KR20060108605A - Application service methods and systems that are remotely loaded over a network - Google Patents

Abstract

The present invention relates to a method and a system for remotely loading an application provided by an ASP into a memory of a client through an application service server mounted in an application service provider (ASP). Determining a system operating system, free memory, and network operation from the server; accessing the application providing server by referring to the client registry; and determining a streaming protocol between the application providing server and the client. Relying on the client to request the required application transmission from the client to the application providing server; streaming an application from the application providing server to the client according to the application request. Providing and loading the application into the client memory.

The present invention also relates to a method and system for remotely loading the latest vaccine into the virtual memory of a client through a vaccine providing server (Application Service Server) mounted on the vaccine provider by applying the application streaming.

 Network, application service provider (ASP), application

Description

System and method for doing the remote-load with the application service via networks}

1 is a simple block diagram of an application serving server and an application container of an ASP.

2 is a simple flow diagram of the basic process that must go through the execution of the application container mounted on the client.

3 is a simple flow diagram of a process by which an application container finds an application providing server on the Internet.

4 is a simple flowchart of a process of streaming and buffering an application data block from an application providing server to an application container of a client and then loading the buffer into an application memory.

5 is a simple block diagram connecting a vaccine provider's vaccine providing server and a client's vaccine container via a CDN.

FIG. 6 is a simple flowchart of a process in which a vaccine container searches for and treats a virus infected by a client by buffering a vaccine streamed from a vaccine providing server.

<Description of main parts of drawing>

100: application service provider 105: application providing server

110: application database 115: transmitter

120: application billing 125: client

130: application container 135: buffer

140: loading unit 145: main memory device

150: registry

The present invention relates to a method and a system for remotely loading an application provided by an ASP into a memory of a client through an application service server mounted in an application service provider (ASP). Determining a system operating system, free memory, and network operation from the server; accessing the application providing server by referring to the client registry; and determining a streaming protocol between the application providing server and the client. Relying on the client to request the required application transmission from the client to the application providing server, and streaming the application from the application providing server to the client according to the application request. To provide and is characterized in that comprises the step of loading the application on the client memory.

The present invention also relates to a method and system for remotely loading the latest vaccine into the virtual memory of a client through a vaccine providing server (Application Service Server) mounted on the vaccine provider by applying the application streaming.

As information and communications infrastructure and desktop computer technology evolve, the software used by individuals and businesses has been packaged and bulked, and the total cost of ownership required to use the software is increasing rapidly.

In particular, as all businesses are computerized based on information and communication technology, the TCO of application software necessary to support a company's work has increased to the extent that small and medium-sized enterprises can afford it. As a result, ASP, which provides access to application services over the network without purchasing additional software, is the only alternative that can be used at no cost to small and medium-sized businesses or individuals who are burdened by TCO for expensive software. have.

ASPs include enterprise ASPs that support corporate business and ASPs for PCs that provide applications installed on desktop computers.

Enterprise ASP provides enterprise business application software for enterprise activities such as enterprise resource planning (ERP), groupware (G / W), knowledge management system (KMS), customer relationship management (CRM), and supply chain management (SCM). It is a service that provides various ways of accumulating and applying various kinds of information such as customer's purchasing trend, responsiveness to new products, profit rate of each product, etc. at low cost through D / W (Data Warehouse) with various information accumulated. to provide.

The above-mentioned ASP for enterprise can reduce the manpower and cost of the enterprise for small and medium sized enterprises, can use expensive high quality service at low cost, solve the limitation of the place for application use, and computerize the enterprise business. This has the advantage of enabling fast business deployment.

On the other hand, the security problem caused by various information stored in the outside of the enterprise and the limitation of the information application power generated because each ASP is incompatible with each other is the biggest disadvantage of the enterprise ASP.

On the other hand, ASP for PC is an application service method in which a billing system is mounted on a server side for a thin client, which is a client hardware initiative aiming to reduce TCO in a client server system.

Unlike conventional Fat Clients, in which all applications are loaded on the user's computer, the thin client has almost all the functions necessary for the client on the server side, and the client's functions are managed by the MMI (Man-Machine Interface). It is a hardware concept of the form which considerably reduces TCO by limiting to. Typical methods of thin clients include network computers (NC) developed by Oracle and Sun Microsystems, Net PCs developed by Intel and Microsoft, and Windows terminals developed by Microsoft. Etc.

The ASP for PC extends the above-mentioned thin client to the Internet, which is a wide area network, and has a billing system for application services on the server side. The client uses an application installed in the ASP as if it is mounted on its own computer. To do that.

The ASP for PC as described above has the advantage of greatly reducing the TCO for the application from the client's point of view. However, the waste of network resources between client server systems due to the fact that the data generated by the client is stored externally and the frequent data communication between the client and the server in the process of limiting the client to MMI is the biggest problem of ASP for PC. It is a disadvantage.

As a result, all forms of ASP commercially available up to now have the advantage of greatly reducing TCO from the client's point of view, as well as disadvantages of security problems and network resources.

Of course, security problems can be solved to some extent by backing up client data stored in the ASP and installing a firewall or the like. However, the inconvenience of network resources caused by traffic generated during the frequent data communication process between the client and the ASP, and the inconvenience caused by the wasted network resources, is recognized as one of the reasons why ASP users are reluctant to use ASP services themselves. In particular, in the case of an ASP for a PC that restricts a client to MMI, such a waste of network resources is more serious.

Recently, with the development of the network, the presence of viruses is also rapidly growing, and the damage caused by this is one after another.

Generally, files targeted by viruses can infect system files, such as wsock32.dll, used in all Windows-based operating systems, as well as program files installed in existing clients, causing errors in operation. That is, a vaccine released a month ago cannot cure a virus that appeared a week ago. As a result, infection with new viruses is likely to cause errors in antivirus programs installed on existing hard disks.

As mentioned above, the vaccine upgrade cycle is frequent from several hours to several weeks, and the vaccine is inconvenient to use without the immediate upgrade of the vaccine, and the user has to download and install a new vaccine. You must download and reinstall.

An object of the present invention to solve the above problems is to execute the application container in the client, the application container to find the application providing server, after streaming and buffering the application data block from the application providing server to the application container of the client It provides a method to remotely load an application from the ASP on the Internet to the client's memory, such as directly executing a program installed on the client, through the step of loading it into memory. It is more effective in combating viruses more effectively than existing vaccines (which can damage programs due to new virus infiltration), and at the same time, saving the vaccine to a hard disk or downloading the latest vaccine again. The present invention provides a method and system for providing a vaccine using streaming.

The present invention relates to a method and a system for remotely loading an application provided by an ASP into a memory of a client through an application service server mounted in an application service provider (ASP). Determining a system operating system, free memory, and network operation from the server; accessing the application providing server by referring to the client registry; and determining a streaming protocol between the application providing server and the client. Relying on the client to request the required application transmission from the client to the application providing server; streaming an application from the application providing server to the client according to the application request. Providing and loading the application into the client memory.

The present invention also relates to a method and system for remotely loading the latest vaccine into the virtual memory of a client through a vaccine providing server (Application Service Server) mounted on the vaccine provider by applying the application streaming.

According to the present invention, application data blocks that are streamed from the ASP's application provisioning server and buffered into the client's application container are not stored as files. However, the data transmission technique used in the present invention is not limited to the application of the classical streaming technology for multimedia real-time playback on the Internet, and all kinds of real-time transmission techniques over the Internet are applied to the data transmission technique of the present invention. Included.

1 is a simple block diagram of an application providing server 105 of an ASP 100 and an application container 130 of a client 125.

The ASP 100 is configured as a server system called an application providing server 105, and the application providing server 105 basically transmits an application to the D / B 110 storing an application transmitted to the client 125. And a transmitter 115 and an application billing unit 120.

The application D / B 110 stores application data to be transmitted to the client 125, and the application data is streamed to the application container 130 of the client 125 through the transmitter 115. At this time, the stream data streamed from the transmitting unit 115 of the application providing server 105 to the application container 130 of the client 125 is called an application data block.

The application data block takes the form of a main memory 145 of the client 125, i.e., a process that can be immediately loaded into memory, and has the same structure as a file stored in the client 125 hard disk is loaded into the memory. have.

In general, the process of loading a file into memory by the operating system is as follows.

The file on the hard disk to be loaded into the memory is allocated to the virtual memory address through the link editor and the loader of the operating system, and then loaded into the memory in combination with the segment mapping table. At this time, the files loaded into the memory are not loaded at once, but are loaded sequentially from the portion to be executed immediately, so that a file having a larger capacity than the physical memory can be executed.

The application data block is a structure in which a file on the hard disk is loaded into the memory as described above, and is sequentially streamed from the transmitting unit 115 of the application providing server 105 and buffered in the application container 130 of the client 125. do.

The application billing unit 120 calculates a fee for the application service of the ASP 100 and charges a fee. The charging method is dependent on the type of the serviced application and the ASP 100 charging criteria.

The client 125 is loaded with a program called the application container 130, the application container 130 is basically a buffer 135 and the buffered application data buffering the application data block streamed from the application providing server 105 It is composed of a stacking unit 140 for loading the block into the client 125 memory.

The buffer 135 is a memory block having a first in first out (FIFO) structure, and sequentially buffers an application data block streamed from the transmitter 115 of the application providing server 105. The buffered application data block is loaded into the memory of the client 125 by the loading unit 140.

The loading unit 140 allocates a virtual memory address to the application providing server 105 buffered in the buffer 135 and then streams the file on the hard disk as if the file on the hard disk is loaded into the memory through the operating system as described above. Load application data blocks into memory with reference to the operating system. Accordingly, the application data block loaded in the memory through the loading unit 140 of the application container 130 plays the same role as the file on the client 125 hard disk loaded on the memory. 130 generates the same result as executing the application in the application providing server 105 on the Internet directly on the client 125.

The application container 130 refers to the registry 150 of the client 125, which contains the necessary application for the application container 130 to load blocks of application data from the application providing server 105 into the client 125 memory. All information is stored. However, the client registry 150 addressed in the present invention does not refer only to the registry of the Microsoft Windows system. The client registry 150 is a D / B in which the application container 130 stores information for streaming an application data block from the application providing server 105 and loading it into a memory. The structure includes a registry of a window system. , INI files, as well as all kinds of D / B.

The application container 130 includes all programs created and distributed by the ASP 100, a web browser including Internet Explorer or Netscape, and system utilities included in the operating system. It serves to run a kind of application on the client (125). Accordingly, each application container 130 may perform slightly different tasks according to its structure and purpose.

Hereinafter, a process in which the application container 130 should basically go through the process of loading the application data in the application providing server 105 to the client 125 memory through a simple flow chart. However, the following flowchart is for the content that should be basically performed in each step, and the workflow of the present invention is not limited to the following flowchart only.

2 is a simple flowchart of the basic process that must be performed in the step of executing the application container 130 mounted on the client 125.

When the application container 130 is executed in the client 125 (200), the application container 130 refers to a dynamic linking library (DLL) file and library information necessary for driving the application, and has finished preparation for application service. If the application provided by the application providing server 105 is optional for the operating system, the operating system type and version of the client 125 are checked for optimal application service (205).

After checking the operating system type and version of the client 125, the application container 130 checks whether there is sufficient physical memory space for the application service in the client 125 (210). However, it is not necessary to check the free space of the client 125 hard disk in this process. According to the present invention, the application data block streamed from the application providing server 105 to the client 125 is not stored in the hard disk. If there is not enough free space in the physical memory in the client 125 (215), the application container 130 outputs a message to secure the memory space (220), and automatically terminates (225). However, if there is sufficient memory for the application service on the client 125, the application container 130 allocates 230 a buffer 135 for its use.

When the buffer 135 to be used by the application container 130 is allocated, the application container 130 checks whether the client 125 network is operating normally (235). The present invention uses the network resources more than once in the step of streaming the application data block from the application providing server 105 to the client 125 for the application service, so that if the client 125 network is not operating normally ( 240, after outputting a user message (220), the application container 130 is automatically terminated (225).

If the client 125 network is operating normally, the application container 130 selects an application to be run (245). This is used when driving a plurality of applications with one application container 130. If the application container 130 can drive only a single application, the application to be driven is automatically set.

3 is a simple flowchart of the process by which the application container 130 finds the application providing server 105 on the Internet.

In general, a streaming service for real-time playback of a large amount of multimedia content uses a CDN (Content Delivery Network) for speed improvement. Of course, the present invention can also use the CDN to improve the streaming speed of the application data block. However, in the case of providing a streaming service through the CDN, since the process of finding the application providing server 105 by the application container 130 depends on the structure of the CDN, in this flowchart, the application providing server 105 does not use the CDN. This section covers the process of finding.

As shown in FIG. 2, when the application container 130 is executed in the client 125 (300), the application container 130 checks the address of the application providing server 105 on the Internet with reference to the registry 150 (305). In step 310, the server 105 accesses and logs in. The reason for logging in to the application providing server 105 is to charge a usage fee for an application service, and the charging method depends on the charging criteria of the ASP 100.

When the application container 130 is successfully connected to the application providing server 105 as described above, the application container 130 is provided with the application data of the application providing server 105 of the application data suitable for the type and version of the client 125 operating system. Check if it exists in / B (110) (315).

If application data suitable for the client 125 operating system does not exist in the application providing server 105 (320), the application container 130 is automatically terminated (325) after logging out (325). However, if application data suitable for the client 125 operating system exists in the application providing server 105, the application container 130 may store information about the application data streamed from the application providing server 105 to the client 125. 150) (335).

The information about the application data extracted from the client registry 150 includes not only location information of the corresponding application data but also all information necessary for the streaming service of the application data.

When the information about the application data is extracted from the client registry 150 as described above, the application container 130 determines a streaming protocol to be used by the application data block streamed from the application providing server 105 to the client 125 (340). ).

Currently, commonly used streaming protocols include HyperText Transfer Protocol (HTTP), User Datagram Protocol (UDP), and Transmission Control Protocol (TCP), and the recent Microsoft-produced Microsoft Media Server (MMS) protocol When there is a demand for transmission, the most suitable protocol is selected from among three protocols such as HTTP, UDP, and TCP to implement optimal streaming.

In particular, UDP and TCP are protocols selected from the fourth layer of OSI, which is a transport layer, in the TCP / IP protocol, which is the Internet basic protocol, and the reliability of the streaming service is slightly different depending on which protocol is selected from UDP and TCP. There is a difference.

In other words, TCP is a protocol for initiating communication after establishing a session. While TCP defines rules and procedures of transmission control for orderly and accurate data transmission in data communication, UDP provides high-speed communication rather than reliability of data communication. Protocol. Therefore, UDP is mainly used in TCP for multimedia streaming, which is not a problem even if a part of a frame of media is lost during streaming.

However, in the present invention where the reliability of communication is emphasized rather than the speed of the streaming service, in the streaming service rather than UDP which does not guarantee the reliability of data communication, the concept of securing the reliability of streaming such as error correction or retransmission request is used in the streaming service. do.

In the present invention, the streaming protocol is determined according to the structure, function, and purpose of the provided application, and the type of the application container 130. For example, if the application container 130 is a web browser, it is appropriate that HTTP is selected as the streaming protocol, and if TCP is in the form of a program distributed by the ASP 100 or a system utility provided by the operating system, then TCP is the streaming protocol. It is suitable to be selected as.

However, the streaming protocol is not always determined according to the type of the application container 130, what application data is streamed to the client 125, what structure, and what tasks are performed by the client 125? It may be decided accordingly.

In addition, a push technology that is not stored as a file may be applied and streamed, and in this case, a pointcast push technology or a castnet push technology may be applied according to the structure, function, and purpose of the transmitted application data. have.

4 is a simple flowchart of a process of streaming and buffering an application data block from an application providing server 105 to an application container 130 of a client 125 and then loading it into memory of the client 125.

After the application container 130 is executed in the client 125, if the streaming protocol of the application data block streamed from the application providing server 105 is determined (400), the loading unit 140 of the application container 130 may be configured as a client. The virtual address for the application data is allocated with reference to the operating system (405). This process is the same as the process of assigning a virtual address for the file by the Link Editor and the Loader of the operating system in order to load the file stored in the client 125 hard disk into the memory.

When the virtual address allocation of the application data streamed through the loading unit 140 of the application container 130 is completed, the transmitting unit 115 of the application providing server 105 starts streaming the application data block to the client 125. 410. Of course, the application data block that begins to stream from the application providing server 105 to the client 125 is continuously streamed until all application data blocks to be streamed are buffered in the application container 130 of the client 125.

When the application data block starts to be streamed from the transmitter 115 of the application providing server 105, the application container 130 of the client 125 buffers the application data block (415), and then into the client 125 memory. In operation 420, it is checked whether as many loadable application data blocks are buffered as possible. If the data buffered in the buffer 135 is not buffered as much as possible in the memory (425), the application container 130 continues to buffer until the application data block is sufficiently streamed. However, if enough buffering is possible in the application data block memory stacked in the buffer, the loading unit 140 of the application container 130 sequentially combines the buffered application data with the segment mapping table in reference to the operating system (430). ) Into the physical memory of the client 125.

When application data buffered from the application providing server 105 to the client 125 application container 130 is loaded into the client 125 memory (435), the application container 130 deletes the data from the buffer 135 by 440, the next application data streamed from the application providing server 105 to be used.

As described above, when the application container 130 deletes the application data temporarily stored in the buffer 135, the loading unit 140 checks whether the application data is loaded in the client 125 memory for loading (445). . If all of the application data streamed from the application providing server 105 has not been loaded into the client 125 memory (450), the application container 130 may proceed until the application container 130 loads all the application data into the client 125 memory. Repeat. However, if all application data streamed from the application providing server 105 to the client 125 application container 130 has been loaded into the client 125 memory, the application container 130 is stored in the memory via the client 125 operating system. By requesting the loaded application data to be computed via the CPU (455), the application in the application providing server 105 on the Internet is executed on the client 125.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following examples are representative of the various methods for explaining the present invention most appropriately, and the present invention is not limited to the following examples.

The present embodiment relates to an antivirus, and in view of the above-described terms, the ASP 100 includes the vaccine provider 500, the application providing server 105, the vaccine providing server 505, and the application data. Alternatively, the vaccine pattern and the application container 130 may be renamed and used as the vaccine container 540. In particular, the present embodiment also describes a method for improving the streaming speed using the CDN, and the vaccine container 540 is equipped with a virus treatment unit for virus detection and treatment. Therefore, as the vaccine providing server 505 provides the vaccine used for virus treatment to the vaccine container 540 of the client 125, the virus infected with the client 125 may be searched for and treated.

5 is a simple block diagram connecting the vaccine delivery server 505 of the vaccine provider 500 and the vaccine container 540 of the client 125 via the CDN 525.

The vaccine provider 500 includes a vaccine providing server 505, and the vaccine providing server 505 includes a vaccine D / B 510, a vaccine transmitting unit 515, and a vaccine service charging unit 520. .

The vaccine D / B 510 stores a vaccine for servicing the client 125, and the vaccine D / B 510 is always automatically updated with vaccine data capable of treating a recently appeared virus. Accordingly, the client 125 is provided with a method of searching for and treating all viruses by simply streaming new vaccine data from the vaccine providing server 505.

The vaccine transmitter 515 serves to stream vaccine data of the vaccine D / B 510 to the vaccine container 540 of the client 125, and the vaccine service charging unit 520 provides a vaccine provided to the client 125. Calculate the royalties for the service. In general, virus scanning is performed free of charge, using a method of receiving a fee per treatment, and all the information necessary for charging is provided by the vaccine providing server 505 from the vaccine container 540 installed on the client 125. The vaccine service billing unit 520 is transmitted.

The client 125 is equipped with a vaccine container 540, the vaccine container 540 is composed of a buffer 135, vaccine loading unit 545, vaccine engine 550 and the like.

The buffer 135 of the vaccine container 540 serves to buffer the vaccine streamed from the vaccine providing server 505, and the buffered vaccine is not stored as a file in the client 125 hard disk, 545 is immediately loaded into the client memory 145.

The vaccine loader 545 serves to load the vaccine buffered in the buffer 135 in the client memory 145 with reference to the operating system, and the vaccine loaded in the memory 145 is distributed in the form of software. It plays the same role as the vaccine used in the vaccine program.

The vaccine container 540 includes a virus scanning program or a web browser distributed by the vaccine provider 500. If the vaccine container 540 is a virus scanning program distributed by the vaccine provider 500, the vaccine container 540 is equipped with a vaccine engine 550 for virus detection and treatment, and the vaccine container 540. ) Is a web browser, the antivirus engine 550 is plugged into the web browser.

The vaccine engine 550 mounted in the vaccine container 540 as described above performs a role of searching for and treating a virus infected by the client 125 by using a vaccine streamed from the vaccine providing server 505. . That is, the vaccine engine 550 is a vaccine driving unit for virus detection and treatment, and the vaccine engine uses the latest vaccine necessary for detecting and treating viruses in real time by streaming from the vaccine providing server 505.

Therefore, the vaccine streamed from the vaccine provider 500 to the client 125 is streamed to the client 125 whenever the vaccine container 540 runs on the client 125 and connects to the vaccine providing server 505. The vaccine will always provide the latest version.

That is, in the process of searching for and treating the virus of the client 125 as described above, it is possible to start streaming the latest vaccine from the vaccine provider 500, so that the virus can be searched and cured immediately before the streaming is completed. It is the biggest feature.

In addition, in the present embodiment, the CDN 525 is used to maximize the effect of the vaccine streaming service.

The CDN 525 minimizes the middle mile between the content provider and the Internet service provider (ISP) 530 through a cache server 535 distributed in a backbone network, thereby providing uninterrupted delivery ( Load Balancing for Non-Stop Delivery, Caching for Speedy Web Response, Distributed and Replicated Content Delivery to Minimize Internet Congestion It is a way.

Accordingly, in order to rapidly deliver the vaccine of the vaccine providing server 505 to the vaccine container 540 of the client 125 through the CDN 525, the vaccine provider 500 may establish a strategic partnership with the CDN service provider 525. The vaccine may be streamed through the cache server 535 of the CDN.

That is, the vaccine provider 500 previously delivers the latest vaccine to the cache server 535 on the CDN before the vaccine container 540 of each client 125 requests the vaccine, or the vaccine container 540 requests the vaccine. By immediately delivering the latest vaccine to the cache server 535, the vaccine container 540 is able to receive the latest vaccine at the same time running on the client 125.

6 is a simple flowchart of a process in which the vaccine container 540 detects and treats a virus that is infected with the client 125 by buffering a vaccine streamed from the vaccine providing server 505, and CDN for improving vaccine delivery performance. Use

When the vaccine container 540 is executed in the client 125 (600), the vaccine container 540 is infected with the client 125 using the vaccine streamed from the vaccine provider 500 through the process as shown in FIG. Check your operating system, free memory, and network activity to see if you can get virus detection and repair services. After accessing the vaccine providing server 505 with reference to the registry as shown in FIG. 3 (605), the streaming protocol between the vaccine providing server 505 and the client 125 is determined. At this time, since the client 125 vaccine container 540 actually streams the vaccine, not the vaccine providing server 505, but the cache server 535 on the CDN, the streaming protocol determined in the above process is used in this embodiment. It should be compatible with the CDN and cache server 535 and the like.

As described above, when the vaccine container 540 accesses the vaccine providing server 505 and the streaming protocol is determined, the vaccine container 540 initializes the system to search for and treat the virus infected by the client 125. Thereafter, the vaccine engine 550 is driven (610). At this time, the vaccine engine 550 does not yet have a vaccine to be used for client 125 virus search and treatment.

Accordingly, the vaccine container 540 requests the vaccine providing server 505 to immediately deliver the latest vaccine necessary for the client 125 virus search and treatment (615). Then, the vaccine providing server 505 redirects the vaccine delivery request of the client 125 to the cache server 535 on the CDN having a minimum mile with the client 125, and then the cache. The vaccine is forwarded to the server 535 (620), and the client 125 vaccine container 540 receives the high speed streaming of the vaccine from the cache server 535 (625).

When the vaccine is delivered from the cache server 535 to the client 125 vaccine container 540, the vaccine container 540 checks whether the vaccine buffered in the buffer 135 is available. If a vaccine buffered in the buffer 135 is available (630), the vaccine container 540 loads the vaccine into the client 125 memory through the vaccine loading unit 545 (635). The engine 550 begins to scan for viruses (640). However, it is important to note that before all vaccine data is completed from the vaccine providing server 505 or the cache server 535 on the CDN, the client 125 virus is scanned through the vaccine engine 550 with a minimum amount of vaccine. Is to start.

When the vaccine engine 550 of the vaccine container 540 detects a virus infected with the client 125 or after the scan is completed (645), the virus is infected with the client 125 (645). 550 treats the virus infected with the client 125 (650), passes the result to the vaccine provider 500 to charge a fee for the vaccine service (655), and then scans the virus for the client 125 And output the treatment result (660). However, if a known virus infection is not detected in the virus detection process for the client 125, the vaccine container 540 outputs the result to the client 125 and then terminates the virus detection and treatment process.

According to the present invention, through the application service server (Application Service Server) mounted on the ASP (100) (Application Service Server), by remote loading the application provided by the ASP to the client's memory (Remote Service), It solves the inconvenience of using the application and brings the economic benefits of the service expansion to various application providers.

In addition, by scanning vaccines in real time by buffering vaccine data streamed by vaccine providers, viruses can be detected and treated more effectively than vaccines stored on regular hard disks (programs can be damaged by new virus infiltration). It is effective, and it can reduce the inconvenience of saving the vaccine as a file on the hard disk or downloading the latest vaccine again.

Claims (1)

 An application D / B (Data Base) for storing an application to be streamed to the client; And And application streaming means for streaming the application stored in the application D / B to an application request client terminal.

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