JPS61151746A - Processing method of data error - Google Patents

Abstract

PURPOSE:To attain flexible corresponding processing for an error of received data by selecting optionally whether the error processing is executed in correspondence to the kind of the error or the error is executed in common for the error of received data in a terminal device. CONSTITUTION:A CPU1 receives data transmitted externally via a communication interface 2 and checks it. If an error is detected in the received data, it is classified depending on the kind of the error, and which kind of error is generated is stored in a memory 3. The CPU1 reads the data, checks it in order, which error is generated is discriminated and the state of plural switches 5, 6, 7 corresponding to the said error is read through a switch interface 4. Then depending on the state of the switch, whether the corresponding special processing is executed or the common processing is executed for all the errors is decided for error processing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an error processing method for data that is transmitted by converting character data into character hood.

[Background of the invention]

There are various methods for handling errors in terminal devices, but the processing for such errors may need to be changed depending on usage conditions, or may all be the same processing. therefore,
It is desirable that error handling can be performed flexibly to suit each usage condition.

As a conventional error handling method of this kind, there is a
As described in Japanese Patent Publication No. 77779, this method classifies errors in one received data □ by error type and makes it difficult to select whether or not to perform processing corresponding to each type of error. However, this method does not take into consideration the case where processing for each type of error is not selected, and it is not possible to respond flexibly, which poses a practical problem.

[Purpose of the invention]

The present invention has been made in view of the problems in the prior art described above, and provides an error processing method that allows flexible response processing so that processing for errors in received data can be arbitrarily selected in a terminal device. There is K.

[Summary of the invention]

A feature of the present invention is that when an error occurs in data received by a terminal device, the error is classified and stored by type, and in error processing, the type of error is determined and the type of error is It is possible to automatically select whether to execute error processing that has been arbitrarily created in advance in response to errors, or to execute common error processing for all errors, using a switching means such as a switch. It is designed so that the processing for each can be selected arbitrarily.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a concrete system configuration diagram, in which 1 is a central control unit (hereinafter referred to as CPU), 2 is a communication interface, 3 is a memory for storing error processing parts, and 4 is a switch interface, which handles various errors. The corresponding switch 5°6.7 is connected. 8 is an interface for connecting with other circuits.

Next, the operation of the system shown in FIG. 1 will be explained with reference to the chart 70 in FIG. First, the CPU 1 receives data transmitted from the outside via the communication interface 2, and checks whether the data is correct. CPU
If an error is detected in the received data during the check in step 1, it is classified by error type (c-bit error, mismatch of erroneous value, etc.), and as shown in Figure 2, it is determined which error occurred. is stored in memory 3.

In other words, in error processing, as shown in the flowchart (k) in Figure 2, the contents of errors upon reception are stored in four categories, the data is read out, and the CPU sequentially records which error has occurred.
Check with 1. Once it has been determined which error has occurred, the CPU 1 sends multiple switches (5161') corresponding to the error through the switch interface 4.
Reads the state of the switch, determines whether to perform special processing corresponding to the error or common processing for all errors based on the state of the switch, and determines the error handling. .

The common process is (1) Request retransmission of data.

(2) Discard the received data without processing it.

(3) Notify the operator that an error has occurred,
Let the operator decide what to do.

etc. are possible.

By making it possible to select whether or not to execute the processing corresponding to each type of error using a switch, there is no need to modify the main body of the error processing program, and you can simply perform the actual error processing. Create the part of memory 5I
Since it is only necessary to write to the IC, additions and corrections can be easily made.

Therefore, even if the terminal is the same, it is extremely easy to add or change error processing due to differences in usage conditions or requests from the terminal user, and it is also possible to easily create a system that performs different error processing for each of 11 devices. It is.

Additionally, you can switch between error processing for each error type and common processing with a single switch after automatically determining the error type. It is also possible to determine whether the system is effective through cut-and-try methods, and it is also possible to make changes while the terminal is in operation, making it possible to create a very flexible system.

〔Effect of the invention〕

As is clear from the above-described embodiments, according to the present invention, when there is a data busy error received at the terminal device,
Since the error processing can be arbitrarily selected as to whether to perform error processing according to the type of error or to perform common processing, it is possible to respond flexibly to errors in received data, and the hardware configuration of the terminal device can be handled flexibly. It also has the advantage of being easily and inexpensively realizable.

[Brief explanation of drawings]

Figure 1 explains the error handling method of the present invention (specific system configuration diagram, Figure 2 is a flowchart. 1...Central control unit, 2...Communication interface, 3...Memory) , 4... Switch interface, 5, 6.7... Switch.

Claims (1)

[Claims] When an error occurs in the data received by the terminal device, the data error processing method selects and executes a processing method according to the content of the error, which checks whether the received data is correct and determines the type of error; The error data is classified according to preset error types, which error has occurred is stored, and based on the stored data, processing corresponding to the error type or common processing is performed. A data error handling method characterized by automatically selecting and executing a data error.