JPS62135791A - Analog timepiece having automatic error correcting function - Google Patents

Abstract

PURPOSE:To maintain always the correct time by combining a time announcement selecting part which takes out only the time announcement from broadcasting programs, stopping once the hand operation by using a switching circuit for the hand operation in the just time position of the hand and closing the switching circuit by the just time sound of the time announcement incoming afterward. CONSTITUTION:A hand operation mechanism part 2 consists of a rotor 4 to turn the hand of a timepiece display part 1 and an excitation coil 3 which applies rotating power thereto. A pulse generating part 5 which excites the coil 3 consists of an oscillator 6 to be originally oscillated by a crystal oscillator, a prescaler 7, a counter 8 to take out a necessary frequency, and a pulse motor driving part 9. An automatic corrector 11 consists of a radio receiver 12, the time announcement selecting part 13 to take out the time announcement of the just time, a power source part 15 and a timer 14. The power source is supplied to the receiver 12 just before every just time to wait for the time announcement. The announcement sound and just time sound are discriminated from other signals by making use of the regular arrangement of the announcement sound and the just time sound and the circuit switch 10 closes the circuit which has been held open before the incoming of the time announcement by the correct just time signal, by which the hand operation is accelerated to maintain the correct time.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention prevents the accumulation of errors in commonly used quartz crystal analog watches, etc., and keeps the errors to a minute level that does not interfere with daily activities. For this purpose, we have integrated an error automatic correction function,
The structure of an analog clock that eliminates the need for artificial time 1$ correct operation.

(Prior art) A device receives a radio or television broadcast, determines the time display based on the time signal, and if the clock is ahead, stops the number of pulses corresponding to the amount of time n. Tokukai Sho's time correction clock that adds the number of pulses when the clock is slow! It is publicly known in Japanese Patent No. 120gtgq.

(Problem to be solved by the invention I7) However, in this method, the structure is extremely complicated because it is necessary to read the time difference, and if there is a delay, the corresponding number of pulses must be added. In the problem of adding N, if the timing of even one of the additional pulses matches the normal / Hz pulse for hand movement of the clock itself, the / pulse is invalid even though it was added. This results in a delay of 1 second.

(Means for Solving the Problems) Therefore, the present invention has been developed so that an analog clock whose rate is adjusted to the positive side receives a radio or television broadcast, and displays the contents of the broadcast program. A time signal selection section that takes out only the time signal is integrated, and at the hour position of the hands of the clock, the opening/closing circuit in the electric circuit of the drive section for hand movement is opened to temporarily stop the movement of the hands, and then the time signal is received. ◎ (Function) In conventional watches, for example, A
It is measured from M + o, oo, oo (10:00, o'clock, o'clock in the morning), and the number of seconds plus or minus from AM 10 o, oo after / month is considered as the average monthly difference of that clock, and is adjusted. In terms of the second hand, the standard is to make 60 correct rotations in 7 hours, and to make 41 correct rotations after 1 month.
The tolerance for 3.200 rotations is Saturday seconds, etc., and for example, this original oscillation is 11. /911301
If it is 1 MHz, then the original oscillation is G/? Ri JS Ko M
If you try converting to Hz KfJ17/after a month, it will be koj9.
This is 20 JO seconds, making it possible to create a clock that is k1 days earlier with the same tolerance compared to conventional clocks, but not later than standard time.

If you adjust a clock like this many times every 7 days, the error will be 0.
．． It is easy to keep the time to about 3 seconds, and the tolerance can even be widened.

When adjusting a clock like this, there is no need to add pulses when the clock is delayed (it is only necessary to start the clock in time with the time signal).

The counter in the automatic error correction device temporarily stops the second hand at the hour position, and when the time signal arrives, the circuit that had stopped the hand movement as a signal is closed, and the watch restarts from the correct hour. If there is no time signal, the automatic error corrector circuit determines that the forecast sound that should have been received before the hour sound does not arrive, and immediately cancels the pause circuit and resumes hand movement.

(Example) In the figure, - is a hand movement mechanism unit consisting of a rotating rotor and an excitation coil 3 that applies rotational force to the pointer of the clock display section. The pulse generating section 5 is composed of an oscillator 6 using a crystal oscillator as its source, a pulse motor driving section 9 through which the frequency is divided by a prescaler 7 and a necessary frequency is extracted via a counter &F. The automatic correction device// is a radio receiver l, a time signal selection unit/J that takes out the hourly time signal, a power supply unit 15 that supplies all the electricity, and a time signal selection unit/3 and a radio receiver/- that are corrected every time. Tokishi! It consists of a timer/4' to supply power for about seconds. In the figure, the solid arrow 1c9 indicates an electrical path, and the white arrow indicates a signal path.

As can be seen from the above configuration, a little before the hour every hour, the radio receiver /- is turned on and waits for the time signal, and uses the regular arrangement of the forecast sound and the hour sound to distinguish it from other signals and correct the correct signal. The time signal causes the circuit breaker 10 for the excitation coil 3 in the pulse generator 5 to operate as a closed circuit, which had been open before the time signal was received, and to move the hands of the clock.

The timing of the temporary stop before the hand movement resumes is that the counter g measures the number of pulses required to rotate from the hour position to the next same position, and when the number is the same, the circuit breaker 1oy5 is opened and the hand movement is stopped at the hour position. Wait for the hour tone to arrive. If there is no time signal, this is determined by the absence of the expected forecast tone from 3 seconds before the hour (standard time), and the circuit breaker is activated before the clock hands stop. Open circuit command to 10? The hands will continue to move after the hour and wait for the next time adjustment.

As can be seen from the above, the structure of the analog clock itself according to the present invention is simply stopped or moved.

This is an extremely simple configuration in which the original oscillation frequency is set to 0' and slightly higher so that the rate of movement of the hands is always on the positive side taking into account errors, and stopping and operation are repeated.

(Effects of the invention) As mentioned above, even though it is possible to adjust the time manually, in reality, the operation is complicated and almost impossible for the elderly and young women.

Furthermore, watches with a difference of a few seconds per month or more than 10 seconds per year cannot be made available for general use due to their price.

With the clock according to the present invention, once it is set at the beginning of use, it will always maintain the correct time by automatically correcting it, no matter how long it is left without maintenance other than when the power is turned off.
It is possible to kill someone.

Although it is still relatively easy to adjust the time on digital clocks,
With digital clocks, it is difficult to create multiple different designs, and with analog clocks, which are easy to design, it is difficult to apply automatic correction due to the structure and price.

From this point of view as well, it has become easier to manufacture a self-correcting analog timepiece according to the present invention, and it has become possible to produce a wide variety of timepieces that are generally faithful to the time.

[Brief explanation of drawings]

The drawing shows an embodiment of the invention. /... Clock display section, -... Hand movement mechanism section, J... Excitation coil, q... Pulse motor rotor, S...
・Pulse generation fAR1t-...oscillator, 7.
...Prescaler +, g...Counter, 9...Pulse motor-1 drive section, 10...Circuit breaker, /c...
・Automatic I15 main unit, /co...radio receiver, /3・
. . . time signal selection section, /da . . . timer, /S . . . power supply section.

Claims (1)

[Claims] An opening/closing circuit in the electric circuit of the drive unit that receives radio or television broadcasts and extracts only the time signal from the broadcast program, and at the hour position of the hands of the clock, is used to move the hands. An analog clock whose rate is adjusted to the positive side so that the clock always moves forward, and has the function of opening the clock to temporarily stop the hand movement, and then closing the opening/closing circuit at the hourly sound of the incoming time signal and restarting the hand movement. .