JPS5842437B2 - clock with keyboard - Google Patents

Description

[Detailed description of the invention] The present invention relates to time adjustment using a numeric keypad.

The present invention provides an electronic timepiece that can be incorporated into, for example, an electronic desk calculator.

Recently, digital watches have been put into practical use that have higher accuracy than mechanical watches and can tell the time digitally.

Conventional time adjustment for such electronic watches has a pulse interval of 1
Since pulses of seconds or single pulses must be supplied to each counter separately, a switch for supplying the pulses is required for each counter, and operation is very cumbersome. .

For example, if you want to set the number 9, you must hold the switch for 9 seconds or press the switch 9 times.

Recently, calculator watches that incorporate such digital clocks into electronic desktop calculators have come to be considered.

When the present invention incorporates a clock into an object having a keyboard,
To provide an electronic timepiece in which the time of the timepiece can be easily and accurately adjusted by adjusting the number of keys on a keyboard.

The present invention will be explained below based on examples.

FIG. 1 is an external view of a calculator watch in which the watch of the present invention is incorporated into an electronic desktop calculator.

Figure 2 shows the clock control circuit of the computer watch in Figure 1, and
The figure shows a clock adjustment circuit of the computer watch shown in FIG. 1, and FIG. 4 shows the time adjustment process of FIG. 1.

The side switch SW2 is a switch for switching between the functions of the calculator and the clock.

Adder circuit 1, 4-bit shift register 2. And gate 3, 5. Time information is added and held in a circular loop using an OR gate 6.28-bit shift register 7.

AND gate 9 detects codes of 10 or more, AND gate 10 detects codes of 6 or more, AND gate 11 detects codes of 2 or more, AND gate 12 detects codes of 3 or more and sends a signal to FF 14, AND gate 13 detects codes of 13 or more, AND gate 15 is a gate that is reset and set at 1 o'clock when 13 o'clock arrives.

Explain time adjustment.

When the side switch SW1 in Figure 1 is pulled, the device becomes unlocked (correctable), the wiring line A in Figure 3 becomes "Hn", and the seconds digit starts blinking at 2Hz.

The blinking digit is the correction digit, which is basically 2 digits.

In this state, when the second key is pressed, the wiring B changes to °H'' and the minute digit starts blinking.

FIG. 4 shows this. In this state, when the second key is pressed, the wiring becomes 11 HI+ and the hour digit starts blinking.

In the unlocked state, the key number is a select key for selecting the corrected digit, and the corrected digit is selected as seconds, minutes, hours, one second, and so on.

Minute adjustment will be explained as an example of time adjustment.

FIG. 4a shows the minute adjustment state where 12:34:01 is displayed.

Further, in this state, the correction digit is selected as the minute digit by the key.

The FF21.25 in FIG. 3 is reset by the key, and the output Q becomes 6L''.

In this state, when key (2) is entered, a BCD signal signal 0100) corresponding to key ■ is generated and the AND gate 22
sent to.

Furthermore, a 1-word signal H having a time width of D1 to D1 is generated depending on the number set on the key (2), and a number signal E is sent from the AND gate 22 to the OR gate 6 in FIG.

Further, a reset signal F is sent from the AND gate 23 in FIG. 3, and the AND gate 3 resets the information sent from the shift register 2.

Therefore, the minute information becomes 2 minutes, as shown in Figure 4.

When the 1-word signal is sent, the output Q of FF21 becomes 'H.
” becomes.

- If only the digit is corrected, end here.

In this state, when a number is entered between the keys, information of 3 is sent to the OR gate 6 in the same way.

Furthermore, the AND gate 3 is activated by the reset signal F to inhibit minute information from the shift register 2.

Furthermore, since the output Q of the FF 21 is now ``H'', the AND gate 24 operates and sends the shift signal G to the AND gate 4.

AND gate 4 sends information from 4-bit shift register 8 to AND gate 5.

In this state, information 2 of the previous one-minute digit is sent.

The number signal E is always input to the 1 minute digit, and when the number is set for the second time, the information of the 1 minute digit is shifted by the shift register 8 to the 10 minute digit.

Furthermore, when the 1-word signal H ends, the output Q of FF25
becomes H''' and a correction completion mark F is displayed.

Therefore, the minute information becomes 23 minutes, as shown in FIG. 4C.

In this state, even if another key is entered, the AND gate 2
6 prohibits one-word signals, so it cannot be modified.

When the side switch is pushed in from this state to the locked state, a reset signal is sent to the FFs 21 and 25 and the correction completion mark F disappears.

This state is shown in FIG. 4C'.

If you wish to make further corrections in the state shown in FIG. 4C, press between the clear keys to reset the FF 2125.

Furthermore, a reset signal F is generated from the AND gate 23 according to the number set between the clear keys, the minute digit is reset, and the time information becomes as shown in FIG. 4d.

In this state, when the key ◯ is pressed, the result is as shown in Fig. 4e in the same manner as shown in Fig. 4.

If you enter a number between the clear keys, you can enter the number two more times.

When the clear key interval is set, it is 00 minutes. It is set like 1 o'clock.

When a non-existent time such as 61 minutes is entered, the upper digits are reset.

For example, at the 61st minute, the AND gate 10 is activated and the 10th minute digit is reset to become 01 minutes.

The carry signal at this time is generated at the same time as the 1 word signal H, and the 2
It is prohibited by a two-word signal with twice the time width.

When 13:00 to 19:00 is set during hour correction, AND gate 15 is activated by a 2-word signal and the reset signal is prohibited, and AND gate 16 is activated and reset to the 10:00 digit by FF 17. Since a signal is sent, for example, 13:00 becomes 3:00.

Furthermore, when the key interval is set and it reaches 00 o'clock, FF18
, 19 act and send a signal from the AND gate 20 to set the 1 o'clock digit to 1.

In the embodiment, a clock with hour, minute, and second functions was explained, but the invention is not limited to this. vI/PM.

It can be used in the same way for clocks that have functions such as reading, year, and day of the year.

The present invention is not limited to watches, but can be used for anything that deals with time.

Examples are alarm set, timer set for one hour, stopwatch, and time calculation.

The modification end mark may be used, for example, as a computer error mark E, which may be shared with other display elements instead of being newly provided.

As shown in the above example, the correction digit can be corrected by setting the number twice at most, so if the correction is separated by two numbers, the user can easily understand the correction, and by displaying the correction completion mark. You can see that it cannot be fixed.

If you want to make further corrections due to a mistake in the numbers entered, you can make new corrections by entering the clear key.

If a non-existent time is entered by mistake, it will not be displayed, so you can correct it with confidence.

In this way, it is possible to provide a timepiece that can be easily corrected and is free from the troublesome corrections required in the past.

[Brief explanation of drawings]

FIG. 1 is an external view of a calculator clock in which the clock of the present invention is incorporated into an electronic desk calculator. Figure 2 shows the clock control circuit of the computer watch in Figure 1, and
The figure shows a clock correction circuit of the computer watch shown in FIG. 1, and FIG. 4 shows a time correction process shown in FIG. 1.

Claims (1)

[Claims] 1. In a watch with a keyboard, which has a keyboard including at least a numeric keypad, and in which the time is adjusted by inputting a number signal corresponding to the number entered on the numeric keypad into the correction digits, the correction digits for hours, minutes, and seconds are set to two. In addition to providing a select switch for selecting digits one by one, a detection circuit 21 and 25 is provided to detect that a number has been entered twice using the numeric keypad, and a gate that prohibits the third and subsequent number entry based on the output of the detection circuit. A clock with a keyboard characterized by being provided with a circuit 26.