JPH0515997B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mode display method of a multi-function hand display electronic timepiece.

In recent years, step motors have rapidly become smaller.
By driving multiple hands with independent step motors, the indicated position of each hand can be changed significantly within a short period of time, making it possible to create a watch-sized watch with multi-functional pointers comparable to digital watches. It is becoming more and more popular.

However, when making a pointer display electronic timepiece multi-functional, a problem arises in how to clearly indicate which function state (mode) it is currently in.

In a digital watch, the current mode can be easily indicated by blinking an indicator segment, but in an electronic watch with a pointer display, it is necessary to provide some kind of new mode display means.

One way to solve the above problem is to use a display element such as a liquid crystal panel to display the mode. Since parts such as a wheel train and a step motor cannot be placed below the display elements, the plane size becomes large. Furthermore, this method has the disadvantage that it is inferior in terms of design due to the discomfort between the display element such as a liquid crystal panel and the dial.

The present invention eliminates such drawbacks, and its object is to provide a multifunctional pointer display electronic timepiece equipped with a mode display means, which can be made smaller and thinner, and has an excellent design.

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

FIG. 1 is an external view of a pointer display electronic timepiece with chronograph function to which the present invention is applied.

The electronic timepiece with a chronograph function and a pointer display according to this embodiment is equipped with a 1/20 second hand 6, a second hand 7, and a minute hand 8 for chronograph use in addition to the hour, minute, and second hands 5 for time display. It is possible to display the measurement time at the same time. Also, the 1/20 second digit display section 9 is
If the chronograph hands 6, 7, and 8 stop in the STOP and SPLIT sections, the measured time will be displayed in 1/20 second digits, and the STOP mode will be displayed.
It is possible to display whether it is in SPLIT mode.

The operating method and functions of the electronic timepiece with chronograph function and pointer display according to this embodiment are as follows.

The external operation member 4 is reusable and can be used in the first stage, second stage,
The third stage has three states; the first stage is the chronograph operation state, the second stage is the state where the indicated position of each chronograph hand is adjusted, and the third stage is the hour, minute, and second hand 5 for time display. The movement of the hands is electrically and mechanically stopped in a well-known manner, and is mechanically connected to the minute hand setting mechanism at a well-known time.

The external operating member 1 functions as a start/stop switch that commands the start and stop of the chronograph when the watch 4 is in the first position, and as a zero position correction switch for the chronograph 1/20 second hand 6 when the watch 4 is in the second position. becomes.

The external operating member 2 functions as a split switch that commands the display of the elapsed time from the start of the chronograph (split time) when the watch 4 is in the first position, and as a chronograph minute hand when the watch 4 is in the second position. This is the 0 position correction switch of 8.

The external operation member 3 functions as a reset switch that commands the return of each chronograph hand to the 0 position when the watch 4 is in the 1st position, and serves as a 0 position correction switch for the chronograph second hand 7 when the watch 4 is in the 2nd position. becomes.

When the start stop switch 1 is operated when the watch 4 is in the first stage, the chronograph starts, the chronograph second hand 7 starts moving every second, and the chronograph minute hand 8 starts moving every minute. If you operate split switch 2 in this state,
The chronograph second hand 7 and the chronograph minute hand 8 stop moving, and the chronograph 1/20 second hand 6 reaches the split time position of the SPIT section of the display section 9 at 16Hz.
You can fast-forward and read the split time. In this state, if you operate split switch 2 again, the chronograph second hand 7 and chronograph minute hand 8 will move at 16Hz until they catch up with the measured time.
The chronograph 1120 second hand 6 will be fast forwarded at 16Hz from the split time position to the 0 position until the split switch 2 or start/stop switch 1 is operated again. is waiting at the 0 position. In FIG. 1, there are two 0's on the display 9, and the 0 position of the chronograph 1/20 second hand 6 is at the 12 o'clock position on the display 9. When the start/stop switch 1 is operated again in this state, the chronograph second hand 7 and the chronograph minute hand 8 stop moving, and the chronograph 1/20 second hand 6 moves to the stop time position of the STOP section of the display section 9. It is fast forwarded at 16Hz and the stop time can be read. FIG. 1 shows this state, and the stop time in the figure is 5 minutes 34 seconds 65 seconds. In this state, when the reset switch 3 is operated, each chronograph hand is fast-forwarded at 16 Hz to the 0 position and is in the reset state.

When the 0 position of the chronograph hands is distorted due to battery replacement, etc., when the crown 4 is moved to the second position, the 0 position of each chronograph hand is corrected. In this state, when the external operating member 1 (chronograph 1/20 second hand 0 position correction switch) is pressed once, the chronograph 1/20 second hand 6 moves by one step, and the internal chronograph 1/20 second hand 6 moves by one step. Since the 1/20 second hand position counter that stores the indicated position is reset, if the external operating member 1 is pushed several times and the chronograph 1/20 second hand 6 indicates the 0 position, the 1/20 second hand position will be reset. The contents of the counter also become 0, and the mechanically indicated position and the circuit contents match. Similarly, by operating the external operating member 2, the 0 position of the chronograph minute hand 8 can be changed, and by operating the external operating member 3, the 0 position of the chronograph second hand 7 can be changed.

This completes the explanation of the operating method and functions of the electronic timepiece with chronograph function and pointer display according to the present embodiment shown in FIG. Explain using.

In Figure 2, an oscillation circuit 10, a frequency dividing circuit 1
1. The frequency dividing circuit 12, the frequency dividing circuit 13, the drive pulse shaping circuit 14, the step motor 15, the wheel train 16, and the chattering prevention circuit 17 are well-known in the case of a quartz type analog watch that uses a crystal oscillator as a time reference source. There is, so I'll explain it briefly. The oscillation circuit 10 oscillates at 32768 Hz using a crystal oscillator as a source. The frequency dividing circuit 11 sequentially divides the oscillation signal of 32768Hz to 128Hz.
Outputs signal _φ128 . The frequency dividing circuit 12 sequentially divides the frequency of the 128Hz signal _φ128 and outputs a 16Hz signal _φ16 . The frequency dividing circuit 13 sequentially divides the frequency of the 16 Hz signal φ ₁₆ and outputs the 1 Hz signal φ ₁ , and is reset when the signal _SE input to the R terminal becomes "High". The drive pulse shaping circuit 14 outputs a step motor drive pulse P _M corresponding to the 1Hz signal _φ1 , and the step motor 1
5 is driven once every second. Step motor 15
consists of a coil, a stator, and a two-pole rotor. The chattering prevention circuit 17 removes chattering waveforms from the input signals of each switch, and since the terminals A, B, C, D, and E are pulled down to negative values, the signals S _A and S output from the chattering prevention circuit are _B , S _C , S _D , and S _E are normally “Low” and “High” only when each switch is closed.
becomes. (Signal S _A is when external operating member 1 is operated, signal S _B is when external operating member 2 is operated, signal S _C is when external operating member 3 is operated,
Signal S _D is the signal when Reuse 4 is in the second stage.
S _E becomes “High” when Reuse 4 is in the third stage. ) The switch control circuit 18 is constructed as shown in FIG. In Figure 3, 50, 51, 52, 5
3 is input to the CP terminal using a D type latch.
During the period when the CLOCK input is rising, the M output is
The _DM input appears as is, and at the falling edge of the CLOCK input, the M output holds the _DM input at that point. or,
54, 55, 56, 57, 58, 59, 60, 6
1, 62, 63, 64, 65 are AND gates, 6
6 is OR gate, 67 is inverter, 70 is NOR
It is a gate. Also, 68 and 69 are D type flip-flops, and the input level applied to the D input is
It is transmitted to Q and Q at the falling edge of CLOCK input to the CP terminal. The input terminals I ₉ to _{I 13} are connected to the signals output from the chattering prevention circuit 17 shown in FIG.
S _A , S _B , S _C , S _D , and S _E are respectively input, and the input terminal I ₁₄ has a 7:1 ratio of “High” and “Low” formed by the frequency divider circuit 11 in Fig. 2. 128Hz signal
₁₂₈ ′ enters. Output terminal O ₃ outputs a start/stop signal S _t that commands the start and stop of the chronograph, and output terminal O ₄ outputs a split signal S _P that commands the display of split time.
is output, a reset signal R _e that commands the return of the chronograph hand to the 0 position is output from the output terminal O ₅ , and a chronograph 1/20 is output from the output terminal O ₆ .
A signal S _e 1/20 that commands the correction of the 0 position of the second hand 6 is output, and the chronograph second hand 7 is output from the output terminal O _7.
The signal Sesec commanding the correction of the 0 position of the chronograph minute hand ₈ is output from the output terminal O8.
A signal S _e sec commanding the correction of the position is output.

The signal S _A ' is a signal obtained by differentiating the signal S _A at the rising edge using a latch 50 and an AND gate 54. Since the signal S _A is synchronized with the falling edge of the signal ₁₂₈ ' by the chattering prevention circuit 17 shown in FIG.
The signal S _A ' output from the AND gate 54 is a differential signal with a pulse width of 0.98 msec. signal as well
S _B ' is signaled by latch 51 and AND gate 55.
The signal SC' is a signal obtained by differentiating SB with respect to the rising edge, and the signal SC' is a signal obtained by differentiating the signal _SC with the rising edge of the latch 52 and the AND gate 56. Further, the signal SD' is a signal obtained by differentiating the signal _SD at the rising edge only when the start-stop signal S _t is "Low".

Start-stop signal S _t and split signal S _P
The logic state of does not change when the signal _D + _E output from the NOR gate 70 is "Low".
Also, the logical state of the split signal SP is determined by the AND gate 65 when the start/stop signal S _t is “Low”.
It does not change cyclically when . In addition, the reset signal R _e is generated when the signal SD′ is output or when the signal
It becomes "High" when the signal S _C ' is output when S _D + _SE is "High". Therefore, when attempting to set the hour and minute hands while the chronograph is operating, the watch 4 in Figure 1 moves from the first stage to the second stage.
The chronograph continues to operate even if it is pulled out to the third gear, and if the crown 4 is pulled out to the second gear while the chronograph is in a stopped state, the chronograph is reset.

A signal S _e 1/20 that commands the correction of the zero position of each chronograph hand. S _e sec.Semin is a start/stop signal S _t when the signal S _D is “High” by the AND gate 61.
It is not output unless it is “Low”.

This concludes the explanation of the switch control circuit 18.

The AND gate 19 is configured so that the start/stop signal S _t output from the switch control circuit 18 is “High”.
128Hz output from frequency divider circuit 18 only when
It functions as a switch that allows the signal _φ128 to pass through.

The 20Hz signal forming circuit 20 forms a 20Hz signal _φ20 from the 128Hz signal _φ128 that has passed through the AND gate 19, which serves as a reference for time measurement of the chronograph.

21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 6 are components for displaying the 1/20 second digit of the chronograph;
20 second hand position counter B, 24, coincidence detection circuit 2
5. The 1/20 second hand control circuit 27 also serves as a function selection means for selecting a mode display by inputting a spirit mode signal to _I4 .

The 1/20 second measurement counter 21 is a 20-decimal counter that counts the 20Hz signal _φ20 , and is reset when the reset _signal Re output from the switch control circuit 18 and input to the input terminal _I5 becomes "High".

The latch circuit 22 receives a split signal _SP output from the switch control circuit 18 and input to the input terminal _I4 .
During the period when is “Low”, 1/20 second measurement counter 21
The contents of 1/20 second measurement counter 21 are passed through as they are, and at the rising edge of the split signal S _P , the 1/20 second measurement counter 21
Retains the contents of.

The 1/20 second hand position counter A23 and the 1/20 second hand position counter B24 are counters for storing the indicated position of the chronograph 1/20 second hand 6, and the 1/20 second hand position counter B24 is a counter for storing the indicated position of the chronograph 1/20 second hand 6. A chronograph 1/20 that counts the drive signal φ _M 1/20 and outputs it from the switch control circuit 18 and inputs it to the input terminal I ₆ .
It is reset by the 1/20 second hand 0 position correction signal S _e 1/20 which commands correction of the 0 position of the second hand. 1/20 second hand position counter A23 is 1/20 second measurement counter 2
It is a 20-decimal counter configured exactly like 1. The 1/20 second hand position counter B24 is a binary counter corresponding to the flip-flop 69 in FIG.

The coincidence detection circuit 25 compares the contents of the latch circuit 22 and the 1/20 second hand position counter A23, and the contents of the flip-flop 69 and the 1/20 second hand position counter B24 in FIG. It outputs a match signal Y _e 1/20 which becomes "High" when this happens and becomes "Low" at other times.

The 1/20 second hand zero position detection circuit 26 detects whether or not the chronograph 1/20 second hand 6 indicates the 0 position, and both the 1/20 second hand position counter A23 and the 1/20 second hand position counter B24 It outputs a 0 position signal O1/20 which becomes "High" when the signal becomes 0 and becomes "Low" at other times.

1/20 second hand control circuit 27 is switch control circuit 1
The start/stop signal S _t and the split signal S _P outputted from 8, the coincidence signal Y _e 1/20 outputted from the coincidence detection circuit 25, and the 0 outputted from the 1/20 second hand zero position detection circuit 26. Output from the frequency dividing circuit 12 depending on the logic state of the position signal O1/20
The 16Hz signal φ ₁₆ is passed as the 1/20 second hand drive signal φ _M 1/20, or not. In this embodiment, when the start-stop signal S _t is "Low" or the split signal S _P is "High" and the match signal Ye1/20 is "Low", the start-stop signal S _t
“High” and split signal S _P is “Low” and 0
When the position signal O1/20 is "Low", a 16Hz signal _φ16 is output as the 1/20 second hand drive signal φM1/20. Therefore, the chronograph 1/20 second hand 6 normally waits at the 0 position and displays the contents of the latch circuit 22 only in the stop and split states on the display section 9 in FIG.
Display in the STOP section or SPLIT section.

28 is an OR gate.

The drive pulse shaping circuit 29 outputs a step motor drive pulse P _M 1/20 corresponding to the 1/20 second hand drive signal φ _M 1/20 or the 1/20 second hand 0 position correction signal S _e 1/20, and Drive 30.

The wheel train 31 is interlocked with a step motor 30, and is configured so that the chronograph 1/20 second hand 6 makes one revolution in 40 steps.

32, 33, 34, 35, 36, 37, 38,
39, 40, and 7 are components for displaying the seconds digit of the chronograph.

The second counter 32 is a sexagesimal counter that counts the 1 Hz signal φsec output from the 1/20 second counter 21, and is reset when the reset signal _Re output from the switch control circuit 18 becomes "High".

The latch circuit 33 allows the contents of the second counter 32 to pass through as is while the split signal S _P output from the switch control circuit is "Low".
At the rise of the split signal SP, the contents of the second counter 32 at that time are held.

The second hand position counter 34 is a sexagesimal counter for storing the indicated position of the chronograph second hand 7, and counts the second hand drive signal φ _M sec output from the second hand control circuit 36, and counts the second hand drive signal φ M sec output from the switch control circuit 18. It is reset by the 0 position correction signal S _e sec.

The coincidence detection circuit 35 compares the contents of the latch circuit 33 and the second hand position counter 34, and becomes "High" when the contents match, and "Low" otherwise.
A coincidence signal Y _e sec is output.

The second hand control circuit 36 outputs a 16Hz signal φ ₁₆ as the second hand drive signal φ _M sec when the coincidence signal Y _e sec output from the coincidence detection circuit 35 is “Low”.
Therefore, during normal chronograph measurement, the chronograph second hand 7 moves in 1 second steps and splits because the latch circuit 33 and the second hand position counter 34 do not match each other every time the 1 Hz signal φsec is input to the second counter 32. The hand stops at the time of split and stop, and moves at 16Hz until the contents of the latch circuit 33 and the second hand position counter 34 match when the split is released or reset.

37 is an OR gate.

The drive pulse shaping circuit 38 generates a second hand drive signal φ _M
sec or a step motor drive pulse P _M sec corresponding to the second hand zero position correction signal S _e sec to drive the step motor 39.

The wheel train 40 is configured to operate in conjunction with a step motor 39 so that the chronograph second hand 7 makes one revolution in 60 steps.

41, 42, 43, 44, 45, 46, 47,
Reference numerals 48, 49, and 8 are components for displaying the minute digits of the chronograph, and since each component is configured similarly to the component for displaying the seconds digits, a description thereof will be omitted.

If the above is configured as shown in Figure 2, 1/20 of Figure 1
When the second hand 6 is in stop mode, the display section 9 shows STOP.
It is possible to create a pointer display electronic watch with a chronograph function that displays the stop time in the SPLIT section of the display section 9 in the split mode.

This concludes the explanation of this embodiment.

In this embodiment, the 1/20 second hand 6 in FIG.
Although the display is configured to display the mode and the measurement time at the same time, it is also possible to provide a pointer dedicated to displaying the mode and driven by an independent step motor. In this case, the coincidence detection circuit 25 of FIG.
is separated into those related to measurement time display and mode display, and the 1/20 second hand position counter B24 is used as a mode display hand position counter, and the mode display hand position counter counts the signal that drives the mode display hand. The signal for driving the display hand is sent to the flip-flop 69 in FIG. 3 by a coincidence detection circuit.
It is only necessary to output it only when it is determined that the contents of the mode display hand position counter do not match.

According to the present invention, the mode can be displayed using a pointer without using a display element such as a liquid crystal panel. Therefore, parts such as a step motor and a wheel train can be arbitrarily placed under the dial, making it possible to make the dial smaller and thinner. It is possible to realize a multi-function pointer display electronic watch which is superior in design since it eliminates the strangeness of the display, and is easy to operate due to the mode display, which has an extremely large practical effect.

Furthermore, by configuring the mode display and its count display to be displayed at the same time using the same pointer, the count display and mode display can be operated with a single switch operation, making the operation easy.

Furthermore, since it can be seen at a glance which mode the displayed pointer display is in, it is possible to bring about the effect that the display is extremely easy to see.

[Brief explanation of drawings]

FIG. 1 is an overview diagram of a pointer display electronic timepiece with chronograph function to which the present invention is applied. FIG. 2 is a block diagram of the embodiment. FIG. 3 shows a specific configuration example of the switch control circuit 18 shown in FIG. 2. 6... Chronograph 1/20 second hand and mode display hand,
9... Chronograph 1/20 second digit display and mode display section, 21... 1/20 second measurement counter, 22...
... Latch circuit, 23 ... 1/20 second hand position counter A, 24 ... 1/20 second hand position counter B (mode display hand position counter), 25 ... Coincidence detection circuit,
26...1/20 second hand zero position detection circuit, 27...1/20
Second hand control circuit, 69...Flip-flop (mode formation counter) that outputs a split signal _SP .

Claims (1)

[Scope of Claims] 1. A pointer display electronic timepiece having a plurality of functions, at least a time measurement counter that displays measured time, a function selection means that selects a mode by inputting a function designation signal, and a function selection means that selects a mode based on the output of the function selection means. a pointer position counter that displays the selected mode; by connecting the time measuring counter and the pointer position counter in series and comparing the contents of the time measuring counter and the pointer position counter; An electronic watch with a pointer display that is characterized by displaying the measurement time and mode at the same time using the same pointer.