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. 15, 2019
Filed:
Nov. 30, 2018
Alexander Louis Braun, Baltimore, MD (US);
Alexander Louis Braun, Baltimore, MD (US);
NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US);
Abstract
An inverting reciprocal quantum logic (RQL) phase-mode D flip-flop accepts a data input and a logical clock input. The flip-flop includes a stacked Josephson junction and a comparator. The triggering or untriggering of the stacked Josephson junction by positive or negative single flux quantum (SFQ) pulses can switch a direction of DC bias current through a component of the comparator, such as an output Josephson junction, which can then either pass or suppress logical clock SFQ pulses. When so passed, the data input is captured to the output upon clocking the flip-flop via the provision of the logical clock SFQ pulses, e.g., as reciprocal pulse pairs.