Patent ID: 8396133
Filing Date: 2013-03-12
Classification: H04H,H04N

Abstract:
1. A system for determining a drift between clocks of an encoder and a decoder comprising: a receiver configured to receive a plurality of frames, with each of the plurality of frames comprising one or more packets of data, wherein at least two of the packets of data each comprise an encoder timestamp; a controller configured to produce an interrupt upon the receiver receiving each of the plurality of frames; a first module configured to create a decoder timestamp for each of said at least two of the packets of data in response to the interrupt produced upon the receiver receiving the corresponding frame of the plurality of frames comprising the respective packet of data, using an arrival time of the frame, a duration of the frame, and a proportion of the frame that precedes the packet of data; and a second module configured to determine the drift by calculating a difference between the encoder timestamps and the decoder timestamps.