The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2008
Filed:
Aug. 15, 2005
Kazuhiko Tokuda, Kawasaki, JP;
Kazuhiko Tokuda, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
From design information on a circuit board a wiring designation unit designates a wiring model for signal analysis. A first analysis unit generates, through a 3-D electromagnetic analysis, a first output waveform received at a receiving end of a wiring model when a first input signal pattern changing from 0 to 1 is input to a sending end of the wiring model. A second analysis unit generates, through the 3-D electromagnetic analysis, a second output waveform received at the receiving end of the wiring model when a second input signal pattern changing from 1 to 0 is input to the sending end of the wiring model. An output waveform generation unit selects the first output waveform at bitof a random signal of about 100 bits and selects the second output waveform at bitthereof to generate for a predetermined bit count the first output waveform or the second output waveform selected with each bit position as a starting point. An output waveform synthesis unit synthesizes the output waveforms for the bit count to generate an output waveform received at the receiving end when the random signal is input to the sending end of the wiring model.