KR100815121B1 - Method for magnifying of selected area using screen division in portable communication terminal - Google Patents

Abstract

The present invention relates to a method for expanding a selection area by dividing a screen in a mobile communication terminal. The present invention relates to a method of checking whether a screen split key is input during a video call, and a predetermined number of video screens when a screen split key is input. Dividing into N) areas, and expanding and displaying the selected area when a key is selected to select one of the areas, thereby minimizing time due to zoom setting and operation and directional keys. There is an advantage that can improve the user's convenience by reducing the inconvenience caused by frequent input of the and keys.

Mobile terminal, screen division, screen magnification, display

Description

METHODS FOR MAGNIFYING OF SELECTED AREA USING SCREEN DIVISION IN PORTABLE COMMUNICATION TERMINAL}             

1 is a diagram showing the configuration of a mobile communication terminal according to the present invention;

2 is a view showing an example of the configuration of an image processor according to the present invention;

3 is a diagram illustrating a procedure for enlarging a selection area by dividing a screen during a video call in a mobile communication terminal according to an embodiment of the present invention; and

FIG. 4 is an exemplary view illustrating a method for enlarging a selection area by dividing a screen during a video call in a mobile communication terminal according to an embodiment of the present invention.

The present invention relates to screen magnification of a mobile communication terminal, and more particularly, to a method for enlarging a selection area by dividing a screen when displaying an image.

Mobile communication terminals have been rapidly spreading due to the convenience of contacting the other party regardless of time and place. Also, with the development of technology, the mobile communication terminal has been increasingly advanced to implement many multimedia functions. For example, users have been able to store images using cameras mounted in mobile communication terminals, and exchange only voice and data, and so-called IMT-2000 images. The mobile communication terminal having such a video call function allows a video call to exchange voice data and video data by capturing a face of a caller with a camera installed in the terminal body and transmitting the processed image signal to the counterpart terminal. .

With the development of such multimedia functions, various technologies have been applied to provide an advanced multimedia service. For example, the screen magnification technology applied to a mobile communication terminal, that is, the zoom technology, provides a more advanced service by satisfying a user's desire to view in greater detail by displaying a specific portion desired by the user. have.

However, the conventional screen magnification technology requires many inputs such as a direction key and a zoom key in order for a user to select a portion to be enlarged and to enlarge as much as desired. This is not a problem for small movements and magnifications, but it can be annoying for the user when it is necessary to enlarge a very small portion or require input of many movement keys. In other words, there is a problem in that the user spends a lot of time in zoom setting and operation and feels uncomfortable due to frequent key input.

 Accordingly, an object of the present invention relates to a method for enlarging a selection area by dividing a screen in a mobile communication terminal.

In order to achieve the above object, according to an embodiment of the present invention, a method for dividing a video screen in a mobile communication terminal to enlarge a selection area includes: checking whether a screen split key is input during a video call; Dividing an image screen into a predetermined number (N) of regions when a screen division key is input; and expanding and displaying the selected region when a key is selected to select one of the regions. It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, a method of dividing a screen into a plurality of areas when displaying an image in a mobile communication terminal, and an enlarged display of a selected area among the plurality of areas will be described.

1 illustrates a configuration of a mobile communication terminal according to the present invention. In the following description, the mobile communication terminal is a cellular phone, a personal communication system (PCS), a personal digital assistant (PDA), an IMT-2000 (International Mobile Telecommunication-2000) terminal, or the like. It is meant to include all, the following description will be described with a general configuration of the above examples.

Referring to FIG. 1, a controller (MPU: Micro-Processor Unit) 101 controls the overall operation of the mobile communication terminal. For example, to perform processing and control for voice communication and data communication, and to expand and select an area to divide and enlarge the screen into a plurality of areas when displaying an image, according to the present invention, in addition to the usual functions. Handle the function. Therefore, in the following description, description regarding the processing and control of the normal control unit 101 is omitted.

The memory 111 may include a program memory, a data memory, and a moving picture memory. The program memory stores microcode and various reference data of a program for processing and control of the controller 101. In particular, according to the present invention, a program for selecting and enlarging an area to be divided and enlarged when displaying an image is stored. The data memory is a working memory of the controller 101, and stores temporary data generated during execution of various programs. The data memory may include a text buffer for storing text signals input through the keypad 113, an image buffer for storing a video signal generated by the image codec 119, and an audio signal generated by the audio codec 107. It may be provided with audio buffers for storing. The moving picture memory is a memory for storing a moving picture signal.

Key pad 113 is a numeric key buttons of 0 ~ 9, menu button (menu), cancel button (clear), OK button, call button (TALK), end button (END), shooting button, It includes a plurality of function keys such as an internet access button, navigation key (or direction key) buttons (▲ / ▼ / ◀ / ▶), and provides key input data corresponding to a key pressed by the user to the controller 101. The display unit 121 displays status information generated during the operation of the mobile communication terminal, a limited number of characters, a large amount of video and still images, and the like. The display unit 121 may use a color liquid crystal display (LCD).

In addition, the RF unit 105 includes an RF transmitter for upconverting and amplifying a frequency of a transmitted signal, an RF receiver for low noise amplifying a received signal, and downconverting a frequency of the received signal. The data processor 103 includes a transmitter for modulating and encoding the transmitted signal and a receiver for demodulating and decoding the received signal. That is, the data processor 103 may be configured of a modem and a coder-decoder (CODEC). The codec includes a data codec for processing packet data and an audio codec 107 for processing an audio signal such as voice. The audio processor 109 reproduces a received audio signal output from the audio codec 107 of the data processor 103 or transmits a transmission audio signal generated from a microphone to the audio codec 107 of the data processor 103. It performs the function.

The camera unit 115 includes a camera sensor that converts an optical signal detected at the time of image capturing into an electrical signal, and a signal processor which converts an analog image signal captured by the camera sensor into digital data. The camera sensor may be implemented as a charge coupled device (CCD) sensor, and the signal processor may be implemented as a digital signal processor (DSP).

The image processor 117 generates screen data for displaying an image signal output from the camera unit 115. The image processing unit 117 processes the image signal output from the camera unit 115 in units of frames, and outputs the frame image data according to the characteristics and size of the display unit 121. In addition, the image processing unit 117 includes an image codec 119, and the image codec 119 performs a function of coding an image signal in a set manner or decoding the coded frame image data into original frame image data. do. The image processor 117 generates and plays a video signal according to a mode set under the control of the controller 101.

2 is a diagram illustrating an example of a configuration of an image processor 117 according to the present invention.

The image processing unit 117 interfaces an image signal between the camera unit 115 and the display unit 121, and includes an image codec 119 to code and decode an image signal input from the camera unit 115. Perform the function. In addition, the image processor captures a selection area corresponding to a position received from the controller 101 of the coded image data, and performs a function of enlarging it.

Referring to FIG. 2, the camera interface unit 201 performs a function of interfacing image data output from the camera 115. Here, it is assumed that the image data output from the camera 115 is YUV format image data, and the display unit 121 displays image data of RGB format.

The scaler 203 scales the image signal captured by the camera 115 on the display unit 121 according to the control signal output from the controller 101. That is, the scaler 203 reduces and crops the image signal pixels output from the camera 115 to the number of pixels of the image signal that can be displayed on the display 121.

The color converter 205 converts the YUV data output from the scaler 203 into RGB and outputs the converted RGB. In this case, when the image data captured by the camera 115 is generated in the RGB format or when the display unit 121 can display the image data in the YUV format, the configuration of the color converter 205 may be omitted. have.

In addition, the LCD interface 207 functions to interface image data to the display unit 121. That is, the LCD interface 207 may have a buffer therein to buffer the image data interfaced with the display 121 in the LCD interface 207.

The image codec 119 performs image coding or restoring the coded image data under the control of the controller 101. The image codec 119 inputs and codes a camera image signal output from the color conversion unit 205 or an image signal displayed on the display unit 121 under the control of the controller 101, and also codes the image. The signal is decoded and output to the scaler 203 or the LCD interface 207. The screen enlarger 209 enlarges an image coded and decoded through the image codec 119 under the control of the controller 101.

The control interface 211 performs an interface function between the image processor 117 and the controller 101 and also performs an interface function between the display 121 and the controller 101.

Referring to FIG. 2, an operation of enlarging a partial region of the image data acquired by the camera 115 and transmitting the image area to the display unit 121 is performed. The image codec 119 outputs the image output from the camera 115. Data is coded under the control of the controller 101 and transmitted to the screen enlarger 209. The screen enlarger 209 receives the position of the selection area selected by the user's key operation from the controller 101 together with the coded image data. Thereafter, the screen magnifier 209 captures and enlarges the selected area informed by the controller 101, sends it to the LCD interface 207, and outputs the same to the LCD 121.

3 illustrates a procedure for enlarging a selection area by dividing a screen during a video call in a mobile communication terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 3, first, the controller 101 receives a phone number and a video call key of the other party by a user and attempts to connect to a video call in step 301. When the video call is connected, the controller 101 proceeds to step 303 to display the image on the mobile communication terminal to realize the video call. At this time, a random integer is stored in N for initial division. In FIG. 3, 2 is stored in N so that a division of 2 × 2 is performed immediately when a key for division is input during a video call. Here, any constant for the initial division can be changed by setting in the user.

In a video call, the controller 101 checks whether a screen division key for screen expansion is input in step 305. By inputting this key, the user can see a larger area of interest by dividing and enlarging a specific position of an image transmitted from the other party, so the split key has the meaning of an enlarged key. If there is no input of the screen division key, the controller 101 proceeds to step 327 and continues to hold the video call until the video call ends. If the screen division key is input, the controller 101 proceeds to step 307 to perform N × N initial region division. In FIG. 3, 2 is stored in N so that a division of 2 × 2 is performed when the division key is input once. However, a larger value is set in N if a screen division key is desired to split the screen into smaller areas. You can also save it. Here, 2 × 2 means two equal parts horizontally and two equal parts vertically, thereby being divided into four regions of the same size.

If the partition is divided, the controller 101 proceeds to step 309 and displays an edge for distinguishing the active area. That is, the selection area is displayed with a border to distinguish the selection area. Referring to the exemplary diagram of FIG. 4, when a partition key is input at 401, an area is divided as shown in 403. At this time, if the border for distinguishing the activation area is set to be in the middle of the divided area, in the case of 403, the upper left of the four areas, that is, the area 405 is displayed as the activation area.

In step 311, the controller 101 determines whether there is more input of the screen division key. If there is an additional input of the screen division key, the controller 101 proceeds to step 313 to update N to N + 1, and returns to step 307 to divide the N × N area. That is, the N value is updated according to the number of inputs of the partition key to divide the N × N area. Referring to FIG. 4, when the partition key is input twice, the partition is divided into 3x3 blocks as shown in 407 and the border for the active area is located in the area 411.

Here, although steps 305 to 313 may be performed to divide the N × N region, numeric keys may be used. In step 305, when the key for division is received, the controller 101 checks the input of the numeric key for N × N area division. If there is an input of the numeric key, the controller 101 may divide the N × N area and display an edge for dividing the active area to replace steps 305 to 313. In other words, if you press the numeric key 3 while pressing the partition key once, 3 × 3 area division is possible.

If there is no additional input of the partition key, the controller 101 proceeds to step 315 to check whether there is an input of a direction key. If there is no input of the direction key, the controller 101 determines that the user does not want to move the activation area and proceeds directly to step 319 to check whether there is an input of a selection key. If there is an input of the up / down / left / right arrow keys, the controller 101 proceeds to step 317 to move the active area border in the corresponding direction, and proceeds to step 319 to check whether there is an input of a selection key. do.

If there is no input of the selection key, the control unit 101 returns to step 315 to check whether there is an input of the direction key again, and if there is an input of the selection key, the controller 101 proceeds to step 321 and displays the selected area on the screen. do. Referring to FIG. 2, when the controller 101 notifies the screen magnifier 209 of the location of the selection area by the user's key manipulation, the screen magnifier 209 selects the selected area indicated by the controller 101. Capture and enlarge the image, send it to the LCD interface 207, and output it to the LCD 121. Referring to FIG. 4, 409 including the active area border 411 is enlarged and displayed on the screen as shown in 415 and 413. Here, a method of dividing and enlarging the portion once enlarged and displayed again by using a split key, that is, an enlarged key, is possible.

Thereafter, the controller 101 proceeds to step 323 to check whether there is an input of a key (eg, a cancel key) for displaying the original image before enlargement. If there is an input of a key for displaying the original image before the enlargement, the controller 101 proceeds to step 325 to display the original image before the enlargement on the screen, and proceeds to step 327 to perform the image by the user's key operation. Check the end of the call. If there is no video call end command, the controller 101 returns to step 305 to continue holding the video call, and when the video call end command is checked, the controller 101 ends the algorithm according to the present invention.

The embodiment of the present invention has been described for a method of enlarging and viewing a specific area of an image received during a video call in a video call mobile communication terminal. Here, if a higher definition of the selection area to be enlarged is desired, the user may select and transmit a region for requesting enlargement transmission to the transmitting terminal, and then request to enlarge and transmit only the selection region. Then, the transmitting terminal enlarges only the selected selection area and sends it to the receiving terminal, and the receiving terminal outputs the enlarged image on the screen.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described. However, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention divides the screen in order to enlarge and display a specific area of an image in the mobile communication terminal, thereby minimizing the time according to the zoom setting and operation, and the user's inconvenience caused by frequent input of the direction key and the enlarged key. There is an advantage to reduce. That is, there is an advantage that can reduce the inconvenience and time consumption due to frequent key operation and provide a better service to the user.

Claims (5)

A method for dividing a video screen during a video call in a mobile communication terminal to enlarge a selection area, In the video call, the process of checking whether the screen division key is input, Dividing the video screen into a predetermined number (N) of regions when the screen split key is input; And enlarging and displaying the selected area when a key is selected to select one of the areas. The method of claim 1, And updating the number N according to the number of inputs of the screen division key. A method for dividing a video screen during a video call in a mobile communication terminal to enlarge a selection area, In the video call, the process of checking whether the screen division key is input, When inputting the screen division key, checking the input of the numeric key, When the numeric key is input, dividing the video screen into the number (N) areas; And enlarging and displaying the selected area when a key is selected to select one of the areas. delete delete

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