JPH02230875A - Electronic still camera - Google Patents

Abstract

PURPOSE:To pick up plural frames of a picture with a different picture angle with consecutive shot by allowing shutter release operation during zooming. CONSTITUTION:When he zoom consecutive pickup mode is detected by a pickup mode setting means 11, the consecutive shot of 5 frames/sec is executed while the picture angle is varied automatically up to a double size and the consecutive shot is stopped by detecting a zoom position signal from a zoom lens 1 or the opening of shutter release. Since the consecutive shot is attained under zooming in this way, a shutter chance is not overlooked. Since recording/erasure is implemented properly, only a picture at a desired picture angle is selected optionally and easily after the pickup.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electronic still camera, and more specifically, an electronic still camera that is capable of continuous shooting (continuous shooting) while changing the angle of view by zooming. Regarding.

(Prior art) A solid-state image sensor such as a CCD is used as an imaging device, and after photoelectrically converting a still image of a subject projected onto an image plane,
Electronic still cameras that field-record the photoelectrically converted image on a rotating floppy disk are commercially available.

Furthermore, electronic still cameras equipped with a zoom lens have been proposed, for example, similar to the conventional compact silver halide film cameras.

(Problem to be Solved by the Invention) However, in a conventional electronic still camera, while the angle of view is changed by performing a zoom operation, shooting is performed in continuous shooting mode, and multiple still images with different angles of view are captured. There was no configuration that allowed continuous shooting.

In other words, continuous shooting can only be done with a fixed focus, and each time a zoom operation is performed, a shirt release is required to take a picture, which sometimes results in missed shutter opportunities. .

In particular, with imaging methods such as electronic still cameras in which shooting information can be easily recorded or erased, it would be useful to be able to take continuous shots during zoom operation and easily select only the desired angle after shooting, expanding the range of uses. It is.

SUMMARY OF THE INVENTION An object of the present invention was made in view of the above circumstances, and it is an object of the present invention to provide an electronic still camera that allows continuous shooting during zoom operation.

(Means for Solving the Problems) That is, the above object of the present invention is to automatically change the angle of view by performing the shirt crease operation during the zoom continuous shooting mode selected by the shooting mode setting means. This is achieved by an electronic still camera characterized in that it is equipped with a photographing control means that performs continuous projection and stops the continuous photographing by detecting a zoom position signal from a zoom lens or release of the shank release operation.

Since it is possible to operate the shirt release during the zoom operation, multiple frames of images with different angles of view can be taken by continuously ↑ darkest.

(Example) Hereinafter, an example of an electronic still camera according to the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram illustrating an embodiment of an electronic still camera of the present invention.

In Figure 1, the reflected light of the subject image is reflected by the zoom lens 1.
, enters the camera through the imaging lens 2 and the aperture 3.

The zoom lens 1 and the imaging lens 2 each include a plurality of lens groups, and have a focal length adjustment function and an imaging function by causing the lens groups to move relative to each other along the optical axis. .

The light incident into the camera is further guided to a CCD solid-state imaging element 6 via a beam splinter 4 and a shutter 5.

The solid-state image sensor 6 photoelectrically converts a still image of a subject formed on an imaging surface, and sends a video signal to a subsequent signal processing circuit 7.

The signal processing circuit 7 performs various signal processing on the input signal and then sends it to the recording section 8. The recording unit 8 magnetically records signals on a floppy disk (not shown).

The imaging/recording system described above and each system described later are managed by a control processor 110 that controls the entire camera as a photographing control means.
10 is composed of a control circuit 101 and an arithmetic processing circuit 102, which will be described later.

The control circuit 101 responds to the power switch 9, the shirt release switch 10, and the photographing mode setting means 11, respectively, and controls the imaging/recording system, the arithmetic processing circuit 102, and the like.

That is, when the power switch 9 is turned on, the control circuit 101 supplies power to the entire system and sets the camera in a state where it can take the most pictures.

Further, when the shirt release switch 10 having a two-stage stroke structure is provided in the first stroke of the half-pressed state and the switch SWI is closed, the control circuit 101 controls the AF sensor via the arithmetic processing circuit 102. 12. The photometry circuit 16 and the like are driven to set photographing specifications and the like. Furthermore, when the shirt release switch 10 is set to the second stroke in which it is deeply pressed and the switch SW2 is closed, the control circuit 101 drives the imaging/recording system based on the photographing operation.

Further, when a photographing mode is selected by the shadow mode setting means 11 and one of the single mode, continuous photographing mode, and zoom continuous photographing mode is set, the control circuit 101 detects this and selects the corresponding mode. Executes shooting based on the mode.

That is, when the single mode is detected, one frame worth of photographing is executed each time the shirt release switch 10 is operated once.

Note that the angle of view when this mode is selected is arbitrarily set via a zoom switch 15, which will be described later.

On the other hand, when the continuous shooting mode is detected, continuous shooting at 5 frames/second is executed at a fixed angle of view while the shutter release switch 10 is operated.

Also, if continuous zoom shooting mode is detected, the angle of view will be changed to 2.
Continuous photography is performed at 5 frames per second while automatically changing the size to double the size, and the continuous photography is stopped by detecting a zoom position signal from a zoom lens or an opening operation of the shirt release.

In this embodiment, the zoom position signal is generated when the zoom lens 1 is displaced to the telephoto end.

The arithmetic processing circuit 102 manages a detection/arithmetic system and a lens system for focal length adjustment, and a photometry/optical system for exposure control, respectively.

That is, regarding focal length adjustment, the arithmetic processing circuit 102 performs an adjustment based on distance measurement information output from the AF sensor 12 and zoom data (f value) from the zoom lens 1 that is sequentially input as lens information. Information for obtaining focus is calculated, and each drive system 13.14 of the lens 1.2
This is done by driving.

Further, the arithmetic processing circuit 102 calculates the amount of displacement based on the zoom position signal output from the zoom lens 1 when the power switch 9 is operated "on" under the zoom continuous ↑ darkest mode, The drive system 13 is controlled to constantly move the zoom lens 1 to the wide end.

That is, no matter what angle of view position the zoom lens 1 is at when the power is turned on, it is always moved to the wide end and then starts shooting in the telephoto direction.

Note that the arithmetic processing circuit 102 includes a zoom switch 15.
is connected, and by manually operating the zoom switch 15 in single mode, the angle of view can be arbitrarily selected in the tele or wide direction.

On the other hand, regarding exposure control, a part of the light incident on the beam splitter 4 is guided to a photometric circuit 16, and an electric signal converted by the photometric circuit 16 is sent to the arithmetic processing circuit 1.
02 and is executed.

That is, the arithmetic processing circuit 102 is connected to the photometric circuit l6.
Arithmetic processing is performed according to the brightness level and image forming time output from the drive system 1 of the aperture 3, shutter 5, etc.
7.18 to select an appropriate exposure value using an automatic exposure method.

Next, the operation of the control processor according to the present invention will be explained based on the flow chart of FIG.

In step (2), the power switch 9 is turned "on" to set the camera in the initial state of shooting.

In step (2), when the photographing mode is arbitrarily selected by the photographing mode setting means 11, the process proceeds to step (2).

In step (2), the control processor 110 detects the shooting mode and determines whether or not it is the continuous zoom shooting mode.

If zoom continuous possession mode is not selected now, proceed to step ■.

In step ■, shirt tally release sui, 7 chi 10
If it is determined that the switch is operated and the switch SWI is closed, the process proceeds to step (2).

In step (2), the floppy disk is driven, and in steps (2) to (2), the AF sensor 12, photometry circuit 16, and white balance unit (not shown) are controlled to set shooting specifications, and the camera is placed in a shooting standby state.

On the other hand, when the continuous zoom shooting mode is detected in step (2), the control processor 110 further detects the zoom position signal output from the zoom lens and determines the angle of view position of the zoom lens 1 in step (2). do. Assuming that the zoom lens is now set at the wide end, return to step (2).

If it is detected that the zoom lens is not at the wide end, the drive system 13 is controlled to drive the zoom lens until it moves to the wide end.

In step (2), the control pro-sensor 110 switches the shirt release switch 10 to switch S.
Determine whether W2 is closed. And now,
If the switch SW2 is closed, the process advances to step [phase].

In step [phase], a photographing operation for one frame is executed by narrowing down the shutter 5 and releasing the shirt, and the process proceeds to step (2).

In step (3), the control processor 110 detects the shooting mode again and determines whether it is the continuous zoom shooting mode. If you are not currently in zoom continuous shooting mode, proceed to step @.

In step @, when the "off" operation of the power switch 9 is confirmed, the camera is set in the imaging end state.

On the other hand, if the zoom continuous shooting mode is detected in step (2), the process proceeds to step (2).

In step 0, the control processor 110 further detects the zoom position signal output from the zoom lens to determine the field angle position of the zoom lens 1. If the zoom lens is now at the telephoto end, the process returns to step @ and ends the shooting by turning the power switch off.On the other hand, if it is detected that the zoom lens is not at the telephoto end, the process advances to step [phase].

In step (3), the control processor 110 again detects the state of the shirt release switch 10 and determines whether the switch 10 continues to keep the switch SW2 closed.

If the switch 10 is now in the open state, the process returns to step @ and the photographing is completed by operating the power switch "off".

On the other hand, switch SW2 of the shirt release switch 10
If is pressed continuously, this is detected and the process proceeds to step ■.

In step (2), the zoom lens is moved in the telephoto direction by a predetermined amount to change the angle of view, and then the process returns to step [phase].

In other words, if continuous zoom shooting mode is set,
The control processor 110 continues continuous shooting until the zoom lens reaches the telephoto end and a lens position signal issued or the release of the shirt release switch is detected.

(Effects of the Invention) As explained above, according to the electronic still camera of the present invention, continuous photographing can be performed based on the zoom operation, so that no shutter opportunity is missed. Furthermore, since recording/erasing can be performed as appropriate, after photographing, only images with a desired angle of view can be arbitrarily and easily selected.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an electronic still camera according to an embodiment of the present invention, and FIG. 2 is a flow chart explaining the operation of a control processor applied to the camera of FIG. 1--Zoom lens, 4--Beam splitter,
13, CCD solid-state image sensor, signal processing circuit, 8 power switch, shirt release switch, ↑ darkest mode setting means, AF sensor, 14.17,'1B--1 drive system, zoom switch, photometry circuit, control circuit , arithmetic processing circuit, control processor recording section, Figure-553-1

Claims (1)

[Claims] In the zoom continuous shooting mode selected by the shooting mode setting means, by performing a shutter release operation, continuous shooting is performed while automatically changing the angle of view, and the zoom position signal from the zoom lens or the shutter release operation is An electronic still camera characterized by comprising a photographing control means that detects an opening and stops the continuous photographing.