KR20090120774A - Mobile terminal and method of calibration sensitivity of proximity touch therefor - Google Patents

Abstract

PURPOSE: A mobile terminal and a recognition ratio correction method for the mobile terminal for securing the recognition ratio are provided to use a proximity touch function accurately by securing the recognition ratio about the difference of electrostatic card. CONSTITUTION: A display unit(151) equips a touch screen. A sensing unit connects proximity touch. A controller(180) corrects the recognition rate generated by the electrostatic capacity difference of a pointer. The maximum close location and the minimum close location are recognized within a close touch recognition area by using a mold having maximum and minimum height.

Description

MOBILE TERMINAL AND METHOD OF CALIBRATION SENSITIVITY OF PROXIMITY TOUCH THEREFOR}

The present invention relates to a method for improving the recognition rate of proximity-touch in a mobile terminal having a touch function.

The mobile terminal may be configured to perform various functions. Examples of such various functions include data and voice communication functions, taking pictures or videos through a camera, storing voices, playing music files through a speaker system, and displaying images or videos. Some mobile terminals include additional functionality to play games, while others are implemented as multimedia devices. Moreover, recent mobile terminals can receive broadcast or multicast signals to watch video or television programs.

In addition, efforts to support and increase the function of the mobile terminal continue. The foregoing efforts include additions and improvements in software or hardware as well as changes and improvements in the structural components forming the mobile terminal. Among them, the touch function of the mobile terminal enables the user who is unfamiliar with the button / key input using the touch screen to conveniently perform the operation of the terminal. Recently, not only simple input but also important functions of the terminal together with the user UI It is getting established as.

An object of the present invention is to provide a method for improving the recognition rate (Sensitivity) of the proximity touch when performing the operation of the terminal using the proximity touch.

A mobile terminal according to an embodiment of the present invention for realizing the above object includes a display unit having a touch screen; A sensing unit for detecting a proximity touch and a control unit for correcting the recognition rate caused by the capacitance difference of the pointer in the maximum proximity position and the minimum proximity position during proximity touch.

According to an aspect of the present invention, there is provided a method for correcting a proximity touch recognition rate of a mobile terminal, the method including: displaying a proximity touch correction screen; Detecting a touch by a pointer on the correction screen; Displaying a reference figure for correcting a recognition rate according to the detected touch and a guide circle that is increased or decreased according to the movement of the pointer; Compensating the maximum capacitance and the minimum capacitance by comparing the guide figure and the reference figure according to the change in the proximity position of the pointer.

According to an aspect of the present invention, there is provided a method for correcting a proximity touch recognition rate of a mobile terminal, the method including: displaying a proximity touch correction screen; Detecting solids having maximum and minimum heights on the correction screen; Setting the capacitance of the pointer touched at the maximum height of the solid to a minimum value of proximity touch; And setting the capacitance of the pointer touched at the minimum height of the solids to the proximity touch maximum value.

As described above, the present invention improves the recognition rate by correcting the recognition rate due to the difference in capacitance at the maximum proximity position and the minimum proximity position, so that the user can use the proximity touch function more accurately.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings.

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

The mobile terminal can be implemented in various forms. For example, the mobile terminal described herein includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP) and navigation, and the like. have.

The illustrated mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130 (or an operation unit), a sensing unit 140, an output unit 150, and a memory. 160, an interface unit 170, a controller 180, and a power supply unit 190 may be included. 1 illustrates a mobile terminal having various components. However, not all illustrated components are essential components. The mobile terminal may be implemented by more components than the illustrated components, or the mobile terminal may be implemented by fewer components.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more components for wireless communication between the mobile terminal 100 and the wireless communication system or wireless communication 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. 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 a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. 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.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and in this case, 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 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link (MediaFLO). Digital broadcast signals can be received using digital broadcasting systems such as only), digital video broadcast-handheld (DVB-H), integrated services digital broadcast-terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all broadcast systems providing broadcast signals as well as the digital broadcast system described above.

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

In addition, the mobile communication module 112 transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data 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 the wireless internet module 113 may be internal or external.

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, etc. may be used.

In addition, the location information module 115 is a module for checking or obtaining the location of the mobile terminal. One example is the Global Position System (GPS) module. The GPS module receives location information from a plurality of satellites. Here, the location information may include coordinate information represented by latitude and longitude. For example, the GPS module can measure the exact time and distance from three or more satellites and accurately calculate the current position by triangulating three different distances. A method of obtaining distance and time information from three satellites and correcting the error with one satellite may be used. In particular, the GPS module can obtain not only the location of latitude, longitude, and altitude but also accurate time together with three-dimensional speed information from the location information received from the satellite.

Meanwhile, 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 configuration aspect of the terminal.

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 a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 may determine the current state of the mobile terminal 100 such as the open / closed state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of a user contact, the orientation of the mobile terminal, the acceleration / deceleration of the mobile terminal, and the like. The sensing unit generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 190 is supplied with power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface with all external devices connected to the mobile terminal 100. 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, Video I / O (Input / Output) port, earphone port, etc. may be included.

Here, the identification module is a chip that stores various types of information for authenticating the use authority of the mobile terminal 100, and includes a user identification module (UIM) and a subscriber identify module (SIM). ), A Universal Subscriber Identity Module (“USIM”), and the like. In addition, the device equipped with the identification module (hereinafter, '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. The interface unit 170 receives data from an external device or receives power and transmits the data to each component inside the mobile terminal 100 or transmits the data inside the mobile terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal, and includes a display unit 151, a sound output module 152, an alarm unit 153, and the like.

The display unit 151 displays information processed by the mobile terminal 100. For example, when the mobile terminal is in a call mode, a user interface (UI) or a graphic user interface (GUI) related to a call is displayed. 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, or a GUI.

Meanwhile, as described above, when the display unit 13 and the touch pad form a mutual layer structure to form a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may include a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. 3D display). In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. For example, an external display unit (not shown) and an internal display unit (not shown) may be simultaneously provided in the mobile terminal 100.

The sound output module 152 outputs 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. In addition, the sound output module 152 outputs 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 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, and key signal input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. Through the vibration output as described above, the user can recognize the occurrence of the event. Of course, the signal for event occurrence notification may be output through the display unit 151 or the voice output module 152.

The memory 160 may store a program for processing and controlling the controller 180, and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). You can also perform a function.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.), 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 disk It may include at least one type of storage medium of the optical disk. In addition, the mobile terminal 100 may operate a web storage that performs a storage function of the memory 150 on the Internet.

The controller 180 typically controls the overall operation of the mobile terminal. For example, perform related control and processing for voice calls, data communications, video calls, and the like. In addition, 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 external power and internal power under the control of the controller 180 to supply power for the operation of each component.

The various embodiments described herein may be implemented in a computer readable recording medium 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 the functions. It 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. In addition, the software code may be stored in the memory 160 and executed by the controller 180.

 In the above, the mobile terminal related to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIGS. 2 and 3, the mobile terminal related to the present invention will be further described in terms of components according to appearance. Hereinafter, for simplicity, a slider type mobile terminal is described as an example among various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like. Therefore, the present invention is not limited to the slider type mobile terminal, but can be applied to all types of mobile terminals including the above-described type.

2 is a front perspective view of an example of a mobile terminal according to the present invention;

The mobile terminal of the present invention includes a first body 200 and a second body 205 configured to be slidable in at least one direction on the first body 200. In the case of the folder phone, the mobile terminal of the present invention includes a first body and a second body configured to be folded or unfolded at least one side of the first body.

A state in which the first body 200 is disposed to overlap the second body 205 may be referred to as a closed configuration, and as shown in the drawing, the first body 200 may be referred to as a second body ( An exposed state of at least a portion of 205 may be referred to as an open configuration. The mobile terminal mainly operates in a standby mode in a closed state, but the standby mode may be released by a user's operation. In addition, although the mobile terminal operates mainly in a call mode or the like in an open state, the mobile terminal may be switched to a standby mode by a user's manipulation or a lapse of a predetermined time.

The case (casing, housing, cover, etc.) forming the exterior of the first body 200 is formed by the first front case 220 and the first rear case 225. Various electronic components are embedded in the space formed by the first front case 220 and the first rear case 225. At least one intermediate case may be further disposed between the first front case 220 and the first rear case 225.

The cases may be formed by injecting a synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output module 152, the camera 121, or the first user input unit 210 may be disposed on the first body 200, specifically, the first front case 220.

The display unit 151 includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information.

In addition, since the touch pad is superimposed on the display unit 151 in a layer structure, the display unit 151 may operate as a touch screen to enable input of information by a user's touch.

The sound output module 152 may be implemented in the form of a speaker.

The camera 121 may be implemented to be suitable for capturing an image or a video of a user.

Like the first body 200, the case forming the exterior of the second body 205 is formed by the second front case 230 and the second rear case 235.

The second user input unit 215 may be disposed on the second body 205, specifically, on the front face of the second front case 230. A third user input unit 245, a microphone 122, and an interface unit 170 may be disposed on at least one of the second front case 230 or the second rear case 235.

The first to third user inputs 210, 215, and 245 may be collectively referred to as a manipulating portion 130, and may be any method if the user is tactile in a tactile manner. Either may be employed.

For example, the user input unit may be implemented as a dome switch or a touch pad that may receive a command or information by a user's push or touch operation, or may be operated by a wheel or jog or a joystick that rotates a key. May also be implemented.

In the functional aspect, the first user input unit 210 is for inputting a command such as start, end, scroll, etc., and the second user input unit 215 is for inputting numbers, letters, symbols, and the like.

In addition, the third user input unit 245 may operate as a hot-key for activating a special function in the mobile terminal.

The microphone 122 may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The interface unit 170 serves as a passage for allowing the mobile terminal according to the present invention to exchange data with an external device. For example, the interface unit 170 is wired or wirelessly, a connection terminal for connecting with an earphone, a port for short-range communication (for example, an infrared port (IrDA port), a Bluetooth port, a wireless LAN) Port (wireless Lan port), etc., or at least one of power supply terminals for supplying power to the mobile terminal.

The interface unit 170 may be a card socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) and a memory card for storing information.

The power supply unit 190 for supplying power to the mobile terminal is mounted on the second rear case 235 side.

The power supply unit 190 may be detachably coupled for charging, for example, as a rechargeable battery.

3 is a rear perspective view of the mobile terminal of FIG. 2.

Referring to FIG. 3, a camera 121 may be additionally mounted on the rear surface of the second rear case 235 of the second body 205. The camera 121 of the second body 205 has a photographing direction substantially opposite to that of the camera 121 of the first body 200, and different pixels from the camera 121 of the first body 200. Can have

For example, the camera 121 of the first body 200 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call or the like, and the camera 121 of the second body 200 is generally used. It is preferable to have a high pixel because the subject is often photographed and not immediately transmitted.

The flash 250 and the mirror 255 may be additionally disposed adjacent to the camera 121 of the second body 205. The flash 250 illuminates the subject when the subject is photographed by the camera 121 of the second body 205. The mirror 255 allows the user to see the user's face or the like when photographing (self-photographing) the user by using the camera 121 of the second body 205.

The sound output module 152 may be further disposed on the second rear case 235.

The sound output module 152 of the second body 205 may implement a stereo function together with the sound output module 152 of the first body 200, and may be used for a call in a speakerphone mode.

In addition, an antenna 260 for receiving broadcast signals may be disposed on one side of the second rear case 235. The antenna 260 may be installed to be pulled out of the second body 205.

A portion of the slide module 265 that slidably couples the first body 200 and the second body 205 is disposed on the first rear case 225 side of the first body 200.

The other part of the slide module 265 may be disposed on the second front case 230 side of the second body 205 and may not be exposed to the outside as shown in the drawing.

In the above description, the second camera 121 and the like have been described as being disposed in the second body 205, but the present invention is not limited thereto.

For example, at least one or more of the components 260, 121 to 250, and 152 described as being disposed on the second rear case 235, such as the camera 121 of the second body, may include the first body 200, It is also possible to be attached to the first rear case 225 mainly. If so, there is an advantage that the configuration (s) disposed in the first rear case 225 in the closed state are protected by the second body 205. Furthermore, even if the camera 121 of the second body is not provided separately, the camera 121 of the first body may be rotatably formed so that the camera 121 of the second body may be photographed up to the photographing direction of the camera 121 of the second body. .

The terminal 100 illustrated in FIGS. 1 to 3 may be operated in a communication system capable of transmitting data through a frame or packet, including a wired / wireless communication system and a satellite-based communication system. It can be configured to.

Hereinafter, referring to FIG. 4, a communication system capable of operating a terminal according to the present invention will be described.

The communication system may use different air interfaces and / or physical layers. For example, a radio interface usable by a communication system may include frequency division multiple access (FDMA), time division multiple access (TDMA), and code division multiple access (Code Division). Multiple Access (CDMA), Universal Mobile Telecommunications Systems (UMTS) (especially Long Term Evolution (LTE)), Global System for Mobile Communications (GSM), etc. May be included. Hereinafter, for convenience of description, the description will be limited to CDMA. However, it is a matter of course that the present invention is applicable to all communication systems including the CDMA wireless communication system.

As shown in FIG. 4, the CDMA wireless communication system includes a plurality of terminals 100, a plurality of base stations (BS) 270, and base station controllers (BSCs) 275. ), And a mobile switching center (MSC) 280. The MSC 280 is configured to be connected to a public switched telephone network (PSTN) 290 and is also configured to be connected to BSCs 275. The BSCs 275 may be coupled to the BS 270 through a backhaul line. The backhaul line may be provided according to at least one of E1 / T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs 275 may be included in the system shown in FIG.

Each BS 270 may include at least one sector, and each sector may include an omnidirectional antenna or an antenna pointing radially out of BS 270. In addition, each sector may include two or more antennas of various types. Each BS 270 may be configured to support a plurality of frequency assignments, each of which has a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sectors and frequency assignments may be called a CDMA channel. BS 270 may be referred to as a Base Station Transceiver Subsystem ('BTSs'). In this case, the word "base station" may be called the sum of one BSC 275 and at least one BS 270. The base station may also indicate “cell site”. Alternatively, each of the plurality of sectors for a particular BS 270 may be called a plurality of cell sites.

As shown in FIG. 4, a broadcasting transmitter (BT) 295 transmits a broadcast signal to terminals 100 operating in the system. The broadcast module 111 shown in FIG. 1 is provided in the terminal 100 to receive a broadcast signal transmitted by the BT 295.

In addition, FIG. 4 illustrates multiple satellite positioning systems (GPS) satellites 300. The satellites 300 help to locate the at least one terminal of the plurality of terminals 100. Although two satellites are shown in FIG. 4, useful location information may be obtained by two or less or more satellites. The GPS module 115 shown in FIG. 1 cooperates with the satellites 300 to obtain desired location information. Here, the location can be tracked using all the techniques that can track the location, not just the GPS tracking technology. In addition, at least one of the GPS satellites 300 may optionally or additionally be responsible for satellite DMB transmission.

During typical operation of a wireless communication system, BS 270 receives a reverse link signal from various terminals 100. At this time, the terminals 100 are connecting a call, transmitting or receiving a message, or performing another communication operation. Each of the reverse link signals received by a particular base station 270 is processed within by the particular base station 270. The data generated as a result of the processing is transmitted to the connected BSC 275. BSC 275 provides call resource allocation and mobility management functionality, including the organization of soft handoffs between base stations 270. In addition, the BSC 275 transmits the received data to the MSC 280, and the MSC 280 provides an additional transmission service for connection with the PSTN 290. Similarly, PSTN 290 connects with MSC 280, MSC 280 connects with BSCs 275, and BSCs 275 send BSs 270 to transmit a forward link signal to terminals 100. ).

An information input method using proximity touch and / or real-touch in the mobile terminal configured as described above will be described.

Proximity-touch in the present invention means that the pointer is approached a predetermined distance away from the screen without actually touching the screen. Preferably the pointer comprises a tool for actually touching or proximity touching a particular portion of the display screen, ie a stylus fan, finger or the like.

As illustrated in FIG. 1, the controller 180 according to an embodiment of the present invention may recognize a proximity touch as a predetermined signal input and perform a control operation of a mobile terminal. That is, the mobile terminal 100 according to an embodiment of the present invention recognizes this as a proximity touch when the pointer approaches within a predetermined distance range from the screen. For example, various list views and automatic input functions (ex ID and Password) represents a vertical distance between the pointer and the screen.

In the present invention, a real touch refers to a case in which a pointer is actually touched on the screen. The actual touch is achieved by having a touch screen on the display. In this case, the controller 180 may recognize the actual touch as a predetermined signal input and perform a control operation of the mobile terminal.

As shown in FIG. 1, the mobile terminal 100 according to an embodiment of the present invention may detect a proximity touch and an actual touch through the sensing unit 140. The sensing unit 140 may include various sensors to perform various sensing functions, and may include a proximity sensor and a tactile sensor to detect a proximity touch and an actual touch.

The proximity sensor detects the presence or absence of an object approaching the detection surface of the switch or an object present in the vicinity without using mechanical force by using electromagnetic force or infrared rays. Preferably, the proximity sensor may be configured as a proximity switch that emits an ON / OFF output when a sensing object comes within a predetermined sensing distance for each sensor without mechanical contact, unlike the ON / OFF output through mechanical contact.

Therefore, the proximity sensor composed of the proximity switch has a considerably longer life and a higher utilization than the contact switch. The operating principle of the proximity sensor composed of the proximity switch oscillates the high frequency wave of the wave in the oscillation circuit, and when the sensing object approaches the sensor sensing surface, the oscillation amplitude of the oscillation circuit is attenuated or stopped. The presence or absence of the sensing object is detected.

The tactile sensor refers to a sensor that detects contact of a specific object to a degree that the human feels or more. The tactile sensor may sense various information such as the roughness of the contact surface, the rigidity of the contact object, the temperature of the contact point, and the like.

The sensing unit 140 may detect a proximity distance and a proximity speed as a detailed operation of the proximity touch. Proximity means the distance from the screen and the pointer. In particular, the minimum proximity distance means the shortest distance away from the screen and the pointer. In addition, the proximity speed includes a speed at which the pointer approaches the screen or a speed at which the pointer moves away from the screen.

In addition, the sensing unit 140 may detect a touch drag or a proximity-drag in relation to the actual touch and / or the proximity touch. The sensing unit 140 may detect a drag direction, a drag speed, a drag length of a touch drag and / or a close drag. The touch drag refers to a case in which the touch point is dragged while the actual touch is maintained, and the proximity drag refers to a case in which the touch point is dragged while the proximity touch is maintained.

In addition, in the exemplary embodiment of the present invention, that a certain point of the screen is in close proximity means that the pointer is located at a position on a space corresponding to the predetermined point and is recognized as a proximity touch.

Hereinafter, an example in which the mobile terminal 100 includes a touch screen will be described.

The mobile terminal 100 according to an embodiment of the present invention may control an information input function by using a proximity touch, and control a screen display based on a relationship between an actual touch and a proximity touch. For example, the screen may be scrolled, the screen zoomed, the screen rotated, and the information displayed based on the relationship between the actual touch and the proximity touch.

The proximity touch sensor (proximity sensor) detects a proximity touch according to a change in capacitance generated when the body contacts the surface of the touch screen. 5 is an example of dividing a proximity touch detection area detected by a proximity sensor into a plurality of proximity locations (or proximity distances) according to the present invention. In FIG. 5, the number of proximity positions may vary depending on the performance of the proximity sensor and a control target. In the present invention, four proximity positions D0 to D3 are illustrated. In this case, the proximity touch refers to a state in which the pointer is located at an outer region of each of the proximity distances D0 to D3.

However, not all people generate the same capacitance when the human body approaches the touch screen in the proximity touch sensing region shown in FIG. 5, that is, a small change value of capacitance generated when the human body approaches each other. The difference between and the setting value occurs. Therefore, even when the user moves in the proximity touch sensing region, a recognition rate difference occurs for each person, and thus, it is necessary to calibrate the recognition rate of the proximity touch sensor to suit each user.

In order to perform the method according to the present invention, the proximity correction screen may be displayed on the display unit 151 of the mobile terminal. Preferably, the proximity correction screen may be displayed through a separate key input or touch in a menu, and the proximity correction screen may include a predetermined value indicating a maximum proximity touch position (minimum height) and a minimum proximity touch position (maximum height) of the pointer. Reference figures (circles and various polygons) and guide figures whose size changes as the pointer moves are displayed. In this case, the pointer represents any one of a tool for actually touching or proximity touching a specific portion of the display screen, that is, a stylus fan or a finger.

The guide figure is displayed as a dot when the pointer is actually touched, and the size of the guide figure is changed to the same shape as the reference figure when the pointer is touched in close proximity.

In addition, the present invention may be used to correct the difference in recognition rate caused by the difference in proximity distance by using a solid that can make the maximum / minimum height constant. In this case, the solid is made of a material that does not change the capacitance generated when the body is in contact.

6 is a flowchart illustrating a method of calibrating a recognition rate of a proximity touch in a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 6, the controller 180 may display a screen for correcting the recognition rate of the proximity touch according to the user's touch (or according to a separate key input) (S10). When a touch is detected in the state where the screen is shown, the controller 180 determines whether the corresponding touch is an actual touch (S11).

As a result of the determination, when the actual touch is generated, the controller 180 displays, for example, the first reference circle as a predetermined reference figure indicating a touch point (a guide circle when the finger is removed from the screen) and a minimum proximity position (S12). The minimum proximity position corresponds to the outermost position D3 in FIG. 5, wherein the touch point is changed to a guide circle when the finger is moved off the screen, and the guide circle is gradually increased in size with the same shape as the first reference circle. .

Therefore, when the pointer moves away from the touch point of the touch screen and moves away from the screen, the size of the guide circle also increases as the proximity position (or proximity distance) increases (S13). In this case, the pointer represents any one of a tool for actually touching or proximity touching a specific portion of the display screen, that is, a stylus fan or a finger.

Then, when the proximity position is further increased so that the size of the guide circle becomes the same as the size of the first base circle, the controller 180 sets the capacitance at the corresponding position to the capacitance at the minimum proximity position, thereby approaching the proximity touch. The minimum value is corrected (S14).

On the other hand, when the proximity touch is generated in step S11, the controller 180 displays a guide circle indicating a proximity position and a second reference circle, which is a predetermined reference figure indicating a maximum proximity position, on the screen (S15). . The maximum proximity position corresponds to the outermost D0 in FIG. 5.

When the pointer approaches the touch point of the touch screen in this state, the size of the guide circle becomes smaller as the proximity position (or proximity distance) decreases (S16). Then, when the proximity position is further reduced so that the size of the guide circle is equal to the size of the second reference circle, the capacitance at the corresponding position is set to the capacitance at the maximum proximity position so that the proximity touch maximum value is corrected ( S17).

7 is a flowchart illustrating a method of setting a proximity touch minimum value in FIG. 6 in detail.

As illustrated in FIG. 7, the controller 180 displays a screen for correcting the recognition rate of the proximity touch according to a user's touch (or according to a separate key input).

When the finger touches the touch screen on the screen, the controller 180 displays one reference circle indicating the minimum proximity position together with the corresponding touch point (S20 and S21).

As the finger moves away from the screen in this state, the touch point changes to a guide circle, and its size increases as the proximity position (or proximity distance) increases (S22 and S23).

Thereafter, when the finger is further away from the screen, the controller 180 compares whether the size of the guide circle 52 is equal to the size of the first reference circle (S24). When the size is equal to the size of the first reference circle, the controller 180 recognizes that the finger has reached the minimum proximity position, and corrects the capacitance at the corresponding position to the minimum proximity touch value (S25).

8 is a diagram illustrating an example of performing the method illustrated in FIG. 7.

When a finger is touched on the recognition rate correction screen, the controller 180 displays one reference circle 51 indicating a minimum proximity position together with the touch point 50.

In this state, when the finger is removed from the screen, the touch point 50 changes to the guide circle 52. The guide circle 52 increases or decreases in size as the proximity position (or proximity distance) increases or decreases.

Thereafter, when the finger is further away from the screen and becomes equal to the size of the guide circle 52 and the size of the first reference circle, the controller 180 recognizes that the finger has reached the minimum proximity position, The capacitance is corrected by the minimum proximity touch.

Through this method, the present invention improves the recognition rate by correcting the recognition rate due to the difference in capacitance so that the user can use a more accurate proximity touch function.

9 is a flowchart illustrating a method of setting a proximity touch minimum value in FIG. 6 in detail.

As illustrated in FIG. 9, the controller 180 may display a screen for correcting the recognition rate of the proximity touch according to a user's touch (or according to a separate key input). In addition, the operation of FIG. 9 may be continuously performed in connection with the operation of FIG. 7. When approaching the proximity touch detection area on the screen, the controller 180 displays one guide circle representing the current proximity position and a reference circle representing the maximum proximity position on the screen (S30 and S31). The maximum proximity position corresponds to the innermost D0 in FIG. 5.

In this state, as the finger gets closer to the screen, the size of the guide circle becomes smaller as the proximity position (or proximity distance) increases (S32, S33).

Thereafter, when the finger is closer to the screen, the controller 180 compares whether the size of the guide circle 52 is equal to the size of the first reference circle (S34). When the size is equal to the size of the first reference circle, the controller 180 recognizes that the finger has reached the maximum proximity position D0 and corrects the capacitance at the location to the maximum proximity touch value (S35).

FIG. 10 is a diagram illustrating an example of performing the method illustrated in FIG. 9.

When the finger is in close proximity in the state where the proximity touch minimum value is corrected or the recognition rate correction screen, the controller 180 displays the guide circle 52 representing the proximity position and the reference circle 53 representing the maximum proximity position.

In this state, when the finger approaches the screen, the size of the guide circle 52 is further reduced as the proximity position (or proximity distance) decreases.

Then, when the finger is closer to the screen, and the same size as the size of the guide circle 52 and the size of the first reference circle, the controller 180 recognizes that the finger has reached the maximum proximity position, The proximity touch maximum value corrects the capacitance. Through this method, the present invention improves the recognition rate by correcting the recognition rate due to the difference in capacitance so that the user can use a more accurate proximity touch function.

In an embodiment of the present invention, the operation of FIG. 7 may be performed first, the operation of FIG. 9 may be performed later, the operation of FIG. 9 may be performed first, and the operation of FIG. 7 may be performed later. That is, when the actual touch is first performed on the recognition rate correction screen, the process proceeds to FIG. 7 → FIG. 9, and when the proximity touch is first performed, FIG. 9 → FIG. 7. Accordingly, the reference source and guide member appearing on the screen are determined.

In the recognition rate correction method illustrated in FIGS. 6 to 10, the finger reaches the minimum proximity position or the maximum proximity position through comparison between the reference circle and the guide circle, and then sets the minimum and maximum proximity touches at the corresponding positions. Or corrected). The present invention is not limited thereto, and the present invention may allow everyone to have the same minimum proximity position or maximum proximity position, and set (or correct) the touch minimum value and the maximum value at the corresponding position. The solid material is a non-conductor having a maximum height and a minimum height, as shown in FIG. 11, and is composed of a material (non-conductor, thimble, etc.) and a shape (ring) that do not affect capacitance measurement of a finger.

12 is a flowchart illustrating a method of calibrating a recognition rate of a proximity touch using a solid having a maximum height and a minimum height, and FIG. 13 is a diagram illustrating an example of performing the method illustrated in FIG. 9.

12 and 13, the user places the solids 54 having the maximum height and the minimum height on the touch screen in a mode for calibrating the recognition rate of the proximity touch. The controller 180 detects the position of the solid 54 and sets the capacitance of the finger touched at the maximum height of the solid 54 to the closest touch minimum value (S40, S41) and the minimum of the solid 54. The capacitance of the finger touched by the height is set to the maximum proximity touch value (S42).

In addition, according to an embodiment of the present invention, the recognition rate calibration method of the proximity touch can be implemented as computer readable codes on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes. In addition, the computer may include the controller 180 of the terminal.

The mobile terminal according to the present invention as described above is not limited to the configuration and method of the embodiments described above, the embodiments of the present invention may be selectively all or part of each embodiment so that various modifications can be made It may be configured in combination.

1 is a block diagram of a mobile terminal according to one embodiment of the present invention;

2 is a front perspective view of a mobile terminal according to an embodiment of the present invention;

3 is a rear perspective view of a mobile terminal according to one embodiment of the present invention;

4 is a block diagram of a wireless communication system in which a mobile terminal according to an embodiment of the present invention may operate.

5 is an example of dividing a proximity touch detection area detected by a proximity sensor into a plurality of proximity positions in the present invention.

6 is a flowchart illustrating a method of calibrating a recognition rate of a proximity touch in a mobile terminal according to an embodiment of the present invention.

7 is a flowchart illustrating a method of setting a proximity touch minimum value in FIG. 6 in detail.

8 shows an example of performing the method shown in FIG.

9 is a flowchart illustrating a method of setting a proximity touch minimum value in FIG. 6 in detail.

FIG. 10 shows an example of performing the method shown in FIG. 9. FIG.

11 illustrates an example of a solid having a maximum height and a minimum height.

12 is a flowchart illustrating a method of calibrating a recognition rate of a proximity touch using a solid having a maximum height and a minimum height in a mobile terminal according to an embodiment of the present invention.

FIG. 13 shows an example of performing the method shown in FIG. 9. FIG.

******* Description of the symbols for the main parts of the drawing ********

110: wireless communication unit 111: broadcast receiving module

112: mobile communication module 113; Wireless Internet Module

140; Sensing unit 150: output unit

151: display unit 160: memory

180: control unit

Claims (16)

A display unit having a touch screen; A sensing unit detecting a proximity touch; And a control unit for correcting a recognition rate caused by a difference in capacitance of a pointer at a maximum proximity position and a minimum proximity position during a proximity touch. The method of claim 1, wherein the pointer is Mobile terminal, characterized in that any one of the stylus fan, the finger. The method of claim 1, wherein the maximum proximity position and the minimum proximity position is A mobile terminal, characterized by recognizing a change in proximity position of a point within a proximity touch detection area or by using solids having maximum and minimum heights. The method of claim 1, wherein the control unit A reference figure indicating a maximum proximity position and a minimum proximity position, and a guide circle that increases or decreases according to the movement of the pointer, and displays the maximum capacitance and the minimum capacitance when the guide figure matches the reference figure by increasing or decreasing the proximity position. A mobile terminal, characterized in that the setting. The method of claim 4, wherein the reference figure is A mobile terminal comprising a circle and a polygon. The method of claim 4, wherein the control unit When the actual touch is detected, the reference figure indicating the minimum proximity position and the guide circle increased according to the movement of the pointer are displayed. When the proximity touch is detected, the reference figure indicating the maximum proximity position and the guide circle decreased according to the movement of the pointer. Mobile terminal, characterized in that for displaying. The method of claim 1, wherein the control unit When solids with maximum and minimum positions are placed on the touch screen The mobile terminal, characterized in that for correcting the minimum capacitance when the pointer touches the maximum position, and corrects the maximum capacitance when the pointer touches the minimum position. The method of claim 6, wherein the solid is Mobile terminal, characterized in that consisting of a material that does not affect the capacitance. Displaying a proximity touch correction screen; Detecting an initial touch by a pointer on the correction screen; Displaying different reference figures for correcting a recognition rate according to the type of the detected touch, and a guide circle that increases or decreases according to the movement of the pointer; And comparing the guide figure and the reference figure according to a change in the proximity position of the pointer, and correcting the maximum capacitance and the minimum capacitance. The method of claim 9, wherein the reference figure is Proximity touch recognition rate correction method of a mobile terminal comprising a circle and a polygon. 10. The method of claim 9, wherein the pointer is one of a stylus fan and a finger. The method of claim 9, wherein if the detected touch is an actual touch, a reference figure indicating a minimum proximity position and a guide circle increased according to the movement of the pointer are displayed. 10. The method of claim 9, wherein if the detected touch is a proximity touch value, a reference figure indicating a maximum proximity position and a guide circle reduced according to the movement of the pointer are displayed. 10. The method of claim 9, wherein correcting the capacitance And adjusting the maximum capacitance and the minimum capacitance when the guide figure coincides with the reference figure by increasing or decreasing the proximity position. Displaying a proximity touch correction screen; Detecting solids having maximum and minimum heights on the correction screen; Setting the capacitance of the pointer touched at the maximum height of the solid to a minimum value of proximity touch; And setting the capacitance of the pointer touched at the minimum height of the solids to the maximum value of the proximity touch. The method of claim 15, wherein the solid is A proximity touch recognition rate correction method for a mobile terminal, characterized in that the material is made of a material that does not affect the capacitance.

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