JPS581229A - Converting method between japanese era and christian era - Google Patents

Abstract

PURPOSE:To easily make conversion from the Christian era into the Japanese era and vice versa with flexible correspondence to various year numbers, by providing the difference of years between the Japanese and Christian eras and information as to the Japanese year name externally as converting constants. CONSTITUTION:The difference of years between the first year of Meiji, Taisho and Showa era and the Christian era are respectively 67, 11 and 25 and the year code for Meiji, Taisho and Showa are respectively denoted as (1), (2) and (3). In converting the 10th year of Taisho into the Christian year for example, 2 is set to the year code register of an input data set section and 10 is to a Japanese era register. This value is inputted to a conversion constant set section 2 via a decoder. The converting constants 67, 11 and 25 corresponding to respective era codes are set to a digital switch group of the section 2 and the converting constant 11 corresponding to the code 2, Taisho is displayed on a display section. The data 10 from the Japanese era register is added at an operation section and the result of the Christian era 1921 is displayed. The conversion between the Christian to the Japanese era can be converted with the inverse calculation.

Description

[Detailed Description of the Invention] The present invention provides a Japanese calendar/Western calendar conversion method, in particular, information corresponding to the Japanese calendar, the senior year of the Western calendar, and the Japanese calendar era code is given from the outside as conversion constants, thereby converting the Japanese calendar to the Western calendar. Alternatively, it relates to a Japanese calendar/Western calendar conversion method that can convert from the Western calendar to the Japanese calendar.

In general, in matters such as resident registration and medical affairs, dates are almost always written in the Japanese calendar (Meiji, Taisho, Showa). In particular, when it comes to people's dates of birth, the Japanese calendar is used for documents used domestically, and the Japanese calendar is used for other calendars used in daily life, but the Western calendar is used only in special cases or for special purposes. This is the custom in our country.

However, from the perspective of actually processing information,
The Japanese calendar has discontinuities between era names, making it difficult to process as is. For example, when calculating age from date of birth, it is easy to calculate age from date of birth written in the Western calendar. However, calculating age from the Japanese calendar is a little complicated; (1) In addition to the information on the Japanese calendar, the Japanese calendar and the age between the four levels are required. (2) If a new Japanese calendar appears in the future, a situation will arise in which the existing program will have to be changed. In particular, in the conventional conversion method, the in-machine interface was unilaterally changed to the Western calendar, and in the end the operator converted from the Japanese calendar to the Western calendar and then inputted the data in the Western calendar. Therefore, in the conventional method, data must be converted at the time of input, making the conversion process cumbersome, and there is a fee to convert the Western calendar to the Japanese calendar again on the output side such as forms, which is cumbersome and can cause errors. It also became.

In addition, in cases where a large number of information processing devices are distributed in various locations and operate independently, when the new year of the Japanese calendar occurs,
The work of modifying programs becomes enormous, and if those programs are converted into firmware, the ROM
Rewriting the element is also a membership fee.

The purpose of the present invention is to solve the above-mentioned problems, and to flexibly deal with various eras by externally providing conversion constants between the Japanese and Western calendars and numerical values corresponding to the Japanese calendar years, without changing the machine interface. It provides a method for converting the Japanese calendar to the Western calendar.

For this reason, in the Japanese calendar/Western calendar conversion method according to the present invention, the Japanese calendar/Western calendar is converted into the Western calendar, and the Western calendar is converted into the Japanese calendar.
In the Western calendar conversion method, an input means for inputting the Japanese calendar or Western calendar to be converted, a plurality of conversion constant output means for providing conversion constants between the Japanese calendar and the Western calendar, a calculation means and a latest year input means are provided. The conversion constant output means is selected in response to a selection input to perform a conversion operation, and when the Japanese calendar is not selected, conversion control is performed based on the latest era name.

Before describing the present invention in detail based on embodiments, its principle will be briefly explained based on FIG. W41 and FIG. 2.

The first year of the Meiji era was 1868 in the Western calendar, and the year was Vi67. Similarly, since Taisho 1 is 1912 in the Western calendar, the oldest person is 11.
The first year of the Showa era was 1926, so the oldest person was 25.
It is. Therefore, as shown in Figure 1, if you set the year code and convert Taisho 10 to the Western calendar, with Meiji as ■, Taisho as ■, and Showa as ■, r21 is the sum of r10j and "11" of ■. Since ko is the last two digits of the Western calendar, we can calculate the year 1921.

Conversely, when calculating the Japanese calendar from the Western calendar, as shown in Figure 2,
If you enter the year code■ and "21", 10 will be added to this 21.
Adding 0 and subtracting "11" from 9r121J and the year code ■, 121-11-110 is calculated, and the last two digits are "11".
10", it is required that the year is Taisho 10.

Next, one embodiment of the present invention will be described based on FIGS. 3 and 4.

FIG. 3 shows a data input/output section in the present invention, and FIG. 4 is a configuration diagram of one embodiment thereof.

In the figure, l is the input data general constant part, 2 is the conversion constant setting part, and 3
is an output fitting part, 4 is a binary-decimal number decoder, and 5-1~
5-4 is an OR circuit, 6 to lO are digital switches,
11S12 is an IO base-binary number depuder, 13 is an arithmetic unit,
14 is a binary/decimal number decoder, 15 is an era code converter, 0 person data setting section l is where the year and era name to be converted are set, and the era code register l-L Japanese Akebono. A register l-2 and a 9*wiv register (not shown) are provided. Then, when the year to be converted is input from the input data setting section 1 by an appropriate means, for example, when converting 10 Taisho, when inputting the era code ■ and 10,
"2" is input to the year code register 1-1, and "10" is input to the Japanese calendar register 1-2.

The conversion constant setting section 2 is provided with digital switches 6 to 10. The digital switch 6 is composed of a digital switch 6-1 indicating the l digit and a digital switch 6-2 indicating the hundredth digit. Similarly, the digital switch 7 is composed of a digital switch 7-1 indicating the l digit 1
Consisting of a digital switch 7-2 that indicates the 0 digit,
The digital switch 8 is a digital switch 8-1 indicating the 10th place and a digital switch 8 indicating the 10th place.
-2, and the digital switch 9 is composed of a digital switch 9-1 indicating the l digit and a digital self-switch 9-2 indicating the lO digit. When a number is set, an output is produced in the number 0g1I according to this number, and the digital switch 6 is set to "67" corresponding to the year seed ■.
Ninth setting, digital switch 6-1 is r7J
K is set, the digital switch 6-2tir6J is set, and the set value is displayed on the display section.

In this way, the digital switch 7 changes the year code ■
The digital switch 8 is set to "25" corresponding to the year code -. The digital switch 10 then selects the year code r3. corresponding to the latest year, Showa. is set.

The output display section 3 is a section where the converted results are output, and includes year code registers 3-1 and tFl registers 3-1.
2 and a Japanese calendar register (not shown) are provided.

When converting vht 1985 into the Western calendar, set "3" in the year code register l-1 of the input data setting section l, and set "56" in the Japanese calendar register 1-2.

Due to the year code Regny 1-IK set to "3", the binary/IO base number decoder 4 outputs rlJ to the terminal "3", which is output to the digital switches 8-1 and 8 via the OR circuit 5-3. Output rlJ to -2. This causes digital switch 8-2 to r2J, 8-1 to "5"
"25" is output, and the decimal/binary decoder 11
This "25" is converted into a binary number. Then, the arithmetic unit 13 adds "56" transmitted from the Japanese calendar register 1-2 and this "・25", resulting in "
81'' is output as a binary number. And this is binary
The 1O base number decoder 14 outputs the decimal number "81" and sets it in the Western calendar register 3-2. In addition, the output rlJ of the OR circuit 5-3 is also separately input to the terminal B of the year code converter 15,
outputs "3" and sets this in the 30th year register 3-1 of the output display section. Then, the output display section 3 displays the conversion result 0r81J in the Western calendar display category Kll, and displays it in the "3" dormitory year display category of the Showa era code.

If the year code is not input during this conversion, "O" is set in the year register l-1, and "1" is output to the digital switch 10. At this time, the digital switch log is set to "3" indicating the latest year, so rlJ is output from the terminal r31, and the digital switch 8-18-2rcr IJ is output via the OR circuit 5-3. Output.

In this way, calculations similar to those in the above case are performed.

Nine digital switches 9-L and 9-2d are for backup, and for example, when a new year's name is set, it is possible to respond to this by setting a setting value for it.

Conversely, when converting from the Western calendar to the Japanese calendar, this can be obtained by causing the calculation section 13 to perform the same calculation as described for Figure #12.

As described above, the conversion method according to the present invention converts the Japanese calendar according to daily practice into the Western calendar without changing the program, etc. by simply providing only the conversion coefficient and era code as setting constants from the outside. , it can easily handle conversion from the Western calendar to the Japanese calendar.

[Brief explanation of drawings]

1 and 2 are detailed explanatory diagrams of the present invention, FIG. 3 is a data person output section in the present invention, and FIG. 4 is a purchase diagram of an embodiment of the present invention. In the figure, ltl! Input data setting section, 2 is conversion constant setting section, 3 is output display section, 4 is 2-way/decimal decoder, 5-
1 to 5-4 are OR circuits, 6 to lO are digital switches, 11S12 is a decimal/binary decoder, 13 is an arithmetic unit, 14F is a 2-way/decimal decoder, and 15 is an year code converter. Applicant Fujitsu Ltd. Representative Patent Attorney Akira Yamatani

Claims (1)

[Claims] (1) In the Japanese calendar/Western calendar conversion method that converts the Japanese calendar to the Western calendar and the Western calendar to the Japanese calendar, an input means for inputting the Japanese calendar or Western calendar to be converted and a conversion constant between the Japanese calendar and the Western calendar are provided. A plurality of conversion constant output means, calculation means, and latest year input means are provided, and the conversion constant output means is selected to perform a conversion operation in response to a selection input of a Japanese calendar, and when the Japanese calendar is not selected. Japanese calendar/Western calendar conversion method 0 characterized by performing conversion control based on the latest year name