JP2008227925A - Photographing apparatus and lighting control method for back light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photographing apparatus and lighting control method for back light in which power consumption can be sufficiently reduced. <P>SOLUTION: A digital camera 1 which forms an image of an object on a CCD 114 and produces an image signal includes: a liquid crystal monitor 13 with a back light 13a for displaying an image based on the image signal from the CCD 114; a release button 12 comprising a touch sensor for detecting a touch with a finger; and an lighting control means 130 for turning on or turning off the back light 13a, respectively, in response to whether a finger touches the release button 12 detected by the touch sensor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a photographing apparatus that forms an image signal by imaging a subject on an image sensor, and a backlight lighting control method in the photographing apparatus.

  In general, a digital camera, which is one of photographing apparatuses, includes a liquid crystal monitor that displays an image captured in real time (through image), an image recorded on a recording medium, and the like. As a liquid crystal monitor, a liquid crystal monitor using a transmissive liquid crystal panel is often used. Such a liquid crystal monitor is provided with a backlight on the back side of the liquid crystal panel. Since the backlight emits illumination light from the back side of the LCD panel, it consumes a lot of power. Therefore, the battery (primary battery or secondary battery) used in a digital camera has a short usage time. There are problems that the number of shots that can be taken is small, and that the battery needs to be frequently replaced (or charged).

Therefore, in Patent Document 1, a touch sensor is provided in the grip portion of the camera, and the power supply to the liquid crystal monitor is cut off after a lapse of a predetermined time since the grip of the camera is no longer detected by the touch sensor. Techniques to prevent it have been proposed.
JP 10-319490 A

  However, in the technique proposed in Patent Document 1, the power supply to the liquid crystal monitor is cut off after a predetermined time has elapsed since the gripping of the camera is no longer detected. However, there is a problem that power is continuously supplied, and therefore power consumption is not reduced. In addition, for example, when shooting is not performed using this camera and the camera is moved to another shooting location while holding the grip portion of the camera, power is still supplied to the liquid crystal monitor. Therefore, there is a problem that power consumption is not reduced.

  In recent years, with the increasing number of functions of photographing apparatuses typified by digital cameras, the circuit scale for controlling the photographing apparatus has also increased, and accordingly, the power consumed by the photographing apparatus tends to increase. For this reason, reduction of power consumption in the photographing apparatus is one of important issues.

  In view of the above circumstances, an object of the present invention is to provide a photographing apparatus and a backlight lighting control method capable of sufficiently reducing power consumption.

A first photographing device of the photographing device of the present invention that achieves the above object is a photographing device that forms an image signal by forming an image of a subject on an imaging element.
A display screen with backlight for displaying an image based on the image signal;
A release button for instructing shooting by pressing, and
A touch sensor for detecting that a finger touches the release button;
And a lighting control unit that turns on or off the backlight of the display screen depending on whether or not a finger touches the release button by the touch sensor.

  When shooting using a shooting device, the user often sees an image displayed on the display screen at the time of shooting, and rarely keeps watching the image at the end of shooting. Therefore, it often takes a short time to view an image during shooting. The first photographing apparatus of the present invention has been devised with attention paid to this point.

  Since the first photographing apparatus of the present invention controls the backlight to be turned off when it is detected by the touch sensor that the finger is not touching the release button, the power consumption can be reduced. On the other hand, if it is detected by the touch sensor that the finger touches the release button, it is highly likely that the user is in the shooting state, and thus the backlight is turned on. By controlling in this way, the camera proposed in the above-mentioned Patent Document 1 continues to supply power to the liquid crystal monitor until a predetermined time elapses, or even if no image is being taken. Compared with a technique in which power is supplied to the liquid crystal monitor in a state where the grip portion is held, power consumption can be sufficiently reduced.

The second imaging device of the imaging device of the present invention that achieves the above object is an imaging device that forms an image of a subject on an imaging device to generate an image signal.
A display screen with backlight for displaying an image based on the image signal;
An angular velocity sensor for detecting whether or not the photographing apparatus is stationary;
It is characterized by comprising lighting control means for turning on or off the backlight of the display screen depending on whether or not the angular velocity sensor detects that the photographing apparatus is stationary.

  When photographing with a photographing device, the user often performs photographing while the photographing device is stationary. The second photographing apparatus of the present invention has been devised with attention paid to this point.

  Since the second imaging device of the present invention controls the backlight to be turned off when the angular velocity sensor detects that the imaging device is not stationary, power consumption can be reduced. On the other hand, when the angular velocity sensor detects that the photographing apparatus is stationary, it is highly likely that the user is in the photographing state, and thus the backlight is turned on. By controlling in this way, power consumption can be sufficiently reduced.

Furthermore, a third imaging device of the imaging device of the present invention that achieves the above object is an imaging device that forms an image on an imaging element and generates an image signal.
A display screen with backlight for displaying an image based on the image signal;
Face detecting means for detecting a face in a subject based on an image signal obtained by the imaging element;
It is characterized by comprising lighting control means for turning on or off the backlight of the display screen according to whether or not a face is detected by the face detecting means.

  When photographing a subject with the photographing device, if a face in the subject is detected, the user is likely to be in a photographing state. The third photographing apparatus of the present invention has been devised with attention paid to this point.

  Since the third photographing apparatus of the present invention controls the backlight to be turned off when no face is detected by the face detection means, the power consumption can be reduced. On the other hand, when a face is detected, it is highly likely that the user is in a shooting state, so control is performed to turn on the backlight. By controlling in this way, power consumption can be sufficiently reduced.

The fourth imaging device of the imaging device of the present invention that achieves the above object is an imaging device that forms an image of a subject on an imaging device to generate an image signal.
A display screen with backlight for displaying an image based on the image signal;
Brightness calculation means for calculating an amount correlated with the brightness of the subject;
And a lighting control unit for turning on or off the backlight of the display screen according to whether or not the brightness calculating unit calculates an amount of the subject having a predetermined brightness or more. To do.

  When shooting is not performed, it is often the amount of brightness that does not make sense as a subject (amount having a brightness less than a predetermined value). On the other hand, when the subject has an amount having a predetermined brightness or more, it is highly likely that the user is in a shooting state. Since the fourth imaging device of the present invention controls the backlight to be turned off when the subject has an amount less than a predetermined brightness, the power consumption can be reduced. On the other hand, if the subject has an amount of brightness that is greater than or equal to a predetermined level, there is a high possibility that the subject is in a shooting state, so control is performed so that the backlight is turned on. By controlling in this way, power consumption can be sufficiently reduced.

Furthermore, a fifth imaging device of the imaging device of the present invention that achieves the above object is an imaging device that generates an image signal by imaging a subject on an imaging element.
A display screen with backlight for displaying an image based on the image signal;
Shutter speed calculating means for calculating a shutter speed for shooting,
And a lighting control unit that turns on or off the backlight of the display screen according to whether or not a shutter speed faster than a predetermined value is calculated by the shutter speed calculating unit.

  When the field luminance is low, it is difficult to visually recognize the through image displayed on the display screen even when the backlight is turned on. In such a case, a shutter speed that is less than a predetermined speed is calculated. Since the fifth photographing apparatus of the present invention controls the backlight to be turned off when the shutter speed at a speed lower than the predetermined speed is calculated, the power consumption can be reduced. On the other hand, when a shutter speed faster than a predetermined value is calculated, the field brightness is bright, so that the backlight is turned on. By controlling in this way, power consumption can be sufficiently reduced. Further, in the fifth photographing apparatus of the present invention, when photographing is performed at a shutter speed less than a predetermined speed, the backlight is turned off, so that the user can easily recognize that camera shake is likely to occur. There is also.

A sixth imaging device of the imaging device of the present invention that achieves the above object is an imaging device that forms an image of a subject on an imaging device to generate an image signal.
A display screen with a backlight that displays an image based on the image signal is provided.
A release button that instructs shooting by pressing and a touch sensor that detects that a finger touches the release button, and the finger touches the release button by the touch sensor;
An angular velocity sensor that detects whether or not the photographing apparatus is stationary, and the angular velocity sensor detects that the photographing apparatus is stationary;
A face detecting means for detecting a face in the subject based on the image signal obtained by the image sensor, and the face is detected by the face detecting means;
Brightness calculating means for calculating an amount correlated with the brightness of the subject is provided. The brightness calculating means calculates the amount that the subject has a brightness greater than or equal to a predetermined level, and the shutter speed for shooting. A shutter speed calculating means for calculating, and the shutter speed calculating means calculates a shutter speed faster than a predetermined value;
The backlight of the display screen is turned on when any one of the plurality of conditions is selected from the plurality of conditions, and any one of the plurality of conditions is selected. A lighting control means for turning off the backlight when none is satisfied is provided.

  Since the sixth imaging device of the present invention has the above-described configuration, for example, when two conditions of a condition where the imaging device is stationary and a condition where a face is detected are selected, any of the two conditions is selected. When none of the above is satisfied, the backlight is controlled to be turned off. For this reason, power consumption can be reduced sufficiently. On the other hand, when one of the two conditions is satisfied, the backlight is turned on. Thereby, when the photographing apparatus is stationary, a through image such as a landscape can be displayed on the display screen, and when a face is detected, an image representing the face can be displayed on the display screen.

In addition, the first backlight lighting control method of the backlight lighting control method of the present invention that achieves the above object includes an imaging element that generates an image signal in response to imaging of an object, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The photographing apparatus further includes a release button that instructs photographing by pressing, and a touch sensor that detects that a finger touches the release button,
The backlight of the display screen is turned on or off depending on whether or not a finger touches the release button by the touch sensor.

  The first backlight lighting control method of the present invention is a method of controlling the backlight to be turned off when it is detected by the touch sensor that the finger is not touching the release button, thereby reducing power consumption. be able to. On the other hand, if it is detected by the touch sensor that the finger touches the release button, it is highly likely that the user is in the shooting state, and thus the backlight is turned on. Since the control method is as described above, power is continuously supplied to the liquid crystal monitor or photographing is not performed until a predetermined time elapses as proposed in Patent Document 1 described above. However, the power consumption can be sufficiently reduced as compared with the technique in which power is supplied to the liquid crystal monitor when the camera grip is being held.

In addition, the second backlight lighting control method of the backlight lighting control method of the present invention that achieves the above object includes an imaging element that generates an image signal in response to imaging of an object, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The imaging device further includes an angular velocity sensor that detects whether the imaging device is stationary,
The backlight of the display screen is turned on or off depending on whether or not the angular velocity sensor detects that the photographing apparatus is stationary.

  The second backlight lighting control method of the present invention is a method for controlling the backlight to be turned off when the angular velocity sensor detects that the photographing apparatus is not stationary, and thus reduces power consumption. be able to. On the other hand, when the angular velocity sensor detects that the photographing apparatus is stationary, it is highly likely that the user is in the photographing state, and thus the backlight is turned on. Since it is the method of controlling in this way, power consumption can be reduced sufficiently.

Furthermore, a third backlight lighting control method of the backlight lighting control method of the present invention that achieves the above object includes an image sensor that generates an image signal upon receiving an image of a subject, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The imaging apparatus further includes a face detection unit that detects a face in the subject based on an image signal obtained by the imaging element,
The backlight of the display screen is turned on or off according to whether or not a face is detected by the face detection means.

  Since the third backlight lighting control method of the present invention is a method for controlling the backlight to be turned off when no face is detected, power consumption can be reduced. On the other hand, when a face is detected, it is highly likely that the user is in a shooting state, so control is performed to turn on the backlight. Since it is the method of controlling in this way, power consumption can be reduced sufficiently.

The fourth backlight lighting control method of the backlight lighting control method of the present invention that achieves the above object includes an imaging element that generates an image signal upon receiving an image of a subject, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The photographing apparatus further includes brightness calculation means for calculating an amount correlated with the brightness of the subject,
The backlight of the display screen is turned on or off depending on whether or not the brightness calculation means has calculated an amount that the subject has a predetermined brightness or more.

  Since the fourth backlight lighting control method of the present invention is a method of controlling the backlight to be turned off when the subject has an amount of brightness less than a predetermined brightness, power consumption can be reduced. On the other hand, if the subject has an amount of brightness that is greater than or equal to a predetermined level, there is a high possibility that the subject is in a shooting state, so control is performed so that the backlight is turned on. Since it is the method of controlling in this way, power consumption can be reduced sufficiently.

Further, among the backlight lighting control methods of the present invention that achieves the above object, a fifth backlight lighting control method includes an imaging element that receives an image of a subject and generates an image signal, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The photographing apparatus further includes a shutter speed calculating means for calculating a shutter speed when photographing.
The backlight of the display screen is turned on or off depending on whether or not a shutter speed faster than a predetermined value is calculated by the shutter speed calculation means.

  The fifth backlight lighting control method of the present invention is a method of controlling the backlight to be turned off when the shutter speed at a speed less than a predetermined speed is calculated, and thus can reduce power consumption. On the other hand, when a shutter speed faster than a predetermined value is calculated, the field brightness is bright, so that the backlight is turned on. Since it is the method of controlling in this way, power consumption can be reduced sufficiently. In the fifth backlight lighting control method of the present invention, the user knows that camera shake is likely to occur because the backlight is turned off when shooting is performed at a shutter speed less than a predetermined speed. There is also an effect of making it.

The sixth backlight lighting control method of the backlight lighting control method of the present invention that achieves the above object includes an imaging device that generates an image signal in response to imaging of an object, and an image based on the image signal. A backlight lighting control method in a photographing device having a display screen with a backlight to display,
The photographing apparatus includes a release button that instructs photographing when pressed and a touch sensor that detects that a finger touches the release button, and the touch sensor detects that the finger has touched the release button. ,
The imaging device includes an angular velocity sensor that detects whether the imaging device is stationary, and the angular velocity sensor detects that the imaging device is stationary;
The photographing apparatus includes a face detection unit that detects a face in a subject based on an image signal obtained by the image sensor, and the face is detected by the face detection unit;
The imaging apparatus includes brightness calculation means for calculating an amount correlated with the brightness of the subject, and the brightness calculation means has calculated the amount that the subject has a brightness greater than or equal to a predetermined value.
The photographing apparatus includes a shutter speed calculating unit that calculates a shutter speed for shooting, and a shutter speed that is faster than a predetermined value is calculated by the shutter speed calculating unit;
The backlight of the display screen is turned on when any one of the plurality of conditions is selected from the plurality of conditions, and any one of the plurality of conditions is selected. The backlight is turned off when none is satisfied.

  In the sixth backlight lighting control method according to the present invention, for example, when two conditions are selected, that is, the condition that the photographing apparatus is stationary and the condition that the face is detected, one of the two conditions is satisfied. This is a method of controlling the backlight to be turned off when not. For this reason, power consumption can be reduced sufficiently. On the other hand, when one of the two conditions is satisfied, the backlight is turned on. Thereby, when the photographing apparatus is stationary, a through image such as a landscape can be displayed on the display screen, and when a face is detected, an image representing the face can be displayed on the display screen.

  ADVANTAGE OF THE INVENTION According to this invention, the imaging device and backlight lighting control method which can fully reduce power consumption can be provided.

  Embodiments of the present invention will be described below.

  FIG. 1 is a perspective view of a digital camera which is a first embodiment of the photographing apparatus of the present invention as viewed obliquely from the upper right, FIG. 2 is a top view of the digital camera shown in FIG. 1 as viewed from above, and FIG. FIG. 2 is a rear view of the digital camera shown in FIG.

  The digital camera 1 is a photographing device that forms an image signal by forming an image of a subject on a CCD image sensor (hereinafter referred to as a CCD) that is one of the image sensors. The first embodiment of the backlight lighting control method of the present invention is applied to the digital camera 1. As shown in FIG. 1, the digital camera 1 is provided with a lens barrel 10 in the center of a camera body 1a. Further, a power button 11 is provided on the upper surface of the camera body 1a. When the power button 11 is operated, the lens barrel 10 is extended as shown in FIGS. It is like that.

  Further, on the upper surface of the camera body 1a, a power button 11 for turning on the power, a release button 12, which will be described in detail later, and a shooting mode dial 12_1 around the release button 12 are provided. When the release button 12 is pressed while 12_1 is switched to AUTO (see FIG. 2) and shooting is performed, shooting conditions are automatically set inside the digital camera 1 and shooting is performed. When the shooting mode dial 12_1 is switched to manual (reference M), manual shooting is performed. When the shooting mode dial 12_1 is further switched to moving image shooting mode, moving picture shooting is performed and the scene position (reference SP) is set. When the camera is switched to the) side, shooting conditions corresponding to the shooting scene are automatically set in the digital camera 1 and shooting is performed.

  Further, as shown in FIG. 3, a liquid crystal monitor 13 is provided on the back side of the camera body 1a. The liquid crystal monitor 13 corresponds to an example of a display screen according to the present invention, and an image based on an image signal from the CCD is displayed on the liquid crystal monitor 13. The liquid crystal monitor 13 is provided with a backlight described later. The liquid crystal monitor 13 displays a through image or a menu in the shooting mode. When the playback button 14 on the side of the liquid crystal monitor 13 is pressed once in this shooting mode, the mode is switched to the playback mode, and the already shot image is displayed on the liquid crystal monitor 13, and when the playback button 14 is pressed again, the shooting mode is displayed. The through image is displayed on the liquid crystal monitor 13. In addition, an F (photo mode) button 15 is provided next to the playback mode button 14, and a frequently used mode such as a pixel setting mode or a sensitivity setting mode can be easily switched by operating the F button 15. You can also do it.

  A cross key 16 and an OK / menu button 17 are provided below the F button 15, and a zoom switch 18 is provided above the F button 15. By operating the cross key 16 or the OK / menu button 17, the setup menu is switched to set the date and time, whether or not to display images, and the shooting menu is switched to select continuous shooting, self-timer, etc. You can do it.

  Further, below the cross key 16, a DSP / BACK button 19 used for switching the display of the liquid crystal monitor 13 or stopping the operation is provided.

  1 is provided with a xenon tube at the upper right of the front surface of the camera body 1a, and a flash light emitting unit 20 that emits flash light from the xenon tube toward the subject during flash photography. Further, a photometric sensor 21 is also provided below the flash light emitting unit 20.

  FIG. 4 is a diagram showing an internal configuration of the digital camera shown in FIG.

  The digital camera 1 drives a zoom lens 10_1a, an iris 10_1b, a focus lens 10_1c, and a zoom lens 10_1a, an iris 10_1b, and a focus lens 10_1c that constitute a photographing optical system provided in the lens barrel 10 shown in FIG. Thus, motor drivers 111, 112, and 113 are provided for performing zooming, exposure amount adjustment, and focusing.

  The digital camera 1 also includes a CCD 114, a timing generator 115, and a CPU 116.

  The CCD 114 is a solid-state imaging device that captures subject light that has passed through the zoom lens 10_1a, the iris 10_1b, and the focus lens 10_1c. The CCD 114 is provided with a large number of photoelectric conversion elements such as photodiodes that convert incident subject light into image signals that are electrical signals.

  The timing generator 115 drives the CCD 114 at a predetermined timing according to an instruction from the CPU 116. As a result, the subject light incident on the CCD 114 is photoelectrically converted at a predetermined frame rate and output from the CCD 114 as an analog image signal.

  The CPU 116 controls the entire digital camera 1. Specifically, the CPU 116 has a built-in ROM, and the operation of the entire digital camera 1 is controlled in accordance with the program procedure of the built-in ROM.

  Further, the digital camera 1 includes a CDSAMP 117 that performs processing for reducing noise of the analog image signal output from the CCD 114, and A / A that performs analog / digital conversion of the analog image signal subjected to the processing to a digital image signal. A D conversion unit 118 and an image input controller 119 for transferring image data composed of RGB converted into a digital image signal by the A / D conversion unit 118 to the SDRAM 125 as a memory via a data bus are provided.

  In addition, the digital camera 1 reads the image data of the SDRAM 125 and executes an image processing process 120 for executing an image processing process for converting the data into a YC signal, and executes the JPEG process when the image processing process is completed. A compression processing circuit 121 for compressing the image data, and a video encoder 122 for converting the image data into a video signal and leading it to the liquid crystal monitor 13 described above.

  Further, the digital camera 1 includes an AF detection circuit 123 that detects image focus information, an AE & AWB detection unit 124 that detects image brightness information and white balance information, and the above-described SDRAM 125 that is used as a work area memory. A VRAM 126 serving as a display buffer having an A area and a B area, and a media controller 127 that performs control for storing image data in the recording medium 100.

  FIG. 3 shows the liquid crystal monitor 13 described above. The liquid crystal monitor 13 is provided with a backlight 13a that emits illumination light.

  Further, the digital camera 1 is provided with lighting control means 130. Further, the release button 12 shown in FIG. 3 incorporates a touch sensor described later. The lighting control means 130 turns on or off the backlight 13a depending on whether or not the finger touches the release button 12 by the touch sensor.

  Also, FIG. 3 shows the operation buttons including the power button 11, the shooting mode dial 12_1, the playback button 14, the F button 15, the cross key 16, the OK / menu button 17, the zoom switch 18, and the DSP / BACK button 21. The group 10_100 and the flash light emitting unit 30 described above are shown.

  Here, the operation of the digital camera 1 will be briefly described. The operation of the digital camera 1 is comprehensively controlled by the CPU 116. The CPU 116 has a built-in ROM, and a program is stored in the built-in ROM. The operation of the entire digital camera 1 is controlled by the CPU 116 according to the procedure of this program. Further, the SDRAM 125 temporarily stores image data being processed when the CPU 116 controls the entire digital camera 1 in accordance with the procedure of the program described in the ROM.

  The VRAM 126 serving as a display buffer stores image data representing a through image in order in the A area and B area, and the image data in these areas are alternately supplied to the video encoder 122 to generate an image based on the image data. The images are sequentially switched and displayed on the liquid crystal monitor 13 as a through image.

  Next, the flow of image data of the digital camera 1 will be briefly described. The CPU 116 captures the subject light passing through the photographing optical system by the CCD 114, and outputs the image data generated by the CCD 114 to the CDSAMP 117 side at predetermined intervals, and the A / D conversion unit 118, the image input controller 119, image signal processing. The live image is converted into image data that can be displayed by the circuit 120 and displayed on the liquid crystal monitor 13. Further, the AF detection circuit 123 continuously moves the focus lens 10_1c back and forth with respect to the optical axis direction to perform in-focus detection, and a focused image is formed on the CCD 114. At this time, the AE & AWB detection circuit 124 detects the field luminance, and based on the detection result, the motor driver 112 sets a small aperture or an open aperture, and each color signal of R, G, B is used for white balance adjustment. The gain is adjusted. In this way, image data representing a focused image whose exposure is adjusted according to the field luminance is output to the CDSAMP 117 at predetermined intervals according to the timing signal from the timing generator 115, and a through image is displayed at a later stage. It has gained. The user performs a release operation by determining a desired composition while observing the size and balance of the subject represented by the through image. Although details of the release operation will be described later, when this release operation is performed, the CPU 116 supplies a timing signal from the timing generator 115 to form an image at the time of the release operation on the CCD 114. This timing signal informs the CCD 114 of the start and end of exposure and corresponds to a so-called shutter speed. At the end of the exposure, the CPU 116 outputs image data (image data composed of the three primary colors R, G, and B of RGB light) from the CCD 114 and supplies it to the subsequent CDSAMP 117. Further, the noise of the image data output from the CCD 114 is reduced by the CDSAMP 117, and the image data with the reduced noise is converted into a digital signal by the A / D conversion unit 118. The RGB image data converted into digital signals by the A / D conversion unit 118 is supplied to the SDRAM 125 via the data bus by the subsequent image input controller 119, and the image data of all the pixels of the CCD 114 is stored in the SDRAM 125. Remembered. When the image data corresponding to all the pixel data is stored in the SDRAM 125, the CPU 116 activates the image processing process of the image signal processing circuit 120, reads the image data of the SDRAM 125 by the image processing process, and outputs the image data to the YC signal. Let the conversion take place. Further, when the CPU 116 detects that the image processing process of the image signal processing circuit 120 is completed, the CPU 116 activates the JPEG process of the compression processing circuit 121 and causes the image data to be compressed by the JPEG process. When the CPU 116 detects that the compression processing circuit 121 has completed the compression, the CPU 116 next activates a recording processing process to record the JPEG-compressed image data on the recording medium 100 via the media controller 127. The above is the flow of shooting data.

  FIG. 5 is a cross-sectional structure diagram showing a state when the release button shown in FIG. 4 is not pressed, and FIG. 6 is a cross-sectional structure diagram showing an initial state of the release button shown in FIG. 7 is a cross-sectional structure diagram showing a state where the release button shown in FIG. 4 is further pressed (half-pressed state), and FIG. 8 is a cross-sectional structure showing a fully-pressed state of the release button shown in FIG. FIG.

  The release button 12 shown in FIG. 5 has a predetermined pressing stroke from the state shown in FIG. 5 to the state shown in FIG. 8, and the pressing is performed in an initial pressing state (FIG. 6) and a half-pressing state (FIG. 7). While detecting at the three positions of the fully pressed state (FIG. 8), a click feeling is given to the two stages of the half pressed state (FIG. 7) and the fully pressed state (FIG. 8). Hereinafter, the structure of the release button 12 will be described with reference to FIG.

  As shown in FIG. 5, the press receiving portion 12_11 of the release button 12 is inserted into a hole 1a_1 formed in the camera body 1a. When the release receiving portion 12_11 of the release button 12 is attached to the camera body 1a of the digital camera 1, the camera body 1a is attached to a portion of the camera body 1a where the release button 12 is disposed so that the release button 12 can be easily attached. An inner panel 1b fixed to the inner wall is provided, and the release button 12 is attached so that the press receiving portion 12_11 is sandwiched between the inner panel 1b and the inner wall of the camera body 1a. Here, the pressing receiving portion 12_11 is well attached to the camera body 1a by being urged by a spring 12_3 so as to press the flange portion 12_1A of the pressing receiving portion 12_11 against the inner wall of the camera body 1a.

  By appropriately selecting the spring constant of the urging spring 12_3, an operation load when the pressing receiving portion 12_11 is pushed with a finger is determined. Further, the spring 12_3 is wound around the pressing shaft portion 12_2 provided to extend downward from the pressing receiving portion 12_11 so that the pressing receiving portion 12_11 can be pressed with a stable operation load at all times. is there.

  Also, when the press receiving portion 12_11 is pressed, the inner panel 1b also has a hole 1b_1 so that the pressing shaft portion 12_2 moves down together with the press receiving portion 12_11 and the tip thereof reaches the control board 200 on which the CPU 116 and the like are mounted. Is provided. In addition, two arcuate elastic bodies 12_5 and 12_6 are provided between the tip end of the pressing shaft portion 12_2 and the control board 200, and a click feeling is provided in two steps by these elastic bodies 12_5 and 12_6. It has come to be given.

  Further, a conductive portion 12_7 is attached to the surface of the inner panel 1b on the control board 200 side, and the conductive portion 12_7 and a ground pattern formed on the control board 200 are connected by a wire 12_71. A movable contact piece 12_8 is disposed so as to be in contact with the conductive portion 12_7. The movable contact piece 12_8 is disposed so as to cross the direction in which the pressing shaft portion 12_2 extending downward from the press receiving portion 12_11 moves up and down, and one end side thereof is the conductive portion 12_7. The other end is fixed to a fixing portion 201 provided on the control board 200. A conductive portion (not shown) is also formed on the opposite end portion side from one end portion side of the movable contact piece 12_8, and the conductive portion and the ground pattern formed on the control board 200 are formed by the wire 12_81. It is connected.

  Further, the movable contact piece 12_8 is provided with a convex portion 12_82 at a part thereof, and the convex portion 12_82 is arranged so as to be urged upward in the drawing by the elastic body 12_5. In a state where the operation portion 12_1 is not operated, the contact between the movable contact piece 12_8 and the conductive portion 12_7 is reliably maintained.

  With such a configuration, in a state where the press receiving portion 12_11 is not pressed, the contact between the movable contact piece 12_8 and the conductive portion 12_7 is maintained, and as soon as the press receiving portion 12_11 starts to be pressed, the contact piece 12_8 The release button 12 includes a sensor (an example of a touch sensor according to the present invention) having an electrical contact whose end is separated from the conductive portion 12_7 and is open. In other words, a touch sensor having an electrical contact for detecting that a finger touches the release button 12 is realized. The CPU 116 sends information indicating that the finger has touched the release button 12 by the touch sensor to the lighting control unit 130. The lighting control unit 130 receives this information and turns on the backlight 13 a provided in the liquid crystal monitor 13.

  That is, after the pressing operation is started and before the click feeling is given by the elastic body 12_5, the state shown in FIG. 5 is changed to the state shown in FIG. 6, and the contact between the movable contact piece 12_8 and the conductive portion 12_7 is released. It becomes an open state and it is detected that the CPU 116 has been pressed. Thereafter, when the pressing of the press receiving portion 12_11 is advanced, as shown in FIG. 7, the first click feeling is given by the elastic body portion 12_5, and the half press state is obtained. At this point, the CPU 116 instructs the AF detection circuit 123 to set the focus, and instructs the AE & AWB detection circuit 124 to set the exposure.

  Further, after the first-stage click feeling is given, when the pressing is advanced, the second-stage click feeling is given by the elastic member 12_6 as shown in FIG. At this time, the conductive portion (not shown) formed on the surface of the elastic member 12_6 on the control board 200 side is in contact with the two patterns on the control board 200 and short-circuits the separation pattern 201 that is in an open state. By changing to the state, the CPU 116 detects that it is fully pressed. In this case, the CPU 116 controls the timing generator 115 to supply the exposure start signal and the exposure end signal to the CCD 114 to the timing generator 115 to form an image of the subject when fully pressed on the CCD 114 and at the end of the exposure, the A The image signal representing the subject when fully pressed is output to the / D converter 118.

  When taking a picture using this digital camera 1, the user often sees an image displayed on the liquid crystal monitor 13 at the time of taking the picture, and rarely keeps watching the image at the end of the picture taking. . Therefore, it often takes a short time to view an image during shooting. Therefore, the digital camera 1 according to the first embodiment turns off the backlight 13a of the liquid crystal monitor 13 when the touch sensor incorporated in the release button 12 detects that the finger is not touching the release button 12. Control to the state. By controlling in this way, power consumption can be reduced. On the other hand, when it is detected that the finger touches the release button 12 by the touch sensor, it is highly likely that the user is in the shooting state, and thus the backlight 13a is controlled to be turned on. By doing so, the power of the camera as proposed in the above-mentioned Patent Document 1 is kept supplied until the predetermined time elapses, or even if no image is taken. Compared with a technique in which power is supplied to the liquid crystal monitor in a state where the grip portion is held, power consumption can be sufficiently reduced.

  FIG. 9 is a diagram illustrating a procedure of a backlight lighting control method applied to the digital camera of the first embodiment.

  First, in step S1, the state of the touch sensor is detected. Next, in step S2, it is determined whether or not the finger is touching the release button 12. If it is determined that the finger is touching the release button 12, the process proceeds to step S3. In step S3, the backlight 13a is turned on and this procedure ends. On the other hand, if it is determined that the finger is not touching the release button 12, the process proceeds to step S4. In step S4, the backlight 13a is turned off and this procedure ends.

  FIG. 10 is a diagram showing an internal configuration of a digital camera which is the second embodiment of the photographing apparatus of the present invention.

  The external view of the digital camera of the second embodiment is the same as the external view of the digital camera 1 of the first embodiment, and is not shown.

  Compared with the digital camera 1 of the first embodiment, the digital camera 2 of the second embodiment shown in FIG. 10 has a release button provided with a touch sensor having an electrical contact described with reference to FIGS. Instead of 12, the first stage click feeling is provided with an electrical contact that detects a half-pressed state, and the second stage click feeling is provided with an electrical contact that detects a full-pressed state. A release button 212 employing a two-stage switch configuration is provided.

  Further, the digital camera 2 includes an angular velocity sensor 211 that detects whether or not the digital camera 2 is stationary, and whether or not the digital camera 2 is detected to be stationary by the angular velocity sensor 211. The lighting control means 230 for turning on or off the backlight 13a is provided.

  In many cases, the user takes a picture with the digital camera 2 stationary. Since the digital camera 2 according to the second embodiment controls the backlight 13a to be turned off when the angular velocity sensor 211 detects that the digital camera 2 is not stationary, power consumption can be reduced. . On the other hand, when it is detected by the angular velocity sensor 211 that the digital camera 2 is stationary, it is highly likely that the user is in a shooting state, and thus the backlight 13a is controlled to be turned on. By controlling in this way, power consumption can be sufficiently reduced.

  FIG. 11 is a diagram showing a procedure of a backlight lighting control method applied to the digital camera shown in FIG.

  First, in step S11, the state of the angular velocity sensor 211 is detected. Next, in step S12, it is determined whether or not the user is stationary (whether or not the digital camera 2 is stationary). If it is determined that the user is stationary, the process proceeds to step S13. In step S13, the backlight 13a is turned on and the procedure ends. On the other hand, if it is determined that the user is not stationary, the process proceeds to step S14. In step S14, the backlight 13a is turned off and this procedure ends.

  FIG. 12 is a diagram showing an internal configuration of a digital camera which is the third embodiment of the photographing apparatus of the present invention.

  The external view of the digital camera of the third embodiment is also the same as the external view of the digital camera 1 of the first embodiment, and is not shown.

  The digital camera 3 of the third embodiment shown in FIG. 12 includes a face detection unit 311 that detects a face in a subject based on an image signal obtained by the CCD 114, and whether or not a face is detected by the face detection unit 311. Accordingly, lighting control means 330 for turning on or off the backlight 13a of the liquid crystal monitor 13 is provided.

  When photographing a subject with the digital camera 3, if a face in the subject is detected, the user is likely to be in the photographing state. Since the digital camera 3 according to the third embodiment controls the backlight 13a to be turned off when a face is not detected by the face detection unit 311, power consumption can be reduced. On the other hand, if a face is detected, the user is likely to be in the shooting state, so control is performed to turn on the backlight 13a. By controlling in this way, power consumption can be sufficiently reduced.

  FIG. 13 is a diagram showing a procedure of a backlight lighting control method applied to the digital camera shown in FIG.

  First, in step S21, face detection is executed. Next, in step S22, it is determined whether or not a face has been detected. If it is determined that a face has been detected, the process proceeds to step S23. In step S23, the backlight 13a is turned on and this procedure is terminated. On the other hand, if it is determined that no face is detected, the process proceeds to step S24. In step S24, the backlight 13a is turned off and this procedure ends.

  FIG. 14 is a diagram showing an internal configuration of a digital camera which is the fourth embodiment of the photographing apparatus of the present invention.

  The external view of the digital camera of the fourth embodiment is also the same as the external view of the digital camera 1 of the first embodiment, and is not shown.

  In the digital camera 4 of the fourth embodiment shown in FIG. 14, brightness calculation means 411 that calculates an amount correlated with the brightness of the subject, and the brightness calculation means 411 causes the subject to have a predetermined brightness or more. Depending on whether or not the amount is calculated, lighting control means 430 for turning on or off the backlight 13a of the liquid crystal monitor 13 is provided. Here, the amount having a predetermined brightness or more calculated by the brightness calculation means 411 is calculated by integrating R, G, and B pixels. In addition to these R, G, and B pixels, an amount having a predetermined brightness or more may be calculated by integrating luminance and color differences.

  When shooting is not performed, it is often the amount of brightness that does not make sense as a subject (amount having a brightness less than a predetermined value). On the other hand, when the subject has an amount having a predetermined brightness or more, it is highly likely that the user is in a shooting state. Since the digital camera 4 according to the fourth embodiment controls the backlight 13a to be turned off when the subject has an amount less than a predetermined brightness, the power consumption can be reduced. On the other hand, if the subject has an amount of brightness that is greater than or equal to a predetermined level, there is a high possibility that the subject is in a shooting state, so control is performed so that the backlight 13a is turned on. By controlling in this way, power consumption can be sufficiently reduced.

  FIG. 15 is a diagram showing a procedure of a backlight lighting control method applied to the digital camera shown in FIG.

  First, in step S31, brightness is calculated. Next, in step S32, it is determined whether or not the brightness is a predetermined value or more. If it is determined that the brightness is equal to or greater than the predetermined value, the process proceeds to step S33. In step S33, the backlight 13a is turned on and this procedure is terminated. On the other hand, if it is determined that the brightness is less than the predetermined value, the process proceeds to step S34. In step S34, the backlight 13a is turned off and this procedure ends.

  FIG. 16 is a diagram showing an internal configuration of a digital camera which is the fifth embodiment of the photographing apparatus of the present invention.

  The external view of the digital camera of the fifth embodiment is also the same as the external view of the digital camera 1 of the first embodiment, and is not shown.

  In the digital camera 5 of the fifth embodiment shown in FIG. 16, a shutter speed calculation unit 511 that calculates a shutter speed at the time of shooting, and whether or not a shutter speed faster than a predetermined speed is calculated by the shutter speed calculation unit 511. Accordingly, lighting control means 530 for turning on or off the backlight 13a of the liquid crystal monitor 13 is provided.

  When the field luminance is dark, it is difficult to visually recognize the through image displayed on the liquid crystal monitor 13 even when the backlight 13a is turned on. In such a case, a shutter speed that is less than a predetermined speed is calculated. Since the digital camera 5 according to the fifth embodiment controls the backlight 13a to be turned off when a shutter speed less than a predetermined speed is calculated, the power consumption can be reduced. On the other hand, when the shutter speed faster than the predetermined value is calculated, the field brightness is bright, and thus the backlight 13a is controlled to be turned on. By controlling in this way, power consumption can be sufficiently reduced. The digital camera 5 also has an effect of allowing the user to know that camera shake is likely to occur because the backlight 13a is turned off when shooting is performed at a shutter speed less than a predetermined speed.

  FIG. 17 is a diagram showing a procedure of a backlight lighting control method applied to the digital camera shown in FIG.

  First, in step S41, the shutter speed is calculated. Next, in step S42, it is determined whether the shutter speed is equal to or higher than a predetermined value. If it is determined that the shutter speed is greater than or equal to the predetermined value, the process proceeds to step S43. In step S43, the backlight 13a is turned on and the procedure ends. On the other hand, if it is determined that the shutter speed is less than the predetermined value, the process proceeds to step S44. In step S44, the backlight 13a is turned off and this procedure ends.

  FIG. 18 is a diagram showing an internal configuration of a digital camera which is the sixth embodiment of the photographing apparatus of the present invention.

  The external view of the digital camera of the sixth embodiment is also the same as the external view of the digital camera 1 of the first embodiment, and is not shown.

  In the digital camera 6 of the fifth embodiment shown in FIG. 18, the angular velocity sensor 211 and the face detection unit 311 described above, and the fact that the digital camera 6 is detected to be stationary by the angle sensor 211 and the face detection unit 311. The lighting control means 630 that turns on the backlight 13a when any one of the two conditions that the face is detected is satisfied and turns off the backlight 13a when any one of the two conditions is not satisfied is provided. It has been.

  Since the digital camera 6 according to the sixth embodiment is configured as described above, any one of the two conditions, that is, the condition that the digital camera 6 is stationary and the condition that the face is detected is satisfied. When not, the backlight 13a is controlled to be turned off. For this reason, power consumption can be reduced sufficiently. On the other hand, when either one of the two conditions is satisfied, the backlight 13a is controlled to be turned on. Thereby, when the digital camera 6 is stationary, a through image such as a landscape can be displayed on the liquid crystal monitor 13, and when a face is detected, an image representing the face can be displayed on the liquid crystal monitor 13.

  FIG. 19 is a diagram showing a procedure of a backlight lighting control method applied to the digital camera shown in FIG.

  First, in step S51, face detection is executed. Next, in step S52, it is determined whether or not a face has been detected. If it is determined that a face has been detected, the process proceeds to step S53. In step S53, the backlight 13a is turned on and this procedure ends.

  On the other hand, if it is determined that no face is detected, the process proceeds to step S54. In step S54, the state of the angular velocity sensor is detected. Next, in step S55, it is determined whether or not the user is stationary. When it is determined that the user is in a stationary state, the process proceeds to step S53 described above, the backlight 13a is turned on, and this procedure ends. On the other hand, if it is determined that the user is not stationary, the process proceeds to step S56. In step S56, the backlight 13a is turned off and this procedure ends.

  In the sixth embodiment, the backlight 13a is turned off when the digital camera 6 does not satisfy any one of the two conditions, that is, the condition where the digital camera 6 is stationary and the condition where the face is detected. In the example described above, the backlight 13a is turned on when any one of the conditions is satisfied. However, the present invention is not limited to this. The present invention is not limited to this. Multiple conditions are selected from the following conditions: the detection of a face, the amount that the subject has brightness greater than a predetermined level, and the calculation of a shutter speed that is faster than the predetermined level The backlight is turned off when any one of the plurality of conditions is not satisfied, and the backlight is turned on when any one of the plurality of conditions is satisfied. As long as it lights up the site.

  In each of the embodiments described above, the example of the CCD has been described as the image sensor according to the present invention. However, the present invention is not limited to this, and the image sensor according to the present invention may be a CMOS sensor or an organic semiconductor. Good.

  In each of the above-described embodiments, the digital camera is described as an example of the photographing apparatus according to the present invention. However, the present invention is not limited thereto, and the photographing apparatus according to the present invention may be a camera mounted on a mobile phone, It may be a video camera or the like.

It is the perspective view which looked at the digital camera which is 1st Embodiment of the imaging device of this invention from diagonally upper right. FIG. 2 is a top view of the digital camera shown in FIG. 1 as viewed from above. It is the rear view which looked at the digital camera shown in FIG. 1 from the back. It is a figure which shows the internal structure of the digital camera shown in FIG. FIG. 5 is a cross-sectional structure diagram illustrating a state when the release button illustrated in FIG. 4 is not pressed. FIG. 5 is a cross-sectional structure diagram illustrating an initial state of pressing a release button illustrated in FIG. 4. FIG. 5 is a cross-sectional structure diagram illustrating a state in which pressing of the release button illustrated in FIG. FIG. 5 is a cross-sectional structure diagram illustrating a fully pressed state of a release button illustrated in FIG. 4. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera of 1st Embodiment. It is a figure which shows the internal structure of the digital camera which is 2nd Embodiment of the imaging device of this invention. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera shown in FIG. It is a figure which shows the internal structure of the digital camera which is 3rd Embodiment of the imaging device of this invention. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera shown in FIG. It is a figure which shows the internal structure of the digital camera which is 4th Embodiment of the imaging device of this invention. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera shown in FIG. It is a figure which shows the internal structure of the digital camera which is 5th Embodiment of the imaging device of this invention. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera shown in FIG. It is a figure which shows the internal structure of the digital camera which is 6th Embodiment of the imaging device of this invention. It is a figure which shows the procedure of the backlight lighting control method applied to the digital camera shown in FIG.

Explanation of symbols

1, 2, 3, 4, 5, 6 Digital camera 1a Camera body 1a_1, 1b_1 Hole 1b Inner panel 10 Lens barrel 10_1a Zoom lens 10_1b Iris 10_1c Focus lens 10_100 Operator group 11 Power button 12, 212 Release button 12_1 Shooting mode Dial 12_1A collar 12_2 pressing shaft 12_3 spring 12_5, 12_6 elastic body 12_7 conductive part 12_11 press receiving part 12_71, 12_81 wire 12_8 movable contact piece 12_82 convex 13 liquid crystal monitor 13a backlight 14 playback button 15F button 16F button 16F button 16F button 16F button 16F / Menu button 18 Zoom switch 19 DSP / BACK button 20 Flash light emitting unit 21 Photometric sensor 100 Recording media 111, 112, 113 Tadoraiba 114 CCD
115 Timing generator 116 CPU
117 CDSAMP
118 A / D Converter 119 Image Input Controller 120 Image Signal Processing Circuit 121 Compression Processing Circuit 122 Video Encoder 123 AF Detection Circuit 124 AE & AWB Detection Circuit 125 SDRAM
126 VRAM
127 Media controller 130, 230, 330, 430, 530, 630 Lighting control means 200 Control board 201 Fixed portion 211 Angular velocity sensor 311 Face detection means 411 Brightness calculation means 511 Shutter speed calculation means

Claims (12)

In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with backlight for displaying an image based on the image signal;
A release button for instructing shooting by pressing, and
A touch sensor for detecting that a finger touches the release button;
An imaging device comprising: lighting control means for turning on or off a backlight of the display screen according to whether or not a finger touches the release button by the touch sensor. In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with backlight for displaying an image based on the image signal;
An angular velocity sensor for detecting whether or not the photographing apparatus is stationary;
An imaging apparatus comprising lighting control means for turning on or off the backlight of the display screen according to whether or not the angular imaging sensor detects that the imaging apparatus is stationary. . In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with backlight for displaying an image based on the image signal;
Face detection means for detecting a face in a subject based on an image signal obtained by the imaging device;
An imaging apparatus comprising: lighting control means for turning on or off a backlight of the display screen according to whether or not a face is detected by the face detection means. In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with backlight for displaying an image based on the image signal;
Brightness calculation means for calculating an amount correlated with the brightness of the subject;
And a lighting control unit for turning on or off the backlight of the display screen according to whether or not the brightness calculation unit calculates an amount of the subject having a predetermined brightness or more. Shooting device to do. In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with backlight for displaying an image based on the image signal;
Shutter speed calculating means for calculating a shutter speed for shooting,
An imaging apparatus comprising: lighting control means for turning on or off the backlight of the display screen according to whether or not a shutter speed faster than a predetermined value is calculated by the shutter speed calculating means. In a photographing device that forms an image signal by imaging a subject on an image sensor,
A display screen with a backlight that displays an image based on the image signal is provided.
A release button that instructs shooting by pressing and a touch sensor that detects that a finger touches the release button, and the finger touches the release button by the touch sensor;
An angular velocity sensor that detects whether or not the photographing apparatus is stationary, and the angular velocity sensor detects that the photographing apparatus is stationary;
A face detecting means for detecting a face in a subject based on an image signal obtained by the image sensor, and the face is detected by the face detecting means;
Brightness calculating means for calculating an amount correlated with the brightness of the subject is provided, and the amount of the subject having a predetermined brightness or more is calculated by the brightness calculating means, and the shutter speed at the time of shooting is set. A shutter speed calculating means for calculating, and the shutter speed calculating means calculates a shutter speed faster than a predetermined value;
The backlight of the display screen is turned on when any one of the plurality of conditions when a plurality of conditions are selected from each of the conditions, and any of the plurality of conditions is selected. An imaging apparatus, comprising: a lighting control means for turning off the backlight when none is satisfied. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The photographing apparatus further includes a release button that instructs photographing by pressing, and a touch sensor that detects that a finger touches the release button,
A backlight lighting control method, wherein the backlight of the display screen is turned on or off depending on whether or not a finger touches the release button by the touch sensor. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The imaging device further includes an angular velocity sensor that detects whether the imaging device is stationary,
A backlight lighting control method, wherein the backlight of the display screen is turned on or off depending on whether or not the angular velocity sensor detects that the photographing apparatus is stationary. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The imaging apparatus further includes a face detection unit that detects a face in the subject based on an image signal obtained by the imaging element,
A backlight lighting control method, wherein the backlight of the display screen is turned on or off depending on whether or not a face is detected by the face detection means. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The photographing apparatus further includes brightness calculation means for calculating an amount correlated with the brightness of the subject,
A backlight lighting control method, wherein the backlight of the display screen is turned on or off, respectively, depending on whether or not the brightness calculation means has calculated an amount that the subject has a predetermined brightness or more. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The photographing apparatus further includes a shutter speed calculating means for calculating a shutter speed when photographing.
A backlight lighting control method, wherein the backlight of the display screen is turned on or off according to whether or not a shutter speed faster than a predetermined value is calculated by the shutter speed calculating means. The backlight lighting control method in an imaging device including an imaging element that receives an image of a subject and generates an image signal, and a display screen with a backlight that displays an image based on the image signal,
The photographing apparatus includes a release button that instructs photographing when pressed and a touch sensor that detects that a finger touches the release button, and the finger touches the release button by the touch sensor. ,
The imaging device includes an angular velocity sensor that detects whether the imaging device is stationary, and the angular velocity sensor detects that the imaging device is stationary;
The photographing apparatus includes a face detection unit that detects a face in a subject based on an image signal obtained by the image sensor, and the face is detected by the face detection unit;
The photographing apparatus includes brightness calculation means for calculating an amount correlated with the brightness of the subject, and the brightness calculation means calculates the amount that the subject has a brightness equal to or higher than a predetermined value;
The photographing apparatus includes a shutter speed calculating unit that calculates a shutter speed at the time of shooting, and a shutter speed that is faster than a predetermined value is calculated by the shutter speed calculating unit;
The backlight of the display screen is turned on when any one of the plurality of conditions when a plurality of conditions are selected from each of the conditions, and any of the plurality of conditions is selected. A backlight lighting control method, wherein the backlight is turned off when none is satisfied.

Images