KR101432309B1 - Web viewer server and control method thereof, system for providing markup page comprising the web viewer server and control method thereof - Google Patents

Web viewer server and control method thereof, system for providing markup page comprising the web viewer server and control method thereof Download PDF

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Publication number
KR101432309B1
KR101432309B1 KR20080089747A KR20080089747A KR101432309B1 KR 101432309 B1 KR101432309 B1 KR 101432309B1 KR 20080089747 A KR20080089747 A KR 20080089747A KR 20080089747 A KR20080089747 A KR 20080089747A KR 101432309 B1 KR101432309 B1 KR 101432309B1
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South Korea
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web viewer
markup page
viewer terminal
resolution
server
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KR20080089747A
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Korean (ko)
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KR20100030833A (en
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권기범
정태식
윤용진
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주식회사 엘지유플러스
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Abstract

The present invention relates to a system and method for providing a markup page including a web viewer server, a control method thereof, and a web viewer server. A markup page providing system according to the present invention includes: a markup page providing server for providing a markup page; A web viewer terminal for requesting a markup page through a wireless communication network, processing a markup page composed of compressed image data received according to the request, and displaying the processed markup page on a display unit; Up page is received from the web viewer terminal, the corresponding markup page is requested to the markup page providing server, and the received markup page is interpreted and generated as image data And compressing the image data in a lossy compression mode when the supported resolution of the web viewer terminal is higher than the reference resolution, and when the supported resolution of the web viewer terminal is lower than the reference resolution, And transmitting the compressed data to the web viewer terminal.

Figure R1020080089747

Description

TECHNICAL FIELD [0001] The present invention relates to a markup page providing system including a web viewer server, a control method thereof, and a web viewer server, and a control method thereof. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

The present invention relates to a markup page providing system including a web viewer server and a control method thereof and a web viewer server and a control method thereof, and more particularly, to a markup page providing system including a web viewer terminal for receiving and processing an image- A web viewer server for transmitting image data corresponding to an optimal markup page in accordance with a resolution, a control method thereof, and a markup page providing system including the web viewer server and a control method thereof.

2. Description of the Related Art [0002] In general, a mobile communication terminal performs voice communication over the air, but in recent years, various functions other than voice communication have been added to mobile communication terminals due to the development of mobile communication technology. Among them, there is a desire for the use of the Internet using the mobile communication terminal due to the activation of the Internet through the wired network, and the communication companies have added the function of enabling the wireless Internet use to the mobile communication terminal.

The Internet is a service based on the Transmission Control Protocol / Internet Protocol (TCP / IP), such as e-mail, remote computer telnet, file transfer (FTP), Usenet News, , Internet information search (Gopher), Internet conversation and discussion (IRC), electronic bulletin board (BBS), hypertext information browsing (WWW: World Wide Web), online games, (HyperText Transfer Protocol) based web browsing.

However, since the mobile communication terminal is a main feature of the mobile communication terminal, the hardware specification is inferior to that of the home computer, and this causes a decrease in the processing speed of the wireless Internet. That is, when a function of processing a web page is added to a mobile communication terminal in the same manner as a home computer, the processing speed of a web page is significantly lowered.

Accordingly, mobile communication companies have sought various ways to enhance the convenience of users of wireless Internet to subscribers. One of them is web viewer system.

The web viewer system may be provided with only a function for processing images except for the function of interpreting the markup tag of the web page provided by the web server in the mobile communication terminal, The web viewer server parses and renders the web page, captures the processed web page as an image, and transmits the image to the mobile communication terminal.

This web viewer system can realize an image processing function only in a mobile communication terminal without having a function of interpreting all markup tags in a mobile communication terminal, i.e., a full browser function, Web browsing is enabled and widely used.

A mobile communication terminal used in such a web viewer system is referred to as a " web viewer terminal "

However, the resolution of the web viewer terminal differs depending on the model. For example, the maximum resolution that can be supported by a web viewer terminal A may be 800 * 480, and the maximum resolution that can be supported by another web viewer terminal B may be 320 * 240.

Generally, the difference in the maximum resolution that can be supported by the web viewer terminal is proportional to the size of the display unit (e.g., liquid crystal display) of the web viewer terminal, and the web viewer terminal supporting the smaller resolution has a smaller display unit.

However, the conventional web viewer server has failed to provide a markup page image of the same quality to each terminal by transmitting a markup page corresponding image of the same format to a web viewer terminal having different resolutions that can be supported.

It is an object of the present invention to provide a web viewer server and a control method thereof for providing a mark-up page corresponding image of a maximum quality to a web viewer terminal supporting different resolutions, A markup page providing system including the web viewer server, and a control method thereof.

According to an aspect of the present invention, there is provided a markup page providing system including: a markup page providing server for providing a markup page; A web viewer terminal for requesting a markup page through a wireless communication network, processing a markup page composed of compressed image data received according to the request, and displaying the processed markup page on a display unit; Up page is received from the web viewer terminal, the corresponding mark-up page is received and transmitted to the mark-up page providing server, and the received mark-up page is interpreted and generated as image data And compressing the image data in a lossy compression mode when the supported resolution of the web viewer terminal is higher than the reference resolution, and when the supported resolution of the web viewer terminal is lower than the reference resolution, And transmits the compressed data to the web viewer terminal.

In order to achieve the above object, according to a request of a web viewer terminal according to the present invention, a markup page is requested to a markup page providing server and received, and the received markup page is converted into compressed image data, The web viewer server for transmitting to the viewer terminal includes a markup page analyzing unit for parsing and rendering the markup page received from the markup page providing server; A lossy compressed image generation unit for generating lossy compressed image data after capturing a markup page rendered by the markup page analysis unit; A lossless compressed image generation unit for generating lossless compressed image data after capturing a markup page rendered by the markup page analysis unit; Determining whether to generate a lossy compressed image or a lossless compressed image by determining supported resolution information of the web viewer terminal based on the information included in the markup page request signal of the web viewer terminal, A generation image format determination controller for controlling either the generation unit or the lossless compressed image generation unit; And an image data transmission unit for transmitting the image data generated by the lossy compressed image generation unit and the lossless compressed image generation unit to the web viewer terminal.

According to another aspect of the present invention, there is provided a method of controlling a markup page providing system, the method comprising: transmitting a markup page request signal in response to a user command; Requesting a markup page providing server from a web viewer server which receives a markup page request signal from the web viewer terminal; Extracting a requested markup page from the markup page providing server and transmitting the extracted markup page to the web viewer server; Parsing and rendering the markup page received from the markup page providing server by the web viewer server; The web viewer server determining the resolution of the web viewer terminal based on the terminal information included in the markup page request signal of the web viewer terminal; The web viewer server compares the resolution of the web viewer terminal with the previously stored reference resolution to capture the parsed and rendered markup page if the resolution of the web viewer terminal is higher than the reference resolution, If the resolution of the web viewer terminal is lower than the reference resolution, capturing the parsed and rendered markup page to generate a lossless compressed image, and transmitting the generated image to the web viewer terminal .

In order to achieve the above object, according to a request of a web viewer terminal according to the present invention, a markup page is requested to a markup page providing server and received, and the received markup page is converted into compressed image data, A method of controlling a web viewer server for transmitting to a viewer terminal, the method comprising: requesting a markup page to a corresponding markup page providing server upon receiving a markup page request signal of the web viewer terminal; Parsing and rendering a markup page received from the markup page providing server; Determining a resolution of the web viewer terminal based on the terminal information included in the markup page request signal of the web viewer terminal; Comparing the resolution of the web viewer terminal with a pre-stored reference resolution, generating a lossy compressed image by capturing the parsed and rendered markup page if the resolution of the web viewer terminal is higher than the reference resolution, If the resolution of the viewer terminal is lower than the reference resolution, capturing the parsed and rendered markup page to generate a lossless compressed image, and transmitting the generated image to the web viewer terminal.

As described above, according to the present invention, an image file generated by a lossy compression method is transmitted as an image file corresponding to a markup page in a web viewer terminal having a relatively high support resolution, It is possible to increase the data transmission efficiency by compressing and transmitting the image data at a high compression efficiency by the lossy compression method. In the web viewer terminal having a relatively low support resolution, the image file generated by the lossless compression method as the image file corresponding to the markup page So that the screen image is minimized even when the screen is enlarged in the web viewer terminal, so that the high screen quality can be maintained.

In particular, a web viewer terminal having a relatively high support resolution generates and transmits a markup page corresponding image in the JPG format, and a web viewer terminal having a relatively low support resolution generates and transmits a markup page corresponding image in the PNG format, The screen quality of the markup page displayed on the web viewer terminal can be maintained as high as possible. In other words, the image of JPG format is much smudged on the screen when enlarging the screen, whereas the PNG format image is much smoother than the JPG format image even when the screen is enlarged. In the case of a web viewer terminal frequently used for enlargement, an image in the PNG format is suitable.

Furthermore, the image corresponding to the markup page of the PNG-8 format is generated and transmitted to the web viewer terminal having a relatively low support resolution, thereby further reducing the amount of image data packets compared to the JPG format. Web viewer terminals with relatively low resolution support can make the difference between the image screen quality of JPG format including all colors and image screen quality created by PNG format which is lossless compression method (8 bit-256 color) It is advantageous to reduce the communication cost of the user by reducing the amount of image data packets transmitted by the PNG-8 format.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A markup page providing system according to an embodiment of the present invention includes a web viewer terminal 100, a web viewer server 200, a markup page providing server 300, and a database server 400 as shown in FIG. .

The markup page providing server 300 is a server provided in the Internet network 530 that provides a markup page in a markup language. In this case, the markup language is a language that allows a specific meaning to be given to the text data by attaching a kind of tag to a predetermined text. The markup language includes, for example, HyperText Markup Language (HTML), Extensible Markup Language There are many kinds.

The web viewer terminal 100 includes a wireless communication terminal such as a mobile phone and a PDA (Personal Digital Assistants). In particular, the web viewer terminal 100 has a function of processing an image-type markup page for browsing the web.

That is, the web viewer terminal 100 transmits a request signal of the markup page to the markup page providing server 300 according to a command of the user, and transmits the markup page of the image form received from the markup page providing server 300 (For example, an LCD (Liquid Crystal Display)). The web viewer terminal 100 transmits a coordinate value corresponding to a user's input key operation to the web viewer server 200 to perform a function corresponding to the hyperlink included in the markup page of the image type.

That is, the web viewer terminal 100 does not have a function of parsing and rendering the markup tag, and the markup page received from the web viewer server 200 is also an image, so that the hyperlink included in the markup page is selected The web viewer terminal 100 performs web browsing by transmitting the coordinate value of the location that the user clicks to the web viewer server 200. [

When receiving a markup page request from the web viewer terminal 100, the web viewer server 200 requests a corresponding markup page to the markup page providing server 300 and receives the markup page, If the supported resolution value of the web viewer terminal 100 is larger than the reference resolution value, compresses the image data into a lossy compression format and transmits the compressed image data to the web viewer terminal 100, If the supported resolution value of the image data is smaller than the reference resolution value, the image data is compressed by the lossless compression method and transmitted to the web viewer terminal 100.

At this time, the web viewer server 200 confirms the supported resolution value of the web viewer terminal 100 based on the information transmitted from the web viewer terminal 100. For example, if the terminal-supported resolution information is included in the markup page transmission request signal transmitted from the web viewer terminal 100, the web viewer server 200 transmits the markup page transmission request signal to the web viewer terminal 100, If the markup page transmission request signal transmitted from the web viewer terminal 100 contains only the terminal information (telephone number, etc.), the web viewer server 200 checks the resolution value, The resolution information of the web viewer terminal 100 can be confirmed by requesting the server 400. [ Here, the database server 400 is a server including customer information and terminal information.

The web viewer server 200 and the database server 400 are provided in the mobile communication network 500. The web viewer server 200 communicates with the web viewer terminal 100 through the base station 510, The markup page providing server is provided in the Internet network 530 connected to the mobile communication network 500 and the router 520. However, the configuration of the communication network may be variously changed, and in particular, the web viewer server 200 and the database server 400 may also be provided in the Internet 530.

The data compressed by the lossy compression method in the web viewer server 200 is a file of JPEG (Joint Photographic Experts Group) format, and the data compressed by the lossless compression method may be a file of PNG (Portable Network Graphics) format.

At this time, the web viewer server 200 may perform the color information conversion process so that when the image data is compressed by the lossless compression method, the number of color types included in the compressed data is equal to or less than a preset number. For example, the web viewer server 200 can compress image data in the PNG-8 format. The PNG-8 method limits the color included in the generated image to 256 colors that can be represented by 8 bits. By reducing the number of colors included in the image data, the data capacity can be greatly reduced, but the lossless compression method is employed. And the data itself is stored.

In this case, the color information conversion process is further included so that the number of color types included in the image is equal to or less than a predetermined number. That is, for colors not included in 256 colors based on 256 colors, conversion is performed to the closest color among 256 colors by a known algorithm of various methods.

An example of a function block of the web viewer server 200 that performs the above-described functions is shown in FIG.

As shown in the figure, the web viewer server 200 according to an embodiment of the present invention includes a markup page analyzer 210, a generated image format determination controller 220, a JPG image file generator 230, An image file generation unit 240, and an image file transfer unit 250. [

The markup page analyzing unit 210 performs a function of interpreting the markup page received by the markup page providing server 300 through the rotor. That is, it performs a function of parsing and rendering a markup page including a markup tag.

The JPG image file generation unit 230 is a kind of a lossy compressed image generation unit that performs a function of capturing a markup page rendered by the markup page analysis unit 210 and generating lossy compressed image data. That is, the lossy compressed image image means an image compressed, for example, such as a JPEG image, so as to reduce the data capacity of the entire image, while preserving the image data as it is, while partially accepting loss of information. A lossy compressed image can compress at a greater rate than a lossless compressed image under the same conditions. This results in an effect of increasing data transmission efficiency.

The PNG image file generating unit 240 is a kind of lossless compressed image generating unit that performs a function of capturing a markup page rendered by the markup page analyzing unit 210 and generating lossless compressed image data. The lossless compressed image means an image compressed according to a predetermined compression algorithm while preserving the image data as it is, for example, a PNG image.

Lossless compressed images are advantageous in image quality because they do not cause loss in image data before compression, while the image capacity is reduced rather than the data before compression.

On the other hand, the generated image format determination controller 220 determines the supported resolution information of the web viewer terminal 100 based on the information included in the markup page request signal of the web viewer terminal 100 to generate a lossy compressed image Determines whether to generate a lossless compressed image, and controls either the lossy compressed image generation unit or the lossless compressed image generation unit according to the determination.

For example, when the supported resolution of the web viewer terminal 100 is higher than the reference resolution, the generated image format determination control unit 220 captures the parsed and rendered markup page and outputs a JEPG The image processing unit 230 controls the JPG image file generating unit 230 to generate the parsed and rendered markup page as a lossless compressed image file The PNG image file generation unit 240 generates a PNG image file corresponding to the PNG image file.

Here, the reference resolution may be stored in the generated image format determination control unit 220 itself or in a separate storage unit (not shown).

The image file (data) transmission unit transmits the image data generated by one of the lossy compressed image generation unit and the lossless compressed image generation unit, that is, the image file, to the web viewer terminal 100.

Accordingly, even in the case of a markup page including an image such as a photograph by transmitting a lossy compressed image file, for example, a JPG image file, to the web viewer terminal 100 having a relatively high resolution, the compression rate is excellent, Since a lossless compressed image file, for example, a PNG image file, is transmitted to the web viewer terminal 100 which requires a lot of screen enlargement due to its relatively low resolution, it is possible to maintain a high quality compared to a JPG image file even when enlarging a screen.

In addition, when the PNG-8 method is used, the PNG image file is limited to 256 colors that can be represented by 8 bits at the time of creation of the PNG image file.

The difference in quality between the PNG format image and the JPG format image is shown in FIGS. 3 and 4. FIG.

3 (a) and 4 (a) are images obtained by partially enlarging an image in JPG format, and FIG. 3 (b) and FIG. 4 (b) are images obtained by partially enlarging an image in PNG format. Referring to the figure, it can be seen that when the image of the JPG format is enlarged, the portion which is dirty like a smear appears more than when the image of the PNG format is enlarged.

Accordingly, as described above, the web viewer terminal 100 having a low supporting resolution can transmit the lossless compressed image of the PNG format instead of the JPG format, so that the same quality of screen quality can be maintained regardless of whether the terminal supports the resolution .

In addition, when a method of limiting the number of colors is selected as in the case of the PNG-8 method, although it can be limited in terms of color representation, the capacity can be greatly reduced and high screen quality can be maintained.

Hereinafter, a control flow of a markup page providing system according to an embodiment of the present invention will be described with reference to FIG.

The web viewer terminal 100 transmits a markup page request signal to the web viewer server 200 when the user has a web browsing command (step S1). Here, the markup page request signal may include an address of a markup page desired by the user, for example, a URL (Uniform Resource Locator) and resolution information.

The web viewer server requests the corresponding markup page providing server 300 to transmit the markup page based on the address of the requested markup page (step S3).

The markup page providing server 300 extracts a markup page requested from the web viewer server 200 and transmits the extracted markup page (step S5).

The web viewer server 200 receiving the markup page from the markup page providing server 300 interprets, i.e., parses and renders the markup page (step S7).

The web viewer server 200 compares the resolution based on the resolution information included in the markup page request signal of the web viewer terminal 100 with the reference resolution (step S9).

If the resolution of the web viewer terminal 100 is equal to or greater than the reference resolution, the parsed and rendered markup page is captured to generate a JPG image file (step S11). If the resolution of the web viewer terminal 100 is If it is smaller than the reference resolution, the parsed and rendered markup page is captured to generate a PNG image file (step S13).

Then, the web viewer server 200 transmits the generated image file to the web viewer terminal 100 (step S15), and the web viewer terminal 100 processes the received markup page corresponding image file, (Step S17).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood that such variations and modifications are intended to be included in the scope of the appended claims.

1 is a general schematic configuration diagram of a markup page providing system according to an embodiment of the present invention,

Figure 2 is a functional block diagram of the web viewer server of Figure 1,

FIGS. 3 and 4 are views for explaining a comparison between the image of the JPG format and the image of the PNG format partially enlarged in the web viewer terminal,

5 is a control flowchart of a markup page providing system according to an embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

100: Web viewer terminal 200: Web viewer server

300: Markup page providing server 400: Database server

210: Markup page interpreting unit 220: Generated image format determination control unit

230: JPG image file generation unit 240: PNG image file generation unit

250: image file transfer unit

Claims (10)

A markup page providing server for providing a markup page; A web viewer terminal for requesting a markup page through a wireless communication network, processing a markup page composed of compressed image data received according to the request, and displaying the processed markup page on a display unit; Up page is received from the web viewer terminal, the corresponding mark-up page is received and transmitted to the mark-up page providing server, and the received mark-up page is interpreted and generated as image data And compressing the image data in a lossy compression mode when the supported resolution of the web viewer terminal is higher than the reference resolution, and when the supported resolution of the web viewer terminal is lower than the reference resolution, And a web viewer server that compresses the web page to the web viewer terminal and transmits the compressed web page to the web viewer terminal. The method according to claim 1, The web viewer terminal transmits its own resolution information when requesting a markup page, Wherein the web viewer server compares the resolution according to the resolution information received from the web viewer terminal with the reference resolution. The method according to claim 1, Further comprising a database server in which each web viewer terminal information is stored, Wherein the web viewer server receives the resolution of the web viewer terminal from the database server based on the telephone number of the web viewer terminal requesting the markup page and compares the resolution with the reference resolution. The method according to claim 1, Wherein the data compressed by the lossy compression method in the web viewer server is a file of JPEG (Joint Photographic Experts Group) format, and the data compressed by the lossless compression method is a file of PNG (Portable Network Graphics) format. Delivery system. 5. The method of claim 4, Wherein the web viewer server performs color information conversion processing so that when the image data is compressed by the lossless compression method, the number of color types included in the compressed data is less than or equal to a predetermined number, . A web viewer server for requesting and receiving a markup page from a markup page providing server in response to a request from a web viewer terminal, converting the received markup page into compressed image data, and transmitting the compressed markup page to the web viewer terminal, A markup page parser for parsing and rendering the markup page received from the markup page providing server; A lossy compressed image generation unit for generating lossy compressed image data after capturing a markup page rendered by the markup page analysis unit; A lossless compressed image generation unit for generating lossless compressed image data after capturing a markup page rendered by the markup page analysis unit; The controller determines the resolution information of the corresponding web viewer terminal based on the information included in the markup page request signal of the web viewer terminal and determines the lossy compressed image generator and the lossless compressed image generator according to the determined resolution information of the web viewer terminal. A generation image format determination controller for controlling any one of the generation units; And an image data transmitting unit for transmitting the image data generated by the lossy compressed image generating unit and the lossless compressed image generating unit to the web viewer terminal. The method according to claim 6, Further comprising a storage unit for storing a reference resolution, Wherein the generated image format determination controller determines that the markup page parsed and rendered when the supported resolution of the web viewer terminal is higher than the reference resolution stored in the storage unit is generated as a Joint Photographic Experts Group And controlling the compressed image generating unit to generate the parsed and rendered markup page as a PNG (Portable Network Graphics) image file when the supported resolution of the web viewer terminal is lower than the reference resolution stored in the storage unit, And controls the image generating unit. (a) a web viewer terminal transmitting a markup page request signal in response to a user command; (b) receiving a markup page request signal from the web viewer terminal, the web viewer server requesting a markup page from the corresponding markup page providing server; (c) extracting the requested markup page from the markup page providing server and transmitting the extracted markup page to the web viewer server; (d) parsing and rendering the markup page received from the markup page providing server by the web viewer server; (e) the web viewer server determining the resolution of the web viewer terminal based on the terminal information included in the markup page request signal of the web viewer terminal; (f) The web viewer server compares the resolution of the web viewer terminal with the previously stored reference resolution, and if the resolution of the web viewer terminal is higher than the reference resolution, the parsed and rendered markup page is captured If the resolution of the web viewer terminal is lower than the reference resolution, the parsed and rendered markup page is captured to generate a lossless compressed image, and the generated image is transmitted to the web viewer terminal The method comprising the steps of: 9. The method of claim 8, In the step (f) Wherein the lossy compressed image generated by the web viewer server is an image of JPEG (Joint Photographic Experts Group) format, and the lossless compressed image is an image of PNG (Portable Network Graphics) format. A method of controlling a web viewer server for requesting and receiving a markup page from a markup page providing server according to a request of a web viewer terminal, converting the received markup page into compressed image data, and transmitting the compressed image data to the web viewer terminal , Requesting a markup page to a corresponding markup page providing server upon receiving a markup page request signal of the web viewer terminal; Parsing and rendering a markup page received from the markup page providing server; Determining a resolution of the web viewer terminal based on the terminal information included in the markup page request signal of the web viewer terminal; Comparing the resolution of the web viewer terminal with a pre-stored reference resolution, generating a lossy compressed image by capturing the parsed and rendered markup page if the resolution of the web viewer terminal is higher than the reference resolution, If the resolution of the viewer terminal is lower than the reference resolution, capturing the parsed and rendered markup page to generate a lossless compressed image, and transmitting the generated image to the web viewer terminal Control method of web viewer server.
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