EP0171782B1 - Pièce d'horlogerie électronique avec possibilité de correction de l'indication des secondes - Google Patents

Pièce d'horlogerie électronique avec possibilité de correction de l'indication des secondes Download PDF

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Publication number
EP0171782B1
EP0171782B1 EP85110098A EP85110098A EP0171782B1 EP 0171782 B1 EP0171782 B1 EP 0171782B1 EP 85110098 A EP85110098 A EP 85110098A EP 85110098 A EP85110098 A EP 85110098A EP 0171782 B1 EP0171782 B1 EP 0171782B1
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EP
European Patent Office
Prior art keywords
correction
seconds
timepiece
circuit
stem
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP85110098A
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German (de)
English (en)
French (fr)
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EP0171782A1 (fr
Inventor
Pierre-André Meister
Daniel Koch
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ETA SA Manufacture Horlogere Suisse
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Eta SA Fabriques dEbauches
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/04—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently
    • G04G5/043—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently using commutating devices for selecting the value, e.g. hours, minutes, seconds, to be corrected
    • G04G5/045—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently using commutating devices for selecting the value, e.g. hours, minutes, seconds, to be corrected using a sequential electronic commutator
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/04—Setting, i.e. correcting or changing, the time-indication by setting each of the displayed values, e.g. date, hour, independently

Definitions

  • the present invention relates to an electronic timepiece capable of indicating at least the hours, the minutes and the seconds and which comprises means making it possible to set a fine time, that is to say to correct the indication of the seconds.
  • Such timepieces have at least one common drawback: there is always the risk that the user will lose the exact time without wanting to. This is what will happen, for example, if he has a watch fitted with a rod which, in the pulled position, makes it possible to correct the minutes or other information, such as the date or time zone, depending on whether it is turns in one direction or the other or at different speeds, and if it begins to touch, by a false maneuver, to the minutes when it only wanted to modify the other information.
  • the main object of the present invention is to provide a timepiece which, while preferably having only one control member, allows the user to proceed according to his desire or else to correct the minutes, or either to a correction of the seconds, or even to a setting of the two to carry out a complete time setting.
  • Another object of the invention is to design such a timepiece so that there is no, or at least very little, risk for the user to involuntarily lose the exact time when he owns it.
  • the timepiece according to the invention which includes a time base for producing a standard frequency signal, a frequency divider circuit coupled to this time base for producing time pulses, a display assembly capable of indicating at least the minutes and seconds in response to these time pulses, a manual control member, and a correction circuit which, when the control member is actuated in a first manner , switches the timepiece from a normal operating mode to a correction mode in which the indication of the minutes can be corrected by actuating the control member in a second way
  • this correction circuit comprises a circuit seconds reset control which, in the case where the control member has been actuated only in the first manner and in that in which the control member has been actuated both and successively from the first and from the second way, allows the timepiece to be placed in a transient seconds reset mode, for a determined maximum time, for example approximately one minute, from the moment the timepiece exits correction mode and which is provided for, instantly, acting on the display assembly so that the seconds indication is set to zero and returning
  • the timepiece according to the invention is designed so that the indication of the seconds does not stop progressing normally when the timepiece is in correction mode, or when it is in the transient delivery mode. at zero seconds, as long as the controller is not actuated in the third way.
  • the correction circuit can therefore be designed to make it possible to correct only this indication by actuating the control member in a fourth manner when the timepiece is in correction mode.
  • the correction circuit is arranged to return the timepiece directly from the correction mode to the normal operating mode, when only the indication of the hours has been corrected. The same applies if the timepiece is produced to allow the minutes and hours to be corrected jointly by actuating the control member in the second way and if the fourth way is reserved for other information, for example a date .
  • control member can be constituted by a rotary rod which can be moved axially between at least three positions, a stable neutral position, an equally stable pulled position and an unstable pushed position
  • first, second, third and fourth ways of actuating the control member can then advantageously consist in, respectively, passing the rod from the neutral position to the pulled position, turning it slowly, temporarily passing it from the neutral position to the pushed position and turning it quickly, the timepiece exiting the correction mode when the rod passes from the pulled position to the neutral position.
  • the watch shown in FIG. 1, which includes an electro-optical display device 1 with six characters, is only intended to simultaneously and permanently indicate the hours, minutes and seconds and that it cannot perform other functions such as calendar, alarm clock or chronograph.
  • it allows the user to modify the time it gives according to the time zone in which it is located.
  • the single control member that the watch comprises consists of a rotary rod 2 which can be moved axially between three positions, namely a stable neutral position 1, which corresponds to the normal operation of the watch, a pulled position It is also stable and an unstable thrust position III, in which a return spring permanently tends to return the rod to its normal position I.
  • the rough setting is done by turning the rod 2 slowly in one direction or the other depending on whether the watch must be advanced or delayed.
  • a time zone change is made by subjecting the rod to one or more rapid rotations, each rotation increasing or decreasing the number of hours displayed by one unit. In either case, the flashing of the display is interrupted during correction.
  • the watch then automatically places itself for a certain time, for example about a minute, in a mode which allows, if desired, to reset the seconds indication to zero.
  • this mode is distinguished from the normal operating mode only by a flashing of the seconds display which continues to progress normally.
  • This circuit includes a time base 3, such as a crystal oscillator, to produce a standard frequency signal of 32,768 Hz for example.
  • a time base 3 such as a crystal oscillator
  • This signal is applied to the input of a frequency divider 4 composed of a series of flip-flops connected in cascade and which provides at its output a time pulse signal whose frequency is 1 Hz.
  • This output of the divider 4 is connected to the counting input CL of a second counter 5 which also includes a reset input R, a status output Q 1 , multiple, at which a plurality of binary signals appears permanently representing the content of the counter, and a simple counting output Q 2 , from which a pulse comes out each time the counter is completely filled.
  • the output G 2 of the counter 5 is connected via a timer circuit 6 whose function will appear later and of an OR gate 7 to the counting input CL of a minute counter 8 whose output C 2 is itself connected to the CL input of an hour counter 9.
  • the counters 8 and 9 naturally have state outputs A, similar to that of the second counter 5.
  • they are reversible and, therefore, each have a C / D input intended to receive a logic signal whose level determines the direction of counting. It will be admitted that, each time one of these counters receives a pulse at its counting input CL, its content is incremented by one if this signal is at the high logic level or "1" is decremented otherwise.
  • the state outputs of the three counters 5, 8 and 9 are connected to three respective inputs a, b, c of a circuit 10 which, by its multiple output f, controls the display device 1 of the watch.
  • This display control circuit 10 is entirely conventional and can be limited to a decoder and to the means which, in response to the 1 Hz signal supplied by the divider 4 and to a control signal applied respectively to a fourth, d , and a fifth, e, circuit entry, allow the characters indicating the hours and minutes or those indicating the seconds to flash.
  • the control signal is of course not simple but formed by at least two elementary logic signals, since, from the blinking point of view, there are three possible states for the device 1, the total absence of blinking while being one.
  • the circuit of FIG. 2 also includes a switching device 11 for supplying signals indicating at all times the axial position occupied by the time-setting rod represented in FIG. 1, another 12, for producing signals representative of the rotational movements of this rod, independently of its position, and a circuit correction 13 responsible for producing, in response in particular to these various switching signals, other signals which, applied to the counters 5, 8 and 9, to the timer circuit 6, to the door 7 and to the display control circuit 10, allow either to let the watch run normally, or to make the various corrections indicated above.
  • a switching device 11 for supplying signals indicating at all times the axial position occupied by the time-setting rod represented in FIG. 1, another 12, for producing signals representative of the rotational movements of this rod, independently of its position
  • a circuit correction 13 responsible for producing, in response in particular to these various switching signals, other signals which, applied to the counters 5, 8 and 9, to the timer circuit 6, to the door 7 and to the display control circuit 10, allow either to let the watch run normally, or to make the various corrections indicated above.
  • the first switching device consists of a conductive part 14 mechanically coupled to the rod and connected to the positive terminal of the supply voltage source of the watch and of three fixed contacts 15, 16, 17 each connected by the through a resistance to earth, i.e. to the negative terminal of the voltage source.
  • the conductive part 14 respectively touches the contact 15, 16 or 17 and brings the latter to the potential of the positive pole of the source. At each contact therefore appears a signal A, B or C which is at the high logic level or "1" when this contact is touched by the part 14 and at the low level or "0" otherwise.
  • the second switching device, 12 is composed of two switches 19, 20 each comprising an electrically conductive elastic strip 21, respectively 22, one end of which is fixed and connected to the positive terminal of the voltage source and the l 'other end can be alternately applied against and away from a fixed contact 23, respectively 24, connected to ground through a resistor.
  • switches 19, 20 each comprising an electrically conductive elastic strip 21, respectively 22, one end of which is fixed and connected to the positive terminal of the voltage source and the l 'other end can be alternately applied against and away from a fixed contact 23, respectively 24, connected to ground through a resistor.
  • these switches are actuated by means not shown, so as to generate two signals CP1 and CP2, each formed of a series of pulses whose frequency is proportional to the speed of rotation of the rod and phase shifted with respect to each other, the sign of the phase shift depending on the direction of rotation.
  • the actuating means in question can be for example those found in patent CH 632 894, that is to say two cams of elliptical shape, carried by the rod, centered on the latter and whose major axes form an angle of about 45 ° between them.
  • the switching device 12 is designed to operate regardless of the axial position of the rod, which means that the correction circuit 13 must include means for inhibiting the effects of the signals which can be produced when the rod is not in the pulled position.
  • the switches would only be actuated when the rod is in position II, but there is a good chance that it will be more difficult to carry out from the mechanical point of view and less reliable than the 'other.
  • the correction circuit 13 is formed by a circuit encoding the rotational movements of the rod, a logic control circuit 26 and a seconds reset control circuit 27.
  • the encoder circuit 25 two inputs a and b of which are connected to the fixed contacts 23 and 24 of the switching device 12 and which receives on a third input c a periodic signal of 256 Hz for example, taken at the output of an intermediate stage of the frequency divider 4, is similar to that described in the aforementioned patent CH 632 894. Composed essentially of flip-flops and doors, it begins by ridding the switching pulses generated by switches 19 and 20 of the parasitic signals which accompany them and which are due to rebounds of the blades 21 and 22 on the fixed contacts and then produces from of these, a signal SR also formed of pulses whose number and frequency are respectively proportional to the angle and the speed of rotation of the rod and a signal SS representative of the direction of rotation.
  • the signal SS is at logic level "1" and remains there as long as the rod is not not rotated in the opposite direction.
  • the SS signal goes to level "0" and so on.
  • the pulses which constitute the SR signal are produced at the rate of eight per revolution of the rod.
  • the outputs d and e of the encoder circuit 25 by which the signals SR and SS are delivered are connected to two inputs a and b of the logic circuit 26.
  • a fifth, e, which is multiple, receives different periodic signals taken from the outputs of intermediate stages of the divider of frequency 4, which the circuit needs to process the other signals it receives and produce the signals it needs.
  • a sixth, f, also multiple, is connected to the state output CI, of the second counter 5.
  • the last two, g and h are provided to receive, one, the pulse which, as we will see thereafter, is generated by the control circuit resetting to zero seconds 27 when the user actually performs a fine time setting during the time available, and the other an impulse which is produced by this same circuit at the end of the period if, on the contrary, such a correction has not been made.
  • the control circuit 26 also has five outputs i, j, k, I, m. At the first, i, of these outputs appears a logic signal FS which retains the same value, for example "1" except during the periods when, as will be seen later, pulses of high frequency are sent to the minute counter 8 to modify the display of an entire hour and where it then takes the value "0".
  • This signal FS is applied to an input of the timer circuit 6 which receives on another the pulses coming from the counting output Q 2 of the seconds counter 5 and whose output is connected to a first input of the OR gate 7.
  • This circuit 6 has the function of memorizing a pulse coming from counter 5 if it is produced while the signal FS is at "0" and then restoring this pulse at its output as soon as the latter returns to level "1". Otherwise, it simply transmits the pulses from the counter to gate 7 as soon as it receives them. It can be produced for example in the same way as that described in detail in US Pat. No. 4,398,831 and use to operate a periodic signal of the same frequency as the pulses which make it possible to correct the display of an hour, signal which it would receive from the frequency divider 4 via a link not shown in the drawing.
  • the second output, j, of the control circuit which, for its part, is connected to a second input of the OR gate 7, is reserved for the correction pulses CP that the circuit 26 is also responsible for generating. These impulses are all the same. Only their number differs according to the type of correction made.
  • the signals CSS and FCS which make it possible to respectively control the counting direction of the counters 8 and 9 and the flashing of the characters of the display device 1.
  • the output k is connected to the inputs C / D of the counters and the output 1 to the input e of the display control circuit 10.
  • the nature of the CSS and FCS signals has already been indicated without having been designated. There is therefore no need to come back to it here.
  • the signal CSS is always at logic level "1" except when the control rod is both in the pulled position and turned in the direction which allows to delay the watch.
  • the seconds reset control circuit 27 comprises six inputs a to f and two outputs g and h. Three of the inputs a, b and c are respectively connected to the fixed contacts of the first switching device 11 while the other three d, e and f receive separately the 1 Hz periodic signal supplied by the frequency divider 4, the control pulses CCP correction which appear at the fifth output of the control circuit 26 and the CP correction pulses from the second output, j, of this same circuit.
  • the first, g is connected to both the reset input R of the second counter 5 and to the input g of the control logic circuit, while the second, h, is connected to input h of the latter.
  • the signal FS applied to the timer circuit 6 and the signal CSS for controlling the counting direction are at logic level "1".
  • the pulses which appear at the counting output Q 2 of the second counter are therefore transmitted as soon as they are produced at counter 8 which sees its content increasing by one unit every minute, while the pulses emitted every hour by this counter 8 in turn increments the content of counter 9.
  • the elementary signals which make up the signal FCS applied to the input e of the display control circuit 10 are then at logic levels such as the device d display 1 indicates the status of counters 5, 8 and 9 without the numbers flashing.
  • the logic control circuit 26 reacts by modifying the FCS signal which it delivers on its output 1, so that the control circuit 10 causes the display of the hours and minutes to flash using the signal of 1 Hz applied to its input d, and it prepares to process any SR pulses that it could then receive on its input instead of blocking them.
  • the logic circuit 26 begins by counting for a determined time, for example sixty milliseconds, the first pulses SR which it receives from the encoder circuit 25. If it counts for example more than three pulses, it deduces therefrom that the stem is being rotated quickly and the correction to be made consists of a time zone change. It then generates within itself a CCP correction control pulse which results in the formation of sixty CP correction pulses.
  • These relatively high frequency CP pulses for example of 64 Hz, appear at the output j of the circuit and are transmitted via the OR gate 7 to the count input CL of the counter 8.
  • each pulse received by this counter has the effect of increasing its content, but at the end of the sixty pulses, the latter returns to the value it had initially.
  • the content of the counter 9 is found to be incremented by one. At the display device 1, this results in a rapid scrolling of the indication of the minutes which finally returns to the value it had at the start and by the progression of one unit of the indication of the hours when that of the minutes goes from 59 to 00.
  • the logic circuit brings the signal FS to the level "0" and it then brings it back to the level "1" as soon as it has emitted the last. Therefore, if a pulse appears in the meantime at the counting output G 2 of the second counter, the timer circuit 6 keeps it for a few moments in memory to transmit it to the minute counter immediately after returning to level "1" of the signal FS , which allows you to always keep the exact time.
  • the signal FCS is such that the display of the hours and minutes stops flashing.
  • the logic circuit 26 counts during the discrimination period of approximately sixty milliseconds only three pulses SR or less, it understands that the correction to be made is a simple time setting and as soon as this period is over it generates, in response to each SR pulse it receives, a CCP correction control pulse which, in turn, causes the formation of a CP correction pulse, as long as the rod continues to be rotated.
  • the circuit could also be designed to produce only one pulse for two or even more SR pulses received, the division being made at the level of the generation of CCP pulses or after.
  • the correction pulses CP whose frequency and number are no longer fixed but proportional respectively to the speed of rotation of the rod and to the angle by which the latter is pivoted after the end of the discrimination period, allow the content of counter 8 and, if necessary, that of counter 9 to be changed at will.
  • the signal FS is always left at "1" because the fact that a pulse from the second counter can be added to the correction pulses CP is immaterial.
  • the encoder circuit 25 produces only eight SR implusions per revolution of the rod, it is clear that one cannot modify the display by more than a few minutes without ceasing to rotate the rod. Very often, given the precision of quartz watches, this can be sufficient to set a rough time. However, we may have to make much larger corrections. In this eventuality, if one succeeds in turning the rod several times without stopping for more than half a second, for example between each manipulation, at the moments of the second and subsequent rotations, the control circuit 26 continues to produce a correction pulse in response to each SR pulse. Otherwise, it begins again, at the start of each new maneuver, to count the first pulses it receives.
  • this phase of discrimination which is necessary for the watch circuit to know whether the correction to be made consists of a time zone change or a simple time setting also represents security. Indeed, if after having pulled on the rod one turns it involuntarily, SR pulses can be produced by the encoder circuit 25 but there is practically no chance that they will be in sufficient number to trigger the formation of a correction command pulse.
  • the fact of bringing the rod into the pulled position has the consequence of bringing it out of its rest state. If the rod is then quickly rotated for a time zone change, it receives on its input e the CCP correction command pulse generated by the logic circuit 26 but this has no effect on its operation. On the other hand, it counts the correction pulses CP which arrive at its input f and, at the sixtieth, it automatically returns to its rest state without having emitted any signal. If the rod is rotated again in the same way, the CCP pulse produced reactivates the circuit, which allows it then to count the new correction pulses and to return to the rest state.
  • the reset control circuit starts to count the pulses of 1 Hz which it receives on its input d while the logic circuit 26 s' arranges so that it is no longer the hour and minute indication which blinks but that of the seconds.
  • the circuit 27 detects an inversion of logic level between the signals A and C due to a pressure on the rod before having counted sixty pulses of 1 Hz, as soon as this change occurs it provides a pulse either on its exit h but on its exit g, this at the same time that it finds its state of rest.
  • This pulse designated by RP is received both by the second counter 5 whose content is immediately reset to zero and by the logic circuit 26 which immediately modifies the signal FCS to stop the flashing of the seconds display and which, knowing the content of counter 5 just before resetting it to zero, sends a correction pulse CP to the minute counter 8 if this content exceeds thirty.
  • this pulse CP is also sent to the reset control circuit but it is easy to avoid it being taken into account by providing blocking means in this circuit or, as we will see it later, by arranging so that the counter that the latter must necessarily include to count the pulses applied to its input f is reset to zero when the rod is brought into the pulled position.
  • FIG. 3 shows a possible embodiment of the circuit 27 for controlling the reset of seconds.
  • the circuit includes three identical monostable circuits 28, 29 and 30, the inputs TR of which are connected respectively to the inputs c, a and b of the circuit which receive the signals C, A and B produced by the first switching device 11 (see FIG. 2).
  • the output Q of the monostable circuit 28 associated with the input c is connected via an inverter 31 to a first input of an AND gate 32 whose second input is connected directly to the input c of the circuit and whose the output feeds a first input of an OR gate 33 which has three.
  • the output of this OR gate 33 is connected to the reset input R of an RS 34 flip-flop conventionally formed by two NOR gates not shown and whose output Q is connected to one of the two inputs an AND gate 35, the other input of this gate being connected to the output Q of the monostable circuit 28 and its output to that g of the circuit.
  • the input for setting the state S of the flip-flop 34 is itself connected to the output of an OR gate 36, one input of which is connected to the output Q of the monostable circuit 30 and the other input of which is intended for receive the CCP correction control pulses when these are applied to the circuit input e.
  • the output of the OR gate 36 is also connected to the input for bringing to the state S of another flip-flop of the RS 37 type, the output of which supplies one of the two inputs of an AND gate 38 and the reset input R is connected to the output of this same gate 38 via two inverters 39 and 40 and an OR gate 47 with two inputs.
  • the AND gate 38 the other input of which is connected to the output Q of the monostable circuit 29, has its output also connected to the input for bringing to the state S of a third flip-flop 41 of the same type as the other two and the reset input R of which is connected, via an OR gate 42 with two inputs, to the output Q of the monostable circuit 28.
  • the output Q of this third flip-flop 41 is connected to an input of an AND gate 43 which receives on its other input the signal of 1 Hz applied to the input d of the circuit and which has its output connected to the counting input CK of a counter by sixty 44.
  • the reset input R presented by this counter is connected to the input b of the circuit via an inverter 45 while its counting output is connected at the same time to a second input of the OR gate 33 , at the input of the OR gate 42 which is not connected to the output of the monostable circuit 28 and to the output h of the circuit.
  • the circuit also includes another counter by sixty, 46, which is designed to receive directly, on its counting input CK, the correction pulses CP when they appear at the input f.
  • the reset input of this other counter is also connected to the output of the inverter 45. As for its counting output Q, it supplies the third input of OR gate 33 and the input of OR gate 47 which is not connected to the output of the inverter 40.
  • FIGS. 4a to 4d can help to better understand the operation of the circuit which will now be explained.
  • Each of the diagrams shows the signals B, C, CCP, CP and RP which have already been mentioned since these are input and output signals and the signals BRP, CRP, HCRP and BS which are internal to the circuit and which are those which appear at the outputs of the monostable circuits 30 and 28 respectively, of the counter 46 and of the flip-flop 34.
  • the signals A, B, C which are applied to the inputs a, b and c of the circuit and which come from the fixed contacts 14, 15, 16 of the switching device 11 are respectively at logic levels "1", "0" and "0" and the circuit is in the rest state.
  • the outputs Q of the monostable circuits 28 to 30 and of the flip-flops 34, 37 and 41 are then all at level "0". 1 Hz pulses do appear at the input d of the circuit, but these are blocked by the AND gate 43, since the output of the flip-flop 41 is at "0".
  • counters 44 and 46 their content depends on the last correction that was made.
  • the rod is returned to the neutral position without having carried out either a simple time zone change or a rough time setting, it is this time the monostable circuit 29 which emits a pulse similar to that produced previously by circuit 30.
  • This pulse is transmitted by the AND gate 38 until the flip-flop 37 reacts to the change in level of the output of this gate by bringing its output Q back to the level "0".
  • the inverters 39 and 40 make it possible to delay a little the moment when the door 38 closes again, that is to say to slightly increase the duration of the pulse which appears at the exit from it. However, it is clear that these inverters could possibly be eliminated.
  • This pulse from the AND gate 38 and transmitted to the state input of flip-flop 41 has the effect of passing the output Q of the latter to level "1" and, consequently, making the AND gate 43. From this instant, the counter 44 therefore begins to count the pulses of 1 Hz which it receives on its input CK.
  • this counter has not counted sixty pulses, which corresponds substantially to one minute, its output remains at level "0" and it is only at the moment when it receives the sixtieth that it emits it at turn one, at the same time as its content returns to zero.
  • the doors 35 and 38 will remain closed until the rod is again brought into the pulled position and, until then, they will block all the pulses which may be produced by the monostable circuits 28 and 29 in response to voluntary or involuntary pressures on the rod.
  • the circuit operates in exactly the same way as in the case considered above except that, before the rod is returned to the neutral position, the flip-flops 34 and 37 receive on their state input S, after the BRP pulse, CCP correction control pulses which have no effect and that the counter 46 counts the pulses CP correction resulting from these. This is illustrated by the diagram in FIG. 4b where the reset of the seconds is preceded by a correction of two minutes.
  • the flip-flops 34 and 37 receive only a correction command pulse CCP which, again, does not change their state.
  • the counter 46 counts the sixty correction pulses CP which are applied to its input and, at the sixtieth, it delivers at its output a pulse HCRP, this at the same time as its content automatically returns to zero.
  • This HCRP pulse is transmitted by the OR gates 33 and 47 respectively to the R inputs of flip-flops 34 and 37. The Q outputs of these flip-flops then return to logic level "0", which causes the AND gates 35 and 38 to close.
  • the new command pulse CCP correction received by the circuit returns the Q outputs of flip-flops 34 and 37 to level "1" and everything then happens as if the rod had been turned just after having pulled it.
  • the counter 46 emits an HCRP pulse which brings back the outputs of the flip-flops 34 and 37 at "0", but immediately after the sixty-first CCP pulse causes them to go back to "1" and everything happens as if this pulse came from the monostable circuit 30 and if the sixty-first correction pulse was the first .
  • circuit 27 so that it does not return to its rest state until the rod is brought back to the neutral position.
  • the watch circuit could be implemented in such a way that it is not possible to make successive time zone changes of one hour or a correction of the minutes after a time zone change without returning the rod to the neutral position.
  • the watch could be designed so that this reset can be controlled other than by pressing the rod, for example by a rapid pivoting thereof in neutral position, although a solution of this kind is less practical and less safe.
  • many known watches to which the invention can be applied and which are less simple than that which has been described, are already provided with a rod with several positions including an unstable thrust to allow, for example, timing, stopping a ringtone, storing a wake-up time, etc. This position can also be used to control a reset of seconds.

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EP85110098A 1984-08-14 1985-08-12 Pièce d'horlogerie électronique avec possibilité de correction de l'indication des secondes Expired EP0171782B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3895/84 1984-08-14
CH389584A CH657959GA3 (xx) 1984-08-14 1984-08-14

Publications (2)

Publication Number Publication Date
EP0171782A1 EP0171782A1 (fr) 1986-02-19
EP0171782B1 true EP0171782B1 (fr) 1988-07-20

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EP85110098A Expired EP0171782B1 (fr) 1984-08-14 1985-08-12 Pièce d'horlogerie électronique avec possibilité de correction de l'indication des secondes

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US (1) US4611927A (xx)
EP (1) EP0171782B1 (xx)
JP (1) JPS6162892A (xx)
CH (1) CH657959GA3 (xx)
DE (1) DE3563886D1 (xx)
HK (1) HK14092A (xx)
SG (1) SG55291G (xx)

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Publication number Priority date Publication date Assignee Title
CH673924B5 (xx) * 1988-04-19 1990-10-31 Rolex Montres

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JPS5060261A (xx) * 1973-09-27 1975-05-24
JPH0310916B2 (xx) * 1974-10-31 1991-02-14 Citizen Watch Co Ltd
JPS5355079A (en) * 1976-10-28 1978-05-19 Citizen Watch Co Ltd Correction system of electronic watch
DE2658105B2 (de) * 1976-12-22 1979-03-22 Diehl Gmbh & Co, 8500 Nuernberg Kontaktgesteuerter Impulsgenerator
JPS53131874A (en) * 1977-04-22 1978-11-17 Seikosha Kk Signal generator
DE2726383C2 (de) * 1977-06-10 1985-07-18 Diehl GmbH & Co, 8500 Nürnberg Elektromechanische Stelleinrichtung für eine elektronische Digitalanzeige
US4245338A (en) * 1977-11-10 1981-01-13 Citizen Watch Company Limited Time correction system for an electronic timepiece
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CH643427B (fr) * 1981-03-05 Ebauchesfabrik Eta Ag Montre electronique.

Also Published As

Publication number Publication date
JPS6162892A (ja) 1986-03-31
CH657959GA3 (xx) 1986-10-15
HK14092A (en) 1992-02-28
EP0171782A1 (fr) 1986-02-19
US4611927A (en) 1986-09-16
DE3563886D1 (en) 1988-08-25
SG55291G (en) 1991-08-23
JPH0354799B2 (xx) 1991-08-21

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