US3842587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controlled photographic camera
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1974-02-13
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Granted: 1974-10-22
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Expires: 1994-02-13
Abstract
Abstract A still camera in which the various functions are controlled electrically rather than mechanically. A step-by-step switch is connected to a pulse generator in such manner that each pulse advances the step-by-step switch through one step. Each step position of the switch controls one function of the camera, such as, for example (in the case of a single lens mirror reflex camera) the respective functions of swinging the mirror to viewing position, opening the diaphragm for viewing, determining a proper diaphragm setting according to the prevailing light conditions, compensating for stray light, closing the shutter, swinging the shutter from viewing position to picture taking position, opening the shutter for starting the actual exposure, closing the shutter when the exposure is completed, transporting the film, etc. When a series of pictures is to be taken in rapid succession at the same diaphragm setting and shutter speed setting, provision is made for by-passing some of the steps, to save the time that would be required for performing functions which are unnecessary when a rapid sequence of ''''serial'''' pictures are to be taken.
Inventors
- 👤 K Strauss
- 👤 W Koller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/091; G03B7/097
Claims Analysis
Total Claims: 67
Claim 1
Independent Claim
164 words
A photographic camera with electronic control means, comprising a central electronic process controller having: a. a step-by-step switch having a series of different step positions and a series of output connections corresponding to the respective step positions; b. means for providing an electric signal to an output connection corresponding to a given step position different from an electric signal then provided to output connections corresponding to other step positions; c. a control and program part; d. a pluralIty of individual camera elements including a shutter movable between closed and open positions, a diaphragm movable to various aperture positions, and operating means for said shutter and said diaphragm; e. means for introducing instantaneous values indicating operating conditions of various individual camera elements into said control and program part; f. feed-back means for feeding values from said control and program part into said step-by-step switch; and g. means for feeding electric signals from the respective output connections of said step-by-step switch to said individual camera elements.
Claim 2
Dependent Claim
164 words
A photographic camera with electronic control means, comprising a central electronic process controller having: a. a step-by-step switch having a series of different step positions and a series of output connections corresponding to the respective step positions; b. means for providing an electric signal to an output connection corresponding to a given step position different from an electric signal then provided to output connections corresponding to other step positions; c. a control and program part; d. a pluralIty of individual camera elements including a shutter movable between closed and open positions, a diaphragm movable to various aperture positions, and operating means for said shutter and said diaphragm; e. means for introducing instantaneous values indicating operating conditions of various individual camera elements into said control and program part; f. feed-back means for feeding values from said control and program part into said step-by-step switch; and g. means for feeding electric signals from the respective output connections of said step-by-step switch to said individual camera elements.
Claim 3
Dependent Claim
42 words
A camera according to claim 1, characterized by a control-pulse generator (IIIa) which actuates said step-by-step switch (I) in such a manner that with each control pulse, said different signal is provided to the next following output connection of the step-by-step switch.
Claim 4
Dependent Claim
81 words
A camera according to claim 2, characterized by a second control-pulse generator (IIIb), a shutter control device (XIX), means connecting said second generator and said shutter control device to a common source of voltage, and means for rendering said connecting means effective by operation of said step-by-step switch (I) upon actuation of the shutter-control device effected via the control and program part (II) in order to open the shutter and which in its turn advances the step-by-step switch by one step.
Claim 5
Dependent Claim
26 words
A camera according to claim 3, characterized by means for disconnecting said first control-pulse generator (IIIa) on the switch step to which it has been advanced.
Claim 6
Dependent Claim
51 words
A camera according to claim 3, characterized by the fact that the time interval from the connecting of the control-pulse generator (IIIb) until the giving off of the first control pulse corresponds to the time which is necessary for the shutter to pass from a closed position into an open position.
Claim 7
Dependent Claim
35 words
A camera according to claim 3, characterized by the fact that every possible train of pulses from the second control-pulse generator (IIIb) is smaller than the train of pulses from the first control-pulse generator (IIIa).
Claim 8
Dependent Claim
29 words
A camera according to claim 2, characterized by the fact that the control-pulse generator (IIIa) can be connected and disconnected as desired through the control and program part (II).
Claim 9
Dependent Claim
41 words
A camera according to claim 1, characterized by the fact that the step-by-step switch (I) has inputs through which its output connections can be provided with said different electric signal by said control and program part (II) in any desired sequence.
Claim 10
Dependent Claim
34 words
A camera according to claim 1, characterized by a time setting device (VI), and a time-forming generator (IIIc) into which a selectable exposure time can be introduced by means of said time-setting device (VI).
Claim 11
Dependent Claim
63 words
A camera according to claim 9, characterized by means for activating said time-forming generator (IIIc) by an output signal from a given output step (seven) of said step-by-step switch (I), and means for producing simultaneous blocking of the control pulse generator (IIa), and means for advancing said step-by-step switch by one step after a period of time corresponding to the exposure time set.
Claim 12
Dependent Claim
40 words
A camera according to claim 1, characterized by a diaphragm control device (XIX), an automatic diaphragm setting mechanism (IV), and means for actuating said diphragm control device either by said automatic diaphragm setting mechanism or by said step-by-step switch (I).
Claim 13
Dependent Claim
52 words
A camera according to claim 11, characterized by the fact that the automatic diaphragm-setting mechanism (IV) contains a light-measuring device (71, 72, 73) and an arrangement (75, 76, 77, 78) for converting the measured value into an electric signal, and means for feeding such signal directly to the diaphragm control device (XIX).
Claim 14
Dependent Claim
30 words
A camera according to claim 12, characterized by the fact that a film speed setting and a selected exposure time settiNg can be introduced directly into said light-measuring device (73).
Claim 15
Dependent Claim
68 words
A camera according to claim 11, characterized by the fact that said diaphragm control device (XIX) comprises an NPN transistor and a PNP transistor (83, 84) connected in series with each other, their bases being connected together and their emitters being connected via a diaphragm drive (X) to half the voltage present between the collector of the NPN transistor (83) and the collector of the PNP transistor (84).
Claim 16
Dependent Claim
49 words
A camera according to claim 11, characterized by the fact that said automatic diaphragm setting mechanism (IV) contains means (74, 92) for measuring the stray light which impinges, with the lens diaphragm (70) closed, on a photoelement (71) of the light-measuring device which is arranged behind the lens diaphragm.
Claim 17
Dependent Claim
25 words
A camera according to claim 11 characterized by the fact that said diaphragm control device (XIX) can be actuated directly from the step-by-step switch (I).
Claim 18
Dependent Claim
53 words
A camera according to claim 1, characterized by an automatic shutter speed time-setting mechanism (V) responsive to settings of film-speed and diaphragm aperture and responsive to the brightness of the object to be photographed, for determining the exposure time which can be obtained via a control line (8'') from the step-by-step switch (I).
Claim 19
Dependent Claim
45 words
A camera according to claim 1, characterized by a camera release (XVI), a measurement button (XVII), a power supply device (VII), and means for operatively connecting said power supply to said control and program part upon actuation of either said release or said measurement button.
Claim 20
Dependent Claim
51 words
A camera according to claim 1, characterized by means for selecting a program for a given photographic exposure a power supply device (VII), and means effective upon the completion of the course of the program selected and effective through said control and program part (II) for disconnecting said power supply device.
Claim 21
Dependent Claim
57 words
A camera according to claim 1, characterized by a shutter control device (XII), means for calling up an exposure time, and a monoflop (35) which in its metastable condition causes the shutter-control device (XII) to open the shutter, said monoflop being adapted to be activated via the step-by-step switch (I) before the calling-up of the exposure time.
Claim 22
Dependent Claim
46 words
A camera according to claim 20, characterized by the fact that said monoflop (35) after the calling-up of the exposure time can be returned into its stable condition with actuation of the shutter-control device (XII) for the closing of the shutter via the step-by-step switch (I).
Claim 23
Dependent Claim
46 words
A camera according to claim 1, further comprising a measurement button (XVII), a release (XVI), and an indicating device (XI) which, after the pressing of said measurement button (XVII) or said release (XVI), signals the fact to the operator that the exposure values are not sufficient.
Claim 24
Dependent Claim
56 words
A camera according to claim 1, characterized by a depressable measurement button (XVII), and means responsive to depression of the measurement button for advancing said step-by-step switch (I) from its starting position (zero) step by step until the completion of the setting of the diaphragm and for stopping said switch in a further switch step (twelve).
Claim 25
Dependent Claim
102 words
A camera according to claim 23, wherein said step-by-step switch includes a counter (D), said camera further comprising a shutter control device (XII), and a first control pulse generator (IIIa), and means for setting said step-by-step switch (I) directly on a further switch step of higher number (twelve) by means of said control and program part (II) via a preset input of said counter (D) upon actuation of its output (four) connected with said shutter-control device (XII) for the closing of the shutter, in which high switch step the first control-pulse generator (IIIa) can be disconnected via the control and program part.
Claim 26
Dependent Claim
53 words
A camera according to claim 24, further comprising a relEase (XII), characterized by means responsive to actuation of said release for setting said step-by-step switch (I), when it has stopped on the further switch step (twelve), back to the step (four) which connects the shutter-control device (XII) for the closing of the shutter.
Claim 27
Dependent Claim
84 words
A camera according to claim 25, characterized by the fact that the control and program part (II) contains an additional flip-flop (43) which, upon actuation of the said switch step (twelve) of the step-by-step switch (I), is set via logical decision elements (146, 165) and can be reset by a pulse produced upon actuation of the release (XVI), its inverted output (rea), via logical decision elements (169, 170, 171, 131), actuating the clear input of one of the counters (D) of the step-by-step switch.
Claim 28
Dependent Claim
85 words
A camera according to claim 23, wherein said step-by-step switch includes a plurality of counters (A, B, C, D), said camera further comprising an exposure factor setting device (VI or IX), characterized by means for resetting said step-by-step switch (I) from a higher switch step (twelve) to its starting position (zero) by means of said control and program part (II) via the clear inputs of its said counters (A, B, C, D) as soon as said exposure factor setting device (VI or IX) is displaced.
Claim 29
Dependent Claim
95 words
A camera according to claim 27, characterized by the fact that the control and program part (II) has a flip-flop (42) which is set by a signal from an output at said switch step (twelve) of the step-by-step switch (I) via logical decision elements (174, 175, 146), and means for resetting said flip-flop by a pulse produced upon displacement of said exposure factor setting device (VI or IX) its non-inverted output (42a) actuating via logical decisison elements (167, 130, 131, 132) the clear inputs of the counters (A, B, C. D) of the step-by-step switch.
Claim 30
Dependent Claim
66 words
A camera according to claim 1, further comprising a depressable measurement button (XVII), a release (XVI), means activated by depression of said button for measuring an exposure factor in accordance with prevailing light conditions, and means effective upon actuation of said release while said measurement button is depressed for performing an exposure process with the exposure factor set to the value determined in the measurement process.
Claim 31
Dependent Claim
53 words
A camera according to claim 1, further comprising a selector switch (31) for serial-picture switching, a release (XII), and means responsive to actuation of both said selector switch and said release for producing a continuous repetition of the course of program for the taking of pictures as long as the release is actuated.
Claim 32
Dependent Claim
64 words
A camera according to claim 30, wherein said camera includes a film transport motor (XV) and said step-by-step switch (I) includes a plurality of counters (A, B, C, D), characterized by the fact that the step-by-step switch (I), after the stopping of the film-transport motor (XV), can be reset into its starting position via the clear inputs of its counters (A, B, C, D).
Claim 33
Dependent Claim
56 words
A camera according to claim 30, characterized by the fact that the continuous repetition of the course of the program of the taking of pictures, with said selector switch (31) operative, takes place without change of the initially determined diaphragm and exposure values as long as said release (XVI) and said measurement button (XVII) remain actuated.
Claim 34
Dependent Claim
88 words
A camera according to claim 32, further comprising a film transport motor (SV) which may be started and stopped, a shutter control device (XIII) for closing a shutter, a plurality of counters for said step-by-step switch, and means for resetting said step-by-step switch (I), after the stopping of said film-transport motor (XV), by means of said control and program part (II) via a clear input of one of said counters (D) to a switch step (four) which activates said shutter-control device (XII) for the closing of the shutter.
Claim 35
Dependent Claim
141 words
A camera according to claim 33, further compRising a depressable measurement button (XVII), a film transport motor (XV) which may be started and stopped, and a control pulse generator (IIIa) characterized by the fact that with the selector switch (31) for serial-picture switching connected, with the measurement button (XVII) depressed, and with the release (XVI) depressed, the logical decision elements (146, 165, 160, 161, 162, 169, 170, 171, 131) of the control and program part (II) are so connected that with the setting of the step-by-step switch (I) from its switch step (ten) which effects the opening of the shutter to the next switch step (twelve), the control-pulse generator (IIIa) is disconnected when the film-transport motor (XV) is operating and the clear input of one of the counters (D) of the step-by-step switch is actuated when the film-transport motor is stopped.
Claim 36
Dependent Claim
44 words
A camera according to claim 1, further comprising a selector switch (30), automatic exposure factor setting mechanism (IV or V), and means responsive to said selector switch (30) for disconnecting said automatic setting mechanism so that an exposure factor can be set by hand.
Claim 37
Dependent Claim
126 words
A camera according to claim 35, further comprising a plurality of counters associated with said step-by-step switch, a shutter control device (XII) for closing a shutter, a diaphragm control device (XIX) for closing a diaphragm, an output connection from a step (one) of said step-by-step switch to said diaphragm control device, and output connection from another step (four) of said step-by-step switch to said shutter control device, and means response to a preset input of one of said counters (C) for setting said step-by-step switch immediately on the step (four) which connects the shutter-control device (XII) for the closing of the shutter, as soon as its output (one) which is connected with the diaphragm-control device (XIX) for the closing of the diaphragm has received a signal.
Claim 38
Dependent Claim
53 words
A camera according to claim 1, further comprising a selector switch (37) for release-locking, an automatic diaphragm setting mechanism (IV), and means responsive to said selector switch for interrupting the course of an exposure program, in case of threatened incorrect exposure, after the termination of actuation of said automatic diaphragm setting mechanism (IV).
Claim 39
Dependent Claim
101 words
A camera according to claim 37, further comprising a shutter control device (XII) for closing of a shutter, an output connection from a step (four) of said step-by-step switch to said shutter control device, a plurality of counters (A, B, C, D) associated with said step-by-step switch, a first control-pulse generator (IIIa), and means responsive to a preset input of one of said counters (D) when said step-by-step switch is on that one of its steps (four) connected to said shutter control device for advancing said step-by-step switch directly to another switch step (twelve) effective to disconnect said first pulse generator.
Claim 40
Dependent Claim
27 words
A camera according to claim 37, further comprising means responsive to resetting an exposure factor to a value sufficient for the exposure, for rendering the release-locking ineffective.
Claim 41
Dependent Claim
32 words
A camera according to claim 37, further comprising an indicating device (XI) for indicating an improper selected exposure factor, and means deriving a control signal for release locking from said indicating device.
Claim 42
Dependent Claim
100 words
A camera according to claim 1, further comprising switch means for interrupting the course of a picture taking program other wise controlled by said control and program part at a point in such program after the closing of said shutter to terminate an individual exposure, an additional controller, and means for operatively connecting said additional controller to said control and program part, said additional controller when operatively connected serving to effect a determinable number of repetitions of the film exposure cycle without change in the exposure values of shutter speed and diaphragm aperture as initially set before The first exposure.
Claim 43
Dependent Claim
33 words
A camera according to claim 41, wherein said additional controller has means for eliminating the interruption of the course of the program after a predeterminable number of repetitions of the film exposure cycle.
Claim 44
Dependent Claim
30 words
A camera according to claim 41, wherein said additional controller, after interruption of the course of the program of the taking of a picture, is actuated via the step-by-step switch.
Claim 45
Dependent Claim
58 words
A camera according to claim 43, further including a film transport motor (XV or 201), an output connection (5) from one of the steps (nine) of said step-by-step switch to said motor, and means including said switch means for connecting said additional controller to said output connection (5) which connects the step-by-step switch with said film transport motor.
Claim 46
Dependent Claim
23 words
A camera according to claim 43, further comprising means responsive to said additional controller for resetting said step-by-step switch to a program-commencement position.
Claim 47
Dependent Claim
36 words
A camera according to claim 45, further comprising a ''''master-clear'''' input for said control and program part, and means connecting an output of the additional controller with the ''''master-clear'''' input of said control and program part.
Claim 48
Dependent Claim
36 words
A camera according to claim 41, further including means for preselecting a ''''multi-exposure'''' program, and means for rendering effective said switch means for interrupting the course of a program when said ''''multi-exposure'''' program has been preselected.
Claim 49
Dependent Claim
53 words
A camera according to claim 41, characterized by the fact that said additonal controller has a pulse generator (400) operable during actuation by the step-by-step switch, and a pulse counter (500) provided with a plurality of outputs successively actuated one after another, corresponding to the number of pulses provided by said pulse generator.
Claim 50
Dependent Claim
38 words
A camera according to claim 48, comprising means responsive to an output of said pulse counter (500) for disconnecting said switch means upon completion of a desired number of pulses for which said pulse counter has been set.
Claim 51
Dependent Claim
27 words
A camera according to claim 49, characterized by the fact that the pulse generator (400) can be disconnected simultaneously via said output of said pulse counter (500).
Claim 52
Dependent Claim
101 words
A camera according to claim 48, including means for preselecting a ''''multi-exposure'''' program, and a film transport control line (5), characterized by the fact that said switch means for interrupting the course of the program includes two series-connected transistors (301, 302), a connection via a multi-exposure selector switch (MW) to a current supply (VII or 204), and circuit means so arranged that with the multi-exposure program connected and the multi-exposure selector switch operative, said first mentioned transistor (301) is blocked via the output of said pulse-counter, and the second mentioned transistor (302) is driven via said film transport control line (5).
Claim 53
Dependent Claim
40 words
A camera according to calim 51, characterized by means for eliminating the interruption of the course of the program and for short circuiting the pulse generator (400), said last named means being operable when said first mentioned transistor is blocked.
Claim 54
Dependent Claim
40 words
A camera according to calim 51, characterized by means for eliminating the interruption of the course of the program and for short circuiting the pulse generator (400), said last named means being operable when said first mentioned transistor is blocked.
Claim 55
Dependent Claim
63 words
A camera accoridng to claim 48, further comprising a ''''master-clear'''' input for said control and program part, said pulse generator (400) having an output connected with said ''''master-clear'''' input and also connected with a clock input (501) of said pulse counter (500), siad counter having a reset-zero input (507) connected via a capacitor (508) to a current supply siwtch (203) of the camera.
Claim 56
Dependent Claim
94 words
A camera according to claim 48, characterized by the fact that said additional controller has a second pulse generator (600) whose output is connected with a clock input (18) of said step-by-step switch, said second generator giving off in rapid sequence a number of pulses corresponding to the switch steps to be passed through by the step-by-step switch from the beginning of the course of tHe program for the taking of a picture until the actuation of said shutter operating means for opening said shutter for the starting of the exposure of the film.
Claim 57
Dependent Claim
57 words
A camera according to claim 54, further including a second pulse counter (700), said second pulse generator (600) being operatively connected by a pulse given off by said first pulse generator (400), and being operatively disconnected by a pulse given off by said second pulse counter (700) after a required number of pulses has been given off.
Claim 58
Dependent Claim
93 words
A camera according to claim 55, further comprising a transistor (706) is connected in parallel to said second pulse generator (600), the base of said transistor being adapted to be actuated by an output of said second pulse counter (700) which corresponds to the number of pulses to be given off, a clock input (701) of said second pulse counter being connected with the output of the second pulse generator, and a reset-zero input (707, 708) of said second pulse counter being connected with an output (404) of said first pulse generator (400).
Claim 59
Dependent Claim
51 words
A camera according to claim 41, characterized by the fact that said switch means for the interruption of the course of the program of said additional controller are combined in a component adapted to be electrically connected detachably to said control and program part by plugging said component into said part.
Claim 60
Dependent Claim
165 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing the shutter to terminate the exposure, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, and manually controlled electric circuit means selectively operable to cause said step-by-step switching means to progress successively through a complete operative cycle of steps or to progress through only a selected number of such steps, omitting others.
Claim 61
Dependent Claim
165 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing the shutter to terminate the exposure, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, and manually controlled electric circuit means selectively operable to cause said step-by-step switching means to progress successively through a complete operative cycle of steps or to progress through only a selected number of such steps, omitting others.
Claim 62
Dependent Claim
192 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing the shutter to terminate the exposure, said control means comprising a program control assembly, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, and means for resetting said step-by-step switching means to a previous step in its series of steps when a measurement circuit is activated during a time when the diaphragm aperture and shutter speed of the associated camera are set at values which are improper with relation to the prevailing illumination of a subject to be photographed.
Claim 63
Dependent Claim
192 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing the shutter to terminate the exposure, said control means comprising a program control assembly, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, and means for resetting said step-by-step switching means to a previous step in its series of steps when a measurement circuit is activated during a time when the diaphragm aperture and shutter speed of the associated camera are set at values which are improper with relation to the prevailing illumination of a subject to be photographed.
Claim 64
Dependent Claim
189 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing thE shutter to terminate the exposure, said control means comprising a program control assembly, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, further comprising a winding for opening said shutter, and a circuit arrangement including a monoflop for supplying current to said winding to open said shutter, said circuit arrangement being so formed that it supplies current to said winding to open said shutter only for a specific time which does not over-stress said winding.
Claim 65
Dependent Claim
189 words
Photographic camera control means for controlling electronically the sequence and timing of the functions of setting one of two variable exposure value factors of an associated photographic camera, opening a shutter to start an exposure, and closing thE shutter to terminate the exposure, said control means comprising a program control assembly, input means for feeding into said assembly values participating in the proper selection of an exposure value factor to be set, and output means from said assembly for setting said variable exposure value factor and for opening said shutter and closing said shutter, said control means including pulse generating means, said output means including a plurality of electronic logic circuits, said assembly including step-by-step switching means operated by said pulse generating means, said switching means activating successively one after another of said electronic logic circuits, further comprising a winding for opening said shutter, and a circuit arrangement including a monoflop for supplying current to said winding to open said shutter, said circuit arrangement being so formed that it supplies current to said winding to open said shutter only for a specific time which does not over-stress said winding.
Claim 66
Dependent Claim
206 words
Photographic camera control means comprising: (a) a plurality of electronic logic circuits for controlling the following operating functions of a camera associated with the control means, viz: (1) closing an auxiliary shutter, (2) lowering a relfex mirror, (3) opening a main shutter, (4) setting an exposure factor in accordance with the brightness of light entering through the open main shutter, (5) closing the main shutter, (6) raising the reflex mirror, (7) opening the auxiliary shutter, (8) opening the main shutter to start an exposure interval, (9) closing the main shutter to terminate the exposure interval, and (10) operating a film winding motor; (b) impulse generating means; (c) step-by-step switching means receiving pulses from said impulse generating means and supplying impulses to selected ones of said logic circuits; (d) program control means responsive to certain of said logic circuits for controlling said impulse generating means and said step-by-step switching means; (e) first manual switch means effective to initiate action of said program control means to run through a full cycle to perform all of said functions; and (f) second manual switch means effective to cause said program control means to run through a partial cycle to perform only a selected part of said functions without performing others.
Claim 67
Dependent Claim
206 words
Photographic camera control means comprising: (a) a plurality of electronic logic circuits for controlling the following operating functions of a camera associated with the control means, viz: (1) closing an auxiliary shutter, (2) lowering a relfex mirror, (3) opening a main shutter, (4) setting an exposure factor in accordance with the brightness of light entering through the open main shutter, (5) closing the main shutter, (6) raising the reflex mirror, (7) opening the auxiliary shutter, (8) opening the main shutter to start an exposure interval, (9) closing the main shutter to terminate the exposure interval, and (10) operating a film winding motor; (b) impulse generating means; (c) step-by-step switching means receiving pulses from said impulse generating means and supplying impulses to selected ones of said logic circuits; (d) program control means responsive to certain of said logic circuits for controlling said impulse generating means and said step-by-step switching means; (e) first manual switch means effective to initiate action of said program control means to run through a full cycle to perform all of said functions; and (f) second manual switch means effective to cause said program control means to run through a partial cycle to perform only a selected part of said functions without performing others.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |