JPS6355676B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an analog/digital electronic timepiece equipped with two display sections: analog and digital.

Conventionally, electronic watches equipped with analog and digital display sections include a watch body 3 having an analog display section 1 and a digital display section 2 on the same display surface, and a protrusion on the side of the watch body 3, as shown in FIG. A pair of switches SW ₁ and SW ₂ are provided, and the analog display section 1 is controlled by the operation of the switches SW ₁ and SW ₂ .
The correction of the digital display section 2 is carried out in accordance with the procedure shown in FIG.

In this figure 2, block A is a switch.
By turning SW ₁ on and off, the digital display section 2 can be set to day of the week display mode DD-0, second display mode SD, and hour and minute display mode TD-0 while leaving the "hour and minute" display on analog display section 1 unchanged. This shows that the mode can be changed sequentially, and the part shown by the broken line accompanying the day of the week display mode DD-0 is the month, day, and day of the week correction modes DD-1 to DD by turning switch SW ₂ on and off. -Make 3 selections,
At this time, each display is corrected by turning on/off the switch _SW1 . Also,
The dashed line part associated with the seconds display mode SD indicates the correction mode by turning switch SW ₂ on and off, and the dashed line part accompanying the hour and minute display mode TD-0 indicates the correction mode by turning switch SW ₂ on and off. This shows the selection and modification of each of the minute correction modes TD-1 and TD-2 and the pointer display mode TD-3. Block B shows the sequence system when an analog/digital electronic clock functions as a stopwatch.Selection to this mode can be made by pressing and holding switch SW ₁ for about 2 seconds from each display mode state in block A. The start and stop are performed by turning switch _SW1 on and off.

This type of electronic clock has analog ``hours and minutes'' and digital ``hours and minutes'' display functions, and the digital ``hours and minutes'' are often displayed in a 24-hour format. Furthermore, these two "hours and minutes" are often used as dual time; for example, when traveling abroad, the local time is set in analog mode, and when returning to one's home country, the analog "hours and minutes" are set again. Digital “hours and minutes” (home country time)
I try to use it accordingly. As described above, the analog display method is often modified because the time display is easy to see.

Next, the correction operation will be explained. However, the analog display section will have a 10-second movement, and the correction sequence by switch operation will be as shown in Figure 2, and the analog "hours and minutes" will be corrected to match the digital "hours and minutes."

First, switch SW ₁ turns on digital display section 2.
Set the watch to "hour/minute" display mode TD-0, then turn switch SW ₂ on and off three times in a row to set the watch to analog correction mode TD-3. When in this mode, the digital hour and minute digits simultaneously flash at 1Hz to indicate analog correction mode. At this time, motor output based on the carry signal from the second digit is prohibited.

Now, for example, if the "hours and minutes" display on the digital display section 2 is "20:08" and you want to adjust the "hours and minutes" on the analog display section 1 accordingly, you need to
Performed by SW ₁ . In other words, when switch SW ₁ is turned on and off at intervals of 1 second or less, one pulse of motor output is sent each time the switch SW 1 is turned on or off, and if it is held down for more than 2 seconds, a 32Hz fast forward pulse is sent to the needle. It is sent to the drive step motor and rapidly advances the pointer. As a result of this fast-forwarding operation, when the indicator on the digital display section 2 approaches the desired time of 20:08, the fast-forwarding is stopped, and the remaining few minutes are displayed on the analog display section 1 by turning switch SW ₁ on and off.
Adjust the guideline to "20:08". When the adjustment of the hours and minutes on the analog display section 1 is completed, the switch SW ₂ is turned on and off to return to the hours and minutes display mode TD-0. As a result, the inhibition of the carry signal from the second digit to the step motor is canceled, and the analog display mechanism is moved by the clock signal.

By the way, since the motor drive output in the above-mentioned analog display mechanism is sent out every 10 seconds, depending on the timing at which switch SW ₂ is turned on and off, it may match the "hour and minute" display on digital display section 2. I will not do it. For example, if you turn switch SW ₂ on and off at 20:08:35, even if the digital display 2 shows "20:09", the analog display 1 will not show 20:08:30. located in
There will be a difference in the "hour and minute" display between the two. In order to eliminate this difference, that is, the delay, the display on the analog display section 1 must be one step lower than the display on the digital display section 2.
The minute is advanced, and the moment the hour and minute display on the digital display section 2 shows "20:09," all you have to do is turn the switch SW ₂ on and off while the seconds are between 0 and 9.

However, the conditions for the analog display to be one minute ahead of the digital display and the conditions for turning switch SW ₂ on and off when the seconds display is between 0 and 9 place a heavy burden on the user, and the additional function of dual time is required. It becomes difficult to use due to poor operability.

This invention solves the above-mentioned conventional drawbacks, and its purpose is to simplify the operability of analog display correction and adjustment to digital display contents, and to enable effective use of the dual-time function. Our goal is to provide analog and digital electronic clocks.

In other words, the present invention provides an electronic timepiece having a digital display and a two-hand analog display that moves every m seconds, when returning from the analog correction mode to the normal hand movement mode, in synchronization with the initial carry from the second counter. n pulses are supplied to the step motor, and thereafter one pulse is supplied to the step motor every m seconds.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 shows an example of an analog/digital electronic timepiece according to the present invention, where 4 is an oscillation circuit, 5 is an oscillation circuit, and 5 is an oscillation circuit.
is a frequency dividing circuit that divides this oscillation signal to obtain a 1-second period clock pulse, and the 1-second pulse output from this frequency dividing circuit 5 is input to a sexagesimal second counter 6; The carry signal of 6 is sent to the sexagesimal minute counter 7, and the carry signal of minute counter 7 is sent to the sexagesimal minute counter 7.
The carry signal of the hour counter 8 is sent to the hour counter 8 in sexagesimal base, and the carry signal of the hour counter 8 is sent to the day counter 9 in 24 base and the day counter 1 in hexadecimal.
0, the carry signal of the day counter 9 is input to the month counter 21, and the count contents of the counters 6 to 10 are as follows.
The signal is output as a BCD code and selectively displayed digitally on the digital display section 2 via the selection circuit 11 and decoder/driver 12. The 1 second pulse from the frequency divider circuit 5 is input to a 10 second output circuit 13 which sends out an output pulse every 10 pulses (every 10 seconds), and output pulses sent from this output circuit 13. is applied as a motor output to the step motor (not shown) of the analog display section 1 via the AND gate 14 and the OR gate 15, and by driving the step motor, the minute hand of the analog display section 1 is activated via a wheel train (not shown). The hand is set to move every 10 seconds.

The 6-pulse output circuit 16 is used to continuously send out 6 pulses when the carry signal from the second counter 6 is input, and move the minute hand of the analog display section 1 by one minute. The pulses sent out from the six-pulse output circuit 16 are applied to the step motor of the analog display section 1 via the AND gate 17 and the OR gate 15. 18 is a switch control circuit operated by switches SW ₁ and SW ₂ ;
A display mode selection signal S _A , an analog display section control signal S _B , and a signal (pulse) P for adjusting the hours and minutes of the analog display section 1 are respectively sent from the display mode selection signal S
S _A is sent out sequentially by turning on and off the switch SW _1. By applying this control signal S _A to the selection circuit 11, the seconds counter 6, minutes,
Hour counters 7 and 8 and day and day counters 9 and 10
The control signal S _B is set to "L" level in the analog correction mode and to "H" level when the analog correction mode is released. It is applied as the gate input of the AND gates 14 and 17, while it is inverted by the inverter 19 and applied to the set input terminal S of the flip-flop 20.
Further, the Q output of the flip-flop 20 is applied as a gate input of the AND gate 14, and its output is applied as a gate input of the AND gate 14, and the reset input terminal R of the flip-flop 20 is connected to the second counter 6.
A carry signal is inputted via the delay circuit 22.

Next, the operation of the electronic timepiece of the invention constructed as described above will be explained.

First, when you turn switch SW ₁ on and off,
For each operation, a display mode selection signal S _A is sent from the control circuit 18, and this selection signal S _A is sent to the selection circuit 1.
1, the count contents of the second counter 6, minute and hour counters 7 and 8, day and week counters 9 and 10, and month counter 21 are selectively sent to the decoder driver 12 side, and accordingly, the digital display section 2, as shown in block A of Figure 2, "day of the week, day of the month",
"Seconds", "hours, minutes" will be displayed sequentially.

Next, analog correction, that is, analog display part 1
A case will be described in which the "hours and minutes" of the digital display unit 2 are corrected to match the "hours and minutes" of the digital display section 2.

In this case, first, the electronic watch is selected and set to a mode in which "hours and minutes" are displayed on its digital display section 2. In this state, the control signal S _B of the switch control circuit 18 is at the "H" level as in normal times, and the output of the flip-flop 20 is also at "H", so the AND gate 14 is in the open state. Retained. Therefore, the output signal from the output circuit 13 every 10 seconds is supplied to the analog display section 1 through the AND gate 14 and the OR gate 15.
Operate this with a 10 second movement. At this time, since the control signal S _B applied to the set input terminal S of the flip-flop 20 is inverted by the inverter 19 and becomes "L", its Q output is "L", and this Q output is applied to one gate. The input AND gate 17 is turned OFF and the 6-pulse output circuit 1
6 is prohibited from being supplied to the analog display section 1.

In this state, when the switch SW ₂ is operated on and off to set the clock to the analog correction mode, the control signal S _B of the switch control circuit 18 becomes "L", and therefore, both the AND gates 14 and 17 are set to the analog correction mode.
It is in the OFF state, and the output pulses from the every 10 second output circuit 13 and the 6-pulse output circuit 16 are prohibited from being sent out on the analog display section 1. At the same time,
Flip-flop 20 is set by the inverted output of inverter 19 to "H", and makes its Q output "H". If the switch SW ₁ is turned on and off, the needle setting pulse signal P is sent from the switch control circuit 18, and this pulse signal P passes through the OR gate 15 and is supplied to the analog display section 1, thereby displaying the analog display. Part 1 “Hours and Minutes”
The display is corrected to the "hour and minute" display on the digital display section 2. For example, if the current "hour and minute" display on the digital display section 2 is "20:09", the hands on the analog display section 1 are set to this "hour and minute".

Next, upon completion of the correction of the analog display section 1, the switch SW ₂ is turned on and off again to cancel the analog correction mode, and the control signal S _B of the switch control circuit 18 goes to "H" again as shown in FIG. 4a. ” becomes. At this time, the AND gate 14 is not turned on even when the control signal S _B becomes "H" because the output of the flip-flop 20 is "L". On the other hand, even if the set input of the flip-flop 20 is inverted to "L" by the inverter 19, the AND gate 17 continues to be set in the previous correction mode, so its Q output "H" and the control signal are Turned on by S _B , 6 pulse output circuit 16
Allows output from to pass through.

Then, as the second counter 6 counts up, a carry signal P _C is generated as shown in FIG. 4b.
When the signal is sent out, the 6-pulse output circuit 16 is operated by this carry signal, and from the 6-pulse output circuit 16, six pulse signals Pmc as shown in FIG. When this pulse signal Pmc is applied to the step motor of the analog display section 1 through the AND gate 17 and the OR gate 15, the minute hand of the analog display section 1 will move as follows.
The hands are forcibly moved by six steps in accordance with the number of six pulses sent out from the six-pulse output circuit 16. In other words, turn switch SW ₁ on and off to set the pointer on analog display 1 to 20:10, which is one minute ahead of the hour and minute display set to 20:09. . Then, when the time elapses after the second counter 6 sends out the carry signal and the output of the pulse signal Pmc for 6 pulses ends, the delay circuit 12 that has received the carry signal operates and sends out a reset pulse to the flip-flop 20. 20, its output is set to "H", and its Q output is set to "L". Therefore, the AND gate 14 is gated so that the pulse signal Pm from the output circuit 13 every 10 seconds can be output to the analog display section 1, and the AND gate 17 is
It is turned OFF and returns to the normal 10-second movement mode. Furthermore, when the next carry signal is sent from the second counter 6, the "hour and minute" display on the digital display section 2 becomes "20:10", which matches the "hour and minute" display on the analog display section 1. .

Therefore, after adjusting the hours and minutes on the analog display 1 to the hours and minutes on the digital display 2, at any timing, preferably when the hours and minutes on the digital display 2 change to 20:10. '', press switch SW ₂ again to cancel the analog correction, and the hour and minute indication by the pointer on analog display section 1 will surely match the hour and minute indication on analog display section 2. At the same time, when the carry signal Pc is sent from the second counter 6 as shown in b and c in FIG. 14. The signal is supplied to the step motor of the analog display section 1 through the OR gate 15, thereby causing the hand of the analog display section 1 to move in 10-second movement.

Note that the number of output pulses of the pulse output circuit 16 for moving the "minute" display on the analog display section 1 by one minute when the analog correction is canceled is not limited to 6 pulses, but can be arbitrarily set according to the hand movement method. It is something that In addition, push-type switches SW ₁ and SW ₂
may be replaced with a reuse switch. In this case, an electronic watch with good operability can be provided to the user.

As described above, according to the present invention, after performing analog correction, n pulses (6 pulses in the embodiment) for hand movement are sent out in synchronization with the second carry signal, thereby causing the minute hand on the analog display to 1 minute”
The minute hand moves automatically, and thereafter the m-second hand moves normally, so after setting the hour and minute on the analog display to the digital hour and minute, the analog Simply cancel the correction to convert analog hours and minutes to digital hours and minutes.
The clock can be adjusted accurately, and the timing for canceling the analog correction does not require any of the conventional conditions mentioned above. Therefore, the analog display correction operation is simple and the dual time function of the watch can be used effectively. There is an effect that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an external view of an analog/digital electronic timepiece, FIG. 2 is a sequence diagram of the analog/digital electronic timepiece, and FIG. 3 is a block diagram showing an example of the analog/digital electronic timepiece according to the present invention.
FIG. 4 is a waveform diagram for explaining the operation of the electronic timepiece of this invention. 1...Analog display section, 2...Digital display section, 4
...Oscillation circuit, 5...Divide circuit, 6...Second counter, 7
...Minute counter, 8...Hour counter, 9...Day counter, 10...Day counter, 11...Selection circuit, 12...
Decoder driver, 13...10 second output circuit (n
output circuit per second), 14, 17...AND gate, 1
5... OR gate, 18... Switch control circuit, 19
...Inverter, 20...Flip-flop, 21...
Month counter, 22...delay circuit, SW ₁ , SW ₂ ...switch.

Claims (1)

[Claims] 1. Includes a digital timekeeping system and a digital display section that displays its timekeeping contents, and an m-second output circuit that takes the 1-second pulse of the digital timekeeping system as input and sends out a hand movement pulse every m pulses to move the minute hand for m seconds. an analog timekeeping system and an analog display section whose hands are operated by the analog timekeeping system; a control means which selects a display mode of the digital display section and controls its correction by operating a switch; and a control means which controls the correction of the analog display section by operating the switch; When the analog timekeeping system is returned from the analog correction mode to the normal hand movement mode by a control signal from the control means, the analog display is displayed in synchronization with the second counter carry signal of the digital timekeeping system that is first output from this point on. an n-pulse output means for continuously sending n pulses for moving the minute hand for one minute to the section, and adjusting the "hour and minute" display on the analog display section to the "hour and minute" display on the digital display section; An analog/digital electronic clock equipped with