JPS5827472B2 - Jikokuhiyojisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to 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. The object of the present invention is to provide 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 time of the time display different from each other to make it easier to understand 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 consisting of an hour display 17a, a minute display 17b, and a colon 17c that divides the hour display 17a and minute display 17b. Light emitting diode D that displays seconds.

, D, ID2... are located.

FIG. 2 shows a circuit diagram for operating the time display device shown in FIG.
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); a sexagesimal counter that receives and counts the 1-second signal from the divider 1) IV; 1 of the carry pulse of this sexagesimal counter C0UNT1
A sexagesimal counter C0UNT2 that receives and counts the bunku code;
It is composed of a hexadecimal counter C0UNT3 that receives and counts the 1-hour signal from the sexagesimal counter C0UNT2.

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 time sharing pulse generators T and S which operate by inputting the output signal of the frequency division stage output terminal S of the frequency divider DIV.

The minute signal and hour signal are applied to segment drivers S and D via gate circuits.

On the other hand, the outputs of the time sharing pulse generators T and S are added to the inputs of the digit drivers D and D that drive the hour and minute displays on the digital display section 170, and the outputs of the segment drivers S and D and the digit drivers D and D are Displays hours and minutes in sync.

This type of time and minute display is well known.

Next, to explain the second display, the 6
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. When the second display switch S1 is closed, the data generator G operates and generates a signal to the D terminal of the shift register 14.

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

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

By shifting the data of the shift register 14, the display 16
The light emitting diode 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, the sexagesimal counter C0UNTI is counting 25 seconds? - When 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 T1 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. Stable multivibrator M operates.

Therefore, the indicator 160 light emitting diode D.

. Dl, D2. D3. . . . D25 blinks sequentially (as shown in FIG. 1)) 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 .

, Dl s D2 s..., all the displays of D25 disappear.

Next, another embodiment will be explained based on FIGS. 3 and 4. FIG. 3 shows the second display switch S1 shown in FIG.
It shows a closed state, and shows a state in which the minute display 17b and second display 16 are displayed without displaying the hours.

Figure 4 shows a partially modified configuration of Figure 2, in which a monostable multivibrator M1 is further connected to the output of the monostable multivibrator M, and the output of the monostable multivibrator M1 is used for time sharing. A gate circuit 22 and a gate circuit 23 for controlling the outputs of the ring pulse generators T and S are added.

To describe the operation of the above configuration, when the sexagesimal counter C0UNTI (not shown) is counting 25 seconds and the seconds display switch S1 is closed, the seconds display 160 light emitting diode Do, Dl, D2.・・・・・・
...D25 blinks in sequence according to the base input signal of transistor T1.

At the same time, the gate circuit 23 operates and the minute display 17b is also displayed by the minute display display driver DM. After six predetermined time periods have 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, causing the gate circuit 22 to operate for a predetermined period of time.
, and drives the hour display digit driver DH of the digit driver D, which drives the hour and minute display.

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

The hour display will be displayed for a predetermined period of time after the minute and second displays disappear.

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

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
Just 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 in FIG. 2 may also be implemented for minute and hour display.

In addition, FIG. 6 shows 4:10:25.

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

D5. Dlo, D15. D2o, D25. D3o, D3
．． .

D4os D45 s D50, D55, threshold level/L/1.8v~2. Comprised of a GaP green light emitting diode element that emits light at Ov, and other second display light emitting diodes DI s D2 z D3
s... is composed of GaAsP red light emitting diodes with a threshold level of about 1.6V.

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 C0UNTI count 25 seconds, when the second time display switch S□ is closed, the data in the shift register 14 is changed by the signal generated at the frequency division stage output terminal a of the frequency divider DIV. Shift immediately and
Corresponding to the shift, the light emitting diodes of the indicator 160 are light emitting diodes Do, D□, D2 .・・・・・・D2
5. 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
at the same time as blocking the signal from being applied to the CL terminal of the shift register 14 and applying it to the first control input of the gate circuit G1 to close the gate circuit G0 so that the output signal of the frequency divider DIV is directly applied to the shift register 14; After the time constant time t of the monostable multivibrator M has elapsed, it is closed by the reset signal R of the monostable multivibrator.

During the time constant time t, the light emitting diode of the display 160 flashes D26*D2□ every 1 second to display seconds.

A cheater generator connected to the data terminal of the shift register 14, and a case in which only the light emitting diode indicating a predetermined second time is brought into a display state by adjusting G by a known means, and a light emitting diode that reaches the light emitting diode indicating a predetermined second time. It is possible to have all of them displayed.

It goes without saying that in the latter case, but also in the former case, the switch S□
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.

The configuration as described above provides various effects.

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 with 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 DESCRIPTION OF THE DRAWINGS FIG. 1 shows a time display device that 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 remaining time is added to the embodiment shown in FIG. Further, FIG. 6 shows a time display device in which the time display is a dynamic analog display. FIG. 7a shows a circuit diagram of the embodiment shown in FIG. 1 with a display element for displaying lifespan added, and FIG. 7a shows a time display device in which the embodiment shown in 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, C0UNT4...6
0-decimal counting circuit, SL...Time display switch,
D, G... Data generator, S2...
Switch control circuit, 14...shift register,
15...driver, 16...display unit,
Dot Dl m...D59.・・・・・・
Light emitting diode, 22...Gate circuit, D, D
......Digital driver 51...Inverting circuit.

Claims (1)

[Scope of Claims] 1. A control switch circuit that passes high-speed pulses in response to a time display start signal, a high-speed pulse counting circuit that inputs the high-speed pulses after passing through the control switch circuit, a shift register, and a time signal counter that counts time signals. the circuit compares the contents of the high speed pulse counting circuit with the contents of the time counting circuit and generates a match signal for stopping the high speed pulse from passing through the control switch circuit when the two contents match. A display device comprising a comparison circuit for sending data to the control switch circuit, a drive circuit connected to the shift register, and a display section connected to the drive circuit. 2. A control switch circuit that passes high-speed pulses in response to a time display start signal, a high-speed pulse counting circuit and shift register that inputs the high-speed pulses after passing through the control switch circuit, a time signal counting circuit that counts time signals, and the high-speed pulse counter. Comparing the contents of the circuit with the contents of the time counting circuit and sending a match signal to the control switch circuit to stop the high speed pulse from passing through the control switch circuit when the two contents match; A time display device comprising a circuit, a gate circuit for passing a unit time signal and inputting it to the shift register based on the coincidence signal, a drive circuit connected to the shift register, and a display section connected to the drive circuit. 3. A control switch circuit that passes high-speed pulses in response to a time display start signal, a high-speed pulse counting circuit and shift register that inputs the high-speed pulses after passing through the control switch circuit, a time signal counting circuit that counts time signals, and the high-speed pulse counter. Compare the contents of the circuit with the contents of the time counting circuit, and when the two contents match, send a match signal to the control switch circuit to stop the high speed pulse from passing through the control switch circuit. A time display device comprising a comparison circuit, an inversion circuit connected to the shift register, a drive circuit connected to the inversion circuit, and a display section connected to the drive circuit. 4. A control switch circuit that passes high-speed pulses in response to a time display start signal, a high-speed pulse counting circuit and shift register that inputs the high-speed pulses after passing through the control switch circuit, a time signal counting circuit that counts time signals, and the high-speed pulse counter. The contents of the circuit are compared with the contents of the time counting circuit, and when the two contents match, the match signal is applied to stop the high speed pulse from passing through the control switch circuit! a comparison circuit for sending a signal to the one-leg switch circuit; a gate circuit for passing a unit time signal according to the coincidence signal and inputting it to the shift register; an inversion circuit connected to the shift register; a drive circuit connected to the inversion circuit; A time display device comprising a display unit connected to a drive circuit.