JPH064330Y2 - Camera capable of electric zoom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a photographing start signal generating means for generating a photographing start signal, a photographing control means for starting a photographing operation in response to the photographing start signal, and a zoom. The present invention relates to a camera capable of electric zoom having a zoom signal generating unit that generates a signal and a zoom control unit that performs zooming by electric in response to the zoom signal.

“Conventional technology” Conventionally, with a camera capable of this type of electric zoom, even if a shooting start signal is generated during zooming, it is possible to continue zooming without stopping zooming and to stop zooming. There is something that cannot be shifted to the shooting operation unless specially added.

"Problems to be solved by the invention" However, in such a conventional camera capable of electric zoom, if a shutter chance is encountered during zooming, a special operation for stopping the electric zoom is added to stop the zooming. Only after a while, it is not possible to shift to the shooting operation, and there is a problem that the shutter chance is missed during the zooming stop operation.

The present invention has been made by paying attention to such a conventional problem, and even if the shooting start signal is generated even during the zooming, the zooming is stopped, the shooting operation is started, and the shooting can be performed quickly. It is to provide a camera capable of electric zoom.

"Means for Solving Problems" The gist of the present invention for achieving such an object is to include a photographing start signal generating means (18) for generating a photographing start signal,
Shooting control means (11) for starting a shooting operation in response to the shooting start signal, zoom signal generating means (20) for generating a zoom signal, and zoom control means for electrically zooming in response to the zoom signal In the camera capable of electric zoom having (12), the zoom control means (12) stops the zooming when the photographing start signal is generated during the electric zooming, and the photographing control means ( Item 11) resides in a camera capable of electric zoom, which is characterized in that the photographing operation is started after the zooming is stopped.

"Operation" When a shooting start signal is generated by the shooting start signal generation means during zooming, the zoom control means stops zooming without adding any operation for stopping zooming.
Immediately thereafter, the photographing control means can start the photographing operation.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of the present invention.

As shown in FIG. 1, the CPU 10 as a control unit has a power switch 1 connected to a camera power battery (not shown).
7, a release switch 18, which is a photographing start signal means, a zoom signal generating means 20, a zoom mechanism 30, and a photographing operation section 40 are connected.

The zoom signal generating means 20 outputs a zooming direction (zoom up / down), a zoom up switch 21, a zoom down switch 22, a zoom up limit switch 23 that is turned on in a so-called Tele end state, and a so-called wide end state. And a zoom down limit switch 24.

A forward / reverse rotation motor 31 is connected to the zoom mechanism 30 so that a forward rotation causes a zoom-up operation and a reverse rotation causes a zoom-down operation. Zooming operation and zooming down operation are called zooming.

The photographing operation unit 40 performs autofocus, shutter opening / closing, film winding, and the like.

The CPU 10 includes a photographing control unit 11 that controls the photographing operation of the photographing operation unit 40 and a forward / reverse rotation motor 31 of the zoom mechanism 30.
And a zoom control means 12 for controlling the rotation start / stop and the rotation direction.

When the release switch 18 is turned on (a shooting start signal is generated), the photographing control means 11 waits for a sufficient time to stop the rotation of the forward / reverse rotation motor 31 that is rotating via the zoom control means 12. It is configured to control the shooting operation unit 40 to start the shooting operation and to detect the end of shooting of the shooting operation unit 40.

The zoom control means 12 stops the rotation of the forward / reverse rotation motor 31 when the release switch 18 is turned on during zooming, and one of the zoom up switch 21 and the zoom down switch 22 is turned on. When the photographing end signal 11 is input, zooming is restarted.

Next, the operation will be described.

FIG. 2 is a flowchart showing the operation of the CPU 10.

The power switch 17 is turned on to start. In step 1, it is determined whether the zoom-up step 21 or the zoom-down step 22 is on, and if it is on, the process proceeds to step 2.

In step 2, zoom up limit switch 2
1 or whether the zoom down step 24 is on or not, and if both are off, go to step 3.

In step 3, it is determined whether the zoom-up switch 21 or the zoom-down switch 22 is on, and if it is on, the process proceeds to step 4.

In step 4, it is determined whether or not the release switch 18 is on, and if it is on, the process proceeds to step 5.

In step 5, a signal for stopping zooming is generated, and the process proceeds to step 6.

In step 6, after a predetermined waiting time has passed, zooming is completely stopped, and then the process proceeds to step 7.

In step 7, the photographing operation is executed. That is,
Even when the zoom-up switch 21 or the zoom-down switch 22 remains turned on, the release switch 18 is accepted to be turned on and the photographing operation is executed. Then, the process proceeds to step 8.

In step 8, it is determined whether the power switch 17 is on. If it is off, the process proceeds to step 9 and ends. On the other hand, if it is on, the process returns to step 1 and is repeated.

On the other hand, if the release switch 18 is off in step 4, the process proceeds to step 10, the zooming start signal is generated in step 10, and then the process returns to step 2.

If both the zoom-up switch 21 and the zoom-down switch 22 are off in step 3, the process proceeds to step 11, the zooming stop signal is generated in step 1, and then the process returns to step 1.

If the zoom-up limit switch 23 or the zoom-down limit switch 24 is turned on in step 2, the process proceeds to step 11, the zooming stop signal is generated in step 11, and then the process returns to step 1.

Further, in step 1, the zoom up switch 2
1 and the zoom down switch 22 are both off, the process proceeds to step 12, and it is determined whether or not the release switch 18 is on. If it is on, the process proceeds to step 7, the photographing operation is executed in step 7, and the off operation is performed. If so, the process proceeds to step 8.

FIG. 3 shows a second embodiment of the present invention.

The camera capable of electric zoom according to the second embodiment can perform zooming and film automatic winding at the same time.

The zoom control circuit 12a includes two AND circuits 13 and 14
The output terminal of and the forward / reverse rotation motor 31 are connected.

The zoom-up switch 21, the zoom-up limit switch 23 and the photographing control circuit 11a are connected to the input end of one AND circuit 13, and the zoom-down switch 22 and the zoom-down switch are connected to the input end of the other AND circuit 14. Limit switch 24 and photographing control circuit 11a
Are connected.

The film feeding control circuit 15 and the release switch 18 are connected to the photographing control circuit 11a.

The relationship between the zoom down switch 22, the zoom down limit switch 24 and the AND circuit 14 is as follows.
The relationship with the D circuit 13 is the same, that is, the zoom-up switch 21, the zoom-up limit switch 23 and A
The relationship with the ND circuit 13 will be described, and the other will be omitted.

When the zoom-up switch 21 is turned on, the AND circuit 13
Is input to the AND circuit 13 when it is turned off, while the L signal is input to the AND circuit 13 when the zoom-up limit switch 23 is turned on, and to the AND circuit 13 when turned off. The H signal is input.

The photographing control circuit 11a outputs an H signal to the AND circuits 13 and 14 when the shutter is closed, and outputs an L signal to the AND circuits 13 and 14 while the shutter is open.

When the zoom control circuit 12a receives the H signal from the AND circuit 13, the zoom control circuit 12a drives and controls the forward / reverse rotation motor 31 to zoom up, and when it receives the H signal from the AND circuit 14, the zoom control circuit 12a forwards / reverses rotation to zoom down. It is configured to drive and control the motor 31.

The film feeding control circuit 15 uses the pulse when the signal from the photographing control circuit 11a rises from L to H as a trigger to drive and control the film feeding motor 16 to wind up one frame of film. is there.

Next, the operation will be described.

The relationship between the zoom-down operation and the film winding operation is
Since the relationship between the zoom-up operation and the film winding operation is the same, the relationship between one zoom-up operation and the film winding operation will be described below, and the other will be omitted.

When zooming up, the AND circuit 13 includes a zoom-up switch 21 and a zoom-up limit switch 23.
And the H signal is inputted from the photographing control circuit 11a, and the zoom control circuit 12a drives and controls the forward / reverse rotation motor 31 to zoom up.

In this state, when the release switch 18 is turned on to operate the shutter, the L signal is input from the photographing control circuit 11a to the AND circuit 13, the L signal is input from the AND circuit 13 to the zoom control circuit 12a, and the zoom control circuit The reference numeral 12a controls the forward / reverse rotation motor 31 to stop the zoom-up operation so that proper photographing is performed and thus inappropriate photographing can be prevented.

When photographing is completed and the shutter is closed, the photographing control circuit 11
The signal from a changes from the L signal to the H signal, and the H signal is input to the film feeding control circuit 15 and the AND circuit 13.

The film feeding control circuit 15 controls the film feeding motor 16 by using the pulse signal rising from L to H as a trigger, and the film feeding motor 16 winds up one frame of film.

The H signal is input to all the input terminals of the AND circuit 13,
The zoom control circuit 12a controls the forward / reverse rotation motor 31,
The zoom-up operation that was stopped while the shutter was operating is restarted.

When the film feed motor 16 winds up one frame of film by the pulse signal rising from L to H from the photographing control circuit 11a, when the zoom-up switch 21 is turned on to perform zoom-up operation, the zoom is performed. If the up-limit switch 23 is on and the lens barrel is not at the zoom-up limit position, the H signal is input to all the input terminals of the AND circuit 13, so the zoom control circuit 12a
Controls the forward / reverse rotation motor 31,
Rotates in parallel with the film winding of the film feeding motor 16 so as to perform a zoom-up operation.

When the shutter is operating, the L signal from the shooting control circuit 11a continues to be input to the AND circuit 13. Therefore, even if the zoom-up switch 21 is turned on, the L signal is input from the AND circuit 13 to the zoom control circuit 12a. Is
The forward / reverse rotation motor 31 does not rotate, and the zoom-up operation is not performed unless the shutter is closed after the photographing operation is completed.

[Advantage of Invention] According to the camera capable of electric zooming according to the present invention, even if the shooting start signal is generated even during zooming, the shooting operation is automatically performed and the shutter chance is not lost. .

According to the camera capable of electric zoom according to the first embodiment,
Since a shooting operation is started after a predetermined waiting time required for stopping zooming after the zooming stop signal is generated, reliable shooting can be performed.

Further, if the zoom signal is continuously input even after the photographing is finished, the zooming is restarted, so that it is not necessary to generate the zooming signal again, and the operation becomes very simple.

According to the camera capable of electric zoom according to the second embodiment,
Since the zooming and the film winding are performed in parallel, the next photographing operation can be quickly dealt with.

[Brief description of drawings]

1 and 2 show a first embodiment of the present invention. FIG. 1 is a circuit diagram conceptually showing the configuration of the photographing control means and the like, and FIG. 2 shows the operation of the photographing control means and the like. The flow chart shown in FIG. 3 shows the second embodiment of the present invention, and is a conceptual block diagram of the photographing control circuit and the like. 11 ... Shooting control means 12 ... Zoom control means 18 ... Release switch (shooting start signal generation means) 20 ... Zoom signal generation means

Claims (3)

[Scope of utility model registration request] 1. A photographing start signal generating means for generating a photographing start signal, a photographing control means for starting a photographing operation in response to the photographing start signal, a zoom signal generating means for generating a zoom signal, and the zoom signal. In a camera capable of electric zoom having a zoom control means for performing electric zooming in response to the electric power, the zoom control means stops the zooming when the photographing start signal is generated during the electric zooming. A camera capable of electric zoom, wherein the photographing control means starts the photographing operation after the zooming is stopped. 2. The photographing control means generates a photographing end signal when the photographing operation ends, and the zoom control means restarts the zooming when both the photographing end signal and the zoom signal are input. A camera capable of electric zoom according to claim 1, characterized in that the utility model is registered. 3. When the photographing start signal is generated during the zooming, the photographing control means starts the photographing operation after a lapse of a time sufficient for the zoom control means to stop the zooming. A camera capable of electric zoom according to claim 1, which is characterized in that the utility model is registered.