# US 2017/0255265 A1 · Gesture feedback > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0255265 A1 - Document ID: US20170255265A1 - Status: Published application - Kind: A1 - Application number: 15/449,735 - Filed: 2017-03-03 - Published: 2017-09-07 - Earliest claimed: 2016-03-04 - Assignees: NXP B.V. - Applicants: NXP B.V. - Inventors: Srikanth Dandamudi; Harish Dixit - Web page: https://patentgrep.com/patent/US20170255265A1 ## CPC - G06F 3/016: {Input arrangements with force or tactile feedback as computer generated output to the user} - G06F 1/163: {Wearable computers, e.g. on a belt} - G06F 3/014: {Hand-worn input/output arrangements, e.g. data gloves} - G06F 3/017: {Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883)} - G06F 3/046: by electromagnetic means - H04B 5/24: Inductive coupling - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - G06F 2203/0331: Finger worn pointing device - H04W 4/21: for social networking applications - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A gesture recognition device (100) for recognising gestures made by a user is disclosed. The device comprises a gesture detector for detecting a gesture made be a user and a gesture analysis block, the gesture analysis block comprising a memory configured to store known gestures, and a pattern recognition block configured to associate a gesture detected by the gesture detector with a known gesture stored in the memory. The device (100) further comprises a magnetic field generator for interacting with a wearable tag (200), the magnetic field generator configured to provide a magnetic force (202) on the wearable tag (200) when a particular gesture is recognised by the gesture analysis block. ## Claims ### Claim 1 A gesture recognition device for recognising gestures made by a user, the device comprising: a gesture detector for detecting a gesture made be a user; a gesture analysis block comprising: a memory configured to store known gestures; and a pattern recognition block configured to associate a gesture detected by the gesture detector with a known gesture stored in the memory; and a magnetic field generator for interacting with a wearable tag, the magnetic field generator configured to provide a magnetic force on the wearable tag when a particular gesture is recognised by the gesture analysis block. ### Claim 2 (depends on 1) The device of claim 1, wherein the gesture detector comprises an antenna for transmitting and detecting electromagnetic radiation, and wherein the gesture detector is operable to detect electromagnetic radiation reflected from a user. ### Claim 3 (depends on 2) The device of claim 2, wherein the gesture detector comprises an array of antennae for transmitting and detecting electromagnetic radiation. ### Claim 4 (depends on 2) The device of claim 2, wherein the antenna or antennae are operable to transmit and receive radio waves in a near field regime, and wherein the device further comprises a near field communication (NFC) reader configured to transmit and receive NFC signals using the antenna or at least one of the antennae. ### Claim 5 (depends on 1) The device of claim 1, wherein the gesture detector comprises a digital camera. ### Claim 6 (depends on 1) The device of claim 1, wherein the magnetic field generator comprises a permanent magnet. ### Claim 7 (depends on 2) The device of claim 2, wherein the magnetic field generator is configured to apply a DC current to the antenna or to at least one of the antennae in order to generate a magnetic field. ### Claim 8 (depends on 7) The device of claim 7, wherein the device is operable to separate transmission of electromagnetic radiation from generation of the magnetic field using time-domain multiplexing or field switching. ### Claim 9 (depends on 1) A gesture recognition system comprising: a wearable tag suitable to be worn by a user of the system; and a gesture recognition device according to claim 1. ### Claim 10 (depends on 9) The system of claim 9, wherein the wearable tag comprises a permanent magnet. ### Claim 11 (depends on 9) The system of claim 9, wherein the wearable tag comprises an electromagnet, and wherein the system further comprises a power source operable to power the electromagnet. ### Claim 12 (depends on 9) The system of claim 9, wherein the wearable tag comprises an antenna and a microprocessor configured to communicate with the gesture recognition device using NFC signals. ### Claim 13 A method of providing a sensory feedback to a user of a gesture recognition device, the method comprising: detecting a gesture made by a user with a gesture detector of the device; recognising the gesture by associating the detected gesture with known gestures using a gesture analysis block of the device; generating a magnetic field with a magnetic field generator of the device in response to recognising a particular gesture, in order to provide a magnetic force on a wearable magnetic tag worn by the user. ### Claim 14 (depends on 13) The method of claim 13, wherein the step of detecting a gesture made by the user comprises: transmitting electromagnetic radiation from an antenna of the device; and detecting electromagnetic radiation that is reflected from the user. ### Claim 15 (depends on 14) The method of claim 14, wherein the steps of transmitting electromagnetic radiation and generating the magnetic field are separated using time domain multiplexing or field switching techniques.