JPH08181937A - Combination camera provided with electronic viewer frame - Google Patents

Abstract

PURPOSE: To display a view angle for panoramic photography and a usual view angle for video camera simultaneously on a electronic viewer frame and to identify the both clearly. CONSTITUTION: This camera is provided with a panorama detection section 5 detecting the image pickup mode of a still camera 4 to be the panoramic photography mode and with a motion picture video signal processing means 7 applying prescribed processing to a motion picture video signal branched from a moving image video signal S1 recorded on a recording medium when the still camera 4 is operated in the panoramic photography mode and applying processing to the signal of a part corresponding to the panorama photographing view angle in the usual view angle and other parts so as to differential the display state of the parts. Both the usual view angle for video camera and the panorama view angle for panoramic photography are simultaneously displayed on a screen of one and the same electronic viewer frame 8 without giving any effect onto the recording of the motion video image by differently displaying the signal of the part corresponding to the panorama photographing view angle in the usual view angle and the other parts and the both are clearly identified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound camera equipped with an electronic viewfinder, and, for example, to an electronic viewfinder of a compound photographing apparatus incorporating a still camera using a silver halide photographic film and a movie video camera. It is suitable for use.

[0002]

2. Description of the Related Art An image in a conventional electronic viewfinder of a compound camera as described above is the same as an image of a video camera recorded on a recording medium of a video camera recorder, and is used in a panoramic photographing mode of a still camera. However, the visual field of view of the electronic viewfinder was unchanged at the normal angle of view.

As described above, if the normal angle of view is kept, there is a problem that the photographing mode of the still camera is unknown.
Therefore, by electrically processing the moving image in accordance with the panoramic shooting mode in the still camera, the shooting angle of view is almost the same as the panoramic shooting angle, and the image is displayed on the electronic viewfinder. It is possible to

Alternatively, the video field frame may be set by a mechanical structure so that only the video field in the electronic viewfinder has a field corresponding to the panoramic shooting mode.

[0005]

However, the above conventional example has the following drawbacks in the panoramic photographing mode of the still camera. That is, (1) the panoramic shooting angle of view is not clear when the moving image remains at the normal angle of view.

(2) When the video image of the video camera is electrically processed so as to have an angle of view substantially equal to the angle of view of the panoramic image, it is impossible to simultaneously record the moving image of the normal angle of view.

Further, (3) when the image field frame is set mechanically, the structure becomes complicated and there is a problem that the angle of view for panoramic photography and the normal angle of view for video camera cannot be simultaneously confirmed. there were.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to simultaneously display a panoramic shooting angle of view and a video camera normal angle of view on an electronic viewfinder, and to be able to clearly identify the two. .

[0009]

A compound camera equipped with an electronic viewfinder according to the present invention is a still camera capable of both normal shooting and panoramic shooting, and the still camera performs normal shooting. In a compound camera equipped with an electronic viewfinder that has a video camera recorder that records a moving image with an angle of view that is almost the same as the angle of view at time, panorama detection for detecting that the shooting mode of the still camera is panoramic shooting. And a moving picture video signal branched from the moving picture video signal supplied to the recording circuit for recording on the recording medium of the video camera recorder when the panorama detection means detects the panoramic shooting mode of the still camera. Given the prescribed treatment to
The moving image video signal processing means for performing signal processing for displaying different display states at the portion corresponding to the panoramic shooting angle of view within the normal angle of view and the moving image video signal processing means. And an electronic viewfinder for displaying a moving image video signal subjected to predetermined signal processing.

According to another feature of the present invention, a still camera capable of performing both normal shooting and panoramic shooting, and moving image recording having substantially the same angle of view when the still camera is performing normal shooting. In a composite camera equipped with an electronic viewfinder having a video camera recorder for performing a panorama detection means for detecting that the shooting mode of the still camera is panoramic shooting, and the panorama detection means is provided for the still camera. Pulse signal generating means for generating a pulse signal having a predetermined pulse width in synchronization with the moving image video signal recorded on the recording medium by the video camera recorder when it is detected that the photographing mode is panoramic photographing. , A video image supplied to a recording circuit for recording on the recording medium of the video camera recorder. An amplitude varying means for varying the amplitude of at least one of the luminance signal and the chrominance signal in the moving picture video signal branched from the audio signal by the pulse signal having the predetermined pulse width, and the amplitude varying by the amplitude varying means. An electronic viewfinder for displaying the captured motion video signal.

Another feature of the present invention is that the electronic viewfinder is a color viewfinder.

[0012]

Since the present invention has the above-mentioned technical means, the moving image video signal supplied to the electronic viewfinder in the panoramic photographing mode of the still camera is subjected to predetermined signal processing, whereby within the normal angle of view. Since different displays are displayed for the part corresponding to the angle of view for panoramic shooting and the other parts, even in panorama shooting mode, the same electronic view can be displayed without affecting the recording of the moving image. It is possible to project both the normal angle of view for the video camera and the panoramic angle of view for panoramic shooting on the screen of the viewfinder at the same time, and to clearly identify the two.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a compound camera equipped with an electronic viewfinder according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram best representing the features of the present invention. Reference numeral 1 is an image pickup device which is an image pickup unit for a video camera, 2 is connected to an image pickup device 1, and an output signal of the image pickup device 1 is a composite video signal. It is a video camera signal processing unit for converting to.

A video recorder 3 is connected to the video camera signal processing unit 2 and records the system composite video signal of the video camera signal processing 2, and its recording system is not particularly limited.

Reference numeral 4 denotes a still camera block for taking a silver salt still picture, which corresponds to both normal shooting mode and panoramic shooting mode. 5 is a panorama detector that detects the panoramic shooting mode of the still camera 4 and outputs a control signal, 6 is connected to the panorama detector 5,
It is a pulse generator that generates a specific pulse according to the control signal output from the panorama detector 5.

Reference numeral 7 is an amplitude variable device connected to the video camera signal processing unit 2 for changing the amplitude of the composite video signal output from the video camera signal processing unit 2 during the period of the pulse generated by the pulse generator 6. It is an electronic color viewfinder that is connected to the device 7 and projects the output composite video signal of the video camera signal processing unit 2 which is varied by the amplitude varying device 7.

FIG. 2 is a timing chart of signals in each part of the block diagram of FIG. 1. (a) is an output composite video signal S1 of the video camera signal processing,
The first T1 is one vertical synchronization period.

Further, (b) is a pulse signal S3 generated by the pulse generator 6, which is synchronized with one vertical synchronization period T1. The periods T2, T3, and T4 are fixed, and in particular, the third period T3 corresponds to the period corresponding to the panoramic shooting angle of view within the normal angle of view of the composite video signal.

(C) is a composite video signal S4 output from the amplitude varying device 7 when it is controlled by the output pulse signal of the pulse generator 6.

Next, the operation of the compound camera equipped with the electronic viewfinder of the present embodiment having the above-mentioned structure will be described with reference to the flowchart of FIG. First, when the shooting operation is started, the panorama detector 5 detects whether or not the panorama shooting is performed in step P1.

As a result of the determination in step P1, if the still camera 4 is in the normal photographing mode, the process proceeds to step P2 to perform the normal photographing operation. In this case, the panorama detector 5, the pulse generator 6, and the amplitude varying device 7 do not perform any special operation, and the composite video signal S1 output from the video camera signal processing unit 2 does not undergo any special processing. It passes through the amplitude varying device 7 as it is.

That is, the composite video signal S
Since 1 is input to the electronic color viewfinder 8 without any change in amplitude, when the still camera 4 is in the normal shooting mode, an image whose contrast does not change is displayed on the screen of the electronic color viewfinder 8. It will be.

On the other hand, when the still camera 4 is operating in the panoramic shooting mode, the panorama detector 5 detects that it is in the panoramic shooting mode. Then, when it is detected that the still camera 4 is operating in the panoramic shooting mode, the panorama detector 5 outputs the control signal S2 to the pulse generator 6. In this case, the processing of each unit proceeds from step P2 to step P3.

In step P3, the pulse generator 6
Outputs a pulse signal S3 having a predetermined pulse width shown in FIG. 2B to the amplitude varying device 7. When the pulse signal S3 is given, the amplitude varying device 7 attenuates the level of the input composite video signal S1 only during the "H" period of the pulse signal S3 of FIG. 2B, and outputs it to the electronic color viewfinder 8. To operate (Step P
4).

The composite video signal S4 output from the amplitude varying device 7 has an amplitude change as shown in FIG. 2C, and the composite video signal S4 which has received this amplitude change is an electronic color view. It is input to the finder 8.

As a result, the image displayed on the screen of the electronic color viewfinder 8 is T in FIG. 2 (c).
Since the period of 3 is a normal video signal level, it is projected as a normal contrast image. However, during the periods T2 and T4, the composite video signal is attenuated, so that it is displayed as a low-contrast image (step P5).

Next, in step P6, it is determined whether or not the still camera 4 continues to shoot. Then, when the photographing is continued, the process returns to step P1 and the above-described processing is repeated.

As described above, in the electronic color viewfinder 8 of the present embodiment, the image projected on the electronic color viewfinder 8 in the panoramic photographing mode has the normal angle of view, but The part corresponding to the angle of view for panoramic shooting is projected with normal contrast, and the other part is projected as a low-contrast image.

Thus, the photographer can easily identify the panoramic shooting angle of view within the normal angle of view due to the difference in contrast, and both the normal angle of view and the panoramic shooting angle of view can be simultaneously determined. It is possible to confirm.

In the above embodiment, the amplitude varying device 7
Performs switching of the attenuation amount by a binary control signal of "H" / "L". However, even if the control signal is a signal that changes in an analog manner and the attenuation amount is continuously variable, The same effect as the above-described example can be obtained.

In the above description, the signal handled by the amplitude varying device 7 is a composite video signal.
The same effect can be obtained even if the amplitude variable device 7 handles the luminance signal only, the color signal only, or the luminance signal and the color signal separately.

Further, in the above-described embodiment, the amplitude of the composite video signal is changed between the normal angle of view and the angle of view for panoramic photographing so that the difference in the angle of view can be confirmed. , For example, the above-mentioned second period T
The display state may be changed by blinking the second and fourth periods T4.

As described above, in the present embodiment, the video signal supplied to the electronic viewfinder is electronically processed so that the angle of view of the video camera for recording the moving image and the panoramic photographing of the still camera can be obtained. The angle of view and the angle of view can be checked at the same time. For this reason, a complicated mechanical structure is not required, and it can be realized in a small size, a light weight and at a low cost.

[0034]

As described above, according to the present invention, the angle of view of a video camera for recording a moving image and the angle of view for panoramic photography of a still camera are set in a panoramic photography mode of a still camera in a compound camera. Since they are displayed simultaneously in the same electronic viewfinder, these angle of view can be confirmed at the same time, and both angle of view can be easily identified. In addition, by performing electronic processing on the video signal supplied to the electronic viewfinder, the angle of view of the video camera for recording the moving image and the angle of view for panoramic shooting of the still camera can be checked at the same time. A simple mechanical structure is not required, and a comfortable and comfortable operating environment for the photographer can be realized in a small size, light weight, and at low cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a timing chart of signals in each unit according to the embodiment of the present invention.

FIG. 3 is a flowchart for explaining a processing procedure of each unit according to the embodiment of the present invention.

[Explanation of symbols]

 1 image sensor 2 video camera signal processing unit 3 video recorder 4 still camera 5 panorama detection unit 6 pulse generator 7 amplitude variable unit 8 electronic color viewfinder

Claims (3)

[Claims] 1. A still camera capable of performing both normal shooting and panoramic shooting, and a video camera recorder for recording a moving image having an angle of view substantially the same as the angle of view when the still camera is performing normal shooting. In a compound camera equipped with an electronic viewfinder having, a panorama detecting means for detecting that the shooting mode of the still camera is panoramic shooting, and the panorama detecting means detects the panoramic shooting mode of the still camera. At this time, in order to record on the recording medium of the video camera recorder, a predetermined process is performed on the moving image video signal branched from the moving image video signal supplied to the recording circuit, and the angle of view for panoramic shooting within the normal angle of view is set. A video video that performs signal processing so that the corresponding parts and other parts have different display states. Signal processing means and a composite camera having an electronic view finder and having an electronic viewfinder for displaying a motion video signal predetermined signal processing is performed by the moving picture video signal processing means. 2. An electronic system having a still camera capable of performing both normal shooting and panoramic shooting, and a video camera recorder for recording moving images having substantially the same angle of view when the still camera is performing normal shooting. In a compound camera equipped with a viewfinder, a panorama detecting means for detecting that the still camera has a panoramic shooting mode, and the panorama detecting means detects that the still camera has a panoramic shooting mode. And a pulse signal generating means for generating a pulse signal having a predetermined pulse width in synchronism with the moving image video signal recorded on the recording medium by the video camera recorder, and on the recording medium of the video camera recorder. To record
Amplitude varying means for varying the amplitude of at least one of the luminance signal and the color signal in the moving picture video signal branched from the moving picture video signal supplied to the recording circuit by the pulse signal having the predetermined pulse width, A composite camera having an electronic viewfinder, comprising: an electronic viewfinder for displaying a moving image video signal whose amplitude is changed by the amplitude changing means. 3. The compound camera with an electronic viewfinder according to claim 1, wherein the electronic viewfinder is a color viewfinder.