US Patent 10430153 Fast-resume audio playback

Audio content may be played back in synchrony with a member of a synchrony group based on playback timing information. While synchronously playing back the audio content, the playback timing information may be transmitted to the member of the synchrony group. The transmitted playback timing information may comprise a first timestamp. In response to a pause command, the synchronous playback may be paused prior to a time indicated by the first timestamp and a second timestamp. While the synchronous playback is paused and in response to a resume command, the member of the synchrony group may be instructed to update the first timestamp based on a new start time indicative of when the synchronous playback is to be resumed and update the second timestamp such that the updated second timestamp is synchronized with the updated first timestamp. The synchronous playback may be resumed based on the updated second timestamp.