JPS63292270A - Layout system for inter-drawing connection information on logic circuit diagram - Google Patents

Abstract

PURPOSE:To solve such problems where a wiring route is closed due to the complication of inter-drawing connection information or a drawing is not easily read, by arranging the inter-drawing connection information at the output side where the complication is easily produced in particular with proper blank spaces secured in accordance with the state of said complication. CONSTITUTION:The information whose size is larger than the size of an element frame and continuous in the direction of said frame size is arranged with preference and alternate shifts given inside and outside every field of a single element frame among those inter-drawing connection information on the output side. While other information is arranged with preference at the most outside adjacent position where these information can be connected with the elements to be connected on a straight line. Thus it is possible to reduce the complication in terms of the layout of the inter-drawing connection information in order to avoid the closure of a wiring route. In such a way, a logic circuit diagram which can be easily read is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for arranging inter-drawing connection information used in a CAD system for logic circuits.

2. Description of the Related Art In logic circuit CAD performed using a conventional electronic computer system, automatic logic design of a digital processing device is performed, and as a result, drawing information of a logic circuit diagram is created. This drawing information includes element information within the logic circuit diagram and connection information within and between drawings. This inter-drawing and intra-drawing connection information includes the position within the drawing of the element to be connected, the terminal number, and the like.

According to the conventional arrangement method of inter-drawing connection information, as illustrated in FIG. 10, the inter-drawing connection information marked with diagonal lines and lowercase letters is the shortest position of the connected elements marked with uppercase letters. It is designed to be placed in

Problems to be Solved by the Invention In the above-mentioned conventional method for arranging branch information between drawings, these are simply arranged at the shortest positions of the connected elements.
Connection routes may be blocked due to confusion in drawing indirect branch information,
There are problems such as making it difficult to read.

Means for Solving the Problems The method of arranging the drawing-direction branch information of the logic circuit diagram according to the present invention is such that the drawing-direction branch information on the input side is arranged such that one element and one element to be connected are connected.
For those that have a one-to-one relationship, they are placed preferentially in a position where they can be connected in a straight line to this element and there is an empty space for one element frame field between them, and one pair is placed with the element to be connected. Those having a plurality of relationships are arranged preferentially at a position where they can be connected to the outermost element on a straight line and have an empty space of one element frame field between them.

Also, among the drawing-to-drawing branch information on the output side, those whose size is greater than or equal to the element frame size and are continuous in the direction of this size are alternately shifted inward and outward by one element frame field in the direction of this size. while placing priority on
By preferentially arranging other items at the outermost adjacent position where they can be connected in a straight line with the element to be connected, the confusion in the arrangement of indirect branch information in the drawing can be reduced, and the blockage of the wiring route can be avoided. It is configured to create an easily readable logic circuit diagram.

Hereinafter, the operation of the present invention will be explained in detail together with examples.

Embodiment FIG. 1 is a block diagram showing the configuration of a CAD system to which an embodiment of the present invention is applied, in which 1 is a main storage device, 2 is a processing device, 3 is an automatic drawing input device, 4 is a terminal device, 5 is an external storage file, and 6 is a drawing output device such as a printer.

In addition to storage areas for various processing programs executed by the processing device 2, the main storage device 1 includes a drawing information storage area 11, a generated drawing name information storage area 12, an element information storage area 13, and an intra-drawing connection information storage area. 14, a drawing branch information storage area 15, and a logic circuit diagram image storage area 16.

FIG. 2 is a flowchart showing the flow of the logic circuit diagram image creation process executed by the processing device 2 of FIG.

The arrangement process of drawing indirect branch information according to an embodiment of the present invention is included as steps 27 and 28 in the above flowchart, and detailed contents of these steps are shown in the flowcharts of FIGS. 3 and 4, respectively. It is shown.

First, referring to the flowchart in FIG. 2, when drawing information is input manually from the automatic drawing input device 3 or terminal device 4, the processing device 2 converts the input drawing information into element information and connection information in the first step 21. The data is stored in the external storage file 5 while being separated into two parts. The processing device 2 specifies the generation screen name input from the terminal device 4 in step 2.
When received in step 2, the process proceeds to step 23, where the drawing information of the designated page is extracted from the external storage file 5, and the element information,
Storage area 1 for drawing connection information and drawing indirect branch information
3 to 15.

In the next step 24, the element information in the element information storage area 13 is expanded into the logic circuit diagram image storage area 16 as an image of an element frame. In step 25, drawing indirect branch information is extracted from the drawing indirect branch information storage area 15, and in step 26 it is checked whether the extracted drawing indirect branch information is from the input side or the output side. . If the extracted drawing indirect branch information is on the input side, an input side placement process is performed in step 27, and if it is on an output side, an output side placement process is performed in step 28.

FIG. 3 is a flowchart showing the procedure of the input side placement process executed in step 27 of FIG.

In the first step 31, it is checked whether there is a one-to-one correspondence between the drawing indirect branch information and the number of elements to be connected, and if there is a one-to-one correspondence, the arrangement processing proceeds to step 32. In step 32, as illustrated in FIG. 5, the inter-drawing branch information f is placed on the left side where it can be connected horizontally to the element Fl to be connected and where an empty space for one element frame field can be interposed between the element and this element. are placed preferentially. Furthermore, the fifth
As illustrated in the lower right of the figure, if the above priority position is already occupied by other information, an empty space is searched for one line above and below the other, centering on this position, and the drawing is connected to such an empty space. Information is placed.

On the other hand, if it is detected in step 31 of FIG. 3 that there is a one-to-many relationship between the drawing-direction branch information and the elements to be connected, the input-side arrangement processing proceeds to step 33. Step 3
3, as illustrated in FIG. 6, it is possible to connect horizontally to the element A1, which has the largest height in the drawing among the three elements AI, Bl, and C1 to be connected, and there is one element frame between them. The inter-drawing branch information f is preferentially arranged on the left side with an empty space for the field interposed therebetween.

FIG. 4 is a flowchart showing the procedure for arranging inter-drawing branch information on the output side, which is executed in step 28 of FIG.

In the first step 41, it is checked whether the drawing indirect branch information output from one element is equal to or larger than the element frame size, and if not, the arrangement processing proceeds to step 42. On the other hand, if the drawing indirect branch information output from the l element is equal to or larger than the element frame size, it is checked in step 43 whether the above conditions are continuously satisfied in the vertical direction, and if not, the arrangement is performed. Processing continues to step 42 described above. In step 42, as illustrated in FIG. 7, each piece of inter-drawing branch information is preferentially arranged at an adjacent position on the right side where it can be horizontally connected to the element to be connected.

On the other hand, if it is determined in step 43 that the drawing indirect branch information output from one element is equal to or larger than the element frame size and that this condition is continuously satisfied in the vertical direction, the arrangement process proceeds to step 44. In step 44, as illustrated in FIG. 8, the inter-drawing branch information is alternately shifted to the left and right by one element frame in the height direction, and is preferentially placed at the right position.

When the above-mentioned placement process of inter-drawing branch information on the input side or output side is completed in step 27 or step 28 of FIG. 2 explained in FIG. 3 and FIG. It is determined whether or not one page's worth of processing has been completed, and if it has not been completed, the process returns to step 25 and new connection information between diagrams m1 is extracted, and the above-described placement process is repeated for this.

When it is determined in step 29 that the processing for one page has been completed, in step 30, connections are performed based on the drawing indirect branch information and the generation of connection patterns between elements and between elements. The logical circuit diagram image is completed.

The image of the completed logic circuit diagram is outputted by a drawing output device 6, which may include a printer or the like.

When the logic circuit diagram of FIG. 10 created by the conventional method is re-created according to the present invention, it becomes as illustrated in FIG. 9.

According to the arrangement method of the present invention, it is possible to avoid a situation in which drawing-related branch information becomes intertwined with each other and blocks a connection path or makes it difficult to read the drawing.

Above, we have illustrated the case where the logic circuit diagram is connected to the left and right, but
The method of the present invention can also be applied to the case of vertical connection.

Effects of the Invention As explained in detail above, according to the arrangement method of drawing indirect branch information according to the present invention, an appropriate amount of free space is provided on both the input side and the output side, while the output side, where confusion is particularly likely to occur, is Since the configuration is such that drawing indirect branch information is arranged with appropriate free space according to the complicated situation, it is possible to avoid problems such as wiring routes being blocked or drawings becoming difficult to read due to confusing drawing indirect branch information. Problems are resolved effectively.

As a result, quality and productivity can be improved through the processes of designing, manufacturing, inspecting, and maintaining various logic circuits.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of related parts of a CAD system to which an embodiment of the present invention is applied, and FIG. 2 shows the flow of logic circuit image creation processing executed by the processing device 2 of FIG. 1. Flowcharts, FIGS. 3 and 4 are flowcharts showing the procedure for arranging inter-drawing connection information on the input side and output side in steps 27 and 28 of FIG. 2, respectively. FIGS. 7 and 8 are conceptual diagrams showing a specific example of arrangement processing of inter-drawing connection information; FIG. 9 is a conceptual diagram showing a specific example of arrangement processing of inter-drawing connection information on the output side;
This figure and FIG. 10 are conceptual diagrams showing an example of a logic circuit diagram created by the above-mentioned embodiment and a conventional method, respectively. 1... Main storage device, 2... Processing device, 3... Drawing input device, 4... Terminal device, 5... External storage file, 6... Drawing output device.

Claims (1)

[Claims] One-to-one with the element to be connected among the inter-drawing connection information on the input side.
For devices with a relationship of Those that are in a relationship are placed preferentially in a position where they can be connected to the outermost element on a straight line and have an empty space of one element frame field between them, and among the inter-drawing element information on the output side. Items whose size is greater than or equal to the element frame size and are continuous in the direction of this size are placed preferentially while being alternately shifted inward and outward by one element frame field in the direction of this size, and other items are placed preferentially. is a method for arranging inter-drawing connection information in logic circuit diagrams, which is characterized in that it is preferentially placed at the outermost adjacent position where it can be connected in a straight line with the element to be connected.