JPS5942271B2 - analog electronic clock - Google Patents

Description

[Detailed Description of the Invention] In this invention, the alarm time is set using a window provided on the dial.

This invention relates to an analog electronic clock with an alarm that electronically stores alarm time and generates an alarm.

Conventionally, various alarm adding mechanisms have been considered for analog electronic watches, and the time has been set using mechanical methods such as a guide hand.

However, in this setting, the guide hand is analog and is based on a mechanical mechanism, so it is virtually impossible to sound the alarm at a truly accurate time.
It was impossible.

” - As a way to eliminate the writing defect, through the window installed on the dial,
There is a method of digitally displaying the alarm time using a display member.

However, with the above configuration, there are 60 ways to display the minutes, and when used on a small wristwatch, the display becomes small and difficult to read, and the operation for setting the desired alarm time becomes complicated. Ta.

An object of the present invention is to eliminate the above-mentioned drawbacks and improve the operability of an analog clock that digitally displays alarm time.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. FIG. The minutes are displayed digitally.

Now, to explain the case of setting the alarm time, when the current time is around 9:08 as shown in Figure 1a, how to synchronize the alarm setting display and the clock hands. state

At around 9:10 o'clock, the watch user selects the numerical display 9 of 9 o'clock by rotating the crown in direction A using a radio or the like.

Next, by rotating the crown in direction B, the numerical display 10 for 10 minutes is selected.

Then, pull out the crown and set the hands to 9:10:00.

Next, the hands are started at the same time as the time of 9:10:00 seconds is announced by a radio or the like.

These operations (usually performed when adjusting the time)

), the hands and alarm setting display can be perfectly synchronized.

Next, if the user sets the alarm time to 23:40, rotate the crown in the A direction as before,
Select the digital display 23, then rotate in direction B, select the minute digital display 40, and select the display on the window 12 as shown in FIG.

This operation completes the alarm time setting.

To set the alarm time after that, simply rotate the crown.

In other words, when setting the time, if all resets such as the hour and minute counters and frequency divider circuits are set in common as described above, the contents of the minute and hour memory circuits will be set to a fixed value (
For example, they can be the same value).

On the other hand, the time indicated by the hour and minute hands on the dial and the time displayed in the dial window are brought to the same value by rotating the crown, and then the timepiece is started.

In this case, since the contents of the minute/hour memory circuit and the hour/minute counter match, an alarm sound can generally be generated, and this means that the user is assured that the alarm operation of the watch is working properly. Rather, it can be provided to confirm that the

To stop the alarm sound in this case, the same method and means as for stopping a general alarm sound can be used.

FIG. 1C shows a sectional view of the alarm time setting mechanism, in which the dial 11 is provided with a window 12, Hall elements 16a and 16b are embedded in the side wall of the window 12, and the lower part of the dial 11 is provided with a window 12. A setting wheel 13 and a minute setting wheel 14 are located there, and these are configured to be rotated by an hour and minute rotating wheel 15.

Now, when the crown is rotated in direction A, the hour setting wheel 13 rotates, and the hour value on the hour setting wheel 13 moves in the direction of the arrow in Figure 1.

At the same time, the magnetic material 17a provided corresponding to the hour value is detected by the Hall element 16a, and it is confirmed how many times the hour value is detected by the Hall element 16a provided at the window.

Similarly, when the crown is rotated in direction B in FIG. 1a, the minute setting wheel 14 rotates, and the Hall element 16b detects the magnetic material 17b provided corresponding to the fractional value and converts it into an electrical signal.

Next, a description will be given based on FIG. 2, which shows a timepiece circuit diagram of an electronic wristwatch showing one embodiment of the present invention.

In FIG. 2, a standard time signal from an oscillation circuit 21 having a crystal oscillator is converted into an IHz signal by a frequency dividing circuit 22, and this IHz signal is used by a drive circuit 23 to control the hands located on the dial 11. drive

Further, this IHz signal is input to a counting circuit 24 consisting of a sexagesimal counter that counts seconds, a sexagesimal counter that is connected to the sexagesimal counter and counts minutes, and a 24simal counter that counts hours.

On the other hand, a memory circuit 25 is provided which includes a sexagesimal counter for storing minutes corresponding to the minute counter and clock counter of this counting circuit 24, and a 24-decimal counter for storing hours.

Switch S is connected to the input terminal of the 24-decimal counter that stores the time.
a is connected.

This switch Sa is a Hall element 1 shown in FIG. 1C.
6a, and is an equivalent switch that turns on every time the numeric display passes through the window on the dial 11 when the crown is rotated in the on direction.

A pulse number selection circuit 29 is connected to the input terminal of the sexagesimal counter that stores the minutes, and the frequency division stage output dj of the frequency division circuit 22 is used as one input of this pulse number selection circuit 29, and the other A switch sb is connected to the input side.

This switch sb is a Hall element 16b shown in FIG. 1C.
The opening and closing of the switch is performed by a magnetic material 17b provided at a position corresponding to the minute numerical display.

Now, if you turn the crown in direction B, it will turn to C in Figure 1.
By the detection of the Hall element 16b of the magnetic material 17b, the equivalent switch sb is closed, the flip-flop consisting of the NOR circuit N0R2 and the NOR circuit NOR3 is inverted, and the flip-flop field knob signal is shifted by the shift register SR.

The frequency division stage signal dj, which is used as a clock signal for the shift register SR, is generated after two pulse signals are output from the output of the AND circuit A1 by one closed state of the switch sb (not shown in the figure). detects the output of Q2 and resets the shift register.

This causes two pulses to be input to the minute storage counter.

In this way, when two pulses are stored by one switch operation, the display interval of the minute display shown in FIG. 1 needs to be set at two minute intervals.

Furthermore, in the embodiment circuit diagram of FIG.
A coincidence circuit 26 is provided to detect coincidence between the hour counter and minute counter of No. 4 and the hour memory counter and minute memory counter of the memory circuit 25, and the output signal of the coincidence circuit 26 causes the frequency division stage output signal dk to be gated. A2 output signal, which controls the oscillator O8C and outputs the speaker SP
produces an audible sound.

The switch Sd extracts the electric signal of the oscillator O8C as an audible sound from the speaker SP as necessary by closing the switch Sd by the wristwatch wearer even when there is no output signal from the AND gate A2.

Further, the switch Se stops the oscillation of the oscillator O8C,
This stops the production of audible sounds.

Next, the case of setting an alarm will be explained. First, the switch SR is closed by pulling out the crown.

When the switch SR is in the closed state, the frequency dividing circuit 22 is reset, and at the same time, each counter configuring the counting circuit 24 is reset, and each counter configuring the storage circuit 25 is also reset.

Here, if the clock consisting of the oscillation circuit 21, the frequency dividing circuit 22, and the 1 drive circuit 23 is not in a state of delay or advance and is operating normally, there is an error between the alarm setting time and the alarm sounding time. If this is recognized, the reset switch for the frequency dividing circuit 22 may be provided independently of the reset switches for the counting circuit 24 and the memory circuit 25.

In this case, the watch wearer looks at the hands of his/her watch and finds that it shows 9:08, then turns the crown and sets the hour display 9 and the minute display 8 on the window 12. .

Immediately after setting, the counting circuit 22 and the memory circuit 25 are reset by using the reset switch of the frequency dividing circuit 22 and the common reset switch of the counting circuit 24 and the memory circuit 25, which are independent of each other.
Reset the alarm and then change the alarm setting time, e.g. 2
At 3:40, turn the crown to set.

When the frequency dividing circuit 22, the counting circuit 24, and the memory circuit 25 are commonly reset as shown in FIG. 2, the current time is
If it is 9:08, rotate the crown at a time when you can expect accurate time such as a time signal, for example around 9:10,
Set the hour display to 9 and the minute display to 10.

Then, close the switch SR, reset it, and close the dial 11.
Adjust the upper hour hand to 9 o'clock, the minute hand to 10 minutes, and the second hand to 00 seconds.

When the time signal announces 9:10:00 seconds, the reset is canceled.

If the alarm setting time 23:40 is set in the memory circuit 25 at the same time as the reset is released, the coincidence detection circuit 26 operates exactly at 23:40, and an audible sound is emitted from the speaker SP.

After that, there is no need to synchronize the counting circuit 24 and the memory circuit 25, so it is only necessary to set the alarm time.

Next, another embodiment shown in FIG. 3 will be described.

The oscillation circuit 21 is a Colpittsquibb oscillation circuit composed of a crystal oscillator Q1 inverter 1 and capacitors C1 and C2, and the frequency dividing circuit 22 is a flip-flop FF1.
~ FFn.

The frequency dividing circuit 22 has flip-flops FFD1 and FFD.
1 drive circuit 23 consisting of 2 is connected, and motor M is rotated by 1 drive coil L.

As in the embodiment of FIG. 2, a counting circuit 24 is connected to the frequency dividing circuit 22.

A memory circuit 25 is provided corresponding to the counting circuit 24, the hour memory circuit receives the electrical signal of the Hall element 16a shown in FIG.
The output signal of the pulse number selection circuit 29 having R is input.

The electrical signal of the Hall element 16b of FIG. 1C is input to the input of the pulse number selection circuit 29.

Here, the difference from the embodiment in FIG. 2 is that when the switch sb, which is equivalent to the Hall element 16b, is closed once, the AND gate A
1 to 5 pulses are applied to the minute storage circuit, and therefore the minute display shown in FIG. 1 is displayed at 5 minute intervals.

It goes without saying that after outputting five pulses, the output of C5 is detected and the shift register is reset, but this is omitted in FIG. 5 as in FIG. 2.

Further, in the embodiment shown in FIG. 3, the transmission gate TG3 is opened and closed by the output signal of the matching circuit 26, the transmission gate TG3 is opened by detecting the matching signal, and the frequency is controlled by the output signal of the frequency dividing circuit 22. The selection circuit 27 is activated and the frequency division stage output signals di and di+1 are alternately applied to the sound generation circuit 28 to generate an audible sound.

To stop the audible sound, a monostable multivib break having a timer function may be inserted into the matching circuit 26.

Further, the switch Sc is for the wearer to confirm the buzzer sound by closing it as necessary.

Further, the setting of the alarm time may be performed in the same manner as in the embodiment shown in FIG.

As described above, according to the present invention, it is possible to easily and accurately set the alarm time in an analog electronic watch.

Further, the pulse number selection circuit 29 allows setting of alarm times at regular intervals with a single switching operation, which is highly effective in terms of display visibility and operability.

Further, the interval between the above alarm times is also determined by the pulse number selection circuit 29.
This can be changed simply by changing the shift register, making it a highly versatile configuration.

Furthermore, since the time counting circuit 24, memory circuit 25, and pulse number selection circuit 29 can also be constructed using field effect transistors, it is possible to form a monolithic IC including the conventional oscillation circuit 21, frequency dividing circuit 22, and 1 drive circuit 23. is possible, and the effects of productivity, economy, miniaturization, etc. are significant.

In addition, in the embodiment circuits of FIGS. 2 and 3, when synchronizing the alarm setting time with the clock, the time counting circuit 24 and the memory circuit 25 have the same content through a common reset terminal, Since the coincidence detection circuit operates and generates an alarm sound, it also has the advantage that it can be clearly determined whether or not each circuit has been reliably reset.

In this way, the alarm time setting operation becomes even easier.

Furthermore, the hour display for setting the alarm time of the present invention can be displayed in 24 hours, and the minute display can be changed to 1 minute display. This is appropriate, and even in such a case, it is sufficient to simply change the shift register of the pulse number selection circuit 29.

Furthermore, since the counting circuit 24, the memory circuit 25, and the pulse number selection circuit 29 can also be configured using field effect transistors, the oscillation circuit 21, the frequency dividing circuit 22, and the drive circuit 23
Since it can be monolithically integrated including the components, the manufacturing effect is significant.

In the embodiment circuits of FIGS. 2 and 3, when synchronizing the alarm setting time with the clock, the counting circuit 2
4 and the storage circuit 25 become identical in content by the reset, the coincidence detection circuit operates and generates an alarm sound, so it has the advantage that it can be clearly determined whether or not the reset has been reliably executed.

The pulse number selection circuit can also appropriately utilize a second counter provided in the counting circuit.

[Brief explanation of drawings]

FIG. 1a shows a dial of an electronic wristwatch which is an embodiment of the present invention. FIG. 1 is a diagram showing a method of setting an alarm setting time. FIG. 1C shows a sectional view of the alarm setting time setting mechanism. FIG. 2 shows a timepiece circuit diagram of an electronic wristwatch which is an embodiment of the present invention. FIG. 3 shows a timepiece circuit diagram of another electronic wristwatch which is an embodiment of the present invention. 11: Dial board, 12: Window, 13: Hour setting wheel, 14: Minute setting wheel, 15: Hour and minute rotating wheel, 16a, 16b: Hall element, 17a, 17b: Magnetic material, 21: Oscillation circuit, 22: Minute Cycle circuit, 23: Drive circuit, 24: Time counting circuit, 25
: memory circuit, 26: - number circuit, 27: frequency selection circuit,
28: Sound generation circuit, 29: Pulse number selection circuit, R: Resistor,
Q: Crystal resonator, C1, C2: Capacitor, 11. I
2. I3. I4゜I5. I6. I7: Inverter,
FF1. FFn: flip-flop, TGl, TG2.
TG3: Transmission gate, EXl, EX
2: Exclusive OR circuit, L: Coil, M: Motor, N0
R1, NO horse NOR3: Noah circuit, Sa, Sb, Sc,
SR: Switch.

Claims (1)

[Claims] 1. At least an oscillation circuit, a frequency dividing circuit having a reset terminal, a time counting circuit having a reset terminal and counting the signal of the frequency dividing circuit, and an alarm time displayed in a window provided on the dial. An analog electronic watch comprising: a display member for displaying an alarm time; , a memory circuit having a reset terminal and inputting the output of the pulse number selection circuit to store the alarm time of the display member, and detecting coincidence between the contents of the time counting circuit and the count contents of the memory circuit. An analog electronic timepiece comprising a coincidence circuit and an alarm sound generating device operated by the output of the minus number circuit. 2. The analog electronic timepiece according to claim 1, wherein the frequency dividing circuit, the time counting circuit, and the memory circuit have a common reset terminal.