JP2016177147A - Portable terminal, light emission control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly control operation of a light emission unit which illuminates a display screen on a portable terminal to be attached to a user.SOLUTION: A portable terminal 1 to be attached to an attachment site of a user includes: a display screen 12; a light emission unit 13 that illuminates the display screen 12; a detection sensor 14 that detects an operating state of the attachment site or a posture of the portable terminal 1; and a switching unit 164 that switches light emission intensity of the light emission unit 13 on the basis of a detection result of the detection sensor 14.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a portable terminal, a light emission control method, and a program.

  In a portable terminal having a liquid crystal display, the brightness of the display is adjusted by a backlight. For example, in the mobile phone of Patent Document 1, when the display surface of the LCD display unit is placed downward (when the user does not look at the display screen), the backlight is controlled to be turned off.

JP 2006-101331 A

In recent years, a wearable terminal that is worn on a user's arm or the like as a portable terminal has been proposed. The user moves the arm on which the wearable terminal is worn to confirm information displayed on the display screen or perform an input operation.
Although it is desirable to control the operation of the backlight even in the above-mentioned wearable terminal, a conventional control method for turning off the backlight when the display surface is facing down is used for an arm that is expected to have complicated movements. If it is applied as it is to the attached device type terminal, the backlight is turned off only when the display surface is temporarily turned downward. In the conventional method, since the user needs to turn on the backlight to turn on the backlight, the user needs to turn on the backlight frequently when viewing the display screen. It was complicated.

  Therefore, the present invention has been made in view of these points, and an object thereof is to appropriately control the operation of a light emitting unit that illuminates a display screen in a mobile terminal worn by a user.

  In the first aspect of the present invention, the mobile terminal is mounted on a user's mounting site, and includes a display screen, a light emitting unit that illuminates the display screen, an operating state of the mounting site, or an attitude of the mobile terminal. Provided is a portable terminal comprising: a detection unit that detects; and a control unit that switches a light emission intensity of the light-emitting unit based on a detection result of the detection unit.

  Further, the control unit is configured to set a lower limit side first emission intensity of the predetermined range of emission intensity and an upper limit side emission intensity of the predetermined range based on the detection result of the detection unit. The second emission intensity may be switched.

  The wearing site is a user's arm, and the control unit calculates the first emission intensity and the second emission intensity based on the position, orientation, and movement of the arm detected by the detection unit. It is good also as switching.

  In addition, the mobile terminal further includes a power supply unit, and the control unit displays the detection result of the detection unit when a touch operation is performed on the display screen when the remaining amount of the power supply unit is a predetermined amount or less. The light emitting unit may emit light without switching the light emission intensity based on the light emission.

  The portable terminal further includes a storage unit that stores movement information related to a predetermined movement of the arm, and the control unit stores the movement of the arm detected by the detection unit in the storage unit. When the movement information indicates the same or similar movement, the light emission intensity of the light emitting unit may be switched.

  In addition, the mobile terminal further includes a detection unit that detects whether or not the mobile terminal is worn by the user, and when the control unit detects that the mobile terminal is not worn by the user, The light emitting unit may be turned off.

  The portable terminal further includes a storage unit that stores a schedule for managing a user's schedule, and the control unit switches between the first emission intensity and the second emission intensity based on the schedule. It is good.

  The portable terminal further includes a communication unit that communicates with the communication terminal, and the control unit receives the message from the communication terminal or receives a call from the communication terminal, and performs the second operation for a predetermined time. The light emitting unit may be turned off after the light emission intensity is set.

  In addition, the mobile terminal further includes a detection unit that detects whether or not the mobile terminal is worn by the user, and when the control unit detects that the mobile terminal is not worn by the user, Even when the message is received from the communication terminal or the incoming call is received, the operation of turning off the light emitting unit may be stopped after the second light emission intensity is set for a predetermined time.

  The portable terminal further includes a communication unit that communicates with a communication terminal having a second light emitting unit that illuminates the second display screen, and the control unit has the second light emitting unit corresponding to the second light emission intensity. When the communication unit receives light emission information emitted with light emission intensity from the communication terminal, the information may be switched to the second light emission intensity.

  The portable terminal further includes a communication unit that communicates with a communication terminal having a second light emitting unit that illuminates the second display screen, and the control unit has the second light emitting unit corresponding to the second light emission intensity. When the communication unit receives light emission information emitted with light emission intensity from the communication terminal, the communication unit switches to the first light emission intensity, and after switching to the first light emission intensity, based on the detection result of the detection unit It may be switched to the second emission intensity.

  The portable terminal may further include a luminance detection unit that detects ambient environmental luminance, and the control unit may switch the light emission intensity of the light emitting unit according to the environmental luminance detected by the luminance detection unit. Good.

  Moreover, the said control part is good also as switching the light emission intensity | strength of the said light emission part based on the detection result of the said detection part, when the said display screen is a screen which shows the screen which shows time, or message reception.

  In the second aspect of the present invention, the step of detecting the operating state of the wearing part of the user wearing the portable terminal or the posture of the portable terminal, and the light emission that illuminates the display screen of the portable terminal based on the detection result And a step of switching the light emission intensity of the unit.

  In the third aspect of the present invention, the step of detecting the operating state of the wearing part or the posture of the portable terminal of the user wearing the portable terminal on the computer of the portable terminal, and the portable device based on the detection result. And a step of switching the light emission intensity of the light emitting unit that illuminates the display screen of the terminal.

  Advantageous Effects of Invention According to the present invention, it is possible to appropriately control the operation of a light emitting unit that illuminates a display screen in a mobile terminal worn by a user.

It is the schematic which shows an example of a structure of the communication system S which concerns on the 1st Embodiment of this invention. It is a figure which shows the example of a display of the display screen 12 of the portable terminal 1. FIG. It is a figure which shows an example of the mode selection screen of the communication terminal. It is a figure which shows an example of the brightness of the display screen 12 according to the emitted light intensity of a light emission part. 2 is a block diagram illustrating an example of a functional configuration of a mobile terminal 1. FIG. It is a figure which shows the state which the child is moving the arm with which the portable terminal 1 was mounted | worn. It is a figure for demonstrating the lighting state of the light emission part. 4 is a flowchart for explaining an example of switching processing of light emission intensity of the light emitting unit 13; It is a flowchart which shows the operation example of the portable terminal 1 which concerns on 2nd Embodiment. It is a block diagram which shows an example of a function structure of the portable terminal 1 which concerns on 3rd Embodiment.

<First Embodiment>
[Outline of communication system]
An overview of a communication system according to the first embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a schematic diagram illustrating an example of a configuration of a communication system S according to the first embodiment. As shown in FIG. 1, the communication system S includes a mobile terminal 1 and a communication terminal 2 that can communicate with the mobile terminal 1 via a mobile phone network N that is a communication network.

  The mobile terminal 1 is a wearable terminal used by children. Specifically, the mobile terminal 1 is a wristwatch type terminal that is worn on a child's arm (specifically, a wrist). The mobile terminal 1 includes a display screen 12 and a belt 18 for fixing the mobile terminal 1 to the wrist. On the display screen 12, a touch panel on which a child can perform a touch operation with a finger is superimposed. The mobile terminal 1 has a light emitting unit that illuminates the display screen 12. The brightness (luminance) of the display screen 12 is adjusted according to the light emission intensity of the light emitting unit.

  The child views the display screen 12 or performs an input operation via the touch panel while appropriately rotating or vertically moving the arm on which the portable terminal 1 is attached to the wrist. The mobile terminal 1 has the function of a mobile phone by itself, and a child can make a call or send / receive mail using the mobile terminal 1.

FIG. 2 is a diagram illustrating a display example of the display screen 12 of the mobile terminal 1. FIG. 2A shows a state in which a clock is displayed on the display screen 12. If the child who is a user touches the display screen 12, it will change to the menu screen shown in FIG.2 (b). The child can select an item to be processed from among a plurality of items displayed on the menu screen.
For example, the mobile terminal 1 switches to a screen (FIG. 2 (c)) for making a call when the child selects a telephone on the menu screen, and a screen for starting a time-related function such as a timer (when the watch is selected). Switch to FIG. The mobile terminal 1 switches to a screen for sending a message (FIG. 2 (e)) when the child selects mail on the menu screen, and displays a history of operation when a history is selected (FIG. 2 (f)). ).

  Returning to FIG. 1, the communication terminal 2 is a terminal used by a parent of a child who is a user of the mobile terminal 1. The communication terminal 2 is an arbitrary terminal having a communication function, such as a smartphone, a mobile phone, and a computer, and transmits / receives information to / from the mobile terminal 1 via the mobile phone network N. In the communication terminal 2, a mode in which a parent executes an operation in cooperation with the mobile terminal 1 can be selected.

FIG. 3 is a diagram illustrating an example of the mode selection screen of the communication terminal 2. In the mode selection screen shown in FIG. 3, it is possible to select the watching mode or the outing mode.
The watching mode is a mode for tracking the position and movement state of the child who is the user of the mobile terminal 1. By selecting the watching mode, the communication terminal 2 can display the position and movement state of the child notified from the mobile terminal 1 on the display unit. For example, when the child arrives at a predetermined place (for example, a school or a cram school) or departs from the predetermined place, the mobile terminal 1 notifies the communication terminal 2 of location information and the like. Thereby, the parent can watch over the position and movement state of the child.

In the outing mode, for example, when the child (mobile terminal 1) is away from the parent (communication terminal 2) by a predetermined distance or more in order to prevent the child from getting lost when the parent and the child go out together, the mobile terminal 1 Is notified from the portable terminal 1 to the communication terminal 2. Thereby, the parent can easily grasp the position or the like of the lost child.
The communication terminal 2 is not limited to the watching mode and the outing mode, and various modes for the mobile terminal 1 can be selected.

Although the details will be described later, the mobile terminal 1 according to the present embodiment detects the operating state (for example, the position, orientation, and movement of the arm) of the arm, which is the wearing part to which the mobile terminal 1 is mounted, and the posture of the mobile terminal 1. To do. The mobile terminal 1 can estimate, for example, whether or not the child is watching the display screen 12 from the detected arm operating state and the attitude of the mobile terminal 1. And the portable terminal 1 switches the light emission intensity of the light emission part which illuminates the display screen 12 based on the detection result of the operation state of an arm and the attitude | position of the portable terminal 1. FIG.
For example, the mobile terminal 1 increases the light emission intensity of the light emitting unit when the arm is in an arm movement state or a posture of the mobile terminal 1 that can be estimated that the child is watching the display screen 12, and the child views the display screen 12. In the case of the arm operating state or the posture of the portable terminal 1 that can be estimated not to be, the light emission intensity of the light emitting unit is reduced. Thus, the child can view the display screen 12 in a bright state without performing an input operation on the mobile terminal 1, but the child can emit light by reducing the light emission intensity when the child does not see the display screen 12. The power consumption by the unit can be suppressed.

  FIG. 4 is a diagram illustrating an example of the brightness of the display screen 12 according to the light emission intensity of the light emitting unit. 4A shows the display screen 12 when the light emitting unit is weakly lit, and FIG. 4B shows the display screen 12 when the light emitting unit is fully lit. When the light emitting part is weakly lit, the display screen 12 is dark, and the display screen 12 when the light emitting part is fully lit is bright. Then, if the mobile terminal 1 is in an arm operating state where it can be estimated that the child is looking at the display screen 12, the light emitting unit is switched to full lighting as shown in FIG. If the arm is in an operating state that can be estimated not to be seen, the light emitting unit is switched to weak lighting as shown in FIG.

[Detailed configuration of mobile terminal]
An example of a detailed configuration of the mobile terminal 1 in which the user is a child will be described with reference to FIG.

  FIG. 5 is a block diagram illustrating an example of a functional configuration of the mobile terminal 1. As illustrated in FIG. 5, the mobile terminal 1 includes a communication IF unit 11, a display screen 12, a light emitting unit 13, a detection sensor 14, a storage unit 15, and a control unit 16.

  The communication IF unit 11 is a wireless communication interface for connecting to the mobile phone network N (FIG. 1). The communication IF unit 11 includes, for example, a modem circuit, a high frequency circuit, and an antenna. The communication IF unit 11 transmits / receives information to / from the communication terminal 2 via the mobile phone network N and makes a call.

  The display screen 12 is a liquid crystal display, for example. The display screen 12 can display various screens shown in FIG. 2 under the control of the control unit 16.

  The light emitting unit 13 is, for example, a backlight provided on the back side of the display screen 12 and illuminates the display screen 12. The light emitting unit 13 adjusts the brightness of the display screen 12 by switching the light emission intensity under the control of the control unit 16. In the present embodiment, the light emitting unit 13 automatically switches between weak lighting and full lighting according to the operating state of the arm.

  The detection sensor 14 is a detection unit that detects an operation state of the child and the posture of the mobile terminal 1. The detection sensor 14 includes, for example, an acceleration sensor that can measure components in three axis directions. The detection sensor 14 can detect the operation state (specifically, the position, orientation, and movement of the arm) of the arm on which the mobile terminal 1 is worn and the attitude of the mobile terminal 1 based on the output of the acceleration sensor.

  FIG. 6 is a diagram illustrating a state in which the child is moving the arm on which the mobile terminal 1 is worn. When the mobile terminal 1 is worn on the arm, as the arm moves up and down or rotates as shown in FIG. 6, the position and orientation of the arm change, and the output value of the acceleration sensor also changes. Change. For example, by looking at the output values of the components in the three-axis directions of the acceleration sensor, it can be estimated whether or not the display screen 12 of the mobile terminal 1 is facing the child when the arm is rotated. The posture of the mobile terminal 1 can be detected similarly.

  In addition to the acceleration sensor or instead of the acceleration sensor, the detection sensor 14 may include, for example, a gaze detection sensor that is provided around the display screen 12 and can detect the gaze of the child. When the line-of-sight detection sensor detects a line of sight, it can be estimated that the display screen 12 faces the child, and when the line-of-sight detection sensor does not detect the line of sight, it can be estimated that the display screen 12 does not face the child.

  The detection sensor 14 has a function of a detection unit that detects whether or not the mobile terminal 1 is worn on the arm. As described above, when the mobile terminal 1 is worn on the arm, the output value of the acceleration sensor increases as the arm moves up and down or rotates. On the other hand, when the portable terminal 1 is not mounted and left on a desk or the like, the output value of the acceleration sensor becomes zero. For this reason, it can be determined by seeing the output value of the acceleration sensor whether or not the mobile terminal 1 is worn on the arm. The detection sensor 14 may include a temperature sensor that can detect the temperature of the arm in addition to the acceleration sensor or instead of the acceleration sensor. Thereby, when the temperature sensor detects the temperature of the arm, it can be determined that the mobile terminal 1 is worn on the arm.

  Returning to FIG. 5, the storage unit 15 includes a nonvolatile memory (for example, ROM) and a volatile memory (for example, RAM). The storage unit 15 stores a program executed by the control unit 16, position information of the mobile terminal 1, and child status information. The storage unit 15 temporarily stores various data generated by the control unit 16 executing the program.

The storage unit 15 may store a schedule for managing a child's schedule. For example, the storage unit 15 stores the contents of each schedule in association with the start time and end time of the schedule. The schedule and time may be input by a child or may be input by a parent.
Further, the storage unit 15 may store movement information regarding the movement of the arm on which the mobile terminal 1 is worn. Here, the movement information is information indicating the rotation and vertical movement of the arm, and can be registered in advance by the user.

  The control unit 16 is a CPU, for example. The control unit 16 controls each unit of the mobile terminal 1 by executing a program stored in the storage unit 15. As illustrated in FIG. 5, the control unit 16 includes a communication unit 161, a mode execution unit 162, a determination unit 163, and a switching unit 164.

  The communication unit 161 communicates with the communication terminal 2 via the communication IF unit 11. For example, the communication unit 161 receives an instruction to execute a predetermined operation mode of the mobile terminal 1 from the communication terminal 2. Specifically, for example, when the watching mode or the outing mode illustrated in FIG. 3 is selected by the communication terminal 2, the communication unit 161 receives an instruction to execute the operation mode corresponding to the selected mode. The communication unit 161 outputs the received execution instruction to the mode execution unit 162.

  The mode execution unit 162 receives the execution instruction received by the communication unit 161 and starts an operation mode corresponding to the mode selected by the communication terminal 2. For example, when the watching mode is selected in the communication terminal 2, the mode execution unit 162 starts an operation mode in which the movement state of the child corresponding to the watching mode is tracked and information is notified to the communication terminal 2.

  Based on the detection result of the detection sensor 14, the determination unit 163 determines whether or not the arm on which the mobile terminal 1 is worn is in a predetermined state. For example, the determination unit 163 determines whether or not the child is moving his / her arm for viewing the display screen 12 based on the output values of the three-axis components of the acceleration sensor. When the child views the display screen 12, for example, an operation of slowly raising his arm and rotating is performed. Therefore, when such an operation is detected, the determination unit 163 allows the child to view the display screen 12. It is determined that the arm is moving. Further, the determination unit 163 may determine whether the mobile terminal 1 is worn on the arm based on the detection result of the detection sensor 14. The determination unit 163 outputs the determination result to the switching unit 164.

  The switching unit 164 switches the light emission intensity of the light emitting unit 13 that illuminates the display screen 12. That is, the switching unit 164 switches the lighting state of the light emitting unit 13. The lighting state can be switched according to the operation of the child.

  FIG. 7 is a diagram for explaining a lighting state of the light emitting unit 13. As shown in FIG. 7, the light emitting unit 13 can be switched between a no-light state, a weak lighting state, and a full lighting state. For example, when the child performs a touch operation on the display screen 12, the non-lighting state is switched to the weak lighting state, or the weak lighting state is switched to the full lighting state.

  In the present embodiment, the switching unit 164 switches the light emission intensity of the light emitting unit 13 based on the detection result of the detection sensor 14 even when there is no touch operation by a child. Specifically, the switching unit 164 switches the light emission intensity of the light emitting unit 13 based on the position, orientation, and movement of the arm detected by the detection sensor 14. Thereby, the switching unit 164 can automatically switch the light emission intensity of the light emitting unit 13 between when the display screen 12 is suitable for children and when the display screen 12 is not suitable for children, for example.

  Based on the detection result of the detection sensor 14, the switching unit 164 has a first emission intensity on the lower limit side of the emission intensity in the predetermined range and a second emission on the upper limit side of the emission intensity in the predetermined range. Switch between strength and. Here, the first emission intensity is an emission intensity corresponding to the weak lighting state of the light emitting unit 13, and the second emission intensity is an emission intensity corresponding to the full lighting state of the light emitting unit 13. The second light emission intensity may be a light intensity that is slightly smaller than the light emission intensity corresponding to the full lighting state.

  The switching unit 164 sets the light emission intensity of the light emitting unit 13 according to the determination result of the determination unit 163 that determines whether the child is operating the arm for viewing the display screen 12 based on the detection result of the detection sensor 14. You may switch. For example, when the determination unit 163 determines that the arm for viewing the display screen 12 is operating, the switching unit 164 switches the light emitting unit 13 to the second light emission intensity and views the display screen 12. When it is determined that the arm for stopping is being operated, the light emitting unit 13 is switched to the first light emission intensity. Thereby, the display screen 12 becomes bright when the child looks at the display screen 12, and the display screen 12 becomes dark when the child does not look at the display screen 12.

  The switching unit 164 may switch between the first emission intensity and the second emission intensity based further on the schedule stored in the storage unit 15. For example, the switching unit 164 sets the light emitting unit 13 to the first light emission intensity from a predetermined time before a time when the schedule changes in the schedule to a predetermined time later. A child who is a user has a high possibility of seeing the display screen 12 or performing a touch operation to confirm the schedule before and after the time when the schedule changes. Therefore, by setting the full lighting state from the predetermined time before the time when the schedule changes to the predetermined time, the child can easily confirm the schedule without performing an operation of switching the light emitting state of the light emitting unit 13. The convenience of the portable terminal 1 is improved.

  The switching unit 164 may switch the light emission intensity of the light emitting unit 13 when the movement of the arm detected by the detection sensor 14 is the same as or similar to the movement indicated by the movement information stored in the storage unit 15. For example, when the detected rotation or vertical movement of the arm is the same as or similar to the rotation or vertical movement of the arm indicated by the movement information stored in the storage unit 15, the switching unit 164 sets the emission intensity of the light emitting unit 13. Switch. Thereby, when a child moves an arm accidentally, it can prevent switching the light emission intensity of the light emission part 13. FIG.

  When the display screen 12 is a screen showing time (time screen) or a screen showing message reception (reception screen), the switching unit 164 switches the light emission intensity of the light emitting unit 13 based on the detection result of the detection sensor 14. Also good. That is, the switching unit 164 switches the light emission intensity of the light emitting unit 13 based on the detection result of the detection sensor 14 when the time screen or the reception screen is displayed immediately before the light emitting unit 13 is switched. Since the time screen and the reception screen are screens that the user wants to check frequently, the convenience is improved by switching the light emission intensity during such a screen.

  The switching unit 164 may turn off the light emitting unit 13 when the detection sensor 14 detects that the mobile terminal 1 is not worn on the arm. When the mobile terminal 1 is not worn on the arm, the child is less likely to see the display screen 12, and thus the power consumption by the light emitting unit 13 can be effectively suppressed by turning off the light emitting unit 13. .

  In the above description, the first light emission intensity of the light emitting unit 13 is the light emission intensity corresponding to the weak lighting state and the second light emission intensity is the light emission intensity corresponding to the full lighting state. However, the present invention is not limited to this. For example, the first emission intensity may be the emission intensity corresponding to the unlit state of the light emitting unit 13, and the second emission intensity may be the emission intensity corresponding to the weak lighting state. Further, the first emission intensity may be an emission intensity corresponding to the non-lighting state of the light emitting unit 13, and the second emission intensity may be an emission intensity corresponding to a full lighting state.

  In the above description, the display unit of the mobile terminal 1 includes the liquid crystal display and the backlight. However, the present invention is not limited to this. For example, the display unit of the mobile terminal 1 may be an organic EL display capable of self light emission. In such a case, the mobile terminal 1 switches the light emission degree of the organic EL display according to the operating state of the arm.

  In the above description, the mobile terminal 1 is a watch-type terminal that is worn on the wrist of a child. However, the present invention is not limited to this. For example, the portable terminal 1 may be a wearable terminal attached to an operable attachment site other than the wrist. Even in such a wearable terminal, it is possible to detect the operating state of the wearing site by the detection sensor. As described above, various types of wearable terminals can be applied as the mobile terminal 1.

[Light emission intensity switching process of the light emitting unit]
With reference to FIG. 8, a description will be given of a process of switching the light emission intensity of the light emitting unit 13 based on the detection result of the operating state of the arm on which the mobile terminal 1 is worn. The process of switching the light emission intensity of the light emitting unit 13 is realized by the control unit 16 of the mobile terminal 1 executing a program stored in the storage unit 15. The program may be downloaded from an external server.

  FIG. 8 is a flowchart for explaining an example of the emission intensity switching process of the light emitting unit 13. This flowchart is started when the light emitting unit 13 is in a weakly lit state.

  First, the detection sensor 14 detects the operating state of the arm on which the mobile terminal 1 is worn (step S102). Next, the determination unit 163 determines, based on the detection result of the detection sensor 14, whether or not the movement state of the arm is a predetermined state, in this case, whether or not the child is moving the arm for viewing the display screen 12. (Step S104).

  If it is determined in step S104 that the arm for viewing the display screen 12 is moving (Yes), the switching unit 164 switches the light emitting unit 13 from the weakly lit state to the fully lit state (step S106). ). As a result, when the child completes the movement of the arm, the light emitting unit 13 is fully lit, so that the display screen 12 is easy to see. On the other hand, if it is determined in step S104 that the arm for viewing the display screen 12 is not moving (No), the switching unit 164 maintains the light-emitting unit 13 in a weakly lit state.

  After step S106, the detection sensor 14 detects the movement state of the arm (step S108). Then, the determination unit 163 determines whether or not the child is in an operation for stopping the viewing of the display screen 12 (step S110).

  If it is determined in step S110 that the operation for stopping viewing the display screen 12 is in progress (Yes), the switching unit 164 switches the light emitting unit 13 from the full lighting state to the weak lighting state (step). S112). On the other hand, if it is determined in step S110 that the operation for stopping viewing the display screen 12 is not in progress (No), the switching unit 164 maintains the light-emitting unit 13 in the full lighting state.

  If the light emitting unit 13 is not turned off after step S112 (step S114: No), the operations of steps S102 to S112 described above are repeated. On the other hand, when the light emitting unit 13 is turned off by a child's operation or the like in step S114 (Yes), this process ends.

[Effect in the first embodiment]
As described above, the mobile terminal 1 according to the first embodiment detects the operating state of the arm (for example, the position, orientation, and movement of the arm) and the posture of the mobile terminal 1 that is the mounting site where the mobile terminal 1 is mounted. Then, the light emission intensity of the light emitting unit 13 that illuminates the display screen 12 is switched based on the detection result. Thereby, the mobile terminal 1 automatically switches the light emission intensity of the light emitting unit 13 according to the operation state of the arm reflecting the child's intention even without the child performing an operation of switching the light emission intensity. It is possible to appropriately control the operation of the light emitting unit 13 in accordance with the intention.

  For example, when the mobile terminal 1 is in the arm operating state or the posture of the mobile terminal 1 that can be estimated that the child is not looking at the display screen 12, the mobile terminal 1 switches to the first light emission intensity with a low intensity. In the case of the arm operating state or the posture of the mobile terminal 1 that can be estimated to be watching, the second light emission intensity is switched to a higher intensity. Thus, the child can view the display screen 12 in a bright state without performing an input operation on the mobile terminal 1, but the child can emit light by reducing the light emission intensity when the child does not see the display screen 12. The power consumption by the unit 13 can be suppressed.

<Second Embodiment>
In the first embodiment, the switching unit 164 switches the light emission intensity of the light emitting unit 13 according to the arm operating state detected by the detection sensor 14. In contrast, in the second embodiment, when there is a message (mail) reception or a telephone call from the communication terminal 2, the switching unit 164 turns off the light emitting unit 13 after setting the light emitting unit 13 to the second light emission intensity. This is different from the first embodiment.

  Specifically, when the communication unit 161 receives a message from the communication terminal 2 (or an incoming call), the switching unit 164 causes the light emitting unit 13 to be in a fully lit state for a predetermined time set in advance. 13 is turned off. When a message is received or a phone call is received, the child is highly likely to check the content of the message on the display screen 12, so that the child can display the light emitting unit 13 by keeping the light emitting unit 13 fully lit. Even without an operation of switching the light emission state, a message or the like can be confirmed with the display screen 12 being bright.

  When the detection sensor 14 detects that the mobile terminal 1 is not worn on the arm, the switching unit 164 performs the second light emission for a predetermined time even when a message is received from the communication terminal 2 or an incoming call is received. You may stop the operation | movement which turns off the light emission part 13 after making it intensity | strength. Thereby, when the portable terminal 1 is not worn on the arm, the child is less likely to see the display screen 12, so turning off the light emitting unit 13 effectively reduces the power consumption by the light emitting unit 13. Can be suppressed.

  FIG. 9 is a flowchart illustrating an operation example of the mobile terminal 1 according to the second embodiment. This flowchart is started when the communication unit 161 receives a mail from the communication terminal 2 (step S202).

  Next, when it is detected by the detection sensor 14 that the mobile terminal 1 is worn on the arm (step S204: Yes), the switching unit 164 switches the light emitting unit 13 to the full lighting state (step S206). Then, the switching unit 164 turns off the light emitting unit 13 when a predetermined time has elapsed since switching to the full lighting state (step S208). On the other hand, when it is detected in step S204 that the mobile terminal 1 is not worn on the arm (No), the switching unit 164 does not perform an operation of turning off the light emitting unit 13 after the light emitting unit 13 is fully lit.

  In the above description, the switching unit 164 is turned off after the light emitting unit 13 is fully lit, but is not limited thereto. For example, the switching unit 164 may cause the light emitting unit 13 to light up lightly after being fully lit.

<Third Embodiment>
The third embodiment will be described with reference to FIG.
FIG. 10 is a block diagram illustrating an example of a functional configuration of the mobile terminal 1 according to the third embodiment.

  The mobile terminal 1 according to the third embodiment includes a power supply unit 17 such as a battery in addition to the functional configuration described in FIG. In the third embodiment, when the remaining amount of the power supply unit 17 is equal to or less than a predetermined amount, the control unit 16 performs the light emission intensity based on the detection result of the detection sensor 14 when a touch operation is performed on the display screen 12. The light emitting unit 13 is caused to emit light without switching. For example, when the remaining amount of the power supply unit 17 is small, the control unit 16 causes the light emitting unit 13 to emit light with the first light emission intensity having a small intensity. Thereby, when the remaining amount of the power supply part 17 is small, the power consumption by the light emission part 13 can be suppressed.

  The detection sensor 14 of the third embodiment also has a function of a luminance detection unit that detects ambient environmental luminance. That is, the detection sensor 14 detects whether the surrounding is bright or dark. Then, the switching unit 164 switches the light emission intensity of the light emitting unit 13 according to the environmental brightness detected by the detection sensor 14. For example, when the detection sensor 14 detects that the surrounding is dark, the switching unit 164 switches the light emission intensity of the light emitting unit 13 to the second light emission intensity. That is, when the surroundings are dark, the light emission intensity of the light emitting unit 13 is switched to the second light emission intensity instead of the first light emission intensity. Thereby, compared with the case where it switches to 2nd light emission intensity again after switching to 1st light emission intensity, power consumption can be suppressed.

When the communication terminal 2 also has a light emitting unit that illuminates the display screen (hereinafter referred to as a second light emitting unit), the mobile terminal 1 emits light in conjunction with the light emitting state of the second light emitting unit of the communication terminal 2. The light emission state of the unit 13 may be controlled.
For example, in the control unit 16 of the mobile terminal 1, the communication unit 161 receives from the communication terminal 2 light emission information that the second light emitting unit of the communication terminal 2 emits light with the light emission intensity corresponding to the second light emission intensity (for example, The communication unit 161 may switch the light emission intensity of the light emitting unit 13 to the second light emission intensity. When the outing mode described above is set, there are cases where the parent using the communication terminal 2 and the child using the mobile terminal 1 want to see the display screen of each terminal at the same timing. Therefore, when the second light emitting unit emits light so that the parent can view the display screen of the communication terminal 2, the mobile terminal 1 also automatically causes the light emitting unit 13 to emit light so that the child can emit light from the light emitting unit 13. No need to switch state.
In addition, when the communication unit 161 receives light emission information from the communication terminal 2 that the second light emitting unit of the communication terminal 2 emits light with a light emission intensity corresponding to the second light emission intensity, The light emission intensity of the light emitting unit 13 is switched to the first light emission intensity. And the control part 16 may switch to 2nd light emission intensity | strength based on the detection result of the detection sensor 14 after switching to 1st light emission intensity. In such a case, the light emission intensity of the light emitting unit 13 can be switched to reflect the intention of the child.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. In particular, the specific embodiments of the distribution / integration of the devices are not limited to those illustrated above, and all or a part thereof may be added in arbitrary units according to various additions or according to functional loads. It can be configured functionally or physically distributed and integrated.

DESCRIPTION OF SYMBOLS 1 Portable terminal 2 Communication terminal 12 Display screen 13 Light emission part 14 Detection sensor 15 Storage part 161 Communication part 163 Determination part 164 Switching part 17 Power supply part S Communication system

Claims (15)

A mobile terminal to be worn on a user wearing site,
A display screen;
A light emitting unit for illuminating the display screen;
A detection unit for detecting an operation state of the wearing part or a posture of the mobile terminal;
Based on the detection result of the detection unit, a control unit that switches the emission intensity of the light emitting unit;
A mobile terminal comprising: The control unit, based on a detection result of the detection unit, a first emission intensity on the lower limit side of the emission intensity of the predetermined range by the light emitting unit and a second upper limit side of the emission intensity of the predetermined range. Switch between emission intensity,
The mobile terminal according to claim 1. The wearing site is a user's arm,
The control unit switches between the first emission intensity and the second emission intensity based on the position, orientation, and movement of the arm detected by the detection unit.
The mobile terminal according to claim 2. A power supply unit,
When the remaining power of the power supply unit is less than or equal to a predetermined amount, the control unit switches the light emitting unit without switching the light emission intensity based on the detection result of the detection unit when a touch operation is performed on the display screen. Illuminate,
The mobile terminal according to claim 3. A storage unit for storing movement information related to the predetermined movement of the arm;
The control unit switches the light emission intensity of the light emitting unit when the movement of the arm detected by the detection unit is the same as or similar to the movement indicated by the movement information stored in the storage unit.
The mobile terminal according to claim 3. A detection unit for detecting whether or not the user is wearing the device;
The control unit turns off the light emitting unit when it is detected by the detection unit that the user is not wearing the user.
The portable terminal of any one of Claim 2 to 5. A storage unit for storing a schedule for managing the user's schedule;
The controller further switches the first emission intensity and the second emission intensity based on the schedule;
The portable terminal of any one of Claim 2 to 6. A communication unit that communicates with the communication terminal;
The control unit, when receiving a message from the communication terminal or receiving a call from the communication terminal, turns off the light emitting unit after setting the second light emission intensity for a predetermined time,
The portable terminal of any one of Claim 2 to 7. A detection unit for detecting whether or not the user is wearing the device;
When the control unit detects that the user is not wearing the user, the control unit sets the second light emission intensity for a predetermined time even when the message is received from the communication terminal or the incoming call is received. After stopping the operation to turn off the light emitting unit,
The mobile terminal according to claim 8. A communication unit that communicates with a communication terminal having a second light emitting unit that illuminates the second display screen;
The control unit switches to the second light emission intensity when the communication unit receives light emission information emitted by the second light emission unit at a light emission intensity corresponding to the second light emission intensity, from the communication terminal.
The portable terminal of any one of Claim 2 to 9. A communication unit that communicates with a communication terminal having a second light emitting unit that illuminates the second display screen;
The controller is
When the communication unit receives from the communication terminal light emission information that the second light emitting unit emits light with a light emission intensity corresponding to the second light emission intensity, the first light emission intensity is switched to,
After switching to the first emission intensity, switching to the second emission intensity based on the detection result of the detection unit,
The portable terminal of any one of Claim 2 to 9. A brightness detection unit for detecting ambient brightness;
The control unit switches the light emission intensity of the light emitting unit according to the environmental luminance detected by the luminance detection unit,
The portable terminal of any one of Claim 1 to 11. The control unit switches the light emission intensity of the light emitting unit based on the detection result of the detection unit when the display screen is a screen indicating time or a screen indicating message reception.
The portable terminal of any one of Claim 1 to 12. Detecting the operating state of the wearing part of the user wearing the portable terminal or the posture of the portable terminal;
Based on the detection result, switching the light emission intensity of the light emitting unit that illuminates the display screen of the mobile terminal;
A light emission control method comprising: To the computer that the portable terminal has,
Detecting the operating state of the wearing part of the user wearing the mobile terminal or the attitude of the mobile terminal;
Based on the detection result, switching the light emission intensity of the light emitting unit that illuminates the display screen of the mobile terminal;
A program for running