KR20010086880A - Method and Apparatus for Data Acquisition and Controlling Equipment using Mobile Telecommunication Terminal - Google Patents

Abstract

PURPOSE: An information acquisition using a mobile communication terminal and an apparatus and a method for controlling a device are provided to display by downloading data through communication network or control an electronic device by using the data. CONSTITUTION: A mobile communication terminal performs picture communication with a camera. When an icon pattern where a code value is applied is taken a picture of through a camera part(250), an image capture part(290) captures a frame of images so as to store the frame. A pattern recognition part(320) receives the pattern of the icon images captured by the image capture part(290) and calculates correlation by a standard pattern so as to output the result. A code extract part(330) extracts the code value from the icon pattern according to the output result of the pattern recognition part(320). A controller(190) outputs the extracted code value and transmission position data which are stored in a memory through a communication network and control to display information corresponding to the code value downloaded thought the communication network.

Description

Apparatus and method for obtaining information and controlling device using mobile communication terminal {Method and Apparatus for Data Acquisition and Controlling Equipment using Mobile Telecommunication Terminal}

The present invention relates to an information acquisition and device control apparatus and method using a mobile communication terminal, and in particular, by using a mobile communication terminal equipped with a camera after downloading and recognizing a pattern for providing data by downloading desired data through a communication network An apparatus and method for obtaining information and controlling a device using a mobile communication terminal for displaying or controlling an electronic device using the data.

With the rapid development of mobile communication, many additional services are provided, and the most representative example is a function that can search and download necessary information while moving by accessing a web site on the Internet using a mobile communication terminal.

In order to implement such a function, a representative example of a communication means that is in the spotlight as the next generation mobile communication is IMT 2000 (International Mobile Telecommunications 2000).

In the case of the IMT 2000, a large liquid crystal display panel is provided, and a web browser is provided within the IMT 2000 to provide easy access to the Internet.

In addition, the camera allows a video call with the other party.

However, even if the IMT 2000 is used to implement access to the Internet, it is necessary to go through several steps in order to receive certain information.

In other words, the user must enter the domain address of the web site he wants to access, select the necessary information within the site, and then go through the following steps to download it.

Therefore, it is quite cumbersome for the user, and it is cumbersome to always remember or record the domain address or the like for obtaining the information.

Accordingly, in view of the above problems, the present invention uses a mobile communication terminal equipped with a camera to acquire a pattern image recorded in various media in a non-contact manner in a visible or invisible manner, and then obtains a specific code therefrom. It is an object of the present invention to provide an apparatus and method for acquiring information and controlling a device using a mobile communication terminal which can extract and display information on the terminal itself according to the code and display the information or receive information from a corresponding web site through a communication network. .

Another object of the present invention is to obtain a pattern image obtained from an electronic device by using a camera, information acquisition and device control apparatus using a mobile communication terminal for extracting a specific code therefrom and sending a control command to the electronic device; To provide a method.

It is still another object of the present invention to obtain a pattern image obtained from an electronic device by using a camera, extract a specific code therefrom, and send a control command to a specific web site using the remote control of the electronic device connected thereto. To make it possible.

1 is a block diagram of an information acquisition and device control apparatus using a mobile communication terminal of the present invention.

FIG. 2 is a detailed block diagram of the pattern recognition unit of FIG. 1. FIG.

3 is a system overview for downloading data and controlling devices using a communication network.

4 is a flowchart illustrating a method of obtaining information using a mobile communication terminal of the present invention.

5 is a flowchart illustrating a code extraction process in the present invention.

6 is a flowchart illustrating a device control method using a mobile communication terminal of the present invention;

7 is a view showing an example of an icon pattern implemented in the present invention.

8 is a view showing a value of each cell according to the change of the size of the icon pattern.

FIG. 9 illustrates a case in which the size of the icon pattern illustrated in FIG. 8 is further expanded.

FIG. 10 is a view showing a state in which the patterns of FIG. 7 overlap with each other in size; FIG.

11 is a view for explaining a watermarking method applied in the present invention.

12 shows an example of a filter for extracting a code value from an icon pattern.

13 and 14 show a state in which the pattern according to the present invention is applied.

<Explanation of symbols for the main parts of the drawings>

100: duplexer 110: data transmission unit

120: data receiving unit 130: frequency synthesizer

140: liquid crystal display unit 150: control signal generator

160: audio unit 170: microphone

180: speaker 190: control unit

200: memory 210: key input unit

220: light amount detection unit 230: lighting

240: lighting driver 250: imaging unit

260: analog processing unit 270: A / D converter

280: Image memory 290: Image capture unit

300: memory controller 310: image processor

320: pattern recognition unit 330: code extraction unit

321: scanning unit 322: correlation calculation unit

323: filter selection unit 324: filter unit

400: mobile communication terminal 500: database

600: Internet 700: Home Host Computer

800: control target

The information acquisition apparatus using the mobile communication terminal of the present invention for achieving the above object,

A mobile communication terminal provided with a camera and capable of video communication,

An image capture unit for capturing and storing an image thereof by one frame when an icon pattern to which a code value is assigned is photographed through the image capture unit;

A pattern recognition unit receiving a pattern of the icon image captured by the image capturing unit, calculating a correlation degree based on a reference pattern, and outputting a result;

A code extracting unit extracting a code value from an icon pattern according to an output result of the pattern recognizing unit;

And a controller configured to output the extracted code value and transmission position data stored in a memory through a communication network and to display information corresponding to the code value downloaded through the communication network.

The pattern recognition unit may include: a scanning unit scanning an input icon pattern by a filter provided from a filter unit;

A correlation calculation unit that calculates a correlation between the icon pattern and the filter using the scanning result of the scanning unit, and compares the value with a reference value and outputs the result to the code value extraction unit;

A filter selection unit for selecting one of a plurality of filters stored in the filter unit according to a result of the selection of the correlation calculator;

The filter selector is configured to provide a filter for providing the selected filter to the scanning unit.

On the other hand, the information acquisition method using a mobile communication terminal,

A first process of driving a camera to acquire an image of an icon pattern given a code value and converting the image into a digital signal when a camera driving request is generated from a user;

A second step of extracting a specific code from the icon pattern converted into a digital signal;

A third step of downloading data corresponding to the code from the communication network or maintaining a communication connection when a network connection request is generated from the user after the specific code is extracted;

When a network connection request does not occur from the user, the fourth process of reading and displaying data corresponding to the code from the memory is performed.

In addition, the second process,

A first step of scanning an icon pattern by selecting a filter having the largest size when an icon pattern is input;

A second step of calculating a correlation degree according to the scanning result and comparing it with a reference value;

A third step of extracting a code value of the icon pattern in the filter area if the correlation is greater than or equal to the reference value;

If the correlation is less than the reference value it is characterized in that it is carried out as a fourth step of performing a second step from the second step after selecting a smaller filter.

An embodiment of the present invention configured as described above will be described in detail.

First, an icon pattern having a structure of fractal geometry will be described to implement the present invention.

In the present invention, since a camera provided in the mobile communication terminal is used to extract a specific code from a visible or invisible icon pattern in a non-contact manner, the size of the icon image acquired varies according to the distance between the icon pattern and the camera. You lose.

Therefore, even if the distance between the icon pattern and the camera changes, an accurate icon pattern image should be obtained.

To this end, in the present invention, by forming an icon pattern having a structure of fractal geometry, as shown in FIG. 13, the icon I is visible or invisible at a predetermined position in printed matters such as a movie poster, a newspaper, a magazine, and the like. Will be inserted.

In addition, as shown in FIG. 14, it may be visually or invisibly displayed on a moving picture or a main body of a monitor or a television.

The formation of the icon pattern will be described with reference to FIGS. 7 to 10.

As shown in Fig. 7A, when the icon size of the most basic unit for containing information is described as a grid size of 2 * 2, the gray level value of the hatched portion is referred to as '1'. If the part is not '0', it will have the value as shown in (B).

Based on this, a process of forming an icon pattern so as to have constant information as shown in FIG. 7B even if its size is changed by the overlapping structure will be described.

When the gray level value corresponding to the icon pattern of size 2 * 2 as shown in FIG. 8A is extended to the icon pattern of size 4 * 4, each area S1 and S2 as shown in (B). , S3, S4) are partitioned in the form of (A).

Therefore, by overlaying each icon S1, S2, S3, S4 with an icon of the basic unit shown in (A), and then adding the value for each, the level value in each cell is reduced as shown in (C). Is generated.

At this time, if all the level values in the areas S1, S2, S3, and S4 are added, the area S1 is '6', the area S2 is '2', the area S3 is '2', and the area S4 is '6'.

If the added value is larger than the number of cells, that is, the number of cells in each region, '1', the value is '1'. Otherwise, '0', the icon of the basic unit as shown in FIG. It will have the level value again.

If the size of the icon is expanded to 8 * 8, for example, as shown in Fig. 9, as shown in Fig. 9A, each area S1, S2, It is divided into S3, S4).

Therefore, if the icons of the basic unit as shown in Fig. 8A are added to each of these areas, and then the values are added to each of the areas, as shown in Fig. 9B, each of the areas S1, S2, S3, and S4. Is generated at each cell level.

At this time, if all the level values in the areas S1, S2, S3, and S4 are added, the area S1 is '24', the area S2 is '8', the area S3 is '8', and the area S4 is '24'.

If the added value is larger than the number of cells, that is, the number of cells in each region, '1', the value is '1'. Otherwise, '0', the icon of the basic unit as shown in FIG. It will have the level value again.

In this way, an N * N icon having a level value of an icon of a basic unit as shown in FIG. 8A can be formed. For example, a program having a gray level value as shown in FIG. An icon pattern with the structure of the fractal geometry is formed.

That is, the level values of the icons of the basic unit are overlapped, and only the size thereof is different, but when the levels are divided by regions, they have a constant level value.

Here, the minimum size of the icon pattern is preferably a size that can be recognized when the camera is photographed close to the icon, and the maximum size is a size in a state where the allowable distance from the icon to the camera is given and the resolution of the camera is determined. It is preferred to be prescribed.

Therefore, the size of this icon pattern depends largely on the resolution of the camera.

The case where the icon pattern is invisibly inserted into various printed matters or moving images displayed on a monitor or a television will be described.

In general, various methods may be used to express specific information invisibly. Among them, a water marking method illustrated in FIG. 11 will be described.

First, the image (I) to be displayed and the icon pattern (P) is to be mixed, if inserted into the print media, such as, although not visible to the human eye, such icon pattern is concealed and represented.

This watermarking method is also used when concealed in moving pictures (I) or still images displayed on a monitor or television.

Therefore, only the image data is displayed when the image in which the image I and the icon pattern P are combined is shown to the human.

Therefore, in order to see or recognize the icon pattern thereof, filtering must be performed to lead to the visible region.

Accordingly, the camera is preferably equipped with a filter for capturing this invisible data.

An operation and a process of recognizing an icon pattern formed in this manner and inserted into a printing medium or a moving picture according to the present invention, extracting specific information from the icon pattern, and obtaining detailed information thereof will be described in detail.

First, a user reads an icon pattern displayed as an image on a print medium or a screen by using a mobile communication terminal (such as an IMT 2000 terminal) equipped with a camera owned by the user. In this case, it can be immediately read. However, in case of an icon pattern expressed invisibly by water marking, a filter for drawing it into the visible region should be used for the lens.

In this case, when the icon pattern is read at night or too close to a print medium, the light amount sensing unit 220 recognizes the amount of light and provides the light amount to the control unit 190 so that the lighting driving unit 240 is controlled by the control unit 190. Controlled to properly illuminate 230 on / off.

Therefore, the correct icon pattern can be read.

Therefore, when the icon pattern read command is applied from the user, the camera is driven and the analog icon pattern photographed from the imaging unit 250 is applied to the analog processing unit 260 to be latched and double sampled, and the gain flare, the shading correction, Analog image processing such as potential gamma correction is performed (ST100, ST110, ST120).

The analog-processed icon pattern image is provided to the A / D converter 270 and converted into a digital signal, and the digital image of the icon pattern read by the image capture unit 290 by the memory controller 300 is stored one frame. (ST130, ST140).

That is, when a user applies a key command for acquiring an image of an icon pattern through the key input unit 210, the controller 190 may include the image capturer 250, the analog processor 260, the A / D converter 270, and the like. The image processor 310, the memory controller 300, and the image capture unit 290 are collectively controlled.

Accordingly, the icon pattern image of one frame stored in the image capturing unit 290 is applied to the image processing unit 310 to perform normal image processing (ST150).

The icon pattern is provided to the pattern recognition unit 320 to perform a preprocessing process to obtain an accurate code value from the icon pattern.

This will be described in detail with reference to FIGS. 2, 5, and 12.

When the icon pattern is input, the scanning unit 321 receives this and performs scanning by a filter provided from the filter unit 324, which is 4 * 4 as shown in FIG. It becomes a lattice structure of and contains information (+,-) for calculating the correlation.

In addition, the filter unit 324 has a cell structure of 4 * 4, and has a plurality of filters having different cell sizes as shown in Fig. 12B.

Of course, not only a filter having 4 * 4, that is, N * N, but also a filter having a size of N * M.

Therefore, the scanning unit 321 first scans the input icon pattern using a filter having the largest cell size, and the correlation calculator 322 receives a scanning result value, that is, a correlation value, and receives a reference value. (ref) and compare it (ST171, ST172. ST173, ST174)

In other words, even if the size of the icon pattern varies, information is recorded according to a predetermined rule, so that the regular pattern can be recognized by scanning with a filter.

Therefore, when the correlation between the filter and the icon pattern is greater than or equal to the reference value ref, the code value extraction unit 330 extracts information recorded in a portion other than the information (+,-) for calculating the correlation. do.

At this time, the code value of the icon pattern in the filter area is extracted.

On the other hand, if the correlation is less than the reference value (ref), the filter selector 323 repeats the above operation process by selecting a filter having a smaller cell size from the filter unit 324 and providing it to the scanning unit 321. (ST160, ST170).

The controller 190 receives the code value provided from the code extractor 330 and then determines whether to request the connection of the communication network (assuming the Internet network) through the key input unit 210 from the user (ST180). .

If you want to connect to the Internet network to read the website address on the Internet from the memory 200 and access the Internet through a series of components, such as frequency synthesizer 130-data transmitter 110-duplexer 100, The information corresponding to the code is automatically searched and provided to the controller 190 through the duplexer 100-the data receiver 120-the frequency synthesizer 130.

The controller 190 thus displays the downloaded data in the form of video and audio using the liquid crystal display 140 or / and the audio unit 160.

Of course, the downloaded data may be stored in the memory 200 or maintained in the communication connection state according to a user's intention (ST190 and ST200).

On the other hand, if the user wants to read only the code corresponding data stored in advance in the memory 200 without accessing the Internet network, the controller 190 immediately returns the data corresponding to the code to the liquid crystal display 140 or / and the audio unit 160. Display through the speaker 180 through (ST210, ST220).

Thereafter, if the user requests termination, all processes are terminated. Otherwise, the process continues from ST180.

Therefore, if the user performs only the photographing operation of the icon pattern desired to receive the information through this series of processes, various information can be provided from the Internet, so that the user can easily use the movie reservation, the e-commerce, and the like.

That is, in the case of a movie, various movie information can be downloaded by the icon pattern inserted into the movie poster visually or invisibly. In the case of e-commerce, if the item photo or video has an invisible icon pattern, the product information can be easily photographed. You can download it.

It is also possible to provide various link information on the Internet.

As another embodiment of the present invention, various information of the electronic device is provided by the icon pattern inserted into the electronic device visually or invisibly, and operations for controlling the same are described in detail with reference to FIGS. 1 and 3. do.

Device control apparatus using a mobile communication terminal of the present invention,

A mobile communication terminal provided with a camera and capable of video communication,

An image capture unit for capturing and storing an image of the frame when the icon pattern given a code value included in the control object is photographed through the image capture unit;

A pattern recognition unit receiving a pattern of the icon image captured by the image capturing unit, calculating a correlation degree based on a reference pattern, and outputting a result;

A code extracting unit extracting a code value from an icon pattern according to an output result of the pattern recognizing unit;

The control unit outputs the extracted code value and transmission position data stored in the memory through a communication network, displays the control panel data downloaded through the communication network on the screen, and sends it back to the communication network if a user selects a control command. Characterized in that configured to include.

On the other hand, the device control method using the mobile communication terminal of the present invention,

A first process of driving a camera to acquire an image of an icon pattern given a code value and converting the image into a digital signal when a camera driving request is generated from a user;

A second step of extracting a specific code from the icon pattern converted into a digital signal;

A third step of downloading and displaying a control panel corresponding to the code from the communication network when a network connection request is generated from the user after the specific code is extracted;

A fourth step of, if a control command is selected from a user, sends the control command back to the communication network, and the sent control command is provided to a home host computer and provided to a control target;

When a network connection request does not occur from a user, the control command corresponding to the code is read from the memory and displayed, and when the control command is selected from the user, the process is directly performed to the control target.

Explain this.

When the icon pattern read command inserted into the control object is visually or invisibly inserted from the user, the camera is driven to perform analog image processing on the analog icon 260 in the analog form photographed from the imaging unit 250 ( ST300, ST310, ST320).

For example, when the control target is a refrigerator, an icon pattern is formed on the front door, and in the case of a television, an icon pattern appears invisibly on the screen.

The analog-processed icon pattern image is provided to the A / D converter 270 and converted into a digital signal, and the digital image of the icon pattern read by the image capture unit 290 by the memory controller 300 is stored one frame. (ST330, S340).

Accordingly, the icon pattern image of one frame stored in the image capturing unit 290 is applied to the image processing unit 310 to perform normal image processing (ST350).

The icon pattern is provided to the pattern recognition unit 320 to perform a preprocessing process to obtain an accurate code value from the icon pattern (ST360).

Since the process has been described in an embodiment of the present invention, description thereof is omitted.

After the pattern recognition process is performed, the extracted code is provided to the controller 190, and the controller 190 receives a code value provided from the code extractor 330 and then communicates with the user through the key input unit 210. It is determined whether a connection of the network (described on the assumption of the Internet network) is required (ST370, ST380).

If a connection to the Internet network is desired, the address of the manager server is read from the memory 200, and then wirelessly connected to the database 500 of the manager server as shown in FIG. 3, and the control panel corresponding to the code. Data (for example, a control command included in the remote controller) is wirelessly downloaded back to the database 500 (ST390 and ST400).

Thereafter, the data regarding the downloaded control panel is displayed through the liquid crystal display 140, and when the user sees it and selects a specific control command (for example, a TV on / off command) through the key input unit 210, the control command Is wirelessly transmitted to the manager server 500, and the manager server 500 transmits its control command to the home host computer 700 via the Internet 600.

Accordingly, the home host computer 700 applies a control command to the control target 800 so that a control operation intended by the user can be performed (ST430, ST440, ST450).

On the other hand, if the user wants to read only the control command stored in advance in the memory 200 without accessing the Internet network, the controller 190 immediately reads the control panel data corresponding to the code and displays it through the liquid crystal display 140 ( ST410, ST420).

Then, when the user sees this and selects a specific control command, the control unit 190 directly applies the control command selected from the control target through the control signal generator 150 (for example, an infrared signal or an RF signal). (ST430, ST440, ST450).

Of course, the control command data for the electronic device should be provided in advance in the memory 200.

In addition, the downloaded data may not only be a control command but also various data such as an instruction manual of the electronic device and service center information.

Accordingly, even if a remote controller for remote control of the electronic device is not provided for each electronic device, the remote controller can be integrated using the mobile communication device.

As described above, the apparatus and method for information acquisition and device control using the mobile communication terminal of the present invention have the following effects.

First, by using a mobile communication terminal equipped with a camera to obtain a pattern image recorded in a variety of media (visible or invisible) in a non-contact, and then extracted a specific code from the terminal itself according to the code By reading and displaying the information or allowing the information to be provided from the corresponding web site through the communication network, the latest information can be automatically obtained without the user having a complicated information acquisition request.

As a result, it is possible to conveniently download information for the user, and various additional effects such as advertisement effects can be expected for the information provider.

Next, an icon pattern is inserted into the electronic device visually or invisibly, and a specific code is extracted from the electronic device, and a control command is immediately sent to the electronic device for direct control or control command to a home host computer through the Internet. It is possible to send a remote control of the electronic device connected to it.

As such, the present invention can enjoy various additional effects depending on the object to which it is applied.

Claims (35)

A mobile communication terminal provided with a camera and capable of video communication, An image capture unit for capturing and storing an image thereof by one frame when an icon pattern to which a code value is assigned is photographed through the image capture unit; A pattern recognition unit receiving a pattern of the icon image captured by the image capturing unit, calculating a correlation degree based on a reference pattern, and outputting a result; A code extracting unit extracting a code value from an icon pattern according to an output result of the pattern recognizing unit; And a controller configured to output the extracted code value and transmission position data stored in a memory through a communication network and to display information corresponding to the code value downloaded through the communication network. Information acquisition device. The apparatus of claim 1, wherein the icon pattern has a structure of at least one of N * N and N * M cells. The information acquisition apparatus using a mobile communication terminal according to claim 1, wherein the icon pattern has a structure of fractal geometry. The information acquisition apparatus using a mobile communication terminal according to claim 1, wherein the icon pattern is expressed visually or invisibly. The information obtaining apparatus using a mobile communication terminal according to claim 1, wherein the icon pattern is expressed by water marking when the icon pattern is expressed invisibly. The method of claim 1, wherein the pattern recognition unit A scanning unit scanning the input icon pattern by a filter provided from the filter unit; A correlation calculation unit that calculates a correlation between the icon pattern and the filter using the scanning result of the scanning unit, and compares the value with a reference value and outputs the result to the code value extraction unit; A filter selection unit for selecting one of a plurality of filters stored in the filter unit according to a result of the selection of the correlation calculator; And a filter unit for providing the filter selected by the filter selecting unit to the scanning unit. 7. The information obtaining apparatus using a mobile communication terminal according to claim 6, wherein the filter has at least one of N * N and N * M cells. 7. The information obtaining apparatus using a mobile communication terminal according to claim 6, wherein the filter has at least one cell of N * N or N * M, and a plurality of filters having different sizes of the cells. A mobile communication terminal provided with a camera and capable of video communication, An image capture unit for capturing and storing an image of the frame when the icon pattern given a code value included in the control object is photographed through the image capture unit; A pattern recognition unit receiving a pattern of the icon image captured by the image capturing unit, calculating a correlation degree based on a reference pattern, and outputting a result; A code extracting unit extracting a code value from an icon pattern according to an output result of the pattern recognizing unit; The control unit outputs the extracted code value and transmission position data stored in the memory through a communication network, displays the control panel data downloaded through the communication network on the screen, and sends it back to the communication network if a user selects a control command. Device control apparatus using a mobile communication terminal, characterized in that configured to include. 10. The apparatus of claim 9, wherein the control command is provided to a home host computer through a communication network and provided to a control target. 10. The apparatus of claim 9, further comprising: a control unit which displays a control panel stored in a memory according to the extracted code value and outputs a control command selected by a user; And a control signal generator for wirelessly providing an output of the controller to a control target. The method of claim 9, wherein the pattern recognition unit A scanning unit scanning the input icon pattern by a filter provided from the filter unit; A correlation calculation unit that calculates a correlation between the icon pattern and the filter using the scanning result of the scanning unit, and compares the value with a reference value and outputs the result to the code value extraction unit; A filter selection unit for selecting one of a plurality of filters stored in the filter unit according to a result of the selection of the correlation calculator; And a filter unit for providing the filter selected by the filter selecting unit to the scanning unit. 10. The apparatus of claim 9, wherein the icon pattern has a structure of at least one of N * N and N * M cells. 10. The apparatus of claim 9, wherein the icon pattern has a structure of fractal geometry. The device control apparatus of claim 9, wherein the icon pattern is expressed visually or invisibly. 10. The apparatus of claim 9, wherein the icon pattern is represented by water marking when the icon pattern is invisibly represented. The method of claim 9, wherein the pattern recognition unit A scanning unit scanning the input icon pattern by a filter provided from the filter unit; A correlation calculation unit that calculates a correlation between the icon pattern and the filter using the scanning result of the scanning unit, and compares the value with a reference value and outputs the result to the code value extraction unit; A filter selection unit for selecting one of a plurality of filters stored in the filter unit according to a result of the selection of the correlation calculator; And a filter unit for providing the filter selected by the filter selecting unit to the scanning unit. 18. The apparatus of claim 17, wherein the filter has at least one of N * N and N * M cells. 18. The apparatus of claim 17, wherein the filter has at least one of N * N or N * M cells and a plurality of filters having different sizes of the cells. A first process of driving a camera to acquire an image of an icon pattern given a code value and converting the image into a digital signal when a camera driving request is generated from a user; A second step of extracting a specific code from the icon pattern converted into a digital signal; A third step of downloading data corresponding to the code from the communication network or maintaining a communication connection when a network connection request is generated from the user after the specific code is extracted; And a fourth process of reading and displaying data corresponding to the code from a memory when a network connection request has not occurred from a user. The method of claim 20, wherein the second process is A first step of scanning an icon pattern by selecting a filter having the largest size when an icon pattern is input; A second step of calculating a correlation degree according to the scanning result and comparing it with a reference value; A third step of extracting a code value of the icon pattern in the filter area if the correlation is greater than or equal to the reference value; If the correlation is less than the reference value information selection method using a mobile communication terminal, characterized in that performed in the fourth step of performing a second step from the second step after selecting a smaller filter. 21. The method of claim 20, wherein the icon pattern has a structure of at least one cell of N * N or N * M. 21. The method of claim 20, wherein the icon pattern has a structure of fractal geometry. 21. The method of claim 20, wherein the icon pattern is expressed visually or invisibly. 21. The method of claim 20, wherein the icon pattern is represented by water marking when the icon pattern is invisibly represented. 22. The method of claim 21, wherein the filter has at least one of N * N and N * M cells. 22. The method of claim 21, wherein the filter has at least one cell of N * N or N * M and has a plurality of filters having different sizes of the cells. A first process of driving a camera to acquire an image of an icon pattern given a code value and converting the image into a digital signal when a camera driving request is generated from a user; A second step of extracting a specific code from the icon pattern converted into a digital signal; A third step of downloading and displaying a control panel corresponding to the code from the communication network when a network connection request is generated from the user after the specific code is extracted; A fourth step of, if a control command is selected from a user, sends the control command back to the communication network, and the sent control command is provided to a home host computer and provided to a control target; The mobile communication is performed in a fifth process of reading and displaying a control command corresponding to the code from a memory when a network connection request does not occur from the user, and then immediately applying the control command to the control target when the control command is selected from the user. Device control method using a terminal. 29. The method of claim 28, wherein the second process is A first step of scanning an icon pattern by selecting a filter having the largest size when an icon pattern is input; A second step of calculating a correlation degree according to the scanning result and comparing it with a reference value; A third step of extracting a code value of the icon pattern in the filter area if the correlation is greater than or equal to the reference value; If the correlation is less than the reference value, the method of controlling the device using a mobile communication terminal, characterized in that the step of performing a second step from the second step after selecting a small filter. 29. The method of claim 28, wherein the icon pattern has a structure of at least one cell of N * N or N * M. 29. The method of claim 28, wherein the icon pattern has a structure of fractal geometry. 29. The method of claim 28, wherein the icon pattern is expressed visually or invisibly. 29. The method of claim 28, wherein the icon pattern is represented by water marking when the icon pattern is invisibly represented. 30. The method of claim 29, wherein the filter has at least one of N * N and N * M cells. 30. The method of claim 29, wherein the filter has at least one cell of N * N or N * M and has a plurality of filters having different sizes of the cells.