Patent ID: 11882533
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A third device for transmitting audio data in a short-range wireless communication system, the third device comprising:
a transmitter for transmitting a radio signal;
a receiver for receiving a radio signal; and
a processor operatively connected to the transmitter and the receiver;
wherein the processor is configured to control:
the transmitter to transmit, to at least one device, a first advertisement message for providing a broadcast audio data streaming service;
the transmitter to transmit, to the at least one device, a second advertisement message related to a synchronization of audio data output timing;
wherein the second advertisement message includes force delay information for synchronizing a timing at which the audio data is output from each of the at least one device; and
the transmitter to transmit, to the at least one device, the audio data,
wherein the audio data output timing of each of the at least one device is determined based on the force delay information,
wherein the presentation delay information is determined based on a specific time value range in which processing for the audio data is expected to be completed in all of the at least one device and a processing time for a video data related to the audio data of the third device, and
outputting the video data,
wherein a video data output timing of the third device is determined based on the presentation delay information,
wherein the audio data is output at a timing indicated by the presentation delay information regardless of when a processing for the audio data of each of the at least one device is completed, and
wherein the video data is output at the timing indicated by the presentation delay information regardless of when a processing for the video data of the third device is completed,
wherein a value of the presentation delay information is greater than a sum of (i) an audio data encoding time of the third device and (ii) an audio data transmission time from the third device to the at least one device, and less than a video data buffering time of the third device.