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:
Nov. 15, 1994
Filed:
May. 20, 1993
Larry K Wong, Kanata, CA;
Northern Telecom Limited, Montreal, CA;
Abstract
A backplane databus and bussing method provide multidrop signal distribution using capacitive and inductive coupling of a main signal. A main signal loop on the backplane has a plurality of coupling loops coupled thereto for a respective length L.sub.C. The main signal, typically a NRZ trapezoidal shaped waveform is coupled into the coupling loops as a bipolar signal. The main signal loop is terminated by a resistor having a resistance equal to the characteristic impedance of the track forming the main signal loop. Similarly, the coupling loops are terminated at a far end by resistors whose impedance is equal to the characteristic of the track forming the coupling loop. The near end of the loop is connected to a receiver having a matching input impedance.