KR20120074510A - Mobile terminal and method for controlling display movement using camera thereof - Google Patents

Abstract

PURPOSE: A portable terminal and screen motion control method using a camera are provided to embody the skipping and scrolling function of a page in electric-books by sensing the motion of a terminal through the camera of a portable terminal. CONSTITUTION: A camera(121) extracts plural image frames from fixed interval through an image sensor. A control unit(180) determines the moving speed and moving directions of a portable terminal based on a difference value between the image frames. The control unit corrects a display screen by reflecting the moving speed and the moving direction to a page. An electric-book is displayed by an e-book reader.

Description

MOBILE TERMINAL AND METHOD FOR CONTROLLING DISPLAY MOVEMENT USING CAMERA THEREOF}

The present invention relates to a mobile terminal, and more particularly, to a method of controlling a screen movement using a camera in the mobile terminal.

A terminal such as a personal computer, a notebook computer, or a mobile phone has various functions, for example, a multimedia device having a complex function such as photographing or photographing of a moving picture, reproduction of music or a moving picture file, (Multimedia player).

The terminal can move It may be divided into a mobile terminal and a stationary terminal, depending on whether it is present. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

In order to support and enhance the functionality of the terminal, it is contemplated to improve the structural and / or software portion of the terminal.

However, when viewing the Internet web page or using an e-book using a conventional terminal there is an inconvenience that must touch the screen every time the page turns.

According to the present invention, a mobile terminal capable of turning over a page by only physically moving the terminal without touching the screen every time when using an application such as a web page or an e-book in the mobile terminal and a screen using a camera in the mobile terminal Provides a way to control movement.

According to an aspect of the present invention, a camera for extracting a plurality of image frames at regular intervals through an image sensor, a control unit for determining the moving speed and the moving direction of the mobile terminal based on the difference between the plurality of image frames and the movement A mobile terminal including a display unit for correcting a display screen by reflecting a speed and a moving direction is provided.

Here, the controller may compare the pixel data of the specific area of the image frame and determine the moving speed and the moving direction from the position difference of the pixel data of the specific area in the image frame.

Here, the camera may extract image frames at predetermined intervals from the camera preview data input through the image sensor, and store the extracted image frames in the extracted time order.

The display screen may be a web page displayed through a web browser driven on the mobile terminal, and the web page may be larger than the resolution of the display unit.

Here, the area displayed on the web page according to the moving speed and the moving direction may be corrected.

Here, the display screen is an e-book displayed by an e-book reader driven on the mobile terminal, and the e-book recognizes a motion specified by the moving speed and the moving direction to display pages of the e-book. You can scroll or switch.

Here, the motion may be set and changed by the user.

According to another aspect of the present invention, a method of controlling a screen movement using a camera in a mobile terminal, comprising: comparing a size of a display screen with a resolution of a display unit, starting a camera, and a plurality of image frames at regular intervals through the camera Extracting the data, comparing the pixel data of the specific areas of the plurality of image frames to determine the moving speed and the moving direction of the mobile terminal, and changing the display area of the display screen based on the moving speed and the moving direction. Provided is an alarm control method comprising the steps of:

The extracting of the image frame may include receiving camera preview data from an image sensor of the camera, extracting image frames at a predetermined interval from the received camera preview data, and transmitting the extracted image frame to a controller. It may include the step.

The determining of the moving speed and the moving direction may include extracting pixel data constituting a specific region from one image frame and comparing the pixel data with another image frame to determine a position corresponding to the specific region. Finding and comparing the position corresponding to the specific region in the two frames to obtain the difference value, and determining the moving speed and the moving direction from the difference value.

Further, according to another aspect of the present invention, a recording medium in which a program for executing the above-described screen movement adjusting method is recorded and can be read by a mobile terminal can be provided.

According to an embodiment of the present invention, by detecting the movement of the terminal by using the camera of the mobile terminal, the user's convenience by implementing a function that can move the page of the web page or application, or scroll and turn the page of the e-book Provided are a mobile terminal for increasing a height and a screen movement control method using a camera in the mobile terminal.

1 is a block diagram of a mobile terminal to which an embodiment of the present invention can be applied.
Figure 2 is a perspective view showing the appearance of a mobile terminal to which an embodiment of the present invention can be applied.
Figure 3 is a flow chart schematically showing a screen movement adjustment method according to an embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, numerals (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

In addition, in the present specification, when one component is referred to as "connected" or "connected" with another component, the one component may be directly connected or directly connected to the other component, but in particular It is to be understood that, unless there is an opposite substrate, it may be connected or connected via another component in the middle.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention. 2 is a perspective view showing the appearance of a mobile terminal to which an embodiment of the present invention can be applied.

The mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory unit 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential and may implement a mobile terminal having more or fewer components.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems that provide broadcast signals as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory unit 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 refers to a module for wireless Internet access, and the wireless Internet module 113 can be embedded in the mobile terminal 100 or externally. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Near Field Communication (NFC) may be used.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. A typical example of the location information module is a GPS (Global Position System) module. According to the current technology, the GPS module 115 calculates information about a distance of one point (object) away from three or more satellites, and information on a time at which the distance information is measured, and then calculates the calculated distance information. By applying the trigonometric method to, three-dimensional positional information according to latitude, longitude, and altitude of one point at a time can be calculated. Furthermore, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is also used. The GPS module 115 continuously calculates the current position in real time and uses the same to calculate speed information.

Referring to FIG. 1, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122.

The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The camera 121 may update the image received in real time through the image sensor to the screen at a rate of several tens of frames or more per second for camera preview processing. In this case, the task of updating the image frame on the screen may be processed in the background.

In addition, the camera 121 may extract the image frames at regular intervals from the image frames for the camera preview image and store them in the memory unit 160 in order. In addition, the camera 121 may directly transmit the extracted image frame to the controller 180 without storing the extracted image frame.

The image frame processed by the camera 121 may be stored in the memory unit 160 or transmitted to the outside through the wireless communication unit 110. The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 is a user interface for receiving various commands from a user, and its implementation is not particularly limited. For example, the input unit 130 may include a plurality of operation units (see 131 and 132 of FIG. 2) as shown in FIG. 2, and these operation units may include a key pad and a touch pad ( Static pressure / capacitance), wheel keys, jog switches and the like.

In particular, recently, the mobile terminal 100 is generally based on a full touch method employing a touch screen method. In this case, the user input unit 130 is integrally combined with the display unit 151 to be described later. It may be implemented in a soft key method through the entire surface of the.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and may include a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and the like. have.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays photographed and / or received images, a UI, and a GUI.

The display unit 151 may scroll or move the display screen displayed on the display screen based on the moving speed and the moving direction of the mobile terminal 100 determined by the controller 180. For example, the display unit 151 may scroll the display screen in the determined moving direction, and adjust the scroll speed of the display screen according to the moving speed.

In addition, when the controller 180 determines that the user has taken a specific motion based on the movement speed and the movement direction, the display unit 151 may process an operation corresponding to the motion on the display screen. For example, when the user takes a specific motion, the display unit 151 may display the next page of the e-book or enlarge or reduce the web page.

The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, or a three-dimensional display. 3D display).

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is a transparent LCD. The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

According to an implementation form of the mobile terminal 100, two or more display units 151 may exist. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter, abbreviated as “touch screen”), the display unit 151 is an output device. It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor may be configured to detect not only the position and area of the touch but also the pressure and directionality of the touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

In this case, a proximity sensor may be disposed in the inner region of the mobile terminal or the vicinity of the touch screen covered by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without using physical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, and a magnetic proximity sensor.

And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

The proximity sensor detects a proximity touch and a proximity touch pattern (eg, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory unit 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 may output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed by the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may also be output through the display unit 151 or the audio output module 152.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be used for the effects of stimulation by the arrangement of pins vertically moving with respect to the contact skin surface, the effect of the injection force of the air through the injection or inlet or the stimulation through the suction force, and the stimulation that rubs the skin surface. Various tactile effects may be generated, such as effects by stimulation through contact of electrodes, effects by stimulation using electrostatic force, and effects of reproducing a sense of warmth and heat using an endothermic or heat generating element.

The haptic module 154 may not only deliver a haptic effect through direct contact, but also implement a haptic effect through a muscle sense of a user's finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory unit 160 may store a program for the operation of the controller 180 and may store input / output data (eg, a phone book, a message, a still image, a video, etc.). The memory unit 160 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory unit 160 may store the image frame data extracted from the camera 121 and provide the same to the controller 180 at the request of the controller 180.

The memory unit 160 may include a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), Random Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory unit 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or receives power from the external device to transfer the data to each component in the mobile terminal 100 or to transmit data in the mobile terminal 100 to an external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 serves as a passage through which power from the cradle is supplied to the mobile terminal 100, or various command signals input from the cradle by a user. May be a passage that is delivered to the mobile terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The control unit 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 determines the moving speed and the moving direction of the mobile terminal 100 based on the difference value between the image frames input from the camera 121. In detail, the controller 180 compares pixel data of a specific region of an image frame with a next image frame, finds an area similar to pixel data of a specific region in a next image frame, and maintains a predetermined time through the distance and direction between the two regions. It is possible to determine the speed and direction of movement of the mobile terminal.

In addition, the controller 180 continuously measures the moving speed and the moving direction of the mobile terminal for a predetermined time to determine whether a series of operations is performed. If it is determined that the movement speed and the movement direction of the mobile terminal calculated for a certain time constitute a specific operation, the controller 180 may instruct the display unit 151 to perform a function corresponding to the operation. Such a specific operation may be set in advance in the mobile terminal and may be arbitrarily set by the user.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing functions. In some cases, And may be implemented by the control unit 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software code may be stored in the memory unit 160 and executed by the controller 180.

In the above, the overall block diagram and appearance of the mobile terminal to which the present invention can be applied have been described as an example. Hereinafter, a method of controlling screen movement in the mobile terminal according to an embodiment of the present invention will be described with reference to FIG. 3. Let's do it.

3 is a flowchart schematically illustrating a screen control method according to an exemplary embodiment of the present invention.

In operation S310, the controller 180 determines whether an image of the display screen is larger than the resolution provided by the display unit 151. If the image is larger than the resolution provided by the display unit 151, the controller 180 instructs the camera 121 to drive the camera.

Here, the display screen may be a web page displayed in a web browser of the mobile terminal 100 or an e-book content page displayed in an e-book reader.

In operation S320, the camera 121 is driven according to the instruction of the controller 180.

In operation S330, an image frame for a camera preview image is continuously obtained through the image sensor of the camera 121. In addition, the acquired image frame may be an image frame extracted at a predetermined interval from a series of image frames input through the image sensor and stored in time series.

In this case, the image frame obtained through the camera 121 may be processed only through the controller 180 without being displayed on the screen of the mobile terminal 100.

In addition, only the data of a specific region that is easily distinguishable from other portions of the image frame may be extracted, and other portions may be deleted instead of stored, thereby saving storage space.

In operation S340, the controller 180 may calculate the moving speed and the moving direction of the mobile terminal by comparing the extracted series of image frames.

In this case, the controller 180 extracts pixel data constituting a specific region from a series of image frames, and compares the extracted pixel data with data of successive subsequent image frames to determine a position of a similar region. Thereafter, the controller 180 may calculate a moving direction and a moving speed by calculating a change value of a position of a specific region in two image frames.

The calculated movement direction and the movement speed value may be transmitted to the display unit 151.

In operation S350, the display unit 151 corrects the display area of the currently displayed display screen image by using the movement direction and the movement speed value received from the controller 180.

In this case, when the controller 180 determines that the user takes a specific motion based on the moving speed and the moving direction, the display unit 151 may process an operation corresponding to the corresponding motion on the display screen. Such an operation may include an operation such as turning a page, enlarging, reducing or scrolling a screen.

Meanwhile, the algorithm for obtaining the moving speed and the moving direction of the mobile terminal from the image frame may be implemented through other known image processing algorithms other than the above algorithm, which is equally represented in the scope of the present invention.

Although the above has been described with reference to embodiments of the present invention, those skilled in the art may variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And can be changed easily.

100: mobile terminal 120: A / V input unit
121: camera 151: display unit
153: alarm unit 180: control unit

Claims (11)

A camera extracting a plurality of image frames at regular intervals through an image sensor;
A controller configured to determine a moving speed and a moving direction of the mobile terminal based on the difference between the plurality of image frames; And
A display unit for correcting a display screen by reflecting the moving speed and the moving direction
Mobile terminal comprising a. The method of claim 1,
And the control unit compares pixel data of a specific region of the image frame to determine the movement speed and the movement direction from the positional difference of the pixel data of the specific region in the image frame. The method of claim 1,
The camera extracts image frames at predetermined intervals from the camera preview data input through the image sensor, and stores the extracted frames in chronological order. The method of claim 1,
The display screen is a web page displayed through a web browser running on the mobile terminal, wherein the web page is larger than the resolution of the display unit. The method of claim 4, wherein
And the web page is corrected in an area displayed according to the moving speed and the moving direction. The method of claim 1,
The display screen is an e-book displayed by an e-book reader driven on the mobile terminal, and the e-book scrolls pages of the e-book by recognizing a motion specified by the moving speed and the moving direction. The mobile terminal to switch. The method of claim 6,
Wherein the motion can be set and changed by a user. In the method of controlling the screen movement using a camera in a mobile terminal,
Comparing the size of the display screen with the resolution of the display unit;
Starting the camera,
Extracting a plurality of image frames at regular intervals through the camera;
Determining a moving speed and a moving direction of the mobile terminal by comparing pixel data of specific regions of the plurality of image frames; and
Changing a display area of the display screen based on the moving speed and the moving direction;
Screen movement control method comprising a. The method of claim 8,
Extracting the image frame,
Receiving camera preview data from an image sensor of the camera,
Extracting image frames at predetermined intervals from the received camera preview data; and
Transmitting the extracted image frame to a control unit;
How to adjust the screen movement that includes. The method of claim 8,
Determining the moving speed and the moving direction,
Extracting pixel data constituting a specific region from any one image frame,
Comparing the pixel data with other image frames to find a position corresponding to the specific region;
Comparing the positions corresponding to the specific area in two frames to obtain a difference value, and determining the moving speed and the moving direction from the difference value
How to adjust the screen movement that includes. A recording medium on which a program for executing the screen movement adjusting method according to any one of claims 8 to 10 is recorded and can be read by a mobile terminal.

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