EP0679968B1 - Uhr mit mechanischem Antrieb und mit elektronischer Steuerung - Google Patents

Uhr mit mechanischem Antrieb und mit elektronischer Steuerung Download PDF

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Publication number
EP0679968B1
EP0679968B1 EP95105590A EP95105590A EP0679968B1 EP 0679968 B1 EP0679968 B1 EP 0679968B1 EP 95105590 A EP95105590 A EP 95105590A EP 95105590 A EP95105590 A EP 95105590A EP 0679968 B1 EP0679968 B1 EP 0679968B1
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EP
European Patent Office
Prior art keywords
rotor
generator
timepiece
speed
braking
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Expired - Lifetime
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EP95105590A
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English (en)
French (fr)
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EP0679968A1 (de
Inventor
Wiget Fridolin
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Asulab AG
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Asulab AG
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C11/00—Synchronisation of independently-driven clocks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components

Definitions

  • a timepiece with these characteristics which is described for example in patent US-A-3937001, a the same precision as an electronic timepiece classic thanks to the fact that the reference pulses, whose frequency determines the speed of rotation of the generator rotor and therefore that of the needles display of the current time, are produced from of a signal supplied by a quartz oscillator.
  • this timepiece does not contain battery or accumulator since the supply of its electronic circuits is provided by energy electric supplied by its generator whose rotor is connected to its mechanical energy source, which is made up by a barrel spring similar to that which is used in mechanical timepieces classics.
  • the braking means of the generator rotor consist of a resistor connected in series with an electronic switch, the assembly formed by this resistor and this switch being connected in parallel with the generator coil.
  • this switch is controlled directly by the comparison signal so as to be closed in permanently when the latter is in its first state, i.e. as long as the generator rotor is ahead in relation to the position he would occupy if he had always turned at its set speed.
  • Electronic circuits of the timepiece are supplied by a DC voltage supplied by a rectifier circuit of the alternating voltage produced by the generator.
  • the rotor of the generator can be braked continuously for one quite long time. It is therefore practically excluded from choose a zero value for the braking resistor, because the rectifier circuit capacitor should then have a very high capacity and therefore should be enough bulky and expensive. Besides, it would not be possible to determine with certainty the ability that this capacitor should have since the maximum time during which the generator rotor can be braked does not cannot be planned in advance.
  • the voltage alternative produced by this coil is decreased by one because of the decrease in rotation speed which results from this connection and, on the other hand, because of the voltage drop produced in the generator coil by the current absorbed by the braking resistor.
  • the braking torque applied to the rotor of the generator is higher as the value of the braking resistance is low, this braking torque being maximum when this braking resistor has a null value.
  • This braking torque must obviously impose on the generator rotor a rotation speed lower than its target speed regardless of the engine torque supplied by the barrel spring.
  • this engine torque can be as high as possible, which influences favorably the autonomy of the timepiece, i.e. the time during which it can operate without that its barrel spring must be reassembled, it is necessary so that the braking torque is also high, this which implies that the braking resistor has a value low.
  • this resistance should have a null value.
  • the rotor braking resistor must therefore fill two contradictory conditions. On the one hand, it must be high enough, and in any case not zero, to that the supply voltage of electronic circuits is sufficient in all circumstances. On the other hand, it must be low enough, and preferably zero, to the braking torque is high and the speed of rotor rotation, when braked, less than its set speed even when the engine torque provided by the mechanical energy source is maximum.
  • a coil having a large number of turns of a small diameter wire has a high internal resistance which, on the one hand, is added to the braking resistor and decreases the torque by braking of the rotor and, on the other hand, causes a decrease in the alternating voltage produced by the generator when the current supplied by the latter.
  • An object of the present invention is to provide a timepiece of the same kind as that described in the patent US-A-3,937,001 already mentioned but which does not not have the disadvantages of it, that is to say a timepiece in which the value of the rotor braking resistance may be very low, or even zero, without the need to give the generator coil a high number of turns and without that there is a risk of seeing, in any circumstance that that is, the supply voltage of the circuits become insufficient for these are working properly.
  • this value very low, or even zero, of this braking resistance allows to choose the barrel spring driving the generator rotor so that its maximum torque is and the autonomy of the timepiece is therefore higher, all other things being equal, than that of the known timepiece mentioned above.
  • the part timepieces according to the present invention which is designated by the general reference 1 includes an energy source mechanical constituted by a barrel spring.
  • This barrel spring designated by reference 2 has not been represented only very schematically because it can be same kind as any of the barrel springs well known that are used in timepieces classic mechanics.
  • This barrel spring 2 is coupled to a manual or automatic winding which has not been shown because it can be similar to any of the well-known winding mechanisms which are also used in mechanical timepieces classics.
  • Barrel spring 2 is mechanically coupled to rotor 3a of an electric power generator 3 by through a gear train 4 symbolized by a mixed line.
  • This generator 3 also has a coil 3b, and it will not be described in detail since it may be achieved in various ways well known to specialists.
  • the rotor 3a comprises a bipolar magnet which has was simply symbolized by an arrow representing his magnetization axis.
  • the coil 3b is coupled magnetically to the permanent magnet of rotor 3a, by example via a stator which has not been shown, so as to produce between its terminals B1 and B2, in response to any rotation of the rotor 3a, a voltage alternative Ug whose period is equal to the period of rotation of the rotor 3a, that is to say at the time taken by this rotor 3a for a turn.
  • Terminals B1 and B2 of the coil 3b obviously constitute the output terminals of the generator 3.
  • Timepiece 1 also has a circuit rectifier 5 whose inputs 5a and 5b are respectively connected to terminals B1 and B2 of generator 3 and whose outputs 5c and 5d provide a voltage Ua at least substantially continuous in response to alternating voltage Ug produced by generator 3.
  • This voltage Ua is intended to supply the various electronic circuits which will be described later by drivers who have not been represented.
  • the rectifier 5 will not be described in detail since it can be similar to any of the rectifiers well known to specialists. We will simply mention that this rectifier 5 comprises, conventionally, a filter capacitor which is connected between its terminals 5c and 5d and which has not been shown.
  • the terminals 5a and 5c of the rectifier 5 are connected to each other and to the terminal B1 of generator 3.
  • the potential of these three terminals 5a, 5c and B1 was chosen arbitrarily as reference potential, or mass, and all voltages which will be mentioned in the remainder of this description will be voltages measured with respect to this potential of reference.
  • the timepiece 1 also includes means display of the current time which are constituted in this example by conventional needles, designated by the reference 6, but which can also consist of other well known items such as discs, drums or the like. It can also include one or several ancillary display devices such as a calendar, moon phase or other device. A such an ancillary device has not been shown.
  • Needles 6 and, if applicable, the ancillary devices, are mechanically connected to the spring barrel 2 and to the rotor 3a of the generator 3 by through a gear train, part of which less may be common with part of the train 4.
  • this gear train connected to needles 6 has not been referenced separately, and it is also symbolized by a mixed line.
  • Timepiece 1 also includes a mechanism setting the hands 6 and, if necessary, correction of the accessory device (s), which has not been shown because it can be similar to any various mechanisms of this kind which are well known to specialists.
  • the speed of rotation of the needles 6, which must heard to have a constant mean value and well determined, is controlled by a circuit 7 control of the speed of rotation of the rotor 3a to a set speed which will be called Vc in the following of this description.
  • the elements of the servo circuit 7 which determine the speed of rotation of the rotor 3a and which will be described later, as well as the gear train 4, are arranged so that the needles 6 rotate their normal speeds when the rotor 3a turns at the set speed Vc.
  • this set speed Vc has been set at 4 revolutions per second.
  • the characteristics of the barrel spring 2 and the various elements which it drives, as well as the characteristics of generator 3, are chosen so that the average speed of rotation of the rotor 3a is greater than the speed of setpoint Vc as long as the barrel spring 2 is not almost completely disarmed, provided that coil 3b is not short-circuited.
  • these characteristics are chosen so that this average speed of rotation is less than this set speed Vc if coil 3b is short-circuited under circumstances which will be described later, even when the barrel spring is fully wound and the engine torque which it provides therefore has its maximum value.
  • the servo circuit 7 mentioned above includes a comparator 8 whose direct input is connected at terminal B2 of generator 3 and whose reverse input is connected to the reference potential, so that the signal produced by its output, which will be called SM signal in the following this description, is alternately in the state “0" and in state “1" depending on whether the voltage Ug supplied by the generator 3 is negative or positive.
  • the period of the SM signal is obviously equal to that of Ug tension so that, in particular, this period of signal SM is 250 milliseconds when the rotor 3a of the generator 3 rotates at its set speed Vc which is 4 turns per second in this example.
  • the SM signal goes from its "0" state to its state "1" each time the rotor 3a of the generator 3 passes by a determined angular position, which is that at which the Ug voltage goes through its zero value in croissant.
  • the SM signal is therefore both a measurement signal of the speed of rotation of the rotor 3a and a signal detection of the passage of this rotor 3a by the position determined angle defined above.
  • the servo circuit 7 also includes a source of a reference signal SR, constituted, in this example, by an oscillator 9, which can be a crystal oscillator, and a frequency divider circuit 10 having an output Q1 which provides the SR signal in response to the signal produced by the oscillator 9.
  • a source of a reference signal SR constituted, in this example, by an oscillator 9, which can be a crystal oscillator, and a frequency divider circuit 10 having an output Q1 which provides the SR signal in response to the signal produced by the oscillator 9.
  • This oscillator 9 and this frequency divider 10 do not will not be described in detail as they can be made in various ways well known to those skilled in the art. We will simply mention that this oscillator 9 and this frequency divider 10 are arranged in such a way that the SR signal period is equal to that of SM signal when the rotor 3a of the generator 3 rotates at its speed of Vc setpoint, i.e. 250 milliseconds in the this example.
  • oscillator 9 a similar oscillator to the one used in the vast majority of rooms of electronic timepieces and which provides a signal having a frequency of 32,768 Hz, and by realizing the divider of frequency 10 in the well-known form of a series of 13 flip-flops often called flip-flops.
  • the frequency divider 10 has a second outlet, designated by Q2, providing a signal SC having a much shorter period, for example of the order of a hundred times shorter, than that of SR signal, the usefulness of which will be made clear more far.
  • this signal SC can be provided by the output of the sixth flip-flop of the frequency divider 10 and thus have an equal period at about 1.95 milliseconds.
  • the servo circuit 7 also includes a reversible counter, or up-down counter, which is designated by the reference 11.
  • the counting input C of this counter 11 is connected to the output Q of the divider of frequency 10 and therefore receives the signal SR, and its input of countdown D is connected to the output of comparator 8 and therefore receives the signal SM.
  • This reversible counter 11 will not be described in detail because it can be achieved in various ways well known. We will simply state that it is sensitive to rising flanks of the pulses it receives, i.e. when switching from logic state "0" to logic state "1" SR and SM signals. In other words, the content of this counter 11, i.e. the binary number formed by the logic states “0” or “1” of the direct outputs of various flip-flops that form it, is increased of one unit on each rising edge of the pulses of the SR signal and decreased by one on each rising edge of the SM signal pulses.
  • This counter 11 comprises in in addition to well-known means which make it possible to lift any ambiguity due to any overlap in time pulses it receives on its inputs C and D.
  • the counter 11 has an entry R of reset and it is arranged so that its content is kept at zero as long as this entry R is in logical state "1".
  • the counter 11 consists of n flip-flops, its content can take any value greater than or equal to zero and less than or equal to 2 n -1.
  • the operation of the counter 11 is cyclic, that is to say in particular that, when its content is equal to zero, this content takes the value 2 n -1 in response to a pulse applied to its down counting input D .
  • positive values of the content of counter 11 will be called those which are greater than or equal to zero and less than or equal to 2 (n-1) , and negative values of this content those which are greater than 2 (n-1) and less than or equal to 2 n -1.
  • the output Q of the counter 11 which is conventionally constituted by the direct output of the last of its flip-flops, is in the logical state "0" when the content of counter 11 is positive and in logic state "1" when this content is negative.
  • the output Q of the reversible counter 11 is connected to a first entry of an AND gate 12 of which the second input is connected to the output of comparator 8.
  • This door 12 is connected to the input S of a bistable rocker 13 of type R-S whose input R is connected to the output of an OR gate 14.
  • the flip-flop 13 is sensitive to the rising edges of the pulses it receives on its inputs S and R.
  • the direct output Q and the inverse output Q of this flip-flop 13 respectively take the logic state “1” and the logic state “0” in response to each rising edge of the signal applied to its input S, and respectively take the logic state "0” and the logic state "1” in response to each rising edge of the signal applied to its R input.
  • a first input of the OR gate 14 is connected to the Q output of a simple, non-reversible counter 15.
  • This counter 15 consists in this example of five flip-flops connected in series in a conventional manner so its output Q, which is the direct output of its fifth rocker, goes from state "0" to state "1" when its content goes from the value fifteen to the value sixteen.
  • the counting input C of the counter 15 is connected to the output Q2 of the frequency divider 10 and therefore receives the signal SC, and its reset input R is connected to the inverse output Q of the flip-flop 13.
  • the counter 15 is sensitive to the rising edges of the signal applied to its count input C, and its content is kept at zero as long as its input R is at logical state "1".
  • the servo circuit 7 also includes electrical braking means of the rotor 3a of the generator 3, which are constituted in the present example by a n-type MOS transistor, designated by reference 16, whose source and drain are respectively connected to terminals B1 and B2 of generator 3, and whose grid is connected to the direct output Q of the flip-flop 13.
  • the transistor 16 is blocked or conductive depending on whether its grid is the logical state "0" or "1" since it is of type n and that its source is at reference potential.
  • the servo circuit 7 also includes a initialization circuit 17 having two connected inputs respectively at terminals 5c and 5d of rectifier 5 and a output connected on the one hand to the reset inputs R of the frequency divider 10 and reversible counter 11 and, on the other hand, at the second entrance to OR gate 14.
  • This initialization circuit 17 will not be described in detail because it can be achieved in various ways well known. It will simply be mentioned that it is arranged so that its output produces a short pulse initialization at the moment when the voltage Ua reaches in increasing a determined threshold value, which is equal or slightly higher than the value for which the various other components of the servo circuit 7 start to function properly. This moment will be called initialization time t0 in the rest of this description.
  • the pulse produced by the initialization circuit 17 causes the reset to zero of frequency divider 10 and reversible counter 11, so that the outputs Q1 and Q2 of the divider of frequency 10 and the output Q of the reversible counter 11 are put in the logical state "0".
  • the logic state "0" of the output Q of the flip-flop 13 puts the transistor 16 in its blocking state, so that the coil 3b of the generator 3 is not short-circuited and that the speed of rotation of the rotor 3a can reach and exceed the set speed Vc.
  • the logic state "1" of the output Q of flip-flop 13 maintains the content of counter 15 at zero.
  • timepiece 1 after time t0 will only be described below in its major lines because the skilled person will have no trouble reconstruct all its details using the explanations already given.
  • the content of the reversible counter 11 is constantly representative of the difference between the number of SR signal pulses produced by the frequency divider 10 from time t0 defined above and the number of SM signal pulses produced by comparator 8, which is the number of complete turns performed by the rotor 3a of the generator 3, from the same instant t0.
  • This content of the counter 11 is therefore also permanently representative of the delay or advance of the rotor 3a with respect to its theoretical angular position, this delay or advance which may be, if applicable, several rounds.
  • the Q output of the reversible counter 11 is in logic state "0", so that the output of the gate AND 12 remains in state "0" and that the flip-flop 13 remains in the state where its output Q is in the logic state "0".
  • the transistor 16 remains blocked, and the coil 3b of the generator 3 not being short-circuited, the speed of rotation of the rotor 3a can remain or, where appropriate, tend to become greater than the set speed Vc, at condition of course that the barrel spring 2 is still sufficiently armed.
  • the output Q of the counter 11 is in the logic state "1".
  • the signal SM then also being in the state "1", the flip-flop 13 takes the state where its outputs Q and Q are in logical state "1" and in logical state "0" respectively.
  • the transistor 16 becomes conductive and short-circuits the coil 3b of the generator 3.
  • the rotor 3a is therefore braked, and its speed of rotation becomes lower than the set speed Vc.
  • the flip-flop 13 then resumes the state where its outputs Q and Q are in logical state "0" and in logical state "1" respectively.
  • the transistor 16 is therefore again blocked, so that the rotor 3a is no longer braked and that its speed of rotation may increase again.
  • circuit formed by doors 12 and 14, flip-flop 13 and counter 15 constitute a circuit for limitation of the braking duration of rotor 3a to one specified fraction, 1/8 in this example, of the period of the voltage Ug supplied by the generator 3.
  • this result is obtained by not braking the rotor 3a, when it is ahead with respect to at its theoretical angular position, that during periods of limited duration, significantly less than the time averaged by the rotor 3a to make a complete revolution.
  • this duration of the periods of braking which is determined by the frequency of the SC signal and by the number of flip-flops forming the counter 15, is about eight times shorter than the rotation period mean of rotor 3a.
  • each of these braking periods begins to a moment when the voltage Ug is zero anyway, and their duration is only a relatively small fraction of the period of this Ug tension as we have just seen.
  • Ug voltage would therefore only have relatively low value if coil 3b was not short-circuited, and generator 3 would not provide anyway that a very low energy or even null, to rectifier 5.
  • the Ug voltage has its normal value, so the amount of electrical energy supplied by generator 3 is almost not diminished, or even not at all, by braking the rotor 3a.
  • the generator 3 continues to supply the electrical energy required to operate the servo circuit 7 even when the rotor 3a is in ahead of its theoretical angular position and that it is braked as described above, regardless of the size of this advance.
  • the rectifier filter capacitor (s) 5 can therefore have relatively low capacities, since they do not need to provide supply to the servo circuit 7 for long periods like this is the case in the room of known watchmaking described in patent US-A-3937001 mentioned above.
  • the removing this resistance has the advantage that the braking of the rotor 3a is more effective, which allows increase the maximum permissible engine torque for the barrel spring 2 and therefore increase the autonomy of timepiece 1.
  • the generator rotor of a timepiece can include, instead of the bipolar magnet of the rotor 3a of the generator 3 described above, a permanent magnet multipolar, i.e. a plurality of permanent magnets bipolar arranged on the periphery of a disc.
  • the alternating voltage produced by the coil of this generator has a period which is equal to the ratio between the rotor rotation period and the number of pairs of poles of the multipole magnet or, respectively, the number of bipolar magnets.
  • the period of this measurement signal is half that of the alternating voltage produced by the generator, and the rotor of this generator is braked twice per period of this tension alternative when it is ahead of its theoretical angular position. It can then be necessary to reduce the duration of braking periods of this rotor to prevent the electrical energy supplied by the generator does not become insufficient to supply suitably the electronic circuits of the room of watchmaking.

Claims (2)

  1. Uhr, umfassend:
    einen Generator für elektrische Energie (3), welcher einen Rotor (3a) und Mittel (3b) zum Liefern dieser elektrischen Energie in Ansprache auf eine Rotation des Rotors (3a) enthält;
    eine Quelle mechanischer Energie (2), die mit dem Rotor (3a) mechanisch gekoppelt ist, um die Rotation des Rotors (3a) mit einer Geschwindigkeit auszulösen, die oberhalb einer vorbestimmten Einstellgeschwindigkeit liegt; und
    Mittel (7) zur Regelung der Rotationsgeschwindigkeit des Rotors (3a) auf die Einstellgeschwindigkeit, die durch die elektrische Energie versorgt werden und
    an den Generator (3) gekoppelte Meßmittel (8) zur Erzeugung einer Vielzahl von Meßimpulsen, wobei jeder der Meßimpulse in Ansprache auf einen Durchgang des Rotors (3a) durch eine vorbestimmte Winkelposition erzeugt wird, um die tatsächliche Winkelposition des Rotors zu bestimmen;
    Referenzmittel (9, 10) zur Erzeugung einer Vielzahl von periodischen Referenzimpulsen mit einer Periode, die gleich der der Meßimpulse ist, wenn der Rotor (3a) mit der Einstellgeschwindigkeit rotiert, wobei die Referenzimpulse für die theoretische Winkelposition des Rotors repräsentativ sind;
    Vergleichsmittel (11) zum Liefern eines Vergleichssignals umfassen, welches für die Differenz zwischen einer ersten Zahl, die die Zahl der nach einem bestimmten Anfangszeitpunkt erzeugten Referenzimpulse ist, einerseits und einer zweiten Zahl, die die Zahl der nach dem Anfangszeitpunkt erzeugten Meßimpulse ist, andererseits repräsentativ ist, wobei das Vergleichssignal einen ersten oder einen zweiten Zustand hat, je nachdem, ob die erste Zahl kleiner oder größer als die zweite Zahl ist; dadurch gekennzeichnet, daß die Uhr darüber hinaus:
    auf ein Steuersignal ansprechende Bremsmittel (16) zur Ausübung eines Bremsmoments auf den Rotor (3a) umfaßt, die dem Rotor (3a) eine Rotationsgeschwindigkeit auferlegen, die unterhalb der Einstellgeschwindigkeit durch einen Kurzschluß der Mittel (3b) zum Liefern der elektrischen Energie liegt, und daß die Mittel zur Regelung (7) außerdem Steuermittel (12, 13, 15) umfassen, die auf jeden der Meßimpulse ansprechen, wenn das Vergleichssignal im ersten Zustand ist, um das Steuersignal in Form eines Steuerimpulses zu erzeugen, welcher eine vorbestimmte begrenzte Dauer derart hat, daß das Bremsmoment auf den Rotor (3a) nur ausgeübt wird, bis letzterer bezüglich der theoretischen Winkelposition vorgehend ist.
  2. Uhr nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zur Regelung (7) darüber hinaus einen Initialisierungsschaltkreis (17) zur Bestimmung eines Initialisierungszeitpunkts in dem Zeitpunkt, wenn die durch den Generator (3) gelieferte elektrische Energie einen vorbestimmten Schwellenwert erreicht, der gleich oder größer als der Wert ist, bei dem die Mittel zur Regelung (7) korrekt arbeiten, umfassen.
EP95105590A 1994-04-25 1995-04-13 Uhr mit mechanischem Antrieb und mit elektronischer Steuerung Expired - Lifetime EP0679968B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01266/94A CH686332B5 (fr) 1994-04-25 1994-04-25 Pièce d'horlogerie mué par une source d'énergie mécanique et régulée par un circuit électronique.
CH1266/94 1994-04-25

Publications (2)

Publication Number Publication Date
EP0679968A1 EP0679968A1 (de) 1995-11-02
EP0679968B1 true EP0679968B1 (de) 1998-07-08

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EP95105590A Expired - Lifetime EP0679968B1 (de) 1994-04-25 1995-04-13 Uhr mit mechanischem Antrieb und mit elektronischer Steuerung

Country Status (8)

Country Link
US (2) US5517469A (de)
EP (1) EP0679968B1 (de)
JP (1) JP3103293B2 (de)
CN (1) CN1086813C (de)
CH (1) CH686332B5 (de)
DE (1) DE69503306T2 (de)
HK (1) HK1013689A1 (de)
TW (1) TW262543B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806710A1 (de) 1996-05-07 1997-11-12 Asulab S.A. Stabilisation einer elektronischen Schaltung zur Regelung des mechanischen Gangwerks einer Zeitmessvorrichtung

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US5668414A (en) * 1994-07-04 1997-09-16 Seiko Epson Corporation Spring driven electricity generator with a control circuit to regulate the release of energy in the spring
CH688879B5 (fr) * 1995-08-10 1998-11-13 Asulab Sa Pièce d'horlogerie avec indication de la réserve de marche.
CN1119720C (zh) * 1995-09-07 2003-08-27 咨询及生产Vlg股份有限公司 钟表的运行机构
US6169709B1 (en) 1995-09-07 2001-01-02 Konrad Schafroth Watch movement
FR2752070B1 (fr) * 1996-08-01 1998-09-18 Asulab Sa Piece d'horlogerie electronique comportant une generatrice entrainee par un barillet a ressort
CH690523A5 (fr) * 1996-12-09 2000-09-29 Asulab Sa Pièce d'horlogerie comportant une génératrice d'énergie électrique.
TW351782B (en) * 1997-04-28 1999-02-01 Asulab Sa Electronic timepiece supplied by a generator driven by a mechanical power source
DE69712034T2 (de) * 1997-04-28 2002-11-21 Asulab Sa Elektronisches Uhrwerk gespeist von einem Generator, der durch eine mechanische Energiequelle angetrieben wird
US6863435B2 (en) 1997-08-11 2005-03-08 Seiko Epson Corporation Spring, mainspring, hairspring, and driving mechanism and timepiece based thereon
JP3498315B2 (ja) * 1997-08-28 2004-02-16 セイコーエプソン株式会社 バネ、ゼンマイ、これらを利用した駆動機構、および時計
JP3006593B2 (ja) * 1997-09-30 2000-02-07 セイコーエプソン株式会社 電子制御式機械時計およびその制御方法
DE69835940T2 (de) * 1997-09-30 2007-05-10 Seiko Epson Corp. Elektronisch gesteuerte mechanische uhr und steuerungsverfahren dafür
US6795378B2 (en) 1997-09-30 2004-09-21 Seiko Epson Corporation Electronic device, electronically controlled mechanical timepiece, and control method therefor
US6314059B1 (en) 1997-09-30 2001-11-06 Seiko Epson Corporation Electronically controlled, mechanical timepiece and control method for the same
JP3908387B2 (ja) * 1997-09-30 2007-04-25 セイコーエプソン株式会社 電子制御式機械時計およびその制御方法
EP0942340B1 (de) 1997-09-30 2006-09-20 Seiko Epson Corporation Drehkontrollvorrichtung und drehkontrollverfahren
US6603236B2 (en) 1998-01-22 2003-08-05 Seiko Epson Corporation Electronic timepiece
DE69941974D1 (de) 1998-11-17 2010-03-18 Seiko Epson Corp Elektronisch gesteuerte mechanische uhr und herstellungsverfahren dafür
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US5740131A (en) * 1996-05-07 1998-04-14 Asulab S.A. Stabilising of an electronic circuit for regulating a mechanical movement of a timepiece

Also Published As

Publication number Publication date
EP0679968A1 (de) 1995-11-02
HK1013689A1 (en) 1999-09-03
JP3103293B2 (ja) 2000-10-30
DE69503306T2 (de) 1999-03-04
DE69503306D1 (de) 1998-08-13
TW262543B (de) 1995-11-11
CN1086813C (zh) 2002-06-26
CN1122920A (zh) 1996-05-22
CH686332B5 (fr) 1996-09-13
JPH0850186A (ja) 1996-02-20
US5517469A (en) 1996-05-14
USRE36733E (en) 2000-06-13
CH686332GA3 (fr) 1996-03-15

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