KR20120117063A - Mobile terminal and method for determinating position thereof - Google Patents

Abstract

PURPOSE: A portable terminal and location determination method thereof are provided to accurately determine the location of a portable terminal by comparing the location of the portable terminal with the location of an RFID(Radio Frequency Identification) tag. CONSTITUTION: A wireless communication unit(110) receives an RFID signal from one or more RFID tags. A control unit(180) determines the relative location of a portable terminal for one or more RFID tags using each RFID signal. The control unit determines the current location of the portable terminal using the relative location of the portable terminal for the RFID tag and the location information of the RFID tag. The control unit displays the current location of the determined portable terminal on a display unit. [Reference numerals] (110) Wireless communication unit; (111) Broadcast reception module; (112) Mobile communication module; (113) Wireless internet module; (114) Local communication module; (115) Location information module; (116) Internal RFID reader; (120) A/V input unit; (121) Camera; (122) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (150) Output unit; (151) Display unit; (152) Sound effect output module; (153) Alarm unit; (154) Haptic module; (155) Projector module; (160) Memory; (170) Interface unit; (180) Control unit; (181) Multimedia module; (190) Power supply unit

Description

MOBILE TERMINAL AND METHOD FOR DETERMINATING POSITION THEREOF}

The present invention relates to a mobile terminal for determining a current position using an RFID tag and a method for determining the position thereof.

The terminal can move And may be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

As the terminal functions are diversified, for example, the form of a multimedia player having complex functions such as taking a picture or video, playing a music or video file, playing a game, receiving a broadcast, etc. Is implemented.

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

Recent terminals may include a GPS module for determining the location of the terminal. In the case of including the GPS module, even if the terminal moves, it may provide a function to determine the current location. However, when using the GPS module, there is a problem in that the current position of the terminal cannot be accurately determined when the terminal is indoors, and even if the terminal is located outdoors, the current position of the terminal cannot be accurately determined according to the location where the terminal is located.

The present invention relates to a mobile terminal for determining a location by using an RFID tag. The present invention relates to a mobile terminal for determining a location of a mobile terminal by using a location and a relative location of the RFID tag. It is to provide a mobile terminal and a position determination method that can be.

Another object of the present invention is to provide a mobile terminal and a location determination method capable of directly providing a location of a mobile terminal determined using an RFID tag through a mobile terminal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, there is provided a mobile terminal including a display unit, a wireless communication unit receiving an RFID signal including location information of the RFID tag from at least one Radio Frequency Identification (RFID) tag, and The relative position of the mobile terminal with respect to each of the at least one RFID tag is determined using the respective RFID signals, and the position information of the RFID tag included in the RFID signal and the relative position of the mobile terminal with respect to the RFID tag are determined. And a controller configured to determine a current position of the mobile terminal by using the controller, and to control the current position of the mobile terminal to be displayed on the display unit, wherein the RFID tag may prestore the position information of the RFID tag. On the other hand, the location information of the RFID tag may be stored in the form of a unique feature identifier (UFID).

The controller analyzes the RFID signal received from a specific RFID tag, and determines a relative position between the specific RFID tag and the mobile terminal by determining a distance and a direction between the specific RFID tag and the mobile terminal according to the analysis result. It may be.

Alternatively, the control unit analyzes the RFID signals received from each of the plurality of RFID tags, and determines the distance between each of the plurality of RFID tags and the mobile terminal according to the analysis result, and the plurality of RFID tags. The relative positions of the plurality of RFID tags and the mobile terminal may be determined by combining the respective distances of the respective mobile terminals. Here, the controller may determine the relative positions of the plurality of RFID tags and the mobile terminal by using a triangulation method for each distance between each of the plurality of RFID tags and the mobile terminal.

The display unit may display a map image corresponding to an area including a current location of the mobile terminal, and display the current location of the mobile terminal on the map image. The mobile terminal may further include a memory for pre-store a map image. The map image may include at least one of a road image and a building interior image.

The controller may control to provide information on the specific target point from the current position of the mobile terminal when the input is received for the specific target point.

The display unit may display the location of each of the at least one RFID tag using the location information of the at least one RFID tag.

The wireless communication unit may transmit information on the current location of the mobile terminal to an external server, and the external server may provide a specific service by combining information on the current location from a plurality of mobile terminals.

According to another aspect of the present invention, there is provided a method of determining a location, comprising: receiving an RFID signal including location information of the RFID tag from each of at least one radio frequency identification (RFID) tag, each of the RFIDs Determining a relative position of the mobile terminal with respect to each of the at least one RFID tag using a signal, using the position information of the RFID tag included in the RFID signal and the relative position of the mobile terminal with respect to the RFID tag. Determining the current location of the mobile terminal, and displaying the determined current location of the mobile terminal.

Since the mobile terminal according to at least one embodiment of the present invention configured as described above can receive the location information of the RFID tag and directly determine the location of the mobile terminal directly without having to go through an external server, the mobile terminal can be accurately and quickly. There is an effect that can determine the location of the mobile terminal.

In addition, the mobile terminal according to at least one embodiment of the present invention configured as described above has an effect of clearly representing the determined position on various map images such as buildings and roads.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
Figure 2a is a front perspective view of a mobile terminal according to an embodiment of the present invention.
2b is a rear perspective view of a mobile terminal according to one embodiment of the present invention;
3A and 3B are front views of a mobile terminal for explaining an operation state of the mobile terminal according to the present invention.
4A and 4B illustrate RFID technology in connection with the present invention.
5 is a flow chart showing the flow of the position determination method related to the present invention.
6 illustrates an example of determining a location of a mobile terminal using an RFID tag according to the present invention.
FIG. 7 illustrates another example of determining a location of a mobile terminal using an RFID tag according to the present invention. FIG.
8 illustrates a manner of displaying a position determined in connection with the present invention.
9 illustrates an example of utilizing location information determined in connection with the present invention.
10 illustrates another example of utilizing location information determined in connection with the present invention.
11 illustrates an operation of displaying an RFID tag in accordance with the present invention.
12 illustrates an operation of using location information of an RFID tag in accordance with the present invention.
FIG. 13 illustrates an operation for recording information utilizing a footprint in connection with the present invention. FIG.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. 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.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the 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 an internal RFID reader 116. ) May be included.

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 refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

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). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting 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.

The mobile communication module 112 transmits and receives radio signals to 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 depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. 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. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

The internal RFID reader 116 provides a role of identifying an externally located RFID tag and transmitting and receiving a signal of the RFID tag.

Referring to FIG. 1, an A / V (Audio / Video) 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 can 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 depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a 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.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And 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, 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 a proximity sensor 141.

The output unit 150 is for generating an output relating to visual, auditory or tactile sense and includes a display unit 151, an acoustic output module 152, an alarm unit 153, a haptic module 154, 155, and the like.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

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 may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another, or may be disposed integrally with one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. Can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

The proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor 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. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

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 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

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

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of the vibration generated by the haptic module 154 are controllable. For example, different vibrations may be synthesized and output or 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 an injection or inlet port, grazing to the skin surface, contact of an 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 projector module 155 is a component for performing an image project function using the mobile terminal 100 and is similar to the image displayed on the display unit 151 in accordance with a control signal of the controller 180 Or at least partly display another image on an external screen or wall.

Specifically, the projector module 155 includes a light source (not shown) that generates light (for example, laser light) for outputting an image to the outside, a light source And a lens (not shown) for enlarging and outputting the image at a predetermined focal distance to the outside. Further, the projector module 155 may include a device (not shown) capable of mechanically moving the lens or the entire module to adjust the image projection direction.

The projector module 155 can be divided into a CRT (Cathode Ray Tube) module, an LCD (Liquid Crystal Display) module and a DLP (Digital Light Processing) module according to the type of the display means. In particular, the DLP module may be advantageous for miniaturization of the projector module 151 by enlarging and projecting an image generated by reflecting light generated from a light source on a DMD (Digital Micromirror Device) chip.

Preferably, the projector module 155 may be provided longitudinally on the side, front or back side of the mobile terminal 100. It goes without saying that the projector module 155 may be provided at any position of the mobile terminal 100 as occasion demands.

The memory unit 160 may store a program for processing and controlling the control unit 180 and temporarily store the input / output data (e.g., telephone directory, message, audio, For example. The memory unit 160 may also store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia). In addition, the memory unit 160 may store data on vibration and sound of various patterns output when the 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), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an 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 for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

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.

The various embodiments described herein may be embodied 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. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

2A is a perspective view of an example of a mobile terminal or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injecting 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 unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, and the interface 170 may be disposed in the terminal body, mainly the front case 101. have.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of operation units 131 and 132. The manipulation units 131 and 132 may also be collectively referred to as manipulating portions, and may be employed in any manner as long as the user operates the tactile manner with a tactile feeling.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 are further disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output unit 152 (see FIG. 2A), and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for talking and the like, a broadcast signal receiving antenna 116 may be further disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable terminal 100 is mounted on the terminal body. The power supply unit 190 may be embedded in the terminal body or may be directly detachable from the outside of the terminal body.

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may also be of a light transmission type like the display unit 151. [ In this case, if the display unit 151 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102 as well.

Hereinafter, the operation of the display unit 151 and the touch pad 135 will be described with reference to FIGS. 3A and 3B.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be referred to as a so-called " virtual keypad ".

3A illustrates receiving a touch applied to the virtual keypad through the front of the terminal body.

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window 151a and an input window 151b are displayed on the upper and lower portions of the display unit 151, respectively. The output window 151a and the input window 151b are areas allocated for outputting or inputting information, respectively. In the input window 151b, a virtual keypad 151c is displayed in which a number for inputting a telephone number or the like is displayed. When the virtual keypad 151c is touched, numbers and the like corresponding to the touched virtual keypad are displayed on the output window 151a. When the first operation unit 131 is operated, call connection to the telephone number displayed on the output window 151a is attempted.

3B illustrates receiving a touch applied to the virtual keypad through the rear of the terminal body. If FIG. 3A is a portrait in which the terminal body is arranged vertically, FIG. 3B illustrates a landscape in which the terminal body is arranged horizontally. The display unit 151 may be configured to convert the output screen according to the arrangement direction of the terminal body.

3B shows that the text input mode is activated in the mobile terminal. The display unit 151 displays an output window 151a 'and an input window 151b'. A plurality of virtual keypads 151c 'displaying at least one of letters, symbols, and numbers may be arranged in the input window 151b'. The virtual keypads 151c 'may be arranged in the form of a QWERTY key.

When the virtual keypads 151c 'are touched through the touch pad 135 (refer to FIG. 2B), letters, numbers, and symbols corresponding to the touched virtual keypads are displayed on the output window 151a'. As described above, the touch input through the touch pad 135 has an advantage of preventing the virtual keypad 151c 'from being covered by the finger when touched, as compared with the touch input through the display unit 151. When the display unit 151 and the touch pad 135 are transparent, the fingers located at the rear of the terminal body can be visually checked, and thus more accurate touch input is possible.

The display unit 151 or the touch pad 135 may be configured to receive a touch input by scrolling, as well as the input method described in the above embodiments. The user can move a cursor or a pointer located on an object displayed on the display unit 151, for example, an icon or the like, by scrolling the display unit 151 or the touch pad 135. [ Further, when the finger is moved on the display portion 151 or the touch pad 135, the path along which the finger moves may be visually displayed on the display portion 151. [ This will be useful for editing the image displayed on the display unit 151. [

One function of the terminal may be executed in response to a case where the display unit 151 (touch screen) and the touch pad 135 are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the terminal body using the thumb and index finger. The one function may be activation or deactivation of the display unit 151 or the touch pad 135, for example.

In relation to the present invention, a first look at RFID technology.

RFID (Radio Frequency Identification) technology generally has information about the whole process of production, distribution, storage, and consumption on RFID tags attached to a specific product, and the RFID reader reads this information and uses the information. it means.

Looking at the configuration of the RFID, the RFID tag including a variety of information, such as production, distribution, storage, consumption for a specific product, consisting of an RFID reader that can read the information of the RFID tag, optionally the RFID reader read It can be configured as an RFID server for processing, storing, transmitting and receiving a piece of information.

In the case of RFID technology, a user can easily use, recognize multiple tags at the same time, and can recognize a high speed, thereby saving time. In addition, since the sensing distance is long, it is easy to apply according to system characteristics or environmental conditions, and may be used semi-permanently because it is non-contact.

RFID tags are similar to smart cards in terms of storing data, but there are differences in that power and contacts for data exchange are made by magnetic fields or electromagnetic fields.

RFID technology can target a single product, but can apply multiple products simultaneously. For example, in a logistics system that needs to identify a large number of objects, each object may be equipped with an RFID tag, and a number of individual RFID tags may be simultaneously identified.

4A-4B are diagrams illustrating RFID technology in connection with the present invention.

First, FIG. 4A is a diagram illustrating an RFID tag in an RFID technology configuration.

The RFID tag may include various state information about the product or article to which the RFID tag is attached. For example, it may include information about the product or the article itself, such as the name, item, quantity, price of the product or article. It may also include information about the environment or state where the product or article is located, that is, information about the environment or state where the RFID tag is located, as well as information about the product or article itself. In the present invention, the RFID tag may include location information. The location information may be information on a location where an RFID tag is installed.

The article or place where the RFID tag is installed may be moved or fixed. Assuming a fixed case, the RFID tag may include information about the fixed position. On the contrary, assuming that it is moved, the RFID tag can store location information that is continuously changed as the article on which the tag is installed is moved.

Looking at the configuration of the RFID tag 400, the RFID tag 400 includes an antenna 402, a processor 404, a sensor 406, and a memory 408. Here, the antenna 402 serves to transmit and receive information or signals with the RFID reader. The memory 408 may store state information indicating an environment or state in which the RFID tag 400 is located, and may also store identification information of the RFID tag. The RFID reader may identify a specific RFID tag using the identification information stored in the memory of the RFID tag. The sensor 406 can determine the environment of the RFID tag. For example, the sensor 406 may detect the temperature, pressure, brightness, etc. of the environment in which the RFID tag 400 is located, and may generate the numerical information by quantifying it. Sensor 406 may be an active sensor that consumes power as needed. In addition, the sensor 406 may additionally have a GPS sensor function, thereby generating the position of the RFID tag 400 as status information. Finally, the processor 404 can control the functions of the antenna 402, the sensor 406, and the memory 408 described above.

4B is a diagram illustrating an operation in which an RFID reader reads state information on an RFID tag from an RFID tag.

In the figure, an RFID tag 400 and a product 410 to which the RFID tag 400 is attached are shown. Also shown is a mobile terminal 100 having the function of an RFID reader for identifying an RFID tag and receiving an RFID signal from the RFID tag. The mobile terminal 100 may receive an RFID signal for the RFID tag from the RFID tag 400 using the wireless communication unit 110 or the internal RFID reader 116. .

The mobile terminal 100 of the present invention may include an RFID reader and may directly receive an RFID signal from the RFID tag 400. Therefore, when the RFID tag 400 is present in the proximity, the RFID reader 116 or the wireless communication unit 110 of the mobile terminal 100 may not only confirm the existence of the RFID tag 400 but also receive the RFID signal. Can be received.

5 is a flow chart showing the flow of the position determination method related to the present invention.

The wireless communication unit 110 receives the RFID signal from the RFID tag (S510). The controller 180 determines a relative position between the RFID tag and the mobile terminal using the stored RFID signal (S520). The controller 180 determines the current position of the mobile terminal by using the position information of the RFID tag and the relative position between the RFID tag and the mobile terminal (S530). The display unit 151 displays the current location of the mobile terminal (S540).

Hereinafter, each step for determining the current position of the mobile terminal will be described below.

As described above, the RFID tag 400 may store location information. The location information is location information on the place where the RFID tag 400 is installed. The location information stored by the RFID tag 400 may include all kinds of information that can describe a corresponding place such as a name, an address, latitude or longitude information, and an altitude of the corresponding place.

Location information that can be stored in the RFID tag may include a unique feature identifier (UFID).

UFID is a unique number assigned to a feature by a geographic information system. It assigns a unique number composed of a combination of numbers to artificial and natural features such as buildings, roads, rivers, and bridges.As a geographical identifier, various properties are provided by geographical area as well as by administrative district, map map, and administrative institution. Can be used to verify / print information. It also serves as a connector that integrates with the feature database by being used as basic information for location-based services (LBS).

UFID information may be stored in the form of a chip of the RFID tag and artificial features and natural features such as buildings, roads, rivers, bridges are assigned a UFID number. When location information based on the UFID information is stored in the RFID tag 400, the exact place where the RFID tag 400 is located may be identified using the UFID information from the RFID tag. Since the present invention determines the position of the mobile terminal 100 using the position of the RFID tag 400 as a base point, it is necessary to grasp the exact position of the RFID tag 400.

Meanwhile, the location information stored by the RFID tag 400 may be information using GPS. Accordingly, even if the RFID tag 400 is installed in the item to be moved, the RFID tag can store the current location information by using the GPS, and the RFID reader which obtains the information therefrom may check the corresponding location.

FIG. 6 illustrates an example of determining a location of a mobile terminal using an RFID tag according to the present invention.

In connection with the present invention, when the RFID tag 400 is located in the vicinity, the mobile terminal 100 confirms the existence of the RFID tag 400 and receives the location information of the RFID tag 400 from the RFID tag 400. can do. Here, as an example of determining the position of the mobile terminal, the position of the RFID tag 400 may be determined as the position of the mobile terminal 100. That is, when the mobile terminal 100 recognizes the specific RFID tag 400, the location corresponding to the location information stored by the specific RFID tag 400 may be determined as the location of the mobile terminal.

The mobile terminal 100 of the present invention may be set to determine the existence of the RFID tag 400 only when the RFID tag 400 is a specific distance (for example, 1 m or less) from the mobile terminal 100. In addition, when the mobile terminal 100 recognizes the existence of the RFID tag 400 through the wireless communication unit 110, the mobile terminal 100 receives the RFID tag 400 from the RFID tag 400 through the wireless communication unit 100. ) Location information can be received. Accordingly, the mobile terminal 100 recognizes the existence of the RFID tag 400 and receives the location information of the RFID tag, and the controller 180 recognizes the location information of the corresponding RFID tag as the location information of the mobile terminal 100. can do.

For example, when the location information stored by the RFID tag 400 is "Jamsil-dong 1-1" in Seoul and the mobile terminal 100 is located at a predetermined distance or less (for example, 1 m) from the RFID tag 400, The mobile terminal 100 may receive the location information of the RFID tag 400 through the wireless communication unit 110 and identify the location of the mobile terminal 100 as "Jamsil-dong 1-1 in Seoul" through the corresponding location information.

On the other hand, when the mobile terminal 100 recognizes the RFID tag 400 which exists at a very long distance, since the position of the RFID tag 400 cannot be viewed as the position of the mobile terminal 100, the wireless communication unit 100 ) May be set to recognize only the RFID tag 400 located within a certain distance.

FIG. 6 (a) illustrates an indoor operation and illustrates an operation of identifying a location of the mobile terminal 100 through RFID tags 400a and 400b installed in various objects therein.

As can be seen in the figure, the first RFID tag 400a may be installed on a sofa, and the second RFID tag 400b may be installed on audio. Here, the first RFID tag 400a has position information corresponding to the position of the sofa, and the second RFID tag 400b has position information corresponding to the position of the audio. In this case, when the user is located within a certain distance of the sofa holding the mobile terminal 100, the wireless communication unit 110 recognizes the existence of the first RFID tag 400a, the position information from the first RFID tag 400a (Couch position), and the controller 180 can determine the position of the mobile terminal 100 as the vicinity of the sofa. Similarly, when the user's mobile terminal 100 is located in audio, the position information (audio position) is received from the second RFID tag 400b so that the controller 180 moves the position of the mobile terminal 100 to the vicinity of the audio. You can judge.

In FIG. 6 (b), an operation of identifying the position of the mobile terminals 100a to 100c through the RFID tags 400a to 400l installed in a specific building is shown.

As described above, the RFID tag can be manufactured in a small size while including various information. Therefore, the RFID tag can be installed at various locations. As shown in FIG. 6 (b), a plurality of RFID tags 400a to 400l may be installed at specific multiple locations of one building. At the time of installation, each RFID tag 400a to 400l can store accurate location information about where it was installed in a building.

Accordingly, when the mobile terminal 100 of the user is located near a specific RFID tag to confirm the existence of the RFID tag and receives location information from the RFID tag, the mobile terminal 100 is located within the building. Can determine exactly where) is located. Referring to FIG. 6B, the first mobile terminal 100b may recognize the existence of the RFID tag 400b and identify the location of the tag. Similarly, the second mobile terminal 100b and the third mobile terminal 100c may recognize the existence of each of the RFID tags 400g and 400i and identify the position of the corresponding tag.

FIG. 7 illustrates another example of determining a location of a mobile terminal using an RFID tag according to the present invention.

Another method of determining the location of the mobile terminal in the present invention may be a method of determining the location of the mobile terminal by determining the relative location from a specific point where the location is known.

In general, when the relative position is identified from the reference point where the position is known, a desired place can be identified. For example, if you tell a place, and describe it as "the location of 50 meters north of exit xx subway station # 7," you can accurately identify the place. Here, "xx subway station exit 7" is location information of the reference point, and "50m to the north" corresponds to a relative position with the reference point.

In the present invention, the reference point for identifying the position is the RFID tag 400, the position of the reference point is the position information of the RFID tag 400. The RFID tag 400 has location information corresponding to a place or an article where the RFID tag 400 is installed in relation to the present invention in which the tag is installed. The location information of the RFID tag 400 is received by the mobile terminal 100, so that the mobile terminal 100 secures location information on a reference point capable of identifying its location.

Since the mobile terminal 100 can check the position of the reference point through the position information of the RFID tag, in order to check the position of the mobile terminal 100, it is necessary to confirm the relative position with respect to the reference point.

As a method of identifying the relative position, there may be a method of checking from one RFID tag and a method of checking from a plurality of RFID tags.

In FIG. 7A, a scheme of checking the relative position of the mobile terminal 100 from one RFID tag 400 is schematically illustrated.

There may be various ways of confirming the relative position of the mobile terminal 100 from one RFID tag 400. For example, when the mobile terminal 100 transmits a request signal to the RFID tag 400 and the RFID tag 400 transmits an RFID signal in response to the request signal, the transmission time of the request signal, the RFID When considering various variables such as the reception time of the signal and the speed of the signal, the distance between the corresponding RFID tag 400 and the mobile terminal 100 may be determined.

In addition, the RFID signal transmitted by the RFID tag 400 may include information on the frequency or amplitude of the signal. In this case, the mobile terminal 100 can receive the RFID signal and directly measure the amplitude or frequency of the received RFID signal. By comparing the amplitude or frequency directly measured with the amplitude or frequency included in the received RFID signal, the distance and the direction may be checked as the relative positions of the mobile terminal 100 and the RFID tag 400.

In general, when a specific signal such as an RFID signal is received from a signal source, there are a number of methods for identifying relative positions such as distance and direction to the source of the signal. The present invention can be applied to various methods of finding the relative position of the RFID tag 400 and the mobile terminal 100, but is not limited to a specific method.

Referring to FIG. 7A, position information of an RFID tag may be confirmed as a reference point of the RFID tag 400. In addition, since the mobile terminal 100 can identify the relative position of the RFID tag 400 and the mobile terminal 100 using the received RFID signal, the mobile terminal 100 is located at a distance from the reference point to the relative position. It can be confirmed that.

On the other hand, the relative position of the mobile terminal 100 may be confirmed from a plurality of RFID tags. To determine the relative position from one RFID tag, the distance and direction from the RFID tag must be checked, but to determine the relative position from multiple RFID tags, the distance or direction from each RFID tag may be checked with one parameter. . For example, when the distance of the mobile terminal 100 is confirmed from each of the RFID tags, by using a triangulation method, the relative position of the mobile terminal 100 may be checked.

Referring to FIG. 7B, a method of confirming a relative position of the mobile terminal 100 from the plurality of RFID tags 400a, 400b, and 400c is illustrated. As described above, the distance from the source can be confirmed using the signal transmitted from the signal source such as one RFID tag. Since each RFID tag transmits each RFID signal, the mobile terminal 100 can check the distances R1, R2, R3 to each RFID tag.

When the distance to each RFID tag is confirmed, the controller 180 determines a portion intersecting each distance by using a triangulation method, and determines the corresponding intersection portion as a relative position of the mobile terminal 100. can do. Since the position information as the reference point of each of the RFID tags 400a, 400b, and 400c is known, the controller 180 can check the current position of the mobile terminal 100 using the determined relative position.

Meanwhile, when a plurality of RFID tags exist and the wireless communication unit 110 receives a plurality of RFID signals from the plurality of RFID tags, the controller 180 may selectively determine the relative positions. For example, it may be selectively determined by using only the RFID signal having the strongest signal, using an RFID signal having authorized location information, or receiving a signal from an RFID tag located closest.

In addition, another method of selectively receiving an RFID signal among a plurality of RFID tags may allow the mobile terminal 100 to periodically receive the RFID signal. Alternatively, the mobile terminal 100 may receive the RFID signals from the RFID tags only when the position is changed.

The present invention can identify the current position of the mobile terminal 100 in the above manner. In addition, the present invention can immediately check the confirmed position on the display unit 151 of the mobile terminal 100. The display unit 151 may display a map image corresponding to the current location of the mobile terminal 100 and display the current location of the mobile terminal 100 on the map image.

The memory 160 of the mobile terminal 100 may store the map image in advance. The map image refers to an image representing a specific area. The map image may include a road image representing a road and an interior image of a building representing a structure of a building such as a building. In addition, the map image may adjust a range of an area according to a user's selection. For example, the current location of the mobile terminal 100 may be checked in a range of the entire city, or the current location of the mobile terminal 100 may be checked in a specific village range. In addition, in the case of a building, the current location of the mobile terminal 100 may be determined in the whole building or may be determined on a specific floor.

The wireless communication unit 110 may periodically receive such a map image from an external server. On the other hand, the RFID tag 400 may optionally include a map image. Accordingly, the wireless communication unit 110 may receive not only the location information of the RFID tag 400 from the RFID tag 400 but also a map image for the area including the corresponding location.

8 is a diagram illustrating a method of displaying a determined position in relation to the present invention.

In FIG. 8A, the display unit 151 displays a map image 810 for a specific floor of a building. The current location of the mobile terminal 100 determined by the controller 180 is displayed on the map image 810. Map image 810 is a building interior image for the 15th floor. The current location of the mobile terminal 100 identified using the location information of the RFID tag 400 is determined as the first room 812, and the display unit 151 determines the location of the mobile terminal 100 in the first room ( 812 may be displayed.

In FIG. 8B, the display unit 151 displays a map image 820 for the entire building. Although the controller 180 may display a detailed image of the entire building, the controller 180 may simply display the location of the mobile terminal 100 as shown in the drawing. The current location of the mobile terminal 100 identified through the RFID tag 400 is determined to be located on the fourth floor of the entire building. Accordingly, the display unit 151 may display the location of the mobile terminal 100 as located on the fourth floor.

In FIG. 8C, the display unit 151 displays a map image 830 of a road. Map image 830 is an image of a road for a particular city. The mobile terminal 100 can check the location of the mobile terminal 100 identified through the RFID tag 400 on the road. The display unit 151 may directly display the location of the current mobile terminal 100 on the road image.

On the other hand, the location of the mobile terminal 100 confirmed through the RFID tag 400 may be confirmed on the external web (web). When the controller 180 determines the location of the mobile terminal 100, the controller 180 may provide the location to an external server such as a web, and the web may display the current location of the mobile terminal 100 together with a map image. have.

The present invention may be utilized in various ways using the identified location of the mobile terminal 100. Various services based on location may be provided through the mobile terminal 100. For example, the mobile terminal 100 provides various services such as a navigation service to a specific point, a congestion avoidance service such as a road jam, a service for providing information about the location of other users, and a service for providing information about the vicinity of the current location. You may.

9 is a diagram illustrating an operation of a navigation service as an example of using location information determined in relation to the present invention.

In FIG. 9A, the display unit 151 of the mobile terminal 100 displays the current position of the mobile terminal 100 on the road image. In addition, when the mobile terminal 100 receives a search command for a specific target point from the user, the controller 180 may determine various results regarding the path to the corresponding target point, the time required, and the like. Based on the determined result, the display unit 151 displays the route and the time required information 902 to the specific target point.

In FIG. 9B, the display unit 151 of the mobile terminal 100 may display a current position of the mobile terminal 100 on a road image. Here, the road image may include various information such as traffic conditions as well as road arrangement. Referring to FIG. 9B, the road image displayed by the display unit 151 may indicate whether the road is congested. Therefore, based on the current location of the mobile terminal 100 may determine whether the surrounding road is crowded or normal.

On the other hand, in connection with the present invention, the mobile terminal 100 may provide information on the identified current location to the external server. The external server may receive information on the location of each terminal from not only one mobile terminal 100 but also a plurality of mobile terminals, so that the external server may provide various services based on the received information of the terminals. For example, when the location information from the terminals related to the vehicle are aggregated, since information about which location is a large number or a small number of vehicles can be obtained, as shown in FIG. You can also provide accurate information about.

FIG. 10 is a diagram illustrating an operation of confirming a location of a plurality of terminals as another example of utilizing location information determined in relation to the present invention.

The mobile terminal 100 of the present invention may check the location of other terminals as well as its own location. The wireless communication unit 110 may receive location information of other terminals from an external server. The controller 180 may control to display each location on the display unit 151 using the received location information of other terminals.

Referring to FIG. 10A, the display unit 151 displays a map image for a specific floor. In addition, the position of the mobile terminal 100 as well as the position of the other terminals 1001 to 1004 may be displayed on the map image.

Referring to FIG. 10B, the display unit 151 displays a map image for a specific building. Here, the location of the mobile terminal 100 is determined to be on the first floor of a specific building. Along with this, the positions of the other terminals 1010a to 1010f are indicated as being distributed on the second or third floor.

Meanwhile, the wireless communication unit 151 may receive location information of other terminals from the RFID tag 400 as well as an external server. The RFID tag 400 may be configured not only to transmit an RFID signal but also to receive and store information from an RFID reader. When the RFID tag 400 stores the locations of other terminals, the RFID tag 400 may provide not only location information of the RFID tag 400 itself but also location information of other terminals through the RFID signal. That is, the mobile terminal 100 may not only determine its position through the RFID signal but also may be configured to check the positions of other terminals.

The display unit 151 may also display location information of the RFID tag included in the RFID signal received through the wireless communication unit 110. Since the location information of the RFID tag may include various information about an article or a place where the RFID tag 400 is installed, the information may be displayed on a map image.

If the information on the map image (eg, a road name or a building name) is wrong, the controller 180 may correct the corresponding information by using the location information of the received RFID tag.

11 illustrates an operation of displaying an RFID tag in accordance with the present invention.

Referring to FIG. 11A, the display unit 151 displays a map image for a specific area. The controller 180 may display the location of the mobile terminal 100 identified using the location information of the RFID tag 400 on the map image. In addition, the controller 180 may display the information on the RFID tag 400 on the display unit 151 using the received position information of the RFID tag. The mobile terminal 100 can display and provide location information 1112, 1114, and 1116 for RFID tags together with the location of the mobile terminal.

Referring to FIG. 11B, the display unit 151 provides a three-dimensional shape of a building in which an RFID tag is installed. The RFID tag 400 may include detailed information about the buildings where the corresponding tag is installed. Here, the detailed information includes various information such as the three-dimensional shape of the building and the name of the building. When the controller 180 confirms the building shape based on the information received from the RFID tag 400, the controller 180 may display the building shape through the display unit 151 as illustrated.

As the mobile terminal 100 moves to a new place, the wireless communication unit 110 may receive an RFID signal from the new RFID tag, and thereby confirm the new place where the mobile terminal 100 moves. Here, the controller 180 can store the location information received from the plurality of RFID tags in the memory 160.

When the mobile terminal 100 moves to a completely new place, it is necessary to receive the location information of the RFID tag through the RFID signal from the new RFID tag. However, when the place where the mobile terminal 100 is moved is an area of the location information of the RFID tag stored in the memory 160, the wireless communication unit 110 does not need to receive the location information of the new RFID tag. In this case, the controller 180 may determine only the relative position with the RFID tag from the RFID signal, and determine the position of the mobile terminal 100 therefrom.

12 is a diagram illustrating an operation of managing location information of an RFID tag obtained in accordance with the present invention.

As the mobile terminal 100 moves to a new location, the mobile terminal 100 displays information on the RFID tags and stores the information on the tag in the memory 160.

In FIG. 12A, the display unit 151 displays a specific map image. Here, a plurality of RFID tags 1201 to 1203 may be displayed at each corresponding location. In addition, the position of the mobile terminal 100 identified by identifying the relative position from the corresponding tags 1201 to 1203 is also displayed. Here, location information for the tags 1201-1203 can be stored in the memory 160.

In FIG. 12B, the mobile terminal 100 is moved. As the mobile terminal 100 moves to a new place, the RFID tags that are the targets used to confirm the position of the mobile terminal 100 may also change. In FIG. 12A, if the tags used to identify the position of the mobile terminal 100 are RFID tags 1201 to 1203, the tags used to confirm the position as the mobile terminal 100 moves are RFID tags 1208-1210. In other words, the tags used for positioning are also changed as the mobile terminal 100 moves. Herein, the information of the RFID tags 1201 to 1207 previously used is not deleted and is stored in the memory 160 and may be displayed on the display unit 151 as necessary.

FIG. 12C is a diagram illustrating a case in which the mobile terminal 100 moves again. Here, the mobile terminal 100 is a case where the mobile terminal 100 moves to a place where the existing location is not a new place at all. Since the memory 160 can store the location information for the received RFID tags 1201-1209, the wireless communication unit 110 does not newly receive the location information for the RFID tags. Accordingly, the mobile terminal 100 may omit repeating the process of receiving the location information of the same RFID tag with respect to the RFID tag of the same place.

FIG. 13 is a diagram illustrating an operation of recording information using a footprint in accordance with the present invention.

The footprint is present in such a way as to use the location of the identified mobile terminal 100. That is, the footprint may be printed by leaving information such as a specific memo at a specific position. When the mobile terminal 100 selects to footprint the current location, information about the current location may be left. In this case, even if it moves to another position, there is an effect that it is easy to find the footprint point.

In FIG. 13A, the display unit 151 displays the position of the mobile terminal 100 on a map image. Along with this, a menu 1310 on whether or not a foot print is displayed for the current position may be displayed. If you are footprinting in relation to your current location, you can write to a server or write to an RFID tag.

When recording to the server through the foot print command, the footprint can be printed by recording information on the corresponding location on the server. In addition, when recording to the RFID tag through the foot print command, the controller 180 can record the information on the position of the mobile terminal 100 in the RFID tag closest to the corresponding position via the wireless communication unit 110.

Fig. 13B is a diagram showing a case where a footprint is printed. Footprinted information can be stored in an external server or RFID tag. The display unit 151 displays the footprint printed position value on the map image.

Meanwhile, the current position of the mobile terminal 100 determined through the RFID tag may be managed by an icon. For example, the controller 180 can generate an icon when starting to check the current position of the mobile terminal 100 through the RFID tag. The generated icon is an icon associated with the current location of the mobile terminal 100 and may be set to be linked to the current location information and the information of the RFID tags.

In addition, according to an embodiment of the present invention, the above-described position determination method may be implemented as code that can be read by a processor in a medium in which a program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

100 mobile terminal 110 wireless communication unit
151 Display 160 Memory
180 controller 400 RFID tag

Claims (15)

A display unit;
A wireless communication unit for receiving an RFID signal including location information of the RFID tag from each of at least one RFID (Radio Frequency Identification) tag; And
Determining a relative position of the mobile terminal with respect to each of the at least one RFID tag by using the respective RFID signals,
Determine the current position of the mobile terminal by using the position information of the RFID tag included in the RFID signal and the relative position of the mobile terminal with respect to the RFID tag,
It includes a control unit for controlling to display the determined current position of the mobile terminal to the display unit,
The RFID tag prestores the location information of the RFID tag,
Mobile terminal. The method of claim 1,
The location information of the RFID tag is stored in the form of a unique feature identifier (UFID),
Mobile terminal. The method of claim 1,
The control unit,
Analyze the RFID signal received from a particular RFID tag,
Determining a relative position between the specific RFID tag and the mobile terminal by determining a distance and a direction between the specific RFID tag and the mobile terminal according to the analysis result;
Mobile terminal. The method of claim 1,
The control unit,
Analyze the RFID signal received from each of the plurality of RFID tags,
Determining a distance between each of the plurality of RFID tags and the mobile terminal according to the analysis result;
Determining the relative positions of the plurality of RFID tags and the mobile terminal by combining the distances of the plurality of RFID tags and the respective mobile terminals;
Mobile terminal. The method of claim 4, wherein
The control unit,
Determining a relative position of each of the plurality of RFID tags and the mobile terminal by using a triangulation method for each distance of the plurality of RFID tags and the mobile terminal;
Mobile terminal. The method of claim 1,
The display unit includes:
Displaying a map image corresponding to an area including the current location of the mobile terminal,
Displaying the current location of the mobile terminal on the map image;
Mobile terminal. The method according to claim 6,
Further comprising a memory for pre-storing the map image,
Mobile terminal. The method according to claim 6,
The map image includes at least one of a road image and a building interior image.
Mobile terminal. The method of claim 1,
The control unit,
If you have been entered for a specific goal point,
Controlling to provide route information on the specific target point from a current position of the mobile terminal,
Mobile terminal. The method of claim 1,
The display unit includes:
By using the position information of the at least one RFID tag, to display the position of each of the at least one RFID tag,
Mobile terminal. The method of claim 1,
The wireless communication unit transmits information on the current location of the mobile terminal to an external server,
The external server aggregates the information on the current location from a plurality of mobile terminals to provide a specific service,
Mobile terminal. Receiving an RFID signal including location information of the RFID tag from each of at least one Radio Frequency Identification (RFID) tag;
Determining a relative position of the mobile terminal with respect to each of the at least one RFID tag using the respective RFID signals;
Determining a current position of the mobile terminal using location information of the RFID tag included in the RFID signal and a relative position of the mobile terminal with respect to the RFID tag; And
Displaying the determined current location of the mobile terminal;
Location determination method. 13. The method of claim 12,
Determining the relative position,
Analyzing the RFID signal received from a specific RFID tag; And
Determining a distance and a direction between the specific RFID tag and the mobile terminal according to the analysis result.
Position determination method using RFID tag. 13. The method of claim 12,
Determining the relative position,
Analyzing the RFID signals received from each of a plurality of RFID tags;
Determining a distance between each of the plurality of RFID tags and the mobile terminal according to the analysis result; And
Determining a relative position of each of the plurality of RFID tags and the mobile terminal by synthesizing the distances of each of the plurality of RFID tags and the mobile terminal.
Position determination method using RFID tag. 13. The method of claim 12,
The display step,
Displaying a map image corresponding to an area including the current location of the mobile terminal,
Displaying the current location of the mobile terminal on the map image;
Position determination method using RFID tag.

Images