JPH0731353B2 - Video camera with still camera - Google Patents

Description

TECHNICAL FIELD The present invention relates to a video camera with a still camera, and more particularly to a movie video camera equipped with a still camera using, for example, a silver halide photographic film.

2. Description of the Related Art There has been a demand for recording a specific scene in a still picture while shooting with a television camera having a video tape recording function, that is, a video camera. conventionally,
For example, if I carry both a silver salt still camera and a video camera and there is a scene that I want to shoot while shooting with the video camera, I stopped shooting with the video camera and shot with the still camera. In such a situation, it is necessary to carry two devices around, and it is necessary to interrupt shooting with a video camera, and there is a risk of missing important shooting chasses. There was a problem.

Therefore, in order to solve such a problem, the still camera and the video camera are combined into one device, and the still camera is operated to operate the still camera without interrupting the shooting with the video camera. A video camera would be required. Such a video camera with a still camera needs to operate both still and movie functions at the same time. Therefore, the operability must be good and the so-called "back-up operation" must be realized.

In particular, it is required that the viewfinder for determining the object scene is common to the still camera section and the video camera section. In general, shooting a still image requires a viewfinder with a relatively wide angle due to the inherent property of shooting a still image. On the other hand, shooting a moving image requires a viewfinder with a relatively narrow angle due to the nature of shooting a moving image. The viewfinder common to the still camera section and the video camera section must satisfy both requirements.

In view of the above demands, an object of the present invention is to provide a video camera with a still camera equipped with a viewfinder suitable for simultaneous shooting of moving images and still images.

DISCLOSURE OF THE INVENTION A video camera with a still camera according to the present invention is directed to the same field as a video camera unit that images a scene and records the moving image on a video tape, and captures the scene. It has a still camera section for recording a still image and a viewfinder which is directed to the same field and is commonly used for imaging by the video camera section and the still camera section,
The viewfinder has a field of view including at least the field of view captured by the still camera unit, and visually displays a first display indicating the angle of view of the field of view captured by the video camera unit inside the field of view. It includes a display means.

In this specification, the term “video camera with a still camera” means one of a still camera unit and a video camera unit.
Built in one housing, both mounted in independent housings, both housings are separable when mounted in independent housings, or if they are separable Regardless of whether or not it can be used alone, it is to be broadly construed to include a photographing device having both a still camera function and a video camera function.

Description of Embodiments Embodiments of a video camera with a still camera according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 5, there is shown an embodiment in which the present invention is applied to a so-called 8 mm video camera, which basically comprises a video camera unit 10 and a still camera unit 30.
The video camera unit 10 is a movie video camera which uses a video tape having a tape width of 8 mm as a video recording medium, images a field, and records the moving image in the form of a video signal on the video tape. A still camera unit 30 is placed on top of the still camera unit, and the object scene placed by the still camera unit 30 is suitable for the same object scene imaged by the video camera unit 10.

In the present embodiment, the still camera unit 30 is a so-called 110 type silver salt still camera, uses a 110 type cartridge film as a video recording medium, and records its still image as a latent image on the silver salt film. It also includes a wide range of autofocus methods, including fixed focus, automatic exposure adjustment, and / or
It may have an automatic film loading and winding function.

The video camera unit 10 has a main body 11 having a rectangular parallelepiped shape as a whole as shown in the figure, and an imaging optical system 14 and a microphone 16 are arranged on the front surface of the main body 11. The main body 11 is a storage part
It has 12 to which an 8 mm video tape cassette is detachably mounted. Video signal captured by the imaging optical system 14,
Also, the sound of the shooting site captured by the microphone 16 is recorded on the video tape of the storage unit 12. Video camera section 10
A handgrip 18 is attached to the side surface of the main body 11.

The still camera unit 39 also has a main body 31 which is also in the shape of a rectangular parallelepiped as a whole, and is mounted on the upper surface of the main body 11 with its longitudinal direction being orthogonal to the longitudinal direction of the main body 11, as shown in the figure. A 110 type film cartridge is detachably loaded inside the main body 31. The imaging optical system 32 is on the front of the main body 31.
Is provided, and the subject image captured by this is recorded on this cartridge film. The still camera unit 30 may be detachably attached to the video camera unit 10 or may be fixedly attached.

As shown in the figure, the still camera unit 30 is arranged such that a part of the main body 31 having a rectangular parallelepiped shape in the longitudinal direction protrudes from the side surface of the main body 11 of the video camera unit 10, and the projection 34 has an optical view. A finder 36 is provided. Finder 36
The objective lens unit 100 is arranged on the front surface of the main body 31, and the eyepiece lens unit 102 is arranged on the rear surface thereof. The viewfinder 36 includes a video camera unit 10 and a still camera unit 30.
It is suitable for the same scene that is imaged in. by this,
When shooting with this device, viewfinder 3 from the direction of arrow 103
By looking into 6, the operator can see the scene.

The optical viewfinder 36 has an objective lens section 100 and an eyepiece lens section 102 held by a lens barrel 104, as shown in the sectional view of FIG. In the present embodiment, the finder 36 has a viewing angle slightly wider than the field area in which the still camera unit 30 can shoot one frame of film. This viewing angle is shown by a frame 110 in FIG.

In the finder 36, the reticle 106 is disposed between the objective lens unit 100 and the eyepiece lens unit 102 as shown. As shown in FIG. 1, the reticle 106 is provided with two types of bright frames 112 and 114 at four locations by vapor deposition or the like. One bright frame 112 is a display for displaying the angle of view of one frame imaged on the silver salt film by the still camera unit 30, and the other bright frame 114.
Is a display for displaying the angle of view of one frame captured by the video camera unit 10 on the video tape.

As can be seen from FIG. 1, in this embodiment, the bright frame 112 that displays the angle of view of the still camera is displayed slightly inside the area 110 of the entire field of view, and the bright frame 114 that displays the angle of view of the video camera is , Is displayed further inside than the area designated by the bright frame 112. As described above, the entire field of view is set wider than the still shooting angle of view so that the pattern in which the subject plunges into the aimed angle of view can be observed in the entire field of view of the viewfinder. In addition, the video shooting angle of view is set to be narrower than the still shooting angle of view because, in general, a relatively wide angle of view is required for shooting still images and a relative angle is used for shooting moving images. This is because a narrow angle of view is required.

Further, as shown in FIG. 2, the area of the entire visual field 110 may be set to the angle of view for still shooting, and four bright frames 114 having the angle of view for video shooting may be provided inside thereof. In this case, the field of view included in the entire field of view 110 of the viewfinder 36 is a region captured by the still camera unit 30, and the field of view defined by the bright frame 114 is captured by the video camera unit 10. Is shown.

Referring to FIG. 6, there is shown another embodiment of the present invention, which basically comprises a video camera unit 50 and a still camera unit 70. The video camera unit 50 is a movie video camera which uses an 8 mm video tape 422 (FIG. 7), images a field, and records the moving image on the video tape 422 in the form of an imaging signal. The video camera unit 50 has a main body 51 having a rectangular parallelepiped shape as a whole, as shown in the figure,
A still camera unit 70 is arranged below the front surface of the main body 51. In the present embodiment, the still camera unit 70 is a so-called 13
It is a 5 type silver salt still camera, 35mm silver salt film 531
(Fig. 8) is used as a video recording medium.

The video camera unit 50 has a main body 51 having a rectangular parallelepiped shape as a whole as shown in the figure, and an imaging optical system 52 is arranged on the front surface of the main body 51. The main body 51 has a storage portion 54 in which an 8 mm video tape cassette is detachably mounted. The video signal captured by the imaging optical system 52 is recorded on the video tape 422 of the storage section 54. A handgrip 56 is attached to the lower surface of the main body 51 of the video camera unit 50. The internal configuration of the video camera unit 50 will be described later in detail.

The still camera unit 70 also has a main body 71 which is also in the shape of a rectangular parallelepiped as a whole, and is mounted on the front surface of the main body 51 in an orientation in which its flat front surface is aligned with the front surface in the longitudinal direction of the main body 51 as shown in the figure. . Inside the main body 71, the 135 type roll film 5
31 is detachably loaded. An image pickup optical system 72 is arranged on the front surface of the main body 71, and a subject image picked up by the image pickup optical system 72 is recorded on the roll film 531. The image pickup optical system 72 of the still camera unit 70 is a video camera unit whose object scene is imaged by this.
It is oriented in the same direction as the scene imaged at 10.

The still camera unit 70 may be detachably attached to the video camera unit 50 or may be fixedly attached.
As shown in the figure, a projecting portion 76 projects from the side surface of the main body 71 of the rectangular parallelepiped, and a strobe mechanism for still photography is housed therein, and a stroboscopic light emission opening 78 is provided on the front surface thereof.

The still camera unit 70 also has automatic focusing (AF) in this embodiment.
A distance measuring sensor mechanism 74 having a function is provided on the front surface of the main body 71. Of course, this distance measuring sensor mechanism 74 is
It is also advantageously used for the automatic focusing function of the video camera unit 50. The still camera unit 70 may also have an automatic exposure adjustment (EE) function and / or an automatic film loading and winding function. The internal configuration of the still camera unit 70 will be described later in detail.

An optical viewfinder 58 is provided on the main body 51 of the video camera unit 50 so as to project from the side surface thereof as shown in the figure. As can be seen from FIG. 4, the finder 58 is
It has a slightly more complicated configuration than the finder 36 used in the illustrated embodiment. This is because the former lens barrel 104a is considerably longer than the latter.

In the viewfinder 58, the body lens unit 100 is arranged in front of the main body 51, and the eyepiece lens unit 102 is arranged behind it. The viewfinder 58 is suitable for the same object scene captured by the video camera unit 50 and the still camera unit 70. This allows the operator to see the field by looking through the finder 58 from the direction of the arrow 103 when taking an image with the present invention.

The viewfinder 58 has an objective lens unit 10 as shown in FIG.
A reticle 106 is arranged between 0 and the eyepiece lens unit 102. The reticle 106 may be the same as the finder 36 shown in FIG. In the case of the present embodiment, the still camera unit 70 has an automatic focusing function, and the reticle 106 is provided with the automatic focusing control bright frame 116 by vapor deposition or the like. The bright frame 116 is a bright frame for indicating a target to be measured by the distance measuring sensor mechanism 74 in the viewfinder visual field 110, and is arranged in the central portion of the entire visual field area 110 in the form of a symbol () in this embodiment. I'm standing. Of course, if the still camera unit 70 does not have the automatic focusing function, the frame 116 may not be provided.

Also in this embodiment, the area of the entire visual field 110 as shown in FIG. 2 is set to the angle of view for still shooting, and four bright frames 114 having the angle of view for video shooting are arranged inside the area. A reticle without the frame 112 may be used.

Referring to FIG. 7, there is shown an example of the internal configuration of the video camera unit 50 in the embodiment shown in FIG. The imaging optical system 52 of the video camera unit 50 has a master lens 405,
Behind the master lens 405, a CCD (charge coupled device) 406 that converts an optical image of a subject captured by the master lens 405 from an optical signal into a video signal is arranged. CC
The video signal obtained by D406 is sent to the video signal system circuit.

As shown in the figure, the video signal system circuit includes an amplifier 407 that amplifies the video signal from the CCD 406 and a pre-emphasis circuit that emphasizes the high frequency components of the signal sent from the amplifier 407.
408, a clamp circuit 409 for fixing the signal obtained from the pre-emphasis circuit 408 to a predetermined level, an FM modulator 410 for exchanging the video signal output from the clamp circuit 409 for a recording signal to be recorded on the video tape 422, A high-pass filter (HPF) 411 that removes the frequency band of the audio signal described below from the output signal of the FM modulator 410, and a mixing that multiplexes the audio signal from the band-pass filter (BPF) 419 to the output signal from the HPF 411. It is composed of a container 412. As the pre-emphasis circuit 408 and the clamp circuit 409, those used in the recording circuit of the conventional video tape recorder are advantageously used.

A microphone 413 is also attached to the video camera unit 50, and the sound captured by the microphone 413 is converted into an audio signal by the microcapsule 414. The audio signal from the microcapsule 414 is sent to the audio signal recording system circuit.

The audio signal recording system circuit has an amplifier 415 for amplifying the audio signal from the microcapsule 414, as shown in FIG. The output from the amplifier 415 is an automatic gain control (AGC) circuit.
Input to 417. The AGC circuit 417 automatically adjusts the input level of the audio signal when the input level is not a predetermined value. The output from the AGC circuit 417 is input to the FM modulator 418.

The FM modulator 418 converts the audio signal from the AGC circuit 417 into a recording signal to be recorded on the video tape 422. A BPF (Band Pass Filter) 419 passes only signals other than the band of the frequency-modulated video signal in the modulated audio signal from the FM converter 418.

The recorded signals of these video and audio signals are mixed by a mixer.
412 is mixed and sent to the magnetic heads 421a and 421b having different azimuth angles from each other via the recording amplifier 420,
It is recorded on the video tape 422 by the magnetic heads 421a and 421b. Video tape 422 is a tape drive circuit 423
It is pinched by a capstan 424 and a pinch roller 425 driven by the motor and travels in a predetermined direction.

Further, as shown by a dotted line 450, the signal from the amplifier 407 is also input to the processing circuit 451 for electronic viewfinder (EVF), processed by the processing circuit 451 and then input to the CRT 452. Good. On the screen 456 of the CRT 452, a subject image represented by the video signal received from the EVF processing circuit 451 is displayed. The operator views the CRT screen 45 through the eyepiece 453.
You can see 6 display images. This constitutes the electronic viewfinder 454.

This electronic viewfinder 454 has a video camera unit 50
The object scene photographed by the image pickup optical system 52 is displayed. The field shot by the still camera unit 70 usually has a wider field of view. However, since the field of view displayed on the viewfinder 454 is included in the central portion of such a wide field of view, it is possible to use the electronic viewfinder 454 as a viewfinder for the still-smeller section 70. it can. A reticle 458 on which the bright frame for distance measurement 116 is displayed may be arranged in front of the CRT screen 456. When providing such an electronic viewfinder 454, it is not necessary to provide the optical viewfinder as shown in FIG. 4 as a matter of course.

The video camera system control 426 is a control circuit that controls each part of the video camera unit 50, and controls the tape drive circuit 423 in response to the operation of the recording / stop (REC) button 427, for example, and supplies the video tape 422. Control delivery.

Referring to FIG. 8, the optical system 72 of the still camera unit 70 has a master lens 528. Behind the master lens 528, the optical path 5 from the subject incident from the master lens 528
Roll film through diaphragm 536 and shutter 530 to 29
531 is placed.

The roll film 531 is fed by the sprocket 538, and the sprocket 538 is the film winding drive circuit 5
The driving force is received from the motor 543 driven by 39.

The still camera system controller 541 is a control circuit that controls each unit of the still camera unit 70. For example, in response to the operation of the shutter release button 542, the film winding drive circuit 539, the exposure control unit 540, and the lens moving mechanism.
It controls the 544 and the flash control unit 556. The shutter release button 542 is for recording and
It is located very close to the stop button 427 and both are located near the handgrip 56.

The still camera unit 70 is provided with an AF sensor 74 and an EE sensor 558. The AF sensor 74 measures the distance between the device and the subject, and the EE sensor 558 measures the brightness of the field, and outputs the measured data to the still camera system controller 541.

System controller 541 for still camera is AF sensor 74
The lens moving mechanism 544 is controlled according to the distance data between the device and the object input from the lens moving mechanism 544, and the lens moving mechanism 544 adjusts the focus of the master lens 528.

Further, the still camera system controller 541 controls the exposure control unit 540 and the strobe control unit 556 according to the brightness data of the object field input from the EE sensor 558. The exposure control unit 540 thereby adjusts the diaphragm 536 and controls the opening time of the shutter 530. The strobe control unit 556 controls the light emission of the strobe 555.

The structure of the still camera unit 70 and the video camera unit 50 in the embodiment shown in FIG. 6 has been described above with reference to FIGS. 7 and 8, but the still camera unit in the embodiment shown in FIG. The internal configurations of 30 and the bided camera unit 10 may be similar to this.

As described above, in the embodiment of the present invention, the optical viewfinder 36 or 58 of the video camera with a still camera is shared by the still camera unit 30 or 70 and the video camera unit 10 or 50, and the viewfinder field 110 has a still camera angle of view. Both the angle of view for the video camera is set. The still camera view angle is indicated by the full field of view 110 or the bright frame 112 of the viewfinder 36 or 58, and the video camera view angle is displayed by the bright frame 114. Therefore, looking at this viewfinder 36 or 58, take a video with the video camera unit 10 or 50, and take a still camera unit 30 or 70.
It is possible to perform shooting of still images at the same time and without any hindrance to each other. When the still camera unit 30 or 70 or the video camera unit 10 or 50 has an automatic focusing function, the bright frame 11 for automatic focusing control displayed in the field of view of the viewfinder 36 or 58.
By 6, it is possible to capture an accurate range-finding target.

Although the optical finder is used as the viewfinder in the embodiment described with reference to FIGS. 5 and 6, the present invention is not limited to this, and the circuit example of FIG. 7 was touched. It goes without saying that it is effectively applied to such an electronic finder. Further, although the still camera section uses a silver salt film, it may be an instant still picture method or an electronic still camera method for recording a video signal on a magnetic disk.

Furthermore, in each of the above-described embodiments, the still camera units 30 and 70 are mounted in separate housings from the video camera units 10 and 50, respectively. However, the present invention is not limited to such a method of mounting the camera function part in the housing. For example, it goes without saying that the still camera section and the video camera section are effectively applied to a single housing type in which a still housing is incorporated in a single housing.

Effect As described above, according to the present invention, the viewfinder of the video camera with a still camera is shared by the still camera unit and the video camera unit. Both the angle of view for still cameras and the angle of view for video cameras are set in the viewfinder. Therefore, it is possible to perform simultaneous shooting of a moving image and a still image without any trouble by looking into the viewfinder.

[Brief description of drawings]

1 to 3 are explanatory views showing an example of a field of view of a field formed by the optical viewfinder in the embodiment of the present invention shown in FIG. 5 or 6, and FIG. FIG. 5 is a side sectional view showing a configuration example of an optical viewfinder in the embodiment shown in FIG. 5, FIG. 5 is a perspective view showing an embodiment in which the present invention is applied to a so-called 8 mm video camera, and FIG. FIG. 7 is a perspective view similar to FIG. 5 showing an embodiment, FIG. 7 is a functional block diagram showing an internal configuration example of a video camera unit in the embodiment shown in FIG. 6, and FIG. 8 is an embodiment shown in FIG. FIG. 9 is a functional block diagram showing an example of the internal configuration of the still camera portion in FIG. 9, and FIG. 9 is a side sectional view similar to FIG. 4 showing an example of the configuration of the optical viewfinder in the embodiment shown in FIG. Explanation of symbols for main parts 10,50 …… Video camera section 30,70 …… Still camera section 36,58 …… Optical viewfinder 106 …… Reticle 112,116 …… Bright frame

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Kaneko 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation (56) References JP 61-97639 (JP, A) 61-65435 (JP, U)

Claims (2)

[Claims] 1. A video camera unit for picking up an object scene and recording a moving image on a video tape, and a still camera directed to the object scene for picking up the object scene and recording a still image thereof. And a viewfinder directed to the field of view and commonly used for imaging by the video camera section and the still camera section, the field of view of the viewfinder being captured by the still camera section. A display unit is provided which is wider than the field of view and has a first vertical width and a first horizontal width captured by the video camera unit, the first display indicating the angle of view of the field of view being visible inside the field of view. The display means visually displays a second display indicating the angle of view of the field captured by the still camera unit in the field of view, and the angle of view of the second display is the first display. With a still camera characterized by being wider than the vertical and horizontal widths of 1. Video camera. 2. The video camera with a still camera according to claim 1, wherein the video camera with a still camera has a distance measuring means for measuring a distance to a predetermined target position in the area of the object scene. A video camera with a still camera, wherein the display means visually displays a third display indicating the predetermined target position in the visual field.