JPH11134374A - Method for displaying circuit diagram in circuit diagram data editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for displaying a circuit diagram in a circuit diagram data editing device capable of easily identifying a special net in circuit diagram editing work, of preventing an edition error and of reducing the burden of the work. SOLUTION: Each kind of a condition to be applied to a special net is defined in a table 31 and numbers #1-#3 are preliminarily set in each condition. Also, each note is made to correspond to each number. A designer selects a net required to which the condition is applied in a circuit diagram on a display screen (33). The selected net is emphatically displayed and the list of conditions to be applied to this is displayed (32). When the designer selects the desired number, the number is automatically arranged in the neighborhood of the net (34). At the time of confirming the condition of the net to which the number is applied, the list of the conditions of the net can be displayed (37).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a CAD (Computing)
er Aided Design) A method for editing circuit diagram data on a printed circuit board or the like in an apparatus. In particular, a user visually recognizes a special net with high-speed circuit conditions and mounting wiring conditions specified in a circuit diagram. The present invention relates to a method for displaying a circuit diagram in an interactive circuit diagram data editing apparatus capable of editing a diagram.

[0002]

2. Description of the Related Art When displaying circuit diagram data on a display screen in a circuit diagram data editing apparatus, it is important how to display a special net specified with a specific wiring condition in an easily understandable manner. As a conventional technique relating to a display method of a special net of this kind, for example, as disclosed in Japanese Patent Application Laid-Open No. 8-137927, a physical change such as the thickness, color, and pattern of the special net is added to the special net. There was a method of visually distinguishing the differences between the respective nets for display.

Here, a conventional display method will be described with reference to FIG. In this display method, first, the circuit diagram is displayed on a display screen of a predetermined display device, a special net is highlighted, and it can be distinguished from other nets. Next, an annotation / note is added near the special net. Specifically, for a net having a certain condition, one of a plurality of line segment patterns determined in advance is selected and displayed (see reference numeral 41), and a list of the determined line segment patterns is displayed. The difference is specified, or the annotation of the line segment pattern is described in the same drawing or separately (see reference numeral 42).

[0004]

The above-mentioned conventional method for displaying circuit diagram data has the following problems. (1) In the conventional technology, the special net is identified by thickness,
Although nets such as color schemes and patterns are physically changed and displayed for classification, if the types of special nets vary widely, visual classification / identification becomes difficult. because,
This is because, when the types of special nets are various, the number of similar ones increases, and thus identification based on visual perception confuses a designer and gives erroneous conditions to the special nets.
In addition, when a circuit diagram created by a conventional display method is printed on paper and converted to a secondary document using a facsimile or a copy, the thickness and the pattern are crushed and identification errors easily occur. . (2) In the prior art, the detailed contents of a special net are displayed with annotations near the net or a memo is created by a designer on a separate sheet. Since the number of places and notes to which annotations are added increases, and the number of steps for searching for the annotations and notes corresponding to the net increases, the number of steps increases greatly.

The present invention has been made in view of the circumstances described above, and enables a designer to easily recognize a wide variety of special nets in an interactive circuit diagram editing operation, and to prevent a circuit diagram editing error from occurring. Another object of the present invention is to provide a method for displaying a circuit diagram in a circuit diagram data editing apparatus, which can reduce the burden of the work by preventing the problem.

[0006]

The invention according to claim 1 is
In a method for displaying a circuit diagram on a display screen, and in a method of displaying a circuit diagram in an interactive circuit diagram data editing apparatus in which a user edits circuit diagram data while visually confirming the circuit diagram, wiring is performed between symbols on the circuit diagram. A number specifying the wiring condition of the special net is given to the special net among the special nets, and the number given to the special net is displayed near the special net when a circuit diagram is displayed on a display screen. A gist of the present invention is a method for displaying circuit diagram data in a circuit diagram data editing apparatus.

According to a second aspect of the present invention, there is provided a circuit diagram data editing apparatus according to the first aspect, wherein in addition to the number, an annotation of the special net set in advance corresponding to the number is displayed. The gist is a method for displaying a circuit diagram.

According to a third aspect of the present invention, there is provided a circuit according to the first aspect, wherein when a special net is designated by a user, each information associated with a number assigned to the special net is displayed. The gist is a method of displaying a circuit diagram in the diagram data editing apparatus.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a circuit diagram data editing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the circuit diagram data editing apparatus controls a keyboard 1a for inputting data, a mouse 1b for selecting a special net and specifying a point where an annotation is to be arranged, and controls circuit diagram editing. CPU 2, a storage device 3 for storing a condition definition file, a control program and circuit diagram data registered as a database with a number assigned for each condition of various special nets, and a circuit diagram and displaying information of the special net on the circuit diagram. The display device 4 is provided, and the CPU 2 edits the circuit diagram data inputted by the designer from the input device 1 by the display executing means 5, and displays the edited circuit diagram on the display device 4. .

The display execution means 5 includes a number assigning function 5a for assigning a number corresponding to various special net conditions to a special net when editing a circuit diagram, and an annotation for displaying an annotation corresponding to the number near the special net. A display function 5b;
Similarly, a detailed content display function 5c for displaying conditions as a list when it is desired to check the details of the conditions corresponding to each number.

The feature of this embodiment is that the condition of each special net can be easily assigned to a wide variety of special nets by a designer, and can be confirmed at the same time.

Next, referring to the flowchart shown in FIG.
The operation of the present embodiment will be described.

In this circuit diagram data editing device, circuit diagram data created by input means including the keyboard 1a and the mouse 1b is drawn on the display device 4 (step 21).

When the designer confirms the drawing contents, the designer executes the numbering function 5a, and selects a net that requires special net conditions from the circuit diagram using the mouse 1b (step 22). In this case, a single net is specified and a plurality of nets are specified when the same condition exists in a plurality of nets, and the selected net is highlighted.

Next, the number definition function 5a reads a condition definition file in which net conditions for each number are registered as a database in advance, and draws a list of conditions on the display device 4 (step 24).

The designer selects necessary conditions for the net from the list of drawn conditions by using the mouse 1b (step 25). The list is made up of numbers and comments to be described later, and the designer can quickly select the list.
In the case where it is not possible to determine only by the annotation, the number is selected with a mouse to display a detailed content display function 5c
Is started, and conditions corresponding to the number are displayed as a list on the display device (step 26).

When the selection of the condition is completed, the numbering function 5
In step a, the coordinate calculation process is performed at the determined location, and the number of the selected condition is automatically arranged (step 27). Specifically, check that there are no obstacles such as line segments and comments of other nets at the intermediate position of the net connected between the symbols, and if there are, avoid them before and after the intermediate position and find each temporary position. After deciding, the one closer to the middle position from the front and rear temporary positions is selected and automatically arranged.

After the arrangement of the numbers is completed, the arrangement of the annotations corresponding to the numbers is executed by the annotation display function 5b.
Here, the display of the annotation in the conventional technique is automatically arranged at an arbitrary position.However, since the annotation has a disadvantage that the arrangement area is large, the position intended by the designer at the stage of avoiding an obstacle is determined. There was a problem that deviated greatly. On the other hand, in the annotation display function 5b according to the present embodiment, the annotation is displayed in a dragging manner near the net (employed at a tentative position), and the designer selects the annotation displayed in a dragging manner with a mouse, and selects an arbitrary annotation. Move to the position and arrange. Note that the number and the annotation can be easily deleted or moved even after the condition is set.

Next, the operation of the present embodiment will be described in detail with a specific example. In FIG. 3, various conditions to be given to the special net are defined in a table 31.
Numbers # 1 to # 3 are set in advance for each condition. An annotation is associated with each number (reference numeral 3).
2).

The designer first activates the display execution means condition giving mode, and then selects a net which needs to be given a condition from the circuit diagram developed on the screen using the mouse (reference numeral 3).
3). As a result, the selected net is highlighted, and a list of conditions to be assigned to the selected net is loaded from the condition table and displayed (see reference numeral 32).

The designer selects a number corresponding to a condition necessary for the net from a condition list. Thus, the selected number is automatically arranged near the net (see reference numeral 34).

Next, the placement of the annotation is promoted. The designer selects the annotation with a mouse, moves the annotation to an arbitrary position, and places it (see reference numeral 35). To visually confirm the conditions of the numbered net, the designer selects the net with a mouse (see reference numeral 36). As a result, a list of conditions of the net is displayed and the contents can be confirmed (see reference numeral 37).

[0023]

According to the present invention, the following effects can be obtained. (1) As a method of displaying each net, a method of giving a number to a net and displaying it instead of a physical display method that easily causes an identification error such as coloring or patterning is adopted. Even in a wide variety of cases, the user can easily visually identify the difference between the nets, and can search for specific conditions from the numbers. Therefore, the user
The conditions given to the net can be quickly recognized, and identification errors can be prevented. (2) Since the conditions of the special net are output as annotations near the net, it is not necessary for the user to newly create a memo for annotation, and the number of circuit diagram creation steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a circuit diagram data editing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the embodiment.

FIG. 3 is a diagram showing a specific example of the operation of the embodiment.

FIG. 4 is a diagram illustrating a conventional method for displaying circuit diagram data.

[Explanation of symbols]

 1a Keyboard 1b Mouse 2 CPU 3 Storage 4 Display 5 Display execution means 5a Number assigning function 5b Annotation display function 5c Detailed content display function

Claims (3)

[Claims] 1. A method for displaying a circuit diagram in a conversational circuit diagram data editing apparatus in which a circuit diagram is displayed on a display screen and a user edits the circuit diagram data while visually confirming the circuit diagram. A number specifying the wiring condition of the special net is assigned to the special net among the nets wired between the symbols, and the number is assigned to the special net near the special net when the circuit diagram is displayed on the display screen. A method for displaying circuit diagram data in a circuit diagram data editing device, wherein the circuit diagram data is displayed. 2. The method for displaying a circuit diagram in a circuit diagram data editing apparatus according to claim 1, wherein, in addition to the number, an annotation of the special net set in advance corresponding to the number is displayed. 3. A circuit in a circuit diagram data editing apparatus according to claim 1, wherein when a special net is designated by a user, each information associated with a number given to said special net is displayed. How to display the diagram.