JPS5844231B2 - wristwatch with calculator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a time adjustment method for a wristwatch with a calculator.

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

Progress has been made in various aspects such as higher integration, lower voltage, and lower power consumption.

Portable electronic desk calculators that are smaller, consume less power, and are lighter in weight have begun to appear.

Electronic watches that consume less power have become commonplace.

A wristwatch with a calculator that combines these two functions is desired.

When adjusting the time of such a wristwatch with a calculator, the time can be adjusted using the computer's keyboard, making it easier and faster to adjust the time than with conventional adjustment methods.

However, if a keyboard is placed in a limited space like a wristwatch, it becomes impossible to enter numbers with one's fingers unless the number of keys is reduced.

Reducing the number of keys complicates the calculation method, which is not desirable.

Therefore, keys must be operated using a jig with a narrow tip.

However, this jig must be carried with you at all times.

It is conceivable to carry this jig on a wristwatch band or to have the band have this function, but this is not preferable because the method of use is limited.

In particular, when adjusting the time, since the adjustment can be made using at least one external operating member, the operability is significantly reduced.

The present invention is an embodiment of a wristwatch with a calculator that allows the time to be easily adjusted using a keyboard when the jig is present, and by an external operating member when the jig is not present.

The present invention will be explained below based on examples.

FIG. 1 shows a block diagram of a wristwatch with a calculator using the present invention.

1 is the timing signal (φ, t1~t,, D1~Dll・
...) Generator circuit, 4 is a keyboard, consisting of a numeric keypad, function keys, and switches 1, 2, and 3.

Switch 1 is a lock switch and controls switches 2 and 3.

Locked by operating switch 1 (time cannot be adjusted)
When this happens, switch 2 becomes a mode changeover switch that switches between computer display and clock display.

When the computer is displayed, it can be used as a computer by operating the keyboard 4.

Although the switch 3 is not used in this embodiment, it is preferable to use a lamp drive switch for lighting the liquid crystal display when the liquid crystal display is used.

Further, when the device is in an unlocked state (time can be adjusted) by operating switch 1, a clock is displayed, switch 2 is a select switch for specifying the correction digit, and switch 3 is a set switch for correction.

The time can also be adjusted using the keyboard.

5 is a register gate, 6 is register X, γ is register Y, and 8 is register Z.

9 is an addition/subtraction gate, 10 is an adder/subtractor, 11 is a function key control circuit, 12 is an arithmetic control circuit, 13
1 is a clock control circuit, and 14 is a clock register W.

Reference numeral 15 denotes a display signal switching circuit for switching between the calculation signal and the clock signal, and is controlled by the switch 2 of the keyboard 3.

16 is a decoder, 17 is a display unit, 2 is a timing signal control gate, and when the clock is displayed, the arithmetic circuits 5 to 10.
12 is prohibited.

This allows low power consumption.

Since the arithmetic circuit is the same as the conventional circuit, a description thereof will be omitted.

FIG. 2 shows a control circuit for the timepiece circuit of the present invention, and FIG. 3 shows a modification circuit combined with FIG. 2.

The frequency dividing circuit 20 divides the timing signal t1 to 128H.
z is sent to the adder circuit 23 through the AND gate 21.

The addition circuit performs addition 128 times per second.

The shift register 24 is a 4-bit shift register, and the output passes through AND gates 27, 28 and an OR gate 29, and is sent to a 40-bit shift register 30.

When F and F31 reach the set code, the reset signal is sent to the AND gate 28, and the set signal is sent to the AND gate 33.
The OR gate 29 passes through the signal and sends a carry signal to the OR gate 37.

Addition circuit 23 takes timing by AND gate 38
sent to.

In the example, φ is 16384Hz and tn is 4096
It is Hz.

The function of this circulation loop is the same as the conventional function, so a description thereof will be omitted.

However, since seconds and minutes and minutes and hours are separated by one digit,
The OR gate 32 adds a reset to the information of this digit.

Further, F, F34 and 35 are memory for carry signals and are sent through OR gates 36 and 37.

Next, time adjustment will be explained.

Modification using external operating members.

The output Q of F and F2O is ・I (when it is IT, it is in a locked state and the seconds F and F43 are set (Q is ・H=1).

However, this is prohibited by AND Gate 5T.

In this state, when switch 2 is operated, the display changes to F,
The output Q of F51 is inverted.

When switch 1 is operated and the Q of F and F50 becomes .Hν., the unlocked state is reached.

When the watch is unlocked, the seconds F and F43 are set, so the seconds are corrected.

In this state, when switch 2 is operated, the minute F, F44
is set and the amount is corrected.

In this state, when switch 2 is operated, the time is F, F45.
will be corrected when set.

As described above, the correction order can be made in the order of seconds, minutes, hours, one second, and so on.

When the switch 3 is operated while the seconds F and F43 are set, the AND gate 42 is operated and the OO regulation signal is sent to the AND gates 28 and 55 through the wiring.

Therefore, the seconds digit becomes 00 seconds.

If 30 seconds or more is displayed, AND GATE 5
5 works and +1 is added to the minute digit.

When the switch 3 is operated while the minutes F and F 44 are set, the AND gate 46 is operated and a correction signal is sent from the wire E to the OR gate 3 through the AND gate 48.
7 and +1 is added to the minute digit.

When +1 is performed at the 59th minute, it becomes 0 by the reset signal.
It becomes 0 minutes.

In addition, the AND gate 49 works and transmits the carry prohibition signal to the wire F.
Since the signal is sent to the AND gate 56, the carry signal to the hour digit is prohibited.

When switch 3 is operated while F and F45 are set, AND gate 47 is activated, passes through AND gate 48, and transmits a correction signal from wire E to OR gate 37.
+1 is added to the digit at the time of sending.

Next, make corrections using the keyboard.

Press the function key EEE on the keyboard to set the second F.
, F43 are set.

Similarly, the minute F and F44 are set by the key wa sickle, and the hour F and F45 are set by the key [niuyo].

Therefore, the modification order can be arbitrarily selected.

When the key ■ is pressed while seconds F and F43 are set, the AND gate 41 is activated and the AND gate 4 is activated.
2, the 00 standard signal passes through the wiring, and the Antogame 1-2
It is sent to 8,55 and the second digit becomes 00 seconds.

If 30 seconds or more is displayed, AND GATE 5
5 works and +1 is added to the minute digit.

When Ki→■ is set, the AND gate 52 operates and sends a set number signal to the OR gate 29 from the wiring A.

Also, the AND gate 53 operates and a shift control signal is sent from the wiring C to the AND gate 27, so information from the shift register 24 is inhibited and the information of 3 is transferred to the OR gate 27.
9 to the shift register 30.

Therefore, the seconds information is 30 seconds. In this way, seconds are corrected in units of 10 seconds, such as 00, 10, 20, 30, 40°50.

With minutes F and F44 set, when a key country is entered, the AND gate 52 operates and sends a number signal to the OR gate 29 from the wiring A.

Further, the AND gate 53 is activated and a shift control signal is sent from the wiring C to the AND gate 27, so that the minute information from the shift register 24 is inhibited and the information of 1 is sent from the OR gate 29 to the shift register 30.

Therefore, the minute information is 01 minutes. Next, when the Kiko Tsukasa is set, the AND gate 52 operates and sends a set number signal to the OR gate 29 from the wiring A.

Furthermore, since the AND gate 53 is activated and a shift control signal is sent from the wiring C to the AND gate 27, the information from the shift register 24 is inhibited.

Furthermore, the AND gate 54 operates and a left shift control signal is sent from the wiring B to the AND gate 26, so that the information in the 4-bit shift register 25 is sent to the AND gate 28.

Since the shift register contains information of 1 in the minute digit, information of 5,1 is sent to the shift register.

Therefore, the minute information is 15 minutes.

For example, if you want to correct the time to 23 minutes, enter ■ and ■ and the displayed contents will become 02 minutes and 23 minutes.

Adjusting the hours is the same as adjusting the minutes; if you want to adjust 12 o'clock, enter [], [1 and the displayed content will be 1 o'clock, 1
It's 2 o'clock.

F and F39 are F and F for automatic locking, and in the unlocked state, when there is no correction operation for a set time or more, the locked state is automatically set.

The actual correction circuit includes a chattering prevention circuit, a correction digit designation circuit that blinks to notify you of the digit to be corrected, and a number control circuit that prevents a time that is not displayed (for example, 67 minutes) from being entered in the correction method using the keyboard. It is composed of etc.

Clock signal φ of shift register 24.30 is 1638
Since the frequency is 4 Hz, the number of elements can be reduced by using a dynamic shift register.

However, since the memory is constantly circulated, power consumption increases, making it undesirable as a clock.

Therefore, a static or semi-static type shift register is used, and the output of the frequency dividing circuit is set to 16 Hz, so that it is added 16 times per second, and the clock signal φ is input to only the loop whose power is being calculated, and the circuit circulates. It is desirable to have a circuit configuration that is

In a dynamic shift register, there is a possibility that the oscillation of the crystal oscillator or the like will stop due to disturbances, causing the stored information to disappear.

When affected by such disturbances or when the storage time is set to be longer than the period of addition, it is desirable to use a dynamic shift register configuration.

Output φ' of AND gate 22 instead of clock signal φ
This can be achieved using .

This loop is also used to adjust the time.

Corrections using external operating members have high utility value, even if only for a certain number of digits.

As described above, the present invention has a time adjustment function from both the keyboard and external operation member, and instead of providing an external operation member for time adjustment, it is also used as an external operation member for other functions. It is.

To provide a wristwatch with a calculator that allows a user to adjust the time by selecting an easy-to-use option.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a wristwatch with a calculator using the present invention.
FIG. 2 shows a control circuit for a timepiece circuit according to the present invention, and FIG. 3 shows a correction circuit for a timepiece circuit according to the present invention.

Claims (1)

[Claims] 1. In a wristwatch with a calculator, which has a keyboard that uses the numeric keypad and function keys of a calculator, and an external operating member other than the keyboard, the wristwatch is equipped with a correction circuit that is controlled by a signal from either the keyboard or the external operating member, and A wristwatch with a calculator, wherein the correction circuit includes a correction digit selection circuit, and selection and correction of correction digits are performed by operating either the keyboard or the external operating member.