WO2021070980A1

WO2021070980A1 - Mobile terminal and method for controlling same

Info

Publication number: WO2021070980A1
Application number: PCT/KR2019/013149
Authority: WO
Inventors: 이선혁; 이동주; 허찬휘
Original assignee: 엘지전자 주식회사
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2021-04-15

Abstract

Provided is a mobile terminal characterized by comprising: a display unit which outputs video content; a depth camera which acquires depth information on a subject facing the display unit; and a control unit which controls the display unit and the depth camera, wherein the control unit recognizes the positions of the eyes of a user through the depth camera, and pauses the video content when the positions of the eyes of the user are outside a certain range.

Description

Mobile terminal and its control method

The present invention relates to a method for controlling the mobile terminal. In more detail, it is applicable to the field of technology that outputs video content and guides the user to watch the output video content from an appropriate distance and in a correct posture.

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 according to whether or not 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 voices, 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 addition, the mobile terminal may receive a multicast signal providing visual content such as broadcast and video or television programs.

As 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 recent years, a mobile terminal has used a depth camera to make communication and interaction between a user and a device more convenient. The mobile terminal may recognize a user's face, hand, motion, etc. using a depth camera, and provide a function corresponding to the recognized user's movement.

As described above, as a mobile terminal plays a role as a multimedia device with complex functions and becomes more common, not only adults but also young children use the mobile terminal more frequently. In addition, as the number of users who use the mobile terminal for a long period of time increases, the influence of the posture using the mobile terminal on the user is increasing. In particular, they share a sense of the problem that the posture of using a mobile terminal has a great effect on children in their growth period.

The present invention aims to solve the above-described problems and other problems through the specification of the present invention.

An object of the present invention is to guide the user to watch the output video content in the correct posture at an appropriate distance, so that the user can form a proper habit of using a mobile terminal.

In order to achieve the above object, according to an embodiment, the present invention controls a display unit for outputting video content, a depth camera for obtaining depth information of a subject facing the display unit, and the display unit and the depth camera. And a control unit, wherein the control unit recognizes a position of a user's eyes through the depth camera, and pauses the video content when the position of the user's eyes is out of a specific area range. .

In addition, according to an embodiment, the present invention provides a mobile terminal, wherein the specific area range is located at least a first distance and less than a second distance in the direction of a normal vector of the display unit with respect to the depth camera. .

In addition, the present invention provides a mobile terminal, characterized in that, according to an embodiment, the first distance is a minimum distance at which an area corresponding to the display unit is located within a field of view of the depth camera on a plane facing the display unit. do.

In addition, the present invention provides a mobile terminal, wherein the specific area range includes a central area of an area corresponding to the display unit on a plane facing the display unit.

In addition, according to an embodiment of the present invention, there is provided a mobile terminal, wherein the specific area range is included in an area corresponding to the display unit on a plane facing the display unit.

In addition, according to an embodiment of the present invention, the specific area range is a movement characterized in that the range of the area facing the display unit is changed in correspondence with a distance away from the depth camera in the direction of the normal vector of the display unit. Provide a terminal.

In addition, according to an embodiment of the present invention, the mobile terminal further comprises a motion sensor for detecting the rotation of the mobile terminal, and the control unit rotates and plays the video content in response to the rotation state of the mobile terminal. And changing the specific area range.

Further, according to an embodiment of the present invention, when the position of the user's eyes is within the specific area range, the controller detects the rotation of the user's face, and when the user's face is rotated by a predetermined angle or more, It provides a mobile terminal characterized in that the video content is paused.

In addition, according to an embodiment of the present invention, the controller detects the left and right rotation of the user's face through a distance difference between the user's left eye and the right eye, and when the user's face is rotated left or right by a preset angle or more. It provides a mobile terminal, characterized in that the video content is paused.

In addition, according to an embodiment of the present invention, the controller detects the vertical rotation of the user's face through a distance difference between the user's forehead and chin, and when the user's face is rotated vertically by more than a preset angle, the It provides a mobile terminal characterized in that the video content is paused.

In addition, according to an embodiment of the present invention, the controller detects a clockwise or counterclockwise rotation of the user's face through a height difference between the user's left eye and the right eye, and the user's face is equal to or greater than a preset angle. Provided is a mobile terminal characterized in that, when the video content is rotated in a clockwise or counterclockwise direction, the video content is paused.

In addition, according to an embodiment of the present invention, the control unit controls the display unit to output an indicator guiding within the specific area when the user's eyes are out of the specific area range. to provide.

In addition, according to an embodiment of the present invention, when the user's face is rotated by a preset angle or more, the controller controls the display unit to output an indicator guiding the viewing posture of the video content. Provides.

In addition, according to an embodiment of the present invention, after the video is paused, when the user's eyes are located within the specific distance range and the rotation angle of the user's face is located within a preset angle range, the controller It provides a mobile terminal, characterized in that controlling the display unit to play back video content.

In addition, according to another embodiment of the present invention, reproducing video content through a display unit, acquiring depth information of a subject facing the display unit through a depth camera, and eyes of a user through the acquired depth information. Recognizing a location, and pausing the video content when the user's eye location is out of a specific area range is provided.

The effects of the mobile terminal and its control method according to the present invention will be described as follows.

The present invention may help a user who watches video content through a short-term movement to form a habit of viewing the video content in a correct posture at an appropriate distance.

Further scope of the 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, detailed description and specific embodiments such as preferred embodiments of the present invention are understood to be given by way of example only. It should be.

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 related to the present invention as viewed from different directions.

2 illustrates an embodiment in which a user views video content output from a mobile terminal outside a specific distance range according to the present invention.

3 illustrates an embodiment in which a user views video content output from a mobile terminal related to the present invention in the upper, lower, left, and right areas.

4 is a diagram illustrating a specific area range provided in response to a mode in which a mobile terminal outputs video content according to the present invention.

5 and 6 are diagrams for explaining a method of setting the specific area range by a terminal according to the present invention.

7 illustrates an embodiment in which a user views a video content output from a mobile terminal according to the present invention at an angle.

FIG. 8 is a diagram illustrating a method of detecting rotation of a user's face in FIG. 7.

9 is a flowchart illustrating an entire processor for reproducing a video in response to a user's eye position in a mobile terminal related to the present invention.

10 is a flowchart illustrating an indicator provided in response to a user's eye position in a mobile terminal related to the present invention.

FIG. 11 is a diagram for explaining an embodiment in which video content is stopped and replayed in response to a user's eye position in a mobile terminal related to 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 constituent elements 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, when 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 changes included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Mobile terminals described herein 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 is understood that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TV, desktop computer, digital signage, etc., except when applicable only to mobile terminals. Technicians will find it easy.

1A to 1C, FIG. 1A is a block diagram illustrating a mobile terminal related to the present invention.

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. ) And the like. The components shown in FIG. 1A are not essential for implementing the mobile terminal 100, so the mobile terminal 100 described in this specification may have more or fewer components than the components listed above. have.

More specifically, among the above components, the wireless communication unit 110 is provided 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 to enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules that connect 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 100, information on a surrounding environment surrounding the mobile terminal 100, 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. Sensor (G-sensor), gyroscope sensor (gyroscope sensor), motion sensor (motion sensor), RGB sensor, infrared sensor (IR sensor: infrared 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 100 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 a display unit 151, an audio output unit 152, a haptic module 153, and a 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 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 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 (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 100.

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 discussed with reference to FIG. 1A. Further, 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 respective components may operate in cooperation with each other to implement the operation, control, or control method of the mobile terminal 100 according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal 100 may be implemented on the mobile terminal 100 by driving at least one application program stored in the memory 170.

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 A camera 121 may be provided.

The camera 121 may be a part of the mobile terminal 100 of the present invention, or may be a configuration including the mobile terminal 100. That is, the camera 121 and the mobile terminal 100 of the present invention may include at least some common features or configurations.

The camera 121 processes an image frame such as a still image or a moving image 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. Meanwhile, 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 focuses may be 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.

Meanwhile, the sensing unit 140 senses at least one of information in the mobile terminal 100, information on a surrounding environment surrounding the mobile terminal 100, and user information, and generates a sensing signal corresponding thereto. The controller 180 may control 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 100 that is surrounded by the touch screen 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 located on the touch screen without being in contact with the object to be recognized as being positioned on the touch screen is named "proximity touch", and the touch The act of actually touching an object on the screen is called "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, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, 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 into an electrical input signal. The touch sensor may be configured to detect a location, an area, a pressure when a touch, a capacitance when a touch is touched, and the like at which a touch object applied to 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. Accordingly, the controller 180 can know which area of the display unit 151 has been 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 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 that of 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, as 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 are 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 the 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 may calculate the coordinates of the sensing object according to the amount of light change, and through this, the location information of the sensing object may be obtained.

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 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 particular type of optical device, the description of a particular type of optical device can generally be applied to other types of optical devices.

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 (eg, 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 detachable 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 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 that seals the inner space of the city.

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.

Hereinafter, 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 manipulation 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 form of the mobile terminal 100. In this case, in the mobile terminal 100, a plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces, respectively.

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. By 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. The content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

Meanwhile, the touch sensor is formed in a film form 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 is 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. It can be implemented in the form of ).

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 output of light.

The first camera 121a processes an image frame of a still image or a moving picture 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 operated 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 manipulation 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 manipulated 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 a touch key, but the present invention is not limited thereto. For example, the first manipulation 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 set in various ways. 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. For 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 it 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 side 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 manipulation unit 123a provided on the front of the terminal body, and the first manipulation unit 123a is not disposed on the front of the terminal body, The display unit 151 may be configured with 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 the fingerprint information sensed 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 at 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 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 that is built into 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 to cover the battery 191 to limit the separation of the battery 191 and protect the battery 191 from external shocks and foreign substances. It is exemplifying. 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.

The mobile terminal 200 of the present invention includes a display unit 210 for outputting video content, a depth camera 220 for obtaining depth information of a subject 300 facing the display unit 210, a display unit 210, and A control unit for controlling the depth camera 220 may be included.

The mobile terminal of the present invention may recognize the position of the user's eye 310 through a depth camera, and pause the video content when the position of the user's eye 310 is out of a specific area range.

In the mobile terminal of the present invention, the specific range may be set through a distance away from the depth camera 210 along the sailboat vector of the display unit 210.

Specifically, the mobile terminal of the present invention can pause the video content to be played when the user's eye 310 deviates from the first distance 410 or more and less than the second distance 420 based on the depth camera 210. have. The second distance 420 is longer than the first distance 410, and when the user's eye 310 is located in the distance range d between the first distance 410 and the second distance 420, video playback can be maintained. have.

Specifically, FIG. 2A illustrates an embodiment in which the user's eye 310 is positioned closer to the depth camera 220 than the first distance 410 along the normal vector of the display unit 210. In this case, the video content played on the display unit 210 may be paused.

In addition, FIG. 2B illustrates an embodiment in which the user's eye 310 is positioned farther than the second distance 420 to the depth camera 220 along the normal vector of the display unit 210. In this case, the video content played on the display unit 210 may be paused.

In the present invention, the first distance 410 may be set to be longer than a minimum distance at which depth information can be obtained through the depth camera 310.

In the present invention, the first distance 410 may be set as a distance capable of protecting the user's vision.

In addition, according to the present invention, the first distance 410 may be set as the minimum distance located within the angle of view of the depth camera 310 on the plane facing the display unit 210 and the area corresponding to the display unit 210. have. In this regard, it will be described in detail with reference to FIGS. 5 and 6.

In the present invention, the specific area range 430 may include a center (o') area of an area corresponding to the display unit 210 on a plane facing the display unit 210. Specifically, the specific area range 430 may have an area corresponding to the display unit 210 on a plane facing the display unit 210 or may have an area included in the display unit 210.

Specifically, FIG. 3 shows an embodiment in which the specific area range 430 is included in the area corresponding to the display unit 210, and the user's eyes 310 are left and right of the specific area range 430. , Each of the upper and lower embodiments is shown.

In the present invention, the specific area range 430 may be set differently according to a mode in which the mobile terminal outputs a screen. In this regard, see FIG. 4.

4 is a diagram illustrating a specific area range provided in response to a mode in which a mobile terminal outputs video content according to the present invention. Here, the specific area range refers to an area where the user's eyes are positioned so that the video content is played without stopping.

The present invention can recognize the rotation of the mobile terminal 200 through a motion sensor. The mobile terminal 200 of the present invention may include a display unit 210 having different horizontal and vertical ratios. The mobile terminal 200 of the present invention may include a display unit 210 whose width is longer than its height. According to the present invention, when the mobile terminal 200 is mounted horizontally as shown in FIG. 4(a), video content can be played on the display unit 210 according to the horizontal mode. In addition, according to the present invention, when the mobile terminal 200 is vertically mounted as shown in FIG. 4(b), video content may be played on the display unit 210 according to the vertical mode.

According to the present invention, the specific area range 430 may be differently set according to the horizontal mode and the vertical mode. For example, according to the present invention, when playing video content in a landscape mode as shown in FIG. 4A, the specific area range 430 may be set to be longer than the width and height. In addition, according to the present invention, when the video content is played in the vertical mode as shown in FIG. 4B, the specific area range 430 may be set to be longer than the horizontal one. In some cases, the present invention may be provided so that the specific area range 430 is out of the display unit 210 in the vertical mode as shown in FIG. 4B.

FIG. 5 is a diagram for describing a method of determining whether a user's eyes are included in the specific area range 430 of FIG. 4 when playing video content in a portrait mode. The mobile terminal 200 of the present invention may include a depth camera 220 on the top of the display unit 210. In this case, the present invention may include the specific region range from the depth camera 220 toward the lower end of the display unit 210 from a base line aligned along the normal vector of the display unit 210. In the present invention, the user's eyes 310 can be distinguished whether the user's eyes are located within the specific area range by using the distance y spaced from the base line toward the lower end of the display unit 210. . The specific area range may vary according to a distance between the user's eyes 310 and the depth camera 220. For example, at the first distance 410, the height of the specific area range may correspond to the height h0 of the display unit 210, but at a distance greater than the first distance 410, the specific area range is It may be a range of a region extending vertically from the height h0 of the height display unit 210. The present invention can display the specific area range corresponding to the separation distance between the user's eye 310 and the depth camera 220, and the specific area range is the separation distance between the user's eye 310 and the depth camera 220. It can be varied accordingly.

FIG. 6 is a diagram for describing a method of determining whether a user's eyes are included in the specific area range 430 of FIG. 4 when video content is played back in a landscape mode. The mobile terminal 200 of the present invention may include a depth camera 220 on the top of the display unit 210. The upper end of the display unit 210 in the vertical mode may correspond to the left end or the right end of the display unit 210 in the horizontal mode. In this case, the depth camera 220 may be located near the center of the left end or the right end of the display unit 210. In this case, the present invention may include the specific area range from the depth camera 220 to the upper and lower directions of the display unit 210 at the base line aligned along the normal vector of the display unit 210. have. In the present invention, the user's eyes 310 are spaced apart from the base line in the upper direction of the display unit 210 in the upper direction (x1) and in the lower direction (x2). It can be discriminated whether it is located in the specific area range. The specific area range may vary according to a distance between the user's eyes 310 and the depth camera 220. For example, at the first distance 410, the height of the specific area range may correspond to the width w0 of the display unit 210, but at a distance greater than the first distance 410, the specific area range is The height may be a range of an area extending vertically from the width w0 of the display unit 210. The present invention can display the specific area range corresponding to the separation distance between the user's eye 310 and the depth camera 220, and the specific area range is the separation distance between the user's eye 310 and the depth camera 220. It can be varied accordingly.

7 and 8 are diagrams for explaining an embodiment in which a mobile terminal related to the present invention detects a rotation of a user's face and pauses video content.

The mobile terminal 200 of the present invention detects the rotation state of the user 300's face when the user 300 views the video content by placing the user's eyes 310 within the specific area range, and detects the rotation state of the user's face. Correspondingly, the video content output from the display unit 210 may be paused.

The present invention detects whether the user 300 looking at the display unit 210 is rotated left and right, vertically and clockwise or counterclockwise, and responds to the rotational state of the user's face. Thus, the video content output from the display unit 210 may be paused.

The present invention can detect the left-right rotation of the user's face through a distance difference between the distance h_e1 from the user's face to the left eye 311 and the distance h_e2 from the right eye 312.

The present invention can detect the vertical rotation of the user's face through a distance difference between the distance h_h from the face of the user 300 to the forehead 320 and the distance h_j from the chin 330.

The present invention may detect a clockwise or counterclockwise rotation of the user's face through a height difference between the left eye 311 and the right eye 312 on the user's 300 face.

Specifically, FIG. 8(a) shows an image state in which the face of the user 300 is rotated to the right because the distance from the user's 300 face to the left eye 311 is closer than the distance from the right eye 312 I'm doing it. FIG. 8B shows a state in which the face of the user 300 is rotated to the left because the distance from the face of the user 300 to the right eye 312 is closer than the distance to the left eye 311. FIG. 8(c) shows a state in which the face of the user 300 is rotated upward because the distance from the face of the user 300 to the chin is closer than the distance from the forehead. FIG. 8(d) shows a state in which the face of the user 300 is rotated downward because the distance from the face of the user 300 to the forehead is closer than the distance from the chin.

Specifically, the mobile terminal 200 of the present invention detects the left and right rotation of the user's face looking at the display unit 210, and when the left and right rotation range is greater than a preset range, the video content output from the display unit 210 is temporarily You can stop.

In addition, the mobile terminal 200 of the present invention detects the vertical rotation of the user's face looking at the display unit 210, and pauses the video content output from the display unit 210 when the vertical rotation range is more than a preset range. can do.

In addition, the mobile terminal 200 of the present invention detects a clockwise or counterclockwise rotation of the user's face looking at the display unit 210, and when the clockwise or counterclockwise rotation range is more than a preset range, the video You can pause the content.

The mobile terminal of the present invention can play video content through the display unit. (S310)

The present invention may acquire depth information of a subject facing the display unit through a depth camera while playing video content. (S320)

In the present invention, it is possible to discern whether the subject is located within a preset distance range of the depth camera. (S330) Here, the preset distance range may correspond to a distance range in which depth information can be recognized or a distance range in which it is determined that there is a user viewing the video content.

In the present invention, when the subject is located outside the preset distance range of the depth camera (S330, No), the video may be temporarily suspended and a corresponding guide indicator may be output. Here, the guide indicator may include a notification to end the video content because no one is watching the video content.

In the present invention, when the subject is located within a preset distance range of the depth camera (S330, Yes), it is possible to discriminate whether the subject corresponds to the user's face. Here, the user's face may correspond to a general person's face. Specifically, the present invention can discriminate whether a subject corresponds to a user's eyes. (S340)

In the present invention, when the subject does not correspond to the user's eyes (S340), the video may be temporarily suspended and a corresponding guide indicator may be output. Here, the guide indicator may include a notification to end the video content because no one is watching the video content.

In the present invention, when the subject corresponds to the user's eye (S340, Yes), it is possible to discriminate whether the user's eye position is within a specific area range. (S360) Here, the specific area range may be included within a specific distance range based on the depth camera. Further, the specific area range may include a center of an area corresponding to the display unit on a plane facing the display unit. In some cases, the specific area range may vary depending on the distance between the user's eyes and the depth camera. In addition, the specific area range may vary according to the rotational state of the mobile terminal.

In the present invention, when the user's eyes are located outside the specific area range (S360, No), the video may be paused and a guide indicator may be output. Here, the guide indicator may include a notification guiding the location of the user watching the video.

In the present invention, when the user's eyes are located within the specific area range (S360, Yes), the rotation state of the user's face may be detected. (S370) Specifically, the present invention detects at least one of left and right rotation, vertical rotation, and clockwise/counterclockwise rotation of the user's face, and when the rotation is rotated more than a preset rotation angle (S370, Yes) , Guide indicator can be output. (S350) Here, the guide indicator may include a notification guiding the posture of the user watching the video.

The mobile terminal of the present invention can maintain a playback state of video content (S370, No) when the user's eyes are located within the specific area range (S360, Yes) and faces the display without rotating the user's face. (S380)

As described with reference to FIG. 9, when a subject does not exist within the recognizable distance of a depth camera during video content playback, the present invention may stop the video content and provide an indicator indicating that there is no user viewing the video content. In some cases, playback of the video content may be terminated after a preset time elapses after the indicator is notified.

In addition, the present invention can provide an indicator for guiding the location of the user viewing the video content when the user exists within the recognizable distance of the depth camera during video content playback and the user's eye is not within a specific area range. have. In some cases, the user may select to play the video while maintaining the current position in response to provision of the indicator.

In addition, the present invention provides an indicator for stopping the video content and correcting the face rotation state if the user's eyes exist within a specific area range while the video content is being played, but the video content is not stared directly without rotating the face. can do. In some cases, the user may select to play the video while maintaining the face rotation state in response to provision of the indicator.

Specifically, FIG. 10 shows an embodiment in which an appropriate distance range (d) in which the face of the user 300 (specifically, the user's eyes) is located is formed in the first distance 410 or more and less than the second distance 420 I'm doing it. 10(a) shows an embodiment in which when the face of the user 300 is too close to the display unit 210, video content playback is paused, and an indicator 211 guiding the user to watch from a distance is output. have. FIG. 10B illustrates an embodiment of outputting video content without stopping when the face of the user 300 is located within the proper distance range d. In addition, FIG. 10(c) shows an embodiment of outputting an indicator 211 for guiding the user to watch the video content in a pause when the user 300 watches the video content from too far away. Is shown.

The mobile terminal 100 of the present invention pauses the video content that is played when the user does not view the video content in a specific area range, or when the user views the video content in a state in which the face is rotated, that is, in an incorrect state, but the user is a specific area range. If the video content is viewed in the correct state within, the paused video content can be played again. That is, according to the present invention, when a user enters a specific area range, views a video content, and corrects a posture in a correct state, the video content may be received as a playback input signal, and the paused video content may be replayed.

Specifically, FIG. 11(a) shows an embodiment in which a user watches a video in a correct posture within a specific area range, and FIG. 11(b) shows that the video content is temporarily stopped outside the specific area range for the user. An example is shown. FIG. 11(c) illustrates an embodiment in which a user enters a specific area again, and video content is reproduced from a paused portion.

The above detailed description should not be construed as limiting 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.

Claims

A display unit that outputs video content;

A depth camera that acquires depth information of a subject facing the display unit; And

Includes; a control unit for controlling the display unit and the depth camera,

The control unit

Recognizing a position of the user's eyes through the depth camera, and pausing the moving image content when the position of the user's eyes exceeds a specific area range.
The method of claim 1,

The specific area range is

A mobile terminal, characterized in that located within a first distance or more and less than a second distance in a normal vector direction of the display unit with respect to the depth camera.
The method of claim 2,

The first distance is

A mobile terminal, characterized in that, on a plane facing the display unit, an area corresponding to the display unit is a minimum distance located within a field of view of the depth camera.
The method of claim 1,

The specific area range is

And a central area of an area corresponding to the display unit on a plane facing the display unit.
The method of claim 4,

The specific area range is

Mobile terminal, characterized in that included in an area corresponding to the display unit on a plane facing the display unit.
The method of claim 4,

The specific area range is

A mobile terminal, wherein a range of an area facing the display unit is varied in correspondence with a distance away from the depth camera in a direction of a normal vector of the display unit.
The method of claim 4,

The mobile terminal

Further comprising a motion sensor for detecting the rotation of the mobile terminal,

The control unit

And rotating and playing the video content in response to the rotational state of the mobile terminal, and changing the specific area range.
The method of claim 1,

The control unit

When the user's eye is located within the specific area range, the user's face is rotated, and when the user's face is rotated by a predetermined angle or more, the video content is paused.
The method of claim 8,

The control unit

A movement, characterized in that, when the user's face is rotated left and right through a distance difference between the user's left eye and the right eye, and when the user's face is rotated to the left or right by a preset angle, the moving picture content is paused. terminal.
The method of claim 8,

The control unit

The mobile terminal, characterized in that, detecting the vertical rotation of the user's face through a distance difference between the forehead and the chin of the user, and pausing the video content when the user's face is rotated up and down by a predetermined angle or more.
The method of claim 8,

The control unit

When the user's face is rotated in a clockwise or counterclockwise direction through a height difference between the user's left eye and the right eye, and the user's face is rotated clockwise or counterclockwise by a predetermined angle or more, the video content A mobile terminal, characterized in that for temporarily stopping.
The method of claim 8,

The control unit

And controlling the display unit to output an indicator guiding into the specific area when the user's eye is out of the specific area range.
The method of claim 8,

The control unit

And when the user's face is rotated by a preset angle or more, the display unit is controlled to output an indicator guiding a viewing posture of video content.
The method of claim 8,

The control unit

After the video content is paused, when the user's eyes are located within the specific distance range and the rotation angle of the user's face is located within a preset angle range, controlling the display unit to replay the video content Mobile terminal.
Reproducing video content through a display unit;

Acquiring depth information of a subject facing the display unit through a depth camera;

Recognizing a user's eye position through the acquired depth information;

And pausing the video content when the user's eye position is out of a specific area range.