KR101802755B1 - Mobile terminal and method for controlling the same - Google Patents

Abstract

The present invention relates to a mobile terminal providing a 3D image without distortion by tilting the 3D image according to a position of a display unit on which a D image is displayed, and a control method thereof.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002]

The present invention relates to a mobile terminal and a control method thereof, in which usage of a terminal can be realized by further considering convenience of a user.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. 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.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

In recent years, as 3D (hereinafter, 3D) images can be implemented in the display unit of a terminal, various functions using the 3D image have been demanded.

That is, a plurality of cameras for capturing left and right eye images are installed in the mobile terminal, and 3D images can be generated and displayed using the left and right eye images input from the cameras.

Meanwhile, when the user views the 3D image through the terminal as described above, as shown in FIG. 1, when the display unit 10 displaying the 3D image is inclined in a specific direction or when hand shake occurs , Distortion occurs in the 3D image.

FIG. 1 is a diagram illustrating a distortion in a 3D image when a display unit displaying a conventional 3D image is tilted.

Referring to FIG. 1, a 3D image displayed on the display unit 10 of the terminal is generated by superimposing a left eye image 11 and a right eye image 12.

At this time, if the display unit 10 is tilted or tilted in a specific direction by the user, the 3D image displayed on the display unit 10 is distorted.

FIG. 1 shows that the display unit 10 is tilted in the rear direction with respect to the front surface. In this case, the overlapped region of the left and right eye images 11 and 12 of the 3D image extends in the backward direction Thus, there is a problem that when the user views the 3D image of excessive parallax, the eyes may easily become fatigued or unpleasantly uncomfortable.

An object of the present invention is to provide a mobile terminal providing a 3D image without distortion by tilting the 3D image according to a position of a display unit on which a 3D image is displayed, and a control method thereof.

According to an aspect of the present invention, there is provided a mobile terminal including: a display unit displaying three-dimensional (3D) images; A motion sensor for detecting movement of the mobile terminal; And a controller for correcting and displaying the 3D image according to the motion of the mobile terminal measured through the motion sensor.

According to another aspect of the present invention, there is provided a method of controlling a mobile terminal, comprising: displaying a three-dimensional (3D) image; Detecting movement of the mobile terminal; And correcting and displaying the 3D image according to the detected motion.

The mobile terminal and its control method according to the present invention provide a 3D image without distortion even when the display unit is tilted during viewing of the 3D image.

FIG. 1 is a diagram illustrating a distortion in a 3D image when a display unit displaying a conventional 3D image is tilted.
2 is a block diagram illustrating a mobile terminal according to an embodiment of the present invention.
3A is a perspective view of an example of a mobile terminal according to the present invention.
3B is a rear perspective view of the mobile terminal shown in FIG. 3A.
4 is a conceptual diagram for explaining the principle of the binocular parallax.
FIG. 5 is a conceptual diagram for explaining distance feeling and 3D depth by binocular parallax.
6 is a conceptual diagram illustrating a method of implementing a 3D stereoscopic image in a display unit of a visual barrier scheme applicable to embodiments of the present invention.
7 is a flowchart illustrating a process of correcting a 3D image according to an embodiment of the present invention.
8 to 11 are diagrams illustrating a process of correcting a 3D image according to a first embodiment of the present invention.
FIG. 12 is a flowchart of a second embodiment illustrating a process of correcting a 3D image according to the present invention.
13 to 15 are views for explaining a second embodiment of a process of correcting a 3D image according to the present invention.
16 is a flowchart of a third embodiment illustrating a process of correcting a 3D image according to the present invention.
17 is a diagram for explaining a third embodiment of a process of correcting a 3D image according to the present invention.

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

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, it should be noted that the above-mentioned "module" and "part"

The mobile terminal according to the present invention can be implemented in various forms. For example, the mobile terminal described herein may be a smart phone, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, a notebook PC, or the like.

Hereinafter, a mobile terminal according to the present invention will be described in detail with reference to FIG.

2 is a block diagram illustrating a mobile terminal according to an embodiment of the present invention.

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

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 unit 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115.

The broadcast receiving unit 111 receives a 2D or 3D broadcast signal and / or information related to the broadcast from an external broadcast management server through a broadcast channel.

Meanwhile, the broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is 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, broadcast programming information such as an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiver 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) (DVB-CBMS), OMA-BCAST, and ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

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 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 114 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 a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites, and then applies trigonometry to the calculated information to obtain a three-dimensional string of latitude, longitude, The location information can be accurately calculated. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

Referring to FIG. 1, an 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 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can 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. [

At this time, two or more cameras 121 may be provided depending on the use environment.

For example, the camera 121 may include first and second cameras 121a and 121b for capturing 3D images on the opposite side of the display unit 151 of the mobile terminal 100, A third camera 121c for self-photographing the user may be provided in a part of the surface of the display unit 151 of the terminal 100. [

In this case, the first camera 121a is for capturing the left eye image, which is the source image of the 3D image, and the second camera 121b, for the right eye image capturing.

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. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

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 is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141. This will be discussed later in connection with touch screens.

The sensing unit 140 further includes a motion sensor 142 for sensing motion of the main body of the mobile terminal 100 and outputting the sensed result to the controller 180.

That is, the motion sensor 142 is also called an acceleration sensor, and measures the acceleration of three axes of the X-axis, the Y-axis, and the Z-axis and detects the tilt and the moving motion of the mobile terminal 100 .

The output unit 150 is for generating an output relating to visual, auditory or tactile sense and includes a display unit 151, an acoustic output module 152, an alarm unit 153, a haptic module 154, 155, and the like.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile 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 mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. 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 each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, 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 a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

The proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed 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 a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

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

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

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

The audio output module 152 may output 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 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm module 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm module 153 may output a signal for informing occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. In this case, the display unit 151 and the audio output module 152 may be a kind of the alarm module 153. For example, the display unit 151 and the audio output module 152 may be connected to the display unit 151 or the audio output module 152, .

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of the vibration generated by the hit 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 include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. At least two haptic modules 154 may be provided according to the configuration of the mobile terminal 100.

The projector module 155 is an element for performing an image project function using the mobile terminal 100 and may be the same as the image displayed on the display unit 151 according to a control signal of the controller 180 At least some of which can display other images on an external screen or wall.

Specifically, the projector module 155 includes a light source (not shown) for generating light (for example, laser light) for outputting an image to the outside, a light source And a lens (not shown) for enlarging and outputting an image at a predetermined focal distance to the outside. Further, the projector module 155 may include a device (not shown) capable of mechanically moving the lens or the entire module to adjust the image projection direction.

The projector module 155 can be divided into a CRT (Cathode Ray Tube) module, an LCD (Liquid Crystal Display) module and a DLP (Digital Light Processing) module according to the type of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by enlarging and projecting an image generated by reflecting light generated from a light source on a DMD (Digital Micromirror Device) chip.

Preferably, the projector module 155 may be longitudinally provided on the side, front, or back of the mobile terminal 100. It goes without saying that the projector module 155 may be provided at any position of the mobile terminal 100 as occasion demands.

The memory 160 may store a program for processing and controlling the control unit 180 and may store programs for inputting / outputting data (e.g., telephone directory, message, audio, still image, electronic book, It may also perform functions for temporary storage. The memory unit 160 may store the frequency of use of each of the data (for example, each telephone number, each message, frequency of use for each multimedia), and importance. In addition, the memory unit 160 may store data on vibration and sound of various patterns output when the touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, an SD or XD memory A static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM) Magnetic disk, magnetic disk, magnetic disk, or optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 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 supplies power to each component in the mobile terminal 100 or transmits data to the 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 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user to the cradle may be transmitted It can be a passage to be transmitted to the 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 controller 180 typically controls the overall operation of the mobile terminal 100. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. 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 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The display moving unit 185 may be installed at one or more corners of the display unit 151 and is installed at four corners of the display unit 151 in FIG.

The display moving unit 185 may be a piezo motor. When the motion corresponding to the hand tremor of the mobile terminal 100 is detected through the motion sensor 142, The display unit 151 is moved so that the hand tremble is canceled.

That is, the display moving unit 185 tilts the display unit 151 in any one of the up, down, left, and right directions to cancel the camera shake, And the camera shake is canceled.

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 various embodiments described herein may be embodied 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 a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

3A is a perspective view of an example of a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has a bar-shaped body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The display unit 151, the sound output unit 152, the third camera 121c, the user input units 130/131 and 132, the microphone 122, the interface 170 and the like are disposed in the front body 101 .

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

Four display moving parts 185a, 185b, 185c and 185d for moving the display part 151 are installed at four corners of the display part 151. The four display moving parts 185a and 185b , 185c and 185d can adjust the movement of the display unit 151 so that the hand tremble is canceled when the hand tremor is detected on the display unit 151. [

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 The touch recognition mode can be activated or deactivated.

3B is a rear perspective view of the mobile terminal shown in FIG. 3A.

Referring to FIG. 3B, first and second cameras 121a and 121b for 3D image capturing may be additionally mounted on the rear surface of the terminal body, that is, the rear case 102 according to the present invention.

At this time, the first and second cameras 121a and 121b can shoot a normal 2D image in addition to the 3D image function. Although not shown in the figure, mirrors and flashes may be further formed around the first and second cameras 121a and 121b.

The flash illuminates the subject when the subject is photographed by the first and second cameras 121a and 121b. The mirror enables the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) using the first and second cameras 121a and 121b.

Meanwhile, the first and second cameras 121a and 121b may be cameras having the same imaging direction as the third camera 121c and having the same or different pixels as the third camera 121c.

For example, the third camera 121c has low pixels so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the first and second cameras 121a and 121b are general subjects Since it is often not photographed and transmitted immediately, it is preferable to have a high pixel.

An acoustic output module 152 'may be additionally disposed on the rear side of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output module 152 (see FIG. 3A) and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for communication, a broadcast signal receiving antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiver 111 (see FIG. 3), may be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the mobile terminal 100 is mounted on the terminal body. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may be of a light transmission type for the display unit 151. [ In this case, if the display unit 151 is configured to output the time information on both sides (i.e., in the directions of both the front and back sides of the mobile terminal), the time information can be recognized through the touch pad 135 do. The information output on both sides may be all controlled by the touch pad 135. [

Meanwhile, the display for exclusive use of the touch pad 135 may be separately installed, so that the touch screen may be disposed in the rear case 102 as well.

The touch pad 135 operates in correlation with the display portion 151 of the front case 101. The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

Hereinafter, a 3D image control process of a mobile terminal that can be applied to embodiments of the present invention will be described.

The stereoscopic image that can be implemented on the display unit 151 of the mobile terminal can be roughly divided into two categories. The criterion for this classification is whether or not different images are provided in both eyes.

First, we describe the first stereoscopic image category.

The first category is monoscopic in that the same image is provided in both eyes, which is advantageous in that it can be implemented as a general display unit. More specifically, the controller 180 arranges a polyhedron generated through one or more points, lines, faces, or a combination thereof on an imaginary three-dimensional space, and displays the image viewed at a specific time on the display unit 151 . Therefore, the substantial part of such a stereoscopic image can be referred to as a planar image.

The second category is a stereo scopic method in which different images are provided in both eyes. It is a method using a principle of feeling a three-dimensional feeling when a human is looking at an object with the naked eye. In other words, the two eyes of a person see different plane images when they see the same thing by the distance between them. These different planar images are transmitted to the brain through the retina, and the brain fuses them to feel the depth and reality of the stereoscopic image. Therefore, binocular disparity due to the distance between the two eyes makes a sense of stereoscopic effect, and this binocular disparity becomes the most important element of the second category. This binocular disparity will be described in more detail with reference to Fig.

4 is a conceptual diagram for explaining the principle of the binocular parallax.

In Fig. 4, it is assumed that the cube 31 is placed in front of the eye at a level lower than eye level and viewed with the naked eye. In this case, a left-eye plane image 32 in which only the top, front, and left sides of the hexahedron 31 are visible in the left eye. In addition, a right-eye plane image 33 in which only the top, front, and right sides of the hexahedron 31 are visible in the right eye.

If the left eye plane image 32 is left in the left eye and the right eye plane image 33 is in the right eye, the person can actually feel as if he is looking at the hexahedron 31, even if he or she is not in front of the actual eye.

As a result, in order for the stereoscopic image of the second category to be implemented in the mobile terminal, the left eye image and the right eye image of the same object, which are viewed with a time lag, should be distinguished from each other through the display unit. Next, 3D depth due to binocular parallax will be described with reference to FIG.

FIG. 5 is a conceptual diagram for explaining distance feeling and 3D depth by binocular parallax.

5, when viewing the hexahedron 40 at a distance d1 through both eyes, the lateral specific gravity of the image coming into each eye is relatively higher than when viewing the hexahedron 40 at the d2 distance, The difference becomes large. Also, the degree of three-dimensional sensation experienced by a person when viewing the hexahedron 40 at a distance d1 is greater than when viewing the hexahedron 40 at a distance d2. In other words, when a person looks at an object through both eyes, the closer to the object, the greater the three-dimensional feeling, and the farther the object, the less the three-dimensional feeling.

This difference in 3D sensibility can be quantified in 3D depth or 3D level.

Next, an implementation method of the 3D stereoscopic image will be described.

As described above, in order to realize a 3D stereoscopic image, it is necessary that the right eye image and the left eye image are divided into two and reach the binocular. Various methods for this are described below.

1) Parallax barrier method

The parallax barrier method is a method of electronically driving a blocking device provided between a display unit and a binocular to control the traveling direction of light, thereby achieving different images in both eyes.

This will be described with reference to FIG.

6 is a conceptual diagram illustrating a method of implementing a 3D stereoscopic image in a display unit of a visual barrier scheme applicable to embodiments of the present invention.

The structure of the display unit 151 of the field barrier type for displaying the 3D stereoscopic image may have a structure in which the switch liquid crystal 151b is combined with the general display device 151a. The optical parallax barrier 50 is operated by using the switch liquid crystal 151b as shown in FIG. 6 (a) to control the traveling direction of light so that different lights can be separated from the left and right eyes. When an image in which the right eye image and the left eye image are combined is displayed on the display device 151a, the user can see the image corresponding to each eye and feel as if the eye image is displayed as a three-dimensional object.

In addition, as shown in FIG. 6 (b), the parallax barrier 50 by the switch liquid crystal is electrically controlled so that light is totally transmitted, thereby eliminating the separation of light by the parallax barrier so that the same image can be seen in the right and left eyes It is possible. In this case, the same function as the general display unit can be achieved.

6 illustrates that the parallax barrier moves parallel to one axial direction. However, the present invention is not limited thereto, and a parallax barrier that can move in parallel in two or more axial directions may be used in accordance with the control signal of the controller 180 have.

2) Lens refraction method

The lens refraction method (lenticular) is a method using a lenticular screen provided between a display part and a binocular eye, and a method of refracting a traveling direction of light through lenses on a lenticular screen so that different images are reached in both eyes.

3) polarized glasses system

Polarized light is polarized so that the directions of polarization are orthogonal to each other to provide different images in both directions or in the case of the circular polarized light so that the directions of rotation are different from each other.

4) Active shutter method

Eye image is alternately displayed at a predetermined cycle through the display unit and the user's eyeglasses are arranged such that when the image in the corresponding direction is displayed, the shutter in the opposite direction is closed, To reach the eye. That is, during the time when the left eye image is displayed, the shutter of the right eye is closed to allow the left eye image to be reached only in the left eye, and the shutter of the left eye is closed during the time when the right eye image is displayed.

It is assumed that the mobile terminal according to an embodiment of the present invention described below can provide a 3D stereoscopic image to the user through the display unit 151 through any of the methods described above.

7 to 17, when the display unit 151 is tilted or the display unit 151 is tilted in the state that the display unit 151 displays the 3D image, The process of correcting distortion in the case where distortion occurs is described in detail.

7 to 11, a process of tilting and correcting the 3D image according to the tilting angle of the display unit 151 when the display unit 151 is tilted will be described in detail.

[First Embodiment]

A first embodiment of the present invention relates to a process of tilting and correcting a 3D image according to a tilting angle of the display unit when a display unit displaying a 3D image is tilted by a user.

7 is a flowchart illustrating a process of correcting a 3D image according to an embodiment of the present invention.

8 to 11 are diagrams illustrating a process of correcting a 3D image according to a first embodiment of the present invention.

7 to 11, when the 3D image 310 is displayed on the display unit 151 at step S110, the control unit 180 of the mobile terminal 100 drives the motion sensor 142, And detects whether the display unit 151 is tilted through the sensor 142 (S120).

In this case, the 3D image 310 may be generated using the left eye and right eye images photographed through the first and second cameras 121a and 121b, and the 3D image 310 may be generated using 3D images received from the outside through the wireless communication unit 110. [ And may be a 3D image provided in advance in the memory 160. [

If the tilting angle of the display unit 151 is detected through the motion sensor 142 at step S130, the control unit 180 determines the tilting angle of the display unit 151 based on the detected tilting movement [S140].

Then, the control unit 180 tilts the 3D image 310 based on the detected tilting angle of the display unit 151 (S150).

At this time, the control unit 180 tilts the 3D image 310 by the tilted angle in a direction opposite to the detected tilting angle of the display unit 151 to correct the tilting angle.

8 (a) shows that the 3D image 310 is displayed on the display unit 151. In FIG.

8 (b), when the tilting of the display unit 151 is detected through the motion sensor 142, the controller 180 determines that the tilting angle? identify _1), and the, the tilting angle of the hold display unit (151) (θ the tilt angle ₁₎ direction, as opposed to (as long as the 3D image θ ₁₎ as shown in Figure 8 (c) ( 310).

9, the memory 160 includes a table 410 in which one or more tilting angles of the display unit and one or more optimized tilting angles are mapped, respectively, and the table 410 The 3D image 310 may be tilted and corrected according to the tilting angle of the display unit 151. [

The table 410 shown in FIG. 9A shows that the tilting angle of one or more display portions 151 and one or more optimized tilting angles are respectively mapped.

That is, the optimized tilting angle refers to an angle within a range in which no distortion occurs in the 3D image according to the tilting angle of the display unit 151.

The table 410 may be included in the 3D image 310 or may be acquired from a web site through the wireless communication unit 110. [

9 (b), when the controller 151 detects that the display unit 151 is tilted at an angle of &thgr; _1a through the motion sensor 142, the table 410 retrieves the θ _1b optimized tilt angle mapped to θ _1a tilting angle of the sensed within and, as shown in Figure 9 (b), θ to the 3D image 310 detected the provided in _{1b. The} tilting angle is optimized by the tilting angle.

10, when the tilting of the display unit 151 is sensed through the motion sensor 142, the control unit 180 controls the angle of the tilting of the 3D image 310 A user interface (UI) 420 may be displayed, and the 3D image 310 may be tilted and corrected according to the tilting angle 421 input through the UI.

9 (a), when the tilting of the display unit 151 is sensed, the controller 180 displays the image on the display unit 151 as shown in FIG. 9 (b) The display of the 3D image 310 is stopped and the UI 420 in the form of an input window is displayed.

10 (c), when the tilting angle 421 is inputted through the UI 420, the control unit 180 displays the 3D image 310 (FIG. 10 ).

11A, when the 3D image 310 is tilted by the process of FIGS. 7 to 10, the control unit 180 displays the 3D image 310 currently being reproduced on the display unit 151, The first information 430A indicating that the mobile terminal 310 is in a tilted state can be displayed.

At this time, the first information 430A may be a combination of one or more of text, image, icon, animation, and the like, and may indicate a tilted angle of the 3D image 310. [

11A, when the first information 430A is selected, the controller 180 releases the tilted 3D image 310 and displays the tilted 3D image 310, The second information 430B indicating that the tilting is released can be displayed. At this time, if the second information 430B is selected, the controller 180 again tilts the 3D image 310 according to the procedure of FIGS. 7 to 10, and displays the first information 430A.

The first embodiment of the present invention has been described above in detail with reference to Figs. 7 to 11. Fig.

Hereinafter, a second embodiment of the present invention will be described in detail with reference to FIGS. 12 to 15. FIG.

[Second Embodiment]

A second embodiment of the present invention relates to a process of adjusting a position of the display unit and correcting the 3D image when the display unit displaying the 3D image is tilted or moved due to the shaking of the user.

FIG. 12 is a flowchart of a second embodiment illustrating a process of correcting a 3D image according to the present invention.

13 to 15 are views for explaining a second embodiment of a process of correcting a 3D image according to the present invention.

12 to 15, when the 3D image 310 is displayed on the display unit 151 (S210), the control unit 180 of the mobile terminal 100 drives the motion sensor 142, And detects whether a motion corresponding to the shaking motion of the user is generated in the mobile terminal 100 through the sensor 142 (S220).

At this time, if the motion of the mobile terminal 100 is detected through the motion sensor 142, the controller 180 again checks whether the amount of motion of the mobile terminal 100 is within a predetermined range.

If it is determined that the amount of movement of the mobile terminal 100 is within the preset range, the controller 180 determines that the movement of the mobile terminal 100 is a shaking motion of the user (S230) And drives the display moving unit 185 to correct the generated 3D image (S240). At this time, the preset range is the range of the motion amount in which the shaking motion is detected.

13 through 15, the controller 180 controls the display unit 151 through the display moving unit 185 so that the distortion generated in the 3D image 310 is canceled by the camera shake. (S250).

13, when the camera shake is detected on the upper side of the mobile terminal 100 through the motion sensor 142, the controller 180 controls the left and upper corners of the display unit 151, The display unit 151 is tilted and moved by the distance moved by the upper camera shake through the first and second display moving units 185a and 185b installed at the corners to correct the 3D image.

When the camera shake is detected on the underside of the mobile terminal 100 through the motion sensor 142, the controller 180 controls the operation of the third and the fourth sensors, which are provided on the left and right and right and bottom corners of the display unit 151, 4 display moving parts 185c and 185d to move the display part 151 in the opposite direction by the distance moved by the lower camera shake to correct the 3D image.

The control unit 180 controls the operation of the first and second display units 151 and 152 provided on the left and right corners and the left and right corners of the display unit 151 when the camera shake is detected on the left side of the mobile terminal 100 through the motion sensor 142. [ The display unit 151 is tilted and moved by the distance moved by the left camera shake through the three display moving units 185a and 185c to correct the 3D image.

When the camera shake is detected on the right side of the mobile terminal 100 through the motion sensor 142, the control unit 180 controls the first and second The display unit 151 is tilted by the distance moved by the right hand motion by moving the display unit 151 through the four display moving units 185b and 185d to correct the 3D image.

14, when the camera shake is detected in a direction in which the distance between the user and the front surface of the display unit 151 is reduced through the motion sensor 142, the controller 180 controls the display unit 151, 185b, 185c, and 185d provided on the upper, lower, left, and right corners of the display unit 151, respectively, to move the display unit 151 to the mobile terminal 100 ) To correct the 3D image.

15, when the camera shake is detected in a direction in which the distance between the front of the display unit 151 and the user is increased through the motion sensor 142, the controller 180 controls the display unit 151 185b, 185c, and 185d provided on the upper, lower, left, and right corners of the display unit 151, respectively, by a distance moved by the camera shake, 100) to correct the 3D image.

Meanwhile, the controller 180 corrects the 3D image 310 using the display moving unit 185 according to the processes of FIGS. 12 to 15, and then, through the motion sensor 142, It is possible to display the corrected 3D image 310 by switching to the state before the correction.

The second embodiment of the present invention has been described above in detail with reference to Figs. 12 to 15. Fig.

Hereinafter, a third embodiment of the present invention will be described in detail with reference to FIGS. 16 and 17. FIG.

[Third Embodiment]

A third embodiment of the present invention relates to a process of adjusting a position of the 3D image in a screen and correcting the 3D image when a display unit displaying the 3D image is tilted or moved due to a shaking motion of a user.

16 is a flowchart of a third embodiment illustrating a process of correcting a 3D image according to the present invention.

17 is a diagram for explaining a third embodiment of a process of correcting a 3D image according to the present invention.

16 and 17, when the 3D image 310 is displayed on the display unit 151 (S310), the controller 180 of the mobile terminal 100 drives the motion sensor 142, And detects whether a motion corresponding to the shaking motion of the user is generated in the mobile terminal 100 through the sensor 142 (S320).

At this time, if the motion of the mobile terminal 100 is detected through the motion sensor 142, the controller 180 again checks whether the amount of motion of the mobile terminal 100 is within a predetermined range.

If it is determined that the amount of movement of the mobile terminal 100 is within the predetermined range, the controller 180 determines that the movement of the mobile terminal 100 is a shaking motion of the user (S330) The position of the 3D image 310 is adjusted in the screen as shown in FIG. 17 so that the distortion generated in the 3D image 310 is canceled (S340).

Referring to FIG. 17, the controller 180 controls the 3D image 310 to move in the upward direction 510U in the upward direction 510U of the mobile terminal 100 through the motion sensor 142 And moves in the downward direction (510D) in the opposite direction by the distance moved by the motor.

When the camera unit 160 detects a camera-shake in the downward direction 510D of the mobile terminal 100 through the motion sensor 142, the control unit 180 controls the 3D image 310 in the downward direction 510D, To the upper direction 510U in the opposite direction.

The control unit 180 may control the 3D image 310 to be moved in the left direction 510L by the camera shake if the camera shake is detected in the left direction 510L of the mobile terminal 100 through the motion sensor 142, To the right direction 510R in the opposite direction.

The control unit 180 controls the operation of the 3D image 310 in the right direction 510R of the mobile terminal 100 through the motion sensor 142, (510L) in the opposite direction to the left.

The control unit 180 may control the 3D image 310 to be moved in the forward direction 510F when a motion in the forward direction 510F in which the distance between the front surface of the display unit 151 and the user is reduced is sensed through the motion sensor 142, (510F) Reduce to a ratio corresponding to the distance moved by the camera shake.

The control unit 180 may control the 3D image 310 to be displayed on the back of the display unit 151 through the motion sensor 142 when the user senses the backward direction 510B, Direction (510B) Magnify and correct at a rate corresponding to the distance moved by the camera shake.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer-readable medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . Also, the computer may include a control unit 180 of the terminal.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

The above-described mobile terminal and its control method are not limited to the configuration and method of the above-described embodiments, but the embodiments may be modified such that all or some of the embodiments are selectively And may be configured in combination.

100: mobile terminal 110: wireless communication unit
111: broadcast receiver 112: mobile communication module
113 wireless Internet module 114 short-range communication module
115: Position information module 120: A / V input section
121: camera 122: microphone
130: user input unit 140: sensing unit
141: proximity sensor 142: motion sensor
150: output unit 151: display unit
152: Audio output module 153: Alarm module
154: Haptic module 155: Projector module
160: memory 170: interface section
180: control unit 181: multimedia module
185: display moving unit 190: power supply unit

Claims (19)

A display unit for displaying three-dimensional (3D) images;
A motion sensor for detecting movement of the mobile terminal; And
And a controller for correcting and displaying the 3D image according to the motion of the mobile terminal measured through the motion sensor,
The motion sensor includes:
Wherein the display unit detects whether the display unit is tilted in a specific direction with respect to a front surface of the display unit,
Wherein,
A tilting angle of the display unit detected by the motion sensor, and displays first information indicating a tilted angle of the 3D image in the tilted 3D image, Display,
If the first information is selected, the tilted 3D image is displayed in a state before the tilting,
And displays second information indicating that the 3D image is tilted in the 3D image displayed before the tilting. The method according to claim 1,
First and second cameras for respectively capturing left and right eye images for 3D image generation,
Wherein the 3D image displayed on the display unit is generated by the first and second cameras. delete The method according to claim 1,
Wherein the control unit tilts the 3D image by the tilted angle in a direction opposite to a tilted angle of the display unit. delete The method according to claim 1,
Wherein the controller displays a user interface (UI) for inputting an angle for tilting the 3D image when the tilting of the display unit is detected through the motion sensor, and displays the 3D image according to a tilting angle input through the UI Tilting the mobile terminal. delete delete The method according to claim 1,
The motion sensor detects whether a motion corresponding to the hand tremor of the user is generated in the mobile terminal,
Wherein the controller corrects the 3D image according to the detected hand tremor when the hand tremor is detected through the motion sensor. 10. The method of claim 9,
Wherein the controller determines the movement of the mobile terminal as the hand trembling if the motion amount detected through the motion sensor is within a predetermined range. 10. The method of claim 9,
Wherein the controller displays the 3D image in a state before the correction if the hand tremor is not detected for a predetermined time through the motion sensor after correcting the 3D image. 10. The method of claim 9,
When the hand tremor is detected in at least one of the up / down / left / right directions with respect to the front surface of the display unit through the motion sensor, And corrects the position of the mobile terminal. 10. The method of claim 9,
Wherein the control unit reduces the 3D image by a ratio corresponding to a distance moved by the first tremble when a first tremor in a direction in which a distance between a user and a front surface of the display unit is detected through the motion sensor, And when the second tremor in the direction in which the distance between the user and the front surface of the display unit is detected through the motion sensor, the 3D image is enlarged and corrected at a ratio corresponding to the distance moved by the second tremor The mobile terminal comprising: delete The method according to claim 1,
And a display moving unit for moving the display unit in at least one direction,
The motion sensor detects whether a motion corresponding to the hand tremor of the user is generated in the mobile terminal,
Wherein the control unit adjusts the position of the display unit through the display moving unit such that the camera shake is canceled when the camera shake is detected through the motion sensor. 16. The method of claim 15,
When the hand movement is detected in at least one of the up / down / left / right directions with reference to the front face of the display unit through the motion sensor, the controller moves the display unit by the hand movement through the display moving unit As the distance between the mobile terminal and the mobile terminal. 16. The method of claim 15,
Wherein the control unit controls the display unit to move the display unit in the opposite direction by a distance moved by the first shake when the first shake in the direction in which the distance between the user and the front surface of the display unit is detected through the motion sensor, When the second movement of the display unit in the direction of increasing the distance between the front of the display unit and the user is sensed through the motion sensor, the display unit is moved through the display unit to the distance To the outside of the mobile terminal. delete Displaying three-dimensional (3D) images on a display unit;
Detecting whether the display unit is tilted in a specific direction with respect to a front surface of the display unit;
Tilting and displaying the 3D image based on the detected tilted angle of the display unit;
Displaying first information indicating a tilted angle of the 3D image and a tilted angle in the tilted and displayed 3D image;
Displaying the tilted 3D image in a state prior to the tilting when the first information is selected; And
And displaying second information indicating that the 3D image is tilted in the 3D image displayed before the tilting.

Images