Photographing device

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to an improvement of a photographing device capable of photographing a still image and a moving image having a blur correction function.

【0002】

[Conventional technology]

In recent years, there is a camera shake correction function as a general function of a camera. As the correction means for correcting this camera shake, there are an electronic type that controls the image output and an optical type that uses a variable apex angle prism. In each method, camera shake correction works effectively by controlling according to each shooting state such as panning, tilting, and a stationary state such as wearing a tripod.

【0003】

[Problems to be Solved by the Invention]

In recent years, many cameras, such as a video camera capable of shooting still images and a digital still camera capable of shooting moving images, are capable of shooting both still images and moving images, and it is clear that they will become more and more common in the future. However, it cannot be said that the characteristics required for camera shake correction are the same in still image shooting and moving image shooting, and despite the fact that contradictory characteristics are required, the control characteristics are the main still image or moving image. It has become one that matches the shooting. Since the image stabilization function in moving images is required to have high followability to camera work such as intentional panning and tilting of the photographer as well as image stabilization, it is necessary to change the characteristics to the high frequency side. On the other hand, in still image shooting, the correction range of the correction means is used as effectively as possible so that not only fine camera shake but also low-frequency camera shake with relatively large amplitude can be corrected, and the blur of the subject image is minimized. It is desirable to make it easy for the characteristics on the low frequency side to be suppressed.

【0004】

However, conventionally, the camera shake correction function in a camera capable of shooting still images and moving images has only the camera shake correction characteristics suitable for shooting the main still image or moving image of the camera. Therefore, for example, the main function is moving image shooting. In the still image shooting of the video camera, the low frequency is not completely removed, so the shot image has no resolution and blurring remains. On the other hand, the video shooting of the digital still camera whose main function is still image shooting. In the case of the above, there are problems that it is difficult to adjust the image angle because the characteristics of high frequency are hard to be obtained, and phenomena such as ship sickness and return to the image appear, and the intended shooting cannot be performed.

【0005】

(Purpose of the Invention) An object of the present invention is to make it possible to change the characteristics of blur correction when shooting a still image and when shooting a moving image, so that the blur correction functions effectively in each shooting. It is intended to provide a capable imaging device.

【0006】

[Means for solving problems]

In order to achieve the above object, the invention according to claim 1 has a still image and a moving image having a blur correction means and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. It is a photographing device capable of photographing, and the control means is a photographing device that uses a control characteristic on the lower frequency side than when photographing a moving image at the time of still image photographing.

【0007】

Similarly, in order to achieve the above object, the invention according to claim 2 is a still image having a blur correction means and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. The control means is a photographing device capable of photographing a moving image, and the control means is a photographing device using a control characteristic that makes it difficult to detect panning and tilting at the time of shooting a still image as compared with the case of photographing a moving image.

【0008】

Similarly, in order to achieve the above object, the invention according to claim 3 controls the blur correction means by using a switch means for photographing, a blur correction means, and any one of a plurality of control characteristics. A photographing device capable of shooting still images and moving images having a control means, wherein the control means changes the control characteristics according to an operating state of the switch means and a shooting state of still image shooting and moving image shooting. It is to be.

【0009】

Similarly, in order to achieve the above object, the invention according to claim 4 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. The control means is a photographing device capable of shooting still images and moving images, and the control means changes the control characteristics according to the switch operation up to the first stage of the release means and the shooting conditions of still image shooting and moving image shooting. It is used as a photographing device.

【0010】

Similarly, in order to achieve the above object, the invention according to claim 5 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. A shooting device capable of shooting still images and moving images, wherein the control means changes control characteristics according to the switch operation up to the second stage of the release means and the shooting conditions of still image shooting and movie shooting. It is a device.

【0011】

Similarly, in order to achieve the above object, the invention according to claim 6 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. The control means is a shooting device capable of shooting still images and moving images, and the control means depends on the switch operation up to the first stage or the second stage of the release means and the shooting conditions of still image shooting and movie shooting. It is an imaging device that changes the control characteristics.

【0012】

Similarly, in order to achieve the above object, the invention according to claim 7 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. A shooting device capable of shooting still images and moving images, wherein the control means uses the same control characteristics in both still image shooting and moving image shooting when the switch operation of the release means is not performed. It is a device.

【0013】

Similarly, in order to achieve the above object, the invention according to claim 8 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. The control means is a photographing device capable of shooting still images and moving images, and when the switch operation up to the first stage of the release means is performed in the still image shooting, the switch operation of the release means is performed. It is an imaging device that uses the control characteristics on the lower frequency side than when it is not performed.

【0014】

Similarly, in order to achieve the above object, the invention according to claim 9 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. The control means is a photographing device capable of shooting still images and moving images, and when the switch operation up to the second stage of the release means is performed in the still image shooting, the switch operation of the release means is performed. It is an imaging device that uses the control characteristics on the lower frequency side than when it is not performed.

【0015】

Similarly, in order to achieve the above object, the invention according to claim 10 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. A shooting device capable of shooting still images and moving images, wherein the control means obtains control characteristics at the time of shooting still images when the switch operation up to the first stage of the release means is performed. It is an imaging device that changes the control characteristics to a lower frequency side than the time.

【0016】

Similarly, in order to achieve the above object, the invention according to claim 11 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. A shooting device capable of shooting still images and moving images, wherein the control means obtains control characteristics at the time of shooting still images when the switch operation up to the second stage of the release means is performed. It is an imaging device that changes the control characteristics to a lower frequency side than the time.

【0017】

Similarly, in order to achieve the above object, the invention according to claim 12 comprises a release means, a blur correction means, and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. A photographing device capable of photographing a still image and a moving image, and the control means is at the time of still image photographing when the switch operation up to the first stage or the second stage of the release means is performed. It is an imaging device that changes the control characteristics to the control characteristics on the lower frequency side than when photographing a moving image.

【0018】

Similarly, in order to achieve the above object, the invention according to claim 13 controls the blur correction means by using the blur correction means and any one of a plurality of control characteristics, and depending on the control characteristics used. It is a shooting device capable of shooting still images and moving images having a control means for setting characteristics for detecting a still state, and the control means sets the characteristics for detecting the still state in still image shooting and moving image shooting. It is a shooting device that can be changed with and.

【0019】

Similarly, in order to achieve the above object, the invention according to claim 14 controls the blur correction means by using a switch means for photographing, a blur correction means, and any one of a plurality of control characteristics. A still image and moving image capturing apparatus having a control means for setting a characteristic for detecting a stationary state according to the control characteristic used, wherein the control means has a characteristic for detecting the stationary state. Is a shooting device that changes according to the operating state of the switch means and the shooting conditions of still image shooting and moving image shooting.

【0020】

Similarly, in order to achieve the above object, the invention according to claim 15 controls the blur correction means by using the blur correction means and any one of a plurality of control characteristics, and depending on the control characteristics used. It is a shooting device capable of shooting still images and moving images having a control means for setting a characteristic for detecting the frequency of the blur, and the control means measures the characteristics for detecting the frequency in still image shooting and moving image shooting. It is a shooting device that can be changed with and.

【0021】

Similarly, in order to achieve the above object, the invention according to claim 16 controls the blur correction means by using a switch means for photographing, a blur correction means, and any one of a plurality of control characteristics. A still image and moving image shooting device having a control means for setting a characteristic for detecting a blur frequency according to the control characteristic used, wherein the control means has a characteristic for detecting the frequency. Is a shooting device that changes according to the operating state of the switch means and the shooting conditions of still image shooting and moving image shooting.

【0022】

Similarly, in order to achieve the above object, the invention according to claim 17 controls the blur correction means by using the blur correction means and any one of a plurality of control characteristics, and depending on the control characteristics used. An imaging device capable of capturing still images and moving images having a control means for setting characteristics for detecting panning and tilting, wherein the control means sets the characteristics for detecting panning and tilting as described in the stationary state. It is a shooting device that changes according to the shooting conditions of image shooting and movie shooting.

【0023】

Similarly, in order to achieve the above object, the invention according to claim 18 controls the blur correction means by using a switch means for photographing, a blur correction means, and any one of a plurality of control characteristics. A still image and moving image capturing apparatus having a control means for setting characteristics for detecting panning and tilting according to the control characteristics used, wherein the control means detects the panning and tilting. The characteristics for this are changed according to the operating state of the switch means and the shooting conditions of still image shooting and moving image shooting.

【0024】

Similarly, in order to achieve the above object, the invention according to claim 19 includes a still image having a blur correction means and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. It is a photographing device capable of photographing a moving image, and the control means is a photographing device that changes the control characteristics depending on whether or not the moving image is recorded.

【0025】

Similarly, in order to achieve the above object, the invention according to claim 20 is a still image having a blur correction means and a control means for controlling the blur correction means by using any one of a plurality of control characteristics. It is a photographing device capable of photographing a moving image, and the control means is a photographing device having the same control characteristics when the still image and the moving image are not recorded.

【0026】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.

【0027】

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a main part of a camera according to the first embodiment of the present invention.

【0028】

In the figure, reference numeral 1 denotes, for example, a rear focus type shooting lens, which has a front lens 1a, a variable magnification lens 1b, a fixed lens 1c, a focus adjustment lens 1d, an aperture 1e, and a blur correction lens 1f composed of a variable apex angle prism. ing. 2 is an image sensor such as CCD, 3 is a signal processing circuit, 4 is a recording circuit that records still images and moving images, 5 is a control circuit such as a microcomputer, and 6 and 7 are actuators and drive circuits that drive the image stabilization lens 1f. , 8 is a camera shake correction ON / OFF detection circuit that detects whether the camera shake correction function is ON or OFF, and 9 and 10 are a sensor and a detection circuit that detect the position of the camera shake correction lens 1f.

【0029】

11 and 12 are switches SW1 and SW2 that constitute a two-stage operation button that is a release means. The operation button (not shown) is in an open state unless it is pushed by a spring or the like, and in this state, the switch is in the open state. SW1 and SW2 are OFF. Further, when the operation button is pressed to the first stage, the switch SW1 is turned ON, and when the operation button is pressed to the second stage, the switch SW2 is turned ON. Hereinafter, the state in which the switch SW1 is ON will be described as generation of signal S1, and the state in which the switch SW2 is ON will be described as generation of signal S2. 13 is a still image shooting / moving image shooting detection circuit that detects whether shooting is performed with a still image or a moving image, 14 is a blur sensor that detects blurring such as a vibration gyro, and 15 is for capturing the sensor output as a control signal. It is a detection circuit having a filter and an amplifier of.

【0030】

For example, when the output of the still image shooting / moving image shooting detection circuit 13 is a still image, the focus position is detected and fixed when the signal S1 is generated, and the exposure condition is detected and fixed, and the still image is generated when the signal S2 is generated. Recorded. Further, when the output of the still image shooting / moving image shooting detection circuit 13 is a moving image, the moving image is recorded by the generation of the signal S2. However, the recording of the moving image may be configured to trigger the output of another switch or the like, and is not limited to this.

【0031】

FIG. 2 is a block diagram showing an internal configuration of the control circuit 5 shown in FIG.

【0032】

The blur sensor 14 is an angular velocity sensor such as a gyro, detects blur in the horizontal direction and the vertical direction, and the blur signal (angular velocity signal) is input to the control circuit 5 via the detection circuit 15. Then, in the control circuit 5, the blur signal is digitized by the A / D converter 16, converted into the angular displacement signal by the integrator 18 via the HPF (high-pass filter) 17, and the phase is converted by the phase and gain correction unit 19. And gain correction is performed and output to the drive circuit 7 via the D / A converter 20. As a result, the blur correction lens 1f is driven and blur correction is performed.

【0033】

Further, the imaging state determination unit 21 provided in the control circuit 50 includes an angular velocity signal from the blur sensor 14, an angular displacement signal from the integrator 18, signals S1 and S2 in which the switches SW1 and SW2 are ON, and camera shake. The characteristics of the HPF17, phase and gain correction unit 19 by obtaining the ON / OFF of the camera shake correction function from the correction ON / OFF detection circuit 8 and the signal of still image shooting or movie shooting from the still image shooting / moving image shooting detection circuit 13. Is controlled to high frequency characteristics and low frequency characteristics by varying the output in consideration of each output.

【0034】

Further, the photographing state determination unit 21 may have a function of detecting a frequency and setting the optimum filter characteristics for that frequency. At that time, by setting the frequency detection level so that it can detect high frequencies, for example, when shooting still images and movies, or by making it difficult to pick up frequencies, it is possible to detect low frequencies. When shooting movies, not only correction of camera shake, but also the characteristics on the high frequency side can be easily adjusted so that the photographer can follow the camera work such as intentional panning and tilting, and when shooting still images. Uses the correction range of the correction lens 1f as effectively as possible so that not only fine camera shake but also low frequency camera shake with relatively large amplitude can be corrected, and the characteristics on the low frequency side can suppress the blur of the subject image as much as possible. It is possible to make it easy to become.

【0035】

Further, the photographing state determination unit 21 may have a function of determining the detection of panning or tilting from the output of the blur sensor 14 or the output of the integrator 18 and enhancing the followability thereof. Specifically, when an angular velocity signal or an angular displacement of a certain level or higher is detected, the characteristic is set to a high frequency so as to follow the panning or tilting operation. If the width of the judgment level is narrow, panning and tilting are detected sensitively, and high frequency characteristics are likely to occur. On the other hand, if the width of the judgment level is wide, it is difficult to detect panning and tilting, and the characteristics become high frequency. It goes without saying that it will be difficult.

【0036】

At that time, the judgment level at the time of shooting still images and moving images is set narrow so that panning or tilting can be easily detected, or the judgment level is set so that panning or tilting is difficult to detect. By making the setting wide variable, when shooting movies, the high frequency side can not only correct camera shake but also follow the camera work such as intentional panning and tilting of the photographer. Use the correction range of the image stabilization lens 1f as effectively as possible to make it easier to characterize, and to correct not only fine camera shake but also low-frequency camera shake with relatively large amplitude when shooting still images. It is possible to make it easy for the characteristics on the low frequency side to suppress blurring as much as possible.

【0037】

According to the present invention, in a camera capable of still image shooting and moving image shooting, the camera shake correction characteristic can be changed between the case of still image shooting and the case of moving image shooting, so that the camera shake correction is effective in each shooting. To function.

【0038】

Next, the operation of the main part of the camera in the above configuration will be described with reference to the flowchart of FIG.

【0039】

First, in step # 101, it is determined from the output of the camera shake correction function ON / OFF detection circuit 8 whether the camera shake correction function is ON or OFF, and if it is OFF, the process proceeds to step # 102 to bring the control characteristic to the state of 1. The control characteristic 1 has a characteristic that the image stabilization lens 1f is fixed so as not to operate and the image stabilization function is turned off.

【0040】

Further, if it is determined in step # 101 that the image stabilization function is ON, the process proceeds to step # 103, where the two-stage operation button (not shown) is released (state in which signals S1 and S2 are not generated). Whether or not it is determined, and if it is in the open state, the process proceeds to step # 104, and the state of control characteristic 2 is set. By setting this control characteristic 2 as a control characteristic that tends to be a relatively high-frequency characteristic, it becomes a characteristic that easily follows changes in the angle of view and intentional panning and tilting operations of the camera while correcting camera shake. , It is possible to perform control suitable for selecting a subject and adjusting the angle of view when shooting a still image or a moving image. In this case, since the still image and the moving image are not recorded, it is not necessary to distinguish them in each shooting state. Therefore, the same control may be performed for each. Further, in some cases, it may be the same as the above-mentioned control characteristic 1 or a characteristic in which the effect of image stabilization is small, disappears, or is turned off.

【0041】

If the two-stage operation button (not shown) is not open, proceed from step # 103 to step # 105, where the output of the still image shooting / moving image shooting detection circuit 13 determines whether to shoot a still image or a moving image. judge. As a result, in the case of moving image shooting, the process proceeds to step # 106 to bring the control characteristic to the state of 3. The control characteristic 3 has a control characteristic that tends to be a relatively high frequency characteristic so as to be a characteristic that easily follows a change in the angle of view and an intentional panning or tilting operation of the camera while performing image stabilization. This may be exactly the same as the control characteristic 2 in step # 104. The fact that the characteristics are the same both when shooting a movie and when the operation button is open makes it easy to follow changes in the angle of view and the intentional panning and tilting movements of the camera while correcting camera shake. To make it. In this case, by setting the frequency characteristics to be higher than when the operation button is open when shooting a movie, the followability can be further improved when shooting a movie, or when shooting a movie, the frequency is lower than when the operation button is open. By making it a characteristic, it is possible to correct low-frequency blurring that is relatively large when the operation button is open when shooting a movie, so it is possible to easily set the characteristic according to these purposes. it can.

【0042】

Next, the process proceeds to step # 107, where it is determined whether or not the signal S2 is generated, and if so, the process proceeds to step # 108, the moving image is recorded in the recording circuit 4, and the process returns to step # 101. If signal S2 has not been generated, the process immediately returns to step # 101.

【0043】

If still image shooting was performed in step # 105 above, the process proceeds to step # 109 to determine whether or not only signal S1 is generated, and if only signal S1 is not generated, step # 111 is immediately performed. Proceed to. If only the signal S1 is generated, the process proceeds to step # 110 to bring the control characteristic to the state of 4. Control characteristic 4 is a characteristic when still image shooting is performed. By having a control characteristic that tends to be a relatively low frequency characteristic, not only fine camera shake but also low frequency camera shake with a relatively large amplitude can be corrected. It is a characteristic that the correction range of the image stabilization lens 1f can be used effectively. The purpose is to make it possible to correct low-frequency camera shake with a relatively large amplitude by having at least control characteristics that are more likely to have lower frequency characteristics than control characteristics 2 and 3. In the first embodiment of the present embodiment, the flow chart will be described assuming that the control characteristic has a control characteristic that tends to be a lower frequency characteristic than the control characteristic 2, but when the signal S1 is generated, it is still actually a still image. Since the image is not taken, the camera shake correction is performed in the same way as the control characteristic 2 where the operation button is open, and the characteristic is such that it can easily follow the change in the angle of view and the intentional panning and tilting movements of the camera. It is also possible to make the control characteristic 2 and the control characteristic 4 the same characteristic. In this case, since the control characteristics are the same when the signal S1 is generated and when the operation button is open, no discomfort occurs when the operation button is open and when the signal S1 is generated, in which the photographer determines the angle of view during shooting. In addition, the correction angle is often smaller than when low frequencies are emphasized, and the effect of power saving can be obtained by narrowing the drive range.

【0044】

Further, when the signal S1 is generated, it is possible to set the high frequency characteristic in order to further improve the followability as compared with the case where the operation button is open. In this case, it is possible to exert an effect on the angle of view adjustment when shooting is often performed while moving the camera such as panning.

【0045】

In this way, the characteristics of control characteristic 2 can be set according to each purpose.

【0046】

Returning to the explanation of the flowchart of FIG. 3, the process returns from step # 110 to step # 101. On the other hand, when the process proceeds from step # 109 to step # 111, it is determined whether or not the signal S2 is also generated, and if not, the process returns to step # 101. If signal S2 is also generated, the process proceeds to step # 112 to bring the control characteristic to the state of 5. The control characteristic 5 may be the same as the control characteristic 4. Depending on the configuration and specifications of the camera, this characteristic may be limited to high frequencies in order to solve each problem, and it is not necessary to particularly limit the characteristics. By making the control of each control characteristic variable, it is possible to respond to each product's application, features, specifications, structure, and the like. Further, by storing the data of each control characteristic in a rewritable storage circuit, it is possible to easily change the performance of each product, and it can be used for various purposes. The types of control characteristics are not limited to the above, and may be the same depending on the shooting and conditions. Therefore, if the characteristics are the same in advance, the types of control characteristics do not have to be the above.

【0047】

(Second Embodiment) The second embodiment of the present invention is a case where the camera is fixed and shooting is performed in a stationary state without blurring, such as when a camera is placed or a tripod is attached to shoot. In addition, in order to prevent the blur correction lens 1f from moving with the change in the low-frequency DC-like signal output of the blur sensor 14 as a blur signal and the image being distorted, a stationary state is detected by performing a stationary judgment. When this is done, the blur correction lens 1f is controlled to have high-frequency characteristics so that the above-mentioned image is not disturbed, and the control characteristics are set when shooting still images and moving images as in the first embodiment described above. When changing, the conditions for the stationary determination also change, so that the characteristics of the stationary determination are made variable according to the control characteristics.

【0048】

The circuit configuration of the camera according to the second embodiment of the present embodiment is the same as that in FIGS. 1 and 2.

【0049】

The shooting state determination unit 21 in the control circuit 5 has a function of determining the stationary state of the camera from the output of the blur sensor 14. For example, when a frequency with a certain predetermined time deviation cannot be detected, it is determined to be in a stationary state.

【0050】

In the case of still image shooting, since the camera is often taken in a fixed state even if it is handheld, it may be difficult to detect the still state as compared with moving image shooting in which panning and tilting are frequently performed. This is because there is a higher possibility that the patient will make an erroneous rest judgment by hand compared to movie shooting. For example, the time during which the frequency cannot be detected for a predetermined time is made longer in the case of still image shooting than in the case of moving image shooting.

【0051】

Here, the determination of the stationary state by detecting the frequency will be described. The frequency can be detected by counting the number of times that the output of the angular velocity signal of the blur sensor 14 and the output of the angular displacement signal of the integrator 18 are obtained within a predetermined time. For example, when camera shake occurs such as in handheld shooting, the frequency of camera shake can be read from the above-mentioned angular velocity and angular displacement signals. At that time, since the shooting state determination unit 21 can change the control characteristics according to the detected frequency, the frequency detection level is set to be higher than that of the moving image shooting so that the high frequency characteristics are less likely to be obtained in the still image shooting than in the moving image shooting. It is set so that the frequency is not detected unless the signal output is accompanied by a certain amplitude by increasing the frequency. Therefore, when the frequency is used for determining whether or not it is in a stationary state, the level is different from the stationary state determination at the time of moving image shooting. In some cases, the state of rest may be determined immediately and the control may be adversely affected. When the frequency output is used for this rest state determination, it is possible to detect the frequency without detecting the frequency for a certain predetermined time. Therefore, the detection level of the frequency is set for the still image and the moving image, respectively. This not only prevents erroneous rest state judgment, but also makes it possible to change the control characteristics according to still image and movie shooting by enabling settings according to each shooting, so that appropriate rest state judgment can be performed. It will be possible to do.

【0052】

The detection of the stationary state can be realized by changing the judgment level of various signals. In addition to the above frequencies, there are various other signals for determination such as an angular velocity signal, an angular displacement signal, panning, tilting, time, a predetermined counter, and the like, and the determination may be performed by combining them. ..

【0053】

For example, the determination of the stationary state by the angular velocity signal and the angular displacement signal will be described. If the angular velocity signal and the angular displacement signal do not reach a certain predetermined level, it can be determined that the stationary state is present. In this case, the level of each signal and a predetermined time for determination may be provided for each of the still image and the moving image.

【0054】

To explain the stationary state by detecting panning and tilting, whether the camera is currently panning or tilting is continuously output in a certain direction for a certain period of time with the angular velocity signal and the angular displacement signal. Can be done by detecting. When the shooting state determination unit 21 detects panning or tilting, the control characteristics are set to high frequency characteristics in order to improve the followability. However, when the control characteristics are different between still image shooting and moving image shooting, for example, in still image shooting. In this case, by making it difficult to detect panning and tilting, it is possible to set it so that high frequency characteristics are less likely to occur. Therefore, if panning or tilting detection is used to determine the stationary state, in some cases, the stationary state may be determined immediately and the control may be adversely affected. When using the detection result of panning or tilting for this still state judgment, in the case of still image shooting, the still image shooting, such as making the still image judgment more sensitive to the detection of panning than the moving image shooting, By making it possible to make settings according to each shooting of moving images, even if the control characteristics can be changed according to shooting of still images and moving images, it is possible to appropriately determine the still state.

【0055】

As described above, when the control characteristics are variable depending on the state of the switch for still image and moving image shooting and shooting as in the first embodiment of the above-described embodiment, the frequency determination level and the panning and tilting are determined respectively. Since the determination level and the like are different, the static determination level can be changed accordingly. Of course, the level of determination for detecting the stationary state may be fixed while the control characteristics remain variable.

【0056】

The feature of the second embodiment of this implementation is to make the characteristics of the detection of the stationary state variable according to the shooting conditions such as the output of the switch means (switches SW1 and SW2) for shooting and shooting still images and moving images. This is to provide static control suitable for any shooting situation. Depending on the product specifications and shooting conditions, the still image detection characteristics may be the same for both still image shooting and movie shooting, but still image shooting may be easier to detect the still state, and it is particularly limited. It's not something to do.

【0057】

FIG. 4 is a flowchart showing an outline of detection of a stationary state in still image and moving image shooting of the camera according to the second embodiment of the present invention.

【0058】

In step # 201, it is determined whether to shoot a still image or a moving image, if it is still image shooting, the process proceeds to step # 202, if it is a still image shooting, the still state is detected, and if it is a moving image, the process proceeds to step # 203. , Detects a stationary state for movie shooting.

【0059】

FIG. 5 is a flowchart showing that each of the control characteristics 1 to 5 of the first embodiment is detected in a stationary state.

【0060】

First, in step # 301, it is determined whether or not the control characteristic is control characteristic 1, and if so, the process proceeds to step # 302 to detect a stationary state suitable for control characteristic 1 (resting state detection 1). If the control characteristic is not control characteristic 1, the process proceeds from step # 302 to step # 303, and if the control characteristic is control characteristic 2, it is determined whether or not the control characteristic is control characteristic 2, and if the control characteristic is control characteristic 2, the process proceeds to step # 304. Detects a stationary state suitable for control characteristic 2 (stationary state detection 2). If the control characteristic is not the control characteristic 2, the process proceeds from step # 303 to step # 304 to determine whether the control characteristic is the control characteristic 3, and if the control characteristic is the control characteristic 3, the process proceeds to step # 306. Detects a stationary state suitable for control characteristic 3 (stationary state detection 3).

【0061】

If the control characteristic is not control characteristic 3, the process proceeds from step # 305 to step # 307, and if the control characteristic is control characteristic 4, it is determined whether or not the control characteristic is control characteristic 4, and if the control characteristic is control characteristic 4, the process proceeds to step # 308. Detects a stationary state suitable for control characteristic 4 (stationary state detection 4). If the control characteristic is not control characteristic 4, the process proceeds from step # 307 to step # 309, and if the control characteristic is control characteristic 5, it is determined whether or not the control characteristic is control characteristic 5, and if the control characteristic is control characteristic 5, the process proceeds to step # 310. The stationary state detection suitable for the control characteristic 5 (stationary state detection 5) is performed, and this operation is terminated. If the control characteristic is not the control characteristic 5, this operation is immediately terminated.

【0062】

(Third Embodiment) FIG. 6 is a block diagram showing a configuration of a main part of a camera according to a third embodiment of the present invention, the same parts as those in FIG. 1 have the same reference numerals, and the description thereof will be omitted. ..

【0063】

23 is a photo switch that collectively refers to two-stage operation buttons (switches SW1 (11), SW2 (12)), and 24 is a video recording switch for recording video recording, and repeats recording and stopping by toggle operation. It is a thing. Reference numeral 25 denotes a moving image recording detection circuit, and when the moving image recording switch 24 starts and stops moving image recording, the moving image recording detection circuit 24 outputs a signal indicating whether or not moving image recording is in progress.

【0064】

In the third embodiment of this embodiment, an example is shown in which the photo switch 23 is used when shooting a still image, and the moving image recording switch 24 is used when recording a moving image.

【0065】

During shooting, it is often the case that the subject is searched for or the angle of view is adjusted while looking at the image shot with a finder (not shown) without recording. In that case, the movement of the camera may be larger or rougher than when recording a moving image as well as when shooting a still image. In addition, it may be difficult to see some blurring on the finder of the camera, and the control characteristics may be changed so that the characteristics of high frequencies are more likely to be obtained than when recording a moving image and the tracking performance is improved.

【0066】

FIG. 7 is a flowchart showing the operation of the main part of the camera in the above configuration.

【0067】

First, in step # 401, it is determined from the output of the camera shake correction function ON / OFF detection circuit 8 whether the camera shake correction function is ON or OFF, and if it is OFF, the process proceeds to step # 402 to bring the control characteristic to the state of 1. The control characteristic 1 is a characteristic in which the image stabilization lens 1f is fixed so as not to operate and the image stabilization function is turned off.

【0068】

If the image stabilization function is ON, the process proceeds from step # 401 to step # 403 to determine whether or not the photo switch 23 is open, and if it is open, the process proceeds to step # 404, where video recording is performed. Whether it is medium or not is determined from the output from the moving image recording detection circuit 25. As a result, if the moving image is not being recorded, the process proceeds to step # 405 to bring the control characteristic to the state of 2. By making this control characteristic 2 have a control characteristic that tends to be a relatively high-frequency characteristic, it is easy to follow changes in the angle of view and intentional panning and tilting operations of the camera while correcting camera shake. Therefore, it is possible to perform control suitable for selecting a subject and adjusting the angle of view when shooting a still image or a moving image. In this case, since the still image and the moving image are not recorded, it is not necessary to distinguish them in each shooting state. Therefore, the same control may be performed for each. Further, depending on the case, the characteristics may be the same as the above-mentioned control characteristic 1 such as a state in which the effect of image stabilization is small, a state in which the image stabilization is eliminated, or a state in which the image stabilization is OFF.

【0069】

If it is determined in step # 404 that the moving image is being recorded, the process proceeds to step # 406 to bring the control characteristic to the state of 3. The control characteristic 3 has a control characteristic that tends to be a relatively high frequency characteristic so as to be a characteristic that easily follows a change in the angle of view and an intentional panning or tilting operation of the camera while performing image stabilization. This may be exactly the same as the control characteristic 2 in step # 405, or may be a control characteristic that is not as likely to be a high frequency characteristic as the control characteristic 2. In the next step # 407, the moving image is recorded and the process returns to step # 401.

【0070】

If it is determined in step # 403 that the photo switch 23 is pressed, the process proceeds to step # 408, and it is determined whether or not only the signal S1 is generated. At this time, even during moving image recording, if the photo switch 23 is operated, a still image may be taken. If only signal S1 is generated, the process proceeds to step # 409, and the state of control characteristic 4 is set. The control characteristic 4 is a characteristic when a still image is taken by generating the signal S1. By having a control characteristic that tends to be a relatively low frequency characteristic, not only a small camera shake but also a low amplitude with a relatively large amplitude is obtained. It has the characteristic that the correction range of the image stabilization lens 1f can be effectively used so that the camera shake of the frequency can also be corrected. It may have at least a control characteristic that tends to be a lower frequency characteristic than the control characteristic 2 and the control characteristic 3. Further, although not shown, when the signal S1 is generated during moving image recording, the control characteristic is not limited to this and may be used for moving image recording.

【0071】

After changing to the state of control characteristic 4 in step # 409 above, the process returns to step # 401. On the other hand, if only the signal S1 is not generated in the above step # 408, the process proceeds to step # 410, and here it is determined whether the signal S2 is also generated. As a result, if the signal S2 is not generated, the process returns to step # 401, but if the signal S2 is also generated, the process proceeds to step # 111 to bring the control characteristic to the state of 5. The control characteristic 5 may be the same as the control characteristic 4 described above. Alternatively, by making the control characteristic more likely to have a lower frequency characteristic than the control characteristic 4, the correction range of the blur correction lens 1f may be effectively used to further correct the low frequency blur with a relatively large amplitude. Absent. In addition, if some vibration is generated by the pressing operation to generate the signal S2 depending on the configuration and specifications of the camera, or if there is an capture error due to the shutter time lag, in order to solve each problem. This characteristic is not limited to a low frequency, and may be one that tends to have a high frequency, and is not particularly limited. By making the control variable for any of the control characteristics, it is possible to respond to the application, features, specifications, structure, etc. of each product. Further, by storing the data of each control characteristic in a rewritable storage circuit, it is possible to easily change the performance of each product, and it can be used for various purposes. The types of control characteristics are not limited to the above, and may be the same depending on the shooting and conditions. Therefore, if the characteristics are the same in advance, the types of control characteristics do not have to be the above.

【0072】

According to each of the above embodiments, when shooting a moving image, the control characteristics are changed so that the characteristics on the high frequency side have good followability to the camera work such as intentional panning and tilting of the photographer. Also, when shooting still images, use the correction range of the image stabilization lens 1f as effectively as possible so that not only fine camera shake but also low-frequency camera shake with a relatively large amplitude can be corrected, and the subject. Since the control characteristics can be changed so that the characteristics on the low frequency side can easily suppress image blur, both still images and videos such as video cameras that can shoot still images and digital still cameras that can shoot movies can be shot. Even if it is possible to take a picture, it is possible to effectively perform the image stabilization at each time of taking a picture, and it is possible to take a good picture.

【0073】

[Effect of the invention]

As described above, according to the present invention, by making it possible to change the characteristics of image stabilization when shooting a still image and when shooting a moving image, it is possible to effectively function the image stabilization in each shooting. It is possible to provide a photographing device capable of performing.

[Simple explanation of drawings]

[Figure 1]

It is a block diagram which shows the circuit structure of the main part of the camera which concerns on 1st Embodiment of this invention.

[Figure 2]

It is a block diagram which shows the detail in the control circuit of FIG.

[Fig. 3]

It is a flowchart which shows the operation of the main part of the camera which concerns on 1st Embodiment of this invention.

[Fig. 4]

It is a flowchart which shows the operation of the main part of the camera which concerns on 2nd Embodiment of this invention.

[Fig. 5]

It is also the flowchart which shows the operation of the main part of the camera which concerns on the 2nd Embodiment of this invention.

[Fig. 6]

It is a block diagram which shows the circuit structure of the main part of the camera which concerns on 3rd Embodiment of this invention.

[Fig. 7]

It is a flowchart which shows the operation of the main part of the camera which concerns on 3rd Embodiment of this invention.

[Explanation of symbols]

1 Shooting lens 1f blur correction lens 2 Image sensor 5 Control circuit 8 Image stabilization ON / OFF detection circuit 13 Still image shooting / video shooting detection circuit 21 Shooting state judgment circuit 23 Photo switch 24 Operation record switch 25 Video recording detection circuit