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. 28, 2003
Filed:
Dec. 19, 2000
Kevin C. Spisak, Beaverton, OR (US);
Michael S. Hagen, Vancouver, WA (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
Apparatus for data bus expansion between two instrument chassis comprises a first interface circuit, a connecting cable, and a second interface circuit. Detection circuitry in each interface circuit detects slot position. Slot position determines direction of address and data flow for each card. One of the first and second interface circuits is connected to a controller slot in a first chassis, and the other of the first and second interface circuits is connected to a non-controller slot in a second chassis. Bus interface circuitry for signal and identification are reconfigured in accordance with slot determination. As a result, the assembly formed by connection of two substantially identical interface cards with a cable, is symmetric and reversible.