# US 2023/0274131 A1 · An artificial synapse circuit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0274131 A1 - Document ID: US20230274131A1 - Status: Published application - Kind: A1 - Application number: 18/000,553 - Filed: 2021-06-01 - Published: 2023-08-31 - Earliest claimed: 2020-06-02 - Assignees: Tobb Ekonomi Ve Teknoloji Universitesi - Applicants: Tobb Ekonomi Ve Teknoloji Universitesi - Inventors: Ali BOZBEY; Sasan RAZMKHAH - Web page: https://patentgrep.com/patent/US20230274131A1 ## CPC - G06N 3/065: Analogue means - G06N 3/049: Temporal neural networks, e.g. delay elements, oscillating neurons or pulsed inputs - G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS ## Abstract Disclosed are two embodiments of an artificial synapse circuit that enable calculation of the weights in artificial neural networks. The first embodiment includes: a plurality of weighting circuits in which a plurality of single blocks are formed by connecting together in series, each having a SQUID ring and a trigger circuit, and a converter circuit adapted to convert the total weights calculated by the weighting circuits into quantized pulses. The second embodiment additionally includes: a positive side and a negative side; a positive lower inductor connected to the output of the weighting circuits on the positive side; a negative lower inductor connected to the output of the weighting circuits on the negative side; a positive upper inductor paired with the positive lower inductor; and a negative upper inductor paired with the negative lower inductor. ## Claims ### Claim 1 An artificial synapse circuit comprising: a SQUID ring comprising a first junction, a second junction, a first inductor and a second inductor; a trigger circuit comprising an input, a third inductor paired with the first inductor, a fourth inductor paired with the second inductor, a first resistor connected in series with the third inductor and the fourth inductor, and a switch, and when a signal comes from the input while the switch is in conduction state, ensuring that a portion of the current passing through the third inductor is transmitted to the first inductor and a portion of the current passing through the fourth inductor is transmitted to the second inductor; a plurality of weighting circuits in which a plurality of single blocks are formed by connecting together in series, each comprising a SQUID ring and a trigger circuit; and a converter circuit adapted to convert the total weights calculated by the weighting circuits into quantized pulses. ### Claim 2 (depends on 1) The artificial synapse circuit according to claim 1, wherein the first junction and the second junction are Josephson junctions. ### Claim 3 (depends on 1) The artificial synapse circuit according to claim 1, wherein a weighting circuit is formed by connecting two single blocks in series with each other, each comprising a SQUID ring and a trigger circuit. ### Claim 4 (depends on 1) The artificial synapse circuit according to claim 1, wherein a weighting circuit is formed by connecting four single blocks in series with each other, each comprising a SQUID ring and a trigger circuit. ### Claim 5 (depends on 1) The artificial synapse circuit according to claim 1, wherein a current source is connected to the output of the weighting circuits. ### Claim 6 (depends on 1) The artificial synapse circuit according to claim 1, wherein the converter circuit is connected to the output of the weighting circuits. ### Claim 7 (depends on 1) The artificial synapse circuit according to claim 1, wherein a positive side and a negative side comprise a plurality of weighting circuits in which a plurality of single blocks, each comprising a SQUID ring and a trigger circuit, are formed by being connected together in series; a positive lower inductor connected to the output of the weighting circuits on the positive side; a negative lower inductor connected to the output of the weighting circuits on the negative side; a positive upper inductor, which is paired with the positive lower inductor, and to which part of the current flowing through the positive lower inductor is transferred; a negative upper inductor, which is paired with the negative lower inductor, and to which part of the current flowing through the negative lower inductor is transferred; a converter circuit connected to the negative upper inductor and adapted to convert the total net weight calculated by the positive side and negative side weighting circuits into quantized pulses. ### Claim 8 (depends on 7) The artificial synapse circuit according to claim 7, characterized by the positive side and the negative side, where the results of each of the weighting circuits connected in series on each side are collected separately. ### Claim 9 (depends on 8) The artificial synapse circuit according to claim 8, wherein the positive lower inductor and negative lower inductor are connected in series on a line in order to obtain the difference between the total weight on the positive side and the total weight on the negative side. ### Claim 10 (depends on 7) The artificial synapse circuit according to claim 7, comprising a first escape junction and a second escape junction located between the positive lower inductor and the negative lower inductor. ### Claim 11 (depends on 10) The artificial synapse circuit according to claim 10, wherein a current source is located between the first escape junction and the second escape junction. ### Claim 12 (depends on 7) The artificial synapse circuit according to claim 7, comprising a second resistor connected between the ground and the positive lower inductor and a third resistor connected between the ground and the negative lower inductor. ### Claim 13 (depends on 7) The artificial synapse circuit according to claim 7, comprising a pairing impedance connected between the ground and the positive upper inductor.