DE2356530A1 - PHOTOGRAPHIC CAMERA - Google Patents

Description

ROLE Γ - ¥ ERE
Franke & Heidecke
Braunschweig

A 952 "

Patent application ;;

Photographic camera

(Addition to patent application P22 40 920.7)

The invention relates to a photographic camera in which before and during an exposure process and again during the after exposure Tensioning the camera different functions in the camera can be controlled. '

A well-known photographic camera (DT-OS 2.141 943) with an electronic shutter and an automatic exposure circuit has a control device the sequence of exposure and shutter release according to a predetermined program controls. When switching on the control device via the shutter release button of the camera runs a mechanical one Control element, which is determined in individual. ^ Switching stages Functional processes.triggers-

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Thus, in the first stage, the exposure control circuit is put into operation, which is via an EE measurement determines the required value of the aperture. At the same time, according to the particular aperture opening, locking elements are set so that that the shutter blades can only open up to this aperture value, and when it is reached ■ In this position they are fixed by a lock triggered by an * electrical signal.

In the next stage, the control element switches the Drive mechanism of the shutter blades so that they are at the preset aperture value to open. At the same time, the controller controls the exposure control circuit of the mode of operation to adjust the aperture to the mode of operation for determining the exposure time.

Subsequently, the propulsion goods become Closing of the shutter blades released, and on a signal from the exposure control circuit they initiate the closing movement of the shutter blades.

By turning back the control member after the film exposure has taken place, the shutter tension is at the same time the control device is preprogrammed again in such a way that the above-described program

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steps are carried out in the same way when releasing the control member again.

Such mechanical control devices have the disadvantage that they due to their inertia ■ working moments with undesired start-up and delay times, that they are "little space-saving, • and that there are signs of wear and tear with a high number of images and thus .faults occur.

In the mechanical control device described above becomes the process of a photographic The image is always the same when the shutter button is pressed expire. It is not possible to change the control program without the entire control device to replace it with another one.

The present invention is therefore based on the object of creating a photographic camera in which all necessary for a photographic recording and by starting individual. . Camera elements running processes are ^{electronically linked and consequently "controlled" according to an easily exchangeable 1} program that can be varied by preselection, whereby all processes can be aborted, suspended, skipped and repeated at will.

This task is through a central electronic Process controller solved, the one with several 809820/0944

Contains step switch provided with outputs, which is controllable so that each one output with an electrical one different from the other outputs. Signal can be assigned, and the one with the step switch has feedback control and program part, in which all the operating state individual camera elements signaling ■ actual values can be entered, whereby the outputs of the Step switch indirectly via the control and program part and / or directly with the individual Camera elements, are connected.

0

The camera according to the invention not only eliminates the disadvantages described at the beginning, but also The advantage of the invention is primarily that the previously usual complicated geared Connection between the camera elements involved in the implementation of a photographic recording resolved and through an electronic link that is much easier to implement has been replaced in the exclusively made-up Components are used. This in turn enables easy and inexpensive conversion and modification of the functional interaction of the individual camera elements, thus a simple and cost-saving modification of one once the exposure program has been selected, if after a certain period of time the need for it arises.

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L- INSPECTED

should give.

Further refinements and expedient developments of the subject matter of the invention are shown in the dependent claims, and their advantages are highlighted in the description of the figures.

In the drawing, an embodiment of the subject matter of the invention is shown. Show it:

Fig. 1 is the block diagram of the photographic camera with time preselection and'Blendeneinst ellautomatik, - _r '- ■

Fig. 2 is the block diagram of the photographic Camera with aperture preselection and timer. Automatic pinsetter,. ". '

Fig. '3 and' ■. .

4 shows a logic circuit diagram for the in .and 2 outlined by dash-dotted lines. Excerpts from the block diagrams,

5 shows the circuit diagram for the voltage supply. VII of the camera in Figs. 1 and 2,

Fig. 6 shows the circuit diagram for the control pulse generators IHa. and IHb and the timing generator HIc in Fig. -1 and 2, 'Fig. 7 the circuit diagram for the diaphragm adjustment', automatic. IV in Fig. ' 1,

8 shows the circuit diagram of the display device XII.

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for incorrectly selected exposure time or wrongly selected aperture in Fig. 7,

9 shows the circuit diagram for the shutter control device XII with the shutter drive XIII in Fig. 1 and

Fig. 10 an explanation of the circuit symbols in Fig. and FIG. 4 shows the corresponding American and German symbols.

Image. 1 shows the circuit diagram of the information flow the camera with an automatic aperture setting function. the individual camera elements and functional units are designated with Roman numerals, the control and functional units connecting. Actual value input lines are designated with Arabic numerals and in the further FIGS. 3 to 9 are placed in circles.

The arrows indicate the direction of the flow of information between the individual functional units.

The heart of the circuit is a step switch I and a control and program part II. The step switch, which is commercially available as an integrated component I consists of the counters A, B, C and D and the decoder with 16 outputs, one after the other can be assigned a signal by clocking the step switch. The step switch works according to the Dual system and is stepped by pulses arriving at its clock input via the control line 18.

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progressed wisely, with the next following Output is controlled. The four counters A,. B, C, and D have a Clear or Reset Zero input on over which they are based on their starting point. position can be reset. All inputs become clear activated, the step switch 'I is reset to its starting position in which output "zero" is activated. The counters C and D each have a so-called preset input through which the step switch is enabled to have several switching stages to skip. For example, by applying a zero signal to the preset input of the Counter C of the step switch of switching step ■ "One" - bypassing switching steps two., Three immediately open. Switching step four set.

The Ausgänge.des Sehrittschalters I are connected either directly or through the tax and Program Section II · with the individual camera elements or the individual functional units. The control and program part II consists of various logical ■ logical linking elements AND, OR, NAND, NOR, which process the signals coming in via the actual value input lines according to the selected exposure program and feed them to the output lines at the control and program part, where they can be connected to the 'individual _ ■ -' ■ ',

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Fionction units or camera elements arrive. The symbols of the link elements are in Fig. 10 is shown according to German and American standards and their mode of operation is straightforward can be seen from the respectively assigned function table. E means the inputs and A the output of the respective linking element. O and 1 show the value of the respective input or Output, where "0" means "logical 0" and "1" means "logical 1". For example the output of an AND element only has the value "logical 1" if both inputs have the value "logical 1", in other words: only then occurs at the output of an AND element a signal when both inputs are activated. Is only one at a time or none at all If the input is activated, the output of the AND element has the value "logical 0".

In Fig. 5, the electrical circuit of the power supply device VII of the camera is shown together with the release button XVI and the measuring button XVII. The voltage of the battery 44 is present at the output Y of the power supply device. At the output S, the switched battery voltage of 10 volts can be removed, and only when the measuring button or the trigger is actuated and thus the contact 40 or contact 39 is closed. In this case the thyristor 45 becomes conductive and output X 50 9820/0

is connected to the battery 44. At the same time, the switched battery voltage is also supplied via a; 5 volt stabilizer 46 reduced to 5 volts at the output of the stabilizer. The output of the stabilizer 46 is connected to the output Z of the power supply device VII. When the contact 40 or 39 is closed, a negative pulse occurs in the control lines 26 and 27, or in other words: the control lines 26, 27 have the in this case Significance "logical 0". When the switch 40 or 39 is closed, a positive pulse continues to occur in the control line 12, that is to say the control line has the value "logic 1". The contacts 40 and 39 are bridged after their closure by the conductive transistor 4-7, which forms a so-called self-holding circuit with the resistors 48: and 49 and which is switched off by driving the transistor 50 via the control line 6 the power supply can be blocked. ; -.- ■ ".

In Fig. 6 is a possible structure of the control im- "'. pulse generators III shown, namely des Steüerimpulsgeiierators. HIa for advancing the step switch in a time interval of, for example 10 ms, of the control pulse generator HIb, who has the task that is caused by the battery voltage loss different start-up

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compensate times of the shutter opening device, and instead of the control pulse generator IHa switches the step switch to call up the exposure time, and the timing generator IHc, which is switched on with the start of the actual exposure and after the preselected exposure time the step switch via its control line 8 and control line 18 by one Switching step continues.

The control pulse generators are of a known type and are essentially constructed in the same way. Its core consists of a programmable unijunction transistor (PUT) 54 whose anode gate 54 ^f to a voltage divider circuit 55? 56 is connected, which in turn is connected to the output Z of the power supply device VII. The anode of the PUT 54 is connected to the center tap of an RC element 57, 58, while the cathode is connected to zero potential via a resistor 59. The PUT 54 fires when the voltage on the capacitor exceeds the voltage on the anode gate 54 'of the PUT by approximately five volts. The capacitor 58 discharges via the PUT 54, and a pulse-shaped voltage is produced at the resistor 59, which voltage is applied to the base of a transistor 60 via the control lines 25, 15 and 8. The transistor 60 turns on, and for the time of its conductive state is over

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the control line 18 and the inverter 134 (Fig. 3) a positive pulse at the clock input of the step switch I. The width of the positive pulse becomes ■ determined by the discharge time of the capacitor 58. Has the capacitor discharged so far that his The discharge current drops below the holding current of the PUT 54, so the PUT locks, and the clock input of the step switch I receives the at the output Z of the Power supply device VII connected power line * 61, the resistor 62 and the inverter 134. (Fig. 3) the significance "logic zero". As soon as the capacitor 58 returns to the above voltage is charged, it ignites. PUT and the process repeats. The pulse spacing is determined by dimensioning the resistance 57 and of the capacitor 58 · The control pulse generator IHa .; is can be switched off by means of the transistor 63 connected in parallel with the capacitor 58, in that this by a positive pulse via the control line 19 is controlled. ''

The control pulse generator IHb is charged of the capacitor 58 does not have the connection Z the power supply device VII, but via the connection S '(10 volts switched); with the interposition of a transistor 64. The charging time of the capacitor is selected so that it corresponds to the time it takes to over-

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lead the lock from the closed to the open position is required. The high of Voltage at output S, which in contrast to the stabilized voltage at output Z accordingly the battery voltage losses can fluctuate, thus determines the charging time of the capacitor 58 with. Since the shutter drive is also fed by the same non-stabilized voltage, there is a delay a possible voltage drop at the output S or Y of the voltage supply device VII das Opening the shutter and at the same time delaying the charging of the capacitor 58. Because the control pulse generator IHb switches the step switch to the position "Calling up the exposure time" after the shutter has opened takes over, it is guaranteed that the exposure time is only queried when the shutter begins to open. The control pulse generator IHb is switched on via control line 21. This is done by transferring the transistor 65 into the conductive state, the collector-emitter path of which the base of the pnp transistor 64 with the Zero potential connects.

In the ZeitbildunggeneiEfcor IHc is the fixed resistance 57 replaced by an adjustable resistor 66, which via the time setting line 34 from the time setter VII can be operated. The charging time

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of the capacitor 58 determines the exposure time. The waveform generator is started by transferring the transistor 67 in series with the resistor 66 and the capacitor 58, the base of which with the collector ^ emitter path of a pnp transistor. 68 is connected to the conductive state. The transistor 68 is switched through by the appearance of a positive pulse in the control circuit 20 and thus causes the transistor 67 to become conductive. ■ "

In Fig. 7 is the circuit diagram of the automatic aperture setting IV shown. It measures the object luminance via the open aperture and sets this into an electrical signal that an aperture control device XIX activated. This aperture control device is used to control the actual aperture drive. X controlled. The diaphragm drive X equipped with a linear motor is in the DT patent application P 22 09913.4 (A 866) described in detail. . ".-. ■" "." "::

In FIG. 7, a photo element 71 arranged behind the lens diaphragm 70 is connected to the two inputs an operational amplifier 72 is connected. Of the Output of the operational amplifier is via a variable resistor 73 with the inverted Input (minus) of the operational amplifier rüokge * - '

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couples. The resistor 73 can be changed via the film speed setting line 32 from the film speed setting VIII and via the time setting line from the time setting VI. The exit. of the operational amplifier 72 is connected to the non-inverted input (plus) of a second operational amplifier 75 via a capacitor 74. A voltage divider circuit formed from resistors 76 and 77 is connected to the inverted input of operational amplifier 75 against zero potential. The center tap of the voltage divider is connected via a resistor 78 to a potential line 79 which is connected via the terminal W to half the stabilized 5 volt voltage (output Z) of the power supply device VII. The non-inverted input of the first operational amplifier 72 is also connected to this potential line 79 ′. The output of the operational amplifier 75 is connected via two series-connected resistors 80 and 81 to the base of an npn transistor 83 and a pnp transistor 84 of the diaphragm control device XIX. The collector of the transistor 83 is connected to the power line 82 connected to the output Z of the power supply device VII, and the collector of the transistor 84 is connected to the zero potential. The two emitters of transistors 83 and 84 are connected to each other and across

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a resistor 85 limiting the voltage gain of the operational amplifier 75 is fed back to the inverted input of this operational amplifier. The feed line 86 of the transistors is also connected to the emitters of the transistors; Aperture drive ν X connected, the other feed line, 87 is connected to the potential line 79. On the two feed lines. 86 and 87 ^of: Blendenäntriebs X is the display device _for: incorrectly chosen - ■ timing XI, which is explained in more detail in Figure 8, is connected.. The two operational amplifiers 72 and 75 obtain their operating voltage via the power line 827. The connection line between the resistors 80 and 81 is connected to the potential line 79 via a transistor 88. _: The base of this transistor is connected to the power line 82 via a resistor 89 and to zero potential via a transistor 90. The base of the transistor 90 is connected to the control lines 7 and 23. The base of the transistor 83 and the transistor 84 can be controlled both via the control line 11 and can be connected to the zero potential via a transistor 9i, if its base via the. Control line 10 receives a positive pulse. The connection line between the capacitor 74 and the non-inverted input of the operational amplifier 75 is via the collector-emitter path of an npn. Connect transistor 92 to potential line 79

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bound. The base of this transistor is connected to the control line 9.

The mode of operation of this switching arrangement is as follows: If no luminous flux hits the photo element 71, for example as a result of the completely closed shutter 70, then there is at the outputs the operational amplifier the center potential of the potential line 79- The transistor 88 is turned on and connects the output of the operational amplifier 75 and the bases of the transistors 83 84 with the center potential of the potential line 79. The transistors 83 and 84 are blocked. At dem.ivertierten input of the operational amplifier 75 is opposite to the potential of the potential line 79 negative nominal voltage. The transistor 88 is now blocked by over the control line 7 or 23 a positive pulse is applied to the base of transistor 90, making it conductive and the base of transistor 88 is at zero potential, then causes the difference the voltage between the non-inverted input of the operational amplifier 75, which is at MitteH-potential and the nominal voltage applied to the inverted input is one opposite the emitter potential of the transistors 83, 84 positive voltage at the output of the operational amplifier 75, so that the Transistor 83 becomes conductive and a current from the power line 82 via the shutter drive X to the Po-

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potential line 79 flows. The diaphragm drive adjusts the diaphragm 70 in the direction of a larger opening. As the aperture opens, more light falls on the photo element 71, and a negative voltage arises at the output of the operational amplifier 72, which is fed to the non-inverted input of the operational amplifier 75 via the capacitor Tk. Since the difference to the nominal voltage is now lower, a lower positive voltage appears at the output of the operational amplifier 75, and the transistor 83 is controlled less, so that a reduced adjusting current flows through the diaphragm drive X. The process described continues until the diaphragm has adjusted itself, the difference between the non-inverted and the inverted input of the operational amplifier is zero and there is no voltage with respect to the potential line 79 at the output. This means that the transistor 83 is no longer activated and the feed lines of the Bfendenantriebs X are de-energized. The aperture has reached its set value; If the diaphragm overshoots due to its inertia, more light than desired falls on the photo element, and a negative voltage is present at the output of the operational amplifier 72 or at the inverted input of the operational amplifier 75, which is greater than the nominal voltage. The voltage at the output of the operational amplifier 75 is thus negative compared to the emitter pot "; 5098 20/09 44

tial of the transistors 83, 84, so that the transistor 84 is conductive and a current in reverse Direction flows through the diaphragm drive, from potential line 79 via the feed line 87, via the feed line 86, the emitter-collector path of the transistor 84 to zero potential. The diaphragm drive then moves the diaphragm in the "close" direction. . "·

The variable resistor 73 determines the voltage gain of the operational amplifier 72 and thus The adjustment path of the diaphragm drive 10 and thus the diaphragm opening via the operational amplifier 75. The circuit is designed and tuned so that it is set for a given object luminance Film speed and selected exposure time are the best for a photographic exposure Aperture is adjusted.

Via the control line 11, the diaphragm drive can be operated directly in the diaphragm opening direction and via the Control line 10 can be adjusted directly in the shutter closing direction, in each case the transistor 83 or the transistor 84 become conductive and the current flow through the feed lines 86 and 87 as described above takes place.

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To make up for the mistake that this creates, that the photo element 71 not only the amount of light passing through the diaphragm 70 but the interfering light which is incident, for example, via the viewfinder and which does not contribute to the film exposure, is also one from the condenser 74 and transistor 92 Existing flare compensation circuit intended. The principle of this circuit is in the German patent application. P 22 13 442 (A 867) already described. When full closed shutter 70 is activated by controlling the transistor 92 via the control line 9, the so-called. Clamping the level of interference light, transistor 92. through., The now on the photo element 71 incident interfering light. causes a charging of the capacitor 74 in such a way that the non-inverted input of the operational amplifier'75 The facing plate of the capacitor has a higher potential than the center pole of the potential line 79 receives. After blocking the transistor 92 if it is activated via the control line 9 remains the charge of the capacitor 74 over the ge. entire aperture setting process described above obtain. After the transistor 88 has been blocked via the control line 7, this increased potential is present at the non-inverted input of the operational amplifier 75, so that.hier um.die Störlicht-. voltage increased voltage difference occurs. In order to

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causes a slightly larger adjustment of the diaphragm drive in the direction of opening the diaphragm than it according to the amount of light measured via the photo element would be required in itself. In this way, the influence of the additional interfering light, that does not contribute to the exposure of the film, turned off.

In the event that there is a prevailing object luminance and that at a given film sensitivity JLißlikjit_gejiiäl ^ not an optimal one

Aperture is adjustable, is done via the display device XI for incorrectly selected time setting "by lighting up one of two arrows the display "Timing — 2 & ~ 4mr-ZiLjid. ^ R_ ^ eji ^ too long ". The circuit of this display device is shown — in —Pig-T-8_ via two LEDs 93 and 94, which are shown in Series connected with one thyristor 95 and 96 each are. The anodes of the thyristors are connected to the output Z of the power supply device via a power line 97 VII connected. The control electrodes of the two thyristors are each connected to the Collector of a transistor 98 or 99 connected. The emitters of these two transistors are connected together and through a capacitor 100 at point 69 to the collector of transistor 90 in FIG Fig. 7 connected. The base of the two transistors is each connected to the via a resistor

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Collector of a further transistor 101 or 102 connected, the emitter of which is connected via two resistors 103 and 104, respectively, connected one behind the other is connected to the base of the other transistor 102 and 101, respectively. The connection of resistors 104 is connected to the emitter of the via a capacitor 105 Transistor 102 and "the connection of the resistors

Emitter '

de 103 through a capacitor 106 with the of transistor 101 connected. Besides, they are Emitter of the transistors 101, 102 with the feed

or 86 of the diaphragm drive X connected. "The series connection of thyristor 95 and light-emitting diode 93 or thyristor 96 and light-emitting diode 94 can be bridged through. ^ Di.e ^ Emitter-KoliektOr path in.s ^ pn ^" ^^^ transistor 107, whose base is on the one hand via a resistor -ΛΌ8 to the Stromlei device 97 and via a resistor 109 via the capacitor 100 at point 69 to the collector of the transistor 90 in FIG. 7 is connected. _;

The operation of the circuit according to FIG. 8 is as follows: ■. .

We assume that the time is already too short with a previous aperture adjustment process was selected so that the LED 93 lights up and the "Time setting too short" sign becomes visible. Now we change the time setting by means of the time adjuster VII and assume

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that with the prevailing object luminance and given film speed, this exposure time is also used too short for optimal exposure. With the control of the transistor 90 in Fig. 7 via the control lines 7 or 23, the transistor 88 is blocked, and the voltage difference in the operational amplifier 75 leads at the base of the transistor 83 to an opposite to the ' Emitter potential positive voltage, so that transistor 83 turns on and ^ .a current of Feed line 86 via the diaphragm drive X to feed line - 87 flows. The shutter drive the diaphragm 70 becomes larger in the direction of the diaphragm opening adjust »- with the onset of the current flow through the feed lines 86 and 87, the transistor 101 in 8 is conductive and thus also controls transistor 98 through. When the transistor becomes conductive 90 and the onset of the current flow in the feed lines 86 and 87 of the diaphragm drive X lies a negative pulse appears at the collector terminal 69 of the transistor 90 in FIG. The negative flank des'Impulses causes the transistor 107 to be turned on via the capacitor 100 in FIG and the application of a negative voltage to the control grid of the via the conductive transistor 98 Thyristor 95. When the transistor is turned on, the anode-cathode., Track of the thyristor

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short-circuited, and under the influence of the negative control grid voltage, the thyristor extinguishes. This means that the LED 93 and the display go out "Time setting too short" disappears.

The diaphragm drive X will adjust the diaphragm 70 as a result of the selected exposure time that is too short up to the diaphragm opening. Here - "- läuj ^ fe ^ the diaphragm 70 against a. Stop and - ^ prevents further adjustment ^ Da_j / eJj ^ r ^^
75 the tension _am.

is more tive than the nominal voltage at the inverted 'input, a positive voltage will continue to be attached to the Bas'i.s __; de.s transistor 83, and the transistor: 83 remains conductive. Hence flow through a current from line Z through the transistor " the feed line 86, the diaphragm drive X, "the Feed line 87 to potential line 79 · This means that transistors 101 and 89 remain in Fig. 8 conductive. The transistor 107 has meanwhile blocked because after reaching the pulse height of the am Terminal 69 pending pulse the. Control is omitted .; On the anode-cathode route of the The operating voltage is thus in turn applied to the thyristor 95 ' -5 volts switched. If now the Control of the transistor 90 via the .Control line 7 or 23 aborted, the potential 69 at the collector of transistor 90 jumps from zero

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positive potential, and this positive voltage edge generated across capacitor 100 and across the still conductive transistor 98 a positive pulse at the gate of the thyristor 95, so that this ignites and the light emitting diode 93 turns on. The "Time setting too short" indicator lights up.

If the time setting is too long, the current direction in the supply lines 87 and 86 will be reversed accordingly, so that the transistor 105 and the transistor 99 will be conductive and thus "when a negative pulse occurs at the collector terminal 69 of the transistor 90 the thyristor 96 will be activated and the LED 3k switched on. The "Time setting too long" indicator lights up.

The display device VII worked the same Way in the switching arrangement of Fig. 2, where built in place of the automatic shutter IV an automatic timer IX is. When the display lights up, the diaphragm adjuster must be used instead of the time adjuster VII IX. Corresponding to the display "Time setting too long" appears the display "Aperture setting too small "and vice versa. the display" aperture setting too large ".

In Fig. 9 the circuit diagram of the locking control device XII is shown, via which the locking device

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drove XIII towards or towards Become kanil ·. The structure and mode of operation of the shutter drive is in the German Pateiitarirameldung ■ P 20 31- 565 (A 823) already described in detail. The lock drive consists essentially of a pot magnet, one of which is coaxial with the pot core movable solenoid has «The solenoid is mechanical with the sector drive rings or directly connected to the sealing sectors and receives its excitation current via the lines 110 and TU in Fig. 9 from the shutter control device XII. This is completely symmetrical and consists of a transistor 112 resp. 112 ', the base of which via the control line 14 to the Closing the shutter or via the control line · 22 to open the shutter; controlled will. The collector of the transistor 112 or 112 "'is connected to the base of a further transistor 113 or 113 'connected, which in turn have a Resistor 114 or 114 'connected to the output Y. the power supply device VII connected Power line 115 is connected. The basis of the Transistors 112 and 112 'are across a resistor 116 or HG 'connected to zero potential, see above that the transistor without control by, the lines 14 and 22 blocks constantly. Via the Imitter-Kollektor-Streeke of the pnp transistor 113 or 113 'is the base of an npn transistor 11? or 117 ' connected to power line 115 * The collector

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this transistor is connected to the power line 115, while the emitter is at zero potential via the collector-emitter path of a further npn transistor 118 or 118 ". The base of the transistor 118 or 118 'is connected to the center tap of one of the resistors 119 and 120 or 119 'and 120' existing voltage divider circuit connected between the collector of the symmetrical transistor 118 'or 118 and the _: zero potential The transistor 118) is the current line 110 and the current line 111 of the closure actuator XIII is connected to the emitter of the transistor 117 '(or the collector of the transistor 118').

The mode of operation of this arrangement is as follows: If a positive pulse appears on control line 14 for closing the shutter, transistor 112 becomes conductive, as does transistor 113. The base of transistor 117 is thus connected to power line 115, so that this transistor too becomes conductive. A current thus flows from the power line 115 via the collector-emitter path of the transistor 117 and the voltage divider circuit 119 ^! and 120 'to zero potential. A voltage drops across resistor 120 ', so that transistor 118 ^becomes conductive

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from the power line 115 via the collector-emitter path of the transistor 117> the current line 110, the shutter drive XIlI, via the power line 111 and the collector-emitter path of the transistor 118 'to zero potential ._ As a result of the current flow in the im Magnetic field located solenoid adjusts this in the direction of the breech block.

When a positive signal appears in the control line for shutter release 22, the transistor 112 ', 113', 117 'and 118 conductive. In order to A current vpn of the power line 115 flows via the collector-emitter path of the transistor 117 ', the power line 111, the lock drive XIII, the power line 110, the collector-emitter path des transistor 118 to zero potential. the The direction of current in the solenoid is reversed, and the shutter opens.

The logic circuit diagram according to Fig. 3 and 4- of the electronically controlled photographic camera, which includes the step switch I and the control and program part II, is expediently explained on the basis of the function of the camera VI are as described above via the setting

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leitungeii 32, 33 and 34 the resistors 73 in the Automatic diaphragm setting IV (FIG. 7) and 66 of the timing generator HIc (FIG. 6) are set. When the trigger XVI is actuated, the contact 39 in FIG. 5 is closed, and at the outputs S and Z of the power supply device VII is, as described above, the operating voltage of 10 volts or 5 volts. The closing pulse causes Via the capacitor 51 »that the input of the NOR element 130 connected to the control line 12 the value of logic 1 (hereinafter referred to as "1") assumes. As can be seen from Fig. 10, the output of the NOR element 130 takes the value regardless of the value of the other input logic zero (hereinafter referred to as "O"). This means that the associated with this output have Inputs of AND gates 131 and 132 have the value "0" and, as off. Fig. 10 can be seen, takes the output of this AND element has the value "0" regardless of the value of the other input at. This means that the clear or reset zero inputs of counters A, B, C and D are valued "0", and the step switch is set to its starting position, in which the output zero of the step switch I has the value "0", while the remaining outputs one to fifteen have the value "1". Receives via the inverter 133 the control line 10 on compared to the zero potential

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positive potential, so that the transistor 91 in FIG. 7 becomes conductive, in turn causes the transistor 84 ″ to be turned on, whereby from> the potentiälleitung 79 a current via the 'feed line 87 through the diaphragm drive X, the feed line 86 and the transistor 64. to zero potential flows so that the diaphragm drive the diaphragm 70 in the manner described for Fig. 7 ", closes. The closed aperture covers the lens in a light-tight manner. ■ '■

With the appearance of a voltage at the output Z of the power supply device VII of the control pulse generator purple is turned on and generates, in the manner described for Figure 6, by example, approximately 10 ms a pulse via the control ^line. Conductively 25 the thyristor 60 in FIG. 6. 'can be. The control line 18 is thus switched on. . Zero potential is applied, - and a positive pulse appears at the "clock input of the step switch" via the inverter 134, which causes the step switch to be set to step one,; assumes, while all other outputs have the valency "1." Thus, via the inverter 135, a potential which is positive compared to the potential line 79 in FIG. 7 appears in the control line 9 for clamping the "interference light level"

5 0 98 2 0/09 A 4 " ³⁰ "

and transistor 92 becomes conductive. In the manner described for FIG. 7 ", the capacitor 74 is charged in accordance with the interference light prevailing when the shutter 70 is closed. After a further 10 ms, the step switch is set to step two by the control pulse generator HIa, in which the output two of the step switch has the value" O The control line 7 receives a positive potential via the inverter 136 and the thyristor 90 in FIG. 7 controls, whereby the transistor 88 is blocked and the automatic aperture setting is activated 7 is controlled for pre-adjustment, for the aperture setting is not sufficient, when the step switch is switched to step three via the inverter 137, the control line 23 for the adjustment is activated, whereby the transistor 90 becomes conductive again and the aperture setting process can be continued .

After a further 10 ms, the step switch is set to step "Four" , so that output four of the step switch has the value "O", while all other outputs have the value "1." The input connected to output four of the step switch takes the NAND gate 138 has the value "0" and ό> r with the output eight

509820/0944 ~ ³¹ ~

■ -. 31. ~: '. ■ / ■■ /: ■;.

of the step switch connected input of the NAND gate 138 indicates the value "1". As can be seen from Fig. 10, the output of the NAND gate 138 the value "1". Via the control line 14 for. closing the shutter a positive pulse is thus applied to transistor 112 in FIG. 9 so that. this steers through and the shutter control device XII in the manner described for FIG. 9 the shutter XIII in FIG Controls the closing direction of the shutter.

After a further 10 ms, the step switch is switched to step five by the control pulse generator 11Ia. is set, whereby the output five of the step switch assumes the value "0". In this state, the mirror of the reflex camera is in the viewfinder position, so that the scanning switch 36 for the mirror position: is open. Likewise, the auxiliary shutter is still in its position covering the picture window, the scanning switch 29 being closed for the auxiliary shutter position. The actual value input lines 3 and 4 leading from the sampling switches 36 and 29 to the control and program part II thus have positive or negative potential. Thus, taking into account the inverter 140 ", the inputs of the NOR element 139 take on the value" 0 ", so that the output has the value" 1 "

509820/0944 ^ ₂ -

ι a

ι 1 f

ι 111 ■

Mirror magnet release XIV controlled so that, as in German patent application P 23 50 733 (A 939), the mirror is released and under the action of a tensioned spring in the Swiveling up the pick-up position. At the same time it also pivots under the influence of another drive spring the ^ auxiliary lock in the receiving position. As soon as the mirror leaves the lower layer, the Sensing switch 36 close, and as soon as the auxiliary shutter arrives in its upper position, it opens the sampling switch 29. When the sampling switch closes 36 the actual value input line 4 is connected to zero potential and to the output of the inverter 14O the value "1" appears. The output of the NOR gate 139 thus takes the valence "0" and the activation of the magnetic release via the control line 13 is interrupted. When output five of the step switch is activated, the inputs of the OR element 141 when the sampling switch 29 is closed, the value "Ό" and the output also has the value "0" on. This means that the value “0” and the value are present at the inputs of the AND element 142 "1", because output seven of the step switch has the value "1". With that the exit has of AND gate 142 has the value "0". The value of the output of the NOR gate 144 is "0", since the one with the output nine of the step switch

509820/0944 " ³³ "

The connected input has the value "1". "- .. The output of the - NOR element 145. also has the value" 1 ", since the value" O "is now at both inputs of NOR gates 14.6 and-i47 assume the value "O", since in each case: one of their inputs is connected to an output of the step switch (output twelve or output fourteen) having the value "1" Element 148 has the value "O". _Y The inputs of the AND element 157 have the value "1", since both inputs are again connected to the outputs fourteen and fifteen of the step switch Significance "1" at and the output of the NOR element Ί 58 receives "0". Thus, the output of the OR element 149 receives the valence "0", since both inputs are "0" NOR-G ^ ied 145 the valence ** 1 ", and. the input of the NAND gate 143 connected to it also has the value "1". With the value. ' "O" of the other input, the output assumes the value "1". Lengthened so on Steuerleitüng 19 positive potential to the base of transistor 63 in FIG »6. The transistor controls' by, and the control pulse generator is purple due to the short closing ens d; it capacitor 58; switched off. "" .- '"

509820/0944

If the auxiliary lock has fallen into its upper position, the so-called pick-up position, the switch 29 is opened and the input of the OR element 141 controlled via the actual value input line 3 assumes the value "1". The output thus assumes the value “1”, “the two inputs of the AND element 142 also the value“ 1 ”, thus also its output, and thus the inputs of the NAND element 143 have the value“ 1 ”. D _e r output of the NAND gate 143 takes the value "0", thus the transistor 63 in FIG. 6 is blocked again and the control pulse generator IHa are by charging of the capacitor 58 again a control pulse to the clock input of the step switch I ab, which causes the step switch to be set to step - six , so that output six of the step switch takes on the value "O". A signal 1 thus appears at the output of the inverter 150, which signal controls the transistor 65 in FIG. 6 via the control line 2.1. Thus, as already described, the control pulse generator IHb is switched quickly to compensate for different start-up times of the shutter opening device in the event of battery voltage losses and sets the step switch to SohlItt Sieben in a period of time which, depending on the voltage loss, is more or less below the value of 10 ms. Here the control pulse generator IHa is switched off,

2Q / &? 44 -35-,

so that it cannot provide any additional impulse. When controlling output six of the Step switch is simultaneously via the. Monoflop 35 the control line 22 with a signal occupied so that, as described for FIG. 9, the Shutter control device XII controls the shutter drive XIII in the direction of shutter opening. This happens through ». that the one with the exit ■ Six of the step switch connected input. NAND element 151 of the monoflop35 the valency: "O", thus at the output. Signal "1" occurs this signal is applied via the capacitor 152 to the input of the NAND gate 153 whose the other input has the value "1". The output of the NAND element 153 thus has the value “0” and thus the inputs of the NAND element 154 the valency "Ö" and "1". At the exit of 'des': NAND gate 154 produces a signal that is transmitted via the Control line 22 connects transistor 112 'in FIG. 9. controlled through, whereby, as described, the transistors 113 ',' 117 'and 118 become conductive and a Current flows via the feed line 111 to the feed line 110 through the shutter drive XIII. That Monoflop 35 \ is designed so that it takes about 10 ms after the beginning of the loss control The initial state falls back because the with the capacitor 152 -connected input of the NAND gate 153 assumes the value "0". The output of the NAND gate 153 thus takes the val-

509820/0944 -36-

• ι

14It

speed "1" and the output of the NAND gate 154 the value "O", so that the control of the shutter drive is canceled via the control line 22. However, if the exposure time has ended before this 10 ms has elapsed, the monoflop will be at Control of the output eight of the step switch I is reset to its initial state, namely in that the input of the NAND gate 153 connected to the output eight of the step switch the value. Assumes "0". When the monoflop falls back into its stable position after about 10 ms is to be achieved that the windings of the ■ shutter drive XIII only for a certain, the Windings do not have an excessive time, namely 10 ms, current flowing through them. In addition, through the monoflop a certain independence of the shutter opening control obtained from the position of the step switch. The control of the Closure can thus be maintained for a longer period of time, regardless of the activation of the corresponding output, which causes a swing back the closure is avoided after reaching its open position .. In the event that, for example the shutter opens on step six and the step switch when the open position is reached is switched to step seven, the control would be omitted, and the one with The fastener opening at high speed would definitely be hit by the impact in its closing

509820/0944 -37-

position and are reflected here again in the direction of opening. To avoid this, the step switch would have to control the shutter for a longer period of time _; maintained in the opening direction, which in turn means that the exposure time is called up too late. These disadvantages are avoided with the monoflop circuit. -;

As already mentioned, the control pulse generator IHb switches the step switch to step seven , so that the output seven of the step switch assumes the value "O". The ± o- "cal link elements Τ41, 142, 144 ,. 145 and 143 have thus following value on inputs of the OR-gate 141" 1V (because output Five of the stepping switch, the value "1"), inputs of the AND gate 142, the value "1" (since 'the output of the OR gate 141st "1 ^ir) and" 0 "(because the output of the stepping switch" 0 ") · ^Thus, the output of the aND gate 142 takes the value" 0 ". As already described to Sehaltsehritt Five of the stepping switch, has ^the, output of the" NOR gate 145, the value "1". The inputs of the NAND element 143 thus have the valency "0" and "1" _: and a signal occurs at the output of the NAND element 143; which allows the transistor 63 of the control pulse generator IHa to become conductive via the control line 19.

S09820 / 0944 -38-

O Q C C C "3 Π

So, as already described; the control pulse generator HIa switched off. At the same time, a signal appears at the output of the inverter 154 which switches through the transistor 68 of the timing generator HIc in FIG. 6 via the control line 20, so that the transistor 67 becomes conductive and the timing generator is activated. After the charging time of the capacitor 58, which is determined by the selected exposure time, a positive pulse appears at the output eight of the timing generator IHc which switches the transistor 60 through. Thus, as already described several times, the control line 18 'is connected to zero potential, and a positive signal which reaches the clock input of the step switch I occurs at the output of the inverter 134 and switches the step switch to step eight, see above that now output eight assumes the valency "0", thus the input of the NAND element 138 has the valency "0" and thus a signal arises at the output of the NAND element 138 which is transmitted via the control line 14 to the transistor 112 of the shutter control device XII in Fig. 9 is supplied. The transistor 112 and, accordingly, the transistors 113, 117 and 118 'become conductive in the manner described, and a current flows via the feed line 110 of the shutter drive XIII to the feed line 111. The shutter drive is activated

-39-509820 / 0944

■ - 39 -; "..:; ■ ... ■■

■ 235653O

adjusted in the closing direction. At the same time, as described, it is connected to the output eight of the NAND element 153 of the motto flop. dene input the value "0", so that the 'output of the NAND gate 153 has the value "1". In the event that the exposure time is shorter than 10 ms, the monoflop is still in its unstable state and is reset to its stable starting position by the appearance of a signal at the output of the NAND element 153 via the return line 155, so that the output of the NAND element again assumes the value "0." At the same time, the output of the NAND element 154 also assumes the value "0", so that the activation of the control line 22 for opening the shutter is aborted In step eight, the value of the input of the AND gate 142 connected to the output seven of the step switch changes from "0" to "1" with unchanged valences of the inputs and outputs of the logic gating elements 141, 144, 145, the inputs of the NAND element 143 assume the valency "1", so that the output of the NAND element 143 changes its valency to ^{11 O "} rt. This interrupts the control of the transistor 63 of the control pulse generator IHa and the control pulse generator is switched on again

509820/0944 " ^4o ~

«I> Il <

¹¹ II

After 10 ms, the control pulse generator Ilia sets the step switch to step nine via the control line 18, so that the output nine of the step switch now has the value "0". If the values of the outputs and inputs of the logic gates 141 and 142 are unchanged, the output of the NOR element 144 assumes the value "1" (since switch 36 is closed and the step switch's output nine has the value "0") NOR element 144 a signal with unchanged valence of the logic gates 146, 147, 148, 149, 157, 158 (see. Under step five), the inputs of the NOR element 145 have the value "1", so the output of the takes NOR gate 145 has the value "O", so that the value "1" and "0" is present at the inputs of the NAND gate 143, so that a signal is generated at the output of the NAND gate 143 which is transmitted via the control line .19 , as already described, switches off the control pulse generator. At the same time, a signal arises at the output of the inverter 156 which causes the film transport motor XV to be switched on via the control line 5. Via the mirror gear described in German patent application P 23 50 733 (A 939), the film transport motor causes the auxiliary shutter and the mirror to pivot back at the same time as the film is transported

-41- 509820/0944

ti- I. ■:

'; '"235B530

into its position covering the image window or into the viewfinder. After a slight turn of the film transporting motor "a self-holding circuit wird- closed, as ^r described in the German patent application P Λ (A 945) ,,. So that the motor XV by the step switch as long runs independently of the control until the film to a picture is switched on and the self-holding circuit is mechanically interrupted, as also described itself tet, he. opens. the "contact .36., ..with the ^; When the contact 36 opens, a signal occurs in the control line 4 ', so that the output / of the ¹ NOR element ~ 144 assumes the value "Q'f, since its input has the value" 1 " logic gates 146, 147, 148 and 149, the inputs of the NOR gate 145 have the valency "" -Q - "- and thus a signal is produced at the output of the NOR gate 145. The output of the OR element 141 has the value "1", since its one input is connected to the output four of the step switch I, so the inputs of the AND element 142 have the value "1", which means that the output of the AND gate 142 a signal occurs. With that the inputs take

509820/0944

ge of the NAND gate 143 has the value "1" and no signal appears at the output, so that the transistor 63 of the control pulse generator IHa blocks again and the control pulse generator IHa is switched on again. In summary, when the mirror hits its search position, the control pulse generator IHa is switched on again and after a further 10 ms switches the step switch I to step ten, so that now-. the more the output ten of the step switch assumes the value "0" ~. A signal thus appears at the output of the NAND element 154, since the input connected to the output ten of the step switch has the value “0”. In the manner described, the signal controls the transistor 112 'of the shutter control device XII in FIG. And the shutter is opened.

The control pulse generator IHa now sets the step switch to step eleven , which is not occupied, and after a further "10 ms it goes to step twelve , so that output twelve of the step switch now assumes the value" 0 " Switch 31 for the serial picture circuit is closed, if this is not the case, the control pulse generator HIa sets the step switch to step thirteen after a further 10 ms, so that the output

5Q9820 / 09U

Thirteen of the step switch assumes the value "O" . 159 arises at the output of the inverter a signal which controls the iris controller transistor 82, XIX in Figure 7, and: the diaphragm 70 opens in the very efficient manner. With the mirror in the viewfinder position, the shutter open and the aperture open, the The camera is ready to take pictures again. '

After a further 10 ms the step switch is switched to step fourteen so that this output assumes the value "0". Since the selector switch 31 for the series picture switching is not inserted, there is a positive on the system value input line 1. ves potential, and the input of the ÖR element 16O assumes the value "1". Thus, a signal appears at the output of the OR element 160, and also at the output of the OR element 161, and the inputs of the NOR element 147 thus assume the validity "1" and "0", whereby the output of the NOR element 147 has the valency ¹¹ O "". The output of the AND element 157 has the valency "0" because one of its inputs is connected to the output fourteen of the step switch Element 158 has the value "0", and a signal occurs at the output of the NOR element, which via the control line 6 controls the transistor 50 of the power supply.

509 820/09

• ι ι

ι 1 I I

VII is controlled so that the transistors 47 and 45 in Fig. 5 block and thus the outputs S and Z of the power supply device VIT are de-energized. The process controller and all camera elements are then switched off. Output fifteen of the step switch is no longer activated. This output is only used for safety "when switching off the power supply if a fault occurs in the logic circuit as a result of switching off by step fourteen and switching off has not yet taken place. Setting the step switch to step fifteen causes a control pulse in the control line in the same way 6th

In addition to this program sequence described, in which only the shutter release is pressed, the automatic aperture setting is carried out, the exposure program runs and the aperture is opened again, several variations of this program sequence are possible:
1. Exposure metering

For an exposure measurement, the measuring button XVII is pressed so that the contact 40 in FIG. 5 is closed will. The program runs as described above from step zero to step three, where the aperture setting is finished. A pointer on the diaphragm ring can be used to

509820/0944 - ^ 5-

reading can be made. If there is no diaphragm for the prevailing object luminance, then, as already described, the illumination of the diodes 93 and 94 in FIG. "Time setting is too long". As described, the step switch is set from step three to step four, with output four having the value "O". Since the release XVI is not pressed, the contact is open, so that the signal "1" occurs at the input of the OR-Gliedes.i62, thus the output also the. Valence "1" assumes. Since the output of the OR _r 'i62 member is connected to the input of the NOR gate 163 ·, the .Ausgang of the NOR gate 163 assumes the value "0". The inputs of the OR element 164 thus have the value "0", since they are connected on the one hand to the controlled output four of the step switch and on the other hand to the output of the NOR element 163. The output of the OR element 164 connected to the preset input of the counter D assumes the value "0". This means that the counter D (flip-flop) changes its state from "0" to "1", which means that the decoder, which has the value four as a result of the activation of the output / four of the step switch, a value of eight is added, so that overall the.

5 ^ 9820/09 4.4 '-46-

Step switch jumps from step four to step twelve. The exit now points to twelve the step switch has the value "O". With the measuring button "XVII pressed, ie closed contact 40, the actual value input line 26 is at zero potential. The output of AND gate 165 thus assumes zero potential, since the input connected to the actual value input line 26 is also has the value "0". Thus' the inputs of the NOR gate 146 have the value "0", thus the output "1", thus the output of the OR element 148 also "1", thus also the output of the OR element 149 "1" and thus also the Input of NOR gate 145. As a result, the output of NOR gate 145 and. the associated ■ Input of the NAND gate 143 has the value "0". At the output of the NAND gate 143 a signal is generated which is sent to the control pulse generator via the control line 19 in the manner already described IHa switches off. · This means that the step switch remains on as long as the measuring button is pressed Step twelve stand.

For example, if the time setting VI is adjusted when the message "Time setting too short" is displayed, while the measuring button 26 remains pressed, when the timer is disengaged from the previously set position of the closed

509820 / 09A4

- H-1

O *> t C C O Π

Contact 38 open and '-. When engaging aes. The timer is closed again in the new position setting a different exposure time. The switch 38 is connected to the inverter 166 via the actual value input line 17. This creates a negative signal at the output of the inverter 166, the rising edge of which via the input 42c in the flip-flop 42 has the effect that the output 42a of the flip-flop has the "plus" state of the so-called D input 42b of the flip-flop takes over. The flip-flop is reset. The prerequisite for this is that the flip-flop'42 is in the ready position, i.e. that it is set, in that a signal is pending at its input 42 .d. This is achieved in that when the selector switch ^r : 37 for "release blocking or release XVI is not pressed, the input of the NAND element 174 has the value" 0. The output of the NAND element and thus the one input of the connected to it AND gate 1-75 'take ^ thus the value'"1" - ■ ":. at; When the measuring button is pressed, as already stated, the output of the AND element 165 and the input of the NOR element 146 connected to it have the value "0". If the step switch I is set to step twelve, its output twelve and the input of the NOR element 146 connected to it take the value "O ^ ahv

50982070944

t I I t I I

Output of the NOR gate 146 and the other input of the AND gate 175 connected to it Significance "1", and at the output of the AND element and thus at the input 42 d of the flip-flop 42 a signal. With the resetting of the flip-flop receives the with the output 42 a of the flip-flop 42 connected input of the OR element 167th die Significance "1", so that its output also assumes the significance "1". With that, the exit also has of NOR gate 130 has the value "0", and also the outputs of AND gates 131 and 132 the value "0". This means that the step switch I-is activated via the clear or 'reset zero' inputs Counters A, B, C, D set to step zero, in which according to the scheme described a new exposure measurement takes place with a new setting of the aperture. The time adjuster VI is adjusted in the direction of the arrow that lights up until the display disappears.

Stand by. correct exposure of the step switch to step twelve, as a result of the pressed measuring button XVII, and if the trigger XVI is now also pressed, the Clear or Reset zero input of the counter D of the step switch I via the output of the AND gate 131 the Significance "0", and the reverse process follows as for the control of the counter D via

50 9820/0944 _ ₄₉ _

β ι

I * 1

the OR gate 164 during the assignment of output four of the step switch, namely from the value 12 of the decoder becomes the value Eight of the counter D is deducted, so that a total of the step switch is set to step four will. This is done by "closing." of the switch 39 in. 5 the inputs of the OR element 162 assume the value "O", thus the output has the value "0" ", which means that a positive signal is sent via inverter 1.68 to the input 43 d of the flip-flop 43. The flip-flop 43 -is acted upon by a positive signal via the output of the NOR element in input 43 c, so that it stands ready (The signal 1 at the output of the 'NOR gate 146 arises because both inputs have "0", since the one input with the controlled output twelve of the step switch and the other input with is connected to the output of AND gate 165, and others Input when switch 40 is closed via ■ ■ the actual value input line 26 negative · potential · tial). The rising edge of the signal at the input 43 c of the flip-flop 43 causes, that: the flip-flop flips over, and the non-inverted one The output of the flip-flop assumes the state of the so-called D input 4,3 b, namely "plus". JThe entrance of the NAND gate, 169 is connected to the inverted output 43a of the flip-flop 43

: 509820/0944 -50-

and thus receives the value "0". This creates a signal at the output of the NAND gate. so that the inputs of the AND gate 170 receive the value "1" and likewise its output. There the film transport motor XV is stationary, the contact 41 is open and the actual value input line 28 is due to positive potential. The inputs of the NAND gate 171 thus have the value "t", and the output assumes the value "0". Darmit receives the input of the AND gate 131 the Significance "0", thus its output, which is connected to the clear input of the counter D. Of the Step switch is set to step four, as already explained. Here is the trigger XVI is still pressed, the described exposure process now closes with progression of the step switch I to step five, six, seven, eight, etc., until the process controller after Releasing the measuring button XVII is switched off at step fourteen. ' The exposure takes place with the aperture value originally indicated by the exposure metering process. The measuring button remains inserted, however, the step switch I remains at step twelve, as described above stand. The process described above can be repeated by pressing the trigger again will. ·

-51- 509820/0944

2. Series picture circuit:

If there is a desire to take several pictures one after the other, the selector switch 31 for the series picture switching is to be closed. When considering the mode of operation, three subroutines must be observed: -V- ..,.:, - "---" ■ -2.1. The shutter release button is pressed. The image acquisition process described above takes place here. The step switch runs through all of them Steps from step zero Ms step fourteen and is then automatically reset to step zero, from where it is incremented again. This takes place as long as Ms the trigger XVI is released again. Then the power supply VII is switched off at step fourteen a new exposure measurement and a new aperture setting. The automatic resetting of the step switch from output fourteen to output zero is achieved as follows: When switch 31 is closed, the zero potential is applied to one input of OR element 16O via actual value input line 1 - ' . On ■ other input is due to the non-energized Auslöseblockierungv so as a result of the open switch 37 »About the inverter 16? the value "O". This means that the output of the OR element has the value "0". Since the trigger is pressed, the inputs of the OR gate 162 have the

50 9820/0 9 44 -52-

111 I.

' ι 111 < I.

Significance "0", thus also its output and the .Inputs of the OR element 161 take the valence "0" on. The inputs of the NOR element 147 thus also have the value “0” and thus the output "1". Since the film transport motor is no longer running, the switch 41 is open, and The value lies via the actual value input line 28 "1" at AND gate 172. Since both inputs have the value "1", the Output of AND gate 172 has the value "1". The output of the OR element 167 thus receives the Significance "1" and the output of the NOR gate 130, the output of the AND gate 131 and the The output of the AND element 132 has the value "0", so that, as described above, the clear inputs the counter A-D assume the value "0" and the step switch to its output Zero is reset.

2.2. If the trigger is not activated, only the measuring button XVII is pressed.

The process runs as described under point 1. The step switch runs from step zero to step three and then jumps to step twelve, where he stops, the pulse generator HIa via control line 19 - as under 1 (exposure measurement) described - is switched off. There is only one measurement. Through appropriate

509820/0944

-53-

Adjustment of the time setting VI can, as already stated, the exposure metering and the aperture setting can be repeated. All details are already described under 1. (exposure measurement).

2.3. When the measuring button XVII is pressed, the trigger XVI is printed.

If the output twelve of the step switch I is activated and the trigger.XVI is printed while the measuring button XVII is pressed, the step switch is reset to step four via the preset input of the counter D as soon as the film transport motor XV comes to a standstill With the switch 31 inserted, the output of the OR element 1-60 and thus an input of the OR element Ί61 receives the value "O". If the switch 39 in FIG. 5 is now closed by pressing the trigger XVI, then the value "O" is present via the actual value input si line 27 at the input of the OR element 162 which can be influenced. With ^: valency “O” of the output of the OR element 162, the other input of the OR element 16T has the valency “0” and thus also its output the value of the other input has the value "1". The output of the AND element 1.70 thus has the value "1", since its other input is via NOR-

, 509820/0944 '^

Member 146 also has the value "1". With the film transport motor at a standstill XV and thus open switch 41 both "inputs of the NAND gate 171 have the value" 1 ", thus its output "O" and also the output of the AND gate 131. The preset input of the counter D is assigned the value "0", whereby the step switch I is set to step four. If the shutter release is still pressed here, the step switch runs through all switching levels four, five, six ... to twelve. Is on stage Twelve times the release XVI is already open, the step switch remains and the control pulse generator is switched off Uta stand over control line 19.

If the trigger XVI is still pressed at level twelve, the process described above is repeated until the trigger and measuring button are released. Then the step switch runs via step twelve to step fourteen, where it supplies the power VII. Switches off. In the case of serial picture switching with measuring arm XVII pressed and trigger XVI takes place So the exposure of the individual photographic images with constant exposure time and Aperture.

3 «Switching off the automatic iris.

If desired, can be adjusted by hand.

509820/0944 -56-

To work aperture and time values, the automatic shutter is switched off by closing the "'" selector switch 30. Here, too, a distinction must be made between the three sub-cases mentioned under point 2. . ^: ; - "; ■ ' ^: - ■""" .-

3.1. Only the trigger / is pressed. . When the switch 30 is closed, the -2 "zero potential is applied to the input of the OR element 173 via the actual value input line. When the trigger is actuated, the step switch I is set to step zero in the manner described above, and the shutter closes on the. manually set aperture value, which can be achieved by setting, for example, a stop in the adjustment path of aperture drive X. After 10 ms, it is advanced to step one Significance "0", so that the output of the OR element 173 ^{assumes the valence '1} O " -Input of counter C. As a result, the step switch is immediately set to step four from step one. The activation of step one is very short and only takes about 30 ns. In step four the shutter is closed and the B cancellation program

5098 20/09 4 4 -57- '

runs in the manner described.

3.2. Only the measuring button XVII is pressed. The process initially runs as under 3.1. described from: When the measuring button is pressed, the step switch I is set to step zero, whereby the aperture is closed up to the aperture value set by hand. Then it will be in the manner described above, the step switch to step one and immediately to step four set. In step four, the step switch remains, as in 1 (exposure metering) "is described, only about -30 ns, until it is recognized that the trigger XVI has not been pressed and is not being pressed immediately set to step twelve by counter D, where it remains until the measurement button is released will. This means that the voltage of the control pulse generator IHa on control line 19 is eliminated and the step switch runs through step thirteen to fourteen, where the power supply is VII is switched off. All of the individual functions involved have already been mentioned above described.

3.3 When the measuring button XVII is pressed, trigger XVI is pressed.

When you press the measuring button, as under 3.2. described, the step switch 'on step

509820/0944 -58-

Standing twelve. If the trigger XVI is now pressed, a signal is sent via the actual value input line 27, the OR element 162 and the inverter 168 to the input 43 of the flip-flop 43, so that this, as described under 1 and 2.3, is ■ tilts, the rest of the process runs as there, and the step switch I is reset by the counter D to step four. If the trigger XVI is still pressed at step four, the step switch runs through all switching steps five to twelve, where it is stopped when the measuring button XVII is pressed. The process can be repeated by pressing the trigger XVI again. When the measuring key XVII released - _so: runs to the step switch to step fourteen and switches here - as described initially under · Step Fourteen - come to a standstill Filmtransportmotörs XV via the control line 6 from the power supply VII.

4. Release blocking '': ■ ■ If you want to prevent recordings from being made under unfavorable lighting conditions, to them If an optimal aperture setting is not possible in the camera, then by closing a selector switch 37 for shutter release blocking the. Process in the event of impending misleading after- ·· ' blocked after the aperture setting. Of the

$ 09820/0944 -59-

«Si? '■■ 235653Q

Step switch jumps immediately after step twelve after briefly activating step four and "stops here. The display device XI for incorrectly selected time setting shows this To the photographer that he has to change the time setting or the lighting conditions.

This is done in the following way: When the selector switch 37 is closed, the actual value input line is 16 is connected to the collector of an npn transistor 52 in FIG. Now shows after the aperture setting has been completed In step three of the step switch, the display device XI shows an incorrect signal, so flows a current through the wideband 53 through the light-emitting diodes 93 or 94. The transistor 52 becomes conductive, and the actual value input line 16 is at zero potential. At the output of the inverter 167 arises a signal so that the output of the NOR gate 163 assumes the significance "0". So that has an input of the OR element 164 has the value "0".

If the step switch is set to step four, the one with output four receives the Step switch connected other input of the OR gate 164 has the value "0", so that the The output of the OR element 164 assumes the value "0". This gives the preset input of counter D

509820/0944 -60-

2 3 5 6 5 3 O

the value "O" - and, as already described in detail under 1 (exposure measurement), the step switch is set from step four directly to step twelve. This means that output twelve of the step switch has the value "0". Since switch 37 is closed and switch 40 of the measuring button is open and switch 39 of the trigger is closed, the following logic elements have the following significance: Output 0R ~ element 162 "0"'■_'.' . · ^; Output inverter 168 "--- ¹¹ I" -. Output inverter 16? »1» ■ ■. -'_ ■ ■ 'Output NAND gate 174 "0"
Output AND gate 165! 'O ": -' - /. '": ■ ".

and input of the NOR Gliedes.146 the valence ^ ness "0". A signal appears at the output of the NOR element 146, so that a signal also occurs at the outputs of the OR element 148 and 149. The output of the NOR gate 145 "has the valency" 0 "and so does the input of the NAND gate 143. As a result, a signal is produced at the output of the NAND gate 143 which is sent to the control pulse generator ITIa via the control line 19 switches off in the manner already described .. - '

2 shows essentially the same block circuit arrangement of an electronic process controller for a photographic camera ^; as shown in Fig. 1

509820 / 09A4 , _Λ

61

represents. However, instead of an automatic aperture setting IV, an automatic time setting system is used here V built in. A diaphragm adjuster IX is used in place of the time adjuster VI. the Automatic time setting · measures the object luminance when the aperture is selected and sets it in.

converts an electrical signal that controls a timing generator. The timing generator HIc ■ can therefore be dispensed with in this arrangement, since it is already included in the automatic timing system V. The film speed and the aperture selection are entered into the automatic time setting system V via the actual value input lines 32 'and 33'. Instead of the preselected time, the preselected aperture is fed to the control and program part II via the actual value input line 17 '. The control of the. Aperture control device XIX, which in turn actuates the aperture drive X, takes place exclusively via the step switch I. The automatic exposure can be switched off via the control and program part II ^{via the actual value input line 2 f (selector switch 30) and manual setting is possible.} The structure and the mode of operation of the modified switching arrangement shown in FIG. 2 is otherwise the same as in FIGS 10 described.

509820/0944 -62-

Claims (1)

ROLLEI - ¥ ERKE
Franke & Heidecke A 952. ■: - ■. . .- ■ -. · ■■ ... ■: ■ - '■■. , Claims 1. Electronically controlled photographic camera,.-Labeled through a central electrical -. niche process controller, the one with several outputs provided step switch (I), which can be controlled so that each one output with a "different from" the other outputs electrical signal is verifiable,. 'and the (process controller) a control and program part that is fed back to the step switch (II), in which all "signaling the operating state of the individual" camera elements Actual values are customizable, with the outputs of the step switch directly and / or indirectly via the control and program part with the individual camera elements are connected. 2. Camera according to claim 1, characterized by a control pulse generator (purple), the; 'Controls step switch (I) in this way ; that with each control pulse the next output of the step switch is assigned the electrical "signal. 5 09820/0944 -62- 3. Camera according to claim 1 or 2, characterized in that the step switch (i) inputs has through which its outputs ■ through the. Control and program part (II) in any . Sequence with the electrical signal can be assigned. 4. Camera according to claim 2, characterized in that that the control pulse generator (-11Ia) can be switched on via the control and program part (II) and can be switched off. 5. Camera according to one of claims 1 to 4, characterized by a timing generator (HIc), in which the selectable exposure time can be entered by means of a time adjuster (Vl). ' • 6. Camera according to Claims 4 and 5, characterized in that that the. Time generator - (HIc) when activating a certain output (Seven) of the step switch (I) with simultaneous blocking of the control pulse generator (HIa) can be switched on, and that it corresponds to one of the exposure times set Time the step switch advances by one step. -64- 509820/0944 7. Camera according to one of claims 1 to 6, characterized by an aperture control device - (XIX)., Which ends via an aperture setting © !! automatik: :: (IV). and / or can be actuated via the step switch (I). . . Λ '.' "., 8. Camera nach.Anspruch 7, characterized in that the Blehdeneinstellautomatik (IV) contains a light measuring device (71 »72, 73) and an arrangement · (75, 76, 77, 78) for converting the measured value into an electrical signal , which can be fed directly to the diaphragm control device (XIX). ^: /: \. - 9. Camera according to Claim 7 or 8, characterized in that that the. Diaphragm control device (XIX) from · the series connection, an npn ^ and a php transistor (83, 84) ι consists, whose bases are interconnected, and their emitters via the diaphragm drive X to half - between the collector of the, hpn ^ transistor gate (83) and the collector of the pnp transistor (84) lying voltage is connected. 10. Camera according to claim 7 or 8, characterized in that the Blendeneinstellaütomatlk IV .a device (74, 92) for measuring the 509820 / σ944 ~ ⁶⁵ " closed lens diaphragm (70) on a photo element arranged behind the lens diaphragm (71) of the light measuring device impinging Contains interfering light. . 11. Camera according to claim 8, characterized in that the selected film speed and exposure time can be entered directly into the light measuring device (73). 12. Camera according to one of claims 1 to 4, characterized by an automatic time setting system (V), • which, taking into account the film speed and aperture values that can be entered directly, and the prevailing object luminance, determines the exposure time, which can be called up by the step switch (i) ^{via a control line (8!).} '. 13 · Camera according to claim 12, characterized in that the diaphragm control device (XIX) is directly can be actuated by the step switch (I). 14. Camera according to one of claims 1 to 13, characterized in that with actuation of the Trigger (XVI) or the measuring button (XVII) the power supply device (VII) of the camera can be switched on. 509820/0944 ~ ⁶⁶ ' 15. Camera according to one of claims 1 to 14, characterized characterized that with the termination of the respectively selected program sequence a photographic Recording the power supply device (VII) of the camera via the control and program part (II) can be switched off. . · " 16. Camera according to one of claims 1 to 15, characterized by a second, with the locking control device (XII) control pulse generator connected to a ■ common voltage source (ITIb), which in the case of requests made via control and program part (II) control of the lock control device to open the; lock by the crotch scarf ' ter. (i) can be switched on, and that in turn advances the step switch by one step. . ■ 17. Camera according to claim ■ 16, characterized in that the first control pulse generator (purple) can be switched off on the stepped step. - ■■■ -. '■ ".- · 18. Camera according to claim 16, characterized in that that the period of time from switching on the control pulse generator (Illb) to. Submission of the.! first control pulse corresponds to the time that 509820/0944 is required to transfer the closure from the closed to the open position. 19. Camera according to claim i6 / {characterized in that that every possible pulse train of the second control pulse generator (HIt)) is smaller than that Pulse train of the first control pulse generator (UIa). . ■ 20. Camera according to one of claims 1 to 19, characterized by a monoflop which, in its metastable state, controls the shutter control device (XII) to open the shutter (35), which can be activated via the step switch (I) before the exposure time is called up. ■ 21. A camera according to claim 20, characterized in that the monoflop (35) · after the exposure time has been called up with activation of the shutter control device (XII) for closing the shutter can be reset to its stable state via the step switch (I). 22. Camera according to one of the preceding claims, characterized by a display device (XI) which, after pressing the measuring button (XVII) or the trigger (XVI), signals insufficient exposure values to the operator. 509820/0944 -68- 23. Camera according to one of the preceding claims, characterized in that1 by pressing the ■ Measuring button (XVIl) the step switch (T) of. its starting position (Hull) stepwise Ms to terminate the aperture setting and in a further switching stage. (Twelve) can be stoppedV. 24. Camera according to claim 23, characterized in that the step switch (I) by means of the Control and program part (II) via the preset input one of his counters (D) when his with the! shutter control device is activated (XIl) connected to close the shutter Output (four) can be set directly to the • further switching stage higher count (twelve), in which the first control pulse generator (purple) via the control and program part can be switched off. ; " 25-Kamsrä according to claim 23 or 24, characterized in that the step switch (I) stopped on the further switching stage (twelve) _: by means of the control and program part (II) via the clear inputs of its counters (A, B, C - D) can be reset to its initial position (zero) as soon as the time adjuster (Vl) or the diaphragm adjuster (TX) is adjusted. ■ 50 98 207 03 A4 -69- 26. Camera according to claim 24 and 25, characterized in that the control and program part (II) a flip-flop (42) which, with control of said switching stage (twelve) of the step switch (I) is set (set) via logical connection elements (174, 175, 146) and by a "when adjusting the time resp. Aperture adjuster (VI or IX) generated pulse can be reset (reset), its non-inverted output (42 a) via logic logic elements (167, 130, 131, 132) the clear inputs of the counters (A, B, C, D) of the Step switch controls. 27. Camera according to one of the preceding claims, characterized in that when the measuring button (XVII) is pressed, the trigger is actuated (XVI) triggers an exposure process with the aperture or exposure time values determined in the measurement process. 28. Camera according to one of claims 23 to 26 and claim 27, characterized in that the step switch (I) stopped on the next switching stage (twelve) by pressing the Trigger (XVl) on the shutter control device (XII) for closing the shutter switching step (four) can be reset. 509820/09 4 4 _ ₇₀ _ 29. Camera according to claim 28, characterized in that that the control and program part (IX) a another flip-flop; (43) contains ,, that with An. control of said switching stage (twelve). -. of the step switch (Γ) via logical ver. linking elements (146, 165) is set (seted) and can be reset by a pulse generated when the trigger (XVl) is actuated is, being its inverted output. (43 a) via logical linking elements. (169, 170, 171, 131) the clear input of a ' the counter (D) of the step switch controls. 30. Camera according to one of the preceding claims, characterized in that with the insertion of a selector switch (31) for series connection. . ;; a continuous repetition of the program sequence of an image recording takes place as long as the trigger is activated is actuated. . . . ··. "" " 31. Camera according to claim 30, characterized in that that the step switch (I) via the * ■ Clear inputs of its counters (A, B, C, D) in its starting position can be reset. 32. Camera according to one of the preceding claims, characterized in that with insertion of a .509820 / 0944 -71- Selector switch (31) for serial picture switching 'a continuous repetition of the program sequence a picture is taken while maintaining the aperture and exposure values set at the beginning, as long as .trigger (XVl) and Measuring button (XVIl) are pressed. 33. Camera according to claim 32, characterized in that the step switch (I) according to Still- ' position of the film transport motor (XV) by means of the control and program part (II) via the clear input one of its counters (D) to the shutter control device (XII) for closing of the shutter switching-on step (four) can be reset. , 34. Camera according to claim 33, characterized in that that with the selector switch (31) inserted for series image switching, with the measuring button pressed (XVII) and the shutter button pressed (XVI) the logical linking elements (1 ^ 6, 165, 16O, " 161, 162, 169, 170, 171, 131) of the control and program part (II) are switched in such a way that that with setting of the step switch (I) of its switching stage causing the shutter opening (Ten) to the next switching stage (twelve) the control pulse generator (IHa) is switched off when the film transport motor (XV) is running, 50-9820 / 0944 " ⁷² ~ and the clear input of one: the counter; (D) " of the step switch is activated if the filin transport motor has stopped. ; - 35. A camera according to one of the preceding claims, characterized in that with the insertion of a further switch dial (30) or the aperture .. Zeiteinstellautomatik (IV-b, zw> ---- ^"," Sr) ^"::: at ) _schaltba.r;; and aperture or shutter speed manually adjusted is · .. ,, ■;:. / 36. Camera according to claim 35.,; characterized in that the step switches (I) over the; ' Preset input of a counter (C) immediately to the shutter control device. (XII) 'to. Closing the shutter switchable step (four) can be set as soon as it is connected to the shutter control device .. (XIX) for closing the shutter; Output (one) is assigned a signal. - _:. '; ■ .-. ·.'"■':" - "- -..; - - 37 '. Camera according to one of the preceding claims, characterized in that with insertion of a selector switch (37); for release blocking of the Program sequence in the event of a threat of incorrect exposure after the end of the control of the automatic aperture setting (IV) is canceled. .--. '"■" ■:.: ^V ' ■ - ■ "'"■'. · - - ■■ ': ■ -'"-'.- I ■ '"' ■ '"-7: 3 - ■. ■■ -.; 50 9 820/09 44 C C O Π 38. Camera according to claim 37, characterized in that that the step switch (I) when it is controlled with the shutter control device (XII) to close the shutter connected output (four) by means of the control and program part (il) via the preset input one of its counters (D) can be set directly to a further switching stage (twelve) in which it is switched off when the first control pulse generator (purple) is switched off by the control and program part (II) can be stopped. 39. · Camera according to claim 37, characterized in that by adjusting the time adjuster (VI) or the aperture adjuster (IX) to time or aperture values sufficient for the exposure "with the selector switch (37) inserted Trigger paint can be canceled. · 40. A camera according to claim 37 or claim 38, characterized in that the control signal for triggering dia-blocking from the display device (Xl) ^ö for incorrectly chosen exposure time or is derivable for incorrectly selected aperture. 509820/0944 Blank page