JPH06168074A - Common ionput/output device - Google Patents

Abstract

PURPOSE:To provide a common input/output device which judges the logical system of a recording medium and reads/writes data. CONSTITUTION:The device consists of an input/output means including an input part 2, an output part 3 and a work area 7, and of a logical system judgement part 4 judging the logical system of the recording medium, a code system conversion part 5 converting the code of data, a rule information part 6 where necessary rule and information are stored and a control part 1. When the recording medium is inserted, the input part 2 sequentially reads information from the medium management information storage positions of the respective logical system and stores them into a medium information area 73. The logical system judgement part 4 collates the information with medium information 63 in the rule information part 6, searches coincident one and judges the logical system. Thus, the input part 2 stores data into an input area 71 in accordance with an input rule 61. The code system conversion part 5 converts it into the code system of an electronic computer in accordance with a conversion rule 64, and stores it in an output area 72. The output part 3 outputs it to the electronic computer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a common input / output device,
In particular, the present invention relates to a common input / output device that is compatible with recording media having different logical formats.

[0002]

2. Description of the Related Art An input / output device used in a conventional electronic computer writes data in a recording medium in a logical format of an operating system standard used in the electronic computer and reads data in the logical format from the recording medium. It is a thing. When using data in a recording medium other than the standard logical format of the operating system used in the electronic computer with the application program, specify the logical format and use the conversion input / output program provided by the operating system, or A process for determining the logical format used in the recording medium and converting the data code has to be incorporated in the application program.

[0003]

In the above-mentioned conventional input / output device, when data is read / written to / from a recording medium other than the logical format of the operating system standard used in the electronic computer, an internal application program is used. Since the determination of the logical format and the code conversion must be performed as the processing of 1, the scale of the application program becomes large and the burden of development and maintenance of the application program increases.

It is an object of the present invention to provide a common input / output device which determines the logical format of a recording medium and reads / writes data.

[0005]

SUMMARY OF THE INVENTION A common input / output device of the present invention is an input / output device for inputting / outputting data to / from a recording medium. A rule information section that stores various information used for medium management, a logical format determining section that reads the medium management information from the recording medium and determines the logical format of the recording medium by referring to the rule information section, and the logical format determining section Corresponding based on the judgment result of the logical format judgment unit, and the code system conversion unit that performs mutual conversion between the code system used in the operating system of the electronic computer and the code system used in the recording medium based on the judgment result An input / output unit for inputting / outputting data to / from the recording medium according to the input / output rule is provided.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

As shown in FIG. 1, the common input / output device of this embodiment includes an input unit 2 for inputting information from a recording medium and a computer, an output unit 3 for outputting information to the recording medium and a computer. A logical format determination unit 4 that determines the logical format of a recording medium, a code system conversion unit 5 that performs code conversion of data, a rule information unit 6 that stores the rule information required by each of the above units, and work. It is configured to include a working area 7 and a control unit 1 that controls each unit. The rule information section 6 includes an input rule 61 for inputting data from a recording medium, an output rule 62 for outputting data to the recording medium, and a medium necessary for determining the logical format of the recording medium. The information 63 and a conversion rule 64 necessary for converting the data code system are stored. In the working area 7,
Input area 71 for storing data input by the input unit 2
And an output area 7 for storing the data output by the output unit 3.
2 and a medium information area 73 for storing medium management information of the recording medium read by the input unit 2.

The control unit 1 performs the following processing in order to control the operation of the entire apparatus. (1) Call control is passed to the input unit 2, the output unit 3, the logical format determination unit 4, and the code system conversion unit 5 according to the determined procedure. (2) Based on the determination result of the logical format determination unit 4, the storage address of the necessary information in the rule information unit 6 is searched and passed to each relevant unit.

The input unit 2 receives the control from the control unit 1 and performs the following processing. (1) The medium management information of the recording medium is acquired and stored in the medium information area 73. (2) Data is acquired from a recording medium or a computer and stored in the input area 71.

The output unit 3 receives the control from the control unit 1 and performs the following processing. (1) The data stored in the output area 72 is output to a recording medium or a computer.

The logical format determination section 4 receives control from the control section 1 and performs the following processing. (1) The information stored in the medium information area 73 is collated with the medium information 63 of the rule information section 6 to determine the logical format of the recording medium. (2) Send the determination result to the control unit 1.

The code system converter 5 receives control from the controller 1 and performs the following processing. (1) The necessary data conversion information is extracted from the conversion rule 64 using the address of the rule information unit 6 sent from the control unit 1. (2) The code system of the data in the input area 10 is converted using the extracted data conversion information, and is stored in the output area 72.

The rule information section 6 stores the following information. (1) The input rule 61 includes data input information for inputting data from recording media of various logical formats.
It is stored in the format. (2) In the output rule 62, data output information for outputting data to recording media of various logical formats is stored in the format of FIG. (3) The medium information 63 stores information about medium management information in various logical formats in the format shown in FIG. (4) In the conversion rule 64, data conversion information necessary for mutual conversion between the code system of data used in recording media of various logical formats and the code system of the operating system standard of the computer is in the format of FIG. It is stored.

A specific flow of the processing of this embodiment will be described below with reference to FIGS.

First, the case of inputting data from a recording medium having a different logical format from the operating system standard of an electronic computer will be described. As an example, consider a case where the common input / output device connected to the computer of logical format A inputs data a from the recording medium of logical format B shown in FIG.

When the recording medium is inserted, the control unit 1 transfers control to the input unit 2. The input unit 2 reads information from the medium management information storage position of the recording medium of the logical format A, stores the information in the medium information area 73 of the work area 7, and returns the control to the control unit 1. The control unit 1 transfers control to the logical format determination unit 4. The logical format determination unit 4 collates the information stored in the medium information area 73 with the medium information 63 of the rule information unit 6. The medium information 63 stores medium information in various logical formats in the format as shown in FIG. 3, and the storage location, size, and
It contains necessary information such as data management methods. First,
By comparing with the "format A medium information" stored at the head, it is found that the logical format is not A. Here, if there is another logical format in which the storage position of the medium management information is the same as the logical format A, the collation is continued, but if there is no logical format, it returns to the control unit 1 that there is no coincidence. The control unit 1 transfers control to the input unit 2 together with the information on the medium management information storage position of the recording medium of the logical format B. The input unit 2 reads information from the designated position, stores it in the medium information area 73, and returns control to the control unit 1. The control unit 1 transfers control to the logical format determination unit 4, and the logical format determination unit 4 collates with the “medium information of format B” of the medium information 63 to determine that this recording medium is a recording medium of logical format B. The determination is made, the determination result is notified to the control unit 1, and the control is returned.

The control unit 1 refers to an internal table or the like using the determination result of the logical format B, and refers to the address 410 of the "format B data conversion information" in the conversion rule 64 shown in FIG.
0 and the address 1100 of “data input information of format B” in the input rule 61 shown in FIG. 5 are searched and sent to the code system conversion unit 5 and the input unit 2, respectively, and then control is passed to the input unit 2.

The input unit 2 takes out the "format B data input information" from the address 1100 of the input rule 61 passed from the control unit 1, inputs the data a from the recording medium according to this, and stores it in the input area 71. Then, the control is returned to the control unit 1.

Here, the control unit 1 transfers control to the code system conversion unit 5. The code system conversion unit 5 extracts the “format B data conversion information” from the address 4100 of the conversion rule 64 passed from the control unit 1, and uses this to input the area 71 for input.
The code system of the data a stored in the computer is converted into the code system of the operating system standard (logical format A) used in the computer, and the converted data a is stored in the output area 72 to control the control unit. Return to 1. The control unit 1 transfers control to the output unit 3.

The output unit 3 uses the logical format A of the output area 72.
The data a converted into the code system is output to the electronic computer, the control is returned to the control unit 1, and the input of the data a is completed.

Next, the case of outputting data from a computer to a recording medium having a different logical format will be described. As an example, consider a case where data b is output from a computer of logical format A to a recording medium having logical format B.

When the recording medium is inserted, it is first determined that the recording medium is the logical format B, as in the case of the above-mentioned input. When the control unit 1 receives the output instruction from the electronic computer, it refers to the internal table or the like by using the logical format determination result, and codes the address 4100 of the "format B data conversion information" in the conversion rule 64 shown in FIG. After sending the address 2100 of “format B data output information” in the output rule 62 shown in FIG. 6 to the system conversion unit 5,
Control is passed to the input unit 2.

The input unit 2 receives the data b of the logical form A from the electronic computer, stores it in the input area 71, and returns the control to the control unit 1.

Here, the control unit 1 transfers control to the code system conversion unit 5. The code system conversion unit 5 extracts the “format B data conversion information” from the address 4100 of the conversion rule 64 passed from the control unit 1, and uses this to input the area 71 for input.
The code system of the data b stored in is converted from the operating system standard (logical form A) used in the computer to the code system used in the recording medium of the logical form B, and the converted data b is output area 72, and control is returned to the control unit 1. The control unit 1 transfers control to the output unit 3.

The output unit 3 takes out the "data output information of format B" from the address 2100 of the output rule 62 passed from the control unit 1 and converts it into the logical format B stored in the output area 72 in accordance with this. The output data b is output to the recording medium, the control is returned to the control unit 1, and the output of the data b is completed.

[0027]

As described above, the common input / output device of the present invention has the function of judging the logical format of the recording medium to be read / written in the device and performing the code conversion of the data, so that the electronic device The computer can input / output data without being aware of the logical format of the recording medium.
Therefore, there is no need to determine the logical format of the recording medium inside the application program and perform the data code conversion, the application program can be reduced in scale, and the burden on the development and maintenance of the application program can be reduced. .

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of arrangement of medium management information and data of a recording medium.

3 is an explanatory diagram showing a configuration example of medium information in FIG. 1. FIG.

FIG. 4 is an explanatory diagram showing a configuration example of a conversion rule in FIG.

5 is an explanatory diagram showing a configuration example of an input rule in FIG.

FIG. 6 is an explanatory diagram showing a configuration example of an output rule in FIG.

[Explanation of symbols]

 1 Control Part 2 Input Part 3 Output Part 4 Logical Format Judgment Part 5 Code System Conversion Part 6 Rule Information Part 7 Working Area 61 Input Rule 62 Output Rule 63 Media Information 64 Conversion Rule 71 Input Area 72 Output Area 73 Media Information Area

Claims (1)

[Claims] 1. An input / output device for inputting / outputting data to / from a recording medium, which stores rule information for input / output rules for a plurality of types of recording media having different logical formats, a code system, and various information used for medium management. Section, a logical format determining section that reads the medium management information from the recording medium and refers to the rule information section to determine the logical format of the recording medium, and an operating system of the electronic computer based on the determination result of the logical format determining section. A code system conversion unit that performs mutual conversion between the code system used and the code system used on the recording medium,
A common input / output device, comprising: an input / output unit for inputting / outputting data to / from a recording medium according to a corresponding input / output rule based on a determination result of the logical format determination unit.