CN101262454A - Method and system for publishing network digital media content - Google Patents

Abstract

The invention provides a method for distributing digital media content on the Internet. The method includes the following steps: organize the published content into a content resource package, submit a content publishing request message to the authentication server; execute the authentication server to select a resource server according to the content publishing request message; return the selected resource server information and connection license to the publisher; The execution publisher uses the connection license to deliver the content resource bundle to the selected resource server. The method provides a reliable and efficient method for publishing content, realizes a dynamic balance mechanism of system load, and reduces resource deployment overhead.

Description

Method and system for publishing network digital media content

technical field

The invention relates to the field of computer interconnection communication, and further relates to a method and a system for realizing content release when digital media management is performed on the network.

Background technique

Digital media refers to all kinds of valuable digital information and content accumulated by organizations or individuals in the process of operation and production, which may be stored in various formats, expressed as text, graphics, images, data, etc. , video, animation and other forms. The popularity of the Internet and the development of broadband technology provide conditions for digital media network management and promote the emergence of digital media content network distribution platforms. The construction of networked digital media services can expand the scope of digital media content transmission, accelerate its transmission speed, and improve resource utilization efficiency. Providers of digital media content use the Internet to distribute digital media, which not only enriches the original sales channels, expands consumer groups, provides consumers with more convenient access to digital content, but also combines digital copyright protection Technology, prevent piracy, guarantee distribution income, and have high commercial value. Content publishing is a necessary part of digital media content management, used by content providers to publish their own digital media resources to content servers or server groups in the network, so that the digital content distribution system can provide end consumers with Serve.

The existing digital media content distribution structure is based on the client-server model, and resource servers or server groups are set up in the digital media resource center. The basic steps are as follows: the content provider, that is, the publisher, adds the description and control information of the media content to be published into a resource package, connects to each resource server to be deployed, and requests to upload resources; the resource server communicates with the authentication server, and passes the identity verification After authorization and authorization, the publisher is allowed to upload; the publisher uploads the resource packages to the designated resource servers respectively, for end users to connect to these servers to download resources. This service model is simple, easy to deploy, and easy to manage. However, with the increase of users, the demand for media resources is also increasing exponentially. This model gradually shows its disadvantages, such as poor security, single-point bottlenecks, and resource download speed. Slow, request response time is too long, etc. It is worth noting that the total amount of resource storage involved in digital media content management is often huge, and is usually distributed and stored in multiple locations. Different media content access services are provided for different end users. In addition, publishers of digital media content can come from different geographical locations and have different operating permissions. When publishing content, the system needs to be transparent to publishers, shield the actual storage location, and provide identity authentication and authorization as well as resource delivery Encryption support. The current content release method and system cannot meet the above requirements, which limits the extensive development of digital media network distribution services.

Contents of the invention

In order to overcome the deficiencies of the existing system, in view of the needs of digital media network publishing services, the present invention proposes a method and system for publishing digital media content on the network, which can prevent resource information from being maliciously tampered with and impersonated; at the same time, it also improves the publishing efficiency and realizes fast Distributed deployment of resources.

In order to achieve the above object, according to one aspect of the present invention, a method for publishing network digital media content is provided, which includes the following steps:

1) Organize the content to be released into a content resource package, and submit a content release request message to the authentication server;

2) The authentication server selects a resource server according to the content release request message;

3) The authentication server returns the selected resource server information and connection license to the publisher;

4) The publisher uses the connection license to deliver the content resource package to the selected resource server.

According to another aspect of the present invention, step 4) of the above-mentioned network digital media content distribution method includes step 5) that the selected resource server distributes the content resource package to the designated server.

According to yet another aspect of the present invention, step 5) of the above-mentioned network digital media content publishing method adopts a layered parallel distribution method of an end server, including the following steps:

51) arrange the end server node sequence;

52) According to the node sequence, determine the superior-subordinate relationship between the nodes;

53) Establishing a logical hierarchical tree of end servers according to the upper-lower relationship between the nodes;

54) Executing the selected resource server to distribute the content resource package to the specified end server according to the end server logical hierarchy tree.

According to yet another aspect of the present invention, the step 54) of the above-mentioned network digital media content publishing method comprises the following steps:

541) Executing the selected resource server to establish a forwarding tree of the content resource package according to the content resource package and the logical hierarchical tree of the end server;

542) Execute delivering the resource package and the forwarding tree information to the child node of the selected resource server;

543) Execute the child node of the selected resource server to judge whether it is a leaf node of the forwarding tree, if yes, then end, otherwise, execute step 544);

544) Transfer the resource package and the forwarding tree information to the designated end server according to the forwarding tree information.

According to yet another aspect of the present invention, the content release request message in step 1) of the above-mentioned network digital media content release method includes publisher identity information and release request information.

According to yet another aspect of the present invention, the step 2) of the above-mentioned network digital media content publishing method includes accessing a database server according to the publisher request message to obtain a publisher's certificate, thereby checking the publisher's authority.

According to another aspect of the present invention, step 2) of the above-mentioned network digital media content distribution method includes:

judging whether the resource server is available according to the content release request message;

Select the optimal resource server from the available resource servers according to the processing capacity, load conditions and network bandwidth.

According to yet another aspect of the present invention, the connection license in step 3) of the above-mentioned network digital media content distribution method is dynamic.

According to yet another aspect of the present invention, the present invention also provides a network digital media content distribution system, the distribution system includes a publisher, an authentication server, a resource server and a database server, wherein:

The publisher is used to organize the content to be published into a content resource package, submit a content release request message to the authentication server, and use the connection license to transfer the content resource package to the selected resource server;

The authentication server is used to select a resource server according to the content publishing request message, and return the information of the selected resource server and the connection license to the publisher.

According to yet another aspect of the present invention, the above-mentioned network digital media content distribution system further includes an end server group, configured to receive the content resource package from the selected resource server.

According to yet another aspect of the present invention, the terminal server group of the above-mentioned network digital media content distribution system is a logical hierarchical tree structure, wherein the upper and lower nodes y→x in the logical hierarchical tree have at least one of the following characteristics:

1) Node x needs to pass through node y to access the selected resource server;

2) The network overhead for the node x to directly access the selected resource server is greater than the overhead for the node x to access the node y.

Compared with the prior art, in addition to improving the security of content publishing, the method also provides a resource distributed deployment technology based on a system load dynamic balance mechanism. The advantages of this method are embodied in the following aspects:

1) Good security: The publisher of digital media content does not directly obtain the location information of the resource server when publishing the content, but after passing the identity authentication, the authentication server measures the load level of each resource server and dynamically selects the resource server. The server to be stored for the content ontology generates a temporary license to connect to the server and returns it to the publisher, which is used to connect to the resource server and encrypt data when publishing the content. This not only prevents illegal publishers from randomly publishing to the network, reduces the possibility of network attacks, but also prevents digital media content from being stolen during network transmission.

2) In the content publishing process, an appropriate resource server is automatically selected according to the location of the content to be released, the storage capacity of the resource server, and the network status to transmit and store the digital media content ontology. In addition, when digital media content is distributed on multiple end servers, the layered parallel distribution technology is adopted, which can make full use of network bandwidth resources and quickly realize the distributed deployment of resources.

3) Transparency: When publishing content, the publisher only needs to provide the content ontology and the list of end servers to be deployed, and does not need to care about the storage situation of the resource server in the digital media center, nor does it need to know how resources are distributed to multiple end servers. The specific path of distribution, which simplifies the operation process and brings convenience to the publisher.

Description of drawings

Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail, wherein:

Fig. 1 is a schematic diagram of a network digital media content release system;

Fig. 2 is the processing process of content publishing by the publisher;

Fig. 3 is the processing procedure of the authentication server;

Fig. 4 is the generation process of the logical hierarchy tree of the end server of the system;

Fig. 5 is the processing procedure of the resource server;

Fig. 6 is the processing procedure of the end server.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings and through specific examples:

Fig. 1 is a schematic diagram of a network digital media content publishing system according to an embodiment of the present invention. As shown in Figure 1, the content publishing system adopts a distributed architecture, which is composed of publishers, geographically dispersed central server groups and end server groups. A publisher is a provider of digital media content, which can be an organization or an individual. It can own the intellectual property rights of the content to be published and has obtained a digital certificate for content release. The central server group is a group of servers set up in the digital media center, including authentication servers, resource servers, database servers, etc. They are responsible for managing various resources, including content ontology, publisher information, end user information, etc., and are the realization of the entire system. The center of control management. The central server group stores all digital media content, and provides relevant resources to end servers according to their actual needs. The end server group consists of one or more content servers scattered in different regions, which store the digital media resources required locally and the necessary information of local end users. The terminal server group provides digital media content requested by end users, and dynamically synchronizes information and data with the central server group according to the situation.

Those of ordinary skill in the art should understand that the above-mentioned digital media content distribution network adopts a distributed architecture, has good scalability, and can adapt to application needs of different scales. When the digital media content is small and the number of end users is small, the functions of the end server and the central server can be combined, that is, the end users directly communicate with the resource server to reduce the number of servers and reduce system operating costs.

The publisher organizes the digital media content to be published into a resource package, and the system administrator provides a list of end servers for deployment. The publisher communicates with the authentication server, submits a content release request, and after the identity and authority authentication of the authentication server, the authentication server dynamically accesses the database server to obtain the status of each resource server, and then calculates the service of each resource server according to the network location and load status. Quality, from which the most suitable resource server is selected. The authentication server communicates with the selected resource server, and submits a resource package transfer request. After receiving the request, the resource server determines whether the resource package transfer can be carried out according to its own situation, and if so, generates a temporary connection license and returns it to the authentication server. The authentication server returns available resource server information and connection licenses to the publisher. After the publisher uses the connection license to successfully connect to the corresponding resource server, it transfers the resource package to the resource server. The resource server that has obtained the digital media content will distribute the resource package to the designated terminal server according to the configuration requirements of the terminal server of the resource package.

In order to efficiently realize the content distribution process of the end server, based on the system load dynamic balance mechanism, according to a preferred embodiment of the present invention, a layered parallel distribution method of the end server is also provided. The system organizes the end servers into a logical hierarchical tree according to the processing performance and network bandwidth conditions of the servers in advance, and each node in the tree represents an end server. Whenever the content distribution of the end server is performed, according to the resource configuration requirements, the hierarchical tree is trimmed to generate a resource package forwarding tree, which is added to the attribute of the resource package. After receiving the resource packet, the resource server or end server queries the forwarding tree to obtain its own child nodes, and then establishes TCP connections and sends data respectively. After the child node receives the data, it continues to search the forwarding tree, and then forwards the data to the subordinate node. This process is repeated until all end servers have received resource bundles. In order to realize the above-mentioned technology, it is necessary to generate a logical hierarchical tree of the end server of the digital media content distribution network. The process is described below taking a three-layer logical hierarchical tree of the end server including the virtual root as an example, wherein the virtual root is generated during the generation process It is not an actual physical device. When content is distributed, the virtual root is replaced by the resource server, so as to realize the distribution of the content package from the resource server to the end server. The generation process is shown in Figure 2, and the following steps S2.1 to S2.7 are performed:

S2.1: Whenever an end server is added or deleted in the system, all end server information in the system constitutes an end server node set S.

S2.2: The system sorts the nodes in the set S according to the distance from the central server group and the bandwidth, forming an increasing sequence.

S2.3: According to the order of the sequence, find a pair of end servers suitable for direct delivery of resource packages from the set S to form a superior-subordinate relationship y→x. Among them, x is a lower-level node, and its access to the central server group needs to pass through y or the network cost of directly accessing the central server group is greater than the cost of x's access to y.

S2.4: If there is such a pair of end server-subordinate relationship, execute step S2.5, otherwise execute step S2.6.

S2.5: Remove the lower-level server node x from the set S, and add it to the lower-level node set U. At the same time, add the upper-lower relationship y→x to the partial order relationship set W. Execute step S2.3.

S2.6: Build a logical tree with a virtual root. The remaining nodes in the end server node set S are added to the logical tree as child nodes of the virtual root.

S2.7: According to the upper-lower relationship information in the partial order relationship set W, use the nodes in the set U as the child nodes of the above child nodes, and add them to the logic tree in turn.

It should be noted that the logical hierarchy tree is not limited to three layers, and a logical hierarchy tree of any layer can be generated according to a process similar to the above. Based on the above-mentioned logical hierarchy tree, the operation steps of each component are described in detail below in conjunction with the flow shown in Figure 2 to Figure 6:

As shown in FIG. 3 , the flow chart of content publishing by a publisher according to an embodiment of the present invention, content publishing by a publisher includes the following steps S3.1 to S3.8:

S3.1: Before publishing content, the publisher organizes local digital media content resources into a content resource package, where the content resource package includes content ontology, description information and control information including a list of servers to be deployed.

S3.2: Construct a content release request message and send it to the authentication server. The content release request message includes the following content:

Publisher identity information, consisting of a publisher ID and a password encrypted with a pre-assigned certificate;

Publish request information, including resource bundle ID, name, storage capacity requirements, and a list of end servers to be deployed.

S3.3: The issuer enters the waiting state, waiting to receive the response message returned by the authentication server. If the issuer has not received the response message within the set time, otherwise enter step S3.6.

S3.4: After receiving the message replied by the authentication server, the issuer decrypts it.

S3.5: According to the content of the decrypted message, determine whether to allow content release. If not allowed, go to step S3.6; otherwise go to step S3.7.

S3.6: The publisher has not obtained the authorization license from the authentication server, cannot publish the content, and the content publishing operation fails.

S3.7: The issuer obtains the resource server information and the corresponding connection license from the authentication server's reply. The publisher uses this license to establish a connection to this resource server.

S3.8: Using the established connection, the publisher transmits the content resource package to the resource server.

As shown in Figure 4, the execution flow chart of the authentication server according to the embodiment of the present invention, the execution process of the authentication server includes the following steps S4.1-S4.12:

S4.1: The authentication server receives the publisher's content publishing request message.

S4.2: The authentication server decrypts the publisher's request message, accesses the database server according to the publisher's request message, obtains the publisher's certificate, and extracts the publisher's identity information.

S4.3: Check the publisher's permission according to the publisher's identity information, if the publisher has the content publishing permission, go to step S4.4, otherwise go to step S4.12.

S4.4: The authentication server accesses the database server to obtain the status information of each resource server of the system, including remaining storage capacity, processing capacity, load status, network bandwidth, etc.

S4.5: Determine whether there is an available resource server in the system according to the publisher's content release request message, and if so, execute step S4.6; otherwise, execute step S4.12.

S4.6: Select the most suitable resource server for this release from the available resource servers according to processing capacity, load conditions and network bandwidth.

S4.7: The authentication server constructs a request message according to the publisher's request message information and the resource package description information, and submits a content resource package transfer request to the selected resource server. Before delivering the request, the message is encrypted with the public key of the resource server and signed with the certificate of the authentication server.

S4.8: The authentication server waits to receive the response message from the resource server. If no response message is received within the specified time, go to step S4.5, otherwise go to step S4.9.

S4.9: The authentication server receives the response message from the resource server to the resource package transfer request, and decrypts the message.

S4.10: The authentication server judges whether the resource server allows the transfer of the resource package according to the response message information. If allowed, go to step S4.11, otherwise go to step S4.5.

S4.11: The authentication server constructs and sends a response message to the publisher, and the response message includes authorization information, including the resource server information to be connected and the dynamic license to connect to the server.

S4.12: The authentication server constructs and sends a response message to the publisher, the response message rejects the content release request, and adds a reason for the rejection.

As shown in Figure 5, the execution flow chart of the resource server according to the preferred embodiment of the present invention, the execution process of the resource server includes the following steps S5.1 to S5.10:

S5.1: The resource server receives the digital media content resource package delivery request message from the authentication server.

S5.2: The resource server verifies the signature of the authentication server, and decrypts the message with its own private key.

S5.3: Determine whether the identity verification is valid, if the identity verification is valid, execute step S5.4, otherwise execute step S5.5.

S5.4: The resource server decides whether to allow the transmission according to the attributes of the digital media content resource package to be transmitted and the current system storage capacity, processing capacity, system load, and network bandwidth. If allowed, execute S5.6; otherwise, execute step S5.5 .

S5.5: The resource server constructs and returns a resource packet to the authentication server to deliver a rejection message, and gives the reason for the rejection.

S5.6: The resource server generates a temporary connection license for the publisher, includes it in the response message, and sends it to the authentication server. Wherein the connection license may be dynamic.

S5.7: The resource server waits for the publisher's connection request.

S5.8: After receiving the connection request from the publisher, the resource server establishes a connection after performing identity authentication according to the temporary connection license, and transmits the resource package.

S5.9: The resource server analyzes the received resource package, and according to its end server deployment list, reserves the corresponding nodes in the system end server logic hierarchy tree, deletes irrelevant end servers, and replaces the end server in the hierarchy logic tree with itself The virtual root establishes the forwarding tree of the resource package.

S5.10: The resource server takes out its own child nodes from the forwarding tree, establishes connections with the end servers of these child nodes in turn, and transmits resource packets and forwarding tree information.

As shown in Fig. 6 according to the execution flowchart of the end server according to the preferred embodiment of the present invention, the execution steps of the end server include S6.1～S6.5:

S6.1: The end server receives a digital media content resource package delivery request from the resource server of its parent node or the end server.

S6.2: The end server establishes a connection with the server, and receives resource packets and corresponding forwarding tree information.

S6.3: The end server judges whether it is a leaf node of the forwarding tree, if yes, it does not need to continue forwarding, and executes step S6.5, otherwise executes step S6.4.

S6.4: The end server takes out its own child nodes from the forwarding tree, establishes connections with these end servers in turn, and transmits resource packets and forwarding tree information.

S6.5: End.

For those of ordinary skill in the art, it can be understood that the resource server that has obtained the digital media content can distribute the resource package to the corresponding terminal server according to the terminal server configuration requirements of the resource package. technology, but to establish connections with the servers at each end one by one, and transfer resource packages.

It should be noted and understood that various modifications and improvements can be made to the invention described in detail above without departing from the spirit and scope of the invention as claimed in the appended claims. Accordingly, the scope of the claimed technical solution is not limited by any particular exemplary teaching given.

Claims (11)

1. A method for publishing network digital media content, comprising the steps of: 1) Organize the content to be released into a content resource package, and submit a content release request message to the authentication server; 2) The authentication server selects a resource server according to the content release request message; 3) The authentication server returns the selected resource server information and connection license to the publisher; 4) The publisher uses the connection license to deliver the content resource package to the selected resource server. 2. The method according to claim 1, characterized in that, after the step 4), the step 5) the selected resource server distributes the content resource package to the designated server. 3. The method according to claim 2, characterized in that, said step 5) adopts an end-server layered parallel distribution method, comprising the steps of: 51) arrange the end server node sequence; 52) According to the node sequence, determine the superior-subordinate relationship between the nodes; 53) Establishing a logical hierarchical tree of end servers according to the upper-lower relationship between the nodes; 54) Executing the selected resource server to distribute the content resource package to the specified end server according to the end server logical hierarchy tree. 4. method according to claim 3, is characterized in that, described step 54) comprises the steps: 541) Executing the selected resource server to establish a forwarding tree of the content resource package according to the content resource package and the logical hierarchical tree of the end server; 542) Execute delivering the resource package and the forwarding tree information to the child node of the selected resource server; 543) Execute the child node of the selected resource server to judge whether it is a leaf node of the forwarding tree, if yes, then end, otherwise, execute step 544); 544) Transfer the resource package and the forwarding tree information to the designated end server according to the forwarding tree information. 5. The method according to any one of claims 1 to 4, characterized in that the content release request message in the step 1) includes publisher identity information and release request information. 6 . The method according to claim 5 , wherein the step 2) includes accessing a database server according to the publisher's request message to obtain a publisher's certificate, thereby checking the publisher's authority. 7. The method according to any one of claims 1 to 4, wherein said step 2) comprises: judging whether the resource server is available according to the content release request message; Select the optimal resource server from the available resource servers according to the processing capacity, load conditions and network bandwidth. 8. The method according to any one of claims 1 to 4, characterized in that the connection license in the step 3) is dynamic. 9. A network digital media content publishing system, said publishing system comprising a publisher, an authentication server, a resource server and a database server, characterized in that: The publisher is used to organize the content to be published into a content resource package, submit a content release request message to the authentication server, and use the connection license to transfer the content resource package to the selected resource server; The authentication server is used to select a resource server according to the content publishing request message, and return the information of the selected resource server and the connection license to the publisher. 10. The system according to claim 9, further comprising an end server group, configured to receive the content resource package from the selected resource server. 11. The system according to claim 10, wherein the end server group is a logical hierarchical tree structure, wherein the upper and lower nodes y→x in the logical hierarchical tree have at least one of the following characteristics: 1) Node x needs to pass through node y to access the selected resource server; 2) The network overhead for the node x to directly access the selected resource server is greater than the overhead for the node x to access the node y.

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