JP2007329523A - Mobile terminal, and power reduction method and program in mobile terminal lock release state - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology of reducing the power consumption of a display section and a backlight of a mobile terminal in its lock release state. <P>SOLUTION: The mobile terminal starts counting a lock duration time in its lock setting state, completes the count to acquire the lock duration time in its lock release state, collates the lock duration time with a preset lock duration time threshold value, detects the presence/absence of a key operation and counts a time until a key is operated in its lock release state, and the mobile terminal controls a display time of a liquid crystal display section 1 and a lighting time of the backlight 4 in its lock release state to be a first setting time when the lock duration time is the lock duration time threshold value or over or when a key is operated within a prescribed time and less than the lock duration time threshold value, and to be a second setting time when the lock duration time is the lock duration time threshold value or over or when no key is operated within a prescribed time and less than the lock duration time threshold value. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a portable terminal, a power reduction method and a program for unlocking a portable terminal, and more particularly to a portable terminal for controlling display time of a display unit and backlight lighting time when unlocked, and a power reduction method for unlocking a portable terminal. And program.

  An example of a portable terminal that performs display control of a display unit when unlocking is disclosed in Japanese Patent Laying-Open No. 2005-268883 (Patent Document 1). In this patent document 1, it is described that the display of the display unit and the key input of the input device are made valid when the user releases the lock state of the portable terminal with a password or the like.

Japanese Patent Laying-Open No. 2005-268883 (paragraph “0029”, FIGS. 2 and 3)

  In Patent Document 1 described above, there is a description that the display on the display unit is validated when the mobile terminal is unlocked, but nothing is said about the validation time or the like. For example, even when the user does not plan to use the mobile terminal and sets the mobile terminal to the locked state, the user may want to refer to the mobile terminal instead of the clock to check the time. In such a case, the user confirms the current time displayed on the display unit by releasing the lock. In this case, an operation such as key input is not necessary, and it is sufficient that the time displayed on the display unit is simply viewed. Therefore, it is sufficient that the display on the display unit is valid for only a few seconds. However, the unlocking is performed not only for referring to the time but also for performing operations such as key input, and in the case of performing the operation, it is necessary to validate the display of the time display unit longer than the time display reference. From this point of view, it is desirable that the effective time of the display unit can be variably controlled when unlocking the time when the lock is released, and in other cases, so that the power consumption when using the mobile terminal instead of the watch can be reduced. It becomes possible to reduce.

  The objective of this invention is providing the power reduction method and program at the time of the portable terminal which cancels the above subject, and a portable terminal lock release.

  The first portable terminal of the present invention includes means for counting a lock duration from when a lock is set to when the lock is released, means for comparing a lock duration with a preset lock duration threshold, and when unlocking When the lock duration time is equal to or greater than the lock duration threshold, the display time of the display unit and the backlight lighting time are controlled at the first set time, and when the lock duration is less than the lock duration threshold, the second set time, respectively. Means.

  The second portable terminal of the present invention includes means for detecting presence / absence of a key operation at the time of unlocking, a display time of the display unit at the time of unlocking and a backlight according to the presence / absence of key operation within a predetermined time from the unlocking. Means for determining the lighting time.

  The third portable terminal according to the present invention is configured to display and start lighting the display time of the display unit and the lighting time of the backlight as the second set time when unlocking, and means for detecting the presence or absence of key operation when unlocking And means for counting the time from unlocking to key operation, and when the key operation is performed within a predetermined time from unlocking, the display time of the display unit and the lighting time of the backlight are set to the second set time. Means for changing the display time to the first set time to display and light up, and when the key operation is not performed within a predetermined time from unlocking, the display time of the display unit and the lighting time of the backlight are And a means for displaying and lighting as it is for the set time.

  The fourth portable terminal of the present invention includes means for counting a lock duration from when the lock is set to when the lock is released, means for detecting the presence or absence of a key operation when the lock is released, and a time from the lock release to the key operation. Means for counting, and means for determining the display time of the display section and the lighting time of the backlight at the time of unlocking according to the combination of the lock duration time and the presence or absence of key operation within a predetermined time from unlocking.

  The fifth portable terminal of the present invention includes a means for counting a lock duration from a lock setting time to a lock release time, a means for collating the lock duration time with a preset lock duration threshold value, Means for detecting presence / absence of key operation, means for counting time from unlocking to key operation, and display duration and backlight lighting time when unlocking, lock duration time is greater than lock duration threshold Or when the key operation is performed within a predetermined time less than the lock duration threshold, and when the key operation is not performed within the predetermined time less than the lock duration threshold. And a control means for each of the two set times.

  The sixth portable terminal of the present invention includes means for detecting the presence / absence of an application that is operating or interrupted at the time of unlocking, the display time of the display unit and the lighting time of the backlight at the time of unlocking according to the presence / absence of the application Means for determining.

  According to a seventh portable terminal of the present invention, in the first, third, or fifth portable terminal of the present invention, the second set time is shorter than the first set time. .

  An eighth mobile terminal of the present invention is the mobile terminal according to any one of the first to seventh aspects of the present invention, wherein the mobile terminal is a touch panel type mobile terminal, and the lock is a lock of a touch panel operation unit. To do.

  The first portable terminal unlocking power reduction method of the present invention includes a step of starting counting of a lock duration time when a lock is set, a step of ending counting when the lock is released, and from the time of lock setting to the time of unlocking The lock duration time is locked to the step of acquiring the lock duration time, the step of collating the lock duration time with a preset lock duration threshold value, the display time of the display unit and the lighting time of the backlight when unlocking. A step of controlling at a first set time if the duration is equal to or greater than the threshold, and a step of controlling at a second set time if it is less than the lock duration threshold.

  According to a second method for reducing power when unlocking a portable terminal of the present invention, the display time of the display unit and the lighting time of the backlight are displayed as a second set time when the lock is released, and lighting starts. The step of detecting presence / absence of operation, the step of counting the time from unlocking to key operation, and the display time and backlight lighting time when key operation is performed within a predetermined time from unlocking Is changed from the second set time to the first set time for display and lighting, and when no key operation is performed within a predetermined time from unlocking, the display time of the display unit and the backlight Displaying and lighting the lighting time as it is with the second set time.

  The third power-removing method of the present invention for unlocking a mobile terminal includes a step of starting counting of the lock duration time when the lock is set, a step of ending the count when unlocking, and from the time of lock setting to the time of unlocking A step of acquiring a lock duration, a step of comparing a lock duration with a preset lock duration threshold, a step of detecting presence / absence of a key operation when unlocking, and a time from unlocking to key operation. When the lock duration is greater than or equal to the lock duration threshold, or when the lock duration is less than the lock duration threshold, the key operation is performed within the predetermined time. In the case of a failure, no key operation is performed within a predetermined time that is less than the lock duration threshold during the first set time. If Tsu the second set time, and a step of controlling, respectively.

  According to a fourth portable terminal unlocking power reduction method of the present invention, there is provided a step of detecting presence / absence of an application that is operating or interrupted at the time of unlocking, and display of a display unit at the time of unlocking according to the presence / absence of the application Determining a time and a lighting time of the backlight.

  The first program of the present invention includes a function for counting a lock duration time from when a lock is set to when the lock is released, a function for checking a lock duration time with a preset lock duration threshold value, and a display unit when the lock is released A function for controlling the display time and the backlight lighting time at the first set time when the lock duration is equal to or greater than the lock duration threshold, and at the second set time when less than the lock duration threshold, Is realized on a computer.

  The second program of the present invention displays a display time of a display unit and a lighting time of a backlight as a second set time when unlocking, a function of starting lighting, a function of detecting presence / absence of key operation when unlocking, a lock A function that counts the time from release to key operation, and when the key operation is performed within a predetermined time from unlocking, the display time of the display unit and the lighting time of the backlight are changed from the second set time to the first The function of displaying and lighting after changing to the set time, and when the key operation is not performed within a predetermined time after unlocking, the display time of the display unit and the lighting time of the backlight remain as the second set time The computer realizes the display and lighting functions.

  The third program of the present invention includes a function for counting the lock duration from when the lock is set to when the lock is released, a function for checking the lock duration and a preset lock duration threshold, A function to detect the presence / absence, a function to count the time from unlocking to key operation, the display time of the display unit at the time of unlocking and the lighting time of the backlight when the lock duration is equal to or greater than the lock duration threshold, or If the key operation is performed within a predetermined time within a predetermined time less than the lock duration threshold, the second set time is used when the key operation is not performed within the predetermined time less than the lock duration threshold. , Each control function is realized by a computer.

  The fourth program of the present invention determines the presence / absence of an application that is operating or interrupted at the time of unlocking, and determines the display time and backlight lighting time at the time of unlocking according to the presence / absence of the application. Function to perform on a computer.

  In the present invention, when the mobile terminal is unlocked, the display time of the display unit and the backlight lighting time are variably controlled according to the lock duration time and the presence / absence of key operation. The effect of reducing power consumption can be obtained.

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

The present invention reduces power consumption by a display unit and a backlight when a mobile terminal is unlocked. About the power consumption by this display part and a backlight, since especially remarkable effect can be anticipated in the touch panel type portable terminal with a large display area compared with a normal portable terminal, it demonstrates below taking a touch panel type portable terminal as an example. The mobile terminals include mobile information terminals such as mobile phones, PHS (Personal Handyphone System), PDA (Personal Digital Assistance).

  FIG. 1 is a diagram illustrating a configuration of a mobile terminal according to the first embodiment of this invention. The portable terminal includes a liquid crystal display unit 1, a liquid crystal drive control unit 2, a touch panel operation unit 3, a backlight 4, a backlight drive control unit 5, a touch panel lock operation unit 6, a clock 7, and a counter 8. , A storage unit 9, a power supply unit 10, and a control unit 11. In FIG. 1, components of the portable terminal such as an antenna, a radio unit, a speaker, and a microphone that are not directly related to the present invention are omitted. FIG. 2 is a diagram illustrating an example of the appearance of a touch panel portable terminal.

  Referring to FIG. 1, the liquid crystal display unit 1 is a liquid crystal display device that displays various types of information, and the liquid crystal drive control unit 2 controls the drive of the liquid crystal display unit 1 according to instructions from the control unit 11. The touch panel operation unit 3 is an operation unit configured by a touch panel, and the user performs operations such as key input by touching on the touch panel. The backlight 4 illuminates the liquid crystal display unit 1, and the backlight drive control unit 5 controls turning on and off of the backlight 4 according to instructions from the control unit 11. The touch panel lock operation unit 6 is an operation unit for locking the mobile terminal so as not to operate even when the touch panel operation unit 3 is touched, or for releasing the lock, and includes, for example, a slide key. The counter 8 measures the elapsed time by counting the clock 7. The storage unit 9 is a readable / writable storage device, and the first set time, the second set time, the lock duration threshold value, and the like are registered in advance by the user. Here, the first set time is the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 when the user releases the lock to operate the mobile terminal, and is, for example, 30 seconds. The second set time is the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 when the user unlocks the mobile terminal in order to view the current time, for example, 10 seconds. The lock duration threshold is determined by the control unit 11 when unlocking, when the lock duration is less than that time, refer to the time, and when the lock duration is longer than that time, the operation of the mobile terminal. For example, 60 minutes. Since time reference is considered to be frequently performed at relatively short intervals, for example, 60 minutes is assumed, but it is set to an arbitrary time according to the customs of each user. The power supply unit 10 is a battery that supplies power to the mobile terminal.

The control unit 11 is a control device such as a CPU (Central Processing Unit) and the operation is controlled by a program. The control unit 11
A function for determining that the lock state has been obtained by operating the touch panel lock operation unit 6 and instructing the counter 8 to start counting;
A function of determining that the lock is released by operating the touch panel lock operation unit 6 and instructing the counter 8 to end counting;
A function of collating the measurement time (lock duration) by the counter 8 with the lock duration threshold value registered in the storage unit 9 when unlocking;
A function of controlling the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 to be the first set time when the lock duration time is equal to or greater than the lock duration time threshold;
A function for controlling the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 to be the second set time when the lock duration is less than the lock duration threshold;
It has.

  Next, the operation of the first embodiment of the present invention will be described with reference to FIG. 1 and FIG. FIG. 3 is a flowchart showing the operation of the first exemplary embodiment of the present invention.

  Referring to FIG. 3, when the user wants to lock the mobile terminal, the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the lock side. The control unit 11 detects a lock operation by the touch panel lock operation unit 6 and puts the touch panel operation unit 3 into a locked state (step S10). Then, the control unit 11 instructs the counter 8 to start counting, and the counter 8 starts counting (Step S11).

  Next, when the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the unlock side, the control unit 11 detects the unlock operation by the touch panel lock operation unit 6. The control unit 11 that has detected the unlocking operation instructs the counter 8 to end counting, and the counter 8 ends the counting (steps S12 and S13). And the control part 11 acquires the time (lock continuation time) which the counter 8 counted, and collates with the lock continuation time threshold value (for example, 60 minutes) previously registered in the memory | storage part 9 (step S14).

  As a result of the collation in step S14, when (lock duration) <(lock duration threshold), the control unit 11 acquires a second set time (for example, 10 seconds) from the storage unit 9. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and light for the second set time. In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the second set time. Further, the backlight drive controller 5 turns on the backlight 4 for the second set time in response to an instruction from the controller 11 (step S15 → step S17).

  As a result of the collation in step S14, when (lock duration) ≧ (lock duration threshold), the control unit 11 acquires a first set time (for example, 30 seconds) from the storage unit 9. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and light for the first set time. In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the first set time. Further, the backlight drive control unit 5 turns on the backlight 4 for the first set time in response to an instruction from the control unit 11 (step S16 → step S17).

  As described above, in the present embodiment, when the lock is released, the display time of the liquid crystal display unit 1 after the release and the backlight 4 using the time (the lock duration) that the lock state before the release is continued as a parameter. The lighting time is controlled. Therefore, if the lock duration threshold value is set in consideration of the time reference interval of the user, the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 at the time of unlocking for time reference are set to the first time. The second set time for time reference shorter than the set time can be used. Thereby, the effect that the power consumption of the portable terminal at the time of lock release can be reduced is acquired.

  Next, a second embodiment of the present invention will be described.

  The configuration of the present embodiment is the same as the configuration of the first embodiment shown in FIG. 1, but it is assumed that the user registers the operation detection time threshold value in the storage unit 9 in advance. The operation detection time threshold is determined by the control unit 11 to be the operation of the mobile terminal when the operation on the touch panel operation unit 3 is performed within that time after unlocking, or the time reference when the operation is not performed within that time. For example, 5 seconds.

  Next, the operation of the present embodiment will be described with reference to FIG. 1 and FIG. FIG. 4 is a flowchart showing the operation of the second exemplary embodiment of the present invention.

  Referring to FIG. 4, when the user wants to lock the mobile terminal, the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the lock side. The control unit 11 detects a lock operation by the touch panel lock operation unit 6 and puts the touch panel operation unit 3 into a locked state (step S20). Next, when the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the unlock side, the control unit 11 detects the unlock operation by the touch panel lock operation unit 6 (step S21).

  The control unit 11 that has detected the unlocking operation instructs the counter 8 to start counting, and the counter 8 starts counting (step S22). Further, the control unit 11 that has detected the unlocking operation acquires a second set time (for example, 10 seconds) from the storage unit 9, and sends the second set time to the liquid crystal drive control unit 2 and the backlight drive control unit 5. Instruct driving. In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 starts display on the liquid crystal display unit 1. Further, the backlight drive control unit 5 starts to turn on the backlight 4 in response to an instruction from the control unit 11 (step S23 → step S28).

  When the user touches the touch panel operation unit 3 and performs an operation such as key input after the unlocking operation, the control unit 11 detects the operation (step S24), instructs the counter 8 to end counting, and the counter 8 The count is finished (step S25). Then, the control unit 11 acquires the time counted by the counter 8 (time from lock release to key operation detection) and collates it with an operation detection time threshold value (for example, 5 seconds) registered in advance in the storage unit 9 (Step 5). S26).

  As a result of the collation in step S26, when (time from lock release to key operation detection) <(operation detection time threshold), the control unit 11 stores the first set time (for example, 30 seconds) from the storage unit 9. To get. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and light for the first set time. In step S23, the liquid crystal drive control unit 2 and the backlight drive control unit 5 that have been driven for the second set time change the display time and the lighting time to the first set time, thereby changing the liquid crystal display unit 1 and the backlight 4 to each other. Is driven (step S27 → step S28). If the result of the collation in step S26 is (time from unlocking to key operation detection) ≧ (operation detection time threshold value), the control unit 11 ends the operation.

As described above, in the present embodiment,
-Control is performed so that the liquid crystal display unit 1 is displayed and the backlight 4 is turned on for the second set time (10 seconds) for time reference when unlocking,
After that, if a key operation is performed before the operation detection time threshold (5 seconds) elapses from unlocking, the liquid crystal display unit 1 is displayed and the backlight 4 is turned on for the first set time (30 seconds). I am trying to change the setting time.
By doing this,
If no key operation is performed before the operation detection time threshold elapses from unlocking, it is determined that the lock is released for time reference, and the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 are Keep the second set time (10 seconds) instructed in step S23,
If the key operation is performed before the operation detection time threshold elapses from unlocking, it is determined that the mobile terminal is unlocked, and the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 are determined. Change from the second set time (10 seconds) to the first set time (30 seconds)
-As a result, the effect that the power consumption at the time of lock release for time reference can be reduced is acquired.

  Next, a third embodiment of the present invention will be described.

  This embodiment is a combination of the first embodiment and the second embodiment described above. The configuration of the present embodiment is the same as the configuration of the first embodiment shown in FIG. 1, but it is assumed that the user registers the operation detection time threshold value in the storage unit 9 in advance.

  Next, the operation of the present embodiment will be described with reference to FIGS. FIG. 5 is a flowchart showing the operation of the third exemplary embodiment of the present invention.

  Referring to FIG. 5, when the user wants to lock the mobile terminal, the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the lock side. The control unit 11 detects a lock operation by the touch panel lock operation unit 6 and puts the touch panel operation unit 3 into a locked state (step S30). Then, the control unit 11 instructs the counter 8 to start counting, and the counter 8 starts counting (step S31).

  Next, when the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the unlock side, the control unit 11 detects the unlock operation by the touch panel lock operation unit 6. The control unit 11 that has detected the unlocking operation instructs the counter 8 to end counting, and the counter 8 ends the counting (steps S32 and S33). And the control part 11 acquires the time (lock continuation time) which the counter 8 counted, and collates with the lock continuation time threshold value (for example, 60 minutes) previously registered in the memory | storage part 9 (step S34).

  As a result of the collation in step S34, when (lock duration) <(lock duration threshold), the control unit 11 acquires a second set time (for example, 10 seconds) from the storage unit 9. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and light up for the second set time (step S35). In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the second set time. Further, the backlight drive control unit 5 turns on the backlight 4 for a second set time in response to an instruction from the control unit 11 (step S37).

  As a result of the collation in step S34, when (lock duration) ≧ (lock duration threshold), the control unit 11 acquires a first set time (for example, 30 seconds) from the storage unit 9. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and turn on for the first set time (step S36). In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the first set time. Further, the backlight drive control unit 5 turns on the backlight 4 for the first set time in response to an instruction from the control unit 11 (step S37).

  Following step S35, the control unit 11 instructs the counter 8 to start counting, and the counter 8 starts counting after resetting the count value in step S33. When the user touches the touch panel operation unit 3 and performs an operation such as key input after the unlocking operation, the control unit 11 detects the operation, instructs the counter 8 to end the count, and the counter 8 ends the count. . Then, the control unit 11 acquires the time counted by the counter 8 (time from lock release to key operation detection) and collates it with an operation detection time threshold value (for example, 5 seconds) registered in advance in the storage unit 9 (Step 5). S38).

  As a result of the collation in step S38, when (time from lock release to key operation detection) <(operation detection time threshold), the control unit 11 stores the first set time (for example, 30 seconds) from the storage unit 9. To get. Then, the control unit 11 instructs the liquid crystal drive control unit 2 and the backlight drive control unit 5 to display and light for the first set time. The liquid crystal drive control unit 2 and the backlight drive control unit 5 that have been driven at the second set time in step S35 to step S37 change the display and lighting time from the second set time to the first set time. The liquid crystal display unit 1 and the backlight 4 are each driven (step S39). Note that if the result of the collation in step S38 is (time from lock release to key operation detection) ≧ (operation detection time threshold), the control unit 11 ends the operation.

  As described above, in the present embodiment, at the time of unlocking, the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 are determined by the combination of the lock duration time and the time until key operation. . Specifically, even when the lock duration time is less than the lock duration time threshold, if a key operation is performed within a predetermined time, the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 are determined from the second set time. The change is made to the first set time. When the lock duration time is less than the lock duration time threshold and no key operation is performed within a predetermined time, the display time of the liquid crystal display unit 1 and the lighting time of the backlight 4 remain at the second set time. . The above features have the effect of reducing the power consumption when unlocking for time reference, and shortening the display and lighting time when the key operation is within the specified time even if the lock duration is short It also has the effect of not.

  Next, a fourth embodiment will be described.

  The configuration of the present embodiment is the same as that of the first embodiment shown in FIG.

  Next, the operation of the present embodiment will be described with reference to FIG. 1 and FIG. FIG. 6 is a flowchart showing the operation of the fourth exemplary embodiment of the present invention.

  Referring to FIG. 6, when the user wants to lock the mobile terminal, the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the lock side. The control unit 11 detects a lock operation by the touch panel lock operation unit 6 and puts the touch panel operation unit 3 into a locked state (step S40). Next, when the user slides the touch panel lock slide key of the touch panel lock operation unit 6 to the unlock side, the control unit 11 detects the unlock operation by the touch panel lock operation unit 6. The control unit 11 that has detected the unlocking operation determines whether or not the application is operating. The application means, for example, a music playback application that is executed even when the touch panel lock function is valid (step S41 → step S42). When the application is not operating when the lock state is released, the control unit 11 acquires the second set time from the storage unit 9 and outputs the second set time to the liquid crystal drive control unit 2 and the backlight drive control unit 5. Instructed to display and light up only for the set time. In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the second set time. Further, the backlight drive control unit 5 turns on the backlight 4 for the second set time in response to an instruction from the control unit 11 (step S43 → step S45). When the application is operating when the locked state is released, the control unit 11 obtains the first set time from the storage unit 9, and the first setting is performed on the liquid crystal drive control unit 2 and the backlight drive control unit 5. Instructed to display and light up only for the set time. In response to an instruction from the control unit 11, the liquid crystal drive control unit 2 displays the liquid crystal display unit 1 for the first set time. Further, the backlight drive control unit 5 turns on the backlight 4 for the first set time in response to an instruction from the control unit 11 (step S44 → step S45).

  As described above, in the present embodiment, the liquid crystal display unit 1 is displayed at the first set time when the application is operating at the time of unlocking the touch panel, and at the second set time when the application is not operating. The display and lighting time of the backlight 4 are changed. In addition, since the time reference by the user can be considered as a motivation for releasing the locked state when the application is not operating, as a result, it is possible to reduce the power consumption when unlocking for time reference.

  Next, application examples and modification examples of the present invention will be described.

  In the first to fourth embodiments described above, the touch panel type mobile terminal is described as an example of the mobile terminal. However, the present invention is not limited to the touch panel type mobile terminal, and is applicable to all mobile terminals having a lock function. Clearly it is possible.

  -In any form of the first to fourth embodiments described above, the user may set in the mobile terminal whether or not power reduction at the time of unlocking should be performed. In this case, the control unit 11 of the mobile terminal performs control according to the set form information.

  In the above-described fourth embodiment, a music playback application that is executed even when the touch panel lock function is valid is described as an example, but an application in another form may be used. For example, when the lock state is set, the control unit 11 interrupts the application and stores the application execution state information in the storage unit 9. When the lock is released, the control unit 11 refers to the storage unit 9 to check whether the application execution state information exists. May be.

It is a figure which shows the structure of the portable terminal of the 1st Embodiment of this invention. It is a figure which shows an example of the external appearance of a touchscreen type portable terminal. It is a flowchart which shows the operation | movement of the 1st Embodiment of this invention. It is a flowchart which shows the operation | movement of the 2nd Embodiment of this invention. It is a flowchart which shows the operation | movement of the 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement of the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal display part 2 Liquid crystal drive control part 3 Touch panel operation part 4 Backlight 5 Backlight drive control part 6 Touch panel lock operation part 7 Clock 8 Counter 9 Memory | storage part 10 Power supply part 11 Control part

Claims (16)

Means for counting the lock duration from when the lock is set to when the lock is released; means for comparing the lock duration with a preset lock duration threshold; and the display time of the display unit and the backlight And a means for controlling the lighting time at the first set time when the lock duration is equal to or greater than the lock duration threshold, and at the second set time when the lock duration is less than the lock duration threshold, respectively. Mobile device. Means for detecting presence / absence of key operation when unlocked, and means for determining display time and backlight lighting time at unlocking according to presence / absence of key operation within a predetermined time from unlocking A mobile terminal characterized by. The display time and backlight lighting time when unlocking is displayed as a second set time, lighting means, means for detecting presence / absence of key operation when unlocking, time from unlocking to key operation When the key operation is performed within a predetermined time after unlocking, the display time of the display unit and the lighting time of the backlight are changed from the second set time to the first set time. Means for displaying and lighting, and means for displaying and lighting with the display time of the display unit and the lighting time of the backlight remaining as the second set time when the key operation is not performed within a predetermined time from unlocking And a portable terminal. Means for counting lock duration from lock setting to unlock, means for detecting presence / absence of key operation at unlock, means for counting time from unlock to key operation, lock duration and lock A portable terminal comprising: means for determining a display time of a display unit and a lighting time of a backlight at the time of unlocking according to a combination with the presence / absence of key operation within a predetermined time from the release. Means for counting the lock duration from when the lock is set to when the lock is released; means for comparing the lock duration with a preset lock duration threshold; and means for detecting the presence or absence of key operation when unlocking; Means to count the time from unlocking to key operation, and display time and backlight lighting time at unlocking when the lock duration is greater than or equal to the lock duration threshold, or less than the lock duration threshold When the key operation is performed within a predetermined time, the first control time is set, and when the key operation is not performed within the predetermined time less than the lock duration threshold, the second control time is controlled. And a portable terminal. It has means for detecting the presence / absence of an application that is operating or interrupted at the time of unlocking, and means for determining the display time of the display unit and the lighting time of the backlight at the time of unlocking according to the presence / absence of the application Mobile terminal. The mobile terminal according to claim 1, 3 or 5, wherein the second set time is shorter than the first set time. The portable terminal according to claim 1, wherein the portable terminal is a touch panel portable terminal, and the lock is a lock of a touch panel operation unit. A step of starting counting of the lock duration time at the time of lock setting, a step of ending the count at the time of unlocking, a step of acquiring the lock duration time from the time of lock setting to the time of unlocking, and the lock duration time are preset. The step of collating the lock duration threshold value, the display time of the display unit at the time of unlocking and the backlight lighting time are set to the first set time when the lock duration time is equal to or greater than the lock duration threshold value, and the lock duration time is set. A power reduction method at the time of unlocking the mobile terminal, comprising: a step of controlling at a second set time when the value is less than the threshold value. The display time of the display unit and the lighting time of the backlight at the time of unlocking are displayed as the second set time, the step of starting lighting, the step of detecting presence / absence of key operation at the time of unlocking, and the time from unlocking to key operation And when the key operation is performed within a predetermined time from unlocking, the display time of the display unit and the lighting time of the backlight are changed from the second set time to the first set time. A step of displaying and lighting, and a step of displaying and lighting the display time of the display unit and the lighting time of the backlight as the second set time when the key operation is not performed within a predetermined time from the unlocking. A method for reducing power consumption when unlocking a portable terminal. A step of starting counting of the lock duration time at the time of lock setting, a step of ending the count at the time of unlocking, a step of acquiring the lock duration time from the time of lock setting to the time of unlocking, and the lock duration time are preset. A step of checking a lock duration threshold value, a step of detecting presence / absence of a key operation at the time of unlocking, a step of counting a time from the unlocking to the key operation, a display time and a backlight of the display unit at the time of unlocking When the lock duration time is equal to or greater than the lock duration threshold value, or when the key operation is performed within a predetermined time less than the lock duration threshold value, the lighting time of is less than the lock duration threshold value at the first set time. If no key operation is performed within a predetermined time, a control step is performed at a second set time. Power reduction at a mobile terminal unlocking, characterized by. Detecting the presence / absence of an application that is operating or interrupted at the time of unlocking, and determining the display time of the display unit and the lighting time of the backlight at the time of unlocking according to the presence / absence of the application A method for reducing power consumption when the mobile terminal is unlocked. A function that counts the lock duration from when the lock is set to when the lock is released, a function that collates the lock duration with a preset lock duration threshold, the display time when the lock is released, and the backlight lighting time , When the lock duration time is equal to or greater than the lock duration threshold value, and the second set time when the lock duration time is less than the lock duration threshold value. Displays the display time and backlight lighting time as the second set time when unlocked, starts lighting, functions that detect the presence or absence of key operation when unlocked, and counts the time from unlock to key operation When the key is operated within a predetermined time after unlocking, the display time of the display unit and the lighting time of the backlight are changed from the second set time to the first set time for display and lighting A function for displaying and lighting on the computer with the display time of the display unit and the lighting time of the backlight remaining as the second set time when a key operation is not performed within a predetermined time after unlocking. A program to make it happen. A function that counts the lock duration from when the lock is set to when the lock is released, a function that compares the lock duration with a preset lock duration threshold, a function that detects the presence or absence of key operation when unlocking, and from unlocking A function that counts the time until key operation, the display time of the display at the time of unlocking, and the lighting time of the backlight, when the lock duration is equal to or greater than the lock duration threshold, or less than the lock duration threshold within a predetermined time When the key operation is performed on the computer, the first control time is controlled at the first set time, and when the key operation is not performed within the predetermined time that is less than the lock duration threshold, the control function is performed at the second control time. A program to make it happen. To allow a computer to realize the function of detecting the presence or absence of an application that is operating or interrupted when unlocking, and the function of determining the display time and backlight lighting time when unlocking depending on the presence or absence of an application Program.

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