JP2006135582A - Electronic camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic camera that allows exposure control even in the absence of a recording medium and securely gives notice of the absence of a recording medium. <P>SOLUTION: When a memory card 106 is not loaded in the electronic camera, a choice between an operation mode wherein photography is allowed and an operation mode wherein photography is inhibited can be made. In the mode wherein photography is allowed, exposure control is performed in response to shutter release operation and an operator is able to confirm states of shutter opening/closing driving and stop driving etc. In the mode wherein photography is inhibited, no response to shutter releasing operation is made. At this time, "-E-" is displayed on an external display device 12 and a finder display device 121 respectively and "NO CARD" is displayed on a superimposition display device 122, but a blinking display in the mode wherein photography is allowed or an illumination display in the mode wherein the photography is inhibited is made. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic camera capable of inserting and removing a recording medium such as a memory card.

  An electronic camera that prohibits release when there is no image recording destination is known (see Patent Document 1). Patent Document 1 discloses an electronic camera that displays a memory empty warning and prohibits release when no recording medium is loaded in the electronic camera and the built-in memory has no free space.

JP 2003-8965 A

  Even when there is no image recording destination in the electronic camera, it may be desired to permit release in order to check the exposure control of the electronic camera (shutter opening / closing drive, aperture drive, etc.). In the electronic camera disclosed in Patent Document 1, the exposure operation cannot be confirmed in a state where there is no image recording destination. When the release is permitted even when there is no image recording destination, the operator assumes that the image recording destination exists, and the release operation (shooting instruction) is performed even though the recording medium is not loaded. ).

An electronic camera according to a first aspect of the present invention detects the presence or absence of an image sensor, exposure control means for performing exposure control on the image sensor, and a data recording medium for recording image data based on an imaging signal output from the image sensor. A data recording medium detecting means, an informing means for informing that the absence of the data recording medium is detected by the data recording medium detecting means, an operation permission of the exposure control means when the absence of the data recording medium is detected, and It is characterized by comprising setting means for alternatively setting operation prohibition, and notification control means for changing the notification mode by the notification means when the exposure control means is permitted to operate and when the operation is prohibited.
According to a second aspect of the present invention, there is provided an electronic camera for detecting the presence or absence of an image sensor, exposure control means for controlling exposure to the image sensor, and a data recording medium for recording image data based on an imaging signal output from the image sensor. A data recording medium detecting means; a setting means for alternatively setting operation permission and prohibition of exposure control means when no data recording medium is detected by the data recording medium detecting means; and a data recording medium detecting means. And a notifying means for notifying that the absence of the data recording medium is detected when the absence of the data recording medium is detected and the operation of the exposure control means is permitted.
According to a fourth aspect of the present invention, there is provided an electronic camera that detects the presence or absence of an image sensor, exposure control means for controlling exposure to the image sensor, and a data recording medium for recording image data based on an image signal output from the image sensor. By a finder device, a data recording medium detection means, a first setting means for selectively setting the operation permission and operation prohibition of the exposure control means when the data recording medium detection means detects no data recording medium A superimpose display device for superimposing and displaying predetermined information superimposed on an optical image; a second setting means for selectively setting operation permission and prohibition of the superimpose display device; and data recording medium detection Means that no data recording medium is detected and the operation of the exposure control means is permitted. Operation permission / operation without data recording medium regardless of prohibition is characterized by comprising a display control means for causing the superimpose display device an indication that it is detected in the.

In the electronic camera according to the first aspect of the present invention, exposure control is permitted even when there is no recording medium. When notifying that there is no recording medium, the notification mode is determined depending on whether or not the exposure control operation is permitted. I tried to make them different. Accordingly, it is possible to reliably notify the user that there is no recording medium, and it is possible to prevent the user from mistaking that there is a recording medium and attempting to shoot.
In the electronic camera according to the second aspect of the invention, exposure control is permitted even when there is no recording medium, and when notifying that there is no recording medium, notification is performed when the operation of exposure control is permitted. I made it. Accordingly, it is possible to reliably notify the user that there is no recording medium, and it is possible to prevent the user from mistaking that there is a recording medium and attempting to shoot.
In the electronic camera according to the fourth aspect of the present invention, the exposure control is permitted even when there is no recording medium, and the superimpose display is used when notifying the absence of the recording medium in a state where the operation of the exposure control is permitted. Even if the operation of the device is prohibited, the superimpose display device notifies the user. Accordingly, it is possible to reliably notify the user that there is no recording medium, and it is possible to prevent the user from mistaking that there is a recording medium and attempting to shoot.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a top view of the electronic camera according to the first embodiment of the present invention. The electronic camera 1 is used with the interchangeable lens 3 attached to the camera body 2. The camera body 2 includes a main switch 11, a release button 15, an external display device 12, a main command dial 13, a subcommand dial 14, an image quality recording setting switch 16, and a custom setting switch 17. Yes.

  FIG. 2 is a block diagram showing a configuration of the electronic camera 1 of FIG. In FIG. 2, an image pickup device 102 such as a CCD picks up a subject image that has passed through the interchangeable lens 3 and outputs an image pickup signal. The drive circuit 103 generates a timing signal and supplies the drive signal to the image sensor 102. The imaging signal output from the imaging element 102 is sent to the imaging signal processing circuit 104.

  The imaging signal processing circuit 104 includes an A / D conversion circuit (not shown), and converts an analog imaging signal input from the imaging element 102 into a digital signal. The imaging signal processing circuit 104 further performs image processing such as white balance (WB) adjustment on the digital imaging signal, compression processing for compressing the image data after the image processing in a predetermined format, and decompression processing for expanding the compressed data. And so on. The recording circuit 105 records image data on a memory card 106 such as a flash memory. The memory card 106 is a card-type recording medium on which image data after image processing is recorded, and is configured to be detachable from the camera body 2. Whether the memory card 106 is loaded in the camera body 2 and the recording area in the memory card 106 are managed by the controller 107.

  The photometric device 120 detects the subject brightness and outputs a detection signal to the arithmetic circuit 101. The arithmetic circuit 101 performs exposure calculation using the luminance detection signal, and performs various calculations necessary for the electronic camera 1 and sequence control of camera operation. The imaging sequence device 119 drives and controls a sequence motor (not shown) according to a command from the arithmetic circuit 101, and performs shooting control such as up / down of a mirror (not shown), driving of a diaphragm (not shown), and charging of a shutter (not shown). Perform sequence control. The external display device 12 is constituted by, for example, a liquid crystal display disposed outside the housing of the camera body 2 and displays information indicating the setting contents of the electronic camera 1 with characters and marks. The drive circuit 118 drives the external display device 12, the finder display device 121, and the superimpose display device 122 in accordance with the command output from the arithmetic circuit 101.

  The viewfinder display device 121 is configured by a display element arranged so that display contents can be observed together with the subject image when the subject image (optical image) is observed from an eyepiece (not shown) of the viewfinder device. The superimpose display device 122 includes a display element that is arranged so as to overlay and display display information on a subject image (optical image).

  The release switch 114 outputs a release operation signal to the arithmetic circuit 101 in conjunction with the release button 15 in FIG. The on operation switch 113 outputs a power on operation signal to the arithmetic circuit 101 in conjunction with the main switch 11 of FIG. The image recording setting switch 16 outputs an operation signal related to the image recording capacity when recording image data to the memory card 106 to the arithmetic circuit 101. The custom setting switch 17 outputs an operation signal related to the custom setting to the arithmetic circuit 101.

  The operation related to the custom setting is an operation for alternatively setting permission / prohibition of photographing (exposure control) when a recording medium such as the memory card 106 is not loaded in the electronic camera 1 (camera body 2). It is.

  The main command dial 13 includes a switch 108 that outputs an A-phase operation signal and a switch 109 that outputs a B-phase operation signal, and outputs an operation signal in response to a dial rotation operation. The arithmetic circuit 101 detects the rotation direction of the main command dial 13 based on the phase difference between both signals of the A phase and the B phase. The subcommand dial 14 includes a switch 110 that outputs an A-phase operation signal and a switch 111 that outputs a B-phase operation signal, and outputs an operation signal in response to a dial rotation operation. The arithmetic circuit 101 detects the rotation direction of the subcommand dial 14 based on the phase difference between both signals of the A phase and the B phase.

When the main command dial 13 is rotated while the image recording setting switch 16 is operated, the arithmetic circuit 101 gives the following instruction to the imaging signal processing circuit 104 according to the rotation operation. That is, in order to change the recording image quality when image data is recorded on the memory card 106, the imaging signal processing circuit 104 is instructed whether or not to perform image processing and the compression rate at the time of compression processing. The recording image quality can be changed, for example, in the following five ways.
Image quality [1] “RAW” for recording image data without image processing
Image quality [2] “TIFF” for recording uncompressed image data after image processing
Image quality [3] "FINE" for recording image data after image processing at a compression ratio of about 1/4
Image quality [4] "NORMAL" which records image data after image processing at a compression rate of about 1/8
Image quality [5] “BASIC” for recording image data after image processing at a compression ratio of about 1/16

When the sub-command dial 14 is rotated while the image recording setting switch 16 is operated, the arithmetic circuit 101 gives the following instructions to the drive circuit 103 and the imaging signal processing circuit 104 according to the rotation operation. That is, it instructs the drive circuit 103 and the imaging signal processing circuit 104 to change the number of signals per screen (number of pixels per image) read from the imaging element 102. As a result, the number of recording pixels for recording image data on the memory card 106 is changed. For example, the number of recording pixels can be changed in the following three stages.
Number of pixels [1] “L size” with 2048 × 1536 dots constituting one screen
Number of pixels [2] “M size” with 1024 × 768 dots constituting one screen
Number of pixels [3] “S size” where the number of pixels constituting one screen is 640 × 480 dots

  When the sub-command dial 14 is rotated while the custom setting switch 17 is operated, the arithmetic circuit 101 performs shooting (exposure control operation) when the memory card 106 is not loaded in the electronic camera 1 according to the rotation operation. ) The selection of permission / prohibition is alternately changed.

  FIG. 3A is a diagram for explaining a display segment of the external display device 12. The pixel number segment 21 is used for display indicating the number of recorded pixels. The “L” constituting the pixel number segment 21 is lit when the number of pixels is [1]. “M” constituting the pixel number segment 21 is lit when the number of pixels is [2]. “S” constituting the pixel number segment 21 is lit when the number of pixels is [3].

  The image quality segment 22 is used for display indicating the recording image quality. “RAW” constituting the image quality segment 22 is lit when the image quality is [1]. “TIFF” constituting the image quality segment 22 is lit when the image quality is [2]. “FINE” constituting the image quality segment 22 is lit when the image quality is [3]. “NORM” constituting the image quality segment 22 is lit when the image quality is [4]. “BASIC” constituting the image quality segment 22 is lit when the image quality is [5].

  The segment 23 is used for displaying the shutter time (shutter speed) at the time of shooting. The segment 24 is used for displaying an aperture value at the time of shooting. The custom display segment 25 is used for custom setting display. The white balance display segment 26 is used for white balance display. In FIG. 3A, “A” indicates auto white balance (WB), and the mark on the right of “A” indicates manual WB. The mark on the right side of the “A” display indicates illumination light in the order of a light bulb, a fluorescent lamp, the sun, a flash device, cloudy weather, and shade. The numerical segment 27 is used for counter display such as the number of remaining frames. The numerical value segment 27 includes three sets of display elements composed of so-called seven segments, and is configured to display up to three digits in the case of numerical values.

  The external display device 12 has segments in addition to the segments described above, but the description of segments different from the characteristic configuration of the present invention is omitted.

  FIG. 3B is a diagram illustrating a display example of the finder display device 121 and the superimpose display device 122. The finder display device 121 displays the shutter speed, the aperture value, and the number of remaining frames, and the superimpose display device 122 superimposes and displays “NO CARD” on the finder image according to conditions described later.

  Processing of the camera operation performed by the arithmetic circuit 101 of the electronic camera 1 will be described with reference to the flowcharts of FIGS. The programs according to FIGS. 4 to 6 are activated and repeated when a battery (not shown) is loaded in the electronic camera 1. In step S1 of FIG. 4, the arithmetic circuit 101 performs the following initial settings. That is, the image quality parameter Q is set to 4, the pixel number parameter S is set to 1, and the custom flag R is set to 0, and the process proceeds to step S2.

  Here, the image quality parameter Q is a parameter in which Q = 1 to 5 is set corresponding to the above-described recording image quality [1] to [5]. In the initial setting, the recording image quality is set to “NORMAL”. The pixel number parameter S is a parameter in which S = 1 to 3 is set corresponding to the recording pixel numbers [1] to [3] described above. In the initial setting, the number of recording pixels is set to “L size”.

  The custom flag R is set to 0 when the photographing (exposure control operation) is prohibited when the memory card 106 is not loaded in the electronic camera 1 according to the custom setting described above, and the memory card 106 is in the electronic camera 1. This flag is set to 1 when it is set to allow photographing (exposure control operation) when it is not loaded. In the initial setting, the custom flag R is set to 0, and photographing (exposure control operation) when the memory card 106 is not loaded in the electronic camera 1 is prohibited.

  In step S2, the arithmetic circuit 101 determines whether or not the power switch is turned on. The arithmetic operation circuit 101 makes an affirmative decision in step S2 when the power-on operation signal is input from the on-operation switch 113 and proceeds to step S3. If the power-on operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S2. Then, the process proceeds to step S31 in FIG. The process proceeds to step S3 when the main switch 11 (FIG. 1) of the electronic camera 1 is turned on, and the process proceeds to step S31 when the main switch 11 (FIG. 1) of the electronic camera 1 is turned off. is there.

  In step S3, the arithmetic circuit 101 performs a setting process and proceeds to step S4. Details of the setting process will be described later. In step S4, the arithmetic circuit 101 performs photometry for calculating subject luminance based on the detection signal input from the photometry device 120, and the process proceeds to step S5. In step S5, the arithmetic circuit 101 performs a predetermined exposure calculation process and proceeds to step S6.

  In step S6, the arithmetic operation circuit 101 determines whether or not the power switch is turned on. The arithmetic operation circuit 101 makes an affirmative decision in step S6 when the power-on operation signal is input from the on-operation switch 113 and proceeds to step S7. If the power-on operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S6. Then, the process proceeds to step S31 in FIG.

  In step S7, the arithmetic circuit 101 outputs a command to the controller 107 to access the memory card 106, and the process proceeds to step S8. In step S8, the arithmetic circuit 101 determines whether or not the memory card 106 is loaded in the camera. The arithmetic circuit 101 makes an affirmative decision in step S8 when the loading of the memory card 106 is detected by the above access by the controller 107, and proceeds to step S9. If the loading of the memory card 106 is not detected, the arithmetic circuit 101 denies step S8. Determine and proceed to step S17.

  In step S9, the arithmetic operation circuit 101 sets the unrecorded area in the unrecorded area according to the recording capacity (remaining capacity) of the unrecorded area of the memory card 106 detected by the controller 107, the number of recorded pixels set in the electronic camera 1, and the recorded image quality. The number of frames that can be recorded, that is, the number N of remaining frames is calculated, and the process proceeds to step S10. The remaining frame number N is obtained by dividing the remaining capacity by the image recording capacity per image. The number N of remaining frames changes regardless of either the number of recording pixels or the recording image quality.

  In step S10, the arithmetic circuit 101 outputs a command to the drive circuit 118, and displays the value of the number of remaining frames N, the shooting information of the shutter time and aperture value, the recording image quality, the display indicating the number of recorded pixels, and the like. And the shooting information of the remaining frame number N, the shutter time, and the aperture value are displayed on the finder display device 121, and the process proceeds to step S11. FIG. 7 is a diagram illustrating a display example of the external display device 12. In FIG. 7, the segment 21 and the segment 22 indicate that the number of recording pixels is “L size” and the recording image quality is “RAW”. The segment 26 is lit and displayed as being set to auto WB, and the numerical value segment 27 is lit and displayed that the remaining frame number N is “10”.

  In step S11, the arithmetic circuit 101 determines whether or not the power switch is turned on. The arithmetic operation circuit 101 makes an affirmative decision in step S11 when the power-on operation signal is input from the on-operation switch 113 and proceeds to step S12. If the power-on operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S11. Then, the process proceeds to step S31 in FIG.

  In step S12, the arithmetic operation circuit 101 determines whether or not a release operation has been performed. When the release operation signal is input from the release switch 114, the arithmetic operation circuit 101 makes an affirmative determination in step S12 and proceeds to step S13. When the release operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S12 and returns to step S2. .

  In step S13, the arithmetic operation circuit 101 causes the drive circuit 103 to start driving the image sensor 102 and outputs a command to the imaging sequence device 119 to perform exposure control such as aperture control (not shown) and shutter control (not shown). Then, the process proceeds to step S14. As a result, the image sensor 102 is exposed, and the image sensor 102 accumulates charges for a predetermined time according to the intensity of the subject light incident on the imaging surface. In step S <b> 14, the arithmetic circuit 101 outputs a command to the drive circuit 103, reads an imaging signal having the number of pixels corresponding to the parameter S from the imaging element 102, and proceeds to step S <b> 15.

  In step S15, the arithmetic operation circuit 101 instructs the image pickup signal processing circuit 104 to perform image signal processing, and proceeds to step S16. If Q = 1 (recording image quality is “RAW”), step S15 is skipped and the process proceeds to step S16. In step S <b> 16, the arithmetic circuit 101 instructs the imaging signal processing circuit 104 to perform compression processing at a compression rate according to the parameter Q, and records the image data after the compression processing on the memory card 106. To instruct. Note that when Q = 1 (recording image quality is “RAW”) or Q = 2 (recording image quality is “TIFF”), uncompressed data is recorded, so the compression process is omitted.

  When the recording of the image data on the memory card 106 is completed, the arithmetic circuit 101 returns to step S2 and ends a series of photographing processes. When the photographing process is completed, the process shown in FIG. 4 is repeated, so that the display indicating the number N of remaining frames is updated every time one frame is recorded.

  In step S <b> 17 that proceeds after making a negative determination in step S <b> 8 described above, the arithmetic operation circuit 101 determines whether or not the custom flag R = 0. The arithmetic operation circuit 101 makes an affirmative decision in step S17 and proceeds to step S23 when R = 0 (photographing (exposure control operation) in a state where the memory card 106 is not loaded in the electronic camera 1 is prohibited). , R = 1 (photographing (exposure control operation) in a state where the memory card 106 is not loaded in the electronic camera 1 is permitted), a negative determination is made in step S17, and the process proceeds to step S18.

  In step S18, the arithmetic operation circuit 101 outputs a command to the drive circuit 118 to cause the external display device 12, the finder display device 121 and the superimpose display device 122 to display that the memory card 106 is not loaded. Proceed to S19. When the custom flag R = 1, a display indicating that the memory card 106 is not loaded is performed as follows. On the external display device 12, “−E−” is blinked and displayed on the finder display device 121 by the numeric segment 27 and “−E−” is blinked on the finder display device 121. “NO CARD” is displayed blinking on the superimpose display device 122.

  In step S19, the arithmetic operation circuit 101 outputs a command to the drive circuit 118 to cause the external display device 12 and the viewfinder display device 121 to display shooting information such as shutter time and aperture value. Then, a display indicating the number of recorded pixels is displayed, and the process proceeds to step S20. FIG. 8 is a diagram illustrating a display example of the external display device 12. In FIG. 8, “−E−” indicating that the memory card 106 is not loaded is blinked by the numerical segment 27.

  In step S20, the arithmetic circuit 101 determines whether or not the power switch is turned on. The arithmetic operation circuit 101 makes an affirmative decision in step S20 when the power-on operation signal is input from the on-operation switch 113 and proceeds to step S21. If the power-on operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S20. Then, the process proceeds to step S31 in FIG.

  In step S21, the arithmetic operation circuit 101 determines whether or not a release operation has been performed. When the release operation signal is input from the release switch 114, the arithmetic operation circuit 101 makes an affirmative determination in step S21 and proceeds to step S22. When the release operation signal is not input, the arithmetic circuit 101 makes a negative determination in step S21 and returns to step S2. .

  In step S22, the arithmetic circuit 101 outputs a command to the photographing sequence device 119, performs exposure control such as aperture control (not shown) and shutter control (not shown), and returns to step S2. Note that when the memory card 106 is not loaded, the image sensor 102 is not driven and the image data is not recorded.

  In step S23 that proceeds after making an affirmative determination in step S17 described above, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, and the memory card 106 is not loaded in the external display device 12, the finder display device 121, and the superimpose display device 122. Is displayed to return to step S2. When the custom flag R = 0, the display indicating that the memory card 106 is not loaded is performed as follows. On the external display device 12, “−E−” is lit and displayed by the numerical segment 27, and “−E−” is also lit and displayed on the finder display device 121. “NO CARD” is lit on the superimpose display device 122. A display example of the external display device 12 in this case is illustrated in the same manner as in FIG. 8 except that “−E−” is lit and displayed by the numerical segment 27 in the case of step S18.

  The process according to FIG. 5 is a process performed when the power switch is turned off. Even when the main switch 11 (FIG. 1) is turned off, the electronic camera according to the present embodiment is connected to the arithmetic circuit 101, the controller 107, the memory card 106, the drive circuit 118, and the external display device 12 from a battery (not shown). Each is configured to be supplied with power.

  In step S31 of FIG. 5, the arithmetic operation circuit 101 outputs a command to the controller 107 to access the memory card 106, and proceeds to step S32. In step S <b> 32, the arithmetic circuit 101 determines whether or not the memory card 106 is loaded in the electronic camera 1. The arithmetic operation circuit 101 makes an affirmative decision in step S32 when the loading of the memory card 106 is detected by the access by the controller 107 and proceeds to step S33. If no loading of the memory card 106 is detected, the operation circuit 101 makes a negative decision in step S32. Then, the process proceeds to step S36.

  In step S33, the arithmetic operation circuit 101 sets the unrecorded area in the unrecorded area according to the recording capacity (remaining capacity) of the unrecorded area of the memory card 106 detected by the controller 107, the number of recording pixels set in the electronic camera 1, and the recorded image quality. The number N of recordable remaining frames is calculated, and the process proceeds to step S34.

  In step S34, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, displays the value of the remaining frame number N on the external display device 12, and proceeds to step S35.

  In step S35, the arithmetic circuit 101 determines whether or not the power switch is turned on. The arithmetic operation circuit 101 makes an affirmative decision in step S35 when the power-on operation signal is input from the on-operation switch 113 and proceeds to step S3 in FIG. 3, and the power-on operation signal is not input from the on-operation switch 113. In this case, a negative determination is made in step S35, and the process returns to step S31.

  On the other hand, in step S36, which proceeds after making a negative determination in step S32, the arithmetic operation circuit 101 outputs a command to the drive circuit 118 to cause the external display device 12 to display that the memory card 106 is not loaded, and in step S35. Proceed to As a result, “−E−” is lit on the external display device 12 by the segment 27 for numerical values.

  Details of the setting process will be described with reference to the flowchart of FIG. In step S101, the arithmetic operation circuit 101 determines whether or not the image recording setting switch 16 has been pressed. The arithmetic operation circuit 101 makes an affirmative decision in step S101 when an operation signal is input from the image recording setting switch 16, and proceeds to step S102. If an operation signal is not input from the image recording setting switch 16, the arithmetic circuit 101 proceeds to step S101. Is negatively determined, and the process proceeds to step S126.

  In step S102, the arithmetic operation circuit 101 determines whether or not the main command dial 13 has been rotated counterclockwise. When the operation signal indicating counterclockwise rotation is input from the switches 108 and 109 of the main command dial 13, the arithmetic operation circuit 101 makes an affirmative decision in step S102 and proceeds to step S103, and the operation signal indicating counterclockwise rotation is not input. In this case, a negative determination is made in step S102, and the process proceeds to step S106.

  In step S103, the arithmetic operation circuit 101 makes a decision as to whether or not parameter Q = 5. If Q = 5 (recording image quality is BASIC), the arithmetic operation circuit 101 makes an affirmative decision in step S103 and proceeds to step S105. If Q ≠ 5, the operation circuit 101 makes a negative decision in step S103 and proceeds to step S104. In step S104, the arithmetic operation circuit 101 adds 1 to Q and proceeds to step S118. In step S105, the arithmetic operation circuit 101 sets Q to 1 before proceeding to step S118. Since Q = 1 is set next to Q = 5 during counterclockwise rotation, the value of Q is set cyclically as 1 → 2 → 3 → 4 → 5 → 1 → 2.

  In step S106, the arithmetic operation circuit 101 determines whether or not the main command dial 13 has been rotated clockwise. The arithmetic operation circuit 101 makes an affirmative decision in step S106 when an operation signal indicating clockwise rotation is input from the switches 108 and 109 of the main command dial 13 and proceeds to step S107, and when an operation signal indicating clockwise rotation is not input. Makes a negative determination in step S106 and proceeds to step S110.

  In step S107, the arithmetic circuit 101 determines whether or not the parameter Q = 1. The arithmetic operation circuit 101 makes an affirmative decision in step S107 when Q = 1 (recording image quality is RAW), and proceeds to step S109. If Q ≠ 1, it makes a negative decision in step S107 and proceeds to step S108. In step S108, the arithmetic operation circuit 101 subtracts 1 from Q and proceeds to step S118. In step S109, the arithmetic operation circuit 101 sets 5 for Q and proceeds to step S118. Since Q = 1 is set after Q = 1 at the time of clockwise rotation, the value of Q is set cyclically as 5 → 4 → 3 → 2 → 1 → 5 → 4.

  In step S110, the arithmetic circuit 101 determines whether or not the subcommand dial 14 has been rotated clockwise. The arithmetic operation circuit 101 makes an affirmative decision in step S110 when an operation signal indicating clockwise rotation is input from the switches 110 and 111 of the subcommand dial 14 and proceeds to step S111, and when an operation signal indicating clockwise rotation is not input. Makes a negative determination in step S110 and proceeds to step S114.

  In step S111, the arithmetic circuit 101 determines whether or not the parameter S = 3. The arithmetic operation circuit 101 makes an affirmative decision in step S111 when S = 3 (the number of recording pixels is L size), and proceeds to step S113. If S ≠ 3, the operation circuit 101 makes a negative decision in step S111 and proceeds to step S112. In step S112, the arithmetic operation circuit 101 adds 1 to S and proceeds to step S118. In step S113, the arithmetic operation circuit 101 sets S to 1 before proceeding to step S118. Since S = 1 is set next to S = 3 during the clockwise rotation, the value of S is set cyclically as 1 → 2 → 3 → 1 → 2.

  In step S114, the arithmetic circuit 101 determines whether or not the subcommand dial 14 has been rotated counterclockwise. The arithmetic operation circuit 101 makes an affirmative decision in step S114 when an operation signal indicating counterclockwise rotation is input from the switches 110 and 111 of the subcommand dial 14, and proceeds to step S115, and an operation signal indicating counterclockwise rotation is not input. In this case, a negative determination is made in step S114, and the process proceeds to step S118.

  In step S115, the arithmetic operation circuit 101 makes a decision as to whether or not parameter S = 1. The arithmetic operation circuit 101 makes an affirmative decision in step S115 when S = 1 (the number of recording pixels is S size), and proceeds to step S117. If S ≠ 1, it makes a negative decision in step S115 and proceeds to step S116. In step S116, the arithmetic operation circuit 101 subtracts 1 from S and proceeds to step S118. In step S117, the arithmetic operation circuit 101 sets S to 3 before proceeding to step S118. Since S = 1 is set after S = 1 during counterclockwise rotation, the value of S is set cyclically as 3 → 2 → 1 → 3 → 2.

  In step S118, the arithmetic circuit 101 outputs a command to the controller 107 to access the memory card 106, and proceeds to step S119. In step S119, the arithmetic circuit 101 determines whether or not the memory card 106 is loaded in the electronic camera 1. The arithmetic operation circuit 101 makes an affirmative decision in step S119 when the loading of the memory card 106 is detected by the access by the controller 107, and proceeds to step S120. If the loading of the memory card 106 is not detected, the operation circuit 101 makes a negative decision in step S119. Then, the process proceeds to step S125.

  In step S120, the arithmetic operation circuit 101 sets the unrecorded area in the unrecorded area according to the recording capacity (remaining capacity) of the unrecorded area of the memory card 106 detected by the controller 107, the number of recording pixels set in the electronic camera 1, and the recorded image quality. The number N of recordable remaining frames is calculated, and the process proceeds to step S121.

  In step S121, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, displays the value of the remaining frame number N on the external display device 12, and proceeds to step S122. In step S122, the arithmetic operation circuit 101 outputs a command to the drive circuit 118 to cause the external display device 12 to display a display showing the recording image quality and the number of recording pixels, and then proceeds to step S123.

  In step S123, the arithmetic operation circuit 101 determines whether or not the image recording setting switch 16 has been pressed. The arithmetic operation circuit 101 makes an affirmative decision in step S123 when an operation signal is input from the image recording setting switch 16, and returns to step S102. If an operation signal is not input from the image recording setting switch 16, the arithmetic circuit 101 returns to step S123. Is negatively determined, the process of FIG. 6 is terminated, and the process proceeds to step S4 of FIG.

  In step S125, which proceeds after making a negative determination in step S119 described above, the arithmetic circuit 101 outputs a command to the drive circuit 118 to display on the external display device 12 that the memory card 106 is not loaded, and then proceeds to step S122. . As a result, “−E−” is lit and displayed on the external display device 12 by the segment 27 for numerical values.

  In step S126, which proceeds after making a negative determination in step S101 described above, the arithmetic operation circuit 101 determines whether or not the custom setting switch 17 has been pressed. The arithmetic operation circuit 101 makes an affirmative decision in step S126 when an operation signal is input from the custom setting switch 17, and proceeds to step S127. If an operation signal is not input from the custom setting switch 17, the arithmetic circuit 101 makes a negative determination in step S126. Then, the process of FIG. 6 is terminated and the process proceeds to step S4 of FIG.

  In step S127, the arithmetic operation circuit 101 makes a decision as to whether or not the sub-command dial 14 has been rotated. The arithmetic operation circuit 101 makes an affirmative decision in step S127 when an operation signal is input from the switches 110 and 111 of the subcommand dial 14 and proceeds to step S128. If an operation signal indicating rotation is not input, the operation circuit 101 denies step S127. Determine and proceed to step S131.

  In step S128, the arithmetic operation circuit 101 makes a decision as to whether or not the custom flag R = 0. The arithmetic operation circuit 101 makes an affirmative decision in step S128 when R = 0 (photographing (exposure control operation) when the memory card 106 is not loaded is prohibited), proceeds to step S129, and R = 1 (memory card 106 not yet loaded). In the case of photography (exposure control operation is permitted in loading), a negative determination is made in step S128, and the process proceeds to step S130.

  In step S129, the arithmetic operation circuit 101 sets the custom flag R to 1 before proceeding to step S131. In step S130, the arithmetic operation circuit 101 sets the custom flag R to 0 before proceeding to step S131.

  In step S131, the arithmetic circuit 101 outputs a command to the drive circuit 118, causes the external display device 12 to display the custom setting display and the value of the custom flag R, and returns to step S126. As a result, the value of the flag R (0 or 1) is displayed on the external display device 12 by the segment 24, and “CSM” is displayed by the segment 25.

In the electronic camera according to the first embodiment described above, the following operational effects can be obtained.
(1) When the memory card 106 is not loaded in the electronic camera 1, an operation mode that permits shooting (exposure control operation) of the electronic camera 1 and an operation mode that prohibits shooting (exposure control operation) are selected. Configured to be possible. In the operation mode that permits photographing (custom flag R = 1), even if the memory card 106 is not loaded, exposure control (step S22) such as aperture control and shutter control is performed in accordance with the release operation, whereby the operator It is possible to check the opening / closing driving of the shutter and the driving state of the diaphragm. In the operation mode in which shooting is prohibited (custom flag R = 0), if the memory card 106 is not loaded, the process does not proceed to a process for determining whether or not a release operation is performed, and therefore unnecessary driving such as a shutter or an aperture is not performed. .

(2) In the operation mode (custom flag R = 1) in which shooting is permitted when the memory card 106 is not loaded, “−E−” is displayed blinking on the external display device 12 and the viewfinder display device 121, respectively. “NO CARD” is flashed on the impose display device 122 (step S18) to notify the operator that the memory card 106 is not loaded. Accordingly, since the unloading of the memory card 106 is reliably notified in a state where photographing is permitted, the operator mistakes that the memory card 106 as the image recording destination exists, and the memory card 106 is not loaded. It is possible to prevent the operator from continuing the release operation (shooting instruction) despite being present.

(3) In the operation mode (custom flag R = 0) in which shooting is prohibited when the memory card 106 is not loaded, “−E−” is displayed on the external display device 12 and the finder display device 121, and the super "NO CARD" is lit on the impose display device 122 (step S23) to notify the operator that the memory card 106 is not loaded. Therefore, it is notified to the operator that the image cannot be taken because the memory card 106 is not loaded (release operation is invalid), and it is possible to prevent the operator from misunderstanding that the electronic camera 1 has failed.

(4) Since the display mode is changed in (2) and (3) above, the fact that the memory card 106 is not loaded is distinguished by an operation mode that permits shooting and an operation mode that prohibits shooting. Can be notified. In particular, since the flashing display is performed in the operation mode permitting photographing, the display can be made conspicuous and the user can be surely notified.

(First modification)
In step S23 described above, the “NO CARD” lighting display by the superimpose display device 122 may be omitted. In this case, in the operation mode (custom flag R = 0) in which shooting is prohibited when the memory card 106 is not loaded, the superimpose display device 122 does not display, and the memory card 106 is unloaded. In the operation mode in which the camera is allowed (custom flag R = 1), “NO CARD” is blinked on the superimpose display device 122. It becomes easy for the operator to understand. In particular, since the flashing display is performed in the operation mode permitting photographing, the display can be made conspicuous and the user can be surely notified.

(Second modification)
In addition to the first modified example, “NO CARD” may be turned on by the superimpose display device 122 in step S18. In this case, in the operation mode (custom flag R = 0) in which shooting is prohibited when the memory card 106 is not loaded, the superimpose display device 122 does not display, and the memory card 106 is unloaded. In the operation mode in which the camera is permitted (custom flag R = 1), “NO CARD” is lit on the superimpose display device 122. Therefore, there is a difference in the notification mode between the operation mode in which shooting is permitted and the operation mode in which shooting is prohibited. It becomes easy for the operator to understand. In particular, since the lighting is displayed in the operation mode that permits photographing, the display can be noticed and the user can be surely notified.

(Third modification)
In addition to the first modification, “NO CARD” is displayed on the superimpose display device 122 in step S18, and “−E−” is displayed on the external display device 12 and the viewfinder display device 121. You may do it. Also in this case, in the operation mode (custom flag R = 0) in which photographing is prohibited when the memory card 106 is not loaded, the superimpose display device 122 does not display, and the memory card 106 is unloaded. In the operation mode in which the camera is permitted (custom flag R = 1), “NO CARD” is lit on the superimpose display device 122. It becomes easy for the operator to understand. In particular, since the lighting is displayed in the operation mode that permits photographing, the display can be noticed and the user can be surely notified.

  In the above description, the display indicating that the memory card 106 is not loaded is displayed on the external display device 12, the finder display device 121, and the superimpose display device 122, respectively, but it is not displayed on all three display devices. Alternatively, at least one may be displayed.

(Second embodiment)
In the second embodiment, the display on / off of the superimpose display device 122 is switchable. Compared to the first embodiment, the initial setting in step S1 (FIG. 4), the processing after affirmative determination in step S17 (FIG. 4), and the setting processing according to FIG. 6 are different. To do.

  The arithmetic circuit 101 performs initial setting as follows instead of step S1. That is, the image quality parameter Q is set to 4, the pixel number parameter S is set to 1, the custom flag R is set to 0, the superimpose setting display flag T is set to 0, and the custom parameter C is set to 1, and the process proceeds to step S2. . The image quality parameter Q, the pixel number parameter S, and the custom flag R are the same as in the first embodiment.

  The superimpose setting display flag T is set to 0 when the superimpose display device 122 is turned on so as to perform display by the custom setting, and is set to be off so that the superimpose display device 122 does not perform display. In this case, the flag is 1.

  The custom parameter C is a parameter representing a custom setting number. The value of the parameter C is 1 when the prohibition / permission of photographing in a state where the memory card 106 is not loaded is switched. In addition, the value of the parameter C when switching on / off the display by the superimpose display device 122 is 2.

  The arithmetic circuit 101 performs the processing according to the flowchart shown in FIG. 9 after making a positive determination in step S17 (FIG. 4). In step S17 of FIG. 9, the arithmetic operation circuit 101 performs step S17 when the custom flag R = 0 (photographing (exposure control operation) in a state where the memory card 106 is not loaded in the electronic camera 1 is prohibited). Is affirmed and the process proceeds to step S202. In the case of R = 1 (photographing (exposure control operation) in a state where the memory card 106 is not loaded in the electronic camera 1 is permitted), a negative determination is made in step S17, and the process proceeds to step S18 (FIG. 4). .

  In step S202, the arithmetic circuit 101 determines whether or not the superimpose setting display flag T = 0. The arithmetic operation circuit 101 makes an affirmative decision in step S202 when T = 0 (display by the superimpose display device 122 is set to ON), proceeds to step S23 (FIG. 4), and T = 1 (superimpose display device 122). In the case where the display is turned off), a negative determination is made in step S202 and the process proceeds to step S203.

  In step S203, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, causes the external display device 12 and the finder display device 121 to display that the memory card 106 is not loaded, and returns to step S2 (FIG. 4). . The display indicating that the memory card 106 is not loaded when the custom flag R = 0 is performed as follows. On the external display device 12, “−E−” is lit and displayed by the numerical segment 27, and “−E−” is also lit and displayed on the finder display device 121. Note that the display by the superimpose display device 122 is not performed.

  When a negative determination is made in step S17, the process proceeds to step S18 (FIG. 4), so regardless of the value of the superimpose setting display flag T (regardless of the display on / off setting by the superimpose display device 122), A display indicating that the memory card 106 is not loaded is displayed on the external display device 12, the finder display device 121, and the superimpose display device 122. That is, “NO CARD” flashes on the superimpose display device 122 even when the display is turned off.

  The arithmetic circuit 101 performs the processing of the flowchart shown in FIG. 10 after making a negative determination in step S101 (FIG. 6). In step S126 of FIG. 10, the arithmetic operation circuit 101 makes a decision as to whether or not the custom setting switch 17 has been pressed. The arithmetic operation circuit 101 makes an affirmative decision in step S126 when an operation signal is input from the custom setting switch 17, and proceeds to step S301. If an operation signal is not input from the custom setting switch 17, the arithmetic circuit 101 makes a negative determination in step S126. Then, the process of FIG. 10 is finished and the process proceeds to step S4 of FIG.

  In step S301, the arithmetic circuit 101 determines whether or not the custom parameter C = 1. The arithmetic operation circuit 101 makes an affirmative decision in step S301 and proceeds to step S302 when C = 1 (switching prohibition / permission of photographing when the memory card 106 is not loaded), and C ≠ 1 (superimpose). In the case of switching on / off of display by the display device 122), a negative determination is made in step S301, and the process proceeds to step S303.

  In step S302, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, causes the external display device 12 to display the custom setting display, the value of the custom parameter C, and the value of the custom flag R, and proceeds to step S304. As a result, the value of the flag R (0 or 1) is displayed on the external display device 12 by the segment 24, the value of the parameter C (1 in this case) is displayed by the segment 23, and “CSM” is displayed by the segment 25. .

  In step S303, the arithmetic operation circuit 101 outputs a command to the drive circuit 118, causes the external display device 12 to display the custom setting display, the value of the custom parameter C, and the value of the superimpose setting display flag T, and then proceeds to step S304. . As a result, the flag T (0 or 1) is displayed on the external display device 12 by the segment 24, the parameter C value (2 in this case) is displayed by the segment 23, and “CSM” is displayed by the segment 25. .

  In step S304, it is determined whether or not the main command dial 13 has been rotated. The arithmetic operation circuit 101 makes an affirmative decision in step S304 when an operation signal is input from the switches 108 and 109 of the main command dial 13 and proceeds to step S305. If an operation signal indicating rotation is not input, the operation circuit 101 denies step S304. Determine and proceed to step S308.

  In step S305, the arithmetic operation circuit 101 makes a decision as to whether or not the custom parameter C = 1. The arithmetic operation circuit 101 makes an affirmative decision in step S305 when C = 1 and proceeds to step S306. If C ≠ 1, the operation circuit 101 makes a negative decision in step S305 and proceeds to step S307.

  In step S306, the arithmetic operation circuit 101 sets 2 for the custom parameter C and returns to step S126. In step S307, the arithmetic operation circuit 101 sets 1 for the custom parameter C and returns to step S126.

  In step S308, the arithmetic operation circuit 101 determines whether or not the subcommand dial 14 has been rotated. The arithmetic operation circuit 101 makes an affirmative decision in step S308 when an operation signal is input from the switches 110 and 111 of the subcommand dial 14 and proceeds to step S309. If an operation signal indicating rotation is not input, the operation circuit 101 denies step S308. Determine and return to step S126.

  In step S309, the arithmetic operation circuit 101 makes a decision as to whether or not the custom parameter C = 1. The arithmetic operation circuit 101 makes an affirmative decision in step S309 when C = 1 and proceeds to step S310. If C ≠ 1, the operation circuit 101 makes a negative decision in step S309 and proceeds to step S313.

  In step S310, the arithmetic circuit 101 determines whether or not the custom flag R = 0. The arithmetic operation circuit 101 makes an affirmative decision in step S310 when R = 0 (photographing (exposure control operation) when the memory card 106 is not loaded is prohibited), and proceeds to step S311. R = 1 (memory card 106 not yet loaded) If shooting (exposure control operation during loading is permitted), a negative determination is made in step S310, and the process proceeds to step S312.

  In step S311, the arithmetic circuit 101 sets the custom flag R to 1 and returns to step S126. In step S312, the arithmetic operation circuit 101 sets the custom flag R to 0 and returns to step S126.

  In step S313, the arithmetic operation circuit 101 makes a decision as to whether or not the superimpose setting display flag T = 0. The arithmetic operation circuit 101 makes an affirmative decision in step S313 when T = 0 (the display by the superimpose display device 122 is set to ON), and proceeds to step S314, where T = 1 (by the superimpose display device 122). If the display is set to OFF), a negative determination is made in step S313, and the process proceeds to step S315.

  In step S314, the arithmetic operation circuit 101 sets the superimpose setting display flag T to 1 and returns to step S126. In step S315, the arithmetic operation circuit 101 sets the superimpose setting display flag T to 0 and returns to step S126.

  According to the second embodiment described above, when photographing (exposure control operation) in a state where the memory card 106 is not loaded in the electronic camera 1 is permitted (determination is negative in step S17 in FIG. 9). “NO CARD” flashes on the superimpose display device 122 regardless of the display on / off setting by the superimpose display device 122. Therefore, since the superimpose display device 122 always informs the operator that the memory card 106 is not loaded in a state where photographing is permitted, the operator mistakes that the memory card 106 that is the image recording destination exists. Even if the memory card 106 is not loaded, it is possible to prevent the operator from continuing the release operation (shooting instruction).

  In the above description, the example in which the memory card 106 is not loaded has been visually notified. The display contents “-E-” and “NO CARD” of each display device are display examples, and other characters, marks, lamps, etc. are turned on or blinked, or the display color is changed to change the notification mode. Change it.

  Instead of displaying visually using a display device, sound notification may be made by sound. In this case, the notification mode may be changed by changing the continuous sound, intermittent sound, sound frequency, or melody.

  Visual notification and auditory notification may be combined.

  Correspondence between each component in the claims and each component in the best mode for carrying out the invention will be described. The exposure control means is constituted by, for example, a photographing sequence device 119. The data recording medium is constituted by, for example, a memory card 106. The data recording medium detection unit, the setting unit, the notification control unit, the first setting unit, the second setting unit, and the display control unit are configured by an arithmetic circuit 101, for example. The notification means is constituted by, for example, the external display device 12, the finder display device 121, and the superimpose display device 122. In addition, the above description is an example to the last, and when interpreting invention, it is not limited to the correspondence of the component of said embodiment and the component of this invention at all.

1 is a top view of an electronic camera according to a first embodiment of the present invention. It is a block diagram which shows the structure of the electronic camera of FIG. (a) is a figure explaining the display segment of an external display apparatus, (b) is a figure which shows the example of a display of a finder display apparatus and a superimpose display apparatus. It is a flowchart explaining the process of the camera operation | movement performed with an arithmetic circuit. It is a flowchart explaining the process of the camera operation | movement performed with an arithmetic circuit. It is a flowchart explaining the detail of a setting process. It is a figure which shows the example of a display of an external display apparatus. It is a figure which shows the example of a display of an external display apparatus. It is a flowchart explaining the process of the camera operation | movement by 2nd embodiment. It is a flowchart explaining the setting process by 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electronic camera 12 ... External display apparatus 13 (108,109) ... Main command dial 14 (109,110) ... Subcommand dial 16 ... Image recording setting switch 17 ... Custom setting switch 21-27 ... Display segment 101 ... Arithmetic circuit 102: Image sensor 105 ... Recording circuit,
106 ... Memory card 113 ... On operation switch 114 ... Release switch,
118 ... Drive circuit 119 ... Shooting sequence device 121 ... Finder display device 122 ... Superimpose display device

Claims (4)

An image sensor;
Exposure control means for performing exposure control on the image sensor;
Data recording medium detection means for detecting the presence or absence of a data recording medium for recording image data based on the imaging signal output from the imaging element;
Informing means for informing the absence of the data recording medium when the data recording medium detecting means is detected;
A setting means for alternatively setting operation permission and operation prohibition of the exposure control means when the absence of the data recording medium is detected;
An electronic camera comprising: a notification control unit that changes a notification mode by the notification unit when the operation of the exposure control unit is permitted and when the operation is prohibited. An image sensor;
Exposure control means for performing exposure control on the image sensor;
Data recording medium detection means for detecting the presence or absence of a data recording medium for recording image data based on the imaging signal output from the imaging element;
Setting means for alternatively setting operation permission and operation prohibition of the exposure control means when the data recording medium detection means detects the absence of the data recording medium;
Informing means for informing that the absence of the data recording medium is detected when the absence of the data recording medium is detected by the data recording medium detecting means and the operation of the exposure control means is permitted. And an electronic camera. The electronic camera according to claim 1 or 2,
The notification means includes at least one of a display device disposed in a housing, a display device disposed in a finder, and a superimpose display device that superimposes and displays on a finder optical image. An electronic camera characterized by that. An image sensor;
Exposure control means for performing exposure control on the image sensor;
Data recording medium detection means for detecting the presence or absence of a data recording medium for recording image data based on the imaging signal output from the imaging element;
First setting means for alternatively setting operation permission and operation prohibition of the exposure control means when the absence of the data recording medium is detected by the data recording medium detection means;
A superimpose display device for superimposing and displaying predetermined information superimposed on an optical image by a finder device;
Second setting means for alternatively setting operation permission and operation prohibition of the superimpose display device;
When the data recording medium detecting means detects that no data recording medium is present and the operation of the exposure control means is permitted, no data recording medium is detected regardless of whether the operation of the superimpose display device is permitted or prohibited. An electronic camera comprising: display control means for causing the superimpose display device to perform display indicating detection.

Images