# US 9,883,298 B2 · Method and apparatus for communication between hearing assistance devices in a bluetooth network > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,883,298 B2 - Document ID: US9883298B2 - Status: Granted - Kind: B2 - Application number: 15/362,455 - Filed: 2016-11-28 - Published: 2017-06-15 - Granted: 2018-01-30 - Earliest claimed: 2013-07-08 - Assignees: Starkey Laboratories, Inc. - Applicants: Starkey Laboratories, Inc. - Inventors: Jeffrey Paul Solum - Web page: https://patentgrep.com/patent/US9883298B2 ## CPC - H04R 25/554: {using a wireless connection, e.g. between microphone and amplifier or using Tcoils} - H04M 1/72412: using two-way short-range wireless interfaces - H04R 25/558: {Remote control, e.g. of amplification, frequency} - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04R 2225/55: Communication between hearing aids and external devices via a network for data exchange - H04W 84/22: with access to wired networks - H04W 88/04: adapted for relaying to or from another terminal or user - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A hearing assistance system provides for wireless communication between hearing assistance devices that are in a Bluetooth connection with a host device. In various embodiments, during a Bluetooth connection interval, one or more time slots are used for communication between the host device and one or more of the hearing assistance devices, while one or more additional time slots are reserved for communication between the hearing assistance devices. ## Claims ### Claim 1 A system including a master device and a plurality of slave devices, the system comprising: a first hearing assistance device configured to be a first slave device of the plurality of slave devices, to perform wireless communication with the master device using a Bluetooth protocol during one or more first time slots in a Bluetooth connection interval, and to perform wireless communication with a second slave device of the plurality of slave devices during one or more second time slots of the Bluetooth connection interval, the one or more second time slots non-overlapping with the one or more first time slots. ### Claim 2 (depends on 1) The system of claim 1, wherein the first hearing assistance device comprises a control circuit configured to receive from the master device assignment of the one or more second time slots and to control the wireless communication with the second slave device using the one or more second time slots assigned by the master device. ### Claim 3 (depends on 2) The system if claim 2, wherein the control circuit is further configured to receive from the master device allocation of one or more frequency channels for the wireless communication with the second slave device and to control the wireless communication with the second slave device using the one or more frequency channels allocated by the master device. ### Claim 4 (depends on 1) The system of claim 1, wherein the first hearing assistance device comprises a control circuit configured to assign the one or more second time slots and to control the wireless communication with the second slave device using the assigned one or more second time slots. ### Claim 5 (depends on 4) The system of claim 4, wherein the slave control circuit is further configured to allocate one or more frequency channels for the wireless communication with the second slave device and to control the wireless communication with the second slave device using the allocated one or more frequency channels. ### Claim 6 (depends on 1) The system of claim 1, wherein the first hearing assistance device comprises a hearing aid. ### Claim 7 A system including a master device and a plurality of slave devices each configured to communicate with the master device using a Bluetooth protocol during one or more first time slots in a Bluetooth connection interval, the system comprising: a first hearing assistance device configured to be a first slave device of the plurality of slave devices and to perform wireless communication with a second slave device of the plurality of slave devices during one or more second time slots of the Bluetooth connection interval the one or more second time slots non-overlapping with the one or more first time slots, wherein the first hearing assistance device is configured to perform the wireless communication with the second slave device using the Bluetooth protocol or a proprietary protocol. ### Claim 8 (depends on 7) The system of claim 7, wherein the first hearing assistance device is configured to perform the wireless communication with the second slave device using a proprietary protocol. ### Claim 9 (depends on 1) The system of claim 1, further comprising a second hearing assistance device configured to be the second slave device. ### Claim 10 (depends on 9) The system of claim 9, wherein the first hearing assistance device and the second hearing assistance device are configured to perform wireless ear-to-ear communication with each other during the one or more second time slots. ### Claim 11 (depends on 10) The system of claim 10, wherein the first hearing assistance device and the second hearing assistance comprise a control circuit configured to assign the one or more second time slots based on the one or more first time slots and a predetermined timing sequence. ### Claim 12 (depends on 11) The system of claim 11, wherein the first hearing assistance device and the second hearing assistance device comprise a pair of left and right hearing aids. ### Claim 13 A method for wireless communication in a hearing assistance system including a master device and a plurality of slave devices each configured to communicate with the master device via a Bluetooth wireless communication link, the method comprising: configuring a first hearing assistance device to function as a first slave device of the plurality of slave devices; performing wireless communication between the first hearing assistance device and the master device using a Bluetooth protocol during one or more first time slots in a Bluetooth connection interval; and performing wireless communication between the first hearing assistance device and a second slave device of the plurality of slave devices during one or more second time slots of the Bluetooth connection interval, the one or more second time slots non-overlapping with the one or more first time slots. ### Claim 14 (depends on 13) The method of claim 13, further comprising configuring a second hearing assistance device to function as the second slave device of the plurality of slave devices, and wherein performing the wireless communication between the first hearing assistance device and the second slave device comprises performing ear-to-ear communication between the first and second hearing assistance devices. ### Claim 15 (depends on 14) The method of claim 14, wherein performing the ear-to-ear communication between the first and second hearing assistance devices comprises performing the ear-to-ear communication between a left hearing aid and a right hearing aid. ### Claim 16 (depends on 13) The method of claim 13, wherein configuring the first hearing assistance device comprises a hearing aid. ### Claim 17 (depends on 13) The method of claim 13, wherein performing the wireless communication between the first hearing assistance device and the second slave device comprises: receiving from the master device assignment of the one or more second time slots; and performing the wireless communication with the second slave device using the received assignment of the one or more second time slots. ### Claim 18 (depends on 17) The method of claim 17, wherein performing the wireless communication between the first hearing assistance device and the second slave device further comprises: receiving from the master device allocation of one or more frequency channels; and performing the wireless communication with the second slave device using the received allocation of the one or more frequency channels. ### Claim 19 (depends on 13) The method of claim 13, wherein performing the wireless communication between the first hearing assistance device and the second slave device comprises: assigning the one or more second time slots using the first hearing assistance device; and performing the wireless communication with the second slave device using the assigned one or more second time slots. ### Claim 20 (depends on 19) The method of claim 19, wherein performing the wireless communication between the hearing assistance device and the second slave device further comprises: allocate one or more frequency channels using the first hearing assistance device; and performing the wireless communication with the second slave device using the allocated one or more frequency channels.