JP2014023130A - Camera device, power control method thereof, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve quick photographing while suppressing consumption of a battery.SOLUTION: After photographic processing according to a photographic instruction operation is completed, a control section 2 for controlling a digital camera 1 is made to determine whether a photographer performs a predetermined operation or not within a specific operation period. The control section turns off the power automatically when the photographer does not perform a predetermined operation within a specific operation period, and executes the procedure to maintain the power in an ON state when the photographer performs a predetermined operation within a specific operation period.

Description

  The present invention relates to a power supply control technique for performing shooting while suppressing battery consumption in a camera device.

  Conventionally, a digital camera is generally provided with a known auto power-off function that automatically turns off the power when there is no operation within a predetermined time while the power is on. Further, for example, Patent Document 1 below describes a technique for automatically turning off the power after the photographing is completed, unlike the above-described general auto power-off function. If a predetermined shooting mode that implements such a technique is provided in the digital camera separately from the normal shooting mode, the photographer can suppress battery consumption without performing a complicated operation of turning off the power after shooting. . In addition, battery consumption (power consumption) can be more effectively suppressed than when the power is automatically turned off by the auto power off function.

JP 2001-257920 A (paragraph [0040])

  However, when the photographer uses the predetermined photographing mode described above, there are the following problems. For example, when a shooting opportunity comes immediately after shooting, the photographer cannot take the next shooting unless the power is turned on again, and misses the next shooting opportunity. That is, there is a problem that the second and subsequent shooting cannot be performed instantaneously.

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a camera device capable of performing quick photographing while suppressing battery consumption, a power supply control method thereof, and a program.

  In order to solve the above-described problem, in the present invention, a first automatic power shut-off unit that automatically turns off the power after the photographing process corresponding to the photographing instruction operation is completed, and a specification after the photographing process is started And a first stop means for stopping the power-off operation by the first automatic power shut-off means when a predetermined operation is performed by the photographer within the operation period.

  According to the present invention, it is possible to perform quick shooting while suppressing battery consumption.

It is a block diagram of a camera showing one embodiment of the present invention. It is a flowchart which shows the process regarding quick imaging | photography mode. It is a flowchart following FIG.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a block diagram showing an outline of an electrical configuration of a digital camera 1 exemplified as an embodiment of the present invention.

  As shown in FIG. 1, the digital camera 1 includes a control unit 2, a power supply unit 3, a lens unit 4, an imaging unit 5, an image storage unit 6, a program storage unit 7, a display unit 8, and an operation unit 9. I have.

  The control unit 2 includes a CPU (Central Processing Unit), its peripheral circuits, and a working internal memory such as a RAM (Random Access Memory), and controls each unit of the digital camera 1. Further, the control unit 2 includes a sub CPU that detects the operation of the power supply unit 3 described later and the operation state of the operation key in the operation unit 9.

  The power supply unit 3 includes a rechargeable battery and a DC / DC converter, and supplies power necessary for each operation to each unit of the digital camera 1.

  The lens unit 4 includes a lens group including a focus adjustment lens and a zoom lens, a motor that drives the lens group, a diaphragm, and an actuator that opens and closes the diaphragm to adjust the opening.

  The imaging unit 5 performs predetermined analog processing on a CCD (Charge Coupled Device) or CMOS (Complementary Meta10xide Semiconductor) type imaging device and an imaging signal output from the imaging device, and then converts the analog signal into a digital signal. It consists of AFE (Analog Front End). The imaging unit 5 sequentially images the subject via the lens group of the lens unit 4 while the digital camera 1 operates in the shooting mode, and supplies the subject image data (imaging data) to the control unit 2.

  The image data supplied to the control unit 2 is converted into RGB data for each pixel in the control unit 2 and further converted into YUV data composed of a luminance (Y) component and a color difference (UV) component, and then in the control unit 2. Various processes relating to image quality such as white balance adjustment and edge enhancement are performed. Hereinafter, the above processing for the image data supplied to the control unit 2 is referred to as development processing. The image data (YUV data) after the development processing is supplied to the display unit 8 and is displayed on the display unit 8 as a through image (synonymous with a so-called live view image).

  Further, the YUV data after the development processing at the time of photographing, that is, photographed image data, is compressed by the control unit 2 by the JPEG (Joint Photographic Expert Group) method. Various attribute information is added to the compressed captured image data, and the captured image data is stored in the image storage unit 6 as a still image file compliant with the Exif (Exchangeable Image File Format) standard.

  In the following description, a series of processes from imaging of the subject by the imaging unit 5 at the time of shooting to storage of the still image file in the image storage unit 6 is referred to as imaging processing.

  The image storage unit 6 includes, for example, a flash memory built in the digital camera 1, various memory cards that can be attached to and detached from the digital camera 1, and a card interface that enables data input and output to the memory card.

  The image data stored as a still image file in the image storage unit 6 is read and expanded by the control unit 2 while the playback mode is set in the digital camera 1, and then supplied to the display unit 8 for screen display. Is done.

  The display unit 8 includes a color liquid crystal display panel and a display drive circuit that drives the color liquid crystal display panel in accordance with image data supplied from the control unit 2. As described above, in the shooting mode, a through image is displayed. In the playback mode, an existing captured image composed of image data stored as a still image file in the image storage unit 6 is displayed. The display unit 8 also displays character information and the like based on various OSD (On Screen Display) display data supplied from the control unit 2.

  The operation unit 9 includes a plurality of operation keys such as a power key, a shutter key, and a mode switching key used for switching between a shooting mode and a playback mode, which are basic operation modes of the digital camera 1. The operation state of the operation keys in the operation unit 9 is monitored by the control unit 2 as needed. Note that the shutter key has a configuration that can be operated in two stages, a half-press operation and a full-press operation.

  The program storage unit 7 is composed of a nonvolatile memory such as a flash memory in which stored data can be rewritten as needed. The program storage unit 7 stores in advance a program for causing the control unit 2 to perform processing described later shown in FIG. The program storage unit 7 also stores setting information regarding various functions of the digital camera 1, and various setting information that is changed by the user or automatically changed as necessary.

  Further, the program storage unit 7 is used for a program for causing the control unit 2 to perform AE (Auto Exposure) control, AF (Auto Focus) control, AWB (Auto White Balance) control, and the like, and AE control. Various data such as data constituting a program diagram showing combinations of shutter speed, ISO sensitivity, and aperture value are also stored.

  On the other hand, in the digital camera 1 of the present embodiment configured as described above, the power is automatically turned off when the user does not perform an operation for a certain time as an operation mode in which specific power control is performed by the control unit 2. A general auto power off function and a quick shooting mode are provided.

  Here, the quick shooting mode enables quick shooting when a sudden shooting opportunity occurs even when the power is off, and at the same time, reduces battery consumption (power consumption) after shooting. It is a shooting mode.

  Specifically, in the quick shooting mode, when the shutter key is pressed (half-pressed or fully pressed) while the power is off, the power is automatically turned on, and then the camera can immediately shoot. This is an operation mode in which the power is automatically turned off after shooting. The time until the power is turned off after shooting in the quick shooting mode is shorter than the time until the power is turned off by the auto power off function (for example, 1 to 5 minutes).

  The quick shooting mode is effective only when the user has set the use of the mode in advance, and there are two types of modes, mode 1 and mode 2, in the quick shooting mode.

  Details of the quick shooting mode provided in the digital camera 1 will be described below. FIG. 2 is a flowchart showing a process executed by the control unit 2 when the user presses the shutter key while the power is off when the use of the quick shooting mode is set in advance by the user. is there.

  The controller 2 determines whether or not the quick shooting mode is set when the shutter key is pressed (half pressed or fully pressed) by the photographer with the power off (step S1), and the quick shooting mode is set. Is set immediately after the power is turned on and initial setting such as lens extension is performed (step S2), the imaging unit 5 is started to perform an imaging operation at a predetermined frame rate. Display of the through image at 8 is started (step S3).

  Next, the control unit 2 determines whether or not the shutter key is fully pressed by the photographer. That is, it is determined whether the shutter key has been fully pressed from the time of step S0, or whether the shutter key has been pressed halfway at the time of step S0 and then the shutter key has been fully pressed (step S4). Then, until the shutter key is fully pressed (step S4: NO), the control unit 2 continues to display the through image and updates the through image at a predetermined frame rate. At this time, if the shutter key is kept pressed halfway, a shooting preparation operation such as autofocus or automatic exposure is executed.

  When the shutter key is fully pressed during display of the through image (during execution of the shooting preparation operation) (step S4: YES), the control unit 2 temporarily stops the display of the through image (step S5), and then performs imaging. The photographing process for obtaining the photographed image data by causing the unit 5 to perform the photographing operation for photographing is performed (step S6).

  Then, the control unit 2 performs development processing of the acquired captured image data (step S7), compresses the captured image data after the development processing, generates a still image file, and stores the still image file in the image storage unit. 6 is written (step S8).

  Although not shown, the control unit 2 confirms whether or not the photographer has operated the key while stopping the display of the through image, and within the operation period until the writing of the still image file to the image storage unit 6 is completed. When there is no key operation (step S9: NO), as shown in FIG. 3, the lens is immediately stored and the power is turned off (step S22), and all the processes are ended.

  As a result, if the photographer does not perform any key operation immediately after the photographing operation, the power is turned off immediately without operating the power key or waiting for the power to be turned off by the auto power off function. can do. As a result, it is possible to more effectively suppress useless battery consumption as compared with a normal auto power-off function.

  On the other hand, when any key operation is performed during the above operation period (step S9: YES), the control unit 2 first performs a detection process for detecting the face of an arbitrary person using the captured image as a target ( Step S10).

  Then, when a face larger than a predetermined size is detected (step S11: YES), the control unit 2 automatically sets mode 1 as the type of the quick shooting mode (step S12). ). In addition, when a face larger than a predetermined size cannot be detected (step S11: NO), the control unit 2 automatically sets mode 2 as the type of the quick shooting mode (step S13).

  Subsequently, as shown in FIG. 3, the control unit 2 resumes the display of the through image (step S14), and when the mode 1 is set as the quick shooting mode (step S15: mode 1), the quick shooting mode is set. Is finished, and the processing shifts to the normal shooting mode. In this normal shooting mode, a normal auto power-off function works (the time until the power is turned off is relatively long, for example, 1 minute to 5 minutes).

  As a result, the photographer can easily and quickly perform one shooting operation from power-on, shooting, and power-off by setting the quick shooting mode. Just by performing any key operation immediately after shooting, the second and subsequent shooting can be performed quickly without turning on the power again.

  On the other hand, when the mode 2 is set as the quick shooting mode (step S15: mode 2), the control unit 2 immediately counts the elapsed time by the timer function using the internal clock while continuing the quick shooting mode. Start (step S16).

  Thereafter, the control unit 2 (step 2) until the elapsed time reaches a predetermined number of seconds (a time shorter than the time until the power is turned off by the normal auto power off function, for example, 2 seconds). S17: NO), it is repeatedly confirmed whether or not the shutter key is pressed (full pressing operation) (step S18).

  If the shutter key is pressed before the elapsed time reaches the specified number of seconds (step S18: YES), the control unit 2 performs the second shooting process to acquire the captured image data and records it (see FIG. Step S19).

  On the other hand, when the elapsed time reaches the specified number of seconds without pressing the shutter key (step S17: YES), the control unit 2 immediately turns off the power at that time (step S22), Terminate the process.

  This makes it easy for the photographer to perform a series of shooting operations up to power-on, (multiple times) shooting, and power-off, which are functions of the quick shooting mode, even when shooting for the second and subsequent times. If the photographer does not need to take a second new shot due to changes in circumstances, etc., without compromising the quick function, compare it with the time until the power is turned off using the normal auto power off function. Since the power is automatically turned off in a short time, battery consumption can be more effectively suppressed.

  Subsequently, the control unit 2 confirms the degree of change of the current captured image with respect to the previous captured image (step S19). During the first step S20, the previous photographed image is a photographed image acquired by the first photographing immediately after the power is turned on.

  In the process of step S20, the control unit 2 acquires one or a plurality of pieces of image information such as the number of colors, the brightness, the shape of the contour line, etc. for the previous photographed image and the current photographed image, for example. Based on the information, the degree of change is acquired by a predetermined arithmetic expression or the like, the elementary difference between the previous captured image and the current captured image is acquired, and the degree of change is acquired from the acquired difference. The degree of change is specifically numerical information.

  When the obtained degree of change is equal to or greater than the threshold and the degree of change of the current captured image with respect to the previous captured image is large (step S21: YES), the control unit 2 returns to the process of step 16 and again. After counting the elapsed time is started, the processing after step 17 is repeated.

  That is, after performing the second and subsequent shooting processes, the control unit 2 can determine that the degree of change of the current captured image with respect to the previous captured image is large, and that shooting opportunities have been continuously visited. In some cases, continuous shooting is allowed.

  As a result, when the photographer encounters an incident or accident, for example, not only the second shooting but also the third and subsequent shootings can be performed quickly.

  On the other hand, if the degree of change of the current captured image with respect to the previous captured image is small when performing the second and subsequent imaging processes (step S21: NO), the control unit 2 immediately The power is turned off (step S22), and all the processes are finished.

  That is, when the second and subsequent shootings are performed, the control unit 2 cannot determine that the degree of change of the current captured image with respect to the previous captured image is small and that the shooting opportunities are continuously visited. In such a case, without waiting for the time until the power is turned off by the normal auto power off function, the subsequent photographing is prohibited and the power is turned off immediately. Thereby, the consumption of the battery can be suppressed more effectively.

  If there is a key operation other than pressing the shutter between step S16 and step S21, the mode may be shifted to a normal shooting mode in which a normal auto power-off function is activated.

  As described above, in the digital camera 1 of the present embodiment, by using the quick shooting mode, quick shooting can be performed when a sudden shooting opportunity occurs, and at the same time, battery consumption after shooting can be suppressed. it can.

  Then, when using the quick shooting mode, the photographer performs any key operation after the first shooting operation until the writing of the still image file is completed, that is, within a specific operation period. As a result, not only the first shooting but also subsequent shooting can be performed quickly.

  That is, when mode 1 is set as the quick shooting mode at the time of the first shooting, the photographer ends the operation in the quick shooting mode as necessary immediately after performing the first shooting operation. Can be quickly taken in the normal shooting mode.

  On the other hand, when mode 2 is set as the quick shooting mode for the first shooting, the photographer continues the operation in the quick shooting mode as needed immediately after performing the first shooting operation. You can quickly shoot after the first time.

  In addition, when the photographer no longer needs to perform a second or subsequent shooting due to changes in the situation, etc., the normal auto power-off function can be performed without any special operation by the photographer. The power is automatically turned off in a short time compared to the time until the power is turned off. Therefore, it is possible to more effectively suppress battery consumption after shooting.

  Further, after the second shooting is performed, it is automatically determined whether or not the third and subsequent new shootings are allowed. If it is determined that it is necessary to allow new shooting, further shooting can be performed. If it is determined that it is not necessary to allow new shooting, the power is automatically and immediately turned off at that time. Even in such a case, it is possible to more effectively suppress battery consumption after shooting as compared with a normal auto power-off function.

  In the digital camera 1 of the present embodiment, the key operation within the operation period until the writing of the still image file to the image storage unit 6 is determined in step S9, but the power is finally turned off. It may be determined whether or not there is a key operation before the operation.

  In addition, the key operation determined in step S9 may be determined without distinguishing between shutter pressing and other key operations, or only key operations other than shutter pressing may be determined. Further, when the shutter is pressed in step S9, not only the automatic power-off operation is canceled, but it is also assumed that there is a photographing instruction, and the operations in and after step S5 may be repeatedly executed.

  In the digital camera 1 of the present embodiment, the operation in the quick shooting mode is performed in response to pressing of the shutter key in the power-off state. However, the digital camera 1 has a power key other than the shutter key. It is possible to adopt a configuration in which an operation in the quick shooting mode is performed in response to operations of other keys except the above.

  In the present embodiment, the digital camera 1 is provided with two types of mode 1 and mode 2 as quick shooting modes, and either mode 1 or mode 2 is set when the photographer performs the first shooting. The process according to is implemented or automatically set.

  However, when implementing the present invention, a configuration may be adopted in which the type of the quick shooting mode is selected in advance when the user sets the use of the quick shooting mode. Furthermore, only the quick shooting mode of either mode 1 or mode 2 may be provided as the quick shooting mode.

  Further, in the present embodiment, the case has been described where the type of the quick shooting mode is set according to whether or not a face of a predetermined size or more has been detected in the first shot image. However, any method can be employed as a method for setting the type of the quick shooting mode as long as it is based on the content of the first shot image.

  For example, when the first shot image includes a face or a specific subject other than the face, the type of the quick shooting mode is set to mode 1, and when the specific subject does not exist, the type of the quick shooting mode is set to mode 2. You may make it do.

  In the present embodiment, when mode 2 is selected as the quick shooting mode, after the second and subsequent shootings, the third and subsequent times are performed based on the degree of change in both captured images. A description has been given of the automatic determination of whether or not to allow the new photographing (FIG. 3, steps S19 and S20). However, when implementing the present invention, such processing may be abolished.

  Needless to say, the present invention can be applied not only to a general digital camera but also to a digital camera incorporated in another device such as a mobile phone terminal including a smartphone.

As mentioned above, although several embodiment of this invention and its modification were demonstrated, if these are in the range in which the effect of this invention is acquired, it can change suitably, and embodiment after change is also a claim. It is included in the scope of the invention described in the scope of the invention and the invention equivalent to the invention.
The invention described in the scope of the claims of the present application will be appended below.
[Claim 1]
After the photographing process corresponding to the photographing instruction operation is completed, the first automatic power shut-off means for automatically turning off the power, and after the photographing process is started until the power is automatically turned off, A camera apparatus, comprising: a first stopping unit that stops a power-off operation by the first automatic power shut-off unit when a predetermined operation is performed by a photographer.
[Claim 2]
A second automatic power shut-off means for automatically turning off the power after a predetermined time has elapsed since the power-off operation by the first automatic power shut-off means was stopped by the first stop means; and the predetermined time 2. The camera according to claim 1, further comprising a second canceling unit that cancels the power-off operation by the second automatic power shut-off unit when a photographing operation is performed before the elapse of time. apparatus.
[Claim 3]
As the operation mode, a first operation mode in which the second automatic power shut-off means and the second stop means are not operated, a second automatic power shut-off means, and the second stop means are operated. 3. The camera apparatus according to claim 2, further comprising mode setting means for selectively setting the first operation mode or the second operation mode as an operation mode. .
[Claim 4]
The second automatic power shut-off means automatically turns off the power after a predetermined time elapses every time the photographing operation associated with a new photographing operation ends after the power-off operation is stopped by the second stopping means. The second canceling unit is configured to perform the second operation even when there is a photographing operation after a predetermined time elapses after the photographing operation associated with the new photographing operation is completed. 4. The camera apparatus according to claim 2, wherein the power-off operation by the automatic power shut-off means is stopped.
[Claim 5]
When no operation is performed between a time when an operation is performed in a power-on state and a time longer than a predetermined time during which the second automatic power-off unit automatically turns off the power 5. The camera apparatus according to claim 2, further comprising third automatic power shut-off means for automatically turning off the power.
[Claim 6]
Mode setting means for selectively setting the first shooting mode, and whether the first shooting mode is set by the mode setting means when a predetermined key operation is performed when the power is off A determination means for determining whether or not, and when the determination means determines that the first photographing mode is set, the power is automatically turned on and the operation of the first automatic power cut-off means is performed. 6. The camera apparatus according to claim 1, further comprising a control unit that enables the camera.
[Claim 7]
Mode setting means for selectively setting the first shooting mode, and whether the first shooting mode is set by the mode setting means when a predetermined key operation is performed when the power is off A determination means for determining whether or not the first photographing mode is set by the determination means, the power supply is automatically turned on, and the first automatic power shut-off means and 6. The camera device according to claim 5, wherein the operation of the second automatic power shut-off means is validated.
[Claim 8]
7. The camera apparatus according to claim 6, wherein the operation of the third automatic power shut-off means is validated even when the first shooting mode is not set by the mode setting means.
[Claim 9]
Each time the photographing operation associated with the new photographing operation is completed, the next operation is performed based on the photographed image obtained by the photographing operation associated with the previous photographing operation and the photographed image obtained by the photographing operation associated with the current photographing operation. The second automatic power shut-off means determines that the next shooting operation should not be allowed, if it is determined that the next shooting operation should not be allowed. 9. The camera device according to claim 4, wherein the power is turned off immediately without waiting for a predetermined time.
[Claim 10]
10. The first automatic power shut-off means automatically turns off the power after completion of the photographing process corresponding to the first photographing instruction operation immediately after the power is turned on. Camera device.
[Claim 11]
The first automatic power shut-off means automatically turns off the power after the photographing process corresponding to the first photographing instruction operation immediately after the power is turned on, and the mode setting means performs the first photographing immediately after the power is turned on. The camera apparatus according to claim 2, wherein the operation mode is selectively set based on image content acquired by a photographing process corresponding to an instruction operation.
[Claim 12]
As a shooting mode, there is provided a specific shooting mode in which a shooting standby state is set after turning on the power in accordance with a predetermined key operation when the power is in an off state. 12. The camera apparatus according to claim 10, wherein the camera apparatus is a first shooting instruction operation immediately after power-on when a specific shooting mode is used.
[Claim 13]
A power management method for a camera device, the step of determining whether or not a predetermined operation is performed by a photographer after the photographing process corresponding to the photographing instruction operation is completed and before the power is automatically turned off, The power is automatically turned off when there is no predetermined operation by the photographer within a specific operation period, and the power is turned on when there is a predetermined operation by the photographer within the specific operation period. And a step of maintaining the state.
[Claim 14]
The first automatic power shut-off means for automatically turning off the power after the photographing processing corresponding to the photographing instruction operation is completed for the computer included in the camera device, and the power is automatically turned off after the photographing processing is started A program that functions as a first canceling unit that cancels the power-off operation by the first automatic power shut-off unit when a predetermined operation is performed by the photographer.

DESCRIPTION OF SYMBOLS 1 Digital camera 2 Control part 3 Power supply part 4 Lens part 5 Imaging part 6 Image memory | storage part 7 Program memory | storage part 8 Display part 9 Operation part

Claims (14)

A first automatic power shut-off means for automatically turning off the power after the photographing processing corresponding to the photographing instruction operation is completed;
The first power-off operation by the first automatic power shut-off means is stopped when a predetermined operation is performed by the photographer after the photographing process is started and before the power is automatically turned off. And a canceling means. A second automatic power shut-off means for automatically turning off the power after a predetermined time has elapsed since the power-off operation by the first automatic power shut-off means was stopped by the first stop means;
And a second canceling unit for canceling a power-off operation by the second automatic power shut-off unit when a photographing operation is performed before the predetermined time elapses. 1. The camera device according to 1. As the operation mode, a first operation mode in which the second automatic power shut-off means and the second stop means are not operated, a second automatic power shut-off means, and the second stop means are operated. Two operation modes are provided,
The camera apparatus according to claim 2, further comprising mode setting means for selectively setting the first operation mode or the second operation mode as an operation mode. The second automatic power shut-off means automatically turns off the power after a predetermined time elapses every time the photographing operation associated with a new photographing operation ends after the power-off operation is stopped by the second stopping means. Restart the operation to turn off
The second canceling means is configured to turn off the power by the second automatic power shut-off means even when there is a photographing operation after a predetermined time elapses after the photographing operation associated with the new photographing operation is completed. The camera apparatus according to claim 2 or 3, wherein the operation is stopped.   When no operation is performed between a time when an operation is performed in a power-on state and a time longer than a predetermined time during which the second automatic power-off unit automatically turns off the power 5. The camera apparatus according to claim 2, further comprising third automatic power shut-off means for automatically turning off the power. Mode setting means for selectively setting the first shooting mode;
Determining means for determining whether or not the first shooting mode is set by the mode setting means when a predetermined key operation is performed when the power is off;
Control means for automatically turning on the power and validating the operation of the first automatic power shut-off means when the judgment means judges that the first photographing mode is set. 6. The camera device according to claim 1, further comprising a camera device. Mode setting means for selectively setting the first shooting mode;
Determining means for determining whether or not the first shooting mode is set by the mode setting means when a predetermined key operation is performed when the power is off;
When the determination unit determines that the first photographing mode is set, the power is automatically turned on, and the first automatic power cutoff unit and the second automatic power cutoff unit operate. The camera apparatus according to claim 5, wherein the camera apparatus is enabled.   7. The camera apparatus according to claim 6, wherein the operation of the third automatic power shut-off means is validated even when the first shooting mode is not set by the mode setting means. Each time the photographing operation associated with the new photographing operation is completed, the next operation is performed based on the photographed image obtained by the photographing operation associated with the previous photographing operation and the photographed image obtained by the photographing operation associated with the current photographing operation. And a judging means for judging whether or not to allow the photographing operation of
The second automatic power shut-off means turns off the power immediately without waiting for the elapse of the predetermined time when it is determined by the determination that the next photographing operation should not be permitted. The camera device according to claim 4.   10. The first automatic power shut-off means automatically turns off the power after completion of the photographing process corresponding to the first photographing instruction operation immediately after the power is turned on. Camera device. The first automatic power shut-off means automatically turns off the power after the photographing process corresponding to the first photographing instruction operation immediately after the power is turned on,
10. The mode setting unit according to claim 2, wherein the mode setting unit selectively sets an operation mode based on an image content acquired by a shooting process corresponding to a first shooting instruction operation immediately after power-on. Camera device. As the shooting mode, there is a specific shooting mode that is set to the shooting standby state after turning on the power with a predetermined key operation when the power is off,
The camera apparatus according to claim 10 or 11, wherein the first shooting instruction operation immediately after power-on is a first shooting instruction operation immediately after power-on when the specific shooting mode is used. A power management method for a camera device,
A step of determining the presence or absence of a predetermined operation by the photographer after the shooting process according to the shooting instruction operation is completed and before the power is automatically turned off;
The power is automatically turned off when there is no predetermined operation by the photographer within the specific operation period, and the power is turned off when there is a predetermined operation by the photographer within the specific operation period. A method for controlling the power supply comprising the step of maintaining the device in an on state. A computer having a camera device;
A first automatic power shut-off means for automatically turning off the power after the photographing processing corresponding to the photographing instruction operation is completed;
The first power-off operation by the first automatic power shut-off means is stopped when a predetermined operation is performed by the photographer after the photographing process is started and before the power is automatically turned off. A program characterized in that it functions as a means of canceling.

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