JPH06181533A - Compact video camera, optical system, lens for camcorder with electronic zooming, and compact camcorder system - Google Patents

Abstract

PURPOSE:To reduce the oscillation of the camera of a camcorder. CONSTITUTION:The axial direction A of tape winding shafts 22a, 22b in a VTR 20 is aligned to the optical axes of a lens 11 and an optical view finder 12 and the VTR 20, the lens 11 and the finder 12 are arranged in parallel on the same plane so as not to be mutually superposed. Consequently the centroid of the camcorder can be brought most close to a photographer, so that the oscillation of the camera can be reduced to its minimum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR-integrated video camera, and more particularly to a compact video camera having an arrangement configuration with little camera shake.

Further, the present invention relates to handling of a VTR integrated video camera.

The present invention also relates to an optical view finder of a VTR-integrated video camera, and more particularly to a video camera for digitally processing an image.

The present invention also relates to a VTR-integrated video camera, and more particularly to a constant shooting time. The present invention also relates to a small optical system suitable for use in video cameras, electronic still cameras, etc., In particular, the present invention relates to an optical system for a compact video camera, which uses a low-magnification zoom lens in a lens system, has a configuration that also uses electronic zoom, and combines a high-magnification optical zoom finder.

Further, the present invention relates to a zoom lens suitable for use in a video camera, and in particular, by using a zoom lens in a lens system and using it together with an electronic zoom, it is possible to achieve high magnification and downsizing. The present invention relates to a video camera lens with an electronic zoom that can be achieved.

Further, the present invention is to improve the usability of the camera-integrated VTR, in particular, the signal connection between the television receiver and the camera-integrated VTR, and the camera-integrated VTR.
The present invention relates to power supply to TR and simplification of battery charging.

The present invention also relates to a VTR-integrated video camera, and more particularly to prevention of charging when a primary battery is used as a battery.

[0008]

2. Description of the Related Art A conventional VTR-integrated video camera, as disclosed in Japanese Patent Application Laid-Open No. 1-98373, has a V-type video camera.
The longitudinal direction of the TR is aligned with the optical axis of the lens of the video camera, the VTR and the video camera are arranged in parallel, and the shape is close to a cubic (cubic), and the battery is externally attached to the rear part of the VTR.

In addition, a conventional VT using an optical finder
The R-integrated video camera has a taking lens mounted on the front surface of the VTR main body, as disclosed in Japanese Patent Laid-Open No. 1-142539.

Further, in the conventional VTR-integrated video camera, as disclosed in Japanese Patent Laid-Open No. 3-198480, a microphone is movably accommodated in the camera body, and the microphone is pulled out from the camera body at the time of shooting. It was used while protruding. In addition, the lens cover is opened in conjunction with the drawer of the microphone, and the lens cover is closed in conjunction with the storage of the microphone.

Further, Japanese Patent Publication No. 4-39267 discloses an electronic camera in which a storage chamber (video floppy drive device), an image pickup section and a battery are arranged in parallel so as not to overlap each other on the same plane.

Further, Japanese Patent Publication No. 4-39267 discloses that
An interchangeable lens type single lens reflex type optical system provided with a penta roof prism 90 and an optical viewfinder are disclosed.

Further, Japanese Patent Publication No. 4-39267 discloses that
A battery 93 housed inside the body is disclosed.

Further, Japanese Patent Laid-Open No. 3-206777 discloses a video floppy drive device, a lens unit,
An image recording device in which a finder and a battery are arranged in parallel so as not to overlap on the same plane is disclosed.

In addition, the optical view of the conventional video camera
As disclosed in JP-A-3-292067, a finder has a transmissive liquid crystal display element inserted between an objective lens and an eyepiece of an optical view finder, and the transmissive liquid crystal display element is The image input from the image pickup unit or the signal controller, the shooting data input from the character generator, etc. are displayed. Further, in this conventional example, the field frame indicating the photographing range is generated by the electronic view finder and is superimposed on the field of view of the optical view finder through the half mirror. The position and size of this field frame are determined by the controller based on the focal length of the taking lens obtained by the zoom encoder.

The conventional VTR-integrated camera adopts a toggle system in which photographing is started when the recording button is pressed and recording is ended when the recording button is pressed again. In addition, a push-on method was adopted in which recording is started when the recording button is pressed, and recording is ended when the recording button is released.

Further, in a conventional video camera lens, as described in, for example, Japanese Patent Laid-Open No. 2-39011, the focal length of the entire zoom lens is changed by moving the lens so that an image of the same subject can be obtained. I was changing the size. Further, in the conventional electronic zoom, for example, JP-A-1-26
As described in Japanese Patent No. 1086, the size of an image for the same subject is changed by electrical processing.

As a viewfinder of a video camera, an electronic viewfinder has been mainly used so far, which consumes a large amount of power and takes a short time to use a battery.

On the other hand, the optical zoom finder that works in conjunction with the zoom lens has the same zoom ratio as the zoom lens and has a low magnification.

In recent video cameras, importance is attached to operability and maneuverability, and in response to the demand, the image pickup device is also ⅓.
The inch size is becoming mainstream. Along with this, there is a strong demand for a compact, lightweight and high-performance zoom lens. Furthermore, there is a strong demand for cost reduction, and it is strongly desired to realize a zoom lens that reduces the number of lens components while maintaining high performance. A conventional zoom lens for a video camera has a zoom ratio of about 6 to 8, and each group forming the zoom lens has three focusing parts, three variator parts, one compensator part, and six relay lens parts. Most of them are composed of 8 sheets. In the case of a zoom lens for a video camera, the exit pupil position must be more than a certain distance from the image plane to prevent color shading, and a lens system with a long back focus because a crystal plate etc. is placed in front of the image plane. However, in order to realize a high-performance zoom lens, a large number of spherical lenses of 13 to 15 were indispensable.

On the other hand, a so-called compelling type zoom lens in which the compensator portion is removed is disclosed in Japanese Patent Laid-Open No. 2-39011.
As disclosed in Japanese Patent Laid-Open No. 3-33710 and Japanese Patent Laid-Open No. 3-33710, the number of lenses of 8 to 9 is also used in this type of zoom lens.

On the other hand, as a zoom lens having a zoom ratio of 2 to 3 times, a zoom lens having a two-group structure for a compact camera is generally used. This two-group zoom lens for a compact camera is composed of a front lens group having a positive refractive power and a rear lens group having a negative refractive power. This is because the compact camera uses 35 mm film, and a sufficient back focus can be secured even if the telephoto ratio is reduced. However, in the case of a zoom lens for a video camera, for example, in a 1/3 inch sensor, the diagonal length of the image pickup surface is 6 m.
Since there is only m, a telephoto type zoom lens of positive and negative cannot secure a sufficient back focus.

Further, the conventional video camera lens is a zoom lens composed of at least two sets of lenses which are spaced apart from each other, as described in, for example, Japanese Patent Application Laid-Open No. 2-39011. , The lens of each group is relatively moved along the optical axis direction to adjust the interval to perform the zoom operation, thereby changing the focal length of the entire zoom lens, thereby changing the image size for the same subject. I was changing the magnification.

Further, in the conventional electronic zoom, as described in, for example, Japanese Patent Application Laid-Open No. 1-261086, the size of an image of the same subject is electrically enlarged and the magnification is changed.

Further, conventionally, a miniaturized camera-integrated VTR in which a video camera and a video tape recorder (hereinafter referred to as VTR) are integrally formed due to advances in semiconductor technology, miniaturization of parts, advances in processing and mounting technology, and the like. -The weight reduction is progressing rapidly. Also, since all settings such as white balance, aperture, and focus have been automated, the video shooting itself is simple, and you only have to press the shooting start / stop button. As a result, anyone can easily shoot video. In this way, when it comes to video shooting,
Although it has been improved in terms of usability such as weight reduction and easy operation, there is still plenty of room for improvement in the playback of captured videos. For example, consider the case where a video is played back using the camera-integrated VTR as described in the instruction manual (pages 31 and 37) of Sony camera-integrated VTR model number CCD-TR105. And the external DC power output from the AC adapter is supplied to the camera-integrated VTR.
Next, a camera-integrated VTR and a television receiver (hereinafter referred to as TV) are connected by three RCA pin cords, and a video signal and a stereo audio signal reproduced from the camera-integrated VTR are external to the TV. Allow input to the input terminal. After switching the signal input mode of the TV to the external input mode, the reproduction of the camera-integrated VTR is started. In this way, very complicated work must be done. Furthermore, considering the situation in which the VTR with a built-in camera is often pushed into a chest or a chest when the video shooting or the video playback is finished, the complicated work associated with these playbacks must be performed every time. In addition, in such a situation, even if the user intends to shoot a video, the user must first charge the battery by pushing in the AC adapter or taking it out of a chest of drawers. As a result, at least one hour of preparation time is required before video recording.

In the conventional VTR-integrated video camera, a battery is externally attached to the rear part of the VTR-integrated video camera as disclosed in Japanese Patent Laid-Open No. 1-98373. This conventional battery mainly uses a nickel-cadmium battery as a secondary battery and an alkaline dry battery as a primary battery. The voltage of nickel-cadmium battery is 1.2V per unit cell, and the voltage of alkaline dry battery is 1.5V per unit cell.
It took 4 or 6 to use for the R-integrated video camera. If you want to charge the battery,
Remove from the integrated video camera and set the battery in the charger to charge. The battery with the built-in primary battery has no problem because it has a protrusion or the like on the side of the charger that contacts the battery and the battery cannot be set in the charger.

However, the performance of the battery is improved,
When using a lithium-ion battery as a secondary battery and a manganese dioxide lithium battery as a primary battery, the voltage per unit cell is 3V to 3.6V, so two batteries are required for use in a VTR integrated video camera with a power supply voltage of 6V. Will be enough. If there are two batteries, it can be built in the case, reducing weight,
Compact size is possible, and the external design of the VTR integrated video camera is also refreshing.

[0028]

[Patent Document 1] Japanese Patent Application Laid-Open No. 1-98373
The VTR-integrated video camera disclosed in the publication is vertically long with a lens and a VTR arranged in parallel. Furthermore, VT
A battery is arranged at the rear end of the R to increase the length in the front-rear direction. Therefore, since the shape is long in the front-rear direction and thick in the lateral direction, there is a problem that the storability is poor and the portability is poor. Further, the camera section 11 provided with an optical system having a high telephoto magnification has a long total length and tends to be arranged in parallel with the side surface of the VTR 1 as shown in FIG. There was a problem of decline. This conventional VTR
When shooting with an integrated video camera, if you hold the camera in front of your face, the center of gravity of the camera will move away from the photographer's face because the camera is long in the front-back direction. (Distance) increases, and even a slight shake of the photographer's hand shakes greatly at the camera edge,
There was a problem of promoting camera shake, so-called camera shake.

To solve this drawback, Japanese Patent Laid-Open No. 3-20
As disclosed in Japanese Patent No. 6777, a video floppy drive having its widest surface parallel to the photographer's face,
That is, if a video camera, a viewfinder, and a battery are arranged on the side of a shield and each of the component parts approaches the photographer, camera shake can be reduced. However, in this conventional example, since the mechanical parts and circuit parts of the video floppy drive and the image pickup device of the video camera are arranged on one board, the position of the center of gravity of the heavy video floppy drive is the face of the photographer. Therefore, the reduction of camera shake, so-called camera shake, was insufficient for the above-mentioned reasons.

Further, the image recording apparatus disclosed in Japanese Patent Laid-Open No. 3-206777 is such that a front part of a mechanical part and an electric circuit part, which perform each function from photographing to recording, is provided on one board B. Are fixed and implemented. The lens unit 18 is mounted on the front side of the board B, and the CCD 17 is mounted on the back side of the board B. Therefore, since the position of the lens unit 18 is uniquely determined by the board B, there is a morphological problem that the lens unit 18 protrudes or retracts too much depending on the length of the lens unit 18.

Further, Japanese Patent Publication No. 4-39267 discloses an electronic camera in which a video floppy drive has its widest surface parallel to the photographer's face, that is, like a shield, and a video camera or a battery is arranged on the side surface. It is disclosed. However, this conventional example is a single-lens reflex type, which is an interchangeable lens 1 system. Therefore, interchangeable lens 1
Is protruding from the camera body 63, and this conventional example also does not sufficiently solve the problems of the conventional example such as storability and portability. Further, in this conventional example, the center of gravity of the interchangeable lens 1 having a large weight is moved away from the photographer's face, so that the rotational moment (weight × distance) of the entire camera increases, which causes camera shake, so-called camera shake. was there.

Further, the interchangeable lens type single lens reflex type optical system provided with the penta roof prism 90 disclosed in Japanese Patent Publication No. 4-39267, and the optical finder use the semi-transmissive mirror 4 to reflect the light of the subject. It is divided into a solid-state image sensor 2 and an optical finder. Therefore, there is a problem in that the amount of light reaching the solid-state image pickup device 2 is low, and the amount of light split into the optical viewfinder is low, which hinders shooting in a dark place.

Further, an optical view of the VTR integrated video camera disclosed in Japanese Patent Laid-Open No. 1-142539.
Unlike the electronic viewfinder of the VTR-integrated video camera disclosed in Japanese Patent Laid-Open No. 1-98373, the viewfinder allows the user to see the view through the viewfinder even when the power is off.
There is a problem that it is difficult to distinguish the OFF state, and therefore, shooting is started without turning on the power.

Furthermore, the VTR-integrated video camera disclosed in Japanese Patent Laid-Open No. 3-198480 has a problem in that the number of components is increased due to the structure in which the microphone and the microphone cover are interlocked. Also, since the microphone pops out of the main body during use, there was a risk of being caught during operation.

Further, Japanese Patent Application Laid-Open No. 1-
In the VTR integrated video camera disclosed in Japanese Patent No. 142539, a lens is arranged in the longitudinal direction of the VTR section to increase the length in the front-rear direction, and a battery box is provided on the side surface of the VTR section to increase the lateral thickness. It was increasing. Similar to the above-mentioned conventional example, this conventional VTR integrated video camera also has a shape that is long in the front-rear direction and thick in the lateral direction, so that the rotational moment (weight × distance) of the entire camera increases, There was a problem of promoting camera shake, so-called camera shake. Further, there is a problem that the storage is poor and the portability is poor. Further, the (optical) finder 3 is long, and in order to use this finder 3, it is uniquely determined that the finder 3 is aligned with the longitudinal direction of the main body 1, and there is a problem that the degree of freedom in form is lowered.

Further, in the above-mentioned conventional example, the view frame is generated by the electronic view finder, and the optical view finder and the electronic view finder are used.
I needed two viewfinders for the viewfinder.

Further, Japanese Patent Laid-Open No. 3-292067 discloses that
The invention is a view finder for an optical zoom lens having a zoom encoder, and there is no disclosure about a case where an image is subjected to digital signal processing to be enlarged or reduced.

Generally, when a VTR-integrated camera is used for snap shooting, it is said that a shooting time of 5 seconds or more is required to understand the shooting contents. However, it is easy to take a short shot or a long shot as a precaution, just like a photographic camera. For this reason, when playing back a tape that has been shot, there is a problem that the shot content is too short to understand the shot content, or it is too long and too redundant.

In the case of a video camera zoom lens having a zoom ratio of 6 to 8, a compact and lightweight zoom lens in which the number of lenses is drastically reduced even if the lens shape, lens material, and lens arrangement are optimally designed. It was difficult to realize.

Further, examples of reducing the number of lenses by reducing the zoom ratio to about 2 are disclosed in JP-A-63-223720 and JP-A-1-32217, but the number of lenses is seven. It is ~ 8 lenses, which requires a large number of lenses. Moreover, the angle of view at the wide-angle end was as small as about 44 °, and a sufficient wide angle was not realized.

The present invention provides a compact and lightweight video camera with low power consumption by combining a high-magnification optical zoom finder, a low-magnification compact zoom lens and an electronic zoom. Zoom ratio is 2
With a zoom lens of about 3 and a small lens configuration,
The objective is to provide a compact and lightweight zoom lens for a high-performance video camera with a wide angle of view.

Among the above-mentioned conventional techniques, in the zoom lens,
Since the magnification can be varied by relatively moving at least two sets of lenses that are spaced apart from each other to adjust the spacing, the length of the spacing is required to correspond to the required magnification. Because of the space length required to secure the required magnification (for example, 6 times) in terms of product characteristics,
There is a problem that the size of the lens becomes large.

In addition, among the above-mentioned conventional techniques, the electronic zoom has a problem that the amount of information on the screen is reduced when the magnification is increased, and as a result, the image quality is deteriorated and the commercialability of the video camera is greatly impaired.

In addition, the reproduction using the camera-integrated VTR involves a lot of complicated work such as power supply and wiring to the TV, which is not convenient. This is also true for the preparation before shooting video.

Considering this cause, the present camera-integrated VTR is (1) there is no steady place for the camera-integrated VTR (2) Wiring with the TV is required every time (3) The power cannot be supplied from the outside unless the battery is removed from the camera-integrated VTR. (4) The battery cannot be charged unless the battery is removed from the camera-integrated VTR.

In addition, the battery built in the case is VT
If it can be charged without being removed from the R-integrated video camera, the handling of the VTR-integrated video camera is improved. However, it is not possible to distinguish between a rechargeable secondary battery and a non-rechargeable primary battery, and the primary battery may be charged.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a compact video camera in which camera shake is reduced by arranging parts.

A second object of the present invention is to provide a compact video camera which equivalently displays the photographing range of the zoom lens by changing the size of the field frame.

A third object of the present invention is to provide a compact video camera having a fixed-time shooting function in which the shooting time is fixed and the redundancy of reproduced images and the necessity of editing are reduced.

A fourth object of the present invention is to solve the above-mentioned problems of the prior art and to shorten the distance between the lenses in the zoom lens necessary to secure the necessary magnification, and therefore to reduce the size. It is possible to provide a lens for a video camera with an electronic zoom that can be used, and in which the image quality is not deteriorated by the electronic zoom used for that purpose, and the electronic zoom can be used in a magnification range which is not so large.

A fifth object of the present invention is to improve the usability, and to provide a compact video camera which is truly convenient not only for video recording itself but also for reproduction and advance preparation before shooting. .

A sixth object of the present invention is to provide a compact video camera which enables a mixed use of a primary battery (dry battery) and a secondary battery (storage battery) and cannot be charged when the primary battery is used.

[0053]

In order to solve the above-mentioned problems, a video camera and an optical viewfinder are arranged vertically on the same plane, and the widest surface of a VTR is arranged on substantially the same plane. Then, the batteries are arranged on the same plane, and the above constituent elements are arranged independently.

Further, the axial direction of the tape winding shaft of the VTR mechanism and the optical axis directions of the lens and the optical view finder are substantially aligned, and the VTR and the lens or view finder are arranged in parallel. Further, the VTR drive mechanism, which is heavier than the lightweight VTR circuit, is placed close to the photographer's face, and the center of gravity of the VTR is brought close to the photographer.

Further, a shielding plate for covering both the optical viewfinder and the optical system at the same time is provided. Moreover, the power supply is turned on and off in conjunction with the operation of the shielding plate.

Further, a shield plate for simultaneously covering the optical view finder, the optical system and the microphone is provided, and the operation of the shield plate is interlocked with power ON and OFF.

The optical viewfinder is a real image type optical viewfinder having an erecting prism.

Further, a transmissive liquid crystal display element is inserted at the focal position of the objective lens, and a field frame is displayed in contact with this liquid crystal display element.

Further, the size of the field frame displayed on the liquid crystal display element is electrically changed according to the signal of the enlargement ratio or the reduction ratio at the time of digital signal processing of the image.

In addition, VTR system control
Program software was built into the microcomputer to start recording when the recording switch is pressed and to automatically stop recording after a predetermined time.

A primary battery (dry battery) was used as a power source.

In order to achieve the above object, the zoom lens has a low magnification and the electronic zoom has a low magnification, and both magnifications are combined so as to satisfy the commercial characteristics of the video camera, and a high magnification is obtained. This is achieved by linking the optical zoom viewfinder of (1) with the magnification of the video camera.

In order to solve the above problems, the present invention arranges a first lens unit having a negative refracting power and a second lens unit having a positive refracting power in order from the object side, and at the time of zooming from a wide angle to a telephoto position. The second lens group is moved to the object side, and the first lens group is moved to prevent movement of the image plane position during zooming. Furthermore, by providing at least one aspherical surface on each of the first lens group and the second lens group, a compact and lightweight zoom lens for a video camera can be realized, and a compact video camera equipped with this zoom lens can significantly Low power consumption, small size
Weight reduction can be achieved.

In order to achieve the above object, in the lens for a video camera with an electronic zoom according to the present invention, a part of a desired object magnification is provided in the zoom lens system, and the remaining part is provided in the electronic zoom system. By doing so, we have decided to achieve the desired subject magnification in both zoom systems.

As a result, the magnification of the zoom lens can be set lower than when only the zoom lens is used, and the magnification of the electronic zoom can be set lower than when only the electronic zoom is used. Thus, it is possible to realize a subject magnification sufficient to satisfy the commercial characteristics of the video camera.

In order to achieve the above object, as a first method, camera signal processing means, VTR signal processing means, means for outputting a signal as an optical signal, power supply from a battery and an external DC power source. A camera-integrated VTR having switch means for switching power supply from
The camera-integrated VTR interface device includes means for receiving the optical signal, means for converting the received optical signal into an original signal, and means for supplying DC power to the outside. .

As a second method, the camera signal processing means, the VTR signal processing means, the means for outputting a signal as an optical signal, and the first power source for switching the power supply from the battery and the power supply from the external DC power source. Camera-integrated VTR equipped with the switch means, and the second switch means for switching between the battery charging operation and the power supply operation, means for receiving the optical signal, and conversion of the received optical signal into the original signal. And a first means for supplying DC power to the outside, and a second means for supplying DC power to the outside for charging the battery, and a camera-integrated VTR interface device. is doing.

As a third method, the first and second methods described above are used.
In this method, the output terminal of the optical signal output means and the power supply terminal from the outside are arranged on the bottom surface of the camera-integrated VTR.

As a fourth method, in connecting the terminal and the camera-equipped VTR interface device side terminal in the third method, the tripod hole at the bottom of the camera-integrated VTR is also used as a connection guide. .

In addition, there is a difference in energy density between the primary battery and the secondary battery, and when trying to obtain the same energy amount,
There is a difference in the shape of the battery. That is, the geometry of the primary battery is smaller than the geometry of the secondary battery. Therefore, first, the terminal leads on the battery case side are separately provided for the primary battery and the secondary battery. In addition, a primary battery was housed to make a storage adapter having the same external dimensions as the secondary battery, and the storage adapter was provided with a recess for identifying the primary battery.

[0071]

[Function] Since the tape winding axis of the VTR mechanism and the optical axis of the optical system and the optical viewfinder are made to coincide with each other, it is inevitable that the widest area of the VTR section is held parallel to the photographer's face. Therefore, the center of gravity of the VTR is closest to the photographer. In addition, the VTR mechanism, which is heavier than the lightweight VTR circuit, is placed on the photographer's side.
The center of gravity of the entire TR integrated video camera should be closest to the photographer. In general, camera shake increases in proportion to the moment, so reducing the moment is effective as a measure against camera shake. The moment M is expressed by the following formula.

M = L × F where L: distance F: force or weight In the case of a VTR-integrated video camera, L is the average distance from the photographer at the position of the center of gravity of each part, and F is a VTR-integrated video This is the total weight of each part of the camera. If F are equal, then L
M can be made smaller by making The closest position of the center of gravity of each part of the VTR-integrated video camera to the photographer is to minimize L, which makes it possible to capture a stable image with little camera shake. Therefore, arranging the widest surface of the VTR unit on the same plane so as to be in contact with each other, or arranging the video camera, the optical finder, and the battery independently on the same plane is a method of minimizing L. As a result, it is possible to capture a stable image with little camera shake.

Further, the shield plate that opens or shields the optical view finder and works in conjunction with the power switch is
When you look into the optical view finder and you can't see anything, the power is off. When you can see it, you are on.

Since the microphone is covered with the shield plate, the movable part is only the shield plate, and the number of parts is reduced. Also, since the microphone does not stick out of the body, there is no risk of getting caught during shooting.

A lens having a low telephoto magnification (for example, 1 × or 3 × or less) has a short barrel length. Therefore, set the lens to V
It becomes possible to dispose on the side surface of the TR, and the center of gravity of the lens is brought closer to the photographer, so that camera shake is less likely to occur.

The image pickup device of the video camera and the VTR
Since the boards of the parts are arranged independently of each other, the optical system of the video camera does not pop out or retract.

As the optical viewfinder, there are 1) a method of directly determining the visual field by the taking lens and 2) a method of indirectly determining the visual field by using an auxiliary lens or a frame. The method of 1) is a) direct finder,
b) There is a single-lens reflex viewfinder, and it is Japanese Patent Publication No. 4-392.
The optical finder disclosed in Japanese Patent Publication No. 67 corresponds to a single-lens reflex finder. The method of 2) includes a) twin-lens reflex finder, b) frame finder, c) Newton finder, d) Galileo finder, e) arbata finder, f) bright frame finder, g) real image finder, h) There is a zoom finder. Detail is,
Kubota et al. 2, Optical Technology Handbook, Asakura Shoten, 197
0.3, p863-866. In the present invention, the real image type finder is selected. The reason for this is that the image quality is good because it does not cause a decrease in light amount as in a single-lens reflex finder and does not use a semi-transmissive mirror as in an Arbata finder.

Further, the erecting prism provided in the optical viewfinder has a function of shortening the distance between the eyepiece and the objective lens of the real image type optical viewfinder, and brings the center of gravity of the optical viewfinder closer to the photographer to reduce camera shake. There is an action.

Since the field frame is displayed directly on the liquid crystal display element, an electronic view finder, a half mirror, etc. are unnecessary.

Further, since the visual field frame is electrically changed according to the signal, it is possible to zoom the video camera using the pan focus lens having no zoom encoder.

Recording is started by pressing the recording switch incorporated in the system control microcomputer.
Since the program software that automatically stops recording after a predetermined time sets the shooting time of the VTR integrated camera to a predetermined length, it eliminates the problem that the shooting contents are too short to understand or the length is too long and redundant. , It is as if the edited video can be provided from the beginning of shooting.

Since the primary battery (dry battery) as a power source does not need to be charged, it is not necessary to carry a charger when carrying a video camera, which has the effect of improving portability.

Further, in the present invention, the magnification of the zoom lens can be reduced to reduce the size of the zoom lens, and the electronic zoom magnification can be set low to reduce the amount of information on the screen. The minimum is to prevent deterioration of image quality.

Furthermore, by adopting an optical viewfinder of high magnification corresponding to the zoom ratio of the zoom lens and the zoom ratio of the electronic zoom, it is possible to realize the reduction of power consumption. In addition, in order to secure a sufficient back focus, as described in the above-mentioned conventional technique for the configuration of the zoom lens,
A wide-angle type two-group zoom lens in which the first lens group is negative and the second lens group is positive is used.

The use of a concave lens and a convex lens for each of the first lens group and the second lens group is a necessary condition for correcting the chromatic aberration of the zoom lens.

Therefore, regarding the lens configuration of the first lens group, in the case of a wide-angle zoom lens having an angle of view at the wide-angle end of about 60 degrees, a meniscus concave lens having a convex surface facing the object side is provided to correct distortion. Therefore, the minimum lens configuration of the first lens group is a two-lens configuration including a meniscus concave lens having a convex surface facing the object side and a convex lens from the object side.

Further, regarding the lens configuration of the second lens group, in order to correct chromatic aberration and dispose an aspherical surface, a meniscus concave lens having a convex surface facing the object side and a convex lens having a large axial thickness on both convex surfaces are arranged in order from the object side. It is necessary to have a two-sheet structure.

Next, it is effective to use two aspherical surfaces for aberration correction. To maximize the effect of these two aspherical surfaces, the two aspherical surfaces should be arranged apart from each other. Is good.

According to the present invention, by reducing the magnification of the zoom lens, the distance between the lenses in the zoom lens can be shortened, and the zoom lens can be downsized accordingly. In addition, the electronic zoom used to reduce the magnification of the zoom lens is used. However, it is sufficient to set the magnification of this electronic zoom low, so that the reduction of the amount of information on the screen is minimized and the image quality is degraded. Can be less likely to occur.

Further, since the camera-integrated VTR interface device is provided, the stationary location of the camera-integrated VTR is set.

Furthermore, the wiring to the TV is a camera integrated type V
It only has to be performed once between the TR interface device and the TV, and thereafter, wiring is not required due to the optical signal connection.

Further, power can be supplied from the outside without removing the battery from the camera-integrated VTR.

Further, it becomes possible to charge the battery without removing the battery from the camera-integrated VTR.

The positive electrode lead terminal for the primary battery is V
It is connected to the load of the TR integrated video camera, but not to the output terminal of the charger. Therefore,
The primary battery is not charged.

The primary battery detection switch fits into the recess of the storage adapter to disconnect the charging circuit for the primary battery. Therefore, the primary battery is not charged.

[0096]

FIG. 1, FIG. 2, FIG. 3 and FIG. 4 show the first embodiment of the present invention.
An example of is shown. 1 is an external view of the internal component with the case 2 removed, as seen from the front, FIG. 2 is an external view of the internal component with the case 2 removed, and FIG. 3 is the external view of the VTR-integrated video camera 1. 4 and 5 are external views as seen from the rear. 1 and 2, a compact video camera 1 according to the present invention includes a VTR mechanism 20, a VTR circuit 21 and a microphone 13 arranged in front of the VTR mechanism 20, and an optical device arranged on the side of the VTR mechanism 20 and VTR circuit 21. Viewfinder 12 and optical view
Video camera lens 1 placed under the viewfinder 12
1, a battery 23 arranged below the video camera lens 11, and a video camera circuit 24. An image pickup device 25 is attached to the rear part of the video camera lens 11. The VTR mechanism 20 includes a tape winding shaft 2
2a, 22b, cylinder 28 and cassette holder 20a
Is placed. The axial direction of the tape winding shafts 22a and 22b of the VTR mechanism 20 is the arrow A direction. The direction of arrow A is parallel to the optical axis of the video camera lens 11 and the optical axis of the optical viewfinder 12. Also, V
TR mechanism 20 and optical view finder 12
The video camera lens 11 and the battery 23 do not overlap each other and are arranged in parallel on the same plane. A tape cassette (not shown) is attached to the cassette holder 20a, the tape cassette is fitted into the tape winding shafts 22a and 22b, and the tape (not shown) is wound around the cylinder 28.

As the battery 23, a primary battery (dry battery) is used. Nowadays, dry batteries are easily available anywhere, and there is no need to charge them like secondary batteries (storage batteries).

In FIGS. 3 and 4, the compact video camera 1 of the present invention is enclosed in a case 2. An opening 8 is provided on the front surface of the case 2, and a video camera lens 11, an optical view finder 12, a microphone 13 and a tally lamp 9 are arranged. The opening 8 is opened and closed by the shield plate 10. The shield plate release knob 3 is diagonally below the opening 8.
6 are arranged. When the shield plate release knob 36 is pulled, the shield plate 10 moves upward and covers the opening 8. A recording switch 4, an eject switch 5, a mode changeover switch 6 and a top cover 3 are arranged on the upper surface of the case 2. A zoom switch 7 is arranged on the side surface of the case 2. The recording switch 4 sets the start or end of recording. The eject switch 5 is a slide switch type, and when the eject switch 5 is pulled, the top cover 3 and a cassette lid 15 described later are opened, and a tape cassette (not shown) is taken in and out. The mode selector switch 6 switches the shooting mode. Details of the mode switch 6 will be described later. A battery lid 14 is arranged on the lower surface of the case 2, and the battery lid 14 is opened to take the battery 23 in and out. A cassette lid 15 and a viewfinder eyepiece portion 18 are arranged on the back surface of the case 2, and an eyecup 19 is formed around the viewfinder eyepiece portion 18. A power supply indicator light 26 and a recording indicator light 27 are arranged inside the eyecup 19. The cassette lid 15 has a liquid crystal display unit 16 for displaying the operating state of the compact video camera 1. A raised finger stopper 17 is provided on the right side of the cassette lid 15 and prevents the thumb of the right hand from slipping when the compact video camera 1 is gripped by the right hand. Top cover 3 placed on the top and cassette lid 1 placed on the back
A tape cassette (not shown) to be inserted into the VTR mechanism 20 from 5 is taken in and out. The eye cup 19 functions to prevent harmful external light from entering when looking into the viewfinder eyepiece portion 18. The power indicator 26 lights up when the mode changeover switch 6 is set to the CAMERA mode or the VTR mode. The color is preferably red. The recording indicator 27 has a mode switch 6 of CAME.
Lights when the RA mode is set and the recording switch 4 is turned on to start recording. The color of the recording indicator light 27 is preferably green or blue. The recording indicator light 27 blinks in the later-described J shooting mode (just shooting mode) to display the elapsed time. It is desirable that the blinking period be one second.

FIG. 5 and FIG. 6 show the second embodiment of the present invention and show the construction and operation of the shield plate 10 which covers the opening 8 of the case 2. A shield plate slide knob 30 is fixed to the upper end of the shield plate 10. The opening / closing mechanism of the shield plate 10 includes a torsion coil spring 33 locked to the shield plate 10 and the shield plate 29.
Consists of. One end 33a of the torsion coil spring 33 is rotatably pivoted on the screw 34 at the upper end of the shield plate 10, and the other end 33b of the torsion coil spring 33 is rotatably pivoted on the protrusion 35 of the case 2 The coil portion 33a of the spring 33 is not fixed and is free. The shield plate 10 is held by the case 2 so as to be slidable in the vertical direction, and the torsion coil spring 33 always applies an upward force to the shield plate 10. The shield plate 10 has a notch 37 at the side end.
And the engaging claw 3 that moves integrally with the shield plate release knob 36
8 is engaged. The engaging claw 38 is a release knob biasing spring 39.
Therefore, the shield plate 10 is always urged toward the shield plate 10. A power switch 31 is arranged in the case 2 below the shield plate 10. The power switch knob 32 is the lower end 10a of the shutter plate.
Has been contacted with, pushed down, and the power is on. When the shield plate release knob 36 is slid by the force of the release knob biasing spring 39, the engaging claw 38 is disengaged from the notch 37 of the shield plate 10, and the shield plate 10 is moved upward by the force of the torsion coil spring 33. It moves and blocks the opening 8. Since the lower end portion 10a of the shielding plate has moved upward, the power switch knob 3
The force pushing down 2 disappears, and the power is turned off.

FIG. 7 is a third embodiment of the present invention and shows a power assist mechanism for moving the shield plate 10 by a motor. The rack gear 10b is formed on the side end of the shielding plate 10 to prevent the motor 40 from
It is driven by the pinion gear 41 fixed to the. Position switches 45 and 46 are provided at a first position where the shielding plate 10 covers the opening 8 and a second position where the opening 8 is fully opened, respectively. The position switches 45 and 46 are pressed by the claws 10c provided on the shield plate 10 to turn on the switches. Information on the camera power switch 44 and the position switches 45 and 46 is input to the microcomputer 42. The drive command (rotation direction and rotation time) of the microcomputer 42 to the motor 40 is transmitted to the motor driver 43 to operate the motor 40. Camera power switch 44
When the switch is turned on, the motor 40 rotates to lower the shield plate 10 and turn on the position switch 46. The microcomputer 42 confirms the information of the position switch 46,
0 Stop command is issued. The microcomputer 42 turns on the power supplies of all circuits in parallel. This completes the preparation for shooting. When the camera power switch 44 is turned off, the microcomputer 42 issues a command to the motor driver 43 to rotate the motor 40 until the information of the upper position switch 45 comes. The motor driver 43 rotates the motor 40 to move the shield plate 10 upward. The microcomputer 42 confirms the information of the position switch 45 and stops the motor 40. In parallel, the microcomputer 42 turns off the power of all circuits. An external view of the compact video camera 1 that opens and closes the shielding plate 10 by power assist is shown in FIGS. 8, 9, 10, and 11. 10 and 11
FIG. 3 is a view of the compact video camera 1 viewed from above.
2 is a case, 3 is a top cover, 5 is an eject switch, 6 is a mode switch, 7 is a zoom switch, 8 is an opening, 10 is a shielding plate, 11 is a lens, 12 is an optical viewfinder, 13 is a microphone, 19 is Eye cup, 4
7 is a mode index. The mode changeover switch 6 has a camera mode, a power OFF and a video mode. By matching each mode with the mode index 47,
The mode state is established. That is, when the CAMERA mode is set, the camera power switch 44 is turned on. V
The video power is turned ON when the IDEO mode is set. When turned off, all power is turned off. The CAMERA mode further has three shooting modes of N, J, and T.
The three shooting modes of N, J, and T will be described later.
The camera power switch 44 is turned on regardless of which position of N, J and T is set to the mode index 47. 8 and 11 show a state in which the mode changeover switch 6 is in the CAMERA mode, the camera power switch 44 is turned on, the shield plate 10 is lowered, the opening 8 is opened, and the camera is in a shooting preparation state. 9 and 10, when the display OFF of the mode changeover switch 6 comes to the position of the mode index 47, the camera power switch 44 is turned OFF, the shield plate 10 is raised, the opening 8 is closed, and the photographing is completed. Or the state in which the VIDEO mode has ended.

FIG. 11 shows the fourth embodiment of the present invention and shows a state in which the mode changeover switch is set so that J in the CAMERA mode is aligned with the index 47.

As shown in FIG.
The CAMERA mode can be set to three shooting modes: normal (N), just (J), and toggle (T). In the normal mode (N), recording is performed only while the recording switch 4 is pressed, and recording is terminated when the recording switch 4 is released. In the just mode (J), when the recording switch 4 is pressed, recording is performed for a fixed time (for example, 5 seconds), and the recording is automatically ended. The toggle mode (T) uses the recording switch 4
Pressing starts recording, continues recording even if the recording switch 4 is released, and ends recording when the recording switch 4 is pressed again.

FIG. 12 shows a flowchart in the just mode (J). When the mode switch 6 is set to the just mode (J), the camera power switch 4
4 turns on. Recording starts when the recording switch 4 is pressed. The elapsed time is measured and the measurement result is displayed in a countdown (described later). When the predetermined time has passed, the recording is stopped.

FIG. 13 shows the structure of the optical viewfinder 12 according to the fifth embodiment of the present invention. The optical viewfinder 12 is a real image type optical viewfinder including an objective lens 48, a pair of erecting prisms 52 and 53, and an eyepiece lens 54. The objective lens 48 includes three lens groups, a first group 49 having a three-element configuration, a second group 50 having a one-element configuration, and a third group 51 having a two-element configuration. First
The group 49 and the second group 50 are movable in the optical axis direction,
Change the telephoto magnification. A set of erecting prisms 52, 53
Reflects the incident light four times and flips it vertically and horizontally,
The inverted real image formed by the objective lens 48 is made erect. Since a pair of erecting prisms 52 and 53 was used, 4
The length in the optical axis direction can be shortened by the amount of light reflected once.

FIG. 14 shows the structure of the optical viewfinder 12 according to the sixth embodiment of the present invention. The optical viewfinder 12 is a real image finder. The optical system is
Objective lens 48, a pair of erecting prisms 52, 53,
It includes a transmissive liquid crystal display element 55 and an eyepiece lens 54. The objective lens 48 includes three lens groups, a first group 49 having a three-element configuration, a second group 50 having a one-element configuration, and a third group 51 having a two-element configuration. The first group 49 and the second group 50 are movable in the optical axis direction, and the telephoto magnification is variable.
The erecting prisms 52 and 53 inserted between the objective lens 48 and the eyepiece lens 54 erect the inverted image generated by the objective lens 48 four times vertically and horizontally. The transmissive liquid crystal display element 55 is at the focal position of the objective lens 48, and the display contents of the transmissive liquid crystal display element 55 and the objective lens 4 are
The images of 8 are simultaneously viewed with the eyepiece lens 54. The transmissive liquid crystal display element 55 uses the optical shutter function to generate the field frame 56 and the countdown display 57. That is, the field frame 5
6 is a black color that does not allow light to pass therethrough, and allows the light to pass through except for the field frame 56.
Also, the countdown display 57 is divided into 5 blocks. At the start of recording, all 5 blocks are black that does not allow light to pass, and the blocks that do not pass light disappear as time passes, and all the blocks disappear when the recording time ends. Disappear.
On the contrary, one black block may appear at the start of recording, and all five blocks may appear over time to indicate that the recording has ended.

FIG. 15 shows the structure of the optical viewfinder 12 according to the seventh embodiment of the present invention. The optical viewfinder 12 is a real image finder. The optical system is
Objective lens 48, a pair of erecting prisms 52, 53,
It includes a transmissive liquid crystal display element 55 and an eyepiece lens 54. The objective lens 48 and the eyepiece lens 54 are convex lenses. The erecting prisms 52 and 53 inserted between the objective lens 48 and the eyepiece lens 54 erect the inverted image generated by the objective lens 48 four times vertically and horizontally. The transmissive liquid crystal display element 55 is located at the focal position of the objective lens 48, and the display contents of the transmissive liquid crystal display element 55 and the image formation of the objective lens 48 are simultaneously observed by the eyepiece lens 54. The transmissive liquid crystal display element 55 uses the optical shutter function to make the field frame 5
6 and a countdown display 57 are generated. That is, the visual field frame 56 is black that does not transmit light, and the other than the visual field frame 56 transmits light. Also, the countdown display 57 is divided into 5 blocks. At the start of recording, all 5 blocks are black that does not allow light to pass, and the blocks that do not pass light disappear as time passes, and all the blocks disappear when the recording time ends. Disappear. On the contrary, one black block may appear at the start of recording, and all five blocks may appear over time to indicate that the recording has ended. In this embodiment, the objective lens 48 is not a telephoto lens. Video camera lens 11
The change in the telephoto magnification is displayed by changing the size of the field frame 56. That is, when the telephoto magnification is 1 ×, as shown in FIG. 19, the size of the visual field frame 56 is located around the visual field,
As shown in FIG. 20, the size of the visual field frame 56 decreases as the telephoto magnification increases, and the visual field frame 56 is located in the center of the visual field and displays the range reflected in the image sensor 25.
The optical viewfinder 12 is a video camera lens 11
It is arranged in parallel with. Therefore, parallax (parallax), that is, a shift between the display range of the video camera lens 11 and the shooting range of the optical viewfinder 12 occurs. In order to solve this problem, the field frame 56 is moved within the transmissive liquid crystal display element 55 for correction.

FIG. 16 shows the structure of the optical viewfinder 12 according to the eighth embodiment of the present invention. The optical viewfinder 12 of this embodiment includes an objective lens 58 and a reflective liquid crystal display element 62. The objective lens 58 is a concave lens having a semi-transmissive mirror 59 with a metal film deposited on the back surface. The reflective liquid crystal display element 62 has a reflecting mirror 65, and a window 63 is opened in the center of the reflecting mirror 65. The field frame 64 is formed by utilizing the optical shutter function of the reflective liquid crystal display element 62. That is, only the field frame 64 allows light to pass through and the field frame 6
The inside and outside of 4 are the parts that do not transmit light. When viewed through the window 63, the display content of the reflective liquid crystal display element 62 appears to be reflected by the objective lens 58 and the semitransparent mirror 59. That is, since the portion of the field frame 64 allows light to pass therethrough, the light incident from the objective lens 58 is reflected by the reflecting mirror 65 and forms the field frame image 60 on the semi-transmissive mirror 59. However, since it does not transmit light except the field frame 64, it looks black and nothing is reflected on the semi-transmissive mirror 59. Further, since the photographer's eyes come into the window 63, the photographed image has a black color or a color close to that at the time of photographing, so that it is hardly reflected on the semi-transparent mirror 59. Therefore, only the field frame image 60 appears on the semi-transmissive mirror 59, and is superimposed on the subject viewed through the objective lens 58. The semi-transmissive mirror 59 is a concave mirror and has a field frame 64.
Is located within the focal length of the concave mirror, the field frame image 60 reflected by the semitransparent mirror 59, which is a concave mirror, is a virtual image. Since the visual field frame image 60, which is a virtual image, is viewed at the same position as the subject formed in the distance, the visual field frame image 60 can be clearly seen and the accurate photographing range can be known. (Source: Kubota et al. 2, Optical Technology Handbook, Asakura Shoten, 1970.3,
(p863-866) Since the size of the field frame 64 can be freely changed, the size of the field frame image 60 can be freely set.
The countdown display 66 displayed at the bottom of the field frame 64 is also displayed on the semi-transparent mirror 59 in the countdown display image 61.
Reflected as. In this embodiment, the objective lens 48 is not a telephoto lens. The size of the visual field frame 64 of the present embodiment also changes according to the telephoto magnification of the video camera lens 11 as in the visual field frame 56 shown in the fifth embodiment of FIG. That is, when the telephoto magnification of the video camera lens 11 is 1,
As shown in FIG. 19, the size of the field frame 56 is large, the field frame 56 is located around the field of view, and as the telephoto magnification increases, as shown in FIG.
As shown in, the size of the field frame 56 is reduced and the field frame 56 is located at the center of the field. In this way, the field frame 56 displays the range reflected in the image sensor 25. The optical viewfinder 12 is arranged parallel to the video camera lens 11. Therefore, parallax (parallax), that is, a shift between the display range of the video camera lens 11 and the shooting range of the optical viewfinder 12 occurs. In order to solve this problem, the field frame 56 is moved within the transmissive liquid crystal display element 55 for correction.

FIG. 17 is a signal processing block diagram of the compact video camera 1 of the present invention. This block diagram includes a camera section, a VTR section, and a finder section. The camera section includes a video camera lens 11, an image pickup device 25, and an A / D.
67, DSP68, D / A69, TG71, zoom LS
I72 and microcomputer 73. VTR section is VTR7
It consists of zero. The finder section includes a frame generation circuit 74, a liquid crystal (LCD) drive circuit 75, and a liquid crystal display element (LCD).
It consists of 78. The image formed on the image sensor 25 through the video camera lens 11 becomes an analog video signal, is output from the image sensor 25, is converted into a digital signal by the A / D 67, and is converted into a DSP (Digital Signal).
(Processor: Digital signal processing LSI) 68 and after performing interpolation processing by the zoom LSI 72, it is converted into an analog signal by the D / A 69, output as a television signal, and recorded by the VTR 70. The microcomputer 73 calculates zoom information data such as the zoom magnification and the zoom target area. According to the zoom information data of the microcomputer 73, the zoom LSI 72 calculates the timing of intermittent reading of the image sensor 25 and inputs the image sensor thinning control signal to the TG 71. The TG 71 is a timing generator, which generates a sensor drive pulse according to the image sensor thinning-out control signal from the zoom LSI 72 to drive the image sensor. The zoom information data such as the zoom magnification and the zoom target area calculated by the microcomputer 73 is
It is input to the frame generation circuit 74. The frame generation circuit 77 generates the visual field frames 56 and 64 according to the input zoom information, determines the size and display position of the visual field frames 56 and 64, and inputs them to the liquid crystal drive circuit 75. The liquid crystal display element 76 is driven according to the visual field frame information input to the liquid crystal drive circuit 75. The liquid crystal display element 76 displays the field frames 56, 64 or the countdown displays 57, 66 according to the drive signal input from the liquid crystal drive circuit 75.

FIG. 18 schematically shows the state of signal processing of the video signal in each block, taking the case of 2 × zoom in the central portion of the light receiving surface of the image sensor 25 as an example. The video signal 77 is a signal on the light receiving surface of the image sensor. The TG 71 performs high-speed vertical reading of the image sensor 25 up to the zoom target area start point (that is, ¼ from the upper end) within the vertical blanking period. The read signal is not subject to signal processing.
After the end of the image period, that is, after the end point of the zoom target area (that is, 1/4 from the lower end), the vertical C of the image sensor is obtained.
The video signal electrification remaining in the CD is swept away at high speed. Therefore, only half the video signal in the center is the signal during the video period and is the target of signal processing. Next, the video signal 78 is
The output signal in DSP68 is shown. During the video period, intermittent reading is performed every 1H (H: horizontal operation period) in the vertical direction. The readout pulse in the horizontal direction is as usual. Therefore, the image pickup device 25 can obtain a toothless video signal which is doubled only in the vertical direction. And video signal 7
Reference numeral 9 indicates output signals from the zoom LSI 72. The missing tooth signal read from the image pickup device 25 is the zoom LSI 7
The signal is input to 2 and signal complementation is performed, and horizontal expansion and horizontal / vertical complementation are performed. In this way, the image at the center of the image sensor 25 is doubled horizontally and vertically.

FIG. 19 shows how the optical viewfinder 12 looks. Liquid crystal display element 5 on subject 80
The visual field frames 56 and 64 generated at 5 and 62 appear to be superimposed. Countdown display 5 at the bottom of the field frames 56, 64
7 and 66, when the just mode is set by the mode changeover switch 6, the countdown of the set time is displayed. The countdown displays 57 and 66 are divided into five blocks and are filled with black.
As time passes, it becomes transparent one block at a time.
FIG. 18 shows that 1 second has elapsed with a set time of 5 seconds. It also indicates that 0.2 has elapsed, with the set time being 1.

FIG. 20 is also a view when looking through the optical viewfinder 12, and shows the positions of the visual field frames 56 and 64 when the central portion of the subject is doubled. Further, the countdown display 57 indicates that 4 seconds have elapsed. Also,
It shows that 0.8 has elapsed with the set time being 1.

FIG. 21 is a block diagram showing the ninth embodiment of the present invention.

The optical system for the compact video camera of this embodiment will be described below. 101 is an optical zoom finder. 102 is a zoom lens. An image sensor 103 converts an image of a subject (not shown) formed by the zoom lens 102 into an electric signal. Reference numeral 104 denotes the image sensor 10
Reference numeral 3 denotes a camera circuit for processing an electric signal from the digital camera 3, 105 is an electronic zoom circuit for changing the enlargement ratio or the reduction ratio on the image sensor 103 according to the electric signal from the camera circuit 104, and 106 is a control circuit A. Reference numeral 107 is a zoom motor that rotates or stops according to a signal from the control circuit A 106, and 108 is a zoom position detector that detects the zoom position of the zoom lens. 112 is the zoom lens 10
2 and a cam ring for setting the lens at a desired position for zooming of the optical zoom finder 101.
It has a cam A, a cam B of 111, a cam C of 113, and a cam D of 114. The cam A110 and the cam B111 are
The cams C113 and D114 are cams for setting a lens position for zooming the zoom lens 102.
This is a cam for setting a lens position for changing the magnification of the optical zoom finder 101. Reference numeral 115 is a focus lens for focusing, and 116 is a focus mechanism for guiding and positioning the focus lens 115.
Reference numeral 17 is an actuator for moving the focus lens 115. In this embodiment, two electromagnets are used for the actuator 117. Reference numeral 120 is a variator lens that zooms the zoom lens 102 together with the focus lens 115.

The operation of the above arrangement will be described below. In the zoom lens 102, the cam A110 and the cam B111 of the cam ring 112 are rotated by the rotation of the zoom motor 107, and the focus lens 115 and the variator lens 120 are moved to perform the zooming action of the zoom lens 102. Since the cam ring 112 is also provided with a cam C113 and a cam D114 for changing the magnification of the optical zoom finder 101, a lens 121 for changing the magnification of the optical zoom finder 101 and a lens 121 for changing the magnification of the optical zoom finder 101 at the same time. Move 122. Therefore, when the zoom motor 107 rotates, the cam ring 112 rotates and the zoom lens 102 rotates.
It is possible to simultaneously change the magnification of the optical zoom finder 101.

As an example, an embodiment in which the zoom lens 102 has a zoom ratio of 3, the electronic zoom magnification is 2, and the optical zoom finder 101 has a zoom ratio of 6 will be described. The cam A110 and the cam B111 of the cam ring 112 move the focus lens 115 and the variator lens 120 to predetermined positions corresponding to the zoom ratios 1 to 3 by the rotation of the zoom motor 107. This cam A110, cam B1
Reference numeral 11 denotes a focus lens 115 and a variator lens 120 for zooming to a predetermined position during zoom ratios 1 to 3.
However, when the zoom ratio becomes 3, only the cam ring 112 rotates while the lens positions of both lenses are fixed. That is, the cam A110 and the cam B11
Reference numeral 1 denotes a position where the zoom ratio is 3, which is extended in the rotation direction of the cam ring 112. Therefore, when the zoom ratio becomes 3, the zoom lens 102 keeps the zoom ratio at 3, and only the cam ring 112 continues to rotate, so that the lens 121 and the lens 12 for changing the magnification of the optical zoom finder 101.
2, the cam C113 and the cam D114 of the cam ring 112 are
Optical zoom finder 101
A zoom ratio of 6 is obtained.

At this time, the information of the zoom position detector 108 provided in the zoom lens 102 is input to the control circuit A106, and the electronic zoom circuit 105 electrically operates when the zoom ratio of the compact video camera is between 3 and 6. The image on the image sensor 103 is enlarged. When the zoom ratio is reduced from 6, the electronic zoom circuit 105 electrically reduces the image on the image sensor 103 when the zoom ratio is from 6 to 3, and when the zoom ratio is from 3 to 1. A focus lens 115 of the zoom lens 102, a variator lens 120 and a lens 121 of the optical zoom finder 101,
The lens 122 is connected to the cam A110 and the cam B1 of the cam ring 112.
11 and the cam C113 and the cam D114 to move and change the magnification.

Next, the focus operation will be described.
The focus lens 115 is guided by the focus mechanism 116, and is moved to the infinity side or the close side by the actuator 117. Autofocus determination circuit 118
Is a signal from the camera circuit 104, the zoom position detector 1
From the information from 08 and the information on the aperture value from the iris,
The position of the focus lens 115 on the infinity side or the close-up side is determined, and a signal is sent to the control circuit B119,
A signal from 119 operates the actuator 117 to set the focus lens 115 to the infinity side or the near side position. When the aperture value is large, that is, when the depth of field is large, such as when the aperture is stopped or at the wide end, it is not necessary to move the focus lens 115.

In the present embodiment, the same function as that of the conventional video camera is provided by the zoom lens and the electronic zoom circuit.
Since it has performance and the magnification of the optical zoom finder is set to be the same as the magnification when the zoom lens and the electronic zoom circuit are combined, by shooting with the compact video camera of this embodiment, This has the effect of matching the image recorded by the compact video camera with the image of the subject visually recognized by the optical zoom finder.

Further, the focusing mechanism and the actuator having a simple structure can realize a reliable focusing operation.

Next, the basic structure and function of the optical system for a compact video camera of the present invention will be described with reference to FIG. In the zoom lens of FIG. 22, 201 is a first lens group having a negative refractive power, 202 is a second lens group having a positive refractive power, and 20.
Reference numeral 3 denotes a negative meniscus lens having a convex surface facing the object side in the first lens group 201, 204 denotes a positive biconvex lens in the first lens group 201, and 205 a convex surface facing the object side in the second lens group 202. The negative meniscus lens 206 is a positive biconvex lens in the second lens group 202. During zooming from wide-angle to telephoto, the second lens group 202 moves toward the object side, and the first lens group 201 moves so as to prevent movement of the image plane position during zooming. It's working.

22 shows Numerical Embodiment 1 of the present invention shown in FIG. In the following “Numerical Examples”, r
(I) is the radius of curvature of the i-th lens surface s (i) in order from the object side, and d (i) is the lens surface s (i) to s (i +).
1) is the distance on the optical axis, N (j) and ν (j) are the refractive index and Abbe number of the j-th lens in order from the object side, and f is the focal length of the entire zoom lens system. Also, F
NO is the maximum aperture ratio, and ω is the angle of view.

Numerical Example 1 FNO = 1: 2.7 to 4.8 f = 5.22 to 15.01 ω = 59.81 ° to 22.61 ° s rd N ν 1 21.10 0 .50 1.69680 55.5 2 3.98 1.99 3 12.14 1.65 1.58390 30.3 4 * 24.56 Variable 5 (Aperture) 0.50 6 4.99 1.00 1. 84666 23.9 7 3.87 0.10 8 * 3.91 0.01 1.50703 53.4 9 3.91 6.00 1.49700 81.6 10 -13.78 0.01 1.50703 53 .4 11 * -13.78 In order to represent the relationship between the movement amounts of the first lens group 201 and the second lens group 202, the focal length f of the entire zoom lens system and the lens surface distance d (4) are variable. ) Values are shown below.

F 5.22 7.74 15.01 d (4) 11.49 6.25 1.00 Further, the lens surface marked with * is an aspherical surface, and the shape is expressed by the following expression by an aspherical coefficient. Is shown.

[0124]

## EQU1 ## Z = CH ² / (1 + 1- (K + 1) C ² Y
² ) + A ₄ Y ⁴ + A ₆ Y ⁶ + A ₈ Y ⁸ + A ₁₀ Y ¹⁰ (Equation 1) However, Z is from the tangent plane of the aspherical vertex of the point on the aspherical surface at the height Y from the optical axis. Distance, C is the curvature of the reference spherical surface (1 / r), K is the conic constant, Y is the height from the optical axis, A ₄
.About.A.sup.10 represent aspherical coefficients of 4th to _10th , respectively.

The aspherical surface coefficients in the above embodiment are shown below.

[0126] 4 _{side: K = -135.32 A 4 = 1.9010} ÷ 10 4 A 6 = -1.9053
÷ 10 ⁴ A ₈ = 2.0343 ÷ 10 ⁵ A ₁₀ = -1.3744
÷ 10 ⁶ 8 _{surface: K = -0.68289 A 4 = 5.9938} ÷ 10 4 A 6 = 1.5091 ÷
10 ⁴ A ₈ = -1.8459 ÷ 10 ⁵ A ₁₀ = 1.7038 ÷
10 ⁶ 11 plane: K = −1.2974 A ₄ = 6.2774 ÷ 10 ⁴ A ₆ = 2.7567 ÷
10 ⁴ A ₈ = -5.7906 ÷ 10 ⁵ A ₁₀ = 5.3171 ÷
10 ⁶ FIG. 23 and FIG. 24 are characteristic diagrams showing the aberration of << Numerical Example 1 >> described above. In FIG. 23, 0.9 is about 25 °, 0.6 is about 17 °, 0.9 in FIG. 24 is about 9 °, and 0.6 is about 6.
Indicates the angle of view of °.

Next, FIG. 25 shows a tenth embodiment of the optical system for a compact video camera of the present invention. Figure 25
207 is a first lens group having negative refractive power, 208 is a second lens group having positive refractive power, 209 is a negative meniscus lens having a convex surface facing the object side in the first lens group 207, and 210 is a first lens. A positive biconvex lens in the group 207, a negative meniscus lens 211 having a convex surface facing the object side in the second lens group 208, and a positive biconvex lens 212 in the second lens group 208.

During zooming from wide-angle to telephoto, the second lens group 208 moves toward the object side, and the first lens group 207 moves to prevent movement of the image plane position during zooming. The fact that the zooming action is performed is similar to << Numerical Example 1 >>. In this embodiment, the lens 211
And lens 212 are bonded together to make a lens.
The positions of the aspherical surfaces are provided on the fourth, sixth and eighth surfaces.

26 and 27 show the following << Numerical value example 2 >>.
6 is a characteristic diagram showing the aberration of FIG. 26 in FIG. 26 is about 25
° and 0.6 are about 17 °, and 0.9 in FIG. 27 is about 9
° and 0.6 indicate an angle of view of about 6 °.

Numerical Example 2 FNO = 1: 2.1 to 4.1 f = 5.22 to 15.01 ω = 59.81 ° to 22.61 ° s r d N v 1 36.40 0 .50 1.69680 55.53 2 4.07 1.6880 3 19.159 1.9500 1.80518 25.43 4 * 83.621 Variable 5 0.0 0.50 6 * 5.0111 1.0 1 .84666 23.88 7 3.8000 6.11 1.49700 81.61 8 * -12.877 aspherical coefficient 4 surfaces: K = -7110.574 A ₄ = 1.0178235 / 10 ⁴ A ₆ = -1 .79
96822/10 ⁴ A ₈ = 1.6235019 / 10 ⁵ A ₁₀ = -8.10.
80316 ÷ 10 ⁷ 6th surface: K = −. 2435676 A ₄ = -5.5408411 / 11 ⁵ A ₆ = 7.85
82398 ÷ 10 ⁶ A ₈ = 1.1998566 ÷ 10 ⁷ A ₁₀ = 2.068
7580/10 ⁸ 8th surface: K = -6.619274 A ₄ = 8.2403817 / 10 ⁴ A ₆ = 5.658
7933 ÷ 10 ⁶ A ₈ = -1.19677722 / 10 ⁶ A ₁₀ = 6.60
64723 ÷ 10 ⁷ Wide-angle end 4 surfaces d = 11.490 Intermediate 4 surfaces d = 6.2450 Telephoto end 4 surfaces d = 1.0000 Next, an eleventh embodiment of the optical system for a compact video camera according to the present invention is illustrated. 28. In FIG. 28, 21
3 is a first lens unit having a negative refractive power, and 214 is a second lens unit having a positive refractive power.
The lens group 215 is a negative meniscus lens having a convex surface facing the object side in the first lens group 213, 216 is a positive biconvex lens in the first lens group 213, and 217 is the second lens group 2
A negative meniscus lens with a convex surface facing the object side in 14,
218 is a positive biconvex lens in the second lens group 214. At the time of zooming from wide-angle to telephoto, the second lens group 21
4 moves to the object side, and the first lens group 213 moves so as to prevent the movement of the image plane position at the time of zooming. >>, << Numerical Example 2 >>. Also, lens 2
To attach 17 and lens 218 to form a lens,
This is the same as << Numerical Example 2 >>. However, the aspherical surface positions are provided on the second, fourth, sixth and eighth surfaces.

29 and 30 are characteristic diagrams showing the aberration of << Numerical Example 3 >>. 29 in FIG. 29 is about 25 °,
0.6 is about 17 °, 0.9 in FIG. 30 is about 9 °,
0.6 shows an angle of view of about 6 °.

Numerical Example 3 FNO = 1: 2.1 to 4.1 f = 5.22 to 15.01 ω = 59.81 ° to 22.61 ° s rd N ν 1 38.957 0 .50 1.69680 55.53 2 * 4.1123 1.6880 3 19.218 1.9500 1.80518 25.43 4 * 83.278 Variable 5 0.0 0.50 6 * 5.0112 1.00 1.84666 23.88 7 3.80 6.11 1.49700 81.618 8 * -12.874 aspherical coefficient 2nd surface: K = -3.0548979 / 10 ² A ₄ = 4.4982997 / 10 ⁴ A ₆ = -6.946
5721 ÷ 10 ⁵ A ₈ = 1.3608776 ÷ 10 ⁵ A ₁₀ = -1.059
6350 ÷ 10 ⁶ 4 _{sides: K = -9464.703 A 4 = 2.0535706} ÷ 10 4 A 6 = -2.065
5447/10 ⁴ A ₈ = 1.6829916 / 10 ⁵ A ₁₀ = -6.032
6909/10 ⁷ 6th surface: K =-. 2418764 A ₄ = -3.1943360 / 10 ⁵ A ₆ = 9.04
64873/10 ⁶ A ₈ = -1.7135034 / 10 ⁷ A ₁₀ = 2.624
3779 ÷ 10 ⁸ 8th surface: K = −6.674995 A ₄ = 8.2137901 ÷ 10 ⁴ A ₆ = 1.144
6028 ÷ 10 ⁵ A ₈ = 2.7033666 ÷ 10 ⁶ A ₁₀ = 1.877
8906 ÷ 10 ⁸ Wide-angle end 4 surfaces d = 11.490 Intermediate 4 surfaces d = 6.2450 Telephoto end 4 surfaces d = 1.0000 Next, an embodiment of the optical zoom finder will be described.

The following are numerical examples of the optical zoom finder.

Finder Numerical Example s rd N ν 1 * 9.8903 2.82 1.49200 57.88 2 * −29.273 Variable 3 118.64 1.00 1.49200 57.884 * 2.2301 1.9500 5 -5.1175 1.00 1.49200 57.886 6 * -6.3123 Variable 7-48.033 1.00 1.49200 57.88 8 * 7.1582 Variable 9 * 6 .2748 4.20 1.49200 57.88 10 * -6.1549 1.00 11 0.0 15.00 1.51680 64.20 12 0.0 7.4187 13 0.0 0.0 14 14. 0 1.4903 1.49200 57.88 15 * 0.0 0.100 16 0.0 15.000 1.51680 64.20 17 0.0 0.0 18 2 .417 3.6500 1.49200 57.88 19 * -8.5160 15.000 20 0.0 -328.41 r = 0.0, the radius of curvature indicates infinity, means the plane.

Aspherical surface coefficient 1st surface: K = 0.3198957 A ₄ = 7.9905571 / 10 ⁵ A ₆ = -5.347
5478/10 ⁶ A ₈ = 2.9742887 / 10 ⁷ A ₁₀ = -8.023
8349 ÷ 10 ⁹ 2nd surface: K = −54.64559 A ₄ = 1.3811154 ÷ 10 ⁴ A ₆ = 2.659
3332/10 ⁶ A ₈ = -2.0023585 / 10 ⁷ A ₁₀ = 9.65
89869 ÷ 10 ¹⁰ 4 surface: K = 1.6171070 ÷ 10 ² A ₄ = −6.1458391 / 10 ³ A ₆ = 2.123
6739/10 ³ A ₈ = -7.7408110 / 10 ⁴ A ₁₀ = 8.505
4373 ÷ 10 ⁵ 6 _{faces: K = 3.132076 A 4 = -2.6907029} ÷ 10 3 A 6 = 1.91
78184 ÷ 10 ⁴ A ₈ = 2.05395 17 ÷ 10 ⁵ A ₁₀ = -1.948
7412 ÷ 10 ⁵ 8 side: K = -. 8858749 A ₄ = -8.0499932 / 10 ⁴ A ₆ = -1.68
38676/10 ⁴ A ₈ = 2.2770950 / 10 ⁵ A ₁₀ = -7.910
0965 ÷ 10 ⁷ 9 surface: K = −2.053730 A ₄ = −7.1011159 ÷ 10 ⁴ A ₆ = 2.90
81054 ÷ 10 ⁶ A ₈ = 1.57961655 ÷ 10 ⁷ A ₁₀ = -1.874
5532 ÷ 10 ⁹ 10 side: K = -. 3345641 A ₄ = 4.477272521 / 10 ⁴ A ₆ = -1.124
7503/10 ⁵ A ₈ = 5.7751407 / 10 ⁷ A ₁₀ = -1.689
5013 ÷ 10 ⁸ 15 planes: K = 0.00 A ₄ = 1.29030351 ÷ 10 ³ A ₆ = −9.099
2588/10 ⁵ A ₈ = -1.8057049 / 10 ⁶ A ₁₀ = 6.188
8602 ÷ 10 ⁷ 19 planes: K = 6.7127548 ÷ 10 ² A ₄ = 3.1355282 / 10 ⁴ A ₆ = -1.781
9239 ÷ 10 ⁶ A ₈ = 1.17525281 ÷ 10 ⁷ A ₁₀ = -2.228
1019 ÷ 10 ⁹ Wide-angle end 2 faces d = 0.39000 6 faces d = 7.7870 8 faces d = 1.95534 Intermediate 2 faces d = 4.0851 6 faces d = 3.6548 8 faces d = 2.3904 Telephoto End 2 surface d = 7.7802 6 surface d = 1.4006 8 surface d = 0.95000 FIG. 3 is a lens configuration diagram of the above << finder numerical example>.
Shown in 1. FIG. 31 is an overall view of an optical zoom finder showing a twelfth embodiment of the present invention, which has a six-group configuration of I to VI. Reference numerals 251 and 252 denote prisms that have the role of vertically and horizontally inverting the image. s13 is a field frame surface, which is in contact with the s14 surface of the V group. S15 of V group
There is an air gap between the surface and the s16 surface of the prism B252.

With the above embodiment, good aberrations as shown in FIGS. 32 to 34 are obtained, and the zoom ratio is 5.6 times.
Maximum angle of view 53.5 degrees, paraxial magnification 0.44 to 2.46 times,
An optical zoom finder having a viewing angle of 25 degrees and a zoom ratio of 5.6 can be obtained. 32 in FIG. 32 is 16.1
°, 0.9 is 24.1 °, 0.6 in FIG. 33 is 8.71
°, 0.9 is 13.3 °, 0.6 in FIG. 34 is 3.1 °,
0.9 indicates an angle of view of 4.6 °.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 35 is a configuration diagram showing a lens for a video camera with an electronic zoom as a thirteenth embodiment of the present invention.
In the figure, 301 is a zoom lens composed of a plurality of lenses 302 (specifically, seven lenses 321 to 327), and 303 is an image pickup composed of a sensor for converting an image of a subject formed by the zoom lens 301 into an electric signal. It is an element. Reference numeral 304 is a focus mechanism for moving the zoom lens 301 to move the focus of the zoom lens 301 in the optical axis direction, 305 is a stepping motor for driving the focus mechanism 304, and 306 is a rotation for the stepping motor 305. 307 is a lens position detector that detects the position of the stepping motor 305 as a lens position, and 308 is a
An aperture value detector for detecting the aperture value of the zoom lens 301,
Is. Besides, a reference numeral 309 denotes a cam ring having grooves for moving the lenses constituting the zoom lens 301 (specifically, a variator composed of the lenses 324 to 326 and a compensator composed of the lens 327. (For changing the lens interval for adjustment), 310
Is a zoom ring that rotates the cam ring 309, and 311 is a zoom position detector that is connected to the zoom ring 310 and that detects the focal length of the zoom lens 301. Again 312
Is an electronic zoom circuit that electrically enlarges the output image of the image sensor 303, 313 is a preamplifier circuit that amplifies the output of the image sensor 303, and 314 is a high frequency output from the output of the preamplifier circuit 313. The high-frequency component extraction circuit 315 for separating high-frequency signal components, the detection circuit 316 for extracting a necessary signal portion from the output of the high-frequency component extraction circuit 314,
A synchronous detection circuit that integrates the output of the detection circuit 315 and converts it into a DC signal. Further, 320 is a synchronous detection circuit 31.
Reference signal generating circuit for generating synchronization signal in 6
Is an automatic focusing circuit 318 which gives a signal for driving the stepping motor 305 to the drive circuit 306 by each output of the lens position detector 307, the aperture value detector 308, and the zoom position detector 311. An electronic zoom control circuit that controls the enlargement ratio in the electronic zoom circuit 312 according to the output. Reference numeral 319 is a camera circuit that uses the output of the electronic zoom circuit 312 as a normal video signal.

Numerical examples in the configuration of this embodiment are shown below. The focal length of the zoom lens 301 is 5 mm to 15 m
can be changed to m. The F value, which is the brightness of the zoom lens 301, is F = 3 when the focal length is 15 mm. The effective sensor range of the image sensor 303 is 3.
6mm, width 4.8mm, diagonal length 6mm
Has become. The number of sensors on the image sensor 303 is about 360,000, which is 490 vertically and 730 horizontally. The magnification of the electronic zoom is 1 to 2 times in terms of magnification.

The circuit operation of the above structure will be described below. The zoom lens 301 rotates the cam ring 309 by rotating the zoom ring 310 and moves the lens (the variator including the lenses 324 to 326 and the lens 32).
The focal length of the zoom lens 301 is 5 mm to 15 m (relatively changing the distance between the compensator consisting of 7).
Vary within the range of m.

FIG. 36 shows the change characteristic of the focal length. Figure 3
6, the vertical axis represents the focal length of the zoom lens 301, and the horizontal axis represents the rotation angle of the zoom ring 310. Zoom lens 30
After the focal length of 1 exceeds 15 mm, the zoom ring 31
It can be seen that although 0 and the cam ring 309 rotate, the groove provided in the cam ring 309 is constant, the position of the lens is constant, and the focal length does not change.

In the electronic zoom circuit 312 shown in FIG. 35, the zoom ring 31 output by the zoom position detector 311 is used.
From the image sensor 303 to the camera circuit 31 according to the rotation angle of 0.
Change the expansion rate to 9. This will be described with reference to FIG. In FIG. 37, the vertical axis indicates the enlargement ratio of the electronic zoom circuit 312,
The horizontal axis indicates the rotation angle of the zoom ring 310.

From FIG. 37, from the angle where the focal length of the zoom lens 301 exceeds 15 mm, the zoom ring 3 having a focal length longer than that is obtained.
It will be understood that at the turning angle of 10, the enlargement ratio of the electronic zoom circuit 312 has a characteristic of continuously changing from 1 × to 2 ×. By doing so, the image input by the image pickup device 303 to the camera circuit 319 has the magnification shown in FIG. That is, FIG. 38 shows the zoom lens 3
When the focal length of 01 is 5 mm, the image size is 1, and
9 is a graph showing a change in how many times the size of an image of the same subject changes when the zoom ring 310 is continuously rotated. The vertical axis represents the image size, and the horizontal axis represents the rotation angle of the zoom ring 310. Depending on the rotation of the zoom ring 310, 1 to
It will be seen that the image size changes continuously by a factor of six.

The effects of this embodiment will be described by the above-described operation. In the present embodiment, the same operation as that of the conventional video camera is performed in a range in which the zoom lens 301 is operated and the electronic zoom is not operated (up to a magnification of 3). A case where the electronic zoom is operated from a position beyond the operating range of the zoom lens 301 (magnification of 3 to 6 times) will be described with reference to FIG. 39. FIG. 39 is a graph showing the relationship between the electronic zoom magnification and the horizontal resolution. The vertical axis represents the horizontal resolution, and the horizontal axis represents the electronic zoom magnification. Since the horizontal resolution in normal TV broadcasting is about 350 lines,
It can be seen that the 2 × electronic zoom used in this embodiment has almost the same resolution as that of normal television broadcasting.

In this embodiment, the image pickup device composed of about 360,000 sensors is used. However, if a slight deterioration in image quality is allowed, an image pickup device having a smaller number of sensors can be used. . As described above, in the present embodiment, by using the 3 × zoom lens, the performance is equivalent to that of the conventional video camera using the 6 × zoom lens, and there is an effect that miniaturization can be realized. In other words, since the 6x zoom is realized by using the 3x zoom lens and the 2x electronic zoom together, the zoom lens can be used in comparison with the case where the 6x zoom is realized only by the zoom lens. Since it can be downsized (the distance between lenses can be small), it can be downsized as a whole, and the electronic zoom can be about 2 times the magnification, so deterioration of the image quality due to it is acceptable as the resolution of ordinary TV broadcasting. It is within the range that is said to be convenient.

Next, a fourteenth embodiment of the present invention will be described.
This will be described with reference to FIG. FIG. 40 is a configuration diagram of a lens for a video camera with an electronic zoom as a fourteenth embodiment of the present invention. In the figure, the same components as those of the thirteenth embodiment shown in FIG. 35 are designated by the same reference numerals and the description thereof will be omitted. With the configuration shown in FIG. 40, the 13th shown in FIG.
The difference from the configuration of the embodiment is that the lens configuration of the zoom lens 323 is changed and the zoom method is changed.
The zoom lens 323 shown in FIG. 40 includes two lens groups (a front lens group including the lenses FL1 and FL2 and a rear lens group including the lenses RL1 and RL2), and these two lens groups are moved relative to each other. To zoom in. The focal length and F value are the same as those of the thirteenth embodiment shown in FIG. In the above-described configuration, the operation does not change in the essential operation because the zoom mechanism is changed depending on the change in the zoom method, and only the change is made accordingly.

The effect of this embodiment is that the zoom lens and the electronic zoom circuit achieve the same functions and performances as those of the conventional video camera while achieving miniaturization. Similar to that. Moreover, since the zoom lens 323 is configured by two lens groups, the configuration is simpler than that of the thirteenth embodiment. It goes without saying that the combination of the configurations used in this embodiment is not limited to this, and they can be used independently.

Next, a fifteenth embodiment of the present invention will be described. FIG. 41 is a configuration diagram of a lens for a video camera with an electronic zoom as a fifteenth embodiment of the present invention. Regarding the same configuration as the thirteenth embodiment shown in FIG. 35,
The same numbers are assigned and the description is omitted. The difference from the thirteenth embodiment is that an optical zoom finder 328 configured by combining a lens 327 is attached. Reference numeral 331 is an eyepiece lens. The optical zoom finder 328 has a variable power unit 329 in which two lenses 327 are combined. The two lenses 327 move at fixed intervals by the rotation of the finder cam 330. In the variable power unit 329, the angle of view visible when the two lenses 327 are moved and seen through the eyepiece (eyepiece 331) changes. FIG. 42 shows how the angle of view changes at this time. FIG. 42 is a graph showing the relationship between the rotation angle of the finder cam 330 of the optical zoom finder 328 and the angle of view. The angle of view is the angle of view in the lateral direction of the optical finder 328. The angle of view is θ,
When the focal length f is obtained from the angle of view corresponding to the image sensor 303 of the zoom lens 301 using the lateral length of the image sensor 303 of 4.8 mm, the following formula is obtained.

[0148]

43 is obtained by converting the angle of view of the optical zoom finder 328 into the focal length of the zoom lens 301 from the above equation. F = (4.8 / tan (θ / 2)) / 2 (Equation 2) It becomes a graph. FIG. 43 is a graph showing the relationship between the rotation angle of the finder cam 330 of the optical finder 328 and the converted focal length.

The operation of the above arrangement will be described below. In this embodiment, in addition to the operation of the thirteenth embodiment shown in FIG. 35, the angle of view of the optical zoom finder 328 changes in conjunction with the rotation of the zoom ring of the zoom lens 301. As described above, the change in the angle of view of the optical zoom finder 328 with respect to the rotation angle of the zoom ring 310 at this time has the same magnification as that shown in FIG.

The effects of this embodiment will be described. This embodiment is similar to the thirteenth embodiment in that the zoom lens and the electronic zoom circuit achieve the same functions and performances as those of the conventional video camera while achieving miniaturization. Furthermore, since the optical zoom finder is set to the same magnification as when the zoom lens and the electronic zoom circuit are combined, it is possible to check the image taken using the video camera of this embodiment and the optical zoom finder. There is an advantage that the image of the subject is the same.

FIG. 44 shows a sixteenth embodiment of an optical transmission system using the magnetic recording / reproducing apparatus with an optical transmission function according to the present invention. A camera-integrated VTR (compact video camera) is a camera-integrated VTR interface device. Two types of transmission methods are supported: near-field transmission in which a compact video camera is placed on a (station) to transmit an infrared signal, and spatial transmission in which a compact video camera is separated from the station to transmit an infrared signal.

Reference numeral 401 is a video camera, 402 is a microphone, 403 is a driver, 404 to 408 are input / output terminals, 409 is a VTR, 410 is a wide ID signal generation / discrimination circuit, 411 is a system controller, 412 is a remote control light receiving section, 414. 421 is an input terminal, 422 is RE
C amplifier, 423 preamplifier, 424 magnetic tape,
425 and 426 are recording magnetic heads, 427 and 428 are reproducing magnetic heads, 429 is a modulator, 430 is a mixer,
431 is an output terminal for presence / absence of optical signal emission, 432 is a drive circuit,
433 is an infrared light emitting diode (LED), 434 is a mixer, 435 is a drive circuit, 436 is an infrared light emitting diode (LED), 437 is a photodiode, 438 is an amplifier, 439 is a demultiplexer, 440 is a demodulator, 441 to 441 44
Reference numeral 5 is an output terminal, 446 is an optical signal receiver, and 474 is an input terminal for turning the movie power ON / OFF. Here, it is assumed that the optical signal receiving unit 446 is built in the station that receives the infrared signal. Also, the input terminals 415-420
, "H" is input for each of recording, reproduction, fast-forwarding, rewinding, pausing, and stopping, but otherwise "L" is input. Furthermore, the input terminals 415 to 415
The signal input to the system controller 411 from 420 can also be input using an external remote controller.
In this case, the infrared signal from the remote controller is converted into an electric signal by the remote controller light receiving unit 412 and supplied to the system controller 411.

First, a method of transmitting a signal between the compact video camera and the station will be described with reference to FIGS. FIG. 45 shows a case of near field transmission in which a compact video camera is mounted on a station to transmit a signal. 456 is a compact video camera, 457 is a station, 458 is a TV, and 459 is a connection cord. Here, between the TV 458 and the station 457,
Connection cords 459 for video, audio and control signals
Connect in advance and place.

In order to display the video captured by the compact video camera 456 on the TV 458, the compact video camera 456 is simply placed on the station 457 to complete the connection. At this time, an infrared signal is spatially transmitted for only a few centimeters between the compact video camera and the station to transmit the video and audio signals to the station 457. In this case, the infrared signal light emitting portion of the compact video camera 456 is located on the bottom surface of the compact video camera, and the infrared signal light receiving portion of the station 457 is located on the upper surface of the station. Further, the compact video camera 456 is directly powered by the DC output of the station 457.

On the other hand, FIG. 46 shows the case of space transmission in which signals are transmitted several meters apart without mounting the compact video camera on the station. In this case as well, the TV 458 and the station 457 are connected in advance by connecting cords 459 for video, audio and control signals. At this time, in order to display the video captured by the compact video camera 456 on the TV 458, the infrared signal is spatially transmitted from the compact video camera 456 to the station 457, and the video and audio signals are transmitted to the station 457. In this case, the infrared signal emitting portion of the compact video camera 456 is located on the upper surface or the side surface of the compact video camera, and the infrared signal receiving portion of the station 457 is also located on the upper surface or the side surface of the station 457. In addition, the infrared signal emitting portion of the compact video camera can be attached to the upper surface as a pop-up type, and can be lifted and used when necessary. In this case, if the infrared signal emitting section is added with a function of automatically lifting when used, the usability is further improved.
In the case of spatial transmission, a compact video camera 456
Shall be powered by batteries installed in a compact video camera.

In FIG. 44, the modulator 429 and the mixer 4
When the STOP1 signal supplied to 30 is “L”,
Each operation shall be stopped. Further, when the STOP2 signal is “L”, the operation of the drive circuit 432 is stopped, and when the STOP3 signal is “L”, the mixer 434.
The operation of the drive circuit 435 is stopped. Furthermore, when a code is connected to the input / output terminals 404 to 408, the output signal STOP4 of the driver 403 is "
L ", and when not connected, STOP4 is"
H ". Also, when the LED emits light, LE
"H" is output from the D light emission presence / absence signal output terminal 431,
When the LED emission is stopped, "L" is output.
Therefore, in this embodiment, it is possible to notify the user by displaying that the LED is emitting light. Furthermore, when the power switch of the compact video camera is ON, “H” is input to the input terminal 474, but when the power switch is OFF, “L” is input.

First, the case where the camera / VTR selector switch output signal input to the input terminal 414 becomes "L" and the camera mode is selected will be described.

The video signal photographed by the camera 401 is subjected to signal processing by the camera 401, and then the luminance signal (Y) and the chroma signal (C) are supplied to the VTR 409. Also, the microphone 40
L channel (AL) and R channel (A
The R) audio signal is similarly supplied to the VTR 409. VT
In R409, the luminance signal (Y) is FM-modulated, and the chroma signal (C) is frequency low-pass converted from 3.58 MHz and converted into a video signal in which each is mixed. On the other hand, the audio signal input to the microphone 402 is also VTR4.
FM modulation is performed at 09, and these video signals and FM audio signals are added at the VTR 409.

Here, when the recording start signal is input to the input terminal 415, the video signal and the FM audio signal added by the VTR 409 are supplied to the REC amplifier 422.
After amplification by the REC amplifier 422, the magnetic heads 425, 42
6 is recorded on the magnetic tape 424.

Then, the input signal to the input terminal 414 is "
A case will be described in which it becomes "H" and the mode is switched to the VTR mode.

When the reproduction start signal is input to the input terminal 416, the magnetic heads 427 and 428 reproduce the video signal and the FM audio signal from the magnetic tape 424. Then, these signals are amplified by the preamplifier 423 and supplied to the VTR 409. The video signal input to the VTR 409 is converted into a luminance signal (Y) and a chroma signal (C) by the luminance signal processing circuit and the chroma signal processing circuit in the VTR 409. In addition, the FM audio signal input to the VTR 409 can also be stereo-fed by the BPF in the VTR 409.
Each of the M audio signals is extracted and then converted into an L channel (AL) and R channel (AR) audio signal by an FM audio signal demodulation circuit.

Next, the transmission of infrared signals between the compact video camera and the station will be described. Here, it is assumed that no code is connected to the input / output terminals 404 to 408 and the output signal STOP4 of the driver 403 is "H".

First, the case of near field transmission in which a compact video camera is mounted on a station and signals are transmitted will be described. When the compact video camera is mounted on the station, the compact video camera is automatically supplied with power from the DC output of the station, and "H" is input to the station connection state input terminal 421.

In this case, the output signals STOP1 and STOP3 of the system controller 411 are always "H", and STOP2 is always "L". Therefore, the modulator 429, the mixers 430 and 434, and the drive circuit 435 always operate, but the drive circuit 432 always stops operating.

The luminance signal (Y), the chroma signal (C), and the L channel (AL) and R channel (AR) audio signals output from the VTR 409 are modulated by the modulator 429 and output to the mixer 430. The control signal (CTL) supplied from the system controller 411 is also modulated by the modulator 429 and then output to the mixer 434. In the mixer 430, the modulated luminance signal
(Y), the chroma signal (C), and the audio signals (AL, AR) are mixed, and the modulated control signal (CTL) is added by the mixer 434 and output to the drive circuit 435.
The added signal is converted into an infrared signal by the LED 436 and is constantly transmitted to the station. On the other hand, since the drive circuit 432 is always stopped, the mixer 430
Is not transmitted from the LED 433.

As described above, in the case of proximity transmission in which a compact video camera is mounted on a station to transmit signals, video, audio and control signals are always transmitted from the compact video camera to the station. This is because the compact video camera can be supplied with DC power from the station, so it is not necessary to consider replacing the battery.

The infrared signal transmitted from the LED 436 is received by the photodiode 437 of the station and converted into an electric signal. This electric signal is sent to the amplifier 43
Amplified by 8 and further divided by a demultiplexer 439, luminance signal (Y), chroma signal (C), audio signal (AL, AR), control signal
(CTL) modulated signals are separated. The demodulator 440 demodulates each modulated signal and outputs the output terminals 441 to 445.
To output respectively. These signals are transmitted from the station to the TV and VTR via the connection cord, so simply by mounting the compact video camera on the station,
It enables playback and editing of videos taken with a compact video camera.

Here, the control signal (CT
L) is also supplied. Therefore, by giving the control signal (CTL) a power supply control signal for TV and VTR and an input mode switching signal transmitted by the conventional AV bus cable, the optical transmission system can have the function of the AV bus cable. Is possible. In this case, since the infrared signal is transmitted only to the station, malfunction of other devices does not occur.

By the way, the control signals for the TV and VTR are different for each company. Therefore, in order to add a control signal corresponding to each company's TV and VTR to the infrared signal, in this embodiment, the compact video camera is provided with a learning function of each company's remote control signal. This is the remote control light receiving unit 4 that receives infrared signals from the remote control of each company.
The signal is received at 12, and the received signal is stored in the system controller 411.

Next, the case of space transmission in which signals are transmitted several meters apart without mounting the compact video camera on the station will be described. In this case, the compact video camera shall be driven by the battery attached to the compact video camera. Further, "L" is input to the station connection status input terminal 21.

In this case, the output signal STOP3 of the system controller 411 is always "L". Therefore, the mixer 434 and the drive circuit 435 always stop operating, and the LE
No infrared signal is transmitted from D436. Further, when the input signal to the input terminal 414 is "L" and the camera mode is switched to, the STOP1 and STOP2 are always "always".
L ″ and the modulator 429, the mixer 430, and the drive circuit 43
2 always stops operating.

On the other hand, the input signal to the input terminal 414 is "
When the VTR mode is switched to "H", the system controller 4 starts when the compact video camera starts reproduction by the reproduction start signal input to the input terminal 416.
STOP1 and STOP2 output from 11 automatically become "H". Therefore, the modulator 429, the mixer 4
30, the driving circuit 432 starts the operation, and the luminance signal (Y), the chroma signal (C), and the L channel (AL) and R channel (AR) audio signals output from the VTR 409 are modulated by the modulator 429 and mixed. It is output to the container 430. Thereafter, the luminance signal (Y), the chroma signal (C), and the audio signals (AL, AR) are added by the mixer 430, and the driving circuit 4 is added.
Is output to 32. Further, this added signal is L
It is converted into an infrared signal by the ED 433 and transmitted to the station.

The infrared signal transmitted from the LED 433 is received by the photodiode 437 of the station and converted into an electric signal. This electric signal is sent to the amplifier 43
It is amplified by 8 and further separated by the demultiplexer 439 into the modulated signals of the luminance signal (Y), the chroma signal (C), and the audio signals (AL, AR). The demodulator 440 demodulates each modulated signal and outputs it from the output terminals 441 to 444, respectively. These signals are sent from the station via the connection cord to the TV, VT.
Since it is transmitted to R, it is possible to play back and edit the video shot by the compact video camera.

Here, the case where a fast-forward or rewind signal is supplied to the input terminal 417 or 418 during reproduction (fast-forward reproduction or rewind reproduction) will be described.
In this case, STOP1 and STOP2 of the system controller 411 remain "H", and infrared light emission is continued. Also, when a pause signal is input to the input terminal 419 (playback pause), STOP1 and STOP
P2 remains "H", and infrared rays are transmitted. However, when the reproduction stop signal is input to the input terminal 420, the reproduction from the magnetic tape is stopped, and STOP1 and S
TOP2 automatically becomes "L". Therefore, modulator 4
29, the mixer 430, and the drive circuit 432 stop operation | movement, and also the transmission of the infrared signal from LED433 is stopped.

On the other hand, if the fast-forward signal or the rewind signal is supplied to the input terminal 417 or 418 while the reproduction is stopped to fast-forward or rewind the tape, S
TOP1 and STOP2 remain "L", and infrared rays are not transmitted.

As described above, the transmission of the infrared signal from the LED 433 is limited only when the input signal to the input terminal 414 is the VTR mode and the video and audio signals are being reproduced from the magnetic tape. As a result, the compact video camera automatically operates the optical transmission unit only when reproducing from the magnetic tape that requires optical transmission of signals to the TV and VTR,
In other cases, the operation can be stopped, and the consumption of the battery when infrared transmission is unnecessary can be suppressed. In this case, the control signal (CTL) from the system controller 411 is not added to the infrared signal. Therefore, it is impossible to provide the function of the AV bus cable for automatically controlling the power supply of the TV and VTR and switching the input mode during the video reproduction.

Next, input terminals 404 to 408 are connected to TV, V
A case where the connection cable with the TR is connected will be described. In this case, since the STOP4 signal supplied from the driver 403 to the system controller 411 becomes “L”, the STO output from the system controller 411.
The P1, STOP2 and STOP3 signals are always "L", and the infrared signal is not transmitted. Therefore, VTR40
The luminance signal (Y), the chroma signal (C), and the audio signals of the L channel (AL) and the R channel (AR) output from 9 are supplied to the driver 403, and input / output terminals 404 to 408 via a connection cable. Output to a TV or VTR. On the other hand, when signals are transmitted from the TV or VTR to the compact video camera, the luminance signal (Y), chroma signal (C), and audio signals (AL, AR) from the TV or VTR are input / output via the connection cable. It is supplied to the terminals 404 to 408 and output to the VTR 409.

Next, the wide ID signal generation / discrimination circuit 410 in this embodiment will be described. Currently, the screen of TV broadcasting has an aspect ratio of 3: 4, but in the future high-definition broadcasting, a wide screen with an aspect ratio of 9:16 will be used. Therefore, the output signal of the VTR 409 is supplied to the wide ID signal generation / discrimination circuit 410, and the discrimination result of the wide screen is output to the VTR 409 and the system controller 411. When the video signal to be optically transmitted is a wide screen, the receiving side TV can be automatically switched to the wide screen by also transmitting the switching signal to the wide screen.

Next, FIG. 47 shows a method for driving the magnetic recording / reproducing apparatus with an optical transmission function shown in FIG. 44, an infrared signal transmission method, the presence or absence of LED light emission control, and an AV for controlling the TV and VTR.
6 shows a flowchart regarding the presence or absence of a bus cable function.

When a compact video camera is mounted on a station to transmit signals, that is, when connected to the station, the DC output generated in the station is supplied as the power source for the compact video camera, and infrared transmission is only a few. Proximity transmission that transmits about a centimeter may be sufficient. In this case, it is not necessary to consider replacing the battery, so L
The ED is not controlled for light emission, and video and audio signals are always transmitted optically to the station. Further, since the control signal by infrared rays is not transmitted to other devices to cause a malfunction, the conventional AV bus cable function can be added to the infrared signals.

On the other hand, when the compact video camera is separated from the station and is not connected to the station, the compact video camera is driven by a battery, and infrared rays are transmitted in space of several meters. In this case, in order to suppress the consumption of the battery as much as possible, the emission control of the LED is performed and the infrared signal is transmitted only when reproducing the video and audio signals from the magnetic tape. Furthermore, since it is quite possible that a control signal by infrared rays is transmitted to another device to cause a malfunction, in this case, the conventional AV bus cable function is not added to the infrared signal.

The light-receiving photodiode 437 can be combined with one photodiode by using an optical waveguide. In this case, it is preferable to provide an optical waveguide in the near field transmission system because of problems such as signal saturation of the photodiode.

Next, FIG. 48 shows a flow chart of LED light emission ON / OFF and TV, VTR control signal output of the magnetic recording / reproducing apparatus with an optical transmission function shown in FIG.

When the compact video camera is powered on, it is first checked whether or not the connection cord is connected to the compact video camera, and when the connection cord is connected, the LED emission is always stopped. Next, the connection status of the compact video camera and the station is confirmed,
For near field transmission, the compact video camera is powered directly from the station's DC output. On the other hand, in the case of spatial transmission away from the station, the compact video camera is driven by a battery.

Here, first, the case of near field transmission in which a compact video camera is mounted on a station will be described. In this case, the LED always emits light while the compact video camera is powered on. When the LED starts to emit light, first, the TV power-on signal and the TV channel switching signal to the video input are output. After that, the power-on signal of the VTR and the input mode switching signal of the VTR to the external input are output, and the TV, VT
The R preparatory work is automatically completed. Thereafter, the compact video camera constantly transmits the video, audio, and control signals to the station.

Here, when the video signal output from the compact video camera is a wide screen, a switching signal to the wide screen is issued to automatically switch the TV to the wide screen. When a signal for turning off the power of the compact video camera is input, the emission of the LED automatically stops after the TV channel switching signal and the VTR input mode switching signal are output.

On the other hand, in the case of space transmission in which the compact video camera is away from the station, first, the camera /
The output signal of the VTR switch is confirmed. And
LED when the compact video camera is in camera mode
However, in the VTR mode, when the playback switch of the compact video camera is pressed, the LED
The light emission of starts. In this case, the power control of the TV and VTR and the input mode switching signal are not transmitted.

After that, the video and audio signals reproduced by the compact video camera are optically transmitted. Here, when the reproduced video signal is a wide screen, a switching signal to the wide screen is issued and the TV is automatically switched to the wide screen. The transmission of the video and audio signals is continued until the reproduction stop switch is pressed. When the reproduction stop switch is pressed, the light emission of the LED is automatically stopped, so that the battery consumption of the compact video camera can be suppressed as much as possible.

Next, referring to FIG. 49, STOP1, STOP2, STOP3 by the system controller 411 will be described.
An embodiment of the input / output control circuit for the STOP4 signal will be described.

Reference numerals 460 to 463 are input terminals, and 464 to 46.
7 is an AND circuit, 468 is an OR circuit, 469 is an inverter circuit, 470 to 473 are output terminals, 474 is an input terminal, and 476 is an AND circuit. Here, in the compact video camera power ON / OFF signal input terminal 474,
"H" is input when the power of the compact video camera is ON, and "L" is input when the power of the compact video camera is OFF. Further, "L" is input to the camera / VTR signal input terminal 461 when the compact video camera is in the camera mode, and "H" is input when the compact video camera is in the VTR mode. In addition, the station connection status input terminal 463 has a compact video camera mounted on the station when performing near field transmission.
"H" is input and "L" is input during space transmission when the compact video camera is away from the station.
In addition, the input / output terminals 404 to 4 of the compact video camera
If the connection cord is connected to 08, STOP4
The signal becomes "L" and becomes "H" when not connected. Further, "H" is input to the input terminal 462 while the video and audio signals are reproduced from the magnetic tape by the compact video camera, and "L" is input otherwise.

Here, first, the case where the power source of the compact video camera 456 is OFF will be described. In this case, since "L" is input to the input terminal 474,
The outputs of the AND circuits 476, 465, 466, 467 are "L". Therefore, STOP1, STOP
2, the STOP3 signal becomes "L", and the infrared signal is not transmitted.

Next, the case where the compact video camera 456 is powered on will be described. In this case, “H” is input to the input terminal 474. Here, when a connection cord is connected to the compact video camera 456, the STOP4 signal becomes "L", so the AND circuit 4
76 is always "L", and STOP1, STOP2, S
Each of the TOP3 signals becomes "L". However,
When the connection cord is not connected to the compact video camera 456, the STOP4 signal becomes "H".
The AND circuit 476 is always "H". So, next,
Consider the case where the AND circuit 476 is "H".

First, in the case of near field transmission in which the compact video camera 456 is mounted on the station 457, "H" is input to the input terminal 463. Therefore, the output of the OR circuit 468 becomes "H" and the output of the AND circuit 465 also becomes "H". Further, since the output of the inverter circuit 469 becomes "L", the STO is used during the proximity transmission as described above.
P1 and STOP3 signals are always "H", and STOP2
Since the signal is always "L", it is always an LED for proximity transmission.
Only emit infrared signals.

On the other hand, in the case of spatial transmission in which the compact video camera 456 is separated from the station 457, "L" is input to the input terminal 463. Therefore, when the compact video camera 456 is in the camera mode, “L” is input to the input terminal 461, and the AND circuit 464 is input.
Of the OR circuit 468 is always "L", so that the output of the OR circuit 468 is also "L". As described above, in the case of space transmission, the output of the AND circuit 465 is always "L" in the camera mode, so that the STOP1, STOP2, and STOP3 signals are "L", and the infrared signal is not transmitted.

However, the compact video camera 4
In the VTR mode of 56, since "H" is input to the input terminal 461, "H" is input to the input terminal 462 and the output of the AND circuit 464 is output while the compact video camera 456 is reproducing from the magnetic tape. It becomes "H". Therefore, the output of the OR circuit 468 becomes "H" and the output of the AND circuit 465 also becomes "H". As described above, in the case of space transmission, STOP1 and STOP are available only when the compact video camera 456 is in the VTR mode and reproducing from the magnetic tape.
Since the 2 signal becomes "H" and the STOP 3 signal becomes "L", only the space transmission LED emits an infrared signal.

As described above, in this embodiment, the control signal
As (CTL), the case where the AV bus cable function for controlling the power supply of the TV and VTR and the input mode switching is added to the infrared signal has been described, but it is also possible to add a synchro edit signal to the infrared signal. With this synchronized edit signal, the compact video camera 456
When performing dubbing with the player as a playback device and the VTR as a recorder,
It becomes possible to collectively control the suspension and the suspension release of both units by the compact video camera 456 on the reproducing side, which greatly improves the usability during video editing. This synchronized edit signal may be simultaneously transmitted as a control signal (CTL) during the transmission of the video and audio signals.

Further, in the present embodiment, the addition of the control signal (CTL) to the infrared signal is limited only to the proximity transmission in which the compact video camera 456 is mounted on the station 457 and used, thereby preventing malfunction of other equipment. Although it was prevented, the compact video camera 456 was attached to the station 45.
It is also possible to add it to the infrared signal at the time of space transmission in which it is transmitted away from 7. In this case, in order to prevent malfunction of other devices as much as possible, only the AV bus cable function is added without adding the sync edit signal. Also, this AV
The bus cable function may be added to the infrared signal and transmitted when the LED emission starts and when the LED emission stops.

Furthermore, in the present embodiment, in space transmission in which the compact video camera 456 is transmitted away from the station 457, LE is used only when the video and audio signals are reproduced from the magnetic tape in order to suppress battery consumption as much as possible.
I controlled the D to emit light automatically, but the camera / VT
The R switching signal may be controlled to always operate when VTR.

Next, FIG. 50 shows the compact video camera 4
A flow chart for confirming the connection between 56 and the station 457 is shown. Here, the compact video camera 456 and the station 457 are provided with detection switches in advance, and the compact video camera 456 is installed in the station 45.
When mounted on the No. 7, the detection switch is turned on, and the connection can be confirmed on both the compact video camera 456 side and the station 457 side. Then, while the connection switch of the station 457 is ON, the current is constantly detected on the side of the station 457, and while the current is being supplied to the compact video camera 456, a display is given to inform the user. Also,
While the connection switch of the station 457 is ON, the infrared signal is constantly detected on the side of the station 457, and while the infrared signal is being received, a similar display is given to inform the user.

When the connection is confirmed by the above detection switch, the compact video camera 456 side automatically turns on the power and controls so as to receive the power directly from the DC output of the station 457. On the other hand, on the station 457 side, current detection is performed, and the compact video camera 45 is operated for a certain time t1 after the detection switch is pressed.
Check the power supply connection to see if the current is normally supplied to 6. If the supply is not normal, the station 457 gives a warning to inform the user of the poor connection.

On the compact video camera 456 side, the L level is automatically set after a certain time t1 from when the detection switch is pressed.
The light emission of the ED is started, and the infrared signal for connection confirmation is transmitted to the light receiving section of the station 457. Station 45
The 7 side receives the infrared signal and confirms the optical signal connection. When the transmission is not normally performed, a warning is issued from the station 457 to inform the user of the poor connection. The emission of the infrared signal from the compact video camera 456 and the confirmation of the optical signal connection at the station 457 automatically start after a lapse of a certain time t1 after the detection switch is pressed, and automatically end after t2 (t2> t1).

With the above, connection confirmation of the power supply and the optical signal is completed. When the power switch of the compact video camera 456 is switched to the camera or VTR, the operation shown in FIG. 48 is started. On the other hand, when the power switch is switched to battery charging, power supply to the compact video camera 456 is stopped and charging of the secondary battery attached to the compact video camera 456 is started.

The timing of the above connection confirmation work is shown in FIG.
Shown in. As shown in FIG. 51, the connection confirmation work between the compact video camera 456 and the station 457 in this embodiment is automatically performed immediately after the compact video camera 456 is placed on the station 457. Here, it is assumed that the warning of poor connection is stopped when the compact video camera 456 is separated from the station 457 and the detection switch is turned off. Also, after the above connection confirmation,
At the station 457, current detection and infrared detection are always performed while the connection switch is ON. Therefore, when reproducing the compact video camera 456 or charging the battery, the power source and the infrared signal connection can be confirmed by the display at the station 457.

FIG. 52 shows the seventeenth embodiment of the present invention.
This will be described with reference to FIGS. 53, 54 and 55. Note that FIG.
4, those having the same operations as those shown in FIGS. 45 and 46 are designated by the same reference numerals, and the description thereof will be omitted. 52 is a block diagram of a sixteenth embodiment of the present invention, FIG. 53 is an external view showing the use of a compact video camera 456 and a station 457, and FIG. 54 is a compact video camera 45.
6 is a cross-sectional view of an essential part in which 6 and the station 457 are combined,
FIG. 55 is a cross-sectional view of the left side surface of FIG. 54.

In FIG. 52, reference numeral 480 is an LED driver for driving an infrared LED, and 481 is a data conversion microcomputer for transmitting other control data such as video and audio by infrared light in a signal format of a remote controller. 482 is a switch for switching between a battery and an external DC power source, 4
83 is a changeover switch for charging the battery, 484
Is a battery, 485 is a power input terminal for charging the battery, 486 is an external DC power input terminal, 487 is a terminal for outputting temperature data at the time of battery charging, 488 is a ground terminal, 489 is a ground terminal on the camera port side, 490
Is a battery temperature data input terminal on the camera port side, 49
1 is an external DC power supply output terminal, 492 is a battery charging power supply output terminal, 493 is a battery charging current switching switch, 494 and 495 are battery charging current switching resistors, 496 is a battery charging start switch, and 497 is a current detection circuit. Reference numeral 498 is a switching regulator for external DC power supply and battery charging power supply, 499 is a microcomputer for control data analysis transmitted optically, 500 is an output logic level conversion circuit, 501 is an audio signal output driver, 502 is a video signal output driver, and 503 is S. Output terminal, 504
Is a composite signal output terminal, 505 and 506 are audio output terminals, 507 is a synchronized edit signal output terminal, 5
08 is an AV device control signal output terminal, 511 and 512 are
The connector surface 511 is a connector surface for connecting the compact video camera 456 and the station 457.
Is located on the bottom of the compact video camera 456 and the connector surface 512 is located at the station 457.

First, the power supply from the station 457 to the compact video camera 456 will be described.
When the compact video camera 456 is connected to the station 457 at the connector surface 511, the charging / power supply switching terminal 514 switches the switches 482 and 483 to the external and charging sides, and external DC power is supplied from the terminal 491 to the terminal 486. . Also, the terminals 492 to 48
Battery charging power is supplied through 5. At this time, the battery charging power supply is controlled by the switch 496 so as to be supplied after the current detection circuit 497 confirms that the external DC power supply is not used, that is, when the external DC power supply is not used. It When charging the battery, the switch 493 is controlled by the battery terminal voltage and the battery temperature to control the charging current.

Here, as a method of switching the switches 482 and 483, in addition to the above, the compact video camera 456 uses the station 457 and the connector surfaces 511 and 51.
Various methods such as a method of mechanically detecting that the connection has been made in 2 and a method of electrically detecting the connection can be used. Here, a method of mechanical detection will be described.

In FIG. 53, a card remote controller 510 is arranged in the station 457 so that it can be inserted and removed. Further, a part of the function of the card remote controller is embedded in the station 457 as a camera control panel 516, and the remote controller LED 513 receives the light from the remote controller sensor 519 of the compact video camera 456. A power lamp 517 and a charging lamp 518 are also installed in the station 457 as indicators to display the energized state of the station 457 and the charged state of the battery 484. Pin-shaped terminals 489, 490, 491, 492, 514 are planted in the camera fitting portion 509,
An optical connection light receiving window 515 and a remote control LED 513 are provided.

In FIG. 54, when the compact video camera 456 is installed in the camera fitting portion 509 of the station 457, pin terminals 489, 490, 491, 4 are formed.
A compact video camera 456 92 is mechanically connected to terminals 488, 487, 486, 485 in a male and female relationship. The terminal 514 is a changeover switch 482, 483, 5 inside the compact video camera 456.
22 (discussed later) to contact the changeover switches 482, 48
Switch 3,522. The infrared light emitted from the remote controller LED 513 is received by the remote controller sensor 519 inside the compact video camera 456. Station 45
A switching regulator 498 for an external DC power supply and a battery charging power supply is installed inside 7.

In FIG. 55, the infrared light emitting diode (LED) 436 enters the photodiodes 437 and 446 through the optical connection light emission window 520 and the optical connection light incident window 515 on the station 457 side.

The station 457 has a funnel-shaped camera fitting portion 509 on the top. The camera fitting portion 509 has the same shape as the bottom surface of the compact video camera 456, and the compact video camera 456 is attached to the station 45.
Position at 7. This aligns the connector surfaces 511 and 512.

The eighteenth embodiment of the present invention is shown in FIGS.
This will be described using 1.

FIG. 56 shows a primary battery 521 that cannot be charged.
And a rechargeable secondary battery (battery) 484 is shown. Each of the primary battery 521 and the secondary battery (battery) 484 is a set of two packs, and the primary battery 521 is provided with a set of positive and negative primary battery terminals 547 at the upper end thereof.
The secondary battery (battery) 484 is also provided with a pair of positive and negative secondary battery terminals 547 at the upper end thereof. Primary battery 52
1 is lithium manganese dioxide battery, 3V per cell
And the voltage is 6V because they are connected in series.
Is. The secondary battery (battery) 484 is a lithium-ion storage battery, which has a voltage of 3.6 V per unit cell, and has a voltage of 7.2 V because two batteries are connected in series.

FIG. 57 shows a central cross-sectional view of a state where the primary battery 521 is mounted in the battery case 531 in the case 2, and FIG. 58 shows a state of the secondary battery 487 mounted in the battery case 531 in the case 2. A central sectional view is shown. The battery case 531 includes a movable adapter 532, a torsion coil spring 535, support arms 533, 534, a secondary battery lead 545, and a primary battery lead 546. The movable adapter 532 has two support arms 533, 5
34 makes it possible to move inside the battery case 531. One end of the support arm 533 has a battery case 53.
A locking portion 548 protruding from 1 is rotatably supported by a shaft 540, and the other end is rotatably supported by a locking portion 538 protruding from the movable adapter 532 by a shaft 539. Similarly, one end of the support arm 534 is connected to the battery case 531.
A locking portion 549 protruding from the shaft is rotatably supported by a shaft 543, and the other end is rotatably supported by a shaft 542 to a locking portion 541 protruding from the movable adapter 532. One end of the torsion coil spring 535 is axially supported by a locking portion 536 protruding from the battery case 531 by a shaft 537, and the other end is supported by a locking portion 538 protruding from the movable adapter 532.
It is pivotally supported by 39. In FIG. 57, the primary battery 52
When No. 1 is mounted, the other end of the torsion coil spring 535 pivotally supported by the shaft 539 is closer to the inner side of the battery case 531 than the line connecting the shaft 536 and the shaft 540.
On the other hand, in FIG. 58, when the secondary battery 487 is mounted, the torsion coil spring 535 pivotally supported by the shaft 539.
The other end of is closer to the outside of the battery case 531 than the line connecting the shaft 536 and the shaft 540. Support arm 53
Since 3 rotates about the shaft 540, the shaft 539 and the shaft 53
The distance from 6 is shortest when the axis 539 is on the line connecting the axis 536 and the axis 540. That is, the torsion coil spring 53
No. 5 is most flexed when the shaft 539 comes on the line connecting the shaft 536 and the shaft 540, and this state is the dead point, and the rest is the slackened state, that is, the stable point. As a result, the movable adapter 532 has the tip portion 53 of the movable adapter 532.
There is either one of a state for mounting the primary battery in which 2a is in contact with the inner wall of the battery case 531 and a state for mounting in the secondary battery in which the back portion 532b of the movable adapter 532 is in contact with the inner wall of the battery case 531. The movable adapter 532 has a finger-holding portion 544 for resisting the spring force of the torsion coil spring 535 to move the movable adapter 532 from the state for mounting the secondary battery to the state for mounting the primary battery beyond the dead point. It is used when moving inside the battery case 531.

In FIG. 59, the lead terminal 5 for the secondary battery
45, the lead terminal 546 for the primary battery is the battery case 5
It is fixed to 31 and the fixing position is different. The primary battery lead terminal 546 is located closer to the center of the battery case 531 and the secondary battery lead terminal 545 is located closer to the periphery of the battery case 531.

FIG. 60 is a block diagram of this system.
The system comprises a compact video camera 456 and a station 457. Compact video camera 456
Is a load 523 such as a VTR or a video camera, a power switch 524, a battery / external DC power source changeover switch 482, a battery charge changeover switch 483, a primary battery changeover switch 522, and batteries 487, 5
21, battery charging power input terminal 485, external DC
Power input terminal 486, ground terminal 488, charging /
And a power supply switching terminal connection portion 554. The station 457 includes a switching regulator 498 for external DC power supply and battery charging power supply, and a current detection circuit 497.
A battery charging start switch 496, a battery charging current switching resistor 494, 495, a battery charging power source switching switch 493, and a ground terminal 489.
An external DC power supply output terminal 491, a battery charging power supply output terminal 492, and a charging / power supply switching terminal 514.

When the compact video camera 456 is connected to the station 457 with the connector surfaces 511 and 512, the terminals 489 and 488 are connected, the terminals 491 and 486 are connected, the terminals 492 and 485 are connected, and charging is performed. The / power supply switching terminal 514 passes through the charging / power supply switching terminal connection portion 554 to switch the battery / external DC power source switching switch 482 to the external DC power source,
The battery charge changeover switch 483 is changed over to the charging side, and the primary battery changeover switch 522 is changed over to the non-connection side. Further, battery charging power is supplied from the terminal 492 through the terminal 485. At this time, the battery charging power source is controlled by the switch 496 so as to be supplied after confirming that the external DC power source is not used by the current detection circuit 497, that is, when the external DC power source is not used. It When charging the battery, the switch 493 is controlled by the battery terminal voltage to control the charging current.

FIG. 61 is a system block diagram of the compact video camera 456 alone. The block configuration is shown in FIG.
Since the configuration is the same as that described above, the configuration description will be omitted. The battery / external DC power source changeover switch 482 switches to the internal battery, and the battery charge changeover switch 4
83 switches to the non-charging side, and the primary battery changeover switch 522 switches to the primary battery connecting side. Primary battery 52
1 is mounted on the compact video camera 456, the primary battery 521 serves as a power source to drive the load 523, and when the secondary battery 487 is mounted on the compact video camera 456, the secondary battery 487 serves as a power source and load. Move 523.

62 to 68 show a nineteenth embodiment of the present invention.

62, 63 and 64 show the secondary battery 4
Primary battery storage adapter 5 having the same outer shape as 87
25 is shown. 62 is a top view, FIG. 63 is a front view, and FIG.
Shows a central sectional view. The storage adapter 525 is a storage unit 5.
54, two adapter lead terminals 552, and a primary battery detection recess 526. The storage unit 554 stores the primary battery 521. Two adapter lead terminals 552
Has an upper end fixed to the storage adapter 525, and the other end protruding from the two lead window portions 555 opened in the storage adapter 525 to the storage portion 554. Primary battery detection recess 526
Is a recess formed in the storage adapter 525. FIG. 64
Shows the state where the primary battery 521 is stored in the storage portion 554. The primary battery terminal 547 is in contact with the adapter lead terminal 552.

FIG. 65 shows a state in which the primary battery 521 is mounted in the battery case 531 and FIG. 66 shows a state in which the secondary battery 484 is mounted in the battery case 531. A primary battery detection switch 527 and a secondary battery lead 545 are fixed to the battery case 531. In FIG. 65, when the primary battery 521 stored in the storage adapter 525 is mounted in the battery case 531, the adapter lead terminal 552 causes the secondary battery lead 54 to move.
It comes into contact with 5 and becomes energized. On the other hand, the knob 527a of the primary battery detection switch 527 enters the primary battery detection recess 526, and as described later, the primary battery detection switch 52
Turn OFF 7 to disable charging. In FIG. 66, when the secondary battery 487 is mounted in the battery case 531,
The secondary battery terminal 550 comes into contact with the secondary battery lead terminal 545 to be in an energized state. On the other hand, the primary battery detection switch 5
The knob 527a of 27 is pushed in by the secondary battery 487, and as will be described later, the primary battery detection switch 527 is turned on to enable charging.

67 and 68 are system block diagrams of a nineteenth embodiment of the present invention. The system comprises a compact video camera 456 and a station 457. The compact video camera 456 includes a load 523 such as a VTR or a video camera, a power switch 524, a battery / external DC power switch 482, a battery charge switch 483, a primary battery 521, a storage adapter 525, and a primary battery detection. Switch 527,
The battery charging power source input terminal 485, the external DC power source input terminal 486, the ground terminal 488, and the charging / power supply switching terminal connection portion 528 are included. The primary battery detection switch 527 is turned off because the knob 527a is inserted into the primary battery detection recess 526, and the primary battery 521 is not charged. The station 457 includes a switching regulator 498 for external DC power supply and battery charging power supply, a current detection circuit 497, and a battery charging start switch 496.
And a battery charging current switching resistor 494, 495
A battery charging power source switching switch 493, a ground terminal 489, an external DC power source output terminal 491,
It comprises a battery charging power output terminal 492 and a charging / power supply switching terminal 514.

When the compact video camera 456 is connected to the station 457 by the connector surfaces 511 and 512, the terminals 489 and 488 are connected, the terminals 491 and 486 are connected, the terminals 492 and 485 are connected, and charging is performed. The / power supply switching terminal 514 passes through the charging / power supply switching terminal connection portion 528 to switch the battery / external DC power source switching switch 482 to the external DC power source,
The battery charging switch 483 is switched to the charging side. Further, battery charging power is supplied from the terminal 492 through the terminal 485.

FIG. 68 shows a case where a secondary battery 487 is attached to the compact video camera 456. The compact video camera 456 connects the station 457 with the connector surface 51.
1, 512, the terminals 489 and 488 are connected, the terminals 491 and 486 are connected, and the terminal 4
92 is connected to the terminal 485, the charging / power feeding switching terminal 514 passes through the charging / power feeding switching terminal connection portion 528, the battery / external DC power source switching switch 482 is switched to the external DC power source, and the battery charging switching switch 483 is set to the charging side. Switch to. Further, battery charging power is supplied from the terminal 492 through the terminal 485. At this time, the battery charging power source is controlled by the switch 496 so as to be supplied after confirming that the external DC power source is not used by the current detection circuit 497, that is, when the external DC power source is not used. It When charging the battery, the switch 493 is controlled by the battery terminal voltage to control the charging current.

FIG. 69 shows a flowchart of the twentieth embodiment of the present invention, and FIG. 71 shows the timing of pressing the recording switch 4. In the present embodiment, the mode changeover switch 6 for changing over the photographing mode shown in the fourth embodiment of FIG. 11 is not required. That is, a method of switching the shooting mode depending on the timing of pressing the recording switch 4 will be described. First, the compact video camera 1 of the present invention adopts the just mode (short-time shooting mode) as the standard shooting mode.
When the camera power 44 is turned on and the power is turned on, and the recording switch 4 is pressed once, recording starts. Measure the elapsed time and display the countdown in the viewfinder 12,
When the predetermined time (T1) ends, recording is automatically stopped. To shift to the toggle mode, the recording switch 4 is pressed twice within a predetermined time (T1). (You may press the button twice continuously at the start of recording.) A system microcomputer (not shown) detects that the button has been pressed twice within a predetermined time (T1), removes the T1 time limit, and continues recording. The recording switch 4 is pushed (T2 time) to end the recording. Further, in order to shift to the normal mode, the recording switch 4 is kept pressed. Recording switch 4 is turned on (H
During i), the recording is continued with the T1 time limit removed, and the recording switch 4 is turned off (Lo) to end the recording. Although not shown in the drawing, I wanted to extend the shooting by pushing the recording switch once to enter the just mode.
If the button is kept pressed for more than one hour, the recording may be continued while the button is kept pressed. That is, if the recording switch is ON (Hi) at time T1, it is determined that the normal mode is set. Therefore, in this embodiment, it is not possible to take a short image of T1 time or less. However, when shooting with a video camera, shooting for 5 seconds or more is a basic operation for understanding the content, so if T1 time is set to 5 seconds, it may be too short to prevent shooting of unknown content. To be understood.

[0226]

Since the tape winding axis of the VTR mechanism section and the optical axis of the optical system and the optical view finder coincide with each other, the widest area of the VTR section is necessarily held parallel to the photographer's face. And the center of gravity of the VTR should be closest to the photographer. Further, since the VTR mechanism section, which is heavier than the lightweight VTR circuit section, is arranged on the photographer side, the center of gravity of the entire VTR-integrated video camera comes closest to the photographer. Since the rotation moment is the smallest, as a result, stable images with little camera shake can be taken.

Also, since the lens of the video camera and the optical view finder are covered with a shielding plate, and the movement of the shielding plate is interlocked with ON / OFF of the camera power supply, when nothing can be seen through the optical view finder. , It indicates that the power is not turned on, and it is possible to avoid the mistake of starting shooting in the power-off state. In addition, the shield protects the video camera lens and the optical viewfinder, and prevents dust and fingerprints from adhering.

Since the microphone is covered with the slide type shield plate, the microphone itself does not move but only the shield plate moves, so that the number of parts of the movable portion can be reduced. In addition, since there is no part protruding from the case even in the operating state, it can be used safely.

Since a video camera lens with a telephoto magnification of 1 or 3 or less has a short lens barrel, it can be placed on the side of the VTR, and the position of the center of gravity of the video camera lens can be brought close to the photographer to prevent camera shake. Has the effect of

Since the real image type optical finder using two erecting prisms is adopted, the length in the optical axis direction should be shortened by the optical path length from the first reflection to the last reflection in the erecting prism. Since it can be arranged on the side surface of the VTR, the center of gravity of the video camera lens can be brought closer to the photographer and the camera shake is less likely to occur.

In the just mode (short-time photographing mode) which is one of the photographing modes, the photographing time is set on the video camera side. For this reason, the shooting time is not too short to understand the shooting contents, and the shooting time is not too long and too long. Therefore, it is possible to save the trouble of editing after shooting.

Also, just mode (short-time shooting mode)
Is the basic operation, the just mode time (T
Since recording cannot be stopped within 1),
The signal from the recording switch 4 can be sent to the system microcomputer.
You can switch between toggle mode and normal mode.

A primary battery (dry battery) is used as a power source,
It is not necessary to bring a battery charger with a compact video camera because it has an internal format inside the video camera case.

Since the field frame is displayed directly on the liquid crystal display element, the variable field frame can be formed with a simple structure. Further, since electronic zooming can enlarge any part of the image pickup screen, the field frame displayed on the liquid crystal display device can be set to any position and any size in accordance with the zoom image. Further, the liquid crystal field frame can display the zoom amount equivalently even in an optical finder without an optical zoom mechanism by narrowing the field frame to narrow the photographing range.

According to the present invention, the zoom lens can be downsized by using the zoom lens of 3 times as compared with the 6 times zoom lens which has been mainly used conventionally, and the size of the video camera can be reduced. There is an effect that can be.

According to the present invention, a zoom lens having a small zoom ratio of about 2 to 3 can be realized with four lens components, and the field angle at the wide-angle end can be widened to about 60 °, but the size can be greatly reduced. -It is possible to provide a high-performance optical system for a compact video camera that can be reduced in weight.

Since the optical zoom finder is used instead of the electronic view finder, the power consumption of the compact video camera can be reduced.

According to the present invention, a compact zoom lens can be used by using a 3 × zoom lens as compared with a 6 × zoom lens that has been mainly used in the past. Therefore, there is an advantage that the size of the video camera can be substantially reduced.

Further, according to the present invention, even in the electronic zoom which is also used for that purpose (to substantially reduce the size), the deterioration of the image quality due to the use thereof is not a problem in practical use. Therefore, the present invention has an advantage that the video camera can be downsized without impairing the commerciality of the video camera.

[0240] When transmitting video and audio signals from the compact video camera to the camera-integrated VTR interface device (station) by infrared rays, the compact video camera is mounted on the station for use in proximity transmission and the compact video camera is separated from the station. There are two transmission methods of spatial transmission that are used for controlling the operation of the optical signal transmitting means of the compact video camera according to the connection state of the compact video camera and the station. That is, in the case of near field transmission, the DC output of the station can be directly supplied as the power source of the compact video camera, so that the optical signal transmitting means is always operated.
On the other hand, in space transmission, a compact video camera is often driven by a battery, so that the optical signal transmitting means is automatically operated only when a video and audio signal is reproduced from a recording medium in order to minimize battery consumption. . for that reason,
Since the operation is stopped except during the reproduction, when the infrared signal is not required to be transmitted, it is possible to suppress the consumption of the battery as much as possible and to extend the life of the battery.

[0241] Also, when the video is reproduced, the TV and VT are automatically
When adding a control signal for R power control and input mode switching to the infrared signal, in order to prevent malfunction of other devices, the video and Add a control signal to the audio signal. Therefore, in proximity transmission, it is possible to automatically control the power supply of the TV and VTR and switch the input mode, and the usability similar to that of the conventional AV bus cable can be obtained. Further, in the space transmission in which the compact video camera and the station are used separately, only the video and audio signals are transmitted, so that malfunction of other devices can be prevented.

Since the lead terminals on the battery case side are separately provided for the primary battery and the secondary battery, the lead terminals for the primary battery are connected to the load of the VTR integrated type video camera. It is not connected to the output terminal of the charger, and the primary battery is not charged.

Since the primary battery is housed and a storage adapter having the same outer dimensions as that of the secondary battery is formed and the storage adapter is provided with a recess for identifying the primary battery, the recess for identifying the primary battery is provided in the recess. The primary battery detection switch engages and disconnects the charging circuit for the primary battery. Therefore, the primary battery is not charged.

[Brief description of drawings]

FIG. 1 is a perspective view of a configuration of internal parts as seen from the front of a first embodiment of the present invention.

FIG. 2 is a perspective view of the internal component structure as seen from the rear of the first embodiment of the present invention.

FIG. 3 is an external view of the front view of the case covered with FIG.

FIG. 4 is an external view of the case shown in FIG.

FIG. 5 is a perspective view of a second embodiment of the present invention.

FIG. 6 is an operation explanatory diagram of the second embodiment of the present invention.

FIG. 7 is a block diagram of a third embodiment of the present invention.

FIG. 8 is a perspective view for explaining the operation of the third embodiment of the present invention.

FIG. 9 is a perspective view for explaining the operation of the third embodiment of the present invention.

FIG. 10 is a plan view of the third embodiment of the present invention.

FIG. 11 is a plan view of the fourth embodiment of the present invention.

FIG. 12 is an operation flowchart of the fourth embodiment of the present invention.

FIG. 13 is a perspective view of a component structure of a real image type optical finder according to a fifth embodiment of the present invention.

FIG. 14 is a perspective view showing a component structure of a real image type optical finder according to a sixth embodiment of the present invention.

FIG. 15 is a perspective view showing a component structure of a real image type optical finder according to a seventh embodiment of the present invention.

FIG. 16 is a perspective view of a component structure of an Alberta type optical finder according to an eighth embodiment of the present invention.

FIG. 17 is a block circuit diagram of a video camera of the present invention.

FIG. 18 is a schematic diagram of a video signal of the video camera of the present invention.

FIG. 19 is a visual field display state diagram of the optical viewfinder of the present invention.

20 is an explanatory diagram of the operation of FIG.

FIG. 21 is a configuration diagram showing a ninth embodiment of the optical system for a compact video camera of the present invention.

FIG. 22 is a configuration diagram of a zoom lens according to Numerical Example 1 of the present invention.

FIG. 23 is a wide-angle end aberration diagram for Numerical Example 1 of the present invention.

FIG. 24 is a telephoto end aberration diagram of Numerical Example 1 of the present invention.

FIG. 25 is a configuration diagram of a zoom lens showing a tenth embodiment of the present invention.

FIG. 26 is a wide angle end aberration diagram of Numerical Example 2 of the present invention.

FIG. 27 is a telephoto end aberration diagram of Numerical Example 2 of the present invention.

FIG. 28 is a zoom lens configuration diagram showing an eleventh embodiment of the present invention.

FIG. 29 is a wide-angle end aberration diagram of Numerical Example 3 of the present invention.

FIG. 30 is a telephoto end aberration diagram of Numerical Example 3 of the present invention.

FIG. 31 is a lens configuration diagram of an optical zoom finder showing a twelfth embodiment of the present invention.

FIG. 32 is a wide-angle end aberration diagram of Numerical Example 4 of the present invention.

FIG. 33 is an intermediate aberration diagram of Numerical Example 4 of the present invention.

FIG. 34 is a telephoto end aberration diagram of Numerical Example 3 of the present invention.

FIG. 35 is a configuration diagram showing a thirteenth embodiment of the present invention.

FIG. 36 is a graph showing the relationship between the focal length of the zoom lens used in the 13th embodiment of the present invention and the rotation angle of the zoom ring.

FIG. 37 is a graph showing the relationship between the electronic zoom magnification and the rotation angle of the zoom ring used in the thirteenth embodiment of the present invention.

FIG. 38 is a graph showing the relationship between the image size of the video camera and the rotation angle of the zoom ring of the thirteenth embodiment of the present invention.

FIG. 39 is a graph showing the relationship between the horizontal resolution and the electronic zoom magnification of the video camera of the thirteenth embodiment of the present invention.

FIG. 40 is a configuration diagram showing a fourteenth embodiment of the present invention.

FIG. 41 is a configuration diagram showing a fifteenth embodiment of the present invention.

FIG. 42 is a graph showing the relationship between the angle of view of the optical finder used in the fifteenth embodiment of the present invention and the rotation angle of the finder cam.

FIG. 43 is a graph showing the relationship between the value obtained by converting the angle of view of the optical finder used in the fifteenth embodiment of the present invention into the focal length of the zoom lens and the rotation angle of the finder cam.

FIG. 44 is an example of a block diagram of a camera-integrated VTR to which the present invention is applied.

FIG. 45 shows an example of how to use the VTR with camera according to the present invention.

FIG. 46 is another example of the method of using the camera-integrated VTR to which the present invention is applied.

FIG. 47 is an example of a flowchart for explaining the operation of the present invention.

FIG. 48 is another example of the flowchart for explaining the operation of the present invention.

FIG. 49 is an example of a specific circuit configuration of an example of the operation of the system controller.

FIG. 50 is another flowchart for explaining the operation of the sixteenth embodiment of the present invention.

FIG. 51 is a time chart explaining the operation of the sixteenth embodiment of the present invention.

FIG. 52 is a block diagram showing another embodiment of the camera-integrated VTR showing the 17th embodiment of the present invention.

FIG. 53 is an external view showing the use of the seventeenth embodiment of the present invention.

FIG. 54 is a sectional view of the essential parts of the seventeenth embodiment of the present invention.

FIG. 55 is a sectional view of the essential parts of the seventeenth embodiment of the present invention.

FIG. 56 is an external view of a primary battery and a secondary battery (battery).

FIG. 57 is a central cross sectional view of the eighteenth embodiment of the present invention.

FIG. 58 is an operation explanatory view of the 18th embodiment of the present invention.

FIG. 59 is a terminal layout drawing of the eighteenth embodiment of the present invention.

FIG. 60 is a system block diagram of an eighteenth embodiment of the present invention.

FIG. 61 is a system block operation explanatory diagram of the eighteenth embodiment of the present invention.

FIG. 62 is a top view of the nineteenth embodiment of the present invention.

FIG. 63 is a front view of the nineteenth embodiment of the present invention.

64 is a central sectional view of the nineteenth embodiment of the present invention. FIG.

FIG. 65 is an operation explanatory view of the 19th embodiment of the present invention.

FIG. 66 is an operation explanatory view of the 19th embodiment of the present invention.

FIG. 67 is a system block diagram of a nineteenth embodiment of the present invention.

FIG. 68 is an explanatory diagram of system block operations according to the nineteenth embodiment of the present invention.

FIG. 69 is a flow chart diagram of a twentieth embodiment of the present invention.

[FIG. 70] A recording switch ON according to a twentieth embodiment of the present invention.
It is a timing diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Compact video camera, 2 ... Case, 4 ... Recording switch, 5 ... Eject switch, 6 ... Mode switch, 7 ... Zoom switch, 8 ... Opening part, 10 ... Shielding plate, 11 ... Lens, 12 ... Optical view finder,
20 ... VTR mechanism, 22a, 22b ... Tape winding shaft, 27 ... Recording indicator light, 31,44 ... Camera power switch, 33 ... Torsion coil spring, 45, 46 ... Position switch, 47 ... Mode index, 48, 58 ... Objective lens, 5
2, 53 ... Erecting prism, 54 ... Eyepiece lens, 55 ... Transmissive liquid crystal display element, 56, 64 ... Field frame, 57, 66 ...
Countdown display, 62 ... Reflective liquid crystal display element, 74
... Frame generation circuit, 101 ... Optical zoom finder, 102
... zoom lens, 103 ... image sensor, 104 ... camera circuit, 105 ... electronic zoom circuit, 106 ... control circuit A, 1
07 ... Zoom motor, 108 ... Zoom position detector, 25
1 ... Prism A, 252 ... Prism B, 301 ... Zoom lens, 303 ... Image sensor, 304 ... Focus mechanism,
312 ... Electronic zoom circuit, 317 ... Automatic focusing circuit, 31
8 ... Electronic zoom control circuit, 319 ... Camera circuit, 328
… Optical finder, 411… System controller,
429 ... Modulator, 433, 436 ... LED, 432, 4
34 ... Mixer, 456 ... Camera integrated VTR, 457 ...
Camera integrated VTR interface device (station), 482, 483, 522 ... Changeover switch,
511, 512 ... Connector surface, 521 ... Primary battery, 52
3 ... Load, 525 ... Storage adapter, 526 ... Primary battery detection recess, 527 ... Primary battery detection switch, 531 ... Battery case, 532 ... Movable adapter, 535 ... Torsion coil spring, 545 ... Secondary battery lead terminal, 546 ... Lead terminal for primary battery.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical indication location H04N 5/225 F (31) Priority claim number Japanese patent application No. 4-259330 (32) Priority date No. 4 (1992) September 29 (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-268419 (32) Priority Date 4 (1992) October 7 (33) Priority Claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 4-274538 (32) Priority date Hei 4 (1992) October 13 (33) Priority claiming country Japan (JP) (72) Inventor Takita Hiroto, Tokyo 1-280, Higashi Koigakubo, Kokubunji, Tokyo Inside the Hitachi, Ltd. Design Research Center (72) Inventor Hironobu Sato 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture Inside the Hitachi Media Media Research Institute (72) Inventor Minoru Takami 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock company Hitachi Media Media Research Institute (72) Inventor Masahiko Yatsu 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Stock Company Hitachi Video Media Research Institute (72) Inventor Takesuke Maruyama 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Address stock company Hitachi Media Media Research Institute (72) Inventor Kenji Kobayashi 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Address House Hitachi Video Media Research Institute (72) Inventor Shigeyuki Ito Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa 292 Shares Hitachi Video Media Research Institute (72) Inventor Kenji Matsumoto Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa 292 Hitachi Video Media Research Institute (72) Inventor Ayuzawa Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa No. 292 Stock Company, Hitachi, Ltd. Visual Media Research Center

Claims (51)

[Claims] 1. A compact video camera comprising a VTR, a video camera, and a lens or optical system for a video camera with electronic zoom arranged in parallel on a plane, and a video signal, an audio signal, or a control signal. A compact video camera system, comprising: a video camera station connected to the above compact video camera using modulated and mixed light. 2. A video camera, an optical viewfinder which is optically independent of the video camera, a VTR, a battery,
In the VTR-integrated video camera, the video camera and the optical finder are arranged substantially vertically on the same plane, and the widest surface of the VTR is arranged on the plane so as to be in contact with the plane. A compact video camera characterized in that the above battery is arranged in the. 3. A VTR-integrated video camera comprising a video camera having an optical system having a straight optical axis and an image pickup device, and a VTR having a VTR circuit section and a VTR mechanism section. Section drives the VTR mechanism section and performs signal processing, and makes the optical axis of the optical system of the video camera substantially coincide with the axial direction of the tape winding axis of the VTR mechanism section, and the VTR circuit section and the VTR mechanism section. Are arranged in the axial direction of the tape winding shaft, and the optical system is arranged in parallel on the side surface of the VTR circuit section.
A compact video camera characterized in that the image pickup devices are arranged in parallel on the side surface of the VTR mechanism portion. 4. A video camera having an optical system having an optical axis of a straight line and an image pickup device, a VTR having a VTR circuit section and a VTR mechanism section, an optical finder, a battery, and a case. In a VTR-integrated video camera, the VTR circuit section drives the VTR mechanism section and performs signal processing, and winds the optical axis of the optical system of the video camera and the optical axis of the optical viewfinder on the tape of the VTR mechanism section. The VTR circuit portion and the VTR mechanism portion are arranged to overlap each other in the axial direction of the tape, and the optical system is provided on the side surface of the VTR circuit portion in the case. The image pickup devices are arranged in parallel on the side surface of the VTR mechanism section, and the optical finder and the battery are arranged in parallel on the side surface of the VTR. A compact video camera that is characterized. 5. An optical system, an optical view finder, and V
A VTR-integrated video camera including a TR and a case, wherein a second position that opens both the optical system and the optical view finder from a first position that shields both the optical system and the optical view finder A compact video camera having a shield plate that moves to the position of. 6. An optical system, an optical view finder, and V
A VTR-integrated video camera including a TR and a case, wherein a second position that opens both the optical system and the optical view finder from a first position that shields both the optical system and the optical view finder Of the shield plate and a power switch interlocking with the shield plate. When the shield plate is in the first position, the power switch is turned off, and the shield plate is in the second position. A compact video camera characterized in that the power switch is turned on at certain times. 7. An optical system, an optical view finder, and V
A VTR-integrated video camera including a TR, a microphone, and a case, comprising: the optical system, the optical view finder, and the optical system and the optical view finder from a first position that shields the microphone. A compact video camera characterized in that a shielding plate is provided which moves to a second position where the microphone is opened. 8. An optical system, an optical view finder, and V
A VTR-integrated video camera including a TR, a microphone, and a case, comprising: the optical system, the optical view finder, and the optical system and the optical view finder from a first position that shields the microphone. A shield plate that moves to a second position where the microphone is opened, and a power switch interlocking with the shield plate is provided in the case, and the shield plate is the first
The compact video camera is characterized in that the power switch is turned off when it is in the position, and the power switch is turned on when the shielding plate is in the second position. 9. The optical system is an optical lens having a telephoto magnification of 1 × or 3 × or less.
The compact video camera described in 7 or 8. 10. A VTR-integrated video camera comprising a video camera having an optical system and an image pickup device, an optical finder, a VTR and a battery, wherein the optical system is a telephoto lens having a predetermined magnification, The video camera has a function of electronically magnifying an image picked up through the optical system, the optical finder is a telephoto finder having a telephoto magnification higher than that of the optical system, and the image picked up through the optical system is electronically A compact video camera, characterized by expanding to, and correcting the difference between the telephoto magnification of the optical system and the telephoto magnification of the optical viewfinder. 11. A VTR integrated video camera comprising a video camera having an optical system and an image pickup device, an optical finder, a VTR and a battery, wherein the optical system is an optical system with a telephoto magnification of 1, The video camera has a function of electronically magnifying an image picked up through the optical system, the optical finder is a telephoto finder having a predetermined magnification, and the optical finder according to the electronic magnification of the video camera. A compact video camera featuring the telescopic magnification of an optical viewfinder. 12. The optical finder is a real image type optical finder having an erecting prism, and the optical finder is a real image type optical finder.
Compact video camera described in. 13. The battery according to claim 2, 4, 10 or 11, wherein the battery is a dry cell, and the battery is mounted in the case such that the battery can be inserted into or removed from the case. Compact video camera described. 14. An optical view finder of a video camera, wherein the video camera has a digital image signal processing function of an image, and the optical view finder comprises a liquid crystal display element forming a field frame, and the digital signal processing function. An optical view finder for a video camera, characterized in that the size of the field frame is changed according to the rate of change of the size of the image. 15. The optical view finder is a real image type optical view finder comprising an objective lens, a transmissive liquid crystal display element placed at the focal point of the objective lens, and an eyepiece lens. 15. The optical viewfinder of a video camera according to claim 14, wherein the field frame is formed by a transmissive liquid crystal display device. 16. The optical view finder comprises an objective concave lens having a semi-transmissive concave mirror on the back surface thereof, and a liquid crystal display element having a reflecting mirror having a viewing window formed at the center thereof. The optical view finder of a video camera according to claim 14, wherein the optical view finder is an Arbata optical view finder having a structure in which reflected light is reflected on the concave mirror. 17. A VTR integrated camera comprising a VTR, a video camera and a recording switch, wherein the recording switch generates a signal to start or end recording of the VTR, and when the recording switch is pressed, recording is started. And the VT
A compact video camera characterized by automatically stopping recording after a fixed time set in the R-integrated camera. 18. The compact video camera according to claim 17, wherein a countdown display for the certain period of time is displayed in the viewfinder. 19. The compact video camera according to claim 17, wherein the countdown display is a numeral. 20. The compact video camera according to claim 17, wherein the countdown display is a scale display. 21. An indicator lamp is provided near the finder,
18. The compact video camera according to claim 17, wherein the recording is being performed for the predetermined time by blinking the indicator light. 22. The compact video camera according to claim 20, wherein the countdown display and the blinking of the indicator lamp are in units of 1 sec. 23. The fixed time of the photographing is 5 sec to 10 sec.
17. The method according to claim 17, 18, 19, 20, 21 or 22
Compact video camera described in. 24. An optical system for a compact video camera, comprising: a lens means and an optical finder means having a magnification substantially equal to that of a video camera consisting of an electric magnification varying means. 25. The zoom ratio N of the optical zoom finder means
1 is approximately N1 = N2 × N, where N2 is the zoom ratio of the zoom lens means and N3 is the zoom ratio of the electronic zoom means.
3. An optical system for a compact video camera, characterized in that 26. The focus lens of the zoom lens means comprises a focus mechanism that moves in two steps of infinity and close-up, a focus actuator that drives the focus mechanism, an autofocus determination circuit, and a control circuit. The optical system for a compact video camera according to claim 25. 27. The zoom lens means comprises, in order from the object side, a first lens group having a negative refracting power and a second lens group having a positive refracting power, and in zooming from a wide angle to a telephoto, the second lens group is used. 26. The optical system for a compact video camera according to claim 25, wherein the first lens group moves so as to prevent the movement of the image plane position during zooming as the lens group moves toward the object side. . 28. The optical system for a compact video camera according to claim 27, wherein each of the first lens group and the second lens group is provided with at least one aspherical surface. 29. The first lens group comprises, in order from the object side, a negative meniscus lens (203) having a convex surface directed toward the object side and a positive biconvex lens (204), and an image of the biconvex lens (204). The optical system for a compact video camera according to claim 27, wherein an aspherical surface is provided on the surface on the surface side. 30. An image of the meniscus lens (203), wherein the first lens group comprises, in order from the object side, a negative meniscus lens (203) having a convex surface directed toward the object side and a positive biconvex lens (204). Surface and the biconvex lens (2
28. The optical system for a compact video camera according to claim 27, wherein an aspherical surface is provided on each of the image side surfaces of 04). 31. The second lens group comprises, in order from the object side, a negative meniscus lens (205) having a convex surface facing the object side and a positive biconvex lens (206), and both sides of the meniscus lens (206). The optical system for a compact video camera according to claim 27, wherein an aspherical surface is provided on the surface. 32. The second lens group comprises, in order from the object side, a cemented lens of a negative meniscus lens (205) having a convex surface facing the object side and a positive biconvex lens (206), and the meniscus lens ( The optical system for a compact video camera according to claim 27, wherein an aspherical surface is provided on each of the object-side surface of 205) and the image-side surface of the biconvex lens (206). 33. The optical zoom finder means comprises, in order from the object side, an objective lens group, a field frame and an eyepiece lens group which perform a zooming action, and prisms A and B are provided in front of and behind the field frame, respectively. The optical system for a compact video camera according to claim 25, wherein an aspherical surface is provided in each of the objective lens group and the eyepiece lens group. 34. The objective lens group of the optical zoom finder means comprises, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a negative refractive power. And a fourth lens group having a positive refracting power, the second lens group moves to the field frame side at the time of zooming from a wide angle to a telephoto, and the objective lens group at the time of zooming is formed. 26. The optical system for a compact video camera according to claim 25, wherein the third lens group moves so as to prevent the movement of the image plane position. 35. At least two sets of lenses are arranged at a distance from each other, and the zoom operation is performed by relatively moving the lenses of each set along the optical axis direction to adjust the above-mentioned intervals. A zoom lens system capable of varying a focal length, an image sensor including a planar sensor that receives an image of a subject that has passed through the zoom lens system and converts the image into an electric signal, and the above-mentioned plane that constitutes the image sensor. In a video camera lens that consists of an electronic zoom system that makes the magnification of the subject image variable by changing the planar range of the output of the conventional sensor, a part of the desired subject magnification can be adjusted. By providing the zoom lens system and the remaining part of the electronic zoom system, a desired object magnification can be achieved in both zoom systems. Electronic zoom with a video camera lens that. 36. The desired subject magnification is 6 times, of which 3 times is provided to the zoom lens system and the remaining 2 times is provided to the electronic zoom system, and as a result, the electronic zoom is provided. In the system, the planar range of the planar sensor that constitutes the image sensor is continuously extracted from the initial rectangular range of the diagonal length l to the rectangular range of the diagonal length (0.5 × l). 36. The lens for a video camera with an electronic zoom according to claim 35, which is variable. 37. When the limit of the zoom operation in the zoom lens system is reached, subsequently, in a continuous form, continuously changing the planar range of the sensor in the electronic zoom system is performed as the electronic zoom operation. The lens for a video camera with an electronic zoom according to claim 36. 38. A visual inspection of a subject image at a magnification corresponding to the zoom operation while interlocking with the zoom operation in the zoom lens system and the electronic zoom operation in the electronic zoom system after the limit is reached. 38. The lens for a video camera with an electronic zoom according to claim 37, further comprising an optical finder formed of an optical lens that enables observation with the electronic zoom. 39. The variable magnification continuously according to claim 38, wherein the optical finder is interlocked with a zoom operation accompanied by a transition from the optical zoom to the electronic zoom or from the electronic zoom to the optical zoom. Lens for video camera with electronic zoom described. 40. A magnetic recording / reproducing apparatus for recording and reproducing a video signal and an audio signal on a magnetic recording medium, a modulating means for modulating the video signal and the audio signal, and a mixing means for frequency-multiplexing the modulated signal. The optical signal transmitting means includes two optical signal transmitting means having a driving means for converting an output signal from the mixing means into a light emitting element drive signal and a light emitting means for converting the light emitting element drive signal into an optical signal. Having a control means for controlling the operation,
When the magnetic recording / reproducing apparatus is used in contact with the optical signal receiving means by the control means, only the first optical signal transmitting means is operated, and the magnetic recording / reproducing apparatus is operated for the optical signal. A compact video camera system characterized in that, when used separately from the receiving means, only the second optical signal transmitting means is operated. 41. The first optical signal transmitting means is always operated by the control means when the magnetic recording / reproducing apparatus is used in contact with the optical signal receiving means. The compact video camera system described in. 42. When the magnetic recording / reproducing apparatus is used separately from the optical signal receiving means, the control means controls
The compact video camera system according to claim 40, wherein the second optical signal transmitting means is operated only when a video signal and an audio signal are reproduced from the recording medium. 43. The control means outputs the optical signal transmitted from the first optical signal transmission means only when the magnetic recording / reproducing apparatus is used in contact with the optical signal reception means by the mixing means. The compact video camera system according to claim 40, further comprising a control signal. 44. A magnetic recording / reproducing apparatus for recording / reproducing a video signal and an audio signal on a magnetic recording medium, a modulating means for modulating the video signal and the audio signal, and a mixing means for frequency-multiplexing the modulated signal. A power supply to the magnetic recording / reproducing apparatus is provided, which comprises an optical signal transmitting means having a driving means for converting an output signal from the mixing means into a light emitting element driving signal and a light emitting means for converting the light emitting element driving signal into an optical signal. When the magnetic recording / reproducing apparatus is used in contact with the optical signal receiving means by the controlling means for controlling the supply, the DC voltage output generated by the receiving means is used for the magnetic signal reproduction. When the magnetic recording / reproducing apparatus is used as a power source and is used separately from the optical signal receiving means, the magnetic recording / reproducing apparatus is driven by a battery attached to the magnetic recording / reproducing apparatus. Compact video camera system, characterized in that to. 45. A VTR comprising a video camera and a VTR
Compact video camera system, characterized in that, in an integrated video camera and a video camera station on which the video camera is mounted, signals are exchanged between the video camera station and the VTR integrated video camera by modulated light. . 46. A VTR comprising a video camera and a VTR
A compact video camera system characterized in that, in an integrated video camera and a video camera station on which the video camera is mounted, the upper surface of the video camera station is recessed in conformity with the bottom shape of the VTR integrated video camera. 47. A VTR integrated type video camera comprising a video camera, a VTR, a battery and a battery case accommodating the battery, wherein charging of the primary battery is prevented by utilizing the difference in shape between the primary battery and the secondary battery. A compact video camera characterized by this. 48. The compact video camera according to claim 47, wherein a primary battery terminal and a secondary battery terminal are provided in the battery case to prevent charging of the primary battery. 49. A movable adapter for a primary battery in the battery case, and one end which is locked to the movable adapter and the other end of which is locked to the battery case so that a central coil portion is freely movable. 49. Compact video according to claim 47 or 48, characterized in that a spring is provided and the movable adapter is selectively positioned in a first position for a primary battery and a second position for a secondary battery. camera. 50. A primary battery detection switch provided in the battery case and a primary battery storage adapter formed in the shape of a secondary battery prevent charging of the primary battery. Compact video camera described in. 51. A VTR-integrated camera comprising a VTR, a video camera and a recording switch, wherein the recording switch generates a signal to start or end recording of the VTR, and when the recording switch is pressed, recording is started. , The recording is automatically stopped after a fixed time set in the VTR integrated camera, or if a plurality of recording switches are pressed within the fixed time, the recording is started and the recording is continued beyond the fixed time, Press the recording switch again to stop recording, or press the recording switch to start recording. Continue pressing the recording switch for a certain period of time to continue recording, and release the recording switch to stop recording. A compact video camera characterized by this.