, byte interleave, bit interleave, time Various interleaving processes such as interleaving and frequency interleaving are performed. Thereafter, a process by IFFT is performed together with a pilot signal, a TMCC signal, and an AC signal, and after a guard interval is added, the signal becomes an OFDM transmission wave through orthogonal modulation.

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

  The modulated wave transmitted in the lower layer of FIG. 4D (3) is, for example, an advanced terrestrial that can transmit an image having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels with all 13 segments as the A layer. It may be assigned to a digital broadcasting service. Alternatively, the current mobile reception service of the current terrestrial digital broadcasting is transmitted in the 1-segment A layer having the segment configuration of FIG. 4B (3), and the pixels exceeding horizontal 1920 pixels × vertical 1080 pixels in the 12-segment B layer. An advanced digital terrestrial broadcasting service capable of transmitting images having the maximum number of resolutions may be transmitted. In the latter case, as in FIG. 4D (2), the processing may be switched from the outer code processing to the time interleaving processing for each layer such as the A layer and the B layer. As described with reference to FIG. 4D (2), it is necessary to maintain processing compatible with the current terrestrial digital broadcasting in the layer for transmitting the mobile reception service of the current terrestrial digital broadcasting.

  In the configuration of FIG. 4D (3), an OFDM transmission wave that is a terrestrial digital broadcast wave obtained by multiplexing a modulation wave transmitted on the upper layer and a modulation wave transmitted on the lower layer is generated. Since the technology of separating the modulated wave transmitted on the upper layer from the OFDM transmission wave is also installed in the existing receiver of the existing terrestrial digital broadcasting service, the technology included in the modulated wave transmitted on the upper layer is The broadcast signal of the current digital terrestrial digital broadcasting service that transmits the mobile terminal receiving service of digital terrestrial digital broadcasting and the video having the maximum resolution of 1920 horizontal pixels × 1080 vertical pixels is correctly received by the existing receiving device of the current digital terrestrial broadcasting service. Received and demodulated. On the other hand, a broadcast signal of an advanced terrestrial digital broadcasting service capable of transmitting a video having a maximum resolution of more than 1920 horizontal pixels × 1080 vertical pixels contained in a modulated wave transmitted in the lower layer is a main signal. The broadcast receiving apparatus 100 according to the embodiment of the present invention can receive and demodulate.

  That is, in the configuration shown in FIG. 4D (3), the digital receiver capable of suitably receiving and demodulating digital broadcasting can be suitably used in a broadcasting receiver corresponding to an advanced digital terrestrial broadcasting service and an existing receiver of an existing terrestrial digital broadcasting service. Broadcast waves can be generated. Further, in the configuration of FIG. 4D (3), unlike the configuration of FIG. 4D (2), it is not necessary to use a plurality of polarizations, and it is possible to more easily generate a receivable OFDM transmission wave.

  In the OFDM transmission wave generation processing according to FIG. 4D (1), FIG. 4D (2), and FIG. 4D (3) of the present embodiment, the adaptability of the SFN to the distance between stations and the resistance to Doppler shift in mobile reception. In consideration of the above, three types of modes having different numbers of carriers are prepared. Note that another mode having a different number of carriers may be further prepared. In the mode with a large number of carriers, the effective symbol length becomes longer, and if the guard interval ratio (guard interval length / effective symbol length) is the same, the guard interval length becomes longer, making it possible to provide resistance to multipath with a long delay time difference. It is. On the other hand, in the mode in which the number of carriers is small, the carrier interval is widened, and it is possible to reduce the influence of inter-carrier interference due to Doppler shift that occurs in the case of 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 method is used for each layer configured by one or a plurality of OFDM segments. Parameters such as the coding rate of the code and the time interleave length can be set. FIG. 4E illustrates an example of a transmission parameter for each segment of the OFDM segment identified by the mode of the system according to the present embodiment. It should be noted that the carrier modulation method in the figure indicates the modulation method of the “data” carrier. The SP signal, the CP signal, the TMCC signal, and the AC signal adopt a modulation method different from the modulation method of the “data” carrier. Since these signals are signals whose noise resistance is more important than the amount of information, a constellation of small values (BPSK or A modulation scheme that performs mapping to DBPSK (that is, two states) is adopted to increase resistance to noise.

  In addition, the numerical value of the number of carriers is a value in the case where QPSK, 16QAM, 64QAM, or the like is set as the carrier modulation method, and the numerical value in the right side of the diagonal line is a value when DQPSK is set as the carrier modulation method. Value. In the figure, the underlined parameters are incompatible with the current mobile reception service for digital terrestrial broadcasting. Specifically, the "data" carrier modulation method of 256 QAM, 1024 QAM or 4096 QAM has not been adopted in the current terrestrial digital broadcasting service. Therefore, in the processing of the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) in the hierarchy that requires compatibility with the current terrestrial digital broadcasting service, The "data" carrier modulation method of 256 QAM, 1024 QAM or 4096 QAM is not used. For "data" carriers transmitted in a hierarchy corresponding to advanced terrestrial digital broadcasting services, QPSK (4 states), 16QAM (16 states), 64QAM (16 states) compatible with current terrestrial digital broadcasting services In addition to a modulation scheme such as Equation 64, a multi-level modulation scheme such as 256 QAM (256 states), 1024 QAM (1024 states) or 4096 QAM (4096 states) may be applied. Further, a modulation scheme different from these modulation schemes may be adopted.

  The modulation scheme of the pilot symbol (SP or CP) carrier may be BPSK (2 states) compatible with the current terrestrial digital broadcasting service. The modulation method of the AC carrier and the TMCC carrier may use DBPSK (2 states) compatible with the current terrestrial digital broadcasting service.

  As a method of inner code processing, LDPC codes have not been adopted in current terrestrial digital broadcasting services. Therefore, in the processing of the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) in the hierarchy that requires compatibility with the current terrestrial digital broadcasting service, No LDPC code is 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. As an outer code processing method, a BCH code has not been adopted in the current terrestrial digital broadcasting service. Therefore, in the processing of the OFDM broadcast wave generation processing according to FIGS. 4D (1), 4D (2), and 4D (3) in the hierarchy that requires compatibility with the current terrestrial digital broadcasting service, No BCH code is used. A BCH code may be applied as an outer code to data transmitted in a layer corresponding to advanced digital terrestrial broadcasting services.

  FIG. 4F shows transmission signal parameters of one physical channel (6 MHz bandwidth) in the OFDM broadcast wave generation process according to FIGS. 4D (1), 4D (2), and 4D (3) of the present 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 the sake of compatibility with the current terrestrial digital broadcast service, In principle, parameters compatible with the current terrestrial digital 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. 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 pilot signals (SP, CP, AC1, AC2) serving as a reference for demodulation, and the like. There is a carrier to 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 for each segment is used. Also, a concatenated code is adopted for error correction, a shortened Reed-Solomon (204,188) code is used for the outer code, a constraint length is 7 for the inner code, and a punctured character with a coding rate of 1/2 as the mother code. Use convolutional codes. Different coding may be used for both the outer code and the inner code. The information rate differs 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 one frame includes an integer number of TSPs. Switching of transmission parameters is performed at the boundary of this frame.

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

  AC1 and AC2 carry information on the CP, and are used for transmitting information for a broadcaster in addition to the role of a pilot signal. It may be used for transmitting other information.

  The arrangement images shown in FIGS. 4G and 4H are examples in the case of mode 3 respectively, and the carrier numbers are 0 to 431. In the case of mode 1 and mode 2, respectively, the carrier numbers are 0 to 107 or 0. It becomes 215 from. Also, the carrier for transmitting AC1, AC2, and TMCC may be predetermined for each segment. Note that carriers for transmitting AC1, AC2, and TMCC are randomly arranged in the frequency direction in order to reduce the influence of periodic dips in 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 the transmission parameters of the OFDM segment. The TMCC signal is transmitted on a TMCC transmission carrier specified 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 a TMCC symbol and has a predetermined amplitude and phase reference. B1 to B16 are synchronizing signals, which 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 for segment type identification, and identify whether each segment is a differential modulator or a synchronous modulator. B20 to B121 describe TMCC information. 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 alarm broadcast activation flag), current information, next information, frequency conversion processing identification, It may be configured to include information for assisting the demodulation and decoding operations of the receiver, such as physical channel number identification, main signal identification, 4K signal transmission layer identification, additional layer transmission identification, and the like. The current information indicates the current hierarchical configuration and transmission parameters, and the next information indicates the switched hierarchical configuration and transmission parameters. Switching of transmission parameters is performed in frame units. FIG. 5B shows an example of bit assignment of TMCC information. FIG. 5C shows an example of the configuration of transmission parameter information included in current information / next information. Note that 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) or the like having a common transmission method, and a detailed description thereof is omitted here.

  FIG. 5D shows an example of bit allocation 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 having a common transmission method, “01” is set. In the case of the advanced terrestrial digital television broadcasting system such as the dual-use terrestrial digital broadcasting or the hierarchical division multiplex terrestrial digital broadcasting according to the present embodiment, “10” is set. In the advanced digital terrestrial television broadcasting system, a 2K broadcast program (a broadcast program of 1920 horizontal pixels × 1080 vertical pixels of video, a broadcast of It is possible to simultaneously transmit a 4K broadcast program (a broadcast program of a video exceeding 1920 horizontal pixels × vertical 1080 pixels) within the same service.

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

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

  The partial reception flag for each of the current information / next information is set to “1” when the segment at the center of the transmission band is set to the 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 a 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 scheme is DQPSK. “001” indicates that the modulation scheme is QPSK. “010” indicates that the modulation scheme is 16QAM. “011” indicates that the modulation scheme is 64QAM. "100" indicates that the modulation scheme is 256QAM. “101” indicates that the modulation scheme is 1024 QAM. “110” indicates that the modulation scheme is 4096 QAM. If there is no unused hierarchy or next information, “111” is set in this parameter.

  For the setting of the coding rate, the length of the time interleave, 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 by a 4-bit numerical value. If there is no unused hierarchy or next information, “1111” is set. Note that the setting of the mode, guard interval ratio, and the like is independently detected on the receiver side, so that transmission using TMCC information need not be performed.

  FIG. 5F shows an example of bit assignment for frequency conversion processing identification. In the frequency conversion process identification, a frequency conversion process (in the case of the dual-polarization transmission system) and a frequency conversion amplification process (in the case of the hierarchical division multiplex transmission system) described below are performed in the conversion unit 201T and the conversion unit 201L in FIG. 2A. In this case, "0" is set. If the frequency conversion process or the frequency conversion amplification process is not performed, “1” is set. For example, this parameter is set to “1” when transmitted from a broadcasting station, and when the conversion unit 201T or the conversion unit 201L performs the frequency conversion process or the frequency conversion amplification process, the conversion unit 201T or the conversion unit 201L. May be configured to be rewritten to “0”. With this configuration, when the frequency conversion processing identification bit is “0” when received by the second tuner / demodulator 130T or the third tuner / demodulator 130L of the broadcast receiving apparatus 100, the OFDM It is possible to identify that the frequency conversion processing or the like has been performed after the transmission wave was transmitted from the broadcasting station.

  In the dual-use terrestrial digital broadcasting according to the present embodiment, the setting and rewriting of the frequency conversion processing identification bit may be performed for each of the plurality of polarizations. For example, if both of a plurality of polarizations are not frequency-converted by the converter 201T of FIG. 2A, the frequency conversion processing identification bits included in both OFDM transmission waves may be set to “1”. If only one of a plurality of polarizations is frequency-converted by the conversion unit 201T, the frequency conversion processing identification bit included in the frequency-converted polarization OFDM transmission wave is converted to “0” by the conversion unit 201T. ] Can be rewritten. If both of the plurality of polarizations are frequency-converted by the converter 201T, the frequency conversion processing identification bits included in the frequency-converted OFDM transmission waves of both polarizations are converted to “0” in the converter 201T. Just rewrite. By doing so, the broadcast receiving apparatus 100 can identify the presence or absence of frequency conversion for each polarization among the plurality of polarizations.

  Since the frequency conversion process identification bit is not defined in the current digital terrestrial broadcasting, it is ignored in the digital terrestrial broadcasting receiver already used by the user. However, the bit may be introduced to a new terrestrial digital broadcasting service that transmits an image having a maximum resolution of 1920 horizontal pixels × 1080 vertical pixels, which is an improvement of 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 be configured as a first tuner / demodulator corresponding to the new terrestrial digital broadcast service.

  Note that, as a modified example, on the assumption that the conversion unit 201T and the conversion unit 201L in FIG. 2A perform the frequency conversion process and the frequency conversion amplification process on the OFDM transmission wave, It may be set to “0” in advance. If the received broadcast wave is not an advanced digital terrestrial broadcasting 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 broadcasting service, this parameter is set to “111111”. The bit of the physical channel number identification is not defined in the current terrestrial digital broadcasting, and the receiving device of the current terrestrial digital broadcasting obtains the physical channel number of the broadcast wave specified by the broadcasting station from the TMCC signal, the AC signal, and the like. I couldn't. The broadcast receiving apparatus 100 according to the embodiment of the present invention uses the bits of the physical channel number identification of the received OFDM transmission wave to demodulate the carrier other than the TMCC signal and the AC signal without demodulating the carrier. The physical channel number set by the broadcasting station can be ascertained. The physical channels of 13ch to 52ch have a bandwidth of 6 MHz per channel and are allocated in advance to a frequency band of 470 to 710 MHz. Therefore, the fact that the broadcast receiving apparatus 100 can grasp the physical channel number of the OFDM transmission wave based on the bit of the physical channel number identification means that the frequency band in which the OFDM transmission wave was transmitted in the air as the terrestrial digital broadcast wave is grasped. It means what you can do.

  In the dual-use terrestrial digital broadcasting according to the present embodiment, in the generation process of the OFDM transmission wave on the broadcast 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. What is necessary is just to arrange an identification bit and give the same physical number. Here, depending on the installation environment of the broadcast receiving device 100, the conversion unit 201T of FIG. 2A may convert only one frequency of a plurality of polarizations. With this, when the respective frequencies of the plurality of polarization pairs at the time of reception by the broadcast receiving device 100 are different from each other, it is determined that the plurality of polarizations having different frequencies are originally a pair. Unless it can be grasped in any way, it becomes impossible for the broadcast receiving apparatus to demodulate advanced terrestrial digital broadcasting using both polarizations of the dual-use terrestrial digital broadcasting. Even in such a case, if the above-mentioned physical channel number identification bit is used and the transmission wave having the same value of the physical channel number identification bit in the broadcast receiving apparatus 100 exists at a plurality of different frequencies, the broadcast station originally has It can be identified as a transmission wave that was transmitted as a polarization pair that constituted one physical channel. This makes it possible to realize advanced demodulation of terrestrial digital broadcasting of the dual-purpose terrestrial digital broadcasting using the plurality of transmission waves having the same value.

  FIG. 5H shows an example of bit assignment for main signal identification. This example is an example in which the main signal identification bit is arranged in bit B117.

  If the OFDM transmission wave to be transmitted is a transmission wave of dual-use terrestrial digital broadcasting, this parameter is set to “1” in the TMCC information of the transmission wave transmitted with the main polarization. Set to “0” in the TMCC information of the transmission wave transmitted with the secondary polarization. In addition, the transmission wave transmitted with the main polarization is the same polarization direction as the polarization direction used for transmission of the current terrestrial digital broadcasting service, of the vertical polarization signal and the horizontal polarization signal. Refers to the polarization signal. That is, in an area where the current terrestrial digital broadcasting service adopts horizontal polarization transmission, in the dual-use terrestrial digital broadcasting service, horizontal polarization is the main polarization and vertical polarization is the secondary polarization. It becomes a wave. In addition, in areas where the current terrestrial digital broadcasting service uses vertical polarization, vertical polarization is the main polarization in the dual-use terrestrial digital broadcasting service, and horizontal polarization is the secondary polarization. It becomes.

  In the broadcast receiving apparatus 100 receiving the transmission wave of the dual-use terrestrial digital broadcasting according to the embodiment of the present invention, the transmission wave being received is transmitted with the main polarization at the time of transmission by using the bit of the main signal identification. It can be determined whether the transmission has been carried out or has been transmitted with a secondary polarization. For example, if the main polarization and the secondary polarization identification processing is used, at the time of an initial scan described later, the transmission wave transmitted with the main polarization is first subjected to the initial scan, and transmitted with the main polarization. After the end of the initial scan of the transmission wave, processing such as performing an initial scan of the transmission wave transmitted with the secondary polarization becomes possible.

Details of the configuration example of the digital broadcasting service to be transmitted with the layer and segment of the dual-use terrestrial digital broadcasting according to the present embodiment will be described later. When transmitting digital broadcasting services and transmitting advanced terrestrial digital services in a hierarchy that includes segments included in both the primary polarization and the secondary polarization, an initial scan of the transmission wave transmitted in the primary polarization first To complete the initial scan of the current terrestrial digital broadcasting service, and then perform the initial scan of the advanced terrestrial digital broadcasting service by performing the initial scan of the transmission wave transmitted with the secondary polarization Is also good. In this way, the initial scan of the advanced terrestrial digital broadcasting service can be performed after the completion of the initial scan of the current terrestrial digital broadcasting service. This can be reflected in the setting by the initial scan of the broadcasting service, which is preferable.
The definition of the meaning of the bits “1” and “0” of the main signal identification may be reversed from the above description.

  Further, instead of the main signal identification bit, a polarization direction identification bit may be used as one parameter of the TMCC information. Specifically, the transmission direction transmitted by the horizontally polarized wave has the polarization direction identification bit set to “1” on the broadcast station side, and the transmission wave transmitted by the vertical polarization has the polarization direction identification bit set on the broadcast station side. It may be set to “0”. In the broadcast receiving apparatus 100 that has received the transmission wave of the dual-use terrestrial digital broadcast according to the embodiment of the present invention, by using the polarization direction identification bit, the transmission wave being received can be transmitted in any polarization direction during transmission. Can be identified. For example, if the polarization direction identification process is used, during an initial scan described later, an initial scan is performed on a transmission wave transmitted with a horizontal polarization first, and an initial scan of a transmission wave transmitted with a horizontal polarization is performed. After the completion of the above, processing such as performing an initial scan of the transmission wave transmitted by the vertically polarized wave can be performed. The explanation of the effect of the processing is as follows. Since it should be replaced, the description will not be repeated.

  The definition of the meaning of the polarization direction identification bits “1” and “0” may be reversed from the above description.

  Further, the first signal / second signal identification bit may be used as one parameter of the TMCC information instead of the main signal identification bit described above. Specifically, one of the horizontal polarization and the vertical polarization is defined as a first polarization, a broadcast signal of a transmission wave transmitted by the first polarization is defined as a first signal, The station may set the first signal / second signal identification bit to "1". Further, the other polarization is defined as a second polarization, a broadcast signal of a transmission wave transmitted by the second polarization is defined as a second signal, and a first signal and a second signal identification bit are defined by a broadcasting station. It may be set to “0”. In the broadcast receiving apparatus 100 that has received the transmission wave of the dual-use terrestrial digital broadcast according to the embodiment of the present invention, by using the first signal and the second signal identification bit, the transmission wave being received can be any of It is possible to identify whether the signal was transmitted in the polarization direction. Note that the first signal / second signal identification bit uses the concepts of “primary polarization” and “secondary polarization” as “first polarization” and “second polarization” based on the definition of the main signal identification bit described above. The processing and effect of the broadcast receiving apparatus 100 are only replaced with “polarization”. Since “wave” and “secondary polarized wave” may be replaced with “second polarized wave”, the description will not be repeated.

  Note that the definition of the meaning of “1” and “0” of the first signal / second signal identification bit may be reversed from the above description.

  Next, in the transmission wave of the hierarchical division multiplex terrestrial digital broadcast 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 above-mentioned main signal identification bits. Specifically, in the TMCC information of the modulated wave transmitted in the upper layer, the above-mentioned upper and lower layer identification bits are 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 bits are set. May be set to “0”. If the received broadcast wave is not an advanced terrestrial digital broadcasting service, this parameter may be set to “1”.

  In the hierarchical division multiplexed terrestrial digital broadcasting according to the present embodiment, 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 broadcast station side are used here. The lower layer of the waves may be subjected to frequency conversion and signal amplification by the converter 201L in FIG. 2A depending on the installation environment of the broadcast receiving device 100. In the broadcast receiving apparatus 100, when receiving the transmission wave of the hierarchical division multiplex terrestrial digital broadcasting, based on the above-mentioned upper and lower layer identification bits, whether the modulation wave was originally transmitted in the upper layer, It is possible to identify whether or not the modulated wave has been transmitted by the above. For example, the identification process allows the initial scan of the advanced terrestrial digital broadcast service transmitted on the lower layer to be performed after the initial scan of the current terrestrial digital broadcast service transmitted on the upper layer is completed. The setting by the initial scan of the digital broadcasting service can be reflected in the setting by the initial scan of the advanced terrestrial digital broadcasting service. Further, in the third tuner / demodulation unit 130L of the broadcast receiving apparatus 100, it can be used for switching between the processes of the demodulation units 133S and 133L based on the identification result.

In the following description of the dual-polarization transmission system in each embodiment, unless otherwise specified, an example in which horizontal polarization is the main polarization and vertical polarization is the secondary polarization will be described as an example. However, the relationship between the main polarization and the vertical polarization may be reversed.
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-use terrestrial digital broadcasting service according to the present embodiment, the bits of the 4K signal transmission layer identification are the horizontal polarization signal and the vertical polarization signal for the B layer and the C layer, respectively. It is sufficient to indicate whether or not to transmit a 4K broadcast program using both signals. One bit is assigned to each of the setting of the B layer and the setting of the C layer. For example, in the B layer and the C layer, when the bit of the 4K signal transmission layer identification for each layer is “0”, the 4K broadcast program using both the horizontal polarization signal and the vertical polarization signal in the layer is used. It is sufficient to indicate that the transmission is performed. When the 4K signal transmission layer identification bit of each layer in the B layer and the C layer is “1”, transmission of a 4K broadcast program using both the horizontal polarization signal and the vertical polarization signal in the layer is performed. You just need to show that there is no. By doing so, in the broadcast receiving apparatus 100, the 4K signal transmission layer identification bits are used, and in the B layer and the C layer, the 4K signal is transmitted using both the horizontal polarization signal and the vertical polarization signal in each layer. Whether or not to transmit a broadcast program can be identified.

  Also, when the broadcast wave to be transmitted is the broadcast wave of the hierarchical division multiplex terrestrial digital broadcasting service of the present embodiment, the bit of the 4K signal transmission layer identification indicates whether or not to transmit the 4K broadcast program in the lower layer. Should be indicated. When B119 of this parameter is “0”, a 4K broadcast program is transmitted in the lower layer. When B119 of this parameter is "1", transmission of a 4K broadcast program is not performed in the lower hierarchy. By doing so, in the broadcast receiving apparatus 100, it is possible to identify whether or not to transmit a 4K broadcast program in the lower hierarchy, using the 4K signal transmission hierarchy identification bit.

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

  When the broadcast wave to be transmitted is not an advanced terrestrial digital broadcasting service, this parameter may be set to “1”.

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

  FIG. 5J shows an example of bit assignment for additional layer transmission identification. The bit of the additional layer transmission identification indicates that the broadcast wave to be transmitted is the polarization terrestrial digital broadcasting service of the present embodiment, What is necessary is just to show whether it is used as the D layer or the virtual E layer.

  For example, in the example of the figure, the bit allocated to B120 is a D-layer transmission identification bit, and when this parameter is “0”, the B-layer transmitted with the secondary polarization is used as the virtual D-layer. In other words, if expressed accurately, a segment group having the same segment number as a segment belonging to layer B transmitted in the main polarization among segments transmitted in the sub polarization is transmitted in the main polarization. That is, it is handled as a D layer which is a different layer from the B layer. When this parameter is “1”, the B layer transmitted by the secondary polarization is not used as the virtual D layer but is used as the B layer.

  Further, for example, the bit allocated to B121 is an E layer transmission identification bit, and when this parameter is “0”, the C layer transmitted with the secondary polarization is used as the virtual E layer. In other words, if expressed accurately, a segment group having the same segment number as a segment belonging to layer C transmitted by the main polarization among segments transmitted by the sub polarization is transmitted by the main polarization. That is, it is handled as an E layer which is a different layer from the C layer. When this parameter is “1”, the C layer transmitted by the secondary polarization is not used as the virtual E layer but is used as the C layer.

  In this way, the broadcast receiving apparatus 100 uses the additional layer transmission identification bits (D layer transmission identification bits and / or E layer transmission identification bits) to transmit the D layer and the E layer transmitted with the secondary 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. A new hierarchy (D hierarchy and E hierarchy in the example of FIG. 5J) can be operated beyond the number.

  When this parameter is “0”, the parameters such as the carrier modulation mapping scheme, coding rate, and time interleave length shown in FIG. 5C are changed between the virtual D layer / virtual E layer and the B layer / C layer. It is possible to make it different. In this case, if current / next information of parameters such as a carrier modulation mapping scheme, a convolutional coding rate, and a time interleave length for 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 scheme, a convolutional coding rate, and a time interleave length for the virtual D layer / virtual E layer.

  As a modified example, 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 secondary polarization is used. The transmission parameter of the B layer and / or the C layer of the information may be switched to the meaning of the transmission parameter 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 are used, the main polarization uses the A layer, the B layer, and the C layer, and the transmission parameters of these layers are the TMCC transmitted by the main polarization. What is necessary is just to transmit by the current information / next information of information. In addition, the secondary polarization uses the A layer, the D layer, and the E layer, and the transmission parameters of these layers may be transmitted by the current information / next information of the TMCC information transmitted by the secondary polarization. Even in this case, the broadcast receiving apparatus 100 can grasp the parameters such as the carrier modulation mapping scheme, the convolutional coding rate, and the time interleave length for the virtual D layer / virtual E layer.

  If the broadcast wave to be transmitted is not an advanced terrestrial digital broadcast service, or if the advanced terrestrial digital broadcast service is a hierarchical division multiplex transmission system, this parameter is set to “1”. Is also good.

  Note that the parameter of the additional layer transmission identification may be stored in both the TMCC information of the primary polarization and the TMCC information of the secondary polarization. Can be realized.

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

  When the parameter of the 4K signal transmission layer identification indicates that the 4K broadcast program is transmitted in the B layer, the D layer transmission identification bit indicates that the B layer is used as the virtual D layer. Alternatively, the broadcast receiving apparatus 100 may ignore the D-layer transmission identification bit. Similarly, if the parameter of the 4K signal transmission layer identification indicates that the 4K broadcast program is to be transmitted in the C layer, even if the E layer transmission identification bit indicates that the C layer is used as the virtual E layer, The broadcast receiving apparatus 100 may be configured to ignore the E-layer transmission identification bit. If the priorities of the bits used in the determination process are clearly defined in this way, a conflict in the determination process in the broadcast receiving device 100 can be prevented.

  In a broadcast wave to be transmitted, the above-mentioned bits for frequency conversion processing identification, bits for physical channel number identification, bits for main signal identification, bits for 4K signal transmission identification, bits for additional layer transmission identification, etc. Is not "10", all bits may be set to "1" in principle. Although the system identification parameter is not “10”, exceptionally due to some problem, bits for frequency conversion processing identification, bits for physical channel number identification, bits for main signal identification, bits for 4K signal transmission identification, and bits for additional layer transmission identification are added. Even when the bits are not “1”, the broadcast receiving apparatus 100 may be configured to ignore the non- “1” bits and determine that all these bits are “1”. .

  Further, in the advanced terrestrial digital broadcasting service of the dual-polarization transmission system, the TMCC information of the transmission wave transmitted by the horizontal polarization and the TMCC information of the transmission wave transmitted by the vertical polarization may be the same. And may be different. Similarly, in the advanced terrestrial digital broadcasting service of the hierarchical division multiplex transmission system, 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. And may be different. In addition, the above-described parameters for frequency conversion processing identification, parameters for main signal identification, additional layer transmission identification, and the like are described only in the TMCC information of the transmission wave transmitted in the secondary polarization and the transmission wave transmitted in the lower layer. May be.

  In the above description, the frequency conversion processing identification parameter, the main signal identification parameter, the polarization direction identification parameter, the first signal / second signal identification parameter, the upper / lower layer identification parameter, and the 4K signal transmission layer identification parameter The example in which the parameter of the additional layer transmission identification is transmitted by being included in the TMCC signal (TMCC carrier) has been described. 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, or the like) modulated by a modulation scheme that performs mapping with fewer states than the data carrier modulation scheme.

[AC signal]
The AC signal is an additional information signal relating to broadcasting, such as additional information relating to transmission control of a modulated wave or earthquake motion warning information. The seismic-motion warning information is transmitted using the segment 0 AC carrier. On the other hand, additional information relating to modulation wave transmission control 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. B <b> 4 to B <b> 203 are used for transmitting additional information relating to transmission control of modulated waves or transmitting earthquake alarm information.

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

  B4 to B203 of the AC signal are used for transmitting additional information relating to transmission control of a modulated wave or transmitting earthquake alarm information.

  The transmission of the additional information related to the modulation wave transmission control may be performed using 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 replaced with the TMCC signal or in addition to the TMCC signal. Bits may be assigned to additional information relating to transmission control of a modulated wave of a signal and transmitted. By doing so, the broadcast receiving apparatus 100 can perform the various kinds of identification processing already described in the description of the TMCC signal using these parameters. Further, transmission parameter additional information regarding the transmission layer of the 4K broadcast program when any parameter of the 4K signal transmission layer identification is “0”, and virtual D when any parameter of the additional layer transmission identification is “0”. Current / next information of the transmission parameter related to the layer / virtual E layer may be allocated. By doing so, in the broadcast receiving apparatus 100, the transmission parameters of each layer can be acquired using these parameters, and the demodulation processing of each layer can be controlled.

  The transmission of the seismic-motion warning information may be performed by the bit assignment shown in FIG. 6C. The seismic-motion warning information includes a synchronization signal, a start / end flag, an update flag, signal identification, detailed seismic-motion warning 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 the seismic-motion warning information is transmitted, the 16-bit code obtained by 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 flag of the start timing / end timing of the earthquake motion warning information. The start / end flag is changed from “11” to “00” at the start of the transmission of the seismic-motion warning information, and is changed from “00” to “11” at the end of the transmission of the seismic-motion warning information. The update flag is composed of a two-bit code. Whenever the content of the series of detailed earthquake motion warning information transmitted when the start / end flag is “00” changes, “00” is set to “1” as an initial value. ] Is incremented by one. After “11”, it returns to “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 earthquake motion warning detailed information. When this parameter is “000”, it means “earthquake motion warning detailed information (there is a corresponding area)”. When this parameter is “001”, it means “earthquake motion warning detailed information (no applicable area)”. When this parameter is “010”, it means “test signal of earthquake motion warning detailed information (there is a corresponding area)”. When this parameter is “011”, it means “test signal of detailed information on earthquake motion warning (no applicable 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” or “001” or “010” or “011”. When the start / end flag is “11”, the signal identification is “111”.

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

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

  The broadcast receiving apparatus 100 can perform various controls for coping with an emergency 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 about the seismic alarm, control for switching the display contents with a low priority to the display for the seismic alarm, control for ending the display of the application and switching to the display for the seismic alarm or the broadcast program image. is there.

  FIG. 6G shows an example of bit allocation of additional information related to modulation wave transmission control. The additional information on the transmission control of the modulated wave 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 regarding the transmission control of the modulated wave is transmitted, a 16-bit code combining the configuration identification and the synchronization signal is a 16-bit synchronization word conforming to the TMCC synchronization signal. It becomes. The current information indicates transmission parameter additional information when transmitting a 4K broadcast program in the B layer or the C layer, and current information of transmission parameters related to the virtual D layer or the virtual E layer. The next information indicates transmission parameter additional information when transmitting a 4K broadcast program in the B or 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 the current information are the current information of the layer B transmission parameter additional information, and indicate the current information of the transmission parameter additional information when transmitting the 4K broadcast program in the layer B. is there. Also, B31 to B43 of the current information are the current information of the transmission parameter additional information of the C layer, and indicate the current information of the transmission parameter additional information when transmitting the 4K broadcast program on the C layer. Further, B70 to B82 of the next information are information after switching the transmission parameter of the layer B transmission parameter additional information, and after switching the transmission parameter of the transmission parameter additional information when transmitting the 4K broadcast program in the layer B. Indicates information. Also, B83 to B95 of the next information are information after switching of the transmission parameter of the C layer transmission parameter additional information, and information after switching of the transmission parameter of the transmission parameter additional information when transmitting the 4K broadcast program in the C layer. It is shown. Here, the transmission parameter additional information is a transmission parameter related to modulation that extends the specification in addition to the transmission parameter of the TMCC information shown in FIG. 5C. The specific contents of the transmission parameter additional information will be described later.

  In the example of FIG. 6G, B44 to B56 of the current information are the current information of the transmission parameters for the virtual D layer when operating the virtual D layer. Current information B57 to B69 are current information of transmission parameters for the virtual E layer when operating the virtual E layer. Also, B96 to B108 of the next information are information after switching the transmission parameters for the virtual D layer when operating the virtual D layer. Current information B109 to B121 are information after switching the transmission parameters for the virtual E layer when operating the virtual E layer. 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 layer and the virtual E layer are layers that do not exist in the current digital terrestrial broadcasting. It is not easy to increase the number of bits in the TMCC information of FIG. 5B because it is necessary to maintain compatibility with the current terrestrial digital broadcasting. 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 on modulation for the new virtual D layer and virtual E layer to the receiving device while maintaining the compatibility of the TMCC information with the current terrestrial digital broadcasting. Thereby, when the B layer / C layer of the transmission wave transmitted by the secondary polarization, which is the broadcast wave of the dual-use terrestrial digital broadcasting service according to the present embodiment, is used as the virtual D layer / virtual E layer. In addition, it is possible to set the transmission parameters of the virtual D layer / virtual E layer of the transmission wave transmitted by the secondary polarization different from the transmission parameters of the B layer / C layer of the transmission wave transmitted by the main polarization. It becomes possible.

  When the virtual D layer or the virtual E layer is not used, the information of the transmission parameter for the unused layer can be ignored in the broadcast receiving apparatus 100 without any problem. For example, for the virtual D layer or the virtual E layer, when the parameter of the additional layer transmission identification of the TMCC information in FIG. 5J indicates “1” (indicating that the virtual D layer / virtual E layer is not used), the broadcast receiving apparatus 100 may be configured to ignore any value included in the transmission parameter shown in FIG. 6G for the unused virtual D layer or virtual E layer.

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

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

  The error correction method is used to set a coding method to be used as an error correction method for an inner code and an outer code when transmitting a 4K broadcast program (advanced terrestrial digital broadcasting service) on the B layer or the C layer. Is shown. FIG. 6I shows an example of bit assignment 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”, when transmitting a 4K broadcast program on the B and C layers, an LDPC code is used as an inner code and a BCH code is used as an outer code. Further, other combinations may be set and selected.

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

[Transmission system 1 for advanced terrestrial digital broadcasting service]
In order to realize 4K (3840 horizontal pixels × 2160 vertical pixels) broadcasting while maintaining the viewing environment of the current terrestrial digital broadcasting service, an example of a transmission system of the advanced terrestrial digital broadcasting service according to the embodiment of the present invention will be described. A 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 an approximately 6 MHz band corresponding to one physical channel are divided, and 7 segments are used for transmitting 2K (horizontal 1920 pixels × vertical 1080 pixels) broadcast programs, and 5 segments are used for transmitting 4K broadcast programs. , One segment is allocated for mobile reception (so-called one-segment broadcasting). Further, for the 5 segments for 4K broadcasting, a transmission capacity for a total of 10 segments is secured by a MIMO (Multiple-Input Multiple-Output) technique using not only a horizontally polarized signal but also a vertically polarized signal. In addition, 2K broadcast programs maintain image quality by optimizing the latest MPEG-2 Video compression technology, etc., and can be received by current TV receivers. For 4K broadcast programs, HEVC compression is more efficient than MPEG-2 Video. Image quality is ensured by optimizing technology and increasing the modulation level. Note that the number of segments to be allocated for each broadcast may be different from that described above.

  FIG. 7A shows an example of a dual-polarization transmission system in an advanced digital terrestrial broadcasting service according to an embodiment of the present invention. A frequency band of 470 to 710 MHz is used for transmitting broadcast waves of the terrestrial digital broadcasting service. The number of physical channels in the frequency band is 40 channels from 13 to 52 channels, 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 (1) and (2) of the 13-segment allocation example. In the example of (1), transmission of a 2K broadcast program is performed using segments 1 to 7 (layer B) of the horizontally polarized signal. A 4K broadcast program is transmitted using a total of 10 segments of the horizontally polarized signal segments 8 to 12 (layer C) and the vertically polarized signal segments 8 to 12 (layer C). The vertically polarized signal segments 1 to 7 (layer B) may be used to transmit the same broadcast program as the 2K broadcast program transmitted in the horizontally polarized signal segments 1 to 7 (layer B). Alternatively, it may be used for transmission of a broadcast program different from a 2K broadcast program transmitted in segments 1 to 7 (layer B) of a horizontally polarized signal in segments 1 to 7 (layer B) of a vertically polarized signal. Alternatively, in the vertically polarized signal segments 1 to 7 (layer B), it may be used for other data transmission or may not be used. The identification information on how to use the vertically polarized signal segments 1 to 7 (layer B) is determined on the receiving apparatus side by the parameter of the 4K signal transmission layer identification of the TMCC signal and the parameter of the additional layer transmission identification described above. Can be transmitted. The broadcast receiving apparatus 100 can identify the handling of the vertically polarized signal segments 1 to 7 (layer B) based on 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 and vertical polarized signals transmit a broadcast program having the same contents at different resolutions. Simultaneous broadcast may be used, or broadcast programs having different contents may be transmitted. Segment 0 of both the horizontal and vertical polarized signals transmits the same one-segment broadcast program.

  The example of (2) in FIG. 7A is another modification example different from (1). In the example of (2), a 4K broadcast program is transmitted using a total of 10 segments of segments 1 to 5 (layer B) of the horizontally polarized signal and segments 1 to 5 (layer B) of the vertically polarized signal. The 2K broadcast program is transmitted using the horizontally polarized signal segments 6 to 12 (C layer). Also in the example of (2), the vertically polarized signal segments 6 to 12 (layer C) are used for transmitting the same broadcast program as the 2K broadcast program transmitted in the horizontally polarized signal segments 6 to 12 (layer C). May be. The vertically polarized signal segments 6 to 12 (layer C) may be used for transmission of a broadcast program different from the 2K broadcast program transmitted in the horizontally polarized signal segments 6 to 12 (layer C). The segments 6 to 12 (C layer) of the vertically polarized signal may be used for other data transmission or may not be used. These pieces of identification information are also the same as in the example of (1), and thus the description thereof is omitted.

  Note that, in each of the examples (1) and (2) of FIG. 7A, an example in which the horizontal polarization is the main polarization has been described, but depending on the operation, the horizontal polarization and the vertical polarization may be reversed. I do not care.

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

  The horizontally polarized signal transmitted from the radio tower 300T is received by the horizontally polarized wave receiving element of the antenna 200T, which is a dual-polarized receiving antenna, and transmitted from the connector unit 100F1 to the channel selection / detection unit 131H via the coaxial cable 202T1. Is entered. 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 tuning / detection unit 131V via the coaxial cable 202T2. In general, an F-type connector is used for a connector for connecting an antenna (coaxial cable) and a television receiver.

  Here, there is a possibility that the user erroneously connects the coaxial cable 202T1 to the connector unit 100F2 and connects the coaxial cable 202T2 to the connector unit 100F1. In this case, in the channel selection / detection unit 131H and the channel selection / detection unit 131V, there may be a problem that it is not possible to identify whether the input broadcast signal is a horizontal polarization signal or a vertical polarization signal. In order to prevent the above-described problem, one of the connector sections for connecting the antenna (coaxial cable) and the television receiver, for example, the coaxial cable 202T2 for transmitting a vertically polarized signal and the connector section of the connector section 100F2 are connected to a horizontally polarized wave. It is conceivable that the coaxial cable 202T1 for transmitting a signal and the connector part of the connector part of the connector part 100F1 have a different shape from the F-type connector. Alternatively, the channel selection / detection unit 131H and the channel selection / detection unit 131V each 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. May be controlled so as to identify and operate.

  FIG. 7C shows an example of a different configuration example of the configuration of the broadcasting system of the advanced terrestrial digital broadcasting service using the dual-polarization transmission system according to the embodiment of the present invention. As shown in FIG. 7B, the configuration in which the broadcast receiving apparatus 100 includes two broadcast signal input connector sections and uses two coaxial cables to connect the antenna 200 </ b> T and the broadcast receiving apparatus 100 requires equipment cost and cost. It may not always be suitable for handling during cable wiring. Therefore, in the configuration shown in FIG. 7C, the horizontal polarization signal received by the horizontal polarization reception element of the antenna 200T and the vertical polarization signal received by the vertical polarization reception element of the antenna 200T are converted by the conversion unit ( (A converter) 201T, and the connection between the converter 201T and the broadcast receiving apparatus 100 is performed by one coaxial cable 202T3. The broadcast signal input from the connector unit 100F3 is split and input to the tuning / detection unit 131H and the tuning / detection unit 131V. The connector unit 100F3 may have a function of supplying operation power to the conversion unit 201T.

  The conversion unit 201T may belong to equipment of an environment (for example, an apartment house) in which the broadcast receiving device 100 is installed. Alternatively, it may be configured as a device integrated with the antenna 200T and installed in a house or the like. The conversion unit 201T performs frequency conversion on one of the horizontal polarization signal received by the horizontal polarization reception element of the antenna 200T and the vertical polarization signal received by the vertical polarization reception element of the antenna 200T. Perform processing. By this processing, 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 It is possible to simultaneously transmit to the broadcast receiving apparatus 100 with the coaxial cable 202T3. If necessary, the frequency conversion processing may be performed on both the horizontal polarization signal and the vertical polarization signal, but also in this case, the frequency bands of the two after the frequency conversion need to be different from each other. . Further, the broadcast receiving apparatus 100 may include one broadcast signal input connector unit 100F3.

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

  In addition, it is preferable that the frequency conversion process is performed on a signal transmitted with the secondary 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 terrestrial digital broadcasting service than the signal transmitted with the secondary polarization. Therefore, in order to more suitably maintain compatibility with the current terrestrial digital broadcasting service, the signal transmitted with the main polarization is not frequency-converted, and the signal transmitted with the sub-polarization is frequency-converted. Can be said to be preferable.

  Further, when frequency-converting a signal transmitted with the secondary polarization, the frequency band of the signal transmitted with the secondary polarization in the converted signal is greater than the frequency band of the signal transmitted with the primary polarization. It is desirable to increase. Thus, in the initial scan of the broadcast receiving apparatus 100, if the scan is started from the low frequency side and is advanced to the high frequency side, the signal transmitted with the main polarization is earlier than the signal transmitted with the secondary polarization. An initial scan can be performed. As a result, it is possible to more suitably perform a process of reflecting the setting by the initial scan of the current terrestrial digital broadcast service to the setting by the initial scan of the advanced terrestrial digital broadcast service.

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

  It is preferable that the frequency band after the conversion by the frequency conversion process be between 710 and 1032 MHz. That is, when trying to simultaneously receive the terrestrial digital broadcasting service and the BS / CS digital broadcasting service, the broadcasting signal of the terrestrial digital broadcasting service received by the antenna 200T and the broadcasting signal of the BS / CS digital broadcasting service received by the antenna 200B are used. May be mixed and transmitted to the broadcast receiving apparatus 100 via one 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 horizontal polarization signal It is also 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 while avoiding interference between the terrestrial digital broadcast service and the vertically polarized signal. In addition, in consideration of reception of a retransmission broadcast signal by a cable television (Community Antenna TV or Cable TV: CATV) station, a frequency band of 770 MHz or less (a band corresponding to UHF 62 ch or less) in television broadcast distribution by a cable television station. Is used, it is more preferable that the frequency band after the conversion by the frequency conversion process is set to 770 to 1032 MHz which exceeds the band corresponding to the UHF 62ch.

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

  As described above, in the dual-polarization transmission method according to the embodiment of the present invention, both the horizontal polarization signal and the vertical polarization signal are used for transmitting a 4K broadcast program. Therefore, in order to correctly reproduce the 4K broadcast program, it is necessary for the receiving side to correctly grasp the combination of the physical channels of the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with the vertical polarization. Performing the frequency conversion process, for the same physical channel, even when the broadcast signal transmitted in the horizontal polarization and the broadcast signal transmitted in the vertical polarization are input to the receiving device as signals in different frequency bands, In the broadcast receiving apparatus 100 of the present embodiment, by referring to the parameters (for example, main signal identification and physical channel number identification) of the TMCC information 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 the vertical polarization. Thus, the broadcast receiving apparatus 100 of the present embodiment can suitably receive, demodulate, and reproduce a 4K broadcast program.

  7B, FIG. 7C, and FIG. 7D all describe examples 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.

  As described above, the broadcast wave of the 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. The signal can also be received by the first tuner / demodulation unit 130C of the device 100. When the broadcast wave of the terrestrial digital broadcast is received by the first tuner / demodulation unit 130C, among the broadcast signals of the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored. However, the broadcast signal transmitted in the current terrestrial digital broadcasting service layer is reproduced.

<Pass-through transmission system for advanced terrestrial digital broadcasting services>
The broadcast receiving device 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 converted to the same frequency or frequency by the same signal system, and transmitted to a CATV distribution system.

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

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

  When the pass-through transmission of the first method is applied to the advanced terrestrial digital broadcasting service of the dual-polarization transmission method according to the embodiment of the present invention, a cable television station is used for a broadcast signal transmitted with horizontal polarization. The signal band extraction and the level adjustment are performed in the head end equipment 400C, and transmission is performed at the same frequency as the transmission signal frequency. On the other hand, with respect to the broadcast signal transmitted in the vertical polarization, signal band extraction and level adjustment are performed in the head-end equipment 400C of the cable television station, and the same frequency conversion processing as described in FIG. After performing a process of converting the broadcast signal into a frequency band higher than a frequency band of 470 to 770 MHz, which is a band corresponding to UHF channels 13 to 62 ch). By this processing, the frequency band of the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with the vertical polarization do not overlap, so that the signal can be transmitted using one coaxial cable (or optical fiber cable). It becomes. The transmitted signal can be received by the broadcast receiving device 100 of the present embodiment. The process of receiving and demodulating the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with 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 will not be repeated.

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

  When the pass-through transmission of the second system is applied to the advanced terrestrial digital broadcasting service of the dual-polarization transmission system according to the embodiment of the present invention, the cable television station transmits the broadcast signal transmitted by the horizontal polarization. The signal is extracted and the level is adjusted in the headend equipment 400C, and the transmission is performed after the frequency conversion processing to the frequency set by the CATV facility manager is performed. On the other hand, with respect to the broadcast signal transmitted in the vertical polarization, signal band extraction and level adjustment are performed in the head-end equipment 400C of the cable television station, and the same frequency conversion processing as described in FIG. After performing a process of converting the broadcast signal into a frequency band higher than the frequency band of 470 to 770 MHz, which is a UHF band of 13 ch to 62 ch). The frequency conversion process shown in FIG. 7H is different from FIG. 7F in that the broadcast signal transmitted with the horizontally polarized wave is not limited to the 470 to 770 MHz frequency band, which is the UHF 13 ch to 62 ch band, but to a lower frequency band. The frequency conversion is performed so that the range is widened and rearranged in the range of 90 to 770 MHz. By this processing, the frequency band of the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with the vertical polarization do not overlap, so that the signal can be transmitted using one coaxial cable (or optical fiber cable). It becomes. The transmitted signal can be received by the broadcast receiving device 100 of the present embodiment. The process of receiving and demodulating the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with 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 will not be repeated.

  As another modified example of the frequency conversion processing of the head-end equipment 400C of the cable television station in FIG. 7G, the broadcast signal at the time of pass-through output after the frequency conversion may be changed from the state shown in FIG. 7H to the state shown in FIG. 7I. In this case, signal band extraction and level adjustment are performed for both the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with the vertical polarization, and the frequency conversion processing to the frequency set by the CATV facility manager is performed. May be performed after the transmission. In the example of FIG. 7I, both the broadcast signal transmitted with the horizontal polarization and the broadcast signal transmitted with the vertical polarization are frequency-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 use efficiency of the broadcast signal becomes higher than that in FIG. 7H.

  In addition, since the band for relocating the broadcast signal is wider than the frequency band of 470 to 710 MHz, which is the band of 13 to 52 channels of UHF at the time of antenna reception, the signal is transmitted with horizontal polarization as shown in the example of FIG. 7I. It is also possible to alternately rearrange the broadcast signal transmitted and the broadcast signal transmitted with the vertical polarization. At this time, as shown in the example of FIG. 7I, a pair of a broadcast signal transmitted with horizontal polarization and a broadcast signal transmitted with vertical polarization, which were the same physical channel at the time of antenna reception, is combined If the rearrangement is performed alternately in the channel order, when the broadcast receiving apparatus 100 of the present embodiment performs the initial scan from the low frequency side, the broadcast signal transmitted with the horizontal polarization originally having the same physical channel and the vertical polarization Initially, the initial setting of the pair of broadcast signals transmitted in the same physical channel unit can be proceeded, and the initial scan can be performed efficiently.

  7E, FIG. 7F, FIG. 7G, FIG. 7H, and FIG. 7I all describe examples in which horizontal polarization is the main polarization, but depending on the operation, horizontal polarization and vertical polarization May be reversed.

  As described above, the broadcast wave of the terrestrial digital broadcast of the dual-polarization transmission system in which the above-described pass-through transmission system is performed can be received and reproduced by the second tuner / demodulation unit 130T of the broadcast receiving device 100. However, it can also be received by the first tuner / demodulation unit 130C of the broadcast receiving device 100. When the broadcast wave of the terrestrial digital broadcast is received by the first tuner / demodulation unit 130C, among the broadcast signals of the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored. However, the broadcast signal transmitted in the current terrestrial digital broadcasting service layer is reproduced.

[Transmission system 2 for advanced terrestrial digital broadcasting service]
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-mentioned transmission system of the advanced terrestrial digital broadcasting service according to the embodiment of the present invention, a hierarchical division multiplexing transmission system will be described. explain. The hierarchical division multiplex transmission system according to the embodiment of the present invention is a system in which some specifications are common to 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 a broadcast wave of a current 2K broadcast service. In the 2K broadcast, the reception level of the 4K broadcast is suppressed to the required C / N or less, and reception is performed as before. For 4K broadcasting, 2K broadcasting waves are canceled by using a reception technology corresponding to LDM (hierarchical division multiplexing) technology while the transmission capacity is expanded by multi-level modulation and the like, and reception is performed with the remaining 4K broadcasting waves. Do.

  FIG. 8A shows an example of a hierarchical division multiplex transmission system in an advanced digital terrestrial broadcasting service according to an embodiment of the present invention. The upper layer is composed of the modulated wave of the current 2K broadcast, the lower layer is composed of the modulated wave of the 4K broadcast, and the upper layer and the lower layer are multiplexed and output as a composite wave. For example, the upper layer may use 64QAM or the like as a modulation scheme, and the lower layer may use 256QAM or the like as a modulation scheme. Note that the 2K broadcast program transmitted using the upper layer and the 4K broadcast program transmitted using the lower layer may be a simulcast that transmits a broadcast program having the same content at different resolutions, or different content. May be transmitted.

  FIG. 8B shows an example of a configuration of a broadcasting system of an advanced terrestrial digital broadcasting service using the hierarchical division multiplex transmission system according to the embodiment of the present invention. The configuration of the broadcasting system of the advanced digital terrestrial broadcasting service using the hierarchical division multiplex transmission system is basically the same as the configuration of the broadcasting system shown in FIG. This is a transmission antenna for transmitting a broadcast signal obtained by multiplexing a 2K broadcast of the hierarchy and a 4K broadcast of the 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 other operation units.

  The broadcast signal received by the antenna 200L is input to the tuning / detection unit 131L from the connector unit 100F4 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 apparatus 100, as shown in FIG. 8C, the conversion unit 201L performs frequency conversion amplification processing on the broadcast signal. Is also good. That is, when the antenna 200L is installed on the roof of an apartment or the like and the broadcast signal is transmitted to the broadcast receiving device 100 in each room by the long coaxial cable 202L, the broadcast signal is attenuated, and the channel selection / detection unit In 131L, there is a possibility that a problem may occur that a lower layer 4K broadcast wave cannot be received correctly.

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

  Further, the frequency band after conversion by the frequency conversion amplification process is between 710 to 1032 MHz exceeding the band corresponding to 52 channels of UHF or 770 to 1032 MHz exceeding the band corresponding to 62 channels of UHF (for example, retransmission by a cable television station, etc.). ), The bandwidth of the region between the frequency band before the conversion by the frequency conversion amplification process and the frequency band after the conversion is an integral multiple of the bandwidth (6 MHz) of one physical channel. It is preferable that the frequency conversion and amplification processing be performed only on physical channels using signal transmission by the hierarchical division multiplexing transmission method. Of the present embodiment according to the present embodiment, and the description thereof will not be repeated.

  Note that the broadcast receiving apparatus 100 of the present embodiment determines whether the received broadcast signal is a broadcast signal transmitted on the lower layer or a broadcast signal transmitted on the upper layer in the TMCC information described in FIG. 5H. It is possible to identify using upper and lower hierarchy identification bits. The broadcast receiving apparatus 100 according to the present embodiment determines whether the received broadcast signal is a broadcast signal that has been subjected to frequency conversion after receiving an antenna, by using the frequency conversion processing identification bit of the TMCC information described in FIG. 5F. Can be identified. The broadcast receiving apparatus 100 according to the present embodiment determines whether or not the received broadcast signal transmits a 4K program in the lower layer by using the 4K signal transmission layer identification bit of the TMCC information described in FIG. 5I. It is possible to identify. Although it is not impossible to perform these identification processes by demodulating the data carrier and referring to the control information included in the stream, it is necessary to demodulate the data carrier and the process becomes complicated. Since the processing is easier and faster when the identification is performed by referring to the above-described parameters of the TMCC information, for example, the initial scan of the broadcast receiving apparatus 100 can be further speeded up.

  Note that, as described above, 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 (hierarchical division multiplexing) technology. Therefore, the converter 201L shown in FIG. 8C is not necessarily required between the antenna 200L and the broadcast receiving device 100.

  The terrestrial digital broadcast wave transmitted by the hierarchical division multiplex transmission method described above can be received and reproduced by the third tuner / demodulation unit 130L of the broadcast receiver 100 as described above. The signal can also be received by the first tuner / demodulation unit 130C of the device 100. When the broadcast wave of the terrestrial digital broadcast is received by the first tuner / demodulation unit 130C, among the broadcast signals of the broadcast wave of the terrestrial digital broadcast, the broadcast signal transmitted in the layer of the advanced terrestrial digital broadcast service is ignored. However, the broadcast signal transmitted in the current terrestrial digital broadcasting service layer is reproduced.

[MPEG-2 TS system]
The broadcasting system of the present embodiment can support MPEG-2 TS, which is used in the current terrestrial digital broadcasting service, as a media transport system for transmitting data such as video and audio. Specifically, the format of the stream transmitted by the OFDM transmission wave in FIG. 4D (1) is MPEG-2 TS, and among the OFDM transmission waves in FIG. 4D (2) and FIG. The format of a stream transmitted in a layer in which a digital broadcast service is transmitted is MPEG-2 TS. The stream format obtained by demodulating the transmission wave by the first tuner / demodulation unit 130C of the broadcast receiving apparatus 100 in FIG. 2 is MPEG-2 TS. In addition, among the streams obtained by demodulating the transmission wave by the second tuner / demodulation unit 130T, the stream format corresponding to the layer in which the current terrestrial digital broadcasting service is transmitted is MPEG-2 TS. Similarly, among the streams obtained by demodulating the transmission wave by the third tuner / demodulation unit 130L, the stream format corresponding to the layer in which the current terrestrial digital broadcast 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 together with a control signal and a clock into one packet stream. Since it is handled as one packet stream including a clock, it is suitable for transmitting one content on one transmission path whose transmission quality is ensured, and is used in many current digital broadcasting systems. Further, it is possible to realize two-way communication via a two-way network such as a fixed network / mobile network, and to obtain additional contents via a broadband network by linking a function using a broadband network to a digital broadcasting service. It is possible to cope with a broadcast / communication cooperative system in which arithmetic processing in a server device, presentation processing in cooperation with a portable terminal device, and the like are combined with a digital broadcasting service.

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

[Control Signal of Broadcast System Using MPEG-2 TS System]
The control information of the MPEG-2 TS system includes a table mainly used for program arrangement information and a table used for other than program arrangement information. The table is transmitted in the form of a section, and the descriptor is placed in the table.

<Table used for program arrangement information>
FIG. 9B shows a list of tables used in the program arrangement information of the MPEG-2 TS broadcasting system. In the present embodiment, the following table 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

<Table 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 following table 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 arrangement information>
9D, 9E, and 9F show a list of descriptors used in the program arrangement information of the MPEG-2 TS broadcasting system. In this embodiment, the following descriptors are used as the program arrangement 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

(11) 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 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
(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 broadcasting system. In this embodiment, the following descriptors are used as descriptors 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 (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 the INT of the broadcasting system of the MPEG-2 TS system. In this embodiment, the following descriptors are used as INT descriptors. Note that descriptors used in the above-described program arrangement information and descriptors used other than in the program arrangement information are not used in the 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 this embodiment, the following descriptors are used as descriptors used in the AIT. Note that descriptors used in the above-described program arrangement information and descriptors used other than in the program arrangement information are not used in the INT.

(1) 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) 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 according to 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 of FIG. 4D (2) and FIG. 4D (3), the MMT system is used in principle for the stream system to be transmitted in the layer where the advanced terrestrial digital broadcasting service is transmitted. In addition, among the streams obtained by demodulating the transmission wave by the second tuner / demodulation unit 130T of the broadcast receiving apparatus 100 of FIG. 2, the stream format corresponding to the layer in which the advanced terrestrial digital broadcast service is transmitted is basically MMT. It is. Similarly, among the streams obtained by demodulating the transmission wave by the third tuner / demodulation unit 130L, the stream format corresponding to the layer in which the advanced terrestrial digital broadcasting service is transmitted is MMT in principle. As a modified example, an MPEG-2 TS stream may be operated by an advanced digital terrestrial broadcasting service. Further, the method of the stream obtained by demodulating the transmission wave by the fourth tuner / demodulation unit 130B is MMT.

  The MMT method is adapted to MPEG-2 in response to environmental changes related to content distribution, such as recent diversification of content, diversification of devices using the content, diversification of transmission paths for distributing the content, diversification of the content storage environment, and the like. This is a newly developed media transport method because there is a limit in the function of the TS method.

  The codes of the video signal and the audio signal of the broadcast program are set to MFU (Media Fragment Unit) / MPU (Media Processing Unit), put on a MMTP (MMT Protocol) payload, converted into MMTP packets, and transmitted as IP packets. Also, data contents and subtitle signals related to a broadcast program are also in the MFU / MPU format, put into an MMTP payload, converted into MMTP packets, and transmitted as IP packets.

  For transmission of MMTP packets, UDP / IP (User Datagram Protocol / Internet Protocol) is used in a broadcast transmission path, and UDP / IP or Transmission Control Protocol / Internet Protocol (TCP / IP) is used in a 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 a broadcast transmission path. FIG. 10B shows an MMT protocol stack in a 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 and the like. It is in the form of an MMT control message, put into an MMTP payload, converted into an MMTP packet, and transmitted as an IP packet. The TLV-SI is control information on multiplexing of IP packets, and provides information for channel selection and information on correspondence between IP addresses and services.

[Control signal of broadcast system using MMT method]
As described above, in the MMT method, 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 the form of a section, and the descriptor is placed in the table. The MMT-SI includes three layers: a message storing a table or a descriptor, a table having elements or 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 the TLV-SI of the MMT broadcasting system. In the present embodiment, the following table is used as the TLV-SI table.

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

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

(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

<Message used in MMT-SI>
FIG. 10E shows a list of messages used in the MMT-SI of the MMT broadcasting system. In this 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 operator

<Table used in MMT-SI>
FIG. 10F shows a list of tables used in the 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

<Descriptor 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 descriptors are used as MMT-SI descriptors.

(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
(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
(27) MH-Broadcaster Name Descriptor
(28) MH-Service Descriptor
(29) IP Data Flow Descriptor
(30) MH-CA Startup Descriptor

(31) MH-Type Descriptor
(32) 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-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 each control information in MMT method>
FIG. 10J shows a relationship between data transmission and a typical table in the broadcasting system of the MMT system.

  In the broadcast system of the MMT system, data transmission can be performed on 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 which is a data flow of an IP packet. The IP data flow includes a video asset including a series of video MPUs and an audio asset including a series of audio MPUs. Furthermore, a subtitle asset including a series of subtitle 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 with each other by an MPT (MMT package table) stored in a PA message and transmitted. Specifically, the package ID and the asset ID of each asset included in the package may be described in association with the MPT.

Although the assets constituting the package can be only the assets in the TLV stream, as shown in FIG. 10J, the assets transmitted by the IP data flow of the communication line can be included. This can be realized by including the 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 location information of each asset,
(1) Data multiplexed on the same IP data flow as MPT (2) Data multiplexed on IPv4 data flow (3) Data multiplexed on IPv6 data flow (4) Multiplexed on broadcast MPEG2-TS (5) Data multiplexed in the MPEG2-TS format in the IP data flow (6) Various data transmitted on various transmission paths, such as data at the specified URL, can be specified. .

  The broadcast system of the MMT system further has a concept of an event. The event is a concept indicating a so-called program handled by the MH-EIT included in the M2 section message and sent. Specifically, in the package indicated by the event package descriptor stored in the MH-EIT, a series of data included in the duration of the duration from the disclosure time stored in the MH-EIT is included in the concept of the event. This is the included data. The MH-EIT is used in the broadcast receiving apparatus 100 for various processing in units of the event (for example, processing for generating a program guide, controlling recording reservation and viewing reservation, copyright management processing such as temporary storage, and the like), and the like. Can be.

[Broadcast receiver channel setting processing]
<Initial scan>
In the current terrestrial digital broadcasting, it is common that the network ID differs for each transmission master, and information of other stations is not described in the NIT. Therefore, the broadcast receiving apparatus 100 according to the embodiment of the present invention, which is compatible with the current terrestrial digital broadcast, is compatible with the terrestrial digital broadcast (the advanced terrestrial digital broadcast, or the advanced terrestrial digital broadcast and the current terrestrial digital broadcast). With respect to terrestrial digital broadcasting in which broadcasting is simultaneously transmitted in another layer, the system has a function of searching (scanning) all receivable channels at a receiving point and creating a service list (receivable frequency table) based on the service ID. There is a need. In a region where the same network ID can be received by different physical channels by MFN (Multi Frequency Network), basically, a channel having a good reception C / N or a BER (Bit Error Rate) is selected. What is necessary is just to operate so that it may be stored in the service list.

  In the advanced BS digital broadcast or advanced CS digital broadcast received by the fourth tuner / demodulation unit 130B of the broadcast receiving apparatus 100 according to the embodiment of the present invention, the broadcast receiving apparatus 100 acquires the service list stored in the TLV-NIT. The service list need not be created. Therefore, for the advanced BS digital broadcast or the advanced CS digital broadcast received by the fourth tuner / demodulation unit 130B, the initial scan and the rescan described later are unnecessary.

<Rescan>
The broadcast receiving apparatus 100 according to the embodiment of the present invention has a rescan function in case of a new station opening, installation of a new relay station, change of a receiving point of a television receiver, and the like. When changing the already set information, the broadcast receiving apparatus 100 can notify the user of the change.

<Operation example at initial / rescan>
FIG. 11A shows an example of an operation sequence of a channel setting process (initial / re-scan) of the broadcast receiving device 100 according to the embodiment of the present invention. Although FIG. 2 shows an example in which the MPEG-2 TS is used as the media transport method, the same processing is basically performed when the MMT method is used.

  In the channel setting process, first, the reception function control unit 1102 sets a residential area (selects an area where the broadcast receiving apparatus 100 is installed) based on a user's instruction (S101). At this time, instead of the user's instruction, the setting of the residence area may be automatically performed based on the installation position information of the broadcast receiving apparatus 100 acquired by the predetermined processing. As an example of the installation position information acquisition processing, information may be acquired from a network connected to the LAN communication unit 121, or information about the installation position may be acquired from an external device connected to the digital I / F unit 125. . Next, an initial value of a frequency range to be scanned is set, and a tuner / demodulator (first tuner / demodulator 130C, second tuner / demodulator 130T, third tuner / demodulator) is tuned so as to tune to the set frequency. When the demodulation unit 130L is not distinguished, it is described as follows.

  The tuner / demodulation unit performs tuning based on the instruction (S103), and if locking to the set frequency is successful (S103: Yes), the process proceeds to S104. If the lock has not been successful (S103: No), the process proceeds to S111. In the process of S104, the C / N is confirmed (S104). If the C / N is equal to or more than a predetermined value (S104: Yes), the process proceeds to S105, and the reception confirmation process is performed. If a C / N higher than a predetermined value is not obtained (S104: No), the process proceeds to S111.

  In the reception confirmation processing, the reception function control unit 1102 first obtains the BER of the received broadcast wave (S105). Next, by acquiring and collating the NIT, it is confirmed whether or not the NIT is valid data (S106). If 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 relating to the physical conditions of the broadcast transmission path corresponding to each transport stream ID / original network ID is obtained from the terrestrial distribution system descriptor. Further, a list of service IDs is obtained from the service list descriptor.

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

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

  Upon completion of the reception confirmation processing, 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 processing of S103 to S110 is repeated. If 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). If there is an overlap of the remote control keys, the user may be notified of the duplication, and may be prompted to change the remote control key settings (S114). The service list created / updated in the above-described process is stored in the non-volatile memory such as the ROM 103 or the storage (storage) unit 110 of the broadcast receiving device 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 terrestrial 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 service ID described above. 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-mentioned remote control key ID.

  In the broadcast receiving apparatus 100, the above-described frequency range to be scanned may be controlled so as to be appropriately changed according to the broadcast service to be received. For example, when the broadcast receiving apparatus 100 is receiving a broadcast wave of the current digital terrestrial broadcasting service, the control is performed so as to scan a frequency range of 470 to 770 MHz (corresponding to 13 to 62 ch of a physical channel). 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. Control to be performed.

  When the broadcast receiving apparatus 100 is receiving a broadcast wave including an advanced digital terrestrial broadcast service, the frequency range of 470 to 1010 MHz (the frequency conversion processing shown in FIG. 7D and the frequency conversion amplification processing shown in FIG. 8C). Control to scan). 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 process of S112. Control to be performed. Note that even when the broadcast receiving apparatus 100 is receiving the advanced terrestrial digital broadcast service, if it is determined that the frequency conversion processing and the frequency conversion amplification processing are not performed, the frequency of 470 to 770 MHz is used. What is necessary is just to control to scan only the range. The selection of the frequency range to be scanned can be controlled by the broadcast receiving apparatus 100 based on the system identification and the frequency conversion processing identification of the TMCC information.

  In the case where the broadcasting system according to the embodiment of the present invention has, for example, the configuration shown in FIG. 7C and the broadcast receiving apparatus 100 is receiving the advanced terrestrial digital broadcasting service of the dual-polarization transmission system, channel selection / detection One of the unit 131H and the tuning / detection unit 131V may scan a frequency range of 470 to 770 MHz, and the other may scan a frequency range of 770 to 1010 MHz (detection is performed by the other tuning / detection unit). When the frequency conversion process is performed on the transmission wave with the polarization). Such control based on the system identification and the frequency conversion processing identification of the TMCC information makes it possible to omit scanning in an unnecessary frequency range and reduce the time required for channel setting. Further, in this case, both the tuning / detection unit 131H and the tuning / detection unit 131V may advance the operation sequence of FIG. 11A in parallel, and synchronize the loop of the 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, a pair of the horizontally polarized signal and the vertically polarized signal transmitted on the same physical channel is received in parallel. Then, control information and the like in the packet stream of the advanced terrestrial digital service transmitted as a pair of the horizontal polarization signal and the vertical polarization signal can be decoded and acquired during the loop processing. This is preferable because the scanning and the creation of the service list proceed efficiently.

  Similarly, the broadcast receiving apparatus 100 has a configuration shown in FIG. 8B and further includes a plurality of tuners / demodulators (tuning / detection units), that is, a so-called double tuner configuration (for example, includes a plurality of third tuners / demodulators 130L). Configuration), when receiving the advanced digital terrestrial broadcasting service of the hierarchical division multiplex transmission system, scans the frequency range of 470 to 770 MHz on one side of the double tuner and scans the frequency range of 770 to 1010 MHz on the other side. (When frequency conversion amplification processing is performed). By performing such control, it is possible to reduce the time required for channel setting as in the case described above.

  As described with reference to FIGS. 8A, 8B, and 8C, in the configuration shown in FIG. 8B, the terrestrial digital broadcasting service transmitted on either the upper layer or the lower layer is the current terrestrial digital broadcasting service. is there. Therefore, for example, of 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 broadcast service is transmitted, and performs the other frequency range. In parallel, scanning may be performed by the third tuner / demodulation unit 130L. Also in this case, it is possible to reduce the time required for channel setting as in the case of the parallel scanning by the double tuner of the third tuner / demodulation unit 130L described above. Whether the current terrestrial digital broadcasting service or the advanced terrestrial digital broadcasting service is transmitted in the frequency range of 470 to 770 MHz or the frequency range of 770 to 1010 MHz is determined by an initial scan / rescan operation. Before starting the sequence, the third tuner / demodulation unit 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). Reception is performed, TMCC information transmitted at each frequency is obtained, and identification is possible by referring to parameters (for example, system identification parameters) stored in the TMCC information.

  Note that, in the advanced terrestrial digital broadcasting service of the dual-polarization transmission system, for example, both the horizontal polarization signal and the vertical polarization signal, such as the 4K broadcast program of the C layer shown in the hierarchical division example (1) of FIG. In the case of a channel having a broadcast program to be transmitted using, 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. Write in the list. Also, in the case of the 2K broadcast program of the B layer shown in the figure, if the same broadcast program is transmitted in the B layer of the horizontal polarization signal and the B layer of the vertical polarization signal, the same transport 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 on the same layer transmitted with different polarizations, it is recognized as being merged into one channel and not as separate channels. In this way, in the channel selection process using the service list, it is possible to avoid confusion of the user 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 system, when different broadcast programs are transmitted between 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 layer is treated as the virtual D layer), 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 in the broadcast receiving apparatus 100 by referring to an additional layer transmission identification parameter of the TMCC information. It can be identified by judging.

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

<Example of one-touch tuning process>
(1) By pressing a one-touch key of a remote controller, a service of “service_id” specified by “remote_control_key_id” is selected.
(2) The last mode is set, and the channel information after tuning is displayed.

<Processing example of channel selection by channel up / down button>
(1) By pressing a channel up / down key on the remote controller, channel selection is performed in the order of three digits used for direct channel selection.
(1-1) When the up key is pressed, the upper adjacent service having the three-digit number is selected. However, if the current three-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, when the current value of the three-digit number is the service list minimum value, the service with the maximum number is selected.
(2) The last mode is set, and the channel information after tuning is displayed.

<Example of direct tuning process>
(1) When direct channel selection is selected, a state of waiting for input of a three-digit number is entered.
(2-1) If the input of the three-digit number is not completed within a predetermined time (about 5 seconds), the mode is returned to the normal mode, and the channel information of the currently selected service is displayed.
(2-2) When the input of the three-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. I do.
(3) If a channel exists, a channel selection process is performed, a last mode is set, and channel information display after the channel selection is performed.

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

<Remote control of broadcast receiver>
FIG. 12A shows 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 (standby on / off) the power of the broadcast receiving apparatus 100, and a cursor key (up, down, left, right) 180R2 for moving a cursor up, down, left, and right. , A determination key 180R3 for determining the item at the cursor position as a selection item, and a return key 180R4.

  Further, the remote controller 180R includes a network switch key (altitude terrestrial digital, terrestrial digital, altitude BS, BS, CS) 180R5 for switching a broadcast network received by the broadcast receiving device 100. The remote controller 180R has one-touch keys (1 to 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. And 10 keys used for In the example shown in the figure, the ten keys are also used as the one-touch key 180R6, and in the case of direct channel selection, the three-digit number can be input by operating the one-touch key 180R6 after directly 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 table and the system menu can be operated in detail by using the cursor key 180R2, the enter key 180R3, and the return key 180R4.

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

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

<Processing example of network switching using advanced terrestrial digital key>
The remote control 180R of the broadcast receiving apparatus 100 according to the embodiment of the present invention includes an “advanced terrestrial digital key”, a “terrestrial digital key”, an “advanced BS key”, a “BS key”, and a “CS key” as network switching keys 180R5. Here, the “advanced terrestrial digital key” and “terrestrial digital key” are used in the advanced terrestrial digital broadcasting service when, for example, simultaneous broadcasting of 4K broadcast program and 2K broadcast program is performed in different layers. In the pressed state, the channel selection of the 4K broadcast program may be prioritized when the channel is selected, and when the “terrestrial digital key” is pressed, the channel selection of the 2K broadcast program may be prioritized in the channel selection. 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, pressing the “terrestrial digital key” forces the 2K broadcast. Controls such as selection of a program can be performed.

<Example of screen display when tuning>
As described above, the broadcast receiving apparatus 100 according to the embodiment of the present invention performs channel selection by one-touch channel selection, channel up / down channel selection, direct channel selection, or the like. It has a function of displaying 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 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 selection key of the remote control, and the service logo are displayed. And the three-digit number may be displayed. The banner display 192A2 is an example of a banner display displayed when a 4K broadcast program is selected. For example, in addition to the same information as the above-described banner display 192A1, the program being received is a 4K broadcast program. A mark that symbolizes the “altitude” indicating the fact is further displayed. When a resolution conversion process, a downmix process, or the like is performed, a display indicating that fact may be performed. In the example of the banner display 192A2, for example, it is displayed that the down-conversion processing from UHD resolution to HD resolution and the down-mix processing 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 simultaneous broadcasting or the like, any broadcast program Can be appropriately grasped by the user as to whether or not is displayed.

  According to the system of the advanced digital broadcasting service having some or all of the functions according to the embodiment of the present invention described above, the advanced digital broadcasting with higher functionality in consideration of compatibility with the current digital broadcasting service is also considered. It becomes possible to provide a transmission technology and a reception technology of a broadcast service. That is, it is possible to provide a technique for more appropriately transmitting or receiving advanced digital broadcasting services.

  As described above, the example of the embodiment of the present invention has been described. However, the configuration for realizing the technology of the present invention is not limited to the above-described example, and 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 one embodiment can be added to the configuration of another embodiment. These all belong to the scope of the present invention. Further, numerical values, messages, and the like appearing in sentences and figures are merely examples, and using different ones does not impair the effects of the present invention.

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

  Note that 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. After the product is shipped, it may be obtained from another application server 500 or the like on the Internet 200 via the LAN communication unit 121. Further, the software stored in a memory card, an optical disk, or the like may be obtained via the extension 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. After the product is shipped, it may be obtained from another application server 500 or the like on the Internet 200 via the LAN communication unit 721 or the mobile telephone network communication unit 722 or the like. Further, the software stored in a memory card, an optical disk, or the like may be obtained via the extension interface unit 724 or the like.

  Further, the control lines and information lines shown in the figure indicate those which are considered necessary for explanation, and do not necessarily indicate all control lines and information lines on the product. In fact, it can be considered that almost all components are interconnected.

  100: Broadcast receiving device, 101: Main control unit, 102: System bus, 103: ROM, 104: RAM, 110: Storage (storage) unit, 121: LAN communication unit, 124: Extended interface unit, 125: Digital interface unit , 130C, 130T, 130L, 130B: tuner / demodulator, 140S, 140U: decoder, 180: operation input, 191: video selector, 192: monitor, 193: video output, 194: audio selector, 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 (7)

A tuner that receives a transmission wave that stores identification information capable of identifying a frequency band when the transmission wave is transmitted in the air on a carrier that is modulated differently from the data carrier,
A control unit;
With
The control unit uses the identification information included in the transmission wave received by the tuner to identify a frequency band when the transmission wave is transmitted in the air,
Broadcast receiver. The broadcast receiving device according to claim 1,
Information indicating a physical channel number is stored in the identification information,
The broadcast receiving device, wherein the control unit identifies a frequency band previously associated with the physical channel number based on the physical channel number. A tuner / demodulator that receives a plurality of different transmission waves transmitted in the air in a plurality of different polarization directions and generates a stream by performing demodulation processing using a pair of transmission waves among the plurality of different transmission waves. Department and
A control unit;
With
The control unit, by the identification information included in the transmission wave received by the tuner / demodulation unit, identifies a pair of transmission waves used for the demodulation processing,
Broadcast receiver. The broadcast receiving apparatus according to claim 3,
The broadcast receiving device, wherein the identification information is stored in a carrier that is modulated differently from a data carrier in a transmission wave received by the tuner / demodulation unit. The broadcast receiving apparatus according to claim 3,
The plurality of different transmission waves, each having a predetermined bandwidth divided into a predetermined number of segments,
In the demodulation processing, a part of the transmission wave pair identified based on the identification information is transmitted by a second transmission wave of the transmission wave pair and a part of the segments transmitted by the first transmission wave. A broadcast receiving device that generates the stream based on some segments. Receiving a first transmission wave transmitted in the air in a first polarization direction and a second transmission wave transmitted in the air in a second polarization direction different from the first polarization direction; A tuner / demodulator that generates a stream by performing demodulation processing using one transmission wave and the second transmission wave;
A control unit;
With
The first transmission wave and the second transmission wave each have a predetermined bandwidth divided into a predetermined number of segments,
The control unit, based on the identification information included in the second transmission wave, of the segments transmitted by the second transmission wave in the second polarization direction, in the first polarization direction A segment group having the same segment number as a segment belonging to a predetermined layer transmitted by the first transmission wave is identified as a layer different from the predetermined layer of the first transmission wave.
Broadcast receiver. The broadcast receiving apparatus according to claim 6,
The broadcast receiving device, wherein the identification information is stored in a carrier that is modulated differently from a data carrier in the second transmission wave received by the tuner / demodulation unit.

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