JP4166743B2 - Terminal device and program - Google Patents

Description

  The present invention relates to a terminal device and a program.

  When a terminal device driven by a battery is used for a certain period of time and the battery is consumed and a predetermined electromotive force cannot be obtained, the battery is replaced in the primary battery, and charged in the secondary battery. Therefore, in the said terminal device, convenience is improved by providing the structure in which a user can confirm the remaining usable capacity of a battery, and rough estimation of usable time.

  In general, the remaining usable capacity of a battery is calculated by measuring the voltage of the battery. FIG. 4A is a graph showing the relationship between the battery voltage and the operating time when the battery that is stored at the maximum with respect to the allowable capacity is incorporated in a circuit that consumes a certain amount of power. Normally, the voltage of a battery gradually drops at the beginning of operation, and the voltage drops sharply after a certain operating time has elapsed. For this reason, by measuring the voltage value and providing data indicating the voltage value (V) obtained in advance and the remaining usable capacity (mAh) corresponding to the voltage value, the operation time when a certain amount of power is consumed is calculated. can do.

For example, assuming that the above-described technology is used, in a mobile phone driven by a battery, the terminal voltage of the battery is detected, and based on the voltage value and the usable time data corresponding to the terminal voltage of the battery, A mobile phone that displays a standby time is known (see Patent Document 1).
Japanese Patent Laid-Open No. 11-55372

However, with the recent multi-functionalization of mobile phones, users not only use call functions, but also create, view and send / receive e-mails, connect to the Internet, or functions of attached digital cameras, music appreciation, etc. It can be performed. Moreover, the usage method and usage frequency of a terminal device differ for every user.
Since each of the functions described above uses a different amount of power, the calculation of only the standby time with a relatively low power consumption or the callable time with a high power consumption requires the user to use an accurate available time. It was difficult to know.

  Accordingly, an object of the present invention is to provide a terminal device that more accurately calculates the time during which the battery can be used.

In order to solve the above problems, the invention according to claim 1 is characterized in that a determination unit that determines whether or not a voltage value of the secondary battery is equal to or higher than a predetermined voltage, and the determination unit includes the secondary battery. When it is determined that the voltage value of the second battery is equal to or higher than a predetermined voltage, a first battery remaining amount that detects the remaining amount of the secondary battery from the amount of charge to the secondary battery and the usage status of each of the plurality of operation functions Battery information indicating a usable total current value corresponding to the voltage value of the secondary battery when the voltage value of the secondary battery is determined to be less than a predetermined voltage by the amount detection means and the determination means calculating a second battery remaining amount detecting section for detecting the remaining amount of the secondary battery and a voltage value based on the secondary battery, the average working current value from usage of each of the plurality of operation functions a first calculation unit, a remaining amount of the secondary battery and the average use current value Characterized in that it comprises a second calculation means for calculating the remaining usable time, the by Zui.
Furthermore, a program for realizing the main functions shown in the invention described in claim 1 is provided to the computer (invention described in claim 4 ).

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the usage status for each of the plurality of operation functions is a cumulative use time of the last week for each of the plurality of operation functions. To do.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an input unit that inputs an operation instruction from a user, an instruction by the input unit, or the first remaining battery level detection unit or the And an instruction unit for instructing to calculate the remaining usable time when the remaining battery level detected by the second remaining battery level detection unit falls below a predetermined value.

According to the present invention, it is possible to calculate an accurate remaining usable time in line with the usage of the User chromatography The, it is possible to grasp more accurate usage time.

  Hereinafter, a portable information terminal 1 according to the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

  FIG. 1A shows a front appearance of the portable information terminal 1 which is a foldable camera-equipped mobile phone and is fully opened. As shown in FIG. 1A, in the portable information terminal 1, an upper lid 22 and a lower lid 23 are joined by a hinge portion 21 so that the upper lid 22 and the lower lid 23 face each other with the hinge portion 21 as an axis. Folding configuration. The upper cover 22 includes a main liquid crystal unit 15a that is a liquid crystal display that displays an upper image to the user, a speaker unit 16 that outputs sound, and a camera unit 19 that captures a still image or a moving image of the subject. The lower lid 23 includes a key input unit 17 that receives an operation instruction from a user, and a microphone 24 that inputs voice. The hinge portion 21 includes a switch (not shown) that detects a fully opened state or a closed state.

  FIG. 1B is a diagram showing the rear appearance of the portable information terminal 1 in a fully opened state. As shown in FIG. 1B, the upper cover 22 includes a sub liquid crystal unit 15 b that is a liquid crystal display that displays information to the user even when folded, and the lower cover 23 includes an antenna 25.

  FIG. 1C is a diagram illustrating an appearance of the portable information terminal 1 in a state in which the mobile information terminal 1 is in the process of shifting from the closed state to the open state, or in the process of being shifted in the reverse direction. The portable information terminal 1 is provided with a mechanism (not shown) that locks in the hinge part 21 in a fully opened state or a closed state by a spring or the like, and the user holds the upper lid 22 and the lower lid 23 to obtain a predetermined The lock is released by applying force, and the door is opened and closed through the state shown in FIG.

  FIG.1 (d) is a figure which shows the side surface external appearance of the portable information terminal 1 in the state closed completely. The portable information terminal 1 detects, for example, that it is closed by a switch that detects the above-described state inside the hinge unit 21, and turns off power to a predetermined part such as the main liquid crystal unit 15a.

  Next, the internal configuration of the portable information terminal 1 will be described with reference to FIG. As shown in FIG. 2, the portable information terminal 1 includes a control unit 11, a wireless communication unit 12, a transmission unit 13, a reception unit 14, a display unit 15, a speaker unit 16, a key input unit 17, a power supply unit 18, and a camera unit. 19 and a data storage unit 20, and are electrically connected to each other by a bus (not shown).

The control unit 11 includes a CPU (Central Processing Unit), an internal RAM (Random Access Memory), a ROM (Read Only Memory), a battery remaining amount detection unit 11a, and a usage time calculation unit 11b (not shown). In accordance with various control programs stored in the ROM using the predetermined area as a work area, the overall operation of the portable information terminal 1 is comprehensively controlled by sending control signals to the above-described units.
The battery remaining amount detection unit 11a calculates the remaining usable capacity in a battery remaining time check process described later. Also, the usage time calculation unit 11b as the second calculation means calculates the remaining usage time in the battery remaining time check process.
The timer unit 11c has a crystal oscillation circuit that always outputs a clock signal based on crystal oscillation at a constant frequency, and a clock circuit that counts the clock signal and counts the current time (none of which is shown). The date / time of the date / time / minute / second is measured and the elapsed time is measured, and the date data or time data is output.

  The wireless communication unit 12 is a circuit unit that is connected to the antenna 25 (see FIG. 1B) and controls the driving of the antenna 25, and is adopted by an external communication service provider according to an instruction input from the control unit 11. Communication processing including radio signal modulation / demodulation processing and terminal authentication processing based on a wireless communication scheme (for example, CDMA, PDC, GSM, etc.).

The transmitter 13 transmits the user's voice to the other party, converts the voice signal from the microphone 24 (see FIG. 1A) provided on the lower lid 23 into a voice digital signal, Output to the control unit 11.
The receiving unit 14 converts the received voice digital signal input from the control unit 11 into a voice analog signal and outputs the voice analog signal to the speaker unit 16 described later.

  The display unit 15 includes a display DSP (Digital Signal Processor) (not shown), a main liquid crystal unit 15a, and a sub liquid crystal unit 15b. The image signal input from the control unit 11 is converted by the DSP as an image output signal. The image is output to the main liquid crystal unit 15a or the sub liquid crystal unit 15b.

  The speaker unit 16 outputs music playback, a ring tone, or a voice at the time of reception based on the audio output signal output from the control unit 11 or the reception unit 14. Note that the speaker unit 16 may include a vibrator that generates vibration by rotating the weight eccentrically with a motor, and may vibrate and notify the device when a ring tone is output according to an instruction from the control unit 11.

  The key input unit 17 includes various keys such as numeric keys, character keys, and function keys for inputting operation instructions to the portable information terminal 1, a small stick-like pointing device, and the like. The user performs various operation instructions or settings for the portable information terminal 1 by operating the key input unit 17 while referring to the screen displayed on the main liquid crystal unit 15a.

The power supply unit 18 is a power supply circuit for supplying power supplied from a battery 18a described later. When the power supply unit 18 is connected to a commercial AC power supply (not shown), the power supply to each unit based on the commercial AC power supply is performed, and when the battery 18a is a secondary battery, the secondary battery is charged. Do. At the time of charging, the charge amount at the time of charging is integrated and the charge counter described later is updated from the charging time and current value.
Moreover, the power supply part 18 measures the voltage of the battery 18a according to the instruction | indication of the battery remaining charge detection part 11a, and outputs the voltage value to the battery remaining charge detection part 11a.

  The battery 18 a is a temporary battery such as an alkaline battery or a manganese battery, or a secondary battery such as a nickel / cadmium storage battery, a nickel / hydrogen storage battery, or a lithium ion battery, and supplies power to the power supply unit 18.

  The camera unit 19 is configured by an optical lens, an image sensor, and the like that are not particularly illustrated. The camera unit 19 outputs an image that enters the optical lens and forms an image on the image sensor to the control unit 11 according to an instruction from the control unit 11.

The data storage unit 20 is an electrically erasable and rewritable nonvolatile memory, and includes an EEPROM (Electrically Erasable and Programmable Read-Only Memory), a flash memory, or the like. The data storage unit 20 records a system program of the portable information terminal 1 according to an instruction from the control unit 11, various processing programs that can be executed on the system program, application programs, data processed by these programs, and the like. Erase the data.
Further, the data storage unit 20 secures a predetermined area as the individual data storage unit 20a, in which data relating to the charge amount, battery voltage-battery capacity, data relating to the average usage amount by function for each hour, usage counter table , One week table and accumulated usage time table are stored.

Here, various data stored in the individual data storage unit 20a will be described. First, FIG. 4B shows data on battery voltage-battery capacity, and FIG. 4C shows data on average usage by function per hour.
Data relating to battery voltage-battery capacity is data indicating a voltage value (V) and a remaining usable capacity (mAh) corresponding to the voltage value (V). Here, the upper limit voltage value is 4.30 V, which is an example of the voltage value at which the steep voltage drop in FIG. 4A is started. In addition, the upper limit of the voltage value is not particularly limited, and the configuration may be such that the upper limit is the voltage value when the maximum charge is stored with respect to the allowable capacity.
The average usage by function per hour is the average usage (mAh) per hour for various functions such as call waiting, voice call, mail function, incoming call / notification function, camera shooting function, and music playback function. It is data.

5A shows a usage counter table, FIG. 5B shows a one week table, and FIG. 5C shows a cumulative usage time table.
The usage counter table stores updated date information, a charging counter indicating the elapsed time after charging, and a counter indicating the usage time for each of the various functions described above, and the counter is stored in a predetermined cycle by the timer unit 11c. It is a table for measuring the usage time by being updated and recorded. The one week table is a table that records the usage time of various functions for each most recent day of the week. The cumulative usage time table is a table showing the cumulative usage time of various functions until it is returned to 0 by a predetermined process.

Next, an outline of calculation of the remaining usage time of the terminal device driven by a battery will be described with reference to FIG. FIG. 3A shows the main flow from the left to the right, and from the detection of the battery state to the final calculation of the remaining usage time.
First, in the control unit 11, the remaining battery capacity detection unit 11a calculates the remaining usable capacity (mAh) based on the detected battery voltage and the data relating to the battery voltage-battery capacity stored in the individual data storage unit 20a. To do. The average usage is calculated based on the usage counter table, the weekly table, the cumulative usage time table, and the average usage by function per hour stored in the individual data storage unit 20a. Then, the remaining usage time is calculated based on the calculated average usage amount and the remaining usable capacity.

  Specifically, when the detected battery voltage is 4.07 (V), 4.10 (V is data that sandwiches the detected value from the battery voltage-battery capacity data (see FIG. 4B). ) And 4.05 (v) usable capacity are referred to, and 530 (mAh), which is the remaining usable capacity of the detection value, is calculated by linear approximation (see FIG. 6A). Then, the usage rate by function is calculated from the cumulative usage time table (see FIG. 6B), and the average usage amount of 20.35 is calculated based on the usage rate by function and the average usage amount by function per hour. After (mAh) is calculated (see FIG. 6C), the remaining usage time of 26 hours and 2 minutes is calculated from the average usage amount and the aforementioned remaining usable capacity of 530 (mAh) (see FIG. 6). 6 (d)).

<Example 1>
Next, as Example 1, a usage time count process and a remaining battery time check process in which the control unit 11 counts the usage time from the state of the device will be described with reference to the flowcharts shown in FIGS.

First, the process of updating the accumulated usage time table from power ON will be described with reference to the flow chat shown in FIG. The control unit 11 sets the incoming standby state in response to a power-on instruction from the user or the like (step S11), and compares the date information in the usage counter table with the current date information from the time measuring unit 11c (step S12).
If it is determined in step S12 that they match (step S13: YES), the process proceeds to A as it is. When it is determined that they do not match (step S13: NO), the usage time for each function stored in the usage counter table is stored on the day of the week table based on the date information of the usage counter table (step S14) and updated. The accumulated usage time for each function is calculated from the information of the one-week table (step S15) and stored in the accumulated usage time table (step S16). Then, the usage counter table is reset (step S17), and then to A. To be migrated.

  Next, a process of counting the usage time from the state of the device will be described with reference to the flowcharts shown in FIGS.

  First, the control unit 11 turns on the standby counter and measures the standby in the usage counter table (step S18). After step S18, it is determined whether it is in the notification state by an incoming call or a timer function (step S19). If it is in the notification state (step S19: YES), the standby counter is set to OFF and the notification counter is set to ON ( Step S20) When the end of notification is detected (step S21: YES), the notification counter is turned off (step S22), and the notification is timed.

  In step S19, if there is no notification state (step S19: NO), it is determined whether a voice call is being made (step S23). If it is in a voice call state (step S23: YES), the standby counter is OFF. When the call counter is set to ON (step S24) and the end of the call is detected (step S26: YES), the call counter is turned off (step S27) and the call is timed.

  In step S23, when it is not in a voice call state (step S23: NO), it is determined whether it is in a state where mail is being transmitted / received (step S28). When it is in a mail transmission / reception state (step S28: YES), a standby counter is determined. Is set to OFF, the mail counter is set to ON (step S29), and when the end of the mail transmission / reception state is detected (step S31: YES), the mail counter is turned off (step S32), and the time of mail transmission / reception is measured. Is called. The mail transmission / reception state described above may include a mail creation / browsing state.

  If it is determined in step S28 that the mail transmission / reception state is not set (step S28: NO), it is determined whether the camera shutter is ON (step S33). If the camera shutter is ON (step S33: YES), the standby counter is OFF. The camera counter is set to ON (step S34), a series of imaging processes from image capture to compression processing of the captured image and recording of the compressed image are performed (steps S35 to 37), and the camera counter is turned OFF. (Step S38), the camera photographing is timed. Note that the time taken for camera photographing by the camera counter described above is not limited to the imaging processing associated with photographing, and may include a finder function state in which an image photographed by the camera unit 19 is displayed on the display unit 15. .

  In step S33, if the camera shutter is not ON (step S33: NO), it is determined whether music is being reproduced (step S39). If music is being reproduced (step S39: YES), the standby counter is OFF. When the music counter is set to ON (step S40) and the end of music playback is detected (step S42: YES), the music counter is turned OFF (step S43), and music playback is timed.

In step S39, when music is not played (step S39: NO), the presence or absence of key operation is detected (step S44), and when there is a key operation (step S44: YES), the remaining time check key operation is input. If so (step S45: YES), a battery remaining time check process described later is performed (step S46).
The determination of the remaining time check operation in step S45 is not limited to the key operation from the user, and may be performed at a predetermined cycle. Thereby, the battery remaining time can be constantly monitored and notified to the user.

  As described above, the processing of steps S18 to S47 shown in FIGS. 8 and 9 is performed for each function in the usage counter table.

  Next, the remaining battery time check process in step S46 will be described with reference to the flowchart shown in FIG.

The control part 11 detects a battery voltage (step S50), and determines whether it is more than a predetermined voltage value by step S51 as an instruction | indication means. Here, the predetermined voltage value indicates a voltage within a range of data relating to battery voltage-battery capacity stored in the individual data storage unit 20a. In the present embodiment, the battery remaining amount is small and a steep voltage drop is caused. It is assumed that the voltage value (see FIG. 4A) that can be calculated and the correspondence with the remaining capacity can be calculated clearly. However, the value is not particularly limited, and may be a value set in advance by a user operation.
For this reason, it is possible to notify the user of the warning and the remaining battery level by performing the process described later when the voltage is within the voltage value.
Further, the battery voltage-battery capacity data stored in the individual data storage unit 20a may include a portion that causes a gradual voltage drop.

When it is determined in step S51 that the voltage is equal to or lower than the predetermined voltage (step S51: NO), the processing of steps S52 to 58 is performed as in the specific example described with reference to FIG. The remaining usage time is calculated.
That is, the battery voltage-battery capacity data stored in the individual data storage unit 20a is read (step S53), and the remaining usable capacity at the detected voltage value is calculated (step S53). In this calculation, the value of battery voltage-battery capacity in data sandwiching the detection value may be approximated by a straight line, but may be approximated by a curve.
Then, the accumulated usage time table stored in the individual data storage unit 20a is read (step S54), the usage rate for each function is calculated (step S55), and the functions per hour stored in the individual data storage unit 20a are calculated. The different average usage is read (step S56), and the average usage based on the calculated usage by function and the average usage by function per hour read in step S57 as the first calculating means. The amount is calculated, and the remaining usage time is calculated from the average usage amount and the remaining usable capacity described above (step S58). Note that the calculation of the usage rate by function is not particularly limited, and may be performed by calculating individual usage rates when the functions operate in duplicate.

  Here, the data read in step S54 may be a cumulative usage time table and a usage counter table, and the function-specific usage rate may be calculated from the total value in step S55. In this case, since the calculation is performed including the usage counter table, the remaining usage time can be calculated according to the current situation.

  Further, the data read in step S54 is the usage time by function of a predetermined day of the week in the one week table referred to based on the current date information output in the time measuring unit 11c. The structure which calculates the usage rate according to function may be sufficient. In this case, the remaining usage time can be calculated according to the usage status for each day of the week.

After step S58, the calculated remaining usage time is displayed on the display unit 15 (step S59), and the process ends.
A display example of the remaining usage time in here shown in FIG 4. FIG 1 4 (a) is an example of displaying the remaining estimated operating time by hours and minutes, a function-specific usage calculated in step S55 in the main liquid crystal unit 15a. The display of the usage time may be days and hours.
FIG 1 4 (b) is an example of displaying the remaining estimated operating time, the estimated time of use of each function to be calculated from the remaining calculated available capacity and and functional average usage per hour in step S53 is there.
The display example in FIG. 1. 4, it is assumed in the main liquid crystal unit 15a, it may be a sub-liquid crystal unit 15b.

  As described above, the mobile information terminal 1 counts the usage time according to the state of the device, and the remaining battery time is reduced by comparing with a predetermined voltage in the remaining battery time check process. , The remaining usage time is displayed on the screen, and a warning to the user and a notification of the remaining usage time in accordance with the usage pattern of the user can be performed.

<Example 2>
Next, as a second embodiment, a schematic diagram and a diagram shown in FIG. 3B show a configuration for calculating the remaining usable capacity based on the charge amount and the estimated usage amount when the voltage is a predetermined voltage (step S51: YES). This will be described with reference to the flowchart shown in FIG.

  First, the outline of remaining usage time calculation is shown in FIG. FIG. 3B differs from the above-described configuration of FIG. 3A in calculating the remaining usable capacity, detects the charge amount, and stores the charge amount and the use stored in the individual data storage unit 20a. It is a figure which shows the structure which calculates remaining usable capacity from the data regarding time and the average usage-amount per hour.

Next, with reference to FIG. 11, the flowchart in a present Example is demonstrated.
When it determines with it being more than a predetermined voltage (step S51: YES), the control part 11 acquires the charge amount calculated by the power supply part 18 and stored in the separate data storage part 20a (step S60). Next, the accumulated usage time table, the usage counter table, and the average usage by function per hour stored in the individual data storage unit 20a are acquired (step S61), and the average usage time for each function after charging is calculated. The estimated usage consumed by each function is calculated from the average usage time for each function and the average usage by function per hour, and the estimated usage after charging, which is the total value, is calculated (step S62).
Then, the remaining usable capacity that is the amount obtained by subtracting the estimated usage amount from the charge amount is calculated (step S63).

  As described above, the portable information terminal 1 is configured to calculate the remaining usable capacity based on the charge amount and the estimated use amount calculated from the use time when the voltage is equal to or higher than a predetermined voltage. For this reason, even when the remaining usable capacity cannot be accurately calculated from the battery voltage at a predetermined voltage or higher due to, for example, the characteristics of the battery, the accurate remaining usable capacity can be calculated.

<Modification 1>
Next, as a modification of the first embodiment, a process in which the control unit 11 performs a count regarding the standby function and the camera shooting or music playback function in parallel will be described with reference to flowcharts shown in FIGS.

  The flowcharts shown in FIGS. 12 and 13 are modified examples after A in the flowcharts shown in FIGS. 7 to 10 described above. The notification state (step S19), the voice call state (step S23), and the mail transmission / reception state (step S28). ) Processing flow and camera shooting (step S33), music playback (step S39), and key operation (step S44) processing flow, and other functions other than the standby and communication functions And in parallel.

Specifically, the standby counter is turned on (step S118), and it is determined whether it is a notification state, a voice call state, or a mail transmission / reception state (steps S119, 123, 128). It moves to D as it is.
If it is determined that the state is one of the above states, the determined state is counted (steps S120, 124, and 129), and the counter is turned off and the standby counter is turned on when the state is finished. (Steps S122, 127, 132), and the process proceeds to D.

Then, from D, the camera shooting state, the music playback state, and the presence / absence of key operation are determined (steps S133, 139, 144).
Here, when it is determined that the camera is in the shooting state or the music playback state, counting is performed according to the determined state without turning off the standby counter (steps S134 and 140), and the end of the state is performed. The counter is turned off (steps S138 and 143), and the process returns to C.

  As described above, in the first modification, since the standby count and the count related to camera shooting or music playback are performed in parallel, there are processes that are generally performed in parallel with other processes such as standby of a mobile phone. Even in this case, it is possible to accurately calculate the remaining usage time.

  In the above embodiment, the cellular phone with a foldable camera is used. However, the present invention is not limited to this and may be a portable electronic device including a personal digital assistant such as a PDA. .

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the portable information terminal 1 which is a portable electronic device with a folding camera to which this invention is applied, (a) is a front external view in the open state, (b) is a back external view in the open state. (C) is a side perspective view, and (d) is a side view in a closed state. 2 is a block diagram schematically showing a functional configuration of a portable information terminal 1. FIG. It is a figure which shows the outline of calculation of the remaining usage time in the portable information terminal 1, (a) is a figure which shows the process of detecting a battery voltage and calculating remaining usage time, (b) is based on charge amount. It is a figure which shows the process of calculating remaining usage time. (A) is a graph which shows the relationship between time and electric power in the case of consuming constant electric power in the battery which is stored to the maximum with respect to the allowable capacity, and (b) is data on battery voltage-battery capacity. (C) is a table showing data related to average usage by function per hour. (A) is a usage counter table showing the usage time stored for each function, (b) is a one week table for recording the usage time of various functions for each recent day of the week, and (c) It is an accumulated use time table which records the accumulated use time of various functions. (A) is a calculation example of the remaining usable capacity, (b) is a calculation example of the usage rate by function based on the cumulative usage time table, and (c) is a calculation example of the average usage amount. Yes, (d) is an example of calculating the remaining usage time. 6 is a flowchart illustrating processing for counting usage time for each of various functions according to the first exemplary embodiment. 6 is a flowchart illustrating processing for counting usage time for each of various functions according to the first exemplary embodiment. 6 is a flowchart illustrating processing for counting usage time for each of various functions according to the first exemplary embodiment. 3 is a flowchart for explaining a remaining battery time check process according to the first embodiment. 6 is a flowchart for explaining a remaining battery time check process according to a second embodiment. 10 is a flowchart for describing processing for counting usage time for each of various functions in Modification 2. 10 is a flowchart for describing processing for counting usage time for each of various functions in Modification 2. (A) is a display example of the remaining estimated usage time and function-specific usage rate in the main liquid crystal unit 15a, and (b) is a display example of the remaining estimated usage time and function-based estimated usage time in the main liquid crystal unit 15a. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable information terminal 11 Control part 11a Battery remaining charge detection part 11b Usage time calculation part 11c Time measuring part 12 Wireless communication part 13 Transmission part 14 Reception part 15 Display part 15a Main liquid crystal part 15b Sub liquid crystal part 16 Speaker part 17 Key input part 18 Battery 18a Power supply unit 19 Camera unit 20 Data storage unit 20a Individual data storage unit 21 Hinge unit 22 Upper lid 23 Lower lid 24 Microphone 25 Antenna

Claims (4)

In a terminal device that has a plurality of operation functions and operates as a power source that is configured to be rechargeable ,
Determining means for determining whether the voltage value of the secondary battery is equal to or higher than a predetermined voltage;
When it is determined by the determination means that the voltage value of the secondary battery is equal to or higher than a predetermined voltage, the remaining amount of the secondary battery is determined from the amount of charge to the secondary battery and the usage status for each of the plurality of operation functions. First battery remaining amount detecting means for detecting the amount;
When the determination means determines that the voltage value of the secondary battery is less than a predetermined voltage, battery information indicating a usable total current value corresponding to the voltage value of the secondary battery and the secondary battery a second battery remaining amount detecting section for detecting the remaining amount of the secondary battery based on the voltage value of,
First calculation means for calculating an average use current value from the use situation for each of the plurality of operation functions;
Second calculating means for calculating a remaining usable time based on the average use current value and the remaining amount of the secondary battery;
A terminal device comprising:   The terminal apparatus according to claim 1, wherein the usage status for each of the plurality of operation functions is a cumulative use time of the last week for each of the plurality of operation functions. An input means for inputting an operation instruction from the user;
The remaining usable time is calculated when an instruction from the input unit or a remaining battery level detected by the first remaining battery level detecting unit or the second remaining battery level detecting unit falls below a predetermined value. Instruction means for instructing to do,
Terminal device according to claim 1 or 2, further comprising a. In a computer provided in a terminal device that has a plurality of operation functions and operates as a power source of a rechargeable secondary battery,
Determination means for determining whether the voltage value of the secondary battery is equal to or higher than a predetermined voltage;
When it is determined by the determination means that the voltage value of the secondary battery is equal to or higher than a predetermined voltage, the remaining amount of the secondary battery is determined from the amount of charge to the secondary battery and the usage status for each of the plurality of operation functions. First battery remaining amount detecting means for detecting the amount;
When the determination means determines that the voltage value of the secondary battery is less than a predetermined voltage, battery information indicating a usable total current value corresponding to the voltage value of the secondary battery and the secondary battery a second battery remaining amount detecting section for detecting the remaining amount of the secondary battery based on the voltage value of,
First calculation means for calculating an average use current value from the use situation for each of the plurality of operation functions;
Second calculating means for calculating a remaining usable time based on the average use current value and the remaining amount of the secondary battery;
A program to realize

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