JPH10178652A - Image pickup device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically set a photographic mode in accordance with a state of a signal processing circuit, to prevent an erroneous operation and to improve operability by automatically changing photographic modes of a moving image and a still picture. SOLUTION: When a position in a decision range of an output color difference signal R-Y of a color difference signal generating circuit 505 is outside the range, this device is set to a moving image mode, image memory 511 is set to a through state and an inversion operation of a negative-positive inversion circuit 513 is turned off so that there may be no negative-positive inversion. When the signal R-Y is within the range and the position of an output color difference signal B-Y of the circuit 505 is outside the decision range, a moving image photographic mode is selected and the same processing is performed. When it is inside the range, a still picture photographic mode is picked up. When a trigger is tuned on, the memory 511 is set to a still picture fetching wait state and negative-positive inversion is carried out by turning on the inversion operation of the circuit 513 through a control signal 512 that is outputted by a camera control circuit 507. That is, when it is detected that a negative film is photographed, a still picture photographic mode is automatically selected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an automatic setting function of an imaging mode of an imaging apparatus represented by a video camera.

[0002]

2. Description of the Related Art With the rapid technical improvement of personal computers and their peripheral devices, for example, it is possible to easily take pictures taken by an operator into a memory in the personal computer and edit them to create original postcards and posters. As a result, market demands for this technical field are increasing year by year.

[0003] For example, when taking a picture into a personal computer,
It is necessary to use a video camera to convert the video information of a photograph into an electrical signal, but photographs printed on photographic paper vary in size, and setting the angle of view and illuminating the light are troublesome. In addition, a large dedicated photographing device such as a fixed base for a video camera is required.

Therefore, a system has been proposed in which an adapter capable of mounting a negative (positive) film or the like is attached to a photographing lens of a video camera or an electronic still video camera, and an image of the film is taken and taken into a monitor display or a personal computer. I have.

[0005]

However, in the above-mentioned conventional example, the function of merely taking a film is provided, and if the video signal processing is not changed between negative and positive, the monitor remains unchanged as the negative image. Is displayed on
If the image is not displayed when the frame of the film is correctly positioned, there is a problem that an image during the movement of the film or an image of a frame that does not match the position is displayed.

Therefore, when photographing a still image of a negative film using a film adapter or the like, it is necessary for the operator to set a negative / positive reversal mode and then perform a switch operation to shift the apparatus to the film photographing mode. If the switch operation related to the film shooting mode is forgotten and troublesome, an unnecessary scene such as a film feeding operation may be shot as a moving image.

Therefore, an object of the present invention is to automatically shift the apparatus to a photographic film photographing mode when a process of inverting a negative film image to a positive film image is performed, and the above-mentioned disadvantages are eliminated. Solve the problem,
An object of the present invention is to provide an imaging device with good operability and reliable operation.

On the other hand, among the still image photographing modes, those having two modes, a continuous photographing mode and a single photographing mode, require the operator to switch the photographing mode according to the purpose at each time.

The main purpose of continuous shooting is to avoid missing a shooting opportunity when capturing a moving subject as a still image. When taking a still image of a negative film using a film adapter or the like, the subject is a complete still image integral with the camera. You will shoot many pictures.

That is, if the user forgets to confirm the mode and switch operation to always set the camera to the single shooting mode, as described above, the same still image may be unnecessarily photographed.

Accordingly, a further object of the present invention is to automatically shift the apparatus to a still image single-shot mode and inhibit the shift to a still image continuous shooting mode when a film image is captured by a camera. It is to solve the problem of.

A further object of the present invention is to provide a rapid change of a video signal (movement of a video signal) that occurs when a film is moved (moves to another frame) when a negative film or a slide film is actually photographed. Level change) to a minimum,
An object of the present invention is to provide an imaging device capable of always displaying a high-quality image.

[0013]

According to a first aspect of the present invention, there is provided an imaging apparatus capable of switching between a moving image shooting mode and a still image shooting mode. , An imaging optical system (in the embodiment, FIG.
An imaging unit (in the embodiment, the imaging device 407 in FIG. 4) that photoelectrically converts a subject image formed through the lenses 402, 403, 405, and 406 and the aperture 404 in FIG. 8 and outputs an imaging signal. ), A first luminance component generating means (corresponding to the YC signal generation circuit 502 in the embodiment) for generating a luminance signal component from the image signal, and a first luminance component generating means for generating a color component from the image signal. (Corresponding to the color difference signal generation circuits 503 and 504 in the embodiment), and a second luminance component for generating a luminance component in which a bright part and a dark part are respectively inverted according to the luminance level of the imaging signal. Generating means (corresponding to the negative-positive inverting circuit 513 in the embodiment) and second color component generating means (in the embodiment, generating a color component by a predetermined conversion method according to the color component of the imaging signal. , Corresponding to the negative-positive inversion circuit 513) and In the case where a video signal is generated using output signals of the second luminance component generation unit and the second color component generation unit, the video signal can be switched between a moving image shooting mode and a still image shooting mode. Control means for switching to the image shooting mode (in the embodiment, in the processing of the flowchart of FIG. 3 executed by the camera control circuit 105, the film shooting mode and the moving image shooting mode depend on whether or not the color difference signal is within the range 201 of FIG. (Equivalent to processing for selecting a mode).

According to a second aspect of the present invention, in the first aspect, a color identification means for identifying a color of the subject in accordance with a color component in the image pickup signal (in the embodiment, a camera control circuit 105 (Corresponding to the processing of steps 302 and 303 in the flowchart of FIG. 3) corresponding to the processing performed by the first luminance signal generating means and the first luminance signal generating means for generating the video signal. 1
Whether to use the output of the color component generation means or to use the second luminance signal generation means and the second color signal generation means based on the output of the color identification means, When a video signal is generated using an output signal of the luminance component generation unit and the output signal of the second color component generation unit, the imaging apparatus is configured to switch to the still image shooting mode.

According to a third aspect of the present invention, in the first aspect, an imaging optical system in which a position of a lens changes according to a subject distance, and position detecting means for detecting a position of the lens (embodiment) In the lens / camera control circuit 418 shown in FIG. 4, this corresponds to processing for counting the number of drive pulses supplied to the variable power lens driver 413 and the focus competition lens driver 415). When the detecting means detects that the lens is at a predetermined position, and generates a video signal using output signals of the second luminance component generating means and the second color component generating means, An imaging apparatus configured to forcibly switch to a shooting mode is featured.

According to the invention described in claim 4 of the present application, an image pickup means for photoelectrically converting an optical image formed through an image pickup optical system and outputting an image pickup signal (in the embodiment, the image pickup device shown in FIG. 4) 407) and a first luminance component generation unit (in the embodiment, a YC signal generation circuit 502) that generates a luminance component of the video signal according to a luminance level of the imaging signal.
And a first color component generation unit (corresponding to the color difference signal generation circuits 503 and 504 in the embodiment) that generates a color component of the video signal in accordance with a color component of the imaging signal.
A second luminance component generation unit (corresponding to a negative-positive inversion circuit 513 in the embodiment) for generating a luminance component of the video signal in which a bright part and a dark part are respectively inverted according to a luminance level of the imaging signal; A second color component generation unit (corresponding to the negative-positive inversion circuit 513 in the embodiment) that generates a color component of the video signal according to a predetermined conversion method in accordance with the color component of the signal; The mode can be switched between a still image single shooting mode in which an image is shot and a still image continuous shooting mode in which the still image is shot continuously.
When the video signal is generated by using the output signals of the luminance component generation unit and the second color component generation unit, the control unit (in the embodiment, the camera of FIG. (Corresponding to the processing of the flowchart in FIG. 17 executed by the camera control circuit in the signal processing circuit 409).

According to a fifth aspect of the present invention, in the fourth aspect, a color identification means for identifying a color of the subject according to a color component in the image pickup signal (in the embodiment, the camera control circuit 105 17 corresponding to the processing of steps 1702 and 1703 in the flowchart of FIG. 17) corresponding to the processing performed by the first luminance signal generating means and the first luminance signal generating means for generating the video signal. Whether to use the output of the first color component generation means or to use the second luminance signal generation means and the second color signal generation means based on the output of the color identification means; When a video signal is generated by using the output signal of the luminance component generating means and the output signal of the second color component generating means, the mode is switched to the still image single shooting mode, and the mode is switched to the still image continuous shooting mode. Wherein the configured imaging device so as to prohibit e.

According to the sixth aspect of the present invention, in the fourth aspect, the imaging optical system in which the position of the lens changes according to the subject distance (in the embodiment, the lenses 402 and 403 in FIGS. 4 and 8) , 405, 406, and aperture 404) and position detecting means (in the embodiment,
In the lens / camera control circuit 418 shown in FIG. 4, a variable power lens driver 413 and a focus competition lens driver 415
The control means detects that the lens is at a predetermined position by the position detecting means, and the second luminance component generating means And when the video signal is generated using the output signal of the second color component generation means, forcibly switching to the still image single shooting mode and prohibiting switching to the still image continuous shooting mode. The imaging device thus configured is characterized.

According to the seventh aspect of the present invention, in the embodiment of the image pickup optical system, the lens / camera control circuit 418 shown in FIG. Imaging means (equivalent to the image sensor 407 in FIG. 4 in the embodiment) for photoelectrically converting an optical image formed through the driving signal (corresponding to processing for counting a driving pulse) and outputting an imaging signal; Negative / positive reversing means (in the embodiment, negative / positive reversing circuit 51) for performing predetermined processing on the color signal and the negative / positive reversal.
3) can be switched between a still image single shooting mode in which a single still image is shot and a still image continuous shooting mode in which the still images are shot continuously. Sometimes, the imaging apparatus is provided with a control unit (in the embodiment, corresponding to the processing in the flowcharts shown in FIGS. 17 and 18 by the camera control circuit) for inhibiting switching to the still image continuous shooting mode. .

According to an eighth aspect of the present invention, in the seventh aspect, a color identification means for detecting that a negative film is photographed in accordance with a color component in the image pickup signal (in the embodiment, Steps in the flowchart of FIG. 17 corresponding to the processing performed by the camera control circuit 105
1702, 1703), and the control means operates the negative-positive reversal means by operating the negative-positive reversal means when the color identification means detects that the negative film is being photographed. And an imaging device configured to switch to the still image single shooting mode and prohibit switching to the still image continuous shooting mode.

According to the ninth aspect of the present invention, in the eighth aspect, the imaging optical system in which the position of the lens changes according to the subject distance (in the embodiment, the lenses 402 and 403 of FIGS. 4 and 8) , 405, 406, and aperture 404) and position detecting means (in the embodiment,
In the lens / camera control circuit 418 shown in FIG. 4, a variable power lens driver 413 and a focus competition lens driver 415
The control unit detects that the lens is at a predetermined position by the position detection unit, and the color film identification unit detects the negative film. If it is detected that the image has been captured, the negative / positive reversing means is operated to perform negative / positive reversal, and the mode is switched to the still image single shooting mode and the mode is switched to the still image continuous shooting mode. The imaging device is configured to be prohibited.

According to the tenth aspect of the present invention, there is provided an imaging apparatus having a normal photographing mode and a film photographing mode for photographing a film or the like, wherein the photographing means (corresponding to the photographing element 2006 in FIG. 20). ) And exposure control means for extracting a predetermined signal component from the imaging signal output from the imaging means and performing exposure control (in FIG. 20, a gate circuit 2011, an integrator 2012, and a system control circuit 2013).
Exposure control circuit, D / A converter 2016, iris drive circuit
2017, an iris motor 2019, an iris 2005, and an iris encoder 2015) and control means (system control in FIG. 20) for changing the response characteristics of the exposure control means between the normal shooting mode and the film shooting mode. (Corresponding to a reset pulse generator in the circuit 2013).

According to an eleventh aspect of the present invention, in the tenth aspect, the predetermined signal component is a luminance signal level, and the exposure control means integrates the luminance level over a predetermined period. A control unit configured to increase an integration time constant of the integrator when the film shooting mode is selected.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, an embodiment of an imaging apparatus according to the present invention will be described with reference to the drawings.

An embodiment of the present invention is directed to an image pickup apparatus capable of taking a negative or positive film using a film adapter detachable from a video camera or the like. First, in describing the embodiment of the present invention, A description will be given step by step starting from a prerequisite configuration of the system in the embodiment of the present invention.

FIG. 10 shows a state in which the film adapter 3 is attached to the video-integrated camera 4 and the negative film 1 sandwiched between the film holders 2 is photographed. The film adapter 3 illuminates the negative film 1 from behind with a backlight, not specifically shown, in the inside 3, and the transmitted image is captured by the video-integrated camera 4.

At this time, if the video-integrated camera 4 has a function of converting a negative image into a positive image (negative-positive conversion), the output electric signal is a video signal of a positive image.

When this output signal is input to the personal computer 5,
The positive image can be taken into the memory in the personal computer. Since the size of each frame of the negative film is uniform and the light source can be unified with the above backlight, the method shown in Fig. 10 makes it very easy to convert photographic images to a personal computer rather than taking a photo printed on photographic paper. Can be imported into

By the way, the image information of the negative film is literally inverted and displayed with respect to the positive image. FIG. 11 is an example of a color difference vector display of a color negative film in a negative state and a positive state. Indicates color difference vector coordinates,
The horizontal axis is the color difference signal BY axis and the vertical axis is the RY axis. As is apparent from the figure, the color difference vector is inverted by 180 ° between the two states before the negative / positive inversion and after the negative / positive inversion.

FIG. 4 is a block diagram showing a schematic configuration of the camera-integrated video of FIG. 10, and a portion relating to the negative / positive inversion function is shown in detail in FIG. In FIG. 4, reference numeral 401 denotes a subject, and usually, a person or a landscape is to be photographed. However, when the usage shown in FIG. 10 is to be performed, a negative film or a slide film is to be photographed. Is also very close.

Looking at the image pickup optical system, reference numeral 402 denotes a fixed first lens unit, 403 denotes a variable power lens, 404 denotes an aperture, 405 denotes a fixed third lens unit, and 406 denotes a focal plane movement due to focus adjustment and zooming. This is a focus competition lens that also has the function of correcting the. Reference numeral 407 denotes an image pickup device such as a CCD constituting an image pickup means, 408 denotes an AGC circuit, and 409 denotes a camera signal processing circuit, the details of which are shown in FIG. 410, 411, 412
Reference numeral denotes a variable power lens motor, an IG meter, and a focus competition lens motor for driving a variable power lens, an aperture, and a focus competition lens, respectively. 413, 414, 415 are variable magnification lens 410, aperture 411, focus competition lens respectively
A driver for supplying a drive energy current to the 412.

Reference numeral 416 is an aperture control circuit, 417 is a circuit for processing an evaluation value used for autofocus (AF) control, 418 is a circuit for controlling a lens and a camera, and 419 is a system controller for controlling the entire system of a video-integrated camera. (System controller), 420 is a switch group provided in the video integrated camera, and 421, 422, 423 are communication lines for data communication between the circuits.

FIG. 8 shows a lens system including a fixed first group lens 402, a variable power lens 403, a stop 404, a fixed third group lens 405, and a focus compensating lens 406.

This type of configuration is called an inner focus type lens system. In FIG. 9, the horizontal axis indicates the position of the variable power lens and the vertical axis indicates the position of the focus lens, and the focus lens for the object distance corresponding to each focal length. The in-focus position of the imaging surface 406 is indicated by a plurality of trajectories.

That is, in the lens system as shown in FIG. 8, when the focus compensating lens is moved on the image pickup surface 407 to focus an image, the focus compensating lens for the object distance is set in accordance with each focal length. The position changes.
Especially on the short focal length side
It is known that moving the 407 to the vicinity of the close end reduces the minimum focusable subject distance to just before the fixed first group lens 402.

In order to accurately trace the trajectory shown in FIG. 9, the position of the variable power lens and focus compensating lens is detected by using a step motor for each drive motor, and from the lens / camera control circuit 418 to each of the drivers 413 and 415. This can be performed by counting the driving pulses supplied in the lens / camera control circuit 418.

A curve 901 is a focusing curve for a very short subject distance several cm immediately before the lens 402. The focusable area of the variable power lens 403 with respect to this subject distance is the focal length from the wide end to the area 902. It can be seen that the area is limited on the short side. Therefore, when photographing a film at a very short distance from the lens 102 using a film adapter as shown in FIG. 10, in order to obtain a focused image on the imaging surface of the imaging element 407, a variable power lens and a focus compensating lens are required. Must be in a portion 904 surrounded by three regions 901, 902 and 903 in FIG.

Therefore, when photographing a film as shown in FIG. 10, the position of the variable power lens and the position of the focus compensating lens are changed by the switches in the switch array 420 in FIG. FIG. 11 shows an example of the internal configuration of the switch array 420. The zoom lens position is set in an area 902 by a zoom adjustment switch 1104 arranged in the switch array 420, and an autofocus circuit is set. Or the focus compensating lens must be moved into the area 904 by operating the focus compensating lens manual movement switch 1105 disposed in the switch array 420.

FIG. 5 is a block diagram showing the configuration of the camera signal processing circuit 409. The portion surrounded by a broken line corresponds to the camera signal processing circuit 409. The camera signal processing circuit constitutes signal processing means for generating a video signal of the present invention.

Reference numeral 501 denotes an image pickup optical system, and lenses 402 and 40
A lens system consisting of 3, 405, 406 and aperture 404.
It is shown in a simplified manner. Reference numeral 502 denotes a YC signal generation circuit that separates luminance signals YH and YL and color signals R (red) and B (blue) from the output of the AGC circuit 408 and outputs the separated signals.
Reference numerals 503 and 504 denote gain control circuits for R and B, respectively. The levels of the color difference signals RY and BY are detected by the camera control circuit 507, and 503 and 504 are set so as to obtain an appropriate white balance.
And outputs the adjusted color signals R ′ and B ′, respectively.

Reference numeral 505 denotes a color difference signal R-Y from YL, R, B.
A color difference signal generation circuit for generating BY, 506 are YH, R-
An encoder for generating a television signal from Y and BY, a synchronization signal generation circuit 508 for supplying a synchronization signal to a camera control circuit, and a reference signal 509 for adjusting the gains of 503 and 504 [RY] Ref, [BY] ref.

An image memory 511 connected to the camera control circuit 507 via a communication line 510 is for taking in a still image, and specifically, a moving image shooting mode on a switch array 420 as shown in FIG. / Still image shooting mode switch 11
When the still image shooting mode is set by 01, the trigger switch 1102 on the switch row 420 is also pressed to
A luminance signal and a color difference signal from the YC signal generation circuit 502 and the color difference signal generation circuit 505 at the time of N are taken in, and still image information is output to 506 according to a control signal from 507. Thereby, the still image shooting mode is realized.

When the trigger switch 1102 is not pressed in the moving image shooting mode or in the still image shooting mode,
And 505 as it is.

When the video-integrated camera has both a moving image photographing function and a still image photographing function, it is conceivable to provide two trigger switches independently for moving images and still images. From the viewpoints of miniaturization, cost reduction, and easy operability, a single trigger switch as shown in FIG. 11 is designed to be used for both moving image shooting and still image shooting.

Next, the negative / positive inversion function will be described.
A negative / positive inversion circuit 513 is inserted in front of the image memory 511. The negative / positive inverting circuit inverts YH, RY, and BY, respectively. The configuration is shown in FIG. In FIG. 7, Y
As for H, the bright portion of the input luminance signal is inverted to a dark portion, and the dark portion is inverted to a bright portion. That is, for example, by subtracting the absolute value of the luminance signal within the range of the 100% white luminance level from the input black level black level as the 701 from the 100% white luminance level as in 701, for example, the 100% white light / dark level The inverted luminance component is extracted.

In 703, the RY signal is applied to the RY signal.
At 705, the BY signal is inverted in the reverse direction on the BY axis. As described above, it is possible to convert a negative image into a positive image by inverting the luminance signal and the color difference signal.

The switches 702, 704, and 706 operate in conjunction with the negative / positive inversion ON / OFF signal 512, respectively.
When the switch is ON, the inverted signal is output from the negative / positive inverting circuit 513 when the switch is OFF.

The negative / positive inversion ON / OFF signal is output from the camera control circuit 507. Whether or not to perform the negative / positive reversal is determined by the operator using the switch 1103 in the switch row 420.
Can be selected using. This information is
3, system controller 419, communication line 422, lens / camera control circuit 4
4 and 5, the signal is transmitted to the camera control circuit 407 via the communication line 421, and the camera control circuit outputs a negative / positive inversion ON / OFF signal based on this information.

Next, the configuration of the first embodiment of the present invention will be described. Although the above-described system does not include the automatic negative / positive detection function and manually switches the negative / positive state, in the first embodiment of the present invention, this is realized by the configuration shown in FIG. Necessary processing such as switching of the switching mode is automated.

The feature of the present embodiment lies in the configuration inside the camera signal processing circuit 409, which is shown in FIG.

FIG. 1 shows a camera control circuit 507 different from FIG.
Only the peripheral portion of FIG. 5 is extracted, and the other configuration and the connection destination of each block in FIG.

In this embodiment, a camera control circuit
A microcomputer is used as 105, and further functions are added to the above-described system.

Since the camera signal control circuit 105 is a microcomputer, the RY and BY signals output from the color difference signal generation circuit 505 are converted into digital signals by A / D converters 101 and 102. A means for converting and inputting the converted data to the camera control circuit 105 is employed.

The outputs of the A / D converters 101 and 102 are connected to terminals 106 and 1
07 are input to the camera control circuit 105, and are used to control the gain control circuits 503 and 504 for the R and B signals described with reference to FIG.

On the other hand, the outputs of the A / D converters 101 and 102 are also input to integrators 103 and 104, respectively, and the integrated results are input to terminals 108 and 109 to 105, respectively.

R-Y when the transmitted light of the color negative film illuminated by a predetermined backlight is photographed by a video camera and the color difference signal is integrated by the integrators 103 and 104 in FIG.
The relationship between the component and the BY component is represented as a color difference vector in FIG.
Are substantially distributed in a range indicated by an area 201 in the color difference vector coordinate system of FIG.

Therefore, in order to detect that a negative film is being photographed, each color difference component signal input from the terminals 108 and 109 is observed by the camera control circuit 105, and the RY component is within the judgment range 202. It suffices that the condition exists and that the BY component is within the determination range 203.

FIG. 3 is a flowchart for detecting the attachment of the film adapter in the camera control circuit 105 and automatically shifting to the still image shooting mode.

When the execution of the process is started in step 301, it is determined in step 302 whether the RY signal input from the integrator 104 via the terminal 109 is within the determination range 202. If it is out of 202, the image memory 511 is set to the through state by setting the apparatus to the moving image mode in step 306, and the negative / positive inversion circuit 513 of the negative / inverting Turn off the inversion operation.

If it is within the RY determination range 202 in step 302, the integrator 103 sends the signal from the integrator 103 to the terminal 108 in step 303.
It is determined whether or not the BY signal input through is within the determination range 203.
The process proceeds to 306.

If it is determined in step 303 that the image is within the determination range 202, the apparatus is set to a still image photographing mode in step 304, and when the trigger is turned on, the apparatus waits for a still image to be taken into the image memory 511. The negative / positive inversion operation of the negative / positive inversion circuit 513 is performed by the control signal 512 from the camera control circuit 507 so that the
Set to N. That is, when it is detected that the negative film is being imaged, the mode can be automatically set to the still image shooting mode. In this embodiment, since this case means that the film adapter is attached,
The camera enters the film shooting mode.

By configuring and controlling the circuit as described above,
Even if the operator does not select `` operation of the negative / positive inversion function '' by using the switch 1103 in the switch array 420, the apparatus is automatically shifted to the film photographing mode only when the negative film is photographed, and A video-integrated camera can be configured so that the negative / positive reversal function operates.

Therefore, for example, when a moving image mode is set immediately after shooting a normal video, even if a negative film image is taken and taken, no complicated operation is required, and the mode can be smoothly shifted to the photographic film taking mode only by attaching a film adapter. I can do it.

The method of automatically determining a negative film as described above is not limited, but is disclosed in Japanese Patent Application Laid-Open Nos. 61-218268 and 62-10967 by the same applicant as the present invention. There are other ways.

(Second Embodiment) FIG. 12 shows a camera signal processing circuit 409 according to a second embodiment showing the features of the present invention.
10 is a flowchart of processing in the camera control circuit 105 in FIG. 9, in addition to the determination conditions of the first embodiment, a lens in an in-focus state of an imaging surface when an object at an extremely close distance described in FIG. The position is added as a determination condition.

In the flowchart of FIG.
When the process is started in step 1201, it is determined in step 1202 whether or not the variable power lens is within the range of the wide area 902 in FIG. The processing shifts to steps 1208 and 1209 to set the apparatus so that a general subject is photographed in the moving image mode, and the negative / positive inversion function is also turned off.

In step 1202, the position of the variable power lens is set to the area 902.
If it is within the range, it is determined in step 1203 whether or not the focus compensating lens position is within a range closer to the curve 904 (the position condition of the focus compensating lens changes depending on the zoom lens position). If it is outside, the process of step 1205 is executed as described above.

If the focus compensating lens position is within the range of 1203 in FIG. 9 in step 1203, the state of the RY and BY color difference signals is determined in steps 1204 and 1205 as in the first embodiment. When the color difference vector is within the range of 201, it is determined that the film adapter is attached and the photographic film is being photographed, and in steps 1206 and 1207, the apparatus is set to the still image photographing mode, and then the negative / positive inversion is performed. Turn the function ON. As a result, the image captured in the image memory 511 is displayed in the still image shooting mode. When the negative / positive reversal function is turned on, a film shooting mode is set.

As described above, by adding the state of the lens system as a determination condition, it becomes possible to clearly determine that a negative film is being photographed at a short distance, that is, using a film adapter, so that a malfunction may occur. Instead, it is possible to automatically execute switching to the still image shooting mode and the negative film shooting mode.

According to the above configuration, when the film adapter is attached, the apparatus is automatically shifted to the still image photographing mode, that is, the negative film photographing mode. However, it is possible to prevent an erroneous operation of forgetting the operation and taking a negative film into a personal computer in the moving image mode.

(Third Embodiment) FIG. 13 is a flowchart of processing in a camera control circuit in a camera signal processing circuit according to a third embodiment of the present invention. FIG. FIG. 5 shows a schematic configuration in the camera signal processing circuit.

In this embodiment, there is no automatic identification means for negative / positive film photographing as in the first and second embodiments, and the operator simply operates the negative / positive reversing function switch 1103 in the switch array 420. Then, when the negative / positive inversion function is turned on, the apparatus is automatically shifted to the still image mode.

This case can be realized by changing the processing in the camera control circuit 105 in the camera signal processing circuit 409, and the schematic configuration of the entire apparatus is as shown in FIG. The schematic configuration inside the signal processing circuit 409 is the same as that shown in FIG.

In FIG. 13, when the execution of the process is started in step 1301, it is checked in step 1302 whether the operator has turned on the negative / positive inversion function. The ON information of the negative / positive inversion function is provided by the communication lines 422 and 423 as described above.

If it is determined in step 1302 that the negative / positive inversion function is ON, the apparatus is set to the still image mode in steps 1303 and 1304, and then the signal line 512 is sent to the negative / positive inversion circuit 512 in order to turn on the negative / positive inversion function. To output a negative / positive inversion ON signal via the. As a result, it is possible to display or record an image obtained by converting a negative film into a positive one.

At step 1302, the negative / positive inversion function
If it is determined to be F, after setting the apparatus to the moving image mode in steps 1305 and 1306, a negative / positive inversion OFF signal is output to the negative / positive inversion circuit 512 via the signal line 512 to turn off the negative / positive inversion function, Thus, a normal moving image shooting operation is performed.

With the above configuration, even if the apparatus does not have the function of automatically discriminating the negative film photographing, the apparatus is automatically shifted to the still image mode when the negative / positive reversal function is ON. In addition to the reduced operation, it is possible to prevent an erroneous operation in which the operator forgets the operation and loads the negative film into the personal computer in the moving image mode.

(Fourth Embodiment) This embodiment has a still image shooting mode and a moving image shooting mode, and includes two modes of a continuous shooting mode and a single shooting mode in the still image shooting mode.
For those having a mode.

In such a device, the operator switches the photographing mode according to the purpose at that time.

The main purpose of continuous shooting is to avoid missing a shooting opportunity when capturing a moving subject as a still image. When taking a still image of a negative film using a film adapter or the like, the subject is a complete still image integral with the camera. You will shoot many pictures.

That is, if the user forgets to confirm the mode and switch operation to always set the camera to the single shooting mode, as described above, the same still image is unnecessarily photographed.

Therefore, in the present embodiment, when a film image is captured by a camera, the apparatus is automatically shifted to a still image single shooting mode to eliminate the above inconvenience and solve the above problem. And

FIG. 14 is a block diagram showing a fourth embodiment of the present invention. 4, the same components as those in the block diagram of FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, the difference from the configuration of FIG.
The video signal output from the camera signal processing circuit 409 is amplified by an amplifier 424, and the amplified video signal is transmitted through an LCD (liquid crystal) display circuit 425.
The image is displayed on a CD (liquid crystal display) 426. This allows the operator to monitor the image being taken. This liquid crystal display may be an electronic viewfinder or a large liquid crystal monitor.

Further, from the system controller 419, various display data including the photographing mode is supplied to the character generator 427, and characters or markings corresponding to the various display contents are displayed on the LCD display circuit 42.
7 and is superimposed on the video signal supplied from the camera signal processing circuit 409 and displayed on the LCD 426.

Here, the still image capturing function described above will be described in further detail. As an advanced type of the still image capturing mode, a plurality of frames are continuously captured by a single trigger operation at a predetermined time interval by one trigger operation. You can improve the continuous shooting function.

This continuous shooting function can shoot several still images at a time for a moving subject, so that it is not necessary to carefully aim for a momentary shooting opportunity, and one good image can be obtained from a series of still images. Can be selected, which is an important function in a camera having a still image shooting mode.

As represented by a video signal recording on a magnetic tape by the helical scan method, in the case of a video integrated camera, a recording head scans a recording medium at high speed to record video information, and The recording width in the longitudinal direction of the magnetic tape for one field or one frame that is established as a still image is extremely small.

That is, even when a still image is continuously recorded at a predetermined time interval, the feed amount in the longitudinal direction of the magnetic tape is extremely small, and the mechanism for shooting a moving image can be used as it is. Even in comparison with the size of a film feeder for continuous shooting of a camera, continuous shooting of still images can be said to be a function for a video-integrated camera.

FIGS. 15 and 1 show an example of an operation method for continuous shooting.
6 will be described.

FIG. 15 shows a specific example of the switch array 420 in the block diagram of FIG. 14. In FIG. 15, the switch 1501 is moved to the position for photographing a still image,
When the negative / positive inversion is selected in 03, the subject image 1602 is displayed in the viewfinder or monitor of the apparatus as shown in FIG.
A display 1604 indicating the negative / positive reversal mode together with the trigger 16
02, a display 1603 indicating a mode for continuously photographing a predetermined number of still images at predetermined time intervals by one operation is displayed.

When a moving image is selected by the switch 1501, the content of 1606 is displayed at the position of 1603.

Next, the characteristic portions of the fourth embodiment will be described. Also in the present embodiment, the actual processing is performed by the camera control circuit in the camera signal processing circuit 409 in FIG. 15, and the configuration of that part is the same as the configuration in FIGS. 1 and 5 in the first embodiment. Therefore, the description is omitted, and the internal processing is described with reference to the flowchart of FIG.

FIG. 17 shows a process for detecting film shooting in the camera control circuit 105 and automatically shifting to the still image single shooting mode in the present embodiment.

When the execution of the process is started in step 1701, it is determined in step 1702 whether or not the RY signal input from the integrator 104 via the terminal 109 is within the determination range 202. If it is outside 202, the image memory 511 is set to the through state by setting the apparatus to the moving image mode in step 1706, and the negative / positive inversion circuit 513 is supplied by the control signal 512 from the camera control circuit 507 so that the negative / positive inversion is not performed in the processing in step 1707. Turn off the inversion operation.

In step 1702, the RY determination range 202
In step 1703, the integrator 103 outputs
It is determined whether or not the BY signal input via 08 is within the determination range 203. If the BY signal is outside the determination range, the process similarly proceeds to step 1706 to set the moving image shooting mode.

If it is within the judgment range 202 in step 1703, the apparatus is set to the still image photographing mode in step 1704, and when the trigger is turned on, the apparatus stands by to take in a still image in the image memory 511, and in step 1705 Thus, the shooting mode is forcibly set to the single shooting mode regardless of the shooting mode up to now.

When the trigger is turned on, the control waits for a still image to be taken into the image memory, and proceeds to step 1708 to control the control signal 512 from the camera control circuit 507 so as to execute negative / positive inversion. Accordingly, the negative / positive inversion operation of the negative / positive inversion circuit 513 is turned ON.

That is, when it is detected that a negative film is being picked up, the mode can be automatically set to the still image shooting mode and the single shooting mode can be set.

In this embodiment, in this case, it means that the film adapter is attached, so that the mode is the film photographing mode.

By configuring and controlling the circuit as described above,
Even if the operator does not select `` still image single shooting mode '' one by one using the switch 1603 in the switch array 420, the apparatus is automatically shifted to the film shooting mode only when shooting negative film, In addition, a video-integrated camera can be configured so that the negative / positive inversion function operates.

Therefore, for example, when a moving image mode is set immediately after a normal video shooting operation, even when a negative film image is taken and taken, no complicated operation is required, and only by attaching a film adapter, it is possible to smoothly shift to the photographic film taking mode. I can do it.

Although the above-described method of automatically discriminating a negative film is not limited, it is disclosed in Japanese Patent Application Laid-Open Nos. 61-218268 and 62-10967 by the same applicant as the present invention. There are other ways.

(Fifth Embodiment) FIG. 18 is a flowchart of processing in a camera control circuit 105 in a camera signal processing circuit 409 according to a fifth embodiment showing the features of the present invention. In addition to the determination conditions of the embodiment, a lens position in an in-focus state of an imaging surface when a subject at an extremely short distance described in FIG. 9 is captured is added as a determination condition.

In the flowchart of FIG.
When the execution of the process is started in 1801, it is determined in step 1802 whether or not the variable power lens is within the range of the wide area 902 in FIG. 9, and if it is out of the range, similar to the fourth embodiment, The processing shifts to step 1809 to set the apparatus so that a general subject is photographed in the moving image mode. At step 1810, the negative / positive inversion function is turned off.

In step 1802, the position of the zoom lens is set to the area 902.
If it is within the range, it is determined in step 1803 whether or not the focus compensating lens position is within a range closer to the curve 904 (the position condition of the focus compensating lens changes depending on the zoom lens position). If it is outside, the processes of steps 1809 and 1810 are executed as described above.

If the focus compensating lens position is within the range of 903 in FIG. 9 in step 1803, the state of the RY and BY color difference signals is determined in steps 1804 and 1805, as in the previous embodiment. If the color difference vector is out of the range of 201, no film is shot and
The processing of 1809 and 1810 is executed.

In steps 1804 and 1805, RY and BY are obtained.
The state of the color difference signal is detected, and when the color difference vector is within the range of 201, it is determined that the film adapter is attached and the photographic film is being photographed, and steps 1806, 180
7. After executing the processing of 1808 and forcibly setting the apparatus to the still image single shooting mode, the negative / positive inversion function is turned on.

As a result, the still image shooting mode and the single shooting mode are set, and one still image is taken into the image memory 511 and displayed on the display unit in response to the ON of the trigger. Further, it can be output to the outside and further recorded on a recording medium such as a magnetic tape (not shown). When the negative / positive reversal function is turned on, a film shooting mode is set.

As described above, by adding the state of the lens system as a determination condition, it is possible to clearly determine that a negative film is being photographed at a short distance, that is, using a film adapter, so that a malfunction may occur. In addition, it is possible to automatically execute the switching between the still image single shooting mode and the negative film shooting mode.

According to the above configuration, when the film adapter is attached, the apparatus is automatically shifted to the still image photographing mode, that is, the negative film photographing mode. However, it is possible to prevent an erroneous operation of forgetting the operation and taking a negative film into a personal computer in the moving image mode.

(Sixth Embodiment) FIG. 19 is a flowchart of processing in a camera control circuit 105 in a camera signal processing circuit 409 according to a sixth embodiment of the present invention.

In this embodiment, there is no automatic identification means for negative / positive film photographing as in the first and second embodiments, and the operator simply switches the negative / positive inversion function in the switch array 420 shown in FIG. When the switch 1603 is operated to turn on the negative / positive inversion function, the apparatus is automatically shifted to the still image single shooting mode.

In this case, the processing can be realized by changing the processing in the camera control circuit 105 in the camera signal processing circuit 409. The schematic configuration of the entire apparatus is as shown in FIG. The schematic configuration inside the signal processing circuit 409 is the same as that shown in FIG.

In FIG. 19, when execution of the process is started in step 1901, it is checked in step 1902 whether or not the operator has turned on the negative / positive inversion function. As described above, the ON information of the negative / positive inversion function is transmitted through the communication lines 422 and 423.
Has been brought by

If it is determined in step 1902 that the negative / positive inversion function is ON, the apparatus is set to the still image mode in steps 1903 and 1904, and the negative / positive inversion circuit 512 is turned on in step 1905 to turn on the negative / positive inversion function. Signal line 512
To output a negative / positive inversion ON signal via the.

As a result, an image obtained by converting a negative film into a positive one can be captured, displayed or recorded by single-shot shooting of a still image.

At step 1902, the negative / positive inversion function
If it is determined to be F, after setting the apparatus to the moving image mode in steps 1906 and 1907, a negative / positive inversion OFF signal is output to the negative / positive inversion circuit 512 via the signal line 512 to turn off the negative / positive inversion function. Thus, a normal moving image shooting operation is performed.

With the above configuration, even if the apparatus does not have a function of automatically discriminating the negative film shooting, the apparatus automatically shifts to the still image mode when the negative / positive reversal function is in the ON state. In addition to the reduced operation, it is possible to prevent an erroneous operation in which the operator forgets the operation and loads the negative film into the personal computer in the moving image mode.

(Seventh Embodiment) This embodiment is an apparatus for converting a projection image such as a negative film or a slide film into a video signal by an imaging device, recording it on a magnetic tape or the like, or outputting it to a monitor. In a photo video camera system, when film is actually photographed using a film adapter or the like, a sudden change in a video signal (a change in the level of the video signal) that occurs when the film moves (moves to another frame) is minimized. It is intended to provide a photo video camera system characterized in that it is minimized.

In such a system, a film is set on a film carrier or the like, the film carrier and the imaging device are fixed by a film carrier holder or the like, and the film set on the film carrier is irradiated from behind with a backlight. A device for taking an image of the projected image with an optical lens and a solid-state image sensor mounted on the imaging device, converting the image signal into a video signal by a signal processing circuit, and outputting the image signal. It has a function of inverting the video signal at the time of image pickup from negative to positive.

In general, the above-described image pickup apparatus has an exposure control circuit for keeping an object to be imaged (for example, a negative film) at an appropriate brightness, and the brightness of the object changes. In the case, by the exposure control circuit,
Electronic shutter speed of image sensor, iris, AGC, Y
-Exposure control is performed by controlling gain and the like, and operation is performed so that an appropriate video signal level is always obtained.

However, when moving from one frame on the film to another frame, if the brightness between frames (no signal portion) is significantly different from the previous imaged screen (frame before movement), the exposure control circuit Due to the overcorrection, the brightness is large and changes abruptly for a certain period, and a very poor quality video is displayed on the monitor. Further, there is a problem that a considerable amount of unnecessary time is wasted until a stable appropriate exposure level is obtained by overcorrection for the subject after the movement.

Therefore, in the present embodiment, compared with the case of normal photographing in which the brightness of the subject changes moment by moment, the film speed is compared with the response speed of the exposure control circuit required to obtain an appropriate exposure. At the time of imaging, the change in brightness of the object to be imaged occurs only when moving the film,
Since the response speed of the exposure control circuit does not seem unnatural even if it is sufficiently slow compared to the case where a normal subject is imaged, when shooting a film, the film shooting mode switch and the film automatic discrimination function By providing such a function, it is possible to detect film shooting, and when film shooting is detected, the response speed of the exposure control circuit is set sufficiently lower than the normal response speed, It is an object of the present invention to minimize a sudden change in brightness of a screen on a monitor having poor quality that occurs when the film is moved, and to shorten a time required to obtain an appropriate exposure after the film is moved.

FIG. 20 is a block diagram showing the configuration of the photo video camera system of the present embodiment.

In the figure, 2001 is a backlight unit for illuminating a negative film from behind, 2002 is a film holder for fixing the film to a film carrier holder described later, and 2003 is for holding the film and mounting it on an imaging device. 2004, an imaging lens, 2005, an iris for adjusting the amount of incident light, 2006, an imaging device such as a CCD, 2007, double correlation sampling for reducing accumulated electrification noise in the output g of the imaging device 2005 Circuit (CDS circuit), 2008 is an AGC circuit for adjusting the gain of the image signal, and 2009 is the AGC circuit 20.
A to convert the imaging signal output from 08 to a digital signal
A / D converter 2010 is a camera signal processing circuit that converts the output signal of the A / D converter 2009 into a video signal, and 2011 divides an imaging screen into a plurality of screens and extracts an image signal corresponding to an arbitrary area. In order to gate the image signal output from the AGC circuit 2008, a gate circuit 2012 integrates an image signal corresponding to a designated area on the selected image screen by the gate circuit 2012, and obtains an average light amount. 2013 is a system control circuit (including an exposure control circuit) composed of a microcomputer that controls the entire system, 2014 is a negative film mode switch, and 2016 is an iris control output from the system control circuit 2014. D / A converter that converts digital signals for use to analog signals, 2017 is an iris drive circuit that drives an iris motor, described later, 2018 An iris encoder composed of a Hall element or the like that detects an aperture of the iris, that is, an aperture value, 2019 is an iris motor that drives the iris, and 2015 is a digital signal that can process the output of the iris encoder 2018 by the system control circuit 2013. An A / D converter 2021 converts a digital signal for AGC control output from the system control circuit 2014 into an analog signal.
A / A converter 2022 is an image memory device for storing and outputting the digital signal from the signal processing circuit 2010 according to a control signal from the system control circuit 2014, and 2023 is an image memory device for storing and outputting the digital signal from the image memory device 2022. This is a D / A converter for converting a digital signal output into an analog signal.

In the above configuration, the means for controlling the exposure includes the iris 2005 and the AGC circuit 2008.
It is performed by two kinds of control means.

The photo video camera system according to the present invention has the above-described configuration, and the specific operation will be described below.

The light emitted from the backlight unit 2001 irradiates one frame of the film, and the light passes through the imaging lens 2004 of the imaging device, is photoelectrically converted by the imaging device 2006, and is converted to an appropriate level by the AGC circuit 2008. After being amplified to a video signal by the signal processing circuit 2010, the
The signal is converted into an analog signal by the D / A converter 2023 via the signal 22 and output.

At this time, in the configuration described above, the means for performing exposure control is such that the image pickup signal output from the AGC circuit 2008 is integrated by the gate circuit 2012, and is integrated into the exposure control circuit configured in the system control circuit 2014. Ingest,
The iris 2005 and the AGC circuit 20 are controlled so that the input signal level matches a predetermined level set in the exposure control circuit.
08 is controlled by the system control circuit 2014.

Further, the integrator 2012 can be configured using software or hardware or both, but has a configuration in which the integration time can be arbitrarily varied.

Therefore, when the system control circuit 2014 detects that film is being picked up by the film shooting mode changeover switch 2015, it is generated from the five vertical synchronizing signals (VD pulses) input to the system control circuit 2014. A reset pulse for controlling the integration time of the integrator is output from the VD
The reset pulse output for each pulse is changed to VD
The reset pulse is output once when the pulse is input three times, and the integration time of the integrator is lengthened, so that even when the image signal level greatly changes instantaneously (when the film moves), the integration pulse is output. The output of the exposure control circuit does not change because the output of the exposure control circuit hardly changes following the signal level input to the system control circuit 2014. Overresponse of the iris 2005 controlled by the camera can be suppressed, and unsightly and unsightly brightness changes on the monitor can be minimized.

FIGS. 22A and 22B show the output of the integrator in each of these photographing modes. FIG. 22A shows the normal photographing mode, and FIG. 22B shows the film photographing mode.

In the normal photographing mode, the integration operation of the integrator is performed for each VD pulse, and the exposure control is performed in the cycle of the VD pulse. In the film photographing mode, the reset pulse of the integrator is changed to the VD pulse. For three times the cycle,
It can be seen that the reset is performed every 3 V, and the integration time constant is tripled. This prevents a sudden change in exposure due to film advance.

At this time, the timing of the reset pulse is
It can be arbitrarily changed as necessary by setting the counter.

FIG. 21 is a flowchart for explaining the operation for controlling the integration time of the integrator. These processes are executed in the microcomputer 2113.

The processing of this flowchart shows the integration time of the integrator for the operation when the film mode SW is pressed.

First, in step 2101, it is determined whether or not the vertical synchronizing signal pulse (VD pulse) is at the Hi level (the VD pulse may be low active depending on the system).

Next, in step 2102, the position of the film mode changeover switch is selected between a normal photographing mode and a film photographing mode. Count 3 times).

Until the designated number is reached, VD
The VD counter that counts the pulses is counted up, and the process proceeds to step 2108 to output the current integrated output voltage value without changing the output data.

If the VD counter has reached the designated number (3) in step 2103, the process proceeds to step 2105, where VD
The counter is reset to 0, and the data of the integrator is read in step 2106.

In step 2107, the read data is divided by the specified number of times to perform an operation to generate voltage output data. After that, exposure control is performed by the same processing as in normal shooting.

If it is determined in step 2102 that the film shooting mode is not set and the normal shooting mode is set,
Proceeding directly to step 2106, the AE integrated value is detected, the driver drive voltage is calculated and output (step 2106).
107, 2108).

As described above, when the film photographing mode is set, the integral value for exposure control is not updated for a predetermined period, and as a result, the integral time constant is increased. In addition, poor quality images such as a sudden change in brightness on the monitor can be minimized, and proper exposure can be promptly obtained even after the frame is moved.

[0145]

As described above, according to the first aspect of the present invention, it is possible to switch between a moving image shooting mode and a still image shooting mode,
In an imaging apparatus having a plurality of color signal generation units, the used luminance signal generation unit and the color signal generation unit automatically switch between the moving image shooting mode and the still image shooting mode. The photographing mode can be automatically set according to the state of the signal processing circuit, which is effective in preventing malfunction and improving operability.

For example, when shooting a negative film with a video camera, the video camera can be automatically set to the still image shooting mode by turning on the negative / positive reversal function of the video camera, thereby reducing the troublesome operation. When,
It is possible to avoid shooting unnecessary scenes in the moving image mode due to erroneous operation.

According to the second aspect of the present invention, the luminance signal and the color signal processing circuit are automatically switched based on the color signal component in the image pickup signal. If
The luminance signal component and the chrominance signal component are each converted to a positive image, and the shooting mode can be switched to a still image shooting mode suitable for film shooting.

For example, a characteristic color difference vector of a negative film is detected by applying a white balance circuit which is a technique unique to a video camera, and the setting of the apparatus to a film photographing mode and the ON of the negative / positive inversion function are automatically performed. By executing, it is possible to reduce the trouble and the possibility of an erroneous operation that the operator sets the negative / positive inversion mode and then shifts the apparatus to the still image shooting mode.

According to the third aspect of the present invention, since the lens position information is used for setting the photographing mode, the automatic setting of the film photographing mode and the still image photographing mode can be performed with higher precision and accuracy. Can be.

According to the invention described in claim 4 of the present application, with respect to still image shooting, a single shooting mode and a continuous shooting mode are provided, and a plurality of luminance signal generating means and a plurality of color signal generating means are provided. In the imaging device having
Since the used luminance signal generation means and color signal generation means automatically control the switching and prohibition between the still image single shooting mode and the still image continuous shooting mode, the signal processing circuit Can automatically set the photographing mode in accordance with the state of, which is effective in preventing malfunction and improving operability.

For example, when taking a negative film with a video camera, turning on the negative / positive inversion function of the video camera prohibits the setting of the continuous shooting mode of the still image shooting mode and automatically sets the single shooting mode. It can prevent unnecessary operation such as continuous shooting of the same film image beforehand, can automatically set the video camera, reduce the complexity of operation, and the movie mode due to erroneous operation It is possible to avoid shooting unnecessary scenes in the camera.

According to the fifth aspect of the present invention, the luminance signal and the color signal processing circuit are automatically switched based on the color signal component in the image pickup signal. If
The luminance signal component and the chrominance signal component are each converted to a positive image, and the shooting mode can be switched to a still image single shooting mode suitable for film shooting.

For example, a characteristic color difference vector of a negative film is detected by applying a white balance circuit which is a technique unique to a video camera, and the apparatus is set to a film photographing mode and the negative / positive inversion function is automatically turned on. By executing this, it is possible to reduce the inconvenience and the possibility of an erroneous operation in which the operator sets the negative / positive inversion mode and then shifts the apparatus to the still image single shooting mode.

According to the invention described in claim 6 of the present application, since the lens position information is further used for the photographing mode setting, the automatic setting of the film photographing mode and the still image single photographing mode can be performed with higher precision and accuracy. It can be carried out.

According to the invention described in claim 7 of the present application, at the time of the negative / positive reversal, the switching to the still image continuous shooting mode is prohibited, so that the operator sets the negative / positive reversal mode. In addition, the trouble of shifting the apparatus to the still image single shooting mode and the possibility of erroneous operation can be reduced.

According to the invention described in claim 8 of the present application, by automatically detecting that a negative film is being photographed, the negative-positive inverting means is operated to perform the negative-positive inversion, and the single-shot still image photographing is performed. Mode, and all operations for prohibiting switching to the still image continuous shooting mode can be automated.

According to the ninth aspect of the present invention, since the lens position information is used for setting the photographing mode, the automatic setting of the film photographing mode and the still image single photographing mode can be performed with higher precision and accuracy. It can be carried out.

According to the tenth aspect of the present invention, the response characteristic of the exposure control means is changed between the normal photographing mode and the film photographing mode. The photographing state can be obtained.

According to the eleventh aspect of the present invention, the exposure control means includes an integrator for integrating the luminance level over a predetermined period, and when the film photographing mode is selected, the integration time constant of the integrator is set. Is designed to increase the
There is an effect that the exposure state is not greatly changed and the quality of the image is not degraded, and the exposure state can be quickly set even after the movement of the frame of the film.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a circuit configuration common to each embodiment of an imaging apparatus according to the present invention.

FIG. 2 is a diagram illustrating the principle of an automatic negative / positive determination operation.

FIG. 3 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 4 is a block diagram for explaining a circuit configuration of a video camera (video integrated camera) to which the present invention is applied.

FIG. 5 is a block diagram showing a configuration of a camera signal processing circuit in the system of FIG.

FIG. 6 is a diagram for explaining a difference in color difference signal coordinates between a negative film and a positive film.

FIG. 7 is a diagram showing an internal configuration of a negative-positive inversion circuit.

FIG. 8 is a diagram showing a structure of an inner focus type lens.

FIG. 9 is a diagram illustrating characteristics of an inner focus type lens.

FIG. 10 is a diagram showing the configuration of a system in which a film image obtained by attaching a film adapter to a video integrated camera is taken into a personal computer.

FIG. 11 is a diagram illustrating an example of a switch array including various switches provided in the video integrated camera.

FIG. 12 is a flowchart showing a second embodiment of the present invention.

FIG. 13 is a flowchart showing a third embodiment of the present invention.

FIG. 14 is a block diagram illustrating a circuit configuration of a video camera (video-integrated camera) according to a fourth embodiment of the present invention.

FIG. 15 is a diagram illustrating an example of a switch array including various switches provided in a video integrated camera according to a fifth embodiment of the present invention.

FIG. 16 is a diagram illustrating a screen display example of a video-integrated camera according to a fifth embodiment of the present invention.

FIG. 17 is a flowchart showing a fifth embodiment of the present invention.

FIG. 18 is a flowchart showing a fifth embodiment of the present invention.

FIG. 19 is a flowchart showing a sixth embodiment of the present invention.

FIG. 20 is a block diagram illustrating a circuit configuration of a video camera (video integrated camera) according to a seventh embodiment of the present invention.

FIG. 21 is a flowchart showing a seventh embodiment of the present invention.

FIG. 22 is a timing chart according to the seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film 3 Film adapter 4 Video camera 5 Personal computer 105 Camera control circuit 407 Image sensor 409 Camera signal processing circuit 419 System controller (syscon) 420 Switch row 501 Imaging optical system 502 YC signal generation circuit 505 Color signal generation circuit 511 Image memory 513 Negative / positive inversion circuit 507 Camera control circuit

Claims (11)

[Claims] An imaging device capable of switching between a moving image shooting mode and a still image shooting mode, comprising: an imaging unit that photoelectrically converts a subject image formed via an imaging optical system and outputs an imaging signal. A first luminance component generation unit that generates a luminance signal component from the imaging signal; a first color component generation unit that generates a color component from the imaging signal; and a bright part according to a luminance level of the imaging signal. A second luminance component generation unit that generates a luminance component in which a dark portion is inverted, a second color component generation unit that generates a color component by a predetermined conversion method according to a color component of the imaging signal, In the case where a video signal is generated using output signals of the second luminance component generation unit and the second color component generation unit, the video signal can be switched between a moving image shooting mode and a still image shooting mode. Switch to image shooting mode And a control means for changing the image pickup device. 2. The image processing apparatus according to claim 1, further comprising: a color identification unit configured to identify a color of the subject in accordance with a color component in the image signal, wherein the control unit generates the video signal. Whether to use the output of the luminance signal generating means and the first color component generating means, or to use the second luminance signal generating means and the second color signal generating means, based on the output of the color discriminating means. And when the video signal is generated using the output signal of the second luminance component generation means and the output signal of the second color component generation means, the mode is switched to the still image shooting mode. An imaging device, comprising: 3. An imaging optical system according to claim 1, further comprising: an imaging optical system in which a position of a lens changes according to a subject distance; and a position detection unit that detects a position of the lens. When detecting that the lens is at a predetermined position and generating a video signal using the output signals of the second luminance component generation unit and the second color component generation unit, the mode is set to the still image shooting mode. An imaging apparatus characterized by being configured to forcibly switch. 4. An image pickup means for photoelectrically converting an optical image formed via an image pickup optical system to output an image pickup signal, and generating a luminance component of the video signal according to a luminance level of the image pickup signal. 1 luminance component generating means, first color component generating means for generating a color component of the video signal according to the color component of the image signal, and a bright portion and a dark portion respectively according to the luminance level of the image signal. A second luminance component generation unit that generates a luminance component of the inverted video signal; and a second color that generates a color component of the video signal by a predetermined conversion method according to a color component of the imaging signal. A component generation unit, and a switchable mode between a still image single shooting mode for shooting a single still image and a still image continuous shooting mode for continuously shooting the still images, wherein the second luminance component generation unit And the second color component generation means When generating a video signal using a force signal, an imaging apparatus characterized by and a control means for inhibiting said still image continuous shooting mode. 5. The image processing apparatus according to claim 4, further comprising: a color identification unit configured to identify a color of the subject in accordance with a color component in the image signal, wherein the control unit generates the video signal. Whether to use the output of the luminance signal generating means and the first color component generating means, or to use the second luminance signal generating means and the second color signal generating means, based on the output of the color discriminating means. When the video signal is generated using the output signal of the second luminance component generation means and the output signal of the second color component generation means, the mode is switched to the still image single shooting mode, and the An imaging apparatus configured to prohibit switching to a continuous shooting mode. 6. The imaging device according to claim 4, further comprising: an imaging optical system in which a position of a lens changes according to a subject distance; and a position detection unit that detects the position of the lens. When detecting that the lens is at a predetermined position and generating a video signal using output signals of the second luminance component generation unit and the second color component generation unit, the still image single shooting An imaging apparatus configured to forcibly switch to a mode and prohibit switching to the still image continuous shooting mode. 7. An image pickup means for photoelectrically converting an optical image formed through an image pickup optical system to output an image pickup signal, and a negative / positive inversion means for performing predetermined processing on a luminance signal and a color signal to perform negative / positive inversion. Can switch between a still image single shooting mode for shooting a single still image and a still image continuous shooting mode for continuously shooting the still images, and when the negative / positive reversing means operates, the still image An imaging apparatus comprising: control means for prohibiting switching to a continuous shooting mode. 8. The negative film according to claim 7, further comprising: color identification means for detecting that a negative film is being photographed in accordance with a color component in the image signal. If it is detected that is being taken,
An imaging apparatus configured to operate the negative / positive inverting unit to perform negative / positive inversion, switch to the still image single shooting mode, and prohibit switching to the still image continuous shooting mode. . 9. The imaging device according to claim 8, further comprising: an imaging optical system in which a position of a lens changes according to a subject distance; and a position detection unit that detects a position of the lens. When it is detected that the lens is at a predetermined position and that the color discriminating means detects that the negative film is being photographed, the negative-positive reversing means is operated to perform negative-positive reversal. An imaging apparatus configured to switch to the still image single shooting mode and prohibit switching to the still image continuous shooting mode. 10. An image pickup apparatus having a normal photographing mode and a film photographing mode for photographing a film or the like, comprising: an image pickup means; and extracting a predetermined signal component from an image pickup signal output from the image pickup means. An image pickup apparatus, comprising: an exposure control unit that performs exposure control by using the control unit; and a control unit that changes a response characteristic of the exposure control unit between the normal shooting mode and the film shooting mode. 11. The apparatus according to claim 10, wherein the predetermined signal component is a luminance signal level, the exposure control means includes an integrator for integrating the luminance level over a predetermined period, and the control means includes: An imaging apparatus characterized in that when a mode is selected, an integration time constant of the integrator is increased.