Patent ID: 9733891
Date: 2017-08-15
CPC Classifications: G05B,G06F,G11B,H03G,H04H,H04J,H04L,H04N,H04R,H04W,H05K

Claim:
1. A method comprising: receiving, by a first playback device from a network device configured to control the first playback device and communicatively coupled to the first playback device over a local area network (LAN), after receiving the first control information, (i) obtaining, via a network interface from the first audio information source, first audio information; (ii) transmitting, via the network interface of the first playback device to a second playback device, the first audio information, playback timing information associated with the first audio information, and device clock information of the first playback device; and (iii) playing back the first audio information in synchrony with the second playback device by using the playback timing information associated with the first audio information and the device clock information of the first playback device to play back the first audio information, wherein the first and second playback devices remain independently clocked during synchronous playback of the first audio information; and after receiving the second control information, obtaining, via the network interface from the second audio information source, second audio information.