JP2001078071A - Silver salt camera with electronic image pickup function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a silver salt camera having an electronic image pickup function which efficiently uses a circuit layout space and is free from degradation of signal characteristics or malfunction due to noise at the time of mounting a driving control electric circuit of silver salt photographing and that of electronic image pickup on one camera body. SOLUTION: This silver salt camera is provided with a camera body unit 10 incorporating the driving control part of a silver salt photographing optical system, a pop-up unit 12 which is popped up from the camera body unit 10, and a rear unit 17 provided in the rear part of the camera body. In this case, an image pickup part 27 which generates digital picture data of a subject image, an image pickup control part 22 which performs compression and picture correction processing of digital picture data generated by the image pickup part 27, and a picture display part 28 which displays a picture on the basis of digital picture data processed by the image pickup control part 22 are provided, and this silver salt camera with electronic image pickup function has the image pickup part 27, the image pickup control part 22, and the picture display part 28 arranged in the pop-up unit 12, the camera body 10, and the rear unit 17 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has both functions of an electronic image pickup device having an electronic image pickup device for converting a subject image into an electric signal, and a silver halide photographing device for photographing the subject image on a silver halide film. , A silver halide photography and an electronic imaging camera.

[0002]

2. Description of the Related Art In a silver halide camera that exposes a subject image to a silver halide film, it is impossible to determine if an image photographed on the film is projected as intended by the photographer without developing the film. Sometimes it is generally impossible to predict the outcome. In order to solve this, an image of a subject is exposed to a silver halide film, and at the same time, an electronic image signal photoelectrically converted by an electronic image sensor is stored in a memory, and a subject image is displayed on a monitor based on the stored electronic image signal. For both silver halide photography and electronic imaging,
It is proposed in Japanese Patent Application Laid-Open No. 10-108054.

The camera for both silver halide photography and electronic imaging proposed in this publication has a silver halide photography optical system, a drive control function of the silver halide imaging optical system, and a drive function of a silver halide film in a camera body. In addition, the pop-up portion that can be popped up from the camera body has a strobe light emission function and an electronic imaging optical system, and simultaneously exposes a subject image captured via the silver halide shooting optical system to a silver halide film, and simultaneously sets the electronic imaging optical system. While storing the electronic image signal generated by photoelectrically converting the same subject captured through the electronic imaging device,
Monitor display.

[0004]

The above-mentioned Japanese Patent Application Laid-Open No. 10-10 / 1998
Japanese Patent Application Laid-Open No. 8054 proposes a camera for both silver halide photography and electronic imaging, in which a variable magnification focusing of a silver halide imaging optical system, driving of a diaphragm, a movable mirror, and a shutter mechanism, driving of a silver halide film, or strobe light emission control are performed. And other electronic processing such as driving of an electronic image pickup device, various electric processes of image signals photoelectrically converted by the electronic image pickup device, and recording and display of the processed image signals. It is necessary to mount the imaging drive control electric circuit in the camera body.

In order to mount these silver halide photography and electronic imaging drive control electric circuits in a limited space in the camera body, it is necessary to reduce the size of electric circuit elements, reduce the number of circuit elements used, and efficiently allocate space. Is required.

[0006] However, the above-mentioned publication discloses the arrangement of the electronic image pickup device and the LCD module in the camera, but does not disclose the arrangement of other circuits in the camera body. Absent. In particular, since the silver halide photographing electric circuit and the electronic image pickup electric circuit are deteriorated in signal characteristics due to noise and malfunction of the signal processing circuit, noise removal and electric characteristics in which signal characteristics do not deteriorate even if noise is mixed are caused. There is a need for circuit layout.

According to the present invention, when a drive control electric circuit for silver halide photographing and a drive control electric circuit for electronic image pickup are mounted in one camera body, the circuit arrangement space is made more efficient and the signal due to noise is increased. It is an object of the present invention to provide a silver halide camera having an electronic imaging function that does not cause characteristic deterioration or malfunction.

[0008]

According to the present invention, there is provided a camera body unit having a silver halide photographing optical system and a drive control unit for driving and controlling the photographing optical system, a pop-up unit popping up from the camera body unit. In a silver halide camera having a rear unit provided on a rear portion of a camera body, an imaging unit that captures a subject image to generate digital image data, and performs at least compression processing and image processing on the digital image data generated by the imaging unit. Image processing means for performing correction processing, and display means for displaying an image based on the digital image data compressed and image-corrected by the image processing means, wherein the imaging means is disposed in the pop-up unit. The image processing means is disposed in the camera body unit, and the display means is provided on a rear unit. An electronic imaging function silver salt camera being arranged within.

The imaging means of the silver halide camera with an electronic imaging function according to the present invention includes an imaging device for capturing at least a subject image and outputting an analog image signal, and an A / D converter for converting the analog image signal into a digital image signal. Wherein the display means includes a control circuit for driving and controlling the LCD monitor and the LCD unit.

The imaging means of the silver halide camera with an electronic imaging function of the present invention is a CMOS camera manufactured by a CMOS process.
An SIC, which includes at least an image sensor and an A / D conversion circuit.

According to the present invention, when a drive control electric circuit for silver halide photographing and a drive control electric circuit for electronic image pickup are mounted in one camera body, the efficiency of circuit arrangement space and the signal due to noise are increased. It has become possible to provide a silver halide camera having an electronic imaging function that does not cause deterioration or malfunction.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of various drive control electric circuits for silver halide photography and electronic imaging arranged in the silver halide camera according to the present invention, and FIG. 2 shows the basic configuration of the silver halide camera according to the present invention. FIG. 3 is a perspective view showing a part of the front view of the silver halide camera according to the present invention in a state in which the pop-up unit is stored, and FIG. FIG. 5 is a perspective view showing the rear appearance of the silver halide camera according to the present invention, FIG. 6 is a block diagram showing the internal structure of the silver halide camera according to the present invention, and FIG. FIG. 2 is a block diagram illustrating a configuration of an electronic imaging unit and an imaging control circuit of the silver halide camera.

The basic configuration of the present invention will be described with reference to FIG. The aperture 5 is provided in a silver halide photographing lens (not shown), and adjusts the amount of light of a subject passing through the silver halide photographing lens. A silver halide photographing device 6 for forming an image on a silver halide film and exposing the subject image is provided. The subject light transmitted through an electronic imaging lens (not shown) provided separately from the silver halide photographing lens forms an image on an electronic imaging device (not shown) provided in the electronic imaging apparatus 1. The electronic imaging device and the electronic imaging lens are housed in a strobe light emitting unit 8 configured to pop up from a camera body. The operation of the electronic imaging device 1 and the silver halide imaging device 6 is selectively or simultaneously controlled by the control device 4.

The electronic image pickup apparatus 1 converts a subject image formed on an electronic image pickup element into an analog image signal by photoelectric conversion, and then converts the digital image data into an analog image signal based on a well-known digital conversion and image compression data conversion method. After the conversion, the converted electronic image is transferred to the memory 2 and stored. The electronic image stored in the memory 5 is supplied to the monitor 3 and displayed as an electronic image.

The aperture 5 restricts the aperture of a subject light beam incident on a silver halide film (not shown) in the silver halide photography apparatus 6 via the imaging lens based on a control signal from the aperture arithmetic control unit 7. In order to do so, the aperture value of the taking lens is controlled.

In such a camera of the present invention, the silver halide photographing device 6 responds to the drive control from the control device 4.
The subject light is received and photoelectrically converted by the electronic image pickup device in the electronic image pickup device 1 simultaneously with the subject exposure to the silver halide film by
The generated electronic image is stored in the memory 2 and the electronic image 3
To display the image.

Thus, since the electronically picked-up image is taken at the same time as the silver halide shooting, the electronically picked up image of the subject is displayed on the monitor 3 so that the subject of the silver halide shooting can be confirmed. In addition, by arranging the electronic image pickup device in the strobe light emitting unit 8, the image pickup range becomes a position where it is not kicked by the silver halide photographing lens barrel. Since the lens is provided, the light can be projected onto the electronic image pickup device without losing the subject light flux.

Next, the external structure of the camera according to the present invention will be described with reference to FIGS. FIG. 2 shows a state in which the strobe pop-up unit 12 in which the strobe light emitting unit 8 is stored is stored in the camera body 10.
5 shows a state in which the flash pop-up unit 12 is popped up from the camera body 10, and FIG. 5 is a rear view in a state in which the flash pop-up unit 12 is stored in the camera body 10.

A power switch 11 for turning on / off the power of the camera is disposed on the upper surface of the camera body 10, and a strobe pop-up section 12 is disposed at the center of the upper surface of the camera body 10. On the top,
At a position opposite to the power switch 11, a release switch 13 for instructing to start the operation of the silver halide imaging device 6 or the electronic imaging device 1, and a shooting mode button 14 for specifying a shooting mode are arranged. Note that the flash pop-up unit 12 can pop up from the camera body 10 and mechanically pops up from the camera body 10 in conjunction with the ON operation of the power switch 11. The flash pop-up section 11 also includes a part of the electronic imaging device 1 and a flash light emitting device described later, and a light emitting panel 15 for transmitting strobe light is provided at a position substantially in front when popping up.

On the back of the camera body 10, an eyepiece window 16 of an optical finder for observing a subject image based on the subject light transmitted through the silver halide photographing lens and the electronic image pickup device 1 are formed. A monitor screen 17 for displaying an electronic image and a zoom-up / down operation button 18 for manually changing the focal length of the zoom lens of the photographing lens are arranged.

In the operation of the camera having such a configuration, first, the power switch 11 is operated to turn on the power of the camera body 10, and at the same time, the flash pop-up section 12 pops up. Next, the camera operator determines the composition of the subject while looking at the eyepiece window 16 of the optical viewfinder. At this time, the photographing composition can be changed by operating the zoom up / down button 18 and the focal length of the photographing lens can be arbitrarily changed by the composition change. In order to determine the composition and perform photographing, the photographing sequence is executed by pressing the release button 13 (details of the photographing sequence will be described later). At this time, the subject image is exposed on the film, and an image is captured by an electronic imaging device (not shown) arranged in the flash pop-up unit 12. The electronic image is captured by the camera, and the captured electronic image is displayed on the monitor 17. You. When the camera operator checks the video on the monitor and determines that his / her shooting intention is not reflected, the camera operator can try shooting again.

FIG. 1 shows the arrangement of various drive control circuits arranged inside the camera having such a basic structure and appearance.
This will be described with reference to FIG. The camera body 10 includes a film exposure unit 24 for silver halide photography, a sequence control unit 21 for centrally controlling various drive control circuits for silver halide photography and electronic imaging of the camera, and a compressed image signal generated by electronic imaging. An imaging control unit 22 for converting data, an image memory unit 23 for storing the compressed image data, and a power supply unit 25 for supplying driving power for the camera are arranged. An electronic image pickup unit 27 that photoelectrically converts a subject image captured by an electronic image pickup lens to generate a digital image signal and a strobe light emitting unit 26 that emits strobe light are arranged in the strobe pop-up unit 12 that pops up from the camera body 10. I do. further,
An image display unit 28 for displaying a captured image based on the image data generated by the imaging unit 27 and the imaging control unit 22 is disposed on the back surface 17 of the camera body 10.

The specific circuit configuration of various drive control circuits disposed on the camera body 10, the flash pop-up section 12, and the back surface 17 will be described with reference to FIG.
In the figure, reference numeral 100 denotes a body unit indicating a range arranged on the camera body 10, reference numeral 200 denotes a pop-up unit indicating a range arranged on the flash pop-up unit 12, and reference numeral 300 denotes a range arranged on the back surface 17. FIG.

The main body unit 100 includes a plurality of lenses such as a positive lens 102a and a negative lens 102b constituting a silver halide photographing lens system 102 for photographing a subject as the film exposure unit 24, and the plurality of lenses are coaxial in the optical axis. It is constituted by a diaphragm mechanism 103 provided at a predetermined upper position. The positive / negative lenses 102a and 102b of the silver halide photographing lens system 102 are so-called zoom lenses capable of performing a zooming operation for continuously changing a focal length, and a subject image is formed on a silver halide film 107 described later. The focusing operation for focusing can be performed. The positive / negative lenses 102a and 102b are provided with a zoom / focus drive circuit 112.
The drive control is performed by this, so that a predetermined automatic focus adjustment operation (AF operation), a predetermined magnification change operation (zoom operation), and the like are executed. The aperture mechanism 103 is driven and controlled by an aperture drive circuit 113, and performs an exposure adjustment operation.

The zoom / focus drive circuit 112 and the aperture drive circuit 113 control the drive of the silver halide photographing lens system 102 based on a control signal from the CPU 101 constituting the sequence control section 21. And positive and negative lens 1
The silver halide photographing lens system 102 including the lenses 02a and 102b and the aperture mechanism 103 and the electric circuits such as the zoom / focus drive circuit 112 and the aperture drive circuit 113 are provided with a lens barrel (not shown) as a holding member for holding them. ) Are arranged at predetermined positions inside.

It should be noted that the zoom / focus drive circuit 112
A drive source such as a general electromagnetic motor or an ultrasonic motor, a driver circuit for controlling the drive source, and a positive lens 102
a, a predetermined signal is generated in accordance with the movement of the negative lens 102b and the like, and an encoder device for detecting the position of each lens is included (not shown in detail). Do).

At a predetermined position on the optical axis behind the silver halide photographing lens system 102, a substantially central portion is formed by a half mirror or the like, and one end is formed by an internal fixing member (not shown) of the camera. A movable mirror 105 that is rotatably supported on a shaft is arranged. The movable mirror 105 is inclined at a predetermined angle, for example, approximately 45 degrees with respect to the optical axis of the silver halide photographing lens system 102 in a state where the photographing operation is not executed (referred to as a photographing preparation state). The reflecting surface is arranged so as to face the silver halide photographing lens system 102 (subject side) and upward.

A mirror drive circuit 114 is electrically connected to the movable mirror 105. The mirror drive circuit 114 receives a predetermined control signal from the CPU 101 and controls the drive of the movable mirror 105. It has become. That is, the movable mirror 105 and the mirror driving circuit 114 constitute a so-called quick return mechanism.

An object light beam (hereinafter, referred to as a light beam) above the movable mirror 105 and reflected by the movable mirror 105
On a light path of a finder light beam), an image of a subject to be formed by the finder light beam (hereinafter also referred to as an observation image) is formed, and a focus formed so that the focus state of the observation image can be confirmed. A finder contact comprising a plate 108, a pentaprism 109 for performing image conversion so that the observation image can be observed as an erect image, and a lens or the like for re-imaging a subject image converted into an erect image by the pentaprism. An observation optical system (hereinafter referred to as an optical finder) having the eye unit 110 and the like is provided so that a camera operator can check a subject image, an angle of view, and the like with his own eyes 111.

On the other hand, a sub-mirror 124 composed of a total reflection mirror is disposed at a substantially central portion on the back side of the movable mirror 105 so as to be rotatable with respect to the movable mirror 105. The sub-mirror 124 reflects the subject light flux transmitted through the half mirror portion substantially at the center of the movable mirror 105,
It serves to guide to a predetermined position below the sub-mirror 124. The sub mirror 124 is also driven and controlled by the above-described mirror driving circuit 114.

Below the sub-mirror 124, at a predetermined position on the reflection optical axis of the sub-mirror 124, there is disposed a separator optical system 123 composed of two optical systems for separating a subject light beam into two images. I have. A line sensor 122 is disposed at an image forming position of the subject image re-formed by the separator optical system 123. The line sensor 122 is electrically connected to the line sensor drive circuit 115.
Receives a predetermined control signal from the CPU 101 and drives and controls the line sensor 122.

Each of these components, namely, the sub-mirror 124, the separator optical system 123, and the line sensor 1
A focus detection device using a general phase difference detection method is configured by the reference numeral 22, the line sensor drive circuit 115, and the like. In this case, the CPU 101 calculates the distance between the two images by the separator optical system 123 based on the signal input from the line sensor 122 via the line sensor drive circuit 115, and calculates the lens drive amount and the like when performing the focus adjustment operation. Is calculated. Information such as the drive amount calculated in this manner, that is, the line sensor 12
The lens drive amount and the output from the encoder device (lens position information) calculated based on the output (integration result) from the zoom / focus drive circuit 1 via the CPU 101
12 and thereby the silver halide photographing lens system 102
Each of the positive / negative lenses 102a and 102b is driven to a desired position (focus point) to control the focus adjustment operation, and at the same time, perform the zooming operation.

Behind the movable mirror 105, the amount of exposure (exposure time) of the luminous flux of the object to the light receiving surface of the film 107 when the silver halide film 107 (hereinafter simply referred to as a film) is exposed is controlled. Shutter mechanism 1
A film 107 is provided at a predetermined position immediately after the shutter mechanism 106 at a predetermined interval.

The shutter mechanism 106 is driven and controlled by the CPU 101 via a shutter drive circuit 116. For example, the movable mirror 105 is moved upward by a mirror drive circuit 114 to a retracted position from the optical axis in the drawing. When rotated, the shutter mechanism 106 is simultaneously rotated.
Is driven by the shutter drive circuit 116 so as to be in an open state for a predetermined time. As a result, the light receiving surface of the film 107 is irradiated with almost all of the light beam transmitted through the silver halide photographing lens system 102, and an object image formed by this is formed on the film emulsion surface (light receiving surface). A predetermined exposure is performed on 107.

As a shutter constituting a part of the shutter mechanism 106, for example, a focal plane shutter generally used in a conventional single-lens reflex camera or the like is applied. This focal plane shutter normally uses a biasing force of a biasing means charged prior to an exposure operation to set a front curtain and a rear curtain between one end and the other end of a shooting screen. At predetermined intervals. Regarding the configuration of the shutter mechanism 106, it is assumed that a focal plane shutter that has been generally practically used from the past is applied, and a detailed description thereof will be omitted.

The film 10 used in this camera
Reference numeral 7 denotes a rolled silver halide film for photography, which is wound and stored in a film cartridge of a general form. On a light receiving surface of the film 107, that is, on a back surface side of the emulsion surface and in a predetermined region of the film 107, a magnetic recording layer or the like capable of magnetically recording various information is formed. A magnetic head (not shown) is arranged at a predetermined position on the camera side facing the magnetic recording layer so as to contact the magnetic recording layer.

This magnetic head is capable of magnetically recording various information in a predetermined area (magnetic recording layer) on the film 107, and is provided with a CPU 101 via a magnetic head drive circuit (not shown). Drive control is performed.

Further, a film drive circuit 117 for controlling a film feeding operation is provided near the film 107 loaded in the main body of the camera. The film driving circuit 117 is driven by a driving force transmitted via a film feeding mechanism (not shown) including a gear train for feeding the film, for example, each time a photographing operation for one frame is completed. Then, drive control or the like for automatically winding the film 107 by a predetermined amount is performed, whereby an operation such as disposing the next frame (unexposed portion of the film) at a predetermined position inside the camera is performed.
The magnetic recording operation of the predetermined information on the film 107 by the magnetic head is performed in conjunction with the winding operation of the film 107 by the film driving circuit 117 or the like.

In this camera, as means for observing the subject image, in addition to a display means (LCD monitor 302) in an electronic image pickup device to be described later, an optically formed subject image (observation image) is provided. The optical finder to be observed is also provided side by side.

The camera is provided with the optical finder separately from the display means for the following reason.
That is, a conventional general silver halide camera usually includes an optical finder as a means for confirming an observed image when taking a photograph.

Normally, when taking a photograph,
If the camera slightly moves due to so-called camera shake during the shooting operation, a good image may not be obtained. Therefore, it is necessary to securely hold the camera during the execution of the photographing operation. In this case, when using the optical viewfinder,
Inevitably, the camera will be placed near the user's face (i.e., the eyes), so that the camera will be supported by a portion of the face in addition to being gripped by both hands. Therefore, when observing the observation image using the optical viewfinder, the camera can be securely held to prevent camera shake and the like.

On the other hand, a conventional general electronic image pickup apparatus or the like is provided with display means such as a liquid crystal display for displaying an image for observation or displaying a photographed image prior to an image pickup operation. It is common to use as a finder. In order to observe an image displayed on this display device, it is usually necessary to separate the camera itself from the user's eyes by a certain distance. Therefore, in order to perform an imaging operation while confirming an observation image using this display means, the user must hold the camera with only both hands.
In this case, the camera tends to be in an unstable state as compared with a case where a photograph is taken while observing an observation image using an optical viewfinder, and problems such as camera shake often occur. Will be lost. On the other hand, when the photographing operation is performed while confirming the observation image using the display means, since the camera and the user's eyes are separated from each other, there is no restriction on how to hold the camera. There is also an advantage that it is possible to easily perform photographing with a simple photographing angle or the like.

Therefore, in order to obtain better photographing or imaging results, the present camera uses a display means for receiving an electric image signal and displaying an observation image corresponding thereto, and an optically formed observation image. An optical viewfinder for directly observing an image is provided with two observation means, which can be appropriately used.

Reference numeral 121 in the drawing denotes various operation switches for generating a predetermined command signal in conjunction with each operation member (not shown) for performing various operations of the camera, and mechanical mechanical states. Is a switch input composed of a plurality of switches and the like such as a detection system switch for detecting the like. For example, a first release switch that generates a predetermined ON signal in conjunction with a first operation of a release button 13 that is an operation member, or a predetermined ON signal that is generated in conjunction with a second operation of the release button 13 A second release switch, a power switch 11 for generating a power ON / OFF signal in conjunction with a slide operation member (not shown), and a predetermined signal corresponding to various shooting modes to generate a desired image. Shooting mode setting switch 14 for setting the mode and the like
Etc.

Reference numeral 118 in the drawing denotes an electronic flash control circuit for controlling electronic flash emission for an electronic flash unit 25 described later. Further, the sequence controller unit 21 is provided, in addition to the CPU 101, for storing various information such as, for example, adjustment data relating to the components of the camera, an operating state of the camera, and a program diagram for determining an appropriate exposure. And a non-volatile semiconductor memory (not shown) such as a ROM.

Next, the configuration of various drive controls arranged in the pop-up unit 200 will be described. The pop-up unit 200 includes a light emitting tube 202 that emits strobe light as a strobe light emitting unit 26, and the light emitting tube 20.
Reflective umbrella 201 for directing the strobe light 2 to the subject
And a trigger circuit 20 for causing the arc tube 202 to perform a light emitting operation
The trigger circuit 203 is connected to the flash control circuit 118 of the main unit 100 via a connection point 131, and is driven by the flash control circuit 118 under the control of the CPU 101 to control the subject. Projection of illumination auxiliary light for.

In the pop-up unit 200,
The imaging unit 27 forms an electronic imaging lens system including a plurality of lenses such as a positive lens 204 and a subject captured by the electronic imaging lens system, and converts the formed subject image into an electrical signal. An area sensor 205 composed of an electronic image sensor such as a CCD, a sensor drive circuit 207 for controlling the drive of the area sensor 205, and an area sensor 20 based on the drive control of the sensor drive circuit 207;
And a signal processing circuit 206 for converting the analog image signal converted and generated in step 5 into a digital image signal.
The signal processing circuit 206 is connected via a connection point 132, and the sensor drive circuit 207 is connected via a connection point 133 to an imaging control circuit 119 (imaging control unit 22) provided in the main unit 100.

The imaging control circuit 1 of the main unit 100
19, under the control of the CPU 101, performs compressed image data generation and display image signal processing based on the digital image signal supplied from the signal processing circuit 206, and also controls the area sensor 205 via the sensor drive circuit 207. It controls the driving. Further, the imaging control circuit 119 controls the recording of the compressed image data generated by the signal processing circuit 206 in the nonvolatile memory 120 (image memory unit 23) in the main unit 100, and will be described later via the connection point 134. A display image signal for displaying a captured image is supplied to an LCD controller 301 provided in the rear unit 300.

The electronic imaging lens system incorporated in the pop-up unit 200 has a so-called single focal length lens set at a single focal length. And this lens 2
It is constituted by a diaphragm mechanism (not shown) provided at a predetermined position on the same axis as the optical axis 04. The positive lens 204 is driven and controlled by a predetermined driving circuit (not shown), and can execute a predetermined AF operation and the like. The aperture mechanism is also driven and controlled by a predetermined drive circuit (not shown) to perform an exposure operation and the like.

The non-volatile memory 120 of the main unit 100 can electrically rewrite an electric image signal representing an image, and can store electric power from a battery (not shown) as a main power supply of the camera. Even when there is no supply, a recorded electric image signal can be held, and a generally used one such as a small card-shaped PC card is applied. Further, the irradiation angle of view of the strobe light emission is set to substantially match the imaging angle of view on the shortest focus side (wide end) of the silver halide photographing optical system 102.

Next, the rear unit 300 is connected as an image display unit 28 to the imaging control circuit 119 disposed in the main unit 100 via a connection point 134 via an LC.
D controller 301 and this LCD controller 301
An LCD monitor 302 composed of a liquid crystal display element or the like for displaying an image of a subject image electronically captured under the control of is provided. The digital image data stored in the nonvolatile memory 120 is read under the control of the imaging control circuit 119, and an image is displayed under the control of the LCD controller 301 based on the read data.

Further, the rear unit 300 has C
A date imprinting circuit 303 is arranged on the PU 101 via a connection point 135. This date imprinting circuit 303
Is a circuit for imprinting the shooting date and time on the silver halide film 107 together with the subject exposure based on a timer (not shown) built in the CPU 101.

When the focal length of the silver halide photographing lens system 102 is displaced by the zoom / focus drive circuit 112, that is, when the zoom operation is executed, the imaging control circuit 119 operates in conjunction with the electronic control. The image signal acquired by the objective imaging device is subjected to a slight enlargement or reduction process (so-called electronic zoom process) so as to substantially match the shooting angle of view corresponding to the focal length of the silver halide shooting lens system 102. Then, this is output to the LCD monitor 302, and a corresponding image is displayed. This gives L
The display angle of view of the electronic image displayed on the CD monitor 302 is
The angle of view of the latent image actually recorded on the film 107 always substantially coincides with the angle of view.

A battery 140 is disposed in the main unit 100 as a power supply section 25 for supplying drive power to the above-described various drive circuits and signal processing circuits of the present camera, a photographing lens, and the like.

In the camera having such a configuration, when the power switch 11 is turned on, the strobe pop-up unit 12 (pop-up unit 200)
Pop up from. The photographer is a silver halide photography lens system 10
When the first release of the release button 13 is turned on while visually recognizing the subject captured in 2 through the optical viewfinder window 16, the switch input 121
The ON information of the first release is transmitted, and the zoom / focus drive circuit 112 is integrated from the line sensor drive circuit 115 based on the integration operation between the two images of the line sensor 122 based on the shooting preparation sequence stored in advance in the CPU 101. From the current position of the positive / negative lenses 102a, 102b to the in-focus position, and the area sensor 2 of the electronic imaging device.
Imaging control circuit 1 for converting the analog image signal photoelectrically converted in step 05
19, a driving instruction to the sensor driving circuit 207, a signal reading in the signal processing circuit 206, and luminance value data of the subject are calculated from the digital image data, and the luminance value data and the sensitivity of the film 107 (not shown) are calculated. Based on the data, the aperture of the aperture mechanism 103 is adjusted via the aperture drive circuit 113, and the opening / closing speed of the shutter mechanism 106 by the shutter drive circuit 116 is set.

Next, when the second release of the release button 13 is turned on, the CPU 101 drives the mirror driving circuit 114 based on the photographing sequence to drive the rotating mirror 105.
Is retracted from the optical axis of the silver halide photographing lens system 102, and the shutter drive circuit 116 controls the shutter mechanism 1
The subject image is exposed on the film 107 by opening the aperture 06 for a set time. Along with the silver halide shooting by the second release-on, the digital signal converted and generated by the signal processing circuit 206 based on the analog image signal photoelectrically converted by the area sensor 205 at the time of the second release-on via the imaging control circuit 119. The image data is stored in the nonvolatile memory 120 as compressed image data.

When the release button 13 is turned off, the CP
U101 drives and controls the film drive circuit 117 to wind up the film 107 by one frame, reads out the digital compressed image data stored in the nonvolatile memory 120 by the imaging control circuit 119, and
1, a captured image is displayed on the LCD monitor 302,
The image and angle of view of the photographed subject by the photographer are confirmed.

With the configuration of the present invention described above, the area sensor 205, which is an electronic image pickup device, is disposed in a pop-up unit that pops up from the camera body 10. Since the output of the area sensor 205 of the electronic image sensor is an analog signal, it is generally necessary to transmit the analog signal to a processing circuit disposed at a remote location (for example, in the main unit 100) by a signal line during transmission. Although the S / N ratio is deteriorated due to external noise mixing and transmission loss of the signal line, the camera of the present invention includes the area sensor 205 and the signal processing circuit 206 in the pop-up unit 200. The transmission line of the converted and generated analog image signal to the signal processing circuit 206 can be minimized, and external noise and transmission loss can be minimized. Further, after converting the analog image signal into the digital image signal by the signal processing circuit 206, the imaging control circuit 11
For transmission to the digital image signal 9, even if external noise is mixed in the transmission process of the digital image signal, the external noise can be removed from the digital image signal in the process of compressed image data conversion processing.

It is desirable that the imaging control circuit 119 serving as the imaging control unit 22 be arranged in the same pop-up unit 200 as the imaging unit 27. However, the strobe light emitting unit 26 is arranged in a limited arrangement space. Due to the arrangement, the pop-up unit 200 can be minimized by arranging the pop-up unit 200, and the digital signal is transmitted and received between the imaging unit 27 and the imaging control unit 22 as described above. It is not affected by transmission loss.

Further, since the image display section 28 needs to be provided with a backlight circuit for the LCD monitor 302 in particular, this backlight circuit becomes a noise generation source, and a photometric or distance measuring circuit (line sensor) for silver halide photography. Drive circuit 11
This causes the malfunction of 5). Also, the LCD monitor 302
Has a 2 inch diagonal footprint. For this reason, by arranging the image display unit 28 on the back surface 17 of the camera body 10, the occupied area of the LCD monitor 302 of the image display unit 28 can be secured, and the separation distance from the photometry and distance measurement circuits is secured. And noise shielding became possible.

Further, since the storage space of the battery 140, which is a driving power supply to be supplied to various drive control circuits of each unit, is large, it is possible to arrange the power supply unit 25 in the main unit 100 to secure the space for arranging it. did.

Next, another embodiment of the present invention will be described with reference to FIG. In the other embodiment shown in FIG. 7, when each of the area sensor 205, the signal processing circuit 206, and the sensor driving circuit 207 constituting the imaging unit 27 is configured by an IC of a CMOS process, these are one. The package is housed in the imaging circuit 500.

The imaging circuit 500 includes a CMOS image sensor 501, a noise removal circuit 502 for removing noise from the sensor signal, an AGC circuit 503 for adjusting the degree of amplification when amplifying the image signal, and a digital image signal for the analog image signal. The circuit includes an A / D conversion circuit 505 for converting data, and a timing circuit 504 for controlling operation timing of each circuit. The CMOS image sensor 501 of the imaging circuit 500 is connected to the area sensor 205, the AGC circuit 503 and the timing control circuit 504 are connected to the sensor drive circuit 207, and the noise removal circuit 502 and the A / D conversion circuit 505 are connected to the signal processing circuit 206. Equivalent to.

On the other hand, the imaging control circuit 119 of the main unit 100 includes the image processing circuit 6 for performing the above-described image processing operation.
01, a compression circuit 602 for image compression; a communication circuit 6 for transmitting a control signal from the sequence control unit to the imaging circuit 500 and transmitting a control signal to the image display unit 28
03 is included.

As described above, in the silver halide camera of the present invention, various electric circuits for driving and controlling the photographing and imaging functions can be efficiently arranged in the camera body, and particularly, the circuit operation and the signal characteristics are affected. For noise that gives
At least an image sensor that captures an image of a subject and an analog-to-digital conversion circuit for converting an image signal generated by the image sensor into a pop-up unit that pops up from the camera body prevent external noise from being mixed into the analog video signal and provide a signal transmission path. The transmission loss can be improved by shortening the distance, and the image display unit is arranged on the back unit of the camera body, and the noise generated from the screen display backlight causes photometry of the film exposure unit and erroneous measurement of the distance measurement device. Malfunction can be prevented.

[0066]

According to the silver halide camera having the electronic image pickup function of the present invention, the drive control circuit for photographing and image pickup functions of the camera can be efficiently arranged in a limited space of the camera body, and the operation of each circuit due to noise can be achieved. This has an effect that it is possible to prevent an influence on a generated signal characteristic and a calculation result, and to perform highly reliable drive control at the time of operating the camera.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of various drive control electric circuits for silver halide photography and electronic imaging arranged in a silver halide camera according to the present invention.

FIG. 2 is a block diagram showing a basic configuration of the silver halide camera according to the present invention.

FIG. 3 is a perspective view showing the front part of the external appearance of the silver halide camera according to the present invention in a state in which a pop-up unit is stored.

FIG. 4 is a perspective view showing the front part of the pop-up portion of the silver halide camera according to the present invention in a pop-up state;

FIG. 5 is a perspective view showing the rear appearance of the silver halide camera according to the present invention.

FIG. 6 is a block diagram showing the internal configuration of the silver halide camera according to the present invention.

FIG. 7 is a block diagram showing a configuration of an electronic imaging unit and an imaging control circuit of the silver halide camera according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Camera body 12 ... Strobe pop-up part 17 ... Back part 21 ... Sequence control part 22 ... Imaging control part 23 ... Image memory part 24 ... Film exposure part 25 ... Power supply part 26 ... Strobe light emitting part 27 ... Imaging part 28 ... Image display Department

Continued on the front page F term (reference) 2H018 AA32 BE01 2H054 AA01 BB07 2H100 AA33 BB05 BB09 5C022 AA13 AB12 AB15 AB23 AB27 AB36 AB40 AB66 AC03 AC32 AC42 AC54 AC74

Claims (3)

[Claims] A camera body unit including a silver halide photographing optical system and a drive control unit for driving and controlling the photographing optical system;
In a pop-up unit that pops up from the camera body unit and a silver halide camera having a back unit provided on a back portion of the camera body, an imaging unit that captures a subject image to generate digital image data; Image processing means for performing at least compression processing and image correction processing on the generated digital image data, and display means for displaying an image based on the digital image data compressed and image corrected by the image processing means. Wherein the imaging means is arranged in the pop-up unit, the image processing means is arranged in the camera body unit, and the display means is arranged in the rear unit. . 2. An image pickup device comprising: an image pickup device for picking up at least a subject image and outputting an analog image signal; and an A / D conversion circuit for converting the analog image signal into a digital image signal. Is the LCD monitor and its L
The silver halide camera with an electronic imaging function according to claim 1, further comprising a control circuit for driving and controlling a CD monitor. 3. The image pickup means is a CMOS IC manufactured by a CMOS process, and includes at least an image pickup device and an A
The silver halide camera with an electronic imaging function according to claim 1 or 2, further comprising a / D conversion circuit.