WO2008056441A1 - Dispositif de terminal - Google Patents

Dispositif de terminal Download PDF

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Publication number
WO2008056441A1
WO2008056441A1 PCT/JP2007/001195 JP2007001195W WO2008056441A1 WO 2008056441 A1 WO2008056441 A1 WO 2008056441A1 JP 2007001195 W JP2007001195 W JP 2007001195W WO 2008056441 A1 WO2008056441 A1 WO 2008056441A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
content
broadcast
communication
data
Prior art date
Application number
PCT/JP2007/001195
Other languages
English (en)
Japanese (ja)
Inventor
Yoshinori Hatayama
Yasukazu Kamei
Takenori Mikoshi
Original Assignee
Sanyo Electric Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2006304596A external-priority patent/JP2010028152A/ja
Priority claimed from JP2006304609A external-priority patent/JP2010028153A/ja
Application filed by Sanyo Electric Co., Ltd. filed Critical Sanyo Electric Co., Ltd.
Publication of WO2008056441A1 publication Critical patent/WO2008056441A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/24—Arrangements for distribution of identical information via broadcast system and non-broadcast system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
    • H04H60/12—Arrangements for counter-measures when a portion of broadcast information is unavailable wherein another information is substituted for the portion of broadcast information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/21—Billing for the use of broadcast information or broadcast-related information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/90—Wireless transmission systems
    • H04H60/91—Mobile communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/90—Wireless transmission systems
    • H04H60/92—Wireless transmission systems for local area

Definitions

  • the present invention relates to communication technology, and more particularly to a terminal device in a wireless network.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2 00 2 _ 1 6 4 8 60
  • broadcasters create and store programs.
  • content some of the stored programs (hereinafter referred to as “content”) are unpublished videos that are not subject to broadcasting. Includes music.
  • the user may wish to view unreleased video or music that is not broadcast. Therefore, it is desirable to distribute contents such as unreleased videos individually according to the user's wishes.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique capable of easily acquiring content of a broadcasting station.
  • a terminal apparatus receives data in a format defined in the communication system from a base station apparatus in the communication system, and Is a communication unit that receives data in a format specified for broadcasting in another broadcasting system, and for broadcasting.
  • a playback unit for playing back data in a prescribed format.
  • the data received from the base station device in the communication unit includes data in the format specified for broadcasting, and the playback unit is specified for broadcasting from the data received from the base station device in the communication unit. Extract the data in the format and play the extracted data.
  • a base station apparatus in a communication system includes an access failure in a WLAN (Wi er es s loc al ar e a ner wor k) system.
  • the “format defined in the communication system” includes, for example, the data format of the physical layer standardized by IEE E802.11.
  • the “format specified for broadcasting” includes, for example, the format of the TS bucket specified as MP EG—2 IS (Mov ng Pi ct pe r ter p ro p — 2 T r a n s p rot t STR am).
  • data including content in a format defined for broadcasting is distributed from the distribution-side base station device, and the reproduction-side terminal device uses the received data for broadcasting. Since the data in the format specified in the above is extracted and the extracted data is played back, the terminal device can easily acquire the content.
  • the data received from the broadcast system in the communication unit includes a list indicating programs that can be received from the base station apparatus, and the communication unit selects one of the programs shown in the list.
  • the distribution of the program may be requested from the base station apparatus, and data including the requested program may be received from the base station apparatus.
  • the content desired by the user can be easily acquired by requesting the base station device to distribute one of the one or more programs indicated in the identification information received from the broadcast system. .
  • the communication unit is triggered by a request for data to a cellular communication system different from the communication system via a cellular communication path different from the path between the terminal device and the communication system.
  • a means for requesting a charging process for the data a means for receiving information indicating a result of the charging process from the cellular communication system, and the received information indicating that the charging process has been completed.
  • Means for receiving the data from the base station apparatus may be included.
  • the billing process can be realized easily by executing the billing process with an existing billing system different from the communication system to which the data is distributed.
  • the communication unit When the information received from the cellular communication system via the cellular communication path indicates that the accounting process has been completed, the communication unit performs data reproduction from the base station device. You may receive the information necessary for.
  • the information necessary to execute data reproduction includes key information for decrypting data. In this case, the data can be safely reproduced by separately acquiring the information necessary for executing the data reproduction.
  • the broadcasting system includes a data distribution device that distributes distribution data including data in a format defined for broadcasting to a base station device via a communication network, and the communication unit receives from the base station device.
  • the data may include distribution data distributed from the data distribution apparatus to the base station apparatus.
  • the communication network includes a wired communication network. In this case, the terminal device can easily acquire data including data in a format defined for broadcasting via the base station device.
  • Another aspect of the present invention is also a terminal device.
  • This device plays a list of broadcast programs broadcast from a broadcast station and broadcast programs, displays a display section, and inputs a selection of a desired broadcast program from a list displayed together with the broadcast program on the display section.
  • an operation unit The display unit requests the base station device to distribute the distribution program selected by the operation unit, and is a data in a format specified for communication and is specified for broadcasting. After receiving the data including the distribution program of the specified format, the distribution program of the format specified for broadcasting is extracted from the received data, and the extracted distribution program is displayed.
  • the terminal device can display the broadcast program acquired from the broadcast station without causing the user to be aware of the connection destination, and can display the distribution program acquired from the communication system.
  • Yet another embodiment of the present invention is a communication method.
  • This method is a broadcasting system Therefore, in the broadcasting system, a step of receiving data including a program of a format specified for broadcasting, a step of reproducing a program of a format specified for broadcasting, and a communication system different from the broadcasting system are used. From the base station apparatus, the data including a program in a format that can be played back in the step of playing back, and receiving the data in the format specified in the communication system, and the data received from the base station apparatus Extracting a program of a format prescribed for broadcasting, and playing the extracted program.
  • Yet another embodiment of the present invention is a communication system.
  • This communication system includes a broadcast station that broadcasts data specified for broadcasting, and a terminal that reproduces data specified for broadcasting, including a list of broadcast programs and broadcast programs. Data specified for communication for the requested delivery program for the delivery request from the terminal device for the delivery program and any of the delivery programs shown in the list And a base station device distributed to the terminal device.
  • the terminal device executes a process of extracting a distribution program in a format specified for broadcasting on the data distributed from the base station device, and displays the extracted program.
  • FIG. 1 is a diagram showing a configuration example of a communication system according to a first embodiment of the present invention.
  • FIG. 2 is a diagram showing a configuration example of the broadcasting station in FIG.
  • FIGS. 3A to 3D are diagrams showing examples of content formats.
  • FIG. 4 is a diagram illustrating a configuration example of the terminal device in FIG. 1.
  • FIG. 5 is a diagram illustrating a configuration example of a reproduction unit in FIG. 6 is a diagram showing a display example in the output unit of FIG.
  • FIG. 7 is a diagram showing a configuration example of a charge management device in FIG. 1.
  • FIG. 8 is a sequence diagram showing an operation example of the communication system in FIG.
  • FIG. 9 is a flowchart showing an operation example of the terminal device of FIG. 1.
  • FIG. 10 is a flowchart showing an operation example of the broadcasting station of FIG.
  • FIG. 11 is a flowchart showing an operation example of the charge management apparatus of FIG. 1.
  • FIG. 12 is a diagram showing a configuration of a broadcasting system according to Embodiment 2 of the present invention.
  • FIG. 13 is a diagram showing a configuration of the relay device of FIG.
  • Figs. 14 (a)-(b) show the content formats processed in the relay device of Fig. 13.
  • FIG. 15 is a diagram showing a table of program information stored in the program information storage unit of FIG.
  • FIG. 16 is a diagram showing a configuration of the terminal device of FIG.
  • FIG. 17 is a flowchart showing a relay procedure by the relay device of FIG.
  • FIG. 18 is a flowchart showing the procedure for distributing advertisements by the relay device in FIG.
  • FIG. 19 is a flowchart showing a reception procedure by the terminal device of FIG.
  • FIG. 20 is a flowchart showing a procedure for delivering an emergency alert by a relay device according to a modification of the second embodiment of the present invention.
  • FIG. 21 is a flowchart showing an advertisement distribution procedure in a TS modification unit according to another modification of the second embodiment of the present invention.
  • 1 0 broadcast station 30 terminal device, 50 network, 60 WL AN base station device, 70 billing management device, 80 cellular base station device, 1 00 distribution system, 1 1 0 TS packet, 1 20 time stamp, 1 22 Header information, 1 30 Program display field, 1 40 Additional information display field, 1 42 Power 1 Sol, 200 Recording format, 21 0 Broadcast format, 220 Communication format, 1 01 0 Terminal Equipment, 1 0 1 2 Broadcast equipment, 1 0 1 4 Relay equipment, 1 0 1 6 Building, 1 020 Broadcast antenna, 1 022 Broadcast processing section, 1 024 TS modification section, 1 026 Content storage section, 1 028 Wireless LAN Processing section,
  • the communication system includes a broadcast station and a terminal device. Broadcast stations broadcast programs.
  • the terminal device acquires a program broadcast by the broadcasting station.
  • the terminal device may be, for example, a mobile phone or a PDA (Per s o n a l D i git a l A s s i s t a n t n o n.
  • a broadcasting station creates content and accumulates the created content.
  • the content includes not only video but also video and audio, music, or data in which character information is superimposed, and data of only audio, music, or text information.
  • contents are unpublished videos and music that are not subject to broadcasting. Etc. are also included.
  • the user may desire to view unpublished video or music that is not broadcast.
  • an unreleased video about a movie is a making video that records the movie's completion. Therefore, it is desirable to distribute contents such as unreleased videos individually according to the user's wishes.
  • the communication system different from the broadcast system includes, for example, a communication system using WL AN.
  • the broadcast station exists in the vicinity of the terminal device via the wired network.
  • AP Access Point
  • broadcast content content distributed using a broadcast system
  • communication content content distributed using a communication system different from the broadcast system
  • Broadcast contents are broadcasted in a broadcast system in a predetermined format for broadcasting (hereinafter referred to as H.264, MPEG, etc.), for example, a predetermined moving picture coding system and audio coding system (hereinafter referred to as “H.264”). This is often referred to as “broadcast format.”).
  • H.264 a predetermined format for broadcasting
  • MPEG MPEG
  • This is often referred to as “broadcast format.”.
  • the terminal device Even if the terminal device has a function of receiving broadcast radio waves and acquiring broadcast content, and a function of playing back the acquired broadcast content, the format used for distribution by the communication system In many cases, it does not have a playback function that can play back any content. As a result, even if communication content configured in the format used for distribution by the communication system is distributed by the WLAN, it cannot be reproduced by the existing reproduction function, so the code used to reproduce the format used in the distribution by the communication system is reproduced. This will be necessary. In this case, problems such as increased costs and increased power consumption may occur.
  • the format of the communication content input to the playback unit provided in the terminal device is the same as the format of the broadcast content stored in the broadcast station.
  • communication content configured in the broadcast format is included in the signal in the format specified for communication.
  • the terminal device demodulates the received signal and extracts the communication content.
  • the extracted communication content is configured in a broadcast format and can be played back by a playback unit capable of playing back the broadcast format.
  • it is possible to view unpublished content or easily view the content that the viewer missed when it was broadcast.
  • there is a broadcasting station Of the contents to be viewed it becomes possible to easily view the content you want to see.
  • FIG. 1 shows a configuration example of a distribution system 100 according to Embodiment 1 of the present invention.
  • the distribution system 10 0 includes a broadcast station 10, a terminal device 30, a network 50, a WLAN base station device 60, a charging management device 70, and a cellular base station device 80.
  • the terminal device 30 performs communication with the W L AN base station device 60 according to the W L AN method.
  • the terminal device 30 performs cellular communication with the cellular base station device 80.
  • only one terminal device 30 is shown in FIG. 1, but a plurality of terminal devices 30 may exist.
  • Broadcasting station 10 broadcasts broadcast content.
  • Broadcast content includes a list of distributable communication content.
  • the terminal device 30 receives the broadcast content that has been broadcast.
  • the terminal device 30 acquires a list included in the broadcast content.
  • the terminal device 30 requests the broadcast station 10 to distribute the communication content via the WLAN base station device 60.
  • the terminal device 30 when the requested content is charged, the terminal device 30 performs billing processing to the billing management device 70 via the cellular base station device 80 before the content distribution request. (Hereinafter referred to as “billing processing request”).
  • billing processing request In general, if the content is charged, the user must pay the broadcast station.
  • broadcasting stations need to build a new billing processing system for delivering paid communication content, which is undesirable from a cost standpoint. Therefore, in the present embodiment, by using the existing charging system for charging the terminal device for the charging process for the distribution of the paid communication content, the cost required for the charging process is increased. Suppress
  • Billing management device 70 performs billing processing with terminal device 30 via cellular base station device 80. When there is a charge processing request from the terminal device 30 The billing management device 70 performs billing processing for charges for communication content. After the charging process is completed, the charging management apparatus 70 reports the result of the charging process including “charging process completed” to the terminal apparatus 30 via the cellular base station apparatus 80.
  • the billing management device 70 may inquire of the terminal device 30 (user) via the cellular base station device 80 as to whether or not to agree to billing. In this case, the terminal device 30 (user) responds to the inquiry from the charging management device 70 as to whether or not to agree to the charging via the cellular base station device 80. If there is a reply, the charging management device 70 reports the result of the charging process including “charging completed” to the terminal device 30 via the network 50.
  • Cellular base station apparatus 80 performs cellular communication with terminal apparatus 30.
  • the cellular base station device 80 relays communication related to the charging process between the terminal device 30 and the charging management device 70 to each other.
  • the cellular communication includes wireless communication using, for example, a CDMA (C o d e i s i o n M u l t i p l e A c c e s s) system or a T D M A (T i m e i v i s i o n M u l t i p l e ac c s ss) system.
  • CDMA CDMA
  • T D M A T i m e i v i s i o n M u l t i p l e ac c s ss
  • the terminal device 30 After receiving the report that "billing processing is completed" from the billing management device 70 via the cellular base station device 80, the terminal device 30 distributes content according to the report. Request to 0.
  • the WLAN base station device 60 transmits a distribution request from the terminal device 30 to the broadcast station 10 via the network 50.
  • the communication via the WL AN base station apparatus 60 uses the W L AN system.
  • the broadcast station 10 distributes the requested content to the terminal device 30 via the network 50 and the WLAN base station device 60. Specifically, the broadcast station 10 converts the content composed of broadcast formats into a signal in a format specified for communication, and converts the converted content via the network 50 to a WLAN base. Transmit to station device 60. Base station for WL AN The device 60 transmits the received content to the terminal device 30.
  • the broadcast station 10 may transmit key information for reproducing the requested content, such as an encryption key and a password, to the terminal device 30. The key information may be transmitted prior to the content distribution when the content request is received from the terminal device 30, and may be transmitted at the same time as the content or after the content is distributed. Also good.
  • FIG. 2 is a diagram illustrating a configuration example of the broadcast station 10 in FIG.
  • the broadcast station 10 includes a distribution control unit 12, a broadcast content distribution unit 14, a content storage unit 16, a content request reception unit 18, a format conversion unit 2 2, and a communication content distribution unit 2 4. And. These are connected by bus 26, respectively.
  • the distribution control unit 12 is connected via the bus 26 to the broadcast content distribution unit 14, the content storage unit 16, the content request reception unit 18, the format conversion unit 22, and the communication content. Controls the distribution unit 2 4.
  • the broadcast content distribution unit 14 broadcasts the content stored in the content storage unit 16 as broadcast content. This broadcasting is also called one-segment broadcasting, which is performed using one segment among a plurality of segments used for terrestrial digital broadcasting, for example.
  • the broadcast content includes a program to be broadcast and a list of communication contents that can be distributed.
  • the list contains information about the broadcast program and other information.
  • the information on the program includes information on the music included in the drama and information on the CM (Commercia IM essage) program of the drama provider.
  • Other information refers to programs that are not directly related to the program to be broadcast. For example, weather forecasts and election bulletins.
  • Information on these programs or other information (hereinafter referred to as “additional information”) is stored in a broadcast format.
  • the additional information includes identification information indicating information about the program and other information.
  • the list of communication contents that can be distributed is BML (B road cast Marqueup Language) and transmitted as a data broadcast.
  • the content request reception unit 18 receives a request signal indicating a communication content distribution request transmitted from each terminal device 30 (not shown), and notifies the distribution control unit 12 of the request signal.
  • the distribution control unit 12 executes a process of distributing the requested communication content. Specifically, the distribution control unit 12 reads the content related to the requested communication content from the content stored in the content storage unit 16. Since the read content is configured in the broadcast format, the distribution control unit 12 sends the format of the read content to the format conversion unit 22 in the format specified for communication. Convert to signal.
  • the format conversion unit 22 converts the content read from the content storage unit 16 into a format defined for communication.
  • the communication content distribution unit 24 distributes the communication content converted into a signal in a format defined for communication to the terminal device 30 via the network 50 and the base station device 60 for WLAN.
  • TS packets are a characteristic stream of MP EG 2 and are standardized for broadcasting.
  • the TS packet length is specified to be small (188 bytes) so that it can be easily adapted to broadcasting, etc., and its length is specified as a fixed length.
  • FIG. 1 (a) to (d) show examples of content formats.
  • Figure 3 (a) shows the recording format 200.
  • the format of the content stored in the content storage unit 16 is a recording format 200.
  • the recording format 200 includes a first TS bucket 1 1 0 a represented by a TS bucket 110 and a third TS bucket 1 1 0 c and a first time stamp 1 20 a represented by a time stamp 120. ⁇ 3rd time Stamp 1 20 c is included.
  • FIG. 3B shows an example of the broadcast format 210.
  • the format conversion unit 22 waits for the time stamp 120 included in the data of the recording format 200 held by the content storage unit 16 to match its own clock counter, and converts it to the broadcast format 210. To do. At this time, the clock frequency of the format conversion unit 22 may be 27 MHz, for example.
  • the broadcast format 210 includes a first TS bucket 1100a to a third TS bucket 110c represented by the TS bucket 110.
  • FIG. 3 (c) shows an example of the communication format 220.
  • the communication format 220 includes first header information 1222 to third header information 1222c represented by header information 122 and a TS packet 110.
  • This is a broadcast format 210 converted to a format that can be distributed and received in the communication system.
  • the format conversion unit 22 generates an RTP (R e a -t i T e T r ns p P r t p o t o c o l) packet from each T S bucket 110 included in the broadcast format 210. After that, the generated RTP / packet force, etc. UDP (UserDatagramProtocoI) bucket is generated, and UDP packet force, Ip (Int ernetProtocoI) / ket is generated.
  • the header information 122 includes an RTP packet header, a UDP packet header, and an IP packet header.
  • the content in the recording format held by the content storage unit 16 can be distributed by the communication system.
  • one TS packet becomes one RTP packet, but multiple TS buckets may be configured as one RTP packet, and the same extension can be considered for packetization of other layers. It is done.
  • the WLAN base station device 60 performs communication with the terminal device 30 using the WLAN method. Specifically, the distribution request transmitted from the terminal device 30 is received. In addition, the WLAN base station device 60 transmits the received distribution request via the network 50. Also, the WLAN base station device 60 receives communication content from the broadcast station 10 via the network 50. Thereafter, the WLAN base station device 60 transmits the received communication content to the terminal device 30. Further, when key information related to communication content to be transmitted is transmitted from the broadcast station 10, the key information is also transmitted to the terminal device 30.
  • FIG. 4 is a diagram illustrating a configuration example of the terminal device 30 of FIG.
  • the terminal device 30 includes a broadcast content reception unit 32, a reproduction unit 34, an output unit 36, a reception unit 38, a content request unit 40, a mopile communication unit 42, a communication content reception unit 46, and a format conversion. Part 48 and switching part 28.
  • Broadcast content receiving unit 32 includes an antenna and a one-segment tuner.
  • the antenna receives a broadcast wave including broadcast content broadcast by the broadcast station 10 and outputs it to the one-segment tuner.
  • the one-segment tuner receives input from the antenna and performs reception processing such as frequency conversion processing, A / D (Analog / Digital I) conversion processing, demodulation processing, and error correction decoding processing on broadcast waves. .
  • the one-segment tuner outputs a signal including broadcast content that has undergone reception processing to the switching unit 28.
  • the “signal including broadcast content” output to the switching unit 28 includes a TS packet.
  • the switching unit 28 selects one of the signals output from the broadcast content receiving unit 32 or the format converting unit 48 described later, and outputs the selected signal to the reproducing unit 34.
  • the reproduction unit 34 reproduces the communication content output from the switching unit 28 and causes the output unit 36 to display the communication content.
  • FIG. 5 is a diagram illustrating a configuration example of the reproducing unit 34 in FIG.
  • the playback unit 34 A mux unit 90, an H 264 decoder 92, an AAC (Advanced Audio Recording) decoder 94, and a data broadcasting browser 96 are included.
  • D em u X part 90 is the PID (Packet included in the TS packet).
  • the D em u x part 90 is represented by S I / P S I (S e r v i c e I n
  • the TS packets output from 28 are selected and output to the corresponding decoder or browser.
  • the DemuX unit 90 outputs the TS packet to the H.264 decoder 92.
  • the Demux unit 90 outputs the TS packet to the AAC decoder 94.
  • the D em u x unit 90 receives the DSM—CC (D i g i a t I S to r a g e
  • M edeia—Comma ndand Control) Takes out BM L files transmitted in the ⁇ format and GIF (Graphic Interchange F or mat) image fizzle that is a component of them Output to broadcast browser 96.
  • GIF Graphic Interchange F or mat
  • the H 264 decoder 92 removes the header of the TS bucket ⁇ ⁇ related to the video, concatenates the pay slots, and generates a P ES (P a c e te ze d e lm e nt e r ry STR e am) bucket. In addition, the H 264 decoder 92 removes the header of the P E S packet and concatenates the payloads to generate ES (E l em e n t a r y St e am). Further, the H.264 coder 92 decodes the generated ES and outputs an uncompressed video signal to the output unit 36.
  • the AAC decoder 94 performs the same operation as the H 264 decoder 92 on the TS packet including the audio, and sends the decoded audio data to the output unit 36. Output.
  • the data broadcasting browser 96 interprets the input BML document, arranges character strings and GIF format image files according to the instructions of the BML document, creates an output screen, and outputs it to the output unit 36. .
  • the BML document includes the above-mentioned additional information and billing information.
  • BML documents include not only static expressions but also dynamic processing written in a script language called ECMAS c r i p t, and data broadcasting browsers interpret and execute ECMAS c r i p t.
  • the ECMAS cript function described in the BML document is a function that prompts transition to broadcast content, and the name of the content is described in order, and the function that is executed by specifying each function. It is. This function calls another function that prompts the transition to the communication content of WL A N, which is a different transition destination.
  • the data broadcasting browser can also output audio, but the explanation is omitted here.
  • the output unit 36 includes an audio output unit and a display unit (not shown).
  • the audio output unit is a speaker or the like and outputs audio.
  • the display unit uses the OS D (On Screen Display) function to synthesize the video output by the H.264 decoder and the screen output by the data broadcasting browser, and display the screen on the display. indicate.
  • OS D On Screen Display
  • the output unit 36 has an E CMA Script function that prompts a transition to WL AN communication, for example, "X_DPA_sart E xAV ()"
  • E CMA Script function that prompts a transition to WL AN communication
  • additional information including a list of contents is displayed.
  • the additional information may be displayed together with the program, or the additional information may be displayed instead of displaying the program.
  • FIG. 6 is a diagram showing a display example in the output unit 36 of FIG.
  • the display example shows an example of displaying the program and additional information on one screen.
  • the display example is the program display field 1 30 And additional information display field 1 4 0.
  • the program display field 1 3 0 indicates a place where the program restored in the H. 2 6 4 decoder 9 2 of the reproduction unit 3 4 is displayed.
  • the additional information display field 140 shows the location where the additional information restored in the data broadcast browser 96 of the playback unit 34 is displayed.
  • the additional information display field 14 a list of communication contents that can be distributed is displayed.
  • FIG. 6 is a diagram showing a display example in the output unit 36 of FIG.
  • the display example shows an example of displaying the program and additional information on one screen.
  • the display example is the program display field 1 30 And additional information display field 1 4 0.
  • the program display field 1 3 0 indicates a place where the program restored in the H. 2 6 4 decoder 9 2 of the reproduction unit 3 4 is displayed.
  • the first communication content information 1 4 4 a “NG collection”, the second communication content information 1 4 4 b “theme song“ XXXX ””, and the third communication content information 1 4 4 “Weather forecast” which is c, and cursor 1 4 2 for selecting one of them are displayed.
  • the reception unit 38 is an interface for receiving instructions from the user.
  • the instruction from the user includes the display instruction for the output unit 36 described above, the instruction for selecting the communication content displayed in the additional information display field 140 in FIG. 6, the instruction regarding the billing process described later, and the like.
  • the selection of the communication content is instructed by the user moving the cursor 1 4 2 in FIG. 6 and selecting the communication content information 1 4 4 that requires distribution.
  • the reception unit 38 notifies the content requesting unit 40 of information regarding the selected communication content.
  • the content request unit 40 requests the broadcast station 10 to distribute the content desired by the user in accordance with the notified information regarding the communication content. At that time, if the requested content is charged, the mobile communication unit 42 is requested to send a billing processing request. After that, when the notification that “the billing process is completed” is acquired from the mopile communication unit 42, the content request is sent to the broadcasting station 10. If a notification that “the billing process is incomplete” is obtained from the mopile communication unit 42, no content request is made. If the content is free, the content request is made without requesting the billing process.
  • the mopile communication unit 42 performs cellular communication with the charge management device 70 via the cellular base station device 80. Based on the request from the content requesting unit 40, the mopile communication unit 4 2 performs accounting processing on the accounting management device 70. Send a request. Further, the mopile communication unit 42 receives the result of the charging process from the charge management device 70 and sends it to the content request unit 40.
  • the communication content receiving unit 46 acquires the communication content distributed from the broadcast station 10 via the W L A N base station device 60. In addition, the communication content receiving unit 46 acquires key information related to the communication content received by the communication content receiving unit 46. In addition, the communication content receiving unit 46 performs frequency conversion processing, A / D conversion processing, various demodulation processing, error correction decoding processing, and decoding processing using key information for the received communication content. IP packet is output.
  • the format of the IP bucket to be acquired is, for example, the communication format 2 20 shown in FIG. 3 (c).
  • the format conversion unit 48 converts the communication content of the communication format acquired by the communication content reception unit 46 into a format that can be played back by the playback unit 34, ie, a broadcast format.
  • the conversion in the format conversion unit 48 executes processing corresponding to the conversion in the broadcast station 10 described above. More specifically, the format conversion unit 48 sequentially decomposes the acquired IP packet to generate a desired TS packet. When generating a TS packet, it may have a function of stably outputting the TS bucket by executing buffering processing or the like.
  • the generated TS packet is output to the switching unit 28 described above.
  • the format conversion unit 48 receives the TS bucket from each IP bucket ⁇ configured with the communication format 2 20. 1 1 0 can be extracted and arranged.
  • the sorting process is included in each bucket so that the broadcast format 2 1 0 shown in Fig. 3 (d) is obtained using the identification information of the TS packet included in the communication format 2 2 0.
  • the converted broadcast format 210 includes a plurality of TS buckets 110 and has the same format as the broadcast format 210 shown in FIG. 3 (b).
  • FIG. 2 is a diagram illustrating a configuration example of a charging management apparatus 70 in FIG.
  • the charge management device 70 includes a charge information communication unit 72 and a charge control unit 74.
  • Billing information communication unit 72 receives a billing processing request from terminal device 30 (not shown) via cellular base station device 80 and notifies billing control unit 74.
  • This billing process request includes information indicating the terminal device 30 that requested the communication content, information indicating the communication content, and information indicating the charge of the communication content.
  • the charging control unit 74 performs charging processing in response to a charging processing request. For example, the billing process may be billed for a telephone number indicating the terminal device 30.
  • the charging control unit 74 causes the charging information communication unit 72 to transmit the result of the charging process to the terminal device 30.
  • charging information communication unit 72 transmits the result of the charging process to terminal device 30 (not shown) via cellular base station device 80 according to the instruction from charging control unit 74.
  • the result of the charging process may include information indicating communication content and information indicating a fee for distributing communication content.
  • the result of the charging process may include “the charging process is completed” or “the charging process is not completed”. For example, if the accounting process does not complete normally within a specified time due to the deterioration of the wireless environment between the accounting management device 70 and the terminal device 30, the message “Incomplete accounting process” is included. It is done.
  • FIG. 8 is a sequence diagram showing an operation example of the distribution system 100 in FIG. First.
  • the broadcast station 10 broadcasts broadcast content (S 10).
  • Terminal device 30 The broadcast content broadcast is received, and the program and additional information are reproduced and displayed (S14).
  • the terminal device 30 charges the charging management device 70 via the cellular base station device 80 for charging the requested communication content. (S 1 9, S 20).
  • the charging management device 70 receives the charging processing request transmitted from the terminal device 30 (S 22). In response to the charging process request from the terminal device 30, the charging management apparatus 70 executes the charging process (S34). Further, the charge management device 70 returns the result of the charge processing request to the terminal device 30 via the cellular base station device 80 (S 35, S 36).
  • the terminal device 30 Upon receiving the response from the charge management device 70, the terminal device 30 requests the broadcast station 10 to distribute communication content via the WLAN base station device 60 (S38, S40). .
  • the broadcasting station 10 converts the format of the content to be distributed into a communication format, and generates communication content (S42). After that, the broadcast station 10 distributes the generated communication content to the terminal device 30 via the WLAN base station device 60 (S 44, S 46).
  • the terminal device 30 receives the distributed communication content, and converts the format of the received communication content into a broadcast format that can be played back by the playback unit 34 (S48). In addition, the terminal device 30 plays back and displays the converted communication content (S49).
  • FIG. 9 is a flowchart showing an operation example of the terminal device 30 of FIG. This flowchart may be started when the reception of the broadcast content broadcast is started.
  • the terminal device 30 displays a program included in the received broadcast content and additional information (S50).
  • the terminal device 30 requests the charging management device 70 for charging processing (S54).
  • the terminal device 30 receives the result of the charge processing request from the charge management device 70 (S 56).
  • the terminal device 30 requests the broadcast station 10 to distribute the communication content desired by the user (S 58).
  • the terminal device 30 receives the communication content transmitted from the broadcast station 10 via the WLAN base station device 60 (S 64). Furthermore, the terminal device 30 converts the format of the received communication content into a broadcast format that can be played back by the playback unit 34 (S 66). In addition, the terminal device 30 plays back and displays the converted communication content (S68). Thereafter, it is determined whether or not an instruction to end content viewing has been given (S 72). If not instructed (N in S72), the process proceeds to S50. On the other hand, if instructed ( ⁇ of 372), the process is terminated.
  • FIG. 10 is a flowchart showing an operation example of the broadcast station 10 of FIG.
  • the broadcast station 10 broadcasts broadcast content including a program and additional information (S 100). Broadcast content will continue until the content distribution ends.
  • the broadcast station 10 converts the format of the content to be distributed into the communication format ⁇ and generates the communication content to be distributed. (S 1 1 0).
  • the broadcast station 10 distributes the generated communication content to the terminal device 30 via the WLAN base station device 60 (S 1 1 2). After that, it is determined whether or not to end the distribution of the content (S 1 1 4).
  • the processing ends at Y).
  • FIG. 11 is a flowchart showing an operation example of the charge management apparatus 70 of FIG.
  • charging management apparatus 70 receives a charging processing request from terminal apparatus 30 via cellular base station apparatus 80 (S 120).
  • the charging management device 70 executes charging processing in accordance with the charging processing request (S 1 30).
  • the charging management device 70 sends the charging processing request to the terminal device 30 that transmitted the charging processing request.
  • the result of the accounting process is notified (S 1 3 2).
  • Embodiment 1 of the present invention on the delivery side, data including communication content in a format defined for broadcasting that can be played back on the playback side is transmitted via a communication system different from the broadcast system.
  • the terminal device 30 can simplify communication contents by extracting data in the format specified for broadcasting from the received data on the playback side and playing the extracted data. Can be obtained.
  • the terminal device 30 can display the broadcast content program acquired from the broadcast station 10 without making the user aware of the connection destination, and can display the communication content program acquired via the communication system. it can.
  • the distribution system 10 0 has been described as including the charging management device 70.
  • the distribution system 100 does not include the charging management device 70. It may be.
  • the broadcast station 10 only needs to be equipped with a function for executing charge processing for charged communication content. Even in such an aspect, the terminal device 30 can easily acquire the content stored in the broadcast station 10.
  • the broadcast station 10 includes both the broadcast content distribution unit and the communication content distribution unit and is connected by the same bus. However, these may exist separately. It may be connected with something like a network, not like a bus.
  • header information 1 2 2 is added to each IP packet, but this is not restrictive.
  • a plurality of IP packets are assumed to be a unit. Header information 1 2 2 may be added.
  • the IP packet The packet may be mounted on the communication format 2 0 0 b. Even in these cases, it goes without saying that the conversion process in the terminal device 30 can obtain the same effect as described above by executing the reverse conversion process corresponding to the conversion process.
  • the charging process has been described as the terminal device 30 requests the charging management apparatus 70 for a charging process request prior to the distribution request.
  • the terminal device 30 may indirectly request a charge processing request from the broadcast station 10. That is, when a request for a billing process is requested from the terminal device 30 and the broadcasting station 10, the broadcasting station 10 transfers the request to the billing management device 70.
  • the accounting processing is completed in the accounting management device 70, the result is sent to the broadcasting station 10, and the communication content is delivered from the broadcasting station 10 to the terminal device 30.
  • the load on the terminal device 30 can be reduced, and resources in the mopile communication network can be made more efficient.
  • the terminal device 30 does not need to be provided with a device related to billing, the cost can be reduced.
  • the terminal device 30 when the terminal device 30 requests communication content, it can be accessed W
  • Another communication means may be a wireless communication means for cellular.
  • it may be further determined whether or not the user desires another communication means as a determination condition. It is also possible to prepare multiple transition destinations together with bit rate information and select the best image quality from them, or select the one with the least amount of communication from the viewpoint of communication costs. Good.
  • Embodiment 1 is an exemplification, and various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. It is where
  • Embodiment 2 relates to a content relay technology and a content reception technology, and particularly to a content relay device and a content reception device that transmit content.
  • gap filler As a system that complements places where broadcast waves do not reach, such as the shade of buildings and underground malls. This is a relay base station that redistributes received broadcast waves to places where broadcast waves do not reach. The gap filler is also transmitting radio waves, and the gap filler is also required to be a broadcasting facility.
  • wireless LAN Local Area Network
  • services that provide connections to communication networks such as wireless LANs are increasing in the city. Opportunities to use and connect to wireless LAN will increase in the future. Therefore, as in the background art, when content is distributed via a communication network, the content can also be viewed on a mobile phone terminal in a place where broadcast waves cannot be received.
  • the wireless LAN base station device simply relays information, and the wireless LAN base station device The configuration is simplified.
  • broadcast waves may be received in the vicinity of the area where the wireless LAN base station device is installed. In this case, the same content will be distributed by both the broadcast wave and the communication line. Not efficient.
  • Embodiment 2 according to the present invention has been made in view of such a situation, and an object thereof is to provide a content relay technique and a content reception technique for efficiently transferring content.
  • a content relay apparatus includes a broadcast wave receiving unit that receives content via a broadcast wave, and a content received by the broadcast wave receiving unit.
  • the content conversion unit that converts to a format suitable for distribution via the communication network while maintaining the format when received via the broadcast wave, and the content converted by the content conversion unit are connected to the communication network.
  • a content distribution unit that distributes via the network.
  • Content corresponds to video data, audio data, information data included in a program, or any combination thereof.
  • the “content” may be video data itself, or may be a video data etc. that has been encoded. According to this aspect, the content contained in the received broadcast wave is transmitted through the communication network, and the content is transferred while using the broadcast wave. Therefore, the content can be transferred efficiently.
  • the content format distributed from the content distribution unit is the broadcast wave reception unit.
  • the content conversion unit may perform conversion without executing decoding and encoding on the content itself. In this case, when the conversion is performed, since the decoding and encoding for the content itself are not executed, the processing can be simplified.
  • a content storage unit that holds content different from the content received by the broadcast wave receiving unit, and the start of a time period in which content replacement is temporarily permitted included in the content received by the broadcast wave receiving unit
  • the content distribution unit further includes a permission information acquisition unit that acquires information about the end, and the content distribution unit stores the content to be distributed when the information indicating the start of the time period permitted for replacement by the permission information acquisition unit is stored in the content
  • the content to be distributed may be switched to the content received from the broadcast wave receiving unit when the information indicating the end of the time period when the replacement is permitted is obtained. In this case, since the content is distributed at the permitted time, the original content can be distributed to the area formed by the content relay device.
  • the emergency alert receiving unit that receives emergency alerts for notifying information such as disasters, and the emergency alerts received by the emergency alert receiving unit contain information about the areas that are subject to emergency alerts.
  • Another aspect of the second embodiment of the present invention is a content receiving device.
  • This device detects a broadcast wave receiving unit that receives content via a broadcast wave, a communication network receiving unit that receives content via a communication network, and a reception sensitivity of the broadcast wave received by the broadcast wave receiving unit.
  • a broadcast wave receiver as a means for receiving content based on the detection results of the receiver sensitivity detector and the reception sensitivity detector.
  • a receiving unit selecting unit for selecting a communication network receiving unit.
  • the means for receiving content is switched according to the reception sensitivity, the content reception probability can be improved.
  • the reception unit selection unit may select the communication network reception unit. In this case, even if the reception sensitivity of the broadcast wave is small, the communication network is used, so the content reception probability can be improved.
  • the reception unit selection unit may select the broadcast wave reception unit when the reception sensitivity detected by the reception sensitivity detection unit is higher than a set level. In this case, if the reception sensitivity of the broadcast wave is high to some extent, the broadcast wave is used, so that the content can be received as usual.
  • the reception unit selection unit has power consumption for reception out of the broadcast wave reception unit and the communication network reception unit. The smaller one may be selected. In this case, since the one with lower power consumption is selected, the power consumption can be reduced.
  • a battery remaining amount detecting unit for detecting the remaining battery amount may be further provided.
  • the receiver selection unit receives the broadcast wave if both the broadcast wave receiver and the communication network receiver are capable of receiving content and the detection result of the remaining battery level detector is greater than the set level. If the detection result of the remaining battery level detection unit is not greater than the set level, select either the broadcast wave reception unit or the communication network reception unit. The one with lower power consumption for reception may be selected. In this case, the selection criteria are changed according to the remaining battery level, so both low power consumption and high quality can be achieved.
  • Still another aspect of the second embodiment according to the present invention is a content relay method.
  • content received via broadcast waves is converted to a format suitable for distribution via a communication network while maintaining the format when received via broadcast waves.
  • Distributed content is distributed via the communication network.
  • Still another aspect of the second embodiment according to the present invention is a content receiving method.
  • the This method is a content reception method for receiving content via broadcast waves or communication networks, and is a means for detecting the reception sensitivity of received broadcast waves and receiving content based on the detection results. Select to receive content via broadcast waves or to receive content via communication network.
  • Embodiment 2 of the present invention relates to a broadcasting system that distributes content via broadcast waves.
  • content can be transferred efficiently.
  • the present invention relates to a gap filler that receives content via broadcast waves and transfers the content received via a communication network.
  • a broadcaster or the like distributes content to the gap filler by broadcast waves, and the gap filler converts the content to a format compatible with wireless LAN distribution, and then via the wireless LAN, Distribute the converted content to mobile phone terminals.
  • converting to a format compatible with wireless LAN distribution corresponds to storing the content in the IP bucket without converting the format of the received content. This reduces the burden on technical standards and licenses required for a normal gap filler and facilitates installation.
  • sophisticated processing such as error correction may be added in the gap filler, such a processing is usually added in the configuration of the present invention.
  • the gap filler by limiting the content distribution area by the gap filler, it is possible to distribute advertisements suitable for the distribution area. For example, the scheduled delivery time of an advertisement inserted in a television broadcast is obtained in advance from a broadcast station, and At the scheduled delivery time, the filter inserts a pre-stored advertisement into the content instead of the advertisement inserted into the received content, and then executes the delivery. At that time, the gap filler stores in advance an advertisement suitable for the distribution area. As a result, efficient delivery of advertisements becomes possible.
  • FIG. 12 shows a configuration of a broadcasting system 110 according to Embodiment 2 of the present invention.
  • the broadcasting system 1 1 0 0 includes a first terminal device 1 0 1 0 a, a second terminal device 1 0 1 0 b, a third terminal device 1 0 1 0 c, a broadcasting device, which are collectively referred to as a terminal device 1 0 1 0 1 0 1 2 and relay device 1 0 1 4 are included.
  • a terminal device 1 0 1 0 1 0 1 2 and relay device 1 0 1 4 are included.
  • three terminal devices 1 0 1 0 from the first terminal device 1 0 1 0 a to the third terminal device 1 0 1 O c are shown, but the present invention is not limited to this.
  • a larger number of terminal devices 1 0 1 0 may be included.
  • the broadcast device 1 0 1 2 is a transmission device for a broadcaster to transmit content. Since the broadcasting device 10 1 2 has a transmission function corresponding to terrestrial digital broadcasting, it divides the content into units of TS packets and continuously transmits the TS packets. Note that the broadcast apparatus 10 12 is only required to be realized by a known technique, and therefore details thereof are omitted here.
  • the radio wave transmitted by the broadcast device 1 0 1 2 and for transmitting content is called a broadcast wave. In other words, the broadcasting device 1 0 1 2 distributes content via broadcast waves.
  • the first terminal device 1 0 1 0 a exists outdoors and receives the broadcast wave from the broadcast device 1 0 1 2. Therefore, the first terminal device 1 0 1 0 a reproduces the content broadcast from the broadcast device 1 0 1 2.
  • the digital terrestrial broadcast received by the first terminal device 1 0 1 0 a is a one-segment broadcast.
  • Such a combination of the broadcasting device 10 12 and the first terminal device 100 1 0 a is a general broadcasting mode of one-segment broadcasting.
  • the second terminal device 1 0 1 0 b exists in the building 1 0 1 6 and cannot receive broadcast waves from the broadcast device 1 0 1 2. For this reason, the second terminal device 1 0 1 0 b cannot reproduce the content transmitted from the broadcast device 1 0 1 2.
  • This situation is not limited to buildings 1 0 1 6 For example, the same applies to underground shopping malls.
  • the relay device 1 01 4 receives a broadcast wave at one end and transmits a radio signal of a wireless LAN at the other end.
  • the relay device 1 04 receives the content via the broadcast wave and distributes the content via the wireless LAN.
  • the relay device 1104 executes content relaying and corresponds to the gap filler described above.
  • the signal received by the relay device 1 01 4 and the signal transmitted from the relay device 1 01 4 are different. ing.
  • the relay device 1104 performs signal conversion so that the format of the content distributed via the wireless LAN maintains the format of the content received via the broadcast wave. Details will be described later.
  • Third terminal device 1 01 0 c receives the content from relay device 1 014 via the wireless LAN, not the broadcast wave, and plays back the received content.
  • the terminal device 1 100 when the terminal device 1 100 is capable of receiving broadcast waves, it receives content distributed from the broadcast device 1 01 2 via broadcast waves, and is in an environment where broadcast waves cannot be received. Receives content distributed from the relay device 1 01 4 via wireless LAN.
  • the terminal device 1100 has a function corresponding to the mobile phone network, but the description of the function is omitted here for the sake of clarity.
  • FIG. 13 shows the configuration of relay apparatus 1 01 4.
  • the relay device 1 01 4 includes a broadcast antenna 1 020, a broadcast processing unit 1 022, a TS modification unit 1 024, a content storage unit 1 026, a wireless LAN processing unit 1 028, a control unit 1 030, and a wireless LAN antenna 1 044.
  • the broadcast processing unit 1 022 includes a first tuner unit 1 034 a, a second tuner unit 1 034 b, a transcoding unit 1 036, and a first transcoding unit 1 036.
  • the second transcoding unit 1 036 b is included, and the wireless LAN processing unit 1 028 includes an RTP processing unit 1 038, a program information storage unit 1 040, and a wireless LAN communication unit 1 042.
  • Tuner section 1 034 receives broadcast waves distributed by broadcast apparatus 1 102 2 (not shown) via broadcast antenna 1 020.
  • the tuner unit 1 0 34 receives the content via the broadcast wave.
  • the broadcast wave received by the tuner unit 1034 includes a plurality of channels in terrestrial digital broadcasting while being frequency-multiplexed, and each channel is subjected to OFDM modulation. Furthermore, each channel is formed by a series of data units called TS packets. As a result, the content distributed by one channel is divided into multiple TS buckets and distributed.
  • Tuner unit 1034 accepts the received broadcast wave, that is, a plurality of channels, and performs frequency conversion processing, A / D conversion processing, various demodulation processing, and error correction processing, and corresponds to a desired channel. Outputs multiple TS packets (hereinafter referred to as “TS signal”).
  • TS signal corresponds to one-segment or 13-segment broadcasting (hereinafter referred to as “1 3-segment”) depending on the channel.
  • tuner unit 1034 can generally receive one segment without any special measures.
  • the tuner unit 1034 has a TMCC (T r a n sm i s s i o n a n d Mu l t i p l e x i n g Co nf i g u r t i o t o n C o n t r o I) decoding unit, and obtains a demodulation method and the like from the TMCC signal.
  • a first tuner unit 1 034 a and a second tuner unit 1 034 b are provided. If only one channel is received, only the first tuner section 1 034a may be provided, and if three or more channels are simultaneously provided, three or more tuner sections 1 034 may be provided. Good.
  • the transcoding unit 1036 receives the 13-segment TS signal, and executes Demux, decoding, re-encoding, and MuX processing. As a result, the transcode section 1036 outputs a TS signal obtained by converting the screen size, bit rate, and encoding method.
  • the screen and decoder capabilities of current mobile phone terminals are both capable of receiving one segment, but the future screen resolution will improve. It is expected that the coder capability will be improved, and for example, a high-quality videophone function will be implemented. In such a case, according to the function of the transcoding unit 1036, it is possible to provide a higher-quality content that matches the decoder and screen of the high-quality videophone function. Note that when the tuner unit 1 034 outputs a one-segment TS signal, the transcode unit 1 036 may not operate.
  • the content storage unit 1 026 stores content different from the content received by the tuner unit 1 034, for example, a TS signal that records a self-broadcast such as an advertisement, etc., and matches the predetermined timing. Output the saved content.
  • a TS signal that records a self-broadcast such as an advertisement, etc.
  • the TS signal information related to delivery timing, such as information that is described as PCR (Pragram ClocRefrenc) and P, and the number of pictures input to the decoder are superimposed on the macro.
  • internal processing is executed in accordance with the content storage unit 1026 or later-described control unit 1 030 force timing, and the output amount of the previous stage is adjusted based on the free space of the buffer.
  • the output method is selected according to the former time stamp.
  • the tuner unit 1034 or the wireless LAN antenna 1044 receives permission time information (hereinafter referred to as “advertisement time information”) regarding the time during which content replacement is temporarily permitted in the content.
  • TS modifying section 1024 rewrites broadcast station information and time information included in the TS signal.
  • TS modification part 1 024 is displayed as a channel for the TS signal from transcoding part 1 036 or tuner part 1 034 (NIT (N et work Information T able) Network name descriptor) and the part that specifies whether it is digital terrestrial broadcasting (system management descriptor in NIT).
  • the TS modifying unit 1024 modifies the time information portion (JST_time field of TOT (Time Offset)) for the TS signal from the content storage unit 1026. Thereafter, the TS modifying unit 1024 outputs the modified TS signal to the RTP processing unit 1038.
  • TS modifying section 1024 performs band allocation in response to the case where a plurality of tuner sections 1034 are provided or the bit rate is increased or decreased by transcoding section 1036 or the like.
  • the terminal device 110 can share the process of the reception unit with the case where the broadcast is directly received. Do not perform TS modification processing in the relay device 1 04, but add processing such as ignoring these information parts after recognizing that the terminal device 1 0 10 is via a wireless LAN. You can also respond.
  • the Ding processing unit 1038 stores the TS packet in the payout portion of the RTP bucket ⁇ while dividing the TS signal modified by the TS modification unit 1024 into the TS bucket ⁇ .
  • the Ding processing unit 10 038 stores the RTP bucket in the payload portion of the UDP packet and stores the UDP packet in the payload portion of the IP bucket so that the IP packet finally becomes IP. Output the packet.
  • the RTP processing unit 1038 assigns each header appropriately.
  • the RTP processing unit 1 038 is suitable for distributing the content received by the tuner unit 1 034 via the wireless LAN while maintaining the format received via the broadcast wave, that is, the TS bucket. Perform conversion to the specified format, ie IP bucket ⁇ .
  • the RTP processing unit 1038 performs conversion without executing decoding and encoding on the content itself.
  • An example of decryption for the content itself is H.264 decryption or AAC decryption.
  • Figures 14 (a)-(d) show the format of the content processed in the relay device 1014.
  • Figure 14 (a) is received by the broadcast processor 1 022. This is the format of the content that has been transmitted and processed.
  • a plurality of TS buckets from the first TS bucket to the NTS bucket are continuously arranged.
  • a single TS may contain multiple channels (services), but here it is assumed that a single TS contains a single channel.
  • the format of content input to the RTP processing unit 1038 also has the same configuration as that in FIG.
  • the RTP processing unit 1 038 performs conversion from the input format shown in FIG. 14 (a) to the format shown in FIG. 14 (d).
  • a case will be described in which one IP packet is generated from the first TS packet to the fourth TS packet among the plurality of TS buckets in FIG. 14 (a).
  • a time stamp is added to each of the first TS packet to the fourth TS bucket IV.
  • 4 TS buckets with time stamps (from the 1st TS bucket to the 4th TS packet) are combined, and an RTP packet header is added to each combined. To generate RTP packets.
  • the wireless LAN communication unit 1 042 receives the IP packet from the RTP processing unit 1 038 and generates a wireless LAN packet by executing encryption processing, error correction encoding processing, modulation processing, and the like. To do. Further, the wireless LAN communication unit 1 042 transmits a wireless LAN packet from the wireless LAN antenna 1 044 using an appropriate channel or ES S_ID. That is, the wireless LAN communication unit 1042 distributes the content converted by the RTP processing unit 1038 via the wireless LAN.
  • the format of the content distributed from the wireless LAN communication unit 1042 is defined such that the TS packet received by the tuner unit 1034 is stored.
  • Wireless LAN communication unit 1 042 supports advertising time information The content stored in the content storage unit 106 may be distributed during the time.
  • the program information storage unit 1 0 40 holds program information necessary for viewing a program via the wireless LAN.
  • the program information storage unit 1 0 4 0 is connected via the wireless LAN communication unit 1 0 4 2.
  • the stored program information is transmitted to the terminal device 10 0 10.
  • FIG. 15 shows a table of program information stored in the program information storage unit 10 40.
  • a service name column 1 2 0 0, a method column 1 2 0 2, a type column 1 2 0 4, a multicast address column 1 2 0 6, and a wireless L AN identifier column 1 2 0 8 are included.
  • the service name field 1 2 0 0 includes information about the broadcasting station that is the content distribution source.
  • the format column 1 2 0 2 includes information on the broadcast format, for example, “1 segment” or “SD”.
  • the type column 1 2 0 4 indicates the type of relay
  • the multicast address column 1 2 0 6 indicates the multicast address
  • the wireless LAN identifier column 1 2 0 8 indicates the identifier of the wireless L AN.
  • Such program information is information necessary for the terminal device 1 0 1 0 to receive content via the wireless LAN, and the relay device 1 0 1 in response to a request from the terminal device 1 0 1 0. Sent from 4.
  • the control unit 1 0 3 0 controls the operation timing and the like of the entire relay device 1 0 1 4.
  • This configuration can be realized in hardware by a CPU, memory, or other LSI of any computer, and in software, it can be realized by a program having a communication function loaded in the memory.
  • functional blocks that are realized by these linkages are depicted. Therefore, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.
  • FIG. 16 shows the configuration of terminal apparatus 1 0 10.
  • the terminal device 1 0 1 0 is a broadcasting antenna 1 0 5 0, a wireless LAN antenna 1 0 5 2, a broadcast processing unit 1 0 5 4, Includes a wireless LAN processing unit 1 056, a reception sensitivity detection unit 1 058, an input switching unit 1 060, a playback unit 1 062, and a control unit 1 064.
  • the broadcast processing unit 1 054 includes a broadcast wave receiving unit 1 066 and a 1-segment tuner unit 1068.
  • the wireless LAN processing unit 1 056 is a wireless LAN receiving unit 1 070, an RTP processing unit 1 072, and obtains program information.
  • Part 1 074 program information storage part 1 076, content reception setting part 1 07 8, program information request part 1 080, wireless LAN transmission part 1 082, playback part 1 062 is demox part 1 084, A AC Decoder 1 086, audio output unit 1 088, H.264 decoder 1 090, screen display unit 1 092 are included.
  • Broadcast wave receiving unit 1 066 receives content distributed via broadcast wave from broadcast device 1 01 2 (not shown) by broadcast antenna 1 050, and outputs the received content to 1 segment tuner unit 1068 To do.
  • the 1-segment tuner 1068 performs frequency conversion processing, A / D conversion processing, various demodulation processing, and error correction processing on the content from the broadcast wave reception unit 1066, and outputs a TS signal.
  • the wireless LAN receiving unit 1 070 receives content and program information transmitted from a relay device 1104 (not shown) via a communication network, that is, a wireless LAN. Similar to the 1-segment tuner unit 1068, the wireless LAN receiver unit 1070 performs frequency conversion processing, A / D conversion processing, various demodulation processing, and error correction processing, and outputs an IP packet. When the wireless LAN receiving unit 1 070 receives the content, the IP packet is output to the RTP processing unit 1 072, and when the wireless LAN receiving unit 1 070 receives the program information, the IP bucket receives the program information acquiring unit 1 07 Output to 4.
  • the RTP processing unit 1072 sequentially disassembles the IP bucket from the wireless LAN receiving unit 1070, and acquires a desired TS packet. As described above, a UDP packet is stored in the payload portion of the IP bucket IV, and an RTP packet is stored in the payload portion of the UDP packet. Since such an RTP bucket includes a TS bucket, the RTP processing unit 1072 extracts the TS packet from the RTP packet.
  • RTP processing section 1 07 2 also has a function to stably output TS packets by executing buffering and the like.
  • the reception sensitivity detector 1 0 5 8 detects the reception intensity of the signal received by the 1 segment tuner 1 0 6 8. That is, the reception sensitivity detection unit 1 0 58 detects the reception sensitivity of the broadcast wave received by the broadcast wave reception unit 1 0 6 6. Since a known technique may be used for detection of the reception sensitivity, the description is omitted here.
  • the reception sensitivity detector 1 0 5 8 detects that the reception intensity is less than a preset threshold TH_A.
  • the information request unit 1 0 8 0 is requested to request program information from a relay device 1 0 1 4 (not shown), and the input switching unit 1 0 6 0 is input from the 1 segment tuner unit 1 0 6 8 Request to switch to RTP processor 1 0 7 2.
  • the reception sensitivity detection unit 1 0 5 8 instructs the wireless LAN processing unit 1 0 5 6 to be selected when the detected reception sensitivity is lower than the set level.
  • a configuration in which power supply to the broadcast processing unit 10 54 or the wireless LAN processing unit 10 56 is cut off is also conceivable.
  • a configuration is possible in which power saving and stable reception can be realized at the same time by supplying power to both sides depending on reception sensitivity or using only one side. For the sake of simplicity, such a configuration will not be described below.
  • the reception sensitivity detection unit 1 0 5 8 detects that the reception intensity is greater than or equal to the preset threshold TH_B when receiving content via the wireless LAN.
  • the input switching unit 1 0 6 0 is requested to switch the input from the RTP processing unit 1 0 7 2 to the 1 segment tuner unit 1 0 6 8. That is, the reception sensitivity detection unit 105 8 instructs the broadcast processing unit 105 4 to be selected when the detected reception sensitivity is equal to or higher than the set level.
  • the input switching unit 1 0 6 0 is a 1 segment tuner unit 1 0 6 8 and an RTP processing unit 1 0 7 2 as means for receiving content based on a request from the reception sensitivity detection unit 1 0 5 8 Select one of the TS buckets output from.
  • the Demux section 1 084 receives the TS bucket from the input switching section 1 060 and selects the video and audio TS bucket based on the PID (Packet ID).
  • the Demu X unit 1 084 outputs a TS bucket to the A AC decoder 10 086 or the H.264 decoder 1 090 according to the selection result.
  • a packet including control information called SI / PS I (Service Information Pro- gration Special Information) is used.
  • SI / PS I Service Information Pro- gration Special Information
  • data broadcast and caption information may be included, but they are omitted in this embodiment.
  • the H. 264 decoder 1 090 removes the header of the TS packet related to the video, concatenates the pay slots, and generates a PES (Pac k e t e d E I em e N t a ry St e am) bucket. Also, the H.264 decoder 1 090 removes the header of the PES packet and concatenates the payload, thereby obtaining ES (Eleme n tary St am). Further, the H.264 decoder 1 090 decodes the ES and outputs an uncompressed video signal to the screen display unit 1092.
  • AAC decoder 1 086 is an H.264 decoder for audio packets.
  • the screen display unit 1 092 is configured by a liquid crystal screen or the like, and provides a video to the user by displaying the video signal output from the H.264 decoder 1 090.
  • the audio output unit 1 088 includes a speaker or the like, and provides audio to the user by outputting the audio signal output from the AAC decoder 1 086.
  • the program information request unit 1 080 In response to the request from the reception sensitivity detection unit 1 058, the program information request unit 1 080 generates a program information request for requesting program information to a relay device 1 014 (not shown). Request the wireless LAN transmitter 1 082 to send the request.
  • the wireless LAN transmission unit 1082 transmits a program information request to the relay device 11014 according to a request from the program information request unit 1080.
  • Wireless LAN transmitter 1 082 In the order of frequency conversion processing, D / A conversion processing, etc., the processing is executed in the reverse order to the wireless LAN receiving unit 1070.
  • the program information acquisition unit 1 074 acquires the program information received by the wireless LAN reception unit 1070. Also, the program information acquisition unit 1 074 requests the content reception setting unit 1 078 to set the wireless LAN reception unit 1070 according to the acquired program information.
  • the program information storage unit 1076 stores the program information acquired by the program information acquisition unit 10074.
  • the content reception setting unit 1 078 sets the wireless LAN reception unit 1 070 so that the content can be received according to the request from the program information acquisition unit 1 074.
  • the control unit 1 064 controls the operation timing and the like of the entire terminal device 1 100.
  • Fig. 17 is a flow chart showing the relay procedure by relay device 1014.
  • the control unit 1 030 sets the tuner unit 1 034 to a predetermined channel (S 1 0 1 0) and converts the TS signal of the 13-segment broadcast into a quality suitable for the terminal device 1 1 0 0.
  • Set the transcode section 1 036 (S 1 0 1 1).
  • the tuner section 1034 demodulates the received TS signal (S 1 01 2).
  • the tuner section 1 034 can demodulate the 1-segment broadcasting TS signal (hereinafter referred to as “1 3-segment TS”) and the 1-segment broadcasting TS signal (hereinafter referred to as “T S — 1”). However, here we will demodulate the 13-segment TS. After that, the transcoding unit 1036 converts the TS signal to the H.264 format with a resolution of 640 X 480, and at the same time, multiplexes the voice as it is, and the 4Mb ps TS (hereinafter referred to as "TS_2”) Convert to (S 1 01 4).
  • TS_2 4Mb ps TS
  • the TS bucket is NIT (S 1 01 5). If it is NIT (Y of S 1 0 15), the TS modification unit 1 024 is connected to the network. Rewrite the identifier and system management identifier from “00001 1” to “1 1 1 1 1” (S 1 01 8).
  • “00001 1” corresponds to a value indicating digital terrestrial broadcasting
  • “1 1 1 1 1” corresponds to a value indicating wireless LAN. That Post-processing proceeds to S 1 021.
  • the TS bucket is not NIT (N in S1015), it is determined whether the TS packet is a TOT (S1 01 7). If the TS packet is not TOT (N in S 1 017), the process proceeds to S 1 021. On the other hand, in the case of TOT (Y in S 1 017), the TS modification unit 1 024 rewrites the JS T_time field according to the current time stored internally (S 1 020), S 1 021 Proceed to
  • S 1 021 it is determined whether n TS TS buckets that have not been output have been accumulated (S 1 021), and the processing from S 1 01 2 is repeated until it accumulates (N in S 1 021). If n TS packets that have not been output are accumulated (Y in S 1 021), then the processing unit 1 038 adds a header to the RTP packet for the TS packet, and then adds a plurality of TS packets to the payload. Is stored. Further, the document processing unit 1038 adds an UDP header and an IP header to the RTP packet to generate an IP packet (S 1 022), and outputs the IP packet to the wireless LAN communication unit 1042. If streaming is performed in RTP,?
  • the 3 ⁇ 4 processing unit 1038 usually performs adjustment between transmission and reception by RTSP or performs flow control by RTCP, but the description is omitted here.
  • the wireless LAN communication unit 1042 executes modulation processing, D / A conversion processing, and the like (S 1 024), and then performs wireless transmission (S 10 026). Thereafter, it is confirmed whether an instruction to end is given from the control unit 1 030 (S 1 028). If there is an instruction (Y in S 1 028), the process is terminated.
  • tuner section 1034 has received the 13-segment broadcast TS signal, but the same applies to the case of receiving the one-segment broadcast TS signal. However, in this case, the transcoding process is not necessary, so the processes of S 1 01 1 and S 1 01 4 are skipped.
  • FIG. 18 is a flowchart showing a procedure for distributing advertisements by relay device 1104.
  • TS modifying section 1 024 When the transformation unit 1024 starts to receive a program, first, TS-1 and TS-2 are selected (S 1 041). TS modification section 1 024 will continue to select the selected side as an input unless it is selected in the future. Thereafter, a TS packet is obtained from the input (S 1 043). Then, it is confirmed whether the time measured by the built-in clock matches the advertisement broadcast start time included in the advertisement time information acquired in advance (S 10 044). If they match (Y in S 1 044), the TS signal to be processed is switched to TS-C held in the content storage unit (S 1 046). Thereafter, the processing proceeds to S 1 052.
  • FIG. 19 is a flowchart showing a receiving means by the terminal device 110 0.
  • the input switching unit 1600 sets the input to the 1-segment tuner unit 1068 (S1070) and receives the content via the broadcast wave. Thereafter, the input switching unit 1 060 continues to select the selected side as an input unless a new selection is made. Thereafter, when there is an end instruction (Y in S 1 07 1), the process ends. If there is no termination instruction (N in S 1 07 1), the reception sensitivity detection unit 1058 detects whether the reception sensitivity has fallen below a certain value (S 1 072). If not (N in S 1 072), the process returns to S 1 07 1.
  • the wireless LAN receiver 1 070 Establishes a connection with the wireless LAN (S 1 0 7 4). Thereafter, the input switching unit 1 0 60 switches the input from the 1 segment tuner unit 1 0 6 8 to the RTP processing unit 1 0 7 2, and the terminal device 1 0 1 0 10 transmits content via a communication network called a wireless LAN. (S 1 0 7 8). Thereafter, it is confirmed whether an end instruction has been received from the control unit 10 64 (S 10 07 9). If there is an end instruction (Y in S 1 0 79 9), the process ends.
  • the reception sensitivity detector 1 0 5 8 detects whether the reception sensitivity of the broadcast wave is higher than a certain value, and (S 1 0 8 0) As a result, when the reception sensitivity reaches a viewable level (in the case of S 1 0 80), the process returns to S 1 0 70, and the content is received via the broadcast wave. On the other hand, when the reception sensitivity remains low (N in S 1 0 80 0), the process proceeds to S 1 0 79.
  • the relay device 1 0 1 4 receives an emergency broadcast via a broadcast wave.
  • the configuration of the broadcast system 1 1 0 0 in the modified example is the same type as the broadcast system 1 1 0 0 shown in FIG. 12.
  • the relay device 1 0 1 4 according to the modified example is shown in FIG. It is the same type as the relay device 1 0 1 4.
  • the tuner unit 1 0 3 4 receives an emergency warning broadcast for reporting information such as disasters.
  • the TMCCC signal mentioned above includes an emergency warning broadcast activation flag.
  • 1 Seg tuner 1 0 6 8 confirms the presence or absence of emergency alert broadcast based on the received emergency alert broadcast activation flag.
  • the control unit 1 0 30 stores information about the installation area where the relay device 1 0 1 4 is installed.
  • the installation area may be indicated by the latitude and longitude indicating the area, or may be indicated by identification information regarding the area assigned in advance.
  • the emergency alert broadcast received by the broadcast wave receiving unit 106 includes information on the target area that is the target of the emergency alert broadcast.
  • the target area is shown in the same way as the installation area.
  • the controller 1 0 30 determines whether the installation area is the target area by comparing the installation area with the target area.
  • Input switching unit 1 0 6 0 is determined as an emergency warning broadcast target area If it is, the content to be distributed is switched to emergency alert broadcasting.
  • FIG. 20 is a flowchart showing a procedure for delivering an emergency alert by the relay device 1014.
  • the 1-segment tuner 1 068 checks whether or not there is an emergency warning broadcast activation flag in the TMCC signal (S 1 100). If the flag is “1”, that is, if the flag is included (Y of S 1 100), the TS modifying unit 1 0 24 analyzes the TS signal output from the 1-segment tuner unit 1 068. As a result, PMT (Prog am Map T able) is obtained.
  • the control unit 1 030 checks the emergency information descriptor in the PMT and determines whether the installation area is the target area because the target area is described in the emergency information descriptor (S 1 1 02).
  • the repeater 1 01 4 receives the service specified in the emergency information descriptor and sends it to the emergency warning broadcast TS signal from the 1-segment tuner unit 1068.
  • the TS signal output from the TS modification unit 1 024 is switched (S 1 1 04).
  • the flag is “0”, that is, if the flag is not included (S 1 1 00 1 ⁇ 1), or if it is not the target area (S 1 1 02 N), the normal broadcast is Selected (S 1 1 06).
  • the relay device 1104 receives the advertisement time information, holds it in the content storage unit 1026, and instead receives and uses the advertisement start control signal and the advertisement end control signal.
  • the advertisement start control signal and the advertisement end control signal are inserted into the adaptation field of the TS bucket and transmitted.
  • the TS packet has a mechanism that can include additional information called an adaptation field in addition to the header part. Private data can also be inserted here, so private data is inserted here. If the byte is '0', it is an advertisement start control signal, and if it is '1', it is an advertisement end control signal.
  • the adaptation field of the TS packet is used, but it is also possible to transmit it by including it in SI / PS I. In particular, private sections are already defined in DSM-CC, This can be used.
  • the configuration of the broadcasting system 1 100 in this modification is the same type as the broadcasting system 1 100 shown in FIG. 12.
  • the relay apparatus 1 01 4 according to this modification is shown in FIG. It is the same type as the relay device 1 01 4 shown in FIG. TS modification unit 1 024 checks whether private data is included in all TS and switches the content to be distributed.
  • FIG. 21 is a flowchart showing the advertisement distribution procedure in the TS modification unit 1 024.
  • the TS modification unit 1 024 starts to receive the program, it first selects TS-1 and TS-2 (S 1 1 1 0). As a result, the TS-1 and TS-2 sides will continue to be selected as inputs unless selected in the future.
  • TS is obtained from the input (S 1 1 1 2), and it is checked whether there is private data in the adaptation field (S 1 1 1 6). If there is no private data (N of S 1 1 1 6), T S is output (S 1 1 24). In S 1 1 24, the process shown in FIG. 17 is performed, but is omitted here because it is the same.
  • TS is output (S 1 1 24) after switching to the input T S according to the value (S 1 1 20 and S 1 1 22). After outputting TS, it is confirmed whether there is an end instruction from the control unit 1 030 (S 1 1 26), and if there is an instruction, it ends (Y of S 1 1 26). If not instructed (N of S 1 1 26), return to S 1 1 1 2.
  • the content included in the received broadcast wave is transmitted via the wireless LAN, so that the broadcasting can be performed without installing a communication line with the broadcaster.
  • Transfer content while using waves Since broadcast waves are used, content can be transferred efficiently.
  • the equipment for transmission can be simplified compared to the case of using broadcast waves.
  • the decoding and encoding of the content itself are not performed when the conversion is performed, the processing can be simplified. Also, since processing is simplified, processing delay can be reduced. Also, change TS bucket into IP bucket Since the storing process is executed, the identity of the decoding process on the receiving side can be maintained.
  • content and advertisement are distributed at the permitted time, original content and advertisement can be distributed to the area formed by the relay device.
  • an emergency alert is delivered, so an emergency alert can be delivered to the required area.
  • the means for receiving content is switched according to the reception sensitivity, the content reception probability can be improved. Also, even if the reception sensitivity of broadcast waves is poor, the use of wireless LAN can improve the content reception probability. In addition, if the reception sensitivity of the broadcast wave is good to some extent, the broadcast wave is used, so that the content can be received as usual regardless of the wireless LAN. In addition, switching between broadcast waves and wireless LAN is automatically performed, improving user convenience. In addition, one-segment broadcasting can be watched without being conscious of indoors / outdoors by delivering wireless LAN to buildings where it is difficult to receive broadcast waves.
  • the input switching unit 1 0 60 is based on the detection result of the reception sensitivity detection unit 1 0 5 8, the broadcast processing unit 1 0 5 4 and the wireless LAN processing unit 1 0. Either 5 or 6 is selected, but the broadcast processor 1 0 5 4 is used preferentially.
  • the present invention is not limited to this example.
  • the reception sensitivity detection unit 10 5 8 can detect the broadcast processing unit 1 0 5 when both the broadcast processing unit 1 0 5 4 and the wireless LAN processing unit 1 0 5 6 can receive content. Of 5 4 and wireless LAN processor 1 0 5 6, the one with lower power consumption for reception may be selected.
  • the input switching unit 1 0 60 0 selects the broadcast processing unit 1 0 5 4 and the power consumption of the wireless LAN processing unit 1 0 5 6 is greater. If it is smaller, the input switching unit 1 0 60 selects the wireless LAN processing unit 1 0 5 6.
  • the reception sensitivity detection unit 1 0 5 8 is received by the wireless LAN reception unit 1 0 7 0. The reception sensitivity of the received signal may be detected. According to this modification, since the one with lower power consumption is selected, the power consumption can be reduced.
  • the terminal device 1100 further includes a battery remaining amount detection unit (not shown). Based on the remaining battery level detected by the battery remaining amount detection unit, the input switching unit 1 060 performs broadcast processing. Either unit 1 054 or wireless LAN processing unit 10 056 may be selected. The input switching unit 1 060 indicates that when both the broadcast processing unit 1 054 and the wireless LAN processing unit 1 056 can receive content, the detection result of the battery level detection unit is greater than the set level. For example, the broadcast processing unit 1 054 or the wireless LAN processing unit 1 056 having the higher reception quality is selected.
  • the input switching unit 1 060 will receive either of the broadcast processing unit 1 054 and the wireless LAN processing unit 1 05 6. Select the one with lower power consumption.
  • the control unit 1 030 may measure the reception quality of the broadcast processing unit 1054 and the wireless LAN processing unit 1056.
  • the reception quality is, for example, an error rate. In this case, since the selection criteria are changed according to the remaining battery level, both low power consumption and high quality can be achieved.
  • Embodiment 2 of the present invention description has been made assuming that authentication is not performed.
  • the present invention is not limited to this, and for example, authentication may be performed between the relay device 1 01 4 and the terminal device 1 1 0 0 before content transmission / reception.
  • the communication network is a wireless LAN.
  • the present invention is not limited to this.
  • the communication network may be a communication system compliant with the IEEE 801.5 standard. According to this modification, various communication systems can be applied to the present invention.
  • Embodiment 2 of the present invention encryption of a wireless LAN called WEP (Wired Equivalent Privacy) or WPA (Wi-Fi Proposed Acceleration) is used. Whether to use encryption, whether to use encryption, whether to encrypt at the TS packet level, whether to use double encryption, etc. should be selected appropriately according to the system.
  • WEP Wi-Fi Proposed Acceleration
  • Whether to use encryption, whether to use encryption, whether to encrypt at the TS packet level, whether to use double encryption, etc. should be selected appropriately according to the system.
  • WEP Wi-Fi Proposed Acceleration

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un système de distribution (100) comporte une station de diffusion (10), un dispositif de terminal (30), un réseau (50), un dispositif de station de base (60) pour un réseau local sans fil, un dispositif de gestion de facturation (70) et un dispositif de station de base (80) pour des dispositifs de terminal cellulaire. La station de diffusion (10) diffuse des contenus de diffusion au dispositif de terminal (30). En outre, dans le cas d'une facturation pour des contenus de communication demandés par le dispositif de terminal (30), la station de diffusion (10) demande au dispositif de gestion de facturation (70) d'effectuer un traitement de facturation à travers le réseau (50). Le dispositif de gestion de facturation (70) effectue le traitement de facturation avec le dispositif de terminal (30) à travers le réseau (50) et le dispositif de station de base (80) pour des dispositifs de terminal cellulaire. En finissant le traitement de facturation demandé par la station de diffusion (10), le dispositif de gestion de facturation (70) rapporte l'achèvement du traitement de facturation à la station de diffusion (10) à travers le réseau (50). Après la conversion des contenus en un format reproductible par le dispositif de terminal (30), la station de diffusion (10) distribue les contenus de communication demandés.
PCT/JP2007/001195 2006-11-09 2007-10-31 Dispositif de terminal WO2008056441A1 (fr)

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JP2006304596A JP2010028152A (ja) 2006-11-09 2006-11-09 端末装置
JP2006-304609 2006-11-09
JP2006-304596 2006-11-09
JP2006304609A JP2010028153A (ja) 2006-11-09 2006-11-09 コンテンツ中継装置およびコンテンツ受信装置

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