JPH02126253A - Camera-shake display device for camera - Google Patents

Abstract

PURPOSE:To define the magnitude of camera-shake by outputting the detected amount of camera-shake as analog information and performing a locus display by dots in accordance with the analog information. CONSTITUTION:A sequence control circuit 6 transfers the data on the amount of camera-shake converted into digital value by a high speed A/D conversion circuit 5 to a dot image display body control circuit 7 as the display data of camera-shake in X and Y directions based on the data, sets the allowable frame of camera-shake, and transfers display switching data between the locus display of camera-shake when an SW is on and the locus display of camera-shake while a shutter is opened and display mode data at the time of actuating or not actuating a vibration-proof mechanism. A dot image display body control circuit 7 decodes a signal in order to perform display on a two-dimensional dot matrix based on each data. The signal is converted into a driving signal for an LCD, etc., by a dot image display body driving circuit 8 so as to display the locus display of camera-shake, etc., on a dot image display body 9.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a camera shake display device that uses a camera shake detection sensor to inform a photographer of the amount of camera shake.

(Background of the Invention) In recent years, sensors for detecting shake amount, such as angular acceleration sensors using inertial force and angular acceleration sensors such as vibrating gyros, have begun to be commercially available. As the sensor becomes smaller, it has been proposed to introduce it into instruments that are held in the hands of photographers, such as silver halide cameras and video cameras.

At this time, a problem arose as to how to clearly inform the photographer of the amount of camera shake detected by the silver halide camera or video camera. This is because, in silver-halide cameras, especially lens-shutter cameras, the viewfinder is independent of the photographic lens, and the magnification is small, so the amount of camera shake cannot be clearly seen with the naked eye. Furthermore, for both lens-shutter cameras and eye-reflex cameras, it is extremely difficult to understand how the amount of camera shake in the viewfinder will affect the resulting photo due to various conditions such as the aperture at the time of shooting, shutter speed, and focal length of the lens. It had become.

Furthermore, since video cameras track subjects with their eyes, there is no time to worry about camera shake.

In order to solve this problem, Japanese Patent Application Laid-Open No. 55-84925, Japanese Patent Publication No. 62-37771, Japanese Patent Publication No. 62-37772, etc. have been proposed. These devices are configured to detect vibrations using a vibration accelerometer and display a warning by comparing the amount of camera shake with a reference signal corresponding to the shutter speed.

In addition, in Japanese Patent Publication No. 62-27686, the shift detector is limited to a method in which blur is detected by the shift in the output phase of the light passing through the objective lens system using two optical sensor groups, and the focus of the photographing lens is It is configured to generate a reference signal including distance and display a warning.

Furthermore, JP-A-58-70217, JP-A-59-22
No. 2823 also makes a completely similar proposal.

In addition, in JP-A-58-70217, a warning is displayed if camera shake exceeds the permissible amount for a certain period of time, and the content is added to change the permissible amount of camera shake while holding the camera and releasing the shirt. . Also,
JP-A No. 59-222823 also adds the content of selecting from two sets of shutter speeds and shifting to flash mode as a countermeasure against camera shake.

However, all of these proposals are configured to display a camera shake warning by comparing the amount of camera shake with a predetermined reference signal (tolerable camera shake value).In other words, there are two options: display or not. Although the photographer can tell whether or not the camera is currently shaking, it is difficult to know how much more to suppress the camera shake.Furthermore, the camera shake warning display is turned off after the photo is taken. However, even if the light was on, the amount of light was unknown, making it difficult to learn lessons for future shooting.

(Object of the Invention) The object of the present invention is to provide a camera shake display device that allows you to visually see how much the current amount of camera shake is and how much more you need to suppress to bring it within the allowable range. The goal is to provide the following.

Another object of the present invention is to provide a hand shake display device for a camera that can display whether or not the previous photographing was successful or not, and which can serve as a lesson for the next photographing.

(Features of the Invention) In order to achieve the above object, the present invention includes a sensor that detects the amount of camera shake in two-dimensional directions, and a camera shake detection means that detects the amount of camera shake in each direction from the output from the sensor. , comprising analog information output means for outputting respective camera shake amounts from the reader camera shake detection means as analog information, and camera shake display means for displaying a trajectory by dots in accordance with each piece of information from the analog information output means, , the camera shake display is not simply a display of whether or not the camera is shaking, but is characterized by displaying a trajectory over a two-dimensional area.

Further, the display control means stores each information from the analog information output means while the shutter is open, and outputs the information to the camera shake display means for a predetermined period of time after the end of shooting to cause the display to be performed. The feature is that the amount of camera shake in the previous shooting is informed after the shooting is finished.

Furthermore, the camera shake display means is equipped with a tolerance frame display means that displays a camera shake tolerance frame using dots, and a variable display magnification that changes the display magnification of the camera shake display means according to the magnitude of camera shake and shooting information at that time. The present invention is characterized in that it includes means for clearly determining the magnitude of camera shake during photographing.

(Example of the invention) Hereinafter, the present invention will be explained in detail according to illustrated embodiments.

FIG. 1 is a block diagram showing an embodiment of the present invention. In the diagram, 1 is a sensor control drive circuit that indicates camera shake information, 2 is a sensor for detecting camera shake built into the camera, and 3 is a block diagram showing an embodiment of the present invention. detects the amount of camera shake from the sensor output,
This is a camera shake amount detection circuit that is replaced as a camera shake displacement. 4
5 is a camera shake century versus displacement conversion circuit for converting the amount of camera shake in the camera shake amount detection circuit 3 into an absolute displacement, and 5 is a high speed A for converting the absolute displaced analog amount of the camera shake century versus displacement converter circuit 4 into a digital value. /D conversion circuit, 6 is a sequence control circuit that controls the camera's shooting operation and camera shake detection operation, and displays the camera shake data; 7 is a sequence control circuit that displays the camera shake data processed by the sequence control circuit 6 in a dot matrix display, which will be described later. A dot image display control circuit 8 is a drive circuit for the dot image display 9. 10.11.12 is an anti-shake system based on camera shake information, 12 is an anti-shake device for correcting camera shake by moving the actual photographic lens, and 11
1 is a photographic lens correction amount detection device that detects how far the photographic lens has actually moved, and 10 is a high-speed A/D conversion circuit that converts the amount of movement of the photographic lens into a digital value.

The operation of the present invention will be explained step by step using the block diagram configured as described above.

First, the sequence control circuit is attached to the outside of the camera and activated by a switch SWI operated by the photographer. When SW1 is turned on, the sequence control circuit 6 transmits a signal to the sensor control drive circuit 1, supplies power to the camera shake detection system, drives the sensor 2, and starts detecting actual camera shake. The value output from the sensor 2 is only the amount of camera shake detected by the camera shake amount detection circuit 3, but the meaning of the output signal differs depending on the sensor. For example, if it is an angular velocity sensor, it will output the angular acceleration induced during camera shake. In the case of a sensor such as a vibrating gyro, the angular velocity output of camera shake is detected, and in the case of a sensor that lowers a pendulum in the direction of gravity and detects camera shake based on the swing angle, the angular output of camera shake is detected and output. In order to convert these into camera shake amount and camera shake displacement in the absolute displacement conversion circuit 4, the signal from the camera shake amount detection circuit 3 is first integrated or twice integrated, and then converted into an absolute displacement, and then converted into an absolute displacement using high-speed A/D conversion. It is converted into a digital value by the circuit 5, and taken into the sequence control circuit 6 as the amount of camera shake. Based on the data, the sequence control circuit 6 transfers the data to the dot image display control circuit 7 as camera shake display data in the X and Y directions, and also sets the camera shake tolerance frame, displays the camera shake trajectory when SW1 is on, and while the shutter is open. Transfers display switching data between camera shake trajectory display and display mode data when the anti-vibration mechanism (anti-vibration system) is activated or not activated. Furthermore, time management is also performed so that the image is displayed only for a predetermined period of time after the photographer operates the switch (after the shooting is completed). Based on these data, the dot image display control circuit 7 decodes the signal to display it on a two-dimensional dot matrix, and the dot image display drive circuit 8 converts it into a drive signal for an LCD or the like to display the dot image. A camera shake trajectory display and the like are displayed on the display 9.

The above is the flow of a series of operations, but now we will discuss camera shake and its display during photography in a camera equipped with an anti-shake system.

The image stabilization device 12 causes the photographic lens to work in the direction of correcting camera shake, but the amount of movement is detected and the sequence control circuit 6 compares the actual amount of camera shake with the amount of correction by the photographic lens system to determine how much. Determine whether the anti-vibration effect has been achieved. The results are then displayed as trajectory data as runout data.

FIG. 2-1 shows an example of camera shake data when aiming at a stationary subject. The horizontal axis represents time, and the vertical axis represents the camera shake plate. When SW1 is turned on, sensor 2 starts operating and measurement starts at the same time. It can be seen that the camera was slightly shaken vertically as time passed, but now it is shaken significantly as the photographing operation is performed by turning on the release switch (SW2).

FIG. 2-2 shows a two-dimensional camera shake trajectory. As time passes, a trajectory is displayed in sequence. The part written in bold indicates the amount of camera shake during shutter release.

Figures 2-3 show how much camera shake occurs when the shutter is actually open during the photographing operation. ΔX in the diagram
is moving in one dimension.

FIGS. 2-4 show how the subject is captured on the film when the camera shakes while the shutter is open. As shown in FIGS. 2-3, since the amount of camera shake changes over time, the subject is photographed as it moves from the shutter open position to the shutter closed position.

Next, FIG. 3 shows a camera shake detection system using a vibrating gyroscope as an example of the actual sensor 2.

In FIG. 3, 51 is an actual bar-type vibrator, which is driven to vibrate by a piezoelectric element 54a and whose angular velocity is detected. Further, the vibrator 51 is held by support members 52 and 53. This support member 52, 53 is the vibrator 51
It is desirable to provide this at the section of the page. These 51-54
The camera shake sensor 2 is configured by the following.

55 is a bar-type vibrator drive circuit, which drives the vibrator 51 with a piezoelectric element 54a. Reference numeral 57 denotes a resonance point detection circuit, which detects and holds the resonance frequency of the vibrator 51 (the minimum frequency at which the vibrator reaches its maximum amplitude at the same driving voltage). 58, the vibrator 51 is connected by the circuit 55.
This is a bar-type vibrator displacement signal detection circuit that detects how much vibration the bar-type vibrator is vibrating.Based on this signal, the resonance point detection circuit 57 sets the amplitude to a constant value and normalizes the angular velocity signal. 59 is a vibration stabilization circuit that detects whether or not the amplitude of the vibrator 51 has stabilized after the constant amplitude control circuit 56 attempts to keep the amplitude of the vibrator 51 constant after finding the resonance point of the vibrator 51. This circuit controls the analog switch 64 and starts transmitting the camera shake angular velocity signal only when the amplitude is appropriate, and also transmits the start of camera shake signal detection to the sequence control circuit 6. These 55~
59 constitutes the sensor control drive circuit 1 shown in FIG.

Reference numeral 60 denotes a demosimulator and fill 2 circuit that detects only the angular velocity component due to camera shake from the signals of piezoelectric elements 54c and 54d that are perpendicular to the drive piezoelectric element 54a of the vibrator 51. compensation, offset compensated. 60 and 61 constitute the camera shake amount detection circuit 3 shown in FIG. and is transmitted to the camera shake amount line versus displacement conversion circuit 4 at the next stage.

Reference numeral 62 denotes an integrating circuit, and the output from the camera shake amount detection circuit 3 becomes a camera shake displacement through this circuit, and is converted by a normalization circuit 63 into a camera shake displacement amount representing how many micrometers the actual displacement has occurred. 62. According to 63, the camera shake 1 absolute displacement conversion circuit 4
It consists of

Further, 65 is a power supply for the camera shake detection system, 66 is a power-on control circuit that controls whether or not to supply power to the camera shake detection system from the power supply 65, and 67 is a signal from the power-on control circuit 66 to initialize the camera shake detection system. This is the initial setting circuit to
Each of these circuits is omitted in FIG.

Next, the actual operation of the camera shake detection system configured as described above will be explained with reference to the flowchart shown in FIG.

SW is activated by the photographer's operation such as pressing the release button halfway.
When I is turned on, a start signal from the sequence control circuit 6 is received (#101). Then, the power-on control circuit 66 starts supplying power to the camera shake detection system from the power supply 65 (#102), and at the same time instructs the initial setting circuit 67 to send an initial setting signal (#103). Based on this signal, all circuits of the camera shake detection system are reset. After being reset, the bar type vibrator drive circuit 55 sets the voltage according to the initial setting value (8104), and after setting the vibrator drive frequency to the initial setting value (#105), the piezoelectric element 54a
is driven to cause the vibrator 51 to vibrate. Due to the vibration of the vibrator 51, the piezoelectric element 54b, which forms a 180° pair with the driving piezoelectric element 54a, outputs the vibration state of the vibrator 51 (#10
6) From this signal, the bark vibrator displacement signal detection circuit 58 detects the displacement of the vibrator 51 (#107). Next, a resonance point detection circuit 57 determines whether or not that frequency is a resonance point.
If it is a resonance point, the vibration frequency is memorized and fixed, and if it is not a resonance point, the vibrator driving frequency is changed again (#109), and the same operation is repeated until a resonance point is found.

Next, when the resonance frequency is detected, the amount of displacement of the vibrator 51 is detected again (#110), and it is determined whether the amount of displacement is a predetermined amount (#111). If the resonance frequency is different, the driving voltage of the piezoelectric element 54a is changed. (#112) and repeat until a predetermined displacement amount is reached.Then, in order to wait for the vibration of the vibrator 51 to stabilize and to wait for the drift to stabilize, the vibration stabilization determination circuit 59 switches the analog switch 64 after a certain period of time (#113). Turn on.

Next, the operation when camera shake actually occurs will be explained.

Here, the principle of angular velocity detection using a vibrating gyroscope has already been explained, so a detailed explanation will be omitted. However, when a force is applied perpendicularly to the vibration direction of the vibrator 51, which is stably vibrating, Coriolis causes the force to change in the vibration direction. Since a force is generated in the vertical direction, the force can be detected by the piezoelectric elements 54c and 54d (#114).The demodulator & filter circuit 60 detects only the pure angular velocity component from this signal (#114).
#115. #116) L, output to the compensation circuit 61. As a result, the signal becomes a signal from which amplifier offset, temperature drift, etc. have been removed (#117), and then integration is performed to obtain an angular component (displacement component). At that time, the detection band of the camera shake detection system currently being performed should be set using the signal from the sequence control circuit 6 #118).
Set the integral constant accordingly (#119.#120
) 0 For example, when the shutter speed is fast (i.e. when it is bright)
(#119), the integral constant is made smaller so that it can respond immediately to the release, and conversely, when the shutter speed is slow, that is, when it is dark, the photographer is warned and asked to wait for the release, and the integral constant is made smaller. Thick L (#12o)
, even slow camera shake can be detected. After converting the angular velocity signal into an angle signal (#121), the normalization circuit 63 normalizes it (#122) l, and sends the high speed A to the sequence control circuit 6 as a hand shake displacement amount (hand shake data).
/D conversion and transmission (#123).

Thereafter, it is determined whether a camera shake detection stop signal has been received from the sequence control circuit 6 (#124), and if it has not been received, the process returns to #110 and the same operation is performed again. When the sequence control circuit 6 sends a camera shake detection stop signal due to SWI off or the end of shooting, etc., this is detected and #124
), the drive of the vibrator 51 is stopped (#125), the power supply from the power source 65 is cut off, and the camera shake detection operation is ended.

5-1 and 5-2 are flowcharts showing how the camera shake data obtained as described above is displayed in the camera sequence.

When the photographer presses the release switch halfway, SWl turns on (#201), and the sequence control circuit 6 switches to D.
Detects the status of various switches indicating preparation for shooting, such as the X code and T/W switch (#202), and clears the display content of the dot image display 9 that was displayed before the release (#203). Next, a power supply check (BCI) for camera operation is performed (#204), and then a power supply check (BO2>) for the camera shake detection operation system is performed.

If BCI) is not OK (#206), a warning display (1) is displayed and LED 1 in Figure 1 is lit (#206).
207), if BO2> is not OK (12
08), a warning display (2) is displayed, and the LED 2 is turned on (#209). In either case, the subsequent sequence operation is not performed.

<BCI> is OK (#206), (BO2) is also OK
(#208), the next step is distance measurement operation (#210) to measure the distance to the subject, and photometry operation (#210) to measure the brightness of external light.
#2LL) and calculates the data necessary for shooting (#212). At this time, if it is determined that strobe photography is being done because it is dark or the strobe is forced to fire (#213), the strobe has not been fully charged. If not (#216), the camera moves to flash charging operation (#217), and when flash charging is completed (#216), the display magnification of the amount of camera shake displacement is displayed based on shooting information such as shutter speed, lens focal length, and T/W. In addition to performing calculations (#214), a camera shake permissible frame for the dot image is displayed (#215).

In this example, the camera shake tolerance frame (
Assuming that the amount of camera shake displacement (as shown in Figure 6) is set to a certain value, the method converts the amount of camera shake displacement at that time using a predetermined amplification factor based on the calculation result of the camera shake tolerance determined in #214 above. 6 examples where λ is taken, the focal length of the lens is 1
00mm, full size, no strobe, EVIO, if you can tolerate camera shake of 0.1mm on the film surface, and if you set the camera shake tolerance frame at 4cm on the dot image display 9, then The magnification is 400x, which is approximately 14 times the full size when set to half size.
I'll have to reset it to 60x.

If you organize this, it will look like this: However, ρ is the camera shake tolerance on the full-size film surface, L is the size of the camera shake tolerance frame of the dot image display 9, F is the focal length of the lens (magnification when 100 mm is 1), and H is the film This is the angle of view size (area ratio when full size is 1).

In other words, the smaller the set camera shake tolerance value β is, the longer the focal length of the lens, and the smaller the film angle of view, the larger the magnification A becomes. Therefore, even a slight camera shake will be displayed in a large size on the dot image display 9, as it will greatly affect the photographing.

When these preparatory operations are completed, actual camera shake amount detection and camera shake locus display are started.

First, the operation when the anti-vibration mechanism is not activated (or when the anti-vibration mechanism is not provided) will be explained.

As described above, the camera shake displacement amount is output by the camera shake detection system (#218). Next, the camera shake displacement amount that has been subjected to high-speed A/D conversion and taken into the sequence control circuit 6 is amplified to a predetermined magnification 6 After that, the sequence control circuit 6 determines whether or not it can be displayed on the dot image display body 9.# 2
19) If the amount of camera shake displacement is so large that it falls outside the display range, the display magnification is reduced (#220) and the camera shake tolerance frame is also reduced (#221). After that, multiply the amount of camera shake displacement by a predetermined display magnification, convert it to camera shake display data #232), and store it as camera shake display data #23
3) Send camera shake display data to the dot image display control circuit 7 (#234). Then, the dot image display control circuit 7 displays the trajectory of camera shake on the dot image display 9 via the dot image display drive circuit 8 (#235). Here, it is determined whether there is data displayed before the predetermined time T by counting the time and the latest display time (#236), and if there is the old display data, the trajectory data is deleted ( #237).

The above #218 to #237 is the release switch S
Repeat this until W2 is turned on.

Thereafter, when SW2 is turned on (#238), control is performed to advance the photographing lens to a predetermined focal position (#239), and the shutter is opened for photographing (#240). At this time, all camera shake data while the shutter is open is stored in the sequence control circuit 6 (#241), converted as camera shake display data (#242), and then transmitted to the dot image display control circuit 7 (#244). In order to indicate that the camera shake display data is different from the previously transmitted camera shake display data, a camera shake display form (described later in FIGS. 6-3 and 6-4) is set (#243). After that, the camera shake trajectory is displayed based on the camera shake display data (#245), the data is imprinted (#246), and the film is advanced (#247) to determine how much influence the camera shake while the shutter is open will have when printed on the print plate. (#248) Display it as well (for example, "OK" display in Figure 6-4) L (
#249), and when a predetermined period of time has elapsed after the end of photography, these displays are turned off (#252).

In addition, when the anti-vibration mechanism is operating, as shown in #222, a power supply check (BO2) is performed to see if the power supply voltage is sufficient to establish the anti-vibration mechanism.
If 2) is NG (#223), the warning display (3) is displayed (#230), the anti-vibration mechanism is stopped, the display mode is set to the camera shake display mode without anti-vibration (#231), and (BO
If 2) is OK (#223), cancel the warning display (3) (#224). If the anti-vibration switch is on (#22)
5) Perform the anti-vibration operation (#228), set the display mode to the image stabilization display mode (#229), and if the anti-vibration SW is off (#225), stop the anti-vibration (#225). 226
), set the display mode to non-shake mode (#227
)do.

FIGS. 6-1 to 6-4 are examples of camera shake locus displayed by the dot image display 9. FIG.

Figure 6-1 shows the form of camera shake display when anti-vibration is not activated (s
wi on, release switch waiting).

As for camera shake, while aiming at the center, the camera shake tolerance limit 9a is slightly exceeded when holding the camera. However, since it does not go outside the display frame 9b, the camera shake display data is displayed at a predetermined magnification determined from the shooting.

FIG. 6-2 shows an example of a camera shake trajectory displayed by the dot image display 9 when the amount of camera shake is so large that it goes outside the camera shake tolerance frame 9a. Compared to FIG. 6-1, the amplification factor between the camera shake displacement amount and the display data is 1/3.

6-3 and 6-4 are examples of camera shake locus display by the dot image display body 9 in different display modes.
In Figure 3, it is shown that image stabilization is in progress, the camera shake trajectory itself is also displayed as a large dot, and camera shake tolerance frame 9a is also displayed.
At the same time, the amount of deflection on the film surface determined by subtracting the amount of correction by the image stabilization system from the amount of camera shake displacement on the film surface is displayed at a larger amplification factor than a predetermined amplification factor.

FIG. 6-4 shows a camera shake locus display after the shutter is actually released from release standby and the shutter is opened. Here, while the shutter is open, the display is blinking as shown. These displays are continued for a predetermined period of time after the end of photographing, as shown in the flowcharts #249 to #251 in FIG. 5, and are erased after the elapse of this time.

According to this embodiment, the amount of camera shake can be measured by dot image display 9.
In addition to displaying the trajectory in two dimensions, the camera continues to display the amount of camera shake while the shutter is open for a predetermined period of time after the shooting is completed, so the camera shake status of the photographer can be clearly seen at a glance, and the currently shot photo can be printed. This is very effective because you can see how much camera shake occurs when the image is developed, and the degree of influence. Furthermore, since the display format is different depending on when the release switch is on standby, when the shutter is open, and when vibration isolating, the display will be easier to understand, and the display amplification factor will be automatically changed in case of large camera shake. This prevents part of the display from being vignetted in the case of such a large hand shake, and allows the user to always check the amount of hand shake from the display.

(Correspondence between the invention and the embodiments) In this embodiment, the camera shake detection circuit 30 and camera shake amount line to displacement conversion circuit 4 serve as the camera shake detection means of the present invention, the sequence control circuit 6 serves as the analog information output means, and the dot image display Control circuit 7. Dot image display drive circuit 8
．． The dot image display body 9 serves as a camera shake display means, and the fifth
The portion that performs the operations #214 and #219 to #221 in Figure-1 corresponds to the display magnification variable means, and the portion that performs the operation #215 corresponds to the allowable frame display means.

(Modified example of the invention) In this embodiment, the LED blinking period, lighting brightness, sound volume of the sounding body, etc. are changed in an analog manner depending on the amount of camera shake at that time, but this is not limited to this. Without,
For example, change the color of L'E D in an analog way, OK
Green when the camera is not working, red when it is NG (change in color), change the sound frequency of the sounding body, vibrate only the outside of the camera or the grip, and transmit it to the palm of the hand while holding it (depending on the amount of camera shake). (change the strength)
You may also do this.

Furthermore, depending on the amount of camera shake at that time, the bar may be displayed in one dimension or two dimensions, or the trajectory of camera shake as shown in Figure 2-2 may be displayed. It can be displayed in an easy-to-understand manner.

(Effects of the Invention) As explained above, according to the present invention, there is provided a sensor that detects the amount of camera shake in two-dimensional directions, and a camera shake detection means that detects the amount of camera shake in each direction from the output from the sensor. , comprising analog information output means for outputting respective camera shake amounts from the reader camera shake detection means as analog information, and camera shake display means for displaying a trajectory by dots in accordance with each piece of information from the analog information output means, , the camera shake display is not simply a display of whether or not camera shake is occurring, but is performed over a two-dimensional trajectory display, and the camera shake display means is provided with a tolerance frame display means for displaying a camera shake tolerance frame using dots; Furthermore, a display magnification variable means is provided for changing the display magnification of the camera shake display means in accordance with the magnitude of camera shake and photographing information, so that the magnitude of camera shake at the time of photographing can be clearly determined. From this, it is possible to visually determine how much the current amount of camera shake is and how much more it needs to be suppressed to stay within the allowable range.

Further, the display control means stores each information from the analog information output means while the shutter is open, and outputs the information to the camera shake display means for a predetermined period of time after the end of shooting to cause the display to be performed. Since the amount of camera shake in the previous shooting is displayed after the end of the shooting, it is possible to display whether or not the previous shooting went well or not, and furthermore, it can be used as a lesson for the next shooting.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2-1
2-4 are diagrams for explaining camera shake, FIG. 3 is a block diagram showing an example of the detailed configuration of FIG. 1, FIG. 4 is a flowchart showing the operation of the embodiment in FIG. 1, and FIG. 5
Figures -1 and 5-2 are flowcharts showing the operation of the camera in which the device in Figure 1 is installed, and Figures 6-1 to 6-4 are diagrams showing examples of camera shake locus display in the embodiment of the present invention. It is. l...Sensor control drive circuit, 2...Sensor, 3...Camera shake amount detection circuit, 4...
- Shake amount line versus displacement conversion circuit, 6... Sequence control circuit, 7... Dot image display body control circuit, 8... Dot image display body drive circuit,
9... Dot image display body.

Claims (4)

[Claims] (1) A sensor that detects the amount of camera shake in two-dimensional directions, a camera shake detection means that detects the amount of camera shake in each direction from the output from the sensor, and analog information for each camera shake amount from the camera shake detection means. What is claimed is: 1. A hand shake display device for a camera, comprising: an analog information output means for outputting information from the analog information output means; and a hand shake display means for displaying a trajectory using dots according to each piece of information from the analog information output means. (2) A display control means for storing each information from the analog information output means while the shutter is open, and outputting the information to the camera shake display means for a predetermined period of time after the end of photography to display the information. camera shake display device. (3) The camera shake display device according to claim 1 or 2, further comprising an allowable frame display means for displaying a dot-based shake allowable frame in the hand shake display means. (4) A camera shake display according to claim 1, 2 or 3, further comprising a display magnification variable means for changing the display magnification of the camera shake display means according to the magnitude of the camera shake at that time and photographing information. Device.