JP2852224B2 - Video camera with integrated still camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera integrated with a 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. The present invention relates to a still camera-integrated video camera configured to easily perform 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. Such a still camera-integrated video camera is disclosed in Japanese Patent Application 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 disposed on the front of the housing, and an objective lens for an optical viewfinder is disposed at the front center of the housing.

As described above, since the optical viewfinder is provided at the center of the front of the housing, the parallax between the subject viewed by the optical viewfinder and the image captured by the still camera is small, and the optical viewfinder is provided. The parallax (parallax) between the image and the image captured by the video camera is also small, so that one optical viewfinder can serve as both 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 reduced, but the parallax itself cannot be eliminated.

In order to solve such a problem, an image taken by a video camera is displayed on a liquid crystal display (LCD) separately from the optical viewfinder, and the liquid crystal display is used as an electronic viewfinder. Still camera integrated video cameras are being developed. With this configuration, it is possible to take an image with the video camera while looking at the electronic viewfinder, and also to take an image with the still camera when there is a photo opportunity, so that the parallax as described above does not occur.

Further, in the above-described still camera-integrated video camera, by using a zoom lens as an objective lens of the still camera and the video camera, it is possible to perform shooting and imaging while changing the angle of view from wide angle to telephoto. For example, a distant subject can be photographed in a large size, or a subject that does not fall within an angle of view with a standard lens can be photographed 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 differently, only the image taken by the zoom lens of the video camera is displayed on the electronic viewfinder. The angle of view of the camera could not be confirmed with the electronic viewfinder.

For this reason, in spite of the fact that the image of the subject picked up by the video camera is displayed on the electronic viewfinder, if there is a difference in the zoom magnification, the image is shot without knowing the angle of view shot by the still camera. There was a problem of doing it. A still camera equipped with an electronic finder is disclosed in Japanese Patent Laid-Open No. 3-259130.
It is disclosed in Japanese Patent Application Publication No. According to this publication, a still camera lens is a zoom lens, whereas a single focal length lens is used as a finder lens of an electronic view finder, and a video captured by the finder lens is converted into an electric signal. CCD for image sensor
(Image sensor) is used.

This configuration does not include a video camera, but detects the focal length of the still zoom lens of the still camera, and according to this focal length, has the same angle of view as the subject captured by the still zoom lens. In order to obtain an image signal indicating the subject, the use pixel area of the image sensor is determined. Then, a subject is displayed on a liquid crystal panel as an electronic viewfinder based on an image signal from the used pixel area.

However, in the configuration disclosed in this publication, the angle of view is limited in an area on the image pickup device. Therefore, when this configuration is applied to a still camera-integrated video camera as it is, either the still camera or the video camera is required. The image was displayed on the electronic viewfinder only at the angle of view where the image was captured. Therefore, when taking a picture with a still camera while taking a picture with a video camera, it is necessary to take a picture without knowing the angle of view of the still zoom lens.

Further, since the zoom magnifications of the video zoom lens and the still zoom lens are individually controlled, the finder lens is also used to adjust the display of the liquid crystal panel to the angle of view of the video zoom lens or the still zoom lens. In this case, there is a problem that the manufacturing cost increases.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a still camera-integrated video camera configured so that the angle of view of the still camera can be confirmed by an electronic viewfinder when an image is captured by the video camera.

[0014]

The present invention has the following features to solve the above-mentioned problems. A still camera unit having a still zoom lens for exposing a still image of a subject to a photographic film, a still zoom operation means for changing a zoom magnification of the still zoom lens, and a video zoom A video camera unit that records an image signal of a moving image captured by a lens on a magnetic tape, a video zoom operation unit that changes a zoom magnification of the video zoom lens, and a still zoom lens and a video zoom lens. An electronic viewfinder having a single focus finder lens having a focal length comparable to the wide angle side, and a liquid crystal panel for displaying an image captured by the single focus finder lens, and a still camera integrated video camera having: Converts optical signals captured by a single focus finder lens into electrical signals In other words, a viewfinder signal processing circuit for generating an image signal to be output to the liquid crystal panel, and an image signal output from the viewfinder signal processing circuit were operated by the still zoom operation means or the video zoom operation means. An image scaling operation circuit for calculating a magnification ratio of an image corresponding to the angle of view of the zoom magnification, wherein an image corresponding to the angle of view captured at the zoom magnification of the still zoom lens or the video zoom lens is displayed on the liquid crystal. It is characterized by being displayed on a panel.

Therefore, according to the first aspect of the present invention, the image signal output from the viewfinder signal processing circuit is converted into an image corresponding to the angle of view of the zoom magnification operated by the still zoom operating means or the video zoom operating means. Can be displayed on the LCD panel by calculating the zoom ratio of the still zoom lens or the zoom angle of the video zoom lens, so the still zoom using the single focus finder lens The entire angle of view captured by the lens and the zoom lens for video can be projected, and an image of the angle of view set for each zoom lens can be displayed on the liquid crystal panel using electronic zoom.

According to a second aspect of the present invention, in the still camera-integrated video camera according to the first aspect, the view finder is operated in accordance with a zoom magnification operated by the still zoom operating means or the video zoom operating means. An image signal processing circuit for processing the image signal output from the signal processing circuit to thin out the image signal; and an output signal from the signal processing circuit to an output signal from the image scaling operation circuit, the still zoom lens or video zoom. A selection circuit to be inserted as a child screen corresponding to the angle of view of the lens, and displaying an image corresponding to the angle of view of the still zoom lens and the video zoom lens on the liquid crystal panel. is there.

Therefore, according to the second aspect of the present invention, the image signal output from the viewfinder signal processing circuit according to the zoom magnification operated by the still zoom operation means or the video zoom operation means by the image signal processing circuit. In order to insert the output signal from the image signal processing circuit into the output signal from the image scaling operation circuit as a child screen corresponding to the angle of view of the still zoom lens or video zoom lens, An image corresponding to the angle of view of the zoom lens and the video zoom lens can be displayed on the liquid crystal panel, and even when shooting with the still camera unit while shooting with the video camera unit, the still zoom lens and video The angle of view of the zoom lens can be checked at the same time.

According to a third aspect of the present invention, in the still camera-integrated video camera according to the second aspect, an insertion circuit for inserting a character or a picture or the like into the image signal output from the viewfinder signal processing circuit is provided. It is characterized by having.

Therefore, according to the third aspect of the present invention, since the insertion circuit for inserting a character or a picture into the image signal output from the viewfinder signal processing circuit is provided, a still image can be obtained while the video camera unit is taking an image. Even when both images are simultaneously displayed on the liquid crystal panel when shooting with the camera unit, the image of the video camera unit and the image of the still camera unit can be distinguished.

[0020]

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, and a liquid crystal panel (LCD display) 12 as an electronic viewfinder is provided on the rear surface. The liquid crystal panel 12 selectively displays either a parent screen in which an image is displayed on the entire screen according to each operation mode or a parent-child screen in which a child screen smaller than the parent screen is inserted, as described later. Is done. Further, on the upper surface of the video camera body 10, a video camera imaging switch button 13, a video camera power switch 14, a zoom switch 15 for operating the video zoom lens 11 to a wide angle side or a telephoto side, and various functions of the video camera ( Various operation buttons 16 for operating recording / reproduction, stop, fast forward, rewind, and other operation functions) are provided.

A video AF mechanism (not shown) for measuring the distance to the subject captured by the video zoom lens 11 is built in the video camera body 10. Note that this AF mechanism obtains distance data as a result of focusing, but since this is a well-known AF mechanism for video cameras, its detailed configuration is omitted here.

A still camera body 20 is mounted on the front right side of the video camera body 10, and an electronic viewfinder 21 of the still camera section is provided. As the finder lens 21a of the electronic viewfinder 21, a single focus lens having a shorter focal length than the wide-angle side of the video zoom lens 11 and the still zoom lens 22 is used. Therefore, the electronic viewfinder 21 can cover the entire zoom range that can be captured by the video zoom lens 11 and the still zoom lens 22.

The electronic viewfinder section 21 is a circuit block including the finder lens 21a, the viewfinder signal processing circuit 72, a switch, and the like, and has the same configuration as a still camera section 32 and a video camera section 34 described later. . The still camera body 20 is provided with a still zoom lens 22, a distance measuring infrared light emitting element 23, a distance measuring infrared light receiving element 24, a strobe 25, and the like. Also,
A shutter button 17 for a still camera and a power switch 1 for a still camera are provided below the video zoom lens 11.
8 and a still camera operation unit such as a zoom switch 19 for operating the still zoom lens 22 to the wide angle side or the telephoto side.

The infrared light emitting element 23 for distance measurement and the infrared light receiving element 24 for distance measurement constitute a distance measuring device 26, and will be described later based on distance measuring data measured by the distance measuring device 26. Next, the infrared AF mechanism (automatic focus 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 is emitted by the infrared light emitting element for distance measurement 23, the light is reflected on the subject and is reflected by the red light for distance measurement. The position shift when light is received by the external light receiving element 24 is measured, and the distance to the subject is obtained based on the principle of triangulation.

The still camera body 20 has a lid 27 rotatably mounted on the front 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 configuration of a still camera-integrated video camera according to the present invention. The video camera with a built-in still camera according to the present embodiment includes a still camera unit 32 that captures a still image of a subject with a still zoom lens 22 and records the still image on a film 31, and a video zoom lens 1
1 and a video camera unit 34 that captures a moving image of a subject and records it on a magnetic tape 33.

First, the configuration of the still camera section 32 will be described, and then the configuration of the video camera section 34 will be described. In the still camera section 32, light from a subject is incident on a shutter 36 via a zoom lens 22 and a diaphragm 35. Then, when photographing, 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 (exposed) on the film 31.

The still zoom lens 22 has a zoom drive unit 41 and a focus drive unit 42, and the zoom drive unit 4
1 controls the zoom magnification, and the focus driving unit 42
Performs focus control on the subject. The zoom drive section 41 has a motor (not shown) for driving the zoom lens 22 to the wide angle side or the telephoto side, and is driven and controlled by a drive signal from a still camera zoom control circuit 43. Therefore, the zoom drive unit 41 is driven in accordance with 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 a zoom magnification is set by operating the zoom switch 19, a zoom operation described later is performed according to the zoom magnification setting. The information (zoom magnification) is generated and supplied to the still camera zoom control circuit 43.

The focus driving section 42 includes a control circuit 4
The still zoom lens 22 is driven in accordance with the focus control signal supplied from 4 to perform focus control.
The still zoom lens 22 includes an aperture driving unit 5.
7, a shutter drive unit 58 is provided.

An aperture driving section 57 drives the aperture 35 according to an aperture control signal supplied from the control circuit 44 to control the amount of light incident on the film 31. Further, the shutter driving section 58 controls the release of the shutter 36 according to a shutter control signal supplied from the control circuit 44.

A measuring section 56 for measuring the brightness of the subject and the distance to the subject is connected to the control circuit 44.
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 in accordance with the brightness information of the subject supplied from the measurement unit 56.
An aperture control signal and a shutter control signal are generated so that the amount of light from a subject incident on
By supplying the exposure control signal to the shutter drive unit 58, the exposure amount and the exposure time of the film 31 are controlled, and so-called exposure control is performed.

The control circuit 44 generates a focus control signal so that an 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 sends the focus control signal to the focus driving section 42. By supplying the power, the still zoom lens 22 is driven to control the position of the lens, and so-called focus control is performed.

Next, the configuration 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 and the like via the video zoom lens 11 and the aperture 60, and converts the image 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.

The audio signal around the subject captured by the microphone 63 is supplied to an audio 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 applies the 8 mm video signal to the magnetic tape 33. , VHS method.

The video zoom lens 11 is provided with a zoom drive 66 for moving the lens to control the zoom magnification of the subject and a focus drive 67 for moving the lens to control the focus of the subject. Also,
The zoom driving unit 66 is connected to the video camera zoom control circuit 68, and moves the lens according to a zoom driving 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
, And supplies the zoom drive signal to the zoom drive unit 66. Further, the focus driving section 67 includes the control circuit 44
The focus control is performed by moving the lens of the video zoom lens 11 in accordance with the focus control signal (AF signal) supplied from.

The control circuit 44 generates zoom information according to the zoom magnification set by operating the zoom switch 15 by a zoom control function described later, and supplies this zoom information to the video camera zoom control circuit 68. An aperture driving unit 69 that drives the aperture 60 controls the aperture amount of the aperture 60 according to an aperture control signal (AE signal) supplied from the control circuit 44, and controls the amount of light incident on 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 measurement unit 56,
The video camera signal processing circuit 6
In step 1, the amount of light supplied to the CCD image sensor that converts light into an electric signal is controlled, and so-called exposure control is performed.

The video camera signal converted by the video camera signal processing circuit 61 is
Is supplied to the selection circuit 70 via the. Then, as described later, the signal selected by the selection circuit 70 is transmitted to the character insertion circuit 7.
1 is supplied. The character insertion circuit 71 creates an inserted character or picture according to the information from the control circuit 44, and inserts the created inserted letter or picture on the screen of the liquid crystal panel 12 to be displayed.

Therefore, even if the image captured by the video zoom lens 11 and the image captured by the still zoom lens 22 are simultaneously displayed on the liquid crystal panel 12, the still image is displayed on the screen of the liquid crystal panel 12 by the character insertion circuit 71. A character or picture indicating that the screen is a screen or a video screen can be displayed. Therefore, even if two images are displayed on the screen of the liquid crystal panel 12, both images are simultaneously displayed on the screen of the liquid crystal panel 12 when the still camera unit 32 shoots while the video camera unit 34 is shooting. Even when displayed, the image of the video camera unit 34 and the image of the still camera unit 32 can be easily identified.

Further, in this embodiment, the character insertion circuit 71
Accordingly, the zoom magnification of the zoom lenses 11 and 22 and the angle of view of the still camera can be displayed on a part of the screen of the liquid crystal panel 12. In addition to the zoom magnification, the character insertion circuit 71 provides a date and time, a time, and a VTR such as PLAY and REC.
The information such as characters and pictures to be recorded such as the mode can be inserted into the liquid crystal panel 12.

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 unit 34 and the still camera unit 32 in accordance with the operation of each switch, in addition to a zoom control process described later.

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

That is, the lens diameter of the video camera section 34 can be made smaller than that of the still camera section 32. If a lens having the same zoom magnification is used, the video camera lens can be made smaller. For example, the zoom lens attached to the still camera unit 32 is 35 to 70 mm
If the zoom is twice as large as
This means that a 105 mm zoom lens with a 3x zoom can be mounted.

For this reason, the still camera section 32 has 35 to 7
When a 0 mm zoom lens is mounted and a 35-105 mm zoom lens is mounted on the video camera section 34, the angle of view of the still camera section 32 and the angle of view of the video camera section 34 can be matched. Therefore, in the still camera unit 32 and the video camera unit 34, an area (35 to 70 mm) where the zoom magnification can be matched and an area (70 to 105 mm) where the zoom magnification is different are generated.

The control circuit 44 includes a zoom magnification of the still camera unit 32 detected by the still camera zoom control circuit 43 and a video camera zoom control circuit 68 which detects the zoom magnification of the still camera unit 32 in order to facilitate still photography during video imaging. A still angle display program for displaying an image corresponding to the angle of view taken by the zoom lens 22 of the still camera unit 32 as a small screen based on the zoom ratio with the zoom magnification of the video camera unit 34; The zoom magnification of the LCD panel 32 and the zoom magnification of the video camera
And a zoom magnification display program to be displayed on the screen.

In the reproduction 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 the demodulated signal to the output terminal Tou.
Output from t to an external device (external monitor, etc.). At this time, a reproduced image signal is supplied to the liquid crystal panel 12 from the video signal processing circuit 62, and a reproduced image reproduced by the magnetic head 65 is displayed.

Reference numeral 72 denotes a viewfinder signal processing circuit.
The light condensed by the finder lens 21a of the liquid crystal panel unit 21 is converted into an electric signal and output as an image signal. Reference numeral 73 denotes an image signal processing circuit which thins out a signal for converting an image signal output from the viewfinder signal processing circuit 72 into a small screen on the viewfinder. At this time,
The angle of view is adjusted to the angle of view captured by the still camera unit 32. For example, when both images are simultaneously displayed on the screen of the liquid crystal panel 12 when photographing is performed by the still camera unit 32 during imaging by the video camera unit 34, an image display portion corresponding to the still camera unit 32 is displayed. It will be thinned out.

Reference numeral 74 denotes an image scaling conversion circuit, which is a control circuit 44.
Viewfinder signal processing circuit 7 based on a command from
An electronic zoom process is performed to change the magnification so that the image signal output from the camera 2 has the angle of view captured by the still camera unit 32 or the angle of view captured by the video camera unit 34.

The selection circuit 70 includes the image signal a output from the image signal processing circuit 73 and the image scaling conversion circuit 7.
The image signal b output from the control circuit 44 is input, and the signal is selected by a command from the control circuit 44 to select the signal.
Output to 1. For example, when the power switch 14 and the imaging switch 13 of the video camera unit 34 are turned on, the image scaling conversion circuit 74 is switched to the viewfinder signal processing circuit 72.
Is converted into an angle of view corresponding to the zoom magnification of the video zoom lens 11 by electronic zoom, and the selection circuit 70 selects the signal b from the image scaling conversion circuit 74. Therefore, the liquid crystal panel 12 includes the video camera unit 3
4, the same image as the image captured is displayed.

However, when the power switch 18 of the still camera section 32 is turned on during video shooting, the selection circuit 70 is switched to the image signal processing circuit 73 and the image scaling conversion circuit 7.
4. Signals a and b from 4 are selected. Therefore, as shown in FIG. 3, an image A captured by the video camera unit 34 is displayed on the liquid crystal panel 12 as a main screen, and a still image captured by the still camera unit 32 is displayed at the upper left of the image A. Is inserted and displayed.
When reproducing an image magnetically recorded on the magnetic tape 33, the selection circuit 70 selects the signal c from the video signal processing circuit 62 and causes the liquid crystal panel 12 to display the reproduced image.

Since the finder lens 21a is set at a wider angle side than the still zoom lens 22, an image having an angle of view corresponding to the zoom magnification of the still zoom lens 22 is obtained from the image signal captured by the video camera unit 34. Screen B can be created. That is, since the finder lens 21a is a lens on the wider angle side than the video zoom lens 11 and the still zoom lens 22, the liquid crystal panel 12 captures and shoots the image regardless of the angle of view of the zoom lenses 11 and 22. The displayed image can be displayed, and the margin due to the difference in the angle of view does not appear on the child screen.

On the screen of the liquid crystal panel 12, the zoom magnification of the video camera section 34 and the zoom magnification of the still camera section 32 are inserted and displayed by the character insertion circuit 71, as shown in FIG. Therefore, the liquid crystal panel 1
The user can check the zoom magnification of the video camera unit 34 and the zoom magnification of the still camera unit 32 while looking at FIG.

Next, the processing executed by the control circuit 44 will be described with reference to the flowchart of FIG. In step S1 (hereinafter, "step" is omitted), it is checked whether the power switch 14 of the video camera unit 34 is on. In S1, if the power switch 14 of the video camera unit 34 is off, the process proceeds to S2 and checks whether the power switch 18 of the still camera unit 32 is turned on. When the power switch 18 of the still camera unit 32 is off, the process returns to S1 and enters a standby state in which the processes of S1 and S2 are repeated.

When the power switch 14 of the video camera section 34 is turned on in S1, the process proceeds to S3.
The zoom magnification A as the zoom information of the video zoom lens 11 is read. In the next S4, the finder image captured by the finder lens 21a is scaled to an image having an angle of view corresponding to the zoom magnification of the video zoom lens 11, and the image A is displayed on the liquid crystal panel 12.

As a result, the same image as the image picked up by the video camera unit 34 is displayed on the liquid crystal panel 12, and the image picked up by the video camera unit 34 and the angle of view can be confirmed on the liquid crystal panel 12. Video camera unit 3
When the imaging switch 13 is turned on, the recording mode is set and the image signal is magnetically recorded on the magnetic tape 33 by the magnetic head 65. Further, on the screen of the liquid crystal panel 12, the zoom magnification of the video camera unit 34 is displayed.

In the next S5, it is checked whether or not the power switch 18 of the still camera section 32 has been turned on. If the still camera unit 32
When the power switch 18 is off, the process proceeds to S6,
It is checked whether the power switch 14 of the video camera unit 34 has been turned off.

In S6, if the power switch 14 of the video camera section 34 is ON, the process returns to S4, and the imaging by the video camera section 34 is continuously performed. However, when the power switch 14 of the video camera unit 34 is turned off in S6, the liquid crystal panel 12 is erased and the current processing is terminated.

In step S5, when the power switch 18 of the still camera unit 32 is turned on,
The setting is made so that still shooting during video shooting can be performed.
Then, the flow shifts from S5 to S8 to read the zoom magnification B as the zoom information of the zoom lens 22.

In the next step S9, a small screen B composed of the same image as the still image photographed by the zoom lens 22 is created. Then, the process proceeds to S10, where the image A captured by the zoom lens 11 of the video camera unit 34 is displayed as a parent screen on the screen of the liquid crystal panel 12 as shown in FIG. The same child screen B as the still image captured by the zoom lens 22 of the camera unit 32 is inserted to display the parent / child screen. Therefore, the image A captured by the video camera unit 34 can be confirmed on the screen of the liquid crystal panel 12, and the image of the still camera unit 32 and the image without parallax can be simultaneously viewed.

By looking at the child screen B displayed on the screen of the liquid crystal panel 12, it is possible to confirm the angle of view that can be taken by the still camera unit 32 even while the video camera unit 34 is taking an image. Still images can be taken without missing.

The zoom magnification of the still camera unit 32 is displayed near the child screen B. As described above, the zoom magnification of the still camera unit 32 and the zoom magnification of the video camera unit 34 are displayed on the liquid crystal panel 12, so that the video camera unit 34 and the still camera unit 32 You can see the difference in zoom magnification. Therefore, even if there is a difference in the size of each image displayed on the liquid crystal panel 12, video imaging and still imaging can be performed without any problem.

When the shutter button 17 is pressed,
The shutter 36 opens and closes at a shutter speed corresponding to the brightness at that time, and the image of the subject incident via the zoom lens 22 is formed on the film 31 and recorded. In the next S11, the power switch 18 of the still camera unit 32
Check if has been operated off. This S1
If the power switch 18 of the still camera unit 32 is turned on in S1, the process proceeds to S12 and the video camera unit 3
It is determined whether the power switch 14 of No. 4 has been turned off. If the power switch 14 of the video camera unit 34 remains ON, the process returns to S3, and the processes after S3 are repeated.

In S12, when the power switch 14 of the video camera unit 34 is turned off,
The process proceeds to S13 described below. However, in step S11, when the power switch 18 of the still camera unit 32 is turned off, the process shifts to step S6 to execute the process in step S6.

If the power switch 18 of the still camera unit 32 is turned on in S2, the process proceeds to S1.
Then, the process proceeds to step 3, wherein the zoom magnification B of the zoom lens 22 is read. Further, in the next S14, the finder lens 21a
Is changed to an image having an angle of view corresponding to the zoom magnification of the still zoom lens 22. This allows
In the next step S15, an image having an angle of view corresponding to the zoom magnification of the zoom lens 22 of the still camera unit 32 is displayed on the entire surface of the liquid crystal panel 12 on the screen of the liquid crystal panel 12. Therefore,
On the liquid crystal panel 12, the same image as the still image captured by the still camera unit 32 is displayed.

In this case, the liquid crystal panel 12 becomes a finder dedicated to the still camera unit 32, and the entire screen can be used as a finder, so that the subject can be easily seen and the photographing can be easily performed. Therefore, a still image can be taken while looking at the liquid crystal panel 12 even at times other than video imaging. The screen of the liquid crystal panel 12 includes:
The zoom magnification of the still camera unit 32 is displayed.

Then, in the next S16, it is determined whether or not the power switch 14 of the video camera unit 34 has been turned on. When the power switch 14 of the video camera unit 34 is turned on in S16, the process proceeds to S17, where the zoom magnification A as the zoom information of the video zoom lens 11 is read. Then, in the next S18, a small screen B composed of the same image as the still image captured by the zoom lens 22 is created. Then, the process proceeds to S19, where the video camera unit 3 is displayed on the screen of the liquid crystal panel 12 as shown in FIG.
In addition to displaying the image A captured by the zoom lens 11 of 4 as a parent screen, a child screen B identical to the still image captured by the zoom lens 22 of the still camera unit 32 is inserted and displayed at the upper left of the image A. Let it.

In the next step S20, it is checked whether or not the power switch 18 of the still camera section 32 has been turned off. In S20, when the power switch 18 of the still camera unit 32 is ON, the process returns to S13 described above and executes the processes after S13. However, when the power switch 18 of the still camera unit 32 is turned off in S20, the process proceeds to S21, and it is determined whether the power switch 14 of the video camera unit 34 is turned off.

If the power switch 14 of the video camera section 34 remains ON in S21, the flow returns to S3 to execute only the video imaging, and the processing after S3 is executed. However, in step S21, when the power switch 14 of the video camera unit 34 is turned off, the screen of the liquid crystal panel 12 is erased, and the current process ends.

As described above, when taking a picture with the still camera section 32 while taking a picture with the video camera section 34, or when taking a picture with the video camera section 34 while taking a picture with the still camera section 32, The image A captured by the zoom lens 11 of the video camera unit 34 is displayed on the liquid crystal panel 12 as a parent screen, and the same image as the still image captured by the zoom lens 22 of the still camera unit 32 is displayed on the child screen. B is displayed.

Therefore, even when still shooting is performed during video shooting, or when video shooting is performed during still shooting, video shooting and still shooting can be performed simultaneously while viewing the screen of the liquid crystal panel 12. Therefore, even when the image is captured by the video camera unit 34, the still camera unit 32
Still images can be shot without missing a photo opportunity.

In the above embodiment, the liquid crystal panel 12 is provided on the back surface of the video camera body 10. However, the present invention is not limited to this, and the liquid crystal panel 12 may be provided at another position. Needless to say, the present invention can be applied also to this. 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 liquid crystal panel 12 as a parent screen, and the zoom lens 22 of the still camera unit 32 is displayed on the upper left of the image A. The display pattern for displaying the sub-screen B corresponding to the angle of view has been described as an example. However, the present invention is not limited to this, and the sub-screen B may be displayed at another position (upper right, lower left, upper left, etc. of the screen). May be.

[0075]

As described above, according to the first aspect of the present invention,
The image signal output from the viewfinder signal processing circuit is used to calculate the magnification of the image corresponding to the angle of view of the zoom magnification operated by the still zoom operation means or the video zoom operation means, and the still zoom lens or video is used. Since an image corresponding to the angle of view captured at the zoom magnification of the zoom lens can be displayed on the liquid crystal panel, the entire angle of view captured by the still zoom lens and video zoom lens is projected using a single focus finder lens. ,
By using the electronic zoom, an image having an angle of view set for each zoom lens can be displayed on the liquid crystal panel. For this reason, it is not necessary to make the single focus finder lens a lens on the wider angle side than the other zoom lenses, and to display a margin portion due to a difference in angle of view on the liquid crystal panel. Further, the manufacturing cost can be reduced as compared with the configuration using a zoom lens as the finder lens.

According to the second aspect of the present invention, the image signal output from the viewfinder signal processing circuit according to the zoom magnification operated by the still zoom operation means or the video zoom operation means by the image signal processing circuit. In order to insert the output signal from the image signal processing circuit into the output signal from the image scaling operation circuit as a child screen corresponding to the angle of view of the still zoom lens or video zoom lens, An image corresponding to the angle of view of the zoom lens and the video zoom lens can be displayed on the liquid crystal panel, and even when shooting with the still camera unit while shooting with the video camera unit, the still zoom lens and video The angle of view of the zoom lens can be checked at the same time. Therefore, there is no chance of missing a still photography shutter during video imaging.

According to the third aspect of the present invention, since the insertion circuit for inserting a character or a picture into the image signal output from the viewfinder signal processing circuit is provided, a still image can be obtained while the video camera is taking an image. Even when both images are simultaneously displayed on the liquid crystal panel when shooting with the camera unit, the image of the video camera unit and the image of the still camera unit can be distinguished.

[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 shows a screen of a liquid crystal panel 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. 4 is a flowchart illustrating a process executed by a control circuit.

[Explanation of symbols]

 Reference Signs List 10 video camera body 11, 22 zoom lens 12 liquid crystal panel 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 body 21 Electronic viewfinder 32 Still camera 34 Video camera 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 Selection circuit 71 Character Insertion circuit 72 Viewfinder signal processing circuit 73 Image signal processing circuit 74 Image scaling conversion circuit

Claims (3)

(57) [Claims] A still camera unit having a still zoom lens for exposing a still image of a subject to a photographic film;
A still zoom operation unit for changing a zoom magnification of the still zoom lens, a video camera unit for recording an image signal of a moving image captured by the video zoom lens on a magnetic tape, and a zoom magnification of the video zoom lens. A video zoom operation unit to be changed, an electronic viewfinder having a single focus finder lens having a focal length approximately equal to the wide angle side of the still zoom lens and the video zoom lens, and captured by the single focus finder lens. And a liquid crystal panel for displaying a captured image. A view for converting an optical signal captured by the single focus finder lens into an electric signal and generating an image signal to be output to the liquid crystal panel. Viewfinder signal processing circuit, and viewfinder signal processing circuit An image scaling operation circuit for calculating a magnification of an image corresponding to an angle of view of a zoom magnification operated by the still zoom operation means or the video zoom operation means, the image signal output from the circuit, A still camera-integrated video camera, wherein an image corresponding to an angle of view captured at a zoom magnification of a still zoom lens or a video zoom lens is displayed on the liquid crystal panel. 2. The still camera-integrated video camera according to claim 1, wherein the video signal is output from the viewfinder signal processing circuit according to a zoom magnification operated by the still zoom operation means or the video zoom operation means. An image signal processing circuit for processing so as to thin out an image signal; and an output signal from the image signal processing circuit corresponding to an output signal from the image scaling operation circuit corresponding to an angle of view of the still zoom lens or video zoom lens. And a selection circuit that is inserted as a small screen to be displayed, wherein an image corresponding to the angle of view of the still zoom lens and the video zoom lens is displayed on the liquid crystal panel. 3. The still camera-integrated video camera according to claim 2, further comprising an insertion circuit for inserting a character or a picture into an image signal output from the viewfinder signal processing circuit. Integrated video camera.