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:
Jun. 09, 2015
Filed:
Jul. 19, 2011
Shoji Matsumoto, Yokohama, JP;
Shoji Matsumoto, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A printed circuit board includes signal transmitting units that transmit signals, signal receiving units that receive signals, and a plurality of signal lines that connect the signal transmitting units and the signal receiving units. A resistor having a value Rp [Ω] of resistance with a first tolerance is provided between two signal lines that are adjacent to each other. In addition, a capacitor element that is connected in series to the resistor and that has a value Cp [F] of capacitance with a second tolerance is also connected between the two signal lines. In relation to the rise time tr [s] of the signals output from the signal transmitting units, the value Rp of resistance of the resistor and the value Cp of capacitance of the capacitor element are set such that an expression (Cp×Rp)×0.9≦tr/3≦(Cp×Rp)×1.1 is satisfied.