JP2019126044A - Broadcast receiving device and content output method - Google Patents

Abstract

To provide a broadcast receiving device capable of executing a function with a higher added value.SOLUTION: A broadcast receiving device includes digital broadcast receiving unit, a network communication unit, and a data string conversion processing unit capable of generating a new data string by mixing a data string of a content received the digital broadcast receiving unit and the data acquired by a network communication unit. Performance information of an external device can be acquired via a digital interface capable of communicating with the external device, and outputting the received content from the digital interface to the external device. When the received content is output to the external device from the interface, switching is made between a manner in which the data string of the content received by the digital broadcast receiving unit and the data string acquired by the network communication unit are mixed and generated by the data string conversion processing unit to output the new data string from the digital interface or a manner in which the data string for which the mixing process is not performed is output from the digital interface, according to the performance information of the external device.SELECTED DRAWING: Figure 29A

Description

  The present invention relates to a broadcast receiving apparatus and a content output method.

  One of the extended functions of digital broadcasting service is data broadcasting which transmits digital data by airwaves and displays various information such as weather forecast, news, and recommended programs. Many television receivers capable of receiving data broadcasting are already on the market, and a large number of techniques related to data broadcasting reception have been published, including Patent Document 1 below.

JP 2001-186486 A

  In response to the recent environmental change relating to content distribution, television receivers are also required to have various functional extensions. In particular, there are many requests for distribution of content and linked applications using a broadband network environment such as the Internet, and requests for high resolution / high definition of video content. However, it is difficult to provide a high-value-added television receiver that can meet the above requirements only by diverting only the data broadcast reception function and the like included in the current television receiver or by only extending the function such as the data broadcast reception function. .

  An object of the present invention is to provide a broadcast receiving apparatus capable of executing functions with higher added value.

  As a means for solving the above-mentioned subject, art indicated in a claim is used.

  An example is a broadcast receiving apparatus, which is a digital broadcast receiving unit that receives digital broadcasts to which content is transmitted, a network communication unit capable of network communication, and the content received by the digital broadcast receiving unit. A data string conversion processor capable of generating a new data string by mixing a data string and a data string acquired by the network communication unit; a digital interface capable of communicating with an external device; and a controller. The broadcast receiving apparatus can acquire the performance information of the external device and the information on the network communication state of the external device through the digital interface, and the control unit receives the received content from the digital interface to the external device. When the data is output to the external A data string of the content received by the digital broadcast receiving unit and a data string acquired by the network communication unit according to the device performance information and the information on the network communication state of the external device Switching between outputting a new data string generated by mixing at the digital interface or outputting a data string in a state in which the mixing processing is not performed from the digital interface.

  By using the technology of the present invention, it is possible to provide a broadcast receiving apparatus capable of executing functions with higher added value.

FIG. 1 is a system configuration diagram showing an example of a broadcast communication system including a broadcast receiving apparatus according to a first embodiment. It is explanatory drawing of the outline | summary of the coding signal in MMT. It is a block diagram of MPU in MMT. It is a block diagram of the MMTP packet in MMT. It is a conceptual diagram of the protocol stack of the broadcast system which uses MMT. It is a hierarchy block diagram of the control information used by a broadcast system. It is a list of tables used by TLV-SI of a broadcast system. It is a list of descriptors used by TLV-SI of a broadcast system. It is a list of messages used by MMT-SI of a broadcast system. It is a list of tables used by MMT-SI of a broadcast system. It is a list (the 1) of the descriptor used by MMT-SI of a broadcast system. It is a list (the 2) of the descriptor used by MMT-SI of a broadcast system. It is a figure which shows the data transmission of a broadcast system, and the relationship of each table. FIG. 1 is a block diagram of a broadcast receiving apparatus according to a first embodiment. FIG. 5 is a block diagram of a logical plane structure of a presentation function of the broadcast receiving apparatus according to the first embodiment. FIG. 2 is a system configuration diagram of clock synchronization / presentation synchronization of the broadcast receiving apparatus according to the first embodiment. FIG. 2 is a software configuration diagram of the broadcast receiving apparatus according to the first embodiment. FIG. 2 is a block diagram of a broadcast station server according to a first embodiment. 5 is a block diagram of a service provider server according to Embodiment 1. FIG. FIG. 1 is a block diagram of a portable information terminal according to a first embodiment. FIG. 2 is a software configuration diagram of the mobile information terminal according to the first embodiment. It is a figure which shows the data structure of MH-TOT of a broadcast system. It is a figure which shows the format of the JST_time parameter of a broadcast system. FIG. 7 is a diagram showing a method of calculating the current date from the MJD of the broadcast receiving apparatus according to the first embodiment. It is a figure which shows the structure of the NTP format of a broadcast system. It is a figure which shows the data structure of MPU time stamp descriptor of a broadcast system. It is a figure which shows the data structure of the time information of the TMCC extended information area | region of a broadcast system. FIG. 6 is an operation sequence diagram at the time of channel scanning of the broadcast receiving apparatus according to the first embodiment. It is a figure which shows the data structure of TLV-NIT of a broadcast system. It is a figure which shows the data structure of the satellite distribution system descriptor of a broadcast system. It is a figure which shows the data structure of the service list | wrist descriptor of a broadcast system. It is a figure which shows the data structure of AMT of a broadcast system. FIG. 6 is an operation sequence diagram at the time of channel selection of the broadcast receiving apparatus according to the first embodiment. It is a figure which shows the data structure of MPT of a broadcast system. It is a figure which shows the data structure of LCT of a broadcast system. It is a figure which shows the example of allocation of the layout to the layout number based on LCT. It is a figure which shows the example of allocation of the layout to the layout number based on LCT. It is a figure which shows the example of allocation of the layout to the layout number based on LCT. It is a figure which shows the example of allocation of the layout to the layout number based on LCT. It is a figure explaining operation of exception processing of screen layout control based on LCT. It is a figure explaining operation of exception processing of screen layout control based on LCT. It is a figure which shows the data structure of MH-EIT of a broadcast system. FIG. 6 is a screen display diagram of an EPG screen of the broadcast receiving apparatus according to the first embodiment. FIG. 6 is a screen display diagram of an EPG screen of the broadcast receiving apparatus according to the first embodiment. FIG. 6 is a screen display diagram of an EPG screen of the broadcast receiving apparatus according to the first embodiment. FIG. 6 is a screen display diagram when displaying an emergency alert broadcast of the broadcast receiving apparatus according to the first embodiment. FIG. 7 is a block diagram of a broadcast receiving apparatus according to a second embodiment. It is a figure explaining the inconsistency of the present time display at the time of broadcast service switching. FIG. 13 is a diagram for explaining an operation of selection control of a current time information reference source according to the second embodiment. FIG. 10 is a screen display diagram of an EPG screen of the broadcast receiving apparatus according to the second embodiment. FIG. 10 is a screen display diagram of an EPG screen of the broadcast receiving apparatus according to the second embodiment. FIG. 16 is a system configuration diagram showing an example of a broadcast communication system including a broadcast reception apparatus according to a third embodiment. FIG. 10 is a block diagram of a broadcast receiving apparatus according to a third embodiment. FIG. 10 is a software configuration diagram of a broadcast receiving apparatus according to a third embodiment. FIG. 13 is a block diagram of a monitor device according to a third embodiment. FIG. 7 is an interface configuration diagram of a broadcast receiving apparatus and a monitoring apparatus according to a third embodiment. FIG. 16 is a diagram for explaining the data output control operation of the broadcast receiving apparatus according to the third embodiment. FIG. 16 is a diagram for explaining the data output control operation of the broadcast receiving apparatus according to the third embodiment. It is a figure which shows the data structure of MPU extended time stamp descriptor of a broadcast system. FIG. 16 is a diagram for explaining the data output control operation of the broadcast receiving apparatus according to the third embodiment. FIG. 16 is a diagram for explaining the data output control operation of the broadcast receiving apparatus according to the third embodiment. FIG. 18 is a diagram for explaining the operation of data mixing processing of the broadcast receiving apparatus according to the third embodiment.

Hereinafter, an example of an embodiment of the present invention will be described using the drawings.
Example 1

[System configuration]
FIG. 1 is a system configuration diagram showing an example of a broadcast communication system including the broadcast receiving apparatus of the present embodiment. The broadcast communication system of this embodiment includes a broadcast reception apparatus 100 and an antenna 100a, a broadband network such as the Internet 200, a router 200r and an access point 200a, a radio wave tower 300t of a broadcast station and a broadcast satellite (or communication satellite) 300s, a broadcast station It comprises a server 300, a service provider server 400, other application servers 500, a mobile telephone communication server 600, a base station 600b of a mobile telephone communication network, and a portable information terminal 700.

  The broadcast receiving apparatus 100 receives the broadcast wave transmitted from the radio tower 300t via the broadcast satellite (or communication satellite) 300s and the antenna 100a. Alternatively, the broadcast wave transmitted from the radio tower 300t may be received directly from the antenna 100a without passing through the broadcast satellite (or communication satellite) 300s. Also, the broadcast receiving apparatus 100 can be connected to the Internet 200 via the router apparatus 200 r, and can transmit and receive data by communication with each server apparatus on the Internet 200 and other communication devices.

  The router device 200 r is connected to the Internet 200 by wired communication, and is connected to the broadcast receiving apparatus 100 by wired communication or wireless communication and to the portable information terminal 700 by wireless communication. The wireless communication may use a method such as Wi-Fi (registered trademark). Thus, each server device or other communication device on the Internet 200, the broadcast receiving device 100, and the portable information terminal 700 can mutually transmit and receive data via the router device 200r. Communication between the broadcast receiving apparatus 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 passing through the router device 200r.

  The radio tower 300t is a broadcast facility of a broadcast station, and transmits broadcast waves including encoded data of a broadcast program, subtitle information, other applications, general-purpose data, and the like. The broadcast satellite (or communication satellite) 300s receives the broadcast wave transmitted from the radio wave tower 300t of the broadcast station, appropriately performs frequency conversion and the like, and transmits the broadcast to the antenna 100a connected to the broadcast receiving apparatus 100. It is a repeater that retransmits the waves. Further, the broadcasting station is provided with a broadcasting station server 300. The broadcast station server 300 stores metadata such as broadcast programs (moving image contents etc.) and program titles of each broadcast program, program ID, program summary, performer information, broadcast date and time, etc., and the moving image contents and each metadata are stored. It is possible to provide to a service provider based on a contract. The provision of the moving image content and each metadata to the service provider may be performed through an application programming interface (API) included in the broadcast station server 300.

  The service provider server 400 is a server device prepared by a service provider, and can provide various services linked to a broadcast program distributed from a broadcast station. In addition, the service provider server 400 stores, manages and distributes moving image content and metadata provided from the broadcast station server 300, various contents and applications linked to a broadcast program, and the like. In addition, in response to an inquiry from a television receiver or the like, it also has a function of searching for available contents or applications and providing a list. Note that storage, management and delivery of the content and metadata, and storage, management and delivery of the application may be performed by different server devices. The broadcasting station and the service provider may be the same or different. A plurality of service provider servers 400 may be prepared for each different service. Also, the broadcast station server 300 may have the function of the service provider server 400.

  The other application server 500 is a known server device that stores, manages, and distributes other general applications, operation programs, contents, data, and the like. There may be a plurality of other application servers 500 on the Internet 200.

  The mobile telephone communication server 600 is connected to the Internet 200, and connected to the portable information terminal 700 via the base station 600b. Mobile telephone communication server 600 manages telephone communication (call) and data transmission / reception via mobile telephone communication network of portable information terminal 700, and portable information terminal 700 and each server device on the Internet 200 and other communication devices. It enables transmission and reception of data by communication with Communication between the base station 600b and the portable information terminal 700 is performed using the Wideband Code Division Multiple Access (W-CDMA) (registered trademark) method, the Global System for Mobile communications (GSM) (registered trademark) method, the LTE (Long Term Evolution) method. Or other communication method may be used.

  The portable information terminal 700 has a function of telephone communication (call) via a mobile telephone communication network, a function of transmitting and receiving data, and a function of wireless communication by Wi-Fi (registered trademark) or the like. The portable information terminal 700 can be connected to the Internet 200 via the router device 200r or the access point 200a, or via the base station 600b of the mobile telephone communication network and the mobile telephone communication server 600. It is possible to transmit and receive data by communication with each server device of the above and other communication devices. The access point 200a is connected to the Internet 200 by wired communication, and connected to the portable information terminal 700 by wireless communication. The wireless communication may use a method such as Wi-Fi (registered trademark). Communication between the portable information terminal 700 and the broadcast receiving apparatus 100 can be performed via the access point 200a, the Internet 200, and the router 200r, or the base station 600b, the mobile telephone communication server 600, the Internet 200, and the router 200r. It may be performed via

[Overview of MMT method]
The broadcast receiving apparatus 100 shown in FIG. 1 is defined by an MPEG (Moving Picture Experts Group) -2 system which is widely adopted in a conventional digital broadcasting system as a media transport system for transmitting data such as video and audio. It is assumed that the television receiver is compatible with MMT (MPEG Media Transport) in place of the TS (Transport Stream) (hereinafter referred to as MPEG2-TS). The television receiver may be compatible with both MPEG2-TS and MMT.

  The MPEG2-TS is characterized in that components such as video and audio making up a program are multiplexed into one stream together with a control signal and a clock. Since it is handled as one stream including a clock, it is suitable for transmitting one content through one transmission path with secured transmission quality, and has been adopted in many conventional digital broadcasting systems. On the other hand, the functions of MPEG2-TS against environmental changes related to content distribution, such as diversification of content in recent years, diversification of equipment that uses content, diversification of transmission channels for distributing content, diversification of content storage environment, etc. Because of their limitations, the newly formulated media transport method is MMT.

  FIG. 2A shows an example of an outline of a coded signal in the MMT of this embodiment. As shown in the figure, the MMT of this embodiment has an MFU (Media Fragment Unit), an MPU (Media Processing Unit), an MMTP (MMT Protocol) payload, and an MMTP packet as elements constituting an encoded signal. I assume. The MFU is a format at the time of transmission of video, audio, etc., and may be configured in NAL (Network Abstraction Layer) units or access units. The MPU may be composed of MPU metadata including information on the configuration of the entire MPU, movie fragment metadata including information of encoded media data, and sample data which is encoded media data. In addition, it is possible to extract MFU from sample data. Moreover, in the case of media such as a video component and an audio component, the presentation time and the decoding time may be designated in units of MPUs or in units of access units. FIG. 2B shows an example of the configuration of the MPU.

  The MMTP packet is composed of a header part and an MMTP payload, and transmits MFU and MMT control information. The MMTP payload has a payload header corresponding to the content (data unit) stored in the payload section. FIG. 2C shows an example of an outline of constructing an MFU from video / audio signals and further storing it in an MMTP payload to construct an MMTP packet. In a video signal to be encoded using inter-frame prediction, it is desirable to configure the MPU in units of GOP (Group Of Pictures). In addition, when the size of the MFU to be transmitted is small, one MFU may be stored in one payload section, or a plurality of MFU may be stored in one payload section. If the size of the MFU to be transmitted is large, one MFU may be divided into a plurality of payload portions and stored. Also, the MMTP packet may be protected using a technique such as AL-FEC (Application Layer Forward Error Correction) or ARQ (Automatic Repeat Request) in order to recover packet loss on the transmission path.

  In the broadcast system of this embodiment, MPEG-H HEVC (High Efficiency Video Coding) is used as the video coding method, and MPEG-4 AAC (Advanced Audio Coding) or MPEG-4 ALS (Audio Lossless) as the audio coding method. Coding) shall be used. Coded data such as video and audio of a broadcast program encoded by each of the above-mentioned methods is in the form of MFU or MPU, and further loaded on an MMTP payload to be converted to an MMTP packet and transmitted as an IP (Internet Protocol) packet I assume. In addition, data content related to a broadcast program may be in the form of MFU or MPU, and may be further loaded on an MMTP payload to be MMTP packetized and transmitted as an IP packet. As a data content transmission method, a subtitle / character super transmission method used for streaming data synchronized with broadcast, an application transmission method used for data transmission between broadcast and asynchronous, synchronous / asynchronous message for an application operating on a television receiver Four types of event message transmission methods used for notification and general-purpose data transmission methods for transmitting other general-purpose data in a synchronous / asynchronous manner shall be prepared.

  For transmission of MMTP packets, UDP / IP (User Datagram Protocol / Internet Protocol) is used in the broadcast transmission path, and UDP / IP or TCP / IP (Transmission Control Protocol / Internet Protocol) is used in the communication line. . Also, in the broadcast transmission line, it is assumed that TLV (Type Length Value) multiplexing scheme is used for efficient transmission of IP packets. An example of a protocol stack of the broadcast system of this embodiment is shown in FIG. In the figure, (A) is an example of a protocol stack in a broadcast channel, and (B) is an example of a protocol stack in a communication line.

  In the broadcast system of this embodiment, a mechanism for transmitting two types of control information, MMT-SI (MMT-Signaling Information) and TLV-SI (TLV-Signaling Information), is prepared. MMT-SI is control information indicating the configuration of a broadcast program. It is assumed that the format of the control message of MMT is carried on the MMTP payload, MMTP packetized, and transmitted by IP packet. TLV-SI is control information on multiplexing of IP packets, and provides information for channel selection and correspondence information of IP address and service.

  Also, in a broadcast system using MMT, time information is transmitted to provide absolute time. It should be noted that while MPEG2-TS indicates the display time of components based on different clocks for each TS, MMT indicates the display time of components based on Coordinated Universal Time (UTC). Do. By these mechanisms, it becomes possible for the terminal device to synchronously display the components transmitted through different transmission paths from different transmission points. In order to provide UTC, IP packets in NTP (Network Time Protocol) format are used.

[Control information of broadcast system using MMT]
In the broadcast system supported by the broadcast receiving apparatus 100 of this embodiment, as described above, TLV-SI related to TLV multiplexing method for multiplexing IP packets as control information, and MMT as media transport method. Prepare related MMT-SI. The TLV-SI provides the information for the broadcast reception apparatus 100 to demultiplex the IP packets multiplexed in the broadcast transmission path. TLV-SI is composed of "table" and "descriptor". The "table" is transmitted in section form, and the "descriptor" is placed in the "table". MMT-SI is transmission control information indicating information related to the configuration of the MMT package and the broadcasting service. MMT-SI consists of three layers of "message" that stores "table" and "descriptor", "table" with elements and attributes that indicate specific information, and "descriptor" that indicates more detailed information. Shall be An example of the hierarchical structure of control information used in the broadcast system of this embodiment is shown in FIG.

<Table used by TLV-SI>
FIG. 5A shows a list of “tables” used in TLV-SI of the broadcast system to which the broadcast receiving apparatus 100 of this embodiment corresponds. In this embodiment, it is assumed that the following is used as a "table" of TLV-SI.

(1) TLV-NIT
A network information table for TLV (Network Information Table for TLV: TLV-NIT) represents information on the physical configuration of a TLV stream transmitted by the network and characteristics of the network itself.

(2) AMT
An Address Map Table (AMT) provides a list of multicast groups of IP packets that make up each service transmitted in the network.

(3) Table set by the business operator It is possible to prepare a table other than that set by the service business operator etc.

<Descriptor used in TLV-SI>
FIG. 5B shows a list of “descriptors” arranged in the TLV-SI of the broadcasting system to which the broadcast receiving apparatus 100 of this embodiment corresponds. In this embodiment, it is assumed that the following is used as a "descriptor" of TLV-SI.

(1) Service List Descriptor The service list descriptor provides a list of services by service identification and service type type.

(2) Satellite distribution system descriptor The satellite distribution system descriptor indicates the physical conditions of the satellite transmission line.

(3) System management descriptor The system management descriptor is used to identify broadcast and non-broadcast.

(4) Network Name Descriptor The network name descriptor describes a network name by character code.

(5) Descriptor set by the business operator Besides, it is possible to prepare a descriptor which the service business operator etc. has set independently.

<Message used in MMT-SI>
FIG. 6A shows a list of “messages” used in MMT-SI of the broadcasting system to which the broadcast receiving apparatus 100 of the present embodiment corresponds. In this embodiment, it is assumed that the following "messages" of MMT-SI are used.

(1) PA Message Package Access (PA) message is used to transmit various tables.

(2) M2 section message The M2 section message is used to transmit the MPEG-2 Systems section extension format.

(3) CA message The CA message is used to transmit a table for identification of the conditional access system.

(4) M2 short section message The M2 short section message is used to transmit a section short format of MPEG-2 Systems.

(5) Data Transmission Message The data transmission message is a message for storing a table related to data transmission.

(6) Message set by the business operator In addition, it is possible to prepare a message originally set by the service business operator or the like.

<Table used by MMT-SI>
FIG. 6B shows a list of “tables” used in MMT-SI of the broadcast system to which the broadcast receiving apparatus 100 of this embodiment corresponds. The table is control information having elements and attributes indicating specific information, and is stored in a message and transmitted in an MMTP packet. The message for storing the table may be determined according to the table. In this embodiment, it is assumed that the following is used as a "table" of MMT-SI.

(1) MPT
An MMT Package Table (MPT) provides information that configures a package, such as a list of assets and a location of assets on a network. The MPT may be stored in the PA message.

(2) PLT
The Package List Table (PLT) shows a list of IP data flows and packet IDs for transmitting PA messages of MMT packages provided as broadcast services, and IP data flows for transmitting IP services. The PLT may be stored in the PA message.

(3) LCT
A layout configuration table (LCT) is used to associate layout information for presentation with layout numbers. The LCT may be stored in the PA message.

(4) ECM
The Entitlement Control Message (ECM) is common information including program information and control information, and delivers key information and the like for descrambling. The ECM may be stored in the M2 section message.

(5) EMM
The Entitlement Management Message (EMM) transmits individual information including contract information for each subscriber and key information for decrypting the ECM (common information). The EMM may be stored in the M2 section message.

(6) CAT (MH)
CA table (Conditional Access Table: CAT) (MH) is used to store a descriptor for identification of a conditional access system. The CAT (MH) may be stored in the CA message.

(7) DCM
Download Control Message (DCM) transmits key related information such as a key for decrypting a transmission path cipher for download. The DCM may be stored in the M2 section message.

(8) DMM
The Download Management Message (DMM) transmits key related information such as a download key for decrypting the DCM. The DMM may be stored in the M2 section message.

(9) MH-EIT
The MH-Event Information Table (MH-EIT) is time-series information on events included in each service. The MH-EIT may be stored in the M2 section message.

(10) MH-AIT
The MH-Application Information Table (MH-AIT) stores all the information related to the application and the activation state required for the application. The MH-AIT may be stored in the M2 section message.

(11) MH-BIT
The MH-Broadcaster Information Table (MH-BIT) is used to present information of broadcasters existing on the network. MH-BIT may be stored in the M2 section message.

(12) MH-SDTT
The MH-Software Download Trigger Table (MH-SDTT) is used for download notification information. The MH-SDTT may be stored in the M2 section message.

(13) MH-SDT
MH-Service Description Table (MH-SDT) has a sub-table representing a service included in a specific TLV stream, and information on the organization channel, such as the organization channel name and the broadcaster name Transmit The MH-SDT may be stored in the M2 section message.

(14) MH-TOT
The MH-Time Offset Table (MH-TOT) transmits JST time and date (modified Julian date) information. The MH-TOT may be stored in the M2 short section message.

(15) MH-CDT
The MH-Common Data Table (MH-CDT) is used to transmit, in section form, common data to be stored in the non-volatile memory for all receivers that receive the MH-Common Data Table (MH-CDT). The MH-CDT may be stored in the M2 section message.

(16) DDM Table The Data Directory Management Table (DDM table) provides a directory structure of files constituting an application in order to separate the file structure of the application and the structure for file transmission. The DDM table may be stored in a data transfer message.

(17) DAM Table The Data Asset Management Table (DAM table) provides the configuration of MPUs in an asset and version information for each MPU. The DAM table may be stored in a data transmission message.

(18) DCC Table The data content management table (DCC table) provides file configuration information as data content in order to realize flexible and effective cache control. The DCC table may be stored in a data transfer message.

(19) EMT
An event message table (EMT) is used to transmit information on event messages. EMT may be stored in M2 section messages.

(20) Table set by the business operator It is possible to prepare a table other than that set by the service business operator etc.

<Descriptor used in MMT-SI>
FIG. 6C and FIG. 6D show a list of “descriptors” arranged in MMT-SI of the broadcast system corresponding to the broadcast reception apparatus 100 of the present embodiment. A descriptor is control information that provides more detailed information and shall be placed in a table. The table in which the descriptor is arranged may be determined according to the descriptor. In the present embodiment, it is assumed that the following is used as the "descriptor" of MMT-SI.

(1) Asset Group Descriptor The asset group descriptor provides asset group relationships and priorities within groups. Asset group descriptors may be placed in the MPT.

(2) Event Package Descriptor The event package descriptor provides the correspondence between an event representing a program and a package. The event package descriptor may be placed in the MH-EIT transmitted in the M2 section message.

(3) Background color specification descriptor The background color specification descriptor provides the backmost background color in the layout specification. A background color specification descriptor may be placed in the LCT.

(4) MPU presentation area designation descriptor The MPU presentation area designation descriptor provides a position for presenting the MPU. The MPU presentation area specification descriptor may be placed in the MPT.

(5) MPU Time Stamp Descriptor The MPU time stamp descriptor indicates the presentation time of the first access unit in presentation order in the MPU. The MPU timestamp descriptor may be located in the MPT.

(6) Dependency Descriptor The dependency relation descriptor provides the asset ID of the dependent asset. The dependency descriptor may be placed in the MPT.

(7) Access Control Descriptor The access control descriptor provides information for identifying the conditional access system. The access control descriptor may be located in MPT or CAT (MH).

(8) Scrambling System Descriptor The scrambling system descriptor provides information for identifying the encryption target at the time of scrambling and the type of encryption algorithm. The scrambling scheme descriptor may be located in MPT or CAT (MH).

(9) Message Authentication Method Descriptor The message authentication method descriptor provides information for identifying a message authentication method when performing message authentication. The message authentication scheme descriptor may be located in MPT or CAT (MH).

(10) Emergency information descriptor (MH)
The emergency information descriptor (MH) is used when performing emergency alert broadcasting. The emergency information descriptor (MH) may be located in the MPT.

(11) MH-MPEG-4 Audio Descriptor The MH-MPEG-4 Audio Descriptor describes basic information for specifying encoding parameters of an audio stream of ISO / IEC 14496-3 (MPEG-4 audio). Used to The MH-MPEG-4 audio descriptor may be located in the MPT.

(12) MH-MPEG-4 Audio Extension Descriptor The MH-MPEG-4 Audio Extension Descriptor is used to describe the profile and level of the MPEG-4 audio stream and settings specific to the coding scheme. The MH-MPEG-4 audio extension descriptor may be located in the MPT.

(13) MH-HEVC Video Descriptor The MH-HEVC video descriptor is based on ITU-T Recommendation H.264. 265 | Used to describe basic coding parameters of a video stream (HEVC stream) of ISO / IEC 23008-2. The MH-HEVC video descriptor may be placed in the MPT.

(14) MH-Link Descriptor The MH-Link Descriptor identifies the service provided when the viewer requests additional information related to a particular one described in the program alignment information system. The MH-link descriptor may be located in MPT, MH-EIT, MH-SDT, etc.

(15) MH-Event Group Descriptor The MH-Event Group Descriptor is used to indicate that events are grouped when there is a relationship between multiple events. The MH-Event Group Descriptor may be placed in the MH-EIT.

(16) MH-Service List Descriptor The MH-Service List Descriptor provides a list of services by service identification and service type type. The MH-service list descriptor may be located at MH-BIT.

(17) MH-Short Form Event Descriptor The MH-short form event descriptor represents an event name and a short description of the event in text form. The MH-Short Form Event Descriptor may be placed in the MH-EIT.

(18) MH-Extended Form Event Descriptor The MH-Extended Form Event Descriptor is used in addition to the MH-Short Form Event Descriptor to provide a detailed description of the event. MH-Extended Format Event Descriptor may be placed in MH-EIT.

(19) Video Component Descriptor The video component descriptor indicates parameters and a description regarding a video component, and is also used to represent an elementary stream in a character format. The video component descriptor may be arranged in MPT or MH-EIT.

(20) MH-stream identification descriptor The MH-stream identification descriptor is used to label a component stream of a service and to refer to the description content indicated by the video component descriptor in the MH-EIT by this label. . The MH-stream identifier descriptor may be located in the MPT.

(21) MH-Content Descriptor The MH-content descriptor indicates the genre of the event. The MH-content descriptor may be located at the MH-EIT.

(22) MH-Parental Rate Descriptor The MH-Parental Rate Descriptor represents age-based viewing restrictions and is also used to extend to other limiting conditions. The MH-Parental Rate Descriptor may be located in the MPT or MH-EIT.

(23) MH-voice component descriptor The MH-voice component descriptor indicates each parameter of the voice elementary stream, and is also used to represent the elementary stream in character format. The MH-voice component descriptor may be located in the MPT or MH-EIT.

(24) MH-Target Area Descriptor The MH-target area descriptor is used to describe a target area of a program or a part of streams constituting a program. The MH-Target Area Descriptor may be placed in the MPT.

(25) MH-series descriptor The MH-series descriptor is used to identify a series program. The MH-series descriptor may be located at the MH-EIT.

(26) MH-SI Transmission Parameter Descriptor The MH-SI transmission parameter descriptor is used to indicate transmission parameters of SI. The MH-SI transmission parameter descriptor may be located at MH-BIT.

(27) MH-broadcaster name descriptor The MH-broadcaster name descriptor describes the name of a broadcaster. The MH-broadcaster name descriptor may be located at MH-BIT.

(28) MH-Service Descriptor The MH-Service Descriptor represents the organization channel name and its operator name together with the service type and type code. The MH-Service Descriptor may be placed in the MH-SDT.

(29) IP Data Flow Descriptor The IP data flow descriptor provides information on IP data flows that constitute a service. The IP data flow descriptor may be located at MH-SDT.

(30) MH-CA Activation Descriptor The MH-CA activation descriptor describes activation information for activating a CAS program on a CAS basis. The MH-CA activation descriptor may be located in MPT or CAT (CA).

(31) MH-Type Descriptor The MH-Type descriptor indicates the type of file transmitted by the application transmission method. The MH-Type descriptor may be placed in the DAM table.

(32) MH-Info Descriptor The MH-Info descriptor describes information on an MPU or an item. The MH-Info descriptor may be placed in the DAM table.

(33) MH-Expire Descriptor The MH-Expire descriptor describes the expiration date of an item. The MH-Expire descriptor may be placed in the DAM table.

(34) MH-Compression Type Descriptor The MH-Compression Type Descriptor means that the item to be transmitted is compressed, and indicates the compression algorithm and the number of bytes of the item before compression. The MH-Compression Type descriptor may be placed in the DAM table.

(35) MH-Data Coding Method Descriptor The MH-Data Coding Method Descriptor is used to identify the data coding method. The MH-data coding scheme descriptor may be located in the MPT.

(36) UTC-NPT Reference Descriptor The UTC-NPT reference descriptor is used to convey the relationship between NPT (Normal Play Time) and UTC. The UTC-NPT reference descriptor may be located in the EMT.

(37) Event Message Descriptor The event message descriptor conveys information about event messages in general. Event message descriptors may be placed in the EMT.

(38) MH-Local Time Offset Descriptor The MH-Local Time Offset Descriptor is used when summer time has a fixed offset value between the actual time (e.g., UTC + 9 hours) and the display time to the human system. The MH-local time offset descriptor may be located at the MH-TOT.

(39) MH-Component Group Descriptor The MH-Component Group Descriptor defines and identifies the combination of components in an event. The MH-Component Group Descriptor may be placed in the MH-EIT.

(40) MH-Logo Transmission Descriptor The MH-logo transmission descriptor is used to describe a simple logo string, pointing to a logo in the CDT format, and the like. The MH-logo transmission descriptor may be located at the MH-SDT.

(41) MPU Extended Time Stamp Descriptor The MPU Extended Time Stamp Descriptor provides the decoding time of the access unit in the MPU. The MPU Extended Timestamp Descriptor may be placed in the MPT.

(42) MPU Download Content Descriptor The MPU download content descriptor is used to describe attribute information of content downloaded using the MPU. The MPU download content descriptor may be located at the MH-SDTT.

(43) MH-Network Download Content Descriptor The MH-Network Download Content Descriptor is used to describe attribute information of content downloaded using a network. The MH-Network Download Content Descriptor may be located at the MH-SDTT.

(44) MH-Application Descriptor The MH-Application Descriptor describes the information of an application. The MH-application descriptor may be located at the MH-AIT.

(45) MH-Transmission Protocol Descriptor The MH-Transmission Protocol Descriptor is used to indicate transmission protocol designations such as broadcasting and communication, and to indicate location information of an application dependent on the transmission protocol. The MH-transmission protocol descriptor may be located at the MH-AIT.

(46) MH-Simple Application Location Descriptor The MH-Simple Application Location Descriptor is described to indicate the details of the application acquisition destination. The MH-simple application location descriptor may be located at the MH-AIT.

(47) MH-Application Boundary Authority Setting Descriptor The MH-application boundary authority setting descriptor is described to set an application boundary and to set the authority of broadcast resource access for each area (URL). The MH-application boundary authority setting descriptor may be arranged in the MH-AIT.

(48) MH-Activation Priority Information Descriptor The MH-Activation Priority Information Descriptor is described to specify the activation priority of the application. The MH-activation priority information descriptor may be located in the MH-AIT.

(49) MH-Cache Information Descriptor MH-Cache Information Descriptor is described to be used for cache control in the case of caching and holding the resources constituting the application when reuse of the application is assumed. . The MH-cache information descriptor may be located at the MH-AIT.

(50) MH-Stochastic Application Delay Descriptor MH-Stochastic Application Delay Descriptor is to delay application control timing by stochastically set delay amount, assuming load distribution of server accesses for application acquisition. Describe in The MH-probabilistic application delay descriptor may be located at the MH-AIT.

(51) Link Destination PU Descriptor The link destination PU descriptor describes another presentation unit that may transition from the presentation unit (PU). The link destination PU descriptor may be arranged in the DCC table.

(52) Lock Cache Specification Descriptor The lock cache specification descriptor describes the specification of the file to be cached and locked in the presentation unit. The lock cache specification descriptor may be located in the DCC table.

(53) Unlock Cache Specification Descriptor The unlock cache specification descriptor describes the specification of the file to be unlocked among the files locked in the presentation unit. The unlock cache specification descriptor may be placed in the DCC table.

(54) Descriptor set by the business operator Other than this, it is possible to prepare a descriptor set by the service business operator etc. on its own.

<Relationship between data transmission and each control information in MMT method>
Here, with reference to FIG. 6E, the relationship between data transmission and a typical table in the broadcast system to which the broadcast receiving apparatus 100 of the present embodiment corresponds will be described.

  In a broadcast system to which the broadcast receiving apparatus 100 of this embodiment corresponds, data transmission can be performed through a plurality of routes such as TLV streams via a broadcast transmission channel and IP data flows via a communication line. The TLV stream includes TLV-SI such as TLV-NIT and AMT, and IP data flow which is a data flow of IP packet. Included within the IP data flow are video assets including a series of video MPUs and audio assets including a series of audio MPUs. Similarly, the IP data flow may include subtitle assets including a series of subtitles MPU, character super assets including a series of character super MPUs, data assets including a series of data MPUs, and the like. These various assets are associated in units of “package” by the MPT (MMT package table) stored and transmitted in the PA message. Specifically, the package ID (corresponding to the “MMT_package_id_byte” parameter shown in FIG. 17 described later), the asset ID of each asset included in the package (corresponding to the “asset_id_byte” parameter illustrated in FIG. 17 described later), and the MPT The association is performed by describing.

The assets that make up the package can be only assets in the TLV stream, but can also include assets transmitted in IP data flows of communication lines, as shown in FIG. 6E. This includes the location information of each asset included in the package (corresponding to “MMT_general_location_info ()” shown in FIG. 17 described later) in the MPT, and the broadcast receiving apparatus 100 of this embodiment refers to each asset reference destination. It can be realized by making it comprehensible. Specifically, by changing the value of the “MMT_general_location_infonolocation_type” parameter placed in the location information,
(1) Data multiplexed in the same IP data flow as MPT (location_type = 0x00)
(2) Data multiplexed to IPv4 data flow (location_type = 0x01)
(3) Data multiplexed to IPv6 data flow (location_type = 0x02)
(4) Data multiplexed to broadcast MPEG2-TS (location_type = 0x03)
(5) Data multiplexed in the IP data flow in the MPEG2-TS format (location_type = 0x04)
(6) Data located at the specified URL (location_type = 0x05)
Thus, the broadcast receiving apparatus 100 can refer to various data transmitted through various transmission paths.

  Among the aforementioned reference destinations, (1) is, for example, an IP data flow received via a digital broadcast signal received by the tuner / demodulator 131 of the broadcast receiving apparatus 100 of FIG. 7A described later. When MPT is included in the IP data flow on the communication line side and transmitted, the IP data flow may be received by the LAN communication unit 121 described later in (1) via the communication line. Also, (2), (3), (5) and (6) are IP data flows received by the LAN communication unit 121 described later via the communication line. Also, for example (4), as in the broadcast receiving apparatus 800 of the second embodiment shown in FIG. 24 described later, a receiving function for receiving a digital broadcast signal using the MMT method, and a digital broadcast using the MPEG2-TS method In the case of a broadcast reception apparatus having both of the reception functions for receiving signals, digital broadcast using the MPEG2-TS system based on location information ("MMT_general_location_info ()") of MPT included in digital broadcast signals using the MMT system It can be used when referring to data multiplexed in the MPEG2-TS received by the reception function that receives a signal.

  Although the data constituting the "package" is designated in this manner, in the broadcast system to which the broadcast receiving apparatus 100 of the present embodiment corresponds, a series of data in the "package" unit is "service" in digital broadcasting. Treat as.

  Furthermore, the presentation time information (corresponding to the “mpu_presentation_time” parameter shown in FIG. 13B described later) of each MPU designated by the MPT is described in the MPT, and a plurality of MPT designated by using the presentation time information The MPU can be presented (displayed, output, etc.) in conjunction with a clock based on NTP which is time information in UTC notation. The presentation control of various data using a clock based on the NTP will be described later.

  The data transmission method of this embodiment shown in FIG. 6E further has the concept of "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 MH-EIT, the duration is calculated from the disclosure time (corresponding to “start_time” parameter shown in FIG. 21 described later) stored in MH-EIT. A series of data included in a period (corresponding to a “duration” parameter shown in FIG. 21 described later) is data included in the concept of the “event”. In MH-EIT, various processes (for example, processing of program guide generation, control of recording reservation and viewing reservation, copyright management processing such as temporary storage, etc.) are performed in the "event" unit in the broadcast receiving apparatus 100 of this embodiment. It can be used for

[Hardware configuration of broadcast receiving apparatus]
FIG. 7A is a block diagram showing an example of the internal configuration of the broadcast receiving apparatus 100. As shown in FIG. The broadcast receiving apparatus 100 includes a main control unit 101, a system bus 102, a ROM 103, a RAM 104, a storage (storage) unit 110, a LAN communication unit 121, an expansion interface unit 124, a digital interface unit 125, a tuner / demodulation unit 131, and a separation unit 132. , Video decoder 141, video color gamut converter 142, audio decoder 143, character super decoder 144, subtitle decoder 145, subtitle synthesizer 146, subtitle color gamut converter 147, data decoder 151, cache unit 152, application controller 153, A browser unit 154, an application color gamut conversion unit 155, a sound source unit 156, a video synthesis unit 161, a monitor unit 162, a video output unit 163, an audio synthesis unit 164, a speaker unit 165, an audio output unit 166, and an operation input unit 170. Be done.

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

  A ROM (Read Only Memory) 103 is a non-volatile memory in which a basic operating program such as an operating system and other operating programs are stored, and for example, a rewritable ROM such as an EEPROM (Electrically Erasable Programmable ROM) or a flash ROM. Used. The ROM 103 may store operation setting values necessary for the operation of the broadcast receiving apparatus 100. A random access memory (RAM) 104 serves as a work area when 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 use a partial storage area in the storage (storage) unit 110 instead of the independent configuration as shown in FIG. 7A.

  The storage (storage) unit 110 stores an operation program and operation setting values of the broadcast receiving apparatus 100, personal information of a user of the broadcast receiving apparatus 100, and the like. In addition, it is possible to store an operation program downloaded via the Internet 200, various data created by the operation program, and the like. In addition, it is possible to store contents such as moving pictures, still pictures, sounds, etc. acquired from broadcast waves or downloaded via the Internet 200. All or part of the functions of the ROM 103 may be replaced by a partial area of the storage unit 110. Further, the storage (storage) unit 110 needs to hold stored information even when the broadcast receiving apparatus 100 is not supplied with power from the outside. Therefore, for example, a device such as a nonvolatile semiconductor element memory such as a flash ROM or a solid state drive (SSD), a magnetic disk drive such as a hard disc drive (HDD), or the like is used.

  It is assumed that each of the operation programs stored in the ROM 103 and the storage (storage) unit 110 can be added, updated, and function expanded by download processing from each server apparatus on the Internet 200.

  A LAN (Local Area Network) communication unit 121 is connected to the Internet 200 via the router device 200r, and transmits / receives data to / from each server device on the Internet 200 and other communication devices. In addition, acquisition of an MMT data string (or a part thereof) of a program transmitted via a communication line is also performed. The connection with the router device 200r 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, an infrared communication unit, and the like.

  The tuner / demodulator 131 receives a broadcast wave transmitted from the radio tower 300 t through the antenna 100 a and tunes (tunes) to a channel of a service desired by the user based on the control of the main controller 101. Furthermore, the tuner / demodulation unit 131 demodulates the received broadcast signal to obtain an MMT data string. Although the example shown in FIG. 7A exemplifies a configuration in which there is one tuner / demodulator, the broadcast receiving apparatus 100 includes the tuner / demodulator for the purpose of simultaneous display of multiple screens, back program recording, and the like. It is good also as composition equipped with two or more.

  The separation unit 132 is an MMT decoder, and based on the control signal in the input MMT data sequence, the video data sequence, the audio data sequence, the character super data sequence, the subtitle data sequence, etc. which are real-time presentation elements are each video decoder 141 , Audio decoder 143, character super decoder 144, subtitle decoder 145, and the like. The data input to the separation unit 132 is an MMT data string transmitted via a broadcast transmission line and demodulated by the tuner / demodulation unit 131, or MMT data transmitted via a communication line and received by the LAN communication unit 121. It may be a column. Also, the separation unit 132 reproduces the multimedia application and file-related data that is a component of the multimedia application, and the cache unit 152 temporarily stores the same. Further, the separating unit 132 extracts general-purpose data and outputs it to the data decoder 151 in order to use it for streaming data to an application or data used by a player presenting data other than video and audio subtitles. In addition, the separation unit 132 may perform error correction, access restriction control, and the like on the input MMT data string based on the control of the main control unit 101.

  The video decoder 141 decodes the video data string input from the separation unit 132 and outputs video information. The video color gamut conversion unit 142 subjects the video information decoded by the video decoder 141 to color space conversion processing as necessary for video combining processing in the video combining unit 161. The audio decoder 143 decodes the audio data string input from the separation unit 132 and outputs audio information. In addition, even if streaming data such as MPEG-Dynamic Adaptive Streaming over HTTP (MPEG-DASH) format acquired from the Internet 200 via the LAN communication unit 121 is input to the video decoder 141 and the audio decoder 143, for example. good. In addition, a plurality of video decoders 141, video color gamut converters 142, audio decoders 143, and the like may be provided to simultaneously decode a plurality of types of video data strings and audio data strings.

  The character super decoder 144 decodes the character super data string input from the separation unit 132 and outputs character super information. The subtitle decoder 145 decodes the subtitle data string input from the separating unit 132 and outputs subtitle information. The subtitle information output from the subtitle decoder 145 and the subtitle information output from the subtitle decoder 144 are subjected to combining processing in the subtitle combining unit 146, and further, in the subtitle gamut conversion unit 147, in the video combining unit 161. Color space conversion processing is performed as necessary for video composition processing. In the present embodiment, among services mainly provided with text information, which are presented simultaneously with the video of the broadcast program, those related to the contents of the video are called subtitles, and the other ones are called the character super Do. Also, when they are not distinguished, they are collectively referred to as subtitles.

  The browser unit 154 controls the multimedia information file acquired from the server apparatus on the Internet 200 via the cache unit 152 or the LAN communication unit 121 or the file system data which is the component thereof in the control information or LAN included in the MMT data string. It is presented in accordance with an instruction of the application control unit 153 which interprets control information acquired from the server apparatus on the Internet 200 via the communication unit 121. The multimedia application file may be a Hyper Text Markup Language (HTML) document, a Broadcast Markup Language (BML) document, or the like. The application information output from the browser unit 154 is further subjected to color space conversion processing as necessary for the video combining processing in the video combining unit 161 in the application gamut conversion unit 155. The browser unit 154 also plays back the application voice information by operating the sound source unit 156.

  The video synthesis unit 161 inputs the video information output from the video color gamut conversion unit 142, the subtitle information output from the subtitle color gamut conversion unit 147, the application information output from the application gamut conversion unit 155, etc. Perform processing such as selection and / or superposition. The video combining unit 161 includes a video RAM (not shown), and the monitor unit 162 and the like are driven based on the video information and the like input to the video RAM. In addition, the video synthesis unit 161 is an EPG (Electronic Program Guide) created based on the information such as the scaling process and the MH-EIT included in the MMT-SI as needed based on the control of the main control unit 101. It performs superimposing processing of screen information, etc. The monitor unit 162 is a display device such as a liquid crystal panel, for example, and provides the user of the broadcast receiving apparatus 100 with the video information selected and / or superimposed by the video combining unit 161. The video output unit 163 is a video output interface that outputs the video information that has been selected and / or superimposed by the video combining unit 161.

  In addition, the presentation function of the broadcast receiving apparatus 100 of a present Example shall be provided with a logical plane structure, in order to display a multimedia service as a provider's intention. FIG. 7B shows an example of the configuration of the logical plane structure provided in the presentation function of the broadcast receiving apparatus 100 of this embodiment. In the logical plane structure, a character super plane for displaying a character super is arranged in the forefront, and a subtitle plane for displaying a subtitle is arranged in the next layer. In the third layer, a multimedia plane for displaying broadcast video and multimedia applications or composite video thereof is disposed, and a background plane is disposed on the back. In the subtitle synthesizing unit 146 and the video synthesizing unit 161, drawing of the character super information on the character super plane, drawing of the subtitle information on the subtitle plane, and drawing on the multimedia plane such as video information and application information are performed. Also, the background color is drawn on the background plane based on LCT and the like included in MMT-SI. A plurality of third layer multimedia planes can be prepared in accordance with the number of video decoders 141. However, even when there are a plurality of multimedia planes, the application information and the like output from the application gamut conversion unit 155 are output only to the foremost multimedia plane.

  The voice synthesis unit 164 inputs the voice information output from the voice decoder 143 and the application voice information reproduced by the sound source unit 156, and performs processing such as selection and / or mixing as appropriate. The speaker unit 165 provides the user of the broadcast receiving apparatus 100 with the voice information selected and / or mixed by the voice synthesis unit 164. The voice output unit 166 is a voice output interface that outputs voice information selected and / or mixed by the voice synthesis unit 164.

  The extension interface unit 124 is an interface group for extending the function of the broadcast receiving apparatus 100. In the present embodiment, the extension interface unit 124 includes an analog video / audio interface, a USB (Universal Serial Bus) interface, a memory interface, and the like. Do. The analog video / audio interface performs input of analog video signals / audio signals from an external video / audio output device, output of analog video signals / audio signals to an external video / audio input device, and the like. The USB interface is connected to a PC or the like to transmit and receive data. The HDD may be connected to record a broadcast program or content. Also, a keyboard or other USB device may be connected. The memory interface connects a memory card and other memory media to transmit and receive data.

  The digital interface unit 125 is an interface that outputs or inputs encoded digital video data and / or digital audio data. The digital interface unit 125 can output the MMT data string obtained by demodulation by the tuner / demodulator 131, the MMT data string acquired via the LAN communication unit 121, or the mixed data of the MMT data strings as it is. It shall be. Further, the MMT data string input from the digital interface unit 125 may be controlled to be input to the separation unit 132. Output of digital content stored in the storage (storage) unit 110 or storage of digital content in the storage (storage) unit 110 may be performed via the digital interface unit 125.

  The digital interface unit 125 is a DVI terminal, an HDMI (registered trademark) terminal, a Display Port (registered trademark) terminal, etc., and data is output or input in a format compliant with the DVI specification, the HDMI specification, the Display Port specification, etc. It is good. The data may be output or input in the form of serial data conforming to the IEEE 1394 specification or the like. Also, it may be configured as an IP interface that performs digital interface output via hardware such as Ethernet (registered trademark) or wireless LAN. In this case, the digital interface unit 125 and the LAN communication unit 121 may share the hardware configuration.

  The operation input unit 170 is an instruction input unit for inputting an operation instruction to the broadcast receiving apparatus 100, and in the present embodiment, a remote control receiving unit for receiving a command transmitted from a remote controller (not shown) and a button switch are arranged. It shall be composed of operation keys. Only one of them may be used. In addition, the operation input unit 170 may be replaced by a touch panel overlapped with the monitor unit 162. Alternatively, a keyboard connected to the expansion interface unit 124 may be used. The remote control, not shown, may be replaced by a portable information terminal 700 having a remote control command transmission function.

  As described above, when the broadcast receiving apparatus 100 is a television receiver or the like, the video output unit 163 and the audio output unit 166 are not essential components of the present invention. In addition to the television receiver, 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), a tablet terminal, a navigation device, a game machine or the like provided with a digital broadcast reception function and a broadcast communication cooperation function. When the broadcast receiving apparatus 100 is a DVD recorder, an HDD recorder, an STB or the like, the monitor unit 162 and the speaker unit 165 may not be provided. By connecting an external monitor and an external speaker to the video output unit 163 and the audio output unit 166 or the digital interface unit 125, an operation similar to that of the broadcast receiving apparatus 100 of this embodiment can be performed.

[System configuration of clock synchronization / presentation synchronization of broadcast receiver]
FIG. 7C is an example of a system configuration of clock synchronization / presentation synchronization in a broadcasting system to which the broadcast receiving apparatus 100 of this embodiment corresponds. In the broadcast system of the present embodiment, the UTC is transmitted from the broadcast transmission system to the receiver (the broadcast receiving apparatus 100 of the present embodiment, etc.) in the NTP time stamp format of 64-bit length. In the NTP timestamp format, “seconds or more” of UTC is represented by 32 bits, and “less than a second” is represented by 32 bits. However, in practice, it is difficult to reproduce one second with 32-bit precision. For this reason, as a system clock for synchronizing a video system and a system clock for operating an NTP clock, for example, “2 to the 24 th power” Hz (about 16.8 MHz) as shown in the figure. The frequency of may be used. In consideration of the fact that the system clock in the conventional broadcast system is 27 MHz and that the hardware configuration of the receiver can be easily constructed, etc. It is desirable to adopt the power of the frequency as the system clock.

  When the system clock is set to the power of 2 from 2 to 24 as described above on the broadcast sending system and receiver, reception from the broadcast sending system is performed. The lower 8 to 4 bits not referred to in the PLL (Phase Locked Loop) system for reproducing the system clock or NTP style clock in the NTP time stamp format transmitted to the machine side are “0” or “1”. It may be fixed to That is, if the system clock is "2.sup.n" Hz (in the example of FIG. 7C, n = 24), the lower "32-n" bits in the NTP timestamp format are fixed to "0" or "1". You may do so. Alternatively, on the receiver side, processing may be performed to ignore the lower “32-n” bits of the NTP timestamp format.

  On the broadcast transmission system side, when the time information in NTP format is obtained from the outside, the PLL system is configured with a 32 + n-bit counter by VCO (Voltage Controlled Oscillator) of 2 n Hz Hz, and the externally supplied time information Implement a synchronized delivery system clock. In addition, the entire signal processing system is operated in synchronization with a system clock of “2 n power” Hz. Furthermore, the output of the transmission system clock is periodically transmitted to the receiver side via the broadcast transmission line as time information in NTP long format.

  On the receiver side, the time information in the NTP long format is received through the broadcast transmission line, and the reception system clock is reproduced by the PLL system based on the "2 nth power" Hz VCO as in the broadcast transmission system side. Thus, the reception system clock becomes a clock synchronized with the broadcast transmission system side. In addition, by operating the signal processing system of the receiver in synchronization with the system clock of 2 n Hz, clock synchronization between the broadcast sending system and the receiver is realized, and stable signal reproduction is possible. Become. Further, the decoding time and the presentation time for each presentation unit of the video / audio signal are set on the broadcast transmission system side based on the time information of the NTP format. Here, an MPU time stamp descriptor shown in FIG. 13B described later is stored in the MPT stored in the PA message transmitted by the broadcast signal. The “mpu_sequence_number (MPU sequence number)” parameter in the MPU time stamp descriptor in FIG. 13B indicates the sequence number of the MPU describing the time stamp, and the “mpu_presentation_time (MPU presentation time)” parameter indicates the MPU presentation time as a 64-bit NTP. It shows in the time stamp format. Therefore, the receiver can control the presentation (display, output, etc.) timing of each video signal, audio signal, subtitle, superimpose, etc. MPU by referring to the MPU time stamp descriptor stored in the MPT. .

  In addition, when focusing on the control of the decoding timing and presentation timing for each presentation unit of the above-mentioned video / audio signal etc., synchronization of the video / audio signal is also performed by a clock of about 2 to 16 Hz (about 65.5 KHz). In this case, the lower 16 bits of the NTP time stamp format described in the MPU time stamp descriptor or the like may not be referred to. That is, when using a clock of 2 m Hz generated by dividing the system clock or the like for controlling the decoding timing and presentation timing, the lower order of the NTP time stamp format described in the MPU time stamp descriptor etc. The "32-m" bit may not be referenced. Therefore, the lower "32-m" bit of the NTP time stamp format described in the MPU time stamp descriptor or the like may be fixed to "0" or "1".

[Software configuration of broadcast receiver]
FIG. 7D is a software configuration diagram of the broadcast receiving apparatus 100 of the present embodiment, showing the software configuration of the ROM 103, the RAM 104, and the storage (storage) unit 110. In the present embodiment, the basic operation program 1001 and the other operation programs are stored in the ROM 103, and the storage function unit 110 stores the reception function program 1002 and the other operation programs. In addition, the storage (storage) unit 110 stores a content storage area 1200 for storing contents such as moving images, still images and sounds, and authentication for storing authentication information and the like necessary for accessing an external portable terminal device or each server device. An information storage area 1300 and various information storage areas for storing various other information are provided.

  The basic operation program 1001 stored in the ROM 103 is expanded in the RAM 104, and the main control unit 101 further executes the expanded basic operation program to configure a basic operation execution unit 1101. Similarly, the reception function program 1002 stored in the storage (storage) unit 110 is expanded in the RAM 104, and the main control unit 101 further executes the expanded reception function program to configure the reception function execution unit 1102. Do. In addition, the RAM 104 is provided with a temporary storage area for temporarily holding data created at the time of execution of each operation program as needed.

  In the following, to simplify the description, the main control unit 101 executes the process of controlling each operation block by expanding the basic operation program 1001 stored in the ROM 103 to the RAM 104 and executing the basic operation program. The unit 1101 is described as performing control of each operation block. The same description is made for other operation programs.

  The reception function execution unit 1102 controls each operation block of the broadcast reception apparatus 100 in order to reproduce components such as video and audio transmitted by the broadcast system of the present embodiment. In particular, the transport processing unit 1102a mainly controls the MMT decoder function of the separation unit 132, and distributes a video data string, an audio data string, and the like separated from the MMT data string to the corresponding decoding processing units. The AV decoding processing unit 1102b mainly controls the video decoder 141, the audio decoder 143, and the like. The application processing unit 1102 c mainly controls the cache unit 152, the application control unit 153, the browser unit 154, and the sound source unit 156. The character super processing unit 1102 d mainly controls the character super decoder 144. The subtitle processing unit 1102 e mainly controls the subtitle decoder 151. The general-purpose data processing unit 1102 f mainly controls the data decoder 151. The EPG generation unit 1102 g interprets the description content such as MH-EIT included in the MMT-SI and generates an EPG screen. The presentation processing unit 1102 h is configured to use the video color gamut conversion unit 142, the subtitle synthesis unit 146, the subtitle color gamut conversion unit 147, the application gamut conversion unit 155, the video synthesis unit 161, and the voice synthesis unit 164 based on the logical plane structure. Control.

  Each of the operation programs may be stored in advance in the ROM 103 and / or the storage unit 110 at the time of product shipment. After the product is shipped, it may be acquired from the other application server 500 or the like on the Internet 200 via the LAN communication unit 121. In addition, the respective operation programs stored in a memory card, an optical disk or the like may be acquired via the expansion interface unit 124 or the like.

[Station server configuration]
FIG. 8 is a block diagram showing an example of the internal configuration of the broadcast station server 300. As shown in FIG. The broadcast station server 300 includes a main control unit 301, a system bus 302, a RAM 304, a storage unit 310, a LAN communication unit 321, and a digital broadcast signal transmission unit 360.

  The main control unit 301 is a microprocessor unit that controls the entire broadcast station server 300 according to a predetermined operation program. A system bus 302 is a data communication path for transmitting and receiving data between the main control unit 301 and each operation block in the broadcast station server 300. A RAM 304 serves as a work area when each operation program is executed.

  The storage unit 310 stores a basic operation program 3001, a broadcast content management / distribution program 3002 and a broadcast content delivery program 3003, and further includes a broadcast content storage area 3200 and a metadata storage area 3300. The broadcast content storage area 3200 stores program content and the like of each broadcast program broadcasted by the broadcast station. The metadata storage area 3300 stores metadata such as a program title of each broadcast program, a program ID, a program summary, performers, broadcast date and time, copy control information related to each program content, and the like.

  Also, the basic operation program 3001 and the broadcast content management / distribution program 3002 and the broadcast content delivery program 3003 stored in the storage unit 310 are expanded on the RAM 304, and the main control unit 301 executes the expanded programs. Thus, the basic operation execution unit 3101, the broadcast content management / distribution execution unit 3102, and the broadcast content transmission execution unit 3103 are configured.

  In the following, in order to simplify the description, the main control unit 301 executes processing of controlling each operation block by developing the basic operation program 3001 stored in the storage unit 310 in the RAM 304 and executing the program. The operation execution unit 3101 is described as performing control of each operation block. The same description is made for other operation programs.

  The broadcast content management / distribution execution unit 3102 manages the program content and the like and metadata of each broadcast program stored in the broadcast content storage area 3200 and the metadata storage area 3300, and the program content and the like of each broadcast program. Control when providing metadata to a service provider based on a contract. Furthermore, when the broadcast content management / distribution execution unit 3102 provides the service provider with program content and the like and metadata of each broadcast program, the service provider based on the contract as necessary. An authentication process of the server 400 may be performed.

  The broadcast content transmission execution unit 3103 broadcasts the program content of the broadcast program stored in the broadcast content storage area 3200, the program title of the broadcast program stored in the metadata storage area 3300, the program ID, the copy control information of the program content, etc. The time schedule management etc. at the time of transmitting the MMT data sequence which it contains from the radio tower 300t via the digital broadcast signal transmission part 360 are performed.

  The LAN communication unit 321 is connected to the Internet 200 and communicates with the service provider server 400 or the like on the Internet 200. The LAN communication unit 321 includes an encoding circuit, a decoding circuit, and the like. The digital broadcast signal transmission unit 360 modulates an MMT data string composed of video data strings such as program content of each broadcast program stored in the broadcast content storage area 3200, audio data strings, program information data strings, etc. , It transmits as a digital broadcast wave via the radio wave tower 300t.

[Configuration of service provider server]
FIG. 9 is a block diagram showing an example of the internal configuration of the service provider server 400. As shown in FIG. The service provider server 400 includes a main control unit 401, a system bus 402, a RAM 404, a storage unit 410, and a LAN communication unit 421.

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

  The storage unit 410 stores a basic operation program 4001, a video content management / distribution program 4002 and an application management / distribution program 4004, and further, a video content storage area 4200, a metadata storage area 4300, an application storage area 4400, a user information storage An area 4500 is provided. The video content storage area 4200 stores program content of the broadcast program provided from the broadcast station server 300 as video content. In addition, it stores video content and the like produced by the service provider. The metadata storage area 4300 stores each metadata provided from the broadcast station server 300, metadata about video content produced by the service provider, and the like. The application storage area 4400 stores, for example, various applications for realizing a service linked to a broadcast program for distributing in response to a request from each television receiver. The user information storage area 4500 stores information (personal information, authentication information, and the like) on the user permitted to access the service provider server 400.

  Also, the basic operation program 4001 and the video content management / distribution program 4002 and the application management / distribution program 4004 stored in the storage unit 410 are expanded on the RAM 404 respectively, and the main control unit 401 further expands the expanded basic operation program and video. By executing the content management / distribution program and the application management / distribution program, a basic operation execution unit 4101, a video content management / distribution execution unit 4102, and an application management / distribution execution unit 4104 are configured.

  In the following, in order to simplify the description, the main control unit 401 performs processing of controlling each operation block by developing the basic operation program 4001 stored in the storage unit 410 in the RAM 404 and executing the program. The operation execution unit 4101 is described as performing control of each operation block. The same description is made for other operation programs.

  The video content management / distribution execution unit 4102 acquires the program content and the like of the broadcast program from the broadcast station server 300 and metadata, the video content and the like stored in the video content storage area 4200 and the metadata storage area 4300, and each metadata , And control of distribution of the video content and the like and each metadata to each television receiver. Furthermore, the video content management / distribution execution unit 4102 carries out an authentication process and the like of each television receiver as necessary when distributing the video content and the like and each metadata to the television receiver. You may go. In addition, the application management / distribution execution unit 4104 performs management of each application stored in the application storage area 4400 and control when each application is distributed according to a request from each television receiver. Furthermore, when distributing the respective applications to the respective television receivers, the application management / distribution execution unit 4104 may perform, for example, an authentication process of the respective television receivers as necessary.

  The LAN communication unit 421 is connected to the Internet 200, and communicates with the broadcast receiving apparatus 100 via the broadcast station server 300 on the Internet 200 and the router device 200r. The LAN communication unit 421 includes a coding circuit, a decoding circuit, and the like.

[Hardware configuration of mobile information terminal]
FIG. 10A is a block diagram showing an example of the internal configuration of portable information terminal 700. The portable information terminal 700 includes a main control unit 701, a system bus 702, a ROM 703, a RAM 704, a storage unit 710, a communication processing unit 720, an expansion interface unit 724, an operation unit 730, an image processing unit 740, an audio processing unit 750, and a sensor unit 760. Composed of

  The main control unit 701 is a microprocessor unit that controls the entire portable information terminal 700 in accordance with a predetermined operation program. A system bus 702 is a data communication path for transmitting and receiving data between the main control unit 701 and each operation block in the portable information terminal 700.

  The ROM 703 is a memory in which a basic operation program such as an operating system or the like and other operation programs are stored, and for example, a rewritable ROM such as an EEPROM or a flash ROM is used. A RAM 704 serves as a work area when executing a basic operation program and other operation programs. The ROM 703 and the RAM 704 may be integrated with the main control unit 701. Further, the ROM 703 may use a partial storage area in the storage unit 710 instead of the independent configuration as shown in FIG. 10A.

  Storage unit 710 stores an operation program and operation setting value of portable information terminal 700, personal information of the user of portable information terminal 700, and the like. In addition, it is possible to store an operation program downloaded via the Internet 200, various data created by the operation program, and the like. In addition, it is also possible to store contents such as moving pictures, still pictures and sounds downloaded via the Internet 200. A part of the storage unit 710 may replace all or part of the functions of the ROM 703. In addition, the storage unit 710 needs to hold stored information even when power is not supplied to the portable information terminal 700 from the outside. Therefore, for example, a device such as a nonvolatile semiconductor element memory such as a flash ROM or an SSD, or a magnetic disk drive such as an HDD is used.

  It is assumed that the respective operation programs stored in the ROM 703 and the storage unit 710 can be added, updated, and function expanded by download processing from each server apparatus on the Internet 200.

  The communication processing unit 720 includes a LAN communication unit 721, a mobile telephone network communication unit 722, and an NFC communication unit 723. The LAN communication unit 721 is connected to the Internet 200 via the router device 200r and the access point 200a, and transmits / receives data to / from each server device on the Internet 200 and other communication devices. The connection with the router device 200 r and the access point 200 a is performed by wireless connection such as Wi-Fi (registered trademark). The mobile telephone network communication unit 722 performs telephone communication (call) and data transmission / reception by wireless communication with the base station 600b of the mobile telephone communication network. The NFC communication unit 723 performs wireless communication when in close proximity to the corresponding reader / writer. The LAN communication unit 721, the mobile telephone network communication unit 722, and the NFC communication unit 723 each include an encoding circuit, a decoding circuit, an antenna, and the like. The communication processing unit 720 may further include another communication unit such as a BlueTooth (registered trademark) communication unit or an infrared communication unit.

  The extension interface unit 724 is an interface group for extending the function of the portable information terminal 700, and in this embodiment, is configured by a video / audio interface, a USB interface, a memory interface, and the like. The video / audio interface performs input of a video signal / audio signal from an external video / audio output device, output of a video signal / audio signal to an external video / audio input device, and the like. The USB interface is connected to a PC or the like to transmit and receive data. Also, a keyboard or other USB device may be connected. The memory interface connects a memory card and other memory media to transmit and receive data.

  The operation unit 730 is an instruction input unit for inputting an operation instruction to the portable information terminal 700. In this embodiment, the operation unit 730 includes a touch panel 730t disposed overlapping on the display unit 741 and an operation key 730k in which button switches are arranged. It shall be. Only one of them may be used. The mobile information terminal 700 may be operated using a keyboard or the like connected to the extended interface unit 724. The mobile information terminal 700 may be operated using a separate terminal device connected by wired communication or wireless communication. That is, the operation of the portable information terminal 700 may be performed from the broadcast receiving apparatus 100. The touch panel function may be included in the display unit 741.

  The image processing unit 740 includes a display unit 741, an image signal processing unit 742, a first image input unit 743, and a second image input unit 744. The display unit 741 is a display device such as a liquid crystal panel, for example, and provides the user of the portable information terminal 700 with the image data processed by the image signal processing unit 742. The image signal processing unit 742 includes a video RAM (not shown), and the display unit 741 is driven based on the image data input to the video RAM. In addition, the image signal processing unit 742 has a function of performing format conversion, superimposing processing of a menu or another OSD (On Screen Display) signal, and the like as necessary. The first image input unit 743 and the second image input unit 744 convert the light input from the lens into an electrical signal using an electronic device such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) sensor. , And a camera unit for inputting image data of surroundings and an object.

  The audio processing unit 750 includes an audio output unit 751, an audio signal processing unit 752, and an audio input unit 753. The audio output unit 751 is a speaker, and provides the audio signal processed by the audio signal processing unit 752 to the user of the portable information terminal 700. The voice input unit 753 is a microphone, which converts a user's voice or the like into voice data and inputs the voice data.

  The sensor unit 760 is a sensor group for detecting the state of the portable information terminal 700, and in the present embodiment, the GPS reception unit 761, the gyro sensor 762, the geomagnetic sensor 763, the acceleration sensor 764, the illuminance sensor 765, and the proximity sensor 766. Composed of With these sensors, it is possible to detect the position, tilt, direction, movement, and brightness of the surrounding, the proximity of surrounding objects, and the like of the portable information terminal 700. The portable information terminal 700 may further include another sensor such as an atmospheric pressure sensor.

  The portable information terminal 700 may be a mobile phone, a smart phone, a tablet terminal or the like. It may be a PDA (Personal Digital Assistants) or a notebook PC. In addition, it may be a digital still camera, a video camera capable of capturing moving images, a portable game machine, a navigation device, or the like, or other portable digital devices.

  Although the configuration example of the portable information terminal 700 shown in FIG. 10A includes many components that are not essential to the present embodiment, such as the sensor unit 760, the present embodiment is not limited to these components. There is no loss of the effect of Further, a configuration not shown, such as a digital broadcast reception function and an electronic money settlement function, may be further added.

[Software configuration of mobile information terminal]
FIG. 10B is a software configuration diagram of the portable information terminal 700 of the present embodiment, and shows the configuration of software in the ROM 703, the RAM 704, and the storage unit 710. In the present embodiment, the basic operation program 7001 and other operation programs are stored in the ROM 703, and the cooperation control program 7002 and other operation programs are stored in the storage unit 710. In addition, the storage unit 710 includes a content storage area 7200 for storing contents such as moving pictures, still pictures, and audio, an authentication information storage area 7300 for storing authentication information and the like necessary for accessing the television receiver and each server device. It is assumed that various information storage areas for storing other various information are provided.

  The basic operation program 7001 stored in the ROM 703 is expanded on the RAM 704, and the main control unit 701 further executes the expanded basic operation program to configure a basic operation execution unit 7101. Also, the cooperation control program 7002 stored in the storage unit 710 is similarly expanded in the RAM 704, and the main control unit 701 further executes the expanded cooperation control program to configure the cooperation control execution unit 7102. In addition, the RAM 704 is provided with a temporary storage area for temporarily holding data created at the time of execution of each operation program as needed.

  In the following, to simplify the description, the main control unit 701 executes the processing of controlling each operation block by developing the basic operation program 7001 stored in the ROM 703 in the RAM 704 and executing the basic operation program. The unit 7101 is described as performing control of each operation block. The same description is made for other operation programs.

  The cooperation control execution unit 7102 manages device authentication and connection, transmission and reception of each data, and the like when the portable information terminal 700 performs the cooperation operation with the television receiver. Further, the cooperation control execution unit 7102 has a browser engine function for executing an application interlocked with the television receiver.

  The respective operation programs may be stored in advance in the ROM 703 and / or the storage unit 710 at the time of product shipment. After the product is shipped, it may be acquired from the other application server 500 or the like on the Internet 200 via the LAN communication unit 721 or the mobile telephone network communication unit 722. In addition, the respective operation programs stored in a memory card, an optical disk or the like may be acquired via the expansion interface unit 724 or the like.

[Time control of broadcast receiver]
The broadcast receiving apparatus of this embodiment has two types of time management functions. The first time management function is a time management function based on NTP, as described above with reference to FIG. 7C. The second time management function is a time management function based on the MH-TOT, and is a time managed based on the time information transmitted by the MH-TOT described in FIG. 6B.

  An example of the structure of the time information transmitted by NTP is shown to FIG. 13A. An example of the data structure of the MPU time stamp descriptor is shown in FIG. 13B. The “reference_timestamp” parameter and the “transmit_timestamp” parameter in the NTP format are 64-bit NTP long format time data, and the “mpu_presentation_time” parameter in the MPU timestamp descriptor is also the 64-bit NTP timestamp. It is time data of the form. The NTP long format time data and the NTP time stamp format time data are data representing “second or more” of UTC in 32 bits and “less than a second” in 32 bits. That is, the time information in NTP format can transmit the time information up to "less than a second". Furthermore, since time information in NTP format is UTC notation, it differs from conventional clock management in digital broadcasting, as shown in FIG. It can also be matched with the NTP contained in the signal received on the line).

  On the other hand, the information transmitted by MH-TOT is as follows. It is assumed that the broadcast receiving apparatus 100 can obtain the current date and the Japan Standard Time by the MH-TOT. FIG. 11A shows an example of the data structure of MH-TOT. The broadcast receiving apparatus 100 can obtain the current date and the current time from the “JST_time” parameter of the MH-TOT. The “JST_time” parameter, as shown in FIG. 11B, includes the lower 16 bits of the encoded data of the current date according to Modified Julian Date (MJD), and six Japan Standard Time (JST). Bit 24-bit information represented by Binary-Coded Decimal (BCD) shall be included. The current date can be calculated by performing a predetermined operation on the MJD 16-bit encoded data. Six 4-bit binary coded decimal numbers represent “hours” in two decimal numbers by two 4-bit binary coded decimal numbers, and the decimal number 2 by the next two 4-bit binary decimal numbers The digits represent "minutes", and the last two 4-bit binary numbers represent "seconds" in two decimal digits.

  Therefore, the difference between the time based on NTP and the time based on MH-TOT is that the former NTP is information in UTC notation that can transmit time information up to "less than a second" as described above. The information transmitted by TOT is that the information is up to "seconds" in JST notation.

  The broadcast receiving apparatus 100 according to this embodiment synchronizes the time management function based on NTP which is UTC time information, and decodes the video, audio, subtitle, superimpose, and other presentation data which are contents of the broadcast signal and the display synchronization. Can be used to realize more accurate synchronization processing. Furthermore, by referring to the UTC notation information instead of the clock notation of the broadcasting station, the content of the broadcast signal received by the broadcast signal, which is video, audio, subtitles, superimpose, or other data, is acquired through the communication channel path. It is also possible to perform synchronous processing of decoding and display with video, audio, subtitles, superimposed characters, or other data.

  Furthermore, the broadcast receiving apparatus of the present embodiment presents the current time to the user with a time management function based on "JST_time" including 24-bit information represented by six 4-bit binary decimal numbers of MH-TOT. The process or the MH-event information table (MH-EIT) described in FIG. 6B may be used for each process. Generally, in the process of presenting the current time to the user in the broadcast receiving apparatus, accuracy to less than a second is hardly required. Also, each time information described in the MH-event information table (MH-EIT) is a table of six 4-bit binary coded decimal numbers, similar to the EIT of the conventional digital broadcast transmitted by the MPEG2-TS system. The 24-bit information is stored in decimal 2 digit "hour", "minute" and "second". Therefore, the time management function based on the MH-TOT in the broadcast receiving apparatus 100 of the present embodiment is easy to be consistent with the process using the MH-EIT. Specifically, the processing using the MH-EIT is processing for generating a program guide (described later), control of recording reservation and viewing reservation, copyright management processing such as temporary storage, and the like. It is rare that any processing requires an accuracy of less than a second, and an accuracy of one second is sufficient.

  In addition, the program guide generation processing, control of recording reservation and viewing reservation, and copyright management processing such as temporary storage are functions that can be installed even in a receiver of a digital broadcasting system using the conventional MPEG2-TS method. . Then, also in the broadcast system of the present embodiment, the conventional MPEG2-TS digital broadcast system is used for processing such as program guide generation processing, control of recording reservation and viewing reservation, and copyright management processing such as temporary storage. A broadcast receiver having both the conventional MPEG2-TS digital broadcast reception function and the MMT digital broadcast reception function can be configured by being configured to be compatible with consistent time management processing. In these processes (processes such as program guide generation, recording reservation and viewing reservation control, copyright management processing such as temporary storage, etc.), there is no need to design the processing algorithm separately, and the cost is low. can do.

  In addition, even if the receiver has only the reception function of digital broadcast of MMT system without the reception function of digital broadcast of conventional MPEG2-TS system, the processing of program guide generation, control of recording reservation and viewing reservation, Since it is possible to divert the algorithm of the function to be installed even in the receiver of the digital broadcast system using the conventional MPEG2-TS method, without completely creating the algorithm of processing such as temporary storage and the like of copyright management processing completely. It can be developed at lower cost.

  Therefore, a configuration using the time management function based on the MH-TOT “JST_time” parameter for these processes (processes such as program guide generation processing, control of recording reservation and viewing reservation, copyright management processing such as temporary storage, etc.) By this, even in the case of a broadcast receiving apparatus of digital broadcast of the MMT system, it is possible to provide at lower cost by improving the consistency with the conventional broadcasting system.

  As described above, the broadcast receiving apparatus 100 according to the present embodiment has a time management function using two types of time information with different precision. One of the time information is a time information written in a manner consistent with that of the conventional digital broadcasting system, and the other time information is time information having a higher resolution than the one time information, and the latter time information is By using for synchronous processing of each content data, more advanced information presentation processing is realized than the conventional broadcast system, and the former time information is processed for program guide generation processing, control of recording reservation and viewing reservation, and work such as temporary storage The broadcast receiving apparatus can be provided at low cost by using for right management processing and the like.

  Therefore, in the broadcast receiving apparatus 100 according to the present embodiment, by providing the above-described two types of time management functions, it is possible to achieve both the realization of more advanced information presentation processing and the cost reduction.

[First Modification of Time Management]
Next, a first modification of time management in the broadcast system of this embodiment will be described below.

  In the first modification, from the time management server (not shown) or the broadcast station server 300 to the broadcast receiving apparatus 100 in order to improve the accuracy of the management time of the time management function based on NTP already described using FIG. 7C. The broadcast receiving apparatus 100 is configured to use information on the estimated delay time to correct the system clock of the time management function based on NTP, by including information on the estimated delay time in time information transmission in the broadcast signal in the broadcast signal and transmitting the information. Also good.

  At this time, the information regarding the estimated delay time may be configured to be transmitted not in the TLV multiplexed stream shown in FIG. 3A but in the transmission and multiplexing configuration control (TMCC) region outside the TLV multiplexed stream. good. If transmission is performed in the TMCC region, the broadcast receiving apparatus 100 can extract information on the estimated delay time without passing through the separation processing (de-max processing) of the TLV multiplexed stream. That is, it is possible to obtain information that is not easily affected by the delay due to the separation processing in the broadcast receiving apparatus 100, and therefore, it is possible to perform a highly accurate correction process of the system clock. An example of a data structure of time information transmitted by the TMCC signal will be described with reference to FIG. 13C. The time information may be stored, for example, in the TMCC extended information area and transmitted. In the time information in the TMCC extended information area in FIG. 13C, the “delta” parameter is a 32-bit assumed value of the transmission delay from the time management server distributing UTC or the server apparatus creating the TMCC signal to a general broadcast receiving apparatus It is represented by the signed fixed point of. The upper 16 bits describe the integer part and the lower 16 bits describe the decimal part. The “transmit_timestamp” parameter is a transmission timestamp, and describes the time when this TMCC signal is transmitted from the server apparatus in the NTP timestamp format. The upper 32 bits represent the integer part and the lower 32 bits represent the decimal part.

  In the first modification, the broadcast receiving apparatus 100 of the present embodiment stores information on the estimated delay time described in the time information stored and transmitted in the TMCC extended information area (for example, the “delta” described above). The parameter clock and / or the “transmit_timestamp” parameter can be used to correct the system clock of the NTP-based time management function used for synchronization processing of each content data of the broadcast signal with higher accuracy.

Second Modification of Time Management
Next, a second modification of time management in the broadcast system of this embodiment will be described below.

  As described above, the broadcast receiving apparatus 100 according to the present embodiment has a time management function of managing the time by acquiring the current date and the Japan Standard Time from the information transmitted by the MH-TOT. The current date and the Japanese standard time acquired by the information transmitted by the MH-TOT are superimposed on the video information, the application information, and the like by the video combining unit 161 of the broadcast receiving apparatus 100, and the monitor unit 162 or the video output unit 163 It can be output and provided to the user. As described above, the MH-TOT has the data structure shown in FIG. 11A, and the broadcast receiving apparatus 100 can obtain the current date and the current time from the “JST_time” parameter of the MH-TOT.

  However, in the above-mentioned "JST_time" parameter, only the lower 16 bits of the MJD encoded data are used, so that an overflow occurs on "April 22, 2038", and the predetermined operation Only can not express the date after "April 23, 2038". Therefore, in the second modified example of the present embodiment, the date after "April 23, 2038" is expressed by switching the calculation method depending on whether the value of MJD is equal to or more than the predetermined value or less than the predetermined value. It shall be controlled as it can.

  FIG. 12 shows an example of a first calculation method used when the value of MJD is equal to or more than a predetermined value and a second calculation method used when the value of MJD is less than the predetermined value. For example, when the predetermined value is “32768 (0x8000)”, the current date is calculated using the first calculation method when the MJD is “32768” or more, and the MJD is less than “32768”. Calculates the current date using the second calculation method. The case where MJD is less than “32768” is equivalent to the case where the most significant bit of MJD 16-bit data is “0”. As a result, in the broadcast receiving apparatus 100 of the present embodiment, it is possible to represent dates after "April 23, 2038". However, the predetermined value can be set arbitrarily, and the predetermined value may be set to "16384 (0x4000)", "49152 (0xC000)", or the like. The switching condition of the calculation method may be such that when the upper two bits of MJD 16-bit data is "00", the upper two bits of MJD 16-bit data are not "11". In addition, when the above-mentioned means is used by setting the above-mentioned predetermined value to "32768", although the date before "September 4, 1948" can not be expressed, there is no particular problem in practical use as a television receiver. .

  Further, instead of switching the first calculation method and the second calculation method according to the comparison result of MJD and the predetermined value, the “reserved” parameter in the data structure of the MH-TOT shown in FIG. The first calculation method and the second calculation method may be switched according to a flag obtained by replacing a part or all or a flag added anew. For example, the flag sets “1” if the MJD indicates “April 23, 2038” or later when the most significant bit of MJD 16-bit encoded data is “0”. If you do not indicate "April 23, 2038" or later, you may set "0". When the flag is “1”, the second calculation method shown in FIG. 12 may be used, and when the flag is “0”, the first calculation method may be used. Alternatively, a descriptor having the same meaning as the flag may be newly prepared and disposed in the MH-TOT.

  Further, in the broadcast system of the present embodiment, as described above, the absolute time in the NTP format is transmitted, and the broadcast receiving apparatus 100 of the present embodiment has a time management function based on the NTP. Furthermore, in the broadcast receiving apparatus 100 according to the present embodiment, the decoding timing and the presentation for each presentation unit of the video / audio signal are referred to by referring to the NTP time stamp and the like described in the MPU time stamp descriptor set in MPU units. Control the timing. As described above, the NTP time information has the configuration shown in FIG. 13A. Further, the MPU time stamp descriptor has a configuration shown in FIG. 13B.

  Therefore, in the broadcast receiving apparatus 100 of the present embodiment, the "reference_timestamp" parameter, the "transmit_timestamp" parameter, or the "mpu_presentation_time" parameter, etc. are referred to, and the above-mentioned It is also possible to select which of the one calculation method and the second calculation method to use. That is, for example, when the most significant bit of the 64-bit NTP long time data is “0”, the second operation method is used, and when it is not “0”, the first operation method is used. Do, etc.

  By any of the above methods, in the broadcast receiving apparatus 100 of the present embodiment, it is possible to represent dates after "April 23, 2038".

[Selecting process of broadcast receiving apparatus (initial scan)]
The AMT of the broadcast system of the present embodiment provides a list of multicast groups of IP packets for receiving IP packets transmitted by TLV multiplexing as indistinguishably as possible from IP packets transmitted through a communication line. It shall be. Multiple IP multicast groups can be listed in one service identification. Also, it is possible to use an address mask to efficiently describe consecutive IP addresses.

  In the broadcast receiving apparatus 100 of this embodiment, at the time of channel scan at the time of initial setting, or at the time of rescan for setting change, a list of services acquired from the TLV-NIT is stored in the non-volatile memory such as the ROM 103 or the storage unit 110. And a list of IP multicast groups corresponding to each of the services can be stored in the non-volatile memory as IP related information in association with each of the services. Do. By storing the list of services and IP related information in non-volatile memory and enabling constant reference, there is no need to re-acquire TLV-NIT or AMT at channel switching etc., and it is efficient to acquire broadcast content. It will be possible to do.

  FIG. 14 is a diagram showing an example of an operation sequence at the time of channel scan (rescan) in the broadcast receiving apparatus 100 of the present embodiment.

  When channel scanning is started, the reception function execution unit 1102 sets an initial frequency value to the tuner / demodulation unit 131, and instructs tuning to the frequency value (S101). When the tuner / demodulator 131 succeeds in locking to the set frequency value (S102: Yes), next, the reception function execution unit 1102 acquires TLV-NIT from the reception signal (S103).

  If the TLV-NIT acquired in the process of S103 is valid data (S104: Yes), the reception function execution unit 1102 acquires information such as TLV stream ID, original network ID, etc. from the acquired TLV-NIT. (S105). FIG. 15A shows an example of the data structure of TLV-NIT. It is assumed that the information of the TLV stream ID can be acquired from the “tlv_stream_id” parameter, and the information of the original network ID can be acquired from the “original_network_id” parameter. Furthermore, distribution system information on the physical conditions of the broadcast channel corresponding to each TLV stream ID / original network ID is acquired from the distribution system descriptor (S106), and a list of service IDs is acquired from the service list descriptor (S106). S107). FIG. 15B shows an example of the data structure of the satellite distribution system descriptor. FIG. 15C shows an example of the data structure of the service list descriptor. If the TLV-NIT has a plurality of different data such as a TLV stream ID, an original network ID, distribution system information, and a list of service IDs, the processing of S105 to S107 is repeated. Next, the reception function execution unit 1102 creates a service list based on the data of the TLV stream ID, the original network ID, the distribution system information, the list of service IDs, etc. acquired in the processing of S105 to S107, and creates the service list. The service list is stored in the ROM 103 or the storage unit 110 (updated at the time of rescanning) (S108).

  Next, the reception function execution unit 1102 acquires an AMT from the reception signal (S109), and further acquires a list of IP multicast groups related to each service ID stored in the service list (S110). FIG. 15D shows an example of the data structure of AMT. If the AMT has a list of IP multicast groups related to a plurality of service IDs, the process of S110 is repeated. When there are a plurality of AMTs having a list of IP multicast groups related to different service IDs, the processing of S109 to S110 is repeated. Next, the reception function execution unit 1102 stores the list of IP multicast groups acquired in the process of S110 in the ROM 103 or the storage unit 110 as IP related information in association with the service ID (updated at the time of rescanning) (S111).

  When the tuner / demodulator 131 does not succeed in locking to the set frequency value in the process of S102 (S102: No), the TLV-NIT acquired in the process of S103 is not valid data. In the case (S104: No), the processing of S105 to S111 is not performed.

  When the process of S111 is completed, if the frequency value set in the tuner / demodulator 131 is the final frequency value of the channel scan range (S112: Yes), the reception function execution unit 1102 ends the process. On the other hand, if the set frequency value is not the final frequency value of the channel scan range (S112: No), the frequency value set in the tuner / demodulator 131 is increased (S113), and the processing of S102 to S111 is performed. repeat. If one TLV-NIT can acquire service IDs for all services that configure the broadcast network, and further, if it can acquire an AMT having a list of IP multicast groups related to the service ID, steps S112 to S113 are performed. There is no need for processing.

  According to the series of processes described above, the broadcast receiving apparatus 100 according to the present embodiment displays a list of services (service list) that constitute the broadcast network at the time of channel scanning at the time of initial setting or at the time of rescanning for setting change. At the same time as creation / update, a list (IP related information) of IP multicast groups corresponding to the respective services can be created / updated, and can be stored in nonvolatile memory such as the ROM 103 or the storage unit 110.

  Note that the rescanning for changing the setting is automatically performed when it is detected that the information in the table has been changed by referring to the "version_number" parameter of the TLV-NIT or AMT. It is good. When a change in one of “version_number” parameters of the TLV-NIT and the AMT is detected, only information on a table in which the change of the parameter is detected may be automatically updated. However, when the above-described automatic update is performed, it is desirable to notify the user that rescanning has been performed automatically. In addition, the user may be notified that there is a change in the information in the table, and the user may select whether to perform the rescanning.

[Channel selection process of broadcast receiving apparatus (channel switching)]
FIG. 16 is a diagram showing an example of an operation sequence at the time of channel selection (channel switching) in the broadcast receiving apparatus 100 of the present embodiment.

  When the user operates a remote controller or the like (not shown) to instruct channel switching, the reception function execution unit 1102 interprets the command transmitted from the remote controller and designates the service ID of the target service (S201). Next, the reception function execution unit 1102 starts acquisition of AMT from the reception signal of the tuner / demodulation unit 131. If acquisition of the AMT is successful within a predetermined time (S202: Yes), information on a list of IP multicast groups corresponding to the service ID is acquired from the acquired AMT (S204). On the other hand, when the acquisition of the AMT is not successful within the predetermined time (S202: No), the IP corresponding to the service ID is referred to by referring to the IP related information stored in the ROM 103 or the storage unit 110 or the like (S203). Information on a list of multicast groups is acquired (S204). Note that the IP related information stored in the ROM 103 or the storage unit 110 may always be referred to without performing the determination process of S202.

  Next, the reception function execution unit 1102 starts acquiring TLV-NIT from the reception signal of the tuner / demodulation unit 131. If acquisition of the TLV-NIT is successful within the predetermined time (S205: Yes), distribution system information for acquiring an IP data flow corresponding to the service ID is acquired from the acquired TLV-NIT (S207). On the other hand, when the TLV-NIT has not been successfully acquired within a predetermined time (S205: No), the service list stored in the ROM 103 or the storage unit 110 is referred to (S206) to correspond to the service ID. Distribution system information for acquiring an IP data flow is acquired (S207). Note that the service list stored in the ROM 103 or the storage unit 110 may always be referred to without performing the determination process of S205. When the distribution system information is acquired in the process of S207, next, the reception function execution unit 1102 controls the tuner / demodulation unit 131 with the frequency value instructed by the acquired distribution system information, and the service ID (S208), and extracts an MMT data string from the received IP data flow, and outputs the MMT data string to the separation unit 132.

  In the separation unit 132, the transport processing unit 1102a acquires an MMTP packet whose packet ID is “0” from the input MMT data string (S209), and further acquires an MPT included in the acquired MMTP packet. (S210). Next, the transport processing unit 1102a refers to the “MMT_package_id_byte” parameter of the acquired MPT, and confirms whether the lower 16 bits of the “MMT_package_id_byte” parameter have the same value as the service ID. In the example of the data structure of MPT shown in FIG. 17, when the lower 16 bits of the “MMT_package_id_byte” parameter have the same value as the service ID (S211: Yes), the MMTP packet whose packet ID is “0” is the above It is determined that the packet is an MMTP packet having data of a program corresponding to the service ID, and MFU acquisition is executed based on the information possessed by the acquired MPT (S216).

  On the other hand, when the lower 16 bits of the “MMT_package_id_byte” parameter is not the same value as the service ID (S211: No), the MMTP packet whose packet ID is “0” has the data of the program corresponding to the service ID. Judge that it is not a packet. In this case, the transport processing unit 1102a newly acquires a PLT (S212), and confirms the acquired PLT, whereby a packet ID of an MMTP packet for transmitting an MPT having an “MMT_package_id_byte” parameter corresponding to the service ID. Check (set as x) (S213). Furthermore, the transport processing unit 1102a acquires an MMTP packet whose packet ID is “x” from the input MMT data string (S214), and acquires MPT included in the acquired MMTP packet (S215). Further, the MFU is acquired based on the acquired information of the acquired MPT (S216).

  Note that the processing of S212 to S215 may be always performed without performing the processing of S209 to S211. In this case, when the data of the program corresponding to the service ID is stored in the MMTP packet other than the packet ID “0”, the processing time can be shortened.

  When the MFU is acquired in the process of S216, the transport processing unit 1102a extracts encoded video data, encoded audio data, and the like from the acquired MFU, and outputs the extracted data to the video decoder 141, the audio decoder 143, and the like. Hereinafter, video / audio decoding processing based on the control of the AV decoding processing unit 1102b and presentation processing based on the control of the presentation processing unit 1102h are performed. However, since the respective processing is known, the detailed description will be omitted.

  By the series of processes described above, the broadcast receiving apparatus 100 of the present embodiment can execute a channel selection (channel switching) operation. In particular, as described with reference to FIGS. 14 and 16, the service list and IP related information are created at the time of channel scan at the time of initial setting, or at the time of rescan for setting change, and the ROM 103 and storage unit By storing the information in a nonvolatile memory such as 110 and making it always referable, by referring to the service list and IP related information stored in the nonvolatile memory such as the ROM 103 and the storage unit 110 at channel selection (channel switching) It is possible to improve the efficiency of operation at channel selection (channel switching). That is, it is possible to shorten the time from the start of channel selection (channel switching) to the end of channel selection (channel switching) as compared to the case where AMT or TLV-NIT is reacquired at channel selection (channel switching). Become.

[Screen layout control of broadcast receiver]
In the broadcast receiving apparatus 100 of the present embodiment, screen layout control based on the LCT description is possible. FIG. 18 shows an example of the data structure of LCT.

  In the figure, in particular, the left_top_pos_x parameter and the right_down_pos_x parameter set the upper left horizontal position and the lower right horizontal position of the area, assuming that the left side of the full screen display is “0” and the right side is “100”. Each is shown as a ratio to the total number of pixels in the horizontal direction. The "left_top_pos_y" parameter and the "right_down_pos_y" parameter set the upper left vertical position and the lower right vertical position of the area in the vertical direction, assuming that the upper side of the full screen display is "0" / the lower side is "100". It shall be shown in proportion to the total number of pixels. The “layer_order” parameter indicates the relative position of the area in the depth direction.

  An example of layout assignment to layout numbers based on the setting of each parameter is shown in FIGS. 19A to 19D together with the setting value of each parameter.

  FIG. 19A is a default layout setting of the broadcast receiving apparatus 100 of the present embodiment, and is an example in which only one area is set on the entire screen. FIG. 19B is an example in the case where the entire screen is divided into three areas, and the respective areas are “area 0”, “area 1”, and “area 2”. For example, assuming that the number of pixels of the entire screen is 7680 horizontal pixels / vertical 4320 pixels, “region 0” is “0” for the “left_top_pos_x” parameter, “0” for the “left_top_pos_y” parameter, and “80 for the“ right_down_pos_x ”parameter. Since the "right_down_pos_y" parameter is "80", it is set in the range of (0, 0)-(6143, 3455). Similarly, "region 1" is set to the range of (6144, 0)-(7679, 4319), and "region 2" is set to the range of (0, 3456)-(614 3, 4319).

  FIG. 19C is an example in which three areas are set as in FIG. 19B, but “area 0” is set to the range of (0, 0) − (7679, 4319), and “area 1” and “area 2 ′ ′ is placed in front of “region 0” according to the setting of the “layer_order” parameter in the same range as described above. In FIG. 19D, “area 0” is set in device 0 (the default device: the broadcast receiving apparatus 100 in the present embodiment), and “area 1” is set in the device 1 (the portable information terminal 700 in the present embodiment). Is an example of the case where

  As described above, in the broadcast system of this embodiment, by using the LCT, it is possible to perform screen layout control for displaying the multimedia service on the receiver as intended by the service provider.

  The fraction after the decimal point generated when dividing the screen according to the setting value of the parameter such as “left_top_pos_x” may be rounded up or down. Rounding (or rounding in binary numbers) may be used. For example, the number of pixels of the whole screen is 7680 pixels / vertical 4320 pixels, the "left_top_pos_x" parameter of "region 0" is "0", the "left_top_pos_y" parameter is "0", the "right_down_pos_x" parameter is "51", the "right_down_pos_y" If the parameter is “51”, “area 0” may be set in the range of (0, 0) − (3916, 2203) by round-up processing, or (0, 0) − (3915, "Area 0" may be set in the range of 2202). In addition, rounding up / down processing in units of 8 pixels, 16 pixels, etc. may be performed in consideration of a macro block in video compression processing. By the above processing, it is possible to efficiently perform region setting based on LCT and resolution conversion processing of multimedia content in the region.

[Exception processing of screen layout control of broadcast receiver]
In the broadcast receiving apparatus 100 according to the present embodiment, even when the area control of the screen layout is performed by the above-described LCT, an exception process is performed, for example, when the user instructs to display the EPG screen. It is possible to perform screen layout control ignoring the description content of the LCT. FIG. 20A shows an example of the operation of exception processing of screen layout control based on LCT.

  The same screen layout control as in FIG. 19B is performed according to the LCT description, and a broadcast program video is displayed in "area 0", and broadcasts such as program cooperation data linked to the broadcast program in "area 1" and "area 2". When the user instructs to display the EPG screen with a remote controller (not shown) while the content is displayed, the broadcast receiving apparatus 100 according to the present embodiment describes the LCT as shown in FIG. 20A (A). Regardless of the content, the screen layout setting is returned to the default setting (that is, the state in which the screen layout control similar to that in FIG. 19A is performed), and the EPG screen is controlled to be displayed on the entire screen. Furthermore, when the user instructs to end the display of the EPG screen, the screen layout control according to the description content of LCT is re-executed.

  By performing the control described above, the EPG screen can be displayed larger compared to the case of displaying the EPG screen while maintaining the area control of the screen layout as shown in FIG. 20A (B). It is possible to improve the visibility.

  The exception processing of the screen layout control is not applied only when displaying the EPG screen, and as shown in FIG. 20B, various setting screens of the broadcast receiving apparatus 100 (recording setting screen in the illustrated example) ) May be applied when displaying a subscreen or when displaying two screens.

  In the case of the recording setting screen shown in FIG. 6A, the display area of the broadcast content is changed from the entire screen to only the subscreen portion at the lower right of the screen. Similarly, in the case of the two-screen display shown in FIG. 6B, the display area of the broadcast content is changed from the entire screen to only the divided screen part on the left side of the middle of the screen. In any case, the display area for displaying the broadcast content becomes narrower as compared to the case where the entire screen is used, so the area control of the screen layout is maintained in the display area (that is, the area division It is not preferable from the viewpoint of visibility to go and display a plurality of broadcast contents at the same time). Therefore, in the broadcast receiving apparatus 100 according to the present embodiment, only the broadcast content of “area 0” is selected and displayed in the display area in the above-mentioned situation. Note that the broadcast content of "area 1" or "area 2" may be selected and displayed according to the area selection condition immediately before.

  By performing the control described above, it is possible to improve the legibility of the broadcast content as compared to the case where various broadcast contents are displayed while maintaining the area control of the screen layout. The same applies to child screen display on the recorded program list screen and browser display of Internet contents.

[EPG display on broadcast receiver]
In the broadcast system of the present embodiment, it is assumed that time-series information on events (so-called programs) included in each service constituting a broadcast network is transmitted by MH-EIT. FIG. 21 shows an example of the data structure of the MH-EIT of this embodiment. MH-EIT is identified into two classes by the table ID (corresponding to the “talbe_id” parameter in the figure), and indicates the information of the current / next event of the own TLV stream and the schedule information of each event of the own TLV stream Shall be possible. The broadcast receiving apparatus 100 according to the present embodiment refers to the MH-EIT or the like to perform identification based on the service ID (corresponding to the “service_id” parameter in the drawing), and thereby information such as the start time of each event and the broadcast time. It is possible to create an EPG screen by acquiring the EPG, and to superimpose the created EPG on video information etc. by the video synthesizing unit 161 and to display it on the monitor unit 162.

  FIG. 22A is a diagram showing an example of an EPG screen in the broadcast receiving apparatus 100 of the present embodiment. The EPG screen 162a has a matrix shape in which the vertical axis represents time display and the horizontal axis represents service ID (channel) display, and detailed information of broadcast programs to be broadcasted on each channel in each time zone is displayed. Further, the detailed information 162a1 of each broadcast program mainly includes a title area 162a2 and a detailed explanation area 162a3.

  In the title area 162a2, a program title of the broadcast program and a symbol representing an attribute of the broadcast program are displayed. The symbol or the like representing the attribute of the broadcast program is, for example, a symbol / character indicating that it is a new program, a symbol / character indicating that it is a rebroadcast program, or the like. Alternatively, it may be a mark or the like that symbolizes "data" which means that it supports data broadcasting by the broadcasting service. In addition, it may be a mark 162a4 or the like that symbolizes "NetWork" which means that contents, applications and the like related to the broadcast program can be acquired from the network. Further, the symbol or the like representing the attribute of the broadcast program may be substituted by differentiating the background color of the detailed information 162a1 from the others or by surrounding the display area of the detailed information 162a1 with a thick frame.

  It is to be noted that each control information (message, table, descriptor, etc.) in the broadcast system of this embodiment indicates that the content or application related to the broadcast program can be obtained from the network. Even if the LAN communication unit 121 of the broadcast receiving apparatus 100 is not connected to a LAN cable, for example, in the state where access to each server apparatus on the network can not be made, the mark 162a4 is obtained by symbolizing "NetWork". You may control so that an etc. may not be displayed.

  Also, in the case where the broadcast program is a distributed program distributed via the Internet 200 and can not be acquired from broadcast waves alone, and further, as described above, each server apparatus on the network is the broadcast receiving apparatus 100. In the case where the user can not access, etc., as shown in FIG. 22B, control may be performed to gray out the portion of the detailed information 162b1 displayed on the EPG screen 162b. That is, control is performed so as not to display detailed information of a broadcast program that can not be viewed. In addition, the background color of the detailed information 162b1 may be differentiated from the others to be an alternative to the gray-out process. When detailed information 162b1 is selected by the operation of a remote controller (not shown), the broadcast reception apparatus 100 can not access each server apparatus on the network or can watch the distribution program associated with the detailed information 162b1 It is also possible to notify the user of the failure by pop-up or the like.

  According to each control described above, the broadcast receiving apparatus 100 can provide the program information of each broadcast program in a form that is more comfortable to the user according to the network connection status.

  FIG. 22C is a diagram showing another example of the EPG screen in the broadcast receiving apparatus 100 of the present embodiment. In the figure, “M1 TV”, “M2 broadcast”, “M3 channel”, “M4 TV”, “TV M5”, etc. are the names of broadcasting stations of each channel, and in particular, “M2 broadcasting” station is broadcasted by broadcast waves It is assumed that a broadcast program to be distributed and a distribution program to be distributed via the Internet 200 (information 162c1 of a frame indicated by "net broadcast" in the drawing) are simultaneously provided.

  As shown in the figure, when there is a channel having only a distribution program distributed via the Internet 200, all channels (including information 162c1) are normally shown as shown in the EPG screen 162c of FIG. Control to display the information of. On the other hand, when the broadcast receiving apparatus 100 can not access each server apparatus on the network, etc., it has only a distributed program distributed via the Internet 200 as shown in the EPG screen 162 d of FIG. Control may be performed so as not to display the information of the channel of “M2 broadcast (net broadcast)” (information 162 c 1 in FIG. 6A).

  By each control described above, the user of the broadcast receiving apparatus 100 can make it unnecessary to confirm the information of the channel that the user can not view and listen to.

[Emergency alert broadcast display of broadcast receiver]
The broadcast receiving apparatus 100 according to this embodiment receives emergency alert broadcast reception processing when the emergency alert broadcast activation control signal bit of the TMCC signal included in the transmission data including the TLV stream changes from “0” to “1”. It shall be possible to do.

  The emergency alert broadcast may be provided as a full screen display application, or may be provided as text information in a text box. When the emergency alert broadcast is provided as text information in a text supermarket, it is preferable to display the text information of the text supermarket regardless of the state of the broadcast receiving apparatus 100 immediately before the reception of the emergency alert broadcast. That is, as shown in FIG. 23, when the user views a normal broadcast program and receives an emergency alert broadcast in a state where the program screen 162e of the broadcast program is displayed on the monitor unit 162, the emergency alert broadcast is performed. Text information 162e1 is superimposed on the program screen 162e and displayed. Similarly, when the user instructs to display the EPG screen and the emergency alert broadcast is received in a state where the EPG screen 162f is displayed on the monitor unit 162, the character information 162f1 by the emergency alert broadcast is superimposed on the EPG screen 162f. Control to display the

  By the control described above, in the broadcast receiving apparatus 100 of the present embodiment, even when the user has selected and displayed an EPG screen, various setting screens, a recorded program list screen, an internet browser, etc. When it is received, it is possible to avoid missing of important character information based on the emergency alert broadcast. Note that this control may be performed on character information of a normal character super that is not based on emergency alert broadcasting.

[Various exception handling]
The broadcast receiving apparatus 100 of the present embodiment may perform the following exception processing, for example, when TLV stream outside data in the same package can not be acquired.

  As described in FIG. 6E, in the broadcast system to which the broadcast receiving apparatus 100 of the present embodiment supports, in the TLV stream based on the location information (corresponding to “MMT_general_location_info ()” in FIG. 17) stored in the MPT. Data to be acquired and data to be acquired through a route other than the TLV stream can be included in the same package. However, the data transmission path other than the TLV stream indicated by the location information (for example, IPv4 data flow, IPv6 data flow, MPEG2-TS of broadcast, etc.) is a reception function different from the TLV / MMT stream reception function. Therefore, even when the broadcast receiving apparatus 100 is in operation, the reception function of these transmission paths is not operating, the reception function itself is operating, but the relay apparatus is not operating, or There may be situations where data can not be acquired from these transmission paths, such as a situation where there is no wired or wireless connection of the transmission paths in the above, or a situation where the broadcast receiving apparatus 100 is installed in an environment where these transmission paths can not be connected originally .

  Under such circumstances, the location information stored in the MPT indicates an event indicating that data acquired in the TLV stream and data acquired in a route other than the TLV stream are associated so as to be included in the same package. When received, the broadcast receiving apparatus 100 of this embodiment may perform, for example, the following operation.

  For example, LCT sets a plurality of areas in the screen as shown in FIG. 19B and FIG. 19C, displays the image included in the TLV stream in “area 0”, and displays “area 1” or “area 2”. Is associated with the data acquired through the transmission route other than the TLV stream, and the data of the transmission route other than the TLV stream to be displayed in the “region 1” and the “region 2” is If acquisition is not possible, layout display of a plurality of areas designated by the LCT may be prohibited. Specifically, even if the LCT is received, the image of the content to be received in the TLV stream is still displayed in “area 0” of the default layout display shown in FIG. 19A, as shown in FIG. 19B or 19C. It is sufficient not to shift to layout display of multiple areas. Furthermore, in this state, even if a change instruction from the default layout to the layout indicated by LCT is input to operation input unit 170 of FIG. 7A, the default layout display shown in FIG. It is also possible not to shift to the layout display of a plurality of areas as shown in FIG. 19B and FIG.

  The LCT sets a plurality of areas in the screen as shown in FIG. 19B and FIG. 19C, displays the video included in the TLV stream in “area 0”, and displays in “area 1” and “area 2”. It is a case where data acquired by transmission routes other than TLV streams are associated so as to be displayed, and data of transmission routes other than TLV streams to be displayed in “area 1” and “area 2” can not be acquired. As another operation example of the case, display frames of a plurality of regions shown in FIG. 19B and FIG. 19C indicated by LCT are displayed once, and a background color and a predetermined still image are displayed for “region 1” and “region 2”. If you can not acquire data of a transmission path other than the TLV stream indicated by the location information of the MPT even after the predetermined time has passed, display switching is performed to return to the state of the default layout display shown in FIG. 19A. And it may be. In this case, even when the layout in FIG. 19A, FIG. 19B, and FIG. 19C is changed, if the program video included in the TLV stream continues to be displayed in "area 0" Is preferable because it continues.

  In addition, the content received in the TLV stream in “area 0” of the default layout display shown in FIG. 19A can not be obtained because data of transmission paths other than the TLV stream to be displayed in “area 1” and “area 2” can not be acquired. In the state where the video is displayed, operations of various communication functions and various reception functions of the broadcast receiving apparatus 100 of the present embodiment are started, communication environments of various communication functions, communication status, and various reception functions. Due to changes in the reception environment and the reception situation, it may be possible to obtain data of transmission paths other than the TLV stream to be displayed in "area 1" and "area 2". In this case, the broadcast receiving apparatus 100 of this embodiment immediately switches from the default layout display shown in FIG. 19A to the layout of a plurality of areas as shown in FIG. 19B or 19C shown by LCT, and sets TLV to “area 0”. It is also possible to display the video of the content to be received in the stream and switch to display data acquired from a transmission path other than the TLV stream in “area 1” or “area 2”. In addition, the layout change may be executed after the change instruction from the default layout to the layout indicated by LCT is input from the operation input unit 170 without immediately performing the layout change.

[Copyright protection function]
In the digital broadcast system supported by the broadcast receiving apparatus 100 according to the present embodiment, by including the copy control information in the MPT and transmitting, for example, “the copy is unlimitedly possible according to the copy control information”. And it may be divided into 2 types: “Encryption processing required” and “Unlimited copying possible and encryption processing unnecessary when storing and outputting”), “Copy only for 1 generation”, “Copying a predetermined number of times” ( For example, it may be configured to indicate and transmit the copy control state of the content to which the MPT refers, such as "copying 9 times + moving 1 time so-called" dubbing 10 ")," copying prohibited ", and the like. In this case, according to the copy control information, the broadcast receiving apparatus 100 of the present embodiment stores the content in the storage (storage) unit 110, records in the removable recording medium, outputs to the external device, and outputs to the external device. It may be configured to control copying, moving to an external device, and the like. The target of the storage process may include not only the storage (storage) unit 110 in the broadcast receiving apparatus 100 but also a record subjected to protection processing such as encryption processing so as to be reproducible only by the broadcast receiving apparatus 100. . Specifically, the target of the storage process includes an external recording device or the like which is in a state where recording and reproduction are possible only by the broadcast receiving device 100.

  A specific example of processing based on the copy control information is described below.

  First, when the copy control information included in the MPT indicates “Copy unlimitedly possible”, the broadcast receiving apparatus 100 according to the present embodiment stores data in the storage (storage) unit 110, recording on a removable recording medium, external device Output to, copying to an external device, or moving to an external device may be performed without restriction. However, if “unrestricted copying allowed and encryption required when storing and outputting” and “unlimited copying allowed and storing unnecessary when encrypting processing unnecessary” are separated, “unlimited copied allowed and stored and output When encryption processing is required, the number of storage in storage (storage) unit 110, recording on removable recording media, output to external devices, copying to external devices, move processing to external devices is limited to the number of times It can be done without, but in any case it is necessary to apply encryption processing.

  In addition, when the copy control information included in the MPT indicates “copy only for one generation is possible”, the broadcast receiving apparatus 100 according to the present embodiment enables encryption and storage in the storage (storage) unit 110. When outputting the content after storage to an external device for viewing, it is encrypted and output together with copy control information of "copy prohibited". However, so-called move processing to the external device (processing to copy the content to the external device and to make the content in the storage (storage) unit 110 of the broadcast receiving apparatus 100 impossible to reproduce by deletion processing or the like) is possible.

  In addition, when the copy control information included in the MPT indicates “copying allowed a predetermined number of times”, the broadcast receiving apparatus 100 of this embodiment enables encryption and storage in the storage (storage) unit 110. When outputting the content after storage to an external device for viewing, it is encrypted and output together with copy control information of "copy prohibited". However, it may be possible to perform a predetermined number of copying and moving processes to an external device. In the case of the so-called "dubbing 10" specification, nine copies and one move processing may be performed on an external device.

  Also, when the copy control information included in the MPT indicates "copy prohibited", the broadcast receiving apparatus 100 of the present embodiment prohibits copying to the storage (storage) unit 110. However, the broadcast receiving apparatus 100 stores the storage (storage) unit 110 only for a predetermined predetermined time or a predetermined time specified by control information (for example, by the MH-Expire descriptor shown in FIG. 6D) included in the broadcast signal. When configured to have a “temporary storage” mode that enables the storage of data in the storage (storage) unit 110, even if the copy control information included in the MPT indicates “copy prohibited”. Enables temporary holding of the content. When the copy control information included in the MPT is "copy prohibited" and is output for viewing to an external device, it is encrypted and output together with the copy control information of "copy prohibited".

  Note that the output for viewing to the external device described above may be performed via the video output unit 163 and the audio output unit 166 in FIG. 7A, or the digital I / F unit 125, the LAN communication unit 121, or the like. The copy or move processing to the external device described above may be performed via the digital I / F unit 125, the LAN communication unit 121, or the like of FIG. 7A.

  According to the processing described above, appropriate content protection can be realized according to the copy control information associated with the content.

  In addition, copy processing of content whose copy control information indicates copy restriction such as "copy only for one generation", "copy allowed for a predetermined number of times", "copy prohibited", etc. to an external device via the LAN communication unit 121 Is enabled only when the IP address of the external device that is the destination of the transmission packet from the broadcast receiving apparatus 100 is in the same subnet as the IP address of the broadcast receiving apparatus 100, and the IP address of the external device is the broadcast receiving apparatus. If it is outside the same subnet as the IP address of 100, you may prohibit it. The copy control information may be treated in the same manner as the content of “copying unlimitedly possible and encryption processing required upon accumulation and output”.

  Similarly, once the copy control information indicates a copy restriction such as "copy only for one generation", "copy possible for a predetermined number of times", "copy unlimited for unlimited and encryption processing required for storage and output", etc. Also in the processing of moving to an external device via the LAN communication unit 121 after being stored in the storage (storage) unit 110, the IP address of the external device which is the destination of the transmission packet from the broadcast receiving device 100 is the broadcast receiving device 100. If the IP address of the external device is outside the same subnet as the IP address of the broadcast receiving apparatus 100, it may be prohibited.

  In principle, the IP address of the external device, which is the destination of the transmission packet from the broadcast receiving apparatus 100, receives the broadcast output of the viewing video and audio output of the content stored in the storage (storage) unit 110 of the broadcast receiving apparatus 100. It is possible only when the IP address of the apparatus 100 is in the same subnet, and it is prohibited when the IP address of the external device is out of the same subnet as the IP address of the broadcast receiving apparatus 100. However, the external device is connected within the same subnet as the IP address of the broadcast receiving apparatus 100 within a predetermined period, and registration processing as an apparatus that can be viewed outside the same subnet as the IP address of the broadcast receiving apparatus 100 In the case of a device that has been paired (paired), even if the IP address of the external device is out of the same subnet as the IP address of the broadcast reception device 100, storage (storage) of the broadcast reception device 100 to the external device It may be configured to enable video output for viewing / listening to the content stored in the unit 110 and audio output. In this case, the video output for viewing and the audio output are performed by encrypting the content.

  According to the processing described above, compatibility between user convenience and content protection can be achieved by performing different processing depending on whether the external device is in the same subnet as the IP address of the broadcast receiving apparatus 100 or outside the same subnet. Can be realized.

  Next, as described in FIG. 6E, in the digital broadcast system to which the broadcast receiving apparatus 100 of this embodiment corresponds, location information in the MPT (“MMT_general_location_info ()” in FIG. Data acquired through a different route (IPv4, IPv6, MPEG2-TS, URL, etc.) from the acquired data may be included in the same package and in the same event as the data acquired in the TLV stream. Content protection when control information is included will be described.

  First, when the MPT includes copy control information, the data contained in the same package and the same event in the location information is different from the data acquired in the TLV stream of the broadcast path (IPv4, IPv6, MPEG2-TS, URL, etc. Even in the case of the data acquired in the above, it may be controlled in accordance with copy control information included in the TLV stream. As described above, the copy control status of the content designated by the copy control information is "unlimited copy allowed" ("unlimited copy allowed and encryption processing required for storage and output" and "unlimited copy allowed" And it may be divided into 2 types of encryption processing unnecessary at the time of accumulation and output), “Copy only for one generation”, “Copy possible for a predetermined number of times” (For example, copy nine times + move one time so-called Dubbing 10 ”),“ copy prohibited ”, etc. can be specified.

  Here, when the position of the data indicated by the location information includes the data of MPEG2-TS transmitted by another digital broadcast signal, the data of the MPEG2-TS is associated with the copy control information even in the other digital broadcast signal. Being broadcast. Then, how to perform copy control of the data of the MPEG2-TS according to which information (following the copy control information included in the TLV / MMT stream or the copy control information included in the MPEG2-TS) becomes a problem .

  In the digital broadcast system of the present embodiment, as a solution to this problem, the broadcast receiving apparatus 100 may perform any one of the following solutions.

<Operation example 1>
In the first operation example, when the MPT includes copy control information, and the data included in the same package and the same event in the location information includes the data of MPEG2-TS transmitted by another digital broadcast signal, The copy control state indicated by the copy control information contained in the TLV stream is controlled with priority over the copy control state indicated by the copy control information contained in the TS.

  For example, the copy control status indicated by the copy control information included in the TLV stream is "1 generation copy enabled", and the copy control status indicated by the copy control information included in the MPEG2-TS is "predetermined multiple copies allowed" If it is, even if it is data acquired by a different route (digital broadcasting in the MPEG2-TS transmission format) than the data acquired by the TLV stream, copy control may be performed as “1 generation copy is possible” content. For example, the copy control status indicated by the copy control information included in the TLV stream is "unlimited copying allowed", and the copy control status indicated by the copy control information included in the MPEG2-TS is "predetermined multiple copying permitted". If it is, even if it is data acquired by a different route (digital broadcasting in the MPEG2-TS transmission format) than the data acquired by the TLV stream, copy control may be performed as the content of “copy unlimited”.

  In the case of this operation, it is possible to put in a copy state that the broadcast receiving apparatus 100 of the present embodiment wants to manage data acquired through a route other than the TLV stream in the corresponding broadcast system.

<Operation example 2>
In the second operation example, when the MPT includes copy control information, and the data included in the same package and the same event in the location information includes data of MPEG2-TS transmitted in another digital broadcast signal, the TLV stream The copy control state indicated by the copy control information included in the MPEG-2 TS is compared with the copy control state indicated by the copy control information included in the MPEG2-TS, and the copy control state indicated by the copy control information included in the MPEG2-TS is compared. Is stricter than the copy control state indicated by the copy control information included in the TLV stream, storage processing in the storage unit 110 or the like, recording processing on a removable recording medium, or output processing from the digital interface is performed. When processing the data of the MPEG2-TS It operates to exclude the content.

  In the case of this operation, with regard to data acquired through a route other than the TLV stream, copying on the broadcast receiving apparatus 100 of the present embodiment is performed while respecting the original copy control information set in the broadcasting system for transmitting the data. It is possible to eliminate duplication of control state.

  Also, as a result of the comparison, when the copy control state indicated by the copy control information included in the MPEG2-TS is the same as the copy control state indicated by the copy control information included in the TLV stream or a looser copy control state The copy control may be performed as the content in the copy control state indicated by the copy control information included in the TLV stream also for the data of MPEG2-TS included in the same package and the same event in the location information.

  In the case of this operation, with regard to data acquired through a route other than the TLV stream, copying on the broadcast receiving apparatus 100 of the present embodiment is performed while respecting the original copy control information set in the broadcasting system for transmitting the data. It is possible to eliminate duplication of control state.

  In the above description, the copyright protection function of the broadcast receiving apparatus 100 of the present embodiment has been described as being performed based on copy control information included in the MPT. However, the table for arranging copy control information is not limited to MPT. Besides the MPT, the broadcast reception apparatus 100 arranges the MH-service description table (MH-SDT), the MH-event information table (MH-EIT), or other tables described in FIG. A copyright protection process may be performed.

According to the embodiment described above, it is possible to provide a broadcast receiver compatible with MMT digital broadcasting.
(Example 2)

  Hereinafter, the second embodiment of the present invention will be described. The configurations, processes, effects and the like in this embodiment are the same as in Embodiment 1 unless otherwise noted. Therefore, in the following, the difference between the present embodiment and the first embodiment will be mainly described, and the description of the common points will be omitted as much as possible in order to avoid duplication. The following description will be made on the assumption that the broadcast receiving apparatus of the present embodiment is a television receiver compatible with both the MMT method and the MPEG2-TS method as the media transport method.

[Hardware configuration of broadcast receiving apparatus]
FIG. 24 is a block diagram showing an example of the internal configuration of the broadcast receiving apparatus 800. As shown in FIG. The broadcast receiving apparatus 800 includes a main control unit 801, a system bus 802, a ROM 803, a RAM 804, a storage unit 810, a LAN communication unit 821, an expansion interface unit 824, a digital interface unit 825, a first tuner / demodulation unit 831, a second tuner / second tuner / Demodulation unit 832, MMT decode processing unit 841, MPEG2-TS decode processing unit 842, video synthesis unit 861, monitor unit 862, video output unit 863, audio synthesis unit 864, speaker unit 865, audio output unit 866, operation input unit 870 Composed of

  The main control unit 801, system bus 802, ROM 803, RAM 804, storage unit 810, expansion interface unit 824, digital interface unit 825, monitor unit 862, video output unit 863, speaker unit 865, audio output unit 866, operation input unit 870, The main control unit 101, the system bus 102, the ROM 103, the RAM 104, the storage (storage) unit 110, the expansion interface unit 124, the digital interface unit 125, the monitor unit 162, and the video output unit 163 in the broadcast receiving apparatus 100 of the first embodiment. The speaker unit 165, the audio output unit 166, the operation input unit 170, and the like have the same functions as those described above, and the detailed description will be omitted.

  The first tuner / demodulation unit 831 receives a broadcast wave of a broadcast service adopting MMT as a media transport system via an antenna (not shown), and a service desired by the user based on the control of the main control unit 801. Tune to the channel of. Further, the first tuner / demodulation unit 831 demodulates the received broadcast signal to obtain an MMT data string, and outputs the MMT data string to the MMT decoding processing unit 841. The second tuner / demodulation unit 832 receives a broadcast wave of a broadcast service adopting MPEG2-TS as a media transport method via an antenna (not shown), and based on the control of the main control unit 801, the user desires (Tune) to the service channel to be Furthermore, the second tuner / demodulation unit 832 demodulates the received broadcast signal to obtain an MPEG2-TS data string, and outputs the data stream to the MPEG2-TS decoding processing unit 842.

  The MMT decoding processing unit 841 receives the MMT data string output from the first tuner / demodulation unit 831 and, based on the control signal included in the MMT data string, a video data string that is a real-time presentation element, an audio data string, It performs separation processing, decoding processing, and the like of a character super data string, a subtitle data string, and the like. The MMT decoding processing unit 841 is the separating unit 132, the video decoder 141, the video color gamut converting unit 142, the audio decoder 143, the character super decoder 144, the subtitle decoder 145, the subtitle synthesizing unit 146 in the broadcast receiving apparatus 100 of the first embodiment. A function corresponding to the subtitle color gamut conversion unit 147, data decoder 151, cache unit 152, application control unit 153, browser unit 154, application color gamut conversion unit 155, sound source unit 156, and the like is provided. The MMT decoding processing unit 841 can perform various processes described in the first embodiment. In addition, since the details of the various processes are as described in the first embodiment, the description will be omitted.

  The MPEG2-TS decoding processing unit 842 receives the MPEG2-TS data string output from the second tuner / demodulation unit 832, and based on the control signal included in the MPEG2-TS data string, video data which is a real-time presentation element A separation process, a decoding process, and the like of a row, an audio data string, a character super data string, a subtitle data string, and the like are performed. The MPEG2-TS decoding processing unit 842 has a function equivalent to that of an IRD (Integrated Receiver Decoder) unit of a conventional television receiver that receives a broadcast wave of a broadcasting service adopting MPEG2-TS as a media transport method, Detailed explanation is omitted.

  The video combining unit 861 inputs the video information, subtitle information, and application information output from the MMT decoding processing unit 841, and the video information, subtitle information, and application information output from the MPEG2-TS decoding processing unit 842, and Perform processing such as selection and / or superposition appropriately. The video synthesizing unit 861 includes a video RAM (not shown), and the monitor unit 862 is driven based on the video information and the like input to the video RAM. Also, the video combining unit 861 performs scaling processing, superimposing processing of EPG screen information, and the like as needed based on the control of the main control unit 801. The voice synthesis unit 164 inputs the voice information output from the MMT decoding processing unit 841 and the voice information output from the MPEG2-TS decoding processing unit 842 and performs processing such as selection and / or mixing as appropriate.

  The LAN communication unit 821 is connected to the Internet 200 via the router device 200r, and transmits / receives data to / from each server device on the Internet 200 and other communication devices. In addition, the MMT data string (or a part thereof) and the MPEG2-TS data string (or a part thereof) of the program transmitted via the communication line are acquired, and the MMT decoding processor 841 or the MPEG2-TS is appropriately selected. It is output to the decoding processing unit 842.

[Time display of broadcast receiver]
In the broadcast receiving apparatus 800 of the present embodiment, it is assumed that the current date and the current time can be displayed on an EPG screen, various setting screens, and the like. The information relating to the current date and the current time is transmitted by MH-TOT or the like in a broadcast service that employs MMT as a media transport method, and in a broadcast service that employs MPEG2-TS as a media transport method. [2] Transmission is performed using a Time Offset Table (TOT) or the like provided in SI (Service Information) defined in the system. The broadcast receiving apparatus 800 can acquire information on the current date and the current time by referring to the MH-TOT and the TOT.

  Also, in general, when the video combining unit 861 mainly selects the video information etc. output from the MMT decoding processing unit 841, the information on the current date and current time acquired from the MH-TOT is When superimposing on video information and the like and the video combining unit 861 mainly selects the video information and the like output from the MPEG2-TS decoding processing unit 842, the information on the current date and current time acquired from the TOT is Control may be performed so as to be superimposed on video information and the like.

  However, since there is a difference in encoding processing / decoding processing, transmission path, etc. between the broadcast service that adopted MMT as the media transport method and the broadcast service that adopted MPEG2-TS as the media transport method, the current time display is particularly In the above, there is a possibility that a mismatch occurs between the selection of a broadcast service adopting MMT as a media transport method and the selection of a broadcast service adopting MPEG2-TS as a media transport method. For example, as shown in FIG. 25, an EPG for displaying channel information of a broadcast service adopting MPEG2-TS as a media transport method from an EPG screen 162g for displaying channel information of a broadcast service adopting MMT as a media transport method When the screen display is switched to the screen 162h, there is a possibility of causing the user to feel visual discomfort due to a mismatch due to the display of the current time being switched from the current time display 162g1 to the current time display 162h1.

  In the broadcast receiving apparatus 800 according to the present embodiment, even in the case where the video combining unit 861 mainly selects the video information etc. output from the MMT decoding processing unit 841 in order to prevent the visual discomfort of the user. The control unit is controlled to superimpose information on the current date and current time acquired from the TOT on the video information and the like. That is, control is performed so as to superimpose current time information provided by a broadcast service adopting MPEG2-TS as a media transport method on content of a broadcast service adopting MMT as a media transport method.

  By performing the control, when displaying the current time, the broadcast receiving apparatus 800 of the present embodiment always displays the current time information acquired with reference to the TOT. Therefore, even when switching between a broadcast service adopting MMT as the media transport method and a broadcast service adopting MPEG2-TS as the media transport method, the user is reminded of the visual discomfort due to the inconsistency of the display of the current time. It is possible to prevent the

  FIG. 26 shows an example of selection control of the current time information reference source according to the reception status of each broadcast service in the broadcast receiving apparatus 800 of the present embodiment. In the broadcast receiving apparatus 800 of the present embodiment, when it is possible to receive a broadcast service adopting MPEG2-TS as the media transport method, the current time information is always obtained by referring to the TOT. The MH-TOT can be used only when it is not possible to receive a broadcast service that uses MPEG2-TS as a media transport method, and it is possible to receive a broadcast service that uses MMT as a media transport method. Control to obtain current time information with reference to.

  Also, contrary to the control described above, the current time information provided by the broadcast service adopting MMT as the media transport method is superimposed on the content of the broadcast service adopting MPEG2-TS as the media transport method. Even if it controls, the same effect as the above-mentioned is acquired.

  Note that, as described above, control is performed so that the current time information provided by the broadcast service that employs MPEG2-TS as the media transport method is superimposed on the content of the broadcast service that employs MMT as the media transport method. In the case of controlling so that the present time information provided by the broadcast service which adopted MMT as media transport method is superimposed on the contents of the broadcast service which adopted MPEG2-TS as media transport method Also in the second embodiment, the current time information can be corrected by referring to the "delta" parameter of the time information in the TMCC extended information area, as described in [Time management of broadcast receiving apparatus] in the first embodiment. It is possible.

[EPG display on broadcast receiver]
Event schedule information of a broadcasting service adopting MMT as a media transport method is transmitted by MH-EIT or the like. On the other hand, event schedule information of a broadcasting service adopting MPEG2-TS as a media transport method is transmitted by EIT (Event Information Table) or the like provided in SI defined in the MPEG-2 system. Therefore, generally, when displaying video information and the like provided by a broadcast service adopting MMT as a media transport method, event schedule information (MH-EIT of a broadcast service adopting MMT) Event information of a broadcasting service that employs the MPEG2-TS when the video information etc. provided by the broadcasting service that employs the MPEG2-TS as a media transport method can be acquired. (EIT) can be obtained.

  However, the broadcast receiving apparatus 800 of the present embodiment can also display the video information etc. provided by the broadcasting service adopting MMT as the media transport method, or the MPEG2-TS as the media transport method. Even when displaying video information and the like provided by a broadcasting service that adopts the above, it is possible to obtain both the MH-EIT and the EIT, and improve the usability for the user.

  FIG. 27A shows an example of an EPG screen in the broadcast receiving apparatus 800 of this embodiment. In the figure, the EPG screen 162i is an EPG screen created based on the MH-EIT of a broadcasting service adopting MMT as a media transport method, and "M1 TV", "M2 broadcasting", "M3 channel", "M4TV" “TV M5” and the like are the broadcasting station names of a broadcasting service adopting MMT as a media transport method. Also, the EPG screen 162 j is an EPG screen created based on EIT of a broadcast service adopting MPEG2-TS as a media transport method, and “T6 TV”, “T7 broadcast”, “T8 channel”, “T9 TV” , “TV TA”, etc. are the broadcasting station names of the broadcasting service that adopts MPEG2-TS as a media transport method.

  For example, when a user operates a remote control (not shown) to instruct display of an EPG screen while viewing a broadcast program provided by a broadcast service that employs MMT as a media transport method, an initial screen of the EPG screen (shown Omitted) is displayed. The initial screen of the EPG screen is an EPG screen created on the basis of MH-EIT of a broadcasting service adopting MMT as a media transport method, and "17:00 to 17:00 of October 7, 2014 (Today)". The detailed information of the broadcast program of each channel of (the vicinity of the current time) is displayed. Next, the user desires to confirm detailed information of the broadcast program of each channel of "20 o'clock 〜" of "October 9, 2014", and operates the remote controller (not shown) to instruct the update of the EPG screen Then, the EPG screen 162i is displayed.

  Furthermore, when the user desires to confirm detailed information of a broadcast program provided by a broadcast service adopting MPEG2-TS as a media transport method, and instructs the network switching by operating a remote controller (not shown), the EPG Screen 162 j is displayed. At this time, in the broadcast receiving apparatus 800 of the present embodiment, an initial screen of an EPG screen created based on EIT of a broadcast service adopting MPEG2-TS as a media transport method (that is, “Oct. 7, 2014 "Detailed information of the broadcast program of each channel of" 17 o'clock ... "), and the same time zone of the same day as the EPG screen 162i displayed immediately before (ie," 20 o'clock ... of "October 9, 2014" Control to display the detailed information of the broadcast program of each channel.

  By the control described above, the user can continuously confirm detailed information on broadcast programs of the same day and the same time zone of a plurality of networks with different media transport methods by a simple operation. That is, the usability of the broadcast receiving apparatus 800 is improved.

  FIG. 27B is a diagram showing an example different from the above-mentioned of the EPG screen in the broadcast receiving apparatus 800 of the present embodiment. The EPG screen 162k shows a state in which the screen is scrolled in the channel direction (horizontal direction) by the operation of the remote controller (not shown) from the state where the EPG screen 162i shown in FIG. 27A is displayed. That is, in the example shown in FIG. 27B, by scrolling the EPG screen in the channel direction (horizontal direction), channel information and media created based on MH-EIT of a broadcast service adopting MMT as a media transport scheme Channel information created on the basis of EIT of a broadcast service adopting MPEG2-TS as a transport method is seamlessly displayed on the same time axis.

  Therefore, while the user confirms the channel information created based on the MH-EIT of the broadcast service that adopts MMT as the media transport method, the user creates based on the EIT of the broadcast service that adopts MPEG2-TS as the media transport method Even when it is desired to confirm the acquired channel information, it is possible to eliminate the need for an instruction to switch the network by the operation of a remote controller (not shown). Furthermore, the user can simultaneously check detailed information on broadcast programs on the same day and the same time zone of a plurality of networks of different media transport methods. That is, the usability of the broadcast receiving apparatus 800 is improved.

(Example 3)
The third embodiment of the present invention will be described below. The configuration, effects, and the like in this embodiment are the same as in Embodiment 1 unless otherwise noted. Therefore, in the following, the difference between the present embodiment and the first embodiment will be mainly described, and the description of the common points will be omitted as much as possible in order to avoid duplication.

[System configuration]
FIG. 28 is a system configuration diagram showing an example of a broadcast communication system including the broadcast receiving apparatus of the present embodiment. The broadcast communication system of this embodiment includes a broadcast reception apparatus 20100, an antenna 20100a, a connection cable 20200, a monitor apparatus 20300, a broadband network 200 such as the Internet and a router apparatus 200r, a radio tower 300t of a broadcast station and a broadcast satellite (or communication satellite). 300 s, broadcast station server 300, service provider server 400, and other application servers 500. Although illustration is omitted, the access point 200a, the mobile telephone communication server 600, the base station 600b of the mobile telephone communication network, and the portable information terminal 700 are similar to the system configuration of the broadcast communication system in the first embodiment. Furthermore, you may have. In that case, the portable information terminal 700 may be capable of direct communication with the broadcast receiving apparatus 20100 without the intervention of the router apparatus 200 r or the like.

  The broadcast receiving apparatus 20100 receives the broadcast wave transmitted from the radio tower 300t via the broadcast satellite (or communication satellite) 300s and the antenna 20100a. Alternatively, the broadcast wave transmitted from the radio tower 300t may be received directly from the antenna 20100a without passing through the broadcast satellite (or communication satellite) 300s. Also, the broadcast receiving apparatus 20100 can be connected to the Internet 200 via the router apparatus 200 r, and can transmit and receive data by communication with each server apparatus on the Internet 200 and other communication devices.

  The connection cable 20200 is a communication cable that connects the broadcast receiving apparatus 20100 and the monitor apparatus 20300, and transmits encoded video / audio data and the like output from the broadcast receiving apparatus 20100. The monitor device 20300 receives video information and audio information obtained by performing decoding processing and the like on encoded video / audio data and the like received via the connection cable 20200 via a display device such as a liquid crystal panel and a speaker. , A video display device provided to the user.

[Hardware configuration of broadcast receiving apparatus]
FIG. 29A is a block diagram showing an example of the internal configuration of the broadcast receiving apparatus 20100. As shown in FIG. The broadcast receiving apparatus 20100 includes a main control unit 101, a system bus 102, a ROM 103, a RAM 104, a storage (storage) unit 110, a LAN communication unit 121, an expansion interface unit 124, a digital interface unit 20125, a tuner / demodulation unit 131, and a separation unit 132. , Video decoder 141, video color gamut converter 142, audio decoder 143, character super decoder 144, subtitle decoder 145, subtitle synthesizer 146, subtitle color gamut converter 147, data decoder 151, cache unit 152, application controller 153, The browser unit 154, the application gamut conversion unit 155, the sound source unit 156, the video synthesis unit 161, the video output unit 163, the voice synthesis unit 164, the voice output unit 166, the operation input unit 170, and the transcode processing unit 20181 . The transcode processing unit 20181 may be expressed as a coding method conversion unit, a multiplexing method conversion unit, a transport method conversion unit, a data string conversion unit, a data configuration conversion unit, or the like.

  The broadcast receiving apparatus 20100 in this embodiment is an optical disk drive recorder such as a DVD recorder, a magnetic disk drive recorder such as an HDD recorder, an STB, or the like. That is, as compared with the broadcast receiving apparatus 100 of the first embodiment, the monitor unit 162 and the speaker unit 165 may be omitted. Also, the transcode processing unit 20181 is a signal processing unit that performs transcode arithmetic processing for converting the encoding format, bit rate, media transport method, and the like of each component constituting the content. For example, the transcode processing unit 20181 is configured to output an MMT data string of a content of a broadcast program including a video component in the MPEG-H HEVC format output from the separation unit 132 in the MPEG-2 or MPEG-4 AVC (Advanced Video Coding) format. It is possible to convert into a MPEG2-TS data string or the like of program content including a video component. The program content subjected to the transcode arithmetic processing can be stored in the storage (storage) unit 110 as recorded content, or can be output from the digital interface unit 20125 etc. and supplied to an external monitor device etc. Shall be

[Software configuration of broadcast receiver]
FIG. 29B is a software block diagram of the broadcast receiving apparatus 20100 according to this embodiment, showing the software construction of the ROM 103, the RAM 104, and the storage unit 110. As compared with the software configuration of the broadcast receiving apparatus 100 according to the first embodiment, it is assumed that the transcode program 21003 is added to the storage unit 110. The transcode program 21003 stored in the storage (storage) unit 110 is expanded in the RAM 104, and the main control unit 101 executes the expanded transcode program to configure a transcode execution unit 21103. The transcode execution unit 21103 mainly controls transcode operation processing in the transcode processing unit 20181.

  Further, the reception function execution unit 1102 expanded in the RAM 104 is assumed to have an output control unit 21102 i. The output control unit 21102i of the reception function execution unit 1102 controls data output in the video output unit 163, the audio output unit 166, and the digital interface unit 20125.

[Hardware configuration of monitoring device]
FIG. 30 is a block diagram showing an example of the internal configuration of the monitor device 20300. As shown in FIG. The monitor device 20300 includes a main control unit 20301, a system bus 20302, a ROM 20303, a RAM 20304, a storage unit 20310, an expansion interface unit 20324, a digital interface unit 20325, a LAN communication unit 20326, an MMT decoding processing unit 20341, and an MPEG2-TS decoding processing unit 20342. And a video synthesis unit 20361, a monitor unit 20362, a voice synthesis unit 20364, a speaker unit 20365, and an operation input unit 20370.

  Main control unit 20301, system bus 20302, ROM 20303, RAM 20304, storage unit 20310, expansion interface unit 20324, digital interface unit 20325, LAN communication unit 20326, MMT decoding processing unit 20341, MPEG2-TS decoding processing unit 20342, video combining unit 20361 The monitor unit 20362, the voice synthesis unit 20364, the speaker unit 20365, the operation input unit 20370, and the like are the main control unit 801, the system bus 802, the ROM 803, the RAM 804, the storage unit 810, and the expansion interface in the broadcast receiving apparatus 800 of the second embodiment. The unit 824, the digital interface unit 825, the LAN communication unit 821, the MMT decoding processing unit 841, the MPEG2-TS decoding processing unit 842, the video combining unit 861 Monitor 862, the speech synthesis unit 864, a speaker portion 865, operation input unit 870 is assumed to have equal and equivalent.

  That is, compared with the broadcast receiving apparatus 800 of the second embodiment, the monitor device 20300 of the present embodiment has a first tuner / demodulation unit 831, a second tuner / demodulation unit 832, a video output unit 863, an audio output unit 866, Etc. may be omitted. The monitor device 20300 has the same configuration as the broadcast reception device 800 of the second embodiment, that is, a first tuner / demodulator 831, a second tuner / demodulator 832, a video output unit 863, an audio output unit 866, etc. The configuration may not be omitted. The configuration may be similar to that of the broadcast receiving apparatus 100 of the first embodiment. The configuration may be such that the LAN communication unit 121 and the tuner / demodulation unit 131 are omitted from the broadcast receiving apparatus 100 of the first embodiment. Other configurations may be used.

[Interface configuration of broadcast receiver and monitor]
FIG. 31 is a system configuration diagram showing an example of the interface configuration between the broadcast receiving apparatus 20100 and the monitor apparatus 20300. In the present embodiment, the connection terminal whose illustration of the digital interface unit 12125 on the broadcast receiving apparatus 20100 is omitted and the connection terminal whose illustration of the digital interface unit 20325 on the monitor apparatus 20300 are not connected are connected by the connection cable 20200. Will be described.

  The connection cable 20200 includes n pairs of differential transmission lanes of CH1 to CHn and a Display Data Channel (DDC) line standardized by Video Electronics Standard Association (VESA) and a Hot Plug Detect (HPD) as shown in the figure. ), A CEC (Consumer Electronics Control) line, and the like. The n pairs of differential transmission lanes may be one pair of clock lanes and (n-1) pairs of data lanes. One pair of clock lanes and one pair of data lanes (i.e., n = 2) may be used. As described above, when n = 2, the differential transmission lane portion may be serial transmission. Although illustration is omitted, a power supply line, a GND line and a spare line may be further included. CEC lines may be omitted.

  In the data lane, a digital video (R / G / B / Vsync / Hsync) / a signal from the video synthesis unit 161 and the voice synthesis unit 164 via the transmission processing unit 20125b of the digital interface unit 20125 on the broadcast receiving apparatus 20100 side. Audio signals, control signals and the like may be output in a predetermined parallel transmission format. Alternatively, encoded video / audio data such as an MMT data string or an MPEG2-TS data string, or program data including a control signal may be output from the separation unit 132 or the transcode processing unit 20181 in a predetermined serial transmission format. . The digital video / audio signal, control signal, etc., or the program data, etc. including the encoded video / audio data, control signal, etc. are received by the reception processing unit 20325 b of the digital interface unit 20325 on the monitor device 20300 side Processing (including decoding processing and the like in the case of encoded video / audio data, program data including a control signal, etc.), and output from the monitor portion 20362 and the speaker portion 20365.

  The MMT data string may be a data flow of continuous MMTP packets. A data flow of an IP packet in which an MMTP packet is stored in the payload portion, which may further include time information in the NTP packet format, or an IP packet data flow not including time information in the NTP packet format. It is good.

  Also, the transmission processing unit 20125b of the digital interface unit 20125 on the broadcast receiving apparatus 20100 side communicates with the reception processing unit 20325b of the digital interface unit 20325 on the monitoring apparatus 20300 side via the DDC line, and further from the EDID storage unit 20325c. It is possible to read data of Extended Display Identification Data (EDID). That is, the broadcast receiving apparatus 20100 can grasp the performance and the function of the monitoring apparatus 20300 by acquiring the EDID.

  As an example of the performance and functions of the monitor device 20300 that can be grasped at this time, in the present embodiment, in addition to the items such as the input resolution, refresh rate and video standard that can be supported by the monitor device 20300 Whether it has a function that can cope with the decoding process of the image processing, whether it has a function that can cope with the decoding process of the MPEG2-TS data string, or a function that can cope with the network communication process It shall include items such as no.

  The process of acquiring the EDID is to acquire information indicating a function of the monitor device 20300, a performance of the monitor device 20300, a function that the monitor device 20300 can handle, and the like (hereinafter referred to as "function identification information"). It is described as an example of the process of That is, in order to grasp the display performance of the monitor device 20300, a method other than reading the data of the EDID may be used. For example, data indicating display performance is adopted as function identification information in a unique format different from EDID data, and the function identification information is received from digital interface unit 20325 on the monitor device 20300 side to digital interface unit 20125 on the broadcast reception device 20100 side. It may be transmitted to

  In addition to the above “function identification information” such as the EDID, “operation state information” indicating whether or not a predetermined function of the monitor device 20300 is currently operable is broadcasted from the digital interface unit 20325 on the monitor device 20300 side. It may be transmitted to the digital interface unit 20125 on the receiving device 20100 side. For example, even if the monitor device 20300 has a function compatible with network communication processing, the network communication network used by the network communication function itself has an environment in which communication is impossible for some reason, etc. There may be situations where each function can not achieve the desired performance. In such a case, the broadcast reception device 20100 is notified of the state of each function of the monitor device 20300 by transmitting operation state information indicating whether or not the function of the monitor device 20300 can normally operate. Is possible. The notification process is performed by the main control unit 101 of the broadcast receiving apparatus 20100 and the main control unit 20301 of the monitoring apparatus 20300 exchanging data via the transmission control unit 20125a, the CEC line of the connection cable 20200, and the reception control unit 20325a. You may do it.

  Also, the transmission control unit 20125a of the digital interface unit 12125 on the broadcast receiving apparatus 20100 side controls the transmission processing unit 20125b, and the reception control unit 20325a of the digital interface unit 20325 on the monitor apparatus 20300 side via the HPD line. By communication, it is possible to detect that the monitor device 20300 is connected, that the power of the monitor device 20300 is turned on, and the like. Note that the reception control unit 20325 a of the digital interface unit 20325 on the monitor device 20300 side also controls the reception processing unit 20325 b.

  The configuration of the connection cable 20200 shown in FIG. 31, the internal configuration of the digital interface unit 12125 of the broadcast receiving apparatus 20100, and the internal configuration of the digital interface unit 20325 of the monitoring apparatus 20300 are merely examples. The hardware of the digital interface uses DVI terminal, HDMI (registered trademark) terminal, Display Port (registered trademark) terminal, MHL terminal, etc., and conforms to DVI specification, HDMI specification, Display Port specification, MHL specification, Super MHL etc. Output of data and input of data in specifications or extended specifications are possible. Alternatively, the data may be output or input in the form of serial data conforming to the IEEE 1394 specification or the like.

  The functions of the digital interface unit 12125 on the broadcast receiving apparatus 20100 side and the functions of the digital interface unit 20325 on the monitor device 20300 side described above may be realized by communication via hardware such as Ethernet or wireless LAN. In that case, an IP interface may be configured using the LAN communication unit 121 instead of the digital interface unit 12125 on the broadcast receiving apparatus 20100 side, and using the LAN communication unit 20326 instead of the digital interface unit 20325 on the monitor apparatus 20300 side. . After using the IP protocol that can communicate between the LAN communication unit 121 and the LAN communication unit 20326, the “function identification information” and the “operation state information” described above may be transmitted and received between the two. According to this configuration, if there is a LAN environment in which the broadcast receiving apparatus 20100 and the monitoring apparatus 20300 can be used, it is not necessary to separately connect both by a digital interface.

  The digital interface and the IP interface described above may use either wired transmission or wireless transmission.

[Data output control of broadcast receiver]
Hereinafter, an example of data output control of the broadcast receiving apparatus 20100 will be described.
(A) Output Control According to Decoding Processing Performance of Output Destination Device FIGS. 32A and 32B show connection cables when the broadcast receiving device 20100 of this embodiment receives a broadcast service adopting MMT as a media transport method. 18 shows an example of data output control according to the decoding processing performance for an MMT data string or an MPEG2-TS data string of an output destination apparatus connected via a LAN connection. In the present embodiment, the connection cable 20200 will be described as an example of the connection cable, and the monitor device 20300 will be described as an example of the output destination device.

  The output control unit 21102i of the broadcast receiving apparatus 20100 according to the present embodiment first monitors the monitor apparatus 20300 which is the output destination apparatus via the DDC line of the connection cable 20200 and the transmission processing unit 20125b and the transmission control unit 20125a of the digital interface unit 20125. Function identification information such as EDID data stored in the EDID storage unit 20325c.

  The identification result of the function of the output destination apparatus using the acquired function identification information will first be described using FIG. 32A.

  For example, when the monitor device 20300 which is the output destination device has the configuration shown in FIG. 30, the monitor device 20300 is provided with both the decoding process of the MMT data string and the decoding process of the MPEG2-TS data string. In this case, in principle, such a device stores function identification information that can be identified as being compatible with both the MMT data stream decoding process and the MPEG2-TS data stream decoding process.

  Next, in the configuration of the monitor apparatus 20300 shown in FIG. 30, the output destination apparatus has only one of the decoding process of the MMT data string and the decoding process of the MPEG2-TS data string and does not have the other. In principle, function identification information that can be identified as having only the MMT data stream decoding process and not having the MPEG2-TS data stream decoding process, or only the MPEG2-TS data stream decoding process can be used for the MMT data stream It stores function identification information that can be identified as having no decryption processing.

  In addition, in the case where the output destination device is an apparatus that can be connected to the broadcast receiving device 20100 by an interface but has neither MMT data string decoding processing nor MPEG2-TS data string decoding processing, in principle, MMT data string decoding It stores function identification information that can be identified as neither processing nor decoding processing of an MPEG2-TS data string.

  Also, exceptionally, even if the broadcast receiving apparatus 20100 acquires the function identification information stored in the output destination apparatus, the correspondence or non-response to the decoding processing of the MMT data string and the decoding processing of the MPEG2-TS data string In some cases, the status of can not be identified. Note that this also includes the case where acquisition of the function identification information stored in the output destination device fails.

  FIG. 32A shows the case where the function identification process for the decoding process of the MMT data string or the decoding process of the MPEG2-TS data string in the output destination apparatus is performed based on the function identification information acquired by the broadcast receiving apparatus 20100 from the output destination apparatus. The identification results of are indicated as "correspondence", "non-correspondence", and "unidentifiable". Then, output control examples 1 to 3 which are output control examples of the broadcast receiving apparatus 20100 with respect to these identification results are described.

  First, “MMT data output” shown in the output control examples 1 to 3 of FIG. 32A will be described. In the case of "MMT data output", the output control unit 21102i of the broadcast receiving apparatus 20100 causes the separation unit 132 to output the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132 as it is, and digitalizes the MMT data sequence as it is. Control is performed so that output is possible to the monitor device 20300 which is the output destination device via the interface unit 20125. Alternatively, after transcoding processor 20181 performs bit rate conversion processing or the like on the MMT data string output from separation unit 132 to reduce the data amount, the MMT data string is again set to the digital interface unit 20125. It may be controlled to be able to output to the monitor device 20300 via In this case, in the monitor device 20300, the MMT data string transmitted from the broadcast reception device 20100 is received by the digital interface unit 20325, and the MMT decoding processing unit 20341 performs decoding processing etc. on the received MMT data string. Furthermore, video information and audio information are provided to the user via the monitor unit 20362 and the speaker unit 20365.

  Next, “MPEG2-TS data output” shown in the output control examples 1 to 3 of FIG. 32A will be described. 32A, in the case of “MPEG2-TS data output”, the output control unit 21102 i of the broadcast receiving apparatus 20100 outputs the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132 from the separation unit 132 as it is. Then, the MMT data string is converted to an MPEG2-TS data string by the media transport method conversion processing in the transcode processing unit 20181, and then the monitor device 20300 which is the output destination device via the digital interface unit 20125. Control to be able to output to In the monitor device 20300, the digital interface unit 20325 receives the MPEG2-TS data string transmitted from the broadcast receiving device 20100, and the MPEG2-TS data processing unit 20342 decodes the received MPEG2-TS data string. Processing and the like are performed, and further, video information and audio information are provided to the user via the monitor unit 20362 and the speaker unit 20365.

  In the case of the “MPEG2-TS data output” described above, it is desirable to perform the following processing in the processing of converting the MMT data string into the MPEG2-TS data string in the transcode processing unit 20181. That is, DTS (Decoding Time Stamp) serving as a decoding reference of encoded video / audio data included in PES (Packetized Elementary Stream) of an MPEG2-TS data string or MPEG2-PS (Program Stream) data string, or PTS serving as a playback reference Time information such as (Presentation Time Stamp) may be generated by referring to the control information of the MMT data string in the conversion process of the media transport method in the transcode processing unit 20181.

  Specifically, the DTS includes the “mpu_presentation_time” parameter of the MPU time stamp descriptor shown in FIG. 13B and the “mpu_decoding_time_offset” parameter, “timescale” parameter, “pts_offset” of the MPU extended time stamp descriptor shown in FIG. ] It should just generate with reference to a parameter, etc. Further, the PTS may be generated with reference to the generated DTS, the “dts_pts_offset” parameter and the “timescale” parameter of the MPU extended time stamp descriptor shown in FIG. Furthermore, a PCR (Program Clock) necessary for generation of STC (System Time Clock) serving as a reference clock for decoding / reproducing processing of encoded video / audio data included in the PES of the MPEG2-TS data string or the MPEG2-PS data string. Reference) and SCR (System Clock Reference) may be generated based on time information output by the receiver-side reception system clock described with reference to FIG. 7C of the first embodiment.

  By each process described above, it is possible to control the decoding time and the presentation time for each presentation unit of the video / audio signal even in the MPEG2-TS data stream converted from the MMT data stream by the conversion process of the media transport method.

  In addition, the MPT of the program to be output designates a plurality of video assets, and the MPU presentation area designating descriptor allows layouts, devices, and / or components to be transmitted by LCT as shown in FIGS. 19B, 19C, and 19D. Or, if it is associated with a region, in the conversion process of the MMT data string to the MPEG2-TS data string in the transcode processing unit 20181, which video asset data is included in the MPEG2-TS data and output Is a problem. In this case, the video asset to be included in the MPEG2-TS data and output may be determined based on the correspondence between the layout, device, area, and video asset specified by the LCT. For example, conversion processing was performed on a video asset associated with device number 0 (device_id: 0) and region number 0 (region_number: 0) described in FIG. 19B and FIG. 19C among layouts transmitted by LCT The transcoding processor 20181 may generate an MPEG2-TS data string including data. In this case, video data based on video assets associated with other device numbers or area numbers may not be included in the output target MPEG2-TS data string.

  In addition, when priority is specified in advance for the plurality of video assets, the video asset with the highest priority is selected and converted to the MPEG2-TS data string regardless of the device number or area number. You may The video asset displayed in the area selected by the user may be selected and converted into an MPEG2-TS data string.

  It returns to the explanation of FIG. 32A. In any of the output control examples 1 to 3 of FIG. 32A, when one decoding process is “corresponding” and the other decoding process is “non-corresponding” or “unidentifiable”, the decoding process identified as “corresponding” Output data string in the format of When both of the decoding processes are “non-compliant” or “unidentifiable”, “following output control example 4” is set in any of the output control examples 1 to 3 in FIG. 32A. The output control example 4 will be described later with reference to FIG. 32B. Then, the control differs between the output control examples 1 to 3 in FIG. 32A in the case where both decoding processes are identified as “corresponding”.

  In the output control example 1, when both decoding processes are identified as “corresponding”, “MMT data output” is performed. In this case, in the monitor device 20300, higher-level processing such as layout control than “MPEG2-TS output” can be realized.

  In the output control example 2, when both of the decoding processes are identified as “corresponding”, “MPEG2-TS output” is performed. In this case, since the data processed by the output destination device is the conventional MPEG2-TS, the amount of processing at the output destination device is reduced.

  In output control example 3, when both decoding processes are identified as "corresponding", whether "MMT data output" is performed or "MPEG2-TS output" is performed according to the priority set in the broadcast receiving apparatus 20100 Decide what to do. The "set priority" is, for example, a setting in which one output format is selected as a default at shipment, or after that, the user re-selects one output format by a menu operation via the operation input unit or the like. It means that it follows the setting of the setting re-selected. In this case, it is possible to output in a data format in accordance with the user's intention.

  Next, output control (output control example 4) in the case where both decoding processes are “non-compliant” or “unidentifiable” will be described using FIG. 32B. FIG. 32B shows that the identification result in the case where the broadcast receiving apparatus 20100 has performed the function identification process for the decoding process of the MMT data string in the output destination apparatus and the decoding process for the MPEG2-TS data string is "non-compliant" The example of the output control with respect to the combination of an identification result in a certain case is shown (the output control example 4-A1-the output control example 4-E).

  The output control example 4-A1 is an example in which the data string of any form is "not output" when the identification result is "non-compliant" or "unidentifiable". If it corresponds in this way, possibility that the malfunction etc. which are not assumed at least in the output destination apparatus arise can be reduced.

  In the output control example 4-A2 to A4, if the both decoding processes are “not compatible” in the identification result, “do not output”, but at least one of the two decoding processes is not “not compatible” but “identification In the case of "impossible", the output destination apparatus can output the data in a data format corresponding to the decoding process in which the identification result is not "incompatible" but "indistinguishable" by the idea that the output device may be able to cope with the decoding process It is something to do. In the output control examples 4-A2 to A4, although the output control of “unidentifiable” is different for both decoding processes in the identification result, the concept of the output control at this time is the same as that of the output control examples 1 to 3 of FIG. The description is the same as in the case where both decoding processes are “corresponding” in the identification result, and thus the description is omitted.

  In the output control example 4-B1, when the above-mentioned two decoding processes are respectively "non-compliant" or "unidentifiable" in the identification result, "MPEG2-TS output" is performed in any case first. For example, in the case where the output destination device is not a monitor device but a relay device connected between the monitor device 20300 and the broadcast receiving device 20100, such as a video distribution device, etc. There may be a connection environment in which both decryption processes become "non-compliant".

  In the output control example 4-B1 assuming such a case, even if the discrimination result of the above two decoding processes is "non-correspondence" or "unidentifiable", "MPEG2-TS output" for the time being. This is an example of control that is performed.

  Assuming that the output control example 4-C1 is the same, "MMT output" is performed for the time being, even if the identification results of the above two decoding processes are "non-compliant" or "unidentifiable". Control example.

  The output control example 4-B2 and the output control example 4-C2 are modifications of the output control example 4-B1 and the output control example 4-C1, respectively, and one of the two decoding processes is "unidentifiable" in the identification result. In the case where the other is “non-compliant”, this is an example of preferentially outputting the data format corresponding to the decoding process that has become “unidentifiable”. By modifying in this manner, the possibility that the processing at the output destination can be performed is improved to some extent than the output control example 4-B1 and the output control example 4-C1.

  The output control example 4-D is an example in which “output according to the set priority” is performed when the identification results of the two decoding processes are “non-corresponding” or “unidentifiable”. The process of “output according to the set priority order” has already been described in the output control example 3 of FIG.

  The output control example 4-E performs a process of presenting a message prompting the user to select a data output method when the discrimination result of the two decoding processes is “non-compliant” or “unidentifiable”, and the operation input unit It is possible to make the user select the data output method by the operation via 170.

  In this case, how to present the message to the user is an issue, for example, a display connected via the video output unit 163 which is different from the output destination device connected to the digital interface unit 12125 in FIG. 29A. The apparatus may display an image in which the above message is superimposed. The broadcast receiving apparatus 20100 may be provided with a sub monitor (not shown in FIG. 29A) for displaying various messages to be sent to the user to display the above messages. Alternatively, the message may be transmitted and displayed on the portable information terminal 700 cooperating with the broadcast receiving apparatus 100. Alternatively, only the voice message (voice data) having the same content as the message may be transmitted to the output destination device, and the user may be prompted to select the data output method via the speaker of the output destination device.

  In the broadcast receiving apparatus 20100 of this embodiment, by adopting any of the output control examples described with reference to FIGS. 32A and 32B, the output destination apparatus connected via the connection cable of the digital interface or the LAN connection It is possible to perform data output control according to the decoding processing performance for the MMT data string and the MPEG2-TS data string.

  In addition, even if any of the above output control is set at the time of shipment, the setting of the output control of the output data format under each condition can be changed by the manual setting by the menu operation of the user via the operation input unit 170. It is desirable to configure as follows. Even when a special device not assumed is used as the output device, or a malfunction of the software of the broadcast receiving device 20100 itself or the device of the output device, etc., a normal identification result can not be obtained in the function identification process of the output device. This is because, by configuring so as to obtain the data output that the user needs by manual setting, it is possible to prevent the disadvantage to the user.

(B) Output control according to the network communication performance of the output destination apparatus and the network communication situation When receiving the broadcast service adopting MMT as the media transport method in the broadcast receiving apparatus 20100 of this embodiment, as shown in FIGS. 34A and 34B. An example of the data output control according to the network communication processing performance of the output destination apparatus and the network communication condition which were connected via the connection cable or LAN connection is shown. In the present embodiment, the connection cable 20200 will be described as an example of the connection cable, and the monitor device 20300 will be described as an example of the output destination device.

  The output control unit 21102i of the broadcast receiving apparatus 20100 according to the present embodiment first monitors the monitor apparatus 20300 which is the output destination apparatus via the DDC line of the connection cable 20200 and the transmission processing unit 20125b and the transmission control unit 20125a of the digital interface unit 20125. Function identification information such as EDID data stored in the EDID storage unit 20325c.

  For example, when the monitor device 20300 is configured to have the LAN communication unit 20326 as shown in FIG. 30, or when it additionally has other network communication functions (eg, 3G communication function, LTE communication function, etc.) In principle, such a device stores function identification information that can be identified as being compatible with the network communication function. In particular, when the broadcast receiving apparatus 20100 and the output destination apparatus are connected by LAN connection, they have a network communication function.

  Also, as in the case of FIGS. 32A and 32B, exceptionally, even if the broadcast receiving apparatus 20100 acquires the function identification information stored in the output destination apparatus, the network communication function is not supported or supported. In some cases, the status of can not be identified.

  FIG. 34A shows “Correspondence”, “Non-correspondence” when the function identification processing for the network communication function in the output destination device is performed based on the function identification information acquired by the broadcast receiving device 20100 from the output destination device. , "I can not identify". Then, an example of output control of the broadcast receiving apparatus 20100 for these identification results is described.

  If the result of the identification process is "corresponding", the output control unit 21102i of the broadcast receiving apparatus 20100 performs a process of "output without mixing data acquired by the network communication function". Specifically, the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132 can be output as it is from the separation unit 132, and can be output to the monitor device 20300 which is the output destination device via the digital interface unit 02125. To do control. At this time, even when data to be acquired from a network communication path different from the broadcast wave received via the tuner / demodulator 131 is specified in the location information included in the MPT included in the MMT data string, The MMT data string acquired from the broadcast wave received via the tuner / demodulator 131 is output to the monitor device 20300 without mixing the data acquired from the network communication path.

  In the monitor device 20300, the MMT data string transmitted from the broadcast reception device 20100 is received by the digital interface unit 20325. Furthermore, when data acquired from the network communication path is designated in the location information included in the MPT included in the MMT data string in the monitor device 20300, etc., it is stored in a predetermined server device on the network as necessary. The related data is acquired via the LAN communication unit 20326, and the MMT decoding processing unit 20341 performs decoding processing and the like on the MMT data string received from the broadcast receiving apparatus 20100 and the acquired related data, and further The video information and the audio information are provided to the user via the monitor unit 20362 and the speaker unit 20365.

  On the other hand, when the result of the identification process is "non-compliant", in the location information included in the MPT, data acquired from a network communication path different from the broadcast wave received via the tuner / demodulator 131 is specified. When outputting the existing MMT data string, the output control unit 21102i of the broadcast receiving apparatus 20100 performs control to "mix and output the data acquired by the network communication function". Specifically, related data acquired from the predetermined server apparatus on the network indicated by the location information via the LAN communication unit 121 and the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132 Control is performed to generate a mixed MMT data string.

  In the data string mixing process, the separation unit 132 separates data strings while separating related data acquired via the LAN communication unit 121 and each data of the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132. It can be realized by sorting. In addition, as another method, a transcoding process is performed on data string conversion processing that rearranges related data acquired via the LAN communication unit 121 and the MMT data string input from the tuner / demodulation unit 131 to the separation unit 132. It may be realized by performing in part 20181.

  Further, control is performed so that the new MMT data string generated in this manner can be output to the monitor device 20300 which is the output destination device via the digital interface unit 12125. In the monitor device 20300, the digital interface unit 20325 receives the mixed data transmitted from the broadcast receiving device 20100, and the MMT decoding processing unit 20341 performs decoding processing and the like on the received mixed data, and further monitors the mixed data. The video information and the audio information may be provided to the user through the portion 20362 and the speaker portion 20365.

  According to the process of FIG. 34A, when the output destination apparatus is an apparatus compatible with the network communication process, mixing process of MMT data string acquired through the broadcast wave and data acquired through the route through the network On the destination device. In this way, the processing time in the broadcast receiving apparatus 20100 is reduced, so that the delay in reproduction in the output destination apparatus can be reduced. On the other hand, when the output destination device is not a device compatible with the network communication processing, the broadcast receiving device 20100 performs the above mixing processing and then outputs it to the output destination device. In such a case, even with a monitor device having no network communication function, advanced video, audio, and the like that use both an MMT data string acquired via a broadcast wave and data acquired via a route via a network. It is possible to provide presentation services such as data to the user.

  Further, as a result of the identification processing, when “identification impossible” is performed, the same output control as “non-correspondence” may be performed. Even if the output destination device does not have a network communication function, it provides advanced video, audio, data and other presentation services that use both MMT data strings acquired via broadcast waves and data acquired via routes via networks. It is to raise the possibility of being able to do it.

  According to the output control of FIG. 34A described above, suitable output processing can be realized based on whether or not the network communication processing in the output destination device can be supported.

  Here, the details of the process of mixing the related data acquired through the LAN communication unit 121 and the MMT data string acquired through the tuner / demodulation unit 131 in the above-described broadcast receiving apparatus 20100 will be described below. .

  For example, as shown in FIG. 35, it is assumed that a package constituting a broadcast service is composed of video asset A, audio asset A, data asset A, video asset B, audio asset B and data asset B. Also, the video asset A, the audio asset A and the data asset A are distributed by IP data flow (broadcast signal) included in the TLV stream transmitted by the broadcast wave, and the video asset B, the audio asset B and the data asset B are distributed. It is assumed that the data is distributed by IP data flow (communication line) from a predetermined server device via a network communication path such as a communication line. The video asset B, audio asset B, and data asset B are event package descriptors of MH-EIT included in the control signal (MMT-SI) included in the IP data flow (broadcast signal) transmitted in the TLV stream (see FIG. 21 and the package ID of the MPT (corresponding to the “MMT_package_id_byte” parameter shown in FIG. 17) and location information (corresponding to the “MMT_general_location_info ()” shown in FIG. 17) Makes it possible to refer.

  Therefore, in the broadcast receiving apparatus 20100 of this embodiment, the IP data flow (broadcast signal) is referred to by referring to the control signal (MMT-SI) of the IP data flow (broadcast signal) transmitted in the TLV stream. Related, it becomes possible to obtain an IP data flow (communication line) distributed via the communication line. Furthermore, a digital interface unit is configured as one IP data flow (output signal) by mixing processing the data string of each asset of the IP data flow (broadcast signal) and the data string of each asset of the IP data flow (communication line). It becomes possible to output from 20125.

  Also, at this time, the broadcast receiving apparatus 20100 of this embodiment rewrites the location information included in the MPT. Specifically, for example, location information on each asset of the IP data flow (communication line) is multiplexed into “location_type = 0x01” or an IPv6 data flow indicating that the data is multiplexed into the IPv4 data flow. It is preferable to rewrite from "location_type = 0x02" indicating that the data is present to "location_type = 0x00" indicating that the data is multiplexed in the same IP data flow as the MPT. The monitor device 20300 acquires the video asset B, the audio asset B and the data asset B with reference to the IP data flow (output signal) acquired through the communication line 20200 by the rewriting process of the location information of the MPT. Is possible.

  Next, as a modification of the output control of FIG. 34A, not only the network communication function identification processing using the function identification information but also output control using network communication state information indicating the network communication enabled / disabled state of the output destination device An example is described using FIG. 34B. In the output control example of FIG. 34B, the broadcast receiving apparatus 20100 acquires network communication state information in addition to the function identification information from the output destination apparatus via the connection cable or the LAN connection. At this time, as in the case of FIG. 34A, there are three types of “response”, “non-support”, and “unidentifiable” as the identification result of the network communication processing using the function identification information. This is the same as FIG. 34A, so the description is omitted. On the other hand, the network communication state information includes "communication enable state" and "communication disable state", and as a result of the identification process in the broadcast receiving apparatus 20100, the information may be "unidentifiable". The network communication status information may be in a state in which a control unit or the like in the output destination apparatus can communicate with its own network communication function (it is not necessary to perform communication itself at this time), or it can not communicate. It should be generated by judging whether it is or not.

  As in the case of FIG. 34A, the options of the output mode selectively executed in the output control of FIG. 34B are a combination of “output without mixing data acquired by the network communication function” and “data acquired by the network communication function”. Output). The details of the control of the both are as described above, so the description is omitted.

  In the output control of FIG. 34B, it is identified by the identification result of the function identification information that the output destination device is “corresponding” to the network communication function, and that the network communication state information indicates the “communicable state”. When it is determined, control is performed to “output without mixing data acquired by the network communication function”. In this case, it is possible to perform the mixing process in the output destination device. The network communication status information indicates “communicable status” when it is determined that “unidentifiable” is whether or not the output destination device supports the network communication function according to the identification result of the function identification information. When it is identified that there is, it may be configured to perform control to “output without mixing data acquired by the network communication function”. In this case, based on the result that the network communication state information indicates the “communicable state”, the network communication function that has become “unidentifiable” can be appropriately estimated based on the idea that it is “corresponding”. This is to increase the possibility of processing.

  On the other hand, when the identification result of the function identification information indicates that the output destination device is “incompatible” with the network communication function, the “network communication function is selected regardless of the identification result of the network communication state information. Control to mix and output the data acquired in step. This is because there is very little possibility that the destination device can perform the mixing process. Further, when the identification result of the network communication state information indicates the "incommunicable state", control is performed to "mix and output the data acquired by the network communication function" regardless of the identification result of the function identification information. Also in this case, the possibility of being able to perform mixing processing in the output destination device is very low. Finally, if the identification result of the network communication status information indicates "unidentifiable", the possibility of the mixing process being able to be performed by the output destination apparatus is opaque, so "the data acquired by the network communication function are mixed and output" Control to

  According to the output control of FIG. 34B described above, suitable output processing can be realized based on whether or not network communication processing can be performed in the output destination device and the operation state of network communication processing in the output destination device.

  Even if the output control shown in FIG. 34A or FIG. 34B is set at the time of shipment, the output control of the output data format under the respective conditions is performed by manual setting by the menu operation of the user via the operation input unit 170. It is desirable to configure to be able to change the settings. Even if a normal identification result can not be obtained for the network communication state of the output destination device due to a defect in the software of the broadcast receiving device 20100 itself or the output destination device, the data output required by the user can be obtained manually. By configuring, it is possible to prevent the disadvantage to the user.

  According to the above process, in the broadcast receiving apparatus 20100 of this embodiment, it is possible to perform data output control according to the network communication processing performance and the network communication status of the monitor apparatus connected via the connection cable or the LAN connection. Become.

  As described above, according to the broadcast receiving apparatus 20100 of this embodiment, it is possible to perform output control according to the information on the display performance of the monitor apparatus acquired from the monitor apparatus connected by the connection cable or the LAN connection. It is possible to provide a broadcast receiver capable of performing functions that are possible, that is, higher value added.

  As mentioned above, although the example of embodiment of this invention was demonstrated using Examples 1-3, the structure which implement | achieves the technique of this invention is not restricted to the said Example, A various modified example can be considered. For example, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. These are all within the scope of the present invention. Further, numerical values, messages, etc. appearing in sentences and figures are merely examples, and the effects of the present invention are not impaired even if different ones are used.

  The functions and the like of the present invention described above may be realized in hardware by designing part or all of them, for example, by an integrated circuit. The program may be realized by software by the microprocessor unit or the like interpreting and executing an operation program for realizing the respective functions or the like. Hardware and software may be used together.

  The software for controlling the broadcast receiving apparatus 100 may be stored in advance in the ROM 103 and / or the storage unit 110 of the broadcast receiving apparatus 100 at the time of product shipment. It may be acquired from the other application server 500 or the like on the Internet 200 via the LAN communication unit 121 after product shipment. Also, the software stored in a memory card, an optical disc, or the like may be acquired via the expansion interface unit 124 or the like.

  Further, control lines and information lines shown in the drawing indicate those which are considered to be necessary for explanation, and not all control lines and information lines on the product are necessarily shown. In practice, almost all configurations may be considered to be mutually connected.

  DESCRIPTION OF SYMBOLS 100, 800, 20100 ... Broadcast receiving apparatus, 100a, 20100a ... Antenna, 101, 801 ... Main control part, 102, 802 ... System bus, 103, 803 ... ROM, 104, 804 ... RAM, 110, 810 ... Storage part, 121, 821 ... LAN communication unit, 124, 824 ... extended interface unit, 125, 825, 20125 ... digital interface unit, 131, 831, 832 ... tuner / demodulation unit, 132 ... separation unit, 141 ... video decoder, 142 ... video Color gamut converter 143 Audio decoder 144 Character super decoder 145 Subtitle decoder 146 Subtitle compositor 147 Subtitle color gamut converter 151 Data decoder 152 Cache section 153 Application controller , 154 ... browser section, 155 ... application Color gamut conversion unit 156: sound source unit 161, 861: video synthesis unit 162, 862: monitor unit 163, 863: video output unit 164, 864: voice synthesis unit 165, 865: speaker unit 166 , 866 ... voice output unit, 170, 870 ... operation input unit, 20181 ... transcode processing unit, 841 ... MMT decoding processing unit, 842 ... MPEG 2-TS decoding processing unit, 200 ... Internet, 200 r ... router device, 200 a ... access Point, 300t ... radio tower, 300s ... broadcast satellite (or communication satellite), 300 ... broadcast station server, 400 ... service provider server, 500 ... other application server, 600 ... mobile telephone communication server, 600b ... base station, 700 ... portable information terminal, 20200 ... connection cable, 20300 ... mo The other apparatus.

Claims (4)

A broadcast receiver,
A digital broadcast receiving unit that receives a digital broadcast in which content is transmitted;
A network communication unit capable of network communication;
A data string conversion processing unit capable of generating a new data string by mixing the data string of the content received by the digital broadcast receiving unit and the data string acquired by the network communication unit;
Digital interface that can communicate with external devices,
A control unit,
Equipped with
The broadcast receiving apparatus can acquire performance information of the external device and information on a network communication state of the external device via the digital interface,
The control unit
When the received content is output from the digital interface to the external device, according to the performance information of the external device acquired via the digital interface and information on the network communication state of the external device
Whether a new data string generated by mixing the data string of the content received by the digital broadcast receiving unit and the data string acquired by the network communication unit by the data string conversion processing unit is output from the digital interface, A broadcast receiving apparatus, which switches whether to output a data string in a state in which the mixing processing is not performed from the digital interface. The media transport method of the content received by the digital broadcast receiving unit is an MMT method,
The broadcast receiving apparatus according to claim 1, wherein a media transport system of the new data string output from the digital interface is also an MMT system. A content output method from a broadcast receiving apparatus to an external device via a digital interface,
Receiving the digital broadcast in which the content is transmitted;
A network communication step of performing network communication;
A data string conversion step capable of generating a new data string by mixing the data string of the content received in the receiving step of receiving the digital broadcast and the data string acquired in the network communication step;
An input / output step of communicating with an external device and outputting the content via the digital interface;
Equipped with
At the input / output step,
When the received content is output from the digital interface to the external device, according to the performance information of the external device acquired via the digital interface and information on the network communication state of the external device
The new data string generated by mixing the data string of the content received in the receiving step and the data string acquired in the network communication step in the data string converting step is output from the digital interface or the mixing process The content output method which switches whether the data string of the state which does not perform is output from the said digital interface. The media transport method of the content received in the receiving step is the MMT method,
The content output method according to claim 3, wherein a media transport method of the new data string output from the digital interface in the input / output step is also an MMT method.

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