09733891 cites 956 patents.

A system is described for maintaining synchrony of operations among a plurality of devices that have independent clocking arrangements. The system includes a task distribution device that distributes tasks to a synchrony group comprising a plurality of devices that are to perform the tasks distributed by the task distribution device in synchrony. The task distribution device distributes each task to the members of the synchrony group over a network. Each task is associated with a time stamp that indicates a time, relative to a clock maintained by the task distribution device, at which the members of the synchrony group are to execute the task. Each member of the synchrony group periodically obtains from the task distribution device an indication of the current time indicated by its clock, determines a time differential between the task distribution device's clock and its respective clock and determines therefrom a time at which, according to its respective clock, the time stamp indicates that it is to execute the task.

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Application Number
Publication Number
9733891 (B2)
Application Date
April 1, 2016
Publication Date
August 15, 2017
Nicholas A J Millington
Santa Barbara
McDonnell Boehnen Hulbert & Berghoff
H04W 84/20
H04W 56/00
H04R 27/00
H04R 3/12
H04N 21/436
H04N 21/43
H04N 9/79
H04N 5/04
H04L 29/08
H04L 29/06
H04L 12/28
H04J 3/06
H04H 20/26
H04H 20/10
H03G 3/20
H03G 3/00
G11B 20/10
G06F 17/30
G06F 17/00
G06F 3/0484
G06F 3/0482
G06F 3/048
G06F 1/12
G06F 1/00
G05B 15/02
G06F 3/16
G06F 15/16
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