JP3327996B2 - State detection mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state detecting mechanism, and more particularly, to a state detecting mechanism of a driving force transmitting mechanism for driving a plurality of driving systems by using a unit motor.

[0002]

2. Description of the Related Art Hitherto, in a device such as a camera, various driving force switching mechanisms for switching a single driving force to a plurality of driving systems and using the same have been proposed.
Japanese Patent Application Publication No. 648 discloses a driving force switching mechanism that switches the driving force of a single motor to a plurality of transmission mechanisms by forward and reverse rotation operations.

This technical means uses the driving force of the single motor as a driving source for shutter charge, mirror driving, etc. by the forward rotation operation, and the film winding and rewinding operation by the reverse rotation operation. Are switched so as to be used as drive sources for the respective devices.

Japanese Patent Application No. 4-60548 proposes a technical means in which a rotary clutch performs a clutch switching operation by rotation in one direction and drives a non-drive mechanism by rotation in another direction.

On the other hand, Japanese Patent Application No. 3-309336 proposes a drive mechanism that selects a plurality of driven gears using a single motor by combining a sun gear and a planetary gear.

Further, Japanese Patent Application No. 4-26878 proposes a switching mechanism for detecting a reset position from the pulse width of a signal being driven.

[0007]

However, in the technical means disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-287648, since the locking member of the planetary gear is switched by the section switching member, a complicated mechanism is required, and a camera or the like is required. In addition, it is difficult to reduce the size of the device, and the cost is increased. Further, the technical means proposed in the above-mentioned Japanese Patent Application No. 4-60548 is to detect the absolute position of the rotary clutch unit. Is difficult.

On the other hand, in the technical means proposed in Japanese Patent Application No. 3-309336, a series of release operations are performed after selecting a first-stage gear of a drive system for driving an autofocus lens during a release operation. , A release time lag occurs, and the operation feeling is deteriorated.

Further, the technical means proposed in Japanese Patent Application No. 4-26878 does not include an initial position detecting means. Therefore, if the initial position is erroneously recognized due to a malfunction or the like, the operation is continued in this state. There is a possibility that it will end up. Also,
In a stationary state, position detection may be difficult.

The present invention has been made in view of the above problems, and has as its object to solve the above-mentioned problems and to provide a state detecting mechanism capable of reliably detecting a gear position by a single sensor. .

[0011]

In order to achieve the above object, a state detecting mechanism according to the present invention is adapted to a driving force transmitting mechanism.
In a state detection mechanism that detects the state of the driving force transmission mechanism by detecting the position of the moving moving member ,
Yes photoelectric sensor composed of a light receiving element for receiving reflected light or transmitted light from the light emitting element and the movable member for projecting light toward the KiUtsuri moving member, the reflectance or transmittance of at least three levels And the movement of the moving member
Reflectance at the detection point of the photoelectric sensor is also I
Properly the transmittance changes, a detected portion provided on said moving member, and the output of the photodetector compared to determine value,
Determining means for determining the position of the moving member based on the comparison result, and according to the detected position of the moving member,
The determination value of the determination means is set, and the light emitting element
The output level of the light receiving element by changing the current supplied to the
It is characterized in that it is adjusted .

[0012]

[0013]

[0014]

[0015]

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

FIGS. 1 to 6 show a camera to which the state detecting mechanism according to the first embodiment of the present invention is applied. FIG. 1 is a top view of the camera, FIG. 2 is a front view, and FIG. 3 is a bottom view. 4, FIG. 4 is a right side view showing a state in which a strobe is stored in the camera, FIG. 5 is a rear view, and FIG. 6 is a right side view showing a state when a strobe photograph is taken in the camera. Also,
FIG. 7 is an enlarged top view of a main part showing a mode setting member in the camera.

The above-mentioned camera is a so-called single-lens reflex camera with a built-in strobe, and is a fixed-lens camera in which a photographing lens is integrated with a body to reduce the size.

As shown in the right side views of FIGS. 4 and 6, the taking lens 1 (see FIG. 2) of the present camera is a collapsible lens. This is configured to advance to the shooting state shown in FIG.

FIGS. 9 to 12 are side views showing a photographing optical system in the camera.

FIG. 9 shows the WIDE end, that is, the focal length f.
= 28 mm, and FIG. 10 shows a standard state, ie, a state in which the focal length f = 70 mm.
FIG. 11 shows the TELE end, that is, the focal length f = 110 m
m are shown. FIG. 12 shows a collapsed state.

As shown in these figures, the photographing optical system of the present camera has a focal length of 28 mm
It is a 4x zoom of 110 mm.

As described above, FIG. 9 shows a state at the WIDE end, that is, f = 28 mm, and FIG. 11 shows a state at the TELE end at f = 110 mm. Also, the standard f = 70
The state of mm is shown in FIG. 10, and the total length of the optical system is shorter in this state than at both ends.

Each of the lens groups is divided into a first group to a fifth group, and the respective powers are distributed so as to be negative, negative, positive, negative, and positive, and one aspheric lens is used in the fifth group. This constitutes an extremely compact and high-performance optical system. Focusing is a front focus type.
This is done by moving the group. The aperture is 4
It is arranged in front of the group and moves together with the fourth group during zooming.

As described above, in the present camera, the space between the lens groups is shortened to make the camera compact when stored.
However, in this embodiment, since the mirror and the shutter are arranged between the fifth unit and the image forming plane, the fifth unit is slightly collapsed. Further, in order to shorten the overall length of the first and second groups during collapsing, the first group is retracted slightly in the state shown in FIG. 12 from the infinity position (the most retracted state) to the closest side. It is configured as follows.

Although the power system in the lens frame 11 will not be described in detail, the driving of the first group for focusing and the entire group for zooming is controlled by a focus motor and a zoom motor built in the lens frame unit, respectively. You.
The diaphragm integrated with the fourth lens unit is controlled by a diaphragm motor (stepping motor) built in the lens frame 11.

The camera is held by the photographer at the grip portion 7 and performs a series of photographing operations by pressing the release button 2. If the zoom button 5 is operated prior to the release operation, the photographing lens is moved by a zoom driving system (not shown), and the focal length can be set to an arbitrary value.

Here, the release button 2 is a so-called two-stage switch, and is in the first stage (hereinafter referred to as 1st.
In (release), a distance measurement and a focusing operation are performed, and a series of photographing operations are performed in the second stage (hereinafter, 2nd release).

A display unit 6 is provided on the upper surface of the camera body to notify the number of frames of a film and a shooting mode which can be set by a mode operation member.

Next, in order to clarify the configuration of the present camera, the overall configuration will be described with reference to a top view in a central section shown in FIG.

As shown in the figure, a mirror unit 12 is disposed behind (an image plane side) a lens frame 11 including the taking lens 1 (see FIG. 2). In this figure, the lens frame 11 is shown in a retracted state. In the mirror unit 12, a mirror for guiding a light beam to a finder system and retracting from an optical path at the time of photographing is arranged.

The shutter 13 is a so-called vertical running type focal plane shutter, and the exposure time is controlled by the timing of the first curtain and the second curtain controlled by the magnet.

On both sides of the mirror unit 12 and the shutter 13, a spool for winding a patrone 15 and a film and a spool chamber 16 having a necessary space are arranged. A motor 14 is arranged between a magnet part of the shutter 13 for moving the film on the image plane, which is partially convex, and the lens frame 11.

The motor 14 is a power source that controls all operations other than zooming, focusing, and iris in the lens frame 11 in the present camera, and specifically includes shutter charge, mirror up / down, film winding, and film winding. This is for rewinding the film. As the motor 14, a DC motor having a housing outer diameter of 12 mm and a total length of 30 mm is used in this camera. The power of the motor 14 is switched to each drive system by a clutch mechanism which is a feature of the present embodiment, and the mechanism will be described later in detail. A battery 18 is used as an energy source for driving the motor 14 and the like. In this camera, two lithium batteries are arranged in the grip unit 7.

The patrone chamber 15, the motor 14, the battery 1
A condenser 17 for storing strobe energy is arranged in a space surrounded by 8, and is led to a light emitting unit via a strobe substrate (not shown).

Although the main structure has been described with reference to FIG. 8, although not shown, a zoom motor for controlling zooming, a focus motor for controlling focusing, and an aperture motor for controlling aperture setting are arranged inside the lens frame. Needless to say, all these actuators are appropriately controlled by an electrical system described later.

Next, in order to clarify the relationship between the units of the camera, an explanation will be given with reference to an exploded internal perspective view of FIG. Note that units equivalent to those in FIG. 8 are denoted by the same symbols.

First, the lens frame unit 11 is composed of a cylindrical portion containing an optical system and a connecting portion having a flange shape. The connecting portion is the cartridge chamber 1 described with reference to FIG.
5. It can be connected to the main unit 21 containing the spool chamber 16.

A shutter unit 13 is mounted on the mirror unit 12, and the unit set is configured to be mounted on the main unit 21 before the lens frame is joined.

Here, on the lower surface of the shutter unit 13, a shutter charge lever 2 for charging the shutter is provided.
A mirror drive lever 27 for raising and lowering the mirror is provided on the lower surface of the mirror unit 12.

In this camera, the motor 14 as the main power source is used.
The power unit having is configured so as to be connectable to the main unit 21 and the mirror unit 12 described above from below, and receives power from the motor 14 in FIG. 13 (here, having an output shaft (not shown) on the lower side). Are connected to the fork gear 24 and the spool 2 via a clutch in the power unit 22.
5 and so on.

Here, the fork gear 24 is fitted to the patrone shaft of the loaded film patrone to rewind the film, and the spool 25 holds and winds the film by a claw member or a spring member (not shown). Is to be performed.

Although not shown, a partner lever for operating the shutter charge lever 26 and the mirror drive lever 27 is also provided in the power unit 22.

Although it has been described that the mirror unit 12 is a unit having a mirror of a single-lens reflex camera, a finder unit 2 for guiding a light beam reflected by the mirror to a finder eyepiece is provided above the unit.
3 are combined. In this viewfinder unit 23,
A screen is arranged at a position equivalent to an optical system image forming plane (film surface) at the time of photographing, and a so-called pentaprism and an eyepiece optical system are also included.

Next, the internal principle of the power unit 22 of the state detecting mechanism according to the first embodiment of the present invention will be described with reference to FIG.

FIG. 14 is a block diagram showing power distribution in the power unit of the state detecting mechanism of the first embodiment.

Although it has been described that the power source of the camera is a DC motor, the motor 14 used in the present embodiment is so large that it can drive each drive system directly from the motor from the viewpoint of reducing the size of the entire camera. Large motors with high power cannot be used. Therefore, a speed reduction system 32A is arranged from the motor 14 as shown in FIG.
After being decelerated, it is transmitted to the sequence clutch 36A, which is the main mechanism of the present embodiment.

In this embodiment, the sequence clutch 36A is configured so that the power can be switched to three systems. The three systems are a shutter / mirror system 33A, a hoist system 34A, and a rewind system 35A. is there. Here, the charge lever 26 and the mirror drive lever 27 described with reference to FIG.
Are driven by the same system (shutter / mirror system 33A). The sequence clutch 36A selectively transmits power to these three systems. During driving, the driving force from the motor 14 is not transmitted at all to the other two systems.

Next, the principle of the sequence clutch 36A will be described with reference to the conceptual diagram of FIG.

FIG. 15 is a perspective view showing a sequence clutch in the state detecting mechanism of the first embodiment.

The sequence clutch 36A utilizes a so-called planetary gear.
This uses a rotatable rotary type planetary gear. It has at least three or more drive systems within the rotation range. The main constituent gears are a sun gear 31 that rotates by receiving the driving force of the motor and a planetary gear 32 that can revolve with respect to the sun gear 31. And the first-stage gears 33, 34, 35 of the respective drive systems.

The sun gear 31 receives power from the motor 14 via a reduction system 32A.
Depending on the rotation direction of the motor 14, both directions (MA,
MB).

The planetary gear 32 has a clutch cam 36.
The clutch cam 36 is rotatably supported on the upper surface with a slight load (hereinafter referred to as friction) on the clutch cam 36. The clutch cam 36 is axially supported by a member (not shown) coaxially with the sun gear 31, and the clutch cam alone can rotate without load.

The planetary gear 32 is rotatably supported on one side upper surface of the clutch cam 36 with friction. The distance between the rotation center axes of the planetary gear 32 and the sun gear 31 (hereinafter referred to as shaft) The distance is called such that the so-called gears have a backlash dimension suitable for transmitting power.

That is, since friction is added to the planetary gear 32, when the sun gear 31 rotates, the clutch cam 36 receives a force by the planetary gear 32,
The sun gear 31 is urged to revolve in the rotation direction.

Since the purpose of the sequence clutch 36A is to switch the power to at least three or more systems, the function cannot be provided only when the clutch cam 36 is always revolving.

In this embodiment, the clutch cam 36 is provided with locking surfaces 38 corresponding to the number of switching power systems, and the locking surface 38 is engaged by a clutch lever 37 which is spring-biased toward the center of the clutch cam 36. By stopping, the clutch cam 36
Is configured to be able to regulate the rotation in one direction at a specific position.

In FIG. 15, when the direction of rotation of the clutch cam is indicated by arrow MA, the clutch cam 36 is stopped by the clutch lever 37, and when rotated in the direction of arrow MB, the clutch cam 36 lifts the clutch lever 37. It keeps revolving around.

That is, in the figure, when rotating in the MB direction, FIG.
Assuming that the operation is started from the locked state shown in FIG.
A cam surface is formed at the end of the locking surface 38 so as to gradually lift the clutch lever 37 against the urging force of the spring. When lifted and rotated by a predetermined amount (here, since the system is switched to three systems, the predetermined amount is approximately 1
20 °), and the clutch lever 3 is
7 falls, and the relative position of the clutch lever 37 becomes equivalent to that in FIG.

That is, while the clutch cam 36 rotates, the clutch lever 37 performs the above-described lift operation three times. When the direction of rotation is switched from MB to MA, the clutch cam 36 revolves in the MA direction, holds the locking surface 38 initially provided on the clutch lever 37, and the revolution is prohibited. Needless to say.

By summarizing the above, the feature of the sequence clutch 36A is that the clutch is continuously switched when the motor rotates in one direction, and the power is transmitted to the selected drive system when the motor rotates in the other direction. I can say.

Returning to FIG. 15, around the clutch cam 36, the first gear of each drive system is arranged. FIG.
Is a state in which the hoisting system 34A is being driven, but the rotation of the sun gear 31 in the MA direction rotates the first-stage gear 34 of the hoisting system 34A in the direction of arrow MC, and transmits power to a spool (not shown). It has become.

Although the position of the planetary gear 32 is regulated by the locking surface 38, the sun gear 3
1, the center of rotation of each of the planetary gear 32 and the first stage gear 34 of the hoisting system are aligned on a straight line.

The planetary gear 32 and the first stage gear 3
In this state, an appropriate backlash is secured between the gears 4 and 4.

When the other locking surface 38 is locked by the clutch lever 37, the planetary gear 32 meshes with the first gear 35 of the rewinding system 35A or the first gear 33 of the shutter / mirror system 33A. .

In these states, the sun gear 31, the planetary gear 32, the first gear 35, or the sun gear 3
The relative relationship between each gear and the locking surface 38 is configured such that the respective rotation centers of the planetary gear 32 and the first-stage gear 33 are aligned on a straight line. That is, the clutch cam 3
When 6 rotates in the MB direction in the drawing, the planetary gears 32 revolve while passing through the meshing positions at the time of transmission of the respective drive systems.

If the friction added to the planetary gear 32 is extremely small, the clutch cam 36
If the clutch gear 37 attempts to lift the clutch lever 37 against the spring force, it slips and cannot revolve, and the planetary gear 3
The operation becomes only the rotation of No. 2.

If the friction is increased more than necessary, the above-mentioned slip is eliminated. However, when driving each drive system, the friction is involved as a transmission loss, so that the energy loss to the motor power increases. In addition, the driving efficiency is significantly reduced.

FIG. 20 is an enlarged sectional view of the planetary gear 32.

In this embodiment, as shown in FIG. 20, the planetary gear 32 fixed to the clutch cam 36 by bonding or the like is used.
A stable friction is obtained by urging the planetary gear 32 with a coil spring 32b against the shaft 32a.

FIG. 21 is an enlarged sectional view showing another example of the planetary gear 32.

As shown in FIG. 21, the planetary gear 32
As another example, it is also possible to obtain friction by using a wave washer 32c having a bend in a washer or a disc spring in place of the coil spring 32b.

FIGS. 16 to 19 are model diagrams of the upper surface of the clutch portion of the present embodiment arranged in the power unit 22 described with reference to FIG.

Although the rotation direction of the cam (driving side and switching side) is opposite to that of FIG. 15 which explains the principle, it has three driving systems as in FIG.

First, FIG. 16 shows a state in which the rewinding system is being driven. The sun gear 41 rotates in the direction of the arrow, and the planetary gear 43 has the clutch cam 42 with the engagement surface of the clutch lever 4.
7 at the point PB, the clutch cam 42
Is controlled, and the rewinding system 44 is driven in the direction of the arrow.

The clutch lever 47 is connected to the clutch cam 4
The spring is biased in two directions, and is in contact with the clutch cam 42 at the point PA. That is, the position of the clutch lever 47 is determined by the cam shape of the clutch cam corresponding to the point PA.

Now, consider the case where the rewinding is completed and the shutter / mirror system is driven next.

After the motor stops, the motor rotates reversely to switch the clutch. As shown in FIG. 17, the sun gear also starts rotating in the direction of the arrow.

The planetary gear 43 shown in FIG.
As shown in FIG. 1, a friction similar to that of the planetary gear 32 is built in, whereby the clutch cam 42 revolves in the direction of the arrow. That is, the planetary gear 43 disengages from the first stage gear 44 of the rewinding system and revolves toward the first stage gear 45 of the shutter / mirror system.

At this time, the clutch lever 47 is lifted from the point PA side by the cam surface of the clutch cam 42 as shown in FIG.

Almost at the same time when the planetary gear 43 has passed the meshing position with the first-stage gear 45 of the shutter / mirror system, the clutch lever 47 is disengaged from the top dead center and pressed against the next cam surface (bottom dead center) by a spring. You. At this time, the state of these levers and clutches is detected by a sensor described later, and the motor that has been turned to the clutch switching side is
Stop.

FIG. 18 shows this state. Since there is a slight overrun due to the characteristics of the motor, the engaging surface side of the clutch lever has not yet come into contact with the clutch cam.

Next, the motor rotates to the driving side. As a result, the overrunning clutch cam 42 becomes
At the point PD and is locked by the clutch lever 47 at the point PD. At this time, the clutch lever 4
7 is spring-pressed at the PC point corresponding to the bottom dead center of the clutch cam 42 and its position is regulated. Therefore, the rotation of the sun gear 41 is transmitted as the rotation in the direction of the arrow to the first gear 45 of the shutter / mirror system in FIG.
A series of clutch operations is established.

In this manner, a similar switching operation is performed when moving from the first stage gear 45 of the shutter / mirror system to the first stage gear 46 of the hoisting system. Further, the switching is not performed only to the adjacent drive system, but it is also possible to switch from the shutter / mirror system to the rewinding system without stopping, for example, from the shutter / mirror system as needed.

A sensor (not shown) and a position detection method will be described in detail later.
3 will be described.

FIG. 43 is a developed view in which the circumference including the cam surface of the clutch cam described above is developed.

As shown in this figure, the three locking positions are specified as positions corresponding to the respective drive systems.

In this embodiment, the shutter / mirror system is set as the initial position of the camera in a normal standby mode. In the clutch cam, the top dead center, that is, the maximum lift position when switching from each locking surface to the next locking surface is set to the same radius. However, the lift amount up to the top dead center is divided into two types.

In FIG. 43, the lift amounts are indicated by h1 and h2. As is clear from this, when the shutter / mirror system corresponding to the initial position is locked, the clutch lever is moved more than the top dead center by h2. Only in the down position,
When the other positions are locked, the position is stabilized at the position lowered by h1.

Thus, based on the difference between the relative positions of the clutch lever, the initial position can be determined from among the three types of locking positions.
In addition, the outline of the position detection according to the present embodiment is that it is possible to determine another locked position by determining the number of the locked position from the initial position.

Next, the power portion of this embodiment will be described in detail below. The internal structure of the power unit 22 mainly described with reference to FIG. 13 will be described in detail.

FIG. 22 is an exploded perspective view of a gear train from the motor to the clutch unit described above.

[0092] In this figure, for clarity of the configuration, only the main parts are shown in an expanded manner in the up-down direction, but actually, adjacent gears mesh with each other.

The pinion gear 51 is a gear press-fitted into a motor shaft, and is a power source of the present embodiment. A gear train composed of gears 52, 53, 54 sequentially meshes with the pinion gear 51 to rotate the sun gear 41, which is the input side of the clutch unit. In the present embodiment, since the driving object is a film, a shutter, or the like with respect to the power of the motor, it cannot be driven directly, and it is necessary to use the motor at a reduced speed.

The friction of the coil spring 32b and the wave washer 32c has been described with reference to FIGS. 20 and 21 assuming that the clutch cam 42 revolves. Unless the output shaft of the motor is decelerated to some extent, the ratio of the loss to the motor power increases, and the efficiency of the entire mechanism is significantly reduced.

Accordingly, in this embodiment, a clutch mechanism capable of performing high-speed switching with very little loss is obtained by securing a reduction ratio of about 30 by meshing the four-stage gear from the pinion gear 51 to the sun gear 41 in FIG. (If the reduction ratio is further increased, the loss is further reduced, but the time required for switching is increased).

On the outer periphery of the clutch cam 42, the three types of power systems described with reference to FIG.

Next, the respective power systems will be described in detail with reference to FIG.

FIG. 23 is a developed perspective view of a gear train in the shutter / mirror system.

In this figure, a gear 55 is a partner with which the planetary gear 43 can mesh, and in FIG. 16, corresponds to a gear indicated as a first-stage gear 45 of a shutter / mirror system. The gear 55 meshes with the gears 56 and 57 in sequence, and the gear 57 meshes with a cam gear 58 (hereinafter, SM cam gear 58) for a shutter / mirror which is a lever drive source of the present drive system.

The SM cam gear 58 has a mirror cam 58a for driving a mirror system on the upper side, and a shutter charge cam 58 for charging a shutter system on the lower side.
The cams 58a and 58b are brought into a mirror-up state or a shutter charge completed state by stopping the cams 58a and 58b.

Therefore, in order to output a signal corresponding to the SM cam gear 58, a timing gear 59 having the same number of teeth is meshed with the SM cam gear 58, and a sliding piece fixed to the timing gear 59 is attached to the timing board 60.
Of the SM cam gear 5
8 can be detected.

Next, the cam provided on the SM cam gear 58 will be described in detail with reference to FIGS.

FIG. 24 is a side view of the SM cam gear 58, and FIGS. 25 and 26 are cross-sectional views taken along the lines AA 'and BB', respectively.

FIG. 25 (section AA ') is a sectional view showing a cam 58a for driving the mirror. About 2/3 of the circumference is formed by R1 having the same radius, and a part thereof is located at the top dead center. The portion connecting R1 and R2 formed by R2 is R
1, R2 is smoothly connected. Here, the top dead center range of R2 corresponds to the state where the mirror is up as the state of the camera.

FIG. 26 (BB 'section) is a sectional view showing the shutter charging cam 58b, which is formed by a smooth cam between the top dead center range indicated by R4 and the minimum radius indicated by R3. Have been.

The cam shown in FIGS. 24 to 26 is constituted by a molded part which is integrally formed coaxially with the gear portion of the SM cam gear 58.

Next, a lever mechanism for driving the mirror / shutter by the SM cam gear 58 will be described.

FIG. 29 is a perspective view of a main part of the mirror system in this embodiment.

The mirror lever 61 is a lever that is rotatable with respect to the center of rotation, and one end 61 A of the mirror lever 61 comes into contact with the SM cam gear 58. The other end 61B
Is in contact with the side plate lever 62. The side plate lever 62 is also a rotatable lever having a center of rotation.

The side plate lever 63 is in contact with the other end of the side plate lever 62. The side plate lever 63 is also a rotatable lever. The mirror 64 is provided with a rotation center shaft on the upper end side, and the rotation center is held by a mirror unit (not shown), so that the mirror 64 can rotate within a range of 45 °.
A mirror frame pin 65 is fixed to the side surface (side plate lever side) of the mirror 64 so as to be integral with the mirror 63, and the mask frame pin 65 contacts the other end of the side plate lever 63 with respect to the side plate lever 62. In contact.

With the above configuration, the mirror 64 can be moved from the normal position (down position) to the up position by driving the mask frame pin 65 in the mirror up direction.

FIGS. 30 and 31 are explanatory diagrams in which each lever is modeled for the above-mentioned mirror operation. Components having the same functions as those in FIG. 29 are denoted by the same reference numerals.

FIG. 30 shows a normal state (mirror down state).
And the mirror 64 is pressed downward by a spring (not shown). As a result, the mask frame pin 65 comes into contact with the side plate lever 63, and the pressing force is further reduced.
2 has been transmitted.

FIG. 31 shows a mirror-up state.
The mirror lever 61 moves in the direction of the arrow due to the rotation of the SM cam gear 58, so that the side plate levers 62 and 63 respectively rotate, whereby the mask frame pin 65 is lifted upward against the spring force. It is supposed to be.

[0115] The state shown in FIG.
Is located at the top dead center position described with reference to FIG.
1 is in the state of maximum lift. When the mirror 64 goes down, if the mirror lever 61 comes to the retractable position by the rotation of the SM cam gear 58, it goes without saying that each lever returns to the state shown in FIG. 30 by the spring force of the mirror 64. .

FIGS. 27 and 28 show the SM cam gear 5
FIG. 8 is an explanatory diagram showing a relationship between a mirror lever 8 and a mirror lever 61;
The state in which the mirror driving cam lifts the mirror lever 61 that presses the side plate lever 62 is shown. And FIG.
7 shows a normal stop position (mirror down position), and FIG. 28 shows a mirror up position (equivalent to FIG. 31).

Next, the charging operation of the shutter will be described with reference to FIGS.

FIG. 32 is a schematic view of the focal plane shutter used in the camera shown in FIG. 1 as viewed from the subject side.

As shown in the figure, a magnet section 72 is provided on one side of the mask section 70. The magnets of the first and second curtains move the shutter lever 71 from the free state of the solid line to the charged state of the broken line. It is charged by moving by L.

When the magnet portion 72 is energized in this charged state, the magnet is attracted and the magnet is turned off to form a second time. In this embodiment, the shutter lever 71 is charged by the SM cam gear 58. It has become.

FIGS. 33 and 34 are top views of the camera in the vicinity of the BB 'section in FIG. 24, as seen from above the camera, in which the charged state is more clarified.

FIG. 33 shows a free state, that is, a state where the shutter is not charged.
1 is urged in the direction of the arrow in the figure by a spring force attached to the magnet portion 72. The shutter charge lever 26 is rotatably provided at one end while being pressed by a spring force, and has the other end in contact with the cam surface of the SM cam gear 58. The state shown in FIG. 33 corresponds to a state immediately after the exposure is completed in the present camera.

In FIG. 33, when the shutter is to be charged by the motor, the SM cam gear 58 rotates clockwise. As a result, the shutter is gradually charged and reaches the charge completed state shown in FIG.

Here, the shutter charge lever 26 is in contact with the above-described top dead center area on the cam of the SM cam gear 58. Therefore, even if the motor stops, the shutter charge lever 26 is actuated by the spring force from the shutter lever 71. 26 does not cause the SM cam gear 58 to rotate.

In the description of FIG. 23, it has been described that the stop position of the SM cam gear 58 is secured by the timing gear 59 and the timing board 60. The configuration of the timing board 60 will be described in detail with reference to FIG.

FIG. 35 is a bottom view of the timing board in FIG. 23 as viewed from below.

In the figure, regions Wa, Wb and Wc are conductive pattern portions. The sliding contact piece integrally fixed to the timing gear 59 shown in FIG. 23 has a width sufficient to cover the minimum radius R1 to the maximum radius R2 of the pattern of FIG.

As shown in FIG. 35, the pattern portion
It is divided into three parts, a Wa part, a Wb part, and a Wc part, each of which is input to the detection unit in a pattern (not shown).

The sliding contact piece has a contact end on the same line as the center of rotation, and rotates on the pattern portion. Therefore, when the sliding contact is located in the range of the region Wb or Wc, the region Wa and the region Wb conduct, and the region Wa and the region Wc conduct, respectively, and the sliding contact is in the range of the region Wb or It can be detected that it exists in the range of the area Wc.

Here, the area Wb corresponds to the state where the charging of the shutter corresponding to FIG. 34 has been completed, and the area Wc corresponds to the state where the mirror corresponding to FIG.

In controlling the motor, the brake is applied when the region Wa and the region Wb are conducted when the shutter is charged, and the brake is applied when the region Wa and Wc are conducted when the mirror is up. Although a stable stopping operation is obtained, details will be described later with reference to a timing chart.

Next, a description will be given of a hoisting gear train in this embodiment.

FIG. 36 is an exploded perspective view showing the gear train of the hoisting system.

The hoisting gear train is developed vertically like the shutter / mirror gear train, but adjacent gears mesh with each other.

In the figure, a gear 81 is a first gear in which the planetary gear meshes when the hoist system is driven, and corresponds to the gear indicated by the hoist first gear 46 in FIG. In FIG. 13 described above, the unit configuration of the present embodiment is described.
Since the power must be transmitted to the side facing the motor, a gear train that transmits the lower surface of the main body is required.

In FIG. 36, a two-stage gear 87 is rotated from the lower side of the main body from a gear 81 via a series of idle gears 82 to 86. The spool that holds and winds the film is provided with an integrally formed claw portion and a gear portion, and the spool is rotated by engagement of a series of gear trains. In addition,
The upper projection of the spool is rotatably fitted to an upper portion of a spool chamber provided in the main unit.

Next, the gear train of the rewinding system in this embodiment will be described.

FIG. 37 is an exploded perspective view of the gear train of the rewinding system.

In the figure, a gear 91 is a first gear in which the planetary gear meshes when the rewind system is driven, and corresponds to the gear indicated by the first gear 44 of the rewind system in FIG. The gear 91 meshes with the two-stage gear 92, and then meshes with the gear portion of the fork 93. The fork 93 has a fork at the tip, which transmits rotation corresponding to the patrone shaft of the loaded film patrone, and the fork is coaxial with a patrone chamber provided in the main body unit, and The fork portion is spring-biased in the direction of the arrow in the drawing so that it can move forward and backward when the cartridge is inserted.

Here, in order to effectively use the power of the motor, the total reduction ratio from the motor is set to about 240 for the hoisting system, and the total reduction ratio is set to about 150 for the rewinding system.

The internal structure of each drive system has been described above.
The mechanism that enables shutter charging, mirror driving, film winding, and film rewinding by using a single motor provided in the power unit via a clutch unit has been described.

Next, as an example in which the above-described camera position detecting device is applied, an example used for controlling a sequence motor of a camera will be described.

FIG. 45 is a block diagram showing an application example of the position detecting device in the state detecting mechanism of the first embodiment.

In FIG. 45, CPU 120 sequentially executes programs stored in an internal ROM to control peripheral ICs and the like. AFIC
Reference numeral 134 denotes an IC for autofocus. In this camera, the TTL phase difference detection method is adopted as the autofocus method.

First, the AFIC 134 has a CPU
120, the AFIC reset signal (AFRES) Si
g101 is sent and reset. Light from the subject passes through the photographing lens and reaches a photo sensor array arranged on the upper surface of the AFIC 134. Then, processing such as light intensity integration and quantization is performed inside the AFIC 134. Then, a focus shift amount is calculated as the distance measurement information.

When the light quantity integration is completed, a signal (AFEND) Sig 102 indicating that the light quantity integration has been completed is sent to the CPU.
Sent to 120. AFIC134 and CPU
A signal indicating that communication between the communication terminals 120 is to be performed (AFCEN)
Sig103, data signal (DATA) Sig104,
When the synchronization clock signal (CLK) Sig105 is
Transferred to U120.

If the characteristics of the respective elements of the photosensor array vary, accurate distance measurement information cannot be obtained as it is. Therefore, the variation information of the photo sensor array is stored in advance in the EEPROM 135 which is a nonvolatile storage element, and the CPU 120 performs a correction calculation of the distance measurement information obtained from the AFIC 134. In addition, the EEPROM 135 stores various adjustment values such as mechanical variations and variations in electrical characteristics of various elements. These adjustment values are stored in the EEPROM 1 as necessary.
35, that is, a signal (EPCEN) Sig 107 for activating communication, that is, a data signal (DA)
TA) Sig108, synchronous clock signal (CLK) Si
Reading is enabled by g109. Note that the CPU 1
The transfer of data among 20, the AFIC 134, and the EEPROM 135 is performed by serial communication.

The date module 137 imprints the date on the film in accordance with the imprint signal Sig110 from the CPU 120. The light emission time of the imprint lamp changes stepwise according to the film ISO sensitivity. The interface IC (hereinafter referred to as IFIC) 138 is activated by an IFIC activation signal (IFCENb) Sig 111 from the CPU 120 and communicates with the CPU 120 and a latch signal (LATC).
H) Sig112, 4-bit bus line signal (D0b ~
D3b) Sig113 to Sig116, D / Ab signal S
parallel communication using ig117, measurement of subject brightness, measurement of camera internal temperature, waveform shaping of output signal of photo interrupter, etc., constant voltage drive control of motor, generation of temperature stable voltage, generation of temperature proportional voltage, battery Check of remaining amount, reception of infrared light remote control, motor driver IC
Control, control of various LEDs, monitoring of a low voltage of a power supply voltage, control of a booster circuit, and the like.

Note that the latch signal Sig112 is a signal for setting a timing for reading a signal on the bus line. The D / Ab signal is a 4-bit bus line signal Sig1
13 to Sig 116 are signals indicating whether they indicate an address or data. D / Ab
When the signal is "L", the 4-bit bus line signal Sig1
13 to Sig 116 represent an address, and when the D / Ab signal is “H”, the 4-bit bus line signal Sig 113 to
Sig 116 represents data.

The measurement of the object brightness is performed using a two-part silicon photodiode 170. The light receiving surface of the sensor is divided into two parts such as a central part of the screen and a peripheral part thereof.
Photometry and average photometry using the entire screen for photometry can be performed. The photometric sensor outputs a current corresponding to the subject brightness to the IFIC 138. I
The FIC 138 converts the output from the photometric sensor into a voltage and transfers it to the CPU 120. The CPU 120 performs an exposure calculation, a backlight judgment, and the like based on the voltage information.

In measuring the temperature in the camera, a voltage proportional to the absolute temperature is output by a circuit built in the IFIC 138, and the signal is subjected to A / D conversion by the CPU 120 to obtain a value. The obtained temperature measurement value is used for correction of a mechanical member whose state changes according to the temperature, an electric signal, and the like. The waveform shaping of the photo interrupter or the like is performed by comparing the photocurrent output from the photo interrupter or the photoreflector with the reference current and outputting it from the IFIC 138 as a rectangular wave. At this time, noise is removed by giving the reference current a hysteresis. The communication with the CPU 120 can change the reference current and the hysteresis characteristics.

To check the remaining capacity of the battery, a low resistance is connected to both ends of the battery, and the voltage at both ends of the battery when current flows is divided in the IFIC 138 to determine
The signal is output to the CPU 120 and the CPU 120 performs A / D conversion to obtain a voltage value. In the reception by the infrared light remote controller, modulated infrared light is emitted from the light emitting LED 141 of the remote control transmission unit 140, and the infrared light is received by the light receiving silicon photodiode 142. The output of the silicon photodiode 142 is subjected to processing such as waveform shaping in the IFIC 138 and transferred to the CPU 120.

A dedicated terminal is provided in the IFIC 138 for monitoring the low voltage of the power supply voltage. When the voltage input to the IFIC 138 becomes lower than a specified value, a reset signal is output from the IFIC 138 to the CPU 120 to prevent runaway of the CPU 120 or the like. Preventing. The control of the booster circuit operates the booster circuit when the power supply voltage falls below a predetermined value. In addition, the IFIC 138 is connected to an LED 143 for displaying in the viewfinder for completion of AF ranging, a flash emission warning or the like, or an LED used for a photo interrupter or the like.

The on / off of these LEDs and the control of the amount of emitted light are controlled by the CPU 120 and the EEPROMs 135 and I / O.
Communication is performed between the FICs 138, and the IFIC 138 directly controls the communication. What is controlled is the LED current Sig131 of the SCPI147 and the LED current Sig1 of the LDPI148.
32, ZMPR172 LED current Sig133, ZM
LED current Sig134 of PI173, AVPI152
LED current Sig135, WPR178 LED current Sig146 and viewfinder display LED143
On and off.

In the constant voltage drive control of the motor, the CPU
The drive voltage can be set in a stepwise manner by communication with the control unit 120. The motor driver IC 139 feeds the film, charges the shutter, and drives the mirror. The motor 144 corresponds to the motor 14 in FIG. 8 (hereinafter, referred to as a sequence motor to distinguish it from other motors), and a lens for focus adjustment. Driving LD motor 145,
Driving of three motors of the ZM motor 146 for zooming of the lens frame, driving of the booster circuit, driving of the LED 171 for displaying the self-timer operation, and a front curtain magnet (MGF) for attracting and holding the front curtain of the focal plane shutter.
176, a rear curtain magnet (MGS) 177 for holding the rear curtain of the focal plane shutter by suction is controlled.

These operation controls, for example, which device is to be driven, whether the motor is to rotate forward or reverse,
To apply a brake, etc.
38, and the IFIC 138 controls each transistor of the motor driver 139 by a signal Sig 118 for turning on and off. Whether the sequence motor 144 is in the state of shutter charge, film winding, or film rewinding is determined by a photo interrupter SCPI1 for detection.
The signal Sig 119 is output to the CPU 120.

The extension amount of the lens is detected by the photo interrupter LDPI 148 attached to the LD motor 145, and the output Sig 120 is sent to the CPU 120 after waveform shaping by the IFIC 138. The zooming state of the mirror frame is based on the photo interrupter ZMPI1 built in the mirror frame.
73 and the photoreflector ZMPR172. When the lens frame is between TELE and WIDE, the high reflection portion provided on the lens frame is configured to face the ZMPR 172, and in other ranges, the low reflection portion is configured to face the ZMPR 172.

As a result, the output Sig1 of the ZMPR 172 is output.
21 to the CPU 120, the TELE end, W
The IDE end can be detected. ZMPI173 is a ZM
The output Sig 122 is attached to the motor 146, and the output Sig 122 is input to the CPU 120 after waveform shaping by the IFIC 138, and detects the zooming amount from the TELE end or the WIDE end.

The motor driver IC 150 includes a stepping motor for driving the aperture adjustment unit and an AV motor 151.
Is the on / off signal (ENA) Sig from the CPU 120.
136 and a forward / reverse signal (IN) Sig123. The AVPI 152 shapes the waveform of the output Sig 124 with the IFIC 138 and
The signal is input to U120, and the aperture opening position is detected.

The liquid crystal display panel 136 uses the segment signal (SEG) Sig 125 and the common signal (COM) Sig 126 sent from the CPU 120 to display the number of film frames, the shooting mode, the strobe mode, the aperture value, the remaining battery level, and the like. It has become.

A flash unit 179 is used to give a necessary luminance to a subject by illuminating a light emitting tube when the luminance of the subject is insufficient at the time of photographing or auto-focus distance measurement. At IFIC
138 strobe charging signal (STCHG) Sig12
7, strobe light emission start signal (STON) Sig128,
Signal (STOFF) Sig1 for stopping strobe light emission
29 is controlled by each signal. Also,
The charging voltage of the strobe is C as VST signal Sig130.
The data is sent to the PU 120.

The WPR 178 is a photo reflector for detecting a film feed amount. This WPR178
Are arranged to face the perforations of the film. Since the reflectance of light is different between the film surface and the perforated portion, the output of the WPR 178 is different when corresponding to each. When the film is fed, the WP 178 alternately opposes the film surface and the perforation, so that the output Sig 147 of the WPR 178 has a pulse shape, and the movement amount for one frame of the film can be detected by counting the number.

Key signals 0 to 5 (KEY0 to KEY5) S
ig 137 to sig 142 and key commons 0 to 2 (K
EYCOM0 to 2) Sig143 to Sig145 are used to detect which of the switches 121 to 133 is on.

The above KEY0 to KEY5 are usually
The signal level is in the “H” state because it is pulled up inside 20. Here, for example, KEYCOM0Si
It is assumed that g143 is “L”, KEYCOM1Sig144 is “H”, and KEYCOMSig145 is “H”. At this point, if R1SW121 is turned on, KEY0
Sig 137 changes from “H” to “L”. Therefore, the signal levels of KEYCOM0 to 2Sig143 to Sig145 and KEY0 to 5Sig137 to Sig142
Switch 121 to switch 1
It is possible to know which of 33 is on. In addition, KEYCOM0 to 2Sig143 to Sig
145 cannot be set to "L" two or more at the same time.

First release switch (R1SW)
Reference numeral 121 is turned on when the release button is half-pressed, and performs a distance measuring operation. The second release switch (R2SW) 122 is turned on when the release button is fully pressed, and a shooting operation is performed based on various measured values. Zoom up switch (ZUSW) 12
Reference numeral 3 and a zoom down switch (ZDSW) 124 perform zooming of the lens frame. When the ZUSW 123 is turned on, zooming is performed in the long focal direction, and when the ZDSW 124 is turned on, zooming is performed in the short focal direction.

When the self switch (SELFSW) 125 is turned on, the camera enters a self-timer shooting mode or a standby state of the remote controller. In this state, the R2SW12
When 2 is turned on, self-timer shooting is performed, and when a shooting operation is performed with the remote control transmitter, shooting with the remote control is performed. When the spot switch (SPOTSW) 126 is turned on, a spot metering mode is set in which metering is performed only at a part of the center of the shooting screen. Note that SPOTSW126
Normal photometry when is off is performed using the entire shooting screen.

Pict 1 switch (PCT1SW) 127
A pictograph 4SW (PCT4SW) 130 and a program switch (PSW) 131 are switches for switching a program photographing mode, and the photographer selects a mode according to photographing conditions. When the PCT1SW127 is turned on, a portrait mode is set, and the aperture and the shutter speed are determined so that the depth of field becomes shallow within an appropriate exposure range. When the PCT2SW128 is turned on, a night view mode is set, and the exposure is set one step lower than the value of the appropriate exposure during normal shooting. When the PCT3SW 129 is turned on, a landscape mode is set, and the values of the aperture and the shutter speed are determined so that the depth of field becomes as deep as possible within an appropriate exposure range.

When the PCT4SW130 is turned on, a stop motion mode is set, and the shutter speed is set to be as fast as possible. In this case, the red-eye prevention mode of the flash mode cannot be used.

The above PCT1SW127 to PCT4SW
130 cannot select more than one at the same time.

A PSW 131 is a switch for a normal program photographing mode. By pressing this PSW 131,
Reset of PCT1SW127 to PCT4SW130 and reset of an AV priority program mode described later are performed. When the AV priority switch (AVSW) 133 is turned on, the shooting mode becomes the aperture priority program mode. In this mode, the AV value is determined by the photographer, and the shutter speed is determined by a program according to the AV value. In this mode, PCT2SW128 and PCT4SW13
0 is a switch for setting the AV value without the above-mentioned function. PCT2SW128 is a switch for increasing the AV value, and PCT4SW130 is a switch for decreasing the AV value.

A flash switch (STSW) 132 is a switch for switching the flash mode of the flash. Normal flash mode (AUTO) and red-eye reduction automatic flash mode (AUTO) are provided.
-S), a switch for switching between a forced light emission mode (FILL-IN) and a strobe off mode.

The power switch (PWSW) 153 is a main switch of the camera.

A panorama switch (PANSW) 154 is a switch for detecting whether the photographing state is panoramic photographing or normal photographing, and is turned on during panoramic photographing.

A back cover switch (BKSW) 155 is a switch for detecting the state of the back cover. When the back cover is closed, the back cover is turned off. When the state of the BKSW 155 is changed from ON to OFF, the loading of the film is started.

Shutter charge switch (SCSW)
Reference numeral 156 denotes a switch for detecting a shutter charge.

Mirror up switch (MUSW) 157
Is a switch for detecting mirror up and is turned on when mirror up.

A DX switch (DXSW) 158 is a D indicating the sensitivity of the film printed on the film cartridge.
This is a switch for reading the X code and for detecting the presence or absence of film loading, and is composed of five switch groups (not shown).

Pop-up switch (PUPSW) 15
9 is a switch for controlling the strobe. PUPSW1
Reference numeral 59 is interlocked with the movement of the strobe light-emitting unit. When the light-emitting unit is raised, the PUPSW 159 is turned on to perform strobe charging. If the subject is low in brightness and the flash mode is the normal automatic flash mode (AUTO) or the red-eye reduction automatic flash mode (AUTO-S) and the PUPSW 159 is turned on, flash flash is permitted.

A rewind switch (RWMSW) 160 is a switch for forcibly rewinding the film. R
When WMSW 160 is on, the film is forcibly rewound.

The XSW 174 is a switch for setting the timing of strobe light emission, and is turned on when the front curtain of the shutter finishes running, and turned off when the shutter charge is completed.

The piezoelectric buzzer (PCV) 175 emits a sound at the time of focusing at the time of auto focus and at the time of operating a switch.

Next, a method of detecting the clutch portion used in this embodiment will be described with reference to FIGS.

As described above, since the clutch portion is composed of a plurality of cams and a locking surface, the relationship between the clutch lever and the clutch cam for locking the cam becomes a problem.
That is, it is necessary to reliably and instantaneously determine to which drive system power is to be transmitted when switching to the motor rotation direction on the drive side is performed at what timing from the rotation of the motor in the clutch switching direction. Therefore, in this embodiment, the position of the clutch cam can be detected by the following method.

In FIG. 43, the development of the clutch cam has been described. However, the lift amounts h2 and h1 are different between the locking surface at the shutter / mirror driving position and the winding / rewinding locking surface. That is, when the clutch cam is rotating in the switching direction, the state in which the shutter / mirror driving position can be locked starts from the moment when the lift amount h2 falls from the top dead center.
It is until it goes over the next top dead center and goes down. Therefore, since there is only one point where h2 decreases during one rotation of the clutch cam, the absolute position can be grasped by detecting the state of the cam surface or the lever at this point. In this embodiment, a method for detecting the absolute position by a method for detecting the position of the clutch lever in contact with the cam will be described in detail below.

FIG. 38 shows the relationship between the clutch cam and the clutch lever. The lever is biased in the direction of the arrow.

The difference from the conceptual diagram described with reference to FIG. 16 and the like is that the detection unit (upper side in the figure) is integrally formed. The sensor monitoring position (SE point) indicated by the arrow is the detection point of the only photoelectric sensor in this clutch,
In this embodiment, this is a place where the state of the clutch lever 47 can be detected by a photo interrupter (hereinafter, SCPI).

FIG. 44 is an enlarged perspective view showing the relationship between the SCPI and the clutch lever 47. As shown in FIG.

FIG. 38 shows a state where the shutter / mirror position is locked. That is, the clutch lever 47 is located at a position h2 lower than the outermost periphery of the clutch cam 42. At the SE point, the clutch lever 47
The Xd portion in the drawing corresponds to the Xd portion. Here, in order to explain what the Xd portion is, a cross section CC ′ is shown in FIG.

Although the thickness of the detection portion is L, the thickness of the Xd portion corresponding to the SE point is L1. Then, as apparent from FIG. 38, when the clutch lever 47 is lifted by the clutch cam 42, the detection surface corresponding to the SE point moves to Xe and Xf. The Xe portion has a thickness L2, and a hole is formed in the Xf portion, and there is no blockage of the photo interrupter. Here, the clutch lever 47 is a molded member in which a locking portion and a detecting portion are integrally formed.

Since the photointerrupter SCPI receives the projected infrared light, the Xd portion and the Xd portion having different thicknesses even if the clutch lever 47 is integrally formed.
Different outputs can be obtained if the transmittance of the portion e is different. More specifically, in this embodiment, the transmittance of the Xd portion is set to approximately 0, the Xe portion is set to approximately 25%, and the Xf portion is set to 100% because of the holes. Therefore, the thickness of the clutch lever 47 is L1: 0.
7 mm, L2: 0.2 mm, and the total width: L is set to 0.8 mm from the distance between the packages of the photointerrupter SCPI.

FIG. 44 is a perspective view of the clutch lever and the SCPI in order to clarify the positional relationship of the clutch lever 47 with respect to the switch section of the SCPI. Note that the SCPI signal is guided to the detection unit by a flexible substrate (not shown).

With these configurations, the SCPI can always grasp the lift amount of the clutch lever 47 in the three states of maximum, h1 down and h2 down.
Although the material of the clutch lever has been described as being a mold here, it goes without saying that the characteristics of the unit itself are such that the color can be almost completely blocked by a plate of about 0.7 mm. Further, in the present embodiment, a thickness of 0.2 mm
Although a 5% transmission material is used, the thickness is not particularly limited to this, and there is no mechanical problem even if it is appropriately changed as necessary.

It has been described that the absolute position can be detected because there is only one range where h2 is down in the entire circumference of the cam.
The behavior of the clutch lever 47 will be described in detail with reference to FIGS.

FIG. 38 shows a state in which the shutter / mirror position is locked, that is, a normal standby position.
Considering the actual shooting operation, this camera drives the drive system in the order of winding and shutter charge after the end of exposure.

Therefore, the clutch unit must also be switched immediately after the exposure is completed (including until the mirror is lowered), and the power must be transmitted to the hoisting drive system. After the mirror down ends in the state of FIG. 38, the motor starts reverse rotation. In this case, the reverse rotation means a rotation in the clutch switching direction, so that the clutch cam 42 is disengaged from the locking surface.
Turn clockwise.

This is the state shown in FIG. 39, in which the clutch lever is lifted against the urging force of the spring. FIG. 39 shows a state in which the lift has been completed and the rotation has progressed to the top dead center of the cam.
The Xf portion, which is a hole, corresponds to the sensor surface, that is, the SE point.

Now, the output level of the sensor in this state is set to H
high (hereinafter H level). The output level of the light shielding unit corresponding to FIG. 38 is set to Low (hereinafter, L level). Further, the output level corresponding to the intermediate Xe part is set to Mi.
d (hereinafter M level). However, the output here is S
Consider a waveform output from the CPI alone that is in a stable state, that is, does not include a value output momentarily during switching. Therefore, when the clutch lever 47 moves from, for example, Xd to Xf during the switching, Xe is momentarily interrupted on the way.
Is obtained, but in this description, that portion is omitted for convenience.

After the state of FIG. 39, the motor continues to rotate further, so that the cam continues to rotate clockwise, and when the top dead center range ends, h1 is reduced. As a result, the clutch lever 47 also rotates following the clutch cam 42, and S
The detection unit corresponding to the point E is the Xe unit. The Xe portion is determined, and the motor stops. That is, when the motor is rotated in the mechanical system driving direction, the hoisting system is driven.
Guaranteed by the department.

FIG. 40 shows a state at the moment when the motor stops.

[0200] The motor that has been braked by the M level determination also slightly overruns. Therefore, in this state, the engaging surface of the clutch cam 42 is not in contact with the clutch lever 47. In this camera, exposure to winding is a series of operations, so the state in FIG. 40 is instantaneous, and the motor switches to rotation in the driving direction. Then, the clutch cam 42 is locked,
FIG. 41 shows a state where the hoisting system is driven.

The switching from the shutter / mirror system to the hoisting system has been described above. Here, the determination of the M level was performed to detect the Xe portion. However, as a feature of the present embodiment, there are two ranges where the output of the M level is output, so that the absolute position cannot be detected. Therefore, in practice, it is necessary to determine the level and determine the level count (the number of M levels). This camera determines that the first M level is the upper part of the winding and the second M level is the rewinding part with respect to the initial position.
Judgment has been made. Therefore, if you want to forcibly rewind during shooting, the initial position (shutter
The clutch rotated from the mirror position) passes through the hoisting system,
By stopping at the second M-level determination, arbitrary rewinding from any state is possible.

Next, prior to description of the overall operation, the clutch mechanism during a series of photographing operations will be described with reference to a timing chart shown in FIG. Although the camera to which the state detection mechanism of this embodiment is applied incorporates a zoom mechanism and an autofocus mechanism in the lens frame unit, the timing chart does not directly relate to the power system of the camera body. The behavior of the actuator is omitted.

This camera has a two-stage stroke release. Distance measurement, lens extension, etc. are performed with the release. This operation is performed between timings T01 and T02. Normally, when the focus evaluation cannot be obtained, a warning or the like is issued and the operation does not shift to the operation after T02. 2nd. At T02. When the release is permitted, the motor is first applied with a voltage in the CW direction. The CW direction is a rotational direction in which any of the power systems can be driven in the above-described conceptual diagrams and the like.

Since the initial position of the clutch portion is a shutter / mirror system, the rotation of the motor from T02 is transmitted to the SM cam gear 58 and is integrated with the shutter charge cam portion 58b (charge cam) and the mirror drive cam portion 58a. (Mirror cam) respectively. T
At the moment when the motor is turned on at 02, the camera is on standby in a state where charging of the shutter is completed. Therefore, in order to detect the phase of the SM cam gear 58, the timing gear 59 and the timing board 60 meshed with the SM cam gear 58. Change the state of the two switches formed as follows.

First, at T02, the timing SW charge (hereinafter, SCSW) is on, and the timing SW mirror (hereinafter, MUSW) is off. The SM cam gear 58 rotates, and the charge cam moves down to the bottom dead center (T0
4). Here, since the SCSW is a SW for determining that the cam is reliably located at the top dead center, the switch is turned off at the timing of T03 before the down of the charge cam starts. The mirror cam starts lifting almost at the same time as the charge cam goes down. The mirror continues to rise and reaches the top dead center at T05.

That is, at this point, the mirror is retracted from the photographing optical path and exposure is possible. Immediately after T05 when the actual mirror ascent is completed, the MUSW turns on (T06), and it is possible to determine the end of mirror driving. T0
Upon receiving 6, the motor stops. Actually, in order to stop the motor at high speed and accurately, at the time of stop, a control in which the reverse rotation brake and the short brake are combined is performed. Here, it is assumed that the motor is stopped after a short time from T06 by a slight overrun. . Of course, this overrun is sufficiently narrow with respect to the top dead center range of the mirror cam. Exposure is performed when the motor stops.

In the timing chart, since T07 is a motor start for mirror down, the exposure is T06.
And the process is completed between T07 and T07, but the description is omitted here. However, the method of controlling the timing of turning off the magnets of the front curtain and the rear curtain that are attracted by the shutter unit to form the necessary exposure time is not different from the known system. When the exposure is completed, T07, at which the mirror-down operation is started, corresponds to the start, and the same SM cam gear as the power system driven at the time of mirror-up is rotated.
What is necessary is to perform W rotation.

When the cam starts to rotate, the MUSW is turned off at T22. Since the MUSW reliably detects the mirror up state, the mirror cam top dead center T05
It is configured such that T06 to T22 are included in the range from to T23. The mirror cam starts descending at T23 and returns to the normal 45 ° down position at T09. Here, in this embodiment, in order to minimize the number of sensors, the timing of mirror down completion is not detected. Therefore, in terms of control, a certain timer is started from T22, and the motor is stopped at T08 at the set time, thereby performing the mirror down.

Although the timing of T08 is set slightly before T09, a timer is set to ensure the state of T09 when the motor is stopped due to overrun of the motor.

With the above description, a series of operations from release to mirror up, exposure, and mirror down has been completed.

In this embodiment, winding is performed next. Since the drive system is different for hoisting, clutch switching is required. T10 is the start of clutch switching, and the CCW rotation of the motor starts. Thus, the clutch cam 42, which has been locked at the charging position, rotates to the winding position. Although the clutch lever 47 is also lifted by the cam 42, the output of the clutch photo-interrupter is low because the shutter mirror system was locked at the start timing of T10. When the clutch lever 47 is lifted by the rotation of the motor, the output of the photointerrupter goes from the L level to the M level and goes to the H level. The fall timing after this H level range means the transition to the next locking surface.

Since the output level of the hoisting system is at the M level, the clutch lever 47 following the cam down causes the photo interrupter to output the M level at T11. As a result, the motor is stopped, but there is a slight overrun, so that the clutch cam 42 is slightly rotated to the rewind side, and the clutch lever 47 is not in contact with the locking surface. T11
Thereafter, at T12, the motor starts CW rotation. This C
In the W rotation, first, the clutch cam 42 is brought into contact with the locking surface of the hoist, and the hoist is driven as it is.

That is, the spool starts rotating in the winding direction from T13. In the present embodiment, a photoreflector (feed PR) is used for film feed amount detection (feed detection), and a method of directly counting film perforations is used. Accordingly, perforation of one frame, that is, an output of eight pulses is output from the feed photoreflector. The first pulse from T12 is T14, and the rising of the photoreflector output is sequentially counted. When the eighth pulse is determined at T15, the motor stops immediately.

Incidentally, in order to stabilize the stopping accuracy of the film, the driving system is actually controlled before counting the eighth pulse, but the details are omitted here. With the winding of one frame, the preparation for the next photographing was completed on the film side.

Finally, the shutter is charged to complete a series of operations. First, at T16, the motor returns to CC
Perform W rotation. This time, the operation is switching from winding to a shutter / mirror system.

The stop timing is determined based on the output of the SCPI in the same manner as described above.
The level is output. Of course, if the motor is rotated CW here, the film will be rewound. Therefore, the determination unit passes this M level and makes the CW rotation continuous.
As a result, the clutch lever performs the second lift and causes the SCPI to output the L level at the timing of T18. However, since the clutch cam 42 is rotated upward by the amount of overrun, it does not come into contact with the locking surface.

The motor starts CW rotation from T19. By this rotation, the clutch cam 42 is moved to the shutter
The SM cam gear 58 is rotated while hitting the mirror position. The SM cam gear 58 has been rotated until the mirror is down by the operation before winding, and the cam moves to the charging area of the charging cam. The shutter is charged by the charging cam, and the shutter charging is completed at the timing of the top dead center T20.

Since it is the charge SW that determines the completion of charging of the shutter, the switch is turned on at T21, which is slightly delayed from T20. Upon receiving this determination, the motor stops immediately. Of course, the overrun amount at this time is sufficiently narrow for the top dead center range of the charge cam and the SCS
It is configured to be sufficiently narrow with respect to the ON range of W.

With the above sequence, the preparation for the next photographing is completed, and the sequence for the normal photographing is completed.

Now, in the timing chart of FIG.
The principle of detecting the absolute position using the fact that the direct output of the CPI changes between a low level and a high level has been described. However, actually, the output of the SCPI is determined by the CPU via a processing circuit or the like. The circuit configuration will be described below in detail.

FIG. 47 is an electric circuit diagram showing the structure of the electric circuit of the position detecting mechanism in the camera.

In FIG. 47, reference numeral 191 denotes a clutch lever,
Reference numeral 192 denotes a photo interrupter SCPI for detection, and reference numeral 194 denotes an LED built in the photo interrupter 192.
A current source 193 for switching the current flowing through the LED 195 to change the brightness of the LED 195, and a resistor 193 for converting the photocurrent of the phototransistor 196 into a voltage.

Next, the position detecting method will be described.

As described with reference to FIGS. 38 to 41, when the motor performs the switching operation, the clutch lever 4
7 moves. At this time, the moving part of the clutch lever 47 moves in the concave detecting part of the photo interrupter 192. At this time, in the moving part of the clutch lever 47, the Xd, Xe and Xf parts shown in FIG. 42 reciprocate.

Xd, Xe, X of the clutch lever 47
Since the portions f have different transmittances, an output signal corresponding to the transmittance is obtained. That is, when the photointerrupter 192 (SCPI) corresponds to the light shielding portion Xd of the clutch lever 47 as shown in FIG. 48, the level of the output signal becomes V1.

Also, the semi-transmissive portion Xe of the clutch lever 47
When the photo interrupter 192 (SCPI) corresponds to the above, the output signal level is V2, and when the photo interrupter 192 (SCPI) corresponds to the entire transmission portion Xf of the clutch lever 47, The level of the output signal becomes V3.

In the present embodiment, the movement of the clutch lever 47 is controlled by the photo interrupter 192 (SCP).
Explaining which part of the clutch lever 47 corresponds to I), Xd → Xf → Xe → Xf → Xe → Xd is 1
It works as a cycle. Therefore, the clutch lever 47
When the is operated, the output signal waveform is as shown in FIG.

Here, when the initial position is detected, L
When the current flowing through the ED 195 is adjusted to an appropriate value, a waveform of an output signal as shown in FIG. 50 is obtained. At this time, by detecting the falling portion from the output level V'3 to V'1, the clutch lever 47 is detected.
At the initial position.

Next, when detecting states 2 and 3,
The LED current is adjusted again so that an output signal waveform as shown in FIG. 51 is obtained. V3 of this signal waveform
By counting the fall from "" to V2 ", the position of the clutch lever can be detected.

The state detection mechanism of this embodiment, the structure of the camera to which the embodiment is applied, and the position detection mechanism have been described in detail. Next, the sequence of the entire camera will be described with reference to flowcharts.

For the description, reference is made to the flowchart of FIG. 52 and subsequent FIG. 45 which describes the circuit blocks.

First, the flowcharts shown in FIGS. 52 to 76 will be described.

The flowcharts shown in FIGS. 52 to 76 show the main flow. Hereinafter, description will be made sequentially.

Steps S1 to S38 show a power-on reset process. The power-on reset operation when the battery is turned on is sequentially executed from step S1.

First, in steps S1 and S2,
The interrupt permission level of the CPU 120 is set. next,
In step S3, an interrupt is prohibited so as not to interrupt by noise. In step S4, a stack pointer of the CPU 120 is set. Next, in step S5, the CPU
Set 120 machine cycles.

Next, in steps S7 to S12, the RAM area inside the CPU 120 is cleared to "0", and in step S13, the input / output of the port and the output state are set. Next, in step S14, if
Turning on activates the interface IC 138. Also, in step S15, the CPU 120 reads the data by the adjuster and performs the processing corresponding to each version.
Is set in the RAM.

At steps S16 and S17, L
Initialize the port for the CD 136, and execute step S1.
At 8, it is determined whether an adjuster (not shown) is connected,
If connected, communication processing with the adjuster is performed in step S19.

In steps S20 to S23, the operation SW state is read, and in step S24,
A communication check with the EEPROM 135 is performed, and if the data is abnormal, the camera operation is locked. Then, in a step S25, the data of the EEPROM 135 is
In step S26, the data is read and expanded in the RAM
Then, the temperature is measured.

In steps S27 and S28, it is determined whether or not the strobe light emitting unit 174 is up. If the strobe light emitting unit 174 is up, the flag F_ST is set.
CHRG is set to "1" to request strobe charging. In steps S29 to S32, the power SW
When (PWSW) 153 is turned on, the power-on state is set. Flags F_TSYS1, F_TSY
The meaning of S0 is as shown in Table 1 shown in FIG.

When the camera is in the power off state,
When the flag F_TSYS1,0 is 00 at 00, the LCD display of the camera is turned off. At low power consumption, the values are 0, 1, respectively. During LCD display, they are 1,1, respectively.

In steps S33 and S34, when the back cover is open from the open / closed state of the back cover, F_BK
The OPN flag is set to "1", and in step S35, an abnormal state is returned to a normal state in preparation for the case where the battery is removed during the mechanical operation of the camera in the mechanical processing (certified by the flowcharts shown in FIGS. 133 to 137). Put it back once.

In step S36, the flash mode of the camera is returned to the initial state. Auto strobe (AUTO),
In the red-eye reduction strobe mode (AUTO-S), the strobe mode is left as it is, and in all other strobe modes, the auto-strobe mode (AUTO) is set.

At step S38, the LCD display time is set. After step S39, the main sequence while the batteries are inserted is configured.

Steps S39 to S87 show the transition processing of the CPU 120.

In step S39, if the power is off, the process jumps to step S81 to perform power off processing. If the power is on, L is set in step S40.
It is determined whether or not the CD display is on. If the LCD display is off, the process jumps to step S57. If the display is on, the port being displayed is set in step S41.

In step S42, data for LCD display is set, and in step S43, data is set in step S42.
The display on the LCD 136 is performed based on the data set in step (1). In step S44, the back cover switch (B
KSW) 155 if it is open or closed, or step S48.
Jump to

In step S45, interrupts are once prohibited, and
In step S46, the interrupt permission and inhibition levels during LCD display are set. In step S47, an interrupt is permitted. In step S48, the process proceeds to step S88 while the strobe is being charged, to step S49, step S50.
Indicates that the remote controller is in a standby state, the remote controller is being released, and the process proceeds to step S88.
The ports on the common side (Sig143 to Sig145) are output at “L” level so that they can be raised by the operation switch during EP.

After the interrupt is once prohibited in step S52, the SLE of the CPU 120 whose back cover is open is opened in step S53.
The interruption permission prohibition level during EP is set, and in step S54, interruption is permitted. And step S
In the case of 55, when the patrone of the film is groomed while the back cover is opened, static electricity is passed through the DX contact piece 158 (DXSW).
SLEEP to prevent CPU 120 from running away
State.

In step S56, the key read common port (Si
g143 to Sig145) are returned to the “H” level output.
In step S58, the LCD display is turned off, and in step S59, the port of the CPU 120 is set for low power consumption during SLEEP. Next, in step S60,
The interrupt branch is prohibited, and in step S61, the permission prohibition level of the interrupt while the display is off is set.

In step S62, the machine cycle is delayed to reduce the power consumption of the CPU 120. And
In a step S63, the CPU 120 is set to the SLEEP state, and in a step S65, the machine cycle of the CPU 120 is set to the highest speed. Next, in step S66, SLE
When the rising from the EP is the power SW 153 and in step S67, the back cover SW 155 (BKSW)
And in step S68, the rewind button 160
(RWMSW) and the switch 121 on the key matrix
If it is ~ 133, the process jumps to step S70.

In step S69, if the timer is a timekeeping timer, the flow jumps to step S87; otherwise, the flow jumps to step S88. In step S70, the mode display switching prohibition flag is set to "1". And
In step S71, the operated flag for updating the display time by operating the button is set to "1", and step S7 is executed.
In step 2, a port is set.

In the step S73, the interface i
c138 is activated, and in step S75, display data is set. In step S76, LC
The D display is turned on, and in steps S78 to S79, a charging request is made when the strobe light emitting unit 174 is in the pop-up state.

In the step S81, the LCD display is turned off. In step S82, the port is set to the power off state. In step S83, the interrupt branch is prohibited.
In step S84, permission / prohibition of the interrupt level in the power-off state is set. In step S85, the CPU
120 is set to the STOP state. In step S87, C
A rising flag indicating that the PU 120 has risen from SLEEP or STOP is set to “1”.

In steps S88 to S93, it is determined whether or not the switches SW have been operated. If the switches have been operated, the operated flag is set to "0" and the LCD display timer is updated. Further, in the self-timer mode of step S94, while the remote controller is waiting, the interface ic 138 is set to the mode for receiving the remote controller in step S95, and the remote controller circuit is turned on in step S96.

If the adjuster is connected in step S97, communication with the adjuster is performed in step S98. In step S99, the display timer is counted. If the counter overflows in step S100, the process proceeds to step S101; otherwise, the process proceeds to step S11.
Jump to 3.

In step S101, if the counter overflows while LCD display is off (about 4 hours), CP
Step S110 so as to bring U120 into the STOP state.
Indicates the F_PWRON flag, and step S111 indicates the F_TS.
In step YS0, all the F_TSYS1 flags are set to "0".

In step S102, if the counter overflows while waiting for the remote controller (about 18 minutes) or if the counter overflows when the remote controller is not waiting (about 30 seconds) in step S103, the end of the LCD display time is terminated. In other words, in step S106, a timer is set for counting the timer while the LCD display is off. In steps S107 and S108, F-TSYS1 is set to "0" to indicate that the display is off, and F_TSY is set.
S0 is set to "1".

At step S109, the flag F-MODSLF is set to "0" to cancel the self mode, and the routine jumps to step S39.

In step S113, the change and state of the key are detected, and the power SW 153 (PWSW) and the panorama S
W154 (PANSW), back cover SW155 (BKS)
W), pop-up SW 159 (PUPSW) and rewind SW 160 (RWMSW) are detected. Step S11
If the button is not pressed at 4, the process jumps to step S217.

Steps S115 to S132 show processing when the rewind button RWMSW160 is pressed.

In steps S115 and S116, if the rewind button 160 is not pressed,
Jump to 133. Step S117, Step S
At 118, if rewinding has already been completed, the process jumps to step S133. F_CNTT0,1 is a flag indicating the state of the film, and the meaning is shown in Table 2 of FIG.

Here, Table 2 will be described.

This function automatically feeds the film when the camera is loaded with the patrone and the back cover is closed. If the film is not wound up properly, the auto load fails.
Both F_CNTT0,1 become "0".

When the film is correctly wound and ready for photographing, auto loading is completed, F_CNTT0 is set to "1",
_CNTT1 becomes "0". Indicates that the film is wound one frame at each shutter release. The film end is detected during the winding of one frame, and when the film is rewound, rewinding is performed. F_CNTT0 is “0”, F_
CNDTI becomes "1". Rewinding is completed when it is detected that all the film has been wound into the patrone during rewinding. F_CNTT0 is “1”, F_CNTT
1 becomes "1".

In step S120, the flag for which the button was operated is set to "1". In step S121, when the back cover is open, no rewinding is performed, so that the flow jumps to step S133. In step S122, initial settings for mechanical drive are performed. Contents include interrupt branch prohibition, port setting, strobe charge interruption, battery check, DC
/ DC is on. In step S123, the initial position of the clutch is determined. In step S124, the clutch is switched to the rewind position.

At steps S125 and S126, F-CNTT0,1 is set during rewind. In step S127, F-CNTT0,1 is EEPRO
It is stored in M135. In step S128, the motor is driven to rewind the film. In step S129, the rewind result is set in the F-CNTT0,1 in the subroutine of rewind in step S128, and the result is stored in the EEPROM.

In step S130, the process jumps to step S133 because the mirror is inadvertently moved up and down and does not collide with the lens frame because the lens is collapsed while the power is off. In step S131, the sequence clutch is moved to the mirror position (that is, the initial position) during power-on, and in step S132, the clutch lever is driven to the locking position of the clutch cam and stopped by performing a shutter charging operation (from FIG. 18). 19).

Steps S133 to S164 are performed in
The processing of the back cover SW155 (BKSW) is shown.

In step S133, if there is no change in the back cover SW155, the process jumps to step S165.
If there is a change in the back cover SW155, the process proceeds to step S1.
At 34, the operated flag is set to "1". Step S
At 135, if the state of the back cover SW155 (BKSW) is "1", this indicates that the back cover has been changed from open to closed, so that the process jumps to step S154 to perform auto loading. If the value is "0", it indicates that the back cover has been changed from the closed state to the open state, and the operation for removing the film from the drive system for winding and rewinding so that the film may be pulled out is as follows. Do.

At step S136, initial setting for mechanical drive is performed. In step S137, the film state flag is set to "0", and in step S138, the EEPROM
135. Step S139, Step S14
At 0, the state of the back cover open is stored in the EEPROM 135. In step S150, the back cover open state flag is set to "1".
To

In step S151, the sequence clutch is set to the mirror position (initial position), and is wound up and released from rewinding. In steps S152 and S153, during power-on, shutter charging is performed and the clutch cam is driven and stopped at the locking position. Jump to step S165. Do nothing during power off.

At step S154, initial setting for mechanical drive is performed.

In steps S155 and S156, the back cover closed state is stored in the EEPROM 135. In step S157, the back cover open state flag is set to “0”. In step S158, the clutch is set to the initial position, and in step S159, the sequence clutch is set to the winding position. In step S160, the film is fed idly to prepare for shooting. The success / failure result of the idle feeding is output to F_CNTT0,1. The result is stored in the EEPROM 135 in step S161.

In step S162, during power-on, the sequence clutch is moved to the mirror position in step S163, and shutter charging is performed in step S164 to set the clutch cam to the locked position.

Steps S165 to S172 show a pop-up process of the strobe light emitting section.

In the step S165, the pop-up SW
If there is no change in 159, the process jumps to step S173, and if there is a change, the flag operated in step S166 is set to "1". In step S167, if the status of the pop-up SW 159 (PUPSW) is "0", it indicates that the strobe light emitting unit has been raised, and the process jumps to step S170. If it is "1", it indicates that the light emitting portion of the strobe light has been turned down, so that step S
At 168, the flash charging request flag is set to "0" to prohibit charging.

In step S169, the flash mode is turned off, and the flow jumps to step S173. In step S170, the flash charging request flag is set to "1".
To allow charging. In step S171, the flash mode off mode is released. In step S172, the spot metering mode is canceled, and the process jumps to step S173. Steps S173 to S206 show a process of turning on / off the power SW 153 (PWSW).

In the step S173, the power switch 153 is turned on.
If there is no change in (PWSW), the process jumps to step S113. In step S174, the power SW 153
When the state of (PWSW) is “1”, the power SW 153
Is turned on → off, the process jumps to step S207. In step S175, initial setting for mechanical drive is performed, and in step S176, the EEPROM 135 is set.
Data check.

[0279] In step S177, the EEPROM 13
The contents of No. 5 are expanded in the RAM of the CPU 120. In step S179, the initial position of the clutch is determined. In step S180, the zoom retracting flag is set to "0", and in step S181, the data is stored in the EEPROM 135. In step S182, the zoom is driven to the wide position. In step S183, the number of zoom drive pulses is converted into a zoom encoder value, and in step S184, an open aperture value is calculated from the zoom encoder value.

In the step S185, the lens retracting flag F-LNSSNK is set to "0", and in the step S18
In step 6, the data is stored in the EEPROM 135. Step S18
In step 7, the number of pulses for extending the lens from the optical infinity position is obtained. In steps S188 and S189, the lens is driven to the ∞ position. In step S190, all of the operation switches 121 to 133 are once read in a pseudo manner to initialize the internal RAM.

At step S192, the flash mode is reset. AUTO except AUTO, AUTO-S
To In steps S193 and S194, A
Initialize the E mode to enter the program mode. In step S195, the spot metering mode is cleared.
In step S196, the self mode is cleared. In step S197, the remote control release flag is cleared. In step S198, the release lock flag is cleared. In steps S200 and S201, the flash charging time counter is reset.

In step S202, the charge voltage monitoring data is cleared. In step S203, a power-on flag is set, and in steps S204 and S205, LCD display flags F-TSYS0, 1 are set. In step S206, a display time timer (about 30 seconds) is set, and the process jumps to step S113.

[0283] Steps S207 to S216 are as follows.
The process of turning on / off the power SW 153 (PWSW) is shown.

[0284] In step S207, initial settings for mechanical drive are performed. In step S208, one of the lens groups is extended from the optical infinity position to the side closer to the predetermined number of pulses so that one of the lens groups and the two lens groups do not interfere with each other when the lens barrels are collapsed. In step S209, the lens retracting flag F-LNSSNK is set to "1", and step S209 is performed.
At 210, it is stored in the EEPROM 135.

In step S211, each lens frame is retracted by the zoom motor 146 so as to be in the retracted position (FIG. 1). In step S212, the zoom retract position flag F-
ZMSNK is set to “1”, and in step S213, EE
It is stored in the PROM 135. In step S214, the power-on flag is set to "0", and in steps S215 and S216, F-TSYS0 and 1 are set to power-off, and the process jumps to step S113.

In steps S217 to S226, the battery is removed during rewinding or the power SW 153 (PW
SW) is turned off → on or turned on → off, and the rewinding is resumed when the rewinding is temporarily stopped.

In steps S217 and S218, if F_CNTT0,1 is not being rewinded, the process jumps to step S227. In step S219, mechanical drive initialization is performed. In step S220, the initial position of the sequence clutch is determined. In step S221, the sequence clutch is switched to the rewind drive system.

At step S222, the film is rewound. In step S223, the rewind result F
-Store CNDT0,1 in EEPROM 135. If it is determined in step S224 that the power is on, the process proceeds to step S224.
At 225, the sequence clutch is switched to the mirror position,
In step S226, shutter charge is performed, and the clutch cam is driven to the locked position.

Steps S227 to S232 are processing for locking the operation of the camera by operating the buttons. The processing is performed when the film has failed to be fed at an idle time, when rewinding has been completed, or during power-off.

In step S227, when F_TSYS1 is "0", the power is off or the LCD display is off, so that it is not necessary to proceed any further, so the flow jumps to step S39. In step S228, when F_CNTT1 is "1", rewinding is in progress or rewinding is completed, and the process does not proceed. Therefore, the process jumps to step S39 to form a main routine loop. In step S229, F_CN
If DT0 and DT1 are both "0" and the auto load has failed, and if the back cover is closed in step S230, DX is executed in steps S231 and S232.
The presence or absence of a cartridge is detected from the contact piece 158 (DXSW), and the presence or absence of the cartridge is confirmed. If there is a patrone, the button operation is locked, and the process jumps to step S39.

If the flash charging request flag is "1" in step S233, flash charging is performed in step S234. In step S235, switch group 0 (121 to 126) is detected. SWs to detect are release SWs 121 and 122 (R1SW, R2SW),
Zoom up SW123 (ZUSW), Zoom down S
W124 (ZDSW), Self SW125 (SELFS
W) and a spot SW 126 (SPOTSW).

Step S239 to step S252 are 1
This is the process when the 26 spot button (SPOTSW) is pressed.

At step S239, switch group 0
If there is no change in any of the switches, step S253
Jump to In step S240, the spot SW1
If there is no change in 26, the process jumps to step S253. In step S241, the operated flag is set to “1”.
To

At step S242, since the spot mode is not accepted in the night scene mode, the process jumps to step S251. In step S243, since the spot mode is not accepted during the flash pop-up, the process jumps to step S251. When the spot mode is already set, the process jumps to step S251 because the spot is released.

At step S245, the interrupt branch is prohibited. In step S246, the flash charging is interrupted. In step S248, the spot mode flag is set to "1" to set the spot mode, and in step S249
Then, the F_SPLOCK flag is set to "0", and in step S250, spot metering is performed by the autofocus sensor, and the process jumps to step S252.

At step S251, the spot mode flag is set to "0". In step S252, the LED 143 indicating the spot mode in F is turned on / off in the spot mode. In step S253, the process jumps to step S264 while the release of the remote control is being performed, and to step S264 when the release of step S254 is half-pressed (only the RISW 121 is on).

Steps S255 to S260 show processing when the release button 121 is not pressed.

In step S255, flags related to autofocus calculation are initialized. Step S2
In 57, when the completion of integration of the AFIC 134 is detected, data is read from the AFIC 134, the defocus amount is calculated, and the number of lens drive pulses is calculated. Step S2
In 59, F-RELEND becomes "1" after the shutter release, and is cleared by a flag that detects that the 121 release button is pressed after the shutter release. In step S260, the F-AECMPL clears this with a flag that detects that photometry has ended, and proceeds to step S2.
Jump to 64. In step S264, when it is detected that the release button 121 is pressed after the shutter release, the process jumps to step S355 to lock the release.

Steps S266 to S281 show the photometric processing.

In step S266, if the photometry has been completed once (F-AECMPL flag is "1"), AE
In order to lock, the process jumps to step S282 to prevent photometry again. In step S267, the interrupt branch is prohibited. In step S268, the flash charging is interrupted. In step S271, the DX code of the cartridge is read, and in step S272, the DX code is converted into an SV value.

In step S273, the photometric SPD 17
A split photometry with 0 is performed. In step S274, a BV value is calculated from the photometric A / D value. In step S275, an average photometry operation is performed. In step S276, an evaluation photometry operation is performed. In step S277, a backlight determination is performed. In step S278, an EV value is calculated from the BV value and the SV value, and the AV value, the TV value,
A flash emission guide number value is calculated, and a flash emission request flag is set.

In step S281, F_AECMPL
Is set to "1" to indicate the end of photometry. Step S282,
The first time of the remote control release in step S283,
At the first time when the release 121 is half-pressed in step S284, the operated flag is set to "1" in step S285.

Further, step S286, step S27
In step S8, if there is a light emission request according to the photometry calculation result, a flash charging voltage check is performed in step S287.
As a result, if the voltage has reached the light emission enabled voltage, the flash light emission enabled flag F_FLSEN is set to “1”. In step S288, if light emission is possible, the process jumps to step S290. If light emission is impossible, the flash charging request flag is set to "1".

At steps S290 and S291,
If there is a request for strobe light emission and if light emission is not possible, priority is given to strobe charging, and the process jumps to step S296 without performing the autofocus operation. Step S29
In step 3, the strobe charging request flag is set to "0". In step S294, strobe charging is interrupted. In step S295, autofocus calculation and lens driving are performed. At the time of focusing, the focusing flag F_iNFOCUS flag is set to “1”. When out of focus, out of focus display flag F_A
Set the FNGDSP flag to "1". When the integration of the AFIC 134 is not completed, the process returns from the subroutine without doing anything.

In step S296, at the time of flash emission,
Alternatively, an LED 14 in the viewfinder displays the state of charging the strobe and the result of focusing / defocusing after the auto focus operation.
3 is turned on or blinked to display. Step S2
In step S98, the process jumps to step S300 when the remote control is released, and in step S299, when the release buttons 121 and 122 are not fully pressed, the process jumps to step S355.

Steps S300 to S306 are processing for determining whether or not shutter release is possible.

In step S300, F_AFCMPL
Is "0", since the photometry has not been completed, the flow jumps to step S355 without going to the shutter release. In step S302, when F_iNFOCUS is "0", since the camera has not been focused yet, the process jumps to step S355. In steps S303 and S304, if there is a flash emission request and the flash charging voltage has not reached the flashable voltage, the release timing is missed, and the remote control release flag is set to "0" in step S305 so as not to release. I do. In step S306, the F-RELEND flag is set to "1" so that the release lock is performed until the release button is released once.
Jump to 355.

In step S307, since the process proceeds to the shutter release, the LED 143 in the viewfinder is turned off.
In step S308, the interrupt branch is prohibited. In step S309, a battery check is performed. In step S310, the DC / DC converter is driven, and the process jumps to step S311.

Steps S311 to S339 show the delay time processing at the time of the self-timer or the remote control release. When the self-timer is used, the shutter release is performed 12 seconds after focusing, and when the remote control is used, the shutter release is performed 2 seconds after the focus is performed. Do.

In step S311, when the mode is not the self mode, the process jumps to step S340. Step S3
In step 12, the process jumps to step S332 in order to make a delay time of 2 seconds when the remote control is released. In step S313, X is detected in order to detect the power SW being turned off.
The power SW ON state data is input to the R6 register.

At step S314, the rewind SW 160
Rewind SW to the XR5 register to detect ON of
160 off state data is entered. Step S315
Then, in order to keep the self LED 170 on for 10 seconds, data for 10 seconds is set in the timer, and the blinking flag F_2 Hz is set to “0”. Step S
At 316, a switching flag F-UTY of 10 seconds / 2 seconds is used.
0 is set to “0”. In step S317, FU
When TY0 is "0", self-L
In order to light the ED 170, the process jumps to step S319. When F_UTY0 is "1", the remaining two seconds are indicated, and the self LED 170 is caused to blink at a cycle of 2 Hz.

At step S318, a blinking flag F-
If 2 Hz is "1", in step S319, the self-LE
D170 is turned on, and if "0", step S319b
Then, the self LED 170 is turned off. Step S32
In step S0, the switch 0 group is read, and step S
If the self SW 125 is turned on at 321, it is determined that the self timer is stopped, and the process jumps to step S 338.

At step S322, the power switch 153
Is read, and the result of step S323 is the power S
If W153 is off, the process jumps to step S338.
In step S324, the rewind SW 160 is read. If the result of step S325 is that the rewind button 160 is on, the flow jumps to step S338. Step S32
In step 6, one group of switches 127 to 132 is read, and if there is no change in any of the switches in step S327, the process jumps to step S329 to continue the processing.

In step S328, the program SW1
If it is determined that 31 (PSW) has been pressed, the process jumps to step S336 to interrupt the process. Step S32
At 9, the timer value set in advance is monitored, and if an overflow occurs, the F_TiMCNT flag is set to "1". In order to generate a further 2 Hz blinking cycle, the timer value is read and the F-2H is read every 250 ms.
A process of inverting the flag of z is performed.

At step S330, F_TiMCNT
Is "0", the process jumps to step S317. F_T
If iMCNT is "1", the timer has overflowed, and thus the set time has expired. Step S3
At 31, if F_UTY 0 is “0”, it means the end of the time measurement for 10 seconds, and the process jumps to step S 332 to perform the process of time measurement for 2 seconds. If F_UTYO is "1",
Since this means the end of the time measurement for two seconds, the process jumps to step S334 to shift to the shutter release.

[0316] In step S332, data of 2 seconds is set in the timer value. The F_2Hz flag is reset to "0". In step S333, "1" is set in F_UTY0 to indicate that two seconds are being counted, and the process jumps to step S317.

In steps S334 and S335, the shutter release by the shutter release button in the self mode releases the self mode, but the self release does not release the shutter release by the remote control in the self mode. In step S336,
The self LED 171 is turned off, and the camera is reset in step S337. It clears the self mode, releases the remote control release, initializes the AE mode, initializes the strobe mode, and drives the lens to the optical infinite position.

In step S338, the operated flag is set to “1”, and in step S339, the self LED 171 is set.
Is turned off, and the routine jumps to step S345. In step S340, the self LED 171 is turned off.

In step S341, shutter release processing (described with reference to the flowcharts shown in FIGS. 80 to 83) is performed.

In step S342, F_RELEND
The flag is set to "1" and the release lock is set until the finger is released once from the release button. In step S343, F_
MODSPT is set to “0” to reset the spot mode. In step S344, the operated flag is set to "1". In step S345, F_RMC2R
The flag is set to "0" and the remote control release flag is cleared.

At step S352, F_STCHRG
Set the flag to "1". The flash charging request flag is set to “1”. In step S353, AFic134
Is reset to start autofocus integration.
In step S354, 2 Hz is used to display the LCD 136 and blink the LED 143 in the viewfinder.
Set the timer to keep time.

In steps S355 to S357, the first flag of the remote control signal is set to "0" at the point where the signal has passed through the main loop twice so that an interrupt of the remote control signal may enter anywhere in the main loop.

Steps S358 to S376 show processing of the zoom buttons (ZUSW) and (ZDSW).

In step S358, since the input of the zoom buttons 123 and 124 is not received while the release 121 is half-pressed, the flow jumps to step S437. Step S3
At 59, F-ZMUP is set to "1" to set the zoom drive direction flag to the tele direction. Step S360
If the zoom-up button 123 (ZUSW) has been pressed, the process jumps to step S363. Step S3
At 61, F_ZMUP is set to "0" to set the zoom drive direction flag to the wide direction. Step S3
At 62, if the zoom-down button 124 (ZDSW) has been pressed, the process jumps to step S363; otherwise, the process jumps to step S377.

[0325] In step S363, the operated flag is set to "1". In step S364, during remote control release (when the F_RMC2R flag is "1"), the process jumps to step S437. In step S365,
Initialize the mechanical drive. In step S366, zoom drive is performed while the zoom buttons 123 and 124 are being pressed. In step S367, F_AECMPL is set to “0” to reset the photometry. In step S368, F_RELEND is set to "0" and release is prohibited while 1R is pressed.

At step S370, the zoom pulse is converted into a zoom encoder value. In step S371,
Open FNo. Is calculated. In steps S372 to S375, in the aperture priority mode, the preset aperture value and the open FNo. And the open FNo.
Is larger than the set value, the open FNo. Insert In step S376, the number of lens drive pulses from the mechanical contact position to the optical infinity position is calculated, and the process jumps to step S437.

In step S377, the switches 121 to
If there is no change in group 0 of step 126, step S38
Jump to 7.

Steps S378 to S386 show the processing of the self switch 125.

If there is no change in the state of the self SW 125 in step S378, the flow jumps to step S437. In step S379, the operated flag is set to “1”.
To In step S380, if the camera is already in the self mode, the process jumps to step S384. Otherwise, in step S381, F_MODSLF is set to "1".
To

[0330] In step S382, the mode of the interface ic138 is set. In step S383, the remote control circuit inside the interface ic138 is turned on, and the process jumps to step S437. In step S384, the self mode is canceled. Step S3
At 85, the remote control release flag is cleared. In step S386, the remote control circuit inside the interface ic138 is turned off, and the process jumps to step S437.

At step S387, the switch groups 127 to 132 are read, and the falling of the switches is detected. Switch to read is pict switch 12
7 to 130, a program SW 131 (PSW) and a strobe mode SW 132 (STSW).

In step S388, if there is no change in the state of the switch groups 127 to 132, step S4
Jump to 21. In step S389, the operated flag is set to “1”. In step S390, the process jumps to step S403 during remote control release. In step S391, if the pict SW 127 has not fallen, the process jumps to step S394. Pict S
If W127 is falling, PC is determined in step S392.
V175 sounds at 2 KHz for 33 msec (see FIG. 140).

[0333] In step S393, the AE mode is set to the pictogram 1 mode, and the flow jumps to step S437. Steps S394 to S402 are for setting the AE mode of Pict 2, Pict 3, and Pict 4.

In step S403, the program SW13
When 1 is pressed, the mode is reset in step S405 after the PCV175 generates a sound in step S404.
The AE mode is in the program mode, the strobe is in the AUTO or AUTO-s mode, the self-release, the remote control release is released, the spot mode is released, and the lens is at the optical infinite position. Then, the process jumps to step S437. If the program SW 131 is not pressed, step S406
Jump to

In step S406, the flow jumps to step S437 while the remote control is being released. If the remote control is not being released, the process proceeds to step S407. Step S407
In step S437, when the strobe light emitting unit is not popped up, the process jumps to step S437. In step S408, when the flash mode switch 132 is not pressed, the process jumps to step S437.

In step S409, if the LCD display is restarted with the flash mode switch 132 while the LCD display is off, the flash mode is not updated, and the process jumps to step S437. In steps S410 to S412, when the strobe mode is AUTO, the strobe mode is set to AUTO-S. Step S41
In steps 3 to S415, the strobe mode is set to AUTO-
In the case of S, the flash mode is set to FiLL-iN. If the flash mode is FiLL-iN in steps S416 to S418, the flash mode is set to AUTO. In step S419, the flash mode is set to EEPR
It is stored in the OM 135.

In step S420, the spot metering mode is set to "0", and the flow jumps to step S437. In the step S421, the falling of the switch group 2 is detected. The group 133 is an aperture priority mode switch (AVSW). In step S422, group 1
If 33 does not fall, the process jumps to step S437.

At step S423, the operated flag is set to "1". In step S424, the process jumps to step S437 while the remote control is being released. Step S4
At 25, if the aperture priority mode SW 133 (AVSW) has not fallen, the process jumps to step S437. If the mode is not the aperture priority mode in step S426, the process jumps to step S431. In step S427, when the LCD display is restarted with the aperture priority mode button (AVSW), the display jumps to step S437 because only the display is performed and the aperture value is not updated.

At step S428, PCV175 is set to 2
The sound is generated for 33 msec at kHz (see FIG. 140).

In step S429, the aperture value is increased by 1 EV, and the minimum aperture, for example, FNo. When it becomes 22 or more, set it to the maximum aperture value. In step S430, EEPRO
The process jumps to step S437, which is stored in M135.
In step S431, the AE mode is set to the aperture priority mode. In step S432, the PCV 175 is sounded.

In steps S433 to S435,
When the aperture value that has been set is equal to the open FNo. If it is smaller than the set F-number, the open FNo. Insert Step S4
At 36, it is stored in the EEPROM 135.

Next, the flowcharts shown in FIGS. 77 to 79 will be described.

The flowcharts in FIGS. 77 to 79 are subroutines for forming a series of shutter release sequences of mirror up, aperture down, shutter release mirror down, aperture open film winding, and shutter charge.

First, in step S500, if there is no strobe light emission request as a result of the photometry operation (F_FLSRQ flag is "0"), the flow jumps to step S508. Also,
In steps S501 and S502, when the strobe mode is not AUTO-S (red-eye reduction mode), or in the stop motion mode (AE mode for a fast-moving subject) in the pictograph mode, go to step S504 in which red-eye reduction emission is not performed. Jump.

In step S503, red-eye reduction pre-emission is performed. In step S504, the power SW 153 may be turned off during red-eye pre-emission.
When W153 is turned off, the process jumps to step S550.

In step S505, the light emitting GNo. Is calculated. In step S506, it is checked whether the charging voltage is a charging voltage at which light emission is possible. In step S507, the charging voltage and the light emission GNo. The flash emission time is calculated from the above. In step S508, the sequence clutch is switched to the mirror position. Step S5
At 09, the printing time of the date module 137 is calculated from the ISO value of the film. In step S510, the number of drive pulses of the stepping motor 151 from the initial aperture position is calculated from the aperture value and the zoom encoder value. In step S511, the excitation of the magnet that attracts and holds the front curtain and rear curtain of the shutter is turned on.

Next, steps S512 to S52
Before explaining 0, the F_UT according to Table 3 shown in FIG.
The relationship between the flags Y3 and Y4, the MiRUP, and the MiRDN subroutine will be described.

The respective subroutines are F_UTY3,
The processing contents can be switched by the flag of 4. When F_UTY3 is set to "1" and the subroutine is CALL, mirror up or mirror down processing is performed. F_U
When the subroutine is called with the TY4 flag set to "1", the operation of narrowing down or opening the aperture is performed, respectively. In this case, if both the F_UTY3 and F_UTY4 flags are set to "1" and a subroutine call is made, two processes can be performed simultaneously with the stop-up of the aperture while the mirror is up or the aperture-down while the mirror is down.

At steps S512 and 513, the F-UT
Y3 and Y4 are both set to "1". Next, step S514
If the drive flag is sequentially set to "1", step S51 is performed to separately perform mirror-up and aperture-down.
At 5, F_UTY3 is set to "0".

Here, in consideration of minimizing the image erasing time, narrowing down is performed first, and then mirror up is performed. Further, the sequential drive flag is set in the aforementioned step S309.
Set by battery check. In other words, the controller checks the battery voltage based on the power supply voltage data written in the EEPROM 135 in advance, and if the power required to simultaneously perform the mirror drive and the aperture drive cannot be supplied, the drive of the aperture and the mirror is separately performed. This is a flag for instructing switching.

In step S516, F_UTY3,4
Mirror up or narrow down according to the contents of In step S517, if the drive flag is sequentially set to "1", the aperture has been narrowed down by MiRUUP in step S516, so that in steps S518 and S519, F_UTY3,4
Is set according to Table 3.

At step S520, MiRUP is called. Next, in step S521, a shutter release process is performed. Next, the shutter time obtained by the photometric calculation in step S278 is reproduced by a timer, the timing of starting the traveling of the front curtain and the rear curtain is obtained, and the shutter is released.

At steps S522 to S530, the mirror is lowered and the aperture is opened. During sequential driving, the mirror is lowered first, and then the aperture is opened.

At steps S531 to S535, the total number of releases is stored in the EEPROM 135.
That is, data stored in advance is read and 1
Is stored in the EEPROM 135.

In steps S536 to S538, it is determined whether to wind the film by one frame. That is, since F-CNTT0 and F-CNTT1 are assigned to the 0th and 1st bits of the 8-bit RAM called D-CNTT, respectively, the determination is made according to Table 2 shown in FIG. Then, only when the auto-loading is completed, the winding operation of one frame of the film is performed.

At step S539, the sequence clutch is switched to the hoisting drive system. Next, step S540
Now, the flag F-OWiND indicating that the film is being wound
Is set to “1”, and in step S541, 35EEPRO
Stored in M.

At step S542, one frame of the film is wound up. In the one-frame winding subroutine, when the film is wound by one frame, 1 is added to the number of film frames. F_C if the film is not wound one frame within a predetermined time
NDT0 is set to "0" and F-CNTT1 is set to "1" to perform rewinding.

At step S543, the sequence clutch is returned to the initial position. Next, in step S544, F
_OWiND is set to “0” to end winding. Then, in step S545, F_OWiND, the film count, F-CNTD0, and F-CNTT1 are
It is stored in the OM 135.

Next, in step S546, shutter charge is performed. Then, in steps S547 to S549, after 100 msec, the excitation of the mirror motor and the stepping motor of the aperture is turned off, and then, in step S55.
Returns 0.

Next, the flowcharts shown in FIGS. 80 to 83 will be described. This flowchart shows the shutter release processing.

First, in step S551, interrupt branch prohibition is performed. Then, Steps S552 to S558
Then, the high speed, the middle speed, and the low speed are determined from the shutter speed, and if the speed is high, F-UTYA is set to "1". If the speed is low, F-UTY9 is set to "1", and the data for which the power SW 153 is on is stored in the XR6 register.

In step S559, the TV value is converted to a timer value convenient for reproducing the shutter time. Then, in steps S560 to S562, the timers 1, 2, and 3 and 4 are initialized.

Next, step S563, step S56
At 4, shutter time is set in the timers 1 and 2,
In steps S565 to S567, the timer values obtained by adding the rear curtain running time at the time of the shutter to the timers 3 and 4 are entered. The timers 1 and 2 are timers for measuring the start of rear curtain driving, and the timers 3 and 4 are timers for measuring the start of mirror down.

Next, step S575 to step S57
7, the adjustment value for correcting the shutter time is set to EEPRO.
Read from M135 and store in R3 and R4 registers.

At steps S578 and S579, timers 1 and 2 and timers 3 and 4 are started, respectively. If the R3 register is "0" in steps S580 to S583, the process jumps to step S584. If not, the R3 register is decremented and repeated until it becomes 0, thereby performing correction to shorten the shutter time.

[0366] In step S584, front curtain running is started. That is, the magnet holding the front curtain 176 by suction is turned off, and the front curtain 176 runs. Also, second curtain 1
The magnet holding and holding 77 is kept on. Next, in step S588, the timers 1, 2
Overflows, since the rear curtain driving has started, the process jumps to step S609.

In step S592, the XSW 174 is not viewed at the time of high speed, and the flow jumps to step S588 in order to make the time reproduction accurate. Step S59
At 6, medium speed seconds, at low speed seconds, interface ic
In consideration of the fact that the register inside 138 falls due to noise, it outputs a signal to turn on the magnet that sucks and holds the rear curtain.

Next, if there is a light emission request in step S597 and the light emission is not completed in step S598 and the XSW 174 is turned on in step S599, then in step S600, in order to eliminate the chattering of the switch, NOP. After this, again,
If the XSW 174 has been turned on in step S601, a strobe light emission is performed in step S602.

In step S603, the light emission completion flag is set to "1". Also, in step S604, F_UTY
When 9 is "0", it is the middle speed second, so step S588
Jump to

Then, in step S605, a software timer of 1 ms is executed, and in step S606, S
ig110 is output. Next, in step S607, the state of the power SW 153 is input, and in step S608, when it is detected that the power SW 153 is turned off, the process jumps to step S609. If the power SW 153 (PWSW) is on, the process jumps to step S588.

Steps S609 to S612 are performed
In the same processing as in steps S580 to S583 described above, a correction is made to prolong the time during which the shutter is open by delaying the timing of starting the rear curtain travel.

In step S613, the magnet holding the rear curtain 177 by suction is turned off, and the rear curtain travel is started. Then, in step S614, when the time is high speed, the process jumps to step S622. Also,
In steps S615 to S621, the medium speed
At the time of the low speed, the XSW 174 may be turned on during the rear curtain driving, so that the strobe light is emitted in the same manner as in steps S597 to S603 described above.

In the step S622, the timer 3,
4, the completion of the rear curtain driving is predicted, and the process jumps to step S614 until the timers 3, 4 overflow.

In steps S626 to S628, timers 1 and 2 and timers 3 and 4 are stopped, and the process returns in step S629.

Next, the flowcharts shown in FIGS. 84 to 93 will be described. This flowchart is a flowchart showing the autofocus operation.

First, steps S630 to S63
In 2, when the AE mode is the landscape or night view mode, the lens is once set to infinity and then the autofocus operation is performed.
If the mode is once infinite or the mode is other than the landscape and night view modes, the process jumps to step S637.

[0377] After driving the lens to the infinite position in step S633, the operated flag is set to "1" in step S634, the once infinite flag is set to "1" in step S635, and further, in step S636, Set the lens infinity flag to “1”. Then, the process jumps to step S740.

In step S637, once the auto focus is completed, the process immediately returns to perform the auto focus lock. Then, the process jumps to step S744. When the contrast is low in step S638, the auxiliary light flag is set to "1" based on the result of the autofocus calculation. And step S
In step 639, when the strobe mode is not off, auxiliary light emission is performed. Otherwise, the process jumps to step S659.

In steps S644 to S645, when the auxiliary light emission count reaches the predetermined number, the flash capacitor is charged once in steps S646 to S651. Then, while the flash is being charged, the shutter is half-released to stop charging and return. Then, the process jumps to step S744.

In step S652, the light emission count of the auxiliary light is increased by one, and in step S653, a charging voltage check is performed. Step S654, step S654
In 655, if the charging voltage has not reached the light emission enabling voltage, the auxiliary light charging is performed. Then, step S65
6. In step S657, when the F_SEK flag is set to "0" and the AFALG subroutine is called, integration of the autofocus sensor is started.

In step S658, light emission of the auxiliary light by the strobe light is performed. Then, in step S659,
If the lens scan request flag is "0", step S
Jump to 675. Next, in step S660, a lens scan operation is performed in which the lens is once moved to a close range and further moved to infinity. In step S661, the lens scan request flag is set to “0” so as not to repeat the lens scan. In step S662, the lens scan completion flag is set to "1".

If it is determined in step S663 that the remote control release has been performed and the result of the autofocus calculation is out of focus, the flow advances to step S665. Otherwise, the flow advances to step S665.
Jump to 740.

In step S665, the lens is set at the infinite position. In steps S666 to S670, EE is set.
The lens is extended to the data position based on the adjustment value of the PROM 135. Then, in step S671, the operated flag is set to “1”. Next, in steps S672 to S674, the focus flag is forcibly set to "1", the autofocus completion flag is set to "1", and the process jumps to step S744.

In step S675, data from the AFIC 134 is read, the amount of defocus is calculated, and in-focus or out-of-focus is determined. When dark, an auxiliary light request is made. Further, the number of driving pulses and the driving direction of the lens are calculated. Next, in step S676,
Since the F-SEK flag remains "1" during the integration, the process jumps to step S744.

In step S681, if the auxiliary light flag is 1, the process jumps to step S689. In step S682, as a result of the autofocus calculation, if the auxiliary light request flag is "0", the process jumps to step S689.

In step S683, the auxiliary light flag is set to "1", and the auxiliary light is emitted when the next subroutine is called. Next, in step S684,
The lens scan flag is set to “0”.

In steps S685 to S687, if the AE mode is the night scene mode and the lens has been scanned, the auxiliary light flag is set to "0". If it is determined in step S688 that the subject is out of focus, step S7 is executed.
If not, the process jumps to step S713.

In step S689, when there is no need for the auxiliary light and the image is out of focus, the process jumps to step S691. If it is determined in step S690 that the auxiliary light is not being emitted, the process jumps to step S713.
If the flash mode is off in step S690b due to out-of-focus during the emission of the auxiliary light, the process jumps to step S691. If the mode is not the strobe off mode, the process jumps to step S744.

In step S691, if the AE mode is the night scene mode, the process jumps to step S694. If the AE mode is the landscape mode in step S692, the process jumps to step S693. Otherwise, the process jumps to step S707.

In step S693, if autofocus cannot be performed even if the focus is infinite, steps S696 to S696 are executed.
In step S698, focusing is forcibly performed. Also,
If it is not infinity, an out-of-focus display is performed in steps S699 to S701, the F_SiNE flag is set to "0", the autofocus operation is continued, and the process jumps to step S702.

[0391] In step S702, F_LSC
The AN flag is set to “0” and the lens is not scanned.
In step S703, the F_SLMPON flag is set to “0”, and the auxiliary light is not emitted.

In step S704, the end of the lens scan is set to "1" so that the lens scan is not performed. Next, in steps S705 and S706, in the case of focusing, the PCV175 is set to 33 ms at a frequency of 2 kHz.
ec vibration, stop for 33msec, further 33msec
Vibrates for c (see FIG. 138) and sounds. Then, the process jumps to step S744.

Next, in step S707, the auxiliary light flag is set to “0”, and in step S708, the lens scan request flag is set to “1”. Then, step S7
In steps 09 to S712, if the lens scan has been completed, the out-of-focus display flag is set to "1". Also,
The lens scan request flag is set to "0", the auxiliary light flag is set to "0", and the process jumps to step S744.

In step S713, the out-of-focus display flag is turned off, and in step S714, when in focus, the PCV175 is sounded in step S719, and the
At 20, the F-SiNE flag is set to "1" and the process jumps to step S744. If out of focus, the F_SEK flag is set to "0" in step S715 to prepare for starting integration at the next subroutine call.

In step S716, the lens infinity flag is set to "0", and in step S717, the lens is driven based on the number of lens driving pulses and the driving direction calculated as a result of the autofocus calculation. Next, step S72
In step 1, if the flag indicates whether or not the lens has actually been driven, and if the flag is "0", the lens has been driven.
Jump to 726.

In steps S722 to S725, since the contact state at the mechanical stopper position is indicated, the lens scan and the out-of-focus display flag for setting the lens scan end flag to "1" to inhibit the auxiliary light are set to "1". Set to "1" and set the lens scan flag request flag to "0"
To set the auxiliary light flag to “0”. Next, in steps S731 to S739, when the close end flag is "1" in the remote control release, the focus is forcibly set, the lens is moved to the close position, and the process jumps to step S744.

[0397] In step S726, the operated flag is set to "1", and in the case of focusing in step S727, the F-SiNE flag is set to "1" in step S728 to terminate the autofocus. Also, in step S729, the F_AFNGDSP flag is set to “0”.
To Then, in step S730, PCV175
Is sounded about twice as in step S706, and the process jumps to step S744.

In steps S740 to S743, processing for resetting the autofocus sensor and starting integration is performed, and the focus flag is set to "0". An AFALG subroutine is called to start the integration reset of the autofocus sensor, and the process returns in step S744.

At step S745, flags related to the autofocus operation are cleared. That is, a lens scan request flag, a lens scan end flag,
Infinity drive end flag, once auto focus completion flag, out-of-focus display flag, lens infinity position flag, PCV
Clear the pronunciation end flag.

[0400] In step S746, the auxiliary light flag is set to "0", and in step S748, the focusing flag is set to "0". In step S750, the auxiliary light count is set to “0”, and the process returns in step S751.

Next, with reference to the flow charts shown in FIGS. 94 to 102, the permission prohibition of the interrupt and the interrupt branch processing will be described.

First, the flowchart of FIG. 94 will be described. FIG. 94 shows the all interrupt prohibition processing.

In steps S752 to S754, a register D_iLR1 for setting an interrupt permission level is set.
3 is set to the lowest interrupt level, and a process for prohibiting branch processing even when an interrupt occurs is shown, and the process returns in step S744.

Next, the flowcharts in FIGS. 95 to 100 will be described. These flowcharts show processing for switching the interrupt function depending on the state of the camera.

First, INTRUN is a state in which the back cover is closed during LCD display of the camera, INTBKKSLP is a state in which the back cover is open during LCD display of the camera, INTS
LP indicates that the power SW 153 is on, the display time has elapsed, and the display is turned off.
W153 shows a state in which the setting of permission / inhibition of the interrupt when the state is OFF, respectively.

Tables 4, 5, and 6 shown in FIG. 158, FIG. 159, and FIG. 160 respectively show the specific setting contents of each of the above states. Tables 5 and 6 are bit maps showing interrupt factors in Table 4. "Key-on wake-up" in the above Table 4 indicates that the CPU 1
Reference numeral 20 indicates a transition from the SLEEP or STOP state to the RUN state, not a branch to a predetermined branch destination by an interrupt. "Wake-up" is interrupted at a predetermined cycle due to overflow of the time-base timer, and the CPU is RU like key-on wake-up.
“Allow” to make N state is interrupted by SLEEP, S
The state changes from the TOP to the RUN state, and further branches to the interrupt branch destination specified in advance. “X” inhibits interrupts.

First, in step S756, all interrupts are prohibited. Next, in steps S757 to S765, an integration completion interrupt level is set, and the interrupt level of the remote control signal is set and permitted in the permission and self mode in the remote control standby state.
Jump to

In steps S766 to S772, an interrupt level for key-on wake-up, an autofocus integration interrupt level, and an interrupt level of a remote control signal in a remote control standby mode in the self mode are set.

In steps S773 to S778, the states of the back cover SW 155, the power SW 153, and the strobe pop-up SW 159 are detected, and the edge detection direction of the interrupt is switched to either rising or falling.

At step S779, a key-on wakeup interrupt permission flag is set. Step S780
In step S782, an interrupt permission flag of the remote control signal in the remote control standby mode in the self mode is set. In step S783, interruption of the time base timer is permitted, and the process jumps to step S806.

In steps S784 to S787, the key-on wakeup interrupt level is set and the interrupt permission flag is set. In steps S788 to S791, the states of the back cover SW 155 and the strobe pop-up SW 159 are detected and the edge of the interrupt is detected. Switches the detection direction.

At steps S792 to S794, an interrupt permission flag of the key-on wake-up switch is set, and at step S795, an interrupt permission flag of the time-base timer is set. Step S7
In steps 96 to S798, an interrupt level for key-on wake-up is set, and in step S799, an interrupt permission flag is set.

[0413] In steps S800 to S803, the states of the back cover switch 155 and the power switch 153 are detected to switch the edge detection direction of the interrupt. In step S804, the interrupt permission flag of the rewind switch 160 is set, and in step S805, the interruption of the time base timer is prohibited.

In steps S806 and S807, the interrupt flag is cleared. In step S809, the serial communication interrupt flag is cleared. In step S810, the AD completion interrupt flag is cleared, and the process returns in step S811. .

Next, the flowchart shown in FIG. 101 will be described. This flowchart shows the remote control signal processing at the branch destination after the interrupt branch by the remote control signal.

First, in step S812, multiple interrupts are prohibited. Then, in step S813, it is confirmed whether or not the interrupt is caused by a remote control signal. If not, the process jumps to step S826.

[0417] In step S814, it is determined whether the port to which the remote control signal is input is at the "L" level.
If not "L" level, the process jumps to step S815. If it is determined in step S815 that the remote control signal has been received and the remote control has been released, the process jumps to step S826. Next, in step S816, if not in the self mode, the process jumps to step S826.

Step S817 is a subroutine for determining whether or not the signal is a remote control signal. If it is determined that the signal is a remote control signal, the F_RMCOK flag is set to “1”. next,
In step S818, if the F_RMCOK flag is "0", the process jumps to step S826.

[0419] In step S819, the F_RMCOK flag is set to "0", and in step S820, the remote control release signal is set to "1". In step S821, the remote control 2R first processing flag is set to "1", and in step S822, the counter flag for executing the main routine at least once is set to "0". In step S823, the photometry end flag is set to "0". Then, in step S824, an integration start signal of the autofocus sensor is output, and in step S825, the operated flag is set to "1". Step S825b
Then, the PCV is sounded.

[0420] In step S826, interruption of the remote control signal is prohibited. In step S827, the interrupt permission level of the remote control signal is lowered to prohibit the interrupt branch. In step S829, the interrupt flag is cleared, and the process returns in step S830.

Next, the flowchart shown in FIG. 102 will be described. This flowchart shows the integration time detection processing at the point where the interrupt branch is made by the integration completion signal of the AFCI 134.

First, in step S831, interruption is prohibited. Next, in step S832, it is confirmed that the signal is an interruption of the integration completion signal of the autofocus sensor. If not, the process jumps to step S843.

[0423] In steps S833 to S835, the contents of the register are saved in the stack area. In step S836, the timer that measures the integration time is temporarily stopped. In step S837, the timer value is stored in the accumulator. In step S838, the timer is restarted. In step S839, the data saved in the accumulator is stored in a predetermined RAM area.

In steps S840 to S842, the contents of the registers saved in the stack area are restored. In step S843, the interrupt flag is cleared, and the process returns in step S844.

Next, FIGS. 141 and 142 will be described. FIG. 141 shows when the LED current of SCPi 147 flows about 10 mA, and FIG.
47 LED current of about 1 mA, C
FIG. 7 is a diagram in which the result of A / D conversion by the PU is plotted on the vertical axis and the rotational position of the sequence clutch cam is plotted on the horizontal axis.

In order to drive the sequence clutch to the initial position, that is, the mirror drive system position, an LED current of SCPi 147 flows about 10 mA as shown in FIG. 141, and the fall is determined by the threshold level 1 at the time of mirror position detection. Is detected and the motor is braked and stopped.

The threshold level 1 in this case is data to be adjusted. When the sequence clutch is driven to the winding position or the rewinding position, as shown in FIG.
An LED current of SCPi147 is passed by about 1 mA to judge by the threshold level 2 at the time of detecting the winding position, the falling is detected, and the winding is performed by the number of falling from the initial position.
Drive to the rewind position. Threshold level 2 in this case
Is data that is adjusted similarly to the initial position.

FIG. 103 is a flowchart showing the adjustment of the threshold level.

First, in step S850, appropriate data is set in advance for Threshold 1 and Threshold 2. Next, in step S851, mirror position driving is performed. If the falling position cannot be detected by the threshold 1 in step S852, the damage flag has been set to "1". Therefore, in step S583, the threshold 1 is moved up and down again, and the operation in step S851 is repeated.

If the mirror position can be correctly driven in step S854, the AD value of the light-shielded portion of the lever is set to AD1.
Store as Next, in step S855, a winding position drive is performed. Next, in step S856, the LED current of the SCPi 147 is switched to the current value at the time of driving the mirror position.

If the AD value is close to AD1 in step S857, it indicates that the value of the judgment threshold is low. In step S858, threshold 2 is reset and the process jumps to step S855.

If the winding position can be detected in step S859, the AD value of the SCPi 147 whose LED current is 10 mA is stored as AD2. In step S860, Threshold 1 is calculated based on the following equation (1).

Threshold 1 = (AD1 + AD2) / 2 (1) Next, in step S861, the maximum value of the AD value at the time of driving the winding position is determined. Further, the AD value at the time of detecting the winding position is stored as AD3. Then, the threshold 2 is calculated based on the following equation (2).

Threshold 2 = (ADMAX + AD3) / 2 (2) Next, in step S862, thresholds 1 and 2 are written to the EEPROM. Then, in step S863,
Finish the adjustment.

Next, the flowcharts shown in FIGS. 104 to 115 will be described.

First, the flowcharts shown in FIGS. 104 to 108 will be described. These flowcharts show the initial drive of the sequence clutch, the drive of the sequence clutch to the mirror drive system position, the drive of the hoist drive system, and the drive of the rewind drive system.

First, steps S871 to S88
Reference numeral 7 denotes an initial setting for causing the flag to identify the sequence clutch switching operation. Table 7 shows the settings. That is, F_UTY0,1 identifies the respective driving of the initial drive system, the mirror drive system position, the winding drive system position, and the rewind drive system position. Further, the processing branch at the time of adjustment is made to correspond to each of the four types of driving by F_UTY2.

[0438] In step S888, the motor is driven,
Initial settings necessary for detecting the Pi signal are performed. Step S
889, in step S890, the sequence branches to step S906 when the sequence clutch initial drive is performed. If the current position data is the mirror position (data is "1") in steps S891 to S893, the flow branches to step S901.

In steps S894 to S895, the identification data is saved in the stack area, and in step S896, the sequence clutch initial drive is performed. In steps S897 and S898,
The identification data is returned from the stack area.

In step S899, if the damage flag is "1", the flow branches to step S934 to shift to end processing. In step S900, initialization is performed again. In steps S901 and S902, when the mirror position is driven, the flow branches to step S934, and the process proceeds to an end process.

In steps S903 to S905, the number of drive pulses from the mirror position at the time of driving the winding position and driving the rewind position is set. The pulse number is set to "1" at the time of driving the winding position, and "2" at the time of driving the rewind position. In steps S906 to S907, the timer for measuring the period for A / D conversion of the Pi signal is set to 1 ms.

At step S908, the sequence clutch switching motor 144 (SCM) is rotated forward to rotate the sequence clutch cam in the switching direction. Step S
In step 909, a 1 ms timer is started. In step S910, the process keeps waiting until the clocking of 1 ms ends. When the F-T2iF flag becomes “1”, 1
The timing of ms ends.

[0443] In step S911, F_T2iF
The flag is cleared, and in step S912, the SCP
A / D conversion is performed on the output signal of i147 to detect the falling of the signal. In step S913, F_GPSD
If the N flag is "1", it indicates that the SCPi 147 signal has fallen. If there is no fall,
Jump to step S917.

[0444] In step S914, F_GPSD
The N flag is set to “0”. In step S915,
The number of drive pulses is reduced by "1". In step S916, when the number of drive pulses becomes "0", the process jumps to step S926 to end the drive. If not “0”, the process jumps to step S917.

In steps S917 to S920, drive time limiter processing is performed. If the processing is not completed within one second after driving the motor, the output signal of the SCPi 147 may be abnormal or the mechanism may be abnormal, so the damage processing is performed and the release lock is performed. If not, the flow branches to step S908.

[0446] Steps S921 to S925 are processes for branching to damage.

First, in step S921, the timer is stopped. In step S922, the sequence motor 144 for switching the sequence clutch is turned off.
In step S923, a damage flag indicating a trouble of the sequence clutch mechanism is set to "1".

In the step S924, during the adjustment, the process branches to the step S934 in order to branch to the damage process and prevent the release lock. In step S926, end processing is performed when a predetermined number of falling edges are counted, and
The brake is applied to the sequence motor 144. The braking method includes a short brake in which both ends of the sequence motor 144 are electrically short-circuited to perform braking, and a reverse brake in which a voltage is applied for a predetermined time in a direction opposite to the rotation direction of the motor that has been conventionally rotated to perform braking. Perform in combination.

[0449] In step S927, the winding position,
At the time of driving the rewind position, the flow branches to step S932.
In step S928, the process branches to step S934 when the mirror position is driven.

[0450] Steps S929 to S931
This shows the processing at the time of initial driving.

First, the flag F_GPSiNi flag indicating that the initial process has been executed once is set to “1”. In step S930, F_U is set to set the position data of the sequence clutch in a process described below.
The TY0 flag is set to "1" to be mirror position data.

At steps S932 and S933, ADMAX is calculated at the time of adjustment. Step S934
From step S936, the position data of the sequence clutch is "1", the winding position data is "2", and the rewinding position data is "3". Step S937, Step S
In step 938, the timer is stopped, and in step S939
To return.

Next, the flowcharts shown in FIGS. 109 and 110 will be described. This flowchart shows an initial setting for driving the sequence clutch mechanism.

First, in step S940, an interrupt disable level is set, and in step S941, a port is set. In step S942, the interface ic 138 is initialized, and in step S943, since another motor may be on, the motor drive circuit is turned off.

[0455] In steps S944 and S945, data is read from the EEPROM 135. In steps S946 to S955, the EEPRO
The data of M135 is expanded in the RAM inside the CPU 120. The XR1 register contains the threshold level for driving the winding / rewinding position. The XR0 register has initials,
A threshold voltage for driving the mirror position and a motor driving voltage for switching the clutch are set in the XR2 register.

In steps S956 and S957, a count value is set in the RRO register for one second.
In steps S958 to S964, the adjustment RAM area is cleared to "0". Step S965,
In step S966, the motor drive voltage of the XR2 register is set to the interface ic138.

In step S967, the damage flag for driving the sequence clutch is cleared. Step S
At 968, the previous data for the SCPi147 signal fall determination is cleared to “0”. In steps S963 to S976, a determination threshold value is set in the R3 register for each driving position. PiLED by driving position
The current value is set in the interface ic138.

In step S977, the SCPi14
7 is emitted. In step S978, the SCP
Wait for the light emission stabilization time of i147 LED. Step S979
In step S98, an A / D conversion port is set.
Return with 0.

Next, the flowcharts shown in FIGS. 111 to 113 will be described. This flowchart is
SCPi147 at the time of sequence clutch switching drive
4 shows a subroutine for A / D converting a signal to detect a falling edge of the signal.

First, in step S981, A / D conversion is performed at a preset port. The A / D conversion result is set in the accumulator. Step S982
, The result of the A / D conversion is stored in the R5 register.
In step S983, after a delay of 100 μsec,
In step S984, A / D conversion is performed again.

In steps S985 to S990, the absolute value of the difference between the results of the two A / D conversions is calculated. In steps S991 and S992, it is determined whether the absolute value is equal to or less than a predetermined value. Considering the voltage value, a difference of 0.06 V or less is detected within 100 μsec. If this difference is larger than 0.06V, it means that the SCPi147 signal is being switched,
Ignore this sampling result.

In steps S993 to S997, it is determined whether the A / D value is equal to or greater than a threshold level set in the R3 register in advance. If the A / D value is equal to or greater than the threshold level, the A / D value is set to “H” level. Judge and F_
The GPi flag is set to "1", and the flow branches to step S1001. If the A / D value is less than the threshold level, it is determined to be at the "L" level, the F_GPi flag is set to "0", and the flow branches to step S998.

In steps S 998 to S 1000, if the previous SCPi 147 output is “L”, the flow shifts to step S 1002; if “H”, the current output is “L”.
Therefore, the falling has been detected. The falling flag F_GPiDN is set to “1”. The F-GPiOLD flag indicating the previous output level is set to "0", and the flow branches to step S1002.

In step S1001, since the A / D converted value is at the "H" level, no falling detection is performed. The F-GPiOLD flag indicating the previous A / D value is set to "1". In step S1002, the process proceeds to step S1003 during the adjustment, and to step S100 when the adjustment is not in progress.
The process branches to 1025 and returns.

If it is determined in step S1003 that the initial mirror position is being driven during adjustment, step S102 is performed.
Branch to 5 and return.

Steps S1004 to S1024
Is a process performed during the winding and rewinding position drive during the adjustment. That is, the A / D values are sorted,
This is a process of rearranging eight sampled A / D values in descending order.

First, in step S1004, EP
The area start address is set in the register, and step S10
In step 03 to step S1007, the data in the area is compared with the A / D value, and when the data is larger than the data in the area, the data in step S1008 to step S1016 and subsequent data are sequentially shifted.

Steps S1017 to S1018
Then, the A / D value is stored in a vacant place as a result of the shift, and the flow branches to step S1025. In steps S1020 to S1024, it is determined whether or not the search has been performed up to the end of the area.

Next, the flowchart shown in FIG. 114 will be described. This flowchart shows the brake processing of the sequence clutch drive motor.

First, in step S1026, a short brake is applied to the sequence motor 144. Next, in steps S1027 and S128,
After 200 μsec, steps S1029 to S1
At 033, reverse rotation brake is applied for 10 msec.

Steps S1034 to S1038
, The short brake is applied for 50 msec, and then, in step S1039, the sequence motor 144 is turned off, and the process returns in step S1040.

Next, the flowchart shown in FIG. 115 will be described. This flowchart shows the sorted A /
This is a process for averaging the D values.

First, Step S1041 to Step S1
At 044, initialization is performed. Step S1045
In step S1052, the sum of the data of the area is calculated. In steps S1053 to S1055, the sum is divided by 8 to obtain an average value, the ADMAX value is stored in a predetermined RAM area, and in step S1056,
To return.

Next, FIG. 143, FIG. 144 and FIG.
The zoom drive will be described with reference to the flowchart shown in FIG.

[0475] Fig. 143 shows the lens barrel cam rotation angle driven by the zoom motor 146, the ZMPR output signal and the ZMPi output signal output with the rotation of the lens barrel, and further, the retracted position, the wide position, the tele position, and the like. FIG.

The ZMPR signal is output by using a PR (Photo Reflector) 172 to output a reflection signal from a black and silver sticker attached to the outer periphery of the lens frame.
This signal is read by the port. In the figure, the "L" level signal of the ZMPR signal is a portion without reflection at a black seal portion.

In FIG. 47, the “H” level portion is a portion reflected by the silver seal portion. When it is extended from the mirror frame, it goes from “L” level to “H” just before the optical WIDE.
A point where the level changes, "WIDE-1" is provided. Further extending, the optical WIDE position is passed, and further extending a little before the optical TELE, "TELE-1" is provided at a point where the "H" level switches to the "L" level. When extended further, there is a TELE position, and when extended further, there is a stopper position where it comes into contact with the mechanical stopper.

ZMPi is the rising edge of the output signal of Pi,
Count falling edges. WID from collapse position
The number of edges up to E-1 is 220, WIDE-1 to WI
4 for DE, 22 for WIDE to TELE-1
6, the distance from TELE-1 to TELE is 12, and the stopper position from TELE is 3 edges.

Next, the flowcharts shown in FIGS. 116 to 118 will be described. This flowchart is
Zoom up button 123 (ZUSW), zoom down button 1
This is a zoom drive process performed when a zoom operation is performed by 24 (ZDSW).

[0480] Step S1060 is initial data setting required for zoom drive. Disable interrupt, set port E
The data in the EPROM 135 is expanded in the RAM. The control of the drive voltage of the zoom motor, the light emission of the zoom PiLED, the current of the zoom PRLED, and the light emission are performed.

In step S1061, when the zoom direction flag F_ZMUP is "1", the zoom is driven in the extension direction, and when it is "0", the zoom is driven in the extension direction. Step S
In steps S1062 to S1066, a brake start position is calculated for when the zoom buttons 123 and 124 are continuously pressed.

Target position = (TELE position)-(number of stop edges at the time of feeding) (3) The number of stop edges at the time of feeding is the number of edges from the start of applying the short brake during feeding to the complete stop. It is.

Steps S1067 to S1071
Then, a brake start position in the zoom-down direction is calculated.

Brake start position = (WIDE position) +
(Number of stop edges in the rewinding direction) (4) In step S1072, the start position obtained by the above equation (3) or (4) is stored in the WR2,3 register. In step S1075, a timer for detecting the edge width of the Pi signal is started. In step S1074, a zoom button is detected. Step S1075 to step S107
In step 6, if another key is pressed, the zoom is interrupted and the flow branches to step S1093 to apply the brake.

Steps S1077 to S1080
In step S1093, when it is detected that the zoom-up button is released during zoom-up, the process branches to step S1093. When it is detected that the zoom-down button is released only while the ZMPR is at the "H" level during zoom-down, the process branches to step S193. . In the range of TELE to TELE-1, when zooming down is started and the user releases his / her finger from the zoom button to stop zooming, the user cannot stop zooming without moving from TELE-1.

In step S1081, the zoom edge count during the driving in the zoom driving direction is compared with the brake start position. If the position exceeds the position, Cy = 0, so that Cy = 0.
It branches to step S1083. In step S1083, the counter of the output signal of the ZMPi 173 is refreshed based on the count of the ZMPi signal and the output signal of the ZMPR 172. The integration of the count error that occurs when the zoom is repeatedly driven to the wide telephoto is an adjustment value adjusted at the time of factory shipment by switching the output signal of the ZMPR 172,
The problem is solved by rewriting the counter value of the output signal of the ZMPi 173.

In step S1084, if there is no change in the output signal of the ZMPi 173 even after the lapse of the predetermined time, the damage flag F_DMGZM becomes "1", and the flow branches to step S1086.

[0488] In step S1085, the zoom motor 146 is driven to rotate in the forward or reverse direction depending on the drive direction by the zoom drive voltage. In step S1093, the brake is applied to the zoom motor 146. Since the zoom motor 146 does not stop immediately even when the brake is applied, the edge count ZMPR1 of the output signal of the ZMPi 173 is also provided during the brake.
The edge counter is reset by the 72 output signal. If the ZMPi signal has not changed for a predetermined time or more, it is determined that the zoom motor has stopped, and in step S1094,
The motor is turned off, and the process returns in step S1095.

Next, the flowcharts shown in FIGS. 119 to 120 will be described. This flowchart shows a subroutine for driving the zoom from an arbitrary position to an optical wide position.

First, in step S1096, initial settings for zoom driving are made. Step S1097 to Step S
At 1102, it is determined which side of the current position or the wide position is located. If the number of pulses at the current position is subtracted from the number of pulses at the wide position and the carry becomes "0", it is determined that the retracted side is wider than the wide state, and if the carry is "1", it is determined that the telescopic side is wider than the wide side. If it is on the retracted side, in steps S1103 to S1105, the drive direction is calculated as the extension direction and the brake start position is calculated as (wide-stop pulse number). If on the tele side, steps S1106 to S1109
To set the drive direction to the retraction direction and the stop start position to (wide +
(The number of stop pulses).

In step S1110, the calculated brake start position is stored in the WR0,1 register. In step S1111, a timer for detecting the edge width of the output signal of the ZMPi 173 is started. Step S1112
In step S1114, if the ZMPR signal is "L", when the wide position is detected when the lens is widened from the retracted position only by counting the zoom pulse, if the count is erroneous, the wide signal will not be able to reach the wide position. Wide detection is not performed until it becomes "H". Instead, the edge counter is provided with a limiter and stopped in consideration of a failure of the zoom PR circuit.

[0492] In step S1115, the brake start pulse is set to the wide position or the limiter value. In step S1116, the current position pulse and the brake start pulse are compared. If it is determined in step S1117 that the position exceeds the start position, the flow branches to step S1121 to start braking. In step S1118, the zoom PR signal and the zoom Pi signal are processed.

If the zoom damage flag is "1" in step S1119, the flow branches to step S1122. In step S1120, the driving direction of the motor is set based on the driving voltage and driving direction of the zoom step S1112.
Branch to The zoom brake is applied in step S1121, and the process returns in step S1122.

Next, the flowchart shown in FIG. 121 will be described. This flowchart is used for adjustment in the process of driving the zoom to an arbitrary position.

First, in step S1123, initial settings for zoom drive are made. Step S1124 to Step S1
At 129, the drive target position is set in the WR6, WR7 registers. Check whether the drive target position is smaller than tele. If it is larger than the tele, put the tele at the target position.

Steps S1130 to S1133
Then, the current position is compared with the target position. Step S113
In step 4 to step S1137, the setting in the feeding direction is performed. In steps S1138 to S1140,
Make settings for the retraction direction. In step S1141, a brake start position is set. Step S1142
Then, the zoom driving subroutine is called. It returns in step S1143.

Next, the flowchart shown in FIG. 122 will be described. This flowchart is a subroutine for performing zoom driving to the brake start position.

First, in step S1144, the time width limiter of the zoom pulse is set. Step S1145
If it exceeds the brake start position in step S1146, the flow branches to step S1150. In step S1147,
The signal processing of ZMPi 173 and ZMPR 172 is performed.

If the zoom damage flag is "1" in step S1148, the flow branches to step S1151. In step S1149, a motor drive voltage setting motor drive is performed, and the process jumps to step S1145.
In step S1150, the brake is applied to the zoom motor 146, and the process returns in step S1151.

Next, the flowchart shown in FIG. 123 will be described. This flowchart is a process for driving the zoom from an arbitrary position to the retracted position.

First, in step S1152, initial setting of zoom driving is performed. In steps S1153 to S1158, a brake start target position is calculated.
In steps S1159 to S1160, if the current position is further on the retracted side than the retracted position,
In steps S1161 to S1162, zoom driving is not performed. In step S1163, the process returns.

Next, the flowcharts shown in FIGS. 124 to 125 will be described. This flowchart shows the brake processing of the zoom motor 146.

First, in step S1164, ZMPi1
A pulse width limiter timer 73 is started. In step S1165, a flag F-ZMBOV (overflow flag) indicating processing when the ZMPi signal continues to be output forever due to vibration of the blade (not shown) of the ZMPi 173 is set to “0”.

Steps S1166 to S1167
Then, the zoom pulse before the brake is retracted to XR0,1 in advance. In steps S1168 to S1169,
The limiter timer value when the output signal of the ZMPi 173 continues to be output no matter how long is set in the R1 register.

In step S1170, the zoom motor 14
Braking 6 In steps S1171 to S1172, a brake determination limiter value for confirming that a change in the output signal of the ZMPi 173 has not been detected for a predetermined time and has stopped is set in the R0 register.

In step S1173, an overflow of the timer is detected. In step S1174, the overflow flag of the timer is cleared to "0". In step S1175, the R0 register is decremented. If the value of the R0 register becomes "0" in step S1176, it means that the output signal of the ZMPi 173 has not been output for a predetermined time, and the flow branches to step S1192.

Step S1178, Step S1179
Then, the R1 register is decremented. When the R1 register becomes "0", it means that the output signal of the ZMPi 173 is continuously output for a predetermined time or more, and the process branches to step S1181 to forcibly interrupt the process.

In step S1179, ZMPR 172,
The change of each output signal of the ZMPi 173 is examined.
In step S1180, as a result of the processing in step S1179, “0” is set to ZMPi1 by the F-ZMPi flag.
The “1” for which no change of 73 was detected is the ZMPi1
This means that a change in the output signal of 73 has been detected. Here, in the case of “0”, the flow branches to step S1173.
If it is "1", the flow branches to step S1170, where R
Reset the 0 register.

Steps S1181-S1189
If the output signal of the ZMPi 173 continues to change even after a predetermined time has elapsed, the zoom pulse counter is counting incorrectly. A position must be assumed. The zoom pulse retracted before braking and the number of brake stop pulses are added or subtracted depending on the driving direction.

In step S1190, the result of the calculation is stored in the RAM that counts zoom pulses. In step S1191, the flag F-ZMBOV, which means that an overflow has occurred during braking, is set to "1".
In step S1192, the zoom motor 146 is turned off. It returns in step S1193.

Next, the flowcharts shown in FIGS. 126 to 127 will be described. This flowchart shows a process for performing the initial setting of the zoom drive.

First, in step S1194, interrupts are prohibited. In step S1195, a port is set. In step S1196, the interface ic138
Set the operation mode of. In step S1197, all the motors 144, 145, and 146 are turned off.

[0513] Steps S1198 to S1206
At the adjustment value collapse position of the EEPROM 135, Wi
DE-1, WiDE, TELE-1, TELE, TEL
The zoom pulse at the E end is developed in the RAM.

Steps S1207 to S1228
In step (1), the adjustment value of the EEPROM 135 and the determination threshold value of the motor drive voltage value zoom Pi are developed in the RAM.

Steps S1229 to S1242
, The adjustment value of the EEPROM 135, the ZMPR17
The determination value of 2 and the LED current value of the ZMPR 172 are developed in the RAM. In step S1243, the LED current value of the ZMPR 172 is set in the interface ic138.

[0516] In step S1244, ZMPR1
Turn on 72 LEDs. In steps S1245 and S1246, the LED of the ZMPi 173 is turned on. In steps S1246b to S1246d, the determination threshold level of the PTR output signal of the ZMPi173 is set in the interface IC138.

In step S1247, the number of return pulses for reversing the zoom driving direction is set in the RAM, and in steps S1248 to S1251, the number of zoom stop pulses (extending direction, retracting direction). In step S1252, a limiter value for determining the end of the brake is set in the ZR5 register.

[0518] In step S1253, a limiter value for judging that the zoom has been applied and the ZMPi signal is no longer output is set in the ZR6 register. Step S12
At 54, a limiter value to be forcibly terminated when the zoom Pi continues to be output during braking is set to ZR7.
In step S1255, ZMPR172, ZMP
A software timer has a time from when the LED of i173 emits light until the output is stabilized. Step S12
At 56, the brake overflow flag is cleared.

[0519] In step S1257, the ZMPR1
The 72 detection flags are initialized. Step S1258
, The detection flags of the ZMPi 173 are initialized. In step S1259, the zoom damage flag is cleared to "0". In step S1260,
To return.

Next, the flowcharts shown in FIGS. 128 to 130 will be described. This flowchart is Z
The processing of the output signal of the MPi 173 and the output signal of the ZMPR 172 are shown.

As shown in Table 8 of FIG. 162, the output signal of ZMPR 172 has the rising and falling edges of the signal.
The processing for changing the content of the counter that counts the zoom pulse to a predetermined value is switched according to the zoom driving direction at that time. When the rising of the signal of the ZMPR 172 is detected and the zoom is driven forward, data (WIDE-1) is set to the count value of the zoom pulse. No setting is made when the zoom is driven by repetition.

When the falling of the signal of the ZMPR 172 is detected and the zoom is driven forward, (TELE-1)
Set the data of. When the zoom is driven by repetition (W
Set the data of IDE-1).

The output signal of ZMPi 173 counts the rise and fall of the output signal of ZMPi 173 as shown in Table 9 of FIG. The countdown is performed by "1" at the time of feeding and by "1" at the time of counting up.

[0524] In step S1261, the ZMPR1
A change in the 72 signal is detected. When there is a change in the ZMPR172 signal, the F_ZMPR flag is set to “1”. If the F_ZMPR flag is “0” in step S1262, the flow branches to step S1274. In steps S1263 to S1264, the zoom pulse at the time of switching is stored in the WR4 register.

[0525] Steps S1266 to S1273
, When the F_PROD flag is "1", it means a rise. At the time of rising, when zooming down, the process proceeds to step S1274, and when zooming up, the process proceeds to step S1269.
Sets the zoom pulse to WIDE-1. When zooming down, (WIDE-1) is set.

In step S1274, the ZMPi1
A change in the output signal at 73 is detected. When a change in the signal is detected, the F-ZMPi flag is set to "1". In step S1275, if there is no change in the output signal of ZMPi173, the flow branches to step S1284. In steps S1276 to S1280, the zoom pulse is incremented when zooming up, but is not incremented when the increment results in overflow.

Steps S1281 to S1283
In, the zoom pulse is decremented at the time of zooming down, but is not decremented if it is “0” before decrementing. Jump to step S1295. If the ZMPi173 pulse width timer has not overflown in step S1284, the flow branches to step S1296.

At step S1285, the overflow flag is cleared. In step S1286, the R0 register for counting the pulse width of Pi is decremented. In step S1287, when R0 becomes "0", there is no change in the Pi signal for a predetermined time, so it is determined whether the Pi signal has hit the mechanical stopper or the ZMPi173 circuit has more than that, and a damage process is performed. In the damage process, the motor is turned off in step S1288.

[0529] In step S1289, the damage flag is set to "1". Step S1290 to Step S
In step 1294, the zoom pulse is set to "0" because damage at the time of zoom-down may be caused by contact with the sink end. At the time of zooming up, it is conceivable that the stopper may come into contact with the stopper, so the zoom pulse is used as the stopper position data.
Jump to step S1296. Step S129
In 5, when the output signal of the ZMPi 173 has changed, the timer is reset. Step S12
At 96, the process returns.

Next, FIG. 144 will be described. In FIG. 144, the output signal of the ZMPR 172 is A / D converted, and the “H” threshold and the “L” threshold stored in the R6 and R7 registers are given a hysteresis to determine “H” and “L”. It indicates that.

[0531] For example, if the previous determination result is "H" (F_PR
If the OLD flag is “1” and the current AD result is smaller than R7 and is determined to be “L” (F_PROD is set to “0”), it is determined that the signal falls. The change flag (F_ZMPR) is set to “1”.

Next, the flowchart shown in FIG. 131 will be described. This flowchart is based on the ZMPR17
2 shows the determination process.

First, in step S1297, F-
Clear the ZMPR flag to “0”. Step S129
At 8, the signal of the ZMPR 172 is A / D converted.
The A / D result enters the accumulator. Step S129
At 9, the accumulator is compared with the R7 register containing the "L" level value. If it is smaller than the R7 register, the flow branches to step S1305. If the value is equal to or larger than the R7 register, the accumulator is compared with the R6 register containing the value of the "H" level. If the value is less than the R6 register, the processing is jumped to the step S1310 because nothing is performed because the level is an intermediate level.

In step S1301, if the result of the previous determination is "H", there is no change and the flow branches to step S1310. If the previous time is "L", there is a possibility of noise. Therefore, in step S1302, A / D conversion is performed again, and in step S1303, the value is compared with the R6 register to check whether it is equal to or greater than R6. If it is less than R6, start over. Jump to step S1298. R6
In the above case, since the rise has been detected, in step S1304, the previous determination result F-PROLD
To “1”. It branches to step S139.

In step S1305, if the previous judgment is "L", the flow branches to step S1310. In step S1306, A / D is performed again for confirmation. If it is smaller than R7 in step S1307, it means that the falling has been detected. If it is larger than R7, the flow branches to step S1298. In step S1308,
The previous determination (F-PROLD) is set to "0". Since the signal of the ZMPR 172 has changed in step S1309, the F-ZMPR flag 9 is set to "1", and the process returns in step S1310.

Next, the flowchart shown in FIG. 132 will be described. This flowchart is based on the ZMPi1
This shows the processing for detecting the rise and fall of the signal 73.

[0537] In step S1311, the change flag is cleared to "0". In step S1312, if the output signal of ZMPi 173 is "L",
Branch to 1317. Here, if “H”, step S
At 1313, the previous 173ZHPi signal (FP
If (iOLD) is “H”, the flow advances to step S1322 to “L”
Then, in step S1314, after waiting 50 μsec to prevent noise (software timer), in step S1315, if the output signal of ZMPi 173 is “L”, the flow branches to step S1312 to start over. If the output signal of ZMPi 173 is "H", 173
This means that the rising edge of the Pi signal has been detected.

In step S1316, the previous Pi
The signal (F_PiOLD) is set to “1”. Step S1
Jump to 321.

In step S1317, the previous Pi
If the signal is "L", the flow branches to step S1322, where "H"
Then, after 50 μsec in step S1318, if the Pi signal is “H” in step S1319, the flow branches to step S1312 to start over. Step S1
At 319, if the ZMPi signal is "L", it means that the falling of the ZMPi signal has been detected.

In step S1320, the previous ZM
The Pi signal is set to “0”. In step S1321, F-ZM is used to indicate that there is a change in the ZMPi signal.
The Pi flag is set to "1". In step S1322, the process returns.

Next, the flowcharts shown in FIGS. 133 to 137 will be described. This flowchart shows a process related to a mechanical initial that returns the camera to a normal state when the battery is inserted into the camera and the mechanism is not in a normal state, for example, when the battery is removed during a shooting operation.

First, in step S1323, the initial setting of the zoom drive is performed. In step S1324, initial position driving of zoom is performed. When the zoom position is unknown, it is widened once to reset the ZMPi173 pulse count value by switching the ZMPR172 signal. After performing mirror up and down and initializing the shutter charge, set the zoom to the retracted position.

If the power is off in step S1325, the flow branches to step S1338. If the power is on, set the zoom to wide and make the lens infinite. In step S1326, the initial position of the sequence clutch is driven. Step S1327,
In step S1328, the lens retracting flag is set to "1" and the zoom retracting flag is set to "0" to indicate that the zoom is not at the retracted position.

In step S1329, EEPRO
Write to M135. In step S1330, the zoom is driven to the wide position. In step S1331, a zoom encoder value is calculated from the zoom pulse. In step S1332, an open aperture value is calculated from the zoom encoder value. In step S1333, the optical infinity position is calculated from the position of the mechanical stopper of the lens from the zoom encoder value.

[0545] In step S1334, the lens retracting flag is set to "0" to indicate that the lens is not at the retractable position. In step S1335, the EEPROM
Write 135. Step S1336, Step S1
At 337, since the first lens group has been extended to a position where the first and second lens groups do not interfere with each other at the time of collapsing (where a predetermined pulse has been extended from the optical infinity position), the lens is driven to the optical infinite position.

[0546] In step S1338, the mirror and aperture drive are initialized. The aperture Pi 152 is turned on. In step S1339, the aperture Pi 152
Is "H", the aperture is at the initial position,
The flow branches to step S1346 in which no initialization is performed.

Steps S1340 and S1341
, A maximum value is set for the aperture drive pulse. In steps S1342 and S1343, F_UTY
3 is set to "0" and F_UTY4 is set to "1" so that only the aperture drive is performed in the mirror drive subroutine. In step S1344, the F_DPRN flag is set to “0” to prevent the imprint signal (S110) from being output to the 137 date module by mistake when the mirror is driven.

In step S1345, the mirror down process is called to open the aperture. After a software timer of 100 msec in step S1346, in step S1347, the stepping motor 15
By turning off the chip enable of the driver circuit 150, the excitation of the stepping motor 151 is cut off.

Steps S1348 to S167
Is a mechanical initial related to film driving.

In step S1348, according to Table 2 shown in FIG. 156, if F-CNTT1 is "0", autoloading has failed or is completed, and the flow branches to step S1357. In step S1349, when F_CNTT0 is "1", rewinding has been completed, and nothing is performed, so the flow branches to step S1366. Step S135
At 0, if the initial position drive of the sequence clutch has been completed, the flow branches to step S1352. If not, in step S1351, the sequence clutch is driven to the initial position.

In step S1352, the sequence clutch is switched to the rewind position. Step S1353
, Rewinding is performed. If the power is on in step S1354, the lens frame and the rear lens are not at positions where they interfere with the mirror. Therefore, in step S1355, the sequence clutch is driven to the mirror position, and step S1 is performed.
At 356, a shutter charge is performed. If the power is not on, the process branches to step S1366.

In step S1357, F_CND
If T0 is "0", autoloading has failed, so nothing is performed, and the flow branches to step S1366. If F_CNDTO is "1", it is checked in step S1358 whether winding is in progress. When the F-OWiND flag is “1”, the film is being wound up, so it is necessary to wind up one frame in the next photographing to prevent overlapping of photographed frames.

In step S1359, if the initial position drive of the sequence clutch has been completed, the flow branches to step S1361, and if not completed, in step S1360, the initial position drive of the sequence clutch is performed. In step S1361, the sequence clutch is driven to the winding position. Step S1
At 362, one frame is wound up. Step S136
In step 3, if the power is on, the lens frame and the rear lens do not interfere with the mirror. In step S1364, the sequence clutch is switched to the mirror position, and step S1364 is performed.
At 1365, shutter charge is performed.

[0555] In step S1366, the winding halfway flag F_OWiND is set to "0", and step S136 is executed.
7, the result of other processing F_CNDTO, F_C
Since the NDT1 may have changed, the EEPROM 135
Write to. In step S1368, the process returns.

Next, the flowcharts shown in FIGS. 135 to 136 will be described. This flowchart shows the mechanical initial of the zoom when the battery is removed during the zoom operation.

When the zoom and the lens are in the retracted position on the way, in this state, in order to avoid interference between the rear lens of the lens and the mirror when the mirror is moved up and down, only when the zoom is in the wide position, the mirror is moved to the wide position. Perform initials.

First, in step S1369, if the zoom-in-collapse flag F-ZMSNK is "1", the zoom is correctly in the collapsed position, and the flow branches to step S1391 without initializing the zoom. In step S1371, if the ZMPR172 signal is "H", it is known that the signal is in the range of (WiDE-1) to (TELE-1), so that the zoom position searching process is not performed. The flow branches to step S1394. If the ZMPR172 signal is "0", (collapse position) to (WIDE-1)
And (TELE-1) to (stopper position).

Steps S1372 to S1383
In (collapse position) to (WiDE-1) or (TEL
In order to determine any one of E-1) to (TELE end), the pulse number is moved once (stopper position)-(TELE-1) in the collapse direction, and the change in the ZMPR172 signal is examined to determine which one. However, when the user is near the retracted position, the mirror is moved to a position deeper than the retracted position, and there is a possibility that the mirror may hit a mirror that is lowered. Therefore, a process of lowering the drive voltage of the motor and moving it slowly is performed.

Steps S1372 to S1384
In (2), data (stopper position) is input to the zoom pulse. In steps S1375 to S1376, the brake start target position is set to (TELE-1).
In steps S1377 to S1380, the motor drive voltage is set to the voltage applied to the retracted position. In step S1381, the zoom is driven to the target position. Steps S1382 to S1383 Return the changed voltage data to the original data.

In step S1384, the ZMPR1
If the 72 signal is “H”, the zoom pulse is (TE
LE-1) is set, and the position is known. The flow branches to step S1394. If the zoom PR is "L", the zoom position is the retracted position (WiDE-
Since it is in the range of the position 1), the zoom is extended and the rising signal of the zoom PR is detected. Step S138
5, In step S1386, the zoom pulse is set to “0”.

In step S1487, the zoom is set to W
Drive toward IDE. In step S1388, the zoom pulse is converted into a zoom encoder value. In step S1389, an open aperture value is calculated from the zoom encoder value. In step S1390, the number of lens drive pulses from the infinite mechanical stopper position of the lens to the optical infinite position is determined from the zoom pulse. Jump to step S1394.

In step S1391, if the lens retracted position flag F-LNSSNSK is "1", it means that the battery has been removed while the camera is in the power-off state, and the flow branches to step S1404.

In step S1392, there is no arrangement in which the zoom-retract flag F-ZMSNK is “1” and the lens-retract flag F-LNSSNK is “0” in the sequence.
65, the zoom damage flag is set to “1”, and in step S1393, a damage process is performed and release lock is performed.

[0564] In step S1394, the mirror and shutter are initialized. Step S139
In steps 5a to 5c, the first lens unit is once applied to the infinite mechanical stopper, and the first lens unit is extended to a position where the first lens unit and the second lens unit do not interfere with each other when retracted. Step S1
The 396a, b lens retractable flag is set to "1", the zoom retracted position flag is set to "0", and step S139 is performed.
At 7, data is written to the EEPROM 135.

Steps S1398 to S1400
In step, data of (TELE end) is entered in the zoom pulse, and in step S1401, the zoom is driven toward the retracted position. In step S1402, the zoom retract position flag is set to “1”, and step S1403E is set.
Write data to EPROM. Step S1404
And return.

Next, the flowchart shown in FIG. 137 will be described. This flowchart is for the mirror and shutter mechanical initials.

First, in step S1405, if the mirror up switch 157 is "0", it means that the mirror is up, and the flow branches to step S1407. If the shutter charge switch 156 (SCSW) is “0” in step S1406, it means that the shutter is in the normal state in the shutter charge state.
Jump to 17. Shutter charge switch 15
When 6 is "1", the mirror is down, but the shutter charge has not yet been performed, so the flow branches to step S1414 to charge the shutter.

In step S1407, when the shutter charge switch 156 is "1", the mirror remains in the mirror-up state, and the flow branches to step S1409 to perform mirror-down. Shutter charge switch 156
Is “0”, the mirror up switch 157 (MUS
W), since the combination is impossible due to the configuration of the shutter charge switch 156, the mirror damage flag FD
MGMiR is set to “1” to go to the damage process and lock the operation of the camera.

In step S1409, if the initial position drive of the sequence clutch has not been performed,
In step S1410, the initial position of the sequence clutch is driven.

Steps S1411 to S1413
In step S1413, the F-UTY3 and F-UTY4 flags are set to "1" and "0", respectively, so that only the mirror down operation is performed. If it is determined in step S1414 that the initial position driving operation of the sequence clutch has not been performed,
In step S1415, the initial position of the sequence clutch is driven. In step S1416, shutter charge is performed. Step S1417
And return.

As described above, if the state detection mechanism of the first embodiment is used, a single-lens reflex camera
The mechanical drive in the body, which normally uses two motors and a complicated clutch mechanism, can be performed by a small clutch using only a single motor and a single sensor. This can greatly contribute to reducing the size and cost of the entire camera.

Next, a state detecting mechanism according to a second embodiment of the present invention will be described.

In the first embodiment, the photo interrupter P
Although it has been shown that stable position detection can be performed by switching the current supplied to the LED of I, the present embodiment has the same effect even if the current supplied to the LED of the photointerrupter PI is constant. Will be described.

The description will be made assuming that the structure of the clutch unit is the same as that of the first embodiment and that only the vicinity of the circuit of the photointerrupter PI is different.

FIG. 145 is an electric circuit diagram showing the configuration near the photointerrupter in the state detection mechanism of the second embodiment, and corresponds to FIG. 47 in the first embodiment.

Here, the clutch lever 301 also has three kinds of transmittance, and a part thereof is arranged inside the PI 302. The PI 302 includes an LED 307 and a phototransistor 308. The LED 307 is turned on at a constant current by the power supply unit 306. On the phototransistor 308 side, resistors 303 and 304 for converting a generated current into a voltage are provided. The resistor a 303 is a resistor that always serves as a path for a photocurrent, and the transistor 304 is connected in series to the resistor 304.

The base terminal of the transistor 305 is controlled by the control circuit, whereby the resistor 304 is connected to the photocurrent path in parallel with the resistor 303. That is, if the values of the resistor 303 and the resistor 304 are equal, when the transistor is turned on, the total resistance becomes about 1/2. Here, the point at which the CPU monitors the point 309 is the same as in the first embodiment.
If the resistance value changes by 03 and 304, the value changes.

As is clear from the above, the resistances 303, 3
By appropriately setting the value of 04, it is possible to obtain the two types of outputs shown in FIGS. 50 and 51 in the first embodiment.

Therefore, in the flowchart shown in the first embodiment, the LED of the photointerrupter PI
By controlling the transistor 305 at the time corresponding to the switching of the current, it is also possible to secure a stable determination.

Next, a state detecting mechanism according to a third embodiment of the present invention will be described.

In the first embodiment, an example was described in which the absolute position was detected only in the initial position. However, in the third embodiment, the drive system is a shutter / mirror system, a winding-up system, as in the first embodiment. It is equivalent that three types of power systems are arranged around the clutch part for the purpose of a clutch that switches between three types, a system and a rewind system. However, in this embodiment, not only the initial position,
It is an object of the present invention to provide a system that enables absolute position detection of all three drive positions.

FIG. 147 is an enlarged view of a main part showing a clutch lever in the state detecting mechanism of the third embodiment.

In FIG. 147, the clutch cam 211 is
Similar to the first embodiment, the main parts of the clutch unit that is switched in one direction and driven in the other direction are the same as those of the first embodiment, though not shown, but the planetary gears that are planets and the first-stage gears of each drive system. Have been.

[0584] The clutch lever 212 is biased by a spring (not shown) in the direction of the arrow, whereby the locking portion 212a
However, it can be switched and locked by contacting the clutch cam. A point SE point monitored by a sensor (not shown) is provided at the end of the clutch lever, and a sensor output corresponding to the point is input to the processing circuit. The clutch lever 212 is lifted by the cam surface when the cam rotates in the right direction, and is sequentially switched. However, in order to clarify the relationship between the cam and the lever, FIG.
This will be described with reference to 46.

FIG. 146 is a view in which the lift state of the cam is developed in the circumferential direction, and the state of FIG. 147 is a state in which the locking surface of the shutter / mirror position 213 is locked.
That is, since the maximum lift position (outer periphery) of each cam is the same R, the clutch lever 212 corresponds to a position that is lower than the outer periphery by the lift amount h3. By the way, in the first embodiment, the amount of down from the outer periphery was the same at other locking positions. However, in the present embodiment, the down amount at the winding position is set to h1 and the down amount at the rewind position is set to h2, and the locking states at the three positions are all different.

Therefore, in FIG. 147, the detected portion at the tip of the clutch lever is shifted Xn with respect to the detecting portion SE point.
Although the surfaces correspond, the locking state changes, so that the Xq plane corresponds to the SE point in the h1 down winding state, and the Xp plane corresponds to the SE point in the h2 down rewinding state. In the region where the maximum lift is performed, the Xr plane corresponds to the SE point.
To clarify the configuration of the Xn-Xr plane in the lever,
FIG. 148 shows a γ-γ cross section.

With respect to the thickness L of the clutch lever, Xn to Xr
Are set to have different thicknesses, the Xn range is set to L1, the Xp range is set to L2, the Xq range is set to L3, and the Xr range is set to a hole.

Here, L1 to L3 are configured such that L1>L2> L3. In this embodiment, L is 0.8 mm.
In addition, L1 is 0.7 mm, L2 is 0.4 mm, and L3 is 0.2 mm.
Each is set to 2 mm.

[0589] As described in the first embodiment, molding the clutch lever with a mold member and controlling the transmittance by the thickness has been described in the first embodiment. Here, the transmittance at the four locations is set as follows. You have set.

Xn: 0%, Xp: 30%, Xq: 60%, Xr: 100% Therefore, the output values of PI are different at the three drive positions, and the absolute position can be detected in any drive state. It becomes possible.

FIGS. 149 to 151 and 166
(Table 12) shows the SCPi 147 in the third embodiment.
FIG. 6 is an explanatory diagram showing a method of controlling by switching the LED current by driving of each drive system.

In the third embodiment, the control method is the same as the method described in the first embodiment, but it is possible to determine the driving position of the hoisting system and the driving position of the rewinding system. Therefore, the LED current of the SCPi 147 is also three types compared to the two types of the first embodiment. Similarly, the judgment level is 3
Kind.

FIG. 149 shows the output signal waveform of the SCPi 147 when the sequence motor 144 is driven in the switching direction of the sequence clutch when the LED current of the SCPi 147 is small. It is a figure showing the determination result of “”.

FIG. 150 is a diagram showing an output signal waveform of the SCPi 147 in the same manner as described above when the LED current of the SCPi 147 has an intermediate value.

FIG. 151 is a diagram showing an output signal waveform of the SCPi 147 in the same manner as described above when the LED current of the SCPi 147 is large.

Table 12 shown in FIG. 166 shows that the LED current of the SCPi 147 is large, medium, small and the initial position, the winding system position, the rewind system position, and "H" and "L" after the judgment of the SCPi 147 signal output. It is a table showing the relationship with.

Next, the flowchart shown in FIG. 152 will be described. This flowchart is based on SCPi147
3 shows a processing flow of a subroutine at the time of driving to an initial position (mirror driving system position) in the LED current switching method. Hereinafter, description will be made step by step according to a flowchart.

In step S1670, initialization necessary for driving the sequence clutch is performed. EEPRO
Development of adjustment data stored in M135 into RAM, setting of drive voltage of sequence motor 144, SCP
The setting of the determination of the output signal of i147, the setting of the AD channel, and the like are performed.

Next, at step S1671, the SC
The LED current value of the Pi 147 is set at a “small” value. In step S1672, the sequence motor 144 is driven in the sequence clutch switching direction. In step S1673, the output signal of the SCPi 147 is
D conversion is performed, and a falling change of the signal is detected. Step S
At 1674, if the fall of the output signal of the SCPi 147 is detected, the flow branches to step S1675; otherwise, the flow branches to step S1673 to continue until the fall is detected. In step S1675, the sequence motor 144 is braked and stopped. Step S
At 1676, the process returns.

Next, the flowchart shown in FIG. 153 will be described. This flowchart is based on SCPi147
3 shows a subroutine process for driving to a hoisting drive system position in the LED current switching method. Hereinafter, description will be made in order according to the flowchart.

In step S1677, FIG.
Initial setting is performed in the same manner as in Step S1670 of Step 2. In step S1678, the L of SCPi147
Set the ED current value at the "medium" value. Step S167
At 9, the falling edge is counted. Set the “falling counter” to “1”. It shows the number of falling edges from the initial position to the hoisting drive system position. In step S1680, the sequence motor 144 is driven in the sequence clutch switching direction.

In step S1681, the SCPi1
The A / D conversion is performed on the output signal of 47, and the falling change of the signal is detected. In step S1682, if there is a fall, the process branches to step S1683. If there is no fall, the process branches to step S1681. In step S1683, the falling counter is decremented by "1". In step S1684, if the value of the falling counter is "0", the flow branches to step S1685. Otherwise, the flow branches to step S1681.

In step S1685, the sequence motor 144 is braked and stopped. In steps S1686 to S1688, SCPi1
The LED current value of the SCPi 147 is set to a “small” value,
Output signal is detected.

As shown in Table 12 shown in FIG. 166, when it is at the winding position, it indicates "H". If "H" is not indicated here, the drive may be abnormal, so
In step S1689, the initial position (mirror position)
After driving, the process branches to step S1678 again to perform the winding position driving. In step S1689a, in the case of the second abnormality, the driving is interrupted to branch to damage. In step S1690, the process returns.

Next, the flowchart shown in FIG. 154 will be described. This flowchart shows a subroutine for driving to a rewind drive system position.

First, in step S1691, initialization is performed in the same manner as in step S1670. Next, in step S1692, the LED current of the SCPi 147 is set to a “large” value. Next, step S1693
, "2" is set to the counter value for counting the falling edge. Next, in step S1694, the sequence motor 144 is driven in the sequence clutch switching direction. Next, in step S1695, the signal output of the SCPi 147 is A / D converted to detect a fall change. If a fall change is detected in step S1696, the flow branches to step S1697; otherwise, the flow branches to step S1695.

In step S1697, the "falling counter" for counting the falling edge is decremented by "1". In step S1698, if the content of the “fall counter” is “0”, the flow branches to step S1699; otherwise, the flow branches to step S1695. In step S1699, the sequence motor 144 is braked. Step S1700 to step S1702
, The LED current of the SCPi 147 is set to a “medium” value.

According to Table 12 of FIG. 166, the output signal of SCPi 147 becomes "H" at the position of the rewinding drive system.
If it does not become “H”, it is regarded as abnormal and step S1703
Branch to

In step S1703, the initial position drive is performed once. If it is the second abnormality in step S1703a, the flow branches to abnormality processing. If not, the flow branches to step S1692, and is driven again to the rewind drive system position. In step S1704, the process returns.

As described above, when this embodiment is used, three or more driving positions can be absolutely detected by a single sensor. Therefore, when a mechanism member has any abnormality or an unexpected impact is applied to the external member, Even when more power is added, there is no danger of erroneously driving another driving position, and it is possible to provide a state detection mechanism having a highly safe clutch mechanism.

As described above, according to each of the above-described embodiments, when three or more levels are detected by a single sensor, the driving state of the element can be adjusted according to the detection position and can be varied. Thus, the limited range can be effectively used, and sufficient hysteresis can be provided in the determination.

Therefore, it is possible to detect an absolute position extremely stably even with a single sensor, which greatly contributes to the size reduction and cost reduction of not only the camera but also all position detection mechanisms. is there.

[0613]

As described above, according to the present invention, it is possible to provide a state detecting mechanism capable of reliably detecting an absolute position with a single sensor.

[Brief description of the drawings]

FIG. 1 is a top view of a camera to which a state detection mechanism according to a first embodiment of the present invention is applied.

FIG. 2 is a front view of the camera shown in FIG. 1;

FIG. 3 is a bottom view of the camera shown in FIG. 1;

FIG. 4 is a right side view showing a state in which a strobe is stored in the camera shown in FIG. 1;

FIG. 5 is a rear view of the camera shown in FIG. 1;

FIG. 6 is a right side view showing a state where flash photography is performed by the camera shown in FIG. 1;

FIG. 7 is an enlarged top view of a main part showing a mode setting member in the camera shown in FIG. 1;

FIG. 8 is a top view in center section of the camera shown in FIG. 1;

FIG. 9 shows a WIDE end of a photographing optical system in the camera;
That is, it is a side view showing a state where the focal length f = 28 mm.

FIG. 10 is a side view showing a standard state of a photographing optical system in the camera, that is, a state in which a focal length f is 70 mm.

FIG. 11 is a view showing a TELE of a photographing optical system in the camera
FIG. 4 is a side view showing an end, that is, a state where a focal distance f is 110 mm.

FIG. 12 is a side view showing a collapsed state of a photographing optical system in the camera.

FIG. 13 is an exploded internal perspective view of the camera.

FIG. 14 is a block diagram showing power distribution in a power unit in the state detection mechanism of the first embodiment.

FIG. 15 is a perspective view showing the principle of a sequence clutch in the state detection mechanism of the first embodiment.

FIG. 16 is a model diagram showing a clutch unit in the state detection mechanism of the first embodiment.

FIG. 17 is a model diagram showing a clutch unit in the state detection mechanism of the first embodiment.

FIG. 18 is a model diagram showing a clutch unit in the state detection mechanism of the first embodiment.

FIG. 19 is a model diagram showing a clutch unit in the state detection mechanism of the first embodiment.

FIG. 20 is an enlarged sectional view showing a planetary gear according to the first embodiment.

FIG. 21 is an enlarged sectional view showing another example of the planetary gear in the first embodiment.

FIG. 22 is an exploded perspective view of a gear train from a motor to a clutch unit in the first embodiment.

FIG. 23 is an exploded perspective view showing a gear train of a shutter / mirror system in the first embodiment.

FIG. 24 is a side view showing the SM cam gear in the first embodiment. 58b is a cross-sectional view showing

FIG. 25 is a sectional view showing a mirror driving cam, taken along the line AA ′ in FIG. 24;

FIG. 26 is a cross-sectional view showing the shutter charging cam, taken along the line BB ′ in FIG. 24;

FIG. 27 shows a state where the SM cam gear and the mirror lever in the first embodiment are in a normal stop position (mirror down position).
FIG. 4 is an explanatory diagram showing the relationship when the information is in the state of FIG.

FIG. 28 is an explanatory diagram showing a relationship when the SM cam gear and the mirror lever in the first embodiment are at the mirror up position.

FIG. 29 is a perspective view of a main part of a mirror system in the first embodiment.

FIG. 30 is an explanatory diagram in which each lever is modeled for the mirror operation of the mirror system in the first embodiment.

FIG. 31 is an explanatory diagram in which each lever is modeled for the mirror operation of the mirror system in the first embodiment.

FIG. 32 is a schematic view of a focal plane shutter used in the camera shown in FIG. 1 as viewed from the subject side.

FIG. 33 is a top view of the vicinity of the BB 'section in FIG. 24, as viewed from above the camera.

FIG. 34 is a top view of the vicinity of the BB 'section in FIG. 24, as viewed from above the camera.

FIG. 35 is a bottom view of the timing board in FIG. 23 as viewed from below.

FIG. 36 is a developed perspective view showing a gear train of a hoisting system in the first embodiment.

FIG. 37 is a developed perspective view showing a gear train of a rewinding system in the first embodiment.

FIG. 38 is an explanatory diagram showing a relationship between a clutch cam and a clutch lever in the first embodiment.

FIG. 39 is an explanatory diagram showing a relationship between a clutch cam and a clutch lever in the first embodiment.

FIG. 40 is an explanatory diagram showing a relationship between a clutch cam and a clutch lever in the first embodiment.

FIG. 41 is an explanatory diagram showing a relationship between a clutch cam and a clutch lever in the first embodiment.

FIG. 42 is a sectional view showing a section taken along the line CC ′ of the clutch lever shown in FIG.

FIG. 43 is a developed view in which a circumference including a cam surface of the clutch cam in the first embodiment is developed.

FIG. 44 is a perspective view showing a clutch lever and a photo interrupter SCPI in the first embodiment.

FIG. 45 is a block diagram showing an application example of the position detecting device in the state detecting mechanism of the first embodiment.

FIG. 46 is a timing chart illustrating a clutch mechanism during a photographing operation in the state detection mechanism of the first embodiment.

FIG. 47 is an electric circuit diagram showing a configuration of an electric circuit of a position detection mechanism in the camera.

FIG. 48 is a diagram showing an output signal waveform of the photointerrupter SCPI in the first embodiment.

FIG. 49 is a diagram showing an output signal waveform of the photo interrupter SCPI in the first embodiment.

FIG. 50 is a diagram showing an output signal waveform of the photo interrupter SCPI in the first embodiment.

FIG. 51 is a diagram showing an output signal waveform of the photo interrupter SCPI in the first embodiment.

FIG. 52 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 53 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 54 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 55 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 56 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 57 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 58 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 59 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 60 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 61 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 62 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 63 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 64 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 65 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 66 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 67 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 68 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 69 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 70 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 71 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 72 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 73 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 74 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 75 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 76 is a flowchart showing a part of a main flow operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 77 shows a part of a subroutine that constitutes a series of shutter release sequences of mirror up, aperture down, shutter release mirror down, aperture open film winding, and shutter charge in a camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart which shows.

FIG. 78 is a part of a subroutine that constitutes a series of shutter release sequences of mirror up, aperture down, shutter release mirror down, aperture open film winding, and shutter charge in a camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart which shows.

FIG. 79 is a portion of a subroutine that constitutes a series of shutter release sequences of mirror up, aperture down, shutter release mirror down, aperture open film winding, and shutter charge in a camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart which shows.

FIG. 80 is a flowchart showing a part of a shutter release processing operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 81 is a flowchart showing a part of a shutter release processing operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 82 is a flowchart showing a part of a shutter release processing operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 83 is a flowchart showing a part of a shutter release processing operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 84 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 85 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 86 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 87 is a flowchart showing a part of an autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 88 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 89 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 90 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 91 is a flowchart showing a part of an autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 92 is a flowchart showing a part of the autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 93 is a flowchart showing a part of an autofocus operation of the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 94 is a flowchart showing an all-interrupt prohibition processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 95 is a flowchart showing a part of an interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 96 is a flowchart showing a part of the interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 97 is a flowchart showing a part of the interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 98 is a flowchart showing a part of the interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 99 is a flowchart showing a part of the interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 100 is a flowchart showing a part of an interrupt branch processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 101 is a flowchart showing a remote control signal processing operation at a point where the remote control signal interrupts and branches in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 102 is a flowchart showing an integration time detection processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 103 is a flowchart showing an operation of adjusting a threshold level at the time of position detection in a camera to which the state detection mechanism of the first embodiment is applied.

104 shows initial drive of a sequence clutch, drive of a sequence clutch to a mirror drive system position, and a camera to which the state detection mechanism of the first embodiment is applied.
It is the flowchart which showed a part of each processing operation of drive to a winding drive system position and drive to a rewind drive system position.

FIG. 105: Initial drive of a sequence clutch, drive of a sequence clutch to a mirror drive system position, in a camera to which the state detection mechanism of the first embodiment is applied.
It is the flowchart which showed a part of each processing operation of drive to a winding drive system position and drive to a rewind drive system position.

FIG. 106 shows an initial drive of a sequence clutch and a drive of a sequence clutch to a mirror drive system position in a camera to which the state detection mechanism of the first embodiment is applied.
It is the flowchart which showed a part of each processing operation of drive to a winding drive system position and drive to a rewind drive system position.

FIG. 107 shows an initial drive of a sequence clutch and a drive of a sequence clutch to a mirror drive system position in a camera to which the state detection mechanism of the first embodiment is applied.
It is the flowchart which showed a part of each processing operation of drive to a winding drive system position and drive to a rewind drive system position.

FIG. 108 shows an initial drive of a sequence clutch and a drive of a sequence clutch to a mirror drive system position in a camera to which the state detection mechanism of the first embodiment is applied.
It is the flowchart which showed a part of each processing operation of drive to a winding drive system position and drive to a rewind drive system position.

FIG. 109 is a flowchart showing a part of an initial setting operation for driving a sequence clutch mechanism in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 110 is a flowchart showing a part of an initial setting processing operation for driving a sequence clutch mechanism in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 111 shows a part of a subroutine for A / D converting an SCPi signal at the time of sequence clutch switching drive and detecting a fall of the signal in the camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart.

FIG. 112 shows a part of a subroutine for A / D converting an SCPi signal at the time of sequence clutch switching drive and detecting a falling of the signal in the camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart.

FIG. 113 shows a part of a subroutine for A / D converting an SCPi signal at the time of sequence clutch switching drive and detecting a fall of the signal in the camera to which the state detection mechanism of the first embodiment is applied. It is a flowchart.

FIG. 114 is a flowchart showing a brake processing operation of a sequence clutch drive motor in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 115 is a flowchart showing a processing operation for averaging sorted A / D values in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 116 is a flowchart showing a part of the zoom drive processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 117 is a flowchart showing a part of a zoom drive processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 118 is a flowchart showing a part of the zoom drive processing operation in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 119 is a flowchart showing a part of a subroutine for driving a zoom from an arbitrary position to an optical wide position in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 120 is a flowchart showing a part of a subroutine for driving a zoom from an arbitrary position to an optical wide position in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 121 is a flowchart showing a subroutine used for adjustment in a process of driving a zoom to an arbitrary position in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 122 is a flowchart showing a subroutine for performing zoom driving to a brake start position in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 123 is a flowchart showing processing for driving a zoom from an arbitrary position to a collapsed position in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 124 is a flowchart showing a part of a brake process of a zoom motor in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 125 is a flowchart showing a part of a zoom motor braking process in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 126 is a flowchart showing a part of processing for performing initial setting of zoom drive in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 127 is a flowchart showing a part of processing for performing initial setting of zoom drive in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 128 is a flowchart showing a part of processing of an output signal of ZMPi and an output signal of ZMPR in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 129 is a flowchart showing a part of processing of an output signal of ZMPi and an output signal of ZMPR in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 130 is a flowchart showing a part of processing of an output signal of ZMPi and an output signal of ZMPR in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 131 is a flowchart showing ZMPR determination processing in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 132 is a flowchart showing processing for detecting the rise and fall of the ZMPi signal in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 133 is a flowchart showing a part of a process related to a mechanical initial in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 134 is a flowchart showing a part of a process related to a mechanical initial in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 135 is a flowchart showing a part of processing relating to zoom initials in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 136 is a flowchart showing a part of processing relating to zoom initials in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 137 is a flowchart showing processing related to initials of a mirror and a shutter in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 138 is a diagram showing an example of a PCV sounding cycle in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 139 is a diagram showing another example of the sounding period of the PCV in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 140 is a diagram showing another example of the sounding period of the PCV in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 141 is a diagram illustrating an output voltage of SCPi in a camera to which the state detection mechanism according to the first embodiment is applied.
FIG. 4 is a diagram in which the result of D conversion is plotted on the vertical axis and the rotational position of the sequence clutch cam is plotted on the horizontal axis.

FIG. 142 is a diagram showing an output voltage of SCPi in a camera to which the state detection mechanism of the first embodiment is applied.
FIG. 4 is a diagram in which the result of D conversion is plotted on the vertical axis and the rotational position of the sequence clutch cam is plotted on the horizontal axis.

FIG. 143 is a view showing a camera to which the state detection mechanism of the first embodiment is applied, a lens frame cam rotation angle driven by a zoom motor, and a ZMP output with rotation of the lens frame.
FIG. 9 is a diagram illustrating an R output signal, a ZMPi output signal, and a relationship between a retracted position, a wide position, a tele position, and the like.

FIG. 144 is a diagram showing how the output signal of the ZMPR is A / D-converted to determine “H” and “L” in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 145 is an electric circuit diagram showing a configuration of a main part of a state detection mechanism according to a third embodiment of the present invention.

FIG. 146 is a developed view in which a lift state of a cam in the state detection mechanism of the third embodiment is developed in a circumferential direction.

FIG. 147 is an enlarged view of a main part showing a clutch lever in the state detection mechanism according to the third embodiment of the present invention.

FIG. 148 is a cross sectional view showing a γ-γ ′ cross section in FIG. 147.

FIG. 149 is the LE of the SCPi in the third embodiment.
FIG. 4 is an explanatory diagram showing a method of performing control by switching a D current by driving for each drive system.

FIG. 150 shows LEs of SCPi in the third embodiment.
FIG. 4 is an explanatory diagram showing a method of performing control by switching a D current by driving for each drive system.

FIG. 151 shows the LE of SCPi in the third embodiment.
FIG. 4 is an explanatory diagram showing a method of performing control by switching a D current by driving for each drive system.

FIG. 152 is a flowchart showing a subroutine process for driving to an initial position in an SCPi LED current switching method in a camera to which the state detection mechanism according to the third embodiment of the present invention is applied.

FIG. 153 is a flowchart showing a subroutine process for driving to a hoisting drive system position in an SCPi LED current switching method in a camera to which the state detection mechanism of the third embodiment is applied.

FIG. 154 is a flowchart showing a subroutine process for driving to a rewind drive system position in a camera to which the state detection mechanism of the third embodiment is applied.

FIG. 155 is a table 1 illustrating flags F_TSYS0, 1 and an operation state of the camera in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 156 is a table 2 illustrating flags F_CNTT0, 1 and a film state inside the camera in the camera to which the state detection mechanism of the first embodiment is applied.

157. A mirror-up / mirror-down subroutine and a flag F_UT for controlling the subroutine in a camera to which the state detection mechanism of the first embodiment is applied.
9 is a table 3 illustrating a relationship between Y3 and Y4 and mirror and aperture driving.

FIG. 158 is a table 4 illustrating interrupt factors and factors permitted according to the state of the camera in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 159 is a bitmap showing interrupt factors in Table 4 in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 160 is a bit map showing interrupt factors in Table 4 in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 161 is a table 7 showing internal flag settings at the time of a sequence clutch switching operation in a camera to which the state detection mechanism of the first embodiment is applied.

FIG. 162 is a table 8 showing a relationship between a change in the zoom photo-reflector and the zoom photo-interrupter at the time of zoom driving and a zoom pulse counter in the camera to which the state detection mechanism of the first embodiment is applied.

FIG. 163 is a table 9 illustrating a relationship between a change in the zoom photo-reflector and the zoom photo-interrupter during zoom driving and a zoom pulse counter in the camera to which the state detection mechanism according to the first embodiment is applied.

FIG. 164 shows a collapsed position where the lens is housed in the camera, a state where the lens is extended to a wide position at the time of photographing, and a flag F_
12 is a table 10 showing a relationship between ZMSNK and a flag F_LNSSNK.

FIG. 165 shows a collapsed position in which a lens is housed in a camera, a state in which the lens is extended to a wide position during photographing, and a flag F_
12 is a table 11 showing a relationship between ZMSNK and a flag F_LNSSNK.

FIG. 166 is a table 12 illustrating a method in which the SCPi LED current is switched in a camera to which the state detection mechanism according to the third embodiment is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shooting lens 2 ... Release button 11 ... Mirror frame 12 ... Mirror box 13 ... Shutter unit 14 ... Motor 15 ... Patrone 16 ... Spool room 22 ... Power unit 26 ... Shutter charge lever 27 ... Mirror drive lever 31, 41 ... Sun gear 32, 43 planetary gears 33, 45 shutter-mirror drive system first-stage gears 34, 46 ... wind-up drive system first-stage gears 35, 44 ... rewind drive system first-stage gears 36, 42 ... clutch cam 37, 47 ... clutch lever SCPI ... Photo-interrupter

Continuation of the front page (72) Inventor Jun Maruyama 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (56) References JP-A-2-33048 (JP, A) JP-A-63- 284426 (JP, A) Japanese Utility Model 3-3-33636 (JP, U) Japanese Utility Model Application 57-201916 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 17/00 G03B 17 / 04 G01D 5/26-5/38

Claims (1)

(57) [Claims] 1. The position of a moving member responsive to a driving force transmission mechanism.
By detecting the location, in the state detecting mechanism for detecting the state of the driving force transmission mechanism, receives reflected light or transmitted light from the light emitting element and the movable member for projecting light toward the upper KiUtsuri MEMBER a photoelectric sensor composed of a light receiving element, has a reflectance or transmittance of at least three levels, detection of the photoelectric sensor in accordance with the movement of the moving member
The reflectance or transmittance at the exit point changes,
A detected portion provided on said moving member, and the output of the photodetector compared to determine value, the comparison result
Anda determining means for determining the position of the moving member by, in accordance with the detected position of the moving member, the determination of the determining means
Set the value and change the current supplied to the light emitting element.
Further, the output level of the light receiving element is adjusted.
State detecting mechanism, characterized in that.