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 PDFInfo
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- 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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- markup page
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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.
Description
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
The markup
The
That is, the
That is, the
When receiving a markup page request from the
At this time, the
The
The data compressed by the lossy compression method in the
At this time, the
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
As shown in the figure, the
The markup
The JPG image
The 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
For example, when the supported resolution of the
Here, the reference resolution may be stored in the generated image format
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
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
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
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
The web viewer server requests the corresponding markup
The markup
The
The
If the resolution of the
Then, the
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)
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KR20080089747A KR101432309B1 (en) | 2008-09-11 | 2008-09-11 | Web viewer server and control method thereof, system for providing markup page comprising the web viewer server and control method thereof |
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CN106717007B (en) | 2014-07-30 | 2020-04-03 | Sk 普兰尼特有限公司 | Cloud end streaming media server |
WO2016017952A1 (en) * | 2014-07-30 | 2016-02-04 | 엔트릭스 주식회사 | System for cloud streaming service, method for same using still-image compression technique and apparatus therefor |
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KR20050003373A (en) * | 2002-04-19 | 2005-01-10 | 라딕스 피티이 엘티디 | System and method for use of multiple applications |
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