JPH0782094B2 - Pointer display electronic watch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mode display method for an electronic timepiece displaying a multifunctional pointer.

[0002]

2. Description of the Related Art In recent years, miniaturization of stepping motors has rapidly progressed, and by driving a plurality of pointers by independent stepping motors, it becomes possible to greatly change the pointing position of each pointer within a short time. A multifunctional pointer display clock comparable to a digital clock is being commercialized in a watch size.

However, in order to make the pointer display electronic timepiece multi-functional, there is a problem with means for clearly indicating which function (mode) the function is currently in.

In the digital timepiece, the current mode can be easily specified by blinking the indicator segment, but in the pointer display electronic timepiece,
It is necessary to newly provide some mode display means.

[0005]

However, in the conventional pointer display electronic timepiece, a method of performing mode display using a display element such as a liquid crystal panel can be considered. In this method, a watch size is realized. In consideration of thinning at this time, there is a drawback that the plane size becomes large because parts such as a train wheel and a step motor cannot be arranged under a display element such as a liquid crystal panel. In addition, this method has a drawback in that it is inferior in design due to the discomfort between the display element such as a liquid crystal panel and the dial.

Therefore, the present invention eliminates such drawbacks, and an object thereof is to provide a multifunctional pointer indicating electronic timepiece having a mode indicating means, which can be made small and thin and which is excellent in design. is there.

[0007]

A pointer display electronic timepiece according to the present invention is a pointer display electronic timepiece having a plurality of functions,
A function selection means for selecting a mode by inputting a function designation signal, a measurement counter for storing a measurement time, and the measurement
Display means for displaying the time and a switch for driving the display means.
Table for storing the step motor and the indicated position of the display means
Position memory counter, the measurement counter and the table
Compare the contents of the position memory counters,
Match detection times that output a match detection signal when the contents match
And a display means for displaying the measurement time and the mode.
Are configured to display simultaneously with the same pointer,
The mode of the step motor is changed by the function selecting means.
When selected, before the match detection signal is output
It is characterized in that it is controlled so as to drive the display means .

[0008]

EXAMPLES The present invention will be described in detail based on the following examples.

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

The chronograph function indicating electronic timepiece with a chronograph function of this embodiment is provided with a chronograph 1/20 second hand 6, a second hand 7 and a minute hand 8 in addition to a time display hour / minute / second hand 5. And chronograph measurement time can be displayed at the same time. In addition, the display unit 9 for the 1/20 second digit has a STOP unit and an S
When the chronograph hands 6, 7, 8 are stopped by the PLIT section, it is possible to display the measurement time of 1/20 second digit and to display whether it is the STOP mode or the SPLIT mode. .

The operation method / function of the chronograph function indicating electronic timepiece with a chronograph function of this embodiment is as follows.

The external operating member 4 has three states, that is, the first stage, the second stage, and the third stage in the crown, and the chronograph is in the operating state in the first stage, and the indicated position of each chronograph hand is corrected in the second stage. In the third state, the movement of the hour, minute and second hands 5 for displaying the time is stopped electrically and mechanically as well known, and is mechanically connected to the well known mechanism for adjusting the minute hand.

The external operating member 1 serves as a start / stop switch for instructing the start and stop of the chronograph when the crown 4 is in the first step, and when the crown 4 is in the second step, the chronograph 1/20 second hand 6 is at the 0 position. It becomes a correction switch.

The external operation member 2 serves as a split switch for instructing the display of the elapsed time (split time) from the start of the chronograph when the crown 4 is in the first stage, and when the crown 4 is in the second stage. It serves as a 0 position correction switch for the minute hand 8.

The external operation member 3 serves as a reset switch for instructing the return of each chronograph hand to the 0 position when the crown 4 is in the first stage, and when the crown 4 is in the second stage, the chronograph second hand 7 is set to 0. It becomes a position correction switch.

When the start / stop switch 1 is operated while the crown 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. When the split switch 2 is operated in this state, the chronograph second hand 7 and chronograph minute hand 8 stop moving, and the chronograph 1 /
The 20-second hand 6 is fast-forwarded at 16 Hz to the split time position of the SPLIT section of the display section 9, and the split time can be read. In this state, if the split switch 2 is operated again, the chronograph second hand 7 and chronograph minute hand 8 will move to the measurement time 16
It is fast forwarded at Hz and then again every second and every minute, and the chronograph 1/20 second hand 6 is fast forwarded at 16 Hz from the split time position to the 0 position until the split switch 2 or the start / stop switch 1 is operated again. Is waiting at the 0 position. Although there are two 0s on the display 9 in FIG. 1, the 0 position of the chronograph 1/20 second hand 6 is the 12 o'clock position of the display 9. When the start / stop switch 1 is operated again in this state, the chronograph second hand 7 and chronograph minute hand 8 stop moving, and the chronograph 1/20 second hand 6 moves to the S part of the display section 9.
The stop time can be read by being fast-forwarded at 16 Hz to the stop time position of the TOP section. Figure 1 shows this state, and the stop time is 5 in the figure.
Minutes 34 seconds 65. If the reset switch 3 is operated in this state, each chronograph hand will move 1 to the 0 position.
Is fast forward 6H _z in the reset state.

When the 0 position of the chronograph hands is reached due to battery replacement or the like, when the crown 4 is moved to the second stage, the 0 position of each chronograph hand is corrected. In this state,
When the external operation member 1 (chronograph 1/20 second hand 0 position correction switch) is pushed one time, the chronograph 1/20 second hand 6 is moved by one step and the indicated position of the internal chronograph 1/20 second hand 6 is stored. The 1/20 second hand position counter is reset, so when the external operating member 1 is pushed several times and the chronograph 1/20 second hand 6 indicates the 0 position, the content of the 1/20 second hand position counter also becomes 0. The mechanical pointing position and the circuit contents match. Similarly, the 0 position of the chronograph minute hand 8 can be changed by operating the external operating member 2, and the 0 position of the chronograph second hand 7 can be changed by operating the external operating member 3.

The operation of the chronograph function indicating electronic timepiece according to the present embodiment shown in FIG. 1 has been described above, and the configuration for realizing the above functions will be described with reference to the block of FIG. It will be described with reference to the drawings.

In FIG. 2, an oscillator circuit 10 and a frequency divider circuit 1
1. The frequency dividing circuit 12, the frequency dividing circuit 13, the drive pulse shaping circuit 14, the step motor 15, the train wheel 16, and the chattering prevention circuit 17 are well known as an example of a quartz type analog timepiece having a crystal oscillator as a time reference source. I will explain it briefly.
Oscillation circuit 10 is 32768Hz with a crystal oscillator as the source oscillation.
Oscillates. The frequency divider circuit 11 sequentially divides the 32768 Hz oscillation signal and outputs a ₁₂₈ Hz signal φ ₁₂₈ . The frequency dividing circuit 12 sequentially divides the ₁₂₈ Hz signal φ ₁₂₈ to obtain 16
Outputs HZ signal φ ₁₆ . The frequency divider circuit 13 sequentially divides the ₁₆ Hz signal φ ₁₆ to output a 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 PM corresponding to the 1Hz signal φ _1, and drives the step motor 15 once per second. Step motor 15
Is composed of a coil, a stator, and a two-pole rotor. The chattering prevention circuit 17 removes the chattering waveform from the input signal of each switch. Since the terminals A, B, C, D, and E are pulled down to the negative, the signals SA and S output from the chattering prevention circuit.
B, SC, SD and SE are normally "Low" and become "High" only when the respective switches are closed (the signal SA is when the external operating member 1 is operated, the signal SB is the external operating member 2).
When the external operating member 3 is operated, the signal SD is "High" when the crown 4 is in the second stage, and the signal SE is "High" when the crown 4 is in the third stage. Will be).

The switch control circuit 18 is constructed as shown in FIG. In FIG. 3, 50, 51, 52 and 53 are D
In the period in which the CLOCK input input to the CP terminal in the type latch is rising, the DM input appears in the M output as it is, and the M output holds the DM input at that point in time when the CLOCK input falls. Also 54, 55, 56, 5
7, 58, 59, 60, 61, 62, 63, 64, 65
Is an AND gate, 66 is an OR gate, 67 is an inverter, and 70 is a NOR gate. 68 and 69 are D-type flip-flops, and the input level applied to the D input is transmitted to Q and Q at the falling edge of CLOCK input to the CP terminal. A signal S output from the chattering prevention circuit 17 of FIG. 2 is input to the input terminals I _{9 to} I ₁₃ .
A, SB, SC, SD and SE are input respectively, and the input terminal I ₁₄ is formed by the frequency divider circuit 11 of FIG.
128Hz signal bar φ with 7: 1 ratio of h "and" Low "
₁₂₈ 'is entered. A start / stop signal S for instructing the start and stop of the chronograph from the output terminal O _3.
t, the split signal Sp for instructing the display of the split time is output from the output terminal O _4, and the reset signal Re for instructing the return of the chronograph hand to the 0 position is output from the output terminal O ₅ . from the output terminal O ₆ outputs a signal Se1 / 20 for commanding the correction of the 0 position of the chronograph 1/20 second 6, the signal Sesec for commanding the correction of the 0 position of the chronograph second hand 7 from the output terminal O ₇ A signal Sesec for instructing the correction of the 0 position of the chronograph minute hand 8 is output from the output terminal O ₈ .

The signal SA 'is supplied to the latch 50 and the AND gate 5.
4 is a signal obtained by differentiating the signal SA at the rising edge by 4.
The signal SA is synchronized with the fall of the signal bar φ128 'by the chattering prevention circuit 17 of FIG.
The signal SA ′ output from the gate 54 has a pulse width of 0.9.
It is a differential signal of 8 msec. Similarly, the signal SB ′ is a signal obtained by differentiating the signal SB at the rising edge by the latch 51 and the AND gate 55, and the signal SC ′ is ANDed with the latch 52.
It is a signal obtained by differentiating the signal SC at the rising edge by the gate 56. Further, the signal SD 'is the start / stop signal St
Is a signal obtained by differentiating the signal SD at the rising edge only when is "Low".

[0022]

The logic states of the start / stop signal St and the split signal Sp do not change when the signal bar (SD + SE) output from the NOR gate 70 is "Low". The logical state of the split signal Sp is AND
The start / stop signal St is set to “Lo” by the gate 65.
It does not change cyclically when it is w ”. Further, the reset signal Re is“ High ”when the signal SD ′ is output or when the signal bar (SD + SE) is“ High ”and the signal SC ′ is output. Therefore, even if the crown 4 in Fig. 1 is pulled out from the first step to the second step and the third step while trying to adjust the hour and minute hands for the time while the chronograph is operating, the chronograph will still operate. If the crown 4 is pulled out to the second stage while the chronograph is stopped, the chronograph will be reset.

Signal Se1 / 20..instructing correction of 0 position of each chronograph hand. Sesec. Semin is not output unless the signal SD is "High" and the start / stop signal St is "Low" by the AND gate 61.

This is the end of the description of the switch control circuit 18.

The AND gate 19 is a switch control circuit 1
The start / stop signal St output from 8 is "High"
128H output from the frequency divider circuit 18 only when h "
It functions as a switch that passes the z signal φ ₁₂₈ .

The 20 Hz signal shaping circuit 20 forms a ₂₀ Hz signal φ ₂₀ which is a reference for time measurement of the chronograph from the ₁₂₈ Hz signal φ ₁₂₈ which has passed through the AND gate 19.

21, 22, 23, 24, 25, 26, 2
7,28,29,30,31,6 is the chronograph 1
/ 20 is a component for displaying the digit of 20 seconds,
0 second hand position counter B24, coincidence detection circuit 25, 1 /
The 20-second hand control circuit 27 also serves as a function selecting means for selecting a mode display by inputting a spirit mode signal to I ₄ .

The 1/20 second measuring counter 21 is 20H
This is a decimal counter that counts the z signal φ ₂₀ and is reset when the reset signal Re output from the switch control circuit 18 and input to the input terminal I ₅ becomes “High”.

The latch circuit 22 is a switch control circuit 18
Output from the input terminal I ₄ split signal S
During the period of p "Low", the contents of the 1/20 second measurement counter 21 are passed through as they are, and the contents of the 1/20 second measurement counter 21 at that time are held at the rising of the split signal Sp.

1/20 second hand position counter A23 and 1 /
The 20-second hand position counter B24 is chronograph 1/2
A counter for storing the indicated position of the 0 second hand 6
The switch control circuit 18 counts the 1/20 second hand drive signal φM1 / 20 output from the / 20 second hand control circuit 27.
Chronograph 1 applied to the input terminal I ₆ are more output /
It is reset by the 1/20 second hand 0 position correction signal Se1 / 20 which commands the correction of the 0 position of the 20 second hand. 1/20
The second hand position counter A23 is a 20-ary counter having the same structure as the 1/20 second measurement counter 21. 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 includes latch circuits 22 and 1
/ 20 seconds hand position counter A23 and the contents, and FIG.
The contents of the flip-flop 69 and the 1/20 second hand position counter B24 are compared, and when both contents match, it becomes "High" and at other times, "Lo".
The coincidence signal Ye1 / 20 that is w ″ is output.

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 the 1/20 second hand position counters A23 and 1 are provided.
/ 20 When both the second hand position counters B24 become 0, it becomes "High", and at other times it becomes "Low" 0
The position signal 0 1/20 is output.

The 1/20 second hand control circuit 27 outputs the start / stop signal st, which is output from the switch control circuit 18,
And the split signal Sp, the match signal Ye1 / 20 output from the match detection circuit 25, and the 0 position signal 0 1/20 output from the 1/20 second hand zero position detection circuit 26.
16 output from the frequency dividing circuit 12 depending on the logic state of
The Hz signal φ ₁₆ may or may not be passed as the 1/20 second hand drive signal φM 1/20. In this embodiment, the start / stop signal St is "Low" or the split signal Sp is "High" and the coincidence signal Ye1 / 20.
Is "Low" and start / stop signal St "H
16 "signal ₁₆ is output as 1/20 second hand drive signal .phi.M1 / 20 when" high "and split signal Sp is" Low "and 0 position signal 0 1/20 is" Low ". The / 20 second hand 6 normally stands by at the 0 position and displays the contents of the latch circuit 22 only in the stop and split states on the STOP section or the SPLIT section of the display section 9 in FIG.

28 is an OR gate.

The drive pulse shaping circuit 29 has a step motor drive pulse PM corresponding to the 1/20 second hand drive signal φM1 / 20 or the 1/20 second hand 0 position correction signal Se1 / 20.
It outputs 1/20 and drives the step motor 30.

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

32, 33, 34, 35, 36, 37, 3
Reference numerals 8, 39, 40 and 7 are components for displaying the seconds digit of the chronograph.

The second counting counter 32 is a 60-ary counter that counts the 1 Hz signal φsec output from the 1/20 second counting counter 21, and is output from the switch control circuit 18. When the reset signal Re becomes "High", it is reset.

The latch circuit 33 allows the contents of the second counting counter 32 to pass through as it is while the split signal Sp output from the switch control circuit is "Low", and at the rising of the split signal Sp, the second counting counter 32 at that point of time. Keep the content.

The second hand position counter 34 is a 60-base counter for storing the indicated position of the chronograph second hand 7, and the second hand drive signal φM output from the second hand control circuit 36.
Seconds are counted and reset by the second hand 0 position correction signal Sesec output from the switch control circuit 18.

The coincidence detection circuit 35 compares the contents of the latch circuit 33 and the second hand position counter 34, and outputs a coincidence signal Yesec that becomes "High" when the contents coincide and becomes "Low" otherwise.

The second hand control circuit 36, when the coincidence signal Yesec output from the coincidence detection circuit 35 is "Low",
The 16 Hz signal φ ₁₆ is output as the second hand drive signal φMsec. Therefore, the chronograph second hand 7 displays the 1 Hz signal φsec during the normal measurement of the chronograph.
Since the latch circuit 33 and the second hand position counter 34 do not match each time input to 2, the hand moves in 1 second steps, stops at split and stop, and when the split is released and reset, the contents of the latch circuit 33 and the second hand position counter 34 are changed. Move at 16Hz until they match.

37 is an OR gate.

The drive pulse shaping circuit 38 outputs a step motor drive pulse PMsec corresponding to the second hand drive signal φMsec or the second hand 0 position correction signal Sesec, and drives the step motor 39.

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

41, 42, 43, 44, 45, 46, 4
Reference numerals 7, 48, 49, and 8 denote constituent elements for displaying the minute digits of the chronograph, and since the respective constituent elements are configured in the same manner as the constituent elements for displaying the digit of the second, the description thereof will be omitted. To do.

As described above, when configured as shown in FIG.
In the stop mode, the 20 second hand 6 stops on the display 9
The electronic timepiece with a chronograph function, which displays the stop time on the display section and displays the split time on the SPLIT section of the display section 9 in the split mode, becomes possible.

This is the end of the description of the present embodiment.

In the present embodiment, 1/20 of FIG.
Although the second hand 6 is configured to display the mode display and the measurement time at the same time, a pointer dedicated to the mode display driven by an independent step motor may be provided. In this case, the coincidence detection circuit 25 of FIG. 2 is separated into a measurement time display relation and a mode display relation, and a 1/20 second hand position counter B2
4 is a mode display hand position counter, and the mode display hand position counter counts the signal for driving the mode display hand. The signal for driving the mode display hand is displayed by the coincidence detection circuit in the flip-flop 69 and the mode display of FIG. It may be output only when it is determined that the contents of the needle position counter do not match.

In the present invention, the mode can be displayed by the pointer without using a display element such as a liquid crystal panel. Therefore, since parts such as a step motor and a train wheel can be arbitrarily arranged under the dial, it is possible to reduce the size and thickness of the dial. It is also excellent in design because it does not feel strange,
By displaying the mode, it is possible to realize a multifunctional pointer display electronic timepiece that is easy to operate, and the practical effect is extremely large.

In the embodiment, only the chronograph stop mode and split mode are described.
For example, in addition to the hour, minute, and second hands for normal time, a multifunctional hour hand, minute hand, and second hand that are operated by independent step motors are provided, and alarms are set by the multifunctional hour hand, minute hand, and second hand. The present invention also has an excellent effect when the time, the remaining time of the timer, the chronograph measurement time, the dual time, etc. are switched and displayed. In this case, for example, a mode display section as shown in FIG. 4, a pointer for displaying a mode that is operated by an independent step motor, a counter for forming each mode, and a mode forming counter In addition, a mode indicator hand pointing position memory counter for storing the pointing position of the pointer for mode display and a matching detection circuit for the mode forming counter and the pointing position memory counter are provided, and the contents of both counters are matched by the matching detection circuit. If it is determined that the mode is not displayed, the pointer for mode display may be moved.

[0053]

According to the present invention, the display means displays the measurement time and
Modes should be configured to display the same pointer simultaneously.
By doing so, there is no need to provide a dedicated pointer for mode display.
You can easily check the measurement time and mode, and
Suppress the increase in points and improve user convenience
It is something that can be done. Furthermore, the stepper motor
Match detection when mode is selected by function selection means
It is controlled to drive the display means until the signal is output.
The step motor is always driven during measurement.
Instead, for example, select stop mode or split mode.
The measurement time of the selected mode after being selected is displayed.
Therefore, the current consumption of the watch body can be suppressed and battery life is reduced.
It is possible to provide a long pointer display electronic timepiece. Further
Mode is displayed by the pointer, other display pointers
Multi-functionalized pointer display phone with no discomfort in design
A child clock can be provided.

[Brief description of drawings]

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

FIG. 2 is a block diagram of an embodiment.

FIG. 3 is a diagram showing a specific configuration example of a switch control circuit 18 in FIG.

FIG. 4 is a diagram showing a mode display unit of a multifunctional pointer display electronic timepiece to which the present invention is applied.

[Explanation of symbols]

6 ... Chronograph 1/20 second hand / mode display hand 9 ... Chronograph 1/20 second hand digit display / mode display 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 split signal Sp

Claims (1)

[Claims] 1. A pointer indication electronic timepiece having a plurality of functions, a function selecting means for selecting a mode by an input function specification signal, a measurement counter for storing the measurement time, and display means for displaying the measured time, A step motor that drives the display means, and a display position storage counter that stores the indicated position of the display means.
Of the measurement counter and the display position memory counter
Contents and compare the contents of both counters
A coincidence detection circuit that outputs an output signal, and the display means uses the same indicator for the measurement time and the mode.
The step motor is set to the mode by the function selecting means.
When is selected, until the match detection signal is output
A pointer display electronic timepiece characterized by being controlled so as to drive the display means .