JPS5941154B2 - clock with keyboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to time adjustment of an electronic watch having numeric keys.

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

Conventional time adjustment for electronic watches like this requires that pulses with a pulse interval of 1 second or one pulse be supplied to each counter separately, so switches for supplying pulses must be set separately for each counter. One counter is required for each counter, and the operation is very troublesome. for example,
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 begun to be considered.
The present invention provides an electronic timepiece having such numeric keys in which the time can be easily and accurately adjusted by operating the numeric keys.

Hereinafter, the present invention will be explained based on examples.

FIG. 1 is a block diagram of an electronic watch (watch with keyboard) having numeric keys according to the present invention.

1 is a timing signal (φ
, , ~, 4, D, ~D8) Generating circuit; 2 is a keyboard, which is composed of a ticker, correction digit designation keys (S, M, H), and a prefix switch.

3 is a house control circuit which converts the number of Chikki houses into a BCD house number signal.

4 is a correction circuit, 5 is a control circuit, 6 is a register, T is a decoder, and 8 is a digital display section.

FIG. 2 shows the register and control circuit.

Adder 9, shift registers 10, 16, and gate 1
3, 14, the time information is added and stored in a circular loop by the OR gate 15, and when the set code is reached, F-
Fl7 and others act to send a carry signal to the AND gate 18, a reset signal to the AND gate 4, and a set signal to the OR gate 15 through the AND gate 19.

Under normal conditions, this circular loop is no different from the conventional method, so a detailed explanation will be omitted. Explain time adjustment.

FIG. 3 shows the correction circuit, and FIG. 4 shows the display contents. Figure 4a shows the normal state, 12:03
5 minutes 56 seconds is displayed. From this state 10:45
The process of adjusting the time to minutes 00 seconds will be explained. The state shown in FIG. 4a is a locked state (time cannot be adjusted), and the "L1" signal is sent from the lock switch on the keyboard.

In this state, second F-F22 is set (Q is “H”).
), but it is prohibited by AND gate 25. In this state, when the lock switch on the keyboard is pulled to unlock it (time can be adjusted), the signal from the lock switch becomes 6H. When this state is reached, the AND gate 25 operates and sends the signal from the second F·F 22 to the AND gate 27. Further, the OR gate 33 works and sends a blinking signal so that the seconds digit blinks, so the display contents become as shown in FIG. 4b, and the seconds digit starts blinking.
The user can know the corrected digit by blinking. In this state, when the key is operated, the AND gate 26 operates and sends one word signals D1 to D8. The AND gate 27 operates and sends the 00 standard signal C to the AND gate 20 in FIG. AND gate 20 is a gate that detects 30 seconds or more, and since h in FIG. 4 is 57 seconds, AND gate 20 operates and sends a signal to F-Fl7. F-Fl7 sends a carry signal and a set signal. Therefore, +1 is added to the minute digit. Also, the AND gate 31 in FIG. 3 operates and sends the shift control signal B to the AND gate 13 in FIG. Therefore, second information from the shift register 10 is prohibited. As a result, the seconds sent to the shift register 16 become 00, and the display contents become as shown in FIG. 4c. In this state, when the correction digit designation key is pressed, the minute F-F23 is set, and the OR gate 33 operates in the same way as for the seconds and sends a blinking signal so that the minute digit blinks. The displayed contents are as shown in FIG. 4d.
In this state, if you set the key group, and gate 3
1 acts, and the shift control signal P is passed through the AND gate 13 in FIG.
, and inhibits minute digit information from the shift register 10. Also, the BCD signal representing "41" is output from the OR gate 21 in FIG.
As and gate 30 to 1 to or gate 15 in Figure 2
Sent at minute digit timing. Therefore, the minute digit becomes information 04, and the displayed content becomes as shown in FIG. 4e. In this state, when the keys are operated, the AND gate 31 operates in the same manner, sends the shift control signal P to the AND gate 13, and inhibits minute digit information from the shift register 10.
Similarly, the AND gate 30 operates and sends the digit signal A to the OR gate 15 at the timing of one minute digit. Also, F-F2
Since the output Q of 8 is 6H'', the AND gate 32
operates and sends the left shift control signal D to the AND gate 12, which operates and sends the signal from the 4-bit shift register 11 to the AND gate 14. T-F28
This is to detect that the first digit key input has already been made. 4 information is sent from the shift register 11. Therefore, the information becomes 45, and the displayed content is the 4th one.
It will look like Figure f. The state shown in FIG. 4D is the first state, and when the key group is operated, the minute digit is cleared by the AND gate 13, and the digit signal of 4 is inputted into the 1 minute digit by the OR gate 15. The state shown in FIG. 4e is the second state, and when the key (5) is operated, the minute digit is cleared by the AND gate 13, and the digit signal of 5 is input into the 1 minute digit by the OR gate 15. At the same time, since information 4 on the 1-minute digit before the key (5) was operated is stored in the shift register 11, this information is input from the AND gate 12. The information for 4 is shifted to the 10th minute digit.

FIG. 4f shows this state, which means that the first state has been returned. Next, when the correction digit designation key V, which explains the function of F-F28, is pressed, F-F23 is set, and the output Q of F-F28 becomes L'' due to the reset signal R. This output Q becomes "L". This state is a first state in which, when a number is entered, the upper digit of the correction digit is reset and the entry signal is input to the lower digit of the correction digit.

When the first number is finished, the AND gate 26 returns F.
-The output Q of F28 is inverted from 6L'' to ``H''.

This "H" state controls to input the numeric value signal to the lower digit of the correction digit when numeric entry is performed, and to shift the contents of the lower digit before correction to the upper digit of the correction digit. Second
The state will be as follows. When the second number is entered, the AND gate 26 inverts the output Q of the F-F 28 from "H" to "L" and returns to the first state.

The same process is repeated, and when the number is entered an even number of times including O, the output Q becomes "L" and becomes the first state, and when the number is entered an odd number of times, the output Q becomes "H" and becomes the second state. Therefore, if you notice an incorrect input and enter the number a third time, the upper digits will be reset in the same way as the first number, and the third digit signal will be input to the lower digits, making corrections extremely easy. Next, in the state shown in Figure 4 f, when the correction digit designation key ring is pressed, the hour F-F24 is set and the OR gate 33 is activated to send a blinking signal so that the hour digit blinks.Display contents will be as shown in Figure 4g. In this state, if you operate the key, the result will be as shown in Figure 4h, in the same way as the minute correction. In this state, if you operate key 6, the result will be as shown in Figure 4h. The display contents will be as shown in Fig. 4 1. Now that the time adjustment is complete, push the lock switch to lock it, and the display will be as shown in Fig. 4 j. The display will be as shown in Fig. 4 b. When the key (2) is operated, the AND gate 31 operates, sends a shift control signal P to the AND gate 13, and inhibits second digit information from the shift register 10.

Also, the AND gate 30 is activated by the OR gate 21,
The digit signal A is sent to the OR gate 15 in FIG. Therefore, the seconds information sent to the shift register 16 is 20, and the display content becomes as shown in Figure 4c''.In this way, seconds can be corrected in units of 10 seconds. In the modification, when the key is operated 6 times or more, or gate 3
4 acts and sends a signal to AND gate 39 to inhibit the signal from AND gate 26. Therefore, it will not be modified. In the state shown in Fig. 4d, when keys 6 to (9) are operated, the OR gate 34 is activated and F-F4O, 4l
Set.

When the key (7) is operated, the display contents are as shown in Fig. 4 e''
become that way. In this state, when keys 6 to (9) are operated, the OR gate 38 is activated and the F-F 28 is reset. When F.F.28 is reset, the AND gate 29 is activated and F.F.4O, 4l are reset. F-
Since F28 is set, AND gates 30 and 31 operate, and when key (2) is operated, the result is as shown in FIG. 4 f'. When a time that is not normally displayed, such as 72 minutes, is entered, the content of the last key operated is input.

Figure 4 1'' is similar, and shows the display contents when 13 o'clock is set. In the state of Figure 4 g, when key 6 is operated, AND gate 37 is activated. Since the signal is sent to the AND gate 39 and the signal from the AND gate 26 is prohibited, it is not corrected.Furthermore, when 2 o'clock to 9 o'clock is displayed as shown in Fig. 4 1', , when the key 6 is operated, the AND gate 37 operates, sends a signal to the AND gate 39, and inhibits the signal from the AND gate 26, so that in the unmodified embodiment, it only has the functions of hours, minutes, and seconds. The same applies to functions such as the day of the week, day of the month, month, year, etc., but is not limited thereto.

Seconds can also be corrected in the same way as minutes. In a watch with a calculator, it is desirable that the correction digit designation key be shared with the function key of the calculator. The present invention can be used in stopwatches, alarm clocks, etc.
As described above, the present invention includes first flip-flops (22 to 24) for selecting correction digits two by two, and a second flip-flop (28) whose state changes depending on the number of times the number keys are operated. Therefore, any correction digit can be selected and only the selected two correction digits can be corrected using the key switch.

Moreover, when a numeric key is operated, a numeric value signal corresponding to the numeric key is input to the lower digit of the correction digit, and when two digits are corrected, the previously input information is shifted to the tens digit. Therefore, when the tens place of the hour, day, month, year, etc. is 0, there is no need to operate the 6 keys such as 0) 11 [], 6 (5), etc. It can be corrected by operation. Furthermore, even if an incorrect input is made, it can be corrected by pressing the key a third time, making it possible to make corrections extremely quickly and easily. Furthermore, if the present invention is developed, when a time that is not originally displayed is entered, only the last operated number signal can be input.
It is also possible to prevent erroneous operations. Brief explanation of the χj plane FIG. 1 is a block diagram of the keyboard-equipped watch of the present invention.

Claims (1)

[Claims] 1. A keyboard for adjusting the time, a plurality of first flip-flops for specifying correction digits every two digits, and a second flip-flop having first and second states for controlling the number input by the keyboard. a first means for resetting the upper digits of the correction digits according to a digit signal from the keyboard and inputting a numeral signal to the lower digits; a second means for transferring a signal of a lower digit to a higher digit and inputting a numeric value signal to a lower digit, and said second flip-flop is configured to transfer a signal of a lower digit to an upper digit and input a numeric value signal to a lower digit; The modification by the first means is carried out;
When the second flip-flop is in the second state, when a number is input using the keyboard, the second means performs a correction, and the second flip-flop is configured to input a number using the keyboard at a specified correction digit. 0
A timepiece with a keyboard, characterized in that the first state is reached when an even number of entries is made, and the second state is entered when an odd number of entries is made.