JP2019008174A - Imaging device and control method of the same - Google Patents

Abstract

To improve control accuracy of a function using a tremor detection unit by using the tremor detection unit serving as a driving frequency different from that of a driving unit in an imaging device capable of mounting an external device with the driving unit to a main body part.SOLUTION: A main body part 100 of an imaging device is capable of mounting a lens device 200. The main body part 100 comprises tremor detection units 151 and 152 that are different in a driving frequency. A system control unit 120 is configured to communicate with a lens control unit 203 of the lens device 200; and acquire a driving frequency of a driving unit of the lens device 200. The system control unit 120 is configured to conduct control of selecting the tremor detection unit in which the driving frequency of the driving unit of the lens device 200 and a driving frequency of the tremor detection units 151 and 152 stored in a memory 128 do not interfere, and acquiring an amount of tremor.SELECTED DRAWING: Figure 1

Description

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

  In a typical imaging apparatus 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 a camera shake. Based on the shake information of the image pickup apparatus by the shake detection sensor, part or all of the image pickup optical system is driven to perform image blur correction on the image plane.

  By the way, the image pickup apparatus includes various vibration sources such as a mirror and a shutter drive unit, an ultrasonic motor that controls focus adjustment, and a stepping motor. Since the angular velocity sensor is very sensitive, when vibration occurs at a period close to the driving frequency of the angular velocity sensor, the angular velocity sensor may receive vibration interference. 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 for storing a frequency to be avoided in advance and controlling the rotational speed so that the apparatus does not resonate with the rotational speed of the disk.

JP 2010-152961 A

However, although the prior art disclosed in Patent Document 1 is effective in a system with a variable driving frequency, it cannot cope with a system with a fixed driving frequency.
An object of the present invention is to use a shake detection unit by using a shake detection unit having a drive frequency different from the drive frequency of the drive unit in an imaging device capable of mounting an external device having a drive unit on the main body. It is to increase the control accuracy of the function.

  An apparatus according to an embodiment of the present invention is an imaging device capable of mounting an external device having a drive unit on a main body, the communication unit communicating with the external device, and the external unit via the communication unit Control means for controlling communication with the apparatus and controlling functions using a plurality of shake detection means having different drive frequencies. The control means compares the drive frequency of the external device acquired from the external device by the communication means and the drive frequency of the plurality of shake detection means, and out of the plurality of shake detection means, Control is performed to select a shake detection means having a drive frequency different from the drive frequency of the attaching device and acquire the shake amount.

  According to the present invention, in an imaging device capable of mounting an external device having a drive unit on a main body unit, the shake detection unit is used by using a shake detection unit having a drive frequency different from the drive frequency of the drive unit. Function control accuracy can be increased.

1 is a block diagram of an imaging apparatus according to an embodiment of the present invention. It is a flowchart regarding 1st Example of this invention. It is a flowchart regarding 2nd Example 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 embodiments, an example of a lens device will be described as an external device that can be attached to the main body of the imaging device, but the present invention can be applied to an imaging device in which various accessory devices can be attached.

[First embodiment]
FIG. 1 is a block diagram illustrating a configuration of a lens unit exchangeable imaging apparatus as an example of an imaging apparatus according to the present embodiment. The lens device 200 can be attached to the imaging device main body 100. The configuration of the imaging apparatus main body (hereinafter simply referred to as the main body) 100 will be described.

  The imaging element 121 receives light from a subject formed through the imaging optical system of the lens device 200 and the shutter 144, and photoelectrically converts the optical image of the subject into an electrical signal. The A / D converter 122 converts an analog signal output from 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 and moving images, images for playback display, and the like. 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 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 image data stored in the memory 127, perform compression processing or decompression processing, and write the processed data into the memory 127.

  The image calculation unit 129 calculates the contrast value of the captured image, and performs measurement related to the in-focus state of the captured image from the contrast value. A process of calculating a correlation value between the image data stored in the memory 127 and the current captured image data and searching for an image area having the highest correlation is executed. The memory control unit 124 controls data transmission / reception among the A / D conversion unit 122, the image processing unit 123, the display unit 110, the external detachable memory unit 130, and the memory 127. The output data of the A / D conversion unit 122 is written into 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. Thus, so-called live view shooting can be performed. During live view shooting, the display unit 110 displays the AF frame superimposed on the image so that the operator can recognize the position of the subject that is the target of AF (autofocus). 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 portion 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 via a bus. In the memory 127, 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. The CPU performs various calculations using the calculation area of the memory 127.

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

  The external detachable memory unit 130 is a memory unit that records data of an image file 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 unit 100. The power supply unit 131 includes a battery, a battery detection circuit, a DC-DC converter, a switch circuit for switching energization targets, and the like, and detects whether or not a battery is attached, 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 from the system control unit 120 to supply power to each component.

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

  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 when not photographing, and guides light to the image sensor 121 when photographing. The shutter control is performed in cooperation with the lens control unit 203 that controls the diaphragm 211 of the lens device 200 based on the photometry information from the photometry unit 142. When a light beam is incident through the imaging optical system, the photometry unit 142 for performing AE (automatic exposure) processing performs photometry processing using light received through the photometry lens, and outputs a measurement result to the system control unit 120. The exposure state of the image formed as an optical image can be measured.

  The distance measuring unit 143 performs AF processing, and outputs the focus state detection result to the system control unit 120. When a light beam enters through the imaging optical system, the distance measuring unit 143 receives light through the distance measuring mirror, and the in-focus 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 shake detection units 151 and 152 include a shake detection sensor such as a gyro sensor, for example, and detects 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 image blur correction based on the information on the pitch direction, the yaw direction vibration amount, and the vibration direction detected by the shake detection sensor. I do. A shift lens (image blur correction lens) that can move in a direction substantially orthogonal to the optical axis is disposed inside the lens device 200. An optical image blur correction operation is performed by moving the shift lens in a direction in which the shake amount is canceled. Alternatively, in the electronic image blur correction performed by the image processing unit 123, an image clipping process or the like is performed so as to cancel the vibration amount, and an image blur correction operation is realized. Optical image blur correction and electronic image blur correction can be used in combination.

  Here, the drive center frequency of the first shake detection unit 151 is expressed as “fg1”, and the drive center frequency of the second shake detection unit 152 is expressed as “fg2”. “Fg1> fg2”, that is, the shake detection unit 151 is driven at a higher frequency than the shake detection unit 152. In addition, the drive frequency range of the shake detection unit 151 is “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 shake detection unit 152 is “fg2 ± Δfg2”. fg2 + Δfg2 is the maximum value in the drive frequency range, and fg2−Δfg2 is the minimum value in the drive frequency range. The difference in frequency between fg1−Δfg1 and fg2 + Δfg2 is larger than the difference between fa + Δfa and fa−Δfa in the driving frequency range fa ± Δfa of the lens device described later.

  The main body 100 includes a lens mount 102 that 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. The main body unit 100 includes a connection terminal unit 101 for electrical connection with the lens device 200, and is connected to the connection terminal unit 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 a diaphragm 211. The lens 210 includes 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 diaphragm 211, the lens mounts 202 and 102, and the shutter 144 and forms an image on the image sensor 121. Further, the photometry unit 142 and the distance measurement unit 143 detect 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 operation constants, variables, programs, and the like. The lens control unit 203 also includes identification information such as a number unique to the lens device 200, management information, function information such as an open aperture value, a minimum aperture value, and a focal length, current and past set values, and a lens drive unit 204. A non-volatile memory that holds drive frequency information and the like is provided. The driving frequency information of the lens driving unit 204 is transmitted to the system control unit 120. The lens control unit 203 controls the focus adjustment of the lens 210 in accordance with information on the 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. The lens control unit 203 controls the diaphragm 211 and zooming of the lens 210.

  The lens driving unit 204 drives the lens 210 and the aperture 211 in accordance with the control signal from the lens control unit 203. The lens driving unit 204 includes a focus adjustment mechanism, a zooming mechanism, an image blur correction mechanism, and a diaphragm mechanism. The lens driving unit 204 receives the focus adjustment control signal and zooming control signal of the lens 210 and the control signal of the diaphragm 211 from the lens control unit 203 and drives the lens 210 and the diaphragm 211. The drive center frequency is expressed as “fa”, and the drive frequency range is set to “fa ± Δfa”. fa + Δfa is the maximum value in the drive frequency range, and fa−Δfa is the minimum value in 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. The lens driving unit 204 drives the image blur correction lens in accordance with an image blur correction control signal from the lens control unit 203. Further, the lens driving unit 204 drives the diaphragm 211 in accordance with the diaphragm control signal from the lens control unit 203.

  Next, with reference to FIG. 2, the selection process of the shake detection unit according to the present embodiment will be described. FIG. 2 is a flowchart for describing processing for selecting a shake detection unit in accordance with the drive frequency of an external device (accessory device) connected to the main body unit 100. Each process is realized by the CPU of the system control unit 120 developing the program in the nonvolatile memory 128 in the memory 127 and executing it.

  In step S <b> 101, the system control unit 120 communicates with the lens control unit 203 via the connection terminal units 101 and 201 to determine whether the lens device 200 is connected to the main body unit 100. When it is determined that the lens device 200 is connected to the main body 100, the process proceeds to S102, and when the lens device 200 is not connected to the main body 100, the determination processing of S101 is repeated.

  In step S <b> 102, the system control unit 120 communicates with the lens control unit 203 to acquire data of the driving frequency range fa ± Δfa of the lens device 200. In step S103, the system control unit 120 reads data in the driving frequency range fg1 ± Δfg1 of the sensor of the shake detection unit 151 from the nonvolatile memory 128 via the communication line. In step S104, the system control unit 120 reads data in the drive frequency range fg2 ± Δfg2 of the sensor of the shake detection unit 152 from the nonvolatile memory 128 via the communication line.

  In S105, the system control unit 120 compares the driving frequency range fa ± Δfa of the lens device 200 with the driving frequency range fg1 ± Δfg1 of the sensor of the shake detection unit 151, and determines whether the driving 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 there is no overlap between the two drive frequency ranges. When 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 of the lens device interferes with the sensor of the shake detection unit 151, and the output signal of the shake detection unit 151 is a signal on which a noise component is superimposed. Therefore, in order to obtain a correct shake detection signal, it is necessary to select a shake 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 driving frequency range fa ± Δfa of the lens device with the driving frequency range fg2 ± Δfg2 of the sensor of the shake detection unit 152, and determines whether or not the driving frequency ranges overlap. 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 there is no overlap between the two drive frequency ranges. When it is determined that the drive frequency ranges fa ± Δfa and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S107. If it is determined that the drive frequency ranges fa ± Δfa and fg2 ± Δfg2 overlap (No), the process proceeds to S109.

  In step S107, the system control unit 120 selects the shake detection units 151 and 152. In this case, the system control unit 120 can acquire the shake amount calculated from the outputs of the plurality of shake detection units. For example, the average value of the output values of 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 a final output value. Thereby, it is possible to improve the image blur correction accuracy. In addition, since the detection angular velocity range characteristic and sensitivity characteristic of the shake detection sensor required by the function of the imaging 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 a shake detection sensor used for camera shake correction of an imaging apparatus, and a characteristic with a wide measurement range and low resolution is used as a shake detection sensor used for a panoramic shooting function. Sensors are selected. Further, the system control unit 120 can use the shake amount according to the function by correcting the shake amount obtained from the output of one shake detection unit with the output of the other shake detection unit. These are the same in the second embodiment described later.

  In step S108, the system control unit 120 selects the shake 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 shake 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 the present embodiment, in an imaging device in which an external device having a drive unit can be mounted on the main body, the drive frequencies of a plurality of shake detection units are compared with the drive frequencies of the drive units in the lens device. It is determined whether the drive frequency of each shake detection unit is within or outside the range of the drive frequency of the drive unit in the lens apparatus. As a result of the determination, a shake amount is acquired by a shake detection unit having a drive frequency that does not interfere with the drive frequency of the drive unit in the lens apparatus. According to the present embodiment, the control accuracy can be increased by selecting the shake detection unit according to the drive frequency of the drive unit in the lens apparatus and using the output signal on which no noise component is superimposed.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to the flowcharts of FIGS. In the present embodiment, selection of the shake detection unit according to the drive frequencies of a plurality of actuators included in the accessory device connected to the main body unit 100 will be described. For example, it is assumed that the accessory device includes first and second actuators. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The following processing is realized by the system control unit 120 developing the program read from the nonvolatile memory 128 in the memory 127 and executing it.

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 driven. 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 driven and the second actuator is not 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 step S202, the system control unit 120 determines whether the lens apparatus 200 is connected to the main body unit 100 based on a response during communication. When it is determined that the lens apparatus 200 is connected to the main body 100, the process proceeds to S203. If the lens apparatus 200 is not connected to the main body 100, the determination process in S202 is repeated.

  In step S <b> 203, the system control unit 120 communicates with the lens control unit 203 to read data on the driving frequency of the first actuator of the lens device 200. The drive center frequency of the first actuator is expressed as “fa1”, and the drive frequency range is “fa1 ± Δfa1”. fa1 + Δfa1 is the maximum value in the drive frequency range, and fa1−Δfa1 is the minimum value in the drive frequency range.

  In step S <b> 204, the system control unit 120 communicates with the lens control unit 203 to read data on the driving frequency of the second actuator of the lens device 200. The driving center frequency of the second actuator is expressed as “fa2”, and the driving frequency range is “fa2 ± Δfa2”. fa2 + Δfa2 is the maximum value in the drive frequency range, and fa2-Δfa2 is the minimum value in the drive frequency range.

  In step S <b> 205, the system control unit 120 reads data in the sensor drive frequency range fg <b> 1 ± Δfg <b> 1 from the non-volatile memory 128 via the communication line. In S <b> 206, the system control unit 120 reads data in the sensor driving frequency range fg <b> 2 ± Δfg <b> 2 of the shake detection unit 152 from the nonvolatile memory 128 via the communication line.

  In step S207, the system control unit 120 communicates with the lens control unit 203 to determine whether or not the first actuator is driven. When it is determined that the first actuator is driven, the process proceeds to S208, and when 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 step S209, the system control unit 120 communicates with the lens control unit 203 to determine whether the second actuator is being driven. When it is determined that the second actuator is driven, the process proceeds to S210, and when it is determined that the second actuator is not 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 the value of the count variable A is 3. A value of 3 indicates that the first and second actuators are being driven. Therefore, when the drive frequency range of one of the first and second actuators overlaps with the drive frequency range of the shake detection sensor, the output signal of the shake detection sensor is an output signal in which a noise component is superimposed. turn into. If it is determined that the A value is 3, the process proceeds to S212. If it is determined that the A value is not 3, the process proceeds to the sequence “X” described in FIG.

  In S212, the system control unit 120 determines whether or not the drive frequency range fa1 ± Δfa1 of the first actuator overlaps the drive frequency range fg1 ± Δfg1 of the sensor of the shake 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 there is no overlap between the two drive frequency ranges. 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 shake detection unit 151. Specifically, it is determined whether or not a third condition “fg1−Δfg1> fa2 + Δfa2” or a fourth condition “fg1 + Δfg1 <fa2−Δfa2” is satisfied. When the third or fourth condition is satisfied, it means that there is no overlap between the two drive frequency ranges. When 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 shake detection unit 152. Specifically, it is determined whether or not a fifth condition “fg2−Δfg2> fa1 + Δfa1” or a sixth condition “fg2 + Δfg2 <fa1−Δfa1” is satisfied. When the fifth or sixth condition is satisfied, it means that there is no overlap between the two drive frequency ranges. When 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 ranges fa1 ± Δfa1 and fg2 ± Δfg2 overlap (No), the process proceeds to S218.

  In S215, the system control unit 120 determines whether or not the driving frequency range fa2 ± Δfa2 of the second actuator overlaps the driving frequency range fg2 ± Δfg2 of the sensor of the shake detection unit 152. Specifically, it is determined whether 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 there is no overlap between the two drive frequency ranges. When 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 shake detection units 151 and 152. In S217, the system control unit 120 selects the shake detection unit 152. In this case, functions such as camera shake correction of the imaging apparatus assigned to the shake detection unit 151 are realized using the output signal of the shake detection unit 152. In step S218, the system control unit 120 selects the shake detection unit 151. In this case, the panorama shooting function and the like realized by the imaging 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 processes of S216, S217, and S218, the series of processes is terminated.

Next, the sequence “X” shown in FIG. 4 will be described.
In S219, the system control unit 120 determines whether the value of the count variable A is 2. When the A value is 2, this indicates 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. 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 driving frequency range fa2 ± Δfa2 of the second actuator overlaps the driving frequency range fg1 ± Δfg1 of the sensor of the shake detection unit 151. When it is determined that the third or fourth condition is satisfied and the drive frequency range 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 the drive frequency range fg2 ± Δfg2 of the sensor of the shake detection unit 152. When it is determined that the seventh or eighth condition is satisfied and the drive frequency ranges fa2 ± Δfa2 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S222. When 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 shake detection units 151 and 152. In step S223, the system control unit 120 selects the shake detection unit 152. In this case, functions such as camera shake correction of the imaging apparatus assigned to the shake detection unit 151 are realized using the output signal of the shake detection unit 152. In S224, the system control unit 120 selects the shake detection unit 151. In this case, the panorama shooting function and the like realized 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 processes of S222, S223, and S224, the series of processes is terminated.

Next, the sequence “Y” shown in FIG. 5 will be described.
In S225, the system control unit 120 determines whether the value of the count variable A is 1. A value of 1 indicates that the first actuator is driven and the second actuator is not driven. When it is determined that the A value is 1, the process proceeds to S226, and when it is determined that the A value is not 1, the process proceeds to S228. The fact that the A value is not 1 indicates that A = 0 and 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 the drive frequency range fg1 ± Δfg1 of the sensor of the shake detection unit 151. When it is determined that the first or second condition is satisfied and the drive frequency ranges fa1 ± Δfa1 and fg1 ± Δfg1 do not overlap (Yes), the process proceeds to S227. When 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 shake detection unit 152. When it is determined that the fifth or sixth condition is satisfied and the drive frequency ranges fa1 ± Δfa1 and fg2 ± Δfg2 do not overlap (Yes), the process proceeds to S228. If it is determined that the driving frequency ranges fa1 ± Δfa1 and fg2 ± Δfg2 overlap (No), the process proceeds to S230.

  In S228, the system control unit 120 selects the shake detection units 151 and 152. In step S229, the system control unit 120 selects the shake detection unit 152. In this case, functions such as camera shake correction of the imaging apparatus assigned to the shake detection unit 151 are realized using an output signal of the shake detection unit 152. In S230, the system control unit 120 selects the shake detection unit 151. In this case, the panorama shooting function and the like realized 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 processes of S228, S229, and S230, the series of processes is terminated.

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

  In the above-described embodiment, even when the drive unit is operated in a state where the external device having the drive unit is mounted on the imaging apparatus main body, the drive unit is not affected by the drive frequency interference or has little effect. The output signal of the shake detection unit can be acquired.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the said Example, A various deformation | transformation and change are possible within the range of the summary. For example, in the above-described embodiment, the configuration in which the imaging apparatus main body 100 includes a plurality of shake detection units has been described. However, the present invention can also be applied to a case where the lens device 200 includes a third shake detection unit. In this case, the system control unit 120 can acquire data on the driving frequency and the shake amount of the third shake detection unit by communication and assign a specific function.

DESCRIPTION OF SYMBOLS 100 Image pick-up device main body 151,152 Shake detection part 120 System control part 200 Lens apparatus 203 Lens control part 204 Lens drive part

Claims (10)

An imaging device capable of mounting an external device having a drive unit on a main body,
Communication means for communicating with the external device;
Control means for controlling communication with the external device via the communication means, and for controlling functions using a plurality of shake detection means having different drive frequencies,
The control means compares the drive frequency of the external device acquired from the external device by the communication means and the drive frequency of the plurality of shake detection means, and out of the plurality of shake detection means, An imaging apparatus comprising: a control unit that selects a shake detection unit having a drive frequency different from the drive frequency of the attaching device and acquires a shake amount. The imaging apparatus according to claim 1, wherein the control unit performs control to acquire a shake amount for each function by assigning different functions to the plurality of shake detection units. As the plurality of shake detection means, a first shake detection means assigned with a first function, and a second shake detection means assigned with a second function,
In the control means, the drive frequency of the first shake detection means is within a drive frequency range of the external device, and the drive frequency of the second shake detection means is a range of the drive frequency of the external device. The imaging apparatus according to claim 2, wherein if it is not within, the process of assigning the first function to the second shake detection unit is performed. Storage means for storing information on the drive frequency range of the first shake detection means and the drive frequency range of the second shake detection means;
The control means compares the acquired drive frequency range of the external device with the drive frequency range of the first shake detection means and the drive frequency range of the second shake detection means. The image pickup apparatus according to claim 3, wherein control for acquiring a shake amount by selecting a shake detection unit that does not interfere with the image pickup apparatus is performed. When the drive frequency ranges of the first and second shake detection means are both outside the drive frequency range of the external device, the control means and the output of the first shake detection means and the second The imaging apparatus according to claim 4, wherein a shake amount calculated from an output of the shake detection unit is acquired. The control means outputs the output of the first shake detection means to the second when the drive frequency ranges of the first and second shake detection means are both outside the drive frequency range of the external device. The imaging apparatus according to claim 4, wherein correction is performed based on an output of the shake detection unit. The difference between the minimum value of the drive frequency of the first shake detection unit and the maximum value of the drive frequency of the second shake detection unit is larger than the range of the drive frequency of the external device. The imaging device according to any one of 4 to 6. 5. The imaging apparatus according to claim 2, wherein the function that the control unit assigns to the plurality of shake detection units includes an image blur correction function or a panorama shooting function. The external device includes a plurality of driving units,
The control means performs control for obtaining a shake amount by selecting a shake detection means having a drive frequency different from the drive frequency of the drive section operating among the plurality of drive sections of the external device. The imaging apparatus according to any one of claims 1 to 8. A control method executed by an imaging device capable of mounting an external device having a drive unit on a main body unit,
Communicating with the external device;
A control step of obtaining a drive frequency of the external device by communication with the external device and performing control of a function using a plurality of shake detection units having different drive frequencies,
In the control step, the control means compares the acquired drive frequency of the external device with the drive frequencies of the plurality of shake detection means, and drives the external device among the plurality of shake detection means. A control method for an imaging apparatus, wherein control is performed to acquire a shake amount by selecting a shake detection means having a drive frequency different from the frequency.

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