KR20050013362A - Method and apparatus for controlling a pointer on a display of a mobile communication terminal - Google Patents

Abstract

PURPOSE: A pointer control device and a method using displacement and an inclination of a mobile communication terminal are provided to quickly and exactly operate a pointer on a terminal screen with a simple operation of moving a terminal, while controlling the pointer by moving the terminal, thereby performing a desired operation without tapping a touch screen with a pen or frequently pressing a terminal button. CONSTITUTION: A motion sensor(331) senses the displacement or an inclination of a mobile communication terminal. A filter(333) filters an output signal of the motion sensor(331). An amplifier(335) amplifies the filtered signal so as to be a signal having a predetermined amplitude. A modulator(337) modulates the amplified signal into a predetermined signal type. An A/D converter(339) converts the modulated analog signal into a digital signal. A position operator(341) calculates a mobile position value of a pointer displayed on a terminal screen by using the converted signal. A pointer controller(323) controls the pointer by using the mobile position value.

Description

Method and apparatus for controlling a pointer on a display of a mobile communication terminal}

The present invention relates to a pointer control apparatus and method for controlling a pointer mounted on a mobile communication terminal and displayed on a screen of the mobile communication terminal.

At present, with the development of wireless data communication technology, the function of the mobile communication terminal is also continuously improved. In particular, as data communication is enabled in the mobile communication terminal such as wireless internet, e-mail and internet search using the mobile communication terminal are greatly expanded among users. Among these environments, recently, a mobile communication terminal having a user interface such as a mouse pointer using a trackball mainly used in a desktop computer, a mobile device whose screen changes according to the tilt of the device, and a small scroll scrolling the screen according to the tilt of the device An information processing apparatus has been proposed in Korean Unexamined Patent Publication No. 2001, No. 91856 (October 23, 2001), Korean Utility Model Registration No. 266509 (2002.2.28), and Korean Patent Publication No. 245282 (February 15, 2000). Hereinafter, a conventional mobile communication device proposed above will be described.

1 is a perspective view showing a mobile phone having a menu search apparatus using a conventional trackball. Referring to FIG. 1, the cellular phone 100 is a clamshell cellular phone and includes a track ball 114 mounted to be partially exposed to the upper surface 116 of the main body 102 of the cellular phone 100. In addition, the mobile phone 100 is mounted on the bottom inner surface of the display unit 106 of the folder 104 so that the trackball 114 is seated when the folder 104 contacts the upper surface 116 of the main body 102 of the mobile phone 100. And a trackball groove 112 formed at a position corresponding to the trackball 114.

The mobile phone 100 also includes a menu displayed on the display unit 106 as a plurality of icons 108. The menu is presented to the user as a user interface. In addition, the mobile phone 100 provides a user interface for allowing the user to manipulate the pointer 110 using the trackball 114 to select a menu, and to select a desired menu. This user interface allows the user to navigate the menu of the mobile phone more quickly and easily.

2 is a block diagram illustrating a portable device in which a screen is changed according to a conventional tilt. Referring to FIG. 2, the portable device 200 is a mobile phone, which modulates and codes / decodes / decodes a baseband signal from or to a radio signal unit for performing radio communication with a base station. To amplify and filter the audio signal from the baseband processor 230 and the baseband processor 230 to output to a speaker or earphone, or to amplify and filter a signal from the microphone to the baseband processor 230. An audio unit 240, an input unit 270 such as a keypad for allowing a user to input a phone number or a function selection, a display unit 280 such as an LCD for showing the state or various information of the mobile device to the user, these Control unit 210 for controlling the control unit, ROM (Read Only Memory), RAM (Random Access Access), RAM for storing programs and data necessary for the operation of the control unit, etc. Memory 260, such as the city memory, and the tilt detection unit 250 for detecting the tilt of the portable device.

The tilt detector 250 detects left and right tilts and / or tilts of the mobile device and transmits the detected signal to the controller 110. In addition, the tilt detection unit 250 is a vibratory gyroscope device (Vibratory gyroscope device), a geomagnetic sensor (Geomagnetic sensor) and the like are used. The controller 210 updates the screen by calculating the content of the screen displayed on the display unit 280 according to the signal from the tilt detector 250. The mobile device allows the user to view a screen displayed in a certain direction regardless of the tilt of the mobile device. For example, the tilt of the mobile device may be used as an input signal to control the movement of a specific element in the game.

In addition, the small information processing device disclosed in Korean Patent No. 245282 is configured to scroll the screen of the device up and down according to its inclination when the device is rotated in the forward direction or the opposite direction when the device is viewed from the front. It is composed. This configuration allows the user to easily scroll through a screen that is not displayed on the display of the device.

However, in the conventional portable device, the mobile phone equipped with the conventional trackball described above is not suitable for the small mobile phone because the trackball device has a predetermined size. In addition, in the case of a mobile device whose screen changes according to the tilt of the device, the screen is tilted and displayed only according to the tilt of the mobile device, and, for example, in the case of a game, the device tilts only for a specific element in the game. It allows certain elements to move in the device's tilt direction with respect to the background screen. Further, in the small information processing apparatus, the screen is scrolled in the vertical direction only according to the tilt of the apparatus.

As described above, the mobile communication terminal of the conventional mobile phone, portable device, small information processing device and the like is still not easy due to the limitation of the screen size. For example, when a user uses a mobile communication terminal or a personal information terminal, it is inconvenient to use both hands. In addition, although not specifically mentioned, currently used personal digital assistants (PDAs) use a touch screen to move the pointer and use the pointer to select a menu. However, the PDA also has the inconvenience of using both hands when using the PDA, such as the restrictions of the above-mentioned mobile communication terminal.

In particular, mobile communication terminals such as mobile phones, which have become more convenient to carry with miniaturization and high functionality, still have to move the menu bar through up, down, left, and right direction buttons and select a desired menu by the limitation of the size or user interface. For example, when using data communication such as wireless Internet, the conventional mobile communication terminal is very inconvenient for browsing for data communication because the user has to repeatedly select a menu by operating a button several times. There are disadvantages. In addition, it has become a limitation in providing a service which requires a speed feeling like an action game to a mobile communication terminal. Therefore, if the mobile communication terminal is provided with a more convenient user interface, a great response can be obtained from the user.

The present invention was derived to achieve the above object, and an object of the present invention is to improve the existing poor user interface of the mobile communication terminal to provide a more convenient user interface.

Another object of the present invention is to provide a pointer control device for controlling a pointer displayed on a screen of a mobile communication terminal by using a displacement or tilt of the mobile communication terminal itself.

Still another object of the present invention is to provide a pointer control method for controlling a pointer displayed on a screen of a mobile communication terminal by using a displacement or tilt of the mobile communication terminal itself.

Still another object of the present invention is to provide a mobile communication terminal including a pointer control device for controlling a pointer displayed on a screen of the mobile communication terminal by using a displacement or tilt of the mobile communication terminal itself.

1 is a perspective view showing a mobile phone having a menu search apparatus using a conventional trackball.

2 is a block diagram illustrating a portable device in which a screen is changed according to a conventional tilt.

3 is a block diagram schematically showing the configuration of a mobile communication terminal equipped with a pointer control device according to an embodiment of the present invention.

Figure 4 is a block diagram schematically showing a pointer control device according to an embodiment of the present invention.

5 is a view for explaining the principle of operation of the motion estimation sensor according to an embodiment of the present invention.

6 is a flowchart illustrating a pointer control method according to an exemplary embodiment of the present invention.

7 is a flowchart illustrating a pointer control method according to another exemplary embodiment of the present invention.

8A and 8B illustrate a method of controlling a pointer using a mobile communication terminal equipped with a pointer control device according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

300: mobile communication terminal 301: antenna

303: high frequency processing unit 315: baseband processing unit

317: modem chip 319: peripheral device

321: Pointer User Interface 323: Pointer Controller

330: pointer control device 331: motion detection sensor

333: filter unit 335: amplification unit

337: Modulator 339: A / D Converter

341: position calculating unit 343: correction value calculating unit

In order to achieve the above object, according to an aspect of the present invention, in the mobile communication terminal including an antenna, a high frequency processing unit and a baseband processing unit pointer control device coupled to the pointer controller of the baseband processing unit, the mobile communication Motion detection sensor for detecting the displacement and tilt of the terminal, Filter unit for filtering the output signal of the motion detection sensor, Amplifying unit for amplifying the filtered signal to a predetermined size, a predetermined signal to the amplified signal Movement of a pointer displayed on a screen of the mobile communication terminal by using a modulator for transforming a shape, an A / D converter for converting the transformed analog signal into a digital signal, and a signal converted by the A / D converter Including a position calculation unit for calculating a position value, the pointer controller using the moving position value It is possible to provide a pointer controlling apparatus in a mobile communication terminal, characterized in that for controlling the group pointer.

In a preferred embodiment, the motion detection sensor measures the movement distance and the speed in one of the radial direction with respect to the horizontal direction orthogonal to the gravity direction and the gravity direction passing through the pointer of the pointer at the current position of the pointer. It characterized in that for detecting the displacement by using.

The motion sensor may use the rotation direction and the rotation speed of the mobile communication terminal based on a gravity direction passing through the pointer of the pointer at the current position of the pointer and a horizontal plane perpendicular to the gravity direction and passing through the pointer. It characterized in that for detecting the tilt.

In addition, the pointer control device is different from the other pixels based on a horizontal line that is orthogonal to the gravity direction and passes the indication point if the plane constituting the screen of the mobile communication terminal is not orthogonal to the direction of gravity passing through the indication point of the pointer. And a correction value calculator for calculating a correction value in proportion to the distance from the reference pixel with respect to the pixel, and transferring the correction value to the position calculating unit.

The position calculating unit may further include a movement direction and a moving distance of the pointer, or an X coordinate and a Y coordinate of the screen based on a signal obtained from the A / D converter and a correction value obtained from the correction value calculator. The moving position value is calculated.

The baseband processor may include a peripheral device having a pointer controller for controlling the pointer and a pointer user interface for setting or releasing a function of using the pointer.

The user interface may include a switch button for setting or releasing the function of the pointer in a toggle manner.

The user interface may include a menu item included in a menu in the mobile communication terminal to set or release a function of the pointer.

According to another aspect of the present invention, a pointer control device coupled to a pointer controller of the baseband processor in a mobile communication terminal including an antenna, a high frequency processor, and a baseband processor controls a pointer displayed on a screen of the mobile communication terminal. A method, comprising: detecting a displacement and a tilt of a mobile communication terminal in a motion detection sensor, transforming the detected signal into a predetermined signal form, and converting the modified analog signal from an A / D converter to a digital signal And calculating a moving position value of a pointer displayed on a screen of the mobile communication terminal by a position calculating unit using the signal converted by the A / D converting unit, wherein the pointer controller is configured to move the moving position. A mobile communication stage, characterized in that for controlling the pointer using a value. It may provide a pointer control method in.

In a preferred embodiment, the pointer control method is orthogonal to the direction of gravity and the indication point, if the plane of the screen of the mobile communication terminal is not parallel to the horizontal direction orthogonal to the direction of gravity passing through the pointer of the pointer. And calculating the correction value in proportion to the distance from the reference pixel with respect to the other pixels on the horizontal line passing through the horizontal line, and transmitting the correction value to the position calculating unit.

The transforming of the detected signal into a predetermined signal form may include: filtering at least one output signal of the motion detection sensor by a filter unit, amplifying the filtered signal to a predetermined size by an amplifier; And modifying the amplified signal in a modulator.

According to still another aspect of the present invention, it is possible to provide a mobile communication terminal comprising the pointer control device according to any one of claims 1 to 9.

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram schematically illustrating a configuration of a mobile communication terminal equipped with a pointer control device according to an embodiment of the present invention.

Referring to FIG. 3, the mobile communication terminal 300 according to the present invention includes an antenna 301, a high frequency processor 303, and a baseband processor 315. The high frequency processor 303 is coupled to the antenna 301, and a duplexer 305 for separating transmission and reception frequencies, a receiver Rx 307, a transmitter Tx 309, and an intermediate frequency unit IF 311 and 313. It includes. The intermediate frequency is used to lower the 1.7 to 1.8 GHz band used by the mobile communication terminal to the base band in two stages. For example, the intermediate frequency includes about 100 MHz as the first intermediate frequency band and about 5 MHz as the second intermediate frequency band.

The baseband processor 315 includes a mobile station modem 317. The modem chip 317 refers to a core component of a terminal in which a baseband processor is embedded. The modem chip 317 is coupled to the intermediate frequency units 311 and 313 of the high frequency processor 303 and performs digital signal processing and call processing ( Call processing The baseband processor 315 also includes a peripheral device 319. The peripheral device 319 includes an input / output device having a storage means such as a memory and a user interface. In particular, the peripheral device 319 is a pointer user interface (pointer UI) 321 for selecting to use a pointer displayed on a screen display unit or a screen of a mobile communication terminal and a pointer for controlling the pointer according to a control command of a baseband processor. It includes a controller 323. The pointer user interface 319 includes a switch button that operates in a toggle manner to set or release a pointer function. In addition, the user interface 319 includes a menu item included in a menu in the mobile communication terminal to set or release a function of the pointer.

The baseband processor 315 also includes a pointer control device 330 coupled to the baseband processor and the peripheral device and generating a position movement value for controlling the pointer using the displacement and the tilt of the mobile communication terminal itself. Such a pointer control device will be described below.

4 is a block diagram illustrating a pointer control device according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the pointer control device 330 includes a motion detection sensor 331, a filter unit 333 coupled to the motion detection sensor 331, an amplifier 335 coupled to the filter unit 333, and amplification. PWM / PCM modulator 337 coupled to unit 335, A / D converter 339 coupled to modulator 337, and position calculator 341 coupled to A / D converter 339. Include. In addition, the pointer control device 330 includes a motion monitoring sensor 331 and a correction value calculator 343 coupled to the position calculator, respectively.

The motion detection sensor 331 includes means for detecting and estimating motion, such as an accelerometer, gyroscope, motion estimator, and the like. The motion monitoring sensor 331 detects displacement caused by the movement of the mobile communication terminal. Herein, the displacement caused by the movement of the mobile communication terminal is either a direction of gravity passing through an indication point of a pointer displayed on the screen of the mobile communication terminal at a current position of the mobile communication terminal and a radial direction with respect to a horizontal direction perpendicular to the direction of gravity. The displacement formed by the travel distance and the travel speed.

In addition, the motion detection sensor 331 detects the inclination by the self-rotation of the mobile communication terminal. Here, the inclination due to the self-rotation of the mobile communication terminal is based on the direction of gravity passing through the indication point of the pointer displayed on the screen of the mobile communication terminal and the horizontal line on the screen orthogonal to the direction of gravity in the current state of the mobile communication terminal. The slope formed by the rotational direction and the rotational speed of the. Meanwhile, in selecting a reference point for the displacement or inclination, for example, the reference point of the pointer is not set as the reference point, and for example, a screen center point or a specific position of the mobile communication terminal or a specific position on the screen is selected as a reference point. It is available.

In addition, when the motion detection sensor 331 is a gyroscope, the motion detection sensor 331 detects the displacement and the tilt of the mobile communication terminal by vibration and the Coriolis effect as shown in FIG. 5A. In addition, the motion sensor 331 is in contact with each part of the motion sensor 331 in order to output a different signal for the displacement and tilt of the mobile communication terminal to receive a physical force as an electrical or magnetic signal It includes the contact point. This configuration is obvious to those skilled in the art to which the present technology belongs, so detailed description thereof will be omitted.

The filter unit 333 filters the signal output from the motion detection sensor 331. That is, the filter unit 333 removes unnecessary signals from the output signals of the motion detection sensor 331 and passes only signals of a required band to the amplifier 335. The amplifier 335 amplifies the signal received from the filter unit 333 to a predetermined size so that it can be used as a control signal. The PWM / PCM modulator 337, which has received the amplified signal from the amplifier 335, modulates the signal in a predetermined signal form so that it can be used as a pointer control signal. For example, the modulator 337 may pulse width modulate or pulse code modulate the amplified signal.

The A / D converter 339 receiving the modulated signal from the modulator 337 converts the received analog signal into a digital signal and transmits the converted analog signal to the position calculator 341. The position calculator 341 calculates a movement position to which the pointer moves at the position of the current pointer using the received digital signal, and then transmits the calculated movement position value to the baseband processor 317. In addition, the position calculating unit 341 is based on the signal obtained from the A / D conversion unit 339 and the correction value obtained from the correction value calculating unit 343 described in detail below, or the mobile communication terminal. The value of the movement position of the pointer with respect to the X coordinate and the Y coordinate on the screen is calculated.

Also, if the plane constituting the screen of the mobile communication terminal is not orthogonal to the gravity direction, the correction value calculator 343 of the pointer control device 330 is on a horizontal line orthogonal to the gravity direction passing through the indication point of the pointer displayed on the screen. A correction value for correcting the moving position of the pointer with respect to the other pixels based on the pixel is calculated according to the distance to the reference pixel. For example, the correction value calculation unit adds a predetermined correction value to the next pixel which contacts this pixel, without applying the correction value to the pixel adjacent to the pixel on the horizontal line. Then, a predetermined correction value is further added to the pixel. This is to properly correct the moving position value calculated by the position calculating unit in the horizontal direction perpendicular to the gravity direction according to the inclination of the screen. An example of the correction value for each of these pixels is shown in FIG. 5B.

5B illustrates a plurality of pixels forming a screen 501 of a mobile communication terminal according to the present invention. The screen 501 illustrated in FIG. 5B includes eight pixels each in width and length. In addition, it is assumed in FIG. 5B that the pointer is placed at an arbitrary position on the horizontal line A-A.

Referring to FIG. 5B, the arrow directions A-A represent a straight line or a horizontal line perpendicular to the direction of gravity and passing through the pointer point. That is, the correction value calculator 343 according to the present invention is orthogonal to the direction of gravity passing through the indication point of the pointer displayed on the screen when the screen of the mobile communication terminal is inclined at a predetermined angle in the direction B of FIG. 5B. A pixel at a distance from a pixel adjacent to the reference pixel is incrementally increased with respect to the pixel on the horizontal line AA passing through the reference value. In FIG. 5B, 0 to 3 indicate that a predetermined value is set such that a predetermined value is added to the calculated value of the position calculating unit 341, respectively.

6 is a flowchart illustrating a pointer control method according to an exemplary embodiment of the present invention.

Referring to Fig. 6, the pointer control method starts with setting a pointer function in a mobile communication terminal (step 601). When the pointer function is set to operate in the mobile communication terminal, the motion detection sensor detects the displacement and the tilt of the mobile communication terminal (step 603). In this case, the detected signals are output as different signals representing different displacements and inclinations at the contacts bonded to the respective parts of the motion detection sensor (step 605).

The motion detection signal output from the motion monitoring sensor is filtered by the filter unit (step 607). Filtering is to remove unnecessary signals from the received signals. Thereafter, the filtered motion detection signal is amplified to a predetermined magnitude by the amplifier (step 609). The PWM / PCM modulator then modulates the signal in a predetermined signal form (step 611). The motion detection signal is converted from the analog signal to the digital signal by the A / D converter (step 613).

The position calculator, which has received the motion detection signal from the A / D converter, calculates a moving position value of the pointer by a position operation that calculates a changed position to which the pointer moves from the previous position of the pointer using the motion detection signal (step 615). . Thereafter, the position calculating unit transmits the movement position values Δx and Δy of the pointers to the baseband processor (step 617). Through this process, the mobile terminal user can more easily control the mobile terminal or select a specific menu on the screen. In addition, various functions may be implemented in a game or a network game using a mobile communication terminal.

7 is a flowchart illustrating a pointer control method according to another exemplary embodiment of the present invention.

Referring to FIG. 7, in the pointer control method according to another embodiment of the present invention, in the pointer control method described with reference to FIG. 6, when the plane constituting the screen of the mobile communication terminal is not orthogonal to the direction of gravity, gravity passes through the pointer point. And calculating a correction value in proportion to the distance from the pixel with respect to the other pixels based on the pixel on the horizontal line perpendicular to the direction. Specifically, when the pointer function is set to operate in the mobile communication terminal, and the motion detection sensor detects the displacement and the tilt of the mobile communication terminal (step 603), the detected signal is detected at a contact point bonded to each part of the motion detection sensor. Different signals representing different displacements and inclinations are transmitted to the correction value calculator (step 621).

Thereafter, the correction value calculating unit sets a horizontal line perpendicular to the direction of gravity and passing the pointer line as a reference line based on the tilt direction of the screen and the information on the tilt in the received detection signal, and references the plurality of pixels on the horizontal line as a reference line. Determination is made of pixels (step 623). The correction value is calculated with respect to the other pixels centered on the reference pixel according to the distance to the reference pixel (step 625). The correction value is calculated to have a larger correction value in proportion to the distance away from the reference pixel (see FIG. 5B). The calculated correction value is transmitted to the position calculating unit and used as position calculation data for more precise position calculation of the pointer together with the motion detection signal.

As described above, in the present invention, the position value of the pointer displayed on the screen is changed in accordance with the change of the displacement or the inclination of the mobile communication terminal. On the other hand, the present invention may simply convert the displacement or inclination change of the mobile communication terminal to its position value linearly or linearly, but may utilize various functions to enable more various interfaces. For example, suppose that the present invention described above is applied to a game. When playing a shooting game or a racing game, that is, manipulating a mobile communication terminal to control an object in a display, the inertia must be expressed to increase the realism of the game. In other words, when the sensitivity of the position change displayed on the screen according to the displacement or the tilt change of the mobile communication terminal constantly changes, the actual feeling of inertia cannot be expressed. Therefore, in the present invention, even when the mobile communication terminal is displaced or tilted at the same speed, the pointer may move with low sensitivity at the beginning of movement and later with high sensitivity (slow movement and rapid movement). To this end, in the present invention, a higher-order transform function may be applied instead of a linear function.

As another example, it is assumed that the present invention described above is applied to browsing. Pointers used for normal browsing can also feel more familiar and comfortable to users by applying the same inertia technique as in the above game. More specifically, if the pointer moves too sensitively, it becomes difficult to move the pointer precisely to the desired target point. On the other hand, if you move too insensitively, it takes time to move, and it is accepted as frustrating. Therefore, in the present invention, by introducing an inertial technique for browsing, it is possible to move the pointer finely near the target and to move the pointer quickly at a long distance.

8A and 8B are diagrams for describing a method of controlling a pointer using a mobile communication terminal equipped with a pointer control device according to an exemplary embodiment of the present invention.

Referring to FIG. 8A, a user using a mobile communication terminal controls a pointer displayed on a screen of a mobile communication terminal by moving his mobile terminal in all directions up, down, left, and right based on a horizontal direction perpendicular to the gravity direction. do. In addition, referring to FIG. 8B, a user using the mobile communication terminal controls the pointer displayed on the screen of the mobile communication terminal by tilting the mobile communication terminal carried by himself / herself in rotation, up, down, left, and right. In this manner, the user can move the pointer using only one hand holding the mobile communication terminal and select a desired menu by pressing a selection button with, for example, a thumb. In addition, when a user plays a game using a mobile communication terminal, the user may freely move a specific character of the game in all horizontal directions according to the moving direction of the mobile communication terminal. Therefore, the user can enjoy the game more interestingly.

Meanwhile, in the above-described embodiment, a pointer control device and method for controlling a pointer displayed on a screen of a mobile communication terminal using its own displacement or inclination of the mobile communication terminal and a mobile communication terminal including the pointer control device have been described. . However, the present invention is not limited to such a configuration. For example, in the present invention, the mobile communication terminal having the pointer control device may further include a trackball. In addition, the present invention may further include a touch screen of the mobile communication terminal having the pointer control device.

In the above-described embodiment, a mobile phone, which is one of mobile communication terminals, has been described as an example. However, the present invention is not limited to such a configuration, and may be easily applied to a personal digital assistant (PDA), a smartphone, or the like within the technical idea of the present invention.

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

According to the present invention, a simple operation of moving a mobile communication terminal such as a mobile phone or a personal digital assistant (PDA) can quickly and accurately operate a pointer on the terminal screen to perform a desired task.

According to the present invention, by controlling the pointer by moving the mobile communication terminal, the inconvenience of having to tap the touch screen of the PDA with a pen or press a button of the mobile phone terminal several times to execute a simple command or to input a desired value in the mobile communication terminal There is an advantage that can be greatly reduced.

According to the present invention, it is possible to satisfy user demand for easy browsing on the screen of the mobile communication terminal when using the wireless Internet.

According to the present invention, by enabling the instant interaction between the mobile communication terminal and the user, there is an advantage that it can be widely used in the field of mobile games that require a sense of speed, such as fighter action games, car racing games.

Claims (11)

A pointer control device coupled to a pointer controller of the baseband processor in a mobile communication terminal including an antenna, a high frequency processor, and a baseband processor, A motion detection sensor detecting a displacement or tilt of the mobile communication terminal; A filter unit to filter an output signal of the motion detection sensor; An amplifier for amplifying the filtered signal to a predetermined size; A modulator for transforming the amplified signal into a predetermined signal form; An A / D converter converting the modified analog signal into a digital signal; And A position calculating unit for calculating a moving position value of a pointer displayed on a screen of the mobile communication terminal by using the signal converted by the A / D converter; Including, And the pointer controller controls the pointer using the movement position value. The method of claim 1, The motion detection sensor detects the displacement using a moving distance and a velocity in one of radial directions with respect to a horizontal direction orthogonal to the gravity direction passing through the pointer of the pointer at a current position of the pointer. To do Pointer control device in a mobile communication terminal, characterized in that. The method of claim 1, The motion detection sensor may be configured to use the rotation direction and the rotation speed of the mobile communication terminal based on a gravity direction passing through the pointer of the pointer at the current position of the pointer and a horizontal plane perpendicular to the gravity direction and passing through the pointer. Pointer control device in a mobile communication terminal, characterized in that for detecting the tilt. The method of claim 1, If the plane constituting the screen of the mobile communication terminal is not parallel to the horizontal direction orthogonal to the direction of gravity passing through the pointer of the pointer, the remaining pixels are orthogonal to the direction of gravity and pass on the horizontal line passing through the indication. And a correction value calculating unit configured to calculate a correction value in proportion to a distance from the reference pixel, and to transmit the correction value to the position calculating unit. Pointer control device in a mobile communication terminal, characterized in that. The method of claim 4, wherein The position calculating unit moves the pointer and the moving position of the pointer with respect to the X coordinate and the Y coordinate of the screen based on the signal obtained from the A / D converter and the correction value obtained from the correction value calculator. Calculating a value Pointer control device in a mobile communication terminal, characterized in that. The method of claim 1, And the baseband processing unit includes a peripheral device having a pointer user interface for setting or releasing the pointer controller and a function using the pointer. The method of claim 6, The user interface includes a switch button to toggle the function of the pointer on or off in a toggle manner; Pointer control device in a mobile communication terminal, characterized in that. The method of claim 6, The user interface includes a menu item included in a menu in the mobile communication terminal to set or release a function of the pointer; Pointer control device in a mobile communication terminal, characterized in that. A method of controlling a pointer displayed on a screen of a mobile communication terminal in a pointer control device coupled to a pointer controller of the baseband processor in a mobile communication terminal including an antenna, a high frequency processor, and a baseband processor, Detecting a displacement or tilt of the mobile communication terminal by a motion detection sensor; Transforming the sensed signal into a predetermined signal form; Converting the modified analog signal into a digital signal; And Calculating a moving position value of a pointer displayed on a screen of the mobile communication terminal by a position calculating unit using the converted signal; Including, And the pointer controller controls the pointer using the movement position value. The method of claim 9, If the plane constituting the screen of the mobile communication terminal is not orthogonal to the direction of gravity passing through the indication point of the pointer, the other pixels are orthogonal to the direction of gravity and pass from the reference pixel with respect to the other pixels on the horizontal line passing through the indication point. Computing a correction value in proportion to the distance and transmitting the correction value to the position calculating unit. A mobile communication terminal comprising the pointer control device according to any one of claims 1 to 8.