# US 2019/0246012 A1 · System and method for synchronizing audio and video signals for a listening system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246012 A1 - Document ID: US20190246012A1 - Status: Published application - Kind: A1 - Application number: 16/241,198 - Filed: 2019-01-07 - Published: 2019-08-08 - Earliest claimed: 2014-07-28 - Assignees: Starkey Laboratories, Inc. - Applicants: Starkey Laboratories, Inc. - Inventors: Brian Fischer - Web page: https://patentgrep.com/patent/US20190246012A1 ## CPC - H04N 5/067: Arrangements or circuits at the transmitter end - H04N 5/44: Receiver circuitry {for the reception of television signals according to analogue transmission standards} (H04N5/14 takes precedence) - H04N 5/602: {for digital sound signals} - H04N 21/43079: {of additional data with content streams on multiple devices} - H04N 21/43637: {involving a wireless protocol, e.g. Bluetooth®, RF or wireless LAN [IEEE 802.11] (arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114)} - H04R 25/00: Electric hearing aids - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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) ## Abstract Disclosed herein, among other things, are systems and methods for synchronizing audio and video signals for a listening system. One aspect of the present subject matter includes a method including receiving an audio signal and a video signal from an external device. The audio signal is processed and transmitted to a hearing assistance device having a wearer. In various embodiments, the video signal is transmitted to a video display using a delay such that the audio signal and the video signal are synchronized for the wearer. ## Claims ### Claim 1 (canceled) ### Claim 2 A system, comprising: a listening device; and a synchronization device, including: a wireless input configured to receive an audio signal and a video signal from an audio/video source; a bi-directional wireless communication link to the listening device; a processor configured to process the audio signal and convert the audio signal into a wireless signal and transmit the wireless signal to the listening device using the bi-directional wireless communication link; and a wireless output configured to transmit the video signal to a video display using a delay based on a wireless signal delay calculated using a received acknowledgement from the listening device, such that the wireless signal and the video signal are synchronized for the listening device, and configured to transmit the audio signal to the video display using the delay to synchronize the audio signal and video signal to the display. ### Claim 3 (depends on 2) The system of claim 2, wherein the synchronization device is an assistive listening device (ALD). ### Claim 4 (depends on 2) The system of claim 2, wherein the video display includes a television. ### Claim 5 (depends on 2) The system of claim 2, wherein the listening device includes a hearing assistance device. ### Claim 6 (depends on 5) The system of claim 5, wherein the hearing assistance device includes a hearing ### Claim 7 (depends on 6) The system of claim 6, wherein the hearing aid includes an in-the-ear (ITE) hearing aid. ### Claim 8 (depends on 6) The system of claim 6, wherein the aid includes a behind-the-ear (BTE) hearing aid. ### Claim 9 (depends on 6) The system of claim 6, wherein the hearing aid includes an in-the-canal (ITC) hearing aid. ### Claim 10 (depends on 6) The system of claim 6, wherein the hearing aid includes a receiver-in-canal (RIC) hearing aid. ### Claim 11 (depends on 6) The system of claim 6, wherein the hearing aid includes a completely-in-the-canal (CIC) hearing aid. ### Claim 12 (depends on 6) The system of claim 6, wherein the hearing aid includes a receiver-in-the-ear (RITE) hearing aid. ### Claim 13 A method, comprising: receiving, using a synchronization device, an audio signal and a video signal from an audio/video source; processing, using the synchronization device, the audio signal and converting the audio signal into a wireless signal, and transmitting the wireless signal to a listening device using a time stamp; and transmitting, using the synchronization device, the video signal to a video display using a delay based on a wireless signal delay calculated by synchronizing clocks between the synchronization device and the listening device and using the time stamp, such that the wireless signal and the video signal are synchronized for the listening device; and transmitting, using the synchronization device, the audio signal to the video display using the delay to synchronize the audio signal and video signal to the display. ### Claim 14 (depends on 13) The method of claim 13, wherein synchronizing clocks includes using network clock synchronization based on IEEE 1588. ### Claim 15 (depends on 13) The method of claim 13, comprising transmitting the video signal to the video display such that the audio signal and the video signal are synchronized for all viewers of the video display. ### Claim 16 (depends on 13) The method of claim 13, wherein processing the audio signal includes encoding the audio signal over a first time period. ### Claim 17 (depends on 16) The method of claim 16, wherein the listening device in configured to decode the audio signal over a second time period. ### Claim 18 (depends on 17) The method of claim 17, wherein the delay is calculated using the first time, the second time, and a transmission time. ### Claim 19 (depends on 13) The method of claim 13, wherein the synchronization device is an assistive listening device (ALD). ### Claim 20 (depends on 13) The method of claim 13, wherein the video display includes a television. ### Claim 21 (depends on 13) The method of claim 13, wherein the listening device includes a hearing aid.