JPH0314149B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for checking a set amount when an analog electronic timepiece is provided with a timer.

There are various ways to easily add a timer to an analog clock. Although a display element such as a liquid crystal may be used to set the time of the timer, the structure for setting the time is complicated and it is not easy to use.

In Fig. 1, a switch 10 of an external operating member in an analog clock is, for example, a push button, and the number of times N of button presses is stored in a circuit, and if 1 push = 1 minute is set, a timer is set after N minutes. It is designed to function as a.

In this method, there is no way to clearly check the timer setting amount from the outside, and it is not clear whether the timer is set unless the timer is constantly notified by a buzzer during use. Also, it is not possible to know the set amount.

The present invention proposes a system in which the elapsed time of a timer can be determined by controlling the movement of the second hand when setting a timer with the help of an electronic circuit. That is, it is intended to control the movement state of the second hand 21 among the hour hand 21, minute hand 22, and second hand 23 shown in FIG.

FIG. 2 is a block diagram showing one embodiment of the present invention. Here, an example will be described in which the setting amount for the timer changes the amount of hand movement of the time display member in accordance with the change in the remaining time of the timer. In the example of a quartz watch using a crystal oscillator, the time standard 1 includes a frequency dividing circuit 2 (here, the frequency is divided to the minute, for example, necessary for the timer section 7), a motor drive circuit 4, a motor 5, The time display section 6, which includes hours, minutes, and a second hand that normally moves every second, has a well-known configuration. Here, an external operation member 10 is installed as a timer section 7.
Timer setting counter 1 by the signal from
1. A latch circuit 12 that stores the signal of the counter 11, a fast-forward signal counter 14 that fast-forwards the second hand in conjunction with the signal from the latch circuit 12, and a signal matching circuit 13 between the latch circuit 12 and the counter 14;
a second counter 16 that counts signals every second; detects coincidence between the output of the latch 12 and the second counter 16; and inputs a clock to the latch 12;
It has a signal matching circuit 15 that resets both the fast forward counter 14 and the second counter 16.
Buzzer circuit 8 with a timer that sounds the buzzer for a certain period of time when all the signals of the latch 12 become LOW, and the buzzer 9. Also, when there is a signal output from the latch 12, the control circuit 3 controls the output signal from the latch side. Signal control circuit 3 that makes a judgment and inputs it to the motor drive circuit 4
have.

The operation of the present invention will be briefly explained using this block diagram. The setting counter 11 counts the number of times the switch is input to the external operating member 10. The counter obtains a signal from the frequency dividing circuit 2 as necessary, but here the input is in units of minutes. The output of the counter is stored by the latch circuit 12, and the latch output is output in synchronization with the input clock signal output from the coincidence circuit 15. Here, the output of the latch 12 controls the control circuit 3, and the output of the coincidence circuit 13 drives the motor in rapid forward motion, for example, several times per second. Since the fast-forward counter 14 is involved in the signal for fast-forwarding the motor section, the match circuit 13 detects the match with the output of the latch circuit. The second counter 16 counts seconds in order to control the fast-forward counter 14 and output a clock input to the latch 12, and detects coincidence of the fast-forward signals of the fast-forward counter 14 mentioned above. For example, when the timer is set to N=4 minutes, the output of the latch is 4, and the match circuit 15 detects a match every 4 seconds via the second counter 16. Since the output of coincidence 15 resets the second counter 16 and fast forward counter 14 each time, a fast forward counter signal corresponding to 4 seconds is output from 14, which starts the control circuit 3 and causes the motor to fast forward. . Similarly latch 12
When the output reaches 3 (minutes), the fast forward signal changes to 1 for 3 seconds.
It will be output from 4. The number of steps in which the motor is sequentially fast-forwarded is reduced, and the number of steps in which the motor is fast-forwarded as a timer is reduced.

3 and 4 show electronic circuit diagrams and timing charts mainly consisting of the timer section shown in FIG. 2.

In addition to the configuration shown in FIG. 2, the configuration shown in FIG.
9, 30, 31, 32, 33, 34, 35, 36
and AND gates 28 and 37, AND gate 27 that sounds the buzzer and inputs a signal to the motor, and NOR gates 25 and 26 that constitute the switch control circuit 3.
Inverter 40, D type flip-flop 43 as part of motor drive circuit 4, AND gate 4
1, 42, 44, 45, OR gate 49, 46,
47, a coil 48 as the motor section 5, an input chattering prevention circuit 24 to the switch 10 of the external operation section
It is composed of etc.

The basic construction and operation are the same as explained in the block diagram. First, under normal conditions when the switch 10 is not turned on, the output e of the switch control circuit 3 is LOW.
The AND gates 44 and 45 are set to High, and a 1/2 Hz signal with a phase difference is input to the gates 44 and 45, and the motor coil 48 is operated via the OR gates 46 and 47 to accurately drive the motor every second. Drive. Since this is a well-known motor drive circuit, details are omitted.

Next, when the switch 10 is turned on N times, that is, when it starts operating as a timer, the signal passes through the chattering prevention circuit 24 and increases the setting counter. The counter has a well-known structure, so the details will be omitted, but it is driven in minutes as a clock input. Therefore, it is set as an N minute counter. Signal N is input to switch 12.

Next, the output signals Q1, Q2, Q3 of the latch 12,
Output signals C1, C2, C3, C4 corresponding to Q4
In order to output a signal for fast-forwarding the motor, the matching circuit shown in FIG. A signal is input to a D-type flip-flop 43, formed into a signal, and input to gates 41 and 42.
Motor coil 48 via OR gates 46 and 47
is output to. The switch control circuit 3 is put into the set state by the input switch 10, and the NOR gate 2
Since the e signal of No. 6 is set to Hight, the AND gates 41 and 42 are set to Hight, so that the output signal b of the matching circuit 13 can be accepted in this way. In other words, the motor 5 is operated by a signal for N fast-forward steps as a hand movement for operating the motor.

Next, the second counter 16 inputs the second signal as a clock input, and the output C1 of the latch 12,
Matching circuit 1 detects the coincidence of N as a second counter for the N (minute) signal composed of C2, C3, and C4.
5, the output of the AND gate 37 is the output g of the NOR gates 38 and 39 for set and reset.
As a result, the second counter 16 is reset and at the same time, the motor fast-forward signal fast-forward counter 14 is reset. Here, since N motor fast-forward signals are coming, N fast-forward signals are output each time. In other words, N fast-forward signals are repeatedly output.

In this state, by inputting the output g of the NOR gate 39 to the latch 12 as a clock input, the output from the counter 11 of the latch 12 is temporarily stored in the latch, and the latch output is output as a synchronized signal. It is connected.

In this way, for one minute there are N fast-forward signals (for example,
When N=4, fast-forwarding 4 times and fast-forwarding again after 4 seconds) is repeatedly output. After one minute, the output of the setting counter 11 will be N-1, so
Since the latch outputs Q1, Q2, Q3, and Q4 output N-1 output signals, the counter 14 and matching circuit 13 output N-1 (3
The counter 16 and matching circuit 15 repeatedly output a fast-forward signal of N-1 (3 minutes). Similarly, in the next minute, N
-2 and the output b of the gate 28 as a fast forward signal decreases every minute. Therefore, the motor and the second hand move in rapid forward motion in N seconds steps every minute with respect to the set value N, as a hand movement step per time.
Fast forward for 1 second, and the fast forward step is N, N-
1, N-2...3, 2, 1 seconds, and for the last minute, the hands move in normal steps every second. In this way, when all the set values as a timer are completed, that is, the latch 12 as a memory part of the setting counter 11
When the outputs C1 to C4 of all become LOW,
The output f of the AND gate 27 becomes High, and the buzzer ringing circuit 8 having a timer is started, and the buzzer 9 is activated.
to sing. At the same time, the output f of the AND gate 27 is input to the NOR gate 26 of the switch control circuit 3 to notify that the timer setting has been completed, so that the motor drive circuit section switches to normal hand movement every second.

In the embodiment of the present invention, the movement of the pointer is changed as the timer setting value is decreased, that is, the remaining time is changed, but it is also possible to simply display the same rapid forward step movement of the hand at the timer setting value until the timer ends. Part of the configuration of the present invention may be omitted, and in FIG. 3, the timer section includes a setting counter 11 and a motor fast-forward signal counter 14.
The second counter 16 and the coincidence circuit 15 are no longer necessary. Although the description is omitted since it is basically the same as the present invention, the number of times N of timer setting is constant as the output value N of gate 28 of matching circuit 13 in FIG. The hands move in fast forward motion in N steps.

In this embodiment, when the count value of the set counter is N, the frame A in FIG. A latch circuit 12, matching circuits 13 and 15, a motor fast-forward signal counter 14, and a second counter 16 are used in the enclosed part, and an AND is used as a detection means to detect when the set counter is decremented and reaches the initial value. Gate 27 is used.

In the embodiment of the present invention, the number of operations by the external operating member is set in minutes, and the hand movement is set in seconds steps. However, for example, the timer may be used to set the hours, and the hands are moved in N second fast-forward steps, replacing them with N hour settings. It is free to make the time display member correspond to any function of the timer. The practical timer setting for general users is often minutes;
The external operating member and the setting values for the second hand movement described in the present invention are extremely easy to use and have high practical value.

As described in detail above, by adding an electronic circuit configuration that allows the movement of the second hand to correspond to the setting amount of the timer in an analog quartz electronic watch with a timer, the setting amount of the timer can be visually confirmed. Therefore, the timer can be easily configured without a special digital display, and the user can also see the set values visually, so they can use it with peace of mind, making it possible to realize multi-function analog clocks.

[Brief explanation of the drawing]

FIG. 1: An explanatory view of the external appearance of a timer display clock using the present invention. FIG. 2: A block diagram showing an embodiment of the present invention. FIG. 3: Partial electronic circuit diagram of FIG. 2. FIG. 4: A partial timing chart of FIG. 3. DESCRIPTION OF SYMBOLS 1... Time standard, 2... Frequency division circuit, 3... Signal control circuit, 4... Motor drive circuit, 5... Motor, 6... Time display, 7... Timer section, 8...
Buzzer ringing circuit, 9... Buzzer, 10... External operating member (switch), 11, 14, 16... Counter, 12... Latch circuit, 13, 15... Matching circuit.

Claims (1)

[Claims] 1. It has a time standard, a frequency dividing circuit, a motor drive circuit, a motor, a time display section equipped with a pointer, a timer circuit section, and a notification means, and the timer circuit section comprises:
A set counter in which a timer time is set as a count value by input from an external operating member and the count value is decremented every predetermined time unit, and the count value is N according to the count value of the set counter. , comprising means for outputting N fast-forward signals to the motor drive circuit every N seconds, and detecting means for detecting that the set counter has become intoxicated and has reached its initial value. An electronic clock with a timer.