JP4793421B2 - Vibration detection device, camera and interchangeable lens - Google Patents

Description

  The present invention relates to a vibration detection device, a camera, and an interchangeable lens that detect vibration or blur in an imaging device such as a camera or a video movie.

  Conventionally, as an example of this type of vibration detection apparatus, an apparatus that detects acceleration or angular velocity generated in the apparatus using an acceleration sensor or an angular velocity sensor is known. In general, such an acceleration sensor or angular velocity sensor itself outputs only a minute voltage with respect to a given vibration. Therefore, the configuration is such that a necessary voltage is output using an appropriate amplifier outside the sensor. I was taking it. However, sensors that detect such vibrations, particularly piezoelectric vibration gyros that are generally used in cameras, etc., output extremely unstable in the range of several tens to several hundreds of milliseconds immediately after the power is turned on. Output drift occurs even after power is turned on. Further, the voltage when vibration is not applied (hereinafter referred to as a stationary output voltage) is not limited to a constant value, and varies greatly depending on the variation of the vibration gyroscope or the use environment, particularly the use temperature. Such output fluctuations when the power is turned on are so large as to be insignificant compared to the level of the output signal with respect to the vibration to be originally detected due to acceleration or angular velocity, and may be extremely large in some cases.

  Conventionally, for example, a vibration detection circuit disclosed in Japanese Patent Application Laid-Open No. 7-218953 is known as a vibration detection device that suppresses the influence of output fluctuations when power is turned on as much as possible. The vibration detection circuit includes an angular velocity sensor, a high-pass filter that cuts an allowable frequency lower than the frequency of the vibration to be detected from the output of the angular velocity sensor, and an amplification unit that amplifies the signal that has passed through the high-pass filter. Etc.

  FIG. 42 is a circuit diagram showing a vibration detection circuit in a conventional vibration detection device. The vibration gyro 100 detects an angular velocity generated in the apparatus by vibration by a piezoelectric element. The circuit 200 is a third-order low-pass filter circuit for removing high frequency components from the output of the vibration gyro 100. The circuit 300 is an amplifier circuit that non-inverts and amplifies the output signal of the circuit 200 using an operational amplifier OP200 and resistors R600 and R700. The circuit 300 constitutes a high-pass filter that removes a low-frequency component that does not depend on vibration by the capacitor C400 and the resistor R400. The low cut-off frequency determined by the capacitor C400 and the resistor R400 needs to be sufficiently lower than the vibration frequency to be detected so as not to affect the vibration generated in the apparatus. For this reason, the cutoff frequency is set to about 0.1 Hz as an example of a specific numerical value.

  The analog switch SW100 shifts the cut-off frequency to the high frequency side in the on-operation state and is turned on for a predetermined time when the power is turned on, and the output signal Vout is affected by the output fluctuation when the vibration gyro 100 is turned on. This is to suppress as much as possible. When the analog switch SW100 is in the OFF state, the frequency of the low frequency cutoff is determined by the capacitor C400 and the resistor R400. The power supply circuit 400 supplies a stable power supply to the vibrating gyroscope 100 and the circuits 200 and 300. The one-chip computer (hereinafter referred to as MCU) 500 digitizes the output signal Vout from the circuit 300 by using the built-in A / D converter 500a, recognizes the vibration generated in the apparatus, and controls the control signal generator 500d. The operation of the power supply circuit 400 is controlled by the signal PC. Further, the MCU 500 controls the on operation and the off operation of the analog switch SW100 by the operation signal SSW of the operation signal generator 500b.

  In the vibration detection devices disclosed in Japanese Patent Laid-Open Nos. 7-253604 and 8-82820, the output of the vibration gyro and the reference voltage are differentially amplified by the differential amplifier, and the output is generated in the device. Vibration is detected. The effects such as the output drift of the vibrating gyroscope when the power is turned on and the fluctuation of the vibrating gyroscope of the stationary output voltage can be eliminated by changing the reference voltage and keeping the differentially amplified output within its output dynamic range. Yes.

  However, the conventional vibration detection apparatus has a problem relating to the dynamic range and detection resolution of the vibration to be detected. For example, in the case of detecting an angular velocity due to shake vibration with a silver halide camera having a shake correction function, when a stationary subject is normally photographed, the maximum value of the shake angular velocity is approximately 20 to 30 ° / sec, although there are individual differences. It is. On the other hand, when panning the camera, taking a panning shot, or shooting a subject moving at a high speed, the angular velocity is much higher than when shooting a stationary subject, for example, an angular velocity exceeding 50 ° / sec. Occurs. When taking into consideration the angular velocity that may occur when shooting other than such a stationary subject, it is necessary to ensure a dynamic range of an angular velocity of 50 ° / sec or more.

  In a silver halide camera or a video movie having a blur correction function, as shown in FIG. 42, the detected output signal Vout is quantized into a digital value using the A / D converter 500a, and the quantized blur signal is obtained. Is generally used to correct blurring. In this case, since the quantization unit of the A / D converter 500a is finite, it is necessary to set a large amplification factor for amplifying the output of the vibrating gyroscope 100 and increase the resolution per bit of quantization. For this reason, from the viewpoint of improving the ratio (S / N) between the noise contained in the output of the operational amplifier OP200 and the signal to be detected, the gain of the amplifier circuit composed of the operational amplifier OP200 and the resistors R600 and R700 is increased. It is necessary to set large. However, since the output range of the operational amplifier OP200 is limited, the dynamic range of the angular velocity that can be detected decreases conversely when attempting to improve the resolution per quantization bit. Thus, when priority is given to the dynamic range of vibration to be detected, the resolution or S / N per quantization bit deteriorates, and detection is possible when resolution or S / N per quantization bit is prioritized. There is a problem that the dynamic range of a large vibration becomes narrow.

  Second, there is a problem caused by the time constant of the high pass filter. The cut-off frequency of the high-pass filter that constitutes the vibration detection device must be sufficiently low with respect to the frequency band of the vibration to be detected. For example, when a silver salt camera or a video movie is used, it is said that the frequency band of vibration is predominantly about 1 Hz to 15 Hz. In this case, the cut-off frequency of the high pass filter determined by the capacitor C400 and the resistor R400 must be kept low, for example, about 0.1 Hz. For this reason, the time constant determined by the capacitor C400 and the resistor R400 becomes very large, and as a result, the time until the output signal Vout becomes stable is so large that it cannot be ignored. In the vibration detection apparatus described in Japanese Patent Laid-Open No. 7-218953, the output of the vibration gyro 100 behaves unstable when the power is turned on. As a result, this vibration detection device has turned on the analog switch SW100 shown in FIG. 42 in order to ensure the stability of the output signal Vout.

  FIG. 43 is a timing chart when the conventional vibration detection apparatus is turned on. At timing t (hereinafter referred to as t) 0, the power supply circuit 400 operates by setting the control signal PC shown in FIG. 43 to High, and power is supplied to the vibrating gyroscope 100 and the circuits 200 and 300 through the power supply line Vdd. The By setting the operation signal SSW to High from t1 to t2, the influence of large output fluctuation when the vibration gyro 100 is turned on can be suppressed by turning on the analog switch SW100. At t2, the signal detected by the vibration gyro 100 after the operation signal SSW is set to Low is amplified by an amplifier composed of the operational amplifier OP200 and the like, and a signal corresponding to the vibration applied to the apparatus is substantially used as the output signal Vout. Is output.

  However, even if the analog switch SW100 is provided, an offset error due to the time constant of the high-pass filter occurs. For example, when vibration (sinusoidal angular velocity vibration) as shown in FIG. 43 is applied to the apparatus and the analog switch SW100 is turned off at t2, output of the output signal Vout is started with the angular velocity at t2 being substantially 0V. That is, when the angular velocity is zero, the output signal Vout is not output as a waveform that becomes 0 V, but as shown in FIG. 43, a waveform whose amplitude is biased upward is output. For this reason, a signal obtained by offsetting the vibration angular velocity given to the vibration gyro 100 by a certain error is output, and this error (hereinafter referred to as an offset error) is not a constant value but changes with time. Since the time constant is determined by the capacitor C400 and the resistor R400, the center of the amplitude of the output signal Vout approaches 0V. When the apparatus is used with vibration applied, a vibration detection error occurs in the output signal Vout due to the time constant determined by the capacitor C400 and the resistor R400. As a result, in order to detect an accurate angular velocity, it is necessary to wait until the offset error becomes an allowable amount from the time of turning on the power. Further, the time until the offset error can be ignored is an unacceptable time in a field to which such a vibration detection device is applied, particularly in a silver salt camera or the like.

  In Japanese Patent Laid-Open No. 7-218953, in order to reduce the offset error, the analog switch SW100 is turned on again from t3 to t4 at approximately the center of the amplitude of the output signal Vout to correct the amplitude to around 0V. . However, the above operation for reducing the offset error is not effective for all the vibration waveforms, and the offset error always occurs.

  Further, in the vibration detection apparatus according to Japanese Patent Laid-Open Nos. 7-253604 and 8-82820, a change in the reference voltage is amplified by a differential amplifier in order to differentially amplify the reference voltage and the output of the vibration gyro. Will be. The differential amplifier generally sets the output of a vibration gyro having a minute output to an amplification factor sufficient to obtain a necessary vibration detection resolution. For this reason, minute fluctuations in the reference voltage are amplified by the amplification factor and output by the differential amplifier. In the vibration detection device disclosed in Japanese Patent Laid-Open No. 7-253604, the differential voltage is changed by changing the reference voltage in order to suppress the influence of the output drift of the vibration gyro when the power is turned on and the variation of the output voltage of each vibration gyro at rest. It operates to keep the amplified output within its output dynamic range. As a result, it is necessary to suppress the fluctuation of the reference voltage as much as possible so that the output is not affected, and the reference voltage changing resolution, which is a step amount for changing the reference voltage, needs to have a somewhat high resolution. For this reason, circuit design of the reference voltage becomes very difficult, leading to an increase in cost.

The problem of the present invention is that, firstly, the detection resolution can be improved as much as possible while ensuring the dynamic range, and second, the vibration that can reduce the offset error due to the time constant of the high-pass filter. It is to provide a detection device, a camera, and an interchangeable lens.

The present invention solves the above problems by the following means . Ie, a first aspect of the present invention, detects the vibration, a vibration detecting section for outputting a vibration detection signal, and an output signal generator for generating an output signal, based on the vibration detection signal and the output signal The level is changed by a variable operation by the control unit that performs a predetermined calculation and generates a calculation output signal, a control unit that variably controls the level of the output signal based on the calculation output signal, and the control unit The correction unit includes a correction unit that generates a correction output signal by connecting the calculation output signals before and after the change, and an external operation detection unit that detects an external operation, and the control unit samples the calculation output signal. The correction unit includes a level of the calculation output signal at at least two times sampled before the variable operation and at least one calculation output sampled after the variable operation. The control unit calculates the corrected output signal by approximating based on the level of the signal, and the control unit outputs the calculated output signal to a predetermined reference level or according to an operation start or operation end detected by the external operation detection unit. The camera is characterized in that initial adjustment is performed in the vicinity of the predetermined reference level .

Invention according to claim 2, in the camera according to claim 1, wherein the external operation detecting section, half-press operation of the release button (31), operation of the operation or the zoom button of the activation button (32) (33) (S4101, S4107; S4201, S4210, S4216; S4301, S4310; S4401, S4410), the controller starts half-pressing the release button (t51; t101), and starts operating the start button (t91). Alternatively, the initial adjustment is performed in response to the start of zoom button operation (t61, t66) or the end of zoom button operation (t64, t68) (S4104, t52 to t53; S4505, t102 to t103, t105 to t106, t108 to t109; S4404, t92 to t93; S4204, t62 to t63, 66~t67, S4212, is a camera which is characterized in T64～t65,68～t69) that.

The invention according to claim 3 is the camera according to claim 1 or 2 , further comprising a power supply unit (4) for supplying power to at least the vibration detection unit, wherein the control unit detects the external operation. In response to detection of the operation start by the unit (S4101; S4201; S4301; S4401; S4501), the power supply unit starts to supply power to the vibration detection unit (S4102, t51; S4202, t61; S4302, t81; S4402, t91; S4502, t101), and the initial adjustment is performed (S4104, t52 to t53; S4204, t62 to t63; S4304, t82 to t83; S4404, t92 to t93; S4505, t102 to t103). Camera.

Invention according to claim 4, in the camera according to any one of claims 1 to 3, a power supply unit for supplying power to at least the vibration detection unit, wherein the control unit, the After the operation completion detection by the external operation detection unit (S4210, t68; S4307, t87; S4407, t94), and after a predetermined time has passed (S4217, S4309, S4409), the power supply to the vibration detection unit is performed. This is a camera characterized in that the camera is stopped (S4219, t70; S4312, t88; S4412, t95).

According to a fifth aspect of the present invention, a vibration detection unit that detects vibration and outputs a vibration detection signal, an output signal generation unit that generates an output signal, a predetermined signal based on the vibration detection signal and the output signal, A calculation unit that performs calculation and generates a calculation output signal, a control unit that variably controls the level of the output signal when the calculation output signal exceeds a predetermined range, and the level that has been changed by a variable operation by the control unit A correction unit that generates a correction output signal by connecting the calculation output signals before and after the change, and the control unit samples the calculation output signal, and the correction unit samples at least two samples before the variable operation. By approximating based on the level of the computation output signal at one time and the level of at least one computation output signal sampled after the variable operation Calculating the corrected output signal, the control unit, according to the internal operation, the operation output signal to initially adjust the vicinity predetermined reference level or the predetermined reference level, a camera characterized by.

According to a sixth aspect of the present invention, in the camera according to the fifth aspect , the control unit starts the focusing operation (S6610, t181, S6614, t185), ends the focusing operation (S6606, t183, t187), or starts the zooming operation. Prior to (S4208, S4209, t63, S4216, t67) or after the zooming operation (S4211, t64, t68), the initial adjustment is performed (S4204, t62 to t63, t66 to t67, S4212, t64 to t65, t68 to t69). It is a camera characterized by that.

According to a seventh aspect of the present invention, in the camera according to the fifth or sixth aspect , the power supply unit (4) that supplies power to at least the vibration detection unit is provided, and the control unit starts an internal operation. Before (S4208, t63, S6610, t181), supply of power to the vibration detection unit is started by the power supply unit (S4202, t61, S6610, t181), and the initial adjustment is performed (S4204, t62 to t63). , S6610, t181 to t182).

According to an eighth aspect of the present invention, in the camera according to any one of the fifth to seventh aspects, the camera includes at least a power supply unit that supplies power to the vibration detection unit. After the end of the operation (S4210, t68), the power supply to the vibration detection unit is stopped (S4219, t70) after a predetermined time has elapsed (S4217, t70). is there.

According to a ninth aspect of the present invention, in an interchangeable lens that can be attached to a camera body, a vibration detection unit that detects vibration and outputs a vibration detection signal, an output signal generation unit that generates an output signal, and the vibration detection signal And a calculation unit that performs a predetermined calculation based on the output signal and generates a calculation output signal, a control unit that variably controls the level of the output signal based on the calculation output signal, and a variable by the control unit The arithmetic output signal whose level has been changed by an operation is connected before and after the change, and includes a correction unit that generates a correction output signal, and an external operation detection unit that detects an operation from the outside, and the control unit includes: The arithmetic output signal is sampled, and the correction unit is configured to sample the level of the arithmetic output signal at at least two times sampled before the variable operation and the sample after the variable operation. The correction output signal is calculated by approximating based on the level of the at least one calculated output signal, and the control unit determines whether the external operation detection unit detects an operation start or an operation end, An interchangeable lens characterized in that an arithmetic output signal is initially adjusted to a predetermined reference level or in the vicinity of the predetermined reference level .

According to a tenth aspect of the present invention, in the interchangeable lens according to the ninth aspect , the external operation detection unit detects an operation of the distance ring (82) or the zoom ring (83) (S6501, t161, S6513, t166; S6401, t141, S6413, t146), and the control unit starts operation of the distance ring or zoom ring (t161, t166; t141, t146) or ends operation of the distance ring or zoom ring (t164, t168; The initial adjustment is performed according to t144, t148) (S6504, t162 to t163, t166 to t167, S6507, t164 to t165, t168 to t169; S6404, t142 to t143, t146 to t147, S6407, t144 to t145, t 148 to t 149) It is a diagram.

The invention according to claim 11 is the interchangeable lens according to claim 9 or 10 , further comprising a power supply unit (4) for supplying power to at least the vibration detection unit, wherein the control unit is configured to perform the external operation. In response to detection of operation start by the detection unit (S6401, t141; S6501, t161), the power supply unit starts power supply to the vibration detection unit (S6402, t141; S6502, t161), and the initial adjustment is performed. (S6404, t142 to t143, S6504, t162 to t163).

The invention according to claim 12 is the interchangeable lens according to any one of claims 9 to 11 , further comprising a power supply unit that supplies power to at least the vibration detection unit, and the control unit includes: After the operation completion detection by the external operation detection unit (S6407, t148, S6507, t168) and after a predetermined time has passed (S6412, t150; S6512, t170), the power supply unit supplies power to the vibration detection unit. (S6415, t150; S6515, t170).

According to a thirteenth aspect of the present invention, in an interchangeable lens that can be attached to a camera body, a vibration detection unit that detects vibration and outputs a vibration detection signal, an output signal generation unit that generates an output signal, and the vibration detection signal And a calculation unit that performs a predetermined calculation based on the output signal and generates a calculation output signal, a control unit that variably controls the level of the output signal based on the calculation output signal, and a variable by the control unit A correction unit that generates a correction output signal by connecting the calculation output signals whose levels have changed by operation before and after the change, the control unit samples the calculation output signal, and the correction unit performs the variable operation The level of the arithmetic output signal at at least two times sampled before and the level of at least one arithmetic output signal sampled after the variable operation. By approximating based on the calculated correction output signal, the control unit is characterized in accordance with the internal operation, to initially adjust, in the vicinity of a predetermined reference level or the predetermined reference level the operation output signal Interchangeable lens.

According to a fourteenth aspect of the present invention, in the interchangeable lens according to the thirteenth aspect , the control unit responds to the start of focusing operation (S6610, t181, S6614, t185) or the end of focusing operation (S6606, t183, t187). And an initial adjustment (S6606, t183 to t184, t187 to t188, S6610, t181 to t182, S6614, t185 to t186).

According to a fifteenth aspect of the present invention, in the interchangeable lens according to the thirteenth or fourteenth aspect , the power supply unit (4) that supplies power to at least the vibration detection unit is provided, and the control unit operates internally. Before starting (S4208, S4209, t63), supply of power to the vibration detection unit is started by the power supply unit (S4202), and the initial adjustment operation is performed (S4204, t62 to t63). It is an interchangeable lens.

The invention according to claim 16 is the interchangeable lens according to any one of claims 13 to 15 , further comprising a power supply unit that supplies power to at least the vibration detection unit, and the control unit includes: After the internal operation is finished (S4211, t68) and after a predetermined time has passed (S4217, t70), the power supply to the vibration detector is stopped (S4219, t70). It is.

According to a seventeenth aspect of the present invention, in an interchangeable lens that can be attached to a camera body, a vibration detection unit that detects vibration and outputs a vibration detection signal, an output signal generation unit that generates an output signal, and the vibration detection signal And a calculation unit that performs a predetermined calculation based on the output signal and generates a calculation output signal, a control unit that variably controls the level of the output signal based on the calculation output signal, and a variable by the control unit A correction unit that generates a correction output signal by connecting the calculation output signals whose levels have changed by operation before and after the change, the control unit samples the calculation output signal, and the correction unit performs the variable operation The level of the arithmetic output signal at at least two times sampled before and the level of at least one arithmetic output signal sampled after the variable operation. By approximating based on the calculated correction output signal, wherein, in response to power-on of the camera body, initially adjusts the operation output signal near a predetermined reference level or the predetermined reference level This is an interchangeable lens characterized by the above.

According to an eighteenth aspect of the present invention, in an interchangeable lens that can be attached to a camera body, a vibration detection unit that detects vibration and outputs a vibration detection signal, an output signal generation unit that generates an output signal, and the vibration detection signal And a calculation unit that performs a predetermined calculation based on the output signal and generates a calculation output signal, a control unit that variably controls the level of the output signal based on the calculation output signal, and a variable by the control unit A correction unit that generates a correction output signal by connecting the calculation output signals whose levels have changed by operation before and after the change, the control unit samples the calculation output signal, and the correction unit performs the variable operation The level of the arithmetic output signal at at least two times sampled before and the level of at least one arithmetic output signal sampled after the variable operation. By approximating based on, calculates the corrected output signal, wherein, in response to the communication from the camera body side, to initially adjust the operation output signal near a predetermined reference level or the predetermined reference level These are interchangeable lenses characterized by the above.

According to a nineteenth aspect of the present invention, in the interchangeable lens according to the eighteenth aspect , the control unit performs the initial adjustment in accordance with a predetermined communication command (S6303, t132, t136) from the camera body side ( S6307, t134 to t135, t137 to t138).

The invention according to claim 20 is the interchangeable lens according to any one of claims 17 to 19, further comprising a power supply unit (4) for supplying power to at least the vibration detection unit, and the control. The interchangeable lens unit is configured to cause the power supply unit to start supplying power to the vibration detection unit (S6101, t112; S6203, t123; S6305, t133) before the initial adjustment.
The invention according to claim 21 detects a vibration and outputs a vibration detection signal, performs a predetermined calculation based on the vibration detection signal, generates a calculation output signal, and detects the calculation An initialization unit that initializes a signal, a control unit that operates the initialization unit to pull the calculation output signal back into the predetermined range when the calculation output signal exceeds a predetermined range, and the control unit A correction unit that generates a correction output signal by connecting the calculation output signals whose levels have been changed by the pull back operation before and after the change, and the control unit samples the calculation output signal, and the correction unit includes: The level of the arithmetic output signal at at least two times sampled before the pull back operation and at least one arithmetic output sampled after the pull back The control unit calculates the correction output signal by approximating based on the level of the signal, and the control unit detects when the correction output signal exceeds a predetermined range, when the pull back operation exceeds a predetermined number of times, or when the vibration detection When the amount of change in the signal exceeds a predetermined amount, the vibration detecting device is characterized in that the initialization unit is operated to adjust the calculation output signal to or near a predetermined reference level .
The invention according to claim 22 is the vibration detection device according to claim 21, further comprising a power supply unit (14) for supplying power to at least the vibration detection unit, wherein the control unit supplies power to the vibration detection unit. In response to the start of power supply (S4102, S4202, S4302, S4402, S4502, S6101, S6203, S6305, S6402, and S6502), the initialization unit is operated to adjust the calculation output signal to a predetermined reference level or in the vicinity thereof. (S4104, S4204, S4304, S4404, S4504, S6103, S6205, S6307).
According to a twenty-third aspect of the present invention, in the vibration detection device according to the twenty-first or twenty-second aspect, the initialization unit includes a high-pass filter (C14, R14) that removes a low-frequency component from the vibration detection signal. And an amplifier (R16, R17, OP12) for amplifying the output of the high-pass filter, and the controller operates the initialization unit when the output (Vout) of the amplifier exceeds a predetermined range. The vibration detection apparatus is characterized by pulling back the output of the amplification unit within the predetermined range.
According to a twenty-fourth aspect of the present invention, in the vibration detecting device according to any one of the twenty-first to twenty-third aspects, the vibration detecting unit is an angular velocity detector (1, 11) or an angular velocity detecting angular velocity. The vibration detection device is an angular acceleration detector that detects acceleration or an acceleration detector (21) that detects acceleration.

  As described above in detail, according to the present invention, when the calculation output signal exceeds the predetermined range, the calculation output signal is pulled back into the predetermined range to generate the correction output signal. A signal can be detected and detection resolution can be improved. Further, since the error of the correction output signal is corrected based on the calculation output signal before the pull back operation, the calculation output signal exceeding the predetermined range can be detected accurately in real time. Furthermore, the calculation output signal can be adjusted to the predetermined reference level or in the vicinity thereof without being affected by the time constant.

[Vibration detector]
(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same circuit as the circuit shown in FIG. 42 is described with a corresponding reference numeral, and detailed description thereof is omitted. FIG. 1 is a diagram showing a vibration detection circuit in the vibration detection apparatus according to the first embodiment of the present invention.

  The vibration detection circuit according to the first embodiment of the present invention is different from the vibration detection circuit shown in FIG. 42, and the elements used in the circuit can be a single power source in order to make the application to a camera or a video movie easier. The configuration is usable.

  The vibrating gyroscope 1 detects an angular velocity generated in the apparatus due to shaking by a piezoelectric element. The vibrating gyroscope 1 outputs a stable voltage of about ½ of the power supply line Vdd as the reference voltage Vref1, and this reference voltage Vref1 serves as a reference potential for the circuits 2 and 3. The vibration gyro 1 outputs a vibration detection signal Vo corresponding to the applied vibration around a voltage of about the reference voltage Vref1.

  The circuit 2 is composed of resistors R1 and R2, capacitors C1 and C2, and an operational amplifier OP1, and is a secondary low-pass filter circuit that removes a high-frequency component that does not depend on vibration from the vibration detection signal Vo of the vibration gyro 1.

  The circuit 3 includes resistors R3, R4, R5, R6 and an operational amplifier OP2. The circuit 3 is an addition amplification circuit that adds the output signal Vda0 of the D / A converter 7a, the output signal Vda1 of the D / A converter 7b, and the output signal of the circuit 2, and inverts and amplifies the signal with an appropriate gain. The circuit 3 outputs an operation output signal Vout obtained by performing a predetermined operation to the MCU 5. The circuit 3 can arbitrarily set the addition ratio and gain of the output signals Vda0, Vda1 and the output signal of the circuit 2 by appropriately setting the values of the resistors R3, R4, R5, and R6. The values of the resistors R3, R4, R5, and R6 are determined from the characteristics of the D / A converters 7a and 7b, the required output dynamic range, the resolution, the sensitivity of the vibration gyro 1, and the like. For example, when the vibration detection signal Vo of the vibration gyro 1 is sufficiently sensitive and it is not necessary to obtain a gain by the circuit 3, the resistance values of the resistors R3, R4, R5, and R6 are all set to the same value, and the circuit 3 is It can be operated as a simple adder.

  The power supply circuit 4 supplies a stable power supply of about 5 V to the vibration gyro 1 and the circuits 2 and 3 through the power supply line Vdd. The power supply circuit 4 supplies a more stable reference voltage Vref2 (for example, about 4V to 5V) as a reference voltage regulator for the D / A converters 7a and 7b and a reference power supply for the A / D converter 5a built in the MCU 5. 6 from the power supply line Vdd.

  The output signal generator 7 includes D / A converters 7a and 7b. The D / A converter 7a generates an output signal (level shift signal) Vda0 that shifts the level of the operation output signal Vout based on the operation signal S0 from the operation signal generator 5b. The D / A converter 7b generates an output signal (level shift signal) for shifting the level of the operation output signal Vout based on the operation signal S1 from the operation signal generator 5b. The D / A converters 7a and 7b each include output signal level variable units 70a and 70b, and output arbitrary analog voltages from 0 V to the reference voltage Vref2 with reference to the reference voltage Vref2.

  The MCU 5 includes an A / D converter 5a, an operation signal generation unit 5b, a correction unit 5c, and a control signal generation unit 5d. The MCU 5 outputs the operation output signal Vout of the circuit 3 based on the reference voltage Vref2. / D conversion to recognize vibration generated in the device. The MCU 5 controls the operation of the power supply circuit 4 based on the control signal PC generated by the control signal generator 5d.

Next, focusing on the operation of the MCU 5, the operation of the vibration detection device according to the first embodiment of the present invention is the operation when the power is turned on and the operation when the vibration exceeding the output range is applied. This will be explained separately.
(Operation when the power is turned on)
FIG. 2 is a flowchart for explaining the coarse adjustment operation when the power is supplied to the vibration detecting apparatus according to the first embodiment of the present invention. FIG. 3 is a flowchart for explaining a fine adjustment operation when power is turned on to the vibration detecting apparatus according to the first embodiment of the present invention. FIG. 4 is a timing chart when the power is supplied to the vibration detection apparatus according to the first embodiment of the present invention. Note that FIG. 2 is an operation extracted from a program incorporated in the MCU 5 when the power is supplied to the vibration detection apparatus. Hereinafter, a case where an 8-bit D / A converter is used as the D / A converters 7a and 7b will be described as an example.

  In S3200, the MCU 5 starts processing when the vibration gyro 1 is turned on. At this time, the power supply circuit 4 is not operating, and the output signals Vda0 and Vda1 of the output signal generator 7 are 0V.

  In S3201, the MCU 5 turns on the power supply circuit 4. At t31, the MCU 5 instructs the control signal generator 5d to generate a PC signal, the PC signal becomes High, and the power supply circuit 4 is turned on. As a result, power is supplied to the vibrating gyroscope 1, the circuits 2 and 3, and the constant voltage regulator 6 through the power supply line Vdd.

  In S3202, the MCU 5 waits for a time T11 until the power supply line Vdd is stabilized.

  In S3203, the MCU 5 operates the output signal generation unit 7, outputs the output signal V00 from the D / A converter 7a, and outputs the output signal V10 from the D / A converter 7b. The MCU 5 instructs the operation signal generator 5b to generate the operation signals S0 and S1 at t32. The output signal level varying unit 70a calculates the voltage V00 by the following equation 1 based on the operation signal S0.

  On the other hand, the output signal level variable unit 70b calculates the voltage V10 by the following formula 2 based on the operation signal S1.

  The circuit 3 calculates a calculation output signal Vout based on the output signal Vda0 (voltage V00), the output signal Vda1 (voltage V10), and the vibration detection signal Vo.

  In S3204, the MCU 5 waits until the vibration detection signal Vo of the vibration gyro 1 is stabilized. The MCU 5 waits for a time T12 when the calculation output signal Vout is stabilized.

  In step S3205, the MCU 5 sets a variable n to be used later to zero, and in step S3206, increments the variable n by +1 (adds the variable n by +1).

  In S3207, the MCU 5 monitors the calculation output signal Vout. The MCU 5 quantizes the operation output signal Vout into a digital value by the A / D converter 5a at t33.

  In S3208, the MCU 5 determines whether or not the monitor value of the calculation output signal Vout is greater than 2.0V. If the monitor value is greater than 2.0V, the process proceeds to S3209, where the monitor value is greater than 2.0V. If not, the process proceeds to S3210. The MCU 5 determines whether the operation output signal Vout is above or below the reference voltage Vref (2.0 V) to be adjusted.

  In S3209, the MCU 5 operates the output signal generation unit 7 and outputs the voltage V0n calculated by the following Equation 3 from the D / A converter 7a.

The MCU 5 instructs the operation signal generator 5b to generate the operation signal S0. Based on the operation signal S0, the output signal level varying unit 70a outputs the voltage V0n based on Equation 3 as the output signal Vda0. The circuit 3 adds the output signals Vda0 and Vda1 and the output signal of the circuit 2 based on the reference voltage Vref1 according to the ratio determined by the resistance values of the resistors R3, R4, R5, and R6, and outputs an arithmetic output signal Vout. Note that V0 _n−1 in Equation 3 corresponds to the output voltage of the D / A converter 7a immediately before performing this calculation. For example, the voltage V0 _n−1 when n = ₁ is defined by Equation _1. V00.

  In S3210, the MCU 5 operates the output signal generation unit 7 and outputs the voltage V0n calculated by the following equation 4 from the D / A converter 7a.

The MCU 5 instructs the operation signal generator 5b to generate the operation signal S0. Based on the operation signal S0, the output signal level variable unit 70a outputs the voltage V0n based on Equation 4 as the output signal Vda0, and the circuit 3 outputs the calculation output signal Vout, as in the processing in S3209. Note that V0 _n−1 in Equation 4 corresponds to the output voltage of the D / A converter 7a immediately before performing this calculation. For example, the voltage V0 _n−1 when n = ₁ is defined by Equation _1. V00.

  In S3211, the MCU 5 waits until the output signal Vda0 and the calculation output signal Vout are stabilized.

  In S3212, the MCU 5 determines whether or not the variable n is 7. When the variable n is less than 7, the process returns to S3206. When the variable n becomes 7 at t34, the process proceeds to S3213. The MCU 5 repeats the processing after S3206 until the variable n becomes 7, and roughly adjusts the voltage value of the operation output signal Vout to the reference voltage Vref (2.0 V) to be adjusted.

  In S3213, the MCU 5 sets a variable m to be used later to zero, and in S3214, increments the variable m by +1 (adds the variable m by +1).

  In S3215, the MCU 5 monitors the calculation output signal Vout. The MCU 5 quantizes the operation output signal Vout into a digital value by the A / D converter 5a.

  In S3216, the MCU 5 determines whether or not the monitor value of the calculation output signal Vout is greater than 2.0V. If the monitor value is greater than 2.0V, the process proceeds to S3217, where the monitor value is greater than 2.0V. If not, the process proceeds to S3218. The MCU 5 determines whether the operation output signal Vout is above or below the reference voltage Vref (2.0 V) to be adjusted.

  In S3217, the MCU 5 operates the output signal generation unit 7 and outputs the voltage V1m calculated by the following equation 5 from the D / A converter 7b.

The MCU 5 instructs the operation signal generator 5b to generate the operation signal S1. Based on the operation signal S1, the output signal level variable unit 70b outputs the voltage V1m based on Equation 5 as the output signal Vda1. The circuit 3 adds the output signals Vda0 and Vda1 and the output signal of the circuit 2 based on the reference voltage Vref1 according to the ratio determined by the resistance values of the resistors R3, R4, R5, and R6, and outputs an arithmetic output signal Vout. Note that V1 _m−1 in Expression 5 corresponds to the output voltage of the D / A converter 7b immediately before performing this calculation. For example, the voltage V1 _{m−1 in} the case of m = ₁ is defined by Expression 2. V10.

  In S3218, the MCU 5 operates the output signal generation unit 7 and outputs the voltage V1m calculated by the following Equation 6 from the D / A converter 7b.

The MCU 5 instructs the operation signal generator 5b to generate the operation signal S1. Based on the operation signal S1, the output signal level variable unit 70b outputs the voltage V1m based on Equation 6 as the output signal Vda1, and the circuit 3 outputs the calculation output signal Vout, similarly to the processing in S3217. Note that V0 _m−1 in Equation 6 corresponds to the output voltage of the D / A converter 7b immediately before performing this calculation. For example, the voltage V1 _{m−1 in} the case of m = ₁ is defined by Equation 2. V10.

  In S3219, the MCU 5 waits until the output signal Vda1 and the calculation output signal Vout are stabilized.

  In S3220, the MCU 5 determines whether or not the variable m is 7. When the variable m is less than 7, the process returns to S3214. When the variable m becomes 7 at t35, a series of processing ends in S3221. The MCU 5 repeats the processing after S3214 until the variable m becomes 7, and finely adjusts the voltage value of the operation output signal Vout to the reference voltage Vref (2.0 V) to be adjusted. Note that the MCU 5 adjusts the calculation output signal Vout in t33 to t35 in a time short enough to be ignored with respect to the frequency of the vibration to be detected.

  In addition, MCU5 performs the process of S3250-S3221 as initial adjustment operation mentioned later.

As described above, the vibration detection device according to the first embodiment of the present invention has the effects described below.
(1) The vibration detection signal Vo and the output of the circuit 2 are the reference voltage of the circuit 3 due to output fluctuation when the vibration gyro 1 is turned on, variation in output of each vibration gyro 1 at rest and output fluctuation due to usage environment, etc. A large voltage difference is generated with respect to Vref1. This voltage difference is output as the operation output signal Vout at an amplification factor determined by the resistors R3 and R6, and is not always output as a fixed voltage, but the operation output signal Vout is saturated beyond the output range of the operation amplifier OP2. Resulting in.

  In the first embodiment of the present invention, the output of the circuit 2 and the output signals Vda0 and Vda1 of the D / A converters 7a and 7b are added by the circuit 3, and an arithmetic output signal Vout is output. Here, when the resistance R4 is set to be smaller than the resistance R5, the voltage level of the calculation output signal Vout is monitored by the MCU 5 by the operation of S3200 to S3212, and the output signal Vda0 of the D / A converter 7a is The voltage level is variably controlled. As a result, the calculation output signal Vout can be roughly adjusted (coarsely adjusted) at or near the predetermined voltage 2.0 V to be adjusted.

  (2) The MCU 5 monitors the voltage level of the calculation output signal Vout by the operations of S3213 to S3221, and variably controls the output signal Vda1 of the D / A converter 7b. For this reason, the calculation output signal Vout can be adjusted (finely adjusted) with high accuracy at or near the predetermined voltage 2.0 V to be adjusted. As a result, the output fluctuation of the vibration detection signal Vo output from the vibration gyro 1 when the power is turned on, the dispersion of the output of each vibration gyro at rest, and the output change due to the use environment are accurately adjusted to the reference voltage Vref (2.0 V). can do.

  For example, when an 8-bit resolution D / A converter is used for the D / A converters 7a and 7b, and the ratio of the resistance values of the resistors R4 and R5 is set to 1: 256, the MCU 5 outputs the voltage of the operation output signal Vout. Coarse the level to 2.0V. Furthermore, the MCU 5 can finely adjust (finely adjust) the voltage level of the calculation output signal Vout to 2.0 V with a finer resolution of 1/256. The first embodiment of the present invention uses an 8-bit D / A converter that is available at a relatively low cost without using the high-resolution D / A converters 7a and 7b. The voltage level can be adjusted with high accuracy.

  (3) Since the vibration detection device according to the first embodiment of the present invention does not use a high-pass filter, the problem caused by the time constant of the high-pass filter in the conventional vibration detection device can be solved.

(Operation when vibration exceeding the output range is applied)
FIG. 5 is a flowchart for explaining an operation when a vibration exceeding the output range is applied to the vibration detecting apparatus according to the first embodiment of the present invention. FIG. 6 is a timing chart when the vibration exceeding the output range is applied to the vibration detecting apparatus according to the first embodiment of the present invention. Note that FIG. 5 is an operation extracted from a program incorporated in the MCU 5 when the power is supplied to the vibration detection apparatus.

  In S3300, the MCU 5 starts vibration detection interrupt processing (interval interrupt) 1. The MCU 5 finishes the operation when the power is turned on at this point, and instructs the control signal generator 5d to output the control signal PC. The power supply circuit 4 supplies power to the vibration gyro 1 and the circuits 2 and 3, and the MCU 5 adjusts the calculation output signal Vout to a predetermined voltage of 2.0 V, and the vibration is generated in a state where the calculation output signal Vout is stable. The detection interrupt process 1 is started. The vibration detection interrupt process 1 is an interval interrupt process performed at an interval of 1 ms, for example, using a built-in timer function. The MCU 5 sets an offset value Voffset described later to zero in advance as an initial value.

  In S3301, the MCU 5 monitors the calculation output signal Vout, digitizes the calculation output signal Vout by the built-in A / D converter 5a, and sets the monitoring result of the calculation output signal Vout to the monitor value V1.

  In S3302, the MCU 5 determines whether or not the monitor value V1 is within the range from the level L to the level H. When the monitor value V1 is within the range from the level L to the level H, the process proceeds to S3307, and the MCU 5 sets the monitor value V1 to the monitor value V2. When the monitor value V1 is not within the range from the level L to the level H, the process proceeds to S3303.

  In S3303, the MCU 5 operates the output signal generation unit 7 to change the output signal Vda1 by a predetermined voltage + C or a predetermined voltage −C ′. The MCU 5 changes the output signal Vda1 by + C when the monitor value V1 is higher than the level H, and changes the output signal Vda1 by −C ′ when the monitor value V1 is lower than the level L. As shown in FIG. 6, the MCU 5 exceeds the value immediately before the operation output signal Vout is saturated (the level H set somewhat lower than the saturation level (the level L set slightly higher than the saturation level)). At t41 (t43), the operation signal generator 5b is instructed to generate the operation signal S1. Based on this operation signal S1, when the monitor value V1 is equal to or higher than the level H, the D / A converter 7b adds a voltage Vda1 obtained by adding a predetermined voltage C (C is a positive number) to the current output signal Vda1. To the output signal level variable unit 70b. When the monitor value V1 is equal to or lower than the level L, the D / A converter 7b changes the voltage to the voltage Vda1 obtained by subtracting a predetermined voltage C ′ (C ′ is a positive number) from the current output signal Vda1. The output signal level variable unit 70b is instructed. The output signal Vda1 is input to the negative side of the operational amplifier OP2 through the resistor R5. The circuit 3 adds the output of the circuit 2 based on the vibration detection signal Vo and the output signals Vda0 and Vda1 based on the reference voltage Vref1 based on the ratio determined by the resistance values of the resistors R3, R4, R5, and R6. As a result, the operation output signal Vout is pulled back to a predetermined voltage level of 2.0 V or in the vicinity thereof.

  In S3304, the MCU 5 waits until the output signal Vda1 and the calculation output signal Vout are stabilized. The MCU 5 waits until the output signal Vda1 and the operation output signal Vout that changes with the change of the output signal Vda1 are stabilized.

  In S3305, the MCU 5 monitors the calculation output signal Vout and sets the calculation output signal Vout to the monitor value V2.

  In S3306, the MCU 5 adds the current offset value Voffset to the change amount V1-V2 between the monitor value V1 and the monitor value V2, and sets the offset value Voffset again. The MCU 5 monitors the voltage K (M) of the calculation output signal Vout immediately before the D / A converter 7b operates and the voltage L (N) of the calculation output signal Vout immediately after the D / A converter 7b operates. To do. The MCU 5 calculates the voltage difference KL (MN), adds the change amount KL (MN) to the current offset value Voffset, and calculates the offset value Voffset again.

  In S3308, the MCU 5 adds the monitor value V2 to the newly calculated offset value Voffset to obtain a corrected calculation output signal Vout ′. The correction unit 5c connects the calculation output signals Vout from t41 (t43) to t42 (t44) to calculate a correction calculation output signal Vout ′. In step S <b> 3309, the MCU 5 ends the vibration detection interrupt process 1. In the above description, the operation when the calculation output signal Vout falls below the level M is described with parentheses.

As described above, the vibration detection device according to the first embodiment of the present invention has the effects described below.
(1) As shown in FIG. 6, the MCU 5 operates the D / A converter 7b when the calculation output signal Vout exceeds the K point at t41 or when the calculation output signal Vout falls below the M point at t43. is doing. As a result, the operation output signal Vout is pulled back to the reference voltage Vref (2.0 V) side.

  (2) The calculation output signal Vout is pulled back to the reference voltage Vref (2.0 V) side at t41. However, when a larger vibration is applied, the upper or lower output dynamic range is again exceeded a plurality of times. there is a possibility. In this case, by repeating the operation at t41 or t43, it is possible to detect a large vibration several times or more than the conventional vibration detection device.

  (3) The MCU 5 has a monitor value (voltage value) V1 immediately before the operation of the D / A converter 7b (K point at t41 or M point at t43) and immediately after the operation (L point at t42 or N point at t44). The amount of voltage change (voltage difference) V1-V2 is calculated from the monitor value (voltage value) V2. Then, the MCU 5 connects the calculation output signals Vout based on the voltage difference V1−V2, and calculates the corrected calculation output signal Vout ′. As a result, in the conventional vibration detection device, vibration that greatly exceeds the output dynamic range can be detected almost in real time by calculating the correction calculation output signal Vout ′. Further, the vibration detection resolution and S / N of the correction calculation output signal Vout ′ can be maintained. Further, since the dynamic range of the detectable vibration is expanded, the amplification factor of the circuit 3 shown in FIG. 1 is increased, and the detection resolution and S / N are improved.

  (4) The change amount V1-V2 of the calculation output signal Vout is naturally determined if the characteristics of the D / A converter 7b, the resistance values of the resistors R5 and R6, and the voltage value of the reference voltage Vref2 are known. The voltage at point L (point N) can be obtained without monitoring the voltage value at time t42 (t44) shown in FIG. 6 from the voltage change amount C (−C ′) and the potential at point K (point M) of the output signal Vda1. Can be determined. On the contrary, since the accurate potential at the K point (M point) is also determined from the potential at the L point (N point), the processing can be facilitated accordingly. The MCU 5 can calculate the change amount V1-V2 of the calculation output signal Vout by the following equations 7 and 8, based on the voltage change amounts C, -C 'of the output signal Vda1 and the resistors R5, R6.

  The MCU 5 can perform the operations of S3306 and S3308 based on the calculation results of Equations 7 and 8.

  (5) In the first embodiment of the present invention, as shown in FIG. 1, the reference power supplies of the A / D converter 5a and the D / A converter 7b are set to the same reference voltage Vref2. When the ratio of the resistors R5 and R6 is constant and the D / A converter 7b changes the output signal Vda1 by a predetermined digital value, for example, 1LSB, the digital value that the A / D converter 5a performs A / D conversion. The amount of change is always constant regardless of the fluctuation of the reference voltage Vref2. Therefore, even if the reference voltage Vref2 varies or changes with time in each vibration detection device, as long as the D / A converter 7b is operated by the same quantization amount, the A with respect to the change amount of the calculation output signal Vout The amount of change in the / D conversion value can always be kept constant. As a result, the change in the reference voltage Vref2 does not affect the calculated value of the change amount V1-V2 shown in Equation 7 and Equation 8, and no error occurs in the correction operation output signal Vout ′.

(Second Embodiment)
(Operation when vibration exceeding the output range is applied)
FIG. 7 is a flowchart for explaining the operation when a vibration exceeding the output range is applied to the vibration detecting apparatus according to the second embodiment of the present invention. FIG. 8 is a timing chart for explaining the pull back operation and the joining operation in the vibration detecting apparatus according to the second embodiment of the present invention. Note that FIG. 7 is an operation extracted from the program incorporated in the MCU 5 when the power is supplied to the vibration detection apparatus. The pull back operation is an operation in which the MCU 5 operates the output signal generator 67 to pull back the calculation output signal Vout within the predetermined range when the calculation output signal Vout exceeds the predetermined range. Further, the stitching operation refers to an operation of stitching the calculation output signal Vout before the pull back operation and the calculation output signal Vout after the pull back operation.

  The second embodiment of the present invention is another embodiment in which the joining operation is different from that of the first embodiment. Hereinafter, detailed description of steps that are the same as or substantially the same as those shown in FIG. 5 will be omitted.

  In S3400, the MCU 5 starts vibration detection interrupt processing (interval interrupt) 2.

  In S3401, the MCU 5 monitors the calculation output signal Vout and sets the monitor result to the quantized value V (t).

  In step S3402, the MCU 5 determines whether or not the output signal generation unit 7 has been operated during the previous sampling. In the vibration detection interrupt process 2 performed 1 ms before the current time, the MCU 5 operates the output signal generation unit 7 by the operation signal generation unit 5b and determines whether or not the output signal Vda1 of the D / A converter 7b is changed. to decide. When the output signal generator 7 is operated at the previous sampling, the process proceeds to S3403. When the output signal generator 7 is not operated at the previous sampling, the process proceeds to S3404.

  In S3403, the MCU 5 updates the Voffset value. The MCU 5 sets the offset value Voffset again by the following equation (9).

Here, the sampling interval t _s, as shown in FIG. 8 is a specified interval for performing vibration detection interrupt process 2, the time t is the current sampling time, the time t-t _s is the last sample time , and the time t-2t _s is a sampling time of the last but one. The quantization value V (t-2t _s) is an arithmetic data corresponding to the operation output signal Vout at time t-2t _s, quantization value V _{(t-t s)} is at time _{t-t s} The calculation data corresponds to the calculation output signal Vout, and the quantized value V (t) is calculation data corresponding to the calculation output signal Vout at time t.

  In S3404, the correction unit 5c calculates the correction output signal Vout ′ (t). The correction unit 5c calculates the correction output signal Vout ′ (t) by the following formula 10.

  In S3405, the MCU 5 determines whether or not the quantized value V (t) is within the range from the level L to the level H. When the quantized value V (t) is within the range from the level L to the level H, the process proceeds to S3407, and the vibration detection interrupt process 2 is terminated. If there is no quantized value V (t) in the range from level L to level H, the process proceeds to S3406.

  In S3406, the MCU 5 operates the output signal generator 7 to change the output signal Vda1 by the predetermined voltage + C or the predetermined voltage −C ′. The MCU 5 changes the output signal Vda1 by a predetermined voltage + C when the quantized value V (t) is equal to or higher than the level H, and outputs the output signal Vda1 when the quantized value V (t) is equal to or lower than the level L. Change by -C '. In step S3407, the MCU 5 ends the vibration detection interrupt process 2.

MCU5, as shown in FIG. 8, at sampling time t-t _s of the operation output signal Vout exceeds the immediately preceding (level H which is set somewhat lower than the saturation level) is saturated, the operation signal generating unit 5b The generation of the operation signal S1 is instructed. Based on the operation signal S1, the D / A converter 7b adds a predetermined voltage C (C is a positive number) to the current output signal Vda1 when the quantized value V (t) is equal to or higher than the level H. The output signal level variable unit 70b is instructed to change to the voltage Vda1. When the quantized value V (t) is equal to or lower than the level L, the D / A converter 7b subtracts a predetermined voltage C ′ (C ′ is a positive number) from the current output signal Vda1. To the output signal level variable unit 70b.

The output signal Vda1 is input to the negative side of the operational amplifier OP2 through the resistor R5. The circuit 3 adds the output of the circuit 2 based on the vibration detection signal Vo and the output signals Vda0 and Vda1 based on the reference voltage Vref1 based on the ratio determined by the resistance values of the resistors R3, R4, R5, and R6. As a result, the voltage level of the calculation output signal Vout is pulled back inside the dynamic range of the calculation output signal Vout. Further, the correction unit 5c performs a pull back operation based on the next quantized value V (t), the previous quantized value V (t−t _s ), and the previous quantized value V (t−2t _s ). during taking into account the variation of the operation output signal Vout (time _{t-t s} ~ time t), it is possible to piece together operation output signal Vout becomes discontinuous. FIG. 8 shows an example in which the calculation output signal Vout is about to exceed the upper side of the dynamic range, but the pull back operation is also performed when the calculation output signal Vout is about to exceed the lower side of the dynamic range. The stitching operation can be performed in the same manner.

  As described above, the vibration detection device according to the second embodiment of the present invention has the following effects in addition to the effects of the first embodiment. In S3304, the MCU 5 operates the output signal generator 7, and the D / A converter 7b generates the output signal Vda1. Here, waiting times (t41 to t42, t43 to t44) until the output signal Vda1 and the calculation output signal Vout are stabilized are wasted. This waiting time depends on the response characteristic of the D / A converter 7b, the ratio of the resistors R5 and R6, and the response characteristic of the operational amplifier OP2. Depending on the selection of these elements, a time that cannot be ignored, for example, about 100 μs. It may become.

In this waiting time, when a rapidly changing vibration waveform is applied to the vibration detection device, the calculation output signal Vout changes greatly. As a result, the signal change amount during this waiting time is an error in the corrected calculation output signal V′out which is a waveform obtained by pulling back the calculation output signal Vout and connecting the K point and the L point or the M point and the N point. May occur. Quantization value _{V (t-2t s),} V (t-t s), V (t), ··· are discrete operation data by the A / D converter 65a, the sampling interval _{t s} is long This error increases.

  On the other hand, when the characteristics of the D / A converter 7b, the resistance values of the resistors R5 and R6, and the voltage value of the reference voltage Vref2 are known, the change amount V1-V2 is calculated by the equations 7 and 8, and the waiting time in S3304 is also calculated. It becomes unnecessary. However, it is difficult to calculate the variation V1-V2 with high accuracy due to variations in the resistance values of the resistors R5 and R6, the voltage values of the D / A converter 7b and the reference voltage Vref2, and the like. Furthermore, using a high-performance element that is not affected by variations in the resistance values of the resistors R5 and R6, the voltage values of the D / A converter 7b and the reference voltage Vref2, etc. leads to an increase in cost.

In the second embodiment of the present invention, the Voffset value is calculated by the correction unit 65c using Equation 9, and the correction calculation output signal Vout ′ (t) is calculated using Equation 10. For this reason, the correction calculation output signal Vout ′ (t) at time t includes the quantization value V (t−2t _s ) two times before the pull back operation and the quantization value V (t−t) one time before. _s ) and can be approximated as being on a straight line passing through. As a result, MCU 5 is repeated sampling interval t _s vibration detection interrupt process every two, can be detected substantially in real time vibration generated in the vibration detecting device. Further, as in S3304 shown in FIG. 5, it is not necessary to provide a waiting time until the output signal Vda1 and the calculation output signal Vout are stabilized, and the error of the correction calculation output signal Vout ′ (t) caused by the pull back operation is reduced. To do.

(Third embodiment)
FIG. 9 is a diagram showing a vibration detection circuit in the vibration detection apparatus according to the third embodiment of the present invention. In the following description, the same circuit as the circuit shown in FIG. 42 is described with a corresponding reference numeral, and detailed description thereof is omitted.

  The vibration detection circuit according to the third embodiment of the present invention has the same circuit arrangement as the conventional vibration detection circuit shown in FIG. The MCU 15 in the third embodiment of the present invention determines whether or not the arithmetic output signal Vout from the amplifier circuit 13 is within a predetermined range, and an A / D converter 15a that digitizes the arithmetic output signal Vout; , An operation signal generation unit 15b that generates the operation signal SSW, a correction unit 15c that corrects the calculation output signal Vout to a correction calculation output signal Vout ′, and a control signal generation unit 15d that generates the control signal PC.

(Operation when vibration exceeding the output range is applied)
Next, the operation of the vibration detection apparatus according to the third embodiment of the present invention will be described focusing on the operation of the MCU 15. FIG. 10 is a flowchart for explaining the operation when a vibration exceeding the output range is applied to the vibration detecting apparatus according to the third embodiment of the present invention. FIG. 10 shows the operation when the vibration exceeding the output range is applied to the vibration detection device, extracted from the program incorporated in the MCU 15. In the following, steps that are the same as or substantially the same as the steps shown in FIG. 7 are described with corresponding numbers, and detailed descriptions of those steps are omitted.

  In S3500, the MCU 15 starts vibration detection interrupt processing (interval interrupt) 3.

  In S3501, the MCU 15 monitors the calculation output signal Vout and sets the calculation output signal Vout to the quantized value V (t).

  In S3502, the MCU 15 determines whether or not the analog switch SW10 is turned on at the previous sampling. In the vibration detection interrupt process 3 performed 1 ms before the current time, the MCU 15 generates an operation signal SSW by the operation signal generation unit 15b and determines whether the analog switch SW10 is turned on. When the analog switch SW10 is turned on at the previous sampling, the process proceeds to S3504. When the analog switch SW10 is not turned on at the previous sampling, the process proceeds to S3503.

  In S3503, the MCU 15 updates the Voffset value. The MCU 15 sets the offset value Voffset again by Equation 9.

  In S3504, the correction unit 15c calculates the correction output signal Vout ′ (t). The correcting unit 15c calculates the corrected output signal Vout ′ (t) by Equation 10.

  In S3505, the MCU 15 determines whether or not the quantized value V (t) is within the range from the level L to the level H. When the quantized value V (t) is within the range from the level L to the level H, the process proceeds to S3507, and the vibration detection interrupt process 3 is terminated. When there is no quantized value V (t) in the range from level L to level H, the process proceeds to S3506.

In S3506, the MCU 15 turns on the analog switch SW10 for a predetermined time. MCU15, as shown in FIG. 8, at time t-t _s of the operation output signal Vout exceeds the immediately preceding (level H which is set somewhat lower than the saturation level) is saturated, the operation on the operation signal generating unit 15b Instructs generation of signal SSW. Operation signal SSW, the time _{t-t s} ~ Time High next at t, the analog switch SW10 is kept on operation at time _{t-t s} ~ time t. As a result, a part of the output signal from the circuit 12 is input to the negative side of the operational amplifier OP12 through the analog switch SW10 and the resistors R15 and R16. The calculation output signal Vout is pulled back to the center side (0V side shown in FIG. 9) of the dynamic range, and initialization processing is performed. In step S3507, the MCU 15 ends the vibration detection interrupt process 3.

  As described above, the vibration detection device according to the third embodiment of the present invention has the same effect as the vibration detection device according to the second embodiment.

(Fourth embodiment)
FIG. 11 is a diagram illustrating a part of the vibration detection circuit in the vibration detection apparatus according to the fourth embodiment of the present invention. Unlike the first to third embodiments, the vibration detection device according to the fourth embodiment of the present invention is another embodiment using a piezoresistive acceleration sensor. The vibration gyros 1 and 11 shown in FIGS. 1 and 9 are angular velocity sensors that detect angular velocity due to vibration, but an acceleration sensor can also be used as an element that detects vibration. Hereinafter, an example in which an acceleration sensor is used for the vibration detection device will be described. Note that the same circuits as those shown in FIGS. 1 and 9 are denoted by the corresponding numbers, and detailed description thereof is omitted.

  The vibration detection unit 21 is a piezoresistive acceleration sensor. The vibration detection unit 21 includes a resistance bridge composed of four resistors. The terminals P1 and P4 of the resistance bridge are maintained at constant voltages + VB and −VB, respectively, by a known technique. In the vibration detector 21, the balance of the resistance values of the four resistors changes according to the applied acceleration, and a potential difference is generated between the terminal P2 and the terminal P3. The vibration detection unit 21 outputs a vibration detection signal corresponding to the detected acceleration to the circuit 22.

  The circuit 22 is a circuit that differentially amplifies the vibration detection signals output from the terminals P2 and P3 of the vibration detection unit 21. The circuit 22 is a known instrumentation amplifier, and includes operational amplifiers OP21, OP22, OP23 and resistors R21, R22, R23, R24, R25, R26, R27. The circuit 22 generates a potential difference between the terminal P2 and the terminal P3 in proportion to the acceleration applied to the vibration detection unit 21, and generates an output signal proportional to the potential difference.

  The circuit 23 includes an operational amplifier OP24 and resistors R28, R29, R30, R31. The circuit 23 adds the output signal of the circuit 22 and the output signals Vda0, Vda1 with an addition ratio and an amplification ratio determined by the ratio of the resistance values of the resistors R28, R29, R30, R31, and accelerates the acceleration caused by the vibration. A signal (calculation output signal) Vout is output.

〔camera〕
(Fifth embodiment)
Hereinafter, an example in which the vibration detection device according to the first to fourth embodiments of the present invention is applied to a camera will be described with reference to the drawings. FIG. 12 is a block diagram showing a camera according to the fifth embodiment of the present invention. In the fifth embodiment of the present invention, when the vibration detection apparatus according to the first to fourth embodiments of the present invention is applied to a camera, a power-on operation, an initial adjustment operation, a pull-back operation, and a joining operation are performed. It is embodiment regarding the timing which performs.

  The camera 30 is a photographing device such as a video movie, an electronic still camera, or a silver salt camera. The camera 30 includes a release button 31 that is operated by a user and starts a shooting preparation operation and a shooting operation, a main button 32 that starts the camera, and a zoom button 33 that starts a zoom-up operation and a zoom-down operation. . The camera 30 includes an MCU 35, a vibration detection circuit 36, an exposure circuit 37, a zoom drive circuit 38, a zoom drive mechanism unit 39, and a half-push switch SW11 that detects a half-push operation of the release button 31. A full-press switch SW12 for detecting the full-pressing movement of the release button 31, a main switch SW13 for detecting the on-operation of the main button 32, a zoom-up switch SW14 for detecting the on-operation of the zoom button 33 at the time of zooming up, And a zoom down switch SW15 for detecting an on operation of the zoom button 33 during zoom down.

  The MCU 35 corresponds to the MCUs 5 and 15 shown in FIGS. 1 and 9, and includes A / D converters 5a and 15a, operation signal generation units 5b and 15b, correction units 5c and 15c, control signal generation units 5d and 15d, and the like. . A vibration detection circuit 36, an exposure circuit 37, and a zoom drive circuit 38 are connected to the MCU 35. Further, the MCU 35 is connected to the input port of a half-press switch SW11, a full-press switch SW12, a main switch SW13, a zoom-up switch SW14, and a zoom-down switch SW15. Enter. The MCU 35 has a built-in pull-up resistor. When each switch is turned off, the signal level is High. When each switch is turned on, the signal level is Low. The MCU 35 recognizes the operation of each button by the user when the ON signal of each switch is input. In the following, for the circuits and signals other than the MCU 35, the names and symbols in FIGS. 1 and 9 are used as they are.

  The vibration detection circuit 36 is a circuit for detecting vibration generated in the camera 30. The vibration detection circuit 36 corresponds to all circuits other than the MCUs 5 and 15 shown in FIGS. 1, 9, and 11, and the vibration gyros 1 and 11, the vibration detection unit 21, the circuits 2, 12, 22, and the circuits 3 and 13. , 23 and power supply circuits 4, 14 and the like.

  The exposure circuit 37 takes an image of a subject image from a photographic lens (not shown) on a silver salt film (not shown) or an image pickup device such as a charge transfer element (hereinafter referred to as a CCD) for electrical imaging. A circuit for obtaining a signal. The exposure circuit 37 is controlled by the MCU 35. The exposure circuit 37 is composed of a mechanical shutter and its electronic control circuit for a silver halide camera and some electronic still cameras. The exposure circuit 37 includes a CCD and an electronic shutter circuit that controls the charge accumulation time and the like for general electronic still cameras and video movies.

  The zoom drive circuit 38 is a circuit for operating the zoom drive mechanism unit 39. The zoom drive circuit 38 is controlled by the MCU 35.

  The zoom drive mechanism unit 39 drives the zoom lens 40 constituting at least a part of the photographing optical system in the direction of the optical axis I to continuously change the focal length. The zoom drive mechanism unit 39 is connected to the zoom drive circuit 38. The zoom drive mechanism unit 39 drives the zoom lens 40 according to the operation of the zoom button 33 by the user. When the zoom up switch SW14 is turned on, the zoom drive mechanism unit 39 zooms up the focal length to the long focus side, and when the zoom down switch SW15 is turned on, the zoom drive mechanism unit 39 zooms down the focal length to the short focus side.

  Next, the operation of the camera according to the fifth embodiment of the present invention will be described. FIG. 13 is a flowchart for explaining the operation when vibration exceeding the output range is applied to the camera according to the fifth embodiment of the present invention.

  FIG. 13 shows the operation when the power is supplied to the vibration detection apparatus extracted from a program incorporated in the MCU 35. The basic operation of the MCU 35 shown in FIG. 13 is substantially the same as the vibration detection interrupt processing 2 shown in FIG. 7, and a part of processing suitable for use in the camera is added. In the flowchart shown in FIG. 13, the processes of S3606 to S3609 are different from the flowchart shown in FIG. Hereinafter, detailed descriptions of S3601 to S3605 that are the same as S3401 to S3405 shown in FIG. 7 will be omitted.

  In S3600, the MCU 35 starts a vibration detection interrupt process (interval interrupt) 4. The MCU 35 is initialized to zero in advance by using an offset value Voffset and a pull-back count Np, which will be described later, as initial values.

  In S3606, the MCU 35 determines whether or not the pull back operation is permitted. The MCU 35 determines whether or not the pull back operation executed in S3610 is permitted. If the pull back operation is permitted, the process proceeds to S3607. On the other hand, when the pull back operation is prohibited, the process proceeds to S3612, the pull back operation in S3610 is prohibited, and the vibration detection interrupt process 4 is terminated.

  In S3607, the MCU 35 determines whether or not the correction calculation output signal Vout ′ (t) is within a predetermined range. The MCU 35 determines whether or not the absolute value of the correction calculation output signal Vout ′ (t) calculated by the pull back operation and the joining operation is equal to or less than a predetermined value. When the absolute value of the correction calculation output signal Vout ′ (t) is equal to or smaller than the predetermined value, the process proceeds to S3608. On the other hand, when the absolute value of the correction calculation output signal Vout ′ (t) is larger than the predetermined value, the process proceeds to S3612 and the pull back operation in S3610 is prohibited.

  In S3608, the MCU 35 determines whether or not the number of pullbacks Np is within a predetermined number. The MCU 35 determines whether or not the absolute value of the number of pullbacks Np is equal to or less than a predetermined value. If the absolute value of the number of pullbacks Np is less than or equal to a predetermined value, the process proceeds to S3609. On the other hand, when the absolute value of the number Np of pullback is larger than a predetermined value, the process proceeds to S3612 and the pullback operation in S3610 is prohibited.

In S3609, the MCU 35 determines whether or not the correction calculation output signal Vout ′ (t) has changed rapidly. MCU35 includes a quantized value V (t) in the current time t as shown in FIG. 8, the absolute value of the change amount between the quantized value V (t-ts) at the previous time _{t-t s} is a predetermined value Judge whether to exceed. When the absolute value of the change amount between the quantized value V (t) and the quantized value V (t−ts) is equal to or smaller than the predetermined value, the MCU 35 proceeds to S3610. On the other hand, when the absolute value of the amount of change between the quantized value V (t) and the quantized value V (t−ts) exceeds a predetermined value, the MCU 35 proceeds to S3612 and the pull back operation in S3610 is prohibited.

  In S3611, the MCU 35 updates the number of pullbacks Np. When the quantized value V (t) is equal to or higher than the level H, the MCU 35 increments the number of pullbacks Np by one. The MCU 35 adds +1 to the current number Np of pullback when the calculation output signal Vout exceeds or exceeds the dynamic range on the predetermined level H side and when the calculation output signal Vout is pulled back inward in S3610. To do. On the other hand, when the quantized value V (t) is equal to or lower than the level L, the MCU 35 decrements the number of pullbacks Np by -1. When the calculation output signal Vout exceeds the dynamic range on the predetermined level L side or just before it exceeds the calculation output signal Vout in S3610, the MCU 35 sets the current number Np of pullback to −1. to add. As a result, the number of retraction operations is calculated as the retraction number Np value.

  In S3612, the MCU 35 ends the vibration detection interrupt process 4. As described above, when the MCU 35 finishes the determinations in S3606 to S3609 and determines that at least one of these determinations does not satisfy the condition, the MCU 35 proceeds to S3612 and ends the vibration detection interrupt process 4. On the other hand, when the MCU 35 finishes the determinations in S3606 to S3609 and determines that all the conditions of these determinations are satisfied, the MCU 35 performs a pull back operation in S3610 and ends the vibration detection interrupt process 4.

  As described above, the camera according to the fifth embodiment of the present invention has the following effects in addition to the effects of the first to fourth embodiments. For example, when a large vibration is suddenly applied to the vibration detection device or camera, such as when the vibration detection device or camera is struck against something or the angle of view of the camera is suddenly changed, the pull back operation and stitching are performed. Errors caused by operation may increase. As shown in FIGS. 7 to 11, the vibration detection devices according to the second to fourth embodiments can reduce errors caused by the pull back operation and the joining operation. However, when the calculation output signal Vout changes abruptly or excessive vibration is applied, this error may become so large that it cannot be ignored. Further, even if the calculation output signal Vout does not change abruptly and one stitching error is very small, this error accumulates and cannot be ignored by performing the pull-back operation and the stitching operation multiple times. There are times when

  The vibration detection apparatus according to the first to third embodiments of the present invention does not cut the DC component from the vibration detection signals output from the vibration gyros 1 and 11 and the acceleration sensor 21. As a result, since the pull back operation and the stitching operation are stopped, even if the calculation output signal Vout is saturated beyond the dynamic range, if the vibration generated in the vibration detection device or the camera is reduced, the calculation output signal Vout is Return to within the dynamic range.

  For this reason, the vibration detection interrupt process 4 shown in FIG. 13 restricts the pull back operation and the joining operation in the following cases. First, when the corrected output signal Vout ′ after the pull back operation and the joining operation is large, second, when the pull back count Np is large, and third, when the operation output signal Vout changes rapidly, the pull back is performed. Since errors caused by the operation and the joining operation may increase, the joining operation and the pull-back operation are prohibited.

(Release button operation and vibration detection operation)
Next, an operation when the release button in the camera according to the fifth embodiment of the present invention is operated by the user will be described. FIG. 14 is a flowchart for explaining the operation when the release button is operated by the user in the camera according to the fifth embodiment of the present invention. FIG. 15 is a timing chart for explaining the operation when the release button is operated by the user in the camera according to the fifth embodiment of the present invention. Note that FIG. 14 is extracted from the program incorporated in the MCU 35 when the user operates the release button 31 shown in FIG.

  In S4100, the MCU 35 starts the camera operation 1.

  In S4101, the MCU 35 determines whether or not the half-press switch SW11 has been turned on. The MCU 35 determines whether or not the half-push switch SW11 is turned on when the release button 31 is half-pressed by the user, and the half-push switch on signal is Low. When the half-press switch SW11 is turned on at t51, the process proceeds to S4102, and when the half-press switch SW11 is not turned on, the determination in S4101 is repeated.

  In S4102, the MCU 35 turns on the vibration detection circuit 36. At t51 shown in FIG. 15, the MCU 35 instructs the control signal generators 5d and 15d to generate the PC signal, the PC signal becomes High, and the power supply circuits 4 and 14 are turned on. As a result, power is supplied to the vibration detection circuit 36 through the power supply line Vdd.

  In S4103, the MCU 35 waits until the power supply line Vdd is stabilized. The MCU 35 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t51 to t52.

  In S4104, the MCU 35 starts an initial adjustment process. The MCU 35 executes the processing of S3250 to S3221 (hereinafter referred to as initial adjustment operation) shown in FIGS. 2 and 3 from t52 to t53. In S3251, the MCU 35 sets (initializes) the offset value Voffset to zero, and in S3252, the MCU 35 sets (initializes) the number of pullbacks Np to zero. In S3253, the MCU 35 operates the output signal generation unit 7, outputs the output signal V00 from the D / A converter 7a, and outputs the output signal V10 from the D / A converter 7b. In S3254, the MCU 35 waits for a time until the output signal Vda0 (voltage V00), the output signal Vda1 (voltage V10), and the operation output signal Vout are stabilized. In S3250 to S3221, the MCU 35 adjusts the calculation output signal Vout to a predetermined voltage (near 2.0 V), and proceeds to S4105 shown in FIG.

  In S4105, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the camera at t53. As a result, the MCU 35 detects vibration generated in the camera almost in real time. Further, when a large vibration exceeding the dynamic range is applied, the correction calculation output signal Vout ′ (t) can be obtained by the pull back operation and the joining operation.

  In S4106, the MCU 35 permits the pull back operation. The MCU 35 permits the pull back operation at t53. As a result, in S3606 shown in FIG. 13, the MCU 35 determines that the pull back operation is permitted.

  In S4107, the MCU 35 determines whether or not the full push switch SW12 is turned on. The MCU 35 determines whether or not the full-press switch SW12 is turned on when the user fully presses the release button 31 and the full-press switch on signal becomes Low. When the full push switch SW12 is turned on at t54, the process proceeds to S4108. When the full push switch SW12 is not turned on, the determination in S4113 is repeated.

  In S4108, the MCU 35 prohibits the pull back operation (joining operation). The MCU 35 prohibits the pull back operation and the joining operation from t54 to t56 in response to the full pressing operation of the release button 31. As a result, in S3606 shown in FIG. 13, the MCU 35 determines that the pull back operation is not permitted (prohibited). The MCU 35 prohibits the pull back operation in S3610 and prohibits the joining operation in S3603 and S3604.

  In S4109, the MCU 35 starts a timer. The MCU 35 has a built-in timer for notifying that a predetermined time has elapsed (time up), for example. The MCU 35 sets a predetermined time from the timer start to the time-up by this timer, and starts the timer.

  In S4110, the MCU 35 starts an exposure process. The exposure circuit 37 starts the exposure operation for the silver salt film or the imaging operation for the image sensor at t54, and the exposure operation or the imaging operation ends at t55. When the MCU 35 sets the timer for the exposure time (t54 to t55) or longer, the MCU 35 prohibits the pull-back operation and the joining operation at least during the exposure operation or the imaging operation. On the other hand, when the timer is set for the exposure time, the MCU 35 prohibits the pull back operation and the joining operation only during the exposure operation or the imaging operation.

  In S4111, the MCU 35 determines whether the time is up. The MCU 35 determines whether the started timer has timed out. If the timer expires at t56, the process proceeds to S4112. When the timer is not up, the MCU 35 continues to make a determination until the time is up.

  In S4112, the MCU 35 permits the pull back operation. The MCU 35 permits the pullback operation prohibited in S4108 at t56.

  In S4113, the MCU 35 determines whether or not the half-press switch SW11 has been turned on. The MCU 35 determines whether or not the half-push switch SW11 is turned on and the half-push switch on signal becomes Low. When the half-press switch SW11 is turned on, the process returns to S4107, and the processes after S4107 are repeated. When the half-press switch SW11 is not turned on, the process proceeds to S4114.

  In S4114, the MCU 35 ends the vibration detection. The MCU 35 prohibits the vibration detection interrupt process 4 at t57.

  In S4115, the MCU 35 turns off the vibration detection circuit 36. At t57, the MCU 35 instructs the control signal generators 5d and 15d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 36 is turned off. As a result, the supply of power to the vibration detection circuit 36 is interrupted. When the process of S4115 ends, the process returns to S4101, and the MCU 35 repeats the processes after S4101.

As described above, the camera according to the fifth embodiment of the present invention has the following effects.
(1) The MCU 35 can turn on the vibration detection circuit 36 in response to the half-pressing operation of the release button 31 to start the initial adjustment operation and the vibration detection, and permit the pull back operation and the joining operation.

  (2) The MCU 35 can start vibration detection during the half-pressing operation of the release button 31 by the user, and permit the pull-back operation and the joining operation.

  (3) The correction calculation output signal Vout ′ (t) joined after the pull back operation has a slight discontinuity in the waveform due to the pull back operation and the join operation. In general, a camera or a video movie equipped with a shake correction device corrects shake during exposure based on a correction calculation output signal Vout ′ (t). For this reason, if a correction operation output signal Vout ′ (t) becomes discontinuous by performing a pull-back operation or a joining operation during exposure, the blur correction operation is affected. The MCU 35 can correct the blur with high accuracy in order to prohibit the pull-back operation and the joining operation at least during the exposure by the processing of S4109 to S4112.

(Zooming operation and vibration detection operation)
Next, an operation when the zoom button in the camera according to the fifth embodiment of the present invention is operated by the user will be described. FIG. 16 is a flowchart for explaining the operation when the zoom button in the camera according to the fifth embodiment of the present invention is operated by the user. FIG. 17 is a timing chart for explaining the operation when the zoom button in the camera according to the fifth embodiment of the present invention is operated by the user. In the following, detailed description of the same steps as those shown in FIG. 14 is omitted.

  In S4200, the MCU 35 starts the camera operation 2.

  In S4201, the MCU 35 determines whether or not the zoom button 33 has been turned on. The MCU 35 determines whether or not the zoom switch SW14 or the zoom switch SW15 is turned on when the user operates the zoom button 33 and the zoom switch on signal becomes Low. As shown in FIG. 17, for example, when the zoom switch SW14 is turned on at t61, the process proceeds to S4202. When the zoom switch SW14 or the zoom switch SW15 is not turned on, the determination in S4201 is repeated.

  In S4202, the MCU 35 turns on the vibration detection circuit 36.

  In S4203, the MCU 35 waits until the power supply line Vdd is stabilized. The MCU 35 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t61 to t62.

  In S4204, the MCU 35 starts an initial adjustment operation. The MCU 35 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t62 to t63.

  In S4205, the MCU 35 prohibits the pull back operation (joining operation). In response to the operation of the zoom button 33, the MCU 35 prohibits the pull back operation and the joining operation from t63 to t64. The MCU 35 determines that the pull back operation is not permitted in S3606 shown in FIG. 13, and prohibits the pull back operation in S3610, and prohibits the stitching operation in S3603 and S3604.

  In S4206, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the camera at t63.

  In S4207, the MCU 35 determines whether or not the zoom is up. The MCU 35 determines whether or not the zoom switch SW14 is turned on and the zoom switch on signal becomes Low. When the zoom switch SW14 is turned on, the process proceeds to S4208. When the zoom switch SW14 is not turned on, the process proceeds to S4209.

  In S4208, the MCU 35 instructs zoom-up driving. The MCU 35 controls the zoom drive circuit 38 based on the ON operation of the zoom switch SW14, and the zoom drive mechanism unit 39 drives the zoom lens 40 to zoom up.

  In step S4209, the MCU 35 instructs zoom-down driving. When the zoom switch SW14 is not turned on (when the zoom switch SW15 is turned on), the MCU 35 controls the zoom drive circuit 38, and the zoom drive mechanism unit 39 drives the zoom lens 40 to zoom down.

  In S4210, the MCU 35 determines whether or not the zoom button 33 is turned off. The MCU 35 determines whether or not the zoom switch SW14 and the zoom switch SW15 are turned off and the zoom switch on signal becomes High. For example, when the zoom switch SW14 is turned off at t64, the process proceeds to S4211. When the zoom switch SW14 and the zoom switch SW15 are not turned off, the process returns to S4207, and the MCU 35 repeats the processes after S4207. As a result, while the zoom button 33 is operated by the user, zoom-up driving or zoom-down driving is continued.

  In step S4211, the MCU 35 instructs the zoom drive to end. The MCU 35 controls the zoom drive circuit 38 based on the OFF operation of the zoom switch SW14 and the zoom switch SW15, and the zoom drive mechanism unit 39 stops the zoom up drive or the zoom down drive of the zoom lens 40.

  In S4212, the MCU 35 starts an initial adjustment operation. The MCU 35 performs an initial adjustment operation from t64 to t65.

  In S4213, the MCU 35 permits the pull back operation. The MCU 35 permits the pull back operation at t65. As a result, the MCU 35 determines that the pull back operation is permitted in S3606 shown in FIG. 13, performs the pull back operation in S3610, and performs the stitching operation in S3603 and S3604.

  In S4214, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the camera at t65.

  In S4215, the MCU 35 starts a timer. The MCU 35 sets a predetermined time from the timer start to the time-up by the built-in timer, and starts the timer.

  In S4216, the MCU 35 determines whether or not the zoom button 33 is turned on. For example, when the zoom switch SW15 is turned on at t66, the process returns to S4204, and the MCU 35 repeats the processes after S4204. As a result, the MCU 35 starts the initial adjustment operation from t66 to t67, prohibits the pull back operation and the joining operation at t67, and starts vibration detection at t67. When the zoom switch SW15 is turned off at t68, the zoom-down drive ends. Then, the MCU 35 starts the initial adjustment operation from t68 to t69, prohibits the pull back operation and the joining operation at t69, and starts vibration detection.

  In S4217, the MCU 35 determines whether or not the time is up. If the timer expires at t70, the process proceeds to S4218. When the timer has not timed up, the process returns to S4216, and the MCU 35 continues to make a determination until the time is up.

  In S4218, the MCU 35 ends the vibration detection. The MCU 35 prohibits the vibration detection interrupt process 4 at t70.

  In S4219, the MCU 35 turns off the vibration detection circuit 36. At t70, the MCU 35 instructs the control signal generators 5d and 15d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 36 is turned off. As a result, the supply of power to the vibration detection circuit 36 is interrupted. When the process of S4219 ends, the process returns to S4201, and the MCU 35 repeats the processes after S4201.

As described above, the camera according to the fifth embodiment of the present invention has the following effects.
(1) The MCU 35 can turn on the vibration detection circuit 36 in response to the turning-on operation of the zoom button 33, and can perform an initial adjustment operation from t61 to t63. Further, the MCU 35 can start vibration detection at t63 to t64, t65 to t66, t67 to t68, and t69 to t70 according to the ON operation of the zoom button 33. Further, the MCU 35 can prohibit the vibration detection operation and cut off the power supply to the vibration detection circuit 36 at t70 after the zoom button 33 is turned off and a predetermined time has elapsed.

  (2) When the zoom button 33 is turned off and the zoom button 33 is turned on again when the zoom button 33 is turned off or the zoom button 33 is turned off from the on operation, the MCU 35 vibrates. The detection circuit 36 is turned on to perform an initial adjustment operation. In this case, since the MCU 35 has already performed the on operation and the initial adjustment operation of the vibration detection circuit 36, the initial adjustment operation is not originally required when the zoom button 33 is turned off and again. However, considering the use of the vibration detection device for a camera or a video movie, the user often changes the shooting angle of view or determines the shooting angle of view in accordance with the operation of the zoom button 33. When the zoom button 33 is operated by the user or when the shooting angle of view is changed during operation, extremely large vibrations may occur. For this reason, the MCU 35 performs the initial adjustment operation again in order to cancel the error or malfunction caused by the pull-back operation or the joining operation performed before that, and then restarts the vibration detection. Further, the MCU 35 prohibits the pull back operation and the joining operation when the user operates the zoom button 33 to perform zoom driving. For this reason, it is possible to prevent a connecting error from occurring in the correction calculation output signal Vout ′ (t) due to a large vibration such as a change in the angle of view.

(Release button half-press operation and vibration detection operation)
Next, an operation when the release button in the camera according to the fifth embodiment of the present invention is half-pressed by the user will be described. FIG. 18 is a flowchart for explaining an operation when the release button is half-pressed by the user in the camera according to the fifth embodiment of the present invention. FIG. 19 is a timing chart for explaining the operation when the release button is half-pressed by the user in the camera according to the fifth embodiment of the present invention. In the following, detailed description of the same steps as those shown in FIG. 14 is omitted.

  In S4300, the MCU 35 starts the camera operation 3.

  In S4301, the MCU 35 determines whether or not the half-press switch SW11 has been turned on. At t81 shown in FIG. 19, when the half-press switch SW11 is turned on, the process proceeds to S4302, and when the half-press switch SW11 is not turned on, the determination in S4301 is repeated.

  In S4302, the MCU 35 turns on the vibration detection circuit 36. At t81, the MCU 35 instructs the control signal generators 5d and 15d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 36 is turned on.

  In S4303, the MCU 35 waits until the power supply line Vdd is stabilized. The MCU 35 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t81 to t82.

  In S4304, the MCU 35 starts an initial adjustment operation. The MCU 35 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 from t82 to t83.

  In S4305, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the camera at t83.

  In S4306, the MCU 35 permits the pull back operation. The MCU 35 permits the pull back operation at t83. As a result, in S3606 shown in FIG. 12, the MCU 35 determines that the pull back operation is permitted.

  In S4307, the MCU 35 determines whether or not the half-press switch SW11 has been turned off. The MCU 35 determines whether or not the user operates the release button 31 to turn off the half-push switch SW11 and the half-push switch on signal becomes High. When the half-press switch SW11 is turned off at t84, the process proceeds to S4308. When the half-push switch SW11 is not turned off, the determination in S4307 is repeated.

  In S4308, the MCU 35 starts a timer. The MCU 35 sets a predetermined time from the timer start to the time-up by the built-in timer, and starts the timer.

  In S4309, the MCU 35 determines whether the time is up. If the timer has expired, the process proceeds to S4311. If the timer has not expired, the process proceeds to S4310.

  In S4310, the MCU 35 determines whether or not the half-press switch SW11 has been turned on. When the half-push switch SW11 is turned on again at t85, the process returns to S4304, and the MCU 35 repeats the processes after S4304 and performs the initial adjustment operation from t85 to t86. When the half-press switch SW11 is not turned on, the process returns to S4309, and the MCU 35 repeats the processes after S4309.

  In S4311, the MCU 35 ends the vibration detection. After the half-push switch SW11 is turned off at t87, the MCU 35 prohibits the vibration detection interrupt process 4 at t88 when the timer times up.

  In S4312, the MCU 35 turns off the vibration detection circuit 36. At time t88, the MCU 35 instructs the control signal generator 65d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 36 is turned off. As a result, the supply of power to the vibration detection circuit 36 is interrupted. When the process of S4312 is completed, the process returns to S4301, and the MCU 35 repeats the processes after S4301.

As described above, the camera according to the fifth embodiment of the present invention has the following effects.
(1) When the vibration detection device is used for a camera or the like, the user often turns on the half-push switch SW11 again after a short time has passed since the half-push switch SW11 was turned off. is there. Once the vibration detection circuit 36 is turned off, drifts when the vibration gyros 1 and 15 and the vibration detection unit 25 are turned on, output stability when the vibration detection circuit 36 is turned on, and the like affect the vibration detection accuracy. Or it takes time to stably detect vibration. The MCU 35 performs the vibration detection operation by turning on the vibration detection circuit 36 for a predetermined time after the half-push switch SW11 is turned off. This eliminates the need for a stabilization time when the power is turned on, so that vibration can be detected immediately when the half-press switch SW11 is turned on again.

  (2) When the half-push switch SW11 is turned off and the half-push switch SW11 is turned on again or when the half-push switch SW11 is turned on again when the half-push switch SW11 is turned off, In some cases, the vibration detection circuit 36 is turned on to perform an initial adjustment operation. In this case, since the MCU 35 has already performed the ON operation and the initial adjustment operation of the vibration detection circuit 36, the initial adjustment operation is not necessary when the half-press switch SW11 is turned ON again. However, in consideration of the use of a vibration detection device for a camera or the like, when the half-push switch SW11 is turned on, the user has already determined the shooting angle of view, and the vibration applied to the camera or the like is often small to some extent. . On the other hand, at the timing before the half-push switch SW11 is turned on, the user often changes the shooting angle of view and a large vibration is applied to the camera or the like. For this reason, the MCU 35 performs the initial adjustment operation again so as not to cause an error or malfunction in the pulling-back operation and the joining operation performed before that.

  Also, if a large vibration is applied to the camera or the like during the initial adjustment operation shown in FIGS. 2 and 3, the vibration detection device may not be able to perform an accurate adjustment operation. For this reason, the MCU 35 performs the initial adjustment operation again after the half-push switch SW11 is turned on, in which the vibration applied to the camera is expected to be somewhat small.

(Main button operation and vibration detection operation)
Next, an operation when the main button in the camera according to the fifth embodiment of the present invention is operated by the user will be described. FIG. 20 is a flowchart for explaining the operation when the main button is operated by the user in the camera according to the fifth embodiment of the present invention. FIG. 21 is a timing chart for explaining the operation when the main button is operated by the user in the camera according to the fifth embodiment of the present invention. Hereinafter, detailed description of the same steps as those shown in FIG. 18 will be omitted.

  In S4400, the MCU 35 starts the camera operation 4.

  In S4401, the MCU 35 determines whether or not the main button 32 is turned on. When the main switch SW13 is turned on at t91 shown in FIG. 21, the process proceeds to S4402, and when the main switch SW13 is not turned on, the determination in S4401 is repeated.

  In S4402, the MCU 35 turns on the vibration detection circuit 36. The MCU 35 instructs the control signal generators 5d and 15d to generate a PC signal at t91, the PC signal becomes High, and the vibration detection circuit 36 is turned on.

  In S4403, the MCU 35 waits until the power supply line Vdd is stabilized. The MCU 35 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t91 to t92.

  In S4404, the MCU 35 starts an initial adjustment operation. The MCU 35 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 from t92 to t93.

  In S4405, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the camera at t93.

  In S4406, the MCU 35 permits the pull back operation. The MCU 35 permits the pull back operation at t93.

  In S4407, the MCU 35 determines whether or not the main button 32 has been turned off. The MCU 35 determines whether or not the main switch SW13 is turned off and the main switch on signal becomes High. When the main switch SW13 is turned off at t94, the process proceeds to S4408. When the main switch SW13 is not turned off, the determination in S4407 is repeated.

  In S4408, the MCU 35 starts a timer. The MCU 35 sets a predetermined time from the timer start to the time-up by the built-in timer, and starts the timer.

  In S4409, the MCU 35 determines whether or not the time is up. If the timer has expired, the process proceeds to S4411. If the timer has not expired, the process proceeds to S4410.

  In S4410, the MCU 35 determines whether or not the main button 32 is turned on. When the main switch SW13 is turned on again, the process returns to S4404, and the MCU 35 repeats the processes after S4304. When the main switch SW13 is not turned on, the process returns to S4409, and the MCU 35 repeats the processes after S4309.

  In S4411, the MCU 35 ends the vibration detection. After the main switch SW13 is turned off at t94, the MCU 35 inhibits the vibration detection interrupt process 4 at t95 when the timer times up.

  In S4412, the MCU 35 turns off the vibration detection circuit 36. At t95, the MCU 35 instructs the control signal generators 5d and 15d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 36 is turned off. As a result, the supply of power to the vibration detection circuit 36 is interrupted. When the process of S4412 is completed, the process returns to S4401, and the MCU 35 repeats the processes after S4401.

  As described above, the camera according to the fifth embodiment of the present invention has the following effects. When the vibration detection device is used for a camera or the like, the user frequently turns on the main switch SW13 again after a lapse of time after the main switch SW13 is turned off. Once the vibration detection circuit 36 is turned off, drifts when the vibration gyros 1 and 15 and the vibration detection unit 25 are turned on, output stability when the vibration detection circuit 36 is turned on, and the like affect the vibration detection accuracy. Or it takes time to stably detect vibration. The MCU 35 performs the vibration detection operation by turning on the vibration detection circuit 36 for a predetermined time after the main switch SW13 is turned off. This eliminates the need for a stabilization time when the power is turned on, so that vibration can be detected immediately when the half-press switch SW11 is turned on again.

(Sixth embodiment)
Next, the operation of the camera according to the sixth embodiment of the present invention will be described. FIG. 22 is a flowchart for explaining the operation when vibration exceeding the output range is applied to the camera according to the sixth embodiment of the present invention. In the flowchart shown in FIG. 22, the processes of S3706 to S3709 are different from the flowchart shown in FIG. 13. Hereinafter, detailed description of the same steps as those shown in FIGS. 7 and 13 will be omitted. Unlike the fifth embodiment, the camera according to the sixth embodiment of the present invention is another embodiment that prevents an increase in errors caused by the joining operation.

  In S3700, the MCU 35 starts a vibration detection interrupt process (interval interrupt) 5.

  In S3709, the MCU 35 sets the initial adjustment FLG. When the MCU 35 finishes the determinations of S3706 to S3708 and determines that at least one of these determinations does not satisfy the condition, the MCU 35 proceeds to S3709. The MCU 35 prohibits the pull back operation in S3710 and sets the initial adjustment FLG.

  In S3712, the MCU 35 ends the vibration detection interrupt process 5. In S3709, the MCU 35 sets the initial adjustment FLG and ends the vibration detection interrupt process 5. In addition, when the MCU 35 finishes the determinations in S3606 to S3609 and determines that all the conditions of these determinations are satisfied, the MCU 35 performs a pull back operation in S3610 and ends the vibration detection interrupt process 5.

  As described above, the vibration detection interrupt processing 5 shown in FIG. 122 sets the initial adjustment FLG by prohibiting the pull back operation and the joining operation in the following cases. First, when the corrected output signal Vout ′ after the pull back operation and the joining operation is large, second, when the pull back count Np is large, and third, when the operation output signal Vout changes rapidly, the pull back is performed. Errors caused by movement and splicing operations can increase.

(Release button half-press operation and vibration detection operation)
Next, an operation when the initial adjustment FLG is set in the camera according to the fifth embodiment of the present invention will be described. FIG. 23 is a flowchart for explaining the operation when the release button is half-pressed by the user in the camera according to the fifth embodiment of the present invention. FIG. 24 is a timing chart for explaining the operation when the release button is half-pressed by the user in the camera according to the fifth embodiment of the present invention. Hereinafter, detailed description of the same steps as those shown in FIG. 18 will be omitted.

  In S4500, the MCU 35 starts the camera operation 5.

  In S4501, the MCU 35 determines whether or not the release button 31 has been pressed halfway. When the half-press switch SW11 is turned on at t101 shown in FIG. 24, the process proceeds to S4502, and when the half-press switch SW11 is not turned on, the determination in S4501 is repeated.

  In S4502, the MCU 35 turns on the vibration detection circuit 36. The MCU 35 instructs the control signal generators 5d and 15d to generate a PC signal at t102, the PC signal becomes High, and the vibration detection circuit 36 is turned on.

  In S4503, the MCU 35 waits until the power supply line Vdd is stabilized. The MCU 35 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t102 to t103.

  In S4504, the MCU 35 ends the vibration detection. The MCU 35 temporarily prohibits the vibration detection interrupt process 5.

  In S4505, the MCU 35 starts an initial adjustment operation. The MCU 35 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t102 to t103.

  In S4506, the MCU 35 clears the initial adjustment FLG.

  In S4507, the MCU 35 starts vibration detection. The MCU 35 permits the vibration detection interrupt process 5 and starts detecting the vibration generated in the camera at t103. When the MCU 35 determines that at least one of the determinations of S3706 to S3708 shown in FIG. 22 is not satisfied, the MCU 35 prohibits the pull back operation and the joining operation, and sets the initial adjustment FLG in S3709.

  In S4508, the MCU 35 determines whether or not the initial adjustment FLG is set. If the initial adjustment FLG is set at t104 (t107), the process returns to S4504. The MCU 35 repeats the processes from S4504 to S4505, and performs the initial adjustment operation again from t105 (t108) to t106 (t109). When the initial adjustment FLG is not set, the process proceeds to S4509.

  In S4509, the MCU 35 determines whether or not the half-press operation of the release button 31 has been turned off. The MCU 35 determines whether or not the half-push switch SW11 is turned off and the half-push switch on signal becomes High. If the half-press switch SW11 is turned off at t110, the process proceeds to S4510. If the half-push switch SW11 is not turned off, the process returns to S4508, and the MCU 35 repeats the determinations after S4508.

  In S4510, the MCU 35 ends the vibration detection. The MCU 35 prohibits the vibration detection interrupt process 5 at t110.

  In S4511, the MCU 35 turns off the vibration detection circuit 36. At t110, the MCU 35 instructs the control signal generators 5d and 15d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 36 is turned off. As a result, the supply of power to the vibration detection circuit 36 is interrupted. When the process of S4312 ends, the process returns to S4501, and the MCU 35 repeats the processes after S4501.

As described above, the camera according to the sixth embodiment of the present invention has the following effects in addition to the effects of the fifth embodiment. For example, when a large vibration is suddenly applied to the vibration detection device or the camera, such as when the vibration detection device or the camera is hit against something or when the shooting angle of view of the camera is suddenly changed, the pull back operation and the connection are performed. There is a possibility that the error of the correction calculation output signal Vout ′ (t) is increased by the matching operation. Further, during operation and splicing operation pullback at time t-t s _~ time t shown in FIG. 8, when a large vibration to the vibration detecting device or camera occurs, return operation and stitching operation is likely to malfunction. As shown in FIGS. 22 to 24, the MCU 35 initializes the offset value Voffset by performing the initial adjustment operation again. As a result, errors and malfunctions caused by the pull back operation and the joining operation can be eliminated.

[Camera system]
(Seventh embodiment)
Hereinafter, an example in which the vibration detection apparatus according to the first to fourth embodiments of the present invention is applied to a single-lens reflex camera system will be described with reference to the drawings. FIG. 25 is a block diagram showing a camera system according to the seventh embodiment of the present invention. The camera system according to the seventh embodiment of the present invention includes a camera body 50 and an interchangeable lens 51 that is detachably attached to the camera body 50 by a known technique, and includes various camera bodies and various interchangeable lenses. Can be installed in combination. The camera body 50 and the interchangeable lens 51 are provided with electrical contacts and the like in their mounting portions, and supplies power from the camera body 50 side to the interchangeable lens 51 side by a known technique.

(Camera body)
The camera body 50 is a photographing apparatus body such as a video movie, an electronic still camera, or a silver salt camera, for example. The camera body 50 includes an imaging element such as a silver salt film or a CCD in an electronic still camera as a medium for imaging. The camera body 50 includes a body side MCU 53, a digital power supply circuit 52, and a power power supply circuit 54.

  The body side MCU 53 mainly controls the sequence on the camera body 50 side. A digital power supply circuit 52 and a power power supply circuit 54 are connected to the body side MCU 53.

  The digital power supply circuit 52 supplies the digital power supply VCC to the lens side MCU 55 through the VCC line to the interchangeable lens 51 side. The digital power supply circuit 52 is controlled by the body side MCU 53.

  The power system power supply circuit 54 supplies the power system power supply PVCC to the vibration detection circuit 56 through the PVCC line to the interchangeable lens 51 side. The power system power supply circuit 54 is controlled by the body side MCU 53.

(interchangeable lens)
The interchangeable lens 51 includes a lens side MCU 55 and a vibration detection circuit 56.

  The lens side MCU 55 is mainly for controlling the interchangeable lens 51 side. A vibration detection circuit 56 is connected to the lens side MCU 55. The lens-side MCU 55 can communicate with the body-side MCU 53 through an electrical contact provided in a mounting portion with the camera body 50, and the lens-side MCU 55 and the body-side MCU 53 have a communication function. The lens-side MCU 55 corresponds to the MCUs 5 and 15 shown in FIGS. 1 and 9, and includes A / D converters 5a and 15a, operation signal generation units 5b and 15b, correction units 5c and 15c, control signal generation units 5d and 15d, and the like. including.

  The vibration detection circuit 56 is a circuit for detecting vibration generated in the camera body 50 and the interchangeable lens 51. The vibration detection circuit 56 corresponds to all circuits other than the MCUs 65 and 15 shown in FIGS. 1 and 9, and includes the vibration gyros 1 and 11, the vibration detection unit 21, the circuits 2, 12 and 21, and the circuits 3, 13 and 23. including. The power system power supply PVCC is supplied from the power system power supply circuit 54 to the power supply circuits 4 and 14 shown in FIGS. 1 and 9 through the PVCC line.

  In the following, for the circuits and signals other than the lens-side MCU 55, the names and symbols in FIGS. 1, 9 and 13 are used as they are. The initial adjustment operation uses the flowcharts shown in FIGS. 2 and 3, the vibration detection operation uses the flowchart shown in FIG. 13, and the interchangeable lens MCU 55 includes these programs. To do.

  Next, the operation of the camera system according to the seventh embodiment of the present invention will be described. FIG. 26 is a flowchart for explaining the operation of the body side MCU in the camera system according to the seventh embodiment of the present invention. FIG. 27 is a flowchart for explaining the operation of the lens side MCU in the camera system according to the seventh embodiment of the present invention. FIG. 28 is a timing chart for explaining the operation when power is supplied from the camera body side in the camera system according to the seventh embodiment of the present invention. FIG. 26 shows only the part related to the seventh embodiment of the present invention extracted from the program incorporated in the body side MCU 53. FIG. 27 shows only the part related to the seventh embodiment of the present invention extracted from the program incorporated in the lens side MCU 55.

  In S5100, the body side MCU 53 starts body processing 1.

  In S5101, the body side MCU 53 operates the digital power supply circuit 52 to supply the digital power supply VCC to the interchangeable lens 51 side. The body side MCU 53 controls the digital power supply circuit 52 at t111 shown in FIG. 28, and the digital power supply circuit 52 starts supplying the digital power supply VCC to the lens side MCU 55 through the VCC line.

  In S5102, the body side MCU 53 operates the power system power supply circuit 54 to supply the power system power supply PVCC to the interchangeable lens 51 side. The body side MCU 53 controls the power system power supply circuit 54 at t111, and the power system power supply circuit 54 starts supplying the power system power supply PVCC to the vibration detection circuit 56 through the PVCC line.

  In step S <b> 5103, the body side MCU 53 starts communication with the interchangeable lens 51. The body side MCU 53 starts communication with the lens side MCU 55 at t115.

  In S5104, the body side MCU 53 ends the body processing 1.

  In S6100, the lens side MCU 55 starts the processing 1 after the interchangeable lens power is turned on. The lens side MCU 55 starts operating after t111 when the digital power supply circuit 52 on the camera body 50 side supplies the digital power supply VCC.

  In step S6101, the lens side MCU 55 turns on the vibration detection circuit 56. At t112, the lens side MCU 55 instructs the control signal generator 65d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 56 is turned on. As a result, the vibration detection circuit 56 supplies power to all the circuits including the vibration detection circuit 56 through the power supply line Vdd using the digital power supply VCC supplied by the power system power supply circuit 54 on the camera body 50 side.

  In S6102, the lens side MCU 55 waits until the power supply line Vdd is stabilized. The lens-side MCU 55 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t112 to t113.

  In S6103, the lens side MCU 55 starts an initial adjustment operation. The lens-side MCU 55 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t113 to t114. In S3251, the lens side MCU 55 sets (initializes) the offset value Voffset to zero, and in S3252, the lens side MCU 55 sets (initializes) the number of pullbacks Np to zero. In S3253, the lens side MCU 55 operates the output signal generation unit 67 to output the output signal V00 from the D / A converter 67a, and outputs the output signal V10 from the D / A converter 67b. In S3254, the lens side MCU 55 waits until the output signal Vda0 (voltage V00), the output signal Vda1 (voltage V10), and the calculation output signal Vout are stabilized. In S3250 to S3221, the lens-side MCU 55 adjusts the calculation output signal Vout to a predetermined voltage (near 2.0 V), and proceeds to S6104 shown in FIG.

  In step S6104, the lens side MCU 55 starts vibration detection. The lens-side MCU 55 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the camera at t114. The MCU 161 detects vibration generated in the camera body 50 and the interchangeable lens 51 almost in real time.

  In step S6105, the lens side MCU 55 permits the pull back operation. The lens side MCU 55 permits the pull back operation at t114. As a result, in S3606 shown in FIG. 13, the lens side MCU 55 determines that the pull back operation is permitted. Further, when a large vibration exceeding the dynamic range is applied, the correction calculation output signal Vout ′ (t) can be obtained by the pull back operation and the joining operation.

  In step S <b> 6106, the lens side MCU 55 starts communication with the camera body 50. The lens side MCU 55 starts communication with the body side MCU 53 at t115.

  In step S6107, the lens side MCU 55 ends the processing 1 after the interchangeable lens power is turned on.

  As described above, the camera system according to the seventh embodiment of the present invention has the following effects in addition to the effects of the first to fourth embodiments of the present invention. A certain amount of time is required for the processing from turning on the vibration detection circuit 56 to starting the initial adjustment operation and the vibration detection operation and permitting the pull back operation and the joining operation. The lens-side MCU 55 can turn on the vibration detection circuit 56 in response to power supply from the camera body 50 side, start an initial adjustment operation and a vibration detection operation, and permit a pull-back operation and a joining operation. . For this reason, it is not necessary to perform these operations at the time of photographing or the like, and these operations can be performed in advance at a timing that requires vibration detection at the time of photographing or the like.

(Eighth embodiment)
Next, the operation of the camera system according to the eighth embodiment of the present invention will be described. FIG. 29 is a flowchart for explaining the operation of the lens side MCU in the camera system according to the eighth embodiment of the present invention. FIG. 30 is a timing chart for explaining an operation when communication is received from the camera body side in the camera system according to the eighth embodiment of the present invention. FIG. 29 shows only the part related to the eighth embodiment of the present invention extracted from the program incorporated in the lens side MCU 55, and the body side MCU 53 performs the operation shown in FIG. Hereinafter, detailed description of the same steps as those shown in FIG. 27 is omitted.

  Unlike the seventh embodiment, the camera system according to the eighth embodiment of the present invention is another embodiment that performs a vibration detection operation or the like in response to communication from the camera body 50 side.

  In S6200, the lens side MCU 55 starts the processing 2 after the interchangeable lens power is turned on. The lens side MCU 55 starts operating after t121 when the digital power supply circuit 52 on the camera body 50 side supplies the digital power supply VCC.

  In step S <b> 6201, the lens side MCU 55 determines whether there is communication from the camera body 50. The lens side MCU 55 determines whether there is communication from the body side MCU 53. When there is communication from the body side MCU 53 at t122 shown in FIG. 30, the process proceeds to S6202. When there is no communication from the body side MCU 53, the lens side MCU 55 repeats the determination of S6201.

  In step S6202, the lens side MCU 55 communicates with the camera body 50. The lens side MCU 55 starts communication with the body side MCU 53 at t122.

  In S6203, the lens side MCU 55 turns on the vibration detection circuit 56. At t123, the lens side MCU 55 instructs the control signal generator 65d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 56 is turned on.

  In S6204, the lens side MCU 55 waits until the power supply line Vdd is stabilized. The lens side MCU 55 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t123 to t124.

  In step S6205, the lens side MCU 55 starts an initial adjustment operation. The MCU 161 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 at t123 to t125.

  In S6206, the lens side MCU 55 starts vibration detection. The MCU 161 permits the vibration detection interrupt processing 4 and 5, and starts detecting the vibration generated in the camera body 50 and the interchangeable lens 51 at t125.

  In S6207, the lens side MCU 55 permits the pull back operation at t125.

  In step S6208, the lens side MCU 55 determines whether there is communication from the camera body 50. When there is communication from the body side MCU 53, the process proceeds to S6209. When there is no communication from the body side MCU 53, the lens side MCU 55 repeats the determination of S6208.

  In step S <b> 6209, the lens side MCU 55 communicates with the camera body 50. The lens-side MCU 55 starts communication with the body-side MCU 53, returns to S6208, and repeats the processing from S6208 onward.

  As described above, the camera system according to the eighth embodiment of the present invention has the following effects in addition to the effects of the first to fourth embodiments of the present invention. A certain amount of time is required for the processing from turning on the vibration detection circuit 56 to starting the initial adjustment operation and the vibration detection operation and permitting the pull back operation and the joining operation. The lens-side MCU 55 can turn on the vibration detection circuit 56 in response to communication from the camera body 50 side, start an initial adjustment operation and a vibration detection operation, and permit a pull-back operation and a joining operation. For this reason, it is not necessary to perform these operations at the time of photographing or the like, and these operations can be performed in advance at a timing that requires vibration detection at the time of photographing or the like.

(Ninth embodiment)
Next, the operation of the camera system according to the ninth embodiment of the present invention will be described. FIG. 31 is a flowchart for explaining the operation of the lens side MCU in the camera system according to the ninth embodiment of the present invention. FIG. 32 is a timing chart for explaining an operation when communication is received from the camera body side in the camera system according to the ninth embodiment of the present invention. FIG. 31 shows only the part related to the ninth embodiment of the present invention extracted from the program incorporated in the lens side MCU 55, and the body side MCU 53 performs the operation shown in FIG. Hereinafter, detailed description of the same steps as those shown in FIG. 29 is omitted.

  Unlike the seventh and eighth embodiments, the camera system according to the ninth embodiment of the present invention is another embodiment that performs a vibration detection operation or the like in response to predetermined communication from the camera body 50 side. .

  In S6300, the lens side MCU 55 starts the processing 3 after the interchangeable lens power is turned on. The lens side MCU 55 starts operating after t131 when the digital power supply circuit 52 on the camera body 50 side supplies the digital power supply VCC.

  In step S6301, the lens side MCU 55 determines whether there is communication from the camera body 50. The lens side MCU 55 determines whether there is communication from the body side MCU 53. If there is communication from the body side MCU 53 at t132 shown in FIG. 32, the process proceeds to S6302. When there is no communication from the body side MCU 53, the lens side MCU 55 repeats the determination of S6301.

  In S6302, the lens side MCU 55 communicates with the camera body 50. The lens side MCU 55 starts communication with the body side MCU 53 at t132.

  In S6303, the lens side MCU 55 determines whether or not a predetermined communication command is received from the camera body 50. The lens side MCU 55 determines whether or not a predetermined communication command is received from the body side MCU 53. For example, when a predetermined communication command is received from the body side MCU 53 at t132 (t136), the process proceeds to S6304, and when a predetermined communication command is not received from the body side MCU 53, the process returns to S6301 and the lens side MCU 55 determines that S6301. The subsequent processing is repeated.

  In S6304, the lens side MCU 55 determines whether or not the vibration detection circuit 56 has already been turned on. For example, when the vibration detection circuit 56 has already been turned on at t133, it is not necessary to turn on the vibration detection circuit 56 and wait until the power supply line Vdd is stabilized, and thus the process proceeds to S6307. When the vibration detection circuit 56 is not turned on, the process proceeds to S6305.

  In step S6305, the lens side MCU 55 turns on the vibration detection circuit 56. At t133, the lens side MCU 55 instructs the control signal generator 65d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 56 is turned on.

  In S6306, the lens side MCU 55 waits until the power supply line Vdd is stabilized. The lens side MCU 55 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t133 to t134.

  In step S6307, the lens side MCU 55 starts an initial adjustment operation. The MCU 161 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 between t134 and t135. If the lens-side MCU 55 determines in S6304 that the vibration detection circuit 56 has already been turned on, the lens-side MCU 55 executes the processing of S3250 to S3221 from t137 to t138.

  In step S6308, the lens side MCU 55 starts a vibration detection operation. The MCU 161 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the camera body 50 and the interchangeable lens 51 at t135 (t138).

  In step S6309, the lens side MCU 55 permits the pull back operation. The lens side MCU 55 permits the pull back operation at t135 (t138), returns to S6301, and repeats the processing after S6301.

As described above, the camera system according to the ninth embodiment of the present invention has the following effects in addition to the effects of the first to fourth embodiments of the present invention.
(1) A certain amount of time is required for processing from turning on the vibration detection circuit 56 to starting the initial adjustment operation and the vibration detection operation and permitting the pull back operation and the joining operation. The lens side MCU 55 turns on the vibration detection circuit 56 in response to a predetermined communication command from the camera body 50 side, starts the initial adjustment operation and the vibration detection operation, and permits the pull back operation and the joining operation. Can do. For this reason, it is not necessary to perform these operations at the time of photographing or the like, and these operations can be performed in advance at a timing that requires vibration detection at the time of photographing or the like.

  In general, in a camera system including a detachable interchangeable lens 51 and a camera body 50, a release button or the like operated by a user is provided on the camera body 50 side. On the other hand, the vibration generated in the camera system is deeply related to the operation on the camera body 50 side by the user, for example, the operation of the release button or the main button. For example, after the user changes the shooting angle of view and determines the shooting angle of view, the user operates the release button to shoot. The lens side MCU 55 can perform the initial adjustment operation at a timing that requires the initial adjustment operation in accordance with a user operation recognized by the body side MCU 53. As a result, when the vibration generated in the camera system is small, it is possible to perform an initial adjustment operation with little adjustment error and high accuracy.

  (2) When the vibration detection circuit 56 has already been turned on, the lens side MCU 55 does not turn on the vibration detection circuit 56 again, but starts the initial adjustment operation and the vibration detection operation, and the pull back operation and the joining operation. Can be allowed.

〔interchangeable lens〕
(10th Embodiment)
Hereinafter, an example in which the vibration detection device according to the first to fourth embodiments of the present invention is applied to an interchangeable lens will be described with reference to the drawings. FIG. 33 is a block diagram of an interchangeable lens according to the tenth embodiment of the present invention.

  The interchangeable lens 70 can be attached to and detached from a camera body of a single-lens reflex camera by a known technique. The interchangeable lens 70 includes photographing lenses 71, 72, 73, 74, a lens side MCU 75, a vibration detection circuit 76, a distance encoder 77, a zoom encoder 78, a position detection circuit 79, a motor drive circuit 80, and an AF. A motor 81, a distance ring 82, and a zoom ring 83 are provided. The interchangeable lens 70 includes an electrical contact or the like at the mounting portion with the camera body.

  The photographing lenses 71, 72, 73, and 74 move in the direction of the optical axis I in conjunction with the operation of the zoom ring 83 by the user, and a variable power optical system (hereinafter referred to as a zoom lens) that continuously varies the focal length. ) By rotating the zoom ring 83, the user can shoot at an arbitrary shooting magnification within a predetermined range. The photographing lens 72 is a focusing lens that moves in the direction of the optical axis I by the rotation operation of the distance ring 82 by the user or the rotational drive of the AF motor 81 to adjust the focus of the image on the film surface or the imaging surface. .

  The lens side MCU 75 is for controlling the interchangeable lens 70. For example, the lens-side MCU 75 controls driving of the motor drive circuit 80, recognizes the position of the photographing lens 72 (hereinafter referred to as the focusing lens 72) in the optical axis I direction, and positions of the distance ring 82 and the focusing lens 72. The position or its change is recognized, or the position of the zoom ring 83 or its change and the focal length or its change are recognized. A vibration detection circuit 76, a distance encoder 77, a zoom encoder 78, a position detection circuit 79, and a motor drive circuit 80 are connected to the lens side MCU 75. The lens-side MCU 75 can communicate with the body-side MCU through an electrical contact provided at a mounting portion with the camera body, and the lens-side MCU 75 has a communication function. The lens-side MCU 75 corresponds to the MCUs 65 and 15 shown in FIGS. 1 and 9, and includes A / D converters 5a and 15a, operation signal generation units 5b and 15b, correction units 5c and 15c, and control signal generation units 5d and 15d. including.

  The vibration detection circuit 76 is a circuit for detecting vibration generated in the interchangeable lens 70. The vibration detection circuit 76 corresponds to all circuits other than the MCUs 65 and 15 shown in FIGS. 1 and 9, and the vibration gyro 1 and 11, the vibration detection unit 21, the circuits 2, 12 and 22, and the circuits 3, 13 and 23, Power supply circuits 4 and 14 are included. The vibration detection circuit 76 is controlled by the lens side MCU 75.

  The distance encoder 77 detects the position of the distance ring 82 interlocked with the movement of the focusing lens 72 in the optical axis I direction. The distance encoder 77 receives four distance encoder signals, and detects the position of the distance ring 82 based on a combination of phases (High or Low) of the four distance encoder signals.

  The zoom encoder 78 detects the position of the zoom ring 83 or the focal length of the photographing lens linked to the zoom ring 83. The zoom encoder 78 receives four zoom encoder signals, and detects the position of the zoom ring 83 or the focal length of the photographic lens based on the combination of the phases (High or Low) of the four zoom encoder signals.

  The position detection circuit 79 detects the position of the focusing lens 72 in the optical axis I direction.

  The motor drive circuit 80 is for driving the AF motor 81. An AF motor 81 is connected to the motor drive circuit 80.

  The AF motor 81 is for driving the focusing lens 72 in the optical axis I direction. The AF motor 81 is connected to, for example, a focusing lens 72 by a known technique such as a gear, and converts the rotational motion into a linear movement to drive the focusing lens 72 in the optical axis I direction.

  In the following, for the circuits and signals other than the lens-side MCU 75, the names and symbols in FIGS. 1, 9 and 11 are used as they are. The initial adjustment operation uses the flowcharts shown in FIGS. 2 and 3, the vibration detection operation uses the flowchart shown in FIG. 12, and the lens-side MCU 75 incorporates these programs. To do.

Next, the operation of the interchangeable lens according to the tenth embodiment of the present invention will be described.
(Zoom ring operation and vibration detection operation)
FIG. 34 is a flowchart for explaining the operation when the zoom ring in the interchangeable lens according to the tenth embodiment of the present invention is operated by the user. FIG. 34 shows only the part related to the tenth embodiment of the present invention extracted from the program incorporated in the lens side MCU 75.

  In S7100, the lens side MCU 75 starts zoom ring operation detection interrupt processing (interval interrupt processing). The zoom ring operation detection interrupt process is an interval interrupt process that is repeatedly performed at intervals of 50 ms by a timer built in the lens side MCU 75, for example. The lens-side MCU 75 permits zoom ring operation detection interrupt processing at a predetermined timing.

  In S7101, the lens side MCU 75 reads the current position of the zoom ring 83. The lens side MCU 75 reads the current position of the zoom ring 83 by reading the phase of the zoom encoder signal output from the zoom encoder 78.

  In S7102, the lens side MCU 75 determines whether or not there is a change in the current position of the zoom ring 83 and the position of the zoom ring 83 in the previous zoom ring operation detection interrupt process. The lens-side MCU 75 compares the current position of the zoom ring 83 with the position of the zoom ring 83 before 50 ms, and determines whether or not both positions have changed. When there is a change between the current position of the zoom ring 83 and the previous position of the zoom ring 83, the process proceeds to S7103, and when there is no change between the current position of the zoom ring 83 and the previous position of the zoom ring 83, the process proceeds to S7104.

  In S7103, the lens side MCU 75 determines that the zoom ring 83 has been operated. In S7104, the lens side MCU 75 determines that the zoom ring 83 has not been operated.

  In step S <b> 7105, the lens side MCU 75 holds the current position of the zoom ring 83. The lens-side MCU 75 holds the current position of the zoom ring 83 read in S7101 until the next zoom ring operation detection interrupt process.

  In step S7106, the lens side MCU 75 ends the zoom ring operation detection interrupt processing.

  The lens-side MCU 75 repeatedly performs zoom ring operation detection interrupt processing at intervals of 50 ms. For this reason, when the user operates the zoom ring 83, the position of the zoom ring 83 to be read is changed at predetermined intervals, and the lens side MCU 75 can detect the operation of the zoom ring 83 by the user.

  Next, an operation when the zoom ring in the interchangeable lens according to the tenth embodiment of the present invention is operated by the user will be described. FIG. 35 is a flowchart for explaining the operation when the zoom ring is operated in the interchangeable lens according to the tenth embodiment of the present invention. FIG. 36 is a timing chart for explaining the operation when the zoom ring is operated in the interchangeable lens according to the tenth embodiment of the present invention. FIG. 35 shows the operation when the user operates the zoom ring 83 extracted from a program incorporated in the lens side MCU 75.

  In S6400, the lens side MCU 75 starts the interchangeable lens processing 1.

  In S6401, the lens side MCU 75 determines whether or not the zoom ring 83 is operated. The lens side MCU 75 recognizes whether or not the zoom ring 83 is operated by the zoom ring operation detection interrupt process shown in FIG. For example, when the zoom ring 83 is operated at t141 shown in FIG. 36, the process proceeds to S6402. When the zoom ring 83 is not operated, the lens side MCU 75 repeats the determination of S6401.

  In step S6402, the lens side MCU 75 turns on the vibration detection circuit 76. At t141, the lens side MCU 75 instructs the control signal generators 5d and 15d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 76 is turned on. As a result, power is supplied to the vibration detection circuit 76 through the power supply line Vdd.

  In S6403, the lens side MCU 75 waits until the power supply line Vdd is stabilized. The lens side MCU 75 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t141 to t142.

  In S6404, the lens side MCU 75 starts an initial adjustment operation. The lens side MCU 75 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t142 to t143. In S3251, the lens side MCU 75 sets (initializes) the offset value Voffset to zero, and in S3252, the lens side MCU 75 sets (initializes) the number of pullbacks Np to zero. In S3253, the lens side MCU 75 operates the output signal generation unit 7, outputs the output signal V00 from the D / A converter 7a, and outputs the output signal V10 from the D / A converter 7b. In S3254, the lens side MCU 75 waits for a time until the output signal Vda0 (voltage V00), the output signal Vda1 (voltage V10), and the calculation output signal Vout are stabilized. In S3250 to S3221, the lens side MCU 75 adjusts the calculation output signal Vout to a predetermined voltage (near 2.0 V), and proceeds to S6405 shown in FIG.

  In S6405, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detecting the vibration generated in the interchangeable lens 70 at t143. As a result, the lens-side MCU 75 detects vibration generated in the interchangeable lens 70 almost in real time. Further, when a large vibration exceeding the dynamic range is applied, the correction calculation output signal Vout ′ (t) can be obtained by the pull back operation and the joining operation.

  In S6406, the lens side MCU 75 prohibits the pull back operation at t143.

  In step S6407, the lens side MCU 75 determines whether or not the zoom ring 83 is being operated. The lens-side MCU 75 recognizes whether or not the zoom ring 83 is operated by the zoom ring operation detection interrupt process, and when the zoom ring 83 is operated, the process proceeds to S6408. On the other hand, for example, when the zoom ring 83 is not operated at t144, the lens side MCU 75 repeats the determination of S6407.

  In S6408, the lens side MCU 75 starts an initial adjustment operation. The lens-side MCU 75 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 from t144 to t145.

  In step S6409, the lens side MCU 75 starts vibration detection. The lens side MCU 75 permits the vibration detection interrupt process 4 and starts detecting the vibration generated in the interchangeable lens 70 at t145.

  In S6410, the lens side MCU 75 permits the pull back operation. The lens side MCU 75 permits the pull back operation at t145. As a result, in S3606 shown in FIG. 12, the lens side MCU 75 determines that the pull back operation is permitted.

  In S6411, the lens side MCU 75 starts a timer. For example, the lens-side MCU 75 has a built-in timer for notifying that a predetermined time has elapsed (time up). The lens-side MCU 75 sets a predetermined time from the timer start to the time-up by this timer, and starts the timer.

  In S6412, the lens side MCU 75 determines whether or not the time is up. The lens side MCU 75 determines whether or not the timer that has started has timed out. When the lens-side MCU 75 determines in S6407 whether or not the zoom ring 83 has been operated and then a predetermined time has elapsed (time up), the process proceeds to S6414. When the timer has not expired, the process proceeds to S6413. move on.

  In S6413, the lens side MCU 75 determines whether or not the zoom ring 83 is operated. If the lens side MCU 75 determines that the zoom ring 83 has been operated again based on the zoom ring operation detection interrupt processing at t146, the process returns to S6404. Then, the lens side MCU 75 repeats the processes after S6404 and performs an initial adjustment operation from t146 to t147. On the other hand, for example, when the zoom ring 83 is not operated at t148, the process returns to S6412, and the lens side MCU 75 repeats the processes after S6412.

  In S6414, the lens side MCU 75 ends the vibration detection. The lens side MCU 75 prohibits the vibration detection interrupt processing 4 and 5 at t150.

  In step S6415, the lens side MCU 75 turns off the vibration detection circuit 76. At t150, the lens side MCU 75 instructs the control signal generators 5d and 15d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 76 is turned off. As a result, the supply of power to the vibration detection circuit 76 is interrupted. When the process of S6415 is completed, the process returns to S6401, and the lens side MCU 75 repeats the processes after S6401.

As described above, the interchangeable lens according to the tenth embodiment of the present invention has the following effects.
(1) The lens-side MCU 75 performs an initial adjustment operation by turning on the vibration detection circuit 76 in accordance with the operation of the zoom ring 83 by the user. In many cases, the user performs shooting immediately after operating the zoom ring 83 to change the shooting focal length. However, the vibration gyros 1 and 11 and the vibration detection unit 21 and the circuits 2, 12, and 22 that process the output signal have an output drift when the power is turned on, and it takes time until the output signal is stabilized. Further, as shown in FIGS. 14 and 15, when the vibration detection circuit 76 is turned on in response to the operation of the release button 101 by the user and the vibration detection operation is started, this stable time cannot be secured in many cases. . Therefore, the lens-side MCU 75 performs the initial adjustment operation by turning on the vibration detection circuit 76 in accordance with the operation of the zoom ring 83 before photographing by the user.

  (2) The lens-side MCU 75 maintains the on-operation of the vibration detection circuit 76 for a predetermined time after the operation of the zoom ring 83 by the user is completed, and continues the vibration detection operation, the pull back operation, and the joining operation. . The lens-side MCU 75 ends the vibration detection operation when the predetermined time has elapsed since the operation stop of the zoom ring 83, and turns off the vibration detection circuit 76. For this reason, even if the user operates the release button 101 during these operations, the processing time such as the ON operation and the initial adjustment operation of the vibration detection circuit 76, the vibration gyros 1 and 11, the vibration detection unit 21, and the vibration Since the output stabilization time of the detection circuit 76 or the like is not required, it is possible to immediately perform photographing.

  (3) The lens side MCU 75 prohibits the pull back operation and the joining operation while the user operates the zoom ring 83. While the user operates the zoom ring 83, the user changes the shooting angle of view, so that the vibration applied to the interchangeable lens 70 becomes extremely large, and errors and malfunctions are caused by the pull back operation and the joining operation. It can happen. For this reason, in order to prevent these problems, the lens side MCU 75 prohibits the pull back operation and the joining operation while the user operates the zoom ring 83.

  (4) The lens side MCU 75 performs an initial adjustment operation in accordance with the end of the operation of the zoom ring 83 by the user. When the user finishes the operation of the zoom ring 83, the user determines the shooting angle of view, and the vibration applied to the interchangeable lens 70 is small, and the malfunction is less when the initial adjustment operation is performed at this timing. For this purpose, the lens side MCU 75 detects the operation of the zoom ring 83 by the user, starts the initial adjustment operation and vibration detection in response to the operation stop of the zoom ring 83, and permits the pull back operation and the joining operation. Yes.

(Distance ring operation and vibration detection operation)
Next, an operation when the distance ring in the interchangeable lens according to the tenth embodiment of the present invention is operated by the user will be described. FIG. 37 is a flowchart for explaining the operation when the distance ring in the interchangeable lens according to the tenth embodiment of the present invention is operated by the user. Note that detailed description of the same steps as those shown in FIG. 34 is omitted.

  In S7200, the lens side MCU 75 starts a distance ring operation detection interrupt process (interval interrupt process). The zoom ring operation detection interrupt process is an interval interrupt process that is repeatedly performed at intervals of 50 ms, for example. The lens-side MCU 75 permits zoom ring operation detection interrupt processing at a predetermined timing.

  In S7201, the lens side MCU 75 reads the current position of the distance ring 82. The lens-side MCU 75 reads the current position of the distance ring 82 based on the phase of the distance encoder signal output from the distance encoder 77.

  In S7202, the lens side MCU 75 determines whether or not there is a change in the current position of the distance ring 82 and the position of the distance ring 82 in the previous distance ring operation detection interrupt process. If there is a change in the position of the distance ring 82 at the current time and the position of the distance ring 82 before 50 ms, the process proceeds to S7203, and there is no change in the position of the distance ring 82 at the current time and the position of the distance ring 82 before 50 ms. Sometimes the process proceeds to S7204.

  In S7203, the lens side MCU 75 determines that the distance ring 82 has been operated. In S7204, the lens side MCU 75 determines that the distance ring 82 has not been operated.

  In S7205, the lens side MCU 75 holds the current position of the distance ring 82. The lens-side MCU 75 holds the current position of the distance ring 82 read in S7201 until the next distance ring operation detection interrupt process.

  In step S7206, the lens side MCU 75 ends the distance ring operation detection interrupt process.

  The lens-side MCU 75 repeatedly performs the distance ring operation detection interrupt process at intervals of 50 ms. Therefore, when the user operates the distance ring 82, the position of the distance ring 82 to be read is changed at predetermined intervals, and the lens side MCU 75 can detect the operation of the distance ring 82 by the user.

  Next, an operation when the distance ring in the interchangeable lens according to the tenth embodiment of the present invention is operated by the user will be described. FIG. 38 is a flowchart for explaining the operation when the distance ring in the interchangeable lens according to the tenth embodiment of the present invention is operated. FIG. 39 is a timing chart for explaining the operation when the distance ring in the interchangeable lens according to the tenth embodiment of the present invention is operated. Detailed description of the same steps as those shown in FIG. 35 is omitted.

  In S6500, the lens side MCU 75 starts the interchangeable lens processing 2.

  In S6501, the lens side MCU 75 determines whether or not the distance ring 82 is operated. The lens-side MCU 75 recognizes whether or not the distance ring 82 has been operated by the distance ring operation detection interrupt process shown in FIG. For example, when the distance ring 82 is operated at t161 shown in FIG. 39, the process proceeds to S6502. When the distance ring 82 is not operated, the lens side MCU 75 repeats the determination of S6501.

  In S6502, the lens side MCU 75 turns on the vibration detection circuit 76. At t161, the lens side MCU 75 instructs the control signal generators 5d and 15d to generate a PC signal, the PC signal becomes High, and the vibration detection circuit 76 is turned on. As a result, power is supplied to the vibration detection circuit 76 through the power supply line Vdd.

  In S6503, the lens side MCU 75 waits until the power supply line Vdd is stabilized. The lens side MCU 75 waits for a time T13 (= T11 + T12) shown in FIG. 4 from t161 to t162.

  In step S6504, the lens side MCU 75 starts an initial adjustment operation. The lens-side MCU 75 executes the processes of S3250 to S3221 shown in FIGS. 2 and 3 from t162 to t163.

  In step S6505, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the interchangeable lens 70 at t163.

  In S6506, the lens side MCU 75 prohibits the pull back operation at t163.

  In S6507, the lens side MCU 75 determines whether or not the distance ring 82 is operated. The lens side MCU 75 recognizes whether or not the distance ring 82 is operated by the distance ring operation detection interrupt process, and when the distance ring 82 is operated, the process proceeds to S6508. On the other hand, for example, when the distance ring 82 is not operated at t164, the lens side MCU 75 repeats the determination of S6507.

  In S6508, the lens side MCU 75 starts an initial adjustment operation. The lens-side MCU 75 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t164 to t165.

  In step S6509, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the interchangeable lens 70 at t165.

  In S6510, the lens side MCU 75 permits the pull back operation. The lens side MCU 75 permits the pull back operation at t165. As a result, in S3606 shown in FIG. 12, the lens side MCU 75 determines that the pull back operation is permitted.

  In S6511, the lens side MCU 75 starts a timer. The lens-side MCU 75 sets a predetermined time from the timer start to the time-up by the built-in timer and starts the timer.

  In S6512, the lens side MCU 75 determines whether or not the time is up. When the lens side MCU 75 determines in S6507 whether or not the distance ring 82 has been operated and after a certain period of time has elapsed, the lens-side MCU 75 proceeds to S6514. If the timer has not expired, the lens-side MCU 75 proceeds to S6513.

  In S6513, the lens side MCU 75 determines whether or not the distance ring 82 is operated. If the lens-side MCU 75 determines that the distance ring 82 has been operated again based on the distance ring operation detection interrupt process at t166, the process returns to S6504. Then, the lens-side MCU 75 repeats the processes after S6504 and performs an initial adjustment operation from t166 to t167. On the other hand, for example, when the distance ring 82 is not operated at t168, the process returns to S6512, and the lens side MCU 75 repeats the processes after S6512.

  In S6514, the lens side MCU 75 ends the vibration detection. The lens side MCU 75 prohibits the vibration detection interrupt processing 4 and 5 at t170.

  In step S6515, the lens side MCU 75 turns off the vibration detection circuit 76. At t170, the lens side MCU 75 instructs the control signal generator 65d to stop the PC signal, the PC signal becomes Low, and the vibration detection circuit 76 is turned off. As a result, the supply of power to the vibration detection circuit 76 is interrupted. When the process of S6515 ends, the process returns to S6501, and the lens side MCU 75 repeats the processes after S6501.

As described above, the interchangeable lens according to the tenth embodiment of the present invention has the following effects.
(1) The lens-side MCU 75 performs an initial adjustment operation by turning on the vibration detection circuit 76 in accordance with the operation of the distance ring 82 by the user. The user often takes a picture immediately after operating the distance ring 82 to change or adjust the focusing. However, the vibration gyros 1 and 11, the vibration detection unit 21, and the circuits 2, 12, and 22 that process the output signal have an output drift when the power is turned on, and it takes time until the output signal is stabilized. Further, as shown in FIGS. 13 and 14, when the vibration detection circuit 76 is turned on in response to the user's operation of the release button 101 and the vibration detection operation is started, this stable time cannot be secured in many cases. . Therefore, the lens side MCU 75 performs the initial adjustment operation by turning on the vibration detection circuit 76 in accordance with the operation of the distance ring 82 before photographing by the user.

  (2) The lens-side MCU 75 maintains the on-operation of the vibration detection circuit 76 for a predetermined time after the user completes the operation of the distance ring 82, and continues the vibration detection operation, the pull back operation, and the joining operation. . Then, the lens-side MCU 75 ends the vibration detection operation when the predetermined time has elapsed from the stop of the operation of the distance ring 82, and turns off the vibration detection circuit 76. For this reason, even if the user operates the release button 101 during these operations, the processing time such as the ON operation and the initial adjustment operation of the vibration detection circuit 76, the vibration gyros 1 and 11, the vibration detection unit 21, and the vibration Since the output stabilization time of the detection circuit 76 or the like is not required, it is possible to immediately perform photographing.

  (3) The lens-side MCU 75 prohibits the pull back operation and the joining operation while the user operates the distance ring 82. While the user operates the distance ring 82, the user changes the shooting angle of view, so that the vibration applied to the interchangeable lens 70 becomes extremely large, and errors and malfunctions are caused by the pull back operation and the joining operation. It can happen. For this reason, in order to prevent these problems, the lens side MCU 75 prohibits the pull back operation and the joining operation while the user operates the distance ring 82.

  (4) The lens-side MCU 75 performs an initial adjustment operation in response to the end of the operation of the distance ring 82 by the user. When the user finishes the operation of the distance ring 82, the user determines the shooting angle of view, and the vibration applied to the interchangeable lens 70 is small, and the malfunction is less when the initial adjustment operation is performed at this timing. For this purpose, the lens-side MCU 75 detects the operation of the distance ring 82 by the user, starts the initial adjustment operation and the vibration detection in response to the operation stop of the distance ring 82, and permits the pull-back operation and the joining operation. Yes.

(AF drive and vibration detection operation)
Next, an operation when AF driving is performed in the interchangeable lens according to the tenth embodiment of the present invention will be described. FIG. 40 is a flowchart for explaining an operation when AF driving is performed in the interchangeable lens according to the tenth embodiment of the present invention. FIG. 41 is a timing chart for explaining the operation when AF driving is performed in the interchangeable lens according to the tenth embodiment of the present invention. FIG. 40 shows the operation when AF driving is performed, extracted from a program incorporated in the lens side MCU 75. In the following, detailed description of the same steps as those shown in FIGS. 35 and 38 is omitted.

  In S6600, the lens side MCU 75 starts the interchangeable lens processing 3. The lens-side MCU 75 instructs the control signal generators 5d and 15d to output the control signal PC before starting the interchangeable lens processing 3, and the power supply circuits 4 and 14 are connected to the vibration detection circuit via the power supply line Vdd. Power is supplied to 76.

  In S6601, the lens side MCU 75 determines whether there is communication from the camera body. When there is communication from the camera body, the process proceeds to S6602, and when there is no communication from the camera body, the determination of S6601 is repeated.

  In S6602, the lens side MCU 75 communicates with the camera body.

  In S6603, the lens side MCU 75 determines whether or not an AF drive-related communication command is received from the camera body. When a communication command related to focusing lens driving is received from the camera body at t181, t183, t185, and t187 shown in FIG. 41, the process proceeds to S6604. When a communication command related to the focusing lens drive is not received from the camera body, the process returns to S6601, and the lens side MCU 75 repeats the processes after S6601.

  In S6604, the lens side MCU 75 determines whether or not the communication from the camera body is the AF driving stop. If the lens-side MCU 75 receives a drive stop command from the camera body at t183 and t187, the process proceeds to S6606. On the other hand, if the lens-side MCU 75 does not receive a drive stop command from the camera body (receives a forward drive command or a reverse drive command) at t181 and t185, the process proceeds to S6605.

  In step S <b> 6605, the lens side MCU 75 determines whether communication from the camera body is AF forward rotation driving. If the lens-side MCU 75 receives a forward drive command from the camera body at t181, the process proceeds to S6610. On the other hand, when the lens-side MCU 75 does not receive a forward rotation drive command from the camera body (receives a reverse rotation drive command) at t185, the process proceeds to S6614.

  In step S <b> 6606, the lens side MCU 75 stops the AF motor 81. The lens side MCU 75 controls the motor driving circuit 80 shown in FIG. 33 at t183, and the AF motor 81 stops driving the focusing lens 72.

  In S6607, the lens side MCU 75 starts an initial adjustment operation. The lens-side MCU 75 executes the processing of S3250 to S3221 shown in FIGS. 2 and 3 from t183 to t184.

  In S6608, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the interchangeable lens 70 at t184.

  In S6609, the lens side MCU 75 prohibits the pull back operation at t186. Then, the lens side MCU 75 repeats the processes after S6601.

  In S6610, the lens side MCU 75 rotates the AF motor 81 forward. The lens side MCU 75 controls the motor drive circuit 80 at t181, the AF motor 81 rotates forward, and the focusing lens 72 is extended.

  In S6611, the lens side MCU 75 starts an initial adjustment operation. The lens side MCU 75 executes the processes of S3250 to S3221 from t181 to t182.

  In step S6612, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the interchangeable lens 70 at t182.

  In S6613, the lens side MCU 75 prohibits the pull back operation at t182. Then, the lens side MCU 75 repeats the processes after S6601.

  In S6614, the lens side MCU 75 reversely rotates the AF motor 81. The lens side MCU 75 controls the motor drive circuit 80 at t185, the AF motor 81 is rotated in the reverse direction, and the focusing lens 72 is retracted.

  In S6615, the lens side MCU 75 starts an initial adjustment operation. The lens side MCU 75 executes the processes of S3250 to S3221 at t185 to t186.

  In S6616, the lens side MCU 75 starts vibration detection. The lens-side MCU 75 permits the vibration detection interrupt processing 4 and 5, and starts detection of vibration generated in the interchangeable lens 70 at t186.

  In S6617, the lens side MCU 75 prohibits the pull back operation at t186. Then, the lens side MCU 75 repeats the processes after S6601.

As described above, the interchangeable lens according to the tenth embodiment of the present invention has the following effects.
(1) The lens-side MCU 75 performs an initial adjustment operation in response to a drive start command for the focusing lens 72 from the camera body, and starts a vibration detection operation. After determining the shooting angle of view, the user starts driving the focusing lens 72 to focus, and starts shooting when the focus is achieved. Considering such a series of operations by the user, there is a high possibility that very large vibrations are applied to the interchangeable lens 70 before the focusing lens 72 is driven. If the initial adjustment operation is performed at a timing when a large vibration occurs before the focusing lens 72 is driven, there is a possibility that the adjustment error becomes large or malfunctions, and the initial adjustment operation cannot be performed. . The lens-side MCU 75 performs the initial adjustment operation in response to the start of driving of the focusing lens 72, assuming such a situation.

  (2) The lens-side MCU 75 performs an initial adjustment operation in response to a drive stop command for the focusing lens 72 from the camera body, and starts a vibration detection operation. Further, the lens-side MCU 75 prohibits the pull-back operation and the joining operation during the driving of the focusing lens 72, stops the driving of the focusing lens 72, and permits the pull-back operation and the joining operation. When the user operates the focusing lens 72 to focus, the user often does not determine the shooting angle of view, and the vibration applied to the interchangeable lens 70 is large. On the other hand, after the driving operation of the focusing lens 72, the user has decided the shooting angle of view and often starts shooting in a state where vibration applied to the interchangeable lens 70 is small. For this reason, there are fewer malfunctions when the driving of the focusing lens 72 is finished and the initial adjustment operation is performed after the vibration applied to the interchangeable lens 70 is reduced. The lens-side MCU 75 performs an initial adjustment operation when driving of the focusing lens 72 is stopped, and prohibits a pull-back operation and a joining operation while the focusing lens 72 is being driven.

(Other embodiments)
The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the equivalent scope of the present invention. Further, specific numerical values or circuit configurations are not limited to the numerical values or configurations given in the embodiments of the present invention.
(1) In the first embodiment of the present invention, the ratio of the resistors R4 and R5 is set to 1: 256. However, the ratio is not limited to this, and 1: 2 ^ k (k = 1, 2, 3). ,...) Can also be set to a known ratio. In this case, the ratio between the variable amount of each of the output signals Vda0 and Vda1 and the amount of influence of the output signals Vda0 and Vda1 on the change in the calculation output signal Vout is known. Therefore, the output signals Vda0 and Vda1 can be varied simultaneously to adjust the calculation output signal Vout without dividing the coarse adjustment operation of S3200 (S3250) to S3212 and the fine adjustment operation of S3213 to S2221. . As a result, the time required for processing when the vibration gyro 1 is turned on can be shortened.

  (2) The first and second embodiments of the present invention operate the output signal generator 7 to operate the output signal up to the reference voltage Vref (2.0 V) as shown in FIGS. Although Vout is pulled back or initially adjusted, it does not have to be accurately pulled back to 2.0V. The voltage to be pulled back is not limited to 2.0 V, and the voltage change amounts C and C ′ are set to arbitrary voltages so that they can be used more effectively according to the input range of the A / D converter 5a. Can be set. For example, the output dynamic range of the arithmetic output signal Vout can be used more effectively by pulling it back to the center of the output range of the operational amplifier OP2. Further, the voltage change amounts C and C ′ for changing the output signal Vda1 may be equal in absolute value or different from each other.

  (3) In the first and second embodiments of the present invention, the voltage for adjusting the calculation output signal Vout by the initial adjustment operation and the voltage for pulling the calculation output signal Vout by the pull back operation are set to 2.0V. The voltage can be changed to any voltage without changing the circuit. For example, the voltage value can be easily changed by changing the software of the MCU 5 or the lens side MCUs 55 and 75 corresponding to S3208 and S3216. For this reason, for example, even if the reference voltage Vref1 of the circuits 2 and 3 is biased above or below the output dynamic range of the calculation output signal Vout, the calculation output signal Vout can be adjusted as a voltage that does not depend on it. . As a result, the voltage value to which the calculation output signal Vout is adjusted when the power is turned on can be adjusted to the center of the output dynamic range in accordance with the output form of the circuit 3. By setting this voltage value at the center of the output range of the operational amplifier OP2, such as the circuits 2 and 3, the output dynamic range of the operational output signal Vout can be used more effectively. Further, the voltage value can be set so as to be an effective usable range in accordance with the input range of the A / D converter 5a. Furthermore, the problems concerning the output dynamic range of the vibration to be detected and the detection resolution can be solved somewhat.

  (4) In the first and second embodiments of the present invention, the D / A converters 7a and 7b and the like may be configured as a single IC. For example, the D / A converters 7a and 7b may be configured as one by a high resolution D / A converter of about 12 bits. When the calculation output signal Vout does not require adjustment accuracy, the D / A converters 7a and 7b may be configured by one inexpensive D / A converter, and the calculation output signal Vout may be adjusted to 2.0V. . Further, the operation signals S0 and S1 of the operation signal generator 5b do not have to be two types, and the output signals Vda0 and Vda1 of the two D / A converters 7a and 7b can be variably controlled by one operation signal. Good. Furthermore, although the D / A converter 7a is provided outside the MCU 5, it may be built in the MCU 5.

  (5) In the first and second embodiments of the present invention, the circuits 2 and 3 are configured based on the reference voltage Vref1 output from the vibrating gyroscope 1, but the output of the vibrating gyroscope 1 is not used. An appropriate potential may be applied from the outside. For example, the reference voltage Vref2 is supplied with an appropriate voltage by resistance voltage division, or the same voltage as the constant voltage regulator 6 is used. As shown in FIG. 9, these circuits are configured based on GND. May be.

  (6) In the first and second embodiments of the present invention, the high-frequency component not caused by vibration is removed from the vibration detection signal Vo by the low-pass filter configured by the circuit 2, but when the high-frequency noise can be ignored. These circuits may be omitted. For example, a circuit configuration in which the vibration detection signal Vo is directly input to the calculation unit 3 may be used.

  (7) In the third and fourth embodiments of the present invention, the circuits 12 and 13 are configured based on 0 V. For example, the reference voltage Vref1 output from the vibrating gyroscope 11 or a reference potential equivalent thereto A circuit as shown in FIG. In this case, in the third embodiment of the present invention, the voltage value pulled back by the ON operation of the analog switch SW10 is not 0V but a voltage of the reference voltage Vref1.

  (8) In the first, second, and fourth embodiments of the present invention, when the arithmetic output signal Vout exceeds the output range, the MCUs 5 and 35 or the lens side MCUs 55 and 75 are D / A converters. Although only 7b is variably controlled to generate the output signal Vda1, it is not limited to this. For example, both the D / A converters 7a and 7b may be variably controlled to generate the output signals Vda0 and Vda1.

  (9) In the fifth embodiment of the present invention, S4109 and S4111 may be omitted, and the pull back operation and the joining operation may be prohibited only during exposure. Also, after the half-push switch SW10 is turned off and at time t88 when the timer times out, the supply of power to the vibration detection circuit 36 is cut off, but counting is performed with something other than the timer built in the MCU 35. You can also For example, a half-press timer that turns on simultaneously with the on-operation of the half-press switch SW11 and maintains the on-operation for a certain period after the half-press switch SW11 is turned off may be used.

  (10) Although the fifth embodiment of the present invention has been described by taking as an example a camera that can perform a zooming operation by operating the zoom button 33, the zoom button provided on the body side drives the zoom lens on the lens side. The present invention can also be applied to an interchangeable lens.

  (11) In the tenth embodiment of the present invention, the vibration detection operation is performed by driving the focusing lens 72 in response to a communication command from the camera body. However, the present invention is not limited to this. For example, for a camera in which a photographing lens such as a compact camera, an electronic still camera, or a video movie in a silver salt camera is integrated, a vibration detection operation may be performed according to driving of the focusing lens. For example, an initial adjustment operation may be performed in accordance with the normal rotation or reverse rotation of the focusing lens to start the vibration detection operation, and the pull back operation and the joining operation may be prohibited. Further, in response to the stopping of the focusing lens, an initial adjustment operation may be performed to start a vibration detection operation and allow a pull back operation and a joining operation.

  (12) The tenth embodiment of the present invention has been described by taking the interchangeable lens 70 capable of AF driving as an example, but the present invention can also be applied to a camera capable of AF driving.

  (13) In the first to tenth embodiments of the present invention, the MCUs 5 and 15 and the lens side MCUs 55 and 75 perform interval interrupt processing, but may be continuous monitoring processing other than interval interrupt processing.

  (14) In the first to tenth embodiments of the present invention, the A / D converters 5a and 15a are incorporated in the MCUs 5, 15, and 35 and the lens side MCUs 55 and 75. The A / D converters 5a and 15a may be provided outside the lens side MCUs 55 and 75.

  (15) In the first to tenth embodiments of the present invention, the case where a piezoelectric vibration gyro that detects angular velocity and acceleration is used as an element for detecting vibration has been described as an example, but the present invention is limited to these. An angular acceleration sensor that detects angular acceleration may be used.

  (16) The first to tenth embodiments of the present invention are not limited to a still camera or a video movie. The fields of application of the present invention are wide-ranging and widely applied to the technical field of detecting vibrations. Can do.

  (17) In the second to tenth embodiments of the present invention, based on the two quantized values V (t−ts) and V (t−2ts) immediately before the pull back operation, the correction operation output signal Vout ′ ( The correction units 5c and 15c correct the t) by linear approximation using a linear function, but the present invention is not limited to this. For example, the correction operation output signal Vout ′ (t) is based on three or more quantized values V (t−ts), V (t−2ts), V (t−3ts),. Can be approximated with a quadratic or higher-order function to perform a highly accurate stitching operation.

  (18) In the second to tenth embodiments of the present invention, in S3609 and S3708, the determination is made based on the absolute value of the change amount of the quantized value V (t) and the quantized value V (t−ts). However, the determination method is not limited to this. For example, it can be determined by various methods such as time-differentiating the operation output signal Vout and determining whether the differential output is a predetermined value or less.

  (19) In the second to tenth embodiments of the present invention, when at least one of the determinations in S3607 to S3609 or S3706 to S3708 is not satisfied, the pull back operation and the joining operation are prohibited. However, the present invention is not limited to this. For example, the determination may be made according to one or a combination of these conditions.

  (20) In the second to tenth embodiments of the present invention, when the calculation output signal Vout exceeds the upper level H in S3611, S3711, the number of pullbacks Np is set to +1, and the calculation output signal Vout is decreased. When the level L on the side is exceeded, the number of pullbacks Np is set to −1. However, the present invention is not limited to this. For example, when the arithmetic output signal Vout exceeds the levels H and L, the pullback count Np is set to +1, and in S3608 and S3707, it is determined whether or not the pullback count Np is equal to or less than a predetermined value (positive number). May be.

It is a figure which shows the vibration detection circuit in the vibration detection apparatus which concerns on 1st Embodiment of this invention. It is a flowchart for demonstrating rough adjustment operation | movement when a power supply is supplied to the vibration detection apparatus which concerns on 1st Embodiment of this invention. It is a flowchart for demonstrating the fine adjustment operation | movement when a power supply is turned on to the vibration detection apparatus which concerns on 1st Embodiment of this invention. It is a timing chart when a vibration detection apparatus according to the first embodiment of the present invention is turned on. It is a flowchart for demonstrating operation | movement when the vibration exceeding an output range is applied to the vibration detection apparatus which concerns on 1st Embodiment of this invention. It is a timing chart for demonstrating operation | movement when the vibration exceeding an output range is applied to the vibration detection apparatus which concerns on 1st Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the vibration exceeding an output range is applied to the vibration detection apparatus which concerns on 2nd Embodiment of this invention. It is a timing chart for demonstrating the pullback operation | movement and the joining operation | movement in the vibration detection apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the vibration detection circuit in the vibration detection apparatus which concerns on 3rd Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the vibration exceeding an output range is applied to the vibration detection apparatus which concerns on 3rd Embodiment of this invention. It is a figure which shows a part of vibration detection circuit in the vibration detection apparatus which concerns on 4th Embodiment of this invention. It is a block diagram which shows the camera which concerns on 5th Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the vibration which exceeds an output range is applied to the camera which concerns on 5th Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the release button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a timing chart for demonstrating operation | movement when the release button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a flowchart for demonstrating operation | movement when the zoom button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a timing chart for demonstrating operation | movement when the zoom button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a flowchart for demonstrating operation | movement when the release button in the camera which concerns on 5th Embodiment of this invention is half-pressed by the user. It is a timing chart for demonstrating operation | movement when the release button in the camera which concerns on 5th Embodiment of this invention is half-pressed by the user. It is a flowchart for demonstrating operation | movement when the main button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a timing chart for demonstrating operation | movement when the main button in the camera which concerns on 5th Embodiment of this invention is operated by the user. It is a flowchart for demonstrating operation | movement when the vibration which exceeds an output range is applied to the camera which concerns on 6th Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the release button in the camera which concerns on 6th Embodiment of this invention is half-pressed by the user. It is a timing chart for demonstrating operation | movement when the release button in the camera which concerns on 6th Embodiment of this invention is half-pressed by the user. It is a block diagram which shows the camera system which concerns on 7th Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the body side MCU in the camera system which concerns on 7th Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the lens side MCU in the camera system which concerns on 7th Embodiment of this invention. It is a timing chart for demonstrating operation | movement when power is supplied from the camera body side in the camera system which concerns on 7th Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the lens side MCU in the camera system which concerns on 8th Embodiment of this invention. It is a timing chart for demonstrating operation | movement when communication is received from the camera body side in the camera system which concerns on 8th Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the lens side MCU in the camera system which concerns on 9th Embodiment of this invention. It is a timing chart for demonstrating operation | movement when communication is received from the camera body side in the camera system which concerns on 9th Embodiment of this invention. It is a block diagram which shows the interchangeable lens which concerns on 10th Embodiment of this invention. It is a flowchart for demonstrating operation | movement when the zoom ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated by the user. It is a flowchart for demonstrating operation | movement when the zoom ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated. It is a timing chart for demonstrating operation | movement when the zoom ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated. It is a flowchart for demonstrating operation | movement when the distance ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated by the user. It is a flowchart for demonstrating operation | movement when the distance ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated. It is a timing chart for demonstrating operation | movement when the distance ring in the interchangeable lens which concerns on 10th Embodiment of this invention is operated. It is a flowchart for demonstrating operation | movement when AF drive is performed in the interchangeable lens which concerns on 10th Embodiment of this invention. It is a timing chart for demonstrating operation | movement when AF drive is performed in the interchangeable lens which concerns on 10th Embodiment of this invention. It is a circuit diagram which shows the vibration detection circuit in the conventional vibration detection apparatus. It is a timing chart when a power supply is turned on to the conventional vibration detection apparatus.

Explanation of symbols

1,11,100 Vibrating gyro 2,12,200 circuit (low-pass filter circuit)
3 circuits (addition amplification circuit)
13,300 circuit (high-pass filter circuit and amplifier circuit)
4,14,400 Power supply circuit 5,15,35 MCU
5a, 15a, 500a A / D converter 5b, 15b, 500b Operation signal generator 5c, 15c Correction unit 5d, 15d, 500d Control signal generator 6 Constant voltage regulator 7 Output signal generator 7a, 7b D / A converter DESCRIPTION OF SYMBOLS 30 Camera 31 Release button 32 Main button 33 Zoom button 36,56,76 Vibration detection circuit 37 Exposure circuit 38 Zoom drive circuit 39 Zoom drive mechanism part 40,71,72,73,74 Zoom lens (shooting lens)
50 Camera body 51, 70 Interchangeable lens 52 Digital power supply circuit 53 Body side MCU
54 Power system power circuit 55, 75 Lens side MCU
70a, 70b Output signal level variable section 72 Focusing lens (photographing lens)
77 Distance encoder 78 Zoom encoder 80 Motor drive circuit 81 AF motor 82 Distance ring 83 Zoom ring SW10, SW100 Analog switch SW11 Half-press switch SW12 Full-press switch SW13 Main switch SW14 Zoom-up switch SW15 Zoom-down switch Vo Vibration detection signal Vout Calculation output Signal Vout 'Correction calculation output signal Vda0, Vda1 Output signal SSW, S0, S1 Operation signal

Claims (24)

A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
A control unit that variably controls the level of the output signal based on the arithmetic output signal;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
Including an external operation detection unit that detects an external operation,
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level in accordance with an operation start or operation end detected by the external operation detection unit.   The camera according to claim 1, wherein the external operation detection unit detects a half-press operation of a release button, an operation of a start button or an operation of a zoom button, and the control unit starts a half-press operation of the release button, A camera characterized in that the initial adjustment is performed in response to start of operation of a start button, start of operation of a zoom button, or end of operation of a zoom button.   The camera according to claim 1 or 2, further comprising a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit detects the vibration in response to detection of an operation start by the external operation detection unit. A camera characterized by causing the power supply unit to start supplying power to the detection unit and performing the initial adjustment.   4. The camera according to claim 1, further comprising: a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit detects an operation end by the external operation detection unit. 5. Then, after a predetermined time has elapsed, the power supply unit stops the power supply to the vibration detection unit. A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
Wherein when the operation output signal exceeds a predetermined range, a control unit for variably controlling the level of said output signal,
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level according to an internal operation.   6. The camera according to claim 5, wherein the control unit performs the initial adjustment before or after the focusing operation is started or the focusing operation is completed or before the zooming operation is started.   7. The camera according to claim 5, further comprising a power supply unit that supplies power to at least the vibration detection unit, and the control unit supplies power to the vibration detection unit before starting an internal operation. And starting the power supply unit to perform the initial adjustment.   The camera according to any one of claims 5 to 7, further comprising a power supply unit that supplies power to at least the vibration detection unit, and the control unit is configured to pass a predetermined time after the internal operation ends. The camera is characterized in that supply of power to the vibration detection unit is stopped by the power supply unit. In interchangeable lenses that can be attached to the camera body,
A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
A control unit that variably controls the level of the output signal based on the arithmetic output signal;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
Including an external operation detection unit that detects an external operation,
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The interchangeable lens, wherein the control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level according to an operation start or operation end detected by the external operation detection unit.   10. The interchangeable lens according to claim 9, wherein the external operation detection unit detects an operation of a distance ring or a zoom ring, and the control unit starts operation of the distance ring or the zoom ring or the distance ring or the zoom. An interchangeable lens, wherein the initial adjustment is performed in accordance with the end of the operation of the ring.   The interchangeable lens according to claim 9 or 10, further comprising a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit is configured to detect the operation start by the external operation detection unit. An interchangeable lens, wherein the power supply unit starts power supply to a vibration detection unit and performs the initial adjustment.   12. The interchangeable lens according to claim 9, further comprising: a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit is configured to terminate the operation by the external operation detection unit. An interchangeable lens, wherein after a predetermined time has elapsed after detection, the power supply unit stops the supply of power to the vibration detection unit. In interchangeable lenses that can be attached to the camera body,
A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
A control unit that variably controls the level of the output signal based on the arithmetic output signal;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level according to an internal operation.   14. The interchangeable lens according to claim 13, wherein the control unit performs the initial adjustment in response to a focusing operation start or a focusing operation end. 15.   15. The interchangeable lens according to claim 13 or 14, further comprising a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit supplies power to the vibration detection unit before starting an internal operation. An interchangeable lens, wherein supply is started by the power supply unit and the initial adjustment operation is performed.   16. The interchangeable lens according to claim 13, further comprising: a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit passes a predetermined time after the internal operation ends. After that, the power supply unit stops the power supply to the vibration detection unit, and the interchangeable lens is characterized in that In interchangeable lenses that can be attached to the camera body,
A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
A control unit that variably controls the level of the output signal based on the arithmetic output signal;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The interchangeable lens, wherein the control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level in response to power-on from the camera body side. In interchangeable lenses that can be attached to the camera body,
A vibration detector that detects vibration and outputs a vibration detection signal;
An output signal generator for generating an output signal;
Based on the vibration detection signal and the output signal, a calculation unit that performs a predetermined calculation and generates a calculation output signal;
A control unit that variably controls the level of the output signal based on the arithmetic output signal;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by a variable operation by the control unit before and after the change;
The control unit samples the calculation output signal,
The correction unit approximates based on the level of the arithmetic output signal at at least two times sampled before the variable operation and the level of at least one arithmetic output signal sampled after the variable operation, Calculate the corrected output signal,
The control unit initially adjusts the calculation output signal to a predetermined reference level or in the vicinity of the predetermined reference level according to communication from the camera body side.   19. The interchangeable lens according to claim 18, wherein the control unit performs the initial adjustment according to a predetermined communication command from the camera body side.   20. The interchangeable lens according to claim 17, further comprising: a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit performs the vibration before the initial adjustment. An interchangeable lens, comprising: causing the power supply unit to start supplying power to the detection unit. A vibration detector that detects vibration and outputs a vibration detection signal;
Based on the vibration detection signal, performs a predetermined calculation , generates a calculation output signal, and initializes the calculation detection signal ;
When the calculation output signal exceeds a predetermined range, a controller that operates the initialization unit to pull the calculation output signal back into the predetermined range;
A correction unit that generates a correction output signal by connecting the operation output signals whose levels have been changed by the pull back operation by the control unit before and after the change ,
The control unit samples the calculation output signal,
The correction unit approximates the correction based on the level of the calculation output signal at least two times sampled before the pull back operation and the level of at least one calculation output signal sampled after the pull back. Calculate the output signal,
The control unit operates the initialization unit when the correction output signal exceeds a predetermined range, when the pull-back operation exceeds a predetermined number of times, or when the change amount of the vibration detection signal exceeds a predetermined amount. The vibration detection device, wherein the calculation output signal is adjusted to a predetermined reference level or the vicinity thereof.   23. The vibration detection apparatus according to claim 21, further comprising a power supply unit that supplies power to at least the vibration detection unit, wherein the control unit is configured to perform the initialization unit in response to the start of power supply to the vibration detection unit. And adjusting the calculation output signal at or near a predetermined reference level.   23. The vibration detection device according to claim 21, wherein the initialization unit includes a high-pass filter that removes a low-frequency component from the vibration detection signal, and an amplification unit that amplifies the output of the high-pass filter. When the output of the amplifying unit exceeds a predetermined range, the control unit operates the initialization unit to bring the output of the amplifying unit back into the predetermined range.   24. The vibration detection device according to claim 21, wherein the vibration detection unit is an angular velocity detector that detects angular velocity, an angular acceleration detector that detects angular acceleration, or an acceleration that detects acceleration. A vibration detector characterized by being a detector.

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