Electronic apparatus, and method for controlling electronic apparatus

Abstract

To provide a technique capable of preventing notification of a warning to a user from annoying the user.SOLUTION: An electronic apparatus of the present invention has: measurement means that measures the temperature of the electronic apparatus; detection means that detects a specific state in which the electronic apparatus is not held; and control means that, in a case where the temperature of the electronic apparatus is higher than a threshold, when the specific state is detected, controls to perform first notification, and when the specific state is not detected, controls to perform second notification that is more notable than the first notification.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an electronic device and a control method for an electronic device, and in particular to a technique for issuing a warning. [Background technology]

[0002] 2. Description of the Related Art When an imaging device such as a mirrorless camera detects a temperature rise or an abnormal operation, the device issues a warning to the user.

[0003] Patent Document 1 discloses a technology in which the first time a warning is displayed, the warning is displayed regardless of whether video is being recorded or not, and if it is not the first time, the warning is not displayed while video is being recorded, and the warning is displayed when video recording stops. Patent Document 2 discloses a technology in which the warning is not displayed while the release button is pressed halfway or fully pressed, but is displayed when the release button is not pressed halfway or fully pressed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-98648 [Patent Document 2] Japanese Patent Application Laid-Open No. 2003-215691 Summary of the Invention [Problem to be solved by the invention]

[0005] However, if a large guidance message is always displayed to reliably notify the user, it may be bothersome to the user and interfere with shooting, for example, because the guidance may make it difficult to check the subject (live view image).

[0006] An object of the present invention is to provide a technology that can prevent notifications from being a nuisance to a user. [Means for solving the problem]

[0007] The electronic device of the present invention is characterized by having a measuring means for measuring the temperature of the electronic device, a detecting means for detecting a specific state in which the electronic device is not being held, and a control means for controlling the electronic device to issue a first notification if the specific state is detected when the temperature of the electronic device is higher than a threshold value, and to issue a second notification that is more noticeable than the first notification if the specific state is not detected. [Effects of the Invention]

[0008] According to the present invention, it is possible to prevent warning notifications from being a nuisance to the user. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is an external view of a digital camera. [Figure 2] FIG. 1 is a block diagram of a digital camera. [Figure 3] FIG. 10 is a schematic diagram of a warning display. [Figure 4] 4 is a flowchart of an operation according to the first embodiment. [Figure 5] 10 is a flowchart of an operation according to the second embodiment. [Figure 6] 10 is a flowchart of an operation according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Figures 1(a) and 1(b) are external views of a digital camera 100 as an example of a device (electronic device, imaging device) to which the present invention can be applied. Figure 1(a) is a front perspective view of the digital camera 100, and Figure 1(b) is a rear perspective view of the digital camera 100.

[0011] The display unit 28 is a display unit provided on the back surface of the digital camera 100, and displays images and various information. The touch panel 70a can detect touch operations on the display surface (touch operation surface) of the display unit 28. The out-of-viewfinder display unit 43 is a display unit provided on the top surface of the digital camera 100, and displays various settings of the digital camera 100, including the shutter speed and aperture. The shutter button 61 is an operation member for issuing shooting instructions. The mode selector switch 60 is an operation member for switching between various modes. The terminal cover 40 is a cover that protects a connector (not shown) for connecting a connection cable or the like that connects the digital camera 100 to an external device.

[0012] The main electronic dial 71 is a rotary operation member, and by turning the main electronic dial 71, settings such as shutter speed and aperture can be changed. The power switch 72 is an operation member that switches the power of the digital camera 100 on and off. The sub electronic dial 73 is a rotary operation member, and by turning the sub electronic dial 73, the selection frame (cursor) can be moved, images can be forwarded, etc. The four-way key 74 is configured so that the up, down, left, and right parts can each be pressed, and processing can be performed according to the part of the four-way key 74 that is pressed. The SET button 75 is a push button, and is mainly used to confirm a selection item, etc.

[0013] The movie button 76 is used to start or stop movie shooting (recording). The AE lock button 77 is a push button, and pressing the AE lock button 77 in shooting standby mode fixes the exposure state. The enlarge button 78 is an operation button for switching the enlargement mode on and off in the live view display (LV display) of the shooting mode. By turning the enlargement mode on and operating the main electronic dial 71, the live view image (LV image) can be enlarged or reduced. In playback mode, the enlargement button 78 functions as an operation button for enlarging the playback image or increasing its magnification. The playback button 79 is an operation button for switching between shooting mode and playback mode. Pressing the playback button 79 in shooting mode switches to playback mode, and the most recent image recorded on the recording medium 200 (described below) can be displayed on the display unit 28. The menu button 81 is a push button used to issue an instruction to display a menu screen. Pressing the menu button 81 displays a menu screen on the display unit 28 that allows various settings to be made. The user can intuitively make various settings using the menu screen displayed on the display unit 28, the four-way key 74, and the SET button 75.

[0014] The communication terminal 10 is a communication terminal through which the digital camera 100 communicates with the lens unit 150 (described later; detachable). The eyepiece 16 is the eyepiece of the eyepiece finder 17 (a peer-type finder), and the user can view an image displayed on the internal EVF 29 (described later; electronic viewfinder) through the eyepiece 16. The eyepiece detection unit 57 is an eyepiece detection sensor that detects whether the user (photographer) has placed their eye on the eyepiece 16. The cover 202 is a cover for a slot that stores a recording medium 200 (described later). The grip unit 90 is a holding unit shaped to be easily held with the user's right hand when holding the digital camera 100. The shutter button 61 and main electronic dial 71 are positioned so that they can be operated with the index finger of the right hand when the digital camera 100 is held by gripping the grip unit 90 with the little finger, ring finger, and middle finger of the right hand. In the same state, the sub electronic dial 73 is disposed at a position that can be operated with the thumb of the right hand. The thumb rest portion 91 (thumb standby position) is a grip portion provided on the rear side of the digital camera 100, at a position where it is easy to place the thumb of the right hand that is holding the grip portion 90 when no operation members are being operated. The thumb rest portion 91 is It is made up of rubber parts to improve grip.

[0015] FIG. 2 is a block diagram showing the configuration of the digital camera 100. The lens unit 150 is a lens unit equipped with an interchangeable photographic lens. The lens 103 is usually composed of multiple lenses, but FIG. 2 shows only one lens for simplicity's sake. The communication terminal 6 is a communication terminal through which the lens unit 150 communicates with the digital camera 100, and the communication terminal 10 is a communication terminal through which the digital camera 100 communicates with the lens unit 150. The lens unit 150 communicates with the system controller 50 via these communication terminals 6 and 10. The lens unit 150 controls the aperture 1 via the aperture drive circuit 2 by the internal lens system control circuit 4. The lens unit 150 also adjusts focus by displacing the lens 103 via the AF drive circuit 3 by the lens system control circuit 4.

[0016] The shutter 101 is a focal plane shutter that can freely control the exposure time of the imaging unit 22 under the control of the system control unit 50.

[0017] The imaging unit 22 is an imaging element (image sensor) configured with a CCD, CMOS element, or the like that converts an optical image into an electrical signal. The imaging unit 22 may have an imaging surface phase difference sensor that outputs defocus amount information to the system control unit 50. The A / D converter 23 converts the analog signal output from the imaging unit 22 into a digital signal.

[0018] The image processing unit 24 performs predetermined processing (pixel interpolation, resizing such as reduction, color conversion, etc.) on data from the A / D converter 23 or data from the memory control unit 15. The image processing unit 24 also performs predetermined arithmetic processing using the captured image data, and the system control unit 50 performs exposure control and distance measurement control based on the arithmetic results obtained by the image processing unit 24. This allows for TTL (through-the-lens) type AF (autofocus) processing, AE (autoexposure) processing, EF (flash pre-flash) processing, etc. to be performed. The image processing unit 24 also performs predetermined arithmetic processing using the captured image data, and performs TTL type AWB (auto white balance) processing based on the arithmetic results obtained.

[0019] The memory control unit 15 controls the transmission and reception of data between the A / D converter 23, the image processing unit 24, and the memory 32. The output data from the A / D converter 23 is written to the memory 32 via the image processing unit 24 and the memory control unit 15. Alternatively, the output data from the A / D converter 23 is written to the memory 32 via the memory control unit 15 without going through the image processing unit 24. The memory 32 stores image data obtained by the imaging unit 22 and converted into digital data by the A / D converter 23, as well as image data to be displayed on the display unit 28 and the EVF 29. The memory 32 has a storage capacity sufficient to store a predetermined number of still images and a predetermined period of moving images and audio.

[0020] The memory 32 also serves as a memory (video memory) for image display. The D / A converter 19 converts the display image data stored in the memory 32 into an analog signal and supplies it to the display unit 28 or the EVF 29. In this way, the display image data written to the memory 32 is displayed on the display unit 28 or the EVF 29 via the D / A converter 19. The display unit 28 and the EVF 29 are each a display such as an LCD or an organic EL, and perform display according to the analog signal from the D / A converter 19. The digital signal that has been A / D converted by the A / D converter 23 and stored in the memory 32 is converted into an analog signal by the D / A converter 19, and the analog signal is sequentially transferred to and displayed on the display unit 28 or the EVF 29, thereby performing a live view display (LV). Hereinafter, an image displayed in live view display will be referred to as a live view image (LV image).

[0021] The system control unit 50 is a control unit made up of at least one processor and / or at least one circuit, and controls the entire digital camera 100. The system control unit 50 is both a processor and a circuit. The system control unit 50 executes programs recorded in non-volatile memory 56 to realize various processes described below. The system control unit 50 also performs display control by controlling the memory 32, D / A converter 19, display unit 28, EVF 29, etc.

[0022] The system memory 52 is, for example, a RAM, and the system control unit 50 loads constants and variables for the operation of the system control unit 50, programs read from the nonvolatile memory 56, and the like into the system memory 52.

[0023] The nonvolatile memory 56 is an electrically erasable and recordable memory, such as an EEPROM. Constants, programs, etc. for the operation of the system control unit 50 are recorded in the nonvolatile memory 56. The programs referred to here are programs for executing various flowcharts, which will be described later.

[0024] The system timer 53 is a timekeeping unit that measures the time used for various controls and the time of a built-in clock.

[0025] The communication unit 54 transmits and receives video signals and audio signals to and from external devices connected wirelessly or via a wired cable. The communication unit 54 can also be connected to a wireless LAN (Local Area Network) or the Internet. The communication unit 54 can also communicate with external devices via Bluetooth (registered trademark) or Bluetooth Low Energy. The communication unit 54 can transmit images (including LV images) captured by the imaging unit 22 and images recorded on the recording medium 200, and can receive image data and various other information from external devices.

[0026] The orientation detection unit 55 detects the orientation of the digital camera 100 with respect to the direction of gravity. Based on the orientation detected by the orientation detection unit 55, it is possible to determine whether an image captured by the imaging unit 22 was captured with the digital camera 100 held horizontally or vertically. The system control unit 50 can add orientation information corresponding to the orientation detected by the orientation detection unit 55 to the image file of the image captured by the imaging unit 22, or rotate and record the image. An acceleration sensor, a gyro sensor, or the like can be used as the orientation detection unit 55. The acceleration sensor or gyro sensor of the orientation detection unit 55 can also be used to detect movement of the digital camera 100 (panning, tilting, lifting, whether the digital camera 100 is stationary, etc.).

[0027] The tripod hole detection unit 51 detects the use of a tripod hole formed on the digital camera 100. The tripod hole detection unit 51 can also determine the type of accessory by communicating with the accessory that uses the tripod hole. The grip detection unit 58 detects whether the digital camera 100 is being held. For example, if a pressure sensor or electrostatic sensor is provided on the grip unit 90 or the thumb rest unit 91, these sensors can be used to detect whether the digital camera 100 is being held. It is also possible to detect whether the digital camera 100 is being held using an acceleration sensor or gyro sensor. The temperature measurement unit 59 measures the internal temperature of the digital camera 100.

[0028] The eyepiece detection unit 57 is an eyepiece detection sensor that detects (approach detection) whether an eye (object) approaches (eyepiece) or moves away (eyepiece) from the eyepiece unit 16 of the eyepiece finder 17 (hereinafter simply referred to as "finder"). The system control unit 50 switches the display unit 28 and the EVF 29 between on (display state) and off (non-display state) depending on the state detected by the eyepiece detection unit 57. More specifically, at least in the shooting standby state and when the display destination switching setting is automatic switching, when the eye is not in focus, the display is turned on as the display unit 28, and the EVF 29 is hidden. Furthermore, when the eye is in focus, the display is turned on as the display unit 28, and the EVF 29 is hidden. The eyepiece detection unit 57 can be, for example, an infrared proximity sensor, which can detect the approach of an object to the eyepiece 16 of the viewfinder 17 incorporating the EVF 29. When an object approaches, infrared light emitted from a light-emitting unit (not shown) of the eyepiece detection unit 57 is reflected by the object and received by a light-receiving unit (not shown) of the infrared proximity sensor. The amount of received infrared light can also be used to determine the distance the object is approaching the eyepiece 16 (eyepiece distance). In this way, the eyepiece detection unit 57 performs eyepiece detection, which detects the proximity of an object to the eyepiece 16. When an object is detected approaching within a predetermined distance from the eyepiece unit 16 from a non-eyepiece state (non-approaching state), it is detected that the eye has been placed in contact with the object. When an object that was detected as approaching from the eyepiece state (approaching state) moves away by more than a predetermined distance, it is detected that the eye has been removed. The threshold for detecting eye placement and the threshold for detecting eye removal may be different, for example, by providing hysteresis. Furthermore, after detecting eye placement, the eye placement state is maintained until eye removal is detected. After detecting eye removal, the eye placement state is maintained until eye placement is detected. Note that the infrared proximity sensor is just one example, and other sensors that can detect a state that can be considered as eye placement may be used for the eye placement detection unit 57.

[0029] Various camera settings such as shutter speed and aperture are displayed on the outside viewfinder display 43 via an outside viewfinder display drive circuit 44 .

[0030] The power supply control unit 80 is composed of a battery detection circuit, a DC-DC converter, a switch circuit for switching between powered blocks, etc., and detects whether a battery is installed, the type of battery, and the remaining battery power. The power supply control unit 80 also controls the DC-DC converter based on the detection results and instructions from the system control unit 50, and supplies the required voltage for the required period to each unit, including the recording medium 200. The power supply unit 30 is composed of primary batteries such as alkaline batteries or lithium batteries, secondary batteries such as NiCd batteries, NiMH batteries, or lithium-ion batteries, an AC adapter, etc.

[0031] The recording medium I / F 18 is an interface with a recording medium 200 such as a memory card or a hard disk. The recording medium 200 is a recording medium such as a memory card for recording captured images, and is composed of a semiconductor memory, a magnetic disk, or the like.

[0032] The operation unit 70 is an input unit that accepts operations from the user (user operations) and is used to input various operational instructions to the system control unit 50. As shown in Fig. 2, the operation unit 70 includes a mode selector switch 60, a shutter button 61, a power switch 72, a touch panel 70a, other operation members 70b, etc. The other operation members 70b include a main electronic dial 71, a sub electronic dial 73, a four-way key 74, a SET button 75, a video button 76, an AE lock button 77, a magnification button 78, a playback button 79, a menu button 81, etc.

[0033] The mode selector switch 60 switches the operating mode of the system control unit 50 to one of still image capture mode, video capture mode, playback mode, etc. Modes included in the still image capture mode include auto capture mode, auto scene determination mode, manual mode, aperture priority mode (Av mode), shutter speed priority mode (Tv mode), and program AE mode (P mode). There are also various scene modes and custom modes that provide capture settings for specific capture scenes. The mode selector switch 60 allows the user to directly switch to one of these modes. Alternatively, after first switching to a list screen of capture modes with the mode selector switch 60, the user may selectively switch to one of the displayed modes using another operating member. Similarly, the video capture mode may also include multiple modes.

[0034] The shutter button 61 includes a first shutter switch 62 and a second shutter switch 64. The first shutter switch 62 is turned on when the shutter button 61 is pressed halfway (a shooting preparation command) and generates a first shutter switch signal SW1. The system control unit 50 starts shooting preparation operations such as AF (autofocus) processing, AE (auto exposure) processing, AWB (auto white balance) processing, and EF (pre-flash) processing in response to the first shutter switch signal SW1. The second shutter switch 64 is turned on when the shutter button 61 is pressed fully (a shooting command) and generates a second shutter switch signal SW2. The system control unit 50 starts a series of shooting processing operations in response to the second shutter switch signal SW2, from reading out a signal from the imaging unit 22 to writing the captured image to the recording medium 200 as an image file.

[0035] The touch panel 70a is a touch sensor that detects various touch operations on the display surface of the display unit 28 (the operation surface of the touch panel 70a). The touch panel 70a and the display unit 28 can be configured as an integrated unit. For example, the touch panel 70a is configured so that its light transmittance does not interfere with the display of the display unit 28, and is attached to the upper layer of the display surface of the display unit 28. Input coordinates on the touch panel 70a are associated with display coordinates on the display surface of the display unit 28. This makes it possible to provide a GUI (Graphical User Interface) that allows the user to directly operate the screen displayed on the display unit 28.

[0036] (First embodiment) In the first embodiment, if the temperature of the digital camera 100 is higher than the threshold, it is safe to touch the digital camera 100. However, if the same part of the body is left touching the digital camera 100 for a long time, there is a possibility of suffering a low-temperature burn. Therefore, to warn against low-temperature burns, the digital camera 100 displays a warning display as shown in FIGS. 3(a) to 3(c). FIGS. 3(a) to 3(c) show screens on which a warning display is being displayed. In FIG. 3(a), an icon 301 is displayed as the warning display item. In FIG. 3(b), the icon 301 and a guidance message 302 that is larger than the icon 301 are displayed as the warning display items. The larger guidance message 302 displays an icon similar to the icon 301 and text that reads "Caution: Low-temperature burns." When the guidance message 302 is displayed, the icon 301 does not have to be displayed. In FIG. 3(c), a full-screen display is displayed as the warning display, and an icon and text similar to the large guidance message 302 are displayed, but larger than the large guidance message 302.

[0037] Because the icon 301 is smaller than the guidance 302 (the icon 301 has low saliency), a warning can be displayed without obstructing the live view image. Because the guidance 302 is large (the guidance 302 has high saliency), the user can easily notice the warning, but the guidance 302 may get in the way of the user. For example, the guidance 302 can make it difficult to confirm the subject (the live view image) (the guidance 302 interferes with shooting). The warning in FIG. 3(c) has the same advantages and disadvantages as the warning in FIG. 3(b). The warning in FIG. 3(c) makes it easier for the user to notice the warning than the warning in FIG. 3(b), but the live view image is entirely obscured, making it impossible to confirm the live view image. Therefore, in the first embodiment, the warning display is switched in consideration of the state of the digital camera 100.

[0038] Fig. 4 is a flowchart of the operation according to the first embodiment. The operation in Fig. 4 is realized by the system control unit 50 loading a program stored in the non-volatile memory 56 into the system memory 52 and executing it. For example, when a user operates the power switch 72 and the digital camera 100 starts up, the system control unit 50 starts the operation in Fig. 4. The operation in Fig. 4 is repeated while the digital camera 100 is running.

[0039] In S401, the system control unit 50 determines whether the temperature measured by the temperature measurement unit 59 is higher than a threshold value. The system control unit 50 repeatedly determines whether the temperature is higher than the threshold value until it determines that the temperature is higher than the threshold value. If it determines that the temperature is higher than the threshold value, the process proceeds to S402. The threshold value may be a predetermined fixed value or may be a value that can be changed by the user.

[0040] In S402, the system control unit 50 determines whether the state of the digital camera 100 is a specific state. The specific state is a state in which the digital camera 100 is not being held (a state in which the digital camera 100 is unlikely to be held). If it is determined that the state of the digital camera 100 is a specific state, the process proceeds to S403; otherwise, the process proceeds to S404.

[0041] The system control unit 50 can detect one or more of the following seven states ST1 to ST7 as the specific state: Note that it is not necessary to be able to detect all of the states ST1 to ST7. State ST1: Digital camera 100 is connected to a tripod State ST2: A gimbal is connected to the digital camera 100 State ST3: A grip is connected to the digital camera 100 State ST4: Digital camera 100 with a pan head connected State ST5: State in which the controller is connected to the digital camera 100 State ST6: State in which holding of the digital camera 100 is not detected State ST7: A specific operation mode is set in the digital camera 100

[0042] The tripod, gimbal, grip, and head are each connected to a tripod hole, and states ST1 to ST4 can be detected using a tripod hole detection unit 51. The controller communicates with (is connected to) a communication unit 54 via a wired or wireless connection, and state ST5 can be detected using the communication unit 54. State ST6 can be detected using a grip detection unit 58. The specific operation mode is an operation mode in which the digital camera 100 is not gripped (an operation mode in which the digital camera 100 is unlikely to be gripped), such as an operation mode for time-lapse photography or self-timer photography. The system control unit 50 knows the set operation mode and can detect state ST7.

[0043] In S403, the system control unit 50 causes the display unit 28 or the EVF 29 to display the warning display of Fig. 3(a) (warning display of only icon 301). In states ST1 to ST7, since it is unlikely that the user will hold the digital camera for a long period of time, the warning display of Fig. 3(a) is displayed, which makes it easier to check the live view image. Note that when the temperature of the digital camera 100 falls below the threshold, the icon 301 is hidden.

[0044] In S404, the system control unit 50 causes the display unit 28 or the EVF 29 to display the warning display of FIG. 3(b) (a warning display including the icon 301 and the guidance 302). If it is determined that the digital camera is not in one of states ST1 to ST7, the warning display of FIG. 3(b) is displayed to make it easy for the user to notice, since there is a possibility that the user will hold the digital camera for a long time. Note that when the temperature of the digital camera 100 falls below the threshold, the icon 301 and the guidance 302 are hidden. The guidance 302 can also be hidden in response to a user operation.

[0045] (Second embodiment) When the temperature of digital camera 100 is higher than the threshold, there is a possibility of low-temperature burns if the user places their eye next to the digital camera 100, even in a specific state where the digital camera 100 is not being held. Therefore, in the second embodiment, the warning display is given additional consideration as to whether or not the user has placed their eye next to the digital camera.

[0046] Fig. 5 is a flowchart of the operation according to the second embodiment. The operation in Fig. 5 is realized by the system control unit 50 loading a program stored in the non-volatile memory 56 into the system memory 52 and executing it. For example, when a user operates the power switch 72 and the digital camera 100 starts up, the system control unit 50 starts the operation in Fig. 5. The operation in Fig. 5 is repeated while the digital camera 100 is running.

[0047] Steps S501 to S504 are the same as steps S401 to S404 in Fig. 4 described in the first embodiment. After step S503, in step S505, the system control unit 50 uses the eyepiece detection unit 57 to determine whether the user has placed their eye on the eyepiece unit 16. If it is determined that the user has placed their eye on the eyepiece unit 16, the system control unit 50 proceeds to step S504; if not, the operation in Fig. 5 ends.

[0048] The order of the processes is not particularly limited. For example, the order of S503 and S505 may be reversed, so that if it is determined that the user has placed their eye on the eyepiece unit 16, the process proceeds from S505 to S504, and if not, the process proceeds from S505 to S503.

[0049] (Third embodiment) When the temperature of digital camera 100 is higher than the threshold value, even in a specific state where digital camera 100 is not being held, there is a possibility of low-temperature burns if the user is operating operation unit 70 (if the user is touching digital camera 100). Therefore, in the third embodiment, a warning display is displayed taking into further consideration whether or not the user is operating operation unit 70.

[0050] Fig. 6 is a flowchart of the operation according to the third embodiment. The operation shown in Fig. 6 is realized by the system control unit 50 loading a program stored in the non-volatile memory 56 into the system memory 52 and executing it. For example, when a user operates the power switch 72 and the digital camera 100 starts up, the system control unit 50 starts the operation shown in Fig. 6. The operation shown in Fig. 6 is repeated while the digital camera 100 is running.

[0051] S601 to S604 are the same as S401 to S404 in Fig. 4 described in the first embodiment. After S603, in S605, the system control unit 50 determines whether or not the user is operating the operation unit 70. If it is determined that the user is operating the operation unit 70, the process proceeds to S604; if not, the operation in Fig. 6 ends.

[0052] The order of the processes is not particularly limited. For example, the order of S603 and S605 may be reversed, and if it is determined that the user is operating the operation unit 70, the process may proceed from S605 to S604, and if not, the process may proceed from S605 to S603.

[0053] (Fourth embodiment) A warning cannot be displayed after the digital camera 100 is powered off. Therefore, it is preferable to make the user aware of the possibility of low-temperature burns while the digital camera 100 is powered on. Therefore, in the fourth embodiment, if the temperature of the digital camera 100 is higher than the threshold, the most prominent notification is displayed when the digital camera 100 is powered off. For example, the warning display shown in FIG. 3(c) is displayed.

[0054] 4, 5, or 6, if the temperature of the digital camera 100 is higher than a threshold value, the system control unit 50 determines whether to turn off the power of the digital camera 100. For example, the system control unit 50 determines to turn off the power of the digital camera 100 if the auto power off timer expires or if the power switch 72 is operated. If it is determined to turn off the power of the digital camera 100, the system control unit 50 3(c) is displayed. Note that the warning display will end when the temperature of the digital camera 100 falls below the threshold. The warning display can also be ended in response to a user operation.

[0055] (Fifth embodiment) In the fifth embodiment, it is assumed that an accessory connected to the digital camera 100 has a vibrator. For example, the accessory is a gimbal, a grip, or a controller, and the vibrator is an eccentric motor. In the first to fourth embodiments, notification is performed by displaying a warning. In the fifth embodiment, notification is performed by vibration of the accessory connected to the digital camera 100. The conspicuousness of the vibration (notification) varies depending on the vibration pattern. For example, the stronger the vibration, the more conspicuous the vibration (notification).

[0056] (Sixth embodiment) In the sixth embodiment, it is assumed that earphones or headphones are connected to the digital camera 100 via a wired or wireless connection. In the sixth embodiment, notification is made by audio output from the earphones or headphones connected to the digital camera 100. The saliency of the audio output (notification) varies depending on the audio output pattern. For example, the louder the volume, the higher the saliency of the audio output (notification). Also, the longer the duration of the audio output, the higher the saliency of the audio output (notification).

[0057] (Seventh embodiment) In the seventh embodiment, a notification (a notification other than a low-temperature burn notification) can be made regardless of whether the temperature of the digital camera 100 is higher than a threshold value. Hereinafter, notifications other than a low-temperature burn notification will be referred to as "other notifications." When the system control unit 50 detects a state requiring another notification, the system control unit 50 makes the other notification with a level of prominence that is independent of whether a specific state is detected. For example, a warning display such as an icon, guidance, an icon and guidance, or a full-screen display is made. Note that the method for detecting a state requiring another notification is not particularly limited. Furthermore, the prominence of the other notification may be a predetermined fixed level, or may be variable depending on the state of the digital camera 100.

[0058] According to the above-described embodiments, only when it is determined that there is a possibility of a low-temperature burn, a notification that is easier for the user to check is provided, and when there is a low possibility of a low-temperature burn, a notification that is easier for the user to check is provided using a live view image. Therefore, it is possible to provide a low-temperature burn notification without interfering with the user.

[0059] The various controls described above as being performed by the system control unit 50 may or may not be performed by a single piece of hardware (e.g., a processor or circuit). The entire device may be controlled by multiple pieces of hardware (e.g., multiple processors, multiple circuits, or a combination of one or more processors and one or more circuits) sharing the processing.

[0060] The above processor is a processor in the broad sense, and includes general-purpose processors and dedicated processors. General-purpose processors include, for example, CPUs (Central Processing Units), MPUs (Micro Processing Units), and DSPs (Digital Signal Processors). Dedicated processors include, for example, GPUs (Graphics Processing Units), ASICs (Application Specific Integrated Circuits), and PLDs (Programmable Logic Devices). Programmable logic devices include, for example, FPGAs (Field Programmable Gate Arrays) and CPLDs (Complex Programmable Logic Devices).

[0061] Although the embodiments of the present invention have been described in detail, the present invention is not limited to these specific embodiments, and various forms within the scope of the gist of the present invention are also included in the present invention. Furthermore, each of the above-described embodiments merely represents one embodiment of the present invention, and each embodiment can be combined as appropriate.

[0062] In the above-described embodiment, the present invention has been described as being applied to a digital camera, but the present invention is not limited to this example and can be applied to other electronic devices. Of course, the present invention can also be applied to a smartphone instead of a digital camera.

[0063] <Other embodiments> The present invention can also be realized by a process in which a program that realizes one or more functions of the above-described embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in the computer of the system or device read and execute the program, or by a circuit that realizes one or more functions.

[0064] The disclosure of this embodiment includes the following configuration, method, program, and medium. (Configuration 1) An electronic device, a measuring means for measuring the temperature of the electronic device; a detection means for detecting a specific state in which the electronic device is not gripped; a control means for controlling the electronic device to issue a first notification if the specific state is detected when the temperature of the electronic device is higher than a threshold value, and to issue a second notification that is more noticeable than the first notification if the specific state is not detected; An electronic device comprising: (Configuration 2) The specific state is A tripod is connected to the electronic device. A state in which a gimbal is connected to the electronic device; a state in which a grip is connected to the electronic device; A state in which a pan head is connected to the electronic device; A state in which a controller is connected to the electronic device; A state in which the grip of the electronic device is not detected; and A state in which a specific operating mode is set in the electronic device Contains at least one state of 2. The electronic device according to configuration 1. (Configuration 3) When the temperature of the electronic device is higher than the threshold, even if the specific state is detected, if eye contact with the electronic device is detected, the control means performs control to issue the second notification. 3. The electronic device according to configuration 1 or 2. (Configuration 4) When the temperature of the electronic device is higher than the threshold, even if the specific state is detected, if an operation member provided on the electronic device is being operated, the control means performs control to issue the second notification. 4. The electronic device according to any one of configurations 1 to 3. (Configuration 5) When the temperature of the electronic device is higher than a threshold value, the control means controls the electronic device to issue a third notification that is more noticeable than the second notification when the electronic device is turned off. 5. The electronic device according to any one of configurations 1 to 4. (Configuration 6) The third notification is displayed in full screen. 6. The electronic device according to configuration 5. (Configuration 7) the first notification is made by displaying a first item; The second notification is made by displaying a second item that is larger than the first item. 7. The electronic device according to any one of configurations 1 to 6. (Configuration 8) The first notification and the second notification are each made by vibration of an accessory connected to the electronic device. 7. The electronic device according to any one of configurations 1 to 6. (Configuration 9) The accessory is a gimbal, a grip, or a controller. 9. The electronic device according to configuration 8. (Configuration 10) The first notification and the second notification are each made by audio output from earphones or headphones connected to the electronic device. 7. The electronic device according to any one of configurations 1 to 6. (Configuration 11) The control means controls the notification to be made with a prominence that is independent of whether the temperature of the electronic device is higher than a threshold value or not, and that is independent of whether the specific state is detected or not. 11. The electronic device according to any one of configurations 1 to 10. (method) A method for controlling an electronic device, comprising: a measuring step of measuring a temperature of the electronic device; a detecting step of detecting a specific state in which the electronic device is not gripped; a control step of performing control so that a first notification is made if the specific state is detected when the temperature of the electronic device is higher than a threshold value, and performing control so that a second notification that is more noticeable than the first notification is made if the specific state is not detected; A control method comprising: (program) 12. A program for causing a computer to function as each means of the electronic device according to any one of configurations 1 to 11. (medium) 12. A computer-readable storage medium storing a program for causing a computer to function as each of the means of the electronic device according to any one of configurations 1 to 11. [Explanation of symbols]

[0065] 100: Digital camera 50: System control unit

Claims

1. An electronic device, a measuring means for measuring the temperature of the electronic device; a detection means for detecting a specific state in which the electronic device is not gripped; a control means for controlling the electronic device to issue a first notification if the specific state is detected when the temperature of the electronic device is higher than a threshold value, and to issue a second notification that is more noticeable than the first notification if the specific state is not detected; An electronic device comprising:

2. The specific state is A tripod is connected to the electronic device. A state in which a gimbal is connected to the electronic device; a state in which a grip is connected to the electronic device; A state in which a pan head is connected to the electronic device; A state in which a controller is connected to the electronic device; A state in which the grip of the electronic device is not detected; and A state in which a specific operating mode is set in the electronic device includes at least one state of 2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

3. When the temperature of the electronic device is higher than the threshold value, even if the specific state is detected, if eye contact with the electronic device is detected, the control means performs control to perform the second notification.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

4. When the temperature of the electronic device is higher than the threshold value, even if the specific state is detected, if an operation member provided on the electronic device is being operated, the control means performs control to issue the second notification.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

5. When the temperature of the electronic device is higher than a threshold value, the control means controls the electronic device to issue a third notification that is more noticeable than the second notification when the electronic device is turned off.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

6. The third notification is displayed in full screen.

6. The electronic device according to claim 5,

7. the first notification is made by displaying a first item; The second notification is made by displaying a second item that is larger than the first item.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

8. The first notification and the second notification are each performed by vibration of an accessory connected to the electronic device.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

9. The accessory is a gimbal, a grip, or a controller.

9. The electronic device according to claim 8.

10. The first notification and the second notification are each performed by audio output from earphones or headphones connected to the electronic device.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

11. The control means controls the notification to be made with a prominence that is independent of whether the temperature of the electronic device is higher than a threshold value or not, and that is independent of whether the specific state is detected or not.

2. The electronic device according to claim 1, wherein the electronic device is a semiconductor device.

12. A method for controlling an electronic device, comprising: a measuring step of measuring a temperature of the electronic device; a detecting step of detecting a specific state in which the electronic device is not gripped; a control step of performing control so that a first notification is made if the specific state is detected when the temperature of the electronic device is higher than a threshold value, and performing control so that a second notification that is more noticeable than the first notification is made if the specific state is not detected; A control method comprising:

13. A program for causing a computer to function as each of the means of the electronic device according to any one of claims 1 to 11.

14. A computer-readable storage medium storing a program for causing a computer to function as each of the means of the electronic device according to any one of claims 1 to 11.

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