CN101729509B - Digital information transmission method and digital information transmission system - Google Patents
Digital information transmission method and digital information transmission system Download PDFInfo
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- CN101729509B CN101729509B CN2008102170251A CN200810217025A CN101729509B CN 101729509 B CN101729509 B CN 101729509B CN 2008102170251 A CN2008102170251 A CN 2008102170251A CN 200810217025 A CN200810217025 A CN 200810217025A CN 101729509 B CN101729509 B CN 101729509B
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Abstract
The embodiment of the invention discloses a digital information transmission method and a digital information transmission system. The method of the embodiment of the invention comprises the following steps: receiving a packing request issued by a user terminal through a downloading engine, wherein the packing request comprises an identifier of downloaded content and a path of the downloaded content in a content server; establishing a downloading link with the content server, and acquiring the downloaded content through the downloading link according to the identifier of the downloaded content and the path of the downloaded content in the content server; and packing the acquired downloaded content every time when the downloaded content reaches a preset fixed step length and transmitting the downloaded content after each packing to the user terminal through the downloading engine. Therefore, the waiting time of a user is reduced and the experience of the user is improved.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of digital information transmission method and system.
Background technology
Along with development of Communication Technique; The digital information packaging technique more and more receives utilization widely; Packaging technique is technology and the method that is used for original contents is packaged into the content of extended formatting; After original contents was packaged into the content of special format, these contents can only read, verify its legitimacy through special engine, and its use of may command.Present digital information packaging technique is the scheme that proposes in Digital Right Management (DRM, the Digital Rights Management) interface specification, in this existing scheme; The packaged service device is packed to downloading content earlier, and packing is uploaded to content server after accomplishing, and notice download engine packetized content is downloaded; When downloading bigger content; Because of the packing time longer, thereby the time that the user waits for downloads also can be corresponding longer, poor user experience.
Summary of the invention
In view of this, the present invention provides a kind of digital information transmission method and system, solves when downloading big content, and period of reservation of number is long, experiences poor problem.
A kind of digital information transmission method comprises, receives the packing request that download engine sends, and comprises the sign of downloading content in the packing request and downloads the path of content at content server; The download link of foundation and content server passes through download link acquisition download content according to content identification and download content in the path of content server; When the download content that obtains reaches preset fixed step size, the download content that obtains is packed, the download content after the packing is at every turn sent to download engine;
A kind of digital carrier system; It is characterized in that; Digital carrier system comprises; Download engine; Be used to receive the download request that user terminal is initiated; Comprise the sign of downloading content in the download request; According to download request; Send the packing request to the packaged service device; Comprise the sign of downloading content in the packing request and download the path of content at content server; According to the download content after each packing of the packaged service device transmission that receives, the download content after user terminal sends each packing; The packaged service device; Be used to receive the packing request that download engine sends; Comprise the sign of downloading content in the packing request and download the path of content at content server; Set up download link with content server; Obtain download content in the path of content server by download link according to content identification and download content; When the download content that obtains reaches preset fixed step size, the download content that obtains is packed, the download content after the packing is at every turn sent to download engine;
A kind of packaged service device; Comprise; Receiving element; Be used to receive the packing request that download engine sends; Comprise the sign of downloading content in the packing request and download the path of content at content server; Download unit; Set up the download link of setting up with content server; Obtain download content in the path of content server by download link according to content identification and download content; The packing unit is used for when the download content that obtains reaches preset fixed step size, the download content that obtains being packed; Transmitting element is used for the download content after at every turn packing is sent to download engine;
When the packaged service device of the embodiment of the invention reached preset fixed step size whenever the download content that obtains, the download content that just will obtain was packed, and the download content after will at every turn packing sends to user terminal through download engine; That is to say packs to the download content that reaches fixed step size on one side transmits the content after packing on one side, has reduced period of reservation of number, has improved user experience.
Description of drawings
Fig. 1 is the digital information transmission method basic flow sheet of the embodiment of the invention;
Fig. 2 is the digital information transmission method basic flow sheet of the embodiment of the invention;
Fig. 3 is the digital information transmission method system configuration sketch map of the embodiment of the invention;
Fig. 4 is the packaged service device structural representation of the embodiment of the invention;
Fig. 5 is the download engine structural representation of the embodiment of the invention;
Fig. 6 is the schematic flow sheet of a concrete application examples of digital information transmission method of the embodiment of the invention;
Fig. 7 is the schematic flow sheet of another concrete application examples of digital information transmission method of the embodiment of the invention.
Embodiment
In order to make those skilled in the art better understand content of the present invention, content of the present invention is specified below in conjunction with accompanying drawing and specific embodiment:
The basic procedure of the gradual digital information transmission method of the embodiment of the invention can comprise step with reference to figure 1:
A1, receive the packing request that download engine sends, comprise the sign of downloading content and said download content path in the said packing request at content server;
Particularly, user terminal is initiated download request to download engine earlier, comprises the sign of downloading content in this download request; Go up film off the net like the user, directly click the sign of this film, this download request of download engine response; To comprise the packing request of downloading content identification and send to the packaged service device, and can comprise the sign of downloading content in the packing request and download content in the path of content server, the packing request can be passed through HTTP (HTTP; Hypertext Transfer Protocol) carries; Also can carry, like Routing Table Protocol (RTP, Routing Table Protocol) through other agreement.
The download link of A2, foundation and content server obtains download content in the path of content server through said download link according to said content identification and said download content;
The packaged service device is after receiving the packing request; Send request for building link to content server; Comprise said content identification and said download content path in the described request at content server; The packaged service device obtains original packaged content through download link from content server, can be that content server sends to the packaged service device with the original download content here, also can be that the packaged service device initiatively obtains the original download content.
A3, when the download content that obtains reaches preset fixed step size, the download content of said acquisition is packed, the download content after the packing is at every turn sent to download engine.
Concrete; The content that obtains when the packaged service device whenever reaches fixed step size; Like 128bit, the packaged service device is just packed the content of this 128bit, the download content after at every turn packing is write in the packing request response of carrying with http protocol send to download engine.
Preferably, the packaged service device is preserved the download content after said each packing, and the corresponding download request of download content with after convenient user terminal initiation and the said each packing sends to Download Server with the download content after said each packing.
Further, the packaged service device sends indication information to download engine, and said indication information is used for indication and downloads end point.
The packaged service device be provided with indication information here indication information can be divided into two kinds at least: first kind; Total length after the said download content packaging that the AES that indication information adopts based on packing when initial for packing and the length computation of said download content obtain; Second kind, the Socket end mark that indication information is provided with after accomplishing for packing.
Send indication information to download engine and comprise two kinds of situation at least;
First kind of situation: the Content-Length field that the total length after the said download content packaging that the packaged service device adopts said packing when initial according to packing the AES and the length computation of said download content obtain writes in the packing request response head that carries with http protocol sends to download engine.
Preferably, will pack total length after the said download content packaging that the length computation of the AES that adopts according to packing when initial and said download content obtains of packaged service device writes the packing request response with first bag of accomplishing fluently and sends to download engine.
Second kind of situation: after packing finished, the Socket end mark that the packaged service device will be provided with after will packing and accomplishing write the packing request response of carrying with http protocol and sends to download engine.
The basic procedure of the digital information transmission method of the embodiment of the invention can comprise step with reference to figure 2:
The download request that B1, reception user terminal are initiated comprises the sign of downloading content in the said download request;
Particularly, user terminal is initiated download request to download engine earlier, and this download request kind comprises the sign of downloading content, goes up film off the net like the user, directly clicks the sign of this film.
B2, based on said download request, send the packing request to the packaged service device, comprise the sign of downloading content and download content path in the said packing request at content server;
This download request of download engine response; To comprise the packing request of downloading content identification and send to the packaged service device, comprise the sign of downloading content and this download content in the packing request, and pack and ask to pass through HTTP (HTTP in the path of content server; Hypertext Transfer Protocol) carries; Also can carry, like Routing Table Protocol (RTP, Routing Table Protocol) through other agreement.
Download content after B3, the each packing of sending based on the packaged service device that receives, the download content after user terminal sends said each packing.；
After download engine receives the download content after each packing that the packaged service device sends, the download content after said each packing write in the download request response message send to user terminal.
Further, download engine sends said indication information according to the indication information that the packaged service device that receives sends to user terminal, and said indication information is used for indication and downloads end point.
In this embodiment, comprise two kinds of situation at least:
First kind of situation: the total length after the said download content packaging that the AES that indication information adopts according to packing when initial for packing and the length computation of said download content obtain; After download engine is received the packing request response; Read the total length after the said download content packaging that the length computation of AES that said packing in the Content-Length field adopts according to packing when initial and said download content obtains; The Content-Length field that total length after the said download content packaging that the AES that said packing is adopted according to packing when initial and the length computation of said download content obtain writes in the download request response message head that carries with http protocol sends to user terminal; Total length after the said download content packaging that the AES that adopts according to packing when initial according to said packing simultaneously and the length computation of said download content obtain; Receive the download content after said each packing from the packaged service device, and the download content after said each packing write in the download request response message send to user terminal.
Preferably, download engine is preserved the download content after said each packing, and the corresponding download request of download content with after convenient user terminal initiation and the said each packing sends to user terminal with the download content after said each packing.
When the download process stops suddenly; Download engine reports the breakpoint of download to the packaged service device; The packaged service device calculates the side-play amount and the continuous size that passes content that source file reads; Initiate the download request to same download content when user terminal, the packaged service device begins packing from breakpoint, and the download content after will at every turn packing writes in the packing response message and is transferred to Download Server.
User terminal is after receiving the download response message; Download content after therefrom obtaining at every turn to pack; The progress of the total length prompting user's download after the said download content packaging that the AES that adopts according to packing when initial according to packing and the length computation of said download content obtain is estimated the time that whole download is required
Second kind of situation; The Socket end mark that indication information is provided with after accomplishing for packing; After download engine was received the packing request response, the download content after therefrom obtaining at every turn to pack sent to user terminal with the download content download request response message after said each packing; The Socket end mark that after receiving completion, is provided with, shut-down operation.
User terminal receive download response message after, therefrom obtain the download content after each packing.
Preferably, download engine is preserved the download content after said each packing, and the corresponding download request of download content with after convenient user terminal initiation and the said each packing sends to user terminal with the download content after said each packing.
When the download process stops suddenly; Download engine reports the breakpoint of download to the packaged service device; The packaged service device calculates the side-play amount and the continuous size that passes content that source file reads; Initiate the download request to same download content when user terminal, the packaged service device begins packing from breakpoint, and the download content after will at every turn packing writes in the packing response message and is transferred to Download Server
Embodiments of the invention provide a kind of digital carrier system, and are as shown in Figure 3, comprise,
Download engine 301 is used to receive the download request that user terminal is initiated, and comprises the sign of downloading content in the said download request; According to said download request, send the packing request to packaged service device 302, comprise the sign of downloading content and said download content path in the said packing request at content server; According to the download content after each packing of the packaged service device that receives 302 transmissions, the download content after user terminal sends said each packing.。
Packaged service device 302 is used to receive the packing request that download engine 301 sends, and comprises the sign of downloading content and the said download content path at content server in the said packing request; The download link of foundation and content server obtains download content in the path of content server through said download link according to said content identification and said download content; When the download content that obtains reaches preset fixed step size, the download content of said acquisition is packed, the download content after the packing is at every turn sent to download engine 301.
Packaged service device 302 is further used for sending indication information to download engine, and said indication information is used for indication and downloads end point.
Wherein, indication information comprises, the Socket end mark that the back setting is accomplished in total length after the said download content packaging that the length computation of the pack AES that adopts according to packing when initial and said download content obtains or packing.
When the download process stops suddenly; Packaged service device 302 is further used for the download breakpoint that reports according to download engine; Calculate side-play amount and the continuous size that passes content that source file reads; The same download request of initiating according to user terminal is removed from breakpoint and to be begun packing, and the download content after will at every turn packing writes in the packing response message and is transferred to Download Server.
The example of executing of the present invention provides a kind of packaged service device, with reference to figure 4, comprises,
Receiving element 401 is used to receive the packing request that download engine sends, and comprises the sign of downloading content and the said download content path at content server in the said packing request;
Download unit 402 is set up the download link of setting up with content server, obtains download content in the path of content server through said download link according to said content identification and said download content;
Packing unit 403 is used for when the download content that obtains reaches preset fixed step size, the download content of said acquisition being packed;
Transmitting element 404 is used for the download content after said each packing is sent to download engine.Said transmitting element is further used for, and sends indication information to download engine and user terminal, and said indication information is used for indication and downloads end point.
Wherein, indication information comprises, the Socket end mark that the back setting is accomplished in total length after the said download content packaging that the length computation of the pack AES that adopts according to packing when initial and said download content obtains or packing.
The packaged service device further comprises buffer unit 405, is used for, and is used to preserve the download content after said each packing
The example of executing of the present invention provides a kind of download engine, with reference to figure 5, comprises,
Receiving element 501 is used to receive the download request that user terminal is initiated, and comprises the sign of downloading content in the said download request;
Request unit 502 is used for according to said download request, sends the packing request to the packaged service device, comprises the sign of downloading content and the said download content path at content server in the said packing request;
Transmitting element 503 is based on the download content after each packing of the packaged service device transmission that receives, the download content after user terminal sends said each packing.
Download engine further comprises,
Buffer unit 504 is preserved the download content after said each packing.
For better understanding the foregoing description, be that example describes with a concrete implementation that adopts digital information transmission method below, as shown in Figure 6, comprise user terminal, download engine, the packaged service device, content server, gradual packing process is following:
601, user terminal is initiated the downloading request message Download Resquest with the http protocol carrying to download engine, comprises the sign of downloading content in this request;
602, download engine is initiated the packing request Package Resquest with the http protocol carrying based on this download request to the packaged service device, comprises sign and this path of download content in content server of downloading content in this packing request;
603, packaged service device response packing request is sent request for building link to content server, comprises in this link request and downloads content identification and this download content path in content server;
604, content server is set up response to packaged service device return link; Set up download link between packaged service device and the content server; The packaged service device passes through this link, and obtains accordingly download content with the path of download content in content server from content server according to downloading content identification;
Particularly, can be that content server will be downloaded content and send to the packaged service device, also can be the packaged service device copies the download content on the content server to this locality.
605, in the embodiment of the invention, suppose that downloading the total length scale of content is 128M, when the download content that obtains whenever reaches 128bit; The packaged service device can be packed this 128bit content; And each is provided with same key, correspondingly, also uses same key to decipher during deciphering.The packaged service device accurately calculates the total length after original contents is packed based on the AES of packing employing and the length of original contents, supposes that the total length after the packing is 130M;
606, the content after the packaged service device constantly will be packed writes in the HTTP packing response message; And the total length after the original contents packing of calculating write in the header field of packing response message and send to download engine; In the present embodiment; Promptly write the Content-Length field in the packing response message head that carries with http protocol to the total length 130M after the original contents packing, the packing response message that carries through http protocol sends to download engine;
607, after download engine receives the packing response message with the http protocol carrying; Resolve the message header field; Read the Content-Length field in the packing response message; With the length after the original contents packing that comprises in the Content-Length field, promptly 130M writes with the Content-Length field among the download response message Download Response of http protocol carrying, and receives the time point of ED based on the length control after the original contents packing of the estimation that comprises in the Content-Length field; Before the time point that finishes; Constantly receive the content after packing, it is write in the download response message with the http protocol carrying, and the download response message with the http protocol carrying is sent to user terminal from the packaged service device;
608, user terminal receives the download response message with the http protocol carrying that download engine sends; Content after therefrom obtaining to pack; Read the original contents packing back length 130M in the Content-Length field of downloading in the response message simultaneously; Point out the progress of user's download in view of the above, estimate the time that whole download is required.Optional; Download engine constantly receives the digital content after packing from the packaged service device; When writing it in download response message that carries with http protocol, the packaged content that receives is noted so that after the user initiated same download request, the content that packing is good sent to the user.
Optional; Download engine constantly receives the digital content after packing from the packaged service device, and when writing it in download response message that carries with http protocol, downloading process stops suddenly; Download engine reports the breakpoint of download to the packaged service device; The packaged service device calculates the side-play amount and the continuous size that passes content that source file reads, and when the user initiates same download request, the packaged service device removes from breakpoint and begins packing; And the content after will packing writes packing and is transferred to Download Server in the response message, and the content after will pack by Download Server again writes in the download response message and is transferred to user terminal.
Alternately, downloading request message, download response message, packing request message, packing response message can also carry through other agreement;
In the embodiment of the invention, the packaged service device on one side receives original packaged content from content server, on one side content after the transmission packing give download engine; Reduce period of reservation of number, improved user experience, and in packing response message and download response message, carried the Content-Length field; The original contents packing back length of the estimation that comprises in the Content-Length field; Download the concluding time point with the indication download engine, be convenient to the time point that Download Server control receives ED, also be convenient to user terminal according to the actual content size that downloads to; Prompting user's download progress, and estimate the required duration of whole download.
For better understanding the foregoing description, be that example describes with a concrete implementation that adopts digital information transmission method below, the networking sketch map is as shown in Figure 7; Comprise user terminal, download engine, packaged service device; Download engine, gradual packing process is following:
701, user terminal is initiated the download request Download Resquest with the http protocol carrying to download engine, comprises the sign of downloading content in this request;
702, download engine response download request; And, comprise sign and this path of download content in content server of downloading content in this packing request according to the packing request Package Resquest that this download request is carried with http protocol to the initiation of packaged service device;
703, packaged service device response packing request is sent request for building link to content server, comprises in this link request and downloads content identification and this download content path in content server;
704, content server is set up response to packaged service device return link; Set up link between packaged service device and the content server; The packaged service device passes through this link, and obtains the download content of response based on downloading content identification from content server with the path of download content in content server;
705, in the present embodiment; Downloading the total length scale of content is 128M; When the download content that obtains whenever reaches 128bit; The packaged service device is just packed this 128bit content; And each is provided with same key; The packaged service device accurately calculates the total length after original contents is packed according to the AES of packing employing and the length of original contents, supposes that the total length after the packing is 130M; 706, the content after the packaged service device constantly will be packed writes in the HTTP packing response message; Confirming that all download packings finish the back and in the packing response message of HTTP carrying, the SOCKET end mark are set, and said HTTP packing response message is being sent to download engine;
707, after download engine receives the packing response message that carries with http protocol; Constantly from the packing response message, obtain the content after the packing; And writing in the download response message that carries with http protocol after its packing sent to user terminal, when receiving SOCKET end mark, shut-down operation.
708, user terminal receives the download response message with the http protocol carrying that download engine sends, constantly from downloading the content after response message obtains packing, when receiving the shut-down operation of SOCKET end mark.
In the embodiment of the invention; The packaged service device receives the original download content from content server; On one side the download content that reaches fixed step size is packed; Content after the transmission packing is on one side given download engine; Reduced period of reservation of number; Improved user's experience; And at the packing response message and download the end mark that carries Socket in the response message; Download the concluding time point with the indication download engine; Be convenient to the time point that Download Server control receives ED; Also be convenient to user terminal after downloading end, finish downloading process automatically.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to accomplish through program; This program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
More than to the embodiment of the invention a kind of digital information transmission method and system are provided; Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, in the specific embodiment and range of application.
Claims (15)
1. a digital information transmission method is characterized in that, said method comprises:
The packaged service device receives the packing request that download engine sends, and comprises the sign of downloading content and the said download content path at content server in the said packing request;
Said packaged service device is set up the download link with content server, and obtains download content in the path of content server through said download link according to said content identification and said download content;
When the download content that obtains whenever said packaged service device reached preset fixed step size, said packaged service device was packed the download content of said acquisition, and the download content after will at every turn packing sends to download engine.
2. digital information transmission method according to claim 1 is characterized in that, said method further comprises:
Said packaged service device sends indication information to download engine, and said indication information is used for indication and downloads end point.
3. digital information transmission method according to claim 2 is characterized in that, said indication information comprises:
Total length after the said download content packaging that the length computation of the AES that adopts based on packing when initial and the said download content of packing obtains; Or the Socket end mark that is provided with after the packing completion.
4. digital information transmission method according to claim 1 is characterized in that, the download content after said will at every turn the packing sends to download engine and comprises:
Download content after the packing is at every turn write packing send to Download Server in the response message, send to user terminal so that the download content of Download Server after with said each packing writes in the download response message.
5. digital information transmission method according to claim 1 is characterized in that, said method further comprises:
Said packaged service device or said download engine are preserved the download content after said each packing.
6. digital information transmission method according to claim 3 is characterized in that, and is said to download engine transmission indication information, and said indication information is used for indication download end point and comprises:
Total length after the said download content packaging is write packing send to download engine in the response message; Or,
Said Socket end mark is write packing send to download engine in the response message.
7. digital information transmission method according to claim 5 is characterized in that, said method further comprises:
Download when interrupting; The download breakpoint that reports based on download engine; Said packaged service device calculates downloads the side-play amount and the continuous size that passes content that content reads; And when receiving user terminal when initiating the download request to same download content once more, the content that will pack from breakpoint sends to said user terminal through download engine.
8. a digital carrier system is characterized in that, said digital carrier system comprises:
Download engine is used to receive the download request that user terminal is initiated, and comprises the sign of downloading content in the said download request; According to said download request, send the packing request to the packaged service device, comprise the sign of downloading content and said download content path in the said packing request at content server; According to the download content after each packing of the packaged service device transmission that receives, the download content after user terminal sends said each packing;
The packaged service device is used to receive the packing request that download engine sends, and comprises the sign of downloading content and the said download content path at content server in the said packing request; The download link of foundation and content server obtains download content in the path of content server through said download link according to said content identification and said download content; When the download content that obtains reaches preset fixed step size, the download content of said acquisition is packed, the download content after the packing is at every turn sent to download engine.
9. digital carrier system according to claim 8 is characterized in that, said packaged service device is further used for, and sends indication information to download engine, and said indication information is used for indication and downloads end point.
10. digital carrier system according to claim 9 is characterized in that, said indication information comprises:
Total length after the said download content packaging that the length computation of the AES that adopts based on packing when initial and the said download content of packing obtains; Or the Socket end mark that is provided with after the packing completion.
11. digital carrier system according to claim 10; It is characterized in that; Said packaged service device is further used for, and receives the download breakpoint that download engine reports, and calculates according to said download breakpoint and downloads the side-play amount and the continuous size that passes content that content reads; When receiving said user terminal when initiating the download request to same download content once more, the content that will pack from breakpoint sends to said user terminal through download engine.
12. a packaged service device is characterized in that, said packaged service device comprises:
Receiving element is used to receive the packing request that download engine sends, and comprises the sign of downloading content and the said download content path at content server in the said packing request;
Download unit, the download link of foundation and content server obtains download content in the path of content server through said download link according to said content identification and said download content;
The packing unit is used for when the download content that obtains reaches preset fixed step size, the download content of said acquisition being packed;
Transmitting element is used for the download content after the packing of said packing unit is sent to download engine.
13. packaged service device according to claim 12 is characterized in that, said transmitting element is further used for:
Send indication information to download engine, said indication information is used for indication and downloads end point.
14. packaged service device according to claim 13 is characterized in that, said indication information comprises:
Total length after the said download content packaging that the length computation of the AES that adopts based on packing when initial and the said download content of packing obtains; Or the Socket end mark that is provided with after the packing completion.
15. packaged service device according to claim 14 is characterized in that, said packaged service device further comprises:
Buffer unit is used to preserve the download content after packing in said packing unit.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996844A (en) * | 2005-12-31 | 2007-07-11 | 华为技术有限公司 | A local download method and system |
| CN101083531A (en) * | 2007-07-23 | 2007-12-05 | 中兴通讯股份有限公司 | Method for transmitting, accessing authority hierarchical content in data broadcast and file scrambling method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1996844A (en) * | 2005-12-31 | 2007-07-11 | 华为技术有限公司 | A local download method and system |
| CN101083531A (en) * | 2007-07-23 | 2007-12-05 | 中兴通讯股份有限公司 | Method for transmitting, accessing authority hierarchical content in data broadcast and file scrambling method |
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