Patent ID: 7747447
Filing Date: 2010-06-29
Classification: G10L,H04H,H04J

Abstract:
1. A method of extracting digital audio data words from a serialized stream of digital audio data, comprising: constructing a timing window from an estimated bit time for said serialized stream of digital audio data, said timing window having a preamble sub-window and at least one data sub-window; extracting plural digital audio data words from said serialized stream of digital audio based upon the location of each transition in said serialized stream of digital audio data relative to said preamble sub-window and said at least one data sub-window of said timing window; each one of said extracted plural digital audio data words having a preamble identifiable by a combination of at least one transition located in said preamble sub-window of said timing window and at least one transition located in said at least one data sub-window of said timing window; wherein said bit time is estimated by averaging a plurality of data stream pulse lengths and the time separating a first set of successive identified transitions is a first measurement of said estimated bit time.