JP2014060481A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal which allows a user, while walking, to suppress the operation of a cellular phone easily.SOLUTION: A portable terminal includes a display, mobile information acquisition means for acquiring the mobile information of a user, walking determination means for determining whether or not a user is walking by the mobile information from the mobile information acquisition means, and display control means for continuing the lighting period of the display according to the operation when a determination is made by the walking determination means that the user is not walking, and not continuing the lighting period of the display according to the operation when a determination is made that the user is walking.

Description

  The present invention relates to a mobile terminal, and more particularly, to control of an operation state while a user is walking.

  In recent years, mobile phones and the like that perform calls and mail transmission / reception or content reproduction by wireless communication have become more multifunctional and have improved convenience in use. It is also conceivable that a user who possesses such a cellular phone operates a mail while walking. In particular, when a user who is concentrating on the operation is operating without confirming the front, it is very dangerous such as colliding with a pedestrian or stepping off a step.

  In this regard, Patent Document 1 discloses a method in which a mobile phone is not operated during walking or driving.

  Patent Document 2 also discloses a method of disabling the operation of a mobile phone when driving a car.

JP 2006-109033 A JP 2008-53988 A

  However, the method of Patent Document 1 requires the user to set the walking safety mode, forcing the user to perform the operation, and the operation is troublesome. Further, the method of Patent Document 2 also has a function of confirming to the user whether or not to reject the operation according to the engine sound, and the operation is troublesome because the user needs to respond according to the confirmation. There is.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a mobile terminal that can easily suppress the operation of the user's mobile phone while the user is walking or the like. To do.

  A portable terminal according to an aspect of the present invention includes a display device, movement information acquisition means for acquiring user movement information, and walking determination means for determining whether the user is walking based on movement information from the movement information acquisition means. When the walking determining means determines that the user is not walking, the lighting period of the display device according to the operation is continued, and when it is determined that the user is walking, the lighting period of the display device according to the operation is not continued. Display control means.

  Preferably, the movement information acquisition unit acquires the position information of the portable terminal, the walking determination unit calculates the movement speed of the portable terminal based on the position information of the portable terminal, and the movement speed is in the first range. It is determined whether or not the user is walking based on whether or not the user is inside.

  In particular, the display control means determines the lighting period of the display device according to the operation when the walking determination means determines that the user is not walking, and the calculated moving speed is within the second range. Do not continue.

  Preferably, the movement information acquisition unit acquires the step count information of the user, and the walking determination unit determines whether the user is walking based on whether or not the step count information of the user is a predetermined value or more. to decide.

  Preferably, the apparatus further includes a sensor for detecting a predetermined movement associated with the movement of the user, and the display control unit determines that the user is not walking by the walking determination unit. When a predetermined movement accompanying the movement is detected, the lighting period of the display device according to the operation is not continued.

  It is possible to easily suppress the user's operation of the mobile phone while the user is walking or the like.

1 is an external configuration diagram of a mobile phone 1 according to a first embodiment. It is a block diagram which shows an example of the hardware constitutions of the mobile telephone 1 by one Embodiment. It is a flowchart explaining the movement state judgment process according to Embodiment 1 of this invention. It is a figure explaining the table which judges the movement state of the user according to Embodiment 1 of this invention. It is a flowchart explaining the display control according to Embodiment 1 of the present invention. It is a flowchart explaining the movement state judgment process according to Embodiment 2 of this invention. It is a figure explaining the table which judges the movement state according to Embodiment 2 of this invention. It is a figure explaining the table which judges the movement state of the user according to Embodiment 2 of this invention. It is a flowchart explaining the display control according to Embodiment 3 of this invention. It is a flowchart explaining the movement state judgment process according to Embodiment 3 of this invention. It is a flowchart explaining the display control according to Embodiment 4 of this invention.

  Hereinafter, embodiments will be described in detail with reference to the drawings. In the following description, an example using a mobile phone (terminal device) such as a smartphone having a display function will be described.

(Embodiment 1)
[Appearance structure of mobile phone]
FIG. 1 is an external configuration diagram of mobile phone 1 according to the first embodiment.

  Referring to FIG. 1, the mobile phone 1 includes a housing. A touch panel occupies most of one front face of the casing.

  The touch panel is provided so as to cover the display unit, and detects a contact operation. The display unit includes, for example, an LCD (Liquid Crystal Display), an organic EL (ElectroLuminescence) display, and an inorganic EL display.

  The touch panel receives an instruction by detecting an operation of a contact object that contacts the operation surface. Examples of the contact object include a user's finger and a stylus pen. As a method for detecting the operation of the contact object on the touch panel, a pressure-sensitive method for detecting a change in pressure, an electrostatic method for detecting an electric signal due to static electricity, or other methods can be applied. The operation of the contact object is detected by coordinate information indicating the position where the contact is made. This information is represented, for example, by coordinate values on two axes in the short side direction and the long side direction of the touch panel.

[Overall configuration of mobile phone]
FIG. 2 is a block diagram illustrating an example of a hardware configuration of the mobile phone 1 according to the embodiment.

  Referring to FIG. 2, a mobile phone 1 includes a CPU 2 (Central Processing Unit (CPU)), a storage unit 10, a communication unit 6, an input unit 9, a liquid crystal display unit 8, a GPS receiving unit 12, a pedometer. 3, an audio signal processing circuit 11, a microphone 13, a speaker 15, a timer 17 and the like.

  The CPU 2 controls the overall operation of the mobile phone 1 by executing a program stored in the storage unit 10. Specifically, the CPU 2 controls the display control unit 14 that controls the liquid crystal display unit 8, the communication unit 6, the audio signal processing circuit 11, and the like, the main communication control unit 16 for realizing a call function, and various calculations. An execution unit 18 that executes processing, a recording control unit 20 that controls writing / reading of data to / from the storage unit 10, and the like are included.

  The storage unit 10 is configured by, for example, an EEPROM (Electrically Erasable Programmable Read-Only Memory) such as a flash memory. A hard disk may be provided in place of the nonvolatile memory.

  The communication unit 6 performs radio communication of audio signals and data signals with the radio base station via the antenna 7 based on the command of the CPU 2.

  The liquid crystal display unit 8 is constituted by a liquid crystal display panel or the like, and displays character information and an image based on a command from the CPU 2. The liquid crystal display unit 8 includes a backlight 21.

  The input unit 9 includes hardware keys for the user to perform input operations such as numbers and characters on the mobile phone 1. Alternatively, when the mobile phone 1 is a smartphone or the like, the input unit 9 may be configured to include a touch panel integrated with the liquid crystal display unit 8. In this case, since the user performs most of the input operation through the touch panel, only a few keys such as a power key and a volume key are provided as hardware keys, and keys for numbers and letters are not provided. Also good.

  The GPS receiver 12 includes an RFIC (Radio Frequency Integrated Circuit) that receives radio waves from GPS satellites via the antenna 19. The radio wave from the GPS satellite is a carrier wave modulated by a C / A code (a kind of pseudo-random code) unique to each satellite and navigation message data (including satellite position information and information on the issue time). is there. The GPS receiver 12 amplifies radio waves from GPS satellites and then down-converts. The GPS receiving unit 12 outputs a baseband signal (C / A code and navigation message data) obtained by A / D converting the down-converted signal.

  The pedometer 3 acquires step count information when the user moves. Specifically, the pedometer 3 includes an acceleration sensor 4 and a counter 5. The vertical movement of the user is detected according to the acceleration sensor 4, the detection signal of the acceleration sensor 4 is received by the counter 5, and the counter 5 counts up as the number of steps.

The timer unit 17 measures time.
The audio signal processing circuit 11 performs AD (Analog-to-Digital) conversion on the audio signal detected by the microphone 13 and performs signal processing such as encoding and noise removal on the converted digital audio signal. The audio signal processing circuit 11 further performs predetermined signal processing on the digital signal to be acoustically output and outputs it to the speaker 15. Unlike the case of FIG. 1, the CPU 2 may execute the function of the audio signal processing circuit 11 based on a program without providing the audio signal processing circuit 11.

  FIG. 3 is a flowchart illustrating a movement state determination process according to the first embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

  Referring to FIG. 3, first, CPU 2 obtains a position (step S2). Specifically, the execution unit 18 instructs the GPS reception unit 12 to acquire the position of the mobile phone 1.

  Next, the CPU 2 determines whether or not a predetermined period has elapsed (step S4). The execution unit 18 uses the time measuring unit 17 to determine whether a predetermined period has elapsed. The predetermined period may be 1 minute. Note that the period is an example, and can be arbitrarily adjusted to an appropriate value.

  In step S4, when CPU 2 determines that the predetermined period has elapsed (YES in step S4), it proceeds to the next step. On the other hand, if it is determined in step S4 that the predetermined period has not elapsed (NO in step S4), the process waits until it elapses.

  And CPU2 acquires a position (step S6). Specifically, the execution unit 18 instructs the GPS reception unit 12 to acquire the position of the mobile phone 1.

  Then, the CPU 2 calculates a moving speed (step S8). Specifically, the execution unit 18 calculates the moving speed based on the position information acquired in step S2 and the position information acquired in step S6.

  Next, the CPU 2 analyzes the state (step S10). Specifically, the execution unit 18 analyzes the state of the mobile phone 1 according to a table that determines the moving state based on the calculated moving speed. It is assumed that the table is stored in advance in the storage unit 10.

  Next, the CPU 2 updates the state (step S12). The recording control unit 20 stores the analyzed state of the mobile phone 1 in the storage unit 10. In addition, when the data of the said state are already stored in the memory | storage part 10, it shall update.

  And it returns to step S4 again. Then, it is determined whether or not the predetermined period has elapsed, and when it is determined that the predetermined period has elapsed, the above-described process of re-acquiring the position and calculating the moving speed again is repeated.

  Therefore, the movement state of the mobile phone 1 is determined every time a predetermined period has elapsed and stored in the storage unit 10.

  FIG. 4 is a diagram illustrating a table for determining the movement state of the user according to the first embodiment of the present invention. The table is stored in the storage unit 10.

Referring to FIG. 4, the correspondence between speed per hour and the user's movement state is shown.
When the movement speed calculated based on the table is less than 3 km / hour, it is determined that the user is in a stopped state. The stop state is a concept including not only the case where the mobile phone 1 is completely stopped, but also a state equivalent to the stop state, such as when the user is moving and moving within a certain range such as a house.

  When the calculated moving speed is less than 3 to 6 km / h (within the first range), it is determined that the user is in a walking state.

  When the calculated moving speed is 6 km / h or more, it is determined that the user is in a riding state on the vehicle.

  FIG. 5 is a flowchart illustrating display control according to the first embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

  Referring to FIG. 5, CPU 2 determines whether or not there is an operation from the user (step S20). Specifically, it is determined whether or not there is an operation instruction via the input unit 9 of the user.

  In step S20, when CPU 2 determines that there is an operation (YES in step S20), it executes lighting control (step S22). Specifically, when there is an operation instruction via the input unit 9 by the user, the display control unit 14 controls the liquid crystal display unit 8 to perform lighting control for turning on the backlight 21.

  Next, it is determined whether or not a predetermined period has elapsed (step S24). The display control unit 14 uses the time measuring unit 17 to determine whether a predetermined period has elapsed.

  If it is determined that the predetermined period has elapsed (YES in step S24), the moving state is confirmed (step S26). Specifically, the display control unit 14 refers to the storage unit 10 to check the movement state of the user stored (updated).

  Next, it is determined whether the moving state is a walking state (step S28). The display control unit 14 determines whether or not the movement state data stored in the storage unit 10 is walking (less than 3 to 6 km / hour).

  If it is determined in step S28 that the moving state is the walking state (YES in step S28), the extinction control is executed (step S30). Specifically, the display control unit 14 instructs the liquid crystal display unit 8 to execute a turn-off control for turning off the backlight 21.

Then, the process ends (END).
As a result, when the user is walking, the backlight 21 is turned off after a predetermined period of time and nothing is displayed on the liquid crystal display unit 8, and thus the liquid crystal display unit 8 cannot be viewed and operated.

  On the other hand, if it is determined in step S28 that the moving state is not the walking state (NO in step S28), lighting continuation control is executed (step S29).

Then, the process ends (END).
That is, the display control unit 14 performs the lighting continuation control for continuing the lighting of the backlight 21 in the liquid crystal display unit 8 instead of the extinguishing control for turning off the backlight 21. For example, the extinguishing control or the like is executed after a certain period of time has passed. Alternatively, when there is no user instruction, the display on the liquid crystal display unit 8 may be continued.

  Therefore, in the first embodiment, when the user's movement state is determined based on the position information and it is determined that the user is in the walking state according to the calculated movement speed, the user's movement state is determined to be unsafe. Therefore, the backlight 21 of the liquid crystal display unit 8 is turned off when a predetermined period has elapsed since the light was turned on. On the other hand, when it is determined that the user is not in the walking state according to the calculated moving speed, the backlight 21 of the liquid crystal display unit 8 is displayed even when a predetermined period has elapsed since the user turned on because the user's moving state is determined to be safe. Continue to light up.

  Thereby, when the user is not walking, the lighting state of the backlight 21 is continued, and it is possible to comfortably operate the mobile phone 1 and perform various functions while looking at the liquid crystal display unit 8. . On the other hand, when the user is walking, the lighting state of the backlight 21 is turned off after a predetermined period of time, so that the operation of the mobile phone 1 is suppressed while walking and the user is encouraged to stop and operate safely. Is possible.

  Note that the cellular phone 1 according to the first embodiment is a method that does not use the step information of the pedometer 3 in order to determine the user's movement state, and therefore, the pedometer 3 may be omitted. .

(Embodiment 2)
In mobile phone 1 according to the second embodiment, a method for determining a user's movement state using pedometer 3 will be described.

  FIG. 6 is a flowchart illustrating a movement state determination process according to the second embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

  Referring to FIG. 6, first, CPU 2 instructs pedometer 3 to start counting the number of steps (step S40). The execution unit 18 instructs the pedometer 3 to start counting the number of steps.

  Next, the CPU 2 determines whether or not a predetermined period has elapsed (step S42). The execution unit 18 uses the time measuring unit 17 to determine whether a predetermined period has elapsed. The predetermined period may be 1 minute. Note that the period is an example, and can be arbitrarily adjusted to an appropriate value.

  In step S42, when CPU 2 determines that the predetermined period has elapsed (YES in step S42), it proceeds to the next step. On the other hand, if it is determined in step S42 that the predetermined period has not elapsed (NO in step S42), the process returns to step S40 and the step count is continued.

  When CPU 2 determines that the predetermined period has elapsed (YES in step S42), CPU 2 obtains a count value of the number of steps (step S43). Specifically, the execution unit 18 acquires the counter value counted by the counter 5.

  Then, the CPU 2 calculates the step speed (step S44). Specifically, the execution unit 18 calculates the step speed based on the counter value acquired in step S43. Here, the step speed is the number of steps measured per unit period.

  Next, the CPU 2 analyzes the state (step S45). Specifically, the execution unit 18 analyzes the state of the mobile phone 1 according to a table that determines the moving state based on the calculated step speed. It is assumed that the table is stored in advance in the storage unit 10.

  Next, the CPU 2 updates the state (step S46). The recording control unit 20 stores the analyzed state of the mobile phone 1 in the storage unit 10. In addition, when the data of the said state are already stored in the memory | storage part 10, it shall update.

  And it returns to step S40 again. Then, it is determined whether or not the predetermined period has elapsed, and if it is determined that the predetermined period has elapsed, the above-described process of acquiring the step count value and calculating the step speed is repeated. In this case, the step speed is calculated by resetting the count value of the number of steps.

  Therefore, the movement state of the mobile phone 1 is determined every time a predetermined period has elapsed and stored in the storage unit 10.

  FIG. 7 is a diagram illustrating a table for determining a movement state according to the second embodiment of the present invention. The table is stored in the storage unit 10.

With reference to FIG. 7, the correspondence between the step speed and the movement state of the user is shown.
When the step speed calculated based on the table is less than 10 steps / minute, it is determined that the user is in a stopped state or a boarding state.

  When the calculated step speed is 11 steps / minute or more, it is determined that the user is in a walking state.

  The display control process according to the second embodiment of the present invention is the same as that described in FIG. That is, in the second embodiment, when the user's moving state is determined based on the step count information and is determined to be the walking state, the user's moving state is determined to be unsafe. The backlight 21 of the liquid crystal display unit 8 is turned off when a predetermined period has elapsed since the lighting. On the other hand, when it is determined that the user is not in a walking state, the backlight 21 of the liquid crystal display unit 8 is continuously turned on even when a predetermined period has elapsed since the user is turned on because the user's moving state is determined to be safe.

  Thereby, when the user is not walking, the lighting state of the backlight 21 is continued, and it is possible to comfortably operate the mobile phone 1 and perform various functions while looking at the liquid crystal display unit 8. . On the other hand, when the user is walking, the lighting state of the backlight 21 is turned off after a predetermined period of time, so that the operation of the mobile phone 1 is suppressed while walking and the user is encouraged to stop and operate safely. Is possible.

  Note that the mobile phone 1 according to the second embodiment is a method that does not use the position information from the GPS receiver 12 in order to determine the movement state of the user, so that the GPS receiver 12 may not be provided. It is.

(Embodiment 3)
In the first embodiment, when the moving speed is fast, it is determined that the vehicle is in a riding state. On the other hand, in the case of a vehicle such as a bicycle, it is determined that the user is in the boarding state and the user's moving state may be determined to be safe.

  FIG. 8 is a diagram illustrating a table for determining the movement state of the user according to the second embodiment of the present invention. The table is stored in the storage unit 10.

With reference to FIG. 8, the correspondence between the speed per hour and the movement state of the user is shown.
When the movement speed calculated based on the table is less than 3 km / hour, it is determined that the user is in a stopped state.

  When the calculated moving speed is less than 3 to 6 km / h (within the first range), it is determined that the user is in a walking state.

  When the calculated moving speed is less than 6 to 30 km / h (within the second range), it is determined that the user is in a boarding state on the vehicle. The vehicle is determined to be a bicycle.

  When the calculated moving speed is 30 km / h or more, it is determined that the user is in a riding state on the vehicle. It is determined that the vehicle is a car or a train.

  Then, the movement state of the user is determined according to the table of FIG. Since this process is the same as that described with reference to FIG. 3, detailed description thereof will not be repeated.

  FIG. 9 is a flowchart illustrating display control according to the third embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

Referring to FIG. 9, the difference from the process of FIG. 5 is that step S32 is added.
Specifically, if it is determined in step S28 that the moving state is not the walking state (NO in step S28), it is determined whether the vehicle is on a bicycle (bicycle) (step S32).

  If it is determined in step S32 that the vehicle is on board (bicycle) (YES in step S32), the extinction control is executed (step S30). The display control unit 14 instructs the liquid crystal display unit 8 to execute control for turning off the backlight 21.

Then, the process ends (END).
On the other hand, if it is determined in step S32 that the vehicle is not a boarding (bicycle) (NO in step S32), lighting continuation control is executed (step S29).

  Then, the process ends (END). The other processing is the same as that described with reference to FIG. 5, and therefore detailed description thereof will not be repeated.

  Therefore, in the third embodiment, when the user's movement state is determined based on the position information and it is determined that the user is in the walking state, the user's movement state is determined to be unsafe and thus lit. When a predetermined period has elapsed, the backlight 21 of the liquid crystal display unit 8 is turned off. On the other hand, in the first embodiment, when it is determined that the user is not in a walking state, the backlight 21 of the liquid crystal display unit 8 is also activated even when a predetermined period has elapsed since the user's moving state is determined to be safe and turned on. Although the case where lighting is continued has been described, it is not safe when the user is on a bicycle or the like. In the third embodiment, when the user is not in a walking state, it is further determined whether the user is in a boarding (bicycle) state, and if the user's moving state is in a boarding (bicycle) state, Since it is determined that the user's moving state is not safe, the backlight 21 of the liquid crystal display unit 8 is turned off when a predetermined period has elapsed since the user turned on.

  By this processing, when the user is not walking, for example, when riding a bicycle, the backlight 21 is turned off after a predetermined period, so the mobile phone 1 is operated while riding the bicycle. It is possible to urge the user to stop and operate safely.

(Embodiment 4)
In the above-described third embodiment, the method of determining by the moving speed as the determination of the riding (bicycle) state has been described. However, in the fourth embodiment, the riding (bicycle) state is set as the user's moving state according to another method. A method for determination will be described.

  The acceleration sensor 4 according to the fourth embodiment is used for determining a predetermined movement of the user. Specifically, the acceleration sensor 4 is assumed to be a triaxial acceleration sensor. The three-axis acceleration sensor can measure left and right shaking with respect to the traveling direction of the user.

  In the present example, the acceleration sensor 4 is used to detect a left / right swing caused by a pedaling motion when the user operates a bicycle, and the user's movement state is determined based on the detection result.

  FIG. 10 is a flowchart illustrating a movement state determination process according to the third embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

  Referring to FIG. 10, first, CPU 2 obtains a position (step S2). Specifically, the execution unit 18 instructs the GPS reception unit 12 to acquire the position of the mobile phone 1.

  Next, the CPU 2 instructs the acceleration sensor 4 to start measurement (step S3). Specifically, the execution unit 18 instructs the start of measurement by the acceleration sensor 4, receives a detection signal of the acceleration sensor 4, and the recording control unit 20 stores the measurement result in the acceleration sensor 4 in the storage unit 10. Shall.

  Next, the CPU 2 determines whether or not a predetermined period has elapsed (step S4). The execution unit 18 uses the time measuring unit 17 to determine whether a predetermined period has elapsed. The predetermined period may be 1 minute. Note that the period is an example, and can be arbitrarily adjusted to an appropriate value.

  If the CPU 2 determines in step S4 that the predetermined period has elapsed (YES in step S4), the CPU 2 instructs the acceleration sensor 4 to end the measurement (step S5).

  On the other hand, if it is determined in step S4 that the predetermined period has not elapsed (NO in step S4), the process returns to step S3, and measurement by the acceleration sensor 4 is continued.

  Next, the CPU 2 acquires the position (step S6). Specifically, the execution unit 18 instructs the GPS reception unit 12 to acquire the position of the mobile phone 1.

  Then, the CPU 2 calculates a moving speed (step S8). Specifically, the execution unit 18 calculates the moving speed based on the position information acquired in step S2 and the position information acquired in step S6.

  Next, the CPU 2 analyzes the state (step S10). Specifically, the execution unit 18 analyzes the state of the mobile phone 1 according to the table of FIG. 4 that determines the moving state based on the calculated moving speed. It is assumed that the table is stored in advance in the storage unit 10.

  Next, the CPU 2 determines whether or not a predetermined movement is detected based on the measurement result in the acceleration sensor 4 stored in the storage unit 10 (step S11). Specifically, the execution unit 18 analyzes the data of the measurement result of the acceleration sensor 4 stored in the storage unit 10 and determines whether the left and right shaking with respect to the traveling direction in a predetermined period has occurred a predetermined number of times or more. To do. That is, when the left and right shaking has occurred a predetermined number of times or more, it can be determined that the user has moved the pedal when operating the bicycle. If the left and right shaking has occurred a predetermined number of times or more, it is determined that a predetermined movement has been detected. On the other hand, for example, when riding a car or a train instead of riding a bicycle, it is determined that the left and right shaking in a predetermined period is less than a predetermined number, and the predetermined movement is not detected. .

  Next, the CPU 2 updates the state (step S12). The recording control unit 20 stores the analyzed state of the mobile phone 1 in association with the determination result of the predetermined movement based on the measurement result in the acceleration sensor 4 in the storage unit 10. Specifically, a predetermined flag corresponding to the predetermined movement may be provided, and the presence / absence of the predetermined movement may be determined by turning the flag on / off. In addition, when the data of the said state are already stored in the memory | storage part 10, it shall update.

  And it returns to step S3 again. Then, it is determined whether or not the predetermined period has elapsed. When it is determined that the predetermined period has elapsed, the position is acquired and the moving speed is calculated, and the predetermined movement is determined based on the measurement result of the acceleration sensor 4. The above processing for executing is repeated. In addition, when returning to step S3, the measurement result in the acceleration sensor 4 shall be reset.

  Therefore, the movement state of the mobile phone 1 is determined every time a predetermined period has elapsed and stored in the storage unit 10.

  FIG. 11 is a flowchart illustrating display control according to the fourth embodiment of the present invention. This process is a process that the CPU 2 executes in cooperation with each unit mainly based on a program stored in the storage unit 10.

Referring to FIG. 11, it differs from the process of FIG. 5 in that step S34 is added.
Specifically, when it is determined in step S28 that the moving state is not the walking state (NO in step S28), it is determined whether or not there is a predetermined movement (step S34). Specifically, for example, it is possible to confirm a predetermined flag corresponding to the predetermined movement, and to determine that there is a predetermined movement if the flag is ON, for example.

  If it is determined in step S34 that there is a predetermined movement (YES in step S34), the extinction control is executed (step S30). The display control unit 14 instructs the liquid crystal display unit 8 to execute control for turning off the backlight 21.

Then, the process ends (END).
On the other hand, if it is determined in step S34 that there is no predetermined movement (NO in step S34), lighting continuation control is executed (step S29).

  Then, the process ends (END). The other processing is the same as that described with reference to FIG. 5, and therefore detailed description thereof will not be repeated.

  Therefore, in the fourth embodiment, when the user's movement state is determined based on the position information and it is determined that the user is in the walking state, the user's movement state is determined to be unsafe and thus lit. When a predetermined period has elapsed, the backlight 21 of the liquid crystal display unit 8 is turned off. On the other hand, in the first embodiment, when it is determined that the user is not in a walking state, the backlight 21 of the liquid crystal display unit 8 is also activated even when a predetermined period has elapsed since the user's moving state is determined to be safe and turned on. Although the case where lighting is continued has been described, it is not safe when the user is on a bicycle or the like. In the fourth embodiment, when it is not in the walking state, it is further determined whether or not a predetermined movement that occurs in the riding (bicycle) state is detected. When it is determined that the state is (bicycle), it is determined that the moving state of the user is not safe, and thus the backlight 21 of the liquid crystal display unit 8 is turned off when a predetermined period has elapsed since the lighting.

  By this processing, when the user is not walking, for example, when riding a bicycle, the backlight 21 is turned off after a predetermined period, so the mobile phone 1 is operated while riding the bicycle. It is possible to urge the user to stop and operate safely.

  In this example, a method using the acceleration sensor 4 provided in the pedometer 3 will be described. However, the acceleration sensor 4 is not limited to the acceleration sensor, and another acceleration sensor is provided to use the other acceleration sensor. May be.

  Further, in this example, a method of detecting a user's predetermined movement using a triaxial acceleration sensor has been described. However, the present invention is not limited to a triaxial acceleration sensor, and any sensor can be used as long as the movement can be detected. It may be used.

  The embodiment disclosed this time is an exemplification, and the present invention is not limited to the above contents. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Mobile phone, 2 CPU, 3 Pedometer, 4 Accelerometer, 5 Counter, 6 Communication part, 7, 19 Antenna, 8 Liquid crystal display part, 9 Input part, 10 Memory | storage part, 11 Audio | voice signal processing circuit, 12 Receiver part, 13 microphones, 14 display control units, 15 speakers, 16 main communication control units, 17 timing units, 18 execution units, 20 recording control units, 21 backlights.

Claims (5)

A display device;
Movement information acquisition means for acquiring user movement information;
Walking determination means for determining whether or not the user is walking according to movement information from the movement information acquisition means;
When it is determined by the walking determination means that the user is not walking, the lighting period of the display device according to the operation is continued, and when it is determined that the user is walking, the display device is turned on according to the operation. A portable terminal comprising display control means that does not continue the period. The movement information acquisition means acquires position information of the mobile terminal,
The walking determination means calculates the moving speed of the portable terminal based on the position information of the portable terminal, and determines whether the user is walking based on whether the moving speed is within a first range. The mobile terminal according to claim 1.   The display control unit continues the lighting period of the display device according to the operation when the walking determination unit determines that the user is not walking, and the calculated moving speed is within the second range. The mobile terminal according to claim 2, which is not. The movement information acquisition means acquires the step count information of the user,
The portable terminal according to claim 1, wherein the walking determination unit determines whether or not the user is walking based on whether or not the number of steps information of the user is a predetermined value or more. A sensor for detecting a predetermined movement associated with the movement of the user;
The display control unit turns on the display device according to an operation when the walking determination unit determines that the user is not walking, or when the sensor detects a predetermined movement accompanying the movement of the user. The mobile terminal according to claim 1, wherein the period is not continued.

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