KR20120048396A - Mobile terminal and operation control method thereof - Google Patents

Abstract

PURPOSE: A portable terminal and an operation control method thereof are provided to display a preview image through one camera for the generation of a 3D image and to capture the image through the other camera. CONSTITUTION: A first camera(121a) includes an image sensor of a first pixel. A second camera includes an image sensor of a second pixel. A control unit displays a preview image of the first camera on a display unit. The control unit generates an image which is photographed through the second camera.

Description

Mobile terminal and operation control method

The present invention relates to a mobile terminal and a method for controlling the operation thereof, and more particularly, a mobile terminal capable of generating a preview image and a captured image using two cameras used for generating a 3D stereoscopic image, and an operation thereof. It relates to a control method.

A portable terminal is a portable device that is portable and has one or more functions of making voice and video calls, inputting and outputting information, and storing data. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing, playing music files and video files, receiving games, receiving broadcasts, and wireless internet, and have developed a comprehensive multimedia player, .

In the portable terminal implemented in the form of such a multimedia device, new attempts have been applied in various ways in terms of hardware and software to implement complex functions. For example, a user interface environment for a user to search for or select a function easily and conveniently.

Recently, a technique of generating a 3D stereoscopic image by combining a plurality of images photographed by a camera through an image processing process is also used. When such a technology is applied to a portable terminal, a three-dimensional stereoscopic image may be generated using two or more cameras provided in the portable terminal, and the 3D stereoscopic image may be displayed through a display unit provided in the portable terminal.

However, in the case of generating a 2D image in the mobile terminal, when the shooting is selected in the preview mode in which the preview image is displayed by using one camera, the mode must be switched to the capture mode. As a result, a shutter delay or the like occurs.

Therefore, in the case of a mobile terminal provided with a 3D photographing mode capable of generating a 3D stereoscopic image, it is necessary to consider a method of preventing occurrence of a shutter delay using two cameras even when generating a 2D image.

Accordingly, an object of the present invention is to provide a mobile terminal capable of generating a 2D image without a process of switching from the preview mode to the capture mode by using two cameras used for generating a 3D stereoscopic image, and an operation control method thereof. have.

According to an aspect of the present invention, there is provided a portable terminal including a display unit, a first camera having an image sensor having a first pixel number, and an image sensor having a second pixel number higher than the first pixel number. And a controller configured to display a preview screen including a preview image acquired through the first camera on a second camera and the display, and to generate an image photographed by the second camera when the photographing is selected.

In addition, the operation control method of the portable terminal according to the present invention, the first camera is provided with an image sensor having a first pixel number, and the second is provided with an image sensor having a second pixel number higher than the first pixel number Providing a camera, displaying a preview screen including a preview image obtained through the first camera, and, when selecting the photographing, generating an image photographed by the second camera.

According to the present invention, the preview image can be displayed using any one of two cameras for generating 3D stereoscopic images, and the image can be captured using another camera. Accordingly, the preview image can be displayed seamlessly in the shooting mode, and high-quality 2D images can be generated by using the image sensor of the high pixel only in one of the two cameras.

1 is a block diagram of a portable terminal according to an embodiment of the present invention;
2 is a perspective view of a portable terminal according to an embodiment of the present invention;
3 is a rear perspective view of the mobile terminal shown in FIG. 2;
4 is a view referred to explain the configuration of a portable terminal according to an embodiment of the present invention;
5 and 6 are views referred to for explaining a method for generating a 2D image in a mobile terminal according to an embodiment of the present invention;
7 is a flowchart provided to explain an operation control method of a portable terminal according to an embodiment of the present invention; and
8 and 9 are views for explaining an operation control method of a mobile terminal according to an embodiment of the present invention together with a screen displayed on a display unit.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

The portable terminal described in the present specification may be used in various applications such as a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a camera, tablet computers, e-book terminals, and the like. In addition, suffixes "module" and " part "for the components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Therefore, the "module" and "unit" may be used interchangeably.

FIG. 1 is a block diagram of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG. Referring to FIG. 1, a mobile terminal according to an embodiment of the present invention will be described in terms of components according to functions.

1, the portable 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 160, an interface unit 170, a control unit 180, and a power supply unit 190. Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. In this case, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. The broadcast management server may refer to a server for generating and transmitting at least one of a broadcast signal and broadcast related information and a server for receiving at least one of the generated broadcast signal and broadcast related information and transmitting the broadcast signal to the terminal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. 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 also be provided through a mobile communication network, and in this case, may be received by the mobile communication module 113. 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 broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) ), Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcasting signals, as well as the digital broadcasting system. The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 113 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to voice call signal, video call signal, or text / multimedia message transmission and reception.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 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 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 123. 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 image frame processed by the camera 121 may be stored in the memory 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 123 receives an external sound signal by 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 113 and output when the voice data is in the call mode. The microphone 123 may be a variety of noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 generates key input data input by the user for controlling the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (constant voltage / capacitance), etc. that may receive a command or information by a user's push or touch operation. In addition, the user input unit 130 may be configured as a jog wheel or a jog method or a joystick that rotates a key, a finger mouse, or the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal. 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 sensing unit 140 may include a detection sensor 141, a pressure sensor 143, a motion sensor 145, and the like. The detection sensor 141 detects the presence of an object approaching the portable terminal 100 or an object existing in the vicinity of the portable terminal 100 without mechanical contact. The detection sensor 141 may detect a proximity object by using a change in an alternating magnetic field or a change in a static magnetic field, or using a change rate of capacitance. The sensor 141 may be provided with two or more according to the configuration aspect.

The pressure sensor 143 may detect whether pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor 143 may be installed at a portion where the pressure of the portable terminal 100 is required depending on the use environment. If the pressure sensor 143 is installed in the display unit 151, a touch input through the display unit 151 and a greater pressure than the touch input are applied according to a signal output from the pressure sensor 143. The pressure touch input can be identified. Also, the magnitude of the pressure applied to the display unit 151 at the time of the pressure touch input can be determined according to the signal output from the pressure sensor 143. [

The motion sensor 145 detects the position and movement of the portable terminal 100 using an acceleration sensor, a gyro sensor, or the like. An acceleration sensor that can be used for the motion sensor 145 is a device that converts an acceleration change in one direction into an electric signal and is widely used along with the development of MEMS (micro-electromechanical systems) technology. The acceleration sensor measures the acceleration of a small value built in the airbag system of an automobile and recognizes the minute motion of the human hand and measures the acceleration of a large value used as an input means such as a game There are various types. Acceleration sensors are usually constructed by mounting two or three axes in one package. Depending on the usage environment, only one axis of Z axis is required. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate.

The gyro sensor is a sensor for measuring the angular velocity, and it can sense the direction of rotation with respect to the reference direction.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

The display unit 151 displays and outputs information processed by the mobile terminal 100. For example, when the portable terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the portable terminal 100 is in the video communication mode or the photographing mode, the photographed or received images can be displayed individually or simultaneously, and the UI and the GUI are displayed.

Meanwhile, as described above, when the display unit 151 and the touch pad form a mutual layer structure and constitute a touch screen, the display unit 151 is an input device capable of inputting information by a user's touch in addition to the output device. May also be used.

If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside and may be connected to the internal bus of the portable terminal 100. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals, and then transmits corresponding data to the controller 180 so that the controller 180 can determine whether the touch input has been made and which area of the touch screen has been touched.

The display unit 151 may be formed of an e-paper. Electronic paper (e-Paper) is a kind of reflective display, and has excellent visual characteristics such as high resolution, wide viewing angle and bright white background as conventional paper and ink. The electronic paper (e-paper) can be implemented on any substrate such as plastic, metal, paper, and the image is retained even after the power is shut off, and the battery life of the portable terminal 100 is long Can be maintained. As the electronic paper, a hemispherical twist ball filled with a telephone can be used, or an electrophoresis method and a microcapsule can be used.

In addition, the display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of (3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, the external display unit (not shown) and the internal display unit (not shown) may be simultaneously provided in the portable terminal 100.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 outputs sound signals related to functions performed in the portable terminal 100, for example, a call signal reception tone, a message reception tone, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 outputs a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. The alarm unit 155 can output a signal to notify when a call signal is received or a message is received. Also. When the key signal is input, the alarm unit 155 may output the signal as a feedback to the key signal input. The user may recognize the occurrence of an event through the signal output from the alarm unit 155. A signal for notifying the occurrence of an event in the portable terminal 100 may also be output through the display unit 151 or the sound output module 153. [

The haptic module 157 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration with a haptic effect, the intensity and pattern of the vibration generated by the haptic module 157 can be converted, and the different vibrations can be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 157 may be provided with a function of stimulating by a pin arrangement vertically moving with respect to the contact skin surface, an effect of stimulating air through the injection or suction force of the air through the injection port or the suction port, The effect of stimulation through contact of an electrode (eletrode), the effect of stimulation by electrostatic force, and the effect of reproducing a cold sensation using a device capable of endothermic or exothermic can be generated. The haptic module 157 can be implemented not only to transmit the tactile effect through direct contact but also to feel the tactile effect through the muscular sense of the user's finger or arm. Two or more haptic modules 157 may be provided according to a configuration aspect of the mobile terminal 100.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input or output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM , And a ROM. ≪ / RTI > In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. Examples of the external device connected to the portable terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a SIM (Subscriber Identification Module) card, a UIM An audio input / output (I / O) terminal, a video I / O (input / output) terminal, and an earphone. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device .

The interface unit 170 is a path through which power from the cradle connected when the portable terminal 100 is connected to the external cradle is supplied to the portable terminal 100 or various command signals inputted from the cradle by the user are carried And may be a passage to be transmitted to the terminal 100.

The controller 180 typically controls the operation of the respective units to control the overall operation of the mobile terminal 100. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or may be configured in software separately from the controller 180.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The mobile terminal 100 having such a configuration can be configured to be operable in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system. have.

2 is a perspective view of the portable terminal according to an embodiment of the present invention, and FIG. 3 is a rear perspective view of the portable terminal illustrated in FIG. 2. Hereinafter, the portable terminal according to the present invention will be described with reference to FIGS. 2 and 3 in terms of components according to the external form. Hereinafter, for convenience of description, a bar-type portable terminal having a front touch screen among various types of portable terminals such as a folder type, a bar type, a swing type, a slider type, etc. will be described as an example. However, the present invention is not limited to a bar-type portable terminal, but can be applied to all types of portable terminals including the above-mentioned type.

Referring to FIG. 2, the case constituting the outer appearance of the portable terminal 100 is formed by the front case 100-1 and the rear case 100-2. Various electronic components are incorporated in the space formed by the front case 100-1 and the rear case 100-2. The front case 100-1 and the rear case 100-2 may be formed by injecting a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the first sound output module 153a, the camera 121a, and the first to third user input units 130a, 130b, and 130c may be disposed in the main body, specifically, the front case 100-1. Can be. A fourth user input unit 130d, a fifth user input unit 130e, and a microphone 123 may be disposed on a side surface of the rear case 100-2.

The display unit 151 may be constructed such that the touch pad is overlapped with the layer structure so that the display unit 151 operates as a touch screen so that information can be input by a user's touch.

The first acoustic output module 153a may be implemented in the form of a receiver or a speaker. The first camera 121a may be implemented in a form suitable for capturing an image or a moving image of a user. The microphone 123 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The first through fifth user input units 130a 130b 130c 130d and 130e and the sixth and seventh user input units 130f and 130g described below may be collectively referred to as a user input unit 130, Any manner can be employed in a tactile manner.

For example, the user input unit 130 may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be operated as a wheel or jog or a joystick that rotates a key. Or the like. In functional terms, the first to third user input units 130a, 130b, and 130c are for inputting commands such as start, end, scroll, and the like, and the fourth user input unit 130d is for inputting a selection of an operation mode or the like. It is for. In addition, the fifth user input unit 130e may operate as a hot-key for activating a special function in the mobile terminal 100.

 Referring to FIG. 3, two cameras 121b and 121c may be additionally mounted at the rear of the rear case 100-2, and sixth and seventh user inputs may be provided at the side of the rear case 100-2. 130f and 130g and the interface unit 170 may be disposed.

The two cameras 121b and 121c disposed on the rear surface have a photographing direction substantially opposite to the camera 121a disposed on the front surface, and may have different pixels. The two cameras 121b and 121c disposed on the rear surface may be used simultaneously to generate a 3D stereoscopic image in a 3D photographing mode for capturing a 3D stereoscopic image, or may be independently used to generate 2D images. In addition, the distance between the two cameras 121b and 121c disposed on the rear side may be adjusted to adjust the size and the pixel of the 3D stereoscopic image that can be generated through the two cameras 121b and 121c. It may be. For this configuration, one of the two cameras 121b and 121c may be moved to the left and right, and the distance between the two cameras 121b and 121c may be adjusted.

On the rear side, a flash 125 and a mirror (not shown) may be further disposed between the two cameras 121b and 121c. The flash 125 emits light toward the subject when the subject is photographed by the two cameras 121b and 121c. The mirror allows the user to look at his / her own face or the like when he / she wants to photograph himself (self-shooting).

A second sound output module (not shown) may be further disposed in the rear case 100-2. The second sound output module may implement the stereo function together with the first sound output module 153a, and may be used for talking in the speakerphone mode.

The interface unit 170 can be used as a path for exchanging data with an external device. In addition, an antenna (not shown) for receiving a broadcast signal may be disposed in one area of the proton case 100-1 and the rear case 100-2. The antenna may be installed to be capable of being drawn out from the rear case 100-2.

A power supply unit 190 for supplying power to the portable terminal 100 may be mounted on the rear case 100-2. The power supply unit 190 may be a rechargeable battery, for example, and may be detachably coupled to the rear case 100-2 for charging or the like.

In the above description, the second camera 121b and the like are disposed on the rear case 100-2, but the present invention is not limited thereto. In addition, even if the second camera 121b is not separately provided, the first camera 121a may be rotatably formed to be able to photograph up to the photographing direction of the second camera 121b.

4 is a view referred to explain the configuration of a portable terminal according to an embodiment of the present invention. The mobile terminal 100 according to the present invention may generate a 3D stereoscopic image by using two cameras 121b and 121c at the rear of the main body. For convenience of description, the two cameras 121b and 121c disposed on the rear surface are referred to as a first camera 121b and a second camera 121c, respectively.

Referring to FIG. 4, when photographing a subject through the first and second cameras 121b and 121c, an image photographed by the first camera 121b and the second camera 121c may be generated. The parallax of the two images may be used to generate a stereoscopic 3D image.

Here, the 3D stereoscopic image refers to an image that allows the user to feel the gradual depth and reality where an object is placed on a monitor or screen in the same way as the real space. In 3D stereoscopic images, when two eyes see different two-dimensional images and the images are transmitted to the brain through the retina, the 3D stereoscopic images are fused to make the stereoscopic image feel the depth and reality. The binocular disparity made by the position of the eyes of a person approximately 65 mm apart gives a three-dimensional impression. Binocular disparity is the most important factor that all three-dimensional display devices must satisfy.

The 3D stereoscopic image generated by the controller 180 may be displayed as a 3D stereoscopic image through the display unit 151. You can also print 3D photos using dedicated photo paper and equipment. In addition to shooting still images, 3D stereoscopic images may be generated in the same manner.

The 3D stereoscopic image may be represented by a stereoscopic method using glasses, an auto-steroscopic method using glasses, and a projection method using holographic. Stereoscopic methods are widely used in home TVs, and portable terminals are mainly used in an autostereoscopic method.

In addition, since the 3D stereoscopic image may be generated in the region 200 where the photographing ranges of the first and second cameras 121b and 121c overlap, the resolution 215 of the 3D stereoscopic image actually generated is the first camera 121b. ) May be smaller than the resolution 210 that can be taken with a second resolution or the resolution 213 that can be taken with a second camera 121c.

5 and 6 are views for explaining a method of generating a 2D image in a mobile terminal according to an embodiment of the present invention.

5 illustrates a camera photographing sequence when generating a 2D image with one camera. Referring to FIG. 5, in a preview mode displaying a preview image, when a photographing signal is input, the image is switched to a capturing mode and stabilized, and then the image is captured, the captured image is stored, and the mode is switched again. To enter the preview mode.

In this case, a shutter delay 200 occurs in the process of switching from the preview mode to the image capture mode, and a time delay occurs until the 2D image is generated after the photographing signal is input. In addition, the preview image cannot be displayed during the capture or the like.

6 illustrates a camera photographing sequence when generating 2D images with two cameras. Referring to FIG. 6, a preview image is displayed using the first camera 121b, and the second camera 121c is used for photographing.

In such a configuration, the preview image can be displayed without interruption through the first camera 121b, and the second camera 121c captures the image immediately according to the photographing signal in the standby state. It does not occur.

In addition, there is an advantage that a high-quality 2D image can be generated even by using a high pixel image sensor only for the camera used for photographing, without using a high pixel image sensor for both the first and second cameras 121b and 121c. .

7 is a flowchart provided to explain an operation control method of a portable terminal according to an embodiment of the present invention.

Referring to FIG. 7, when the 2D photographing mode is selected in the camera menu according to a user command or the like (S300), the controller 180 displays a preview image acquired through the first camera 121b on the display unit 151 ( S305).

 When shooting is selected by manipulating a shooting button while the 3D preview image is displayed (S310), the controller 180 can take a picture through the second camera 121c equipped with a higher pixel image sensor than the first camera 121b. Control to be performed (S315).

That is, the preview image is displayed by using the first camera 121b, and the image of a higher pixel than the first camera is photographed by the second camera 121c equipped with the sensor. In this case, the photographed image may be displayed by replacing the preview image. Depending on the setting state, the captured image may be displayed in one region of the preview screen. In addition, the captured image may be stored in the memory 160.

If another function is selected, such as setting a shooting environment or switching a shooting mode (S320), the controller 180 controls to perform an operation corresponding to the selected function (S325).

This process is repeatedly performed until the 2D shooting mode ends (S330). In addition, by the above process, the 2D image can be generated without the actual shutter delay, and the preview image can be displayed continuously during the shooting.

8 and 9 are views for explaining an operation control method of a mobile terminal according to an embodiment of the present invention together with a screen displayed on a display unit.

FIG. 8A illustrates a preview screen 400 including a preview image acquired through the first camera 121b in the 2D photographing mode. When shooting is selected while such a preview screen 400 is displayed, shooting is performed by using the second camera 121c, and as shown in FIG. 8B, a screen including the captured image is included. 410 may be displayed. When the set time elapses or there is another user input, as shown in FIG. 8C, the preview screen 9420 including the preview image acquired through the first camera 121b may be displayed again.

FIG. 9A illustrates a preview screen 430 using the first camera 121b in the 2D photographing mode. When shooting is selected while the preview screen 430 is displayed, as shown in FIG. 9B, an image photographed using the second camera 121c in one region of the preview screen 430. 440 may be displayed.

If a predetermined time has elapsed or there is a predetermined user input, as illustrated in FIG. 9C, the image 440 captured on the preview screen 430 may disappear.

The same process may be applied to video shooting. That is, a video may be photographed with any one of the first and second cameras 121b, and 2D images may be photographed with the other.

In addition, in the above-described embodiment, the selection of the photographing may be automatically performed by the detection of the smiling figure in addition to the shutter input. In addition, the portable terminal and its operation control method according to the present invention are not limited to the configuration and method of the embodiments described as described above, the embodiments are all of the embodiments so that various modifications can be made Or some may be selectively combined.

Meanwhile, the present invention can be implemented as a processor-readable code in a processor-readable recording medium provided in a portable terminal. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and also include a carrier wave such as transmission through the Internet. The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: wireless communication unit 120: A / V input unit
130: user input unit 140: sensing unit
150: output unit 151: display unit
160: memory 170: interface unit
180:

Claims (10)

A display unit;
A first camera having an image sensor having a first pixel number;
A second camera having an image sensor having a second number of pixels higher than the first number of pixels; And
And a controller configured to display a preview screen including a preview image acquired through the first camera on the display unit, and to generate an image photographed by the second camera when the photographing is selected. The method of claim 1,
The controller may be configured to display the captured image on one region of the preview screen. The method of claim 1,
The controller may be configured to display the captured image by replacing the preview image. The method of claim 1,
The controller generates a 3D stereoscopic image by using parallaxes of the images respectively photographed by the first and second cameras in the 3D photographing mode. The method of claim 1,
And a memory configured to store data corresponding to the photographed image. Providing a first camera having an image sensor having a first pixel number and a second camera having an image sensor having a second pixel number higher than the first pixel number;
Displaying a preview screen including a preview image acquired through the first camera; And
And selecting an image to generate an image captured by the second camera. The method of claim 6,
And displaying the captured image on one area of the preview screen. The method of claim 6,
And displaying the captured image for a predetermined time by replacing the preview image. The method of claim 6,
The method of claim 1, further comprising: generating an image captured by the second camera while capturing the video through the first camera. The method of claim 6,
And generating a 3D stereoscopic image by using parallaxes of the images respectively captured by the first and second cameras in the 3D photographing mode.

Images