JPS5920995B2 - Keisankitsukitokei - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a computer watch, and provides a computer watch that allows the time to be easily adjusted using the keyboard of the computer.

Furthermore, it is an object of the present invention to provide a computer-equipped clock that effectively serves as both a calculation display and a clock display. Furthermore, it is an object of the present invention to provide a computer-equipped clock that can read the clock display without error.

Since their appearance, electronic desktop calculators have been widely recognized for their usefulness and have rapidly developed.

Portable computers that are smaller, consume less power, and are lighter in weight have been commercialized. There is a desire for a calculator watch that combines such a calculator and a watch and can be used as a watch all the time, but also as a calculator when needed. The present invention provides a clock that makes effective use of the functions of a calculator to adjust the time using a keyboard.
This device has a function that prevents erroneous operations that are likely to occur when adjusting the time using the keyboard, making it easier to adjust the time.

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

FIG. 1 is a block diagram of a computer watch according to the present invention.

1 is a timing signal generator, 2 is a numeric value circuit that converts the signal sent from the keyboard 3 into a BCD signal, and the keyboard 3 is composed of tick keys, function keys, a mode changeover switch for switching between clock and calculator, and a lock switch. .

4 is the numerical register gate, 5 is the register Z) 6 is the register Y, T is the register X, 8 is the addition/subtraction gate, 9 is the addition/subtraction device, 10 is the function key control, 1
1 is an arithmetic control circuit, 12 is a clock control circuit, 13 is a clock register, 14 is a display switching circuit for switching display signals of the computer and the clock, 15 is a decoder, and 16 is a display section.

Since the arithmetic circuit is no different from a conventional circuit having an 8-digit arithmetic operation function, a detailed explanation will be omitted. Figure 2 shows the shift register of the clock circuit, the shift register control circuit, and the memory contents of the shift register, Figure 3 shows the numeral control circuit of the clock circuit, and Figure 4 shows the waveform diagram of timing pulses. be.

IT is a 4-bit shift register, and 18 is a 32-bit shift register.

The AND gate 19 is a gate that adds one by one to a specific digit signal which stores time information consisting of a plurality of digit signals Dn in a circular loop constituted by the shift registers IT and 18, using a fixed time signal t. Outputs 23, 22, 2 of 4-bit shift register 17! , 2 are binary signals with weights of 8, 4, 2, and 1, respectively.

AND gate 20 determines 10 from the outputs 23, 22, 21, 20 of 4-bit shift register 17, AND gate 21 determines 6 or more, AND gate 22 determines 2 or more, AND gate 23 determines 13 or more, and gate 2
4 makes 30 or more decisions. AND gate 20 is the second, minute, and hour digits, AND gate 21 is the 10 second, 10 minute digit, AND gate 22 is the 10 o'clock digit, AND gate 23 is the hour, 10 o'clock digit, and gate 24 is the 10 second digit. The digit of is determined, and when a predetermined code is reached, a signal is sent to a flip-flop (hereinafter referred to as FF) 25. The F-F 25 sends a carry correction signal to the upper digit, and also sends a reset signal to the AND gate 26, so that the contents sent to the shift register 18 become O. The OR gate 27 operates when the AND gate 23 detects 13 o'clock and the F-F 25 sends a set signal to the AND gate 26 so that the content of the hour digit becomes O, and sets the content of the hour digit to 1. be. As a result, the hour display of 12-1 is performed. and gate 2
8 is a gate that detects 12 o'clock and serves to invert the contents of AM and PM. and gate 29
The e terminal is connected to the lock switch of the keyboard, and when the lock switch is UNLOCK (time can be adjusted using the keyboard), the e terminal is connected to the lock switch of the keyboard. It becomes the L1 signal and cuts off the signal of the AND gate 28.

This is done by using the keyboard to change the hour digits to 12-1-12-3.
If 12 o'clock is repeatedly input like...
Since an inverted signal of M is generated, this gate prevents this signal from being input to the shift register 17, thereby preventing display switching between AM and PM display. And gate 21, 22,
23, in the conventional correction method of adding 1 at a time,
It would have been better if the AND gate 21 had the function of determining only 6 codes, the AND gate 22 2, and the AND gate 23 only 13.

However, when making corrections using the keyboard, there is a possibility that a time that is not originally displayed, for example, 00:00, may be entered by mistake. If only 13:00 is determined as in the past, it will not be possible to adjust the time to the correct time. In the present invention, "O" is detected by the OR gate 41, and F-F4
2 detects the hour digit "0" and F-F43 detects the 10 o'clock digit 80. Also, the output of F-F42 and 43 is
Sent to ANDGATE 30. Yotsute and Gate 30
detects that the hour digit of 600'2 has been set and operates the OR gate 27 to set the hour digit to "1". When a time that is not normally displayed is entered, a specific display (O or 1 in the example) is automatically displayed, so the user does not have to know that he or she has entered the number by mistake. can.

Further, when a time that is not normally displayed is entered, a means for displaying or warning may be provided to notify the time. or,
When the device has a day, month, and year display function other than those in the embodiment, it is desirable to have the same functions as in the embodiment. FIG. 3 shows the numeral control circuit of the clock circuit. The OR gate 31 is a gate that takes the timing for converting the entered number into a BCD signal and outputting the entered number.

AND gate 32 is a gate that obtains a signal for one word each time a number is input. OR gate 33 is a gate that determines the digit to be corrected. The AND gate 34 is a gate for setting AM-PM, and each time the AM/PM key is pressed once, AM-PM is displayed alternately on the display section. or gate 3
5 is a numeric signal gate, which is input to the OR gate 27. The OR gate 36 is a shift input inhibit gate, which is input to the AND gate 26, and functions to block the signal from the shift register 17 when a numeric signal is input. AND gate 37 is a second control gate, and AND gate 24
is input and is set to 00 seconds, and when the time is 30 seconds or more, +1 is added to the minute digit. The AND gate 38 is a gate for blinking the digit to be corrected at 2 Hz, so that the user can clearly know the digit to be corrected. AND gate 40 is a gate for creating an auto-clear signal for the arithmetic circuit, and the mode changeover switch changes from clock W to computer C.
When switched to , the D terminal of F-F39 changes to the 11H1 signal and an auto clear signal is generated for one word. This eliminates the need to provide an auto-clear circuit made of resistors and capacitors as in the past. FIG. 5 shows the display section of the computer watch.

Figure a is a computer display when used as a calculator,
Eight digits and a sign (E-) are displayed.

Figure b shows the clock display when used as a clock.
12:34:56 is displayed. When using a common display, it is important to clearly inform users what the current display is used for. By separating the hour and minute and minute and second digits in this manner, the computer display and the clock display can be clearly distinguished, and the time display can also be made easier to read. FIG. 6 shows time correction.

Figure a shows the display in the LOCK state (time cannot be adjusted using the keypad), and 2:23:34 AM1 is displayed.

A case where the time is adjusted to 9:35:00 PM will be explained. When the lock switch is set to UNLOCK to release the lock, it will become as shown in figure b, and the seconds digits will start blinking. In this state, when the decimal point key is pressed, the time is set to 00 seconds, and at the same time, +1 is added to the minute digit because it is longer than 30 seconds. Figure c shows this state. Next, press the function key 1 and it will look like the figure d.
The 0 minute digit starts blinking. In this state, tenkiichi (
3) When you press , it becomes as shown in figure e, and the 1 minute digit starts blinking. In this state, if you press the numeric key once, the display will become as shown in figure f, and the 10 minute digit will start blinking. Next, when you press the 7th station on the funxion key, it becomes as shown in figure g, and the AM and 10 o'clock digits start blinking.In this state, when you press 1st section]Record, it becomes as shown in figure h. .Next, when you press the numeric key once, it becomes as shown in figure i, and the PM and 1 o'clock digits start blinking.In this state, when you press the numeric key once, it becomes like figure j, and the PM and 10 o'clock digits start blinking. starts blinking. Now that the time adjustment is complete, return the lock switch to LOCK and the time will become as shown in figure K. This completes the adjustment from 2:23:34 AM to 9:35:00 PM. The adjustment order is The modification order is not limited to the example and can be changed freely.

The ``return key'' can also be used in common with other function keys, such as ``futsui'', and the same can be said for the 00 seconds.

In addition, the seconds can be corrected not by the 00 second scale, but by using the numeric keypad like minutes and hours. A.M. ．． PM
A similar function can be obtained by providing separate keys. FIG. 7 shows how to effectively utilize the display element of the display section of a computer watch.

Figure a shows how the display digits are separated by the decimal point.

Figure b is a display that combines code elements into a P shape to notify PM. Figure C is a display that notifies AM, similar to figure B. Figure d shows that the decimal point is used as a day of the week and PM indicator. As described above, the present invention can provide a computer watch that can easily adjust the AM-PM by having an AM/PM key, and can easily adjust the time using the keyboard of the computer.

The present invention also provides a computer watch that effectively utilizes the display element of a computer.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a computer watch according to the present invention.

Claims (1)

[Claims] 1. In a computer watch that has a keyboard with a numeric keypad, a function key, a clock circuit, an arithmetic circuit, and a display that also serves as a clock display and an arithmetic display, an AM/PM switching key is provided, and input information using the numeric keypad is 1. A computer watch, comprising: a detection means for detecting that the value of the hour digit is 0 o'clock; and a gate means for preventing the setting of the 0 o'clock number based on the 0 o'clock detection output of the detection means.