US 7,257,792 B2 · Wiring board design aiding apparatus, design aiding method, storage medium, and computer program

Abstract

In a design aiding apparatus of the present invention, a plane clearance setting unit acquires information showing a predetermined margin, a component placement unit determines a placement area of a component such that, as seen in a lamination direction of a multilayer wiring board, at least one of the component and a pad connected to the component is included within a candidate area of a plane foil excluding a perimeter area, and a wiring unit determines a placement area of a wiring foil and a via in the same way that the placement area of the component is determined. Furthermore, in regard to a component, a component pad, a wiring foil, and a via whose placement areas have already been determined, a component placement inspection unit reports a design condition violation if the placement area of at least one of the component and the pad deviates outside the candidate area as seen in the lamination direction of the board, and a wiring inspection unit reports a design condition violation if the placement area of the wiring foil or the via deviates outside the candidate area as seen in the lamination direction of the board.

Claims17

Dependent claims

A design aiding apparatus for placing components on a multilayer wiring board with consideration for electromagnetic compatibility quality, comprising:

an information storage unit operable to store design information that includes design criterion information, component information, pin information and net information;
a plane foil-layer determining unit operable to determine a layer for placing a plane foil;
a plane foil-area determining unit operable to determine a plane foil-area for placing the plane foil on the plane foil-layer;
a perimeter-area detecting unit operable to detect a perimeter-area having a predetermined margin on the edge of the plane foil-area;
a prohibited-area determining unit operable to determine an area on a different layer corresponding to the perimeter-area as a prohibited-area;
and
a placing unit operable to place components within an area on the different layer corresponding to the plane foil-area excluding the prohibited-area.

4 more elements

A design aiding apparatus for wiring foils and vias on a multilayer wiring board with consideration for electromagnetic compatibility quality, comprising:

an information storage unit operable to store design information that includes design criterion information, component information, pin information and net information;
a plane foil-layer determining unit operable to determine a layer for placing a plane foil;
a plane foil-area determining unit operable to determine a plane foil-area for placing the plane foil on the plane foil-layer;
a perimeter-area detecting unit operable to detect a perimeter-area having a predetermined margin on the edge of the plane foil-area;
a prohibited-area determining unit operable to determine an area on a different layer corresponding to the perimeter-area as a prohibited-area;
and
a wiring unit operable to wire foils and vias within an area on the different layer corresponding to the plane foil-area excluding the prohibited-area.

4 more elements

Dependencies are inferred from the claim text.

Wiring board design aiding apparatus, design aiding method, storage medium, and computer program

Life of this patent

Wiring board design aiding apparatus, design aiding method, storage medium, and computer program

Life of this patent

Abstract

Claims17