JPH0248642A - Operation mode switching device for optical equipment - Google Patents

Abstract

PURPOSE:To obtain an optical machine which is easily used in a frequently used operation mode by switching the operation mode to one specified operation mode which is frequently used among plural operation modes freely switched from/to one another by only one operation of an operation tool. CONSTITUTION:A BC as the CPU for camera operation control provided on a camera body controls the operation of the whole of a camera including respective devices in the camera body and a flashing device 7 or the like. In an example of the exposure mode of the camera, mode A of diaphragming-priority exposure, a mode S of shutter speed-priority exposure, and a mode M of manual control of diaphragm and shutter speed are provided in addition to a program mode (mode P). The mode P which is most frequently used is defined as the specified operation mode, and the exposure mode is successively switched to the mode P, the mode A, the mode P, the mode S, the mode P, the mode M, and the mode P in order only by one operation of a push button or the like, thereby efficiently and easily operating the camera.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operation mode switching device for optical equipment such as a camera, exposure meter, or color meter.

More specifically, the mode setting means is provided with a mode setting means that can be freely switched to a plurality of operation modes of three or more, and an operation tool for sequentially switching the mode setting means to the plurality of operation modes each time the operation tool is operated. The present invention relates to an operation mode switching device for optical equipment that aims to centralize operation mode switching operations.

[Conventional technology]

A typical example of the operation mode switching device for the above-mentioned optical equipment is the exposure mode switching device in a camera, which has fully automatic program mode, semi-automatic aperture priority mode, shutter speed priority mode, and manual mode. One example is a switching device for switching to each operating mode of a certain manual mode.

Conventionally, in this type of operation mode switching device, such as the above-mentioned exposure mode switching device, each press operation on an operation key is recorded in each operation mode of program mode, aperture priority mode, shutter speed priority mode, and manual mode. A device is known that is configured to cycle through a plurality of operating modes, such as switching sequentially and then switching back to the program mode.

[Problem to be solved by the invention]

By the way, in this type of optical equipment, for example, when it comes to camera exposure modes mentioned above, the program mode, which is easy to operate, is often selected, and other exposure modes are used only in special shooting situations. There are many cases where there is one specific operation mode that is frequently used, and all other operation modes are used equally infrequently.

In the conventional operation mode switching device described above, the operation mode is switched cyclically to a plurality of operation modes, and each operation mode appears at the same frequency for each operation on the operating tool. When performing a switching operation, if one of these operating modes is frequently used as described above, it is necessary to repeatedly operate the operating tool in order to switch from an operating mode other than the specific operating mode to the specific operating mode. There are things to do. Moreover, the number of repetitions increases as the number of switchable operation modes increases. As a result, the switching operation of the operating mode becomes cumbersome and time-consuming, and especially in the case of a camera, there is a risk that a momentary photo opportunity may be missed due to the time-consuming operation.

Incidentally, it may be possible to provide a reset switch to switch the operating mode to a specific operating mode with a single press operation, but recently, the mode that can be freely switched in this type of optical equipment is the one mentioned above as an example. In addition to the exposure mode, there are various modes such as a film feeding mode and a focus adjustment mode, and normally all modes are configured to return to the initial state of their specific operation mode by pressing the reset switch. Therefore, it is difficult to say that it is useful when switching only one mode to its specific operating mode. However, providing a reset switch for each of these modes would impair the integration of operations and deviate from the initial purpose.

In view of the above-mentioned circumstances, an object of the present invention is to provide an operation mode switching device that can efficiently switch to a frequently used specific operation mode while centralizing operation mode switching operations. be.

[Means to solve the problem]

The characteristic configuration of the operating mode switching device for an optical instrument according to the present invention is that the mode setting means, which can be switched freely to three or more plural operating modes by repeated operations, is operated on the operating tool for sequentially switching the operating mode to the plurality of operating modes. A linking means is provided for switching the operation mode setting means in a state in which one of the plurality of operation modes is set to one specific operation mode by every other operation.

[For production]

In other words, one operation on the operating tool switches from the specific operating mode to the first operating mode other than the specific operating mode, the next operation on the operating tool switches to the specific operating mode, and further operation of the operating tool switches the specific operating mode to the first operating mode other than the specific operating mode. When the operating tool is repeatedly operated, the specific operating mode is switched to a second operating mode different from the first operating mode other than the operating mode, and the next operating tool switches to the specific operating mode. When switching to the operating mode, the other operating modes are sequentially switched, so even if you are in any operating mode other than the specific operating mode, you can switch to the specific operating mode with just one operation on the operating tool. Can be done.

Moreover, switching to a specific operating mode is possible with a single operation.
Rather than providing a reset switch separately from the operating tool,
Since this is done by operating the operating tool itself, it does not impede the consolidation of operation mode switching operations. Furthermore, even if a single reset switch is provided to return all modes to their respective specific operating modes in a configuration that allows switching between multiple modes, regardless of the operation of the reset switch, Each mode can be independently switched to a particular mode of operation.

〔Example〕

Hereinafter, the present invention will be described in detail based on the drawings.

2 to 4 are schematic diagrams of the overall configuration of the camera according to the present invention. This camera has a camera body (1)
And, the lens mount (IA) of this camera body (1)
), and a flash device (7), which is detachably attached to the hot flash of the camera body (1).

Figure 2 shows a state where the photographic lens (9) is not attached.
Figure 4 shows the photographic lens (9) and flash device (7).
) is not attached.

(11) is a release button for performing shooting operations;
2) is a main switch that switches between an operable state and a disabled state of the camera. (13), (14).

(15) and (16) are operation keys for switching the operating state.

(13) is a program mode that combines the normal program mode (hereinafter referred to as (P mode)) and the program mode that prioritizes the fastest shutter speed (hereinafter referred to as (P mode)).
This is a program mode key for switching between three modes: (referred to as I (mode)), and a program mode (hereinafter referred to as (PL mode)) that prioritizes the shutter speed at the limit of camera shake. Details of the three program modes mentioned above will be described later.

In (14), the drive mode is a mode in which the shooting operation is performed while feeding the film one frame at a time (hereinafter referred to as single mode), a mode in which the shooting operation is performed while feeding the film continuously (hereinafter referred to as This drive mode key is used to switch between three modes: (referred to as continuous mode) and a mode in which photographing is performed using a self-timer (hereinafter referred to as (self-mode)).

(15) sets the operating mode of the flash device (7) (hereinafter referred to as "flashini mode") to a mode (hereinafter referred to as "automatic flash mode") in which the flash is automatically emitted depending on the brightness of the subject, etc. Switch between three modes: a mode that always emits light regardless of the brightness of the subject (hereinafter referred to as (forced flash mode)) and a mode that does not fire regardless of the brightness of the subject (hereinafter referred to as (forced non-flash mode)) This is the flash mode key.

(16) With one press operation, the program mode can be set to (P mode), the drive mode is set to (single mode), and the flash mode is set to (automatic flash mode).
, respectively, are the system reset keys.

(Db) is the four operation keys (13) and (14).
),' (15,).

(16) This is the body display section of the display device made of liquid crystal that displays the operating state switched by the operation, the film count number, etc. (17) is lens mount) (LA
) is used to remove the photographic lens (9) attached to the lens mount (IA), and (la) is used to exchange signals between the photographic lens (9) and the photographic lens (9) when the photographic lens (9) is attached to the lens mount (IA). It is a group of contact points for giving and receiving. (19) is a back cover release lever for opening the back cover (IC). Further, although not shown, a mid-rewind switch for rewinding the film midway is provided on the bottom surface of the camera body (1).

FIG. 1 is a block diagram of the internal electric circuit of a camera according to the present invention, and also shows a photographing lens (9) and a flash device (7).

(BC) is a CPU (hereinafter abbreviated as body CPU) provided in the camera body (1) for controlling the camera operation, and is a CPU for controlling the camera operation such as each device in the camera body (1) and the flash device (7). Control the entire operation. That is, the body CPU (BC) performs a photometry operation, a release operation, a flash emission operation, an operation for exchanging data with the flash device (7) and the photographing lens (9), and the like.

(FLC) is a CPU for flash operation control (hereinafter referred to as
A control circuit on the flash device (7) side whose main component is a flash CPU (abbreviated as “Fish CPU”)
control the behavior of (LEC) is an internal lens circuit provided in the photographic lens (9), and stores various lens information (open F value, focal length, etc.) specific to the photographic lens (9).

In the camera body (1), (LMC) is a photometry circuit that measures light using the output signals from the three light receiving elements (SS), (SA), and (SF), and the body CPU (
BC) output capo) (P22) photometry control signal [
LMEN], the photometry operation is performed with the photometry control signal [LMEN] at the "L" level. Then, the first light receiving element (SS) photometers a spot area (ps) at the center of the photographing area (FF) shown in FIG. The second light-receiving element (SA) has a peripheral area (
P,) is photometered. During flash photography using the flash device (7), the photometry circuit (L!JC) measures the amount of flash light using the output signal from the third light receiving element (SF) that receives reflected light from the film surface. When the amount of light reaches a predetermined amount, a light emission stop signal [STP] is output to the flash device (7).

(DSP) is a display circuit that displays various shooting information using the body display section (Db) and the finder display section (Of) in the viewfinder, and (DX) is a display circuit that displays various shooting information using the body display section (Db) and the finder display section (Of) in the finder. (60) is the output capo of the body CPU (BC) (p2s),
The buzzer (BZ) responds to the sound control signal from the (pig).
), the buzzer drive circuit (εNC) sends a pulse signal to the body CPU in conjunction with the opening and closing of the aperture (not shown).
(BC) is an input capo) Aperture encoder outputs to (CNT), (FMO) is a film winding motor that winds and rewinds the film, (RM) is used to start narrowing down the aperture and raising the mirror. (AM) is the aperture magnet for stopping the operation of the aperture, (1cM) is the first shutter magnet for running the front curtain of the focal plane shutter, (2cM)
) is the second shutter magnet for driving the rear curtain of the focal brain shutter), (DDC) is the second shutter magnet for running the rear curtain of the focal brain shutter, and (DDC) is the data bus (CDB) of the body CPU (DC). upper motor (FMO), release magnet (RM), aperture magnet (AM), two shutter magnets) (1c
This is a decoder driver that drives M) and (2cM).

Next, the display by the display circuit (DSP) will be explained separately into a body display section (Db) shown in FIG. 6 and a finder display section (Of) shown in FIG. 7.

In the body display section (Db), (^εD) is a program mode display block, and in the case of (P mode), (6
If only the display of 10) is (P, mode), then (61
When the display 0) and the display (611) are in (PL mode), the display (610) and the display (612) are respectively displayed. (DRD) is a drive mode display block, and in the case of (continuous mode), (6
If the display of 21) is (single mode), (62
If the display in 2) is (self mode), then (
623) are displayed respectively. (FLD) is a flash mode display block, (automatic flash mode)
In the case of , the display of (630) and the display of (631) are
In the case of (forced light emission mode), only the display (631) is displayed, and in the case of (forced non-light emission mode), only the display (632) is displayed. In addition, a flash device (7
) is installed, a flash mark (633) will be displayed. (FID) is a film information display block in which a film loading mark (641) is displayed when a film is loaded in a cartridge chamber (not shown), and the number of frames is displayed by a film counter (642).

In the viewfinder display <Of), (651) is a camera shake warning mark, and (652) is a no camera shake mark, which indicates the possibility of camera shake depending on the set shutter speed and focal length of the photographing lens (9), etc. The presence or absence is determined, and depending on the determination result, either a hand shake warning mark (651) or a no hand shake mark (652) is displayed. (653) is a charging completion mark, which is displayed when the flash device W (7) is fully charged.

(654) is a flash photography mark indicating that flash photography using flash light from the flash device (7) is in progress.

The switches, which are opened and closed in conjunction with buttons and keys provided on each part of the camera, have one end grounded and the other end pulled up inside the body CPU (DC). A status signal is manually input to the body CPU (BC).

(pws) is a start switch that opens and closes in conjunction with the slide of the main switch (12) provided on the top surface of the camera body (1), and (BC3) is a start switch that opens and closes in conjunction with the opening and closing of the back cover (IC). This is a back cover switch that is in a closed state when (IC) is closed. And both those switches (
The status signals of body CPU (BC) and human powered boat (PI3) of body CPU (BC), respectively.

(p+,) is manually applied. In addition, both of these switches (IIVs) and (BC3) are connected to separate pulse generators (PG, ) and (PG2) that output "L" level pulse signals when the state of the switch changes,
Those two pulse generators (PG, ), (PG
2) (AN) where the output pulse from
, ) is input to the priority interrupt port (Tfr) of the body CPU (BC).

(Sl) is a photometry switch that is closed by pressing the first step of the release button (11), and the photometry operation is started by closing this photometry switch (Sl). (S2) is a release switch that is closed by a second press operation subsequent to the first press operation on the release button (11), and the release operation is started by closing this release switch (S2). Ru.

(AES) is a program mode switch that is closed in conjunction with the pressing operation on the program mode key (13), and each time this program mode switch (AES) is closed, the program mode changes to the three modes mentioned above. can be switched sequentially.

(DR3) is a drive mode switch that is closed in conjunction with the pressing operation on the drive mode key (14), and each time this drive mode switch (DR3) is closed, the drive mode changes to one of the three modes described above. can be switched sequentially. (FLS) is a flash mode switch that is closed in conjunction with the pressing operation on the flash mode key (15), and each time this flash mode switch (FLS) is closed, the flash mode changes to the three modes mentioned above. can be switched sequentially. (SR3)
is a system reset switch that is closed in conjunction with a pressing operation on the system reset key (16).

And the six switches (SL) mentioned above, (S2)
.

(AES), (DR3), (FLS), (SR3
The state signals of ) are individually input to the six input ports (po) to (P, O) of the body CPU (BC), and are also input to the AND gate (AN, ). The output of this AND gate (AN,) is
The start switch (PWS) is input to a buffer (BFO) that becomes active when it is open, and the output of this buffer (OF.) is sent to the body CPU (200).
In other words, when the activation switch (PWS) is in the open state, the six switches (St) are input manually.

(S2), (AES), (DR3), (FLS)
, (SR3) is closed, the body C
It is configured such that an interrupt occurs on P U (BC).

(S3) is an exposure completion switch (F
IS) is a film detection switch that is closed when the film ejected from the cartridge is in the film feeding path to the spool chamber, and (FLS) is a film detection switch that is closed as the film is fed. This is a film count switch that opens and closes in conjunction with a sprocket (not shown) that acts as a film count switch.
.

(FLS) status signals are respectively body CPU (
Each of the three input ports (PI3) to (P2.) of BC) is manually operated.

(Sx) is an X contact, which is mechanically closed when the front curtain of the focal plane shutter completes travel, and the information is used to control the flash dimming operation with the control circuit (FLC) of the flash device (7). It is transmitted to the photometric circuit (LM(')).

The output port (φ) of the body CPU (BC) is a clock output port, which sends a clock signal for AD conversion to the photometry circuit (L!, 'Ic) and a clock signal for buzzer sound to the buzzer drive circuit (BD). Outputs .

(SDB) is the control circuit (FL) of the flash device (7).
C) Data is transferred between the lens internal circuit (LBC), photometry circuit (LMC), display circuit (DSP), film information reading circuit (DX) of the photographing lens (9), and the camera body CPU (BC). The data bus (COB) for communication is
Body CPU (BC) to decoder driver (D
This is a drive data bus that transmits drive data to DC.

Figure 5 shows the control circuit (FLC) of the flash device (7).
FIG.

(FC) is a flash CPU that controls charging for flash emission, controls flash emission, and performs serial communication with the body CPU (BC).

(Xe) is a xenon tube for flash emission, (Q
C) is a light emission control circuit that controls the xenon tube (Xe) to emit and stop light emission, (MC) is the main capacitor that stores energy for flash emission, and (BA) is detachably attached to the flash device (7). The power supply battery (DC) is the output capacitor of the flash CPU (FC).
) In response to the boost control signal [PWC] from (Pso), the output voltage of the power supply battery (BA) is boosted while the boost control signal [PWC] is at the "L" level, and the output voltage is increased through the diode (D). A booster circuit (CV) that charges the main capacitor (MC) is a constant voltage source that stabilizes the output of the power supply battery (BA) and supplies it to the flag CPU (PC).

Fludge: LCP U (FC) output capo) (Ps
From s), a charge detection start signal of "L" level is sent to the light emission control circuit (QC) to start a charge voltage detection operation to detect whether the charge voltage of the main capacitor (IJc) is at the light emission level. [CHD] is output. The light emission control circuit (QC) receives this charge detection activation signal [CHD], determines the charging voltage, and sets the charge detection signal [CHC] to "H" level if it is at the light emission level, but when it has not reached the light emission level. If not, set the charging detection signal [CHC] to “L” level and input the flash CPU (FC).
P112). Fludge 5 CPU (FC
) receives the charge detection signal [CHC] at the "H'" level, outputs a control signal from the output port (ES2) via the buffer (OF, ), and lights up the light emitting diode (LD) to indicate the completion of charging. let

In addition, the output port (P
G, ), the xenon tube (
A light emission enable/disable signal [FEN
] is output. This light emission enable/disable signal [FEN] is input to two AND gates (AN2) and (AN3). One of these two anime games) (AN2) and (AN3) has an X on the camera body (1).
The status signal [SSX] of the contact (Sx) is input, and the other (
AN3) has the photometering circuit (LλIC) of the camera body (1).
) is inputted with a light emission stop signal [STP]. And those two AND gates (8N
2) The outputs of (AN3) are input to separate pulse generators (PG, ) and (PG4), respectively, and the outputs of these two pulse generators (PG3) and (PG4) are input to the light emission control circuit (QC). It is now entered into In other words, the camera body (1
) for starting light emission and stopping light emission [
SSX] and [STP] are input to a light emission control circuit (QC).

In this flash device (7), the light emitting unit (7A) containing the xenon tube (Xe) has a light emitting position protruding from the flash body (7B) and a flash body (7B), as shown in FIGS. 2 and 3. 7B), and is configured to be able to move in and out of the housing position. In Fig. 5, (FUD) is a lifting motor for raising and lowering the light emitting unit (7A), (M[]) is a fludge, and CP
U (FC) out capo) (ES4).

(Psg) and receives a control signal from the lifting motor (
This is a motor drive circuit that controls the forward and reverse rotation of the FIID. Further, (ES,) is a light emitting position detection switch (εS2) that is in a closed state when the light emitting part (7A) is in the light emitting position.
is a storage position detection switch that is closed when the light emitting part (7A) is in the storage position, and the status signals of the pair of position detection switches (ES, ) and (ES2) are the flag 5 CPU (FC). 2 input boards) (P5.
) and (P6°) are manually operated separately.

Flash CPU (FC) person capo) (Tflτ
) is a chip select port to which a serial communication start signal from the body CPU (BC) is input, and serial communication is started by interrupting this person's capo (TV-). (SCK) is the serial clock input port for serial communication, (SIN) is the body CP
Serial data input port from U (BC), (SO
OT) is a serial data input port to the body CPU (BC).

And the above four input/output ports) (TV!-).

(SCK), (SIN), (SO[JT) are connected to separate contacts (CC3F), (C3CK), (C
SIN), (C3OUT), and the two contacts (C3SX) and (C3TP) to which the control signals [SSX] and [STP] for light emission control are transmitted, are connected to the foot part (7C) of the flash device (7). It is set in.

Next, the body CPU (BC) and flash CPU (
FC) will be explained based on the flowcharts shown in FIGS. 8 to 29. Before explaining the operation,
Body CPU (BC) and Flash CPU (F
The contents of serial data exchanged in serial communication with C) and the contents of data in various registers will be summarized.

From flash CPU (FC) to body CPU (
BC) serial data [ICPF] and body CP
The serial data [ICPB] from U (BC) to flag 5 CPU (FC) is composed of 4 bits. The meanings of each bit cbol] to [b, ] of both data [rCPF, [ICPB] are shown in Table 1 on the next page.

Table 1 [A1. IR] is a program mode register that stores a program mode, [DMR] is a drive mode register that stores a drive mode, and [FMR] is a flash mode register that stores a flash mode, all of which are composed of 4 bits. Each register [AMR],
[DMR Ko, [F! The meaning of the data in [JR] is as shown in Table 2 on the next page.

Table 2 [FCR,] is a film feed amount count register for detecting the film feed amount, a notch is set to a value corresponding to a predetermined film feed amount, and a film count switch ( FCS) is configured to be decremented in response to opening/closing of the FCS. [F
CR] is a film counter register for detecting the number of film frames, and is configured to be incremented in response to the exposure completion switch (S3) being released when winding for one frame of film is completed. There is.

[DSR,] and [mouth SR,] are body display parts (mouth b
) is a body display register (hereinafter referred to as a body display register [DSR,] and a body display second register [DSR, ]) that stores display contents by [DS
R2] is a finder display register that stores the contents displayed by the finder display section (Of). Each of the above registers [DSRo], [DSR,].

[DSR2] is composed of 8 bits.

Each register [DSR, ko, [DSR1], [DS
R2] The meanings of [bo] to [btl] are shown in Table 3 on the next page.

Table 3 FIG. 8 shows a priority hard interrupt routine (NMI) that is activated by a priority hard interrupt to the priority interrupt port α of the body CPU (BC) described above.

When a priority hard interrupt occurs, the system clock signal [
To output Φ #2>, the buzzer (BZ) sounds only while the self-timer is operating and after the self-timer stops operating.
#4.6>, if the M output operation, film winding, or film rewinding is in progress, return to the step where the priority hard interrupt occurred (e8.10.12>. Otherwise, Start switch (PIVS) and back cover switch (B
Determine the change in status with C3) #14.18.24
>, and depending on the result, if the start switch (PWS) is opened, after calling the operation stop routine (PW OFF><#16), the execution of the flow is finished and the start switch (PWS) is closed. If it is, after calling the startup routine <PM ON><$20>, enable a manual hard interrupt with a signal to the interrupt port σ) and finish the execution of the <#22>flow; Back cover switch (B
C3) is opened and the back cover switch (BC
3) is closed, the camera back opening routine <RC[lP) and the camera back closing routine (RCCL) are executed, respectively.
After calling <#26.28>, in either case, a hard interrupt is enabled by a signal input to the interrupt baud (TFI"), and the execution of the <130> flow is ended.

FIG. 9 shows a hard interrupt routine <
INT).

When a hard interrupt occurs, the system clock signal [Φ850>, photometry switch (Sl), drive mode switch (DRS), program mode switch (AES), and flash mode switch (PLS) are output.
Please determine the status of each switch #52.56゜60.6
4>, Depending on the result, if the photometry switch (Sl) is in the closed state, call the photometry start routine (Sl), and if the drive mode switch (DRS) is in the closed state, call the drive mode routine. (Call [lRM) $58), program mode switch (AE
If S) is in the closed state, the program mote routine <A
EM> is to be called R62>, the flash mode switch (FLS) is in the closed state and the AREHA flash mode routine (FLM) is to be called R66>, each of the above switches (Sl), (DR3).

If both (AES) and (FLS) are in the open state, that is, if the system reset switch (SR3) is in the closed state, the system reset routine (SRM) should be called.R68> After returning from each of these routines , after stopping the output of the system clock signal [Φ<R70>, the execution of the flow is stopped.

FIG. 10 shows the operation stop routine <FW OFF>.

When this routine is called, the photometry operation will be stopped.
100>, Set data to turn off displays other than the film information display block (FID) R102>,
After setting the serial data [ICPB] to "0" indicating that the light emission is disabled/starting switch (PWS) OFF and transmitting it to the flash CPU (FC) (<1104), it is displayed (R106) and <R108 >, after stopping the output of the system clock signal [Φ] <R110
> , return to the original routine.

FIG. 11 shows the startup routine (PW ON>).

When this routine is called, the program mode, drive mode, and flash mode are returned to their initial states <R150>, and the serial data [ICPB]
When the flash is disabled, (forced flash mode), and the start switch (P
WS) After setting “0011” indicating ON (R1
52>, performs serial communication with the flash CPU (FC) <R154>, and if the flash device (7) is installed, displays the flash mode display block (FID).
) is set to turn on the display; on the other hand, if the flash device (7) is not installed, display data is set to turn off the display of the flash mode display block (FI[l) <#156.158. 160>
. Then the program mode display block (AED)
After setting the display data of and drive mode display block (DRD) <R162> to output the display data 8164> and stopping the output of the system clock signal [Φ] <R166>, the process returns to the original routine.

FIG. 12 shows the back cover opening routine (RCOP).

When this routine is called, the photometry operation will be stopped.
200>, after setting data to turn off the display of the finder display section (Df) and film information display block (FID), <Jt202>, set "00 (o)" to the film count register (FCR). <8204>. Then, the initial winding of the film (described later)
After stopping the sounding of the failure warning buzzer (BZ) (hereinafter referred to as initial load) <tt206>, depending on the state of the start switch (PWS) (R208>), if it is in the open state, the start routine (PW ON> Jump to 8210>, and if it is in the open state, the operation stop routine (
Jump to PW 0FF) <R220>.

FIG. 13 shows the back cover closing routine (RCCL).

When this routine is called, the photometry operation will be stopped.
220>, the presence or absence of film is determined based on the state of the film detection switch (FIS), and if there is no film, the film information display block (FID) is displayed.
Please set the display data to turn off the display of R230.
>, depending on the state of the start switch (PWS) (R23
2>, if it is in the open state, the startup routine (Pill [
If it is in the open state, jump to the operation stop routine (PW OFF>).
36>.

On the other hand, if there is film, the film loading mark (641
) should be displayed only #240.242.244>, the initial load value corresponding to the film feed amount required for the initial load. Start feeding (R248>.

Then, the timer for film advance control is reset and started, and each time the film count switch (FC3) is opened or closed, the film advance amount count register [FC3] is started.
Ro ] is decremented and the register [FCRo
Continue to feed the film until ] becomes “0”.
#250-262>, When the initial load is completed, stop feeding the film and set 01(II)''' in the film counter register.#266
>, depending on the state of the startup switch (FMS) <#26
8>, if it is in the open state, the startup routine (PW ON>
Jump to #270>, and if it is open, jump to the operation stop routine <pw mouth FF><8272>
.

On the other hand, if there is no change in the film count switch (FC3) while the film is being fed until the timer for film feed control times up, it will be determined that the initial loading has failed and the film will not be fed. #
2T4>, the film loading mark (641) is displayed blinking (8276, 278>, and the buzzer (BZ)
After sounding (#280>, displaying a warning that the initial load has failed, and stopping the output of the system clock signal [Φ] (Jt282>), the execution of the flow ends.

FIG. 14 shows the photometry startup routine (Sl).

When this routine is called, the photometry operation will start.
300>, after resetting both the backlight flag [RLF], which is set to "1" in a backlit state, and the hand shake flag [LLF], which is set to "1" in a state where there is a possibility of camera shake (#302 >, proceed to the photometry routine (AE).

When entering the photometry routine (AH), the lens circuit (LEC)
Enter the lens data from #304>, and set 61', which indicates ON of the start switch (PWS), to the [bo] bit of the serial data [ICPB] $306
>, followed by <$310.3 depending on flash mode
12>, serial data [ICPB] [b2゜b+
], set “10” for (automatic flash mode),
Set “01” for (forced flash mode) and “00” for (forced non-flash mode) (#31
4.316.318>. After that, in the case of (automatic flash mode), the backlight flag [RLF] and the hand shake flag [LLF] are set.
Based on the determination result of
Set the bit in [3] to “0” to indicate that light emission is disabled.#
324>, otherwise the serial data [IC
The bit [b3] of “PB-” is “1” indicating that light emission is possible.
After setting <$326>, Fludge 5 CPU
Perform serial communication with (FC)<#330>.

After that, film sensitivity data [Sv] and photometric data [B
After correcting the photometric data <$338>, the photometric data obtained from the peripheral area (P^) (hereinafter referred to as peripheral photometric data) [
Photometric data obtained from evAl and the spot area (P,) (hereinafter referred to as spot photometric data) [Bvs]
By comparing the deviation [Δ8] with the set value [L], it is determined whether the shooting light is backlit or frontlit ($340.342>
.

In the case of backlight where the deviation [ΔB] is larger than the set value [L], the backlight flag [RLF] is set to #35.
0>, <835 depending on the determination result of whether the flash device (7) is attached or not and whether it is in (forced non-flash mode).
2.354>, if the flash device (7) is installed (not in forced non-flash mode), call the calculation routine for flash photography in backlight (fludge, I) #356>, otherwise After calling the arithmetic routine for shooting with constant light during backlighting (constant light I), <#3
58>, in either case, reset the hand gesture flag [LLF] and proceed to steps <#360> and <#400>.

(#342), the photometric data deviation [ΔB] is set to the predetermined value [L
] In the case of the following front lighting, the backlight flag [RLF] should be reset 1370>, and the peripheral photometry data [BvA'
] and spot photometry data [B7. Calculate the average photometric data [BvC from <#372>.

This average calculation is performed on the double-sided optical data [evAl.

[By-s] is weighted and averaged.

Then, from the focal length data [f] of the photographing lens (9) obtained from the lens internal circuit (LEC), the camera shake exposure time data [TvH] which is the limit at which camera shake occurs is determined.
>, After calculating the exposure time data [Tv,] using the average photometry data [Bvc], film sensitivity data [SV], and open aperture value data [AV,], <1376>,
This exposure time data [Tvco] and hand wave exposure time data [T
VII] <1378>.

Exposure time data [TV] is hand shake exposure time data [T,,
], and there is a high possibility of camera shake occurring, set the camera shake flag [LLF] to #380>
<8382.3 depending on the determination result of whether the flash device (7) is attached or not (forced non-flash mode)
84>, if the flash device (7) is installed (not in forced non-flash mode), the calculation routine for flash photography in front light and low brightness (call flash n>#386>, and other In this case, after calling the arithmetic routine for steady light photography in front light and low brightness (constant light ■), the process advances to steps <#388> and <#400>.

In addition, the exposure time data [Tv] is the hand shake exposure time data [
If the camera shake flag is larger than [T-u] and the possibility of camera shake is small, reset the camera shake flag [LLF] #3
90>, depending on the determination result of whether the flash device (7) is attached or not and whether it is in (forced flash mode) <#39
2,394>, If the flash device (7) is attached (not in forced flash mode), call routine (flash ■) for flash photography in front light and high brightness #396), In other cases, after calling the arithmetic routine for steady light photography in front light and high brightness (constant light ■), the process proceeds to steps <#398> and ($400).

In the step <$400>, it is determined whether any of the above calculation routines for flash photography has been called, and depending on the result, [ba] of the serial data [ICPB] is
If flash photography is to be performed, set the bit to "1" to indicate the light emitting unit 8402>, and if flash photography is not to be performed, set the bit to "0" to indicate that light emission is not possible.<#404>, flash CP Perform serial communication with U (FC) <tE1106).

Next, if you want to take pictures with a flash, install the flash device (
When the charging potential of the main capacitor (MC) in 7) is at the light emission level (hereinafter, this state of the flash device (7) is referred to as the fully charged state of the flash device (7); otherwise, the flash device (7) is referred to as an unfilled state), the full state should be displayed, and in other cases, the full state should be turned off. After setting the respective display data, output the display data. Do<1408~4
16〉.

Thereafter, in the case of constant light photography and when performing flash photography, the state of the release switch (S2) is determined when the light emitting part (7A) of the flash device (7) is in the light emitting position.018-422> Release switch (S2
) is in the closed state, the display on the viewfinder display section (Of) is turned off <8450°452>, and then the process proceeds to the exposure control routine (RεL). In addition, the release switch (S2
) is open, the process advances to step <1430>.

On the other hand, when performing flash photography, a flash device (7
) if the light emitting part (7A) is not yet in the light emitting position, after prohibiting the activation of the release operation
>, proceed to step <tt430>. <#430>
In the step, the state of the photometry switch (Sl) is determined,
If the photometry switch (Sl) is in the open state <$304>
Jump to the following photometry routine <AE>#440
>, if the photometry switch (Sl) is open, turn off the viewfinder display (D") #432.434
>, after enabling the hard interrupt by interrupt port (r'b <$436>), returns to the original routine.

Figure 15 shows the calculation routine for flash photography during backlighting (
Fludge, 1).

When this routine is called, the finder display area (O
f) The flash photography mark (654) lights up, and the hand shake warning mark (651) and no hand shake mark (6
52) Set the display data to turn off the light.#
500.502>, exposure data [B
v] is determined <#504>, and then the focal length data [
Obtain hand wave exposure time data [Tvolko from fl<#
506>. Then, only when the hand wave exposure time data [TvH] is larger than the flash synchronization exposure time data [T,,], the hand wave exposure time data [Tv11] is flashed.
Synchronized exposure time data [TV,] 1t508.51
0>, since the flash light is used together, use the flash synchronization exposure time data [Tvx] to find the aperture value data [AV] where the ambient light is 1 point over the exposure data [By] (#512>, this Aperture value data [A
Compare V] with open aperture data [AV0<$51
4>.

The obtained aperture value data [AV] is the open aperture value data [
AVo], the open aperture value data [AV,
] to find the exposure time data [T, ]<#516)
, only when the exposure time data ['rv] is smaller than the hand wave exposure time data [Tv, ], the hand wave exposure time data [Tvll] is bound to the exposure time data [Tv]<151
8.520>, open aperture value data [A,. <8522> where <8522> is set as aperture value data [AV].

On the other hand, the aperture value data [AV] obtained in (#512>
is larger than the open aperture data [AVo],
The aperture value data [AV] is the maximum aperture value data [AvM
] Maximum aperture value data [AV, ]
Bind the aperture value data [AV] <#524.526>,
Let flash synchronization exposure time data [TvX] be exposure time data [T,] (8528>).

In other words, in the flow from step #504>, within the limited range between the open aperture and the maximum aperture, use the ambient light around the main subject to determine the aperture that is 1 point over. However, the shutter speed is determined from the aperture within a limited range between the shutter speed at the flash synchronization limit and the shutter speed at the camera shake limit.

After that, calculate the shortfall [α1] of the subject brightness [Bvs] by the control value determined by the surrounding photometry data <#5
30), use the conversion table to convert it to a correction value [∆〉 #532>, add the film sensitivity data [Sv〉, and set it to the set light control amount [QD] during light control operation ($5
34>, return to the original routine.

FIG. 16 shows a calculation routine for shooting with constant light during backlighting (stationary light I).

When this routine is called, set the display data to flash the flash photography mark (654) to display a warning that flash photography is necessary.$540
>, focal length data [fl to hand shake exposure time data [
Find Tvol<#542>, spot photometry data [B
V, ] and film sensitivity data [Sv] to find exposure data [By ]<#544>, and use this exposure data [ll! Exposure time data [TV] is obtained by subtracting the open aperture value data [AvO] from v<1546>. Then, this exposure time data [TV] is converted into hand shake exposure time data [TV].
'rv, ] and there is a high possibility of hand shake, the display data is changed to turn on the hand shake warning mark (651) and turn off the no hand shake mark (652')) L < $548 .550,552>, Exposure time data [TV] is larger than hand shake exposure time data [TvH] If the possibility of hand shake is small, the hand shake warning mark (651) is turned off and the no hand shake mark is displayed. (65
2) Set the display data to light up <#548
．． 554.556>. Thereafter, in either case, after calling an exposure calculation routine (program calculation) that performs exposure calculation for each program mode <#558>, the process returns to the original routine.

FIG. 17 shows a calculation routine for flash photography (flash ■) in front light and low brightness (in the case of normal flash photography).

When this routine is called, display data should be set to light up the flash photography mark (654).
60>, maximum aperture value data EAvoco and flash second aperture value data [AVC] for flash photography (for example,
Compare “4”) which corresponds to “F4” #562)
, if the open aperture data [Avo] is larger than the 7 digit aperture data [AVC], the open aperture data [Av,
], and the open aperture value data [A,. If A is less than or equal to the flash aperture value data [AVC], each of the flash aperture value data [A-c] is set as the aperture value data [AV] <4564.566>. After that, change the flash synchronization exposure time data [Tv,] to the exposure time data [Tv code #568>, and set the display data to turn off both the hand shake warning mark (651) and the no hand shake mark (652). #570>, film sensitivity data [S
v] is set to the set light control amount [Q], <#572>, and returns to the original routine.

FIG. 18 shows a calculation routine for shooting under constant light (constant light ①) in front light and low brightness.

When this routine is called, the display data should be set to flash the flash photography mark (654) to issue a flash warning #580>, and then the hand shake warning mark (651) will light up and the no hand shake mark will be displayed. (65
2) Set the display data to turn off the light 1582>
, after calling the N-output calculation routine (program calculation) <#584>, returns to the original routine.

FIG. 19 shows a calculation routine for flash photography (flash ■) in front light and high brightness.

When this routine is called, it lights up the flash photography mark (654) and also lights up the hand shake warning mark (651).
) and the no hand shake mark (652) should be turned off. (#594) Due to the use of flash light, use the flash synchronization exposure time data [TvX] to set the aperture value data [AV] such that the average light is one step under (that is, half the light amount) with the exposure data [8v]. Find <#596> and use this aperture value data [
AV] and open aperture value data [AV. ] Compare with <#5
98>.

The obtained aperture value data [AV] is the open aperture value data [
A, , ], open aperture data [AV,
11] to find the exposure time data [Tv]<#60
0>, only when the exposure time data [Tvco] is smaller than the handshake exposure time data [TvII], set the hand shake exposure time data [TvII] as the exposure time data [Tvco] #6
02.604>, open aperture value data [A,. ] is the aperture value data [A, C<#606>.

On the other hand, the aperture value data [AV] obtained by <8596)
is the open aperture value data [AV. If it is larger than
The aperture value data [AV] is the maximum aperture value data [AV+
4], the maximum aperture value data [Av,
l] to aperture value data [AV] <8608.610>
, set the flash synchronization exposure time data ['rvx] to the exposure time data [TV] <#612>.

In other words, as in the previous case (Flat 3I), <$5
In the flow after step 94>, the weighted average light of the spot area (Ps) and the peripheral area (PA) is used to calculate the 1
Determine the aperture that will be one step under, and adjust the shutter speed from the aperture to the shutter speed within a limited range between the shutter speed at the flash sync limit and the shutter speed at the camera shake limit.
It is designed to determine the speed.

After that, because ambient light is used in combination, the film sensitivity data [Sv] is set to "1" so that the light intensity is one step under (that is, half the light intensity) in the same way when flash photography is performed. ” is added to set the set dimming amount [ΩD] <Jt614>, and the process returns to the original routine.

FIG. 20 shows a calculation routine for constant light photography (constant light ■) in front light and high brightness (in the case of normal constant light photography).

When this routine is called, display data should be set to turn off the flash photography mark (654) and hand shake warning mark (651), and to turn on the no hand shake mark (652) #620.622> After calling the exposure calculation routine (program calculation) ($624
> , return to the original routine.

FIG. 21 shows an exposure calculation routine (program calculation) called by the three ambient light photographing calculation routines described above.

When this routine is called, it determines the type of program mode (#700.720), and if it is (9th mode), it proceeds to the flow after step ($702>) and (P
In the case of (L mode), proceed to the flow after step (#722>, and further, in the case of (P mode), proceed to <#75>
Proceed to the flow after step 0>.

(PH mode) is a program mode that gives priority to the fastest shutter speed, and the aperture value is calculated from the exposure data [Ev] and the maximum speed exposure time data [TVM] that were obtained before this routine was called. data[
AV] is determined <#702>, and this aperture value data [AV
] with open aperture data [AVO] <8704
>.

The obtained aperture value data [AV] is the open aperture value data [
＾vo], open aperture value data [Avo
] as aperture value data [AV] #706>, open aperture value data [Avo] and exposure time data [Tv]
<#708> and returns to the original routine.

On the other hand, the aperture value data [AV] obtained in <#702>
is thicker than the maximum aperture value data [Avo], the aperture value data [AV] is larger than the maximum aperture value data [Av
The maximum aperture value data [AVM
] as aperture value data [AV] J$710.712
> After setting the maximum speed exposure time data [TV, I] as exposure time data [T,] <1714>, the process returns to the original routine.

In other words, in (Pg mode), the fastest shutter speed and corresponding aperture are set in the range between the open aperture and the maximum aperture.

Next, in the case of (PL mode), it is a program mode that prioritizes the slowest shutter speed within the range where the possibility of camera shake is small, and the exposure data [B, ] and the camera shake exposure time data ['rvn] to find the aperture value data [A, ] <#T22> and compare this aperture value data [AV] with the open aperture value data [Av, ] <#724) .

The obtained aperture value data [AV] is the open aperture value data [
Avo], the open aperture value data [Av
o] as the aperture value data [AV] #726>, and using the open aperture value data [Avo], the exposure time data [T
V] ($728>, and return to the original routine.

On the other hand, the aperture value data [8v] obtained in <#722>
is larger than the open aperture value data [Avo],
Its aperture value data [AV] and maximum aperture value data [A□]
(8730>.The aperture value data [AV]
is larger than the maximum aperture value data [A□], set the maximum aperture value data [Av, ko as aperture value data [AV] #732>, and expose using the maximum aperture value data [AV, l]. The time data [Tv] is determined <$734>, and the exposure time data [Tv] is the maximum speed exposure time data [TV,
] The maximum speed exposure time data [TV
, after setting ko to exposure time data [Tv]<#736.7
38>, return to the original routine.

Also, the aperture value data [AV] found in <8722>
is less than the maximum aperture value data [AV,], the camera shake exposure time data [TV) I] is set as the exposure time data [Tv], and then the process returns to the original routine (#740).

In other words, in (PL mode), the slowest shutter speed with the least possibility of camera shake and the corresponding aperture are set in the range between the open aperture and the maximum aperture, and when it is brighter than that, the slowest shutter speed and corresponding aperture are set. An aperture and a required shutter speed are set, and when it is dark, an open aperture and a required shutter speed are set.

Finally, in the case of (P mode), it is the normal program mode, and the exposure data [lEv] and the open aperture value data [AVO
] and find the open exposure time data [TVA <417
50>, this open exposure time data [TVA] is compared with the hand shake exposure time data [TvH] (#752>.

If the obtained aperture exposure time data [T, A] is less than or equal to the hand shake exposure time data [TvH], the aperture value data [T, A] is
＾VQ] as aperture value data [AV]8754),
Open aperture data [AV. After converting the open exposure time data [TvA] obtained in <#750> to exposure time data [T,] using <#756>, the process returns to the original routine.

On the other hand, if the obtained open exposure time data ['rvA] is larger than the hand shake exposure time data [TvH, then the slope [T] of the program line is calculated from the focal length data [f] (
#758>, this slope [γ and open exposure time data [T
, A] and the hand shake exposure time data [Tv□] to find the exposure time data [Tvl (#760>), and convert this exposure time data [Tvl to the maximum speed exposure time data [TV, l]
Compare with <#762>.

If the obtained exposure time data [Tvl is less than or equal to the maximum speed exposure time data [T□ko], the exposure time data [Tvl
Find the aperture value data [Avl (8764>
, its aperture value data [AV] and maximum aperture value data [AV
, and I <#766>.

If the aperture value data [A,] is less than or equal to the maximum aperture value data [AVM], the process returns to the original routine.

If the aperture value data [Avl found in <#764> is larger than the maximum aperture value data [Avxl], set the maximum aperture value [Avxl to the aperture value data [Avl] #76
8>, find the exposure time data [Tvl] using the maximum aperture value data [AV,] (#770>, and then convert the exposure time data [Tvl to the maximum speed exposure time data [TvX
Compare with <tt772>.

If the exposure time data [T,] found in <#770> is less than or equal to the maximum speed exposure time data [TV,], the routine returns to the original routine and the exposure time data [Tvl] found in <#770> is returned. is larger than the maximum speed exposure time data [T, .], the maximum speed exposure time data [T-x] is set as the exposure time data [Tvl (#774>), and the process returns to the original routine.

On the other hand, the exposure time data ['r
v ] is larger than the maximum speed exposure time data [Tvx], the maximum speed exposure time data [TVM] is combined with the exposure time data ['rv] (8776>, using the maximum speed exposure time data [TV, 4] Aperture value data [calculate Avl,
The aperture value data [Avl] is the maximum aperture value data [AV,
] Compare with <$780>.

The obtained aperture value data [Avl is the maximum aperture value data [
A, ,], returns to the original routine, and the obtained aperture value data [Avl is the maximum aperture value data [Av,
], the maximum aperture value data [8 VM] is set as the aperture value data [Avl], and the process returns to the original routine <#782>.

In other words, in (P mode), the maximum aperture and corresponding shutter speed are set in the range where there is a high possibility of camera shake occurring at the maximum aperture, and the setting is determined for each focal length in the range where the possibility of camera shake occurring at the maximum aperture is small. The shutter speed is determined based on the program line, and the shutter speed and aperture are set so that the shutter speed does not exceed the maximum shutter speed and the corresponding aperture does not exceed the maximum aperture. It has become so.

The relationship between the shutter speed and the aperture in each of the program modes described above will be explained using the program diagram shown in FIG. 30. The horizontal axis is exposure time data [T,], and the vertical axis is aperture value data [Avl]. And (PLυ〜(PL
The straight line S) is hand shake exposure time data [Tv
The straight line from (p+) to (P,) is a program line set for each focal length. Also, (El)
, (lE2).

The straight line (E,) is the exposure data [
By] is the brightness line.

First, the normal program mode, i.e. (P mode)
The case where is selected will be explained.

Assume that a brightness line (B1) is obtained as a result of photometric calculation. For example, when a photographic lens (9) with a focal length corresponding to the program line (Pl) is attached, exposure time data [T
vA+] is larger than the camera shake exposure time data [Tv old lens] of this photographic lens (9), so the program line (P
The exposure time data ['rv mouth] and the aperture value data [AV, -] at the intersection of the brightness line (El) and the brightness line (El) are obtained, and the exposure time data [Tv■] is the maximum speed exposure time data ['
rvx] and the aperture value data [AV, ,
] is smaller than the maximum aperture value data [^Vll], the exposure is controlled using the exposure time data ['rv, + ] and the aperture value data [Av r + ]. (In the flowchart in Figure 21, <#750>→
<#752> → <tt758> → <#760>
→ <#762) → <#764>→<#7
66> flow. ) Similarly, for the brightness line of (B1>, for example, (P,
) with a focal length that corresponds to the program line (9
) is installed, open aperture data [Avo
Since the exposure time data [TvA,] obtained using l is smaller than the camera shake exposure time data [TvH3] of this photographic lens (9), the open aperture value data [AV,] is replaced with the aperture value data [8, , and its open aperture data [AVO
The exposure time data [TvA, ] at the intersection of the line of ] and the brightness line (B1) is set as the exposure time data [TV],
Exposure will be controlled. (In the flowchart in Figure 21, (#750> → <#752> → <$
754> → <#756>. .

Further, it is assumed that a brightness line (B2) is obtained as a result of photometric calculation. For example, when a photographic lens (9) with a focal length corresponding to the program line (B2) is attached, the exposure time data [TVA2] obtained using the open aperture value data [AvO] will be displayed on the program line diagram. does not appear, but
Hand shake exposure time data for this photographic lens (9) [TVH2
Therefore, the exposure time data [Tv22] at the intersection of the program line (B2) and the brightness line (B2)
Calculate ko and aperture value data [AV2□ko. The exposure time data [Tv22] is the highest speed exposure time data [Tvx]
However, the aperture value data [Av22] is larger than the maximum aperture value data [AVIl], so the maximum aperture value data [Av quality] is set as the aperture value data [AV], and the maximum aperture value data [A, X] Exposure control is performed using the exposure time data [2 in Tv] at the intersection of the line and the brightness line (E, ) as the exposure time data [TV]. (21st
In the flowchart in the figure, <$750> → <#7
52> → (#758> → <#760>
→(#762> → (#'764> → <
#766) → <#768>→<#770>→
This is the flow of <$772>→. For example, if a photographic lens (9) with a focal length corresponding to the program line (P, ) is attached to the brightness line of the same < (82), the program line (B4) and the brightness line (B
The aperture value data [8v24] at the intersection with 2) is smaller than the maximum aperture value data [AVM], but the exposure time data [T
Since the maximum speed exposure time data [TV,] is larger than the maximum speed exposure time data [TV,], the maximum speed exposure time data [TV,l] is set as the exposure time data [Tv], and the maximum speed exposure time data [T-
Exposure is controlled using the aperture value data [8VII+4] at the intersection of the line [x] and the brightness line (B2) as the aperture value data [AV]. (In the flowchart in Figure 21, <#750> → (#752) → <$758>
→ <#760> → <#762> → <
8776> → (The flow is #778> → <#780>.) Furthermore, suppose that a luminance line of (6,) is obtained as a result of the photometric calculation. In this case, which photographic lens (9
) is installed, the maximum aperture value data [exposure time data obtained using Avol [TvA3]
is larger than any of the hand shake exposure time data [TV, I], so the program line (P, ) to (
Exposure time data [Tv] and aperture value data [AV] at the intersection of B5) and the brightness line (B3) are obtained.

For example, if a photographic lens (9) with a focal length corresponding to the program line (B2) is attached, the program (
The exposure time data [Tv, 2] at the intersection of B2) and the brightness line (B3) is smaller than the maximum speed exposure time data [TV, ], but the aperture value data [AV32] is smaller than the maximum aperture value data [8vx ], so the maximum aperture value data “
Let A□ be the aperture value data [AV], and the exposure time data [TvX3] at the intersection of the maximum aperture value data [A,, 1 line and the brightness line (8,) is the maximum speed exposure time data. Since it is larger than [T□], the exposure time data [T,] is set to the highest speed exposure time data [Tv] and the exposure time data [T,] is used as the exposed portion. (In the flowchart in Figure 21,
<#750> → <#752> → <#758> → <#7
60) → <#762> → <#764n →
(#766>→<Jt768) → <#TT
O> → <#772> → (This is the flow of $774>.) For example, if a photographic lens (9) with a focal length that corresponds to the program line (P4) is attached, the program line (P4) The aperture value data [AV34] at the intersection with the brightness line (83) is the maximum aperture value data [AVM
], but since the exposure time data [Tva-] is larger than the maximum speed exposure time data [TV)I], the maximum speed exposure time data ['rv, t1 is set as the exposure time data ['
rv], but its maximum speed exposure time data [TvTh
Since the aperture value data [AvI41] at the intersection of the line I] and the brightness line (B3) is larger than the maximum aperture value data [Avx], the maximum aperture value data [Avx] is set as the aperture value data [AV], Exposure will be controlled. (In the flowchart in Figure 21, <#750) → <$75
2> → (#758> → (#760> → <#
762) → <#776>→<#778>→<
The flow is $780>→<#782>. ) That is, in (P mode), in the range between the open aperture and the maximum aperture, and between the camera shake limit shutter speed and the maximum shutter speed, there are different values depending on the focal length of the photographic lens (9). Program line (Pl) ~ (P,)
In order to satisfy any of the following, in other ranges, either the open aperture value data [Avo] line, the maximum aperture value data [Avv] line, or the maximum speed exposure time data [TV,] The shutter speed and aperture are determined so as to satisfy the following.

Next, a case will be described in which a program mode giving priority to the highest shutter speed, that is, a (PH mode) is selected.

Assume that a brightness line (B1) is obtained as a result of photometric calculation. In this case, the aperture value data [AvM,] at the intersection of the maximum speed exposure time data [TVM] line and this brightness line (El) does not appear on the program diagram, but the maximum aperture value data [AvM, ] does not appear on the program diagram. Since the maximum aperture value data [AV] is smaller than the maximum aperture value [AV]. ] is the aperture value data [Ad, and the open aperture value data [AV0 line and brightness line (
Exposure is controlled using the exposure time data ['rvA,] at the intersection with El) as the exposure time data [Tv]. (In the flowchart in Figure 21, <Jt702>→
The flow is <#704>→<#706>→(#708>). Let us also assume that the luminance line (B2) is obtained as a result of the photometric calculation. In this case, the maximum speed exposure time data [T
VM] line and this brightness line (B2), the aperture value data [Avxzl is the open aperture value data [AV
. Larger than ko, and maximum aperture value data [AV,]
Since it is smaller than , the obtained aperture value data [AvMz
Exposure is controlled using the maximum speed exposure time data [TV, ]. (In the flowchart in Figure 21, <#702>→(#704>→<#710)→<#7
14> flow. ) Furthermore, as a result of photometric calculation, (
Suppose that a brightness line of E, ) is obtained. In this case, since the aperture value data [AV, 3] at the intersection of the line of maximum speed exposure time data [T,,] and this brightness line (B,) is larger than the maximum aperture value data [AVM], the maximum The aperture value data [AvII] is the aperture value data [A,], and the maximum speed exposure time data [TV, I] is the exposure time data [Tv
], the exposure will be controlled.

(In the flowchart in Figure 21, <$702>→(#
704> → <$710) → <$712>
→ This is the flow of <$714>. ) In other words, in (PII mode), the open aperture value data [
Avo ] line or maximum speed exposure time data [T
The shutter speed and aperture are determined so as to satisfy one of the lines V, ].

In this (PH mode), the shutter speed is set to the highest speed within the selectable range, so it is suitable for photographing fast-moving subjects.

Finally, a case will be described in which the program mode that prioritizes the shutter speed at the limit of camera shake, that is, the (PL mode), is selected.

Assume that a luminance line of (E!1) is obtained as a result of photometric calculation. For example, (PLI) hand wave exposure time data [Tvn
] When a photographic lens (9) with a focal length that corresponds to a line of And the largest and largest aperture value data [
Since the aperture value data [AVH, K] and the hand shake exposure time data [TvH] are used for exposure control. (In the flowchart in Figure 21, <#722> → <#724>
This is the flow of → <#730> → <#740>. ) For example, for the luminance line of the same < (E+), (P
L! If a photographic lens (9) with a focal length that corresponds to the hand shake exposure time data [TVH] line in l) is attached,
The aperture value data [AVH3] obtained using the hand shake exposure time data [Tvl(3)] is the open aperture value data [AVO].
Therefore, the open aperture value data [A, VO] is set as the aperture value data [AV], and the open aperture value data [Av
Exposure control is performed using the exposure time data [TvA, ] at the intersection of the line [o] and the brightness line (El) as the exposure time data [TV]. (In the flowchart in Figure 21, (#722> → #724> →
<#726> → (#728> is the flow.) Also, suppose that the luminance line (E2) is obtained as a result of photometric calculation. For example, the hand shake exposure time data of (PL2) [
TV! ] If a photographic lens (9) with a focal length of Therefore, the maximum aperture value data [A
V, ] is set as aperture value data [AV], and the exposure time data [Tvx2] at the intersection of the maximum aperture value data [A
], the exposure will be controlled. (In the flowchart in Figure 21, <#T22> → <#724>
→ <$730>→<$732>→<#734>→(
#736) is the flow. ) Furthermore, it is assumed that a luminance line (E3) is obtained as a result of photometric calculation. No matter which photographic lens (9) is attached, hand shake exposure time data [aperture value data obtained using TvH] [A
V11] is larger than the maximum aperture value data [AV,], so the maximum aperture value data [AVX] is changed to the aperture value data [AV,].
The maximum aperture value data [A,. Since the exposure time data [Tvl] at the intersection of the line and the brightness line (B3) is larger than the maximum speed exposure time data [Tvx], the maximum speed exposure time data [T-M] is changed to the exposure time data [TV The first step is to control exposure. (In the flowchart in Figure 21, <#722>→<#72
4>→<t730>→ (#732> → <$7
34) → (#736> → <#738>
This is the flow. ) In other words, in (PL mode), in the range between the open aperture and the maximum aperture, and between the camera shake limit shutter speed and the maximum shutter speed,
) different hand shake exposure time data according to the focal length [Tv
In other ranges, the open aperture value data [A, ] line, maximum aperture value data [AV)l
] line or maximum speed exposure time data [TV, ]
The shutter speed and aperture are determined so as to satisfy either of the following.

In this (PL mode), the shutter speed is set to the lowest speed within the selectable range that is less likely to cause camera shake, so the aperture is narrowed down accordingly, allowing you to shoot portraits and close-ups. suitable for

Returning to the explanation of the operation using a flowchart, FIG. 22 shows the exposure control routine (REL).

When this routine is called, self processing using the self timer is performed only in the case of (self mode) <sg
oo~808) Then, only when performing flash photography, outputs the set light control amount [QD] for controlling the flash light to the light metering circuit (LMC) (#810.812>
.

After that, store the difference between the aperture value data [Av] set in each routine of exposure calculation and the open aperture value data [AVO] in the counter #814>, and after enabling counter interrupts <#816>, release the camera. magnet)
Activate (RM) to start release operation <$81
8>. This causes the aperture to stop down and the mirror to move up.

Thereafter, the process waits for a predetermined time required for mirror up <8820>. During this time, a counter interrupt (CNTI) occurs due to the aperture narrowing operation.

When this counter interrupt (CNTI) occurs, as shown in FIG. 23, after stopping the narrowing down operation (#950>
, return to the original routine.

<#820) When the time wait is completed and all mirror ups are completed, the front curtain and rear curtain of the focal brain are converted to exposure time data [Tv] set in each exposure calculation routine.
The exposure operation is performed by performing the exposure operation with a time difference based on (#822 to 826).

When the exposure operation is finished, wait for the exposure completion switch (S3) to open <$828>, then rotate the winding motor (FMO) forward to charge the shutter and aperture #830), and then open the exposure completion switch (S3). Waiting for release <1832>.

Here, to explain the outline of the operation of the hoisting motor (FMO), in FIG. 31, the hoisting motor (FMO)
] When the film is reversed at the position CB, it is connected to the drive mechanism for rewinding the film and rewinds the film from the spool into the cartridge, and when it is reversed at the position CB, it is connected to the drive mechanism for rewinding the film. It is configured to pull the film out of the cartridge and wind it onto a spool. Further, it is configured to be connected to a charging drive mechanism to charge the shutter and the diaphragm by rotating in the normal direction in either position (A) or [B], and (A)
When it is in the position [B], it is configured to move to the position [B] while being charged by normal rotation. When the winding motor (FMO) rotates forward by a predetermined amount and charging of the shutter and aperture is completed, the exposure completion switch (S
3) is configured to be open.

Returning to Fig. 22 again to continue the explanation of the operation, when charging is completed and the film detection switch (FIS) determines that there is film, the process proceeds to the film winding routine (W leaf) and the film is loaded. If it is determined that there is no <
Proceed to #900>.

In the film winding routine <wup>, the film counter register [FCR] is incremented) L <t8
36>, after outputting the display data <1838>, after setting the one-frame winding value [M] corresponding to the film feed amount for one frame in the film feed amount count register [FCRO] (1840>, the previous Since the winding motor (FMO) is at the position CB in FIG. 31 at the end of charging, film feeding is started by reversing the winding motor (FMO) (#842).

Then, the timer for film advance control is reset and started, and each time the film count switch (FCS) is opened or closed, the film advance amount count register [,F
CR, ] is decremented and the register [FCRo] is
Continuously feed the film until the value becomes “0”.
846-856>, when one frame winding is completed, the film feeding is stopped and the process proceeds to <8858>, <#900).

On the other hand, while the film is being fed, if there is no change in the film count switch (FCS) before the timer for controlling the film feed times up, it is determined that the film has finished and a bump has occurred, and the rewinding routine is executed. (R1'
Proceed to ll). In the rewind routine (REW), the film feed is stopped and the film advance motor (FMO) is set to blink the film display block (FID) of the body display section (Db). Third
Since it is in position [B] in Figure 1, move it to position (A) and set it to the rewinding state <#866>, then reverse the winding motor (FMO) and start feeding the film. <8
868>.

This starts rewinding the film.

After that, it is determined whether or not the film rewinding is completed based on the state of the film detection switch (FIS) #87
0>, when the film rewinding is completed, stop the film feeding, and then set the film counter register [FCR] to ``''00 (, I).#8
74>, set the display data to make the film display block (FID) blink #876>, since the winding motor (FMO) is in position (A) in Fig. 31, set C.
After moving to position B) and canceling the rewinding state ($87
8>, proceed to <#900>.

(Steps above $900 are required if the exposure operation is performed without film, if the film is wound for one frame after the exposure operation is completed with film present, or if the film is wound in the middle of winding the film. The process progresses to when the film is finished and the film is rewound.Then, if there is a change in the status of the start switch (PWS) and back cover switch (RCS) (#900 to 906>, the start switch (PWS)
If S) is released, the operation stop routine (P!AO
FF) to jump to 990g>, start switch (P
If the WS) is closed, the startup routine (PwON>
Jump to $910>, camera back switch (RC3)
If the switch is opened, jump to the camera back opening routine (RCOP).Jt912>, camera back switch (RC3)
If it is closed, the process jumps to the camera back closing routine (RCCL) (#914>).

After that, determine the drive mode #916.918>
, (continuous mode), press the release switch (S).
2) is in the open state, jump to the photometry routine (A8) #920, 922>, and if the release switch (S2) is in the open state in (continuous mode), (
Go to #930>, and if it is (self mode), return the drive mode register [DMR] to the initial state to cancel it, then go to <8924>(Jt930>,
If (single mode), proceed to (#930) unconditionally.

In <#930>, wait for the photometry switch (Sl) to be opened, and when the photometry switch (Sl) is opened, set the display data of the drive mode display block (DRD) in #932>, and interrupt port σ. <1934>, after enabling hardware interrupts by signal input to (edition), stopping photometry operation #936>, and outputting display data <#93>
8) Return to the original routine.

FIG. 24 shows a drive mode routine (DRM) for changing and setting the drive mode.

When this routine is called, the drive mode register [mouth MR] is incremented by $1000>, and the bits of [b0] and [b, co are determined and <#1002
．． 1004>, [If the boco bit is "0" (single mode), set display data to light up the rsINGLJ display (622) of the drive mode display block (mouth RD) $1006>, [bO
] If the bit of [bl] is “1” and the bit power of [bl] is “0” (continuous mode), set the display data to light up the “C0NTINUO11S” display (621) of the drive mode display block (DRD). Shiku $1
008>, furthermore, [b, co.

Both bits of [bl] are “1” (self mode)
If so, set the display data to light up the timer mark display (623) of the drive mode display block (OR port) #1010> In either case, other program mode display blocks (AED), flash mode display blocks (FLD), After setting the display data to turn off the display of the film information display block (FID) ($1012>, output the display data <#10
14).

After that, wait for the drive mode switch (OR3) to be released (#1016), and if the drive mode switch (OR3) is released, the program mode display block (ADD), flash mode display block (FLD), and film After setting the display data to restore the display of the information display block (PID) <#10
18>, output the display data #1020>, enable hardware interrupts <#1022>, and return to the original routine.

By repeating this routine by repeatedly operating the drive mode key (14), the drive mode changes from (single mode) to (continuous mode) to (single mode) as shown in Table 2 above. ) → (self mode) → (single mode). In other words, the most frequently used drive mode (single mode) is switched every other time, and the other drive modes are sequentially switched.

FIG. 25 shows a program mode routine (ABM>) for changing and setting the program mode.

When this routine is called, the program mode register [AMR] is incremented.
, distinguish the bits of [b, ko and [b, ko] and find <$10
52.1054>, [bo bit is “0” (P
mode), the program mode display block (8ε
Set the display data to light up the rpJ display (610) in D). If so, set the display data to turn on the rpJ display (610) and r-)11GH display (611) in the program mode display block (AED).

If both bits of [b+] are “1” (Pt mode), “P” of program mode display block (AED)
display (610) and r-LOIIJ display (612)
Please set the display data to turn on the 81060>
, in any case, another drive mode display block (D
RD), flash mode display block (FLD),
After setting display data to turn off the display of the film information display block (FID) (#1062>, the display data is output (11064>).

After that, wait for the program mode switch (AES) to be released <#1066>, and if the program mode switch (AES) is released, the drive mode display block (DRD), flash mode display block (FLD), and film Information display block (FID)
After setting the display data to restore the display of <$1
068>, output the display data #1070>, enable hardware interrupts <#1072>, and return to the original routine.

By repeating this routine by repeatedly operating the program mode key (13),
As shown in Table 2 above, the program mode is (
P mode) → (P, mode) → (P mode) → (PL mode) → (P mode). In other words, the most frequently used program mode (P mode) is switched every other time, and the other program modes are sequentially switched.

FIG. 26 shows a flash motor routine (FLM) for changing and setting the flash mode.

When this routine is called, the flash mode register [FMR] is incremented by $1100>,
Distinguish the bits of [b0] and [b,] and <#110
2.1104>, if the [bO] bit is “0” (automatic flash mode), serial data [ICPB] is “0101” indicating that the start switch (PWS) is ON (automatic flash mode). Please set #1106>,
Also, the bit of [bo] is “1” and the bit of [bi is “1”.
0” (forced flash mode), the serial data [I
CPB] (forced flash mode) and turn on the start switch (PI9
Set "0011" to indicate that S) is ON.81108> Furthermore, if the [bo] and [:bl] bits are both "1" (forced non-emission mode), the serial data [ICPB] “00” indicates that the start switch (PWS) is ON in (forced non-emission mode).
01'' should be set #1110>, and in either case, serial communication is performed with the flash CPU (FC) <$1112>.

As a result of serial communication, if the flash device (7) is not installed, the flash mode display block (FL
D) After setting the display data to turn off the light <811
16>, proceed to <#1132). - On the other hand, if the flash device (7) is installed, check the bits [bo] and [b+co] of the flash mode register [FMR].
1118.1120>, [b0] bit is “0” (
81122>, and [bO] If the bit in [b1] is "1" and the bit in [b1] is "0" (forced flash mode), set the display data to turn on the "ON" display (631) of the flash mode display block (FLD). #1124>, and further [boko, [b
+] bits are both “1” (forced non-emission mode), the rO of the flash mode display block (FLD)
Display data to light up the FF J display (632)) L <11126>, in any case other program mode display block (AED), drive mode display block (DRD), film information display block (FID) After setting the display data to turn off the display <#1128>, output the display data and press <#1
130>, proceed to <#1132>.

<#1132> is the flash mode switch (FLS).
) is released, then press the flash mode switch (
FLS) is released, the program mode display block (AED) and drive mode display block (D
RD), after setting the display data to restore the display of the film information display block (FID)<#1134
>, output display data 11136>, and after enabling hardware interrupts <Jtl138>, return to the original routine.

By repeating this routine by repeatedly pressing the flash mode key (15), the flash mode is activated as shown in Table 2 above.
(Automatic flash mode) → (Forced flash mode) → (Automatic flash mode) → (Forced non-flash mode) → (Automatic flash mode)
will be switched sequentially. That is, the most frequently used. (
The flash mode switches to the automatic flash mode every other time, and then switches to the other flash modes sequentially.

As mentioned above, with this camera, switching between the three shooting modes of drive mode, program mode, and flash mode is most frequently used in each shooting mode (single mode) (P mode) (
It is a state in which the camera switches to a specific operating mode of each shooting mode (automatic flash mode) every other time, and then sequentially switches to other operating modes, so it does not matter if it is in any operating mode other than the specific operating mode. However, the drive mode key (14), program mode key (13), or flash mode key (15), which is an operating tool,
) can be switched to a specific operation mode with just one operation, and this can be done independently for each shooting mode, so overall usability of the specific operation mode can be improved in each shooting mode. .

That is, each body CPU (BC) is 3
Three shooting modes: program mode, drive mode, and flash mode can be selected by repeatedly operating the program mode key (13), drive mode key (14), and flash mode key (15), which are one operating tool for each shooting mode. constitutes a mode setting means that can freely switch to a plurality of three or more operation modes, and each of the operation tools (13) to (15) can be switched to a plurality of operation modes in each of the three shooting modes by every other operation of the operating tools (13) to (15). The mode setting means is configured as a continuous hand that switches the mode setting means in one specific operation mode among the operation modes.

FIG. 27 is a system reset routine (SRM) for returning the program mode, drive mode, and flash mode to their respective specific operating modes at the same time.

When this routine is called, the program mode register [AMR], drive mode register [OMR]
, the flash mode register [FMR] is all “0”.
(II)"4tl150>, and after setting the serial data [ICPB] to "0101", which indicates that the start switch (PWS) is ON in (automatic flash mode), <#1152>, flash CPU (
FC) <ttl154>
.

As a result of serial communication, if it is determined that a flash device (7) is installed, rAUTO-J is displayed on the flash mode display block (FLD) (630).
Set display data to turn on the "ON" display (631). If it is determined that the flash device (7) is not installed, set the display data on the flash mode display block (FLD). Display data is set to turn off the light (11160).

Next, rs of the drive mode display block (DRD)
INGL” display (622) lights up, and the program mode display block (＾IED) displays “P” (
610) after setting the display data to light up <#
1162.1164> , output display data (
#1166>.

After that, wait for the system reset switch (SRS) to be released <$1168>, and if the system reset switch (SR3) is released, after allowing the Hyde interrupt (#1170>, return to the original routine. .

FIG. 28 and FIG. 29 both show the flash CPU (
This is a routine for interrupts that occur in FC).

Figure 28 shows the serial communication that occurs when the serial communication start signal from the body CPU (BC) is input to the chip select port C]π) when performing serial communication with the body CPU (BC). Interrupt routine (INT
o>.

In this routine, we first enable serial interrupts <3
1500). This automatically disables timer interrupts depending on the heart configuration. Next, after stopping the boost operation <81502>, set the [bO] bit of the serial data [rCPF] to "1" indicating that the flash is attached #1504), and the light emission control circuit (QC) starts the charge detection operation. After starting <[506], wait until the operation of the light emission control circuit (QC) stabilizes<81508
>.

Subsequently, the charging detection signal [< according to the determination result of COCl
#1510>, if it is in the full state, the serial data [I
After setting the [bl] bit of [CPF] to “1” (
#1512> turns on the light emitting diode (SiD) to indicate the battery is fully charged. 81516) light emitting diode (LD)
Turns off the light to indicate unfilled status <$1518>.

Next, a pair of position detection switches (8S, ), ([B
S2) depending on the state of the light emitting position detection switch (Fis
If h) is in the closed state, serial data [ICPF]
(7) Set bits [b3] and [b2] to “11” 11524>, storage position detection switch (8S2)
If the serial data [ICPF] is open, [b
3] and [b2] should be set to “01” [52]
6>, both position detection switches (ES+), (BS2
) are both open, the serial data [ICPF
], set bits [b3] and [b2 to “00” #1528>, then the body CPU (BC)
Perform serial communication with <#1530>.

As a result of serial communication, if the activation switch (PWS) of the camera body (1) is in the open state <31532>, or if the flash mode is (forced non-flash mode) <#1534>, the storage position Detection switch (B
The position of the light emitting part (7A) is determined based on the state of the light emitting part (7A). The light emitting part (7A) is connected to the flash body 7B
) After lowering the light emitting part (7A) by driving the lifting motor (FUD) until it is accommodated in the (#1538.154
0>, stop driving the lift motor (FtlD)<
81542>. After that, the light emitting diode (LD) is turned off <, #1544>, and the xenon chive (Xe) light emission is prohibited <$1546>, and then execution of the flow is stopped.

On the other hand, as a result of serial communication, if the start switch (PWS) is in the open state <#1532> and the flash mode is (automatic flash mode) or (forced flash mode), <11534> and the flash position detection switch ( The position of the light emitting part (7A) should be determined according to the state of IESυ #155
0>, if the light emitting part (7A) is not in the light emitting position, the light emitting part (7A) is not in the light emitting position until the light emitting position detection switch (BS, ) is closed, that is, until the light emitting part (7A) completely protrudes from the flash body (7B). After driving the lifting motor (FUD) to raise the light emitting part (7A) <#1552.1554>
, lifting percentage (F[I[]) (7) Stop driving.

Next, use the result of serial communication to determine whether or not it is in (automatic flash mode) and whether or not it is possible to emit light #1558
．． #1562
> , otherwise, i.e. (forced flash mode)
Allows xenon chirve (Xe) to emit light in the case of (automatic flash mode) and when it is possible to emit light <#1564>
.

After that, set the predetermined value [TO] in the time count register [CHR] [566> and set the timer to Ut.
After setting and starting <$1568>, enable the timer interrupt (#1570>. Next, start the boost operation <#1572>, and the light emission control circuit (QC)
After starting the charging detection operation by <#1574>,
Wait until the operation of the light emission control circuit (QC) stabilizes.
11576>.

Next, in accordance with the determination result of the charging detection signal [C)IcI, if it is in an uncharged state, the light emitting diode (LD) is turned off to display an uncharged state, and then <15
80>, stop execution of the flow. If the battery is fully charged, the light emitting diode (LD) is turned on to indicate that the battery is fully charged <$1582>, and the boost operation is stopped.
1584>, after stopping the charging detection operation <$158
6>, stop execution of the flow.

That is, as described above, all of the operations of the flash device (7) are controlled by instructions from the body CPU (BC) transmitted through serial communication with the body CPU (BC). The camera is configured to centralize and simplify camera operations including the flash device (7).

No. 291! For example, l is a raw timer interrupt routine (TIM>) every [250 m5].

In this routine, first enable serial interrupt #1.
600>, decrement the time count register [CHR] #1602>, and determine the contents of the time count register [CHR] (#1604
>.

If the time count register [CHR] is 10”, turn off the light emitting diode (LD) <#1606>
, after stopping the charging detection operation and boosting operation ($1608
．． 1610>, stop execution of the flow. That is,
Time count register [C) IR code <$1566
For example, if "20'" is set in step >, if there is no serial communication with the body CPU (BC) for 5 seconds, the flash device (7)
is configured to stop the operation of the

On the other hand, while the time count register [CHR] does not become "0", the light emitting diode (LD) is turned on if it is in a fully charged state based on the determination result of the charging detection signal [C) IC]. and displays the fullness <#1614)
, after stopping the charging detection operation and boosting operation <#1616
, 1618>, and if it is in the unfilled state, nothing is done, and after resetting and starting the timer (#162
0>, after enabling timer interrupts ($1622>,
Stop a flow from running.

[Another example]

Next, another example of the present invention will be listed.

<1> In the previous embodiment, an operation mode switching device for switching the shooting mode was explained using a camera as an example. However, the present invention provides a switching device for various modes, which is provided in, for example, an exposure meter, a color meter, etc. These cameras, exposure meters, color meters, etc. are collectively referred to as optical equipment.

2> The number of modes that can be switched freely by the mode setting means is:
There is no problem as long as there are three or more.

3) In the previous embodiment, an example was explained in which the camera's shooting modes, such as the program mode, drive mode, and flash mode, were set as the mode setting means.
In addition to this, or instead of that, the mode setting means can set various modes. Next, some examples are listed.

(3-1> Exposure mode in camera.

In addition to the program mode (hereinafter referred to as (P mode)) described in the previous embodiment, the exposure modes include aperture priority mode (hereinafter referred to as (A mode)) in which only the aperture is manually changed and set by the photographer. ), shutter speed priority mode (hereinafter referred to as S mode) in which the photographer manually changes only the shutter speed, and manual mode (hereinafter referred to as S mode) in which the photographer manually changes and sets both the aperture and shutter speed. (referred to as M mode).

Among the four exposure modes mentioned above, (P mode), which is considered to be used most frequently, is set as the specific operation mode, and the exposure mode switching is as follows: (P mode) → (A mode) → (P mode)
mode) → (S mode) → (P mode) → (M mode)
→ (P mode).

<3-2> Focus adjustment mode in camera.

The focus adjustment modes include a one-shot autofocus mode (hereinafter referred to as (OAF mode)) that automatically performs focus adjustment and maintains the focused state once it is in focus; Continuous autofocus mode (hereinafter referred to as (CAF mode)) in which the focus adjustment operation continues depending on the condition of the subject even after it is in focus, and a manual in which the focus adjustment operation is performed manually. Focus mode (
There is a mode (hereinafter referred to as MF mode).

Of the three focus adjustment modes mentioned above, (OAF mode), which is thought to be used most frequently, is set as the specific operation mode, and the focus adjustment mode is switched from (OAF mode) to (C
AF mode) → (OAF mode) → (MF mode) → (
OAF mode).

<3-3> Shooting mode in still video camera.

The shooting mode of a still video camera is called frame sound mode (hereinafter referred to as (FS mode)), which uses three tracks, records frame images on two of them, and records sound on the remaining one track. ), a frame mode that uses two tracks and records frame images on them (hereinafter referred to as (FL mode)
), field mode (hereinafter referred to as (Fl)), which uses only one track and records the field image on it
There is a mode called ).

Of the three shooting modes mentioned above, (FS mode), which is considered to be used most frequently, is set as the specific operation mode, and the shooting mode can be switched from (FS mode) → (FL mode) →
It is configured to switch in the order of (FS mode) → (FI mode) → (FS mode).

<3-4> Photometry mode in I subtotal.

The light metering modes of the exposure meter include the ambient light mode (hereinafter referred to as AMBI mode) which measures only ambient light, and the synchro flash mode (which measures only flash light or flash light and ambient light using a synchronization code). (hereinafter referred to as (CORD mode)), non-synchronized flash mode (hereinafter referred to as <N
There is a mode called 0N-CORD mode).

Among the three measurement modes mentioned above, <AMB I mode), which is considered to be used most frequently, is set as the specific operation mode, and the photometry mode is switched from <AMB I mode) → (C
ORD mode) → (AMBI mode) → (NON-CO
RD mode)→(AMBI mode).

4) In the previous embodiments and the embodiments of <3-1> or 3-4> described above, which of the three or more plurality of operation modes that can be freely switched by the mode setting means is specified. The operating mode can be changed as appropriate. In addition, at the initial stage of use, among these multiple operating modes,
Depending on the needs of the user, the device may be configured so that normal use can be performed after specifying one of the operating modes as a specific operating mode. Further, an operating means may be provided for appropriately selecting any one of the plurality of operating modes to set it as a specific operating mode.

5) As for the operation method of the operating tool, instead of the push button type mentioned in the previous embodiment, it may be a slide lever type where the operating mode can be switched with each slide operation. The configuration can be changed as appropriate. Furthermore, the operating tool may have a configuration in which the operating mode can be switched bidirectionally by a combination of an up key and a down key, or a mode change permission key and a mode change operation key may be used to prevent erroneous operation. The configuration may be such that the operation mode can be switched by simultaneously performing the operations on the .

〔Effect of the invention〕

As described above, according to the operation mode switching device of the present invention, switching to one frequently used specific operation mode among the plurality of freely switchable operation modes can always be performed with just one operation on the operating tool. Because of this, even if the number of switchable operation modes increases, you can always select a specific operation mode with the same ease and proceed with your work, providing an optical device that is easy to use with frequently used operation modes. I can now do it.

[Brief explanation of the drawing]

The drawings show an embodiment of an operation mode switching device for an optical device according to the present invention, and FIG. 1 is a circuit block diagram of a camera, and FIG. 2 is a circuit block diagram of a camera.
Figure 3 is an overall front view of the camera, Figure 3 is an overall side view of the camera, Figure 4 is a top view of the camera body, Figure 5 is a circuit block diagram of the control circuit for the flash device, and Figure 6 is the body display section. A plan view, Fig. 7 is a field view in the finder, Figs. 8 to 29 are flow charts showing camera operation, Fig. 30 is a program diagram, and Fig. 31 shows charging and film feeding by the winding motor. It is a conceptual diagram.

Claims (1)

[Claims] An operating mode switching device for an optical instrument, comprising a mode setting means that can freely switch between three or more plurality of operating modes, and an operating tool for sequentially switching the mode setting means to the plurality of operating modes each time the mode setting means is operated. The operating mode of the optical device is provided with a linking means for switching the operating mode setting means in a state where every other operation of the operating tool is set to one specific operating mode among the plurality of operating modes. Switching device.