JP6942534B2 - Imaging device and its control method - Google Patents

Description

The present invention relates to the control of an imaging system including a plurality of runout detection units.

In a typical imaging device having an image blur correction function, a shake detection sensor such as an angular velocity sensor is used to detect a shake amount such as camera shake. Image blur correction on the image plane is performed by driving a part or all of the image pickup optical system based on the shake information of the image pickup apparatus by the shake detection sensor.

By the way, the image pickup apparatus includes various vibration sources such as a mirror, a shutter drive unit, an ultrasonic motor for controlling focus adjustment, and a stepping motor. Since the angular velocity sensor is very sensitive, the angular velocity sensor may be interfered with by vibration when vibration occurs in a cycle close to the drive frequency of the angular velocity sensor. If a noise component is superimposed on the output signal of the angular velocity sensor, proper image blur correction may not be performed. Patent Document 1 discloses a technique in which frequencies to be avoided are stored in advance and the rotation speed is controlled so that the apparatus does not resonate depending on the rotation speed of the disk.

Japanese Unexamined Patent Publication No. 2010-152961

However, although the prior art disclosed in Patent Document 1 is effective in a system in which the drive frequency is variable, it cannot correspond to a system in which the drive frequency is fixed.
An object of the present invention is to use a runout detection unit by using a runout detection unit having a drive frequency different from the drive frequency of the drive unit in an imaging device in which an external device having a drive unit can be attached to the main body. It is to improve the control accuracy of the function.

The device according to the embodiment of the present invention is an imaging device in which an external device having a drive unit can be attached to the main body, and is a communication means that communicates with the external device and the communication means acquired via the communication means. A control means for controlling a function using first and second runout detection means having different drive frequencies based on a range of drive frequencies of the drive unit is provided. The control means compares the range of the drive frequency of the drive unit with the range of the drive frequency of the first runout detection means and the range of the drive frequency of the second runout detection means, and drives the drive unit. When the frequency range and the drive frequency range of the first runout detection means overlap, the second runout detection means is selected to control the acquisition of the runout amount, and the drive frequency of the drive unit is determined. When the range and the range of the drive frequency of the second runout detection means overlap, the first runout detection means is selected to control the acquisition of the runout amount, and the range of the drive frequency of the drive unit and the range of the drive frequency of the drive unit are controlled. When the drive frequency ranges of the first and second runout detecting means do not overlap, control is performed to acquire the runout amount from at least one of the first and second runout detecting means.

According to the present invention, in an imaging device in which an external device having a drive unit can be attached to the main body, a runout detection unit is used by using a runout detection unit having a drive frequency different from the drive frequency of the drive unit. The control accuracy of the function can be improved.

It is a block diagram of the image pickup apparatus which concerns on embodiment of this invention. It is a flowchart about 1st Example of this invention. It is a flowchart about 2nd Embodiment of this invention. It is a flowchart explaining the process following FIG. It is a flowchart explaining the process following FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following examples, an example of a lens device will be described as an external device that can be attached to the main body of the image pickup device, but the present invention can be applied to an image pickup device that can be attached to various accessory devices.

[First Example]
FIG. 1 is a block diagram showing a configuration of an image pickup device with interchangeable lens units as an example of the image pickup device according to the present embodiment. The lens device 200 can be attached to the image pickup device main body 100. The configuration of the image pickup apparatus main body (hereinafter, simply referred to as the main body) 100 will be described.

The image sensor 121 receives light from the subject imaged through the image pickup optical system of the lens device 200 and the shutter 144, and photoelectrically converts the optical image of the subject into an electric signal. The A / D conversion unit 122 converts the analog signal output by the image sensor 121 into a digital signal. The A / D converted digital signal is controlled by the memory control unit 124 and the system control unit 120 and stored in the memory 127. The memory 127 stores data such as captured still images, moving images, and images for display for reproduction. The memory 127 has a storage capacity sufficient to store a predetermined number of still images and moving images.

The image processing unit 123 performs pixel interpolation processing, color conversion processing, and the like on the digital signal data that has been A / D converted by the A / D conversion unit 122. The image processing unit 123 includes a compression / decompression circuit that compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like. The image processing unit 123 can read the image data stored in the memory 127, perform compression processing or decompression processing, and write the processed data to the memory 127.

The image calculation unit 129 calculates the contrast value of the captured image, and measures the focusing state of the captured image from the contrast value. A process of calculating the correlation value between the image data stored in the memory 127 and the current captured image data and searching for the image area having the highest correlation is executed. The memory control unit 124 controls the transmission and reception of data between the A / D conversion unit 122, the image processing unit 123, the display unit 110, the external attachment / detachment memory unit 130, and the memory 127. The output data of the A / D conversion unit 122 is written to the memory 127 via the image processing unit 123 under the control of the memory control unit 124.

The display unit 110 includes, for example, a liquid crystal panel unit and a backlight illumination unit. The display unit 110 displays a through image in real time based on the captured image data acquired by the image sensor 121. As a result, so-called live view shooting can be performed. During the live view shooting, the display unit 110 superimposes the AF frame on the image and displays it so that the operator can recognize the position of the subject which is the AF (autofocus) target. The AF frame corresponds to a focus detection area for focusing on a desired subject. When the display unit 110 has a touch panel, the operator can perform an operation (touch AF) for designating a desired AF frame position on the display screen.

The system control unit 120 is a central unit that controls the entire imaging system, and can communicate with the lens control unit 203 in the lens device 200 via the connection terminal units 101 and 201. The connection terminal portion 101 is on the main body 100 side, and the connection terminal portion 201 is on the lens device 200 side. The system control unit 120 includes a CPU (Central Processing Unit) and controls each component of the imaging system by executing a control program. The system control unit 120 is connected to each component unit via a bus. A program stack area, a status storage area, a calculation area, a work area, and an image display data area of the system control unit 120 are secured in the memory 127. The CPU performs various calculations using the calculation area of the memory 127.

The non-volatile memory 128 is a storage device that can be electrically erased and recorded, and for example, a flash memory, an EEPROM (Electrically Erasable Programmable Read-Only Memory), or the like is used. The non-volatile memory 128 stores data at rest of the shooting state, a program for controlling the imaging device, and each drive frequency information of the shake detection unit 151 and the shake detection unit 152. In FIG. 1, the first runout detection unit 151 is referred to as a runout detection unit 1, and the second runout detection unit 152 is referred to as a runout detection unit 2. The system control unit 120 assigns an image blur correction function for camera shake, a panoramic shooting function, a panoramic shooting support function, an operation input function by motion sensing, and the like as functions using each shake detection unit to control each function. conduct.

The external detachable memory unit 130 is a memory unit that records image file data on a recording medium such as a compact flash (registered trademark) or an SD card and reads the data. The user can attach / detach the recording medium to / from the main body 100. The power supply unit 131 includes a battery, a battery detection circuit, a DC-DC converter, a switch circuit for switching an energization target, and the like, and detects whether or not a battery is installed, the type of battery, and the remaining battery level. The power supply unit 131 controls the DC-DC converter based on the detection result and the instruction of the system control unit 120 to supply power to each component unit.

The operation unit 132 includes an operation member for inputting various operation instructions to the system control unit 120. The operation unit 132 is composed of one or a plurality of combinations such as a switch, a dial, a pointing device based on line-of-sight detection, a voice recognition device, and the like.

The shutter control unit 141 controls the exposure time of the image sensor 121 by controlling the shutter 144 according to a control signal from the system control unit 120. The shutter 144 shields the image sensor 121 from light during non-shooting, and guides light rays to the image sensor 121 during shooting. The shutter control is performed in cooperation with the lens control unit 203 that controls the aperture 211 of the lens device 200 based on the photometric information from the photometric unit 142. When a light beam is incident through the imaging optical system, the photometric unit 142 for performing AE (automatic exposure) processing performs photometric processing with the light received through the photometric lens, and outputs the measurement result to the system control unit 120. The exposure state of the image formed as an optical image can be measured.

The ranging unit 143 performs AF processing and outputs the detection result of the focal state to the system control unit 120. When a light beam is incident through the imaging optical system, the distance measuring unit 143 receives light through the distance measuring mirror, and the focused state of the image formed as an optical image can be measured. During live view shooting, it is also possible to measure the in-focus state of the captured image according to the contrast value calculated from the image data output from the image calculation unit 129.

The runout detection units 151 and 152 have a runout detection sensor such as a gyro sensor, and detect the vibration amount of the main body 100. The system control unit 120 communicates with the lens control unit 203 via the connection terminal units 101 and 201, and controls the image blur correction based on the information of the vibration amount and the vibration direction in the pitch direction and the yaw direction detected by the vibration detection sensor. I do. Inside the lens device 200, a shift lens (image blur correction lens) that can move in a direction substantially orthogonal to the optical axis is arranged. By moving the shift lens in the direction in which the amount of runout is canceled, the optical image blur correction operation is performed. Alternatively, in the electronic image blur correction performed by the image processing unit 123, an image cropping process or the like is performed so as to cancel the vibration amount, and the image blur correction operation is realized. It is also possible to use both optical image blur correction and electronic image blur correction.

Here, the drive center frequency of the first runout detection unit 151 is referred to as "fg1", and the drive center frequency of the second runout detection unit 152 is referred to as "fg2". It is assumed that "fg1> fg2", that is, the runout detection unit 151 is driven at a higher frequency than the runout detection unit 152. Further, the drive frequency range of the runout detection unit 151 is set to "fg1 ± Δfg1". fg1 + Δfg1 is the maximum value in the drive frequency range, and fg1-Δfg1 is the minimum value in the drive frequency range. The drive frequency range of the runout detection unit 152 is set to "fg2 ± Δfg2". fg2 + Δfg2 is the maximum value of the drive frequency range, and fg2-Δfg2 is the minimum value of the drive frequency range. The frequency difference between fg1-Δfg1 and fg2 + Δfg2 is larger than the difference between fa + Δfa and fa−Δfa in the drive frequency range fa ± Δfa of the lens device described later.

The main body 100 includes a lens mount 102 which is a holding mechanism for connecting to the lens device 200. The lens device 200 can be attached to the main body 100 by coupling the lens mount 202 with the lens mount 102. Further, the main body 100 includes a connection terminal 101 for electrically connecting to the lens device 200, and is connected to the connection terminal 201 of the lens device 200. The system control unit 120 and the lens control unit 203 include a transmission unit and a reception unit, and can communicate with each other via the connection terminal units 101 and 201.

The lens device 200 is an interchangeable lens type lens unit, and includes a lens 210 and an aperture 211. The lens 210 is composed of a plurality of lens groups, and includes a zoom lens, a focus lens, an image blur correction lens that corrects image blur due to camera shake, and the like. Light from the subject passes through the lens 210, the aperture 211, the lens mounts 202 and 102, and the shutter 144, and forms an image on the image sensor 121. Further, the photometric unit 142 and the distance measuring unit 143 detect the subject light that has passed through the lens 210, the aperture 211, and the lens mounts 202 and 102.

The lens control unit 203 controls the entire lens device 200. The lens control unit 203 includes a memory for storing constants, variables, programs, and the like for operation. Further, the lens control unit 203 includes identification information such as a number unique to the lens device 200, management information, functional information such as an open aperture value and a minimum aperture value, and a focal length, current and past set values, and a lens driving unit 204. It is equipped with a non-volatile memory that holds drive frequency information and the like. The drive frequency information of the lens drive unit 204 is transmitted to the system control unit 120. The lens control unit 203 controls the focus adjustment of the lens 210 according to the information on the in-focus state of the image measured by the distance measuring unit 143 or the image calculation unit 129. The AF operation is performed by changing the imaging position of the subject light incident on the image sensor 121. Further, the lens control unit 203 controls the aperture 211 and the zooming of the lens 210.

The lens driving unit 204 drives the lens 210 and the aperture 211 according to the control signal of the lens control unit 203. The lens drive unit 204 includes a focus adjustment mechanism unit, a zooming mechanism unit, an image blur correction mechanism unit, and an aperture mechanism unit. The lens driving unit 204 drives the lens 210 and the aperture 211 by receiving a focus adjustment control signal of the lens 210, a zooming control signal, and a control signal of the aperture 211 from the lens control unit 203. The drive center frequency is referred to as "fa", and the drive frequency range is referred to as "fa ± Δfa". fa + Δfa is the maximum value of the drive frequency range, and fa−Δfa is the minimum value of the drive frequency range.

The lens driving unit 204 drives the focus lens by the focus adjustment control signal from the lens control unit 203, and drives the zoom lens by the zooming control signal. Further, the lens driving unit 204 drives the image blur correction lens according to a control signal for image blur correction from the lens control unit 203. Further, the lens driving unit 204 drives the aperture 211 according to the aperture control signal from the lens control unit 203.

Next, with reference to FIG. 2, the selection process of the runout detection unit according to this embodiment will be described. FIG. 2 is a flowchart illustrating a process of selecting a runout detection unit according to a drive frequency of an external device (accessory device) connected to the main body 100. Each process is realized by the CPU of the system control unit 120 expanding the program in the non-volatile memory 128 into the memory 127 and executing it.

In S101, the system control unit 120 communicates with the lens control unit 203 via the connection terminal units 101 and 201, and determines whether or not the lens device 200 is connected to the main body unit 100. If it is determined that the lens device 200 is connected to the main body 100, the process proceeds to S102, and if the lens device 200 is not connected to the main body 100, the determination process of S101 is repeated.

In S102, the system control unit 120 communicates with the lens control unit 203 and acquires data in the drive frequency range fa ± Δfa of the lens device 200. In S103, the system control unit 120 reads data in the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151 from the non-volatile memory 128 via the communication line. In S104, the system control unit 120 reads data in the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152 from the non-volatile memory 128 via the communication line.

In S105, the system control unit 120 compares the drive frequency range fa ± Δfa of the lens device 200 with the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151, and determines whether or not the drive frequency ranges overlap each other. .. Specifically, it is determined whether or not the first condition "fg1-Δfg1> fa + Δfa" or the second condition "fg1 + Δfg1 <fa-Δfa" is satisfied. When the first or second condition is satisfied, it means that the two drive frequency ranges do not overlap. If it is determined that the drive frequency range fa ± Δfa and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S106. On the other hand, when it is determined that the drive frequency range fa ± Δfa and fg1 ± fg1 overlap (No), the process proceeds to S108. In this case, the vibration generated by the lens device interferes with the sensor of the shake detection unit 151, and the output signal of the shake detection unit 151 becomes a signal on which a noise component is superimposed. Therefore, in order to obtain a correct runout detection signal, it is necessary to select a runout detection unit having a drive frequency that does not overlap with the drive frequency range fa ± Δfa of the lens device.

In S106, the system control unit 120 compares the drive frequency range fa ± Δfa of the lens device with the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152, and determines whether or not the drive frequency ranges overlap each other. Specifically, it is determined whether or not the third condition "fg2-Δfg2> fa + Δfa" or the fourth condition "fg2 + Δfg2 <fa-Δfa" is satisfied. When the third or fourth condition is satisfied, it means that the two drive frequency ranges do not overlap. If it is determined that the drive frequency range fa ± Δfa and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S107. If it is determined that the drive frequency range fa ± Δfa and fg2 ± Δfg2 overlap (No), the process proceeds to S109.

In S107, the system control unit 120 selects the runout detection units 151 and 152. In this case, the system control unit 120 can acquire the calculated runout amount from each output of the plurality of runout detection units. For example, the average value of the output values of the two sensors is calculated and used as the final output value. Alternatively, the output value of each sensor is multiplied by a weighting coefficient, and a weighted addition operation is performed to obtain the final output value. This makes it possible to improve the image blur correction accuracy. Further, since the detection angular velocity range characteristics and the sensitivity characteristics of the shake detection sensor required by the function of the image pickup apparatus are different, the system control unit 120 selects a shake detection unit suitable for a specific function. For example, a sensor with a narrow measurement range and high resolution is selected as the shake detection sensor used for camera shake correction of an imaging device, and the shake detection sensor used for the panoramic shooting function has a wide measurement range and low resolution. Sensor is selected. Further, the system control unit 120 can use the amount of runout according to the function by correcting the amount of runout obtained from the output of one runout detection unit with the output of the other runout detection unit. These are the same in the second embodiment described later.

In S108, the system control unit 120 selects the runout detection unit 152. In this case, the function of the imaging device assigned to the shake detection unit 151 is realized by using the output signal of the shake detection unit 152. In S109, the system control unit 120 selects the runout detection unit 151. In this case, the function of the imaging device assigned to the shake detection unit 152 is realized by using the output signal of the shake detection unit 151.

In this embodiment, in an imaging device in which an external device having a drive unit can be attached to the main body, the drive frequencies of a plurality of runout detection units and the drive frequencies of the drive units in the lens device are compared. It is determined whether the drive frequency of each runout detection unit is within or outside the range of the drive frequency of the drive unit in the lens device. As a result of the determination, the amount of runout is acquired by the runout detection unit having a drive frequency that does not interfere with the drive frequency of the drive unit in the lens device. According to this embodiment, the control accuracy can be improved by selecting the runout detection unit according to the drive frequency of the drive unit in the lens device and using the output signal in which the noise component is not superimposed.

[Second Example]
A second embodiment of the present invention will be described with reference to the flowcharts of FIGS. 3 to 5. In this embodiment, selection of a runout detection unit according to the drive frequencies of a plurality of actuators included in the accessory device connected to the main body 100 will be described. For example, the accessory device shall include first and second actuators. In this embodiment, the same components as those in the first embodiment will be described in detail by using the reference numerals already used. The following processing is realized by expanding the program read from the non-volatile memory 128 by the system control unit 120 into the memory 127 and executing the program.

In S201 of FIG. 3, the value of the count variable (denoted as A) is set to zero. The count variable A is a variable used to determine whether or not the first and second actuators included in the lens device 200 are being driven, respectively. The value of the count variable A takes one of the following values.
A = 0: Indicates that both the first and second actuators are not driven.
A = 1: Indicates that the first actuator is being driven and the second actuator is not being driven.
A = 2: Indicates that the first actuator is not driven and the second actuator is driven.
A = 3: Indicates that the first and second actuators are being driven.

In S202, the system control unit 120 determines whether or not the lens device 200 is connected to the main body 100 based on the response during communication. If it is determined that the lens device 200 is connected to the main body 100, the process proceeds to S203. When the lens device 200 is not connected to the main body 100, the determination process of S202 is repeated.

In S203, the system control unit 120 communicates with the lens control unit 203 and reads out data on the drive frequency of the first actuator of the lens device 200. The drive center frequency of the first actuator is described as "fa1", and the drive frequency range is defined as "fa1 ± Δfa1". fa1 + Δfa1 is the maximum value of the drive frequency range, and fa1-Δfa1 is the minimum value of the drive frequency range.

In S204, the system control unit 120 communicates with the lens control unit 203 and reads out data on the drive frequency of the second actuator of the lens device 200. The drive center frequency of the second actuator is described as "fa2", and the drive frequency range is defined as "fa2 ± Δfa2". fa2 + Δfa2 is the maximum value of the drive frequency range, and fa2-Δfa2 is the minimum value of the drive frequency range.

In S205, the system control unit 120 reads data in the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151 from the non-volatile memory 128 via the communication line. In S206, the system control unit 120 reads data in the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152 from the non-volatile memory 128 via the communication line.

In S207, the system control unit 120 communicates with the lens control unit 203 to determine whether or not the first actuator is driven. If it is determined that the first actuator is driven, the process proceeds to S208, and if it is determined that the first actuator is not driven, the process proceeds to S209. In S208, 1 is added to the value of the count variable A, and the process proceeds to S209.

In S209, the system control unit 120 communicates with the lens control unit 203 to determine whether or not the second actuator is driven. If it is determined that the second actuator is being driven, the process proceeds to S210, and if it is determined that the second actuator is not being driven, the process proceeds to S211. In S210, 2 is added to the value of the count variable A, and the process proceeds to S211.

In S211 the system control unit 120 determines whether or not the value of the count variable A is 3. When the A value is 3, it indicates that the first and second actuators are being driven. Therefore, when the drive frequency range of either of the first and second actuators and the drive frequency range of the runout detection sensor overlap, the output signal of the runout detection sensor is the output signal on which the noise component is superimposed. turn into. If it is determined that the A value is 3, the process proceeds to S212, and if it is determined that the A value is not 3, the process proceeds to the sequence “X” described with reference to FIG.

In S212, the system control unit 120 determines whether or not the drive frequency range fa1 ± Δfa1 of the first actuator overlaps with the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151. Specifically, it is determined whether or not the first condition "fg1-Δfg1> fa1 + Δfa1" or the second condition "fg1 + Δfg1 <fa1-Δfa1" is satisfied. When the first or second condition is satisfied, it means that the two drive frequency ranges do not overlap. When it is determined that the drive frequency range fa1 ± Δfa1 and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S213. If it is determined that the drive frequency range fa1 ± Δfa1 and fg1 ± Δfg1 overlap (No), the process proceeds to S217.

In S213, the system control unit 120 determines whether or not the drive frequency range fa2 ± Δfa2 of the second actuator overlaps with the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151. Specifically, it is determined whether or not the third condition "fg1-Δfg1> fa2 + Δfa2" or the fourth condition "fg1 + Δfg1 <fa2-Δfa2" is satisfied. When the third or fourth condition is satisfied, it means that the two drive frequency ranges do not overlap. If it is determined that the drive frequency range fa2 ± Δfa2 and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S214. If it is determined that the drive frequency range fa2 ± Δfa2 and fg1 ± Δfg1 overlap (No), the process proceeds to S217.

In S214, the system control unit 120 determines whether or not the drive frequency range fa1 ± Δfa1 of the first actuator overlaps with the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152. Specifically, it is determined whether or not the fifth condition "fg2-Δfg2> fa1 + Δfa1" or the sixth condition "fg2 + Δfg2 <fa1-Δfa1" is satisfied. When the fifth or sixth condition is satisfied, it means that the two drive frequency ranges do not overlap. If it is determined that the drive frequency ranges fa1 ± Δfa1 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S215. If it is determined that the drive frequency range fa1 ± Δfa1 and fg2 ± Δfg2 overlap (No), the process proceeds to S218.

In S215, the system control unit 120 determines whether or not the drive frequency range fa2 ± Δfa2 of the second actuator overlaps with the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152. Specifically, it is determined whether or not the seventh condition "fg2-Δfg2> fa2 + Δfa2" or the eighth condition "fg2 + Δfg2 <fa2-Δfa2" is satisfied. When the seventh or eighth condition is satisfied, it means that the two drive frequency ranges do not overlap. If it is determined that the drive frequency range fa2 ± Δfa2 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S216. If it is determined that the drive frequency range fa2 ± Δfa2 and fg2 ± Δfg2 overlap (No), the process proceeds to S218.

In S216, the system control unit 120 selects the runout detection units 151 and 152. Further, in S217, the system control unit 120 selects the runout detection unit 152. In this case, functions such as camera shake correction of the imaging device assigned to the shake detection unit 151 are realized by using the output signal of the shake detection unit 152. In S218, the system control unit 120 selects the runout detection unit 151. In this case, the panoramic shooting function and the like realized by the image pickup apparatus using the output signal of the shake detection unit 152 are realized by using the output signal of the shake detection unit 151.
After the processing of S216, S217, and S218, a series of processing is completed.

Subsequently, the sequence “X” shown in FIG. 4 will be described.
In S219, the system control unit 120 determines whether or not the value of the count variable A is 2. When the A value is 2, it means that the first actuator is not driven and the second actuator is driven. If it is determined that the A value is 2, the process proceeds to S220, and if it is determined that the A value is not 2, the process proceeds to the sequence “Y” shown in FIG.

In S220, the system control unit 120 determines whether or not the drive frequency range fa2 ± Δfa2 of the second actuator overlaps with the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151. When the third or fourth condition is satisfied and it is determined that the drive frequency ranges fa2 ± Δfa2 and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S221. If it is determined that the drive frequency range fa2 ± Δfa2 and fg1 ± Δfg1 overlap (No), the process proceeds to S223.

In S221, the system control unit 120 determines whether or not the drive frequency range fa2 ± Δfa2 of the second actuator overlaps with the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152. When the seventh or eighth condition is satisfied and it is determined that the drive frequency ranges fa2 ± Δfa2 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S222. If it is determined that the drive frequency range fa2 ± Δfa2 and fg2 ± Δfg2 overlap (No), the process proceeds to S224.

In S222, the system control unit 120 selects the runout detection units 151 and 152. In S223, the system control unit 120 selects the runout detection unit 152. In this case, functions such as camera shake correction of the imaging device assigned to the shake detection unit 151 are realized by using the output signal of the shake detection unit 152. In S224, the system control unit 120 selects the runout detection unit 151. In this case, the panoramic shooting function or the like realized by using the output signal of the shake detection unit 152 is realized by using the output signal of the shake detection unit 151. After the processing of S222, S223, and S224, a series of processing is completed.

Subsequently, the sequence “Y” shown in FIG. 5 will be described.
In S225, the system control unit 120 determines whether or not the value of the count variable A is 1. When the A value is 1, it means that the first actuator is driven and the second actuator is not driven. If it is determined that the A value is 1, the process proceeds to S226, and if it is determined that the A value is not 1, the process proceeds to S228. The fact that the A value is not 1 means that A = 0, which means that the first and second actuators are not driven.

In S226, the system control unit 120 determines whether or not the drive frequency range fa1 ± Δfa1 of the first actuator overlaps with the drive frequency range fg1 ± Δfg1 of the sensor of the runout detection unit 151. When the first or second condition is satisfied and it is determined that the drive frequency ranges fa1 ± Δfa1 and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S227. If it is determined that the drive frequency range fa1 ± Δfa1 and fg1 ± Δfg1 overlap (No), the process proceeds to S229.

In S227, the system control unit 120 determines whether or not the drive frequency range fa1 ± Δfa1 of the first actuator overlaps with the drive frequency range fg2 ± Δfg2 of the sensor of the runout detection unit 152. When the fifth or sixth condition is satisfied and it is determined that the drive frequency ranges fa1 ± Δfa1 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S228. If it is determined that the drive frequency range fa1 ± Δfa1 and fg2 ± Δfg2 overlap (No), the process proceeds to S230.

In S228, the system control unit 120 selects the runout detection units 151 and 152. In S229, the system control unit 120 selects the runout detection unit 152. In this case, functions such as camera shake correction of the imaging device assigned to the shake detection unit 151 are realized by using the output signal of the shake detection unit 152. In S230, the system control unit 120 selects the runout detection unit 151. In this case, the panoramic shooting function or the like realized by using the output signal of the shake detection unit 152 is realized by using the output signal of the shake detection unit 151. After the processing of S228, S229, and S230, a series of processing is completed.

According to this embodiment, when an accessory device including a plurality of actuators is connected to the main body of the imaging device, it is possible to select the optimum runout detection unit in the main body and perform highly accurate control.

In the above embodiment, even when the drive unit operates while the external device having the drive unit is attached to the image pickup device main body unit, it is not affected by the interference of the drive frequency of the drive unit or is less affected. The output signal of the runout detection unit can be acquired.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the gist thereof. For example, in the above embodiment, the configuration in which the image pickup apparatus main body 100 includes a plurality of shake detection units has been described, but the present invention can also be applied when the lens device 200 includes a third shake detection unit. In this case, the system control unit 120 can acquire data on the drive frequency and the amount of runout of the third runout detection unit by communication and assign a specific function.

100 Imaging device main unit 151,152 Shake detection unit 120 System control unit 200 Lens device 203 Lens control unit 204 Lens drive unit

Claims (10)

An imaging device in which an external device having a drive unit can be attached to the main body.
A communication means for communicating with the external device and
Based on the range of the drive frequency of the drive unit acquired via the communication means, the control means for controlling the function using the first and second runout detection means having different drive frequencies is provided.
The control means compares the range of the drive frequency of the drive unit with the range of the drive frequency of the first runout detection means and the range of the drive frequency of the second runout detection means.
When the range of the drive frequency of the drive unit and the range of the drive frequency of the first runout detection means overlap, the second runout detection means is selected to control the acquisition of the runout amount.
When the range of the drive frequency of the drive unit and the range of the drive frequency of the second runout detection means overlap, the first runout detection means is selected to control the acquisition of the runout amount.
When the drive frequency range of the drive unit and the drive frequency range of the first and second runout detection means do not overlap, the runout amount is acquired from at least one of the first and second runout detection means. An imaging device characterized by performing control. The imaging device according to claim 1, wherein the control means controls to acquire a runout amount for each function by assigning different functions to the first and second runout detection means. Has a first shake detecting means for the first function is allocated, and the second function is allocated a second shake detecting means, and
In the control means, the drive frequency of the first runout detection means is within the drive frequency range of the drive unit , and the drive frequency of the second runout detection means is not within the drive frequency range of the drive unit. case, the imaging apparatus according to claim 2, which comprises carrying out the process of assigning the first function to the second shake detecting means. A storage means for storing information in the drive frequency range of the first runout detection means and the drive frequency range of the second runout detection means is provided.
The control means compares the acquired drive frequency range of the drive unit with the drive frequency range of the first runout detection means and the drive frequency range of the second runout detection means, and determines the drive frequency. the imaging apparatus according to claim 3, characterized in that the interference non shake detection control to obtain the selected and shake amount means. When the drive frequency range of the first and second runout detection means is outside the drive frequency range of the drive unit , the control means outputs the first runout detection means and the second runout detection means. The imaging device according to claim 4, wherein the amount of runout is acquired by calculation from the output of the runout detecting means. When the drive frequency range of the first and second runout detection means is outside the drive frequency range of the drive unit , the control means outputs the output of the first runout detection means to the second. The imaging apparatus according to claim 4, wherein the image is corrected by the output of the runout detecting means. The difference between the maximum value of the drive frequency of the first vibration detection means of the minimum value and the second shake detecting means driving frequency, claim, wherein greater than the range of the drive frequency of the drive unit The imaging apparatus according to any one of 1 to 6. The imaging device according to any one of claims 2 to 6 , wherein the function assigned to the first or second shake detecting means by the control means includes an image blur correction function or a panoramic shooting function. The external device includes a plurality of drive units and has a plurality of drive units.
The control means that performs control to acquire the amount of deflection by selecting shake detection means different driving frequencies and the driving frequency of the driving unit operating in one of a plurality of driving portions of the external device The imaging device according to any one of claims 1 to 8, wherein the imaging device is characterized. It is a control method executed by an imaging device in which an external device having a drive unit can be attached to the main body.
The process of communicating with the external device and
It has a control step in which the drive frequency of the drive unit is acquired by communication with the external device and the control means controls the functions using the first and second runout detection means having different drive frequencies.
In the control step, the control means compares the range of the drive frequency of the drive unit with the range of the drive frequency of the first runout detection means and the range of the drive frequency of the second runout detection means.
When the range of the drive frequency of the drive unit and the range of the drive frequency of the first runout detection means overlap, the second runout detection means is selected to control the acquisition of the runout amount.
When the range of the drive frequency of the drive unit and the range of the drive frequency of the second runout detection means overlap, the first runout detection means is selected to control the acquisition of the runout amount.
When the drive frequency range of the drive unit and the drive frequency range of the first and second runout detection means do not overlap, the runout amount is acquired from at least one of the first and second runout detection means. control method of an imaging device and performs control.

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