JP6790218B2 - Data output method - Google Patents

Description

The present invention relates to a data output method.

One of the extended functions of the digital broadcasting service is data broadcasting, which transmits digital data by broadcasting waves and displays various information such as weather forecasts, news, and recommended programs. Many television receivers capable of receiving data broadcasting are already on the market, and many technologies related to data broadcasting reception have been published including the following Patent Document 1.

Japanese Unexamined Patent Publication No. 2001-186486

In response to recent changes in the environment related to content distribution, TV receivers are also required to expand various functions. In particular, there are many demands for distribution of contents and linked applications using a broadband network environment such as the Internet, and demands for high resolution / high definition of video contents. However, it is difficult to provide a high-value-added television receiver that can meet the above demand only by diverting only the data broadcasting receiving function or the like provided in the current television receiver or by expanding the function of the data broadcasting receiving function or the like. ..

An object of the present invention is to provide a broadcast receiving device capable of executing a function having higher added value.

As a means for solving the above-mentioned problems, the technique described in the claims is used.

As an example, the media transport format is a data output method for program content in a broadcast receiving device that receives program content transmitted by MMT, and MMT data in which the program content is stored via a broadcast transmission line. The MMT data includes a step of receiving the data and a first output step of outputting the MMT data to another device with the media transport format of the MMT, and the MMT data includes location information indicating the acquisition destination of the data constituting the program content. Is stored, and in the first output step, there is an output state in which the location information of the MMT is rewritten and output. In the rewriting process of the location information in the output state, the information indicating the acquisition destination on the external network is stored. The server function of the broadcast receiving device is rewritten to the information indicated as the acquisition destination, and further, the broadcasting receiving device receives a transmission request for data constituting the program content received from another device after the first output step. It is provided with a second output step of outputting the data constituting the program content stored in the storage unit provided in the device to another device.

By using the technique of the present invention, it is possible to provide a broadcast receiving device capable of executing a function having higher added value.

It is a system configuration diagram which shows an example of the broadcasting communication system including the broadcasting receiving apparatus which concerns on Example 1. FIG. It is explanatory drawing of the outline of the coded 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 broadcasting system using MMT. It is a hierarchical block diagram of control information used in a broadcasting system. It is a list of tables used in TLV-SI of a broadcasting system. It is a list of descriptors used in TLV-SI of a broadcasting system. It is a list of messages used in MMT-SI of a broadcasting system. It is a list of tables used in MMT-SI of a broadcasting system. It is a list of descriptors used in MMT-SI of a broadcasting system (No. 1). It is a list of descriptors used in MMT-SI of a broadcasting system (No. 2). It is a figure which shows the relationship between the data transmission of a broadcasting system and each table. It is a block diagram of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a block diagram of the logical plane structure of the presentation function of the broadcast receiving apparatus which concerns on Example 1. FIG. FIG. 5 is a system configuration diagram of clock synchronization / presentation synchronization of the broadcast receiving device according to the first embodiment. It is a software configuration diagram of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a block diagram of the broadcasting station server which concerns on Example 1. FIG. It is a block diagram of the service provider server which concerns on Example 1. FIG. It is a block diagram of the mobile information terminal which concerns on Example 1. FIG. It is a software configuration diagram of the mobile information terminal which concerns on Example 1. FIG. It is a figure which shows the data structure of MH-TOT of a broadcasting system. It is a figure which shows the format of the JST_time parameter of a broadcasting system. It is a figure which shows the calculation method of the present date from MJD of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a figure which shows the structure of the NTP format of a broadcasting system. It is a figure which shows the data structure of the MPU time stamp descriptor of a broadcasting system. It is a figure which shows the data structure of the time information of the TMCC extended information area of a broadcasting system. It is operation sequence diagram at the time of the channel scan of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a figure which shows the data structure of the TLV-NIT of a broadcasting system. It is a figure which shows the data structure of the satellite distribution system descriptor of a broadcasting system. It is a figure which shows the data structure of the service list descriptor of a broadcasting system. It is a figure which shows the data structure of AMT of a broadcasting system. FIG. 5 is an operation sequence diagram at the time of channel selection of the broadcast receiving device according to the first embodiment. It is a figure which shows the data structure of the MPT of a broadcasting system. It is a figure which shows the data structure of the LCT of a broadcasting system. It is a figure which shows the example of the layout assignment to the layout number based on LCT. It is a figure which shows the example of the layout assignment to the layout number based on LCT. It is a figure which shows the example of the layout assignment to the layout number based on LCT. It is a figure which shows the example of the layout assignment to the layout number based on LCT. It is a figure explaining the operation of exception handling of screen layout control based on LCT. It is a figure explaining the operation of exception handling of screen layout control based on LCT. It is a figure which shows the data structure of MH-EIT of a broadcasting system. It is a screen display figure of the EPG screen of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a screen display figure of the EPG screen of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a screen display figure of the EPG screen of the broadcast receiving apparatus which concerns on Example 1. FIG. It is a screen display figure at the time of the emergency warning broadcast display of the broadcast receiving device which concerns on Example 1. FIG. It is a block diagram of the broadcast receiving apparatus which concerns on Example 2. FIG. It is a figure explaining the inconsistency of the current time display at the time of switching a broadcasting service. It is a figure explaining the operation of the selection control of the present time information reference source which concerns on Example 2. FIG. It is a screen display figure of the EPG screen of the broadcast receiving apparatus which concerns on Example 2. FIG. It is a screen display figure of the EPG screen of the broadcast receiving apparatus which concerns on Example 2. FIG. It is a system block diagram of the broadcasting communication system which concerns on Example 3. FIG. It is a block diagram of the broadcast receiving apparatus which concerns on Example 3. FIG. It is a software configuration diagram of the broadcast receiving apparatus which concerns on Example 3. FIG. FIG. 5 is an interface configuration diagram of a broadcast receiving device and a monitoring device according to the third embodiment. It is a figure explaining the data structure of a broadcasting service. It is a figure explaining the data structure of a broadcasting service. It is a figure explaining the operation of the data output control of the broadcast receiving apparatus which concerns on Example 3. FIG. It is a figure explaining the data structure of a broadcasting service. It is a figure explaining the data structure of a broadcasting service. It is a figure explaining the operation of the data output control of the broadcast receiving apparatus which concerns on Example 3. FIG. It is a software configuration diagram of the broadcast receiving apparatus which concerns on Example 4. FIG. FIG. 5 is an interface configuration diagram of a broadcast receiving device and a monitoring device according to a fourth embodiment. It is a figure which shows the data structure of MH-AIT of a broadcasting system. It is a figure explaining the data structure of a broadcasting service.

Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings.

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

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

The router device 200r is connected to the Internet 200 by wired communication, is connected to the broadcast receiving device 100 by wired communication or wireless communication, and is connected to the mobile information terminal 700 by wireless communication. For the wireless communication, a method such as Wi-Fi (registered trademark) may be used. As a result, each server device and other communication devices on the Internet 200, the broadcast receiving device 100, and the portable information terminal 700 can mutually perform data transmission / reception via the router device 200r. The communication between the broadcast receiving device 100 and the mobile information terminal 700 may be directly performed by a method such as Bluetooth (registered trademark) or NFC (Near Field Communication) without going through the router device 200r.

The radio tower 300t is a broadcasting facility of a broadcasting station, and transmits broadcast waves including coded data of broadcast programs, subtitle information, other applications, general-purpose data, and the like. The broadcasting satellite (or communication satellite) 300s receives the broadcasting wave transmitted from the radio tower 300t of the broadcasting station, performs frequency conversion and the like as appropriate, and then broadcasts the broadcast to the antenna 100a connected to the broadcasting receiving device 100. It is a repeater that retransmits waves. Further, the broadcasting station shall include a broadcasting station server 300. The broadcasting station server 300 stores metadata such as broadcast programs (video contents, etc.), program titles, program IDs, program outlines, performer information, broadcast dates, etc. of each broadcast program, and stores the video contents and each metadata. , It shall be possible to provide to the service provider based on the contract. The moving image content and each metadata may be provided to the service provider through an API (Application Programming Interface) provided in the broadcasting station server 300.

The service provider server 400 is a server device prepared by the service provider, and is capable of providing various services linked to a broadcast program distributed from a broadcasting station. In addition, the service provider server 400 stores, manages, and distributes moving image contents and metadata provided by the broadcasting station server 300, various contents and applications linked to the broadcasting program, and the like. In addition, it shall also have a function of searching for available contents and applications and providing a list in response to inquiries from TV receivers and the like. The storage, management and distribution of the content and metadata and the storage, management and distribution of the application may be performed by different server devices. The broadcasting station and the service provider may be the same or different. A plurality of service provider servers 400 may be prepared for each different service. Further, the function of the service provider server 400 may be provided by the broadcasting station server 300.

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

The mobile information terminal 700 shall have a function of telephone communication (call) and data transmission / reception via a mobile telephone communication network and a function of wireless communication by Wi-Fi (registered trademark) or the like. The mobile 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 and the mobile telephone communication server 600 of the mobile telephone communication network, and can be connected to the Internet 200 on the Internet 200. It is possible to send and receive data by communicating with each server device and other communication devices. The access point 200a is connected to the Internet 200 by wired communication, and is connected to the mobile information terminal 700 by wireless communication. For the wireless communication, a method such as Wi-Fi (registered trademark) may be used. Communication between the mobile information terminal 700 and the broadcast receiving device 100 is performed via the access point 200a, the Internet 200, and the router device 200r, or through the base station 600b, the mobile telephone communication server 600, the Internet 200, and the router device 200r. It may be done through.

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

MPEG2-TS is characterized in that components such as video and audio that make up a program are multiplexed into one stream together with a control signal and a clock. Since it is treated as one stream including the clock, it is suitable for transmitting one content on one transmission line in which transmission quality is ensured, and has been adopted in many conventional digital broadcasting systems. On the other hand, MPEG2-TS functions in response to changes in the environment related to content distribution, such as the diversification of content in recent years, the diversification of devices that use content, the diversification of transmission lines that distribute content, and the diversification of content storage environments. The newly formulated media transport method is MMT because of its limitations.

FIG. 2A shows an example of an outline of the coded signal in the MMT of this embodiment. As shown in the figure, the MMT of the present embodiment has an MFU (Media Fragment Unit), an MPU (Media Processing Unit), an MMTP (MMT Protocol) payload, and an MMTP packet as elements constituting the coded signal. And. The MFU is a format at the time of transmission of video, audio, or the like, and may be configured in units of NAL (Network Operation 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 on encoded media data, and sample data which is encoded media data. Further, it is assumed that the MFU can be extracted from the sample data. Further, in the case of media such as a video component and an audio component, the presentation time and the decoding time may be specified for each MPU or access unit. 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 control information of MFU and MMT. The MMTP payload shall include a payload header according to the content (data unit) stored in the payload section. FIG. 2C shows an example of an outline of constructing an MFU from a video / audio signal, further storing it in an MMTP payload, and constructing an MMTP packet. In the video signal encoded by using the inter-frame prediction, it is desirable that the MPU is configured in GOP (Group Of Pictures) units. When the size of the MFU to be transmitted is small, one MFU may be stored in one payload unit, or a plurality of MFUs may be stored in one payload unit. Further, when the size of the MFU to be transmitted is large, one MFU may be divided and stored in a plurality of payload units. Further, the MMTP packet may be protected by using a technique such as AL-FEC (Appliation Layer Forward Error) or ARQ (Automatic Repeat Request) in order to recover the packet loss on the transmission path.

In the broadcasting 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) is used as the audio coding method. Coding) shall be used. Encoded data such as video and audio of a broadcast program encoded by each of the above methods is in the form of MFU or MPU, further put on an MMTP payload, converted into an MMTP packet, and transmitted as an IP (Internet Protocol) packet. And. Further, the data content related to the broadcast program may also be in the format of MFU or MPU, further mounted on the MMTP payload to form an MMTP packet, and transmitted as an IP packet. Data content transmission methods include subtitle / character super transmission method used for streaming data synchronized with broadcasting, application transmission method used for data transmission asynchronous with broadcasting, and synchronous / asynchronous message for applications running on TV receivers. Four types of event message transmission methods used for notification and general-purpose data transmission methods for transmitting other general-purpose data synchronously / asynchronously shall be prepared.

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

In the broadcasting 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 structure of a broadcast program and the like. It shall be in the form of an MMT control message, put on an MMTP payload, converted into an MMTP packet, and transmitted as an IP packet. The TLV-SI is control information related to IP packet multiplexing, and provides information for channel selection and correspondence information between an IP address and a service.

Further, even in a broadcasting system using MMT, time information is transmitted in order to provide an absolute time. In addition, while MPEG2-TS shows the display time of the component based on a different clock for each TS, MMT shows the display time of the component based on Coordinated Universal Time (UTC). To do. With these mechanisms, the terminal device can synchronously display the components transmitted from different transmission points on different transmission lines. In order to provide UTC, it is assumed that an IP packet in NTP (Network Time Protocol) format is used.

[Control information of broadcasting system using MMT]
In the broadcasting system supported by the broadcasting receiving device 100 of this embodiment, as described above, the control information includes TLV-SI related to the TLV multiplexing method for multiplexing IP packets and MMT which is the media transport method. Prepare the MMT-SI involved. The TLV-SI provides information for the broadcast receiving device 100 to demultiplex the IP packets multiplexed on the broadcast transmission line. The TLV-SI is composed of a "table" and a "descriptor". The "table" shall be transmitted in section format and the "descriptor" shall be placed within the "table". The MMT-SI is transmission control information indicating information related to the configuration of the MMT package and the broadcasting service. MMT-SI is composed of three layers: a "message" that stores "tables" and "descriptors", a "table" that has elements and attributes that indicate specific information, and a "descriptor" that indicates more detailed information. Shall be. FIG. 4 shows an example of the hierarchical structure of control information used in the broadcasting system of this embodiment.

<Table used in TLV-SI>
FIG. 5A shows a list of "tables" used in the TLV-SI of the broadcasting system supported by the broadcasting receiving device 100 of this embodiment. In this embodiment, the following TLV-SI "table" is used.

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

(2) AMT
The address map table (Addless Map Table: AMT) provides a list of multicast groups of IP packets that make up each service transmitted in the network.

(3) Tables set by the service provider In addition, it is possible to prepare a table set by the service provider or the like.

<Descriptor used in TLV-SI>
FIG. 5B shows a list of "descriptors" arranged in the TLV-SI of the broadcasting system supported by the broadcasting receiving device 100 of this embodiment. In this embodiment, the following is used as the "descriptor" of the TLV-SI.

(1) Service list descriptor The service list descriptor provides a list of services according to service identification and service 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 distinguish between broadcast and non-broadcast.

(4) Network name descriptor The network name descriptor describes the network name by character code.

(5) Descriptor set by the service provider In addition, it is possible to prepare a descriptor set by the service provider or the like.

<Message used in MMT-SI>
FIG. 6A shows a list of "messages" used in the MMT-SI of the broadcasting system supported by the broadcasting receiving device 100 of this embodiment. In this embodiment, the following is used as the "message" of MMT-SI.

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

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

(3) CA message The CA message is used to transmit a table for identifying the limited reception method.

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

(5) Data transmission message A data transmission message is a message that stores a table related to data transmission.

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

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

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

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

(3) LCT
The layout setting table (Layout Configuration Table: LCT) is used to associate the layout information for presentation with the layout number. The LCT may be stored in the PA message.

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

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

(6) CAT (MH)
The CA table (Conditional Access Table: CAT) (MH) is used to store descriptors for identifying the conditional access method. CAT (MH) may be stored in a CA message.

(7) DCM
The Download Control Message (DCM) transmits key-related information including a key for decrypting a transmission line code 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 regarding 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 information about the application, the startup state required for the application, and the like. 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 on broadcasters existing on the network. The MH-BIT may be stored in the M2 section message.

(12) MH-SDTT
The MH-Software Download Trigger Table (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
The MH-Service Description Table (MH-SDT) has a sub-table representing services included in a specific TLV stream, and information about the organization channel such as the name of the organization channel and the name of the broadcaster. To 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 (corrected Julian day) information. The MH-TOT may be stored in an M2 short section message.

(15) MH-CDT
The MH-Common Data Table (MH-CDT) is used to transmit common data to be stored in the non-volatile memory in a section format to 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 (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 from the structure for file transmission. The DDM table may be stored in the data transmission message.

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

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

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

(20) Table set by the business operator In addition, it is possible to prepare a table set by the service provider or the like.

<Descriptor used in MMT-SI>
6C and 6D show a list of "descriptors" arranged in the MMT-SI of the broadcasting system supported by the broadcasting receiving device 100 of this embodiment. Descriptors are control information that provides more detailed information and shall be placed in a table. The table in which the descriptor is placed may be determined according to the descriptor. In this embodiment, the following is used as the "descriptor" of MMT-SI.

(1) Asset group descriptor The asset group descriptor provides the group relationship of assets and the priority within the group. The asset group descriptor may be placed in the MPT.

(2) Event Package Descriptor The event package descriptor provides a 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. The 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 the presentation order in the MPU. The MPU timestamp descriptor may be placed in the MPT.

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

(7) Access control descriptor The access control descriptor provides information for identifying the limited reception method. The access control descriptor may be located in MPT or CAT (MH).

(8) Scramble method descriptor The scramble method descriptor provides information for identifying the encryption target and the type of the encryption algorithm at the time of scrambling. The scrambled descriptor may be located in MPT or CAT (MH).

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

(10) Emergency Information Descriptor (MH)
The emergency information descriptor (MH) is used when performing an emergency warning broadcast. The emergency information descriptor (MH) may be placed in the MPT.

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

(13) MH-HEVC Video Descriptor The MH-HEVC Video Descriptor is described in ITU-T Recommendation H.K. 265 | Used to describe the basic coding parameters of the ISO / IEC 2308-2 video stream (HEVC stream). The MH-HEVC video descriptor may be placed in the MPT.

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

(15) MH-Event Group Descriptor The MH-event group descriptor is used to indicate that a group of events is grouped when there is a relationship between a plurality of events. The MH-event group descriptor may be located 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. The MH-service list descriptor may be located in the MH-BIT.

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

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

(19) Video Component Descriptor The video component descriptor shows parameters and explanations related to the video component, and is also used to express the elementary stream in a character format. The video component descriptor may be placed in MPT or MH-EIT.

(20) MH-stream identification descriptor The MH-stream identification descriptor is used because the component stream of the service is labeled and the description content indicated by the video component descriptor in the MH-EIT can be referred to by this label. .. The MH-stream identification descriptor may be placed in the MPT.

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

(22) MH-Parent Rate Descriptor The MH-Parent Rate Descriptor represents an age-based viewing restriction and is used to extend to be based on other restriction conditions. The MH-parent rate descriptor may be placed in the MPT or MH-EIT.

(23) MH-Voice Component Descriptor The MH-Voice Component Descriptor indicates each parameter of the audio elemental stream and is also used to express the elementary stream in character format. The MH-voice component descriptor may be located in MPT or MH-EIT.

(24) MH-Target Area Descriptor The MH-Target Area Descriptor is used to describe a program or a region covered by some streams constituting the 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 in the MH-EIT.

(26) MH-SI transmission parameter descriptor The MH-SI transmission parameter descriptor is used to indicate the transmission parameter of SI. The MH-SI transmission parameter descriptor may be located in the MH-BIT.

(27) MH-Broadcaster Name Descriptor The MH-Broadcaster Name Descriptor describes the name of the broadcaster. The MH-broadcaster name descriptor may be placed in the MH-BIT.

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

(29) IP data flow descriptor The IP data flow descriptor provides information on the IP data flow that constitutes the service. The IP data flow descriptor may be located in the MH-SDT.

(30) MH-CA activation descriptor The MH-CA activation descriptor describes activation information for invoking a CAS program on the CAS platform. 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 a 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 about 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 encoding 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 placed in the EMT.

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

(38) MH-Local Time Offset Descriptor The MH-local time offset descriptor is used to give a constant offset value to the actual time (for example, UTC + 9 hours) and the display time to the human system when the daylight saving time is executed. The MH-local time offset descriptor may be located in the MH-TOT.

(39) MH-Component Group Descriptor The MH-Component Group Descriptor defines and identifies a combination of components in an event. The MH-component group descriptor may be located in the MH-EIT.

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

(41) MPU Extended Timestamp Descriptor The MPU Extended Timestamp Descriptor provides the decryption 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 the attribute information of the content downloaded by using the MPU. The MPU download content descriptor may be located in MH-SDTT.

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

(44) MH-Application Descriptor The MH-application descriptor describes information about the application. The MH-application descriptor may be located in the MH-AIT.

(45) MH-Transmission Protocol Descriptor The MH-Transmission Protocol Descriptor is used to specify a transmission protocol such as broadcasting or communication and to indicate the location information of an application depending on the transmission protocol. The MH-transmission protocol descriptor may be located in the MH-AIT.

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

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

(48) MH-Startup Priority Information Descriptor The MH-Startup Priority Information Descriptor is described to specify the start-up priority of the application. The MH-start priority information descriptor may be placed in the MH-AIT.

(49) MH-cache information descriptor The MH-cache information descriptor is described for use in cache control when the resources constituting the application are cached and held when the application is expected to be reused. .. The MH-cache information descriptor may be located in the MH-AIT.

(50) MH-Stochastic Application Delay Descriptor The MH-stochastic application delay descriptor is for delaying the timing of application control by the amount of delay set probabilistically, assuming the load distribution of server access for application acquisition. Describe in. The MH-stochastic application delay descriptor may be placed in 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 linked PU descriptor may be placed 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 placed 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 In addition, it is possible to prepare a descriptor set by the service provider or the like.

<Relationship between data transmission and each control information in the MMT method>
Here, the relationship between data transmission and a typical table in the broadcasting system supported by the broadcasting receiving device 100 of this embodiment will be described with reference to FIG. 6E.

In the broadcasting system supported by the broadcasting receiving device 100 of the present embodiment, data can be transmitted by a plurality of routes such as a TLV stream via a broadcasting transmission line and an IP data flow via a communication line. The TLV stream includes a TLV-SI such as TLV-NIT and AMT, and an IP data flow which is a data flow of an IP packet. The IP data flow includes a video asset including a series of video MPUs and an audio asset including a series of audio MPUs. Similarly, the IP data flow may include a subtitle asset including a series of subtitle MPUs, a character super asset including a series of character super MPUs, a data asset including a series of data MPUs, and the like. These various assets are associated with each other in units called "packages" by the MPT (MMT package table) stored and transmitted in the PA message. Specifically, the MPT has a package ID (corresponding to the “MMT_package_id_byte” parameter shown in FIG. 17 described later) and an asset ID of each asset included in the package (corresponding to the “asset_id_byte” parameter shown in FIG. 17 described later). Is described to make the association.

The assets that make up the package can be only the assets in the TLV stream, but as shown in FIG. 6E, the assets transmitted by the IP data flow of the communication line can also be included. 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 device 100 of the present embodiment refers to each asset. This can be achieved by making it recognizable. Specifically, by changing the value of the "MMT_general_location_infolocation_type" parameter arranged in the location information,
(1) Data multiplexed in the same IP data flow as MPT (location_type = 0x00)
(2) Data multiplexed in the IPv4 data flow (location_type = 0x01)
(3) Data multiplexed in the IPv6 data flow (location_type = 0x02)
(4) Data multiplexed on the broadcast MPEG2-TS (location_type = 0x03)
(5) Data multiplexed in MPEG2-TS format in the IP data flow (location_type = 0x04)
(6) Data at the specified URL (location_type = 0x05)
It is possible to configure the broadcast receiving device 100 so that various data transmitted through various transmission paths can be referred to.

Among the above-mentioned references, (1) is, for example, an IP data flow received via a digital broadcast signal received by the tuner / demodulation unit 131 of the broadcast receiving device 100 of FIG. 7A, which will be described later. When the MPT is also included in the IP data flow on the communication line side for transmission, the reference destination in (1) may be the IP data flow received by the LAN communication unit 121 described later via the communication line. Further, (2), (3), (5), and (6) are IP data flows received by the LAN communication unit 121, which will be described later, via a communication line. Further, (4) has a reception function for receiving a digital broadcast signal using the MMT method and a digital broadcast using the MPEG2-TS method, for example, as in the broadcast receiving device 800 of the second embodiment shown in FIG. 24 to be described later. In the case of a broadcast receiving device having both a receiving function for receiving a signal, digital broadcasting using the MPEG2-TS system is based on MPT location information (“MMT_general_location_info ()”) included in the digital broadcasting signal using the MMT system. It can be used to refer to the data multiplexed in the MPEG2-TS received by the receiving function for receiving the signal.

The data constituting the "package" is specified in this way, but in the broadcasting system supported by the broadcast receiving device 100 of this embodiment, a series of data in the "package" unit is converted into a "service" unit of digital broadcasting. Treat as.

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

In the data transmission method of this embodiment shown in FIG. 6E, there is a concept of "event". "Event" is a concept indicating a so-called "program" handled by MH-EIT included in an M2 section message and sent. Specifically, in the "package" indicated by the event package descriptor stored in the MH-EIT, the duration is from the disclosure time stored in the MH-EIT (corresponding to the "start_time" parameter shown in FIG. 21 described later). A series of data included in the period (corresponding to the “duration” parameter shown in FIG. 21 described later) is the data included in the concept of the “event”. MH-EIT performs various processes in the "event" unit in the broadcast receiving device 100 of the present embodiment (for example, program table generation process, recording reservation and viewing reservation control, copyright management process such as temporary storage). It can be used for such purposes.

[Hardware configuration of broadcast receiver]
FIG. 7A is a block diagram showing an example of the internal configuration of the broadcast receiving device 100. The broadcast receiving device 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 conversion unit 142, audio decoder 143, character super decoder 144, subtitle decoder 145, subtitle synthesis unit 146, subtitle color gamut conversion unit 147, data decoder 151, cache unit 152, application control unit 153, Consists of 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, a voice synthesis unit 164, a speaker unit 165, an audio output unit 166, and an operation input unit 170. Will be done.

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

The ROM (Read Only Memory) 103 is a non-volatile memory in which a basic operation program such as an operating system and other operation programs are stored. For example, a rewritable ROM such as an EEPROM (Electrically Erasable Program ROM) or a flash ROM can be used. Used. The ROM 103 may store the operation setting values necessary for the operation of the broadcast receiving device 100. The RAM (Random Access Memory) 104 serves as a work area for executing a basic operation program and other operation programs. The ROM 103 and the RAM 104 may be integrated with the main control unit 101. Further, the ROM 103 may not have an independent configuration as shown in FIG. 7A, but may use a partial storage area in the storage (storage) unit 110.

The storage (storage) unit 110 stores an operation program of the broadcast receiving device 100, an operation setting value, personal information of a user of the broadcast receiving device 100, and the like. In addition, an operation program downloaded via the Internet 200 and various data created by the operation program can be stored. In addition, contents such as moving images, still images, and sounds acquired from broadcast waves or downloaded via the Internet 200 can also be stored. A part of the function of the ROM 103 may be replaced by a part of the storage (storage) unit 110. Further, the storage unit 110 needs to hold the stored information even when the broadcast receiving device 100 is not supplied with power from the outside. Therefore, for example, a device such as a non-volatile semiconductor element memory such as a flash ROM or SSD (Solid State Drive), a magnetic disk drive such as an HDD (Hard Disk Drive), 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 expanded in function by a download process from each server device on the Internet 200.

The 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 and other communication devices on the Internet 200. In addition, the MMT data string (or a part thereof) of the program transmitted via the communication line shall be acquired. 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 is provided with a code circuit, a decoding circuit, and the like. Further, the broadcast receiving device 100 may further include other communication units such as a Bluetooth (registered trademark) communication unit, an NFC communication unit, and an infrared communication unit.

The tuner / demodulation unit 131 receives the broadcast wave transmitted from the radio tower 300t via the antenna 100a, and tunes (selects) the channel of the service desired by the user based on the control of the main control unit 101. Further, the tuner / demodulation unit 131 demodulates the received broadcast signal to acquire the MMT data string. In the example shown in FIG. 7A, a configuration in which one tuner / demodulation unit is used is illustrated, but the broadcast receiving device 100 uses the tuner / demodulation unit for the purpose of simultaneous display of a plurality of screens, counterprogram recording, or the like. It may be configured to mount multiple devices.

The separation unit 132 is an MMT decoder, and based on the control signal in the input MMT data string, the video data string, the audio data string, the character super data string, the subtitle data string, etc., which are real-time presentation elements, are set to the video decoder 141, respectively. , 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 can be a line. Further, the separation unit 132 reproduces the multimedia application and the file data which is a component thereof, and is temporarily stored in the cache unit 152. Further, the separation unit 132 extracts general-purpose data and outputs it to the data decoder 151 in order to use it for streaming data to a data or application used by a player that presents data other than video / audio subtitles. Further, 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 the video information. The video color gamut conversion unit 142 performs color space conversion processing on the video information decoded by the video decoder 141 for the video composition processing by the video synthesis unit 161 as necessary. The voice decoder 143 decodes the voice data string input from the separation unit 132 and outputs the voice information. Further, even if streaming data such as MPEG-DASH (MPEG-Dynamic Adaptive Streaming Over HTTP) format acquired from the Internet 200 via the LAN communication unit 121 is input to the video decoder 141 and the audio decoder 143. good. Further, a plurality of video decoder 141, video color gamut conversion unit 142, audio decoder 143, etc. may be provided in order 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 the character super information. The subtitle decoder 145 decodes the subtitle data string input from the separation unit 132 and outputs the subtitle information. The character super information output from the character super decoder 144 and the subtitle information output from the subtitle decoder 145 are combined by the subtitle composition unit 146, and further, the subtitle color gamut conversion unit 147 is used by the video composition unit 161. Color space conversion processing is performed as necessary for the video composition processing. In this embodiment, among the services centered on character information presented at the same time as the video of the broadcast program, those related to the content of the video are referred to as subtitles, and the other services are referred to as character supermarkets. To do. In addition, when they are not distinguished, they are collectively referred to as subtitles.

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

The video composition 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 color gamut conversion unit 155, and the like, and appropriately Performs processing such as selection and / or superimposition. The video synthesis 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. Further, the video synthesis unit 161 is an EPG (Electronic Program Guide) created based on information such as scaling processing and MH-EIT included in the MMT-SI, if necessary, based on the control of the main control unit 101. Performs screen information superimposition processing and the like. The monitor unit 162 is a display device such as a liquid crystal panel, and provides the user of the broadcast receiving device 100 with the video information selected and / or superimposed by the video synthesizing unit 161. The video output unit 163 is a video output interface that outputs video information that has been selected and / or superposed by the video synthesis unit 161.

The presentation function of the broadcast receiving device 100 of the present embodiment is provided with a logical plane structure in order to display the multimedia service as intended by the provider. FIG. 7B shows an example of the configuration of the logical plane structure provided in the presentation function of the broadcast receiving device 100 of this embodiment. In the logical plane structure, the character super plane for displaying the character super is arranged in the foreground, and the subtitle plane for displaying the subtitle is arranged in the next layer. A multimedia plane for displaying broadcast video, a multimedia application, or a composite video thereof is placed on the third layer, and a background plane is placed on the backmost side. The subtitle synthesis unit 146 and the video composition unit 161 draw the character super information on the character super plane, draw the subtitle information on the subtitle plane, and draw the video information, application information, and the like on the multimedia plane. Further, the background color is drawn on the background plane based on the LCT or the like included in the MMT-SI. It is assumed that a plurality of third-layer multimedia planes can be prepared according to 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 color 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 appropriately selects and / or performs processing such as mixing. The speaker unit 165 provides the user of the broadcast receiving device 100 with the audio information selected and / or mixed by the speech synthesis unit 164. The voice output unit 166 is a voice output interface that outputs voice information that has been selected and / or mixed by the voice synthesis unit 164.

The expansion interface unit 124 is a group of interfaces for expanding the functions of the broadcast reception device 100, and in this embodiment, it is configured to include an analog video / audio interface, a USB (Universal Serial Bus) interface, a memory interface, and the like. To do. The analog video / audio interface inputs analog video / audio signals from an external video / audio output device, outputs analog video / audio signals to an external video / audio input device, and the like. The USB interface connects to a PC or the like to send and receive data. A HDD may be connected to record broadcast programs and contents. You may also connect a keyboard or other USB device. The memory interface connects a memory card or other memory medium to send and receive data.

The digital interface unit 125 is an interface for outputting or inputting 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 / demodulation unit 131, the MMT data string acquired via the LAN communication unit 121, or the mixed data of each MMT data string 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. The output of the digital content stored in the storage (storage) unit 110 or the storage of the 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 DisplayPort (registered trademark) terminal, or the like, and data is output or input in a format compliant with the DVI specification, the HDMI specification, the DisplayPort specification, or the like. It may be something. It may be output or input in the form of serial data conforming to the IEEE1394 specifications and the like. Further, it may be configured as an IP interface that outputs a digital interface 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 operation instructions to the broadcast receiving device 100. In this embodiment, a remote controller receiving unit and a button switch for receiving commands transmitted from a remote controller (not shown) are arranged. It shall consist of operation keys. Only one of them may be used. Further, the operation input unit 170 may be replaced with a touch panel arranged on the monitor unit 162. A keyboard or the like connected to the expansion interface unit 124 may be used instead. The remote controller (not shown) may be replaced with a mobile information terminal 700 having a remote controller command transmission function.

As described above, when the broadcast receiving device 100 is a television receiver or the like, the video output unit 163 and the audio output unit 166 are not essential configurations in the present invention. Further, the broadcast receiving device 100 may be an optical disk drive recorder such as a DVD (Digital Versaille Disc) recorder, a magnetic disk drive recorder such as an HDD recorder, an STB (Set Top Box), or the like, in addition to a television receiver. It may be a PC (Personal Computer), a tablet terminal, a navigation device, a game machine, or the like having a digital broadcast reception function or a broadcast communication cooperation function. When the broadcast receiving device 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, the same operation as that of the broadcast receiving device 100 of this embodiment can be performed.

[System configuration for clock synchronization / presentation synchronization of broadcast receiver]
FIG. 7C is an example of a system configuration of clock synchronization / presentation synchronization in the broadcasting system supported by the broadcasting receiving device 100 of this embodiment. In the broadcasting system of this embodiment, the UTC is transmitted from the broadcasting transmitting system to a receiver (such as the broadcasting receiving device 100 of this embodiment) in a 64-bit length NTP time stamp format. In the NTP time stamp format, "more than a second" of UTC is represented by 32 bits, and "less than a second" is represented by 32 bits. However, in reality, it is difficult to reproduce 1 second with 32-bit accuracy. Therefore, the system clock for synchronizing the video system and the system clock for operating the NTP format clock include, for example, "2 to the 24th power" Hz (about 16.8 MHz) as shown in the figure. The frequency of may be used. Considering that the system clock in the conventional broadcasting system was 27 MHz and that the hardware configuration of the receiver can be easily constructed, the number of 2 is about "2 to the 24th power" to "2 to the 28th power". It is desirable to use the power frequency as the system clock.

When the system clock is set to a power frequency of 2 such as "2 to the 24th power" to "2 to the 28th power" on the broadcast transmission system side or the receiver side as described above, the signal is received from the broadcast transmission system side. In the NTP time stamp format transmitted to the machine side, the lower 8 to 4 bits that are not referred to by the PLL (Phase Locked Loop) system for reproducing the system clock or the NTP format clock are "0" or "1". It may be fixed to. That is, if the system clock is "2 to the nth root" Hz (n = 24 in the example of FIG. 7C), the lower "32-n" bit in the NTP time stamp format is fixed to "0" or "1". You may do so. Alternatively, the receiver may perform processing so as to ignore the lower "32-n" bits of the NTP time stamp format.

On the broadcast transmission system side, when the time information in NTP format is obtained from the outside, a PLL system is configured with a 32 + n-bit counter by a VCO (Voltage Controlled Oscillator) of "2 to the nth power" Hz, and the time information given from the outside is used. Realize a synchronous sending system clock. In addition, the entire signal processing system is operated in synchronization with the system clock of "2 to the nth root" Hz. Further, the output of the transmission system clock is periodically transmitted to the receiver side via the broadcast transmission line as NTP length format time information.

The receiver side receives the time information in the NTP length format via the broadcast transmission line, and reproduces the reception system clock by the PLL system based on the VCO of "2 to the nth power" Hz as in the broadcast transmission system side. As a result, the receiving system clock becomes a clock synchronized with the broadcasting transmitting system side. In addition, by operating the signal processing system of the receiver in synchronization with the system clock of "2 to the nth power" Hz, clock synchronization between the broadcast transmission system side and the receiver side 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 in the NTP format. Here, the MPU time stamp descriptor shown in FIG. 13B, which will be 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 of FIG. 13B indicates the sequence number of the MPU that describes the time stamp, and the "mpu_presentation_time (MPU presentation time)" parameter sets the MPU presentation time to 64-bit NTP. It is shown in time stamp format. Therefore, the receiver can refer to the MPU time stamp descriptor stored in the MPT and control the presentation (display, output, etc.) timing of each MPU such as video signal, audio signal, subtitle, and character superimpose. ..

When focusing on the decoding timing and the control of the presentation timing for each presentation unit of the above-mentioned video / audio signal, the video / audio signal is synchronized even with a clock of about "2 to the 16th power" Hz (about 65.5 KHz). Can be secured. In this case, the lower 16 bits of the NTP time stamp format described in the MPU time stamp descriptor or the like need not be referred to. That is, when a "2 m power" Hz clock generated by dividing the system clock or the like is used to control the decoding timing and the presentation timing, it is lower than the NTP time stamp format described in the MPU time stamp descriptor or the like. The "32-m" bit does not have to 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 device 100 of this embodiment, and shows the software configuration of the ROM 103, the RAM 104, and the storage (storage) unit 110. In this embodiment, the basic operation program 1001 and other operation programs are stored in the ROM 103, and the reception function program 1002 and other operation programs are stored in the storage (storage) unit 110. 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 required for accessing an external mobile terminal device and each server device. It is assumed to include an information storage area 1300 and various information storage areas for storing various other information.

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 form the basic operation execution unit 1101. Further, the reception function program 1002 stored in the storage (storage) unit 110 is also 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. To do. Further, the RAM 104 is provided with a temporary storage area for temporarily holding the data created at the time of executing each operation program as needed.

In the following, for the sake of simplicity, the main control unit 101 performs a process of controlling each operation block by expanding and executing the basic operation program 1001 stored in the ROM 103 in the RAM 104. It is described as assuming that the unit 1101 controls 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 device 100 in order to reproduce components such as video and audio transmitted by the broadcast system of this embodiment. In particular, the transport processing unit 1102a mainly controls the MMT decoder function of the separation unit 132, and distributes the video data string, the 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 1102c 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 1102d mainly controls the character super decoder 144. The subtitle processing unit 1102e mainly controls the subtitle decoder 145. The general-purpose data processing unit 1102f mainly controls the data decoder 151. The EPG generation unit 1102g interprets the description contents such as MH-EIT included in the MMT-SI and generates the EPG screen. Based on the logical plane structure, the presentation processing unit 1102h includes a video color gamut conversion unit 142, a subtitle synthesis unit 146, a subtitle color gamut conversion unit 147, an application color gamut conversion unit 155, a video synthesis unit 161 and a voice synthesis unit 164. Is mainly controlled.

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

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

The main control unit 301 is a microprocessor unit that controls the entire broadcasting station server 300 according to a predetermined operation program. The 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 broadcasting station server 300. The RAM 304 serves as a work area when each operation program is executed.

The storage unit 310 stores the basic operation program 3001, the broadcast content management / distribution program 3002, and the broadcast content transmission 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 contents and the like of each broadcast program broadcast by the broadcasting station. The metadata storage area 3300 stores metadata such as a program title, a program ID, a program outline, a performer, a broadcast date and time, and copy control information related to each program content of each broadcast program.

Further, the basic operation program 3001 and the broadcast content management / distribution program 3002 and the broadcast content transmission program 3003 stored in the storage unit 310 are each expanded in the RAM 304, and the main control unit 301 further executes each of the expanded programs. As a result, 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 explanation, the process of controlling each operation block by the main control unit 301 expanding the basic operation program 3001 stored in the storage unit 310 into the RAM 304 and executing the program is basically performed. It is described as assuming that the operation execution unit 3101 controls 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 of each broadcast program and each metadata stored in the broadcast content storage area 3200 and the metadata storage area 3300, and the program content and the like of each of the broadcast programs and each. Controls the provision of metadata to service providers based on contracts. Further, when the broadcast content management / distribution execution unit 3102 provides the program content and the like of each broadcast program and each metadata to the service provider, the service provider based on the contract is required. The authentication process of the server 400 may be performed.

The broadcast content transmission execution unit 3103 stores 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, and the like. Time schedule management and the like when transmitting the included MMT data string from the radio tower 300t via the digital broadcast signal transmission unit 360 is 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 is provided with a code circuit, a decoding circuit, and the like. The digital broadcast signal transmission unit 360 modulates an MMT data string composed of a video data string, an audio data string, a program information data string, etc. of the program content of each broadcast program stored in the broadcast content storage area 3200. , It is transmitted as a digital broadcast wave via the radio tower 300t.

[Service provider server configuration]
FIG. 9 is a block diagram showing an example of the internal configuration of the service provider server 400. The service provider server 400 is composed of 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. The 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. The RAM 404 serves as a work area when each operation program is executed.

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

Further, 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 in the RAM 404, respectively, and the main control unit 401 further expands the expanded basic operation program and the video. By executing the content management / distribution program and the application management / distribution program, the basic operation execution unit 4101, the video content management / distribution execution unit 4102, and the application management / distribution execution unit 4104 are configured.

In the following, in order to simplify the explanation, the main control unit 401 controls each operation block by expanding and executing the basic operation program 4001 stored in the storage unit 410 in the RAM 404. It is described as assuming that the operation execution unit 4101 controls each operation block. The same description is made for other operation programs.

The video content management / distribution execution unit 4102 acquires program contents and metadata of broadcast programs from the broadcasting station server 300, video contents and the like stored in the video content storage area 4200 and the metadata storage area 4300, and each metadata. And control the distribution of the video content and each metadata to each TV receiver. Further, the video content management / distribution execution unit 4102 performs authentication processing of each TV receiver and the like as necessary when distributing each video content and each metadata to each of the TV receivers. You may go. In addition, the application management / distribution execution unit 4104 manages each application stored in the application storage area 4400 and controls when the application is distributed in response to a request from each television receiver. Further, the application management / distribution execution unit 4104 may perform authentication processing of each television receiver as necessary when distributing each application to the television receivers.

The LAN communication unit 421 is connected to the Internet 200 and communicates with the broadcast receiving device 100 via the broadcasting station server 300 on the Internet 200 and the router device 200r. The LAN communication unit 421 is provided with a code 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 the mobile information terminal 700. The mobile 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, a voice processing unit 750, and a sensor unit 760. Consists of ,.

The main control unit 701 is a microprocessor unit that controls the entire mobile information terminal 700 according to a predetermined operation program. The 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 personal digital assistant 700.

The ROM 703 is a memory in which a basic operation program such as an operating system and other operation programs are stored, and a rewritable ROM such as an EEPROM or a flash ROM is used. The RAM 704 serves as a work area for 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 not have an independent configuration as shown in FIG. 10A, but may use a partial storage area in the storage unit 710.

The storage unit 710 stores the operation program and operation setting value of the mobile information terminal 700, the personal information of the user of the mobile information terminal 700, and the like. In addition, an operation program downloaded via the Internet 200 and various data created by the operation program can be stored. In addition, contents such as moving images, still images, and sounds downloaded via the Internet 200 can also be stored. A part of the function of the ROM 703 may be replaced by a part of the storage unit 710. Further, the storage unit 710 needs to hold the stored information even when the mobile information terminal 700 is not supplied with power from the outside. Therefore, for example, devices such as non-volatile semiconductor device memory such as flash ROM and SSD, magnetic disk drive such as HDD, and the like are used.

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

The communication processing unit 720 is composed of 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 and other communication devices on the Internet 200. The connection with the router device 200r and the access point 200a shall be made 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 it is 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 shall each include a code circuit, a decoding circuit, an antenna, and the like. Further, the communication processing unit 720 may further include other communication units such as a Bluetooth (registered trademark) communication unit and an infrared communication unit.

The expansion interface unit 724 is a group of interfaces for expanding the functions of the mobile information terminal 700, and in this embodiment, it is composed of a video / audio interface, a USB interface, a memory interface, and the like. The video / audio interface inputs video / audio signals from an external video / audio output device, outputs video / audio signals to an external video / audio input device, and the like. The USB interface connects to a PC or the like to send and receive data. You may also connect a keyboard or other USB device. The memory interface connects a memory card or other memory medium to send and receive data.

The operation unit 730 is an instruction input unit for inputting an operation instruction to the mobile information terminal 700. In this embodiment, the operation unit 730 is composed of a touch panel 730t arranged 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 by using a keyboard or the like connected to the extended interface unit 724. The mobile information terminal 700 may be operated by using a separate terminal device connected by wired communication or wireless communication. That is, the mobile information terminal 700 may be operated from the broadcast receiving device 100. Further, the touch panel function may be provided 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, and provides the user of the mobile 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. Further, the image signal processing unit 742 shall have a function of performing format conversion, menu and other OSD (On Screen Display) signal superimposition processing, etc., as necessary. The first image input unit 743 and the second image input unit 744 convert the light input from the lens into an electric signal by using an electronic device such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Sensor) sensor. , A camera unit that inputs image data of surroundings and objects.

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

The sensor unit 760 is a group of sensors for detecting the state of the portable information terminal 700. In this embodiment, the GPS receiver unit 761, the gyro sensor 762, the geomagnetic sensor 763, the acceleration sensor 764, the illuminance sensor 765, and the proximity sensor 766. Consists of ,. With these sensor groups, it is possible to detect the position, tilt, direction, movement, ambient brightness, proximity status of surrounding objects, and the like of the portable information terminal 700. Further, the portable information terminal 700 may further include other sensors such as a barometric pressure sensor.

The mobile 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. Further, it may be a digital still camera, a video camera capable of shooting a moving image, a portable game machine, a navigation device, or other portable digital device.

The configuration example of the mobile information terminal 700 shown in FIG. 10A includes many configurations that are not essential to this embodiment, such as the sensor unit 760, but the present embodiment even if the configuration is not provided with these. Does not impair the effect of. Further, configurations (not shown) such as a digital broadcast reception function and an electronic money payment function may be further added.

[Software configuration of mobile information terminal]
FIG. 10B is a software configuration diagram of the mobile information terminal 700 of this embodiment, and shows the software configuration of the ROM 703, the RAM 704, and the storage unit 710. In this 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. Further, the storage unit 710 includes a content storage area 7200 for storing contents such as moving images, still images, and sounds, and an authentication information storage area 7300 for storing authentication information and the like required for accessing a TV receiver and each server device. It shall be provided with various information storage areas for storing various other information.

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

In the following, for the sake of simplicity, the main control unit 701 performs a process of controlling each operation block by expanding the basic operation program 7001 stored in the ROM 703 into the RAM 704 and executing the basic operation. It is described as assuming that the unit 7101 controls each operation block. The same description is made for other operation programs.

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

Each of the operation programs may be stored in the ROM 703 and / or the storage unit 710 in advance at the time of product shipment. After the product is shipped, it may be acquired from another application server 500 or the like on the Internet 200 via the LAN communication unit 721 or the mobile telephone network communication unit 722. Further, each of the 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 management of broadcast receiver]
The broadcast receiving device of this embodiment has two types of time management functions. The first time management function is an NTP-based time management function, which has already been described with reference to FIG. 7C. The second time management function is a time management function based on MH-TOT, which is a time managed based on the time information transmitted by MH-TOT described with reference to FIG. 6B.

FIG. 13A shows an example of the configuration of time information transmitted by NTP. Further, an example of the data structure of the MPU time stamp descriptor is shown in FIG. 13B. The "reference_timestamp" parameter, "transmit_timestamp" parameter, etc. in the NTP format are time data in the NTP length format having a length of 64 bits, and the "mpu_presentation_time" parameter in the MPU time stamp descriptor is also a NTP time stamp having a length of 64 bits. It is the time data in the format. The time data in the NTP length format and the time data in the NTP time stamp format are data in which "more than a second" of UTC is represented by 32 bits and "less than a second" is represented by 32 bits. That is, the time information in the NTP format can transmit the time information up to "less than a second". Further, since the time information in the NTP format is expressed in UTC, unlike the clock management in the conventional digital broadcasting, as shown in FIG. 3B, the communication that can be received by the communication line path (for example, the LAN communication unit 121 in FIG. 7A). It can also be matched with the NTP included in the signal received by the line).

On the other hand, the information transmitted by MH-TOT is as follows. It is assumed that the broadcast receiving device 100 can acquire the current date and the Japanese standard time by MH-TOT. FIG. 11A shows an example of the data structure of MH-TOT. The broadcast receiving device 100 can acquire the current date and the current time from the "JST_time" parameter of the MH-TOT. As shown in FIG. 11B, the "JST_time" parameter has the lower 16 bits of the coded data of the current date by the modified Julian Date (MJD) and the Japanese standard time (Japan Standard Time: JST), which is 6-4. It is assumed to include 24-bit information represented by Bit Binary-Coded Decimal (BCD). The current date can be calculated by performing a predetermined operation on the 16-bit coded data of the MJD. The 6 4-bit 2-evolved decimal numbers represent "hours" in 2 decimal digits by 2 4-bit 2-evolved decimal numbers, and the following 2 4-bit 2-evolved decimal numbers represent decimal 2 The digits represent "minutes", and the last two 4-bit binary decimal numbers represent "seconds" in two decimal digits.

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

The broadcast receiving device 100 of this embodiment uses the time management function based on NTP, which is the time information in UTC notation, to decode and display the video, audio, subtitles, character super, and other presented data which are the contents of the broadcast signal. By using the above, more accurate synchronization processing can be realized. Furthermore, by referring to the information in the UTC notation instead of the clock notation of the broadcasting station, the video, audio, subtitles, character superimpose, or other data that is the content of the broadcasting signal received by the broadcasting signal can be acquired by the communication line path. It is also possible to perform decoding and display synchronization processing with video, audio, subtitles, superimpose, or other data.

Further, the broadcast receiving device of this embodiment presents the current time to the user with a time management function based on "JST_time" including 24-bit information represented by 6 4-bit binary coded decimal numbers of MH-TOT. It may be used for each process or each process for handling the MH-event information table (MH-EIT) described with reference to FIG. 6B. In general, in the process of presenting the current time to the user in the broadcast receiving device, accuracy of less than a second is rarely required. In addition, each time information described in the MH-event information table (MH-EIT) is represented by 6 4-bit binary coded decimal numbers, as in the conventional digital broadcast EIT transmitted by the MPEG2-TS method. The 24-bit information is stored in "hours", "minutes", and "seconds" in two decimal digits. Therefore, the time management function based on MH-TOT in the broadcast receiving device 100 of this embodiment is easy to match with the processing using MH-EIT. Specifically, the process using MH-EIT is a program table generation process (described later), a control of recording reservation and viewing reservation, a copyright management process such as temporary storage, and the like. This is because accuracy of less than seconds is rarely required for any of the processes, and accuracy of 1 second unit is sufficient.

In addition, the generation process of the program guide, the control of recording reservation and viewing reservation, and the copyright management process such as temporary storage are functions that are also installed in the receiver of the digital broadcasting system using the conventional MPEG2-TS method. .. Then, also in the broadcasting system of this embodiment, in the processing such as the generation processing of the program guide, the control of recording reservation and viewing reservation, and the copyright management processing such as temporary storage, the conventional MPEG2-TS system digital broadcasting system is used. If it is configured so that it can be handled by consistent time management processing, it constitutes a broadcast receiving device having both a conventional MPEG2-TS system digital broadcast receiving function and an MMT system digital broadcast receiving function. In these processes (processing such as program guide generation processing, recording reservation and viewing reservation control, copyright management processing such as temporary storage), it is not necessary to design processing algorithms separately, and the cost is low. can do.

Further, even if the receiver does not have the conventional MPEG2-TS system digital broadcast reception function but only the MMT system digital broadcast reception function, it can generate a program guide, control recording reservation and viewing reservation, and so on. Even if you do not create a completely new algorithm for processing such as copyright management processing such as temporary storage, you can use the algorithm of the function installed in the receiver of the digital broadcasting system using the conventional MPEG2-TS method. It can be developed at a lower cost.

Therefore, a configuration in which the time management function based on the "JST_time" parameter of MH-TOT is used for these processes (processing such as program guide generation processing, recording reservation and viewing reservation control, copyright management processing such as temporary storage). By doing so, even a broadcast receiving device for MMT type digital broadcasting can be provided at a lower cost by improving the consistency with the conventional type broadcasting system.

As described above, the broadcast receiving device 100 of the present embodiment includes a time management function using two types of time information having different accuracy. One time information is notation time information consistent with the conventional digital broadcasting system, the other time information is time information having a higher resolution than the one time information, and the latter time information is the broadcast signal. By using it for synchronization processing of each content data, more advanced information presentation processing than the conventional broadcasting system is realized, and the former time information is used for program guide generation processing, recording reservation and viewing reservation control, temporary storage, etc. A broadcast receiving device can be provided at low cost by using it for rights management processing and the like.

Therefore, the broadcast receiving device 100 of the present embodiment can achieve both the realization of more advanced information presentation processing and the cost reduction by providing the two types of time management functions described above.

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

In the first modification, in order to improve the accuracy of the management time of the NTP-based time management function already described with reference to FIG. 7C, the time management server (not shown) or the broadcasting station server 300 to the broadcasting receiving device 100 Information on the estimated delay time in time information transmission is included in the broadcast signal and transmitted, and the broadcast receiving device 100 is configured to use the information on the estimated delay time to correct the system clock of the time management function based on NTP. Is also good.

At this time, the information regarding the assumed delay time may be transmitted not in the TLV multiplexing stream shown in FIG. 3A but in the TMCC (Transmission and Multiplexing Configuration Control) region outside the TLV multiplexing stream. good. If the transmission is performed within the TMCC region, the broadcast receiving device 100 can extract information on the assumed delay time without going through the TLV multiplexed stream separation processing (demax processing). That is, it is possible to acquire information that is not easily affected by the delay due to the separation process in the broadcast receiving device 100, and therefore, it is possible to perform a highly accurate correction process of the system clock. An example of the data structure of the time information transmitted by the TMCC signal will be described with reference to FIG. 13C. The time information may be stored in the TMCC extended information area and transmitted, for example. In the time information of the TMCC extended information area of FIG. 13C, the "delta" parameter sets an estimated value of transmission delay from the time management server that distributes UTC or the server device that creates the TMCC signal to a general broadcast receiving device in 32 bits. Represented by the signed fixed-point of. The upper 16 bits describe the integer part, and the lower 16 bits describe the decimal point. The "transmit_timestamp" parameter is a transmission time stamp, and describes the time when the TMCC signal is transmitted from the server device in the NTP time stamp length format. The upper 32 bits represent the integer part, and the lower 32 bits represent the decimal point.

In the first modification, the broadcast receiving device 100 of the present embodiment stores the information related to the estimated delay time described in the time information transmitted in the TMCC extended information area (for example, the above-mentioned "delta"). The system clock of the NTP-based time management function used for the synchronization processing of each content data of the broadcast signal can be corrected with higher accuracy by using the parameter and / or the "transmission_time stamp" parameter).

[Second variant of time management]
Next, a second modification of time management in the broadcasting system of this embodiment will be described below.

As described above, the broadcast receiving device 100 of the present embodiment has a time management function of acquiring the current date and the Japanese standard time from the information transmitted by the MH-TOT and managing the time. The current date and the Japanese standard time acquired from the information transmitted by the MH-TOT are superimposed on the video information, application information, etc. by the video synthesis unit 161 of the broadcast receiving device 100, and thereby on the monitor unit 162 and 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 device 100 can acquire the current date and the current time from the “JST_time” parameter of the MH-TOT.

However, since only the lower 16 bits of the MJD encoded data are used in the above-mentioned "JST_time" parameter, digit overflow will occur on "April 22, 2038", and the predetermined calculation will occur. It is not possible to express the date after "April 23, 2038" by itself. Therefore, in the second modification of this embodiment, the date after "April 23, 2038" is expressed by switching the calculation method between the case where the value of MJD is equal to or more than the predetermined value and the case where the value is less than the predetermined value. It shall be controlled so that it can be done.

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 a 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 when the MJD is less than "32768". Calculates the current date using the second calculation method. The case where the MJD is less than "32768" is equivalent to the case where the most significant bit of the 16-bit data of the MJD is "0". As a result, in the broadcast receiving device 100 of this embodiment, it is possible to express the date after "April 23, 2038". However, the predetermined value can be arbitrarily set, and the predetermined value may be set to "16384 (0x4000)", "49152 (0xC000)", or the like. The switching condition of the calculation method may be that the upper 2 bits of the 16-bit data of the MJD are "00" and the upper 2 bits of the 16-bit data of the MJD are not "11". If the above-mentioned means is used with the predetermined value set to "32768", the date before "September 4, 1948" cannot be expressed, but there is no particular problem in practical use as a television receiver. ..

Further, instead of switching between the first calculation method and the second calculation method according to the comparison result between the MJD and the predetermined value, the "reserved" parameter in the MH-TOT data structure shown in FIG. 11A The first calculation method and the second calculation method may be switched according to a flag in which a part or all is replaced or a newly added flag. For example, the flag is set to "1" if the most significant bit of the 16-bit encoded data of the MJD is "0" and the MJD indicates "April 23, 2038" or later. However, if it does not indicate "April 23, 2038" or later, "0" may be set. Then, 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 new descriptor having the same meaning as the flag may be newly prepared and placed in the MH-TOT.

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

Therefore, in the broadcast receiving device 100 of the present embodiment, the "reference_time stamp" parameter, the "transmit_time stamp" parameter, the "mpu_presentation_time" parameter, and the like are referred to, and the above-mentioned first You may choose whether to use one calculation method or the second calculation method. That is, for example, when the most significant bit of the 64-bit length NTP length format time data is "0", the second calculation method is used, and when it is not "0", the first calculation method is used. And so on.

By any of the above methods, the broadcast receiving device 100 of the present embodiment can express the date after "April 23, 2038".

[Broadcast receiver channel selection process (initial scan)]
The AMT of the broadcasting system of this embodiment provides a list of multicast groups of IP packets for receiving IP packets transmitted by the TLV multiplexing method as indistinguishably as possible from IP packets transmitted on a communication line. It shall be. A plurality of IP multicast groups can be listed for one service identification. In addition, an address mask can be used to efficiently describe consecutive IP addresses.

In the broadcast receiving device 100 of this embodiment, a list of services acquired from TLV-NIT at the time of channel scanning at the time of initial setting or at the time of rescanning for setting change is displayed in a non-volatile memory such as ROM 103 or storage unit 110. It is possible to store the list of IP multicast groups corresponding to the respective services as IP-related information in the non-volatile memory in association with the respective services. To do. By storing the list of services and IP-related information in the non-volatile memory so that they can be referred to at all times, it is not necessary to reacquire TLV-NIT and AMT when switching channels, etc., and the acquisition of broadcast contents is efficient. It becomes 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 device 100 of this embodiment.

When the channel scan is started, the reception function execution unit 1102 instructs the tuner / demodulation unit 131 to set the frequency initial value and tune to the frequency value (S101). When the tuner / demodulation unit 131 succeeds in locking to the set frequency value (S102: Yes), the reception function execution unit 1102 then acquires the TLV-NIT from the received signal (S103).

When the TLV-NIT acquired in the process of S103 is valid data (S104: Yes), the reception function executing unit 1102 acquires information such as the TLV stream ID and the original network ID 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 obtained from the "tlv_stream_id" parameter, and the information of the original network ID can be obtained from the "original_newwork_id" parameter. Further, the distribution system information regarding the physical conditions of the broadcast transmission line corresponding to each TLV stream ID / original network ID is acquired from the distribution system descriptor (S106), and the 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 the TLV stream ID, the original network ID, the distribution system information, the list of service IDs, and the like, the processes of S105 to S107 are repeated. Next, the reception function execution unit 1102 creates a service list based on data such as the TLV stream ID, the original network ID, the distribution system information, and the list of service IDs acquired in the processes of S105 to S107, and creates the service list. The service list is stored in the ROM 103, the storage unit 110, or the like (updated at the time of rescanning) (S108).

Next, the reception function execution unit 1102 acquires the AMT from the received 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 processes of S109 to S110 are repeated. Next, the reception function execution unit 1102 stores the list of IP multicast groups acquired in the process of S110 as IP-related information in the ROM 103, the storage unit 110, or the like in association with the service ID (updated at the time of rescanning). (S111).

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

When the processing of S111 is completed, the reception function executing unit 1102 ends the processing if the frequency value set in the tuner / demodulation unit 131 is the final frequency value of the channel scan range (S112: Yes). 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 / demodulation unit 131 is increased (S113), and the processes of S102 to S111 are performed. repeat. If one TLV-NIT can acquire service IDs related to all services constituting the broadcasting network, and can further acquire an AMT having a list of IP multicast groups related to the service IDs, S112 to S113. No processing is required.

By the series of processes described above, the broadcast receiving device 100 of the present embodiment has a list of services (service list) constituting 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 the creation / update, the list of IP multicast groups (IP-related information) corresponding to each service can be created / updated, and further stored in a non-volatile memory such as the ROM 103 or the storage unit 110.

By referring to the "version_number" parameter of TLV-NIT or AMT, the rescan for changing the setting is automatically performed when it is detected that the information in the table has changed. You may. When a change in one of the "version_number" parameters of TLV-NIT and AMT is detected, only the information about the table in which the change in the parameter is detected may be automatically updated. However, when the above-mentioned automatic update is performed, it is desirable to notify the user that the rescan is automatically performed. Further, the user may be notified that the information in the table has changed, and the user may be allowed to select whether or not to perform the rescan.

[Broadcast receiver channel selection process (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 device 100 of this embodiment.

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

Next, the reception function execution unit 1102 starts acquiring the TLV-NIT from the reception signal of the tuner / demodulation unit 131. When the acquisition of the TLV-NIT is successful within a predetermined time (S205: Yes), the distribution system information for acquiring the IP data flow corresponding to the service ID is acquired from the acquired TLV-NIT (S207). On the other hand, when the acquisition of TLV-NIT is not successful within a predetermined time (S205: No), the service ID is supported by referring to the service list stored in the ROM 103 or the storage unit 110 (S206). Acquire the distribution system information for acquiring the IP data flow (S207). It should be noted that the determination process of S205 may not be performed, and the service list stored in the ROM 103, the storage unit 110, or the like may always be referred to. When the distribution system information is acquired in the process of S207, the reception function execution unit 1102 then controls the tuner / demodulation unit 131 with the frequency value indicated by the acquired distribution system information, and the service ID. The IP data flow corresponding to (S208) is received, the MMT data string is extracted from the received IP data flow, and is output to the separation unit 132.

In the separation unit 132, the transport processing unit 1102a acquires an MMTP packet having a packet ID of “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 possessed by the acquired MPT, and confirms whether or not the lower 16 bits of the “MMT_package_id_byte” parameter have the same value as the service ID. In an example of the MPT data structure shown in FIG. 17, when the lower 16 bits of the "MMT_packet_id_byte" parameter have the same value as the service ID (S211: Yes), the MMTP packet having the packet ID "0" is said. It is determined that the MMTP packet has the data of the program corresponding to the service ID, and the acquisition of the MFU is executed based on the information possessed by the acquired MPT (S216).

On the other hand, when the lower 16 bits of the "MMT_packet_id_byte" parameter are not the same value as the service ID (S211: No), the MMTP packet having the packet ID "0" has the program data corresponding to the service ID. Judge that it is not a packet. In this case, the transport processing unit 1102a acquires the PLT again (S212), and by confirming the acquired PLT, the packet ID of the MMTP packet that transmits the MPT having the “MMT_package_id_byte” parameter corresponding to the service ID. Confirm (let's say x) (S213). Further, the transport processing unit 1102a acquires an MMTP packet having a packet ID “x” from the input MMT data string (S214), and acquires an MPT included in the acquired MMTP packet (S215). Further, the MFU is acquired based on the acquired information of the MPT (S216).

It should be noted that the processing of S209 to S211 may not be performed, and the processing of S212 to S215 may always be performed. In this case, when the program data 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 processing of S216, the transport processing unit 1102a extracts the coded video data, the coded audio data, and the like from the acquired MFU and outputs them 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, but since each of the above processes is known, detailed description thereof will be omitted.

Through the above series of processes, the broadcast receiving device 100 of this embodiment can execute the channel selection (channel switching) operation. In particular, as described with reference to FIGS. 14 and 16, a 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 the storage unit. By storing it in a non-volatile memory such as 110 so that it can be referred to at all times, and referring to the service list and IP-related information stored in the non-volatile memory such as the ROM 103 or the storage unit 110 at the time of channel selection (channel switching), It makes it possible to improve the efficiency of operation during 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 with the case of reacquiring AMT or TLV-NIT at the time of channel selection (channel switching). Become.

[Screen layout control of broadcast receiver]
It is assumed that the broadcast receiving device 100 of this embodiment can control the screen layout based on the description of the LCT. FIG. 18 shows an example of the data structure of the LCT.

In the figure, in particular, the "left_top_pos_x" parameter and the "right_down_pos_x" parameter set the horizontal position at the upper left and the horizontal position at the lower right of the area when the left side of the full screen display is "0" / 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 are the vertical positions of the upper left and lower right of the area when the upper side of the full screen display is "0" and the lower side is "100". It shall be shown as a ratio to the total number of pixels. Further, the "layer_order" parameter shall indicate the relative position of the region in the depth direction.

An example of assigning a layout to a layout number 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 device 100 of this embodiment, and is an example of setting only one area on the entire screen. FIG. 19B is an example in which the entire screen is divided into three areas, and the respective areas are designated as “area 0”, “area 1”, and “area 2”. For example, when the number of pixels of the full screen is 7680 pixels horizontally / 4320 pixels vertically, the "region 0" has the "left_top_pos_x" parameter "0", the "left_top_pos_y" parameter "0", and the "right_down_pos_x" parameter "80". , "Right_down_pos_y" Since the parameter is "80", it is set in the range of (0,0)-(6143,3455). Similarly, "region 1" is set in the range of (6144,0)-(7679,4319), and "region 2" is set in the range of (0,3456)-(6143,4319).

FIG. 19C is an example of setting three regions as in FIG. 19B, but “region 0” is set in the range of (0,0) − (7679,4319), and “region 1” and “region 1” and “region” are set. 2 ”is arranged in front of the“ region 0 ”in the same range as described above, depending on the setting of the“ layer_order ”parameter. In FIG. 19D, "area 0" is set in device 0 (default device: broadcast receiving device 100 in this embodiment), and "area 1" is set in device 1 (mobile information terminal 700 in this embodiment). This is an example of the case where it is done.

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

It should be noted that the fractions after the decimal point generated when the screen is divided according to the set value of the parameter such as "left_top_pos_x" may be rounded up or rounded down. It may be rounded (or rounded to zero in binary). For example, the number of pixels of the full screen is 7680 pixels / vertical 4320 pixels, the "left_top_pos_x" parameter of "area 0" is "0", the "left_top_pos_y" parameter is "0", the "right_down_pos_x" parameter is "51", and "right_down_ When the parameter is "51", "area 0" may be set in the range of (0,0)-(3916,2203) by the rounding process, or (0,0)-(3915, 3915, by the truncation process. "Area 0" may be set in the range of 2202). Further, in consideration of the macro block at the time of the video compression processing, the round-up / round-down processing may be performed in units of 8 pixels, 16 pixels, or the like. By the processing, it becomes possible to efficiently perform the area setting based on the LCT and the resolution conversion processing of the multimedia content in the area.

[Exception handling for screen layout control of broadcast receiver]
In the broadcast receiving device 100 of this embodiment, even when the area control of the screen layout is performed by the above-mentioned LCT, when the user instructs to display the EPG screen, as an exception process, It is possible to perform screen layout control ignoring the description contents of the LCT. FIG. 20A shows an example of the exception handling operation of the screen layout control based on the LCT.

According to the description of the LCT, the same screen layout control as in FIG. 19B is performed, the broadcast program image is displayed in the "area 0", and the broadcast of the program cooperation data and the like linked to the broadcast program in the "area 1" and the "area 2". When the user instructs the display of the EPG screen by a remote control (not shown) while the content is displayed, the broadcast receiving device 100 of 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 screen layout control similar to that shown in FIG. 19A is performed), and the EPG screen is controlled to be displayed on the entire screen. Further, when the user instructs the end of the display of the EPG screen, the screen layout control according to the description contents of the LCT is re-executed.

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

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

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 sub screen portion at the lower right of the screen. Similarly, in the case of the two-screen display shown in FIG. 3B, the display area of the broadcast content is changed from the entire screen to only the split screen portion on the left side of the middle stage of the screen. In either case, the display area for displaying the broadcast content is narrower than when the entire screen is used, so that the area control of the screen layout is maintained within the display area (that is, the area division is performed). It is not preferable in terms of visual recognition to go and display a plurality of broadcast contents at the same time). Therefore, in the broadcast receiving device 100 of the present embodiment, in the above situation, only the broadcast content of the "area 0" is selected and displayed in the display area. Note that the broadcast contents of "area 1" and "area 2" may be selected and displayed according to the immediately preceding area selection status.

By performing the above-mentioned control, it is possible to improve the visibility of the broadcast content as compared with the case where various broadcast contents are displayed while maintaining the area control of the screen layout. The same applies when the sub-screen is displayed on the recorded program list screen or when the Internet content is displayed on the browser.

[EPG display of broadcast receiver]
In the broadcasting system of this embodiment, time-series information regarding events (so-called programs) included in each service constituting the broadcasting network is transmitted by MH-EIT. FIG. 21 shows an example of the data structure of MH-EIT of this embodiment. The MH-EIT is identified into two classes by the table ID (corresponding to the "talbe_id" parameter in the figure), and indicates the current / next event information of the own TLV stream and the schedule information of each event of the own TLV stream. Suppose it is possible. The broadcast receiving device 100 of this embodiment refers to the MH-EIT or the like and identifies by a service ID (corresponding to the “service_id” parameter in the figure) to provide information such as the start time and broadcast time of each event. It is possible to create an EPG screen by acquiring the above, and it is possible to superimpose the created EPG on video information or the like in the video synthesis unit 161 and display it on the monitor unit 162.

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

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

It should be noted that each control information (message, table, descriptor, etc.) in the broadcasting system of this embodiment indicates that the content, application, etc. related to the broadcasting program can be acquired from the network. However, if the LAN cable is not connected to the LAN communication unit 121 of the broadcast receiving device 100 and the access to each server device on the network is not possible, the mark 162a4 in which the above-mentioned "NetWork" is symbolized Etc. may be controlled so as not to be displayed.

Further, when the broadcast program is a distribution program distributed via the Internet 200 and cannot be acquired only from the broadcast wave, the broadcast receiving device 100 is a server device on the network as described above. In a state where access to is not possible, as shown in FIG. 22B, the portion of the detailed information 162b1 displayed on the EPG screen 162b may be controlled to be grayed out. That is, it is controlled so that the detailed information of the distributed program that cannot be viewed is not displayed. Further, by differentiating the background color of the detailed information 162b1 from others, it may be used as a substitute for the grayout process. When detailed information 162b1 is selected by operating a remote controller (not shown), the broadcast receiving device 100 is in a state where it cannot access each server device on the network, or the distribution program associated with the detailed information 162b1 is viewed. The user may be notified by a pop-up or the like that it cannot be performed.

By each of the above-mentioned controls, the broadcast receiving device 100 can provide the program information of each broadcast program to the user in a more comfortable format according to the network connection status.

FIG. 22C is a diagram showing another example of the EPG screen in the broadcast receiving device 100 of this embodiment. In the figure, "M1 TV", "M2 broadcast", "M3 channel", "M4TV", "TV M5", etc. are the broadcast station names of each channel, and in particular, the "M2 broadcast" station depends on the broadcast wave. It is assumed that the broadcast program to be distributed and the distribution program distributed via the Internet 200 (information 162c1 in the frame indicated by "net broadcasting" in the figure) are provided at the same time.

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 in the EPG screen 162c of the figure (A). Control to display the information of. On the other hand, when the broadcast receiving device 100 is in a state where it cannot access each server device on the network, as shown in the EPG screen 162d of the figure (B), it has only the distributed program to be distributed via the Internet 200. It may be controlled not to display the channel information of "M2 broadcasting (net broadcasting)" (information 162c1 in the figure (A)).

By each of the above-mentioned controls, the user of the broadcast receiving device 100 can eliminate the need to confirm the information of the channel that he / she cannot watch.

[Emergency warning broadcast display of broadcast receiver]
The broadcast receiving device 100 of this embodiment performs an emergency warning broadcast reception process when the emergency warning broadcast start 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 so.

The emergency warning broadcast may be provided as a full-screen display application, or may be provided as character information in a character supermarket. When the emergency warning broadcast is provided as character information in the character super, it is preferable to display the character information of the character super regardless of the state of the broadcast receiving device 100 immediately before receiving the emergency warning broadcast. That is, as shown in FIG. 23, when the user watches a normal broadcast program and receives the emergency warning broadcast while the program screen 162e of the broadcast program is displayed on the monitor unit 162, the emergency warning broadcast is performed. The character information 162e1 is superimposed and displayed on the program screen 162e. Similarly, when the user instructs the display of the EPG screen and receives the emergency warning broadcast while the EPG screen 162f is displayed on the monitor unit 162, the character information 162f1 by the emergency warning broadcast is superimposed on the EPG screen 162f. Is controlled to be displayed.

By the above-mentioned control, in the broadcast receiving device 100 of this embodiment, even when the user selects and displays the EPG screen, various setting screens, recorded program list screen, Internet browser, etc., the emergency warning broadcast is performed. Is received, it is possible to avoid overlooking important text information based on the emergency warning broadcast. Note that this control may be performed on the character information of a normal character supermarket that does not depend on the emergency warning broadcast.

[Various exception handling]
When the broadcast receiving device 100 of this embodiment cannot acquire the data outside the TLV stream in the same package, for example, the following exception handling may be performed.

As described with reference to FIG. 6E, in the broadcasting system supported by the broadcast receiving device 100 of the present embodiment, in the TLV stream based on the location information stored in the MPT (corresponding to “MMT_general_location_info ()” in FIG. 17). The data to be acquired and the data to be acquired by a route other than the TLV stream can be included in the same package. However, the data transmission path other than the TLV stream (for example, IPv4 data flow, IPv6 data flow, MPEG2-TS of broadcasting, etc.) indicated by the location information is a reception function different from the reception function of the TLV / MMT stream. Therefore, even when the broadcast receiving device 100 is operating, the receiving function of these transmission paths is not operating, or the receiving function itself is operating but the relay device or the like is not operating. There may be situations where data cannot be acquired from these transmission paths, such as situations where the transmission paths of the above are not connected by wire or wirelessly, or where the broadcast receiver 100 is installed in an environment where these transmission paths cannot be connected in the first place. ..

Under such circumstances, an event indicating that the location information stored in the MPT associates the data acquired in the TLV stream with the data acquired by a route other than the TLV stream so as to be included in the same package. When received, the broadcast receiving device 100 of this embodiment may perform the following operations, for example.

For example, as shown in FIGS. 19B and 19C, the LCT sets a plurality of areas in the screen, displays the image included in the TLV stream in "area 0", and displays "area 1" and "area 2". ] Is associated so that the data acquired by the transmission path other than the TLV stream is displayed, and the data of the transmission path other than the TLV stream to be displayed in “Area 1” and “Area 2” is displayed. If it cannot be acquired, the layout display of a plurality of areas specified 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 left displayed in the "area 0" of the default layout display shown in FIG. 19A, as shown in FIGS. 19B and 19C. It is sufficient not to shift to the layout display of multiple areas. Further, in this state, even if a change instruction from the default layout to the layout shown by the LCT is input to the operation input unit 170 shown in FIG. 7A, the default layout display shown in FIG. 19A can be left as it is, or other data broadcasting screens. It may be possible not to shift to the layout display of a plurality of areas as shown in FIGS. 19B and 19C by switching to.

As shown in FIGS. 19B and 19C, the LCT sets a plurality of areas in the screen, displays the image included in the TLV stream in "area 0", and displays the images included in the TLV stream in "area 1" and "area 2". When the data acquired in the transmission path other than the TLV stream is associated so as to be displayed, the data of the transmission path other than the TLV stream to be displayed in "Area 1" or "Area 2" cannot be acquired. As another operation example of the case, the display frames of a plurality of areas of FIGS. 19B and 19C shown by the LCT are once displayed, and the background color and a predetermined still image are displayed for the "area 1" and the "area 2". If the data of the transmission path other than the TLV stream indicated by the location information of the MPT cannot be acquired even after the lapse of a predetermined time, the display may be switched to return to the default layout display state shown in FIG. 19A. In this case, if the program video included in the TLV stream is continuously displayed in the "area 0" even when the layouts of FIGS. 19A, 19B, and 19C are changed, the user's program video itself Is preferable because it continues.

Further, since the data of the transmission path other than the TLV stream to be displayed in "Area 1" and "Area 2" cannot be acquired, the content received in the TLV stream in "Area 0" of the default layout display shown in FIG. 19A. When the video of the above is displayed, the various communication functions and various reception functions of the broadcast receiving device 100 of this embodiment start to operate, and the communication environment, communication status, and various reception functions of the various communication functions are displayed. Due to changes in the reception environment and reception status, it is possible that data on a transmission path other than the TLV stream to be displayed in "Region 1" or "Region 2" can be acquired. In this case, the broadcast receiving device 100 of the present embodiment immediately switches from the default layout display shown in FIG. 19A to the layout of a plurality of areas as shown in FIGS. 19B and 19C shown by the LCT, and sets the TLV to "area 0". The video of the content received in the stream may be displayed, and the data acquired from a transmission path other than the TLV stream may be displayed in the "region 1" or the "region 2". Further, the layout change may be executed after the change instruction from the default layout to the layout indicated by the LCT is input from the operation input unit 170 without immediately changing the layout.

[Copyright protection function]
In the digital broadcasting system supported by the broadcast receiving device 100 of the present embodiment, by transmitting the MPT including the copy control information, for example, "unlimited copy possible"("unlimited copy possible and storage" by the copy control information. It may be divided into two types: "encryption processing required at the time of output" and "unlimited copy possible and no encryption processing required at the time of storage and output"), "only one generation can be copied", "predetermined multiple times can be copied" ( For example, if 9 times copy is possible + 1 move is possible, so-called "dubbing 10"), "copy prohibition", or the like, the copy control state of the content referred to by the MPT may be indicated and transmitted. In this case, the broadcast receiving device 100 of the present embodiment stores the content in the storage (storage) unit 110, records it on a removable recording medium, outputs it to an external device, and transfers it to the external device according to the copy control information. It may be configured to control copying, moving processing to an external device, and the like. The target of the storage process may include not only the storage (storage) unit 110 inside the broadcast receiving device 100 but also a record subjected to protection processing such as encryption processing so that the data can be reproduced only by the broadcast receiving device 100. .. Specifically, the target of the storage process includes an external recording device or the like that can be recorded and reproduced only by the broadcast receiving device 100.

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

First, when the copy control information included in the MPT indicates "unlimited copying is possible", the broadcast receiving device 100 of this embodiment stores in the storage (storage) unit 110, records in a removable recording medium, and is an external device. Output to, copy to an external device, and move processing to an external device may be performed without restrictions. However, if "unlimited copy possible and encryption processing required for storage and output" and "unlimited copy possible and encryption processing not required for storage and output" are separated, "unlimited copy possible and storage and output" When "sometimes encryption processing is required", the number of times of storage in the storage (storage) unit 110, recording on a removable recording medium, output to an external device, copying to an external device, and move processing to an external device is limited. However, it is necessary to perform encryption processing in each case.

Further, when the copy control information included in the MPT indicates "copying is possible only for one generation", the broadcast receiving device 100 of this embodiment enables encrypted storage in the storage (storage) unit 110. When the stored content is output to an external device for viewing, it is encrypted and output together with the copy control information of "copy prohibited". However, so-called move processing to an external device (a process of copying the content to the external device and making the content in the storage (storage) unit 110 of the broadcast receiving device 100 unplayable by an erasing process or the like) is possible.

Further, when the copy control information included in the MPT indicates "copying is possible a predetermined number of times", the broadcast receiving device 100 of this embodiment can be encrypted and stored in the storage (storage) unit 110. When the stored content is output to an external device for viewing, it is encrypted and output together with the copy control information of "copy prohibited". However, it may be possible to copy and move a predetermined number of copies to an external device. In the case of the so-called "dubbing 10" regulation, 9 copies and 1 move process may be performed on an external device.

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

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

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

Further, the copy control information is a copy process of the content indicating copy restrictions such as "only one generation can be copied", "predetermined multiple times can be copied", and "copy prohibited" to an external device via the LAN communication unit 121. Is possible only when the IP address of the external device that is the destination of the transmission packet from the broadcast receiving device 100 is in the same subnet as the IP address of the broadcasting receiving device 100, and the IP address of the external device is the broadcasting receiving device. If it is outside the same subnet as the IP address of 100, it may be prohibited. The content whose copy control information is "unlimited copying is possible and encryption processing is required at the time of storage and output" may be handled in the same manner.

Similarly, once the copy control information indicates copy restrictions such as "only one generation can be copied", "predetermined multiple times can be copied", "unlimited copy is possible and encryption processing is required at the time of storage and output". Regarding the process of moving to an external device via the LAN communication unit 121 after storing in the storage (storage) unit 110, the IP address of the external device that is the destination of the transmission packet from the broadcast receiving device 100 is the broadcast receiving device 100. It is possible only when it is in the same subnet as the IP address of the broadcast receiving device 100, and it may be prohibited when the IP address of the external device is outside the same subnet as the IP address of the broadcast receiving device 100.

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

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

Next, as described with reference to FIG. 6E, in the digital broadcasting system supported by the broadcast receiving device 100 of the present embodiment, the location information in the MPT (“MMT_general_location_IPv ()” in FIG. 17) is used in the TLV stream of the broadcasting path. Data acquired by a route different from the acquired data (IPv4, IPv6, MPEG2-TS, URL, etc.) may be included in the same package and event as the data acquired in the TLV stream, but at this time, it is copied to MPT. Content protection when control information is included will be described.

First, when copy control information is included in the MPT, the data included in the same package and the same event in the location information is a route (IPv4, IPv6, MPEG2-TS, URL, etc.) different from the data acquired in the TLV stream of the broadcast route. ) May be used to control the data according to the copy control information included in the TLV stream. As described above, the copy control state of the content specified by these copy control information includes "unlimited copy possible" ("unlimited copy possible and encryption processing required at storage and output" and "unlimited copy possible". And it may be divided into two types, "encryption processing is not required at the time of storage and output"), "only one generation can be copied", "predetermined multiple times can be copied" (for example, if 9 times copy is possible + 1 move is possible, so-called " Dubbing 10 ”),“ copy prohibited ”, etc. can be specified.

Here, when the position of the data indicated by the location information includes the MPEG2-TS data transmitted by another digital broadcast signal, the MPEG2-TS data is associated with the copy control information even in the other digital broadcast signal. It is being broadcast. Then, how to perform copy control of the MPEG2-TS data according to what information (whether to follow 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 broadcasting system of this embodiment, as a solution to this problem, the broadcast receiving device 100 may perform any of the following plurality of solutions.

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

For example, the copy control state indicated by the copy control information included in the TLV stream is "1st generation copy possible", and the copy control state indicated by the copy control information included in MPEG2-TS is "predetermined multiple times copy possible". If there is, copy control may be performed as the content of "1st generation copy possible" even if the data is acquired by a route different from the data acquired by the TLV stream (digital broadcasting of MPEG2-TS transmission format). For example, the copy control state indicated by the copy control information included in the TLV stream is "unlimited copy possible", and the copy control state indicated by the copy control information included in MPEG2-TS is "predetermined multiple times copy possible". If there is, copy control may be performed as "unlimited copy possible" content even if the data is acquired by a route different from the data acquired by the TLV stream (digital broadcasting in MPEG2-TS transmission format).

In the case of this operation, the data acquired by a route other than the TLV stream can also be put into the copy state to be managed in the broadcasting system supported by the broadcasting receiving device 100 of this embodiment.

<Operation example 2>
In the second operation example, when the MPT contains copy control information and the location information includes MPEG2-TS data transmitted by another digital broadcast signal in the same package and the same event, the TLV stream. The copy control state indicated by the copy control information included in MPEG2-TS is compared with the copy control state indicated by the copy control information included in MPEG2-TS, and the copy control state indicated by the copy control information included in MPEG2-TS is selected. Is stricter than the copy control state indicated by the copy control information included in the TLV stream, the storage process is performed in the storage (storage) unit 110 or the like, the recording process is performed in the removable recording medium, or the output processing is performed from the digital interface. At that time, it operates so as to exclude the MPEG2-TS data from the processing target content.

In the case of this operation, the data acquired by a route other than the TLV stream is copied on the broadcast receiving device 100 of this embodiment while respecting the original copy control information set in the broadcasting system that transmits the data. It is possible to eliminate duplication of control states.

Further, 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. May perform copy control on the MPEG2-TS data included in the same package and the same event in the location information as the content in the copy control state indicated by the copy control information included in the TLV stream.

In the case of this operation, the data acquired by a route other than the TLV stream is copied on the broadcast receiving device 100 of this embodiment while respecting the original copy control information set in the broadcasting system that transmits the data. It is possible to eliminate duplication of control states.

In the above description, the copyright protection function of the broadcast receiving device 100 of this embodiment has been described as being performed based on the copy control information included in the MPT. However, the table in which the copy control information is arranged is not limited to the MPT. In addition to the MPT, the MH-service description table (MH-SDT) and the MH-event information table (MH-EIT) described in FIG. 6B, or other tables are arranged for transmission, and the broadcast receiving device 100 follows these. Copyright protection processing may be performed.

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

(Example 2)
Hereinafter, Example 2 of the present invention will be described. The configuration, treatment, effect, etc. in this embodiment shall be the same as in Example 1 unless otherwise specified. Therefore, in the following, the differences between the present embodiment and the first embodiment will be mainly described, and the common points will be omitted as much as possible in order to avoid duplication. Further, the broadcast receiving device of this embodiment will be described below assuming that it is a television receiver that supports both the MMT system and the MPEG2-TS system as the media transport system.

[Hardware configuration of broadcast receiver]
FIG. 24 is a block diagram showing an example of the internal configuration of the broadcast receiving device 800. The broadcast receiving device 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, and a second tuner /. Demodulation unit 832, MMT decoding processing unit 841, MPEG2-TS decoding 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 Consists of ,.

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, Etc. are the main control unit 101, system bus 102, ROM 103, RAM 104, storage (storage) unit 110, expansion interface unit 124, digital interface unit 125, monitor unit 162, video output unit 163 in the broadcast receiving device 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, and detailed description thereof will be omitted.

The first tuner / demodulation unit 831 receives the broadcast wave of the broadcast service that employs MMT as the media transport method via an antenna (not shown), and the service desired by the user is controlled by the main control unit 801. Synchronize (select) to the channel of. Further, the first tuner / demodulation unit 831 demodulates the received broadcast signal, acquires an MMT data string, and outputs it to the MMT decoding processing unit 841. The second tuner / demodulation unit 832 receives the broadcast wave of the broadcasting service adopting MPEG2-TS as the media transport method via an antenna (not shown), and the user desires based on the control of the main control unit 801. Synchronize (select) the channel of the service to be performed. Further, the second tuner / demodulation unit 832 demodulates the received broadcast signal, acquires the MPEG2-TS data string, and outputs the MPEG2-TS decoding processing unit 842.

The MMT decoding processing unit 841 inputs the MMT data string output from the first tuner / demodulation unit 831, and based on the control signal included in the MMT data string, the video data string and the audio data string, which are real-time presentation elements, Separation processing of character super data string, subtitle data string, etc., decoding processing, etc. are performed. The MMT decoding processing unit 841 includes a separation unit 132, a video decoder 141, a video color gamut conversion unit 142, an audio decoder 143, a character super decoder 144, a subtitle decoder 145, and a subtitle synthesis unit 146 in the broadcast receiving device 100 of the first embodiment. It is provided with functions corresponding to the subtitle color gamut conversion unit 147, the data decoder 151, the cache unit 152, the application control unit 153, the browser unit 154, the application color gamut conversion unit 155, the sound source unit 156, and the like. The MMT decoding processing unit 841 can perform various processes described in the first embodiment. Since the details of the various processes are as described in the first embodiment, the description thereof will be omitted.

The MPEG2-TS decoding processing unit 842 inputs the MPEG2-TS data string output from the second tuner / demodulation unit 832, and the video data which is a real-time presentation element based on the control signal included in the MPEG2-TS data string. Separation processing of columns, audio data strings, character super data strings, subtitle data strings, etc., decoding processing, etc. are performed. The MPEG2-TS decoding processing unit 842 has a function equivalent to that of the IRD (Integrated Receiver Decorder) unit of a conventional television receiver that receives broadcast waves of a broadcasting service that employs MPEG2-TS as a media transport method. Detailed description will be omitted.

The video synthesis 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. Perform processing such as selection and / or superimposition as appropriate. The video synthesis unit 861 includes a video RAM (not shown), and the monitor unit 862 and the like are driven based on the video information and the like input to the video RAM. Further, the video composition unit 861 performs scaling processing, superimposition processing of EPG screen information, and the like, if necessary, 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 appropriately selects and / or performs processing such as mixing.

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 and other communication devices on the Internet 200. Further, the MMT data string (or a part thereof) or the MPEG2-TS data string (or a part thereof) of the program transmitted via the communication line is acquired, and the MMT decoding processing unit 841 or the MPEG2-TS is appropriately obtained. Output to the decoding processing unit 842.

[Time display of broadcast receiver]
In the broadcast receiving device 800 of this embodiment, it is assumed that the current date and the current time can be displayed on the EPG screen, various setting screens, and the like. The information regarding the current date and the current time is transmitted by MH-TOT or the like in a broadcasting service that adopts MMT as a media transport method, and MPEG- in a broadcasting service that adopts MPEG2-TS as a media transport method. 2 It is transmitted by TOT (Time Offset Table) or the like provided in SI (Service Information) specified in the system. The broadcast receiving device 800 can acquire information on the current date and the current time by referring to the MH-TOT and the TOT.

Further, in general, when the video synthesis unit 861 mainly selects the video information or the like output from the MMT decoding processing unit 841, the information regarding the current date and the current time acquired from the MH-TOT is used. When the video synthesis unit 861 mainly selects the video information or the like output from the MPEG2-TS decoding processing unit 842 by superimposing it on the video information or the like, the information on the current date and the current time acquired from the TOT is described above. It may be controlled so as to be superimposed on the video information or the like.

However, since there are differences in coding / decoding processing, transmission path, etc. between the broadcasting service that uses MMT as the media transport method and the broadcasting service that uses MPEG2-TS as the media transport method, the current time is displayed in particular. In the above, there is a possibility that inconsistency may occur between the selection of the broadcasting service adopting MMT as the media transport method and the selection of the broadcasting service adopting MPEG2-TS as the media transport method. For example, as shown in FIG. 25, the EPG screen 162g for displaying the channel information of the broadcasting service adopting MMT as the media transport method displays the channel information of the broadcasting service adopting MPEG2-TS as the media transport method. When the screen display is switched to the screen 162h, the display of the current time is switched from the current time display 162g1 to the current time display 162h1, which causes inconsistency, which may cause the user to feel a visual discomfort.

In the broadcast receiving device 800 of the present embodiment, even when the video compositing unit 861 mainly selects the video information or the like output from the MMT decoding processing unit 841 in order to prevent the user from feeling a visual discomfort. , Information on the current date and the current time acquired from the TOT is controlled to be superimposed on the video information and the like. That is, the content of the broadcasting service adopting MMT as the media transport method is controlled so as to superimpose the current time information provided by the broadcasting service adopting MPEG2-TS as the media transport method.

By performing the above control, the broadcast receiving device 800 of the present embodiment always displays the current time information acquired by referring to the TOT when displaying the current time. Therefore, even when switching between a broadcasting service that uses MMT as the media transport method and a broadcasting service that uses MPEG2-TS as the media transport method, the user feels a visual discomfort due to the inconsistency in the display of the current time. It is possible to prevent it from being caused.

Note that 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 device 800 of this embodiment. In the broadcast receiving device 800 of this embodiment, when the broadcasting service adopting MPEG2-TS as the media transport method can be received, the current time information is always acquired by referring to the TOT. , The MH-TOT only when the broadcasting service adopting MPEG2-TS as the media transport method cannot be received and the broadcasting service adopting MMT as the media transport method can be received. Control to acquire the current time information by referring to.

Further, contrary to the above-mentioned control, the current time information provided by the broadcasting service adopting MMT as the media transport method is superimposed on the content of the broadcasting service adopting MPEG2-TS as the media transport method. Even if it is controlled, the same effect as described above can be obtained.

As described above, when controlling so as to superimpose the current time information provided by the broadcasting service adopting MPEG2-TS as the media transport method on the contents of the broadcasting service adopting MMT as the media transport method. In any case, when the content of the broadcasting service that adopts MPEG2-TS as the media transport method is controlled so as to superimpose the current time information provided by the broadcasting service that adopts MMT as the media transport method. Also in the above, 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 device] in the first embodiment. It is possible.

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

However, the broadcast receiving device 800 of this embodiment is also displaying video information or the like provided by a broadcasting service that employs MMT as the media transport method, or MPEG2-TS as the media transport method. Even when displaying video information or the like provided by the broadcasting service that employs the above, both the MH-EIT and the EIT can be acquired, and the usability for the user is improved.

FIG. 27A shows an example of the EPG screen in the broadcast receiving device 800 of this embodiment. In the figure, the EPG screen 162i is an EPG screen created based on MH-EIT, a broadcasting service that adopts MMT as a media transport method, and is "M1 TV", "M2 broadcasting", "M3 channel", "M4TV". , "Television M5", etc. are the names of broadcasting stations of broadcasting services that have adopted MMT as the media transport method, respectively. The EPG screen 162j is an EPG screen created based on the EIT of a broadcasting service that adopts MPEG2-TS as a media transport method, and is "T6 TV", "T7 broadcasting", "T8 channel", "T9TV". , "TV TA" and the like are the names of broadcasting stations of broadcasting services that adopt MPEG2-TS as the media transport method, respectively.

For example, when a user is instructing to display an EPG screen by operating a remote controller (not shown) while watching a broadcast program provided by a broadcasting service that employs MMT as a media transport method, the initial screen of the EPG screen (shown). Omitted) is displayed. The initial screen of the EPG screen is an EPG screen created based on MH-EIT, a broadcasting service that adopts MMT as a media transport method, and is "17:00 to" of "October 7, 2014 (today)". (Near the current time) ”is displayed with detailed information on the broadcast programs of each channel. Next, the user wants to check the detailed information of the broadcast program of each channel of "20: 00-" of "October 9, 2014", and instructs to update the EPG screen by operating the remote controller (not shown). Then, the EPG screen 162i is displayed.

Furthermore, when the user wants to confirm the detailed information of the broadcast program provided by the broadcast service adopting MPEG2-TS as the media transport method and instructs to switch the network by operating the remote controller (not shown), the EPG The screen 162j is displayed. At this time, in the broadcast receiving device 800 of the present embodiment, the initial screen of the EPG screen created based on the EIT of the broadcasting service adopting MPEG2-TS as the media transport method (that is, "October 7, 2014" (Detailed information on the broadcast program of each channel of "17:00 ~"), but the same time zone as the EPG screen 162i displayed immediately before (that is, "20:00 ~" of "October 9, 2014" 』) Control to display detailed information of the broadcast program of each channel.

With the above-mentioned control, the user can continuously confirm detailed information about broadcast programs of the same day and the same time zone of a plurality of networks having different media transport methods by a simple operation. That is, the usability of the broadcast receiving device 800 is improved.

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

Therefore, it is created based on the EIT of the broadcasting service that adopts MPEG2-TS as the media transport method while the user is checking the channel information created based on the MH-EIT of the broadcasting service that adopts MMT as the media transport method. Even when it is desired to confirm the channel information, it is possible to eliminate the need for instructions for switching the network by operating the remote controller (not shown). Further, the user can simultaneously confirm detailed information about broadcast programs of the same day and the same time zone of a plurality of networks having different media transport methods. That is, the usability of the broadcast receiving device 800 is improved.

(Example 3)
Hereinafter, Example 3 of the present invention will be described. Unless otherwise specified, the configuration and effects of this example shall be the same as those of Example 1. Therefore, in the following, the differences between the present embodiment and the first embodiment will be mainly described, and 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 broadcasting communication system including the broadcasting receiving device of this embodiment. The broadcasting communication system of this embodiment includes a broadcasting receiving device 40100 and an antenna 40100a, a connection cable 40200, a monitoring device 40300, a broadband network such as the Internet 200 and a router device 200r, a broadcasting station radio tower 300t and a broadcasting satellite (or communication satellite). It is composed of 300s, a broadcasting station server 300, a service provider server 400, and other application servers 500. Although not shown, the access point 200a, the mobile telephone communication server 600, and the base station 600b of the mobile telephone communication network are connected in the same manner as the system configuration diagram (see FIG. 1) of the broadcasting communication system of the first embodiment. , The mobile information terminal 700, may be further provided. Further, in that case, the mobile information terminal 700 may be able to directly communicate with the broadcast receiving device 40100 without going through the router device 200r or the like.

The broadcast receiving device 40100 receives the broadcast wave transmitted from the radio tower 300t via the broadcasting satellite (or communication satellite) 300s and the antenna 40100a. Alternatively, the broadcast wave transmitted from the radio tower 300t may be directly received from the antenna 40100a without going through the broadcasting satellite (or communication satellite) 300s. Further, the broadcast receiving device 40100 can be connected to the Internet 200 via the router device 200r, and can transmit and receive data by communicating with each server device and other communication devices on the Internet 200.

The connection cable 40200 is a communication cable that connects the broadcast receiving device 40100 and the monitoring device 40300, and the encoded video / audio data or the like output from the broadcast receiving device 40100 is transmitted. The monitor device 40300 transmits video information and audio information obtained by performing predetermined signal processing on encoded video / audio data and the like received via the connection cable 40200 via a display device such as a liquid crystal panel and a speaker. This is a video display device provided to the user.

[Hardware configuration of broadcast receiver]
FIG. 29A is a block diagram showing an example of the internal configuration of the broadcast receiving device 40100. The broadcast receiving device 40100 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 40125, a tuner / demodulator unit 131, and a separation unit 132. , Video decoder 141, video color gamut conversion unit 142, audio decoder 143, character super decoder 144, subtitle decoder 145, subtitle synthesis unit 146, subtitle color gamut conversion unit 147, data decoder 151, cache unit 152, application control unit 153, It is composed of a browser unit 154, an application color gamut conversion unit 155, a sound source unit 156, a video synthesis unit 161, a video output unit 163, a voice synthesis unit 164, an audio output unit 166, and an operation input unit 170.

The broadcast receiving device 40100 of this embodiment is assumed to be 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, the monitor unit 162 and the speaker 165 may be omitted as compared with the broadcast receiving device 100 of the first embodiment.

The digital interface unit 40125 is an interface for outputting or inputting encoded digital video data and / or digital audio data. The digital interface unit 40125 can output the MMT data string obtained by demodulation by the tuner / demodulation unit 131, the MMT data string acquired via the LAN communication unit 121, or the mixed data of each MMT data string as it is. It shall be. Further, the MMT data string input from the digital interface unit 40125 may be controlled to be input to the separation unit 132. The output of the digital content stored in the storage (storage) unit 110 or the storage of the digital content in the storage (storage) unit 110 may be performed via the digital interface unit 40125. Further, the digital interface unit 40125 is a DVI terminal, an HDMI (registered trademark) terminal, a DisplayPort (registered trademark) terminal, or the like, and is in a format compliant with the DVI specification, the HDMI specification, the DisplayPort specification, or the like, and is a video synthesis unit 161. And may be controlled to output the video data, the audio data, and the like output from the audio synthesizer 164.

[Software configuration of broadcast receiver]
FIG. 29B is a software configuration diagram of the broadcast receiving device 40100 of this embodiment, and shows the software configuration of the ROM 103, the RAM 104, and the storage (storage) unit 110. Compared with the software configuration diagram (see FIG. 7D) in the broadcast receiving device 100 of the first embodiment, it is assumed that the receiving function executing unit 1102 expanded in the RAM 104 further includes the output control unit 41102i. The output control unit 41102i of the reception function execution unit 1102 controls each process related to data output from the video output unit 163, the audio output unit 166, and the digital interface unit 40125.

[Interface configuration of broadcast receiver and monitor device]
FIG. 30 is a system configuration diagram showing an example of an interface configuration between the broadcast receiving device 40100 and the monitoring device 40300. In this embodiment, the connection terminal of the digital interface section 40125 on the broadcast receiving device 40100 side and the connection terminal of the digital interface section omitted on the monitoring device 40300 side are connected by the connection cable 40200. explain.

As shown in the figure, the connection cable 40200 is standardized by n pairs of differential transmission lanes of CH1 to CHn (may be referred to as differential transmission lines; the same applies hereinafter) and VESA (Video Electronics Standards Association). It shall be composed of a DDC (Display Data Channel) line, an HPD (Hot Plug Transmit) line, a CEC (Consumer Electricals Control) line, and the like. The n pairs of differential transmission lanes include one pair of clock lanes (may be referred to as clock lines; the same shall apply hereinafter) and (n-1) pairs of data lanes (may be referred to as data lines; the same shall apply hereinafter). ) May be. For example, if n = 4, there will be one pair of clock lanes and three pairs of data lanes. One pair of clock lanes and one pair of data lanes (that is, n = 2) may be used. When n = 2 as described above, the differential transmission lane portion is serial transmission. All pairs may be used as data lanes for transmitting data on which clocks are superimposed. Further, although not shown, a power supply line, a GND line, and a spare line may be further included. The CEC line and the like may be omitted.

Digital video (R / G / B / Vsync / Hsync) / from the video synthesis unit 161 and the audio synthesis unit 164 to the data lane via the transmission processing unit 40125b of the digital interface unit 40125 on the broadcast receiving device 40100 side. An audio signal, other control signal, or the like may be output in a predetermined format. The digital video / audio signal and other control signals are received by the reception processing unit 40325b of the digital interface unit on the monitor device 40300 side, and the image processing unit and the audio processing unit (not shown) perform image quality adjustment, volume adjustment, etc. The necessary processing is appropriately performed, and the output is output from the display unit and the speaker of the monitor device 40300.

Further, the transmission processing unit 40125b of the digital interface unit 40125 on the broadcast receiving device 40100 side communicates with the receiving processing unit 40325b of the digital interface unit on the monitoring device 40300 side via the DDC line, and further, EDID from the EDID storage unit 40325c It is assumed that it is possible to read the data of (Extended Display Interface Data). That is, the broadcast receiving device 40100 can grasp the display performance of the monitor device 40300 by acquiring the EDID.

In this embodiment, the display performance is an item such as an input resolution and a frame rate that can be supported by the monitor device 40300, a video standard, and whether or not the monitor device 40300 can support 3D video display. Further, in the following description of this embodiment, EDID will be described as an example of information used by the broadcast receiving device 40100 to grasp the display performance of the monitor device 40300. However, the information does not necessarily have to be EDID. Information other than EDID, which is performance identification information for identifying the display performance and function of the monitor device 40300, may be used. Further, the display performance of the monitor device 40300 may be grasped by a method other than reading the performance identification information.

Further, the transmission control unit 40125a of the digital interface unit 40125 on the broadcast reception device 40100 side controls the transmission processing unit 40125b and communicates with the reception control unit 40325a of the digital interface unit 40325a on the monitor device 40300 side via the HPD line. By doing so, it is possible to detect that the monitor device 40300 is connected, that the power of the monitor device 40300 is turned on, and the like. It should be noted that the reception control unit 40325a of the digital interface unit on the monitor device 40300 side also controls the reception processing unit 40325b.

The configuration of the connection cable 40200, the internal configuration of the digital interface unit 40125 of the broadcast receiving device 40100, and the internal configuration of the digital interface unit of the monitoring device 40300 shown in FIG. 30 are merely examples, and may have different configurations. ..

[Data output control of broadcast receiver]
The broadcast receiving device 40100 of this embodiment has a function of performing output control according to the display performance of the monitor device acquired from the monitor device connected by the connection cable. Hereinafter, an example of output control of the broadcast receiving device 40100 according to the display performance of the monitor device will be described.

(A) Output control according to the frame rate compatible performance of the monitor device The following is a connection cable (this embodiment) when the broadcast receiving device 40100 of this embodiment receives a broadcasting service that employs MMT as the media transport method. In the present invention, an example of data output control according to the frame rate corresponding performance of the monitor device (monitor device 40300 in this embodiment) connected via the connection cable 40200) is shown.

First, the data structure of the broadcast service received by the broadcast receiving device 40100 of this embodiment will be described. For example, the original frame rate of the broadcast program provided by the broadcast service is 240 Hz, and when the package is generated at the broadcasting station, as shown in FIG. 31A, the video is captured by the video frames F00, F04, F08, and. It is assumed that the asset A is generated, the video asset B is generated by the video frames F02, F06, F10, and, and the video asset C is generated by the video frames F01, F03, F05, F07, F09, and. Further, the I frame and the P frame in the compression coding process shall be included in the video asset A, and the video asset B and the video asset C shall mainly include the B frame in the compression coding process. However, a part of the B frame may be included in the video asset A, or a part of the P frame may be included in the video asset B.

By generating the package as described above, in the data structure of the broadcast service, it is possible to reproduce the video information of the broadcast program at a frame rate of 60 Hz using only the coded data included in the video asset A. Suppose there is. Further, it is assumed that the video information of the broadcast program can be reproduced at a frame rate of 120 Hz from the coded data of the video asset A and the video asset B. Further, by using all the encoded data of the video asset A, the video asset B, and the video asset C, it is possible to reproduce the video information of the broadcast program at the original frame rate of 240 Hz. To do.

As shown in FIG. 31B, it is assumed that the video asset A is transmitted to the broadcast receiving device 40100 in the IP data flow included in the TLV stream via the broadcast transmission line. Further, it is assumed that the video asset B and the video asset C are delivered to the broadcast receiving device 40100 by an IP data flow via a communication line. As described with reference to FIG. 6E, the video asset B and the video asset C are associated with the video asset A by the package ID, the asset ID, etc. included in the MPT of the MMT-SI, and are on the network by the location information, etc. It is possible to obtain from.

Using FIG. 32, according to the frame rate correspondence performance of the monitor device connected via the connection cable, which is performed when the broadcast receiving device 40100 of the present embodiment receives the broadcasting service adopting MMT as the media transport method. An example of the operation of the data output control will be described.

The output control unit 41102i of the broadcast receiving device 40100 of this embodiment first passes through the DDC line of the connection cable 40200, the transmission processing unit 40125b of the digital interface unit 40125, and the transmission control unit 40125a, and the EDID storage unit 40325c of the monitoring device 40300. Read the EDID data stored in.

<A-1> Data output control 1
When it is found by the EDID data reading process that the monitor device 40300 supports the display of video information at frame rates of 60 Hz, 120 Hz, and 240 Hz, the broadcast receiving device 40100 controls the transport processing unit 1102a. First, the video asset A, the audio asset A, the data asset A, the video asset B, and the video asset C that constitute the package of the broadcast program are acquired based on the above. Further, the video decoder 141 decodes the encoded data of the video asset A, the video asset B, and the video asset C to reproduce the video data having a frame rate of 240 Hz. Further, the audio decoder 143 performs the decoding process of the audio asset A, and the data decoder 151 performs the decoding process of the data asset A.

Next, the video synthesizing unit 161 appropriately selects and / or superimposes the video data having a frame rate of 240 Hz output from the video color gamut conversion unit 142 and the additional data output from the data decoder 151. Next, based on the control of the output control unit 41102i, the video data with a frame rate of 240 Hz output from the video synthesis unit 161 and the audio data output from the audio synthesis unit 164 are processed in a predetermined format by the digital interface unit 40125. Is transmitted to the monitoring device 40300 via the connection cable 40200.

The monitoring device 40300 receives the video data, audio data, and the like having a frame rate of 240 Hz transmitted from the broadcast receiving device 40100 in the predetermined format by a digital interface unit (not shown). Further, the monitor device 40300 displays the video information, audio information, etc. at a frame rate of 240 Hz obtained by performing predetermined signal processing on the received video data, audio data, etc. at a frame rate of 240 Hz, and a display device such as a liquid crystal panel. Provided to the user via a speaker.

<A-2> Data output control 2
When it is found by the EDID data reading process that the monitor device 40300 only supports the display of video information at frame rates of 60 Hz and 120 Hz, the broadcast receiving device 40100 controls the transport processing unit 1102a. Based on this, first, the video asset A, the audio asset A, the data asset A, and the video asset B that constitute the package of the broadcast program are acquired. Video asset C is not acquired. Further, the video decoder 141 decodes the encoded data of the video asset A and the video asset B to reproduce the video data having a frame rate of 120 Hz.

Further, the audio decoder 143 performs the decoding process of the audio asset A, and the data decoder 151 performs the decoding process of the data asset A. Next, the video synthesizing unit 161 appropriately selects and / or superimposes the video data having a frame rate of 120 Hz output from the video color gamut conversion unit 142 and the additional data output from the data decoder 151. Next, based on the control of the output control unit 41102i, the video data having a frame rate of 120 Hz output from the video synthesis unit 161 and the audio data output from the audio synthesis unit 164 are processed in a predetermined format by the digital interface unit 40125. Is transmitted to the monitoring device 40300 via the connection cable 40200.

As described above, when it is found by the EDID data reading process that the monitoring device 40300 only supports the display of each video information having a frame rate of 60 Hz and 120 Hz, the broadcast receiving device 40100 can be used. The video asset A, the audio asset A, the data asset A, the video asset B, and the video asset C that constitute the package of the broadcast program are acquired, and only the coded data of the video asset A and the video asset B is used in the video decoder 141. The video data having a frame rate of 120 Hz may be reproduced by performing the decoding process.

The monitoring device 40300 receives the video data, audio data, and the like having a frame rate of 120 Hz transmitted from the broadcast receiving device 40100 in the predetermined format by a digital interface unit (not shown). Further, the monitor device 40300 displays the video information and audio information having a frame rate of 120 Hz obtained by performing predetermined signal processing on the received video data and audio data having a frame rate of 120 Hz, and a display device such as a liquid crystal panel. Provided to the user via the speaker.

<A-3> Data output control 3
When it is found by the EDID data reading process that the monitor device 40300 only supports the display of video information having a frame rate of 60 Hz, the broadcast receiving device 40100 is based on the control of the transport processing unit 1102a. First, the video asset A, the audio asset A, and the data asset A that constitute the package of the broadcast program are acquired. Video asset B and video asset C are not acquired. Further, the video decoder 141 decodes the encoded data of the video asset A to reproduce the video data having a frame rate of 60 Hz.

Further, the audio decoder 143 performs the decoding process of the audio asset A, and the data decoder 151 performs the decoding process of the data asset A. Next, the video composition unit 161 appropriately selects and / or superimposes the video data having a frame rate of 60 Hz output from the video color gamut conversion unit 142 and the additional data output from the data decoder 151. Next, based on the control of the output control unit 41102i, the video data with a frame rate of 60 Hz output from the video synthesis unit 161 and the audio data output from the audio synthesis unit 164 are processed in a predetermined format by the digital interface unit 40125. Is transmitted to the monitoring device 40300 via the connection cable 40200.

As described above, when it is found by the EDID data reading process that the monitor device 40300 only supports the display of video information having a frame rate of 60 Hz, the broadcast receiving device 40100 can be used to display the broadcast program. By acquiring the video asset A, the audio asset A, the data asset A, the video asset B, and the video asset C that constitute the package, and performing the decoding process in the video decoder 141 using only the encoded data of the video asset A. , Video data having a frame rate of 60 Hz may be reproduced.

The monitoring device 40300 receives the video data, audio data, and the like having a frame rate of 60 Hz transmitted from the broadcast receiving device 40100 in the predetermined format by a digital interface unit (not shown). Further, the monitor device 40300 displays the video information and audio information having a frame rate of 60 Hz obtained by performing predetermined signal processing on the received video data and audio data having a frame rate of 60 Hz, and a display device such as a liquid crystal panel. Provided to the user via the speaker.

<A-4> Data output control 4
Regardless of the result of the EDID data read processing (the EDID data supports / does not support the display of video information at a frame rate of 60 Hz and supports / does not support the display of video information at a frame rate of 120 Hz with respect to the monitor device 40300. In the broadcast receiving device 40100 of the present embodiment, the network communication processing of the LAN communication unit 121 is performed regardless of whether the correspondence or the display of the video information of the frame rate of 240 Hz is supported / not supported). When the function is disabled (for example, when the LAN cable is not connected to the LAN communication unit 121, when the power of the router device 200r is off, etc., or when the server device on the Internet 200 cannot be accessed, etc. , Etc.), or when the communication speed required to acquire the video asset B or video asset C cannot be secured, based on the control of the transport processing unit 1102a. , Only the video asset A, the audio asset A, and the data asset A constituting the package of the broadcast program are acquired, and the video data of the frame rate of 60 Hz is obtained by decoding the encoded data of the video asset A in the video decoder 141. You may try to play it. The following operations will be omitted.

By performing the above data output control, the broadcast receiving device 40100 of the present embodiment can perform data output control according to the frame rate corresponding performance of the monitor device connected via the connection cable.

Further, when the EDID data cannot be read out or when the EDID data does not describe the frame rate support performance of the monitor device, the same output control as in <A-4> described above is performed. Then, the video data having a frame rate of 60 Hz may be reproduced. That is, the video data having a frame rate of 60 Hz is more likely to be displayed on the monitor device than the video data having a frame rate of 120 Hz or 240 Hz.

When the broadcast receiving device 40100 of this embodiment is a DVD recorder or an HDD recorder and can record a broadcast program, the broadcast being recorded using the monitor device 40300 while performing the recording process of the broadcast program. It is possible to check the contents of the program. At this time, the handling of each asset constituting the package of the broadcast program may be different between the control of the recording process and the data output control.

For example, when it is found by the EDID data reading process that the monitor device 40300 only supports the display of video information having a frame rate of 60 Hz, the broadcast receiving device 40100 is based on the control of the transport processing unit 1102a. First, the video asset A, the audio asset A, the data asset A, the video asset B, and the video asset C that constitute the package of the broadcast program are acquired. Here, as the control of the recording process, the coded data of all the acquired video asset A, audio asset A, data asset A, video asset B, and video asset C are identified for the broadcast program. It is stored in the content storage area 1200 of the storage (storage) unit 110 in association with the identification information for the purpose. On the other hand, as the data output control, as in the above description, the video decoder 141 decodes only the encoded data of the video asset A to reproduce the video data having a frame rate of 60 Hz, and the audio decoder 143 The audio asset A is decoded, and the data decoder 151 is made to decode the data asset A.

By performing each of the above-mentioned controls, the data of all the assets constituting the package of the broadcast program will be stored in the content storage area 1200 of the storage (storage) unit 110. Therefore, when the broadcast program stored in the content storage area 1200 of the storage (storage) unit 110 is reproduced at a later date, the data output control according to the display performance of the monitor device connected at that time is performed again. It becomes possible.

That is, the monitor device 40300 connected when the broadcast program stored in the content storage area 1200 of the storage (storage) unit 110 is reproduced at a later date corresponds to the display of video information at frame rates of 60 Hz, 120 Hz, and 240 Hz. If so, the video data having a frame rate of 240 Hz is subjected to the decoding process using the encoded data of the video asset A, the video asset B, and the video asset C stored in the content storage area 1200 of the storage (storage) unit 110. Can be reproduced and output to the monitor device 40300.

Further, the monitor device 40300 connected when the broadcast program stored in the content storage area 1200 of the storage (storage) unit 110 is reproduced at a later date supports only the display of video information having a frame rate of 60 Hz and 120 Hz. Then, by performing a decoding process using the encoded data of the video asset A and the video asset B stored in the content storage area 1200 of the storage (storage) unit 110, the video data having a frame rate of 120 Hz can be reproduced. It is possible to output to the monitor device 40300.

Further, if the monitor device 40300 connected when the broadcast program stored in the content storage area 1200 of the storage (storage) unit 110 is reproduced at a later date is only compatible with the display of video information having a frame rate of 60 Hz. By performing decoding processing using only the encoded data of the video asset A stored in the content storage area 1200 of the storage (storage) unit 110, the video data having a frame rate of 60 Hz is reproduced and output to the monitor device 40300. It becomes possible to do.

That is, in the broadcast receiving device 40100 of the present embodiment, when the recorded program of the broadcasting service adopting MMT as the media transport method is reproduced from the content storage area 1200 of the storage (storage) unit 110, the connection cable (this embodiment). In the example, it can be said that the data output control may be performed according to the frame rate corresponding performance of the monitor device (monitor device 40300 in this embodiment) connected via the connection cable 40200).

Further, in the above description, as shown in the system configuration diagram of FIG. 28, the broadcast receiving device 40100 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, and is connected by a connection cable 40200. The description has been made assuming that video information and audio information are provided to the user via the monitor unit and the speaker of the monitor device 40300. However, this is only an example, and the above-mentioned data output control may be performed in the configuration of the broadcast receiving device 100 (see FIG. 7A) described in the first embodiment.

That is, the monitor unit 162 supports the display of video information at frame rates of 60 Hz, 120 Hz, and 240 Hz based on the control of the presentation processing unit 1102h according to the frame rate support performance at the time of video display in the monitor unit 162 of FIG. 7A. If this is the case, the same processing as in the data output control 1 of <A-1> may be performed, and the video information of the frame rate 240 Hz output from the video synthesis unit 161 may be displayed on the monitor unit 162.

When the monitor unit 162 supports only the display of each video information having a frame rate of 60 Hz and 120 Hz, the same processing as in the data output control 2 of <A-2> is performed and the video synthesizer unit 161 outputs the data. The video information having a frame rate of 120 Hz may be displayed on the monitor unit 162. When the monitor unit 162 only supports the display of video information having a frame rate of 60 Hz, the same processing as in the data output control 3 of <A-3> is performed, and the frame output from the video synthesis unit 161 is performed. The video information at a rate of 60 Hz may be displayed on the monitor unit 162.

Regardless of the performance of the monitor unit 162, if the network communication processing function of the LAN communication unit 121 is disabled or the communication speed for acquiring the necessary assets cannot be secured, the above <A-4> The same processing as in the data output control 4 of 4 may be performed, and the video information of the frame rate of 60 Hz output from the video synthesis unit 161 may be displayed on the monitor unit 162.

Further, when the broadcast receiving device 100 has a function of recording a broadcast program and the monitor unit 162 confirms the content of the broadcast program being recorded while performing the recording process of the broadcast program, the same as described above. The handling of each asset constituting the package of the broadcast program may be different between the control of the recording process and the data output control. The detailed description of the operation will be omitted with reference to the above.

(B) Output control according to the 3D display performance of the monitor device The following is a connection cable (in this embodiment) when the broadcast receiving device 40100 of this embodiment receives a broadcasting service that employs MMT as the media transport method. Shows an example of data output control according to the 3D display performance of the monitor device (monitor device 40300 in this embodiment) connected via the connection cable 40200).

First, the data structure of the broadcast service received by the broadcast receiving device 40100 of this embodiment will be described. For example, the broadcast program provided by the broadcasting service is composed of a 120 Hz left-eye video frame and a right-eye video frame, respectively, and the left-eye video frame and the right-eye video frame are transmitted in a frame sequential manner in 3D. It is video information, and when the package is generated in the broadcasting station, as shown in FIG. 33A, the video asset A is generated from the left eye video frames of the video frames F00, F02, F04, F06, ..., And the video frame F01, It is assumed that the video asset B is generated by the video frame for the right eye of F03, F05, F07, and. Further, the compression coding process may be completed with a left-eye video frame having a frame rate of 120 Hz and a right-eye video frame having a frame rate of 120 Hz, respectively, and the left-eye video frame having a frame rate of 120 Hz may be independently compressed. The right-eye video frame having a frame rate of 120 Hz may be generated by the difference from the paired left-eye video frame after the conversion process is completed.

By generating the package as described above, in the data structure of the broadcasting service, only the coded data included in the video asset A is used as a frame (by regarding the left eye video frame as a 2D video frame). It is possible to reproduce a 2D image having a rate of 120 Hz, and by using the coded data of the image asset A and the image asset B, it is possible to reproduce a 3D image by frame sequential.

As shown in FIG. 33B, the video asset A is an IP data flow included in a TLV stream via a broadcast transmission line, and is transmitted to the broadcast receiving device 40100. Further, it is assumed that the video asset B is delivered to the broadcast receiving device 40100 by an IP data flow via a communication line. As described with reference to FIG. 6E, the video asset B is associated with the video asset A by the package ID, asset ID, etc. included in the MPT of the MMT-SI, and can be acquired from the network by the location information, etc. It shall be possible.

Using FIG. 34, the broadcast receiving device 40100 of the present embodiment corresponds to the 3D display performance of the monitoring device connected via the connection cable, which is performed when receiving the broadcasting service adopting MMT as the media transport method. An example of the operation of data output control will be described.

The output control unit 41102i of the broadcast receiving device 40100 of this embodiment first passes through the DDC line of the connection cable 40200, the transmission processing unit 40125b of the digital interface unit 40125, and the transmission control unit 40125a, and the EDID storage unit 40325c of the monitoring device 40300. Read the EDID data stored in.

<B-1> Data output control 1
When it is found that the monitor device 40300 supports the display of 3D images by the EDID data reading process, the broadcast receiving device 40100 first receives the broadcast program based on the control of the transport processing unit 1102a. Acquire the video asset A, the audio asset A, the data asset A, and the video asset B that compose the package. Further, the video decoder 141 reproduces the video data of the left eye video frame having a frame rate of 120 Hz and the video data of the right eye video frame having a frame rate of 120 Hz by decoding the encoded data of the video asset A and the video asset B. To do. Further, the audio decoder 143 performs the decoding process of the audio asset A, and the data decoder 151 performs the decoding process of the data asset A. Next, the video compositing unit 161 performs a packing process according to the input 3D video format supported by the monitor device 40300.

In the packing process, for example, when the monitor device 40300 supports the 3D video format input of the "Flame Packing" method, the video data of the left eye video frame and the video data of the right eye video frame are vertically oriented. The video compositing unit 161 performs scaling / compositing processing so that the blank layer is inserted into the same frame. When the monitor device 40300 supports 3D video format input of the "Side-by-side Half" method, the video data of the left eye video frame and the video data of the right eye video frame are connected to the left and right. The video compositing unit 161 performs scaling / compositing processing so that the number of scanning lines is maintained and the same frame is contained. When the monitor device 40300 supports the "Top-and-Bottom" type 3D video format input, the video data of the left eye video frame and the video data of the right eye video frame are connected vertically and horizontally. The video compositing unit 161 performs scaling / compositing processing so as to maintain the resolution and fit in the same frame. When other 3D video format inputs are supported, the video compositing unit 161 may appropriately perform scaling / compositing processing as necessary.

Next, based on the control of the output control unit 41102i, the packed video data with a frame rate of 120 Hz output from the video synthesis unit 161 and the audio data output from the audio synthesis unit 164 are digitally interfaced in a predetermined format. The data is transmitted from the unit 40125 to the monitoring device 40300 via the connection cable 40200.

The monitoring device 40300 receives the packed video data, audio data, and the like having a frame rate of 120 Hz transmitted from the broadcast receiving device 40100 in the predetermined format by a digital interface unit (not shown). In addition, the monitor device 40300 receives video information of a left-eye video frame having a frame rate of 120 Hz and a right-eye video frame having a frame rate of 120 Hz obtained by performing predetermined signal processing on the received packed video data having a frame rate of 120 Hz. The video information is alternately displayed on a display device such as a liquid crystal panel, and the audio information obtained by performing predetermined signal processing on the received audio data or the like is output from the speaker. The details of the processing of the packed video data in the monitor device 40300 are the same as those of a general 3D compatible TV device, and thus the description thereof will be omitted.

<B-2> Data output control 2
When it is determined by the EDID data reading process that the monitor device 40300 does not support the display of the 3D image, the broadcast receiving device 40100 first, based on the control of the transport processing unit 1102a, first determines the broadcast program. Acquire the video asset A, the audio asset A, and the data asset A that compose the package. Video asset B is not acquired. Further, the video decoder 141 decodes the encoded data of the video asset A to reproduce the video data of the left eye video frame having a frame rate of 120 Hz. Further, the audio decoder 143 performs the decoding process of the audio asset A, and the data decoder 151 performs the decoding process of the data asset A.

The video decoder 141 outputs the video data of the left-eye video frame having a frame rate of 120 Hz reproduced by the decoding process as 2D video data. Next, based on the control of the output control unit 41102i, the 2D video data output from the video synthesis unit 161 and the audio data output from the audio synthesis unit 164 are connected from the digital interface unit 40125 in a predetermined format. It is transmitted to the monitoring device 40300 via the cable 40200.

As described above, when it is determined by the EDID data reading process that the monitor device 40300 does not support the display of 3D video, the broadcast receiving device 40100 constitutes the video that constitutes the broadcast program package. A video frame for the left eye with a frame rate of 120 Hz is obtained by acquiring asset A, audio asset A, data asset A, and video asset B, and performing decoding processing using only the encoded data of the video asset A in the video decoder 141. It is also possible to reproduce only the video data of.

The monitoring device 40300 receives the 2D video data, audio data, and the like having a frame rate of 120 Hz transmitted from the broadcast receiving device 40100 in the predetermined format by a digital interface unit (not shown). Further, the monitor device 40300 displays the 2D video information and audio information having a frame rate of 120 Hz obtained by performing predetermined signal processing on the received 2D video data and audio data having a frame rate of 120 Hz, and the like on a liquid crystal panel or the like. Provided to the user via the device and speaker.

<B-3> Data output control 3
Regardless of the result of the EDID data read processing, in the broadcast receiving device 40100 of this embodiment, when the network communication processing function of the LAN communication unit 121 is disabled or the video asset B is acquired. If the communication speed required for the above cannot be secured, only the video asset A, the audio asset A, and the data asset A constituting the broadcast program package are acquired based on the control of the transport processing unit 1102a, and the video decoder 141 is acquired. In, the video data of the left-eye video frame having a frame rate of 120 Hz may be reproduced by decoding the coded data of the video asset A. The description of the subsequent operations will be omitted.

By performing the above data output control, the broadcast receiving device 40100 of the present embodiment can perform data output control according to the 3D display performance of the monitor device connected via the connection cable.

Further, when the EDID data cannot be read out or when the EDID data does not describe the 3D display performance of the monitor device, the same output control as in <B-3> described above is performed. , The video data of the left eye video frame having a frame rate of 120 Hz may be reproduced. The video data may be further down-converted and reproduced as 2D video data having a frame rate of 60 Hz. Further, even when it is understood that the monitor device supports the display of 3D images, if the information regarding the packing processing that can be supported cannot be grasped, the above-mentioned <B-3> is still used. The same output control may be performed. Alternatively, a predetermined packing process may be selected to perform the same output control as in <B-1> described above. The predetermined packing process may be arbitrarily selected by the user.

In the data output control of the above (B), the broadcast receiving device 40100 of this embodiment is a DVD recorder or an HDD recorder, and the recording of the broadcast program is performed in the same manner as in the above-described data output control of the (A). It can be applied to data output control when the content of the broadcast program being recorded is confirmed by using the monitor device 40300 while performing the processing. Further, also in the configuration of the broadcast receiving device 100 (see FIG. 7A) described in the first embodiment, the data output control of the above (B) is added to the data output control according to whether or not the monitor unit 162 can support the display of the 3D image. Can be applied.

(C) Output control according to the resolution-compatible performance of the monitor device The following is a connection cable (in this embodiment) when the broadcast receiving device 40100 of this embodiment receives a broadcasting service that employs MMT as the media transport method. Shows an example of data output control according to the resolution-compatible performance of the monitor device (monitor device 40300 in this embodiment) connected via the connection cable 40200).

The original number of pixels of each frame of the broadcast program provided by the broadcasting service is 7680 × 4320 pixels, and 1920 × 1080 pixels extracted from all the pixels by the first extraction method when the package is generated at the broadcasting station. The video asset A is generated by the above, and the video asset B is generated by the difference between the 3840 × 2160 pixels extracted by the second extraction method from all the pixels and the pixels included in the video asset A. Video asset C is generated by the difference between the original 7680 × 4320 pixels and the pixels included in the video asset A and the video asset B.

In this case as well, as in the data output control of (A), if the monitor device 40300 supports high resolution display (display of 7680 × 4320 pixels) according to the resolution support performance of the monitor device 40300, the video decoder If the encoded data of the video asset A, the video asset B, and the video asset C are decoded in 141 and the monitor device 40300 supports medium resolution display (display of 3840 × 2160 pixels), the video decoder 141 can display the video. If only the coded data of asset A and video asset B is decoded and the monitor device 40300 supports low resolution display (display of 1920 x 1080 pixels), only the coded data of video asset A is displayed in the video decoder 141. To decrypt.

Although detailed description below will be omitted, by performing the above data output control, in the broadcast receiving device 40100 of this embodiment, data output control according to the resolution corresponding performance of the monitor device connected via the connection cable is performed. Can be done. Further, when the EDID data cannot be read out, or when the EDID data does not describe the resolution-compatible performance of the monitor device, the above-mentioned monitor device 40300 supports only low-resolution display. The same control as when there is is sufficient.

In the present embodiment, an example of output control according to various display performances of the monitor device has been described. However, even if these output controls are set at the time of shipment, the output control settings of the output data format under each condition can be changed by manual setting by the user's menu operation or the like via the operation input unit 170. It is desirable to configure. Even if correct information about the performance of the monitor device cannot be obtained due to a defect in the broadcast receiver 40100 itself or the software of the monitor device, the user can be configured to obtain the data output required by the user by manual setting. This is because it is possible to prevent disadvantages from occurring.

As described above, according to the broadcast receiving device 40100 of the present embodiment, it is possible to perform output control according to the display performance of the monitor device acquired from the monitor device connected by the connection cable. , It is possible to provide a broadcast receiving device capable of executing a function with higher added value.

(Example 4)
Hereinafter, Example 4 of the present invention will be described. The system configuration in this embodiment is the same as that shown in FIG. 28, and the hardware configuration of the broadcast receiving device is the same as that in FIG. 29A. Therefore, the description of the system configuration and the hardware configuration will be omitted to avoid duplication. Hereinafter, the software configuration and data output control of the broadcast receiving device in this embodiment, which are different from the description of the third embodiment, will be described.

[Software configuration of broadcast receiver]
FIG. 35 is a software configuration diagram of the broadcast receiving device 40100 of this embodiment, and shows the software configuration of the ROM 103, the RAM 104, and the storage (storage) unit 110. It is assumed that the server function program 41003 is added to the storage (storage) unit 110 as compared with the software configuration diagram in the broadcast receiving device 40100 of the third embodiment. Further, the storage (storage) unit 110 includes a server data storage area 41400 for storing various data (applications, contents, other data, etc.) used for services provided to external devices connected via a network. To do. Further, since the reception function execution unit 1102 in the RAM 104 is the same as the software configuration diagram (FIG. 29B) of the third embodiment, it is omitted, but it is assumed that it has the same processing units as the third embodiment. ..

The server function program 41003 stored in the storage (storage) unit 110 is expanded in the RAM 104, and the main control unit 101 further executes the expanded server function program to form the server function execution unit 41103. The server function execution unit 41103 manages various data (applications, contents, other data, etc.) stored in the server data storage area 41400, and controls the process of distributing the various data in response to a request from an external device. And, if necessary, the authentication process of the external device, etc. shall be performed. That is, the broadcast receiving device 40100 also has a function as a general server device by the server function executing unit 41103 and the server data storage area 41400.

[Interface configuration of broadcast receiver and monitor device]
FIG. 36 is a system configuration diagram showing an example of an interface configuration between the broadcast receiving device 40100 and the monitoring device 40300. In this embodiment, the connection terminal of the digital interface section 40125 on the broadcast receiving device 40100 side and the connection terminal of the digital interface section omitted on the monitoring device 40300 side are connected by the connection cable 40200a. explain.

Similar to the connection cable 40200 (see FIG. 30) described in the third embodiment, the connection cable 40200a is composed of n pairs of differential transmission lanes of CH1 to CHn, a DDC line, an HPD line, a CEC line, and the like. Further, it is assumed that it has an m pair of communication lines (TX / RX lines in the figure). Each pair of the communication lines may be a differential transmission lane or a twisted pair of a signal line and a GND line. Further, the m-pair communication line may be one pair of transmission lines (transmission seen from the broadcast reception device 40100 side) and one pair of reception lines (reception seen from the broadcast reception device 40100 side). It may be two pairs of transmission lines (transmission seen from the broadcast receiving device 40100 side) and two pairs of receiving lines (reception seen from the broadcast receiving device 40100 side). It may be a 4-pair transmission / reception line. In addition, all or part of the DDC line, HPD line, or CEC line may be used as a part of the communication line.

The communication line shall have the same performance / function as the LAN cable connected to the LAN communication unit 121, and the transmission control unit 40125d of the digital interface unit 40125 on the broadcast receiving device 40100 side and the digital on the monitoring device 40300 side. The reception control unit 40325d of the interface unit has the same functions as the transmission control unit 40125a and the reception control unit 40325a shown in FIG. 30, and further has the same network communication function as the LAN communication unit 121. That is, the communication line of the connection cable 40200a is a narrow network in which only the broadcast receiving device 40100 and the monitoring device 40300 are connected.

[Data output control of broadcast receiver]
The broadcast receiving device 40100 of this embodiment has a function of performing output control according to the display performance of the monitor device acquired from the monitor device connected by the connection cable. In the following, a monitor device (the present embodiment) connected via a connection cable (in this embodiment, the connection cable 40200a) when receiving a broadcast service of the broadcast receiving device 40100 that employs MMT as the media transport method. In the example, an example of data output control according to the network communication processing performance of the monitoring device 40300) will be described.

First, the broadcast receiving device 40100 of the present embodiment receives a control signal (MMT) included in the MMT data string output from the tuner / demodulation unit 131 when receiving a broadcast service that employs MMT as the media transport method. -SI) MH-AIT. FIG. 37 shows an example of the data structure of MH-AIT. The broadcast receiving device 40100 has an application control code (in the figure) among linked data (applications, contents, other data, etc.) related to a broadcast program scheduled to be broadcast in the future, based on the description of the MH-AIT referred to above. If "application_control_code" is specified by "PREFETCH (acquire and hold)" or the like, the cooperation data is acquired in advance from a predetermined server device on the network, and the storage (storage) unit It is stored in the server data storage area 41400 of 110.

For example, as shown in FIG. 38, the event of the broadcast program is composed of video asset A, audio asset A, and data asset B, and the data asset B is designated by MPT and MH-AIT to be a predetermined server. If it can be acquired in advance from the device, the broadcast receiving device 40100 acquires the data asset B in advance and stores it in the server data storage area 41400 of the storage (storage) unit 110.

Further, the broadcast receiving device 40100 transmits the EDID data stored in the EDID storage unit 40235c of the monitor device 40300 via the DDC line of the connection cable 40200a and the transmission processing unit 40125b and the transmission control unit 40125d of the digital interface unit 40125. It is assumed that the display performance of the reading and monitoring device 40300 has been confirmed.

For example, when the monitor device 40300 is a device having a LAN communication function, the output control unit 41102i of the broadcast reception device 40100 indicates that the monitor device 40300 supports network communication processing by the EDID data read processing. Grasp. In this case, the broadcast receiving device 40100 receives the TLV stream transmitted on the broadcast transmission line at the broadcast time of the broadcast program by the tuner / demodulation unit 131, and separates the MMT data string including the video asset A and the audio asset A. Input to unit 132. The output control unit 41102i of the broadcast receiving device 40100 outputs the MMT data string as it is from the separation unit 132, and controls it so that it can be output to the monitoring device 40300 via the data lane of the digital interface unit 40125 and the connection cable 40200a. .. Here, the broadcast receiving device 40100 transmits, for example, the MMT data string including the video asset A and the audio asset A received by the tuner / demodulation unit 131 via the broadcast transmission line which is unidirectional transmission in one direction of 40200a. It may be transmitted by a line (CH1, CH2, ... CHn, etc. in FIG. 36).

In the monitor device 40300, the MMT data string transmitted from the broadcast receiving device 40100 is received by the digital interface unit, and the received MMT data string is input to the MMT decoding processing unit. The MMT decoding processing unit refers to the MMT-SI of the MMT data string, and is stored in a predetermined server device on the network via a communication circuit capable of bidirectional communication based on the location information of the MPT and the like. Get the existing data asset B. Further, the acquired data asset B and the video asset A and the audio asset A included in the received MMT data string are decoded, and the video information and the audio information are provided to the user via the monitor unit and the speaker.

On the other hand, when the monitor device 40300 is a device that does not have a LAN communication function, the output control unit 41102i of the broadcast receiving device 40100 supports the network communication process by the EDID data reading process. Know that there isn't. In this case, the broadcast receiving device 40100 receives the TLV stream transmitted on the broadcast transmission line at the broadcast time of the broadcast program by the tuner / demodulation unit 131, and separates the MMT data string including the video asset A and the audio asset A. Input to unit 132. Further, the output control unit 21102i of the broadcast receiving device 40100 rewrites the location information and the like in the MMT-SI of the MMT data string with respect to the MMT data string output from the separation unit 132. Further, the MMT data string obtained by rewriting the location information or the like is controlled so that it can be output to the monitoring device 40300 via the data lane of the digital interface unit 40125 and the connection cable 40200a. Also in this case, the broadcast receiving device 40100, for example, transmits the MMT data string including the video asset A and the audio asset A received by the tuner / demodulation unit 131 via the broadcast transmission line which is one-way transmission in one direction of 40200a. It may be transmitted on a transmission line (CH1, CH2, ... CHn, etc. in FIG. 36).

Specifically, the rewriting process of the location information or the like is data in which the location information (corresponding to “MMT_general_location_info ()” shown in FIG. 17) related to the data asset B included in the MPT is multiplexed in the IPv4 data flow. From "location_type = 0x01" indicating that the data is, and "location_type = 0x02" indicating that the data is multiplexed in the IPv6 data flow, to "location_type = 0x05" indicating that the data is at the specified URL. You can rewrite it. Further, the designated URL may be set so as to point to the server data storage area 41400 managed by the server function execution unit 41103.

In the monitor device 40300, the MMT data string transmitted from the broadcast receiving device 40100 via the data lane of the one-way transmission of the connection cable 40200a is received by the digital interface unit, and the received MMT data string is received by the MMT decoding processing unit. Enter in. The MMT decoding processing unit refers to the MMT-SI included in the MMT data string, and broadcasts via a TX / RX line capable of bidirectional transmission of the connection cable 40200a based on location information and the like included in the MPT. Requests the receiving device 40100 to transmit the data asset B.

The broadcast receiving device 40100 is capable of bidirectional transmission of data of data asset B stored in the server data storage area 41400 of the storage (storage) unit 110 (the broadcast receiving device 40100 is capable of bidirectional transmission) based on the control of the server function executing unit 41103. Data assets acquired from a predetermined number on the network via a communication circuit) are transmitted to the monitoring device 40300 via the TX / RX line, which is a line capable of bidirectional transmission of the connection cable 40200a. The monitor device 40300 decodes the video asset A and the audio asset A included in the data asset B received via the TX / RX line of the connection cable 40200a and the MMT data string received via the data lane of the connection cable 40200a. , The video information and the audio information are provided to the user via the monitor unit and the speaker. For example, if the data asset B is a video asset, an image asset, or a character asset, it is decoded and output to the monitor unit together with the decoded video of the video asset A. If the data asset B is a voice asset, it is decoded and output from the speaker together with the decoded voice of the voice asset A.

As described above, according to the broadcast receiving device 40100 of the present embodiment, it is possible to perform output control according to the display performance of the monitor device acquired from the monitor device connected by the connection cable. , It is possible to provide a broadcast receiving device capable of executing a function with higher added value.

In the above example, the MMT data string including the video asset A and the audio asset A is transmitted to the monitor device 40300 via the data lane of the connection cable 40200a, and the monitor device 40300 decodes the MMT data string. By performing the processing, the video information and the audio information are reproduced. On the other hand, the broadcast receiving device 40100 may perform the decoding processing of the video asset A and the audio asset A.

That is, the broadcast receiving device 40100 receives the TLV stream transmitted on the broadcast transmission line at the broadcast time of the broadcast program by the tuner / demodulation unit 131, and separates the MMT data string including the video asset A and the audio asset A. Enter in 132. The separation unit 132 extracts a video data string, an audio data string, and the like based on the control signal (MMT-SI) included in the MMT data string, and distributes them to the video decoder 141 and the audio decoder 143, respectively. In the video decoder 141 and the audio decoder 143, the video data string and the audio data string are subjected to a predetermined decoding process, and further, the video color gamut conversion process in the video color gamut conversion unit 142 is performed, and then the video information and the audio information are input. It is output to the video synthesis unit 161 and the audio synthesis unit 164.

The output control unit 41102i of the broadcast receiving device 40100 matches the video information and audio information output from the video synthesis unit 161 and the audio synthesis unit 164 with, for example, the HDMI (registered trademark) specification and the DisplayPort (registered trademark) specification. In the form, it is transmitted to the monitoring device 40300 via the digital interface unit 40125 and the unidirectional transmission data lane of the connection cable 40200a. At this time, in the spare area of the HDMI format or DisplayPort format, the data asset B can be acquired via the communication line of the connection cable 40200a, and the access destination for acquiring the data asset B. URL information, etc. may be described.

On the monitor device 40300 side, the video information and audio information received by the digital interface unit via the data lane of the connection cable 40200a are input to the MMT decoding processing unit. The MMT decoding processing unit does not perform decoding processing of the MMT data string, but performs processing such as brightness adjustment, contrast adjustment, and volume adjustment on the input video information and audio information as necessary. On the other hand, the monitoring device 40300 transmits the data asset B to the broadcast receiving device 40100 via the TX / RX line capable of bidirectional transmission of the connection cable 40200a based on the information described in the spare area. Request. The broadcast receiving device 40100 can bidirectionally transmit the data of the data asset B stored in the server data storage area 41400 of the storage (storage) unit 110 to the connection cable 40200a under the control of the server function executing unit 41103. It is transmitted to the monitoring device 40300 via the TX / RX line.

The monitor device 40300 interprets the data asset B received via the TX / RX line of the connection cable 40200a to generate data content, and together with the decoded video acquired via the data lane of the one-way transmission of the connection cable 40200a. Video information and audio information are provided to the user via the monitor unit and the speaker. For example, if the data asset B is a video asset, an image asset, or a character asset, it is decoded and output to the monitor unit together with the decoded video of the video asset A. If the data asset B is a voice asset, it is decoded and output from the speaker together with the decoded voice of the voice asset A.

As described above, even when the video asset A and the audio asset A are decoded on the broadcast receiving device 40100 side, the broadcast receiving device 40100 of the present embodiment is connected by a connection cable. It is possible to perform output control according to the display performance of the monitor device acquired from the monitor device, that is, it is possible to provide a broadcast receiving device capable of executing a function having higher added value.

In this embodiment, the data of the data asset B is transmitted from the broadcast receiving device 40100 to the monitoring device 40300 via the TX / RX line without using the data lane of the connection cable 40200a, the CEC line, or the like. Is going. That is, by using a dedicated line (that is, the TX / RX line) for transmitting various data (applications, contents, other data, etc.) provided to the monitor device 40300, the data transmission capacity of the data lane is compressed. In addition, there is an advantage that the various data can be transmitted at high speed in parallel with the communication processing using the DDC line or the CEC line.

When the location information included in the MMT data string transmitted by the broadcast receiving device 40100 via the broadcast transmission network of digital broadcasting indicates a URL, the URL is the IP address of the external network from the viewpoint of the broadcast receiving device 40100. Will be shown. On the other hand, since the broadcast receiving device 40100 and the monitoring device 40300 are directly connected by a wired cable, it points to the server data storage area 41400 managed by the server function execution unit 41103 in the broadcast receiving device 40100 after the connection. For that purpose, it is sufficient to point to the IP address in the same subnet mask as the IP address of the monitoring device 40300.

Therefore, the location information rewriting process of the present embodiment when the location information included in the MMT data string transmitted by the broadcast receiving device 40100 via the broadcast transmission network of digital broadcasting indicates a URL is the broadcast receiving device 40100. Location information indicating an IP address that is not in the same subnet mask as the subnet mask to which the IP address of the monitor device 40300 and the IP address of the monitor device 40300 belong, and the subnet mask to which the IP address of the broadcast receiving device 40100 and the IP address of the monitor device 40300 belong. It can be said that this is a process of rewriting the location information indicating the IP address in the same subnet mask as.

Further, in the present embodiment, as described above, the data included in the data flow acquired by the broadcast receiving device 40100 via the broadcast transmission line which is unidirectional transmission and the data acquired via the communication line capable of bidirectional transmission. The data included in the data flow is output via different lines even though it is the same wired digital interface. By using different lines in this way, it is possible to output each of the two data flows without performing special multiplexing for making one data flow.

That is, for example, in the example of FIG. 38, the IP data flow acquired by the broadcast receiving device 40100 via the broadcast transmission line and the IP data flow acquired by the broadcast receiving device 40100 via the communication line have location information rewriting. , The IP data flow of the output signal 1 and the IP data flow of the output signal 2 are output without being multiplexed with each other. Then, since it is not necessary to perform a special multiplexing process of the IP data flow of the output signal 1 and the IP data flow of the output signal 2, it is not necessary to equip the monitoring device with a separation process corresponding to the special multiplexing. .. Rather, if both the output signal 1 and the output signal 2 are configured to be output in the MMT format, if the monitoring device has an MMT decoder similar to that of the broadcast receiving device 40100, no special separation processing is performed. Since the output signal 1 and the output signal 2 can be decoded, the output state is very versatile as a system and is useful.

Further, in the present embodiment, as described above, the data included in the data flow acquired by the broadcast receiving device 40100 via the broadcast transmission line which is one-way transmission is externally transmitted via the one-way transmission line of the wired digital interface. The data included in the data flow that is output to the monitor device, which is the device, and is acquired via the communication line capable of bidirectional transmission, is an external device via the transmission line capable of bidirectional transmission of the wired digital interface. Output to the monitor device. The monitoring device acquires data acquired by the broadcast receiving device 40100 via a broadcast transmission line that is unidirectional transmission on a one-way transmission line, and data acquired by the broadcast receiving device 40100 via a communication line that is bidirectional transmission. Is acquired by the bidirectional transmission line, so that the processing affinity with the broadcast receiving device of this embodiment is high. That is, the monitor device can be manufactured by diverting a part of the processing circuit of the broadcast receiving device, the number of dedicated processing circuits is reduced, and the monitoring device capable of receiving the output data of the broadcast receiving device of this embodiment is manufactured at low cost. It will be possible. Therefore, it is possible to provide a more suitable system to the user at low cost.

The one-way communication transmission line described in this embodiment may be physically one line or a group of lines in which a plurality of lines are combined. The transmission line capable of bidirectional communication described in this embodiment may be physically one line, or may be a group of lines that combine a plurality of lines and perform transmission using a bidirectional communication protocol.

In the present embodiment, an example of output control according to various display performances of the monitor device has been described. However, even if these output controls are set at the time of shipment, the output control settings of the output data format under each condition can be changed by manual setting by the user's menu operation or the like via the operation input unit 170. It is desirable to configure. Even if correct information about the performance of the monitor device cannot be obtained due to a defect in the broadcast receiver 40100 itself or the software of the monitor device, the user can obtain the data output required by the user by manual setting. This is because it is possible to prevent the disadvantage from occurring.

Although the examples of the embodiments of the present invention have been described above with reference to Examples 1 to 4, the configuration for realizing the technique of the present invention is not limited to the above-mentioned Examples, and various modified examples can be considered. For example, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. All of these belong to the category of the present invention. In addition, numerical values and messages appearing in sentences and figures are merely examples, and the effects of the present invention may not be impaired even if different ones are used.

The above-mentioned functions and the like of the present invention may be realized by hardware, for example, by designing a part or all of them by an integrated circuit. Further, it may be realized by software by interpreting and executing an operation program in which the microprocessor unit or the like realizes each function or the like. Hardware and software may be used together.

The software that controls the broadcast receiving device 100 may be stored in the ROM 103 and / or the storage (storage) unit 110 or the like of the broadcast receiving device 100 in advance at the time of product shipment. After the product is shipped, it may be acquired from another application server 500 or the like on the Internet 200 via the LAN communication unit 121. Further, the software stored in a memory card, an optical disk, or the like may be acquired via the expansion interface unit 124 or the like.

In addition, the control lines and information lines shown in the figure indicate what is considered necessary for explanation, and do not necessarily indicate all the control lines and information lines on the product. In practice, it can be considered that almost all configurations are interconnected.

100,800,40100 ... Broadcast receiver, 100a, 40100a ... Antenna, 101,801 ... Main control unit, 102,802 ... System bus, 103,803 ... ROM, 104,804 ... RAM, 110,810 ... Storage unit, 121,821 ... LAN communication unit, 124,824 ... expansion interface unit, 125,825,40125 ... digital interface unit, 131,831,832 ... tuner / demodulation unit, 132 ... separation unit, 141 ... video decoder, 142 ... video Color range conversion unit, 143 ... Audio decoder, 144 ... Character super decoder, 145 ... Subtitle decoder, 146 ... Subtitle synthesis unit, 147 ... Subtitle color range conversion unit, 151 ... Data decoder, 152 ... Cache unit, 153 ... Application control unit , 154 ... Browser unit, 155 ... Application color range conversion unit, 156 ... Sound source unit, 161,861 ... Video synthesis unit, 162,862 ... Monitor unit, 163,863 ... Video output unit, 164,864 ... Audio synthesis unit, 165,865 ... Speaker unit, 166,866 ... Audio output unit, 170,870 ... Operation input unit, 841 ... MMT decoding processing unit, 842 ... MPEG2-TS decoding processing unit, 200 ... Internet, 200r ... Router device, 200a ... Access point, 300t ... radio tower, 300s ... broadcasting satellite (or communication satellite), 300 ... broadcasting station server, 400 ... service provider server, 500 ... other application server, 600 ... mobile telephone communication server, 600b ... base station , 700 ... Mobile information terminal, 40200, 40200a ... Connection cable, 40300 ... Monitor device.

Claims (1)

The media transport format is a data output method for program content in a broadcast receiving device that receives program content transmitted by MMT.
A step of receiving MMT data in which the program content is stored via a broadcast transmission line, and
It includes a first output step of outputting the MMT data to another device while the media transport format is MMT.
The MMT data stores location information indicating the acquisition destination of the data constituting the program content.
In the first output step, there is an output state in which the location information of the MMT is rewritten and output, and in the rewriting process of the location information in the output state, information indicating an acquisition destination on the external network is obtained. It rewrites the server function of the broadcast receiver to the information indicated as the acquisition destination.
further,
Data constituting the program content stored in the storage unit included in the broadcast receiving device in response to a transmission request for data constituting the program content received from the other device after the first output step. A second output step is provided to output the data to the other device.
Data output method.