KR102020311B1

KR102020311B1 - Method and terminal for recognizing jesture using muti-channel electrodes approach sensor

Info

Publication number: KR102020311B1
Application number: KR1020130006885A
Authority: KR
Inventors: 박진형; 김정환; 김병기
Original assignee: 엘지전자 주식회사
Priority date: 2013-01-22
Filing date: 2013-01-22
Publication date: 2019-09-10
Also published as: KR20140094277A

Abstract

A case having a front case and a rear case; A frame disposed between the front case and the rear case; A multi-channel electrode proximity sensor disposed at intervals in the upper bezel area of the frame and formed of electrodes separated into a plurality of channels; And by the multi-channel electrode proximity sensor is provided with a mobile terminal comprising a control unit for performing the gesture recognition by calculating the direction of the object approaching by changing the capacitance value for each channel.

Description

Gesture recognition method using multi-channel electrode proximity sensor and its terminal {METHOD AND TERMINAL FOR RECOGNIZING JESTURE USING MUTI-CHANNEL ELECTRODES APPROACH SENSOR}

The present invention relates to a gesture recognition method using a multi-channel electrode proximity sensor and a terminal thereof, and to a gesture recognition method using a multi-channel electrode proximity sensor to recognize a gesture by installing an electrostatic sensor using a multi-channel electrode in a terminal. To that terminal.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The mobile terminal may be divided into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

As the terminal functions are diversified, for example, as well as communication functions of voice, text, video, and e-mail, a terminal such as a picture or video recording, a music or video file playback, a game, a broadcast reception, etc. It is implemented in the form of a multi-function multimedia player with multimedia functions.

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

Meanwhile, in implementing the electrostatic proximity sensor, directivity must be ensured to prevent malfunction of the proximity sensor as a short channel electrode is used. In the reality that the bezel of the mobile terminal is getting narrower, ground shielding around the electrode becomes more difficult in space.

The problem to be solved by the present invention is a gesture using a multi-channel electrode proximity sensor that can prevent the malfunction by effectively controlling the proximity in the X, Y axis by configuring the electrode in a multi-channel to compensate for the shortcomings of the short-channel electrode configuration A recognition method and a terminal thereof are provided.

According to one aspect of the invention, the case having a front case and a rear case; A frame disposed between the front case and the rear case; A multi-channel electrode proximity sensor disposed at intervals in the upper bezel area of the frame and formed of electrodes separated into a plurality of channels; And by the multi-channel electrode proximity sensor is provided with a mobile terminal comprising a control unit for performing the gesture recognition by calculating the direction of the object approaching by changing the capacitance value for each channel.

The multi-channel electrode proximity sensor may include a center electrode positioned at a center region, at least one electrode disposed at left and right regions of the center electrode, and at least one electrode disposed at upper and lower regions of the center electrode.

The controller may distinguish the approach from the Z-axis and the approach from the X- and Y-axes by calculating the directionality of an object approached by the multi-channel electrode proximity sensor by changing the capacitance value of each channel.

In the multi-channel electrode proximity sensor, the number, size, and arrangement of electrodes may be determined in consideration of the sensitivity of each electrode and the spatial arrangement of the bezel region.

According to another aspect of the present invention, a gesture recognition method of a mobile terminal having a multi-channel electrode proximity sensor composed of electrodes separated by a plurality of channels arranged at intervals in the bezel area, each channel by the multi-channel electrode proximity sensor Collecting a change in capacitance value for each time; A gesture recognition method using a capacitive sensor using a multi-channel electrode is provided, which includes performing a gesture recognition by calculating a direction of an object in proximity to the collected capacitance value.

According to the present invention, the directionality of an object to be approached can be calculated through the value of each channel constituting the multichannel electrode proximity sensor. It can effectively prevent malfunction without ground.

According to the present invention, since the approach to the Z-axis and the approach from the X- and Y-axes can be distinguished by an algorithm according to the change in capacitance value by the multi-channel electrode proximity sensor, directivity can be secured.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 is a perspective view illustrating a terminal according to an embodiment of the present invention.
3 is an exploded perspective view showing a terminal according to an embodiment of the present invention.
4 illustrates a multi-channel electrode proximity sensor in a terminal according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And, in the drawings, the width, length, thickness, etc. of the components may be exaggerated for convenience. Like numbers refer to like elements throughout. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

The mobile terminal described herein includes a mobile phone, a smart phone, a pad, a note, a tablet PC, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and navigation. Etc. may be included. However, it will be readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

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

Referring to FIG. 1, a mobile terminal 100 according to an embodiment of the present invention may include a wireless communication unit 110, an A / V input unit 120, a user input unit 130, and a sensing unit 140. The output unit 150 may include a memory 160, an interface unit 170, a controller 180, and a power supply 190. The components shown in FIG. 1 are not essential, so that a mobile terminal having more or fewer components may be implemented.

The mobile terminal 100 includes a multi-mode portable terminal each connected to a communication network according to at least two communication methods or at least two providers and a multi standby portable terminal simultaneously connecting to a communication network according to at least two communication methods or at least two providers. It may include.

Hereinafter, for convenience of description, a mobile terminal according to an embodiment of the present invention will be described as a multi-standby mobile terminal as an example. The multi-standby mobile terminal simultaneously supports three communication networks selected from a plurality of communication schemes including code division multiple access (CDMA), global system for mobile telecommunication (GSM), wideband code division multiple access (WCDMA), and wireless broadband (Wibro). In the case of the Republic of Korea, it is a portable terminal that simultaneously connects to three communication networks selected from a plurality of operators including SKT, KTF, LGT, and the like.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short range communication module 114, a location information module 115, and the like. .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. Here, the broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information, or a server that receives pre-generated broadcast signals and / or broadcast related information and transmits the same to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112. The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast- (DVB-H). A digital broadcast signal may be received using a digital broadcast system such as handheld) or ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be configured to be suitable for not only the above-described digital broadcast system but also other broadcast systems.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external to the mobile terminal 100. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for obtaining a location of a mobile terminal, for example, a GPS (Global Position System) module.

The A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include, for example, a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, and a jog switch. The user input unit 130 may include an identification module selection switch for generating a selection signal for selecting any identification module among the plurality of identification modules.

The sensing unit 140 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. The sensing unit 140 may include, for example, a touch sensor 141 and a proximity sensor 142. The touch sensor 141 is a sensor for detecting a touch motion. For example, the touch sensor 141 may have a form of a touch film, a touch sheet, a touch pad, or the like.

The touch sensor 141 may form a mutual layer structure (hereinafter, referred to as a touch screen) with the display unit 151. The touch sensor 141 may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or capacitance generated at a specific portion of the display unit 151 into an electrical input signal. The touch sensor 141 may be configured to detect not only the touched position and area but also the pressure at the touch.

If there is a touch input to the touch sensor 141, the corresponding signal (s) is sent 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 which area of the display unit 151 is touched.

The proximity sensor 142 may be disposed near the touch screen or an inner region of the mobile terminal surrounded by the touch screen. 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 present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. The proximity sensor 141 has a longer life and higher utilization than a contact sensor.

Examples of the proximity sensor 142 include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

"Proximity touch" refers to the act of bringing the pointer close to the touch screen without being touched to recognize that the pointer is located on the touch screen. "Contact touch" refers to the act of actually touching the pointer on the touch screen. The position where the proximity touch is performed by the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.

The proximity sensor 142 detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and the proximity touch pattern may be output on the touch screen.

The output unit 150 is used to generate an output related to sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, and a GUI.

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 (flexible). and at least one of a 3D display.

Some of these displays can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

According to an implementation form of the mobile terminal 100, two or more display units 151 may exist. For example, a plurality of display units may be spaced apart or integrally disposed on one surface of the mobile terminal 100, or may be disposed on different surfaces, respectively.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an audio signal, for example, vibration. The video signal or the audio signal may also be output through the display unit 151 or the audio output module 152. Accordingly, the display unit 151 or the voice output module 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various haptic effects that a user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or may be sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through the jetting or suction port, grazing to the skin surface, contact of the electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to configuration aspects of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 160 may store data regarding vibration and sound of various patterns output when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an external device. For example, wired / wireless headset ports, external charger ports, wired / wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input / output (I / O) ports, The video input / output (I / O) port, the earphone port, and the like may be included in the interface unit 170.

The identification module 200 is a chip that stores various types of information for authenticating the use authority of the mobile terminal 100. The identification module 200 may include a user identification module (UIM), a subscriber identity module (SIM), and a general user. It may include an authentication module (Universal Subscriber Identity Module, USIM). A device equipped with an identification module (hereinafter referred to as an 'identification device') may be manufactured in the form of a smart card. Therefore, the identification device may be connected to the terminal 100 through a port.

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 becomes a passage through which power from the cradle is supplied to the mobile terminal 100, or various command signals input from the cradle by a user are input to the mobile terminal. It can be a passage to be delivered. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The controller 180 controls the overall operation of the mobile terminal. For example, the controller 180 may perform related control and processing for voice call, data communication, video call, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. The multimedia module 181 may be implemented in the controller 180 or may be implemented separately from the controller 180.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using, for example, software, hardware or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. These may be implemented by the controller 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

2 is a perspective view showing a terminal according to an embodiment of the present invention, Figure 3 is an exploded perspective view showing a terminal according to an embodiment of the present invention, Figure 4 is a terminal according to an embodiment of the present invention An electrostatic sensor using a multichannel electrode is shown.

2 to 4, the mobile terminal 100 according to an embodiment of the present invention implements a terminal body having a bar shape. However, the present invention is not limited to a bar-type mobile terminal, but is applicable to various structures such as a slide type, a folder type, a swing type, a swivel type, and the like.

The mobile terminal 100 includes a case 1 forming an appearance. The case 1 includes a front case 10 located in front of the terminal and a rear case 20 located behind the terminal. A frame 40 may be disposed between the front case 10 and the rear case 20 on which a PCB circuit or the like may be seated. Various electronic components may be embedded in the space formed between the front case 10 and the rear case 20. The case or frame may be formed by injecting synthetic resin, or may be formed of a metal material such as stainless steel (STS) or titanium (Ti).

The terminal body formed by the front case 10 and the rear case 20 includes a window plate 51, a sound output unit 152, a camera 121, a user input unit 54, 58, an antenna 55, a microphone ( 56 and the interface 57 may be provided.

The window plate 51 occupies most of the main surface of the front case 10. The display unit 30 may be disposed behind the window plate 51. An open part is formed in the front case 10 so that the image signal output from the display module 30 can be exposed to the outside, a window plate 51 is provided in front of the exposed part, and the display module 30 is located behind the exposed part. This can be located.

The window plate 51 is transparently formed so that a user can check the image signal displayed by the display module 30. The window plate 51 serves to protect the display module 30 from being impacted from the outside in front of the display module 30. The display module 30 and the window plate 51 may be referred to as the display unit 151 illustrated in FIG. 1.

The display module 30 may be disposed between the front case 10 and the frame 40. According to an embodiment of the terminal, when the frame 40 is not separately provided in the terminal 100, the display module 30 may be located between the front case 10 and the rear case 20. In any case, the display module 30 is located at the back of the front case 10 and the window plate 51 is located at the front of the front case 10.

The multi-channel proximity sensor 142 including the multi-channel electrode is provided in the upper bezel area of the frame 40.

The multi-channel electrode proximity sensor 142 may be disposed in the inner region of the mobile terminal 100 surrounded by the touch screen or near the touch screen. The proximity sensor 141 may detect the presence or absence of an object approaching a predetermined detection surface or an object present near the detection surface without using mechanical force or infrared rays.

Examples of the multi-channel electrode proximity sensor 142 include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, an infrared proximity sensor, and the like. . When the touch screen is capacitive, the touch screen may be configured to detect proximity of the pointer by a change in electric field according to proximity of the pointer.

The multi-channel electrode proximity sensor 142 detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). do. Information corresponding to the sensed proximity touch operation and the proximity touch pattern may be output on the touch screen.

The multichannel electrode proximity sensor 142 may be configured of multichannel electrodes. For example, the multi-channel electrode proximity sensor 142 may include the first electrode 71, the second electrode 72, the third electrode 73, the fourth electrode 74, the fifth electrode 75, and the sixth electrode. The electrode 76 and the seventh electrode 77 may be included.

The multi-channel electrode proximity sensor 142 includes a first electrode 71 and a second electrode 72 on the left side with respect to the fourth electrode 74, and the fourth electrode 74 and the fifth electrode on the right side ( 75). The multi-channel electrode proximity sensor 142 may include a sixth electrode 76 above and a seventh electrode 77 below the fourth electrode 74.

Since the multi-channel electrode proximity sensor 142 is composed of multi-channel electrodes, the amount of change in capacitance of each electrode varies according to the approaching direction of the object.

For example, when the user's hand approaches from the right side of the mobile terminal 100, the change amount of the seventh electrode 77 is the greatest, and when the object approaches in the Z-axis, or the right angle direction of the screen, the fourth electrode 74. The amount of change in capacitance is the largest.

In this way, it is possible to determine whether the object is close in which direction by checking the difference in capacitance change for each electrode, so that it is possible to recognize moving up, down, left, and right.

The number and size of electrodes of the multi-channel electrode proximity sensor 142 may be determined in consideration of the sensitivity performance of the electrodes. That is, the multi-channel electrode proximity sensor 142 may obtain more information about the direction as the size and number of each electrode are separated. On the other hand, each electrode should be set to a value larger than the change in the capacitance generated through the approach of the object can generate a minimum change in capacitance that can output the channel value. The distance and arrangement between each electrode can be appropriately determined according to the area of the bezel area.

For example, the multi-channel electrode proximity sensor 142 may include a center electrode having the largest size in the center, and one or more electrodes for sensing the x and y axes in the left and right sides of the center electrode. The multi-channel electrode proximity sensor 142 may be designed according to the margin and the situation of the bezel area based on this structure.

In the case of a mobile phone, the mounting area is very limited, but in the case of a table PC, since the electrode mounting area is wider, the margin for increasing the close distance may be more useful.

The controller 180 may collect a change in capacitance value for each channel by the multi-channel electrode proximity sensor 142, and perform gesture recognition by calculating a direction of an adjacent object based on the collected capacitance value. .

The controller 180 may calculate the direction of an object approaching the multi-channel electrode proximity sensor 142 through the sensor value of each channel. Since the multi-channel electrode proximity sensor 142 is used, malfunction can be effectively prevented without grounding.

The controller 180 can distinguish the approach to the Z-axis and the approach from the X- and Y-axis through an algorithm according to the capacitance change value acquired for each channel by the multi-channel electrode proximity sensor 142, thereby providing directivity. ) Can be secured.

According to an embodiment of the present invention, the above-described method may be implemented as code that can be read by a processor in a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet). Include.

The above-described mobile terminal is not limited to the configuration and method of the above-described embodiments, but the embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made. It may be.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by those equivalent to the claims.

Claims

A case having a front case and a rear case;
A frame disposed between the front case and the rear case;
A multi-channel electrode proximity sensor disposed at intervals in the upper bezel area of the frame and formed of electrodes separated into a plurality of channels; And
The change amount of the capacitance value is measured for each channel constituting the multi-channel electrode proximity sensor, and the position, direction, and distance of the object to be approached are calculated using the change amount of the capacitance value for each channel, And a controller configured to perform gesture recognition using the calculated position, direction, and distance.
The control unit
And calculating a difference between the change amount of the capacitance value for each of the channels to calculate the position, direction, and distance of the adjacent object.

The method of claim 1, wherein the multi-channel electrode proximity sensor
A mobile terminal comprising a center electrode positioned in a center region, at least one electrode disposed in left and right regions of the center electrode, and at least one electrode disposed in upper and lower regions of the center electrode.

The method of claim 1, wherein the control unit calculates the direction of the object approached by the multi-channel electrode proximity sensor by changing the capacitance value of each channel to distinguish the approach from the Z-axis and the approach from the X, Y-axis Mobile terminal.

The method of claim 1, wherein the multi-channel electrode proximity sensor,
A mobile terminal in which the number, size, and arrangement of electrodes are determined in consideration of the sensitivity of each electrode and the spatial arrangement of the bezel area.

In the gesture recognition method of a mobile terminal having a multi-channel electrode proximity sensor consisting of electrodes arranged in intervals in the bezel area and separated into a plurality of channels,
Measuring an amount of change in capacitance value for each channel constituting the multichannel electrode proximity sensor;
Calculating a position, a direction, and a distance of an object near by using a change amount of the capacitance value for each channel; And
Performing gesture recognition using the calculated position, direction, and distance
Including,
Calculating the position, direction and distance of the object
A gesture recognition method using an electrostatic sensor using a multi-channel electrode for calculating the difference between the change amount of the capacitance value for each of the channels to calculate the position, direction and distance of the adjacent object.