JPS5935174A - Electronic clock with timer - Google Patents

Abstract

PURPOSE:To eliminate a display element such as a liquid crystal or the like, by displaying the residual time of a timer by the hand moving amount of a hand to make it possible to ascertain the residual time of the timer by visual sensation in an analogue manner without performing complicated operation. CONSTITUTION:When an external operation member 4 is pushed once during the operation of a timer, the output signal of an AND gate 24 comes to H and the output signal Sconf of a gate 25 comes to H. By this signal Sconf, a second hand position counter 17 and an internal time counter 20 are reset. At this time, a motor driving circuit 22 selects a 2Hz signal phi2 as a motor drive signal SM until the content of a minute counter 12 is coincided with that of a second hand position counter 17 and the output signal Ye1 of a coincidence detecting circuit 18 comes to H. That is, when an external operation member 4 is pushed once during the operation of the timer, the second hand is moved in the rapid sending of 2Hz only over the second same to the residual minute of the timer to make it possible to display the residual of the timer. As the result, an electronic timepiece with a timer excellent in a design can be fabricated without using a liquid crystal or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for checking the remaining time of a timer when a timer is attached to an analog electronic watch.

There are various ways to easily add a timer to an analog electronic watch. Although the set time of the timer may be displayed using a display element such as a liquid crystal, the structure for setting the time is complicated and it is not easy to use. Furthermore, the design is inferior due to the sense of incongruity between the display element such as a liquid crystal display and the dial plate.

Figure 1 shows that in an analog electronic clock, the external operating member 4 of the set of pushers is used as a switch, the number of times the external operating member 4 is pressed is Nt - the number of times the external operating member 4 is pressed - the number of times the external operating member 4 is pressed - the number of times the external operating member 4 is pressed - the circuit is set as 1 push = 1 minute. In some cases, the device is configured to function as a timer after N minutes.

However, this method has the drawback that there is no way to clearly check the remaining time on the timer from the outside.

The present invention U1 eliminates such drawbacks and its purpose is to:
To provide an analog electronic clock with a timer that allows the remaining time on the timer to be visually confirmed, is easy to use, and has an excellent design.

The present invention will be described in detail below based on Examples.

FIG. 2 is a block diagram showing one embodiment of the present invention. Below, each component of FIG. 2 will be explained.
Frequency divider circuit 21 Frequency divider circuit 3. Step motor drive pulse shaping circuit 7. Step motor 81 Wheel train 99 Hour, minute, second hand 1
0 is well known from the example of a quartz analog watch that uses a crystal oscillator as a time reference source, so a detailed explanation will be omitted.

Reference numeral 4 denotes a push-type external operating member, and when it is pushed, the terminal α, which is normally pulled down to ``LOW'', becomes H1''. 5 is a crown-type external operating member, which has 5 states: 1st stage, 2nd stage, and 3rd stage;
In the second stage, both terminals S and C maintain LOW#, and
In the third stage, the terminal becomes "H1". Also, in the third stage, time
- It is constructed so that the 7-minute hand can be set.

The switch control circuit 6 outputs a signal Sa' which is normally "LOW" and instantaneously becomes "H1" when the external operating member 4 is pushed, and a signal Sa' when the external operating member 5 is in the first and third stages. Signal sb that is “LOW” and becomes “uHl” at the second stage
When the external operating member 5 is operated from the 1st and 3rd stages to the 2nd stage, it is normally "L OW" and instantly becomes "H1".
When the external operating member 5 is in the first and second stages, it outputs a signal Sb' which becomes "LOW" and a signal Sc which becomes H1" when it is in the third stage.

11. 12, 13, 14, 15, and 16 are part of the timer.

When the timer is started, the second counter 11
It is a sexagesimal counter that counts the jHz signal φ input from the terminal, outputs one signal φ- from the 0α terminal, and R
It is set when the signal Sb' input to the terminal becomes 'H1'.

The minute counter 12 is incremented by the timer setting signal S set and decremented by the one-shot signal φi.
The up/down counter is 6, and the signal Sh' is -H.
When it becomes 1", it is reset, and when the state changes from 59 to l, up-carry Ucα momentarily becomes "Hi".
When the state changes from 1 to 59, the down carry 'Dcα instantaneously becomes uHi''.

The hour counter 13 is incremented by the up-carry TJcα of the minute counter 12, and is incremented by the up-carry DCα of the minute counter 12.
This is a binary up/down counter that is down by 1, and is reset when the signal Sb' becomes H1''.

The timer l detection circuit 14 detects "L" only at the moment when both the minute counter 12 and the hour counter 13 become l.
When the signal φ'T changes from "OW" to 1'H1"' and the states of the minute counter 12 and hour counter 13 are both \"
Signal φ that is “Hi” and “LOW” at other times
Output T.

The buzzer ringing circuit 15 is configured to ring the buzzer 16 for one second from the moment the signal φ'T becomes 'H1'.

As the buzzer 16, a piezoelectric buzzer, an electromagnetic buzzer, etc. can be considered.

The second hand position counter 17 is a sexagesimal counter for storing the indicated position of the second hand, counts the motor drive signal SM, and is reset when the signal S oonf becomes H1''.

Note that the signal S oonf is generated when the output signal φT of the timer l detection circuit 14 is "LOW" and the output signal sh of the switch control circuit 6 is "LOW", and the output signal Sα' is °'H.
Only when it is 1", it becomes PAH1". Always 'LOW' at other times
'.

- The number output circuit 18 compares the states of the minute counter 12 and the second hand position counter 17, and outputs a coincidence signal Ye that is "Hl" when the contents match and "LOW" otherwise. .

The internal time counter 19 is 8 to know the original time.
It is a 192-decimal counter, counts the IHz signal φ1, and is reset when the signal +3 aonf becomes "Hl".

The display time counter 20 is an 8192 binary counter for knowing the display position of the hour 2 minutes 9 second hand 1 degree, and is configured exactly the same as the internal time counter 19, counts the motor drive signal SM, and the signal S conf is " It will be reset when it becomes H3P.

- The multiple building output circuit 21 compares the states of the internal time counter 19 and the display time counter 20, and when the contents match, the coincidence signal Y becomes ``H1'' and becomes LOW otherwise.
e, is output.

The motor drive control circuit 22 receives a signal 5QOnf and a signal Yθ.
1, the IH2 signal φ1 or the 2Hz signal φ2 is output as the motor drive signal SM depending on the logic state of the signal Ye.

Note that 23, 24, 25, 26, 27.28 are AND gates, and 29, 30.31 are inverters.

This concludes the explanation of each component shown in FIG. 2, and next, a specific example of the structure of the motor drive control circuit 23 shown in FIG. 2 will be shown and explained in FIG.

In the third white circuit, 32 is a flip-flop circuit with a reset terminal, and the states of Q and T change at the fall of the signal input to the OP terminal. 33°34 is the inverter, 35
．． 36 is an AND gate, and 37 is an OR gate. or,
The terminal 1 receives a signal Ye output from the coincidence detection circuit 18.
1, the signal S aonf is sent to the terminal 2, and the signal S aonf is sent to the terminal 3.
The signal φ2 output from the frequency divider circuit 2 is input to the terminal 4, the signal φ1 output from the frequency divider 3 is input to the terminal 4, and the signal Ye output from the coincidence detection circuit 21 is input to the terminal 4. . Terminal 0, which outputs the motor drive signal SM, is connected to the second hand position counter 17, the display time counter 20, and the step motor drive pulse forming circuit 7.

FIG. 4 shows a timing chart of FIG. 3, and the operation of FIG. 3 will be explained.

The AND gate 35 causes the signal S1 to become "H1" and the signal ye to "Hl" when the signal S conf input to the R terminal of the 7-lip-flop circuit 32 momentarily becomes "H1".
The 2H2 signal φ is selected as the motor drive signal E3w until .

The AND gate 36 selects the IH2 signal φ as the motor drive signal SM when the output signal S1 of the flip-flop circuit 32 is “LOW” and the signal Ye2 is “H1”.

This concludes Figure 3. After completing the explanation of FIG. 4, the operation of the analog electronic timepiece with a timer according to this embodiment will be explained with reference to the block diagram of FIG.

When the external operating member 5 is pulled out from the first stage to the second stage during normal time display (the hour, minute, and second hands move at IHz and display the current time), the signal sb' is instantaneously activated. H1”
Then, the seconds counter 11, minute counter 12, and hour counter 13 are reset, and at the same time, the signal S6 becomes "Hl".
” and enters timer set mode.

During the timer set mode (Sh is "H2N>", when the external operation member 4 is pressed once, the signal Sal becomes 1H1# momentarily, and the output of the AND gate 23 becomes 1'H1).
”, and the set signal S set is output from the AND gate 2B.
is output and the minute counter 12 is set. That is, 1 push unit is set to 1 minute.

Incidentally, the setting time of the timer is 60 minutes at maximum since the set signal S set is no longer output from the AND gate 28 when the Q1 output of the hour counter 13 becomes "Hl".

When the timer setting 7 is completed and the external operating member 5 is returned from the second stage to the first stage, and the signal sh becomes uLOW, the output signal φT of the timer l detection circuit also becomes ILOW. , the output signal i9T of the AND gate 26 is 1
The signal becomes H1#, and the 1Hz signal φ passes through the AND gate 27 and is input to the second counter 11, starting the timer. The second counter 11 outputs one compensation signal φi every minute after the timer starts, and the minute counter 12
down. Note that, after the timer starts, when the external operating member 5 is pulled out to the second stage, the timer is reset.

When the external operating member 4 is pressed once while the timer is operating, the output signal of the AND gate 24 becomes "Hl", and the AN
The output signal S conf of the D gate 25 becomes "Hl". This signal Soonf causes the second hand position counter 17, internal time counter 19, and display time counter 2 to
0 is reset. At this time, the motor drive control circuit 22
, the contents of the minute counter 12 and the second hand position counter 17 match, and the output signal Ye of the -number output circuit 18 is "H1".
2 Hz signal φ2 as motor drive signal SM until
Select as. That is, when the external operating member 4 is pressed once while the timer is operating, the second hand moves at a fast forward speed of 2 Hz by the same number of seconds as the remaining time on the timer, and displays the remaining time on the timer.

After the remaining time of the timer is displayed, the internal time counter 19 and the displayed time counter 20 do not match.
- Output signal Ye2 of several output circuit 21 becomes 'LOW''', motor drive control circuit 22 internal time counter 19
The motor drive signal By is not output until the time matches the contents of the display time counter 20. That is, the clock is stopped until the current time matches the time displayed on the clock.

When the internal time counter 19 and the display time counter 20 match, the output signal Ye of the match detection circuit 21 becomes °'H1.
”, and the motor drive control circuit 22 selects the IH2 signal φ1 as the motor drive signal SM.

When the minute counter 12 and hour counter 13 both reach l (remaining time of the timer is 1), the timer l detection circuit 14
The signal φT output from the AND gate 26 becomes '°H1', and the output signal ST of the AND gate 26 becomes 'LOW'.
The ND gate 27 does not allow the IHz signal φ1 to pass, and the timer stops.

At the same time, the signal φ'T becomes "H1" momentarily, and the buzzer ringing circuit 15 causes the buzzer 16 to ring for one second to notify that the timer has ended.

If the external operating member 4 is pressed once while the timer is operating with the construction as shown in FIG. 2, an analog electronic timepiece with a timer that displays the remaining time of the timer by the amount of rapid advance of the second hand can be obtained.

This concludes the explanation of this embodiment.

The present invention displays the remaining time of the timer by the amount of movement of the hand after the timer starts, so that the remaining time of the timer can be confirmed visually and in an analog manner, and moreover, it can be easily confirmed without complicated operations unlike digital timers. Moreover, since it does not require the use of a display element such as a liquid crystal, it is possible to create an analog electronic clock with a timer that is excellent in design, and is extremely effective in practical terms.

In the embodiment of the present invention, when setting the timer, 1 push of the external operating member 4 is set at 1 minute. 2 seconds) or setting a timer in 10 minute increments is optional.

In addition, in the embodiment of the present invention, a 2Hz signal is used as a signal for rapid traverse of the step motor, but it is not limited to a 2Hz signal, and as long as one cycle is larger than the transient vibration period of the step motor. , any frequency signal may be used as the fast-forwarding signal.

Further, in the embodiment of the present invention, the timer reset after the timer is started is performed by pulling out the external operating member 5 from the first stage to the second stage, but the external operating member 4 is pulled out for 1 to 2 seconds. It may be configured to be reset by continuing to press the button.Also, in the embodiment of the present invention, the timer is set to a maximum of 60 minutes, but the maximum set time can be freely changed to 10 minutes, 12 hours, etc.

Furthermore, in the embodiment of the present invention, after the remaining time of the timer is displayed, the displayed time on the display section is ahead of the current time, so the current time is changed to the displayed time (without driving the step motor).
The configuration is such that it waits for this to catch up, but as another method, the step motor may be reversed.

[Brief explanation of the drawing]

Fig. 1: External view of an analog electronic watch with a timer using the present invention. Fig. 2: Block diagram showing one embodiment of the present invention Fig. 3: Motor drive control circuit 22 in Fig. 2
Specific configuration example. Fig. 4: Timing chart of Fig. 3. 1... Oscillation circuit 293... Frequency dividing circuit 4.5... External operation member 6... Switch control circuit 7...・
......Step motor drive pulse shaping circuit 8...Step motor 9...
...... Wheel train 10... Hour, minute, second hand 11... Second counter 12... Minute counter - 13...... Hour counter - 14...... Timer\Detection circuit 15...
...Buzzer ringing circuit 16...Buzzer 17...Second hand position counter 18...
......-Number output circuit 19...Internal time counter 20...
...Display time counter 21...
・-Multiple configuration circuit 22...Motor drive control circuit 1st

Claims (1)

[Claims] 1. It has an oscillation circuit 2 frequency divider circuit, a step motor drive pulse shaping circuit, a step motor, a time display section, and a timer circuit section, and when the external operation member is operated after the timer starts, the timer starts. An electronic timepiece with a timer, characterized in that the remaining time is displayed by a pointer of the time display section. 2. The electronic timepiece with a timer according to claim 1, characterized in that the remaining time of the timer is displayed by the amount of movement of the second hand.