# US 2022/0046568 A1 · Noise responsive near-field communications device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0046568 A1 - Document ID: US20220046568A1 - Status: Published application - Kind: A1 - Application number: 16/987,424 - Filed: 2020-08-07 - Published: 2022-02-10 - Earliest claimed: 2020-08-07 - Assignees: NXP B.V. - Applicants: NXP B.V. - Inventors: Anthony Kerselaers; Liesbeth Gommé - Web page: https://patentgrep.com/patent/US20220046568A1 ## CPC - H04W 56/0015: {one node acting as a reference for the others} - H04B 5/22: Capacitive coupling - H04B 5/263: {Multiple coils at either side} - H04B 5/70: specially adapted for specific purposes - H04B 17/345: Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract One example discloses a near-field wireless communications device, including: a near-field antenna; a near-field noise detector coupled to receive a first set of near-field signals from the near-field antenna; wherein the near-field noise detector is configured to identify a set of attributes of the near-field noise within the first set of near-field signals; a controller configured to generate at least one synchronization signal based on at least one of the attributes of the near-field noise; and a transmitter circuit configured to transmit a second set of near-field signals in response to the synchronization signal. ## Claims ### Claim 1 A near-field wireless communications device, comprising: a near-field antenna; a near-field noise detector coupled to receive a first set of near-field signals from the near-field antenna; wherein the near-field noise detector is configured to identify a set of attributes of the near-field noise within the first set of near-field signals; a controller configured to generate at least one synchronization signal based on at least one of the attributes of the near-field noise; and a transmitter circuit configured to transmit a second set of near-field signals in response to the synchronization signal. ### Claim 2 (depends on 1) The device of claim 1: wherein the synchronization signal includes a timing command; and wherein the transmitter circuit is configured to transmit the second set of near-field signals at a time specified in the timing command. ### Claim 3 (depends on 1) The device of claim 1: wherein the synchronization signal includes a timing command; wherein the second set of near-field signals are divided into a set of data packets; and wherein the timing command specifies a time that at least one of the data packets in the set of data packets is to be transmitted. ### Claim 4 (depends on 1) The device of claim 1: wherein the synchronization signal includes a data packet length command; wherein the second set of near-field signals are divided into a set of data packets; and wherein the transmitter circuit is configured to set a length of at least one of the data packets to a data packet length specified in the data packet length command. ### Claim 5 (depends on 1) The device of claim 1: wherein the synchronization signal includes both a timing command and a data packet length command; wherein the second set of near-field signals are divided into a set of data packets; wherein the transmitter circuit is configured to set a length of at least one of the data packets to a data packet length specified in the data packet length command; and wherein the timing command specifies a time that at least one of the data packets in the set of data packets is to be transmitted. ### Claim 6 (depends on 1) The device of claim 1: wherein the set of attributes correspond to a quasi-periodic pattern in the near-field noise. ### Claim 7 (depends on 1) The device of claim 1: wherein the controller is configured to statistically characterize the set of attributes in the near-field noise over a predetermined time period. ### Claim 8 (depends on 1) The device of claim 1: wherein the set of attributes of the near-field noise includes a burst portion and a quiescent portion. ### Claim 9 (depends on 8) The device of claim 8: wherein the controller is configured to command the transmitter circuit to begin transmission of the second set of near-field signals on the near-field antenna after a predetermined delay following an end of the burst portion of the near-field noise. ### Claim 10 (depends on 9) The device of claim 9: wherein the controller is configured to set the predetermined delay based on either a mean, median, or standard deviation of a duration of the burst portion of the near-field noise. ### Claim 11 (depends on 8) The device of claim 8: wherein the controller is configured to command the transmitter circuit to begin transmission of the second set of near-field signals on the near-field antenna after a predetermined delay following a start of the burst portion of the near-field noise. ### Claim 12 (depends on 8) The device of claim 8: wherein the controller is configured to command the transmitter circuit to set a data packet length of the second set of near-field signals based on either a mean, median, or standard deviation of a duration of the quiescent portion of the near-field noise. ### Claim 13 (depends on 12) The device of claim 12: wherein the data packet length varies as either the burst portion or the quiescent portion of the near-field noise signal vary. ### Claim 14 (depends on 1) The device of claim 1: wherein the near-field antenna includes an electric (E) near-field antenna and a magnetic (H) near-field antenna; wherein the near-field noise includes near-field electric noise; and wherein the controller is configured to generate the synchronization signal based only on the pattern in the near-field electric noise. ### Claim 15 (depends on 1) The device of claim 1: wherein the near-field antenna includes an electric (E) near-field antenna and a magnetic (H) near-field antenna; wherein the near-field noise includes near-field magnetic noise; and wherein the controller is configured to generate the synchronization signal based only on the pattern in the near-field magnetic noise. ### Claim 16 (depends on 1) The device of claim 1: wherein the near-field antenna includes an electric (E) near-field antenna and a magnetic (H) near-field antenna; wherein the near-field noise includes both near-field electric noise and near-field magnetic noise; and wherein the controller is configured to generate the synchronization signal based on the pattern in both the near-field electric noise and the near-field magnetic noise. ### Claim 17 (depends on 1) The device of claim 1: wherein the near-field antenna includes an electric (E) near-field antenna and a magnetic (H) near-field antenna; and wherein the controller is configured to modulate a ratio of energy sent to and/or received from each of the electric and magnetic antennas in response to a ratio of near-field electric noise and near-field magnetic noise. ### Claim 18 (depends on 1) The device of claim 1: wherein the device is embedded in at least one of: a smart phone, a smart watch, a sensor, a medical sensor, an earbud, or an audio device. ### Claim 19 (depends on 1) The device of claim 1: wherein the near-field antenna includes at least one conductive surface; and wherein the conductive surface is configured to carry non-propagating quasi-static near-field electric induction signals. ### Claim 20 (depends on 1) The device of claim 1: wherein the near-field antenna includes at least one coil; and wherein the coil is configured to carry non-propagating quasi-static near-field magnetic induction signals. ### Claim 21 A near-field wireless communications device, comprising: a near-field antenna; a near-field noise detector coupled to receive a first set of near-field signals from the near-field antenna; wherein the near-field noise detector is configured to identify a set of attributes of the near-field noise within the first set of near-field signals; a controller configured to generate at least one synchronization signal based on at least one of the attributes of the near-field noise; and a transmitter circuit configured to transmit a second set of near-field signals on the near-field antenna in response to the synchronization signal.