JPH037078B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an analog electronic timepiece having an alarm device that generates an alarm signal when a preset scheduled time has elapsed.

2. Description of the Related Art Among pointer-type display electronic watches, so-called analog electronic watches, alarm clocks equipped with indicator hands have been proposed to generate an alarm signal when a scheduled time arrives. However, watches with guide hands have a complicated structure and are thicker, so they lack the beauty that is a feature of analog watches. In order to eliminate this drawback, a time display hand has recently been proposed in which the time display hand also functions as a reference hand. However, with this type of watch that has been proposed in the past, when the external operating member is operated, the hands are first fast-forwarded to the alarm set time, but then the hands return to the current time, so it is usually impossible to know the set time. Furthermore, in the case of adjusting the set time, it was necessary to fast-forward the hand to the set time and then adjust the set time. When using it as an alarm clock, once the hands are set to the set time as described above, the set time will be memorized and the hands will normally display the current time, which is more convenient, but if the scheduled time is short, When used simply as a short-time timer, it is easier to set the scheduled time, and once the scheduled time is set, it is more convenient for the hand to display the scheduled time until the scheduled time is reached.

The purpose of the present invention is to allow the normal time display hand to double as a scheduled time display hand, and to make it easy to set the scheduled time, so that once the scheduled time is set, the hand continues to display the scheduled time until the scheduled time is reached. The objective is to obtain an analog electronic clock with an alarm device.

The analog electronic timepiece according to the present invention includes an input signal generation circuit that generates an input signal in response to an operation of an external operating member, a fast-forward pulse generation circuit that generates a fast-forward pulse, and a drive circuit that generates the fast-forward pulse in response to the input signal. and a timer control circuit that detects when the difference in the number of pulses between the fast-forward pulse and the hand movement pulse blocked by the switching circuit becomes zero, in response to a coincidence signal from the timer control circuit. and an alarm device that generates an alarm signal in response to the operation of the external operating member, the step motor rotates rapidly in response to the operation of the external operating member to cause the pointer to wait in advance, and when the scheduled time elapses, the alarm device issues an alarm. It is characterized by returning to the normal hand movement state as soon as the signal is generated.

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

FIG. 1 is a circuit block diagram of an analog electronic timepiece according to the present invention. In Figure 1, 1 is an oscillation circuit,
2 is a frequency dividing circuit, and this frequency dividing circuit 2 divides the frequency of the signal from the oscillation circuit 1 until a signal necessary for driving the clock is obtained. Reference numeral 3 designates a hand movement pulse generation circuit which combines signals from appropriate output stages of the frequency dividing circuit 2 to generate pulses every 20 seconds having a pulse width necessary for hand movement.
(In this example, we will explain a clock that moves its hands every 20 seconds.) 4 is a switching circuit that connects AND gates 5 and 6.
The OR gate 7 normally passes the above-mentioned hand movement pulse, but when operated by an external operating member (not shown), a fast-forward pulse, which will be described later, is passed instead of the hand movement pulse. 8 is a drive circuit,
Toggle flip-flop 9 (hereinafter referred to as T-FF), NAND gates 10 and 11, inverter 1
2 and 13, and from the switching circuit 4 to T-
Every time a pulse is applied to the input terminal T of the FF 9, the inverters 12 and 13 alternately output pulses.
Reference numeral 14 denotes an electromagnetic coil, which is driven by inverters 12 and 13 to rotate a rotor 15 by one step every 20 seconds, thereby driving the pointer via a wheel train (not shown). The electromagnetic coil 14 and rotor 15 constitute a step motor together with a stator (not shown). 16 is the switch terminal for single fast forwarding, 17 is 10
This is a minute forward switch terminal, which is normally in the off state, but is turned on by being connected to the positive terminal of a power source (not shown) by operating an external operating member. 18 is an input signal generation circuit, which includes AND gates 19, 20, set reset flip-flops 21, 22, 23 (hereinafter referred to as S-RFF), a 10-minute counter 24, and OR gates 25, 2.
Normally, an L signal is output from the OR gate 25 and S-RFF23, and an H signal is output from the OR gate 25 and S-RFF23 only when the external operating member is operated to switch to the timer mode. Output. In other words, S-RFF 23 has a function as a timer storage means for storing timer modes, and 28 is a fast forward pulse generation circuit, which generates a 64Hz pulse.
A fast forward pulse is being generated. Reference numeral 33 denotes a timer control circuit, which is composed of an up-down counter 34 and a coincidence signal generation circuit 35. The up-down counter 34 performs up-counting with fast-forward pulses and down-counting with hand movement pulses, so that the up-count and down-count match. When this happens, that is, when the difference in the number of pulses becomes zero and the count becomes 0, the coincidence signal generation circuit 35 outputs a coincidence signal. Reference numeral 36 denotes an alarm device, which is composed of an alarm signal generation circuit 37 and an alarm signal generator 38 (a buzzer device in the embodiment).

In the above configuration, the output of the output terminal Q of S-RFF23 is normally held at the L signal.
The AND gate 5 is in an open state, so the hand movement pulse passes from the switching circuit 4 to the T of the drive circuit 8.
- applied to FF9 and NAND gates 10 and 11. The NAND gates 10 and 11 are alternately opened by the output and inverted output of the T-FF9, and pulses every 20 seconds are alternately applied to the inverters 12 and 13. The hands are driven every 20 seconds and display the current time.

Next, the operation of fast forwarding the pointer and setting the timer time by operating an external operating member (not shown) will be described.

First, the single-shot fast-forward operation will be explained. When the external operating member is operated, the single-shot fast-forward switch terminal 16 is connected to the positive side of a power source (not shown).
The H signal is applied to one input terminal of the AND gate 19. Since the output signal from the hand movement pulse generation circuit 3 is applied to the other input terminal of the AND gate 19 via the inverter 27, the single fast forward switch terminal 16 is connected to the positive side of the power supply while no hand movement pulse is generated. at the same time as connected to
An H signal is output from the AND gate 19. Note that while the hand movement pulse is being generated, the H signal is not output from the AND gate 19, but this is to ensure that the hand movement is completed before fast forwarding. Therefore, in this case, if the operation of the external operating member is continued, the H signal will be output from the AND gate 19 at the same time as the hand movement pulse ends. Operate the external operation member
When the H signal is output from the AND gate 19, the signal is applied via the OR gate 26 to the set terminal S of the S-RFF 23, which is a timer storage means. Therefore, the output signal from the output terminal Q of the S-RFF 23 is switched and held at the H signal, and the switching circuit 4 is applied with a signal via the inverter 30, so that the AND gate 5 is in the closed state, and the AND gate 6 is in the open state. This will cause the output to be switched.

Further, the AND gate 31 is opened, and an L signal is applied to the reset terminal R of the up-down counter 34 via the inverter 32, and the reset of the up-down counter 34 is canceled, thereby entering the timer mode.

On the other hand, the H signal from AND gate 19 is S-RFF
It is also applied to the set terminal S of 21, S-RFF2
The output of output terminal Q of No. 1 is switched to an H signal and held. Since the H signal output from the S-RFF 21 is applied to the AND gate 29 via the OR gate 25, the AND gate 29 is in an open state, and the fast-forward pulse from the fast-forward pulse generating circuit 28 passes through the AND gate 29. The fast-forward pulse that has passed through the AND gate 29 is applied to the AND gate 6 of the switching circuit 4, but since the AND gate 6 has already been switched to the open state, the fast-forward pulse passes through the switching circuit 4 and is applied to the drive circuit 8. be done. of drive circuit 8
The fast-forward pulses applied to the NAND gates 10 and 11 are distributed by the output of the T-FF9,
The signal is output from the NAND gate 10 or 11 and applied to the inverter 12 or 13. Therefore, the electromagnetic coil 14 is excited, the rotor 15 is driven by the electromagnetic coil 14 and rotates one step, and the hands move 20 seconds.

The fast-forward pulse output from the AND gate 29 is also applied to the up terminal U of the up-down counter 34, so that the up-down counter 34, which has already been reset, counts up by 1.

Also, since the fast-forward pulse is also applied to the reset terminal R of S-RFF21, the fast-forward pulse is
At the same time, when only 1 passes through the AND gate 29, the S-RFF 21 is activated by the falling signal of the fast-forward pulse.
is reset, and the output signal of S-RFF21 becomes L.
The signal is switched and held. Therefore, AND gate 2
9 is in a closed state.

That is, when the external operating member is operated once, one fast-forward pulse is output from the AND gate 29, and the pointer is fast-forwarded by 20 seconds. After that, when a hand movement pulse is generated from the hand movement pulse generation circuit, this hand movement pulse is applied to the AND gate 3 which is already in an open state.
1 to the down terminal D of the up-down counter 34, and the up-down counter 34
Perform a down count. When the up-down counter 34 counts down by 1, the up-down counter 34 enters the 0-count state because it has already counted up by 1, and a coincidence signal is output from the coincidence signal generation circuit 35 and the alarm device 36
is applied, and a buzzer sounds to notify that the set timer time has elapsed.

The coincidence signal from the other coincidence signal generation circuit 35 is S
- Also applied to the reset terminal of RFF23, S-
The output signal of the RFF 23 is switched to and held at the L signal, thereby canceling the timer mode. Therefore, the switching circuit 4 returns to the state of passing the normal hand movement pulse, and the up/down counter 34 is reset.

Therefore, from this point on, the hands are driven by the hand movement pulses and perform normal hand movement.

In actual operation, it is rare for the user to stop operating the external operating member after advancing the pointer by 20 seconds, and the user may operate the external operating member many times while watching the progress of the pointer, until the pointer reaches the desired point. It is often a device that is carried to a location. The operation in this case can be easily understood from the operation explained above, so the explanation will be omitted, but in this case as well, the pointer follows the operation of the external device member for the scheduled time, fast-forwards, waits, and waits for the set time. When , a buzzer sounds and the hands return to normal operation.

Next, we will explain the operation when you want to sound the buzzer after 10 minutes with one operation of the external operation member. In this case, a 10-minute external operating member (not shown) is operated, but when this external operating member is operated, the 10-minute
The minute forward switch terminal 17 is connected to the positive side of the power supply, and an H signal is applied to one input terminal of the AND gate 20. Since the output signal from the hand movement pulse generation circuit 3 is applied to the other input terminal of the AND gate 20 via the inverter 27, the 10-minute fast forward switch 17 is turned on when the power supply is turned off while the hand movement pulse is not generated. At the same time as connected to the side
An H signal is output from the AND gate 20. While the hand movement pulse is occurring, the H from AND gate 19
Although no signal is output, in this case, by continuing to operate the external operating member in the same manner as described above, an H signal is output from the AND gate 19 at the same time as the hand movement pulse ends. When an H signal is output from the AND gate 20 by operating the external operating member, the signal becomes
It is applied to the set terminal S of S-RFF 23 via OR gate 26. Therefore, the output signal from the output terminal Q of the S-RFF 23 is switched and held at the H signal, and the switching circuit 4 is applied with a signal via the inverter 30, so that the AND gate 5 is in the closed state.
The AND gate 6 becomes open and the output is switched.

Furthermore, the AND gate 31 is opened and the reset of the up-down counter 34 is released.

On the other hand, the H signal from the AND gate 20 is S-RFF
It is also applied to the set terminal S of 22, S-RFF2
The output of the second output terminal Q is switched to an H signal and held. This H signal from the S-RFF 22 is applied to the AND gate 29 via the OR gate 25.
The AND gate 29 is in an open state, and the fast-forward pulse from the fast-forward pulse generation circuit 28 passes through the AND gate 29. The fast-forward pulse that has passed through the AND gate 29 is applied to the AND gate 6 of the switching circuit 4, but since the AND gate 6 has already been switched to the open state, the fast-forward pulse passes through the switching circuit 4 and is applied to the drive circuit 8. be done. Thereafter, the pointer is fast-forwarded in the same manner as the operation by a single fast-forward pulse.

The fast-forward pulse output from the AND gate 29 is also applied to the up terminal U of the up-down counter 34, and the up-down counter 34, which has already been reset, starts up-down counting.

Furthermore, the fast-forward pulse is also applied to a 10-minute counter 24, which counts at the falling edge of the fast-forward pulse, and outputs an H signal when it counts 10 minutes, that is, 30 pulses. do. The output of this H signal is S-RFF22
S-RFF2 is applied to the reset terminal of S-RFF2.
2 is reset, and the signal from its inverted output terminal Q is switched to and held at the H signal, whereby the counter 24 is reset. At the same time S-RFF22
The signal from the output terminal Q of is switched to and held at the L signal, so that the AND gate 29 is closed.

In other words, after 30 fast-forward pulses pass through the AND gate 29, the fast-forward pulses are AND gate 29.
Unable to pass through gate 29.

Therefore, the pointer waits ahead of the position advanced by 10 minutes, and the up-down counter 34
counts up to 30 and stops counting. Next, as time passes, the hand movement pulse is applied to the down terminal D of the up/down counter 34 every 20 seconds.
The signal is applied through the AND gate 31, and the count state of the up-down counter 34 is decreased. 30
When the down count of , that is, 10 minutes has passed, the count of the up-down counter 34 becomes 0,
A match signal is generated from the match signal generating circuit 35.
This coincidence signal is applied to the alarm device 36, which generates a buzzer sound to notify that the set time of 10 minutes has elapsed.

On the other hand, this coincidence signal is also applied to the reset terminal of S-RFF 23, and the output of S-RFF 23 is switched and held at the L signal. Therefore, the switching circuit returns to the state of passing the normal hand movement pulse, and the up-down counter 34 is reset.

Therefore, from this point on, the hands are driven by the hand movement pulses and perform normal hand movement.

Next, an embodiment will be described in which it is made clear that the hand is indicating the scheduled time while the hand is positioned at the scheduled time ahead of the set time.

FIG. 2 is a circuit block diagram for achieving the above object, in which the circuit blocks enclosed by dotted lines are added to the circuit blocks shown in FIG. 1.

Therefore, items outside the dotted line in Figure 2 that have the same function as those shown in Figure 1 are given the same numbers as in Figure 1, and only those necessary for explaining Figure 2 are included in Figure 1. It is extracted from the figure and described.

In FIG. 2, 41 is a scheduled time display pulse generation circuit which generates a pulse with a narrow pulse width that does not rotate the rotor 15 every second. 42 is
The three input terminals of the AND gate are connected to the output terminal of the scheduled time display pulse generation circuit 41, the output terminal of the OR gate 25 via the inverter 43, and the output terminal Q of the S-RFF 23, respectively.
The output terminal of the AND gate 42 is connected to the input terminal T of a toggle flip-flop 44 (hereinafter referred to as T-FF44) and one input terminal of NAND gates 45 and 46, and the other input terminal of the NAND gate 45 is Connected to output terminal Q of T-FF44,
The other input terminal of the NAND gate 46 is connected to the inverted output terminal Q of the T-FF 44, and the NAND gate 45
The output terminal of one input terminal is NAND gate 1
The output terminal of the NAND gate 46 is connected to the other input terminal of an AND gate 47 whose one input terminal is connected to the output terminal of the NAND gate 11. The output terminals of AND gates 47 and 48 are connected to the input terminals of inverters 12 and 13, respectively.

In the above configuration, in normal hand movement state, S
- Since the output from the output terminal Q of the RFF 23 is held at the L signal, the AND gate 42 does not output the pulse from the scheduled time display pulse generation circuit 41, but outputs the L signal, and the NAND gates 45, 46
An H signal is output from.

Therefore, the output pulses of the NAND gates 10 and 11 are directly applied to the inverters 12 and 13,
Normal hand movement is performed.

Next, the external operating member is operated and the fast forward pulse is activated.
To explain the case of output from the AND gate 29, in this case, since the H signal is output from the OR gate 25, the output of the inverter 43 is L.
The AND gate 42 does not output a scheduled time display pulse but outputs an L signal. Therefore, for the same reason as mentioned above, the hands are fast-forwarded by the fast-forward pulse.

Next, a case will be described in which the hand is fast-forwarded to a scheduled time and the fast-forward pulse ends. The fast forward pulse ends when the output from OR gate 25 is L.
This is because the inverter 43
The output becomes an H signal.

On the other hand, after the end of the fast-forward pulse, S- is maintained until a coincidence signal is generated from the timer control circuit 33 shown in FIG.
An H signal is output from the output terminal Q of the RFF23. Therefore, a scheduled time display pulse is output from the AND gate 42, and the NADA gates 45 and 46
It is applied to one input terminal of AND gates 47 and 48 via.

On the other hand, when the fast forward pulse ends, OR gate 7
Since the output from is an L signal, AND gate 4
An H signal is applied to the other input terminals 7 and 48. Therefore, a scheduled time display pulse is applied to the inverters 12 and 13, and is applied to the electromagnetic coil 14.

However, since this scheduled time display pulse does not have a pulse width sufficient to rotate the rotor 15,
The rotor 15 only moves forward and backward slightly every second.

Therefore, the pointer also moves slightly forward and backward every second, and by looking at the pointer, one can see that the pointer is not indicating the current time but the scheduled time.

Although the present invention has been described above with reference to embodiments, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the invention. For example, it is not necessary to use an up-down counter in the timer control comparison circuit; it can be replaced with other means, and the buzzer sound can also be replaced with a light or a means of mechanically tapping the user's arm. It is possible.

As is clear from the above description, according to the present invention, it is possible to obtain an analog electronic clock equipped with an alarm device with a simple configuration. It is convenient and has great effects.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of an analog electronic timepiece according to the present invention. FIG. 2 is a circuit block diagram of an additional device for an analog electronic timepiece according to the present invention. 3...Hand movement pulse generation circuit, 4...Switching circuit,
18...Input signal generation circuit, 28...Fast forward pulse generation circuit, 33...Timer control circuit, 36...
...Alarm device.

Claims (1)

[Claims] 1 Oscillation circuit, frequency dividing circuit, hand movement pulse generation circuit,
In an analog electronic watch having a drive circuit and a step motor, an input signal generation circuit generates an input signal in response to operation of an external operating member, a fast-forward pulse generation circuit generates a fast-forward pulse, and a fast-forward pulse generation circuit generates a fast-forward pulse in response to the input signal. A timer storage means 23 for storing a timer mode, a switching circuit that is controlled by an output signal of the timer storage means and applies the fast-forward pulse to the drive circuit, and a fast-forward pulse applied to the drive circuit and the switching circuit. a timer control circuit that inputs the blocked hand movement pulse, detects that the difference in the number of pulses between the fast forward pulse and the hand movement pulse becomes zero, and outputs a coincidence signal; and an alarm device that generates an alarm signal in response to a coincidence signal, and is configured to release the timer storage means in response to the coincidence signal, so that the step motor rotates in fast forward mode in response to the operation of the external operating member. An analog electronic watch with an alarm device, characterized in that the hands wait in advance, and when a scheduled time elapses, the alarm device generates an alarm signal and returns to normal hand operation.