JP4634346B2 - Terminal device - Google Patents

Description

  The present invention relates to a terminal device that can use a solar battery charged with power generated by a photovoltaic power generation panel as a drive power source, and more particularly to a terminal device suitable for use in a mobile phone terminal or the like.

  Conventionally, in order to improve mobility, a solar power generation panel in which a large number of solar cells are arranged and a battery charged with power generated by the solar power generation panel are provided as a power device, and the mobile phone supplies power to a load. The terminal is known.

  By the way, in the apparatus provided with the above-mentioned electric power apparatus, the technique for aiming at the improvement of usability has been proposed conventionally, for example, the technique for displaying the charge completion time (for example, refer to Patent Document 1), and the storage battery is excessive. Technology for realizing a display device with high power visibility and power-saving effect that emits light according to the brightness around the display device and the amount of power generation without applying a load (for example, see Patent Document 2), communication when a communication terminal device is not used A technique (for example, see Patent Document 3) that can significantly reduce power consumed by a terminal device is known.

Japanese Patent Laid-Open No. 1-206846 JP 2002-189450 A Japanese Patent Laid-Open No. 8-223311 JP 2003-224892 A JP 2002-55628 A Published JP-A-8-223651

However, according to the portable terminal described above, the cell size is limited due to the structure, and the solar cell cannot cover a sufficient amount of power generation under all circumstances. Therefore, care for extending the life of the battery has been required.
On the other hand, in order to obtain a sufficient amount of power generation, there is no choice but to deal with an increase in cell size.

Furthermore, depending on the amount of sunlight, it is unclear how long charging will be completed. If the amount of power generation is small, it is necessary to manually switch to the power saving mode as disclosed in Patent Document 2. It was very annoying.
Also, if you want to make an emergency call when the remaining battery level is low (low battery status), you cannot know information such as how long you can use it after charging it, so it is not convenient. Met.

  The object of the present invention is to inform the user of the time required for charging based on the amount of sunlight, and to provide a necessary amount of power generation without increasing the cell size of the photovoltaic panel by building an environment in which the terminal can be used efficiently. Another object is to provide a terminal device that can provide convenience to the user.

The terminal device of the present invention includes a display unit, a solar cell, a battery charged by the solar cell, a first detection unit that detects a power generation amount of the solar cell, and a first unit that detects a remaining amount of the battery. When the amount of electric power consumed is different based on the setting state relating to the operation of the two detection means and the operation of the display means or other built-in electronic components whose settings can be changed , the display means or the other The third detection means for detecting the amount of power consumed by the built-in electronic component as the power consumption, the power generation amount of the solar cell detected by the first detection means, and the detection by the second detection means Calculation means for calculating a charging time required to drive a predetermined function of the device based on the remaining amount of the battery and the power consumption detected by the third detection means, The display means Calculated for displaying the charging time.

Preferably, the remaining amount of the battery detected by the second detection unit is equal to or less than a first predetermined value in a state in which communication is performed by the communication unit and the communication unit that communicates with another terminal device. Control means for setting a stop mode for stopping communication by the communication means when it is determined that

Preferably, when the stop mode is set, the control unit cancels the stop mode when detecting an input of a specific key included in the terminal device.

Preferably, the predetermined function is a call function, and the display means is configured such that the power generation amount of the solar cell detected by the first detection means and the remaining battery detected by the second detection means. The available call time calculated based on the amount and the power consumption detected by the third detecting means is displayed.

Preferably, the control means determines that the remaining amount of the battery detected by the second detection means is greater than the first predetermined value and less than or equal to a second predetermined value. Then, the setting state relating to the operation of the display means or the operation of other built-in electronic components is set to a power saving mode in which the amount of consumed power is changed .

Preferably, the setting state relating to the operation of the display means or the operation of other built-in electronic components is input and acquired in advance by the user .

  According to the present invention, by constructing an environment that informs the user of the required charging time based on the amount of sunlight, the necessary power generation amount can be provided without increasing the cell size of the photovoltaic panel, and the user can be provided with convenience. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an internal configuration of a terminal apparatus according to an embodiment of the present invention. Here, a mobile phone terminal is exemplified as the terminal device.

  In FIG. 1, a mobile phone terminal uses a control unit 1 as a control center, an RF (Radio Frequency) circuit unit 2, an audio processing unit 3, a storage unit 4, an operation unit 5, an image processing unit 6, and a main unit. An LCD (Liquid Crystal Display Device) 7, a sub LCD 8, an imaging unit 9 including a CCD (Charge-coupled device) sensor, and a power supply circuit unit 10 are included.

The RF circuit unit 2 performs high-frequency modulation on data transmitted via the connected mobile phone antenna 20 and transmits it as radio waves, or detects radio waves received via the mobile phone antenna 20 to acquire data. It operates as a communication means as a configuration requirement of the present invention for outputting to the control unit 1 and performing communication with other terminal devices.
In addition, the RF circuit unit 2 receives a radio wave for current position positioning received via a connected GPS (Global Positioning System) antenna 21 and outputs the received radio wave to the control unit 1.

  The audio processing unit 3 generates audio data from the audio signal collected by the connected microphone (microphone) 22 and outputs the audio data to the control unit 1 or generates an audio signal from the audio data output by the control unit 1 And output via the connected speaker 23.

  In the storage unit 4, a program read from the control unit 1 and executed and work data are allocated and stored.

  The operation unit 5 detects that the key switch including the transmission key has been pressed by the user, recognizes the data, and outputs the data to the control unit 1.

The image processing unit 6 converts the image information generated by the control unit 1 into a display signal and displays it on the main LCD 7 or the sub LCD 8.
The image processing unit 6 also generates image information from the image signal captured and captured by the imaging unit 9 and outputs the image information to the control unit 1.

A battery 24 and a solar battery 25 are connected to the power supply circuit unit 10, and the power supply circuit unit 10 detects the remaining battery power or power consumption of the battery 24 under the control of the control unit 1. The power generation amount of the battery 25 is detected and control such as charging control is performed.
In addition, when it is determined that the remaining amount of the battery 24 is equal to or less than the first predetermined value, the control unit 1 based on the detected power generation amount of the solar cell 25 and the detected power consumption amount, It operates as a control means for calculating a charging time required for driving the connected load for a predetermined time and displaying the calculated charging time as an image.

  Here, the load refers to various functions realized by the peripheral circuit blocks 2, 3, 5, 6 connected to the control unit 1, such as a telephone call (including communication), a main LCD display (sub LCD display), and photographing. , Key (operation unit 5) means one used by at least one of illumination, key operation sound, vibrator motor, and the like.

  FIG. 2 is a diagram cited for explaining the cell shape of the solar battery 25 shown in FIG. 1 and the details of the bus line.

As is well known, the solar cell 25 has a function of converting solar energy into electric energy, and is connected in series to obtain desired power as shown in FIGS. 2 (a) and 2 (b). A predetermined number of solar cells 251a to 251n (solar power generation panel 250) are mounted, and the power generated in these solar cells 251a to 251n is supplied to the bus line 252 via a blocking diode (not shown). Configured.
The bus line 252 and the electrodes of the solar cells 251a to 251n are joined by melting solder.

Here, the power generation amount of the solar battery 25 will be briefly described. If solar energy during fine weather a plane perpendicular to the sunlight in the earth 1 kW / m @ 2, and the computational this number is needed use. Direct light is treated as the same value in every region on the earth.
The conversion efficiency of solar cells is currently about 15% to 21%. If it is a solar cell of 4.5 cm × 4 cm = 0.018 m 2, when the conversion efficiency is 18%, the generated power is 0.324 W (1 kW / m 2 × 0.0018 m 2 × 0.18 = 0. 324W).

By the way, the solar battery cell mounted on the mobile phone is set to output a voltage of 0.5 V with one solar battery cell, for example, and the current value increases in proportion to the size of the solar battery cell. It has become a relationship.
In addition, since the voltage of the battery 24 used in the cellular phone is 3.7 V, the above-described solar cells are connected in series to gain voltage, and are directly connected to the battery 24.
Thus, an output of 4V or 4.5V can be obtained as a set voltage by connecting 8 to 9 solar cells in series. When the above 4.5 cm × 4 cm cells are set to 5 solar cells 5 mm × 4 cm × 9, a current of 0.072 A (72 mA) can be obtained at 4.5V.

  Here, the influence of the solar cell 25 due to the weather will be briefly described. In general, if the clear weather is 100%, it is said that the cloudy weather is about 40% and the rainy weather is 10%. When simply converted into a current value, if it is 72 mA in fine weather, it is 28.8 mA in cloudy weather and 7.2 mA in rainy weather.

By the way, the amount of power generation in the weather is highly variable in the upper body of the sky, and it is difficult to express it only in relation to the amount of power generation and the weather. In addition, the amount of light reaching the solar cell is reduced by reflection that occurs when the solar cell 25 of the mobile phone is hidden in the shade or the angle of incident light becomes shallow.
Therefore, the user can determine how much power can be generated in the current environment to improve the use conditions of the mobile phone or to give up receiving light from sunlight.

FIG. 3 is a block diagram showing the function of the internal configuration of the control unit 1 shown in FIG. In FIG. 3, blocks with the same numbers as the blocks shown in FIG. 1 are blocks having the same names and functions as the blocks shown in FIG.
As shown in FIG. 3, if the internal configuration of the control unit 1 is functionally divided, the power generation amount detection unit 11, the remaining battery level detection unit 12, the current consumption detection unit 13, and the main control unit 14 It is divided into.

The power generation amount detection unit 11 functions as a first detection unit that detects the power generation amount of the connected solar battery 25 and outputs it to the main control unit 104, and the battery remaining amount detection unit 12 is operated by the solar cell 25. It functions as second detection means for detecting the remaining amount of the battery 24 to be charged and outputting it to the main control unit 14.
On the other hand, the current consumption detector 13 functions as a third detector that detects the power consumed by the connected load 30 and outputs the detected power to the main controller 14.

The main control unit 14 functions as means for calculating the power generation amount of the solar cell 25 detected by the power generation amount detection unit 11 and displaying an image of the power generation state or the time required for the battery 24 to be fully charged.
When the main control unit 14 determines that the remaining amount of the battery 24 detected by the battery remaining amount detection unit 12 is equal to or less than the first predetermined value, the main control unit 14 detects the solar cell 25 detected by the power generation amount detection unit 11. Based on the power generation amount and the power consumption detected by the current consumption detector 13, the charging time required for driving the load 30 for a predetermined time may be calculated, and the calculated charging time may be displayed as an image. Function.

  The main control unit 14 further stops emergency data reception during data communication when it is determined that the remaining amount of the battery 24 detected by the remaining battery amount detection unit 12 is equal to or less than a first predetermined value. Set to the mode, or when it is determined that the remaining amount of the battery 24 detected by the remaining battery amount detection unit 12 is equal to or less than a second predetermined value that is larger than the first predetermined value. It also functions as a control means for setting the power saving mode to reduce the power consumption of 30.

  Therefore, the main control unit 14 includes a battery remaining amount threshold table 141, a calculation unit 142, a screen information generation unit 143, an emergency communication mode setting unit 144, a power saving mode setting unit 145, and an environment information setting table 146. And a mode control unit 147.

In the battery remaining amount threshold table 141, thresholds relating to the remaining amount of the battery 24, that is, the first predetermined value and the second predetermined value described above are set in advance. These threshold values vary depending on the operation state of the mobile terminal, and the set values are arbitrary.
The calculation unit 142 is supplied with the output of the battery remaining amount detection unit 12, the output of the power generation amount detection unit 11, and the output of the current consumption detection unit 13 as inputs, and the remaining amount of the battery 24 detected by the battery remaining amount detection unit 12 is The power generation amount of the solar battery 25 detected by the power generation amount detection unit 11 and the current consumption detection unit 13 detected when it is determined that it is equal to or less than the threshold value (first predetermined value) set in the amount threshold value table 141. Based on the power consumption, the charging time required to drive the load 30 for a predetermined time is calculated, and the screen information generation unit 143, the emergency communication mode setting unit 144, and the power saving mode setting unit 145 are controlled.

  The screen information generation unit 143 selects image information prepared in advance based on the value calculated by the calculation unit 142 and outputs the selected image information to the main LCD 7 or the sub LCD 8 as display means for display.

  The emergency call mode setting unit 144 is a first in which the remaining battery level of the battery 24 detected by the remaining battery level detection unit 12 is set in the remaining battery level threshold table 141 based on the output of the calculation unit 142 during data communication. When it is determined that the value is equal to or less than the predetermined value, the emergency communication mode in which data reception is stopped is set, and the mode control unit 147 is driven.

  The power saving mode setting unit 145 also has a first predetermined value in which the remaining battery level of the battery 24 detected by the remaining battery level detection unit 12 is set in the remaining battery level threshold table 141 based on the output of the calculation unit 142. When it is determined that it is equal to or less than the second predetermined value that is larger, the power saving mode for reducing the power consumption of the load 30 is set and the mode control unit 147 is driven.

  In the environment information setting table 146, the power saving items at the time of setting the power saving mode, which are input and acquired in advance by the user, for example, lower the brightness of the main LCD 7 or the sub LCD 8 display, display OFF of the sub LCD 8, key illumination OFF, key Environment information including control items such as operation sound OFF is stored. The environmental information may be at least one of these, or any other combination of information.

  The mode control unit 147 controls the load 30 according to the emergency communication mode or the power saving mode set by the emergency communication mode setting unit 144 or the power saving mode setting unit 145.

In the emergency communication mode, the data reception function is stopped, and further, a callable (standby) time is displayed on the main LCD 7 or the sub LCD 8. In this case, the display function and a key for canceling the emergency communication mode are displayed. In addition to the minimum necessary functions such as the detection function of pressing of, the functions of the portable terminal are turned off.
In the power saving mode, the control items stored in the environment setting information table 146 (decrease the brightness of the main LCD 7 or sub LCD 8 display, display OFF of the sub LCD 8, key illumination OFF, key operation sound OFF, etc.) Control according to These controls by the mode control unit 146 are based on environmental information input in advance by the user.

(Embodiment 1)
FIG. 4 is a diagram cited for explaining the operation of the portable terminal device according to the first embodiment of the present invention. Specifically, the flow of processing by the control unit 1 for displaying the state of charge of the solar battery 25 is shown in a flowchart. FIG. 5 shows an example of screen display (image data A to E) prepared in advance according to the state of charge.
Hereinafter, the operation of the control unit 1 for displaying the charged state of the solar cell 25 will be described in detail with reference to FIGS. 4 and 5.

First, the power generation amount detection unit 11 detects the power generation amount (charging current) of the solar cell 25 by irradiation with sunlight (S401), and when the charging current is output (S402 “Yes”), the current value Is output to the main control unit 14.
The above-described data relating to the power generation amount is supplied to the calculation unit 142 of the main control unit 14, and the calculation unit 142 is shown in FIG. 5 via the screen information generation unit 143 when the charging current is 0 (S402 “No”). Control is performed to selectively display the image data E (S403).

On the other hand, when the power generation amount is detected (S402 “Yes”), the calculation unit 142 determines, for example, whether or not the charging current is 72 mA or more set as the determination threshold (S404).
If it is determined that the charging current is 72 mA or more (S404 “Yes”), the calculation unit 142 controls the screen information generation unit 143 to selectively output the image data A (S405). When it is determined that the charging current is 72 mA or less (S404 “No”), the calculation unit 142 further determines whether the charging current is 28.8 mA or more (S406).

When it is determined that the charging current is 28.8 mA or more (S406 “Yes”), the calculation unit 142 controls the screen information generation unit 143 to selectively output the image data B (S407). When it is determined that the current is 0.8 mA or less (S406 “No”), the calculation unit 142 further determines whether or not the charging current is 7.2 mA or more (S408).
Here, when it is determined that the charging current is 7.2 mA or more, the calculation unit 142 controls the screen information generation unit 143 to selectively output the image data C (S409), and is 7.2 mA or less. If it is determined, control is performed to selectively output the image data D (S410).

The image data A to E described above are prepared in advance in the storage unit 4, for example, selected by the screen information generation unit 143, and displayed on the main LCD 7 or the sub LCD 8.
Moreover, both the above-described determination thresholds of 28.8 mA and 7.2 mA indicate charging current values corresponding to the amount of power generation in consideration of the influence of the weather of the solar battery 25, and when the clear sky is 72 mA, This is the amount of electricity generated during rainy weather.

According to the first embodiment described above, it is possible to make the user recognize that the amount of power generation varies greatly depending on the amount of solar radiation, or to recognize the function that can be used in that situation and the available time for that function. The charging state (power generation amount) is displayed in four levels, for example, “Excellent”, “Good”, “Yes”, “No”, or the time until the battery 24 is fully charged is displayed. Thus, the user can recognize the power generation state of the solar battery 25.
In addition, the level display described above may be replaced with a percentage display. Further, the time display until full charge may be substituted, but at this time there is no particular problem in the case of stable sunny weather, cloudy weather, etc., but when the weather changes every moment, for example, 5 hours It is desirable to calculate and display an average value every minute).

Here, only the power generation amount (charging current) is set as the determination threshold. However, when the power generation amount is detected, the current consumption of the load 30 is also detected by the current consumption detection unit 13 to determine the difference between the power generation amount and the power consumption amount. It may be a threshold value.
At this time, the calculation unit 142 is necessary for driving the load 30 for a predetermined time based on the power generation amount of the solar battery 25 detected by the power generation amount detection unit 11 and the power consumption detected by the current consumption detection unit 13. The screen information generation unit 143 is controlled to calculate the charging time and display the charging time as an image.
Further, information defined about the correspondence between the difference between the amount of power generation and the power consumption and the charging time is stored in the storage unit 4 in advance, and the same effect can be obtained even when the calculation unit 142 refers to this information.

(Embodiment 2)
FIG. 6 is a diagram quoted for explaining the operation of the mobile terminal device according to the second embodiment of the present invention. Specifically, the flow of the switching process to the power saving mode and the emergency communication mode by the main control unit 14 is shown in the flowchart. FIG. 7 is a diagram illustrating an example of a screen display of a communicable time prepared in advance in the emergency communication mode.
Hereinafter, the flow of the switching process to the power saving mode and the emergency communication mode by the main control unit 14 will be described in detail with reference to FIGS. 6 and 7.

In addition to obtaining the power generation amount by the solar cell 25 and the power consumption amount of the load 30 as input information, the main control unit 14 receives the remaining amount α of the battery 24 from the battery remaining amount detection unit 12. It is supplied as information (S601).
First, the calculation unit 142 refers to threshold value data β (for example, a value of a low battery state) relating to the remaining battery level stored in the remaining battery level threshold table 141, and the battery 24 detected by the remaining battery level detection unit 12. Is compared with the above-described threshold value β (first predetermined value) (S602). Here, when it is determined that the remaining amount of the battery 24 is larger than the threshold β (S602 “α> β”), the remaining amount of the battery 24 and the previous amount stored in the remaining battery threshold table 141 It is compared with a threshold value γ (second predetermined value) that is larger than the threshold value β, for example, half the value at full charge (S603). Here, the threshold value γ is a half value when fully charged, and the value of the threshold value γ varies depending on the design conditions of the mobile phone.

Here, when it is determined that the remaining battery charge α is less than half of the full charge (S603 “α ≦ γ”), the calculation unit 142 activates the power saving mode setting unit 145 and shifts to the power saving mode. Control to do this is executed (S604).
At this time, the mode control unit 147 refers to the environment information setting table 146, and is previously set and input by the user. The load 30 is controlled in the power saving mode according to a control item for reducing power consumption, such as key operation sound OFF.
When it is determined in step S603 that the remaining amount α of the battery 24 is more than half of the fully charged state (S603 “α> γ”), the mode control unit 147 controls the load 30 in the normal mode. To do.

On the other hand, when it is determined in step S602 that the remaining battery charge α is equal to or less than the threshold β (S602 “α ≦ β”), the calculation unit 142 activates the emergency communication mode setting unit 145 to enter the emergency communication mode. Execute control for transition.
That is, the mode control unit 147 performs emergency communication mode setting for stopping the data reception function (S605).
Further, as shown in FIGS. 7A, 7B, and 7C, the remaining call or e-mail enabled (standby) time is displayed on the main LCD 7 or the sub LCD 8 (S606). At this time, the functions of the portable terminal are turned off in addition to the minimum necessary functions such as a display function and a key press detection function for canceling the emergency communication mode.

The emergency communication mode described above is canceled when it is detected that the call key is pressed (S607, S608). At this time, when the user learns how much charging time is required depending on the sunshine level, the usability is improved.
The above-mentioned screen display gives the user an indication as to how long they can wait and how long they can talk, so it is possible to determine the current situation and whether or not to use the currently charged mobile phone. . In addition, as shown in FIGS. 7D and 7E, the available call time may be simply displayed (direct display or indirect display using icons).

  According to the second embodiment described above, the load on the user is reduced by detecting the remaining amount of the battery 24 and the amount of power generated by the solar cell 25 and automatically shifting to the power saving mode. In addition, for example, the life of the battery 24 can be extended by reducing the luminance of the liquid crystal or adding restrictions such as key illumination or turning off the key operator.

In addition, the remaining amount of the battery 24 is reduced, and by automatically detecting the remaining amount of the battery 24 and the amount of power generated by the solar cell 25, the state is displayed according to the remaining amount of the battery 24. By displaying, for example, “1 minute call available: 10 minutes standby”, “3 minute call available: 1 hour standby”, etc., information on whether or not it is possible to wait can be provided to the user as a judgment material. .
Further, by displaying or selecting and displaying the mail availability time etc. in parallel, it is possible to reliably execute the mail communication even when the other party is busy or refuses the incoming call. The transition to the “emergency communication” mode can also be manually selected by the user.

The main control unit 14 shown in FIG. 3 is configured by, for example, a microcomputer and implements the functions of the terminal device of the present invention by sequentially reading and executing a program recorded in a memory (ROM) built in the microcomputer. It shall be.
At this time, each of the power generation amount detection unit 11, the remaining battery level detection unit 12, and the current consumption detection unit 13 is connected to an input port (not shown) of the microcomputer, and the detected data is taken into the microcomputer. It is assumed that the remaining battery threshold table 141 and the environment information setting table 146 are allocated and stored in a memory (RAM) built in the microcomputer.

It is a block diagram which shows the internal structure of the terminal device concerning embodiment of this invention. It is the figure quoted in order to demonstrate the cell shape of the solar cell shown in FIG. 1, and the detail of a bus line. It is the block diagram which expanded and showed the function of the internal structure of the control part shown in FIG. 5 is a flowchart cited for explaining the operation of the mobile terminal device according to the first embodiment. It is a figure which shows the example of the screen display prepared beforehand by the charge condition. 6 is a flowchart cited for explaining the operation of the mobile terminal device according to the second embodiment. It is a figure which shows the example of the screen display of the communicable time prepared beforehand in emergency communication mode.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Control part, 2 ... RF circuit part, 3 ... Audio | voice processing part, 4 ... Memory | storage part, 5 ... Operation part, 6 ... Image processing part, 7 ... Main LCD, 8 ... Sub-LCD, 9 ... Imaging part, 10 ... Power supply circuit unit 11 ... Power generation amount detection unit 12 ... Battery remaining amount detection unit 13 ... Current consumption detection unit 14 ... Main control unit 24 ... Battery 25 ... Solar cell 30 ... Load 101 ... Power supply switching control , 141 ... Battery remaining threshold table, 142 ... Calculation unit, 143 ... Screen information generation unit, 144 ... Emergency communication mode setting unit, 145 ... Power saving mode setting unit, 146 ... Environment information setting table, 147 ... Mode control unit .

Claims (8)

Display means;
Solar cells,
A battery charged by the solar cell;
First detection means for detecting the power generation amount of the solar cell;
Second detecting means for detecting the remaining amount of the battery;
When the power consumption is different based on the setting state relating to the operation of the display means or the operation of other built-in electronic components whose settings can be changed, the display means or the other built-in electronic components are consumed according to the setting state. a third detecting means for detecting the amount of power that you are as power consumption,
Based on the power generation amount of the solar cell detected by the first detection means, the remaining amount of the battery detected by the second detection means, and the power consumption detected by the third detection means. And a calculating means for calculating a charging time required for driving a predetermined function of the own device,
The terminal device displays the calculated charging time. The third detection means further detects the amount of power consumed by the predetermined function as the amount of power consumption,
The terminal device according to claim 1, wherein the calculating unit calculates a charging time required to continue driving the predetermined function for a predetermined time. The said calculating means calculates the said charge time, when it determines with the remaining amount of the battery detected by the said 2nd detection means being below a 1st predetermined value. The terminal device according to 2. Communication means for communicating with other terminal devices;
In a state where communication is performed by the communication unit, communication by the communication unit is stopped when it is determined that the remaining amount of the battery detected by the second detection unit is equal to or less than a first predetermined value. Control means for setting the stop mode to
The terminal device according to claim 1, further comprising: In the case where the stop mode is set,
The control means includes
The terminal device according to claim 4, wherein the stop mode is canceled when an input of a specific key provided in the terminal device is detected. The predetermined function is a call function,
The display means includes a power generation amount of the solar cell detected by the first detection means, a remaining battery level detected by the second detection means, and a power consumption detected by the third detection means. The terminal device according to claim 2, wherein the available call time calculated based on the amount is displayed. The control means includes
When it is determined that the remaining amount of the battery detected by the second detection means is greater than the first predetermined value and less than or equal to the second predetermined value, the operation of the display means or other The terminal device according to claim 4 or 5, wherein the setting state related to the operation of the built-in electronic component is set to a power saving mode for changing so as to reduce an amount of consumed electric power. The terminal device according to any one of claims 1 to 7, wherein a setting state relating to an operation of the display unit or an operation of another built-in electronic component is input and acquired by a user in advance.

Images