JP2008011155A - Mobile communication terminal device and power-saving method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile communication terminal device and its power-saving method, with which the call time and a waiting time can be prolonged, according to the time duration for and a site situation for user. <P>SOLUTION: In the mobile communication terminal device, a CPU 15 detects the remaining level of a battery 25 used as a power supply. When the detected remaining level of the battery exceeds a remaining battery level threshold required for the starting up of a mode for setting power-saving condition, the mode for setting the power-saving condition is started and then a calling time and a waiting time are calculated, based on the condition that has been set by the mode to be displayed on a liquid crystal device 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable communication terminal device capable of extending the continuous usable time and a power saving method thereof.

  A mobile communication terminal device such as a mobile phone has a battery inside as a power source, detects changes in the voltage value of the battery during a call and standby, and detects the remaining battery capacity based on this change in voltage value The remaining capacity level is displayed on a display unit such as a liquid crystal panel.

In addition, a time indicating how long the mobile communication terminal device can be continuously used in view of the remaining capacity of the battery is calculated and displayed. Patent Document 1 discloses an operation mode (standby mode). An apparatus is disclosed that calculates a remaining time value indicating how long an operation can continue after each (such as a state mode or a call state mode). Patent Document 2 discloses a device that calculates the remaining capacity of a battery and a callable time and informs the callable time by voice. Patent Document 3 discloses a device immediately after changing from a call state to a standby state. Discloses a remaining battery level display device that does not determine that the remaining battery level is unduly low.
JP-A-9-181804 JP 10-31833 A JP 2001-103671 A

  However, the conventional technique only calculates the continuous usable time of the apparatus from the remaining capacity of the battery, and does not change the continuous usable time. Although the mobile phone can extend the continuous usable time by charging the battery, it may not always be able to charge the battery depending on the situation where the user is placed. Also, depending on the user's situation, even if the remaining battery capacity is low, it is not always possible to know when a mobile phone will receive a call. Therefore, it is desirable to always turn on the power to ensure a long usable time. There is a case. There has been a problem that conventional mobile phones cannot cope with such a situation.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a portable communication terminal device capable of extending the continuous usable time of the device in accordance with the time and place conditions of the user, and It is to provide a power saving method.

  In order to achieve the above object, a mobile communication terminal device according to the present invention includes a battery used as a power source, a display unit, a battery remaining amount detecting unit for detecting a remaining battery level of the battery, and a mode for setting a power save condition. A storage unit for storing a battery remaining amount threshold value for activation, and when a battery remaining amount value detected by the battery remaining amount detecting unit exceeds a battery remaining amount threshold value, a mode for setting a power saving condition is activated, and the mode And a control means for calculating an operation time based on the condition set in (5) and controlling the display on the display means.

  In the mode for setting the power save conditions, it is preferable to display the magnitude of the power saving effect for each setting item on the display means, and it is preferable to display the setting items in the descending order of the power saving effect on the display means. Furthermore, it is preferable that a setting time is provided for each setting item, and if the setting is not input within the time, the setting of the item is validated.

  In addition, after the call ends, it is preferable to activate a mode for setting the power saving condition if the remaining battery level detected by the remaining battery level detection means exceeds the remaining battery level threshold.

  Further, the power saving method of the mobile communication terminal device of the present invention detects the remaining battery level of a battery used as a power source, and the detected remaining battery level value activates a mode for setting a power saving condition. If the amount threshold is exceeded, a mode for setting the power save condition is activated, and the operation time is calculated based on the condition set in the mode to perform notification control.

  In the present invention, when the remaining battery level of the battery exceeds the remaining battery level threshold value, a mode for setting the power saving condition is activated and the power saving condition is set. Time and standby time can be extended.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram showing a mobile communication terminal apparatus according to an embodiment of the present invention. In the present embodiment, a mobile phone will be described as an example of the mobile communication terminal device. In FIG. 1, a mobile communication terminal apparatus includes an RF transceiver unit 12 that transmits and receives signals to and from a base station via an antenna 11, a baseband unit 13 that modulates and demodulates signals, a liquid crystal display unit (LCD) 14, and a program. A sound source unit 17 that outputs a sound signal such as a melody, a codec unit 18 that performs AD and DA conversion of the audio signal, and a sound source unit. 17 and switch 20 for switching between codec unit 18, telephone speakers 21 and 22, telephone microphone 23, battery 25 used as a power source for this apparatus, and AD conversion for converting the analog voltage value of battery 25 into a digital voltage value Unit 24, CPU 15 for calculating the remaining amount of battery 25, processing and controlling signals, and input information from the user to CPU 15 A key input unit 19 for feeding a power source IC26 for controlling the power supply voltage, and a LED27 to light during operation of the power IC26.

  The memory unit 16 stores a battery remaining amount threshold value for starting a mode for setting power saving conditions (hereinafter referred to as a power saving mode).

  The CPU 15 converts the voltage value of the battery 25 read by the AD conversion unit 24 into a current value display, compares the voltage value of the battery 25 with a battery remaining amount curve table stored in the memory unit 16, and detects the remaining battery level. When the function of the detecting means and the detected battery remaining amount value exceed the battery remaining amount threshold value, the power saving mode is activated, and the operation time is calculated based on the conditions set in the mode, and the liquid crystal display unit ( LCD) 14 has a function as control means for controlling display. Note that these functions are realized by the CPU 15 executing a program stored in the memory unit 16.

  FIG. 2 is a diagram illustrating an estimated operating current amount for each block unit of the mobile communication terminal device. The CPU 15 calculates an average standby current amount and an average call current amount in advance using the estimated operating current amount for each block unit shown in FIG. 2, and stores these values in the memory unit 16.

  FIG. 3 is a diagram showing a battery remaining capacity curve representing the relationship between the remaining battery capacity (mA) and time (hours) until the battery capacity is exhausted at the time of standby, and FIG. 4 is the battery capacity disappearing during a call. It is a figure which shows the battery remaining amount curve showing the relationship between the battery remaining amount (mA) until and time (minute). These battery remaining capacity curves are stored in the memory unit 16 as a table. The CPU 15 can calculate the remaining current amount from the battery remaining amount curve in FIG. 3 and divide by the average standby current amount to calculate the remaining time at the standby time. The remaining time from the battery remaining curve in FIG. 4 can be calculated. By calculating the amount of current and dividing by the average amount of call current, the remaining time during a call can be calculated. By storing these values in a table in the memory unit 16, calculation is always easy.

  FIG. 5 is a flowchart for explaining an operation example when the power save condition is set interactively in the mobile communication terminal device of the present invention. When the capacity of the battery 25 exceeds the remaining battery level threshold during standby, the mobile communication terminal device displays “The remaining battery level is low. The message “1 hour is possible” is displayed (step 11), and then “Can it be charged?” Is displayed (step 12). Here, when the user selects YES from the key input unit 19, a message “Please start charging” is displayed on the liquid crystal display unit 14 (step 22). "Is displayed (step 23), and then" approx. 160 minutes for a call and approximately 200 hours for standby "is displayed (step 24).

  When the user selects NO from the key input unit 19 in step 12, a message “Do you want to start the power save mode?” Is displayed on the liquid crystal display unit 14 (step 13). "Is it dark?" Is displayed (step 14). If the user selects YES here, a message “Would you like to turn on the LED?” Is displayed on the liquid crystal display unit 14 (step 25), and if YES, “Use it until it runs out?” Is displayed (step) 29).

  In step 14, if the user selects NO, the message "Do you want to turn off the LCD and key LED when receiving a call?" Is displayed (step 15). If YES, then "Do you want to stop the camera?" Display (step 16). If the user selects YES, a message “Do you want to stop the USB connection?” Is displayed on the liquid crystal display unit 14 (step 17). If YES, “Do you want to stop the ringtone?” If it is YES (step 18), a message “Do you want to slow down the CPU processing?” Is displayed (step 19). If the user selects YES, the message “Approximately 30 minutes for the call and approximately 3 hours for the standby” is displayed (step 20), and then “Please charge early” is displayed (step 21). .

  In Steps 13, 15 to 19, 25, 29, when the user selects NO from the key input unit 19, a confirmation message is displayed on the liquid crystal display unit 14, “Can I stop the mobile operation?” (Step 26) When the user selects YES, a message "Can the system be automatically stopped?" Is displayed (Step 27), and the power of the mobile communication terminal device is turned off (Step 28). If the user selects NO in step 26, “Use until power is turned off?” Is displayed (step 29), and the power is turned off when the remaining amount of the battery 25 is exhausted (step 28).

  Since it can be set interactively as described above, power save conditions can be easily set even for elderly people and children. In addition, the above-described message can be displayed on the liquid crystal display unit 14 and can be output from the telephone speakers 21 and 22 by voice. If it can be output by voice, even a person with visual problems can easily set the power saving condition.

  FIG. 6 is a diagram showing a display example when the power save condition is set interactively on the standby screen. When the mode for setting the power saving condition is activated, a battery icon indicating the remaining battery level and an antenna icon indicating the reception state are displayed on the upper portion of the liquid crystal display unit 14. You can talk for 5 minutes. Do you want to extend the call time? "Message is displayed, and the current time is displayed at the bottom. On the setting 1 screen, the message (item) “Do you want to turn off the LED and LCD backlight?” Is displayed for t1 time in the center of the screen, and on the setting 2 screen, “Do you want to stop the camera?” ? "Message (item) is displayed for t2 hours, and on the setting 3 screen, the message (item)" Do you want to stop the Bluetooth, USB connection? " On the screen, the message (item) “Do you want to stop the ringtone?” Is displayed for t4 hours in the center of the screen, and on the setting 5 screen, “Do you want to slow down the CPU processing?” The message (item) is displayed for t5 hours, and on the setting 6 screen, the message “Set to power save mode” is displayed in the center of the screen for t6 hours.

  When the setting screen for each item is displayed for t1, t2, t3, t4, and t5 hours and no setting is input within that time, the setting for the item that is not input is enabled (power save). . In addition, it is preferable to display the setting screen for each item in descending order of the power saving effect, except for the setting screen for items necessary for maintaining the telephone function.

  FIG. 7 is a diagram illustrating a display example when the power saving condition is set on the user setting screen. When the mode for setting the power save condition is activated, a screen for setting the extension of the call time is displayed on the liquid crystal display unit 14. On the call time extension setting screen, each of “LED backlight”, “LCD backlight”, “camera”, “USB interface (external interface)”, “voice incoming call”, “slow CPU processing” The item can be set to ON or OFF, and the magnitude (index) of the power saving effect is displayed for each setting item. Each setting item is preferably displayed in descending order of the power saving effect, except for the items “voice incoming call” and “slow CPU processing” necessary for maintaining the telephone function.

  On the screen after the setting, a battery icon indicating the remaining battery level and an antenna icon indicating the reception state are displayed on the upper part of the liquid crystal display unit 14, and “about 30 minutes for a call and about 3 for a standby state” are displayed in the center. "The time has been extended." Message is displayed, and the current time is displayed at the bottom. On the standby screen, the battery icon and antenna icon are displayed at the top, the message “You can talk for about 30 minutes” at the center, and the current time at the bottom. On the incoming call screen, the battery icon and antenna icon are displayed at the top, the message “You can talk for about 30 minutes” is displayed at the center, and the incoming text and the phone number of the other party are displayed at the bottom. On the outgoing call screen, the battery icon and antenna icon are displayed at the top, the message “You can talk for about 30 minutes” at the center, and the outgoing text and the phone number of the other party at the bottom.

  In the above-described embodiment, the power save mode is activated when the remaining battery level exceeds the remaining battery level threshold during standby. However, the remaining battery level is detected after the call ends, and the remaining battery level is determined by the remaining battery level. If the threshold is exceeded, the power save mode may be activated.

1 is a system configuration diagram showing a mobile communication terminal device according to an embodiment of the present invention. It is a figure showing the estimated operating current amount according to each block part of a portable communication terminal device. It is a figure which shows the battery remaining capacity curve showing the relationship between battery remaining charge (mA) and time (hour) until battery capacity is lose | eliminated at the time of standby. It is a figure which shows the battery remaining capacity curve showing the relationship between battery remaining charge (mA) and time (minutes) until the battery capacity at the time of a telephone call runs out. It is a flowchart explaining the operation example when setting a power save condition in an interactive form. It is a figure which shows the example of a display when setting a power save condition in an interactive form on a standby screen. It is a figure which shows the example of a display when setting a power save condition on a user setting screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Antenna 12 RF transmission / reception part 13 Baseband part 14 Liquid crystal display part (LCD)
15 CPU
DESCRIPTION OF SYMBOLS 16 Memory part 17 Sound source part 18 Codec part 19 Key input part 20 Switch 21, 22 Telephone speaker 23 Telephone microphone 24 AD conversion part 25 Battery 26 Power supply IC
27 LED

Claims (6)

A battery used as a power source;
Display means;
A battery level detecting means for detecting a battery level of the battery;
Storage means for storing a battery remaining amount threshold value for activating a mode for setting power saving conditions;
When the remaining battery level detected by the remaining battery level detection means exceeds the remaining battery level threshold, the mode for setting the power saving condition is activated, and the operation time is calculated based on the condition set in the mode. Control means for controlling display on the display means;
A mobile communication terminal device comprising:   2. The portable communication terminal device according to claim 1, wherein in the mode for setting the power saving condition, the magnitude of the power saving effect is displayed on the display means for each setting item.   3. The mobile communication terminal device according to claim 1, wherein in the mode for setting the power saving condition, setting items are displayed on the display unit in descending order of the effect of power saving. 4.   2. The mobile communication according to claim 1, wherein in the mode for setting the power saving condition, a setting time is provided for each setting item, and when the setting is not input within the time, the setting of the item is validated. Terminal device.   The mode for setting the power saving condition is activated if the battery remaining amount value detected by the battery remaining amount detecting means exceeds the battery remaining amount threshold after the end of the call. The mobile communication terminal apparatus in any one of -4.   The remaining battery level of the battery used as a power source is detected, and if the detected remaining battery level value exceeds the remaining battery level threshold value for starting the mode for setting the power saving condition, the power saving condition is set. A power saving method for a mobile communication terminal device, comprising: starting a mode, calculating an operation time based on conditions set in the mode, and performing notification control.

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