JP2003130647A - Electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment surely preventing any detection error in vibration of a detecting object generated by the out-of-range vibration consistent with a sensitive band of a vibration gyro, while reducing design load. SOLUTION: The equipment contains the vibration gyro, a vibration detecting means and a driving means drive-controlled during vibration measurement of the detecting object. The vibration detecting means is provided with a filtering means which can switch a frequency pass band, defines the frequency pass band as the second frequency band (#125) at the timing of the out-of-range vibration measurement, as well as activates the driving means while changing the control conditions during the activation, to find the driving requirements for the driving means when the vibration of the detecting object driven by the driving means in vibration measurement lightly affects detection of the vibration gyro (#126-#139). In measuring the vibration of the detecting object, it defines the frequency pass band of the filtering means as the first frequency band and also drives and controls the driving means according to the driving requirements.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in electronic equipment such as a camera using a vibration gyro.

[0002]

2. Description of the Related Art In recent years, many electronic devices have a function of detecting vibration using a vibration detection sensor.

Among them, in an optical electronic device for recording an image / video such as a camera, a digital camera, a video, etc., a low frequency (for example, 1 to 1) which is generated when a user holds an image (recording) operation by hand. In order to reduce the shake of about 10 Hz), so-called "hand shake", the output (angular velocity signal) of the vibration gyro which is the vibration detection sensor is amplified and converted into an angle signal via an integrator, and the angle signal There are many systems that drive a part of the photographing optical system (correction optical system) based on the above, and reduce the shake on the image pickup medium such as a film or CCD.

By the way, some of the above vibrating gyros use a quartz oscillator. The crystal oscillator type vibration gyro is designed to drive a tuning fork type oscillator at a predetermined driving frequency (tens of k
(Hz), the Coriolis force generated by external vibration is detected as an angular velocity.

Since the above-mentioned vibration gyro uses a crystal oscillator, detuning (for example, several hundred Hz) occurs, and the vibration detection sensitivity becomes higher than the normal range in the vicinity of the detuning frequency X (Hz). It has the feature that the sensitivity becomes a peak. As described above, a frequency that becomes highly sensitive due to detuning is generally referred to as “detuning frequency” (see FIG. 2). When the vibration gyro is used in an optical electronic device with a vibration detection function, etc. Since it is a camera shake, it is only necessary to detect vibrations with a frequency of several Hz, so normally vibrations in the vicinity of the detuning frequency of the vibration gyro are not detected. There is a drive source such as a drive motor, and the vibration frequency generated by driving the motor may match the detuning frequency of the vibration gyro. Therefore, when the vibration frequency and the separation frequency are equal to or extremely close to each other, the detection sensitivity of the vibration gyro is high, so a large angular velocity signal is output, which exceeds the dynamic range of the detection circuit. Although the vibration is outside the detection target, it may be combined with the signal of the “camera shake” correction target to cause incorrect correction driving.

FIG. 11 is a diagram showing an example of the difference between the detection signal of the vibration gyro and the movement of the correction optical system depending on the presence or absence of the influence of the driving source.

FIG. 11A shows the output of the vibration gyro when a low-frequency shake equivalent to hand shake (a sine wave of 5 Hz) is given, and FIG. 11B shows the output in addition to the above-mentioned FIG. High-frequency vibration smaller than the low-frequency vibration from the drive source that matches the detuning frequency of the vibration gyro (probably 300 Hz)
Is the output of the vibrating gyro when
11C and 11D show the drive current of the correction optical system generated based on the output of the vibration gyro shown in FIGS. 11A and 11B.

As can be seen from FIGS. 11 (a) and 11 (c), the correction optical system can be driven properly in the case of only the low frequency shake to be corrected, but as shown in FIG. 11 (b). Due to the addition of vibration from the driving source, it is recognized as a large signal due to the difference in amplification degree, although it is a minute vibration.

Even when the high frequency vibration (vibration due to the driving source) is applied as a large signal, the correction optical system is mechanically difficult to follow the high frequency.

[0010]

However, this large signal causes a waveform that exceeds the dynamic range Vmax of the detection circuit, and as a result, the drive current of the correction optical system is affected by the offset and the gain.
A correction drive different from the desired control will be performed.

A vibrating gyro other than the above-mentioned crystal oscillator type, for example, a vibrating gyro of a ceramic oscillator type also has a resonance frequency and has a characteristic that detection rapidly increases in the vicinity of the resonance frequency. Even at the resonance frequency, when vibration near the resonance frequency is externally applied, the reference may be deviated by vibration other than the detection target (hand shake), resulting in erroneous detection of vibration.

As a countermeasure against erroneous detection of vibration due to external vibration applied near the resonance frequency of the vibration gyro, Japanese Patent Laid-Open No. 1213838/1993 discloses that "a frequency identification means for a shake signal is provided and the identification is performed by the identification means. The cutoff frequency of the low-pass filter of the shake signal processing means is changed based on the average frequency of the shake frequencies. ”

However, the above-mentioned proposal changes the degree of influence on shake detection due to the frequency characteristic (attenuation slope) of the low-pass filter, and the shake detection target frequency and the vibration gyro sensitivity peak frequency (resonance frequency, detuning frequency, etc.). If is sufficiently separated, it is possible to attenuate the vibration near the resonance frequency to an output that does not affect shake detection by the frequency characteristic (gain attenuation) of the low-pass filter, but the shake detection target frequency and the sensitivity of the vibration gyro With a vibration gyro with a close peak frequency, if the gain of the shake detection target frequency is sufficiently secured, the gain near the peak sensitivity frequency cannot be attenuated sufficiently, and it is difficult to completely eliminate the effect of the generated vibration. Becomes If a high-order (second-order, third-order, etc.) low-pass filter is used, the frequency characteristic will be improved (attenuation slope will be steep), and the effect will be exhibited, but the circuit scale will be increased.

In addition, as a measure against erroneous vibration detection due to external vibration applied near the resonance frequency of the vibration gyro,
Japanese Unexamined Patent Publication No. 07-115781 proposes that "the resonance frequency of the vibration gyro and the resonance frequency of the ultrasonic motor, which causes external vibration, are set separately."

Further, as a countermeasure against erroneous detection for a crystal oscillator type vibration gyro, a proposal has been made that "the detuning frequency of the vibration gyro and the rotation frequency of the actuator driving motor are set separately." There is.

However, the frequency at which the sensitivity peak of the above-mentioned vibration gyro has individual variations, and the vibration generated by the drive source is also affected by the processing precision of the parts and the built-in state. In consideration of all the conditions and tolerances, it is necessary to set the driving state of the driving source that does not affect the vibration measurement of the vibration gyro detection target.

For example, the detuning frequency is 300 Hz ± 100.
Assuming that the vibration gyro of the standard of Hz has a housing configuration in which vibration corresponding to the drive amount (rotation speed) of the drive source (motor) is generated in the vibration gyro, the drive source is 1200
Control may be performed at a drive amount of 0 rpm (200 Hz) or less, but the actual design value must take into consideration the change in the drive force-vibration amount due to variations in the assembly of the housing.
If it is set that 5% variation occurs, 1140
The drive amount must be set to 0 rpm (190 Hz) or less.

Further, in addition to that, since the vibration of the housing also generates harmonics, when the housing vibration of 190 Hz occurs,
We also have to consider the second harmonic, 380 Hz,
It becomes very difficult to make it a design.

(Object of the Invention) The first object of the present invention is to reduce the design load for erroneous detection of the vibration of the detection target which occurs when the vibration outside the detection target matches the high sensitivity band of the vibration gyro. At the same time, it is intended to provide an electronic device that can be more reliably prevented.

A second object of the present invention is to perform erroneous detection of the vibration of the detection target generated when the vibration other than the detection target coincides with the high sensitivity band of the vibration gyro on a specific sequence to improve operability. The present invention intends to provide an electronic device that can take the above into consideration.

[0021]

In order to achieve the first object, the invention described in claims 1 to 10 has stable sensitivity in a frequency band of vibration to be detected and is not detected. Vibration gyro having high sensitivity frequency characteristics in the frequency band of vibration, vibration detection means for detecting vibration from the output of the vibration gyro, and drive control during vibration measurement of the detection target by the vibration detection means And a vibration detecting means having a filter means capable of switching a pass frequency band through which a signal of a predetermined frequency is passed, and at the timing of vibration measurement outside the detection target, The pass frequency band of the filter means is set to the second frequency band, and while the drive means is driven and the control state at the time of drive is changed, the output state of the vibration detection means is determined. , The drive condition of the drive means when the vibration due to the drive of the drive means during the measurement of the vibration of the detection target by the vibration detection means has little influence on the detection of the vibration gyro, on the other hand, the vibration detection means When performing the vibration measurement of the detection target by setting the pass frequency band of the filter means to the first frequency band,
The drive means is an electronic device that controls the drive according to the drive conditions.

In order to achieve the second object,
The invention according to claim 4 is the electronic device according to any one of claims 1 to 3, wherein the timing of the vibration measurement outside the detection target is immediately after the operation start switch of the electronic device is turned on. It is a thing.

Also in order to achieve the above second object,
According to a fifth aspect of the present invention, the electronic device is provided with an operation mode including a vibration measurement operation of a detection target by the vibration detection means, and an adjustment mode in which the vibration detection means measures vibrations outside the detection target. The electronic device according to any one of claims 1 to 3, wherein the timing of the vibration measurement outside the detection target is when the adjustment mode is set.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail based on the illustrated embodiments.

FIG. 1 is a perspective view showing a schematic structure of a camera system which is an optical electronic device with a vibration detecting function according to each embodiment of the present invention.

In FIG. 1, reference numeral 1 is a two-stage switch that constitutes a switch SW1 for instructing the start of capturing imaging information and a switch SW2 for instructing the start of exposure, and 2 is a known distance measurement operation when the switch SW1 is operated. A distance measuring (AF) device 3 for performing a known photometric (AE) device for performing a known photometric operation when the switch SW1 is operated, and a known photographing optical system 4 (hereinafter also referred to as Lens), L
A part of ens4 has a correction optical system (hereinafter,
5) (also referred to as Shift), a shutter (not shown), and the like.

A motor 6 is a drive source for adjusting the optical focus by moving the Lens 4 from a standby (stored) state to a photographing ready state or by moving the Lens 4 according to the detection result of the AF device 2. Reference numerals 7 and 8 are vibration gyros (hereinafter referred to as Gyro-Y and Gyr) attached to the camera body to detect horizontal shake and vertical shake of the camera.
It is also described as o-P).

The above-mentioned Gyro-Y7 and Gyro-P8
The drive frequencies of are set to different frequencies (for example, 27 kHz and 29 kHz) to prevent interference. In addition, the detuning frequency of the Gyro-Y7 and Gyro-P8 is, as shown in FIG.
(It is set to (Hz)), and the gain at the detuning frequency is higher than the steady range by Y (dB) (for example, 20 (dB) = 10 times). In this embodiment, for convenience of explanation, it is assumed that Gyro-Y7 and Gyro-P8 have similar frequency characteristics.

The operation start switch 16 drives the motor 6 each time it is pressed to move the Lens 4 from a standby (stored) state to a photographic ready state or from a photographic ready state to a standby (stored) state. (MainSW)
Is.

FIG. 3 is a block diagram showing an outline of the electrical construction of the camera system, and the same parts as those in FIG. 1 are designated by the same reference numerals.

Reference numeral 10 denotes a control circuit for controlling the camera system, which is a storage unit 1 for storing control information.
It has 0-1. Reference numeral 11 is a battery serving as a basic power source of the camera system, 12 is a shutter (SH) arranged in a part of Lens 4, 13 is a lens barrel control device for controlling the motor 6, and 14 is Gyro-Y7 and Gyro-P8. Is a vibration detecting unit for converting the output signal (angular velocity output) into an angular displacement. The vibration detecting unit 14 is composed of filters (high-pass filter and low-pass filter), and the pass band of each filter is controlled by the control circuit 10. Switching (for example, 0.1Hz-5Hz and 150Hz-450H
It is possible to switch z). The method of switching the pass band is well known, and a description thereof will be omitted. For example, a method of switching the resistance value using an analog switch is used.

15 is Gyro-Y7, Gyro-P8
And a shake correction control circuit for driving the Shift 5 in the shake correction direction based on the shake information obtained by the vibration detector 14.

(First Embodiment) FIGS. 4 to 6 are diagrams relating to the first embodiment of the present invention, and are flowcharts showing the operation of the control circuit 10 in the camera system having the above-described configuration.

First, referring to FIG. 4, this flow starts when some operation is performed in the operation standby state.

In step # 101, it is determined whether or not the storage area: Main flag in the storage unit 10-1 is "1" in order to determine whether or not the photographing is possible.
If it is "1", it is determined that the photographing is already possible and the process proceeds to step # 104. If it is not "1", it is determined that the device is in the stored state and the process proceeds to step # 102.

When the process proceeds to step # 102, MainSW
It is determined whether 16 is turned on, and MainSW1
If 6 is not turned on, it returns to the operation standby state.
If the inSW 16 is turned on, the process proceeds to step # 103. It is determined that the MainSW 16 is turned on, the motor 6 is driven through the lens barrel control circuit 13, the Lens 4 is moved from the standby (stored) state to the photographing ready state, and the operation standby. Return to the state. Details of step # 103 will be described with reference to FIG.

Assuming that the Main flag is "1", the process proceeds from Step # 101 to Step # 104.
It is determined whether the SW16 is turned on, and the Main
If the SW 16 is not turned on, the routine proceeds to step # 105, where the motor 6 is driven via the lens barrel control circuit 13 to move the lens 4 from the image-capable state to the stored state. Then, in the next step # 106, it is determined whether or not the lens position detection switch (STOP_SW) (not shown) detects the housed state, and when the housed state is detected, the process proceeds to step # 107, and the motor 6 The driving is stopped and Lens 4 is put in the stored state. Continued Step # 108
Then, the storage area: Main flag in the storage unit 10-1 is set to "0" to store the stored state, and the operation standby state is returned to.

In step # 104, Main
When it is determined that SW16 is turned on, step #
In step 109, it is detected whether or not the switch SW1 is turned on. If not, the operation standby state is returned. On the other hand, if it is turned on, the process proceeds to step # 110, and a well-known photographing operation including a camera shake detection operation is performed. Details of step # 110 will be described with reference to FIG.

Next, in step # 103, that is,
The detailed operation immediately after the MainSW 16, which is the operation start switch, is turned on will be described with reference to the flowchart of FIG.

In step # 121, the remaining voltage of the battery 11 is checked by an A / D converter (not shown) built in the control circuit 10. And next step # 12
In step 2, it is determined whether the remaining battery charge V checked in step # 121 is equal to or more than a predetermined value Vth, and V> Vt.
If h, the process proceeds to step # 124, and if V> Vth, the process proceeds to step # 123.

When the process proceeds to step # 123, the user is warned that the battery level V is not in the camera drivable state by using a display device or the like (not shown), and the sequence ends.

If the remaining battery charge V is equal to or higher than the predetermined value Vth, the process proceeds to step # 124, and the storage area Main flag in the storage unit 10-1 is set to "1". Then, in the next step # 125, the pass band of the filter of the vibration detector 14 is set to the second frequency band (for example, 150H).
z to 450 Hz). The second frequency band includes the vibration gyro Gyro-Y7 and Gyro-P.
It is a frequency that covers eight high sensitivity regions (for example, detuning frequency).

In the next step # 126, Gyro-Y
7 and Gyro-P8 and the vibration detection unit 14 are started to start the vibration detection operation. And the next step #
At 127, the driving pattern of Lens 4 (for example, PW
(ON / OFF ratio of M drive, etc.) is called from a predetermined area: PWM of the storage unit 10-1 and set as a drive pattern: Mdata of the Lens4. Continued Step # 12
In 8, the motor 6 is rotated by the drive pattern of Mdata, and the driving of Lens 4 is started.

In the next step # 129, it is determined whether or not the vibration amount B detected by the vibration detecting unit 14 is smaller than a predetermined value Bth. If B <Bth, the process proceeds to step # 130 and the storage unit. Storage area in 10-1: NG
The flag is set to "1" and the process proceeds to step # 132. On the other hand, if B <Bth, the process proceeds to step # 131 to recognize the standby position of Lens 4 in the image-capable state.
It is checked whether or not a switch (LensSW) not shown is turned on. If it is not turned on, the process returns to step # 129, and if it is turned on, the process goes to step # 132.

At step # 132, the motor 6 is stopped and the driving of Lens 4 is stopped. Then, in the next step # 133, the storage area in the storage unit 10-1: N
Check G flag, if not "1", step # 1
34, the driving of the Gyro-Y7 and Gyro-P8 and the vibration detection unit 14 is stopped, the vibration detection data is also cleared, this flow is ended, and the flow returns to the flow of FIG.

As a result of checking the NG flag,
If it is "1", the process proceeds to step # 135 and the storage unit 10-
Storage area within 1: Reset NG flag (to "0")
To do. Then, in the next step # 136, the motor 6 is rotated in the reverse direction to drive the Lens 4 in the standby (stored) position direction. In a succeeding step # 137, a switch (S) (not shown) for recognizing the standby (storage) position of Lens 4 is detected.
TOP_SW) is turned on, and if it is not turned on, this step is repeated, and if it is turned on, the process proceeds to step # 138.

At step # 138, the motor 6
To stop the driving of Lens4. Then, in the next step # 139, the driving pattern of Lens 4 (for example, the ON / OFF ratio of PWM driving) is set to Le.
Driving pattern of ns4: A value obtained by changing a predetermined amount from Mdata (for example, a value obtained by subtracting 8 counts) is set again,
The change data is also stored in the predetermined area: PWM of the storage unit 10-1, the vibration amount detection data B is also cleared once, and the process returns to step # 128.

That is, the flow of FIG. 5 sets the filter of the vibration detection unit 14 to the second frequency band and controls the vibration generated by the motor 6 which is the drive source, even though the motion is not the target of actual camera shake detection. The drive control condition of the drive source is detected and the drive control condition (motor rotation speed) is changed to find the drive control condition of the drive source that has little influence on the detection of the vibration gyro even when the drive is performed.

Next, the detailed operation in step # 110 in FIG. 4 will be described with reference to the flowchart in FIG.

In step # 151, the remaining voltage of the battery 11 is checked by an A / D converter (not shown) built in the control circuit 10. Then, the next step # 15
In step 2, it is determined whether or not the remaining battery charge V checked in step # 151 is equal to or greater than a predetermined value Vth, and V> Vt.
If not h, the process proceeds to step # 153, a user is warned that the battery level V is not in a camera drivable state by using a display device or the like (not shown), the flow is ended, and the flow of FIG. Return to.

If V> Vth, step # 152.
To Step # 154, Gyro-Y7, Gyr
Power is supplied to o-P8 to bring it into an operating state. And
In the next step # 155, a known photometric operation is performed by the photometric device 3, and in the following step # 156, the distance measuring device 2
The known distance measurement operation is performed. And step # 15
7, the above-mentioned step # 155 and step # 156
Based on the photometric information and the distance measurement information obtained in step 3, a calculation for determining the focus adjustment position of the optical system and the exposure time (the opening time of the shutter 12) is performed.

In the next step # 158, the vibration detector 1
The pass band of the filter No. 4 is the first frequency band (for example, 0.1 Hz) that is the measurement frequency band of the observation target (camera shake).
˜5 Hz). Then, the next step # 159
Then, a driving pattern of Lens 4 (for example, ON / OFF ratio of PWM driving) is called from a predetermined area: PWM of the storage unit 10-1, and a driving pattern of Lens 4 is:
Set as Mdata. This drive pattern: Mda
The ta is drive control that is not easily influenced by the drive even in the high sensitivity region of the vibration gyro determined by the sequence of FIG.

At the next step # 160, the switch SW
2 is turned on, and if it is not turned on, the process proceeds to step # 161, and the switch SW1 is turned off.
It is checked whether or not it has been done, and if it has not been turned off, the process returns to step # 160 again, and if it has been turned off, this flow is ended and the process returns to the flow of FIG.

If the switch SW2 is turned on, the process proceeds to step # 162, the driving of the vibration detecting section 14 is started, and the vibration amount B detecting operation is started. And step # 1
63, the Mdat set in step # 159 is set.
Rotate the motor 6 according to the drive pattern of
The driving of s4 is started. In the next step # 164, Lens4 is set to the focus adjustment position obtained in step # 157.
Is detected by a sensor (not shown) or the like, and when the focus position is reached, the process proceeds to step # 165.

At step # 165, the motor 6
To stop the driving of Lens4. Then, in the next step # 166, the shake correction control circuit 15 is based on the detection result of the vibration amount B started in step # 162.
To start driving Shift5. From step # 166 to step # 171, the vibration detection unit 14
The drive control of Shift5 will be continued based on the output of.

Following Steps # 167, # 168, # 1
Reference numeral 69 controls the opening / closing of the shutter 12 (exposure control on the film) based on the exposure time obtained in step # 157. Then, in the next step # 170, Gy
The power supply to ro-Y7 and Gyro-P8 and the operation of the vibration detection unit 14 are stopped. In the following step # 171, the shake correction control circuit 15 is controlled to stop the driving of the Shift 5, and in the next step # 172, the lens barrel control circuit 13 is controlled to return the Lens 4 to the initial position (shooting standby position). . Then, in step # 173, the feeding device (not shown) feeds the film by one frame, and enters the standby state for the next operation.

The above-mentioned FIGS. 4 to 6 show the first embodiment of the present invention.
Is a series of operations in the control circuit 10 of the camera system in the above mode.

According to the first embodiment described above, the timing (so-called Ma) other than the vibration measurement timing of the detection target (so-called hand-shake detection timing during photographing operation).
Immediately after the inSW 16 is turned on), the drive control of the motor 6 is changed while detecting the vibration generated by the drive of the motor 6 while the filter band of the vibration detection unit 14 is switched, and the drive control condition with less influence is set. By doing so, it is possible to eliminate the influence of the drive source vibration when actually performing the detection target measurement.

(Second Embodiment) In the first embodiment, the detection of vibration outside the detection target, that is, the detection of vibration due to the drive of the motor as the drive source is an operation outside the vibration detection target. However, it was performed in the general operation (immediately after the main SW16 was turned on).

However, with respect to the drive control of the drive source that does not have the influence of vibration, basically, once it is set, the influence thereafter disappears. By including the adjustment mode (for factory process) in which the adjustment is performed only under the condition, the main operation can be performed without impairing the operability of the user.

The second embodiment of the present invention relates to an electronic device having a normal operation mode and an adjustment mode which is a second mode for measuring vibration outside the detection target and determining drive control of the drive source. explain.

In the second embodiment as well, the same camera system as in the first embodiment will be described as an electronic device. In addition to the first embodiment described above, an external input member (not shown) can be used in the memory unit 0-1 to input data for entering the adjustment mode T in a predetermined area. It is assumed that the external data input to the storage unit is already known, and the description thereof is omitted.

FIG. 7 is a flow chart showing the operation of the control circuit 10 provided in the camera system according to the second embodiment of the present invention. As in the case of FIG. 4 described above, some operation is performed in the operation standby state. To start the operation.

In step # 201, it is determined whether or not the storage area: Main flag in the storage unit 10-1 is "1" in order to determine whether or not the photographing is possible.
If it is "1", it is determined that the photographing is possible, and the process proceeds to step # 206. If it is not "1", the device is in the stored state and the process proceeds to step # 202.

When the process proceeds to step # 202, MainSW
It is determined whether 16 is turned on, and MainSW1
If 6 is not turned on, it returns to the operation standby state and Mai
If nSW is turned on, the process proceeds to step # 203. Then, in this step # 203, it is checked whether or not the data of the adjustment mode T is stored in the predetermined area of the storage unit 10-1, and if it is the adjustment mode, the process proceeds to step # 204 to drive the motor 6 and detect it. The control setting operation of the drive source that is less affected by the non-target vibration is performed, and the operation standby state is returned. Details of step # 204 will be described with reference to FIG. on the other hand,
If it is not in the adjustment mode, the process proceeds to step # 205 and Mai
Assuming that nSW is turned on, drive the motor 6 and
The s4 is moved from the standby (stored) state to the photographing ready state, and the operation standby state is returned. Details of step # 205 will be described with reference to FIG.

In step # 201, Main
If the flag is "1", as described above, step # 2
In step 06, it is determined whether or not the MainSW 16 is turned on. If the MainSW 16 is not turned on, the process proceeds to step # 207 and the MainSW is turned on.
If so, the process proceeds to step # 211.

At step # 207, the motor 6
Is driven to move Lens 4 from the image-capable state to the stored state. Then, in the next step # 208, it is determined whether or not the lens position detection switch (not shown) has detected the housed state, and when the housed state is detected, step # 2
09, the drive of the motor 6 is stopped, and Lens4
To the storage state. In the following step # 210, the storage area: Main flag in the storage unit 10-1 is set to "0" to store the stored state, and the operation standby state is returned to.

Further, from step # 206 to step # 2
When it proceeds to 11, it is detected here whether the switch SW1 is turned on. If it is not turned on, the operation returns to the operation standby state immediately, but if it is turned on, the operation proceeds to step # 212, which includes a camera shake detection operation. A known shooting operation is performed. The details of step # 212 are the same as those of FIG. 6 which has already been described, and therefore the description thereof will be omitted in the second embodiment.

Next, the detailed operation in step # 204 in FIG. 7 will be described with reference to the flowchart in FIG.

At step # 221, the remaining voltage of the battery 11 is checked by an A / D converter (not shown) built in the control circuit 10. Then, the next step # 22
In step 2, it is determined whether or not the remaining battery level V checked in step # 221 is equal to or more than a predetermined value Vth, and V> Vt.
If not h, the process proceeds to step # 223, and the user is warned that the battery level V is not in the camera drivable state by using a display device or the like (not shown), and this flow ends, and the flow of FIG. Return to.

On the other hand, if V> Vth, step # 222.
From step # 224, the storage area: Main flag in the storage unit 10-1 is set to "1". Then, in the next step # 225, the pass band of the filter of the vibration detection unit 14 is set to the second frequency band (for example, 150 Hz to 45 Hz).
0 Hz). The second frequency band is a frequency that covers the high sensitivity region (for example, detuning frequency) of the vibration gyro Gyro-Y7 and Gyro-P8.

In the next step # 226, Gyro-Y
7 and the Gyro-P8 and the vibration detection unit 14 are started to start the vibration detection operation. Then, the next step # 22
At 7, the drive pattern of Lens 4 (for example, ON / OFF ratio of PWM drive) is called from the predetermined area: PWM of the storage unit 10-1 and set as the drive pattern of Mlen of the Lens 4. Continued Step # 228
Then, the motor 6 is rotated by the drive pattern of Mdata, and the driving of Lens 4 is started.

In the next step # 229, the vibration detecting section 1
It is determined whether or not the vibration amount B detected from No. 4 is smaller than a predetermined value Bth, and if B <Bth, step # 2.
30, the storage area: NG flag in the storage unit 10-1 is set to "1", and the process proceeds to step # 232. Also, B
If it is Bth, the process proceeds to step # 231, and it is checked whether or not a switch (LensSW) (not shown) for recognizing the standby position of Lens 4 in the photographing enabled state is turned on. If not, step # 231 Return to 229, O
If NO, the process proceeds to step # 232. Step # 23
In 2, the motor 6 is stopped and the driving of Lens 4 is stopped.

At the next step # 233, the storage unit 10-
Storage area in 1: Check NG flag, if not “1”, proceed to step # 234, stop driving Gyro-Y7 and Gyro-P8 and vibration detection unit 14, clear vibration detection data, and The adjustment mode T in the predetermined area of the storage unit 10-1 is also cleared (normal operation mode)
Then, this flow is ended and the process returns to the flow of FIG. 7.

If the NG flag is "1", the process proceeds to step # 235, where the storage area in the storage unit 10-1 is N.
Reset the G flag (to "0"). Then, in the next step # 236, the motor 6 is rotated in the reverse direction to set the Lens
4 is driven toward the standby (storage) position. In the next step # 237, a switch (STOP_SW) (not shown) for recognizing the standby (storage) position of Lens 4 is turned on.
If it is not turned on, this step is repeated, and if it is turned on, the process proceeds to step # 238.

At step # 238, the motor 6 is stopped and the driving of Lens 4 is stopped. Then, in step # 239, the driving pattern of Lens 4 (for example,
The ON / OFF ratio of the PWM drive, etc.) is reset to a value (for example, a value obtained by subtracting 8 counts) obtained by changing the driving pattern of the Lens4: Mdata by a predetermined amount, and the change data is stored in the storage unit 10-1. Area: It is also stored in the PWM, the vibration amount detection data B is once cleared, and the process returns to step # 228.

That is, in the flow of FIG. 8, only when the adjustment mode T is set, the filter of the vibration detecting unit 14 is set to the second frequency band even though the operation is not the target of actual camera shake detection. By detecting the vibration generated by the motor 6 which is the drive source and changing the drive control state, the drive control condition of the drive source which has little influence on the detection of the vibration gyro even when driven is found.

Next, the detailed operation in step # 205 in FIG. 7 will be described with reference to the flowchart in FIG.

At step # 251, the remaining voltage of the battery 11 is checked by an A / D converter (not shown) built in the control circuit 10. And next step # 25
In step 2, it is determined whether or not the remaining battery level V checked in step # 251 is equal to or more than a predetermined value Vth, and V> Vt.
If not h, the process proceeds to step # 253, and the user is warned that the battery level V is not in the camera drivable state by using a display device or the like (not shown), and this flow is ended, and the flow of FIG. Return to.

If V> Vth, step # 252
From step # 254, and here the storage unit 10-1
Internal storage area: Main flag is set to "1". Then, in the next step # 255, the driving pattern of Lens 4 (for example, ON / OFF ratio of PWM driving) is called from a predetermined area: PWM of the storage unit 10-1, and the L
Drive pattern of ens4: Set as Mdata.
In the next step # 256, the motor 6 is rotated by the drive pattern of Mdata, and the driving of Lens 4 is started.

In the next step # 257, it is checked whether or not a switch (LensSW) (not shown) for recognizing the standby position of Lens 4 in the image-capable state is turned on. If it is turned on, the process proceeds to step # 258, The motor 6
Is stopped, driving of Lens 4 is stopped, this flow is ended, and the process returns to the flow of FIG. 7.

In the second embodiment described above,
The second mode (adjustment mode) has been described as being set by an external input member (not shown), but the present invention is not limited to this, and for example, simultaneous pressing of a plurality of switches (for example, a zoom switch and a remote controller). Even if the adjustment mode is set by a method such as simultaneous pressing of switches), or if an independent calibration switch is provided, there is no problem.

(Third Embodiment) In each of the above-described embodiments, the vibration is detected by driving the motor which is the driving source. In both cases, the driving source is driven to a predetermined position at the same speed, and the speed is changed. The drive source was driven again at the same position.

This method is capable of reliably recognizing vibration for a fixed operation, but has a drawback that it takes time to determine the drive control condition of the drive source because the same operation must be repeated. .

In the third embodiment of the present invention, a plurality of control information is obtained within a predetermined operation (while driving to a predetermined position) while gradually changing the drive operation control (speed) of the drive source. The time required to determine the driving conditions of the driving source is shortened.

Also in the third embodiment, the same camera system as in the first embodiment will be described.

FIG. 10 shows a MainSW16 which is an operation start switch according to the third embodiment of the present invention.
5 is a flow chart showing a detailed operation immediately after the input of the, and corresponds to the operation in step # 103 in FIG.

In step # 321, the remaining voltage of the battery 11 is checked by an A / D converter (not shown) built in the control circuit 10. Then, the next step # 32
In step 2, it is determined whether or not the battery remaining amount V checked in step # 321 is a predetermined value Vth or more, and V> Vt
If not h, the process proceeds to step # 323, and the user is warned that the battery level V is not in the camera drivable state using a display device or the like (not shown), and this flow is ended.

If V> Vth, step # 322.
From step # 324, the storage area: Main flag in the storage unit 10-1 is set to "1". Then, in the next step # 325, the pass band of the filter of the vibration detection unit 14 is set to the second frequency band (for example, 150 Hz 450).
Hz). The second frequency band is a frequency that covers the high sensitivity region (for example, detuning frequency) of the vibration gyro Gyro-Y7 and Gyro-P8.

In the next Step # 326, Gyro-Y
7 and the Gyro-P8 and the vibration detection unit 14 are started to start the vibration detection operation. Then, the next step # 32
At 7, the drive pattern of Lens 4 (for example, ON / OFF ratio of PWM drive) is called from the predetermined area: PWM of the storage unit 10-1 and set as the drive pattern of Mlen of the Lens 4. Continued Step # 328
Then, the motor 6 is rotated by the drive pattern of Mdata, and the driving of Lens 4 is started.

At step # 329, counting is performed for a predetermined period t (for example, 50 msec). This step # 3
Even while 29 is being executed, the vibration detecting unit 14 is performing the vibration detecting operation. After the lapse of the predetermined time, the process proceeds to step # 330, it is determined whether or not the vibration amount B detected by the vibration detecting unit 14 is smaller than the predetermined value Bth, and if B <Bth, the process proceeds to step # 333 to store. Storage area in section 10-1: NG flag is set to "0", and the process proceeds to step # 334.

On the other hand, if B <Bth is not satisfied, step # 3.
In step 31, the storage area: NG flag in the storage unit 10-1 is set to "1". Then, in the next step # 332, the driving pattern of Lens4 (for example, ON / OFF ratio of PWM driving) is set to the driving pattern of Lens4:
A value obtained by changing a predetermined amount from Mdata (for example, a value obtained by subtracting 8 counts) is reset and the changed data is stored in the storage unit 1.
Predetermined area of 0-1: Stored in the PWM, and also clear the vibration amount detection data B once. Since the Lens 4 is being driven, the driving is continued with the driving pattern: Mdata reset in step # 332. After that, the process proceeds to step # 334.

When the process proceeds to step # 334, it is checked whether or not a switch (LensSW) (not shown) for recognizing the standby position of Lens 4 in the image-capable state is turned on. If not, step # 329 Return to ON
If so, the process proceeds to step # 335. Step # 335
Then, the storage area: NG flag in the storage unit 10-1 is checked, and if "1", the process proceeds to step # 336.
If not "1", the process proceeds to step # 339.

When the process proceeds to step # 336, the motor 6 is rotated in the reverse direction and the Lens 4 is driven toward the standby (storage) position. Then, in the next step # 337, Lens4
Check whether the switch (STOP_SW), not shown, for recognizing the standby (storage) position of
If it is not ON, this step is repeated, and if it is ON, the routine proceeds to step # 338, where the motor 6 is rotated again by the drive pattern of Mdata, and the driving (feeding) of Lens 4 is started.

Also, from step # 335 to step # 3
When proceeding to 39, the motor 6 is stopped and the driving of Lens 4 is stopped. Then, in the next step # 340, Gy
The driving of ro-Y7 and Gyro-P8 and the vibration detection unit 14 is stopped, the vibration detection data is also cleared, and this flow is ended.

According to the third embodiment described above, by repeating steps # 329 to # 334, the drive control of the motor 6 which is the drive source is changed so that the drive source is operated within the same operation (one time extension). It is possible to obtain vibration information of a plurality of speeds in (operation), and it is possible to determine the drive control condition of the drive source in a short time.

[0097]

As described above, according to the invention described in claims 1 to 10, erroneous detection of the vibration of the detection target that occurs when the vibration outside the detection target matches the high sensitivity band of the vibration gyro is detected. It is possible to provide an electronic device capable of more reliably preventing the load while reducing the design load.

Further, according to the invention described in claim 4 or 5, the timing of erroneous detection of the vibration of the detection target that occurs when the vibration outside the detection target matches the high sensitivity band of the vibration gyro is specified. It is possible to provide an electronic device which can be operated in the sequence of and in consideration of operability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a camera system according to each embodiment of the present invention.

FIG. 2 is a diagram showing an example of frequency characteristics of a vibration gyro used in each embodiment of the present invention.

FIG. 3 is a block diagram showing an electrical configuration of a main part of a camera system according to each embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of a main part of the camera system according to the first embodiment of the present invention.

5 is a flowchart showing a detailed operation of step # 103 of FIG. 4. FIG.

FIG. 6 is a flowchart showing a detailed operation of step # 110 of FIG.

FIG. 7 is a flowchart showing an operation of a main part of the camera system according to the second embodiment of the present invention.

8 is a flowchart showing a detailed operation of step # 204 of FIG. 7. FIG.

9 is a flowchart showing the detailed operation of step # 205 of FIG. 7. FIG.

FIG. 10 is a flowchart showing an operation of a main part of the camera system according to the third embodiment of the present invention.

FIG. 11 is a diagram showing an example of a difference between a detection signal of a general vibration gyro and a movement of a correction optical system.

[Explanation of symbols] 2 ranging device 3 Photometric device 4 Shooting optical system 5 Correction optical system 6 motor (for optical focus adjustment) 7 Vibration gyro (for lateral shake detection) 8 Vibration gyro (for vertical shake detection) 10 Control circuit 10-1 Storage 11 batteries 12 shutters 13 Lens barrel drive circuit 14 Vibration detector 15 Shake correction control circuit 16 Operation start switch (MainSW)

Claims (10)

[Claims] 1. A vibration gyro having stable sensitivity in the frequency band of vibration to be detected and having high sensitivity frequency characteristics in the frequency band of vibration outside the detection target, and vibration is detected from the output of the vibration gyro. And a drive unit that is drive-controlled while the vibration of the detection target is being measured by the vibration detection unit, wherein the vibration detection unit is a pass frequency band that passes a signal of a predetermined frequency. At a timing of the vibration measurement outside the detection target, the pass frequency band of the filter unit is set to a second frequency band, and the driving unit is driven at the same time. Based on the output state of the vibration detecting means, the driving means is driven while the vibration of the detection target is being measured by changing the control state during driving. When the drive condition of the drive means when the vibration has little influence on the detection of the vibration gyro, on the other hand, when the vibration of the detection target is measured by the vibration detection means, the pass frequency band of the filter means is set to An electronic device, wherein the frequency is set to 1 and the drive means is drive-controlled according to the drive condition. 2. The electronic device according to claim 1, wherein the second frequency band is a frequency band including a frequency periphery where the vibration gyro has high sensitivity. 3. The driving source is a motor, and changing the control state of the driving means during driving means changing the rotation speed of the motor. Electronics. 4. The electronic device according to claim 1, wherein the timing of the vibration measurement outside the detection target is immediately after the operation start switch of the electronic device is turned on. 5. The electronic device has an operation mode including a vibration measurement operation of a detection target by the vibration detection means, and an adjustment mode for measuring vibrations outside the detection target by the vibration detection means. The timing of the vibration measurement outside the detection target is when the adjustment mode is set.
The electronic device according to any one of 1 to 3. 6. The driving condition of the driving unit when the vibration of the detection target is measured by the vibration detecting unit is to set the pass frequency band of the filter unit to a second frequency band, and to drive the driving unit. 2. When the drive control state of the means is changed, it is obtained based on the drive control state when the output obtained by the vibration detecting means becomes lower than a predetermined value. 6. The electronic device according to any one of 5 to 5. 7. When obtaining the drive condition of the drive means,
7. The changing of the drive control state of the drive means is performed every time a driven member driven by the drive means is driven from an initial position to a predetermined position. Electronics. 8. When obtaining the drive condition of the drive means,
7. The changing of the drive control state of the drive means is performed while the driven member driven by the drive means is driven from an initial position to a predetermined position. Electronics. 9. The electronic device according to claim 1, wherein the vibration measurement of the detection target is a measurement of a camera shake of a user. 10. The electronic device according to claim 1, which is an optical electronic device for recording an image or a video.