JPH0281180A - Circuit diagram processor - Google Patents

Abstract

PURPOSE:To automatically arrange a symbol for completing a drawing by deriving an end point coordinate of a signal line by a coordinate calculating means, and deriving the direction of the signal line by a direction deciding means. CONSTITUTION:A circuit diagram which is being processed is displayed on a graphic display 3, and to this circuit diagram, an arbitrary area on a circuit is designated by a mouse 21 and a track ball 22, and designated area information is sent to a circuit diagram edition processing part 1. A circuit diagram erasing means 11 of the processing part 1 erases the circuit diagram in the designated area. Subsequently, an end point coordinate of a signal line which is cut by a border line of the designated area is derived by an end point coordinate calculating means 12, and also, the direction of the signal line which is cut is derived by a direction deciding means 13. Based on the end coordinate of the signal line and the direction of the signal line which are derived, a terminal symbol generating means 14 generates automatically a terminal symbol. Also, information related to the circuit diagram is stored in a hard disk 41 or a floppy disk 42.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is applied to graphic processing means. In particular, the present invention relates to processing means for the remaining portion of an input circuit diagram.

〔overview〕

The present invention provides a means for adding an external terminal symbol to a signal line symbol erased by erasing a part of a circuit diagram, which includes: adding an external terminal symbol with an output line to a predetermined position;

By automatically positioning the symbol, it is possible to save time and prevent symbols from being omitted.

[Conventional technology]

In the conventional example, when a part of a circuit diagram is removed, external terminals are manually defined for each cut-out signal line on the remaining circuit diagram.

[Problem that the invention seeks to solve]

In such conventional examples, when a part of the circuit diagram is removed, connector symbols or external terminal symbols are defined for the signal lines that remain after being cut out of the original circuit diagram in order to complete the drawing. Since the symbols had to be placed manually each time the symbols were needed, there are drawbacks that it is time-consuming and that symbols may be omitted from placement.

The present invention aims to eliminate such drawbacks and provides a circuit diagram processing device that can automatically arrange symbols to complete a drawing.

[Means for solving problems]

The present invention provides a display means in which point positions on a display screen are determined by an orthogonal coordinate system, and a graphic input that provides pattern information indicating a circuit diagram in which device symbols are connected by signal line symbols parallel to the coordinate axes of the display means. A circuit diagram processing device comprising: an area specifying means for specifying a partial area of a pattern showing a circuit diagram displayed on the display means;
circuit diagram erasing means for erasing the pattern within the area specified by the area specifying means; end point coordinate calculation means for calculating the coordinates of the intersection of the boundary line of the area specified by the area specifying means and the signal line symbol; a direction determining means for determining the direction of a signal line symbol that intersects with the boundary line of the area and the positional relationship between the boundary line and the erased portion of the signal line symbol; Terminal symbol generating means for creating one of the patterns in which a line is added to the right side, left side, upper side, or lower side of the terminal symbol, and arranging the end point of this lead line at the coordinate point determined by the end point coordinate calculating means. It is characterized by:

[Effect]

The circuit diagram being processed is displayed on a graphic display, and any area on the circuit diagram can be specified using the mouse or trackball. The specified area information is sent to the circuit diagram editing processing section, and terminal symbols are automatically generated and displayed on the graphic display. The circuit diagram data in which terminal symbols are automatically generated is saved on a hard disk or floppy disk.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a schematic diagram showing the configuration of this embodiment.

As shown in FIG. 1, this embodiment includes a circuit diagram editing processing section 1, a circuit diagram input section 2 having a mouse 21, a trackball 22, and a keyboard 23, a graphic display 3, a hard disk 41, and a floppy disk. 42, and the circuit diagram editing processing section 1 includes a circuit diagram erasing means 11, an end point coordinate calculating means 12, a direction determining means 3, and a terminal symbol generating means 14. . That is, this embodiment includes a graphic display 3 which is a display means in which the position of a point on a display screen is determined by an orthogonal coordinate system, and a device symbol is connected to this one display means by a signal line symbol parallel to the coordinate axis of this means. a circuit diagram input unit 2 having a figure input means for providing pattern information indicating a circuit diagram displayed on the display means, and an area specifying means for specifying a partial area of a pattern indicating the circuit diagram displayed on the display means; circuit diagram erasing means 11 for erasing patterns in the area specified by the area specifying means; end point coordinate calculating means 12 for calculating the coordinates of the intersection of the boundary line of the area specified by the area specifying means and the signal line symbol; and the boundary source of the area. direction determining means 13 for determining the direction of the signal line symbol intersecting with the boundary line and the positional relationship between the boundary line and the erased portion of the signal line symbol; the right side, left side of the symbol,
A terminal symbol generating means 14 is provided for creating one of the patterns added to the upper side or the lower side and arranging the end point of this lead line at the coordinate point determined by the end point coordinate calculating means 12.

FIG. 3 is a flowchart showing the operation of this embodiment. First, the operation of this embodiment will be explained based on FIGS. 1 to 3.

When a desired erasing area of the circuit diagram on the graphic display 3 is designated with the mouse 21 or the trackball 22 (step S1), the circuit diagram erasing means 11 erases the circuit diagram within this designated area (step S2). . Subsequently, the end point coordinate calculating means 12 calculates the end point coordinates of the signal line cut at the boundary line of the specified area (step S3), and the direction determining means 13 calculates the direction of the cut signal line (step 34). The terminal symbol generating means 14 automatically generates a terminal symbol on the circuit diagram based on the determined end point coordinates of the signal line and the direction of the signal line (step S5).

Information regarding this circuit diagram is stored in a hard disk 41 or a floppy disk 42.

That is, in the example display screen shown in FIG.
A signal line 31a that intersects with an arbitrary region 30 indicated by
The example display screen in FIG. 5 shows a state in which the inside of region 30 is removed when 31b and 31C are present. The end points 32a, 32b and 32C of the signal line are the signal line 31a.
, 31b and 31C are the points that intersect with the outside of the region 30, and are the points that are disconnected because the region 30 is removed and are not connected anywhere. The end points 32a, 132b and 32C are incomplete as a circuit diagram, and logic verification (logic simulation, etc.) and implementation design (placement, wiring, etc.)
Unable to pass correct data when One way to remove imperfections without changing the meaning (logic) of the circuit diagram is to make them appear when the circuits in area 30 are expressed or realized by other means (for example, macro or LSI). Replace with symbol. An example of a display screen in FIG. 6 shows a state in which the area 30 is replaced with a symbol 33 using this method.

Another method is to define the end points 32a, 32b, and 32c as terminal symbols. This embodiment uses a method of removing imperfections in the circuit diagram by converting it into terminal symbols.

FIG. 7 shows an area 30 and a signal line 31a1 that intersects the area 30.
31b and 31C are enlarged and displayed.

Respective signal lines 31a and 31b that intersect with the region 30
and line segments 31c to 34a, 34b and 34c
The end point coordinates of (Xli, y-th) and (X21, yz+
) (where i=a, b, c), line segment 34a
, 34b and 34C intersect with the outside of the region 30 (X31syst) (where i=a, b
, c), it is sufficient to generate a terminal symbol at the point (X31, X31) when the circuit in the area 30 is removed.

There are types of terminal symbols shown in FIG.

Terminal symbol b is terminal symbol a rotated 90 degrees counterclockwise, and terminal symbol C is terminal symbol b.
is rotated 90° counterclockwise. Similarly, terminal symbol d is obtained by rotating terminal symbol C by 90° counterclockwise. If the terminal symbol d is further rotated 90 degrees counterclockwise, it becomes the same symbol as the terminal symbol a.

When generating a terminal symbol, mark the tip of the lead wire with a point (
X31Sy3t) and line segments 34a, 34b
Terminal symbols a, b, c, and d are used depending on the direction of 34c and 34c. That is, y11=y31 When Xli>X31, use the terminal symbol 19c, and y+t=yst
When ll<x3i, use terminal symbol 19a,
When X = X31 and y = X31, use terminal symbol 19d and set x = x31.
31, the terminal symbol 19b is used.

In this way, terminal symbols for the end points 32a, 32b, and 32c of the signal line are generated to coincide with the direction of the signal line. FIG. 9 shows the results of automatic generation of terminal symbols.

〔Effect of the invention〕

As described above, the present invention automatically generates terminal symbols and eliminates imperfections when a portion is cut out from a circuit diagram, thereby reducing work time and improving work efficiency. Further, even if there is a circuit whose logic is difficult to verify in the circuit diagram, there is an effect that the difficult-to-verify circuit can be removed and the remaining circuit can be easily verified.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention. FIG. 2 is a configuration diagram of the circuit diagram editing processing section shown in FIG. 1. FIG. 3 is a flowchart showing the operating procedure of the embodiment of the present invention. FIG. 4, FIG. 5, FIG. 6, and FIG. 9 are examples of display screens of the circuit diagram processing device. Figure 7 is a partially enlarged view of Figure 3. FIG. 8 is a diagram showing types of terminal symbols. 1... Circuit diagram editing processing section, 2... Circuit diagram input section, 3
...Graphic display, 4...Storage section, 1
DESCRIPTION OF SYMBOLS 1... Circuit diagram erasing means, 12... End point coordinate calculation means, 13... Direction determination means, 14... Symbol generation means.

Claims (1)

[Claims] 1. Display means in which point positions on a display screen are determined by an orthogonal coordinate system, and pattern information showing a circuit diagram in which device symbols are connected to this display means by signal line symbols parallel to the coordinate axes of this means. In the circuit diagram processing apparatus, the circuit diagram processing apparatus is equipped with a graphic input means for inputting a pattern, and an area specifying means for specifying a partial area of a pattern representing a circuit diagram displayed on the display means, and a pattern within the area specified by the area specifying means. circuit diagram erasing means to be erased; end point coordinate calculation means for calculating the coordinates of the intersection of the boundary line of the area specified by the area specifying means and the signal line symbol; and the direction of the signal line symbol intersecting the boundary line of the area. and a direction determining means for determining the positional relationship between this boundary line and the erased portion of this signal line symbol, and based on the determination result of this direction determining means, whether the lead line is to the right, left, above, or below the terminal symbol. 1. A circuit diagram processing device comprising terminal symbol generating means for creating one of the patterns added to the terminal symbol and arranging the end point of the lead line at the coordinate point determined by the end point coordinate calculation means.