JP5171745B2 - Information terminal equipment - Google Patents

Description

  The present invention relates to an information terminal device such as a mobile phone, a PDA (Personal Digital Assistant), and a personal computer.

  Conventionally, various controls for reducing power consumption are performed in information terminal devices such as mobile phones. For example, after the key operation is performed by the user, if the next key operation is not performed as it is, control of reducing the brightness of the display or turning off the display is performed.

  The shorter the time until the display is turned off after the key operation is performed, that is, the shorter the lighting time of the display, the lower the power consumption. On the other hand, if the lighting time is short, the display is likely to be extinguished only by the user interrupting the key operation for a while. For this reason, the key operation for returning the display must be frequently performed, and the convenience for the user is lowered.

  In view of user convenience, the information terminal device can be configured to set the display lighting time according to various modes such as a telephone mode and a schedule mode (see Patent Document 1). .

JP 2002-357683 A

  However, the lighting time required to prevent the user from feeling inconvenience can vary depending on the operation input status at that time, and can also vary depending on individual differences for each user. For this reason, even if it is set as the structure by which lighting time is set uniformly according to a mode as mentioned above, the problem of a user's convenience fall cannot fully be eliminated.

  This invention is made | formed in view of this subject, and it aims at providing the information terminal device which can reduce power consumption, suppressing a user's convenience fall.

The information terminal device according to the present invention sets an operation unit that performs a predetermined operation, an operation control unit that causes the operation unit to execute the predetermined operation for a predetermined time when an operation input is made, and the predetermined time. A time setting unit. Here, the time setting unit is configured to pass the specified time.
The predetermined time is set based on the frequency at which an operation input for returning to the predetermined operation is performed before a predetermined time elapses .
The information terminal device according to the present invention includes an operation unit that performs a predetermined operation, an operation control unit that causes the operation unit to execute the predetermined operation for a predetermined time when an operation input is made, and the specified time. A time setting unit for setting. Here, the operation unit is a display unit. The operation control unit reduces the luminance of the display unit or turns off the display unit after the lapse of the specified time. The time setting unit corresponds to a frequency at which an operation input for returning to the predetermined operation is performed until a predetermined time elapses after the luminance of the display unit is reduced or the display unit is turned off. To set the specified time.

  ADVANTAGE OF THE INVENTION According to this invention, the information terminal device which can reduce power consumption can be provided, suppressing a user's convenience fall.

  The effects and significance of the present invention will become more apparent from the following description of embodiments. However, the following embodiment is merely an example when the present invention is implemented, and the present invention is not limited to what is described in the following embodiment.

1 illustrates an external configuration of a mobile phone according to an embodiment. It is a block diagram which shows the whole structure of the mobile telephone which concerns on embodiment. It is a flowchart of the power saving control which concerns on embodiment. It is a flowchart of the number-of-returns measurement processing and specified time setting processing according to the embodiment. The table for preserve | storing the frequency | count N of return concerning embodiment is shown. It is a flowchart which concerns on the example of a change of the number-of-returns measurement process and regulation time setting process which concern on embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an external configuration of a mobile phone. FIG. 1 (a) is a front view of the mobile phone with the second cabinet opened, and FIG. 1 (b) is a side view of the same state. FIG. 2C is a cross-sectional view taken along the line AA ′ of FIG.

  The mobile phone includes a first cabinet 1 and a second cabinet 2. A key input unit 3 is disposed in the first cabinet 1. The key input unit 3 detects various operation inputs to the device.

  On the upper surface of the first cabinet 1, an operation key group 3 a constituting the key input unit 3 is arranged. The operation key group 3a includes four main keys 31, a direction key 32, an enter key 33, and twelve numeric keys 34. The key input unit 3 further includes a key input circuit 35 and a key backlight 36 (see FIG. 2), which will be described later.

  The main key 31 is a key for starting an application in various function modes (camera shooting mode, mail transmission / reception mode, Internet mode, etc.) and a key for starting and ending a telephone call. The key for ending the call also functions as an END key for ending the application. The direction key 32 is a key operated when a desired menu is selected from various menus displayed on the display screen, and the enter key 33 is a key for determining the selected menu. The numeric keypad 34 is a key for inputting characters (hiragana, katakana, alphabet), numbers, and symbols. The numeric keypad 34 mainly functions as a key for inputting characters and the like, but may function as another key such as a direction key depending on an application to be executed. A part of the numeric keypad 34 may be constituted by a QWERTY key or the like.

  A display 21 is arranged in the second cabinet 2. The display 21 includes a liquid crystal panel and a panel backlight that illuminates the liquid crystal panel as will be described later. The display 21 may be configured by an organic EL. A touch sensor 22 is arranged on the display screen side of the display 21. The touch sensor 22 has a transparent sheet shape, and the display screen of the display 21 can be seen through the touch sensor 22.

  The touch sensor 22 includes a first transparent electrode and a second transparent electrode arranged in a matrix, and a position on the display screen touched by the user by detecting a change in capacitance between the transparent electrodes. And a position signal corresponding to the position is output. Note that the touch sensor 22 is not limited to a capacitive touch sensor, and may be a resistive touch sensor, a pressure sensitive touch sensor, or the like.

  The second cabinet 2 is connected to the first cabinet 1 by a slide mechanism unit 4 so as to be slidable in the X-axis direction of FIG. As shown in FIG. 1C, the slide mechanism unit 4 is constituted by a guide plate 41 and a guide groove 42. The guide plate 41 is provided at both left and right end portions of the back surface of the second cabinet 2, and has a protrusion 41a at the lower end thereof. The guide groove 42 is formed on the side surface of the first cabinet 1 along the sliding direction (X-axis direction in FIG. 1). The protrusion 41 a of the guide plate 41 is engaged with the guide groove 42.

  When the cellular phone is closed, the second cabinet 2 is almost completely overlapped with the first cabinet 1 as indicated by a one-dot chain line in FIG. In this state (closed state), all the keys of the operation key group 3a are hidden behind the second cabinet 2. The second cabinet 2 can be slid (opened) until the guide plate 41 reaches the terminal position of the guide groove 42. When the second cabinet 2 is fully opened, as shown in FIG. 1A, all keys of the operation key group 3a are exposed to the outside.

  In a state where all the keys are hidden, an operation input to the mobile phone can be performed by the touch panel 22. At this time, an image of the soft key is displayed at a predetermined position on the display screen of the display 21.

  FIG. 2 is a block diagram showing the overall configuration of the mobile phone. In addition to the components described above, the cellular phone according to the present embodiment includes a CPU 100, a camera module 101, a video encoder 102, a microphone 103, an audio encoder 104, a key input circuit 35, a real-time clock (RTC) 105, a communication module 106, A memory 107, a backlight drive circuit 108, a key backlight 36, a video decoder 109, an audio decoder 110, a call speaker 111, an external speaker 112, a battery 113, and a power supply circuit 114 are provided.

  The camera module 101 includes an image sensor such as a CCD, generates an image signal corresponding to the captured image, and outputs the image signal to the video encoder 102. The video encoder 102 converts the imaging signal from the camera module 101 into a digital imaging signal that can be processed by the CPU 100 and outputs the digital imaging signal to the CPU 100.

  The microphone 103 converts the audio signal into an electric signal and outputs it to the audio encoder 104. The audio encoder 104 converts the audio signal from the microphone 103 into a digital audio signal that can be processed by the CPU 100 and outputs the digital audio signal to the CPU 100.

  The key input circuit 35 outputs an input signal corresponding to each key to the CPU 100 when each key of the operation key group 3a is pressed. The RTC 105 counts the current time and outputs it to the CPU 100.

  The communication module 106 converts an audio signal, an image signal, a text signal, and the like from the CPU 100 into a radio signal and transmits it to the base station via the antenna 106a. In addition, a radio signal received via the antenna 106a is converted into an audio signal, an image signal, a text signal, and the like and output to the CPU 100.

  The memory 107 includes a ROM and a RAM. The memory 107 stores a control program for giving a control function to the CPU 100. The memory 107 stores image data captured by the camera module 101, image data captured from the outside via the communication module 106, text data (mail data), and the like in a predetermined file format.

  The key backlight 36 illuminates each key of the operation key group 3a. The display 21 includes a liquid crystal panel 21a and a panel backlight 21b that supplies light to the liquid crystal panel 21a.

  The backlight drive circuit 108 supplies a voltage signal corresponding to the control signal from the CPU 100 to the key backlight 36 and the panel backlight 21b. The video decoder 109 converts the video signal from the CPU 100 into an analog video signal that can be displayed on the liquid crystal panel 21a, and outputs the analog video signal to the liquid crystal panel 21a.

  The audio decoder 110 converts the audio signal from the CPU 100 into an analog audio signal that can be output from the call speaker 111 and outputs the analog audio signal to the call speaker 111. The audio decoder 110 converts sound signals of various notification sounds such as a ring tone and an alarm sound from the CPU 100 into an analog sound signal that can be output by the external speaker 112, and outputs the analog sound signal to the external speaker 112. The call speaker 111 reproduces the audio signal from the audio decoder 110 as audio. The external speaker 112 reproduces a ring tone from the audio decoder 110.

  The battery 113 is for supplying electric power to the CPU 100 and other parts of the mobile phone other than the CPU 100, and is composed of a secondary battery. The battery 113 is connected to the power supply circuit 114.

  The power supply circuit 114 converts the voltage of the battery 113 into a voltage having a magnitude necessary for each component and supplies the voltage to each component. In addition, the power supply circuit 114 charges the battery 113 by supplying power supplied via an input unit (not shown) of an external power supply to the battery 113.

  The CPU 100 outputs a control signal to each unit such as the communication module 106, the video decoder 109, and the audio decoder 110 based on input signals from each unit such as the camera module 101, the microphone 103, the key input circuit 35, and the touch sensor 22. Execute call processing and various functional mode applications. The CPU 100 includes a timer unit 100a used for power saving control, which will be described later, as part of its function.

  In the mobile phone according to the present embodiment, an initial screen (menu screen) and a standby screen are displayed on the display 21 in the initial movement state. When an operation input using the key input unit 3 or the touch panel 22 is performed from such an initial movement state, an application corresponding to the operation input is executed.

  In the initial operation state or when an application is executed, the display 21 is normally lit with a steady luminance. However, since the power consumption of the display 21 is relatively large, in order to make the usage time of the battery 113 as long as possible, the luminance of the display 21 (panel backlight 21b) can be lowered or the panel backlight 21b or It is desirable to turn off the entire display 21 (the liquid crystal panel 21a and the panel backlight 21b). Therefore, in the present embodiment, power saving control described below is performed in order to reduce power consumption by the display 21 as much as possible.

  3 and 4 are flowcharts of power saving control according to the present embodiment. FIG. 3 is a flowchart of a main process related to power saving control. FIG. 4A is a flowchart of the return count measurement process related to power saving control. FIG. 4B is a flowchart of a specified time setting process related to power saving control. Hereinafter, the processing contents will be described with reference to the flowcharts of FIGS.

  When the process is started, the CPU 100 determines whether or not a key operation (operation input by a key) has been performed (S11). The key operation includes a soft key operation using the touch panel 22 in addition to the operation key group 3a. When a key operation is performed (S11: YES), the CPU 100 determines whether or not the display 21 is in an on state (S12). If the display 21 is in an on state (S12: YES), the time elapses when the key operation ends. Counting of time T is started (S13). The elapsed time T is counted by the timer unit 100a.

  Next, the CPU 100 determines whether or not a key operation has been performed (S14). If no key operation has been performed (S14: NO), the CPU 100 determines whether or not the elapsed time T has reached a specified time TR. (S15). The specified time TR is a time from when the previous key operation is performed to when the display 21 is turned off when the next key operation is not performed. The specified time TR is set in a specified time setting process described later.

  If the key operation is performed before the elapsed time T reaches the specified time TR (S14: YES), the process returns to step S13, and the CPU 100 starts counting the elapsed time T again. On the other hand, when the elapsed time T reaches the specified time TR without any key operation (S15: YES), the CPU 100 turns off the display 21. That is, the panel backlight 21b is turned off and the driving of the liquid crystal panel 21a is stopped (S16).

  In this manner, in this embodiment, when the state in which no key operation is performed continues for a while, the display 21 is turned off, so that power consumption is reduced. For this reason, the usable time of a battery becomes long.

  Thereafter, the process returns to step S11, and the CPU 100 determines whether or not a key operation has been performed.

  When the user performs the next operation input from the state where the display 21 is turned off, an arbitrary key is operated to return the display 21 first. If the CPU 100 determines that a key operation has been performed (S11: YES), the display 21 is in an off state at this time (S12: NO), so the display 21 is turned on (S17). Thereafter, the process proceeds to step S13 again.

  In step S16, the CPU 100 turns off the entire display 21, but only the panel backlight 21b may be turned off while the liquid crystal panel 21a is driven. Further, instead of completely turning off the panel backlight 21b, the power supplied to the panel backlight 21b may be reduced to reduce the luminance. Further, after the brightness of the panel backlight 21b is lowered, the panel backlight 21b may be turned off if there is no key operation for a certain time. Of course, when the panel backlight 21b is turned off, the driving of the liquid crystal panel 21a may be stopped together. Further, the time until the panel backlight 21b is turned off after the brightness of the panel backlight 21b is lowered may be set similarly to the specified time TR.

  Now, in parallel with such main processing, the return count measurement processing and the specified time setting processing are executed.

  First, the return count measurement process shown in FIG. The CPU 100 monitors whether or not the display 21 is turned off by the process of step S16 in FIG. 3, and determines that the display 21 is turned off (S21: YES), counts the elapsed time S since the display 21 is turned off. Is started (S22). The elapsed time S is counted by the timer unit 100a of the CPU 100.

  Next, the CPU 100 determines whether or not the display 21 is turned on again by the process of step S17 in FIG. 3 until the elapsed time S reaches a certain time, for example, 15 seconds (S23, S24).

  When the display 21 is turned off while the key operation is interrupted, the user performs an arbitrary key operation to immediately return the display 21 if a series of key operations are being performed. In this case, the display 21 is turned on before the elapsed time S reaches 15 seconds.

When the display 21 is turned on before the elapsed time S reaches 15 seconds (S24: YES), the CPU 100 sets the number of times, that is, the number of operation inputs for immediately returning the display 21 as the number N of times of return. Count ( S25 ).

  Thus, every time an operation input for immediately returning the display 21 is made, the number of times of return N is counted (S21 to S25).

  During this time, the CPU 100 determines whether the date has changed by acquiring the time from the RTC 105 (S26). If the date changes, the value of the return number N is stored in association with the date (S27), and the return number N is reset to zero (S28).

  In the memory 107, a table for storing the number N of return times corresponding to the date as shown in FIG. 5 is prepared. In this table, the number of return times N for a predetermined number of days, for example, 30 days, is stored. When data for 30 days is stored, the number N of new date restorations is overwritten in the first storage area. As a result, the return count N for 30 days from the current date is always stored in the table for each date.

  Next, the specified time setting process shown in FIG.

  The CPU 100 first sets the specified time TR to a default value, for example, 15 seconds (S31). The default value is used as the specified time TR until the first update is performed for the specified time TR. After the first update, the updated value is used as the specified time TR.

  Next, the CPU 100 determines whether or not the update time of the specified time TR has come (S32). The prescribed time TR is not updated until the number of restorations N for the prescribed number of days (30 days) is stored in the table of FIG. If the number of returns N for the specified number of days is stored, thereafter, the specified time TR is updated every day. In this case, for example, the timing when the date changes is set as the update timing.

  When determining that the update timing has come (S32: YES), the CPU 100 calculates the total value NT of the return count N for 30 days (S33). If the total value NT exceeds a predetermined upper limit reference value, for example, 100 times (S34: YES), the specified time TR is set to a relatively long time, for example, 20 seconds (S35). On the other hand, if the total value NT is a predetermined lower limit reference value, for example, 10 times or less (S36: NO), the specified time TR is set to a relatively short time, for example, 10 seconds (S38). If the total value NT is equal to or lower than the upper limit reference value and exceeds the lower limit reference value (S34: NO → S36: YES), the specified time TR is set to a time between the two times, for example, 15 seconds. (S37). Thus, the specified time TR is set to a longer time as the total value NT of the return times N increases, that is, as the frequency of the user immediately performing the return operation of the display 21 increases.

  If the specified time TR is thus updated, the new specified time TR is used in step S15 of FIG. Then, the display 21 is turned off based on the specified time TR.

  FIG. 6A is a flowchart according to another example of the return count measurement process, and FIG. 6B is a flowchart according to another example of the specified time setting process. In place of the return count measurement process in FIG. 4A, the return count measurement process in FIG. 6A can also be performed, and in place of the specified time setting process in FIG. A specified time setting process can also be performed. In the flowchart of FIG. 4, the update for the specified time TR is performed every time the date changes. However, in the flowcharts of FIGS. 6A and 6B, the specified time TR is updated every predetermined update period (for example, 10 days). Is updated.

  First, the return count measurement process shown in FIG.

  In this return count measurement process, similarly to the return count measurement process in FIG. 4A, when the display 21 is turned on again before the elapsed time S reaches 15 seconds, the return count N is counted (S41 to S45). ).

  Next, the CPU 100 determines whether or not the specified time TR has been updated by a specified time setting process described later (S46). When the specified time TR is updated, the CPU 100 resets the return count N to zero (S47), and newly starts the count of the return count N (S41).

  Next, the specified time setting process shown in FIG.

  The CPU 100 initially sets the specified time TR to a default value, for example, 15 seconds (S51). The default value is used as the specified time TR until the first update is performed for the specified time TR. After the first update, the updated value is used as the specified time TR.

  Next, the CPU 100 determines whether or not the update time of the specified time TR has come (S52). For example, the update timing is set so that the update is performed every time a predetermined update period, for example, 10 days elapses.

  When the CPU 100 determines that the update timing has come (S52: YES), the CPU 100 sets the return count N counted in the return count measurement process, that is, the return count N counted within the update period (10 days), as an upper reference value, for example, It is compared with 100 times and the lower limit reference value, for example, 10 times (S54, S56). If the return count N exceeds 100 (S54: YES), the specified time TR is increased from the previous specified time TR by a fixed time ΔT (for example, 1 second) (S55). On the other hand, if the return number N is less than 10 (S56: NO), the specified time TR is decreased from the previous specified time TR by a fixed time ΔT (for example, 1 second) (S58). Further, if the number N of return times is equal to or less than the upper limit reference value and exceeds the lower limit reference value (S54: NO → S56: YES), the previous specified time TR is not increased or decreased (S57). As described above, if the number of times of return N, that is, the frequency at which the user immediately performed the return operation of the display 21 becomes higher than a certain range, the specified time TR is increased, and the number of times of return N, that is, the user immediately returns the display 21. If the frequency of operation is lower than a certain range, the specified time TR is reduced.

  Although the present embodiment has been described above, the following operational effects can be achieved according to the present embodiment.

  According to the present embodiment, the display 21 (backlight 21b) is turned on until the specified time TR elapses from the previous key operation without the next key operation, and then turned off (or the brightness is reduced). ) At this time, the specified time TR is set according to the history of the key operation of the user after the display 21 is turned off, that is, the frequency of the key operation for relighting the display 21 immediately after the display 21 is turned off. If the frequency is high, it is determined that the time until the current display 21 is turned off is too short for the user, so the specified time TR is lengthened. On the other hand, if the frequency is low, it is determined that the current time until the display 21 is turned off is sufficiently long for the user and can be shortened a little, so the specified time TR is shortened.

  As described above, according to the present embodiment, the specified time TR is set in accordance with the key operation status of each user, so that the time for which the display 21 is kept on in a steady state is appropriate for each user. Therefore, it is possible to reduce power consumption while suppressing a decrease in user convenience.

  That is, according to the present embodiment, when an operation input is made, the operating unit performs a predetermined operation for a predetermined time set in advance, and based on the operation input for returning to the predetermined operation after the lapse of the predetermined time. A specified time is set. Since the specified time reflects the user's operation input for returning to the predetermined operation, the execution time of the predetermined operation by the operating unit can be appropriate for each user. Therefore, it is possible to effectively suppress the power consumption of the operating unit while suppressing a decrease in user convenience.

  Further, according to the present embodiment, the specified time is set based on the history regarding the time until the operation input for returning to the predetermined operation is performed after the specified time has elapsed. For this reason, the specified time reflects the history regarding the time until the operation input for returning to the predetermined operation is made. For example, when it is determined from this history that the specified time is short for the user, the specified time is extended. On the other hand, if it is determined from this history that the specified time is long for the user, the specified time is shortened. Therefore, it is possible to make the execution time of the predetermined operation by the operating unit appropriate for each user.

  Furthermore, according to the present embodiment, the operating unit is the display unit, and the luminance of the display unit is reduced or the display unit is turned off after the lapse of the specified time. In this case, the time until the display unit is turned off can be made appropriate for each user.

  Furthermore, according to the present embodiment, it is defined according to the frequency of the operation input for returning until the predetermined time elapses after the luminance of the display unit is reduced or the display unit is turned off. Time is set. Accordingly, the time until the display unit is turned off can be made more appropriate for each user.

  The embodiment of the present invention can be variously modified in addition to the above. For example, in the above-described embodiment, based on the number (frequency) of operation inputs for returning the display 21 until the fixed time elapses after the display 21 is turned off (after the specified time TR has elapsed). The specified time TR is set. However, the method for setting the specified time TR is not limited to this. For example, the time from when the specified time TR elapses until a return operation is input may be stored as a history, and the specified time TR may be set based on the total value or the average value of these times. In this case, the shorter the total value or the average value of the time until a return operation input is made, the shorter the current prescribed time TR is for the user, so the prescribed time TR is lengthened.

  Moreover, in the said embodiment, operation input is performed using each key of 3a of an operation key group, and the touchscreen 22. However, the present invention is not limited to this, and a configuration may be adopted in which operation input is performed by voice or vibration to the mobile phone.

  Moreover, in the said embodiment, although the display 21 is controlled by power saving control, it is not restricted to this, It is power saving with respect to action parts other than the display 21, for example, the touch sensor 22 and the key backlight 36. Control can also be applied. At this time, the touch sensor 22 may be controlled to be turned off at the same time as the display 21 (energization is stopped), but the touch sensor 22 is turned off after a predetermined time has elapsed after the display 21 is turned off. Such control may be used. Further, the time from when the display 21 is turned off until the touch sensor 22 is turned off may be set by the same method as the specified time TR.

  Furthermore, the present invention (power saving control) can be applied to an application in a camera mode. In this case, when the camera mode is activated and the camera module 101 is turned on under the control of the CPU 100, the video taken by the camera module 101 is displayed on the display 21 as a preview screen. At this time, if no operation input is made while the preview screen is activated, the preview screen is closed (camera mode ends), but the time until the end (preview time) is the operation to restore the camera mode performed after the end. It is set according to the input history. For example, the more frequently the return operation input is made immediately after the completion, the longer the preview time. With such a configuration, it is possible to suppress the preview screen from being displayed unnecessarily while suppressing a decrease in user convenience, and to reduce power consumption.

  In the above-described embodiment, the following power saving control may be performed in an application for setting a ringtone to further reduce the power consumption of the mobile phone. That is, when an operation input for listening to a ringtone selected by the user is made, the ringtone is output from the external speaker 112 for a predetermined output time under the control of the CPU 100. At this time, if a stop operation input is made during the output of the ringtone, the output of the ringtone is stopped, but the output time is set according to the history of the operation input for stopping the output. For example, the shorter the average time until the operation input for stopping the output is made, the shorter the output time. With such a configuration, it is possible to suppress the useless output of ringtones while suppressing a decrease in user convenience, and to reduce power consumption. This power saving control can also be applied when notification output by vibration is selected. In this case, the operating time of a vibration source (not shown) is set according to the history of operation input for stopping output.

  Furthermore, the information terminal device of the present invention is not limited to a mobile phone, and may be a PDA (Personal Digital Assistant), a personal computer, or the like.

  In addition, the embodiment of the present invention can be variously modified as appropriate within the scope of the technical idea shown in the claims.

3 Key input part 21 Display (actuation part, display part)
22 Touch sensor (actuator)
36 Key backlight (working part)
100 CPU (operation control unit, time setting unit)

Claims (2)

In the information terminal device,
An actuator that performs a predetermined operation;
When an operation input is made, an operation control unit that causes the operation unit to execute the predetermined operation for a predetermined time set in advance;
A time setting unit for setting the specified time,
The time setting unit sets the specified time based on a frequency at which an operation input for returning to the predetermined operation is performed until a predetermined time elapses after the specified time elapses.
An information terminal device. In the information terminal device,
An actuator that performs a predetermined operation;
When an operation input is made, an operation control unit that causes the operation unit to execute the predetermined operation for a predetermined time set in advance;
A time setting unit for setting the specified time,
The operating part is a display part,
The operation control unit reduces the brightness of the display unit after the lapse of the specified time or turns off the display unit,
The time setting unit corresponds to a frequency at which an operation input for returning to the predetermined operation is performed until a predetermined time elapses after the luminance of the display unit is reduced or the display unit is turned off. To set the specified time,
An information terminal device.

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