JP2024034808A - Imaging device and its control method, display control device, program - Google Patents

Abstract

An object of the present invention is to start up a display device using a method suitable for user operation. A system control unit 101 of a digital camera 100 identifies an activation factor when activating a display device 150 including a touch panel 127, and determines whether the display device 150 is activated more than the touch panel 127 according to the identified activation factor. A display priority startup sequence that prioritizes lighting and a standard startup sequence that has a small discrepancy between the timing at which lighting of the display device 150 is completed and the timing at which the touch panel 127 becomes operable are switched. [Selection diagram] Figure 3

Description

The present invention relates to an imaging device, a control method thereof, a display control device, and a program, and particularly relates to startup processing of a display device.

In an electronic device having a display device such as a liquid crystal panel, there are multiple factors for activating the display device. For example, Patent Document 1 discloses, regarding the activation factor of a display device in a mobile information device, a technology that branches applications and displays to be launched after returning from a sleep state, depending on the member operated by the user when returning from a sleep state. There is.

JP2013-214863A

In recent years, there has been a strong demand for faster startup of imaging devices such as digital cameras, which are an example of electronic devices equipped with display devices. Here, since lighting of the display device is one of the factors when starting up the imaging device, in order to realize faster startup of the imaging device, it is necessary to realize faster lighting of the display device.

To address this problem, in Patent Document 1, the user's operability is improved by switching the application and display to be launched after returning from sleep according to the user's operation for returning from sleep. However, Patent Document 1 does not consider branching or speeding up the return process itself.

Furthermore, display devices for imaging devices are widely used with in-cell structures in which touch panels are arranged in an overlapping arrangement, and with such display devices, it is difficult to speed up both the lighting of the display device and the activation of the touch panel. be.

Here, by delaying the start of activation of the touch panel, it is possible to speed up the lighting of the display device. However, if processing to speed up the lighting of the display device is executed preferentially in all situations, if the user performs a touch operation immediately after the display device turns on, even if the display device is turned on, However, the touch panel may not respond. A user who encounters such a situation may suffer the disadvantage of not being able to perform a desired operation, and may also mistakenly believe that the touch panel has malfunctioned.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique for activating a display device in a method suitable for user operations.

An imaging device according to the present invention includes a display device including a touch panel, an identification means for identifying a startup factor when starting the display device, and a method for turning on the display device rather than activating the touch panel according to the startup factor. and a control means for switching between a first sequence that gives priority to the above, and a second sequence that has a small discrepancy between the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operational. .

Advantageous Effects of Invention According to the present invention, it is possible to start up a display device using a method suitable for user operation.

FIG. 1 is a block diagram showing a schematic configuration of a digital camera according to an embodiment. FIG. 3 is a rear view of the digital camera. It is a flow chart explaining startup processing of a display device in a 1st embodiment. It is a flowchart of each process of S304 and S305. It is a flowchart of the process of S404 (S415). FIG. 3 is a diagram showing the relationship between ambient environmental temperature and display stabilization waiting time. It is a diagram comparing the processing time of each step in each sequence of S304 and S305. It is a flowchart explaining startup processing of a display device in a 2nd embodiment. 13 is a flowchart illustrating startup processing of a display device in a third embodiment. 12 is a flowchart showing another example of the process of S404.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Here, a digital camera will be taken up as an example of an imaging device according to the present invention.

<First embodiment>
FIG. 1 is a block diagram showing a schematic configuration of a digital camera 100 according to an embodiment. Note that the block configuration of the digital camera 100 shown in FIG. 1 is common to second to fourth embodiments, which will be described later.

The digital camera 100 includes a barrier 103, a photographic lens 104, a shutter 105, an imaging section 106, an A/D converter 107, a system control section 101, an image processing section 102, a memory control section 108, a memory 109, and a D/A converter 110. and a display device 150. The display device 150 includes a liquid crystal display section 111 (liquid crystal panel), a touch panel 127, and a backlight 131.

The digital camera 100 also includes an eye proximity detection section 129, an electronic viewfinder 128, a nonvolatile memory 114, a system memory 112, a system timer 113, a shutter button 115, a mode switching dial 118, a power button 119, and an operation member 120. The shutter button 115 (release button) has a first shutter switch 116 and a second shutter switch 117. The digital camera 100 further includes a power supply section 122, a power supply control section 121, a storage medium I/F 123, a storage medium 124, an audio control section 125, a speaker 126, and a temperature sensor 130.

The barrier 103 protects the imaging system including the imaging lens 104, the shutter 105, and the imaging unit 106 from dirt and damage by covering the imaging system including the imaging lens 104. The photographing lens 104 is composed of a plurality of lenses including a zoom lens and a focus lens. The shutter 105 has an aperture function and adjusts the amount of exposure to the imaging unit 106. The imaging unit 106 is an imaging device such as a CCD sensor or a CMOS sensor, and converts an optical image into an analog electrical signal and outputs it to the A/D converter 107. The A/D converter 107 converts the analog electrical signal sent from the imaging unit 106 into a digital image signal (hereinafter referred to as “image signal”), and sends the generated image signal to the memory control unit 108 and image processing unit 102. Send.

The image processing unit 102 performs predetermined processing such as pixel interpolation, resizing processing such as reduction, and color conversion processing on the image signal sent from the A/D converter 107 and the image data sent from the memory control unit 108. performs image processing. The image processing unit 102 also performs predetermined calculation processing using the image signal sent from the A/D converter 107, and the system control unit 101 performs exposure control and distance measurement control based on the obtained calculation results. I do. As a result, TTL-based AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing are performed. The image processing unit 102 further performs predetermined calculation processing using the image signal, and performs TTL-based AWB (auto white balance) processing based on the obtained calculation result.

The image signal output from the A/D converter 107 is written into the memory 109 via the image processing section 102 and the memory control section 108 or via the memory control section 108. The memory control unit 108 controls writing and reading of various data to and from the memory 109. The memory 109 stores image signals output from the A/D converter 107, image data obtained by performing predetermined image processing on the image signals, image data to be displayed on the display device 150 (display image data), and the like. . The memory 109 has a storage capacity sufficient to store a predetermined number of still image data, a predetermined period of moving image data, and audio data, and also serves as an image display memory (video memory).

The D/A converter 110 converts the display image data stored in the memory 109 into an analog signal and supplies it to the display device 150. Thereby, the display image data is converted into an image and displayed on the display device 150 via the D/A converter 110. The display device 150 has a structure in which a touch panel 127 is superimposed on the surface of a liquid crystal display section 111, and a backlight 131 is provided at the bottom of the liquid crystal panel. The liquid crystal display section 111 displays an image according to the analog signal transmitted from the D/A converter 110, and the displayed image becomes visible when the backlight 131 is turned on. The image data output from the A/D converter 107 and stored in the memory 109 is converted into an analog signal by the D/A converter 110, and sequentially transferred to the display device 150 for display, thereby performing through image display. be able to. The system control unit 101 detects various touch operations on the touch panel 127. Note that the touch detection method on the touch panel 127 is not particularly limited.

The eye proximity detection unit 129 is arranged near the electronic viewfinder 128 and detects the approach and departure of an object (generally the eyes (face) of the photographer (user)) from the electronic viewfinder 128. For example, an infrared sensor is used for the eye proximity detection section 129. The system control unit 101 switches the display destination between the display device 150 and the electronic viewfinder 128 using detection of proximity/separation of an object by the eye proximity detection unit 129 as a trigger. Note that the electronic viewfinder 128 can display the through image by performing the same process as the process for displaying the through image on the display device 150.

The non-volatile memory 114 is a storage means that can be electrically erased and stored, and for example, an EEPROM or the like is used. The nonvolatile memory 114 stores constants, programs, etc. for operation of the system control unit 101. Note that the program here refers to a program for executing various flowcharts described later.

The system control unit 101 performs overall control of the digital camera 100. The system control unit 101 executes a program recorded in the nonvolatile memory 114 to comprehensively control the operations of each unit that constitutes the digital camera 100, thereby performing various processes shown in various flowcharts described below. make it happen.

System memory 112 is specifically a RAM. In the system memory 112, constants and variables for the operation of the system control unit 101, programs read from the nonvolatile memory 114, and the like are expanded. The system control unit 101 performs display control by controlling the system memory 112, the D/A converter 110, the display device 150, and the like. The system timer 113 measures the time used for various controls and the time of a built-in clock.

The shutter button 115, mode switching dial 118, power button 119, and operation member 120 are operation means for inputting various operation instructions to the system control unit 101. Note that the operation means also includes a touch panel 127.

The first shutter switch 116 is turned on during the operation of the shutter button 115 (so-called half-press (imaging preparation instruction)), thereby generating the first shutter signal SW1. Upon receiving the first shutter signal SW1, the system control unit 101 starts photographing preparation operations such as AF processing, AE processing, AWB processing, and EF processing. The second shutter switch 117 is turned on when the operation of the shutter button 115 is completed (so-called full press (photographing instruction)), thereby generating the second shutter signal SW2. Upon receiving the second shutter signal SW2, the system control unit 101 executes a series of photographing processing operations from reading out the signal from the imaging unit 106 to writing image data to the storage medium 124.

The mode switching dial 118 switches the operating mode of the system control unit 101. Note that the operation modes include a still image recording mode, a moving image recording mode, a playback mode, and a detailed mode included in these operation modes. The power button 119 turns on/off the power of the digital camera 100. A specific example of the operating member 120 will be described later with reference to FIG. 2.

The power supply unit 122 is a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li battery, an AC adapter, or the like. The power supply control unit 121 includes a battery detection circuit, a DC-DC converter, a switch circuit for switching the block to be energized, etc., and controls the state of the power button 119, the state of the power supply unit 122 (the presence or absence of a battery, the type of battery, the remaining battery level). etc.). Further, the power supply control unit 121 controls the DC-DC converter based on the detection results around the power supply and the instructions from the system control unit 101, and supplies the necessary voltage to each unit including the storage medium 124 for a necessary period.

The storage medium I/F 123 is an interface that enables communication between the storage medium 124 and the system control unit 101 and the like. The storage medium 124 is, for example, a memory card that is removably attached to the housing of the digital camera 100, and stores image data and the like. Note that the storage medium 124 is not limited to a memory card, but may be a hard disk, a magnetic disk, or the like, and may be built into the housing of the digital camera 100 in a non-removable manner.

The audio control unit 125 generates a sound (warning sound) for notifying the user of a warning or the like, and outputs it to the speaker 126. The user is required to take a predetermined response to the warning sound emitted from the speaker 126. The temperature sensor 130 measures the ambient temperature of the digital camera 100 (the temperature of the outside air).

FIG. 2 is a rear view of the digital camera 100. A shutter button 115, a mode switching dial 118, and a power button 119 are provided on the top surface of the digital camera 100. Although not shown, the bottom of the digital camera 100 is provided with a cover that is opened and closed when the battery, which is an example of the power supply section 122, and the storage medium 124 are inserted into and removed from the digital camera 100. On the back of the digital camera 100, a display device 150 (liquid crystal display section 111, touch panel 127), an electronic viewfinder 128, an eyepiece detection section 129, a cross button 202 as an operation member 120, a SET button 203, and a menu button 204 are provided. ing.

The shutter button 115, mode switching dial 118, power button 119, display device 150 (liquid crystal display section 111, touch panel 127), electronic viewfinder 128, and eyepiece detection section 129 have already been explained with reference to FIG. The explanation here will be omitted.

The cross button 202 and the SET button 203 are used to select and determine various function icons displayed on the display device 150 or the electronic viewfinder 128, and predetermined functions are assigned to each scene. The cross button 202 and the SET button 203 function as, for example, an end button, a return button, an image forwarding button, a jump button, a narrowing down button, an attribute change button, and the like. When the menu button 204 is pressed, a menu screen for performing various settings of the digital camera 100 is displayed on the display device 150 or the electronic viewfinder 128. The user can intuitively make various settings on the display device 150 using the menu screen displayed on the electronic viewfinder 128 and the cross button 202 and SET button 203, which have buttons in four directions (up, down, left, and right). .

Next, the startup process of the display device 150 will be explained. In the following description, "lighting up the display device 150" refers to starting up the liquid crystal display unit 111 and lighting up the backlight 131, in other words, enabling the display image on the display device 150 to be viewed. shall refer to that. Furthermore, "starting the display device 150" refers to "turning on the display device 150" and "starting the touch panel 127." Activation of the touch panel 127 refers to putting the touch panel 127 into a state where it can accept touch operations on the touch panel 127.

FIG. 3 is a flowchart illustrating the startup process of the display device 150 in the first embodiment. In each process (step) indicated by an S number in this flowchart, the system control unit 101 loads a predetermined program stored in the nonvolatile memory 114 into the system memory 112, and controls the operation of each part of the digital camera 100 in an integrated manner. This is achieved by controlling the

When the power button 119 is operated with the power off, or the shutter button 115 is pressed with the auto power off, etc., and the process of starting up the digital camera 100 is executed, the display is displayed accordingly. A startup process for the device 150 is executed.

In S301, the system control unit 101 identifies the cause of activation of the digital camera 100. In this embodiment, the activation factor of the digital camera 100 can be substantially regarded as the activation factor of the display device 150. In step S<b>302 , the system control unit 101 determines whether the activation factor of the digital camera 100 is power-on of the digital camera 100 by operating the power button 119 . If the system control unit 101 determines that the power is not turned on by operating the power button 119 (No in S302), it executes the process of S303, and if it determines that the power is turned on by operating the power button 119 (No in S302). Yes), the process of S304 is executed.

In S<b>303 , the system control unit 101 determines whether the activation factor of the digital camera 100 is to turn on the power of the digital camera 100 by operating the shutter button 115 . If the system control unit 101 determines that the power is turned on by operating the shutter button 115 (Yes in S303), it executes the process in S304, and if it determines that the power is not turned on by operating the shutter button 115 (No in S303). ), the process of S305 is executed.

In S304, the system control unit 101 executes a display priority activation sequence (first sequence) for the display device 150, and ends this processing. Note that the display priority activation sequence in S304 is a sequence that prioritizes lighting of the display device 150 over activation of the touch panel 127, and details of the process will be described later with reference to FIG. 4(a).

In S305, the system control unit 101 executes a standard startup sequence (second sequence) for the liquid crystal display unit 111, and ends this process. Note that the standard activation sequence of S305 is a sequence in which the difference between the timing at which lighting of the display device 150 is completed and the timing at which activation of the touch panel 127 is completed is small. Details of the standard startup sequence will be described later with reference to FIG. 4(b). Note that when the processes of S304 and S305 are completed, the backlight 131 is turned on, the image displayed on the liquid crystal display section 111 can be viewed, and touch operations on the touch panel 127 are enabled.

The reason for performing such control is as follows. That is, when the activation factor of the digital camera 100 is a power-on operation by pressing the power button 119 and pressing the shutter button 115, it is expected that the user will start shooting immediately after the digital camera 100 is activated. Therefore, it is considered desirable that the image be displayed quickly on the display device 150, and therefore the process of S304 is executed. On the other hand, if the activation factor of the digital camera 100 is a press of another operating member (for example, the menu button 204), there is a high possibility that the user will perform a touch operation on the touch panel 127 after the display device 150 is activated. Therefore, it is considered desirable that the discrepancy between the timing at which the display device 150 completes lighting and an image is displayed and the timing at which the touch panel 127 completes startup and becomes capable of accepting touch operations is small. processing is executed.

Next, each process of S304 and S305 will be explained in detail. FIG. 4(a) is a flowchart showing details of the process in S304. In S401, the system control unit 101 turns on the power to the liquid crystal display unit 111. In S402, the system control unit 101 turns on the touch panel 127. As a result, initialization of the liquid crystal display section 111 and the touch panel 127 is started.

In S403, the system control unit 101 waits until the initialization of the liquid crystal display unit 111 is completed. When the initialization of the liquid crystal display unit 111 is completed, the system control unit 101 performs lighting processing of the backlight 131 in S404. This allows the user to visually recognize the image displayed on the display device 150 (liquid crystal display section 111). Note that details of the process in S404 will be described later.

In S405, the system control unit 101 waits until initialization of the touch panel 127 is completed. Touch operations on the touch panel 127 are disabled until initialization of the touch panel 127 is completed.

In S406, the system control unit 101 waits until the touch panel 127 starts operating. When the process of S406 is completed and the touch panel 127 starts operating, touch operations on the touch panel 127 can be effectively accepted. In S407, the system control unit 101 waits until a signal is input from the touch panel 127, and this flow ends. Note that when the system control unit 101 detects a signal input from the touch panel 127, it executes processing according to the input signal.

FIG. 4(b) is a flowchart showing details of the process in S305. The processing in S411 to S413 is the same as the processing in S401 to S403 in the flowchart of FIG. 4(a), so the description thereof will be omitted here. In S414, the system control unit 101 waits until initialization of the touch panel 127 is completed. In S415, the system control unit 101 performs lighting processing for the backlight 131. The processes in S414 and S415 are the same as the processes in S405 and S404 in the flowchart of FIG. 4(a), respectively. That is, in the process of S304 and the process of S305, the order of the process of turning on the backlight 131 and the process of waiting for the completion of initialization of the touch panel 127 is reversed, and the effect thereof will be described later. The processing in S416 and S417 is the same as the processing in S406 to S407 in the flowchart of FIG. 4(a), so the description thereof will be omitted here.

Next, S404 and S415, which are equivalent processing contents, will be explained. FIG. 5 is a flowchart of the process of S404 (S415). In step S<b>501 , the system control unit 101 obtains the ambient temperature of the digital camera 100 using the temperature sensor 130 .

In S502, the system control unit 101 obtains the display stabilization wait time of the liquid crystal display unit 111 corresponding to the ambient environmental temperature obtained in S501. Waiting for stabilization refers to waiting for the time required for the image displayed on the screen to stabilize after the liquid crystal display unit 111 is powered on. The display stabilization waiting time is determined based on a table showing the relationship with the surrounding environment temperature, and an example of the table is shown in FIG. Note that the "display stabilization wait flag" in FIG. 6 is used in the fourth embodiment, which will be described later, and is not used in the first embodiment. As can be seen from FIG. 6, the lower the ambient temperature of the digital camera 100, the longer it takes for the display to become stable. For example, when the ambient environment temperature is 28° C., the display stabilization wait time is 30 msec.

In S503, the system control unit 101 waits for the display stabilization waiting time acquired in S502. In S504, when the display stabilization waiting time has elapsed, the system control unit 101 turns on the backlight 131 and ends this flow.

FIG. 7 is a diagram comparing the processing times of each step in each sequence of S304 and S305. In other words, FIG. 7 is a schematic diagram illustrating the effect obtained by reversing the order of the backlight 131 lighting process and the process of waiting for the completion of initialization of the touch panel 127 in S304 and S305. FIG. 7 shows the timing of the processing of S401 to S406 of S304 and the processing of S411 to S417 of S305, and the time required for each processing.

Comparing the timing at which lighting of the backlight 131 is completed (at the end of S504) in S304 and S305, it can be seen that S304 is faster. This indicates that the timing at which the image displayed on the display device 150 becomes visible is earlier in S304 than in S305.

On the other hand, when comparing the time from the completion of lighting of the backlight 131 to the start of operation of the touch panel 127 in S304 and S305 (the time from the end of S504 to the end of S406 and the time from the end of S504 to the end of S416), S305 You can see that it is shorter. This indicates that the difference between the timing at which the display device 150 completes lighting and the timing at which the touch panel 127 becomes operable is smaller in S305 than in S304.

As described above, in the first embodiment, the startup sequence of the display device 150 is switched between S304 and S305 depending on the startup factor of the digital camera 100. In S304, the lighting process of the backlight 131 is given priority over waiting for the initialization of the touch panel 127 to be completed. In other words, the lighting process of the display device 150 (the process of making the image displayed on the display device 150 visible) is sped up. This speeds up the startup of the digital camera 100, allowing the user to quickly capture an image after starting the digital camera 100.

On the other hand, in S305, priority is given to reducing the discrepancy between the timing at which the display device 150 completes lighting and the timing at which the touch panel 127 becomes operable. Thereby, a reaction can be generated quickly to a touch operation on the touch panel 127 after the display device 150 is turned on, and thus usability can be improved.

<Second embodiment>
In the first embodiment, the display priority activation sequence (S304) is executed when the activation factor of the display device 150 (digital camera 100) is the pressing of the power button 119 or the pressing of the shutter button 115, and in other cases, the standard activation The sequence (S305) was executed. On the other hand, in the second embodiment, a display priority mode (first mode) in which a display priority startup sequence is executed in response to a startup factor of the display device 150 by an operation on a menu screen, and a standard mode in which a standard startup sequence is executed. mode (second mode).

The user presses the menu button 204 in advance to display a setting menu on the display device 150, and arbitrarily assigns the display priority mode and standard mode to the start factor from the setting menu. The assignment method may be a well-known method such as operating a screen on which predetermined activation factors are listed and an icon for selecting display priority mode or standard mode for each activation factor, so detailed information may be used. Further explanation will be omitted. The allocation result is stored in the nonvolatile memory 114 as startup setting information for the display device 150.

FIG. 8 is a flowchart illustrating startup processing of the display device 150 in the second embodiment. In each process (step) indicated by an S number in this flowchart, the system control unit 101 loads a predetermined program stored in the nonvolatile memory 114 into the system memory 112, and controls the operation of each part of the digital camera 100 in an integrated manner. This is achieved by controlling the

When the digital camera 100 is started, the system control unit 101 identifies the activation factor of the digital camera 100 (the activation factor of the display device 150) in S801. In step S802, the system control unit 101 refers to the startup setting information of the display device 150 and reads the settings for the startup factor identified in step S801.

In S803, the system control unit 101 determines whether the setting read in S802 is the display priority mode. If the system control unit 101 determines that it is the display priority mode (Yes in S803), it executes the process of S804, and if it determines that the display priority mode is not the display priority mode (standard mode) (No in S803), it executes the process in S805. Execute the process.

In S804, the system control unit 101 executes a display priority startup sequence, and then ends this process. On the other hand, in S805, the system control unit 101 executes a standard startup sequence, and then ends this process. Note that since the process in S804 is the same as the process in S304, and the process in S805 is the same as the process in S305, a detailed explanation of each process in S804 and S805 will be omitted. In this way, in the second embodiment, it is possible to start up the display device 150 according to the user's request.

<Third embodiment>
In the third embodiment, a description will be given of activation control of the display device 150 when the display destination is switched from the electronic viewfinder 128 to the display device 150 using the detection of eye separation by the eye proximity detection unit 129 as the activation factor.

FIG. 9 is a flowchart illustrating the startup process of the display device 150 in the third embodiment. When the eye proximity detection unit 129 detects eye separation, the system control unit 101 receives an eye separation detection signal from the eye proximity detection unit 129 in S901. In S902, the system control unit 101 executes a sequence for turning off the electronic viewfinder 128, thereby turning off the electronic viewfinder 128.

In S903, the system control unit 101 determines whether the eye release in S901 was performed while the shutter button 115 was pressed. If the system control unit 101 determines that the shutter button 115 is in a pressed state (Yes in S903), it executes the process in S904, and if it determines that the shutter button 115 is not in a pressed state (S903: Yes), the system control unit 101 executes the process in S904. No), execute the process of S905.

In S904, the system control unit 101 executes a display priority startup sequence, and then ends this process. On the other hand, in S905, the system control unit 101 executes a standard startup sequence, and then ends this process. Note that since the process in S904 is the same as the process in S304, and the process in S905 is the same as the process in S305, a detailed explanation of each process in S904 and S905 will be omitted.

Thus, in the third embodiment, it is expected that when the user takes his or her eyes off the electronic viewfinder 128 while the shutter button 115 is pressed, that is, after the user's eyes have taken their eyes off the electronic viewfinder 128, photography will continue. In this case, the display priority activation sequence is executed. This makes it possible to enter the shooting state earlier than when executing the standard startup sequence.

<Fourth embodiment>
In the first to third embodiments, in the backlight lighting process (S404) in the display priority activation sequence (S304, S804, S904), the backlight 131 is always turned on after the display of the liquid crystal display unit 111 has stabilized. Yes (S504). On the other hand, in the fourth embodiment, whether or not it is necessary to wait for the display stabilization of the liquid crystal display unit 111 is determined based on the flag.

FIG. 10 is a flowchart showing another example of the process of S404. In step S<b>1001 , the system control unit 101 obtains the ambient temperature of the digital camera 100 using the temperature sensor 130 .

In S1002, the system control unit 101 obtains the display stabilization wait flag of the liquid crystal display unit 111 corresponding to the ambient environmental temperature obtained in S1001. The relationship between the ambient environment temperature and the display stabilization wait flag is shown in FIG. 'TRUE' of the display stabilization wait flag indicates 'display stabilization wait time is present', and 'FALSE' indicates 'display stabilization wait time is not present'. The lower the ambient temperature of the digital camera 100 is, the longer it takes for the image display to become stable on the liquid crystal display section 111. Therefore, if the waiting time is eliminated when the temperature is low, an unstable display may be visible to the user, and the quality of the digital camera 100 as a product deteriorates. Therefore, when the surrounding environment temperature is low, the display stabilization wait flag is set to TRUE, and the display stabilization wait is performed.

In S1003, the system control unit 101 determines whether the acquired display stabilization wait flag is FALSE. If the system control unit 101 determines that the display stabilization wait flag is FALSE (Yes in S1003), it executes the process in S1006, and if it determines that the display stabilization wait flag is not FALSE (No in S1003). , executes the process of S1004. Note that the case where the display stabilization wait flag is not FALSE necessarily means the case where the display stabilization wait flag is TRUE.

In S1004, the system control unit 101 obtains the display stabilization wait time of the liquid crystal display unit 111 corresponding to the ambient environmental temperature obtained in S1001 from the table of FIG. In S1005, the system control unit 101 waits for the display stabilization waiting time acquired in S1004, and then executes the process in S1006. In S1006, the system control unit 101 turns on the backlight 131, and ends this flow.

This makes it possible to further shorten the time required to light up the display device 150 in the display priority activation sequence. Note that the reason why the process in the flowchart of FIG. 10 is not applied to the standard startup sequence is to avoid increasing the discrepancy between the timing at which the display device 150 lights up and the timing at which the touch panel 127 becomes operational.

Although the present invention has been described above in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and the present invention may take various forms without departing from the gist of the present invention. included. Further, each of the embodiments described above is merely one embodiment of the present invention, and each embodiment can be combined as appropriate.

For example, in the embodiment described above, the present invention has been described as applied to the digital camera 100, but the present invention can be applied to an electronic device that has an imaging function and a display device. For example, the present invention can be applied to mobile communication terminals with a camera function (mobile phones, smart phones, etc.), portable computers with a camera function (tablet terminals), portable game machines with a camera function, and the like.

The present invention provides a system or device with a program that implements one or more functions of the embodiments described above via a network or a storage medium, and one or more processors in a computer of the system or device reads and executes the program. This can also be achieved by processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

Furthermore, the disclosure of this embodiment includes the following configuration and method.
(Structure 1) A display device including a touch panel, an identification means for identifying a activation factor when activating the display device, and an identification device that prioritizes lighting of the display device over activation of the touch panel according to the activation factor. An imaging device comprising: a control means for switching between the first sequence and a second sequence in which the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operational is small.
(Configuration 2) The control means executes the first sequence when the activation factor is powering on the imaging device by operating a power button or a photographing preparation operation by operating a shutter button, and The imaging apparatus according to configuration 1, wherein the second sequence is executed when the operation is another operation.
(Structure 3) An electronic viewfinder; and notification means for notifying the control means to switch the display destination of a predetermined image from the electronic viewfinder to the display device, and the control means is configured to notify the control means when the shutter button is pressed. If the notification is received while the shutter button is not pressed, the first sequence is executed, and if the notification is received while the shutter button is not pressed, the second sequence is executed. The imaging device according to configuration 1.
(Structure 4) It is characterized by comprising a detection means for detecting eye contact and eye separation of the user with respect to the electronic viewfinder, and wherein the notification means notifies the control means of the notification when the eye separation is detected. The imaging device according to configuration 3.
(Structure 5) A display device including a touch panel, an operation member that causes the display device to display a menu screen, and a first sequence that prioritizes lighting of the display device over activation of the touch panel via the menu screen. A first mode to be executed and a second mode to execute a second sequence in which the timing at which the display device lights up and the timing at which the touch panel becomes operational are small, and a plurality of modes in which the display device is activated. a setting means for setting each of the starting factors, an identifying means for identifying the starting factor when starting the display device, and a mode set by the setting means for the starting factor identified by the identifying means. An imaging device comprising: control means for activating the display device.
(Structure 6) The display device includes a liquid crystal display section and a backlight, and includes a temperature sensor that measures the ambient temperature of the imaging device, and a display stabilization wait time of the liquid crystal display section that is adjusted according to the ambient temperature. storage means for storing the stored information, and when executing the first sequence, the control means waits for the elapse of the display stabilization waiting time according to the ambient environmental temperature detected by the temperature sensor. , The imaging device according to any one of configurations 1 to 5, wherein the backlight is turned on.
(Configuration 7) The display device has a liquid crystal display section and a backlight, and includes a temperature sensor that measures the ambient temperature of the imaging device, and turns on the backlight after waiting for the display of the liquid crystal display section to stabilize. storage means storing a first flag indicating that the sequence is necessary and a second flag indicating that the sequence is not necessary according to the ambient environmental temperature; In the case of performing the above, the backlight is turned on according to a flag set for the ambient environmental temperature detected by the temperature sensor, among the first flag and the second flag. The imaging device according to any one of configurations 1 to 5.
(Structure 8) The storage means stores a display stabilization wait time of the liquid crystal display section according to the ambient environmental temperature, and the control means, when the first flag is set, 8. The imaging device according to configuration 7, wherein the backlight is turned on after the display stabilization waiting time stored in the storage means has elapsed.
(Configuration 9) Identification means for identifying an activation factor of a display device including a touch panel; a first sequence for prioritizing lighting of the display device over activation of the touch panel according to the activation factor; A display control device comprising: a control means for switching between a second sequence in which the timing at which lighting is completed and the timing at which the touch panel becomes operable is small; and a second sequence.
(Structure 10) Storage means storing whether to start the display device in a first mode or in a second mode for each of a plurality of startup factors for starting a display device including a touch panel; comprising: an identification means for identifying a starting factor when starting the display device; and a control means for starting the display device in a mode stored in the storage means for the starting factor identified by the identification means, In the first mode, a first sequence is executed that prioritizes lighting of the display device over activation of the touch panel, and in the second mode, the timing at which the display device lights up and the timing at which the touch panel becomes operational are executed. A display control device characterized in that a second sequence with a small deviation from the second sequence is executed.
(Structure 11) A program that causes a computer to function as each means of the imaging device according to any one of Structures 1 to 8.
(Method 1) A method for controlling an imaging device equipped with a display device having a touch panel, comprising: identifying a startup factor when starting the display device; The method includes the step of switching between a first sequence that prioritizes lighting of the display device and a second sequence that has a small difference between the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operable. Features: A method for controlling an imaging device.
(Method 2) A method for controlling an imaging device including a display device having a touch panel, the method comprising: a first mode in which a first sequence is executed that prioritizes lighting of the display device over activation of the touch panel; setting for each of the plurality of activation factors of the display device a second mode for executing a second sequence in which the timing at which the touch panel lights up and the timing at which the touch panel becomes operable are small; A method for controlling an imaging device, comprising the steps of: identifying an activation factor when activating a display device; and activating the display device in a mode set for the identified activation factor. .

100 Digital camera 101 System control section 111 Liquid crystal display section 115 Shutter button 119 Power button 120 Operation member 127 Touch panel 128 Electronic viewfinder 129 Eyepiece detection section 130 Temperature sensor 131 Backlight

Claims (13)

a display device including a touch panel;
Identification means for identifying a startup factor when starting the display device;
A first sequence in which lighting of the display device is prioritized over startup of the touch panel according to the activation factor, and a difference between the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operational is small. An imaging device comprising: a control means for switching between a second sequence and a second sequence. The control means executes the first sequence when the activation factor is powering on the imaging device by operating a power button or preparing for shooting by operating a shutter button, and executes the first sequence when the activation factor is another operation. The imaging apparatus according to claim 1 , wherein the second sequence is executed when the following occurs. electronic viewfinder,
notification means for notifying the control means to switch the display destination of a predetermined image from the electronic viewfinder to the display device;
The control means executes the first sequence when the notification is received with the shutter button pressed, and executes the second sequence when the notification is received with the shutter button not pressed. The imaging device according to claim 1, wherein the imaging device executes the sequence of. comprising a detection means for detecting eye contact and eye departure of the user with respect to the electronic viewfinder,
The imaging apparatus according to claim 3, wherein the notification means notifies the control means of the notification when the eye separation is detected. a display device including a touch panel;
an operating member that causes the display device to display a menu screen;
a first mode in which a first sequence is executed that prioritizes lighting of the display device over activation of the touch panel via the menu screen, a timing at which the display device lights up, and a timing at which the touch panel becomes operational; a second mode for executing a second sequence with a small deviation from the second sequence for each of a plurality of activation factors for activating the display device;
Identification means for identifying a activation factor when activating the display device;
An imaging device comprising: control means for activating the display device in a mode set by the setting means in response to the activation factor identified by the identification means. The display device has a liquid crystal display section and a backlight,
a temperature sensor that measures the ambient temperature of the imaging device;
storage means for storing a display stabilization wait time of the liquid crystal display section according to the surrounding environment temperature,
The control means, when executing the first sequence, waits for the elapse of the display stabilization waiting time according to the ambient environmental temperature detected by the temperature sensor, and then turns on the backlight. The imaging device according to claim 1 or 5. The display device has a liquid crystal display section and a backlight,
a temperature sensor that measures the ambient temperature of the imaging device;
A first flag indicating that it is necessary to turn on the backlight after the display stabilization of the liquid crystal display section and a second flag indicating that it is not necessary to turn on the backlight are stored according to the ambient environmental temperature. and a storage means for
When executing the first sequence, the control means controls the control means according to the flag set for the ambient environment temperature detected by the temperature sensor, out of the first flag and the second flag. The imaging device according to claim 1 or 5, characterized in that a backlight is turned on. The storage means stores a display stabilization wait time of the liquid crystal display section according to the ambient environmental temperature,
2. The control means, when the first flag is set, waits for the display stabilization waiting time stored in the storage means to elapse, and turns on the backlight. 7. The imaging device according to 7. Identification means for identifying an activation factor of a display device including a touch panel;
A first sequence in which lighting of the display device is prioritized over startup of the touch panel according to the activation factor, and a difference between the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operational is small. A display control device comprising: a control means for switching between a second sequence and a second sequence. storage means storing whether to start the display device in a first mode or in a second mode for each of a plurality of activation factors for starting a display device including a touch panel;
Identification means for identifying a activation factor when activating the display device;
control means for starting the display device in a mode stored in the storage means in response to the activation factor identified by the identification means;
In the first mode, a first sequence is executed in which lighting of the display device is prioritized over activation of the touch panel, and in the second mode, the timing at which the display device is lit and the touch panel becomes operable. A display control device characterized in that a second sequence with a small deviation from timing is executed. A method for controlling an imaging device including a display device having a touch panel, the method comprising:
identifying a starting factor when starting the display device;
A first sequence in which lighting of the display device is prioritized over startup of the touch panel according to the activation factor, and a difference between the timing at which lighting of the display device is completed and the timing at which the touch panel becomes operational is small. A method for controlling an imaging device, comprising the step of switching between a second sequence and a second sequence. A method for controlling an imaging device including a display device having a touch panel, the method comprising:
A first mode in which a first sequence is executed in which lighting of the display device is prioritized over activation of the touch panel, and a second mode in which the discrepancy between the timing at which the display device lights up and the timing at which the touch panel becomes operational is small. a second mode for executing the sequence for each of the plurality of activation factors of the display device;
identifying an activation factor when activating the display device;
A method for controlling an imaging device, comprising the step of activating the display device in a mode set for the identified activation factor. A program that causes a computer to function as each means of the imaging device according to claim 1.

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