TW201606566A - A terminal and a method of controlling the same - Google Patents

Abstract

A first terminal configured to operate in conjunction with a second terminal, the first terminal including: a sensor configured to obtain information corresponding to a motion of the first terminal; a communicator configured to receive information corresponding to a motion of the second terminal from the second terminal; and a controller configured to, in response to a distance between the first terminal and the second terminal being greater than or equal to a critical value, control the communicator to transmit a notification message to the second terminal based on the information corresponding to the motion of the first terminal and the information corresponding to the motion of the second terminal.

Description

Terminal and control method thereof

Aspects of one or more exemplary embodiments are directed to a terminal and a method of controlling a terminal, and more particularly, to a method in which a terminal operates based on two or more states between two terminals.

Since the type and size of the terminal have changed, the number of users using multiple devices has increased. If multiple devices are used, various user experiences can be provided based on communication between multiple devices. For example, a device can transmit a message to another device.

Various sensors can be configured in the terminal. The terminal can use various sensors to detect the state of the terminal and the state of the environment surrounding the terminal.

Therefore, more useful functions and various user experiences need to be provided to users who use multiple terminals.

Various methods of controlling a terminal are provided herein to perform more appropriate operations based on the state of both terminals.

Additional aspects will be apparent from the description, or may be apparent from the description.

In accordance with an aspect of the exemplary embodiments, a first terminal configured to operate with a second terminal is provided, the first terminal comprising: a sensor configured to obtain a corresponding Information of motion of the first terminal; a communicator configured to receive information corresponding to motion of the second terminal from the second terminal; and a controller configured to respond to the first The distance between the terminal and the second terminal is greater than or equal to a threshold to control the communicator to transmit a notification message to the second terminal based on the information corresponding to the motion of the first terminal and the information corresponding to the motion of the second terminal.

The controller may be further configured to control the communicator to notify the message in response to information indicating the motion of the first terminal that the first terminal is moving and information indicating the motion of the second terminal that the second terminal is not moving Transfer to the second terminal.

The communicator can be further configured to perform short-range wireless communication with the second terminal, and the controller can be further configured to be based on a signal for short-range wireless communication detected by the first terminal The strength determines the distance between the first terminal and the second terminal.

The communicator can be further configured to receive information corresponding to a distance between the first terminal and the second terminal from the second terminal, and the controller can be further configured to be based on the detected signal The intensity correction corresponds to the received information of the distance between the first terminal and the second terminal, and determines the distance between the first terminal and the second terminal.

The controller may be further configured to switch the operating mode of the first terminal in response to information indicating the motion of the first terminal that the first terminal is not moving and information indicating the motion of the second terminal that the second terminal is moving For standby mode.

The controller can be further configured to control the communicator to transmit a notification message to the second terminal in response to the distance being greater than or equal to a threshold and the first terminal receiving a designated input.

In accordance with an aspect of another exemplary embodiment, a first terminal configured to operate with a second terminal is provided, the first terminal comprising: a sensor configured to obtain a correspondence Information of motion of the first terminal; a communicator configured to receive information corresponding to motion of the second terminal from the second terminal; and a controller configured to respond to the The distance between a terminal and the second terminal is greater than or equal to a threshold to control the display to display a notification message based on information corresponding to the motion of the first terminal and information corresponding to the motion of the second terminal.

The controller may be further configured to control the display to display the notification message in response to information indicating the motion of the second terminal that the second terminal is moving and information indicating the motion of the first terminal that the first terminal is not moving.

The controller may be further configured to move based on the second terminal indicated by comparing the direction of movement of the first terminal indicated by the information corresponding to the motion of the first terminal with the information of the motion corresponding to the second terminal As a result of the direction, the display is controlled to display a notification message.

In accordance with an aspect of another exemplary embodiment, a second terminal configured to operate with a first terminal is provided, the second terminal comprising: a sensor configured to obtain a correspondence Information for movement of the second terminal; the communicator configured to transmit information corresponding to motion of the second terminal to the first terminal and to receive information corresponding to an operation from the first terminal, The operation is determined based on information corresponding to the motion of the second terminal; and a controller configured to perform an operation determined based on the received information.

According to an aspect of another exemplary embodiment, there is provided a method of controlling a first terminal operable with a second terminal, the method comprising: obtaining information corresponding to motion of the first terminal; receiving a correspondence from the second terminal Information about the motion of the second terminal; and in response to the distance between the first terminal and the second terminal being greater than or equal to a threshold, based on information corresponding to the motion of the first terminal and information corresponding to the motion of the second terminal A notification message is transmitted to the second terminal.

The outputting may include displaying the notification message in response to information indicating a motion of the first terminal that the first terminal is moving and information indicating a motion of the first terminal that the second terminal is not moving.

The method may further include: performing short-range wireless communication with the second terminal; and determining between the first terminal and the second terminal based on an intensity of a signal detected by the first terminal for short-range wireless communication distance.

The transmitting can include transmitting the notification message to the second terminal in response to the determined distance being greater than or equal to the threshold.

The method can further include receiving, from the second terminal, information corresponding to a distance between the first terminal and the second terminal.

The determining the distance may include correcting the received information corresponding to the distance between the first terminal and the second terminal based on the strength of the detected signal.

The method may further include switching an operation mode of the first terminal to a standby mode in response to information indicating a motion of the first terminal that the first terminal is not moving and information indicating a motion of the second terminal that the second terminal is moving .

The transmitting may include transmitting the notification message to the second terminal in response to the distance being greater than or equal to a threshold and the first terminal receiving a designated input.

According to an aspect of another exemplary embodiment, there is provided a method of controlling a first terminal operable with a second terminal, the method comprising: obtaining information corresponding to motion of the first terminal; receiving a correspondence from the second terminal Information about the motion of the second terminal; and in response to the distance between the first terminal and the second terminal being greater than or equal to a threshold, based on information corresponding to motion of the first terminal and information output corresponding to motion of the second terminal A notification message.

The outputting may include displaying the notification message in response to information indicating a motion of the second terminal that the second terminal is moving and information indicating a motion of the first terminal that the first terminal is not moving.

The outputting may include displaying based on a result of comparing a moving direction of the first terminal indicated by information corresponding to motion of the first terminal with a moving direction of the second terminal indicated by information corresponding to motion of the second terminal Notification message.

According to an aspect of another exemplary embodiment, there is provided a method of controlling a second terminal operable with a first terminal, the method comprising: obtaining information corresponding to motion of the second terminal; corresponding to the second terminal Transmitting information of the motion to the first terminal; receiving information corresponding to an operation from the first terminal, the operation being determined based on information corresponding to motion of the second terminal; and performing the performing based on the received information operating.

In accordance with an aspect of another exemplary embodiment, a terminal is provided, the terminal including: a sensor configured to obtain information corresponding to a first state of the terminal; a communicator; and a controller The controller is configured to: control the communicator to establish a connection with another terminal, control the communicator to receive information corresponding to a second state of another terminal from another terminal, and based on the first state And the second state performs an operation.

The terminal may further include an input/output interface.

The controller can be further configured to control the input/output interface to output an audio signal.

The first state and the second state may indicate a change in distance between the terminal and another terminal, and the operation may include increasing an output audio signal in response to the first state and the second state indicating that the distance is increasing The amount, and in response to the first state and the second state, indicates that the distance is decreasing to reduce the amount of output audio signal.

The controller can be further configured to perform the operation based on the first state and the second state in response to the distance between the terminal and another terminal being greater than a threshold.

The controller can be further configured to determine a threshold based on at least one of environmental information detected by the terminal or environmental information detected by another terminal.

The terminal may further include a brightness sensor.

The controller can be further configured to determine a threshold based on the amount of ambient light sensed by the brightness sensor.

The controller may be further configured to perform the operation based on the first state and the second state in response to the distance between the terminal and another terminal being greater than a threshold for a predetermined period of time.

The operations may include controlling the communicator to terminate the connection.

In the following, some exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the illustrative embodiments may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, some of the illustrative embodiments are provided so that this disclosure will be thorough and complete, and some exemplary embodiments will fully convey the scope of one or more exemplary embodiments personnel. In the drawings, some of the elements are omitted for clarity and the same reference numerals will be used throughout the description. When preceded by a list of components, such as "at least one of" is used to modify a list of the various elements and does not modify the individual elements of the list.

Throughout the specification, when a part is referred to as "connected to" another part, it is understood to be "directly connected" to another part or "electrically connected" to another part via another element. In addition, the terms "includes", "including", "comprises" and/or "comprising" as used herein shall be understood to mean the existence of the stated feature or component. The existence or addition of one or more other features or components is not excluded.

In the following, certain exemplary embodiments will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of a first terminal 100 in accordance with an exemplary embodiment.

As shown in FIG. 1, the first terminal 100 can include a sensor 110 (eg, a sensor unit), a communicator 120 (eg, a communicator unit), and a controller 130 (eg, a control unit). However, the description is only an example, and the first terminal 100 can be implemented using more alternatives, additions, or fewer components than those shown in FIG. The first terminal 100 may include a mobile phone, a smart phone, a tablet (PC), a laptop (PC), an e-book terminal, a digital multimedia broadcasting (DMB) terminal, and a personal digital assistant (PDA). One of a plurality of devices of a portable multimedia player (PMP), a navigation device, a television (TV), or a personal computer (PC).

The sensor 110 can obtain the first sensor information. The first sensor information refers to information about the state of the first terminal 100 or the state of the environment surrounding the first terminal 100, and the information is detected by the first terminal 100. For example, if the sensor 110 includes an acceleration sensor, the first sensor information may include an acceleration value generated when detecting a physical motion of the first terminal 100. The configuration of the sensor 110 and the first sensor information may vary in accordance with various exemplary embodiments.

The communicator 120 can perform communication with the second terminal 300 of FIG. For example, if the first terminal 100 and the second terminal 300 are close to each other, the communicator 120 can transmit data to or receive data from the second terminal 300 by using a short-range wireless communication method. The communicator 120 can receive at least one of the second sensor information and the information about the second state from the second terminal 300. The second sensor information may refer to information about the state of the second terminal 300 or information about the state of the environment surrounding the second terminal 300, the information being detected by the second terminal 300. For example, the second sensor information may include an acceleration value obtained by detecting the physical motion of the second terminal 300 by using the acceleration sensing. The second state may indicate the state of the second terminal 300. For example, the second state may indicate whether the second terminal 300 is moving or whether the user is using the second terminal 300.

The controller 130 can control respective components of the first terminal 100 and process information for processing operations of the first terminal 100. The controller 130 can determine a first state based on the first sensor information. The first state may indicate the state of the first terminal 100. For example, the first state may indicate whether the first terminal 100 is moving or whether the user is using the first terminal 100. Additionally, controller 130 can determine a second state. The second state may be the state of the second terminal 300. When the second sensor information is received by the communicator 120, the controller 130 may determine the second state based on the received second sensor information. Alternatively, if information about the second state is received by the communicator 120, the controller 130 may determine the second state based on the received information.

Further, the controller 130 may determine the distance between the first terminal 100 and the second terminal 300. According to an exemplary embodiment, the distance between the first terminal 100 and the second terminal 300 may be determined based on a received signal strength indicator (RSSI) of the radio frequency signal received by the communicator 120. For example, if the RSSI is about -100 decibel-milliwatts (dBm) to about -80 dBm, the controller 130 may determine that the distance between the first terminal 100 and the second terminal 300 is about 2 meters. (m). Furthermore, since the RSSI becomes stronger, the controller 130 may determine that the distance between the first terminal 100 and the second terminal 300 is reduced.

According to an exemplary embodiment, the communicator 120 may receive information regarding the distance between the first terminal 100 and the second terminal 300 from the second terminal 300. The information about the distance received from the second terminal 300 may include information about the RSSI detected by the second terminal 300 or the distance determined by the second terminal 300. The controller 130 can determine a more precise distance by further reflecting information about the distance received from the second terminal 300. For example, the controller 130 may determine the distance between the first terminal 100 and the second terminal 300 based on the average RSSI, the distance detected by the first terminal 100, and the RSSI or the distance detected by the second terminal 300.

Further, the controller 130 may determine an operation to be performed based on both the first state and the second state and the distance between the first terminal 100 and the second terminal 300. Alternatively, the controller 130 may determine an operation to be performed based on one of the first state and the second state and a distance between the first terminal 100 and the second terminal 300.

The controller 130 can perform the determined operation by controlling components of the first terminal 100. The determined operation can refer to the functions provided by the first terminal 100. For example, the determined operation may be to display a message, transmit information to another device, or switch an operational mode of the first terminal 100.

FIG. 2 is a block diagram of a first terminal 100, in accordance with an exemplary embodiment. However, the description is merely an example, and the first terminal 100 may be implemented using alternatives, additions, or fewer components than those shown in FIG. 2.

Referring to FIG. 2, the first terminal 100 may include a sensor 110, a communicator 120, a controller 130, a GPS device 140 (eg, a GPS module or a GPS), a camera 150 (eg, a camera module), and an input/output interface. 160 (eg, an input/output module or user interface), a storage 170 (eg, a storage unit), and a power supply 180 (eg, a power supply unit). The communicator 120 can include at least one of a mobile communicator 121 (e.g., a mobile communication module), a sub communicator 122 (e.g., a sub-communication module), and a multimedia module 123. The sub communicator 122 can include at least one of a wireless LAN module 122-1 and a short range wireless communicator 122-2 (eg, a short range wireless communication module). The multimedia module 123 may include at least one of a broadcast communicator 123-1 (eg, a broadcast communication module), an audio playback (Audio Playback) module 123-2, and a Moving Picture Playback module 123-3. By.

The sensor 110 can include at least one sensor. For example, the sensor module may include an acceleration sensor, a geomagnetic sensor, a gyro sensor, a heart rate sensor, a proximity sensor, and brightness. Luminance sensor, touch sensor, fingerprint sensor, iris sensor, blood pressure sensor, temperature sensor, muscle sensor, atmospheric pressure At least one of a sensor, a blood sugar sensor, a brain wave sensor, and a humidity sensor. The acceleration sensor refers to a sensor capable of detecting an acceleration applied to the first terminal 100. The geomagnetic sensor can detect the direction of the geomagnetic field detected at the position of the first terminal 100. The gyro sensor can detect the rotational motion of the first terminal 100. The heart rate sensor detects the user's heart rate. The proximity sensor detects the distance between the object and the proximity sensor. The brightness sensor can detect the intensity of ambient light around the first terminal 100. The touch sensor detects contact points (eg, fingers) of the touch material and the position of the detected contact points. The fingerprint sensor can detect information about the user's fingerprint. The iris sensor detects information about the user's iris. The blood pressure sensor detects the user's blood pressure. The temperature sensor can detect the temperature inside or outside the first terminal 100. The muscle sensor detects muscle movement. The atmospheric pressure sensor can detect atmospheric pressure around the first terminal 100. The blood glucose sensor can detect the amount of blood sugar included in blood (eg, a blood sample). The brain wave sensor can detect the user's brain waves by using, for example, an electrode or the like. The humidity sensor can detect the humidity around the first terminal 100.

The communicator 120 can be connected to the second terminal 300 or an external device (such as an external server) by using at least one of the mobile communicator 121, the sub communicator 122, and the multimedia module 123.

The mobile communicator 121 can be controlled by the controller 130 to connect the first terminal 100 to an external device using at least one or more antennas via mobile communication. The mobile communicator 121 can transmit a wireless signal for a voice call, a video call, a short message service (operating SMS) or a multimedia message service (MMS) to a mobile phone, a smart phone, a tablet (PC) or corresponding to an input to Any of various other devices of the telephone number of the first terminal 100 / any of a mobile phone, a smart phone, a tablet (PC), or various other devices corresponding to the phone number input to the first terminal 100 Receive wireless signals for voice calls, video calls, short message service (operating SMS) or multimedia messaging service (MMS).

The sub communicator 122 can include at least one of a wireless LAN module 122-1 and a short range wireless communicator 122-2. The sub communicator 122 may include only the wireless LAN module 122-1, only the short-range wireless communicator 122-2 or the wireless LAN module 122-1 and the short-range wireless communicator 122-2.

The wireless LAN module 122-1 can be connected to another device at a location such as the Internet or an access point (AP) under the control of the controller 130. The wireless LAN module 122-1 can support the Wireless LAN standard (IEEE802.11x) of the Institute of Electrical and Electronics Engineers (IEEE). The short-range wireless communicator 122-2 can perform short-range wireless communication between the first terminal 100 and the second terminal 300 under the control of the controller 130. Wireless short-range wireless communication methods may include technologies such as Bluetooth( ^TM ), Infrared Data Association (IrDA) communication, Near Field Communication (NFC), or ZigBee.

According to an exemplary embodiment, the controller 130 may determine the distance between the first terminal 100 and the second terminal 300 based on the RSSI of the wireless frequency signal received by the short-range wireless communicator 122-2. For example, the second terminal 300 may generate a wireless frequency signal for wireless short-range wireless communication of a preset intensity (for example, 21 dB), and the first terminal 100 may measure the strength of the received wireless frequency signal. The controller 130 of the first terminal 100 may determine the distance d between the first terminal 100 and the second terminal 300 based on the measured intensity of the radio frequency signal according to Equation 1 below.

[Equation 1]

In Equation 1, c represents the propagation rate, f represents the frequency, and L represents the loss of signal strength. The propagation rate of the wireless signal in the air has a constant value. The frequency is a frequency used to perform short-range wireless communication designation. Further, the loss of signal strength can be obtained based on the difference between the intensity of the radio frequency signal generated by the second terminal 300 and the strength of the received radio frequency signal. Therefore, the controller 130 can determine the distance d between the first terminal 100 and the second terminal 300 according to Equation 1 above.

Based on the performance of the first terminal 100, the first terminal 100 may include at least one of the mobile communicator 121, the sub communicator 122, and the short range wireless communicator 122-2.

The multimedia module 123 can include at least one of a broadcast communicator 123-1, an audio playback module 123-2, and a motion picture playback module 123-3. The broadcast communicator 123-1 may receive a broadcast signal (for example, a TV broadcast signal, a radio broadcast signal, or a material broadcast signal) transmitted by a broadcast station via a broadcast communication antenna and additional broadcast information (for example, an electronic program) under the control of the controller 130. Guide (EPG) or Electronic Service Guide (ESG). The audio playback module 123-2 can play back the stored or received digital audio files under the control of the controller 130. The moving picture playback module 123-3 can play back digital moving picture files (eg, video files).

The multimedia module 123 may not include the broadcast communicator 123-1, but may include only the audio playback module 123-2 and the moving picture playback module 123-3. In addition, the audio playback module 123-2 or the moving picture playback module 123-3 may be included in the controller 130.

The controller 130 may include a central processing unit (CPU) 131, a read-only memory (ROM) 132 in which a control program for controlling the first terminal 100 is stored, and a signal or data stored externally from the first terminal 100 or used. A random access memory (RAM) 133 as a memory space in the first terminal 100 to perform a task. The CPU 131 may include a single core or multiple cores, and may be a single core processor, a dual core (two core) processor, a three core (three core) processor, and a quad core (four core) processor. The CPU 131, the ROM 132, and the RAM 133 may be connected to each other via an internal bus bar.

The controller 130 can control the communicator 120, the camera 150, the GPS device 140, the input/output interface 160, the sensor 110, the storage 170, the power supply 180, and the display 190 (eg, a display unit).

The GPS device 140 may receive radio wave signals from a plurality of GPS satellites in the earth's orbit, and calculate the position of the first terminal 100 based on the time at which the signals arrive at the first terminal 100 from the GPS satellites.

The input/output interface 160 may include at least one of a button 161, a microphone 162, a speaker 163, a vibration motor 164, a connector 165, and a keypad 166.

The button 161 may be formed on a front surface, a side surface, or a rear surface of the housing of the first terminal 100, and may include at least one of a power/lock button, a volume button, a menu button, a home button, a back button, and a search button .

The microphone 162 can receive voice or sound and generate an electrical signal under the control of the controller 130.

The speaker 163 can output sound corresponding to various signals received from the mobile communicator 121, the sub communicator 122, the multimedia module 123, or the camera 150.

The vibration motor 164 can convert an electrical signal into mechanical vibration under the control of the controller 130. For example, when the first terminal 100 set to the vibration mode receives a voice call from another device, the vibration motor 164 can be operated. If the display 190 includes a touch screen, the vibration motor 164 can be operated in response to continuous movement of the user's touch on the touch screen or the touch input on the touch screen.

The connector 165 can be used as an interface for interconnecting the first terminal 100 with an external device or a power source. Under the control of the controller 130, the material stored in the storage 170 of the first terminal 100 may be transmitted to an external device or may receive data from the external device via a cable connected to the connector 165. The power can be input from a power source or can be charged via a cable connected to the connector 165.

The keypad 166 can receive a key input for controlling the first terminal 100 from a user. The keypad 166 can include a physical keypad formed at the first terminal 100 or a virtual keypad displayed at the display 190. The physical keypad formed at the first terminal 100 can be ignored according to the performance or structure of the first terminal 100.

The storage 170 can correspond to the operations of the mobile communicator 121, the sub communicator 122, the multimedia module 123, the camera 150, the GPS device 140, the input/output interface 160, the sensor 110, and the display 190 under the control of the controller 130. Store signals or data input/output. The storage 170 can store control programs and applications for controlling the first terminal 100 or the controller 130.

The term "storage" may include the storage 170 in the controller 130, the ROM 132, and the RAM 133, or a memory card attached to the first terminal 100. The storage 170 may include non-volatile memory, volatile memory, a hard disk drive (HDD), or a solid state disk drive (operating SSD).

The power supply 180 may supply power to at least one battery disposed in a housing of the first terminal 100 under the control of the controller 130. Further, the power supply 180 may supply power input from an external power source via a cable connected to the connector 165 to respective components of the first terminal 100.

The display 190 can output a user interface and information corresponding to various services to the user. The display 190 may include a liquid crystal display (LCD), a plasma display panel (PDP), a transparent display, or an elastic display capable of displaying an image. Additionally, display 190 can include a touch screen. The touch screen can generate an analog signal corresponding to at least one touch input to the user interface. The touch screen can receive at least one touch input via a body part of the user (eg, a finger) or a touch input unit (eg, a stylus). The touch screen can receive continuous motion of at least one touch input.

The touch input is not limited to input based on contact between the touch screen and the user's body part or the touch input unit, and may include non-contact input (eg, based on the distance between the touch screen and the body part is less than Or equal to 1 mm (mm) input). The distance detected by the touch screen may vary depending on one or more exemplary embodiments of the first terminal 100. The touch screen can be implemented in resistive, capacitive, infrared or ultrasonic mode.

The display 190 can convert the analog signal generated by the touch screen into a digital signal (for example, an X coordinate and a Y coordinate), and transmit the digital signal to the controller 130. Controller 130 can receive the digital signal received from display 190 as a user input.

FIG. 3 is a block diagram of a second terminal 300, in accordance with an exemplary embodiment.

As shown in FIG. 3, the second terminal 300 may include a sensor 310, a communicator 320, and a controller 330. However, in accordance with one or more exemplary embodiments, the second terminal device 300 may include alternative or additional components or may not include all of the components shown in FIG. As a non-limiting example, the second terminal 300 can be a wearable device (such as a smart watch and smart glasses), a mobile phone, a smart phone, a tablet (PC), a laptop (PC), an e-book terminal, Digital Multimedia Broadcasting (DMB) terminal, personal digital assistant (PDA), portable multimedia player (PMP), navigation device, TV or PC.

The sensor 310 can obtain second sensor information. The second sensor information refers to information detected by the second terminal 300 regarding the state of the second terminal 300 or the state of the environment surrounding the second terminal 300. For example, if the sensor 310 includes an acceleration sensor, the second sensor information may include an acceleration value generated when detecting a physical motion of the second terminal 300. The configuration of sensor 310 and the second sensor information may vary in accordance with various exemplary embodiments.

The communicator 320 can perform communication with the first terminal 100 of FIG. For example, if the first terminal 100 and the second terminal 300 are close to each other, the communicator 320 can transmit data to or receive data from the first terminal 100 by using a short-range wireless communication method. The communicator 320 can transmit at least one of the second sensor information and the information about the second state to the first terminal 100. The second sensor information may refer to information about the state of the second terminal 300 or information about the state of the environment surrounding the second terminal 300, the information being detected by the second terminal 300. For example, the second sensor information may include an acceleration value obtained by detecting the physical motion of the second terminal 300 by using the acceleration sensing. The second state may indicate the state of the second terminal 300. For example, the second state may indicate whether the second terminal 300 is moving or whether the user is using the second terminal 300.

The controller 130 can control the respective components of the second terminal 300 and process information for processing operations of the second terminal 300. According to an exemplary embodiment, the controller 330 may determine the second state based on the second sensor information. The second state may indicate the state of the second terminal 300. For example, the second state may indicate whether the second terminal 300 is moving or whether the user is using the second terminal 300. According to another exemplary embodiment. The second terminal 300 may transmit the second sensor information obtained via the sensor 310 to the first terminal 100 or an external server as the original data via the communicator 320, and receive the first terminal 100 of the second sensor information. Or an external server can determine the second state.

Further, the controller 330 may determine the distance between the first terminal 300 and the second terminal 300. According to an exemplary embodiment, the distance between the first terminal 300 and the second terminal 300 may be determined based on a received signal strength indicator (RSSI) of the radio frequency signal received by the communicator 320. For example, if the RSSI is about -100 dBm to about -80 dBm, the controller 330 can determine that the distance between the first terminal 300 and the second terminal 300 is about 2 meters. Furthermore, if the RSSI becomes stronger, the controller 330 may determine that the distance between the first terminal 300 and the second terminal 300 is reduced. The communicator 320 may transmit information about the distance between the first terminal 100 and the second terminal 300 determined by the controller 330 to the first terminal 100.

Further, the communicator 320 can receive information about an operation from the first terminal 100, the operation being determined based on information about the second state transmitted to the second terminal 300. The controller 330 may perform an operation corresponding to the received information due to receiving information regarding an operation determined based on the information regarding the second state. For example, if an alert message is received from the first terminal 100, the second terminal 300 can input the received alert message.

FIG. 4 is a block diagram of a second terminal 300, in accordance with an exemplary embodiment. The second terminal 300 can be implemented, replaced, or implemented with fewer components than those shown in FIG.

Referring to FIG. 4, the second terminal 300 can include a sensor 310, a communicator 320, a controller 330, a GPS device 340, a camera 350, an input/output interface 360, a storage 370, and a power supply 380. The communicator 320 can include at least one of the mobile communicator 321, the sub communicator 322, and the multimedia module 323. The sub communicator 322 can include at least one of a wireless LAN module 322-1 and a short range wireless communicator 322-2. The multimedia module 323 can include at least one of a broadcast communicator 323-1, an audio playback module 323-2, and a moving picture playback module 323-3. The input/output interface 360 can include at least one of a button 361, a microphone 362, a speaker 363, a vibration motor 364, a connector 365, and a keypad 366.

The sensor 310 can include at least one sensor. For example, the sensor module may include an acceleration sensor, a geomagnetic sensor, a gyro sensor, a heart rate sensor, a proximity sensor, a brightness sensor, a touch sensor, and a fingerprint. At least one of a sensor, an iris sensor, a blood pressure sensor, a temperature sensor, a muscle sensor, an atmospheric pressure sensor, a blood glucose sensor, a brain wave sensor, and a humidity sensor .

The multimedia module 323 can include at least one of a broadcast communicator 323-1, an audio playback module 323-2, and a moving picture playback module 323-3.

The controller 330 may include a CPU 331, a ROM 332 in which a control program for controlling the second terminal 300 is stored, and a signal or material stored externally output from the second terminal 300 or used as a memory space in the second terminal 300. Perform a task of RAM 333.

The various components of the second terminal 300 may have similar structures and functions to the corresponding components of the first terminal device 100 described with reference to FIG.

FIG. 5 is a flowchart showing a flow of controlling the first terminal 100, according to an exemplary embodiment.

First, the first terminal 100 can establish communication (e.g., connection) with the second terminal 300. For example, the first terminal 100 may be paired with the second terminal 300 to perform Bluetooth communication with the second terminal 300. The "paired state" may refer to a state in which two devices recognize each other for performing communication.

The first state 100 may determine a first state for indicating a state of the first terminal 100 (operation S510). In operation S510, the first terminal 100 may obtain the first sensor information by using the sensor and determine a first state corresponding to the first sensor information. For example, if the first sensor information includes an acceleration value, the controller 130 of the first terminal 100 may determine whether the first terminal 100 is moving based on the acceleration value. The controller 130 may determine the first state based not only on the acceleration value corresponding to the time point at which the first state is determined, but also based on the acceleration value accumulated in the set time period. For example, if the average acceleration value within 10 seconds is greater than or equal to the threshold, the controller 130 may determine that the first terminal 100 is moving.

Further, the first terminal 100 may determine a second state for indicating the state of the second terminal 300 (operation S520). In operation S520, the first terminal 100 may receive second sensor information or information about the second state from the second terminal 300. If the second sensor information is received from the second terminal 300, the first terminal 100 may determine the second state in a manner similar to the operation S510. Alternatively, if information regarding the second state is received, the first terminal 100 may determine the second state without performing a separate flow of determining the second state. The first terminal 100 may receive the second sensor information when generating the second sensor information or may generate information about the second state generated at a constant period. The first terminal 100 can receive second sensor information from the second terminal 300 continuously, semi-continuously, regularly, periodically, or sporadically.

The first state and the second state may be used to indicate various states of the first terminal 100 and the second terminal 300, respectively, in accordance with various exemplary embodiments. For example, the first state and the second state may indicate whether the first terminal 100 and the second terminal 300 are held or worn by the mobile user. In another example, the first state and the second state may also indicate whether the person holding the first terminal 100 and the second terminal 300 is a driver or a passenger. For example, the moving speed of the GPS coordinates of the first terminal 100 and the second terminal 300 may be included in indicating the range of the user in the car. For example, if the second terminal 300 is a smart watch worn on the wrist, whether the user is the driver or the passenger can be based on whether the motion detected by the second terminal 300 via the sensor 310 is the movement of the steering wheel. To decide.

Next, the controller 130 of the first terminal 100 may perform an operation determined based on at least one of a distance between the first terminal 100 and the second terminal 300, the determined first state, and the determined second state. (Operation S530). The first terminal 100 can determine the distance between the first terminal 100 and the second terminal 300 by using various methods in accordance with various exemplary embodiments. For example, the first terminal 100 may determine the distance between the first terminal 100 and the second terminal 300 based on the RSSI of the radio frequency signal used for short-range wireless communication with the second terminal 300. The first terminal 100 can improve the accuracy of the determined distance by further reflecting the distance information received from the second terminal 300. In another example, the first terminal 100 can determine the first terminal 100 and the second by using the GPS coordinates of the first terminal 100 obtained by the GPS device 140 and the GPS coordinates of the second terminal 300 obtained by the GPS device 340. The distance between the terminals 300.

The operations that need to be performed by the first terminal 100 may vary according to various exemplary embodiments. According to another exemplary embodiment, the first terminal 100 may provide a function for preventing terminal loss based on an operation performed in operation S530. If the first terminal 100 is a smart phone and the second terminal 300 is a wearable device, the notification message may be lost/stealed when the distance between the first terminal 100 and the second terminal 300 becomes greater than or equal to a threshold. Provided to the user. For example, if the first state indicates that the first terminal 100 is not moving and the second state indicates that the user is wearing the second terminal 300 and the second terminal 300 is moving, the first terminal 100 may determine that the user is moving and first The terminal 100 is left behind. Therefore, since the distance between the first terminal 100 and the second terminal 300 becomes greater than a threshold, the first terminal 100 can be set to a standby mode to reduce power consumption by the first terminal 100.

In addition, if the first state indicates that the first terminal 100 is moving and the second state indicates that the user is wearing the second terminal 300, if the distance between the first terminal 100 and the second terminal 300 becomes greater than a critical value, A terminal 100 can determine that the first terminal 100 is stolen. For example, the second state may indicate that the second terminal 300 of the wearable device is worn by the user and moves in one direction, while the first state may indicate that the first terminal 100 is moving in the other direction. In this case, if the distance between the first terminal 100 and the second terminal 300 becomes greater than or equal to a critical value (for example, 3 meters), it may be determined that the first terminal 100 is stolen. In another example, the first state may be a result of analyzing motion of the first terminal 100 and the second state may be a result of analyzing motion of the second terminal 300. If the second state indicates that the second terminal 300 of the wearable device has not moved and the first state indicates that the user of the first terminal 100 is walking, it may be determined that the first terminal 100 is stolen. However, one or more exemplary embodiments are not limited thereto.

If it is determined that the first terminal 100 is stolen, the first terminal 100 may transmit the theft notification message to the second terminal 300 and may perform a data protection mode for protecting the data stored in the first terminal 100.

The first state and the second state may also indicate whether the user is walking or stopping. In this case, the first terminal 100 can determine whether the user is walking by using, for example, a mode regarding the acceleration value. For example, the first terminal 100 may determine whether the user is walking based on the magnitude, direction, and period of the repeated acceleration values. Specifically, if the first sensor information or the second sensor information includes a pattern in which the similar change of the acceleration value is periodically repeated in any part and the analysis result of all the arbitrary parts indicates that the position of the terminal has changed, then A terminal 100 may decide that the person holding the first terminal 100 or the second terminal 300 is walking. In addition, if the size of the repeating mode and the position of the terminal change more than the size and speed of the situation in which the person holding the first terminal 100 or the second terminal 300 is walking, the first terminal 100 may decide to hold the first A person of a terminal 100 or a second terminal 300 is running. However, one or more exemplary embodiments are not limited thereto.

According to another exemplary embodiment, the first terminal 100 may decide an operation to be performed and perform the determined operation based on a speed at which the distance between the first terminal 100 and the second terminal 300 changes. For example, if the distance between the first terminal 100 and the second terminal 300 increases at a speed greater than or equal to a threshold, the first terminal 100 may perform an operation for storing backup data or prepare for impact to the first Other operations of the terminal 100. In other words, if the user drops the first terminal 100, the distance between the first terminal 100 and the second terminal 300 increases extremely rapidly. Therefore, in this case, the first terminal 100 can perform an operation corresponding to the state in which the user drops the first terminal 100. In another example, the distance between the first terminal 100 and the second terminal 300 may increase rapidly, and the first state determined based on the first sensor information obtained via the acceleration sensor may indicate that a large amount of impact is applied to the first A terminal 100. In this case, the first terminal 100 may determine that the user loses the first terminal 100 and transmits a notification message that notifies the user to the first terminal 100 to the second terminal 300. The user can recognize that he or she has dropped the first terminal 100 based on the notification message displayed on the second terminal 300. Therefore, the user can be prevented from losing the first terminal 100. However, one or more exemplary embodiments are not limited thereto.

The critical value is not limited to a specific value, and a specific range may also be referred to as a critical value. For example, the threshold can be 2 meters, or the range of 1.5 meters to 2.5 meters can be a critical value.

Further, the case where the distance between the two terminals is greater than or equal to the critical value may include various cases. For example, the case where the distance between the two terminals is greater than or equal to the threshold may include a case where the signal strength between the two terminals is less than or equal to the threshold. Further, the case where the distance between the two terminals is greater than or equal to the threshold may include a signal obtained based on a difference between the intensity of the radio frequency signal generated by the second terminal 300 and the strength of the received radio frequency signal. The case where the loss of strength is greater than or equal to the critical value. In other words, even if the distance between the two terminals is not directly obtained based on the calculation, if the variable for calculating the distance between the two terminals (for example, L of Equation 1) determines that the distance between the two terminals is greater than or equal to the criticality The value, then the decision based on the variable may be one for determining whether the distance between the two terminals is greater than or equal to the threshold.

According to another exemplary embodiment, the first terminal 100 may provide a function for preventing a child from being lost based on an operation performed in operation S530. If the second terminal 300 is a wearable device, the user can attach the second terminal 300 to the child, and the user (children's parents) can hold the first terminal 100. If the distance between the first terminal 100 and the second terminal 300 is greater than a threshold and the second state indicates that the second terminal 300 has not moved, the first terminal 100 may not perform any operation. However, if the first state indicates that the first terminal 100 is not moving and the second state indicates that the second terminal 300 is moving, the first terminal 100 may output an alarm. Further, if the first state and the second state indicate that the first terminal 100 and the second terminal 300 are moving in different directions, the first terminal 100 may output an alarm.

According to another exemplary embodiment, the first terminal 100 may perform advanced synchronization based on an operation performed in operation S530. The term "advanced synchronization" may refer to an operation in which the first terminal 100 continuously or periodically updates the state of the second terminal 300. For example, if the first state indicates that the first terminal 100 is not moving, the second state indicates that the second terminal 300 is moving, and the distance between the first terminal 100 and the second terminal 300 is reduced to a distance less than a threshold value, Then the first terminal 100 can initiate advanced synchronization. In other words, when the user holding the second terminal 300 approaches the stationary first terminal 100, the first terminal 100 can initiate advanced synchronization. Alternatively, if the first state indicates that the user holding the second terminal 300 keeps the first terminal 100 for the display of the first terminal 100 facing the user, the first terminal 100 can initiate advanced synchronization. Whether the user holds the first terminal 100 can be determined based on whether the touch input is received by the touch sensor of the first terminal 100. In addition, whether the user holds the first terminal 100 such that the display of the first terminal 100 can be included in the first sensing based on information about the rotation of the first terminal 100 detected via the gyro sensor to the user. In the information to decide. Alternatively, whether the user holds the first terminal 100 such that the display of the first terminal 100 faces the user may be based on a motion recognition via movement for identifying the user of the display facing the first terminal 100. Whether the obtained information is included in the first sensor information is determined.

According to another exemplary embodiment, the first terminal 100 may maintain or terminate communication established between the first terminal 100 and the second terminal 300 based on an operation performed in operation S530. For example, if the distance between the first terminal 100 and the second terminal 300 is greater than a threshold and is maintained for a set period of time, the first terminal 100 and the second terminal 300 may be maintained or terminated based on the second state. Communication between. If the second state indicates that the user holds or wears the second terminal 300, the first terminal 100 can maintain communication with the second terminal 300. However, if the second state indicates that the user does not hold or wear the second terminal 300, the first terminal 100 may terminate communication with the second terminal 300.

The second state used to indicate whether the user holds or wears the second terminal 300 can be determined by using various methods in accordance with various exemplary embodiments. For example, if the biometric information about the user is via a sensor for obtaining biometric information of the user, such as a heart rate sensor, a fingerprint sensor included in the second terminal 300, When the iris sensor, the brain wave sensor, and the temperature sensor are obtained, the second terminal 300 may determine that the user has the second terminal 300 or is wearing the second terminal 300. In other words, if the user's heart rate information, fingerprint information, iris information, brain wave information, or body temperature information is obtained via the sensor 310, the second terminal 300 may determine that the user has the second terminal 300 or is wearing the second terminal 300. In another example, if the user's contact is detected by the touch sensor included in the second terminal 300 when the user holds the second terminal 300, the second terminal 300 may determine that the user has the second The terminal 300 is wearing the second terminal 300. However, one or more exemplary embodiments are not limited thereto.

In another example, the first terminal 100 may control the volume output from the speaker 163 or the intensity of the vibration generated by the vibration motor 164 based on the distance between the first terminal 100 and the second terminal 300 in operation S530. For example, the volume output from the speaker 163 may increase as the distance between the first terminal 100 and the second terminal 300 increases. In particular, the second terminal 300 may be a wearable device (such as a smart watch), and the first terminal 100 may be a device (such as a TV) capable of displaying playback audio content. If the user wears the second terminal 300 and leaves the still first terminal 100 when the first terminal 100 plays back the audio content, the first terminal 100 may increase the audio when the distance between the first terminal 100 and the second terminal 300 increases. The volume of the content. In another example, the first terminal 100 can be a portable device (such as a smart phone) and the second terminal 300 can be a wearable device (such as a smart watch). Regarding the second state of the second terminal 300 worn by the user indicating that the second terminal 300 is not moving and indicating that the first terminal 100 is moving with respect to the first state of the first terminal 100, the second terminal 300 can use the vibration motor 364 by using Vibration is generated to inform the user that the first terminal 100 may be lost. The second terminal 300 may increase the intensity of the vibration when the distance between the first terminal 100 and the second terminal 300 increases. However, one or more exemplary embodiments are not limited thereto.

According to another exemplary embodiment, in operation S530, the first terminal 100 may perform an operation based on the distance between the first terminal 100 and the second terminal 300 and the first state. For example, when the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold and the first state indicates that a shock is applied to the first terminal 100, the first terminal 100 may determine the first terminal. 100 fell on the ground. Specifically, the state of the first terminal 100 can be determined by detecting an impact of a sensor of the first terminal 100, such as an acceleration sensor, a pressure sensor, and a pressure sensor. The method for determining the state of the first terminal 100 due to the application of an impact will be apparent to those skilled in the art, and thus a detailed description thereof will be omitted.

When it is determined that the first state 100 falls on the ground, the first terminal 100 may transmit a notification message notifying the user that the first terminal 100 is dropped on the ground to the second terminal 300.

FIG. 6 is a sequence diagram showing operations of the first terminal 100 and the second terminal 300, according to an exemplary embodiment.

First, the first terminal 100 and the second terminal 300 can establish short-range wireless communication therebetween (operation S600). Short-range wireless communication refers to a communication method of transmitting or receiving data within a specified distance. For example, short-range wireless communication may include technologies such as Bluetooth( ^TM ), Infrared Data Association (IrDA) communication, Near Field Communication (NFC), or ZigBee.

The first terminal 100 can obtain the first sensor information by using the sensor 110 (operation S610). The second terminal 300 can obtain the second sensor information by using the sensor 310 (operation S615). The first terminal 100 may determine the first state based on the obtained first sensor information (operation S620).

The second terminal 300 may transmit the second sensor information obtained in operation S615 to the first terminal 100 (operation S630). The second terminal 300 may transmit the obtained second sensor information to the first terminal 100 when the second sensor information is obtained in real time in operation S615. Alternatively, the second terminal 300 may compress the accumulated second sensor information and cyclically transmit the compressed second sensor information to the first terminal 100.

The first terminal 100 may determine the second state based on the second sensor information received from the second terminal 300 (operation S640).

The first terminal 100 may determine a distance between the first terminal 100 and the second terminal 300 (operation S650).

Next, the first terminal 100 may perform an operation based on at least one of a distance between the first terminal 100 and the second terminal 300, information about the first state, and information about the second state (operation S660) .

FIG. 7 is a sequence diagram showing operations of the first terminal 100 and the second terminal 300 in accordance with another exemplary embodiment.

First, the first terminal 100 and the second terminal 300 can establish short-range wireless communication therebetween (operation S700).

The first terminal 100 can obtain the first sensor information by using the sensor 110 (operation S710). The second terminal 300 can obtain the second sensor information by using the sensor 310 (operation S715). The first terminal 100 may determine the first state based on the obtained first sensor information (operation S720). The second terminal 300 may determine the second state based on the obtained second sensor information (operation S725).

Next, the second terminal 300 may transmit information about the second state determined in operation S725 to the first terminal 100 (operation S730). The second terminal 300 may periodically determine the second state and periodically transmit information about the determined second state to the first terminal 100. According to another exemplary embodiment, the second terminal 300 may transmit the information about the second state and the second sensor information to the first terminal 100 together in operation S730. The first terminal 100 may update the second state based on the information about the second state and the second sensor information received from the second terminal 300.

The first terminal 100 may determine a distance between the first terminal 100 and the second terminal 300 (operation S740). The first terminal 100 can determine the distance between the first terminal 100 and the second terminal 300 by using various methods in accordance with various exemplary embodiments. For example, the first terminal 100 may determine the distance between the first terminal 100 and the second terminal 300 based on the RSSI of the radio frequency signal used for short-range wireless communication with the second terminal 300. However, one or more exemplary embodiments are not limited thereto. Next, the first terminal 100 may perform an operation determined based on at least one of a distance between the first terminal 100 and the second terminal 300, information about the first state, and information about the second state (operation S750).

FIG. 8 is a sequence diagram showing operations of the first terminal 100 and the second terminal 300 in accordance with another exemplary embodiment.

The first terminal 100 can obtain the first sensor information by using the sensor 110 (operation S810). Similarly, the second terminal 300 can obtain the second sensor information by using the sensor 310 (operation S815).

The first terminal 100 may transmit the obtained first sensor information to the cloud server 800 (S820), and the second terminal 300 may transmit the obtained second sensor information to the cloud server 800 (S830) . The cloud server 800 can determine the first state and the second state based on the sensor information received from the first terminal 100 and the second terminal 300 (operation S840).

Further, when short-range wireless communication is established between the first terminal 100 and the second terminal 300 (operation S850), the first terminal 100 may determine the distance between the first terminal 100 and the second terminal 300 (operation S860). In addition, the first terminal 100 may receive the first state and the second state from the cloud server 800 (operation S870).

Next, the first terminal 100 may perform an operation determined based on at least one of the distance determined in operation S860 and the first state and the second state received in operation S870 (operation S880).

The first terminal 100 and the second terminal 300 can establish communication using various methods in accordance with various exemplary embodiments. For example, as shown in FIG. 9, the first terminal 100 and the second terminal 300 can transmit and receive data to each other via direct communication without an access point (AP). For example, the first terminal 100 and second terminal 300 and may include from Wi-Fi communication method, a communication method hoc (Ad-hoc) method Bluetooth (Bluetooth ^TM) or ZigBee (the ZigBee) among each other via a transmission Receive data.

Further, as shown in FIG. 10, the first terminal 100 and the second terminal 300 can transmit and receive data to each other via the gateway 1000. For example, the first terminal 100 and the second terminal 300 can transmit and receive data via an infrastructure method from a Wi-Fi communication method, a home network or a local area network (LAN) formed by using a gateway. The gateway 1000 can function as an AP.

Furthermore, as shown in FIG. 11, the first terminal 100 and the second terminal 300 can communicate with the cloud server 1100 via a wired or wireless connection. The first terminal 100 and the second terminal 300 may transmit the sensor information to the cloud server 1100, and receive information about the first state and the second state determined based on the sensor information from the cloud server 1100.

12 through 14 are diagrams for describing operations of the first terminal 100 and the second terminal 300, according to an exemplary embodiment.

As shown in FIG. 12, the first terminal 100 can be a smart phone carried by a user, and the second terminal 300 can be a wearable device worn by a user. As shown in FIG. 12, when the threshold value of the distance 1200 between the first terminal 100 and the second terminal 300 is 2 meters, the first terminal 100 or the second terminal 300 may be based on when the distance 1200 is 2 meters. The first state, the second state, and the distance 1200 determine whether to perform an operation.

When short-range wireless communication is established between the smart phone and the wearable device, if the user moves without carrying the smart phone, the distance between the smart phone and the wearable device increases. In this case, the user is likely not using a smart phone. Therefore, as shown in FIG. 13, if the distance between the first terminal 100 and the second terminal 300 is greater than a threshold (for example, 2 meters), the smart phone (which is the first terminal 100) is not moved and can be worn. The device, which is the second terminal 300, moves from the initial position 1300, and the first terminal 100 can switch to a standby mode to reduce power consumption. In this case, the first state indicating the state of the first terminal 100 may indicate that no motion is detected. Additionally, the second state indicating the state of the second terminal 300 can indicate that motion is detected. The standby mode may refer to a mode in which the display, the sensor, and the communicator are not activated.

Further, since the wearable device is worn on the body part of the user, the state in which the wearable device is not moved may refer to a state in which the user has not moved. Therefore, the state in which the smart phone moves and the wearable device does not move may refer to a state in which the smart phone is moved by a person other than the user.

If the first state indicates that motion is detected and the second state indicates that motion is not detected, the first state and the second state may indicate that the first terminal 100 moves from the initial position 1400, as shown in FIG. Therefore, when the distance between the first terminal 100 and the second terminal 300 is greater than a threshold (for example, 2 meters), if the first state indicates that motion is detected and the second state indicates that motion is not detected, The burglar alarm message 1410 is output to the second terminal 300. The burglar alarm message 1410 may be a message transmitted by the first terminal 100 or a message generated by the second terminal 300.

Related to the exemplary embodiment shown in FIGS. 12 to 14, FIG. 15A is a diagram for describing an operation determined based on the first state and the second state. When the distance between the first terminal 100 and the second terminal 300 is greater than a threshold, the first terminal 100 and the second terminal 300 may operate as shown in FIG. 15A.

The first state may indicate that motion of the first terminal 100 is detected, and the first state may indicate that motion of the second terminal 300 is detected. In this case, an alarm message may be displayed at at least one of the two terminals (the first terminal 100 and the second terminal 300). In addition, if the states of the first terminal 100 and the second terminal 300 are equivalent to the state shown in FIG. 13, the first state may indicate that the motion of the first terminal 100 is not detected and the second state may indicate that the first terminal is detected. The movement of the second terminal 300. In this case, the first terminal 100 may switch the operation mode of the first terminal 100 to the standby mode. In addition, if the states of the first terminal 100 and the second terminal 300 are equivalent to the state shown in FIG. 14, the first state may indicate that the motion of the first terminal 100 is detected and the second state may indicate that the first terminal is not detected. The movement of the second terminal 300. In this case, an alert message can be displayed at the second terminal 300. If both the first state and the second state indicate that no motion is detected, the change in the distance between the first terminal 100 and the second terminal 300 without the motion of the first terminal 100 and the second terminal 300 may indicate At least one of a state, a second state, and a distance between the first terminal 100 and the second terminal 300 is erroneous. Therefore, in this case, the first terminal 100 or the second terminal 300 may again determine at least one of the first state, the second state, and the distance between the first terminal 100 and the second terminal 300.

Fig. 15B is a chart for describing an operation decided based on the first state and the second state. If the distance between the first terminal 100 and the second terminal 300 is greater than a threshold, the first terminal 100 and the second terminal 300 can perform operations as shown in FIG. 15B.

If the first terminal 100 is stolen by another person, the distance between the first terminal 100 and the second terminal 300 may be greater than a threshold, and the motion of the first terminal 100 may be detected, and the second terminal 300 may not be detected. exercise. Therefore, in this case, the first terminal 100 can be configured to transmit a loss/stealing notification message to the second terminal 300. The second terminal 300 receiving the lost/stealing notification message may display the received loss/stealing notification message. Further, the first terminal 100 may perform a data protection mode for protecting data stored therein.

When the user moves and the first terminal 100 is left, the distance between the first terminal 100 and the second terminal 300 may be greater than a threshold, and the motion of the first terminal 100 may be detected, and the first terminal 100 may not be detected. The movement of the second terminal 300. Thus, in this case, the first terminal 100 can be configured to transmit a standby mode notification message to indicate that the first terminal 100 is in the standby mode to the second terminal 300. The second terminal 300 receiving the standby mode notification message may display the received standby mode notification message. Further, the first terminal 100 may set a standby mode for reducing power consumption.

In addition, if the first terminal 100 is stolen, the distance between the first terminal 100 and the second terminal 300 may be greater than a threshold, and the motion of the first terminal 100 may be detected, and the second terminal may also be detected. 300 sports. Therefore, in this case, the first terminal 100 can be configured to transmit a loss/stealing notification message to the second terminal 300. The second terminal 300 receiving the lost/stealing notification message may display the received loss/stealing notification message. Further, the first terminal 100 may perform a data protection mode for protecting data stored therein.

If the distance between the first terminal 100 and the second terminal 300 is greater than a threshold, the motion of the first terminal 100 is not detected, and the motion of the second terminal 300 is not detected, the first state, the second state, and At least one of the distances between the first terminal 100 and the second terminal 300 is erroneous. Therefore, in this case, the first terminal 100 or the second terminal 300 may again determine at least one of the first state, the second state, and the distance between the first terminal 100 and the second terminal 300.

FIG. 16 is a flowchart for describing a flow in which the first terminal 100 performs an operation based on the first state and the second state, according to an exemplary embodiment.

The first terminal 100 may determine a first state for indicating the state of the first terminal 100 (operation S1610) and determine a second state for indicating the state of the second terminal 300 (operation S1620). The first state may include information regarding the motion of the first terminal 100. Further, the second state may include information regarding the motion of the second terminal 300. Information about the motion of the terminal may include information about the direction, speed, and mode of motion of the terminal.

Next, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold (operation S1630). If the distance between the first terminal 100 and the second terminal 300 is less than a threshold, the first terminal 100 may update the first state and the second state again (operations S1610 and S1620). If the distance between the first terminal 100 and the second terminal 300 is less than a threshold, the first state and the second state may be periodically updated.

If the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold (operation S1630), the first terminal 100 may determine whether the first terminal 100 is moving based on the first state (operation S1640).

In a state in which the motion of the first terminal 100 is being detected, the first terminal 100 may decide whether the second terminal 300 is moving based on the second state (operation S1650). If the second state indicates that the motion of the second terminal 300 is detected, the first terminal 100 may display an alarm message (operation S1660). Further, the first terminal 100 may transmit an alarm message to the second terminal 300 (operation S1665). However, if the second state indicates that the motion of the second terminal 300 is not detected, the first terminal 100 may transmit only the alert message to the second terminal 300 (operation S1670).

In a state in which the motion of the first terminal 100 is being detected, the first terminal 100 may decide whether the second terminal 300 is moving based on the second state (operation S1655). If the second state indicates that the motion of the second terminal 300 is being detected, the first terminal 100 may switch the operation mode of the first terminal 100 to the standby mode (operation S1680). However, if the second state indicates that the motion of the second terminal 300 is not detected, the first terminal 100 may perform the flow from operation S1610.

According to an exemplary embodiment, the detecting of the motion of the first terminal 100 or the second terminal 300 in operations S1640, S1650, and S1655 may mean detecting the user holding the first terminal 100 or the second terminal 300. Specify the sport. For example, if the first state (based on the first sensor information decision) includes information about the direction, speed, and mode of motion of the first terminal 100, the user corresponding to the user holding the first terminal 100 is walking. In the direction, speed and mode of the situation, the first terminal 100 may decide to detect the motion of the first terminal 100 in operation S1640. Similarly, in operations S1650 and S1655, if the information included in the second state indicates the designated motion of the user holding the second terminal 300, the first terminal 100 may decide to detect the motion of the second terminal 300.

FIG. 17 is a flowchart for describing a flow in which the first terminal 100 performs an operation based on a wearing state of the second terminal 300, according to another exemplary embodiment.

First, the first terminal 100 can establish communication with the second terminal 300 (operation S1710). Next, the first terminal 100 may determine the second state based on the second sensor information or information regarding the second state received from the second terminal 300 (operation S1720).

Next, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold (operation S1730). According to an exemplary embodiment, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 greater than the threshold is maintained for a set period of time. If the distance between the first terminal 100 and the second terminal 300 is less than a threshold, the first terminal 100 may update the second state by performing operation S1720 again. If the distance between the first terminal 100 and the second terminal 300 is neither equal to nor greater than the threshold, the first terminal 100 may update the second state by performing operation S1720 after a specified period of time elapses.

If the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold, the first terminal 100 may determine whether the second state indicates that the user is wearing the second terminal 300 based on the second state. If the second state indicates that the user is wearing the second terminal 300, the first terminal 100 can update the second state by performing operation S1720 again. The first terminal 100 may periodically update the second state by performing the operation S1720 again after the specified time period has elapsed. Alternatively, if the second state indicates that the user does not wear the second terminal 300, the first terminal 100 may terminate communication with the second terminal 300 (operation S1750).

FIG. 18 is a flowchart for describing a flow of performing an operation based on feedback information regarding an operation performed by the first terminal 100, according to an exemplary embodiment.

The first terminal 100 may receive feedback information regarding an operation performed by the first terminal 100 in operation S530 of FIG. 5 (operation S1810). The first terminal 100 can receive feedback information in various manners in accordance with various exemplary embodiments. The first terminal 100 can receive the feedback information by using at least one method including receiving a direct response from the user, receiving an indirect response from the user, and identifying the surrounding environment.

The method of receiving a direct response from a user can include receiving, from a user, a method for selecting an input of at least one of a plurality of menus included in a user interface. Alternatively, the first terminal 100 may receive a voice command of the user via the microphone 162. Further, the first terminal 100 may receive a gesture command of a user as a feedback input via an acceleration sensor, a gyro sensor, or a camera 150.

The method of receiving an indirect response from the user may include obtaining feedback information based on the biometric signal by using a sensor included in the first terminal 100. For example, after the first terminal 100 or the second terminal 300 outputs the alarm message, the biometric signal including at least one of heart rate, blood pressure, muscle movement, and brain wave can be detected by using a heart rate sensor, blood pressure sensing At least one of a device, a muscle sensor, and a brain wave sensor is obtained.

In a method of identifying the surrounding environment, as a non-limiting example, environmental noise may be identified by using a microphone 162, which may be identified by using a brightness sensor of the sensor 110, or with respect to the first terminal 100 Information about the location can be obtained by using the GPS device 140.

Next, the first terminal 100 may perform an operation determined based on the obtained feedback information (operation S1820). If the first terminal 100 or the second terminal 300 outputs an alarm message in operation S530, the operation determined based on the feedback information according to the exemplary embodiment may be for outputting an additional alarm message to the first terminal 100 or the second terminal 300. operating. In this case, the first terminal 100 may output an additional alert message based on the feedback information obtained in operation S1810.

For example, if the biometric signal obtained in operation S1810 changes, the first terminal 100 may determine that the user is nervous and may reduce the vibration intensity or volume for outputting an additional alarm message. In another example, if an alarm message is output to the second terminal 300, the additional alarm message may be output to the terminal other than the second terminal 300 based on the menu of the user's input or voice received in the selection operation S1810. In other words, if an alarm message is output to the wearable device, the alarm message can be output using the speaker or display set in the vehicle. For example, even if the second terminal 300 outputs an alarm message regarding the loss of the first terminal 100 when the user loses the first terminal 100, the user may not view the alarm message. Next, if the user enters the vehicle, short-range wireless communication can be established between the second terminal 300 and the vehicle, and an alarm message regarding the loss can be additionally output via the speaker of the vehicle. However, one or more exemplary embodiments are not limited thereto.

Further, the first terminal 100 may change a time period for outputting an additional alert message based on the feedback information. In addition, the first terminal 100 can change the form or content of the additional alert message. For example, if the alert message is a theft notification message, the additional alert message may be a message indicating information about the location of the first terminal 100 or the second terminal 300. In another example, the feedback information can include information about environmental noise. If the level of the ambient noise is high, the volume of the alarm message can be increased (in the case where the alarm message is output as a sound), the vibration intensity can be increased (in the case where the alarm message is output as a vibration), or can be short-lived The alarm message is output multiple times at intervals. However, one or more exemplary embodiments are not limited thereto.

FIG. 19 is a flowchart showing a flow of the first terminal 100 performing advanced synchronization, according to an exemplary embodiment.

First, the first terminal 100 may determine whether the user is holding the first terminal 100 (operation S1910). According to various exemplary embodiments, various methods may be used to determine whether the user is holding the first terminal 100. FIG. 20 is a schematic diagram showing display of the first terminal 100 performing advanced synchronization according to the exemplary embodiment shown in FIG. Referring to FIG. 20, the first terminal 100 may include a camera 2010 disposed on the same surface as the display 2000. If the user holds the first terminal 100 such that the display 2000 faces the front of the user, the first terminal 100 can capture the front side of the user by using the camera 2010. If the image captured by the camera 2010 includes the front side of the user, the first terminal 100 can determine whether the user is holding the first terminal 100. The first terminal 100 can perform image recognition regarding the captured image. Alternatively, the first terminal 100 may include a touch sensor 2020. If the user touches the touch sensor 2020 by holding the first terminal 100, the first terminal 100 can receive the touch input via the touch sensor 2020. The first terminal 100 can determine whether the user is holding the first terminal 100 based on the received touch input.

If it is determined that the user is holding the first terminal 100 (operation S1920-Y), the first terminal 100 may update the first state and the second state (operation S1930). The first terminal 100 can receive the second sensor information from the second terminal 300 as shown in FIG. 6, and receive information about the second state from the second terminal 300 as shown in FIG. 7, or from the cloud server as shown in FIG. The device 800 receives information about the first state and the second state. However, one or more exemplary embodiments are not limited thereto.

The user can continue to update the first state and the second state when determining that the user is holding the first terminal 100 (S1930-S1950).

21 is a flow chart showing the flow of performing advanced synchronization, in accordance with another exemplary embodiment.

First, the first terminal 100 can establish short-range wireless communication with the second terminal 300 (operation S2110). Next, the first terminal 100 may determine a distance between the first terminal 100 and the second terminal 300 that are connected to each other via short-range wireless communication (operation S2120). The distance between the first terminal 100 and the second terminal 300 can be determined by using various methods in accordance with various exemplary embodiments. Next, if the determined distance is greater than the threshold (operation S2130-N), the first terminal 100 can monitor the distance between the first terminal 100 and the second terminal 300 by periodically performing operation S2120.

If the distance determined in operation S2120 is less than or equal to the threshold (operation S2130-Y), the first terminal 100 may update the first state and the second state (operation S2140). For example, referring to FIG. 22, if the user 2200 who is wearing the second terminal 300 (which is a wearable device) approaches the first terminal 100 and holds the first terminal 100, the first terminal 100 and the second terminal 300 are mutually near. In this case, the first terminal 100 may update the first state and the second state for advanced synchronization. In operation S2140, the first terminal 100 may update the first state and the second state via at least one of the flows illustrated in FIGS. 6 through 8. In other words, the first terminal 100 can obtain information about the first state and information about the second state, and determine the first state and the second state based on the obtained information. After the specified time period after the operation S2140 elapses, the first terminal 100 may again determine the distance between the first terminal 100 and the second terminal 300. If the determined distance is less than or equal to the threshold (operation S2150-Y), the first terminal 100 may perform operation S2140, thereby periodically updating the first state and the second when the first terminal 100 and the second terminal 300 are close to each other. status. However, if the determined distance is greater than the threshold (operation S2150-N), the first terminal 100 may terminate short-range wireless communication with the second terminal 300 (operation S2160).

In order to prevent termination of short-range wireless communication when the user temporarily drops the first terminal 100, the threshold of operation S2130 may be different from the threshold of operation S2150. In other words, the threshold of operation S2150 may be greater than the threshold of operation S2130. For example, in operation S2130, the threshold may be about 50 cm to identify the state in which the user holds both the first terminal 100 and the second terminal 300. Further, in operation S2150, when the user wearing the second terminal 300 approaches the first terminal 100, the threshold may be about 10 meters to maintain short-range wireless communication.

FIG. 23 is a flowchart showing a flow of displaying a notification message on the second terminal 300, according to an exemplary embodiment. According to an exemplary embodiment, if the first terminal 100 is stolen by another person, the notification message may be displayed at the second terminal 300 to prevent the important information of the user from being exposed to the other terminal 100. Further, FIGS. 24 to 26 are diagrams for describing an example of displaying a notification message at the second terminal, according to the exemplary embodiment shown in FIG.

Referring to FIG. 23, the first terminal 100 may establish short-range wireless communication with the second terminal 300 in operation S2310. Next, based on the short-range wireless communication established in operation S2310, the first terminal 100 may determine the first state, the second state, and the distance between the first terminal 100 and the second terminal 300 (operation S2320).

Next, in operation S2330, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold. The first terminal 100 may determine whether the first terminal 100 is stolen based on the first state and the second state in operation S2330. For example, due to the conditions shown in Figure 14, the second state may indicate that the user has not moved, while the first state may indicate that the user is walking. In this case, if the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold, the first terminal 100 may determine that the first terminal 100 is stolen. If the distance between the first terminal 100 and the second terminal 300 is less than or equal to a threshold, the first terminal 100 may perform operation S2320 again.

24 shows an illustrative embodiment in the case where the first terminal 100 is a mobile phone and the second terminal 300 is a wearable device that can be worn on the wrist of the user 2410. If the first terminal 100 is stolen by another person 2420, the distance 2400 between the first terminal 100 and the second terminal 300 increases. In addition, if the other person 2420 moves while holding the first terminal 100, the motion obtainable via the first terminal 100 can display the motion pattern detected when the individual holds the first terminal 100 moving. If the distance 2400 is greater than or equal to the preset threshold and the first state and the second state indicate that the first terminal 100 and the second terminal 300 are moving in different directions or the first terminal 100 is moving and the second terminal 300 is not moving, then A terminal 100 may be stolen by another person 2420.

In operation S2330, if the distance 2400 is greater than or equal to the threshold (or the first terminal 100 is determined to be stolen), the first terminal 100 may decide whether an input designated as an input corresponding to the primary function is received (operation S2340). If the designated input is received (S2340-Y), the first terminal 100 may transmit the notification message to the second terminal 300 (S2350). The notification message may include information about the input received by the first terminal 100. For example, if the received input is an input for capturing the picture data, the first terminal 100 may transmit the message “The attempt to capture the picture at the first terminal” to the second terminal 300. The user can identify an attempt to retrieve personal information based on the message displayed at the second terminal 300.

The above specified input regarding operation S2340 may vary in accordance with various exemplary embodiments. For example, referring to FIG. 25, the other person 2420 can input the touch mode 2500 to the first terminal 100 stolen by another person 2420 to unlock the lock screen. If the first terminal 100 is determined to be stolen based on the first state, the second state, and the distance between the first terminal 100 and the second terminal 300, the first terminal 100 may input the message 2510 (eg, "error mode input to the mobile phone" ") is transmitted to the second terminal 300. The user 2410 can recognize that the other person 2420 attempts to unlock the lock screen of the first terminal 100 based on the message 2510 displayed at the second terminal 300.

The method by which the first terminal 100 transmits the message 2510 to the second terminal 300 may vary according to various exemplary embodiments. For example, if short-range wireless communication is available between the first terminal 100 and the second terminal 300, the first terminal 100 can transmit the message 2510 to the second terminal 300 via short-range wireless communication. Alternatively, the first terminal 100 can transmit the message 2510 to the second terminal 300 via a separate network, such as a mobile communication network or the Internet. However, one or more exemplary embodiments are not limited thereto.

Further, referring to FIG. 26, the designated input can be an input for accessing personal information about the user 2410 via the first terminal 100. The personal information about the user 2410 may include images, messages, financial information, and identification information stored in the terminal. However, one or more exemplary embodiments are not limited thereto. As shown in FIG. 26, if the other person 2420 selects an application execution icon (Icon) for executing a financial related application (in the case where the first terminal 100 is determined to be stolen), the first terminal 100 may transmit the message 2610 (for example, "There is an attempt to access personal information" is transmitted to the second terminal 300. The method by which the first terminal 100 transmits the message 2610 to the second terminal 300 may vary according to various exemplary embodiments.

FIG. 27 is a flowchart showing a flow of transmitting a notification message to a second terminal 300 by the first terminal 100, according to an exemplary embodiment. If the operation determined based on the first state, the second state, and the distance between the first terminal 100 and the second terminal 300 is an operation for transmitting a notification message, the first terminal 100 may transmit the notification message to the user currently being positive. The terminal used.

If an operation determined based on the first state, the second state, and the distance between the first terminal 100 and the second terminal 300 in operation S530 (FIG. 5) is an operation for transmitting a notification message, then in operation S2710, A terminal 100 can search for and select a second terminal that the user is currently using. Referring to FIG. 28, the first terminal 100 can select (i.e., search for) the terminal currently being used by the user 2810 from among the terminals 300-1, 300-2, and 300-3. The terminals 300-1, 300-2, and 300-3 include terminals to which the first terminal 100 can communicate directly or indirectly. For example, the terminals 300-1, 300-2, and 300-3 may include terminals connected to the first terminal 100 via short-range wireless communication or terminals connected to a network connected to the first terminal 100. However, one or more exemplary embodiments are not limited thereto. Further, the terminals 300-1, 300-2, and 300-3 may include the second terminal 300.

According to an exemplary embodiment, in operation S2710, the first terminal 100 may transmit a search signal indicating information of the device currently being searched for by the user 2810 to the terminals 300-1, 300-2, and 300-3. When receiving the search signal, the terminal 300-1 currently being used by the user 2810 may transmit a response signal indicating that the user 2810 is currently using the terminal 300-1 to the first terminal 100. Alternatively, according to another exemplary embodiment, in operation S2710, the first terminal 100 may access the terminals 300-1, 300-2, and 300-3 without transmitting a search signal. The first terminal 100 can analyze the terminals 300-1, 300-2, and 300-3 and search for the terminal 300-1 that the user 2810 is using from among the terminals 300-1, 300-2, and 300-3. For example, if a Universal Plug and Play (UPnP) service is specified by the UPnP protocol, and the terminal registered to the UPnP service can be considered to be the terminal currently being used by the user. If the terminal currently being used by the user is not found, the first terminal 100 may search for the shared network accessible by the first terminal 100 and search for the terminal currently used by the user by using the shared network. Alternatively, the first terminal 100 may search for a terminal currently being used by the user by scanning a terminal included in the terminal list database included in the first terminal 100.

Next, the first terminal 100 may transmit the notification message to the terminal selected in operation S2710 (operation S2720). According to an exemplary embodiment, if a response message is not received from the terminal (the notification message is transmitted to the terminal) within a specified time period after transmitting the notification message, the first terminal 100 may select another terminal and retransmit the notification message to The newly selected terminal.

FIG. 29 is a flowchart of the operation of the first terminal 100, according to another exemplary embodiment. In addition, FIGS. 30 to 33 are diagrams showing a method for preventing child loss using the first terminal 100 and the second terminal 300 based on the exemplary embodiment shown in FIG. However, the exemplary embodiments shown in Figures 30 through 33 are only non-limiting examples.

In operation S2910, the first terminal 100 may determine a first state for indicating a state of the first terminal 100. For example, this first state may include the motion of the first terminal 100, the direction in which the first terminal 100 is moving, or the motion mode of the first terminal 100. The first state may correspond to the first sensor information. For example, the first terminal 100 can determine the direction in which the first terminal 100 moves by using the GPS device 140 of the first terminal 100 or the geomagnetic sensor of the sensor 110. In the case of using the GPS device 140, the first terminal 100 can periodically obtain the location of the first terminal 100. Alternatively, the first terminal 100 may obtain the location of the first terminal 100 when an event occurs. An event may refer to an operation or event that occurs with respect to the first terminal 100. For example, if the motion of the first terminal 100 is detected by using the acceleration sensor, the first terminal 100 can obtain the location of the first terminal 100. Next, based on the change in the location of the first terminal 100, the first terminal 100 may determine the direction in which the first terminal 100 moves. Alternatively, in the case of using a geomagnetic sensor, the first terminal 100 may periodically obtain the azimuth of the first terminal 100. Alternatively, the first terminal 100 may obtain the azimuth of the first terminal 100 when an event occurs. The azimuth may be the angle between the baseline of the N pole of the earth's magnetic field and the orientation of the first terminal 100. Next, based on the change in the azimuth of the first terminal 100, the first terminal 100 may determine the direction in which the first terminal 100 moves.

Further, in operation S2920, the second terminal 300 may decide a second state indicating the state of the second terminal 300. For example, the second state may include the motion of the second terminal 300, the direction in which the second terminal 300 moves, or the motion mode of the second terminal 300. The second state may correspond to the second sensor information.

For example, the second terminal 300 can determine the direction in which the second terminal 300 moves by using the GPS device 340 of the second terminal 300 or the geomagnetic sensor of the sensor 310. The method by which the second terminal 300 determines the direction of movement by using the GPS device 340 or the geomagnetic sensor is similar to the above method with reference to the first terminal 100.

In operation S2930, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a threshold. 30 to 33 are diagrams showing an example of a case where the first user 3010 holds the first terminal 100 (which is a mobile phone) and the second user 3030 is wearing the second terminal 300 (which is a wearable device). A chart of an embodiment. The first terminal 100 may determine a distance 3020 between the first terminal 100 and the second terminal 300. The first terminal 100 can determine whether the distance 3020 is less than a threshold value of 3025 (eg, 5 meters). The threshold value 3025 may also be set based on a user input value input to the first terminal 100. If the distance 3020 is smaller than the threshold value 3025 (S2930-N), the first terminal 100 may not perform any specific operation and may perform the operation S2910 again after any period of time has elapsed. In other words, if the second user 3030 is within a critical distance from the first user 3010, the first terminal 100 may not perform any additional operations other than operations for periodically monitoring the first state and the second state.

If the distance 3020 between the first terminal 100 and the second terminal 300 is greater than or equal to the threshold value 3025 (S2930-Y), the first terminal 100 may determine whether the second state indicates that the second terminal 300 is detected in operation S2940. exercise. If the motion of the second terminal 300 is not detected, the second user 3030 does not move (S2940-N), and thus the first terminal 100 may not perform any specific operation and may perform operation S2910 again after any period has elapsed. However, if the second state indicates that the motion of the second terminal 300 is detected (S2940-Y), the first terminal 100 may determine whether the first state indicates that the motion of the first terminal 100 is detected in operation S2950. The detection of the motion of the terminal may mean that the first sensor information or the second sensor information may include information about a mode of terminal movement.

If the motion of the second terminal 300 is detected and the motion of the first terminal 100 is not detected (S2950-N), the first terminal 100 may display a notification message (operation S2960). The notification message may be a message indicating that the first user 3010 is viewing the location of the child 3030. Referring to FIG. 31, when the first user 3010 has not moved and the second user 3030 has moved from the previous position 3100 in the direction 3102, the distance between the two terminals may be greater than or equal to the threshold value 3025. In this case, the second user 3030 can leave the first user 3010 without the first user 3010 being aware of, and the first terminal 100 can output a notification message for preventing the child from being lost.

If the motion of the first terminal 100 is detected in operation S2950, the first terminal 100 may determine whether the first terminal 100 and the second terminal 300 move in the same direction in operation S2955. The expression "moving in the same direction" includes the expression "moving in a similar direction". If the first terminal 100 and the second terminal 300 move in the same direction (S2955-Y), the first terminal 100 may not perform any specific operation and may perform the operation S2910 again after any period has elapsed. Referring to FIG. 32, since the second user 3030 moves from the previous position 3220 in the direction 3222, the distance from the first user 3010 to the second user 3030 is greater than the threshold value 3025. However, if the direction 3212 of the first user 3010 from the initial position 3210 is equal to the direction 3222 in which the second user 3030 moves, the first user 3010 and the second user 3030 move in the same direction, and thus, the first The terminal 100 may not display to prevent the child from losing the message.

If the first terminal 100 and the second terminal 300 do not move in the same direction in operation S2955, the first terminal 100 may display a notification message (operation S2960). Referring to FIG. 33, since the second user 3030 moves from the initial position 3320 in the direction 3322, the distance from the first user 3010 to the second user 3030 is greater than the threshold value 3025. Since the direction 3312 of the first user 3010 moving from the initial position 3310 is different from the direction 3322 of the second user 3030 moving from the initial position 3320, the first terminal 100 should display a notification message to the first user 3010 for preventing the child from being lost. .

FIG. 34 is a flowchart for displaying an operation of the first terminal 100 in accordance with another exemplary embodiment, and FIGS. 35 to 38 are diagrams showing the use of the first based on ambient brightness according to the exemplary embodiment shown in FIG. 34. A diagram of a method for preventing the loss of a child by the terminal 100 and the second terminal 300. When the surrounding environment is bright, even if the child holding the second terminal 300 is away from the parent holding the first terminal 100, the parent can easily locate the child. Therefore, the critical value of the distance between the first terminal 100 and the second terminal 300 may be relatively large during a relatively high brightness period such as daylight. However, when the surrounding environment is dark, even if the distance between the parent holding the first terminal 100 and the child holding the second terminal 300 is relatively small, the parent may still have difficulty in locating the child. Therefore, the critical value of the distance between the first terminal 100 and the second terminal 300 may be relatively small during relatively low brightness periods, such as at night. In this case, the notification message can be output to the parent even if the child is only a relatively small distance from the parent.

In operation S3410, the first terminal 100 may determine a first state for indicating a state of the first terminal 100. In operation S3420, the second terminal 300 may determine a second state for indicating the state of the second terminal 300.

In operation S3430, the first terminal 100 may determine the brightness around the first terminal 100 by using the brightness sensor of the sensor 110. Alternatively or additionally, the second terminal 300 can determine the brightness around the second terminal 300 by using the brightness sensor of the sensor 310.

In operation S3440, the first terminal 100 may determine a threshold value of the distance between the first terminal 100 and the second terminal 300 based on the determined brightness. For example, if the brightness determined by the first terminal 100 is greater than 10 lux, the critical value of the distance between the first terminal 100 and the second terminal 300 may be about 5 meters. Alternatively, if the brightness determined by the first terminal 100 is between 1 lux and 10 lux, the critical value of the distance between the first terminal 100 and the second terminal 300 may be about 4 meters. Alternatively, if the brightness determined by the first terminal 100 is less than or equal to 1 lux, the critical value of the distance between the first terminal 100 and the second terminal 300 may be about 3 meters.

The first terminal 100 may determine a threshold based on at least one of a brightness around the first terminal 100 and a brightness around the second terminal 300. For example, the first terminal 100 may be based on a comparison between an average or median value of the brightness around the first terminal 100 and an average or median value of the brightness around the second terminal 300. A small value determines the critical value. In another example, the second terminal 300 may select a smaller value between an average value or a median value of the brightness around the first terminal 100 and an average or median value of the brightness around the second terminal 300 and will The selected value is supplied to the first terminal 100.

In operation S3450, the first terminal 100 may determine whether the distance between the first terminal 100 and the second terminal 300 is less than or equal to the determined threshold. 35 is a view showing that the determined threshold value is 3 meters, the first user 3510 holds the first terminal 100 (which is a mobile phone) and the second user 3530 is wearing the second terminal 300 (which is wearable) A diagram of an exemplary embodiment of the case of a device). The first terminal 100 may determine a distance 3520 between the first terminal 100 and the second terminal 300. The first terminal 100 may determine whether the distance 3520 between the first terminal 100 and the second terminal 300 is less than or equal to a threshold value of 3525 (eg, 3 meters). If the distance 3520 between the first terminal 100 and the second terminal 300 is less than the threshold 3525 (S3450-N), the first terminal 100 may not perform any specific operation and may perform the operation S3410 again after any period has elapsed.

If the distance 3520 between the first terminal 100 and the second terminal 300 is greater than or equal to the threshold 3525 (S3450-Y), the first terminal 100 may determine whether the second state indicates that the motion of the second terminal 300 is detected. If the motion of the second terminal 300 is not detected (S3460-N), the second user 3530 does not move, and thus the first terminal 100 may not perform any specific operation. Further, the first terminal 100 may perform operation S3410 again after any period of time has elapsed. However, if the motion of the second terminal 300 is detected (S3460-Y), the first terminal 100 may determine whether the first state indicates the motion of the first terminal 100 in operation S3470.

If the motion of the second terminal 300 is detected and the motion of the first terminal 100 is not detected (S3470-N), the first terminal 100 may display a notification message (operation S3480). The notification message may be a message indicating that the first user 3510 is viewing the child's location. Referring to FIG. 36, when the first user 3510 has not moved and the second user 3530 has moved from the previous position 3500 in the direction 3602, the distance between the two terminals may be greater than or equal to the threshold 3525. In this case, the second user 3530 can leave the first user 3510 without the first user 3510 being aware, and the first terminal 100 can output a notification message for preventing the child from being lost.

If the motion of the first terminal 100 is detected in operation S3470, the first terminal 100 may determine whether the first terminal 100 and the second terminal 300 move in the same or similar directions in operation S3475. If the first terminal 100 and the second terminal 300 move in the same or similar directions (S3475-Y), the first terminal 100 may not perform any specific operation and may perform the operation S3410 again after any period has elapsed. Referring to FIG. 37, FIG. 37 shows that since the second user 3530 moves from the previous position 3720 in the direction 3722, the distance from the first user 3510 to the second user 3530 is greater than the threshold 3525. However, if the direction 3712 of the first user 3510 from the initial position 3710 is equal to or similar to the direction 3722 in which the second user 3530 moves, the first user 3510 and the second user 3530 move in the same direction, and thus The first terminal 100 may not display to prevent the child from losing the message.

If the first terminal 100 and the second terminal 300 do not move in the same direction in operation S3475, the first terminal 100 may display a notification message (operation S3480). Referring to FIG. 38, FIG. 38 shows that since the second user 3530 moves from the initial position 3870 in the direction 3822, the distance from the first user 3510 to the second user 3530 is greater than the threshold 3525. Since the direction 3812 in which the first user 3510 moves from the initial position 3810 is different from the direction 3822 in which the second user 3530 moves, the first terminal 100 should display a notification message to the first user 3510 for preventing the child from being lost.

FIG. 39 is a flowchart of displaying a notification message on the second terminal 300 in accordance with another exemplary embodiment. According to an exemplary embodiment, if the user drops the first terminal 100, the notification message may be displayed at the second terminal 300 held or worn by the user. Alternatively, an operation for preparing a case where an impact is applied to the first terminal 100 (for example, an operation for storing backup material of the first terminal 100) may be performed before the user drops the first terminal 100. 40 and 41 are diagrams for describing an example in which the second terminal 300 displays a notification message, according to the exemplary embodiment shown in FIG.

Referring to FIG. 39, the first terminal 100 may establish short-range wireless communication with the second terminal 300 in operation S3910. Next, in operation S3920, the first terminal 100 may determine the distance between the first terminal 100 and the second terminal 300 based on the established short-range wireless communication.

Next, in operation S3930, the first terminal 100 or the second terminal 300 may determine whether the distance between the first terminal 100 and the second terminal 300 is greater than or equal to a first threshold.

If the distance between the first terminal 100 and the second terminal 300 is greater than or equal to the first threshold (S3930-Y), the first terminal 100 or the second terminal 300 may determine the first terminal 100 and the second in operation S3940. Whether the distance between the terminals 300 increases at a speed greater than or equal to the second threshold.

If the distance between the first terminal 100 and the second terminal 300 increases at a speed greater than or equal to the second threshold (S3940-Y), the first terminal 100 may back up the data of the first terminal 100 in operation S3950. For example, the first terminal 100 may store the data (content data or application data) executed on the first terminal 100 and the data input by the user to the first terminal 100 to the storage 170 of the first terminal 100. Alternatively, the first terminal 100 may provide the above information to the second terminal 300 or an external device (for example, a cloud device).

40 shows an illustrative embodiment corresponding to the case where the first terminal 100 is a mobile phone and the second terminal 300 is a wearable device that can be worn on the wrist of the user 4010. In FIG. 40, if the user 4010 drops the first terminal 100, the distance 4020 between the first terminal 100 and the second terminal 300 can be rapidly increased. If the distance 4020 between the first terminal 100 and the second terminal 300 increases at a speed greater than or equal to the second threshold, the first terminal 100 may back up the data of the first terminal 100 to prevent data loss.

In operation S3960, the first terminal 100 or the second terminal 300 may determine at least one of the first state and the second state. Next, in operation S3970, the first terminal 100 or the second terminal 300 may determine whether the first terminal 100 is dropped on the ground based on at least one of the first state and the second state. If it is determined that the first terminal 100 is dropped (S3970-Y), the second terminal 300 may display a notification message indicating that the first terminal 100 is dropped in operation S3970. For example, as shown in FIG. 41, the user 4010 drops the first terminal 100 on the ground, the first state is used to indicate that the first terminal 100 is dropped on the ground and a specific impact amount is applied to the first terminal 100, and The second state is used to indicate whether the user 4010 holding the second terminal 300 is moving. In this case, the first terminal 100 may determine that the user 4010 drops the first terminal 100, and transmits a notification message indicating that the user 4010 drops the first terminal 100 to the second terminal 300. Alternatively, the second terminal 300 may determine that the user 4010 drops the first terminal 100 and displays a notification message indicating that the first terminal 100 is dropped.

One or more exemplary embodiments can be implemented by a computer readable recording medium, such as a program module executed by a computer. The computer readable recording medium can be a non-transitory computer readable recording medium. The computer readable recording medium can be any available media that can be accessed by a computer, and examples thereof include all volatile media (eg, RAM) and non-volatile media (eg, ROM) and detachable and non-separable media. Furthermore, examples of computer readable recording media may include computer storage media and communication media. Examples of computer storage media include all volatile and non-volatile media and detachable and non-separable media, which have been implemented by any method or technology for storing information such as computer readable commands, data structures, program modules and other materials. . The communication medium usually includes computer readable commands, data structures, program modules, other materials of the modulated data signals, or another transmission mechanism, and examples thereof include any information transmission medium. For example, the computer readable recording medium can be ROM, RAM, flash memory, CD, DVD, disk or tape.

Although one or more exemplary embodiments have been shown and described, it is understood by those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the inventive concept defined by the following claims and their equivalents Various changes are made in form and detail. Therefore, it is to be understood that the above-described exemplary embodiments are not limited to the scope of the inventive concept. For example, each component described as a single unit can be executed in a distributed fashion, and the components described as being distributed can be implemented in an integrated fashion.

The scope of the inventive concept is indicated by the scope of the claims and the equivalents thereof, which are described below, and the equivalents of certain exemplary embodiments, and the scope of the claims and the scope of the claims and their equivalents All modifications or variations of the concept acquired are included in the scope of the inventive concept.

100‧‧‧ first terminal
110‧‧‧ Sensor
120‧‧‧ communicator
121‧‧‧Mobile Communicator
122‧‧‧Sub Communicator
122-1‧‧‧Wireless LAN Module
122-2‧‧‧Short-range wireless communicator
123‧‧‧Multimedia module
123-1‧‧‧Broadcast Communicator
123-2‧‧‧Audio playback module
123-3‧‧‧Action Picture Playback Module
130‧‧‧ Controller
131‧‧‧Central Processing Unit
132‧‧‧Read-only memory
133‧‧‧ random access memory
140‧‧‧GPS device
150‧‧‧ camera
160‧‧‧Input/Output Interface
161‧‧‧ button
162‧‧‧ microphone
163‧‧‧Speaker
164‧‧‧Vibration motor
165‧‧‧Connector
166‧‧‧Keypad
170‧‧‧Storage
180‧‧‧Power supply
190‧‧‧ display
300‧‧‧second terminal
300-1‧‧‧ Terminal
300-2‧‧‧ Terminal
300-3‧‧‧ Terminal
310‧‧‧Sensor
320‧‧‧Communicator
321‧‧‧Mobile Communicator
322‧‧‧Subcommunicator
322-1‧‧‧Wireless LAN Module
322-2‧‧‧Short-range wireless communicator
323‧‧‧Multimedia Module
323-1‧‧‧Broadcast Communicator
323-2‧‧‧ audio playback module
323-3‧‧‧Mobile Picture Playback Module
330‧‧‧ Controller
331‧‧‧Central Processing Unit
332‧‧‧Reading memory
333‧‧‧ random access memory
340‧‧‧GPS device
350‧‧‧ camera
360‧‧‧Input/Output Interface
361‧‧‧ button
362‧‧‧Microphone
363‧‧‧Speaker
364‧‧‧Vibration motor
365‧‧‧Connector
366‧‧‧Keypad
370‧‧‧Storage
380‧‧‧Power supply
800‧‧‧Cloud Server
1100‧‧‧Cloud Server
1200‧‧‧ distance
1300‧‧‧ initial position
1400‧‧‧ initial position
1410‧‧‧ burglar alarm message
2000‧‧‧ display
2010‧‧‧ camera
2020‧‧‧Touch sensor
2200‧‧‧Users
2400‧‧‧ distance
2410‧‧‧Users
2420‧‧‧ others
2500‧‧‧ Touch mode
2510‧‧‧Information
2610‧‧‧Information
2810‧‧‧Users
3010‧‧‧ first user
3020‧‧‧distance
3025‧‧‧ threshold
3030‧‧‧ second user
3100‧‧‧Previous location
3102‧‧ Direction
3210‧‧‧ initial position
3212‧‧ Direction
3220‧‧‧Previous location
3222‧‧‧ Direction
3310‧‧‧ initial position
Direction of 3312‧‧‧
3320‧‧‧ initial position
3322‧‧‧ Direction
3500‧‧‧Previous location
3510‧‧‧ first user
3520‧‧‧distance
3525‧‧‧critical value
3530‧‧‧ second user
3602‧‧ Direction
3710‧‧‧Initial position
3712‧‧ Direction
3720‧‧‧Previous location
3722‧‧‧ Direction
3810‧‧‧ initial position
3812‧‧ Direction
3822‧‧‧ Direction
4010‧‧‧Users
4020‧‧‧distance
S510‧‧‧ operation
S520‧‧‧ operation
S600‧‧‧ operation
S610‧‧‧ operation
S615‧‧‧ operation
S620‧‧‧ operation
S630‧‧‧ operation
S640‧‧‧ operation
S650‧‧‧ operation
S660‧‧‧ operation
S700‧‧‧ operation
S710‧‧‧ operation
S715‧‧‧ operation
S720‧‧‧ operation
S725‧‧‧ operation
S730‧‧‧ operation
S740‧‧‧ operation
S750‧‧‧ operation
S810‧‧‧ operation
S815‧‧‧ operation
S820‧‧‧ operation
S830‧‧‧ operation
S840‧‧‧ operation
S850‧‧‧ operation
S860‧‧‧ operation
S870‧‧‧ operation
S880‧‧‧ operation
S1610‧‧‧ operation
S1620‧‧‧ operation
S1630‧‧‧ operation
S1640‧‧‧ operation
S1650‧‧‧ operation
S1655‧‧‧ operation
S1660‧‧‧ operation
S1665‧‧‧ operation
S1670‧‧‧ operation
S1680‧‧‧ operation
S1710‧‧‧ operation
S1720‧‧‧ operation
S1730‧‧‧ operation
S1750‧‧‧ operation
S1810‧‧‧ operation
S1820‧‧‧ operation
S1910‧‧‧ operation
S1920‧‧‧ operation
S1930‧‧‧ operation
S1940‧‧‧ operation
S1950‧‧‧ operation
S2110‧‧‧ operation
S2120‧‧‧ operation
S2130‧‧‧ operation
S2140‧‧‧ operation
S2150‧‧‧ operation
S2160‧‧‧ operation
S2310‧‧‧ operation
S2320‧‧‧ operation
S2330‧‧‧ operation
S2340‧‧‧ operation
S2350‧‧‧ operation
S2710‧‧‧ operation
S2720‧‧‧ operation
S2910‧‧‧ operation
S2920‧‧‧ operation
S2930‧‧‧ operation
S2940‧‧‧ operation
S2950‧‧‧ operation
S2955‧‧‧ operation
S2960‧‧‧ operation
S3410‧‧‧ operation
S3420‧‧‧ operation
S3430‧‧‧ operation
S3440‧‧‧ operation
S3450‧‧‧ operation
S3460‧‧‧ operation
S3470‧‧‧ operation
S3475‧‧‧ operation
S3480‧‧‧ operation
S3910‧‧‧ operation
S3920‧‧‧ operation
S3930‧‧‧ operation
S3940‧‧‧ operation
S3950‧‧‧ operation
S3960‧‧‧ operation
S3970‧‧‧ operation

The following description of certain exemplary embodiments of the present invention will be apparent from the Block diagram. 2 is a block diagram of a first terminal, in accordance with an exemplary embodiment. FIG. 3 is a block diagram of a second terminal, in accordance with an exemplary embodiment. 4 is a block diagram of a second terminal, in accordance with an exemplary embodiment. FIG. 5 is a flowchart showing a flow of controlling a first terminal, according to an exemplary embodiment. FIG. 6 is a sequence diagram showing operations of a first terminal and a second terminal, according to an exemplary embodiment. FIG. 7 is a sequence diagram showing operations of a first terminal and a second terminal, according to another exemplary embodiment. FIG. 8 is a sequence diagram showing operations of a first terminal and a second terminal, according to another exemplary embodiment. FIG. 9 is a diagram for describing a method in which a first terminal and a second terminal communicate with each other, according to an exemplary embodiment. FIG. 10 is a diagram for describing a method in which a first terminal and a second terminal communicate with each other, according to another exemplary embodiment. 11 is a diagram for describing a method in which a first terminal and a second terminal communicate with each other, according to another embodiment. 12 through 14 are diagrams for describing operations of a first terminal and a second terminal, according to an exemplary embodiment. 15A and 15B are diagrams for describing an operation determined based on a first state and a second state. FIG. 16 is a flowchart for describing a flow of a first terminal performing an operation based on a first state and a second state, according to an exemplary embodiment. FIG. 17 is a flowchart for describing a flow of an operation performed by a first terminal, according to another exemplary embodiment. FIG. 18 is a flowchart for describing an operational flow of performing a decision based on feedback information regarding an operation performed by a first terminal, according to an exemplary embodiment. FIG. 19 is a flowchart showing a first terminal performing an Advanced Synchronization flow, according to an exemplary embodiment. FIG. 20 is a schematic diagram showing a first terminal performing advanced synchronization, in accordance with an exemplary embodiment. 21 is a flow chart showing a flow of performing advanced synchronization, according to another exemplary embodiment. FIG. 22 is a diagram for describing execution of advanced synchronization, in accordance with an exemplary embodiment. 23 is a flow chart showing a flow of displaying a notification message on a second terminal, in accordance with an exemplary embodiment. 24 through 26 are diagrams for describing an example of displaying a notification message on a second terminal, in accordance with various exemplary embodiments. FIG. 27 is a flowchart showing a flow of transmitting a notification message to a second terminal by a first terminal, according to an exemplary embodiment. FIG. 28 is a diagram for describing an example of a first terminal transmission notification message, according to an exemplary embodiment. 29 is a flow diagram of operation of a first terminal, in accordance with another exemplary embodiment. 30-33 are diagrams showing a method of using a first terminal and a second terminal for preventing child prevention, in accordance with various exemplary embodiments. Figure 34 is a flow diagram of the operation of the first terminal, in accordance with another exemplary embodiment. 35-38 are diagrams showing a method of preventing a child from losing using a first terminal and a second terminal, in accordance with various exemplary embodiments. FIG. 39 is a flowchart showing displaying a notification message on a second terminal, according to another exemplary embodiment. 40 and 41 are diagrams for describing an example of a second terminal displaying a notification message, in accordance with various exemplary embodiments.

100‧‧‧ first terminal

110‧‧‧ Sensor

120‧‧‧ communicator

130‧‧‧ Controller

Claims (15)

a first terminal configured to operate with a second terminal, the first terminal comprising: a sensor configured to obtain information corresponding to motion of the first terminal a communicator configured to receive information corresponding to motion of the second terminal from the second terminal; and a controller configured to respond to the first terminal and the second terminal a distance between greater than or equal to a threshold to control the communicator based on the information corresponding to the motion of the first terminal and the information corresponding to the motion of the second terminal, Transmitting a notification message to the second terminal. The first terminal of claim 1, wherein the controller is further configured to respond to the movement to indicate the movement of the first terminal that the first terminal is moving And the information and the information indicating the movement of the second terminal that the second terminal does not move, and controlling the communicator to transmit the notification message to the second terminal. The first terminal of claim 1, wherein the communicator is further configured to perform a short-range wireless communication with the second terminal, and the controller is further configured to be based on The strength of a signal detected by the first terminal for the short-range wireless communication determines the distance between the first terminal and the second terminal. The first terminal of claim 3, wherein the communicator is further configured to receive the distance from the second terminal corresponding to the first terminal and the second terminal And the controller is further configured to correct the intensity of the detected signal by correcting the distance corresponding to the distance between the first terminal and the second terminal The received information determines the distance between the first terminal and the second terminal. The first terminal of claim 1, wherein the controller is further configured to respond to the movement to indicate the movement of the first terminal that the first terminal is not moving. And the information and the information indicating the movement of the second terminal that the second terminal is moving, switching an operation mode of the first terminal to an inactive mode. The first terminal of claim 1, wherein the controller is further configured to respond to the distance being greater than or equal to the threshold and the first terminal receives a specified input, the control station The communicator transmits the notification message to the second terminal. a first terminal configured to operate with a second terminal, the first terminal comprising: a sensor configured to obtain information corresponding to motion of the first terminal; a communicator, Configuring to receive information corresponding to motion of the second terminal from the second terminal; a display configured to display a screen image; and a controller configured to respond to the first Controlling, by the terminal, a distance from the second terminal that is greater than or equal to a threshold to control the display based on the information corresponding to the motion of the first terminal and the motion corresponding to the second terminal The information displays a notification message. The first terminal of claim 7, wherein the controller is further configured to respond to the information indicating the motion of the second terminal that the second terminal is moving. And the information indicating the movement of the first terminal that the first terminal does not move, and controlling the display to display the notification message. The first terminal of claim 7, wherein the controller is further configured to compare the first terminal indicated by the information corresponding to the motion of the first terminal Controlling the display of the notification message by a direction of movement and a result of a direction of movement of the second terminal indicated by the information corresponding to the motion of the second terminal. a second terminal configured to operate with a first terminal, the second terminal comprising: a sensor configured to obtain information corresponding to motion of the second terminal; a communicator, Configuring to transmit the information corresponding to the motion of the second terminal to the first terminal and receive information corresponding to an operation from the first terminal, the operation being based on corresponding to Determining the information of the motion of the second terminal; and a controller configured to perform an operation determined based on the received information. A control method for controlling a first terminal capable of operating with a second terminal, the method comprising: obtaining information corresponding to motion of the first terminal; receiving from the second terminal corresponding to the Information about the motion of the second terminal; and in response to the distance between the first terminal and the second terminal being greater than or equal to a threshold, based on the information corresponding to the motion of the first terminal And transmitting, by the information corresponding to the motion of the second terminal, a notification message to the second terminal. The method of claim 11, wherein the transmitting comprises responding to the information indicating the movement of the first terminal that the first terminal is moving and indicating The information of the motion of the second terminal that is not moved by the terminal transmits the notification message to the second terminal. A control method for controlling a first terminal capable of operating with a second terminal, the method comprising: obtaining information corresponding to motion of the first terminal; receiving from the second terminal corresponding to the Information about the motion of the second terminal; and in response to the distance between the first terminal and the second terminal being greater than or equal to a threshold, based on the information corresponding to the motion of the first terminal and And outputting a notification message corresponding to the information of the motion of the second terminal. The method of claim 13, wherein the output comprises the information in response to the movement of the second terminal to indicate that the second terminal is moving and to indicate the The information of the motion of the first terminal that is not moved by a terminal displays the notification message. A control method for controlling a second terminal capable of operating with a first terminal, the method comprising: obtaining information corresponding to motion of the second terminal; Transmitting the information of the motion to the first terminal; receiving information corresponding to an operation from the first terminal, the operation being determined based on the information corresponding to the motion of the second terminal And performing the operation based on the received information.