JP2005210192A - Terminal, and battery state warning method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal capable of raising accurate warning on deficiency in the capacity of a battery in response to the utilization time of the user, in order to avoid the occurrence of a worn out battery midway of the use of the terminal. <P>SOLUTION: At interruption of power in a mobile TV receiver 10, a CPU 11 calculates TV utilization time for the power OFF time and decides whether a time nearly equal to the TV utilization time is available for next TV viewing, on the basis of a voltage of the battery 21 at that point of time. When the next TV viewing is unavailable, the CPU 11 displays a warning message indicating the unavailability on a display section 15. Thus, the battery 21 can be replaced or charged, in advance, in preparation for the next TV viewing for the time of power OFF, and the occurrence of the worn battery can be avoided in the midway of the next TV viewing, when the battery is used for the time nearly equal to the TV utilization time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a battery-driven terminal device such as a portable television receiver or a mobile phone device, and a battery state warning method and program used for the terminal device.

  For example, portable television receivers, mobile phone devices, and the like include a battery as a drive source, and the operation time is determined by the capacity of the battery. Normally, this type of battery-powered terminal device is configured to automatically turn off the power to prevent the battery from degrading when the battery capacity is low and its discharge voltage is below the specified value. Has been. For this reason, when the terminal device is used in a state where the remaining amount of the battery is low, there arises a problem that the power is suddenly turned off during the work.

  Conventionally, Patent Documents 1 and 2 are known as inventions that solve such a problem of battery exhaustion.

Patent Document 1 discloses that a mobile phone device warns a user to shorten a call time by notifying a decrease state of a remaining battery level when an incoming call is received. Further, in Patent Document 2, in a portable device (handy terminal), when a user performs an input of work to be executed, the power consumption required for the work is calculated, and the current battery remaining amount does not satisfy the power consumption Is disclosed to issue a warning.
JP 2001-333538 A JP 2002-62955 A

  However, in the method of warning the remaining battery level when there is an incoming call as in the above-mentioned Patent Document 1, the state where the remaining battery level is insufficient does not change even though the long call can be watched at that time. There is a possibility that the battery runs out during the call.

  In addition, as in Patent Document 2, in the method of warning when the remaining battery power required for the work to be executed is insufficient, a troublesome operation in which the user inputs the work time in advance each time is necessary. There is a possibility that the battery runs out during the operation due to an error in the input operation.

  The present invention has been made in view of the above points, and a terminal device, a battery state warning method, and a battery state warning method that can accurately warn of a battery shortage according to a user's usage time so as not to cause a battery exhaustion on the way. The purpose is to provide a program.

  (1) According to the present invention, in a terminal device including a battery as a drive source, when a power source is turned off, a usage time calculation unit that calculates a current usage time of the terminal device; Based on the battery measuring means for measuring the voltage, and the battery voltage measured by the battery measuring means and the usage time calculated by the usage time calculating means, it is determined whether or not the next use is possible. And a warning unit that issues a warning regarding the remaining battery level when it is determined that the battery cannot be used.

  According to such a configuration, when the power is turned off, the possibility of the next use is determined based on the battery voltage at that time and the current use time of the terminal device, and according to the result Warning of battery shortage. Therefore, the battery can be prepared in advance for the next use, and when the same time is used next time, it can be avoided that the battery runs out in the middle.

  Further, the present invention further includes a history holding unit that holds a history of usage times obtained in the past in the terminal device, wherein the usage time calculation unit stores the usage time history held in the history holding unit this time. It is characterized by taking into account the use time of.

  According to such a configuration, by adding the usage time history to the current usage time, the average usage time of the user can be obtained, and an accurate warning can be issued based on the usage time.

  Further, the present invention is characterized in that, in the terminal device, the battery measuring unit measures the voltage of the battery when the usage time calculated by the usage time calculation unit is longer than a preset time. And

  According to such a configuration, when the usage time is relatively long and the power consumption is high, a battery check is performed, and if it is determined that the battery is insufficient, a warning is issued for the next time.

  (2) The present invention provides a call time calculating means for calculating a call time by the communication function in a terminal device having a battery as a drive source and having a communication function for performing a call process with a counterpart terminal, The next call is possible based on the battery measuring means for measuring the voltage of the battery at the end, the battery voltage measured by the battery measuring means and the call time calculated by the call time calculating means. And determining means for determining whether or not a call is impossible by the determining means, and warning means for issuing a warning regarding the remaining battery level.

  According to such a configuration, when making a call using the call function, the possibility of the next call is determined based on the battery voltage and the call time at the end of the call, and according to the result Warning of battery shortage. Therefore, it is possible to prepare the battery in advance for the next call, and when the next call is made for the same time, it is possible to avoid the battery running out during the call. it can.

  Further, the present invention includes a storage unit that stores a plurality of telephone numbers of the other party in the terminal device, wherein the battery measuring unit is a telephone call designated in advance among each of the other parties stored in the storage unit. The battery voltage is measured during a call with the other party.

  According to such a configuration, when a call is made with a specific party, a battery check is performed, and if it is determined that the battery is insufficient, a warning is issued for the next time.

  According to the present invention, when the power is turned off, the possibility of the next use is determined based on the battery voltage and the usage time at that time, and the battery is insufficient when the next use is determined to be impossible. The battery can be prepared in advance for the next use, and when the same time is used next time, the battery will run out in the middle. It can be avoided.

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

(First embodiment)
FIG. 1 is a block diagram showing a configuration when a portable TV receiver is taken as an example of a terminal device according to the first embodiment of the present invention. This portable TV receiver operates using a battery as a drive source, and can freely carry around and watch TV program broadcasts as long as it can receive TV radio waves.

  As shown in FIG. 1, the portable TV receiver 10 includes a CPU 11. The CPU 11 reads a program stored in the ROM 12, the RAM 13, or the like, and executes various processes according to procedures described in the program. Here, a battery status warning process corresponding to the TV usage time is executed.

  The CPU 11 is connected to a ROM 12, a RAM 13, and an RTC (real time clock) 14 via a system bus 11a, a display unit 15, an input unit 16, a TV receiving unit 17, an audio processing unit 18, and a power control unit. 20 etc. are connected.

  The ROM 12 is provided with a program area 12a storing program data for starting the CPU 11, a font area 12b storing display font data, and the like. The RAM 13 stores various types of information necessary for the processing operation of the CPU 11. Here, the history tables 13 a to 13 d that hold the history data of TV usage time obtained in the past divided into four seasons, the current date and time, etc. are temporarily stored. A work area 13e is provided for holding the target.

  The RTC 14 measures the current date and time data in synchronization with the internal clock signal.

  The display unit 15 is composed of a color liquid crystal display device, and displays various data such as a menu screen and received TV broadcast video. The input unit 16 is an input device for inputting various data and giving instructions, and includes a power-on key 16a for turning on the power of the apparatus, a power-off key 16b for turning off the power of the apparatus, and a TV channel. And a channel key 16c for switching.

  The TV receiver 17 includes a tuner and the like, and receives and processes broadcast data (video and audio) of the TV channel designated by operating the channel key 16c. 17a in the figure is the receiving antenna. The audio processing unit 18 performs reproduction processing of audio data included in the broadcast data received by the TV receiving unit 17. Reference numeral 19 in the figure denotes a speaker for outputting the audio data.

  The power supply control unit 20 uses the battery 21 as a drive source at the time of carrying, and performs drive voltage supply control to each unit including the CPU 11. The battery 21 is formed of a secondary battery having a predetermined capacity, and can be charged via an adapter (not shown) and can be replaced detachably. The power supply control unit 20 includes a low voltage detection unit 22. The low voltage detection unit 22 is normally mounted on a battery-driven device, and detects a state in which the voltage of the battery 21 has decreased to a predetermined voltage value.

  Next, the operation of the first embodiment will be described.

  FIG. 2 is a flowchart showing battery state warning processing of the portable TV receiver 10 according to the first embodiment. Note that the processing shown in this flowchart is executed by the CPU 11 that is a microcomputer mounted on the portable TV receiver 10 reading a program.

  Suppose now that this apparatus is brought into a bathroom or the like and a TV broadcast is regularly viewed for about 30 minutes every day.

  When the power supply of the apparatus (that is, the TV power supply) is turned on by operating the power-on key 16 a provided in the input unit 16, the CPU 11 first acquires the current date / time data from the RTC 14 and stores it in the work area 13 e of the RAM 13. Hold it (step A11).

  Subsequently, the CPU 11 activates the TV receiving unit 17, receives and processes broadcast data of the TV channel designated by the operation of the channel key 16c, displays video data included in the broadcast data on the display unit 15, and Audio data included in the broadcast data is output from the speaker 19 via the audio processing unit 18 (step A12).

Here, when the power is turned off by the operation of the power off key 16b (Yes in Step A13), the CPU 11 calculates the TV use time up to that point (Step A14). This TV use time indicates the time from when the user turns on the power of the apparatus to when it is turned off, and the current date / time data stored in the work area 13e of the RAM 13 and the current (when the power is turned off) obtained from the RTC 14. ) Date and time data,
(Current time)-(Time when power is turned on)
Is obtained by calculating.

  Next, the CPU 11 specifies the season from the date, reads the history table corresponding to the specified season from the RAM 13, and includes the average TV usage time in the season including the current TV usage time obtained in the step A14. A value is obtained (step A15).

  For example, March to May is Season 1 (Spring), June to August is Season 2 (Summer), September to November is Season 3 (Autumn), and December to February is Season 4 (Winter). It is assumed that history tables 13 a to 13 d corresponding to 1 to 4 are provided in the RAM 13. Also, if the current date is July 30 and the current TV usage time obtained in step A14 is “30 minutes”, the history table 13b of season 2 is referred to and registered there. An average value is obtained from the past TV use time and the current TV use time.

In this case, the past TV usage times registered in the history table 13b of season 2 are “29 minutes”, “28 minutes”, “33 minutes”, “35 minutes”, and the current TV usage time is “30”. The average value is
(29 + 28 + 33 + 35 + 30) / 5 = 31 minutes.

  Next, the CPU 11 measures the current voltage (remaining battery level) of the battery 21 by the A / D converter mounted on the power supply control unit 20 (step A16), and then continuously receives TV with the measured voltage. Is calculated based on the power consumption characteristic at the time of TV reception in this apparatus (step A17).

  Then, the CPU 11 compares the executable time calculated from the battery voltage with the average value (31 minutes) of the TV use time obtained in step A15, and the executable time is shorter than the average value of the TV use time. In such a case, it is determined that the TV cannot be used for the same amount of time with the current battery voltage (No in step A18), and the remaining battery level is low regardless of the detection result of the low voltage detection unit 22. Is displayed on the display unit 15 (step A19).

  In this case, for example, a specific message may be included in the warning message and displayed, for example, “the TV viewing time has become 31 minutes or less. Please replace or charge the battery”.

  The warning method at this time is not limited to the message display, but may be an audio output. After the warning, the CPU 11 stops the power supply operation to each unit such as the TV receiving unit 17 and the display unit 15 and performs a power-off process such as registering the current TV usage time in the corresponding history table. This process is finished (step A20).

  On the other hand, if the executable time is longer than the average value of the TV use time, the CPU 11 determines that the TV can be used for the same time next time (Yes in step A18), and performs the power-off process as it is. The process in (1) is finished (step A20).

  In this way, in the portable TV receiver, when the user turns off the power of the apparatus, the current voltage of the battery 21 is checked, and the battery voltage and the usage time of the apparatus (TV reception function) are checked. Based on this, the possibility of the next use is determined and a warning is given to the user when the next TV use is not possible for the same amount of time, so that the user can use the battery 21 in advance in preparation for the next TV use. Replacement and charging can be performed.

  In this case, normally, when the voltage of the battery 21 is reduced to a predetermined value by the function of the low voltage detection unit 22, a warning of the remaining battery level is issued. Before such a final state comes, Since the warning is issued in consideration of the user's TV usage time, when watching TV for the same time next time, the problem that the battery runs out in the middle and misses a good scene can be solved. it can.

  Further, by keeping a history of TV usage time for each season and calculating the current TV usage time by taking into account the TV usage time of the corresponding season, for example, when watching TV in the bathroom, the summer is hot A warning message can be displayed in consideration of the TV usage time according to the season, such as a short time in the season and a long time in the cold winter.

  In the first embodiment, the seasons are divided into four and four TV usage time history tables are prepared corresponding to these seasons. However, it may be further classified. Further, for example, classification may be performed on a monthly basis or a classification based on day of the week, and the classification method is not particularly limited.

  In addition, as a method for calculating the average value of TV usage time, for example, a method of obtaining an average value after removing the maximum value and the minimum value may be used, and the calculation method is not particularly limited.

(Second Embodiment)
FIG. 3 is a block diagram showing a configuration when a mobile phone device with a TV is taken as an example of the terminal device according to the second embodiment of the present invention. This TV-equipped mobile phone device operates with a battery as a driving source and has a TV broadcast receiving function in addition to the basic call function. It can be freely carried anywhere where TV radio waves can be received. TV program broadcasts can be viewed.

  As shown in FIG. 3, the mobile phone device 30 includes a CPU 31. The CPU 31 reads a program stored in the ROM 32, the RAM 33, etc., and executes various processes according to the procedures described in the program. Here, the battery state warning process corresponding to the TV usage time or the call time is executed. To do.

  The CPU 31 is connected to a ROM 32, a RAM 33, and an RTC (real time clock) 34 via a system bus 31a, as well as a display unit 35, an input unit 36, a TV receiving unit 37, an audio processing unit 38, and a power control unit. 40, a wireless communication unit 43, and the like are connected.

  The ROM 32 is provided with a program area 32a that stores program data for starting the CPU 31, a font area 32b that stores font data for display, and the like. The RAM 33 stores various information necessary for the processing operation of the CPU 31, and here, there is an address book table 33a in which the telephone number of the other party is registered, and a work area 33b for temporarily storing the current date and time. Is provided.

  The RTC 34 measures the current date and time data in synchronization with the internal clock signal.

  The display unit 35 includes a color liquid crystal display device, and displays various data such as a menu screen and received TV broadcast video. The input unit 36 is an input device for inputting various data and giving instructions, and includes a power key 36a for turning on / off the power of the apparatus and an on / off operation for the TV reception function of the apparatus. A TV key 36b, a channel key 36c for switching TV channels, a dial key 36d used for a call function of the apparatus, a call / incoming key 36e, and the like are provided.

  The TV receiver 37 includes a tuner and the like, and receives and processes broadcast data (video and audio) of the TV channel designated by operating the channel key 36c. 37a in the figure is the receiving antenna. The audio processing unit 38 performs reproduction processing of audio data included in the broadcast data received by the TV receiving unit 37. 39a in the figure is a speaker for outputting the audio data. Further, during a call, the voice processing unit 38 outputs the voice data received from the partner terminal from the speaker 39a and performs processing for sending the voice data input from the microphone 39b to the partner terminal. In this case, the speaker 39a is used as a receiver and the microphone 39b is used as a transmitter.

  The power supply control unit 40 uses the battery 41 as a drive source when carried, and controls the supply of drive voltage to each unit including the CPU 31. The battery 41 is formed of a secondary battery having a predetermined capacity, and can be charged via an adapter (not shown) and is detachable and replaceable. The power supply control unit 40 includes a low voltage detection unit 42. The low voltage detection unit 42 is normally mounted on a battery-driven device, and detects a state in which the voltage of the battery 41 has decreased to a predetermined voltage value.

  Under the control of the CPU 31, the wireless communication unit 43 performs communication processing with an external communication terminal according to a predetermined wireless method via a base station (not shown). 43a in the figure is the wireless antenna.

  FIG. 4 shows an example of the address book table 33a.

  In the address book table 33a, a plurality of telephone telephones of the other party are registered. Further, among these call partners, a caller who is likely to become a long call is arbitrarily designated on an address setting screen (not shown), for example, and “1” is set in the attribute information of the designated call partner. ing. The partner who is likely to be a long phone is, for example, a person related to a company, and the partner who can be a short call is a family member. In the example of FIG. 4, “AAA” is designated as a partner who is likely to be a long call.

  Next, the operation of the second embodiment will be described.

  FIG. 5 is a flowchart showing a battery state warning process of the mobile phone device 30 according to the second embodiment. The process shown in this flowchart is executed by the CPU 31 that is a microcomputer mounted on the mobile phone device 30 reading a program.

  Now, description will be made assuming that the user uses the TV reception function or the call function which is a basic function of the present apparatus.

  When the TV reception function is turned on by operating the TV key 36b while the power of the apparatus is turned on by operating the power key 36a provided in the input unit 36 (Yes in step B11), the CPU 31 starts from the RTC 34. Current date / time data is acquired and stored in the work area 33b of the RAM 33 (step B12).

  Subsequently, the CPU 31 activates the TV receiver 37, receives broadcast data of the TV channel designated by the operation of the channel key 36c, displays video data included in the broadcast data on the display 35, and Audio data included in the broadcast data is output from the speaker 39 via the audio processing unit 38 (step B13).

Here, when the TV reception function is turned off by the operation of the TV key 36b (Yes in Step B14), the CPU 31 calculates the TV use time up to that point (Step B15). This TV usage time indicates the time from when the user turns on the TV reception function of the apparatus until it is turned off. The TV on-time date and time data stored in the work area 33b of the RAM 33 and the current (TV) Based on date and time data)
(Current time)-(Time when TV is on)
Is obtained by calculating.

  Next, the CPU 31 determines whether or not the TV use time is equal to or longer than the predetermined time T (step B16). The predetermined time T is for monitoring the TV usage for a relatively long time, and the value is set in advance by the capacity of the battery 41, power consumption, and the like. Note that the user may arbitrarily change the value of the predetermined time T.

  If the current TV usage time is equal to or longer than the predetermined time T (Yes in step B16), the CPU 31 uses the A / D converter mounted in the power supply control unit 40 to current voltage of the battery 41 (battery remaining amount). ) Is measured (step B17), the time during which TV reception can be continuously executed with the measured voltage is calculated based on the power consumption characteristics during TV reception in this apparatus (step B18).

  Then, the CPU 31 compares the executable time calculated from the battery voltage with the TV usage time obtained in step B15, and when the executable time is shorter than the TV usage time, the current battery voltage is comparable. (No in step B19), and a warning message indicating that the remaining battery level is low is displayed on the display unit 35 regardless of the detection result of the low voltage detection unit 42. (Step B20). In this case, as described in the first embodiment, a specific time may be included in the warning message and displayed, or a warning may be given by voice.

  On the other hand, if the executable time is longer than the TV use time, the CPU 31 determines that the TV can be used for the same amount of time next time (Yes in step B16), and the process here without displaying a warning message. Finish.

  Further, when the user uses a call function that is a basic function of the present apparatus (Yes in Step B21), for example, at the timing when the outgoing / incoming key 36e is operated, the CPU 31 performs the current operation from the RTC 34. Date / time data is acquired and stored in the work area 33b of the RAM 33 (step B22).

  Subsequently, after establishing a connection with the other party through the wireless communication unit 43, the CPU 31 performs voice processing on the voice data received from the terminal device of the other party and outputs it from the speaker 39a. Further, predetermined voice processing such as voice processing of the user voice data input from the microphone 39b is performed by the voice processing unit 38 and transmitted to the terminal device of the other party of the call (step B23).

Here, when the call with the other party is terminated and the call function of the apparatus is turned off by a predetermined operation (Yes in step B24), the CPU 31 calculates the call time up to that point (step B25). This call time indicates the time from when the user starts a call using the call function of this apparatus until the end of the call. The call start date / time data stored in the work area 33b of the RAM 33 and the current (call) Based on date and time data)
(Current time)-(Time when the call starts)
Is obtained by calculating.

  Next, the CPU 31 refers to the address book table 33a stored in the RAM 33 to determine whether or not the call is with a specific partner (step B26). In this case, as shown in FIG. 4, if the attribute information is added to the telephone number of the other party in the address book table 33a, it is determined as a specific party.

  If the call is with a specific partner (Yes in step B26), the CPU 31 measures the current voltage (remaining battery amount) of the battery 41 by the A / D converter mounted on the power supply control unit 40. After (step B27), a time during which a call can be continuously executed with the measured voltage value is calculated based on the power consumption characteristic during the call in the apparatus (step B28).

  Then, the CPU 31 compares the executable time calculated from the battery voltage with the call time obtained in the step B25, and when the executable time is shorter than the call time, the current battery voltage again determines the specific time. A warning message indicating that the remaining battery level is low regardless of the detection result of the low-voltage detection unit 42 because it is determined that a call of the same degree cannot be made when talking to a person (No in Step B29). Is displayed on the display unit 35 (step B30). Also in this case, as described in the first embodiment, a specific time may be included in the warning message and displayed, or a warning may be given by voice.

  On the other hand, if the executable time is longer than the call time, the CPU 31 determines that the call can be made for the same amount of time next time (Yes in step B29), and ends the process here without displaying a warning message. .

  In this way, in the mobile phone device with a TV, when the user views the TV for a predetermined time or when talking with a specific partner, the current voltage of the battery 41 is checked, and the battery voltage and the function (TV When it is determined that the next TV use is not possible or the telephone call is impossible next time based on the use time of the reception function or the call function), the user is warned to that effect. If the battery 41 is replaced and charged, the same TV use or telephone call can be performed next time.

  Further, as in the first embodiment, a warning of the remaining battery level is usually issued when the voltage of the battery 41 is reduced to a predetermined value by the function of the low voltage detection unit 42. Before the final state comes, a warning will be issued at the above timing, so in the case of an emergency (that is, the user will watch TV for a relatively long time like this time, or make a long call with a specific person) In case).

  The present invention is not limited to a portable TV receiver or a mobile phone device. For example, the present invention can be applied to any battery-driven terminal device such as a PDA (Personal Digital Assistant) or a portable personal computer. Can be applied, and the same effect as described above can be obtained.

  In short, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. Furthermore, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, the effects described in “Problems to be solved by the invention” can be solved, and are described in the “Effects of the invention” column. If the effect is obtained, a configuration from which this configuration requirement is deleted can be extracted as an invention.

  Further, the method described in each of the above-described embodiments is a program that can be executed by a computer, such as a magnetic disk (flexible disk, hard disk, etc.), an optical disk (CD-ROM, DVD-ROM, etc.), and a semiconductor memory. It is possible to write the program on a recording medium and apply it to various devices, or to transmit the program itself via a transmission medium such as a network and apply it to various devices. A computer that implements this apparatus reads a program recorded on a recording medium or a program provided via a transmission medium, and performs the above-described processing by controlling operations by this program.

The block diagram which shows the structure at the time of taking a portable TV receiver as an example as a terminal device which concerns on the 1st Embodiment of this invention. The flowchart which shows the battery state warning process of the portable TV receiver in 1st Embodiment. The block diagram which shows the structure at the time of taking the mobile telephone apparatus with TV as an example as a terminal device which concerns on the 2nd Embodiment of this invention. The figure which shows an example of the address book table with which the mobile telephone apparatus with TV in 2nd Embodiment was equipped. The flowchart which shows the battery state warning process of the mobile telephone apparatus with TV in 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Portable TV receiver, 11 ... CPU, 12 ... ROM, 13 ... RAM, 13a-13d ... History table, 13e ... Work area, 14 ... RTC, 15 ... Display part, 16 ... Input part, 16a ... Power ON key 16b ... Power off key, 16c ... Channel key, 17 ... TV receiver, 18 ... Audio processing unit, 19 ... Speaker, 20 ... Power control unit, 21 ... Battery, 22 ... Low voltage detection unit, 30 ... Cell phone device, 31 ... CPU, 32 ... ROM, 33 ... RAM, 33a ... Address book table, 33b ... Work area, 34 ... RTC, 35 ... Display unit, 36 ... Input unit, 36a ... Power key, 36b ... TV key, 36c ... Channel Key, 36d ... dial key, 36e ... outgoing / incoming key, 37 ... TV receiver 37, 38 ... voice processor, 39a ... speaker, 39b ... my , 40 ... power supply control unit, 41 ... battery, 42 ... low-voltage detection unit, 43 ... wireless communication unit.

Claims (9)

In a terminal device provided with a battery as a drive source,
Usage time calculation means for calculating the current usage time of the terminal device when the power is turned off;
Battery measuring means for measuring the voltage of the battery when the power is off;
Determining means for determining whether or not the next use is possible based on the voltage of the battery measured by the battery measuring means and the usage time calculated by the usage time calculating means;
A terminal device comprising: warning means for issuing a warning regarding the remaining amount of the battery when it is determined by the determining means that the battery cannot be used. A history holding means for holding a history of usage times obtained in the past is provided,
The terminal device according to claim 1, wherein the usage time calculating unit adds the usage time history held in the history holding unit to the current usage time.   The terminal device according to claim 1, wherein the battery measuring unit measures the voltage of the battery when the usage time calculated by the usage time calculation unit is longer than a preset time. In a terminal device having a battery as a drive source and a communication function for performing a call process with a partner terminal,
A call time calculating means for calculating a call time by the communication function;
Battery measuring means for measuring the voltage of the battery at the end of a call;
Determining means for determining whether or not the next call is possible based on the voltage of the battery measured by the battery measuring means and the call time calculated by the call time calculating means;
A terminal device comprising: warning means for issuing a warning regarding the remaining battery level when it is determined by the determining means that a call is impossible. A storage means storing a plurality of telephone numbers of the other party;
5. The terminal device according to claim 4, wherein the battery measuring means measures the voltage of the battery during a call with a call partner designated in advance among the call opponents stored in the storage means. A battery status warning method used in a terminal device provided with a battery as a drive source,
Calculating the current usage time of the terminal device when the power is turned off;
Measuring the battery voltage when the power is off;
Determining whether next use is possible based on the measured battery voltage and the calculated usage time;
And a step of issuing a warning regarding the remaining battery level when it is determined that the battery cannot be used. A battery state warning method used for a terminal device including a battery as a drive source and a communication function for performing a call process with a partner terminal,
Calculating a call time by the communication function;
Measuring the battery voltage at the end of the call;
Determining whether a next call is possible based on the measured battery voltage and the calculated call duration;
And a step of issuing a warning regarding the remaining battery level when it is determined that a call is impossible. A program executed by a computer having a battery as a drive source,
In the computer,
A function that calculates the current usage time when the power is turned off,
A function of measuring the voltage of the battery when the power is off;
A function of determining whether or not the next use is possible based on the measured battery voltage and the calculated usage time;
A program for realizing a function of issuing a warning regarding the remaining battery level when it is determined that the battery cannot be used. A program that is executed by a computer that includes a battery as a drive source and a communication function that performs call processing with a partner terminal,
In the computer,
A function for calculating a call time by the communication function;
A function for measuring the voltage of the battery at the end of the call;
A function of determining whether a next call is possible based on the measured battery voltage and the calculated call time;
And a function for issuing a warning regarding the remaining battery level when it is determined that a call is impossible.

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