JP2004260525A - Control device for blurring correction and image pickup apparatus with blurring correction function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image pickup apparatus by which an image without blurring can be speedily taken. <P>SOLUTION: A digital camera is provided with a blurring detector (70) and a blurring correcter (80). The blurring detector (70) is provided with an angular rate sensor (71) composed of a piezoelectric gyroscope, two high-pass filters (73a and 73b), two integrators (74a and 74b), and a selecter (75) which selects one of correction signals outputted by the integrators (74a and 74b). Cutoff frequencies of the filter (73b) and the integrator (74b) are lower than those of the filter (73a) and the integrator (74a). The sensor (71), filters (73a and 73b) and the integrators (74a and 74b) go into action at the start of use of the digital camera. When an image to be displayed as a live view is taken, blurring is corrected according to a correction signal of the integrator (74a). When an image to be recorded is taken, blurring is corrected according to a correction signal from the integrator (74b). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image capturing apparatus having a function of capturing an image in which blur has been corrected, and a control apparatus for the image capturing apparatus.
[0002]
[Prior art]
2. Description of the Related Art There has been proposed an imaging apparatus that includes an angular velocity sensor and an angular acceleration sensor, detects blur by the sensor, and captures an image in which the blur is corrected. As a method of correcting the blur, the photographing optical system includes a correcting optical element, and the correcting element is displaced in a direction perpendicular to the optical axis of the photographing optical system, or its orientation is determined by using a prism as the correcting element. There is an optical method of changing the wavelength. In a digital camera, there is an optical method by displacing an image sensor, and further, a method of performing a software correction in processing a signal representing a captured image is also possible. In the configuration including the sensor, the correction is performed based on the direction and the magnitude of the blur detected by the sensor.
[0003]
In a digital camera, a live view is provided by repeatedly taking an image and displaying the taken image, and when a recording instruction is given, an image for recording is taken and recorded on a recording medium. I have. The user can perform framing while watching the live view, and can give an instruction to capture a recording image at any time. In such digital cameras, when capturing an image to be displayed as a live view, the time required for correction is reduced by reducing the degree of correction, the display time interval is kept short, and the image for recording is stored. In some shootings, the correction is sufficiently performed to shoot a high-quality image.
[0004]
The output signal of the angular velocity sensor or the angular acceleration sensor is a signal representing the magnitude of the blur by integration. However, an angular velocity sensor or an angular velocity sensor is generally formed of a piezoelectric gyro, and its output signal drifts after the start of energization or after a reset, and requires a certain amount of time to be stabilized. Therefore, immediately after the current supply to the sensor is started or immediately after the sensor is reset, the signal for correcting the blur does not have an accurate value, and the blur cannot be properly corrected. There is a possibility that the correction is excessive and the correction has an adverse effect.
[0005]
The degree to which the instability of the output signal of the sensor appears in the signal for correcting the blur depends on the cutoff frequency of the integrator that integrates the output of the sensor and the filter that guides the output signal of the sensor to the output. If the cutoff frequency is lowered, it is possible to correct slow blurring, and the correction performance is improved, but the drift of the output signal of the sensor tends to appear in the calculation result. On the other hand, if the cut-off frequency is increased, the correction performance is reduced although the influence of the drift of the output signal of the sensor is reduced.
[0006]
Japanese Patent Application Laid-Open No. H11-27573 proposes that the cutoff frequency of a filter is made variable and the cutoff frequency of the filter is changed between a predetermined period immediately after the start or reset of the sensor and another period. During the period when the output of the sensor is unstable, the inaccuracy of the correction can be reduced by increasing the cutoff frequency of the filter.
[0007]
[Patent Document 1] JP-A-11-27573
[0008]
[Problems to be solved by the invention]
However, not only the output signals of the angular velocity sensor and the angular acceleration sensor, but also the integrator itself for integrating those outputs, the operation result is not stable unless some time has passed after the start of energization or after the reset. Also, if the cutoff frequency of the filter is suddenly changed, it is necessary to reset the integrator. Therefore, in the method disclosed in the above publication, it is impossible to correct the blur accurately until a time obtained by adding a time until the output of the sensor is stabilized and a time until the integrator is stabilized has elapsed. Become. Furthermore, since the time required for the operation result of the integrator to stabilize becomes longer as the cutoff frequency of the integrator itself becomes lower, it is attempted to lower the cutoff frequency of the integrator in order to increase the accuracy of the signal for correction. As a result, the waiting time until accurate correction becomes possible is further increased.
[0009]
If the cutoff frequency of the filter is gradually changed, there is no need to reset the integrator. However, the calculation result of the integrator is not stable during the period when the cutoff frequency of the filter is changing. Therefore, even if the cutoff frequency of the filter is gradually changed, it is possible to correct the blur accurately. The time to become can not be shortened too much.
[0010]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a control device that can quickly output a stable signal for correcting blur. It is another object of the present invention to provide an imaging device capable of quickly capturing an image without blur.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a control device that outputs a correction signal for correcting a blur includes a detecting unit that detects the blur, and a control unit that corrects the blur based on the blur detected by the detecting unit. A plurality of generating means for respectively generating the correction signals and stabilizing the generated correction signals with different times, a control means for operating the plurality of generating means in parallel, and a correction signal generated by the plurality of generating means. And selecting means for selecting and outputting one of the correction signals.
[0012]
This control device does not generate a correction signal by a single generation unit, but generates a plurality of correction signals by a plurality of generation units and outputs any of the correction signals. The time required for stabilizing the correction signal differs for each generation unit, and since each generation unit operates in parallel, a plurality of correction signals include those that are stabilized early, and the detection unit It is possible to output a stable correction signal immediately after stabilization.
[0013]
Here, the longer the time required for stabilizing the generated correction signal, the higher the accuracy of the stabilized correction signal can be. This makes it possible to select a correction signal according to the required correction accuracy.
[0014]
In order to achieve the above object, according to the present invention, an image pickup apparatus that detects a shake and captures an image in which the shake is corrected includes the above control device, and detects the shake by the control device. It is assumed that the blur is corrected in accordance with the correction signal output from the. With this imaging device, the characteristics of the control device can be utilized to quickly capture an image in which the blur has been corrected.
[0015]
It is preferable to provide an operation unit operated to instruct the use of the image to be captured, and to switch the correction signal to be selected by the selection unit in accordance with the operation of the operation unit. For example, if the digital camera captures an image for recording when the release button is operated while the live view is displayed, the correction signal is switched according to the operation of the release button. Since the correction signal is quickly stabilized, it is possible to appropriately correct the blur immediately after the start of the live view display. The longer the time required for stabilization, the higher the accuracy of the correction signal after stabilization, and by switching to a higher accuracy correction signal by operating the release button, it is possible to take a picture for recording. It is also possible to sufficiently correct blur.
[0016]
It is preferable that a main operation unit operated to instruct the start of use be provided, and the control unit cause all the generation units to start operation when the start of use is instructed by operating the main operation unit. By causing the generation unit to start operation when the use of the imaging apparatus is started, the correction signal is stabilized before the actual shooting is performed, and blurring can be appropriately corrected at the time of shooting.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a digital camera according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 schematically shows an optical configuration of a digital camera 1 according to the present embodiment. The digital camera 1 has a photographing optical system 10, an image sensor 20, and a correction optical unit 30. 1A is a side view, and FIG. 1B is a front view of the correction optical unit 30.
[0018]
The photographing optical system 10 is a zoom optical system, and includes zoom lens groups 11 and 12 for changing a focal length, and a focus lens group 13 for focus adjustment. The imaging optical system 10 also includes a correction lens 14 for correcting blur. The correction lens 14 is movable in a direction perpendicular to the optical axis AX of the imaging optical system 10.
[0019]
The image sensor 20 is a CCD type area sensor. The image sensor 20 is arranged perpendicular to the optical axis AX of the photographing optical system 10 so that the optical axis AX passes through the center. The imaging device 20 is fixed to a substrate 22 provided with a drive circuit, and an optical low-pass filter 21 is attached to a light receiving surface.
[0020]
The correction optical unit 30 includes two bases 31 and 32, two actuators 33 and 34, a lens support arm 35 fixed to the correction lens 14, and a position sensor 36. The base 31 is fixed to a lens barrel (not shown) that houses the photographing optical system 10. Hereinafter, the base 31 is referred to as a fixed base. The base 32 is held by the fixed base 31 and is movable in the horizontal direction as indicated by an arrow H. Hereinafter, the base 32 is referred to as a movable base. The actuator 33 is attached to the fixed base 31, and moves the movable base 32 in the horizontal direction. The actuator 34 is attached to the movable base 32, and moves the lens support arm 35 in the vertical direction as shown by the arrow V. Therefore, the correction lens 14 can be displaced in any direction perpendicular to the optical axis AX of the photographing optical system 10.
[0021]
The position sensor 36 detects the position of the lens pointing arm 36 to detect the position of the correction lens 14 in a plane perpendicular to the optical axis AX of the imaging optical system 10. Instead of including the position sensor 36, the position of the correction lens 14 may be detected by counting drive pulses output by the actuators 33 and 34.
[0022]
FIG. 2 schematically shows a circuit configuration of the digital camera 1. The digital camera 1 includes a control unit 40, a timing generator 51, a lens driving unit 52, a photometric unit 53, an analog processing unit 54, an A / D converter 55, an image processing unit 56, and an image memory 57. The control unit 40 includes a microcomputer, and controls the operation of the entire digital camera 1. The timing generator 51 supplies a signal indicating operation timing to the image sensor 20. The lens drive unit 52 controls the focal length by moving the zoom lens groups 11 and 12 of the photographing optical system 10, and adjusts the focus by moving the focus lens group 13. The photometric unit 53 detects the brightness of the imaging target used to determine the exposure time (electronic shutter speed) of the image sensor 20.
[0023]
The analog processing unit 54 performs processing such as correlated double sampling and automatic gain adjustment on the analog signal output from the image sensor 20, and the A / D converter 55 converts the analog signal into a digital signal. The image processing unit 56 performs various processes such as black level adjustment, white balance adjustment, and γ correction on the digitized output signal of the image sensor 20 to generate image data representing an image captured by the image sensor 20. I do. The image memory 57 temporarily stores image data.
[0024]
The digital camera 1 further includes a display unit 58, a recording unit 59, a compression / decompression unit 61, an operation unit 62, and a power supply unit 65. The display unit 58 includes a liquid crystal display (LCD), and displays various information such as a captured image and operation guidance. A live view is provided by repeating photographing of an image by the image sensor 20 and display of the image by the display unit 58. The recording unit 59 records image data on a memory card 60 which is a removable recording medium, and reads out image data from the memory card 60. The compression / decompression unit 61 compresses image data recorded on the memory card 60 and decompresses image data read from the memory card 60. The image represented by the image data read from the memory card 60 can be reproduced and displayed on the display unit 58. The power supply unit 65 includes a rechargeable battery, and supplies power to a part that operates using power.
[0025]
The operation unit 62 includes a main switch 63, a release switch 64, and other members operated by the user, and a switch interlocked with them. The main switch 63 is operated to start and stop power supply to each part of the digital camera 1, that is, to instruct start and end of use of the digital camera 1. The release switch 64 has two contacts. One half of the contact is closed when the interlocked operation button is half-pressed to generate an S1 signal, and the other contact is closed when the operation button is fully depressed to generate an S2 signal. The S1 signal instructs the display of a live view, the detection of the brightness of a photographing target, and the start of focus adjustment of a photographing optical system, and the S2 signal captures an image for recording and records the image data on the memory card 60. Instruct.
[0026]
The digital camera 1 further includes a shake detection unit 70 and a shake correction unit 80 for correcting a shake and capturing an image without shake. The blur correction unit 80 includes the correction optical unit 30 described above. FIG. 3 schematically illustrates the configurations of the shake detection unit 70 and the shake correction unit 80. The blur detection unit 70 includes an angular velocity sensor 71, an A / D converter 72, two high-pass filters 73a and 73b, two integrators 74a and 74b, a signal selection unit 75, and a level setting unit 76. The angular velocity sensor 71 is composed of two piezoelectric gyros, and detects a horizontal angular velocity and a vertical angular velocity. The angular velocity sensor 71 outputs a signal representing the horizontal angular velocity and a signal representing the vertical angular velocity. These signals are collectively shown in FIG.
[0027]
The A / D converter 72 converts an analog signal output from the angular velocity sensor 71 into a digital signal. The digitized output signal of the angular velocity sensor 71 is supplied to both of the two high-pass filters 73a and 73b. The high-pass filters 73a and 73b transmit high-frequency components and block low-frequency components in the digitized output signals of the angular velocity sensor 71, respectively. The output signal of one high-pass filter 73a is provided to an integrator 74a, and the output signal of the other high-pass filter 73b is provided to an integrator 74b. The integrators 74a and 74b respectively integrate the output signals of the high-pass filters 73a and 73b to generate a correction signal indicating the magnitude (angle) of the blur of the digital camera 1.
[0028]
The signal selection unit 75 includes a switch that can take a state connected to the output terminal of the integrator 74a and a state connected to the output terminal of the integrator 74b, and according to an instruction given from the control unit 40, One of the correction signal from the integrator 74a and the correction signal from the integrator 74b is selected and output to the level setting unit 76. When capturing an image to be displayed as a live view (when only the S1 signal is given from the operation unit 62), the control unit 40 causes the signal selection unit 75 to select a correction signal of the integrator 74a, and to perform recording. When an image is taken (when the S2 signal is given), the signal selection unit 75 is caused to select the correction signal of the integrator 74b.
[0029]
The level setting unit 76 sets the level of the correction signal from the signal selection unit 75 so that the magnitude of the blur corresponds to the amount of movement of the correction lens 14. The amount of movement of the correction lens 14 required to correct the blur depends on the focal length of the photographing optical system 10, and therefore needs to be adjusted according to the focal length. For this reason, the control unit 40 adjusts the level to be set by the level setting unit 76 according to the focal length of the imaging optical system 10.
[0030]
The high-pass filters 73a and 73b have different cutoff frequencies. Also, the integration times of the integrators 74a and 74b are different, and therefore, their cutoff frequencies are also different. FIG. 4A shows the relationship between the cutoff frequencies of the high-pass filters 73a and 73b and the contribution to the correction of blur, and the relationship between the cutoff frequencies of the integrators 74a and 74b and the contribution to the correction of blur. 4 (b).
[0031]
The digital camera 1 is designed so as to be able to correct a speed fluctuation corresponding to a frequency of 0.1 Hz to 20 Hz when capturing an image for recording, and the cutoff frequency of the high-pass filter 73b and the integrator 74b is It is set slightly lower than 0.1 Hz. The digital camera 1 is also designed to correct the fluctuation of the speed corresponding to the frequency of 5 Hz to 20 Hz when capturing an image to be displayed as a live view, and the cutoff frequency of the integrator 74a is set to 5 Hz or less. It is set a little lower. The cutoff frequency of the high-pass filter 73a is slightly lower than 1 Hz.
[0032]
As shown in FIG. 3, the blur correction unit 80 includes a subtracter 81, a PID control unit 82, a D / A converter 83, a correction optical unit 30, and an A / D converter 84. The subtracter 81 subtracts the signal representing the position of the correction lens 14 detected by the position sensor 36 from the correction signal from the level setting unit 76, and supplies the signal after subtraction to the PID control unit 82. The PID control unit 82 includes a proportional control (P) unit, an integral control (I) unit, and a differential control (D) unit. These control units perform gain compensation, phase delay compensation, and phase lead compensation, respectively. Compensate for gain and phase. The D / A converter 83 converts the digital signal from the PID control unit 82 into an analog signal and provides the analog signal to the actuators 33 and 34.
[0033]
The actuators 33 and 34 move the movable base 32 and the lens support arm 35 to displace the correction lens 14 as described above. The position sensor 36 detects the position of the correction lens 14 and outputs an analog signal representing the position. The A / D converter 84 converts an analog signal from the position sensor 36 into a digital signal and supplies the digital signal to the subtractor 81. As described above, the blur correction unit 80 forms a feedback loop, and performs feedback control of the movement of the correction lens 14 based on the correction signal and the actual position of the correction lens 14.
[0034]
The shake detecting unit 70 from the angular velocity sensor 71 to the level setting unit 76 forms a part of the control device of the present invention. In the present embodiment, the control unit 40 of the digital camera 1 is configured to control the integrators 74a and 74b. However, a control unit that controls the integrators 74a and 74b is provided separately from the control unit 40. Alternatively, the control device may output a correction signal for correcting blur.
[0035]
The filter 73a and the integrator 74a for generating a correction signal for capturing an image for live view are not very suitable for correcting slow blur due to a high cutoff frequency. The time required for stabilization is short. On the other hand, the filter 73b and the integrator 74b that generate a correction signal when capturing an image for recording have a low cutoff frequency, and thus are also suitable for correcting slow blurring, but the calculation result of the integrator 74b is stable. The time required for conversion is long.
[0036]
In the digital camera 1, the combination of the filter 73a and the integrator 74a and the combination of the filter 73b and the integrator 74b are selectively used for capturing an image for live view and capturing an image for recording, and both the integrators 74a and 74b. In order to stabilize the calculation result as quickly as possible, the following control is performed.
[0037]
The control unit 40 causes all the components of the shake detection unit 70 to start operating when the start of use of the digital camera 1 is instructed by operating the main switch 63 of the operation unit 62. At this time, the signal selection unit 75 is caused to select the correction signal of the integrator 74a. When the S2 signal is generated, the correction signal of the integrator 74b is selected, and when the S2 signal disappears, the correction signal of the integrator 74a is selected.
[0038]
By operating the integrators 74a and 74b at the start of use, at the point when the S1 signal is generated, at least the correction signal of the integrator 74a is in a stable state, and based on the stable correction signal from the start of live view display. Blur can be corrected. Further, even when the integrator 74b is not stable at the time when the S1 signal is generated, the integrator 74b is in a stable state before the S2 signal is generated. In addition, blur can be corrected based on a highly accurate and stable correction signal.
[0039]
FIG. 5 shows an outline of the flow of processing relating to blur correction and image capturing in the digital camera 1. First, when the main switch 63 is operated (step # 105), the power supply from the power supply unit 65 is started to cause the angular velocity sensor 71 to start operating (# 110), and the integrators 74a and 74b are also operated. The operation is started (# 115). Next, it is determined whether or not the S1 signal has been generated by operating the release switch 64 (# 120). If the S1 signal has been generated, a correction signal (referred to as an S1 integrated value) of the integrator 74a from the shake detecting unit 70 is obtained. Is output (# 125), and a correction process based on the correction signal (referred to as S1 correction process) is performed (# 130). Then, an image is photographed (# 135), and the photographed image is displayed as a live view (# 140).
[0040]
Next, it is determined whether or not the S2 signal has been generated by operating the release switch 64 (# 145). If the S2 signal has not been generated, the process returns to step # 120. When the S2 signal is being generated, the shake detector 70 outputs a correction signal (referred to as an S2 integral value) of the integrator 74b (# 150), and performs a correction process (referred to as an S2 correction process) based on the correction signal. Perform (# 155). After the end of the S2 correction processing, an image for recording is photographed (# 160), and image data representing the image is compressed and recorded on the memory card 60 (# 165). After recording the image data, the process returns to step # 120.
[0041]
If it is determined in step # 120 that the S1 signal has not been generated, it is determined whether the end of use of the digital camera has been instructed by operating the main switch (# 170). Return to # 120. When the end of use is instructed, the power supply from the power supply unit 65 is stopped, and the process ends.
[0042]
The process of starting the operation of the angular velocity sensor 120 in step # 110 and the process of starting the operation of the integrators 74a and 74b in step # 115 can be performed after the determination of the presence or absence of the S1 signal in step # 120. However, in such a case, the blur correction is started before the correction signal (integral value S1) of the integrator 74a is stabilized, and the quality of the initial live view is likely to deteriorate. Therefore, it is preferable to start the operation of the angular velocity sensor 120 and the integrators 74a and 74b at the start of use as in the present embodiment.
[0043]
In the present embodiment, the image blur correction is performed by displacing the correction lens 14 including the correction lens 14 in the photographing optical system 10. However, the image blur correction is performed by displacing the image sensor 20. Is also good. In that case, for example, the imaging device 20 can be displaced by the correction optical unit 30 described above. FIG. 6 schematically shows the configuration. 6A is a side view, and FIG. 6B is a front view of the correction optical unit 30 including the image sensor 20. The correction lens 14 is omitted, and the imaging device 20 is held on a movable base 32 movable in the horizontal direction (arrow H) together with the substrate 22 and the optical low-pass filter 21 and movable in the vertical direction (arrow V). Is set. The movable base 32 is held on a fixed base 31 fixed to the main body of the digital camera.
[0044]
Although an example of a digital camera has been described here, the present invention is also applicable to a camera that captures an image by exposing a silver halide film to light. Further, in the present embodiment, the blur detection unit 70 (control means) that outputs a correction signal for correcting the blur is configured to include two sets of the high-pass filter and the integrator. It is good also as composition provided with more than a pair. By doing so, for example, when capturing an image to be displayed as a live view, it is possible to improve the accuracy of blur correction as time passes. Further, the characteristics of the high-pass filter and the integrator shown in FIG. 4 are merely examples that can be selected, and other characteristics may be used.
[0045]
【The invention's effect】
In a control device that outputs a correction signal for correcting a shake, a detection unit that detects a shake and a correction signal for correcting a shake based on the shake detected by the detection unit are generated as in the present invention. A plurality of generating means having different times required for stabilizing the generated correction signal, a control means for operating the plurality of generating means in parallel, and a correction signal selected from the correction signals generated by the plurality of generating means. Is provided, a stable correction signal can be output immediately after the detection means is stabilized.
[0046]
The longer the time required for stabilizing the correction signal to be generated, the higher the accuracy of the stabilized correction signal becomes, so that it becomes possible to select the correction signal in accordance with the required correction accuracy, thereby expanding the application. .
[0047]
An imaging apparatus that detects blur and captures an image with the blur corrected, including the above-described control device, detects the blur by the control device, and corrects the blur according to a correction signal output by the control device. Thus, a high-quality image in which blur has been corrected can be quickly taken.
[0048]
An operation unit that is operated to instruct an application of an image to be captured is provided, and the selection unit switches a correction signal to be selected according to an operation of the operation unit. It is possible to properly use the correction signal when capturing the image for the camera, and the blur can be appropriately corrected even immediately after the start of the live view display. The longer the time required for stabilization, the higher the accuracy of the correction signal after stabilization, and by switching to a higher accuracy correction signal by operating the release button, it is possible to take a picture for recording. It is also possible to sufficiently correct blur.
[0049]
If the main operation means operated for the instruction of the start of use is provided, and the control means causes all the generation means to start the operation when the start of use is instructed by the operation of the main operation means, actually, The correction signal is stabilized before shooting, and blur can be appropriately corrected during shooting.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing an optical configuration of a digital camera according to an embodiment of the present invention.
FIG. 2 is a diagram schematically showing a circuit configuration of the digital camera.
FIG. 3 is a diagram schematically illustrating a configuration of a shake detection unit and a shake correction unit included in the digital camera.
FIG. 4 is a diagram showing a relationship between a cut-off frequency of a high-pass filter and an integrator of a blur detection unit of the digital camera and a contribution rate to blur correction.
FIG. 5 is a flowchart showing an outline of a flow of processing relating to blur correction and image capturing in the digital camera.
FIG. 6 is a diagram schematically showing an optical configuration of a modified example of the digital camera for correcting a shake by displacing an image sensor.
[Explanation of symbols]
1 Digital camera
10 Shooting optical system
11, 12 zoom lens group
13 Focus lens group
14 Correction lens
20 Image sensor
21 Optical low-pass filter
22 Image sensor substrate
30 Correction optics
31 Fixed base
32 movable base
33, 34 Actuator
35 Lens support arm
36 Position Sensor
40 control unit
51 Timing Generator
52 Lens drive unit
53 Metering section
54 Analog processing unit
55 A / D converter
56 Image processing unit
57 Image memory
58 Display
59 Recorder
60 memory card
61 Compression / expansion unit
62 Operation unit
63 Main switch
64 release switch
65 Power supply section
70 Blur detector
71 Angular velocity sensor
72 A / D converter
73a, 73b High-pass filter
74a, 74b Integrator
75 signal selector
76 Level setting section
80 Image stabilizer
81 Subtractor
82 PID control unit
83 D / A converter
84 A / D converter

Claims (5)

In a control device that outputs a correction signal for correcting blur,
Detecting means for detecting blur;
A plurality of generating units each generating a correction signal for correcting a shake based on the shake detected by the detection unit, and a time required for stabilizing the generated correction signal is different;
Control means for operating a plurality of generating means in parallel;
A control device comprising: a selection unit that selects and outputs any correction signal from among the correction signals generated by a plurality of generation units. 2. The control device according to claim 1, wherein the longer the time required for stabilizing the generated correction signal, the higher the accuracy of the corrected correction signal. In an imaging device that detects blur and shoots an image with the blur corrected,
An imaging apparatus comprising: the control device according to claim 1, wherein the control device detects a blur and corrects the blur according to a correction signal output by the control device. The imaging apparatus according to claim 3, further comprising an operation unit operated to specify a use of an image to be captured, wherein the selection unit switches a correction signal to be selected according to an operation of the operation unit. Main operating means operated for instructing the start of use of the device is provided, and the control means causes all generating means to start operation when the start of use is instructed by operating the main operating means. The imaging device according to claim 3.

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