JP2009130860A - Mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal capable of further prolonging an available time of a function of which the remaining power of a battery becomes for a user set time, and ensuring functions in an order of priorities by prioritizing three of more functions. <P>SOLUTION: As functions, there are a motion picture reproducing function, speech function, mail function and camera function and each of the functions includes one of or both a normal mode during which performance is high but power consumption is relatively increased, and a power saving mode during which performance is a little inferior but power consumption is reduced. On the basis of user operation, a control part 2 records on a priority list 31 and a remaining battery power ensuring list 32 a priority and an operation ensured time indicating which function is desired to ensure operation thereof when the remaining power of a battery is reduced. The remaining power of a battery 4 is periodically measured, and on the basis of the preset priority and operation ensured time, the operation mode is set during which operation can be permitted, for each function, at the present point of time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a portable terminal capable of ensuring a minimum operation by limiting functions that can be executed when the remaining battery level is low in a portable terminal driven by a battery.

  There is an electric device that has an additional function unit such as a telephone function and a digital camera, and maintains a state where the communication unit can be used as a minimum condition even when the battery is reduced (see Patent Document 1). In the electric device disclosed in Patent Literature 1, the user can set the time for which the communication unit is desired to be usable, and the CPU is configured to add the additional function unit based on the power obtained by subtracting the power used in the communication unit from the remaining battery level. It is determined whether the operation can be permitted. If the operation is not permitted, the use of the additional function unit is prohibited to secure the usable time of the communication unit.

Similarly, there is a portable terminal device that restricts the function according to the remaining amount of the battery (see Patent Document 2). The mobile terminal device of Patent Document 2 reduces the power consumption of the mobile terminal device step by step, such as the graphics display function is stopped and the video display function is stopped, depending on the level of the remaining battery level while watching a broadcast program. In the end, only the audio output is used, so that the function is gradually limited, but the broadcast is continuously received as much as possible.
Japanese Patent Laid-Open No. 10-304578 (pages 4 to 5 and FIGS. 1 to 6) JP 2004-336330 A (pages 1 to 4, FIGS. 2 to 3)

  In the electric device of Patent Document 1, when the remaining battery level is reduced, the communication unit can be used for a user set time as a minimum condition. However, the function of this communication unit is single, and it is not possible to secure more time after the remaining battery level reaches the user set time. Further, this corresponds to the case where there are two functions of the communication unit and the additional function unit. However, when there are three or more functions, there is no description about ensuring the operation of each function. There is no description in Patent Document 2 as well.

  The present invention solves such a problem, and after the remaining battery level reaches the user set time, it further extends the usable time of the function to be secured, and even when there are three or more functions, An object of the present invention is to provide a mobile terminal that can prioritize and secure the operation of each function in order of priority.

  In order to achieve the above object, a portable terminal of the present invention is a portable terminal having a function of executing a plurality of applications, a battery that supplies power, and a remaining battery level measurement that measures the remaining battery level of the battery. A storage unit for storing a battery remaining amount reference value corresponding to a priority order for each application and an operation securing time set for each application, and a battery remaining amount measured by the battery remaining amount measuring unit. When it is detected that the battery level measured by the comparison unit is compared with the battery level reference value stored in the storage unit and the battery level measured by the comparison unit is less than the battery level reference value, Controls to identify applications that have a lower priority than the stored priority corresponding to the remaining amount reference value, and stop the operation of the identified application Is characterized by comprising a control means that.

  According to the present invention, since the operations of each of a plurality of applications can be restricted according to the user's desire according to the remaining battery level, the application that the user wants to use preferentially is used for a longer time than other applications. It becomes possible to do.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram of a mobile terminal according to Embodiments 1 and 2 of the present invention. The mobile terminal 100 includes a key operation unit 1, a control unit 2, a storage unit 3, a battery 4, a display control unit 5, an image processing unit 6, an audio processing unit 7, a camera 8, a display unit 9 including an LCD, a microphone 10, The speaker 11, the wireless transmission / reception unit 12, the antenna 13, the switch circuit 14, and the like are included.

  The key operation unit 1 is a user operation key, and includes a plurality of numeric keys and function keys. The key operation unit 1 performs various operations such as input of a telephone number, creation of mail text, reading of received mail, and video processing control. For each of the function 24, the mail processing control function 25, the call processing function 26, and the camera control function 27, priority information indicating which function is preferentially operated according to the remaining battery level, and how much operation is performed It is also used to set time information indicating that it is desired to secure time.

  The control unit 2 includes a CPU, RAM, ROM, etc. (not shown), and various functions are realized by executing programs stored in the ROM. In particular, the functions related to the present invention include a battery securing setting function 21, a battery securing function 22, a battery remaining capacity obtaining function 23, a moving image processing control function 24, a mail processing control function 25, a call processing function 26, and a camera control function. There are 27. In addition, the moving image processing control function 24, the mail processing control function 25, and the camera control function 27 include a normal mode with high performance but relatively high power consumption, and a power consumption that is slightly inferior but with relatively low power consumption. There are two operation modes of the power mode, and the call processing function 26 has only the normal mode.

  The storage unit 3 stores a priority list 31, a battery remaining amount securing list 32, a maximum operation time list 33, an operation permission state list 34, and an operation state list 35. In this example, each list is stored in a memory outside the control unit 2, but may be secured in a nonvolatile RAM provided in the control unit 2, for example. Each list will be described in detail later with reference to FIG.

Here, each function executed by the control unit 2 will be described.
The battery securing setting function 21 is function-specific, that is, a video processing control function 24, a mail processing control function 25, a call processing function 26, and a camera control function based on a request input by operating the operation key 1. 27, the specified priority information and time information are recorded in the priority list 31 and the remaining battery charge securing list 32.

  Further, the battery reserved value setting function 21 uses the operation time set by the user, refers to the maximum operation time list 33, converts the battery remaining amount (%) into the battery remaining amount secure list 32 and displays it in the normal mode. Record as remaining. In the second embodiment, the remaining amount in the power saving mode is also recorded. This is calculated by the ratio of the operation time of the battery remaining capacity securing list 32 to the maximum operable time of the maximum operation time list 33.

  For example, the moving image processing control function 24 is 3 hours ÷ 15 hours = 20% in the normal mode. This means that when the remaining battery level is 20%, 3 hours can be secured when operating alone in the normal mode. The moving image processing control function 24 is 3 hours ÷ 35 hours = 8.6% in the power saving mode. This means that when the battery remaining amount is 8.6%, 3 hours can be secured when operating alone in the power saving mode. The other functions are calculated in the same manner, and registration is completed.

  The battery securing function 22 periodically obtains the current remaining amount information of the battery 4 from the remaining battery amount acquisition unit 5, and based on the priority list 31 and the battery remaining amount securing list 32 set by the user, It is determined whether or not the operation can be permitted for each function, and the determination result is recorded in the operation permission state list 34. The operation mode set in the operation permission state list 34 is any one of a normal mode, a power saving mode, and an operation disabled mode.

  Further, the battery securing function 22 is set in the operation permission state list 34 when the operation mode of the function already executed with reference to the operation state list 35 does not match the operation mode of the operation permission state list 34. The changed operation mode is notified to the function being executed to prompt the change of the operation mode.

  Each function inquires the battery securing function 22 about the operation mode when the key operation unit 1 is operated, and the battery securing function 22 reads the operation mode set in the operation permission state list 34. Execution is started based on the notified operation mode, but if the notified operation mode is the operation disabled mode, the execution is not started. In this case, the control unit 2 controls the display control unit 5 to display a message on the display unit 9 indicating that the function requested to be activated by the user cannot be executed.

  The battery remaining amount acquisition function 23 measures the battery voltage of the battery 4, obtains battery remaining amount information (%) from, for example, the fully charged voltage stored in advance in the ROM of the control unit 2, and this battery remaining amount information. Is stored in the RAM of the control unit 2. Then, in response to a request from the battery securing control function 22, the battery remaining capacity information stored in the RAM is notified to the battery securing control function 22.

The battery 4 is a secondary battery or the like, and supplies power to the entire mobile terminal 100.
The display control unit 5 displays text data, still images, moving images, and the like on the display unit 9 based on requests from the control unit 2 and the image processing unit 6, and the state of the mobile terminal 100, that is, the remaining battery level and the radio wave state. Control the display of notification information.

  The image processing unit 6 decodes a still image compressed by an encoding method such as JPEG based on an instruction from the moving image processing control function 24 of the control unit 2 and MPEG4 or H.264 included in the multimedia file. H.264 is used to decode a moving image compressed by an encoding method such as H.264, and a display request is made to the display control unit 5 and audio data compressed by an encoding method such as AAC included in the multimedia file is decoded. And output from the speaker 11. Note that the moving image processing control function 24 can operate in the normal mode or the power saving mode based on an instruction from the battery securing function 22, and when operating in the normal mode, the moving image included in the multimedia file is highly reproduced. Control is performed so that full-screen display is performed at the bit rate. On the other hand, when operating in the power saving mode, control is performed so that display is performed at a low playback bit rate and in a narrow display area compared to full-screen display. That is, it is possible to switch between a normal mode with good image quality but relatively high power consumption, and a low power mode with slightly low power consumption but relatively low power consumption.

  As another example of the normal mode and the power saving mode, for example, when watching TV, the normal mode section reproduces both video and audio simultaneously, and in the power saving mode, only video or audio is reproduced. Also good.

  Further, the normal mode may be realized by operating dedicated high-performance hardware, and the power saving mode may be a configuration in which general-purpose hardware is operated and performance is inferior but power saving.

  The voice processing unit 7 converts the voice input from the microphone 10 into a digital signal based on a request from the call processing function 26 of the control unit 2, and G. The voice is coded based on a voice coding method such as 729 or EVRC, and the coded voice is output to the wireless transmission / reception unit 12. When encoded speech received from the base station is input via the wireless transmission / reception unit 12, decoding is performed based on a similar speech encoding method to obtain a speech digital signal, and this digital signal is It converts into an analog signal and outputs from the speaker 11. Note that the call processing function 26 operates only in the normal mode, and therefore, the normal mode or the inoperable mode is set based on an instruction from the battery securing function 22 according to the remaining battery level.

  The camera 8 is composed of a module such as a CCD, and is controlled by the camera control function 27 of the control unit 2 to capture a still image or a moving image. The camera control function 27 operates in a normal mode or a power saving mode based on an instruction from the battery securing function 22. In the normal mode, shooting using a high resolution mode or a flash is performed. In the power saving mode, a low resolution or the like is saved. Since the operation with electric power is performed, the resolution for photographing is switched according to the operation mode of the camera control function 27. In addition, the operation mode can be set by operating the key operation unit 1 without depending on the control of the battery securing function 22, and any operation can be performed as long as the operation mode instructed by the local securing function 22 is not violated. The camera 8 can be operated based on the mode.

  Here, the mail processing control function 25 of the control unit 2 will be described. The mail processing control function 25 operates in a normal mode or a power saving mode in response to a request from the battery securing function 22, and there is almost no difference in power consumption between the two operation modes, but the wireless transmission / reception unit 12 to be controlled is controlled. There is a difference in power consumption. Specifically, in the power saving mode, in order to reduce power consumption compared to the normal mode, for example, the power of the wireless transmission / reception unit 12 is turned off during mail display or mail creation, and the key operation unit 1 is operated to operate the mail When a transmission request is input, the wireless transmission / reception unit 12 is turned on. Further, when operating in the power saving mode, only text may be input, and the operation of attaching still images or moving images stored in the memory may be prohibited. In this case, since it is not necessary to perform an operation of decoding by the image processing unit 6 in order to select a still image or a moving image to be attached, power consumption can be suppressed.

  When performing a voice call, the wireless transmission / reception unit 12 receives the voice encoded by the voice processing unit 7 and transmits the voice to the base station via the antenna 13 and also receives the encoding received via the antenna 13. The processed audio signal is output to the audio processing unit 7. In addition, a mail created based on the mail processing function 25 is received and transmitted to the base station via the antenna 13, and the mail received via the antenna 13 is output to the control unit 2.

  FIG. 2 is a diagram illustrating the priority list 31, the battery remaining amount securing list 32, the maximum operation time list 33, the operation permission state list 34, and the operation status list 35 stored in the storage unit 3.

  The priority of the priority list 31 and the operation securing time of the battery remaining capacity securing list 32 are recorded by the battery secured value setting function 21 when a setting operation is performed by the user using the key operation unit 1.

  With respect to each function, the user can set in advance a time for securing an operation when the battery is depleted, that is, an operation securing time, and a priority indicating which function is to be prioritized to secure the operation. As a result, after the battery level set for a certain function F is reached, the function having a lower priority than the function F is automatically disabled, and the function F and a function having a higher priority than the function F are operated. By allowing it, the operation time of the function F can be guaranteed to some extent. Of course, when there is no function having a higher priority than the function F, the set operation time can be guaranteed.

  In the maximum operation time list 33, each operable time when one of the functions is operated in the normal mode or the power saving mode in the fully charged state of the battery 4 is measured in advance by an experiment or the like. It is recorded.

  In the operation permission state list 34, an operation mode indicating the operation permission state of each function is set by the battery securing function 22 in accordance with the decrease state of the battery 4. Normal mode is set for these functions. After the priority and the operation securing time of each function by the user are registered in the priority list 31 and the remaining battery charge securing list 32, the battery securing function 22 periodically checks the voltage of the battery 4 while checking the priority. With reference to the list 31 and the battery remaining amount securing list 32, the operation mode of each function is determined and recorded in the operation permission state list 34. This operation will be described in detail later with reference to FIGS.

  Note that any one of the priority list 31, the remaining battery level list 32, the maximum operation time list 33, and the operation permission state list 34 described above, for example, in the operation permission state list 34, in addition to the operation mode, Presence / absence of the normal mode and the power saving mode is recorded in advance as the possession mode possessed by the function, and the presence / absence of the normal mode or the power saving mode possessed by each function can be confirmed by confirming this.

  In the operation status list 35, a name indicating a function being operated, a battery securing function 22 recording whether the function is operating in the normal mode or the power saving mode, and a name indicating one or more functions being operated are recorded. The

FIG. 3 is an operation flowchart of the battery secured value setting function 21 of the portable terminal according to the first and second embodiments of the present invention.
When the user wants to make initial settings related to securing the battery, the user operates the key operation unit 1 to start a program for setting. When the control unit 2 executes this program, the function of the battery secured value setting function 21 is realized. When the battery secured value setting function 21 is activated, the battery secured value setting function 21 instructs the display control unit 5 to display a display screen for the user interface.

  When the remaining battery level gradually decreases, the user wants to prioritize which function the moving image processing control function 24, the mail processing control function 25, the call processing function 26, and the camera control function 27 operate. In addition, by operating the key operation unit 1 while setting a function list displayed on the display unit 9, it is set how long the operation time is desired.

  The secured battery value setting function 21 checks the user operation related to the priority and the secured operation time for each function, and registers them in the priority list 31 and the remaining battery charge securing list 32 (step S1).

  As an example of registration, as shown in the priority list 31 and the remaining battery level securing list 32 in FIG. 2, as the function that is most desired to be secured when the remaining battery level gradually decreases, the mail function is ranked 6th in the first priority level. Securing time, calling function 2nd priority 4.5 seconds, video function 3rd priority 3 hours, and camera function 4th priority 0.5 hours as the lowest priority function Secure is registered.

  Next, the battery securing value setting function 21 converts the time registered in the battery remaining amount securing list 32 into the battery remaining amount (%) based on the maximum operation time list 33, and the battery remaining amount securing list. 32 (step S2). In this example, the moving image function is 3 hours ÷ 15 hours = 20% in the normal mode, and 3 hours ÷ 35 hours = 8.6% in the power saving mode. The other functions are calculated in the same manner, and the initial registration is completed.

  Note that the user does not need to set priorities for all functions, and in this case, functions for which priority is not set are considered to have the lowest priority.

  FIG. 4 is a flowchart showing operations related to the battery remaining amount check and the operation mode setting of the battery securing function 22 of the mobile terminal 100 according to the first embodiment of the present invention. FIG. 5 is a diagram for explaining the transition of the operation permission state list 34 when the battery remaining amount is reduced. The operation will be described below with reference to FIGS.

  The battery securing function 22 is periodically activated to check the remaining battery level and set the operation mode. Here, the term “regular” means that the battery remaining amount gradually decreases and the operation ensuring time of the battery remaining amount securing list 32 can be accurately detected. For example, the camera function operation securing time is 0.5 hour. Can be activated with a period of about 1 minute or several tens of seconds as a period that can be accurately detected.

  First, the current battery remaining amount (%) of the battery 4 is acquired from the battery remaining amount acquiring function 23, and the operation remaining time ratio (%) of the acquired battery remaining amount and the remaining amount in the normal mode in the battery remaining amount securing list 32 is obtained. Compare Then, a function in which the current battery remaining amount is less than or equal to the remaining amount in the normal mode registered in the battery remaining amount securing list 32 is extracted (step S11).

  If it is determined in step S11 that there is no corresponding function, that is, if the current battery level for all functions exceeds the value set for the remaining battery level in the normal mode in the battery level securing list 32 Then, the operation mode of all functions in the operation permission state list 34 is set to the normal mode (step S12).

  On the other hand, when a function whose battery remaining amount (%) is equal to or less than the remaining amount in the normal mode is extracted in step S11, the function with the highest priority is specified among the extracted functions, and the operation permission state list 34, if this function has a power saving mode, the operation mode registered in the operation permission state list 34 is set to the power saving mode, and the power saving mode is set. If not, the operation mode registered in the operation permission state list 34 is set to the normal mode (step S13).

  Further, for all functions (four in this example), the operation mode of the function with the lower priority than the function with the highest priority specified in S13 is set to the operation disabled mode (step S14). For all functions, the function with the higher priority than the function with the highest priority specified in S13 is set to the normal mode (step S15).

  Note that when the power saving mode is set in advance by the user, the power saving mode is maintained. That is, not only can the operation of the function set by the user be ensured to some extent, but the higher priority function can be used with the user's intention.

  In step S15, the function having the higher priority than the function having the highest priority in S13 is set to the normal mode to improve the convenience of being used by the user. However, if the user has the power saving mode, the power saving mode is provided. You may change the setting. In this way, the operation can be guaranteed for a time closer to the operation ensuring time of the function specified in step S13.

Hereinafter, the transition of the remaining amount of the battery 4 and the transition of the operation mode of the operation permission state list 34 shown in steps S11 to S15 will be specifically described.
The operation securing time ratio (%) set as the remaining battery amount in the normal mode in the battery remaining capacity securing list 32 is 20% of the video playback function in descending order as the remaining capacity ratio corresponding to the operation securing time set by the user. 15% of the call function, 10% of the mail function, and 5% of the camera function are initially set. Note that the moving image playback function registered in the remaining battery charge list 32 is the operation mode of the moving image processing control function 24, the mail function is the operation mode of the mail processing control function 25, and the call function is the operation mode of the call processing function 26. The camera function indicates mode information that defines the operation mode of the camera control function 27.

(Battery 11 remaining between 100% and over 20%)
Since the battery securing function 22 is periodically activated, the remaining amount of the battery 11 can take various values when activated. If the remaining amount of the battery 11 is each value such as 100%,..., 90%,..., 30%,. The battery securing function 22 is “no corresponding function”, that is, the current battery remaining capacity exceeds all of the operation securing time ratios (%) set in the normal mode remaining capacity list of the battery remaining capacity securing list 32. In step S12, the operation mode of each function is set to the normal mode. As a result, the normal mode state illustrated in the “remaining amount of 100 to 20” column of the operation permission state list 34 of FIG.

(Battery 11 remaining between 20% and 15%)
After that, when the battery is consumed and the remaining amount is, for example, 20%, 19%, 18%, 17%, 16% (over 15%), etc., in step S11, the battery securing function 22 A function whose remaining amount is set to 20%, that is, a moving image playback function is extracted. In step S13, since the video playback function has the power saving mode, the battery securing function 22 sets the video playback function in the operation permission state list 34 to the power saving mode and guarantees the operation securing time (FIG. 5). The portion shown in the double frame in the “remaining amount 20 to more than 15” column of the operation permission state list 34).

  In step S14, the battery securing function 22 sets the fourth priority camera function lower than the third priority moving image playback function to the inoperable mode, and in step S15, the first priority mail function and priority. The second call function is set to the normal mode, and the operation mode based on the priority is set (the portion illustrated by the single frame in the “remaining amount 20 to 15” column of the operation permission state list 34 in FIG. 5).

(Battery 11 remaining between 15% and 10%)
Thereafter, when the battery is further consumed and the remaining amount is, for example, each value such as 15%, 14%, 13%, 12%, 11% (over 10%), in step S11, the battery securing function 22 Two functions are extracted: a function that cannot satisfy the operation securing time set in the remaining amount securing list 32, that is, a video playback function that is set to 20% and a call function that is set to 15%. To do. As a result, in step S <b> 13, the battery securing function 22 checks the priority list 31 for the higher priority function of the two functions, and confirms that the call function has the second highest priority. Then, since the call function does not have the power saving mode, the battery securing function 22 sets the call function in the operation permission state list 34 to the normal mode and guarantees the operation securing time (in the operation permission state list 34 of FIG. 5). The portion shown by the double frame in the “Remaining 15 to 10” column).

  Also, in step S14, the battery securing function 22 sets the third priority video playback function and the fourth priority camera function to the inoperable mode, which are lower than the priority second call function. Similarly to the above, in step S15, the battery securing function 22 sets the mail function with the highest priority to the normal mode, and sets the operation mode based on the priority ("Remaining amount in the operation permission state list 34 in FIG. 5"). The portion shown in a single frame in the “15 to 10” column).

(Battery 11 remaining between 10% and more than 5%)
Further, when the battery is consumed and the remaining amount is, for example, 10%, 9%, 8%, 7%, 6% (over 5%) or the like, in step S11, the battery securing function 22 A function that cannot satisfy the operation securing time set in the amount securing list 32, that is, a video playback function in which 20% is set, a call function in which 15% is set, and 10% is set. The three functions of the mail function are extracted. In step S13, the battery securing function 22 checks the function with the highest priority among these three functions with reference to the priority list 31, and confirms that it is the mail function with the highest priority. . Since the mail function has the power saving mode, the mail function of the operation permission state list 34 is set to the power saving mode to guarantee the operation securing time (“remaining amount 10 to 10 in the operation permission state list 34 of FIG. 5). The part shown by the double frame in the “Over 5” column).

  In step S14, the battery securing function 22 sets the second priority call function, the third priority video playback function, and the fourth priority camera function to the inoperable mode, which are lower than the first priority mail function. The operation mode based on the priority is set (the portion illustrated by the single frame in the “remaining amount of over 10-5” column of the operation permission state list 34 in FIG. 5). In this case, since there is no function having a higher priority than the mail function, the operation in step S15 is not substantially performed.

(Battery 11 is 5% or less)
Thereafter, when the battery is further consumed and the remaining battery level is, for example, each value such as 5%, 4%, 3%, 2%, 1%, 0%, etc., within the range in which the control unit 2 can operate, step S11. The battery securing function 22 detects that all the functions of the video playback function, the telephone call function, the mail function, and the camera function cannot satisfy the operation securing time. Therefore, in step S13, the battery securing function 22 checks the highest priority function among the four functions with the priority list 31, and confirms that it is the mail function with the highest priority. Since the mail function has the power saving mode, the mail function of the operation permission state list 34 is set to the power saving mode permission, and the operation securing time is guaranteed (the “remaining state of the operation permission state list 34 in FIG. The portion shown by the double frame in the column “5 to 0%”).

  In step S14, other functions lower than the mail function with the highest priority, that is, the call function, the video playback function, and the camera function are set to the inoperable mode, and the operation mode based on the priority is set (FIG. 5). The portion shown in the single frame of the “remaining amount 5 to 0%” column of the operation permission state list 34). Further, since there is no higher priority function than the mail function unit 18 with the highest priority, the operation of step S15 is not substantially performed.

  As a result, as shown in the operation mode of the operation permission state list 34 in FIG. 5, as the remaining battery level decreases, the function for which the operation securing time should be guaranteed changes as indicated by a double frame. As for other functions, the operation mode based on the priority changes as shown in a single frame.

  In addition, although the battery remaining amount has been described step by step until it gradually decreases from 100% to 0%, not only when the remaining amount is decreased, but also when the remaining amount is increased by charging the battery, Is checked, and the processing is distributed according to the processing of steps S11 to S15, so that it is possible to transition from each state shown in the operation mode of the operation permission state list 34 in FIG. 5 to an arbitrary state. For example, a transition can be made directly from the “remaining amount over 10-5” column to the “remaining amount over 100-20” column.

  Next, step S16 will be described. The battery securing function 22 reads the operation status list 35 and confirms the function being operated and whether this function is operating in the normal mode or the power saving mode. Then, it is checked whether the operation mode of the function being operated matches the operation mode of the operation permission state list 34. If the operation mode does not match, the function being operated is set in order to guarantee the operation securing time set by the user. On the other hand, the operation mode of the operation permission state list 34 is notified (step S16), and the change of the operation mode is instructed.

  The function under operation that has received this instruction ends the operation if the instructed operation mode is the inoperable mode, and changes to the power saving mode if the instructed operation mode is the power saving mode. To do. There can also be a change in the opposite direction. In addition, when changing, the control part 2 controls the display control part 5, and alert | reports that the operation mode changed to the user via the display part 9. FIG.

  FIG. 6 is a flowchart showing an operation related to “permission status notification” of the battery securing function 22 of the portable terminal according to the first and second embodiments of the present invention, and there is an inquiry from each function to the battery securing function 22 at the start of the operation. The “permitted status notification” is executed.

  In addition, notification of the permission state from the battery securing function 22 to each function, that is, the moving image processing control function 24, the mail processing control function 25, the call processing function 26, and the camera control function 27 is shown in step S16 of FIG. In addition, an instruction to change the operation mode that is constantly changing in accordance with the change in the remaining battery level is issued as needed for the function being operated.

  In FIG. 6, when each function starts operation, an inquiry is made to the battery securing function 22 in order to confirm its permitted operation mode.

  When there is an inquiry about the operation mode, the battery securing function unit 22 first checks the operation mode of the operation permission state list 34 for the function with the inquiry (step S21).

  If the operation mode of the operation permission state list 34 is the normal mode for the function inquired in step S21, the name and normal state of the function inquired are registered in the operation status list 35 (step S23). . Then, the function that has been inquired is notified of the normal mode (step S24), and the process ends.

  If the operation mode state of the operation permission state list 34 is set to the operation disabled mode for the function that has been inquired in step S21, the operation disabled mode state is notified to the function that has been inquired. (Step S25), and the process ends.

  Furthermore, if the operation mode of the operation permission state list 34 is the power saving mode for the function that has been inquired in step S21, the name of the inquired function and the power saving mode are registered in the operation state list 35. (Step S26). Then, the power saving mode is notified to the inquired function (step S27), and the process ends.

  As described above, according to the first embodiment of the present invention, after the time when the remaining battery level reaches a limit that can guarantee the operation securing time that is initially set for a certain function F, the user operates the function F alone. If the function F has only the normal mode, the operation ensuring time is guaranteed in the normal mode, and if the function F has the power saving mode, the operation saving time can be guaranteed. It is possible to automatically switch to the power mode and guarantee a longer time than the operation securing time.

  In addition, after the battery level reaches a limit that can guarantee the operation securing time that is initially set for a certain function F, the operation of another function with a priority lower than the priority of the function F is performed. Prohibit automatically. In addition, after the battery level reaches the limit that can guarantee the operation securing time that is initially set for the function F, the operation is permitted for other functions that have a higher priority than that of the function F. By doing so, it is possible to use the function with higher priority at the user's judgment while guaranteeing the operation of the function F to some extent.

  FIG. 7 is an operation flowchart regarding the remaining battery level check and the operation mode setting of the battery securing function 22 of the mobile terminal 100 according to the second embodiment of the present invention. FIG. 8 is a diagram for explaining the transition of the operation permission state list 34 when the battery remaining amount is reduced. 1 to 3 and 6 are common to the first and second embodiments.

  In the first embodiment (FIGS. 4 and 5), after the battery level set for a certain function F is reached, the function having a lower priority than that function F is automatically prohibited from functioning. Operation was allowed for higher priority functions.

  In the second embodiment, after the battery level set for a certain function F is reached, the function F is automatically set to the power saving mode to extend the operation securing time. Is also permitted to operate.

  The battery securing function 22 is periodically activated to check the remaining battery level and set the operation mode. First, the current battery remaining amount (%) of the battery 4 is acquired from the battery remaining amount acquiring function 23, and the acquired battery remaining amount and the remaining amount in the normal mode and the power saving mode in the battery remaining amount securing list 32 are displayed. Compare operation securing time ratio (%). Then, functional blocks whose current remaining battery level is less than or equal to the remaining battery level in the normal mode and the remaining power level in the power saving mode registered in the remaining battery level securing list 32 are extracted (step S31).

  If it is determined in step S31 that there is no corresponding function, that is, the current remaining battery level for all functions is set as the remaining amount in the normal mode and the power saving mode in the remaining battery level securing list 32. If the value is exceeded, the operation mode of all functions in the operation permission state list 34 is set to the normal mode (step S32).

  On the other hand, if the corresponding functional block is present in step S31, it is next determined whether the remaining battery level in the normal mode or the power saving mode corresponds to the remaining battery level securing list 32 (step S33). . The remaining amount in the normal mode of the battery remaining amount securing list 32 is 20%, 15%, 10%, 5%, and the remaining amount in the power saving mode is 8.6%, 7.5%, 2.5%. Therefore, when the remaining battery level is 20% to more than 8.6%, “applicable only to the remaining battery level in normal mode”, and when the remaining battery level is 8.6% to 0%, It is judged that it corresponds to the quantity.

  In the case of “applicable only to the remaining amount in the normal mode” in step S33 (the remaining battery level is 20% to more than 8.6%), the extracted function is identified with the highest priority function and the operation If this function has a power saving mode with reference to the ownership mode recorded in advance in the permission state list 34, the operation mode registered in the operation permission state list 34 is set to the power saving mode, and the power saving mode is saved. If it does not have the power mode, the normal mode registered in the operation permission state list 34 is set (step S34).

  Furthermore, regarding all the functions (four in this example), when the function with the highest priority specified in S34 is set to the power saving mode, the operation securing time of the function is extended. When the operation mode is set to the normal mode or the power saving mode and the function with the highest priority specified in S34 is set to the normal mode, the operation securing time of the function does not extend, so that the function with a lower priority than this The operation mode is set to the operation disable mode (step S35). For all functions, a function block having a higher priority than the function having the highest priority specified in S34 is set to the normal mode (step S36).

  In step S36, the function with higher priority than the function with the highest priority specified in step S34 is set to the normal mode to improve the convenience of being used by the user's intention. The setting may be changed to the mode. In this way, the operation can be guaranteed for a time closer to the operation securing time of the function specified in step S34.

  In the case of “corresponding to the remaining amount in the power saving mode” (battery remaining amount is 8.6% to 0%) in the previous step S33, the highest priority among the functions corresponding to the remaining amount in the power saving mode The function is specified, and the operation mode of this function registered in the operation permission state list 34 is set to the power saving mode (step S37).

  Further, for all functions, the operation mode of the function having a lower priority than the function having the highest priority specified in S37 is set to the operation disabled mode. (Step S38). Thereby, regarding the functional block with the highest priority in step S37, the operation securing time can be guaranteed in the power saving mode.

  For all functions, a function having a higher priority than the function having the highest priority specified in S37 is set to the normal mode. (Step S39).

  Hereinafter, the transition of the remaining amount of the battery 4 and the transition of the operation mode of the operation permission state list 34 shown in steps S31 to S39 will be specifically described. The operation securing time ratio (%) set in the battery remaining capacity securing list 32 is the remaining capacity ratio corresponding to the operation securing time set by the user. The call function is set to 15%, the mail function is set to 10%, and the camera function is set to 5%. The remaining amount in the power saving mode is 8.6% of the video playback function in descending order, and the call function has a power saving mode section. Since there is no remaining capacity ratio, the initial setting is 7.5% for the mail function and 2.5% for the camera function.

(Battery 11 remaining between 100% and over 20%)
When the battery 11 is consumed from the fully charged state and the remaining amount is each value such as 100%,..., 90%,..., 30%,. , The battery securing function 22 is “corresponding function block”, that is, the operation securing time ratio (the current battery remaining amount is set to the remaining amount in the normal mode and the remaining amount in the power saving mode of the remaining battery securing list 32 ( %) Is exceeded, and the operation mode of each function is set to the normal mode in step S32. Accordingly, the normal mode state illustrated in the “remaining amount of 100 to 20” column of the operation permission state list 34 of FIG. 8 is set.

(Battery 11 remaining between 20% and 15%)
After that, if the battery is consumed and the remaining amount is, for example, 20%, 19%, 18%, 17%, 16% (over 15%) or the like, in step S31, the battery securing function 22 A function whose remaining amount is set to 20%, that is, a moving image playback function is extracted. In step S33, the battery securing function 22 determines that “only applicable to the remaining amount in the normal mode”. In step S34, the function having the highest priority among the corresponding functions is specified as the video playback function. Since the video playback function has the power saving mode, the video playback function in the operation permission state list 34 is set to the power saving mode to extend the operation securing time and to guarantee the operation securing time (the operation permission state list 34 in FIG. 8). In the “Remaining amount 20 to 15” column).

  In step S35, the battery securing function 22 puts the camera function with the fourth priority lower than the video function with the third priority into the operation permitted state (in this example, the power saving mode). In step S36, the battery securing function 22 sets the mail function with the first priority and the call function with the second priority to the normal mode, and sets the operation mode based on the priority (in the operation permission state list 34 of FIG. 8). The part shown in a single frame in the “Remaining amount 20 to 15” column).

(Battery 11 remaining between 15% and 10%)
Thereafter, when the battery is consumed and the remaining amount is, for example, 15%, 14%, 13%, 12%, 11% (over 10%) or the like, in step S31, the battery securing function 22 The video playback function function whose remaining amount is set to 20% and the call function whose remaining amount in the normal mode is set to 15% are extracted. In step S33, the battery securing function 22 determines that “only applicable to the remaining amount in the normal mode”. In step S34, the battery securing function 22 checks the function with the highest priority of the two functions with the priority list 31 and specifies that the call function has the second highest priority. Since the function does not have the power saving mode, the call function in the operation permission state list 34 is set to the normal mode, and the operation ensuring time is guaranteed (the “remaining amount 15 to 10” column of the operation permission state list 34 in FIG. 8). Part shown in double frame).

  In step S35, the battery securing function 22 has a lower priority 3rd video function and a 4th priority priority than the 2nd priority call function in order to guarantee the operation securing time in the normal mode of the call function. Set the camera function to disabled mode. In step S36, the battery securing function 22 sets the mail function having the highest priority to the normal mode and sets the operation mode based on the priority ("remaining amount 15 to 10" in the operation permission state list 34 in FIG. 8). The part shown in the single frame of the column).

(Battery 11 remaining between 10% and over 8.6%)
Thereafter, when the battery is consumed and the remaining amount is, for example, each value such as 10%, 9%, 8.7% (over 8.6%), the battery securing function 22 determines the remaining amount in the normal mode in step S31. Is extracted, a call function in which the remaining amount in the normal mode is set to 15%, and a mail function in which the remaining amount in the normal mode is set to 10%. In step S33, the battery securing function 22 determines that “only applicable to the remaining amount in the normal mode”. In step S34, the battery securing function 22 checks the highest priority function among the three functions in the priority list 31, specifies that it is the mail function with the highest priority, Since the function has a power saving mode, the operation mode of the mail function in the operation permission state list 34 is set to the power saving mode, and the operation securing time is guaranteed (“remaining amount 10 to 10 in the operation permission state list 34 in FIG. 8). The portion shown by the double frame in the column “Over 8.6”).

  In step S35, the battery securing function 22 sets the second priority call function, the third priority video playback function, and the fourth priority camera function to the power saving mode or the lower priority mail function. The operation mode is set in the normal mode, and the operation mode based on the priority is set (the portion illustrated by the single frame in the “remaining amount 10 to 8.6” column of the operation permission status list 34 in FIG. 8). In step S36, there is no functional block with a higher priority than the mail unit 18 with the highest priority.

(Battery 11 remaining between 8.6% and over 7.5%)
After that, when the battery is consumed and the remaining amount is, for example, each value such as 8.6%, 8%, 7.6% (over 7.5%), in step S31, the battery securing function 22 A video playback function in which the remaining amount is set to 20%, a call function in which the remaining amount in the normal mode is set to 15%, a mail function in which the remaining amount in the normal mode is set to 10%, and saving The moving image playback function in which the remaining amount in the power mode is set to 8.6% is extracted. In step S <b> 33, the battery securing function 22 determines that “corresponding to the remaining amount in the power saving mode”. In step S37, the battery securing function 22 identifies the function corresponding to the remaining power in the power saving mode as the highest priority because there is only one moving image playback function with the third highest priority. The operation mode of the video playback function is set to the power saving mode, and the operation securing time is guaranteed (the portion illustrated by the double frame in the “remaining amount 8.6 to 7.5” column of the operation permission state list 34 in FIG. 8). .

  In step S38, the battery securing function 22 sets the fourth priority camera function lower than the third priority moving image playback function to the operation disabled mode. In step S39, the battery securing function 22 sets the first priority mail function and the second priority call function higher than the third priority video playback function to the normal mode, and sets the operation mode based on the priority. (The portion illustrated by the single frame in the “remaining amount 8.6 to 7.5” column of the operation permission state list 34 in FIG. 8).

(Battery 11 remaining between 7.5% and over 5%)
Thereafter, when the battery is consumed and the remaining amount is, for example, each value such as 7.5%, 7%, 6% (over 5%), the battery securing function 22 determines that the remaining amount in the normal mode is 20 in step S31. Video playback function set to%, call function set to 15% remaining in normal mode, mail function set to 10% remaining in normal mode, and remaining in power saving mode The moving image playback function whose amount is set to 8.6% and the mail function whose remaining amount in the power saving mode is set to 7.5% are extracted. In step S <b> 33, the battery securing function 22 determines that “corresponding to the remaining amount in the power saving mode”. In step S37, the battery securing function 22 has the highest priority mail function among the two functions of the video playback function and the mail function corresponding to the remaining amount in the power saving mode. And the operation mode of the mail function in the operation permission state list 34 is set to the power saving mode, and the operation securing time is guaranteed (two in the “Remaining 7.5 to 5” column of the operation permission state list 34 in FIG. 8). The part shown with a heavy frame).

  In step S38, the battery securing function 22 sets all the functional blocks lower than the mail function with the first priority to the inoperable mode. In step S39, the battery securing function 22 is higher than the mail function with the first priority. Recognizing that there is no priority, an operation mode based on the priority is set (the portion illustrated by a single frame in the “remaining amount of 7.5 to 5” column of the operation permission state list 34 in FIG. 8).

(Battery 11 remaining between 5% and over 2.5%)
After that, when the battery is consumed and the remaining amount is, for example, each value such as 5%, 4%, 3%, 2.6% (over 2.5%), in step S31, the battery securing function 22 A video playback function in which the remaining time is set to 20%, a call function in which the remaining amount in the normal mode is set to 15%, a mail function in which the remaining amount in the normal mode is set to 10%, Camera function in which the remaining amount in the normal mode is set to 5%, a video playback function in which the remaining amount in the power saving mode is set to 8.6%, and the remaining amount in the power saving mode to 7.5% Extract the configured mail function. In step S <b> 33, the battery securing function 22 determines that “corresponding to the remaining amount in the power saving mode”. In step S37, the battery securing function 22 has the highest priority mail function among the two functions of the video playback function and the mail function corresponding to the remaining amount in the power saving mode. The operation mode of the mail function in the operation permission state list 34 is set to the power saving mode, and the operation securing time is guaranteed (two in the “remaining amount 5 to 2.5” column of the operation permission state list 34 in FIG. 8). The part shown with a heavy frame).

  In step S38, the battery securing function 22 sets all the functional blocks lower than the mail function with the first priority to the inoperable mode. In step S39, the battery securing function 22 is higher than the mail function with the first priority. Recognizing that there is no priority, an operation mode based on the priority is set (the portion illustrated by a single frame in the “remaining amount of over 5 to 2.5” column of the operation permission state list 34 in FIG. 8).

(Battery 11 remaining between 2.5% and 0%)
Thereafter, when the battery is consumed and the remaining amount is, for example, 2.5%, 2%, 1%, 0%, or the like, the battery securing function 22 is set in step S31 within a range where the control unit 2 can operate. , A video playback function in which the remaining amount in the normal mode is set to 20%, a call function in which the remaining amount in the normal mode is set to 15%, and an email in which the remaining amount in the normal mode is set to 10% Functions, a camera function in which the remaining amount in the normal mode is set to 5%, a video playback function in which the remaining amount in the power saving mode is set to 8.6%, and a remaining amount in the power saving mode are set to 7. The mail function set to 5% and the camera function whose remaining amount in the power saving mode is set to 2.5% are extracted. In step S <b> 33, the battery securing function 22 determines that “corresponding to the remaining amount in the power saving mode”. In step S37, the battery securing function 22 has the highest priority among the three functions of the video playback function, the mail function, and the camera function corresponding to the remaining power in the power saving mode. Is specified, the operation mode of the mail function in the operation permission state list 34 is set to the power saving mode, and the operation securing time is guaranteed (“remaining amount 2.5 to 0%” in the operation permission state list 34 in FIG. 8). The part shown in the double frame in the column).

  In step S38, the battery securing function 22 sets all the functional blocks lower than the mail function with the first priority to the inoperable mode. In step S39, the battery securing function 22 is higher than the mail function with the first priority. Recognizing that there is no priority, an operation mode based on the priority is set (the portion illustrated by a single frame in the “remaining amount 2.5 to 0%” column of the operation permission state list 34 in FIG. 8).

  As a result, as shown in the operation mode of the operation permission state list 34 in FIG. 8, as the remaining battery level decreases, the function for which the operation securing time should be guaranteed changes as shown by a double frame. As for other functions, the operation mode based on the priority changes as shown in a single frame.

  In addition, although the battery remaining amount has been described step by step until it gradually decreases from 100% to 0%, not only when the remaining amount is decreased, but also when the remaining amount is increased by charging the battery, Is checked, and the process is distributed according to the processes in steps S31 to S39. Therefore, it is possible to transition from each state shown in the operation mode of the operation permission state list 34 in FIG. 8 to an arbitrary state. For example, it is possible to directly shift from the “remaining amount of 7.5 to 5” column to the “remaining amount of 20 to 15” column.

  Next, step S40 will be described. This part is the same as step S16 of FIG. The battery securing function 22 reads the operation status list 35 and confirms the function being operated and whether this function is operating in the normal mode or the power saving mode. Then, it is checked whether the operation mode of the function being operated matches the operation mode of the operation permission state list 34. If the operation mode does not match, the function being operated is set in order to guarantee the operation securing time set by the user. On the other hand, the operation mode of the operation permission state list 34 is notified (step S40), and the change of the operation mode is instructed.

  The function under operation that has received this instruction ends the operation if the instructed operation mode is the inoperable mode, and changes to the power saving mode if the instructed operation mode is the power saving mode. To do. There can also be a change in the opposite direction. In addition, when changing, the control part 2 controls the display control part 5, and alert | reports that the operation mode changed to the user via the display part 9. FIG.

  As described above, according to the second embodiment of the present invention, the function F is only in the normal mode after the time when the remaining battery capacity is guaranteed to guarantee the operation securing time initially set for the function F in the normal mode. If this is the case, the operation securing time can be guaranteed in the normal mode. Also, if you have a power saving mode, automatically switch to the power saving mode to extend the operation reservation time, and instead of suddenly prohibiting the operation of other functions with lower priority, It can be used for a while after being in the power saving mode or normal mode permission state.

  Then, when the remaining battery level is further reduced and the remaining battery level guarantees the operation reservation time initially set in function F in the power saving mode, the operation of other functions with lower priority is automatically performed. Prohibit. As a result, the operation securing time initially set for the function F is guaranteed in the power saving mode, and the operation of other functions with low priority can be used in the power saving mode or the normal mode for a while.

  In addition, after the battery level reaches the limit that can guarantee the operation securing time that is initially set for the function F, the operation is permitted for other functions that have a higher priority than that of the function F. By doing so, it is possible to use the function with higher priority at the user's judgment while guaranteeing the operation of the function F to some extent.

The block diagram of the portable terminal which concerns on Example 1 and 2 of this invention. A priority list 31, a battery remaining amount securing list 32, a maximum operation time list 33, an operation permission state list 34, and an operation state list 35 stored in the storage unit 3 of the portable terminal according to the first and second embodiments of the present invention Illustration to explain. The operation | movement flowchart of the battery reserved value setting function 21 of the portable terminal which concerns on Example 1 and 2 of this invention. The flowchart which shows the operation | movement regarding the battery remaining amount check of the battery securing function 22 of the portable terminal which concerns on Example 1 of this invention, and the setting of an operation mode. The figure explaining transition of the operation permission state list | wrist 34 in the battery residual amount reduction | decrease of the portable terminal which concerns on Example 1 of this invention. The flowchart which shows the operation | movement regarding the "notification of permission state" of the battery securing function 22 of the portable terminal which concerns on Example 1 and 2 of this invention. The operation | movement flowchart regarding the battery remaining amount check of the battery ensuring control function 22 of the portable terminal which concerns on Example 2 of this invention, and the setting of an operation mode. The figure explaining transition of the operation permission state list | wrist 34 in the battery remaining charge reduction of the portable terminal which concerns on Example 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key operation part 2 Control part 21 Battery securing value setting function 22 Battery securing function 23 Battery residual quantity acquisition function 24 Movie processing control function 25 Mail processing control function 26 Call processing function 27 Camera control function 3 Storage part 31 Priority list 32 Battery Remaining amount securing list 33 Maximum operation time list 34 Operation permission state list 35 Operation state list 4 Battery 5 Display control unit 6 Image processing unit 7 Audio processing unit 8 Camera 9 Display unit 10 Microphone 11 Speaker 12 Wireless transmission / reception unit 13 Antenna 14 Switch circuit 100 Mobile terminal

Claims (2)

In a mobile terminal equipped with a function to execute multiple applications,
A battery for supplying power;
A battery level measuring unit for measuring the battery level of the battery;
Storage means for storing a priority level for each application and a battery remaining amount reference value corresponding to the operation securing time set for each application;
A comparison means for comparing the battery remaining amount measured by the battery remaining amount measuring unit with a battery remaining amount reference value stored in the storage means;
When it is detected that the remaining battery level measured by the comparing means is equal to or lower than the remaining battery level reference value, a priority lower than the stored priority level is set corresponding to the remaining battery level reference value. And a control means for controlling the specified application to stop the operation of the specified application. At least one application of the plurality of applications has a normal mode and a power saving mode in which power consumption is suppressed compared to the normal mode,
The control means, when an application corresponding to a battery remaining amount reference value detected by the comparison means has a power saving mode, switches the mode of this application to the power saving mode. The mobile terminal according to 1.

Images