JPS5940188A - Electronic clock with timer function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for checking the set 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 clock. 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 watch, a push-button external operating member 4 is used as a switch, the number of times N of pushing the external operating member 4 is stored in a circuit, and 1 push unit is set to 1 minute. It is configured to function as a timer after N minutes, and the timer setting time is displayed by the indicated position of the hand. The present invention relates to a method for storing in a circuit the zero point of the timer setting time display using the pointer in such an analog electronic timepiece with a timer.

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.

Each component in FIG. 2 will be explained below.

Oscillation circuit 11 Frequency divider circuit 21 Frequency divider circuit 6. Chattering prevention circuit6. Step motor drive pulse shaping circuit 8. The step motor 90 wheel train 1o and the hour, minute, and second buttons 11 are well known in the case of a quartz analog watch that uses a crystal oscillator as a time reference source, so a detailed explanation will be omitted.

4 is a bushing-type external operating member; bushings L,
When the power is turned on, the terminal α, which is normally pulled down to 'Low', becomes 'H1'. 5 is a crown-type external operating member, which has three states: 1st stage, 2nd stage, and 3rd stage;
In the first stage, both the terminal 1 and the terminal C maintain "L Ow"', in the second stage, the terminal becomes 'H1', and in the third stage, the terminal C becomes 'Hi'. Furthermore, the third stage is configured so that the hour and minute hands can be set to gold 1.

The switch control circuit 7 outputs a signal Sσ' which instantaneously becomes 'H1' when the external operating member 4 is pushed, and a signal Sσ' which becomes 'L O' when the external operating member 5 is in the first and third stages. N”
A signal sb which becomes 'H1'' when the second stage is reached, and a signal SA' which momentarily becomes 'H1' when the external operating member 5 is operated from the first or third stage to the second stage. External operation member 5
The signal St? is 'LOW' when it is in the first and second stages and becomes 'H1' when it is in the third stage. Outputs .

12.13, 14, 15, 16.17 are part of the timer.

Seconds counter 12 indicates cp when the timer is started.
It is a sexagesimal counter that counts the IHz signal φ, which is input from the terminal, and outputs one signal φi from the Cα terminal.
It is reset when the signal Sh' input to the R terminal becomes "H:L!".

The minute counter 13 is a sexagesimal up/down counter that is incremented by the timer setting signal Se and decremented by the one-shot signal φi, and is reset when the signal Sb' becomes H1'', and when the state changes from 59 to 0. Up carry UOα becomes “Hi” momentarily, and when the state changes from 0 to 59, down carry Dca momentarily becomes “Hi”.
The counter 14 is a binary up-down counter that is incremented by the up-carry Ucα of the minute counter 13 and decremented by the down-carry Ucd of the minute counter 13, and is reset when the signal sh' becomes "Hi". .

The timer detection circuit 15 detects "L" only at the moment when the states of the minute counter 13 and hour counter 14 both become 0.
Outputs a signal OT' which changes from "Ow" to "Hi", and a signal OT which becomes "H1" when the states of the minute counter 1°3 and hour counter 14 are both 0, and becomes "L Ow" in other cases. do.

The buzzer ringing circuit 16 is configured to ring the buzzer 17 for one second from the moment the signal 0τ' becomes 'H1'.

As the buzzer 17, a piezoelectric buzzer, an electromagnetic buzzer, etc. can be considered.

The second hand position counter 18 is a sexagenary counter for storing the indicated position of the second hand, counts the motor drive signal φM, and is reset when the signal Sc becomes "Hl". Therefore, if the hour and minute hands are moved when the second hand is at the 0 position 1a, the 0 on the second hand position counter 18 will match the 0 position of the second hand.

-The number output circuit 19 compares the states of the minute counter 13 and the second hand position counter 18, and outputs a coincidence signal Yθ which becomes "Hl" when the contents match and becomes "LOW" otherwise.

The internal time counter 20 has 8
It is a 192-decimal counter, counts the IHz signal φ1, and is reset when the signal Sb' becomes 'H1'.

The display time counter 21 is an 8192 binary counter for knowing the display position of the hour, minute, and second buttons 11, and is configured in exactly the same way as the internal time counter 20, and counts the motor drive signal φM, and when the signal Sh' is It is reset when it becomes "Hi".

The comparison circuit 22 compares the contents of the internal time counter 20 and the display time counter 21, and normally 'Low''.
When the state of the internal time counter 20 is greater than the state of the display time counter 21, the signal Sla becomes H1''.
rge, a signal sy which becomes 'H1' when the state of the internal time counter 20 and the state of the display time counter 21 match, and which becomes 'at LOW' otherwise.

The motor drive control circuit 23 receives a signal Sh, a signal OT, a signal Ye, a signal Large, and a signal Small.

Depending on the logic state of signal SY, IH2 signal φ1 or 16
The H2 signal φ16 is combined with the motor drive signal φλ and output. In addition, 24, 25, and 37 are inverters, and 26, 27, and 28
is an AND gate.

This concludes the explanation of each component in FIG. 2, and next, a specific example of the configuration of the motor drive control circuit 23 in FIG. 2 is shown and explained in FIG. 6.

In Fig. 3, 1.29, 30, 51 are innomata, 52, 35, 34, 3.5 are AND gates,
36 is an OR gate. Further, the signal sb output from the switch control circuit 7 to the terminal, the signal Ye output from the coincidence detection circuit 19 to the terminal, and the signal Ye output from the timer 0 detection circuit to the terminal. The signal OT is the terminal worker. & Signal Slarg output from the moss comparison circuit 22
θ is the terminal, and the signal SY output from the comparator circuit 22 is the terminal.

The 16Hz signal φ16 output from the frequency divider circuit 2 is output from the frequency divider circuit 2, and the IHz signal φ16 output from the frequency divider circuit 3 is output from the terminal connector.
Please input. Further, the terminal 01 for outputting the motor drive signal φM is connected to the second hand position counter 18, the display time counter 21, and the step motor drive pulse forming circuit 8.

The AND gate 32 determines that the signal sh is "H1" and the signal Y
When e is "LOW", 16H2 signal φ16 is selected as motor drive signal φM.

AND'r'-)556'! , (IIT issue sh is “LO
w'', the signal ye is 'IIQ W'', and the signal QT is 11 LOW'', the 16H2 signal φ16 is selected as the motor drive signal φM.

The AND gate 34 converts the 16H2 signal φ16 into the motor drive signal φ when the signal sb is LOW, the signal OT is HI, and the signal SLARGE is H1.
Select as M.

The AND gate 35 outputs j when the signal sb is LOW, the signal OT is H1'', and the signal sy is H1''.
The Hz signal φ is selected as the motor drive signal φM.

This concludes the explanation of FIG. 3, and next, the operation of the analog electronic timer 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 step to the second step during normal time display (the hour, minute, and second hands move in IH2 mode and display the current time), the signal SA/ is activated. Instantly “H”
1', the second counter 12, minute counter 13, hour counter 14, internal time counter 20, and display time counter 21 are reset, and at the same time, the signal sb becomes H1'', entering the timer set mode.

At this time, the minute counter 13 is reset, so it no longer matches the second position counter 18, and the -number output circuit 19
Therefore, the motor drive control circuit 26 uses the AND gate 32 shown in FIG. 16 Hz signal φ16 is selected as the motor drive signal φM until the signal φ16 coincides with 0 minutes).

During the timer set mode (Sb is 'H1'), when the external operating member 4 is pressed once, the signal Sα' instantly changes to U.
U,” and the set signal S is output from the AND gate 28.
e is output and the minute counter 13 is incremented. At this time as well, the minute counter 13 and the second hand position counter 18 do not match, the signal Yθ becomes "'Low", and the motor drive control circuit 23 uses the AND gate 32 in FIG. ) matches the contents of the minute counter 13 (in this case, until the second hand moves one step), the 16Hz signal φ16 is selected as the motor drive signal φM. That is, each time the external operating member 4 is pressed once and the minute counter 13 is moved up, the second hand is also advanced one step, and during the timer set mode, the second hand always indicates the position of the timer setting time. become.

The timer setting time is the hour counter Q.

When the output becomes 'H1', the set signal Se is no longer output from the AND gate 28, so the maximum time is 60 minutes.

After setting the timer, the external operating member 5 is returned from the second stage to the first stage, and the signal sh becomes 'D'.

When the signal becomes W'', the output of the AND gate 26 becomes H1'', which passes through the IHz signal reactor AND gate 27 and is input to the second counter 12, thereby starting the timer. The second counter 12 outputs one signal φi every minute after the timer starts, and the minute counter 13 is counted down.

At this time, the minute counter 16 and the second position counter 18 do not match, and the signal Ye becomes "Low", and the motor drive control circuit 26 determines that the indicated position of the second hand (second hand position counter 18) is equal to the minute counter from the AND gate 33G in FIG. -1
The 16 Hz signal φ16 is selected as the motor drive signal φM until it matches the contents of 3. Therefore, every time the remaining time on the timer reaches the 1 minute range, the second hand is fast-forwarded by 59 steps at 16 Hz and again indicates the position of the remaining time on the timer. In other words, the second hand always displays the remaining time counter 1 of the timer, except when it is being fast-forwarded at 16Hz.
3 and the hour counter 14 both become 0 (remaining time of the timer is 0), the signal OT output from the timer detection circuit 15 becomes ``H1'', and the output of the AND gate 26 becomes ``LOW''. Therefore, AND gate 27 is IH
2 signal φ1 is not passed and the timer is stopped. At the same time, the signal OT' becomes PAH1'' momentarily, and the buzzer ringing circuit 16 causes the buzzer 17 to ring for one second, indicating that the timer has ended.

When the timer ends (OT is -H1N>, if the internal time counter 20 has a larger value than the display time counter 21, the signal s1ar output from the comparison circuit 22
Since ge is 'Hi', the motor drive control circuit 23 uses the AND gate 34 in FIG. Select 16Hz signal φ16.

Also, when the timer ends, the internal time counter 20
If the value is smaller than that of the display time counter 21, both the signal S1arge and the signal Sy are "Low", so the motor drive control circuit 23 outputs the motor drive signal φλ until the signal Sy becomes 1 (1). (is not output.

Also, when the timer ends and the current time (internal time counter 20) and the displayed time (displayed time counter 21) match, the signal SY becomes "Hi" and the motor drive control circuit 23 performs the AND operation in FIG. Gate 65 allows I
Hz signal φ1 is selected as motor drive signal φM.

Therefore, when the timer ends, if the displayed time is behind the current time, the step motor 2 is driven at 16 Hz until the two match, and if the displayed time is ahead of the current time, the step motor 9 is driven at 16 Hz until the two match.
is not driven, and when the displayed u, y time coincides with the current time, the step motor 9 is driven at iHz, and the normal time display is returned.

With the above configuration as shown in Figure 2, the second hand indicates the timer set time while the timer is being set, the second hand indicates the remaining time of the timer while the timer is operating, and after the timer ends, the timer is activated so that the current time and the displayed time match. Analog electronic clocks become possible.

This concludes the explanation of this embodiment.

The present invention displays the timer setting time set by operating the external operation member for timer setting by the indicated position of the hand, so that the timer setting time can be checked visually and in an analog manner. This makes it possible to create an analog electronic clock with a timer that is easy to use without any complicated operations, and also has an excellent design since it does not require the use of a display element such as a liquid crystal, and is extremely effective in practical terms. .

In the embodiment of the present invention, an example has been described in which minute-by-minute settings are made by pressing the external operating member, but the timer can be set by pressing the external operating member for a long time (for example, 1 to 2 seconds or more). It is also possible to perform the setting quickly and correspondingly move the pointer forward quickly to display the set time.

In addition, in the embodiment of the present invention, the 16H2 signal is used as the signal for fast forwarding p of the step motor;
Not limited to the z signal, any signal of any frequency may be used as the fast-forwarding signal as long as one period is longer than the transient vibration period of the step motor.

Furthermore, in the embodiment of the present invention, when the timer ends and the time displayed on the display section is ahead of the current time,
Although it is configured to wait for the current time to catch up with the displayed time without driving the step motor, another method may be to reverse the step motor.

In the embodiment shown in FIG. 2, if the hands are set when the second hand is at the 12 o'clock position, the guideline for setting the timer will be displayed with the 12 o'clock position as the reference point.

As another example, when the button-type external operation member is pushed when the Rieuz-type external operation member is set to the third stage, the position of the second hand at that time can be set as the reference point when setting the timer. easily possible. This is done so that the second hand position detection circuit 1 is reset when terminal C and terminal α become high at the same time in Figure 2.
An AND gate may be provided between the signal and the E3c signal, and the output thereof may be input to the reset terminal of the seconds position detection circuit for one day.

Also, of course, the b terminal is not necessarily required in the present invention, and the crown-type external operating member 5 may be configured with only a first stage in normal operation and a second stage in nail-to-lock operation.

It is also possible to reset the seconds position detection circuit 18 by using a special operating method of the crown-type external operating member 5.

For example, immediately after pulling the C terminal to 'H1'G' Lo
When the setting is returned to w''' and immediately set to PAH1'' again, the seconds position detection circuit 18 is reset, and so on.

In this way, by involving the signal SC of the reset function for time adjustment in resetting the second position detection circuit 18 that determines the O point position when setting the timer, it can be easily and reliably performed, and the effect is big.

Furthermore, the present invention is applicable not only to timers but also to alarms. For example, in the embodiment of the present invention, the setting unit of the timer is 1 minute, but if this is set to 12 minutes or 24 minutes, the second hand will display 0:00 to 12:00 or 0:00 to 24:00. It can be used as a guideline for alarms.

[Brief explanation of drawings]

11th Δ...External view of an analog electronic watch with a timer using the present invention.21Δ...Block diagram showing an embodiment of the present invention.3rd Δ...2nd Motor drive control circuit 23 in the figure
Specific configuration example 1... Oscillation circuit 2.3... Frequency dividing circuit 4.5... External operation member 6... ...Chattering prevention circuit 7.
......Switch control circuit 8...
......Step motor drive pulse shaping circuit 9.
......Step motor 10...
... Wheel train 11 ... Hours, minutes, second hands 12 ... ... Seconds counter 13 ... ... Minutes counter 14 ... ...... Hour counter 15... Timer detection circuit 16...
...Buzzer ringing circuit 17...Buzzer 18...Second hand position counter 12...
......-Number output circuit 20...Internal time counter 21...
...Display time counter 22...
・Comparison circuit 23...Motor drive control circuit and above Applicant: Suwa Seikosha Co., Ltd.

Claims (1)

[Claims] It has a basic clock consisting of a reference oscillator (9), a frequency dividing circuit, a drive circuit (9), a time display section, and at least a timer part consisting of an input switch, a counter for the input signal, a buzzer drive circuit, and a buzzer, and the timer setting time and remaining time of the timer. 1. An electronic timepiece with a timer function, characterized in that the electronic timepiece is configured such that a reset function for time adjustment is involved in the zero position adjustment function of the metal dust 1.