JPS6028634A - Camera - Google Patents

Abstract

PURPOSE:To omit an unnecessary operation by providing a means, which outputs a read signal of data on a film vessel when a rear cover is closed, and a means which erases the read signal when the read is completed and performing the read operation only when the rear cover is closed. CONSTITUTION:When a switch RCS is opened by closing the rear cover, an FF RF1 is set, and an interrupt signal is inputted to a terminal itB. Then, data on the film vessel is read into an input/output register IOR in a microcomputer MCB by the operation of a circuit SCA, and its contents are set to a register CAR. It is discriminated whether data is added to the vessel or not on a basis of the state of bits of the register CAR, and data on the film vessel or manual set data is sent to a display circuit DPC. Simultaneously, the FF RF1 is reset, and the interrupt to the terminal itB is permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a camera capable of using film in which film data is provided in a film container so that data on the film can be read out by electrical means.

Prior art: l) A conductive part and a non-conductive part are arranged in a box shape on the outer peripheral surface of a film container to create a predetermined coded state,
A system has been proposed in which the film sensitivity and number of films can be expressed by the contents of the code.

An object of the present invention is to provide a camera that can automatically control the exposure of the camera by reading the film information provided on the surface of the film container as described above.

SUMMARY OF THE INVENTION In this invention, data provided on a film container is detected by a detection means. When the back cover of the camera is closed, a read signal is output from the read command means, and predetermined data is read and stored in the storage means.

Based on the contents of this stored data, the camera is equipped with
It is determined '111 whether or not the film container that has been loaded has data. If it is determined that the film has data, the control means performs exposure calculation control based on the data stored in the storage means. The stored data is also displayed on a display means.

When data reading is completed, the read signal is erased.

leaving the place An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is the camera body, 2 is the release button, and when the release button 2 is manually pushed to the first step, it is a photometering switch S1 that instructs photometry, and when it is pushed to the second step, it is turned on and operates the shutter. The camera is also equipped with a release switch S1.

3 is a mode changeover switch using a slide switch, P is a program mode, S is an exposure time priority automatic aperture mode, M is a manual mode, and A is an aperture priority exposure time automatic mode. 4 is a display device on which control exposure time, aperture value, and film sensitivity override data are displayed. A display example of the display device 4 is shown in FIG.

5 is the aperture value setting key, 6 is the shutter speed setting key, ? ,
8 is an amplifier key and a grand key for changing the aperture value F and shutter speed SS. 9 is a counter display window in which the frame number of the film is displayed.

10 is an ISO mode key. When this ISO mode key is pressed, the ISO data used in the main body 1 is displayed on the display section 4, and the ISO data can be changed using the up key 7 and the down key 8. becomes possible.

11 is an override key, and when this key is pressed, override data is displayed on the display section 4, and the amp key 7. At step 8 of D1 key 8, the override data can be changed. 12 is a recall button,
The meaning of this key will be explained later.

13 is a film information display window provided on the back 13 of the camera body 1.

As shown in FIG. 2, inside the camera body 1 shown in FIG.
Code reading piece Is for reading data, 16
is provided. The contact pieces 15 and 16 are formed on the outer peripheral surface of the film container 14 as shown in FIG.
A plurality of contact pieces AT2 to AT6 contacting the hood' electrodes 1 to 10 in column and row 6, respectively. FT8. FT9. F.T.I.
It has O, RTII, and RT12.

Each of the contact pieces AT2 to RT12 is fixed to a column 18 made of an insulating material and provided upright within the camera body 1 with screw caps.

The film information display window 13 is provided at a position corresponding to the film container 14, and is provided with a convex lens 20 having an appropriate length and appropriate magnification.
are fixed to the opening 21, and light shielding members 23 and 24 made of maltbrene or the like are fixed on both sides of the opening 21 so that external light does not reach the film through the convex lens 20.
The front ends of the light shielding members 23 and 24 are adapted to be in close contact with the outer periphery of the film container 14.

Further, a light (LiH1+L) control film 25 for blocking oblique light is attached to the surface of the convex lens 20 on the film container side.

Instead of the light control film, as shown in FIG. 6, a diaphragm 26 made of a shielding plate may be provided at both 111) ends of the convex shank 20.

FIG. 6 is an optical path diagram showing how the information a of the film container 14 appears enlarged as shown by a'. The solid line shows the optical path when viewed vertically, and the broken line shows the optical path when the eye is turned sideways from the vertical line. Designed.

FIG. 7 shows the light flux entering the contact point between the light-shielding portion 23, 24 and the film container 14. The solid line is the light beam that clearly illuminates the information on the film container 14, and the broken line is the light beam that illuminates the information on the film container 14.
, 24 and the film container] 4, and the dotted line indicates the luminous flux entering the joint surface between the film container 1
・[It shows that more light enters the top.

FIG. 4 shows an optical path diagram when the light control film 25 is placed between the convex lens 20 and the film container 14. Although only the luminous flux when viewed vertically is shown, this is similar to the effect described in FIG. 6. However, since the light control film 25 is used, when the eye is moved to the side, the brightness of the screen gradually decreases in accordance with the angle of movement.

In the 5th M, the χ ray is a light beam that irradiates information on the film container 14, and the broken line is the film container 14 and the light shielding member 2.
3.24 shows the luminous flux that enters the junction surface. however,
Not all of the luminous flux shown here enters the film container] 4. Due to the characteristics of the light control film 25, approximately 100% of the vertically incident luminous flux is transmitted, but as the angle increases, the light gradually decreases.

FIG. 8 shows the structure of the light control film, in which rectangular light-shielding plates 30 are arranged in the film. Therefore, from the direction 2 of the light shielding plate 30, approximately 10
0% of the light passes through or it is difficult for light to pass from the tilted direction 3.

When the configuration shown in FIGS. 4 and 5 is adopted, the film container 1
4. It is possible to reduce the potentially harmful light flux entering the joint surface of the film container 14 and the light shielding members 23 and 24 without affecting the visibility of the information on the screen.

As shown in FIG. 9, inside the camera body 1, there is a back cover opening/closing detection switch 3 which is turned off when the camera back cover 33 is closed and turned on when it is opened, and a film counter 3...1. It is opened and closed by a lever 36 operated by a cam 35 of a counter switch 34, and is turned on when the count value of the film counter is S~] and turned off when it is 1 or more.

FIG. 10 is a block diagram of the entire camera system to which the present invention is applied. (BAB) is camera honjo no ka 114
It has 4 batteries. (C13) is a capacitor for the H/Q amplifier, which is connected to the power supply battery (C13) via the diode (1) (1).
[3A l3) IJI-column connection & ij, power supply battery (
Even if [3AB) is removed, power is supplied from the power supply terminal T-(~C) for a certain period of time (for example, 5 minutes). (
p (-) l ) is electric71≦1 battery (13A 1.3
) is removed, and the Bankanov ``electronic j+!'' by the ``ζ condenser (CB) is removed.
Jjiot'+jLl'! When power is supplied from the + line (\C) or both sides are opened, connect power A/receno 1-13 to b and node 1 (1'l).
<1) Power output, power output, and reset circuit.

(MCI() is a microcomputer (hereinafter referred to as microcomputer) that controls the movement of the system and the body.

The operation of this microcomputer (MCI3) is shown in Figure 1L and Figure 12-
This is shown in Figures 1 to 4 and 70-chart in Figure 13. (
Sl) is a photometric switch and is closed when the release button 2 is pressed in the first step. (Iss) is the ISO remote key (1o
), and (OR3) is opened by pressing the override key (
This is a switch that is opened when the button 11) is pressed. (FSS)
is a switch that is closed by pressing the aperture value setting key (5), and (SSS) is closed by pressing the exposure time key (6). ((Month-)S) is the up key (7), (1) OS
) are switches that are closed when the town key (8) is pressed, and (1te1:', S ) is a refurbish switch/(
12) is a switch that is closed when pressed. These switches are connected to the output terminals of the microcontroller (MCB) - (02), (
03), (04) and input terminals (il), (i2), (1
A key matrix is configured in 3), and the closed switches are separated by 1 by the microcontroller/(NIC13).

When this microcomputer (jcIJ) is in the operation stop state, the terminals (02), (03), and (04) are in the state l-1iBl+, and the line connected to the input terminal (11) is connected to the AND circuit ( It is input to the interrupt terminal (iLA) via the OR circuit <0RI), the AND circuit (AN3).Therefore, it is input to the interrupt terminal (iLA) via the OR circuit <0RI). Switch (OR8)
When it is closed, an interrupt is generated at the terminal (itA)I, and the microcomputer CMCB) is activated.

CB1\4S) is the main switch, and when this main switch (BMS) is opened, the output of the inverter (N2) becomes ``I, I+'', and the microcontroller (MCB) stops operating. Furthermore, the AND circuit (AN3) becomes disabled, and the interrupt signal to the terminal (il, A) is not input manually, and the microcomputer (MCB) is not activated.

Furthermore, if the power supply battery (B A B ) is removed and power is not supplied from the line (\pat;), the AND circuit (ANTI) becomes disabled and no interrupt is performed. Therefore, the power battery (B A I-3) is not installed or the main switch (131LIS) is not installed.
If it is open, the microcomputer (84C13) remains in an inactive state.

The switch (S2) is a switch that is closed when the release button (2) is pressed down (2 steps 1). When this release button switch (S2) is closed, the inverter (IN3)
) becomes “Higl+”, and the AND circuit (AN2
), an OR circuit (0171), and an AND circuit (AN3) to input an interrupt signal to the terminal (itA). When this interrupt signal is input, if the shirt tarciano is completed and the calculation of exposure control data is completed, the exposure control operation is immediately started. In addition, the release button switch (S2
), when the microcomputer (MCB) is exchanging data with other circuits, the output of the OR circuit (OR3) becomes ``Hiε11'' and the output of the AND circuit (AN2
) is disabled, so no interrupt is performed.

The switch (RC3) is a back cover switch that is closed when the camera back cover (3) is opened and opened when it is closed. Therefore, when the back cover is closed, the inverter (IN4)
The output of “HigI+” becomes “HigI+”, and the one-shot circuit (O
A pulse is applied from 31, ) to set knob 79 and knob 70 (RFl, ), and an interrupt signal is input to the terminal (itrJ). Then, the microcomputer (MCB) performs the operation when closing the back cover, and when this operation is completed, the terminal (018)
Output a pulse from 7 limp/70 amp (R1”I)
will re-center and the operation will stop.

(LE) is an interchangeable lens and connector (CNF).

(CNBI) is electrically connected to the camera body,
Data such as the aperture value that is fixedly stored in the circuit (LE) in the lens is serially read into the microcomputer (MCB) via the interface circuit (130L).This operation is performed when the microcomputer (MCB) (05) as “HiBl”
+” and execute the serial person output command, 8 cronk pulses are output from the serial cronk pulse terminal (sep>).Then, this cronk pulse has the same Then, this data is read from the serial input terminal (SIN).
By repeating the U column command several times, the necessary data from the mother is read from the mother.

(CAI)) is a coat pattern circuit that outputs the data of the coat pattern provided on the film container (14)-1-, and (ENv) is a code that outputs data corresponding to the set exposure control mode. The plate (SPC) is a counter switch (corresponding to FIG. 9, 32) which opens when the film counter is in the preliminary winding position and opens when the film counter is in the photographing position. (SCA) is an ISO standard based on the coating pattern.
This is a circuit that serially outputs data such as the status of the controller, power controller, controller (SFC), etc. to the serial input terminal of the microcontroller (N/IcB). A specific example of this part is shown in FIG.

In FIG. 15, a coat pattern DO is provided on the film container (14). The portions marked ① and ② are conductive portions of any film container, and in this embodiment they come into contact with the grounded electrode (COT). ■The ISO of the film in the film container (14)
A conductive/non-conductive pattern is provided depending on the data corresponding to the sensitivity, and this example is shown in Table 1.

The first side of this ■
) is in contact, and this contact is connected to a serial data output circuit (DSO) via a pull-up resistor and an inverter. A food pattern corresponding to the number of frames of the film (60) stored in the film container (14) is provided in the portions (1) to (0). This part is contacted by the contact pieces (F'"s), (FT9), and (F'I'IO), but in this example, this data is not used, so the contact pieces (1 and I'8) are contacted. ), (F T9), and (F' January 0) are not manually input to the serial data output circuit (DSO).

In the OIO section, there is provided data on a range of exposure values that are considered to be appropriate exposures centered around the exposure value corresponding to exposure t (hereinafter referred to as range data and Of).

This coat is shown in Table 2.

There is a contact piece (17Tll) in the OIO part, (Ima publication 2)
The signal from this contact j1 is passed through the pull-up resistor and inverter to the 1m column data output circuit (1゛).
SO) to human power → -ru. .

(MTI), (MT2), and (CMT) are foot plates for data output in exposure calculation mode, and this code plate 04Tl).

(MT2), (CMT) J2 to J? i-mobu kidnapping (\“T”)
moves according to the mode setting with the mode switch/h :).

If the sliding part shrine (\'i') is at the position (I-'), it is in program mode, and if the data of "00" is at position (S), it is in exposure time priority mode (hereinafter referred to as S mode). ,,
If the data of 01゛ is in position (A) in iζ), it is in aperture priority mode (hereinafter referred to as A mode), and if the data is in position (M), it is in manual mode.
"11" data is input to the serial data output circuit (DSO).

In this case, the signal inputted from the film counter switch (SFC) via the inverter (INS) is also manually inputted to the serial data output circuit (1') SO).

The counter (CO2) is connected to the terminal (06) or “I-1i B
When it becomes "L+", the reset state is released and the rising edge of the clock pulse from the serial clock terminal (sep) is counted.Then, the terminal (07) becomes "L+".
ur" rubber contact piece (A'V2) - (Ar1), (RTI
The 7-bit signals from I) and (11T]2) are sequentially output in series, and the microcontroller (MCB) connects the serial input terminal (S
IN) and sequentially in synchronization with the falling edge of the output tarlock pulse. On the other hand, terminal (07) is "' l-
1i gI+'', the exposure calculation mode data and the 3-focus signal from the film counter switch (SFC) are sequentially output and read into the microcomputer (MC13).

In FIG. 10 again, (FL) is a 7-inch light emitting device, inside which is a power battery (BAF), a light emitting device, and a control device. :jl1 circuit (F]-C), and also a main switch (EMS). The first concrete example of the circuit (F I-C) is
This is shown in Figure 7. A specific example of this will be described later. The flash device (Flj) is equipped with a connector (CNF), and when the flash device (FL) is attached to the camera body, it is electrically connected to the connector (CNB2) and data is exchanged with the control circuit (FCC). , light emission amount control, etc. A specific example of the control circuit (FCC) is shown in FIG. 16, and the details will be described later.

(LMC) is a photometric circuit, and the photometric output of this photometric circuit (LMC) is input manually to the analog input terminals () to Nl) of the microphone, and the reference potential for L) A conversion is input to the terminal (VRI). It is man-powered. (1) P C) is a display circuit, which includes a liquid crystal display (LDP) for displaying data and a light emitting diode (F L l) for displaying flash photography.
and drive. Display circuit (DPC) is terminal (010)
takes in the display data output from the terminal (Sou) to the terminal (Sou) of "l(igl+") and performs a display based on this data.The details of this display section will be described later based on FIG. 20.(RLC) It is a release circuit, and the terminal (012)
The exposure control mechanism is unlocked based on a pulse from the exposure control mechanism.

(APC) is an aperture control circuit, and this aperture control circuit (
APC) reads the number of aperture stages data sent from the terminal (SOU) when the terminal (013) is open to "141g1+", and when the actual number of aperture stages matches the read data, stops the aperture of the camera in question. Let me,
Determine the aperture aperture. (TIC) is an exposure time control circuit, in which the terminal (014) reads the exposure time control data output from the terminal (SOU) between 11) (i gl, I+) and closes the current switch (B3). The shutter opening operation is started after a time corresponding to the data read from the time when the shutter opening operation has elapsed.Furthermore, when the release signal (RLS) is output, the terminal (TIE) becomes "High", and the shutter opening operation is started and the shutter opening operation is constant. time (e.g. 5
0 + n 5ee), it becomes "1., ouI".Next, paste it on the 70- chart in Figure 11,
The operation of this system will be explained. When the power supply from the terminal (~'C) starts, the power supply to the microcomputer (MCB) starts, and the microcomputer (MCB) performs the initial resen 1 operation. In addition, the power-on reset signal (1'R]) sets 7 limp/70 limp (R1-'1), and also resets the display circuit (DPC) supplied with power from the terminal (VC). .

The microcomputer (MCB) sets the output terminals (02) to (04) to H.
i8h'', (01), ((,)5) ~ (017: l is ``pounding on the ground'' and waist. ] / a
o see), AV old-AV l-< 3, constant aperture value data Av1+ (e.g. l' 5. (i)
is set. Each register is originally set to the data shown in the table below.

Next, the register 5VR2 contains the commonly used ISO data 5vn.
(For example, set IS (month 00), and then in step #1 set the data "16+1" in the 2-star S VR]. Here, the data read from the film container (14) However, -L movement setting data is set in 5VR2. When the back cover of the camera is closed, 7 limp/70.p ("<1/"1) is set, and the end T ( i
As soon as an interrupt signal is received at t, B), the operation starts from step I1. , l:, 7X, 5VRI, 5VR21i: 8bi.

and each bin) is 16.8,4°2 from the third bit,
Ll/2. ]/'L 1/8 weight A'' injury is being performed. And the film speed is the apex value]/
It is designed to change in units of 3Ev. Therefore, the decimal part of the sensitivity of the film sent to the camera is /3
If 1, 4.2.ノ3 is 374(=]/'4+1/
2) is approximated. Therefore, in step #1, register 5
The IGH set in VR1 corresponds to 5v=2-f.

Next, when the terminal (06) is set to "High" and serial input/output operation is performed, the circuit (SCA) operates and the data from the food pattern veri~■, O4O part on the film container (14) is activated. is output in series and the microcontroller (MCB)
The data is read into the input/output register IOR inside. Next, close the terminal (06) and connect it to the input/output register I.
Set the contents of OH to register CAR. Therefore, the data shown in Table 4 is read into register CAR. In Table 1'+1, 2 to 12 indicate the conductive parts in patterns 1 to 0 of the film container (14).

By the way, as shown in Table 1, in the case of a film container provided with a food pattern, one part is necessarily a conductive part. Therefore, in step I1 (Monday, #IU2), determine whether "1" is read in either the focus CAR4 or CAI3 in register CAT,
If 1 is not read in any of the bits, it means that the camera is equipped with a film container without a hood pattern or no film container is installed.In this case, start from step #3. 70-
to move to. On the other hand, CAI of register CAR is 4 or C
' in at least one bit of AI5.

If 1'' is read, it is determined that the film container (14) provided with a food pattern is attached, and the process moves from #2 to 70-.

In block #201 of step #2, flag CAF is set to "1". This flag CAF becomes "0" if data from the film container is not read, and becomes It I 11 if data is read. . After step #2, CAI6. If both bits of CAI5 are "0", data of 1/2Ev is set in registers ERR1, ERR2. On the other hand, CAI6. CAI5 bit is '
01” is register ERRI.

ERR21 is 11": If the data of v is "10", the range is 2Ev for ERRI, and iEv for ERR2.
, "11", data of 3Ev is set in register ERRI and data of IEv is set in ERR2. Register E RRl is set to + side range data ERR2 is set to one side range data,
The data to be set are as shown in Table 2.

Next, film sensitivity is set based on the read data. This behavior is shown in Fronke well 202,
First, the focus state of CAI4° and CAI3 of register CAR is determined. And “11 is that””t)
d li",'"]0", add "04H", 0]", add "02 II" to the contents of register SVR1. Therefore, if the decimal part is bin 1 or 11, Sν=1. In addition, set it to "11ΣII" and set the decimal part to 31'4.

Also, if the decimal part bit is "10", add 5v=I/2 to make it "IAII" and make the decimal part 174, and if the decimal part bit is "01", add Sv=]/4 to ']811"
and set the decimal part to O.

Next, put Jj in block #2 f'+3 and write register C.
Add 5v=4 if A R's biy 1CAR2 or 1, 5v=2 if CAI is 1 or 1, and Sv=] to the contents of register SVR] if CARO power bow. The above operation is l50
This will be explained by taking as an example a case where 400 film containers are attached to a camera. In this case, as shown in Table 1, ■
, The part marked ■ is a conductive part. And register C
In AR, bits CAR3 and CAR2 are “1”,
CA R4, CA l old, CARO or "+1". Therefore, register 5VRI contains 2211 or +9. It became 'A 8 II. This data becomes 4 + 2 + 1 - 7 according to the definition of the weighting of each focus,
The apex value Sν=7 at 15O400.

When this film sensitivity setting is finished, the register MDR
Set the bit MDRO to "]" and the remaining bits to "0", set the contents of the register S V 11 ] to the input/output register IOR, and proceed to step #4.

Q3: A film container with a code pattern is installed in the camera.
If it is determined in step #1 (11, 102) that the
Set R7 to ``1'' and read the remaining bins) MDRO to 6.
is set to ``O''.Then, data of Ev=0 is set to the range data registers ERRI and ERR2, and the contents of the register 5VR2 are transferred to the serial input/output range register I.
Set to OR, set the 7-lag CAF to "0", and proceed to step #4.

In step #4, set the terminal (010) to 6”Highly”
, performs serial input/output operation, and transfers the film sensitivity data from register SVRl or 5VR2 to the display circuit (1
) PC). Next, data B + - D for frank display is set in the serial turnout star ■○R and sent to the display circuit (r)PC), and the contents of register MDR are transferred to register IOR. Set and display circuit (1'1l
Pc). Then, connect the terminal (010) to l1l-oI
As IIll, the flag MIF is set to "o", the terminal (018) outputs a pulse to reset the flip-flop (RF), and the terminals -(IA), (i
Stopping operation (HA 1-
, T ) state.

7lag 8 (IF is 1゛ when the ISO sensitivity is manually set 5Jl, °'O when not manually set)
It is 7 easy.

The register Ml)R is a 2' star in which data indicating the display mode is set, and the meaning of each bin is as follows. Bin) M I) 1 in 01
If the data is read from the film container (14), R5(-) is "1", otherwise it is "0", and the display shows MDI'. (0
or “B” indicates 1sO as shown in Figure 4 (B).
A is displayed.

If IV, 'l D RO is "o", then Figure 4 (C)
As shown in , "M" indicating manual ISO is displayed. MDR1 is "1" when the exposure time is displayed on the display section, and "0" when the ISO data is displayed.

Therefore, if MDRI is "1", "ss" and exposure time are displayed as shown in FIG. 4(A), and Ml) RI
If is '0', as shown in Figure 4 (B) and (C),
“Iso” and ISO data are displayed.

When MDR2 and MDR3 display override data, it is 01゛ if the override data is on the + side, and `` if it is on the - side.
10゛, override data written], when displaying override data it is “11゛, and when not displaying override data it is 00゛. Therefore,
M l) If R2 and 3 are "old)", no display regarding override will be made, and if R2 and R3 are "()1", then the display shown in Figure 4 (
As shown in 1)), the override symbol "+/-" and "10" are displayed in front of the override data, and if it is "10", the symbol "10/-" and "-" are displayed in front of the override data.
If it is 11", the symbols "+/-" are displayed, and 0 is displayed as the override data, and neither "°10" nor -" is displayed in front of that data. 1. If the symbol "+/-' indicates the exposure control value, %"Q, M l) R2,:1 it"'
tl ] ”, ” IIO+1i: The number is displayed.

MDR4 becomes ``1'' when displaying the F value, and becomes ``0'' when not displaying the F value. Therefore,
When it is P1...[As shown in Figure (A), "F" is displayed, and JJ of "0" is ff54 Figure (13), (
c), (D) f: As shown, F"" is not displayed. When MDR5, MDI<6, a signal indicating the display mode of the light emitting diode (I・"l l)) that displays the status of the 7 system device is set. When 7 system system is the camera Honda has no lobes '1 (1・L)
l') ) is off. When it becomes "El", it flashes at 211z to indicate that the 7 battery device is installed and is in the power supply state.When it becomes ``El'', the 7 battery device i7 (indicates that it is fully charged). light emitting diode
F (1? L l)) lights up, and when it is "II" it indicates that the dimming has been completed, and the light emitting diode (FLI)) blinks at 8I-Iz. When MDI<7 is "1", the entire liquid crystal display section flashes at 2l-1z, and when "()", it lights up.

Next, the 1011th operation will be explained based on the flowcharts of FIGS. 111.2 and 3.4. Main switch (B
When either the photometry switch (Sl), IS○S switch (ISS), or overwrite switch (OR8) is closed when the power supply battery (BAB) is installed with the M S ) closed, The operation starts from step #5 by manually inputting an interrupt signal to the terminal (iLA) via the AND circuit (AN3). First, it is determined whether the content of flag CCF is "1". This flag CCF is "1" when the exposure control data has been calculated, and "O" when it has not been calculated.When the exposure control value is calculated, an interrupt is sent to the terminal (iLA). The operation when the signal is manually generated will be described later.

When the 7-lag CCF is “0”, connect the terminal (01) next.
"High". By doing this, Trannosta (B'
rO) becomes conductive and power supply starts from the line (VB).

Furthermore, the AND circuit (ANI) becomes disabled, the AND circuit ()\N2) becomes active, and the signal from the release switch (S2) is sent to the terminal (itA) as an interrupt signal.
becomes the input state. Next, connect terminals (03) and (04) to It
By setting it to l-owll, only the terminal (02) is set to "l"
-1i 8b" and determines whether the terminal (11) is "N igM'. And terminal (11) is ll181+
``If so, an interrupt was performed when the photometric switch (Sl) was closed, and 7 lag 1- lVq IF'
Set the terminal (02) to II J-owll. If the switches SST, ISS, and OR3 are open and terminal (11) is set to ``Low'' in step #7, then only (03) is set to ``High''.
” and connect the terminal (11) or “Higl+” to 1'
Separate.

, 2 is "Igll". This is the case when an interrupt is performed by ISOS IS (Iz8), the flag l S l' is set to "I", and the end r (11) is set to II.
i, owl is overwrite switch (ORS)
This is the case when the flag is 0.
Set 1<1-' to "B" and connect terminal (01) to "O".
uI'' [t multiplex in step #8.

In step #8, set the terminal (05) to "' Hi gl+
”

Then, data from the lens (LE) is read by performing serial input/output operations a plurality of times (a predetermined number of times), and the read data is sequentially set in a plurality of registers LDR. When this operation is completed, the terminal (05) is set to II low, and the terminals (06) and (07) are set to " ](i 8h").

After this operation, serial input/output operation is performed and the code plate E
The mode signal applied from M and the counter switch (SF
Read the signal from C) and set it in register MOH,
Set terminals (06) and (07) to lLoIIIll. The state of the film counter and the exposure control mode signal have now been taken into the lenser MOR.

Next, set the terminal (09) to °”I (iBl+) and the terminal (
08) outputs a pulse of 50μsee rlj.

Then, the input/output register IOR is “Ot) II”
After setting the data, perform serial input/output operations. Then, as will be described later, data from the 7-runchie device (do1-) is taken into the register IOR, and this data is set in the register FDR. Then, set the terminal (09) to “Lo”
u+” and move on to step #9.

In step #9, 1 (A power is converted from A to D,
Next, A-1) Weird I! /! The terms of the aperture value Aν0 and the aperture metering error Avc included in the data are expressed as lens (
to remove based on data from (
Bv-A'vo-Avc)+Avo+Avc'' Bv is calculated and the data of the target'lf salary λ·[degrees is extracted.

Next, the contents of the 7-lag CAF and MJF are determined, and the ISO data is extracted from the film container (14).
If manual setting of SO data has not been performed, CA F = 1 in step #S01, go to 'I5]02'.
I I”=() and 1′ set at 1°C, film container <14
) is used.The contents of the register SVRI, which is set with the ISO data taken from 5c from ), are used. - force, step #90.1 with CAI or 0 with IS from the film container
O data is not read, or even if it is read, manual setting is performed, and M is set in step 39 C12.
I IF"=, ] If you try to set 1', you can use the automatically set regular ISO data or the manually set I SO data.
The contents of the register 5VR2, which is set to ν when the SO data is set, are used to calculate Bv+(SVRI)=Ev or Bv(SVR2)=Ev to calculate the exposure value Eν.

Then block #9 (register M l at 13)
Iλ via) Contents of MDR2 and MDI73'” (
If it is '01', it is an override of 1 + 11111 as mentioned above, and the Ev value is calculated by subtracting the + side override data or the contents of the set REN'star 0RRI from the exposure value Ev. calculate. MDR2,
If the content of 3 is not "01", then it is determined whether it is "II)" or not. The Ev value is calculated by adding the contents of the register 0RR2 set to the exposure value [V.

When the above operations are completed, the process moves to step #10, after which the exposure control data resting operation is performed. #1()
In step 1, check whether it is P mote or not! Apart from that, if it is P mode, the following is the calculation for P mode steady light'ff8 shadow, 7
Performs the calculation for lash light photography and sets the flag DCI'l to "
() ゛ Set and pestle] Move to step 2. Here, 7lag I) CF1 is a flag that becomes "i" when the set aperture value or set exposure time is changed, and becomes ``()'' when there is no change. Since data changes cannot be accepted, the flag I') C
Fl becomes ``0''.

If it is determined in step #10 that it is not in P mode, the process moves to step #1G? Check whether it is in A mode or not.
11 separate. If the mode is A, the aperture setting can be changed, so this data change operation is performed first. Flock 160, first connect the terminal (02) with "1li8"
1+" and determines whether the terminal (+2) is "IIE1.n" or not. If the terminal (12) is "H1g1s', the aperture setting switch (FSS) is opened. And next, if the terminal (13) or "H181s" is 1' and Ribetsu's waist is "ll18h", then amplifier Suinona (i
ll's) is closed. In this case, set the terminal (02) to "'Loud" and
In step 61, data change operation for the small pattern side is performed. That is, it is first determined whether the contents of the register AVR3 to which the set aperture value data is set are on the open side compared to the aperture value data AvO from the lens (LE). When the data becomes ν on the open side of the open aperture value Avo (this happens immediately after changing the lens), set the contents of register AVR3 to l\vo and move to step #13. . Register A ■Contents of R3 or released from AVO+
If it is not equal to AVO, then determine whether it is equal to AVO), and if it is not equal, add 1/'2 to the contents of lens star AVR3. Then, the contents of register AVR3 are the maximum aperture value data from the lens (LE) A Vbl J
: Subtract 1 to determine whether l) is also a large aperture value, and if it is large, the maximum aperture value Avm is stored in register AVR3.
Set the step and move to the step of well 13.If it is not too big, move directly to the step of well 13.

Here, data dAν will be explained. There are various values for the open aperture value of interchangeable lenses.
=0.5.1.0.1.5,2. t, +・), and there are also b) and 1 in 0.5Ev units (for example, F2.S(Aν=2.64)l F3.5
(Av=3.61), Fl, 8 (Av=], 7), etc.).

By the way, the aperture values set on the camera side are in a series of 0.5Ev units, except for the maximum aperture value. Therefore,
If the maximum aperture is not set in 0.5Ev units, the value dAν from the maximum aperture to the next set aperture is smaller than 0.5Ev.
The value changes by fl, 5Ev, and from then on, it becomes (1
, 5IEv each to the small aperture side.

Therefore, for a lens of Fl, 5, dAv=0.36. F3
．． 5 lens, dAv=0.3! ), Fl, 3 lens has a dAv2 of 0.3.

70 at the timing of terminal (02) or "' Hi 86"
If it is determined in step #16() that terminal (13) is not "ll16h" and that the ambush-inner (tJIi's) is not closed, the process proceeds to pro/re #162 and terminal (
03) only to "High 11" and check whether the down switch (DO8) is closed or not depending on the state of the terminals (i:l), and whether the down switch (DOS) is closed or not. When it is determined that there is a
Subtract 172 from the contents of , determine whether the result of this subtraction is on the open side of the open aperture value AVO,
If the value is on the open side, the open aperture value Av0 is set in the lenses A to R3, and the process moves to step #13.

In step #13, the flag DCFI is set to 1 to 1 to indicate that the configuration data has been changed, and
Move on to step 4. On the other hand, the aperture switch (FSS
) is not closed or the up switch (UPS
) and down switch (1) O8) are not closed, the data is not changed and step #16
In step 3, the flag DCF1 is set to ``0'' and the process moves to step #14. In step #14, calculations for steady light photography in A mode are performed, and then step 7 in t\mote is performed.

After performing the calculation for flash photography, the process moves to step 12.

If it is determined in step #16 that the mode is not A mode, it is determined in step #17 whether the mode is S mode.

Then, when it is determined that the mode is S mode, the step well 171. At step 172, it is determined from the state of terminal (12) whether the exposure time switch (SSS) is open. Then, when it is determined whether the exposure time switch (SSS) is not closed, the step well 173 is opened.
Set the flag DCF1 to '0'1 and repeat step #]8 once. - If it is determined that the force and exposure time switch (SSS) is closed, step 917
At L well 175, it is determined whether the up switch (Ul) S) is opened or not. If the up switch (Ul-'S) is closed, the set exposure time data is set in step #175.
[Add 1 to the contents of <3. This addition9. It is determined in step #176 whether the result is greater than the longest exposure time data 1'v+o or not. Stemp #Via'7te/7lug I) CI-
Set 'It2' to 1' and move to step 18.

If the up switch (V'S) is not closed, then check whether the up switch (1') is open or not.
□Do. And Gunnsui Nochi (DO8) closed IIi
, if so, in step #17 ”:) subtract 1 from the contents of Renostar TV R3, determine whether the subtraction result is a value longer than the maximum exposure time Tvo, For long-term sharpening, use 'rVO to renosta'
Set r v + < 3, leave it as is if it is not for a long time, and set 7 lag 1) CFl to "1" and #18
Go to step 1 and complete.

When the exposure time switch (SSS) is not closed,
Or up switch (tJPS) even if closed,
If both down switches (DO3) are not closed, the flag DCFI is set to '0' and the process moves to step #18. In step #18, calculations for steady light photography in S mode are performed, and then Perform calculations for flash photography in S mode and move to step 1 of well 12.

Step #17 is not in S mode! The separated mode is M mode, and in this case, there are 6 to 111 functions including changing the aperture value data and changing the exposure time data.
The calculation for steady light photography in mode and the calculation for 7-lash light photography in N1 mode are performed, and the process moves to step #12.

In step #12, the calculation of the exposure control data has been completed, so it is possible to shift to the exposure control operation, and the flag "CCI" is set to "1".Then, the terminal (iLA)
(il) enables an interrupt operation using an interrupt signal. Next, based on the data from the 7-lack device (FL), it is determined whether the 7-latch device that is being powered is installed or not. Set IMI) R5, Ill and DR6 to "(ltl)" and move on to step #19. When there is a mounting signal, it next determines whether it is a dimming operation completion signal (hereinafter referred to as FDC signal) or manual input. If the FDC signal is manually operated, the ranger MDR pin 11V11) I will be 5+.
6 (Set '11' and move on to step #19.-Tsuba I-゛I) If the C signal is not input, next check whether the charge completion signal is input manually or not by 1'1j. If the charging light J signal is input, 81DR5,13
is set to ``ltl'', and if not manually set to ``01''.

In the #19 stencil, set the ring 1ii-1'-<09) to
-1i gh" l Then, the data is transferred from the camera to the 7 lash device (PL). In step #20, a pulse of 100 μsec is output to the terminal (OS). Next, in block #210 , flag C
From the contents of A F, determine which of the ISO data set in registers 5VRI and 5VR2i is being used from the contents of '+ IF, and set the data of the register being used in the input/output register IOR. , and further outputs the contents from an analog signal output terminal (ANO) via a DA converter. Subsequently, a large input/output operation for column ia is performed.

Next, a film container (1
4) Flag CAF whether it is attached to the camera
1!1j depending on the contents of the
d", the contents of register ERII) and ERR2 are set in register IOH, and the process moves to step #22.

If the film container provided with the code pattern is loaded in X1, the terminal (017) is set to "High", and then it is determined whether the contents of the register ERRI are 1 or 2 by 1'-2.

If it is 1/2, connect terminals (015) and (016) to It
L θ, I+, register E RR bin) ERRI
, ERR2 is set in the register IOR, and the process moves to step #22. E RR] content is 1.・If it is not 2, then it is determined whether it is 1 or not, and if it is 1, the terminal (01
5) to “L.

゛, ((]6) is l-1iBb''.] If not, then 1'-separate whether the content of ERR] is 2, and 2
If terminal ((')+5)t'']li Fil+'', (0
16) to l l-oIllll, and if it is not 2, it is 3, so ((',) 15), (016) is "l1i81+"
Make it. Range data and terminals ((month 5), (016), (
The relationship (')17) is shown in Table 5. In step #22, serial input/output operation is performed to send range data to the flash device (P L ). Next, 7
Rancieux 41. ) Set the contents of the register AVR2 where the chromatic aperture value data is set to the register s or r< and send it to the C Franche instrument jfi, and transfer it to the register 'F\"R2 where the exposure time data for flash photography is set.
The contents of are set in the register IOR and sent to the 7-Lassortment device. Next, among the data from the lens (LE), the contents of the register LDRf in which the focus V (information data) is set are set in the lens register IOR and sent to the flash device, and the terminal (09) is set to "'". The Lo river is used. The above is the data transfer operation to the 7-lane system.

In the next step #24, ``is 7 lag ISF or is ``1''.
Determine whether it is a pa. If it is "1", this means that the ISOS switch is closed, and the process moves to step #27. On the other hand, if it is "0", it is determined in step #25 whether the 7-lag ORF is 1. If it is "1", it means that the override switch (ORS) is open, and the process moves to step #29.On the other hand, if it is "0", the contents of MOR2 are determined. If it is "l)", then the film counter switch 7 (SFC) has been applied 1311 and the film counter has not reached the position 1 (the position of a film frame that can be photographed), so the process moves to step #28. #2G
At step 1, the focus of 40R is 840R2 or 6゛1'' to Renostar, and the film counter switch (S[''
When it is determined that C) is open, in this case, the process goes to 70tsuku #261, and since the mode is to display the exposure control value, the bit M I) r (If it is 2, 3 or "11" then "
Set OO゛', MDl, < l and Ml) and set R4 to 1゛. As a result, the +/- symbol will not be displayed unless an override is performed, and the I- and SS symbols will be displayed on the display device LD.

Next, check whether the charging completion signal is manually input υ) or not.
Separately, the charging completion signal or the 7-lanoshu device (F'L)
If the microcomputer (MCI3) is input manually, 7 Rancier photography will be able to set the exposure time (contents of register 'l゛\・l<2) and aperture value (contents of register A\l<2). It is sent in series to the display section (DI"C), and the charging is completed. Otherwise, the constant exposure time (register ′ [~゛old ↑r) and aperture value. (Register l1()
) and display F+! (+)l'C) and move to step 4↓:32 in Figure 12-4.

If it is determined in step #2.1 that the 180 switch (ISS) is closed, the ladder moves to step #27. First, recall switch (R1':S
) or closed. When the recall switch (IλES) is closed (U), it is determined whether or not a film container (1.1) with a hood pattern is attached, and if it is not attached, a flag is set.
Set to "1", set DCF2 to "0", Mll)) Ro,
1.4.7 is set to "0", and the contents of the register 5VR2 where manual setting ISO data is set are set to IOH, and the process moves to step #36.The film container (14) provided with the code pattern is attached. If it is, then it is determined whether manual setting of ISO data has been performed with 7 lacs M 1 [” or “1”. Then C, MIF?”
If manual setting is done at 1゛, move to #37 Stereo knob, set flag DCF2 to ``'t,)'', set DRO to 1゛, λ4DRL+4,7 to ``0'', Set the contents of register S R1, where data from the film container (14) is set, to register IOR,
7 Raku”Ft41 Change F to “()” and move on to step #36. - If the film container (14) with a code pattern of MIF or "0" is installed, the IS
Flag MI when manual setting of O data is not performed.
F is 1゛, DCF2 is 0゛, h DIIO, ], 4.
7 is set to "' (1), the contents of Reno Matari 5VR2, which has been set as manual setting data, are set in the register IOH, and the process moves to step #36.

Therefore, when the recall switch (RES) is closed, if a film container with a food pattern is attached and priority is given to 1,000ΦI+setting data, the data from the fill 15 container will be forwarded by 1 year. If priority is given to data such as , film container, etc., manually set items will be given priority.

Recall switch (+<t>8) at step #33
If it is separated by 1'j1, #3'7
Nose 7' Nobuni transition L Te end f(02) (7) As Mira "I-1iBl+", determine whether or not the step well:)8 Te・7 Nopusui, Chi (shi tile) 8) is closed. Then, when the 7th nop sui and su (tll-1s) are closed, next is the IS which is set to F movement in the stenoa 43fjl.
I'll determine whether the decimal part of the O data is 4 or not. And 1/4 is 1.・2, 1 if not R4,
The data obtained by adding 4 is set to Reno Matari 5 VR2. Therefore, the decimal part is 1/4 if it is 0, 3 if it is 1/4, 4.3/
'4 becomes (). That is, as mentioned above, 113'
, 1/゛4.273hi, 3/4.0-().

Then, the contents of register 5VR2 are the maximum ISO data S.
Determine whether it is larger than v+n, and if it is thicker than 5v111, set 5V11 in register S V R2, and if it is not larger, set 7 lags next to waist 1) CF2.
MIF is "1", M D I < 0. M l')
R1, MDR4, MI') R7 as "0"
The contents of the register svr<z are set in the register IOl<, and the process moves to step #86.

If it is determined that the up switch (UPS) is not closed in step #38, step #391, #
Proceeding to step 392, only the terminal (03) is set to ``11'', and it is determined in step 39 whether or not the ground switch (1) O3) is closed. And Dann Switch <DO
If 3) is closed and the decimal part of the manually set value is 374, subtract 1 by 2, and if it is not 3 by 4, subtract 1/4. That is, 3.・If it is 4, change it to 1/4, if it is 1/4, change it to O, if it is 0, change it to 3/4. Then, it is determined whether the contents of register 5VR2 are smaller than the minimum ISO data Svo or not, and if it is smaller, Svo is set to S~
'1 (set it to 2, if it is not small, leave it as is and set the flag "DC1"2.MIF, MDRO, MDR
Set R4, MD F<7 to "0" and set the contents of register 5VR2 to register IOR.

#3! If it is determined in step #2 that the inch (DO3) is not closed, the process moves to step #28, and the manual setting data or film container (DO3) that is prioritized at that time is ) is set in the renderer IORi, and the process moves to step #3G.

#3G step is to set the terminal (010) to "mountain 81.I+", then send the ISO data from month 7 to the display section (l]'C) in the li column, and then send the ISO data for the flank display. Data (+3LI')) (data that does not display anything) is set in register lO+<, and display section (1':)l'c
, l and moves to step #, (0.

Step #25 makes it 7 easy) Since it is an RF power bow, the overwrite switch (OR8)/I'
If lJl is completed and l'llW is performed, the process moves to step 29. That is, in step #↓5, it is first determined whether the up switch (UPS) is closed, and then in block #251, the amplifier switch (IJP) is closed.
S) or closed I#, M D 112. lt,
Set i D R3 to “01” and register Q RR1
Add the contents of 1 to 112. And the maximum direct 0DI
Determine whether the contents of 0RRI exceed Q by setting Q, and if it does, set ODm to register 0RRI; if not, leave it as is and set 7-lag DCF to "1" in step #41. Proceed to step #43.

If it is determined in step #45 that the up switch (UPS) is not closed, the process advances to step 7 well 46, where only the terminal (03) is set to 'i B b '' and well 4 is closed.
At 61, it is determined whether the down switch (DO3) is closed. If the gun switch (DO3) is closed, the register 0RR2 is set in block #462.
Add 17'2 to the contents of , and if it exceeds the maximum value OD + o, set ODm to register 0RR2, if it does not exceed, leave it as is, 7 lag l) Set "1" to CF2 and step #43 to move to.

If the down switch (DO8) is not closed in step #461, the i-1 block (04) is set to ``LliHII'' in block #462, and the recall switch (Rt: S) is closed. Determine whether it has been completed. And if it is closed, register MI)R's beep)M
l month (2, Mr') Set R3 to "11', register 0R
R.I.

2, and if the recall switch (RES) is not pressed, M D R2, M l) R3, register 0 RRI, leave 2 as is and set flag l:) CF2'
Set it to ``0'' and move to step #, i'A in Figure 12-4.
) R pitch 1M+, ) + 2. 8□l D R3 is “
(1'11 distinguishes whether it is "O" or not, and if it is "110", it is set to '1'1 for display. Then, the flag MIF
or 1", if "1" means ISO manual setting, 8-IDR (1, ML] H, Ml) 1, Ml
)R7 as ′”()゛, and if “0” then Mi’)R
O as " ] ", λ'11) old, Ml] <4. Let November 7 be "'f)". Accordingly, this "excuse" is,
The ISO symbol for O1 or manual and the +/- symbol for A-halide will be displayed.

Next, the blank data (BLD) is stored in the register (IOR).
output to the display unit (DPC), and then to the MD
R2, Ml) If the content of R3 is "01", it is on the positive side, so the register 0RRI; if it is not "01", the content of register RR2 is sent to the display unit (DPC), and the process moves to step #32. Next, in step #32, the contents of the register MDR are sent to the display section (DI-'C) i, and the contents of the register MDR are sent to the terminal (Oll).
is set to ``HigI+'' to enable display by the light emitting diode (FLD) of the display section (+]'C).

Next, it is determined whether either flag I) CFI or DCF2 is "11", and if it is "1", it means that the data has been changed. In order to stop what is being done, the process waits for a certain period of time and then proceeds to step #50.On the other hand, if both flags DCF1 and DCF2 are 0, the process immediately proceeds to step #50.

In step #50, terminals (02), (03), (
04) as “H1ε11”, (il) + (+2)
, (i3) or ゛)IiBl+'', that is, whether the key switch is always closed. If any of the keys are closed, the 5-second The data is set in the internal counter ICO to determine whether the main switch (BMS) is about to close.

If the main switch (13M S) is closed, terminals (02), (03), and (04) are closed.
As LOW11, return to step #)3 and repeat the above operation.

If all the key switches are not closed, the contents of the ICO will be "+1" if all the key switches are closed.
Ste.

move to - If the brim is not 0, check whether the 7-inch (S4) is closed or not.
- If not separately closed, the main switch (B M
8) is determined, and the process returns to steps #51 to #8.

5 seconds have passed since all keys and water keys were released, or
When the reset switch (S4) is closed or the main switch (BMS) is opened, the process moves to step 52 and the terminals ((')]), (05) to (0
18) to 1l-oIII+ and 7lag ccF to “0”
'', and enables interrupts by the interrupt terminals (itA) and (itB), and enters the l-I ALT state.

When the calculation of the exposure Bi control value is completed and the release switch (S2) is closed while the flag CCF is 1'', the terminal (
When the interrupt to iLA is accepted, the process moves to step 53. In the step of well 53'' is the terminal (09)
Set it to ``High+'', output a pulse of 5 Opsec from the terminal (08), and read the data from the flash device.Then, determine whether the charging completion signal is input manually or not. The contents of register P■R2, in which the aperture level value for photography is set, are sent to the aperture control circuit (AI"C), and when the charging completion signal is input, the aperture for constant light photography is set. The control circuit narrows down the contents of the register PVRI in which the stage value is set (
APC). Next, it is determined again whether there is a charging completion signal or whether it is manually operated, and if it is manually operated, the register TVR is set to the exposure time for flash photography.
2. If not input, send the contents of the register 'rVR] in which the exposure time for ambient light photography is set to the exposure time control circuit (TIC).

Next, in step #53, set the terminal (09) to “Higl+”
and connect the terminal (08) to 15 to the flash device (FL).
By sending a pulse of 0μ5ecll+, the flash device determines that the exposure control operation has started. and,
Terminal -J' (01] ) t ``l-our'' is set to turn off the light emitting diode (FLD) so that no intervening light display is performed during exposure control. Next, a pulse is output from the terminal (012) to cause the release circuit (RLC) to perform a shutter release operation and start an exposure control operation. Then, when the exposure control operation is completed and the shank curtain opening is completed, the switch (S=1) is closed, and when the switch (S4) is opened, the terminal (02) is opened.
, (03), (04) as "II iH:lI" and move to step #52 ('Ishiko1j; Same as above (1)
J, perform the operation Il]\1. 1, which becomes T state;
There is a specific example of the A-mode steady-state calculation i of step #1 in Fig. 12-1, and Fig. 1.1 is a diagram of the exposure control value based on this calculation. In step #60, when the lens is replaced 11 times, register 1 is entered as a measure after 7; the set aperture value written in R3 is the open aperture value l\v.

111 to see if it is smaller than , and if it is smaller, Avo is set in register AVR3, and if it is not smaller, it is left as is. Next, it is determined whether the set aperture value is larger than the maximum aperture value Avm, and if it is larger, Avm is set in register AVR3, and if it is not larger, it is left as is.
Proceed to step 61.

In step #61, the Ev value and the set aperture value Aν
Calculate the exposure time by calculating Ev - Avs = Tval from S, and then calculate the calculated exposure time Tval or the shortest exposure time']' WIN
i,, determine whether Tval > Tv+n for a short period of time by 1''1j. Then, i' val > T
van (1″ in Figure 14, v>1°7), then calculate Tval Tv+n = clTvl.Then, calculate clTvl or the range data on the over side (3 Ev in Figure 14). Then, if dTvl <= (ERRI), the range data written in the register ERRI (indicated by El here) is smaller than ≦20) Using the set aperture value Avs and the calculated exposure opening 1”val as control data, set y-star AVf<1. TVR] i: Settings, MDR7
is set to "0", and the number of refinement stages (AVRI) Av.

Set it to ``Reno Star (VR)'' and move on to step #15.

If it is determined by step #62 that dTvl > (L: RR1), then the calculation Ev - (T: l < R1) - Tvm = Aval is performed, and finally, 1 Exposure 11 - Open 1' Vm range data et al. 4 feet: Proper aperture (+tf
Calculate.

Then, after determining whether Aval>) AVRI1 or not, A va I > AV
Ill's murmur (Fig. 14 Ev > 2-4) 2-4) is set to 1゜ so that the display blinks as an over warning, and the maximum aperture value Avtn and the shortest exposure time open Tv+n are set as control values. The number of stages of narrowing down is calculated and the process moves to step #15.

On the other hand, if it is determined in step #63 that Aval≦Avm (in the range of 20<Ev≦24 in FIG. 14), the calculated aperture value Ava1 and the shortest exposure time covan are determined. Calculate the number of refinement stages as a control value and #
Move to step 15.

When it is determined in step #64 that Tval≦'rVI+1, T, va I is determined in step #65.
<Tvo, that is, it is determined whether the calculated exposure time is smaller than the maximum exposure time Tvo. and,'
If Fval≧Tvo (in Fig. 14, 3≦Ev≦1
7) set aperture value Avs and 11. The process moves to step #15 using the obtained exposure pJ]Tval as a control value. On the other hand, if T val < T vo, the calculation Tvo − TvaI = dTv2 is performed, and then the range data on the Anggu side (ERR
2) (shown as I Ev in Figure 14) and dTv2, and if dTv2≦(ERR2) (shown as 3 in Figure 14).
>Ev≧2) The set aperture value Avs and the calculated exposure aperture value ``va1'' are used as control values to proceed to step #15, and the process proceeds to control of the flash device (FJj). On the other hand, if dTv2>(ERR2), calculate Ev + (IERR2) - Tvo = Ava2, and set the aperture value Av by taking into account the range data at the longest exposure time.
Calculate a2. And the calculated aperture value or A va2
＜ A 1' to determine whether it is vo or not,
If A va2 < A vo (fpJ14 figure Ev <
When it is in the range of 2), N41) l < 7 is set to 1゜ and it is displayed for an under warning.
Control v to open aperture value and open Tvo at maximum exposure 1+'i
As a result, move to step 15. - Reno, Ava2
If ≧l\VO then (1st, 4th) -2≦T: ν〈2)
Tv between calculated aperture value ＼va2 and longest exposure + 1.7
Move to step #15 with o as the controlling value i1+1jg'
Ru.

In Figure 1.1, the part indicated by the dashed line is the range data (), and as is clear from this figure, the set aperture value or 1
The alarming al'l region is wide and spreads out to the fl, which is the proper exposure.

FIG. 16 shows a specific example of the flash control circuit <FCC). Also, Figure 17 shows the circuit (
FLC) is a specific example. Further, Fig. 1) 3 is a specific example of the operation mode signal output circuit (IMC) of Fig. 17,
FIG. 10 is a flowchart showing the operation of the microcomputer (MCF) in FIG. 17.

In Fig. 16, the terminal (09) or 'tIi Bl+
”, AND circuit (AN17), (ANI8),
The NAND circuit (NAt) becomes active and the terminal (08)
mode pulse from <50.1 months), 150ISee
The serial input/output pulse (SCI'') is sent to the terminal (, JB3) via the OR circuit (OR3), the ant circuit (AN18), and the transistor (13T11). The data representing the set light emitting time from the terminal (JB2) and 1 runno star (BT
9), Inverter (INll), AND circuit (AN) 7
) to the series input terminal (SIN) of the microcontroller (MCB).
) can be read. In addition, the camera's 7-runchie device (
The data to LL) is sent from the serial output terminal (SOU) to the flash device via the NAND circuit (j''JAl), transistor (BTIO), and terminal (JB2). Transistor (BT
After t when IO) does not adversely affect reading, all II OII signals are output from the serial output terminal (Soul), and the transistor (BTlo) remains non-conductive.

In Figure 16, the microcomputer (MCF) terminal (015
), (016), and (017) output signals according to range data, as shown in Table 5. Defugu (D1
'', 1) conducts one of the terminals (B T5) - (13'rb) according to the output of terminals (015) and ((') (1
), the i/verter (I Nl0) is connected to the terminal (015), (
Transistor 03 T3) in response to the output of 016),
(B T4) is made conductive. As a result, one of the resistors (R2) and <R3) and one of the resistors (1<(1'<7)) are selected.The resistor (old) and the constant current source (r C5) outputs the appropriate exposure level, and resistor (++2) and constant current source (I C2
) outputs a level below the 1/2Ev proper exposure likelihood, and the resistor (R3) and constant current source (IC2) output a level below IEv. Furthermore, a resistor (R4) and a constant current source (
IC3) outputs a signal at a level of ]/2E over, (R5) outputs a signal at a level of IEv over, (R6) outputs a signal at a level of 2Ev over, and (R7) outputs a signal at a level of 3Ev over.

An operational amplifier (hereinafter referred to as an operational amplifier) (OAI) outputs a film signal from an analog output terminal (ANO). It is connected to the non-inverting input terminal of the operational amplifier (OA2) of the photometering circuit.Then, it is input to the base of the output logarithmic expansion transistor (BTU) of the operational amplifier (OA2), and the current is expanded and connected to the capacitor ( C+).

As described later, the flash device (PL) is connected to the terminal (JF2) until the X contact (SX) on the camera side is closed.
) outputs the signal "I(i)Hh" to the terminal (JB2), and the transistor (B'r9) is conductive. Therefore, the "Low" signal is input to one input terminal of the AND circuit (ANI5).The other input terminal of this AND circuit (ANI5) is connected to the terminal (TIE) of the exposure time control circuit (TIC). signal is being input, and this terminal (
T I E) is 'I (igM
'It has become. Therefore, when the X contact (SX) that is linked to the shutter operation of the camera closes and the light is not emitted,
As described later, the flash device (FL) terminal (JF2
) to terminal - (JB2) is "'l1iB
11" to 'lθ, +" and transistor 13T
9) becomes non-conductive and outputs the AND circuit (ANI5).
'l-1-1i+' Tonari (A'7 circuit ((,') R
12) Through this, the transistor (+3T2) becomes 4: conductive. Then, it is integrated by the output type iQI maconde of 1 runnostar (+31'l):
: When the output value is reached, the output of the funparagraph (ACI) is '''
ll1H; Inverted to Is', one shore 1 circuit (081
), a pulse of "11th;II" is output.

, - pulses are ant circuit (lXN11), OR circuit (
The light is sent to the Wara/Shu device via the ORIO), IN1'L, IN1'l, and ZUNSTER (13T12), and the light emission of the 7-layer light is stopped.

The terminal (T I l:) becomes "Low", the clock opens from the second to '1st l], and the AND circuit (ANIG
) outputs a pulse of 'l-1i81+'.

At this time, the amount of light emission (integral amount of the capacitor (CI))
If the proper exposure has not been reached and the range data is within the range data, the output of the comparator (l\C1) is 11 LoIII+, the output of the comparator (AC2) is ``)li61+'', and the pulse from the AND circuit ()ANI6) is ANI
4), OR circuit (01 ma 10), invert 9 (I
N 12),) Run 9 star (13'r12), terminal (
jB3) to the flash device. The 7 runcillator (FL) outputs an FDC signal (hereinafter referred to as "F proper light emission signal") indicating that light emission for proper exposure has been performed with this pulse.

Also, when a pulse is output from the AND circuit (ANI(i)), the output of the comparator (AC:I) or “IIiH
When M' is set, the pulse from the AND circuit (ANI(i) is sent to the AND circuit (ANI3), (ANI4), OR circuit (OR10), inverter (IN]2), transistor (131'12), terminal (JB3) to the 7-runche device.At this time, a stop pulse and yet another pulse are output.

This is a case where the amount of light emitted is greater than the sum of the range data and the appropriate exposure level, indicating overexposure.

Therefore, if the flash device receives two consecutive pulses, it will not output the proper light emission signal FDC.

In addition, when the food pattern is set (when the film container is not attached to the camera, the terminals (01, 7) are connected to the food pattern.
...'', and when the AND circuit (AN16) does not output a pulse and the stop f+ signal is output, the proper light emission signal (1) C is always output.

Next, the flash device (1-'I power is indicated in Fig. 17).

The operations shown in FIGS. 18 and 11 will now be explained. In Fig. 17, (I)I')) is a 41112 circuit that connects the output of the power supply battery (B/~1゛) to the LILL-ζ diode (
+) 10) to send a charge signal to the main capacitor (1) to C. The operating period of this booster circuit (DI) is from the terminal (021) of the microcontroller (MCB) to the transistor (1LOI).
(D i ) is a charging completion detection circuit that detects whether the main capacitor (Ch 1) has been photoelectrically charged to a predetermined voltage.
When it is detected that the main capacitor (CIVl) is photoelectrically charged up to a predetermined voltage, the output terminal is “from Lo”.
l1i) 71+''.

(TR) is a trigger circuit with 7 limb flops (RF1
When the output of
WC) is connected to cause the xenon tube (XI Mi) to emit light.

(ST) is a light emission stop circuit, which is operated by a pulse from the AND circuit (AN26) and disables the switch circuit <SW C) to stop light emission from the xenon tube (XE).

When data is being exchanged between the camera and the 7 lash device (FL), the flip 70 knob (1<F12) is reset and the ant rotation 'J8 (A N l') is reset.
, I) becomes active and is manually inputted via the terminal (JF3), transistor (13T22), and inverter (IN21) for 50 μsec + 10 (1 μsec, 15
The 0μsec pulse and synchronization clock pulse are generated by the circuit (
IMC).

In FIG. 18, the output of the AND circuit (AN23) is “
When it becomes I (igl-), the reset state of the counter (CO]3) is released and the counter (COI3) counts the clock pulse (CI)F) from the microcomputer (81CF). Then, the cent state is released from the DEII coder (DEII) and one cycle of the clock pulse .'[8μSee
When the time elapses, a pulse is output from the terminal (dl). Further c) After 8μsec, 148μ from terminal (d2)
When 15211 seconds have passed, a pulse is output from the terminal (d3). Therefore,
5() When the pulse during μSee is input, the terminal (dl)
Flip 70 7' (R1°20) with a pulse from
is sent, and the pulse from the one-shot circuit (OS 15) outputs at the rising and falling edges of the 50 μsee pulse, resulting in 7 rip and 70. Flip the output of (1(1・'2t)) 71:l y F(1) F20)
Bb". This signal is the 7 runciu device (PL).
This is a signal indicating that data is to be transferred from the camera to the camera.

When the end j'-(1, CA) or "l11g11" is reached, the power output (C014) is released from the reset state and the clock pulse from the camera is output from the AND circuit (AN23). And Tefugu (DC2)
i, every time there is a clock pulse or manual input, the terminals ([0) to (
Set "7)" to "HiBl+" one by one. When the data transfer is completed, the microcontroller (hlIcF) terminal <0
Flip with pulse from 2 (1) 70 tube (RF20
L(I) l・20) is reset and the terminal (FLCA)
becomes the "1-side".

When a pulse of 100μsec is manually generated, a decoder (
The pulse from the terminal (d2) of DEII) is connected to the OR circuit (O
R30), 7th pump, 70 pump < Rl”
2(1)i is applied to this flip-flop (RF
20) The beam is centered and the flip-flop (R1”2
1) is set. And this 100μ5ecll
At the falling edge of the l pulse, 7 rips and 70 tsubu (D ``2''
In 1), the output of this 7 lip/70 amplifier (RF2]) is latched, the terminal (CAFL) becomes "Hill", and data is transferred from the camera to the 7 lash device (PL).
This is a signal that indicates that something is going to happen.

If you input a pulse of 150 μsee Ill, the 79 knob/70. (RF20) is the terminal (d2), (RF21
) is reset by the pulse from terminal (d3), and the 7 limp/70 knob (RF22) is centered by the pulse from terminal (d3). Then, at the falling edge of the pulse during this 150 μsec, the output of the 7 lip/70 knob (RF22) or the flip/70 knob (D "22) is turned on/off, and the terminal (R1,...) becomes lligb" and exposed. This is a signal indicating that a control operation is to be performed. This 7rimp 70
7pu (RI'22), (l]"22) is × contact (sx
) is closed and the light emission start signal or AND circuit (AN25
) and the output terminal (1L) is “
It becomes LOIll゛.

In addition, flip 70 nbu (RF20), ke<F21)
.

(RF22), (1',)F20), (D F2]),
(1) F22) is the pulse from the power-on reset circuit (PH1) when the power is turned on, or the × contact (S
X) is opened and the 1 runno star (13T23) becomes non-conductive, so that it is manually reset by the pulse from the 777971 circuit (OS 10) or via the OR circuit (OR20).

Next, the operation shown in FIG. 17 will be explained based on the flowchart shown in FIG. 10. First, power switch (EMS) (first
When the ( ) is closed, the flash device ( ) is closed.
Power is supplied to the circuit (January -), the microcomputer (MCP) starts the initial reset state, and the digital circuit section of the circuit is reset. The microcomputer (1CF) is connected to the terminal (021
) to Hi81+' and one ζ Trannosta (B'F25)
conducts to operate the booster circuit (DD). Further, the terminals (022) and (020) are set to "Loud" to disable the ant circuit (AN24). Furthermore, the terminal (0
23) to “High” and set the flash panel (FLP) to “High”.
) Drive motor) (MO) drive circuit (MDC) is enabled for operation, and terminals (025), (026), (
027) is “Loud, Loud + High”
Outputs the signal to set the panel to the middle position of the movable area.

(FLP) is a flash” because it changes the direction of light irradiation.
It is a 7 lash panel installed in the flash unit (FL), and is a position data output unit that outputs data corresponding to one vertical position of the 7 lash panel (COP).
CO) is the data from the position data output unit (COP) and the microcomputer (MCF) terminals (025), (026), (0
27) and outputs a signal indicating in which direction the panel (FL P ) should be moved. Motor drive circuit (
MDC) rotates the motor (MO) in the forward or reverse direction based on the direction signal from the comparison circuit (DCO).
Move the panel (F L P ) to the position where the two data manually entered in CO) match. Therefore, this 7
The Lassocie device changes the 7-lanche irradiation range according to point j(; ii[1[, Data for 30 minutes 3 o hq D is set in the IH, and the interrupt by the terminal (1[) and the timer is set to 1i to enter the IIAIT state.

If data is not exchanged or the light emitting operation is not performed with the camera, a timer interrupt will occur, and if a timer interrupt occurs, the timer will be interrupted.
Calculate the contents of Renosta i' l I< and check whether it becomes 0. Then, if it is not 1, that is: (() minutes) is If it has not finished, the timer interrupt and the interrupt by the end r(i+,) are enabled, and the state is set to 11＼1-5T. What is being done,
In other words: (If 0 minutes have passed or 1' has passed, the end) - (021) should be set to ""Loud", and the booster circuit (1'
') l)) Stops the operation of '[, terminal (+1)
The HAl-i state is entered with interrupts enabled.

Pulse 50μ5ecdl from the camera or use the terminal (
When FLCA) becomes “I-11) (1+”, the OR circuit (
An interrupt signal is input to the terminal (1t) via OR22), and the microcomputer (MCF) starts operation from step #70. At step 70, terminal (1t) or 'l1i
In this case, the terminal (ilO) is “8h”.
Since it is OW', the process moves to step #71 and performs serial input/output operation. At this time, the microcontroller on the flash side (
MCF") performs serial input/output operations based on clock pulses input from the camera side to the clock terminal (scp) via the terminal (, JF3), transistor (BT22), and inverter (IN21). When the operation is completed, a pulse is output to the terminal (020), and this pulse causes the terminal (FLCA) to become "I-" as described above.

Become a rice field.

The output of the NOR circuit (NOII) is "ll1Bh" until the terminal (T'LCA) becomes "HiBl+", and the 7rip/70rub (RFIO) is in the reset state until it starts emitting light. Therefore, the output of the AND circuit (AN22) is "Hi8b", and the NOR circuit (NO
The output of the transistor (IO) becomes ``Loud'', and the output of the transistor (
BT20) conducts from the ζ terminal (JP2) to ``II i
BI+” (signal is output. terminal (FL CA
) or “l1iH1+”, the NOR circuit (NOII
) output becomes “Lo…” and the 7 runsch device (FL)
The output of data is enabled from U through the transistor (13T20).

Based on the clock pulse from the camera, first the terminal (f
When the signal "l-1iB11'" is output from the (it This number is used on the camera side as a signal to determine whether the 7-run 1ifi that is being powered is attached.When the next clock pulse of 2-1 is applied manually, the terminal (fl) becomes "ll1H1+".Then, and The circuit (AN20) becomes active, and the charging completion signal of the charging voltage detection circuit (1) ) is sent to the camera side.

Here, if the charging voltage of the main capacitor (CM) has reached the redundant value, the charging completion signal is "l-1i gl+".
If it does not reach 1, it becomes "Loud". When the third clock pulse is input from the camera, the terminal (f2)
'l-1i81+' and the AND circuit (AN21) becomes active.

At this point, if light is emitted for proper exposure as described later, the output of the AND circuit (AN2S) will be “High”.
l+”, and this signal is sent to the AND circuit (AN2]),
NOR circuit (N010), transistor (13T20),
It is sent to the camera via the terminal (JF2).

The above three types of data are sent from the 7 runcillator (PL) to the camera. When the microcomputer (MCF) receives 8 clock pulses from the camera, “H” is output from the terminal (020).
Output the pulse of “iIIIl+” and connect the terminal (FLCA).
Set it to "Loud", then set the terminal (022) to "l-1"
igb'', the AND circuit (AN24) is activated, and a light emitting diode (LDI) can indicate the completion of charging.

Next, the timer mm is set and the data for 3(') (fill when the booster circuit (DD) is operating) is input to the nostar TIR.
, +river) to enable interrupts to the terminal (it). Next, set the 5-second data (for display hold) 5S1] in the register COR, subtract 1 from this register COR, determine which terminal (ill) is 'iε11', and calculate the contents of the register cOR. repeats a series of operations to determine whether “o゛”.Then, the terminal (mountain) is t+L o
lI+11 remains, and there is no interrupt signal to the terminal (L), register c.

When the content of 1 becomes '0', it means that 5 seconds have elapsed since data exchange with the camera has stopped, and the terminal (022) is set to LoJ' to display charging completion.
;Display part (Fl) of 7 lash device (Fl-)
P) is displayed blank and timer interrupts are enabled to enter the l-IAL i' state.

If it is determined in step #74 that the terminal (ill) is set to 'i81+'', the terminal (023) is set to II J-o, II in step #75, and the motor (
NIII)) Operation %%'11-I Prevent the panel (F'LI') from moving during light emission. Then, when the terminal (ill) becomes II l-o...I+ and the light emitting operation ends (the × contact is released at 1111), the light emitting operation ends]-4", and then #73 Return to step. In other words, the display hold period 11 and ν is 5 seconds from the end of the data exchange operation with the camera or the end of the light emitting operation. Also, the hold time of the operation of the booster circuit (DI) It takes 30 minutes until the power switch (F'MS) is opened or the display hold is completed.

When a pulse of 100μsec is input to the terminal (JF3), the terminal (CAFL) becomes 'iHb' and the NOR circuit (
NOll), the output of the AND circuit (AN22) is ゛″゛L
The output of the "L side" circuit (NOIO) becomes "Hilly", the transistor (BT20) becomes non-conductive, and the terminal (
The data input from the transistor (B
T2]), microcontroller (
MCF) can be read from the terminal (SIN).

As shown in #76, the microcomputer (MCF) first reads the ISO data input from the camera to the terminal (JF2) and sets it in the register S V F I<.
Next, read the range data and register registers ERFR1,E
Set RFR2, then read the aperture value for 7 lash photography and set it in register l\V FR, then read the exposure time for flash photography and set it in register TV F R, and then set the focal length of the photography lens. Read and set it to Renstar rFR.

Next, this flash device is attached to the camera's 1ti shadow lens (
Since the angle of incidence changes according to the focal length of LE), the maximum and minimum amounts of light emission ■ν+n, Ivo change.

Then, based on the focal length data read from the camera, the address of the ROI in the microcomputer (MCF) is specified, and the Ivm and IVO data fixedly stored therein are read out (11). Furthermore, the position data (opening) of the panel (FL 1)) is set to 1:.
Then, connect the position data of 52 to terminal -<025L(02(
il, (0271i2 output, panel (T' I-P
) No Il't :? Move i to the corresponding position.

Next, based on the data read from the camera, the interlocking range 1
Perform 1iii calculation of river data. First, maximum light output 1v
+n, film (・Based on δ degrees, aperture value and range data, lv+n-1-(SVFR) ten (E old:'[<2)=
Av F R>=1] Calculate the maximum photographing distance by performing an oil body using the refill port 1. Here, since the under range data can be considered as proper exposure up to a long distance compared to when it is 0 by that amount, the value obtained by adding this data is the longest shooting distance Mli.

Next, Ivo ten (SX; FR) - (ERI'R+) - (AVF
1 verse = Dv.

The shortest photographing distance 'i[distance] is calculated by performing the calculation. Compared to when the over-side range data is 0, it can be considered that the exposure is appropriate up to short distances, so the value obtained by subtracting this value is the shortest photographing distance.

Next, the shortest and longest shooting distance data (I) νJ Dvo, aperture value data for flash photography (AVPR), ISO data (SVFR), 7 ranoshi = exposure time data for photography (T
VFR) is sent to the display unit (FDP) for display, a pulse is output from the terminal (020), and the terminal (AFL) is
t Low II and '4 child (023)' to 'I-11
611'' to enable the panel (FLP) to be driven, and the process moves to step #72.

Next, the flash light emission operation will be explained.

When the × contact (SX) on the camera side is closed, the transistor (
BT23) conducts and the one-shot circuit (O811
) to a pulse couple of °'111ε11'. At this time, if the charging is completed, this pulse force is coupled from the AND circuit (AN25) and the 71 lunop, 70, knob (F
<Flo), (RFll), (11F12) is
・To be done. When the flip 70 amplifier (RFIO) is set, the output of the AND circuit (AN22) becomes “l ] -
〇When it becomes W11, the power of 1 island of Noah circuit (N010) is 1
liBl+", the transistor (131'20) becomes non-conducting, and the terminal (JF2) becomes "Loll". With this signal, as described in nI, The integral operation starts. Also, the reset state of the counter (COIO) is divided by 117, and the counter (C01 (1) is reset to the microcomputer (+, 'lc
The clock pulse (C1'F) from J"-(gl) is countered. Then, when enough time has elapsed for all 7 runs, the clock pulse (C1'F) from J"-(gl) or "l1iI ;
M”, the output of the OR circuit (OR30) or “tli
8b”. As a result, the transistor (13T2
0) or through, terminal <Jl"2) or'"l-1iBl+
``Then, the moving operation of the camera side 'e' stops.Then, after the 'O terminal (C1) becomes High'', the Q output of the flip-flop (DF5) shown in Figure 16 on the camera side becomes Low.
After a sufficient time for the terminal (82) to become "ud" or "l-
1iBl+'', and this 1iBl+'' signal is an OR circuit (OR22).

(OR29) respectively flip 70 amplifier (r
<FIO), (RF12) 1 is applied, 7 limp/7
0tsubu (RFIO), (RFI2), force/nunta (CO
IO) will be deducted.

When 7 lip/70 tube (RF12) is set, this signal is sent to one circuit (TR) and the xenon tube (
XE) starts to emit light. Furthermore, an AND circuit (AN2
3) The signal from the camera input from the inverter (IN21) is no longer input to the circuit (I MO), and the signal from the inverter (IN21) is output from the AND circuit ()\N2G). It becomes like this. and,
Is there a light emission stop signal from the camera? Inno\'-Yu (IN21)
When inputted manually via the , the light emission stop circuit (ST) operates and the light emission of the xenon tube (XE) is stopped. Further, this signal Flip 70 (1 F1a) is set. As mentioned above, if the integral value exceeds the over-side interlocking range, another pulse is output from the camera sensor 1. At this time, the flip 70 knob (
RF13) is set and the output of the delay circuit (1)L) is "tIi g b", so the AND circuit ()~N27) also outputs one pulse or the OR circuit (OR2).
4> and is output through 7 lip-flops (RF13
), and there is no indication that the correct exposure flash was fired (7 runs of 1° proper exposure 1 t were fired, and the flash stopped). In this case, the 7 linop/70 amp (RF) 3) is left in the set state and continues.Also, even if the light emission stop signal is not output and the full light emission is performed, after the integral operation is completed, If the integrated light amount is not lower than the range data on the ant side, a pulse of 1' is output, and this causes 7 linops and 70
The knob (RI' 13) is also set to indicate that a flash has been fired with proper exposure.

The Flimbu 70 amplifier (R1-”11) has an X contact (SX
One-shot circuit () outputs a pulse when ) is opened.
It is reset by a pulse from O8IO). At this time,
If 7 rip/70 knob <F13) is set, the output of the AND circuit (AN28) is “111g1+”
As mentioned above, this signal is sent to the camera as a signal indicating that the flash has been emitted with proper exposure. Furthermore, the output of the AND circuit (AN28) is “Hi”
gh”, the reset state of the counter (COll) is released and the counter (COll) starts counting clock pulses.

The light emitting diode (LD2) blinks based on the frequency-divided clock pulse from the terminal (II1), and after a certain period of time, the terminal (1+2) becomes "Higl+" and the clock pulse is output to the AND circuit (AN29). ) is applied to the 7-resob/70-amp (RF13), this 7-rip/70 amplifier (old RF13) is reset, the counter (coal) becomes 77, and the light emitting diode disappears.

In addition, when a pulse of 150 μsec is input from the terminal (JF3), the terminal (RL) becomes “High” and if this and the bare lip 70 unit (RF13) are sent, the signal from this terminal (RL) will be It is reset by a signal. In addition, as mentioned above, when the light emission start signal is input from the AND circuit (AN25), the terminal (RL) is
"become.

FIG. 2() is a specific example of the display circuit shown in FIG. When the terminal (CDP) becomes “High”, the terminal (ρ1), (
The latch pulse to f2), (, (3) is output from the control circuit (1, Ac).Then, the data is read into the serial input register (Silk) and is sequentially sent to the register (RIEGI), (REG2), (R[::G3)
be taken in. Therefore, the register (R11fl) contains the numerical data of exposure time or ISO, and (R1gG2) the numerical data of direct stop or override, (RrE
G3) displays the display mode data, that is, the microcontroller (MCB).
) is set to the register in 1') H, and the output of terminal '((!0) to (c7) is sent to register M
Corresponds to DR bin) M 1) 1 (0 to M D IG).

Decoder (1) El) converts the output of register (RE(,1)) into a value for displaying exposure time, and (1) E2)
Convert to a value for data display. The data selector (DSI) receives data from the decoder (DEI) when the terminal (el) is "High", that is, in the exposure time display mode, and receives data from the decoder (DEI) when the terminal (el) is "Lou+", that is, in the ISO display mode.
1) Send data from E2). Also, the decoder (
DE3) converts the output of the register (REG2) into a value for displaying the aperture value, and the decoder (DE4) converts it into a value for displaying override. If the terminal (e4) is 'HiHb', that is, the aperture value display mode, the data selector (1) S2) sends the data from the decoder (D E3) to II l-0.
11II+, that is, in the override display mode, data from the decoder (1) E4) is output. Defender (1)
)E5) is the terminal (eo) of the register (REG3) -(
This is a decoder that converts the data from e4) into data for symbol display.

The timing signal output circuit (TIC) is located at the end A ('1).
I42 outputs the clock pulse of IG2 to (j2) and further sends a timing signal to the common signal output circuit (Cot) and the segment signal output circuit (SED).

The segment signal output circuit (SIED) includes a data selector (DSL), (DSL), and a decoder (1) E5.
) outputs a display signal based on the data from the fourth
The display shown in the figure will be displayed. In addition, Renosta (REC
, 3) is "l-1iBb", the clock pulse of IH7 is output from the AND circuit (G1) and the display is 11I7. De no five wy, will be done.

The signals from the terminals (e5) and (e6) of Renstar (REC3) and the 8th and 3Hz clock pulses from (jl) and (j2) are sent to the drive circuit (Ll)C) and the terminal (Dli)1 1) is "l-1iBI+", a drive signal centered on the flash state 1) is output.

○...Conducting part ×...Non-conducting part Table 2 Table: (Table 4 Table 5 [Vermilion] As explained above, according to the present invention, data regarding the film such as ISO data and the number of frames of the film are included. In this case, it is possible to provide a camera that can automatically control the exposure amount, etc. of the camera based on the above data, and also to notify when the back cover of the camera is closed. Since the data is read and stored using the indicated signal, there is no need to read the data over and over again.Also, the read signal is output with the back cover open signal, and when the data reading is completed, the read No. 13 is automatically erased. The reading operation is performed only when the back cover is closed, eliminating unnecessary operations.

In addition, the read data is divided into 1'-files and the file Ax
” (Whether you are using a film that has data for the world or not) is automatically 1' separated, and if there is no data, a warning is issued.
No. 1 film 'f''j: There is no need to provide an exhaustive detection section to distinguish between 'I'll' and 'I'll'.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the exterior of the camera in which the second invention is plagiarized, Figure 2 is a diagram showing the inside of the camera in Figure 1, Figure 3 is a diagram showing an example of the display, and Figures 4 to 4. 7 is a plan view showing a detailed example of the film information display window in the camera shown in FIG. 1 along with the optical path; FIG. 8 is a perspective view showing an example of the light control film; FIG. 9 is a film counter and counter switch; FIG. 10 is a plan view showing the relationship between the back cover and the back cover opening/closing detection switch; FIG. 10 is a block diagram showing an example of the camera control device of the present invention; FIGS. Fig. 13 is a flowchart showing the operation of the device shown in Fig. 10, Fig. 14 is a graph showing the relationship between Ev value, aperture amount, and shutter speed in the control device shown in Fig. 10, and Fig. 15 is a part for reading film container data. 16 to 18 and 20 are perspective views showing f:tS.
A circuit diagram showing the main parts of the control device in Figure 0, Figure 19 is 118
3 is a flowchart showing the operation of the circuit shown in the figure. 1...Camera body, 14...Film container, 15° 16...Touch piece, 31...Back cover open/close detection switch, M
CB, MCF...Maifun, CAR...Renostar for data storage of film container, eyes)P...Display device. '4'f;'r Applicant: Agent of Minolta Camera Co., Ltd. Patent attorney: Aoyama Aoyama (2 others) Figure 2 Figure 4 Figure 5 S, A 4 2-30 Azuchi-cho, Higashi-ku, Osaka, Osaka Osaka International Building Minolta Camera Co., Ltd. Osaka International Building Minolta Camera Co., Ltd. Osaka International Building Minolta Camera Co., Ltd.

Claims (1)

[Claims] (1) Detection means for detecting data provided on the film container Reading command means for outputting a reading signal instructing data reading based on the opening of the back cover of the camera When a reading signal is input, the detection means Reading means for reading the data from the reading means and erasing the read signal when the reading is completed.Conversion means for converting the data read by the reading means into ISO data for exposure effect.Based on the data read by the reading means, a means for determining whether the provided film container is attached to the camera;
1. Storage means for storing data from the conversion means when it is determined that a film container in which data is provided is attached, IS
A camera characterized in that it is provided with an exposure control means for calculating an exposure value and controlling the exposure of the camera based on the data stored in the means storage means for displaying the O data.