JP2007012360A - Electronic device and program thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an electronic device and its program capable of accurately recognizing the remaining battery level.
A sub-microcomputer 11 determines whether or not a battery 14 has been inserted. If the sub-microcomputer 11 determines that the battery 14 has been inserted, the sub-microcomputer 11 turns on the voltage of the CPU 10 and displays information indicating that the battery 14 has been inserted. The CPU 10 is notified. When the power is turned on, the CPU 10 determines whether or not information indicating that the battery 14 has been inserted has been sent, and if it has been sent, displays the battery setting menu. When the user selects the type of battery 14 and operates the set key, the CPU 10 sets the end voltage corresponding to the selected battery type and then notifies the sub-microcomputer 11 of power off. When the sub-microcomputer 11 receives the power-off notification, the sub-microcomputer 11 turns off the power of the CPU 10.
[Selection] Figure 1

Description

  The present invention relates to an electronic device and a program thereof, and more particularly, to an electronic device and a program thereof that can accurately recognize a remaining battery level.

Conventionally, since discharge characteristics differ depending on the type of battery, cameras have appeared that can set the type of battery inserted by the user and display an appropriate remaining battery level in accordance with the set type of battery.
In addition, a digital camera that can automatically determine the type of inserted battery and display an appropriate remaining battery level according to the determined type of battery has also appeared (Patent Document 1).

Japanese Patent Laid-Open No. 2001-218084

However, in a digital camera in which a conventional user sets a battery type and can display an appropriate remaining battery level according to the set battery type, the battery type is set when the user replaces the battery. In the case of forgetting, there is a problem that an appropriate battery remaining amount cannot be identified and an incorrect battery remaining amount display is performed.
Further, as described in Patent Document 1, it is difficult to determine the type of battery in a short time in a digital camera that automatically determines the type of battery and displays an appropriate remaining battery level. Therefore, it may be determined that the battery type is different from the original battery type due to misrecognition. For this reason, there is a problem that an appropriate battery remaining amount cannot be identified and an incorrect battery remaining amount display is performed.

Furthermore, various problems are caused by identifying an incorrect remaining battery level.
For example, if there is almost no remaining battery power and it is recognized that there is remaining battery power, the digital camera power is turned off before the data recording is completed or the lens is not closed. There was a problem that the data inside was lost or the lens was dirty or cracked. There is also a problem that the digital camera power is turned off and the battery cannot be used effectively when it is identified that the battery level is low but the battery level is low. Was.

  Therefore, the present invention has been made in view of such conventional problems, and an object of the present invention is to provide an electronic device that can accurately recognize the remaining battery level and a program thereof.

In order to achieve the above object, an electronic device according to the first aspect of the present invention includes a setting unit for a user to set the type of battery;
Voltage setting means for setting an end voltage of the battery corresponding to the type of battery set by the setting means;
A judging means for judging whether or not a battery is set;
First display control means for causing the display means to display a screen prompting the user to set the battery type by the setting means when the determination means determines that a battery has been set;
It is provided with.

Further, for example, as described in claim 2, a determination unit that determines a current remaining battery level based on a battery end voltage set by the setting unit;
Second display control means for causing the display means to display the current remaining battery capacity determined by the determination means;
You may make it provide.

  For example, as described in claim 3, when there is no remaining battery level determined by the determination unit, a power-off unit that powers off the electronic device after performing a power-off process. You may make it provide.

Further, for example, as described in claim 4, the end voltage of the battery is
The voltage may be higher than a minimum voltage necessary for executing the power-off process.

For example, as described in claim 5, the first display control unit includes:
A screen prompting the user to set the battery type may be displayed on the display unit immediately after the determination unit determines that a battery has been set.

Further, for example, as described in claim 6, an instruction unit for a user to power on a power source of the electronic device;
When the instruction means instructs to turn on the power, the power on means for turning on the electronic device;
With
The first display control means includes
When the power is turned on for the first time by the power-on means after the judgment means determines that the battery is set, a screen prompting the user to set the battery type is displayed on the display means. May be.

Further, for example, as described in claim 7, the first display control means includes:
A plurality of battery types may be displayed in a list on the display means.

Further, for example, as described in claim 8, the first display control means includes:
Each image corresponding to a plurality of battery types may be displayed in a list.

Further, for example, as described in claim 9, the first display control means includes:
Each name corresponding to a plurality of battery types may be displayed in a list.

For example, as described in claim 10, the first display control unit includes:
A message for prompting the user to set the battery may be displayed on the display means.

In addition, for example, as described in claim 11, the determination unit includes:
Judgment whether power is supplied from the battery from the state where power is not supplied from the battery, determination of whether the battery lid is opened or closed, or whether the battery is installed Based on one of the determinations, it may be determined whether or not a battery has been set.

In order to achieve the above object, a program according to the invention of claim 12 includes a setting means for a user to set the type of battery,
Voltage setting means for setting an end voltage of the battery corresponding to the type of battery set by the setting means;
A program for executing an electronic device comprising:
A process for determining whether or not a battery is set;
If it is determined that the battery is set by this process, a process for displaying a screen prompting the user to set the battery type on the display unit;
And each of the above processes is executed by an electronic device.

  According to the first aspect of the present invention, the setting means for the user to set the battery type, the voltage setting means for setting the end voltage of the battery corresponding to the battery type set by the setting means, and the battery A display for displaying a screen prompting the user to set the battery type by the setting unit when the determination unit determines that a battery has been set. Since the first display control means is provided, it is possible to prevent forgetting to set the battery type when the battery is replaced.

  According to the second aspect of the present invention, the determination means for determining the current remaining battery level based on the end voltage of the battery set by the setting means, and the current remaining battery level determined by the determination means And a second display control unit for displaying on the display unit, so that the remaining battery level can be accurately recognized and an appropriate remaining battery level can be displayed.

  According to a third aspect of the present invention, when there is no remaining battery level determined by the determination unit, a power-off unit for powering off the power source of the electronic device after performing a power-off process is provided. The battery remaining amount can be recognized accurately, and the power-off process can be surely executed before turning off the power. That is, the power is not turned off during data recording or without closing the lens.

  According to the invention of claim 4, since the end voltage of the battery is a voltage higher than the minimum voltage necessary for executing the power-off process, the power-off process is surely performed before the power is turned off. Can be executed.

  According to a fifth aspect of the present invention, the first display control means displays a screen prompting the user to set the type of battery immediately after the determination means determines that a battery has been set. This makes it possible to prevent the user from forgetting to set the battery type when replacing the battery.

  According to the sixth aspect of the present invention, when the user instructs to turn on the power of the electronic device, and when the user instructs to power on the power by the instruction, the power of the electronic device is turned off. Power on means for turning on, and the first display control means is configured to prompt the user when the power is first turned on by the power on means after the judgment means judges that the battery is set. On the other hand, since the screen prompting the user to set the battery type is displayed on the display means, the battery type can be set when the electronic device is first turned on after battery replacement. You can prevent forgetting your settings.

  According to the invention of claim 7, since the first display control means causes the display means to display a list of a plurality of battery types, the user can immediately set the battery, Forgetting to set the battery type can be reliably prevented.

  According to the invention described in claim 8, since the first display control means displays a list of images corresponding to a plurality of types of batteries, it is possible to easily set the batteries. Even when the name of the battery is unknown, it is possible to easily set the battery by looking at the battery image.

  According to the ninth aspect of the invention, since the first display control means displays a list of names corresponding to a plurality of battery types, the battery can be easily set.

  According to the tenth aspect of the present invention, the first display control means displays a message prompting the user to set the battery on the first display means. It can be surely prevented.

  According to the eleventh aspect of the present invention, the determination means determines whether or not power is supplied from the battery from a state where no power is supplied from the battery, or whether or not the battery lid is opened or closed. Whether or not the battery has been set is determined based on any one of the determination of whether or not the battery is installed or not. Can be reliably determined.

  According to the invention of the twelfth aspect, the electronic device of the present invention can be realized by being read by a digital camera, a personal computer or the like.

Hereinafter, the present embodiment will be described in detail with reference to the drawings as an example to which a digital camera is applied.
[Embodiment]
A. Configuration of Digital Camera FIG. 1 is a block diagram showing a schematic electrical configuration of a digital camera 1 that implements the electronic apparatus of the present invention.
The digital camera 1 includes a photographic lens 2, a lens driving block 3, an aperture / shutter 4, a CCD 5, a TG (timing generator) 6, a unit circuit 7, a DRAM 8, a memory 9, a CPU 10, a sub microcomputer 11, a key input unit 12, and a power circuit. 13, (replaceable) battery 14, flash memory 15, and image display unit 16.

  The photographing lens 2 includes a focus lens and a zoom lens (not shown), and a lens driving block 3 is connected thereto. The lens driving block 3 includes a focus motor and a zoom motor that drive a focus lens and a zoom lens (not shown) in the optical axis direction, and a focus motor that drives the focus motor and the zoom motor in the optical axis direction according to a control signal from the CPU 10, respectively. It consists of a driver and a zoom motor driver.

The aperture / shutter 4 includes a drive circuit (not shown), and the drive circuit operates the aperture / shutter in accordance with a control signal sent from the CPU 10. The aperture / shutter functions as an aperture and a shutter.
The diaphragm is a mechanism that controls the amount of light that enters from the photographic lens 2, and the shutter is a mechanism that controls the time that light is applied to the CCD 5, and the time that light is applied to the CCD 5 is It varies depending on the shutter opening / closing speed (shutter speed). Exposure can be determined by the aperture and shutter speed.

The CCD 5 converts the light of the subject projected through the photographing lens 2 and the diaphragm / shutter 4 into an electrical signal and outputs it as an imaging signal to the unit circuit 7. The CCD 5 is driven in accordance with a predetermined frequency timing signal generated by the TG 6. A unit circuit 7 is connected to the TG 6.
The unit circuit 7 includes a CDS (Correlated Double Sampling) circuit that holds the imaging signal output from the CCD 5 by correlated double sampling, an AGC (Automatic Gain Control) circuit that performs automatic gain adjustment of the imaging signal after the sampling, The A / D converter converts an analog image pickup signal after automatic gain adjustment into a digital signal. The image pickup signal of the CCD 5 is sent to the CPU 10 as a digital signal through the unit circuit 7.

The CPU 10 performs image processing (pixel interpolation processing, γ correction, luminance color difference signal generation, white balance processing, exposure correction processing, etc.) of the image data sent from the unit circuit 7, and compression / decompression (for example, JPEG) of the image data. This is a one-chip microcomputer that has a function of performing processing such as compression / decompression of a format or MPEG format and controls each part of the digital camera 1.
The DRAM 8 is used as a buffer memory for temporarily storing image data sent to the CPU 10 after being imaged by the CCD 5 and also as a working memory for the CPU 10.

The sub-microcomputer 11 has a function of controlling the power supply circuit 13, acquiring a battery voltage value of the battery 14, an operation signal from the key input unit 12, and the like and outputting the operation signal to the CPU 10.
The key input unit 12 includes a plurality of operation keys such as a power On / Off key, a shutter button, a menu key, a SET key, and a cross key, and outputs an operation signal corresponding to a user's key operation to the sub-microcomputer 11.
The power supply circuit 13 outputs the voltage to the sub-microcomputer 11 after stabilizing the voltage of the battery 14 to a voltage necessary for the supply target such as the sub-microcomputer 11 and the CPU 10. Note that the power supply circuit 13 causes the voltage of the battery 14 to become a stable voltage in accordance with the control signal of the sub-microcomputer 11.

The flash memory 15 is a recording medium that stores image data captured by the CCD 5.
The image display unit 16 includes a color LCD and its driving circuit, displays a battery setting menu and a remaining battery level, and displays a subject imaged by the CCD 5 as a through image when in a shooting standby state.

The memory 9 stores a program necessary for controlling each part of the digital camera 1 by the CPU 10 and data necessary for controlling each part. The CPU 10 performs processing according to this program.
The memory 9 also stores the name of the battery type and the battery image (including photographs, pictures, etc.) corresponding to the name, and also stores the set battery type. There is also a voltage storage area for storing the end voltage value corresponding to the area and the set battery type.

Further, the memory 9 has a voltage value table in which end voltage values corresponding to the types of batteries are stored.
FIG. 2 shows a voltage table stored in the memory 9, and the end voltage value, 70% voltage value, 50 voltage value, and 30% voltage value for each type of battery are recorded in the voltage table. . The end voltage value is a voltage value that determines that there is no remaining battery power when the battery voltage reaches this voltage value, and the 70% voltage value is the battery voltage when the battery voltage reaches this voltage value. It is a voltage value at which the remaining amount is determined to be 70%, the 50% voltage value is a voltage value at which the remaining battery level is determined to be 50%, and the 30% voltage value is a remaining battery level of 30%. It is a voltage value judged to be%.
Note that programs and the like necessary for controlling each unit by the sub-microcomputer 11 are recorded in a memory built in the sub-microcomputer 11.

B. Operation of Digital Camera 1 The operation of the digital camera 1 in the embodiment will be described by dividing it into two operations of the sub-microcomputer 11 and the CPU 10.

B-1. Operation of Sub-Microcomputer 11 First, the operation of the sub-microcomputer 11 will be described with reference to the flowchart of FIG.
First, the sub-microcomputer 11 determines whether or not a battery has been inserted by the user (step S1). The determination as to whether or not the battery has been inserted is made based on whether or not electric power is supplied from the battery 14 via the power supply circuit 13 from a state where no electric power is supplied from the battery 14.

If it is determined in step S1 that the battery has been inserted, the reset of the sub-microcomputer 11 is released, and the sub-microcomputer 11 turns on a reset flag indicating that it has returned from the reset state at this time (step S2).
Next, the sub-microcomputer 11 executes various initialization processes (step S3), and then causes the CPU 10 to supply the voltage supplied from the battery 14 via the power supply circuit 13 (step S4). As a result, the power source of the CPU 10 is turned on.
Next, the sub-microcomputer 11 determines whether or not the reset flag is turned on (step S5).

If it is determined in step S5 that the reset flag has been turned on, the sub-microcomputer 11 determines that the battery has been turned on, turns the reset flag off (step S6), and indicates that the battery has been turned on. Information is output (output) to the CPU 10 (step S7), and the process proceeds to step S9.
On the other hand, if it is determined in step S5 that the reset flag is not turned on, the CPU 10 is notified (output) of information indicating that it has been started normally (step S8), and the process proceeds to step S9. The normal activation means that the power of the CPU 10 is turned on by the user's power On / Off key instead of turning on the power of the CPU 10 by turning on the battery.

In step S9, the sub-microcomputer 11 performs normal processing. In this normal processing, an operation signal from the key input unit 12 is output to the CPU 10 or the power supply circuit 13 is controlled.
Next, the sub-microcomputer 11 determines whether or not to turn off the CPU 10 (step S10). The determination as to whether or not to turn off the power is made when a power off notification (information indicating that the power of the CPU 10 is turned off) is sent from the CPU 10 or when the user operates the power On / Off key of the key input unit 12. When an operation signal for turning off the power is sent, it is determined that the power is turned off.

If it is determined in step S10 that the power is not turned off, the process returns to step S9, and normal processing is performed until it is determined that the power is turned off.
On the other hand, if it is determined in step S10 that the power is turned off, the sub-microcomputer 11 stops the voltage supply to the CPU 10 (step S11), and the sub-microcomputer enters a sleep state (step S12). That is, the CPU 10 enters the sleep state after the power of the CPU 10 is turned off.

Next, the sub-microcomputer 11 determines whether to turn on the power (step S13). The determination as to whether or not to turn on the power is made based on whether or not an operation signal for turning on the power is sent from the key input unit 12 by the user's operation of the power on / off key.
If it is determined in step S13 that the power is not turned on, the process returns to step S12, and the sleep state is maintained until it is determined that the power is turned on.
On the other hand, if it is determined in step S13 that the power is turned on, the sub-microcomputer 11 exits from the sleep state, returns to step S4, turns on the power of the CPU 10 by supplying voltage to the CPU 10, and repeats the above operation.

B-2. Next, the operation of the CPU 10 will be described with reference to the flowchart of FIG.
When the power is turned on when the voltage is supplied from the sub-microcomputer 11, the CPU 10 executes various initialization processes (step S51), and starts up normally with information indicating that the battery has been inserted. It is determined which information has been sent from the sub-microcomputer 11 among the information indicating the fact (step S52). This determination is performed by waiting until either one of the information is sent from the microcomputer 11.

If it is determined in step S52 that information indicating that the battery has been inserted is sent from the sub-microcomputer 11, the CPU 10 causes the image display unit 16 to display a battery setting menu. More specifically, the battery type name and image (including photographs, pictures, etc.) are displayed in a list on the image display unit 16 (step S53), and the currently set battery (battery used last time). Is displayed in a discriminative manner (step S54). Since the currently set battery type is stored in the battery storage area of the memory 9, information indicating the battery type stored in the battery storage area is read out to discriminate the read battery type. Will be displayed.
Here, the type of the currently set battery (the battery used last time) is an alkaline battery.

FIG. 5A shows the state of the battery setting menu displayed on the image display unit 16 at that time. The image display unit 16 displays the name of the type of battery and the image of the battery corresponding to the name. Are displayed in a list, and the currently set battery type, here, the alkaline battery is discriminated.
Next, the CPU 10 determines whether or not the user has operated the SET key (step S55). This determination is made based on whether or not an operation signal corresponding to the operation of the SET key has been sent from the key input unit 12 via the sub-microcomputer 11.

If it is determined in step S55 that the SET key has not been operated, it is determined whether or not a battery has been selected by the user (step S56). This determination is made based on whether or not an operation signal corresponding to the operation of the cross key of the key input unit 12 is sent from the key input unit 12 via the sub-microcomputer 11.
If it is determined in step S56 that the battery has been selected, the selected battery is displayed in a different manner (step S57), and the process returns to step S55. If it is determined in step S56 that the battery has not been selected, the process is continued. The process returns to step S55.
By operating the cross key during the loop of step S55 to step S57, the user can select the type of the inserted battery.

For example, when the user operates the “↑” key of the cross key in the state shown in FIG. 5A, the lithium battery is selected, and the lithium battery is displayed differently from other batteries. (See FIG. 5 (b)). In addition, when the user operates the “↓” key of the cross key in the state shown in FIG. 5A, the manganese battery is selected, and the manganese battery is displayed differently from other batteries. (Not shown). This allows the user to select the type of battery that has just been inserted.
The user can determine that the selected battery is the type of the battery that has just been inserted by selecting the battery that has just been inserted and operating the SET key.
Here, it is assumed that the user selects a lithium battery by operating the cross key and operates the SET key.

  Returning to the flowchart of FIG. 4, when it is determined in step S55 that the SET key has been operated, the CPU 10 sets the selected battery as the currently inserted battery (step S58). That is, the information indicating the type of the battery stored in the battery storage area of the memory 9 is overwritten with the information indicating the type of the selected battery.

  Next, an end voltage value corresponding to the set battery type is set (step S59). That is, an end voltage value (including 70% voltage value, 50% voltage value, and 30% voltage value) corresponding to the set battery type (battery type stored in the battery storage area) is stored in the memory 9. It is read from the stored voltage value table and stored in the voltage storage area. At this time, if an end voltage value or the like is stored in the voltage storage area, it is overwritten and stored.

  This end voltage value is a voltage that determines that there is no remaining battery power when the voltage of the battery 14 reaches this voltage. This end voltage value is a voltage that takes into account the power required to perform the power-off process described later, and does not mean that there is no remaining battery power when the end voltage value is reached. Note that the end voltage value varies depending on the discharge characteristics of the battery, and needless to say, it varies depending on the type of battery.

Next, the CPU 10 sends a power off notification (information indicating that the power of the CPU 10 is turned off) to the sub-microcomputer 11 (step S66). As a result, the sub-microcomputer 11 stops the voltage supply to the CPU 10, and the power of the CPU 10 is turned off.
That is, when the battery 14 is inserted (when the battery is replaced), the power source of the CPU 10 is turned on, and the CPU 10 causes the image display unit 16 to display a battery setting menu. When the battery type is set, the power source of the CPU 10 is turned off.

On the other hand, if it is determined in step S52 that information indicating that the battery has been started is sent from the sub-microcomputer 11 instead of information indicating that the battery has been inserted, the CPU 10 performs normal processing (step S60). ). The normal processing refers to processing for starting imaging by the CCD 5, displaying the captured image data on the image display unit 16, and recording the captured image data in the flash memory 15.
Next, the CPU 10 acquires the voltage value of the battery 14 via the power supply circuit 13 and the sub-microcomputer 11 (step S61).

  Next, the CPU 10 determines the remaining battery level using the acquired voltage value, and causes the image display unit 16 to display the determined remaining battery level (step S62). The battery remaining amount is determined using the acquired voltage value and the end voltage value, 70% voltage value, 50% voltage value, and 30% voltage value of the battery 14 stored in the voltage storage area of the memory 9. The battery remaining amount is determined. At this time, for example, when the acquired voltage value is the end voltage value, it is determined that the remaining battery level is 0%, that is, there is no remaining battery level. When the acquired voltage value is 50%, the remaining battery level is determined. The amount is determined to be 50%, that is, the remaining amount is half.

Further, when the acquired voltage value is a voltage value between 70% voltage value and 50 voltage value, the remaining battery level is calculated by using the acquired voltage value, 70% voltage value and 50% voltage value. Determine the amount.
In the voltage value table, only the end voltage value for each type of battery is stored, and the remaining battery level is determined by calculation using the acquired voltage value of the battery 14 and the end voltage of the battery 14. You may do it.

Next, the CPU 10 determines whether or not the acquired voltage value of the battery 14 has dropped to the end voltage value of the battery 14 (step S63). That is, it is determined whether or not the voltage value of the battery 14 has dropped to the end voltage value stored in the voltage storage area of the memory 9.
If it is determined in step S63 that the acquired voltage value of the battery 14 has not decreased to the end voltage value of the battery 14, the process returns to step S60, the normal process is performed, and the above-described operation is repeated.

On the other hand, when it is determined in step S63 that the acquired voltage value of the battery 14 has decreased to the end voltage value of the battery 14, the CPU 10 starts the Power Off process (step S64). The power-off processing means that when image data is currently being recorded in the flash memory 15, the CPU 10 is powered on by completing the image data recording processing or storing the lens in a predetermined position. This is an operation process necessary for setting the Off state.
Next, the CPU 10 determines whether or not the Power Off process has been completed (step S65). If it is determined that the power off process has not been completed, the CPU 10 remains in step S65 until it is determined that the power off process has been completed.

  On the other hand, when it is determined in step S65 that the Power Off process is completed, that is, when the recording of the image data in the flash memory 15 and the storage of the lens are completed, the CPU 10 notifies the sub microcomputer 11 of the Power Off (the power of the CPU 10). (Information to turn off) is sent (step S66). As described above, when the power-off notification is sent from the CPU 10, the sub-microcomputer 11 enters the sleep state after stopping the supply of voltage to the CPU 10.

C. As described above, in the embodiment, when the sub-microcomputer 11 determines that the battery 14 has been turned on, the CPU 10 turns on the power of the CPU 10 by supplying a voltage to the CPU 10 and notifies that the battery has been turned on. When the CPU 10 is notified that the power is turned on and the battery has been inserted, the CPU 10 displays a battery setting menu in order to allow the user to set the battery. Forgetting can be prevented, and the remaining battery level can be accurately recognized.
In addition, since the remaining battery level can be accurately recognized, an appropriate remaining battery level can be displayed.

In the above embodiment, when the battery is turned on, the power of the CPU 10 is turned on and the battery setting menu is displayed on the image display unit 16. You may make it display a battery setting menu on the image display part 16 at the time of operation.
Further, when the battery is inserted (when the battery is replaced), the battery setting menu is displayed on the image display unit 16, but a message for prompting the battery setting may be displayed. The message may be, for example, a sentence “Please set the battery” or an icon that prompts the user to set the battery. In this case, the user can operate the menu key to display the battery setting menu and set the battery.

Further, in step S1 of FIG. 3, when the power is supplied from the battery 14 from the state where the power is not supplied from the battery 14, it is determined that the battery is inserted. It may be determined whether or not a lid (battery lid) is closed or not, or whether or not a battery is attached. That is, when it is determined that the battery lid is opened or closed, or when it is determined that the battery is attached, it may be determined that the battery is inserted.
Whether the battery lid is opened or closed is determined by a sensor or switch button that detects whether the battery lid is opened or closed, and whether or not a battery is installed is also determined by whether a sensor is installed or not. Judgment is made by a switch button.

In addition, as the battery setting menu, names and images of a plurality of types of batteries are displayed as a list, but only images may be displayed as a list, or only names may be displayed as a list. .
In addition, the remaining battery level and the battery setting menu are displayed on the image display unit 16, but a display unit for displaying the remaining battery level may be provided separately, and the remaining battery level may be displayed on the display unit. .

  In step S55 of FIG. 4, when it is determined that the user has operated the SET key, the process proceeds to step S58. However, in step S54 and step S57, a new battery is selected after the discrimination display. Without branching (branch to N in step S55), if the predetermined time has elapsed, it may be determined that the set key has been operated, and the process may proceed to step S58. If the power-off operation is performed by the user's power-on / off key operation, it is determined that the set key is operated (branch to Y in step S55), and the selected battery is set. (Step S58) After setting the end voltage corresponding to the set battery type (Step S59), a power-off notification may be made, and the sub-microcomputer 11 may turn off the power of the CPU 10.

  Further, since the discharge characteristics of the battery also change depending on the battery temperature, the final voltage value, the 70% voltage value, etc. are further recorded for each battery temperature in the voltage value table of the memory 9, and the battery type and the battery temperature are recorded. May be set to the end voltage value corresponding to, or the remaining battery level may be determined. Alternatively, the end voltage value or the like corresponding to each battery temperature may be calculated and obtained without recording the end voltage value or the like for each battery temperature in the table.

  Furthermore, the electronic apparatus of the present invention is not limited to the digital camera 1 in the above embodiment, and may be a mobile phone, a PDA, a personal computer, an IC recorder, a portable music player, a digital video camera, or the like. Any device can be used.

1 is a block diagram of a digital camera according to an embodiment of the present invention. 3 shows a voltage table stored in the memory 9. It is a flowchart which shows operation | movement of the submicrocomputer 11 in this Embodiment. It is a flowchart which shows operation | movement of CPU10 in this Embodiment. It is a figure which shows the battery setting menu displayed on the image display part.

Explanation of symbols

1 Digital Camera 2 Shooting Lens 3 Lens Drive Block 4 Shutter / Shutter 5 CCD
6 TG
7 Unit circuit 8 DRAM
9 Memory 10 CPU
11 Sub-microcomputer 12 Key input unit 13 Power supply circuit 14 Battery 15 Flash memory 16 Image display unit

Claims (12)

A setting means for the user to set the battery type;
Voltage setting means for setting an end voltage of the battery corresponding to the type of battery set by the setting means;
A judging means for judging whether or not a battery is set;
First display control means for causing the display means to display a screen prompting the user to set the battery type by the setting means when the determination means determines that a battery has been set;
An electronic device characterized by comprising: A determination means for determining a current remaining battery level based on the end voltage of the battery set by the setting means;
Second display control means for causing the display means to display the current remaining battery capacity determined by the determination means;
The electronic apparatus according to claim 1, further comprising: 3. The electronic device according to claim 2, further comprising a power-off unit that powers off the power source of the electronic device after performing a power-off process when there is no remaining battery level determined by the determination unit. . The final voltage of the battery is
4. The electronic apparatus according to claim 3, wherein the voltage is equal to or higher than a minimum voltage necessary for executing the power-off process. The first display control means includes
5. The display unit according to claim 1, wherein a screen prompting a user to set a battery type is displayed on the display unit immediately after the determination unit determines that a battery has been set. 6. Electronics. Instruction means for a user to power on the electronic device;
When the instruction means instructs to turn on the power, the power on means for turning on the electronic device;
With
The first display control means includes
When the battery is first set by the power-on means after the determination means determines that the battery has been set, a screen prompting the user to set the battery type is displayed on the display means. The electronic device according to claim 1, wherein the electronic device is characterized in that: The first display control means includes
7. The electronic apparatus according to claim 1, wherein a list of a plurality of battery types is displayed on the display means. The first display control means includes
8. The electronic apparatus according to claim 7, wherein a list of images corresponding to a plurality of types of batteries is displayed. The first display control means includes
9. The electronic apparatus according to claim 7, wherein a list of names corresponding to a plurality of types of batteries is displayed. The first display control means includes
7. The electronic apparatus according to claim 1, wherein a message prompting the user to set a battery is displayed on the display unit. The determination means includes
Judgment whether power is supplied from the battery from the state where power is not supplied from the battery, determination of whether the battery lid is opened or closed, or whether the battery is installed 11. The electronic apparatus according to claim 1, wherein a determination is made as to whether or not a battery has been set based on any one of the determinations. A setting means for the user to set the battery type;
Voltage setting means for setting an end voltage of the battery corresponding to the type of battery set by the setting means;
A program for executing an electronic device comprising:
A process for determining whether or not a battery is set;
If it is determined that the battery is set by this process, a process for displaying a screen prompting the user to set the battery type on the display unit;
And executing the above-described processes on an electronic device.

Images