PATENT CLAIM ANALYSIS

Application Number: 16047883
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-08
Patent Classification: ["326", "003000"]

Abstract:
A Josephson inverter gate circuit provides efficient implementation of polarity or logical inversion while eliminating the need for physically large high-efficiency magnetic transformers in the signal path. The circuit can consist of a half-twisted Josephson transmission line (JTL) or a JTL with an unshunted floating Josephson junction that produces two single flux quantum (SFQ) pulses when triggered by an SFQ input signal, which results in an output SFQ signal of reversed polarity. Implemented as a logical inverter, proper initialization of the circuit is accomplished within the signal inversion stage with flux biasing.

Claim (Index 16):
A method of logically inverting a signal value based on single flux quantum (SFQ) pulse inputs, the method comprising:\n providing a first negative SFQ pulse to an output end of a Josephson transmission line (JTL) to set an output-side Josephson junction in the JTL that is nearer the output end of the JTL than an input end of the JTL to a 2\u03c0 superconducting phase, the JTL having a central portion between the input and output ends of the JTL; before or after providing the first negative SFQ pulse, but before the first negative SFQ pulse can propagate through the central portion of the JTL to the input end of the JTL, injecting one of:\n one \u03a6 0  of current into a central loop in the central portion of the JTL as an initializing current, such that the first negative SFQ pulse is annihilated by the initializing current and does not propagate through to the input end of the JTL, without affecting the superconducting phase of the output-side Josephson junction, or \n one \u03a6 0 /2 of current into a floating Josephson junction in the central portion of the JTL as an initializing current, such that the first negative SFQ pulse is annihilated by the initializing current and does not propagate through to the input end of the JTL, without affecting the superconducting phase of the output-side Josephson junction; and \n providing a positive SFQ pulse to the input end of the JTL to set to a 2\u03c0 superconducting phase an input-side Josephson junction that is nearer the input end of the JTL than the output end of the JTL, such that the positive SFQ pulse propagates to the output end of the JTL to reset to 0 the superconducting phase of the output-side Josephson junction.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 95.0
- Lexical Diversity: 1.48529
- Patent Class: 326.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15887524', '15810954', '15886626', '15937418', '15810907']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7224885608430924
- 35 USC 102 Novelty (BERT): 0.6405301235637514
- Combined Prediction Score: 0.7142927171151584
- Mean Citation Score: 446.457114
- Max Citation Score: 667.6732
- Similarity Product: 580.4824985154627

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test