KR101950225B1 - Method for preventing losing accessory and mobile device - Google Patents

Abstract

  The present invention relates to a method for preventing loss of an accessory separated from a portable terminal and a portable terminal to which the method is applied. A method for preventing accessory loss according to the present invention comprises the steps of: determining whether an accessory is detached from a portable terminal; Calculating a movement distance of the portable terminal using the sensing signal received from the movement sensor provided in the portable terminal when the accessory is separated from the portable terminal; And guiding the user to the risk of losing the detached accessory if the calculated travel distance exceeds a predetermined threshold.

Description

[0001] METHOD FOR PREVENTING LOSING ACCESSORY AND MOBILE DEVICE [0002]

 The present invention relates to a method for preventing loss of an accessory separated from a portable terminal and a portable terminal to which the method is applied.

In general, the control unit of the portable terminal detects a signal indicating that the accessory (e.g., a pen for touching the touch screen) is disconnected from the portable terminal. The control unit also measures the strength of the signal received from the accessory through the wireless communication unit and calculates the distance to the accessory. The controller informs the user that the accessory has been disconnected by pop-up, sound, and vibration when the calculated distance exceeds a predetermined threshold, thereby preventing the accessory from being lost.

However, the above-mentioned conventional loss prevention method is a technology that requires a wireless communication technology between a controller and an accessory. Therefore, the conventional loss prevention method has been pointed out that accessory is complicated by adding parts related to wireless communication technology to accessories, which can not be applied to portable terminals if the size of the accessories is small.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of informing a user of the risk of loss without losing an accessory without wireless communication with the accessory, and a portable terminal to which the method is applied.

A method for preventing accessory loss according to the present invention comprises the steps of: determining whether an accessory is detached from a portable terminal; Calculating a movement distance of the portable terminal using the sensing signal received from the movement sensor provided in the portable terminal when the accessory is separated from the portable terminal; And guiding the user to the risk of losing the detached accessory if the calculated travel distance exceeds a predetermined threshold.

A portable terminal according to the present invention includes: a sensor unit for detecting a physical quantity related to separation of an accessory and movement of a portable terminal; When receiving the separation guidance signal from the sensor unit, calculates a movement distance of the portable terminal using a sensing signal related to the physical quantity received from the sensor unit, and when the calculated movement distance exceeds a predetermined threshold value, A controller for guiding the user to the risk of loss of the accessory; And a display panel for displaying data for guiding the loss risk under the control of the control unit.

As described above, according to the method of preventing loss of accessory and the portable terminal according to the present invention, the present invention provides an advantage that the portable terminal can inform the user of the risk of loss without losing accessory without wireless communication with the accessory.

FIG. 1 is a view showing the appearance of a mobile terminal according to an embodiment of the present invention.
2 is an electrical block diagram of a portable terminal according to an embodiment of the present invention.
3 is a flowchart illustrating a method of preventing an accessory loss according to an embodiment of the present invention.
4 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention.
5 is a view for explaining a method of preventing accessory loss according to another embodiment of the present invention.
6 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention.
7 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention.

In the present invention, a portable terminal means a portable electronic device having a touch screen, such as a mobile phone, a smart phone, a tablet PC, and a notebook PC. In the present invention, an accessory is an accessory of a portable terminal detachable from a portable terminal, and may be, for example, a pen for touching on a touch screen, a headphone, a keypad, and the like.

Hereinafter, an application execution method and a portable terminal according to the present invention will be described in detail. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Also, the terms and words used herein should not be construed as being limited to ordinary or dictionary meanings, and should be construed in a meaning and a concept consistent with the technical idea of the present invention. Therefore, the following description and the accompanying drawings are merely exemplary of the present invention and are not intended to be exhaustive of the technical idea of the present invention, so that various equivalents and modifications may be made thereto at the time of the present application . Moreover, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically illustrated.

FIG. 1 is an external view of a portable terminal according to an embodiment of the present invention, and FIG. 2 is an electrical block diagram of a portable terminal according to an embodiment of the present invention.

1 and 2, a portable terminal 100 according to an exemplary embodiment of the present invention includes a touch screen 110, a key input unit 120, a storage unit 130, a wireless communication unit 140, an audio processing unit 150, a speaker SPK, a microphone MIC, a sensor unit 160, a control unit 170, and a stylus pen 180.

The touch screen 110 includes a touch panel 111 and a display panel 112. The touch panel 111 may be placed on the display panel 112. Specifically, the touch panel 111 may include an add-on type located on the display panel 112, an on-cell type or an in-cell type inserted into the display panel 112, cell type).

The touch panel 111 generates an analog signal (e.g., a touch event) in response to a user's gesture with respect to the touch panel 111, A / D converts the analog signal, and transmits the analog signal to the controller 170. The controller 170 detects the user's gesture from the transmitted touch event. The control unit 170 controls the configurations in response to the detected user gesture. The user gesture is divided into a touch gesture and a touch gesture. The touch gesture may again include a tap, a drag, a flick, and the like. That is, the touch refers to a state of being in contact with the touch screen, and the touch gesture refers to a change of the touch from touch-on to touch-off.

The touch panel 111 may be a composite touch panel including a hand touch panel 111a for sensing a hand gesture and a pen touch panel 111b for sensing a pen gesture. Here, the hand touch panel 111a may be configured as a capacitive type. Of course, the hand touch panel 111a may be formed of a resistive type, an infrared type, or an ultrasonic type. Also, the hand touch panel 111a does not generate a touch event only by the hand gesture of the user, but can generate the touch event also by another object (for example, a conductive material capable of applying a capacitance change). The pen touch panel 111b may be of an electromagnetic induction type. Accordingly, the pen touch panel 111b generates a touch event by a touch stylus pen 180 specially designed to form a magnetic field.

Under the control of the controller 170, the display panel 112 converts the image data received from the controller 170 into analog signals and displays them. That is, the display panel 112 displays various screens such as a lock screen, a home screen, a configuration screen, an application (for short, 'App') execution screen according to the use of the portable terminal 100, can do. The lock screen is an image displayed on the display panel 112 when the display panel 112 is turned on. When a user gesture for unlocking is detected, the controller 170 may change the displayed image from the lock screen to a home screen or an application execution screen. The home screen may be defined as an image including a plurality of icons respectively corresponding to a plurality of applications (e.g., environment setting, browser, call, message, etc.). When one of the plurality of application icons is selected by a user (e.g., an icon is tapped), the control unit 170 can execute the corresponding application and display the basic screen on the display panel 112. [ In addition, when a touch movement associated with one of the plurality of application icons is detected, the control unit 170 executes a function corresponding to the movement of the touch in the corresponding application, displays a screen corresponding to the executed function on the display panel 112 can do.

Under the control of the controller 170, the display panel 112 displays one of the screens, for example, an application execution screen as a background and overlaps and displays another screen such as a keypad as a foreground on the background . Further, under the control of the control unit 170, the display panel 112 can display a plurality of screens without overlapping each other. For example, the display panel 112 may display one of the screens in the first screen area and the other in the second screen area. The display panel 112 may include a liquid crystal display (LCD), an organic light-emitting diode (OLED), or an active matrix organic light-emitting diode (AMOLED).

The key input unit 120 may include a plurality of keys (buttons) for receiving numeric or character information and setting various functions. These keys may include a menu retrieval key, a screen on / off key, a power on / off key, and a volume control key. The key input unit 120 generates a key event related to the user setting and the function control of the portable terminal 100, and transmits the generated key event to the controller 170. The key event may include a power on / off event, a volume adjustment event, a screen on / off event, and the like. The control unit 170 controls the above-described configurations in response to these key events. The key of the key input unit 120 may be a hard key and the key of the touch screen 110 may be a soft key.

The storage unit 130 may be a secondary memory unit of the controller 170 and may include a disk, a RAM, a ROM, and a flash memory. The storage unit 130 is connected to an external device such as a server, a desktop PC, a tablet PC, or the like via the wireless communication unit 140 or an external device interface unit (not shown) under the control of the controller 170. [ Or the like) can be stored.

The storage unit 130 stores a boot program and an operating system (OS) for operating the portable terminal 100. Also, the storage unit 130 stores the loss prevention program according to the present invention. The loss prevention program has a function of determining whether or not the accessory (for example, the pen 180) is detached and the portable terminal 100 is moved using the detection signal received from the sensor unit 160, A function of calculating a travel distance of the portable terminal 100 using the sensing signal received from the sensor unit 160 when the portable terminal 100 moves, and a function of, when the calculated travel distance exceeds a predetermined threshold, And a function of informing the user of the risk.

 The storage unit 130 includes an embedded application and a third party application. The internalization application refers to an application that is basically installed in the portable terminal 100. [ For example, the internalization application may be a browser, an email, an instant messenger, or the like. As is well known, the third party application refers to an application that can be downloaded and installed from the online marketplace to the mobile terminal 100, and is very diverse. These third-party applications are free to install and uninstall. When the portable terminal 100 is turned on, the boot program is loaded into the main memory (e.g., RAM) of the controller 170 first. The boot program loads the operating system into the main memory so that the portable terminal 100 can operate. The operating system also loads and executes applications as main memory. Such booting and loading is well known in the computer system, and thus a detailed description thereof will be omitted.

The wireless communication unit 140 performs voice communication, video communication, or data communication under the control of the controller 170. [ For this purpose, the wireless communication unit 140 may include a radio frequency transmitter for up-converting and amplifying the frequency of a transmitted signal, and a radio frequency receiver for performing low-noise amplification and down-conversion on the frequency of the received signal. The wireless communication unit 140 may be a mobile communication module (for example, a 3-generation mobile communication module, a 3.5-generation generation mobile communication module, a 4-generation generation mobile communication module, (E.g., a DMB module) and a short range communication module (e.g., a Wi-Fi module, a bluetooth module).

The audio processing unit 150 is coupled with a speaker SPK and a microphone MIC to perform input and output functions of audio signals for voice recognition, voice recording, digital recording, and call functions. The audio processing unit 150 receives an audio signal (for example, a voice signal for guiding the risk of loss) from the control unit 170, D / A-converts the received audio signal to analog, amplifies the analog signal, do. The audio processor 150 A / D-converts the audio signal received from the microphone (MIC) into a digital signal, and provides the audio signal to the controller 170. The speaker SPK converts an audio signal received from the audio processing unit 150 into a sound wave and outputs the sound wave. A microphone (MIC) converts sound waves from people or other sound sources into audio signals.

The sensor unit 160 senses a physical quantity or its change. In particular, according to the present invention, the sensor unit 160 senses a physical quantity (e.g., speed, acceleration, altitude) related to the movement of the portable terminal 100 and transmits a sensing signal corresponding to the sensed physical quantity to the controller 170 When the detection sensor 161 and the accessory (e.g., the pen 180) are separated from the portable terminal 100, the separation guidance signal is transmitted to the controller 170. When the accessory is coupled to the portable terminal 100, And an accessory detachment detection sensor 162 for transmitting a signal to the control unit 170. [ The movement detection sensor 161 may include, for example, an acceleration sensor, a geomagnetic sensor, a gyro sensor, an altimeter, or the like to detect a physical quantity related to the movement of the portable terminal 100. For example, if the accessory is magnetized, the accessory detachment detection sensor 162 includes a hall sensor. That is, when the first contact of the magnet and the second contact of the Hall sensor are disconnected, the accessory detachment detection sensor 162 outputs the separation guiding signal to the control unit 170. When the first contact and the second contact are attached, the accessory detachment detection sensor 162 transmits a coupling guide signal to the controller 170.

The control unit 170 controls the overall operation of the portable terminal 100 and the signal flow between the internal configurations of the portable terminal 100 and performs a function of processing data. The controller 170 also controls power supply from the battery to the configurations. For example, if power is not supplied from the battery to the touch screen 110, the image data is not displayed through the touch screen 110. When the user presses a screen on / off button of the key input unit 120, the key input unit 120 transmits a screen on event to the control unit 170. In response to the screen-on event, the controller 170 controls the battery so that power is supplied to the touch screen 110. When power is supplied from the battery to the touch screen 110, the image data is displayed through the touch screen 110. When the user presses the screen on / off button of the key input unit 120 while the image data is being displayed, the key input unit 120 transmits a screen off event to the control unit 170. In response to the screen off event, the controller 170 cuts off the power supply to the touch screen 110. The control unit 170 also cuts off the power supply to the touch screen 110 when an event is not received from the touch screen 110 and the key input unit 120 for a predetermined time (e.g., one minute).

The control unit 170 includes a main memory for storing an application program and an operating system and a cache memory for temporarily storing data to be written to the storage unit 130 and temporarily storing data read from the storage unit 130. [ A central processing unit (CPU), a graphics processing unit (GPU), and the like. Here, the operating system acts as an interface between the hardware and the program, and manages computer resources such as CPU, GPU, main memory, and auxiliary memory. That is, the operating system operates the portable terminal 100, determines the order of tasks, and controls operations of the CPU and GPU. The operating system also controls the execution of application programs and manages the storage of data and files. As is well known, the CPU is a core control unit of a computer system that performs calculations and comparisons of data, and interprets and executes instructions. The GPU is a graphics control unit that performs computation and comparison of data related to graphics, interpreting and executing instructions, and so on, on behalf of the CPU. The CPU and the GPU may each be integrated into a single package of two or more independent cores (e.g., quad-core) in a single integrated circuit. The CPU and the GPU may be integrated on a single chip (SoC). The CPU and GPU may also be packaged in a multi-layer. On the other hand, a configuration including a CPU and a GPU may be referred to as an application processor (AP).

A characteristic function of the control unit 170 relating to the present invention, that is, a loss prevention function of the accessory will be described below with reference to the drawings.

Meanwhile, the portable terminal 100 according to the present invention may be a GPS module, a Near Field Communication (NFC) module, a vibration motor, a camera, an external A device interface unit, and the like. Here, the vibration motor can be used to inform the user of the risk of loss. The GPS module can be used for calculating the moving distance of the mobile terminal 100. [ Also, the portable terminal 100 of the present invention may be excluded from the specific configuration or replaced with another configuration in the configurations described above, depending on the providing mode.

3 is a flowchart illustrating a method of preventing an accessory loss according to an embodiment of the present invention.

Referring to FIG. 3, in step 310, the controller 170 determines whether the accessory is detached. For example, when the controller 170 receives the detachment guide signal from the sensor unit 160, the controller 170 determines that the accessory is disconnected from the portable terminal 100. Herein, the separation guide signal includes information indicating what the corresponding accessory is. Accordingly, when there are a plurality of accessories, the control unit 170 can recognize which of the accessories is detached from the portable terminal 100. [

If the accessory is detached from the portable terminal 100, the controller 170 determines whether the portable terminal 100 is moved or not in step 320. For example, when the controller 170 receives a status change event related to a change in acceleration or altitude from the sensor unit 160, the controller 170 determines that the mobile terminal 100 is moving.

If the portable terminal 100 moves, the control unit 170 calculates the moving distance of the portable terminal 100 in step 330. FIG. For example, the control unit 170 may request a physical quantity related to the movement from the sensor unit 160 and, in response thereto, use the sensing signal transmitted by the sensor unit 160 to determine the distance In units of centimeters or steps or the like.

In step 340, the controller 170 determines whether the accessory is coupled. For example, when the controller 170 receives the coupling guide signal from the sensor unit 160, the controller 170 determines that the accessory is coupled to the portable terminal 100. Herein, the combined guidance signal includes information indicating what the corresponding accessory is. Accordingly, the control unit 170 can recognize what the combined accessory is.

If the accessories are combined, the process to prevent loss of the accessories is terminated. If the accessory is not engaged, the control unit 170 at step 350 determines whether the calculated travel distance exceeds a predetermined threshold (e.g., 5 meters or 10 steps).

If the calculated travel distance does not exceed the preset threshold, the process returns to step 320. If the computed movement distance exceeds a predetermined threshold value, the controller 170 notifies the user of the risk of loss at step 360.

For example, under the control of the controller 170, the touch screen 110 displays a pop-up for informing the user of the risk of loss. Under the control of the controller 170, the audio processor 150 converts the audio signal for informing the user of the risk of loss to an analog signal and outputs the analog signal to the speaker SPK. The vibration motor vibrates under the control of the control unit 170. [

In step 370, the controller 170 determines whether the accessory is coupled. If the accessory is not coupled, the control unit 170 continuously informs the user of the risk of loss. When the accessories are combined, the control unit 170 ends the guidance of the loss risk. That is, the user connects the accessory to the portable terminal 100 to end the guidance of the loss risk. Alternatively, the user may terminate the guidance of the loss risk by operating the portable terminal 100 (e.g., tapping the end button displayed on the touch screen 110) without coupling the accessory to the portable terminal 100. [

As described above, according to an embodiment of the present invention, when the portable terminal 100 is moved while the accessory is detached, the controller 170 informs the user that the detached accessory may be lost.

4 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention. 5 is a view for explaining a method of preventing accessory loss according to another embodiment of the present invention.

Referring to FIG. 4, in step 410, the controller 170 determines whether the pen 180 is detached. If the pen 180 is disconnected from the portable terminal 100, the controller 170 determines whether the portable terminal 100 is moved or not in step 420. If the portable terminal 100 moves, the controller 170 calculates the moving distance of the portable terminal 100 in step 430. [

In step 440, the control unit 170 determines whether the pen 180 is touched to the touch screen 110. [ When the touch screen 110 transmits a touch event related to the touch event to the control unit 170 as the pen 180 is touched on the touch screen 110, the control unit 170 sets the movement distance calculated in step 430 as an initial (E.g., initialization) to a value (e.g., '0') and then returns to step 420.

If the pen 180 has not been touched to the touch screen 110, the controller 170 determines whether the pen 180 is coupled in step 460. If the accessory is not engaged, the control unit 170 at step 470 determines whether the calculated travel distance exceeds a predetermined threshold (e.g., 5 meters or 10 steps). If the calculated movement distance exceeds a predetermined threshold value, the control unit 170 notifies the user of the loss risk at step 480. [ For example, referring to FIG. 5, the controller 170 controls the touch screen 110 to display a pop-up 510 for informing a user of the risk of loss. If the calculated movement distance does not exceed the predetermined threshold value, the controller 170 returns to step 420. [ If the portable terminal 100 is moving, the controller 170 proceeds to step 430 to calculate the moving distance of the portable terminal 100. The calculated travel distance is a value summed with the previously calculated travel distance (which may be an initial value according to step 450).

As described above, according to another embodiment of the present invention, the controller 170 informs the user of the risk of loss if there is no interaction between the accessory and the portable terminal 100. If the portable terminal 100 moves while the accessories are separated, the accessory is not lost if there is interaction between the accessory and the portable terminal 100. That is, the user is carrying the accessory. When there is an interaction between the accessory and the portable terminal 100, the controller 170 recognizes that the user carries the pen 180 together with the portable terminal 100 and initializes the movement distance. The accessory may be a pen 180 or a keypad detachable from the portable terminal 100 as illustrated.

6 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention.

Referring to FIG. 6, in step 610, the controller 170 determines whether or not the pen 180 is detached. If the pen 180 is separated from the portable terminal 100, the controller 170 determines whether the screen is turned off (step 620). If the image data is being displayed through the touch screen 110 (i.e., the screen is turned on), the controller 170 determines whether the pen 180 is coupled in step 630. [ When the pen 180 is coupled to the portable terminal 100, the process for preventing loss of the pen 180 is terminated. If the pen 180 is not coupled to the mobile terminal 100, the process returns to step 620. [

If the screen is turned off, the controller 170 determines whether the portable terminal 100 is moved or not in step 640. If the portable terminal 100 moves, the controller 170 calculates the moving distance of the portable terminal 100 in step 650. In step 660, the controller 170 determines whether the pen 180 is coupled. When the pen 180 is coupled to the portable terminal 100, the process for preventing loss of the pen 180 is terminated. If the pen 180 is not coupled to the portable terminal 100, the controller 170 determines in step 670 whether the calculated travel distance exceeds a predetermined threshold (e.g., 5 meters or 10 steps). If the calculated travel distance does not exceed the predetermined threshold, the process returns to step 640. [ If the calculated movement distance exceeds a predetermined threshold, the controller 170 notifies the user of the risk of loss in step 680. [

According to another embodiment of the present invention, when the screen of the portable terminal 100 is turned off while the accessory is disconnected from the portable terminal 100, the controller 170 informs the user of the risk of loss. The accessory may be a pen 180 or a keypad detachable from the portable terminal 100 as illustrated.

7 is a flowchart illustrating a method of preventing accessory loss according to another embodiment of the present invention.

Referring to FIG. 7, in step 710, the controller 170 determines whether the pen 180 is detached. If the pen 180 is disconnected from the portable terminal 100, the controller 170 determines whether the screen is turned off (step 720). If the screen is turned on, the controller 170 determines whether the pen 180 is engaged or not in step 730. When the pen 180 is coupled to the portable terminal 100, the process for preventing loss of the pen 180 is terminated. If the pen 180 is not coupled to the mobile terminal 100, the process returns to step 720. [

If the screen is turned off, the controller 170 determines whether the portable terminal 100 is moved or not in step 740. If the portable terminal 100 moves, the controller 170 calculates the moving distance of the portable terminal 100 in step 750. In step 760, it is determined whether or not the screen is on. If the screen is on, the control unit 170 initializes the calculated travel distance in step 750 to '0' in step 770 and returns to step 720. If the screen is turned off, the controller 170 determines whether the pen 180 is engaged in step 780. When the pen 180 is coupled to the portable terminal 100, the process ends. If the pen 180 is not coupled to the portable terminal 100, the controller 170 determines whether the calculated movement distance exceeds a predetermined threshold (e.g., 5 meters or 10 steps) at step 790. [ If the calculated movement distance exceeds a preset threshold value, the controller 170 notifies the user of the risk of loss in step 795.

The method of preventing accessory loss according to the present invention as described above can be implemented by a program command which can be executed through various computers and recorded in a computer-readable recording medium. The recording medium may include a program command, a data file, a data structure, and the like. The program instructions may also be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. In addition, a recording medium includes a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, and a magnetic optical medium such as a floppy disk. A hard disk, a magneto-optical medium, a ROM, a RAM, a flash memory, and the like. The program instructions may also include machine language code such as those generated by the compiler, as well as high-level language code that may be executed by the computer using an interpreter or the like. A hardware device may be configured to operate as one or more software modules for carrying out the invention.

The method for preventing the loss of the accessory according to the present invention and the portable terminal are not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

100:
110: Touch screen
111: Touch panel
111a: Hand touch panel 111b: Pen touch panel
112: display panel
120: key input unit
130:
140:
150: Audio processor
160:
161: movement detection sensor 162: accessory removal detection sensor
170:

Claims (13)

A method for preventing loss of an accessory in a portable terminal having an accessory,
Determining whether the accessory is detached from the portable terminal;
The method comprising the steps of: determining whether the portable terminal is turned off when the accessory is disconnected from the portable terminal; and when the accessory is disconnected from the portable terminal, Calculating a moving distance of the portable terminal; And
And guiding the user to the risk of losing the detached accessory if the calculated travel distance exceeds a predetermined threshold. The method according to claim 1,
Wherein the step of guiding comprises:
Determining whether there is interaction between the detached accessory and the portable terminal, and if there is no interaction between the detached accessory and the portable terminal and the calculated travel distance exceeds a predetermined threshold, And guiding the user to the risk of loss of the accessory. 3. The method of claim 2,
Determining whether there is said interaction,
And determining whether or not the pen separated from the portable terminal is touched to the touch screen of the portable terminal. delete The method according to claim 1,
Wherein the calculating step comprises:
And when the screen of the mobile terminal is turned on, the calculated movement distance is initialized to a preset initial value. A method for preventing loss of an accessory in a portable terminal having an accessory,
Determining whether the accessory is detached from the portable terminal;
Calculating a travel distance of the portable terminal when the accessory is detached from the portable terminal, and determining whether there is an interaction between the accessory and the portable terminal; And
And guiding the user to the risk of losing the accessory if there is no interaction between the accessory and the portable terminal and the calculated travel distance exceeds a predetermined threshold. The method according to claim 6,
Wherein the step of determining whether there is an interaction comprises:
And determining whether or not the pen separated from the portable terminal is touched to the touch screen of the portable terminal. 1. A portable terminal having a detachable accessory,
A sensor unit for detecting a physical quantity related to whether or not the accessory is detached and a movement of the portable terminal;
And a controller for determining whether the display panel is turned off by receiving a separation guiding signal from the sensor unit, and when a screen of the display panel is off, A control unit for calculating a travel distance and guiding the user to the risk of losing the separated accessory if the calculated travel distance exceeds a preset threshold value; And
And a display panel for displaying data for guiding the loss risk under the control of the control unit. 9. The method of claim 8,
Wherein,
Determining whether there is interaction between the detached accessory and the portable terminal, and if there is no interaction between the detached accessory and the portable terminal and the calculated travel distance exceeds a predetermined threshold, And notifies the user of the risk of loss of the accessory. 10. The method of claim 9,
Wherein,
Wherein the portable terminal determines whether or not the pen separated from the portable terminal is touched to the touch screen including the display panel. delete 9. The method of claim 8,
Wherein,
And initializes the calculated movement distance to a preset initial value when the screen of the portable terminal is turned on. A portable terminal having a touch screen and a detachable touch pen,
A sensor unit for detecting whether or not the pen is detached; And
Upon receiving a separation guiding signal from the sensor unit, calculates a movement distance of the portable terminal and determines whether there is an interaction between the pen and the touch screen, and if there is no interaction between the pen and the touch screen, And controlling the touch screen to guide the user of the risk of losing the pen if the moved distance exceeds a preset threshold value.

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