# US 12,001,539 B2 · Interfacing with a one-wire device that is in parallel with a low-impedance element, and related systems and devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,001,539 B2 - Document ID: US12001539B2 - Status: Granted - Kind: B2 - Application number: 17/813,558 - Filed: 2022-07-19 - Published: 2022-11-10 - Granted: 2024-06-04 - Earliest claimed: 2019-10-10 - Assignees: Microchip Technology Incorporated - Applicants: Microchip Technology Incorporated - Inventors: Daniel J. Russell; Albert S. Weiner; Suraj Sridhar - Web page: https://patentgrep.com/patent/US12001539B2 ## CPC - G06F 21/44: Program or device authentication - G06F 21/85: interconnection devices, e.g. bus-connected or in-line devices - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Some embodiments of the present disclosure relate to a system that may include a replaceable module and a user device. The replaceable module may include an element and a one-wire authentication element in parallel with the element. The user device may be configured for operable coupling with the replaceable module. The user device may include a power source configured to provide power to the element, an authentication unit configured to perform a verification process for verifying authenticity of the replaceable module, and a signal conditioning unit arranged in a communication path between the one-wire authentication element and the authentication unit. ## Claims ### Claim 1 An apparatus comprising: a replaceable module comprising: an element electrically coupled between a first line and a second line, the element forming a first current path between the first line and the second line; and a one-wire authentication element electrically in parallel with the element between the first line and the second line, the one-wire authentication element forming a second current path between the first line and the second line, the one-wire authentication element to provide an authentication response, wherein the replaceable module to divide a first current into a second current along the first current path and a third current along the second current path, and wherein the one-wire authentication element to modulate the first current utilizing the third current. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the one-wire authentication element has an impedance of at least ten times greater than an impedance of the element. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the element comprises a heating element. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the one-wire authentication element to modulate the first current by altering the third current to provide the authentication response. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the one-wire authentication element to provide the authentication response responsive to receiving an authentication challenge. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the one-wire authentication element to provide the authentication response responsive to detecting a connection of the replaceable module to a user device. ### Claim 7 A system, comprising: a replaceable module comprising: an element electrically coupled between a first line and a second line; and a one-wire authentication element electrically in parallel with the element between the first line and the second line; and a user device to operably couple to the replaceable module, the user device comprising: an authentication unit to perform a verification process for verifying authenticity of the replaceable module, and to permit operable coupling between the user device and the replaceable module responsive to verifying the authenticity of the replaceable module. ### Claim 8 (depends on 7) The system of claim 7, wherein, while operably coupled, the replaceable module and the user device form a system to perform a process that would deplete an item disposed within an item region. ### Claim 9 (depends on 7) The system of claim 7, wherein permitting operable coupling comprises permitting flow of power to the element of the replaceable module. ### Claim 10 (depends on 7) The system of claim 7, wherein the user device comprises signal-conditioning circuitry arranged between the authentication unit and the one-wire authentication element of the replaceable module. ### Claim 11 (depends on 10) The system of claim 10, wherein the signal-conditioning circuitry is coupled to the first line and the second line. ### Claim 12 (depends on 10) The system of claim 10, the signal-conditioning circuitry comprising a filter, an amplifier, and a comparator. ### Claim 13 (depends on 10) The system of claim 10, wherein the authentication unit to provide an authentication challenge, wherein the one-wire authentication element to provide an authentication response responsive to the authentication challenge, and wherein the signal-conditioning circuitry to condition a signal carrying the authentication response such that the authentication response is detectable by the authentication unit. ### Claim 14 (depends on 10) The system of claim 10, wherein the one-wire authentication element to provide an authentication response responsive to detecting a connection of the replaceable module to the user device, and wherein the signal-conditioning circuitry to condition a signal carrying the authentication response such that the authentication response is detectable by the authentication unit. ### Claim 15 (depends on 7) The system of claim 7, wherein the element forms a first current path and the one-wire authentication element forms a second current path and wherein the replaceable module to divide a first current into a second current along the first current path and a third current along the second current path and wherein the third current is usable by the one-wire authentication element to modulate the first current. ### Claim 16 (depends on 15) The system of claim 15, wherein the authentication unit to provide an authentication challenge, wherein the one-wire authentication element to modulate the first current by altering the third current to provide an authentication response to the authentication challenge. ### Claim 17 (depends on 15) The system of claim 15, wherein the user device comprises signal-conditioning circuitry arranged between the authentication unit and the one-wire authentication element of the replaceable module, wherein the authentication unit to provide an authentication challenge, wherein the one-wire authentication element to modulate the first current by altering the third current to provide an authentication response to the authentication challenge, and wherein the signal-conditioning circuitry to condition a signal carrying the authentication response such that the authentication response is detectable by the authentication unit. ### Claim 18 A method, the method comprising: receiving an authentication response; conditioning a first signal carrying the authentication response thereby generating a conditioned signal carrying the authentication response that is detectable by an authentication unit; performing a verification process using the authentication response carried by the conditioned signal; in response to performing the verification process: operably coupling a replaceable module to a user device in response to verifying the authentication response, the replaceable module and the user device, when operably coupled, forming a system that performs a process for depleting an item; or refraining from operably coupling the replaceable module to the user device in response to failing to verify the authentication response, wherein the replaceable module comprising: an element electrically coupled between a first line and a second line, the element forming a first current path between the first line and the second line; and a one-wire authentication element electrically in parallel with the element between the first line and the second line, the one-wire authentication element forming a second current path between the first line and the second line, the one-wire authentication element to provide an authentication response, wherein the replaceable module to divide a first current into a second current along the first current path and a third current along the second current path and wherein the one-wire authentication element to modulate the first current utilizing the third current. ### Claim 19 (depends on 18) The method of claim 18, comprising providing an authentication challenge, wherein performing the verification process comprises determining whether to verify the authentication response based on the authentication challenge. ### Claim 20 (depends on 18) The method of claim 18, wherein the conditioning the first signal carrying the authentication response comprises: removing an offset present in the first signal; obtaining a filtered signal by filtering the first signal; obtaining an amplified signal by amplifying the filtered signal; and obtaining a digital signal by waveform shaping the amplified signal. ### Claim 21 A method dividing, via a replaceable module, a first current into a second current along a first current path and a third current along a second current path, wherein the first current path is formed by an element electrically coupled between a first line and a second line, wherein a one-wire authentication element electrically in parallel with the element between the first line and the second line is forming the second current path; and providing an authentication response from the one-wire authentication element to the replaceable module via modulation of the first current with the third current.