CN102427555A - Method, device and system for publishing and playing digital program - Google Patents

Abstract

The embodiment of the invention discloses a method, a device and a system for issuing and playing digital programs. The digital program distribution method comprises the following steps: intercepting the digital program, wherein the data fragments obtained by interception are key data fragments, and the data fragments left after interception are non-key data fragments, and the number of the key data fragments is at least one; establishing a corresponding relation between the non-key data fragment and the key data fragment so that a user can obtain the key data fragment according to the non-key data fragment; sending the non-key data fragment to a distributed network node for a user to obtain; and matching the personalized advertisement content according to the user preference, and inserting the advertisement content into the key data fragment. The embodiment of the invention also discloses a method, equipment and a system for playing the digital program. The embodiment of the invention can improve the flexibility of combining and applying the digital program and the advertisement and provide advertisement service for users more pertinently.

Description

A digital program publishing and playing method and its device and system

technical field

The invention relates to the field of media technology, in particular to a digital program publishing and playing method, server, user equipment and network system.

Background technique

With the rapid development of the Internet in recent years, there are more and more websites, and the Internet plays an increasingly important role in people's daily life, study and work. With the development of the Internet, a new commodity form—digital commodity has emerged. Digital goods include e-books, digital movies, digital music, pictures, software, etc. Digital programs belong to the scope of digital goods, including digital movies, digital TV, and digital music. With the development of the Internet, digital programs are more easily accessible to users. Digital programs have the advantages of easy duplication, no damage, rapid dissemination, wide dissemination range, etc. Advertising in digital products has become the mainstream business operation mode at present. advertisment.

Specifically, there are many websites that provide online on-demand services. Online on-demand is a software platform that provides users with multimedia playback based on the Internet, including multimedia playback services such as online broadcasts and online movies. With the continuous maturity of network transmission technology, streaming media technology and copyright service technology, multimedia on-demand services through the Internet are becoming more and more popular, and many online live broadcast platforms have emerged, such as PPLive and PPStream.

When the user is watching on-demand video, the video screen is the main place where the user's eyes stay, so it is an excellent place to place advertisements. Multimedia content providers can insert advertisements in the program data according to their own needs, so that video data and advertisements can be played alternately, so as to obtain advertising revenue.

But now when programs are ordered on the network platform, the way of inserting advertisements in the programs is inflexible, and the same advertisements are provided to all users.

Contents of the invention

Embodiments of the present invention provide a digital program publishing and playing method, its device, and a network system, which can improve the flexibility of combined application of digital programs and advertisements, and provide users with more targeted advertising services.

An embodiment of the present invention provides a method for distributing digital programs, including:

Intercepting the digital program, the intercepted data fragments are key data fragments, the remaining data fragments after interception are non-key data fragments, at least one of the key data fragments; establishing the non-key data fragments and the key data fragments The corresponding relationship between them, so that users can obtain key data fragments according to non-key data fragments; send the non-key data fragments to distributed network nodes for users to obtain; match personalized advertisement content according to user preference information, and send all The above personalized advertising content is inserted into the key data fragment.

An embodiment of the present invention provides a method for playing digital programs, including:

Acquire non-key data fragments from distributed network nodes; request corresponding key data fragments from the server; obtain the key data fragments, which include personalized advertisement content matched according to user preference information; store the key data The segments and the non-critical data segments are merged into a complete digital program; and the complete digital program is played.

An embodiment of the present invention provides a server, including:

The intercepting unit is used to intercept the digital program, the data fragments obtained by interception are key data fragments, the data fragments left after interception are non-key data fragments, and there is at least one key data fragment;

A data fragment marking unit, configured to establish a corresponding relationship between the non-key data fragment and the key data fragment, so that the user can obtain the key data fragment according to the non-key data fragment;

The advertising publishing unit matches the personalized advertising content according to the user's preferences, and inserts the advertising content into the key data segment;

The first data fragment sending unit is configured to send the non-critical data fragments to distributed network nodes for acquisition by users.

An embodiment of the present invention provides a user equipment, including:

A non-critical data segment acquisition unit is used to obtain non-critical data segments from distributed network nodes;

A key data fragment obtaining unit, configured to obtain the key data fragment, the key data including the personalized advertisement content matched according to the user's preference information;

A data fragment merging unit, used for merging key data fragments and non-critical data fragments into a complete digital program;

The playing unit is used to play the complete digital program.

An embodiment of the present invention provides a network system, including:

The server is used to intercept the digital program, the intercepted data segment is the key data segment, the data segment left after the interception is the non-key data segment, and there is at least one key data segment; establish the non-key data segment and the key data segment Correspondence between the fragments, so that the user can obtain the key data fragment according to the non-key data fragment; send the non-key data fragment to the distributed network node for the user to obtain; match personalized information according to the user's preference information Advertising content, inserting the personalized advertising content into key data segments;

The user equipment is used to obtain the non-key data segment from the distributed network node; obtain the key data segment from the server, the key data includes personalized advertisement content matching with the user's preference information; combine the key data segment and the non-key data segment The key data segments are merged into a complete digital program; the complete digital program is played;

The distributed network node is configured to receive the non-critical data segment from the server, store the non-critical data segment, and provide the non-critical data segment to the user.

Through the embodiment of the present invention, the non-key data fragments are sent to the distributed network nodes for users to obtain, and the personalized advertisement content is matched according to the user preference information, and the personalized advertisement content is inserted into the key data fragments, which can improve Combining digital programs and advertisements with the flexibility of applications provides more targeted advertising services to users.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structure diagram of a specific embodiment of the network system in the embodiment of the present invention;

Fig. 2 is a schematic diagram of a specific embodiment of a method for distributing digital programs in an embodiment of the present invention;

Fig. 3 is a schematic diagram of a specific embodiment of a digital program playing method in an embodiment of the present invention;

Fig. 4 is a flow chart of a method for publishing and playing a digital program in an embodiment of the present invention;

Fig. 5 is a schematic diagram of a specific embodiment of the server in the embodiment of the present invention;

FIG. 6 is a schematic diagram of a specific embodiment of user equipment in the embodiment of the present invention;

Figure 7 is a schematic diagram of a specific embodiment of the network system in the embodiment of the present invention

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention provides a digital program publishing and playing method and its equipment and system, which are used to improve the flexibility of combined application of digital program publishing and advertisement.

A specific embodiment of the method for distributing digital programs in the embodiment of the present invention is described below with reference to FIG. 2 , including steps S201 , S203 , S205 , S207 , and S209 . in:

S201. The server intercepts the digital program, the data fragments left after the interception are key data fragments, the data fragments left after the interception are non-key data fragments, and there is at least one key data fragment;

The key data segments are used to carry advertisements; the non-key data segments are main files carrying digital programs;

When intercepting, a method of randomly selecting and intercepting a certain content as a key data segment may be adopted, or a method of averagely intercepting a certain content as a key data segment at a certain time interval may be adopted, or a key data segment may be intercepted at the beginning of a digital program, It is also possible to intercept a key data segment when the upper and lower parts of the digital program are switched or when the upper and lower levels are switched. The specific intercepting method is not limited to the above-mentioned intercepting method, and the key data segment can also be intercepted according to other methods;

When intercepting key data, the time length and content size of the key data segment to be intercepted can be selected as required.

S203. Establish a corresponding relationship between the non-key data segment and the key data segment, so that the user can obtain the key data segment according to the non-key data segment;

Non-critical data segments include program data and header data. The header data may include program information, server network address, location information of key data segments intercepted, copyright information of data programs, digital signatures, etc.; Including program data and identification information; when establishing a corresponding relationship, the web page address of the server and the identification information of the key data segment can be written into the header information of the non-key data, and the identification information of the key data segment can be the key data segment The time stamp, or the number of the interception position, or the frame number and other information that can determine its identity.

S205. Send the non-critical data segment to the distributed network node for the user to obtain;

Users can obtain required non-critical data fragments from distributed network nodes. This process can enhance security by authenticating users; it can also be obtained by users at will.

Non-critical data fragments can be encrypted or not.

S207. Match the personalized advertisement content according to the preference information of the user, and insert the advertisement content into the key data segment;

Specifically, the user may provide preference information, and the server matches the corresponding advertisement content according to the preference information, for example, filling in the preference information when the user registers;

Specifically, it is possible to classify advertisement content by using keywords or combinations of keywords, collect records of keywords or combinations of keywords entered by users online, match corresponding advertisement contents according to the records, and insert the advertisement contents into the In key data fragments;

Advertisements can be classified by keywords or combinations of keywords, and records of keywords or combinations of keywords entered by users online are collected, and corresponding advertisements are matched according to the most entered keywords or combinations of keywords in the records. content, inserting the corresponding advertisement content into the key data segment;

It can collect users' browsing records on certain websites or webpages, match corresponding advertisement content according to the records, and insert the advertisement content into key data segments.

In the embodiment of the present invention, the non-key data segments are sent to the distributed network nodes for users to obtain, and the personalized advertisement content is matched according to the user preference information, and the personalized advertisement content is inserted into the key data segments, which can improve digital program Combined with the flexibility of the application, it can provide advertising services to users in a more targeted manner, thereby increasing advertising revenue.

A specific embodiment of the digital program playing method in the embodiment of the present invention will be described below with reference to FIG. 3 , which can be applied in user equipment. The method includes S301 , S303 , S305 , S307 and S309 .

in:

S301. The user acquires non-critical data fragments from the distributed network nodes.

When the user clicks on the obtained non-key data segment, the user device checks whether the user has a corresponding key data segment file, if there is a corresponding key data segment file, directly execute S307, if there is no corresponding key data segment file, then Run S303. If the user is not yet registered, you can return to the registration interface to help the user register. If the user's authority is insufficient, the user may be prompted to perform corresponding operations, such as payment.

S303. Request the key data segment from the server.

When the server receives the request, it can authenticate the information provided by the user requesting the key data segment. The information used for authentication may include user information, user payment information, client software signature information and user characteristic information, among which:

User information can be the basic information saved on the server when the user registers; user payment information can be used for billing according to different services.

The client software signature information may at least record the serial number, version number, etc. of the client software to confirm the legitimacy and upgrade of the software;

The user feature information may be unique information for determining the user, for example, the user's hardware identity information or IC card identity information.

S305. Obtain key data fragments;

After the key data segment is obtained from the server, it is judged whether the data segment has been encrypted, if not, execute S307; if it has been encrypted, execute S307 after decryption.

S307. Merge the key data segment and the non-key data segment into a complete digital program;

S309. Play the complete digital program.

Optionally, the key data fragments can be destroyed after the playback is completed.

The embodiment of the present invention acquires non-key data segments from distributed network nodes; acquires the key data segments, and the key data segments include personalized advertisement content matched according to user preference information; it can improve the flexibility of combined application of digital programs and advertisements To provide advertising services to users in a more targeted manner.

A specific embodiment of the digital program publishing and playing method in the embodiment of the present invention will be described below with reference to FIG. 4 .

401. The server intercepts the digital program, and the intercepted data fragments are key data fragments, and the data fragments left after the interception are non-key data fragments, and there is at least one key data fragment;

When intercepting, a method of randomly selecting and intercepting a certain content as a key data segment may be adopted, or a method of averagely intercepting a certain content as a key data segment at a certain time interval may be adopted, or a key data segment may be intercepted at the beginning of a digital program, It is also possible to intercept a key data segment when the upper and lower parts of the digital program are switched or when the upper and lower levels are switched. The specific intercepting method is not limited to the above-mentioned intercepting method, and the key data segment can also be intercepted according to other methods;

When intercepting key data, the time length and content size of the key data segment to be intercepted can be selected as required.

403. Establish a correspondence between the non-key data segment and the key data segment, so that the user can obtain the key data segment according to the non-key data segment;

Non-critical data segments include program data and header data. The header data may include program information, server network address, location information of key data segments intercepted, copyright information of data programs, digital signatures, etc.; Including program data and identification information; when establishing a corresponding relationship, the web page address of the server and the identification information of the key data segment can be written into the header information of the non-key data, and the identification information of the key data segment can be the key data segment The time stamp, or the number of the interception position, or the frame number and other information that can determine its identity.

405. Send the non-critical data segment to the distributed network node for the user to obtain;

The user can go to the node to obtain the required non-critical data fragments. This process can authenticate the user; it can also be obtained by the user at will.

Non-critical data fragments can be encrypted or not.

407. The user acquires non-critical data fragments.

When a user clicks on the obtained non-key data segment, the user device will check whether the user has the corresponding key data segment file, if there is, directly execute 415 , if not, execute 413 . If the user is not yet registered, you can return to the registration interface to help them register. If the user's authority is not enough, it can be prompted to perform corresponding operations, such as payment.

409. Match the personalized advertisement content according to the preference information of the user, and insert the advertisement content into the key data segment;

The user can provide preference information, and the server can match the corresponding advertisement content according to the preference information, for example, fill in the preference information when the user registers;

Advertisements can be classified by keywords or combinations of keywords, and records of keywords or combinations of keywords entered by users on the Internet can be collected, corresponding advertisement contents can be matched according to the records, and the advertisement contents can be inserted into the key data in the fragment;

Advertisements can be classified by keywords or combinations of keywords, and records of keywords or combinations of keywords entered by users online are collected, and corresponding advertisements are matched according to the most entered keywords or combinations of keywords in the records. content, inserting the corresponding advertisement content into the key data segment;

It can collect users' browsing records on certain websites or webpages, match corresponding advertisement content according to the records, and insert the advertisement content into key data segments.

411. Send the key data segment to the user;

Optionally, before sending the key data segment to the user, copyright processing can also be performed on the key data segment; including watermarking, encryption or a combination of the two;

Specifically, such as watermarking, the key data segment is watermarked according to the user authentication information. The added watermark can be explicit or implicit. Once the digital program is illegally disseminated in the future, it can watermark to identify the infringer.

Specifically, such as encryption, the key data segment is encrypted.

413. Obtain key data fragments

After obtaining the key data segment, judge whether the data segment has been encrypted, if not, go to 415 directly; if it has been encrypted, go to 415 after decryption.

415. Merge the key data segment and the non-key data segment into a complete digital program;

417. Play the complete digital program after obtaining it.

Optionally, the key data fragments are destroyed after the playback is completed.

The embodiment of the present invention can also improve the security of combined application of digital programs and advertisements by providing methods for authenticating, adding watermarks, encrypting and destroying key data segments, preventing illegal users from viewing digital programs, and ensuring the interests of digital program providers.

A specific embodiment of the server in the embodiment of the present invention is described below in conjunction with FIG. 5, including:

The intercepting unit 501 is configured to intercept the digital program, the data segment obtained by the interception is a key data segment, the data segment left after the interception is a non-critical data segment, and there is at least one key data segment;

A data fragment marking unit 503, configured to establish a corresponding relationship between the non-key data fragment and the key data fragment, so that the user can obtain the key data fragment according to the non-key data fragment;

Advertisement publishing unit 505, matching personalized advertisement content according to user's preferences, and inserting the advertisement content into the key data segment;

A data segment sending unit 507, configured to send the non-critical data segment and/or the critical data segment.

Optionally, the server may also include: an authentication unit, used for user authentication;

Optionally, the server may also include: an encryption unit, configured to encrypt the data segment;

Optionally, the server may further include: a watermark processing unit, configured to add a watermark to the key data segment according to user authentication information.

The embodiment of the present invention provides a specific embodiment of a server, which can improve the flexibility of combined application of digital programs and advertisements, provide advertisement services to users in a more targeted manner, and increase advertisement revenue.

A specific embodiment of the user equipment in this embodiment is described below in conjunction with FIG. 6, including:

A non-key data fragment obtaining unit 601, configured to obtain the non-key data fragment;

A key data fragment obtaining unit 603, configured to obtain the key data fragment, the key data including the personalized advertisement content matched according to the user's preference information;

A data fragment merging unit 605, configured to merge key data fragments and non-critical data fragments into a complete digital program;

The playback unit 607 is configured to play the complete digital program.

Optionally, the user equipment may further include: a characteristic information processing unit, configured to detect hardware identity information or IC card identity information of the user.

Optionally, the user equipment may further include: a decryption unit, and when the local key is consistent with the key in the key data segment, the decryption is successful.

The user equipment in this embodiment of the present invention may be equipment such as a computer, a mobile phone, a set-top box, and a television.

The embodiment of the present invention provides a specific embodiment of the user equipment, which can improve the flexibility of combined application of digital programs and advertisements, provide advertisement services to users in a more targeted manner, and increase advertisement revenue.

A specific embodiment of a network system in the embodiment of the present invention is described below in conjunction with FIG. 7 , including:

The server 500 is configured to intercept the digital program, the intercepted data segments are key data segments, the remaining data segments after interception are non-key data segments, and there is at least one key data segment; establish the non-key data segment and The corresponding relationship between the key data segments, so that the user can obtain the key data segments according to the non-key data segments; match the personalized advertisement content according to the user's preferences, and insert the advertisement content into the key data segments ;

The user equipment 600 is configured to obtain the non-key data segment from the distributed network node; obtain the key data segment, the key data has been inserted into the personalized advertisement content matched according to the user's preference information; combine the key data segment and merging non-critical data segments into a complete digital program; playing said complete digital program;

The distributed network node 700 is used for storing non-critical data fragments; providing non-critical data fragments to users. Distributed network nodes can be devices such as computers, servers, or mobile phones on the Internet or in a local area network.

The specific composition and structure of the server 500 and the user equipment 600 may be as described in the foregoing embodiments, and may also be modified according to actual needs.

In the embodiment of the present invention, the server matches the personalized advertisement content according to the user's preferences, and inserts the advertisement content into the key data segment; the user device obtains the non-key data segment from the distributed network node; obtains the key data segment from the server. Data fragments; can improve the flexibility of combined application of digital programs and advertisements, and provide advertisement services to users in a more targeted manner, thereby increasing advertisement revenue.

Each step in the embodiment of the present invention can be adjusted according to actual needs. Each unit in the embodiment of the present invention can be integrated into one body, or can be deployed separately. The above units can be combined into one unit, and can also be further divided into multiple sub-units. Various devices of the system in the embodiment of the present invention can be integrated into one body, or can be deployed separately. The above-mentioned devices can be combined into one unit, and can also be further split into multiple subunits.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM, disk , CD, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments of the present invention.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (18)

1. the dissemination method of a digital program is characterized in that, comprising:

Digital program is carried out intercepting, and the data slot that intercepting obtains is the critical data fragment, and the data slot of leaving over after the intercepting is the non-critical data fragment, and said critical data fragment is at least one;

Set up the corresponding relation between said non-critical data fragment and the said critical data fragment, so that the user obtains the critical data fragment according to the non-critical data fragment;

Said non-critical data fragment is sent to distributed network node, obtain for the user;

According to user preference information coupling personalized advertisement content, insert said personalized advertisement content in the said critical data fragment.

2. the dissemination method of digital program according to claim 1 is characterized in that,,, after in the said personalized advertisement content insertion critical data fragment, also comprises according to user preference information coupling personalized advertisement content said:

Send said critical data fragment to said user.

3. the dissemination method of digital program according to claim 2 is characterized in that,, before the user sends said critical data fragment, also comprises said:

User to asking said critical data fragment carries out authentication;

If said user then sends said critical data fragment to the user through authentication.

4. the dissemination method of digital program according to claim 3 is characterized in that, if after said user passes through authentication, also comprise:

According to user authentication information said critical data fragment is added watermark.

5. the dissemination method of digital program according to claim 1 is characterized in that, said said non-critical data fragment is sent to distributed network node before, also comprise:

Said non-critical data fragment is encrypted.

6. according to the dissemination method of each described digital program of claim 1～5, it is characterized in that, also comprise:

Said critical data fragment is encrypted.

7. the player method of a digital program is characterized in that, comprising:

Obtain the non-critical data fragment from distributed network node;

To the corresponding critical data fragment of server requests;

Obtain said critical data fragment, comprise personalized advertisement content in the said critical data fragment according to the user preference information coupling;

Said critical data fragment and said non-critical data fragment are merged into complete digital program;

Play said complete digital program.

8. the player method of digital program according to claim 7 is characterized in that,, also comprises during to the corresponding critical data fragment of server requests when said:

Send user authentication information to said server, carry out authentication for server.

9. according to the player method of claim 7 or 8 described digital programs, it is characterized in that, said obtain said critical data fragment after, also comprise:

Said critical data fragment is deciphered.

10. the player method of digital program according to claim 7 is characterized in that, after the said complete digital program of said broadcast, also comprises:

Said critical data fragment is destroyed.

11. a server is characterized in that, comprising:

Interception unit is used for digital program is carried out intercepting, and the data slot that intercepting obtains is the critical data fragment, and the data slot of leaving over after the intercepting is the non-critical data fragment, and said critical data fragment is at least one;

The data slot indexing unit is used to set up the corresponding relation between said non-critical data fragment and the said critical data fragment, so that the user obtains said critical data fragment according to said non-critical data fragment;

The ad distribution unit, the preference information coupling personalized advertisement content according to the user is inserted into said ad content in the critical data fragment;

The first data slot transmitting element is used for said non-critical data fragment is sent to distributed network node, obtains for the user.

12. server according to claim 11 is characterized in that, also comprises:

Authenticating unit is used for said user is carried out authentication;

The second data slot transmitting element if be used for said user through authentication, then sends said critical data fragment to the user.

13. according to claim 11 or 12 described servers, it is characterized in that, also comprise:

Ciphering unit is used for said non-critical data fragment or said critical data fragment are encrypted.

14. a subscriber equipment is characterized in that, comprising:

Non-critical data fragment acquiring unit is used for obtaining the non-critical data fragment from distributed network node;

Critical data fragment acquiring unit is used to obtain the critical data fragment, comprises the personalized advertisement content that the preference information with the user is complementary in the said critical data;

The data slot merge cells is used for said critical data fragment and said non-critical data fragment are merged into complete digital program;

Broadcast unit is used to play said complete digital program.

15. subscriber equipment according to claim 14 also comprises:

The authentication information transmitting element is used for sending user authentication information to server, carries out authentication for said server.

16. according to claim 14 or 15 described subscriber equipmenies, it is characterized in that, also comprise:

Decryption unit is used for said non-critical data fragment or said critical data fragment are deciphered.

17. a network system is characterized in that, comprising:

Server is used for digital program is carried out intercepting, and the data slot that intercepting obtains is the critical data fragment, and the data slot of leaving over after the intercepting is the non-critical data fragment, and said critical data fragment is at least one; Set up the corresponding relation between said non-critical data fragment and the said critical data fragment, so that the user obtains said critical data fragment according to said non-critical data fragment; Said non-critical data fragment is sent to distributed network node, obtain for the user; According to user's preference information coupling personalized advertisement content, insert said personalized advertisement content in the critical data fragment;

Subscriber equipment is used for obtaining said non-critical data fragment from distributed network node; Obtain said critical data fragment from said server, comprise the personalized advertisement content that the preference information with the user is complementary in the said critical data; Critical data fragment and non-critical data fragment are merged into complete digital program; Play said complete digital program;

Distributed network node is used to receive the said non-critical data fragment from said server, stores said non-critical data fragment; To the user said non-critical data fragment is provided.

18. network system according to claim 17 is characterized in that, said server comprises:

Interception unit is used for digital program is carried out intercepting, and the data slot that intercepting obtains is the critical data fragment, and the data slot of leaving over after the intercepting is the non-critical data fragment, and said critical data fragment is at least one;

The data slot indexing unit is used to set up the corresponding relation between said non-critical data fragment and the said critical data fragment, so that the user obtains said critical data fragment according to said non-critical data fragment;

The ad distribution unit, the preference information coupling personalized advertisement content according to the user is inserted into said ad content in the critical data fragment;

The first data slot transmitting element is used for said non-critical data fragment is sent to distributed network node, obtains for the user.

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