JPS5932756B2 - Quartz crystal clock with analog time display with manual time change device - Google Patents

Abstract

In the quartz watch according to the invention all the time displaying hands (of the hours, the minutes and, possibly, the seconds) are kinematically permanently connected to each other, so that their relative positions are precisely fixed, whatever manipulations are made by the user. As shown, the rotor 7 of a stepping motor drives seconds wheel 16 driving a wheel 20 (on the minutes hand shaft 23) driving hour wheel 28. A clutch may be provided between the rotor and the seconds wheel. Pulling out a stem 64 to a hand setting position energises automatic hand setting control circuitry having a detector sensitive to the manually controlled displacements of the hands and a counting device for finishing off these displacements and for memorizing the time impulses during the manual correction. The arrangement ensures automatic setting of the hands in the exact time indicating positions, thus permitting a user who travels from one time zone to another to make rapidly the necessary manual adjustment without prejudice to the previous precision of the time indication. Accurate setting of a seconds hand may also be provided. <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a quartz crystal clock with an analog time display consisting of a manually controlled time changing device.

More particularly, the watch electronics contemplated herein include an oscillator operating at a precisely regulated frequency, controlled by the oscillator, and outputting an output at a frequency that is a submultiple of the frequency of the oscillator. a frequency divider for generating impulses; a bidirectional motor having its coil connected to the output of the frequency divider;
and a switch that cuts off motor excitation when the switch is actuated.

The mechanical device further includes a wheel train which is rotated by the low rotation of the motor and which operates the pointer of the display device, a manual setting mechanism, and a shaft which operates both the manual setting mechanism and the switch when the mechanism is in a predetermined axial direction. It consists of a manually operated crown designed for directional and rotational movement.

With known watches of this type, the manual setting mechanism is similar to that of conventional mechanical watches.

The minute hand is carried by a snap-on pinion.

If the watch also includes a seconds hand, the positions of the minute and second hands will generally not be coordinated, since manual setting of the hands usually has an effect only on the watch and minute hands.

The differences thus occurring between the positions of the hands constitute a difficult failure to make the clock accurate, as in a quartz crystal clock.

Some known clocks of this type that have been invented make it easy for the watch user to change the time from one time zone to another, or if the user lives in a country that implements a special daylight saving time. Designed to be modified.

For that purpose, the known clock consists of two hour wheels,
One of them is driven by the Hinokana that meshes with the Tsutsukana.
The other one carries a clock and meshes with a correction wheel connected to a manually operated control member.

One of the two hour wheels is provided with a circular row of twelve holes, and the other has a dome-shaped projection that enters one of the holes.

Usually, the two hour wheels are pressed against each other by a spring so that they rotate together.

By means of the control member, however, it is possible to cause the hour wheel carrying the hour hand to rotate independently.

One of the two hour wheels is therefore axially movable, thus first moving said domed projection out of the hole in which it is engaged and then until it is opposite the other hole in said row.

However, independent rotation of the hour hand creates further differences between each position of the different hands.

Manual time changing in known quartz crystal watches has further drawbacks.

Corrections are thus made by means of a manual setting crown, and by simply pulling the crown into the manual setting position, each connection between the mechanical and electronic components of the watch is broken, the electronics operating but not driving the hands. .

That is, a manual time change is in this case just the result of a loss of time display.

In a watch where the hour wheel can be replaced individually, when the hour wheel driven by the correction wheel disengages from it, it applies torque to the other hour wheel due to the torque of the motor coil of the rotor. .

That is, instead of rotating the hour hand and its hour wheel alone, the other hour wheel follows it slightly, while driving the entire time train and the motor's locomotion so that the watch is no longer accurate after making the correction. do not display the correct time.

A watch according to the invention also allows the time to be changed when traveling from one time zone region to another or when seasonal times change, while maintaining the accuracy of the time displayed by the watch. Make it.

The watch according to the invention eliminates any inaccuracies in time display.

The hour wheel ensures that the minute hand is always positioned precisely above the time division markings whenever it is above ' It always comes down to exactly one division of the scale.

For these purposes, the timepiece of the invention has a permanent kinematic connection between all hands, sensitive to each manual rotation of the hands and corresponding numerically and indicatively to each rotational amplitude and direction of said hands. An integer number corresponding to a rotation of the pointer equal to the shortest time change that occurred upon receiving an impulse created by both said frequency divider and said detection circuit when the impulse-emitting detection circuit crown is in the manually set position. A recorder for measuring said impulses in harmonic units, characterized in that said recorder rapidly transmits all recorded impulses to the motor when the manually set crown is pushed into its rest position at the end of the correction. shall be.

The kinematic coupling that exists between the hands extends to all rotating parts of the watch that are driven by the motor, including the motor's locomotion.

Such a design has the advantage of simplifying the watch mechanics.

In order to enable the normal setting of the hands without complicating the mechanical system of the watch, its electronics are designed such that the total value recorded by the recording circuit is an absolute value and that the total value recorded by the recording circuit is in absolute value when the crown leaves the manual setting position. It has the advantage of having a decoder which is activated only if more than half the coefficient is exceeded, and the impulses recorded by the recording circuit are transmitted to the motor only if the corrections made activate the decoder.

Two embodiments of the invention will now be described in detail with reference to the accompanying drawings.

The watch electronics according to the first embodiment consists of a conventional oscillator 1 led by a crystal.

These oscillate at a frequency that is adjusted with very high precision by a trimmer 3.

The oscillator 1 is connected to a conventional frequency divider 4 which steps down the impulses emitted by the oscillator to a relatively high frequency of IHz.

As in known quartz watches, the frequency divider 4 thus regularly transmits one pulse per second into a circuit 5 containing the coil 6 of a bidirectional motor that drives the watch's mechanics, provided for the time display. do.

The mechanical device consists of a wheel train driven step by step every second by the rotor 7 of the motor.

The gear train consists of a reduction gear consisting of a gear 8 that meshes with a pinion 9 rigidly fixed to the shaft of the rotor 7. It consists of a rigidly fixed pinion 10.

Gearwheel 8 and pinion 10 each carry a crown gear 12,13.

The two gears constitute a cannula. A mainspring 14, normally carried on a disk 15 rigidly fixed to the stem 11, presses the gear 8 against the pinion 10 and meshes the gears 12, 13 with each other so that the reduction gears 8, 10 move as a single piece. Make it.

The pinion 10 itself meshes with a fourth gear 16 fixed on a shaft 17 carrying a second hand 18.

A fourth pinion 19 fixed to the fourth gear 16 meshes with the fourth pinion 19, and drives the second gear 20 through a third gear 21 having a pinion 22 that meshes with the second gear 20.

The second gear is coaxial with the shaft 17 and is fixedly mounted on the hollow vacuum 23 carrying the minute hand 24.

A gear 25, which serves as a conventional pinion, is also fixed to the stem 23.

The gear 25 meshes with the Hi-no-ura wheel 26, and the Hi-no-ura kana 27
meshes with the hour wheel carrying the hour hand 29.

From the above it is clear that there is a permanent kinematic connection between the three points 18, 24, 29.

That is, the three points mentioned above always move in unison in each case.

The gear train detailed is not intended to transmit more force than is required to overbalance the bearing friction of its rotating parts, and the gears therein can be designed with very little play, thus ensuring accurate timing. Guarantee display.

Therefore, the hour hand 29 corresponds exactly to the time display 30 on the dial 31 every time the minute hand 24 is 160" above.

Similarly, the minute hand 24 is exactly opposite one graduation 32 of the minute scale on the dial 31 every time the second hand 18 is opposite itself ``X60''.

The conventional manual setting mechanism has a crown 3 fixed to the winding stem 34.
3 allows manual rotation of the hands 18, 24, 29.

When the crown 33 is pulled from its rest position (solid line in FIG. 2) to position I (shown in dotted lines), the user creates a kinematic connection between the crown 33 and the Hinokurisha 26, which is well known to those skilled in the art.
Create between 35 small iron cars that mesh with each other.

When the crown 33 and winding stem 34 are in position I, the lever 36
The arm falls into the recess 37 of the winding stem 34.

Lever 36 has a forked end 38 which then moves gear 8 axially against the action of spring 14 until gear 12 disengages gear 13 as shown in FIG.

The watch operating device is then disengaged from the rotor 7 of the motor.

On the bearings on the gearwheel 8, the forked ends 38 act simultaneously as a brake during the time that the crown 33 remains in position I, thus keeping the rotor immobile.

Upon falling into the recess 37, the arm of the lever 36 also closes the switch 39, overcoming actuation as described below.

A disc 40 is used to maintain the working connection between the mechanical and electronic devices of the watch when the actuating device is disengaged from the motor.
is rigidly connected to the fourth gear, the gear that carries the second hand.

The disc is provided with 60 grooves 41 on its periphery.

The groove 41 moves opposite an optical instrument consisting of a light source 42 and two photosensitive diodes 43.

One of the diodes 43 counts the number of grooves 41 passed in front of the light source 42 during manual correction, and the other diode 43 counts the number of grooves 41 passed in front of the light source 42 during manual correction, and the other diodes 43 count the number of grooves 41 passed in front of the light source 42 during manual correction. Move the guidelines accordingly.

In addition to the conventional components already detailed, FIG.
It includes a counting circuit 44 coupled to the instrument end 42, 43, and still includes a detection circuit 45 transmitting its readings to the counting circuit 44.

Said electronic components 44,45 are normally not operated.

However, as mentioned above, when the switch 39, which is activated when the crown 33 is pulled to the position ①, is closed, the electronic component 44,
Activate 45.

Closing of switch 39 affects frequency divider 4 and counting circuit 44 through line 46.

Said operation on frequency divider 4 creates a deviation of the impulses which would normally be transmitted by the frequency divider directly through line 47 to circuit 5, counting circuit 44 and line 48.

The actuation of the counting circuit created by closing switch 39 causes its inputs a and b to open, while its output C remains closed.

Regarding the actuation of the detection circuit 45 by means of the switch 39, which apparently causes the actuation of the instrument end 42.43, it is the input of the counting circuit 44 through the line 49 that is caused by a moving disc in front of the instrument end 42.43. A number of impulses equal in absolute value to the number of 40 grooves 41 are transmitted.

Thus, when the crown 33 is pulled into position I, it is mechanically coupled to the working part of the watch.

The actuating part is decoupled from the motor, which is made mechanically stationary.

The motor coil 6 has a counting circuit 44 that stores impulses.
It no longer receives any impulses from the frequency divider 4 which sends impulses to.

Finally, the detection circuit 45 and its instrument end 42,43 are now activated.

Then by rotating the crown, the hands 18, 24, 29 all move in unison, the instrument end 42, 43 counts the groove 41 of the disc 40 passing through its front, the detection circuit 45 is connected to the counting circuit 4.
Send an equal number of impulses through lines 49 to input b of 4.

The signal produced by the second diode 43 of the detection circuit 45 indicates to the counting circuit 44 whether said impulse is to be added to or subtracted from that received at input a.

The counting circuit 44 thus creates an algebraic sum of the impulses received at its forces a and b.

It is the combination of the design that discloses its mechanical device, in particular the permanent kinematic coupling provided between the hands, that guarantees the accuracy of the change of time indicated throughout the time. Element 44.45.

Counting circuit 44 therefore creates a sum indicated by the value 3600 by a factor equal to the number of seconds in an hour, ie, time units per hour indicated by the second hand.

If a time delay is ensured only by the hour and minute hands, and the latter advances, for example, to three steps-minutes, the factor by which the counter connected to the frequency divider 4 should operate will be equal to 60.times.3=180.

By matching coefficient ac! When adding the impulses received at ::b, the given divisor simply returns to zero each time the counting circuit registers a number of impulses equal to the coefficient, i.e. 3600 in the embodiment shown in the drawing. .

For example, if the user of a watch wants to change the time shown on his watch by exactly three hours, and for that purpose if he When crown 33 is pulled to position I, the clock reads 5:02.
For example, keep the hands on the needle for 3 hours, 5 minutes, and 3 until it shows 9 minutes and 12 seconds.
When it is turned back for 1 second, the detection circuit 45 outputs 1 to the counting circuit 44.
Sends 1,131 impulses.

However, the counting circuit does not record the number, but
1 second, i.e. 11, which is the number corresponding to the inaccuracy of manual correction.
Record 131-3X3600=331.

For ease of operation, the counting circuit 44 consists of a transducer which changes the sign of the recorded impulses each time it records half its coefficient, ie the same number of impulses as 1800 in the disclosed example.

Therefore, when the hands are advanced by the crown 33, the counting circuit 44 continuously records -1, -2, -3 and -1800 during the first 30 minutes.

The sign of the impulse counted at that time changes, and when the pointer advances further in the same direction, the counting circuit 44 continuously calculates +1799, +1 when the pointer has rotated for exactly one hour.
798.

+1797. ...Record +3, +2, +1, O.

If the user advances the pointer further in the same direction, the counting cycle starts again from -1 to -1800 and then from +1799 to 0 for the next hour.

If, after pulling the crown 33 to position I, the hands are moved back in the opposite direction, the impulses transmitted to the input of the counting circuit 44 will then register continuously +1, +2, +3°...+1
798, 1799, 1800, -1799°1798
, . . -2, -1, 0, +1, +2 and so on.

In the modification shown above, the impulses received at all inputs of the counting circuit 44 are recorded in the counting circuit by a record -331.

At the end of manual correction, push the crown 33 into the rest position.

That operation creates an output C of the counting circuit 44.

However, the usual direct impulse circuit (oscillator 1, frequency divider 4, circuit 5) has not yet been developed.

The circuit remains closed as long as the counting circuit 44 is not empty, eg, has not returned to zero.

Frequency divider 4 thus further transmits its impulses via line 47 to counting circuit 44 .

In the correction example described above, assuming that the correction lasts 17 seconds, e.g. 17 seconds elapses from the time the crown is pulled into position I until it is pulled to the rest position, the counting circuit 44 will be receive impulses.

As mentioned above, the counting circuit records the algebraic sum of the impulses received at the two inputs a and b.

In the considered embodiment, the counting circuit thus counts +17-331 when the crown 33 is pushed into its rest position.
=314 is recorded.

The subsequent opening of the output C of the counting circuit 44 makes it possible to rapidly transmit from the counting circuit into the circuit 5 of the motor a number of impulses equal to the sum recorded by the counting circuit.

In the example considered above, the watch has a crown of 33
2:23:41 was displayed when I pulled it to position I to turn the pointer to advance the time by 3 hours.

That is, the time to be displayed was 5:23:41.

At the end of the adjustment, after 17 seconds and when the crown 33 is pushed into its rest position, the exact time is 5:23:58.

As assumed above, however, the clock read 5:29:1.
Indicates 2 seconds.

The counting circuit which recorded the total of -314 impulses thus immediately injects a 314 impulse into circuit 5 of the motor with a polarity that causes the motor to rotate in the opposite direction.
4 seconds = 5 minutes and 14 seconds back.

After inputting the impulse, the clock read 5:29:12-5.
Minutes 14 seconds - 5 hours, 23 minutes and 58 seconds, which means the watch now shows the correct time, changing exactly by three hours without compromising the accuracy of the time it previously showed.

In practice, the counting circuit 44 does not instantaneously inject into the motor circuit the impulses recorded during manual correction.

The rapidity of said dosing depends on the power of the motor.

A conventional motor receives about 30 impulses per second.

In the considered example, the injection of 314 impulses thus lasts on the order of 10 seconds.

The 10 impulses emitted by the current quantity divider are therefore led to a counting circuit 44, which adds the impulses algebraically to the previous total, so that when the crown 33 is pushed into the rest position it is 5:23. After 10 seconds or so, the clock will again display the correct time and the impulses will once again be transmitted directly from the frequency divider 4 into the circuit 5 of the motor.

Due to the above-described design, the crown 33 is unable to carry out the normal setting of the watch, as can happen if for whatever reason the watch no longer shows the correct time and the watch is stopped during a battery change.

It is envisaged that the second operating position of the crown 33, however, allows setting the date displayed in the window 50 of the dial 31.

Different steps can be provided so that the clock can be set to the correct time.

The circuit of the switch 39 is opened by a deactivated pusher, for example, if a reaction of the watch's mechanical system on the electronic device is not desired during the correction of the position of the hands by means of the crown 33.

Means may also be provided for not actuating the switch 39 when the crown 33 is pulled to position I when the second hand is, for example, above 160''.

Alternatively, electronic means may be provided to supply the motor with a rapid train of impulses when the switch 39 is opened by pushing the crown into its rest position, said impulses rapidly rotating the seconds hand up 160"; The gear carrying the second hand is then shut off until the next time setting by a contact that closes when the second hand is above 160".

Electronic engineers can easily install the counting circuit 44 and decoder circuit 45.
will invent another solution along with a circuit for.

A detailed description of the circuit is therefore omitted. The present invention is not limited to making it possible to change the time only throughout the entire time period, but also relates to a clock that allows changing the number of minutes of an hour, for example 3 to 3 for the time in a 24 ideal time zone.
This is when countries that use 0 minutes or 15 minutes are taken into account.

The clock according to the second embodiment (FIGS. 4 and 5) can change the time by 15 minutes.

Parts of the watch that are identical to those of the first embodiment are designated by the same reference numerals and will not be described in detail hereinafter.

This second preferred embodiment differs from the first embodiment in that its mechanical arrangement is simpler.

The reduction gear connecting the rotor pinion to the fourth gear 16 simply consists of a pinion 8a rigidly fixed to the pinion 10a.

Therefore, the rotor 7 always rotates in unison with all the hands when the hands are turned by hand.

The braking action with the above connection has the advantage that it is easier to make accurate time corrections by hand.

Furthermore, during manual time correction the connection between the mechanical and electronic devices of the watch is ensured by the disc 51 carrying the nose 52.

When the disc 51 rotates, its nose 52 is connected to the detection circuit 57 (
Three contacts 53 on the instrument end 56 forming part of FIG.
．． 54 and 55 are operated continuously.

Contacts 53.54.55 close the circuit of lines 58, 59, and 60, respectively.

If contact 55 is closed after contact 53, detection circuit 57 emits an impulse in line 61 indicating to controller 62 that the hand is rotating clockwise.

The closing of contact 54 after the closing of contact 53 on the other hand creates an impulse through line 63 to control device 62 indicating counterclockwise rotation of the pointer.

As is well known to those skilled in the art, the manual rotation of the pointer is performed by using the winding stem 6 which engages the small iron wheel 35 and the knob wheel 65 by means of a bolt 66.
4 by the crown 33 (FIG. 5).

The cannula 66 consists of a nose 67 which actuates contacts 68 in the manual setting position to charge the line 69 (FIG. 5) and energize the control device 62.

The above excitations have different effects.

First, the impulse of the frequency divider 4 is transferred to the motor 71 by excitation.
The line 70 that was passed directly through is shut off.

The impulses of the frequency divider 4 then open a line 72 for reaching the seconds counting circuit 73 and, if necessary, the minutes counting circuit.

The elbow number circuits 73 and 74 function as memory circuits.

Furthermore, the energization of the control device 62 causes a rapid train of impulses to be generated in the motor 71, which is only shut off by the closing of the contacts 53.

Contact 53 is closed when second hand 18 is above 160".

When crown 33 is in the manual setting position,
Whatever the displacement of , the control device 62 thus always returns the second hand quickly towards the character 60''.

Finally, the energization of the controller 62 still activates the auxiliary counting circuit, which also functions as a memory circuit.

An auxiliary counting circuit 75 calculates from line 76 the number of impulses that the controller 62 must supply to the motor 71 in order to advance the seconds hand toward 960'' from the position it is in when the crown 33 is pulled to the manual setting position. Record.

The auxiliary counting circuit 75 thus controls the second hand 1 at the beginning of manual correction.
Memorize the position of 8.

The impulses that the control device receives from the detection circuit 57, i.e. for each revolution of the second hand, are passed through line 77 to the minute counting circuit 78 where the matching module 15 records the impulses.
sent to.

Similarly in the first embodiment, the minute counting circuit 78 is equipped with a converter, so that when the hands rotate back and forth, they continuously read -1, -2, -3, . . . -6, etc. −7°+7
．． +6...+3, +2, +1, 0, -1. -2
°-32, etc., or +1. +2. ...+6. +7. −
Record 7°-6,...-2, -1, O, +1, +2, etc.

When the crown is pushed back into its rest position, at the end of the manual adjustment, the control device 62 is reactivated by the decoder 79 sounding through the circuit 80.

If the decoder is at the O value, the controller 62 transmits an instruction to all the counting circuits over line 81 so that they return to zero.

That means the pointer has been rotated by less than 71/2 minutes.

The watch user clearly had no intention of changing the time shown on his watch.

Manual corrections are made to reset the clock to the correct time.

Since all counting circuits are zeroed by the control device 62,
The pointer would normally be driven by impulses from divider 4 to motor 71 through line 70 from where the pointer would be.

Conversely, if decoder 79 is a logical 1, the controller accounts for the modification made as a time change or time zone change.

It then communicates an instruction via line 82 to counting circuit 78 to transmit its total value to motor 77 via line 83.

If this total value is, for example, -6, the minute counting circuit 78 transmits 6.times.60-360 impulses to the motor 71 which cause the motor to rotate back exactly six minutes.

As soon as the controller 62 determines that the counting circuit 78 is empty, it sends its contents to the auxiliary counting circuit 75 via line 84 to the motor 7 via line 85.
Give instructions to communicate to 1.

This will return the second hand to the position it occupied before the correction.

Finally, after confirming that the counting circuit 75 is empty, the control device 62 sends an instruction to the counting circuits 73, 74 via a line 86 to transmit the contents of the counting circuits 73, 74 to each other to the motor 71 via lines 87 and 88. give to

The impulses coming from the frequency divider 4 follow the line 72 as long as the counting circuit 73, 74 has not gone to zero, which causes the display to recover the rest time during correction.

Or, more precisely, the time period during which the crown 33 was in the set position is restored.

As soon as the counting circuit 73, 74 is empty, the control device 62
restores line 70 and the display is normally driven at the new time.

Assuming that the same corrections are to be made as described above, the watch user could change the clock to 2:23 in order to advance the hand by 3 hours.
When pulling crown 33 at minute 41, controller 62 immediately sends 19 impulses to motor 71, thus causing the hands to display 2:24:0.

At the same time, the auxiliary counting circuit 75 goes from "0" to 119".

Regarding the impulses emitted by the frequency divider 4, a counting circuit 73 records the impulses, where they are stored.

Now, when the watch user turns the crown and sets the hands to 5:29:12, the control device 62 further advances the hands to 5:30:0.

The 48 impulses transmitted to motor 71 while making the last pointer change are not recorded anywhere.

Since the contact 53 is closed 186 times during the considered change, the counting circuit 78 received 186 impulses.

The impulses are counted by the coincidence module and
The absolute value of 86 impulses is 186-12X15=6
Activate the counting circuit.

Since there is a converter in the counting circuit, what is actually recorded is a value of -6''.

Finally, the crown remains in the set position for 17 seconds as in the example disclosed with reference to the first embodiment, so that the seconds counting circuit 73 is then on "17" and the minutes counting circuit 74
appears to be present at 10 when the crown is pushed to its rest position.

The performed rotation of the pointer causes the decoder 79 to have a logic value of "1".
Make it.

As soon as the user presses the crown, the control device 62 first disables the minute counting circuit 78, which resets the hands by six minutes.

The hands then display 5:24:0.

Auxiliary counting circuit 75 is then released.

The counting circuit rotates the motor backwards by 19 steps,
The hands will display 5:23:41.

Finally, the control device 62 releases the counting circuits 73, 74,
The circuit sends one impulse to the motor 71 and five pulses to the pointer, as in the example described above with reference to the first embodiment.
It rotates to point to the hour 23 minutes 58 seconds.

Considering this example (2:23:41), if the watch user decides to reset the date displayed on his watch instead of changing the time, and he resets the crown to its manual setting. If he accidentally pulls the crown 3
All you have to do is turn 3 and move the pointer to notice the error.

The erroneous operation need not, however, involve a loss of the correct time of the clock that his watch previously indicated.

He only has to turn the hands further until they read 2:10 or 2:40 and then push the crown into its rest position.

The effect of said processing is that the clock will show a new time that differs from the previous time by exactly 15 minutes.

After said correction, the watch user pulls the crown back to its manual setting position and turns the hands until they display a time approximately consisting of between 2:20 and 2:25.

By pushing the crown back into its rest position, his watch is reset to its original precise time in a fully automatic manner.

Setting the watch to the correct time is achieved by automatically setting the second hand to 160 as soon as the crown 33 is pulled into its manual setting position.
“Since it rotates upward, it can be easily done in the second embodiment.

The watch user thus only has to look at the minute hand when he sets the time.

In order to set the time when the battery needs to be replaced, the electronics of the watch are activated by a decoder 79, in any case where the first hand rotation is made after recharging the circuit.
can be easily designed so that it remains at a logical value O.

In order to prevent the minute counting circuit from registering one impulse too many if the watch user first turns the hand in the wrong direction to change the time, there is a device immediately adjacent to the contact 53. The contacts at end 56 are preferably arranged so that the instrument end transmits an impulse to the control device and thus to the minute counting circuit as soon as the hand is turned by hand.

In this way, an initial rotation of the pointer in the wrong direction is always compensated for when turning the pointer in the correct direction.

For the same purpose, the user may also use, in a modification of the second embodiment, two slats placed on each finger frictionally set on the winding stem 64, shown in dotted lines in FIG. Instrument end 56 to contact point
contacts 54,55 can be replaced.

Due to the free movement of the gears of the actuating mechanism and the manual setting mechanism, the two contacts are already connected to the crown 33 before the hands begin to move.
record the direction of movement.

Instead of the disc 51 with the nose 52, it is also possible to provide at its periphery a disc that alternately conducts and insulates the user.

In that case, the device end need only consist of two friction contacts.

The true table is then '11,10,00' in some rotational direction.
,01. ...” and in the other direction '11,01,0
0, 10...".

Finally, the user can also apply an induced voltage to the coil of motor 71 to detect the direction of rotation of the pointer during manual correction.

Said voltage is approximately 50V, which does not cause any damage to the watch's electronics.

If the user of the watch forgets to place the crown in the manual setting position for a period of time exceeding the counting capacity of the counting circuit 73, 74, the accurate time indicated by the watch will obviously be lost.

To reset his watch to the correct time, he can set the hands in a general manner in one step and then push the crown into the rest position.

Since the difference between the time that the watch displayed before the first correction and the time that it currently shows is more than 71/2 minutes, the watch's electronics record that first correction as a time change, thus causing the pointer to change further. Rotate it some.

This then means that the difference between the displayed time and the exact time is 7
Since it is less than 1/2 minute, it is insignificant.

The watch user can then pull the crown to its manual setting position and accurately set the minute hand while waiting for the time signal pip.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of movable parts forming the mechanical device of a timepiece according to the first embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a wiring diagram of the corresponding electronic device, and FIG. FIG. 5 is a perspective view of the movable parts of the mechanical device of the second embodiment, and FIG. 5 is a wiring diagram of the corresponding electronic device. 2...Crystal, 1...Resonator, 3...
...Trimmer, 4...Divider, 6...
・Coil, 7...Rotor, 9...Kana, 8...Gear, 11...True, 16.
...Fourth gear, 26...Ten no uraguma, 29.
...Hour hand, 24...Minute hand, 18...
...Second hand, 35...Small railway car, 33...
Crown, 34... Winding stem, 44... Counting circuit, 42, 43... Instrument end, 39...
...Switch, 45... Counting circuit, 45...
...Detection circuit, 66...Kannuki, 65...
...Tsuzumi car, 62...Control device, 79.
...Decoder.

Claims (1)

[Claims] 1. (G) Crystal oscillator 1, (B) Frequency divider 4, (B) Bidirectional step motor 6.7, ((1) constitutes a wheel train connected to the step motor). A time display section consisting of a pinion, a gear, a true gear, a fourth gear, a hinoshi wheel, a fourth gear, a second gear, a third gear, and a plurality of hands that are permanently directly connected by the above gear train, (3) The following: Manual time correction device comprising components (1) crown 33° (11) switch 39.67.6B. (110 light source 42, phototube and grooves 41 and 43 constituting the first detection device, Constituent detection circuit 4
5. Nose 52, contacts 53, 54゜55, support 56 and detection circuit 57゜OV) Electronic components 44 and counting circuit 78 constituting a counting device
A crystal oscillation type timepiece equipped with a timepiece display section having a manual time correction device, comprising: (a) the divided period 4 has a predetermined frequency and a predetermined polarity sign, and -steps are bidirectional; providing a first series of pulses, each pulse driving a bidirectional stepper motor, to rotationally drive the pointer to advance a predetermined time value equal to the number of pulses for each step of the bidirectional stepper motor; (b) the crown 33 is moved from the rest position I to the operating position 1, and is connected to the wheel train in order to directly manually drive the pointer in the operating position I; (c) the switch 39 .67.68 is connected to said crown and is actuated to stop supplying said first series of pulses to said bidirectional stepper motor, and at the same time move said crown from said rest position l to an actuated position. (d) the detection device is connected to the gear train, and when the detection device is activated, when the pointer is rotated by an amount equal to the predetermined time value, the pointer is activated; forming a second series of pulses giving each pulse of equal sign in the direction given by the crown to the rotation; (e) said counting device being connected to said frequency divider and said detection device; receiving both said first and second series of pulses and having a predetermined counting capacity, and when said crown is in said operating position I and said train is driven; Mathematically adding the pulses of both series of pulses and further translating the crown from the operating position to the rest position, the stepping motor receives the pulses as provided by the counting device. The step motor rotates the pointer to advance or retard the display time by a value commensurate with the sum of the mathematically added pulses, thereby producing a third series of pulses having a sign corresponding to the sign of the sum. The timepiece corrects the error by transmitting the third series of pulses in a group having a number of pulses equal to the sum of the pulses.