Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A Josephson junction logic circuit comprising an output circuit having at least a single resettable Josephson device connected to a transmission line which is terminated with its characteristic impedance and having an input circuit coupled to said device, said output circuit having parameters which meet the following criteria:
Claim 2
Dependent Claim
48 words
A Josephson junction logic circuit comprising an output circuit having at least a single resettable Josephson device connected to a transmission line which is terminated with its characteristic impedance and having an input circuit coupled to said device, said output circuit having parameters which meet the following criteria:
Claim 3
Dependent Claim
165 words
A Josephson junction logic circuit according to claim 1, further including another inductance connected in parallel with said input circuit, the current through said input circuit controlling said at least a resettable Josephson junction, both of said inductances being connected to a source of bias current, said input circuit and said another inductance having parameters such that, in the absence of a signal from said signal means, said bias current is divided between said inductances resulting in a control current sufficient to keep said resettable Josephson junction in its voltage state, thereby generating an output in said transmission line and, such that, upon application of a signal from said signal means, current in said input circuit is reduced to a value insufficient to maintain said resettable Josephson junction in its voltage state, causing said resettable Josephson junction to switch to its zero voltage state, thereby eliminating an output signal in said transmission line and wherein the logic circuit parameters to ensure reversibility meet the conditions:
Claim 4
Dependent Claim
124 words
A Josephson logic circuit according to claim 1, wherein said input circuit includes a plurality of reversible Josephson devices electrically connected therein, a plurality of signal means each one of said signal means being electrically coupled to a reversible Josephson junction device, at least an inductance electrically connected to said plurality of reversible Josephson devices, said inductance having a value that, at least in the fundamental mode, where N 0, only less than one flux quantum can be trapped by said inductance and wherein Ibo/imo< pi 1 lambda where Ibo is the bias current supplied to said reversible junctions, lambda is proportional to the inductance L and, N is the maximum number of flux quanta, phi o, which can be trapped in the inductance.
Claim 5
Dependent Claim
74 words
A Josephson logic circuit according to claim 3, wherein said plurality of reversible Josephson devices are disposed in parallel in said input circuit, and said inductance is connected in parallel with said plurality of reversible Josephson devices, and has a value such that the current flowing therethrough when all of said plurality of signal means are energized assumes a magnitude sufficient to switch said at least a single resettable Josephson junction under the conditions:
Claim 6
Dependent Claim
105 words
A Josephson logic circuit according to claim 3, wherein said plurality of reversible Josephson devices are disposed in series in said input circuit and said inductance is disposed in parallel with said plurality of reversible Josephson devices, the condition of said circuit being such that upon activation of any one of said signal means, the current transferred into said inductance is sufficient to switch said resettable Josephson junction into its voltage state so as to produce an output signal in said transmission line and that said resettable junction switches back to the zero voltage state when said input signal ceases, in accordance with the criteria: