CN104661109B - Method, system and the terminal being hidden to the media URI in CDN - Google Patents

Method, system and the terminal being hidden to the media URI in CDN Download PDF

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Publication number
CN104661109B
CN104661109B CN201310585928.6A CN201310585928A CN104661109B CN 104661109 B CN104661109 B CN 104661109B CN 201310585928 A CN201310585928 A CN 201310585928A CN 104661109 B CN104661109 B CN 104661109B
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media
uri
cdn
encrypted
broadcast address
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CN104661109A (en
Inventor
黄小桑
沈昕
祝谷乔
罗传飞
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/6437—Real-time Transport Protocol [RTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • H04N21/2351—Processing of additional data, e.g. scrambling of additional data or processing content descriptors involving encryption of additional data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
    • H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Information Transfer Between Computers (AREA)

Abstract

This disclosure relates to method, system and terminal that a kind of media URI in CDN is hidden.This method includes the broadcast address that media to be played are asked to broadcast address generation module；Encrypted broadcast address is received, and passes through playlist request and encrypted broadcast address is forwarded to CDN；The play list file that CDN is returned is received, wherein, the URI of encrypted the asked each fragment of media is included in play list file；Media file is asked to CDN, to including the URI of encrypted the asked each fragment of media in the request of media file；Receive the media file that CDN is returned.Media URI when the disclosure can be hidden using HAS mechanism.

Description

Method, system and the terminal being hidden to the media URI in CDN
Technical field
This disclosure relates to field of three-network convergence, particularly, is related to a kind of based on HAS（HTTP Adaptive Streaming, HTTP adaptive stream media）Mechanism is to CDN（Content Delivery Network, content distributing network）It is interior Media URI（Uniform Resource Identifier, uniform resource identifier）Method, system and the user being hidden Terminal.
Background technology
In recent years, internet video was grown rapidly, and the flow of video content has accounted for the half of entire internet traffic. It speaks of internet video to would have to mention stream media technology, the continuous development of exactly stream media technology promotes current internet The fast development of video.
Traditional media content distribution technologies mainly have two major class, and one kind is with RTSP（Real Time Streaming Protocol, real-time stream media protocol）/RTP（Real Time Transfer Protocol, real-time transport protocol）To represent Connection-oriented stream media technology, it is another kind of, be under connectionless HTTP that current major video website uses gradual It carries.
So-called progressive download, i.e. terminal player can start before entire media file is downloaded completion The broadcasting of media, if client and server-side support HTTP1.1, terminal can also never be downloaded arbitrary in the part of completion One time point of selection starts to play.
But traditional media content distribution technologies and HTTP progressive downloads technology there are it is certain the defects of, at this moment HAS technologies are come into being, it has merged traditional RTSP/RTP stream media technologys and based on the excellent of HTTP progressive download technologies Point has the characteristics that efficient, expansible and compatible strong.
HAS technologies combine the characteristics of traditional stream media technology and broadcasting of HTTP progressive downloads, in a manner of HTTP Media content is transmitted to user, the use of the technology can greatly promote the media playing experience of user, while the technology reduces The technical sophistication degree of head end server.Transmission mode based on HTTP improve media content in the network device penetrate energy Power, the technology have become the trend of streaming media video industry development at present.
HAS technologies are a kind of distribution of media modes of mixing, and the experience to user is the mode of stream, but actually with HTTP progressive downloads mode equally completes the download distribution of content using http protocol, but these media contents are all cut It is transmitted into a series of media piecemeal, this is a key technology of HAS.The time span of each piecemeal is identical, and one As be 2~10 seconds.
Media piecemeal is stored in HTTP Web servers, and client asks media to Web server in a linear fashion Piecemeal, and carry out in a manner of traditional HTTP the download of media piecemeal, when media piecemeal is downloaded to client, client according to This series of media piecemeal of played in order.Because these media piecemeals are encoded according to the rule of agreement, each media piecemeal Between sleazy overlapping or discontinuous, for a user, then see a seamless smooth result of broadcast.
It should be pointed out that network video service carries out the transmission of media file using CDN to a large amount of user terminal, CDN needs to hide the true URI of media file to user terminal in service process, and chain behavior is stolen to prevent.
In HAS mechanism, client is to access respective media by the media file address included in play list file File still, is only encrypted the address of play list file in the door chain mechanism of existing telecom operators, can not be to broadcasting The media file address included in list file is emplaced to be encrypted.Therefore, the existing door chain of telecom operators under this mechanism Mechanism can not be hidden the URI of the media file in CDN.
Invention content
The disclosure is in view of at least one of problem above proposes new technical solution.
The disclosure provides a kind of side being hidden based on HAS mechanism to the media URI in CDN in terms of one Method, media URI when can hide using HAS mechanism.
The disclosure provides a kind of user terminal in its another aspect, media when can hide using HAS mechanism URI。
The disclosure is provided at its another aspect System, media URI when can hide using HAS mechanism.
According to the disclosure, a kind of method being hidden based on HAS mechanism to the media URI in CDN is provided, including：
The broadcast address of media to be played is asked to broadcast address generation module；
Encrypted broadcast address is received, and passes through playlist request and encrypted broadcast address is forwarded to CDN；
The play list file that CDN is returned is received, wherein, it is each comprising encrypted asked media in play list file The URI of fragment；
Media file is asked to CDN, to including encrypted the asked each fragment of media in the request of media file URI；
Receive the media file that CDN is returned.
In some embodiments of the present disclosure, this method further includes：
CDN sends corresponding encrypted URI after encrypted broadcast address is received, according to encrypted broadcast address To user terminal.
In some embodiments of the present disclosure, corresponding encrypted URI is sent to by use according to encrypted broadcast address The step of family terminal, includes：
Encrypted broadcast address is decrypted；
Couple URI of each fragment of media included with the corresponding play list file of broadcast address after decryption adds It is close；
Play list file of the generation comprising the encryption URI for asking each fragment of media is simultaneously sent to user terminal.
In some embodiments of the present disclosure, this method further includes：
CDN is decrypted the URI of each fragment wherein included after receiving to the request of media file；
And media slicing corresponding with the URI after decryption is sent to the user terminal.
According to the disclosure, a kind of user terminal is additionally provided, including：
Broadcast address request unit, for asking the broadcast address of media to be played to broadcast address generation module；
Broadcast address retransmission unit for receiving encrypted broadcast address, and passes through playlist request and is broadcast encrypted It puts address and is forwarded to CDN；
Listing file receiving unit, for receiving the play list file of CDN returns, wherein, it is wrapped in play list file URI containing encrypted the asked each fragment of media；
Media file request unit, for asking media file to CDN, to including encrypted institute in the request of media file Ask the URI of each fragment of media；
Media file receiving unit, for receiving the media file of CDN returns.
According to the disclosure, a kind of system being hidden based on HAS mechanism to the media URI in CDN is additionally provided, including The user terminal of CDN, broadcast address generation module and previous embodiment.
In some embodiments of the present disclosure, which includes：
URI encryption units, for corresponding encrypted URI to be sent to user terminal according to encrypted broadcast address.
In some embodiments of the present disclosure, URI encryption units include：
Subelement is decrypted in address, for encrypted broadcast address to be decrypted；
Encryption sub-unit operable, the media included for pair play list file corresponding with the broadcast address after decryption are each The URI of fragment is encrypted；
Listing file generates subelement, for generating the playlist for including the encryption URI for asking each fragment of media File cocurrent gives user terminal.
In some embodiments of the present disclosure, which further includes：
URI decryption units are decrypted for the URI to each fragment wherein included；
Media slicing transmitting element, for media slicing corresponding with the URI after decryption to be sent to the user terminal.
In the technical solution of the disclosure, since CDN adds the corresponding URI of each fragment of media file respectively It is close, and encrypted URI has been sent to user terminal by way of play list file so that user terminal can only see Encrypted URI, and then it is stolen that media file is prevented to link.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the disclosure, forms the part of the application.Attached In figure：
Fig. 1 is the stream of method being hidden based on HAS mechanism to the media URI in CDN of an embodiment of the present disclosure Journey schematic diagram.
Fig. 2 is the stream of method being hidden based on HAS mechanism to the media URI in CDN of another embodiment of the disclosure Journey schematic diagram.
Fig. 3 is the structure diagram of the user terminal of an embodiment of the present disclosure.
Fig. 4 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of an embodiment of the present disclosure Structure schematic diagram.
Fig. 5 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of another embodiment of the disclosure Structure schematic diagram.
Fig. 6 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of the another embodiment of the disclosure Structure schematic diagram.
Specific embodiment
The disclosure is described below with reference to accompanying drawings.It should be noted that following description is only explanatory in itself and shows Example property, never as to the disclosure and its application or any restrictions used.Unless stated otherwise, otherwise, implementing The component and the positioned opposite and numerical expression and numerical value of step illustrated in example is not intended to limit the scope of the present disclosure.In addition, Technology well known by persons skilled in the art, method and apparatus may not be discussed in detail, but be meant as in appropriate circumstances Part of specification.
The following embodiments of the disclosure provide it is a kind of based on the network video of HAS mechanism service during in CDN The technical solutions that are hidden of media URI.In the technical scheme, when CDN transmits play list file to user terminal, Media URI wherein included is encrypted, media URI is solved in user terminal requests media content, then by CDN It is close, and then user oriented terminal hides the true URI of media file in CDN through the above way.
Fig. 1 is the stream of method being hidden based on HAS mechanism to the media URI in CDN of an embodiment of the present disclosure Journey schematic diagram.
As shown in Figure 1, the embodiment may comprise steps of：
S102 asks the broadcast address of media to be played to broadcast address generation module；
Specifically, when user terminal thinks that request plays some media file, the broadcast address to network side is needed first Generation module asks the broadcast address of media file to be played.
S104 receives encrypted broadcast address, and passes through playlist request and encrypted broadcast address is forwarded to CDN；
Specifically, broadcast address generation module inquires broadcasting corresponding with the media file according to requested media file Address, and it is sent to user terminal after the broadcast address is encrypted.User terminal is after the encrypted broadcast address is received, directly The encrypted broadcast address is carried in playlist request and is sent to CDN.
S106 receives the play list file that CDN is returned, wherein, encrypted asked matchmaker is included in play list file The URI of each fragment of body；
Specifically, CDN generates play list file according to encrypted broadcast address and returns after playlist request is received Back to user terminal.
S108 asks media file, to including encrypted the asked each fragment of media in the request of media file to CDN URI；
Specifically, user terminal sends out media file request after play list file is received to CDN, in the request The encrypted media URI of user terminal is issued comprising CDN.
S110 receives the media file that CDN is returned；
Specifically, after media file request is sent to CDN by user terminal, CDN extracts encrypted media therein It is decrypted in URI, obtains corresponding media file according to the URI after decryption and is sent to user terminal.
In this embodiment, since CDN encrypts the corresponding URI of each fragment of media file respectively, and will Encrypted URI has been sent to user terminal by way of play list file so that user terminal can only see encrypted URI, and then it is stolen that media file is prevented to link.
Further, after step s 104, encrypted broadcast address is transmitted to CDN by user terminal, and CDN is being received After encrypted broadcast address, corresponding encrypted URI is sent to by user terminal according to encrypted broadcast address.
Specifically, the step of corresponding encrypted URI being sent to user terminal according to encrypted broadcast address can be with Including：
Encrypted broadcast address is decrypted, it should be pointed out that CDN arranges in advance with broadcast address generation module Broadcast address is encrypted the key with decryption, so that CDN can be decrypted correctly after encrypted broadcast address is received Go out broadcast address therein；
Couple URI of each fragment of media included with the corresponding play list file of broadcast address after decryption adds It is close；
Play list file of the generation comprising the encryption URI for asking each fragment of media is simultaneously sent to user terminal.
Further, after step S108, CDN is after receiving to the request of media file, to wherein included each The URI of a fragment is decrypted；
And media slicing corresponding with the URI after decryption is sent to the user terminal.
Fig. 2 is the stream of method being hidden based on HAS mechanism to the media URI in CDN of another embodiment of the disclosure Journey schematic diagram.
As shown in Fig. 2, it describes the CDN door chain flows in the network video service based on the disclosure, in the stream The media URI in play list file is encrypted by CDN in journey, then the media file request of user is solved by CDN It is close, it is that the encryption of closed loop and decrypting process, the process conceal user terminal media file in CDN for CDN True URI.
As shown in Fig. 2, the embodiment may comprise steps of：
S202, user terminal ask broadcast address to broadcast address formation component；
S204, broadcast address generation module generate encrypted broadcast address；
Encrypted broadcast address is returned to user terminal by S206, broadcast address generation module；
S208, user terminal ask broadcasting content according to encrypted broadcast address to CDN, that is, user terminal will be encrypted Broadcast address is carried in the request to play list file and is transmitted to CDN；
S210, according to the encryption and decryption key that CDN and broadcast address generation module are arranged in advance, CDN carries out broadcast address Decryption；
S212, CDN, which are generated, includes the play list file of encrypted media URI, and specifically, CDN is to the broadcasting that receives Location obtains true broadcast address after being decrypted, CDN is wrapped play list file corresponding in true broadcast address The media file URI contained is encrypted, and generation includes the play list file of encrypted media file URI；
The play list file of generation is returned as user terminal by S214, CDN；
S216, user terminal ask media content according to play list file to CDN；
Media URI included in media content request is decrypted in S218, CDN；
Media content corresponding with the media URI of decryption is returned to user terminal by S220, CDN.
It will appreciated by the skilled person that realize that the whole of above method embodiment and part steps can pass through The relevant hardware of program instruction is completed, and aforementioned program can be stored in a computing device read/write memory medium, the journey Sequence when being executed, performs step including the steps of the foregoing method embodiments, and aforementioned storage medium can include ROM, RAM, magnetic disc With the various media that can store program code such as CD.
Fig. 3 is the structure diagram of the user terminal of an embodiment of the present disclosure.
As shown in figure 3, the terminal 30 in the embodiment can include broadcast address request unit 302, broadcast address forwards Unit 304, listing file receiving unit 306, media file request unit 308 and media file receiving unit 310.Wherein,
Broadcast address request unit 302, for asking the broadcast address of media to be played to broadcast address generation module；
Broadcast address retransmission unit 304, for receiving encrypted broadcast address, and pass through playlist request will be encrypted Broadcast address is forwarded to CDN；
Listing file receiving unit 306, for receiving the play list file of CDN returns, wherein, in play list file Include the URI of encrypted the asked each fragment of media；
Media file request unit 308, for asking media file to CDN, to including encryption in the request of media file The URI for asking each fragment of media；
Media file receiving unit 310, for receiving the media file of CDN returns.
In this embodiment, since CDN encrypts the corresponding URI of each fragment of media file respectively, and will Encrypted URI has been sent to user terminal by way of play list file so that user terminal can only see encrypted URI, and then it is stolen that media file is prevented to link.
Fig. 4 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of an embodiment of the present disclosure Structure schematic diagram.
As shown in figure 4, the system 40 in the embodiment can include CDN402, broadcast address generation module 404 and use Family terminal 406.Wherein, user terminal 406 can be realized by previous embodiment.
Fig. 5 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of another embodiment of the disclosure Structure schematic diagram.
As shown in figure 5, compared with the embodiment in Fig. 4, the CDN502 in system 50 in the embodiment can include：
URI encryption unit 502a, for corresponding encrypted URI to be sent to user's end according to encrypted broadcast address End.
Further, URI encryption units can include address decryption subelement, encryption sub-unit operable and listing file generation Unit.Wherein,
Subelement is decrypted in address, for encrypted broadcast address to be decrypted；
Encryption sub-unit operable, the media included for pair play list file corresponding with the broadcast address after decryption are each The URI of fragment is encrypted；
Listing file generates subelement, for generating the played column of the URI comprising encrypted the asked each fragment of media List file is simultaneously sent to user terminal.
Fig. 6 is the knot of system being hidden based on HAS mechanism to the media URI in CDN of the another embodiment of the disclosure Structure schematic diagram.
As shown in fig. 6, compared with the embodiment in Fig. 5, the CDN602 in system 60 in the embodiment can also include URI decryption units 602a and media slicing transmitting element 602b.Wherein,
URI decryption unit 602a, for decrypting the URI of each fragment wherein included；
Media slicing transmitting element 602b, for media slicing corresponding with the URI after decryption to be sent to the user terminal.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with its The difference of his embodiment, identical and similar part can be with cross-reference between each embodiment.For device embodiment For, since it is basicly similar to embodiment of the method, so description is fairly simple, related part may refer to embodiment of the method Partial explanation.
It should be pointed out that disclosure above-described embodiment is suitable for the network video service based on HAS mechanism, it can be with video signal To effectively hiding for the media URL in CDN, to improve the safety of CDN.
Although describe the disclosure with reference to exemplary embodiment, it should be appreciated that the present disclosure is not limited to above-mentioned exemplary Embodiment.It will be obvious to those skilled in the art that it can be changed under conditions of without departing substantially from the scope of the present disclosure and spirit Exemplary embodiments mentioned above.Appended the scope of the claims should be endowed most wide explanation, such to be repaiied comprising all Change and equivalent structure and function.

Claims (5)

  1. A kind of 1. method being hidden based on HAS mechanism to the media URI in CDN, which is characterized in that including：
    The broadcast address of media to be played is asked to broadcast address generation module；
    Encrypted broadcast address is received, and passes through playlist request and encrypted broadcast address is forwarded to CDN, wherein, it is described CDN is decrypted encrypted broadcast address after encrypted broadcast address is received；Pair with decryption after broadcast address it is corresponding The URI of each fragment of media that is included of play list file be encrypted；Generation includes and asks each fragment of media It encrypts the play list file of URI and is sent to user terminal；
    The play list file that the CDN is returned is received, wherein, encrypted asked media are included in the play list file The URI of each fragment；
    Media file is asked to the CDN, to including encrypted the asked each fragment of media in the request of media file URI；
    Receive the media file that the CDN is returned.
  2. 2. the method according to claim 1 being hidden based on HAS mechanism to the media URI in CDN, feature are existed In the method further includes：
    The CDN is decrypted the URI of each fragment wherein included after receiving to the request of media file；
    And media slicing corresponding with the URI after decryption is sent to the user terminal.
  3. 3. a kind of user terminal, which is characterized in that including：
    Broadcast address request unit, for asking the broadcast address of media to be played to broadcast address generation module；
    Broadcast address retransmission unit for receiving encrypted broadcast address, and passes through playlist request and plays ground by encrypted Location is forwarded to CDN, wherein, the CDN is decrypted encrypted broadcast address after encrypted broadcast address is received；It is right The URI of each fragment of media that play list file corresponding with the broadcast address after decryption is included is encrypted；Generation packet The play list file of the encryption URI of each fragment containing asked media is simultaneously sent to user terminal；
    Listing file receiving unit, for receiving the play list file that the CDN is returned, wherein, the play list file In include the URI of encrypted the asked each fragment of media；
    Media file request unit, for asking media file to the CDN, to including encrypted institute in the request of media file Ask the URI of each fragment of media；
    Media file receiving unit, for receiving the media file that the CDN is returned.
  4. 4. a kind of system being hidden based on HAS mechanism to the media URI in CDN, which is characterized in that including CDN, play ground User terminal described in location generation module and claim 3；
    Wherein, the URI encryption units of the CDN include：
    Subelement is decrypted in address, for encrypted broadcast address to be decrypted；
    Encryption sub-unit operable, each fragment of media included for pair play list file corresponding with the broadcast address after decryption URI be encrypted；
    Listing file generates subelement, for generating the play list file for including the encryption URI for asking each fragment of media And it is sent to user terminal.
  5. 5. the system according to claim 4 being hidden based on HAS mechanism to the media URI in CDN, feature are existed In the CDN is further included：
    URI decryption units, the URI of each fragment for being included in the request to media file are decrypted；
    Media slicing transmitting element, for media slicing corresponding with the URI after decryption to be sent to the user terminal.
CN201310585928.6A 2013-11-20 2013-11-20 Method, system and the terminal being hidden to the media URI in CDN Active CN104661109B (en)

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