WO2003104998A1 - 制御コンテンツ伝送方法および非蓄積型放送システム - Google Patents
制御コンテンツ伝送方法および非蓄積型放送システム Download PDFInfo
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- WO2003104998A1 WO2003104998A1 PCT/JP2003/007058 JP0307058W WO03104998A1 WO 2003104998 A1 WO2003104998 A1 WO 2003104998A1 JP 0307058 W JP0307058 W JP 0307058W WO 03104998 A1 WO03104998 A1 WO 03104998A1
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- Prior art keywords
- content
- browser
- service
- attribute information
- storage type
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1859—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast adapted to provide push services, e.g. data channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/40—Network security protocols
Definitions
- the present invention provides a non-accumulation system that automatically provides a presenter with a presenter necessary for a user to view desired content on a viewer regardless of whether the user requests the content in real time. More specifically, the present invention relates to a non-storage type broadcasting system for automatically updating views. Background art
- a browser is needed to supply the input / output devices to be used for the presentation.
- This browser is adapted to the content data to be presented, the transmission path for providing the content to the user to the user, and the factor in accordance with the factor caused by the presentation on the user side. It needs to be updated at the latest.
- Push-type information distribution services can be classified into storage-type and non-storage-type.
- a receiver such as a personal computer on the user side can send content such as news and weather forecasts broadcast from a broadcasting station on the Internet. Receive and accumulate at.
- the non-storage type push-type information distribution service allows users to broadcast content such as news and weather forecasts broadcasted from broadcasting stations on the Internet via the user's personal computer.
- the data is received by a receiving device such as an external device and presented to the user in real time.
- a receiving device such as an external device and presented to the user in real time.
- the user operates the receiving device, activates the browser which is the user interface for browsing the content by operating the receiving device, and stores it in the receiver. You can view the content that was sent.
- the broadcasting system 250 is composed of a transmitting device 2510, a transmission line 120, and And non-storage type receivers 250.
- the transmitters 25 1 and 0 are a browser enclosure 2 5 1 1, a browser transmitter 2 5 1 3, a content enclosure 1 1 1 3, a content transmitter 2 5 1 4, and a multiplexor. 1 1 o, and the transmitter 1 16.
- Browser enclosure 2 5 1 Browser enclosure 2 5 1 1, browser transmitter 2 5 1 3, content enclosure 1 1 1 3, and content transmitter 2 5 1
- each symbol is identified by adding a suffix (lower-case alphabet).
- suffix lower-case alphabet
- the browser enclosure 2511 1 is 2511a, 2511b, and 2511c
- the browser transmitter 2513 is 2 5 1 3 a, 2 5 1 3 b, and 2 5 1 3 c
- content enclosure 1 1 1 3 are 1 1 1 3 a, 1 1 1 3 b, and 1 1 1 3 c
- FIG. 25, FIG. 26, FIG. 27, and FIG. 28 show data storage states in each component of the above-described broadcasting system 2500.
- the browser enclosure 2511 exists independently for each service. Three services (S1, S2, and S3) Three independent browser enclosures 2511a, 2511b, and 2511c are provided for each.
- the browser transmitters 25 13 store the browsers B corresponding to the services (S) provided to the user, and transmit the browsers B to the multiplexers 115 according to a predetermined schedule. I do.
- the browser transmitter 2513a corresponding to the service S1 stores the browser B (S1).
- Browser B is a computer program written in native code (machine language) of the CPU (Central Processing Unit) of the non-storage type receiver 250.
- the browser transmitter 2 5 13 b corresponding to the service S 2 stores the browser B (S 2)
- the browser transmitter 2 5 13 c corresponding to the service S 3 stores the browser B (S3) is stored. If there is no need to distinguish the contents, they are collectively referred to as Browser B.
- the specific transmission method of the browser such as the transmission protocol and the transmission schedule, is uniquely determined for each service. For this reason, the processing contents of the browser transmitter 25 13 differ for each service, so that the browser transmitters 25 13 a, 25 13 b, ... 2 for each service 5 1 3 ⁇ ( ⁇ is an arbitrary natural number) and each exist independently.
- the content storage unit 111 stores content C belonging to the corresponding service.
- the content storage unit 111 exists independently for each service. Independent for every three services There are three content enclosures, 11a, 11b, and 11c.
- the content storage unit 11 13 a corresponding to the service S 1 has two service contents C (S 1, 1) and the same (S 1, 1). 1, 2) and are stored.
- the content storage unit 111b corresponding to the service S2 does not store the content C.
- the service enclosure C (S3, 1), C (S3, 2), and C (S3, 3) are stored in the content storage unit 1113c corresponding to the service S3. It is stored. If there is no particular need to distinguish between the contents, they will be collectively referred to as service content C as described above.
- the content transmitter 25 14 sends the content C (S m, O) stored in the content storage 11 13 of the corresponding service to the predetermined content. Is transmitted to the multiplexers 1 and 15 in the manner described above.
- S m identifies each service by adding a suffix m (arbitrary natural number) to a symbol S representing a service, and O (arbitrary). Is the number of the multiple contents C that make up the service S m.
- the method of transmitting a browser or content differs for each service. For this reason, a plurality of independent browser transmitters 2513 and a plurality of content transmitters 2514 must be provided for each service. Furthermore, browser B and content C have different transmission methods. For this reason PT / JP03 / 07058
- the device 115 includes a browser B output from the browser transmitter 25 13, a service container output from the content storage device 113, and a source C (Sm , ⁇ ) are multiplexed into a format suitable for transmission, and the digital signal is output.
- the digital mixer bit stream is output. It may be composed of a multiplexing device and a modulation device in the system.
- the transmitter 116 transmits the processing result of the multiplexer 115 to the transmission line 120.
- the transmitter 1 16 can use a modem if the transmission path is a wired communication line.
- a transmission parabolic antenna may be used for the transmitter 6.
- the transmission path 1200 is a means for transmitting information such as a content browser transmitted from the transmission section 210 to the non-storage type reception apparatus 250.
- the transmission path may be an optical fiber or various cables, a broadcasting / communication% star and space, or a package media such as DVD and its distribution channel.
- the non-storage type receiver 2 5 2 0 is a receiver 13 1, demodulator / separator 1 3 2 1 3 3, drawing unit 1 3 4, presenter 1 3 5, input 1 3 6, CPU 1 3 7 , And memory 138.
- the receiver 1331 receives information such as content C and browser B sent to the transmission line 120 and outputs a digital stream. Power.
- the receiver 13 1 can be a modem or an antenna and tuner module in a general digital broadcasting receiver.
- the demodulator / separator 1332 demodulates the digital bit stream output from the receiver 131, and separates the multiplexed information separately.
- the demodulation / demultiplexer 13 2 performs the processing in the opposite direction to the processing in the multiplexer 1 15 of the transmission device 25 10.
- the output of the demultiplexer 1332 can be read not only by the accumulator 133 and the plotter 1334 but also by the CPU 1337.
- the accumulator 133 accumulates only the browser among the browser and the content output from the demodulator / separator 1332. This is because, in the non-storage type receiving device 2520, since the content C transmitted from the transmitting device 2510 is displayed in real time, the content C is stored. It is not necessary to keep it, but on the other hand, a browser for presenting the content C to be distributed; B must always be prepared.
- the accumulators 13 33 are constituted by, for example, a randomly accessible recording medium such as a hard disk. The contents of the data recorded in the accumulator 133 can be read and changed by the CPU 133.
- the accumulator 13 3 has a total of three browsers B (S 1), B (S 2), and B (S) supplied from the demodulator / demultiplexer 13 2. S 3) is stored. Note that only the browser B is output from the demodulator / separator 132 to the accumulator 1333, and the content C is output from the demodulator / separator 132 to the plotter 1334. Only the output may be made. According to the request from the CPU 1337, the drawing unit 1334
- the presentation device 135 presents the graphics and / or audio output from the drawing device 134 in a format that can be viewed by the user.
- the display may be a CRT display, for example.
- the input device 136 is a means operated by a user to transmit a user's instruction to the non-storage type receiving device 250. It is an instruction.
- Input 1 36 can use a remote control and a remote control receiver, keyboard, mouse, and so on.
- the CPU 1337 is a central processing unit, is interconnected with each component of the non-storage type receiving device 250, and is stored in the memory 1338. By executing the above, the entire non-storage type receiving apparatus 2502 is controlled.
- the U138 is composed of a RAM ROM, which is a non-rewritable semiconductor memory, and is used to store data for processing by the CPU137 and to be executed by the CPU137. Used for storing programs and data.
- the memory 1338 includes a browser list 2700 and an execution form 2 which is a native code (machine language) for the CPU 1337. 6 5 1 is stored
- the list of browsers 2 7 0 0 is tabular information having a row for each service, and a column 2 7 1 0 of the file name of the browser 8 and the service name column 2 7 2 0.
- the browser used to use the service of interest in the information output from the demodulator / demultiplexer 132 is specified. can do.
- step S2801 the main operation of the non-storage type receiving apparatus 250 will be described in detail.
- the service name of the browser list 2700 stored in the memory 1338 is displayed in a list on the screen.
- the display on the screen is performed by the drawing unit 134.
- step S2802 selection of one service from the list displayed in step S2801 is detected based on the operation of the input device 1336 by the user.
- step S2803 for the unselected service detected in step S2802, the file name of browser B in browser list 270
- the file name B (S m) of the browser B in the accumulator 133 is identified by referring to the column of (b).
- step S2804 the file B (Sm) specified at step S2803 is executed. Since the browser is composed of native code of CPU137, it can be directly executed by CPU137.
- step S2901 CPU 1337 breaks Browser B is activated.
- step S2902 the currently transmitted browser B is received from the transmitting device 2510 by the receiver 1331 and the demodulator / demultiplexer 1332. The version is confirmed.
- step S2903 if browser B received and acknowledged in step S2902 is a newer version than browser B currently running, Proceed to step S2904 of this step, otherwise the process ends.
- step S2904 the non-storage type receiving device 2520 receives the transmitted browser B, and the accumulator 1333 displays the received browser B in FIG. 26. As illustrated, it is temporarily stored as a file.
- step S2905 the currently executing browser B is replaced with the temporarily stored file. Then, by restarting the browser B, the execution of the browser of the received new version is started.
- the transmitting device it is necessary to provide a different browser transmitting device for each service.
- the code of the browser of each service itself is newly added.
- a function has been programmed to receive a new browser and replace itself with the new browser that has been received in order to enable a more efficient service.
- the browser transmission method is different for each service, and its realization is only programmed individually for each browser for each service. It is necessary for the user to manually obtain a browser in advance by manually starting a file transmission protocol such as ftP, which is troublesome.
- the transmission method of the browser is different from the transmission method of the content, when subscribing to multiple services, the transmission of the browser of one service is performed by the browser of another service. May interfere with the transmission of content.
- the present invention is intended to be used in digital broadcasting and storage-based broadcasting in which a service composed of a plurality of contents transmitted in a computer network is provided for real-time viewing and listening. It is an object of the present invention to provide a method and a system for providing a user interface that realizes flexible service while maintaining service security from contents. Disclosure of the invention
- the present invention has the following features in order to achieve the above object.
- one or more services composed of content are provided to the user in real time in real time, and a user interface unique to each of the services is provided.
- a non-storage type broadcasting system to be provided,
- the transmitted control content is received, and the received control content is received.
- a receiver for activating the content and executing a user interface, wherein the user interface is transmitted and received as content.
- the second aspect of the present aspect is the first aspect, wherein the control content is a content browser
- the third aspect of the present aspect is the first aspect, wherein the control content is a content browser.
- the transmitter sends the content including the control content and sends the content.
- a service attribute information transmitter for transmitting service attribute information indicating the contents of the service
- the receiver is characterized by comprising a control content identifying device that identifies control content from the received content based on the received content and service attribute information. You.
- the content sending means is configured to provide the content with a content header for defining the content of the content.
- Data receiving means, and the receiving means specifies control content in the received content based on the r content header of the received content.
- the transmitting means further comprises an electronic signature device for electronically signing the control content, and the service attribute information sending device discloses the electronic signature.
- the key is included in the service attribute information and transmitted.
- the receiver uses the public key included in the received service attribute information.
- a signature authenticator that authenticates a digital signature according to T / JP03 / 07058 is further provided, and the control content is specified by the authentication of the electronic signature.
- the sixth aspect of the present invention is characterized in that, in the fifth aspect, authentication using an electronic signature is performed using an independent key for each service.
- the content transmitter further includes a content ID space manager for transmitting information defining a subspace of the content ID space.
- the receiver is characterized in that the content ID is included in the subspace, and a specifier for specifying the control content is further provided.
- the eighth aspect of this aspect is a non-storage type broadcasting system in which one or more services composed of content are provided to the user in real time in a non-storage type broadcasting system.
- a control content transmission method for transmitting user interface comprising:
- a step of receiving the sent control content, activating the received control content, and executing a user interface is a step of receiving the sent control content, activating the received control content, and executing a user interface.
- the ninth aspect of the present aspect is the eighth aspect, wherein the control content is a browser for content, and the tenth aspect of the present aspect is the eighth aspect.
- the step includes a content sending step for sending the content including the control content, and a content sending step for sending the content including the control content.
- a service attribute information sending step for sending service attribute information indicating the contents of the service for sending service attribute information indicating the contents of the service
- the receiving step includes a control content step for specifying a control content in the received content based on the received content and the service attribute information.
- the content sending step includes the step of assigning, to the content, a content header for defining the content of the content. Equipped with an awarding step,
- the receiving step may further include a step of identifying the control content in the received content based on the content header of the further received content. And are characterized.
- the transmitting step further comprises an electronic signature step for electronically signing the control content
- the service attribute information sending step further includes a service attribute information sending step for sending the public key of the digital signature included in the service attribute information and sending the service.
- the receiving step includes a signature authentication step of authenticating the electronic signature using the public key included in the received service attribute information, and a step of identifying the control content by authenticating the electronic signature. It is characterized in that it further comprises a pump.
- the third aspect of the present phase is the electronic aspect according to the first aspect, imagination
- PCT / JP03 / 07058 It is characterized in that authentication by signature is performed using an independent key for each service.
- the content sending step is a content ID space for sending information defining a subspace of the content ID space.
- the receiving step is characterized in that the content ID is included in the subspace, and a step for specifying the control content is further provided.
- one or more services composed of content are provided for real-time user viewing and a unique user interface is provided for each of the services.
- a user interface to which service attribute information indicating the contents of the service is transmitted, which is transmitted as part or all of the content
- a receiver for receiving the content transmitted from the transmitter, an extractor for demodulating the received content and extracting the content and service attribute information;
- a control content specifying unit that specifies control content from the received content based on the extracted content and service attribute information.
- the content is further transmitted with the content header defining the content of the content.
- the extractor further derives the content from the received content. Extract the header,
- the control content specifying device is characterized in that the control content is specified from the received content based on the extracted content header.
- the content is electronically signed with the control content, and the public key of the electronic signature is included in the service attribute information. Sent out,
- the receiving device further includes a signature authenticator that authenticates the electronic signature using the public key included in the received service attribute information, and the control content specifying device controls the control content by authenticating the electronic signature. It is characterized by specifying content.
- the eighteenth aspect is characterized in that, in the seventeenth aspect, authentication by an electronic signature is performed using an independent key for each service.
- the content in a non-storage type broadcasting system, is transmitted with information defining a subspace of the content ID space added to the content.
- the device is further characterized in that the control content is specified by including the content ID in the subspace.
- FIG. 1 is a block diagram showing a configuration of a non-storage type broadcasting system according to the first embodiment of the present invention.
- FIG. 2 is an explanatory diagram of service attribute information stored in the service attribute storage shown in FIG.
- FIG. 3 is a schematic diagram showing an example of the content main body stored in the content storage device shown in FIG.
- FIG. 4 is an explanatory diagram of service attribute information in the non-storage type broadcasting system shown in FIG.
- FIG. 5 is an explanatory diagram of service contents in the non-storage type broadcasting system shown in FIG.
- FIG. 6 is an explanatory diagram of the browser content in the non-storage type broadcasting system shown in FIG.
- FIG. 7 is a schematic diagram showing an example of the content stored in the storage shown in FIG.
- FIG. 8 is a schematic diagram showing information stored in the memory shown in FIG.
- FIG. 9 is a flowchart showing an operation of executing the browser content by the non-storage type receiver shown in FIG.
- FIG. 10 is a flowchart showing an operation of updating the browser content by the non-storage type receiving apparatus shown in FIG.
- FIG. 11 is a block diagram showing a configuration of a non-storage type broadcasting system according to a second embodiment of the present invention.
- FIG. 12 is an explanatory diagram of service attribute information in the non-storage type broadcasting system shown in FIG.
- FIG. 13 is an explanatory diagram of browser contents in the non-storage type broadcasting system shown in FIG.
- FIG. 14 is a flowchart illustrating an operation of updating the browser content by the non-storage type receiver illustrated in FIG. 11.
- FIG. 15 is a block diagram showing a configuration of a non-storage type broadcasting system according to the third embodiment of the present invention.
- FIG. 16 is an explanatory diagram of service attribute information in the non-storage type broadcasting system shown in FIG.
- FIG. 17 is an explanatory diagram of the browser content in the non-storage type broadcasting system shown in FIG.
- FIG. 18 is a flow chart showing an operation of updating the browser content by the non-storage type receiving device shown in FIG.
- FIG. 19 is a block diagram showing a configuration of a non-storage type broadcasting system according to the fourth embodiment of the present invention.
- FIG. 20 is an explanatory diagram of service attribute information in the non-storage type broadcasting system shown in FIG.
- FIG. 21 is an explanatory diagram of the content ID in the non-storage type broadcasting system shown in FIG.
- FIG. 22 is an explanatory diagram of the browser content in the non-storage type broadcasting system shown in FIG.
- FIG. 23 is a flowchart showing an operation of updating the browser content by the non-storage type receiver shown in FIG.
- FIG. 24 is a block diagram showing the configuration of a conventional non-storage type broadcasting system.
- FIG. 25 is a schematic diagram illustrating an example of the content stored in the content storage device and the browser storage device illustrated in FIG. 24.
- FIG. 26 is a schematic diagram showing an example of the content and the browser stored in the non-accumulator shown in FIG. 24.
- FIG. 27 is a schematic diagram showing information stored in the memory shown in FIG.
- Fig. 28 shows the non-storage type broadcasting system shown in Fig. 24.cca
- FIG. 29 is a flowchart showing the execution operation of the browser by the receiving device shown in FIG. 24.
- FIG. 30 is a flowchart showing the operation of updating the browser by the receiving device shown in FIG. 24.
- FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9, and FIG. 10, a storage type broadcast according to the first embodiment of the present invention Describe the system.
- the non-storage type broadcasting system 100 includes a transmitting device 110, a transmission line 120, and a non-storage type receiving device 130. Including. As will be described later, the non-storage type receiving device 130 stores the browser, but does not store the content itself, and is called a non-storage type.
- the transmitting device 110 is composed of a service attribute storage unit 111, a content header adding unit 112, a content storage unit 113, a content sending unit 114, and a multiplexer 111. 5 and the transmitter 1 16.
- a plurality of content storage units 113 are prepared, and each suffix is identified with a suffix (lowercase alphabet).
- suffix is similarly added to the symbols to identify them. If individual identification is not necessary, for example, the content storage unit 113 is used.
- the suffix is similarly attached to the symbol to identify each of them.
- the content storage units 113 which are collectively referred to without a suffix to each symbol, are each a service entity. Contains the content body Dc. Then, each of the content storage units 113 sequentially supplies the content main body Dc to the content transmission unit 114.
- the content transmitter 111 transmits the supplied content body Dc to the content header applicator 112.
- the content header applicator 1 1 2 includes, in the supplied content body D c, a content header He including the management information of the content body D c including the header information. To generate content C. The generated content C is supplied to the multiplexer 115.
- the multiplexer 1 15 multiplexes the service attribute information Isp supplied from the service attribute storage unit 111 and the content C output from the content header appender 112. And supplies it to the transmitter 1 16.
- the transmitter 1 16 modulates the multiplexed service attribute information Isp and the content C into a digital bit stream suitable for the transmission path, and transmits the signal.
- Output to The transmitter 1 16 can be a modem if the transmission path is a wired communication line, or a transmission parabolic antenna if it is a broadcast communication satellite and space. Good with tena.
- the transmission path 120 is a means for transmitting information such as the content C and the browser B transmitted from the transmitting device 110 to the non-storage type receiving device 130.
- the transmission path can be composed of an optical fiber, various cables, a broadcasting communication satellite and space, or a package medium such as a DVD and its distribution channel.
- the non-storage type receiver 13 0 is composed of a receiver 13 1, demodulator 13 2, accumulator 13 3, drawing device 13 4, presenter 13 5, input device 13 6, CPU 1 3 7 and memory 1 3 8 are included. Note that the accumulator 133, the drawing unit 134, the input unit 133, the CPU 137, and the memory 138 are connected to each other by a data node.
- the receiver 1331 receives information such as the content C and the browser B sent to the transmission path 120 and outputs a digital stream.
- the receiver 1331 can be composed of a communication modem, a cable modem, a mobile communication module such as a Bluetooth, an antenna and a tuner module in a general digital broadcast receiver.
- the demodulator / separator 1332 demodulates the digital bit stream output from the receiver 131, and separates the multiplexed information separately.
- the demodulation / separation unit 132 performs processing in the opposite direction to the processing in the multiplexer 115 of the transmission apparatus 110.
- the output of the demodulator / separator 13 2 is not only supplied to the accumulator 13 3 and the drawing unit 13 4, but can also be read by the CPU 13 37.
- the accumulator 133 is, for example, a random accessible storage medium such as a hard disk, and can be read and changed by the CPU 1337.
- the accumulator 1333 is used to browse the service contents C (Sm, ⁇ ) and the browser contents C (Sm, Bflg) output from the demodulator / separator 1332. Only the content C (Sm, Bflg) is accumulated. This is because the service content C (S m, ⁇ ) transmitted from the transmitting device 110 is displayed in the non-storage type receiving device 130 in real time, so that the service is not required. It is not necessary to accumulate the content C (Sm, O), while the browser B for presenting the service content C (Sm, 0) to be delivered is provided. This is because the stored browser contents C (Sm, Bf1g) must always be prepared.
- the service content C (S m, O) refers to the entity of the services provided by the non-storage type broadcasting system 100, such as programs and data, which are enjoyed and enjoyed by users. .
- the browser content C (Sm, Bflg) provides a user interface for the user to actually enjoy or use the provided service on the non-storage type receiver 130. Realize.
- the browser content C (Sm, Bf1g) is a control code that can be executed in the program code execution environment provided by the non-storage type receiver 130, and the service Content C (S m, 0) is processed.
- the drawing unit 1334 In response to a request from the CPU 1337, the drawing unit 1334 outputs the service content C (Sm) input from the ⁇ SD (on-screen display) and the demodulator / separator 1332. , ⁇ ) Draw graphics for display on the screen.
- the presentation device 135 presents the output from the drawing device 134 so that the user can view it.
- the presenter may be, for example, a CRT display.
- the input device 1336 is for the user to instruct the non-storage type receiving device 130.
- the input device 1336 can be composed of a remote control, a remote control light receiving section, a keyboard, a mouse, and the like.
- the CPU 137 is a central processing unit, is interconnected with each component of the non-storage type receiving device 130, and has a computer processor stored in the memory 138. By executing the program, the entire non-storage type receiving apparatus 130 is controlled.
- the memory 138 is composed of RAM / ROM, which is a rewritable and non-Z-capable semiconductor memory, and is used to store data for processing by the CPU 137 and to be executed by the CPU 137 Used to store computer program data.
- FIG. 2 FIG. 3, FIG. 4, and FIG. 5, data stored in each component of the above-described non-accumulative broadcasting system 100 will be described.
- the service attribute storage unit 111 stores service attribute information 1 sp that does not have the attribute of each service provided by the non-storage type broadcasting system 100. .
- the content storage unit 113 stores a content body Dc which is the substance of the content C, which is data constituting a corresponding service.
- the content storage unit 113 exists independently for each service. That is, three Three independent content bins 113a, 113b, and 113c are provided for each of the different services.
- the content enclosure 1 13a corresponding to service S1 has two content bodies Dc (SI, 1) and Dc (S1, 2) and one browser content.
- the main unit Dc (SI, Bf1g) is stored.
- An arbitrary content body D c identifies a service by adding a suffix m (arbitrary natural number) to a symbol S representing a service, and identifies a plurality of services S m
- a parameter ⁇ ⁇ (arbitrary natural number) indicating the number of the content C is attached, and the content is expressed as a content body D c (S m, ⁇ ). It is assumed that
- the browser content body Dc (SI, Bf1g) uses the same format as the content body Dc for the browser B (SI) provided for the service S1. It is generated and can be expressed as the body Dc (Sm, Bf1g), like the service content body Dc (Sm, ⁇ ).
- the browser content body Dc (Sm, Bf1g) differs from the service content body Dc (Sm, O) in that the content is different from the service content body Dc (Sm, O).
- the service attribute information I sp will be described later in detail with reference to FIG.
- the browser content body D c (S m, B fig) has the same data format as the service content body D c (S m, O), the content storage device 1 1 3 is both Cannot be identified, and both are treated as the content body D c.
- both the browser content body Dc (Sm, B fig) and the service content body Dc (Sm, O) are simply referred to as the content body Dc.
- the service content body D c (S m, O) will be referred to as the service content body D c S
- the browser content body D c (S m, S m, B f 1 g) is referred to as the browser content body D c B.
- the browser content C (Sm, B flg) composed of the browser content body Dc (Sm, B flg) is abbreviated as the browser content Cb, and the service content is referred to as a browser content Cb.
- the service content C (Sm, O) composed of the content body Dc (Sm, O) is abbreviated as the service content Cs.
- FIGS. 4, 5, and 6, the service content Cs and the browser content Cb output from the content header applicator 111 will be described in detail. explain .
- Figure 4 shows an example of the service attribute information I sp stored in the service attribute storage unit 111.
- the service attribute information I sp is information on all services (S l, S 2,... S m) provided by the non-storage type broadcasting system 100. Each row in the table corresponds to each service, and is composed of a service ID and a service name.
- the first line shows a service whose service ID is S1 and whose service name is “Today's News”.
- the second line shows a service whose service ID is S2 and whose service name is "recommended information”.
- a service whose service ID is S3 and whose service name is "new car guide” is shown.
- the service ID has a unique value in the service attribute information Isp and can be used to identify the service.
- FIG. 6 schematically shows the data structure of the browser content Cb.
- the content C is composed of a content body Dc, which is the data of the content C itself, and a content header Hc, which is a metadata attached to the content body Dc. It is composed of
- a content header HcS is associated with the service content body Dcs of the content C (S1, 1), which is the service content Cs. ing.
- the browser content body DcBn of C (S1, Bf1g), which is the browser content Cb, is associated with the content header HcB. Have been taken.
- the content header He (that is, He S and He B) is represented in a table format in which pairs of items and values are set as rows.
- the service header Hes of the service content Cs (i.e., C (S1,1)) is the service ID, content ID, content version, and content. Contains four lines for the name.
- the service ID corresponds to the service ID of the service attribute information Isp illustrated in FIG. 4, and identifies which service S the corresponding content C corresponds to.
- the service ID is SI
- the content C indicates that it is a service of “Today's news” shown in FIG.
- Content ID is used to identify Content C itself.
- the content IDs are, for example, managed so as not to be duplicated on the transmitting side, and have at least a value which is not duplicated in the non-storage type broadcasting system 100. And.
- the content version represents the old and new of content C.
- the content zone takes an independent value for each content ID.
- the transmission of the content C is performed.
- the content content with a value larger than the existing content Cc is assigned to the new content Cn.
- the content name is an item that the user reads as a character string when selecting the content. In this example, it is indicated that the content body D c is a “weather forecast”.
- Service ID The above Service ID, Content ID, Content No. and Content Name can be found in the Service Content Header HcS and the Browser Content Header HcB. Commonly included.
- the browser content header HcB of the browser content Cb further includes a browser content flag line.
- the browser content flag B f 1 g is an item for indicating that the content C is the browser content Cb. Yes, it is equivalent to the above-mentioned parameter fig.
- the browser content flag of the browser content header HcB is True, which indicates that the content body Dc is the browser content body DcB. .
- the service ID is S1 and the content ID is 101
- the service “Today's news” is used.
- the browser content Cb indicates that the content is composed of a content body Dc having a content ID of 101.
- the service ID, the content ID, and the browser content flag are the minimum required information that specifies that content C is browser content Cb.
- the content transmitter 114 transmits the content main body Dc sequentially supplied from the content storage 113 to the content header applicator 112.
- the content header applicator 111 adds content headers He (HcS, HcB) to the content body Dc (that is, Dcs, DcB), A content C (that is, C s, C b) is generated and supplied to the multiplexer 115.
- the content C (service content C s, browser content C) transmitted from the transmission device 110 via the transmission path 120 will be described below.
- b) is non-accumulated A description will be given of what data is stored by each component of the pattern receiving device 130.
- the digital bit stream composed of the content C and the service attribute information Isp transmitted from the transmission device 110 via the transmission line 120 is a non-storage type.
- the signal is received by the receiver 13 1 of the receiving apparatus 13 0 and supplied to the demodulation / separator 13 2.
- the demodulator / separator 13 2 demodulates the digital bitstream, and obtains the content C and service attribute information included in the demodulated digital bitstream. Separate and regenerate Isp.
- the demodulator / separator 1332 further extracts the content header Hc from the reproduced content C, and outputs the content header Hc to the bus together with the service attribute information Isp.
- the reproduced content C is temporarily held in the demodulator / separator 1332. If it is necessary to distinguish between the reproduced content C and the content C already stored in the storage device 133, the content C is retained in the demodulation / separation device 132.
- the content C is referred to as demodulated content Cn, and the content C stored in the accumulator 133 is referred to as stored content C a.
- the content C reproduced by the demodulator / separator 132 is supplied at a predetermined timing and stored therein.
- the accumulator 13 3 has the content C of each service output from the content header applicator 1 12 to the multiplexer 1 15 (that is, C Only the browser content Cb of s, Cb) is stored in the accumulator 133. That is, As described with reference to FIG. 7, the storage content C a stored in the storage 13 is only the browser content C b.
- the accumulator 133 Under the control of the CPU 1337, the accumulator 133 further transfers the browser content body Dc (S, Bflg) contained in the stored browser content Cb to the bus or the bus. Output to drawing unit 1 3 4.
- the drawing unit 134 generates a video signal that causes the presentation unit 135 to draw an image based on the supplied information.
- memory 138 includes service attribute information I sp, browser content execution interface printer 271, and native code for CPU 1337.
- Executable form 2 65 1 is stored.
- Browser content execution interface 271 is intended to execute content as a high-level computer language program.
- step S501 the service name of each service described in the service attribute information Isp output from the demodulator / demultiplexer 1332 is displayed on the screen of the presenter 135. Listed above.
- step S502 the user selected from the list of service names displayed in step S501 based on the operation of input device 1336 by the user.
- One service is detected.
- the service selected by the user is specified based on the operation of the input device 136 by the user and the list of service names.
- step S503 the service ID corresponding to the service specified in step S502 is obtained from the service attribute information Isp.
- step S504 all contents C stored in the accumulator 1333 are searched, and the service ID obtained in step S503 is stored in the storage.
- the content Cb in which the browser content flag Bf1g of the content header HeB is True is selected.
- step S505 the browser content Cb selected in step S504 is executed by the browser content execution interface 271.
- the content header Heb of the browser content Cb is provided with the browser content flag Bf1g.
- the browser content flag Bf1g it is possible to distinguish the browser content C from the other normal service content Cs.
- step S601 the content Cn (that is, Cb, Cs), the service attribute information Isp, and the content header are determined by the demodulator / separator 132. Da Hc (ie, HcB, Hcs) is reproduced.
- step S608 it is determined whether or not the browser content flag Bf1g of the separated new content Cn is true (True). If not (False), the process returns to step S601 described above. Note that even if there is no browser content flag Bf1g, that is, if the service content is Cs, it is also determined to be negative in this step. Then, if the browser content flag Bf1g is true, that is, if the new content Cn is the browser content Cb, the processing proceeds to the next step S602. Proceed to.
- step S602 the content header Hc separated in step S601 is output to the bus. That is, only the browser content header HcB of the browser content Cb is output.
- step S603 remove the separated content New content C c (browser content C b) corresponding to da H c is searched and selected in the storage device 133. That is, in all the browser contents Cb stored in the storage device 133, the service ID is described in the separated content header He in the separated content header He. The current content C c (browser content C b) that is the same as the service ID is selected.
- step S604 If it is determined in step S604 that the browser content Cb having the same content ID does not exist in the accumulator 1333, the process proceeds to the next step S6. Go to 0 5.
- step S605 the new browser content C n (C b) which does not correspond to the storage device 133 is replaced with the existing browser content C c (C b ) Is newly stored. Then, the process returns to step S601 described above.
- step S604 as a result of the search in step S602, the browser content Cb (the current content C) having the same content ID in accumulator 1333 is obtained. If it is determined that c) exists, the process proceeds to step S606.
- step S606 based on the contention included in the browser content header HcB output in step S602, the The new browser content C n (C b) separated by S601 is newer than the existing browser content C n (C b) stored in the accumulator 133. It is determined whether or not. If it is determined that it is new, the process proceeds to the next step S606.
- step S607 it is stored in accumulator 133.
- the existing browser content C n (C b) is
- step S606 the demodulated new browser content C n (C b) is stored in the accumulator 13 33, and the existing new browser content C c (C b) If it is judged that it is not newer, skip the update step of the existing browser content C n (C b) by the above-mentioned step S607. And the process returns to step S601.
- the transmission 10 transmits the browser content Cb that provides a user interface for each service Sm to the respective service Sm. It is sent out as part or all of the content C that constitutes Sm. Then, the non-storage type receiving apparatus 130 receives the transmitted content C, receives the content C, activates the browser content Cb included in the content C, and activates the user interface. Run Ace.
- the processing shown in FIG. 10 may be executed as a part of step S504 of the flowchart shown in FIG. 9, or the processing for updating the browser content Cb may be performed. May be executed only when necessary.
- the browser content Cb is transmitted to the non-storage-type receiver 1300 when something newer than the purge already held by the non-storage-type receiver 130 is delivered or the non-storage-type receiver 1 30 Automatically updated or retained when something not retained is delivered.
- the update process of the content c is performed only when the content C is the browser content Cb.3
- the repetition mechanism is not a function for each specific service but a non-storage type.
- the browser content Cb which is the interface for each service
- the browser content Cb is sent as part of the content, so that the user interface is transmitted.
- the user interface can be updated as if the content was updated as if it were hot.
- the non-storage type broadcasting system 700 includes a transmitting device 7100 and a transmission line 12 as in the non-storage type broadcasting system 100 shown in FIG. 0, and the atypical receiver 730.
- the transmission device 7100 is different from the transmission device 110 of the non-storage type broadcasting system 100 in that an electronic signature unit 711 is added.
- the non-storage type receiving device 730 is obtained by adding a ⁇ extractor 740, an S g extractor 740, and a decryption device 721 to the non-storage type receiving device 130.
- the non-storage type broadcasting system 100 and Description of common features is omitted, and features unique to the non-storage type broadcasting system 700 will be mainly described.
- the electronic signature device 711 manages the key of the electronic signature and performs an electronic signature (digital signature) on the browser contents Cb.
- Public key cryptography is used for digital signatures. This technology creates a set of private and public keys for a distributor of information, distributes only the public key to users of the information, and keeps the private key secret. Good. Then, the distributor digitally signs the information to be distributed using a private key (the digitally signed information is in the form of the original information and the electronic signature). By using the digitally signed information received by the user and the public key of the distributor, it is possible to authenticate that the information is digitally signed by the distributor who has the private key .
- the electronic signature unit 711 holds a private key and a public key for each service.
- the electronic signature unit 711 electronically signs the browser content Cb of the service with the secret key of the service. That is, the electronic signature unit 711 is connected to the content storage unit 113, and each of the content storage units 113a, 113b, and 113c is connected to the content storage unit 113. It outputs a different public key KP to the service attribute storage unit 111 for each service according to the service of the content body D c supplied from the server.
- the electronic signature is added to the content header He B of the browser content Cb to add the electronic signature item to the browser content Cb. Is stored in.
- the browser content Cbc (SI, Bsgn) is added to the content header.
- information (electronic signature) obtained by performing an electronic signature on the body D c of the corresponding content with the secret key of the service S1 to which the content belongs is included.
- the content header HcB to which the digital signature has been added is identified as the content header HcBc.
- the browser content having the item of the electronic signature is referred to as browser content C bc to distinguish it from other browser content C b, and is referred to as C (S m, B sgn). Shall be represented.
- the service attribute storage unit 111 generates service attribute information I spc ⁇ ⁇ including the public key K P, and outputs the generated service attribute information to the server 15.
- Figure 12 shows the structure of the generated service attribute information I spc.
- the service attribute information I spc has a column for storing the value of the public key K P.
- a public key is stored for each of the three services S1, S2, and S3.
- the electronic signature unit 711 further generates an electronic signature S g and outputs it to the container header attaching unit 112.
- the content header applicator 111 is attached to the content body D c supplied from the content transmitter 114 and the electronic signature S g supplied from the electronic signature unit 71 1.
- a signed browser content C bc is generated based on the content, and the signed browser content C bc and the service content C s are output as content C to the multiplexer 115.
- the non-storage type receiver 730 converts the digital bit stream received by the demodulator / demultiplexer 132 from the content C ( C s and C bc), the content header He (Hcs, HcBc), and the service attribute information Ispc.
- Content C (C s and C bc) is held inside demodulator / separator 13 2, and content header He (He S and He Be) is output to the path. Further, it is output to the S g extractor 741, and the service attribute information Ispc is output to the KP extractor 74.
- the S g extractor 740 extracts the electronic signature S g from the content header He, the browser content C (S m, B f 1 g) in the supplied content header He. And outputs it to the bus.
- the KP extractor 74 extracts the public key KP from the service attribute information Ispc and outputs it to the node.
- the decryption unit 721 authenticates the electronic signature in the content header HeBc based on the public key KP supplied via the bus.
- the electronic signature S g of the received browser content C bc and the public key KP in the service attribute information I spc determine the correctness.
- the operation for starting C b is the same as that in FIG. 9 except that the service attribute information I sp has been changed to I spc and the target content C has been changed to the browser content C bc.
- the operation is basically the same as the operation of the non-storage type receiving apparatus 130 according to the first embodiment described with reference to the flowchart described with reference to FIG. .
- the update operation of the browser content Cb by the non-accumulative receiving device 730 will be described with reference to the flowchart shown in FIG.
- the update operation of the browser content Cb by the non-storage type receiving device 730 is performed by updating the browser content Cb by the non-storage type receiving device 130 described with reference to FIG. Similar to update operation. That is, in the flowchart shown in FIG. 14, in the flowchart shown in FIG. 10, a new portion is provided between step S603 and step S604. Steps S1001, S1002, S1003, and SI004 have been added.
- the browser content Cb is processed through the processing in steps S601, S602, and S603. Then, the process proceeds to the newly added step S1001.
- step S1001 the line of the digital signature stored in the content header HeB of the retrieved browser content Cbc is referred to. If the item of the electronic hot name exists, the process proceeds to step S1002.
- step S 1002 the digital signature S g of the browser content C bc matches the public key KP of the corresponding service. Authenticates what was done with the corresponding private key.
- the public key KP used in this case is obtained by selecting the line of the corresponding service from the service attribute information Ispc. Then, the process proceeds to the next step S1003.
- step S 1003 If it is determined in step S 1003 that the digital signature S g is not correct as a result of the authentication in step S 1002, the processing proceeds to step S 1003. Proceed to S1004.
- step S1004 a warning is displayed to the effect that the signed browser content Cbc is abnormal, and the process ends. That is, if it is determined that there is something abnormal in the electronic signature (No in step S1001 or step S1003), All warnings are issued in this step. Then, the process proceeds to the above-mentioned step S603.
- step S1003 determines whether the electronic signature is correct. If it is determined in step S1003 that the electronic signature is correct, the above-described step S1004 is skipped, and the processing is performed in the first embodiment. In the same way as in the case of step S 604, S 605, S 606, and then proceed to S 607.
- transmitted content C is transmitted in the same manner as in non-storage type broadcasting system 1000.
- the non-storage type receiving device 730 can transmit the executable browser content Cb. You.
- the content header may be included in the content itself and subject to the electronic signature.
- a simple digital signature method that does not use public key encryption may be used. For example, a secret key is created for each service, and the secret key is stored in the receiving device by some method. Then, the information that conveys that the content is browser content Cb is encrypted with the secret key of each service, the receiving device decrypts this information with the secret key, and uses the browser content Cb to decrypt the information. You may judge it.
- the electronic signature unit 711 that electronically signs the browser content C bc, which is the content providing the user interface for each service.
- the content storage unit 113 that sends out the content body Dc including the browser content body DCbc and the public key KP of the electronic signature Sg are stored in the service attribute information Ispc common to all services.
- Service attribute storage 1 1 1 to send and send By providing a non-storage type receiving device 730 that determines that the content C is a browser content C bc by signing the signature S g
- the reliability of the contents C distributed in the broadcasting system 700 can be ensured.
- an electronic signature is used as a mechanism for designating the browser content Cb from a plurality of content C belonging to one service, and the electronic signature is used.
- the non-storage type broadcasting system 1000 0 has the same configuration as the non-storage type broadcasting system 100 shown in FIG. Road 120, including the nest and non-storage-type receiver 130.
- the transmitting device 110 is replaced with the content header adding device 1 1 2 in the transmitting device 110 of the non-storage type broadcasting system 100 with the content header adding device 1 2 i It is just being done.
- the description of the features common to the non-type broadcasting system 100 will be omitted, and the features unique to the non-storage type broadcasting system 100 will be mainly described.
- Content header applicator 1 1 2 i is a content header
- the following functions have been added to the functions of the applicators 1 1 and 2.
- the browser content C bi is specified for the plurality of content bodies D c stored in the content storage units 113 a, 113 b, and 113 c.
- the content ID and the content version of the specified content are extracted as the browser identification information B id.
- the content header applicator 112i outputs the extracted browser identification information Bid to the service attribute storage 111.
- the service attribute storage unit 111 stores the content ID and the content of the browser content Cb in the service attribute information Isp as shown in FIG. Write version and. That is, the service attribute information I sp i has a browser content designation information column composed of a column representing the content ID and a column representing the content version.
- the browser content specification information is specified for each service, and thereby, the browser content Cb (Cbi) can be determined from the content.
- the service attribute information I sp in which the content ID of the browser content C b i and the content purge are written is identified as the service attribute information I sp i.
- the specification of the browser content C bi is not performed by the browser content flag of the content header He Bi, but rather by the content header applicator 111 i. This is done by selecting the content.
- Fig. 17 shows an example of the content header HcBi. Since the browser content C bi is not specified by the browser content flag B fi:, the content of the browser content flag B f 1 g is added to the content header H cbi. Does not exist. Also, on the content header, it is not possible to distinguish between service content C s and browser content C b. In this example, in the sense that a human reads a character string and recognizes the meaning, is it possible to recognize whether or not the browser content is Cb by the line of the content name? However, it is not recognized at the level of the transmitter 110 and the non-storage-type receiver 130.
- non-storage type receiving apparatus 130 Next, the operation of non-storage type receiving apparatus 130 according to the present embodiment will be described.
- the operation of activating the browser content Cb included in the received content C by the non-storage type receiving device 730 is based on the point that the service attribute information Isp is changed to Ispi. Except that the target content C has been changed to the browser content C bc, the first implementation described with reference to the flow chart already described with reference to FIG. 9 has been described. Since the operation is basically the same as that of the non-storage type receiving apparatus 130, the description is omitted.
- the non-storage type reception system 30 has the same configuration as that in the non-storage type broadcasting system 100, but the stored program is stored. The operation is slightly different because the program code data is different. Therefore, referring to the flowchart shown in FIG. 18, the browser content by non-storage type receiving apparatus 130 according to the present embodiment will be described.
- the update operation of C b will be described. As shown in FIG. 18, the update operation of the browser content Cb in the present embodiment is based on the flowchart shown in FIG. 10, in which step S608 is replaced by step S608. Replaced by 101 and S1402.
- step S1401 based on the content C demodulated in step S601 (i.e., Cn) and the separated content header Hc.
- the browser content designation information is extracted by referring to the service attribute information Ispi. Be done.
- step S1402 content C having a content ID and a content version of the browser content designation information extracted in step S1401 (browser content C) bi) is searched and selected in the accumulator 133. Then, after the selected content C is set as the browser content Cbi, the process proceeds to the above-described step S604. On the other hand, as a result of the search, if the corresponding content C (browser content Cbi) is not selected, the process returns to step S601.
- the specification of the browser content C bi is performed by the content header applicator 111 i. For this reason, if the content header applicator i 1 2 i is properly managed, the browser content C bi may be specified in duplicate, or the content C of another service may be assigned. It is possible to prevent erroneous designation as browser content C bi. As described above, in the present embodiment, the content transmitter 11 for transmitting the main body of the content constituting each service
- the browser identification information Bid that designates the browser content body DCb from a plurality of content body powers as a browser content finger ML m information common to all services
- a non-storage type that determines that the content C is a browser content C bi based on the browser attribute storage unit 111 and the browser content specification information that is sent out while being included in the sex information I s ⁇ i
- Providing the receiving device 130 makes it possible to realize a non-storage type broadcasting system 100 in which the distinction between the browser content C bi and the service content C s is guaranteed.
- the browser content C bi is designated by the control content designation information common to a plurality of services, and the browser content designation information is designated by the content.
- the browser content designation information is designated by the content.
- no matter how the contents of the three-content enclosure, no matter what the contents of the browser it is illegal to specify the browser content Cb for another service. And can be banned.
- the browser content C b specified information is operated under the control of a contracted broadcaster instead of each service provider, incorrect information may be obtained between multiple service providers. It is possible to prevent the specification of a special browser content Cb.
- the non-storage type broadcasting system 1500 according to the present example has the non-storage type broadcasting system shown in FIG. Transmission device 15 1 0, transmission line
- the transmitting device 1501 is the same as the transmitting device 110 of the non-storage type broadcasting system 100 except that a content ID space manager 1581 is added.
- the content ID space manager 1501 manages, for each service, the range (space) of the value of the content ID of the content belonging to the service, and performs the function of the service. Specify user content C bs.
- the content ID space is, for example, if the content ID is between 100 and 199, the service ID is S1 and the content is between 200 and 299. If the service ID is between S3 and S3, the service ID is between S3 and S3.
- Content ID space manager 15501 defined by convention that the content of S3 is browser content Cb (Cbc) if it is between 0 and 99 Generates the content space definition CSD and outputs it to the content header applicator 1 12. Based on the content space definition CSD, the content header applicator 1 1 2 passes through the content transmitter 1 1 4 via the content storage 1 1 3 a, 1 1 3 b, And the content body D c (D c B s) supplied from each of the content headers He and H c (B c s) Rewrites the value of the content ID item to the value of the content ID that matches the specified content ID space.
- FIG. 2 shows an example of the content space definition CSD.
- the content V space definition CSD includes a column indicating the range of the content ID, and information for defining the content space.
- content in which the content ID is freely set in the range from 0 to 99 is produced and stored in each content storage.
- service content CS which is the content of service S1
- the same conversion is performed on the content ID embedded in the content for reference to other content.
- Figure 22 shows an example of the configuration of the browser content C bs that has been replaced by the content ID space manager 1501.
- the content ID is 01, which is included in the range of 0 to 999 defined as the range of the content ID of the browser content Cb.
- the content ID space manager 1501 adds information for defining the content ID space to the service attribute information stored in the service attribute information storage unit 111.
- FIG. 20 shows an example of the service attribute information Isps.
- the service attribute information Isps has the same contents as the service attribute information Isp according to the first embodiment shown in FIG. That is, the activation operation of the browser content C bs according to the present embodiment is based on the point that the service attribute information I sp has been changed to I sps and the content C of the object is the browser content. Except for the point that Cbs is changed, the operation is basically the same as that of the first embodiment described with reference to FIG. 9, and therefore the description is omitted.
- step S1801 based on the content C (Cn) demodulated in step S601 and the separated content header Hc. And the selected service, and the content ID is within the range of the browser content C bs specified by the service attribute information Isps. The contained content c is searched. Then, when the corresponding content C is found, the process proceeds to the next step S602. On the other hand, if the corresponding content C is not found, the process returns to step S601 described above.
- the non-storage type broadcasting system 1500 manages the space of the content ID, and the content having the content ID having the special value specified by this management.
- any content C can be used. Even if it is stored in the storage unit 113, it is prohibited to illegally specify the browser content Cb for another service and execute it in the non-storage type receiver 130. it can.
- the content ID space of the browser content Cb is assumed.
- the range in advance it is possible to prevent illegal specification of the browser content Cb among a plurality of service providers. It is sufficient to use the field of the content ID, and there is no need to prepare a new field in the content header or the like. And there is little change in the content reception of the conventional non-storage type receiver. The part can be easily reused.
- the signal format of the broadcasting standard must be satisfied for the following reasons. Is necessary or necessary.
- the browser can be received simultaneously with the content.
- the browser is sent on a different channel from the channel on which the TV program (content) is being broadcast. For this reason, at times such as late at night when no content is being received, a channel for turning on the browser is received and the browser is replaced.
- the browser at the time of receiving the content, the browser receives the same broadcast channel in a situation that is exactly what it wants. It can receive the browser required for gusama content.
- the transmission format of the browser is the same as the content, it means that there is only one transmission protocol between the browser and the content.
- a software that receives a certain protocol In order to execute the protocol stack, the ROM capacity for storing the programs necessary for the processing of each protocol and the RAM capacity for execution are required. In the present invention, since there is only one protocol, the increase in the ROM capacity and the RAM capacity may be very small even in comparison with a receiving apparatus that cannot update the browser at all. Also, since an overhead head for switching the protocol is not required, browser reception and content reception can be performed simultaneously at the same CPU processing speed.
- execution timing of content reception and browser reception is included in the content from the transmission side. It is completely controlled by the timing sent by the browser. It is possible to prevent the load on the receiver from unnecessarily increasing due to the control of the transmitting side such as not transmitting the content while transmitting the browser. In addition, by transmitting the browser necessary for presenting specific content at an appropriate timing, the appropriate browser is always received when the content is received. This can be guaranteed by control on the broadcast side, and this control does not require computational resources on the receiver side.
- the present invention can be executed only by transmitting data in one direction from the transmitting device to the receiving device, so that a separate communication line is required. It can be implemented without the need for a communication infrastructure capable of transmitting some information to the sending device by means of, for example. This means that even if there are 100,000 receivers and it is necessary to replace the browser at the same time, the transmitter will release the necessary information. It may be transmitted by transmission. Therefore, it is relatively easy to implement because there is no need to prepare a server or communication line to accept browser transmission requests from several hundred thousand receivers. INDUSTRIAL APPLICABILITY As described above, the present invention provides a non-storage type in which a presentation necessary for a user to view desired content in a view ⁇ is automatically provided to the user in real time. Useful for information service systems.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Information Transfer Between Computers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03736013A EP1513068B1 (en) | 2002-06-05 | 2003-06-04 | Control content transmission method and streaming broadcasting system |
JP2004512001A JP4221361B2 (ja) | 2002-06-05 | 2003-06-04 | 制御コンテンツ伝送方法および非蓄積型情報サービスシステム |
US10/516,501 US20050216945A1 (en) | 2002-06-05 | 2003-06-04 | Control content transmission method and streaming broadcasting system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-164811 | 2002-06-05 | ||
JP2002164811 | 2002-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003104998A1 true WO2003104998A1 (ja) | 2003-12-18 |
Family
ID=29727578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/007058 WO2003104998A1 (ja) | 2002-06-05 | 2003-06-04 | 制御コンテンツ伝送方法および非蓄積型放送システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050216945A1 (ja) |
EP (1) | EP1513068B1 (ja) |
JP (1) | JP4221361B2 (ja) |
CN (1) | CN100386747C (ja) |
WO (1) | WO2003104998A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3432512B1 (en) * | 2006-02-22 | 2020-11-25 | BlackBerry Limited | Apparatus, and associated method, for facilitating delivery and processing of push content |
US8561109B2 (en) * | 2006-04-03 | 2013-10-15 | Alcatel Lucent | Method and system for aggregating TV program information from different live TV feeds |
JP4809433B2 (ja) | 2006-06-19 | 2011-11-09 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システム、移動通信方法、配信サーバ、無線回線制御局及び移動局 |
Citations (4)
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JP2001274788A (ja) * | 2000-01-20 | 2001-10-05 | Internatl Business Mach Corp <Ibm> | ウェブ同報通信サービスを使用したディジタル・コンテンツの配布 |
JP2001306437A (ja) * | 2000-03-09 | 2001-11-02 | Ateon Networks | ライブおよびストリーミングメディア内容を、追加のソフトウェアまたはプラグインを用いずにウェブクライアントのブラウザを通じてオンデマンドに再生するための適応メディアストリーミングサーバ |
WO2001095533A1 (fr) * | 2000-06-02 | 2001-12-13 | Matsushita Electric Industrial Co., Ltd. | Systeme fournisseur d'informations et dispositif a cet effet |
JP2002132607A (ja) * | 2000-06-19 | 2002-05-10 | Easy Systems Japan Kk | アーティストと小売業者とファンとの関係を提供する方法及びそのプログラム |
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WO1995034170A1 (en) * | 1994-06-08 | 1995-12-14 | Futurevision Of America Corp. | Interactive broadband multimedia system |
US5659539A (en) * | 1995-07-14 | 1997-08-19 | Oracle Corporation | Method and apparatus for frame accurate access of digital audio-visual information |
JP3490235B2 (ja) * | 1995-12-11 | 2004-01-26 | フォン・ドット・コム,インコーポレーテッド | 携帯電話機等の双方向データ通信デバイスとコンピュータとの間の通信のための双方向データ通信システム及びそこで使用される双方向通信デバイスとその使用方法 |
US6526144B2 (en) * | 1997-06-02 | 2003-02-25 | Texas Instruments Incorporated | Data protection system |
US20020116708A1 (en) * | 2000-12-11 | 2002-08-22 | Morris Richard M. | User interface for a streaming media client |
US20030066091A1 (en) * | 2001-10-03 | 2003-04-03 | Koninklijke Philips Electronics N.V. | Business models, methods, and apparatus for unlocking value-added services on the broadcast receivers |
US20030120541A1 (en) * | 2001-12-21 | 2003-06-26 | Siann Jonathan I. | Storage and delivery of electronic media content with advertising |
-
2003
- 2003-06-04 WO PCT/JP2003/007058 patent/WO2003104998A1/ja active Application Filing
- 2003-06-04 JP JP2004512001A patent/JP4221361B2/ja not_active Expired - Fee Related
- 2003-06-04 US US10/516,501 patent/US20050216945A1/en not_active Abandoned
- 2003-06-04 CN CNB03816406XA patent/CN100386747C/zh not_active Expired - Fee Related
- 2003-06-04 EP EP03736013A patent/EP1513068B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001274788A (ja) * | 2000-01-20 | 2001-10-05 | Internatl Business Mach Corp <Ibm> | ウェブ同報通信サービスを使用したディジタル・コンテンツの配布 |
JP2001306437A (ja) * | 2000-03-09 | 2001-11-02 | Ateon Networks | ライブおよびストリーミングメディア内容を、追加のソフトウェアまたはプラグインを用いずにウェブクライアントのブラウザを通じてオンデマンドに再生するための適応メディアストリーミングサーバ |
WO2001095533A1 (fr) * | 2000-06-02 | 2001-12-13 | Matsushita Electric Industrial Co., Ltd. | Systeme fournisseur d'informations et dispositif a cet effet |
JP2002132607A (ja) * | 2000-06-19 | 2002-05-10 | Easy Systems Japan Kk | アーティストと小売業者とファンとの関係を提供する方法及びそのプログラム |
Non-Patent Citations (1)
Title |
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See also references of EP1513068A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1669008A (zh) | 2005-09-14 |
EP1513068A4 (en) | 2006-06-07 |
US20050216945A1 (en) | 2005-09-29 |
EP1513068B1 (en) | 2012-07-18 |
EP1513068A1 (en) | 2005-03-09 |
CN100386747C (zh) | 2008-05-07 |
JP4221361B2 (ja) | 2009-02-12 |
JPWO2003104998A1 (ja) | 2005-10-13 |
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