JPH09186913A - Video camera integrated with still camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display an image with a same field angle as that of an image caught by a still zoom lens and a video zoom lens on a liquid crystal display panel. SOLUTION: A finder image caught by an electronic view finder section 21 is displayed on a liquid crystal display panel 12 and a zoom lens 21a of the electronic view finder section 21 is driven so as to have a zoom magnification of a video zoom lens 22 in the case of video image pickup and driven so as to have a zoom magnification of a still zoom lens 11 in the case of still image pickup. In the case that the video and still image pickup are both conducted simultaneously, the zoom lens 21a of the electronic view finder section 21 is driven so as to have a zoom magnification of the video zoom lens 22 or the still zoom lens in the wide angle mode. A wide angle image is displayed on the liquid crystal display panel 12 and the image at the telescopic position is displayed as a slave image pattern.

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. A still camera equipped with an electronic viewfinder is disclosed in Japanese Patent Laid-Open No. 3-259130.
It is disclosed in Japanese Patent Application Publication No. In this publication, the lens of the still camera is a zoom lens, whereas a single focal length lens is used as the finder lens of the electronic viewfinder, and the image captured by the finder lens is converted into an electric signal. CCD as the image sensor
(Image sensor) is used.

This structure does not have a video camera, but detects the focal length of the still zoom lens of the still camera, and in accordance with this focal length, 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 pixel area used by the image sensor is determined. Then, the subject is displayed on the liquid crystal panel as the electronic viewfinder based on the image signal from the used pixel area.

However, in the configuration of this publication, the angle of view is limited in the area on the image pickup element. 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 used. It was only displayed in the electronic viewfinder with the angle of view captured by Ka. Therefore, when shooting with a still camera while shooting with a video camera, it was necessary to shoot without knowing the angle of view of the still zoom lens.

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

[0013]

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 operating means for changing a zoom magnification of the still zoom lens, and a video zoom. A video camera section for recording an image signal of a moving image picked up by a lens on a magnetic tape, a video zoom operation means for changing the zoom magnification of the video zoom lens, and an optical signal captured by a finder lens for conversion into an image signal. In the still camera-integrated video camera having an electronic viewfinder section for displaying the image captured by the electronic viewfinder section, the still zoom lens provided as a finder lens of the electronic viewfinder section. And the same focal length as the video zoom lens And a viewfinder signal processing circuit that converts an optical signal captured by the zoom lens for the viewfinder into an electric signal and generates an image signal to be output to the liquid crystal panel, and the zoom lens for the viewfinder. And a zoom magnification adjusting means for adjusting the zoom magnification of the still zoom zoom operating means or the zoom magnification operated by the video zoom operating means to the zoom magnification of the still zoom lens or the video zoom lens. An image corresponding to the angle of view is displayed on the liquid crystal panel.

Therefore, according to the first aspect of the present invention, the zoom magnification of the viewfinder zoom lens is adjusted to the zoom magnification operated by the still zoom operating means or the video zoom operating means and captured by the electronic viewfinder section. Since the captured image can be displayed on the liquid crystal panel, an image having the same angle of view as the image captured by the still zoom lens and the video zoom lens can be displayed on the liquid crystal panel. Moreover, parallax error can be eliminated, and the image displayed on the liquid crystal panel can be captured by the still camera unit.

According to a second aspect of the invention, in the still camera-integrated video camera according to the first aspect, the zoom magnification adjusting means sets the zoom magnification of the zoom lens for the viewfinder to the still zoom lens or It is characterized in that it is matched with the zoom magnification on the wide-angle side of the angle of view captured by the video zoom lens.

Therefore, according to the invention of claim 2, it is possible to display all the images captured by the still zoom lens or the video zoom lens. According to a third aspect of the present invention, in the still camera-integrated video camera according to the second aspect, an angle of view obtained by capturing the signal output from the viewfinder signal processing circuit by the still zoom lens or the video zoom lens. Among these, an image processing circuit for processing into an image having an angle of view at the zoom magnification on the telephoto side and displaying the image as a child screen on the liquid crystal panel is provided.

Therefore, according to the third aspect of the present invention, the image having the angle of view at the zoom magnification on the telephoto side of the angle of view captured by the still zoom lens or the video zoom lens is displayed as a sub-screen on the liquid crystal panel. Therefore, even when shooting with the still camera unit while shooting with the video camera unit, the angle of view of the still zoom lens and the video zoom lens can be checked at the same time. Therefore, the shutter chance of the still camera unit is not missed even when the image is taken by the video camera unit.

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

Therefore, according to the invention of claim 4, since a character or a pattern can be inserted into the image signal output from the viewfinder signal processing circuit, the still camera unit is picked up while the video camera unit is picking up an image. When shooting with, even if both images are simultaneously displayed on the liquid crystal panel, 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 of the main body, and a liquid crystal panel (LCD display) 12 as an electronic viewfinder is provided on the rear face thereof. As will be described later, the liquid crystal panel 12 is selectively provided with a parent screen for displaying an image 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 into the parent screen. Is displayed in. Also, the video camera body 1
On the upper surface of 0, a video camera imaging switch button 13, a video camera power switch 14, and a zoom switch 15 for operating the video zoom lens 11 to the wide-angle side or the telephoto side.
Further, various operation buttons 16 for operating each function of the video camera (operation functions such as recording / reproduction, stop, fast forward, rewind, etc.) 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 electronic viewfinder section 21 is provided. The electronic viewfinder section 21 is provided with a finder zoom lens 21a. The viewfinder zoom lens 21a has a zoom magnification similar to that of the video zoom lens 11 and the still zoom lens 22, and is on the wide-angle side of the video zoom lens 11 or the still zoom lens 22 as described later. It is controlled to be the same as the zoom magnification.

Therefore, the electronic viewfinder section 21 can cover the entire zoom range that can be captured by the video zoom lens 11 and the still zoom lens 22. Further, since the image captured by the viewfinder zoom lens 21a is displayed on the liquid crystal panel 12, the subject can be seen with a sharper image quality than an image obtained by so-called electronic zoom.

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. Below the video zoom lens 11, a shutter button 17 for a still camera, a power switch 18 for a still camera,
Further, 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 is provided.

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, and after the infrared light emitting element 23 for distance measurement emits infrared light, the infrared light is reflected by the object and the distance measurement red light is emitted. 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 unit 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 unit 56, and the focus drive unit 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.

The audio signal around the subject captured by the microphone 63 is supplied to the 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 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.

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, many image pickup devices used in the video camera section 34 are CCD image sensors, and the sizes thereof are 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 mounted on the still camera unit 32 is 35 to 70 mm
If the zoom is set to 2 times,
A 105mm 3x zoom lens can be attached.

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. And a zoom ratio of the zoom ratio of the video camera unit 34 to display a wide-angle side image on the liquid crystal panel 12 and a telephoto side image on the liquid crystal panel 12 as a small screen, and a still screen display program. The zoom magnification of the camera unit 32 and the zoom magnification of the video camera unit 34 are set to the liquid crystal panel 12.
The zoom magnification display program to be displayed on 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 liquid crystal panel 12, and the reproduced image reproduced by the magnetic head 65 is displayed.

Next, the structure of the electronic viewfinder section 21 will be described. The electronic viewfinder section 21 displays the image of the subject on the viewfinder zoom lens 21a and the diaphragm 70.
Is supplied to a viewfinder signal processing circuit 71 including a CCD (charge coupled device) image sensor or the like and is converted into an electric signal. Further, in the viewfinder zoom lens 21a, a zoom drive unit 72 that moves the lens to control the zoom magnification of the subject and a focus drive unit 7 that moves the lens to control the focus of the subject.
3 are provided. The zoom drive unit 72 is also connected to a viewfinder zoom lens control circuit 74, and moves the lens in accordance with a zoom drive signal supplied from the viewfinder zoom lens control circuit 74.

The viewfinder zoom lens control circuit 74 detects the zoom magnification of the viewfinder zoom lens 21a and generates a zoom drive signal according to the zoom information (zoom magnification) supplied from the control circuit 44. It is supplied to the zoom drive unit 72. Further, the focus drive section 73 moves the lens of the viewfinder zoom lens 21a in accordance with the focus control signal (AF signal) supplied from the control circuit 44 to perform focus control.

The control circuit 44 generates zoom information on the wide angle side according to the zoom magnification set by the operation of the zoom switch 15 or 19 by the zoom control function described later, and this zoom information is used for the viewfinder zoom lens control circuit 74. Supply to. Therefore, the viewfinder zoom lens control circuit 74 adjusts the zoom magnification of the viewfinder zoom lens 21a to the zoom magnification on the wide-angle side of the angle of view captured by the still zoom lens 22 or the video zoom lens 11. Therefore, all the images captured by the still zoom lens 22 or the video zoom lens 11 can be displayed on the liquid crystal panel 12.

The diaphragm driving unit 76 for driving the diaphragm 70 controls the diaphragm amount of the diaphragm 70 according to the diaphragm 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, supplies it to the aperture drive unit 76, and supplies it to the CCD image sensor of the viewfinder signal processing circuit 71. The so-called exposure control is performed by controlling the amount of light emitted.

Further, the viewfinder signal processing circuit 71
The image signal converted by is supplied to the character insertion circuit 78 via the selection circuit 77. The character insertion circuit 78 creates an insertion character or a pattern according to the information from the control circuit 44, and the created insertion character or a pattern is displayed on the liquid crystal panel 12.
Insert it on the screen and display it. Therefore, 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.
Displayed on the LCD panel 12 by the character insertion circuit 78.
A character or a pattern indicating that it is a still screen or a video screen can be displayed on the screen. Therefore, even if two images are displayed on the screen of the liquid crystal panel 12, that is, both images are simultaneously displayed on the liquid crystal panel 1 when the still camera unit 32 captures an image while the video camera unit 34 is capturing the image.
Even when displayed on the second screen, the image of the video camera unit 34 and the image of the still camera unit 32 can be easily identified.

Further, in the present embodiment, the character insertion circuit 78
Thus, the zoom magnifications 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 78 also controls the VTR such as date and time, PLAY, REC, etc.
Information to be recorded, such as the mode, can be inserted into the liquid crystal panel 12.

Reference numeral 79 is a sub-screen processing circuit, which produces an image of the zoom magnification on the wide-angle side of the zoom magnifications of the still zoom lens 22 or the video zoom lens 11. That is,
The small screen processing circuit 79 converts the image signal picked up by the electronic viewfinder unit 21 into the still zoom lens 22.
Of an image corrected to eliminate parallax due to the angle of view according to the zoom magnification of the video zoom lens and the distance between the video zoom lens 11 and the still zoom lens 22, that is, the video zoom lens 11 or the still zoom lens 22.
A sub-screen to be inserted into the liquid crystal panel 12 is created by processing so as to obtain an image with an angle of view corresponding to the zoom magnification operated to the wide-angle side.

Therefore, when the still image zoom lens 22 is operated to the telephoto side while the video zoom lens 11 is operated to the wide-angle side and the video camera unit 34 is taking an image, An image captured by the video camera unit 34 is displayed on the screen of the liquid crystal panel 12, and a child screen of the same image as the still image captured by the still zoom lens 22 is displayed. for that reason,
An image without parallax is displayed on the child screen, and the angle of view taken by the video camera unit 34 and the angle of view taken by the still camera unit 32 can be simultaneously checked while looking at the liquid crystal panel 12.

In this way, the image on the wide angle side is displayed on the liquid crystal panel 12
And the zoom lens 11 and 22 in order to display the image on the telephoto side as a small screen on the liquid crystal panel 12.
It is not necessary to display the blank area that was lacking due to the difference in zoom between and. The signals generated by the viewfinder signal processing circuit 71 and the child screen processing circuit 79 are respectively supplied to the selection circuit 77 and selected by a command from the control circuit 44.
Further, the signal selected by the selection circuit 77 is supplied to the liquid crystal panel 12 via the character insertion circuit 78 and displayed as an image on the screen of the liquid crystal panel 12.

FIGS. 3 to 5 are views of screens displayed on the liquid crystal panel 12. FIG. 3 shows a screen displaying an image B on which the zoom lens is operated on the telephoto side on the liquid crystal panel 12,
FIG. 4 is a screen in which the image A in which the zoom lens is operated to the wide-angle side is displayed on the liquid crystal panel 12, and FIG. 5 is a main screen in which the child screen of the image in which the zoom magnification is operated to the telephoto side is set to the wide-angle side. Shows the parent-child screen inserted in.

For example, when the power switch 14 and the image pickup switch 13 of the video camera section 34 are on, the selection circuit 77 selects the signal b from the viewfinder signal processing circuit 71 by the control signal d from the control circuit 44. Therefore, the same image as the image captured by the video camera unit 34 is displayed on the liquid crystal panel 12.

However, when the power switch 18 of the still camera section 32 is turned on during video image pickup, the selection circuit 77 receives the control signal d from the control circuit 44 and the viewfinder signal processing circuit 71 and the small screen processing circuit 79. The signals b and a from are selected, and the image on the wide-angle side is displayed as the parent screen and the image on the telephoto side is displayed as the child screen. for that reason,
When the zoom magnification of the video zoom lens 11 is set to a wider angle side than the still zoom lens 22, as shown in FIG. 5, the liquid crystal panel 12 displays an image A on the wide angle side captured by the video camera unit 34. In addition to being displayed as a parent screen, a child screen B, which is the same as the still image on the telephoto side captured by the still camera unit 32, is displayed in the upper left of the image A.

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 a wider angle side than the video zoom lens 11, the selection circuit 77 causes the viewfinder signal processing circuit 71 and the small screen processing circuit to operate. The signals b and a from 79 are selected, and the still image on the wide angle side is displayed as the master screen and the video image on the telephoto side is displayed as the slave screen. Therefore, the image A captured by the still zoom lens 22 is displayed on the liquid crystal panel 12 as a parent screen, and the child screen B captured by the video zoom lens 11 is displayed on the upper left of the image A.

Further, as shown in FIG. 5, on the screen of the liquid crystal panel 12, the zoom magnification of the video camera unit 34 and the still camera unit 32 inserted by the character insertion circuit 78 are displayed.
Is displayed. Therefore, the liquid crystal panel 12
While viewing, the zoom magnification of the video camera unit 34 and the zoom magnification of the still camera unit 32 can be confirmed, and two images can be identified. When reproducing the image magnetically recorded on the magnetic tape 33, the selection circuit 77 selects the signal c from the video signal processing circuit 62 to display the reproduced image on the liquid crystal panel 12.

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, when the power switch 14 of the video camera unit 34 is off, the process proceeds to S2 and it is checked whether or not 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 again and enters a standby state in which the processes of S1 and S2 are repeated.

When the power switch 14 of the video camera unit 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. Then, in next step S4, the viewfinder zoom lens 21a is driven so that the zoom magnification of the viewfinder zoom lens 21a matches the zoom magnification A of the video zoom lens 11.

In the next step S5, the image picked up by the viewfinder zoom lens 21a is displayed on the liquid crystal panel 12. As a result, the same image as the image captured by the video camera unit 34 is displayed on the liquid crystal panel 12, and the image captured by the video camera unit 34 and the angle of view can be confirmed on the liquid crystal panel 12. Three
When the image pickup switch 13 of No. 4 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, the zoom magnification of the video camera unit 34 is displayed on the screen of the liquid crystal panel 12.

In the next step S6, 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 of is off, proceed to S7,
It is checked whether or not the power switch 14 of the video camera unit 34 has been turned off.

In S7, when the power switch 14 of the video camera unit 34 is on, the process returns to S5, and the image pickup by the video camera unit 34 is continued. However, when the power switch 14 of the video camera unit 34 is turned off in S7, it is determined that the image capturing by the video camera unit 34 is finished, and the screen of the liquid crystal panel 12 is blanked to terminate the present process. .

In S6, when the power switch 18 of the still camera unit 32 is turned on,
It is set so that still shooting can be performed during video shooting.
Then, the process proceeds from S6 to S9 to read the zoom magnification B as the zoom information of the still zoom lens 22.

In the next step S10, the video zoom lens 1
The zoom magnification A of 1 and the zoom magnification B of the still zoom lens 22 are compared. At this time, when the zoom magnification of the video zoom lens 11 is set to a wider angle side than the still zoom lens 22 (A <B), the process proceeds to S11, and the still zoom lens 22 operated to the telephoto side shoots an image. A sub-picture B composed of the same still image as the still image is created.

Next, in S12, as shown in FIG. 5, the image A captured by the video zoom lens 11 operated to the wide angle side is displayed on the screen of the liquid crystal panel 12 as a main screen, and On the upper left of the image A, the same small screen B as the still image taken by the still zoom lens 22 operated on the telephoto side is displayed. for that reason,
While the video image A captured by the video camera unit 34 can be confirmed on the screen of the liquid crystal panel 12, the still camera unit 3
Two angle of view and a parallax-free still image can be viewed at the same time.

Thus, by using the wide-angle side video image as the main screen and the telephoto side still image as the sub-screen,
A margin portion due to a difference in zoom magnification between the video zoom lens 11 and the still zoom lens 22 is not displayed on the sub screen, and is easy to see.

By looking at the sub-screen B displayed on the screen of the liquid crystal panel 12, the angle of view that can be taken by the still camera unit 32 can be confirmed even during image pickup, so that a still image can be taken without missing a photo opportunity. Can be taken. In addition, in the vicinity of the child screen B, the still camera unit 3
A zoom factor of 2 is displayed.

As described above, since the zoom magnification of the still camera section 32 and the zoom magnification of the video camera section 34 are displayed on the liquid crystal panel 12, the video camera section 34 and the still camera section 34 are picked up by the video camera section 34. The difference in zoom magnification from 32 can be seen. 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 according to the brightness at that time, and the image of the subject incident through the zoom lens 22 is formed on the film 31 and recorded. In the next S13, the power switch 18 of the still camera unit 32
Check if was operated off. This S1
3, when the power switch 18 of the still camera unit 32 is on, the process proceeds to S14 and the video camera unit 3
It is determined whether or not the power switch 14 of No. 4 has been turned off. Then, when the power switch 14 of the video camera unit 34 remains on, the video image pickup and the still image pickup are continued, so that the process returns to S3 and the processes after S3 are repeated.

In S14, when the power switch 14 of the video camera unit 34 is turned off,
Since still photography is continued, the process proceeds to S16 described later. However, in S13, the still camera unit 32
When the power switch 18 is turned off, the video image pickup and the still image pickup are completed, so that the process proceeds to S7 and it is checked whether the power switch 14 of the video camera unit 34 is turned off.

In step S7, when the power switch 14 of the video camera unit 34 is off, the liquid crystal panel 12
The screen of is erased and the processing of this time is ended. Further, in S10, when the zoom magnification of the still zoom lens 22 is set to a wider angle side than the video zoom lens 11 (A> B), the image information of the small screen inserted in the liquid crystal panel 12 is insufficient. , S15, the sub-screen B of the video image captured by the video zoom lens 11 operated to the telephoto side is created.

In this case, in S12, the same image A as the still image photographed by the still zoom lens 22 operated to the wide-angle side is displayed on the screen of the liquid crystal panel 12 as the parent screen, and at the upper left of the image A. Displays the same small screen B as the video image captured by the video zoom lens 11 operated to the telephoto side. Therefore, the still image captured by the still camera unit 32 can be confirmed on the screen of the liquid crystal panel 12, and the same image as the video image of the video camera unit 34 can be viewed at the same time.

Further, even if the zoom magnification is changed by the zoom operation and the still image and the video image are interchanged, the zoom magnification of the still camera unit 32 and the zoom magnification of the video camera unit 34 are displayed on the screen of the liquid crystal panel 12. Because
Do not confuse the displayed image. In this way, the still image on the wide-angle side is used as the main screen and the video image on the telephoto side is used as the sub-screen. The part is not displayed on the inset screen, making it easier to see.

Therefore, even when the angle of view of the still zoom lens 22 is set to be wider than that of the video zoom lens 11, the still image taken by the still camera unit 32 should be checked while checking the liquid crystal panel 12. You can When the power switch 18 of the still camera unit 32 is turned on in S2, the process proceeds to S16, and the zoom magnification B of the still zoom lens 22 is read. Further, in the next step S17, the zoom magnification of the viewfinder zoom lens 21a is set to the still zoom lens 2a.
The viewfinder zoom lens 21a is driven so as to match the zoom magnification B of 2.

As a result, in the next step S18, the viewfinder zoom lens 21a is displayed on the screen of the liquid crystal panel 12.
The captured image is displayed. Therefore, the liquid crystal panel 1
2 is a still zoom lens 2 of the still camera unit 32.
An image having an angle of view corresponding to the zoom magnification of 2 is displayed.

In this case, the liquid crystal panel 12 serves as a dedicated viewfinder for the still camera section 32, and since the entire screen can be used as a viewfinder, the subject can be easily seen and shooting can be performed easily. Therefore, it is possible to take a still image while looking at the liquid crystal panel 12 even when the video is not taken. Also, on the screen of the liquid crystal panel 12,
The zoom magnification of the still camera unit 32 is displayed.

Then, in S19, it is checked whether the power switch 14 of the video camera unit 34 is on. In this S19, when the power switch 14 of the video camera unit 34 is on, the process proceeds to S20,
The zoom magnification A as the zoom information of the video zoom lens 11 is read.

At the next step S21, the zoom lens 1 for video is used.
The zoom magnification A of 1 and the zoom magnification B of the still zoom lens 22 are compared. At this time, if the zoom magnification of the still zoom lens 22 is set to a wider angle side than the video zoom lens 11 (A> B), the process proceeds to S22, and the image is captured by the video zoom lens 11 operated to the telephoto side. A sub-screen B made up of the same video image as that of the image is created.

Then, in S23, the still zoom lens 2 operated to the wide angle side is displayed on the screen of the liquid crystal panel 12.
The same image as the still image photographed by 2 is displayed as a parent screen, and the same child screen as the video image captured by the video zoom lens 11 operated to the telephoto side is displayed on the upper left of the screen of the liquid crystal panel 12. Is displayed. Therefore, the video image captured by the video camera unit 34 can be confirmed on the screen of the liquid crystal panel 12, and the angle of view of the still camera unit 32 and the still image without parallax can be viewed at the same time.

In the next step S24, it is checked whether or not the power switch 18 of the still camera unit 32 has been turned off. In S24, when the power switch 18 of the still camera unit 32 is on, the process returns to S16 described above, and the processes of S16 and thereafter are executed. However, in S24, when the power switch 18 of the still camera unit 32 is off, the process proceeds to S25, and it is determined whether or not the power switch 14 of the video camera unit 34 is operated to be off.

When the power switch 14 of the video camera unit 34 remains on in S25, the still image capturing has been completed, so the process returns to S3 and the processes in S3 and subsequent steps are repeated. Further, in S25, when the power switch 14 of the video camera unit 34 is turned off, the screen of the liquid crystal panel 12 is blanked and the current process is terminated.

As described above, when the video camera section 34 and the still camera section 32 simultaneously pick up and shoot, the wide-angle side image is displayed as the main screen on the screen of the liquid crystal panel 12 according to the comparison of zoom magnifications. Since the image on the telephoto side is displayed as a sub-screen, even when still shooting is performed during video shooting, or even when video shooting is performed during still shooting, the video image and the still image are simultaneously viewed while being taken and shot on the liquid crystal panel 12. can do.

Therefore, even when the video camera unit 34 is picking up an image, a still image can be taken without missing a shutter opportunity by the still camera unit 32. In the above embodiment, the liquid crystal panel 12 is the video camera body 10.
However, the present invention is not limited to this, and the present invention can be applied to a configuration in which the liquid crystal panel 12 is provided at another position.

Further, in the above embodiment, the image A captured by the video camera unit 34 is displayed on the screen of the liquid crystal panel 12, and the child screen corresponding to the angle of view of the still zoom lens 22 is displayed on the upper left of the image A. Although the display pattern in which B is displayed is given as an example, the display pattern is not limited to this.
The sub screen B may be displayed at another position (upper right, lower left, upper left, etc. of the screen).

[0089]

As described above, according to the first aspect of the present invention,
Since the zoom magnification of the viewfinder zoom lens can be adjusted to the zoom magnification operated by the still zoom operation means or the video zoom operation means, the image captured by the electronic viewfinder can be displayed on the liquid crystal panel. An image having the same angle of view as the image captured by the still zoom lens and the video zoom lens can be displayed on the liquid crystal panel. Moreover, parallax error can be eliminated, and the image displayed on the liquid crystal panel can be captured by the still camera unit.

According to the second aspect of the invention, all the images captured by the still zoom lens or the video zoom lens can be displayed, and the liquid crystal can be changed even if the zoom magnification of each zoom lens is arbitrarily changed. You can check it on the panel. Further, according to the third aspect of the present invention, it is possible to display an image of the angle of view of the zoom magnification on the telephoto side of the angle of view captured by the still zoom lens or the video zoom lens on the liquid crystal panel as a sub-screen. , When shooting with the still camera while shooting with the video camera, even if there is a difference in the zoom magnification of both zoom lenses, the angle of view of the still zoom lens and the video zoom lens can be checked at the same time. it can. Therefore, the shutter chance of the still camera unit is not missed even when the image is taken by the video camera unit.

Further, according to the invention of claim 4, since a character or a pattern can be inserted into the image signal output from the viewfinder signal processing circuit, the sub-screen can be displayed according to the difference in zoom magnification of both zoom lenses. Whichever of the displays is switched, the video image and the still image can be easily distinguished from each other. Therefore, for example, when shooting with the still camera while shooting with the video camera, you can operate the zoom magnification of one of the zoom lenses while both images are being displayed on the LCD panel at the same time. Even if the sides are switched, 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 is a diagram of a screen displayed on a liquid crystal panel when a zoom magnification is operated to a telephoto side.

FIG. 4 is a diagram of a screen displayed on a liquid crystal panel when a zoom magnification is operated to a wide angle side.

FIG. 5 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. 6 is a flowchart illustrating a process executed by a control circuit.

[Explanation of symbols]

 10 Video Camera Main Body 11 Video 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 section 21a Viewfinder zoom lens 22 Still zoom lens 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 71 Viewfinder signal processing circuit 72 Zoom drive unit 74 Viewfinder zoom lens control circuit 77 Select times 78 character insertion circuit 79 child screen processing circuit

Claims (4)

[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 operating means for changing 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 still camera having a zoom operation means for video to be changed, an electronic viewfinder section for converting an optical signal captured by a finder lens into an image signal, and a liquid crystal panel for displaying an image captured by the electronic viewfinder section. In a body video camera, a zoom lens provided as a viewfinder lens of the electronic viewfinder unit and having a focal length similar to those of the still zoom lens and the video zoom lens, and a zoom lens for the viewfinder. Convert optical signal to electrical signal, A viewfinder signal processing circuit for generating an image signal to be output to a liquid crystal panel, and a zoom magnification for adjusting a zoom magnification of the viewfinder zoom lens to a zoom magnification operated by the still zoom operation means or the video zoom operation means. A still camera-integrated video camera, comprising: an adjusting unit, and displaying an image corresponding to an angle of view captured by a zoom magnification of the still zoom lens or the video zoom lens on the liquid crystal panel. 2. The still camera-integrated video camera according to claim 1, wherein the zoom magnification adjusting means is an image in which the zoom magnification of the viewfinder zoom lens is captured by the still zoom lens or the video zoom lens. A video camera with a built-in still camera that matches the zoom magnification on the wide-angle side. 3. The still camera-integrated video camera according to claim 2, wherein the signal output from the viewfinder signal processing circuit is included in the still-angle zoom lens or the video-zoom lens at a telephoto side. A video camera integrated with a still camera, which is provided with an image processing circuit for processing into an image having an angle of view of the zoom magnification and displaying it on the liquid crystal panel as a sub-screen. 4. The still camera-integrated video camera according to claim 3, further comprising an insertion circuit for inserting a character or a pattern into the image signal output from the viewfinder signal processing circuit. Integrated video camera.