JPS6260335A - Decentralized terminal equipment processing system - Google Patents

Abstract

PURPOSE:To improve the expanding performance and response by allowing a terminal processing equipment to decide independently the result (information) processed by a central processing unit flowing onto a loop transmission line and acquire it. CONSTITUTION:The information generated from a plant or other computer is processed by the central processing unit 1, an information discriminating code is added to the result (information) and the result is outputted onto a loop transmission line 4. The information outputted on the transmission line is received by terminal processing equipments 5-1-5-n. An information collection section 11 selects or abolishes the information required for its own terminal equipments (CRT6-1-6-n, T/W7-1-7-n or the like) from the received information by deciding an information discriminating code, the said required information is collected from the said received information and stored in an information storage section 12. When the information is requested from a terminal equipment (CRT, T/W), an information edition processing section 13 analyzes the requested information, the information to the said request information is collected from the information storage section 12, edited and outputted to a terminal equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a processing method of a terminal processing device in a distributed computer system, and more particularly to a terminal processing method that provides high independence, expandability, and responsiveness of the terminal processing device.

[Background of the invention]

In systems using conventional loop transmission paths, each terminal device is directly controlled by the central processing unit, resulting in low responsiveness.As the number of terminal devices increases, the load on the central processing unit increases, and the load on the transmission path also increases. increase Furthermore, when adding more terminals, it was also necessary to change the software on the central processing unit side.

Incidentally, related technologies include, for example, Japanese Unexamined Patent Application Publication No. 1986-72.
There is No. 50.

[Purpose of the invention]

The purpose of the present invention was conceived to eliminate the above-mentioned weaknesses, and by accumulating unique information on the terminal processing device side separately from the information accumulation in the central processing unit, the independence of the terminal processing device is increased and the distributed system The objective is to provide a processing method suitable for computer systems.

[Summary of the invention]

Conventionally, information was provided through complex information exchange between a central processing unit and a terminal processing unit, but the present invention provides information that is processed by the central processing unit and transmitted on a loop transmission path.
Since the terminal processing device independently determines and acquires information, the central processing unit does not need to be aware of the terminal processing device, so it can easily cope with the addition of terminal processing devices, and it can easily respond to information requests from terminals. Since information can be provided using only a terminal processing device, it is possible to provide high scalability and responsiveness using a high-performance method.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment, and FIG. 2 is a block diagram of the inside of a terminal processing device.

In Fig. 1, 1 is a central processing unit, 2 is another system computer, 3 is a plant (equipment), 4 is a loop transmission line (broadcast, cast transmission line), 5-1゜5-2...5-n
is a terminal processing device, 6-1.6-2-6-n is a CRT device, and 7-1-7-n is a T/W device. In this configuration, the central processing unit processes information generated in the plant or other computers, adds an information identification code to the result (information), and outputs the result (information) onto the loop transmission line. The information structure at this time is shown in FIG. Each terminal processing device receives the information output on the transmission path. Next, one terminal processing device will be explained as an example. In FIG. 2, 11 is an information gathering section, and 12 is an information storage section.

13 is an information editing department. The received information is collected by the information collection unit, which selects information necessary for the own terminal (CRT, T/W, etc.) by determining the information identification code, collects the necessary information from the received information, and stores it in the information storage unit. Accumulate in. The processing flow at this time is shown in FIG. Therefore, the central processing unit simply outputs the processing result (information) to the loop transmission path without being aware of the existence of the terminal processing unit.

Next, when there is a request for information from a terminal device (CRT, T/W), the information editing processing section analyzes the requested information, collects information corresponding to the requested information from the information storage section, edits it, and sends it to the terminal device. The processing flow at this time is shown in FIG.

[Effects of the Invention] As described above, according to the present invention, the central processing unit only sends the results of the processing to the loop transmission path without being aware of the terminal processing device, and the terminal processing device only sends the results of the processing to the loop transmission path. It is highly expandable because you only need to focus on the information, and therefore it can easily handle the addition of terminal processing equipment.Also, it is possible to respond to information requests from terminal equipment because it can be handled only by terminal processing. It is also highly sexual.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a block diagram inside a terminal processing device, Fig. 3 is a configuration diagram of a transmission format on a loop transmission path, and Fig. 4 is an information gathering section inside the terminal processing device. FIG. 5 is a processing flow diagram of the information editing section in the terminal processing device. 1...Central processing unit, 2...Other system computers, 3
...Plant, 4...Loop transmission line, 5-1.5-
2...5-n...Terminal processing device, 6-1.6-2.
・・6-n・CRT device, 7-1 , 7-2 ・=
7-n-T/W device, 11... information collection section,
12... Information storage section, 13... Information gathering section.

Claims (1)

[Claims] 1. In a distributed computer system in which a central processing unit and multiple terminal processing units are connected through a loop transmission line, by outputting the results (information) processed by the central processing unit to each terminal processing unit through the loop transmission line. Each terminal processing device independently selects the information it needs and stores the selected information within the terminal processing device.
A distributed terminal processing method characterized by making it easy for terminal processing devices to independently provide information requested by each terminal device without relying on a central processing unit.