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:
Mar. 29, 2016
Filed:
Oct. 09, 2014
Hitachi Metals, Ltd., Tokyo, JP;
Hiroshi Ishikawa, Hitachi, JP;
Takahiro Sugiyama, Hitachi, JP;
Izumi Fukasaku, Hitachi, JP;
Hidenori Yonezawa, Hitachi, JP;
Masafumi Kaga, Hitachi, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
A differential signal cable is composed of two inner conductors, an insulator, which covers the two inner conductors separately or together, and an outer conductor, which covers a circumference of the insulator. When measured in a cable length of 1 m, an effective capacitance difference ΔX represented by Formula (1) below is not greater than 0.2 percent of an average value C of capacitances of the two inner conductors,Δ  (1),where ΔC is a difference in capacitance between the two inner conductors, ΔL is a difference in inductance between the two inner conductors, and Zis a reference impedance (50 ohms).