# US 2017/0288443 A1 · Multifunction battery charging and haptic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288443 A1 - Document ID: US20170288443A1 - Status: Published application - Kind: A1 - Application number: 15/086,131 - Filed: 2016-03-31 - Published: 2017-10-05 - Earliest claimed: 2016-03-31 - Assignees: Intel Corporation - Applicants: Intel Corporation - Inventors: Mikko Kursula; Kalle I. Makinen; Esa Saunamaki - Web page: https://patentgrep.com/patent/US20170288443A1 ## CPC - H02J 7/751: {concerning the insertion or the connection of the batteries} - H02J 50/12: of the resonant type - H04B 1/40: Circuits - H04B 5/79: for data transfer in combination with power transfer - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 2207/40: adapted for charging from various sources, e.g. AC, DC or multivoltage - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION ## Abstract Techniques for implementing a multifunction device with battery charging and haptic feedback capabilities are described. An example of an electronic device includes a multifunction charger and a control circuitry configured to activate one of a plurality of available operating modes of the multifunction charger. The plurality of operating modes includes a wireless charging mode and a haptic feedback mode. ## Claims ### Claim 1 An electronic device comprising: a processor; a memory device comprising instructions to be executed by the processor; a battery to provide electrical power to the processor and the memory device; a multifunction charger; and control circuitry configured to activate one of a plurality of available operating modes of the multifunction charger, wherein the plurality of operating modes of the multifunction charger comprises a wireless charging mode and a haptic feedback mode. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the plurality of available operating modes of the multifunction charger comprises a vibrational energy harvesting mode. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the multifunction charger comprises: an enclosure; a first conductive winding fixedly disposed on an inner wall of the enclosure; a magnetic core suspended within the enclosure by a spring. ### Claim 4 (depends on 3) The electronic device of claim 3, wherein, to activate wireless charging mode, the control circuitry is to conductively couple the first conductive winding to a battery charging circuit. ### Claim 5 (depends on 3) The electronic device of claim 3, wherein, to activate haptic feedback mode, the control circuitry is to conductively couple the first conductive winding to an AC signal source that provides a haptic feedback waveform. ### Claim 6 (depends on 3) The electronic device of claim 3, wherein the magnetic core comprises a permanent magnet. ### Claim 7 (depends on 3) The electronic device of claim 3, wherein the multifunction charger comprises a second conductive winding surrounding the magnetic core. ### Claim 8 (depends on 7) The electronic device of claim 7, wherein, to activate wireless charging mode, the control circuitry is to conductively couple the first conductive winding and the second conductive winding to a battery charging circuit. ### Claim 9 (depends on 7) The electronic device of claim 7, wherein, to activate haptic feedback mode, the control circuitry is to: conductively couple the first conductive winding to an AC signal source that provides a haptic feedback waveform; and conductively couple the second conductive winding to a source of magnetizing current. ### Claim 10 (depends on 7) The electronic device of claim 7, wherein the plurality of available operating modes of the multifunction charger comprises a vibrational energy harvesting mode, and to activate vibrational energy harvesting mode, the control circuitry is to: conductively couple the first conductive winding to a battery charging circuit; and conductively couple the second conductive winding to a source of magnetizing current. ### Claim 11 A multifunction charger with a plurality of operating modes, comprising: an enclosure; a first conductive winding fixedly disposed on an inner wall of the enclosure; a magnetic core suspended inside the enclosure by a spring; a second conductive winding surrounding the magnetic core; wherein a resonant frequency of the magnetic core and the spring or a plurality of springs is tuned for haptic effects and vibrational energy harvesting. ### Claim 12 (depends on 11) The multifunction charger of claim 11, comprising control circuitry configured to activate one of a plurality of operating modes of the multifunction charger, wherein the plurality of operating modes of the multifunction charger comprises a wireless charging mode and a haptic feedback mode. ### Claim 13 (depends on 12) The multifunction charger of claim 12, wherein, to activate wireless charging mode, the control circuitry is to conductively couple the first conductive winding and the second conductive winding to a battery charging circuit. ### Claim 14 (depends on 12) The multifunction charger of claim 12, wherein, to activate haptic feedback mode, the control circuitry is to: conductively couple the first conductive winding to an AC signal source that provides a haptic feedback waveform; and conductively couple the second conductive winding to a source of magnetizing current. ### Claim 15 (depends on 11) The multifunction charger of claim 11, wherein the plurality of operating modes of the multifunction charger comprises a vibrational energy harvesting mode. ### Claim 16 (depends on 15) The multifunction charger of claim 15, wherein to activate the vibrational energy harvesting mode, the control circuitry is to: conductively couple the first conductive winding to a battery charging circuit; and conductively couple the second conductive winding to a source of magnetizing current. ### Claim 17 (depends on 11) The multifunction charger of claim 11, wherein the enclosure of the multifunction charger comprises a ferromagnetic material or plurality of materials part of which can be ferromagnetic. ### Claim 18 A method of operating a multifunction charger comprising a stationary winding and a movable winding, the movable winding disposed around a magnetic core, the method comprising: identifying a mode from a plurality of available operating modes comprising a wireless charging mode, a haptic feedback mode, and a vibrational energy harvesting mode; and selecting a coupling configuration to implement the identified mode. ### Claim 19 (depends on 18) The method of claim 18, wherein the identified mode is the wireless charging mode and selecting the coupling configuration comprises conductively coupling the stationary winding and the movable winding to a battery charging circuit. ### Claim 20 (depends on 19) The method of claim 19, wherein identifying the mode comprises detecting a communication signal from a wireless charging transmitter. ### Claim 21 (depends on 19) The method of claim 19, wherein identifying the mode comprises detecting a magnetic field generated by a wireless charging transmitter. ### Claim 22 (depends on 18) The method of claim 18, wherein the identified mode is the haptic feedback mode and selecting the coupling configuration comprises: conductively coupling the stationary winding to an AC signal source that provides a haptic feedback waveform; and conductively coupling the movable winding to a source of magnetizing current. ### Claim 23 (depends on 18) The method of claim 18, wherein the identified mode is the vibrational energy harvesting mode and selecting the coupling configuration comprises conductively coupling the stationary winding to a battery charging circuit; and conductively coupling the movable winding to a source of magnetizing current. ### Claim 24 (depends on 18) The method of claim 18, wherein identifying the mode comprises receiving a mode selection signal from a processor. ### Claim 25 (depends on 18) The method of claim 18, wherein identifying the mode comprises receiving a mode selection from a user.