JPH0628419A - Cad system - Google Patents

Abstract

(57) [Summary] [Purpose] When saving drawings, even if multiple terminals update the same drawing at the same time and save operations at any time, the update work on all terminals is reflected in the new drawing file on the host. To provide a CAD system capable of performing. [Structure] Within a plurality of terminals 2, 3, ... Connected to a host 1 via a communication line, input data is received from an input section 4 which is a function of a conventional terminal, and an old drawing is updated to be a new drawing. A drawing updating unit 5, a drawing file storage unit 6 for storing the updated new drawing, a display unit 7 for displaying the drawing, and a communication unit 8 for communicating with the host 1, together with the drawing newly added when the drawing is edited. An additional element storage unit 9 for storing additional elements to be added is provided in the host 1, and a plurality of terminals 2, 3, ... Are newly provided in the host 1 together with the drawing file storage unit 10 and the communication unit 11 which are the functions of the conventional host. A drawing update unit 12 that receives a plurality of additional elements to the same drawing transmitted by ... and updates the old drawing stored in the drawing file storage unit 10 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a CAD system,
In particular, it relates to a CAD system in which a plurality of terminals read from and write to one host computer, respectively.

[0002]

2. Description of the Related Art Conventional CAD systems have been developed which have various forms depending on the intended use, but normally, a system that uses a high-performance workstation and works as an independent system is often used. ing. However, in recent years, even in a CAD system, drawing files are often centrally managed using a network, and a plurality of people can print the same drawing as the device to be designed becomes complicated. The need to share designs is also increasing. Therefore, connect multiple terminals to one host computer (hereinafter referred to as host),
A CAD system that performs design work in parallel is also provided. However, in this case, to update the drawing file on the host, the connected terminals use the function of reading and writing to this host, and send the drawing file data on the terminal to the host as it is. The host that receives the drawing file data does so by replacing this with the old drawing file as a new drawing file.

[0003]

SUMMARY OF THE INVENTION Conventional CAD described above
In the system, even if a plurality of terminals connected to one host have a function of reading and writing to each host, as a method of updating the drawing file on the host, the host receiving the drawing file data This is done by replacing the old drawing file with the new drawing file as it is, so if, for example, the same drawing is read into multiple terminals, updated at the same time, and each save operation is performed at any time, any terminal will be the first. However, there is a problem in that the drawing that has been saved is overwritten by the terminal that has performed the save operation with a delay, and the work of the operator who previously performed the save operation is not reflected in the new drawing file on the host.

An object of the present invention is to reflect the update work in all terminals in a new drawing file on the host even if a plurality of terminals update the same drawing at the same time at the time of saving the drawing and save operation at arbitrary timing. It is to provide a CAD system capable of performing the above.

[0005]

A CAD system according to the present invention is a CAD system in which a plurality of terminals connected to one host computer respectively read from and write to the host computer. An additional element storage unit for storing an additional element to be added to the drawing is added, and the host computer receives the additional element transmitted from the plurality of terminals and adds the new element to the old drawing stored in the drawing file storage unit. By including a drawing file updating unit, the host computer receives at a desired timing a plurality of additional elements generated by updating the same drawing transmitted by the plurality of terminals, and stores them in the drawing file saving unit. By updating the old drawing stored in the drawing updating unit, the update work on any terminal can be performed. It is a configuration to reflect on.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention.

The CAD system of the present invention has a structure in which a plurality of terminals 2, 3, ... Are connected to one host 1 via a communication line, and each of the terminals 2, 3 ,. A drawing updating unit 5 that receives input data from the input unit 4 which is a function of a conventional terminal and updates an old drawing to be a new drawing, a drawing file storage unit 6 that stores the updated new drawing of the drawing updating unit 5, and a drawing. A display unit 7 that displays the drawings stored in the file storage unit 6 and a communication unit 8 that communicates with the host 1.
At the same time, an additional element storage unit 9 for newly storing an additional element to be added to the drawing at the time of editing the drawing is provided.
Along with the drawing file storage unit 10 and the communication unit 11 which are the functions of the conventional host, a plurality of additional elements newly generated by a plurality of terminals 2, 3, ... A drawing updating unit 12 for updating the old drawing stored in the file saving unit 10 is provided.

Next, the main function of each part will be described.

FIG. 2 is an explanatory diagram for explaining the data format stored in the drawing file storage unit and the display state of the drawing.

The drawing file storage unit 6 stores drawing files, and the data format at this time is collectively stored in a tabular format as shown in FIG. The data item at this time includes an element type 21 and a parameter 22. What is written in the element type 21 is a number representing an element, for example, a line is 1, a circle is 2, and a point is 3. The parameter 22 is information necessary for the element represented by the element type 21. For example, in the case of a line, it is the X coordinate of the starting point, the Y coordinate of the starting point, the X coordinate of the ending point, and the Y coordinate of the ending point. ,
In the case of a circle, the X coordinate of the center point, the Y coordinate of the center point,
And radius, and in the case of a point, X coordinate and Y coordinate. For example, if the data of the drawing file is (1, 10, 10, 50, 50) as shown in FIG. 2B, the drawing displayed based on this is FIG. ), Starting from the coordinates (10, 10) (50,
A straight line whose end point is 50) is represented. The drawing update unit 5 adds an element to the drawing file storage unit 6 based on the operator's input. The additional element storage unit 9 stores the additional element based on the operator's input.

The drawing file storage unit 10 is a storage medium for storing a drawing file. The drawing update unit 12 updates the drawing file read from the drawing file storage unit 10 based on the additional element information from the terminals 2, 3, ... And writes and saves it in the drawing file storage unit 10.

Next, the operation will be described.

FIG. 3 is an explanatory diagram for explaining the update state of the drawing file.

In the figure, display screens 31, 32, 33, 3 are shown.
4,35 and drawing files 36,37,38,39,
Additional elements 40, 41 and drawing file 42 on the host,
43 and 44 are displayed. For the description, the names and symbols defined in FIG. 1 are used, and the data state uses the display screen and the drawing file defined in each part of FIG.

First, the operator of the terminal 2 and the terminal 3 instructs the host 1 to read the old drawing, so that the drawing file 42 on the host, which is the old drawing saved in the drawing file saving unit 10, is communicated. It is read into the drawing file storage unit 6 of the terminals 2 and 3 via the units 11 and 8, and the terminals 2 and 3 display the elements as the display screens 31 and 33 on the respective display units 7 based on the data of the drawing files. . When the operator confirms the display element and gives an instruction to update the element from the input unit 4, the drawing update unit 5 causes the drawing file data 3 in the drawing file storage unit 6 to be displayed.
Update 6,38. For example, if a circle is drawn on the terminal 2, (2, 10, 10, 40) is added to the data of the drawing file 37 as additional data. The additional element storage unit 9 stores this as the additional element 40. The display state at this time is shown as a display screen 32. further,
The operator of the terminal 2 repeats the operation of instructing the element update until he is satisfied, and then operates to save the last drawing, so that the additional element 40 stored in the additional element storage unit 9 of the terminal 2 , And is passed to the drawing updating unit 12 via the communication units 8 and 11. The drawing updating unit 12 reads the drawing file 42 as the old drawing from the drawing file saving unit 10 and adds the additional element 40, and then the drawing file saving unit 1
0 as the drawing file 43 on the host. next,
Similarly, if the operator of the terminal 3 draws a line, (1, 10, 10, -30, 50) is added to the data of the drawing file 39 as additional data. The additional element storage unit 9 stores this as the additional element 41.
The display state at this time is shown as a display screen 34. When the operator of the terminal 3 operates to save the updated drawing, the additional element information stored in the additional element storage unit 9 of the terminal 3 is transferred to the drawing updating unit 12 via the communication units 8 and 11. Passed. The drawing update unit 12 reads the drawing file 43 as the old drawing from the drawing file storage unit 10, adds the additional element 41, and then writes it in the drawing file storage unit 10 as the drawing file 44 on the host. A state where this data is displayed is shown as a display screen 35.

[0017]

As described above, according to the present invention, the terminal includes the additional element storage unit for storing the additional element added to the drawing at the time of editing the drawing, and the host computer has the additional element transmitted by a plurality of terminals. By including the drawing file update unit that receives a new drawing and adds it to the old drawing stored in the drawing file storage unit, the host computer can add multiple additions that occur when the same drawing is sent by multiple terminals. By receiving the elements at any timing and updating the old drawings stored in the drawing file saving section with the drawing updating section, multiple terminals can update the same drawing at the same time when saving the drawings. Even if the saving operation is performed, there is an effect that the update work in all terminals can be reflected in the new drawing file on the host.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a data format stored in a drawing file storage unit and a display state of a drawing.

FIG. 3 is an explanatory diagram illustrating an updated state of a drawing file.

[Explanation of symbols]

 1 Host Computer (Host) 2, 3 Terminal 4 Input Section 5, 12 Drawing Update Section 6 Drawing File Storage Section 7 Display Section 8, 11 Communication Section 9 Additional Element Storage Section 10 Drawing File Storage Section 21 Element Type 22 Parameter 31, 32 , 33, 34, 35 Display screen 36, 37, 38, 39 Drawing file 40, 41 Additional elements 42, 43, 44 Drawing file

Claims (1)

[Claims] 1. A CAD system in which a plurality of terminals connected to one host computer respectively read from and write to the host computer, wherein the terminal stores additional elements to be added to the drawing when editing the drawing. By including an element storage unit, the host computer includes a drawing file update unit that receives an additional element transmitted by the plurality of terminals and adds it to the old drawing stored in the drawing file storage unit to make a new drawing, The host computer receives a plurality of additional elements generated by updating the same drawing transmitted by the plurality of terminals at arbitrary timing, and updates the old drawing stored in the drawing file storage unit to update the drawing. The CAD system is characterized in that the updating work on any terminal is reflected in the old drawing by being performed by the department. Mu.