JP2002152588A - Camera system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera system by which silver-salt photographing can be synchronized with electronic photographing and the interlocking with a stroboscopic light be realized without incorrect photographing timing even if a CMOS image sensor is used in a camera for both silver-salt photographing and electronic photographing. SOLUTION: In this camera system, an object image is exposed on a silver- salt film (9), the object image on an area sensor (23) is recorded as a digital data, then an electronic photographing condition is determined, and a silver-salt photographing is synchronized with the electronic photographing. When a shutter is triggered, a silver salt standby time is determined depending on the electronic photographing condition, and after the completion of preparation of photographing, a preparation completion signal is outputted. When the silver salt standby time is passed, photographing is started using the preparation completion signal as a reference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver image pickup device having an area sensor for recording a subject image as electronic data and a silver halide image pickup device for transferring the subject image to a silver halide film. The present invention relates to a camera system for a salt imaging and electronic imaging camera.

[0002]

2. Description of the Related Art Hitherto, various companies have proposed a camera system in which silver halide imaging and electronic imaging are performed in synchronization.

For example, Japanese Patent Application Laid-Open No. Hei 8-223460 proposes a system using a CCD as a sensor of an electronic camera unit, which can perform batch exposure and easily change the exposure time.

In this example, the concept of synchronizing the exposure timing of the silver halide camera with the vertical synchronization signal of the electronic camera has been proposed as a prior art. Interline type CC
This is a synchronization for performing flash emission during the second field readout period in which flash emission can be performed when flash emission is performed in D.

[0005]

As described above, in the prior art, the exposure timings of silver halide imaging and electronic imaging are made to coincide with high accuracy by using a normal image sensor by any of the methods shown in the same example. I can't do things. In a camera system that performs silver halide imaging and electronic imaging in synchronization, it is important that the exposure timings of both captured images match. Conventionally, C as proposed
CDs are special and increase costs. Furthermore, it is not possible to strictly synchronize the silver halide imaging and the electronic imaging in imaging. Also, as an area sensor, a CM with low power consumption
An OS image sensor is attracting attention, and application of the sensor to a silver halide photography and electronic imaging camera is being studied.

A CMOS image sensor generally outputs data in an XY address system, and performs sequential exposure with a different exposure time for each pixel. Therefore, unlike a normal CCD, batch exposure cannot be performed, and the timing of strobe light emission is limited to the V blanking period. As a result, the interlock between the area sensor and the strobe becomes difficult, and the camera has not been used for a silver halide photography and electronic imaging camera.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a method for synchronizing silver halide imaging and electronic imaging in a case where a CMOS image sensor is used for a camera for both silver halide photography and electronic imaging, and the imaging timing is shifted. Another object of the present invention is to provide a camera system capable of interlocking with a strobe.

[0008]

A camera system according to the present invention comprises: a silver halide imaging means for exposing a subject image to a silver halide film; an electronic imaging means for recording a subject image on an area sensor as digital data; Electronic imaging condition determining means for determining an electronic imaging condition that is an imaging condition of the electronic imaging means from an imaging condition of the salt imaging means, so that the silver halide imaging means and the electronic imaging means can perform imaging in synchronization with each other. In the camera system configured, at the time of shutter trigger, means for determining the silver halide waiting time according to the electronic imaging conditions,
A means for outputting a preparation completion signal to the electronic imaging means after completion of imaging preparation, and a means for starting an imaging operation when the silver halide waiting time has elapsed after the output of the preparation completion signal; The electronic imaging means includes means for starting an imaging operation based on the electronic imaging condition and based on the preparation completion signal.

The electronic imaging means has a driving means for driving the area sensor, and the area sensor is driven by a driving signal from the driving means. The drive state of the area sensor is changed by a drive signal.

The area sensor includes a start means for controlling a timing of starting an exposure operation of the area sensor itself. When a shutter is triggered, the electronic imaging means drives the start means based on the preparation completion signal. And instructing the area sensor to start exposure.

The silver halide waiting time is set so that the center of the electronic exposure period from the start to the end of the exposure of the electronic imaging means coincides with the center of the silver halide exposure period from the start to the end of the exposure of the silver halide imaging means. Is set.

Further, the silver halide imaging means has strobe means, and the strobe means emits light during a period in which all pixels of the area sensor are in an exposure state.
The silver salt waiting time is set.

Further, the silver halide imaging means includes a strobe means, and when there is no period in which all the pixels in the area sensor are in an exposure state, the emission of the strobe means is performed at a time other than the photographing period of the area sensor. The waiting time is set as described above.

Further, in a camera system in which an electronic camera function is added to a silver halide camera, means for temporarily stopping the operation of the silver halide camera unit after completion of preparation for imaging by the silver halide camera unit at the time of imaging, and A means for starting an image pickup operation of the image pickup device of the camera unit; and a unit for calculating an operation timing of the image pickup device and restarting the image pickup operation of the silver halide camera unit. A camera system for performing simultaneous imaging of a camera unit.

In the camera system of the present invention, normally, the shutter trigger operation of the silver halide imaging means is started after the trigger button is depressed, and after performing processing such as AE / AF, the shutter unit is opened and closed, and the film is opened. Exposure to is ended.

In the present invention, the shutter trigger operation is started after the trigger button is depressed, and after performing processing such as AE / AF, the silver halide waiting time is set from the imaging conditions of the electronic imaging means, and the shutter unit is opened and closed. Immediately before the start of the operation, after the preparation completion signal is sent to the electronic imaging means, the operation is temporarily stopped. Thereafter, after the elapse of the silver salt waiting time, the opening / closing operation of the shutter unit is started, and the exposure to the film is completed.

On the electronic imaging means side, the exposure operation of the area sensor is started with the sent preparation completion signal as a starting point, and after a predetermined time, the exposure operation of the area sensor is performed.

Further, in the camera system of the present invention, some area sensors input a timing signal for driving the sensor from outside.

When this type of area sensor is used, the operation of the drive circuit for driving the area sensor is returned to the initial state by the preparation completion signal and restarted, so that the driving of the area sensor is performed up to the previous operation. Start from a given state irrespective of the state. This allows
The area sensor starts exposure after a predetermined time from the preparation completion signal, and as a result, it becomes possible to synchronize the imaging time with the silver halide imaging means.

In the camera system of the present invention, the CM
Some OS sensors have a drive circuit for the light receiving unit on the same chip as the light receiving unit, and receive a shutter operation start signal instructing the start of the imaging operation of the CMOS sensor from an external circuit.

When the area sensor of this type is also chilled, the shutter operation start signal is output from an external circuit with reference to the preparation completion signal, so that the area sensor can be exposed regardless of the previous operation state. The operation starts.

According to the above method, the area sensor starts exposure after a predetermined time from the preparation completion signal. Therefore, the silver halide imaging means adjusts the operation timing based on the silver halide waiting time in accordance with the predetermined time, so that the imaging times of the electronic imaging means and the silver halide imaging means can be synchronized.

In the camera system of the present invention, the exposure time of the silver halide imaging means and the electronic imaging means varies depending on factors such as film sensitivity and aperture. Therefore, it is difficult to exactly match the two. Therefore, by adjusting the silver halide waiting time so that the center times of the two exposures coincide with each other, the imaging time of the central portion of the imaging screen is made equal. As a result, it is possible to perform imaging in which the exposure timing of the central portion of the screen with a high degree of attention is adjusted.

In the camera system of the present invention, the CM
In the OS type area sensor, all pixels are in the exposure state only during the V blanking period when the area sensor is in the full frame exposure state. When a strobe is used and the area sensor is in the full frame exposure state, the strobe light is adjusted to all pixels in the area sensor by adjusting the silver halide waiting time so that the strobe light is emitted during the V blanking period. Since the light is received, it is possible to perform imaging without unevenness in light amount by the electronic imaging unit.

In the camera system of the present invention, the CM
In the OS type area sensor, all pixels are in the exposure state only during the V blanking period when the area sensor is in the full frame exposure state.

When the light quantity of the object to be imaged is large, if the area sensor is set to the full frame exposure state, the appropriate light quantity will be exceeded. However, when strobe light emission is performed in the electronic shutter exposure state, strobe light is received only in some pixels, and image unevenness occurs.

For this reason, in the electronic shutter exposure state, the silver halide waiting time is adjusted so that the image capturing operation of the silver halide imaging unit with strobe light emission is performed at the time when the electronic imaging unit is not capturing an image. Can perform imaging without light quantity unevenness.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

First, a first embodiment of the present invention will be described.

The first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is an overall configuration diagram of a first embodiment of the present invention. A photographic lens for forming a subject image on the silver halide film 9 includes a positive lens 1 and a negative lens 3, and an aperture mechanism 2 is disposed between the photographic lenses. The drive of the aperture mechanism 2 is controlled by an aperture drive circuit 11. A movable mirror 5 is provided behind the negative lens 3.

Each of the lenses 1 and 3 of the photographing lens has a zoom drive circuit 10 for controlling a drive source for a zooming operation.
Is provided. The zoom drive circuit 10 has an encoder (not shown) that generates a signal in accordance with the movement of the photographing lens, and the CPU 18 performs zooming based on the encoder output. An optical finder 6 is provided on the reflection optical path of the movable mirror 5, and a camera operator can take a picture while looking through the optical finder 6.

The above-mentioned movable mirror 5 is a mirror driving circuit 12
, And the shutter 7 is driven by a shutter drive circuit 13. When the movable mirror 5 is raised and the shutter 7 is opened, a subject image is formed on the silver halide film 9 and is exposed. When the movable mirror 5 is raised, the mirror detection switch 4 is turned on,
The mirror up signal 20 changes from the HI level to the LO level (falls). The mirror up signal 20 is
The signal is output from the mirror detection switch 4 to the mirror driving circuit 12 and the electronic camera signal processing circuit 28.

Next, a shutter button 19 for instructing a shutter timing is connected to the CPU 18. The CPU 18, the main memory 15, the shutter drive circuit 13, the mirror drive circuit 12, the aperture drive circuit 11, and the zoom drive circuit 10 are connected by a data bus 14 to exchange data. The operation of these drive circuits is controlled by the CPU 18. A serial communication line 2 is connected between the electronic camera signal processing circuit 28 and the CPU 18.
It is connected by 1, and the transmission of the set value of the silver halide camera unit,
An operation instruction is issued to the electronic camera unit.

Further, a strobe 16 is provided in the silver halide camera section.
And a flash control circuit 17 are provided.
The mirror driving circuit 12, the shutter driving circuit 13, and the flash control circuit 17 work together in response to a command from 8 to perform flash shooting. The flash image pickup timing is determined by a front curtain switch 8 attached to the shutter 7.

The front curtain switch 8 is turned on when the traveling of the front curtain of the shutter 7 is completed and the shutter 7 is opened, and sends a signal to the strobe control circuit 17 to cause strobe light emission.

In the electronic camera section, the imaging lens 22
The image of the subject that has passed through is formed on the area sensor 23. The area sensor 23 converts the formed subject image into an electric signal, digitizes the electric signal, and outputs the digitized image data to the electronic camera signal processing circuit 28. In addition to this electronic camera signal processing circuit 28, an image memory 27, a color liquid crystal monitor (hereinafter, referred to as LCD) 29, the above-mentioned mirror up signal 20, and the serial communication line 21 are connected.
The electronic camera signal processing circuit 28 includes an area sensor 23
Is stored in the image memory 27, read out again, and displayed on the LCD 29.

Next, FIG. 2 shows an electronic camera signal processing circuit 2.
8 is a configuration diagram for explaining the details of FIG.

As shown in FIG. 2, the area sensor 23
The drive signal 25 (HD, VD,
CLK). Writing to a register in the area sensor 23 that controls the operation of the area sensor 23 is performed from the communication I / F-a 31 via the serial communication path 26. Image data from the area sensor 23 and timing signals (H_BL, V_BL, C_CLK) 2
4 is applied to the image signal processing circuit 33 and subjected to processing such as white balance processing and color conversion, and then stored in the image memory 27 via the internal bus 38. At this time, the memory I
The writing control to the image memory 27 is controlled by F37. The image data stored in the image memory 27 passes through the LCD-IF 36 and is displayed on the LCD 29. Also, the electronic camera CPU 32 communicates with the communication I / F-b
The camera 35 is connected to the CPU 18 of the silver halide camera through 35. Also, the mirror-up signal 20 via the I / O circuit 34
Is entered.

Next, referring to FIG. 3, the pixel configuration of the area sensor 23, the V_BL signal, the H_BL signal, the VD signal, and the HD signal will be described.
The signal will be described.

The area sensor 23 includes a sensor driving circuit 30
Is driven based on the drive signal 25 from VD
The signal indicates a reference position for driving in the vertical direction, the HD signal indicates a reference position in the horizontal direction, and the CLK signal is a clock signal serving as a reference for operation inside the area sensor 23. The area sensor 23 has 780 horizontal pixels and 5 vertical pixels.
There are 25 pixels, and the effective pixels used as image data are 648 pixels horizontally and 488 pixels vertically. Further, the area sensor 23 performs sequential scanning in which horizontal scanning is repeated while lowering the vertical position by one pixel from the position of the top pixel at the upper left of FIG. 3 to the position of the last pixel at the lower right. Since the progressive scanning is known, its description is omitted.

During the image data output period, the V_BL signal is at the HI level during the vertical effective pixel output period, and the H_BL signal is at the H level during the horizontal effective pixel output period.
I level. Therefore, the image data when both the V_BL signal and the H_BL signal are at the HI level is fetched as effective image data.

Next, the exposure period of each pixel of the area sensor 23 will be described with reference to FIG.

The area sensor 23 is an XY address type CMOS area sensor. Unlike a CCD type sensor having a batch exposure period, the exposure period differs for each pixel, as shown in FIG. . The exposure state of the area sensor 23 is divided into full frame exposure and electronic shutter exposure. In addition, full frame exposure
Immediately after each of the scanned pixels performs image data output and resets the accumulated charge, each of the pixels starts exposure, and the exposure period of each pixel is substantially one frame period.

In this case, the first pixel is reset immediately after being read out by scanning, and the exposure is started immediately.
The period indicated by the first pixel exposure period-1 is the exposure period. The exposure period of the last pixel is the period indicated by the last pixel exposure period-1 in FIG. Therefore, in the drawing, the exposure period as a sensor for the image data read in the effective image data output period is “2 frame periods−V_BL signal LO period” as shown as a full frame exposure period.
Becomes

In the electronic shutter exposure, after the exposure is completed,
The exposure is started after outputting the image data and resetting the accumulated charges after waiting for a designated time, and the exposure period for each pixel is an arbitrary period of less than one frame.

In this case, after the head pixel is read out by scanning, it is reset after a required lapse of time according to the exposure time.
Since the exposure is started immediately after the reset, the exposure period is as shown in FIG.
In the first pixel exposure period-2. The exposure period of the last pixel is as shown in the last pixel exposure period-2 in FIG. Therefore, the exposure period as a sensor for the image data read in the effective image data output period,
The electronic shutter exposure period is an arbitrary period from one frame period to “two frame periods_V_BL signal LO period” as shown in FIG.

As shown in FIG. 4, in the full frame exposure, all the pixels of the area sensor 23 are in the exposure state during the V blanking period (the period when the V_BL signal is LO). In the case of strobe light emission, in the full frame exposure state, it is necessary to end the light emission in the V blanking period in which all the pixels are in the exposure state. In the electronic shutter exposure state, since all the pixels of the area sensor 23 are not in the exposure state, no matter when the strobe emits light,
Pixels that cannot store the emitted light are formed, resulting in an uneven image.

Next, the operation of the first embodiment of the present invention will be described with reference to the flowcharts of FIGS. 5 to 10 and the timing charts of FIGS.

First, the movement of the silver halide camera unit will be described with reference to FIGS.

FIGS. 5 and 6 show programs of the CPU 18 used for controlling the silver halide camera unit.

As shown in FIG. 5, after the power is turned on, the CPU 1
8 executes a silver halide main routine (S1). After executing the initial processing (S2), the silver halide main routine (S1) waits for an interrupt (S3).
It is in a state of waiting for an interrupt signal generated by pressing down various operation buttons (not shown) and scanning of the silver halide camera unit. If an interrupt occurs and the cause of the interrupt is the depression of the shutter button, the electronic camera unit communicates that the depression of the shutter button has occurred (S5), and then starts the silver halide shutter processing (S6) routine. .

In the silver halide shutter process (S6), the AE
In the / AF process (S12), the aperture value, shutter speed,
Determines whether to use strobe light. Next, it is determined whether or not the electronic flash is used (S13). If the electronic flash is used, the electronic flash unit is set (S14). Then, it is determined whether or not the electronic camera unit is full frame exposure (S15). At the time, Tw time calculation-1 (S16) is performed (Tw:
Wait time). Tw time calculation during electronic shutter exposure -2
(S17) is performed. When the strobe is not used, Tw time calculation-3 (S18) is performed. Details of each Tw time calculation will be described later.

After setting each Tw, various setting values such as the start of the shutter operation of the silver halide camera unit, the exposure time of the silver halide camera unit, and whether or not the strobe is used are determined by the silver halide state communication (S19). Notify the electronic camera unit. further,
After the silver halide state communication (S19), raise the movable mirror 5,
A mirror-up operation instruction (S20) for setting an image-capable state is performed. Then, the mirror-up operation is performed, and it waits until the mirror detection switch 4 is turned on (S21).

Next, when the mirror detection switch 4 is turned on and the mirror up signal 2-0 becomes LO, S16 to S1
During the waiting time (Tw) set in step 8, wait for the Tw time (S
22) is performed, and after waiting for the Tw time (S22), after the front curtain signal output (S23) for instructing the start of the front curtain of the shutter, the rear curtain travel time (Δgf) is subtracted from the exposure time (Tg). Wait for a period of time (S24). Thereafter, a rear curtain drive signal is output (S25).

After the rear curtain drive signal is output, the film feeding process (S26) is executed in preparation for the next photographing, and the process returns to the main routine (S27). In addition, the strobe emits light when the front curtain of the shutter 7 ends, the shutter 7 is opened, and the front curtain switch 8 is turned on (first curtain light emission). Then, in the silver halide main routine (S1), if the cause of the interrupt is not the depression of the shutter button 19 and is related to the setting of the electronic camera unit, for example, the change of the aperture value, the contents of the change are Communication is made to the electronic camera unit (S8).

If the cause of the interrupt is not one of the above, the response to the interrupt is a process that is completed only by the silver halide camera unit, so after executing the predetermined process corresponding to the interrupt, Check that the power off instruction has not been issued (S
9) Return to waiting for interrupt (S3). If an instruction to turn off the power has been issued, a termination process (S10) is performed, and the operation is stopped (S11).

Next, the operation of the electronic camera unit will be described with reference to FIGS. 7 to 10 and FIGS.

First, FIG. 7 shows a main routine (S28) of the electronic camera unit. After turning on the power, initial processing (S
29), the communication task is activated (S30), the external interrupt analysis task is activated (S31), and the shutter task is activated (S3).
2), execute each processing of the miscellaneous processing task activation (S33),
The operation waits for an instruction to end the operation (S34).

During the execution of the electronic camera function, the task (communication task (S37), external interrupt analysis task (S37)
43), the shutter task (S48) and the miscellaneous processing task) are activated in parallel. Each task is executed when it becomes executable from the waiting state. When a plurality of tasks can be executed at the same time, the tasks are executed according to the priority of each task. These execution controls are performed by a management program called an RTOS (real-time OS) not shown.

The miscellaneous processing task is a program that takes charge of electronic camera functions other than a series of image capturing processing described below, and a description thereof is omitted here.

The communication task (S37) is a program for communicating with the silver halide camera unit. After waiting for communication from the silver halide camera unit (S38), the content of the communication is the start of the shutter operation. It is checked whether or not (S39),
When starting the shutter operation, the shutter operation start queue (Q
s), and returns to communication waiting (S38). Here, the queue is a function of the RTOS, and is used for message communication between tasks. For example, when the shutter task (S48) waits for the shutter operation start queue (Qs) (S49), the communication task ( When the shutter operation start queue (Qs) is transmitted from S37), the shutter task (S48) receives the shutter operation start queue (Qs) and waits for the shutter task (S48) (S4).
9) is resolved, and subsequent operations become possible.

If the content of the communication is not the start of the shutter operation, the constant table is rewritten according to the content of the communication (S40), and a table change queue (Qt) indicating that the table has been changed is stored. Send (S4
1), and returns to communication occurrence waiting (S38). The external interrupt analysis task (S43) is a program for analyzing an interrupt to the electronic camera unit. In the embodiment of the present invention, the interrupt is caused by the falling edge of the mirror-up signal 20 from the silver halide camera unit. And the timing signal 2 output from the area sensor 23
4 when the V_BL signal falls. When this interrupt occurs, its cause is analyzed and it is checked whether it is caused by the mirror-up signal (S45).

When the cause is a mirror-up signal,
The mirror up queue (Qm) is transmitted (S46). If the cause is not the mirror-up signal, the interrupt is caused by the V_BL signal, and the V_BL queue (Qv) is transmitted (S47). The shutter task (S <b> 48) is a task that operates in the electronic camera unit at the time of a shutter trigger operation, and captures an image and displays the image on the LCD 29. When the shutter button 19 is depressed, the silver halide shutter processing (S6) is performed in the silver halide main (S1), and the AE / AF processing (S12) is performed as described above, and the setting of the strobe light is performed. Is performed (S14), the state of the silver halide camera unit is notified (S19), and the mirror-up operation is started.

In the electronic camera section, the communication task (S
37), the start of the shutter operation is notified (S3).
9), a shutter start queue (Qs) is transmitted (S4)
2). Then, the shutter task (S48) waits for the shutter start queue (Qs) after startup (S49). When the shutter start queue (Qs) occurs, the shutter task (S48) checks the table change queue (Qt) (S50). . As described above, the table change queue (Qt) is generated each time the constant table is rewritten from the silver halide camera unit, and if there is at least one, it indicates that the contents of the table have been changed. A shutter condition change process (S51) for changing the exposure time of the sensor and the setting of the image signal processing circuit 33 is performed according to the contents of the table. At this time, the previous table change queue (Qt) is all cleared. Then, a new table change queue (Q
The occurrence of t) and the occurrence of the mirror up queue (Qm) are performed.

Then, when the shutter button 19 is pressed to perform mirror up and the mirror detection switch 4 is pressed, the mirror up signal 20 falls as described above,
The mirror up queue (Qm) is sent. Upon receiving the mirror up queue (Qm), the shutter task (S48) checks the mirror up queue (Qm) (S52).
And restart the sensor drive circuit (S53). In the sensor drive circuit restart (S53), the sensor drive circuit 30 is restarted and the area sensor 23 is restarted.
Drive from the beginning. As a result, the area sensor 23 is driven again from the beginning, and after a predetermined time, V_BL
The signal will fall.

Then, the sensor drive circuit is restarted (S5).
3) After that, all V_BL queues (Qv) are completely cleared (S
54) Wait for generation of a new V_BL queue (Qv) (S55). Since the valid image data is output after the second V_BL queue (Qv) after the restart, the generation of the second V_BL queue (Qv) is awaited (S56).
Capture of image data for one screen is started (S5).
7). Thereafter, the image memory 27 of the image data for one screen
It is confirmed that the storage in the LCD has been completed (S58), the fetched image is read from the image memory 27, and the LCD
29 is displayed (S59).

Finally, the mutual timing between the silver halide camera unit and the electronic camera unit is divided into a case where the electronic camera unit performs full frame exposure at the time of strobe light emission, a case where the electronic camera unit performs electronic shutter exposure, and a case where no strobe light emission is performed. Give an explanation.

FIG. 11 is a timing chart in the case where the area sensor performs full frame exposure during flash emission.

FIG. 12 is a timing chart in the case where the area sensor performs electronic shutter exposure during flash emission.

FIG. 13 is a timing chart in the case where the strobe light emission is not performed.

The shutter task (S48, see FIG. 10) does not cause a difference in operation between strobe light emission / non-light emission, full frame exposure / electronic shutter exposure, and is set in the silver halide camera unit. This is handled by changing the waiting time (Tw). Further, in the electronic camera section, when the fall of the mirror-up signal 20 (time point a in FIG. 11) is detected, the area sensor 23 is restarted from the beginning by restarting the sensor drive circuit 30. As a result, the V_BL signal always becomes a certain time after the falling of the mirror-up signal 20 (Δba: restart delay time)
Then, it will stand up.

Since the above operation is performed in the same procedure, the time from the fall of the mirror-up signal 20 to the rise of the V_BL signal is always constant.

First, a case where the electronic camera unit performs full frame exposure at the time of flash emission will be described with reference to FIG.

As shown in FIG. 11, in the silver halide camera section,
The falling of the mirror-up signal 20 is determined by the mirror driving circuit 1
2, the CPU 18 detects, and after the detection, the shutter first curtain is driven after the elapse of a waiting time (Tw) calculated in advance. After driving, when the front curtain is opened, the front curtain switch 8 is turned on, and in synchronization with this, the flash control circuit 17 sends a flash emission signal to the flash 16 to emit light. After the start of driving of the front curtain, the time until the front curtain is fully opened is the front curtain running time (Δed), and the time is constant.

In the waiting time (Tw), the strobe light emission is performed during the V blanking period of the area sensor 23 (FIG. 1).
The calculation is performed by the CPU 18 so as to be performed during the period when the V_BL signal is indicated by the LO level at 1). (S1
6) Here, the calculation method of Tw will be described.

As described above, the strobe light emission is performed during the V blanking period when the area sensor is in the all-pixel exposure state.

As shown in FIG. 11, the light emission timing is
On the basis of the fall of the mirror-up signal, on the silver halide camera side, after the Tw + Δed period, and on the electronic camera side, after the Δba + Tfr−Δji period (Δed: first curtain running time, Δba: restart delay time, Tfr: One frame period (33 ms in the embodiment), Δji: V blanking period.

That is, Tw + Δed = Δba + 2 * Tf
Since r−Δji, Tw = Δba + Tfr−Δji
−Δed (Δba, Tfr, Δji, Δed are fixed times, so Tw in this case is a constant).

Next, a case where the electronic camera section performs an electronic shutter exposure at the time of flash emission will be described with reference to FIG.

As shown in FIG. 12, when the area sensor 23 is performing the electronic shutter exposure,
There is no period during which all the pixels within are exposed. Therefore, in the embodiment of the present invention, the procedure of imaging by the electronic camera unit is not changed, and the flash emission of the silver halide camera unit is performed after the exposure of the electronic camera unit is completed.

Since the operation of the electronic camera section is the same as that of the full frame exposure, the exposure of the area sensor 23 is performed after the mirror-up signal falls and the third V_BL signal as shown in FIG. It ends at the time of falling (h). Since the imaging by the silver halide camera unit is performed immediately after the exposure of the electronic camera unit is completed, Tw is longer than the full frame exposure by one frame period Tw = Δba + 2 * Tfr−Δ
ji-Δed (calculated in S17). (T in this case
w is a fixed value. Finally, a case where no flash light emission is performed will be described.

When the strobe light emission is not performed, the output timing of the shutter tuning signal is determined so that the center time of the exposure period of the film, the center time of the exposure period of the area sensor, and the center time of the exposure period of the area sensor coincide. .

In FIG. 13, the exposure period of the film is
This is a period of g-d from when the shutter first curtain starts opening until when the shutter rear curtain ends closing. Assuming that the exposure time of the film is tg, the central timing of the exposure period of the film is a timing that is Tg / 2 hours after the start timing (d) of the shutter first curtain. In other words, the central period (k) of the film exposure period
Is Tw + Tg / 2 hours after the fall of the mirror-up signal.

The center timing (I) of the exposure period of the area sensor is Te / 2 hours before the end of the exposure, assuming that the exposure time of the area sensor is Te. Since the operation procedure on the electronic camera side is constant, the center timing (I) of the exposure period of the area sensor is Δba after the fall of the mirror-up signal.
+ 2 * Tfr−Δji−Te / 2 hours later.

The waiting time (Tw) at which both center times (k, l) coincide is Tw = Δba + 2 * Tfr−Δji−
(Te + Tg) / 2 (calculated in S18).

As described above, according to the first embodiment of the present invention, by determining the waiting time (Tw) in each case, it is possible to perform imaging corresponding to the difference between strobe light emission / non-light emission, full frame exposure / electronic shutter exposure. By changing the silver halide waiting time, the operation start time of the shutter unit of the silver halide imaging means is changed, and by matching the exposure start time of the area sensor of the electronic imaging means, the exposure timing to the film and the area sensor are changed. Can be matched with the exposure timing. Further, the area sensor starts exposure after a predetermined time from the preparation completion signal, and as a result, it becomes possible to synchronize the imaging time with the silver halide imaging means.

Next, a second embodiment of the present invention will be described.

The second embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG.

FIG. 14 is an overall configuration diagram of the second embodiment.

In FIG. 14, to facilitate understanding, portions having the same functions as those in FIG. 1 which is the overall configuration diagram of the first embodiment of the present invention are given the same numbers.

First, in the second embodiment of the present invention, the area sensor 41 includes an electronic camera signal processing circuit 42.
It is not driven by the drive signal from, but generates a drive signal from a built-in drive circuit and runs on its own. Further, an SHT signal 43 for controlling the start of the imaging operation of the area sensor 41 is output from the electronic camera signal processing circuit 42. Then, the SHT signal 43 is a signal that determines a start timing of the imaging operation by controlling a driving circuit built in the area sensor 41. The area sensor 41
The imaging operation is stopped when the HT signal 43 becomes the LO level, and a new imaging operation is started when the HT signal 43 becomes the HI level.

Therefore, in the second embodiment of the present invention,
As a method for determining the exposure timing of the area sensor 41, as in the first embodiment of the present invention, the area sensor 2
The operation of the drive circuit in the area sensor 41 is changed by the SHT signal 43 instead of changing the drive state of the sensor drive circuit 30 in the external electronic camera signal processing circuit 28.

In FIG. 14, the area sensor 41
Is self-propelled after power on. The image data output from the area sensor 41 and the timing signal 24 for capturing the image data are output to the electronic camera signal processing circuit 42.

Next, FIG. 15 shows the configuration of the electronic camera signal processing circuit 42 according to the second embodiment of the present invention. The electronic camera signal processing circuit 42 is different from the electronic camera signal processing circuit 28 in the first embodiment of the present invention in that the sensor driving circuit 30 for driving the area sensor is omitted. In addition, the SHT signal 43 is output from the electronic camera signal processing circuit 4.
2 is output to the area sensor 41 from the I / O circuit 44.

Next, the operation of the second embodiment of the present invention will be described with reference to the flowcharts of FIGS. 16 and 17 and the timing charts of FIGS.

First, the operation of the silver halide camera will be described with reference to FIG.

The operation of the main routine is the same as described above.

In the shutter trigger processing, in the embodiment of the present invention, the electronic camera unit and the silver halide camera are changed by changing the start time of the shutter operation of the silver halide camera unit according to the operation of the area sensor 41 of the electronic camera unit. Synchronizing with the camera section.

Hereinafter, the shutter trigger operation will be described separately for the case where the strobe light emission is performed and the area sensor performs full frame exposure, the case where the strobe light emission is performed and the area sensor performs the electronic shutter exposure, and the case where no strobe light emission is performed.

In the second embodiment of the present invention, the strobe light is emitted immediately before the start of the rear curtain operation of the shutter (rear curtain emission).

First, a case in which strobe light emission is performed and the sensor performs full frame exposure will be described.

In this case, after moving to the silver halide shutter processing (S60), the silver halide camera section performs the AE / AF processing (S61) 9 to check whether or not the strobe is used (S6).
2). When the strobe is used, after setting the strobe (S63), the imaging condition of the electronic camera unit is obtained from the imaging condition of the silver halide camera unit, and it is determined whether or not the area sensor 41 performs full frame emission (S64). In the case of full frame emission, Tw time calculation-1 (S65) is performed. Waiting time (T
w) The details of the setting will be described later with reference to FIGS.

Thereafter, by silver salt state communication (S68),
After the start of the shutter operation and various setting values of the silver halide camera unit are notified to the electronic camera unit, an execution instruction of the mirror-up operation is performed (S69).

In the mirror-up operation, when the mirror detection switch 4 is turned on, the mirror-up signal goes to the LO level, and the process exits the mirror-up signal check (S70).
The waiting time (T) set in Tw time calculation-1 (S65)
After waiting for w) (S71), a shutter front curtain drive signal output (S72) is executed, and shutter front curtain drive is started.

Thereafter, it is confirmed whether or not a strobe is used (S7).
3) When the strobe is used, wait for a time obtained by subtracting the trailing curtain travel time (Δgf) and the light emission possible period (Δfn) from the exposure time (Tg) (S74), and issue a flash emission instruction to the flash control circuit 40. (S75).

Next, after waiting for a light emission possible period (Δfn) (S76), a rear curtain drive signal output is instructed to the shutter drive circuit 39 (S78).

Finally, the film is fed (S79) in preparation for the next photographing, and the process returns to the main routine (S79).
80).

Next, a case in which electronic flash exposure is performed by performing strobe light emission will be described.

In this case, the process is executed in the same manner as in the case of the full frame exposure, and the Tw time setting-2 (S66) is executed in the judgment (S64) as to whether or not to perform the full frame emission.

Thereafter, as in the case of the full frame exposure, the start of the shutter operation and various setting values of the silver halide camera unit are notified to the electronic camera unit by the silver halide state communication (S68), and then the mirror up operation is performed. An execution instruction (S69) is issued.
When the mirror-up signal goes to the LO level, the process exits the mirror-up signal check (S70), waits for the waiting time (Tw) set in the Tw time calculation-2 (S66) (S71), and starts the shutter first curtain. Drive signal output (S72)
And the shutter curtain drive is started. After that, the processes of S74 to S80 are executed as in the case of the full frame exposure, and the process returns to the main routine.

Here, Tw is calculated so that the strobe is not turned on during the exposure period of the electronic camera unit, and the operation of the silver halide unit is controlled. Therefore, the exposure of the electronic camera unit ends immediately before the flash emission. .

The method of calculating Tw at this time is described in FIG.
9 will be described later.

Finally, a case where no flash light emission is performed will be described.

In this case, the use of the strobe is checked (S6).
In 2), execution of Tw time setting-3 (S67) is selected. In S67, the waiting time (Tw) is set so that the center times of the exposure periods of the electronic camera unit and the silver halide camera unit coincide. (Details will be described with reference to FIG. 20.) Thereafter, silver halide state communication (S68) for notifying the electronic camera unit of various set values of the silver halide camera unit is performed, and a mirror up operation execution instruction (S69) is performed. . When the mirror-up signal reaches the LO level (S70), the Tw time setting-3
After waiting for the waiting time (Tw) set in (S67) (S71), a shutter front curtain drive signal output (S72) is executed, and shutter front curtain drive is started.

Thereafter, it is confirmed whether or not the strobe is used (S7).
3) Since the strobe is not used, wait for the time obtained by subtracting the rear curtain running time (Δgf) from the exposure time (Tg) (S7).
7) Instruct the shutter drive circuit 39 to output a rear curtain drive signal (S78). Finally, a film feeding process (S79) is executed in preparation for the next photographing, and the process returns to the main routine (S80).

Next, the operation of the electronic camera unit will be described with reference to FIG.

The operation of the electronic camera according to the second embodiment of the present invention is different from the first embodiment of the present invention only in the shutter task (S81).

First, the shutter task (S81) waits for a shutter start queue (Qs) (S82).
As in the first embodiment of the present invention, when the shutter operation is notified from the silver halide camera unit, a shutter start queue (Qs) is created in the communication task. When the shutter start queue (Qs) is created, the waiting for the shutter start queue (Qs) (S82) is ended, and the check of the table change queue (Qt) (S83) and the change of the shutter condition (S84) are executed. Is done. After that, the process waits for the mirror up queue (Qm) (S85).

When the mirror-up signal becomes Lo level as a result of the mirror-up operation of the silver halide camera unit, a mirror-up queue (Qm) is created by the external interrupt analysis task. As a result, the mirror up queue (Qm) wait (S85) ends, and the SHT signal output (S86) is executed. In the SHT signal output (S86), the SHT signal 43 output to the area sensor 41 is set to the LO level and then returned to the HI level. The imaging operation of the area sensor 41 is stopped when the SHT signal 43 becomes LO level, and the imaging operation of the area sensor 41 is newly started from the rising point of the SHT signal 43. Since the timing of the imaging operation is determined according to the exposure time set at that time, when the exposure condition on the electronic camera side is determined, the area sensor 4 starts from the rising of the SHT signal 43.
The operation timing of 1 can be calculated.

Then, after all the V_BL queues (Qv) are cleared (S87), the generation of the V_BL queue (Qv) is waited twice (S88, S89).

After the rise of the SHT signal 43, the second V_BL signal becomes the data to be taken in the image data of the effective period after the second fall. Therefore, when the V_BL signal falls twice and the V_BL queue (Qv) occurs twice, the process goes out of the waiting of the V_BL queue (S88, S89) and starts capturing image data for one screen (S88).
90), when the end of image data capture is detected (S9)
1) Display the image taken into the LCD at a predetermined time (S
92).

After the display is completed, the shutter start queue (Q
s) Return to waiting (S82).

Next, the timing will be described with reference to FIGS.

FIG. 18 is a timing chart in the case where the area sensor performs full frame exposure during flash emission.

FIG. 19 is a timing chart when the area sensor performs electronic shutter exposure during flash emission.

FIG. 20 is a timing chart when the strobe light emission is not performed.

First, when the area sensor performs full frame exposure at the time of flash emission, a silver halide shutter process (S60)
In the case of strobe light emission, Tw time calculation-1 (S6
The waiting time (Tw) is set by 5). As described above, the waiting time (Tw) is a waiting time from when the falling of the mirror-up signal is detected to when the driving of the shutter front curtain is started.

The method of calculating Tw at this time will be described with reference to FIG.

First, after the start of the shutter first curtain drive (d),
Strobe light emission is performed when a time obtained by subtracting the rear curtain travel time (Δgf) and the light emission possible period (Δfn) from the exposure period (Tg) has elapsed. The light emission possible period (Δfn) at this time is a fixed period determined to cover the strobe light emission time.

While the strobe light is being emitted, the area sensor 4
1 is a V blanking period (V_B
(The L signal is at the LO level). SHT
When the area sensor 41 is in the full frame exposure state, the operation of the electronic camera unit after the rising of the signal 43 is “sensor exposure delay time” from the rising of the SHT signal 43 until the area sensor 41 starts a new exposure operation. (Δc
o) After the lapse of time, the exposure operation of the area sensor 41 is performed for an “area sensor exposure period” (Te). Te at this time
Since the period is a full frame exposure, as described in FIG. 4, the period is a value obtained by subtracting the V blanking period (Δji: period during which the V_BL signal is at the LO level) from the two frame period (2 * Tfr). Further, the V blanking period is a Δji period after the (Tfr−Δji) period from the start of exposure, and the SH from the fall of the mirror-up signal to the fall of the SHT signal 43 until the rise of the SHT signal.
This is a period obtained by adding the LO level period (Δom) of the SHT signal to the T signal delay time (Δma).

During the strobe light emission period, from the fall of the mirror up signal 20, Tw + Tg-Δgf-Δ
fn, and during the V blanking period, Δma + Δom + Δco + T
e-Tfr. Therefore, the waiting time Tw is set to Tw = Te−Tg−Tfr + Δma + Δom + Δ from the condition that the strobe light emission period and the V blanking period match.
co + Δgf + Δfn.

Further, in the second embodiment of the present invention, one frame period (Tfr) is 33 ms.

According to the above setting, when the electronic camera section is in full frame exposure, as shown in FIG. 18, the image pickup on the silver halide camera side is performed after the waiting time (Tw) elapses after the mirror-up signal becomes LO level. Since the start is performed, the strobe light emission is performed during the V blanking period. In the V_BL period during which strobe light emission is performed, all the pixels are in the exposure state, and the strobe light is evenly applied to all the pixels.

In the case where the electronic camera unit performs the electronic shutter exposure, as shown in FIG. 19, the image pickup on the silver halide camera side takes place after the elapse of the waiting time (Tw) after the mirror-up signal becomes LO level. Start.

At this time, Tw = Te−Tg + Δma + Δ
om + Δco + Δgf + Δfn, and the strobe light is emitted with a delay of one frame period (Tfr) as compared with the full frame exposure. For this reason, since the strobe light is emitted after the exposure period in the electronic camera unit ends, the effect of the strobe light does not appear in the image captured by the electronic camera unit.

When the strobe light emission is not performed, as shown in FIG. 19, the waiting time (Tw) is set so that the center time of the exposure period of the film and the center time of the exposure period of the area sensor coincide with each other. .

In FIG. 20, the exposure period (Tg) of the film is a d-g period from the start of opening of the shutter first curtain to the end of closing of the shutter rear curtain. The center time (k) of the exposure period of the film is a time Tg / 2 hours after the start time (d) of the shutter first curtain. The shutter front curtain start timing (d) is after the elapse of the waiting time (Tw) after the mirror-up signal becomes the LO level. That is, the center time (k) of the film exposure period is k = Tw + Tg /, based on the fall of the mirror-up signal.
It becomes 2.

The center timing (I) of the exposure period of the area sensor is the exposure time (Te) of the area sensor, the SHT signal delay time (Δma) from the fall of the mirror-up signal to the fall of the SHT signal, and , SHT signal L
O-level period (Δom) and “sensor exposure delay time” (Δc) until the area sensor starts a new exposure operation.
o) and I = Δma + Δom + Δco
+ (Te + Tg) / 2.

The waiting time at which both center timings (k, l) coincide is given by the following condition: (k = 1), Tw = Δma + Δom + Δco + (Te−Tg) / 2
: However, Δma, Δom, and Δco are fixed values, and are actually set in the range of Tw = ≧ 0 (when calculation results in a negative value, Tw = 0).

As a result, imaging is performed with the center time of the exposure period of the film and the center time of the exposure period of the area sensor matched.

As described above, according to the second embodiment of the present invention, the silver halide imaging means adjusts the operation timing based on the silver halide waiting time in accordance with the predetermined time, so that the electronic imaging means and the silver halide imaging means can be used. Can be synchronized with each other.
In addition, it is possible to perform imaging in which the exposure timing of the central portion of the screen with a high degree of attention is adjusted. In addition, use a strobe,
When the area sensor is in the full frame exposure state, V
By adjusting the silver halide waiting time so that strobe light emission is performed during the blanking period, strobe light is uniformly received by all pixels in the area sensor. it can. In the electronic shutter exposure state, by adjusting the silver halide waiting time so that the imaging operation of the silver halide imaging unit accompanied by the strobe light emission is performed at the time when the electronic imaging unit is not imaging, the electronic imaging unit has a non-uniform light amount. It is possible to perform imaging without any problem.

[Supplementary Note 1] A silver halide imaging means for exposing a subject image to a silver halide film, an electronic imaging means for recording a subject image on an area sensor as digital data, and an electronic imaging means based on imaging conditions of the silver halide imaging means. An electronic imaging condition determining unit that determines an electronic imaging condition that is an imaging condition of the imaging unit, wherein the silver halide imaging unit and the electronic imaging unit are configured to be able to perform imaging synchronously; Means for determining a silver halide waiting time according to the electronic imaging condition; means for outputting the preparation completion signal to the electronic imaging means after completion of imaging preparation; and outputting the preparation completion signal to the electronic imaging means. Means for starting an imaging operation when the silver halide waiting time has elapsed, and wherein the electronic imaging means performs an imaging operation based on the electronic imaging conditions and based on the preparation completion signal. Camera system characterized by comprising a means for start.

[Supplementary Note 2] The electronic image pickup means has a drive means for driving the area sensor, and the area sensor is driven by a drive signal from the drive means. 2. The camera system according to claim 1, wherein a driving state of the area sensor is changed by the driving signal.

[Supplementary Note 3] The area sensor includes start means for controlling the timing of the start of the exposure operation of the area sensor itself. At the time of a shutter trigger, the electronic imaging means sets the start means based on the preparation completion signal. 2. The camera system according to claim 1, wherein the camera system is driven to instruct the start of exposure to the area sensor.

[Supplementary Note 4] The silver halide waiting time coincides with the center of the electronic exposure period from the start to the end of exposure of the electronic imaging means and the silver halide exposure period from the start to the end of exposure of the silver halide imaging means. 2. The camera system according to claim 1, wherein the camera system is set to perform the following operations.

[Supplementary Note 5] The silver halide imaging means has a strobe means, and the silver halide wait means is set so that light emission of the strobe means is performed during a period in which all pixels of the area sensor are in an exposure state. The camera system according to claim 1, wherein the time is set.

[Supplementary Note 6] The silver halide imaging means includes a strobe means, and when there is no period in which all the pixels in the area sensor are in an exposure state, the emission of the strobe means is not performed during the area sensor's photographing period. 2. The camera system according to claim 1, wherein the silver salt waiting time is set so as to be performed at the time of (1).

[Supplementary Note 7] In a camera system in which an electronic camera function is added to a silver halide camera, means for temporarily stopping the operation of the silver halide camera unit after imaging preparation of the silver halide camera unit is completed at the time of imaging, and A means for simultaneously starting an image pickup operation of an image pickup device of the electronic camera unit; and a unit for calculating operation timing of the image pickup device and restarting the image pickup operation of the silver halide camera unit. A camera system for performing simultaneous imaging of a unit and an electronic camera unit.

[0150]

According to the present invention, it is possible to make the exposure timing of the film coincide with the exposure timing of the area sensor. Further, the area sensor starts exposure after a predetermined time from the preparation completion signal, and as a result, it becomes possible to synchronize the imaging time with the silver halide imaging means.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a signal processing circuit of an electronic camera according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a pixel arrangement in a sensor according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a timing chart of a CMOS sensor exposure period according to the first embodiment of the present invention.

FIG. 5 is a view showing a main routine of a flowchart of the silver halide camera according to the first embodiment of the present invention.

FIG. 6 is a view showing shutter processing of a flowchart of the silver halide camera according to the first embodiment of the present invention.

FIG. 7 is a view showing a main routine of a flowchart of the electronic camera according to the first embodiment of the present invention.

FIG. 8 is a diagram showing a communication task in a flowchart according to the first embodiment of the present invention.

FIG. 9 is a view showing an external interrupt analysis task in a flowchart according to the first embodiment of the present invention.

FIG. 10 is a view showing a shutter task in a flowchart according to the first embodiment of the present invention.

FIG. 11 is a view showing a timing chart at the time of strobe light emission in full frame exposure according to the first embodiment of the present invention.

FIG. 12 is a view showing a timing chart at the time of strobe light emission in electronic shutter exposure according to the first embodiment of the present invention.

FIG. 13 is a view showing a timing chart when strobe light is not emitted according to the first embodiment of the present invention.

FIG. 14 is a diagram showing an overall configuration according to a second embodiment of the present invention.

FIG. 15 is a diagram showing a configuration of a signal processing circuit of an electronic camera according to a second embodiment of the present invention.

FIG. 16 is a view showing a flowchart of shutter processing of the silver halide camera according to the second embodiment of the present invention.

FIG. 17 is a view showing a flowchart of a shutter task according to the second embodiment of the present invention.

FIG. 18 is a diagram showing a timing chart at the time of strobe light emission in full frame exposure according to the second embodiment of the present invention.

FIG. 19 is a view showing a timing chart at the time of strobe light emission in electronic shutter exposure according to the second embodiment of the present invention.

FIG. 20 is a view showing a timing chart when strobe light is not emitted according to the second embodiment of the present invention.

[Explanation of symbols]

4: mirror detection switch, 5: movable mirror, 6: optical finder, 7: shutter, 8: front curtain switch, 10 ...
Zoom drive circuit, 11: aperture drive circuit, 12: mirror drive circuit, 13: shutter drive circuit, 17: flash control circuit, 18: CPU, 23, 41: area sensor, 27
... Image memory, 28 ... Electronic camera signal processing circuit, 29 ...
Color liquid crystal monitor (LCD), 30 ... Sensor drive circuit,
32: electronic camera CPU, 33: image signal processing circuit, 3
9 Shutter drive circuit, 40 Strobe control circuit, 42
… Electronic camera signal processing circuit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) H04N 5/91 H04N 5/91 J 5C053 5/92 5/92 HF term (Reference) 2H054 AA01 BB05 BB07 2H104 AA18 5C022 AA13 AB02 AB12 AB17 AB22 AB36 AC02 AC03 AC22 AC42 AC52 AC54 5C024 AX04 BX01 CX56 CY14 DX01 DX04 EX41 GY31 HX58 HX60 JX11 5C052 AA12 AA17 AB04 AC02 CC02 DD02 EE02 EE03 EA06 FA02 GA01 FA02 FB06 FC02

Claims (3)

[Claims] 1. A silver halide imaging means for exposing a subject image to a silver halide film, an electronic imaging means for recording a subject image on an area sensor as digital data, and an electronic imaging means based on an imaging condition of the silver halide imaging means. An electronic imaging condition determining unit for determining an electronic imaging condition, which is an imaging condition of (i), wherein the silver halide imaging unit and the electronic imaging unit are configured to be able to take an image synchronously. Means for determining a salt waiting time according to the electronic imaging condition, means for the silver halide imaging means to output a preparation completion signal to the electronic imaging means after imaging preparation is completed, and after outputting the preparation completion signal, Means for starting an imaging operation when the silver halide waiting time has elapsed; and the electronic imaging means for starting an imaging operation based on the electronic imaging conditions and based on the preparation completion signal. Camera system comprising: 2. The electronic image pickup device includes a drive unit for driving the area sensor, wherein the area sensor is driven by a drive signal from the drive unit. The camera system according to claim 1, wherein a driving state of the area sensor is changed by a driving signal. 3. The area sensor includes a start unit that controls a timing of starting an exposure operation of the area sensor itself, and when a shutter is triggered, the electronic imaging unit drives the start unit based on the preparation completion signal. And
The camera system according to claim 1, wherein an instruction to start exposure to the area sensor is issued.