JPS5921005B2 - photo camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a photographic camera having a program control device for controlling various functional operations of the camera before and during the exposure process and during setting of the camera after exposure.

Equipped with an electronic aperture shutter and an automatic exposure circuit (from German Patent Application No. 2141943)
The known photographic camera has a control device that controls the course of exposure and shutter release according to a predetermined program.

When the control is engaged via the camera's release knob, the mechanical control is activated and the mechanism triggers a predetermined action at each step. That is, in the first step, an exposure control circuit is activated and this circuit determines the required aperture aperture value using an EE measurement method.

The stop is then adjusted according to the determined diaphragm opening value, so that the shutter blades are only opened up to this diaphragm value, and when this position is reached, the shutter blades are opened by means of a holding element triggered by an electric signal. Retained. In the next step, the control device switches on the shutter blade drive mechanism, so that the shutter blades open to the preset aperture value.

At the same time, the control device switches the operation of the exposure control circuit from an operation for setting an aperture value to an operation for determining an exposure time.
Next, the drive mechanism for closing the shutter blade is activated, and the drive mechanism starts the shutter blade closing operation in response to a signal from the exposure control circuit. After film exposure, the controller is reset and the shutter is set to the ready position.

This also returns the control device to the first program step. This type of mechanical control has the disadvantage of operating with undesirable start-up time offsets and lag times due to its moment of inertia, requires a large amount of space, and suffers from wear and tear when taking a large number of photographs. It also has the disadvantage of being easily damaged. Furthermore, with this type of mechanical control device, the photographing process is performed based on the same program each time the release key is operated, and the control program cannot be changed unless the entire control device is replaced with a separate control device. Can not. Therefore, it is an object of the present invention to provide a program in which all processes necessary for photographing, starting with the activation of each camera element involved in photographing, are electronically combined and can be easily replaced. Therefore, it is logically controlled, the contents of the program can be changed by presets, and in the electronic connection,
Individual actions can be arbitrarily omitted, stopped, skipped (zi-up),
The objective is to provide a photographic camera that can be used repeatedly.

The photographic camera of the present invention solves the above-mentioned problems. Not only can the operative connection between the camera elements involved in photographing be achieved by an electronic coupling device instead of the conventional complex gear transmission coupling device. This electronic coupling device is easier to manufacture than a gear transmission coupling, and can be constructed using existing elements. Furthermore, this electronic coupling device makes it possible to easily and inexpensively modify and change the working coupling between each camera element, thereby eliminating the need to change the exposure program after use (especially on the part of the camera manufacturer). Even if this occurs, the (current) exposure program once selected can be easily and economically changed. In other words, if the operating process of the camera is controlled not by mechanical force transmission through connections between mechanical operating members, but by information transmission through electronic circuits (logical connections),
It is clear that this allows the elapsed time of camera operation to be shortened.

This advantage can be achieved by the configuration of the electronic circuit (logical combination) according to the invention. Furthermore, it is an object of the invention to provide a highly automatic system in which the control and adjustment functions necessary for the exposure or measurement process occur uniformly without delay and wear and with a very small number of operating steps. Our goal is to provide a photo camera with the highest quality.

The above object is achieved according to the present invention by a photographic camera constructed as follows.

That is to say, there is provided a pedestal programming assembly with a step switch and a control and programming unit, the input of said control and programming unit being supplied with the various actual values of the camera components involved in photographing; Furthermore, the control/program unit is on the manual side of the step switch.
The control and programming unit is connected to the two control pulse generators for switching on or off the control pulse generator via control lines. , the control pulse generator being connected to another input of the step switch and actuating the step switch in dependence on the control pulses of the control program unit to shift in step steps. , and the stepping switch has a plurality of output sides, and the output side includes a film feed motor,
Mirror control device, shutter open. A camera member involved in photographing, such as a closing device and an automatic aperture adjustment device, is connected, and the camera member is operated depending on the step of the step switch, and furthermore, the camera member is operated depending on the step of the step switch. One of the outputs is connected via a first feedback line to an exposure time shaping oscillator, which allows the desired exposure time to be set by means of an exposure time setting device; Another output is connected via a second feedback line to one of the control pulse generators, and at least one of the outputs of the stepper switch is connected to one of the control pulse generators via a second feedback line.
One output is connected to another input of the control and programming unit via a connecting line configured as a third feedback line for program control as a function of the various actual values of the camera components involved in photographing. The one control pulse generator is operated when the shutter is opened. upon opening of the shutter actuated by the closing device, the stepwise switch is controlled at the beginning of the voltage-dependent start-up time by a stepwise switch and after a time dependent on the respective battery voltage loss; activating an exposure time shaping oscillator via said first feedback line, the exposure time shaping oscillator being connected to said further input of said step switch; Photographic camera in which the other of said control pulse generators is stopped during operation of the time-forming oscillator.

Furthermore, according to the present invention, the above object can also be achieved by a photographic camera having the following configuration.

In other words, a control program assembly is provided having a step switch and a control and programming unit, the input of said control and programming unit being supplied with the various actual values of the camera components involved in photographing, and furthermore the control and programming unit. - The program unit is connected to the input side of the step switch for jumping or jumping up the step step or for setting the step switch, and the control/program unit also controls the operation of the control pulse generator via the control line. It is connected to two control pulse generators for connection or disconnection, said control pulse generators being connected to another input of the stepping switch and stepping in dependence on the control pulses of the control program unit. The switch is actuated to shift in stepwise steps, and the stepwise switch has a plurality of outputs, which are used for photographing the film advance motor, mirror control device, shutter opening/closing device, etc. A camera member is connected thereto, the camera member being actuated in dependence on the step of the step switch, and one of the plurality of outputs of the step switch being connected to the film speed setting device and the aperture. the stepper switch is connected via a first feedback line to an automatic exposure time adjustment device controlled by a value setting device; It is connected via a line to one of the control pulse generators, and at least one other of the outputs of the step switch is dependent on the various actual values of the camera components involved in taking the picture. For program control, the shutter opening/closing device is connected to another input side of the control and programming unit via a connecting line configured as a third Q retention line, and the shutter opening/closing device is connected to the control pulse generator of the one said. Upon opening of the shutter actuated by
activating an automatic exposure time adjustment device via the first feedback line in a controlled manner after a time depending on the respective battery voltage loss;
Further, an automatic exposure time adjustment device is connected to said other input side of the step switch, and said control pulse generator is connected during operation of said one of said control pulse generators and said automatic exposure time adjustment device. The other of the photo cameras is stopped. In a photographic camera having the above configuration, an electronic coupling device is used instead of a gear transmission coupling member4, so that the elapsed operating time in the camera is shortened, and for example in a reflex camera, compared to the original exposure time. short measurement and operating times are possible. It should be noted that the multiple use of step switches in conjunction with control pulse generators allows the transmission of individual amplifier signals to the various camera elements and feedback signals to the control and programming unit with virtually no delay.

According to an embodiment of the invention, a plurality of inputs are provided for the step switch, via which the step switch can be set to any desired stage directly by the control and programming unit. It is.

As a result, in the case of continuous shooting, that is, automatic shooting repetition, it is possible to omit the step for exposure measurement in the advance switch and to start from the step for starting the original exposure program. This results in an increased film feed time, i.e. a relatively fast film feeder (which is achieved with relatively little energy). Upon a new activation of the diaphragm adjuster, the step switch is immediately set into the starting position via one input using the control and programming unit.

In short, there is no need for a new activation of the measuring key in addition to the newly adjusted time or diaphragm when checking whether a film exposure can be carried out. When adjusting the shooting data settings to suit the existing brightness of the subject, simply rotate the time adjuster for an automatic aperture adjustment device or the aperture adjuster for an automatic time adjustment device to the next point while keeping the measurement key pressed. That is, the camera is rotated until the pointing member of the camera signals the camera adjustment value corresponding to the exposure for the film being used. In short, when obtaining camera adjustment values, there is no need to press a new measurement key when changing the time or aperture adjuster. According to a further embodiment of the invention, the continuous frame advance circuit operates during the actuation of the release and, after detecting the inactivity of the advance device, by means of the stepwise switch control and programming unit, the continuous frame advance circuit operates during the actuation of the release and, after detection of the inactivity of the advance device, by means of a stepwise switch control and programming unit. It is set via one input to the starting condition or, under the activated measuring key, via the other input to step 64'' for the immediate start of the exposure program. It is achieved that in the inactive state of the hold key, a measurement is taken by an automatic exposure setting device before each exposure process.In the active state of the measuring key, the frame-by-frame movement can be carried out even faster, which means that the exposure This is because the advance step of the advance switch determined for the adjustment device is increased.This embodiment allows the camera to meet the needs of the photographer.In the first embodiment of the present invention, the advance step of the advance switch is increased. An exposure measuring device with an automatic aperture adjustment device is provided as a switch, time, and film sensitivity adjuster.

That is, depending on the manually adjusted exposure time, the above-mentioned device is used to adjust the appropriate aperture for the exposure process. In the second embodiment of the present invention, an exposure measuring device having an automatic time adjusting device is provided in addition to the step switch, the aperture which is a data input member, and the film sensitivity adjusting device. In the case of a manually adjusted diaphragm, the exposure time is optimized depending on the film sensitivity and the incident light when controlled by a progressive switch. According to another embodiment of the invention, a step switch controls an amplifier for various camera functions and, via a return path, a control and programming unit.

This type of feedback makes optimum use of the process control device and thus the camera. In order to save energy and eliminate unnecessary operating elements in the camera, a further embodiment of the invention provides that a release key or a measuring key is operatively connected to the energy supply so that the control and programming unit can control the progress of the respective program phase. Afterwards, the energy supply source should be shut off. This prevents battery drain due to the camera operator forgetting to shut off the energy supply when the camera is not in use. A vulgar switch on the camera for the activation connection of the energy supply is no longer required. According to a further embodiment of the invention, a second control pulse generator is provided, which generator is controlled by a step switch during the voltage-dependent start-up period for opening the shutter as follows. , that is, the step switch is controlled to be shifted for exposure time interposition in accordance with the respective battery voltage loss. This second control pulse generator is used to make it insensitive to the pulses of the first control pulse generator. Elimination of such effects is necessary because the state of charge of the battery changes continuously as the number of film feeds increases. In short, the starting time for opening the electromechanical shutter increases in the case of a decrease in the state of charge of the battery. The different starting times for opening the electromechanical shutter are compensated by the second control pulse generator in the following way, i.e. only when the electromechanical shutter actually opens is the exposure time changed by the time shaping generator. This is done in such a way that it is interrogated.

In short, this circuit arrangement effectively compensates for the influence of the battery state of charge on the opening speed of the electromechanical shutter. Further, according to another embodiment of the invention, a circuit device is provided which can control the coil independently of the step switch in order to open the shutter only during a predetermined period of time during which the coil is not overloaded, in which case the starting time for opening the shutter is If the exposure time is shorter than this predetermined time, the control is interrupted. This circuit arrangement prevents burnout of the coil to the electromechanical shirtter and, moreover, if the starting time for opening the shirtter, together with the exposure time, is shorter than the time without overloading the coil, this circuit arrangement (monoflop) By controlling and interrupting the shutter, a short circuit is prevented in the following way: the line for closing the shutter is controlled simultaneously with the line for opening the shutter. Next, the present invention will be explained in detail using the illustrated embodiments.

FIG. 1 shows the control and adjustment circuitry of a central electronic process control unit 29A for a photographic camera having an exposure measuring device with an automatic aperture adjustment device.

The main part of this circuit is the step switch, which is controlled by the control and programming unit via the control pulse generator a. This stepper switch is binary operated and is shifted in steps by pulses supplied to the clock input via control line 18, and is equipped with an automatic aperture adjustment device for the controlled movement of the camera components during the exposure process. controlling the aperture measuring device and stepwise switch output line 31,
25 to control camera functions. That is, the individual amplifiers are controlled via a control line 5 for controlling the film feed motor, a control line 13 for controlling the mirror magnet, a control line 22 for opening the shutter, and a control line 14 for closing the shutter.
Control the control/program unit via the In order to compensate for the loss of battery voltage during start-up when the shutter is opened, the stepping switch is connected via a further feedback path 21 to a second control pulse generator b, which is connected via a control pulse line 15. It is connected to the control pulse line 18 of the generator a described above. The control pulse generator b is connected to the battery voltage loss compensation line 3.
6 to the camera's energy supply source or power supply. The control pulse generator a is, for example, 10ms
Shift step switch I every time. control pulse generator b
Step switch I is shifted in place of control pulse generator a to compensate for variations in start-up time of the shutter release device due to loss of battery voltage, and also to interrogate exposure time. Exposure time forming transmitter c operates at the start of exposure and shifts step switch I by one step via control lines 8, 18 in accordance with the set exposure time. The automatic aperture adjustment device is controlled by a film speed setting device and an exposure time setting device, the exposure time setting device additionally controlling the exposure time formation transmitter c via a time setting line 34.

Furthermore, the actual value of the exposure time setting device is the actual value
匍 through 7? - Supplied to the program unit. Depending on how the time is set (set time), the actual value is encoded as a digital signal, for example in a serial code, and fed to the training and programming unit. Other actual value input lines have been omitted for clarity. Their actual value is generally a digital signal, which is simply a ``YES or NO'' decision, eg [Is the mirror in the down position? ” “
Is the release locked? This is a digital signal that enables judgments such as ``Is the automatic diaphragm adjustment device turned on and connected?''. How such actual values are formed is a technical matter that is known or can be easily conceived by those skilled in the art. To form an actual value indicating, for example, "Is the mirror in the lower position?", for example a limit switch is provided, which is activated when the mirror is controlled in the lower position and changes the potential on the corresponding actual value input line. Try to change it. This changed potential provides information regarding the actual value. This also applies to the other components of the camera, in which case the function or operating state of these components is likewise supplied as input value signals to the control and programming unit; It is also a technical means that is publicly known or can be easily conceived by those in the industry. For clarity, all other functional elements are simply indicated by input arrows and numbers. That is, the continuous frame feed or continuous shooting circuit is 1, the automatic aperture device is 2, the auxiliary shutter is 3, the lower mirror position detection is 4 (this will be explained in detail in connection with the 5th step later), and incorrect exposure. The release locking device for preventing photographing is indicated at 16, the measuring key at 26, the release at 27, the film advance motor actuating operation at 28, the input line 32 and the individual actual values for the camera elements being omitted.

FIG. 2 shows a block connection diagram of an electronic process control device for a photographic camera similar to that shown in FIG.

Instead of an exposure measuring device with an automatic aperture adjustment device, an exposure measuring device with an automatic time adjustment device is used. In this configuration, the exposure time forming transmitter c can be omitted. This is because the self-time adjustment device works in its place. The automatic time adjustment device V is controlled by a film speed setting device and an aperture value setting device. The actual value of the aperture setting device is supplied to the control program unit via the actual value input line 17. The exposure measuring device with automatic time adjustment device V is connected via return paths 7, 9, 20, 23 to the output line 31 of the step switch.

The actual operation of the diaphragm takes place in the simulated diaphragm state via the time-forming output line 8, the step switch, the step switch output lines 31, 25, the amplifier and the lines 10, 11 after the measurement of the diaphragm opening. . In short, the aperture is the first
Rather than being directly controlled via an exposure measuring device and an amplifier as shown, this is done using a step switch I.
In FIGS. 3 and 4, a control and programming assembly consisting of logic circuitry for an electronically controlled photographic camera is shown at 30.

The control/program assembly consisting of this logic circuit has a circuit block I (step switch) and a control/program unit (control/program unit), and this circuit block is shown in FIGS. 1 and 2.
This is a component provided within the enclosure indicated by the broken line in the figure. Progressive switch I essentially consists of counters A, B, C, D and a decoder with 16 shift steps. The forward switch is binary operated and is connected by its output line 31 via a return path 24 to the control and programming unit;
It is connected via a feedback line 20 to a time shaping generator c or an automatic time adjustment device, via a feedback line 21 to a control pulse generator b, and via an amplifier input line 25 to the individual amplifiers for the camera elements. has been done. Each time step switch I shifts, a signal is generated at the next output of the decoder. The four counters A-D have clear or reset inputs.

Counters A-D are cleared or reset via the clear or reset inputs. If signals are applied to all reset inputs, step switch I is reset to its initial state. In the initial state, a signal force of logic value 0 is generated from the 0th output side. control. The program unit has different logical combination elements.
These elements are connected to the actual value input line 3.
2 processes the incoming signals according to the selected exposure program and outputs them to the output lines 6, 12, 1 of the control and programming unit.
9. A monostable multivibrator 35 is provided in the control and programming unit, which in particular controls the shirt opening device via the control line 22. A monostable multivibrator is a digital circuit with two possible output states, of which only one
Only one is in stable condition. When this monostable multipipulator 35 is externally controlled into an unstable state, it returns to a stable state after a predetermined adjustable time. The monostable multivibrator 35 can be reset even before this predetermined adjustable time has elapsed via the second input (in this case a shift step next to or after the step switch). From step 6 to steps 7 and 8. As will be clear from the following description of the operation of each logic circuit element during the shift to , due to the action of the monostable multivibrator 35, the excitation does not completely depend on the position of the step switch to open the shutter. The operation of the process control device 29 for an electronically controlled photographic camera having an automatic aperture adjustment device will be explained using the first block diagram and FIGS. A control program assembly (FIGS. 3 and 4) consisting of a logic circuit for an electronically controlled still camera will be explained along with the operation of the camera.

FIGS. 3 and 4 show the logic circuits in the portions surrounded by chain lines in FIGS. 1 and 2. FIG. When the film sensitivity is set by the film sensitivity setting device and the exposure time is set by the exposure time setting device, the film sensitivity and set time are input into the phase-moveable aperture adjustment device, and the exposure time is sent to the exposure time formation transmitter c. is input. Release 2
7, the energy supply or power supply is switched on and the control program unit and all drives for the individual camera components are energized. A connection pulse is then sent out via the capacitor 51, and a logic 1 signal is supplied to the input of the NOR element 130, which is connected to the power line 12. NOR element 13
Regardless of the logic value of the other input side of 0, the NOR element 13
The logic value of a zero output is O. The NOR element 130 has A
ND elements 131 and 132 are connected. NOR element 13
Since the logical value of the output of 0 is o, the AND element 131,
One input of 132 is supplied with a logic zero signal. The logical value of the output of AND elements 131 and 132 is O regardless of the logical value of the other input side. Therefore, counter A~
A signal with a logic value of 0 is applied to the clear input side (reset input side) of D. As a result, step switch I is reset to its initial state. In the initial state, the logic value of the 0th output side of step switch I is 0. On the other hand, the logical values of the remaining output sides (first output side to fifteenth output side) of step switch I are 1. A positive signal compared to the reference potential is sent to the control line 10 via the NOT element 133. As a result, the diaphragm drive is activated. The diaphragm is therefore closed by the diaphragm drive. The aperture completely blocks out light from the subject. When the camera's energy supply source or power supply device is turned on and connected, the control pulse generator a is turned on.

Control pulse generator a! ζ For example, a pulse is generated approximately every 10 ms. As a result, a pulse of reference potential (zero potential) is generated on the control line 18 for a short time. This pulse is NOT element 13
4 is converted into a positive pulse and supplied to the clock input side of step switch I. This clock pulse causes step switch I to shift to the first output. The logic value at the first output of step switch I is now O. On the other hand, the logic value of the remaining output of the increment switch is I. As a result N
A positive potential appears on the control line 9 (the control line 9 is a line for forming the interference light level) via the OT element 135. As a result, the automatic iris adjustment device is activated, and the interference light level, which first measures the interference light coming through the viewfinder under the closed iris condition (with the iris closed), is memorized and used for subsequent light measurements. Used as a reference potential. 1 more
After 0 ms, step switch I is shifted to the second output (second step) by control pulse generator a. In the second step, the logic value at the second output of step switch I is zero. The output of step switch I is converted into a positive potential signal by NOT element 136 and sent out via control line 7. As a result, the automatic aperture adjustment device works. The 10 ms time during which the control line 7 is excited is a time for temporary adjustment. This 10m8 time may be too short to perform automatic aperture adjustment. Therefore, when the stepping switch I is shifted to the third output side, the control line 23 is excited via the NOT element 137, and an additional adjustment in the automatic aperture adjustment is performed. As a result, the adjustment of the aperture can continue. Regarding the difference between the above-mentioned "temporary adjustment" and "additional adjustment", the predetermined 10ms period may not be sufficient for aperture adjustment in some cases, so the following 10ms period (
(3rd step), the former and latter are simply referred to as such, respectively.

After a further 10 m8 has elapsed, step switch I shifts to the fourth output side.

Here, if the release switch 27 had been operated from the beginning, the logical value of the fourth output side of the step switch I would be O in the fourth step due to the original exposure process as described later, and the remaining The logic value on the output side is 1. Therefore, the logic value of one input of the NAND element 138 connected to the fourth output of step switch I is O. Also, step switch I
A signal with a logic value of 1 is applied to the other input side of the NAND element 138 connected to the eighth output side of the NAND element 138 . The logic value on the output side of NAND element 138 is 1. Via the shutter closing control line 14, therefore, a positive pulse is supplied to the shutter closing device, whereby the shutter closing device is operated and the shutter is closed by the shutter closing device. The step switch I is normally stepped by the clock pulses of the control pulse generator a.

That is, the shifts from the 0th step to the 1st step, from the 1st step to the 2nd step, from the 13th step to the 14th step, and from the 14th step to the 15th step, respectively. This is done by the clock pulse of a. However, the shift from the 6th step to the 7th step is performed by a control pulse from the control pulse generator b, and the shift from the 7th step to the 8th step is performed by a control pulse from the exposure time formation transmitter c. It is carried out with In other words, the shift from the third step to the fourth step is also effected by the clock pulses of the control pulse generator a. The illustrated embodiment is based on a camera having an aperture and a main shutter in the lens.

There is a camera mirror behind the half-mirror, which allows you to watch the image of the viewfinder, so the mirror is positioned 6" downwards. Behind the half-mirror is an exposure meter. The detection elements of the optimum sensitivity of the device are provided. Exposure measurements are therefore made when the mirror is in the "downward 1" position. Therefore, it is essential for the main shutter to be open for exposure measurement. To prevent the film behind the mirror from being exposed, an auxiliary shutter is provided between the mirror and the film. This auxiliary shutter is opened just before the actual shooting, but is not related to the shutter time adjustment. In other words, step 60' ~ "3"
Exposure measurements at ° must be made when the main shutter is open, the auxiliary shutter is closed, and the mirror is in the "downward" position. To perform exposure, the shirt cover must be closed. This is because the main shutter must be open for exposure only for a predetermined exposure time (c). After the shutter is closed, the mirror is swiveled to a higher position, and the auxiliary shutter is opened along with the mirror. This allows the camera to expose. The main shutter in the lens is then opened for a predetermined exposure time, thereby exposing the film. After that, the auxiliary shirt and mirror are again 1 downward.
As soon as it is returned to the position, the main shutter opens to allow the next exposure measurement. Therefore, in the third step the main shutter is open.

Once the shutter is closed in the fourth step, the mirror and auxiliary shutter can be moved to an ``up'' position, ie, a position that allows exposure of the film. After a further 10 ms, step switch I is shifted to the fifth output by control pulse generator a.

In the fifth step, the logic value at the fifth output of step switch I is O. In this case, the mirror of the reflex camera is in the viewfinder position (lower mirror position). 6. The lower mirror position is the position where the mirror is rotated and placed in the optical path, and since the mirror has an inclination of 45 degrees, it is possible to observe the image incident through the lens and measure exposure. become.

During film exposure, the mirror is swung high out of the optical path so that light is incident on the film. Therefore, the mirror position detection switch 36 is open. The auxiliary shutter is also located at a position that covers the aperture. Therefore, the auxiliary shirt shutter position detection switch 29 is closed. The detection switch 36 is connected via the actual value input line 4 to the control and programming unit. The detection switch 29 is connected via the actual value input line 3 to the control and programming unit. Therefore, via the actual value input line 4, the NOT element 1
A signal with a logic value of 1 is supplied to the input side of 40. On the other hand, a signal with logic value 0 is sent out via actual value input line 3. N
Since it is negated by the OT element 140, the NOR element 13
The logical value of both inputs of 9 is O. Therefore, NOR element 1
The logic value on the output side of 39 is 1. As a result, the mirror magnet actuating device is excited via the control line 13, the mirror is released and, under the action of the spring under tension, flaps up into the photographing position. At this time, the auxiliary shirt shutter is also pivoted into the photographing position by the action of another drive spring. As soon as the mirror leaves the lower position, the detection switch 36 closes. On the other hand, as soon as the auxiliary shirt shirt reaches its upper position, the detection switch 29 opens. When the detection switch 36 is closed,
The potential of the actual value input line 4 is equal to the reference potential. Therefore NO
At the output of T-element 140, a signal with a logic value of 1 is generated. N
At the output of the OR element 139, a signal with a logic value of 0 is generated.
As a result, the mirror magnet actuating device is no longer excited via the control line 13. If a signal of logic value O is present at the fifth output of step switch I and detection switch 29 is closed, a signal of logic value 0 is applied to both inputs of OR element 141. Therefore, the logic value on the output side of 0R element 141 is O. As a result, logical values 0 and 1 are added to the input side of the AND gate 142. This is because the logic value 1 appears at the seventh output. Therefore, AND element 1
The logic value of the output of 42 is also O. If the logic value of the fifth output side of the step switch is O, the logic value of the ninth output side is 1.
Therefore, NOR element 1 connected to the ninth output side
The logic value on the input side of 44 is 1. Therefore, NOR element 1
The logic value of the output of 44 is O. Also, the NOR element 145
Since the logical value of both input sides of is O, the NOR element 145
The logical value of the output is 1. The reason why the logic value of the input side of the NOR element 145 that is not connected to the NOR element 144 is 0 is as follows; namely, one input side of the NOR element 146 is connected to the twelfth output side of the step switch I. One input side of the NOR element 147 is connected to the fourteenth output side of the step switch I. Step switch I 12th
and the logical value of the fourteenth output side is 1, so NOR
The logic value of the outputs of elements 146 and 147 is zero. Therefore, the logic value of the output of 0R element 148 is O. One input side of the AND element 157 is connected to the fourteenth output side of the step switch I, and the other input side is connected to the fifteenth output side. Therefore, the logic value of both input sides of AND element 157 is 1
It is. Therefore, the logical value of the output of AND element 157 is 1. Further, the logical value of the output of the NOR element 158 is O. Therefore, the logical value of the output of 0R element 149 is O. 0
This is because the logical values of both inputs of R element 149 are O.

As is clear from the above explanation, the logic value on the input side of the NOR element 145 that is not connected to the NOR element 144 is O.
Therefore, the logical value of the output of NOR element 145 is 1. Further, the logical value of one input side of the NAND element 143 connected to the NOR element 145 is also 1. Since the logic value of the other input side of the NAND element 143 is O, NA
The logical value of the output of the ND element 143 is 1. A signal of positive potential is therefore applied to the control pulse generator a via the control line 19, and the control pulse generator a is switched off. When the auxiliary shutter reaches the upper position (ie, the so-called photographing position), the switch 29 is opened.

As a result, the logic value at the input of the 0R element 141 excited via the actual value input line 3 changes to 1. Therefore, the logical value of the output of 0R element 141 also changes to 1. AND element 1
Since the logical value of both inputs of 42 is 1, the AND element 14
The logical value of the output of 2 is also 1. Therefore, the NAND element 14
The logic value of both inputs of 3 is 1. The logical value of the output of the NAND element 143 is O. Therefore, the cut-off of the control pulse generator a is released, and the control pulse generator Allζ subsequently sends out a control pulse to the clock input side of the step switch l again after 10 rrLs. As a result, step switch I is shifted to the sixth output side. In the sixth step, the logic value at the sixth output of step switch I is O. Therefore, N
At the output of the OT element 150, a signal with a logic value of 1 is generated.
This signal sends the control pulse generator b via the control line 21.
is injected. The control pulse generator b compensates for the start-up time of the shutter opening device due to losses in battery voltage. However, the time it takes for control pulse generator b to shift the step switch may be shorter than 10 ms to a relatively large or relatively small extent depending on the loss of battery voltage (i.e., This is to compensate for the different start-up times of the shutter release device, in other words, depending on the battery voltage loss, the step switch l is shifted to the seventh output after more or less time intervals of less than 10 ms have elapsed. When step switch I shifts to the seventh output, control pulse generator b is switched off and no longer generates control pulses.
If a logic zero signal is present at the sixth output of the step switch, this signal is sent via the monostable multivibrator 35 to the control line 22. As a result, the shutter is controlled to open by the shutter release device, and the shutter is opened. That is, a signal with a logic value of 0 is applied to the input side of the NAND element 151 of the monostable multivibrator 35 connected to the sixth output side of the stepwise switch I, and therefore a logic value is applied to the output side of the NAND element 151. A signal of 1 is generated. NAND
The output lζ of logic value 1 of element 151 is applied to one input side of NAND element 153 via capacitor 152.
The logic value of the other human power side of the NAND element 153 is 1. Therefore, the logical value of the output of NAND element 153 is 0. Further, the logic value of one input of the NAND element 154 is O, and the logic value of the other input is 1. NAND element 154
A signal with logic value 1 is produced at the output of . This signal causes the shirt shutter to be opened via the control line 22. The monostable multivibrator 35 is configured such that the logic value at the input side of the NAND element 153 connected to the capacitor 152 becomes 0 approximately 10 ms after the start of excitation for opening the shutter. When the logic value on the input side of the NAND element 153 becomes O, the monostable multivibrator 35 is reset. When the monostable multivibrator 35 is set, the logical value of the output of the NAND element 153 is 1.

Therefore, the logical value of the output of NAND element 154 is O.

The excitation of the shutter 1 drive via the control line 22 is therefore stopped. On the other hand, if the exposure time is shorter than 10ms,
It is reset when the logic value at the eighth output of the monostable multivibrator advance switch I becomes zero. This is because if the logic value of the eighth output is 0, the logic value of the NAND element 153 connected to the eighth output of step switch I is O. The multivibrator 3 is configured to energize the windings of the drive device only for a predetermined period of time (i.e., 10 ms) that does not overload the windings of the shatter drive device.
The time that 5 should remain in the metastable state is set to approximately 10 ms. Furthermore, due to the action of the monostable multivibrator 35, the excitation for opening the shutter does not completely depend on the position of the step switch I (i.e. even if the step switch I is shifted to the corresponding output side, the shutter does not open). The excitation for opening continues as is.Therefore, there is no fear that the shutter will rebound after reaching the opening position.For example, step switch I is shifted to the sixth output side, the shutter is excited for opening, and the shutter is activated. reaches the open position, step switch I switches to the seventh position.
is shifted to the output side. In this case, if the excitation for opening the shutter is stopped at the seventh step, the shutter, which opens at high speed, will surely try to return to the closed position by chattering and then try to open again. To prevent this, the advance switch must be fixed for a relatively long period of time in a position that provides the excitation for opening the shutter. Therefore, the interlocation of the set exposure time is delayed. However, if the monostable multivibrator 35 is provided as described above, this type of drawback can be overcome. The shutter is magnetically controlled to open and close.
For this purpose, it is necessary to generate a magnetic field in the coil, so
The opening time of the shutter or the start-up time of the shutter opening device depends on the battery voltage and its losses. The second pulse voltage generator b compensates for this dependence or influence. That is, the second pulse generator generates a pulse that shifts step switch I from the sixth step to the seventh step after a time interval that depends on the operating voltage. Second
While the pulse generator b is in operation, the pulse generator a is stopped via the control line 19. Pulse generator a itself generates one pulse every 10 ms. The pulse generation time interval from the second pulse generator b is selected such that the opening start time (starting time) of the shutter is just compensated. Only when the pulse generator b shifts the step switch to the seventh step does the opening operation of the shutter actually take place. Only then does the original exposure time begin to elapse. This exposure time is determined by the exposure time forming pulse oscillator c.
controlled by. In this pulse generator c, the exposure time is electronically generated on the basis of the exposure measurement (steps 80" to 3"). Until the end of the activation of the exposure time generator c, the pulse generator a is stopped. After the exposure time has elapsed, the exposure time forming oscillator c switches the step switch I from stage 87'' to stage 8''. This closes the shutter.
9 generates control pulses with a pulse interval of 10 ms when not interrupted by a special signal, but pulse generators b and c only generate one pulse and at one point in time: do.

That is to say, it occurs at one point in time, which in the case of the second pulse generator b is determined by the battery voltage and in the case of the exposure time-forming oscillator c by the exposure time. That is, step switch I is shifted to the "exposure time interlocation" position instead of control pulse generator a. Therefore, exposure time is not interrogated unless the shutter begins to open. Control pulse generator b is activated via control line 21. As mentioned above, clock pulse generator a typically generates one clock pulse every 10 ms when not stopped by a signal on control line 19.

The control pulse generators B, c each generate only one pulse, and the pulse interval of the pulses emitted from them B, c with respect to the last clock pulse from generator a is determined by the predetermined conditions or circumstances (generator In the case of b, what is the battery voltage status? In the case of generator c, what kind of exposure time is set?)
determined by. When generators B and c operate, clock pulse generator a is cut off. In this case, the step switch I is not, as usual, stepped by the clock pulse generator a, but in each case by the generators b and c. This causes a control corresponding to the next program stage to take place at the output of the step switch. The switching off of the clock pulse generator a and the activation of the corresponding further generators b to C are carried out by the control and programming section or the same logic circuit (shown in more detail in FIGS. 3 and 4). It also controls the camera elements of this logic circuit G1, such as the continuous shooting (frame advance) circuit and the release lock device. As already mentioned, the control pulse generator b shifts the backward step switch I at a time interval dependent on the battery voltage to the seventh output.

In the seventh step, the logic value at the seventh output of step switch I is O. In this case, 0R element 141, AND element 142, NOR element 144, NOR element 145, and NAN
The logical value of the human output signal of the D element 143 is as follows. Since the logic value of the fifth output side of step switch I is 1, the logic value of both inputs of 0R element 141 is 1. 0R
Since the logical value of the output of element 141 is 1 and the logical value of the seventh output side of step switch l is O, the logical value of one input of AND element 142 is 1, and the logical value of the other input is O
It is.

Therefore, the logical value of the output of AND element 142 is O. As already explained about the fifth step, NOR element 1
The logic value of the output of 45 is 1. Therefore, NAND element 1
430 The logical value of one input is 0 and the logical value of the other input is 1. At the output of the NAND element 143, a signal with a logic value of 1 is produced, which signal is fed via the control edge 19 to the control pulse generator a, so that the control pulse generation a is switched off. On the other hand, at the output of NOT element 154, a signal with a logic value of 1 is generated. This signal is supplied to the exposure time forming transmitter c via the control line 20, and the exposure time forming transmitter C operates.
After the operating time of the exposure time shaping transmitter c, which is determined by the exposure time setting, has elapsed, a positive pulse is emitted from the output 8 of the exposure time shaping transmitter c. This positive pulse produces a reference potential signal on control line 18. A positive pulse therefore appears at the output of NOT element 134 and is applied to the clock input of step switch I. This positive pulse shifts step switch I to the eighth output side. In the eighth step, the logic value of the eighth output side of the step switch is O
It is. Therefore, the logic value of the input of NAND element 138 is 0.
The logical value of the output of the NAND element 138 is 1. N
The output of the AND element 138 is supplied to the shutter closing device via the control line 14, and the shutter is controlled to close by the shutter closing device. The logic value of the input of the NAND element 153 of the monostable multivibrator 35 connected to the eighth output side of the step switch I is O. Therefore, the logical value of the output of NAND element 153 is 1. Exposure time is 10ms
If it is shorter, the monostable multivibrator 35 is in a metastable state, and the signal of logic value 1 on the output side of the NAND element 153 is fed back via the feedback line 155, and the monostable multivibrator 35 is set to a stable state. be done. At this time, the logical value of the output of NAND element 153 is 1. On the other hand N
The output logic value of AND element 154 is 0. Therefore, the control line 22 is no longer excited and the excitation for opening the shutter is stopped. When step switch I is shifted to the eighth output side, the logic value at the input side of AND element 142 connected to the seventh output side of step switch I changes from 0 to 1. As a result, the logical value of the output of AND element 142 is 1. 0R
Since there is no change in the logic values of the input and output of element 141, NOR element 144, and NOR element 145, the logic value of both inputs of NAND element 143 is 1.

Therefore, the logical value of the output of NAND element 143 changes to O. This causes the control pulse generator a to operate again. 1
After 0 ms, the step switch I is shifted to the ninth output by means of a control pulse supplied by the control pulse generator a via the control line 18.

In the ninth step, the logic value at the ninth output of the step switch is O. 0R element 141 and AND element 142
Since the logic values of the input and output of are unchanged, the NOR element 144
The logical value of the output is 1.

This is because detection switch 36 is closed and the logic value at the ninth output of step switch I is O.
NOR element 146, NOR element 147, and 0R element 148
, 149, the AND element 157, and the NOR element 158 have no change in their input and output logic values, and the output of the NOR element 144 has a logic value of 1, so the logic value of both inputs of the NOR element 145 is 1. Therefore, the logical value of the output of NOR element 145 is 0. Therefore, the logic value of one input of NAND element 143 is 0 and the logic value of the other input is 1. Therefore, the logical value of the output of NAND element 143 is 1. As already mentioned, this output is supplied to the control pulse generator a via the control line 19, and the control pulse generator a is shut off. On the other hand, at the output of the NOT element 156, a signal having a logic value of 1 is generated, and this signal is supplied via the control line 5 to the film feed motor.

As a result, the film feed motor is turned on. Film feed motor At the same time as feeding the film, it returns the auxiliary shutter to the position covering the aperture and returns the mirror to the finder position. When the film feed motor rotates slightly, the self-holding circuit is closed. Therefore, the film feed motor is operated by step switch I regardless of the presence or absence of the output signal of NOT element 156 until the film has been fed by one frame and the self-holding circuit is mechanically cut off. As soon as the auxiliary shirt shirt leaves the upper position, the switch 29 is closed. As soon as the other mirror is switched to the viewfinder position, the switch 36 is opened by the mirror. switch 3
6 opens, a logic 1 signal is generated on the control line 4.
As a result, a signal with a logic value of 1 is supplied to one input side of the NOR element 144, so that the logic value of the output of the NOR element 144 is O. Since there is no change in the logic values of NOR element 146, NOR element 147, and 0R elements 148 and 149, N
The logic value of both inputs of OR element 145 is O. Therefore, N
At the output of OR element 145, a signal with a logic value of 1 is generated.
One input side of the 0R element 141 is connected to the fifth step switch I.
Since it is connected to the output side of the 0R element 141, the logical value of the output of the 0R element 141 is 1.

Therefore, since the logical value of both inputs of AND element 142 is 1, the logical value of the output of AND element 142 is also 1. Therefore, the logic value of both inputs of NAND element 143 is 1. Therefore, the logical value of the output of NAND element 143 is 0. Control pulse generator a operates. In summary, when the mirror flaps to the finder position, control pulse generator a is activated. 10 ms backward step switch I is shifted to the tenth output side by control pulse generator a.

In the tenth step, the logic value of the tenth output of step switch I is O. A logic 1 signal is therefore produced at the output of NAND element 154. Step switch I 10th
This is because the logic value on the input side of the NAND element 154 connected to the output side of is O. The output of the NAND element 154 operates the shutter opening device, and the first shutter opens the shutter.
The opening of the shutter at step 0 takes place after the auxiliary switch is closed and the mirror is lowered, which means that the camera is again able to measure exposure. Next, the control pulse generator a shifts the step switch I to the eleventh output side.

However, the eleventh output is not used. Therefore 10ms
Then shift to the rear 12th output side. In the twelfth step,
The logic value of the twelfth output of step switch I is O.
In a twelfth step, it is interrogated via the feedback path 24 whether the measuring key or the switch 31 of the continuous influence device is closed. If the measuring key or switch 31 is open, the 10 ms backward step switch I is shifted to the thirteenth output by the control pulse generator a. 12th
In step A, clock pulse generator a is in its normal state.

That is, one clock pulse is still generated every 10 ms. In the normal program (i.e. when the measurement key is not pressed and the continuous shooting device is not activated)
The clock pulse generator shifts advance switch I to the 13th step and then to the 14th step.

In the fourteenth step the program is terminated so that the energy supply is shut off. When the measurement key is pressed in the 12th step, the control/program unit controls the step switch I to the 0th step to perform exposure measurement.

A detailed description related to this will be provided later. 1. exposure measurement 2. Continuous shooting This is done in the section.

Here, to add a slight note, when the measurement key is pressed and the release is not pressed, only exposure measurement program steps "O" to "13" are performed. In other words, only exposure measurement is performed. If the release button is pressed at the same time, the program restarts from steps 541 to 112'2. In the thirteenth step, the logic value of the thirteenth output of step switch I is O. Therefore, NOT element 1
At the output of 59, a signal with logic value 1 is produced. This signal causes the diaphragm control device to conduct. As a result, the aperture opens as described above. Since the mirror is in the viewfinder position and the shutter and aperture are open, the camera is again ready to take a picture. 10ms backward step switch I shifts to the 14th output side.

In the fourteenth step, the logic value of the fourteenth output of step switch I is O. Selection switch 3 for continuous shooting device
1 is open, a positive potential occurs on the actual value input line 1. Therefore, the logical value of one input of the 0R element 160 is 1.
It is. A signal with a logic value of 1 is generated at the output side of the 0R element 160, and therefore the logic value of the output of the 0R element 161 is also 1.

Therefore, the logic value of one input of NOR element 147 is 1,
The logic value of the other input is O. Therefore, NOR element 14
The logic value of the output of 7 is O. The logical value of the output of AND element 157 is O. This is because one input side of the AND element 157 is connected to the fourteenth output side of the step switch. Therefore, the logic value of both inputs of NOR element 158 is O. At the output of NOR element 158, a signal with a logic value of 1 is generated. This signal is transmitted via the control line 6 to the power supply device (energy coupling). All components of the process control system and camera are now shut down. Step switch I
The fifteenth output of is not excited. The 15th output side is
This is used for the purpose of completely stopping the power supply when a failure occurs in the logic circuit and the shutdown is not completed in the 14th step. That is, as in the case described above, a control pulse is sent to the control line 6 when the step switch I shifts to the fifteenth output side. In the program control described above, only the release key is operated, automatic aperture adjustment is performed, an exposure program is executed, and the aperture is opened again.

However, other program controls than those described above are also possible. 1
．． Exposure Measurement In exposure measurement, the measurement key 26 is operated.

As a result, contact 40 is closed. 0th step to 3rd step
Program control up to the step is the same as in the case described above. The automatic adjustment of the aperture ends in the third step. The aperture value can be read using the pointer attached to the aperture ring. If the optimal aperture value cannot be obtained under the brightness of the subject, the indicating device is activated. This indicating device, for example by means of a light emitting diode, indicates that the exposure time that has been set is too short. This indicating device is not shown, but from the automatic aperture adjustment device in FIG. 1 to the aperture 10,
It is inserted into and connected to the connection line provided up to point 11. When the actual value of the aperture value and the set value are compared, the aperture is supplied with a control pulse from the automatic aperture adjustment device, which causes an adjustment movement of the aperture. The shooting adjustment time is 30ms. After this time, if a control pulse is still present on the connection line, this FbI polishing pulse is detected and the corresponding light-emitting diode is switched on. Two different control lines 10, 11 are provided for the two adjustment movement directions of the diaphragm, so that depending on whether the actual value for the diaphragm adjustment falls below or exceeds the set value, one of the control lines changes. A control pulse for closing the diaphragm 1 is applied, or a control pulse for opening the diaphragm 6 is applied to the other control line.In a corresponding manner, one light-emitting diode is provided in each of the two control lines, These indicate underexposure or overexposure.As mentioned above, step switch I
shifts from the third output to the fourth output.

In the fourth step, the logic value at the fourth output is O.
Since the release key 27 is not pressed, the contacts 39 are open. Therefore, one input side of the 0R element 162 is supplied with a signal having a logic value of 1. Therefore, 0R element 16
The logical value of the output of 2 is also 1. The output side of 0R element 162 is connected to the input side of NOR element 163.

Therefore, the logical value of the output of NOR element 163 is O. Therefore, the logic value of both inputs of 0R element 164 is O. 0R
This is because one input side of the element 164 is connected to the fourth output side of the step switch I (the logic value of the fourth output side is 0), and the other input side is connected to the output side of the NOR element 163. .

The output of 0R element 164 is connected to the preset input of counter D.

A logic zero signal is applied to the preset input of the counter D. The cumulative counter D (flip-flop circuit) is set from 0 to 1. As a result, since the fourth output side of step switch I is excited, 8 is added to the decoder whose output is 4. Therefore, step switch I is the fourth switch.
Step (4th output side) to 12th step (12th output side)
output side). In the twelfth step, the first
The logic value on the output side of 2 is 0. If you operate the measurement key 26 and close the contact 40, the actual value input line (release key)
The potential 27 is a reference potential. Therefore, AND element 165
The potential of the output of is equal to the reference potential.

AND connected to actual value input line (release key) 27
This is because the logic value on the input side of element 165 is O. Therefore, the logic value of both inputs of NOR element 146 is O, and NOR
The logic value of the output of element 146 is one. Therefore, the logical value of the output of 0R element 148 is also 1, and the logical value of the output of 0R element 149 and the logical value of the input of NOR element 145 are also 1.
It is.

Therefore, the logical value of the output of NOR element 145 and the logical value of the input side of NAND element 143 connected to NOR element 145 are O. The logical value of the output of the NAND element 143 is 1, and this output is supplied to the control pulse generator a via the control line 19. As a result, the monopod pulse generator a is cut off. Therefore, as long as the measuring key 26 is pressed and the contact 40 is closed, the step switch I remains on the twelfth output side. If the measurement key is pressed while the release is not operating as described above, the step switch I will step up the release program and set to the 12th step after exposure measurement.

It is then interrogated whether the measurement key is pressed again, ie whether the measurement is to be repeated. If it is pressed again in this way, the exposure will be repeated, that is, the exposure will be measured again as described below. For example, if you receive an instruction that the set exposure time is too short, and you adjust the exposure time setting device (however, the measurement key 26
When changing the preset value of the exposure time setting device (with contact 40 kept closed), contact 38, which was previously closed, is opened.

When the exposure time setting device is then adjusted to another position to reset another exposure time, the contacts 38 are closed again.
The contact 38 is connected to the NOT element 16 via the actual value input line 17.
Connected to 6. Therefore, when changing the preset value of the exposure time setting device, a positive pulse is generated at the output of NOT element 166. The rising edge of this positive pulse is supplied to flip-flop circuit 42 via input 42c. When the pulse is applied to the input side 42c, the flip-flop circuit 42 is applied to the output side 42a of the flip-flop circuit 42.
The positive potential of the so-called D input side 42b of is transferred. The flip-flop circuit 42 is then reset. However, for this purpose, the flip-flop circuit 42 must be prepared (ie, set) by applying a signal to the input 42d. If the selection switch 37 for blocking the release is not closed or the release key 27 is not pressed, the logic value of one input of the NAND element 174 is O. In this case, the output side of the NAND element 174 and the A connected to the output side of the NAND element 174
The logic value on the input side of the ND element 175 is 1. When the measurement key 26 is closed, the logical value on the output side of the AND element 165 and the logical value on the manual side of the NOR element 146 connected to the output side of the AND element 165 are O, as described above. .

In the twelfth step, the logic value of the twelfth output of step switch I is O. Therefore, the logic value at the input side of the NOR element 146 connected to the twelfth output side of the step switch I is also O. Therefore, the logic value of the output of NOR element 146 is one. Furthermore, the AN connected to the NOR element 146
The logic value at the input side of D element 175 is also 1. Therefore, the logical value of the output of AND element 175 is 1. Therefore, the logic value 1 is present at the input side 42d of the flip-flop circuit 42.
signal is applied. When the flip-flop circuit 42 is set, the output side 42a of the flip-flop circuit 42
A signal with a logic value of 1 is supplied to the input side of the 0R element 1671 connected to the 0R element 1671. Therefore, the logic value of the output of 0R element 167' is 1. Further, the logical value of the output of the NOR element 130 is O. Further, the logic output of the AND elements 131 and 132 is 0. As a result, the increment switch I is controlled by the counter A.
-D is reset to the 0th step (0th output) via the clear input side or the reset input side. When the progressive switch I is reset to the 0th step, the exposure is measured again as described above and the aperture value is set. The exposure time setting device can then be adjusted in the direction indicated by the arrow until the display disappears. When proper exposure is obtained by pressing the measurement key 26 and the step switch I is on the 12th output side, if the release key 27 is further pressed, the clear input side of the counter D of the step switch I or A signal with a logic value of 0 is supplied to the reset input via the output of the AND element 131.

The opposite operation now occurs as if a signal of logical value 0 was supplied to the counter D from the fourth output of the stepwise switch I.
That is, the value 8 of the counter D is subtracted from the decoder value 12. Therefore, step switch I shifts to the fourth step (fourth output side). Contact 39 is closed and 0R element 162
The logical value of the input is O. Therefore, the logic value of the output of 0R element 162 is O. Therefore, the logic value of the output of NOT element 168 is one. The output of NOT element 168 is applied to input side 43c of flip-flop circuit 43. A logic 00 signal is produced at the twelfth output of the step switch I, one input side of the NOR element 146 is connected to the twelfth output, the other input side is connected to the output of the AND element 165, and the contact When 40 is closed, a signal of logical value 0 is supplied to the input side of AND element 165 via actual value input line 26 . Therefore, the logic value of both inputs of NOR element 146 is O
, and the logical value of the output of NOR element 146 is 1.
Therefore, the flip-flop circuit 43 has a NOR element 146
is set by the output of The rising edge of the signal applied from NOT element 168 to input 43c causes flip-flop circuit 43 to reset. As a result, the non-inverting output side of the flip-flop circuit 43 has a so-called D input side 4.
A logic 1 signal of 3b is generated. One input side of the NAND element 169 is connected to the inverting input side 43a of the flip-flop circuit 43.

Therefore, a signal with a logic value of 0 is supplied to the input side of the NAND element 169.

Therefore, the logic value of the output of NAND element 169 is 1.
Therefore, the logical value of both inputs and output of AND element 170 is 1. Since the film feed motor is stopped, the contact 41 is open and the actual value input line 28 has a logic value of 1.
A signal is generated. Therefore, the logical value of both inputs of NAND element 171 is 1. Further, the logical value of the output of the NAND element 171 is O. Therefore, the logic value of one input of AND element 131 is O.

The output side of the AND element 131 is connected to the clear input side of the counter D, and its logical value is O. As already mentioned, step switch I is set to the fourth step (fourth output side). Since the contact 39 of the release switch 27 is closed, the step switch I is at the 5th, 6th, 7th, 8th, etc.
Shift to the output side of... and press the contact 40 of the measurement key 26.
After opening, the previously described exposure process is carried out until the process control device is switched off at the fourteenth output. In this case, exposure is performed using an aperture value instructed based on exposure measurement. If the measurement key 26 is turned on, the step switch I remains at the twelfth output, as described above. If the release key 27 is pressed again, the process described above is repeated. 2. Continuous photographing device When photographing a plurality of photographs continuously, it is only necessary to close the continuous photographing selection switch 31.

Next, the operation of the continuous photographing device will be explained in terms of three subroutines. 2.1. When pressing the release key 27.

In this case, imaging is performed as described at the beginning.

Stepping switch I shifts all output sides from the 0th output side to the 14th output side, and automatically returns to the 0th output side. Then, the shift continues from the Oth output side again. Shifting of step switch I continues until release key 27 is released. Releasing the release switch 27 shuts off the power supply when the step switch I is on the fourteenth output side. Each time you take a picture, the exposure is measured again and the aperture value is adjusted. The automatic resetting of the stepwise switch I from the 14th output to the 0th output takes place as follows; when the switch 31 is closed, the 0 is output via the actual value input line 1.
A signal with a logic value of 0 is applied to one input side of the R element 160. Since the switch 37 for flood prevention is open, the NOT element 1 is connected to the other input side of the 0R element 160.
A logic zero signal is applied via 67. Therefore 0R
The logic value of the output of element 160 is O. Release key 2
7 is turned on, the logical value of both inputs of the 0R element 162 is O. Therefore, the output of 0R element 162 and 0
The logic value of both inputs of R element 161 is O.

Therefore, the logic value of both inputs and the logic value of the output of NOR element 147 are 011, respectively.

Since the film feed motor is not operating, switch 4
1 is open. A signal of logical value 1 is therefore applied to one input of the AND element 172 via the actual value input line 28. Since the logical value of both inputs of AND element 172 is 1, the logical value of the output of AND element 172 is 1.
Therefore, the logic value of the output of 0R element 167' is 1, and N
The logical value of the output of the OR element 130 and the outputs of the AND elements 131 and 132 is O. As a result, as already mentioned, the logic value at the clear inputs of counters AD is 0, and increment switch I is reset to the 0th output. 2. When the measurement key 26 is pressed without pressing the release key 27.

In this case, the operation is as described in Section 1.

Stepping switch I shifts from the 0th output to the 3rd output and then up to the 12th output. The control pulse generator a is switched off via the control line 19 (as explained for the exposure measurement in section 1), so that the step switch I
remains at the twelfth output.

In this case, only the exposure measurement is performed. When adjusting the set value of the exposure time setting device to an appropriate value, exposure measurement and aperture adjustment are repeated as described above.

Details are described in Section 1 (Exposure measurement).

3. When the measurement key 26 and release key 27 are pressed.

When the measurement key 26 is pressed and the 12th output side of the advance switch I is excited, if the release key 27 is pressed, the advance switch I is activated to the preset input side of the counter D as soon as the film feed motor stops. to the fourth output.

That is, when switch 31 is closed, a logic 0 signal is produced at the output of 0R element 160 and at one input of 0R element 161.

If the release key 27 is then pressed to close the contact 39, a signal of logical value 0 is supplied to the controllable input side of the 0R element 162 via the actual value input line (release key 1) 27. Since the logical value of the output of 0R element 162 is O, the logical value of the other input value of 0R element 161 is O.

Therefore, the logical value of the output of the 0R element 161 is also O. Therefore, the logic value of the output of NAND element 169 is 1, regardless of the logic value of the input side of NAND element 169 connected to flip-flop circuit 43.

One input side of the AND element 170 is the NAND element 169
Since the output of the AND element 170 is connected to the output side of the AND element 170, and a signal with a logic value of 1 is applied to the other input side of the AND element 146, the logic value of the output of the AND element 170 is 1.

If the film feed motor is stopped and the switch 41 is open, the logic value of both inputs of the NAND element 171 is 1.
It is. Therefore, the logical value of the output of the NAND element 171 is O.
It is.

Further, the logical value of the output of the AND element 131 is also O.

A logic zero signal is applied to the preset input of the counter D, so that the increment switch I is shifted to the fourth output. At this time, if the release key 27 remains pressed, the step switch I shifts sequentially from the fourth output side to the twelfth output side. If the contact 39 of the release switch 27 is already open when the step switch I is on the twelfth output side, the control pulse generator a is cut off via the control line 19, so that the step switch I is on the twelfth output side. Stay on the output side of 12.

On the other hand, if the contact 39 of the release key 27 is still closed when the forward switch I is in the twelfth output, the described operation is repeated until the release key 27 and the measuring key 26 are released.

Stepping switch I is therefore shifted from the twelfth output to the fourteenth output. When the step switch I is shifted to the fourteenth output, the power supply is switched off by the step switch.

When continuously photographing by pressing the measurement key 26 and the release key 27, the exposure time and aperture value are not changed for each photograph.

That is, exposure is performed with the exposure time and aperture value fixed. 3. Cutting off the automatic aperture adjustment device When photographing is to be performed based on the manually adjustable aperture value and exposure time, the automatic aperture adjustment device can be shut off by closing the selection switch 44.

In this case as well, the three cases described in Section 2 apply.
3.1. When only the release key 27 is pressed.

The details of the work are as mentioned above. 3.3. When the measurement key 26 and release key 27 are pressed.

If the measurement key 26 is pressed, 3.2. As described in section 1, step switch I remains at the twelfth output.

Next, if you press the release key 27, the actual value input line 27
A signal with a logic value of 1 is supplied to the input side 43c of the flip-flop circuit 43 via the 0R element 162 and the NOT element 168. As a result, Sections 1 to 2.3. The flip-flop circuit 43 is reset as described in section 1.

The subsequent operations are also similar. Step switch I is set by counter D to the fourth output. Step switch I
If the release switch 27 is pressed when the switch I is set to the fourth output side, the step switch I shifts sequentially from the fifth output side to the twelfth output side. If the measurement key 26 is pressed, the step switch I remains on the twelfth output side. If the release key 27 is pressed again, the operation is repeated. When the measurement key 26 is released, the step switch I
is shifted to the 14th output side. Progress switch I is the first
4, the power supply is cut off via the control line 6 after the film feed motor is stopped, as already explained in the 14th step. 4. If the release blocking brightness conditions are poor and the optimum value of the aperture cannot be found, the effect can be stopped as follows; that is, by closing the release blocking selection switch 37,
If there is a risk of photographing due to inappropriate exposure, you can stop photographing after adjusting the aperture value.

When the selection switch 37 is closed, the increment switch I is switched to the fourth
It remains at the output of the output for a short time, then immediately shifts to the twelfth output and remains at the twelfth output. The indicating device notifies the photographer that the exposure time set value is inappropriate and that the exposure time or brightness conditions need to be changed. FIG. 2 shows the electronic process control system of the camera, which includes an aperture setting device and an automatic exposure time adjustment device V.

The process control device of FIG. 1 and the process control device of FIG. 2 are similar. In the process control device shown in FIG. 2, an automatic exposure time adjustment device V is used instead of the automatic aperture adjustment device. Also, instead of the exposure time setting device, an aperture value setting device is used. The automatic exposure time adjustment device ζ detects the brightness of the subject under the set aperture value and converts the brightness of the subject into an electrical signal. This electrical signal controls the exposure time shaping oscillator. However, in the embodiment of FIG. 2, an exposure time shaping transmitter is included in the automatic exposure time adjustment device. Therefore, unlike the embodiment shown in FIG. 1, it is not necessary to provide the exposure time forming transmitter c. The film sensitivity set value and the aperture value set value are supplied to the automatic exposure time adjustment device V via actual value input lines 32' and 33'. In the embodiment of FIG. 1, a set value for the exposure time is supplied to the control and programming unit. On the other hand, in the embodiment according to FIG. 2, the set value of the diaphragm value is supplied via the actual value input line 17'' to the control and programming unit.
operate. The diaphragm control device is controlled only by step switch I. The automatic exposure adjustment mechanism selection switch 30 can be switched off via the actual value input line 2' and the control and programming unit. The construction and operation of the remaining portions of the embodiment of FIG. 2 are similar to those of the embodiment of FIG.
This is similar to the diaphragm control device (with control pulse generators A, b and diaphragm drive).

Note that (master) clear line 12 resets all counters of this pulse 4ζ sidewalk switch I.

This resetting takes place exclusively when the electronic circuit of the control device is switched on. This takes place, for example, when the electronic circuit of the control device is switched on by pressing the release 27. The pulses produced by this closing connection are differentiated by capacitor 51 (FIG. 3) and fed via line 12 to the clear input terminals of counters AD. This causes the counter to be reset. The actual value line 16 becomes active when the release lock device is connected via the selection switch 37 (FIG. 4). This release lock device adjusts the aperture to the set exposure time during exposure measurement. When the aperture value cannot be adjusted to the required value, the third step is prevented from moving to the fourth step.
Even if 7 is pressed, the line 16 is locked, so the 7 release 1 program (steps 64'-012') is not started.

[Brief explanation of the drawing]

1 and 2 are partial block diagrams of an embodiment of the camera of the present invention, and FIGS. 3 and 4 are block diagrams of the control and program assembly comprising the logic control portion of the camera of the present invention. 1...Step switch,...Control/program 12, A, b...FbI leg pulse generator, c...Exposure time formation transmission equipment,...Hakudo aperture adjustment device,...Hakudo exposure time adjustment device,...
...Exposure time setting device, ...Film sensitivity setting device, ...Aperture value setting device, 26
...Measuring key 27...Release key 1.

Claims (1)

[Claims] 1. Progressive switch I and control/program unit II
A control program assembly 30 is provided with a control program unit II, on the input side of said control and program unit II various actual values (1, 2,
3, 4, 16, 17, 26, 28), and the control and programming unit II is also connected to the input side of the step switch I for skipping or jumping the step or for resetting the step switch I. Furthermore, the control and programming unit II is connected via a control line 19 to two control pulse generators IIIa, IIIb for activation or disconnection of the control pulse generators IIIa, IIIb, The pulse generator is connected to the other input side of the stepwise switch I and the control program unit I
The step switch I is actuated to shift in step steps depending on the control pulses of I, and the step switch I has a plurality of outputs including a film advance motor 5, a mirror control Device 13, shutter opening/closing device 22
, 14. A camera member involved in photographing, such as an automatic aperture adjustment device IV, is connected, and the camera member is operated depending on the step of the step switch I, and furthermore, the plurality of outputs of the step switch I are connected. an exposure time shaping oscillator IIIc whose output side can set the desired exposure time via a first feedback line 20 by means of an exposure time setting device VI;
The other one of the plurality of output sides of the step switch I is connected to one of the control pulse generators IIIa and IIIb via the second feedback line 21. , at least one further of the outputs of the stepwise switch I is configured as a third feedback line for program control as a function of the various actual values of the camera components for photographing. 24 to another input of the control and programming unit II, said one control pulse generator IIIb being connected to the voltage at the opening of the shutter actuated by the shutter opening/closing device 22, 14. At the beginning of the dependent start-up time the step switch I is controlled by the step switch I.
I is controlled after a time depending on the respective battery voltage loss to activate the exposure time shaping transmitter IIIc via the first feedback line 20, which in turn activates the stepwise switch I is connected to said another input side of the
A photographic camera characterized in that, while one of the control pulse generators III and the exposure time forming transmitter IIIc are in operation, the other of the two control pulse generators IIIa is stopped. 2 Step switch I and control/program unit II
A control program assembly 30 is provided with a control program unit II, on the input side of said control and program unit II various actual values (1, 2,
3, 4, 16, 17, 26, 28), and the control and programming unit II is also connected to the input side of the step switch I for skipping or jumping the step or for resetting the step switch I. Furthermore, the control and programming unit II is connected via a control line 19 to two control pulse generators IIIa, IIIb for activation or disconnection of the control pulse generators IIIa, IIIb, The pulse generator is connected to the other input side of the stepwise switch I and the control program unit I
I actuates the step switch to shift in step steps depending on the control pulses of I, and the step switch I has a plurality of outputs, on which the film advance motor 5 mirror control device is connected. 13, shutter opening/closing device 22,
14, etc., which are involved in photographing, are connected, the camera member being actuated depending on the step of the step switch I, and the output of one of the plurality of output sides of the step switch I. On the side is the film speed setting device V
III and an aperture value set IX via a first feedback line 7, 9, 20, 23, and is connected to the automatic exposure time adjustment device V controlled by the aperture value set IX, and The other one of the outputs is connected via the second feedback line 21 to one of the control pulse generators IIIa, IIIb, and at least one of the outputs of the step switch I is connected to one of the control pulse generators IIIa, IIIb. A connecting line 2 configured as a third feedback line for program control of the two outputs as a function of the various actual values of the camera components involved in the photographic acquisition.
4 to another input of the control and programming unit II, said one control pulse generator IIIb being connected to the voltage at the opening of the shutter actuated by the shutter opening/closing device 22, 14. Controlled by the step switch I at the beginning of the dependent start-up time, the step switch I is controlled after a time depending on the respective battery voltage loss to activate said first feedback line 7, 9, 20, 23 for actuating an automatic exposure time adjustment device V, which is further connected to said further input of the stepwise switch I and one of said control pulse generators IIIb. A photographic camera characterized in that the other one of the control pulse generators IIIa is stopped while the automatic exposure time adjustment device V and the automatic exposure time adjustment device V are in operation.