CN102387121A - Management server, image dissemination control system and image dissemination control method - Google Patents
Management server, image dissemination control system and image dissemination control method Download PDFInfo
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Abstract
The invention aims at providing a management server, an image dissemination control system and an image dissemination control method. Information related with image data formats can be obtained under any condition by analyzing image dissemination application obtained from a terminal by a proxy server. The image dissemination control system comprises a proxy server and a code converter, wherein the proxy server performs relaying for communication between the terminal and an image dissemination server and is provided with a network interface conducting communication through the network and an image dissemination application analyzer. The image dissemination application analyzer analyzes the image dissemination application when receiving image dissemination application of starting image dissemination from the terminal through the network interface, draws information related to the image category, and sends the drawn information serving as the image category information to the code converter. The code converter performs various image data processing on image data in dissemination according to instructions of the proxy server by using the received image category information.
Description
Technical field
The present invention relates to a kind of management server, image distribution control system and image distribution control method to controlling via the image distribution services of network.
Background technology
(Fiber To The Home:FTTH) is the development of the access network technology of representative along with the technology of registering one's residence with optical fiber, and the Netowrk tape territory that the user can utilize increases sharply.The increase in band territory makes the broadband content distribution services on the network become possibility, and to wait with the image with IPTV service, video request program (VoD) service be that the service at center constantly develops on market.Because the presentation content of distribution is encoded through various coded systems; Perhaps the network of distribution path also is divided into wired, wireless and has variation, so the code conversion that has proposed the distribution bit rate or the coded system of animation data are changed technology.For example; Following technology is disclosed in as prior art patent file 1 (TOHKEMY 2008-211568 number); That is: the image quality when the audiovisual image data the lowest term that should satisfy and the condition of the desired image quality of portable terminal device; In the distribution bit rate of network side calculating image data, use code converter to control, make the distribution bit rate of image become the bit rate that calculates.
Patent document 1: TOHKEMY 2008-211568 number
In the control of image data, information that need be relevant with the image data form.In above-mentioned prior art; Code converter is obtained the information relevant with data format from the image Distributor of outside and is controlled, but such processing only can be carried out under the situation of the communication protocol of having stipulated to be used for the transceive data form between image Distributor and the code converter.On the other hand, in the system employs of reality, because the image Distributor provides by content provider arbitrarily, so code converter is not necessarily can obtain the information relevant with the image data form from the image Distributor.
Summary of the invention
The present invention In view of the foregoing accomplishes; Its purpose is; A kind of management server, image distribution control system and image distribution control method are provided; Through the image dispense request that obtains from the terminal via acting server is analyzed, thereby under any circumstance can both obtain the information relevant with the image data form.
A technical scheme of the present invention is a kind of image distribution control system; Via network the image distribution services is provided; It is characterized in that; Comprise acting server and the code converter that is connected with above-mentioned acting server: above-mentioned acting server carries out relaying to communicating by letter between the image Distributor of request image terminal of distributing and the image data of managing the distribution object, and have: network interface communicates via network; And image dispense request parsing portion; When receiving the image dispense request of request beginning image distribution from above-mentioned terminal via above-mentioned network interface; Above-mentioned image dispense request is resolved; Extract the information relevant, the information of being extracted is sent to above-mentioned code converter as the image classification information with the image classification; The image classification information that above-mentioned code converter utilization receives is carried out various image datas according to the indication of above-mentioned acting server to the above-mentioned image data in the distribution and is handled.
According to the present invention; In the system that the user is distributed image, introducing has acting server and the common image distribution control system that constitutes of code converter, makes code converter to obtain the information relevant with the image data form from end side through acting server.
In addition, the present invention also can be that the image classification information comprises encapsulation classification information or CODEC classification information at least.
Encapsulation classification information and CODEC classification information are the image data classification information that needs during existing image data is handled.
In addition, the present invention also can be, every kind of image classification information comprises a plurality of image classification candidates and representes the group of classification information accuracy of this image classification candidate's accuracy accordingly with this image classification candidate.
In this case; Above-mentioned code converter also can also comprise image classification information judging part; This image classification information judging part is when receiving above-mentioned image classification information from above-mentioned acting server; According to the pairing classification information accuracy of a plurality of image classification candidates order from high to low of every kind of image classification information, the pairing image classification of applicable category accuracy of information candidate's evaluation algorithm is successively confirmed the image classification of image data.
Like this; For example there are a plurality of image classification candidates in the classification information and exist a plurality of during with image classification candidate corresponding class accuracy of information in encapsulation; Code converter can be suitable for each evaluation algorithm, till finding correct image classification successively according to the size of accuracy.
In addition; Above-mentioned acting server can also comprise the informing function judging part; When receiving the image dispense request from the terminal; Whether the represented image Distributor of the above-mentioned image dispense request of this informing function judgement section judges has image classification informing function, is only judging when not having image classification informing function, just through image dispense request parsing portion the image dispense request is resolved.
Like this, can practice thrift time and resource that acting server is resolved, improve the efficient of entire system.
In addition, the present invention also can be the management server and the image distribution control method of a kind of integrated above-mentioned acting server and above-mentioned code converter.
The invention effect:
The present invention has improved the system that the user is distributed image via network.According to image distribution control system of the present invention; Even under the situation of the mechanism that notice image data format information is not set between acting server and the image Distributor; To code converter notice image data format information, also can realize image distribution control through acting server based on code conversion.
Description of drawings
Fig. 1 is the block diagram that expression has been suitable for the image distribution control system of an embodiment of the invention.
Fig. 2 is the block diagram of the formation of expression acting server.
Fig. 3 is the block diagram of the formation of expression code converter.
Fig. 4 is the block diagram of the formation of expression image Distributor.
Fig. 5 is the sequential chart of the image distribution processor under the situation of the mechanism of image Distributor with notice image classification.
Fig. 6 is the sequential chart that acting server is inferred the image distribution processor under the situation of image classification.
Fig. 7 is the sequential chart that the image Distributor does not have the image distribution processor under the situation of the mechanism that the image informing function of image Distributor is judged.
Fig. 8 is the flow chart of an example of the control in the expression acting server.
Fig. 9 is the flow chart of an example of the control in the expression code converter.
Figure 10 is the flow chart of an example of the control in the expression image Distributor.
Figure 11 is the key diagram that is illustrated in the example of the packet that uses in the image distribution control system.
Figure 12 is the key diagram of the initial value of expression encapsulation classification judging means information D B, CODEC classification judging means information D B.
Figure 13 is the key diagram of the update mode of expression encapsulation classification judging means information D B, CODEC classification judging means information D B.
Figure 14 is the key diagram of the update mode of expression encapsulation classification judging means information D B, CODEC classification judging means information D B.
Figure 15 is the key diagram of the update mode of expression encapsulation classification judging means information D B, CODEC classification judging means information D B.
Symbol description
1 acting server
2 code converters
3 image Distributors
4 networks
5 terminals
6 Access Networks
Embodiment
Below, with reference to description of drawings execution mode of the present invention.
(first execution mode)
Fig. 1 has represented to be suitable for the pie graph of the content delivering system of image distribution control system of the present invention.In Fig. 1, content delivering system comprises: and terminal 5 (5-1～5-N), the distribution of request image; Acting server 1, reception comes the image dispense request of self terminal 5, and control is connected the code converter 2 that communicates with it; Code converter 2 is connected with acting server 1, receives the indication from acting server 1, realizes various image distribution processor; Image Distributor 3-1～3-N via the image dispense request of acting server 1 receiving terminal 5, and provides and the corresponding presentation content of image dispense request; And be connected in the network 4 and Access Network 6 between them.
Wherein, acting server 1 carries out and the relevant various controls of image distribution between terminal 5 and image Distributor 3-1～3-N.For example, in exemplary systems constitutes, between acting server 1 and terminal 5, constitute Access Network 6, when Access Network 6 crowded and can't sufficient frequency band be provided the time, the dispense rate of acting server 1 indication code converter 2 reduction images.In addition, when the form of the presentation content that is provided at image Distributor 3-1～3-N and the form of the presentation content that terminal 5 can be reproduced were inconsistent, acting server 1 information code transducer 2 carried out the conversion of form.In this a series of control, code converter 2 all need be obtained the image data format information as the presentation content of process object before handling.Adquisitiones about the image data form is described in detail in the back.
In addition, in system shown in Figure 1, acting server 1 and code converter 2 are described as two independent device, acting server 1 constitutes image distribution control system with code converter 2, carries out image distribution control jointly.But also can be with acting server 1 and code converter 2 both form a device (for example management server) and perhaps be integrated in the other system and move, also can constitute the present invention.
Next the detailed formation to each device describes.
Fig. 2 is that the device of acting server 1 constitutes.In Fig. 2, acting server 1 has CPU 12, memory 16, hard disk 14 and the network interface 10 on bus of being connected 18, communicates with the outside via the data packet transceive portion of network interface 10 101.In hard disk 14, store image stream information database (DB) 141 of having preserved the information relevant and the image Distributor information D B 143 that has preserved the information relevant with the image Distributor with the image stream of controlling object.In addition, on memory 16, read and write through the control program 161 of acting on behalf of that loads.
The control program 161 of acting on behalf of on the memory 16 comprises: session management module 1611, the session status of management application; Image dispense request parsing module 1613 is resolved image dispense request message when receiving image dispense request message, and obtains image format information; And communication monitoring timer 1615.Act on behalf of control program 161 through the communication session between communication monitoring timer 1615 monitoring agent servers 1 and code converter 2, image Distributor 3-1～3-N, the terminal 5, and the generation of faults.
As shown in Figure 2, image stream information DB 141 comprises the Session ID, the content designator that is used for unique definite content that are used for unique definite communication session, stores the image request source address of the address at the terminal 5 of sending the image dispense request, the CODEC classification of the coded format of the encapsulation classification of the data packet format of the image Distributor address of expression image distribution source, expression image and expression image.
Image Distributor information D B 143 comprises whether image Distributor address and expression image Distributor have the image classification informing function sign of image classification informing function.Image classification informing function sign is got two values of expression " being " or " denying " respectively, is masked as under the situation of " denying " at image classification informing function, and expression image Distributor does not have the function to acting server 1 notice image classification.In this case, acting server 1 attempts utilizing image dispense request parsing module 1,613 5 to obtain the image data format information from the terminal.
Fig. 3 is that the device of code converter 2 constitutes.Code converter 2 has CPU 22, memory 26, hard disk 24 and the network interface 20 on bus of being connected 28, communicates with the outside via the data packet transceive portion of network interface 20 201.The identifier of the encapsulation classification of the image of in hard disk 24, store the image stream information DB 241 that preserved the information relevant, having preserved controlling object and the right encapsulation classification judging means information D B 243 of evaluation algorithm and preserved the identifier of CODEC classification and the right CODEC classification judging means information D B 245 of evaluation algorithm with the image of controlling object stream.In addition, on memory 26, read and write through the image code converter control program 261 that loads.
Image code converter control program 261 on the memory 26 has: session management module 2611, the session status of management application; Image classification judge module 2613 is resolved image format; Transcoder module 2615 according to the indication from acting server 1, is carried out processing such as the conversion of image transmission rate, CODEC conversion; And communication monitoring timer 2615, image code converter control program 261 is through the communication session between 2615 supervision of communication monitoring timer and the acting server 1, and the generation of faults.
Then, each database institute information of managing is described.Image stream information DB 241 comprises the Session ID that is used for unique definite communication session; The content designator that is used for unique definite content; Store the image request source address of the address at the terminal 5 of sending the image dispense request; The image Distributor address of expression image distribution source; The encapsulation classification of the data packet format of expression image; The encapsulation classification information accuracy of the accuracy of expression encapsulation classification; The CODEC classification information accuracy of the accuracy of the CODEC classification of the coded format of expression image and expression CODEC classification.Encapsulation classification judging means information D B 243 comprise the Session ID that is used for unique definite communication session, the encapsulation classification that is used for unique definite encapsulation and with the corresponding encapsulation classification evaluation algorithm of encapsulation classification.CODEC classification judging means information D B 245 comprises the Session ID that is used for unique definite communication session, the CODEC classification that is used for unique definite CODEC and the CODEC classification evaluation algorithm corresponding with the CODEC classification.
Fig. 4 is that the device of image Distributor 3 constitutes.Image Distributor 3 has CPU 32, memory 36, hard disk 34 and the network interface 30 on bus of being connected 38, communicates with the outside via the data packet transceive portion of network interface 30 301.The image stream information DB 343 that in hard disk 34, stores the content information DB 341 that has preserved the information relevant and preserved the information relevant with the image stream of distribution object with the presentation content of distribution object.In addition, on memory 36, read and write through the image distributing programs 361 that loads.
Image distributing programs 361 on the memory 36 has: session management module 3611, the session status of management application; Data transmit control module 3613, carry out the transmission of image data; And communication monitoring timer 3615.Image distributing programs 361 is through the communication session between 3615 supervision of communication monitoring timer and the acting server 1, and the generation of faults.
Wherein, content information DB 341 comprise the content designator that is used for unique definite content, as the CODEC classification of the coded format of the encapsulation classification of the data packet format of the content-data of distribution object, expression image and expression image.Wherein, the encapsulation classification is represented the file layout of image, and the CODEC classification is represented the coding form of image itself.Therefore,, at first need resolve the encapsulation classification, then resolve the CODEC classification in order to resolve the classification of image data.Image stream information DB 343 comprises Session ID, the content designator that is used for unique definite content, the encapsulation classification that is used for unique definite encapsulation that are used for unique definite communication session, stores the image request source address of the address at the terminal 5 of sending the image dispense request, the CODEC classification of the coded format of the encapsulation classification of the data packet format of expression image and expression image.
The formation of acting server 1 of the present invention and code converter 2 and the formation of the image Distributor 3 relevant with the present invention more than have been described.
In addition, acting server 1 also can be integrated in a management server with code converter 2 and move, and in this case, the formation of management server is to have merged acting server 1 and code converter 2 formation afterwards.Specifically, management server is identical with acting server 1 and code converter 2, has network interface, memory, CUP, hard disk and bus.On memory, comprise and act on behalf of control program 161 and image code converter control program 261; And, on hard disk, comprise image stream information DB 241, image Distributor information D B 143, encapsulation classification judging means information D B 243, coding classification judging means information D B 245.Thus, the parts of the same names among Fig. 1 and Fig. 2 can assemble parts, and the exchanges data of acting server 1 and code converter 2 becomes the exchanges data between each parts between the interior arrangement.But other aspects and principle are identical with as image distribution control system the time.
Then, with reference to Fig. 5～sequential chart shown in Figure 6 the whole action of image distribution control system disclosed by the invention is described.
At first, use Fig. 5 to explain that image Distributor 3 has the situation of the function of notice image classification.
The image distribution processor 5 begins when image Distributor 3 sends image dispense request (S1-01) via acting server 1 from the terminal.The message format of image dispense request adopts the formation of the PF-01 of Figure 11.Shown in the PF-01 of Figure 11, the transmission source address that the image dispense request comprises message and the Session ID that sends destination-address, packet classification (image dispense request), communication session, comprise image request source address, the image Distributor address that comprises the address of image Distributor 3, content designator and the content augmentation information of content being added supplementary notes of address at the terminal 5 of request image distribution.The acting server 1 that receives the image dispense request is set at Session ID, content designator, image request source address and the image Distributor address of image stream information DB 141 respectively with the Session ID that contains in the image dispense request, content designator, image request source address and image Distributor address, thereby in image stream information DB 141, makes new record.
Then, use the image Distributor address of containing in the image dispense request, retrieval image Distributor information D B 143 extracts pairing image Distributor address and image classification informing function sign (S1-04).Here, because image Distributor 3 has the function of notice image classification, so image classification informing function sign is " being ".Acting server 1 be owing to can guarantee to obtain the information relevant with the image classification from image Distributor 3, therefore the image dispense request that is received transferred to the image Distributor 3 (S1-07) shown in the image Distributor address of image dispense request.
The image Distributor 3 that receives the image dispense request from acting server 1 uses the content designator retrieval of content information DB 341 that contains the image dispense request, obtains content data corresponding, encapsulation classification and CODEC classification.Then; Session ID, content designator, image request source address, encapsulation classification and CODEC classification that encapsulation classification that obtains with the Session ID that contains in the image dispense request, content designator, image request source address and from content information DB 341 and CODEC classification are set at image stream information DB 343 respectively, thus new record in image stream information DB 343, made.
Then, session identifier, content designator, image request source address, encapsulation classification and CODEC classification are included in the image classification notice, notice is given acting server 1 (S1-10).The message format of image classification notice adopts the formation of the PF-02 of Figure 11.Shown in the PF-02 of Figure 11, image classification notice comprises the transmission source address and transmission destination-address, packet classification (image dispense request), Session ID, content designator, image request source address, encapsulation classification, encapsulation classification information accuracy, CODEC classification and CODEC classification information accuracy of message.Encapsulation classification information accuracy and CODEC classification information accuracy are represented the correct degree of the information relevant with the CODEC classification with encapsulating classification, can get from 0 to 1 value.In value is 1 o'clock, and expression information is entirely true, and along with numerical value diminishes, the accuracy of information reduces.Get the situation of the value beyond 1 explains about accuracy of information in the back.Because image Distributor 3 maintains the correct information relevant with the CODEC classification with encapsulating classification through content information DB 341, so accuracy of information becomes 1.
And, because it is always correct to imagine the image classification notice of image Distributor transmission, so also can be omitted in the accuracy of information of the image classification notice of step S1-10 transmission.The acting server 1 that receives image classification notice from image Distributor 3 extracts Session ID, encapsulation classification and the CODEC classification that is included in the image classification notice, will be updated to encapsulation classification and the CODEC classification of being extracted with encapsulation classification and the CODEC classification in the record of the corresponding image stream information of the Session ID that is extracted DB 343.Then, pass on the image classification notice (S1-13) that receives at step S1-10 to code converter 2.
At this moment, if do not comprise encapsulation classification information accuracy or CODEC classification information accuracy in the image classification notice, then send and encapsulate the image classification that classification information accuracy or CODEC classification information accuracy be set at respectively after 1 and notify to code converter 2.The code converter 2 that receives image classification notice is comprising Session ID, content designator, image request source address, encapsulation classification, encapsulation classification information accuracy, CODEC classification and the CODEC classification information accuracy that Session ID, content designator, image request source address, encapsulation classification, encapsulation classification information accuracy, CODEC classification and CODEC classification information accuracy are set at image stream information DB241 respectively in the image classification notice, thereby in image stream information DB 241, makes new record.
Then, the image Distributor begins the distribution (S1-16) in the content of step S1-07 request.Arrive code converter 2 (S1-19) with these content corresponding image data via acting server 1.Because code converter 2 has been obtained accuracy of information about the encapsulation classification of image data and CODEC classification in step S1-13 be 1 information, so there is no need to judge and encapsulate classification and CODEC classification.Therefore, code converter 2 can carry out image datas processing such as CODEC conversion, transmission rate conversion, conversion of resolution immediately to the image data of being obtained.The processing that code converter 2 should be carried out can be the processing as the compulsory exercise definition, also can be according to the processing of situation by external dynamic indication action.Realize example as one, for example such shown in the patent documentation 1, calculate the transmission rate of image best in acting server 1, and 2 indications convert the such mode of being calculated of transmission rate into to code converter.The code converter 2 beginning image datas as implied above that receive image data are handled (S1-21), and the image data that code converter 2 was handled finally reaches terminal 5 (S1-22, S1-25) via acting server 1.
Use Fig. 6 to explain that image Distributor 3 does not have the situation of the function of notice image classification below.
Identical with Fig. 5, the image distribution processor 5 begins when image Distributor 3 sends image dispense request (S2-01) via acting server 1 from the terminal.The acting server 1 that receives the image dispense request is set at Session ID, content designator, image request source address and the image Distributor address of image stream information DB 141 respectively with the Session ID that contains in the image dispense request, content designator, image request source address and image Distributor address, thereby in image stream information DB 141, makes new record.
Then, use the address of the image Distributor 3 that contains in the image dispense request, retrieval image Distributor information D B 143 extracts pairing image Distributor address and image classification informing function sign (S2-04).Here, because image Distributor 3 does not have the function of notice image classification, so image classification informing function sign is " denying ".Therefore, acting server 1 is resolved image dispense request message in order to obtain the information relevant with the image classification, attempts extracting and the relevant information information (S2-07, S2-10) relevant with the CODEC classification of encapsulation classification.The information relevant with the image classification can obtain according to content designator or content augmentation information.For example, as the general Uniform Resource Locator (URL) that uses by utilizations such as Hyper Text Transfer Protocol (HTTP) of content designator, in the image Distributor, in most cases URL is the filename of distribution object.And by convention, the filename end is a markup document classification extension name.For example,, then can infer relatedly,, then can understand the animated format that is called Audio Video Interleave (AVI) if extension name is avi with MPEG about CODEC if extension name is mpg.Even obtain under the situation of the information relevant from URL with filename or extension name very difficult; The message field that is called as Content-Type of for example in HTTP, representing content type in addition, such additional information 5 is sent to acting server as the content augmentation information of image dispense request from the terminal.The example of the value that can get as Content-Type has " video/mpeg " or " video/x-msvideo ", and the former representes the MPEG image, and the latter representes the animation of avi form.Resolve image class method for distinguishing and also have a lot, can resolve according to existing technology or principle and be not limited only to said method.
But,, be not always can obtain such information even the method for using is a lot of yet.For example, stipulated " application/octet-stream " such value among the Content-Type in HTTP.Because this value representation arbitrary data stream is so for such value, acting server 1 just is difficult to obtain the information relevant with encapsulation or CODEC.
Shown in above-mentioned example,, obtain fragment property and incomplete information in content designator that acting server 1 possibly contain or the content augmentation information from the image dispense request about the image classification.About concrete processing method, can be according to following four kinds of situations classification.
(situation 1) acting server 1 extracts information relevant with encapsulating classification and the both information relevant with the CODEC classification;
(situation 2) acting server 1 only extracts the information relevant with encapsulating classification;
(situation 3) acting server 1 only extracts the information relevant with the CODEC classification;
The information extraction failure of (situation 4) acting server 1.
According to the classification of the information that extracts, acting server 1 sends to the content change of the image classification notice of code converter 2 in step S2-13.But all be that transmission source address is the address of acting server 1 under any situation in (situation 1) to (situation 4), sending destination-address is the address of code converter 2, and the packet classification is an image classification notice.
In (situation 1), acting server 1 information that the encapsulation classification that extracts is relevant covers in the image classification notice with the information relevant with the CODEC classification.Wherein, these information are the information of being inferred by acting server 1, do not guarantee certain correct; Therefore; According to its accuracy, in encapsulation classification information accuracy and CODEC classification information accuracy, set the value below 1 more than 0 respectively, for example all be set at 0.5 here.
In (situation 2), in image classification notice, can comprise the encapsulation classification, but the CODEC classification is made as sky.In encapsulation classification information accuracy, set the value below 1 more than 0, in CODEC classification information accuracy, set 0.(situation 3) in image classification notice, can comprise the CODEC classification, but encapsulating classification is made as sky too.In encapsulation classification information accuracy, set 0, in CODEC classification information accuracy, set the value below 1 more than 0.
In (situation 4), because acting server 1 do not obtain any information,, in each accuracy of information, set 0 so the encapsulation classification all is made as sky with the CODEC classification, represent that code converter 2 need be in the situation that the does not have information image classification that judges.
In addition, in (situation 1), (situation 2), (situation 3), acting server 1 can be obtained a plurality of information sometimes.For example; In aforesaid Content-Type, be under the situation of " video/mpeg " in value, acting server 1 can judge that CODEC is MPEG; But MPEG 1, MPEG 2, more than 4 classification of MPEG are arranged in MPEG, only depend on above-mentioned information can't conclude which CODEC of expression.Under these circumstances, can consider MPEG 1, MPEG 2, MPEG 4 are distributed the accuracy of information of equal values, perhaps distribute different accuracy of informations.In order to distribute different accuracy of informations, also need further information.Result after the content augmentation information of the image dispense request that for example in to step S2-01, receives is resolved is that the terminal is under the situation of portable terminal device, and the accuracy of information of the MPEG 4 that acting server 1 can be higher with compression ratio is set at the high value of accuracy of information than MPEG 1, MPEG 2.
Extracted at acting server 1 under the situation of a plurality of information, the form of the image classification notice of in step S2-13, sending adopts the formation of the PF-03 of Figure 11.Compare with PF-02, through comprising a plurality of encapsulation classifications and the group of encapsulation classification information accuracy and the group of CODEC classification and CODEC classification information accuracy, can a plurality of information be sent together in the formation of PF-03.
The code converter 2 that receives the image classification notice that accuracy of information, has been set the value beyond 1 from acting server 1 judges whether to need to judge the image classification, and the suitable order (S2-15) of adjustment decision mechanism.Code converter 2 keeps the relevant information of decision mechanism of the image mechanism of each communication session in encapsulation classification judging means information D B 243, CODEC classification judging means information D B 245.Include all encapsulation classification, CODEC classification and evaluation algorithm corresponding that code converter 2 can be judged in these databases with them.When code converter 2 receives the image data of unclassified,, judge the classification of image data through being suitable for these evaluation algorithm one by one.
Figure 12 is the concrete example of encapsulation classification judging means information D B 243, CODEC classification judging means information D B 245.According to shown in Figure 12; About the encapsulation classification; Initial 5 evaluation algorithm that the classification evaluation algorithm is TS, AVI, 3GPP, MOV, ASF that are suitable for, about the CODEC classification, the initial classification evaluation algorithm that is suitable for be MPEG 1, MPEG 2, MPEG 4, H.264, the evaluation algorithm of WMV.In the judgement of image classification, at first encapsulate the judgement of classification, then carry out the judgement of CODEC classification.That is to say that after the evaluation algorithm that is suitable for encapsulation classification judging means information D B 243 from the beginning to the end successively identified the encapsulation classification, the evaluation algorithm that is suitable for CODEC classification judging means information D B 245 was from the beginning to the end successively judged the CODEC classification.
Above method is in the image determination methods of code converter 2 about not obtained fully by the definite image data of Session ID being suitable under the state of any information.But the suitable order of the evaluation algorithm of encapsulation classification, CODEC classification is to change according to the content that the image classification that code converter 2 receives in step S2-13 is notified.
For example; In (situation 1), the encapsulation classification is AVI, and the CODEC classification is MPEG 4; Encapsulation classification information accuracy and CODEC classification information accuracy are appointed as respectively under 0.5 the situation; Code converter 2 upgrades the record of being confirmed by Session ID among encapsulation classification judging means information D B 243, the CODEC classification judging means information D B 245, makes in the encapsulation classification is judged, to be suitable for the AVI evaluation algorithm at first, in the CODEC classification is judged, is suitable for MPEG 4 evaluation algorithm at first.
The example of the state of encapsulation classification judging means information D B 243 after upgrading, CODEC classification judging means information D B 245 has been shown in Figure 13.Comprise in image classification notice under the situation of a plurality of encapsulation classifications, encapsulation classification information accuracy, CODEC classification, CODEC classification information accuracy; According to encapsulation classification information accuracy and CODEC classification information accuracy order from high to low, upgrade encapsulation classification judging means information D B 243, CODEC classification judging means information D B245 respectively.
For example, Figure 14 show in the CODEC classification be that the CODEC classification information accuracy of MPEG 4 or MPEG 2 and MPEG 4 is 0.8, the CODEC classification information accuracy of MPEG 2 is the example of the state of CODEC classification judging means information D B 245 under 0.5 the situation, after upgrading.In the judgement of CODEC classification, MPEG 4 evaluation algorithm will be suitable for early than MPEG 2 evaluation algorithm.And the order that the suitable order of other evaluation algorithm keeps according to system in advance.
In addition, though consider in image classification notice and comprise a plurality of encapsulation classifications or CODEC classification, the encapsulation classification information accuracy of these a plurality of encapsulation classifications or CODEC classification or CODEC classification information accuracy are the situation of identical value.For example, be that the CODEC classification information accuracy of MPEG 2 or MPEG 4 and MPEG 2, MPEG 4 all is under 0.7 the situation in the CODEC classification, which problem of MPEG 2 evaluation algorithm and MPEG 4 evaluation algorithm can appear being suitable for earlier.Here, in this case, be made as the order that keeps in advance according to system.In Figure 12, owing to stipulated in the setting of system that MPEG 2 evaluation algorithm were suitable for before MPEG 4 evaluation algorithm, so the CODEC classification judging means information D B 245 after upgrading becomes shown in figure 15.The order that the suitable order of other evaluation algorithm keeps according to system in advance.
Whether code converter 2 is judged from the encapsulation classification and the CODEC classification of acting server 1 notice correct according to the suitable order by the algorithm of the encapsulation classification judging means information D B 243 after upgrading, CODEC classification judging means information D B 245 appointments.If encapsulation classification, the CODEC classification of appointment are correct through resolving the image dispense request in step S2-07, S2-10 for acting server 1; Then, realize that the image classification of code converter 2 is judged through in the judgement of encapsulation classification, CODEC classification are judged, being suitable for unique evaluation algorithm of initial appointment respectively.If encapsulation classification, CODEC classification mistake from acting server 1 notice; Then be suitable for second and later encapsulation classification evaluation algorithm, CODEC classification evaluation algorithm of appointment among encapsulation classification judging means information D B 243, the CODEC classification judging means information D B 245 successively, carry out the judgement of image classification.
Image classification judgment processing begins when code converter 2 receives image data.That is to say; Acting server 1 will be from the terminal the 5 image dispense request that receive be transferred to image Distributor 3 (S2-19); 3 beginnings of image Distributor are by the distribution (S2-22) of the image data of the content designator appointment that contains in the image dispense request; In the moment acting server 1 will transfer to code converter 2 (S2-25) from the image data that image Distributor 3 receives after, carry out the judgment processing (S2-28) of encapsulation classification, the judgment processing (S2-31) of CODEC classification.
Through above processing; Accomplished in encapsulation classification that encapsulation classification, CODEC classification that the code converter 2 after the judgement of encapsulation classification and CODEC classification will identify store image stream information DB241 into, the CODEC classification, and general's accuracy of information separately is set at 1.Accomplished image data and handled code converter 2 after the required dissection process for the image data classification notified to acting server 1, and image classification notice has been sent to acting server 1 (S2-32).The acting server 1 that receives image classification notice upgrades the corresponding record of image stream information DB141.
After image classification notice was sent to acting server 1, the code converter 2 beginnings image data identical with the step S1-21 of Fig. 5 handled (S2-33).Image data after the processing is sent to acting server 1 (S2-34).The acting server 1 that receives image data from code converter 2 sends to terminal 5 (S2-37) with image data.
Below, with reference to the flow chart of Fig. 8, an example of the control that acting server 1 carries out is described.This flow process is the flow process of carrying out according to the predetermined cycle.Acting server 1 (step F 1-01) when starting makes message sink circulation beginning (step F 1-04), receives the message from network interface 10.
At step F 1-07, the image the dispense request whether message that judgement receives comes self terminal 5.In received message is under the situation of image dispense request, gets into step F 1-25, with reference to image Distributor information D B 143, judges the informing function whether specified image Distributor of image dispense request 3 has the image classification.When judging image Distributor 3 and can notify the image classification, get into step F 1-34, will be from the terminal the 5 image dispense request that receive be transferred to image Distributor 3.
When in step F 1-25, judging out image Distributor 3 and not having image classification informing function; Get into step F 1-28; To from the terminal the 5 image dispense request that receive resolve, extract and encapsulate the relevant information information relevant of classification with the CODEC classification.The information information relevant with the CODEC classification in step F 1-31 that the encapsulation classification of being extracted is relevant sends to code converter 2 as image classification notice.At this moment, encapsulation classification information accuracy and CODEC classification information accuracy are set at the value below 1 more than 0 respectively.
In step F 1-10, under the situation that receives image classification notice from image Distributor 3, whether the received image classification notification message of acting server 1 inspection contains encapsulation classification information accuracy and CODEC classification information accuracy.Under the situation that is not comprising encapsulation classification information accuracy and CODEC classification information accuracy, will encapsulate classification information accuracy and CODEC classification information accuracy and be set at 1 and the image classification is notified transferred to code converter 2 (F1-37) afterwards.
In step F 1-13, receive under the situation of image data from image Distributor 3, acting server 1 transfers to code converter 2 (F1-40) with this image data.In step F 1-16, receive under the situation of image data from code converter 2, acting server 1 transfers to terminal 5 (F1-43) with this image data.Message sink finishes (step F 1-22) when circulating in acting server 1 shutdown (step F 1-19).Through above processing, acting server 1 carries out controlling the image distribution services to the transfer of messages of image Distributor 3 and the judgment processing of image classification according to the image dispense request at terminal 5.
One example of the control of then, carrying out with reference to the flowchart text code converter 2 of Fig. 9.This flow process is the flow process of carrying out according to the predetermined cycle.Code converter 2 (step F 2-01) when starting makes message sink circulation beginning (step F 2-04), receives the message from network interface 20.
At step F 2-07, judge whether the message that receives is the image dispense request from acting server 1.In received message is under the situation of image dispense request, gets into step F 2-19, judges whether the encapsulation classification information accuracy and the CODEC classification information accuracy that comprise in the image dispense request are 1.In encapsulation classification information accuracy or CODEC classification information accuracy is under the situation of other values beyond 1; Get into step F 2-22; According to the encapsulation classification that comprises in the image dispense request, CODEC classification, encapsulation classification information accuracy and CODEC classification information accuracy; Upgrade encapsulation classification judging means information D B 243, CODEC classification judging means information D B 245, the suitable order of adjustment classification evaluation algorithm.
In step F 2-10, receive under the situation of image data, get into step F 2-25, judged whether to accomplish confirming of image classification from acting server 1.When the encapsulation classification information accuracy of image stream information DB 241 and CODEC classification information accuracy all are, be judged as and accomplished confirming of image classification.In step F 2-25, do not confirm to get into step F 2-28 under the situation of image classification, encapsulate the judgment processing of classification, CODEC classification according to encapsulation classification judging means information D B 243, CODEC classification judging means information D B 245.Image data is sent to acting server 1 (F2-31) through after the processing of code converter 2.Message sink finishes (step F 2-16) when circulating in code converter 2 shutdown (step F 2-13).
Through above processing, code converter 2 carries out the judgment processing of image classification as required, and the image distribution services is provided.
Then, with reference to the action of the flow chart brief description of Figure 10 image Distributor 3 when acting server 1 and code converter 2 move as stated.This flow process is the flow process of carrying out according to the predetermined cycle.Image Distributor 3 (step F 3-01) when starting makes message sink circulation beginning (step F 3-04), receives the message from network interface 30.At step F 3-07, judge whether the message that receives is the image dispense request from acting server 1.In received message is under the situation of image dispense request, gets into step F 3-16, judges whether to notify the image classification.Under the situation that can notify the image classification, get into step F 3-19, image classification notice is sent to acting server 1.No matter whether can notify the image classification, the image Distributor 3 that receives the image dispense request all enters into step S-22, and image data is sent to acting server 1.Message sink finishes (step F 2-13) when circulating in 3 shutdown (step F 3-10) of image Distributor.Through above processing, the distribution processor of the image data that image Distributor 3 carries out asking at the terminal.
(second execution mode)
In the first embodiment, all be can judge that with acting server 1 whether image Distributor 3 has image classification informing function is prerequisite, the processing of image distribution control system has been described.
But, also can be the situation that acting server 1 is not managed the information relevant with image Distributor 3, promptly there is not the situation of the image Distributor information D B143 of Fig. 2.The formation of other each device is identical with first execution mode, so detailed.
And, for first execution mode in identical inscape, use identical label to represent, and omit repeat specification.
Below the sequential chart of use Fig. 7 is explained the action of each device in second execution mode.Identical with Fig. 6, the image distribution processor 5 begins when image Distributor 3 sends image dispense request (S3-01) via acting server 1 from the terminal.
The acting server 1 that receives the image dispense request is set at Session ID, content designator, image request source address and the image Distributor address of image stream information DB 141 respectively with the Session ID that contains in the image dispense request, content designator, image request source address and image Distributor address, thereby in image stream information DB 141, makes new record.
Then, acting server 1 is resolved image dispense request message in order to obtain the information relevant with the image classification, attempts extracting and the relevant information information (S3-04, S3-07) relevant with the CODEC classification of encapsulation classification.The extraction of encapsulation classification information and CODEC classification respectively according to Fig. 6 in the identical order of step S2-07, S2-10 carry out.Below; From step S3-10, send the image classifications to code converter 2 and notify the step S3-16 from acting server 1 till image Distributor 3 sends the image dispense request from acting server 1, identical with the order from step S2-13 to step S2-19 among Fig. 6.
At this moment, if image Distributor 3 has the informing function of image classification, can image classification notice be sent to acting server 1 (S3-19).The acting server 1 that receives image classification notice transfers to code converter 2 (S3-22) with this image classification notice.The content of image classification notice is identical with the S1-13 of Fig. 5, and encapsulation classification information accuracy and CODEC classification information accuracy are respectively 1.The code converter 2 that receives accuracy of information and be 1 image classification information there is no need to carry out the judgment processing of image data again.Therefore, the step S1-61 of the processing of later image data and Fig. 5 is to the identical (S3-25～S3-37) of the order of step S1-25.
That is to say; In second execution mode; Acting server 1 does not judge whether image Distributor 3 has image classification informing function, and when receiving image classification notice from image Distributor 3, can set the accuracy of the classification information that obtains from image Distributor 3 higher; Send to code converter 2 with the information that from the image dispense request, parses, confirm by code converter 2.
Other execution modes
In above execution mode, the most preferred execution mode as the present invention has been described.But the present invention is not limited to above-mentioned execution mode.Inventive concept of the present invention has been to adopt acting server to be connected with code converter or has been integrated into the structure that management server moves; Through the image dispense request that proxy server parses is come self terminal, make code converter can analyze correct image classification and carry out the processing of image data.Therefore, so long as above-mentioned design according to the present invention is out of shape above-mentioned execution mode, also embodiment of the present invention certainly.
Particularly those skilled in the art can be clear and definite, even delete parts of some employing in the above-mentioned execution mode or judge irrelevant parts with the image classification for system further optimizes, and also certainly can embodiment of the present invention.
For example, in the above-described embodiment, code converter receives and the encapsulation classification information relevant with the CODEC classification from acting server, judges.But; Code converter also can only obtain wherein a kind of image classification information, carries out the judgement between the candidate, and for other image classifications; Also can directly be suitable for all possible evaluation algorithm successively, find correct image classification according to predefined procedure.
In addition, the processing to image stream in the prior art usually need encapsulate classification and CODEC classification, but other image classifications occur along with the development of technology etc., also can certainly be to the suitable the present invention of these image classifications.
In addition; Comprise all in code converter and the acting server in the above-mentioned execution mode that memory and hard disk come to store respectively needed data and program; But can certainly be not limited to this application to storage device; As long as can realize the parts of memory function, can be various memories such as any semiconductor memory or external memory.And the quantity of memory does not limit yet, as long as can realize the access to data.
In addition; In the above-described embodiment; Each database (for example image stream information DB, image Distributor information D B, encapsulation classification judging means information D B etc.) all is kept in the hard disk in advance, utilizes the image dispense request and the image classification information of sending from the terminal to upgrade.But database of the present invention can not preserved in advance yet, but when judging, sets up record according to image dispense request and image classification information at every turn.And its form also is not limited to the form of being given an example in the above-mentioned execution mode certainly.
In addition, explain in the above-described embodiment, when the image Distributor has image classification informing function or can't from the image dispense request, confirm accuracy, can not comprise image classification information accuracy in the image classification information.On the other hand, when having a plurality of image classification candidate, code converter also can be suitable for the pairing algorithm of each image classification candidate according to preassigned order.
Industrial applicibility:
As stated; In the image distribution control system that the present invention relates to; Utilize acting server, code converter and image Distributor; The various images distribution controls of code conversion problem can be under the situation of the mechanism that notice image classification is set between acting server and the image Distributor, realized having solved, therefore, image distribution services can be applicable to the cooperation of a plurality of different content provider to the terminal.
Claims (15)
1. an image distribution control system is characterized in that,
Comprise acting server and the code converter that is connected with above-mentioned acting server,
Above-mentioned acting server carries out relaying to communicating by letter between the image Distributor of request image terminal of distributing and the image data of managing the distribution object, has:
Network interface communicates via network; And
Image dispense request parsing portion; When receiving the image dispense request of request beginning image distribution from above-mentioned terminal via above-mentioned network interface; Above-mentioned image dispense request is resolved; Extract the information relevant, the information of being extracted is sent to above-mentioned code converter as the image classification information with the image classification;
The image classification information that above-mentioned code converter utilization receives is carried out various image datas according to the indication of above-mentioned acting server to the above-mentioned image data in the distribution and is handled.
2. image distribution control system according to claim 1 is characterized in that,
Above-mentioned image classification information comprises encapsulation classification information or CODEC classification information at least.
3. image distribution control system according to claim 1 is characterized in that,
Every kind of image classification information comprises a plurality of image classification candidates and representes the group of classification information accuracy of this image classification candidate's accuracy accordingly with this image classification candidate.
4. image distribution control system according to claim 3 is characterized in that,
Above-mentioned code converter also comprises image classification information judging part; This image classification information judging part is when receiving above-mentioned image classification information from above-mentioned acting server; The pairing classification information accuracy of a plurality of image classification candidates order from high to low according to every kind of image classification information; The pairing image classification of applicable category accuracy of information candidate's evaluation algorithm is successively confirmed the image classification of image data.
5. image distribution control system according to claim 1 is characterized in that,
Above-mentioned acting server also comprises the informing function judging part; When receiving the image dispense request from the terminal; Whether the represented image Distributor of the above-mentioned image dispense request of this informing function judgement section judges has image classification informing function; Only judging when not having image classification informing function, just the image dispense request is being resolved through image dispense request parsing portion.
6. a management server is characterized in that,
Comprise agency service mechanism and the code conversion mechanism that is connected with above-mentioned agency service mechanism,
Above-mentioned agency service mechanism distributes communicating by letter between the image Distributor of image data of object and carries out relaying to the terminal of request image distribution and management, have:
Network interface communicates via network; And
Image dispense request parsing portion; When receiving the image dispense request of request beginning image distribution from above-mentioned terminal via above-mentioned network interface; Above-mentioned image dispense request is resolved; Extract the information relevant, the information of being extracted is sent to above-mentioned agency service mechanism as the image classification information with the image classification;
Above-mentioned agency service mechanism utilizes the image classification information that receives, and according to the indication of above-mentioned agency service mechanism the above-mentioned image data in the distribution is carried out various image datas and handles.
7. management server according to claim 6 is characterized in that,
Above-mentioned image classification information comprises encapsulation classification information or CODEC classification information at least.
8. management server according to claim 6 is characterized in that,
Every kind of image classification information comprises a plurality of image classification candidates and representes the group of classification information accuracy of this image classification candidate's accuracy accordingly with this image classification candidate.
9. management server according to claim 8 is characterized in that,
Above-mentioned agency service mechanism also comprises image classification information judging part; This image classification information judging part is when receiving above-mentioned image classification information from above-mentioned agency service mechanism; The pairing classification information accuracy of a plurality of image classification candidates order from high to low according to every kind of image classification information; The pairing image classification of applicable category accuracy of information candidate's evaluation algorithm is successively confirmed the image classification of image data.
10. management server according to claim 6 is characterized in that,
Above-mentioned agency service mechanism also comprises the informing function judging part; When receiving the image dispense request from the terminal; Whether the represented image Distributor of the above-mentioned image dispense request of this informing function judgement section judges has image classification informing function; Only judging when not having image classification informing function, just the image dispense request is being resolved through image dispense request parsing portion.
11. an image is distributed the image distribution control method in the control system, it is characterized in that,
This image distribution control system comprises acting server and the code converter that is connected with above-mentioned acting server,
Above-mentioned acting server carries out relaying to communicating by letter between the image Distributor of request image terminal of distributing and the image data of managing the distribution object,
Said image distribution control method comprises:
Above-mentioned acting server receives the step of the image dispense request of request beginning image distribution from above-mentioned terminal via network interface;
Above-mentioned acting server is resolved above-mentioned image dispense request, extracts the information relevant with the image classification, the information of being extracted is sent to the step of above-mentioned code converter as the image classification information; And
Above-mentioned code converter utilizes the image classification information, according to the indication of above-mentioned acting server the above-mentioned image data in the distribution is carried out various image data processed steps.
12. image distribution control method according to claim 11 is characterized in that,
Above-mentioned image classification information comprises encapsulation classification information or CODEC classification information at least.
13. image distribution control method according to claim 11 is characterized in that,
Every kind of image classification information comprises a plurality of image classification candidates and representes the group of classification information accuracy of this image classification candidate's accuracy accordingly with this image classification candidate.
14. image distribution control method according to claim 13 is characterized in that,
Comprise that also above-mentioned code converter is when receiving above-mentioned image classification information from above-mentioned acting server; The pairing classification information accuracy of a plurality of image classification candidates order from high to low according to every kind of image classification information; The pairing image classification of applicable category accuracy of information candidate's evaluation algorithm is successively confirmed the step of the image classification of image data.
15. image distribution control method according to claim 11 is characterized in that,
Comprise that also above-mentioned acting server is when receiving the image dispense request from the terminal; Judge whether the represented image Distributor of above-mentioned image dispense request has image classification informing function; Only judging when not having image classification informing function the step of just the image dispense request being resolved.
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| JP6729502B2 (en) * | 2017-06-20 | 2020-07-22 | 住友電気工業株式会社 | Video service proxy device and video service proxy method |
| US20210099671A1 (en) * | 2018-03-22 | 2021-04-01 | Netzyn, Inc. | System and Method for Redirecting Audio and Video Data Streams in a Display-Server Computing System |
| JP7310212B2 (en) * | 2019-03-27 | 2023-07-19 | 日本電気株式会社 | Data relay device, data relay method and program |
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