KR101726224B1 - Mobile terminal and control method thereof - Google Patents

Abstract

A method of controlling a mobile terminal according to an embodiment of the present invention includes: capturing an image through a camera; Extracting a position of a specific object periodically from the captured image; And displaying a pointer at a corresponding location on the screen according to the location of the extracted specific object.

Description

[0001] MOBILE TERMINAL AND CONTROL METHOD THEREOF [0002]

The present invention relates to a mobile terminal and a control method thereof.

A terminal can be divided into a mobile terminal and a stationary terminal depending on whether the terminal is movable. Again, the mobile terminal may be divided into a handheld terminal and a vehicle mount terminal according to whether the user can carry the mobile phone directly.

Recently, as the service provided by the mobile terminal has diversified, it is considered to improve the structural part and / or the software part of the terminal.

An object of the present invention is to provide a mobile terminal and a control method of the mobile terminal capable of controlling the mobile terminal without direct contact.

According to another aspect of the present invention, there is provided a method of controlling a mobile terminal, comprising: capturing an image through a camera; Periodically extracting a position of a specific object from the photographed image; And displaying a pointer at a corresponding location on the screen according to the location of the extracted specific object.

A mobile terminal according to an embodiment of the present invention for realizing the above-mentioned problems includes a display unit; camera; And a controller for periodically extracting a position of a specific object from the image photographed through the camera and displaying a pointer at a corresponding position of the screen of the display unit according to the position of the extracted specific object.

The control method of the mobile terminal and the mobile terminal according to the present invention can perform a specific function of the mobile terminal without touching the mobile terminal. Accordingly, the user can perform a desired function of the mobile terminal even when the touch screen of the mobile terminal is difficult to touch, or selectively record / store information desired by the user in the captured image.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram illustrating a system associated with embodiments of the present invention.
2 is a block diagram of a mobile terminal according to an embodiment of the present invention;
FIGS. 3 to 4C illustrate operations of a mobile terminal according to an embodiment of the present invention;
5A and 5B are diagrams for explaining a method of extracting a position of a specific object according to an embodiment of the present invention.
6A and 6B are diagrams illustrating functions that may be performed according to the motion of a particular object, in accordance with one embodiment of the present invention.
7 is a view for explaining an input method using motion of a specific object according to an embodiment of the present invention;
8A to 8D illustrate a method of selecting a specific region in an image photographed according to movement of a specific object, according to an embodiment of the present invention.

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

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 is a block diagram of 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 module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may 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, 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 receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only And a Digital Broadcasting System (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 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 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.

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. [ Two or more cameras 121 may be provided depending on the use environment.

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.

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

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal 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. 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.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded 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 unit 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 unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

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 a 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. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a 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, SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an 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. 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 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. [

2A is a perspective view of an example of a mobile terminal or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has a bar-shaped terminal 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 camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

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. [

The user input unit 130 is operated to receive a command for controlling the operation of the portable 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 and may be employed in any manner as long as the user operates in a tactile manner.

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 To the touch recognition mode of the touch screen.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 may have a low pixel 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 camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 are additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output unit 152 (see FIG. 2A), and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for talking and the like, a broadcast signal reception antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable 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 also be of a light transmission type like the display unit 151. [ In this case, if the display unit 151 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on 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, embodiments related to the terminal configured as above will be described with reference to the accompanying drawings. The following embodiments can be used alone or in combination with each other. In addition, the embodiments described below may be used in combination with the above-described user interface (UI).

Embodiments disclosed in this document can be implemented in the mobile terminal 100 described with reference to Figs. 1 to 2B.

Hereinafter, a method of controlling a mobile terminal according to an embodiment of the present invention and operations of the mobile terminal 100 for implementing the method will be described in detail with reference to FIGS. 3 to 8D.

FIGS. 3 to 4C illustrate operations of a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 3, the control unit 180 photographs an image through the camera 121. The control unit 180 recognizes the specific object 200 from the image periodically photographed. Here, the specific object is used as a tool for controlling the mobile terminal 100 and includes a finger, a pen, and the like. The control unit 180 may extract a specific object from the image using the registered object property. The pre-registered object properties may include object shape, color, object identification information, and the like. A method of extracting an object from an image and confirming whether the extracted object is composed of a specific shape or a specific color is a well-known technique, which is beyond the scope of the present invention, and thus a detailed description thereof will be omitted.

In addition, the controller 180 extracts a specific point 201 from a specific object recognized from the image photographed through the camera 121. For example, we extract the vertex of an object, the center point of an object, and so on. Further, the extracted specific point is matched to the position coordinate of the screen of the mobile terminal 100 based on the position of the extracted specific point in the image. Then, it performs a predetermined function based on the movement of the specific point, that is, the change of the position coordinate where the specific point is matched.

In addition, the controller 180 can display the motion of a specific object extracted from the image on the screen. There are many ways to display the movement of a specific object on the screen.

For example, the control unit 180 may display a specific object extracted from the image on the screen of the mobile terminal 100. The control unit 180 extracts a specific object satisfying the registered object property from the image photographed through the camera 121 using the image recognition algorithm. Then, the extracted object is displayed on the screen of the mobile terminal 100. FIGS. 4A to 4C illustrate examples of displaying the extracted specific object on the screen of the mobile terminal 100. FIG.

Referring to FIG. 4A, at least one widget is displayed on the widget screen 301 of the mobile terminal 100. In addition, the pointer 302 is displayed at a corresponding position of the widget screen 301 of the mobile terminal 100 according to the position of the finger extracted from the image captured through the camera 121. The control unit 180 periodically tracks the position of the finger and moves the pointer 302 to a corresponding position according to the movement of the finger. That is, the controller 180 displays the pointer in synchronization with the movement of the finger, and performs a predetermined function according to the movement of the pointer (or finger). The widget screen is described as an example, and various other screens can be displayed. For example, a drawing input screen of an application program for drawing a picture according to the movement of a pointer, an application for inputting a character by recognizing a handwriting, and the like may be displayed.

Referring to FIG. 4B, an image photographed through the camera 121 is directly displayed on the display unit 151. FIG. Also in this case, the controller 180 periodically tracks the position of the finger and performs a predetermined function according to the movement of the finger. For example, a function of selecting a specific region of an image photographed through the camera 121, a function of selecting a specific object to be photographed through the camera 121, and the like can be performed.

4C, the image 305 of the finger extracted from the image photographed through the camera 121 is superimposed on the widget screen 301 of the mobile terminal 100. On the other hand, May control the transparency of the finger image 305 so as to allow the user to confirm what the item overlapped with the finger 305 is. On the other hand, the control unit 180 displays the widget screen 301 in a superimposed manner on the finger image 305, and controls the transparency of the item so that the user can confirm what item is overlaid on the finger 305 You may.

5A and 5B are diagrams for explaining a method of extracting a position of a specific object according to an embodiment of the present invention. In the following description, a specific object is described by taking the stylus pen 420 as an example. It is also assumed that, as shown in Figs. 5A and 5B, an arbitrary object, for example, a portrait photograph 400 is photographed through the camera 121. Fig. The control unit 180 displays the image 410 photographed through the camera 121 on the screen.

5A, the position (X, Y, Z) of the stylus pen 420 corresponds to the position of the camera 121, that is, the position (X, Y) And the distance (Z) with respect to the camera 121. The control unit 180 recognizes the stylus pen 420 on the photographed image and tracks the position of the stylus pen 420 recognized in the image 410 periodically photographed. Accordingly, regardless of the surrounding objects of the stylus pen 420, a pointer or the like is displayed at a corresponding position on the screen according to the position with respect to the camera 121.

5B, the position (x, y, z) of the stylus pen 420 is located at a position with respect to a specific object photographed through the camera 121, that is, a portrait image 400 photographed through the camera 121 (X, y) and the distance (z) from the portrait 400 to the portrait (x, y). The control unit 180 selects a reference object from the photographed image. The controller 180 recognizes the stylus pen 420 on the photographed image and tracks the position of the stylus pen 420 with respect to the reference object in the image 410 periodically photographed. Therefore, a predetermined function, for example, a pointer or the like is displayed at a corresponding position on the screen in accordance with the position of the reference object regardless of the photographing angle and the distance of the camera 121. [

6A and 6B are diagrams illustrating functions that can be performed according to the movement of a specific object, according to an embodiment of the present invention.

As shown in FIGS. 6A and 6B, the controller 180 may continuously track the position of a specific object, and perform a predetermined function according to the movement. For example, you can display the trajectory of a specific object on the screen. Accordingly, the user can draw a picture as shown in FIG. 6A or input a written body as shown in FIG. 6B. The method of tracking the position of a specific object is the same as the method described previously.

Also, referring to FIG. 6A, the trajectory of a specific object can be discontinuously displayed on the screen. For example, if a particular object moves along a trajectory 501, 502, 503, discontinuously displays some of the trajectories 501, 503. To this end, when a predetermined menu key or the like is input, the control unit 180 tracks and displays the movement of a specific object, and stops tracking and displaying the movement of a specific object when a predetermined menu key is input. In addition, if the specific object does not move for a predetermined time or longer, the trajectory of the specific object starts to be displayed, and if the specific object does not move again for a predetermined time or longer, the trajectory display of the specific object can be stopped.

7 is a view for explaining an input method using motion of a specific object according to an embodiment of the present invention.

Referring to FIG. 7, a trajectory of a specific object can be tracked and displayed only when a specific object is in contact with a reference object within a predetermined distance from a reference object (hereinafter referred to as a reference object). To this end, the position for the reference object can be used, as in the method described with reference to Figure 5B.

The control unit 180 recognizes a specific object in the captured image and tracks the position of the specific object. In addition, the control unit 180 determines whether a specific object is in contact with the reference object. (601, 605), and performs a predetermined function such as displaying a pointer at a corresponding position on the screen in accordance with the position or motion of the specific object. If it is not contacted (602, 603, 604), the control unit 180 determines that there is no input. Therefore, it can be used similarly to inputting a drag or the like using the touch pad.

8A to 8D are diagrams illustrating a method of selecting a specific region in an image taken according to a motion of a specific object, according to an embodiment of the present invention.

8A to 8C, the control unit 180 displays the image photographed through the camera 121 on the display unit 151 in real time. For example, as shown in FIGS. 8A to 8C, it is assumed that the user is shooting a monitor on which a web page is displayed. A web page photographed through the camera 121 is displayed through the display unit 151. [ Thereafter, when the user selects a specific area of the web page displayed on the monitor with the stylus pen, the controller 180 recognizes the stylus pen and tracks the position of the stylus pen according to the method described above. In addition, the controller 180 selects a specific region of the image to be photographed according to the movement of the stylus pen. Then, the controller 180 extracts information of the selected region from the photographed image.

8A, when the stylus pen is dragged on the text of the web page displayed on the monitor, the control unit 180 extracts the trajectory of the stylus pen in the above-described manner, and extracts the trajectory corresponding to the trajectory extracted from the captured image Identify the selection area. In addition, the control unit 180 identifies the information included in the selected area, and extracts the text of the selected area from the photographed image if the selected area includes text. And then stores it in the memory 160.

8B, when the stylus pen forms a closed curve as it passes around the text of the web page displayed on the monitor, the control unit 180 identifies the selected region corresponding to the closed curve in the image photographed in the above-described manner. In addition, the control unit 180 identifies the information included in the selected area, and extracts the text of the selected area from the photographed image if the selected area includes text. And then stores it in the memory 160.

Referring to FIG. 8C, as described in FIGS. 8A and 8B, the controller 180 identifies the information included in the selected region, and if the selected region includes the image, extracts the image of the selected region from the photographed image . And then stores it in the memory 160.

Referring to FIG. 8D, the control unit 180 displays the image photographed through the camera 121 on the display unit 151 in real time. For example, as shown in FIG. 8D, it is assumed that the user is shooting a specific person. An image of a person photographed through the camera 121 is displayed through the display unit 151. [ Thereafter, when the user selects a specific area of the person with the stylus pen, the controller 180 recognizes the stylus pen and tracks the position thereof according to the method described above. In addition, the controller 180 selects a specific region of the image to be photographed according to the movement of the stylus pen. Then, the controller 180 extracts information of the selected region 200 from the photographed image. When the distance between the camera 121 and the object (person) is long, or the object is not plane, the stylus may not directly contact the object. Further, the position of the stylus pen may be a position with respect to the camera 121 or a position with respect to an object (person).

According to the above-described embodiments, it is possible for a user to perform a specific function of the mobile terminal 100 without touching the mobile terminal 100. [ Accordingly, the user can perform a desired function of the mobile terminal 100 or selectively photograph / store information desired by the user in a photographed image even in a state where it is difficult for the user to touch the touch screen of the mobile terminal 100.

Further, according to an embodiment of the present invention, the above-described method can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

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.

In the foregoing, preferred embodiments of the present invention have been described with reference to the accompanying drawings.

Here, the terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, but should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

100: mobile terminal 110: wireless communication unit
120: A / V input unit 130: user input unit
140: sensing unit 150: output unit
160: memory 170: interface section
180: control unit 190: power supply unit

Claims (8)

Claim 1 has been abandoned due to the setting registration fee. Capturing an image through a camera;
Selecting a reference object as a reference;
Recognizing a specific object from the photographed image;
Extracting a position of the specific object periodically from the captured image; And
And displaying a pointer at a corresponding location on the screen according to the location of the extracted specific object when the location of the extracted specific object is within a predetermined distance from the reference object. Claim 2 has been abandoned due to the setting registration fee. The method according to claim 1,
And extracting character or image information from the motion of the specific object. Claim 3 has been abandoned due to the setting registration fee. The method according to claim 1,
Displaying the photographed image on the screen;
Selecting a part of the image to be photographed according to the motion of the specific object; And
And extracting information from the image of the selected region. Claim 4 has been abandoned due to the setting registration fee. The method of claim 1,
Wherein the object is an object around the specific object among images captured by the camera or the camera. A display unit;
camera; And
The method includes: selecting a reference object as a reference; recognizing a specific object from an image captured through the camera; periodically extracting a position of the specific object from the captured image; And displaying a pointer at a corresponding position on the screen of the display unit according to the position of the extracted specific object when the distance is within a predetermined distance from the specific object. 6. The apparatus of claim 5, wherein the control unit
And extracts character or image information from the motion of the specific object. 6. The apparatus of claim 5, wherein the control unit
Wherein the display unit displays an image photographed through the camera on the screen, selects a region of the image to be photographed according to the movement of the specific object, and extracts information from the image of the selected region. 6. The method of claim 5,
And an object around the specific object among images captured through the camera or the camera.

Images