| US 7,489,139 B2 | ||
| System and method for checking decoupling of power supply in printed wiring board | ||
| Seiji Hamada, Osaka (Japan); Hirotsugu Fusayasu, Uji (Japan); Shoichi Mimura, Hirakata (Japan); and Miyoko Irikiin, Amagasaki (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 10/557,989 PCT Filed Feb. 14, 2005, PCT No. PCT/JP2005/002135 § 371(c)(1), (2), (4) Date Nov. 22, 2005, PCT Pub. No. WO2005/081143, PCT Pub. Date Sep. 01, 2005. |
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| Claims priority of application No. 2004-049453 (JP), filed on Feb. 25, 2004. | ||
| Prior Publication US 2007/0052439 A1, Mar. 08, 2007 | ||
| Int. Cl. G01R 31/00 (2006.01); G01R 31/02 (2006.01) | ||
| U.S. Cl. 324—537 [324/500; 716/5; 716/15] | 9 Claims |
| 1. A system for checking decoupling of power supply in a printed wiring board, comprising:
a power net extracting means for extracting a power net with power attribution, which is segmented by a power-decoupling element,
with reference to circuit design data of the printed wiring board;
a parts number extracting means for extracting a parts number of an integrated circuit which is connected to the extracted
power net;
a parts headcount calculating means for calculating a headcount of the integrated circuit which is connected to the extracted
power net;
a judging means for comparing the extracted parts headcount with a predetermined reference value; and
a representing means for representing a name of the power net and the parts number of the integrated circuit as an unprocessed
location of power decoupling when the headcount is equal to or larger than the reference value.
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