JPS62111244A - Camera - Google Patents

Abstract

PURPOSE:To improve a mode switching with respect to operability, space, and cost by using the second setting operation member for the switching of modes in a drive mode and a self-timer mode in common and setting the mode of high frequency in use without the second setting operation member at the mode switching time. CONSTITUTION:A setting means 1 is switched to the position D of the drive mode or the position S of the self-timer mode and consists of a self-timer/drive changeover switch 1a and a push key type selecting switch 1b. When the self- timer/drive changeover switch 1a is switched from the self-timer mode S to the drive mode D, a control means 2 rewrites the contents of a register 2a with a single photographing quick mode, which is the initializing mode of high frequency in use, and lights a display element 3a. When the self-timer/drive changeover switch 1a is switched from the drive mode D to the self-timer mode S, the control means 2 rewrites the contents of the register 2a with a self-timer 10sec mode, which is the initializing mode of high frequency in use, and lights a display element 3d.

Description

Detailed Description of the Invention (Field of Application of the Invention) The present invention provides -
The present invention relates to an improvement of a camera having a drive mode consisting of a drive mode, and a self-timer mode consisting of a plurality of modes each setting a different self-timer time.

(Background of the Invention) Conventionally, a separate slide switch, rotary switch, or the like has been used to switch the drive mode (single shooting, continuous shooting) of a camera. A similar single switch was also used to switch the self-timer mode (Ho seconds, 2 seconds). For cameras with limited space, it is extremely difficult to incorporate both switches, and operability inevitably has to be sacrificed, and there are also many problems in terms of cost.

Therefore, the present inventor has proposed a first setting operation member that switches between the drive mode and the self-timer mode, and a second setting operation member that sequentially switches between a plurality of modes within the drive mode or a plurality of modes within the self-timer mode. We are considering providing a second setting operation member and using the second setting operation member for switching between the drive mode and the self-timer mode. In this case, for example, when the self-timer mode is set, an extra memory is required in terms of circuitry to store the previous drive mode. Furthermore, even if you memorize it, when you switch back to drive mode, you will not necessarily be able to take the same picture as you did before, because you will have taken a completely different type of picture in the self-timer mode.

(Objective of the Invention) An object of the present invention is to solve the above-mentioned problems and provide a camera that is easy to use and can improve operability, space, and cost regarding mode switching.

(Features of the Invention) In order to achieve the above object, the present invention includes a first setting operation member that switches between a drive mode and a self-timer mode, and a plurality of modes within the drive mode or a plurality of modes within the self-timer mode. When the self-timer mode is switched to the drive mode by the operation of the second setting operation member that sequentially switches the mode, and the first setting operation member is operated, the mode is changed from the drive mode to the self-timer mode. A control means is provided that automatically initializes each of the frequently used predetermined self-timer time modes when switched to the timer mode,
Therefore, the second setting operation member is used for switching between each mode within the drive mode and the self-timer mode, and
When switching drive mode/self-timer mode, the second
The device is characterized in that a frequently used mode can be set without operating the setting operation member.

(Example of the invention) FIG. 1 shows the basic configuration of an embodiment of the present invention.

The setting means l includes a self-drive changeover switch la that is switched to one of two positions, drive mode D and self-timer mode S, and mechanically maintains that position;
A control means 2 consisting of, for example, a microcomputer, comprises a push-button selection switch tb arranged at the center of rotation of the self-drive switching 1 inch la, and a control means 2 consisting of, for example, a microcomputer, controls the setting means l while the release button is released. The mode processing is performed in response to a signal from the controller, and the set mode is stored in the built-in register 2a and displayed on the display means 3.

The mode processing will be explained with reference to the flowchart in FIG. First, if the self-drive selector switch la is switched to drive mode D, and the contents of register 2a are also one of the drive modes D, each time the selection switch lb is pressed, the control means 2 rewrites the contents of the register 2a cyclically in the order of single shooting high speed mode→continuous shooting high speed mode→continuous shooting low speed mode.

At the same time, when the single-shot high-speed mode is entered, the display element 3a of the display means 3 is turned on, and when the quick-shot high-speed mode is entered, the display element 3b is turned on.
is turned on, and when the low-speed snapshot mode is entered, the display element 3C is turned on. Single-shot high-speed mode is a frame shooting type in which the winding transmission system normally has a high speed reduction ratio, and automatically switches from high speed to low speed (single-shot automatic speed change mode) as the film winding speed decreases. The mode that changes, the quick-shooting high-speed mode, is continuous shooting, and the reduction ratio of the winding transmission system is usually high, and it automatically switches from high speed to low speed (quick-shooting automatic speed change mode) as the film winding speed decreases. mode,
The quick shooting low speed mode is a mode in which continuous shooting is performed and the reduction ratio of the winding transmission system is fixed at a low speed.

Assuming that the self-drive changeover switch la is switched to self-timer mode S, and the contents of register 2a are also one of the self-timer modes S, each time the selection switch tb is pressed, the control The means 2 alternately rewrites the contents of the register 2a between the self-timer 10-second mode and the self-timer 2-second mode. At the same time, when the self-timer enters the 10-second mode, the display element 3d lights up, and when the self-timer enters the 2-second mode, the display element 3d lights up.
Turn on e. The self-timer 10-second mode is a mode in which the self-timer time is 10 seconds, and the self-timer 2-second mode is a mode in which the self-timer time is 2 seconds.

When the self-drive changeover switch la is switched from the self-timer mode S to the drive mode D, the control means 2 rewrites the contents of the register 2a to the frequently used initial setting mode, single-shot high-speed mode, and lights up the display element 3a. let

Self-drive selector switch la is in drive mode D
When the mode is switched to the self-timer mode S, the control means 2 rewrites the contents of the register 2a to the self-timer 10-second mode, which is a frequently used initial setting mode, and lights up the display element 3d.

When the single shooting high speed mode is set, the control means 2 operates the drive circuit 4 when shooting is completed.

The hoisting motor M2 is rotated in one direction (for example, forward direction). As a result, the switching means 5 switches to the high-speed transmission system 6 having a high-speed reduction ratio (low reduction ratio), and the rotational force of the hoisting motor M2 is transmitted to the hoisting load 7 (including the film 8) via the high-speed transmission system 6. , the film 8 is wound at a relatively high speed.

When the hoisting load 7 is heavy, when the power supply voltage decreases due to the elapse of battery usage time or a drop in ambient temperature, the control means 2 controls the hoisting speed to be reduced by a signal from the detection means 9 that detects the rotation of a sprocket, etc. When determining this, the control means 2 causes the drive circuit 4 to rotate the hoisting motor M2 in the other direction (for example, in the reverse direction). As a result, the switching means 5 switches to the low speed transmission system lO having a low speed reduction ratio (large reduction ratio), the rotational force of the winding motor M2 is transmitted to the winding load 7 via the low speed transmission system 10, and the film 8 is relatively Winds up at low speed.

Then, the control means 2 rewrites the contents of the register 2a to the single-shot automatic speed change mode. At the same time, the display on the display means 3
The element 3a is made to blink. As a result, the display means 3 displays that the single-shot automatic speed change mode has been entered.

In addition, although the switching means 5, the high-speed transmission system 6, and the low-speed transmission system 1O constitute 2 in the hoisting transmission system, the high-speed transmission system 6 and the low-speed transmission system 1O may share a part of the reduction gear train, In that case, the switching means 5 is inserted in the middle of the transmission system 6.10.

When the high-speed shooting mode is set, when shooting is completed, the film is wound through the high-speed transmission system 6, and when the detection means 9 detects the completion of winding, the control means 2 outputs a motor stop signal to the drive circuit 4. However, the drive circuit 4 stops energizing the hoisting motor M2 and applies a brake. The control means 2 determines that the reduction ratio is high, and measures a predetermined certified time corresponding to the high speed reduction ratio. Then, the control means 2 certifies that the film has stopped by completing the measurement of the accredited time from the motor stop signal.

In the case of continuous shooting high-speed mode, after charging is completed, the release sequence is started without confirming that the film has stopped at the time of winding completion, and the operations before shutter opening, that is, automatic aperture and mirror up, are performed by the motor at the time of winding completion. Since it is carried out in parallel with the stopping stroke, after the motor stopping stroke,
The shutter is already in a state where it can be opened. Therefore, the control means 2 immediately starts shutter opening control for the shutter mechanism (not shown).

When the hoisting load 7 is heavy or when the power supply voltage decreases due to the elapse of battery usage time or a decrease in ambient temperature, automatic speed change is performed in the same way as in the single-shot high-speed mode.

At that time, the control means 2 rewrites the contents of the register 2a to the automatic speed change mode, and also changes the display element 3 of the display means 3.
Make b blink. As a result, the display means 3 displays that the automatic speed change mode has been entered. In this case, the display element 3C may be made to blink.

When the quick-shooting low-speed mode is set, upon completion of photography, the control means 2 outputs a motor stop signal in response to detection of completion of winding. Further, it is determined that the reduction ratio is low, and another certified time corresponding to the low speed reduction ratio is measured.

The control means 2 certifies that the film has stopped by completing the measurement of this accredited time from the motor stop signal. In the case of slow shooting mode, the release sequence is started after determining that the film has stopped. Note that in the continuous shooting high speed mode, when the reduction ratio is automatically switched from high speed to low speed, the same operation as in the quick shooting low speed mode is performed.

When the self-timer mode is set to 10 seconds mode or the self-type mode is set to 2 seconds mode, the camera operates in the same way as the continuous shooting low-speed mode when shooting is completed. If the shooting at that time is self-timer shooting, the press of the release button will be released immediately, resulting in -frame shooting; if the shooting is interval shooting, the release button will continue to be pressed, so it will be continuous shooting. Become.

If you consider drive mode D and self-timer mode S from an operational perspective, you will notice that they are mutually exclusive modes.In other words, if it is not self-timer mode S, -
It is either frame shot or continuous shooting. Also, in self-timer mode S, you can automatically switch to snapshot mode.
This is because, in general, in self-timer shooting, after the release button is pressed down and the self-timer starts counting, the release button is released, so whatever the drive mode D is, I have no choice but to
For special usage, if you want to take interval shots (for example, take pictures at 10 second intervals) in self-timer mode S, the release button is always pressed down, so you need to switch to quick-shot mode. Therefore, all self-timer modes S may be set to continuous shooting mode. Therefore, it is only necessary to set one of drive mode D and self-timer mode S.

In this way, by combining drive mode D and self-timer mode S, which have an exclusive relationship, selection switch tb can be used for switching between drive mode D and self-timer mode S. , it is possible to improve operability, space, and cost.

Further, since the set or automatically switched mode is stored in the register 2a and displayed on the display means 3, the selection switch lb has a switching position corresponding to the setting mode or automatic shift mode. There is no need to make a mechanical switch; it can be a simple momentary switch like a pushbutton switch, which is more advantageous in terms of operability, space, and cost.

Furthermore, when switching between drive mode D and self-timer mode S, the frequently used mode is initially set without operating the selection switch lb, making it easier to use.

In this embodiment, the self-drive changeover switch la is the first setting operation member of the present invention, and the selection switch 1b is the second setting operation member.

They correspond to each other.

In this embodiment, switching of the reduction ratio of 2 in the hoisting transmission system is performed by switching the rotational direction of the hoisting motor M2, but it may also be performed using a magnet or the like. It is designed to be able to switch to 31.+1 '+*-h L de) Jl
kl 洒-G, H-1, ascending ζ can also be used. The means for indicating automatic gear shifting is not limited to blinking one display element, but other optical means, audio means, etc. can also be used.

Further, the drive mode D may be of only two types, single shooting mode and continuous shooting mode, and the self-timer mode S may be of three or more types.

Examples of cameras embodying the embodiment shown in FIG.
As shown in the figure.

FIG. 3 is a diagram showing the arrangement of each motor when the camera is viewed from the front. Ml is a charge motor that controls the shutter charge, the aperture adjustment mechanism, the aperture drive mechanism, and the mirror lifting mechanism, and is arranged at the front left end of the camera 20. As for the charge motor Ml, load fluctuations due to environmental conditions are small, but since the absolute load is large, a relatively large motor is required, and is therefore housed in a grip 21 formed protruding from the front left end of the camera 20.

Kl is the charge transmission system for charge motor Ml
The winding motor M2 has a spool configuration 2 for winding the film.
The rewind motor M3 is located in the front right side of the camera 20, that is, on the cartridge side, and the rewind motor M3 is located adjacent to the rewind transmission system. . 23 is the power supply battery, which consists of four AA batteries. On the front right side of the lens, there is a self-drive selector switch 31'' as a setting operation member for setting the mode.
& selection switch 32 are provided.

These can be installed in any location that is easy to operate.
On the top of the camera body is a display 33 that displays the mode.
is provided. An indicator for displaying the mode may be provided in the viewfinder.

Figure 4 shows the arrangement of each motor when looking at the camera 20 from above.
FIG. 24 is Film Patrone, 25
26 is a blade-type longitudinal reshutter, 26 is a mirror elevating mechanism, 27 is a lens aperture adjustment mechanism, 28 is a lens aperture drive mechanism, and 29 is a sprocket configuration for determining the feed amount of the film 30.

FIG. 5 shows details of the charge motor Ml and the charge transmission system Kl.

Pinion gear 101 is fixed to the output shaft of charge motor Ml and meshes with gear 102. Gears 102 and 103 constitute a two-stage gear, and are rotatably supported by shafts 114 set on base plate 117. The gears 102 and 103 each have protrusions 102a that alternately protrude in the thrust direction.
, 103a are formed, and by fitting these protrusions 102a and 103a, the gears 102 and 103 mesh and interlock in the rotational direction, but can freely move relative to each other in the thrust direction. On the other hand, the gear 103 has a surface in contact with the planetary lever 106 that rotates about a shaft 114, and is brought into frictional contact with the planetary lever 106 by a compression spring 104 disposed between the gears 102 and 103. As a result, the planetary lever 106 rotates following the rotational direction of the gear 103.

The gear 105 has a shaft 115 mounted on the planetary lever 106.
The gear 107, which is rotatably supported by a shaft and is always in mesh with the gear 103, is rotatably mounted on a shaft 111 that is set on a base plate 117. The gear 103 rotates clockwise and the gear 105 rotates counterclockwise (
When the planet lever 106 rotates in the direction of the arrow), the planetary lever 106 rotates clockwise and the large gear 107a meshes with the gear 105.
The gear 108 is rotatably supported by a shaft 112 mounted on a base plate 117, and includes a large gear 108a and a small gear (not shown) fixedly formed on the upper part of the large gear 108a. The large gear 108a is always meshed with the small gear of the gear 107. The gear 110 is rotatably supported by a shaft 116 mounted on the planetary lever 106, and is always engaged with the gear 103. When the gear 103 rotates counterclockwise and the planetary lever 106 rotates counterclockwise, the gear 110 rotates counterclockwise. llO meshes with a large gear 108a, a cam gear 109 is rotatably supported by a shaft 124 mounted on a base plate 117, and a gear 109a and a cam 113 are formed. The gear 109a is always engaged with the small gear of the gear lO8, and the transmission system from the pinion gear lO1 to the cam gear 109 is switched depending on the rotational direction of the charge motor Ml. That is, when the charge motor M1 rotates counterclockwise, each part rotates in the direction of the solid line arrow, and the planetary lever 1
By clockwise rotation of 06, the rotation of binion gear lO1 → gears 102, 103 → gear 105 → gear 107 (large gear 1
07a, small gear) → gear 108 (large gear 108a, small gear) → cam gear 109. On the other hand, when the charge motor Ml rotates clockwise, each part rotates in the direction of the dotted arrow, and due to the counterclockwise rotation of the planet/<-106, the pinion gear 101 → gear 102, 103 → gear 110 → gear t
Oa (large gear 108a, small gear) is switched to a high speed gear train with a small reduction ratio consisting of cam gear 109. The two gear trains are set so that the cam gear 109 always rotates clockwise no matter which direction the charge motor Ml rotates.

The first shirt charger 8-118 is rotatably supported on a shaft 125 set on the base plate 117.

A rotatable roller 119 is attached to a shaft 118a at one end of one lever.
One end of the other lever is attached to the cam l 18b.
form. The roller 119 is the cam 113 of the cam gear 109
The first shutter charge lever 118 receives rocking motion that follows the cam displacement of the cam surface. This swing also causes the cam l 18b to swing. The second shutter charge lever 120 is connected to the main plate 1
It is rotatably supported by a shaft 127 installed at 17.

It has a roller 121 whose rotation axis is a shaft 120a.

The roller 121 is engaged with the cam 118b, and the swinging of the first shutter charge lever 118 allows the second shutter charge lever 120 to swing. and,
The second shutter charge lever 120 charges a known shutter mechanism (not shown).

The lever 122 is a lever that charges a known aperture adjustment mechanism, mirror elevating mechanism, lens aperture drive mechanism, etc., and is rotatably supported by a shaft 126 set on the base plate 117. The rotatable roller 123 is the shaft 12
2a, and this roller 123 engages with the cam 118c of the first shutter charge lever 118. Therefore, shi/<-122 is also il shutter charge lever 1
The diaphragm adjustment mechanism, mirror elevating mechanism, etc. are charged by the following oscillation caused by the oscillation of 18.

SO is a contact piece member that is fixedly attached to the cam gear 109, constitutes a switch with a pulse signal board (not shown) consisting of a comb-shaped conductive pattern, and detects a moment before the charging is completed by the charge motor Ml. .

Sl is also a similar contact member that constitutes a switch with the pulse signal board fixed to the cam gear 109, and is used to detect the completion of charging by the charging motor Ml.

FIG. 6 shows details of the hoisting motor M2 and the hoisting transmission system 2.

Binion gear 201 is secured to the output shaft of hoist motor M2 located within spool arrangement 22. The gear 202 is a two-stage gear having a large gear 202a and a small gear 2.degree. 2b, and is rotatably supported, and the large gear 202a meshes with the pinion gear 201. The gear 203 is a two-stage gear having a large gear 203a and a small gear 203b, and is rotatably supported, and the large gear 203a meshes with the small gear 202b.
04 is a two-stage gear having a large gear 204a and a small gear 204b, which are rotatably supported, and the large gear 204a meshes with a small gear 203b.A planetary lever 219a is further mounted on the center shaft of the second-stage gear 204 with a bearing 219b. The compression spring 220 is arranged between the small gear 204b and the bearing 219b, and the bearing 219b and the large gear 2
04a into frictional contact. This frictional contact causes gear 2 to
The planetary lever 219a follows and rotates according to the direction of rotation of 04. On the planetary lever 219a, there is a large gear 2.
A two-stage gear 205 having a large gear 208a and a small gear 205b, and a two-stage gear 208 having a large gear 208a and a small gear (not shown) fixedly formed on the F portion thereof are rotatably attached. A two-stage gear 20 is located near the gear 205.
6 is arranged, and the large gear 206a and the small gear 206b are independently rotatably supported. However, a coil spring 215 is arranged between the large gear 206a and the small gear 206b to provide the function of a one-sided clutch, and one end of the coil spring 215 is fixed to the post 206c of the large gear 206a, and the coil spring 215 is fixed to the post 206c of the large gear 206a. As the small gear 206b rotates, the coil spring 215 tightens the shaft of the small gear 206b, causing it to rotate together. Gear 207 is in constant mesh with small gear 206b and rotates sprocket arrangement 29 by shaft 216. The sprocket configuration 29 is a sprocket) 29a,
29b and a shaft 29c. Gear 207 has a total circumference of 1
When the pulse signal board P2 divided into two equal parts is fixed and the sprockets 29a and 29b rotate once, 12 pulses are obtained via the contact piece member S2. Therefore, the sprockets 29a and 29b have six teeth, and in a 35 mm full-size camera, one frame of film is fed by 4/3 rotation, so the number of pulses obtained via the armature member S2 is 16. Needless to say, it is possible to arbitrarily select an equal number of pulse signal substrates P2.

A two-stage gear 209 is arranged near the gear 208, has a large gear 209a and a small gear 209b, and is rotatably supported. The spool gear 210 is fixed to the spool 211 of the spool configuration 22 and rotatably supported, and is always engaged with the small gear 209b.The spool 211 has a rubber member 211a around its surface that promotes automatic winding of the film. It is pasted. Further, a cover 212 is disposed near the outside of the spool 211 and is rotatable by a shaft 213 provided on the fixed part of the camera.
The cover 212, shaft 213, and spring 214 are pressed toward the spool 211 side by the spool 211 by the spool 211, and have the function of promoting automatic winding of the film onto the spool 211. One set will be placed.

The rotation of the sprocket 29b is transmitted to the gear 217 by the coupled shaft, and further transmitted to the detection gear 218 that meshes with the gear 217. The ratio of the number of teeth between gear 217 and detection gear 218 is 3:4. A pulse signal board P3 that generates one pulse per rotation is fixed to the gear 218, and the pulse is obtained via the contact members S3 and S4. The armature member S3 is provided a predetermined phase ahead of the armature arm S4, and the drive of the hoisting motor M2 is switched to duty drive by the pulse output from the armature member S3 to lower the rotation speed. When the hoisting motor M2 is braked by a pulse from the armature member S4, it is stopped immediately.

If the winding motor M2 is controlled by a pulse generated during one rotation of the detection gear 218, one frame of film will be fed in a 35 mm full size camera. Naturally, the ratio of the number of teeth between the gear 217 and the detection gear 218 is set to 3:2, or the ratio of the number of teeth remains at 3:4,
If the pulse signal board P3 is divided into two equal parts and one pulse is generated every 180 degree rotation, the amount of film feed per time can be reduced to half size. Further, in this case, if the winding motor M2 is stopped when two pulses are counted, it is possible to make the film feed amount the full size. Furthermore, by making it possible to switch the number of pulses counted between 1 and 2, full size and half size can be easily accommodated.

Describing the transmission of rotational force of the hoisting motor M2 0 When the hoisting motor M2 rotates counterclockwise, each part rotates in the direction of the solid line arrow, the gear 204 rotates clockwise, and the planetary lever 219a rotates clockwise. Let small gear 205
b is engaged with the large gear 206a, and the gear 208
The small gear meshes with the large gear 209a. Therefore, the rotation of the hoisting motor M2 is as follows: pinion gear 201 → gear 202 (large gear 202a, small gear 202b) → gear 203 (large gear 203a, small gear 203b) → gear 20
4 (large gear 204a, small gear 204b) - gear 205 (
Large gear 205a, small gear 205b) → gear 206 (large gear 206a, small gear 206b) → gear 207 + sprockets 29a, 29b at a low speed reduction ratio.
) → Gear 208 (large gear 208a, small gear) → Gear 2
09 (large gear 209a, small gear 209b)→spool gear 210→spool structure 22 at a low speed reduction ratio.

On the other hand, when the winding motor M2 is rotated clockwise, each part rotates in the direction of the dotted arrow, the gear 204 rotates counterclockwise, rotates the planetary lever 219a counterclockwise, and rotates the large gear 205a. It meshes directly with the spool gear 210. Therefore, pinion gear 201 → gear 2
02 (large gear 202a, small gear 202b) - gear 20
3 (large gear 203a, small gear 203b) - gear 204 (
Large gear 204a, small gear 204b) - large gear 205a→
The transmission is switched to a high-speed transmission system with a small reduction ratio consisting of the spool gear 210. In addition, sprocket) 29a, 29b
The transmission system to is cut off, and the sprockets 29a and 29b become free to rotate.

As described above, the transmission system of the spool configuration 22 directions of the 1 winding motor M2 has two types of reduction ratios depending on the rotation direction of the winding motor M2. Specifically, when rotating in the counterclockwise direction, a low speed reduction ratio is obtained, and when the winding motor M2 rotates in the counterclockwise direction, a low speed reduction ratio is obtained. A clockwise rotation results in a high speed reduction ratio. However, in either direction of rotation, the spool arrangement 22 always rotates counterclockwise.

Note that during automatic film loading, the winding motor M2 is rotated counterclockwise, the reduction ratio of 2 in the winding transmission system is switched to the low speed side, and the sprocket structure 29 and the spool structure 22 are rotationally driven at low speed. At the time of frame advance after each subsequent shot, if the single-shot high-speed mode or quick-shot high-speed mode is set, and under normal conditions, the winding motor M2 is rotated clockwise and connected to the winding transmission system. 2 is switched to the high speed side, and only the spool structure 22 is driven to rotate at high speed.

During frame feeding, when the reduction ratio is automatically switched from high speed to low speed according to the power supply state or load state, the winding motor M2 is rotated counterclockwise, and the sprocket structure 29 is rotated counterclockwise.
Both the spool configuration 22 and the sprocket configuration 22 are rotationally driven, but since the reduction ratio of the transmission system is set so that the circumferential speed of the spool configuration 22 is greater than the circumferential speed of the sprocket configuration 29, the sprocket configuration 29 is driven by the spool configuration. 1 is not a problem since it is driven by the film being wound on the spool arrangement 22, so the sprocket arrangement 29 drives the film only when the film is not being wound by the spool arrangement 22, but otherwise the direction of rotation of the winding motor M2 follows the film regardless of the

FIG. 7 shows details of the rewind motor M3 and the rewind transmission system 3.

Pinion gear 301 is fixed to the output shaft of rewind motor M3. The gear 302 includes a large gear 302a and a small gear 302.
A two-stage gear with b, rotatably supported, and large gear 3
Gear 303 is a two-stage gear having a large gear 303a and a small gear 303b, and is rotatably supported, and the large gear 303a meshes with the small gear 30.
2b, the planetary lever 306 is rotatably supported on the same axis as the gear 303, and the compression spring 305 is connected to the small gear 3.
03b and the planetary lever 306, and brings the planetary lever 306 and the large gear 303a into frictional contact. Due to this frictional contact, the planetary lever 306 rotates in accordance with the direction of rotation of the gear 303. Planetary lever 306
A two-stage gear 304 having a large gear 304a and a small gear 304b is rotatably attached to the tip. The gear 307 is attached to one end of the shaft 307b with a screw 307a, and the fork 308 is attached to the other end of the shaft 307b. Fork 308 is cartridge storage chamber 310
It is arranged to protrude inside and is configured to mesh with a winding shaft of a film cartridge (not shown). A coil spring 309 is disposed between the receiving washer 3070 on the shaft 307b and the fork 308, and the fork 308 can be temporarily retracted so that the film cartridge can be easily stored in the cartridge storage chamber 310. There is.

When the rewind motor M3 rotates clockwise, the gear 303
rotates clockwise to rotate the planetary lever 306 clockwise to engage the small gear 304b with the gear 307,
Therefore, pinion gear 3゜l → gear 302 (large gear 30
2a, small gear 302b) - gear 303 (large gear 303a)
, small gear 3° 3b), gear 304 (large gear 304a, small gear 304b) → gear 307 → fork 308, and rotational force is transmitted. On the other hand, when the rewind motor M3 rotates counterclockwise, the planetary lever 306 rotates counterclockwise, the meshing between the small gear 304b and the gear 307 is cut off, and the rotational force is transferred to the fork. Therefore, by slightly rotating the rewind motor M3 in a counterclockwise direction, the rewind transmission system is transmitted with the rewind motor M3 and the rewind motor
3 can be prevented from being added to the hoisting load.

Film winding is possible with low load.

Figure 8 shows a microcomputer COM as control means 2.
A specific example of an electric circuit in which this is used is shown below.

The light receiving element SPC receives reflected light from the subject, and inputs the received light signal to an operational amplifier OPl having a high input impedance and having a compression diode DI connected to a feedback circuit. The operational amplifier OPI outputs logarithmically compressed object brightness information By via a resistor R1. Variable resistors VR1 and VH2 connected to constant voltage sources V and Gl output film sensitivity information Sv and aperture value information Ay. The operational amplifier OP2 to which the resistor R2 is connected to the feedback circuit receives the shutter time information Tv=
(By+5v-Ay) is calculated and output. The shutter speed information Tv is converted into a 4-bit digital value by the A/D converter ADC, and displayed on the display device DSP in the viewfinder via the decoder driver DCD.
Enter. In addition, the 4-bit code 0001-10
00 corresponds to l/1000 seconds to l/8 seconds, code 00
00 and 1001 or higher correspond to warning display elements.

When the first stroke switch swl connected to the input port PF7 is turned on by the first stroke of the release button, the potential of the output port PE3 becomes high level, so the transistor TRI is turned on by the inverter If and the resistor R3, and the battery The voltage from vbt is supplied to each circuit as the power supply voltage Vcc.The arrow ↑ in the diagram indicates V
cc, and the power supply voltage Vcc is naturally supplied to circuit blocks not marked with an arrow ↑, such as operational amplifiers and A/D converters. Note that another power supply voltage VDD is supplied to the microcomputer COM, decoder LDEC, and display LCD.

A capacitor Cr is connected to the terminal R3T of the microcomputer COM, and a crystal oscillator QZ is connected to the terminals XO and Xi.
is connected, a power supply voltage vDD is applied to the terminal VDfl, and the terminal GND is grounded.

The input boats PAO to PA3 have the second release button.
A second stroke switch 5 that is turned on by a stroke
W2, mirror up switch that turns off when the mirror is up and turns on when the mirror is down, front curtain switch that turns off when the front curtain is completed, and turns on when charging is completed! I
WcNI is connected to a trailing curtain switch 5wCN2 which is turned off when the trailing curtain travel is completed and turned on when charging is completed.

Input capo) PFO to PF4 have pulse signal board P2.
and a first film switch swFLML, which includes a contact member S2 (FIG. 6), a pulse signal board P3, and a contact member S
A second film switch consisting of 3 (Fig. 6)
LM2, a third film switch swFLM3 consisting of a pulse signal board P3 and a contact member S4, and a cam gear 1.
09 (Fig. 5), the first charge switch swCGE1 is made up of a pulse signal board and a contact piece SO, and is turned on just before charging is completed. The second charge switch swCGE2, which is turned on upon completion, is connected. Further, a self-drive changeover switch 5wM0DE is connected to the input capacitor PF5, which is turned off when the self-timer mode S is set and turned on when the drive mode D is set. Input boat PF6 is pressed when the self-timer (2 seconds, 10 seconds) in self-timer mode S or the mode (single shooting high speed, quick shooting high speed, continuous shooting low speed) in drive mode D is selected. Push button type selection switch s wS TE P
is connected.

Output ports PE0-PE2 include transistors TR2-T.
The base of R4 is connected, and the transistors TR2 to TR4
controls the energization of the first tension magnet MGO1 made of permanent magnet material that starts the mechanical release operation; the leading curtain magnet MGl that causes the leading curtain to run; and the trailing curtain magnet MG2 that causes the trailing curtain to run.

A drive circuit DR2 that drives the hoisting motor M2 is connected to the output ports PBO and FBI, and the output ports PCO and P
A drive circuit DR3 that drives a rewind motor M3 is connected to CI, and a drive circuit DRI that drives a charge motor M1 is connected to output ports PDO and PDI.

The drive circuits DRI-DR3 have the same circuit configuration, and the circuit configuration is shown in FIG. 2 for input terminals A and H
A bit signal is input. First, if A = l and B = 0, the signal at input terminal B is inverted by inverter IIO, so the output of AND gate A12 becomes 1, the output of OR game FORI O also becomes l, and transistor TR32 is turned on. do. Further, since the output of the input terminal 113 becomes O, the transistor TR31 is also turned on. Therefore, the power supply voltage Vcc is applied to the motor M, a current flows, and the motor M rotates in a predetermined direction.

When A=O, B=1, the signal at input terminal A is inverted by inverter Ill, so the output of AND gate AIO becomes 1. The output of OR gate 0RII is also l, inverter I
Since the output of transistor TR3 becomes 0,
0, TR33 is turned on, current flows in the opposite direction to the motor M, and the motor M rotates in the reverse direction.

A=1. When B=1, the output of AND gate All is 1
, the outputs of the OR gates 0RIO and 0RIl also become 1, so that the transistors TR32 and TR33 are turned on.

Therefore, if this mode is set while the motor M is rotating, the diode 010. Dll and transistors TR32 and TR33 cut off the current even if the motor M is rotating in either direction, short-circuit the terminals, and apply a brake to the inertial rotation of the motor M.

A=0. When B=O, AND gate AIO~A12
All outputs become 0, and transistors TR3O-TR
33 are all turned off, and the motor M is in an open state.

Returning to the explanation of FIG. Outcapo) PLO~PI.

From 3 onwards, register R in microcomputer 00M
A 4-bit binary signal of L is output, and the output signal (CLK) is output.
From OUT, a low frequency clock pulse of about 2 Hz, which is obtained by dividing the fundamental frequency of the crystal oscillator QZ, is output. A decoder LDEC is connected to these output ports, and the decoder LDEC is connected to a display LCD composed of a liquid crystal or the like.

The details of the decoder LDEC and the display LCD are shown in FIG. 1θ. The decoder LDEC is a binary-hexadecimal decoder DEC.
, ANDGATE A21. A22 and or gate 21,0
Consists of R22. The binary-hexadecimal decoder DEC has the first
As shown in Figure 1, a 4-bit binary signal is converted into a hexadecimal signal, and the display device LCD lights display elements Ll-L5 or blinks 0 display element L1 by inputting a hexadecimal signal. Blinking indicates single-shot automatic shifting, and blinking of display element L2 indicates continuous-shooting automatic shifting. The OR gate 0R22 may be connected as shown by the dotted line in FIG. 10, and the continuous shooting automatic speed change may be displayed by blinking the display element L3.

The operation of the microcomputer COM will be explained with reference to flowcharts shown in FIGS. 12-14.

The microcomputer COM operates by being supplied with the power supply voltage vDD. A basic clock is supplied from the crystal oscillator QZ, and at the same time a power-on reset is applied by the capacitor Cr.

The built-in program counter is initially set to address O,
The program begins from the start. Further, it is assumed that all flags are 0 and the output port is also 0.

``Stay, P1] If the human power from the boat PF77I+ (man-11, PF77I+) is input (hereinafter referred to as PF7 human power, the same applies to other ports), and the first stroke switch SWl is turned on, go to step 2. When it is off, the process proceeds to the mode processing shown in FIG. 14, respectively.

[Step 21: Output a high level signal from the output capo-hPE3, turn on the transistor TRI (FIG. 8), and supply the power supply voltage Vcc to each part.

[Step 3] PA large input is input. If each part is fully charged and the photographer presses the second stroke of the release button, PAO=PA1=PA2=PA
Since 3=O, the PA large input hexadecimal value becomes OOH. If the PA large input is OOH, enter the release sequence and proceed to step 4; otherwise, return to step l.

That is, when only the first stroke switch swl is on, steps 1 to 3 are repeated to perform photometry and display.

[Step 4] The apex value Tv of the shutter speed converted into a 4-bit digital value by the A/D converter ADC (the PG large input is converted to a 4-bit digital value by the microcomputer CO
It is stored in register RG inside M.

[Step 5] Branch command based on the 4th bit data (see Figure 11) of the internal register RL of the microcomputer COM. If the 4th bit data is 1,
Since it is in self-timer mode, proceed to step 6 and set 0.
If so, proceed to step 9.

[Step 6] Branch instruction based on the 1st bit data of register RL. If the 1st bit data is O,
Since the self-timer seconds are 10 seconds, proceed to step 7, and if it is l, the self-timer seconds are 2 seconds, so
Proceed to step 8.

[Step 7] The timer measures 10 seconds.

[Step 8] The timer measures 2 seconds.

[Step 9] The PEO output is set to 1, the transistor TR2 (FIG. 8) is turned on, and the first clamping magnet MGO is energized from the capacitor CO charged to approximately the same voltage as the power supply voltage Vcc. This activates the mechanical release operation. Thereafter, a waiting time TIMEI is created using a fixed time timer. Due to time up, P
The EO output is set to 0 and the first tension magnet MGO is de-energized. This waiting time TIMEI may be set to be slightly longer than the minimum time during which the first vJg constant magnet MGO is energized.At this point, a known mechanical sequence of narrowing down and mirror up is started.

[Step 101 This is a routine to wait for a time until the mirror is raised. When the mirror is raised, the routine advances to step 11. This routine is provided to operate the shutter after confirming that the mirror is raised.

[Step 11] Determine flag FO. FO=1
indicates the end of the film.

[Step 12] Determine flag Fl. Fl=0
indicates that the film has stopped at the end of winding.

[Step 13] The contents of the register RG, which stored the shutter time in Step 4, are converted into data in a multiple series value. Since the value stored in register RG has been logarithmically compressed, this is a routine for expanding the data to match the actual control value.

[Step 14] Set the PEI output to 1 and energize the leading magnet MG1. At this stage, the leading curtain starts running.

[Step 15] A real time count is performed using the data expanded in Step 13, and the calculated shirt time is measured.

[Step 16] Set the PE2 output to 1, energize the trailing curtain magnet MG2, and run the trailing curtain. with this,
Focal plane shutter control ends. The time T required for the trailing curtain to complete its run using a fixed timer
Create IME2, then set PE1=PE2=O,
De-energize leading curtain magnet MCI and trailing curtain magnet MG2.

[Step 17] This is a routine that waits for the trailing curtain switch 5wCN2 to be turned off, that is, the trailing curtain has completed running. When running is completed, the routine advances to step 18.

[Step 18] Determine whether the contents of register RL are smaller than 2 or greater than or equal to 2. From Fig. 11, if it is less than 2, it means that the mode is single shooting high speed mode or continuous shooting high speed mode, so the speed reduction ratio is high speed in both cases, and the process goes to step 19. Since this is a case where the ratio is low, the process advances to step 22.

[Step 19] PDO=0. By setting PD1=1, the drive circuit DRI is operated and the charge motor Ml is rotated in a direction in which the reduction ratio of the charge transmission system Kl (FIG. 5) becomes high speed.

This allows the shutter, mirror, automatic aperture, etc. to be charged at high speed.

[Step 201 PBO=0. By setting PB1=1, the drive circuit DR2 is operated to rotate the 1st hoisting motor M2 in the 1st hoisting transmission system in the direction in which the reduction ratio of 2 (FIG. 6) becomes high speed. This allows the film to be wound at high speed.

[Step 21] A constant PI for a high-speed reduction ratio is stored in a register RP related to duty control immediately before the completion of hoisting, and a constant Ml for a high-speed reduction ratio is stored in a register RM related to detection of a decrease in hoisting speed.

[Step 22] By setting PDO=1 and PDl=0, charge motor Ml is rotated in a direction in which the reduction ratio of charge transmission system Kl becomes low speed.

[Step 23] By setting PBO=l and PB1=0, 1 hoisting motor M2 is connected to 2nd hoisting motor M2 in the hoisting transmission system.
Rotate in the direction that reduces the speed reduction ratio.

[Step 24] Store constant P2 for low speed reduction ratio in register RP, and store constant M for low speed reduction ratio in register RM.
Memorize 2.

[Step 25] Set a constant RI to register RD related to the detection of winding speed decrease during the duty control period, set constant S to register R5 related to the authorized time of film stop, set the contents of register RM to register RMM, and set register RFP.
For example, in the case of a high-speed reduction ratio, the contents of register RMM are stored as a constant M.
1, and in the case of a low speed reduction ratio, it becomes a constant M2.

Flag FO=F2=0. Set Fl=1.

Setting Fl=1 means that the winding operation will start now. Flag F2 is the first film switch swF
It represents the on/off state of LM1.

[Step 26] Timer TM for timer interconnected
Set constant K to H. The values of are determined by the film winding speed, the equal fraction of the pulse signal board P2 (FIG. 6) of the first film switch swFLML, and the microcomputer C.
It is a constant determined by the OM instruction cycle time.

Start timer TMR for timer interconnected. It also allows timers to be interacted with. (EN
T) Since the timer TMR has started, from now on, the timer TMR repeats decrementing independently of the main program routine, and an interlude is applied at a fixed time interval (depending on the constant K). Jump to address. Here, timer interrelated processing will be explained with reference to FIG. 13.

"Timer interwoven processing J [Step lot] Stop the decrementing operation of timer TMR and prohibit interworking.

[Step 102] PF2 manual power is input from the third film switch swFLM3, which is turned on each time the winding of one frame of film is completed. here.

Assuming that the winding motor M2 has already been driven in step 20 or 23, and that the third film switch FLM3 is turned off at the first timer interrupt, step 1
Proceed to 03.

[Step 103] The second film switch swFLM2, which performs branching in response to the PFI input from the second film switch SWFLM2, which is turned on just before the winding of one frame of film is completed, decelerates the winding motor M2 just before the winding is completed, and performs stop control. In this embodiment, deceleration is performed by duty control, but deceleration may also be performed by low voltage. Proceed to step 104.

[Step 104] A branch is performed by the PFO input from the first film switch sw FLM, which is repeatedly turned on and off during film winding. Now, PFO=0
Assuming that, the process proceeds to step 105.

[Step 105] Determine flag F2. Since F2=0 is set in step 25, the process proceeds to step 106.

[Step 106] The contents of register RMM are subtracted by 1, and the contents are stored in register RMM again.

[Step 107] Determine RMM=0. In the program up to now, RMM=Ml (M2)-1, so if the constant Ml (M2) is a relatively large value, it will not become O, and the process proceeds to step 108.

[Step 108] Reset the constant K in the timer register, start timer TMR, and enable timer-interrupted processing.

[Step 109] Return to the original program being executed.

In the timer-interrupted process, three film switches SwFLM1 and sw are activated from the running program at regular intervals.
The purpose is to determine the status of FLM2 and swFLM3. Since each instruction of the program itself is executed at a very high speed, it is assumed that there is virtually no problem by inputting the film winding information at regular intervals.

Now, suppose that the first film switch swFLMt is turned off in a certain timer-interrupted process, step 104
The process then proceeds to step 110.

[Step 110] Determine whether flag F2=1. Since F2=0 was set in step 25, the process advances to step 111.

[Step l11] Set flag F2 to 1.

This means that the first film switch s w F L M l has been turned off, that is, PFO=1.

[Step 112] If it is determined in step 105 that F2=1, the 7-lag F2 is set to 0 here in order to match the contents of the flag F2 with the ON state of the first film switch swFLM1.

[Step 113] The contents of register RM are set in register RMM again. Thereafter, the process proceeds to step 108, and the above-mentioned routine is executed. Assume that the winding has been carried out for a while, and now it is just before the l-body winding. At this time,
When the I82 film switch Sw F L M 2 is turned on (7), PF1=O, and the process proceeds from step 103 to step 114.

[Step 2 114] It is determined whether the contents of register RFP are smaller than a constant P or greater than P. register RF
P is used to adjust the duty ratio of duty control. As explained in steps 21 and 24.25, initially, the contents of register RFP are constant pt (for high speed reduction ratio) or P2 (for low speed reduction ratio), and these values are set larger than constant P. Therefore, the process first proceeds to step 115.

[Step 115] PBO=1. Set PB1=1. As a result, the power supply to the hoisting motor M2 is cut off and the brake is applied. [Step 11B]
Subtract 1 from the contents of register RFP and store the value in register RFP again.

[Step 117] Subtract 1 from the contents of register RD and store the value in register RD again. Register RD is used to detect the end of the film during the duty control period, and is set to a constant value in step 25.

The constant value is set to a somewhat large value.

[Step 118] Determine whether the contents of register RD are 0. Since it is not 0 at first, the process advances to step 10B and the above-mentioned routine is executed.

After performing several timer-interrupted processes, if the contents of register RFP become smaller than the constant P, step 11
4, the program branches to step 119.

[Step 119] Determine whether the contents of register RL are smaller than 2 or greater than or equal to 2. Referring to Figure 11,
If it is less than 2, it is a high speed reduction ratio, so the process goes to step 120, and if it is 2 or more, it is a low speed reduction ratio, so the process goes to step 121.

[Step 1203 By setting PBO=O and PBl=1, 1 hoisting motor M2 is connected to 2nd hoisting motor M2 in the hoisting transmission system.
It is rotated in the direction where the reduction ratio (Fig. 6) becomes high speed to perform high-speed winding.

[Step 121 PBO=1. By setting PB1=O, the hoisting motor M2 is rotated in a direction in which the reduction ratio of 2 in the hoisting transmission system becomes low, thereby performing low-speed hoisting.

[Step 122] Determine whether the contents of register RFP are 0. If it is not 0, proceed to step 116 and execute the routine described above. When it becomes 0, the process advances to step 123.

[Step 123] Register in register RFP
'The contents of RP (constant Pi or P2) are stored again.

In this way, the duty control is performed by putting the value in the register RFP and setting it once every timer interrupt (every fixed period of time).
When the contents of the register RFP are equal to or greater than the constant 2, the current to the hoisting motor M2 is cut off and the brake is applied; when it is smaller than the constant P, the current is applied to the hoisting motor M2, and when it becomes 0, the current is applied to the hoisting motor M2. A method is used in which the original value is stored in the register RFP and repeated. Therefore, the duty ratio is determined by the constant of the timer TMR and the constant PL or P2 set in the register RFP, and does not depend on the on/off state of the first film switch swFLM1.

In addition, at high speed reduction ratio and low speed reduction ratio, step 21
．． Since the contents of the register RP are changed in step 24, the duty ratio can be selected independently. Furthermore, if the constant P2 is set to a value smaller than the constant P, for example 0, the process will always proceed from step 114 to step 119, so duty control can be avoided at low speed reduction ratios.

Now, the deceleration rotation of the winding motor M2 continues to be executed, and l
When the body winding is completed, the third film switch swFL
M3 turns on. At this time, the timer-interrupted process branches from step 102 to step 124.

[Step 124] PBO=1. Set PBl=1. As a result, the hoisting motor M2 is energized and regenerated, and the brake is applied.

[Step 2 125] Similarly to step 119, it is determined whether the contents of register RL are less than 2 or greater than 2. When the reduction ratio is high, the process proceeds to step 126, and when the reduction ratio is low, the process proceeds to step 127.

[Step 126] The constant St for high-speed reduction ratio is subtracted from the contents of the register R5, which was first set to the constant S in step 25, and the result is stored in the register R3 again. The register R5 is used to set the authorized time T and T2 from the stop signal of the winding motor M2 until the film is determined to have stopped at a high speed reduction ratio and at a low speed reduction ratio.

[Step 127] Similarly to step 126, subtract the constant 52 for low speed reduction ratio from the contents of register R5,
It is stored in register R3 again.

[Step 128] Determine whether the contents of register RS are less than 1 or greater than or equal to 1. If it is 1 or more, it means that the certified time T1 or T2 has not passed yet.
Proceed to step 108 and execute the routine described above. l
If it is smaller, it means that the certified time T1 or T2 has elapsed, and the process advances to step 129.

[Step 129] It is determined that the film has completely stopped, and the flag Fl is set to 0.

Regarding steps 124 to 129, since the inertia of the hoisting transmission system is different between high speed reduction ratio and low speed reduction ratio,
Although the stabilization time from when the stop signal of the winding motor M2 (step 124) is issued until the film completely stops varies, the recognized time from the stop signal of the winding motor M2 until the film is recognized as stopped is correspondingly different. T,,T
2 (from step 124 to step 129) are made different by separately determining the constants Sl and S2. Therefore, when the inertia is low at a high speed reduction ratio, the film can be determined to have stopped in a shorter time than at a low speed reduction ratio where the inertia is large, and it is possible to proceed to the first operation.

After step 129, the process returns to step 109 to return to the program being executed. Here, since step 1O8 is not passed, no timer interaction occurs thereafter.

Next, let us consider a situation where the power supply voltage decreases while the winding motor M2 is being driven, or the film winding speed decreases due to a temperature change even though a high speed reduction ratio is set.

As the film winding speed decreases, the time interval at which the first film switch FLMI is turned on and off becomes longer. However, since the timer interrupt takes a certain period of time, step 105 or step 11
The number of routines that proceed from 0 to step 106 increases, and finally the contents of register RMM become 0. In this way, a decrease in film winding speed is detected. In this case, proceed from step 107 to step 130.
The value of the register RM that initializes the register RMM needs to be determined independently for the high speed reduction ratio and the low speed reduction ratio because the film winding speed is different, so a different constant Ml is set in step 21.24. , M2.

The timeout routine for detecting a decrease in film winding speed, consisting of steps 104-107 and 110-113, is not used during the duty control period, because the last step 116 of the duty control routine
, 123, if this timeout routine is continued, the number of program steps for timer-interrupted processing will increase, and the time required to return to the main routine will become longer.For example, the timing of applying the brake of the charge motor Ml will be delayed. This is because problems may occur in the program being executed.

Therefore, during the duty control period, step 11
7,118, when the entire duty control period becomes longer than the time depending on the initial setting constant of the register HD, it is determined that the film winding speed has decreased,
The process branches to step 130.

[Step 130] It is determined whether the contents of the register RL are smaller than 2 or larger than 2, that is, whether the reduction ratio is high or low. When the reduction ratio is high, the process proceeds to step 131, and when the reduction ratio is low, the process proceeds to step 132.When the reduction ratio is high, the process proceeds to step 132.
When the film winding speed decreases, film winding becomes possible by switching the reduction ratio from high speed to low speed. If the film winding speed decreases at a low speed reduction ratio, as long as the power supply voltage that allows camera exposure control is maintained, assuming there is sufficient film winding speed at the low speed reduction ratio, when the film ends Only.

[Step 1311 Second charge switch CGE2
Determine the PF4 manual power that indicates the state of. If charging has not been completed, the process advances to step 133; if charging has been completed, the process advances to step 134.

[Step 132] When you have proceeded to this step,
Since this is the time when the reduction ratio is low and the film winding speed has decreased, this is the case when the film has finished, as explained in step 130. Therefore, PBO=0.
By setting PBl=0, both terminals of the hoisting motor M2 are opened. Also, a flag FO is set to 1 to indicate the end of the film. After this, the process proceeds to step 109, so no tire interference is required from this point on.

[Step 133] Since charging is not completed, by setting PDO=1 and PO2-4,
The charge motor Ml is rotated in a direction to switch the reduction ratio of the charge transmission system Kl (FIG. 5) to a low speed, and charging is performed at a low speed.

"F-r-,-/l*A1PRn=
By setting I −P l'l l = O,
The hoisting motor M2 is rotated in the direction of switching the reduction ratio of 2 (FIG. 6) to a low speed in the hoisting transmission system, and the hoisting is performed at a low speed.

[Step 135] Since the reduction ratio was automatically switched from high speed to low speed in steps 133 and 134, the third bit of register RL (FIG. 11) is set to 1 to change to automatic speed change mode. At the same time, the contents of register RL are output from output ports PLO to PL3 to decoder LDEC. As a result, the display element L1 or L2 (FIG. 1θ) of the display device LCD flashes to indicate that the automatic gear shift mode has been switched.

Since the reduction ratio has been switched to low speed, constant P2 for low speed reduction ratio is set in register RP, and register RFP is initialized to constant P2. Similarly, set constant M2 for low speed reduction ratio in register RM, and set register RMM to constant M2.
Initialize to .

Further, the process proceeds to step 108, where the register HD is initialized to a constant value, and the above-mentioned routine is executed.

The above-described timer-interrupted processing is always executed from step 26 of the main routine to step 12 of the next photographing, and accurately executes film winding control.

Returning to the description of the main program routine.

[Step 27] First charge switch swCGEL
Determine the PF3 manual power connected to.

Just before charging is complete, press the first charge switch sw.
Wait until cGE1 is turned on and proceed to step 28.

[Step 281: Determine whether the contents of the register RL are less than 2 or greater than 2, that is, whether the reduction ratio is high or low.

If it is a high speed reduction ratio, go to step 29.

When the speed reduction ratio is low, the process proceeds to step 30, respectively.

[Step 29] Since it is a high speed reduction ratio, power to the charge motor M1 is cut off and the brake is applied. This is to prevent charge motor M1 from continuing to rotate due to inertia and overcharging when charging is completed and the brake is applied to charge motor M1, since charging is performed at high speed. The brake is applied so that the charging system stops exactly when charging is complete.

[Step 30] The second charge switch s indicates that charging of the shutter, mirror, automatic aperture, etc. is completed.
Waiting for the input of a 0 signal from wCGE2, the process proceeds to step 31. Of course, timer interrelated processing is performed many times while waiting for charging to be completed.

[Step 311 Set PDO engineering PDl=1.

This energizes the charge motor Ml, performs a pilgrimage, and applies the brakes.

[Step 32] A flag FO indicating the end of the film is determined. Assuming that the film has not yet finished, the process proceeds to step 33.

[Step 2 33] It is determined whether the contents of the register RL are 1, that is, whether the continuous shooting high-speed mode is in effect. If you are in quick shooting high speed mode, NEXT (step 3)
Jump to. From step 3, the shooting sequence proceeds as described above, but what should be noted here is that the film stop recognition (flag F l
= 0), and in step 9 the first clamping magnet (MGO) is energized. In other words, for actual shooting, the aperture and mirror close-ups that are not directly related to
This is done regardless of whether the film is stopped at the end of winding, thereby speeding up the process. Thereafter, in step 10, mirror up is confirmed, and in step 12, confirmation of film stoppage upon completion of winding is confirmed. Until now,
The timer interrupt takes many times, and if it is recognized that the film has stopped when winding is completed, the process proceeds to the next shutter release control.If it comes to step 12 and the film has not been recognized as stopped when winding is completed, then , step 11
．． 12 loops are repeated and 0 or more routines are for the continuous shooting high-speed mode, which waits for the film to be stopped in the timer-interrupted process.

"F -; -, -f!Z IL 1
Temperature Δ waits until the film stop is certified at the completion of winding (until flag F1 becomes 0).

[Step 35] It is determined whether the contents of the register RL are 5, that is, the automatic speed change mode for quick shooting. If it is in the quick-shot automatic shift mode, jump to NEXT (step 3). Otherwise, proceed to step 36.

[Step 2 36] It is determined whether the contents of the register RL are 2, that is, the quick-shot low-speed mode. If it is in quick-shot low-speed mode, jump to NEXT. Otherwise, proceed to step 37.

[Step 37] Determine whether the 4th bit of register RL is 1, that is, self-timer mode. If in self-timer mode, jump to NEXT. Otherwise, the process proceeds to step 38, and the self-timer mode becomes the same routine as the continuous shooting low speed mode.

[Step 38] Determine PF7 manual power indicating the state of the first stroke switch SW1, wait for the first stroke switch swl to turn off, and return to 5TART. This step comes in case of single shooting high speed mode or single shooting automatic transmission mode, so the first stroke switch s
Wait until wl is turned off, that is, the release button is released.

In this way, when shooting continuously and the reduction ratio is low, unlike when using a high reduction ratio, the camera is able to stop the film after completing the first winding before starting the next release sequence. Abnormal movements can be prohibited. In other words, during continuous shooting at a low speed reduction ratio, it takes a relatively long time to confirm that the film has stopped, so if you start the release sequence without confirming that the film has stopped, the shutter will open only after the mirror has been raised. This takes too much time and gives the photographer an unusual feeling, but steps 34 to 36 can prevent this.

Next, let us consider a case where the film ends midway through winding.

In this case, the flag F0 is set to 1 in the time interwoven process, so the process branches from step 32 to step 39.

[Step 39] PCO=0. Set PCI=1,
The rewind motor M3 is energized via the drive circuit DR3 to start rewinding.

[Step 40] Set constant M3 in register RM.

[Steps 41 to 48] Steps 104 to 13 in FIG.
This program is similar to the program for detecting film movement explained in 107, 110 to 113, and is a program that detects that the ON/OFF state of the first film switch swFLMl is no longer reversed when rewinding is completed. Once completed, the process advances to step 49.

[Step 49] Set PCO=1 and turn rewind motor M
Stop the rotation of step 3.

[Step 50] Set the flag FO indicating the end of the film to 0.
Reset to .

[Step 511 Set the third bit of register RL to 0. In other words, if the automatic gear shift has been selected, the automatic gear shift is canceled upon completion of rewinding.

This is because the photographer originally set the mode to single-shot high-speed mode or quick-shot high-speed mode, and if the film is changed or the external environment (especially temperature) changes, the next time the film is taken, the film will be advanced at a high speed reduction ratio. This is because it is more effective to return to the initial setting mode. After this, return to 5TART.

Next, during continuous shooting at a high speed reduction ratio, charging of the shutter, mirror, and automatic diaphragm is completed early, winding is not yet completed, and after the first tension magnet MGO for the next shooting operation is energized in step 9, Consider what happens when the film ends.

In this case, the mechanical release operation is activated by the first tensioning magnet MGO, so the aperture is narrowed down and the mirror is raised, but the film stops midway through winding and is not wound any further. film switch s
w F L M 3 remains off. therefore,
If the film is rewound in this state, the photographer may misunderstand that the shutter is open and may make a mistake. Furthermore, if strong light rays enter through the lens, there is a risk of fogging the film. Therefore, it is best to lower the mirror and then rewind the film.

After checking the mirror up in step 10, step 1
1. While waiting for the film stop certification at the completion of winding at 12,
When the end of the film is detected by time interwoven processing,
In order to set the flag F0=1 in step 132, the process branches to step 52 in step 11.

[Step 52] Set PDO=l and PDl=0, and rotate the charge motor Ml in a direction in which the reduction ratio of the charge transmission system Kl becomes low. The rotation direction of the charge motor Ml may be switched according to the set mode.The program jumps to step 30, confirms the completion of charging, and proceeds to steps 31, 32, and 39, and performs rewind control. to go into.

"Mode processing 1 At step l in Fig. 12, the first stroke switch swl is
When it is determined that the switch is off, the mode processing shown in FIG. 14 is performed.

[Step 150] Set PE3 to 0. This turns off the transistor TRI (FIG. 8) and turns off the power supply voltage Vcc. Photometry is stopped and power is saved. Note that the power supply voltage V.

is alive.

[Step 1511 Determine the PF5 manual power from the self-drive changeover switch 5wM0DE. If it is the drive mode, the process goes to step 152, and if it is the self-timer mode, the process goes to step 163.

[Step 152] Determine whether the 4th bit of register RL is 1. At the time of l, since the self-timer mode had been in effect until then, the process advances to step 153 and the
Since it was the drive mode at the time, the process advances to step 155.

[Step 153] When this step is reached, it means that the photographer has switched the self-drive changeover switch 5wM0DE from the self-timer mode to the drive mode. Therefore, the contents of the register RL are set to 0 to set the first drive mode, that is, the single-shot high-speed mode.

[Step 154] Output the contents of register RL)
It is output from PLONPL3 and displayed on the display device LCD. Then, return to 5TART.

[Step 155] Determine the PF6 manual power from the selection switch 5w5TEP. When PF6=1, the self-drive selector switch 5wM0DE is also the selection switch 5w5.
TEP also means there is no change, so return to 5TART. When PF6=O, the selection switch 5w5TEP is pressed, so the process advances to step 156.

[Step 156] The third bit of register RL is 1,
That is, it is determined whether or not automatic gear shifting is being performed.

If the automatic transmission is in effect, the process proceeds to step 157; if not, the process proceeds to step 158.

[Step 157] Performs an AND operation on the contents of register RL and 1, and stores the result in register RL again. This means that the 2nd, 3rd, and 4th bits are 0.
This is equivalent to canceling automatic gear shifting.

Therefore, the photographer only needs to press the selection switch swSTEP once to manually cancel the automatic gear shift.

[Step 158] If the automatic gear shift is not set, the contents of the register RL are incremented by 1 and stored again.

[Step 159] Determine whether the content of register RL is 3. Since RL=3 is not assigned to any mode, becoming 3 means that one cycle of drive modes has been completed. If it is 3, the process proceeds to step 160; if it is not 3, the process proceeds to step 161.

[Step 160] Set the contents of register RL to 0.

Steps 158, 159, and 160 are single-shot high-speed mode →
Continuous shooting high speed mode → continuous shooting low speed mode, select switch 5w
This means switching every time 5 TEP is pressed.

[Step 1611 Output the contents of register RL]
) Output from PLO-PL3 and display on the display LCD.

[Step 162] Wait until the selection switch 5w5TEP is released from the press and return to 5TART.

[Step 163] Self-drive selector switch 5
Even when wM0DE is off, it is determined whether the 4th bit of register RL is 1 or not.

If it is 1, the process goes to step 165 because the self-timer mode has been in effect until then, and if it is 0, the process goes to step 164 since it is the drive mode.

[Step 164] When this step is reached, it means that the photographer has switched the self-drive changeover switch 5wM0DE from the drive mode to the self-timer mode. Therefore, the contents of the register RL are set in OAH in hexadecimal notation to set the first mode of the self-timer modes, that is, the self-timer 10-second mode. Steps 152, 153, 163, 164 are the features of the present invention.

[Step 165] Determine the PF6 manual power from the selection switch 5w5TEP. When PF6=1, the self-drive selector switch 5wM0DE is also the selection switch 5w5.
TEP also means there is no change, so return to 5TART. When PF6=0, the selection switch 5w5TEP is pressed, so the process advances to step 166.

[Step 166] If the contents of register RL are OAH, proceed to step 167; otherwise, proceed to step 168.
, respectively.

[Step 167] A hexadecimal code OBH representing the self-timer 2-second mode is stored in the register RL.

[Step 168] A hexadecimal code OAH representing the self-timer 10-second mode is stored in the register RL.

Steps 166, 167, and 168 are self-timer 10
This means that the second mode and the self-timer 2-second mode are switched each time the selection switch swsTEP is pressed.

(Effects of the Invention) As explained above, according to the present invention, the first setting operation member that switches between the drive mode and the self-timer mode, and the first setting operation member that switches between the drive mode and the self-timer mode, and When the self-timer mode is switched to the drive mode by the operation of the second setting operation member that sequentially switches the mode, and the first setting operation member is operated, the mode is changed from the drive mode to the self-timer mode. When the timer mode is switched to, a control means is provided that automatically initializes the mode with a predetermined self-timer time that is frequently used, so that the second setting operation member can be set in the drive mode and in the self-timer mode. In addition, when switching between drive mode and self-timer mode, the frequently used mode can be set without operating the second setting operation member, so the operation related to mode switching is easy. It is possible to improve performance, space, and cost.
Moreover, it can be made easy to use.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing an example of the operation of the embodiment of the present invention,
FIG. 3 is a front view showing a camera embodying the embodiment shown in FIG. 7 is a perspective view showing the rewinding transmission system, FIG. 8 is a circuit diagram showing the microcomputer and peripheral circuits, FIG. 9 is a circuit diagram showing the drive circuit, and FIG. 1θ is a decoder and display. 11 is a block diagram showing the mode code,
12-14 are flowcharts. l...Setting means, la...Self-drive selection switch, 1b...Selection switch,
2...Control means, 2a...Register,
3... Display means, 3a to 3e... Display element, 4... Drive circuit, 5... Switching means, 6... High speed Transmission system, 7...Hoisting load, 8...Film, 9...Detection means, 10...Low speed transmission system, M2... Hoisting motor, 2... Hoisting transmission system, 31...
...Self-drive selector switch, 32...
...Selection switch, 33...Display, DRl-
DR3...Drive circuit, COM...Microcomputer, 5wM0DE...Self-
Drive selection switch, 5w5TEP/old/- selection switch, LCD...Display, LDEC...
·decoder.

Claims (1)

[Claims] 1. In a camera having a drive mode consisting of a plurality of modes in which single-frame shooting and continuous shooting are respectively set, and a self-timer mode consisting of a plurality of modes in which different self-timer times are respectively set, the drive mode and the self-timer mode and a second setting operation member that sequentially switches between a plurality of modes within the drive mode or a plurality of modes within the self-timer mode, and by operating the first setting operation member. When the self-timer mode is switched to the drive mode, the mode is automatically changed to a single-frame shooting mode, and when the drive mode is switched to the self-timer mode, the mode is automatically changed to a frequently used predetermined self-timer time mode. A camera characterized in that it is provided with a control means for initial setting.