KR20160007048A - Mobile terminal and method for controlling the same - Google Patents

Abstract

A mobile terminal and a control method thereof are disclosed. According to the present invention, the mobile terminal and the control method thereof comprise: a display; at least one optical lens which changes an optical path of light generated in the display at a fixed refractive index; a prism which reflects the light, which passes the at least one optical lens, at least once to guide the light to a target spot; a variable lens which is located on the optical path of the light between the display and the target spot and which changes a refractive index of at least one portion by a control signal so as to change an optical path of at least a portion of the light; and a control unit which generates the control signal. According to the present invention, the optical path of the light, which is generated in the display, can be changed by including the variable lens, which can change a refractive index.

Description

[0001] MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME [0002] BACKGROUND OF THE INVENTION [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device including a variable lens capable of changing a refractive index and capable of changing a light path of light generated in a display, and a control method thereof.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

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.

Particularly, researches on electronic devices worn by users have been conducted in recent years, and wearable electronic devices that can be effectively used not only in a wear state but also in a non-wear state are being studied.

The present invention is directed to solving the above-mentioned problems and other problems. It is another object of the present invention to provide an electronic device including a variable lens capable of changing the refractive index and capable of changing the light path of light generated in the display, and a control method thereof.

According to an aspect of the present invention, there is provided a display comprising: a display; At least one optical lens for changing the optical path of the light generated in the display with a fixed index of refraction; A prism that reflects the light having passed through the at least one optical lens at least once and guides the light to a target point; A variable lens located on an optical path of the light between the display and the target point and changing a refractive index of at least a part of the optical path by a control signal to change an optical path of at least a part of the light; And a control unit for generating the control signal.

The variable lens may be positioned between the optical lens and the prism in the optical path.

The controller may further include a sensor for detecting whether or not the electronic device is worn. The controller may generate the control signal for changing the refractive index of the variable lens based on whether the electronic device is worn by the sensor.

The control unit may generate the control signal that changes the optical path so that an image is displayed on a seating surface on which the electronic device is placed when the electronic device is in a non-wearing state.

The control unit may determine an area for displaying an image based on at least one of a hue and a material of a seating surface on which the electronic device is placed when the electronic device is in a non-worn state.

Wherein the variable lens includes a first mode in which the light passing through the variable lens is diverged, a second mode in which the light passing through the variable lens is converged, And a fourth mode in which the light notifying the variable lens is refracted in a specific direction.

The prism may further include a reflector that reflects the light traveling in the prism to the outside of the prism.

According to another aspect of the present invention, there is provided a method of controlling an electronic device, the method comprising: sensing whether an electronic device is worn; Forming an optical path toward the wearer's eyeball while maintaining the predetermined light path when the electronic device is worn; And changing the optical path so that an image is displayed on a seating surface on which the electronic device is placed by changing the predetermined optical path when the electronic device is not worn.

The step of changing the optical path may include determining a position at which the image is to be displayed, and changing a refractive index of the variable lens so that the image is displayed at the determined position.

The step of changing the optical path may include changing an area for displaying the image based on at least one of a hue and a material of the seating surface.

Effects of the electronic device and its control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, there is an advantage that the optical path of the light generated in the display can be changed by including a variable lens that can change the refractive index.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

1A is a block diagram illustrating a mobile terminal according to the present invention.
1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
2 is a perspective view showing an example of a conventional glass type mobile terminal.
FIG. 3 is a view showing the principle of image formation when the electronic device of FIG. 2 is worn.
FIG. 4 is a view showing whether an image is formed when the electronic device of FIG. 2 is not worn.
5 is a diagram illustrating variable lens operation of an electronic device according to an embodiment of the present invention.
FIG. 6 and FIG. 7 are views showing the principle of image display when the electronic device is worn or not worn according to an embodiment of the present invention.
8 and 9 are views showing the operation of the electronic device when the electronic device is not worn according to an embodiment of the present invention.
10 and 11 are views showing the operation of the electronic device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. 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. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

1A to 1C are block diagrams for explaining a mobile terminal according to the present invention, and FIGS. 1B and 1C are conceptual diagrams showing an example of a mobile terminal according to the present invention in different directions.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, ), And the like. The components shown in FIG. 1A are not essential for implementing a mobile terminal, so that the mobile terminal described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be connected between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and another mobile terminal 100 or between the mobile terminal 100 and the external server 100. [ Lt; RTI ID = 0.0 > wireless < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the mobile terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement a method of operation, control, or control of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170. [

Hereinafter, the various components of the mobile terminal 100 will be described in detail with reference to FIG. 1A.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 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. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

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. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 is connected to the mobile terminal 100 and the wireless communication system through the wireless area networks, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And the other mobile terminal 100 (or the external server). The short-range wireless communication network may be a short-range wireless personal area network.

Here, the other mobile terminal 100 may be a wearable device (e.g., a smartwatch, a smart glass, etc.) capable of interchanging data with the mobile terminal 100 according to the present invention (smart glass), HMD (head mounted display)). The short range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. [ If the detected wearable device is a device authenticated to communicate with the mobile terminal 100 according to the present invention, the control unit 180 may transmit at least a part of the data processed by the mobile terminal 100 to the short- 114 to the wearable device. Therefore, the user of the wearable device can use the data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a telephone is received in the mobile terminal 100, the user performs a telephone conversation via the wearable device, or when a message is received in the mobile terminal 100, It is possible to check the message.

The position information module 115 is a module for obtaining the position (or current position) of the mobile terminal, and a representative example thereof is a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the mobile terminal utilizes the GPS module, it can acquire the position of the mobile terminal by using a signal transmitted from the GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, it can acquire the position of the mobile terminal based on information of a wireless access point (AP) that transmits or receives the wireless signal with the Wi-Fi module. Optionally, the location information module 115 may perform any of the other functions of the wireless communication unit 110 to obtain data relating to the location of the mobile terminal, in addition or alternatively. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, the input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, Or a plurality of cameras 121 may be provided. 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 may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the mobile terminal 100 may be arranged to have a matrix structure and various angles or foci may be provided to the mobile terminal 100 through the camera 121 having the matrix structure A plurality of pieces of image information can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or a running application program) being executed in the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user and when the information is inputted through the user input unit 123, the control unit 180 can control the operation of the mobile terminal 100 to correspond to the input information . The user input unit 123 may include a mechanical input means (or a mechanical key such as a button located on the front, rear or side of the mobile terminal 100, a dome switch, a jog wheel, Jog switches, etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, The virtual key or the visual key can be displayed on the touch screen with various forms. For example, the virtual key or the visual key can be displayed on the touch screen, ), An icon, a video, or a combination thereof.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the mobile terminal 100 or may perform data processing, function or operation related to the application program installed in the mobile terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

First, the proximity sensor 141 refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. The proximity sensor 141 may be disposed in the inner area of the mobile terminal or in proximity to the touch screen, which is covered by the touch screen.

Examples of the proximity sensor 141 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. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as "proximity touch & The act of actually touching an object on the screen is called a "contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect 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, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 can control the mobile terminal 100 such that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a touch touch .

The touch sensor uses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, Detection.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated in a specific portion to an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when 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. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to the current state of the mobile terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor can be laminated to the display element, which is adapted to scan the movement of the object to be detected proximate to the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

Also, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 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 unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 may be configured to perform various functions such as 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, 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 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. The haptic module 153 may include two or more haptic modules 153 according to the configuration of the mobile terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the mobile terminal 100. Examples of events that occur in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output from the light output unit 154 is implemented as the mobile terminal emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the mobile terminal detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data in the mobile terminal 100 to an external device. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

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 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 interface unit 160. [

The interface unit 160 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, And various command signals may be transmitted to the mobile terminal 100. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 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 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the mobile terminal 100. [ For example, when the state of the mobile terminal meets a set condition, the control unit 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the mobile terminal 100 according to the present invention.

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 power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

In addition, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 through which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

Referring to FIGS. 1B and 1C, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . A description of a particular type of mobile terminal, although relevant to a particular type of mobile terminal, is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, and the like) that forms an appearance. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The mobile terminal 100 may be configured such that one case provides the internal space, unlike the above example in which a plurality of cases provide an internal space for accommodating various electronic components. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear side can be realized.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit (not shown) A second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, And a mobile terminal 100 having a second sound output unit 152b and a second camera 121b disposed on a rear surface thereof.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the mobile terminal 100 or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information .

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, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily operated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

2 is a perspective view showing an example of a conventional glass type mobile terminal.

The glass-type mobile terminal 100 is configured to be worn on the head of a human body, and a frame (a case, a housing, etc.) for the mobile terminal 100 may be provided. The frame portion may be formed of a flexible material to facilitate wearing. This figure illustrates that the frame portion includes a first frame 101 and a second frame 102 of different materials. In general, the mobile terminal 100 may include features of the mobile terminal 100 of Figures 1A-1C or similar features.

The frame portion is supported on the head portion, and a space for mounting various components is provided. As shown in the figure, electronic parts such as the control module 180, the sound output module 452 and the like may be mounted on the frame part. Further, a lens 403 covering at least one of the left eye and the right eye may be detachably mounted on the frame portion.

The control module 180 controls various electronic components included in the mobile terminal 100. The control module 180 can be understood as a configuration corresponding to the control unit 180 described above. This figure illustrates that the control module 180 is installed in the frame portion on one side of the head. However, the position of the control module 180 is not limited thereto.

The prism 206 can reflect the? Generated at the display (202 in FIG. 3) at least once to guide it to the destination point. That is, the image can be projected by the user's eyes by changing the light path of the light so that the image can be directly displayed in front of the user's eyes.

An image output through the prism 206 to the user's eyes may be overlapped with the general field of view. The mobile terminal 100 can provide an Augmented Reality (AR) in which a virtual image is superimposed on a real image or a background and displayed as a single image using the display characteristics.

The camera 121 is disposed adjacent to at least one of the left eye and the right eye, and is configured to photograph a forward image. Since the camera 121 is positioned adjacent to the eyes, the camera 121 can acquire a scene viewed by the user as an image.

Although the camera 121 is provided in the control module 180 in this figure, it is not limited thereto. The camera 121 may be installed in the frame unit or may be provided in a plurality of ways to acquire stereoscopic images.

The glass-type mobile terminal 100 may include user input units 123a and 123b operated to receive control commands. The user input units 123a and 123b can be employed in any tactile manner, such as a touch or a push, in a tactile manner. In this drawing, it is illustrated that the frame unit and the control module 180 are provided with user input units 123a and 123b of a push and touch input method, respectively.

In addition, the glass-type mobile terminal 100 may be provided with a microphone (not shown) for receiving sound and processing the sound as electrical voice data and an acoustic output module 152 for outputting sound. The sound output module 452 may be configured to transmit sound in a general sound output mode or a bone conduction mode. When the sound output module 152 is implemented in a bone conduction manner, when the user wears the mobile terminal 100, the sound output module 152 is brought into close contact with the head and vibrates the skull to transmit sound.

Hereinafter, embodiments related to a control method that can be implemented in a mobile terminal configured as above will be described with reference to the accompanying drawings. 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.

FIG. 3 is a view showing the principle of image formation when the electronic device of FIG. 2 is worn.

3 (a), the conventional glass-type electronic device 100 may be in the form of glasses worn on the head H of the user. The user can recognize the image generated by the image generating unit 200 of the electronic device 100 through the eyes E. [

As shown in FIG. 3 (b), the light generated in the display 202 can be transmitted to the user through a constant path.

The display 202 may display the first image I1. The first image I1 displayed on the display 202 may be an image that the image generating unit 200 wants to transmit to the user.

The optical lens 204 can change the optical path of the first image I1 displayed on the display 202. [ For example, the optical lens 204 may be composed of at least one concave lens and / or convex lens.

The lens of the optical lens 204 may be configured to form an optical path through which an image can be formed on the retina RE of the user's eye E. [ That is, in consideration of a typical user's lens EL serving as a convex lens, at least one concave surface is formed so that light passing through the lens EL can be formed on the retina RE to form the second image I2 Lens and / or convex lens may be combined.

The prism 206 is capable of guiding the refracted light at least once through the optical lens 204 to the target point. Light that has passed through the optical lens 204 and is incident on the prism 206 may travel along the path that is totally reflected in the prism 206 and may be moved to the reflection plate 208.

The reflection plate 208 can reflect the light moved along the prism 206 in the eye E direction. The reflection plate 208 may be configured as a half mirror.

The light reflected by the reflection plate 208 forms the first and second optical paths L1 and L2 and can be directed to the lens EL. Considering the lens EL serving as a convex lens, the first and second optical paths L1 and L2 may be in a divergent form. That is, the divergent first and second optical paths L1 and L2 can be changed into third and fourth optical paths L3 and L4 of converging shape through the lens EL. The converging third and fourth optical paths L3 and L4 are formed on the retina RE and can form an image. That is, it means that a second image I2 substantially identical to the first image I1 can be generated.

FIG. 4 is a view showing whether an image is formed when the electronic device of FIG. 2 is not worn.

As shown in the figure, when the electronic device 100 is not worn, a virtual image may be generated and the user may not be able to recognize the image.

The first image I1 displayed on the display 202 may be transmitted through the optical lens 204, the prism 206, and the reflector 208. [ The path of the light passing through the reflection plate 208 may be the first and second optical paths L1 and L2. The first and second optical paths L1 and L2 may be divergent. The divergent first and second light paths L1 and L2 may be paths that presuppose the presence of the lens EL as described above. Therefore, when the electronic device 100 is not worn, the third image I3 of the bottom surface GR can be a virtual image due to the absence of the lens EL within a predetermined distance from the prism 206. [ Therefore, there may be a problem that the third image I3 can not be visually recognized.

5 is a diagram illustrating variable lens operation of an electronic device according to an embodiment of the present invention.

As shown in the figure, the electronic device 100 according to an embodiment of the present invention may include a variable lens 210.

As shown in FIGS. 5A to 5C, the variable lens 210 may perform different operations depending on the applied voltage and / or current. For example, when the voltage Va is applied, the optical path of the incident light RI and the output light RO may be the same. At this time, the variable lens 210 may be disposed on the side of the incident light RI, All of which may be of a flat shape.

When the voltage is changed to Vb, the side of the outgoing light RO can be changed convexly. When the side of the outgoing light RO changes convexly, the outgoing light RO can be refracted in the direction of convergence. That is, it means that the variable lens 210 can be operated as a convex lens.

When the voltage is changed to Vc, the side of the emitted light RO can be concavely changed. When the side of the outgoing light RO changes concave, the outgoing light RO can be refracted in the diverging direction. That is, it means that the variable lens 210 can be operated as a concave lens.

The voltage Vb may be greater than Va and the voltage Vc may be greater than Vb. That is, it means that there is a certain correlation with the applied voltage.

As shown in Fig. 5 (d), the variable lens 210 may be changed into an atypical state. For example, it means that the emitted light RO can be refracted in a specific direction.

The variable lens 210 may be filled with a substantially transparent liquid. The liquid may be electrolytic. The electrolytic liquid can change its shape depending on the applied voltage. When the shape of the liquid is changed, the optical path passing through the liquid can be changed.

The property change of the variable lens 210 according to the change of the voltage can be substantially simultaneously performed according to the application of the voltage. Accordingly, the variable lens 210 can be rapidly changed depending on whether the electronic device 100 is worn or not.

The property change of the variable lens 210 can be made by at least one of a change in the applied voltage, a change in the applied current, and a change in the applied control signal. For example, it means that the variable lens 210 can be changed from the attribute of the convex lens to the attribute of the concave lens in accordance with the change of the applied voltage. Alternatively, the property of the variable lens 210 may be changed by a combination of voltage, current, and control signals.

FIG. 6 and FIG. 7 are views showing the principle of image display when the electronic device is worn or not worn according to an embodiment of the present invention.

As shown in these drawings, the electronic device 100 according to the embodiment of the present invention can realize a real image even in a state in which the electronic device 100 is worn, as well as in a non-worn state.

As shown in Fig. 6, the first image I1 may be displayed on the display 202 while the electronic device 100 is worn.

The control unit 180 can sense wearing of the electronic device 100. [ For example, it means that the wear of the electronic device 100 can be sensed through the contact sensor mounted on the electronic device 100. Alternatively, it is possible to detect whether the electronic device 100 is worn through the proximity sensor and / or the touch sensor mounted on the electronic device 100. A touch sensor, a proximity sensor, and / or a touch sensor may be provided on a nose contact with the user's nose, a frame touching the head of a user's ear portion, and the like. Alternatively, an acceleration sensor or the like may be used to detect movement of the user to determine whether or not the user is wearing the apparatus.

The control unit 180 may determine that the user wears the electronic device 100 when at least one of the detection of user movement, the detection of contact through the contact sensor of the nose support, etc. is detected for a predetermined time or longer.

If the controller 180 determines that the electronic device 100 is worn, the controller 180 can change the attribute of the variable lens 210 to a specific state. For example, it means that the fifth and sixth optical paths I5 and I6 incident on the variable lens 210 can be outputted to the seventh and eighth optical paths I7 and I8 without being changed. That is, it means that the change of the optical path due to the variable lens 210 can be prevented.

The change of the optical path due to the variable lens 210 does not occur, so that the optical path can be formed to have no variable lens 210. The light passing through the variable lens 210 and the prism 206 forms the first and second optical paths L1 and L2 and is incident on the lens EL so that the second image I2 ) Can be formed.

As shown in Fig. 7, the first image I2 may be displayed on the display 202 without the electronic device 100 being worn.

The control unit 180 can change the attribute of the variable lens 210 to correspond to the attribute of the variable lens 210. For example, when the control unit 180 determines that the electronic device 100 is not worn, (210).

When the property of the variable lens 210 is changed, the seventh and eighth light paths L7 and L8 passing through the variable lens can be changed. For example, it can be changed into a converging form. When the seventh and eighth optical paths L7 and L8 are changed, the first and second optical paths L1 and L2, which pass through the prism 206 and the reflecting plate 208 and are directed to the bottom surface GR, . For example, it means that the first and second optical paths L1 and L2 can be changed to make a real image.

When the first and second optical paths L1 and L2 are changed and the real image can be formed, a fourth image I4 may be generated on the bottom surface GR. Therefore, the user can observe the image by the control unit 180 even when the electronic device 100 is not worn.

The fourth image 14 can be changed depending on the state of the bottom surface GR and the like. For example, the controller 180 may change the size of the fourth image I4 according to the distance to the floor GR, the distance to the user, and the like. Alternatively, the controller 180 may change at least one of the color and the display position of the fourth image I4 according to the state of the floor GR.

8 and 9 are views showing the operation of the electronic device when the electronic device is not worn according to an embodiment of the present invention.

As shown in these figures, the electronic device 100 according to the embodiment of the present invention can effectively transmit information to the upper person even when the electronic device 100 is not put on the floor GR.

As shown in Fig. 8 (a), the electronic device 100 can display the image IM in the first area A1. For example, it means that an image IM indicating that a new message has been received can be displayed in the first area A1.

As shown in FIG. 8 (b), the electronic device 100 can display the image IM in the second area A2. The second area A2 may be an optional display area. For example, when it is determined that it is not preferable to display the image IM in the first area A1, the control unit 180 may display the image IM in the second area A2 instead of the first area A1 IM) can be displayed. The case where the display of the image IM is not preferable may be related to the color, material, etc. of the bottom surface GR corresponding to the first area A1. For example, when the bottom surface GR corresponding to the first area A1 is excessively bright or dark and it is difficult to identify the displayed image IM, the second area A2 is used instead of the first area A1, The user can display the image IM on the display unit.

As shown in FIG. 9, the electronic device 100 according to an embodiment of the present invention can adjust the angle of light emitted from the prism 206. For example, in the third direction D3 through the second direction D2 from the first direction D1, which allows the image to be irradiated on the nearest bottom surface GR with respect to the prism 206, The image can be examined at various angles. The irradiation angle adjustment to the first to third directions D1 to D3 may be performed by the operation of the variable lens 210. [ That is, it means that the variable lens 210 changes to an irregular state and the irradiation direction of the image can be changed.

10 and 11 are views showing the operation of the electronic device according to an embodiment of the present invention.

As shown in these drawings, the controller 180 of the electronic device 100 according to the embodiment of the present invention can perform the step of detecting the current state of the electronic device 100 (S10).

The electronic device 100 may be a wearable device worn on the user's body. In particular, it may be a spectacle-type wafer device.

The electronic device 100 may be in a wear or non-wear state. For example, it may mean that the electronic device 100 is placed on the floor for charging or the like.

It is determined whether the electronic device 100 is worn (S20), and if it is worn, a step S30 may be performed to maintain the set optical path.

The optical path may be a default state in which the electronic device 100 is worn. Accordingly, in order to maintain the set optical path, the control unit 180 can apply a control signal to the variable lens 210 so that the paths of the incident light and the emitted light to the variable lens 210 do not change.

If the electronic device 100 is not worn, step S40 may be performed to change the set optical path.

When the electronic device 100 is not worn, if the optical path is maintained as in the case of wearing, a virtual image may be generated and the user may not be able to recognize the image. Accordingly, when it is determined that the lens 210 is not worn, the control unit 180 may apply a control signal to the variable lens 210 so that the path of the emitted light to the incident light of the variable lens 210 may be changed. When the optical path changes, an actual image may be formed on the bottom surface.

The step of changing the optical path (S40) may include a step (S42) of determining the irradiation position of the image.

The control unit 180 can determine at which position on the floor the image is to be irradiated. The irradiation position can be set to a specific position with a default value. For example, it may be set to irradiate an image to a specific area a certain distance away from the electronic device 100. [

The control unit 180 can detect the state of the specific area. For example, it means that a color or material of a specific area can be detected by using a camera or the like. Based on the sensed result, the control unit 180 can determine whether or not it is appropriate to irradiate the image to the specific area. If the specific area is not suitable for representing the image, the control section 180 can determine the other area as the image irradiation position.

And step S44 of applying a control signal to the variable lens based on the determined irradiation position can be proceeded.

The control unit 180 can change the position at which the image is projected by applying a control signal to the variable lens. For example, this means that the position at which the image is projected can be changed by changing the projection angle.

The present invention described above can be implemented 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 a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). In addition, 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.

100: electronic device 110: wireless communication unit
120: Input unit
140: sensing unit 150: output unit
160: interface unit 170: memory
180: control unit 190: power supply unit

Claims (10)

display;
At least one optical lens for changing the optical path of the light generated in the display with a fixed index of refraction;
A prism that reflects the light having passed through the at least one optical lens at least once and guides the light to a target point;
A variable lens located on an optical path of the light between the display and the target point and changing a refractive index of at least a part of the optical path by a control signal to change an optical path of at least a part of the light; And
And a control unit for generating the control signal. The method according to claim 1,
The variable lens includes:
And an optical path between the optical lens and the prism. The method according to claim 1,
Further comprising a sensor for detecting whether the electronic device is worn,
Wherein,
And generates the control signal for changing the refractive index of the variable lens based on whether the sensor senses the wear state or not. The method of claim 3,
Wherein,
And changes the optical path so that an image is displayed on a seating surface on which the electronic device is placed when the electronic device is in a non-wearing state. The method of claim 3,
Wherein,
And when the electronic device is in a non-wearing state, determines an area for displaying an image based on at least one of a color and a material of a seating surface on which the electronic device is placed. The method according to claim 1,
The variable lens includes:
A first mode in which the light passing through the variable lens is diverged,
A second mode in which the light passing through the variable lens is converged,
A third mode in which there is no change in the optical path before and after the passage of the variable lens,
And a fourth mode in which the light notifying the variable lens is refracted in a specific direction. The method according to claim 1,
The prism
And a reflector that reflects the light traveling in the prism to the outside of the prism. Detecting whether the electronic device is worn;
Forming an optical path toward the wearer's eyeball while maintaining the predetermined light path when the electronic device is worn; And
And changing the optical path so that an image is displayed on a seating surface on which the electronic device is placed by changing the predetermined optical path when the electronic device is not worn. 9. The method of claim 8,
Wherein the step of changing the optical path comprises:
Determining a location to display the image;
And changing the refractive index of the variable lens so that the image is displayed at the determined position. 9. The method of claim 8,
Wherein the step of changing the optical path comprises:
And changing an area in which the image is to be displayed based on at least one of a color and a material of the seating surface.

Images