JPH09189959A - Video camera with integrated still camera - Google Patents

Abstract

An object of the present invention is to solve the problem that the angle of view of a still camera cannot be confirmed with an electronic viewfinder while capturing an image with a video camera. A video camera zoom lens and a still camera zoom lens are provided on the front surface of a video camera body. An electronic viewfinder 12 is provided on the back surface of the video camera body 10. The electronic viewfinder 12 displays an image captured through the video camera zoom lens 11 in order to facilitate still image capturing during video image capturing, and also displays the zoom magnification of the still camera unit and the zoom magnification of the video camera unit. Based on the zoom ratio of, the still image of the angle of view taken by the zoom lens 22 of the still camera unit or an image corresponding thereto is displayed on the screen of the electronic viewfinder 12 as a sub screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera with a built-in still camera, and more particularly, to a video camera for recording a moving image on a magnetic tape and a still camera for recording a still image on a photographic film as an integrated structure, and an electronic camera. The present invention relates to a video camera with a built-in still camera, which is configured to facilitate shooting with a still camera using a viewfinder.

[0002]

2. Description of the Related Art Conventionally, a video camera for magnetically recording a moving image on a magnetic tape and a still camera for exposing a still image on a photographic film have been developed as independent products. However, when shooting the same subject with a video camera and shooting with a still camera, both the video camera and the still camera are carried around, which is troublesome. I had to interrupt the imaging by the camera.

Accordingly, a still camera-integrated video camera in which a video camera and a still camera are integrated has been developed. As such a still camera integrated video camera, there is one disclosed in Japanese Patent Laid-Open No. 63-261330. This publication has a configuration in which a still camera is provided on the left side of the housing as viewed from the front of a box-shaped housing, and a video camera is provided on the right side of the housing. An objective lens for a still camera and an objective lens for a video camera are arranged on the front surface of the housing, and an objective lens for an optical viewfinder is arranged on the center of the front surface of the housing.

As described above, since the optical viewfinder is provided at the center of the front surface of the housing, the parallax between the subject viewed by the optical viewfinder and the image taken by the still camera is small, and the optical viewfinder is provided. Since the parallax (parallax) between the image captured by the video camera and the image captured by the video camera is small, one optical viewfinder can serve as the viewfinder of the video camera and the still camera. Therefore, it is possible to take an image with a video camera while looking at the optical viewfinder, and to take an image with a still camera when there is a photo opportunity.

[0005]

However, in the above publication, the parallax of the video camera and the still camera with respect to the optical viewfinder is made small, but the parallax itself cannot be eliminated.

In order to solve such a problem, in addition to the optical viewfinder, an image captured by a video camera is displayed on a liquid crystal display (LCD) and the liquid crystal display is used as an electronic viewfinder. Video cameras with integrated still cameras are being developed. With this configuration, since it is possible to take an image with a video camera while looking at the electronic viewfinder and also to take an image with a still camera at the time of a shutter chance, the parallax described above does not occur.

Further, in the video camera with a built-in still camera as described above, a zoom lens is used as an objective lens of the still camera and the video camera so that shooting and imaging can be performed while changing the angle of view from wide angle to telephoto. For example, a distant subject can be captured in a large size, or a subject that cannot be included in the angle of view with a standard lens can be captured and imaged without changing the position of the camera.

However, when the zoom magnification of the still camera and the zoom magnification of the video camera are set to be different, only the image taken by the zoom lens of the video camera is displayed on the electronic viewfinder, so that the still picture is displayed. I could not confirm the angle of view of the camera with the electronic viewfinder.

Therefore, even though the image of the subject captured by the video camera is displayed on the electronic viewfinder, if there is a difference in zoom magnification, the still camera captures the image without knowing the angle of view. There was a problem of doing it. The present invention has been made in view of the above points, and provides a video camera with a built-in still camera configured so that the angle of view of the still camera can be confirmed with an electronic viewfinder while the video camera is capturing an image. The purpose is to

[0010]

In order to solve the above problems, the present invention has the following features. According to the invention of claim 1, a still camera unit having a still zoom lens for exposing a still image of a subject to a photographic film, a still zoom control circuit for controlling a zoom magnification of the still zoom lens, and a video zoom. A video camera unit for recording an image signal of a moving image picked up by a lens on a magnetic tape, a video zoom control circuit for controlling a zoom magnification of the video zoom lens, and an image picked up by the video camera unit are displayed. An electronic viewfinder,
Still zoom operation means for changing the zoom magnification of the still zoom lens, video zoom operation means for changing the zoom magnification of the video zoom lens, and an optical signal imaged by the video camera unit is converted into an image signal. And a video camera signal processing circuit for controlling the still zoom control circuit and the video zoom control circuit according to information from the video zoom control circuit. In a body-type video camera, a video signal obtained at an arbitrarily set zoom magnification of the video zoom lens is converted to match an angle of view obtained at an arbitrarily set zoom magnification of the still zoom lens. For this purpose, an image scaling calculation means for calculating the scaling ratio of the image is provided, and the zoom operation means for still image adjustment is performed. It is characterized in that to display an image signal to the electronic viewfinder, which corresponds to the angle of view captured by the zoom magnification of the still zoom lenses.

Therefore, according to the first aspect of the present invention, the image signal corresponding to the angle of view captured by the zoom magnification of the still zoom lens adjusted by the still zoom operating means can be displayed on the electronic viewfinder. Therefore, the zoom magnification of the still zoom lens can be operated while looking at the electronic viewfinder regardless of the difference between the zoom magnification of the still zoom lens and the zoom magnification of the video zoom lens.

According to a second aspect of the present invention, in the still camera-integrated video camera according to the first aspect, when the still camera section and the video camera section simultaneously perform image pickup, the still zoom lens. It is characterized in that display control means for displaying image information corresponding to the angle of view captured by is displayed on a part of the electronic viewfinder.

Therefore, according to the second aspect of the present invention, when the still camera section and the video camera section simultaneously perform image pickup, the image information corresponding to the angle of view captured by the still zoom lens is displayed in the electronic viewfinder. Since it can be displayed in a part, it is possible to operate the zoom magnification of the still zoom lens while looking at the electronic viewfinder.

According to a third aspect of the present invention, in the still camera-integrated video camera according to the first aspect, the signal output from the video camera signal processing circuit and the signal output from the image scaling calculation means are An image to be recorded on a magnetic tape, which has a first selection circuit and a second selection circuit for selecting, the first selection circuit selecting a signal to be input to the electronic viewfinder, and the second selection circuit. It is characterized by selecting a signal.

According to the third aspect of the invention, the first selection circuit selects the signal to be input to the electronic viewfinder, and the second selection circuit selects the image signal to be recorded on the magnetic tape. An image corresponding to the zoom magnification of the still zoom lens can be displayed on the electronic viewfinder.

According to a fourth aspect of the present invention, in the still camera-integrated video camera according to the first aspect, when the still camera section simultaneously takes a picture and the video camera section takes an image, a still zoom lens is provided. When the angle of view setting is set wider than the angle of view setting of the video zoom lens and at least the shooting information shot by the still camera unit is displayed on the electronic viewfinder, the image information shot by the still camera unit is sufficient. It is characterized by having an image creating means for creating an image of a non-existing portion based on image information taken by the video camera unit.

Further, according to the invention of claim 4, when the photographing information photographed by the still camera unit is displayed on the electronic viewfinder, an image of a portion lacking in the image information photographed by the still camera unit is displayed on the video camera unit. Since it is created based on the image information captured in step 6, even when the view angle setting of the still zoom lens is set wider than that of the video zoom lens, the zoom magnification of the still zoom lens can be adjusted while looking at the electronic viewfinder. It can be operated.

According to a fifth aspect of the present invention, in the video camera with a built-in still camera according to the first aspect, when the image is taken only by the still camera section, the video zoom lens is provided with an angle of view of the still zoom lens. It is characterized by having a drive control means for driving so as to follow the change.

According to the fifth aspect of the invention, since the video zoom lens is driven so as to follow the change in the angle of view of the still zoom lens, the zoom magnification of the still zoom lens can be adjusted while observing the electronic viewfinder. It can be operated. Further, the invention of claim 6 is the video camera with a built-in still camera according to claim 1, further comprising drive control means for driving the zoom lens for video to a wide-angle side when shooting is performed only by the still camera part. It is characterized by.

According to the invention of claim 6, since the video zoom lens is driven to the wide angle side, the angle of view of the still camera section is operated while observing the electronic viewfinder regardless of the zoom magnification of the still zoom lens. can do. According to a seventh aspect of the present invention, in the still camera-integrated video camera according to the first aspect, an image signal of an angle of view captured by the still zoom lens is generated by operating a shutter button of the still camera unit, It is characterized by further comprising image creating means for displaying an image photographed by the still camera section on the electronic viewfinder.

According to the invention of claim 7, an image signal of an angle of view captured by the still zoom lens is generated by operating a shutter button of the still camera unit, and an image captured by the still camera unit is electronically viewed. Since it can be projected on the viewfinder, the angle of view at the moment of shooting can be confirmed on the electronic viewfinder.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the appearance of a still camera-integrated video camera according to the present invention.

Reference numeral 10 denotes a main body of the video camera unit. A video zoom lens 11 of the video camera is provided on the front left side of the main body, and an electronic viewfinder 12 composed of a liquid crystal panel (LCD) is provided on the rear face thereof. As will be described later, the electronic viewfinder 12 has one of a parent screen in which an image is displayed on the entire screen according to each operation mode and a parent-child screen in which a child screen smaller than the parent screen is inserted in the parent screen. Displayed selectively. Also, the video camera body 10
On the upper surface of the, the video camera imaging switch button 13, the video camera power switch 14, the video zoom lens 1
A zoom switch 15 for operating 1 to the wide-angle side or the telephoto side and various operation buttons 16 for operating each function of the video camera (operation functions such as recording / playback, stop, fast forward, and rewind) are provided. .

A video AF mechanism (not shown) for measuring the distance to the object imaged by the video zoom lens 11 is built in the video camera body 10. It should be noted that this AF mechanism obtains distance data as a result of focusing, but since this is a known AF mechanism for video cameras, its detailed configuration is omitted here.

On the front right side of the video camera body 10, a still camera body 20 is attached and an optical viewfinder 21 of the still camera section is provided. The still camera body 20 includes a still zoom lens 2
2, infrared light emitting element 23 for distance measurement, infrared light receiving element 2 for distance measurement
4, a strobe 25, and the like. Below the video zoom lens 11, a still camera such as a shutter button 17 for a still camera, a power switch 18 for a still camera, and a zoom switch 19 for operating the still zoom lens 22 to a wide-angle side or a telephoto side. An operation unit is provided.

The shutter button 17 is composed of a two-step contact type switch. This two-step contact type switch is often used in ordinary still cameras that use a silver salt film. The first-step contact allows distance measurement and photometry for a subject, as well as shutter speed setting and flash emission. Is prepared. Then, the contact of the second stage outputs a command for opening and closing the shutter.

The distance measuring infrared light emitting element 23 and the distance measuring infrared light receiving element 24 constitute a distance measuring device 26, which will be described later based on the distance measuring data measured by the distance measuring device 26. An infrared AF mechanism (autofocus mechanism) moves the zoom lens 22 in the focus direction.

This AF mechanism for a still camera is generally used in a compact camera or the like. After the infrared light emitting element 23 for distance measurement emits infrared light, the infrared light is reflected on the object and the red light for distance measurement is used. The position shift when light is received by the outer light receiving element 24 is measured, and the distance to the subject is obtained by the principle of triangulation.

The still camera body 20 has a lid 27 rotatably attached to the front surface of the still camera body 20.
It is provided in. By rotating the lid 27, the back side of the still camera main body 20 is exposed, and a film can be mounted on a film mounting portion (not shown) provided on the back side of the still camera main body 20, and a video can be mounted. A magnetic tape cassette can be mounted on a cassette mounting section (not shown) of the camera body 10.

FIG. 2 is a block diagram showing the structure of a still camera-integrated video camera according to the present invention. The still camera-integrated video camera according to the present embodiment includes a still camera unit 32 that captures a still image of a subject by a still zoom lens 22 and records it on a film 31, and a video zoom lens 1.
1, a video camera unit 34 for capturing a moving image of a subject and recording it on the magnetic tape 33 is integrally provided.

First, the structure of the still camera unit 32 will be described, and then the structure of the video camera unit 34 will be described. In the still camera unit 32, the light from the subject is incident on the shutter 36 via the zoom lens 22 and the diaphragm 35. Then, when shooting is performed, the shutter 36 is released by operating the shutter button 17. Therefore, when the shutter 36 is released, an image of the subject is formed on the film 31, and as a result, the image of the subject is recorded (sensitized) on the film 31.

The still zoom lens 22 has a zoom drive section 41 and a focus drive section 42.
1, the zoom magnification is controlled, and the focus drive unit 42
By this, focus control for the subject is performed. The zoom drive unit 41 has a motor (not shown) that drives the zoom lens 22 to the wide-angle side or the telephoto side, and is drive-controlled by a drive signal from the still camera zoom control circuit 43. Therefore, the zoom drive unit 41 is driven according to the drive signal output from the still camera zoom control circuit 43 to control the zoom magnification of the still zoom lens 22 and detect the zoom magnification of the still zoom lens 22.

The zoom switch 19 is connected to the control circuit 44 as a still zoom operation unit. When the zoom magnification is set by operating the zoom switch 19, a zoom to be described later is performed according to the zoom magnification setting. Information (zoom magnification) is generated and supplied to the still camera zoom control circuit 43.

The focus drive section 42 includes a control circuit 4
The still zoom lens 22 is driven according to the focus control signal supplied from No. 4 to perform focus control.
Further, the still zoom lens 22 includes an aperture driving unit 5
7. A shutter drive unit 58 is provided.

The diaphragm driver 57 drives the diaphragm 35 in accordance with the diaphragm control signal supplied from the control circuit 44 to control the amount of light incident on the film 31. Further, the shutter drive unit 58 controls the release of the shutter 36 according to the shutter control signal supplied from the control circuit 44.

The control circuit 44 is connected with a measuring section 56 for measuring the brightness of the subject and the distance to the subject.
Information on the brightness of the subject and information on the distance to the subject are supplied from the measuring unit 56. The control circuit 44 controls the film 31 according to the information on the brightness of the subject supplied from the measuring unit 56.
The aperture control signal and the shutter control signal are generated so that the amount of light from the subject incident on
And the shutter drive unit 58 to control the amount of exposure and the exposure time for the film 31 to perform so-called exposure control.

Further, the control circuit 44 generates a focus control signal so that the image of the subject is formed on the film 31 in accordance with the information on the distance to the subject supplied from the measuring section 56, and the focus drive section 42 is produced. By supplying it, the still zoom lens 22 is driven to control the position of the lens, and so-called focus control is performed.

Next, the structure of the video camera section 34 will be described. The video camera unit 34 supplies the image of the subject to the video camera signal processing circuit 61 including a CCD (charge coupled device) image sensor or the like via the video zoom lens 11 and the diaphragm 60, and converts it into an electric signal. Further, the image signal (video camera signal) generated by the video camera signal processing circuit 61 is supplied to the video signal processing circuit 62 via the second selection circuit 74.

The sound signal around the subject captured by the microphone 63 is supplied to the sound signal processing circuit 75. The video signal output from the video signal processing circuit 62 is superimposed on the audio signal output from the audio signal processing circuit 75, and the magnetic head 65 attached to the rotating drum 64 causes the magnetic tape 33 to be recorded on the magnetic tape 33, for example, in the 8 mm video system. , VHS method is used for magnetic recording.

The video zoom lens 11 is provided with a zoom drive unit 66 for moving the lens to control the zoom magnification of the subject and a focus drive unit 67 for moving the lens to control the focus of the subject. Also,
The zoom drive unit 66 is connected to the video camera zoom control circuit 68, and moves the lens according to the zoom drive signal supplied from the video camera zoom control circuit 68.

The video camera zoom control circuit 68 detects the zoom magnification of the video zoom lens 11, and
Zoom information (zoom magnification) supplied from the control circuit 44
A zoom drive signal is generated according to the above, and is supplied to the zoom drive unit 66. In addition, the focus drive unit 67 includes a control circuit 44.
The lens of the video zoom lens 11 is moved in accordance with the focus control signal (AF signal) supplied from the camera to perform focus control.

The control circuit 44 generates zoom information according to the zoom magnification set by the operation of the zoom switch 15 by the zoom control function described later, and supplies this zoom information to the video camera zoom control circuit 68. The diaphragm drive unit 69 that drives the diaphragm 60 controls the diaphragm amount of the diaphragm 60 according to the diaphragm control signal (AE signal) supplied from the control circuit 44, and controls the incident light amount to the CCD image sensor. Further, the control circuit 44 generates an aperture control signal according to the information on the brightness of the subject supplied from the measuring unit 56,
The video camera signal processing circuit 6 is supplied to the diaphragm drive unit 69.
1 controls the amount of light supplied to the CCD image sensor that converts light into an electric signal, and performs so-called exposure control.

The video camera signal converted by the video camera signal processing circuit 61 is supplied to the character insertion circuit 71 via the first selection circuit 70. Character insertion circuit 71
Creates an insertion character according to the information from the control circuit 44, and inserts the created insertion character or the like on the screen of the electronic viewfinder 12 for display.

In this embodiment, the character insertion circuit 71 can display the zoom magnifications of the zoom lenses 11 and 22 and the angle of view of the still camera on a part of the screen of the electronic viewfinder 12. In addition to the zoom magnification, the character insertion circuit 71 uses a VT such as date and time, PLAY and REC.
Information to be recorded, such as the R mode, can be inserted into the electronic viewfinder 12.

Further, the control circuit 44 includes an image pickup switch 1
3, a video camera power switch 14, a video camera zoom switch 15, a shutter button 17, a still camera power switch 18, a still camera zoom switch 19, and various operation buttons 16 are connected. Therefore, the control circuit 4
Reference numeral 4 controls the operations of the video camera section 34 and the still camera section 32 in accordance with the operation of each switch, in addition to the zoom control processing described later.

Here, the image pickup device used in the video camera unit 34 is often a CCD image sensor, and the size thereof is currently 1/3 inch or 1/4 inch. The film 31 used in the still camera unit 32 is mainly 35 mm. This affects the size of the lens.

That is, the video camera unit 34 can have a smaller lens diameter than the still camera unit 32. If a lens having the same zoom magnification is used, the video camera lens can be made smaller. For example, if the zoom lens attached to the still camera unit 32 has a double zoom of 35 to 70 mm, the video camera unit 34 has 35 to 1 mm.
You will be able to install a 05mm 3x zoom lens.

Therefore, the still camera unit 32 has 35 to 7
When the 0 mm zoom lens is mounted and the video camera unit 34 is mounted with the 35 to 105 mm zoom lens, the angle of view of the still camera unit 32 and the angle of view of the video camera unit 34 can be matched. Therefore, in the still camera unit 32 and the video camera unit 34, an area (35 to 70 mm) in which the zoom magnification can be matched and an area (70 to 105 mm) in which the zoom magnification is different are generated.

Further, the control circuit 44 detects the zoom magnification of the still camera section 32 detected by the still camera zoom control circuit 43 and the video camera zoom control circuit 68 in order to facilitate still shooting during video shooting. Still view angle display program for displaying a small screen of an image corresponding to the view angle captured by the zoom lens 22 of the still camera unit 32 on the electronic viewfinder 12 based on the zoom ratio of the video camera unit 34 and the zoom ratio. And a zoom magnification display program for displaying the zoom magnification of the still camera unit 32 and the zoom magnification of the video camera unit 34 on the electronic viewfinder 12, and an image obtained with the zoom magnification of 11 of the video zoom lens set arbitrarily. The signal is converted into the angle of view obtained with the zoom magnification of the still zoom lens 22 set arbitrarily. To convert Migihitsuji, the image scaling operation program for calculating the magnification of the image, it is input.

In the reproducing mode, the video signal processing circuit 62 demodulates the reproduced image signal / audio signal read from the magnetic tape 33 by the magnetic head 65 and outputs it to the output terminal Tou.
Output from t to an external device (external monitor, etc.). At this time, the reproduced image signal is supplied from the video signal processing circuit 62 to the electronic viewfinder 12, and the reproduced image reproduced by the magnetic head 65 is displayed.

Reference numeral 72 denotes an image scaling conversion circuit (image scaling calculation means) for converting the video camera signal output from the video camera signal processing circuit 61 based on a command from the control circuit 44, as described later, to the still camera section 32. Is converted into the captured angle of view, and the video camera signal output from the video camera signal processing circuit 61 is converted into the arbitrarily set magnification.

Reference numeral 73 denotes a signal generating circuit which, when the still zoom lens 22 is operated to a wider angle side than the video zoom lens 11 to cause a shortage of image information, as will be described later, a signal of image information corresponding to the insufficient portion. To generate. For example, when the still zoom lens 22 is operated toward the wide-angle side, the still camera unit 32 captures a wide viewing angle and thus contains a large amount of information, whereas the video camera unit 3 includes a large amount of information.
Since the image captured by 4 is a narrow portion in the center of the image captured by the still camera unit 32, it is not possible to capture an image of the peripheral portion.

Therefore, the signal generating circuit (image creating means) 7
3 is an image captured by the still camera unit 32 instead of the insufficient image information because the image cannot be captured by the video zoom lens 11 due to the difference in zoom magnification between the still zoom lens 22 and the video zoom lens 11. Generate a signal with a similar background.

The first selection circuit 70 is supplied with the respective signals A, B and C from the video camera signal processing circuit 61, the image scaling conversion circuit 72 and the signal generation circuit 73.
The first selection circuit 70 selects a signal according to a command from the control circuit 44 and outputs it to the character insertion circuit 71.

The signals A and B from the video camera signal processing circuit 61 and the image scaling conversion circuit 72 are input to the second selection circuit 74, and the second selection circuit 74 receives from the control circuit 44. A signal is selected by a command and output to the video signal processing circuit 62. 3 to 5 are views of screens displayed on the electronic viewfinder 12. 3 is a screen in which the image B captured by the video camera unit 34 is displayed on the electronic viewfinder 12, and FIG. 4 is an image A captured by operating the video zoom lens 11 to the wide-angle side. 5 shows the image B displayed on the electronic viewfinder 12 and the peripheral image C that cannot be captured by the video zoom lens 11 when the still zoom lens 22 is operated to the wide-angle side. 9 is a screen in which the image C in the case of being displayed is displayed on the electronic viewfinder 12.

FIGS. 6 and 7 are parent and child screens displayed on the electronic viewfinder 12 when still shooting is performed during video shooting, and child screens of images corresponding to still images shot by still shooting on the main screen for video shooting. Shows the parent-child screen in which is inserted. That is, the sub-screen B of FIG. 6 shows an image when the zoom magnification of the video zoom lens 11 is set to a wider angle side than the still zoom lens 22, and the sub-screens B and C of FIG. 7 show the still zoom lens 22. 7 shows an image when the zoom magnification of is set to a wider angle side than the video zoom lens 11.

For example, when the power switch 14 and the image pickup switch 13 of the video camera unit 34 are on, the first selection circuit 70 selects the video camera signal processing circuit 61, and the electronic viewfinder 12 has the video camera unit 34.
The image captured by is displayed.

However, when the power switch 18 of the still camera section 32 is turned on during video image pickup, the first selection circuit 70 causes the signals A and B from the video camera signal processing circuit 61 and the image scaling conversion circuit 72. Select. for that reason,
As shown in FIG. 6, the electronic viewfinder 12 displays an image A captured by the video camera unit 34 as a parent screen, and a still image captured by the still camera unit 32 in the upper left of the image A. The same child screen B is inserted and the parent-child screen is displayed. At this time, the zoom magnification of the video zoom lens 11 is the still zoom lens 2
Since it is set to the wide angle side from 2, the video camera unit 3
An image having an angle of view corresponding to the zoom magnification of the still zoom lens 22 can be created as the sub-screen B from the image signal picked up by No. 4.

Further, the still camera section 32 is used during video image pickup.
When the power switch 18 is turned on, and the zoom magnification of the still zoom lens 22 is set to the wide-angle side of the video zoom lens 11, the selection circuit 70 causes the video camera signal processing circuit 61 and the image scaling conversion. The signals A, B and C from the circuit 72 and the signal generating circuit 73 are selected. Therefore, as shown in FIG. 7, the electronic viewfinder 1
2, an image A captured by the video camera unit 34 is displayed as a parent screen, a child screen B corresponding to the angle of view of the still zoom lens 22 is displayed on the upper left of the image A, and a child screen B is further displayed. An image C of the signal generated by the signal generating circuit 73 is displayed around the.

On the screen of the electronic viewfinder 12, as shown in FIGS. 6 and 7, the video camera section 3 is displayed.
The zoom magnification of 4 and the zoom magnification of the still camera unit 32 are inserted and displayed by the character insertion circuit 71. Therefore, the zoom magnification of the video camera unit 34 and the zoom magnification of the still camera unit 32 can be checked while looking at the electronic viewfinder 12.

Next, the still camera unit 32 and the video camera unit 3 of the still camera-integrated type video camera having the above configuration.
The display mode of the electronic viewfinder 12 that is set at the time of shooting and capturing in 4 will be described. Display Mode in the Case of Capturing Images Only with the Video Camera Unit 34 In this display mode, when the power switch 14 of the video camera unit 34 is turned on, the electronic viewfinder 12 uses the image captured by the video camera unit 34 as the main screen.
To be displayed.

In this display mode, when the zoom magnification of the video zoom lens 11 is adjusted by operating the video camera zoom switch 15, zoom setting information from the video camera zoom switch 15 is input to the control circuit 44. The control circuit 44 controls the video camera zoom control circuit 68 according to the operation amount of the video camera zoom switch 15.
The zoom driving unit 66 is driven via the to change the zoom magnification of the video zoom lens 11.

When a zoom magnification greater than that of the video zoom lens 11 is required, the image magnification conversion circuit 72 is controlled to set a zoom magnification greater than or equal to that of the video zoom lens 11. can do. In this case, by continuing to operate the video camera zoom switch 15 to the telephoto side, the first selection circuit 70 switches to select the signal B, and the second selection circuit 74 switches to select the signal B. .

That is, as in the case of using the electronic zoom, the image signal converted to an arbitrary zoom magnification by the image scaling conversion circuit 72 is transferred to the video through the first selection circuit 70 and the second selection circuit 74. It is input to the signal processing circuit 62 and the character insertion circuit 71. Therefore, the image of the zoom magnification generated by the image scaling conversion circuit 72 is displayed on the electronic viewfinder 12, and the image signal of the zoom magnification generated by the image scaling conversion circuit 72 is magnetically recorded on the magnetic tape 33. It

Display mode when the video zoom lens 11 follows the zoom magnification of the still zoom lens 22 when only the still camera section 32 is used for photography. In this display mode, the power switch 18 of the still camera section 32 is turned on. Then, an image having the same angle of view as the video imaged by the still camera unit 32 is displayed on the electronic viewfinder 12 as a parent screen.

In this display mode, the control circuit 44
The first selection circuit 70 is the video camera signal processing circuit 6
The signal A output from 1 is controlled to be selected. That is, the control circuit 44 controls the video camera zoom control circuit 68 and the still camera zoom control circuit 43 at the same time so that they have the same zoom magnification. Therefore, although only the still camera unit 32 is photographed, an image having the same angle of view as the still zoom lens 22 is displayed on the electronic viewfinder 12. Therefore, the still camera unit 32 can be photographed while looking at the electronic viewfinder 12.

The video camera unit 34 has a 1/3 inch
Alternatively, a 1/4 inch CCD image sensor is used as an image sensor, and the film 31 used in the still camera unit 32 is 35 mm. Therefore, since the video camera unit 34 can use a lens having a smaller diameter than the still camera unit 32, the video zoom lens 11 can be easily manufactured as a lens having a high zoom magnification.

Since the video zoom lens 11 usually has a larger zoom magnification than the still zoom lens 22,
The video zoom lens 11 is a still zoom lens 22.
The angle of view does not become inconsistent when following the zoom magnification of. Display mode when the video zoom lens 11 is operated to the wide-angle side by shooting only the still camera unit 32. In this display mode, the power switch 18 of the still camera unit 32 is turned on and the video zoom lens 1 is operated.
1 is a display mode when the zoom lens 22 for still is operated to the wide-angle side.

In this display mode, the control circuit 44
Controls the first selection circuit 70 to select the signal B output from the image scaling conversion circuit 72. When the video zoom lens 11 is set to the wide-angle side by operating the video camera zoom switch 15, the control circuit 44 controls the image scaling conversion circuit 72 to control the still camera zoom control circuit 43 of the still zoom lens 22. The focal length obtained in step 1 is detected, and the image displayed on the electronic viewfinder 12 is electronically zoomed to have a magnification corresponding to the focal length.

Therefore, even if the video zoom lens 11 is set to the wide-angle side, the electronic viewfinder 12 displays an image with a magnification corrected based on the focal length of the still zoom lens 22. Still camera unit 3 while imaging with video camera unit 34
Display mode for displaying the same image as the image captured by the still camera unit 32 on the electronic viewfinder 12 as a sub-screen in the case of performing simultaneous shooting with the power switch 14 of the video camera unit 34. When the power switch 18 of the still camera unit 32 is turned on at the same time, a video image is displayed as a main screen and a still image is displayed as a sub screen on the electronic viewfinder 12 in the display mode. In this display mode, the control circuit 44 controls the first selection circuit 70 to select the signals A, B, and C from the video camera signal processing circuit 61, the image scaling conversion circuit 72, and the signal generation circuit 73. To do. The control circuit 44 also controls the image scaling conversion circuit 72 so that the image displayed on the electronic viewfinder 12 has the angle of view captured by the still camera unit 32.
Control. The image displayed on the electronic viewfinder 12 at this time is, as shown in FIG.
On the main screen A of the captured video image of the still camera unit 3
It is the one in which the child screen B of the captured image of 2 is inserted.

When the angle of view of the still zoom lens 22 is wider than that of the video zoom lens 11, when the angle of view captured by the still camera section 32 is wider than that of the video camera section 34, The first selection circuit 70 is controlled so that the lacking portion of the image due to the difference in the angle of view is replaced with the image of the signal C output from the signal generating circuit 73. Then, on the screen of the electronic viewfinder 12, as shown in FIG. 7, an image in which the parent screen A of the video image captured by the video camera unit 34 and the child screens B and C of the video captured by the still camera unit 32 are inserted. Is displayed.

In the case where the still camera unit 32 simultaneously captures images while the video camera unit 34 is capturing images, only the image captured by the still camera unit 32 is displayed in the electronic viewfinder 12.
This display mode is for displaying the still image on the electronic viewfinder 12 as the main screen when the power switch 14 of the video camera unit 34 and the power switch 18 of the still camera unit 32 are simultaneously turned on. This is a display mode for displaying on.

In the case of this display mode, the still camera section 32 is used for shooting while the video camera section 34 is picking up the image, and the still zoom lens 22 does not miss the shutter opportunity. This is a display mode set when it is desired to view only the captured image on the screen of the electronic viewfinder 12.

The control circuit 44 uses the video zoom lens 1
When 1 is operated to the wide-angle side, the first selection circuit 70 causes the video camera signal processing circuit 61 and the image scaling conversion circuit 7 to operate.
2. The signals A, B and C from the signal generating circuit 73 are controlled to be selected. Further, when the still zoom lens 22 is operated to the wide angle side, the control circuit 44 causes the first selection circuit 70 to select the signals A and B from the image scaling conversion circuit 72 and the signal generation circuit 73. To control.

In the case where the still camera section 32 is simultaneously shooting while the video camera section 34 is shooting, when the still zoom lens 22 is on the wide angle side, only the image shot by the still camera section 32 is displayed on the screen of the electronic viewfinder 12. In this display mode, the power switch 14 of the video camera unit 34 and the power switch 18 of the still camera unit 32 are simultaneously turned on, and the still zoom lens 22 has a wider angle than the video zoom lens 11. This is a display mode set when operated to the side.

In this display mode, the control circuit 44
Controls the first selection circuit 70 to select the signal B output from the image scaling conversion circuit 72 and the signal C output from the signal generation circuit 73. Then, the image scaling conversion circuit 72 generates a signal so as to thin out the peripheral portion that cannot be captured by the video zoom lens 11. Further, the signal generation circuit 73 generates an image signal of a portion which is captured by the still camera unit 32 but is not captured by the video camera unit 34 (a portion thinned by the image scaling conversion circuit 72).

The image displayed on the screen of the electronic viewfinder 12 at this time is as shown in FIG. Still camera unit 3 while imaging with video camera unit 34
Display mode when the shutter button 17 is operated by one step in the case of performing simultaneous shooting with 2 In this display mode, the power switch 14 of the video camera unit 34 and the power switch 18 of the still camera unit 32 are simultaneously turned on. The display mode is set when the shutter button 17 is operated by one step.

In this display mode, since the shutter button 17 of the still camera section 32 is a two-step contact type switch, the focus drive section 42 sets the focus of the still zoom lens 22 to the subject by the first step contact. Together with
The image displayed on the electronic viewfinder 12 is adjusted to the angle of view of the still zoom lens 22. At this time, the control circuit 44 controls the first selection circuit 70 to select the electronic zoom signal B output from the image scaling conversion circuit 72.

The display modes (1) to (3) are broadly divided into display modes in which only the video camera section 34 captures images, display modes in which only the still camera section 32 captures images, and the still camera section 32 and video as will be described later. It is classified into a display mode in which the camera section 34 simultaneously shoots and images. The display mode is a mode branched from the display mode, and the display mode is a mode branched from the display mode and processed.

The display mode setting process of the electronic viewfinder 12 executed by the control circuit 44 will be described with reference to the flowchart of FIG. The control circuit 44
In step S1 (hereinafter “step” is omitted), it is determined whether or not only the power switch 14 of the video camera unit 34 is operated to be turned on. When the power switch 14 is operated to be turned on, the process proceeds to S1a. , It is determined whether or not the power switch 18 of the still camera unit 32 has been turned on. In S1a, when the power switch 18 is off, a display mode is set in which the image captured by the video camera unit 34 is displayed on the electronic viewfinder 12 as a parent screen.

When the power switch 14 of the video camera unit 34 is off in S1, the process proceeds to S2, where it is determined whether or not only the power switch 18 of the still camera unit 32 has been turned on. In S2, when only the power switch 18 is operated to be turned on, the process proceeds to S2a, and it is determined whether or not the power switch 14 of the video camera unit 34 is operated to be turned on. In S2a, when the power switch 14 of the video camera unit 34 is off, the display mode in which the video zoom lens 11 follows the zoom magnification of the still zoom lens 22 or the video zoom lens 11 is operated to the wide-angle side. Set the display mode when

If the power switch 18 of the still camera unit 32 is off in S2, the current process is terminated and the process returns to S1. When the power switch 18 of the still camera unit 32 is turned on in S1a, or when the power switch 14 of the video camera unit 34 is turned on in S2a, the power switch 14 of the video camera unit 34 is turned on. Since both the power switches 18 of the still camera unit 32 are turned on, the process proceeds to S12, and any one of the above-mentioned display modes 1 to 3 is set.

Hereinafter, the display mode processing of the electronic viewfinder 12 will be described separately for each display mode. Above S1
In a, when the power switch 18 of the still camera unit 32 is off, the process proceeds to S4 and the first selection circuit 70
Switches to select the signal B, and the second selection circuit 74 switches to select the signal B. In the next step S5, the image of the zoom magnification generated by the image scaling conversion circuit 72 is displayed on the electronic viewfinder 12 as a parent screen (display mode). After this, the process of this time is terminated and the process returns to S1.

In S2, if only the power switch 18 of the still camera unit 32 is turned on,
In step S6, it is determined whether the video zoom lens 11 has been operated to the wide-angle side. Then, if the video zoom lens 11 is operated to the wide-angle side in S6, S7
Then, the first selection circuit 70 controls to select the signal A output from the video camera signal processing circuit 61. Then, in S8, the video camera zoom control circuit 6
8 and the still camera zoom control circuit 43 are simultaneously controlled to have the same zoom magnification so that the video zoom lens 11 follows the zoom magnification of the still zoom lens 22.

In the next S9, the electronic viewfinder 12 is
Then, an image having the same angle of view as the still zoom lens 22 is displayed as the parent screen (display mode). After this, the process of this time is terminated and the process returns to S1. Further, in the above S6,
When the video zoom lens 11 is not operated to the wide-angle side, the process proceeds to S10, and the first selection circuit 70 controls so as to select the signal B output from the image scaling conversion circuit 72. Then, in the next step S11, even if the video zoom lens 11 is set to the wide angle side by controlling the image scaling conversion circuit 72, the image of the magnification corrected based on the focal length of the still zoom lens 22 is displayed on the main screen. Is displayed on the electronic viewfinder 12 by the electronic zoom (display mode). After this, the process of this time is terminated and the process returns to S1.

When the power switch 18 of the still camera unit 32 is turned on in S1a or the power switch 14 of the video camera unit 34 is turned on in S2a, the video camera unit 34 is turned on. Since the power switch 14 and the power switch 18 of the still camera unit 32 are both turned on (display mode), S
In the case of moving to 12 and simultaneously shooting with the still camera unit 32 while shooting with the video camera unit 34, it is determined whether or not the signal shot by the still camera unit 32 is displayed as a sub-screen on the electronic viewfinder 12. .

At step S12, the still camera unit 32
When the still image is displayed on the child screen while being taken by the video camera unit 34, the process proceeds to S13, and it is determined whether the video zoom lens 11 has been operated to the wide-angle side of the still zoom lens 22. When the still zoom lens 22 is operated to the wide-angle side of the video zoom lens 11 in S13, the process proceeds to S14 and the first selection circuit 7 is operated.
0 controls to select the signals A, B, and C from the video camera signal processing circuit 61, the image scaling conversion circuit 72, and the signal generation circuit 73. Then, in the next step S15, the electronic scaling finder 12 is controlled by controlling the image scaling conversion circuit 72.
As shown in FIG. 7, an image A captured by the video camera unit 34 is displayed as a parent screen, a child screen B corresponding to the angle of view of the still zoom lens 22 is displayed in the upper left of the image A, and a child screen is displayed. An image C of the signal generated by the signal generating circuit 73 is displayed around B (display mode). That is, the image scaling conversion circuit 72 is designed to thin out the peripheral portion that cannot be captured by the video zoom lens 11.
And a portion that cannot be captured by the video camera unit 34 (a portion thinned by the image scaling conversion circuit 72).
The signal generation circuit 73 is controlled so as to generate the image signal. After this, the process of this time is terminated and the process returns to S1.

When the angle of view captured by the still camera unit 32 is wider than the angle of view captured by the video camera unit 34 as described above, the signal generation circuit 73 outputs the image to a portion where the image is insufficient due to the difference in the angle of view. The image of the signal C is inserted and displayed on the child screen. If the video zoom lens 11 is set to a wider angle side than the still zoom lens 22 in S13, the process proceeds to S16, and the first selection circuit 7 is operated.
0 controls to select the signals A and B output from the video camera signal processing circuit 61 and the image scaling conversion circuit 72. Then, in the next step S17, as shown in FIG. 6, the image A captured by the video camera unit 34 is displayed as a parent screen, and the upper left of the image A is the same as the still image captured by the still camera unit 32. The parent-child screen in which the child screen B is inserted is displayed on the screen of the electronic viewfinder 12. After this, the process of this time is terminated and the process returns to S1.

In S18, the video camera unit 3
In the case where the still camera unit 32 simultaneously captures images while capturing the image in 4, and only the image captured by the still camera unit 32 is displayed on the screen of the electronic viewfinder 12 (display mode), the process proceeds to S19 and the still camera is used. Zoom lens 22
It is further determined whether or not the video zoom lens 11 has been operated to the wide-angle side.

In S19, if the still zoom lens 22 is operated to the wide-angle side of the video zoom lens 11, the process proceeds to S20, in which the first selection circuit 70 causes the video camera signal processing circuit 61 and the image scaling unit. Conversion circuit 7
2. The signals A, B and C from the signal generating circuit 73 are controlled to be selected. Then, in the next step S21, the image scaling conversion circuit 72 is controlled to control the still camera unit 3 as shown in FIG.
The screens B and C of the captured image of 2 are displayed on the entire surface of the electronic viewfinder 12 (display mode).

If the video zoom lens 11 is operated to the wide-angle side of the still zoom lens 22 in S19, the process proceeds to S22 and the first selection circuit 70 is operated.
Is a video camera signal processing circuit 61, an image scaling conversion circuit 7
The signals A and B output from 2 are controlled to be selected. Then, in S23, the image B as shown in FIG. 3 is displayed on the entire surface of the electronic viewfinder 12 (display mode). After this, the process of this time is terminated and the process returns to S1.

In S18, the video camera unit 3
In the case where the still camera unit 32 simultaneously captures images while capturing images in 4, and only the image captured by the still camera unit 32 is not displayed on the screen of the electronic viewfinder 12 (display mode), the process proceeds to S24 and the still image is displayed. Camera unit 32
It is determined whether or not the shutter button 17 has been operated to the first-step contact position.

When the shutter button 17 of the still camera unit 32 is operated to the contact position of the first step in S24, S2
5, the first selection circuit 70 makes the image scaling conversion circuit 72
The signal B output from is controlled to be selected. At the same time, the focus drive unit 42 focuses the still zoom lens 22 up to the subject. And S26
Then, an image that matches the angle of view of the still zoom lens 22 is displayed on the electronic viewfinder 12 (display mode). After this, the process of this time is terminated and the process returns to S1.

In S24, the still camera unit 3
When the second shutter button 17 is not operated to the contact position of the first step, this process is terminated and the process returns to S1. Although the electronic viewfinder 12 is provided on the back surface of the video camera body 10 in the above embodiment, the invention is not limited to this, and the electronic viewfinder 12 may be provided at another position. Of course, the present invention can be applied.

In the above embodiment, the image A captured by the zoom lens 11 of the video camera unit 34 is displayed on the screen of the electronic viewfinder 12, and the zoom lens 22 of the still camera unit 32 is displayed at the upper left of the image A. Although the display pattern in which the child screen B corresponding to the angle of view of is displayed is given as an example, the invention is not limited to this, and the child screen B may be displayed at another position (upper right, lower left, upper left, etc. of the screen). You can

[0096]

As described above, according to the first aspect of the present invention,
Since the image signal corresponding to the angle of view captured by the zoom magnification of the still zoom lens adjusted by the still zoom operating means can be displayed on the electronic viewfinder, the zoom magnification of the still zoom lens and the video zoom lens It is possible to operate the zoom magnification of the still zoom lens while looking at the electronic viewfinder regardless of the difference from the zoom magnification of.

According to the second aspect of the invention, when the still camera section and the video camera section simultaneously perform image pickup, image information corresponding to the angle of view captured by the still zoom lens is displayed in the electronic viewfinder. Since it can be displayed in a part, it is possible to operate the zoom magnification of the still zoom lens while looking at the electronic viewfinder.

According to the third aspect of the invention, the first selection circuit selects the signal to be input to the electronic viewfinder, and the second selection circuit selects the image signal to be recorded on the magnetic tape. An image corresponding to the zoom magnification of the still zoom lens can be displayed on the electronic viewfinder.

Further, according to the invention of claim 4, when the photographing information photographed by the still camera unit is displayed on the electronic viewfinder, an image of a portion lacking in the image information photographed by the still camera unit is displayed on the video camera unit. Since it is created based on the image information captured in step 6, even when the view angle setting of the still zoom lens is set wider than that of the video zoom lens, the zoom magnification of the still zoom lens can be adjusted while looking at the electronic viewfinder. It can be operated.

According to the fifth aspect of the invention, since the video zoom lens is driven so as to follow the change in the angle of view of the still zoom lens, the zoom magnification of the still zoom lens can be adjusted while observing the electronic viewfinder. It can be operated. Further, according to the invention of claim 6, since the video zoom lens is driven to the wide angle side, the angle of view of the still camera unit can be operated while observing the electronic viewfinder regardless of the zoom magnification of the still zoom lens. it can.

According to the invention of claim 7, an image signal of the angle of view captured by the still zoom lens is generated by operating the shutter button of the still camera unit, and the image captured by the still camera unit is electronically viewed. Since it can be projected on the viewfinder, the angle of view at the moment of shooting can be confirmed on the electronic viewfinder.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of an embodiment of a still camera-integrated video camera according to the present invention.

FIG. 2 is a block diagram of a still camera-integrated video camera according to the present invention.

FIG. 3 is a diagram of a screen in which an image B captured by a video camera unit is displayed on an electronic viewfinder.

FIG. 4 is a diagram of a screen in which an image A captured by operating a video zoom lens on a wide-angle side is displayed on an electronic viewfinder.

FIG. 5 is an electronic viewfinder showing an image B displayed on the electronic viewfinder when the still zoom lens is operated to a wide-angle side and an image C displayed when a peripheral image C that cannot be captured by the video zoom lens is displayed. It is a figure of the screen displayed on.

FIG. 6 shows a screen of an electronic viewfinder displayed when still shooting is performed during video shooting, and a parent-child screen when the zoom magnification of the video camera unit is set to a wider angle side than the still camera unit.

FIG. 7 shows a screen of an electronic viewfinder displayed when still shooting is performed during video shooting, and a parent-child screen when the zoom magnification of the still camera unit is set to a wider angle side than the video camera unit.

FIG. 8 is a flowchart illustrating a display mode setting process executed by a control circuit.

[Explanation of symbols]

 10 Video Camera Main Body 11, 22 Zoom Lens 12 Electronic Viewfinder 13 Video Camera Imaging Switch Button 14 Video Camera Power Switch 15 Video Camera Zoom Switch 17 Still Camera Shutter Button 18 Still Camera Power Switch 19 Still Camera Zoom Switch 20 Still Camera Main Body 21 Optical Viewfinder 32 Still Camera Section 34 Video Camera Section 36 Shutter 43 Still Camera Zoom Control Circuit 44 Control Circuit 61 Video Camera Signal Processing Circuit 62 Video Signal Processing Circuit 65 Magnetic Head 68 Video Camera Zoom Control Circuit 70 First Selection circuit 71 Character insertion circuit 72 Image scaling conversion circuit 73 Signal generation circuit 74 Second selection circuit

Claims (7)

[Claims] 1. A still camera unit having a still zoom lens for exposing a still image of a subject onto a photographic film,
A still zoom control circuit for controlling the zoom magnification of the still zoom lens, a video camera unit for recording an image signal of a moving image picked up by the video zoom lens on a magnetic tape, and a zoom magnification of the video zoom lens. A video zoom control circuit for controlling, an electronic viewfinder for displaying an image captured by the video camera unit, a still zoom operating means for changing a zoom magnification of the still zoom lens, and a video zoom lens. Video zoom operation means for changing the zoom ratio,
A video camera signal processing circuit for converting an optical signal imaged by the video camera unit into an image signal, and the still zoom control circuit and the video zoom according to information from the still zoom operating means and the video zoom operating means. A still camera-integrated video camera having a control circuit for controlling a control circuit, wherein a video signal obtained at an arbitrarily set zoom magnification of the video zoom lens is arbitrarily set. The zoom magnification of the still zoom lens adjusted by the still zoom operation means is provided, in order to convert the zoom magnification of the image to match the obtained angle of view. Still camera characterized by displaying an image signal corresponding to the angle of view captured by the electronic viewfinder. Integrated video camera. 2. The still camera-integrated video camera according to claim 1, wherein, when the still camera section and the video camera section simultaneously perform imaging, the still camera zoom lens corresponds to an angle of view captured by the still zoom lens. A video camera with a built-in still camera, comprising display control means for displaying image information to be displayed on a part of the electronic viewfinder. 3. A still camera-integrated video camera according to claim 1, wherein the signal output from said video camera signal processing circuit and the signal output from said image scaling calculation means are selected.
Selection circuit and a second selection circuit, the first selection circuit selects a signal to be input to the electronic viewfinder, and the second selection circuit selects an image signal to be recorded on a magnetic tape. A video camera with a built-in still camera. 4. The still camera-integrated video camera according to claim 1, wherein when the still camera section and the video camera section simultaneously perform image pickup, the angle of view of the still zoom lens is set for the video. When the angle of view of the zoom lens is set wider, and at least the shooting information shot by the still camera unit is displayed on the electronic viewfinder, an image of a portion lacking in the image information shot by the still camera unit is displayed in the video. A still camera-integrated video camera, comprising: an image creating unit that creates an image based on image information captured by a camera unit. 5. The still camera-integrated video camera according to claim 1, wherein the video zoom lens is driven so as to follow a change in the angle of view of the still zoom lens when shooting is performed only by the still camera unit. A video camera with a built-in still camera, comprising: 6. The still camera-integrated video camera according to claim 1, further comprising drive control means for driving the video zoom lens to a wide-angle side when shooting with only the still camera unit. Video camera with integrated still camera. 7. The still camera-integrated video camera according to claim 1, wherein an image signal of an angle of view captured by the still zoom lens is generated by operating a shutter button of the still camera unit,
A still camera-integrated video camera, comprising image forming means for displaying an image photographed by the still camera section on the electronic viewfinder.