JP2018148407A - Imaging apparatus, control method thereof, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly perform live view display after image recording while suppressing power consumption.SOLUTION: As a driving method (driving mode) of an imaging unit 104, there are a live sensor drive (first mode) and a still image sensor drive (second mode). When a control unit 101 receives a recording instruction when a display image processing unit 105 generates a display image based on an image signal from the imaging unit 104 in a first mode, the control unit 101 switches a drive mode of the imagining unit 104 into the second mode. In addition, the control unit 101 causes generation of the display image and generation of the recording image to start in such a state (in the second mode). Further, when half-press of a shutter button is canceled after the generation of the display image is started, the drive mode of the imaging unit 104 is switched to the first mode to start the generation of the display image.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technique for driving control of an imaging unit in an imaging apparatus.

  Conventionally, there are a plurality of drive methods as a method of driving an image sensor included in an image pickup apparatus. For example, in order to perform framing before shooting, there is a drive method (hereinafter, live sensor drive) that displays a through image on a display unit such as an LCD. In addition, there is a drive method (hereinafter, still image sensor drive) that records a still image in accordance with a shooting instruction from a user. In live sensor drive, since real-time performance and power saving are more important than image quality, an image pickup device usually reads out the number of pixels of the image sensor to achieve output at a predetermined frame rate within a predetermined power consumption. ing. In addition, since the image quality is given priority in still image sensor driving, the imaging apparatus reads all pixels of the imaging sensor.

  The imaging apparatus switches from live sensor drive to still image sensor drive at the start of shooting, and switches from still image sensor drive to live sensor drive at the end of shooting. Here, let us consider live return (return to live view display) at the end of shooting. In order to return to live, it is necessary to switch the sensor drive from still image to live. When switching the sensor drive, it is necessary to change the setting value for image quality corresponding to each sensor drive. Since a predetermined time is required for the sensor drive switching process and the accompanying image quality setting value changing process, a delay occurs until the display image is actually displayed on the display unit. For this reason, the display unit is blacked out or displays a predetermined freeze image until that time.

  It is required to quickly return to live so that the next shooting can be performed immediately after shooting, that is, the angle of view for the next shooting can be adjusted immediately. Patent Document 1 reads out an image signal for a still image between each field for creating a display image so that the screen does not black out or freeze during continuous shooting. In Patent Document 2, the frame rate of a moving image is determined in accordance with the shutter speed of a still image so that blackout is not performed during recording of the still image during moving image shooting, and the drive of the image sensor is switched between still image recording and moving image recording. I do not have to.

JP 2012-23496 A Japanese Patent Laid-Open No. 2008-301286

  However, although Patent Document 1 can perform live display during continuous shooting, it cannot solve the live return delay after the end of continuous shooting. Further, Patent Document 2 can display live when recording a still image during moving image shooting, but cannot solve the delay in returning to live after shooting a still image when not recording moving image.

  Further, in Patent Documents 1 and 2, it is possible to eliminate the delay of the live return after shooting by maintaining the sensor drive that always generates both the recording image and the live image without returning to the live sensor drive. Is possible. However, if this is done, there is a problem in that power consumption increases because all pixels of the image sensor are always read out at a predetermined frame rate even during live display.

  An object of the present invention is to quickly perform live view display after image recording while suppressing power consumption.

  To achieve the above object, the present invention records an image capturing unit, a first generating unit that generates a display image based on an image captured by the image capturing unit, and an image captured by the image capturing unit. A second generation unit that generates an image for use, a display unit that displays an image for display generated by the first generation unit, and the first mode or the second mode as the drive mode of the imaging unit, and is selected Driving the imaging unit in a driving mode, and controlling the first generation unit and the second generation unit, the control unit by the imaging unit driven in the first mode When the first generation unit generates the display image based on the captured image and receives a recording instruction, the drive mode is switched to the second mode, and the first generation is performed in that state. Said display by parts The drive mode is started in response to a predetermined condition being satisfied after image generation and generation of the recording image by the second generation unit are started, and the first generation unit starts generating the display image. Is switched to the first mode, and the generation of the display image by the first generation unit is started.

  According to the present invention, live view display after image recording can be performed quickly while suppressing power consumption.

It is a block diagram which shows the structure of an imaging device. It is a flowchart of processing of live display and still image shooting. It is a flowchart of processing of live display and still image shooting.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing the configuration of the imaging apparatus according to the first embodiment of the present invention. The imaging apparatus 100 is configured as a digital camera or a video camera, for example, and can perform live view display and recording of captured images.

  The system control unit 101 (control unit) includes a CPU (MPU), a memory (DRAM, SRAM), and the like, and executes various processes (programs) to control each block of the imaging apparatus 100 or between each block. Control data transfer. The operation unit 102 includes switches for inputting various operations related to photographing, such as a power button, a shutter button, and a zoom lever. The operation unit 102 includes a menu display button, a determination button, other cursor keys, a pointing device, a touch panel, and the like. When these keys and buttons are operated by the user, the operation unit 102 transmits an operation signal to the system control unit 101 (hereinafter also abbreviated as the control unit 101). The control unit 101 controls each block of the imaging apparatus 100 according to an operation signal from the operation unit 102. The bus 103 is a general-purpose bus for sending various data, control signals, instruction signals, and the like to each block of the imaging apparatus 100.

  The imaging unit 104 includes an imaging element such as a CCD sensor or a CMOS sensor. The imaging unit 104 converts an optical image of a subject captured by a lens into an image signal by an imaging element, converts the image signal into a digital signal, and displays an image processing unit 105 (first generation unit) and a recording image. The data is transmitted to the processing unit 107 (second generation unit). There are a plurality of driving methods (driving modes) of the imaging unit 104. For example, there is a live sensor drive that displays a live image on the display unit 106 in order to perform framing before shooting. In addition, there is a still image sensor drive for recording a still image in accordance with a shooting instruction from a user. The live sensor drive is a mode for generating an image for display on the display unit 106, which is referred to as a first mode. Still image sensor driving is a mode for generating a recording image, which is referred to as a second mode. In the first mode, in order to place more emphasis on real-time performance and power saving than image quality, the control unit 101 implements output at a predetermined frame rate within predetermined power consumption by reading out the number of pixels of the image sensor. In the second mode, in order to prioritize image quality, the control unit 101 reads out all pixels of the image sensor. The control unit 101 selects the first mode or the second mode as the driving mode of the imaging unit 104 according to the state of the imaging device 100 (switches the driving method), and drives the imaging unit 104 in the selected driving mode.

  Note that the imaging unit 104 can simultaneously transmit the generated image signal to both the display image processing unit 105 and the recording image processing unit 107. However, in that case, the imaging unit 104 needs to read all pixels at a live frame rate so that the generated image signal can be used for both display and recording. Therefore, in this case, there is a demerit that power consumption is increased.

  The display image processing unit 105 performs image quality adjustment processing for adjusting white balance, color, brightness, and the like on the input digital signal based on setting values. The image signal processed by the display image processing unit 105 is transmitted to the display unit 106 by the control unit 101. Some of the setting values used in the display image processing unit 105 are determined by the driving method of the imaging unit 104 in addition to the settings related to shooting set in advance by the user. Therefore, when the driving method of the imaging unit 104 is changed, the setting value used in the display image processing unit 105 needs to be changed accordingly.

  The display unit 106 displays a video based on the image signal transmitted from the display image processing unit 105, an operation screen (menu screen) for operating the imaging apparatus 100, and the like. The configuration of the display unit 106 is not limited, but is a display device such as a liquid crystal display, an organic EL display, or electronic paper.

  The recording image processing unit 107 performs image quality adjustment processing for adjusting white balance, color, brightness, and the like on the input digital signal based on setting values. The recording image processing unit 107 encodes the image signal to generate a compressed image signal. The image signal processed by the recording image processing unit 107 is transmitted to the recording unit 108 by the control unit 101.

  The recording unit 108 records the compressed image signal generated by the recording image processing unit 107, control data related to shooting, and the like on the recording medium 109. The recording medium 109 is a detachable recording medium, but may be a recording medium built in the imaging apparatus 100. The recording medium 109 includes all types of recording media such as a hard disk, an optical disk, a magneto-optical disk, a CD-R, a DVD-R, a magnetic tape, a nonvolatile semiconductor memory, and a flash memory. The sensor unit 110 includes various sensors such as a gyro sensor. The control unit 101 can detect the movement of the imaging apparatus 100 itself using a gyro sensor.

  Assuming that the imaging apparatus 100 has a conventional configuration, when switching the driving method of the imaging unit 104, a predetermined time is required for the sensor drive switching process and the setting value changing process of the display image processing unit 105 associated therewith. . Therefore, there is a delay until the display image is actually displayed in live view on the display unit 106 after the sensor drive switching. In the present embodiment, this problem is solved by switching the drive mode of the imaging unit 104 and controlling the display image processing unit 105 and the recording image processing unit 107.

  Next, a characteristic operation of the imaging apparatus 100 will be described. The image capturing apparatus 100 can execute a characteristic operation in which power consumption is minimized and there is no delay in live return after shooting.

  FIG. 2 is a flowchart of live display and still image shooting processing. The processing of this flowchart is realized by the CPU reading the program stored in the ROM or the like of the control unit 101 into the RAM or the like and executing it. When a power button included in the operation unit 102 is pressed by the user, each block of the imaging apparatus 100 is turned on to enter an activated state, and the process of FIG. 2 is started.

  First, the control unit 101 sets the driving method of the imaging unit 104 to the first mode for live use (step S201). Accordingly, the control unit 101 also sets a setting value used by the display image processing unit 105 corresponding to the first mode. Next, the control unit 101 starts processing (live display processing) for displaying the image signal transmitted from the display image processing unit 105 at a predetermined frame rate as needed on the display unit 106 (step S202). Thereby, the display image processing unit 105 generates a display image based on the image signal from the imaging unit 104 driven in the first mode, and the live view display is performed using the display image. The user can perform framing for shooting while looking at the display unit 106.

  Next, the control unit 101 determines whether or not a full press of the shutter button included in the operation unit 102 (SW2 on) is detected (step S203). When the shutter button is pressed, the switches SW1 and SW2 are sequentially turned on. The control unit 101 determines that the start of the shooting preparation operation is instructed when the switch SW1 is turned on, and determines that the start of recording is instructed when the switch SW2 is turned on. If the result of the determination in step S203 is that a full press of the shutter button is not detected, the control unit 101 determines whether or not the power button included in the operation unit 102 has been pressed (step S204). If the power button has not been pressed, the control unit 101 returns the process to step S203. On the other hand, if the power button has been pressed, the control unit 101 turns off the power of each block of the imaging apparatus 100 and ends the process in FIG. The process ends.

  If it is determined in step S203 that the shutter button has been fully pressed, the control unit 101 stops the live display process in the display unit 106 in order to shift to recording a still image (step S205). Then, the control unit 101 switches the driving method of the imaging unit 104 to the second mode for still images (step S206). Accordingly, the control unit 101 also sets a setting value used by the display image processing unit 105 corresponding to the second mode. Next, the control unit 101 controls the recording image processing unit 107 to start still image generation processing, that is, processing for generating a recording image from the image signal obtained by the imaging unit 104 (step S207). . Thereby, based on the image signal from the imaging unit 104 driven in the second mode, the recording image processing unit 107 generates a recording image. The recording image is recorded on the recording medium 109 from the generation completed.

  Next, the control unit 101 determines whether or not the half-pressed state of the shutter button included in the operation unit 102 is maintained (SW1 remains on) (step S208). In the present embodiment, as the “predetermined condition” for switching the drive mode of the imaging unit 104 to the second mode is satisfied, the half-pressed state of the shutter button is not maintained (half-press is released). Illustrate. If the half-pressed state of the shutter button is held, the control unit 101 performs processing for displaying the image signal transmitted from the display image processing unit 105 at a predetermined frame rate on the display unit 106 as needed (live display). Process) is started (step S209). Therefore, the display image processing unit 105 starts generating a display image based on the image signal from the imaging unit 104 while the driving method of the imaging unit 104 is still switched to the second mode. As a result, the live view display is immediately restarted (live return). At this time, since the driving method of the imaging unit 104 is not switched, a delay in live view display is avoided.

  On the other hand, as a result of the determination in step S208, when the half-pressed state of the shutter button is not held (a predetermined condition is satisfied), the control unit 101 returns the process to step S201. Thereby, the live view display based on the image signal from the imaging unit 104 driven in the first mode is resumed.

  Next, the control unit 101 determines whether or not the full press of the shutter button included in the operation unit 102 (ON of SW2) is detected again (step S210). If the shutter button is not fully pressed, the control unit 101 determines whether or not the half-pressed state of the shutter button included in the operation unit 102 is maintained (SW1 remains on) (step S211). . If the half-pressed state of the shutter button is maintained, the control unit 101 returns the process to step S210. If it is detected in step S210 that the shutter button is fully pressed, the control unit 101 stops the live display process in the display unit 106 in order to shift to recording a still image (step S213), and the process is performed in step S207. Return to. Therefore, the user can repeat generation and recording of a still image and resumption of live view display in the second mode by turning on the switch SW2 unless the switch SW1 is turned off.

  On the other hand, if the result of determination in step S211 is that the half-pressed state of the shutter button is not maintained (predetermined conditions are met), the control unit 101 stops the live display process in the display unit 106 (step S212). The process returns to step S201. As a result, the driving method of the imaging unit 104 is switched from still image sensor driving to live sensor driving (first mode), and the live view display state based on the image signal from the imaging unit 104 driven in the first mode Return to.

  According to this processing, if the shutter button is half-pressed after still image shooting, live view display and transition to the next shooting can be performed while the still image sensor drive (second mode) is maintained. In addition, by the processing in step S206, the setting value used in the display image processing unit 105 already corresponds to still image sensor driving (second mode). Therefore, the sensor drive switching process after still image shooting and the setting value change process associated therewith are not required, and there is no delay when resuming live display. Therefore, if the user wants to perform the next shooting immediately after shooting a still image, the live display will continue if the shutter button is pressed halfway, so that the angle of view for the next shooting can be quickly adjusted. It becomes like this.

  On the other hand, if the live display is continued while the still image sensor is driven, the power consumption increases. However, if half-press of the shutter button is released after still image shooting, the live sensor driving is resumed (from S208 or S212 to S201), so that power consumption can be minimized.

  The generation of the recording image by the recording image processing unit 107 started in step S207 and the generation of the display image by the display image processing unit 105 started in step S209 are performed in parallel. This speeds up the processing.

  According to the present embodiment, when the control unit 101 receives a recording instruction when the display image processing unit 105 is generating a display image based on the image signal from the imaging unit 104 in the first mode. Then, the drive mode of the imaging unit 104 is switched to the second mode. In this state (while in the second mode), the control unit 101 starts generating a display image and a recording image. Thereby, the live view display after the start of the generation of the recording image can be quickly performed. Further, when the half-press of the shutter button is released after generation of the display image is started, the control unit 101 switches the drive mode of the imaging unit 104 to the first mode and starts generation of the display image. . Thereby, the continuation of the second mode can be limited and the power consumption can be suppressed. Therefore, live view display after image recording can be performed quickly while suppressing power consumption.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. 3 instead of FIG. 2 with respect to the first embodiment. FIG. 3 is a flowchart of live display and still image shooting processing. The processing of this flowchart is realized by the CPU reading the program stored in the ROM or the like of the control unit 101 into the RAM or the like and executing it. The start condition of this process is the same as the process of FIG.

  The processing in steps S201 to S206 in FIG. 3 is the same as that described in FIG. In step S300, the control unit 101 starts a process (live display process) for displaying the image signal transmitted from the display image processing unit 105 at a predetermined frame rate on the display unit 106 as needed. Therefore, the display image processing unit 105 starts generating a display image based on the image signal from the imaging unit 104 while the driving method of the imaging unit 104 is still switched to the second mode. Thereby, live view display is restarted promptly. At this time, since the driving method of the imaging unit 104 is not switched, a delay in live view display is avoided.

  Next, the control unit 101 controls the recording image processing unit 107 to start a still image generation process, that is, a process of generating a recording image from the image signal obtained by the imaging unit 104 (step S301). . Thereby, based on the image signal from the imaging unit 104 driven in the second mode, the recording image processing unit 107 generates a recording image. The recording image is recorded on the recording medium 109 from the generation completed. Note that the order of step S300 and step S301 may be interchanged.

  Next, the control unit 101 determines whether or not a full press of the shutter button included in the operation unit 102 (SW2 on) is detected again (step S302). If the full press of the shutter button is not detected, the control unit 101 determines whether or not the recording image generation process started in step S301 has been completed (step S303). If the recording image generation process has not been completed, the control unit 101 returns the process to step S302. When the recording image generation process is completed in step S303, the control unit 101 stops the live display process in the display unit 106 (step S304), and returns the process to step S201. As a result, the driving method of the imaging unit 104 is switched from still image sensor driving to live sensor driving (first mode), and the live view display state based on the image signal from the imaging unit 104 driven in the first mode Return to.

  As a result of the determination in step S302, when the full press of the shutter button is detected, the control unit 101 stops the live display process in the display unit 106 in order to shift to recording a still image (step S305). Is returned to step S300. Therefore, the user can repeat generation and recording of a still image and resumption of live view display in the second mode by turning on the switch SW2 until the recording image generation processing is completed. .

  According to this processing, after still image shooting, live display is always performed with the still image sensor driven. In addition, by the processing in step S206, the setting value used in the display image processing unit 105 already corresponds to still image sensor driving (second mode). Therefore, the sensor drive switching process after still image shooting and the setting value change process associated therewith are not required, and there is no delay when resuming live display. Further, it is possible to start live display at an earlier stage as compared with the first embodiment. Further, when the recording image generation process is completed, the process returns to the live sensor drive (from S304 to S201), so that power consumption can be minimized.

  The generation of the display image by the display image processing unit 105 started in step S300 and the generation of the recording image by the recording image processing unit 107 started in step S301 are performed in parallel. This speeds up the processing.

  According to the present embodiment, it is possible to achieve the same effect as the first embodiment with respect to promptly performing live view display after image recording while suppressing power consumption.

  In the first embodiment, the determination process in step S208 is executed immediately after the start of recording image generation (S207). Therefore, there are cases where the drive mode of the imaging unit 104 can be quickly returned to the first mode by releasing the shutter button halfway, which is advantageous in terms of power consumption reduction. On the other hand, in the second embodiment, since step S300 is executed immediately after step S206, live view display can be resumed at an earlier stage.

  By the way, whether or not various “predetermined conditions” described below are satisfied in the determination processing in steps S208 and S211 in FIG. 2 in the first embodiment and step S303 in FIG. 3 in the second embodiment. Modifications such as replacement with such determination processing are possible.

  For example, one or both of steps S208 and S211 in FIG. 2 are replaced with determination of whether or not the recording image generation processing is completed, and when the recording image generation processing is completed, the control unit 101 sets “predetermined condition” May be determined to have been established. Also, step S303 in FIG. 3 is replaced with a determination as to whether or not the half-pressed state of the shutter button is held, and when the half-pressed state is released, the control unit 101 determines that the “predetermined condition” is satisfied. May be.

  In addition, the following may be considered as predetermined conditions applicable to any or all of steps S208 and S211 in FIG. 2 and step S303 in FIG.

  For example, the predetermined condition may be satisfied when a predetermined time elapses after the drive mode of the imaging unit 104 is switched to the second mode in step S206 in response to receiving the recording instruction. According to this, when a predetermined time elapses, switching to live sensor driving is performed. Since the live sensor drive can be returned to after a predetermined time has elapsed, it is possible to balance the maintenance of the live view display and the power consumption reduction.

  Alternatively, the predetermined condition may be satisfied when the control unit 101 determines that the main subject is not moving. The movement of the main subject is detected by the control unit 101 based on the captured image by a known method such as using a motion vector of the optical image of the main subject in the main subject area. For example, the control unit 101 determines that the main subject is not moving when the stop state of the main subject continues for a threshold time. This switches to live sensor drive when the main subject is not moving. Therefore, while the main subject is moving, it is possible to quickly return to live while the still image sensor is driven, so that the user can easily perform the next shooting while following the subject. Since it is possible to return to live sensor driving by stopping the main subject, it is possible to balance the maintenance of live view display and power consumption reduction.

  Alternatively, the predetermined condition may be satisfied when the control unit 101 determines that the imaging apparatus 100 is not moving. The control unit 101 determines the presence or absence of movement of the imaging apparatus 100 from the detection result of the gyro sensor of the sensor unit 110. For example, the control unit 101 determines that the imaging device 100 is not moving when the stop state of the imaging device 100 continues for a threshold time. According to this, when the imaging device 100 is not moving, it is switched to live sensor driving. While the image capturing apparatus 100 is moving, it is possible to quickly return to the live display while driving the still image capturing sensor, so that the user can easily perform the next capturing while following the subject. Since it is possible to return to live sensor driving by stopping the imaging apparatus 100, it is possible to balance the maintenance of live view display and the reduction of power consumption.

  Note that the still image recording in the first and second embodiments can be applied to the case of continuous shooting (continuous shooting) of still images. When the recording image is generated for continuous shooting, the predetermined condition may be satisfied when the continuous shooting of the still image is completed. According to this, when continuous shooting is finished, switching to live sensor driving is performed. During the period of continuous shooting, it is possible to quickly return to the live display while driving the still image sensor, so that the user can easily perform the next shooting while following the subject.

  Note that the imaging apparatus 100 has a power saving mode in which the display unit 106 is automatically turned off to save power. For example, in the power saving mode, the display unit 106 is turned off when the operation unit 102 has not been operated for a certain period of time. The predetermined condition may be satisfied when the power of the display unit 106 is turned off. According to this, after shooting a still image, when live display is performed with the still image sensor driven, when the power of the display unit 106 is turned off, the live sensor driving is switched. Accordingly, at the start of the next live display, live display is performed by driving the live sensor. This eliminates the need for live display stop processing at the timing of switching from still image sensor drive to live sensor drive, thus avoiding phenomena such as temporary freeze or blackout of live display. it can.

  By the way, in each of the above embodiments, it is preferable that the frame rate in the live sensor drive and the frame rate in the still image sensor drive are the same. For example, when live display is performed at a frame rate of 30 fps in live sensor driving, the control unit 101 can perform live display without difference in frame rate by performing live display at 30 fps even in still image sensor driving. Become. The imaging apparatus 100 has a normal mode and a power saving mode as operation modes. In both the normal mode and the power saving mode, it is preferable that the frame rate by the live sensor drive and the frame rate by the still image sensor drive are the same. Further, it is assumed that the frame rate by the live sensor drive is higher in the normal mode than in the power saving mode. For example, when live display is performed at a frame rate of 15 fps in live sensor driving in the power saving mode, the control unit 101 performs live display at a frame rate of 15 fps in still image sensor driving. As a result, display with no difference in frame rate depending on the drive mode is possible, and power consumption can be suppressed.

  Note that the image signals used in steps S300 and S310 in FIG. 3 may be different from each other or the same. When another image signal is used, in step S301, the image signal generated by exposure for the still image in the imaging unit 104 is transmitted only to the recording image processing unit 107, and the recording image processing unit Reference numeral 107 generates a recording image. In step S300, the image signal generated by live exposure in the imaging unit 104 is transmitted only to the display image processing unit 105, and the display image processing unit 105 generates a display image. In this way, since the exposure condition for still images and the exposure condition for live images can be set separately, live display independent of exposure conditions such as the shutter speed for still images can be performed. On the other hand, when the same image signal is used, the image signal generated by exposure for the still image in the imaging unit 104 is transmitted to the display image processing unit 105 and the recording image processing unit 107 at the same time. To do. The display image processing unit 105 generates a display image, and the recording image processing unit 107 generates a recording image. In this case, live display can be performed from the image signal generated for the still image, so that quicker live return is possible. After the process returns to step S201, the image signal generated by performing live exposure in the imaging unit 104 is transmitted only to the display image processing unit 105 and displayed live.

  Note that a plurality of types of predetermined conditions described above may be applied in combination. Therefore, the predetermined conditions applied to steps S208 and S211 in FIG. 2 and step S303 in FIG. 3 may be different from each other.

(Other examples)
The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 101 System control part 104 Image pick-up part 105 Image processing part for display 106 Display part 107 Image processing part for recording

Claims (13)

An imaging unit;
A first generation unit that generates a display image based on an image captured by the imaging unit;
A second generation unit that generates a recording image based on the image captured by the imaging unit;
A display unit for displaying the display image generated by the first generation unit;
A control unit that selects the first mode or the second mode as the drive mode of the imaging unit, drives the imaging unit in the selected drive mode, and controls the first generation unit and the second generation unit; Have
When the control unit receives a recording instruction when the first generation unit generates the display image based on an image captured by the imaging unit driven in the first mode, the control unit performs the driving The mode is switched to the second mode, and in this state, generation of the display image by the first generation unit and generation of the recording image by the second generation unit are started, and the first generation unit After the start of generation of the image for use, the drive mode is switched to the first mode and the generation of the display image by the first generation unit is started in response to a predetermined condition being satisfied. Imaging device. Has a shutter button,
The recording instruction is accepted when the shutter button is fully pressed,
The imaging apparatus according to claim 1, wherein the predetermined condition is satisfied when the half-press of the shutter button is released.   The predetermined condition is satisfied when generation of the recording image started in a state where the drive mode is switched to the second mode in response to receiving the recording instruction is completed. Item 2. The imaging device according to Item 1.   The imaging apparatus according to claim 1, wherein the predetermined condition is satisfied when a predetermined time elapses after the drive mode is switched to the second mode in response to receiving the recording instruction. .   The imaging apparatus according to claim 1, wherein the predetermined condition is satisfied when the control unit determines that the main subject is not moving.   The imaging apparatus according to claim 1, wherein the predetermined condition is satisfied when the control unit determines that the imaging apparatus is not moving.   When the generation of the recording image started in a state where the drive mode is switched to the second mode in response to receiving the recording instruction is generation for continuous shooting of still images, the predetermined condition is: The imaging apparatus according to claim 1, wherein the imaging apparatus is established when the continuous shooting of the still image is completed. It has a power saving mode for turning off the display unit for power saving,
The imaging apparatus according to claim 1, wherein the predetermined condition is satisfied when the display unit is turned off in the power saving mode.   The imaging apparatus according to claim 1, wherein the number of pixels of the recording image is larger than the number of pixels of the display image. As operation mode, it has normal mode and power saving mode,
The frame rate according to the first mode in the normal mode is higher than the frame rate according to the first mode in the power saving mode,
The frame rate according to the first mode and the frame rate according to the second mode are the same in any of the normal mode and the power saving mode. The imaging device described in 1.   The control unit generates the display image by the first generation unit and the recording by the second generation unit when the drive mode is switched to the second mode in response to receiving the recording instruction. The imaging apparatus according to claim 1, wherein the image generation is performed in parallel. An imaging unit;
A first generation unit that generates a display image based on an image captured by the imaging unit;
A second generation unit that generates a recording image based on the image captured by the imaging unit;
A display unit that displays a display image generated by the first generation unit, and a method for controlling the imaging apparatus,
A control step of selecting the first mode or the second mode as a driving mode of the imaging unit, driving the imaging unit in the selected driving mode, and controlling the first generation unit and the second generation unit; ,
The control step receives the recording instruction when the first generation unit is generating the display image based on the image captured by the imaging unit driven in the first mode, and the drive The mode is switched to the second mode, and in this state, generation of the display image by the first generation unit and generation of the recording image by the second generation unit are started, and the first generation unit After the start of generation of the image for use, the drive mode is switched to the first mode and the generation of the display image by the first generation unit is started in response to a predetermined condition being satisfied. Control method of imaging apparatus.   A program causing a computer to execute the control method of the imaging apparatus according to claim 12.

Images