JPH02139671A - Printed board layout system - Google Patents

Abstract

PURPOSE:To reduce the number of working processes and to reduce a correction error by equipping the title system with a means to re-wire an existing wiring along the wiring route of a terminal connection in consideration of allowable free capacity and automatically executing processing for correcting the existing wiring. CONSTITUTION:The wiring route of the terminal connection is determined according to an interactive system, the free areas of respective both sides of segments are obtained along the wiring route by a free area calculating module 107, and existing wiring information included in the free areas is taken out while an existing wiring information extracting module 106 is referred to. Next, the intersection between the wiring route of the terminal connection and the existing wiring is checked, and it is checked whether capacity for wiring the terminal connection remains or not by calculating the free capacity obtained by subtracting information for the existing wiring from allowable free capacity information. When the wiring is allowed from the result of the checking, the existing wiring is re-wired at the interval for the allowable free capacity from the wiring route of the terminal connection. Thus, the number of the working processes can be reduced, and the correction error caused by the correction of the existing wiring can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a printed board layout method suitable for use in an interactive CAD system.

(Prior Art) A printed board layout CAD system is a system in which signal connection information is wired to a printed board using a keyboard, mouse, or tablet facing a display. Some wiring methods have an automatic wiring function, but not all wiring can be done, and the remaining end connections must be wired interactively.

The wiring of the end connections is performed while modifying the existing wiring, but as the wiring density increases, the work of modifying the existing wiring increases.

Recent CAD systems have been designed to automatically move existing wiring, but these systems function only within a limited range. For example, when a through hole is placed on top of existing wiring, the existing wiring is automatically corrected so that it surrounds the through hole.

(Question 8 to be solved by the invention) Automatic correction of existing wiring is only possible when through-holes are placed; in reality, in many other cases, existing wiring must be corrected interactively, which takes a lot of time. There were problems such as the need for

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a printed board layout method that facilitates the wiring work of terminal wires and improves operability.

[Structure of the Invention] (Means and Effects for Solving the Problems) The present invention provides for a wiring route of an end connection line that is determined without considering the empty capacity with an already-wired button, an empty area adjacent to the wiring route. means for extracting information on existing wiring that passes through the obtained empty area; and means for extracting information on existing wiring that passes through the empty area, and determining whether the wiring button of the end connection is sufficient within the empty area from the information on the empty area, the existing wiring information, and the allowable space between the wiring data. A method for determining whether there is space, and if it is determined that there is space and it is possible to route the end connection, route the existing wiring along the wiring route of the end connection while taking into account the allowable space. The present invention is characterized in that it automatically processes corrections to existing wiring in end-connection wiring.

As a result, the existing wiring related to the connection wiring work is automatically corrected, thereby reducing the number of command instructions for the wiring work, reducing the number of work steps, and eliminating correction errors caused by correcting the existing wiring.

(Example) Hereinafter, an example of the present invention will be described in detail using the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 101 is a CPU, which serves as the control center of the system. Reference numeral 102 is an end-connection wiring route storage module in which the end-connection wiring route determined interactively or by some other means is stored. 103 is a wiring information storage module in which wiring routes have already been determined and are stored as vectors.

Reference numeral 104 denotes a failure information storage module in which information about fixed wiring buttons, such as bottles, power button, etc., is stored. Reference numeral 105 is an allowable free space storage module in which the allowable free space between bats, wiring patterns, and wiring bats is stored. 1
Reference numeral 06 denotes an existing wiring information extraction module, which extracts existing wiring buttons in the empty area of the empty area calculation module 109.

Reference numeral 107 denotes a free space calculation module, which calculates the wiring route of the end connection and the free space between existing wires based on the value of the allowable free space storage module 105. Also check for intersections. Reference numeral 108 denotes a wiring module, which rewires along the wiring route of the end connection, taking into consideration the allowable free space. 1
09 is an empty area calculation module that calculates an empty area adjacent to the wiring route of the end connection line.

FIG. 2 is a flowchart showing the operation of the embodiment of the present invention. In the figure, 201 is a step for determining the wiring route of the end connection, and the wiring route specified in an interactive manner is determined. 202 is a step of extracting an adjacent empty area, in which an empty area of a wiring route of a terminal line or an existing wiring route is extracted.

203 is a step of extracting information on existing wiring in the empty area, and information on existing wiring passing through the empty area extracted in step 202 is extracted. Reference numeral 204 is a step for checking the empty capacity and intersection, in which the empty capacity is calculated by checking the intersection between the wiring route of the end connection and the existing wiring, and taking into account the existing wiring. 205 is a step of rewiring the existing wiring, in which the existing wiring is rerouted along the wiring route of the end connection line.

3 and 4 are diagrams conceptually showing the operation of the embodiment of the present invention on a printed board, respectively. FIG. 3 shows a state in which the wiring route of the end connection line has been specified, and FIG. 4 shows a state in which the route of the existing wiring pattern has been rewired. In Fig. 3, 301 is a fault, 302 is a through hole of already wired,
303 is an existing wiring pattern, 304 is a through hole for the end connection, 305 is the wiring route for the end connection, 306 is one segment of the wiring route for the end connection, and 307 is the segment 30.
6 shows an empty area in one direction (a square frame indicated by diagonal lines in the figure).

The operation of the embodiment of the present invention will be explained below.

First, the wiring route of the terminal wire is determined in an interactive manner (step 201 in FIG. 2, wiring routes 304 (through holes) and 305 in FIG. 3). Next, the sky area calculation module 10
In step 7, empty areas on both sides of each segment are determined along the wiring route (3o4, 305). Here, existing wiring is not considered an obstacle (empty area 307 for segment 306).
). If empty space is not required, wiring is not possible. Then, referring to the existing wiring information extraction module 106, the existing wiring information included in the empty area is extracted (in the empty area 307, existing wiring 303).

Next, check the intersection between the wiring route of the end connection and the existing wiring. If any intersection occurs, wiring will not be possible. In addition, the free space is calculated by subtracting the line segment from the allowable free space information, and it is checked whether there is enough capacity left to wire the end line. If there is no space, return to the above wiring not possible. Here, the empty area is found on the extension of the side adjacent to the empty area found first. As a result of the above check, if the wiring is possible, re-route the existing wiring at an interval corresponding to the allowable free space from the wiring route of the end connection.

[Effects of the Invention] As explained above, according to the present invention, the number of commands for the wiring work is reduced by automatically correcting the existing wiring in the wiring work of the end connection line, and the number of work man-hours is accordingly reduced. There are also secondary effects such as a reduction in wiring and the elimination of correction errors due to correction of existing wiring.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a flow chart showing the operation of the embodiment of the present invention, and Figs. 3 and 4 are conceptual diagrams showing the operation of the embodiment of the present invention on a printed board. FIG. 101... CPU, 102... End connection wiring route storage module, 103... Existing wiring information storage module, 105... Allowable free space storage module, 108...
- Wiring module, 109...Empty area calculation module. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 2

Claims (1)

[Claims] A means for determining an empty area adjacent to the wiring route for the wiring route of the end connection line, a means for extracting existing wiring information that passes through the obtained empty area, and an allowable empty space between the empty area, the existing wiring information, and the wiring data. A method for determining from information whether or not the wiring pattern of the end connection is empty within the empty area, and
A printed board layout method characterized by comprising means for modifying the existing wiring along the wiring route of the end connection while taking into consideration the allowable free space when it is determined that the end connection can be routed.