JPH04149783A - Circuit diagram editor - Google Patents

Abstract

PURPOSE:To speed up the input of a circuit diagram by selecting the start and end points of a connection line after arranging symbols and executing automatic wiring. CONSTITUTION:A user starts plotting by means of a circuit diagram forming tool 103, accesses symbols registered in a cymbol library 102 and arranges the accessed symbols on a screen. In the case of arranging the symbols by means of the tool 103 and drawing a connection line, the start and end points of the connection line are selected in a state almost completing the arrangement of the symbols and the two selected points are stored in a pin pair information storing means 104 as pin pair information. In each arrangement of a symbol, an arranging area is additionally stored in a wiring inhibition area storing means 105. Thus, an automatic wiring means 106 mutually connects the start and end points by a rectangularly bent continuous line based on the obtained pin pair information and the wiring inhibition area. Consequently, a time required for wiring can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a circuit diagram editor for an electrical computer design aid (CAD) system, and particularly to its wiring means.

[Conventional technology]

Traditionally, when wiring, this type of circuit diagram editor
I consider the position of the symbols and the overall balance, decide where to bend the wires at right angles, and wire each wire one by one using a device such as a tablet or mouse.

[Problem to be solved by the invention]

-1- As mentioned above, with conventional circuit diagram editors, when wiring, you have to consider the position of symbols and overall balance, and decide where to bend the lines at right angles.
Since the wires are wired one by one using a device such as a computer or a mouse, there is a drawback that it takes time to wire the wires one by one, and it is necessary to make corrections again after the wires are completed.

[Means to solve the problem]

The circuit diagram editor of the present invention is an electrical CAD system, and includes a symbol creation/editing tool for creating symbols such as logic elements, and a symbol library for storing symbols created with the symbol creation/editing tool. , a schematic creation tool that places symbols from the symbol library on both sides and draws connection lines, and a tool that allows you to move and move symbols and connection lines on the screen.
In a circuit diagram editor that has a circuit diagram editing tool that performs copying and deletion, and a plotter drawing tool that outputs drawing data drawn with the circuit diagram editing tool, the function of drawing connection lines of the circuit diagram creation tool is changed to the connection line. pin pair information storage means that sequentially selects only two points, a start point and an end point, and stores the two points as pin pair information and I; and wiring prohibited area storage means that stores a wiring prohibited area F in which the symbol is arranged. and an automatic wiring means that avoids the wiring prohibited area stored in the wiring prohibited area storage means and connects the start point and the end point with a continuous straight line bent at right angles according to the pin pair information stored in the pin pair information storage means. are doing.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of a circuit diagram editor according to an embodiment of the present invention.
FIG. 2 is a diagram showing which two points have been selected as pin pair information, and FIG. 3 is a diagram showing the results of automatic wiring.

In FIG. 1, the circuit diagram editor of this embodiment includes a symbol creation/editing tool 1-o], a symbol library 1
02, Circuit diagram creation tool 103, Circuit diagram editing tool 10
7. Consists of a plotter drawing tool 108.

Further, the circuit diagram creation tool 103 is composed of a pin pair information storage means 104, a wiring prohibited area storage means 1.5, and an automatic wiring means ]-06.

Next, the operation will be explained below.

First, the user starts drawing using the circuit diagram creation tool 103, calls up symbols registered in the symbol library 102, and places them 1 iL on the screen. At this time, if a game arises where you want to use a symbol that is not registered in the symbol library 102,
Create a symbol Create a symbol using the editing tool 101 and register it in the symbol library].02.

Next, using the circuit diagram creation tool 103, symbols are placed and connection lines are drawn. When drawing a connection line, select the start and end points of the connection line after the symbols have been placed to some extent, set the selected two points as pin pair information,
and stored in the pin pair information storage means 104. Then, using this pin pair information storage means 104, pin pair information between symbols currently drawn on the screen is sequentially stored.

Furthermore, each time a symbol is placed, the area to be placed is added and stored in the wiring prohibited area storage means 105, and the automatic wiring means 106 is used based on the pin pair information and wiring prohibited area obtained in this way. , connects the starting point and ending point with a continuous straight line that bends at right angles.

Automatically generate connection lines by following the steps below.

Further, the circuit diagram editing tool 107 is used to move, copy, delete, etc. symbols and connection lines. A circuit diagram is created in this way, and the drawing data is printed using the plotter drawing tool 108.

Here, FIG. 2 shows the starting point and the ending point on the screen so that it can be seen which two points have been selected as a pin pair when the pin pair information storage means 104 is used to store information on the starting point and ending point of the connection line. The end points are displayed with a single straight line.

Further, FIG. 3 shows the result of wiring using the automatic wiring means 106 based on the pin pair information shown in FIG.

〔Effect of the invention〕

As explained above, according to the present invention, after symbol placement,
Since we decided to perform automatic wiring by selecting the start and end points of the connection lines, we no longer have to manually create new wiring each time, which has the effect of speeding up the input of circuit diagrams. be.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a circuit diagram editor according to an embodiment of the present invention.
FIG. 2 is a diagram showing which two points have been selected as pin pair information, and FIG. 3 is a diagram showing the results of automatic wiring. 101...Symbol creation/editing tool, 102...
symbol library, 103... circuit diagram creation tool, 104... pin pair information storage means, 105... wiring prohibited area storage means, 106... automatic wiring means, 10
7... Circuit diagram editing tool, 108... Plotter drawing tool.

Claims (1)

[Scope of Claims] An electrical computer design support system, comprising: a symbol creation/editing tool for creating symbols such as logic elements, and a symbol library that stores the symbols created by the symbol creation/editing tool; A circuit diagram creation tool that places symbols from the symbol library on the screen and draws connection lines, a circuit diagram editing tool that moves, copies, and deletes the symbols and connection lines on the screen, and a circuit diagram editing tool that is used to create a drawing. In a circuit diagram editor that has a plotter drawing tool that outputs drawn drawing data, the connection line drawing function of the circuit diagram creation tool sequentially selects only two points, the start point and the end point, of the connection line, and pin pair information storage means for storing as pin pair information; wiring prohibited area storage means for storing a wiring prohibited area in which the symbol is arranged; and automatic wiring means for connecting a start point and an end point with continuous straight lines bent at right angles according to the pin pair information stored in the pin pair information storage means.