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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShoichi Mimura, Hirotsugu Fusayasu, Miyoko Irikiin, Seiji Hamada
Estimating the term…
A printed wiring board design method including the steps of designing placement and wiring for circuit components based on circuit information on a mounting surface of the board; excluding a placement region and a wiring region for the circuit components from the mounting surface to thereby calculate a placement and wiring enable region for an EMC component in which the EMC component can be placed and wiring can be laid down; and calculating the placement and wiring range for the EMC component based on an EMC design rule from the calculated placement and wiring enable region for the EMC component. Thus, a printed wiring board design method is provided in which placement of and wiring for a new bypass capacitor or the like can be implemented and a region satisfying restraint items from the design rule can be clearly displayed as a new input enable region on a CAD screen.
A printed wiring board design method comprising:
A printed wiring board design method comprising:
A printed wiring board design device comprising means in which placement and wiring regions for circuit components are excluded from a mounting surface, where placement of and wiring for circuit components is designed, to calculate a placement and wiring enable region for EMC components in which the EMC components can be placed and wired, and placement and wiring ranges for the EMC components are calculated based on the calculated placement and wiring enable region and an EMC design rule, and said placement and wiring range is displayed, wherein said placement and wiring ranges for the EMC components are set as ranges where a designer is allowed to designate other ranges that restrict the placement and wiring of the EMC components.
A printed wiring board design device comprising means in which placement and wiring regions for circuit components are excluded from a mounting surface, where placement of and wiring for circuit components is designed, to calculate a placement and wiring enable region for EMC components in which the EMC components can be placed and wired, and placement and wiring ranges for the EMC components are calculated based on the calculated placement and wiring enable region and an EMC design rule, and said placement and wiring range is displayed,
Dependencies are inferred from the claim text.