JP2845694B2 - Data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device,
In particular, the present invention relates to a data processing device that processes data input asynchronously from a plurality of externally connected input / output devices and stores the data in a file.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing an example of the configuration of a conventional data processing apparatus of this kind.

[0003] A plurality of external input / output devices 1A to 1N are connected to the conventional data processing device 2A of this type shown in FIG. An input / output unit 21 connected to the devices 1A to 1N;
A data processing command and data output from the input / output devices 1A to 1N connected to the input / output unit 21 are asynchronously processed in accordance with the command, and the result is stored in a data file storage unit 25 described later. Processing execution means 24 for storing the data in a file.

[0004] The data file storage unit 25 has a function of storing data processed by the above-described data processing instruction for each file.

[0005] The data processing instruction includes a device identification code given in advance for each input / output device that has output the data processing instruction, and a file identification code designating a file in which the processed data is to be stored. It also includes designation of entering new data or modifying data already stored.

[0006]

The above-described conventional data processing apparatus corrects a specific data in a specific file from an arbitrary one of the plurality of input / output devices (for example, the input / output device 1A). The designated data processing instruction and necessary data are input, and during processing of data based on this data processing instruction, the same data in the same file as described above is received from another input / output device (for example, input / output device 1B). When a data processing instruction for is input, a data processing instruction input later is made to wait within a processing unit of one step by a predetermined exclusive control process. After the data processing is performed, the processing according to the data processing instruction of the late arrival is performed, but such processing cannot be made to wait over a plurality of steps. Thus, the processing based on the data processing instructions issued from the two input / output devices is performed almost in parallel, and the result of the correction processing based on the data processing performed last is stored in the designated file. Would. In addition, since it is not known between the input / output devices that output the data processing instructions that such data processing is performed substantially in parallel with respect to data in the same file, the above-described plurality of input / output devices are used. There is a disadvantage that the modification of the data performed by the operation is not executed as intended.

An object of the present invention is to invalidate the above-mentioned data processing instruction input later when a data processing instruction for the same file is input from a plurality of input / output devices and execute data processing without error. An object of the present invention is to provide a data processing device that enables the data processing.

[0008]

SUMMARY OF THE INVENTION A data processing apparatus according to the present invention creates data by processing execution means provided internally based on data processing instructions from a plurality of externally connected input / output devices. The data is stored in the corresponding data file storage unit, and the data stored in the data file storage unit is corrected according to the input data processing instruction, and the corrected data is stored in the data file storage unit. In a data processing device for performing processing for storing in a file, when receiving a data processing command and input data including a device identification name of the input / output device and a data file name to be processed, the data is output into the data processing device and the data is processed. An input / output unit that outputs information output from the processing device to the input / output device to the input / output device, A management table storing means for storing a management table in association with each other and the identification code of the device identification code and data files in the operation with the filling output device,
When a data processing command is received from the input / output unit interposed between the input / output unit and the process execution unit, the data processing command is identified and the contents of the operation data file identification codes corresponding to all the device identification codes in the management table are identified. If the operation data file identification code specified by the received data processing instruction is present, information indicating that data processing relating to the specified data file is being executed is output to the input / output unit, and the operation data file identification code is output. If the code does not exist, the data file identification specified by the data processing instruction as the operating file identification code in the management table corresponding to the device identification code corresponding to the input / output device specified by the received data processing instruction A data processing command stored in a code is output to the processing execution means to execute processing of specified data. When the process specified by the data processing execution unit is completed, a process determination execution unit that stores a predetermined non-operation symbol as an operation data file identification code corresponding to the corresponding device identification code in the management table. It is provided with.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a data processing apparatus according to the present invention. FIG. 2 is an explanatory diagram of a configuration of a management table stored in a management table storage means 23 shown in FIG. .

As shown in FIG. 1, in addition to the input / output unit 21, the processing execution unit 24, and the data file storage unit 25 already described with reference to FIG. A process determination execution unit 22 interposed between the process execution units 24, and a management table storage unit 23 connected to the process determination execution unit 22 and storing a management table described later.
And

As shown in FIG. 2, the management table storage means 23 has a plurality of externally connected input / output devices 1A to 1A.
Designated by a data processing command output from any of the above-described input / output devices 1A to 1N in the device identification code individually given to 1N and the data file stored in the data file storage unit. Then, a management table in which the data processing command is associated with the data file identification code assigned to the active data file is stored. An area for storing the device identification code and the operation data file identification code of this data file is created in advance, the device identification code is input and stored in advance from the outside, and the corresponding operation data file identification code is data A predetermined code that does not belong to any data file stored in the file storage unit 25 (for example, 0
00) is stored in advance.

Input / output devices 1A-1
When a data processing instruction designating a file having the file identification code 001 is output from one of the N, for example, the input / output device 1A, this instruction is input from the input / output unit 21 to the processing determination executing means 22 as it is. The data processing instruction is temporarily stored in the processing determination executing means 22 and
This processing determination execution means 22 is a data processing instruction.
The processing determination execution unit 22 refers to the contents of the operation data file identification codes corresponding to all the device identification codes in the management table stored in the management table storage unit 23, and performs the identified data processing. A check is made to see if there is one that matches the data file identification code specified in the instruction.

Here, when the above-mentioned match is found in the management table, for the file specified by the above-mentioned data processing instruction, predetermined information that data processing is being executed is replaced with the above-mentioned data. The input / output device that has output the processing instruction is designated and output to the input / output unit 21, and the subsequent processing is stopped.

This information is sent to the corresponding input / output device via the input / output unit 21 and displayed.

If the data file identification code specified by the data processing instruction does not exist in the management table, the processing determination executing means 22 outputs the management table corresponding to the input / output device which has output the data processing instruction. Performs a process of rewriting the operating data file identification code corresponding to the device identification code in the data file to the data file identification code of the data file specified by the above data processing instruction, and executes the data processing instruction stored so far. The data is output to the means 24, and the processing according to the data processing instruction is executed.

When the processing execution means 24 completes the processing in accordance with the above-mentioned data processing instruction, the processing determination execution means 22 detects the end of this processing, and the corresponding processing in the management table storage means 23 in the management table storage means 23 is performed. The above-mentioned predetermined code, that is, a code that does not correspond to any data file identification code stored in the data file storage unit 25 is written as the operation data file identification code corresponding to the device identification code to be executed.

When the processing execution means 24 is performing processing in accordance with the above-described data processing instruction, the data output from the input / output unit which has output the data processing instruction is processed by the processing execution means 22 via the processing determination execution means 22. Output to the means 24.

As is apparent from the above description, when a data processing instruction designating a specific file is output from any one of the input / output devices 1A to 1N and executed by the data processing device 2. In addition, even if a data processing instruction specifying the same data file that the processing operation is being executed is output from another input / output device among the above input / output devices, the data processing instruction output thereafter is Data processing device 2
Is not accepted, the information to that effect is output to the corresponding input / output device and displayed, thereby indicating that the data processing instruction input by the operator of the input / output device that has output the data processing instruction has not been accepted. This allows the user to know and to re-enter the data processing instruction that was not accepted again later.

[0020]

As described above, the data processing apparatus of the present invention can prevent the same data file from being accessed simultaneously by a plurality of input / output devices, so that desired data input or data input can be prevented. Has the effect that it is possible to execute the correction without error.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a data processing device of the present invention.

FIG. 2 is a management table storage unit 23 shown in FIG.
FIG. 4 is an explanatory diagram showing a configuration of a management table in the table.

FIG. 3 is a block diagram showing an example of this type of conventional data processing device.

[Explanation of symbols]

 2 data processing device 1A to 1N input / output device 21 input / output unit 22 processing determination execution unit 23 management table storage unit 24 processing execution unit 25 data file storage unit

Claims (1)

(57) [Claims] 1. A method according to claim 1, wherein data is created by a processing execution means provided internally based on data processing instructions from a plurality of externally connected input / output devices, and the data is stored in a corresponding data file storage unit. And a data processing device for performing a process of correcting data stored in the data file storage unit in accordance with a processing instruction of input data and storing the corrected data in a corresponding file in the data file storage unit. When receiving a data processing instruction including a device identification name of the input / output device and a data file name to be processed and input data, the data is output to the data processing device and output from the data processing device to the input / output device. Input / output unit that outputs information to the corresponding input / output device, a device identification code of the input / output device, and A management table storing means for storing a management table in which the identification codes of the data files are associated with each other, and a data processing command interposed between the input / output unit and the processing execution unit when a data processing command is received from the input / output unit. If the operation data file identification code specified by the received data processing instruction exists by referring to the contents of the operation data file identification code corresponding to all the device identification codes in the management table, the specified data file Information indicating that the data processing is being executed is output to the input / output unit, and if the operation data file identification code does not exist, it corresponds to the device identification code corresponding to the input / output device specified by the received data processing instruction. The data file identification code specified by the data processing instruction as the operation file identification code in the management table And outputs an input data processing instruction to the processing execution means to execute processing of the specified data. When the processing specified by the data processing execution means ends, the corresponding device identification code in the management table is stored. A processing determination executing means for storing a predetermined symbol indicating non-operation as an operation data file identification code corresponding to the data processing apparatus.