CN101395859B - Gateway device - Google Patents
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- CN101395859B CN101395859B CN2007800074287A CN200780007428A CN101395859B CN 101395859 B CN101395859 B CN 101395859B CN 2007800074287 A CN2007800074287 A CN 2007800074287A CN 200780007428 A CN200780007428 A CN 200780007428A CN 101395859 B CN101395859 B CN 101395859B
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Abstract
A gateway device is provided to connect an IEEE1394 network with an IP network, wherein a player device connected with the IP network automatically detects and operates an AV device connected with the IEEE1394 network and the player device can watch and hear contents stored in the AV device. The gateway device connects a network with which an AV/C installed IEEE1394 device is connected with a network with which a player device in conformity of the UPnP is connected; and is provided with a converting means for converting plug-and-play processing of the IEEE1394 device to each step of plug-and-play of the UPnP, a converting means for converting an action of the UPnP AV to an AV/C command of the IEEE1394 device, and a stream transfer means for transferring stream data transmitted from the IEEE1394 to the IP network.
Description
Technical field
The present invention relates to gateway apparatus, be particularly related to the gateway apparatus that is used for following technology, this technology will have been installed AV/C, and (Audio Video Control: (Universal Plug and Play: UPnP) equipment detects and controls IEEE1394 equipment audio video control), and will spread via the dynamic image that the IEEE1394 network is sent and deliver to IP network as virtual UPnP.
Background technology
In the past, as the network interface of AV equipment, used IEEE1394 mostly, but along with popularizing of personal computer, internet, the AV equipment of the interface of the procotol (Internet Protocol is hereinafter to be referred as IP) of use Ethernet (Ethernet, registered trade mark) etc. increases.In addition, in order to couple together between the network with different agreements such as IP and IEEE1394, gateway apparatus is configured in constitutes function between the network.For example, in order to connect IP network and IEEE1394 network, behavior command (action) to the UPnP corresponding with the order of the AV/C of IEEE1394 equipment defines, gateway apparatus is changed behavior command and the AV/C order of UPnP, by the UPnP control point (UPnP Control Point) that is connected with IP network the AV equipment that is connected with the IEEE1394 network is controlled (for example, with reference to patent documentation 1) thus.
In addition, gateway apparatus generates the webpage corresponding with the subelement of AV/C, controls the equipment (for example, with reference to patent documentation 2) that is connected with the IEEE1394 network by the Web browser that is installed on the personal computer that is connected with IP network etc. thus.
Patent documentation 1: TOHKEMY 2003-46535 communique
Patent documentation 2: TOHKEMY 2005-94683 communique
But, be converted in the mode of AV/C order at behavior command UPnP, have only the AV/C order to operate by the UPnP control point on the IP network, therefore there is following problem: promptly the time, utilize these players can not audiovisual to be stored in audio content and video content in this AV equipment by the AV equipment on the player operation IEEE1394 of the personal computer on the IP network etc.
In addition, exist to need the newly-generated UPnP control point that be appreciated that the AV/C order, the UPnPAV that has therefore adopted standard specification for example can not operate problem with audiovisual according to the player of DLNA standard.
In addition, in the mode of using Web browser, existence can't utilize the problem of the direct audiovisual IEEE1394 of the player on Web browser personal computer equipment.
In addition, in order to utilize player audiovisual AV data, when the server that connects by network is read the AV data, need be from the response time of the server that connects the destination, therefore the user need to begin standby several seconds or tens of seconds from the power supply that inserts transcriber, relatively also there are the relatively poor problem of usability in these and video tape recorder in the past.
Summary of the invention
The present invention finishes in order to address the above problem, its purpose is to provide a kind of gateway apparatus that is used to connect IEEE1394 network and IP network, this gateway apparatus can be by personal computer of being connected with IP network etc. the AV equipment that is connected with the IEEE1394 network of the automatic detection of player device and operation, and can utilize the player device audiovisual to be stored in contents such as audio frequency in the AV equipment, video.
The present invention is a kind of gateway apparatus, and it has: first communication unit, and it is connected with the 1st network that moves in accordance with being used in the IP agreement of internet, and communicates with the equipment that is connected with described the 1st network; The second communication unit, it is connected with the 2nd network, and communicates with the equipment that is connected with described the 2nd network; The identifier management unit, it exports the IP identifier of described the 1st network; Corresponding unit, it starts the program corresponding to the equipment that is connected with described the 2nd network, and described program and described IP identifier are mapped; The identifier notification unit, it notifies described IP identifier to the equipment that is connected with described the 1st network; The command information notification unit, it can be in the command information of described the 1st network execution to the equipment notice that is connected with described the 1st network; The command conversion unit, its command conversion with described the 1st network is the order of described the 2nd network; And stream transmits the unit, it will be converted to the transportation protocol of described the 1st network and be sent to described the 1st network from the flow data that described the 2nd network sends by the transportation protocol of described the 2nd network, this gateway apparatus is according to the instruction from the equipment that is connected with described the 1st network, operate the equipment that is connected with described the 2nd network, and transmit the flow data that is stored in the equipment that is connected with described the 2nd network to the equipment that is connected with described the 1st network.
The present invention is a kind of gateway apparatus, and it has: be connected with the 1st network, and first communication unit that communicates with the equipment that is connected with described the 1st network; Be connected with the 2nd network, and the second communication unit that communicates with the equipment that is connected with described the 2nd network; Export the identifier management unit of the identifier in described the 1st network; Starting is corresponding to the program of the equipment that is connected with described 2 networks, and the corresponding unit that described program and described identifier are mapped; With the command conversion of described the 1st network is the command conversion unit of the order of described the 2nd network; And the stream that the flow data that will send from described the 2nd network by the transportation protocol of described the 2nd network is converted to the transportation protocol of described the 1st network and is sent to described the 1st network transmits the unit, this gateway apparatus is according to the instruction from the equipment that is connected with described the 1st network, operate the equipment that is connected with described the 2nd network, and at the equipment that is connected with described the 1st network, transmission is stored in the flow data in the equipment that is connected with described 2 networks, so can play following effect: the AV equipment that the automatic detection of player device that can be by personal computer of being connected with IP network etc. and operation are connected with the IEEE1394 network, and can utilize the player device audiovisual to be stored in audio frequency in the AV equipment, contents such as video.
Description of drawings
Fig. 1 is the structure chart of the gateway apparatus of embodiments of the present invention 1.
Fig. 2 is the figure of action step that the UPnP of embodiments of the present invention 1 is shown.
Fig. 3 is the figure of framework that the UPnP AV of embodiments of the present invention 1 is shown.
Fig. 4 is the figure of reproduction flow process of pull-type (pull type) that the framework of the UPnP AV that has used embodiments of the present invention 1 is shown.
Fig. 5 is the figure of command sending method that the IEEE1394 equipment of embodiments of the present invention 1 is shown.
Fig. 6 is the figure that the method that the response of the IEEE1394 equipment of embodiments of the present invention 1 receives is shown.
Fig. 7 is the figure that the notion of AV/C of the present invention unit and subelement is shown.
Fig. 8 is the structure chart of software of the gateway apparatus of embodiments of the present invention 1.
The figure of the software operation order when Fig. 9 is the addressing (addressing) that the gateway apparatus of embodiments of the present invention 1 is shown.
The figure of the software operation order in announcement (advertising) action when Figure 10 is the discovery (discovery) that the gateway apparatus of embodiments of the present invention 1 is shown.
Figure 11 is the figure of the software operation order in the hunting action when discovery of gateway apparatus of embodiments of the present invention 1 is shown.
Figure 12 is the figure of the software operation order the when description of gateway apparatus of embodiments of the present invention 1 is shown.
Figure 13 is the figure of the software operation order the when content retrieval of gateway apparatus of embodiments of the present invention 1 is shown.
The figure of the software operation order when Figure 14 is the preparation of server that the gateway apparatus of embodiments of the present invention 1 is shown, renderer (renderer).
Figure 15 is the figure of stream that the gateway apparatus of embodiments of the present invention 1 the is shown software operation order when reproducing.
Figure 16 is the figure of stream that the gateway apparatus of embodiments of the present invention 1 the is shown software operation order when transmit finishing.
Figure 17 is the figure of stream that the gateway apparatus of embodiments of the present invention 2 the is shown software operation order when reproducing.
Figure 18 is the structure chart of variation that the gateway apparatus of embodiments of the present invention 3 is shown.
Figure 19 is the key diagram that flows of the data of reproducing in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 20 is the flow chart of the action that stops to handle in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 21 is the flow chart of action of the reproduction processes in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 22 is the flow chart of action of the Synchronous Processing in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 23 is the key diagram of data arrangement of buffer storage B1121, buffer storage A1120 in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 24 is the key diagram of switching point in the gateway apparatus of explanation embodiments of the present invention 3.
Figure 25 is the flow chart of the action that stops to handle in the gateway apparatus of explanation embodiments of the present invention 4.
Figure 26 is the structure chart of structure that the gateway apparatus of embodiments of the present invention 4 is shown.
Figure 27 is the key diagram of compression ratio of the data in the gateway apparatus of explanation embodiments of the present invention 4.
Embodiment
Fig. 1 is the structure chart that the system configuration of the gateway apparatus of using embodiments of the present invention 1 is shown.
UPnP-IEEE1394 gateway 2 as the gateway apparatus of embodiments of the present invention 1 has: CPU 10, stored program ROM 11, the RAM 12, LAN controller 13 and the IEEE1394 controller 14 that use at the storage area of working region that is used for executive program and data etc.
UPnP-IEEE1394 gateway 2 is connected with IP (Internet Protocol procotol) network 4 by LAN controller 13.This IP network 4 does not rely on physical layer, so can use WLAN such as the wired lan of Ethernet (Ethernet, registered trade mark) etc. or IEEE802.11a/b/g as the standard of physical layer yet.In this case, use and the corresponding LAN controller 13 of this physical layer.
Be connected with on the IP network 4 and the corresponding UPnP of UPnP (being designated hereinafter simply as " UPnP ") standard control point (UPnP Control Point) 310.UPnP control point 310 for example is made of the personal computer of the application program that the function that is used to realize UPnP control point 310 has been installed.
In addition, be connected with on the IP network 4 and the corresponding UPnP media renderer of UPnP standard (UPnP Media Renderer) 312.UPnP media renderer 312 is used to reproduce the content that obtains from home network, is the equipment of function that mainly comprises the reception of reproduction of content such as the demonstration of carrying out video, the output of audio frequency and stream.
In addition, UPnP-IEEE1394 gateway 2 is connected with IEEE1394 network 5 by IEEE1394 controller 14.Be connected with video information device 3a, 3b on the IEEE1394 network 5.In addition, in Fig. 1, be connected with two video information device 3a, 3b, but in fact in the critical field of IEEE1394, can connect 1 or many video information devices 3.
UPnP-IEEE1394 gateway 2 of the present invention plays a role as the middle device that connects 5 on IP network 4 and IEEE1394 network, by the video information device 3a, the 3b that do not have the UPnP function on the 310 operation IEEE1394 networks 5 of the UPnP control point on the IP network 4.
Fig. 2 is the figure that the action step of UPnP is shown.
As shown in Figure 2, UPnP has 6 kinds of action step.
Addressing S301 is the initial action of UPnP, is the action that the UPnP equipment that identifies oneself with IP network 4 obtains the IP address automatically.In order to realize this action, use DHCP (Dynamic Host Configuration Protocol is hereinafter to be referred as DHCP) basically.Under this IP network 4 and the not corresponding situation of DHCP, use AutoIP.The equipment that has obtained the IP address by addressing S301 forwards next action to, promptly finds (discovery) S302.
Find that S302 is the action that is used to detect the equipment on the IP network 4.In finding S302, following two kinds of actions are arranged: the equipment that newly appends is announced the announcement action of (advertising) to UPnP control point 310; The hunting action that ask for retrieval facility at the UPnP control point 310 of newly appending.The both uses SSDP (Simple Service Discovery Protocol is designated hereinafter simply as " SSDP ") as its means.
The former is that the equipment that is appended carries out multicast to the notice message that is used to announce.The latter is the message that 310 multicasts of UPnP control point are used to search for, and corresponding equipment is to UPnP control point 310 passback search response message.
Describing 303 is to be used for the action that 310 detected equipment obtain details from the UPnP control point.UPnP control point 310 can use the uniform resource address of being recorded and narrated in notification message or the search response message (Uniform Resource Locator is designated hereinafter simply as " URL ") to obtain the information of each equipment.This facility information is recorded and narrated with the form of extend markup language (eXtensible MarkupLanguage is hereinafter to be referred as XML), is the device description of having put down in writing model name, sequence number, manufacturer's title, information on services etc.In device description, recorded and narrated the URL of the information of the service that is used to obtain to use this equipment, the service describing of the vaild act instruction that service provides has been used these URL to obtain to have put down in writing in UPnP control point 310.Service describing is is also recorded and narrated with the form of XML.Describing for 303 moment of finishing, the means of controlling object equipment are learnt at UPnP control point 310.
Control S304 is the action of UPnP control point 310 working control equipment.UPnP control point 310 is carried out the behavior command request according to the behavior command, service, the parameter of each behavior command and the tabulation of independent variable that are documented in the service describing to equipment.As the unit that is used to carry out the behavior command request, use Simple Object Access Protocol (Simple Object Access Protocol is hereinafter to be referred as " SOAP ").UPnP control point 310 uses SOAP to send the control command of recording and narrating with the XML form to equipment.Equipment carries out institute's requested service, passes the result of behavior command back to UPnP control point 310.
Event handling (eventing) S305 is the action that is used for the state variation of UPnP control point 310 checkout equipments.Under the situation that the state variable of the service of equipment self has changed, equipment is notified the UPnP control point of subscribing 310.As these means, use general purpose event notification architecture (Generic Event Notification Architecture is designated hereinafter simply as " GENA ").Message is recorded and narrated with the XML form.
Demonstration (presentation) S306 is used to use Web browser to carry out the operation of equipment and the action of setting.Under object-based device has situation based on the user interface function of HTML (Hyper Text Markup Language: hereinafter to be referred as HTML), can be by the demonstration URL of visit record in device description, show the demonstration picture by Web browser, can use this picture to carry out the operation of equipment.
In the UPnP standard, about certain specific device type, the definite interface that will install and function are as device control protocol (Device Control Protocol: be designated hereinafter simply as " DCP ").DCP as AV equipment is media server and media renderer.
Fig. 3 is the figure that the framework of UPnP AV is shown.
UPnP AV framework is the model of UPnP control point 310 control media servers 311 and media renderer 312.
As service, media renderer 312 comprises plays up control (Rendering Control) 316, connection manager (Connection Manager) 314 and AV transmission (AV Transport) 315.
Play up the service that control 316 provides the behavior command collection, the behavior instruction set be used to make UPnP control point 310 can control not shown renderer (equipment that comprises media renderer 312) how to reproduce content.By using these behavior commands, the volume of brightness, contrast, audio frequency of video image and quiet etc. control can be carried out in UPnP control point 310.
Fig. 4 illustrates the pull-type reproduction flow process of the framework that has used UPnPAV.
In step S310, carry out the discovery of equipment.This discovery S302 and description S303 by UPnP carries out.After finishing this step S310, media server 311 and media renderer 312 can be discerned and control in UPnP control point 310.
In step S311, carry out the retrieval of content.In this step S311, the service of the contents directory 313 of media server 311 is used at UPnP control point 310, carries out the retrieval of content.At this moment, UPnP control point 310 sends the message of browsing behavior command or search behavior instruction by SOAP communication to media server 311.As answer, media server 311 is to the information of hierarchical structure, transportation protocol data and the data format of UPnP control point 310 passback contents.
In step S312, UPnP control point 310 uses connection manager 314 services of media renderer 312 to obtain the transportation protocol that media renderer 312 supported and the information of form after receiving answer.At this moment, UPnP control point 310 sends the message of GetProtocolInfo behavior commands to media renderer 312, and as answer, media renderer 312 comprises the information of the tabulation of the transportation protocol supported and form to 310 passbacks of UPnP control point.Thereafter, UPnP control point 310 is according to the transportation protocol and the information of form and the information that obtains in step S311 that obtain herein, agreement and data format are compared, determine the combination that to use the both sides of media server 311 and media renderer 312.
In step S313, connection manager 314 services are used at UPnP control point 310, and to the both sides of media server 311 and media renderer 312, notice has generated situation about being connected based on the transportation protocol of being determined by step S312 with form.At this moment, UPnP control point 310 sends the message of PrepareForConnection behavior command to media server 311.Because media server 311 is pull-type, so there is no need especially to UPnP control point 310 back informations as answer.
In addition, UPnP control point 310 sends the message of PrepareForConnection behavior command to media renderer 312, as answer, media renderer 312 is to UPnP control point 310 passback AV Transport Instance (AV transmits example) ID or Rendering Control Instance (playing up control examples) ID.
In step S314,,, transmit the information of which content to media renderer 312 notices so use AV transmission 315 services because UPnP control point 310 is pull-type.At this moment, UPnP control point 310 sends the message of Set AV Transport URI behavior command to media renderer 312.
In step S315,,, play, stop, searching for the instruction of the reproducing control of reality such as (Play, Stop, Seek) to media renderer 312 so use AV transmission 315 services because UPnP control point 310 is pull-type.At this moment, UPnP control point 310 sends the message of for example playing behavior command to media renderer 312.Media renderer 312 is according to the URL that is illustrated in the content that receives among the step S314, to the content distributed transmission request of media server 311.It is different and different that the content of this transmission request transmits employed agreement according to content.For example, under the situation of using HTTP, use HTTP to obtain (HTTP-GET) mode.As the result of above processing, the beginning reproduction of content.In addition, end under the situation of content playback wanting, send and stop behavior command.
Step S316 is the volume/image quality regulating step that volume is regulated and image quality is regulated that carries out renderer in reproduction.In this step S316, use control 316 services of playing up.At this moment, for example carry out situation that volume regulates and be UPnP control point 310 and send the message of SetVolume behavior commands to media renderer 312, as its as a result volume changed.After the transmission of content is finally finished, forward to and transmit completing steps S317.
Step S317 is the transmission end step of being carried out after the transmission of content is finally finished.In this step, connection managers 314 services are used at UPnP control point 310, carry out the end process of media server 311 and media renderer 312 connection between separately.At this moment, UPnP control point 310 sends the message of ConnectionComplete behavior command to media renderer 312.Next, UPnP control point 310 sends the message of ConnectionComplete behavior command equally to media server 311.
Used the pull-type a series of reproduction of UPnPAV framework to finish thus.
Next, the exchange to the order of the AV/C between the equipment that utilizes the IEEE1394 connection describes.In addition, the AV/C order is to be used for Long-distance Control to utilize IEEE1394 and the order system of equipment connected to one another, and the equipment that the equipment of controlling side is called controller 20, Be Controlled side is called target 21.Fig. 5 and Fig. 6 illustrate the notion of exchange of the AV/C order of 21 of controller 20 and targets.
The exchange of AV/C order is to use to be undertaken by the defined function control protocol of IEC61883-1 (Function Control Protocol is designated hereinafter simply as " FCP ").
As shown in Figure 5, issue under the situation of the order that is used to control to target 21 at slave controller 20, by command register 22 issue of controller 20 in being built in target 21 based on the asynchronous transmission of IEEE1394 be asynchronous communication write affairs (write transaction), abide by the writing of command frame of the frame format of FCP.Its result can receive the AV/C order that slave controller 20 sends for target 21, and carries out the action corresponding to order.
On the contrary, as shown in Figure 6, under the situation of the result's who is used for notification action from target 21 to controller 20 passback etc. response, same response register 23 issues in being built in controller 20 are based on the affairs of writing of asynchronous communication, abide by the writing of response frame of the frame format of FCP.
Fig. 7 illustrates in the AV/C order by the figure of the model of modeled video tape recorder.
For with the AV device modeling, the notion of unit and subelement has been used in the AV/C order.The AV equipment self is represented in the unit.1 AV equipment is corresponding to 1 AV/C unit.Subelement be with the functional modelling of AV equipment equipment.For example, the subelement corresponding to the video recording/representational role of tape is defined as tape recorder/player subelement (Tape Recorder/Player Subunit).In addition, be prescribed as tuner subelement (Tuner Subunit) corresponding to the subelement that receives broadcast capability.
As shown in Figure 7, under the situation of the video tape recorder of built-in tuner, can be expressed as and in unit 30, comprise tape recorder/player subelement 31 and tuner subelement 32.These subelements be with functional modelling structure, therefore respectively according to each subelement, definition and the corresponding AV/C order of function.For example, under the situation of the reproduction operation of video tape recorder shown in Figure 7 being carried out tape, use the reproduction order that is contained in tape recorder/player subelement 31.
Next, UPnP-IEEE1394 gateway 2 moves as the acting server (delegation server) that connects between IP network 4 and the IEEE1394 network 5, operate video information device 3a, the 3b function, that be connected with the IEEE1394 network that does not have UPnP by the UPnP control point on the IP network 4 310, to describing by the step of the PC audiovisual on the IP network 4 via IEEE1394 network 5 contents that send, video information device 3a, 3b.
Fig. 8 illustrates the example that is used to make the software configuration that UPnP-IEEE1394 gateway 2 moves as acting server.
IEEE1394 bus control and treatment 324 is the software with following function: the state that monitors IEEE1394 equipment, except connection/cut-out information of Authorization Manager 326 being notified this IEEE1394 equipment, also deliver the AV/C order data that receives from IEEE1394 equipment, perhaps conversely the AV/C order data that receives from UPnP simulation process 325 is sent to IEEE1394 equipment to UPnP simulation process 325.
IP address management device 323 is the software with following function: be used for by 325 pairs of UPnP simulation process by each IEEE1394 devices allocation IP address of emulation.
It is the software with following function that stream handles 501: send the video stream data that receives via IEEE1394 storehouse 322 via tcpip stack 500 on IP network 4.
Next, the action to the software of the UPnP-IEEE1394 gateway 2 among the addressing S301 of UPnP describes.Fig. 9 is the figure that the sequence of movement of addressing S301 is shown.
In step S320, the power connection of IEEE1394 equipment 3 or new when being connected, generation bus reset (Bus Reset), IEEE1394 bus control and treatment 324 these situations of detection with IEEE1394 network 5.
In step S321, according to this situation, 324 pairs of proxy managers 326 of IEEE1394 bus control and treatment connect notice, newly are connected with IEEE1394 network 5 with notice IEEE1394 equipment 3.
In step S322, proxy manager 326 receives this notice, starting UPnP simulation process 325.Herein in all afterwards UPnP step of the UPnP simulation process 325 of Qi Donging, all the time corresponding to the IEEE1394 equipment 3 that becomes the notice beginning.Be connected with at IEEE1394 network 5 under the situation of many IEEE1394 equipment 3, starting and each IEEE1394 equipment 3 is UPnP simulation process 325 one to one.
In step S323, the 325 pairs of IP address management devices of UPnP simulation process 323 that started carry out the IP address and obtain request.
In step S324, the address is notified determined IP to UPnP simulation process 325 in the IP address that IP address management device 323 is selected IEEE1394 equipment 3 virtual assigned.The selection of IP address is such with DHCP, can use the mode of the address in the table or the mode of AutoIP of being defined in of distributing.
Next, the software operation to the UPnP-IEEE1394 gateway 2 under the announcement action situation of the discovery S302 that carries out UPnP describes.Figure 10 shows and finds in the S302, the order the when equipment that newly appends is announced action to UPnP control point 310.In this embodiment, there are 2 in UPnP control point 310a, 310b on IP network 4 situation is shown.
In step S330, use SSDP multicast on IP network 4 to announce discovery (Discovery) message of (Advertizing) with specific I EEE1394 equipment 3 corresponding UPnP simulation process 325.When UPnP control point 310a and UPnP control point 310b received this message, as a result of, UPnP control point 310a and UPnP control point 310b were identified as UPnP equipment to IEEE1394 equipment 3.
The software operation of the UPnP-IEEE1394 gateway 2 during next, to the hunting action of the discovery S302 that carries out UPnP describes.Figure 11 is illustrated in and finds in the S302, the order the when hunting action of asking is carried out for retrieval facility in the UPnP control point of newly appending 310.In this embodiment, be illustrated in the situation that has 2 IEEE1394 equipment 3 on the IEEE1394 network 5.
In step S340, the discovery message of SSDP multicast search on IP network 4 is used at UPnP control point 310.Receive this message corresponding to the UPnP simulation process 325a of IEEE1394 equipment 3a with corresponding to the UPnP simulation process 325b of IEEE1394 equipment 3b.
In step S341, UPnP control point 310 is sent the discovery message of response with the corresponding UPnP simulation process of the IEEE1394 equipment 3b 325b of the function of service shown in the condition with the discovery message that is equivalent to search for or equipment.As a result of, UPnP control point 310 is identified as IEEE1394 equipment 3b the UPnP equipment of self searching for.
Next, the software operation of the UPnP-IEEE1394 gateway 2 when carrying out the description S303 of UPnP describes.Order when Figure 12 illustrates the action of the description S303 that carries out UPnP.
In step S350, the URL that record and narrate in notice message or search response message are used at UPnP control point 310, to the UPnP simulation process 325 corresponding with IEEE1394 equipment 3, carry out the request of device description.The agreement that use this moment is HTTP.
In step S351, UPnP simulation process 325 as device description, and sends it to UPnP control point 310 with the facility information of XML form generation about IEEE1394 equipment 3.
In step S352, to have put down in writing in the service list in this device description under the situation of the URL that is used to obtain service describing, 310 pairs of UPnP simulation process in UPnP control point 325 are carried out the request of service describing.
In step S353, UPnP simulation process 325 with the facility information of XML form generation about IEEE1394 equipment 3, as device description, and sends it to UPnP control point 310 at the request of this service describing.
Under the situation of common UPnP equipment, finish the step of description after, can pass through UPnP control point 310 control appliances.
Next, in each step of reproduction of content flow process shown in Figure 4, the actual act of software shown in Figure 8 describes.
At first, the software operation among the content retrieval S311 is described.In this explanation, describe with D-VHS cassette recorder/player that tape recorder/player subelement 31 has been installed example as IEEE1394 equipment 3.In addition, the agreement that is used for the transmission of flow data is example with HTTP.
Figure 13 is the figure that the order of the software operation among the content retrieval S311 is shown.
In step S400, SOAP is used at UPnP control point 310, to UPnP simulation process 325, sends the message that comprises the request of " browsing " or " search " behavior command.
In step S405, corresponding to the UPnP simulation process 325 of IEEE1394 equipment 3 startings,, receive the message that is sent by UPnP storehouse 321.The D-VHS cassette recorder/player can't be read contents list, so receive the UPnP simulation process 325 of message tape is considered as a big content, generates the data of " browsing " or " search " response, by UPnP storehouse 321, sends to UPnP control point 310.
By this step, the information of hierarchical structure, transportation protocol data and the data format of the content that UPnP control point 310 identification IEEE1394 equipment 3 are had.The transportation protocol data of this moment are not the agreements that IEEE1394 equipment 3 is sent via IEEE1394 network 5, but the agreement that can send by 2 pairs of IP network 4 of UPnP-IEEE1394 gateway.Be HTTP in this embodiment.In addition, the information of data format is not the form of IEEE1394 equipment 3 when sending via IEEE1394 network 5 too, but the form of 2 pairs of IP network 4 of UPnP-IEEE1394 gateway when sending.
Next, agreement and data format are checked that the action of software among the S312 describes.
This step is carried out at media renderer 312, and is irrelevant with the action of UPnP-IEEE1394 gateway 2.This step is as common UPnP AV processing execution between UPnP control point 310 and media renderer 312.
Next, the software operation among the preparation S313 of server, renderer is described.Figure 14 is the figure that the software operation order among the preparation S313 of server, renderer is shown.
At first, in step S420, SOAP is used at UPnP control point 310, UPnP simulation process 325 is sent the message that comprises " preparing to connect " behavior command.Corresponding to the UPnP simulation process 325 of IEEE1394 equipment 3 startings,, receive the message that is sent by UPnP storehouse 321.
In step S421,325 pairs of IEEE1394 buses of the UPnP simulation process control and treatment 324 that receives message is carried out connection request.
In step S422, IEEE1394 bus control and treatment 324 sends based on insertion (plug) the setting request that locks (lock) affairs IEEE1394 equipment 3 by IEEE1394 storehouse 322.The IEEE1394 equipment 3 that receives this locking transaction generates the connection of physics.
In step S423, IEEE1394 equipment 3 via IEEE1394 storehouse 322, is set the result to 324 transmissions of IEEE1394 bus control and treatment based on the insertion of locking transaction after connecting generation.
In step S424, IEEE1394 bus control and treatment 324 is that answer is finished in the 325 transmission connections of UPnP simulation process to the transmit leg of AV/C order.
In step S425, receive connect correspondence table that the UPnP simulation process 325 finish answer uses the service of UPnP and AV/C order with the service of UPnP promptly " PrepareF orConnection " behavior command be converted to " CONNECT AV (being connected AV) " of AV/C order, and send to IEEE1394 bus control and treatment 324.
In step S426, IEEE1394 bus control and treatment 324 sends " CONNECT AV " by IEEE1394 storehouse 322 to IEEE1394 equipment 3.
In step S427, after the IEEE1394 equipment 3 that receives this AV/C order generates the connection that the reception that can carry out data between the equipment of self and other sends actually, by IEEE1394 storehouse 322, comprise the AV/C response that generates the result to 324 passbacks of IEEE1394 bus control and treatment.
In step S428, IEEE1394 bus control and treatment 324 is that UPnP simulation process 325 sends the AV/C response that receives to the transmit leg of AV/C order.
In step S429, the service of UPnP simulation process 325 use UPnP and the correspondence table of AV/C response are converted to the response message of UPnP, by UPnP storehouse 321, send to UPnP control point 310.Thus, can receive the transmission content to IEEE1394 equipment 3.
Next, software operation among the content choice S314 is described.
This step is carried out at media renderer 312, and is irrelevant with the action of UPnP-IEEE1394 gateway 2.This step is as common UPnP AV processing execution between UPnP control point 310 and media renderer 312.In the SetAVTransportURI behavior command at this moment, the URI that hands to the content of media renderer 312 is in step S311, uses UPnP simulation process 325 to send to the URL of content of the HTTP at UPnP control point 310.
Next, the action of reproducing software among the S315 is described.Figure 15 is the figure that the software operation order of reproducing among the S315 is shown.
In step S440, SOAP is used at UPnP control point 310, and media renderer 312 is sent the message that comprises the request of " broadcast " behavior command.
In step S441, media renderer 312 is in order to receive the situation of " broadcast " action request, passback response message to UPnP control point 310 notices.
In step S442, media renderer 312 after use HTTP the GET method UPnP-IEEE1394 gateway 2 is sent the request of obtaining of contents.The stream of UPnP-IEEE1394 gateway 2 is handled the GET method of 501 these HTTP of reception.
In step S443, the stream that receives message is handled 501 " broadcasts " that send the AV/C order to IEEE1394 bus control and treatment 324 as playback mode " F.F. (FORWARD) ".
In step S444, IEEE1394 bus control and treatment 324 sends AV/C order " broadcast " as playback mode " F.F. " by IEEE1394 storehouse 322 to IEEE1394 equipment 3.
In step S445, the IEEE1394 equipment 3 that receives this AV/C order " broadcast " by IEEE1394 storehouse 322, comprises the AV/C response of the information that begins content playback to 324 passbacks of IEEE1394 bus control and treatment after the execution reproduction begins to handle.
In step S446, IEEE1394 bus control and treatment 324 promptly flows the AV/C response that processing 501 transmissions receive to the transmit leg of AV/C order.
In step S447, IEEE1394 equipment 3 with the flow velocity of content according to this form such as MPEG2-TS be written into synchronous (Isochronous) packet of IEEE1394, convection current is handled 501 and is sent.Stream is handled 501 and is received this synchronization packets.
In step S448, stream is handled 501 data of taking out the stream format of MPEG2-TS etc. from this packet, is converted to the form of the GET method response of HTTP, sends to media renderer 312.At this moment, for adjust synchronous driving be Isochronous transmit and asynchronous based on HTTP transmission regularly, needs will be stored in any amount from the flow data that synchronization packets is taken out in the buffer storage zone the inside that is formed in RAM12 etc.
Send by 310 pairs of media renderer in UPnP control point 312 comprise " stopping " thus under the situation of the reproduction of the message interrupt flow of behavior command request, the stream of 312 pairs of UPnP-IEEE1394 gateways 2 of media renderer is handled 501 and is cut off the TCP connection, therefore stream processing 501 is necessary by IEEE1394 bus control and treatment 324, IEEE1394 equipment 327 is sent AV/C order " winding (WIND) " " stop ", stop the reproduction of IEEE1394 equipment thus as subfunction.
Next, the software operation that volume/image quality is regulated among the S316 describes.
This step is carried out at media renderer 312, and is irrelevant with the action of UPnP-IEEE1394 gateway 2.This step is as common UPnP AV processing execution between UPnP control point 310 and media renderer 312.
At last, describe transmitting the software operation that finishes among the S317.Figure 16 illustrates to transmit the figure that finishes the sequence of movement of software among the S317.
At first, in step S460, SOAP is used at UPnP control point 310, and UPnP simulation process 325 is sent the message that comprises the request of " TransferComplete " behavior command.Corresponding to the UPnP simulation process 325 of IEEE1394 equipment 3 startings, receive the message that is sent by UPnP storehouse 321.
In step S461, the correspondence table that the UPnP simulation process 325 that receives message is used the service of UPnP and AV/C order with the service of UPnP promptly " TransferComplete " behavior command be converted to " the DISCONNECT AV " of AV/C order, and send to IEEE1394 bus control and treatment 324.
In step S462, IEEE1394 bus control and treatment 324 sends AV/C order " DISCONNECT AV " by the IEEE1394 storehouse to IEEE1394 equipment 3.The IEEE1394 equipment 3 that receives this AV/C order is removed the connection of self.
In step S463, IEEE1394 equipment 3 comprises the AV/C response of the information of removing connection by IEEE1394 storehouse 322 to 324 passbacks of IEEE1394 bus control and treatment.
In step S464, IEEE1394 bus control and treatment 324 is that UPnP simulation process 325 sends the AV/C response that receives to the transmit leg of AV/C order.
In step S465, receive the connections that the UPnP simulation process 325 that connects the releasing answer is further removed physics, so send the connection ending request to IEEE1394 bus control and treatment 324.
In step S466, receive the IEEE1394 bus control and treatment 324 that connects ending request and pass through IEEE1394 storehouse 322, IEEE1394 equipment 3 is sent based on the insertion of locking transaction remove request.The IEEE1394 equipment 3 that receives this message is removed the connection of physics.
In step S467, by IEEE1394 storehouse 322,324 passbacks comprise the locking transaction automatic (lock transaction auto) of the information of having removed physical connection to IEEE1394 bus control and treatment after the IEEE1394 equipment 3.
In step S468, IEEE1394 bus control and treatment 324 is that UPnP simulation process 325 sends the AV/C response that receives to the transmit leg of AV/C order.
In step S469, UPnP simulation process 325 uses the service of UPnP and the correspondence table of AV/C response to be converted to the response message of UPnP, and by UPnP storehouse 321, sends to UPnP control point 310.Thus, the discharged situation of connection of IEEE1394 equipment 3 can be discerned in UPnP control point 310.
This type of gateway apparatus is operated on the IEEE1394 networks 5 by the UPnP control point on the IP network 4 310, the IEEE1394 equipment 3 that does not have the function of UPnP, IEEE1394 equipment 3 utilizes the media player with UPnP media renderer functions of the equipments on the IP network to reproduce the flow data that sends via IEEE1394 network 5, utilize the automatic detection of player device and the video information device that operation is connected with IEEE1394 network 5 of the personal computer be connected with IP network 4 etc., can utilize the player device audiovisual that is connected with IP network 4 to be stored in contents such as audio/video in the video information device thus.
In addition, the video information device that is connected with IEEE1394 network 5 is identified as the UPnP AV equipment of standard specification, can utilizes this player device audiovisual to be stored in effect in accordance with the contents such as audio/video in the video information device of UPnP AV so have.
In above-mentioned execution mode 1, illustrate as the situation that the stream on the IP transmits agreement using HTTP, but also can use RTP (Realtime Transport Protocol is designated hereinafter simply as " RTP ").In present embodiment 2, the control protocol of the dialogue of using when carrying out the flow data transmission as use RTP is used real-time streaming protocol (Realtime Streaming Protocol is designated hereinafter simply as " RTSP ").Below only the part different with the situation of HTTP described in the explanation.
At first, in the retrieval S311 of content, in the data that " browsing " or " search " that the UPnP simulation process 325 of the step S405 of Figure 13 sends to UPnP control point 310 responds, the transportation protocol data are made as RTSP/RTP.
In addition, in the selection S314 of content in the action of software, the SetAVTransportURI behavior command that utilization is carried out at media renderer 312 from UPnP control point 310, the URI that gives media renderer 312 is in step S311, and UPnP simulation process 325 is to UPnP control point 310 URL that send, that used the content of RTSP/RTP.
Next, the software operation that reproduces among the S315 is described.Figure 17 is the figure that the sequence of movement of reproducing the software among the S315 is shown.
In step S470, UPnP control point 310 uses SOAP that media renderer 312 is sent the message that comprises the request of " broadcast " behavior command.
In step S471, media renderer 312 is in order to receive the situation of " broadcasts " behavior command request to UPnP control point 310 notice, and returns response message.
In step S472, media renderer 312 after use RTSP broadcast mode the transmission that UPnP-IEEE1394 gateway 2 sends contents is begun request.Thus, the stream of UPnP-IEEE1394 gateway 2 is handled the broadcast mode of 501 reception RTSP.
In step S473, the stream that receives message is handled 501 " broadcasts " that send the AV/C order to IEEE1394 bus control and treatment 324 as playback mode " F.F. ".
In step S474, IEEE1394 bus control and treatment 324 sends AV/C order " broadcast " as playback mode " F.F. " by IEEE1394 storehouse 322 to IEEE1394 equipment 3.
In step S475, the IEEE1394 equipment 3 that receives this AV/C order " broadcast " by IEEE1394 storehouse 322, comprises the AV/C response of the information that begins content playback to 324 passbacks of IEEE1394 bus control and treatment after the execution reproduction begins to handle.
In step S476, IEEE1394 bus control and treatment 324 promptly flows the AV/C response that processing 501 transmissions receive to the transmit leg of AV/C order.
In step S477, stream is handled the response of the broadcast mode of 501 pairs of media renderer, 312 passback RTSP.
In step S478, the flow data that IEEE1394 equipment 3 will send content is written into the synchronization packets of IEEE1394 with forms such as MPEG2-TS.Stream is handled 501 and is received this synchronization packets.
In step S479, stream is handled 501 data of taking out the stream format of MPEG2-TS etc. from this packet, is converted to the RTP packet, and sends to media renderer 312.
Under the situation of the reproduction of interrupt flow, send the message that comprises the request of " stopping " behavior command by 310 pairs of media renderer in UPnP control point 312, the stream of 312 pairs of UPnP-IEEE1394 gateways 2 of media renderer is handled TEARDOWN (closing) method of 501 transmission RTSP.In addition, stream handles 501 by IEEE1394 bus control and treatment 324, IEEE1394 equipment 3 is sent AV/C order " winding " " stop " as subfunction, stops the reproduction of IEEE1394 equipment 3 thus.
Figure 18 is the figure that the variation to the gateway apparatus of embodiments of the present invention 3 describes.Herein, the system of reproducing the video of the digital VTR (DVHS) that is connected with IEEE1394 network 5 with the UPnP media renderer 312 that is connected with IP network 4 is that example describes.
In Figure 18, in UPnP-IEEE1394 gateway 2, be provided with: central arithmetic processing apparatus (the following CPU of being.) 10; Be used to make the nonvolatile memory (read-only memory: ROM) be ROM 11 of system's starting; Random-access memory (ram) is RAM 12.CPU 10 utilizes RAM 12 to carry out the program that is installed among the ROM 11.
In addition, be provided with buffer storage 1120 and 1121 in the UPnP-IEEE1394 gateway 2. Buffer storage 1120 and 1121 is utilized when transmitting the AV packed data between IEEE1394 network 5 and IP network 4.In following action specification, they are made as buffer storage A1120 and buffering memory B1121.These buffer storage can be formed among the RAM 12, but in order to distinguish function, are designated as buffer storage A1120, buffer storage B1121.
And, in UPnP-IEEE1394 gateway 2, be provided with nonvolatile memory 1122.Nonvolatile memory 1122 be flash memory (registered trade mark: fast, the nonvolatile memory that is suitable for high capacity of the deletion of memory etc. and writing speed COMPACT FLASH), prepare to have data field and setting data district.In addition, but nonvolatile memory also can be the memory of battery back up.
And, in UPnP-IEEE1394 gateway 2, be provided with IEEE1394 controller 14.On IEEE1394 controller 14, be connected with and be used for the IEEE1394 interface (I/F) 1302 that is connected with IEEE1394 network 5.IEEE1394I/F1302 is not shown in Fig. 1, but is made of the driver and the acceptor circuit of the connector and the usefulness of communicating by letter, and is the interface between IEEE1394 controller 14 and the IEEE1394 network 5.IEEE1394 is the AV equipment network system that is used for TV and DVHS, digital video camera, control signal that can transfer equipment and the AV packed data after the MPEG compression.In addition, the 1305th, the DVHS machine according to the indication of UPnP-IEEE1394 gateway 2, by IEEE1394 network 5, sends the content (AV packed data) that is recorded in the DVHS tape to UPnP-IEEE1394 gateway 2.IEEE1394 controller 14 transmits control signal to the DVHS machine 1305 that is connected with IEEE1394I/F1302, perhaps received content according to the control of CPU 10.
And, in UPnP-IEEE1394 gateway 2, be provided with LAN controller 13.On LAN controller 13, be connected with and be used for the LAN interface (I/F) 1351 that is connected with IP network 4.
Next the action when utilizing UPnP media renderer 312 to reproduce the content that is recorded in the DVHS machine 1305 describes.The user uses UPnP control point 310 to carry out the indication of the content playback in the DVHS machine 1305.10 pairs of broadcast behavior commands from AV transmission 315 services at UPnP control point 310 of CPU make an explanation, by IEEE1394 controller 14 and IEEE1394I/F1302, send AV/C orders " broadcast " via 5 pairs of DVHS machines of IEEE1394 network 1305, indicate thus with output and be recorded in content in the DVHS tape that is arranged in the DVHS machine 1305.1305 pairs of UPnP-IEEE1394 gateways 2 of DVHS machine send the action that is recorded in the content in the DVHS tape.Content sends buffer storage A1120 from DVHS machine 1305 to via IEEE1394 network 5, IEEE1394I/F1302, IEEE1394 controller 14.
The content (the AV packed data of MPEG2-TS form) that is sent to buffer storage A1120 transmits to LAN controller 13 successively with packet unit, via LANI/F1351, IP network 4, send to UPnP media renderer 312 as the RTP packet, the selected content of demonstration/reproduction user.
Figure 19 is the flowing of data in this reproduction, be recorded in content in the DVHS machine 1305 from DVHS machine 1305, transmit to IEEE1394 network 5, IEEE1394I/F1302, IEEE1394 controller 14, buffer storage A1120, LAN controller 13, LAN I/F1351, IP network 4, reproduce by UPnP media renderer 312.
Being made as the user herein, uses UPnP control point 310 to send the indication that stops of content.Use the flow chart of Figure 20 that motion flow is at this moment described.
At first, in step S1601, during the stopping behavior command and make an explanation of AV transmission 315 services that 10 couples of CPU send by UPnP control point 310, in step S1602, with reference to the initial timestamp of the AV packed data on the buffer storage A1120.
Next, in step S1603, indicate " winding " to send the AV/C order from 2 pairs of DVHS machines of UPnP-IEEE1394 gateway 1305 " to stop " as subfunction, carry out stopping of content playback thus, measure DVHS machine 1305 to the time of finishing till stopping to handle, promptly stop the control response time.
Next, in step S1604, indicate with " broadcast " that send the AV/C order from 2 pairs of DVHS machines of UPnP-IEEE1394 gateway 1305 as playback mode " F.F. ", carry out reproduction of content thus, the time that content is sent to till the buffer storage A1120 of UPnP-IEEE1394 gateway 2 is to measure the reproducing control response time.
Next, in step S1605, indicate with " broadcasts " that send the AV/C order from 2 pairs of DVHS machines of UPnP-IEEE1394 gateway 1305 as playback mode " F.F. time-out (FORWARD PAUSE) ", carry out temporarily stopping of content playback thus, DVHS machine 1305 is promptly temporarily stopped to shift the control response time to the time till temporarily stopping to handle of finishing to be measured, in addition, indicate with " broadcast " that send the AV/C order to DVHS machine 1305 as playback mode " F.F. ", reproduce from the temporary transient halted state of content, DVHS machine 1305 begins reproduction processes from temporary transient halted state thus, and time till the buffer storage A1120 of UPnP-IEEE1394 gateway 2 that content is sent to promptly temporarily stops to restore the response time and measures.
Next, in step S1606, according to this reproducing control response time, stop the control response time, temporarily stop the timestamp information that to shift the control response time and temporarily stop to restore response time and step S1602, calculate from the timestamp before this timestamp 1 second begin to after the size of the AV packed data of reproducing control response time more than partly.For example, if timestamp information is 0: 05: 00 00, if the reproducing control response time, when the summation that stops the control response time, temporarily stops to shift the control response time and temporarily stop to restore the response time is 10 seconds, calculate the size of its 30 seconds AV packed data partly of 3 times with for example leaving surplus.
The capacity of the size of this AV packed data and nonvolatile memory 1122 relatively, when the size of this AV packed data is in capacity, in S1607, from DVHS machine 1305 AV packed data to 30 seconds parts after nonvolatile memory 1122 transmission have just stopped.And when the size of AV packed data exceeded nonvolatile memory 1122 capacity, deletion was determined capacity and is transmitted more than part.
Next, in step S1609, the last timestamp that is replicated in the AV data in the nonvolatile memory 1122 (final timestamp information) is copied in the setting data district of nonvolatile memory 1122.That is, in above-mentioned example, be 0: 05: 00 00 to timestamp information, trace back 30 seconds parts of beginning in 1 second, promptly 0: 05: 29 00 final timestamp information duplicates.
Next, in step S1610, DVHS machine 1305 is sent " the RELATIVE TIME COUNTER " of AV order, stop the debatching of DVHS tape is added time of reproducing control response time to timestamp information after.That is, for example, established timestamp information and be 0: 05: 00 00 and reproducing control response time when being 10 seconds, the debatching of DVHS tape stopped after 0: 05: 10 00.
Next, be made as the user and use UPnP control point 310 to send the reproduction of content indication that is stopped, as the behavior command that stops of AV transmission 315 services to UPnP-IEEE1394 gateway 2.Use Figure 21 that the motion flow of this moment is described.UPnP-IEEE1394 gateway 2 explains in step S1701 when reproducing indication that " broadcast " of in step S1702 DVHS machine 1305 transmission AV/C being ordered is as playback mode " F.F. ".The reproduction processes of DVHS machine 1305 is carried out in step S1750, but the reproducing control response time that this processing need be determined in stopping to handle, so carry out the later processing of step S1703 therebetween.That is, in step S1703, obtain the final timestamp information in the setting data district that is recorded in nonvolatile memory 1122.
Next in step S1704, transmit the packed data that is write down to buffer storage B1121 from the data field of nonvolatile memory 1122, and from cushioning memory B1121 via LAN controller 13, LAN I/F1351, IP network 4, transmit the packed data that is write down to UPnP media renderer 312, reproduce thus.After this, in the conditional branching of step S1705, till finishing to the Synchronous Processing of being carried out, return step S1704 in step S1752 described later, the AV packed data that is recorded in the data field of nonvolatile memory 1122 is reproduced., in step S1751, carry out the transmission of content to buffer storage A therebetween, in step S1752, carry out Synchronous Processing (step S1752) from DVHS machine 1305.In step S1705, when being judged to be Synchronous Processing step S1752 end, carry out hand-off process step S1710, in step S1711, reproduce usually.
Use Figure 22 that the processing of Synchronous Processing step S1752 is described.
In step S1801, begin Synchronous Processing, in step S1802, buffer storage B1121 is compared with the timestamp that is input to the up-to-date packet of buffer storage A1120., transmit to buffer storage B1121 herein, transmit to buffer storage A1120 from the AV packed data of DVHS machine 1305 from the AV packed data of nonvolatile memory 1122.In step S1803, when the timestamp of buffer storage B1121 is more leading than buffer storage A1120, from the data hysteresis of DVHS machine 1305, so in step S1805, the second fractional part that F.F. lags behind returns step S1802.Herein, leading judgement be by whether leading according to can be stored in data among buffer storage A1120, the buffer storage B1121 second several threshold values that calculate with on judge.That is, for example, be made as 5 seconds partial data and be stored in respectively among buffer storage A1120, the buffer storage B1121, when leading its more than 40%, in the time of promptly more than 2 seconds, it is leading then to be judged as buffer storage B1121.
Use Figure 23 is described.
Figure 23 is the ranks that are input to the packet among buffer storage A1120, the buffer storage B1121, in buffer storage B1121, imports data successively from " 1 " beginning of D3001, and " 8 " expression of D3008 is input to the latest data of buffer storage.In buffer storage A1120, import data successively from " 1 " beginning of D3101, " 4 " expression of D3104 is input to the latest data of buffer storage.When comparing latest data, then become the comparison of D3008 and D3104, buffer storage B1121 is more leading.
In step S1803, under the situation more than 40% that is judged as not leading buffer storage, in step S1804, judge whether buffer storage B1121 postpones than buffer storage A1120.Being judged as under the situation of delay, in step S1806, judge whether to postpone more than the threshold value.Control response time of being measured in the processing of this threshold value when stopping that stopping and reproducing control response time and determine.That is, stop control response time and reproducing control response time and more than, under the leading situation of the AV of DVHS machine 1305 packed data, in step S1808, carry out the stopping of DVHS machine 1305, reproduction processes, return step S1802.
In step S1806, under the situation below the threshold value, in step S1807, temporarily stop to handle, that is measured in the processing when stopping temporarily stopping transfer time and temporarily stops recovery time, temporarily stops processing, returns step S1802.
In step S1804, under the situation that data do not lag behind, the leading situation that is buffer storage B1121 is according to second that can be stored in data among buffer storage A1120, the buffer storage B1121 in several threshold ranges that calculate when (being below 40% in the above-mentioned example), in step S1809, be made as synchronously and finish.
That is, finish constantly synchronously, in the difference below 40% of the data of buffer storage B1121 than the total capacity of the leading buffer storage of buffer storage A1120.
Use Figure 24 that the hand-off process of step S1710 in the flow chart of Figure 21 is described.Figure 24 is ranks of finishing the packet that is input to buffer storage A1120, buffer storage B1121 constantly synchronously, the data of buffer storage B1121 than the leading buffer storage of data of buffer storage A1120 40% with interior scope.
The reproduced image of DVHS tape is just to have begun the image after the reproduction from halted state or temporary transient halted state, and DVHS machine 1305 is operating stably not, so image can be disorderly sometimes.In order to prevent this situation, do not use several seconds after reproduction has just begun from the image of the buffer storage A1120 of DVHS machine 1305 during, data during 2 seconds for example, and directly discarded.In the example of Figure 24, " 11 " and " 12 " of D3112 of the D3111 of discarded buffer storage A1120, with the separation of thereafter packet (for example, the separation of timestamp) is made as switching point, sends by sending to switch to from buffering memory A1120 from buffering memory B1121.At this moment, buffer storage B1121 is more leading, and buffer storage A1120 relatively lags behind, so the AV amount of compressed data that is stored among the buffer storage A1120 lacks than buffer storage B1121.That is, the buffer storage of using in the time of can reducing the reproduction from the data of DVHS machine 1305 after the switching, under the situation of dynamically guaranteeing buffer storage A1120, open memory can be used in other program etc. thus.
As mentioned above, present embodiment 3 is the UPnP-IEEE1394 gateway 2:CPU 10 that are made of following element; RAM 12; The nonvolatile memory ROM 11 that is used for save routine; But from the video distribution equipment of the sequential access that is connected with IEEE1394 network 5 is that the network equipment that DVHS machine 1305 obtains video data is IEEE1394I/F1302 and IEEE1394 controller 14; Preserve the nonvolatile memory 1122 of the part of video data; Temporary transient buffer storage A1120 and the buffering memory B1121 that preserves video data; And the LAN controller 13 and the LAN I/F1351 that send video data.This UPnP-IEEE1394 gateway 2 has: when the reproduction that stops video data, will stop the unit that later video data copies to nonvolatile memory 1122 from DVHS machine 1305 via IEEE1394 network 5; And the unit of the final data information (timestamp) of the video data of storage non-volatile memories 1122.In addition, this UPnP-IEEE1394 gateway 2 also has: when playback mode shifts, the video data of nonvolatile memory 1122 is sent to the unit of buffer storage B1121 from halted state; Transmit the unit of video data to LAN controller 13 from buffering memory B1121; And meanwhile, be sent to the unit of buffer storage A1120 via IEEE1394 network 5 video data that final data information is later from DVHS machine 1305.This UPnP-IEEE1394 gateway 2 also has: according to final data information, the video data that is sent to UPnP media renderer 312 is altered to the unit of buffer storage A1120 from buffering memory B1121, so significantly shorten the stand-by time that inserts after power supply begins, realize improving good usability, and reproduce the video data that is kept in the nonvolatile memory 1122 after the reproducing control immediately, therefore can short time display reproduction video.
In addition, use the time stamp data that is included in the video data as final data information, thus carry out the initialization process of DVHS machine 1305 simultaneously, after initialization process finishes, according to timestamp information Switch Video data, so can switch smoothly.
In addition, when the reproduction of video data stops, be made as the video data that copies to nonvolatile memory 1122 from DVHS machine 1305 and comprise video data before the stop position, so reproduce according to the video data before the stop position, therefore when stopping to control, decoder is the data in the reproduction processes also, so stop/reproducing operation by the user, can control, making not exist does not have reproduced video.
In addition, be made as the video data that comprises final data information and be not sent to buffer storage B1121 from nonvolatile memory 1122, therefore in reproduction, do not use the video data of the final data information that comprises the final area that is positioned at nonvolatile memory 1122, so can prevent the video disorder that data deficiencies causes.
In addition, but nonvolatile memory 1122 is memories of battery back up, so the memory that uses battery back up can substitute UPnP-IEEE1394 gateway 2 built-in memories thus and use as non-volatile video memory, can be in device the storage and uniform device.
In addition, UPnP-IEEE1394 gateway 2 has to control makes the DVHS machine 1305 be connected with IEEE1394 network 5 send video data, calculates the unit that desired video data is sent to the reproducing control response time till the buffer storage A1120.According to the reproducing control response time, appointment is sent to the video data size of nonvolatile memory 1122, therefore in conjunction with the response speed of the DVHS machine 1305 that is connected with network, determine to be kept at the video data size in the nonvolatile memory 1122, therefore can effectively use nonvolatile memory 1122.
In addition, UPnP-IEEE1394 gateway 2 has the unit that control sends from the video data of DVHS machine 1305, so that temporarily be kept at buffer storage B1121 respectively and cushion the timestamp of video data of memory A1120 identical and be contained in contemporaneity.The timestamp of the video data in temporarily being kept at buffer storage B1121 and buffering memory A1120 respectively is identical and when being contained in contemporaneity, the video data that sends to UPnP media renderer 312 sends by sending to switch to from buffering memory A1120 from buffering memory B1121, therefore but at the DVHS machine 1305 of only sequential access, control DVHS machine 1305 is so that comprise the data of identical time stamp in the buffer, carry out the switching of buffer storage, so the video of sequential access to new equipment, also can obtain not having the reproduced image of inharmonious sensation.
In addition, the timestamp of the video data in temporarily being kept at buffer storage A1120 and buffering memory B1121 respectively is identical and when being contained in contemporaneity, control sends from the video data of DVHS machine 1305, so that the use amount of buffer storage B1121 reduces, therefore recently the data from nonvolatile memory 1122 are few to be made as when switching data from the DVHS machine 1305 of blotter in nonvolatile memory 1122, so the buffer storage of the video distribution device after can be in the future adaptive switched suppresses lessly.
In addition, control, make temporarily be kept at buffer storage B1121 respectively and cushion the timestamp of the video data among the memory A1120 identical and also be contained in contemporaneity after, part during discarded video data from buffer storage A1120 certain, thereafter, the video data that sends to UPnP media renderer 312 is sent by sending to switch to from buffering memory A1120 from buffering memory B1121, therefore by part during discarded data from DVHS machine 1305 certain, but in the video distribution device of only sequential access, can remove the disorder of reproducing the video of seeing soon after the beginning.
In addition, be made as by use reproduction, stop, temporarily stopping video distribution equipment, the control of F.F. carries out sending control from the video data of DVHS machine 1305, can utilize Synchronous Processing is carried out in the general control of DVHS machine 1305, therefore in video distribution equipment in the past, also be suitable for.
In addition, UPnP-IEEE1394 gateway 2 has with lower unit: control, the DVHS machine 1305 of the feasible playback mode that is connected with IEEE1394 network 5 stops to send video data, and calculates the unit that stops the control response time that stops till buffer storage A1120 transmits video data; And control, make the DVHS machine 1305 be connected with IEEE1394 network 5 send video data, and calculate the unit that desired video data is sent to the reproducing control response time till the buffer storage A1120; Control, the DVHS machine 1305 of the feasible playback mode that is connected with IEEE1394 network 5 temporarily stops to send video data, and calculates the unit that temporarily stops the control response time that stops till buffer storage A1120 transmits video data; And control, the DVHS machine 1305 of the feasible temporary transient halted state that is connected with IEEE1394 network 5 is sent video data, and calculates the unit that temporarily stops to restore the response time till buffer storage A1120 transmits video data.According to the reproducing control response time, stop the control response time, temporarily stop control response time and temporarily stop to restore the response time, carry out to DVHS machine 1305 reproduction, stop, temporarily stopping, the control of F.F., control thus, make the timestamp that temporarily is kept at the video data among buffer storage B1121 and the buffering memory A1120 respectively identical and be contained in contemporaneity, therefore can utilize the generality of DVHS machine 1305 controlled and carry out Synchronous Processing, therefore in video distribution equipment in the past, also be suitable for.
In execution mode 4, stop the processing of indicating as shown in figure 25.That is, with Figure 25 to the user use UPnP control point 310 send contents stop to indicate the time motion flow describe.In addition, about structure, as shown in figure 26, in the UPnP-IEEE1394 of execution mode 3 gateway 2, be provided with the MPEG CODEC1370 that is used to recompress video data, the MPEG of one of compression/de-compression mode by video/audio (Moving Picture Experts Group: video recording is carried out compression/de-compression with the AV data Motion Picture Experts Group).Structure about other is identical with Figure 25.
At first, in the step S1601 of Figure 25, during the stopping behavior command and make an explanation of AV transmission 315 services that 10 couples of CPU are sent by UPnP control point 310, in step S1602, with reference to the initial timestamp of the AV packed data on the buffer storage A1120.Next, stop the mensuration of control response time in step S1603, the reproducing control response time is measured in step S1604, and in step S1605, mensuration temporarily stops transfer time and temporarily stops recovery time.
Next, in step S1606, according to this reproducing control response time, stop the control response time, temporarily stop the timestamp information that to shift the control response time and temporarily stop to restore response time and step S1602, calculate from begin early than the timestamp before this timestamp 1 second to after the size of the AV packed data of reproducing control response time more than partly.For example, if timestamp information is 0: 05: 00 00, if the reproducing control response time, when the summation that stops the control response time, temporarily stops to shift the control response time and temporarily stop to restore the response time is 10 seconds, calculate the size of its 30 seconds AV packed data partly of 3 times with for example leaving surplus.
And, in step S1701, according to the recompression rate of the calculation of capacity AV packed data of nonvolatile memory 1122.According to this recompression rate, in step S1702, use MPEGCODEC1370 that the AV packed data of 30 seconds parts is recompressed.At this moment, near the last part in the AV packed data of 30 seconds parts, recompress so that compression ratio is identical with initial AV packed data.
This is carried out straightaway explanation.
For example, timestamp information is that AV 0 o'clock 05 minute 00 second 00 o'clock, that be recorded in 30 seconds parts in the nonvolatile memory 1122 recompresses the last part of data near 0: 05: 29.Near the variation of the compression ratio of data that should be as shown in figure 27.
In Figure 27, D2001, D2002, D2003, D2004 are the groups of the AV recompression data in the nonvolatile memory 1122, D2001 represents the group of 0: 05: 26 00 to 0: 05: 26 59 data, similarly, D2002 represents 0: 05: 27 00 to 0: 05: 27 59 packet, D2003 represents 0: 05: 28 00 to 0: 05: 28 59 packet, and D2004 represents 0: 05: 29 00 to 0: 05: 29 59 packet.
, the compression ratio of data is made as the three phases of grade A, B, C herein, establishes grade A for by low compression, establish B, C successively for by high compression, establishing the compression ratio that AV packed data before the recompression promptly is recorded in the AV packed data in the DVHS tape is grade A.At this moment, last part vicinity in the AV packed data of 30 seconds parts, in order to recompress so that compression ratio is identical with initial AV packed data, in 0: 05: 26 00 to 0: 05: 26 59 (D2001), be made as the grade C of high compression rate, in 0: 05: 27 00 to 0: 05: 27 59 (D2002), reduce some compression ratios and be made as grade B, in 0: 05: 28 00 to 0: 05: 28 59 (D2003), be made as with recompress before the grade A of the identical hierarchy compression of AV packed data.
Next, in the step S1609 of Figure 25, the last timestamp that is replicated in the AV data in the nonvolatile memory 1122 (final timestamp information) is copied in the setting data district of nonvolatile memory 1122.That is, in above-mentioned example, 0: 05: 29 00 final timestamp informations are duplicated.
Next, in step S1610,, stop the debatching of DVHS tape is added time of reproducing control response time to timestamp information after DVHS machine 1305.That is, for example, established timestamp information and be 0: 05: 00 00 and reproducing control response time when being 10 seconds, the debatching of DVHS tape stopped after 0: 05: 10 00.
Next, be made as the reproduction of content indication that the user uses 310 transmissions of UPnP control point to stop.So the action and execution mode 3 identical omissions of this moment.
Thus, when reproducing by nonvolatile memory 1122, there is some image quality deterioration because of effective utilization of memory, but when switching to the AV packed data from DVHS machine 1305, constitute interim change compression ratio, so can not have inharmonious sensation ground to reproduce so that image quality changes.
As mentioned above, according to present embodiment 4, UPnP-IEEE1394 gateway 2 has the MPEG CODEC1370 of recompression video data, memory span in conjunction with nonvolatile memory 1122, when the reproduction of video data stops, by MPEG CODEC1370 the video data from DVHS machine 1305 being recompressed, copy to nonvolatile memory 1122, therefore by the data that are recorded in the nonvolatile memory 1122 are recompressed, can reduce the use amount of RAM 12.
In addition, when the recompression of video data, change compression ratio and make the final data that is stored in the video data in the described nonvolatile memory 1122 to recompress with the preceding identical compression ratio of recompression, therefore AV packed data when the playback mode from nonvolatile memory 1122 switches to the common playback mode of DVHS machine 1305 grades, that be recorded in the non-volatile video memory is identical with common playback mode, so can reduce the situation of perceiving the image quality variation that causes because of switching.
Claims (17)
1. a gateway apparatus is characterized in that, this gateway apparatus has:
First communication unit, it is connected with the 1st network that moves in accordance with being used in the IP agreement of internet, and communicates with the equipment that is connected with described the 1st network;
The second communication unit, it is connected with the 2nd network, and communicates with the equipment that is connected with described the 2nd network;
The identifier management unit, it exports the IP identifier of described the 1st network;
Corresponding unit, it starts the program corresponding to the equipment that is connected with described the 2nd network, and described program and described IP identifier are mapped;
The identifier notification unit, it notifies described IP identifier to the equipment that is connected with described the 1st network;
The command information notification unit, it can be in the command information of described the 1st network execution to the equipment notice that is connected with described the 1st network;
The command conversion unit, its command conversion with described the 1st network is the order of described the 2nd network; And
Stream transmits the unit, and it will be converted to the transportation protocol of described the 1st network and be sent to described the 1st network from the flow data that described the 2nd network sends by the transportation protocol of described the 2nd network,
This gateway apparatus is operated the equipment that is connected with described the 2nd network according to the instruction from the equipment that is connected with described the 1st network, and transmits the flow data that is stored in the equipment that is connected with described the 2nd network to the equipment that is connected with described the 1st network.
2. gateway apparatus according to claim 1 is characterized in that,
Described the 1st network is the UPnP network,
Described the 2nd network is the IEEE1394 network.
3. gateway apparatus according to claim 1 is characterized in that,
This gateway apparatus uses the transportation protocol of HTTP as described the 1st network.
4. gateway apparatus according to claim 1 is characterized in that,
This gateway apparatus uses the transportation protocol of RTP as described the 1st network.
5. gateway apparatus, it has: CPU; Memory; Nonvolatile memory, it is used to preserve the operation program of described CPU; Network equipment, but its video distribution equipment from the sequential access that is connected with the 2nd network obtains video data; Non-volatile video memory, it preserves the part of described video data; And the 1st buffer storage and the 2nd buffer storage, it temporarily preserves described video data, it is characterized in that,
This gateway apparatus has:
Copied cells, its receive the reproduction that is used to stop described video data stop index signal the time, via described the 2nd network will receive described predefined the 1st scheduled volume part that stops the later video data of index signal from described video distribution device replication to described non-volatile video memory;
The final data memory cell, its storage final data information, described final data information is used for discerning video data video data, final of the described non-volatile video memory of described the 1st scheduled volume part of being duplicated;
The 1st delivery unit, it is when receiving the reproduction index signal, the video data of described non-volatile video memory is sent to described the 1st buffer storage, and wherein, described reproduction index signal is used to reproduce according to the described index signal that stops and has stopped the described video data that reproduces;
The 2nd delivery unit, its described video data that will be sent to described the 1st buffer storage is sent to the 1st network from described the 1st buffer storage;
The 3rd delivery unit, itself and described the 2nd delivery unit carry out to the transmission of described the 1st network simultaneously, be sent to described 2nd buffer storage by described the 2nd network video data that described final data information is later from described video distribution equipment according to described final data information;
Detecting unit, it is according to described final data information, detects described the 2nd delivery unit and will be stored in the situation that data described the 1st buffer storage, till the final video data have been sent to described the 1st network; And
The 4th delivery unit, it is after described detecting unit detects above situation, stop the transmission that described the 2nd delivery unit carries out, the described video data that is stored in described the 2nd buffer storage is sent to described the 1st network from described the 2nd buffer storage to described the 1st network.
6. gateway apparatus according to claim 5 is characterized in that,
Described final data information is included in the time stamp data in the described video data.
7. according to claim 5 or 6 described gateway apparatus, it is characterized in that,
The video data that is copied in the described non-volatile video memory by described copied cells when the reproduction of described video distribution equipment stops to comprise early than predefined the 2nd scheduled volume of stop position video data partly.
8. according to claim 5 or 6 described gateway apparatus, it is characterized in that,
The video data that described the 1st delivery unit will not comprise described final data information transmits to described the 1st buffer storage from described non-volatile video memory.
9. according to claim 5 or 6 described gateway apparatus, it is characterized in that,
But described non-volatile video memory is made of the memory of battery back up.
10. according to claim 5 or 6 described gateway apparatus, it is characterized in that,
This gateway apparatus also has reproducing control response time computing unit, this reproducing control response time computing unit is controlled, make the described video distribution equipment that is connected with described the 2nd network send described video data, and calculate from this moment reproducing control response time till desired video data is sent to described the 2nd buffer storage
The video data size that is copied to the video data in the described non-volatile video memory by described copied cells is according to the described reproducing control response time and designated.
11. gateway apparatus according to claim 10 is characterized in that,
This gateway apparatus also has the coder/decoder that described video data is carried out compression/de-compression,
When the reproduction of described video data stops, by described copied cells from the described video data of described video distribution device replication memory span and the described reproducing control response time according to described non-volatile video memory, recompress by described coder/decoder, and copy in the described non-volatile video memory.
12. gateway apparatus according to claim 11 is characterized in that,
When the recompression of described video data, change compression ratio, and make the final data that is kept at the video data in the described non-volatile video memory recompress with the compression ratio identical with recompressing preceding compression ratio.
13. gateway apparatus according to claim 5 is characterized in that,
This gateway apparatus also has sending controling unit, this sending controling unit control sends from the video data of described video distribution equipment, so that it is identical and be contained in contemporaneity temporarily to be kept at the timestamp of the video data in described the 1st buffer storage and described the 2nd buffer storage respectively
The result who controls as described sending controling unit, the timestamp of the video data in temporarily being kept at described the 1st buffer storage and described the 2nd buffer storage respectively is identical and when being contained in contemporaneity, the video data that described the 4th delivery unit will send to described the 1st network sends by sending to switch to from described the 2nd buffer storage from described the 1st buffer storage.
14. gateway apparatus according to claim 13, it is characterized in that, described sending controling unit control sends from the video data of described video distribution equipment, so that the timestamp of the video data in temporarily being kept at described the 1st buffer storage and described the 2nd buffer storage respectively is identical and when being contained in contemporaneity, the use amount of described the 2nd buffer storage tails off.
15. according to claim 13 or 14 described gateway apparatus, it is characterized in that,
By described sending controling unit be controlled to be the timestamp that temporarily is kept at the video data in described the 1st buffer storage and described the 2nd buffer storage respectively identical and also be contained in contemporaneity after, part during the video data of discarded described the 2nd buffer storage certain, thereafter, described the 4th delivery unit video data that will send to described the 1st network sends by sending to switch to from described the 2nd buffer storage from described the 1st buffer storage.
16. according to claim 13 or 14 described gateway apparatus, it is characterized in that,
What described sending controling unit carried out sends control from the video data of described video distribution equipment, comprises reproduction to video distribution equipment, stops, temporarily stopping, the control of F.F..
17., it is characterized in that this gateway apparatus also has according to claim 13 or 14 described gateway apparatus:
Stop the control response time calculating unit, it is controlled and makes described video distribution equipment of the playback mode is connected with described the 2nd network stop to send video data, and calculating is from this moment to stopping to stop the control response time till described the 2nd buffer storage transmission video data;
Reproducing control response time computing unit, it is controlled and makes the described video distribution equipment be connected with described the 2nd network send video data, and calculating is sent to reproducing control response time till described the 2nd buffer storage to desired video data from this moment;
Temporarily stop the control response time calculating unit, it is controlled and makes described video distribution equipment of the playback mode is connected with described the 2nd network temporarily stop to send video data, and calculating is from this moment to stopping temporarily to stop the control response time till described the 2nd buffer storage transmission video data; And
Temporarily stop to restore the response time computing unit, its described video distribution equipment of controlling the feasible temporary transient halted state that is connected with described the 2nd network is sent video data, and calculate from this moment temporarily stopping till having transmitted video data and restore the response time to described the 2nd buffer storage
Described sending controling unit by according to the described reproducing control response time, describedly stop the control response time, describedly temporarily stop the control response time and described temporarily stopping to restore the response time, carry out to described video distribution equipment reproduction, stop, temporarily stopping, the control of F.F., be controlled to and make the timestamp that temporarily is kept at the video data in described the 1st buffer storage and described the 2nd buffer storage respectively identical and be contained in contemporaneity.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
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| JP2006055058A JP2007235584A (en) | 2006-03-01 | 2006-03-01 | Gateway device |
| JP055058/2006 | 2006-03-01 | ||
| JP079601/2006 | 2006-03-22 | ||
| JP2006079601A JP4532426B2 (en) | 2006-03-22 | 2006-03-22 | Video information processing device |
| PCT/JP2007/053607 WO2007099939A1 (en) | 2006-03-01 | 2007-02-27 | Gateway device |
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| CN101395859A CN101395859A (en) | 2009-03-25 |
| CN101395859B true CN101395859B (en) | 2011-12-07 |
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| TWI421690B (en) * | 2007-11-21 | 2014-01-01 | Ind Tech Res Inst | Intelligent remote interface apparatus, system and the method thereof |
| KR101597826B1 (en) * | 2008-08-14 | 2016-02-26 | 삼성전자주식회사 | Method and apparatus for playbacking scene using universal plug and play |
| JP5391911B2 (en) | 2009-08-05 | 2014-01-15 | ソニー株式会社 | Electronics |
| US8683007B2 (en) * | 2010-05-27 | 2014-03-25 | Smsc Holdings S.A.R.L. | Seamless transfer of media streams |
| JP5579239B2 (en) * | 2012-10-09 | 2014-08-27 | 株式会社東芝 | Content processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1438791A (en) * | 2002-02-15 | 2003-08-27 | 株式会社日立制作所 | Network device and control method thereof |
| CN1509547A (en) * | 2002-02-28 | 2004-06-30 | Lg电子株式会社 | Home network system and method for exchanging standards in the same |
| US6963925B1 (en) * | 1999-06-24 | 2005-11-08 | Matsushita Electric Industrial Co., Ltd. | Gateway apparatus and the method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6963925B1 (en) * | 1999-06-24 | 2005-11-08 | Matsushita Electric Industrial Co., Ltd. | Gateway apparatus and the method thereof |
| CN1438791A (en) * | 2002-02-15 | 2003-08-27 | 株式会社日立制作所 | Network device and control method thereof |
| CN1509547A (en) * | 2002-02-28 | 2004-06-30 | Lg电子株式会社 | Home network system and method for exchanging standards in the same |
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