JPS6080343A - Error information supervising system - Google Patents

Abstract

PURPOSE:To decrease a waiting time of a terminal device by allowing each terminal device to check an error in input information and transmit effective information only to a host device on reference information for error discrimination transmitted from the host device to the terminal device to decrease a load of the host device. CONSTITUTION:A multiplexer 200 receives reference information for error check of an input data from the host device 300 and stores it in a memory 202. The reference information of the memory 202 is transferred to each terminal device 100i by a communication line Li and stored in an RAM of each terminal device 100i. Data is inputted to each terminal device 100i from an input section properly and the error check of the input data is performed by the reference information in the RAM. When no error exists, the input data is transmitted from the terminal device 100i to a communication line Li.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a data processing system including a plurality of terminal devices and a host computer. The present invention relates to an error information monitoring system for monitoring.

Prior Art In conventional error information monitoring systems, all error checking of information input from a terminal device is performed on the host computer side.

FIG. 1 shows an example of a conventional system. In this figure, a host computer 10 includes a multiplexer device (hereinafter simply referred to as l-MPXJ) 12 and a plurality of terminal devices 14A, 14B, 14 via communication lines.
C, . . . 14N are connected. Host computer 10 C, multiple terminal devices 14x via MPX 12
(x is A.

B, C,...N).

That is, data input from the terminal device 14x is sent to the host converter 1 via the communication line and the MPX 12.
0, and here it is determined whether there is an error in the input data. If there is an error in this input data or the input data is invalid, information to that effect is sent to the terminal device 14.
transmitted to x. For example, when data is input from the terminal device 14x using a predetermined magnetic card, the information "This magnetic card cannot be used" is displayed on the terminal device 14x.
It is as if it were transmitted to

In this way, the data input from the terminal device 14x is
The presence or absence of an error is determined for the first time when the input data is transmitted to the host copier IO, and this fact is transmitted to the terminal device 14x using idle time on the communication line.

However, in such a system, when data is inputted to the host computer IO from a large number of terminal devices 14x almost simultaneously, the MPX 12
4x is selected sequentially and processed by the host computer/computer 10. Because the traffic and processing load are temporarily concentrated,
If the input data is input relatively late, the terminal device will be in a waiting state for a long time because it takes time to check the error, and the service quality will deteriorate.

Furthermore, in order to improve serviceability, the number of terminal devices 14X that can be installed must be limited to such an extent that such load concentration cannot occur, which is also economically disadvantageous. .

1. The present invention has been made in view of the above points, and 21 aims to reduce the load on the host machine, and also prevents the waiting time from increasing even if the number of installed terminal devices is increased, leading to a decrease in serviceability. The purpose is to provide an error information monitoring system that is free of errors.

Configuration The present invention will be described below based on one embodiment. Second
The figure shows an embodiment of the error information monitoring system according to the present invention. In this figure, a plurality of terminal devices 100A and 100B.

100C, -100N are communication ports mLA, LB
.

LC, . . . LN are connected to the MPX 200, respectively. Furthermore, the MPX 200 is connected to the host converter 300 via a communication line LIN.

In FIG. 3, a terminal device 100x (x is A, B.

C, D, . . . N) - A configuration example is shown. In this figure, the terminal device 100x includes a central processing unit (hereinafter simply referred to as rCPIJJ) 102, and the CPU 102 includes an error display section 104.
．． Input section 1o6. Read-only memory (r R
OM J) ios.

A read/write memory (hereinafter simply referred to as l'-RAM J) 110 and a communicator element 112 are connected to each other.

The input unit 106 is an information input means, and information is input using, for example, a magnetic card or a keyboard. When the data input from the human power unit 106 contains an error, the CPU 102 detects this error as described later, and the error display unit 104 displays this fact.

Next, the ROM 108 stores programs for controlling the entire terminal device, and according to this,
CPU 102 operates. The RAM 110 appropriately stores necessary data, such as data input from the input unit 106 or data transmitted from the host computer 300, and is also used as a work area necessary for processing by the CPU 102.

The communicator element 112 is connected to the communication line LX, and is a line interface section through which data is exchanged between the host computer 300 and the terminal device 100x.

Next, the MPX 200 also has a CPU 204 and is also provided with a memory 202 (FIG. 2). The memory 202 temporarily stores data transmitted from the host computer 300 and each terminal device 100X, and stores data transmitted from the host computer 300 and each terminal device 100X.
PU204 transfers these to each terminal device 100X and host computer 300, respectively.

Note that the host computer 300 may include a C
This is a processing system that is appropriately provided with necessary data input/output devices such as an RT device 302, a storage device, and the like.

Next, the overall operation of the above embodiment will be explained. First, error information is transmitted from the host computer 300 to the MPX 202 when the entire system is started. This operation is performed based on the request of MPX 202. Error information is reference information necessary for determining whether or not data input from the input unit 106 of the terminal device 100X contains an error. This error information also includes information necessary for determining whether input data is valid or invalid, for example.

The error information is transmitted from the host computer 300 to the MPX 200 upon request from the MPX'200;
It is stored in memory 202. In this case,
If the memory 202 is configured as a non-volatile memory, error information will be saved even in the event of a power outage, so there will be no need for the host combination 300 to transmit the error information again when the accident is restored, and the error information described later will be saved. Information can be transferred to a terminal device.

Next, the error information stored in the memory 202 is transferred to each terminal device 100x via the communication line Lx. The transferred error information is stored in RAM1 of each terminal device 100X.
In each terminal device 100X, data is inputted from the input unit 106 using a magnetic card or the like as appropriate.

The CPU 102 determines whether this input data contains an error or is valid. This determination is made based on the error information stored in RAMll0.

If it is determined that an error is included, a signal is output from the CPU 102 to the error display section 104, and this fact is displayed on the error display section 104. Ichiyo Ozeshi, who is inputting data, will take necessary measures such as re-entering the data in response to this error display.

Next, if there is no error in the input data, the communicator element 112 is driven, and the communication line Lx
Input data is transmitted to PX 200. MPX 20
0, data from each terminal device 100x is multiplexed and transferred to the host computer 300.

Effects As explained above, according to the error information monitoring system according to the present invention, error information necessary for determining whether an error is included in input data is stored in each terminal device, and error checking is performed at each terminal device. This shall be done on the terminal device,
Only valid data is transferred to the host side.

Therefore, the load on the host machine is reduced, and the number of terminal devices installed is not limited.

Furthermore, since communication lines can be effectively utilized and processing waiting time can be shortened, there is an effect that serviceability can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of a conventional error information monitoring system, FIG. 2 is a block diagram showing an embodiment of the error information monitoring system according to the present invention, and FIG. 3 is a detailed diagram of the terminal device shown in FIG. 2. FIG. 2 is a block diagram showing an example of a configuration. Explanation of symbols of main parts 100A, 100B, 100C...100N, 100
x...Terminal device 106...Input section 110...RAM 200 -Multiplexer device 202 -Memory 300...Host computer Patent applicant Ricoh Co., Ltd.

Claims (1)

[Scope of Claims] ] In an error information monitoring system in which a plurality of terminal devices and a host device are connected via a communication means, and errors in input data inputted from each terminal device are checked, 1 memory, and the communication means includes an error check for input data. request the host machine for reference information that serves as a reference for the process, receive the reference information from the host machine and transfer it to each terminal device, and each terminal device stores the reference information in a first memory; An error information monitoring system characterized in that an error check is performed on the input data based on the reference information. 2. The system according to claim 1, wherein the communication means has a second memory, and the reference information is stored in the second memory.
An error information monitoring system characterized in that the error information is accumulated in the memory of the computer.