Patent ID: 11876847
Assignee: D&M HOLDINGS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 10:
11. A method for synchronizing a second media rendering device with a first media rendering device comprising:
at a first time s1 sending by the second media rendering device a request for a current audio sample index of an audio stream from the first media rendering device;
at a second time s2 receiving by the second media rendering device a first current sample index value from the first media rendering device;
calculating by the second media rendering device a transmission latency based on s1 and s2;
estimating by the second media rendering device an updated first media rendering device internal sample index value based on the transmission latency and a sampling rate of the audio stream; and
setting by the second media rendering device a second media rendering device internal sample index to the updated first media rendering device internal sample index value,
wherein the second media rendering device internal sample index is a sample parameter referring to a sequential number used to identify an audio sample, and
wherein the second media rendering device internal sample index corresponds to a measure of time and is associated with an offset to a corresponding local playback buffer.