JPS5827471B2 - Time display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time display method in a time display device in which an electronic timepiece having an electronically operated display element is provided with a dynamic analog time display.

The purpose of this invention is to provide an electronic timepiece with extremely low power consumption by adding simple circuit components to the circuit configuration of a conventional electronic timepiece, and at the same time, by making the time display dynamic, it is easy to read. An object of the present invention is to provide a time display method in a time display device that is attractive as a product.

Furthermore, an object of the present invention is to realize a dynamic analog time display with a simple circuit configuration, so that a single time display switch can automatically display the hours, minutes, and seconds. The purpose is to make the start times of any of the time displays different to make it easier to grasp the time.

Furthermore, it is intended to provide a colorful display and at the same time provide an indication of battery life.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a time display device, which has a digital display section 17 composed of an hour display 17a, a minute display 17b, and a colon 17c that separates the hour display 17a and the minute display 17b. A light emitting diode D that displays seconds.

, Dl. D2... is located.

FIG. 2 shows a circuit diagram for operating the time display device shown in FIG.
1. A frequency divider DIV that receives signal outputs from the standard time signal generators O, S, and C and generates a 1-second signal (IHz), and a sexagesimal counter that receives and counts the 1-second signal from the frequency divider DIV. 1 of carry pulse of sexagesimal counter C0UNTI
a sexagesimal counter C0UNT2 that receives and counts the emitted signal;
It is composed of a hexadecimal counter C0UNT3 that receives and counts the 1-hour signal from the hexadecimal counter C0IJNT2.

A sexagesimal counter that generates a minute signal, 1 that generates an hour signal
The output of the binary counter is added as an input to the gate circuit G.

This gate circuit G is controlled by a time sharing pulse generator T.S that operates by receiving an output signal from the frequency division stage output terminal S of the frequency divider DIV.

The minute signal and hour signal are applied to the segment driver SD via a gate circuit.

On the other hand, the output of the time sharing pulse generator T-8 is added to the human power of the digit driver D-D that drives the hour and minute display on the digital display section 170, and the output of the segment drivers S, D and the digit driver D-D is Displays hours and minutes in sync.

This type of time and minute display is well known.

Next, to explain the seconds display, the 6 that generates the seconds signal
The output of the 0-base counter C0UNT1 is applied to the comparator COMP.

a switch circuit S2 controlled by a comparator COMP;
A shift register 14 receives a signal from the frequency division stage output terminal a of the frequency divider DIV, and a light emitting diode D of the seconds indicator 16 receives the output of this shift register 14.

. . . D59 is configured to display seconds from the driver 15 that drives the display.

Next, the second display operation will be explained. Now, when the second display switch S□ is closed, the data generator DG operates and generates a signal to the D terminal of the shift register 14.

At the same time, control switch S2 is also closed, and the pulse generated at the divider stage output terminal of frequency divider DIV is applied to the CL terminal of shift register 14.

Therefore, the data in the shift register 14 is shifted in the shift direction.

The data on the shift register 14 is displayed on the display 16 by 7 feet.
The 0-front photodiode receives a drive signal from the driver 15 and enters a light emitting display state.

The display of the light emitting diode of the display 160 blinks due to the switching operation of the transistor T by the output signal pulse of the frequency division stage output terminal C of the frequency divider DIV.

Now, when the sexagesimal counter C0UNTi is counting 25 seconds and the second display switch S1 is closed, the switch control circuit S2 is also closed and the data in the shift register 14 is shifted.

On the other hand, the sexagesimal counter C0UNT4 also counts the output signal pulses of the frequency division stage output terminal a of the frequency divider DIV, and when 25 pulses are counted, that is, the sexagesimal counter C0UN
When the contents of TI and the contents of the sexagesimal counter C0UNT4 match, an output pulse is generated from the comparator COMP to open the switch of the switch control circuit S2, and this output pulse also opens the switch control circuit S2. ,
Monostable multivibrator M operates.

Therefore, the light emitting diode D of the display 16.

. D , D , D . . . , D25 are sequentially blinked and displayed as shown in FIG.

After a predetermined period of time has elapsed due to the output R from the monostable multivibrator M, the shift register 14 and the sexagesimal counter C0UNT4 are reset, and the light emitting diode D is reset.

jDl, D2..., D25 all disappear.

Next, another embodiment will be explained based on FIGS. 3 and 4. FIG. 3 shows the second display switch S shown in FIG.
1 shows the closed state, does not display the hours, but displays the minutes 17b
and the state displayed by the seconds indicator 16.

Figure 4 shows a partially modified configuration of Figure 2, in which a monostable multivibrator M□ is further connected to the output of the monostable multivibrator M, and this monostable multivibrator M
By the output of 1, the time sharing pulse generator T
- A gate circuit 22 and a gate circuit 23 for controlling the output of S are added.

To describe the operation of the above configuration, the hexagonal counter C0UNTI (not shown) is used as in the explanation of FIG.

) is in the counting state of 25 seconds, the seconds display switch S1
When closed, the second indicator 160 light emitting diodes Do, Dl
, D2. . . . D25 sequentially blinks in response to the base input signal of the transistor T1.

At the same time, the gate circuit 23 operates and the minute display 17b is also displayed by the minute display digit driver DM.

After a predetermined period of time has elapsed, all of the flashing diodes disappear by the reset pulse R of the monostable multivibrator.

At the same time, the reset pulse also operates the second monostable multivibrator M1, which closes the gate circuit 22 for a predetermined time and digit driver D which drives the hour and minute display.
-D drives the display digit driver DH.

That is, in this embodiment, the seconds and minutes are displayed simultaneously by closing the seconds display switch S1.

The hour display will be displayed for a predetermined time t after the minute and second displays disappear.
It will be displayed for a while.

Next, the embodiment shown in FIG. 5 which shows the remaining time will be described. The embodiment shown in FIG. 5 shows a configuration in which an inverting circuit 51 is added between the shift register 14 and the driver 150 of the embodiment shown in FIG.

The inverting circuit 51 operates by closing the switch S3, and does not have an inverting function when the switch S3 is open. Such a circuit is realized by a known exclusive OR circuit.

Therefore, when the operator wants to check the remaining time, switch S3
All you have to do is close it.

FIG. 6 shows a dial of a watch with dynamic analog display of hours, minutes and seconds.

Although this circuit configuration is omitted, the second display circuit configuration shown in the embodiment of FIG. 2 may also be implemented for minute and hour display.

Note that FIG. 6 shows 4:10:25.

FIG. 1a shows the display elements of the seconds indicator 16.

D5 s Dlo y Dl5 s D20 s D
25 p D30 p D355D4oj D4. F
D5o, D5. , threshold level 1.8
v~2. The other second display light emitting diode D1. D
2. D3.・・・・・・Threshold level 1.6
It is composed of a GaAsP red light emitting diode of about V.

Furthermore, when the battery voltage for driving the watch falls below the threshold level of the green light emitting diode, the display function of the green light emitting diode is stopped, and the watch user is notified of the battery exhaustion.

In this case, even though the display function of the green light-emitting diode has stopped, the red light-emitting diode still has a display function, so it will notify the watch user of the battery life.

The circuit configuration shown in FIG. 8 is an improved version of the circuit configuration of the embodiment shown in FIG. , a gate circuit G1 controlled by the comparator COMP output signal and the output pulse R of the monostable multivibrator M is connected.

Now, when the contents of the sexagesimal counter C0UNTl count 25 seconds, when the second time display switch S1 is closed, the data in the shift register 14 is immediately changed by the signal generated at the frequency division stage output terminal a of the frequency divider DIV. Shift and
Corresponding to the shift, the light emitting diodes of the indicator 160 are light emitting diodes Do, D1 . D2.・・・・・・D25.
The light is displayed in the following order.

The output signal of the comparator COMP controls the switch control circuit S2, and the output signal of the frequency division stage output terminal a of the frequency divider DIV is
simultaneously applying it to the first control input of the gate circuit G1;
The gate circuit G1 is closed so that the output signal of the frequency divider DIV is directly applied to the shift register 14, and after the time constant time t of the monostable multivibrator M has elapsed, it is closed by the one set signal R of the monostable multivibrator.

During the time constant time t, the light emitting diode of the display 16 flashes in sequence D26 j D2□ every 1 second to display seconds.

By adjusting the cheater generators D and G connected to the data terminals of the shift register 14 by known means, it is possible to display only the light emitting diode that indicates the predetermined second time and the light emitting diode that indicates the predetermined second time. It is possible to set all the light emitting diodes to the display state.

It goes without saying that in the latter case, but also in the former case, the switch S1
When the display is closed, the light emitting diode corresponding to the time emits light until a predetermined time is reached, so it goes without saying that a dynamic analog display is created due to the afterimage effect.

Various effects can be obtained from the time display method in the configuration as described above.

That is, by using a dynamic analog display for at least one of the hour, minute, and second time displays, there is an advantage that the time display is given movement and the elapsed time can be instantly understood.

In addition, among the hour, minute, and second time displays, the hour, minute, and second time displays are digital, and the second time display is a dynamic analog, so you can instantly read the predetermined time by pressing the time display switch. made it possible to understand.

A single time display switch automatically starts displaying the hours, minutes, and seconds, making it even easier to keep track of the time.

Additionally, by using multiple light emitting diodes with different threshold levels, it was also possible to easily determine the battery life.

Another advantage is that dynamic analog can be easily realized using a simple circuit, preferably a shift register, in a conventional circuit configuration.

Furthermore, by controlling the light emitting diodes by the output signal of the frequency division stage output terminal C of the frequency divider DIV, it is possible to further contribute to the reduction of power consumption, and at the same time, the visual sensitivity due to the blinking display is improved.

If a dynamic analog display is realized using the afterimage effect of the operator's eyes, power consumption will be further reduced.

[Brief explanation of drawings]

FIG. 1 shows a time display device which is an embodiment of the present invention. FIG. 2 shows the time display circuit of the embodiment shown in FIG. FIG. 3 shows a time display device according to another embodiment of the invention, and FIG. 4 shows a time display circuit in which the display operation start and end times of the time display are made different. FIG. 5 shows a time display device in which a circuit for indicating the remaining time is added to the embodiment of FIG. 1. Further, FIG. 6 shows a time display device in which the time display is a dynamic analog display. FIG. Show. FIG. 8 shows a circuit configuration that is an improved version of the embodiment shown in FIG. COMP... Comparator, M, Ml... Monostable multivibrator, C0UNT 4... Hexadecimal counting circuit, S
l...Time display switch, DG...Data generator, S2...Switch control circuit, 14...Shift register 15...Driver, 16...Display device, Do,
Dl...D59...Light emitting diode, 2
2... Gate circuit, DD... Digit driver, 51... Inverting circuit.

Claims (1)

[Claims] 1 By operating a switch, the display elements sequentially shift to the display state and display up to the current time.On the next page, the next display element sequentially shifts to the display state every unit time and continues to display the current time for a certain period of time. Time display method.