JPS60111177A - Analog electronic timepiece provided with auto calendar - Google Patents

Abstract

PURPOSE:To make a switching mechanism having two steps for correcting a day and adjusting the hand unnecessary by selecting each digit of day, month and year by a mode changeover switch, and executing an input to a digit selected by a mode register, by a year, month and day setting switch. CONSTITUTION:A selection of each digit of day, month and year is executed by operating a mode changeover switch 22 and changing the contents of a mode register 24. An input to a digit selected by the mode register 24 is executed by operating a year, month and day setting switch 23. The input of the year, month and day setting switch 23 is formed by an inputting circuit 25 and supplied to each digit. Accordingly, year, month and day can be set freely. Especially, as for a year, the number of years to a leap years is inputted, therefore, even in case of a leap year, an auto calendar timepiece whose correction is unnecessary can be obtained. In such a way, an auto calender of a pointer type electronic timepiece is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an analog electronic watch with an automatic calendar.

Many conventional analog electronic watches with calendars have not been designed to distinguish between dog moons and small moons.

In other words, even on the day after the end of the month in which the month is small, the day is not shown as 1t, and even on the day after the day in February (if it is not a leap year), the day is still shown as 4. Most of them were.

Therefore, in order to adjust the date in such a watch, it is necessary to incorporate a date adjustment wheel and a date adjustment lever inside the watch, which increases the size of the watch and increases the cost of parts. Every time the end of a small month came around, I had to bear the burden of having to manually correct the display for that day.

The present invention is designed to obviate the above-mentioned drawbacks,
In addition to generating pulses for normal hand operation from the frequency dividing circuit and displaying the time, it is also possible to generate pulses with a higher frequency, and a counter for February 1, 2019 is built into the watch. At the end of each small month, a high-frequency pulse is sent to the motor in an extremely short period of time via a power train to move the calendar display car a predetermined number of steps.For example, at the end of the month of February in a leap year 29, 30, 31
To provide an analog electronic watch that can always display the correct time, date, etc. by fast-forwarding four steps up to 1, and can dramatically reduce the burden on the user.

The present invention will be explained in detail below with reference to the drawings.

An embodiment of the present invention is shown in FIG. 1 and will be described.

A reference signal for time measurement oscillated by an oscillation circuit 1 is frequency-divided by a frequency divider circuit 2. In the case of this embodiment, the frequency dividing circuit 2 is 1/2
The one that divides the frequency down to 0Hz is 7'.

The final output of the frequency dividing circuit 2, i/20 Hg, and the intermediate frequency division, 32 mi, are output to the multiplexer 3.

The multiplexer 3 selects 1/20 Hz when the time setting switch 4 is OFF, and selects 32 Hz when the time setting switch 4 is ON, and outputs the selected frequency to the gate 4 and the clear time counter 5.

The drive circuit 6 is 3/20 Hg or 32H from the gate 4.
Step motor 7'f is driven based on z.

The rotation of the step motor 7 is decelerated by a wheel train 8, which drives a pointer 9 and a gear train 10 of the indicator 9, and the pointer 9 displays the time, and the date wheel 11 rotated by the indicator gear train 1 (l) displays the date. In a relationship.

The frequency division ratio of the time counter 5 is the gear train 8 and the gear train 9.
The relationship is equal to the reduction ratio by 1/20 Hg from multiplexer 3 or 32H2.

The frequency division ratio of the time counter 5 is the gear train 8 and the gear train lf1.
The reason why the reduction ratio is equal to that of t is that the time counter 5 needs to have the same content as the time displayed on the hand 9 (t-24).

The operation of matching the contents of the pointer 9 and the three-hour counter 5 will be explained.

First, turn the switch for setting the electronic circuit to the initial state to 6N to bring the electronic circuit to the initial state. This switch is not shown in FIG. 1 because it is a common feature included in any electronic timepiece.

In this state, the pointer 9 is rotated by operating a crown (not shown) or the like to set 12:00 a.m. θ minute.

Next, when the time setting switch 9 is turned on, the multiplexer 3 selects 32 Hz and outputs it to the 32 Hz gate 4 and the 3-hour counter 5.

As a result, the pointer 9 is driven at a fast forward speed p of 32H2.

At the same time, the time counter 5 also counts 32 Hz.

Since the 24-hour counter 5 has a frequency division ratio equal to the reduction ratio of the gear train 8 and the day feed gear train 141, the number of 32Hz at which the pointer 9 is fast-forwarded Q and the number of 32H2 counted by the clear time counter 5 are the same. The numbers are in a matching relationship.

Therefore, the M time counter 5 is displayed with the finger button 9 +-1
7. Set the value between the axis 1 and the value of the 1st time between the axis. is output to the pointer section month-end correction pulse counting circuit 13.

The day counter 14 counts the daily carry from the gate 12 according to the contents of the month-end correction circuit 15, and calculates the monthly carry from the lunch 1.
It outputs to the set terminal S of 6 and the gate 17.

The month counter 18 counts the month carry from the gate 17 and outputs the year carry to the gate 19.

Further, the contents of the month counter 18 are referred to by the pointer unit month-end correction circuit 13 and the month-end correction circuit 15.

Year counter 20 counts the year carry from gate 19. The contents added to the year counter are referred to by the pointer section month-end correction pulse counting circuit 13 and month-end correction circuit 15, similar to the month counter J8.

If a day carry occurs from the current hour counter 5 and a month carry also occurs from the month counter 14, then the lunch 1
6 is set by the month carry.

As a result, the Q output of the latch 6 becomes vxw (JW: logic 1, '\": logic ○), so the gate 4 is sent to the drive circuit 6, and the gate 21 is sent to the pointer end month correction pulse counting circuit 13.
32Hz'z from the C frequency divider circuit 2 is input to each of them. When 32 Hz is input to the drive circuit 6, the step motor 7 is driven with a fast forward force of 32H2.

This amount of drive is determined by the count value of the pointer end month correction pulse counting circuit 13.

For example, if March 31st becomes April 1st.

Frequency division ratio of pointer end month correction pulse divider circuit 13 1d 1/
4320, D, 4320t-counting latch 16
The output connected to the reset terminal RK becomes 11F.

As a result, the Q of the latch 1G becomes l\1 (t), and the 32Hz signal is blocked by the gates 4 and 21.

As a result, the step motor 7 is 4320 by 32H2.
The fast forward mode is completed by being driven twice.

As a result, the date wheel 11 can advance by one day and display one day.

A signal of 1/20 Hz of the normal time during this fast forwarding is supplied to the drive circuit 6 by the gate 4, so there is no time delay during the fast forwarding.

Next, a case will be described in which, for example, the date changes from June to July 1st.

When a month carry occurs from June 30th to July 1st, the frequency division ratio of the pointer month end correction pulse counting circuit is set to l/8640. 32 days after this result day carry occurred
Fast forwarding by F5z stops after being performed 8640 times. Therefore, the date wheel 11 changes from the side entrance to the 1st.

Similarly, the case of changing from February 29th to March 1st in a leap year will be explained.

At this time, the pointer section month-end correction pulse counting circuit 13
A frequency division ratio of 2960 is set according to the contents of the month counter 18 and the year counter 20.

Here we will discuss the contents of the annual counter addition.

In this embodiment, the year counter is a quaternary counter, and is a kakunta that counts how many years later it will be a leap year.

For example, if this year is a leap year, the content of the year counter is 1X
``8..1. If 3 years later is a leap year, it is 101l, 2 years later is ``1'Q'', 1 year later is 101゜, etc. 2bi.
Count the years with t.

Therefore, the pointer section month-end correction pulse counting circuit 13 calculates that the month counter J8 is February and the content of the year counter addition is 1\\1.
In this case, it is set to 1/12960.

As a result, the step motor 7 is fast-forwarded 12,960 times in 32H2, so the pointer 9 is fast-forwarded by 3 days, and the mouth wheel is fast-forwarded by 3 days.
It will be sent for days.

Similarly, if the content of the year counter 20 is not l\\1, 2
For month-end correction from March to March, the pointer section month-end correction pulse counting circuit 13 is configured to be set to a division ratio of 1/17280.

As described above, the end of the month correction can be made by rotating the master wheel according to the contents of the pointer section month-end correction pulse counting circuit set by the end of the month.

Please note that during the month-end adjustment, the time cannot be displayed with finger 9,
Because the fast-forwarding occurs late at night and the fast-forwarding ends in a few minutes, there are almost no problems caused by month-end revisions.

In addition, in the explanation so far, the day counter is 141, the month counter is 18,
Since there was no detailed explanation of how to set the contents of the year counter 20, a brief explanation will be given here.

To select each digit of the day, February, and year, use the mode changeover switch 22.
Change the contents of the mode register by manipulating . Input to the digit selected by mode register Sae is performed by operating year, month, and date setting switch O.

The input of the year, month, and date setting switch 23 is shaped by the input circuit 5 and is supplied to each digit.

Therefore, in the present invention, the year, month, and day can be set freely. In particular, since the number of years until a leap year is entered for the year, an automatic calendar clock can be realized that does not require correction even in leap years.

As described above, according to the present invention, an automatic calendar for a pointer-type electronic timepiece can be realized, and its practical effects are great.

In addition, in this embodiment, the total period of the hand movement indicating the normal time is 20.
Although explained as seconds, the period of and is the quotient of 60 divided by a positive integer, that is, 60, 30.20, 15, 12,
It can be any of 10, 6, 5, 4, 3, 2.5, 2.1 seconds, etc., and the fast forward p pulse is 2, 4, 8, 16, 32, 64, 128, which is a positive integer power of 2. Any one such as Hertz will do.

Furthermore, since there is no need to adjust the date at the end of the month, there is no longer a need for a complicated switching mechanism such as the traditional two-stage drawer on the winding stem, one for adjusting the date and one for setting the hands. Since parts necessary for correcting the date indicator, such as a correction lever and a jumper, are no longer required, it contributes to the realization of smaller and thinner watches, and a dramatic cost reduction is realized.

[Brief explanation of the drawing]

The drawing is a block diagram of the invention. l: Oscillation circuit 2: Frequency divider circuit 3: Multiplexer 5: 24-hour counter 6:
Drive circuit 7. Step morph 8. Wheel train 9. Pointer River.. Day feed wheel train 11.. Date wheel 13. Pointer month end correction pulse counting circuit 14.. Day counter 15..
Month end correction circuit 16...Latch 18...Month counter 2
0@φ year counter 24 fist mode register 5...Input circuit.

Claims (1)

[Claims] [1] Power supply, oscillator, oscillation circuit, frequency dividing circuit, drive circuit,
An electronic clock with a motor, a wheel train, a moving wheel train, a pointer, and a calendar display wheel, which has a 24-hour counter, a pulse counting circuit for adjusting the end of the month in the hands, a day counter, a month counter, a year counter, and a month-end adjustment circuit. 24 above
The frequency division ratio of the time counter is equal to the reduction ratio of the wheel train and the gear train, and has a b relationship.24 hours are counted by the signal from the frequency dividing circuit, and the carry of the 24 hour counter is calculated at the end of the month. The count value is input to the H counter, which varies depending on the contents of the correction circuit, and the carry of the day counter is input to the year counter, and when a carry from the day counter to the month counter occurs, the pointer section is corrected at the end of the month An analog electronic timepiece characterized in that the pulse counting circuit drives the drive circuit in fast forward motion with a pulse different from the normal hand movement pulse according to the contents of the month counter and the year counter, thereby rotating the date dial. 121 Pulse period of normal hand movement 1, 2, 2.5, 3, 4
,5,6,in,i2,15,2f)
, 60).