JPH05250440A - Marking drawing preparation processing system - Google Patents

Abstract

PURPOSE:To automatically lay out a marking character in a position in which it does not interfere in a through-hole, and to prevent a drawing preparation miss by extracting through-hole data from wiring pattern information of a printed board, and checking an interference in the marking character. CONSTITUTION:From pattern information, through-hole data of a printed board is extracted by a through-hole extracting means. Subsequently, from parts information, a marking character and a parts reference position of the marking character are extracted by a marking character layout means. Moreover, a marking character 31 is arranged in a parts reference position 32 first, and whether it interferes in a through-hole 33 extracted already or not is checked. In the case it interferes, the marking character 31 is arranged in order of an arrangement lattice 34 in the vicinity of the parts reference position 32 in accordance with priority order of 1-24 from the parts reference position 32. The processing is repeated until a position in which the marking character 31 does not interfere in the through-hole 33 is detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking diagram generation processing method on a printed circuit board, and more particularly to a marking character layout processing method.

[0002]

2. Description of the Related Art In the conventional marking board generation processing method for a printed circuit board, the layout position of the marking characters is determined so as not to overlap the surrounding through holes while manually referring to the wiring pattern diagram of the printed circuit board to prepare the drawing. I was going.

[0003]

The above-mentioned conventional marking board generation processing method for a printed circuit board requires a large number of man-hours for a designer because a marking drawing is created manually, and printing is performed from the created drawing. As a result of drawing the marking characters on the substrate, there is a problem that drawing errors are likely to occur, such as the marking characters overlapping the through holes and missing.

[0004]

According to the marking diagram generation processing method of the present invention, there is provided through-hole extracting means for extracting through-hole data from the wiring pattern information of the printed circuit board in the marking diagram generation processing of the printed circuit board, and on the component. And a marking character layout means for automatically laying out the positions of the marking characters of the component name and automatically laying out the marking characters of the part name in a position where they do not interfere with the surrounding through holes. Grids for arranging the marking characters at positions that do not interfere with the holes are arranged in order of priority from the vicinity of the component reference position.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the construction of an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of the marking diagram generation mechanism of this embodiment, and FIG. 3 is a marking character display position determining method and method according to this embodiment. It is a top view which shows a display position priority and a marking character display example in (a), (b), (c), respectively.

As shown in FIG. 1, the marking diagram generation processing system in this embodiment is realized by an input / output unit 11, an arithmetic processing unit 12, a data storage unit 13 and a marking diagram generation mechanism 14, and the marking diagram generation mechanism is used. Reference numeral 14 includes a through hole extracting means 15 and a marking character layout means 16.

Next, the operation of this embodiment will be described with reference to the flowchart of FIG. However, FIGS. 1 and 3 are cited as needed. In addition, in FIG. 3B, the priority of the position is given priority in the order of the smallest grid number. I / O device 11
Through hole data of the printed circuit board is extracted by the through hole extracting means 15 from the pattern information which is already stored in the data storage device 13 (FIG. 1) from (FIG. 1) (step 21). Next, from the component information, the marking character and the component reference position of the marking character registered in the component library are displayed as the marking character layout means 1
6 to extract (steps 22 to 23). Further, in the marking character layout means 16, first, the marking characters 31 shown in FIG.
It is checked whether or not it interferes with the already extracted through hole 33. When they interfere with each other (FIG. 3A), the marking characters 31 are arranged in order from the component reference position 32 to the placement grid 34 in the vicinity of the component reference position 32 in the order of priority 1 to 24 shown in FIG. 3B. Place it. Marking letter 3
The process is repeated until the position where 1 does not interfere with the through hole 33 is found, and the display position is determined as shown in FIG. 3C (step 24).

[0009]

As described above, according to the present invention, the marking characters are automatically laid out at the positions not interfering with the through-holes and the marking drawing is generated, thereby reducing the number of man-hours required for the designer to create the marking drawing and making mistakes in drawing creation. There is an effect that can prevent.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing an operation of a marking diagram generation mechanism.

[Fig. 3] Marking character display position determination method, display position priority, and marking character display example (a),
It is a top view shown in (b) and (c).

[Explanation of symbols]

 14 Marking Diagram Generation Mechanism 15 Through Hole Extracting Means 16 Marking Character Layout Means 31 Marking Characters 32 Component Reference Positions 33 Through Holes 34 Arrangement Grid 35 Components

Claims (2)

[Claims] 1. In a marking drawing generation process of a printed circuit board, through hole extraction means for extracting through hole data from wiring pattern information of the printed circuit board, and a position of a marking character on a part and the marking of a part name. A marking diagram generation processing method comprising: a marking character layout means for automatically laying out characters at positions that do not interfere with surrounding through holes. 2. The marking character layout means is characterized in that a grid for arranging the marking characters at a position that does not interfere with the through hole is arranged in order of priority from the vicinity of the component reference position. The marking diagram generation processing method according to item 1.