JPH06119387A - Data conversion processor - Google Patents

Abstract

PURPOSE:To enable a retrieval system to recognize an new era name without changing a retrieval document system program by recording an era name conversion table in a nonvolatile reloadable memory. CONSTITUTION:An era name conversion table 10 to be referred to when a conversion processing part 1 displays the date attribute of a document with the era name, is held in a nonvolatile reloadable memory(EEPROM) 9. In the era name conversion table 10, pairs of era name data 12 and date attribute data 13 are present only in a number indicated by an era name table number 11. And also, at the time of preparing the retrieval document system, the era name conversion table 10 is stored in the EEPROM 9 only once. That is, the conversion table 10 is held in the EEPROM 9, so that the retrieval system can be allowed to recognize the new era name only by activating a program for changing the era name conversion table 10 without changing the retrieval document system program of a main program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a date conversion processing device capable of converting a search document system without changing the program even when changing to a new year.

[0002]

2. Description of the Related Art FIG. 4 shows the configuration of a date conversion processing device in a conventional search document system. In FIG. 4, 1 is a conversion processing unit, 2 is a database search processing unit, 3
Is a database, 4 is a display device, 5 is a keyboard, and 6 is a display control unit. Reference numeral 7 is date attribute data of the document in the database 3, and 8 is a memory in the database search processing unit 2.

The year data input from the keyboard 5 is converted into date attribute data by the conversion processing unit 1.
The database search processing unit 2 passes the date attribute data as an inquiry to the database 3, and stores the date attribute data 7 of the obtained search result in the memory 8. In the database search processing unit 2, the date attribute data 7 of the stored search result document is converted into year data in the conversion processing unit 1, and the year data is displayed on the display device 4 as a document or document attribute by the display control unit 6. indicate.

Generally, in this type of search document system, the means for displaying the year is converted by using the year conversion table that the system has as standard, but year numbers such as "Showa" and "Heisei" The conversion processing unit 1 uses the database 3 and the database search processing unit 2 as described above.

[0005]

However, in the conventional date conversion processing device, when the conversion processing unit 1 converts year data into date attribute data or date attribute data into year data, conversion processing is performed. Since the conversion table stored in the ROM inside the unit 1 is used, there is a problem that the ROM or the program must be changed in order to make the system recognize a new year.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and an object of the present invention is to provide a date conversion processing device which allows a system to recognize a new year without changing a search document system program. It is what

[0007]

In order to achieve the above object, the present invention uses a year conversion table referred to when displaying the date attribute of a document and year input data as the date attribute of the document. The year / year conversion table to be referred to when passing to the search processing is held in the same non-volatile rewritable memory.

[0008]

[Function] By recording the year conversion table in the non-volatile rewritable memory, the search document system program that refers to it is not changed, and a new year can be set by simply activating the program that changes the year conversion table. It is possible to let the search system recognize it.

[0009]

The present invention will be described in detail below. FIG. 1 schematically shows the configuration of an embodiment of the present invention.
The same elements as those of the conventional example shown in FIG. In FIG. 1, 1 is a conversion processing unit, 2 is a database search processing unit, 3 is a database, 4 is a display device, 5 is a keyboard, 6 is a display control unit, 7 is date attribute data of documents in the database 3, and 8 is A memory in the database search processing unit 2, 9 is a non-volatile electrically rewritable memory (hereinafter abbreviated as EEPROM), 10 is a year conversion table, 11 is the number of year tables, 12 is year data, and 13 is It is date attribute data.

The structure of the year / year conversion table 10 has year / year data 12 and date / time attribute data 13 corresponding to the year / year data 12 as a pair, and this pair is the number indicated by the year / year table number 11. It is a structure that exists only. In the illustrated example, in the year conversion table 10, the only date attribute data 13 corresponding to "Meiji yymmdd" is DATEID. M, "Taisho
The only date attribute data 13 corresponding to "yymmdd" is DATEID
T, and the only date attribute data 13 for "Showa yymmdd" is DATEID S is the only date attribute data 13 corresponding to "Heisei yymmdd" is DATEID H. each
The yymmdd part indicates the year / month / day indicated by the date attribute data 13. The conversion table 10 may be stored in the EEPROM 9 only once when the search document system is created. In this way, by holding the conversion table 10 in the EEPROM 9, it is possible to add a new year number without changing the main program.

Next, the operation of the above embodiment will be described with reference to FIG. In FIG. 2, 1 is a conversion processing unit, 2
Is a database search processing unit, 3 is a database, 4 is a display device, 5 is a keyboard, and 6 is a display control unit. 10
Is a year conversion table, 11 is the number of year tables, 12 is year data, 13 is date attribute data, 14 is a pointer indicating the current position in the conversion table 10, and 15 is a year using the pointer 14. Year data 12 in conversion table 10
Referring to, the year data comparison unit for comparing this with the input year data, 16 is a date attribute data calculation unit for calculating the date attribute data 13 obtained from the year data comparison unit 15, and 17 is a database. A date attribute data comparison unit for comparing the date attribute data designated by the search processing unit 2 with reference to the date attribute data 13 of the year / year conversion table 10 using the pointer 14, and 18 for the date attribute data comparison unit 1
7 is a year data calculation unit that calculates date attribute data obtained from 7.

Next, an outline of the operation will be described. First, the year data input by the keyboard 5 is given to the year data comparison unit 15. The year data comparison unit 15 sets (initializes) the pointer 14 to the position of “Meiji yymmdd”, compares the year data 12 of the year conversion table 10 indicated by the pointer 14 with the input year data, and Pointer 1 when the input year data is larger than the indicated year data 12
4 is advanced by one, and if the pointer 14 does not exceed the final year table indicated by the year table number 11, the same comparison is made, and if not, the pointer 14 is returned by one. When the input year data is smaller than the year data indicated by the pointer 14, the pointer 14 is returned by 1 if the pointer 14 is not the head of the year conversion table 10. Then, the year conversion table 10 pointed by the pointer 14 which is the source of the calculation of the year data.
The date attribute data calculation unit 16 is activated by the date attribute data 13 and the input year number data.

The date attribute data calculator 16 obtains the date attribute data by calculating the difference between the input year data and the year data 12 indicated by the pointer 14 and adding the difference to the date attribute data 13 indicated by the pointer 14. . The obtained date attribute data is given to the database search processing unit 2 as inquiry information to the database 3, and the date attribute data of the search result is stored in the memory 8. The database search processing unit 2
In order to display the result, the date attribute data of the search result is transferred from the memory 8 to the date attribute data comparison unit 17.

The date attribute data comparison unit 17 uses the pointer 1
4 is set to the position of "Meiji yymmdd" (initialized), and the date attribute data 13 of the year conversion table 10 indicated by the pointer 14 is set.
And the date attribute data from the memory 8 are compared, and when the date attribute data from the memory 8 is larger than the date attribute data 13 indicated by the pointer 14, the pointer 14 is advanced by 1 and the pointer 14 indicates the year number table number 11. If it does not exceed the final year table, the same comparison is made, and if not, the pointer 14 is returned by one. When the date attribute data 13 from the memory 8 is smaller than the date attribute data 13 indicated by the pointer 14, the pointer 14 is returned by 1 if the pointer 14 is not the head of the year conversion table 10. Next, the year / year conversion table 1 indicated by the pointer 14 which is the basis of the calculation of the date attribute data
The year attribute data calculation unit 18 is activated by the date attribute data 13 of 0 and the date attribute data from the memory 8.

In the year data calculation unit 18, the difference between the date attribute data from the memory 8 and the date attribute data 13 indicated by the pointer 14 is calculated, and the difference is added to the year data 12 indicated by the pointer 14 to obtain the year data. To get The display control unit 6 is activated by the obtained year number data, and the year number is displayed on the display device 4.

"Yymmdd" in the year conversion table 10 indicates the beginning of the year, and the model of the year data 12 and the model of the date attribute data 13 are simplified.

Next, the operation for adding a new year number, for example, "new birth" will be described with reference to FIG. Figure 3
"New" without changing the search document system program
It is a block diagram showing the processing when adding the Japanese era. In the figure, 10 is a year conversion table, 11 is the number of year tables, 12 is year data, 13 is date attribute data, 14
Is a pointer indicating the current position in the conversion table, 15
Is a year data comparison unit for comparing with reference to the year data 12 of the year conversion table 10 using the pointer 14.
Reference numeral 19 is a year number update program for updating a new year number with 11 year number tables.

As shown in FIG. 3, the year code updating program 19 sets the year code table number 11 of the year code conversion table 10 to "5", the year code data 12 to "new yymmdd", and the date attribute data 13. DATEID Update to SS. In the block of the date conversion processing method of the embodiment shown in FIG. 2, since the pointer 14 compares only the number of the year table number 11 in the year data comparison unit 15 and the date attribute data comparison unit 17, the year conversion table. There is no problem even if the year is added to 10.

As described above, according to the above-described embodiment, by storing the year code table 10 in the EEPROM 9, it is possible to cope with the addition of a new year code without changing the search document system program.

[0020]

As is apparent from the above description, according to the present invention, the year conversion table referred to when displaying the date attribute of a document and the year input data as the date attribute of the document are used for the retrieval process. Since the year conversion table to be referred to when handing over is held in the same non-volatile rewritable memory, the new year can be easily recognized by the search document system without changing the system program, Maintenance becomes very easy, and the economical efficiency of the system can be greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of a date conversion processing device according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram for explaining the operation of the date conversion processing device in the embodiment of the present invention.

FIG. 3 is a schematic block diagram for explaining a specific operation of the date conversion processing device according to the embodiment of the present invention.

FIG. 4 is a schematic block diagram showing a configuration of a date conversion processing device in a conventional example.

[Explanation of symbols]

 1 conversion processing unit 2 database search processing unit 3 database 4 display device 5 keyboard 6 display control unit 7 document date attribute data 8 memory 9 non-volatile electrically rewritable memory (EEPROM) 10 year conversion table 11 year table number 12 year data 13 Date attribute data 14 Pointer 15 Year data comparison unit 16 Date attribute data calculation unit 17 Date attribute data comparison unit 18 Year data calculation unit 19 Year update program

Claims (1)

[Claims] 1. A year conversion table referenced when displaying a date attribute of a document and a year conversion table referenced when passing input year data as a date attribute of a document to a search process are the same. Date conversion processing device held in the non-volatile rewritable memory of.