JPH07119921B2 - Shooting mode switching device - Google Patents

Description

The present invention relates to a photographing mode switching device used in a camera.

[Prior art]

Since a camera provided with a low-priced lens shutter that is capable of almost automatically performing various adjustments necessary for taking a picture is intended for a beginner, it is desirable to take a picture in a shooting mode with as few failures as possible. However, it is sometimes necessary to perform special shooting, so that various shooting modes can be switched. Examples of shooting modes include normal shooting mode, self-timer mode, flash shooting mode, close-up shooting mode, Fill-i
There are nFlash mode and continuous shooting mode. However, the user may forget to switch the shooting mode and perform shooting, and if such shooting is performed, the shooting may fail.

As a conventional technique for switching the shooting mode, it is proposed to set a setting member in the self-timer shooting mode and automatically return to the normal shooting mode when shooting is completed. Since the device is enlarged because of the use, and the number of kinds of photographing modes is increased, the setting member is required for each, and the device is further enlarged.

The device disclosed in Japanese Patent Laid-Open No. 54-107340 outputs a pulse signal by operating a push button, counts this pulse,
Set the exposure control mode (P, A, S, M) according to the count value. However, this device is switched to the exposure control mode, not the shooting mode. In addition, there is no disclosure of the idea of switching the shooting mode, and there is also no disclosure of switching between the normal shooting mode and other shooting modes.

[Object of the Invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shooting mode switching device which can prevent shooting failure due to an error in mode switching operation in a camera in which various shooting modes can be switched and which can be easily switched.

[Structure of Invention]

A shooting mode switching device according to the present invention is a camera having a plurality of shooting modes including a normal shooting mode, a switch that is operated when setting the shooting mode, and an output that outputs an operation signal according to the operation of the switch. Means, counting means for counting the operation signal, display means for displaying a photographing mode according to the count value of the counting means, designating means for designating a photographing mode according to the count value of the counting means, Limit detection means for detecting that the count value of the count means exceeds the limit, exposure control detection means for detecting that the exposure control is performed by operating the release button, and the count value of the limit detection means exceeds the limit And that the exposure control detection means has performed exposure control by operating the release button. When Kino either is detected, characterized in that the data corresponding to the normal mode instead of the data stored in said counting means and a preset means for presetting the said counting means.

When the shooting mode is set to a mode other than the normal shooting mode by the above configuration, for example, when the release button is operated, the normal shooting mode is automatically set thereafter.

〔Example〕

FIG. 1 is a perspective view showing the external appearance of a camera to which the present invention is applied. The camera uses a lens shutter. 1
Is a release button, and the metering switch is closed in the first step of pressing down the release button 1, the preparatory operation for exposure control is performed, and the release button 1 is pressed down.
At the first stage, the release switch is closed and the exposure control operation is performed. Reference numeral 2 is a liquid crystal display unit, and a specific display example is shown in FIG. Reference numeral 3 denotes a shooting mode setting button (hereinafter referred to as a mode button), and the shooting mode changes each time the mode button 3 is pressed. Reference numeral 4 is a film counter setting button. In this embodiment, since the film counter is an electric film counter, the contents of the film counter will be lost if the power battery is replaced. Therefore, when the battery is replaced, the film counter button 4 can be operated to preset the number of frames to be photographed.

Reference numeral 5 is a viewfinder window, and 6 and 7 are distance detection windows. Reference numeral 8 is a light emitting portion of a flash, 9 is a light receiving portion for automatic exposure control, and 10 is a photographing lens. Reference numeral 12 denotes a lens cover opening / closing member. When the lens cover opening / closing member moves to the right from the illustrated state, the lens cover (not shown) covers the taking lens, and the exposure control operation cannot be performed. Reference numeral 11 denotes a display unit that indicates that the self-timer is operating during self-timer shooting.

FIG. 2 is a specific example of the display unit 2 of FIG. The name of the camera is displayed on the 15th part. In this part, the company name may be displayed. The display unit 15 is displayed only when the lens cover does not cover the taking lens 10. 16,18,20,22,24,26 are parts for displaying the photographing mode. "STANDARD" is a normal mode. When the exposure time based on the photometric value is faster than the constant exposure time, the constant light shooting is performed, and when it is slower than the constant exposure time, the flash shooting is performed. "SELF" is a self-timer mode, the release switch is closed and 10se
When c has elapsed, shoot in normal mode. “CLOSE” indicates a close-up shooting mode, in which the aperture is set to the minimum aperture and flash shooting is performed. "FILL F." is a Fill-in Flash mode, in which shutter (lens shutter) control is performed by constant light, and flash emission is also performed by flashmatic. "CONTI" is a continuous shooting mode, and while the release switch is closed, continuous light shooting is performed even at low speed continuously. In another embodiment, flash photography is performed only when flash photography is possible at low speeds, and release lock is applied when flash photography is not possible. "NON
"F." is a mode in which flash photography is not performed (non-flash mode). In this mode, stationary light photography is performed even at low speeds. The characters indicating these modes are also displayed only when the lens cover does not cover the taking lens. Outer frame of letters indicating each mode 17,19,21,23,2
5,27 are frames showing which mode is selected.
17 in normal mode, 19 in self-timer mode, 21 in close-up shooting mode, 23 in Fill-in Flash mode, 25 in continuous shooting mode, 27 in non-flash mode. The selection of these modes is selected by closing the mode button 3 as described above, and every time the mode button 3 is closed, STANDARD → SELF → CLOSE → FILL F. → CONTI.
→ NON F. → STANDARD → …… Also, 1
When the exposure control operation in one of the modes ends, "STANDARD"
Automatically returns to.

30 is a segment for displaying the ISO speed, and when the ISO speed is read from the film container, it will be displayed along with the display unit 29.
Sensitivity is displayed. On the other hand, when a film container without an ISO sensitivity signal member is installed in the camera, or when the film container is not installed in the camera, ISO1
00 and the symbol "FIX" 28 indicating that the image is fixed are displayed. 35 is a symbol indicating whether or not the film is attached,
This symbol lights when the film is installed and the case back is closed. Further, when the back cover is opened with the film loaded and the back cover is closed again with the film left as it is, this symbol 35 blinks to give a warning. The display units 33 and 34 alternately light up during the film winding to indicate that the film is being wound, and the display units 31 and 32 light up alternately during the film rewinding to rewind the film. Is displayed. 36 and 37 are symbols that display the state of the back cover,
36 lights up when closed and 37 lights up when open. Also, when the rewinding is completed, 36 and 37 are alternately turned on to urge the opening of the case back to take out the film.

Reference numeral 38 is a display unit for displaying the number of photographed frames. If the film is not loaded in the camera, the display will change to "0", and during the preliminary feeding of the film, the display will change to "0" → "-" → "-" → "1". Below, "2" → "3" → ... "10" → "11" → ...
It changes from "38" to "39" and then returns to "1". Also, when the battery is replaced with the film mounted, "00" blinks, and when the film counter setting button 4 is operated, the preset number lights up. Also, when the internal resistance of the battery increases and the open circuit voltage decreases, film winding and boosting of the flash power supply cannot be performed within the predetermined time, the displayed numerical value (number of shooting frames) blinks and the battery Prompt exchange.

FIG. 3 is a diagram showing an overall circuit configuration of a camera to which the present invention is applied. BA is a power supply battery, and power is directly supplied from this battery to the flash circuit FL and the motor control circuit MD through the power supply line + E. Also the power battery
Diode D ₁ in parallel with the BA, are connected in series circuit of a capacitor C ₁ is connected point of the diodes D ₁ and capacitor C ₁ is in the power supply line VD. From this power supply line VD, a microcomputer MC (hereinafter referred to as a microcomputer), an oscillator OS
C, display control circuit DS, film sensitivity reading circuit CA, delay circuits DL ₁ , DL ₂ , one-shot circuits OS ₁ , OS ₂ , OS ₃ , OS
S ₄ , Inverters IN ₁ and IN ₂ , Exclusive OR circuit E
O ₁ , EO ₂ , AND circuit AN ₀ , AN ₂ , OR circuit OR ₁ , NOR circuit NO
Power is also supplied to ₁ . Here, the capacitor C ₁ has a relatively large capacity, and when the power supply battery BA is replaced in a relatively short time, power is supplied from the capacitor C ₁ to the terminal VD. Also, during boosting for flash, it is prevented that the output of the power supply battery BA is lowered and the microcomputer MC becomes inoperable due to a large load.

Transistor BT ₁ is a transistor controlled by the signal at terminal p ₁₇ of the microcomputer MC, the transistors BT ₁
Is turned on, the automatic exposure control circuit EC, the autofocus unit AC, and the light emitting diodes L _{1 to} L ₄ are connected via the power supply line VC.
Power.

The switch S ₀ is a switch interlocking with the lens cover. When the lens cover is open, the switch S ₀ is OFF, and when the lens cover is closed, it is ON. This switch S ₀ is ON
From OFF to OFF or from OFF to ON, delay circuit DL
₁ and the exclusive OR circuit EO ₁ output a “High” pulse and input it to the NOR circuit NO ₁ . The switch BKS is a switch linked to the back cover. It turns on when the back cover is opened and turns off when it is closed. This back cover switch BKS is from ON to OFF
Alternatively, when the delay circuit DL ₂ and the exclusive OR circuit EO ₂ also change from OFF to ON, a “High” pulse is output and input to the NOR circuit NO ₁ . The switch MOS is a switch interlocked with the mode button 3. When the switch MOS is closed, the one-shot circuit OS ₁ outputs a “High” pulse to the NOR circuit NO ₁ .

MRWS is a switch that is closed when manually rewinding the film, and ARWS is a switch that is closed by mechanical clutch switching when the film is stretched during winding and the winding load increases. Is. This switch MRW
One-shot circuit when either S or ARWS is closed
A “High” pulse is output from OS ₂ and sent to the NOR circuit NO ₁ . S ₁ is a photometric switch that is closed in the first step of pressing down the release button 1. By closing this switch S ₁ , the output of the inverter IN ₁ is inverted to “Low”, and this inverter IN ₁ The signal from is input to the interrupt terminal it ₁ . FW
S is a switch that is turned on during the film feeding operation,
A specific example is shown in FIG. The switch LES is a switch that is turned on when the operation of the shooting mechanism (for example, the moving mechanism of the shooting lens) is started, and is turned off when the charging of the shooting mechanism is completed. When either of these two switches is closed, the output of the OR circuit OR ₁ is "High" and the winding operation is continued. Switch FDS ₀ is OF when film is wrapped around the spool (not shown).
The switch that becomes F, FDS ₁ is a switch provided near the film feed rail surface, and is turned off when a film is loaded. Therefore, if it is detected that the film is loaded at any position, the switch FD
Either S ₀ or FDS ₁ is turned off, and the output of AND circuit AN ₂ becomes “Low”. When the film is no longer detected at either position, both switches FDS ₀ and FDS ₁ are turned on, and the output of the AND circuit AN ₂ becomes “High”. This causes the one-shot circuit OS ₃ to output a "High" pulse,
At this time, if the case back is opened, this pulse is output from the AND circuit AN ₀ , and this pulse is input to the NOR circuit NO ₁ . Here, the switch FDS ₀ installed at the spool position can detect the film even if the back cover is opened, but the switch FDS ₁ installed near the rail surface presses the film when the back cover is opened. Since it disappears, the film cannot be detected. Therefore, a switch FDS ₀ for film detection is provided at the spool position. On the other hand, the switch FDS ₁ near the rail surface is provided to detect the leading edge of the film being wound into the film container rather than the position of the switch FDS ₁ at the time of rewinding and stop the rewinding. is there. This switch FDS ₁ no longer detects film
If the rewinding is stopped when it is turned on, the film will not be completely wound into the container, that is, the switch will be in a position where the leading edge of the film will be out of the container for a specified length.
FDS ₁ is provided.

SPS is a switch that turns on and off according to the rotation of a driven sprocket that rotates in tandem with film feed. This switch SPS is a switch for detecting that there is an abnormality in the rewinding of the film if the state does not change during a certain time during the rewinding. The abnormalities at the time of rewinding means that in the case of a hard film, the tip of the film remains bent (curved), so if this bent portion comes near the drive sprocket near the final rewinding position. , The state where the sprocket hole of the film and the teeth of the driving sprocket do not mesh and the film cannot be fed. At this time,
Since the detection switch FDS ₁ near the rail surface detects the film, the rewinding drive is continued and energy is wasted. Therefore, this switch is provided to prevent malfunction when such a special film is attached. Further, it is also provided for detecting whether the internal resistance of the power supply battery BA is increased and the open circuit voltage is lowered, so that a fixed amount of film cannot be fed within a fixed time.

The switch FSS is a switch for indicating the stop position of film winding, and is a switch FW for film feed detection.
A concrete example is shown in FIG. 4 together with S. In FIG. 4, reference numeral 40 denotes a sliding member which rotates in a clockwise direction in association with the winding of the film, and makes one rotation by feeding one frame of the film. The sliding member 40 rotates counterclockwise during rewinding. When the film winding is completed, the sliding member 40 has the circular common pattern 43 and the island-shaped second pattern 42.
Is short-circuited and switch FSS is closed. When the film winding starts, the sliding member 40 disconnects from the second pattern 42 and cuts the common pattern 43 and the gap 41d into a substantially circular first pattern 4
1 and 2 are short-circuited, and the switch FWS is closed. Each of the patterns 41 to 43 is formed of a printed conductor or the like. In this state, when the film winding progresses and the sliding member 40 comes off the first pattern 41 (that is, the switch FWS is turned off).
FF), brake the film feed motor to stop film feed. Here, the film is further rolled up due to the inertia of the winding system from the time when the brake is applied. It changes according to the output. Here, when the internal resistance of the battery is low and the open-circuit voltage is sufficient (when the battery is new), the sliding member 40 moves the second pattern 42 between the time when the brake is applied and the time when the winding actually stops.
If it is designed to move to the position, the sliding member 40 does not move to the position of the second pattern 42 until the film is wound and the film winding is stopped when the output of the battery decreases. This becomes particularly noticeable when the drive voltage width of the motor is widened. Then, the space between the photographed pieces is almost eliminated, and in an extreme case, the pieces overlap. Therefore, in this embodiment, if the sliding member 40 moves to the position of the second pattern 42 after a certain period of time is applied with the brake (switch FSS).
If it is not moving, start the motor again and drive the motor until the sliding member 40 moves to the position of the second pattern 42 (until the switch FSS turns ON). Wind up.

In FIG. 3, a switch S ₂ is a release switch that is closed in the second step of pressing down the release button 1. When the switch S ₂ is closed, the microcomputer MC starts the photographing operation. The switch COS is a switch interlocked with the film counter setting button 4, and turns ON when the film counter setting button 4 is pressed, and the one-shot circuit OS
_A “High” pulse is output from ₄ and sent to the interrupt terminal it ₂ via the inverter IN ₂ .

MO is a motor for film feeding, MD is this motor MO
Control circuit. This control circuit is the terminal p of the microcomputer MC
_The motor MO is controlled according to the signals from ₁₀ and p _11, and the signals from the terminals p ₁₀ and p ₁₁ and the state of the motor MO are as shown in Table 1.

A concrete example of the flash circuit FL is shown in FIG. Fifth
In the figure, when the terminal p ₁₂ becomes "Low" from the microcomputer MC conducting transistor BT ₃₀ is, transistor BT _33, B
The operation of the booster circuit configured by T ₃₆ , the transformer T _{0 and the} like starts, and the output obtained by boosting the output of the power supply battery BA is charged in the main capacitor C ₁₁ . At this time, pin p of microcomputer MC
_{If 13} is "High", the transistors BT ₃₂ and BT ₃₁ become conductive, current flows through the series circuit of resistor R ₅ , Zener diode ZD, transistor BT ₃₁ and resistor R ₈
A voltage corresponding to the charging voltage of the main capacitor C ₁₁ is generated across R ₈ . The inverting input terminal of the comparator AC _10, AC ₂₀ and an output of the constant voltage source ECC, the voltage obtained by dividing a resistor R ₁₀ and R ₁₁ minute output of the constant voltage source ECC is given to the non-inverting input terminal, the resistor The voltage due to R ₈ is applied. Main capacitor C ₁₁ charging progresses and comparator AC ₂₀ output goes “High”
If this is reversed to, the main capacitor C ₁₁ has been charged up to the level at which the guide number that should be guaranteed can be emitted at this time, and when this is detected, the microcomputer MC gives a charge completion indication and the release lock. Make sure that this does not happen (hereinafter referred to as "fill 2 OK".
Even in the state of, boosting is continued and boosting is performed until the output of the comparator AC ₁₀ is inverted to "High". The output of the comparator AC ₁₀ microcomputer MC via a terminal p ₁₄ is "H
"When it is detected that inverted (called a charge completion 1OK in the following), the microcomputer MC terminals p _12" IgH High ", the terminal p _13" L
ow "to stop boosting and stop charge detection. Then, the charge detection circuit becomes inoperable, so the main capacitor C ₁₁ is discharged only by natural discharge and left for a long time. Even the main capacitor
Charging of C ₁₁ is fully charged 2 OK.

When the charge is 2 OK, the microcomputer MC will
Start counting in c). If the charge 1 is not OK within this fixed time, the battery will be exhausted and the output will be insufficient.At this time, boosting and charging detection will be forcibly stopped and the battery will be exhausted. Warn that In addition, constant voltage source ECC, voltage dividing resistors R ₁₀ , R ₁₁ , comparator A
It is desirable that C ₁₀ and AC ₂₀ also be driven by the transistor BT ₃₂ or a transistor provided in parallel with this transistor BT ₃₂ so that the terminal p ₁₃ operates only when the terminal p ₁₃ is “High” in order to save power.

Also, during the exposure control, if the trigger signal TR (“High” pulse) is input from the automatic exposure control circuit EC, the thyristor SC
Is turned on and the charge of the trigger capacitor C ₁₀ is discharged, and the xenon tube Xe is triggered by the trigger transformer T ₂ . As a result, the xenon tube Xe discharges the charge stored in the main capacitor C ₁₁ and emits light.

A concrete example of the display control circuit DS of FIG. 3 is shown in FIG. The display control circuit DS is connected to the light emitting diodes L _{1 to} L ₄ and the liquid crystal display unit LC. The light emitting diode L ₁ is a light emitting diode provided on the self-timer display unit 11, L ₂
Is a green light emitting diode that lights up or blinks during steady light photography. L ₃ and L ₄ are provided in the same package, and L ₄ is a green light emitting diode and L ₃ is a red light emitting diode. L ₄ lights up or blinks when flash photography is performed, and L ₃ blinks when flash photography is required and the state of full 2 OK is not reached. Since L _3, L ₄ are provided in the same package, so as to illuminate the same flash mark. These light emitting diodes L ₂ , L ₃ and L ₄ are displayed in the viewfinder.

FIG. 7 is a view showing what can be seen in the viewfinder.
Reference numeral 51 indicates a field frame, and 52 indicates a distance measuring frame, and the distance measuring frame and the light measuring range of the light receiving section 9 for automatic exposure control are substantially coincident with each other. 53
Is a stationary light photographing display mark displayed by the green light emitting diode L ₂ , and 54 is a flash photographing display mark displayed by the green light emitting diode L ₄ or the red light emitting diode L ₃ .

Next, the display control circuit DS will be described with reference to FIG.
The display control circuit DS reads the data of 4 bytes sent from the microcomputer MC in series, performs a display by the light emitting diode L ₁ ~L ₄ and the liquid crystal on the basis of the read data. The display data in the microcomputer MC is the register DP
R ₀ , DPR ₁ , DPR ₂ and DPR ₃ are set, and this data is output from the serial output terminal SOU. In the serial output operation by the microcomputer MC, the data set in the input / output register IOR is sequentially output from the terminal SOU one bit at a time from the lower bit in synchronization with the rising edge of the clock pulse from the terminal SCK. Further, in the serial output operation, the data input to the serial input terminal SIN is input to the input / output register IOR in synchronization with the rising edge of the clock pulse output from the terminal SCK. Eight clock pulses are output from the terminal SCK by one serial input / output operation.

When the terminal p ₁₆ becomes “High”, the AND circuit AN ₁₅ becomes active, and the AND circuit AN ₁₅ outputs the data from the serial output terminal SOU. Then, in synchronization with the falling edge of the clock pulse from the terminal SCK, the data from the AND circuit AN ₁₅ is sequentially read into the shift register SHR. Then, when the transmission of 4 bytes of data from the microcomputer MC is completed, the terminal p _{16 is set} to “Low”. When this terminal p ₁₆ falls to "Low", the D flip-flops DF ₀ , DF ₁ and AND circuit AN
_The circuit composed of ₁₆ outputs a pulse synchronized with the reference clock STCK, and the data read into the shift register SHR is latched by the latch circuits LA _{0 to} LA ₄ . Since from the microcomputer MC is sent in the order of the register DPR ₀ ~DPR _3, the latch circuit LA ₀ of DPR ₀ content, the LA ₁ low-order 4 bits of DPR _1, the LA ₂ of DPR ₁ Upper 4 bits, DP for LA ₃
The contents of DPR ₃ are latched in R ₂ and LA ₄ , respectively.

Next, Table 2 shows the relationship between the contents of the registers DPR _{0 to} DPR ₃ and the display contents.

Here, for example, bit 5 of register DPR ₀ is indicated by b ₀₅ , and bit 3 of DPR ₂ is indicated by b ₂₃ .

ISO sensitivity is set in the lower 5 bits of the register DPR ₀ , and this data is sent to the segment driver SGC via the segment decoder DE ₁₀ for numerically displaying the ISO sensitivity on the segment display unit 30 of FIG. The upper 3 bits of this register DPR ₀ are extra bits. The display contents of the lower and upper digits of the display section 38 of the film counter are set to the lower and upper four digits of the register DPR ₁ , respectively. Then, the decoders DE ₁₁ and DE _{12 respectively} perform the decoding as shown in Table 2. That is, "0 _H " is blank (all segments are off), "1 _H " is "1", "2 _H " is "2", "3 _H " is "3", and "4 _H " is "4". , "5 _H " for "5", "6 _H " for "6", "7 _H " for "7", "8 _H " for "8", "9 _H " for "9", "A _H "" Means "0" and " _BH " means "-".

When the bit b ₂₀ of the register DPR ₂ is “0”, the output of the NAND circuit NA _{13 in} FIG. 6 remains “High” and the decoder DE
₁₁ and DE ₁₂ continue to output segment data,
The display section 38 for the film counter remains lit.
On the other hand, when the battery is replaced with the film still attached and the film counter is not preset, or when the film is wound up within a certain period of time and the pressure is not increased to warn the power supply battery is exhausted, b ₂₀ is " Therefore, the NAND circuit NA ₁₃ outputs a clock pulse which is the inverted output of the frequency divider DIV. The decoders DE ₁₁ and DE ₁₂ output the data for turning off the film counter display section 38 when the clock pulse is "Low", so that the film counter display section 38 blinks to give a warning. Bit b
₂₁ is "0" if the lens cover is closed, and the camera name display 15 and mode display 16,18,20,22,2
4,26 goes out. On the other hand, if the lens cover is open, it will be “1” and the display section 15,16,18,20,22,24,26 will light up, indicating that the lens cover is open and exposure control operation is possible. To do. This signal also controls the decoder DE ₁₄ , and if it is "1", the signal indicating the mode selection is output from the decoder DE ₁₄ , and if it is "0", the signal indicating the mode selection is not output from the decoder DE ₁₄ . All of the outer frame display parts 17 to 27 are turned off.

Bits b _26, b _23, b ₂₂ of the register DPR ₂ output of the decoder DE ₁₃ and input to the decoder DE ₁₃ is as shown in Table 3.

It should be noted that the microcomputer MC can create only data combinations of the bits b ₂₆ , b ₂₃ , and b ₂₂ shown in Table 3. The data is “11
When it is 1 ", the film rewinding is completed. At this time, the terminals d ₁₂ and d ₁₃ become" High ". First, the output of the OR circuit OR ₂₃ becomes" High "because d ₁₃ becomes" High ". "And the film display unit 35 lights up. Also, when d ₁₂ becomes" High ", the AND circuits AN ₂₅ and AN ₂₆ become active, and the OR circuits OR ₂₁ and OR _22.
Since the "High" signal is output alternately in synchronization with the output of the frequency divider DIV, the back cover display sections 36 and 37 are alternately turned on to urge the user to open the back cover and take out the film. Bit b
_{If 26} , b ₂₃ , and b ₂₂ are “101”, terminals d ₁₃ and d ₁₁ are “High”. In this case, the back cover is closed and the film is loaded, and the outputs of the OR circuits OR ₂₁ and OR ₂₃ become “High”, and the film display symbol 35 and the back cover closed display unit 36 are displayed. Lights up. Decoder DE ₁₃ pin when data is "001"
Only d ₁₁ becomes “High”. This is the case where the back cover is closed without the film attached, and the back cover closed display section 36
Only displayed.

When the back cover of the camera is opened, the data of "010" is sent regardless of whether the mounting of the film is detected or not. As a result, only the terminal d ₁₀ of the decoder DE ₁₃ is "High".
Then, only the back cover opening display portion 37 is turned on. If the mounting of the film is detected with the back cover open, and the back cover is closed without removing the film, the microcomputer MC sends "100" data. In this case, the terminals d ₁₄ and d ₁₁ of the decoder DE ₁₃ become “High”. When the terminal d ₁₁ becomes “High”, the output of the OR circuit OR ₂₁ becomes “High”, and the back cover close display section 36 lights up. Further, when d ₁₄ becomes “High”, the clock pulse from the frequency divider DIV is output via the AND circuit AN ₂₇ and the OR circuit OR ₂₃ , and the film display unit 35 blinks to give a warning.

During winding operation bit b ₂₄ They become "1", the AND circuit AN _23, AN ₂₄ is in the active state. So frequency divider D
AND circuit AN ₂₃ , AN synchronized with the clock pulse from IV
The output of ₂₄ becomes "High" alternately. As a result, the winding display portions 33 and 34 are alternately turned on to indicate that winding is being performed. Bit b ₂₄ except during the winding-up the display unit 33 and 34 wound up in has become a "0" is off. During the rewinding operation, bit b ₂₅ is set to "1" and AND circuits AN ₁₉ and AN ₂₀ become active, so that the outputs of AND circuits AN ₁₉ and AN ₂₀ are It becomes "High" alternately.
As a result, the rewind display sections 31 and 32 alternately light up to indicate that the rewind is in progress. Bit b except during rewind
₂₅ is "0" and the rewind display sections 31 and 32 are off.

The bit b ₂₇ becomes “1” when it is determined that the film container provided with the signal member indicating the ISO sensitivity is mounted on the back cover. As a result, the display unit 29 is turned on to indicate that the ISO sensitivity has been read from the film container. On the other hand, when the back cover is opened, when the back cover is closed but the film container is not attached, or
When the film container not provided signal member indicating the ISO sensitivity is mounted, the bit b ₂₇ becomes "0" output of the next inverter IN ₂₀ is "High". As a result, the display unit 28 lights up, indicating that the ISO sensitivity is fixed.

Bits b ₃₂ , b ₃₁ and b ₃₀ of the register DPR ₃ are data of any of “001” to “110” according to the photographing mode as shown in Table 2. Then, the decoder DE ₁₄ outputs the signals shown in Table 4 according to this data.

As a result, one of the character outer frames 17 to 27 corresponding to the shooting mode lights up to display the exposure control mode.

Bit b ₃₃ during counting of the time of the self-timer self-timer mode (10 sec) is set to "1".
Therefore, during this period, the NAND circuit NA ₁₂ outputs the clock pulse which is the inverted output of the frequency divider DIV and outputs the light emitting diode L ₁
Flashes. Except when the self-timer is counting time
b ₃₃ becomes “0”, the output of the NAND circuit NA ₁₂ remains “High”, and the light emitting diode L ₁ is turned off. Bit b ₃₅ , b
₃₄ is set to “0” when normal light shooting can be performed.
1 "," 10 "when the shutter speed reaches the low speed limit in continuous light photography, and" 00 "when flash photography. Therefore, when _b34 is" 1 ", the output of the NOR circuit NO ₁₂ is" Low "
And the green LED L ₂ lights up. On the other hand, b
Frequency divider output from AND circuit AN ₁₈ when ₃₅ becomes “1”
A clock pulse obtained by inverting the clock pulse from DIV is output from the NOR circuit NO ₁₂ and the green light emitting diode L ₂ blinks.

As shown in Table 2, bits b ₃₇ and b ₃₆ are "11" when normal flash shooting is possible, "01" when flash shooting is possible and the shooting distance is too long, and flash shooting mode is set. 2 If the data is not OK, the data is "10", and in the continuous light shooting mode, the data is "00". Then, the decoder DE ₁₆ outputs the signals shown in Table 5 according to this data.

Therefore, when the terminal d ₄₁ becomes “High”, the output of the NOR circuit NO ₁₁ becomes “Low”, and the green light emitting diode L ₄ lights up.
_{When 42} becomes “High”, the clock pulse from the frequency divider DIV output from the AND circuit AN ₁₇ is inverted by the NOR circuit NO ₁₁ , and in response to this, the green light emitting diode L ₄ blinks to give a warning. .. On the other hand, when the terminal d ₄₀ becomes “High”, the NAND circuit NA ₁₁ outputs a clock pulse that is the inverted clock pulse from the frequency divider DIV, and the red light emitting diode L ₃ blinks to warn that the flash is uncharged. Do. Sixth
In the figure, COC is the liquid crystal LC according to the signal from the divider DIV.
The SGC is a circuit for outputting the common signal of SLC and outputting the segment signal of the liquid crystal LC according to the signal from the frequency divider DIV and the input signal.

In FIG. 3, OSC is an oscillator for generating clock pulses, and the output clock of this oscillator OSC is used as a reference clock STCK for the microcomputer MC and the display control circuit DS.
Input to MC and DS. Auto focus unit (hereinafter referred to as AF circuit) for distance detection and lens control AC starts distance measurement operation when a "High" pulse is input from the terminal p _{26 of the} microcomputer MC, detects the distance to the subject, and stores this At the same time, the detected and stored distance data is output to the exposure control circuit EC. Then, when the release magnet RM becomes conductive, the movement of the lens moving mechanism (not shown) starts (at this time, the switch LES is closed). Then, a pulse is output from the lens pulse output circuit LP as the lens moves,
The AF circuit AC compares the count value of this pulse with the stored distance data. When they match, the magnet AM having a permanent magnet as a core is pulsed to lock the movement of the lens and stop the lens at a position corresponding to the detected distance.

A specific example of the film sensitivity reading circuit CA and the exposure control circuit EC for reading the ISO sensitivity from the film container is shown in FIG. 8, which will be described below with reference to FIG.
The switch group CAS surrounded by the broken line is a group of contacts that read the data from the film container with switches.
The combination of ON and OFF of these switch groups CAS depends on the O sensitivity. Counter CO ₁ has pin p _{18 of} microcomputer MC set to “Hi
gh ", the reset state is released and the rising edge of the clock pulse from the serial clock output terminal SCK is counted. Then, the decoder DE ₁ operates the AND circuits AN _{01 to} AN ₄₁ according to the output of the counter CO ₁ . A signal indicating the state of the switch is sequentially output as the sequentially active state.
The signal indicating the ISO sensitivity that is sequentially output from AN _{01 to} AN ₄₁ is input to the serial input terminal SIN of the microcomputer MC via the OR circuit OR ₅ and read by the microcomputer MC. The part explained above is IS
In the O sensitivity reading circuit CA, this part is supplied with power from the power supply line VD. The remaining part of FIG. 8 is the exposure control circuit EC, and this part is supplied with power from the power supply line Vc.

The ISO sensitivity data from the switch group CAS is DA converter DA
_Although input to ₁ , the ISO sensitivity code is coded such that at least 1 bit of the lower 2 bits is "1". Therefore, the output of the OR circuit is "High" when the ISO sensitivity is read from the film container, and is "Low" when the ISO sensitivity is not read. DA converter DA ₁
Outputs an analog signal corresponding to the 5-bit ISO sensitivity data input from the CAS when the output of the OR circuit OR ₄ is "High", and the fixed ISO if the output of the OR circuit OR ₄ is "Low"
Output an analog signal corresponding to ISO ₁₀₀ sensitivity. Furthermore, the distance data from the switch group CAS, the OR circuit OR ₄ , and the AF circuit AC are also input to the flashmatic decoder DEF. The flashmatic in this embodiment has a fixed flash emission amount, so the distance and IS
The flash is designed to be fired when the aperture becomes appropriate according to the O sensitivity. And
Since the shutter of the camera used in this embodiment is a lens shutter, the time from the start of opening the shutter corresponds to the aperture of the diaphragm. Therefore, the decoder DEF can determine the distance between the camera and the subject and the ISO sensitivity. Output time data. When the output of the OR circuit OR ₄ is "Low", time data corresponding to ISO100 and distance is output. Then, this time data is converted into an analog signal by the DA converter DA ₂ . Incidentally, when the aperture becomes a combination of ISO sensitivity and shooting distance even fire the flash becomes luminous shortage upon the maximum opening, the decoder DEF to the input terminal p ₂₄ of the microcomputer MC of "High" A signal is sent, and a warning (flashing of the light emitting diode L ₄ ) that the amount of light emission is insufficient is issued.

The analog signal indicating the ISO sensitivity from the DA converter DA ₁ is input to the non-inverting input terminal of the operational amplifier OA ₁ for the photometric circuit. Then, the light receiving element PD is connected between both input terminals of the operational amplifier OA ₁ , and the output current of the light receiving element PD is the diode D ₂
The voltage is logarithmically compressed by the voltage, and the output of the operational amplifier OA ₁ is Bv + Sv = Ev. When the power supply line Vc is powered and the photometry circuit stabilizes, and the AF circuit AC has passed enough time to store the distance data, the microcomputer MC turns to the terminal p ₁₉
To “Low”. This causes analog switch AS ₁ to
It becomes FF, and the output of the photometric circuit is stored in the capacitor C ₄ . The constant voltage source EH has the smallest aperture opening Ev in the shortest exposure time.
The voltage corresponding to the value Ev _H is output, and the constant voltage source EL is the Ev value Ev _{L which} is the limit exposure time at which the camera shake occurs at the maximum aperture.
The voltage corresponding to is output. Therefore, the comparator AC ₁ ,
AC ₂ , AND circuit AN ₅₁ output, analog switch AS ₂ ,, A
Relationship S _3, AS ₄ and control Ev value is as shown in Table 6.

The output of the comparator AC ₂ is not input to the terminal p ₂₃ of the microcomputer MC, Ev <when it becomes Ev _L When this pin is "Low" is determined, the normal shooting mode, self-timer mode At the time of, it switches from constant light photography to flash photography. According to the relationship shown in Table 6, the signal of the Ev value output from any of the analog switches AS ₂ , AS ₃ , and AS ₄ is input to the base of the transistor BT ₄ for logarithmic expansion. Also, D-A for adjusting the flash emission timing
The analog signal from converter DA ₂ is input to the base of transistor BT ₉ . When the microcomputer MC determines that it is possible to shift to the exposure control operation by closing the release switch S ₂ , it outputs a “High” pulse to the terminal p ₂₀ to keep the transistor BT ₆ conductive for a certain period of time. Release magnet R
The M is brought into conduction to start the movement of the lens and the exposure control operation. Then, when the opening operation of the shutter starts, the count switch CS is opened and the transistors BT ₁₁ and BT ₁₂ become non-conductive. As a result, the capacitors C ₅ and C ₇ are charged by the collector currents of the transistors BT ₄ and BT ₉ . Then, when the charging voltage of the capacitor C ₅ reaches the output voltage of the constant voltage source EEC, the output of the comparator AC ₃ is inverted to “Low” and the transistor BT ₅ becomes non-conductive, so that the magnet E
M becomes non-conductive and the shutter closes. During flash photography, the microcomputer MC is set to an active state AND circuit AN ₁₅ as a terminal p ₂₁ "High". Then, when the time required to reach the aperture opening for proper exposure by the flash elapses, the output of the comparator AC ₅ becomes “High”, the output of the OR circuit OR ₆ becomes “High”, and the one-shot circuit OS
_A “High” pulse is output from ₈ , and this pulse is sent to the flash circuit FL via the AND circuit AN ₁₅ and the flash emits light. It should be noted that if the shutter closing operation starts before the shutter speed reaches a proper aperture due to flashmatic, that is, the shutter speed is high and the output of AC ₃ is inverted before the comparator AC _5. In this case, when the output of AC ₃ becomes “Low”, the inverter I
The output of N ₂₂ becomes “High”. Then, after the delay time of the delay circuit DL ₆ for correcting the delay of the shutter mechanism, the OR circuit OR ₆ becomes “High”, a pulse is output from the one-shot circuit OS ₈ and the flash is emitted.

In the close-up mode, the microcomputer MC sets the terminal p ₂₂ to “Hig
h ". This makes transistor BT ₈ conductive,
The stretching transistor BT ₄ is deactivated. Further, the transistor BT ₇ is turned on, and the shutter is closed after a time period including the capacitor C ₅ and the resistor R ₀ . This time corresponds to the time required for the minimum aperture opening at the highest shutter speed. And, in this case the terminal p ₂₁ is has become a "High" at the time of the start of the shutter closing operation emits light flash not a必Ra. Therefore,
In this shooting mode, the aperture is narrowed down as much as possible to deepen the depth of focus, and the point where underexposure is insufficient with only stationary light is corrected by emitting a flash. Even if the close-up shooting mode is selected, a subject that is not close may be shot, but in such a case, the probability of underexposure increases. Therefore,
By omitting the terminal p ₂₂ , the transistors BT ₇ and BT ₈ , and the resistor R ₀ , when the close-up shooting mode is selected, set the terminal p ₂₁ to “High” and perform the same control as in the Fill-in Flash shooting mode. Good. In this way, the shutter is controlled by constant light so that the exposure is not underexposed, and when shooting a close subject, the shooting distance obtained with the AF circuit AC is short, so the flash fires at a small aperture. The depth of focus also becomes deeper.

When the closing operation of the shutter starts and a sufficient time has passed for the closing operation to complete completely, the output of the delay circuit DL ₇ becomes “High” and the shutter is closed at the terminal p _{25 of the} microcomputer MC. A signal indicating that this has been done is transmitted. Then, the microcomputer MC
Charges the exposure control mechanism and lens movement mechanism and performs film winding operation.

Next, the microcomputer MC of FIG. 3 will be described. This microcomputer MC is provided with interrupt terminals it ₀ , it ₁ , it ₂ and a reset terminal RES, and the order of priority is RES, it ₀ , it ₁ , it ₂ . Furthermore, a timer for counting the internal clock is provided inside, and when the count value of the timer reaches a preset value, a timer interrupt is taken if the timer interrupt operation is enabled at this point. When each interrupt is applied, the microcomputer MC changes from the power-saving operation stop state to the operation state and operates from the address of the ROM (inside the microcomputer) corresponding to each interrupt. While the interrupt signal is operating, the next interrupt is not accepted unless interrupts are enabled. Just set it. Then, when the microcomputer MC enters the interrupt enable state, the signal corresponding to the interrupt flip-flop that has been set performs the operation corresponding to the interrupt. The interrupt flip-flop is reset when the operation is started. Also, the timer interrupt is accepted only when the timer interrupt is enabled.

9 to 14 are flowcharts showing the operation of the microcomputer MC of FIG. The operation of the embodiment of the present invention will be described below based on this flowchart. First, the operation when the back cover of the camera is closed will be described. When the back cover is closed, the switch BKS is opened, and the interrupt signal is input to the interrupt terminal it ₀ via the exclusive OR circuit EO ₂ and the NOR circuit NO ₁ . Then, the microcomputer MC starts the operation from step # 1 in FIG. In step # 1, the flag CHF,
STF (described later) is reset and the film feed motor MO
To stop the rotation of the motor MO and outputs a pulse of "High" to the terminal p _10, p ₁₁ for when an interrupt is applied in operation to the terminal _{p 12, p 17, p 19} "High" By doing so, boosting is stopped, power supply to the power supply line Vc is stopped, and AE lock is released. Then, p _13, p _20, stopping the charging condition detection of the main capacitor C11 and p ₂₁ as a "Low", the transition to flash disabled state, resetting the release terminal p _20. The above is a preparatory operation for canceling the operation being performed when an interrupt signal is input to the terminal it ₀ for some reason.

When the above preparatory operation is completed, it is determined in step # 5 whether or not the rewind switches ARWS and MRWS are closed. Then, in the case of this description, since these switches are opened, the process proceeds to step # 90 in FIG. In step # 90, it is determined whether or not the back cover is opened. In this case, since the back cover is closed, the process proceeds to step # 92 to determine whether the flag RBF is "0". The flag RBF is a flag that becomes “1” (# 118) when the case back is closed and “0” (# 93) when the case back is opened, and is determined to be “0” in step # 92. By then, the back cover has been opened until then, and this means that the back cover has been closed at this point, and the process proceeds to step # 118. In step # 90, it is determined that the back cover is closed.
If it is determined in step 92 that RBF is "1", it means that the terminal it ₀ was not interrupted by the closing of the back cover, so the process proceeds to step # 190 in Fig. 11. Search for other interrupt cause to pin it ₀ .

In step # 118, set the flag RBF to "1"# 121
Go to step. In the step of # 121, it is determined from the signals of the switches SDF ₀ and SDF ₁ whether or not the film is mounted. If it is mounted, the process proceeds to step # 122, and if not, the process proceeds to step # 127. In step # 127, set “01” to b ₂₃ and b ₂₂ and then b _{27 to} b _24.
Is set to "0001". Therefore, the back cover close display 36, the winding display 33, 34, and the fixed ISO sensitivity display 28 are displayed, and the process proceeds to step # 129. On the other hand, in step # 122, it is determined whether the flag FEF is "1". This flag is set to "1"(# 95) when the back cover is opened with the film still attached. Then, the long flag FEF is a "1" bit b _23, b ₂₂ are '00' b ₂₇ ~b
Set the data of "0101" to ₂₄ , make the back cover closed display 36, the film loading display 35 blink, the winding display 33, 34, and the fixed ISO sensitivity display 28, and proceed to the step of # 129. . If it is determined in step # 122 that the flag FEF is “0”, then in steps # 125 and 126, turn on the condition that the back cover close display 36, film loading display 35, and fixed ISO sensitivity display 28 can be displayed. Go to step 129.

In the step of # 129, the data of "001" is set to the bits b ₃₂ , b ₃₁ , and b ₃₀ to set the normal shooting mode, the normal shooting mode display section 17 is displayed, and b _{37 to} b ₃₃ are set. a state data set the light emitting diode L ₁ ~L ₄ of not light "00000". Then, in step # 132, the flag BAF is set to "0", and the process proceeds to step # 133. Here, the flag BAF is a flag that becomes "1"(# 432) when the power supply battery BA is replaced with the film attached. This is provided to display a warning on the film counter display section 38 when the memory of the count value for the film counter is lost. Therefore, when the back cover is closed from the open state, it is not necessary to give a warning as if the film was replaced, so the flag BAF is "0".
And Step # 133 displays the display data. Display control circuit D
This is a subroutine for transferring to S, and a specific example is # 7 in FIG.
It is shown as the operation from step 5.

In the display data transfer subroutine shown in FIG. 9, first, in step # 75, the terminal p _{16 is set} to "High" so that the display control circuit DS inputs data, and the register D is input to the input / output register IOR.
Set the contents of PR ₀ . Then, serial input / output operation is performed to output this data in series to the display control circuit DS. Similarly, the contents of the registers DPR ₁ , DPR ₂ and DPR ₃ are sequentially sent in series to the display control circuit DS, and the terminal p _{16 is set} to “Low” at the step # 84 to return to the return address.

When the display data transfer subroutine is completed in the step of # 133, the process proceeds to the winding subroutine of # 134. This winding subroutine is shown from step # 165. In step # 165, "1" is set in the flag WF. This flag is a flag that becomes "1" during film winding. Then, 2 sec data is preset in the interrupt timer to enable the timer interrupt. Then, "High" terminals p ₁₀ in step # 168 to start the winding of the film by the motor MO as a p ₁₁ "Low". Then, in step # 169, the film feed switch FWS is turned on.
Wait for. During this time, the film is pushed and the switch ARWS is closed, or the rewind switch MR is manually operated.
In step # 170, it is determined whether the WS is closed. After the shooting operation, even if the switch FWS is off, the switch LES linked to the shooting mechanism is on, so the output of the OR circuit OR ₁ is “High” and immediately go to step # 171. Transition. In step # 171, wait for the switch FWS to be turned off next. Also at this time, it is repeatedly determined in step # 172 whether or not the rewinding switches ARWS and MRWS are turned on.

When it is determined in step # 171 that the switch FWS is opened, in step # 173, the terminals p ₁₀ and p ₁₁ are set to “High” and the film feed motor MO is braked. Then, in # 174, the timer interrupt is disabled, and the process waits for a certain time in the step of # 175. This fixed time is a time (for example, 50 m sec) sufficient to stop the film winding by applying a brake to the motor MO, and when this time elapses, the process proceeds to step # 176. The switch LES linked to the shooting mechanism is always off by the time the film feed switch FWS is turned off. # 176 step,
Determine whether the switch FSS indicating the hoisting stop position is ON, and if this switch FSS is ON, set terminals p ₁₀ and p ₁₁ to "Low" in step # 183 to start the motor.
Turn OFF, set flag WF to "0" in step # 184, and return to return address.

On the other hand, when the switch FSS is OFF because the power supply battery BA is exhausted in step # 176, # 177
Migrated to step presets the 1/4 sec to interrupt timer to enable the timer interrupt, the terminal p ₁₀ "High", again is rotated forward the motor MO as a p ₁₁ "Low". Then, in step # 180, the winding stop position switch FSS is turned on. Also in this case, the determination of the rewind switches ARWS and MRWS is performed in step # 185. When it is determined that the switch FSS is turned on in the step of # 180, the timer interrupt is disabled in the step of # 181, and it is set to 5 in the step of # 182.
Brakes the motor MO for 0 m sec, and then
Turning it OFF stops the film feed motor MO (stops film winding), sets the flag WF to "0", and returns to the return address.

When it is determined in any of steps # 170, # 172, and # 185 that the rewinding switches ARWS and MRWS are closed during film winding, in step # 186, the winding is stopped in the same manner as step # 182. . Then, the timer interrupt is disabled and the process proceeds to step # 6 in FIG. 9 to perform the rewinding routine.

If the switch FWS is not turned off within 2 seconds or the switch FSS is not turned on within 1/4 seconds because the power supply battery BA is exhausted, a timer interrupt is applied, and the operation from step # 245 in Fig. 11 is performed. To do. In # 245, WF indicates winding
Is "1", and in this case the flag WF is "1", the film feeding motor MO is stopped at # 246 to stop the winding. Then, the bit b _{20 is set} to “1” to make the film counter display section 36 blink, and b _{24 is set} to “0”.
The winding display 33 is turned off as a b ₃₂ ~b ₃₀ "001"
As normal shooting mode, and set b21 to "0" regardless of the open / closed state of the lens cover display 15, 16, 17, ₁₈ ,,, 26,
All 27 are turned off, the display data is transferred to the display control circuit DS, and the microcomputer MC stops operating without accepting any interrupt signal. Therefore, in this case, the camera will not operate unless the power supply battery BA is replaced, and only a warning that the power supply battery BA is exhausted and the camera cannot operate will be issued.

When the operation of the film winding subroutine of # 134 described above is normally performed, "1" is added to the content of the film counter register FCR. This register FCR
Is reset to "00 _H " when the case back is opened (# 9
7). Then, the process proceeds to the # 136 counter display subroutine. This subroutine for displaying the counter is shown in the operation from # 49 in FIG. Table 7 shows the flags BRW, BA
Shows the relationship between F, registers FCR and DPR ₁ , and display.

In step # 49, FCR calculation ((FCR) -1 in # 25 = 1 =
(FCR)) to determine whether the borrow BRW is "1". This occurs when the amount of rewinding is larger than the amount of winding up after closing the back cover. Then, set the "00 _H" to register FCR for the "0" to the counter display when the borrow BRW is "1", a borrow BRW to "0"# 52
Move to. In # 52, it is determined whether the flag BAF is "1". If "1", the process proceeds to # 53, and if "0", the process proceeds to # 55. This flag BAF is a flag that becomes "1" when the power supply battery BA is replaced with the film mounted and the back lid is closed and the counter is not preset. If this flag BAF is "1", display register DPR
The ₁ sets the "AA _H" to display "00", the b ₂₀ to effect the flashing of the counter "1" back to the to return to the address.

When the flag BAF is "0" in # 52 in steps the contents of FCR at step # 55 to determine whether "00 _H". If it is "00 _H ", set "OA _H " in the register DPR ₁ and set the counter.
The 36 as "0" is displayed, the counter display 36 in step # 71 returns to the return address in the a b ₂₀ "0" to light up. When # is possible in 55 steps not FCR = "00 _H" is determined, then FCR = "is determined in a step 01 _H whether # 57. Then," 01 _H "if display during the preliminary feeding" Set the data "BO _H " for "-" to register DPR ₁ , return to the return address through step # 71. If it is determined in step # 57 that FCR = not "01 _H ", then In step, it is determined whether FCR = "02 _H ", and if it is "02 _H ", set the data "OB _H " for performing the display "-" during preliminary feeding to the register DPR ₁ (step # 60),
Return to the return address after step # 71. If FCR ≠ “02 _H ” in step # 59, the process proceeds to step # 61. #
The 61 steps, the register contents of FCR is determined whether it is the "2A _H", if turned "2A _H" Table 7
As the film counter display limit “39” is exceeded as shown in, the “2” is displayed to continue to display the limit value “39”.
9 _H ”is set in the register FCR and the process proceeds to step # 63. On the other hand, the content of the register FCR is set to“ 2 ”in step # 61.
If it is not "A _H ", go to step # 63.
In the step of # 63, the data obtained by subtracting the count value "2 _H " of the preliminary feed from the contents of the register FCR is set in the register FCR ₁ , and the following calculation for display is performed. This operation calculates how many times the contents of FCR ₁ is more than “A _H ”, and the register FCR ₂ stores the decimal data “0”, “1”,
“2” and “3” are set, _one of the data of “0” to “9” is set in FCR ₁ , and the process proceeds to step # 67. In the step of # 67, when the lower 4 bits of the register FCR ₁ is “0 _H ”, “A _H ” is set in the step of # 68 to display “0” and in the step of # 67 the FCR ₁ If the contents of the lower 4 bits are not "0 _H ", leave them as they are #
Go to step 69. Register at step # 69
The lower 4 bits of data of FCR ₂ are set in the upper 4 bits of register DPR ₁ , and the lower 4 bits of FCR ₁ are set in the lower 4 bits of register DPR ₁ . Then, set the lower 4 bits of register FCR ₂ to "0 _H " and display the counter in step # 71.
Set "0" so that 38 lights up and return to the return address.

The operation when the back cover is closed will be described again with reference to the flowchart of FIG. When the counter display subroutine of # 136 is completed, the display data transfer subroutine of # 137 is performed, and it is determined in step # 138 whether or not the back cover is opened during the preliminary feeding. When it is determined that the case back has been opened, the process returns to step # 1 to perform an operation such as stopping the film feed motor MO, and then the operation for opening the case back from # 93 is performed. . If it is determined in step # 138 that the case back has not been opened, then the process proceeds to step # 139 and the register F
Determine whether the CR content is “3 _H ”,
If it is not "3 _H ", return to step # 134 and perform the next preliminary feed. # When the content of FCR becomes "3 _H " in step 139 and it is judged that the preliminary feed is completed, #
To turn off the film winding display 33 shifts to 140 steps, the b ₂₄ waits a predetermined time as "0". Here, the data on the film container is read in the next subroutine # 142, but the film has been wound by the time before this. Therefore, immediately after the end of winding, the film container may be moving and the contact between the data detection contact and the data section on the film container may not be stable, and erroneous data may be read. Therefore, in the step of # 141, the time for stabilizing the contact between the data part on the film container and the detection contact is waited.

When a certain time elapses in the step of # 141, it shifts to the ISO data reading subroutine of # 142. This subroutine is shown by the flow from step # 150. # 1
50 The terminal p ₁₈ as "High" film sensitivity reading circuit CA
To enable data output. Then, in step # 151, serial input / output operation is performed to read the ISO data from the film container, and the read data is set in the register SVR. And I read in steps # 153 and # 154
Of the lower 2 bits of SO data, at least one is judged whether it is "1". If at least one is "1", it is ISO
This is the case where the film container provided with the data signal member is mounted, and the process proceeds to step # 155. And
In step # 155, b ₂₇ is lit to turn on the display unit 29 that indicates that the ISO data has been read from the film container.
Is set to “1”, the read ISO data is set in the register DPR ₀ , and it returns to the return address. On the other hand, when it is determined in steps # 153 and 154 that neither of the lower 2 bits is "1", a film container without an ISO data signal member is mounted, or a film container is not mounted. In this case, the process proceeds to step # 157. In step # 157, b _{27 is set} to “0” to turn on the display 28 that indicates that the ISO data is fixed.
The data corresponding to SO100 is set in the register SVR, and this data is further set in the register DPR ₀ to return to the return address.

When the ISO data reading subroutine # 142 described above is completed, the operation of the display data transfer subroutine of # 143 is performed to make it ready to accept the interrupt signal from the terminals it ₀ and it _{1, and} from the step of # 215 in FIG. Move to flash boost operation. # As "Low" terminals p ₁₂ in 215 steps to initiate the boost operation, in step # 216 to perform the detection of the charge state of the flash of the main capacitor as a terminal p ₁₃ "High". Then, in the step of # 217, the interrupt operation by the interrupt signal to the terminal it ₁ is enabled, and the process proceeds to the step of # 218. The step of # 217 is a step required when the lens cover opening operation is performed. In the step of # 218, the flag CHF is set to "1" to indicate that the flash is being boosted, and # 2 is set.
At 19, wait until the charge level of the main capacitor C ₁₁ is charged to a level at which the amount of light emission can be guaranteed and charging is complete 2 OK.
Then, when the charge completion 2 is OK, data of 10 sec is set in the interrupt timer in step # 220, the timer interrupt is enabled, and the process proceeds to step # 222. In step # 222, it is determined whether or not the charge level of the main capacitor C11 is charged to a level at which the state of full 2 OK can be maintained even if the main capacitor C11 is left for a long time, and the state of full 1 OK is reached. When the charge is 2 OK and the charge is 1 OK by 10 seconds, the boosting is stopped in step # 223, the detection of the charge state is stopped in step # 224, and the flag CHF is set to “0”. The interrupt operation by the timer is prohibited and the microcomputer MC stops operating.

When the state of full 2 OK does not reach full 1 OK even after 10 seconds have passed, a timer interrupt occurs at the time of 10 seconds, and the operation from step # 245 is performed. In this case, the flag CHF is "1", so after going through the steps # 245 and 255, #
In step 265, CHF is determined to be “1”, and # 26
Go to step 6. The step-up operation is stopped in step # 266, and the charge state detection operation is stopped in step # 267. Then, a flag CHF to "0", in step # 269, a b ₂₀ to warn that the power supply battery BA is exhausted by blinking the film counter display unit 38 to "1". Next, the display data is transferred, the operation by the interrupt signal to the terminals it ₀ and it ₁ is enabled, and the process proceeds to step # 359 in FIG. Then, in step # 359, it is determined whether or not the photometric switch S ₁ is closed, and S ₁ is OF
It waits until it becomes F, then shifts to the subroutine when S _{1 of} # 361 turns OFF, and when the operation of this subroutine ends, the microcomputer MC stops its operation. The subroutine of # 361 is shown in the flow from # 365. # Transistor for feeding BT as "High" terminals p ₁₇ in 365 steps
₁ and OFF, the AE lock and release state as "High" terminals p ₁₉ at step # 366, and sets the data of "0000" to b ₃₇ ~b ₃₄ light emitting diode L ₂ ~L ₄ is turned off And transfer the display data in step # 368,
Flag ST that becomes “1” in self-timer shooting mode
Set F to “0” and return to the return address. Although the above steps # 359 and # 361 are not necessary when the case back is closed, the steps # 266 and # 266 are performed when boosting is performed when the photometric switch S ₁ is closed. The above operation is performed because the operation from step may be performed.

The above is the operation when the case back is closed. Next, the operation when the release button 1 is operated and the photometric switch S ₁ is closed will be described. When the release button 1 is pressed to the first step and the photometric switch S ₁ is closed, the output of the inverter IN ₁ in Fig. 3 falls to "Low", and the microcomputer MC sends this fall signal from the terminal it ₁ In response to this, an interrupt operation is performed. If it is not possible to accept the interrupt from it ₁ while the microcomputer MC is operating,
The operation by closing the photometric switch is performed when the interrupt operation by it ₁ becomes possible during or after the operation.
In addition, when the microcomputer MC is not operating in a state in which it can be operated by the interrupt signal from the terminal it ₁ , the photometric switch S ₁ is closed to start the operation immediately. The microcomputer MC does not operate even when the power battery BA is exhausted and the film is not wound within a predetermined time, or when the photometric switch S ₁ is closed when the lens cover is closed.

When the photometric switch S ₁ is closed, the microcomputer MC will
Perform the operation from step 295. In step # 295, detection of the charge state is started (may not be performed), in step # 296, boosting is stopped (may be performed), and the process proceeds to step # 297. To do. Then, in the step of # 297, terminal p _{17 is set} to "Lo
w ", turn on the power supply transistor BT ₁ , and then in step # 298, output a" High "pulse to the terminal p ₂₆ to output the AF circuit.
Start the AC distance detection operation. Then, in step # 299, after waiting for a time required for the distance detection and exposure control photometry circuit to stabilize, the process proceeds to step # 300, in which the terminal p _{19 is set} to "Low" to store the photometry output and AE lock is performed.

In step # 301, it is determined whether or not the continuous shooting mode is set, and in # 302, it is determined whether or not the non-flash shooting mode is set. Since the flash does not fire in any of these modes, the process proceeds to step # 320. Becomes exposure time subject to heavy vibration camera exposure time based on photometric value in step # 320, it is determined whether the terminal p ₂₃ is set to "Low". The results in exposure time occurs the camera shake, the b ₃₇ ~b ₃₄ at step # 322 when underexposed the shutter is controlled by the exposure time of the slowest "001
The data of "0" is set to make the green light emitting diode L ₂ blink, and the process proceeds to step # 323. On the other hand, # 320
Step When the appropriate exposure without causing camera shake with an exposure time obtained based on the light measurement value of the green set of data of "0001" to b ₃₇ ~b ₃₄ in step # 321 of the light emitting diode L ₂ is turned on, and the process proceeds to step # 323. # The 323 steps and transfers display data, the process proceeds to FIG. 13 of # 370 in steps as the terminal p ₂₁ "Low" as flash emission is not performed.

If it is determined in steps # 301 and 302 that the shooting mode is neither continuous shooting mode nor non-flash shooting mode, #
In step 303, it is determined whether the self-timer shooting mode is set. Then, in the self-timer shooting mode, the flag STF is set to "1" and the process proceeds to step # 306. On the other hand, if it is not in the self-timer shooting mode, then # 305
In the step, it is determined whether the normal shooting mode is set, and if the normal shooting mode is set, the process proceeds to step # 306. On the other hand, if it is determined in step # 305 that the normal shooting mode is not set, the close-up shooting mode or the fill-in flash shooting mode is set, and flash shooting is performed regardless of the exposure time (photometric value). Go to step. On the other hand, in the self-timer shooting and the normal shooting mode, it is determined in step # 306 whether or not the exposure time based on the photometric value is the exposure time when the camera shake occurs. When the camera shake does not occur in the operation, the operation shifts to the operation for stationary light imaging from step # 321 described above.

# In step 307, it is determined whether the charge is 2 OK and the charge is 2 OK.
If not, move to # 330. # 330 starts the boost operation in, sets the data of "1000" to b ₃₇ ~b _34, a state in which the red light emitting diode L ₃ flashes, step # 334 after waiting a predetermined time to transfer the display data Use to determine whether metering switch S ₁ is "ON". Then, if S ₁ is OFF, the register COR is reset in step # 335, the above-described S ₁ OFF subroutine operation is performed, and then the process proceeds to step # 342 described later. On the other hand, S ₁ is O
If it is N, "1" is added to the contents of the register COR in the step of # 340, and it is determined whether or not the contents of the COR has reached the constant value K in the step of # 341. And if K has not been reached #
Returning to step 307, if the charge 2 is not OK, the operation described above is repeated. Then, when it is determined in step # 341 that the content of the register COR has reached K,
This means that the certain time in # 333 has been counted K times so far. If this (constant time) × K is set to 0.5 sec, for example, if 0.5 sec elapses before the boosting starts and the charge is completed 2 OK, the process proceeds to step # 342, and the photometric switch S ₁ is closed thereafter. As long as the release switch S ₂ is closed, the exposure control is not performed (the shooting operation is not performed).

When it is determined in step # 307 that the state of charge 2 is OK, boosting is stopped in step # 308, and # 3
The detection of the charging state is stopped in the step of 09, and the process proceeds to the step of # 310. In step # 310, terminal p ₂₄ is set to “Hig
h is the state in which the data set the green light emitting diode L ₄ flashes of 0100 "" to determine whether it is in, to b ₃₇ ~b ₃₄ when the light emission amount insufficient ". On the other hand, the light emission amount If not become insufficient, the green light emitting diode L ₄ sets the data of "1100" to b ₃₇ ~b ₃₄ is in a state of lighting.
Then, in step # 313, the display data is transferred, and # 314
In the step of, the terminal p _{21 is set} to “High” so that the flash is emitted, and the process proceeds to the step of # 315. Step # 315 to determine whether the close-up mode, close if shooting mode terminals p ₂₂ to "High", the flow proceeds to step # 370 of connection 13 view as a terminal p ₂₂ "Low" if not close-up mode To do. As mentioned above, the close-up shooting mode is Fill-in Fl.
If the same operation as in the ash photographing mode is performed, the terminal p ₂₂ , the transistors BT ₇ and BT _{8 in} FIG. ₈ , the resistor R ₀ , and the steps # 315, 316, and 317 may be omitted.

In the step of # 341, the contents of register COR becomes K, and 0.5s
When it is determined that ec has passed, the process proceeds to step # 342, the contents of the register COR are reset, and the terminals it ₀ , i
Enable the operation by the interrupt signal to t ₁ and move to the step of # 345. # 2 is OK in step 345
If it is not in the state of full 2 OK, the process proceeds to step # 346, and it is determined whether or not the photometric switch S ₁ remains ON. Then, if it is OFF, the operation of the subroutine of S ₁ OFF described above is performed in # 347, and if S ₁ is ON, the process directly returns to the step of # 345. Then, when it is determined in step # 345 that the state of full 2 OK is reached, the process proceeds to step # 350, and data of 10 sec is set in the timer. After that, enable the operation by the timer interrupt, set the flag CHF to "1", and then complete in step # 353.
1 Determine whether it is OK or not. If the charge 1 is not in the OK state, the process proceeds to step # 354 and # 346,347.
Perform the same operation as, and return to step # 353. When it is determined in # 353 that the charge 1 is in the OK state, the process proceeds to step # 356, the boosting is stopped, the detection of the charge state is stopped, and the flag CHF is set to “0”. Go to step # 359. In step # 359, wait for the photometric switch S ₁ to turn off. When S ₁ turns off, set the timer to 3 min. Data and execute the S ₁ OFF subroutine to execute the microcomputer M
C stops working. Here, if the mode is set by the mode setting button 3 for 3 min., It will automatically return to the normal shooting mode after 3 min.
This is the data for this. During this time, if the metering switch S ₁ is turned on and no picture is taken, S ₁
This step is provided to extend the automatic recovery time while is ON.

To summarize the flash shooting preparation operation described above,
When it is determined that the flash photography is necessary (is performed), it is determined whether or not the state is full 2OK, and if the state is complete 2OK, the exposure control operation can be performed. On the other hand, if the charge is not 2 OK, the boost operation is performed, and if the charge is 2 OK in 0.5 sec, the exposure control operation can be performed. While if not the charge completion 2OK photometric switch S ₁ is closed between 0.5sec can not migrate to the exposure control operation, the step-up operation is the photometric switch S ₁ of the ON, O
It continues regardless of FF, and the boost operation is continued until the charge 1 OK. When it is determined that flash photography is necessary and it is determined that the charging is not complete 2OK, the boosting operation is started, but the metering switch S ₁ is turned on.
As long as it remains ON, the exposure control operation may not be performed, and the portion that enables the exposure control operation may be omitted for the above 0.5 seconds. To do this,
Skip steps # 333, 335, 340, 341, 342, and if it is determined that S ₁ is ON in step # 334, immediately move to step 343, and turn S ₁ OFF in step 334.
If it is determined that, the process proceeds to the step of # 343 via the subroutine of # 336.

When the preparatory operation for the stationary light imaging or the flash light imaging is completed, the process proceeds to step # 370 in FIG. In step # 370, it is determined whether or not the photometric switch S ₁ is turned on. If it is turned off, the process proceeds to step # 394 to restore the state before S ₁ was turned on. If S ₁ is ON, then # 37
In step 1, it is determined whether or not the release button 1 is pushed to the second step and the release switch S ₂ is turned on. If it is not turned on, the process returns to step # 370 and waits for the release switch S ₂ to be turned on while determining whether the photometric switch S ₁ is turned off. If it is determined in step # 371 that the release switch S ₂ is closed, the process proceeds to step # 372 to determine whether the flag STF is "1" in the self-timer shooting mode. Then, the flag STF is shifted to the step of if # 373 "1", timer setting data of 10 sec (10 sec time for self-timer) to set the "00001" to b ₃₇ ~b _33, self-timer The display data is transferred in a state where the red light emitting diode L ₁ for display blinks and the remaining light emitting diodes L _{2 to} L ₄ are turned off. Then, in # 376, the operation by the interrupt signal to the terminals it ₀ and it ₁ and the interrupt operation by the timer are enabled, and the microcomputer MC stops the operation. Then, the light emitting diode L ₁ is only blinking for ₁₀ seconds. Note that it is possible to interrupt it ₀ and it ₁ by performing various operations during the self-timer time (rewinding, opening / closing the back cover, opening / closing the lens cover,
This is for canceling the self-timer by switching modes, pressing down the release button, etc.). When 10 seconds elapse, the microcomputer MC is interrupted by the timer and the
Perform the operation of step # 245 in FIG. In this case, since the flag STF is "1", the process proceeds to steps # 245, 255, 265, 275 and then # 276. Then, in step # 276, b _{33 is set} to “0” to turn off the red light emitting diode L ₁ for self-timer display, the display data is transferred next, and the flag STF is set to “0” to set the first value. In step # 380 in FIG. 13, the exposure control operation is performed.

# Flag STF at step 372 goes to when or step # 380 and the self-timer time (10 sec) is the end of "0", and outputs a pulse of "High" to the terminal p _20, an exposure control operation and the lens To start moving. Then, in step # 381, the flag RLF is set to "1". This flag is a flag indicating that the exposure is being controlled. And 50m sec on the timer
Set the data of, enable the timer interrupt, and proceed to the step of # 384. In step # 384, the operation of the exposure control mechanism (for example, the lens moving mechanism) actually starts and waits until the switch LES is turned on. If 50 msec elapses before the switch LES is turned on, in this case the exposure control mechanism is not operating normally for some reason, and the timer interrupt is applied, and the step # 245 in Figure 11 is executed. The operation from is performed. In this case, since the flag RLF is "1", the process proceeds to step # 281 via # 245,255,265,275,280. In the step of # 281, the terminals p ₁₇ and p ₁₉ are set to “High”, the power supply transistor BT ₁ is turned off, and the AE lock is released.
Then, next, p ₁₃ and p ₂₂ are set to “Low” to stop detection of the state of charge of the flash and release the close-up photography mode. Then, the flag RLF is set to "0", and sets the data "0000" for turning off the light emitting diode L ₂ ~L ₄ to b ₃₇ ~b _34, and transfers the display data. Next, in step # 286, the operation is enabled by the interrupt signal to the terminals it ₀ and it _1, and the microcomputer MC stops the operation.

If it is determined in step # 384 that the switch LES is turned on within 50 msec, the timer interrupt is not accepted in step # 385, and the exposure control circuit E is processed in step # 386.
Exposure control operation by C is completed, the terminal p ₂₅ waits to become "High". Then, the exposure control operation ends and terminal p
_When it is determined that ₂₅ has become "High", the process proceeds to # 388, and the winding operation by the above-described winding subroutine is performed. When the winding operation is completed and the back cover is closed, "1" is added to the contents of the film counter register FCR, the counter display subroutine is operated, and the display data is transferred. Go to step 392. On the other hand, if the case back is open, the process immediately proceeds to # 392 after the winding subroutine. # The 392 steps to determine whether it is left photometric switch S ₁ is being closed, moves to a # 393 steps photometric switch S ₁ is closed. Then, it is determined whether or not the continuous shooting mode is set. If the continuous shooting mode is not set, the process returns to step # 392 and waits until the photometric switch is turned off. Meanwhile, # 3
If it is determined in step 93 that the continuous shooting mode is set, the process returns to step # 298 in FIG. 12 to prepare for the next exposure control operation. Therefore, in continuous shooting mode,
As described above, only the stationary light photographing is performed, and the photographing is repeated as long as the release switch S ₂ is closed.

If it is determined that the photometric switch S ₁ is turned off in step # 392, the process proceeds to step # 394, where S ₁ OFF
The subroutine is operated, and the process proceeds to step # 395. In step # 395, it is determined whether the flag RLF is “1”. If it is “1”, the exposure control operation is performed and the photometric switch S ₁ is turned off. Flag RLF to "0". Then b ₃₂ to ~b ₃₀ "0
By setting the data of "01", the next shooting automatically returns to the normal shooting mode, the display data is transferred, and the operation is enabled by the interrupt signal to terminals it ₀ and it ₁ If the flag RLF is determined to be "0" in step # 395, the process proceeds to step # 215 to set the data for 3 min. In the timer. However, the microcomputer MC stops the operation by enabling the operation by the interrupt signal from the timer, it ₀ , it ₁ .
When the flag RLF is “0”, this corresponds to the case where the exposure control operation is not performed and the photometric switch S ₁ is turned off. In this case, the automatic return to the normal shooting mode is performed after 3 minutes. The preparatory operation is performed and the microcomputer MC stops operating.

Next, an operation when the rewinding switch MRWS is turned on by a manual operation or the film is wound up to the last frame and the film is stretched and the switch ARWS is turned on will be described. If the photometric switch S ₁ is turned off in the above-mentioned state, the microcomputer MC performs the operations from # 1 in FIG.
After 3,4,5, move to step # 6. In step # 6, the presence / absence of a film is detected, and when there is no film, the interrupt operation by the terminals it ₀ and it ₁ is enabled and the microcomputer MC stops the operation. When the presence of the film is detected in step # 6, the process proceeds to step # 7, and it is determined whether or not the back cover is closed. Then, if the back cover is closed, set “10” to b ₂₅ and b ₂₄ , and the winding display 33,3
4 is turned off and the rewind display sections 31 and 32 are turned on alternately. Next, set the data of “001” to b ₃₂ , b ₃₁ , and b ₃₀ , set to the normal shooting mode, set “00000” to b _{37 to} b _33, and turn off the light emitting diodes L _{1 to} L _4. Ready to go. Then, in step # 13, the display data is transferred and the process proceeds to step # 14. In step # 14, the state of the switch SPS, which is turned on and off according to the rotation of the driven sprocket, is determined in conjunction with the driven sprocket that rotates in tandem with the film feed. If the switch SPS is ON, set the flag SPF to "1",
If OFF, set to “0”. The flag SPF is provided to detect a change in the state of the switch SPS by discriminating by combining the state of the switch SPS and the state of the flag SPF. Next, the terminal p _{10 is set} to “Low” and p _{11 is set} to “High” to reverse the motor MO to start the film rewinding operation, then set the timer to 1/4 sec, and then set the timer. The operation by interruption is enabled, and then the flag RWF indicating that rewinding is being performed is set to "1", and the process proceeds to step # 28. # 2
In step 8, it is determined whether the automatic rewind switch ARWS is ON. When it is ON, the flag ARF is set to “1”, and when it is OFF, AR
Set F to "0" and move to step # 21.

In the step of # 21, it is judged whether or not the film feed switch FWS is ON, and if it is ON, the operation of the rewinding subroutine of # 22 is performed, and the process returns to the step of # 21. This operation is repeated while the film feed switch FWS is ON, and when it is OFF #
Go to step 23. Then, in step # 23, it is determined whether the switch FWS is OFF, and if it is OFF, # 2
At step 4, the rewind subroutine is executed and the process returns to step # 23. Then, this operation is continued, and the switch FWS turns
When it is determined that the number is N, the process proceeds to step # 25. In step # 25, "1" is subtracted from the counter register FCR, and in step # 26, the counter display subroutine is operated to transfer the display data.
Return to step 21. The above operation is the operation of the rewinding subroutine, and when it is determined that the case back has been opened,
The process is repeated until it is determined that the rewinding of the film is completed and when it is determined that the rewinding operation is abnormal.

Next, the operation of the rewinding subroutine from # 30 will be described. In # 30 steps to determine if the back cover is opened, when the back cover is opened is determined, the motor terminals p _10, p ₁₁ at step # 31 as 50m between sec "High" Brake the MO, then set both terminals to “Low”,
Go to step # 93 in the figure to perform the operation when the back cover is opened. If it is determined in step # 30 that the back cover has not been opened, in step # 32 the film detection switch
It is determined whether or not both FDS ₀ and FDS ₁ are in the state of not detecting the film. Then, if both the switches FDS ₀ and FDS ₁ are in a state where the film is not detected, the process proceeds to step # 46, it is determined whether the flag AFR is "1", and "0" is determined.
If so, it means that the manual rewind switch MRWS is turned on and rewinding is being performed, and immediately proceed to step # 33 in order to end rewinding with the leading edge of the film coming out of the film container. Then, the motor MO is stopped and the rewinding is stopped. On the other hand, if the ARF is "1", the automatic rewind switch ARWS is turned on to rewind. In this case, in order to prevent the leading edge of the film from being caught in the film container, wait for a certain period of time in step # 47 to continue rewinding for a certain period of time even if switch FDS ₁ is turned off. Stop motor MO and stop rewinding in step # 33.

Then set "011" to b _25, b _23, b ₂₂ at step # 34 to turn off the rewind display unit 31, the opening of the back cover, closing the display unit 36, 37
Are turned off alternately, and the display data is transferred. Then, the operation by the timer interrupt is disabled and the terminals it ₀ , it
Enables operation by an interrupt signal to ₁ , sets flag RWF indicating rewinding to “0”, and flag RBF indicating back cover closure to “1”
To stop working.

When it is detected that there is film in step # 32,
Next, in step # 40, it is determined whether the flag SPF is "1". If it is "1", it is then determined in step # 41 whether the switch SPS is ON. On the other hand, if the SPF is "0", # 42
In step, determine whether the switch SPS is off. If the SPF is "1" and the switch SPS is OFF, it means that the switch SPS has changed from ON to OFF. Therefore, the flag SPF is set to "0", while the SPF is "0" and the switch SPS is When it is ON, the switch SPS has changed from OFF to ON, so the flag SPF is set to "1" and the process proceeds to # 45. Then, in step # 45, 1/4 sec data is set in the timer and the process returns to the return address. On the other hand, when it is detected that the switch SPS has not changed, the process directly returns to the return address. As described above, even if a special film is attached and the film is detected, the rewinding of the film is not performed or the battery BA is exhausted, and the status of the switch SPS is reduced to 1/4 seconds. If does not change, a timer interrupt is taken and the operation from step # 245 in FIG. 11 is performed. In this case, since the flag RWF is "1", the process proceeds to step # 256 via # 245 and 255. # Stops the motor MO in step 256, by setting "0" to b ₂₅ to the state of turning off the rewind display 31 and 32, b
₂₃ and b ₂₂ are set to “11”, the back cover open / close display sections 36 and 37 are turned on alternately, and the display data is transferred. next,
The flag RWF indicating that rewinding is set to “0”, and the flag TIF indicating that an abnormal condition is detected and rewinding is stopped is set to “1”,
Only the interrupt operation by the interrupt signal to the terminal it ₀ is possible, the flag RBF indicating the back cover closing is set to “1”, and the microcomputer MC stops the operation.

In the above description, the reason why the flag RBF indicating the closing of the back cover is set to “1” at the end of film rewinding will be described. The switch ARWS turns on when the film is stretched with the case back open.
Then, an interrupt signal is input to the terminal it ₀ and the microcomputer MC starts its operation, but it is determined in step # 7 that the back cover is opened, and the microcomputer MC does not perform the rewinding operation. When the back cover is closed in this state, an interrupt signal is input to the terminal it ₀ , the microcomputer MC restarts its operation, and it is determined in step # 5 that the switch ARWS is ON. Therefore, the rewinding operation is performed. Therefore, in this case, the film is rewound by closing the back cover. Therefore, if the flag RBF is set to "1" after the rewinding operation, the case as described above will occur. Also, a signal corresponding to the state of the back cover is set in the flag RBF.

If the case back is opened and the film is stretched,
The process moves from step 7 to step # 196 in FIG. 11 to determine the state of the lens cover. This is because the back cover may be opened and the lens cover may be opened / closed with the film stretched. In this state, even if the mode button 3 is operated and an interrupt occurs, the mode switching operation is not performed.

Next, the operation when the case back is opened will be described.
When the back cover is opened, the switch BKS is turned on and an interrupt signal is input to the terminal it ₀ , and steps # 1-5 are followed by # 90 in FIG.
Perform the operation from step. When the back cover is opened during rewinding, the process proceeds from step # 30, 31 in FIG. 9 to step # 93. If it is determined in step # 90 that the back cover is open, and if it is determined in step # 91 that the flag RBF is “1”, then RBF is set to “0” in step # 93. , Move to step # 94. In step # 94, it is determined whether or not the film is loaded, and if it is loaded, the flag FEF is set to "1", and if it is not loaded, the FEF is set to "0". As described above, this flag FEF is provided to blink the film display unit 35 to give a warning when the back cover is opened with the film still attached and the back cover is closed again with the film being left as it is. is there.

Next, in the step of # 97, the film counter register FCR
Is set to “00 _H ”, the film counter display subroutine is operated, and then data of “0000” is set to b _{27 to} b ₂₄ to display that the film sensitivity is fixed. 28 is turned on, the film display unit 35 is turned off, and the winding display units 33 and 34 and the rewinding display units 31 and 32 are turned off.
Next, set the data of “001” to b ₃₂ , b ₃₁ , and b ₃₀ to set the normal shooting mode, set “00000” to b _{37 to} b ₃₃ , and turn off the light emitting diodes L _{1 to} L _4. And And register SV
The R sets the data corresponding to ISO100, set this data to the display register DPR _0. Next, set the data “OA _H ”, which indicates “0” in the number of films, in the register DPR ₁ , set “10” in b ₂₃ and b ₂₂ to turn on the back cover open display part 37, Transfer display data in step # 105,
Go to step # 106. In the step of # 106, it is judged whether or not the film is mounted, and if the film is mounted, the operation is stopped by enabling the operation by the interrupt signal to the terminals it ₀ and it _{1 in} the step of # 114. On the other hand, if the film is not loaded, the process proceeds to step # 109 to determine whether the flag TIF is "1". And TIF is "1"
If this is the case when an error is detected during rewinding and the motor MO stops, and if the film winding is performed normally by performing the operation of the winding subroutine in step # 111,
Next, the operation of the winding subroutine is performed again. When the winding operation is normally performed twice, the flag TIF
Is set to “0” and the process proceeds to step # 114. This operation is to confirm whether the rewinding has stopped due to the exhaustion of the battery. Performing the two winding operations is to finish the winding immediately if it is in the middle of winding when the case back is opened. This is because the battery cannot be checked because of the condition. The number of windings is not limited to two, and may be three or more. If the number of windings is increased, safety can be secured by checking the battery. If it is determined in step # 109 that the flag TIF is "0", it is determined in step # 110 whether or not the winding is completed. If not completed, the remaining winding is performed in step # 112 and completed. If so, the process directly proceeds to step # 114.

Next, the operation in the case where the back cover is opened with the film attached and the film is pulled out will be described. In this case, from the output of the AND circuit AN _0, one-shot circuit O
A pulse is output from S ₃ and an interrupt signal is input to the terminal it ₀ , and the operation from # 1 is performed. And # 1-5,90,9
After the steps of 1,190, the process proceeds to step # 191 of FIG. Then, the flag FEF is set to "0" in the step of # 191 (it is "1" in # 95), and the winding operation is performed in the steps of # 192 and 193. This is to check the battery when an abnormality is detected during the rewinding and the rewinding is stopped. When the winding is normally performed twice, the flag
Set "0" to TIF, enable the operation by the interrupt signal to the pins it ₀ and it _1, and the microcomputer MC stops the operation.

Next, the operation when the lens cover is closed or opened will be described. In this case, a pulse is output from the exclusive OR circuit EO ₁ and an interrupt signal is input to pin it ₀
Start the operation from step 1 and perform # 1 to 5,90,91 or 9
After step 2,190, the process proceeds to step # 196 to determine whether the lens cover is open. If it is open, it is determined in step # 197 whether the flag CVF is "1". If it is "1", the state of the lens cover has not changed. In this case, the mode switch MOS is operated and the interrupt operation is performed. Has been performed, and the process proceeds to step # 227. Then, in step # 227, it is determined whether or not the back cover is opened. If the back cover is opened, the mode switching is not accepted, and therefore the operation is enabled by the interrupt signal to the terminals it ₀ and it ₁ , and the microcomputer MC Stop the operation.

If it is determined in step # 197 that the flag CVF is "0", it means that the lens cover is released from the closed state, the process proceeds to step # 198, and the flag CVF is set to "1". The b _32, the b _31, b ₃₀ set "001" as a normal shooting mode, the mode display 16-27 and the camera the display 15 as a b ₂₁ "1" is in a state of lighting. Then, the display data is transferred and the process proceeds to step # 210.

When it is determined in step # 196 that the cover is closed, it is determined in step # 203 whether the flag CVF is "0". If CVF is "0", the cover remains closed, and at this time, it means that the interrupt is applied by operating the mode switch MOS. However, since the mode is not switched when the lens cover is closed, the microcomputer MC stops the operation by enabling the operation by the interrupt signal to the terminals it ₀ and it _{1 in} step # 195.

On the other hand, when it is determined that the lens cover is switched from the open state to the closed state, the flag CVF is set to "0" in step # 204. Next, the mode and camera name display sections 16 to 27,
Set b ₂₁ to “0” to turn off 15 and turn on the light emitting diode L ₁
Set "00000" to b ₃₇ ~b ₃₃ to turn off the ~L _4, the processing proceeds to step # 210 and transfers the display data. # 210
In the step of, the operation by the interrupt signal from the terminal it ₀ is enabled and the flag COF is discriminated. This flag COF is "0" for the time when the film counter can be preset. If COF is "1" and the lens cover is closed, the microcomputer MC will stop operating,
Eventually, only the interrupt signal from the terminal it ₀ is accepted, and the interrupt by the photometric switch S ₁ is not accepted. On the other hand, CV
If F is "1" and it is determined that the cover is opened, the operation from step # 215 described above is performed to enable boosting the flash and interrupting the terminal it ₁ . Also, # 211
When the flag COF is "1" in step, if the cover is open, it can be operated by the interrupt signal to it ₁ and it ₂ , and if the cover is closed, only the interrupt signal to it ₂ can be used. It is possible to move and return to the return address. Note that in any case, it ₀ can be interrupted by the step of # 210.

If the mode switch MOS is closed, the lens cover is open and the back cover is closed at this time.
The operation from step # 230 is performed in response to the interrupt signal from it ₀ . First, in step # 230, b ₃₂ , b
_It is determined whether or not ₃₁ and b ₃₀ are "110". If "110", the data of "001" is set in step # 232 to set the normal shooting mode. On the other hand, if it is determined in step # 230 that b ₃₂ , b ₃₁ , and b ₃₀ are not "110", "1" is added to this content and the next shooting mode is switched in the order described above. And light emitting diode
To b ₃₇ ~b ₃₃ to turn off the L ₁ ~L ₄ set the "00000", and transfers the display data. Next, the mode is switched and the flag MOF is set to "1" for 3 min.
Set the data of 3 min., Enable the interrupt operation by the timer, it ₀ , it ₁ and move to the step of # 238. In step # 238, it is determined whether the flag COF is "1", and if it is "1", the microcomputer MC stops its operation. On the other hand, if it is "0", it returns to the return address.

If the switching operation by the mode switch MOS or the photometering switch S ₁ is turned on after the mode switching and then turned off and 3 min. Has not passed by the interrupt operation by it ₀ , 3 mi
When n. has elapsed, the operation by the timer interrupt is performed. At this time, the operation is performed from the step of # 290 in FIG. 11, first, the flag MOF is set to “0”, and b ₃₂ , b ₃₁ and b ₃₀ are set to “001”.
Set the data of to set the normal shooting mode. And
The display data is transferred, and the microcomputer MC stops the operation by enabling the operation by the interrupt signal to the terminals it ₀ and it ₁ .
Therefore, the normal shooting mode is automatically returned to by the end of the exposure control operation, the operation of the mode switch MOS, the photometric switch S ₁ for 3 minutes, the opening / closing of the back lid, or the rewinding operation.

Next, the operation when the power battery BA is attached will be described.
If the power supply battery BA is installed after the backup by the capacitor C ₁ is not performed, the reset terminal RE
A reset signal is input to S by the capacitor C ₃ to the microcomputer MC, and the microcomputer MC starts the operation from step # 405 in FIG. In # 405 and 406, the output terminal is initialized, and in step # 407, the flag is initialized. Then, set the "00 _H" to the register FCR film counter, b _32, b _31, to b ₃₀ to set the "001" and the normal shooting mode. Subsequently, b ₃₇ sets the "00000" in ~b ₃₃ light emitting diodes L ₁ ~L ₄ Off Status, rewinding the display unit 3 as a b ₂₅ "0"
1, 32 are turned off, b _{20 is set} to “0” and the counter display section 38 is turned on. Next, to determine if the lens cover is open, if open the flag CVF "1", the mode display section 16 to 27 as a b ₂₁ "1", and the name display portion 15 illuminated. On the other hand, if it is determined in step # 411 that the lens cover is closed, the flag CVF is set to "0" and b
_{21 is set} to "0" and the mode display sections 16 to 27 and the name display section 15 are turned off.

Next, in step # 420, it is determined whether or not the back cover is opened, and if closed, the process proceeds to step # 421, and if opened, the process proceeds to step # 426. In step # 421, the flag RBF is set to "1" and the FEF is set to "0". And b ₂₃ ,
The back cover closing the display unit 36 as a lighting state by setting "01" to b _22, it detects the presence or absence of the film mounting. And, if the film is loaded, the flag to flash the counter
And "1" to BAF, a b ₂₆ to the film display unit 35 and the lighting state as "1", performs a reading operation of the ISO data from the vessel proceeds to step # 438. on the other hand,
If it is determined in step # 424 that the film is not loaded, the flag BAF is set to “0” in step # 425, and b
₂₇ and b ₂₆ are set to "00" to turn on the fixed ISO sensitivity display section 28 and turn off the film display section 35. Next, the ISO100 data is set in the register SVR, this data is set in the register DPR _0, and the process proceeds to step # 438.

If it is determined in step # 420 that the back cover is open, the process proceeds to step # 426, and the flag RBF is set to "0". Next, the flag BAF "0", set to "10" b _23, b ₂₂ in # 428, the lighting state of the back cover open display unit 37.
Then, it is determined whether or not the film is loaded, and if it is loaded, the FEF is set to "1", and if it is not loaded, the FEF is set to "0", and the process proceeds to step # 435.

In the step of # 438, the operation of the subroutine for displaying the counter is performed, and in the step of # 439, it is judged whether or not the winding is completed. If it is not in the winding completion state, b _{24 is set} to "1" so that the winding display portions 33 and 34 are alternately turned on, the display data is transferred, the operation of the winding subroutine is performed, and the process proceeds to step # 444. To do. On the other hand, the process goes to step immediately # 444 if at the winding completion state of the film step # 439, a b ₂₄ to "0", the winding display unit 33 and turned off. Then, the display data is transferred, the operation by the interrupt signal to the terminals it ₀ , it ₁ , and it ₂ is enabled, the register PCR for the counter is reset, and the boost operation and the detection of the charge state are started.
Go to step 455.

In step # 455 in FIG. 14, the flag COF is set to "0". This flag COF is "0" while the film counter can be preset. Next, it is determined whether or not the state is full 2 OK, and if the state is not full 2 OK, the process proceeds to step # 457. In the step of # 457, it is determined whether the flag COF is "1", and if it is "1", it is immediately # 45.
Return to step 6. On the other hand, if the flag COF is "0", # 458
Wait for a fixed time in the step of, and set the content of register PCR to "1".
Is added to determine whether the PCR content has reached T ₁ .
If it is not T ₁ , it immediately returns to the step of # 456, and if it is T ₁ , the operation by the interrupt signal to the terminal it ₂ is disabled, the flag COF is set to “1”, and the step of # 456 is performed. Return to. (Fixed time # 458) if in the × (T ₁ times) = 30sec, it is possible to preset 30sec between counter. When the state of full 2 OK is reached during the repetition of the above operation, the process proceeds to step # 465, the register CHR is reset, and it is determined whether or not the state of full 1 OK is reached. Then, if it is not in the state of full 1 OK, it waits for a certain period of time in step # 470 to determine whether the flag COF is "1".
If it is "1", 30 seconds have elapsed, so the process proceeds to step # 476. On the other hand, COF is added to "0" if the contents of the step register PCR of # 472 "1", the contents of the PCR to determine whether becomes T _1. And if it is T ₁ , 30se
Since c has elapsed, the operation by the interrupt signal to it ₂ is disabled, the flag COF is set to “1”, and the process proceeds to step # 476. On the other hand, if the PCR content is not T ₁ , the process directly proceeds to step # 476. Then, in # 476, "1" is added to the content of the register CHR to determine whether the content of the register CHR becomes T ₂ . And if it is T ₂ , (# 470 fixed time) × (T ₂ times) = 10 seconds has passed, so
by setting "1" to b ₂₀ a state counter display 36X blinks, the flow returns to step # 485 and transfers the display data.
On the other hand, if the CHR contents are not T ₂ in step # 477, the process returns to # 466.

# If turned in 466 steps to the state of the charge completion 1OK to b ₂₀ "0" to transfer the display data to the lighting state counter is set to, the processing proceeds to step # 485. Then, boosting and detection of the full state are stopped, and the process proceeds to step # 487. In the step of # 487, it is determined whether the flag COF is "1". If it is not "1", wait for 30 seconds to elapse in the same manner as described above, and if 30 seconds elapse, the operation by the interrupt signal to the terminal it ₂ Is disabled and flag COF is set to "1" to stop the operation. On the other hand, if it is determined in step # 487 that COF is "1", the microcomputer MC immediately stops operating.

If the counter preset button 4 is operated while the operation by the interrupt signal to the terminal it ₂ is possible, the counter switch
COS is closed, an interrupt signal is input to terminal it ₂ , and operation from # 495 starts. Then, if the film is not attached or the case back is opened, the microcomputer MC immediately stops the operation. On the other hand, if the back cover is closed and the film is loaded, the process proceeds to step # 497, and if the flag BAF is "1", it is set to "0" and the process proceeds to step # 499. Then, it is determined whether the register FCR is "00 _H ", and "00 _H "
If so, set data "03 _H " to display "1", and if not "00 _H ", add "1" to the contents of FCR. Then, when the content of the register FCR becomes the data "2A _H " exceeding the display limit, "03 _H " for displaying "1" is set in the step of # 502 and the process proceeds to the step of # 503. On the other hand, if the FCR contents are not "2A _H " in step # 501, #
Go to step 503. Then, in the step of # 502, the operation of the counter display subroutine is performed, the display data is transferred, the register PCR is reset to extend the acceptance time of the it ₂ interrupt signal, and the operation returns to the return address.

In the above embodiment, when the back cover is closed and the film is loaded, the power battery is replaced, and when the counter is not preset, the warning is continued until the back cover is opened and closed. However, if the flag BAF is "1" before the exposure subroutine ends and the winding subroutine (# 388) starts, the register FCR reads "02 _H ".
May be set so that "1" is displayed when the film winding is completed, and the flag BAF may be set to "0" so that no warning is given. Also, when the photometric switch S ₁ is closed, it is determined whether the flag BAF is "1" and "1" is set.
In this case, "03 _H " may be set in the register FCR and "0" may be set in the flag BAF. In the above case, the photometric switch S ₁
Since the back cover may be opened without turning on, it is necessary to set "0" if the flag BAF is "1" when the back cover is opened. Furthermore, the presetting is possible up to the first winding, and the time limit may be removed or only the time limit may be set.

FIG. 15 is a flowchart showing a modified example of this embodiment, in which flash photography is performed when flash photography is necessary even in continuous photography mode.
Fig. 13 is a modification of Figs. In the case of this modification, even if the continuous shooting mode is determined in step # 301, it is determined in step # 306 whether or not flash photography is necessary, and if necessary, it is determined in step 307 whether or not the state is full 2OK. To do.
Then, if the charge is 2 OK, the process proceeds to step # 308 to proceed to the exposure control operation. On the other hand, if charge 2 is not OK, flag RLF
It is determined whether is "1", and if it is not "1", the process proceeds to step # 330 to start boosting and wait 0.5 seconds. Meanwhile, the flag
If RLF is "1", will be at least one shot in the continuous shooting is performed, this time with a release lock state, the photometric switch S ₁ is the processing proceeds to step # 394 waiting to turned OFF. Therefore, in the case of this modified example, in the continuous shooting mode, continuous shooting is performed in the stationary light shooting mode, and in flash shooting mode, shooting is performed if the state is 2 OK before shooting starts. If it is not completely OK, shooting is not performed and flash shooting is performed only once.

Back cover is closed, when the power supply battery is replaced when the film is attached, so that a warning in the display of "00", but this time, the register FCR "03 _H"
May be preset to display "1". If the counter is not preset, the count value of the counter is incremented from "1".

Further, in the above-described embodiment, the counter is not preset even when only the photometric switch S ₁ is turned on and turned off except when the back cover is opened and the exposure is controlled. However, in this case, the metering switch S ₁ O
In order to preset the counter for 30 seconds from FF, after # 335, 347, 355, 361, # 401, when COF is “1”, PCR may be reset to return to the return address.

Further, the back cover is closed, when the film is replaced power supply battery in a state of being mounted, displayed preset "03 _H" to the register FCR "00" is kept so as to blink. Then, the operation by the interrupt signal from the terminal it ₁ may be prohibited for a certain time, and the prohibition may be released when the preset operation is performed. Further, in the above-described embodiment, there are five types of shooting modes in addition to the normal shooting mode, but the number of modes may be reduced to, for example, the self-timer shooting mode and the continuous shooting mode, or more types of shooting modes may be set. You may increase.

Further, the mode display may be performed even when the lens cover is closed, the setting mode may be the normal photographing mode, and the mode switching and the ON signal of the photometric switch S ₁ may not be accepted.

As described above, according to the present invention, when the shooting mode setting operation is performed and it is detected that the count value of the counting means exceeds the limit, the exposure control is performed by operating the release button. If any of the above is detected, the count value is preset and the shooting mode is set to the normal mode. With the above-described configuration, for example, the most normal mode is set, which is the most safe even if the shooting mode setting operation is performed too much and the target mode is passed. When the desired shooting mode is set and the release button is operated to control the exposure, the normal mode that allows the most safe shooting is automatically set. This is because it is considered that "changing the shooting mode is limited to frames with certain scenes", and according to the present invention, the normal shooting mode is automatically set to the shooting mode with the fewest failures. Controlled to set. Therefore, there is a peculiar effect that it is possible to prevent a failure in which the exposure control is finished and the next shooting is performed by forgetting that the shooting mode has been changed and shooting an unintended picture.

[Brief description of drawings]

1 is a perspective view showing an appearance of an example of a camera to which the present invention is applied, FIG. 2 is a plan view showing an example of a display portion of the camera of FIG. 1, and FIG. 3 is an embodiment of the present invention. 4 is a plan view showing an example of a film winding stop position switch used in the camera of FIG. 1, FIG. 5 is a circuit diagram showing an example of a flash device, and FIG. 6 is a display. FIG. 7 is a circuit diagram showing an example of a control section, FIG. 7 is a front view showing an example of display on the viewfinder of the camera shown in FIG. 1, FIG. 8 is a circuit diagram showing an example of a shutter control circuit, and FIGS. Is a flowchart showing the operation of the apparatus of FIG. 3, and FIG. 15 is a flowchart obtained by partially modifying the flows of FIGS. 12 and 13. 1 ... Release button, 2 ... Liquid crystal display section, 3 ... Shooting mode setting button, 16,18,20,24,26 ... Shooting mode display section, MC ... Microcomputer.

Front Page Continuation (72) Inventor Hiroshi Ueda 2-3-13 Azuchi-cho, Higashi-ku, Osaka Prefecture Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Nobuyuki Taniguchi 2-3-3 Azuchi-cho, Higashi-ku, Osaka City, Osaka Prefecture No. 13 Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Ikushi Nakamura 2-3-3 Azuchi-cho, Higashi-ku, Osaka-shi, Osaka Prefecture Osaka International Building Minolta Camera Co., Ltd. (72) Inventor Michihiro Iwata Higashi-ku, Osaka-shi, Osaka 2-3-13 Azuchicho, Osaka International Building Minolta Camera Co., Ltd. (56) Reference JP-A-58-7616 (JP, A) JP-A-60-168124 (JP, A) JP-A-54-107340 ( JP, A)

Claims (4)

[Claims] 1. A camera having a plurality of shooting modes including a normal shooting mode, a switch operated when setting the shooting mode, an output means for outputting an operation signal according to the operation of the switch, and the operation described above. Counting means for counting signals, display means for displaying a photographing mode according to the count value of the counting means, designating means for designating a photographing mode according to the count value of the counting means, and count value of the counting means Limit detection means for detecting that the count value exceeds the limit, exposure control detection means for detecting that the exposure control has been performed by operating the release button, and when the limit detection means detects that the count value exceeds the limit. , And when the exposure control detection means detects that the exposure control has been performed by operating the release button. When the shooting mode switching device, characterized in that the data corresponding to the normal mode instead of the data stored in said counting means and a preset means for presetting the said counting means. 2. The normal photographing mode is a photographing mode in which a constant light photographing is performed when the exposure time for which the subject brightness and the film sensitivity are shorter than a predetermined exposure time, and a flash photographing when the exposure time is long. An apparatus according to claim 1. 3. The apparatus according to claim 2, wherein the other photographing mode is a self-timer photographing mode. 4. The apparatus according to claim 2, wherein the other photographing mode is a continuous photographing mode.