Patent 7668609 was granted and assigned to Creative technology on February, 2010 by the United States Patent and Trademark Office.
A method and apparatus for receiving digital audio data which does not require the recovery of a clock from the data. Instead, the digital audio data is sampled at a rate greater than a clock rate of the digital audio data. Appropriate transitions in the digital audio data are detected to allow reconstruction of digital values represented by the digital audio data.