JPS60169791A - Global clock with calculator - Google Patents

Abstract

PURPOSE:To know arbitrarily set global time, by automatically setting time by a user without limiting the predetermined key of a keyboard to a specific city. CONSTITUTION:A city selection means 8 indicates the address of ROM10 storing the time of each city on the basis of an applied key input signal. ROM10 fixedly stores the time differential of a standard region where time is clocked on the basis of the output of an oscillation means 12 generating a reference signal by a clocking means 11, for example, Greenwich and a city corresponding to each key and the time differential selected by the means 8 is outputted to an operation means 13 from ROM10 and the result is outputted to a change-over means 7. The means 7 is in the state of world clock function and the means 13 selects and displays the time of a city. On the other hand, when the means 8 detects the closing of an operation key, ROM10 is not addressed and a memory, means 14 is selected. A time differential is preset to the means 14 by a user and the stored time differential is applied to the means 13. By this method, the time of a city arbitrarily determined by the user is displayed.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to an electronic clock having a calculation function and a world clock function. Regarding world clocks with calculators that are compatible with .

(b) Prior Art Conventionally, electronic watches with calculation functions and world clock functions have
It is disclosed in Japanese Unexamined Patent Publication No. 51-73470. In such an electronic clock, the key switch is switched by a changeover switch to input the computer input and to input the world clock display, and when inputting the computer, it inputs numbers from 0 to 9,
Four arithmetic operations, □ clear can be entered, and next to the world clock display input, each key switch corresponds to a city in each country, and by operating a key switch, the time of the city corresponding to that key will be displayed. It is.

However, the number of keys is about 16,
It is not possible to accommodate all 24-hour time differences, so time differences are set for approximately 16 major cities. Since this time difference is individually set in advance, the user cannot know the time in areas other than those set for each key.

It has the disadvantage that it is extremely difficult to use, especially for people who often travel to areas that are not set as key for business purposes.

(C) Purpose of the Invention The present invention has been made in view of the above-mentioned points, and is achieved by not limiting the predetermined keys of the keyboard to a specific city, but by using keys that allow the user to freely set the time. The purpose is to obtain a world clock with an easy-to-use calculator.

B) Structure of the Invention The present invention has a calculation function that calculates numerical values entered by keyboard operations, and a world clock function that displays the time of each region of the world set corresponding to each key of the keyboard. In the clock equipped with the above-mentioned clock, when a key operation on the keyboard is performed with the world clock function selected, a city selection means selects a time difference corresponding to the key; The device is provided with a separate clock means that operates when it detects that a predetermined key has been operated and displays the time set from the outside, so that the time arbitrarily set by the predetermined key operation is displayed.

(E) Embodiment FIG. 1 is an external view of a world clock with a computer according to the present invention. At the top of the front of the watch, there is a display device (1) that can display 8-digit numbers using a liquid crystal display, and at the bottom there are number keys for "0 to 9" and four arithmetic operation keys, etc.
Six keys (2) are provided. The display device (1) normally displays the time, but by pressing the clear key C, the calculation function and the world clock function are alternately selected. When the calculation function is selected, the number will be displayed on the display device (1) by operating the number keys from 0 to 9, and the operation of the entered number will be performed by operating the four arithmetic operation keys. The calculation results are displayed on the display device (1).

On the other hand, the number keys from "θ to 9" and the decimal point key "・"
, the addition key is ``The traps are marked with the names of the main parts of the world,
If you press the key corresponding to a city while the world clock function is selected, the time of that city will be displayed on the display [(1). Also, for the division key "÷", l'-F RE EJ
is marked, and by pressing this key,
The time of the city arbitrarily set by the user is displayed on the display device (1). When the user sets the time displayed by this division key "÷", the user must close the division key "÷" for more than 2 seconds and then close the clear key "C" within 2 seconds. , the mode is set to a separate clock correction mode, and when the subtraction key "-" is pressed in this state, +1 is added to the hour digit.

In addition, the correction of other clocks is only for the hour digits.

In addition, in the normal world clock function, clear key RCJ
Press for 2 seconds to enter alarm time correction mode, use the multiplication key "x" to select the correction digit, and use the subtraction key "-" to execute the correction. Furthermore, if you press the clear key "C" for more than 2 seconds while the alarm time is being corrected, the mode will be set to the time correction mode for the reference time or the selected city. Select the correction digit with the multiplication key "x" and press the subtraction key "-". Execute the correction.

FIG. 2 shows a circuit block for realizing the functions shown in FIG. 1. In FIG. 2, the keyboard (3) consists of the 16 keys (2) shown in FIG. Ru. The key manual means (4) is the clear key “
By detecting "C", it is determined whether it is in the calculation function state or the world clock function, and if it is in the calculation function state, the key corresponding to the key (2) closed by the subsequent key operation is pressed manually. A signal is applied to the computer means (5). At this time, the output of the calculator means (5) is applied to the display means (6) by the switching means (power), and the numbers represented by the key human input signals applied to the calculator means (5) are ) K is displayed, and the result calculated by the computer means (5) is also displayed on the display means (6).

On the other hand, when the world clock function is selected, the key human power means (4) applies a key human power signal corresponding to the closing of the key (2) to the city selection means (8) and the correction means (9). . Based on the applied key manual signal, the city selection means (8) selects the numerical keys "0 to 9" shown in FIG. 1, the decimal point key ".", the addition key "±", and the division key. Memorize the time difference of each city to detect which key "÷" is closed and select the time difference of the city corresponding to each number key, decimal point key "・" and addition key "±" Specify the address of the RoM address to be sent. ROM (10) fixes the time difference between a standard area, such as Greenwich, where the timekeeping means 0υ measures time based on the output of the oscillation means U''IJ that generates a reference signal, and the city corresponding to each key (2). The time difference selected by the city selection means (8) is R.
It is output from OMae to the calculation means 03). Arithmetic means 0
3) adds or subtracts the applied time difference and the time digit of the timekeeping means (11), and outputs the result to the switching means (power).
Since the output of 3) is selected and output to the display means (6), the result of calculation with the time difference will be displayed on the display means (6).

That is, the time of the selected city is displayed.

On the other hand, if the city selection means (8) detects the closing of the division key "÷", the ROMQOI is not addressed and the storage means (14) is selected. A time difference is previously set in the storage means t141 by the user, and the stored time difference is applied to the calculation means (1). Therefore, the calculation means u3 calculates the applied time difference and the time ←υ by the time difference. Add the digits,
Alternatively, subtraction is performed and the result is displayed by display means (6). That is, indicator 1! In i and t61, the time of a city or region arbitrarily determined by the user is displayed, not the city fixedly set on the watch, and the function of the watch as a separate watch is realized.

In addition, in the state of the world clock function, when the correction means (9) detects that the clear key "C" is closed for 2 seconds based on the applied key manual signal, the alarm means (1
51 to enter the alarm correction mode. Then, it detects the closure of the multiplication key "x" or the subtraction key "-",
Select digits for correction and execute correction. Further, in the alarm state, when the correction means (9) detects that the clear key "C" is closed for 2 seconds, the correction means (9) enters a correction mode in which the correction means (9) corrects the time measurement means (01). Then, when the multiplication key "x" and the subtraction key "-" are closed, a digit is selected and its correction is executed. At this time, if the city corresponding to key (2) is selected and displayed before entering the correction mode, if the hour digit of the timekeeping means at+ is corrected, the time difference will be calculated on the corrected hour digit. The displayed time is displayed on the display means (6
) is displayed. In other words, you can adjust the time in the selected city.

On the other hand, when changing or setting the time difference stored in the storage means 04), first specify the storage means (14) using the division key "÷", and then combine the stored time difference with the time digit of the timekeeping means aυ. The calculation results are displayed on the display means (6). In this state, if you close the division key "÷" again for 2 seconds, the time display based on the time difference in the storage means (141) will be permanently displayed. Normally, if you close the division key "÷" within 2 seconds,
It will automatically return to its original state after 2 seconds. When the correction means (9) detects that the clear key rCJ is closed within 2 seconds after entering the constant display state, the correction means (9) enters a mode for correcting the storage means (141. , when the subtraction key 1-1 is closed, the correction means (9) adds +1 to the memory contents of the storage means (141) to correct the time difference. Therefore, the time difference displayed on the display means (6) changes at the same time as the time difference is corrected.In other words, the user can set the time difference to the time in an area other than a fixed city.

(f) Effects of the Invention As mentioned above, according to the present invention, since the user can arbitrarily set the time difference in areas other than fixedly established cities, there is an advantage that the time difference is not limited by the city pressure previously set by watch manufacturers. , an easy-to-use world clock with calculator is obtained.

[Brief explanation of the drawing]

FIG. 1 is an external view of a world clock with a calculator showing an embodiment of the invention, and FIG. 2 is a block diagram showing an embodiment of the invention. (11...display device, (2)...key, (3)...
・・Keyboard, (4) ・・Key manual means, (5)
...computer means, (6) ...display means, (7)
...Switching means, (8)...City selection means, (9)
...Modification means, 00)...ROM, ([11.
...Timekeeping means, 02+...Oscillation means, (131...
・Arithmetic means, (141...Storage means, Zeng...Alarm means. Applicant Sanyo Electric Co., Ltd. and one other representative Patent attorney: Yasuo Sano

Claims (1)

[Claims] 1. A calculation function that calculates numerical values entered by keyboard operations, and a temperature control function that corresponds to each key on the keyboard.
In a watch equipped with a world clock function that displays the time in each region of the world, when a key on the keyboard is operated with the world clock function selected, the time difference corresponding to that key is displayed. a city selection means for selecting a city; and a separate clock means that operates when the city selection means detects that a predetermined key of the keyboard has been operated and displays a time set from the outside, A world clock with a calculator that displays the time set in .