JP3127605B2 - Camera with monitor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for photographing a light image of a subject passing through a photographing lens, and more particularly to a display (monitor) such as an electronic viewfinder for monitoring a photographing screen. The present invention relates to a camera with a monitor that switches and displays still images.

[0002]

2. Description of the Related Art Conventionally, for example, an electronic viewfinder is attached to a normal camera capable of photographing on a silver halide film, an image at the time of photographing is temporarily stored, and immediately after photographing, the stored image is designated by a photographing preparation button. Japanese Patent Application Laid-Open Publication No. Sho 63-284527 proposes a display which is displayed on an electronic viewfinder for convenience of a photographer, for example, to enable confirmation of shooting timing and composition.

[0003] Further, as this kind of camera, there is a camera which stores continuous shot images in a continuous shooting mode, and which can automatically display still images one by one or a plurality of images on an electronic viewfinder after shooting. In addition, a camera that automatically displays a still image after shooting in the continuous shooting mode has also been proposed (JP-A-3-259232, JP-A-2-1014).
No. 41).

[0004]

Problems to be Solved by the Invention
The camera described in Japanese Patent No. 4527 is for displaying a still image in response to an instruction immediately after shooting, but does not describe a technique for switching a display mode of a shooting screen between a moving image and a still image. In particular, the present invention does not relate to switching of the display mode between a continuous shooting mode in which continuous shooting is automatically executed and a single shooting mode in which shooting can be performed each time.

[0005] The conventional camera described in the latter also does not relate to the technology of switching the display mode between continuous shooting / single shooting mode and before and after shooting. Furthermore, there is no description that a captured image is once stored and a still image can be displayed later as appropriate.

[0006] The present invention has been made in view of the above,
Before and after the continuous shooting / single shooting mode is selected or before and after shooting, a suitable moving image and still image are displayed according to the current state, and a monitor that enables the monitor display of the shot image in a preferable state is provided. The purpose is to provide a camera.

[0007]

According to a first aspect of the present invention, there is provided a camera for photographing a light image of a subject passing through a photographing lens, wherein the photographing means repeatedly photographs the light image of the subject passing through the photographing lens; Storage means for taking in an image signal of a subject picked up by the image pickup means at the time of shooting, display means capable of displaying an image, continuous shooting mode for automatically executing continuous shooting, and simple shooting mode for each shot and mode switching means for switching between photographing modes selectively, when single shooting mode is selected, leading to the display means an image signal stored in the storage means after the end of shooting is displayed still image, continuous shooting when the mode is selected, in which an image signal captured by the above <br/> SL imaging unit after each shot and a display control means for moving image display is guided to the display means.

[0008]

According to the first aspect of the present invention, the subject light image that has passed through the photographing lens is photographed on a recording medium such as a film according to a photographing instruction. The present camera is capable of selectively switching between a continuous shooting mode in which continuous shooting is automatically performed by a mode switching means and a single shooting mode in which shooting can be performed each time. The image at the time of shooting is taken into the storage means for the subject light image picked up by.

When the single shooting mode is selected by the display control means, the image signal stored in the storage means is guided to a display means such as an electronic viewfinder or a monitor after photographing is completed, and the still image display is performed. On the other hand, when the continuous shooting mode is selected, an image signal picked up by the image pickup means is guided to the display means and displayed as a moving image at the end of each photographing.

[0010]

2 to 4 show the external structure of a camera to which the present invention is applied. FIG. 2 is a front perspective view, FIG. 3 is a rear perspective view, and FIG. 4 is an enlarged view of a grip portion GP.

This camera comprises a camera body 20 and an integral or interchangeable taking lens unit 21. Further, a grip portion GP is formed at one of the left and right sides of the camera body 20 at a position where the photographer grips at the time of photographing.

Various operation members and other members are arranged on the upper surface of the camera body 20. 22 is a release button, metering and switch S ₁ is turned on for photographing preparation later in pushing the first stage, the exposure calculation and the operations such as AF is started, later release in pushing the second stage switch S ₂ is the exposure control operation is started by turning on for.

Reference numeral 23 denotes a slider for instructing switching between an automatic still image mode and a manual still image mode, which will be described later. The slider 23 is, for example, at the left position (the center position in FIG. 2).
Is in the automatic still image mode, and when in the opposite position, it is the manual still image mode.

Reference numeral 24 denotes a body display section composed of a liquid crystal panel or the like, which displays a shutter speed, an aperture value, and the like. Reference numeral 25 denotes an image memory 110 (see FIG.
The display operation member outputs an instruction signal for displaying the display data stored in the display 47 on a monitor 47 (see FIG. 6) including a color liquid crystal panel, which will be described later.

Reference numeral 26 denotes a display memory 11 in the camera body 20.
A memory change switch that is operated when changing the image signal stored in the image signals 1 and 112. The head of the camera body 20 has a connection structure to which a flash (not shown) can be attached as needed.

A preview switch 27 is provided at an appropriate position outside the taking lens unit 21. The preview switch 27 is an operation member for displaying on the monitor 47 a subject image captured through an aperture set to a control aperture value.

As shown in FIG. 3, a finder 28 as a monitor 47 is provided on an upper portion of the rear surface of the camera body 20. An eyepiece sensor 29 in which a light emitting element 291 such as an LED and a light receiving element 292 such as an SPC (silicon photocell) are arranged adjacent to the finder 28 is provided. This eyepiece sensor 29 is
This is for detecting whether or not the photographer is looking through the viewfinder, and the eyepiece can be detected by the light emitted from the light emitting element 291 being reflected by the face of the photographer who looked into the viewfinder and received by the light receiving element 292. It has become.

Reference numeral 30 denotes a line-of-sight operating member that sets (sets) and resets the line of sight of the photographer detected by the line-of-sight detection circuit 2 described later, that is, the line-of-sight area within the angle of view.

The outside of the grip portion GP is covered with a cover 31 made of elastic rubber. As shown in FIG. 4, conductive patterns 311 and 312 which are insulated from each other are arranged inside the grip portion GP. ing. Rubber 3 above
A conductive rubber (not shown) is arranged between the first conductive pattern 1 and the conductive patterns 311 and 312. And grip part GP
The conductive patterns 311 and 312 are electrically connected via conductive rubber by pressing the outer cover 31 with a hand to grip the camera. With this configuration, the grip section GP is adapted to function as a grip switch S _G. FIG. 5 is a diagram showing an internal structure related to the photographing lens 211 and an optical system in the camera body 20.

In the camera body 20, a taking lens 211 is provided.
A mirror 40 that can be moved up and down with respect to the optical axis L1 is disposed. The mirror 40 is a half-mirror composed of an ultra-thin pellicle mirror, and a part of the light beam that has passed through the photographing lens 211 passes through a micro optical system 41 such as a lens, a half mirror 42, a CCD 43 as an area sensor, an AF sensor 44, and photometry. This leads to the sensor 45. Further, the mirror 40 is located on the optical axis L1 as shown in the figure before the release, and retracts upward at the time of release to pass the light image passing through the photographing lens 211 to the rear focal plane shutter 46, film, etc. To a recording medium (not shown). Note that the mirror 40 may be fixed.

The CCD 43 is composed of a solid-state image sensor arranged in a matrix. R, G, and B color filters are arranged in front of the CCD 43 so as to pick up a color light image passing through the half mirror 42. is there.

The AF sensor 44 is composed of an AF sensor module, and performs focus detection using, for example, a phase difference detection method. The photometric sensor 45 measures the luminance of the subject from the light beam that has passed through the condenser lens 451. AF
The AF area and the AE area structure of the sensor 44 and the photometric sensor 45 will be described after the line-of-sight detection circuit 2 is described.

The monitor 47 comprises a two-dimensional color LCD or the like, and displays an image picked up by the CCD 43 or an image stored in an image memory 110 described later. In addition to the above-mentioned image display, the monitor 47 is capable of superimposing and displaying required marks, photographing conditions such as a shutter speed Tv and an aperture value Av, and the like. Reference numeral 471 denotes a backlight for the monitor 47 as a light source. 49
Denotes an eyepiece, which enables an image displayed on the monitor 47 to be observed from the viewfinder 28.

The optical member 48 has a surface 481 that reflects the measurement spot light for line-of-sight detection and transmits the image light from the monitor 47.

The line-of-sight detection circuit 2 is for detecting the line-of-sight position of the photographer who looks through the finder 28. The line-of-sight detection circuit 2 includes an infrared LED, an optical path switching half mirror in the reciprocating path, and a line-of-sight area AR1 to AR16 described later. It is composed of an infrared area sensor that is divided and formed. The reason for using infrared rays is to eliminate the influence of sunlight. Eye gaze detection
The light emitted from the infrared LED is reflected by the photographer's eye looking through the finder 28 and returns, and the determination is made based on which line-of-sight area of the infrared area sensor has received light. For example, a known line-of-sight detection method performed using the first Purkinje image, or using the first Purkinje image and the fourth Purkinje image, or another known method may be employed.

FIG. 7 shows the line-of-sight area and the corresponding positional relationship of the areas of the AF sensor 44 and the photometric sensor 45 with respect to the line-of-sight area. Reference numeral 18 denotes a frame indicating a photographing screen, and 19 denotes a line of sight detection area.

As shown in FIG.
Is for indicating the range in which the line of sight can be detected. A line-of-sight area corresponding to an area ratio of に and substantially equally divided into three rows and five columns in substantially the center of the photographing screen frame 18. Are formed. Therefore, the gaze detection is performed for the first to fifteenth
This is performed by determining which of the fifteen eye-gaze areas (AR1 to AR15) has received the reflected light from the photographer's eye. The area AR16 is an area outside the visual line detection area frame 19.

Areas AF1 to AF5 of the AF sensor 44 for focus detection are AR6 to AR6 in the second line of the line-of-sight area.
Arranged at a position corresponding to AR10, only the central AF area is formed horizontally. Areas AE1 to AE15 of photometric sensor 45 for photometry (not shown)
Are formed at positions corresponding to the areas AR1 to AR15.

FIG. 8 is a diagram showing marks and the like which can be displayed on the monitor 47. The gaze detection area frame 19 and the frames of the gaze areas AR1 to AR16 can be displayed. Further, a display area for four digits for displaying Tv and a two-digit display area for displaying Av are provided in a lower portion outside the visual axis detection area frame 19.

FIG. 9 is a diagram showing a state where the line of sight detection area frame 19 is displayed on the monitor 47, and FIG. 10 is a diagram showing a state where the line of sight area is displayed on the monitor 47. That is, based on the gaze detection result, the gaze detection area frame 19 is displayed as shown in FIG. 9, or a frame indicating the detected area AR is displayed as shown in FIG. 10. In FIG. 10, the area AR actually detected by the line-of-sight detection circuit 2 is blinkingly displayed by a broken line frame 191, and the area AR manually set by the line-of-sight operation member 30 from the detected area AR is indicated by a solid line frame 192. Is lit. In a state where both areas AR overlap, for example, a blinking display is performed. And AF, A
The E processing is performed on the area AR of the solid frame 192.

FIG. 1 is a circuit block diagram of a camera with a monitor according to the present invention. In the figure, reference numeral 1 denotes a microcomputer (hereinafter referred to as a microcomputer (μC1)).
In addition to taking in signals from various switches and operation members and image signals captured by the CCD 43, the internal ROM
Various calculations and sequence control of the entire camera are performed based on a program written in advance (not shown).

The power supply 15 is composed of a battery or the like, and supplies power to a required circuit section at a voltage Vo. A rectifier diode D1 and a backup capacitor C1 are interposed between the power supply 15 and the microcomputer (μC1) 1. The switch Q1 is, for example, a CMOS transistor.
Turned on and off based on a control signal from the microcomputer (.mu.C1) 1 As described below, the power supply to the required circuit parts at voltages V ₁ by the on-off.

The eye detection circuit 3 has the eye detection sensor 29 described above. The focus detection circuit 4 (indicated by AF in the figure) detects a focus for each AF area based on a signal obtained by the AF sensor 44 and outputs detection data to the microcomputer (μC1) 1. The winding circuit 5 charges the mechanism for winding and photographing the film (reset to the initial position) in synchronization with the release. The film sensitivity reading circuit 6 (indicated by DX in the figure) reads the film sensitivity data attached to the surface of the cartridge in which the film is loaded, using optical or magnetic means. LEMI7 is a lens drive circuit for focus detection, and LEMII8 is a lens drive circuit for image blur correction.
The lens is driven through the mount unit 1. Photometric circuit 9
Calculates photometric data for each AE area based on the detection signal from the photometric sensor 45, and calculates the microcomputer (μC1) 1
Output to

The CCD / monitor circuit 10 includes a CCD 43,
The microcomputer 43 includes a microcomputer (μC2) 100 for processing an image signal captured by the CCD 43, a memory for storing the processed image, and a monitor 47 for displaying a color image. The details will be described later.

When the monitor 47 is an LCD, the inverter 11 (shown as INV in the figure) has a backlight 47.
1 is a DC-AC inverter that converts a DC voltage V ₁ to a required level of an AC voltage so as to supply the AC voltage to the DC voltage V ₁ .
The encoder 12 (indicated by DV in the figure) is a photographing lens unit 2
For example, it is composed of a bit mark member having a position coded and a reading member for reading information of each bit of the bit mark member. Output as code data. The encoder 13 (indicated by f in the figure) is composed of a bit mark member and a reading member similar to those described above, which are disposed on the stationary side and the focusing lens side of the photographing lens unit 21, and code data corresponding to the focal length. Output as The AND circuit 14 has switches S _{1 at} both input terminals.
And the grip switch S _GR are connected, and the output side is connected to the interrupt terminal INT of the microcomputer (μC1) 1.

Next, various switches will be described.
Switch S ₁ is a switch for starting the AE and the operation of the AF calculation, etc. for photographing preparation in pushing the first stage of the release button 22.

The switch S ₂ is a switch for starting an exposure control operation for release by pressing the release button 22 in the second stage.

The switch _{SDPA / M} is a switch for switching between an automatic still image mode and a manual still image mode, and corresponds to the slider 23 in FIG. The automatic still image mode automatically switches the monitor display from a moving image to a still image after the end of shooting in single-shot shooting. In the manual still image mode, an image at the time of shooting is captured by the CCD 43 and temporarily stored in the image memory 110, and after the shooting is completed, the image stored by manual operation is displayed as a still image. The switch S _DPI is a switch for displaying a still image of the image stored in the image memory 110 at the time of shooting, and corresponds to the display operation member 25 in FIG. The switch S _PV is a switch for displaying on a monitor an image captured through the aperture set to the control aperture value, and corresponds to the preview switch 27 in FIG. The switch S _SDI is a switch for setting (set) and resetting the line-of-sight area detected by the line-of-sight detection circuit 2, and corresponds to the line-of-sight operation member 30 in FIG. The switch S _DPUP is a switch for sequentially changing the image in the display memory, and corresponds to the memory change switch 26 in FIG.

Next, FIG. 6 shows the CCD / monitor circuit 10.
FIG. 3 is a circuit configuration diagram of FIG. The CCD / monitor circuit 10 incorporates a microcomputer (μC2) 100. Microcomputer (μC
2) 100 outputs a command signal and a control signal to each circuit section of the CCD / monitor circuit 10 and performs data communication appropriately in response to a command from the microcomputer (μC1) 1 on the main body side.

The CCD 43 is, for example, 400 × 6
It is configured such that 00 (= 240,000) elements are arranged in a matrix.

The timing control circuit 101 has a microcomputer (μ
C2) Under the control of 100, the timing pulse a is output to a required circuit section. Color separation circuit 102
Are R, G, B from the imaging signal read from the CCD 43.
This is to separate and extract each color image signal. The switcher 103 selectively outputs an image signal of each color to the A / D conversion circuit 104 based on the timing signal a. The A / D conversion circuit 104 converts an input analog image signal into a digital signal.

The adder I circuit 105 is connected to the A / D conversion circuit 10.
4 and the signal from the RGB memory 106 are added as described later and output to the RGB memory 106 again. The adder I circuit 105 can directly output the output signal of the A / D conversion circuit 104 to the RGB memory 106 without performing the above addition as necessary. The RGB memory 106 includes a D-RAM or the like, and stores an output image signal from the adder I circuit 105. The display data creation circuit 107 performs image processing from an image signal stored in the RGB memory 106 into an image signal that can be displayed on the monitor 47. The character memory 108 stores characters such as characters displayed on the monitor 47, frames, and line-of-sight area marks.
2) Output the designated character signal according to the instruction from 100. The adder II circuit 109 adds the image signal from the display data creation circuit 107 and the character signal from the character memory 108 and outputs the result.

The image memory 110 stores captured images for display, and is composed of an S-RAM or the like, and has a capacity capable of storing a plurality of images in 60,000 pixels (byte) per screen. The display memories 111 and 112 are composed of SRAM or the like,
It is composed of an S-RAM having a storage capacity of 60,000 bytes,
The image to be displayed on the monitor 47 is temporarily stored. Images to be displayed are alternately loaded into the display memories 111 and 112 in order to prevent the display from being interrupted. The captured image is repeatedly read out at a predetermined speed and guided to the monitor 47. The selector 113 switches between the image created by the display data creation circuit 107 and the previously captured image at the time of shooting and displays the image on the monitor. The display control circuit 114 includes display memories 111 and 11
An operation signal is generated on the monitor 47 based on the image signal output from the monitor 2.

Correlation memory 115, correlation memory 116
Is composed of a D-RAM, and stores a specific portion, for example, an image near the center of the captured images. Correlation calculation circuit 1
17 receives the image signals from the correlation memory 115 and the correlation memory 116, executes a correlation operation on both images to calculate a shake amount, and based on the obtained shake amount, performs LEM.
The shake correction is performed by driving the II8. D ・ AGC
The circuit 118 is a digital gain controller that digitally amplifies an input signal with a gain set by the control signal e.

Next, the operation will be described. First, the control operation by the microcomputer (μC1) 1 will be described with reference to FIGS.
9 will be described. First, various flags will be described. Table 1 shows the contents of the set and reset states of each flag.

[0046]

[Table 1]

The eyepiece flag SGRF indicates whether or not eyepiece detection has been performed. The timer flag TMF is reset at a predetermined time when the eye-gaze detection does not detect a line-of-sight area. The area reset flag RSTF is set when the designated area is canceled (reset). The area flag ARF is set when an area is designated. The focusing flag AFEF is set when focusing is performed. The flag display IF is set when the display memories 111 and 112 are used. The flag still image F is set when in the still image mode. Flag still image IF
Are input / output control flags of the display memories 111 and 112.

[0048] Figure 11 is an interrupt routine executed when the switch S ₁ or grip switch S _G is turned on. When an interrupt occurs, the microcomputer (μC1) 1 resets all flags and prohibits interruption to this flowchart (# 2, # 4). Then, this interrupt whether caused by turning on the switch S ₁ is being discriminated (# 6). If the switch S ₁ is on, "S ₁ ON"
If it is not on, the process proceeds to the "eyepiece" subroutine (# 8, # 10). Then, C
To stop power supply to the CD / monitor circuit 10 etc.
The transistor Q1 is turned off, and after interruption to the flowchart is permitted, the operation is stopped (# 12 to # 12).
16).

FIG. 12 shows a subroutine "Eyepiece". First, it is determined from the eyepiece flag SGRF whether or not eyepiece detection has been performed (# 30).

When the eyepiece detection is not performed, the count value N for clocking is returned to "0", and the eyepiece flag SGRF indicating that this flowchart for eyepiece detection has been executed is set (# 32. # 34). Next, the microcomputer (μC1) 1 turns on the light emitting element 291 of the eyepiece sensor 29 for 10 msec, and during that time, inputs data from the light receiving element 292 (# 36, # 38). Then, it is determined whether or not there is light reception data (# 40).
If there is no light reception data, the count value N is incremented, and then it is determined whether N = K _N (# 4)
2, # 44). If N = K _N, it is determined that 2 seconds have elapsed, the eyepiece flag SGRF is reset (# 46), and the routine returns. On the other hand, if N = K _N , the process returns to # 36.

If there is light reception data in # 40, it is determined that the photographer is looking into the finder 28, and the transistor Q1 is turned on to supply power to various circuits (# 48). In order to stabilize the photometric circuit 9, 1
After waiting for 0 msec, photometric data is captured (# 50, # 52). The captured photometric data is output to the CCD / monitor circuit 10 after performing data output I (# 54), and the temporary focus detection AF1 is executed based on the photometric data (# 56). Then, the microcomputer (μ
C1) 1 causes the CCD 43 to perform the integration operation for a time set based on the photometric data, and then takes in the obtained measured data. Then, an exposure calculation is performed from the photometric data in # 52 (# 58 to # 62). Also,
At this time, a signal indicating that the first integration has been completed is indicated by CC
It is output from the D / monitor circuit 10 to the microcomputer (μC1) 1. When the exposure calculation is completed, the process waits for 100 msec (# 64).

Note that AF1 in # 56 is intended to focus on an appropriate AF area as a precedent to setting the AF area by line-of-sight detection or manual operation. The focus detection result is input from the AF circuit 4 and the photographing lens 201 is driven based on a predetermined area setting algorithm. This area setting algorithm may be such as to focus on the closest subject, for example.

FIG. 13 shows a subroutine "exposure calculation". In the exposure calculation, first, the sensitivity SV of the loaded film is read by the film sensitivity reading device 6 (# 9).
0). The shutter speed Tv and the aperture value Av are determined by a predetermined program diagram using the lens opening F value (AVo) written in the ROM in the photographing lens unit 21 and the obtained photometric value BV. Is calculated (# 9
2). The calculation result is output to the data output II and the CCD
/ Output to the monitor circuit 10 (# 94).

Table 2 shows various data output methods.

[0055]

[Table 2]

Returning to FIG. 12, the line of sight is detected in step # 66. This “line-of-sight detection” is shown in the subroutine of FIG. In the line-of-sight detection, first, the light emitting unit (infrared LED) in the line-of-sight detection circuit 2 is turned on for 10 msec,
It is considered that the emitted light is reflected by the photographer's eyes looking through the viewfinder 28 and received by the infrared area sensor, and the received light data is taken in (# 100, # 102). A line-of-sight area viewed by the photographer's eye is detected from the captured data, and the detected line-of-sight area is determined by an area ARN (N =
1 to 16) (# 104).

Next, it is determined whether or not the area ARN is the area AR16 (# 106). In the case of the area AR16, since the area is not within the detection area, it is determined that the area cannot be detected, and it is determined whether or not the timer flag TMF for measuring time during the period is set (# 10).
8) If not set, the timer flag TMF is set after the reset start of the timer T _AR (# 110, # 112).

In step # 108, when the timer flag TMF is set, in order to continue the timer _TAR operation,
The process proceeds to # 114 as it is. In # 114, the timer T
_It is determined whether or not the _AR has timed 5 seconds. If 5 seconds have not elapsed, the routine returns. If 5 seconds have elapsed, the gaze detection area frame 1 is detected.
The data for displaying No. 9 is set and the program returns (# 116).

On the other hand, if the detected area is not the area AR16 in # 106, the timer flag TMF is reset, and then the data for displaying the visual axis detection area frame 19 is reset.

[0060] Subsequently, in # 122, whether setting the visual line detected area ARN, or switch S _SDI for resetting is turned on from off is determined. If it is not turned on, the display data is output to the CCD / monitor circuit 10 at output III (# 134), and the routine returns. If it has been turned on from off, then it is determined whether or not the area reset flag RSTF has been set (# 124). When the area reset flag RSTF is set,
This flag is reset and then the current detection area ARN
Are set as the setting area LARN and the area flag ARF indicating the area setting is set, and these data are output to the CCD / monitor circuit 10 at the output III (# 126 to # 134), and the routine returns.

On the other hand, if the area reset flag RSTF is not set at # 124, the setting area LA
It is determined whether the RN is equal to the current detection area ARN (# 128). If both areas are equal, switch S
_{SDI determines} that the specified area LARN has been operated to cancel, and resets the area reset flag RST.
F is set, and then data for displaying the line-of-sight detection area frame 19 displayed when the power is turned on is set.
After F is reset, the data is output to the CCD / monitor circuit 10 at output III (# 136 to # 13).
4) Return. In # 128, the setting area LARN
If the current detection area ARN is not equal to the current detection area ARN, the switch S
_Assuming that _SDI was operated for area setting, # 130
The following processing is executed and the routine returns.

Next, the subroutine "AF / AE" will be described with reference to FIG. In this subroutine, first, it is determined whether or not the area flag ARF is set based on the operation of the switch S _SDI (the line-of-sight operation member 30) (# 150).

If the area flag ARF has not been set, it is next determined whether or not the area reset flag RSTF has been set (# 152). When the area reset flag RSTF is set, AF,
Since it is not known to which area ARN the AE processing should be performed, A is not set until the next time the area AR is set.
To lock the F / AE, skip steps # 154 to # 158, reset the focus flag AFEF indicating the focus (#
160) and return. If the area reset flag RSTF is not set in # 152, it means that the area AR has never been set since the power was turned on.
In this case, it is considered that it is better not to perform AF / AE lock so that AF and AE processing can be performed on various subjects at any time, and the above-described temporary focus detection of AF1 is repeatedly performed (continuous AF). After the photometric value BV is obtained and the exposure calculation is further performed, the focus flag AFEF indicating the focus is reset (# 160), and the process returns.

On the other hand, if the area flag ARF is set by the switch S _SDI (the line-of-sight operation member 30) at # 150, then the focus flag A indicating that focus has been performed once is performed.
It is determined whether FEF is set (# 16).
2) If set, that is, once in focus,
Without performing focus detection again (one-shot AF)
To return. If not set, focus detection is performed, and it is determined based on the result whether or not focus is achieved (# 164, # 166). If not in focus, the taking lens 201 is driven based on the result of focus detection (# 16)
8) Return to # 164 again. If it is determined in step # 166 that the object is in focus, the in-focus flag AF indicating that the object is in focus
EF is set, and then photometry is performed (# 17)
0, # 172), and returns.

Here, the "focus detection" subroutine will be described with reference to FIG. 16, and the "photometry" subroutine will be described with reference to FIG.

In the focus detection, first, the set area A
Defocus amount DF in area AF corresponding to RN
_N is calculated (# 180). Table 3 shows the correspondence between the line-of-sight detection area and the AF area at this time.

[0067]

[Table 3]

Subsequently, data including the color correction data of AF of all areas is fetched from the CCD / monitor circuit 10 (# 182), and then the defocus amount DF is set to a predetermined value DF.
_It is determined whether it is less than _K1 (# 184). If the defocus amount DF is less than the predetermined value DF _K1 , the color correction data corresponding to the area ARN is replaced with ΔDF, and furthermore,
The operation of DF _N = DF _N + ΔDF is performed (# 188,
(# 190), the process returns. Conversely, the defocus amount DF
Is greater than or equal to the predetermined value DF _K1 , the correction amount is set to “0” (# 186), and the calculation of # 190 is performed.

In the correction using the correction value ΔDF, the value is considerably large, for example, about 500 μm.
If the image on the CD 43 is largely blurred, no correction is made in consideration of the fact that accurate color data is not output due to color bleeding (# 186).

Next, photometry will be described. Table 4 is a table showing the relationship between the detected line-of-sight area and photometric data.

[0071]

[Table 4]

In the photometry, first, the subject distance DV is calculated based on the amount of lens extension, and the focal length f is taken in. The image magnification β is calculated from the subject distance DV and the focal length f (# 200). ~ # 204). Then, the resulting image magnification β whether more than a predetermined value K _B is determined (# 206). If the image magnification β is equal to or _larger than the predetermined value KB, photometric data of the AR area is output from the CCD / monitor circuit 10 based on "photometric A" in Table 4 and an average value thereof is calculated (# 208). , # 212). Conversely, if the image magnification β is less than the predetermined value K _B, based on the "photometric B" in Table 4, in the same manner as described above is output photometric data for AR area, the exposure operation is performed from the photometric data ( #
210, # 212). In the above description, when the image magnification β is small, the photometry data of a plurality of areas are averaged, so that the entire scenery or the like can be appropriately photographed.

[0073] Returning to FIG. 12, after the processing of the AF / AE is performed, whether the switch S ₁ is turned on is determined (# 70). If the switch S ₁ is turned on,
The subroutine "S ₁ ON" is executed (# 80),
Go to # 66. Conversely, if no switch S ₁ is being turned on, whether or switch S _PV is turned from off to on is determined (# 72). If the switch _SPV has been turned on from off, the "preview" subroutine is executed (# 74); otherwise, the image memory 1
Switch S _{DP I} for displaying the image stored in 10 the monitor 47 whether turned ON from OFF is determined (# 76). If the switch S _DPI is turned on from off, the switch data is output to the CCD / monitor circuit 10 (data output IV) (# 78).
Go to # 66. If none of the switches is operated, the process proceeds directly to # 66.

Next, the subroutine "S ₁ ON" will be described with reference to FIG. First, when the switch S ₁ is turned on, whether the ocular flag SGRF showing an eye detection is set is determined (# 220).
If the eyepiece is detected here (YE in # 220)
S), since the initialization of the CCD / monitor circuit 10, the initialization of AF, etc. have already been completed,
F / AE is performed (# 222, # 224).

[0075] Then, whether the switch S ₂ is turned on is determined (# 226). If switch S ₂ is on, whether the switch S _PV is turned from off to on is determined (# 252). If the switch S _PV has been turned on from off, the “preview” subroutine is executed (# 254). Otherwise, the switch S for displaying the image stored in the image memory 110 on the monitor 47 is displayed. _It is determined whether the _DPI has been turned on from off (# 256). Where switch S _DPI
Is switched from off to on, this switch data is transferred to the CCD
/ Output to the monitor circuit 10 (data output IV) (# 2
58), and proceed to # 260.

[0076] In # 260, whether the switch S ₁ is turned off is determined, and if it is not turned off, the timer T
_H is reset-started (# 264), and the process proceeds to # 222. On the other hand, the switch S ₁ is if it is off, the whether the timer T _H is 5 seconds timed determination is performed (#
262) Until the time elapses, proceed to # 222, and if it elapses, return. In addition, if the eyepiece flag SGRF is not set in # 220, # 48 (FIG. 1)
Proceed to 2).

[0077] In # 226, the switch S ₂ is turned on, the switch S ₂ on the data CCD /
The data is output (data output IV) to the monitor circuit 10 (# 22).
8) On the other hand, the process waits for an exposure OK signal to be input from the CCD / monitor circuit 10 (# 230). When the exposure OK signal is input, aperture control is performed in accordance with the required aperture value. Next, an exposure start signal is output to the CCD / monitor circuit 10, and 10 msec.
It waits for c (# 232 to # 236). Thereafter, exposure control, that is, shutter speed control is performed (#
238). After the exposure is completed, the film is wound up and each mechanism is charged to its initial position and released (charging).
An interrupt V signal is output to control the aperture thus stopped to start the next integration in the CCD 43, and then the focus flag AFEF is reset to perform AF again (# 24).
0 to # 244).

Next, it is determined whether or not continuous shooting has been performed (#
246), in the case of continuous shooting, the process waits for input of a signal indicating the end of integration and operation of CCD 43, and when a signal indicating the end of operation is input (# 248), the flow proceeds to # 224. Thus, at the time of continuous shooting, by obtaining new data for integration of the CCD 43, focus detection, and photometry, it is possible to show a moving image to a photographer. In consideration of the fact that the accuracy of the line of sight detection is reduced due to the occurrence of shake due to the shock when the shutter or the film is wound, the line of sight is not detected during continuous shooting. If the mirror-up type camera does not allow light to reach the finder 28 during continuous shooting, the subject cannot be seen during that time, so that the line of sight detection may not be performed.

On the other hand, if it is not the continuous shooting in # 246,
Wait until the switch S ₁ is turned off (# 250), the switch S ₁ is turned off, the process proceeds to # 222. Thus, in the CCD / monitor circuit 10 side, while the time captured still image is switched S ₁ on, the monitor 4
7 is displayed.

Next, the "preview" subroutine
This will be described with reference to FIG. First, the output switch data switch S _PV is the CCD / monitor circuit 10 (data output IV) (# 280). Next, the microcomputer (μC
1) 1 waits for an exposure OK signal to be input from the CCD / monitor circuit 10 (# 282).

When the exposure OK signal is input, the aperture is controlled by the control aperture value, and the exposure start signal is
/ Output to the monitor circuit 10 (# 284, # 28
6). After that, it waits for the exposure time (# 288), and the charging of only the controlled aperture is performed without charging the shutter or the film feed (# 290).

Then, an interrupt V signal is output, and the focus flag AFEF is reset (# 292, # 29).
4). Subsequently, the waiting for from the off state to the on state of the switch S _PV is performed (# 296). Unless this switch operation is performed, the CCD / monitor circuit 10 does not display a still image. When the switch S _PV is turned on from off,
This switch data is output to the CCD / monitor circuit 10 (data output IV), followed YES～ # 30 in the power holding timer T _H is reset and started (# 296
0), return.

Next, FIGS. 20 to 30 show the sequence on the CCD / monitor circuit 10 side, in which the microcomputer (μ
This will be described based on the flowchart of C2) 100.

FIG. 20 is a flow chart showing an interrupt due to power-on or the like. That is, the power supply is a microcomputer (μC
2) When supplied to 100, first, initial reset of flags, registers, and the like is performed (S2). That is, the variable N = 0, the moving image / still image is set to the moving image mode, and the display memory 1 is set.
11 indicates that input is possible and output is not possible, and the display memory 112 indicates that input is impossible and output is possible, and the flag still image IF = 1 is set. And the integration time T _{CCD of the CCD} 43 is 3
The initial setting is set to 0 msec, and then the integral control is started (S4, S6).

The subroutine "integration control" is shown in FIG.
1 will be described. First, the integration time T _CCD is sent to the timing control circuit 101 (S50). When this data is input, the timing control circuit 101
The integration operation of D43 is started, and when the integration is completed, an integration completion signal is output to the microcomputer (μC2) 100 (S5).
2). When the microcomputer (μC2) 100 receives the integration end signal, the microcomputer (μC2) 100 outputs this signal to the microcomputer (μC1) 1 (S54), and furthermore, the correlation memory 11 for shake detection.
5, the correlation memory 116 is switched alternately (S54,
S56). Thereafter, a memory end signal indicating the end of image data capture is input (S58), and the routine returns.
This memory end signal is input from the timing control circuit 101.

FIG. 22 shows a subroutine "luminance / color memory". This stores the brightness and color on each AR area of the CCD 43. First, a variable N representing the area is set to "1", and then the data of the designated area AR is read from the RGB memory 106. Issued
A color is calculated from this data based on a preset arithmetic expression, and is stored in a color memory C in the microcomputer (μC2) 100.
(N) (S70 to S74). The data obtained in this subroutine is stored in the microcomputer (μC2) 10
0 is stored in the memory unit. Subsequently, the "luminance calculation memory" is executed (S76).

The "brightness calculation memory" subroutine will be described with reference to FIG. First, the designated area A
The data of R is read from the RGB memory 106, the average luminance level of the area AR is calculated from the data, and stored in the register BR (S100). Next, the appropriate level B of the signal of the _CCD 43 is added to the integration time T _CCD this time.
The ratio between _ref and the average luminance level is multiplied, and the multiplication result is stored in the memory T _CCD (N) (S102). The value of T _CCD × (B _ref / BR) is converted into a logarithmic value TV and stored in the memory TV (N) (S104, S1).
06).

Returning to FIG. 22, it is determined in S78 whether N = 15. If N is not 15, N is incremented (S80), and the process returns to S72. When N = 15, the color temperature of each area and the color temperature CT of the entire screen (that is, the temperature of the light source) are calculated from the data of the memories C (1) to C (15), and the obtained color temperature is obtained. From the CT and the color temperature of each area, the color of each area is calculated and stored in the color memory C (N) (S82 to S8).
6).

Returning to FIG. 20, it is determined in S10 whether or not the timer flag TMF has been set. If the timer flag TMF is not set, the timer interrupt is permitted, then the timer _TINT is reset and started, and the timer flag TMF is set (S
12 to S16), and proceed to S18. On the other hand, if the timer flag TMF is set in S10,
Skip to 18.

In S18, display data representing a character is output to character memory 108 and temporarily stored therein, and then adder II circuit 109 is turned on. At this time, a signal from timing control circuit 101 synchronizes with the image data to be displayed. Display memory 111, display memory 1
12 to one of them. This character is on monitor 4
It is displayed at a predetermined position on seven screens. The character display includes frames 19, 191, 192 from the microcomputer (μC1) 1, Av / Tv value, selection area, line-of-sight area, and the like. Subsequently, an operation end signal is output,
Further, the calculation of the integration time T _CCD is performed (S22, S2
4) Go to S6.

FIG. 24 shows a subroutine " _TCCD operation". Here, the integration time T _CCD is the memory T _CCD (N)
(S120) and returns.

FIG. 25 shows a subroutine of the timer interrupt " _TINT ". This timer interrupt is executed when the timer elapses a predetermined time, for example, 0.5 second.
If the line-of-sight area is set, data to change to the setting is created, and if reset, the data is changed to the setting (S13).
0), the timer T _INT is reset-started (S132), and the process returns.

In FIG. 20, when the "interrupt output I" from the microcomputer (μC1) 1 is applied, the photometric data BV at this time is taken in, and the CC is determined based on the photometric data BV.
The integration time T _{CCD of} D43 is calculated (S30, S3
2) After that, the integral control of S6 is performed. Next, when the "interrupt output II" is received from the microcomputer (μC1) 1, the input II subroutine is executed.

FIG. 26 shows the "input II" subroutine. Here, first, the switch data of the switch S ₂ is captured (S140). And this switch S ₂
There is discriminated whether it is off (S142), if it is off, is set to the variable N _C 0 to be described later (S14
4) On the other hand, if it is on, return.

Other interrupts from the microcomputer (μC1) 1 include a data input (S50) by “interrupt output III”,
Input IV for control such as display instruction by "Interrupt output IV"
(S60).

Next, the "input IV" subroutine will be described with reference to FIG. First, the switch data of the switch S ₂ is taken, whether the switch S ₂ is turned on is determined (S150, S152).
Switch S ₂ is equal on, the exposure control is performed (S154).

Here, the "exposure control" subroutine will be described with reference to FIG. First, the microcomputer (μC
1) The shutter speed Tv expressed by the logarithmic value input from 1 is converted to the actual integration time T _CCD of the _CCD 43, and then the exposure OK signal is output (S220, S)
222). Thereafter, it waits for an exposure start signal from the microcomputer (μC1) 1 to be input, and when this signal is input, integration control is executed (S224, S226), and
To return.

Here, the subroutine "integration" of S226 is shown in FIG. At this time, the camera shake (subject shake) is detected on the CCD / monitor circuit 10 side. If the exposure time is long, shake detection is performed a plurality of times during the exposure. In this case, the integration time T _CCD is divided into a required number of times, and exposure is performed for each of the divided times. The image data is digitally added.

In the following, referring to FIG. 29, first,
While the shake correction permission signal is output to the lens drive circuit LEMII8, the limit shutter speed Tf (usually 1 / f) that causes camera shake is calculated from the captured lens focal length f (S240, S242), and then this calculation is performed. The value and the integration time T _CCD are compared in magnitude (S24).
4). If Tf> _TCCD, it is determined that the possibility of a shake is low, and the gain of the D / AGC circuit 118 is set to “1”. At this time, the shake correction is prohibited (S272).
S274), and proceed to S266. In S266, integral control is performed, shake correction is prohibited, and the adder I circuit 105
Is turned off (S266-S270), and the routine returns.

On the other hand, if Tf ≦ T _CCD , the adder I circuit 105 is turned on (S246). At this time, first, it is determined whether 2Tf> T _CCD (S248),
If 2Tf> T _CCD, it is considered that the shake amount is small, and
The gain of the D / AGC circuit 118 is set to "2", and the integration time is further changed to 1/2, that is, T _CCD / 2 (S276, S278), and two integrations of S264 and S266 are performed. When the integration control ends, the shake correction is prohibited, the adder I circuit 105 is turned off (S268, S270), and the routine returns.

If it is determined in S248 that 2Tf ≦ T _CCD , then it is determined whether 4Tf> T _CCD (S25).
0). If 4Tf> T _CCD, D · AGC circuit 118
Is set to “3”, the integration time is further reduced to 1/3,
That is, it is changed to T _CCD / 3 (S258, S26
0), three integrations of S263, S264 and S266 are performed. When the integration control ends, the shake correction is prohibited, and the adder I circuit 105 is turned off (S2).
68, S270), and returns.

In S250, if 4Tf ≦ T _CCD , D
The gain of the AGC circuit 118 is set to “4”, and the integration time is further changed to 、, that is, T _CCD / 4 (S252, S254), and S256, S263, S26
Four integrations of 4 and S266 are performed. When the integration control ends, the shake correction is prohibited, and the adder I circuit 105
Is turned off (S266 to S270), and returns. The signal whose gain has been controlled by the D / AGC circuit 118 is alternately input to the correlation memory 115 and the correlation memory 116 for each integration. The correlation operation circuit 117 performs a correlation process on the image signals read from both memories,
In addition to detecting the degree of image shift, LEMII
8 is output. The LEMII 8 calculates a lens correction amount based on the input correlation result, and drives the photographing lens 211 by the correction amount.

At this time, the image signal is added for each integration and is taken in the RGB memory 106 again. As a result, an image of the entire exposure time is obtained, and the brightness of the image becomes appropriate on the monitor 47.

Returning to FIG. 27, when the exposure control in S154 is completed, it is next determined whether or not the mode is the continuous shooting mode (S15).
6). If the continuous shooting mode, variable N _C indicating an address of the image memory 110 is incremented, the photographed image at this address is written (S162, S164). In other words, in the continuous shooting mode, the still image mode is not set, and the image for each image is stored so that the image shot at the end of the continuous shooting can be viewed. After that, it waits for an interrupt (S1
70). On the other hand, if the mode is not the continuous shooting mode in S156, it is determined whether the mode is the manual mode (S158). If the manual mode, and remains in the video mode without the still image mode, and as a variable N _C = 1, the captured image to the same address of the image memory 110 is written (S160, S16
4). On the other hand, if the mode is not the manual mode, that is, if the mode is the automatic mode, the flag still image F is set to set the still image mode, and the display selection is executed.

This “display selection” subroutine is described in the third subroutine.
FIG. First, it is determined whether or not the flag still image F is set (S280). If the flag still image F is set, subsequently, it is determined whether or not the flag display IF is set (S282).

If the flag display IF is set, the flag display IF is reset, and then the display memory 1
12 (indicated by the display memory II in the flow) is switched to input enabled, and the display memory 111 (indicated by the display memory I in the flow) is inhibited from inputting. Then, the display memory 111 and the display memory 112 are controlled. The data is output (S284 to S290), and the process returns. S2
At 82, when the flag display IF is not set,
This flag display IF is set, and then the display memory 1
11 is switched to input enabled and the display memory 1
12 are prohibited from inputting, and then these display memories 11
1. The control data is output to the display memory 112 (S2
92-S296, S290), and returns.

On the other hand, if the flag still image F is not set in S280, it is determined whether or not the flag display IF is set (S298).
Is set, the display output is switched from I to II, that is, from the display memory 111 to the display memory 112 (S300). Conversely, if the flag display IF is not set, the display output is changed from II to I. That is, the display memory 112 is switched to the display memory 111 (S30).
2). Thus, in the still image mode, the display memory 111
One of the display memory 112 and the display memory 112 is in a state where input is prohibited and output is possible, and the other is in a state where input is possible and output is prohibited, so that a still image can be displayed and a moving image is displayed in the display memory 111,
Since the data is constantly updated and stored in one of the memory 112, it can be displayed immediately when a change from a still image is made.

[0108] Returning to Figure 27, in S152, if not switch S ₂ is on, whether the switch S _PV is changed from OFF to ON is determined, if the switch S _PV is turned from off to on, It is determined whether the flag still image F is set (S172, S17).
4). If set flag still image F, it is determined that the switch S _PV is operated so as to cancel the still image mode, this flag still image F is reset, and then display selection is executed (S182, S184) And return. If the flag still image F is not set in S174, preview control, that is, exposure control is performed to display an image captured by the CCD 43 on the monitor 47 (S176). Thereafter, the flag still image F is set, and then the display selection is executed (S178, S18).
0), return.

[0109] In S172, the switch S _PV is unless the turned on from off, whether the flag still image F is set is determined (S186). If the flag still image F is not set, it is determined that the flow has been entered by the operation in the manual mode, the flag still image F is set, and then the variable N _C = 0 is set.
13 is controlled, an image signal from an address “0” (= N _C ) of the image memory 110 is transmitted to the display memory 11.
1, guided to the display memory 112 and displayed on the monitor 47 (S188 to S194). If the flag still image F has been set, it is determined whether the display change up switch S _DPUP has been turned on from off (S196). If the display change up switch S _DPUP is on from off,
The address N _C is incremented, whereby the image signal from the address N _C of the image memory 110 is led to the display memory 111 and the display memory 112, and displayed on the monitor 47 (YES in S196, S198, S194).

If the display change up switch S _DPUP is not on from off, it is determined that the manual mode has been released and this flow has been entered. First, the flag still image F is reset, then the address N _C = 0, and further the selector N _C is set. When the address 113 is controlled, the address “0” of the image memory 110 is set.
(= N _C ) is led to the display memory 111 and the display memory 112 and displayed on the monitor 47 (S1).
NO at 96, S200 to S204). Thereafter, the flow returns.

FIG. 31 shows a modification of the CCD / monitor circuit 10 shown in FIG. In the figure, components denoted by the same reference numerals as those in FIG. 6 perform the same functions. FIG. 32 shows an arrangement of an image sensor of the CCD 430 and R, G, B filters, FIG. 33 shows an arrangement of R, G, B filters of the color monitor 470, and FIG. 34 shows a film size. It is. 32 and 33,
.. Indicate lines, and V1, V2,... Indicate columns.

The CCD 430 is provided with filters of the same color in the column V direction in the RGB color order in the line H direction.
The one composed of 280,000 pixels is adopted.
The monitor 470 has the same filter arrangement as the CCD 430 and has a configuration of 70,000 pixels.

The number of imaging pixels is four times the number of display pixels. In addition, film size (24mm x 36mm) and CCD
In comparison with the pixel pitch of 430, the dimension on the film surface per pixel is 0.056 mm square, which sufficiently satisfies the fineness required for photometry and measurement of subject color. Therefore, the pixels of the CCD 430 are added to make the number equal to the number of pixels of the monitor 470. In this example,
Four pixels of the CCD 430 are treated as one pixel. In this case, it is 0.11 mm square on the film surface,
In the current spot metering, it is similarly sufficiently fine considering that it is a circle having a diameter of 5 to 7 mm. In addition, in the shake detection, the AF sensor 44 is set to 0.1% on the film.
Considering the resolution of mm, the movement of the image on the film surface makes it possible to obtain image detection performance equivalent to this AF.

Hereinafter, an outline of the control method will be described.
The four pixels related to H1, H2, V1, and V2 of the CCD 430 are used as one pixel, and H1, V1
Corresponding to one pixel. This is designated as the R color. The next four pixels related to H1, H2, V3, and V4 of the CCD 430 are used as one pixel, and the H
One pixel corresponding to 1, V2 is defined as B color. Further, H1, H2, V5, V6 of the next CCD 430
The four pixels related to monitor 47 are used as one pixel.
One pixel corresponding to H1 and V3 of 0 corresponds to G color. The same applies to the lines H3 and H4, H5 and H6,. Then, using the output of the pixel corresponding to the CCD 430, detection of color (temperature), luminance, and shake amount is performed.

The above operation control is performed by the microcomputer (μC2) 100, in particular, the portion surrounded by the broken line in FIG.

That is, the A / D conversion circuit 1104 receives the signal from the timing control circuit 101 and
Is sampled every other pixel for one line. For example, among the H1 lines, V1, V3,
Pixel signals corresponding to V5,... Are extracted. And
The pixel signals of every other pixel are arranged in the order of R, B, and G, are stored in the line memory 1106, are further fed back to the adder I circuit 1105, and are continuous in the column direction (here, H2). Pixel signals of the same color are added. The added signal is sequentially created as a display signal by the display data creation circuit 107,
The data is written to the image memory 110, the display memory 111, or the display memory 112.

In this case, color data can be extracted with two pixels from among the four pixels in the CCD 430, and as described above, the data of those two pixels is added. Is reduced to 1/2 in this embodiment. Note that the brightness calculation and the color calculation are performed by the microcomputer (μC2) 100 using the contents stored in the display memory 111 and the display memory 112.

By adopting such a configuration, RGB
The memory 106 may be a line memory 1106, and the storage capacities of the display memories 111 and 112 can be reduced and the cost can be reduced. In addition, the integration time can be shortened by half, so that even when the exposure time is long, a moving image can be displayed in a short cycle, and the shake detection cycle becomes faster.
The number of correlation operations can be reduced. Further, the microcomputer (μC2) 100 controls the display memories 111 and 112 to control the brightness,
Performing the color calculation simplifies the processing of the display data creation circuit 107.

The timing signal a of the timing control circuit 101 may be adjusted according to the filter configuration of the CCD 430 and the monitor 470 and the ratio of the number of pixels, and the integration time and the memory capacity may be changed as appropriate.

FIG. 35 is an internal structural view showing an embodiment in which an optical finder and a monitor 47 are separately provided.
FIG. 2 is a rear perspective view of the camera with a monitor in the embodiment. Note that, in the drawings, those denoted by the same reference numerals as those in FIGS. 3 and 5 perform the same functions.

The monitor 47 is arranged on the back cover of the camera body 20 so that a photographed image and the like can be observed from behind the camera. As shown in FIG. 35, the inside of the camera has an optical finder at an upper part and a photographing lens (film) at a lower part.

On the photographing lens side, the AF sensor 44
Passes through a pellicle mirror 40 which is a half mirror,
A subject image reflected by the sub-mirror 401 and guided through the relay lens 441 can be captured. During photographing, the sub mirror 401 is retracted (down) out of the optical path, and the film F is exposed by controlling the opening of the shutter 46 in this state.

On the other hand, the optical finder side is
0, pentaprism 51, lens 48 and eyepiece 4
9, an ordinary optical finder system is employed. Part of the light beam that has passed through the photographing lens 211 is reflected by the pellicle mirror 40 toward the finder side, and forms an image on the virtual reticle 50. This image is guided to the finder 28 via the pentaprism 51, the lens 48 and the eyepiece 49, so that the subject image can be observed.

The line-of-sight detection circuit 2 is disposed in the upper and front part of the pentaprism 51, and includes an infrared LED 201, a half mirror 202 for switching an optical path in a reciprocating path, a condenser lens 203,
It comprises a semi-transmissive surface 481, a mirror 204 on the return path, and an infrared area sensor 205 formed by dividing the line-of-sight areas AR1 to AR16.

One surface of the pentaprism 51 is a half mirror 511, and a part of the light beam is imaged through the relay lens 431, and the CC arranged at the image forming position
An image is taken at D43. The image captured by the CCD 43 is
It is guided to the monitor 47 and displayed in the same manner as in the above embodiment.

In this embodiment, the light image that has passed through the photographing lens is guided to the image pickup device CCD. However, an optical system different from the photographing lens may be separately provided to perform image pickup. By doing so, the inconvenience that integration with the CCD cannot be performed unless the aperture is opened during continuous shooting is eliminated, and the moving image display during continuous shooting is more like a moving image (the image switching interval is shortened). )appear.

In this embodiment, the provisional focus detection A
When the line-of-sight area is set as F1, focus detection is performed once (one-shot AF). However, one that automatically switches between one-shot AF and continuous AF according to a subject (still / moving image) may be used. Good.

[0128]

As described above, according to the first aspect of the present invention, the configuration including the mode switching means is provided.
It is possible to selectively switch between a continuous shooting mode in which continuous shooting is automatically executed and a single shooting mode in which shooting is performed each time.

When the single shooting mode is selected, the image signal at the time of shooting stored in the storage means is led to the display means for display after the end of shooting, whereby the shot image is frozen in the single shooting mode. It can be grasped as a picture.

When the continuous shooting mode is selected, an image signal picked up by the image pick-up means is guided to the display means for display after the end of each shooting. By doing so, continuous shooting can be suitably performed.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of a camera with a monitor according to the present invention.

FIG. 2 is a front perspective view showing an external configuration of a camera to which the present invention is applied.

FIG. 3 is a rear perspective view showing an external configuration of a camera to which the present invention is applied.

FIG. 4 is an enlarged view of a grip portion GP in an external configuration of a camera to which the present invention is applied.

FIG. 5 is a diagram illustrating an internal structure related to a photographing lens and an optical system in a camera body.

FIG. 6 is a circuit configuration diagram of a CCD / monitor circuit.

FIG. 7 is a diagram showing a line-of-sight area and a corresponding positional relationship between the AF sensor and the AE sensor with respect to the line-of-sight area.

FIG. 8 is a diagram showing marks and the like that can be displayed on a monitor.

FIG. 9 is a diagram showing a state in which a line-of-sight detection area frame is displayed on a monitor.

FIG. 10 is a diagram showing a state in which a line-of-sight area is displayed on a monitor.

11 is an interrupt routine executed when the switch S ₁ or the grip switch S _G is turned on.

FIG. 12 shows a subroutine of “eyepiece”.

FIG. 13 shows a subroutine of “exposure calculation”.

FIG. 14 shows a subroutine of “line-of-sight detection”.

FIG. 15 shows a subroutine of “AF / AE”.

FIG. 16 shows a “focus detection” subroutine.

FIG. 17 shows a subroutine “photometry”.

FIG. 18 shows a subroutine of “S ₁ ON”.

FIG. 19 shows a “preview” subroutine.

FIG. 20 is a flowchart showing an interrupt due to power-on or the like.

FIG. 21 shows a subroutine of “integration control”.

FIG. 22 shows a subroutine of “luminance / color memory”.

FIG. 23 shows a subroutine of “luminance calculation memory”.

FIG. 24 shows a subroutine of “T _CCD calculation”.

FIG. 25 shows a subroutine of timer interrupt “T _INT ”.

FIG. 26 shows a subroutine of “Input II”.

FIG. 27 shows a subroutine of “Input IV”.

FIG. 28 shows a subroutine of “exposure control”.

FIG. 29 shows a subroutine of “integration”.

FIG. 30 shows a subroutine of “display selection”.

31 is a diagram showing a modification of the CCD / monitor circuit 10 shown in FIG.

FIG. 32 is a diagram showing an arrangement of an image sensor of the CCD 430 and R, G, and B filters.

FIG. 33 is a diagram showing an arrangement of R, G, B filters of the color monitor 470.

FIG. 34 is a view showing a film size.

FIG. 35 is an internal structural view showing an embodiment in which an optical finder and a monitor are separately provided, and corresponds to FIG. 5;

36 is a rear perspective view of the camera with a monitor in the embodiment of FIG. 35, corresponding to FIG. 3;

[Explanation of symbols]

Reference Signs List 1 microcomputer (μC1) 2 gaze detection circuit 3 eye detection circuit 4 AF circuit 5 winding circuit 6 film sensitivity reading device 7 LEMI 8 LEMII 9 photometry circuit 10 CCD / monitor circuit 11 inverter 12, 13 encoder 14 AND circuit 15 power supply 18 shooting screen 19 Gaze detection area frame 191, 192 frame ARN (N = 1 to 16) Gaze area AF1 to AF5 AF area 20 Camera body 21 Shooting lens unit 211 Shooting lens 22 Release button 23 Slider (switch S _{DPA / M} ) 24 Body display unit 25 display operation member (switch S _DPI ) 26 memory change switch (switch S _DPUP ) 27 preview switch (switch S _PV ) 28 finder 29 eyepiece sensor 30 line of sight operation member (switch S _SDI ) 40 pellicle mirror 41 micro optical system 4 2 Half mirror 43 CCD (imaging means) 44 AF sensor 45 Photometric sensor 46 Focal plane shutter 47 Monitor 51 Pentaprism 100 Microcomputer (μC2) 101 Timing control circuit 102 Color separation circuit 103 Switcher 104 A / D conversion circuit 105 Adder I circuit 106 RGB memory 107 display data creation circuit 108 character memory 109 adder II circuit 110 image memory 111, 112 display memory 113 selector 114 display control circuit 115, 116 correlation memory 117 correlation operation circuit 118 D / AGC circuit

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Shigeto Omori 2-3-13 Azuchicho, Chuo-ku, Osaka City Osaka International Building Minolta Camera Co., Ltd. (56) References JP-A-5-56312 (JP, A) JP-A-3-271730 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 13/00-13/28 G03B 17/18-17/20 H04N 5/222- 5/257

Claims (1)

(57) [Claims] 1. A camera for photographing a light image of a subject passing through a photographing lens, an image pickup means for repeatedly photographing the light image of the subject passing through the photographing lens, and an image signal of the object photographed by the image pickup means during the photographing Storage means for capturing images, display means capable of displaying images, mode switching means for selectively switching between a continuous shooting mode for automatically executing continuous shooting and a single shooting mode for enabling single-time shooting, when single shooting mode is selected, leading to the display means an image signal stored in the storage means after the shooting was still image table <br/> shown, when the continuous shooting mode is selected monitor with a camera, characterized in that the image signal captured by the imaging unit after each shot and a display control means for moving image display is guided to the display means.