JP2007128266A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment for suppressing power consumption according to the movement of electronic equipment to suppress the consumption of a battery. <P>SOLUTION: An acceleration sensor 11 is configured as an acceleration sensor for detecting the acceleration of a compact portable terminal 1, and inputs the detection signal of the detected acceleration to a detection decision part 13. An acceleration setting value storage part 12 stores the characteristics of the change of acceleration as an acceleration set value. A detection decision part 13 decides whether or not the characteristics of the change of acceleration shown by a detection signal input from the acceleration sensor 11 fit to the characteristics of the acceleration setting value stored in the acceleration setting value storage part 12. When receiving a decision result showing that the characteristics of the change of acceleration fit to the characteristics of the first acceleration setting value from the detection decision part 13, a control part 14 applies a supply stop instruction to instruct the stop of the supply of a power to a power source control object 15 to the power source control object 15. The power to be supplied from a battery 18 to the power source control object 15 is stopped according to a supply stop instruction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device that can control power consumption and suppress battery consumption.

  Portable electronic devices such as mobile phones, PDAs (Personal Digital Assistance), and handy terminals are supplied with power by a built-in power source, for example, a battery. In order not to impair portability, there is a limit to the size of the battery built in the portable electronic device, and the battery capacity is also limited. In portable electronic devices, for example, when the user is not using the electronic device, the backlight of the display screen is turned off or the power is turned off in order to reduce battery consumption and extend the usable period of the battery. By cutting, unnecessary power consumption is reduced.

  As a first conventional technique for suppressing battery consumption, there is a portable information terminal that turns off the power when no key operation is performed for a certain period of time. When no key operation is performed for a certain period of time, the user is determined not to use the portable information terminal, and the power is turned off to suppress battery consumption.

  As a second conventional technique, there is a power supply control device that performs control for reducing power consumption in accordance with the use state of an electronic device. This power supply control device detects whether the electronic device is in use by detecting the tilt of the electronic device using an acceleration sensor and detecting the direction of the user's line of sight using a CCD camera. Is turned on and off. The light-off condition is, for example, a case where the user is not facing the direction of the electronic device and the electronic device is tilted by a predetermined angle or more for a predetermined time or longer. In addition to turning on and off the backlight, power control can also be performed (see, for example, Patent Document 1).

  As a third conventional technique, there is an information processing apparatus that controls power consumption by detecting a user's situation or a situation around the user as a physical quantity. This information processing apparatus detects physical quantities such as video, sound, vibration, temperature, position, and distance to an obstacle using sensor means attached to the user or sensor means arranged around the user. It recognizes the situation of the user or the situation around the user. For example, using a motion sensor such as an acceleration sensor worn by the user, the user's motion status is detected as acceleration, and it is determined from the detected acceleration frequency pattern whether or not the user's spontaneous motion. During the user's voluntary exercise, the degree of concentration of the user with respect to the information processing apparatus is reduced, so that the power consumption is reduced by increasing the period of updating the screen. Alternatively, by stopping or reducing the power supply to functions that are considered unnecessary, such as stopping display on the screen, the power-down mode is entered to reduce power consumption (see, for example, Patent Document 2). ).

  As a fourth conventional technique, there is a mobile phone that shifts from the power saving mode to the normal mode when the vibration detected by the vibration sensor has a predetermined characteristic. This mobile phone is provided with a vibration sensor that detects vibration, and when the vibration detected by the vibration sensor is equal to a predetermined cycle, or an acceleration sensor is used instead of the vibration sensor, the acceleration detected by the acceleration sensor is increased. When the acceleration is equal to a predetermined acceleration, the power saving mode is canceled and the normal mode is entered. The user can return to the normal mode by shaking the mobile phone at a constant rhythm (see, for example, Patent Document 3).

JP-A-9-120323 JP 2001-100870 A JP 2003-244066 A

  However, when the portable information terminal using the first conventional technology is stored in a pocket or the like, if the key of the portable information terminal comes into contact with another object, it is determined that the key operation has been performed and is disconnected. The power may be turned on. In this case, there is a problem that power is wasted without using the portable information terminal stored in the pocket. If the time for detecting that no key operation has been performed is set short, the user may have been browsing the data for a long time and the power may be turned off against the user's will. is there.

  The second conventional power supply control device detects the tilt of the electronic device by an acceleration sensor, but the electronic device may be tilted even during use, so that it is not in use by detecting the line of sight. There is a problem in that it is impossible to detect that it is not in use unless the line-of-sight direction is detected using a CCD camera or the like.

  The information processing apparatus according to the third prior art controls power consumption by detecting a user's situation or a situation around the user as a physical quantity, and does not detect movement of an electronic device. Absent. Therefore. There is a problem that the user cannot give an instruction to the electronic device by moving the electronic device.

  The mobile phone according to the fourth prior art is configured to cancel the power saving mode and shift to the normal mode when the vibration detected by the vibration sensor is equal to a predetermined period. That is, there is a problem that the user can return to the normal mode by shaking the mobile phone at a constant rhythm and cannot be switched to the power saving mode.

  An object of the present invention is to provide an electronic device that can control power consumption according to movement of the electronic device and suppress battery consumption.

The present invention is an electronic device driven by being supplied with power by a built-in power source,
Detection means for detecting movement of the electronic device;
Storage means for storing a pattern indicating characteristics of movement of the electronic device;
Determination means for determining whether or not the movement detected by the detection means conforms to a pattern stored in the storage means;
An electronic apparatus comprising: a power source control unit that stops power supply from the power source when it is determined by the determination unit that the power supply is suitable.

  According to the present invention, the detection means detects the movement of the electronic device driven by power supplied from the built-in power supply, the storage means stores a pattern indicating the characteristics of the movement of the electronic device, and the determination means When it is determined whether or not the motion detected by the detection means is compatible with the pattern stored in the storage means, and the power control means determines that the movement is compatible with the determination means, the power supply The power supply from is stopped.

  In this way, the movement of the electronic device is detected, and when the detected movement matches the pattern indicating the characteristic of the movement of the electronic device, the power supply is stopped, that is, the power is turned off. By setting a pattern indicating the characteristics of the electronic device, the power can be turned off according to the movement of the electronic device.

  Further, according to the present invention, the pattern indicating the characteristics stored in advance in the storage means is that the electronic device is stopped within a predetermined time after an acceleration greater than a predetermined acceleration or after an impact greater than a predetermined impact. It is the pattern which shows that.

  According to the present invention, the pattern indicating the characteristics of the movement of the electronic device indicates that the electronic device is stationary within a predetermined time after an acceleration greater than a predetermined acceleration or after an impact greater than a predetermined impact. Since the pattern is shown, it can be detected that the electronic device has stopped after suddenly operating.

The present invention also provides an extracting means for extracting the feature of the motion detected by the detecting means,
It further includes setting means for storing the feature extracted by the extracting means as a pattern in the storage means.

  According to the present invention, it is possible to set the feature of movement when housing the electronic device as a pattern, so that the pattern can be set for each user.

  In the invention, it is preferable that the detection means is an acceleration sensor or an impact sensor.

  According to the present invention, since the movement of the electronic device is detected using an acceleration sensor or an impact sensor, the movement of the electronic device can be detected as a change in acceleration.

  According to the present invention, the acceleration sensor or the impact sensor uses a piezoelectric element.

  According to the present invention, since the acceleration is detected by the acceleration sensor or the impact sensor using the piezoelectric element, it is not necessary to supply power to the acceleration sensor or the impact sensor in order to detect the acceleration.

  According to the present invention, by setting a pattern indicating the characteristics of the movement of the electronic device, the power can be turned off according to the movement of the electronic device. Therefore, the power consumption is controlled by the movement of the electronic device. Battery consumption can be suppressed.

  In addition, according to the present invention, it is possible to detect that the electronic device has come to a standstill after sudden movement, so that the power supply can be cut off by storing the electronic device in a pocket or the like.

  Further, according to the present invention, since a pattern indicating the characteristics of the movement of the electronic device can be set for each user, the power can be turned off by a user-specific operation, the operability is improved, and the power Cutting accuracy can be improved.

  According to the present invention, since the movement of the electronic device is detected as a change in acceleration, it is possible to set a power-off condition using the characteristics of the change in acceleration.

  Further, according to the present invention, it is not necessary to supply power to the acceleration sensor or the impact sensor in order to detect the acceleration, so that the electronic device can be reduced in size.

FIG. 1 is a diagram showing a schematic configuration of a small portable terminal 1 according to an embodiment of the present invention. Electronic devices (hereinafter also referred to as devices) are, for example, mobile phones, PDAs (Personal Digital
Assistance) or a small portable terminal 1 such as a handy terminal. The small portable terminal 1 includes an acceleration sensor 11, an acceleration set value storage unit 12, a detection determination unit 13, a control unit 14, a power control target 15, a switch 16, a display unit 17, and a battery 18.

  The acceleration sensor 11 is a sensor for detecting the acceleration or inclination of the small mobile terminal 1, for example, an acceleration sensor or an impact sensor. Hereinafter, although the case where an acceleration sensor is used as the acceleration sensor 11 will be described, an impact sensor may be used instead of the acceleration sensor. The acceleration sensor 11 inputs the detected acceleration detection signal to the detection determination unit 13.

  The acceleration set value storage unit 12 is a storage device for storing an acceleration set value indicating a feature of movement of the small mobile terminal 1, for example, a feature of change in acceleration, and is configured by a nonvolatile semiconductor memory such as a flash memory, for example. Is done. The acceleration set value starts the power saving mode, that is, the first acceleration setting value for stopping the supply of power to the power control target 15, and ends the power saving mode, that is, starts the supply of power to the power control target 15. Including a second acceleration setting value.

  The detection determination unit 13 determines whether or not the feature of the acceleration change indicated by the detection signal input from the acceleration sensor 11 matches the feature of the acceleration setting value stored in the acceleration setting value storage unit 12. The result is input to the control unit 14.

  When the control unit 14 receives from the detection determination unit 13 the determination result that the feature of the movement of the small mobile terminal 1, that is, the feature of the acceleration change matches the feature of the first acceleration set value, A supply stop instruction for instructing to stop the supply of power is given to the power control target 15. The power control target 15 includes a power control target A15a to a power control target N15n, and each power control target is, for example, a backlight of a liquid crystal display and a USB connection unit. The supply of power from the battery 18 to the power control target 15 is stopped by the supply stop instruction. When the control unit 14 receives a determination result from the detection determination unit 13 that the feature of the change in acceleration matches the feature of the second acceleration setting value, the control unit 14 instructs the start of power supply to the power control target 15. A start instruction is given to the power control target 15. In response to the supply start instruction, power is supplied from the battery 18 to the power control target 15.

  The switch 16 is a switch for instructing power on or off. When the switch 16 is operated with the power on, the controller 14 is instructed to turn off the power. When the control unit 14 receives a power-off instruction from the switch 16, the control unit 14 performs a termination process such as saving information in the nonvolatile memory, and then turns off the power of the entire small portable terminal 1. When the switch 16 is operated in a state where the power is turned off, the power to the entire small portable terminal 1 is turned on without going through the control unit 14.

  The display unit 17 is a display device having a display screen such as a liquid crystal display for displaying information. When the information needs to be input, the display unit 17 outputs information from the control unit 14 and displays the information as in a touch panel. An input / output device that can also input is used. The input information is transferred to the control unit 14. The battery 18 is a power source such as a lithium battery, for example.

  In the above-described embodiment, when the control unit 14 receives a determination result from the detection determination unit 13 that the characteristic of the change in acceleration of the small mobile terminal 1 matches the characteristic of the first acceleration setting value, the control unit 14 Although only the power supply to 15 is stopped, the power supply of the entire small portable terminal 1 may be cut off. In this case, the power is turned on by the switch 16.

  Furthermore, in the above-described embodiment, the detection determination unit 13 and the control unit 14 are configured separately, but the detection determination unit 13 may be included in the control unit 14. Furthermore, the acceleration setting value stored in the acceleration setting value storage unit 12 may be stored in a semiconductor memory such as a flash memory included in the control unit 14, and the acceleration setting value storage unit 12 may be omitted. The flash memory included in the control unit 14 stores information such as registry information that is setting information such as an OS (Operating System) and application programs. In this registry information, for example, coordinate data of a touch panel which is the display unit 17 is also stored, and an acceleration setting value is also stored in this registry information.

  The detection means is, for example, an acceleration sensor 11, the storage means is, for example, an acceleration set value storage section 12, the determination means is, for example, a detection determination section 13, and the power supply control means is, for example, a control section 14, which is built in. The power source to be used is, for example, a battery 18.

  FIG. 2 is a diagram illustrating an example of the acceleration sensor 11 illustrated in FIG. 1. FIG. 2A is a diagram showing a schematic configuration of the acceleration sensor 11 using a piezoelectric element. The acceleration sensor 11, which is an acceleration sensor or an impact sensor, is fixed to the housing of the small portable terminal 1 by the surface of the base 24 of the case 23. One end of the piezoelectric element 21 is fixed to the opposite surface of the base 24, and the weight 22 is fixed to the other end of the piezoelectric element 21. The piezoelectric element 21 and the weight 22 are housed in a case 23, and a set of signal lines for outputting a detection signal detected by the piezoelectric element 21 extends outside the case 23.

  When a movement occurs in the small portable terminal 1, an inertial force acts on the weight 22, and the pressing force applied to the piezoelectric element 21 by the weight 22 changes. The acceleration sensor 11 outputs a change in voltage generated in the piezoelectric element 21 due to a change in pressing force as a detection signal. The detection signal output from the acceleration sensor 11 may be an analog signal or a digital signal. In the case of an analog signal, the analog signal is converted into a digital signal by the detection determination unit 13.

  Thus, since the movement of the small portable terminal 1 which is an electronic device is detected using an acceleration sensor or an impact sensor, the movement of the small portable terminal 1 can be detected as a change in acceleration. Since the movement of the small portable terminal 1 is detected as a change in acceleration, it is possible to set conditions for starting or stopping the power saving mode or turning off the power using the characteristics of the change in acceleration.

  Further, since the acceleration is detected by an acceleration sensor or an impact sensor using a piezoelectric element, it is not necessary to supply power to the acceleration sensor or the impact sensor in order to detect the acceleration, and the electronic device that is the small portable terminal 1 is made compact. And impact resistance can be improved.

  FIG. 2B is a diagram illustrating an example of a change in acceleration detected by the acceleration sensor 11. The vertical axis indicates the voltage generated by the acceleration in the direction of gravity, and the horizontal axis indicates time.

  The first acceleration setting value stored in the acceleration setting value storage unit 12 is a pattern indicating characteristics of changes in acceleration when the small portable terminal 1 is stored in a holder attached to a pocket or waist, for example. The acceleration set value is a pattern indicating a characteristic of a change in acceleration when the small portable terminal 1 is taken out from a holder attached to a pocket or waist, for example. The acceleration setting value, that is, the pattern indicating the characteristics of the acceleration change is a pattern specified by, for example, the acceleration value and the time when the acceleration changes.

  The change in acceleration shown in FIG. 2B is an example having characteristics that match the first acceleration setting value for starting the power saving mode, that is, for stopping the supply of power to the power control target 15. When the small mobile terminal 1 is stored in a storage unit such as a pocket or a holder attached to the waist, the small mobile terminal 1 is stored from above. Therefore, the user stores the small portable terminal 1 in the storage unit so as to drop. At this time, the acceleration that occurs in the small portable terminal 1 may be 0 or slightly bounce when the small portable terminal 1 reaches the bottom surface of the storage unit after a relatively large acceleration in the direction of gravity occurs. Causes acceleration in the opposite direction to gravity. Therefore, the condition for stopping the supply of power to the power control target 15 of the small portable terminal 1 is that a relatively large acceleration is generated in the downward direction, that is, in the direction of gravity, and then an acceleration indicating a sudden stop is generated. is there. The acceleration indicating the static state is that the acceleration becomes zero, or an acceleration in the upward direction, that is, the direction opposite to the gravity occurs.

  For example, the first acceleration set value is an acceleration that is equal to or higher than a predetermined acceleration, and is a pattern indicating a characteristic of acceleration change that the time from the maximum acceleration to the acceleration indicating stillness is within a predetermined time. is there. Specifically, in this example, since a change in acceleration is detected as a change in voltage, there is a pattern in which there is an acceleration indicating rest at a time equal to or less than a predetermined time Tr after a voltage equal to or higher than a predetermined voltage Vr. . The change in acceleration shown in FIG. 2B shows a voltage Vmin indicating that there was an acceleration in the direction opposite to the direction of gravity at time tm after the maximum voltage Vmax at time tp. When the voltage Vmax is equal to or higher than the predetermined voltage Vr and the time Tpm is equal to or shorter than the predetermined time Tr, the change in acceleration shown in FIG. 2 (b) matches the first acceleration set value. Has characteristics.

  In the example shown in FIG. 2B, the characteristics of the movement of the small portable terminal 1 are specified by the threshold value of the detection signal and the change time, but the waveform of the detection signal itself, the signal width of the detection signal, and the integration of the detection signal You may specify using a value etc.

  As described above, the pattern indicating the characteristics of the movement of the electronic device, that is, the acceleration setting value, is obtained by the small portable terminal 1 within a predetermined time after an acceleration greater than a predetermined acceleration or after an impact greater than a predetermined impact. Since the pattern indicates that an electronic device is stationary, it can be detected that the electronic device has been stationary after suddenly operating. Therefore, by storing the electronic device in a pocket or the like, the supply of power to the power control target 15 can be stopped or the power of the electronic device can be turned off.

  FIG. 3 is a flowchart showing an example of a processing procedure of power control performed by the small portable terminal 1 shown in FIG. This flowchart controls the stop or start of the supply of power to the power control target 15 according to the change in acceleration detected by the acceleration sensor 11, that is, the movement of the small portable terminal 1. When the power is turned on by the switch 16 and the user can use the small portable terminal 1, the process proceeds to step S1.

  In step S <b> 1, the acceleration sensor 11 inputs a detected acceleration detection signal to the detection determination unit 13. In step S <b> 2, the detection determination unit 13 determines whether the device is in use, that is, whether power is being supplied to the power control target 15. To determine whether power is being supplied to the power control target 15, the control unit 14 that controls the start or stop of the supply of power to the power control target 15 is inquired. When power is being supplied to the power control target 15, the process proceeds to step S3. When power is not being supplied to the power control target 15, the process proceeds to step S6.

  In step S <b> 3, the detection determination unit 13 determines whether the feature of the change in acceleration indicated by the detection signal input from the acceleration sensor 11 matches the feature of the first acceleration setting value stored in the acceleration setting value storage unit 12. It is determined whether or not the power-off condition is satisfied. The power-off condition is a condition for stopping the power supply to the power control target 15. When the power-off condition is satisfied, the process proceeds to step S4. When the power-off condition is not satisfied, the process returns to step S1.

  In step S <b> 4, the control unit 14 sends a supply stop instruction for instructing the supply of power from the battery 18 to the power control target 15 to the power control target 15. In step S5, the power supply to the power control target 15 is stopped, and the device shifts to the power saving mode and ends.

  In step S <b> 6, the detection determination unit 13 matches the characteristics of the change in acceleration indicated by the detection signal input from the acceleration sensor 11 with the characteristics of the second acceleration setting value stored in the acceleration setting value storage unit 12. It is determined whether there is a power-on condition. The power-on condition is a condition for starting the supply of power to the power control target 15. When the power-on condition is satisfied, the process proceeds to step S7. When the power-on condition is not satisfied, the process returns to step S1.

  In step S <b> 7, the control unit 14 sends a supply start instruction for instructing start of power supply from the battery 18 to the power control target 15 to the power control target 15. In step S8, the power saving mode ends, that is, the power supply to the power control target 15 is started, and the device is started and ended.

  In the embodiment shown in FIG. 3, the supply of power to the power control target 15 is stopped when the power-off condition is satisfied, but the entire power supply of the small portable terminal 1 may be cut off. In this case, the power is turned on by operating the switch 16. This is characterized in that when the power is turned off, power is not supplied to the acceleration sensor 11, the acceleration setting value storage unit 12, the detection determination unit 13, and the control unit 14, and the second acceleration setting value is met. This is because it cannot be detected whether or not there is a change in acceleration.

  As described above, when the movement of the electronic device that is the small portable terminal 1 is detected, and the detected feature of the motion matches the feature of the acceleration setting value that is a pattern indicating the feature of the movement of the electronic device, Since the power mode is started or stopped, or the power is turned off, the power saving mode is started or stopped, or the power is turned off according to the movement of the electronic device by setting a pattern that indicates the characteristics of the movement of the electronic device. can do. Therefore, power consumption can be controlled by movement of the electronic device, and battery consumption can be suppressed. That is, useless power consumption due to forgetting to turn off the power can be prevented. Furthermore, the electronic device can be activated without pressing a switch.

  FIG. 4 is a diagram showing a schematic configuration of a small portable terminal 1 which is another embodiment of the present invention. In the above-described embodiment, the pattern indicating the standard feature of the change in acceleration is set in the small portable terminal 1 as the acceleration setting value. However, a pattern unique to the user may be set.

  The small portable terminal 1 shown in FIG. 4 has a configuration in which a setting value calculation unit 19 is added to the small portable terminal 1 shown in FIG. 1 so that a user-specific pattern can be set. The set value calculation unit 19 extracts the feature of the acceleration change received from the detection determination unit 13 and stores the extracted feature in the acceleration set value storage unit 12 as a pattern, that is, an acceleration set value. For example, a feature of acceleration change when the user stores the small portable terminal 1 in a pocket or the like is extracted, and the extracted feature is set as an acceleration setting value. The other parts are the same as the corresponding parts of the small portable terminal 1 shown in FIG.

  In the embodiment shown in FIG. 4, the detection determination unit 13, the control unit 14, and the set value calculation unit 19 are configured separately, but the detection determination unit 13 and the set value calculation unit 19 may be included in the control unit 14. Good. Furthermore, the acceleration setting value stored in the acceleration setting value storage unit 12 may be stored in a semiconductor memory such as a flash memory included in the control unit 14, and the acceleration setting value storage unit 12 may be omitted. The extraction unit and the setting unit are, for example, a set value calculation unit 19.

  FIG. 5 is a flowchart illustrating an example of a processing procedure of an acceleration set value setting process performed by the small mobile terminal 1 illustrated in FIG. 4. This is a processing procedure for setting a pattern for turning off the power of the small portable terminal 1, that is, an acceleration set value. For example, when an acceleration set value is requested by the touch panel of the small portable terminal 1, the process proceeds to step T1. .

  In step T <b> 1, the control unit 14 displays a setting initial screen on the display unit 17 for allowing the user to select whether or not to set an acceleration setting value for turning off the power of the small portable terminal 1. On the initial setting screen, a “start” button for instructing start of setting and an “end” button for instructing not to set are displayed. In step T2, the control unit 14 determines whether the “start” button is operated or the “end” button is operated. When the “start” button is operated, the process proceeds to step T3, and when the “end” button is operated, the process ends.

  In step T <b> 3, the control unit 14 displays an operation start screen on the display unit 17 for allowing the user to perform an operation of storing the small portable terminal 1 in, for example, a pocket. In step T4, the control unit 14 causes the acceleration sensor 11 to detect acceleration when the user stores the small portable terminal 1 in a pocket or the like. In Step T5, the detection determination unit 13 determines whether or not the acceleration detected by the acceleration sensor 11 is a downward acceleration, that is, a large acceleration in the direction of gravity. Whether the acceleration is large or not is determined by determining whether the acceleration is equal to or greater than a predetermined acceleration, for example, whether the acceleration is equal to or greater than a minimum value of a sample value collected in advance. When the acceleration is large in the downward direction, the process proceeds to step T6. When the acceleration is not large in the downward direction, the process returns to step T4. In step T <b> 6, the detection determination unit 13 sends acceleration information indicated by the detection signal from the acceleration sensor 11 to the set value calculation unit 19. In step T7, the control unit 14 causes the acceleration sensor 11 to detect the acceleration subsequent to the detected large downward acceleration.

  In step T8, the detection determination unit 13 determines whether the acceleration detected by the acceleration sensor 11 is upward, that is, the direction opposite to gravity, or whether the acceleration is zero. When the acceleration is upward or when the acceleration is 0, that is, when it is determined that the operation of housing the small portable terminal 1 is completed, the process proceeds to Step T9, and when the acceleration is not upward and the acceleration is not 0, Return to T6. In step T <b> 9, the detection determination unit 13 sends the acceleration information indicated by the detection signal from the acceleration sensor 11 to the set value calculation unit 19.

  In step T10, the control unit 14 displays an operation end screen indicating that the detection of acceleration when the small portable terminal 1 is stored is ended. On the operation end screen, whether or not to adopt the measured operation as a set value, that is, the characteristic of the change in acceleration when the user performs an operation of storing the small portable terminal 1 in a pocket or the like is set as the acceleration set value An operation button for causing the user to select whether or not to perform is displayed. The operation buttons include a “Yes” button for instructing setting and a “No” button for instructing not to set. In step T11, the control unit 14 determines whether the “Yes” button is operated or the “No” button is operated. When the “Yes” button is operated, the process proceeds to Step T12, and when the “No” button is operated, the process proceeds to Step T15.

  In step T12, the set value calculation unit 19 calculates an acceleration set value based on the acceleration information sent from the detection determination unit 13, that is, extracts a feature of acceleration change. In step T <b> 13, the set value calculation unit 19 stores the acceleration set value obtained by calculation, that is, the extracted feature in the acceleration set value storage unit 12. In step T14, the control unit 14 displays a setting completion screen indicating that the setting has been completed on the display unit 17 and ends. In step T15, the control unit 14 displays a cancel screen indicating that the setting has been canceled without setting the acceleration set value, and returns to step T1.

  FIG. 6 is a diagram showing the transition of the display screen in the acceleration set value setting process shown in FIG. The setting initial screen 30 is a screen for allowing the user to select whether or not to set an acceleration setting value for turning off the power of the small mobile terminal 1. On the initial setting screen 30, the word “Register power-off operation” indicating that the acceleration setting value for turning off the power of the small mobile terminal 1 is registered, and the small mobile phone for turning off the power to the user. A word that teaches how to start an operation on the terminal 1 “please store the main body after pressing the start button”, a “start” button 30 a that instructs to start setting, and an “end” button 30 b that instructs not to set. Is displayed.

  When the “start” button 30 a is pressed on the setting initial screen 30, an operation start screen 31 indicating that the user is setting an acceleration setting value by detecting acceleration when the small portable terminal 1 is stored in a pocket or the like. Is displayed. On the operation start screen 31, a message “Setting is in progress” indicating that the acceleration set value is being set is displayed.

  When the detection of acceleration when the user stores the small portable terminal 1 in a pocket or the like is finished, an operation end screen 32 indicating that is displayed. On the operation end screen 32, a word “Would you like to set the power to be turned off by this operation?” As well as whether or not to set the feature of the detected acceleration change as the acceleration setting value and the use. An operation button for allowing the user to select whether or not to set the acceleration setting value, that is, a “Yes” button 32 a for instructing setting and a “No” button 32 b for instructing not to set are displayed.

  When the “Yes” button 32a is pressed on the operation end screen 32, the feature of the change in acceleration extracted from the detected acceleration is set as the acceleration setting value, and the setting completion screen 33 indicating that the setting is completed is displayed. The On the setting completion screen 33, a message “setting is completed” indicating that the setting of the acceleration setting value is completed is displayed. When the “No” button 32b is pressed on the operation end screen 32, the acceleration setting value is not set, and a cancel screen 34 indicating that the setting of the acceleration setting value is canceled is displayed. On the cancel screen 34, a message “setting has been cancelled” indicating that the setting of the acceleration setting value has been cancelled is displayed. After the cancel screen 34 is displayed, the screen returns to the initial setting screen 30.

  In the embodiment shown in FIGS. 4 to 6, in order to cut off the power of the small mobile terminal 1, the characteristics of the change in acceleration when the small mobile terminal 1 is stored in a pocket or the like are set as the acceleration measurement values. An acceleration measurement value for starting or ending the power saving mode may be set. That is, in order to start the power saving mode, that is, to stop the supply of power to the power control target 15, the characteristics of the change in acceleration when the small portable terminal 1 is stored are set as the first acceleration setting value, In order to end the power saving mode, that is, to start the supply of power to the power control target 15, the characteristic of the change in acceleration when the small portable terminal 1 is taken out from the pocket or the like is set as the second acceleration setting value. The power saving mode is started or ended using the set first acceleration measurement value and second acceleration setting value.

  As described above, since the feature of movement when the electronic device that is the small portable terminal 1 is stored or taken out, that is, the feature of change in acceleration can be set as the acceleration setting value that is a pattern, the acceleration setting for each user. A value can be set. Therefore, the power can be turned off or the power saving mode can be started or stopped by a user-specific operation, so that the operability is improved, and the accuracy of turning off the power or the power saving mode is started or stopped. Can be improved.

  In each of the above-described embodiments, the small portable terminal 1 such as a mobile phone, a PDA, or a handy terminal has been described as an example of the electronic device. However, the present invention is also suitable for a portable game, a portable personal computer, and the like. It is.

It is a figure which shows the schematic structure of the small portable terminal 1 which is one Embodiment of this invention. It is a figure which shows an example of the acceleration sensor 11 shown in FIG. It is a flowchart which shows an example of the process sequence of the power supply control which the small portable terminal 1 shown in FIG. 1 performs. It is a figure which shows the schematic structure of the small portable terminal 1 which is the other form of implementation of this invention. It is a flowchart which shows an example of the process sequence of the acceleration setting value setting process which the small portable terminal 1 shown in FIG. 4 performs. It is a figure which shows the transition of the display screen in the acceleration setting value setting process shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Small portable terminal 11 Acceleration sensor 12 Acceleration setting value memory | storage part 13 Detection determination part 14 Control part 15 Power supply control object 16 Switch 17 Display part 18 Battery 19 Setting value calculation part 21 Piezoelectric element 22 Weight 23 Case 24 Base 30 Setting initial screen 31 Operation start screen 32 Operation end screen 33 Setting end screen 34 Cancel screen

Claims (5)

An electronic device that is driven by power supplied from a built-in power source,
Detection means for detecting movement of the electronic device;
Storage means for storing a pattern indicating characteristics of movement of the electronic device;
Determination means for determining whether or not the movement detected by the detection means conforms to a pattern stored in the storage means;
An electronic apparatus comprising: a power source control unit that stops power supply from the power source when it is determined by the determination unit to be compatible.   The pattern indicating the characteristics stored in advance in the storage means is a pattern indicating that the electronic device is stationary within a predetermined time after an acceleration greater than a predetermined acceleration or after an impact greater than a predetermined impact. The electronic apparatus according to claim 1, wherein the electronic apparatus is provided. Extraction means for extracting the feature of the motion detected by the detection means;
2. The electronic apparatus according to claim 1, further comprising setting means for storing the feature extracted by the extraction means as a pattern in the storage means.   The electronic device according to claim 1, wherein the detection unit is an acceleration sensor or an impact sensor.   The electronic device according to claim 4, wherein the acceleration sensor or the impact sensor uses a piezoelectric element.

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