JP2798916B2 - Camera control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field]   The present invention provides a microcomputer equipped with a shooting condition.
Camera that can electronically control various functions such as
Select, in particular, various functions, or
Controls such as operation switches to set necessary conditions
It is related to the control method. [Prior art and its problems]   In recent years, it has been impossible to use them effectively without a skilled person.
Microcomputers for class SLR cameras
The microcomputer is equipped with a microcomputer.
Controls the driving of the shadow lens to automatically focus the shooting lens
Moving single-lens reflex camera to move
This makes it difficult to operate until now
A big response to those who gave up as unusable
Has been brought.   In this way, the camera can be automatically and electronically controlled.
The new system will meet the needs of single-lens reflex camera consumers.
Breakthrough in expansion, such an automatically controlled camera
The demand for LA is expected to increase.   By the way, this kind of automatic electronic control camera is
It has many functions to support the expansion of layers
Is required. In other words, cameras can be used from experienced to beginner.
And if they can not meet each requirement
No.   However, in order to respond to the demands of a wide
When the camera is equipped with the functions described above,
It has many features that are rarely used.
Instead, it can be inconvenient.   For example, for advanced users,
Output control mode or automatic exposure
The exposure value that is automatically set
It must be possible to On the other hand, for beginners
Not only is such an operation unnecessary, but rather
This may complicate the work and may cause shooting failures due to incorrect settings.
You.   However, complicated settings and changes for beginners are not possible.
If you prepare a new camera, the camera
You have to buy a new one
You will be forced. [Object of the invention]   An object of the present invention is to provide an exposure control mode and an exposure compensation value.
Outgoing parameters are configurable to meet expert needs
Not only can you
Do not mislead users who do not need to change
An object of the present invention is to provide a camera that does not have a risk of being determined. [Configuration of the Invention]   For this reason, cameras with multiple types of control elements can be changed.
The camera control device according to the present invention includes
Change the setting element of a specific type of control element among the control elements.
It has multiple change setting modes that
Perform one of the following operations to change one of the change setting modes.
A selection means for selecting, a card mounting part,
Even if a predetermined operation is performed by the
Do not set the control elements that should be changed
Card insertion into the card insertion section
Control elements can be set in the change setting mode according to
It is configured to release the prohibition so that the function can be performed. the above
The control element includes, for example, an exposure correction value. Also, the above control
Elements include, for example, an automatic exposure mode. [Example]   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
This will be specifically described. <Configuration of camera>   FIG. 2 is a rear perspective view of the camera according to the present embodiment.
The shooting information is displayed on the top of the camera body.
Liquid crystal display device (1) for
On the other side, four mode setting switches in total.
(2-1,2-2,2-3,2-4)
(2) is provided. This switch (2) is an example
For example, a pair of upper and lower electrodes are
A total of four pairs are provided via a switch, and each switch (2-1 to 2-4)
Lightly press any of the switches to turn on the pressed switch.
It is preferable to adopt such a configuration. In addition, liquid crystal display
On the side of the device (1), there is a reloose button (3) and a liquid crystal display.
For changing the value of the numerical data displayed on the display device (1).
Up and down switches (Sup, Sdn)
I have. In addition, the camera is directly
Program switch to set the program exposure mode.
H (7) is provided.   As clearly shown in FIG. 3, the necessary programs or
Is the IC card with data written (4) is the camera body
It is set by inserting it into the holder (5) provided on the front of
Swelling. As the IC card (4), for example,
Exposure program card (type
A, type B), mode setting change card, demonstration car
There are a total of three types, and the user can
Insert and set the IC card (4). IC card (4)
The electrode group (4a) provided at the bottom and the electrode group (4a)
Program or data is stored in the memory
Basic structure in which the integrated IC (4c) is formed on a single substrate
have.   In FIG. 3, (6) indicates that the manual mode is selected.
The aperture change switch is used to change the aperture when the
I turn on this switch (6)
Change aperture by operating switch (Sup, Sdn)
You can do it.   FIG. 4 is a block diagram of a control circuit for controlling the camera.
Show. In FIG. 4, (E) is a battery as a power source, (D)
1) Diode for preventing reverse charge, (C) Backup
Capacitors, (R_R), (C_R) Is the reset resistor and
Capacitor, (Tr1) is power supply transistor, (μC) is
Sequence control of the camera body,
Inside the computer (hereinafter referred to as microcomputer)
To E^TwoPROM (electrically erasable PROM) and write
A booster circuit to create the required voltage
You. (AE) is an exposure control circuit, which is provided by a microcomputer (μC).
Control exposure based on exposure data. (LM) is photometric
(DX) is a film sensitivity automatic reading circuit.
The digital value indicated by the box is output to the microcomputer (μC).
(MD) is a motor control circuit that receives signals from the microcomputer (μC).
The film winding motor (M) is controlled based on the signal.
(DISP1) and (DISP2) are display devices, respectively.
A predetermined display is performed based on the signal from C). In detail
Will be described later. (LE) is the lens built into the interchangeable lens
Lens-specific data using a microcomputer (μ
C). (CD) is a replaceable IC card, inside
The card information (program information) stored in
Output to the capacitor (μC). Details will be described later.   Next, switches will be described. (S1) is a release button.
(3) Preparation for shooting that is turned on by pressing down the first stroke
Switches (S5), (S6), (S7), and (S8) have mode setting
Use the normally open switch for renewal,
Switch, film sensitivity setting switch, AE (auto exposure) mode
A setting switch and an exposure correction switch. The above (S1),
Even if any of the switches (S5) to (S8) are turned on,
High-level to microcomputer (μC) via the standard circuit (AN5)
Signal that changes from low to low
When a signal is input to the input port (S1INT), the microcomputer
(ΜC) executes the interrupt program (S1INT) described later.
You. (SBK) is a switch that turns on when the back cover is closed.
(SCD) turns on when an IC card (CD) is inserted.
Switch (OS1) is turned on when the switch (SBK) is turned on.
One-shot circuit that outputs one pulse, (OS2) is a switch
Switch (SCD) changes from ON to OFF or from OFF to ON
This is a one-shot circuit that outputs one pulse when it is turned on.
One of these two one-shot circuits (OS1) and (OS2)
When a pulse is output from the other side, it passes through the OR circuit (OR1)
The pulse signal is output to the microcomputer (μC)
(ΜC) is the input port (external INT)
When input to, an interrupt program (external INT) described later
Execute (S2) is the second button of the release button (3).
Release that turns on at the stroke (deeper than the first stroke)
Switch, (S3) is the second act of the focal plane shutter
Exposure completion switch that turns ON when driving is completed, (S4) is film
The winding completion switch, which turns ON when the winding of one frame is completed, (Sd
n) and (Sup) are for changing the set value and setting mode
Normally open down switch and up switch. (S
p) is the program exposure mode (hereinafter, P mode)
This is a program switch to be set for the REC. (SA) is
This switch is enabled when the AE mode is set to the manual mode.
Switch to change aperture value by turning on this switch (SA)
Becomes possible.   Next, the flow of the microcomputer (μC) shown in FIG.
The control of the camera will be described with reference to a chart. <Initial setting>   When battery (E) is installed, switch (SB) turns off
(Open) and the capacitor connected in parallel with the switch (SB)
(CR) is charged. The microcomputer (μC)
When the charging voltage of the battery rises above a certain level,
The reset port (R) becomes high level and the reset port shown in FIG.
Execute the set routine (RESET). Microcomputer (μ
C) first prohibits all interrupts to this flow,
Reset all flags and output ports in RAM
Step # 5, # 10). Next, the subroutine of card judgment and reading
Proceed to Chin (# 15). Note that this subroutine
When the camera is inserted or removed, and the shooting preparation switch (S1) is
Also executed when turned on.   This subroutine is shown in the flowchart of FIG.
The microcomputer (μC) is a variable
N is set to "0" (# 45) and the terminal (CSCAD) (see Fig. 4)
To a high level for serial communication with an IC card (CD).
Then, 1-byte data is input (# 50, # 55).
This serial communication will be described with reference to FIG.
(CSCAD) becomes high level, and AND circuit
(AN1) and (AN2) become active. The microcomputer (μC)
After that, eight pulses are output from the terminal (SCK),
Pulse of IC card (CD) via AND circuit (AN1)
Input to pin (SCK). In response, the IC card (C
D) Synchronizes the 1-bit signal with the rising edge of the pulse.
Output from terminal (Sout). The microcomputer (μC)
AND circuit (AN2), OR circuit
Input the signal output via (OR3). This is 8
To complete one serial communication. This input data
The contents of the data are shown in Table 1. As is clear from Table 1,
The presence / absence of a card and the type of card are determined using two bits (b1, b0).
Separate.   (B1, b0) = (0,0) when there is no signal
Is not inserted), the IC card (CD) is inserted
Not indicate. (B1, b0) = (0,1) is inserted
That the changed IC card (CD) is a mode setting change card
(B1, b0) = (1, 0) indicates the inserted IC card (C
D) is an exposure program card, and (b1, b
0) = (1, 1) is the inserted IC card (CD) is a demo car
Indicates that the   Returning to the flow of FIG. 1, the microcomputer (μC)
IC card (CD) is attached to the camera from the force data
(# 60) to determine if the card is not inserted.
The terminal (CSCAD) to indicate the end of data communication.
Set to low level (# 65), then the battery is installed
Is determined by the battery flag (BATF) (# 75). battery
When installed, this flag (BATF) is reset
So the internal RAM area RAMP is in the ROM of the microcomputer (μC)
The stored exposure program is loaded (# 80).
And it is an exposure program by IC card (CD).
Reset the flag (PWF) (# 85), and
Proceed to step # 95.   On the other hand, if the battery flag (BATF) is set
In this case, the program determination flag (PWF) is determined (# 9).
0) If set, IC card (CD) is pulled out
This subroutine is considered to have been executed.
The process proceeds to step # 80. Program judgment
If lag (PWF) is not set, ROM is stored in RAMP
The contents of the exposure program stored in
And the process proceeds to step # 95. In step # 95
Sets the demo card flag (DEMF) indicating that the demo card is installed
Reset. Next, a field indicating whether mode setting is possible
The Lum flag (WEDF) is determined (# 100). Note that this
The mode setting enable flag (WEDF) is set to the microcomputer (μC) E^Two
The battery is removed because the flag is written in the PROM.
Or, even if it is attached, once it has been written,
Is not triggered.   If the above mode setting possible flag (WEDF) is set
Display the mode in which the setting can be changed and return
(# 105). If not, skip step # 105.
Kip and return. Here, this mode display and
And the mode setting switch (see Fig. 2) shown in Fig. 6.
explain. As shown in FIG.
Switch 2 has four mode setting switches (2-1) in the outer frame.
To 2-4) are displayed.
Is displayed once the change card is inserted, and
It will always be displayed even if the card is removed. Change the setting once
If no code is inserted, no indication is made. Also on
The display device (2) is a second display device (DISP in FIG. 4).
It corresponds to 2) and also serves as a switch for mode change.
And press lightly on the small box.
Or the mode setting value of the pressed part or the mode change
Becomes possible.   Returning again to the flowchart of FIG. Step # 60
Determines that an IC card (CD) is inserted
And the microcomputer (μC) determines the type of inserted IC card.
It is determined from the data input in step # 55. setting change
If it is a card (# 110), the process proceeds to step # 115. S
In step # 115, the mode setting enable flag (WEDF) is set to E^TwoPRO
Read from M (E^TwoReading when PROM is built-in
Is performed in the same manner as a normal ROM. ) Judge this
You. When set, the mode can be set.
The terminal (CSCA) to indicate the end of data communication.
D) is set to low level, and the routine proceeds to step # 95. mode
When the settable flag (WEDF) is not set,
Continue serial communication (SIO) (# 125)
(CS130) to low level (# 130). And enter
Input data (CHISF, CHAEF, CHDRF, CH correction F (contents
Will be described later), WEDF set)^TwoP
The data is written in the ROM, and the process proceeds to step # 95 (# 135). Inserted
If the inserted IC card is an exposure program card,
The process proceeds from step # 140 to # 150 to perform serial communication. So
Then, 1 is added to N (# 155) to determine whether N is 2.
(# 160), if 2, the terminal (CSCAD) is low level
To end 2-byte data communication (# 16
Five). If N is not 2, return to step # 150 and execute serial
Continue communication. Exposure program by serial communication
The 2-byte data content read from the card is
11 bits are the number of bytes required to write data (about 2K
), And 5 bits are the program type (32 types)
Is also specified. In the embodiment, two types of exposure professionals are used.
Program, but various other exposure programs
Ram can be added. Microcomputer (μC)
When the 2-byte data communication is completed,
A program that indicates whether or not the remembered content has been loaded into RAMP.
Determine the program load flag (PWF) (Step # 17)
5) If not set, go to step # 180,
Set N = 0 and set serial number to read the contents of the exposure program.
Communication (# 185) and one data communication
Then, 1 is added to N (# 190), and N is K (K is
(The number of bytes entered in steps # 150 to # 160)
Data communication up to (# 195)
A program indicating that the contents of the program card have been loaded
Set the ram load flag (PWF) (# 205) and
Proceed to Step # 117. The exposure program read from the IC card
The program data is loaded into RAMP of microcomputer (μC) sequentially.
Is executed.   In step # 175, the program load flag (P
WF) is already set, step # 210
To the IC card exposure program stored in RAMP.
A type flag (PAF) indicating that the system is A type
It is determined whether or not is set (# 210). Set
If it has been inserted, it is inserted this time in step # 215.
Whether or not it is an A type in the IC card exposure program
If it is determined that the type is A, the process proceeds to step # 117.
Data communication without loading the contents of the IC card,
If it is not the A type, reset the A type flag (PAF).
Set and proceed to step # 180, steps # 185 to # 19
5 Load the contents of the IC card. A type flag (PA
If F) is not set, the IC inserted this time
Check whether the card exposure program is B type or not.
In the case of the B type, the IC car
Proceed to step # 117 without loading the contents of
If not, set the A type flag (PAF)
Proceed to step # 180 to load the contents of the IC card.   When the inserted IC card is a demo card,
A “P PUSH” display proceeds from step # 140 to step # 235. So
The demo card flag (DEMF) indicating the demo card.
(# 240) and set the terminal (CSCAD) to low level.
(# 235), the data communication is completed, and the process proceeds to step # 100.
Whether or not the mode setting flag (WEDF) is set
Judgment, if not set, display the settable mode
Show (# 105).   In this embodiment, the mode setting change card is 4
The settings can be changed for each mode.
The display shown in Fig. 6 is performed by inserting the card once.
However, the mode setting change card is one mode with one card.
Mode that can be changed only, or a few
The code can be changed. Read data at this time
FIGS. 7 and 8 show a modification of the control flow of the display and display.
Shown in   FIG. 7 shows a modification of steps # 115 to # 135 in FIG.
Show.   Serial communication (SIO) is performed (# 125), and the terminal (CSCA
D) Set to low level to end data communication (# 130). Next
From the data input by serial data communication
Determine the type of setting change card (# 131 ')
Corresponding E^TwoThe bit specified by the specified address of the PROM
Write (# 132 '). For example, one byte of IC card
1 bit b0-b3 of data is changed ISO in order, AE
Mode change, drive mode change, exposure compensation change bit
The microcomputer (μC) determines this input data.
E corresponding to the bit set separately^TwoPROM prescribed
Data (flag) is set in bits b0 to b3 of the
I just want to   With the modification of the above mode setting change method,
How to change the code display (steps # 100 and # 105 in Fig. 1)
The flow of FIG. 8 shows whether it is necessary to make further changes.   Briefly explaining this, E^TwoThe data stored in the PROM
Data (flag) is determined one by one in each mode, and accordingly
6, one of which is displayed. concrete
Has the ISO change flag (CHISF) set in the b0 bit
If there is, display this (# 100 ', # 101') and set
If not, it is not displayed. The same applies hereinafter
, Change flag (CHAEF) is set to AE mode b1 bit
If so, this is displayed (# 102 ', # 103') and b2
Drive mode change flag (CHDRF) set in bit
If so, this is displayed (# 104 ', # 105') and b3
Exposure compensation mode flag (CH complement F) is set in the bit
If so, this is displayed (# 106 ', # 107').   Below is a subroutine for judgment and reading of IC card
To end.   Returning to the flowchart of FIG.
After completing the subroutine (# 15), the microcomputer (μC)
Set the battery flag (BATF) indicating battery installation (#
20), ΔEv (exposure compensation amount), Av (aperture value), Tv (shutter
Speed) to the Apex values, “0”, “5”, “7”, respectively.
Initialize (# 25, # 30, # 35). And the film feeling
To the subroutine (# 36) for reading
Read the Lum sensitivity. This subroutine is shown in FIG.
To explain, first, the film used is DX code
Film (hereinafter referred to as DX film).
(# 36-1), if it is a DX film, step # 36
The film sensitivity Sv is read at -2, and the routine returns. DX
Non-film or film loaded
If not, go to step # 36-3 for film speed (Sv)
To "5 (Apex)"
On.   Next step # of film sensitivity reading subroutine # 36
At 37, the P mode is set as the AE mode.
Set the mode flag (PMF).
Set the single shooting mode as the eve mode, and step # 40
Now, enable all interrupts (SPINT, PINT, external INT)
To complete the initial setting. <Switch operation interrupt>   Next, the shooting preparation switch (S1) or the mode setting
Any of the change switches (S5) to (S8)
The control when it is turned on is shown in the flowchart shown in Fig. 10.
It will be described with reference to FIG.   First, the microcomputer (μC) interrupts this flow.
Determines whether the shooting preparation switch (S1) is used
(# 255), interrupted by the shooting preparation switch (S1)
Use the mode setting change switch (S5 to S8)
The process proceeds to the Key1 routine (# 395) as an interrupt. This le
The routine is shown in FIG. 11 and described first.
(Trl) is turned off to stop driving the external device (# 39
9). Next, a flag (W
EDF) is determined (# 400), and this flag (WEDF) is set.
If not, the mode setting cannot be changed and the
All indications shown in FIG. 6 blink for 2 seconds (# 405), 2 seconds
Is elapsed (# 410), the display is turned off and stopped (# 4
12). The mode setting change flag (WEDF) is set
To turn on the mode setting switch (S5 to S8)
Drive mode setting, ISO setting, AE mode setting,
The routine proceeds to the correction setting routine (# 415-425).   Next, for one IC card, one change function or two
FIG. 11A shows an example in the case of having the changing functions of (1) to (3).   As can be seen from comparison with Fig. 11, each mode is selected.
Mode indicates changeable in C
Flags (CHDRF, CHISF, CHAEF, CH correction F) are set
(Steps # 416, # 421, # 426, # 40)
8) If set, each setting is the same as in Fig. 11.
Proceed to the fixed mode subroutine. If not set
In the case shown in FIG. 6, a table indicating the mode is displayed.
Display, for example, "ISO" display for 2 seconds in ISO setting mode
Flashes for a while and stops (steps # 417, # 422, # 427, # 40
9, # 418).   In this case, FIG. 7 which is a modification of FIG.
The flowchart of FIG. 8 is used.   Before explaining each routine, the liquid crystal shown in FIG.
FIG. 12 shows the contents of the shadow information display device 1 (DISP of FIG. 4).
1). FIG. 12 shows a full lighting state. Of "PAMS"
“P” is the AE mode program mode (hereinafter referred to as P mode).
Do). “A” is an aperture priority mode (hereinafter, A mode),
"M" is manual mode (hereinafter M mode), "S"
Indicates the shutter priority mode (hereinafter, S mode), respectively.
I have. "Av, Tv, ISO" is the 4-digit number displayed beside it
The "Av" is used to indicate what the value represents
Aperture value, "Tv" is shutter speed, "ISO" is fill
The respective sensitivities are shown. The lower code is a two-digit number "Sat. Sun.
"Day" is the exposure compensation amount, and "SC" is the shooting drive mode.
"S" indicates a single shooting mode, and "C" indicates a continuous shooting mode. <Mode setting / change routine>   Each routine shown in FIG. 11 will be described. (A) Drive mode setting   First, the drive mode routine will be described with reference to FIG.
Then, when entering this mode, the microcomputer (μC)
Only "S" or "C" is displayed for drive mode
Yes (# 430). And up switch (S up)
Or whether the down switch (Sdn) is turned on or not.
Judge in steps # 435 and # 440, respectively, either one is ON
If so, the process proceeds to step # 450. Steps
In # 450, the drive mode display is changed to the other ("S").
→ ← “C”), time to prevent continuous switching
(For example, 500 msec.) (# 455).   Next, a flag (continuous shooting F) indicating the continuous shooting mode is determined.
(# 456), reset when set (# 45
7) If not set, set this
Later (# 458), the process proceeds to step # 435. Which switch
If neither (Sup) nor (Sdn) is pressed, step # 43
5, Repeat # 440. (B) ISO setting   Next, the ISO setting routine will be described with reference to FIG.
You. First, the microcomputer (μC) is mounted on the liquid crystal display device 1.
Only "ISO" and the value of film sensitivity (Sv) at that time are 4
It is displayed on the numeric display of the digit (# 460). Up switch
H (S up) is turned on (# 465), the current film feeling
Add “0.5” (apex) to the degree (Sv) (# 470),
On the other hand, if the down switch (Sdn) is turned on (# 47
5) Subtract “0.5” from the film speed (Sv) (# 48
0), Film sensitivity (Sv) corresponding to this value is displayed as ISO value
Yes (# 485). In this case, as in the drive mode,
To prevent continuous switching, set the time at step # 490
After waiting for a while, the process returns to step # 465. Any sui
If the switches (Sup) and (Sdn) are not turned on,
Repeat # 465 and # 475. (C) AE mode setting   Next, the AE mode setting routine is described with reference to FIG.
I do. First, the microcomputer (μC) is only for the current AE mode
("P", "A", "M", "S")
And turn off the other lights (# 495). And up switch
When (Sup) is ON, P mode → A mode
→ M mode → S mode → P mode
Cycle in one direction to enter the mode one step forward from
To the switch (# 505), while the down switch (Sd
If n) is ON, P mode → S mode → M
Forward in reverse order, such as mode → A mode → P mode
(# 530). If the mode is changed,
Mode flag, specifically PMF and A mode in P mode
AMF in mode, MMF in M mode, and SMF in S mode.
And reset the flags of other modes (# 51
0), the changed mode is displayed (# 515). Soshi
Wait for time to prevent continuous changes
Loop to # 500. Which switch (Sup), (Sd
n) If not turned on, the steps "# 500, # 525
repeat. (D) Exposure compensation mode   Next, the routine of the exposure correction will be described with reference to FIG.
First, the microcomputer (μC) calculates the current exposure correction amount,
For example, only “+0.5” is displayed and the others are turned off (# 53
Five). When the up switch (Sup) is ON
(# 540), 0.5 is added to the correction amount (ΔEv) (# 545),
Switch (Sdn) is ON (# 56
0), 0.5 is subtracted from the correction amount (ΔEv), and this correction amount (ΔEv)
Is attached and a numerical value is displayed (# 550). And the above
Wait for time to prevent continuous changes (# 55
5) and return to step # 540. Both switches are ON
If not, repeat steps # 540 and # 560
You. To exit from each setting mode described above,
Operate the shooting preparation switch (S1), insert or remove the IC card.
To change the mode setting.
Good. Alternatively, an internal timer is provided and a certain time (for example,
If the switches (Sup) and (Sdn) are not turned on
May be stopped. <When the shooting preparation switch is ON>   Returning to FIG. 10, in step # 255, the shooting preparation
When switch (S1) is ON, step # 265
And reset the power hold timer
Start with   Next, proceed to the card determination and reading subroutine,
Reads information from IC card (# 275) and supplies power
Data (Tr1) is turned on (# 280). In addition, card judgment and reading
For the subroutine, as described with reference to FIG.
It is. Subsequently, the microcomputer (μC) operates the photometric circuit (fourth
(Figure LM) Outputs the photometry start signal and mounts the
Enter lens-specific data from the lens (LE)
To the subroutine (# 290) for reading the lens data. (A) Reading lens data   Fig. 17 shows the flow of the lens data reading subroutine.
To explain, first, the variable K is set to 0 (# 570).
Set the child (CSL) to high level (# 575). By this
The AND circuits (AN3) and (AN4) in FIG.
Become. Next, the microcomputer (μC) connects the photographing lens (LE)
Silicon data exchange between the two (# 580), K
Is added to "1", and whether this K has reached the predetermined integer value K1
Whether or not data communication has been performed a predetermined number of times (K1)
(# 585-590). Number of serial data communication K becomes K1
If it is, set the terminal (CSL) to low level and
(# 595). If not, step # 5
Return to 80 and continue data communication. Where the shooting lens
The data input from the (LE) side is the open F-number (Avo)
It is a large aperture value (Avomax). (B) Exposure calculation   Next, a subroutine of exposure calculation for performing exposure calculation
Proceed to (# 295). This subroutine is shown in FIG.
First, the microcomputer (μC) calculates the open metering value (Bv
o) from the photometric circuit (LM) (# 600), and the exposure value (E
v) is calculated by Ev = Bvo + Avo + Sv (# 605). And
The exposure mode is indicated by flags indicating the mode.
Judgment. First, a flag (PMF) indicating the P mode is set.
When the AE is set (# 610), the AE shown in FIG.
After displaying only "P" of the mode display "PAMS" (#
612), P mode operation subroutine (# 615) (for RAMP
Go to (Contents Stored in Memory)
You. In this embodiment, the camera is incorporated in the camera as a P mode.
Normal program (PN) and IC card
Portrait, professional with low depth of field for still images
Gram (PA) and the subject also stored on the IC card
Program (PB) with the depth of field as deep as possible
Shutter speed that does not cause camera shake.
You. ) And one of these programs is
Input to RAMP. The program diagram for that
As shown in FIG. This program diagram is open as a lens F
Value is 1.4 and the maximum F value is 16
You.   Flow chart for executing the program diagram shown in FIG.
The charts are shown in FIGS. 20 (I) to (III). (B-1) Normal program (PN)   Using FIG. 20 (I), the exposure by the normal program
To explain the output operation, first, the display device 1 shown in FIG.
Only the left end of the 7-segment numerical display is displayed as "P"
(# 679), whether the aperture value (Av) is Av = (2/3) (Ev-11/2)
(# 680), and this aperture value (Av) is
Compared to the large aperture value (Avmax) (# 685)
At this time, the aperture value (Av) is set to the maximum aperture value (Avmax) (# 6
90). On the other hand, the aperture value (Av) is smaller than the open aperture value (Avo).
The aperture value (Av) as the open aperture value (Avo)
(# 720), if neither (Avomax ≧ Av ≧ Avo),
Using the calculated value as the aperture value (Av), the next shutter speed
Proceed to step # 695 for calculating (Tv). This performance
The calculation is performed by Tv = Ev−Av, and the obtained shutter speed is calculated.
Mode (Tv) is the maximum shutter speed (Tvmax) of the camera
(# 700) to determine whether the maximum
Shutter speed (Tvmax)
Speed (Tv) is the maximum shutter speed (Tvmax)
(# 705), the P mark blinks to warn (# 71)
0). Then, the process returns to the original flow. First Sha
If the speed is not exceeded, skip # 705 and # 710.
Kip and return. (B-2) PA program   Next, a program with a shallow depth of field (PA)
Referring to FIG. 20 (II), the calculation based on
Using the left three of the # 722 segment numerical display Is displayed. Next, in step # 725, the open aperture value (Avo)
Is less than or equal to “3”.
The aperture value (Av) is set to “3” (# 735), and the open aperture value (Avo) is
If the value exceeds “3”, use the down value (Av) as the open aperture value
(# 730), shutter speed (Tv) from Tv = Ev-Av
Calculate (# 740). This calculated shutter speed (T
v) exceeds the maximum shutter speed (Tvmax)
Is determined (# 745), and if it does not exceed, return immediately.
You. When the maximum shutter speed (Tvmax) is exceeded
Is the highest shutter speed (Tv)
(# 750) as (Tvmax), and the aperture value (Av) is Av = Ev−Tv
Recalculate with (# 755). Next, the aperture calculated by this calculation
Determines whether the value (Av) exceeds the maximum aperture value (Avmax)
(# 760), if not, return to the original flow
To If it exceeds, set the aperture value (Av) to the maximum aperture value
(Avmax) (# 765), flashing the P mark to warn
(# 770), return. (B-3) PB program   Next, an exposure performance using a program with a large depth of field (PB)
The calculation will be described with reference to FIG. 20 (III). First, step
# 773 from the left end of 7-segment numerical display Is displayed. Then, in step # 775, the shutter speed
Set the aperture (Tv) to “6” and calculate the aperture value (Av) as Av = Ev−6
(# 780). And this aperture value (Av) is the maximum aperture
It is determined whether the value exceeds the value (Avmax) (# 785).
If not, proceed to step # 815 and set the aperture value (Av) to full aperture
It is determined whether the value is smaller than the value (Avo). Must be small
If it is small, it returns to the original flow
Sets the aperture value (Av) to the open aperture value (Avo) (# 820),
Find shutter speed (Tv) from Tv = Ev-Av and
(# 825), and in step # 785, the aperture value (A
If v) exceeds the maximum aperture value (Avmax), the aperture value (Av)
As (Avmax) (# 790), shutter speed (Tv)
Is calculated from Tv = Ev−Av (# 795). This calculated
Shutter speed (Tv) is the highest shutter speed (Tvma
x) is judged whether it exceeds (# 800).
Returns to the original flow.
Speed (Tv) and maximum shutter speed (Tvmax)
(# 805), flashes the P mark in step # 810 and warns
And return. (B-4) A mode (aperture priority mode)   Referring back to FIG. 18, when the aperture priority mode is set,
Proceed from # 620 to # 622. In step # 622, AE mode
Display only "A" of the "PAMS"
(Tv) is calculated by Tv = Ev-Av (Av is the set value)
I do. The calculated shutter speed (Tv) is the highest shutter speed.
It is determined whether or not the speed exceeds the shutter speed (Tvmax) (# 6
30) If it exceeds, set the highest shutter speed (Tv)
A mark as shutter speed (Tvmax) (# 635)
Blinks (# 640) and returns. Shout
If the speed does not exceed the maximum speed,
On. (B-5) S mode (shutter speed priority)   When the AE mode is the shutter speed priority mode
Goes from step # 645 to # 647 and displays AE mode
Only S in “PAMS” is displayed and the aperture value (Av) is given as Av = Ev
This aperture value is obtained from -Tv (set value) (# 650).
To check if the value exceeds the maximum aperture value (Avmax)
Judgment is made in # 655, and if it exceeds, in step # 675
S mark with aperture value (Av) as maximum aperture value (Avmax)
Blinks and returns. Aperture value (Av) is the maximum aperture value
If it does not exceed the maximum aperture value (Avo)
It is determined whether it is smaller than (# 660), and if not smaller
Returns to the original flow chart.
Sets the aperture value (Av) to the open aperture value (Avo) in step # 665
Then, the S mark is flashed, and the process returns (# 670). (B-6) M mode (manual mode)   If you are in manual mode, go to step # 645
Proceed to step # 677, and select “PAMS” from the AE mode display.
Only "M" is displayed and the routine returns. (C) Changing aperture value and shutter speed (Key2 routine)   Returning to FIG. 10, after completing the exposure calculation subroutine,
Operation of up switch (Sup) and down switch (Sdn)
Sub-blue that changes aperture value and shutter speed
Proceed to Chin Key2 routine.   This is shown in FIG. 21 and described. In this routine,
In step # 820, the up switch (Sup) is turned on.
Judge whether it is ON or not, and turn on the up flag (UPF)
Set (# 825), while in step # 830, dow
Switch (Sdn) is turned on, and it is turned on.
If it returns to the up flag (UPF) (# 835),
Proceed to Step # 840. If neither switch is turned on
Returns. And the following steps # 840 ~
In # 870, the aperture value,
The shutter speed can be changed.   When the mode is the P mode, steps # 840 to # 845
Proceed to the program shift subroutine. In A mode
When changing the aperture change from step # 850 to # 855
Proceed to routine. When in the S mode, step #
Subroutine for changing shutter speed from 860 to # 865
move on. These subroutines are summarized in FIG.
As shown in FIG. 22, program shift (P change) and aperture
Change (A change) is the same.
The up switch (Sup) is turned on.
Flag (UPF) and if set
Goes to step # 895 and the aperture value (Av) is the maximum aperture value
(Tvmax), and if equal, no more
Is returned as impossible. Aperture (Avo) is the best
If not equal to the large aperture value (Avmax), go to step # 900
Add 0.5 to the aperture value (Av), and in step # 905
Subtracts 0.5 from the shutter speed (Tv), and
Aperture value (Av), shutter speed (Tv), and
On.   On the other hand, if the up flag (UPF) is not set
When the down switch (Sdn) is turned on,
Proceed to step # 910, where the shutter speed (Tv)
Judge whether the speed is equal to the speed (Tvmax)
If not, the process returns as unchangeable. Shutter speed
(Tv) is equal to the maximum shutter speed (Tvmax)
If not, the aperture value (Av) is the open aperture value in step # 915
(Avo) is determined. If they are equal,
Return as impossible. If not equal, aperture value
0.5 is subtracted from (Av) (# 920), and the shutter speed (T
v) is added to 0.5 (# 925), and the aperture value (Av) and
Return to the shutter speed (Tv) and return.   When the shutter speed is changed (S change),
Switch (Sup) is turned on.
F) is determined, and if set, step # 9
Flow and setting for adding 0.5Ev of shutter speed after 10
If not, shut down after step # 895.
Execute the Taspeed 0.5Ev subtraction flow.   In FIG. 21, if none of the above modes
As in manual mode, step # 870
Proceed to the manual change subroutine. This is shown in Figure 23.
Will be described.   As shown in FIG. 23, this routine
Aperture change switch (SA) in mode (see Fig. 4) is ON
Whether the aperture or shutter speed changes depending on whether
Is determined (# 930). If aperture change, step
Proceed to # 935 and the up flag (UPF) is set
It is determined whether or not. If set, up
Proceed to step # 940 as switch (Sup) is turned on.
Whether the aperture value (Av) is the maximum aperture value (Avmax)
And if they are equal, return as is, and equalize
If not, add 0.5 to the aperture value (Av) and retard
(# 945). Up flag (UPF) is set
If not, the down switch (Sdn) is turned on
Then go to step # 950, where the aperture value (Av) is
(Avo), and if they are equal,
Return as it is, and if they are not equal, check the aperture (Av)
0.5 is subtracted from them and the process returns (# 955). Aperture change switch
When the shutter (SA) is not turned on, the shutter speed
The process proceeds to step # 906 as a mode change mode. This step
The up flag (UPF) is set in the
Judge whether it is set or not.
Switch (Sup) is ON, and proceed to step # 965.
The highest shutter speed (Tv)
max) is equal to
If they are not equal, set the shutter speed (Tv) to 0.
Return by adding 5 (# 970). Up flag (UP
If F) is not set, go to step # 975
And the shutter speed (Tv) minus 0.5
To   Referring back to FIG. 21, in each AE mode, the aperture value or
After changing the shutter speed, go to step # 880.
Proceed and wait for time to prevent continuous changes
Starts the timer for the hold time
5 seconds is newly measured (# 885). Key2 support is now complete.
Exits the routine. (D) Display and shooting   After completing the Key2 subroutine,
Return to the list, the microcomputer uses Av, Tv and segment
And in the A mode, the aperture value (F value) and the
Sometimes shutter speed (for example, 1/60) and Tv are displayed.
Shown in other exposure modes (not shown).
In the viewfinder, the aperture value and shutter speed
Displayed). For indications other than the above,
Output correction amount (ΔEv), AE mode display, drive mode table
Is performed (# 305). And the demo card is inserted
Demo flag (DEMF) is set to indicate
Is determined (# 310), and when set
Proceeds to step # 370 as the release prohibition mode.
No. In step # 370, the shooting preparation switch (S1) is turned on.
It is determined whether or not the
In step # 370, the timer is reset and started.
, And the process returns to step # 285.
When the above switch (S1) is OFF,
Determine if the timer has elapsed for 5 seconds, and if not,
If not, the process returns to step # 285. 5 seconds have passed
Resets the release flag,
Set the output port to low level and stop (# 385, 39
0).   In step # 310, the demo card flag (DEMF)
If not set, go to step # 315
To determine whether the release switch (S2) is turned off.
Judgment by the level of the input port (IP11)
If the switch is OFF, the reel switch (S2) is OFF.
Proceed to top # 370. Input port (IP11) is low level
Proceeds to step # 320, and sets a flag (continuous
Determine whether or not the photo F) is set, and
If so, step # 33 is performed to perform the release operation.
Go to 0. The continuous shooting flag (continuous shooting flag) is set
When the camera is not in
Indicates whether the shutter was released once with the switch (S1) ON
The flag (release F) is determined (# 325). Release
When the flag (release F) is set,
Suppose that the release is performed once in the shooting mode (S mode)
Then, the process proceeds to step # 370 to prohibit the release operation.   Release flag (release F) is not set
Sometimes, the process proceeds to step # 330, and the release operation is performed.
U. The microcomputer (μC) prohibits interruption to this flow
After that, the exposure data (Tv, Av) is sent to the exposure control circuit (AE).
Output. The exposure control circuit (AE) receives the data
Imming starts release, aperture, mirror up,
Shutter control is performed sequentially. And focal plane
The switch (S3) is turned on when the second act of the shutter is completed.
The microcomputer (μC) sends this to the input port (IP10).
When detected (# 340), the hoisting start signal is sent to the motor control circuit.
(MD) (# 345). The switch (S4) turns ON,
When the microcomputer (μC) detects the completion of winding (# 350),
A motor stop signal is output to the motor control circuit (MD) (#
355), and set the release flag (release F) (# 3
60), permit the interrupt (# 365), and proceed to step # 370.
No. (E) External interrupt   Next, insert or remove the IC card, or back cover
External interrupt routine by closing
I will tell.   First, from the back cover closing interrupt,
When the configuration switch (SBK) is turned on, in FIG.
A pulse is output from the on-shot circuit (OS1),
Via the path (OR1), the pulse enters the external INT port,
The microcomputer (μC) executes the interruption of this flow. This
At the same time, the reset
(RSFF) is set.   Also in FIG. 24, the microcomputer (μC)
Enter whether the card was inserted or removed from the IC card
Judgment is made based on the port (IP5) (# 985). Enter now
Since the port (IP5) is at high level, the microcomputer (μ
C) proceeds to step # 990 as an interrupt by closing the back cover
Only, the DX film ISO reading
And read the film sensitivity. And input port
Reset the RS flip-flop from the port (OP1).
1 pulse is output from the input port (OP1) (# 995)
Enable interrupt by shooting preparation switch (S1) and return
(# 1000).   When an interrupt is caused by inserting or removing an IC card
Is a pulse from the one-shot circuit (OS2) or the OR circuit (OR
1) Input to the input port (external INT) via
(ΜC) executes an external INT interrupt. Microcomputer
(ΜC) proceeds from step # 985 to # 1005,
In step # 1005, interrupt of S1INT and PINT is prohibited.
Stop and stop the card judgment and reading described in FIG.
And read the card information. And PINT
Allow (# 1020) and proceed to step # 995.   Next, the interrupt by turning on the program switch is shown in Fig. 25.
And will be described. First, the microcomputer (μC) is a demo car
Whether or not the flag (DEMF) indicating
Judge at step # 1205, if not set,
Assuming that P mode is selected for Elect, go to Step # 1040
move on. In step # 1040, the AE mode display "P, A, M, S"
"P" mode is displayed, and a flag indicating this mode
(PMF) is set and a flag indicating the other AE mode
And return. In step # 1025
When the flag (DEMF) is set,
The flag (WEDF) that indicates that the
The DEMO subroutine described below
To the routine, and after the subroutine ends, go to step # 265
move on. On the other hand, when the flag (WEDF) is not set
Skip step # 1035 and step # 265
Proceed to. (F) Demo (DEMO) subroutine   The above DEMO subroutine is shown and described in FIG. this
When the subroutine starts, first, the microcomputer (μC)
Displays only the ISO mode of the display shown in the figure.
(# 1055). Then, in the display device 1 shown in FIG.
Display only "ISO" (# 1060). Next, remember
Once the film sensitivity is stored in the register (SvIR)
And set the film sensitivity (Sv) to the initial value of 2.5 (# 106
5,1070). In step # 1075, the film speed (S
v) is added to 0.5, and in step # 1080 this value is first converted to a numerical table
Show. This value is equivalent to "ISO25" and can be set on the camera.
This is the smallest value that can be obtained. In Step # 1085, continuous
Wait time to prevent change, film speed (Sv)
Until it reaches “11” (equivalent to “ISO3200”).
"0.5" is sequentially added to the degree (Sv) and displayed (# 1085, # 1
090). Then, from step # 1095, the above register
Film speed (SvI) once stored in (SvIR)
And proceeds to step # 1105.   In step # 1105, a table showing the AE setting mode shown in FIG.
Display only "PAMS". And the liquid crystal shown in FIG.
Only "PAMS" in the AE mode of the display device 1
→ A → M → S ”(# 1110 to # 1145). In addition,
There is a certain waiting time between each display, and the display
The process is discontinuous every waiting time. (# 111
5, # 1125, # 1135, # 1145).   Next, the microcomputer (μC) proceeds to step # 1155,
In the display of FIG. 6, “DRIV
`` E '' only, and the drive model shown in Figure 12.
Only the code display "S" and "C" are displayed as "S → C" in order.
(# 1160 to # 1175). In addition, continuous display between each display
There is a waiting time to prevent the problem.   Next, in step # 1185, the microcomputer (μC)
Only "+/-" indicating the exposure compensation setting mode is displayed
And the stored exposure compensation amount (ΔEv) “−2.5”
Is stored in the register (ΔEvIR) once (# 1190),
The correction amount (ΔEv) is set to “−2.5” (# 1195). Soshi
In step # 1200, add “0.5” to the correction amount (ΔEv),
Including the sign, display in the display field of the exposure compensation amount in Fig. 12.
(For example, “−2.0” (# 1025)). At this time,
Is turned off in the same manner as described above. This correction amount
Add “0.5” to the correction amount until (ΔEv) becomes “2”
Next is displayed (# 1210). The correction amount (ΔEv) becomes “2”
And the correction amount (ΔEv) in the register (ΔEvIR).
Re-memory the corrected amount (ΔEvI) and return.
(# 1245).   Figure 26A shows the settings of modes 1 to 3 with one IC card.
The DEMO routine for the case where the
Show.   Explaining only the differences from Fig. 26,
Before displaying, indicates whether the mode can be changed.
Has passed the check mode of each flag. Corresponding
Steps are # 1050, # 1100, # 1150 and # 1180
If it is not possible to change the settings of the
I try not to. <Modification>   Next, a modified example of the mode setting change switch is shown in FIG.
This mode setting change switch (2 ') is
This is an open switch and does not provide the display function as shown in FIG.
No. By repeatedly turning on this switch (2 '),   AE mode setting → ISO setting → correction amount setting → drive mode
Setting And so on.   See the camera
FIG. 28 shows a liquid crystal display (1 ') provided on the upper part of the body.
Like "ISO", "DRV", "AE", "+/-"
Is provided and displayed. This display is
・ After the change card is inserted once, the display continues
I can.   Operation method in this modification and mode switching at that time
The replacement control is performed by the circuit diagram shown in FIG. 29 and the flowchart shown in FIG.
This will be described with reference to a flowchart. Fig. 29
FIG. 4 is a modification of the mode setting switch of FIG.
Switches (S5) to (S8) are single mode setting change switches S
5 '(corresponding to the switch (2') in FIG. 28).
And the input ports (IP1) to (I
P4) has been replaced with one input port (IP1 ')
And the display device is (DISP1 ') (the liquid crystal display device of FIG. 28).
(1 '). )
You.   FIG. 30 is a flowchart of the S1INT shown in FIG.
The key 1 routine shown in step # 395 is a modification of FIG.
This is an example.   Refer to this flowchart for this type of mode
To explain the setting change, the mode setting change switch
When (S5 '), that is, (2') is turned ON, S1INT in FIG.
It was executed and the shooting preparation switch (S1) was turned on.
Therefore, from step # 255, the key 1
Proceed to Chin. When proceeding to this flow, the microcomputer (μC)
First, turn off the transistor (Tr1) (# 1299), and then
Flag (WEDF) indicating that the setting can be changed
Is set (# 1300) and it is set
If not, select “ISO, DRV, AE,
"+/-" blinks for 2 seconds to warn and stop
(# 1305, # 1307). Mode setting possible flag (WEDF)
If it is set, the previous
Drive mode setting that indicates that it was a live mode setting
Determines the fixed flag (DRF) and sets this flag (DRF)
Is set to AE mode this time,
Set the flag (AEF) indicating the setting (# 1325), and
Reset the flag (DRF) indicating the Eve mode setting
(# 1330), proceed to AE mode setting routine (Fig. 15)
No. The drive mode setting flag (DRF) is set.
If not, set the AE mode setting flag in step # 1335.
This setting determines whether or not the AE (AEF) is set.
When the mode setting flag (AEF) is set, I
Set the SO setting flag (ISF) (# 1350) and set the AE mode
Reset the setting flag (AEF) (# 1355),
Proceed to the setting routine (FIG. 14). AE mode setting flag
If (AEF) is not set, step # 136
Proceed to 0 and ISO mode setting flag (ISF) is set.
Judge whether it is set or not.
Reset the ISO mode setting flag (ISF) (# 137
5), proceed to the ± compensation mode of exposure compensation (Fig. 16) (# 137)
Five). ISO mode setting flag (ISF) is set
When there is no drive mode setting flag (DRF)
Set to drive mode setting routine (Fig. 13)
Go on (# 1390). Note that each mode setting routine is
As shown in FIGS. 13 to 16 described above,
As shown in Fig. 28, "ISO", "DRV", "A
The part excluding "E" and "+/-", in other words, as shown in FIG.
Only applies to the same parts.   FIG. 31 is a modified example of FIG.
The number of modes whose settings can be changed per sheet is "1 to 3"
Show the case. The mode display of the setting change at this time is the seventh
When the change mode is added as shown in FIG. 8 and FIG.
And continue to display thereafter.   As is clear from comparison with FIG. 30, in FIG.
Steps # 1300 to # concerning the network setting change flag (WEDF)
In place of blinking display of all modes of 1307,
On the IC card to give a warning by flashing the card.
(CHAEF), (CHISF) (CH correction)
F), (CHDRF) value (this is the serial
Already read to microcomputer (μC) by data communication SIO
It is rare. ), Can each setting change mode be set?
Steps # 1315, # 1340, # 1365, # 138 to determine whether or not
0 is added. Each flag is set
That is, setting or changing of such a mode is specified.
If so, set each mode in the same way as in FIG. 30,
On the other hand, if the flag is not set,
・ Indication indicating the mode that cannot be changed, for example, AE mode setting
If this is the case, flash "AE" for 2 seconds to warn you,
(ΜC) stops (# 1320, # 1345, # 1370, # 138
5, # 1390).   Note that, in FIG. 31, the step numbers in FIG.
Step numbers indicate the same steps as in FIG.   In the embodiment shown in FIG.
A warning is displayed by flashing the display.
Does not warn you and only cycle the configurable modes
Mode that cannot be set by the photographer
And quickly change to the mode you want to change settings
We are making the transition possible. Specifically, compare with Fig. 31.
Then it is clear that the setting can be changed
Before proceeding to each setting mode, the step number of flag judgment
(# 1332, # 1357, # 1377, # 1392)
When the flag is set, the mode of each setting
Go to the next mode when not set
・ In the first step to determine whether to make changes
move on. That is, the step of determining whether to change the AE setting mode is performed.
Step # 1322, Step # 1332 to Step # 13
In step # 1357, it is determined whether or not to perform the ISO setting.
Then, change the exposure compensation from step # 1357 to # 1360
If it is the step # 1377 for determining whether or not to perform, the step #
From 1377 to # 1390, whether to change the drive mode
If it is the determination step # 1392, proceed from # 1392 to # 1310
Like that.   In the above embodiment, the IC card is provided on the camera body side.
However, if there is no space, it may be provided on the back cover of the camera.
In addition, as an IC card that allows function change settings, Possible card with program shift function Highlight / shadow function possible card If the model is one-shot AF, continuous
AF function switchable card If the camera has an AF function, AF priority, release excellent
Switchable card ahead If the camera has a self-function, it will switch to the self-time
Possible cards (eg 2 seconds, 10 seconds, 15 seconds)
Can be [The invention's effect]   As described above, according to the present invention, an advanced person can
By removing the prohibition, the exposure compensation value
Output parameters can be changed arbitrarily, while beginners
Operation is complicated by prohibition by prohibition means
Will not be lost or misconfigured.
Cameras that can properly respond to the needs of
Obtainable.   Furthermore, when beginners improve, prohibition by prohibition means
So that they can respond to requests
Without having to buy a new camera,
No extra burden is imposed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart of one main program of the camera according to the present invention, and FIGS. 2 and 3 are rear perspective views and partial front perspective views showing a display device and switches, respectively. ,
4 is a system configuration diagram of the camera, FIG. 5 is a flowchart showing a system reset routine, FIG. 6 is a plan view showing a mode setting switch, and FIGS. 7 and 8 are flowcharts shown in FIG. 9 is a flowchart showing a DX reading subroutine, FIG. 10 is a flowchart showing an S1INT subroutine, FIG. 11 is a flowchart showing a Key1 routine,
FIG. 11A is a flowchart showing a modification of FIG. 11, and FIG.
The figure is a plan view of the display device, FIG. 13, FIG. 14, FIG.
The figures show the drive mode, ISO setting mode, AE mode, ±
FIG. 17 is a flowchart of a lens data reading subroutine, FIG. 18 is a flowchart of exposure calculation, FIG. 19 is a graph showing a setting-changeable program diagram, and FIGS. 20 (I) and (II). , (III) are flowcharts each showing a setting routine of each program diagram in FIG. 19, FIG. 21 is a flowchart showing a Key2 routine, FIG. 22 is a flowchart showing a routine for P, A change and S change, 23 is a flowchart showing an M change routine, FIGS. 24 and 25 are flowcharts of interrupt routines for external INT and PINT, respectively, FIG. 26 is a flowchart showing a DEMO routine, and FIG. 26A is a modification of FIG. FIG. 27 is a rear perspective view showing a modification of the camera, FIG. 28 is a plan view of the display device of the camera in FIG. 27, and FIG. 29 is a modification of the system configuration of the camera FIG. 30 is a flowchart showing a modification of the subroutine of Key1, FIG. 31 is a flowchart showing another modification of Key1, and FIG. 32 is a flowchart showing another modification of the Key1 routine. is there.

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Masaaki Nakai               2-30 Azuchicho, Higashi-ku, Osaka City Osaka               International Building Minolta Camera Co., Ltd. (72) Inventor Akihiko Fujino               2-30 Azuchicho, Higashi-ku, Osaka City Osaka               International Building Minolta Camera Co., Ltd. (72) Inventor Hiroshi Otsuka               2-30 Azuchicho, Higashi-ku, Osaka City Osaka               International Building Minolta Camera Co., Ltd.                (56) References JP-A-61-238032 (JP, A)                 JP-A-61-238033 (JP, A)                 JP-A-58-126521 (JP, A)

Claims (1)

(57) [Claims] In a camera capable of changing the control element of the duplication type, having a plurality of change setting modes that can change and set a specific type of control element among the plurality of control elements,
Control means for selecting one of the change setting modes by performing a predetermined operation, including a card mounting portion, and control to be changed and set in the change setting mode even when a predetermined operation is performed by the selection means It is configured to prohibit the setting of the element while preventing the setting so as to allow the setting of the control element in the change setting mode according to the mounting of the card in the card mounting unit. Characteristic camera control device. 2. The camera control device according to claim 1, wherein the control element includes, for example, an exposure correction value. 3. 2. The camera control device according to claim 1, wherein the control element includes an automatic exposure mode.