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:
Apr. 08, 2008
Filed:
Nov. 17, 2005
Wiren D. Becker, Hyde Park, NY (US);
Bruce J. Chamberlin, Vestal, NY (US);
Roland Frech, Ostfildern, DE;
Andreas Huber, Leonberg, DE;
George Katopis, Poughkeepsie, NY (US);
Erich Klink, Schoenaich, DE;
Andreas Rebmann, Schoenaich, DE;
Thomas-michael Winkel, Schoenaich, DE;
Wiren D. Becker, Hyde Park, NY (US);
Bruce J. Chamberlin, Vestal, NY (US);
Roland Frech, Ostfildern, DE;
Andreas Huber, Leonberg, DE;
George Katopis, Poughkeepsie, NY (US);
Erich Klink, Schoenaich, DE;
Andreas Rebmann, Schoenaich, DE;
Thomas-Michael Winkel, Schoenaich, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention relates to computer hardware design and in particular to a printed circuit board comprising wiring dedicated to supply electric board components such as integrated circuits with at least three different reference planes. In order to provide a printed circuit board having an improved signal return path for basically all relevant signal layers at transitions between card, connector, module and chip while still holding the cross-section structure simple, it is proposed to establish a layer structure wherein a) a split voltage plane is located adjacent to one side of one of said reference planes and comprises conducting portions for all of said at least three different voltage levels in respective plane parts, and b) a signal layer being located adjacent to said reference planes.