×

Audio synchronization among playback devices using offset information

  • US 9,538,300 B2
  • Filed: 02/11/2016
  • Issued: 01/03/2017
  • Est. Priority Date: 01/27/2014
  • Status: Active Grant
First Claim
Patent Images

1. A first playback device comprising:

  • one or more processors; and

    memory having stored thereon instructions executable by the one or more processors to cause the first playback device to perform functions comprising;

    receiving, from a second playback device, data representing a first time, the first time corresponding to first audio data to be played by the first playback device as part of a synchrony group with the second playback device;

    determining a second time based on (i) the first time and (ii) a first offset between a clock of the first playback device and a clock of the second playback device;

    playing the first audio data at the second time according to the clock of the first playback device;

    after playing the first audio data, determining a second offset between the clock of the first playback device and the clock of the second playback device, wherein the second offset is different from the first offset; and

    replacing, in memory storage, data representing the first offset with data representing the second offset.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×