KR102211476B1 - Mobile terminal and method for controlling the same - Google Patents

Abstract

Disclosed are a mobile terminal and a control method thereof. A mobile terminal and a control method thereof according to the present invention include: a display; At least one optical lens for changing an optical path of light generated by the display with a fixed refractive index; A prism reflecting the light passing through the at least one optical lens at least once and guiding it to a destination point; A variable lens positioned on the light path between the display and the destination point, and changing at least a part of the light path by changing at least a part of the refractive index according to a control signal; And a control unit generating the control signal. According to the present invention, the optical path of light generated by the display can be changed by including a variable lens capable of changing a refractive index.

Description

Electronic device and its control method {MOBILE TERMINAL AND METHOD FOR CONTROLLING THE SAME}

The present invention relates to an electronic device capable of changing an optical path of light generated by a display, including a variable lens capable of changing a refractive index, and a control method thereof.

Terminals can be divided into mobile/portable terminals and stationary terminals depending on whether they can be moved. Again, mobile terminals can be divided into handheld terminals and vehicle mounted terminals depending on whether the user can directly carry them.

The functions of mobile terminals are diversifying. For example, there are functions of data and voice communication, taking pictures and videos through a camera, recording voice, playing music files through a speaker system, and outputting images or videos to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals providing visual content such as broadcasting and video or television programs.

As the functions are diversified, such a terminal is in the form of a multimedia player with complex functions such as, for example, taking photos or videos, playing music or video files, and receiving games and broadcasts. It is being implemented.

In order to support and increase the function of the terminal, it may be considered to improve the structural part and/or the software part of the terminal.

In particular, researches on electronic devices in the form of wearable by users are in progress in recent years, and in particular, studies on wearable electronic devices that can be effectively used not only in a wearing state but also in a non-wear state are in progress.

It is an object of the present invention to solve the above and other problems. Another object of the present invention is to provide an electronic device capable of changing an optical path of light generated from a display including a variable lens capable of changing a refractive index, and a control method thereof.

According to an aspect of the present invention to achieve the above or other objects, a display; At least one optical lens for changing an optical path of light generated by the display with a fixed refractive index; A prism reflecting the light passing through the at least one optical lens at least once and guiding it to a destination point; A variable lens positioned on the light path between the display and the destination point, and changing at least a part of the light path by changing at least a part of the refractive index according to a control signal; And a control unit generating the control signal.

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

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

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

When the electronic device is in a non-wearing state, the controller may determine an area to display 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 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 there is no change in the optical path before and after passing through the variable lens. It may operate in at least one of a third mode in which the light passed through the variable lens is refracted in a specific direction.

The prism may further include a reflective plate for total reflection and reflecting the light moving within the prism to the outside of the prism.

In addition, according to an aspect of the present invention in order to achieve the above or other objects, detecting whether the electronic device is worn; When the electronic device is in a worn state, maintaining a preset optical path and forming an optical path toward the eyeball of the user wearing it; And changing the optical path so that an image is displayed on a mounting surface on which the electronic device is placed by changing the preset optical path when the electronic device is not worn.

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

The changing of the optical path may include changing an area to display the image based on at least one of a color and a material of the seating surface.

The effects of the electronic device and the control method thereof 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 in that the optical path of light generated by the display can be changed by including a variable lens capable of changing a refractive index.

Further scope of applicability of the present invention will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, specific embodiments such as the detailed description and preferred embodiments of the present invention should be understood as being given by way of example only.

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

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Mobile terminals described in this specification include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, and slate PCs. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)), etc. may be included. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TVs, desktop computers, and digital signage, except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating a mobile terminal related to the present invention, and FIGS. 1B and 1C are conceptual diagrams of an example of a mobile terminal related to the present invention viewed from 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 a power supply unit 190. ), etc. The components shown in FIG. 1A are not essential for implementing the mobile terminal, and thus, the mobile terminal described in the present specification may have more or fewer components than those listed above.

More specifically, among the components, the wireless communication unit 110 may be configured between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and an external server. It may include one or more modules that enable wireless communication between. 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 reception 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 input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, or an audio input unit, and a user input unit 123 for receiving information from a user, for example, , A touch key, a mechanical key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, information on surrounding environments surrounding the mobile terminal, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of the display unit 151, the sound output unit 152, the hap tip module 153, and the light output unit 154 can do. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. Such a touch screen can function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user, and can provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a passage between various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a device equipped with an identification module. It may include at least one of a port, an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The mobile terminal 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

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 driven by the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of delivery for basic functions of the mobile terminal 100 (eg, incoming calls, outgoing functions, message reception, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process appropriate information or functions to a user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

Also, in order to drive an application program stored in the memory 170, the controller 180 may control at least some of the components examined together with FIG. 1A. Furthermore, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 with each other.

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

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method 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, before examining various embodiments implemented through the mobile terminal 100 described above, the above-listed components will be described in more detail with reference to FIG. 1A.

First, referring to the wireless communication unit 110, the broadcast reception module 111 of the wireless communication unit 110 receives a broadcast signal and/or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching of at least two broadcast channels.

The mobile communication module 112 includes technical standards or communication methods for mobile communication (eg, GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), CDMA2000 (Code Division Multi Access 2000)), EV -DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc.), transmits and receives radio signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

The wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission/reception of text/multimedia messages.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built-in or external to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Examples of wireless Internet technologies include WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc., and the wireless Internet module ( 113) transmits and receives data according to at least one wireless Internet technology in a range including Internet technologies not listed above.

From the point of view that wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 performs wireless Internet access through the mobile communication network. ) 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), ZigBee, and NFC. Near field communication may be supported by using at least one of (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. The short-distance communication module 114 is, between the mobile terminal 100 and a wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 through a wireless area network (Wireless Area Networks). ) And a network in which another mobile terminal 100 or an external server is located may support wireless communication. The local area wireless communication network may be a wireless personal area network (Wireless Personal Area Networks).

Here, the other mobile terminal 100 is a wearable device capable of exchanging (or interlocking with) data with the mobile terminal 100 according to the present invention, for example, a smartwatch, a smart glasses. (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. Furthermore, when the sensed wearable device is a device that is authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 transmits at least part of the data processed by the mobile terminal 100 to the short-range communication module ( 114) can be transmitted to the wearable device. Accordingly, a user of the wearable device can use data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a call is received by the mobile terminal 100, the user performs a phone call through the wearable device, or when a message is received by the mobile terminal 100, the user receives the received call through the wearable device. It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and representative examples thereof include a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if the mobile terminal utilizes the GPS module, it can acquire the location of the mobile terminal by using a signal transmitted from a GPS satellite. As another example, if the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the mobile terminal as a substitute or additionally. 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, the mobile terminal 100 Alternatively, a plurality of cameras 121 may be provided. The camera 121 processes an image frame such as a still image or a video obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. On the other hand, a plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming a matrix structure as described above, various angles or focal points are applied to the mobile terminal 100. A plurality of image information may be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to obtain a left image and a right image for implementing a stereoscopic image.

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

The user input unit 123 is for receiving information from the user, and when information is input through the user input unit 123, the controller 180 can control the operation of the mobile terminal 100 to correspond to the input information. . Such, the user input unit 123 is a mechanical (mechanical) input means (or a mechanical key, for example, a button located on the front, rear or side of the mobile terminal 100, a dome switch (dome switch), a jog wheel, Jog switch, etc.) and a touch-type input means. As an example, the touch-type input means comprises a virtual key, a soft key, or a visual key displayed on a touch screen through software processing, or a portion other than the touch screen On the other hand, the virtual key or the visual key can be displayed on the touch screen while having various forms. For example, graphic, text ), icon, video, or a combination thereof.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal, information on a surrounding environment surrounding the mobile terminal, and user information, and generates a sensing signal corresponding thereto. The controller 180 may control the driving or operation of the mobile terminal 100 or perform data processing, functions, or operations related to an application program installed in the mobile terminal 100 based on such a 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 or absence of an object approaching a predetermined detection surface or an object existing in the vicinity using the force of an electromagnetic field or infrared rays without mechanical contact. In the proximity sensor 141, the proximity sensor 141 may be disposed in an inner area of the mobile terminal surrounded by the touch screen as described above or near 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 type proximity sensor, a magnetic type proximity sensor, an infrared proximity sensor, and the like. When the touch screen is a capacitive type, the proximity sensor 141 may be configured to detect the proximity of the object by a change in the electric field according to the proximity of the conductive object. 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 action of allowing an object to be recognized as being positioned on the touch screen by being approached without contacting an object on the touch screen is called "proximity touch", and the touch The act of actually touching an object on the screen is referred to as "contact touch". A position at which an object is touched in proximity on the touch screen means a position at which the object is vertically corresponding to the touch screen when the object is touched in proximity. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.). have. Meanwhile, as above, the controller 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141, and further, provides visual information corresponding to the processed data. It can be output on the touch screen. Furthermore, the controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether a touch to the same point on the touch screen is a proximity touch or a touch touch. .

The touch sensor applies a touch (or touch input) to the touch screen (or display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. To detect.

As an example, the touch sensor may be configured to convert a pressure applied to a specific portion of the touch screen or a change in capacitance generated at a specific portion of the touch screen into an electrical input signal. The touch sensor may be configured to detect a location, an area, a pressure upon touch, a capacitance upon touch, and the like at which a touch object applying a touch on the touch screen is touched on the touch sensor. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a finger, a touch pen, a stylus pen, or a pointer.

In this way, when there is a touch input to the touch sensor, the signal(s) corresponding thereto is transmitted to the touch controller. The touch controller processes the signal(s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know whether an area of the display unit 151 is touched. Here, the touch controller may be a separate component from the controller 180 or may be the controller 180 itself.

Meanwhile, the controller 180 may perform different controls or perform the same control according to the type of the touch object by touching the touch screen (or a touch key provided in addition to 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 an operating state of the mobile terminal 100 or an application program being executed.

Meanwhile, the touch sensor and the proximity sensor described above are independently or in combination, and a short (or tap) touch, a long touch, a multi touch, and a drag touch on the touch screen. ), flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. You can sense the touch.

The ultrasonic sensor may recognize location information of a sensing target by using ultrasonic waves. Meanwhile, the controller 180 may calculate the location of the wave generator through information sensed from the optical sensor and the plurality of ultrasonic sensors. The location of the wave generator may be calculated by using a property that the light is much faster than the ultrasonic wave, that is, the time that the light reaches the optical sensor is much faster than the time that the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generator may be calculated using a time difference between a time when the ultrasonic wave arrives using light as a reference signal.

On the other hand, the camera 121, viewed as the configuration of the input unit 120, includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing target for a 3D stereoscopic image. The photosensor may be stacked on the display device, and the photosensor is configured to scan a motion of a sensing object close to the touch screen. More specifically, the photo sensor scans the contents placed on the photo sensor by mounting a photo diode and a transistor (TR) in a row/column and using an electrical signal that changes according to the amount of light applied to the photo diode. That is, the photosensor calculates the coordinates of the sensing object according to the amount of light change, and through this, position information of the sensing object may be obtained.

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 in the mobile terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

In addition, the display unit 151 may be configured as a three-dimensional display unit that displays a three-dimensional image.

A three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (no glasses method), and a projection method (holographic method) may be applied to the stereoscopic display unit.

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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 also outputs sound signals related to functions (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output unit 152 may include a receiver, a speaker, and a buzzer.

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

In addition to vibration, the haptic module 153 is used for stimulation such as an arrangement of pins that move vertically with respect to the contact skin surface, blowing force or suction force of air through the injection or inlet, grazing against the skin surface, contact of electrodes, and electrostatic force. It can generate various tactile effects, such as the effect by the effect and the effect by reproducing the feeling of cooling and warming using an endothermic or heat generating element.

The haptic module 153 may not only deliver a tactile effect through direct contact, but may also be implemented so that a user can feel the tactile effect through muscle sensations such as a finger or an arm. Two or more haptic modules 153 may be provided depending on the configuration aspect of the mobile terminal 100.

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

The signal output from the light output unit 154 is implemented as the mobile terminal emits a single color or multiple colors of light to the front or rear. The signal output may be terminated when the mobile terminal detects the user's event confirmation.

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

Meanwhile, the identification module is a chip that stores various types of information for authenticating the right to use the mobile terminal 100, and includes a user identification module (UIM), a subscriber identity module (SIM), and universal user authentication. It may include a module (universal subscriber identity module; USIM). A device equipped with an identification module (hereinafter,'identification device') may be manufactured in the form of a smart card. Accordingly, the identification device may be connected to the terminal 100 through the interface unit 160.

In addition, the interface unit 160 serves as 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, or is input from the cradle by a user. It may be a path through which various command signals are transmitted to the mobile terminal 100. Various command signals or the power input from the cradle may be operated as signals 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 may temporarily store input/output data (eg, a phone book, a message, a still image, a video, etc.). The memory 170 may store data on vibrations and sounds of various patterns output when a touch input on the touch screen is performed.

The memory 170 is a flash memory type, a hard disk type, a solid state disk type, an SDD 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 (EEPROM) -only memory), programmable read-only memory (PROM), magnetic memory, magnetic disk, and optical disk. The mobile terminal 100 may be operated in connection with a web storage that performs a storage function of the memory 170 over the Internet.

Meanwhile, as described above, the controller 180 controls an operation related to an application program and, in general, an overall operation of the mobile terminal 100. For example, when the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state limiting input of a user's control command for applications.

In addition, the controller 180 performs control and processing related to voice calls, data communication, video calls, etc., or performs pattern recognition processing capable of recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively. I can. Furthermore, in order to implement various embodiments described below on the mobile terminal 100 according to the present invention, the controller 180 may control any one or a combination of a plurality of components described above.

The power supply unit 190 receives external power and internal power under the control of the controller 180 to supply power necessary for the operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery configured to be rechargeable, and may be detachably coupled to a terminal body for charging or the like.

Further, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 to which an external charger supplying power for charging a 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 uses at least one of an inductive coupling method based on a magnetic induction phenomenon or a magnetic resonance coupling method based on an electromagnetic resonance phenomenon from an external wireless power transmitter. Power can be delivered.

Meanwhile, hereinafter, various embodiments may be implemented in a recording medium that can be read by a computer or a similar device using, for example, software, hardware, or a combination thereof.

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

Here, the terminal body may be understood as a concept 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, etc.) forming an exterior. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an 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 the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components 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 part of the side surface of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

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

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

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) that prevents water from permeating into the terminal body. For example, the waterproof unit 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 the combination thereof It may include a waterproof member for sealing the inner space.

The mobile terminal 100 includes 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, and first and second sound output units. Cameras 121a and 121b, first and second operation units 123a and 123b, microphone 122, interface unit 160, and the like may be provided.

In the following, as shown in FIGS. 1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, and a light output unit ( 154), a first camera 121a and a first operation unit 123a are disposed, a second operation unit 123b, a microphone 122, and an interface unit 160 are disposed on the side of the terminal body, and the terminal body The mobile terminal 100 in which the second sound output unit 152b and the second camera 121b are disposed on the rear surface of will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as necessary, or may be disposed on different sides. 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 of the terminal body rather than on 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 in the mobile terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

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

In addition, two or more display units 151 may exist depending on the implementation type of the mobile terminal 100. In this case, the mobile terminal 100 may have a plurality of display units spaced apart or integrally disposed on one surface, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. Content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

On the other hand, the touch sensor is configured in the form of a film having a touch pattern and is disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or a metal wire patterned directly on the rear surface of the window 151a. May be. Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or may be provided inside the display.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may 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 manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia playback sounds. ) Can be implemented.

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between structures (eg, a gap between the window 151a and the front case 101). In this case, the externally formed hole for sound output is not visible or hidden, so that the appearance of the mobile terminal 100 may be more simple.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, e-mail reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the light output.

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

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

In this drawing, the first manipulation unit 123a is illustrated as being a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a push key (mechanical key) or may be configured as a combination of a touch key and a push key.

Contents input by the first and second manipulation units 123a and 123b may be variously set. For example, the first operation unit 123a receives commands such as menu, home key, cancel, search, etc., and the second operation unit 123b is output from the first or second sound output units 152a, 152b. Commands such as adjusting the volume of sound and switching to the touch recognition mode of the display unit 151 may be input.

Meanwhile, as another example of the user input unit 123, a rear input unit (not shown) may be provided on the rear surface of the terminal body. This rear input unit is manipulated 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, scroll, etc., control the volume of sound output from the first and second sound output units 152a and 152b, and touch recognition mode of the display unit 151 You can receive commands such as conversion of. The rear input unit may be implemented in a form capable of inputting by a touch input, a push input, or a combination thereof.

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

When the rear input unit is provided on the rear surface of the terminal body, a new type of user interface can be implemented using the rear input unit. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided on the front of the terminal body, and the first operation unit 123a is not disposed on the front 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 a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an 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 a user's voice and other sounds. The microphone 122 may be provided in a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction 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 format. Such a camera may be referred to as an'array camera'. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 illuminates light toward the subject when photographing the subject with the second camera 121b.

A second sound output unit 152b may be additionally disposed on 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 to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. For example, an antenna forming a part of the broadcast receiving module 111 (refer to FIG. 1A) may be configured to be retractable 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 (refer to 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 configured to be 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 enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

On the other hand, in this drawing, the rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to limit the separation of the battery 191, and to protect the battery 191 from external shock and foreign substances. It is illustrated. When the battery 191 is configured to be detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

An accessory that protects the exterior of the mobile terminal 100 or assists or expands the function of the mobile terminal 100 may be added to the mobile terminal 100. An example of such an accessory may be a cover or a pouch that covers or accommodates at least one surface of the mobile terminal 100. The cover or pouch may be configured to interlock with the display unit 151 to expand functions of the mobile terminal 100. Another example of an accessory may be a touch pen for assisting or extending a touch input to a 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 the human body, and may include a frame portion (case, housing, etc.) for this. The frame portion may be formed of a flexible material to facilitate wearing. In this drawing, it is illustrated that the frame portion includes the first frame 101 and the second frame 102 of different materials. In general, the mobile terminal 100 may include features of the mobile terminal 100 of FIGS. 1A to 1C or similar features.

The frame portion is supported on the head and provides a space in which various parts are mounted. As shown, electronic components such as the control module 180 and the sound output module 452 may be mounted on the frame part. In addition, 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 is configured to control various electronic components provided in the mobile terminal 100. The control module 180 may be understood as a configuration corresponding to the controller 180 described above. In this drawing, it is illustrated that the control module 180 is installed in the frame portion on one side of the head. However, the location of the control module 180 is not limited thereto.

The prism 206 is a bone generated in the display (202 in FIG. 3). It can be reflected at least once and guided to the destination point. That is, it may play a role of projecting an image to the user's eyes by changing the optical path of light so that the image can be shown directly in front of the user's eyes.

The image output to the user's eyes through the prism 206 may be viewed by overlapping with the general field of view. The mobile terminal 100 may provide an Augmented Reality (AR) that displays a single image by superimposing a virtual image on a real image or a background by using such display characteristics.

The camera 121 is disposed adjacent to at least one of the left eye and the right eye, and is formed to capture a front image. Since the camera 121 is located adjacent to the eye, the camera 121 may acquire a scene viewed by the user as an image.

In this drawing, the camera 121 is provided in the control module 180, but is not limited thereto. The camera 121 may be installed on the frame unit, or may be provided in plural to obtain a stereoscopic image.

The glass-type mobile terminal 100 may include user input units 123a and 123b operated to receive a control command. The user input units 123a and 123b may be employed in any manner as long as it is a tactile manner, such as touch or push. In this drawing, it is exemplified 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) that receives sound and processes it as electrical voice data, and a sound output module 152 that outputs sound. The sound output module 452 may be configured to transmit sound through a general sound output method or a bone conduction method. When the sound output module 152 is implemented in a bone conduction method, when the user wears the mobile terminal 100, the sound output module 152 is in 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 described above will be described with reference to the accompanying drawings. It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

FIG. 3 is a diagram illustrating a principle of image formation when the electronic device of FIG. 2 is worn.

As shown in FIG. 3A, the conventional glass-type electronic device 100 may be in the form of glasses worn on the user's head H. The user may recognize an image generated by the image generator 200 of the electronic device 100 through the eye E.

As shown in (b) of FIG. 3, light generated by the display 202 may be transmitted to the user through a certain 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 generator 200 wants to transmit to the user.

The optical lens 204 may 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 a 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. In other words, in consideration of the lens (EL) of a typical user serving as a convex lens, at least one concave so that light that has passed through the lens (EL) is condensed in the retina (RE) to form the second image (I2) This means that lenses and/or convex lenses may be combined.

The prism 206 may reflect light that has been refracted while passing through the optical lens 204 at least once and guide it to a destination point. Light passing through the optical lens 204 and incident on the prism 206 may be moved to the reflector 208 by moving along a path totally reflected in the prism 206.

The reflector 208 may reflect light that has moved along the prism 206 in the direction of the eyeball (E). The reflector 208 may be configured as a half mirror.

The light reflected from the reflector 208 may form the first and second optical paths L1 and L2 and may be directed to the lens EL. When considering the lens EL serving as a convex lens, the first and second optical paths L1 and L2 may be divergent. That is, the first and second optical paths L1 and L2 of the emanating form pass through the lens EL and may be changed to the third and fourth optical paths L3 and L4 of a convergent form. The 3rd and 4th optical paths L3 and L4 of a converging shape may form an image by being formed on the retina RE. That is, it means that the second image I2 that is substantially the same as the first image I1 can be generated.

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

As shown, if the electronic device 100 is not worn, a virtual image may occur 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 light passing through the reflector 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 first and second optical paths L1 and L2 in the form of divergence 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 may become a virtual image because the lens EL does not exist within a certain distance from the prism 206. Accordingly, there may be a problem that the third image I3 cannot be visually recognized.

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

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

As shown in FIGS. 5A to 5C, the variable lens 210 may perform different operations according to an applied voltage and/or current. For example, when the voltage of Va is applied, the optical paths of the incident light (RI) and the emission light (RO) may be the same, and at this time, the variable lens 210 is the incident light (RI) side and the emission light (RO) side All of these can be flat.

When the voltage is changed to Vb, the side surface of the emission light RO may be convexly changed. When the side surface of the emission light RO changes to be convex, the emission light RO may be refracted in a converging direction. That is, it means that the variable lens 210 can operate like a convex lens.

When the voltage is changed to Vc, the side surface of the emission light RO may be concavely changed. When the side surface of the emission light RO changes to be concave, the emission light RO may be refracted in the direction in which it is emitted. That is, it means that the variable lens 210 can operate like a concave lens.

The voltage Vb may be greater than Va, and the voltage Vc may be greater than Vb. In other words, it means that there may be a certain correlation between the applied voltage.

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

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

The property change of the variable lens 210 according to the change in voltage may be substantially simultaneously performed according to the application of the voltage. Therefore, the variable lens 210 can be quickly changed depending on whether the electronic device 100 is worn.

The property change of the variable lens 210 may be achieved by at least one of a change in an applied voltage, a change in an applied current, and a change in an applied control signal. For example, this means that the variable lens 210 may change from the property of the convex lens to the property of the concave lens according to the change of the applied voltage. Alternatively, the properties of the variable lens 210 may be changed by a combination of voltage, current, and control signal.

6 and 7 are diagrams illustrating a principle of displaying an image when an electronic device is worn and not worn according to an embodiment of the present invention.

As shown in these drawings, the electronic device 100 according to an exemplary embodiment of the present invention can bear a real image in a state in which the electronic device 100 is not worn as well as in a worn state.

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

The controller 180 may detect the wearing of the electronic device 100. For example, it means that wearing of the electronic device 100 can be detected through a contact sensor mounted on the electronic device 100. Alternatively, whether or not the electronic device 100 is worn may be detected through a proximity sensor and/or a touch sensor mounted on the electronic device 100. This means that a contact sensor, a proximity sensor, and/or a touch sensor may be provided, such as a nose support in contact with the user's nose and a frame in contact with the head of the user's ear. Alternatively, it may be determined whether or not to wear by detecting the user's movement through an acceleration sensor or the like.

The controller 180 may determine that the user is wearing the electronic device 100 when at least one of detection of a user's movement and detection of a contact through a contact sensor of the noserest is sensed for a predetermined time or longer.

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

Since the change in the optical path due to the variable lens 210 does not occur, the optical path may be formed as if the variable lens 210 is not present. Therefore, the light passing through the variable lens 210 and the prism 206 forms the first and second optical paths L1 and L2, enters the lens EL, and finally the second image I2 on the retina RE. ) Can be formed.

7, the first image I2 may be displayed on the display 202 when the electronic device 100 is not worn.

If it is determined that the electronic device 100 is not worn, the controller 180 may change the property of the variable lens 210 to correspond thereto. For example, the control signal is changed to have the property of the convex lens. It means that it can be applied to (210).

When the properties of the variable lens 210 change, the seventh and eighth optical paths L7 and L8 passing through the variable lens may be changed. For example, it means that it can change into a form that converges. When the seventh and eighth optical paths L7 and L8 are changed, the first and second optical paths L1 and L2 passing through the prism 206 and the reflector 208 and toward the bottom surface GR may be changed. . For example, it means that the first and second optical paths L1 and L2 can be changed to create a real image.

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

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

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

As shown in these drawings, the electronic device 100 according to an exemplary embodiment of the present invention can effectively transmit information to a user even when the electronic device 100 is not worn on the floor GR.

As illustrated in FIG. 8A, the electronic device 100 may display an image IM in the first area A1. For example, this 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. 8B, the electronic device 100 may display an image IM in the second area A2. The second area A2 may be an optional display area. For example, if it is determined that it is not desirable to display the image IM in the first area A1, the controller 180 may display an image in the second area A2 instead of the first area A1. IM) means can be displayed. When the display of the image IM is not desirable, it may be related to the color and material 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 too bright or too dark to identify the displayed image IM, the second area A2 instead of the first area A1 You can display an image (IM) on.

As shown in FIG. 9, the electronic device 100 according to an embodiment of the present invention may adjust an angle of light emitted from the prism 206. For example, from the first direction (D1) to the second direction (D2) to allow the image to be irradiated on the nearest floor surface (GR) based on the prism 206, the third direction (D3), etc. You can examine the image from various angles. Adjustment of the irradiation angle in the first to third directions D1 to D3 may be possible by the operation of the variable lens 210. That is, it means that the variable lens 210 is changed to an irregular state and the irradiation direction of the image can be changed.

10 and 11 are diagrams illustrating an operation of an 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 an embodiment of the present invention may perform an operation S10 of sensing the current state of the electronic device 100.

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

The electronic device 100 may be in a worn or non-wear state. For example, this means that the electronic device 100 may be put down on the floor for charging or the like.

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

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

When the electronic device 100 is not being worn, a step S40 of changing the set optical path may be performed.

When the electronic device 100 is not being worn, maintaining the optical path as in the case of being worn may cause a virtual image and the user may not be able to recognize the image. Therefore, if it is determined that it is not being worn, the controller 180 may apply a control signal to the variable lens 210 so that the path of the exit light to the incident light of the variable lens 210 is changed. If the light path changes, a real image may form on the floor.

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

The controller 180 may determine a location on the floor surface to irradiate the image. As for the irradiation location, a specific location can be set as a default value. For example, it may be set to irradiate an image in a specific area away from the electronic device 100 by a specific distance.

The controller 180 may detect a state of a specific region. For example, this means that the color and material of a specific area can be detected using a camera or the like. Based on the detected result, the controller 180 may determine whether it is appropriate to irradiate an image in a specific area. If a specific area is not suitable for expressing an image, the controller 180 may determine another area as an image irradiation position.

An operation (S44) of applying a control signal to the variable lens based on the determined irradiation position may proceed.

The controller 180 may change a position where an image is projected by applying a control signal to the variable lens. For example, it means that the projection angle can be changed to change the position where the image is projected.

The above-described present invention can be implemented as a computer-readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices storing data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is also a carrier wave (eg, transmission over the Internet). Also, the computer may include the controller 180 of the terminal. Therefore, the detailed description above should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

100: electronic device 110: wireless communication unit
120: input
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 an optical path of light generated by the display with a fixed refractive index;
A prism reflecting the light passing through the at least one optical lens at least once and guiding it to a destination point;
A variable lens positioned on the light path between the display and the destination point, and changing at least a part of the light path by changing at least a part of the refractive index according to a control signal;
A sensor that detects whether the electronic device is worn; And
And a control unit for generating the control signal for changing the refractive index of the variable lens based on whether or not to wear detected through the sensor,
The control unit,
When the electronic device is in a non-wearing state, the electronic device determines an area to display 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 of claim 1,
The variable lens,
An electronic device positioned between the optical lens and the prism in the optical path. delete The method of claim 1,
The control unit,
An electronic device for generating the control signal for changing 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. delete The method of claim 1,
The variable lens,
A first mode in which the light passing through the variable lens is emitted,
A second mode for converging the light passing through the variable lens,
A third mode in which there is no change in the optical path before and after passing through the variable lens,
An electronic device operating in at least one of fourth modes in which the light passed through the variable lens is refracted in a specific direction. The method of claim 1,
The prism,
The electronic device further comprises a reflecting plate for total reflection and reflecting the light moving within the prism to the outside of the prism. Detecting whether the electronic device is worn;
When the electronic device is in a worn state, maintaining a preset optical path and forming an optical path toward the eyeball of the user wearing it; And
When the electronic device is not worn, changing the optical path so that an image is displayed on a mounting surface on which the electronic device is placed by changing the preset optical path,
The step of changing the optical path,
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. The method of claim 8,
The step of changing the optical path,
Determining a position to display the image;
And changing the refractive index of the variable lens so that the image is displayed at the determined position. delete

Images