JPH0435790B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a local area network (hereinafter referred to as
This invention relates to a computer graphic processing system that performs graphic processing, design calculations, and text creation using multiple personal computer (hereinafter referred to as PC) file devices connected to a LAN (LAN).

[Technical background of the invention and its problems] In recent years, graphic processing by computers (hereinafter referred to as
As CAD (CAD) has become more widespread, the computers used in CAD systems have also become smaller and smaller, and recently there has been a desire for their use in relatively small-capacity computers called personal computers. On the other hand, the functionality required of CAD systems has also increased, and in addition to improvements in figure processing capabilities such as drawing and figure editing, text creation functions and design calculation functions such as figure dimension calculation are also required.

These two requirements are technically contradictory, and the memory capacity of the CPU of the currently mainstream 16-bit PC (maximum 512kb ~
700kb), it was impossible to implement a workstation with the three functions mentioned above on a single computer, and it had to be subject to various functional limitations.

However, the hardware costs of CAD systems using minicomputer-class computers were much higher than systems using personal computers, making them unsuitable for general use. Moreover,
In a CAD system, a considerable amount of CPU power is required to input and output graphic input/output programs and the necessary graphic data, so even a minicomputer-class computer must incorporate calculation and text creation functions. was difficult. Moreover, in systems using minicomputers,
Since multiple users divide tasks on one CPU of the minicomputer and access one database, work that consumes the CPU and work that does not use the CPU are performed at the same time, so the CPU capacity is not sufficient. There were also drawbacks such as poor responsiveness and poor utilization.

[Purpose of the Invention] The present invention was proposed in order to solve the problems of the prior art as described above. The object of the present invention is to provide a computer graphics processing system that can perform various functions.

[Summary of the Invention] In order to achieve the above object, in the present invention, a plurality of personal computers having various functions such as graphic processing, calculation, text creation, etc. are connected to a LAN, and a graphic processing data file is connected to the LAN. , a command file, and a file device having text data files are connected.

With this configuration, each computer
In addition to making it possible to access file devices via LAN, it also enabled messages to be sent and received between each computer, with the aim of realizing an advanced graphic processing system by integrating the capabilities of each computer. be.

[Embodiments of the Invention] Examples of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a block diagram showing the connections of the devices constituting the system of this embodiment. In the figure, PC1 is a personal computer for graphic processing, PC2 is a personal computer for writing text,
PC3 is a computer for calculation processing. Each of the personal computers PC1-3 is connected to a local area network LAN, and the personal computers PC1-3 can exchange messages with each other via this LAN.

A file device FSV having graphic processing data files, command files, and text data files is connected to the LAN, and this file device FSV
can be accessed by each of the personal computers PC1 to PC3.

Among the personal computers described above, the personal computer PC1 has a graphic creation function, a function of importing a text file in a file device, and a function of importing and executing a drawing command file in a file device. Personal computer PC2 has text file creation function,
It has the function of converting a text file into a format that can be imported into the personal computer PC1 for graphic processing, and the function of filing the text file into a file device. The personal computer PC3 has a function of creating a drawing command file by calculation and a function of filing the drawing command file in a file device.

The operation of the computer graphic processing system of this embodiment having the above-mentioned configuration will be explained with reference to the flowchart shown in FIG.

First, when performing graphic processing, a drawing command is input from the graphic processing personal computer PC1, which is interpreted and executed by the compiler on the CPU of the personal computer PC1, and displayed on the screen. File that data. At this time, to use command data that has already been created, access the file device FSV via the LAN, import the file device data, and process it.

In addition, if calculations are required, the graphic processing computer PC1 can be connected to the calculation computer via LAN.
A calculation request message is sent to PC3, and the calculation computer PC3 reads the calculation condition data of the file device FSV using a pre-created program, calculates the position, dimensions, etc. of the figure, and creates the figure from the calculation results. Create command data (command words that can draw line segments, arcs, etc.) and save it to a file device so that it can be read by the graphic processing computer PC1.
Store in FSV. Then, a message indicating that the calculation has been completed and the name of the file in which the calculation data is stored are sent again to the graphic processing personal computer PC1 via the LAN. Upon receiving the message that the calculation has been completed, the PC 1 retrieves the command data created by the calculation personal computer from the file device FSV, and performs drawing processing based on this command data.

If text data is required, the graphics processing personal computer PC1 sends a text creation request message to the text creation personal computer PC2 via the LAN.
The personal computer PC2 for text creation uses a word processing function to create text, and stores the text data in the file device FSV so that it can be read by the graphic processing personal computer PC1. When you finish creating the text, send a message to that effect and the name of the file containing the data to your graphics processing computer.
Send to 1. The personal computer PC1 for graphic processing is
Upon receiving this message, the text data is read from the file device FSV, and text data such as character size (height, width), character pitch, and line spacing is input, and the text is placed at a predetermined position in the graphic data. Insert.

In addition, the transmission of messages, etc. between each of the personal computers PC1 to PC3 as described above interrupts the progress of the other party's program so that the other party can continue the next operation by performing some kind of confirmation operation. It is done by certain things.

[Effects of the Invention] As shown in the above embodiments, the computer graphics processing system of the present invention connects multiple computers with different functions to a LAN and allows messages and data to be exchanged between the computers. At the same time, each computer is configured to be able to access file devices connected to the LAN, so even though the capacity of the computer itself is small, the system as a whole has the advantage of being able to perform a large number of tasks. In particular, since file devices are connected to the LAN, individual computers can freely access files without being restricted by other computers, while other computers can carry out their own work. Therefore, each computer's CPU
will be used efficiently, making it possible to realize a highly responsive system. Also,
By using a LAN, multiple computers and file devices can be interconnected and integrated, allowing multiple users to simultaneously process graphics using large amounts of data.

[Brief explanation of drawings]

FIG. 1 is a connection diagram showing an embodiment of a computer graphic processing system according to the present invention, and FIG. 2 is a flowchart explaining the operation of the system of FIG. PC1...PC for graphic processing, PC2...PC for writing text, PC3...PC for calculations,
FSV...File device, LAN...Local area network.

Claims (1)

[Claims] 1 a. A first personal computer equipped with a graphic processing and command execution function and a text data input function, a second personal computer equipped with a text data creation function, and a calculation system in a local area network. A third personal computer having a function of creating graphic processing commands is connected. b. Connect a file device having graphic processing data files, command files, and text data files to the local area network, and configure it so that each personal computer can access this file device via the local area network. . c. Each personal computer has a function for sending and receiving messages with other personal computers. A computer graphics processing system having the above configuration features a to c.