JPH0437622B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic camera that records still image information on a disk for recording information signals, such as a magnetic disk, and particularly to an electronic camera that captures images using a self-timer.

This type of electronic camera has an imaging unit equipped with a solid-state image sensor such as a CCD that converts a subject image incident on the camera body into an electrical signal through an optical lens, and image information from this imaging unit is transferred to the camera. It consists of a recording section for recording on a magnetic disk in a disk camera attached to the main body. The imaging section and recording section are controlled to be synchronized by a reference clock pulse from a reference signal oscillation circuit.

Capturing a subject image using this electronic camera is as follows:
This is done by keeping the magnetic disk in a constant speed rotation state and recording the image information taken into the imaging section onto recording tracks formed concentrically on the magnetic disk using a magnetic head provided in the recording section.

Note that the image information is recorded for each field on one recording track.

In order to reliably record one field's worth of image information on one recording track, it is necessary to rotate the magnetic disk at a constant speed and phase. Therefore, in electronic cameras, a servo circuit controls the rotational speed and phase of a motor that rotates a magnetic disk so that it is synchronized with a reference clock pulse output from a reference signal oscillation circuit.

After the motor starts rotating and the speed servo and phase servo are locked to predetermined values by the servo circuit, that is, after the magnetic disk is driven to rotate at a predetermined rotation speed and phase,
The optical system shutter is opened to capture images.

The state from startup to steady rotation of the motor that rotationally drives this magnetic disk will be explained using FIG. 1. In FIG. 1, the vertical axis represents the rotational speed V and the phase P, and the horizontal axis represents the time t.

In FIG. 1, when the motor starts rotating at time _t0 , the motor changes speed V and phase P over time, as shown by curve A in the figure.
approaches the predetermined values V ₁ , P ₁ and reaches the predetermined values V ₁ , P ₁ at time t ₁ after a predetermined time has elapsed. Then, the motor has a rotational speed V and a phase P of a predetermined value.
When V ₁ and P ₁ are reached, the servo is locked by the servo circuit and rotates while maintaining a steady state. Therefore, in an electronic camera, after the motor starts rotating, the rotation speed V and phase P reach the predetermined values V ₁ and P ₁ after a certain period of time, and the servo reaches a steady rotation state where it is locked. , the optical system shutter is opened to take an image.

However, the time from the start of the motor to the steady rotation state is not constant due to the degree of consumption of the battery that drives the motor and external disturbances such as vibrations of the camera. For example, as shown by curve B in FIG. 1, a delay may occur compared to the start-up state shown by A in FIG. 1, in which the motor rotates normally. Further, as shown by curve C in FIG _.
There is also a risk that disturbance will occur until P ₁ is reached and the servo will not be able to lock. In a case where the rotation of the motor is started in the state shown by curves B and C in FIG. 1, when the shutter is operated and imaging is performed at time _t1 in FIG. It is no longer possible to record one field's worth of image information on the recording track of a book in an appropriate state, and when this recorded image information is reproduced, distortion or the like occurs in the reproduced image obtained.

By the way, when taking images only by operating the release switch provided on the camera body without using a self-timer, operate the release switch once to start up the motor, and then allow the motor to rotate in a steady state. After the servo is locked by the servo circuit, proper imaging can be easily achieved by allowing the release switch to be operated.

However, when taking images using a self-timer, when the lever for setting the self-timer is operated, the motor for driving the rotation of the magnetic disk starts rotating, and after a certain period of time set by the self-timer has elapsed. , the shutter is automatically opened and images are taken. Therefore,
When the timer time set by the self-timer is set as _t2 in Fig. 1, after the timer time _t2 elapses, whether or not the rotational speed V and phase P of the motor reach the predetermined values _V1 , _P1. Regardless of whether
In other words, imaging is performed regardless of whether or not the servo is locked by the servo circuit. As a result, it may become impossible to record image information in an appropriate state.

Therefore, the present invention makes it possible to record image information in an appropriate state in an electronic camera that uses a self-timer and automatically records image information after a certain period of time set by the self-timer has elapsed. This was proposed for the purpose of achieving this.

In order to achieve the above object, a first invention provides an electronic camera that operates a self-timer and then operates a shutter after a predetermined time to perform an imaging operation and record the captured image on a disk. servo means for applying a servo to the drive means for rotationally driving the servo means; servo state detection means for detecting the servo state by the servo means;
Warning generating means for generating a warning signal when the servo state detecting means detects that the servo is not locked after a predetermined period of time has elapsed since the self-timer was activated. It is.

Further, a second invention is an electronic camera that operates a shutter after a predetermined time after operating a self-timer to perform an imaging operation, and records the captured image on a disk, in which a drive for rotationally driving the disk is provided. A servo means for applying a servo to the self-timer, a servo state detecting means for detecting a servo state by the servo means, and a servo state detecting means for detecting that the servo is locked after a predetermined period of time has elapsed since the self-timer was operated. control means for detecting the servo state again by the servo state detection means after a predetermined period of time has elapsed when it is detected that there is no shutter, and for operating the shutter when the servo is locked. This is what I did.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

This embodiment is an electronic camera that uses a self-timer to operate the shutter after a predetermined period of time and records image information of the subject on a magnetic disk. When the shutter is activated, the rising state of the speed servo and phase servo of the magnetic disk is detected and a warning signal is issued prior to the operation of the shutter. It is something to do.

Hereinafter, a configuration for realizing the above-mentioned operating principle will be explained using a logic circuit shown in FIG.

Reference numeral 1 designates a ground-type release switch that is operated in conjunction with a shutter operation button (not shown). This grounded release switch 1 supplies a switch signal SwP to a set terminal of a flip-flop circuit 3 via an inverter 2. The flip-flop circuit 3 has a first AND gate 4.
provides a positive output signal QP. Further, 5 is an oscillator, and this oscillator 5 outputs a clock pulse of a predetermined frequency, and the above-mentioned first AND/
The clock pulse G ₁ is supplied to the counter 6 via the gate 4 .

This counter 6 counts the clock pulse _G1 for a set predetermined time, and when the predetermined time elapses, it outputs the counter signal CuP to the second and third clock pulses.
Supplies to AND gates 7 and 8.

The block indicated by the dashed line in FIG. 3 constitutes a timer circuit 9 which outputs the counter signal CuP when a predetermined set time has elapsed after the switching operation of the release switch 1.

On the other hand, 10 is a servo detection circuit that detects the rising state of each servo of a speed servo circuit 12 and a phase servo circuit 13 that control the speed and phase of the drive circuit 11 that drives the motor M.

Then, the output signal SP of the servo detection circuit 10
is supplied to the second AND gate 7, and is also supplied to the third AND gate 7 via the inverter 14.
It is supplied to gate 8.

Then, the gate signal _G2 of the second AND gate 7 converts the release signal ReP into the shutter circuit 1.
5, and an OR gate 17.

Further, the gate signal _G3 of the third AND gate 8 is supplied to the warning circuit 18 which issues a warning by blinking a lamp, etc., and to the OR gate 17.

Then, the gate signal G ₃ of the OR gate 17
is supplied to a delay circuit 21, and the output signal _MM2 of this delay circuit 21 is supplied within the timer circuit 9 to the reset terminal of the flip-flop circuit 3.

The operation of the logic circuit configured as described above will be explained below using the time chart shown in FIG.

First, a case in which the servo rises and is locked before the elapse of a predetermined time will be described with reference to FIG. 4A.

Turn on release switch 1 at arbitrary time _t3
Then, the flip-flop circuit 3 of the timer circuit 9 is set by the rise of the switch signal SwP obtained from the release switch 1. Then, the positive output signal of the flip-flop circuit 3
QP opens the first AND gate 4.

This causes the first AND gate 4 to pass the clock pulse from the oscillator 5 during the period when the gate is opened by the positive output signal QP, and causes the counter 6 to receive the gate signal G ₁ of the clock pulse. supply. This counter 6 counts the gate signal _G1 for a predetermined time, and outputs the counter signal CuP at time _t4 when the predetermined time has elapsed.

On the other hand, the servo detection circuit 10 outputs a logic "1" indicating that each servo has risen and is locked.
This servo lock signal SP opens the gate of the second AND gate 7, and the inverted output NP of the servo lock signal SP opens the third AND gate 8. Close the gate.

That is, when the speed servo and phase servo are locked, the second AND gate 7 is opened, and when the servos are not locked, the third AND gate 8 is opened. .

Therefore, if the servo is locked before the predetermined time set in the timer has elapsed, the counter signal CuP from the timer circuit 9 becomes the second counter signal CuP.
AND gate 7 and if the servo is not locked before the predetermined time elapses, the third
Pass through AND gate 8.

In other words, each of the above AND gates 7 and 8 is G ₂ = CuP・SP ……(1) G ₃ = CuP・NP (NP=)
...(2) The gate signals G ₂ and G ₃ expressed by the following formula are selectively output.

Therefore, if the servo is locked at any time _t5 before the predetermined time elapses, the counter signal CuP output from the timer circuit 9 will be
Passes through AND gate 8 and connects to release circuit 16.
It is input to OR gate 17. The release circuit 16 then supplies the shutter circuit 15 with a release signal ReP. At the same time, the shutter circuit 15 opens the shutter and performs imaging.

Further, the gate signal G ₂ outputted from the second AND gate 8 is supplied to the delay circuit 21 via the OR gate 17, and further
is its output signal at time t ₆ after a delay of a predetermined time.
_MM2 is supplied to the flip-flop circuit 3 to perform a reset.

Next, a case where the servo is not locked at time _t4 after a predetermined time has elapsed will be explained with reference to FIG. 4B.

As mentioned above, at any time _t3 , switch 1 is turned on.
When turned ON, the timer circuit 9 outputs the counter signal CuP at the time point _t4 when a predetermined time has elapsed.

When the servo is not locked, the servo lock signal of the servo detection circuit 10 is
Since SP is in a LOW state (logic "0"), its inverted output signal NP becomes a high state (logic "1") and the gate of the third AND gate 8 is opened.

Therefore, if the servo rises and is not locked before the predetermined time elapses, the counter signal CuP output from the timer circuit 9 passes through the third AND gate 8. The warning circuit 18 to which this gate signal _G3 is supplied issues a warning by flashing a warning light, buzzer, etc. to notify the photographer that the conditions are not met.

At the same time, the gate signal G ₃ is OR gate 17
and the flip-flop circuit 3 is reset via the delay circuit 21 at time _t6 .

As described above, the embodiment of the present invention prevents incomplete imaging by not performing imaging if the motor is not in a predetermined rotational state at the elapse of a set time _t4 . It is.

In the above-described embodiment, when manually capturing an image without using a self-timer, the release switch 1 is switched to manual mode, and the switch signal SwP is changed to the second,
It is directly supplied to the third AND gate 7,8. This point also applies to the embodiments described later.

Next, other embodiments according to the present invention are shown in FIGS. 5 and 6.
This will be explained using figures.

First, before describing the specific configuration, the operating principle of this embodiment will be explained.

That is, this embodiment uses an electronic camera that uses a self-timer to operate the shutter after a predetermined period of time and records image information of the subject on a magnetic disk. When operating the shutter, the rotational speed of the magnetic disk and the start-up state of the phase servo are detected prior to the operation of the shutter, and if the servo has not started, the magnetic disk is restarted after a predetermined period of time has elapsed. An image is taken by detecting the rise of the servo and operating the shutter when the rotational speed and phase of the magnetic disk are appropriate.

The specific configuration of this embodiment will be explained below using the logic circuit shown in FIG.

A timer circuit 30 has the same configuration and function as the timer circuit 9 in the embodiment described above.

That is, the timer circuit 30 is a grounded release type.
switch 31, inverter 32, inverter 3
a first flip-flop circuit 33 for gating the first AND gate 34 by supplying a positive output signal GP ₁ to the first AND gate 34 triggered by a positive input signal SwP according to the flip-flop circuit 33;
An oscillator 35 that outputs a clock pulse of a predetermined frequency, a first AND gate 34 that opens the gate using this clock pulse and the positive output signal QP ₁ , and a gate signal G ₁ output by the first AND gate 34 is measured. It is composed of a counter 36 that outputs a counter signal CuP when clock pulses for a predetermined period of time are measured, and outputs the counter signal CuP when a predetermined period of time has elapsed from the switching operation of the release switch 31. It is.

The counter signal CuP from the timer circuit 30 is input to the set terminal of the second flip-flop circuit 37, and this flip-flop circuit 37 sends the positive output signal QP ₂ to the second and third flip-flop circuits.
Supplied to AND gates 38 and 39.

Further, 40 is a servo detection circuit, and a control circuit 4
The control state of the motor rotation speed and phase according to No. 1 is detected, and a servo lock signal SP is output when the motor rotation speed servo and phase servo are locked. This servo lock signal SP is
An inverted output signal NP of the servo lock signal SP, which is supplied to the AND gate 38 and obtained via the inverter 42, is supplied to a third AND gate circuit 39.

The gate signal _G3 output from the third AND gate 39 is sent to the warning circuit 43.
supplied to

Further, the gate signal G ₂ outputted from the second AND gate 38 is supplied to a release circuit 44, and this release circuit 44 supplies a shutter circuit 45 with a release signal ReP.

Further, the gate signal G ₂ is supplied to a delay circuit 48 formed by connecting two mono-multi circuits 46 and 47 in series with different time constants.

The output signal MM ₂ of the delay circuit 48 is applied to the first and second flip-flop circuits 3
It is input to reset terminals 3 and 37.

Below, the operation of the logic circuit having the above configuration will be explained in the sixth section.
This will be explained using the time chart shown in the figure.

First, a case where the rotational speed servo and phase servo of the motor are locked before a predetermined period of time has elapsed will be described with reference to FIG. 6A.

Release switch 31 at any time _t3
By turning on, the switch signal SwP is supplied to the first flip-flop circuit 33.

The first flip-flop circuit 33 is set by the switch signal SwP and supplies its positive output signal QP ₁ to the first AND gate circuit 34 .

Then, the first AND gate 34 resets the first flip-flop circuit 33 with the signal MM ₂ delayed by the delay circuit 48 from the time _{t 3} based on the affirmative output signal QP 1 . The gate remains open until time t ₆ .

Also, at this time, the first AND gate 34 is supplied with a clock pulse transmitted from the oscillator 35. This clock pulse therefore passes through the gate of the first AND gate 34 while it is gated by the positive output signal _QP1 .

The gate signal _G1 output from the first AND gate 34 is supplied to a counter 36, which receives the gate signal G1 for a predetermined period of time.
Count G ₁ and send a counter signal at t ₄ when a predetermined time elapses.
Output CuP. This counter signal CuP triggers the second flip-flop circuit 37, which in turn sends the positive output signal QP ₂ to the second and third AND gates 38, 39.
supply to.

Also, the servo detection circuit 40 detects when the motor rotational speed servo and phase servo are locked _.
The servo lock signal SP is output to the third
The gate of the AND gate 39 is closed and the gate of the second AND gate circuit 38 is opened.

Therefore, when the servo is locked at the elapse of the predetermined time _t4 , the positive output signal _QP2 output from the second flip-flop circuit 38 is
The gate signal G ₂ that has passed through the AND gate 38 is supplied to the release circuit 44 . and,
This release circuit 44 outputs a release signal ReP, and a shutter circuit 43 performs a shutter operation.
Imaging is performed by supplying the release signal ReP to.

Further, the gate signal G ₂ is supplied to the delay circuit 48
At time _t6 , the first and second flip-flop circuits 33 and 34 are reset after a predetermined time has elapsed.

Next, a case will be explained in which the servo is locked after a predetermined time set in the timer has elapsed.

An affirmative output signal is output from the second flip-flop circuit 37 at a predetermined time _t4 after the switching operation of the release switch 31 at an arbitrary time _t3 .
QP ₂ is output, and this positive output signal QP ₂ is the second,
A third AND gate 38,39 is supplied.

At this time, the servo of the motor starts up and if it is not locked, the servo detection circuit 40
does not output the servo lock signal SP, so the gate of the third AND gate 39 is opened by the inverted output signal NP of the servo lock signal SP.

Therefore, the time t ₄ when the set predetermined time has elapsed
The positive output signal QP ₂ passes through the third AND gate 39, and the gate signal G ₃ outputted from the AND gate 39 causes the warning circuit 4 to pass through the third AND gate 39.
3 is activated and sends a warning.

Then, when the servo is locked at _t7 after a predetermined time has elapsed, the servo detection circuit 40 outputs a servo lock signal SP, closes the third AND gate 39, and closes the second AND gate 3.
Open gate 8. Therefore, at this time, the positive output signal QP ₂ output from the second flip-flop circuit 37 passes through the second AND gate 38.
The gate signal _G2 that has passed through the second AND gate 38 operates the release circuit 45 described above to perform imaging, and at the time t8, the gate signal G2 operates the release circuit 45 described above, and at the time _t8 , the gate signal G2 passes through the first and second flip-flop circuits 33, 3.
Reset 7.

As described above, according to this embodiment, after a predetermined period of time has elapsed, the second,
By opening the third AND gates 38 and 39, imaging can be performed as soon as the servo rises after a predetermined period of time has elapsed.

Next, another embodiment according to the present invention will be described using FIGS. 7 to 9.

First, before describing the specific configuration, the operating principle of this embodiment will be outlined.

That is, in the above-described embodiment, imaging was attempted immediately after the servo was locked after a predetermined period of time had elapsed, but in this embodiment, as shown in the flow chart of FIG. After the time has elapsed, images are taken at a fixed timing (every second in this example), and if the motor servo is not locked even after waiting 10 seconds after the elapse of the predetermined time, the process is canceled at that point. do.

Hereinafter, a specific configuration of an embodiment that performs the above operation will be explained using a logic circuit shown in FIG.

In this embodiment, the timer circuit 50 is activated after a predetermined period of time has elapsed since the ON operation of the grounded release switch 51, and every second for 10 seconds (total) from that point on.
11 times).

The grounded release switch 51 flips the switch signal SwP through an inverter 52.
It is input to the set terminal of the flop circuit 53. The flip-flop circuit 53 supplies its positive output QP to the first AND gate 54.

An oscillator 55, which generates clock pulses at a predetermined frequency, supplies the clock pulses to the first AND gate 54.

The gate signal G ₁ output from the first AND gate 54 is input to the counter 56 . This counter 56 is a programmable counter, and counts the gate signal _G2 for a preset predetermined time, and when the predetermined time elapses, the counter signal CuP is sent to the second and third AND gates 57 and 58. and continues to output the counter signal CuP at 1 second intervals after the predetermined time has elapsed. Then, after a predetermined period of time has elapsed, a counter signal is sent to the OR gate 59 at a further 10 seconds.
Supply CuP.

Further, the servo detection circuit 60 outputs a servo lock signal SP when the rotational speed servo and phase servo of the motor are locked by the motor servo circuit 61, as in the embodiment described above. This servo lock signal SP is supplied to the second AND gate 57, and is also supplied to the inverter 62.
The inverted output signal NP of the servo lock signal SP obtained through the servo lock signal SP is supplied to a third AND gate 58.

The gate signal G ₃ output from the third AND gate 58 is supplied to the warning circuit 63.

Further, the gate signal G ₂ outputted from the second AND gate 57 is supplied to the release circuit 65 which supplies the release signal ReP to the shutter circuit 64, and to the OR gate 59.

The gate signal G ₄ outputted from the OR gate 59 is sent to the two mono multi-circuits 66 and 6.
7 connected in series to form a delay circuit 68. Furthermore, the output signal MM ₁ of this mono/multi circuit 66
is supplied to a second mono/multi circuit 67.

Note that the time constant of the first mono/multi circuit 66 is 1 second or less.

The output signal MM ₂ of the delay circuit 68 is input to the reset terminal of the flip-flop circuit 53.

The operation of the logic circuit having the above configuration will be explained using the time chart shown in FIG.

First, a case where the rotational speed servo and phase servo of the motor are locked before a predetermined period of time has elapsed will be described with reference to FIG. 9A. In this case, the shutter is opened when the predetermined time period has elapsed and imaging is performed, similar to the case in the embodiment described above.

That is, at an arbitrary time _t3 , the flip-flop circuit 53 is triggered and set by the rise of the switch signal SwP obtained via the inverter 52. The positive output signal QP ₁ of this flip-flop circuit 53 opens the gate of the first AND gate 54 . At the same time, oscillator 55
clock pulse and its gate signal
G ₁ is supplied to programmable counter 56.
This programmable counter 56 counts the gate signal _G1 for a predetermined period of time, and outputs a counter signal CuP at the elapse of the predetermined period of time _t4 . Also, at this time _t4 , the gate of the second AND gate 57 is opened by the servo lock signal SP, so the counter signal CuP is
passes through the AND gate 57, and this second AND gate
The release circuit 65 is operated by the gate signal _G2 of the gate 57. Then, the shutter circuit 64 is activated by the release signal ReP output from the release circuit 65 to perform imaging.

At the same time, the gate signal G ₂ of the second AND gate 57 is input to the delay circuit 68 via the OR gate 59, and the output signal MM 2 delayed by the delay circuit 68 causes the gate signal G ₂ to be output after a predetermined time has elapsed. ₆
Then, the flip-flop circuit 53 is reset.

Incidentally, since the time constant of the first mono/multi circuit 66 is 1 second or less in this embodiment, the flip-flop circuit 53 is reset before the next counter signal CuP is output from the counter 56. Therefore, a single switching operation does not result in multiple imaging operations.

Next, a case will be explained in which the servo is locked after a predetermined time set in the timer has elapsed.

That is, since the servo is not locked at the time point _t4 when the predetermined time elapses, the servo detection circuit does not output the servo lock signal SP, and therefore,
The gate of the third AND gate 58 is opened by the inverted output NP of the servo lock signal SP. Therefore, the counter signal CuP output at time _t4 after a predetermined period of time has passed is the third AND gate 5.
8, and a warning circuit to which this gate signal _G3 is supplied issues a warning.

Furthermore, if the servo is not locked by the time the counter signal CuP is output again after one second, the above-mentioned warning is issued again.

Then, if the motor servo is not locked when the 11th counter signal CuP is output, that is, 10 seconds have elapsed after the set predetermined time _t4 , the 11th counter signal CuP is OR. is supplied to gate 59, and this OR・
Gate signal G ₄ output from gate 59 resets flip-flop circuit 53 via delay circuit 68.

Also, when a few seconds have passed after the predetermined time has elapsed,
When the servo is locked at _t9 , the servo detection circuit 60 outputs the servo lock signal SP, which opens the second AND gate 57 and opens the third AND gate 58.
gate will be closed.

Therefore, for example, the second counter signal CuP
After output (that is, after the set predetermined time has elapsed)
When the servo is locked after another 2 seconds have elapsed, the third counter signal CuP is the second AND/
Since the gate 57 is open, this AND gate 57 outputs the gate signal _G2 .

This gate signal _G2 is then supplied to the release circuit to perform imaging, and is also sent to the flip gate via the OR gate 59 and the delay circuit 68.
The flip circuit 53 receives the flip signal at time _t10 before outputting the fourth counter signal CuP.
This resets the flop circuit 53.

As described above, according to the present invention, when performing imaging using a self-timer, the rising state of the motor rotation speed servo and phase servo is detected before opening the shutter, and the motor rotation state is determined to be appropriate. Since the shutter is opened and imaging is performed only when the state is maintained, image information can always be recorded in a proper state on the recording track formed on the magnetic disk, and there is no failure in imaging.

[Brief explanation of drawings]

FIG. 1 is a waveform diagram showing the rising state of the motor rotational speed servo and phase servo, FIG. 2 is a flow chart showing the operation of the embodiment according to the present invention, FIG. 3 is a logic circuit diagram, and FIG. The figure is a time chart showing the operating state of the logic circuit shown in Fig. 3, where [A] is when the motor servo is locked before the predetermined time set in the timer has elapsed, and [B] is when the above predetermined time has elapsed. Indicates when the motor servo was not previously locked. FIG. 5 is a logic circuit diagram showing another embodiment, and FIG. 6 is a time chart showing the operation of the logic circuit shown in FIG. In this case, [B] indicates a case where the motor servo is locked after a predetermined time has elapsed. FIG. 7 is a flow chart showing the operation of another embodiment, FIG. 8 is a logic circuit diagram, and FIG. 9 is a time chart showing the operation of the logic circuit shown in FIG. 8. If the motor servo is locked before the specified time elapses,
[B] shows the case where the motor servo is locked immediately after another 2 seconds have elapsed after the predetermined time has elapsed. 1, 31, 51... Grounded release switch, 9, 30, 50... Timer circuit, 10, 4
0, 60... Servo detection circuit, 15, 44, 64
... Shutter circuit, 16, 45, 65 ... Release circuit, 18, 43, 63 ... Warning circuit, 21, 48, 68 ... Delay circuit.

Claims (1)

[Scope of Claims] 1. In an electronic camera configured to operate a self-timer and then operate a shutter after a predetermined time to perform an imaging operation and record the captured image on a disk, a drive means for rotationally driving the disk. a servo means for applying a servo to the self-timer; a servo state detection means for detecting a servo state by the servo means; and a servo state detection means for determining whether the servo is not locked after a predetermined period of time has elapsed since the self-timer was activated. An electronic camera comprising: warning generating means for generating a warning signal when a warning signal is detected. 2. In an electronic camera that operates a self-timer and then operates a shutter after a predetermined time to perform an imaging operation and record the captured image on a disk, a servo means that applies a servo to a drive means that rotationally drives the disk. and servo state detection means for detecting the servo state of the servo means; and when the servo state detection means detects that the servo is not locked after a predetermined period of time has elapsed since the self-timer was activated. and control means for detecting the servo state again by the servo state detection means after a predetermined period of time has elapsed, and operating the shutter when the servo is locked.