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- Apple: Nike + iPod
http://www.apple.com/ipod/nike/
Gaudet, Paul J. et al. "Measuring Foot Contact Time and Foot Loft Time of a Person in Locomotion."
U.S. Patent 6,018,705. (2/8/2007)
http://www.freepatentsonline.com/6018705.html?
s_id=c06d1cc665bfe0de97fffe2a37d4add4
Nike. "Question: Do I need to buy a new iPod?" 10/18/2006 (2/8/2007)
http://forums.nike.com/thread.jspa?threadID=90&tstart=15
Nike: Nike + iPod User's Guide
http://www.nike.com/nikeplus/v1/pdf/English.pdf
Nike: Nike+
http://www.nike.com/nikeplus/
PCB Piezoelectronics. "Introduction to Piezoelectric Accelerometers." (2/8/2007).
http://www.pcb.com/techsupport/tech_accel.php
Saponas, T. Scott et al. "Devices that Tell on You: The Nike + iPod Sport Kit."
University of Washington. 11/30/2006 (2/8/2007).
http://www.cs.washington.edu/research/systems/
nikeipod/tracker-paper.pdf
SparkFun Electronics. "Nike + iPod Dissection." 1/13/2007 (2/8/2007).
http://www.sparkfun.com/commerce/present.php?p=Nike_iPod-Internals
St. Onge, Jeff. "Apple, Nike Sued Over Sport Shoe iPod Device Patent."
Bloomberg. 2/2/2007 (2/8/2007).
http://www.bloomberg.com/apps/news?pid=conewsstory&
refer=conews&tkr=AAPL:US&sid=a_AKjlGqMjVg
Weber, Manfred. "Piezoelectric Principle." (2/8/2007).
http://www.mmf.de/piezoelectric_principle.htm