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:
Oct. 16, 2007
Filed:
Oct. 16, 2003
Yuichiro Murata, Tokyo, JP;
Yuichiro Murata, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
On the surface of a back board outermost-layer signal lines have different lengths. A difference in lengths of connector lines connected to the outermost-layer signal lines makes the total signal line lengths substantially equal. A digital signal generated in the circuit of a daughter board reaches a through hole through an internal-layer signal line traced within the internal layer of the daughter board, and is further transmitted to an internal-layer signal line of the back board through the a connector line, the an outermost-layer signal line, and a through hole. The digital signal is further transmitted to another internal-layer signal line via another through hole, another connector line, and another through hole.