CN101017552A - Method for online auditioning and selling digital audiovisual commodity - Google Patents
Method for online auditioning and selling digital audiovisual commodity Download PDFInfo
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- CN101017552A CN101017552A CNA2006100268970A CN200610026897A CN101017552A CN 101017552 A CN101017552 A CN 101017552A CN A2006100268970 A CNA2006100268970 A CN A2006100268970A CN 200610026897 A CN200610026897 A CN 200610026897A CN 101017552 A CN101017552 A CN 101017552A
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Abstract
This invention provides one easy method, which makes consumer download interesting visual files for test to preset the listen times or test time term, wherein, the consumer decides the visual files to buy the authorization codes to visual files to repeat the visual files for long time; to protect visual file edit right person and to prevent the illegal copy with consumer identification information imbedded on visual file and play software with same identification information.
Description
Technical field
The present invention is that the copyright holder for audio-video work provides a kind of technology, makes it pass through this important channel of network, but transmits certain number of times of audition or the audio-video work of a period of time to potential consumer; Also can pass through this platform sales to consumers audio-video work, the consumer plays with own account number only by the audio-video work that this channel is buied, and can prevent effectively that audio-video work is by bootlegging.
Technical background
Along with Internet development, the consumer wishes just can audition or buy the audio-video work of liking by the internet, and the copyright holder of audio-video work also wishes to have audio-video work that some technology guarantee oneself not by bootlegging and propagation simultaneously.Therefore for integrating audition, one of structure between the copyright holder of audio-video work and the consumer presses for very much with the bridge of concluding the business.
Summary of the invention
Following software and hardware of the present invention is formed:
1, a plurality of audio video documents are acted on behalf of Download Server (hereinafter to be referred as acting server): the audio video document that offers consumer's download leaves on this server;
2, audition and selling system commission merchant hold service routine (hereinafter to be referred as commission merchant's service routine): be responsible for handling being about to be downloaded audio video document;
3, audition and selling system user side player plug-in unit or player (hereinafter to be referred as the client terminal playing program);
4, on probation and net is sold LIST SERVER (hereinafter to be referred as LIST SERVER): be responsible for the information material that the consumer locates to register a tame commission merchant is copied to other commission merchant places, deposit all copyright holders' audio video document publisher server information;
5, a plurality of copyright holders' audio video document publisher server (hereinafter to be referred as publisher server) listens a file to leave in advance on this server, each acting server regularly from then on server obtain audio video document;
6, copyright holder's audio video document publisher server end service routine (hereinafter to be referred as the issuing service program).
The invention provides a way easily, make the at first interested works of audition of consumer, the audio-video work copyright holder can set the number of times of restriction audition in advance or limit the time bar of audition, or all set this two audition restrictive conditions simultaneously, if the consumer determines to buy the audio-video work file of having downloaded, can buy authorization code to the audio-video work copyright holder, obtained after the authorization code, authorization code supervisory routine by native system, authorization code is embedded in the audio video document, can long-term unconfined repeat playing.In order to protect the proprietary rights and interests of audio-video work version; except authorization code; the present invention requires the consumer, and no matter still purchase download audio video document is downloaded in audition; registered identification information (as Email) all need be provided; when downloading, download service software will be embedded in to the audio-video work file and consume all identification information, in addition; the user in playout software process of the present invention is installed, also need initialization as identification information (as Email) in playout software.When playout software during at the playback of audio-visual file, can compare identification information in the audio video document and the identification information (as Email) in the playout software of the present invention and whether mate, if do not match, then can not play.
In the generalized case, two different consumers are when installing playout software, and initialized identification information (as Email) can be different, and therefore, the audio-video work that A consumer buys can't directly be play on B consumer's computer.Unless B consumer reinstalls client terminal playing program of the present invention, and initialization the identification information identical with A consumer, otherwise can't play.But when of the present invention, installation procedure of the present invention has the time delay of a setting when reinstalling the client terminal playing program, can need more time than for the first time the client terminal playing program being installed.If B consumer has used A consumer's identification information to reinstall the client terminal playing program in addition, can cause the existing audio video document of the present invention of B consumer oneself to play-over.By above-mentioned way, illegally duplicated arbitrarily thereby limited audio video document effectively.
Usually consumer's audio-video work file of buying of wishing to pay is free to play on the multiple computers of oneself, the present invention can satisfy this demand, even afterwards behind the condition maturity, the audio-video work of having authorized can be copied to mobile phone or MP3 and go up long-term the broadcast, condition is that playout software of the present invention and plug-in unit have been installed on mobile phone or the MP3.
The present invention supports the consumer to skip the audition step, and direct-on-line is downloaded authority, as shown in Figure 3 after paying.
In order to make full use of existing a large amount of Web content service providers (ISP) resource (as the popularity of website, the network bandwidth, high-performance server etc.), the agency mechanism of network enabled content and service provider of the present invention, make content and service provider can serve as commission merchant role in the present invention, coact, and obtain economic return.
The commission merchant holds service routine can link LIST SERVER of the present invention, obtain some copyright holders' audio video document publisher server (hereinafter to be referred as publisher server) information from LIST SERVER, as the IP address, copyright holder's title etc., the also possible artificial publisher server information of obtaining the copyright holder, then according to the information of publisher server, after obtaining copyright holder's agreement and getting access to username and password (perhaps having made the digital certificate form), be connected to the issuing service program on the publisher server, duplicate audio video document to the commission merchant place, provide download service by the commission merchant.The commission merchant can act on behalf of the proprietary works of a plurality of audio-video work versions simultaneously.
Description of drawings:
Fig. 1 is a system hardware framework of the present invention;
Fig. 2 is the operation flow that new user registers in system of the present invention;
Fig. 3 is that the user downloads or buy the operation flow of downloading audio video document by system of the present invention audition;
Fig. 4 is that user charges are bought the audition file authorizing sign indicating number operation flow of having downloaded
Embodiment:
Provide audio video document tabulation on the acting server webpage, the consumer can select " audition " or " purchases " a certain song, if consumer log-on proxy server website not as yet, system jumps to login interface automatically, the first login system of prompting palpus.If the consumer does not register on any acting server as yet, then the consumer must register earlier, on enrollment page, fill in complete log-on message, wherein the consumer among the log-on message " identify label " consumer's " identify label " that must fill in when client player plug-in unit (or player) is installed is consistent, usually consumer's " identify label " is user's Email address, and the English alphabet that comprises in " identify label " capital and small letter when being compared by software of the present invention is insensitive.
To audition and these two different business flow processs of purchase, describe respectively below;
1) download the audition audio video document from acting server, and the flow process of carrying out audition:
1.. on webpage, click the audio video document of planning audition
2.. commission merchant's service routine is embedded in the audition restrictive condition at the audition audio video document
3.. commission merchant's service routine is to encrypted authorization code of issuing service program application
4.. the issuing service program generates authorization code according to audio video document code name and consumer's identify label, and to this encryption
5.. the encrypted authorization code that commission merchant's service routine will return embeds in the audio video document
6.. commission merchant's service routine is embedded in to pay at audio video document buys authorization code webpage URL
7.. commission merchant's service routine is embedded in consumer's identification information of having encrypted at audio video document, as email, and audio video document is encoded
8.. audio video document is downloaded on consumer's computer
9.. the client terminal playing program is play and is opened audio video document, checks whether satisfy the audition condition, if satisfy the audition condition then the playback of audio-visual file
As shown in Figure 3, at first click the audio video document of planning audition on consumer's webpage, serve end program of the present invention will be embedded in audition sign and audition restrictive condition (as restriction audition number of times or restriction audition fate etc.) to audio video document, and playing program of the present invention can be judged the audition restrictive condition before beginning playback of audio-visual file.Next commission merchant's service routine is to authorization code of encrypting (as MD5) through hash algorithm of publisher server application, commission merchant's service routine on the acting server embeds the hash algorithm encrypted authorization code in the audio video document then, and then inserting pays again buys authorization code webpage URL.
2) directly buy audio video document from acting server, and the step of playback of audio-visual file:
1.. on webpage, click and want the audio video document bought
2.. commission merchant's service routine is to authorization code of issuing service program application
3.. the issuing service program generates authorization code according to audio video document code name and consumer's identify label
4.. commission merchant's service routine embeds the authorization code that returns in the audio video document
5.. commission merchant's service routine is encrypted the authorization code that returns, and embeds audio video document then
6.. commission merchant's service routine is embedded in consumer's identification information of having encrypted at audio video document, as email, and audio video document is encoded
7.. audio video document is downloaded on consumer's computer
8.. the client terminal playing program is play and opened audio video document, checks two conditions: 1) whether the consumer's identify label in the audio video document is identical with consumer's identify label of self presetting; 2) the unencryption authorization code in the audio video document is encrypted, again with audio video document in the authorization code encrypted compare, judge whether to equate.If two conditions all satisfy, then the playback of audio-visual file.
As shown in Figure 3, if consumer's selection is " purchase ", system jumps to the online payment page, and the consumer can select any modes of payments to pay, as bank card on-line payment, mobile phone wallet etc.After consumer's paying action is finished, commission merchant's service routine is by application authorization code interface, send an application authorization code message to publisher server, parameter that this application authorization code message comprises has that the commission merchant identifies, commission merchant's password (or adopting digital certificate to carry out identification authentication), copyright owner's audio video document numbering, consumer's identify label, after commission merchant's service routine has obtained authorization code, authorization code is embedded in the audio video document, again an authorization code after hash algorithm is encrypted (as MD5) is embedded audio video document simultaneously.
And then, the present invention inserts in audio video document and has added close consumer's identify label, and consumer's identify label generally is an Email address.The present invention carries out suitable coding to audio video document more then, and changes the extension name of file into " .tbm ".
Next, commission merchant's service routine response consumer's IE down operation request, the file behind the transmission coding is to consumer's computer.The consumer is kept at file on the computer hard disc.
Present widely used media player all provides plug-in unit (plug-ins) interface, as MediaPlayer, RealPlayer etc., there are two kinds of forms in client terminal playing program of the present invention, is respectively plug-in unit (plug-ins) form and independent media's playing program form.Before the file of consumer after opening for the first time the present invention's coding, need download and install the client terminal playing program, can require the consumer to set an identify label character string in the client terminal playing program installation process, be generally an Email address, this identify label require when downloading audio video document before this identify label of input relative with, the big small character of English alphabet is insensitive.If what install is plug-in unit ((plug-ins) form client terminal playing program, after program installs, operating system will be set up expansion " .tbm " by name related with host software (as: Media Player, RealPlayer) or the specialized media player of client plug-in (plug-ins), as long as mouse is double-clicked the file of expansion " .tbm " by name, will be play automatically; If what install is independent media's playing program form, after program installed, operating system will be related with independent media playing program foundation expansion " .tbm " by name.
Client terminal playing program of the present invention is when opening by name " .tbm " audio video document of expansion, at first can read the identify label that the consumer sets when client-side program is installed, then this sign is encrypted, to encrypt again character string that the back generates and audio video document interior encrypt after character string compare, identical as two character strings, then read the content of audio video document, play then; If after the comparison, find that two identify labels are inequality, then Ti Shi user can not play because of authorization limitations could.
System's principal feature:
(1), the identify label of client is when mounted, the consumer sets up on their own, therefore make same consumer same identify label of setting on own multiple computers or other audiovisual playback equipments, be convenient to the user authorized file is duplicated arbitrarily between many own audiovisual playback equipments.Consumer's legitimate interests have fully been guaranteed.
(2), because computer or other audiovisual playback equipments after client-side program of the present invention has been installed, could play the audio video document after the present invention encodes, add close consumer's identify label and include in the audio video document behind the present invention's coding, thereby stoped the digital audio-video file between two consumers, illegally arbitrarily not duplicated.
(3), the present invention fully combines the psychology that most consumers dislike trouble, if B consumer wants to appreciate the audio video document that is licensed to A consumer by the copyright holder, he then needs to reinstall client-side program.In addition, client-side program of the present invention has a delay adjustments when reinstalling, and makes that to reinstall the required time-histories of client-side program longer than required time-histories is installed for the first time.If B consumer has used A consumer's identification information to reinstall the client terminal playing program in addition, can cause the existing audio video document of the present invention of B consumer oneself to play-over.
(4), in order to improve audio-video work copyright holder's sales volume, make things convenient for consumer's audition or buy interested audio-video work, the present invention makes full use of current portal website resource, support portal website as the commission merchant, the agency sells copyright holder's audio-video work, and the consumer only needs to register on a commission merchant website, and LIST SERVER of the present invention copies to subscriber data other commission merchant place automatically, avoid the user to repeat to fill in log-on message by hand, as shown in Figure 2.
(5), the authorization code mechanism of having used of the present invention, after the consumer has downloaded audition audio-video work file, as long as bought authorization code from the commission merchant, and after using authorization code supervisory routine of the present invention that authorization code is embedded the audio-video work file, just can not be subjected to audition playback of audio-visual works file restrictedly, not need to download once more in addition audio-video work file (as shown in Figure 4); Copyright people from institute calculates receivable settlement money by the commission merchant to the number of times of its application authorization code.
Claims (19)
1, online audition of a kind of digital audio-video commodity and selling system is characterized in that, comprising:
A plurality of audio video documents are acted on behalf of Download Server (hereinafter to be referred as acting server);
Audition and selling system commission merchant hold service routine (hereinafter to be referred as the agency service program);
Audition and selling system consumer hold player plug-in unit or player (hereinafter to be referred as the client terminal playing program);
Try out and sell LIST SERVER (hereinafter to be referred as LIST SERVER) on the net;
A plurality of copyright holders' audio video document publisher server (hereinafter to be referred as publisher server);
Copyright holder's audio video document publisher server end service routine (hereinafter to be referred as the issuing service program)
Network system.
2, online audition of a kind of digital audio-video commodity according to claim 1 and selling system, it is characterized in that: the consumer registers on acting server becomes the native system user, each user selects a unique consumer identify label character string different with other users, and identify label is generally E-mail address (Email).The consumer uses identical identify label initialization client terminal playing program when the client terminal playing program is installed.
3, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that: the consumer can select audition after having taken a fancy to an audio video document, perhaps selects to buy.If the consumer selects audition, audition and selling system will be embedded in (audition number of times) or (audition time bar) or (audition number of times+audition time bar) at audio video document.
4, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that:
Download the audition audio video document from acting server, and the step of carrying out audition:
1.. on webpage, click the audio video document of planning audition
2.. commission merchant's service routine is embedded in the audition restrictive condition at the audition audio video document
3.. commission merchant's service routine is to encrypted authorization code of issuing service program application
4.. the issuing service program generates authorization code according to audio video document code name and consumer's identify label, and to this encryption
5.. the encrypted authorization code that commission merchant's service routine will return embeds in the audio video document
6.. commission merchant's service routine is embedded in to pay at audio video document buys authorization code webpage URL
7.. commission merchant's service routine is embedded in the identification information of having encrypted at audio video document, as email, and audio video document is encoded
8.. audio video document is downloaded on consumer's computer
9.. the client terminal playing program is play and is opened audio video document, checks whether satisfy the audition condition, if satisfy the audition condition then the playback of audio-visual file
5, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that:
Obtain the step of duly authorized sign indicating number from acting server:
1.. open the authorization code management function that the client broadcasts program, selected unpaid audition audio video document
2.. authorization code commission merchant web page address is bought in the paying of reading in the audio video document, opens this webpage, and uploads audio video document code name and two parameters of consumer's identify label simultaneously
3.. commission merchant's service routine sends application authorization code message to the issuing service program, and message contains audio video document code name and consumer's identify label
4.. the issuing service program generates authorization code according to audio video document code name and consumer's identify label
5.. commission merchant's service routine is informed the consumer with the authorization code that returns by the webpage mode
6.. the authorization code management function that the consumer uses the client to broadcast program embeds authorization code in the audio video document
6, online audition of a kind of digital audio-video commodity according to claim 1 and selling system, it is characterized in that, after the consumer selects the audition audio video document, audio video document is before being downloaded to consumer's computer end, the agency service program is to authorization code of having encrypted of issuing service program application, and the encrypted authorization code that then will return embeds in the audio video document.
7, online audition of a kind of digital audio-video commodity according to claim 6 and selling system, it is characterized in that: the cryptographic algorithm of encrypted authorization code is a kind of hash algorithm, such as MD5, HMAC SHA1, MAC Triple DES, SHA1, SHA256, SHA384, SHA512 etc.
8, online audition of a kind of digital audio-video commodity according to claim 1 and selling system, it is characterized in that, after the consumer selects to buy audio video document, audio video document is before being downloaded to consumer's computer end, the commission merchant accepts the consumer by some approach and pays, and the agency service program is to authorization code of issuing service program application then.The authorization code that the agency service program is returned the issuing service program is embedded in the audio video document, re-uses the cryptographic algorithm identical with right 4 authorization code is encrypted, and will add close authorization code and embed in the audio video document.
9, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that:
Directly buy audio video document from acting server, and the step of playback of audio-visual file:
1.. on webpage, click and want the audio video document bought
2.. commission merchant's service routine is to authorization code of issuing service program application
3.. the issuing service program generates authorization code according to audio video document code name and consumer's identify label
4.. commission merchant's service routine embeds the authorization code that returns in the audio video document
5.. commission merchant's service routine is encrypted the authorization code that returns, and embeds audio video document then
6.. commission merchant's service routine is embedded in consumer's identification information of having encrypted at audio video document, as email, and audio video document is encoded
7.. audio video document is downloaded on consumer's computer
8.. the client terminal playing program is play and opened audio video document, checks two conditions: 1) whether the consumer's identify label in the audio video document is identical with consumer's identify label of self presetting; 2) the unencryption authorization code in the audio video document is encrypted, again with audio video document in the authorization code encrypted compare, judge whether to equate.If two conditions all satisfy, then the playback of audio-visual file.
10, according to claim 6 or 8 online audition of described a kind of digital audio-video commodity and selling systems, it is characterized in that: no matter be to apply for encrypted authorization code, still apply for the unencryption authorization code, application all include in the message commission merchant's proof of identification (as user name+password digital certificate etc.), audio video document code name, consumer's identify label.The authorization code that returns to the agency service program is to generate according to audio video document code name, two parameters of consumer's identify label, and the authorization code that identical parameter generates is identical.
11, online audition of a kind of digital audio-video commodity according to claim 1 and selling system, it is characterized in that, after the consumer selects audition or buys audio video document, the audition file is before being downloaded to consumer's computer end, and commission merchant's service routine is embedded in the consumer's identify label through encrypting at the audition file.
12, online audition of a kind of digital audio-video commodity according to claim 6 and selling system, it is characterized in that, the audition audio video document is before this is downloaded on consumer's computer, and commission merchant's service routine has been embedded in to pay to audio video document buys the web page address of authorization code.By this webpage, can buy copyright holder's authorization code.
13, online audition of a kind of digital audio-video commodity according to claim 12 and selling system, it is characterized in that, when buying, the consumer provides " audio video document code name " and " consumer's identify label " to the agency service program, the agency service program is forwarded to the issuing service program with these two parameters, the issuing service program generates authorization code, replies to the agency service program, and the agency service program is informed the consumer with authorization code.
14, online audition of a kind of digital audio-video commodity according to claim 13 and selling system is characterized in that, the client terminal playing program provides the subroutine of a supervisor authority sign indicating number, are responsible for authorization code is embedded in the audio video document.
15, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that, the client terminal playing program on consumer's computer can be checked following two broadcast conditions after opening audio video document, before the playback of audio-visual file:
Identical in the condition a, audio video document with User Identity in the client terminal playing program;
Condition b, (comprise authorization code in the audio video document, and authorization code being identical with the authorization code encrypted in the file behind cryptographic calculation) or (current audio video document satisfies the audition restrictive condition)
If condition a and condition b satisfy, allow the playback of audio-visual file, otherwise inform that the consumer can not broadcast, and illustration.
16, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that, LIST SERVER is optionally, are not the necessary assemblies that constitutes native system.
17, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that, publisher server is optionally, are not the necessary assemblies that constitutes native system.When native system is being implemented, can not establish publisher server, the function of issuing service program will be integrated in the agency service program, the authorization code of being responsible for generating authorization code and having been encrypted through hash algorithm by the agency service program.
18, online audition of a kind of digital audio-video commodity according to claim 2 and selling system, it is characterized in that, a certain consumer registers when becoming the native system user on a certain agency service program, be provided with under the situation of LIST SERVER, its log-on message will be uploaded to LIST SERVER by the agency service program, be responsible for sending to other agency service programs by LIST SERVER.
19, online audition of a kind of digital audio-video commodity according to claim 1 and selling system is characterized in that, charges paid is bought the consumer of certain audio video document, can repeatedly download same audio video document, or repeatedly inquire about same audio video document authorization code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100268970A CN101017552A (en) | 2006-05-25 | 2006-05-25 | Method for online auditioning and selling digital audiovisual commodity |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100268970A CN101017552A (en) | 2006-05-25 | 2006-05-25 | Method for online auditioning and selling digital audiovisual commodity |
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| CN101017552A true CN101017552A (en) | 2007-08-15 |
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| CNA2006100268970A Pending CN101017552A (en) | 2006-05-25 | 2006-05-25 | Method for online auditioning and selling digital audiovisual commodity |
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| CN102332133A (en) * | 2011-07-22 | 2012-01-25 | 深圳市财富万方信息技术有限公司 | Virtual item trading method and system using electronic tags |
| CN101699819B (en) * | 2009-11-13 | 2012-07-25 | 中国电信股份有限公司 | Method and system for managing digital rights |
| CN102792328A (en) * | 2010-03-12 | 2012-11-21 | 三星电子株式会社 | Method and apparatus for transmitting and receiving application/content based on purchase information |
| CN104539741A (en) * | 2015-01-26 | 2015-04-22 | 北京奇艺世纪科技有限公司 | Prompting method and prompting device for account login |
| CN106878383A (en) * | 2016-12-30 | 2017-06-20 | 福建星网视易信息系统有限公司 | A kind of Video Applications system and method in digital audio-video place |
| CN107609926A (en) * | 2016-07-12 | 2018-01-19 | 厦门简帛信息科技有限公司 | A kind of digital resource transaction system and method towards multiple support channels user |
| CN108346091A (en) * | 2018-03-05 | 2018-07-31 | 阿里巴巴集团控股有限公司 | Online transaction control method, device, server and storage medium |
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| CN101699819B (en) * | 2009-11-13 | 2012-07-25 | 中国电信股份有限公司 | Method and system for managing digital rights |
| US10121173B2 (en) | 2010-03-12 | 2018-11-06 | Samsung Electronics Co., Ltd | Method and apparatus for transmitting and receiving application/content based on purchase information |
| CN102792328A (en) * | 2010-03-12 | 2012-11-21 | 三星电子株式会社 | Method and apparatus for transmitting and receiving application/content based on purchase information |
| CN102792328B (en) * | 2010-03-12 | 2016-08-10 | 三星电子株式会社 | The method and apparatus sending and receiving application/content based on purchase information |
| CN102332133A (en) * | 2011-07-22 | 2012-01-25 | 深圳市财富万方信息技术有限公司 | Virtual item trading method and system using electronic tags |
| CN104539741A (en) * | 2015-01-26 | 2015-04-22 | 北京奇艺世纪科技有限公司 | Prompting method and prompting device for account login |
| CN107609926A (en) * | 2016-07-12 | 2018-01-19 | 厦门简帛信息科技有限公司 | A kind of digital resource transaction system and method towards multiple support channels user |
| CN106878383A (en) * | 2016-12-30 | 2017-06-20 | 福建星网视易信息系统有限公司 | A kind of Video Applications system and method in digital audio-video place |
| CN108346091A (en) * | 2018-03-05 | 2018-07-31 | 阿里巴巴集团控股有限公司 | Online transaction control method, device, server and storage medium |
| CN108768618A (en) * | 2018-06-07 | 2018-11-06 | 广东工业大学 | A kind of soft core authorization methods of IP based on block chain, device and medium |
| CN108768618B (en) * | 2018-06-07 | 2021-05-11 | 广东工业大学 | IP soft core authorization method, device and medium based on block chain |
| CN109118320A (en) * | 2018-07-16 | 2019-01-01 | 常成信息科技（上海）有限公司 | A kind of transaction system of number text wound product |
| CN113110869A (en) * | 2021-04-13 | 2021-07-13 | 深圳市合信自动化技术有限公司 | Management system for remote downloading program and simultaneously writing agent identification |
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