KR20030042658A - Recording medium storing a browser therein and a data downloading method therewith - Google Patents

Abstract

PURPOSE: A recording medium storing a browser and a method for downloading data using the same are provided to reduce the network traffic by recording a past server and a transmitting speed of a terminal, and adjusting the TCP(Transmission Control Protocol) connection configuration by the recorded information. CONSTITUTION: A data part(115) stores the TCP connection state information for the servers. A main part(111) transmits a download request message by receiving a web document according to an input event from the server and analyzing the receiving web document. A connection management part(112) sets up the TCP connection by searching the connection state information from the data part(115) according to the download request message, and comparing the searched connection information with a preset critical value. A download part(113) downloads the data from the server through the set TCP connection. A rendering part(114) renders the downloaded data and displays it on a screen.

Description

Recording media stored in the browser and data download method using the same {RECORDING MEDIUM STORING A BROWSER THEREIN AND A DATA DOWNLOADING METHOD THEREWITH}

The present invention relates to a recording medium embedded in a terminal, and more particularly, to a recording medium provided in a client terminal in a client / server system and storing a browser for reducing a response time of a server and a data download method using the same.

With the development of communication and network technology, services that provide various data using the Internet to a large number of clients are actively progressing. In order to receive such Internet services, a client needs a terminal equipped with a web browser. By using a web browser, a client requests data from a web server and receives the data from the web server through the Internet.

When a client connects to and receives data from a web server, the response time of the web server is important. The factors affecting the response time of the web server include IP conversion time of Domain Name Server (IP), TCP connection time, hypertext transfer protocol (HTTP) request and response time, and data transfer time.

Among many studies to reduce the response time from the web server, efforts are being made to solve the problem by using a cache and proxy system or preprocessing of obstacles.

In particular, the web cache system installs frequently used documents on the client or a system close to the client, which reduces service congestion between the client and the web server and reduces traffic on the Internet, as well as the World Wide Web (WWW). Web) It is an effective system that can improve the performance of the system.

Advantages of such a web cache system include reduced network traffic and congestion, reduced client response time, reduced web server load, increased web service stability, and analysis of client preferences in organizations and organizations.

However, while having the above advantages, if the proxy of the web cache system is not updated in a timely manner, the data stored in the proxy may not be up-to-date and may cause bottlenecks in the cache server. However, the error occurrence in this cache system is fatal to the web server serving the web service. Also, providers who provide Web services may not want to store data in the cache system without increasing the website's access count.

As a structure of such a cache system, researches on vertical, distributed, and mixed methods according to the relationships among servers providing caches have been conducted. Thus, the design of an efficient structure among multiple cache systems reduces the client response waiting time. Efforts are also underway.

Another approach is to reduce client response latency by preprocessing client patterns through analysis and prediction. There are three main preprocessing methods: between web browsers and web servers, between proxy servers and web servers, and the web. It takes place between the browser and the proxy server.

Recently, the popularity of embedded terminals such as web browsers, mobile communication terminals with built-in operating systems, PDAs, small appliances, and the like is increasing, and in order to meet these trends, clients connecting to the Internet using embedded terminals are increasing. As mentioned above, the response latency between the client and the web server also greatly affects the performance of the embedded terminal.

Unlike a terminal of a client that supports a large hard disk, such as a general home computer, the embedded terminal should be able to support access to the Internet by using a small capacity of hard disk and cache memory. There is a problem that can not be used in the embedded terminal.

An object of the present invention is to provide a recording medium stored in the browser that reduces the network traffic by recording the transmission speed of the terminal and the transmission speed of the terminal by using a TCP (Transmission Control Protocol) connection settings do.

Another object of the present invention is to manage TCP connection state information of a server, and determine whether to create a new TCP connection setting between the client system and the server by using the average transmission rate value of the server in the connection state information. To provide a data download method using a recording medium stored in the browser to adjust the control.

In order to achieve the above object, the present invention is provided in the client side of the client / server system established through a communication network in a recording medium storing a browser requesting data (TCP: TransmissionControl Protocol) connection and the data, the And a browser for storing the state of the recipe connection with the server and downloading the data through the established recipe connection between the server and the client terminal based on the stored recipe connection information according to an event occurrence.

In order to achieve the other object as described above, the present invention is provided in the client side of the client / server system established through a communication network to download the data using a browser having a recipe connection state information, the input of the client A first step of downloading a web document from the server through a recipe connection with the server according to an event, analyzing the downloaded web document, and transmitting a data download message based on an analysis result of the web document; A second step of extracting the recipe connection status information of the server in response to the message, comparing the connection status information with a preset threshold value, and determining the connection status information based on the comparison result; When the value is less than the value, it resets the recipe / IP connection information between the server and the terminal. And a fourth step of downloading and displaying data on the screen by using the recipe connection when the connection state information exceeds a threshold value.

1 is a block diagram illustrating a client / server system established through a communication network according to an embodiment of the present invention.

2 is a block diagram illustrating in detail a recording medium in which a browser is stored according to an embodiment of the present invention;

3 is a flowchart illustrating a data download process using a recording medium in which a browser according to the present invention is stored.

<Description of the code | symbol about the principal part of drawing>

100: terminal 110: recording medium

111: main unit 112: connection management unit

113: download unit 114: rendering unit

115: data portion 120: display portion

150: communication network 200: server

There may be a plurality of embodiments of the present invention, and a preferred embodiment will be described in detail below with reference to the accompanying drawings. Those skilled in the art through this embodiment will be able to understand the objects, features and advantages of the present invention well.

1 is a block diagram illustrating a server / client system constructed through a communication network according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a recording medium in which a browser is stored according to an embodiment of the present invention.

Referring to FIG. 1, a server / client system includes a terminal 100 including a recording medium 110 and a display unit 120, a communication network 150 such as a wired / wireless internet, and contents according to a content request of a terminal 100. It includes a plurality of servers (200: 200/1 to 200 / n) for providing a service.

The terminal 100 operates and takes charge of the operation of the terminal 100 to manage the operating system (OS: Operating System), which is a basic software or a general control program that provides an environment in which an application program of a client can be executed efficiently. An embedded terminal or a computer of a client having a recording medium 110 provided with a browser supporting various protocols so as to be linked to the Internet. When the terminal 100 is an embedded terminal, a small hard disk (storage space) and It has a cache memory and a large capacity hard disk and cache memory in the case of a client computer.

In addition, the terminal 100 processes an input event of the client, accesses the server 200 corresponding to the input event, downloads the corresponding web document, analyzes it, and displays the web document on the screen based on the analysis result. A browser for determining whether data is required to download and downloading the corresponding data from the server 200 based on the determination result and displaying a web document including the downloaded data on the screen of the terminal 100 through the display unit 120. Is stored in the recording medium 110. Referring to FIG. 2, the recording medium 110 includes a main browser (Web Browser Main Task) 111, a connection management task (112), and a download task (Download Task). 113, a rendering task 114, and a data 115.

The main unit 111 processes an input event input by a client, and establishes a web connection (eg, HTML document, WML document, etc.) corresponding to the input event between the server 200 and the terminal 100. Analyze the details of the web document received from the server 200 through the analysis, and determine whether there is data to be downloaded to display the web document on the screen of the terminal 100 based on the analysis result, and the determination result data If the download is necessary, the connection management unit 112 transmits a message requesting data download.

The data unit 115 stores connection state information between the terminal 100 and the server 200. The connection state information is in a response wait time table format.

The information stored in the response wait time table includes the HTTP (HyperText Transfer Protocol) protocol version provided by each server 200, the latest connection time which is the last time the terminal 100 connected to the server 200, and the latest connection. Transfer speed (TS: transfer speed, unit: bps), which is a data download speed in one server 200, and average transfer speed (MTS: Mean of download speed) when the terminal 100 connects to the server 200 k times. Transfer Speed, unit: bps).

The average transmission rate value among the data stored in the data unit 115 is the average transmission rate ({MTS} _ {n−) calculated by the terminal 100 in consideration of the n−1 th to the latest k th connection to the server 200. 1}) to calculate k accurate average transfer rates {MTS} _ {n} by adding the data transfer rate according to the n th connection, as shown in Equation 1 below.

However, since a calculation method such as Equation 1 can calculate an accurate average speed but has a problem in that all transmission speed data of k data has been recently acquired, Equation 1 is replaced by Equation 2 below.

The data stored in the data unit 115 is used as reference data by the connection manager 112 to establish a TCP connection for efficient network resource use between the server 200 and the terminal 100 and minimizing response waiting time according to data download. The data stored in the data unit 115 will be updated by the transmission speed of the data measured by the download unit 113 after the data download is completed from the corresponding server 200.

The connection manager 112 is a means for establishing a TCP (Transmission Control Protocol) connection in consideration of a response waiting time for the server 200 stored in the data unit 115, and receives a data download request message from the main unit 111. Later, the data unit 115 is searched to determine whether connection setting information for the corresponding server 200 exists, and according to the determination result, the version of the HTTP protocol of the corresponding server 200 is checked to correspond to the corresponding protocol version. Determines whether to use a connection or establish a new TCP connection.

In addition, the connection manager 112 instructs the downloader 113 to download the corresponding data after sending a download request message to the server 200 using the established TCP connection.

The download unit 113 waits for a response message and data transmission from the server 200 according to the TCP connection set by the connection management unit 112, and transmits the data when the terminal 100 requests the data. The rendering unit 114 is required to output the web document including the data to the display unit 120, and the data transmission speed between the server 200 and the terminal 100 is reflected in the data unit 115.

The rendering unit 114 that receives the output request from the download unit 113 renders the data and displays the data on the screen through the display unit 120 of the terminal 100.

3 is a flowchart illustrating a data download process using a recording medium in which a browser is stored according to an exemplary embodiment of the present invention.

First, the client inputs a URL (Uniform Resource Locator) to which the client wants to connect by using an input window displayed on the screen of the terminal 100 or inputs a command desired by the client in a web document displayed on the screen of the terminal 100. The browser stored in the recording medium 110 selects a web document from the server 200 by using a TCP connection established between the server 200 and the terminal 100 to process an input event according to the input of the UAL or the client. Download it (S301).

The main unit 111 of the recording medium 110 analyzes the web document downloaded through the transmission path formed between the server 200 and the terminal 100 and determines whether there is data to be downloaded in the web document (S302, S303).

As a result of the determination in step 303, when there is no data to be downloaded as a result of the analysis of the web document, the main unit 111 displays the web document received from the server 200 on the screen through the display unit 120 of the terminal 100. (S310).

As a result of the determination in step 303, the main unit 111 transmits a data download request message to the connection manager 112 when there is data to be downloaded as a result of the analysis of the web document (S304).

The connection manager 112 receiving the data download request message establishes a TCP connection between the server 200 providing the data and the terminal 100. First, connection state information of the server 200 providing the data is stored in the data unit ( It is determined whether or not it is stored in step 115 (S305).

As a result of the determination of step 305, when the connection state information of the server 200 does not exist in the data unit 115, the connection manager 112 establishes a new TCP connection for data transmission between the server 200 and the terminal 100. After setting (S306), a data download request message is transmitted to the server 200 using the established TCP connection (S307).

The server 200 transmits a response message and data corresponding to the download request message to the download unit 113 by using the TCP connection set by the connection manager 112 of the browser 110 (S308).

The download unit 113 requests the rendering unit 114 to display the response message and data received from the server 200 on the screen of the terminal 100 through a TCP connection, and the server 200 and the terminal through the TCP connection. After measuring the data transmission speed between the 100, the measured transmission speed and the TCP connection information are stored in the data unit 115.

The data unit 115 not only stores the data transfer rate and TCP connection information transmitted from the download unit 113, but also calculates an average transfer rate between the server 200 and the terminal 100 using the data transfer rate, and the last connection time. And HTTP version information of the server 200 (S309).

The rendering unit 114 renders the data downloaded from the download unit 113 and displays the rendered data on the display unit 120 of the terminal 100 (S310).

As a result of the determination of step 305, when the connection state information of the server 200 exists in the data unit 115, the connection manager 112 determines whether the connection state information of the server 200 retrieved from the data unit 115 is determined. The HTTP protocol version information of the server 200 is checked (S311).

As a result of checking in step 311, when the protocol supported by the server 200 is HTTP 1.0, the browser installed in the recording medium 110 of the terminal 100 proceeds to steps 306, 307, 308, 309, and 310 as described above. Here, after the terminal 100 downloads the data from the server 200, the transmission rate information and the TCP connection information according to the data download between the server 200 and the terminal 100 stored in the data unit 115 are not stored. It may not.

As a result of checking in step 311, when the protocol supported by the server 200 is HTTP 1.1, the connection manager 112 determines whether there is a TCP connection between the server 200 providing the data and the terminal 100 ( S312).

As a result of the determination of step 312, when there is no TCP connection between the server 200 and the terminal 100, the recording medium 110 of the terminal 100 proceeds to steps 306, 307, 308, 309 and 310 as described above. .

As a result of the determination of step 312, when there is a TCP connection between the server 200 and the terminal 100, the connection manager 112 extracts the connection state information of the server 200 from the data unit 115, and extracts the extracted connection state information. The average transmission rate value of the data is compared with a preset threshold value in step S313.

A comparison formula between the average transmission rate value and the preset threshold value is shown in Equation 3 below.

TS * w + MTS (1-w) threshold

(w: weight for recent baud rate, 0 = w <= 1)

As a result of the comparison of step 313, the connection manager 112 determines that the average transmission rate of the data is equal to or less than the preset threshold, and the browser 110 of the terminal 100 proceeds to steps 306, 307, 308, 309, and 310 as described above. Proceed.

As a result of the comparison of step 313, if the average transmission rate value of the data exceeds a preset threshold value, the connection manager 112 uses the TCP connection established at the time of connection between the server 200 and the terminal 100 to the server 200. A data download request message is sent to the server (S314).

The download unit 113 downloads a response message and data from the server 200 receiving the data download request message using a TCP connection established at the time of connection, and displays the downloaded data on the screen of the terminal 100. In operation 114, the rendering unit 114 displays the data downloaded from the download unit 113 on the screen through the display unit 120 of the terminal 100 through a predetermined rendering process (S315 and S316).

As described above, the present invention manages the TCP connection state information of the server, and determines whether to generate a new TCP connection setting between the client system and the server using the average transmission rate value of the server in the connection state information, based on the determination result By downloading data from the server through the TCP connection established between the server and the client, there is an effect that can improve the response speed between the client and the server.

In addition, by recording the TCP connection status information between the server and the client rather than the web document on the low-capacity recording medium of the client system, the response time between the embedded terminal and the server, which is a low-capacity client system, can be reduced and network resources can be saved. It has an effect.

Claims (7)

In the recording medium is stored on the client side of the client / server system established through a communication network to store a TCP (Transmission Control Protocol) connection and requesting data, And a browser for storing the information of the connection status of the server with the server and downloading the data through the set connection of the server between the server and the client terminal based on the stored information of the connection of the recipe according to the occurrence of the event. The recording medium on which the browser is stored. The method of claim 1, The browser, A data unit for storing recipe connection state information for the servers; A main unit receiving a web document according to the input event from the server, analyzing the received web document, and sending a download request message; A connection management unit for retrieving connection state information from the data unit according to the download request message transmitted from the main unit, and establishing a recipe connection by comparing the retrieved connection state information with a preset threshold value; A download unit which downloads data from the server through the set recipe connection; And a rendering unit for rendering the downloaded data and displaying the downloaded data on the screen. The method of claim 2, Recipe connection state information of the data unit, A HyperText Transfer Protocol (HTTP) version information of the server, a recent access time of the terminal access, a data transfer rate at the latest access, and an average transfer rate; And the connection manager compares an average transmission speed value between the server and the terminal stored in the data unit with a preset threshold to determine whether to establish a new TPC connection. The method of claim 2, The download unit, And storing a data transfer rate between the server and the terminal after receiving a response message and data from the server according to the data download request message of the terminal. Claims [1] A method of downloading data using a browser provided on a client side of a client / server system constructed through a communication network, the method comprising: A first step of downloading a web document from the server and analyzing the downloaded web document through a recipe connection with the server according to a client input event; A second step of sending a data download message based on the analysis result of the web document; Extracting recipe connection state information of the server in response to the message, and comparing the connection state information with a preset threshold value; Based on the comparison result, when the connection state information is less than or equal to the threshold, the server establishes a recipe connection between the server and the terminal, and when the connection state information exceeds the threshold, the data is downloaded using the recipe connection. And a fourth step of displaying it on the screen. The method of claim 5, The third step, Checking an HTTP protocol version supported by the server; When the HTTP protocol version is 1.1 as a result of the check, it is determined whether there is a recipe connection setting between the server and the terminal. Comprising the step of comparing the data download method of a built-in browser with a browser. The method of claim 6, Checking the HTTP protocol version of the server, And resetting a recipe connection between the server and the terminal when the HTTP protocol version of the server is 1.0.