http://www.tracecenter.org/docs/ir_intro/ir_intro.htm

Multi-mode infrared input/output interface
http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-adv.htm&r=5&f=G&l=50&d=CR96&S1=5,546,211.UREF.&OS=ref/5,546,211&RS=REF/5,546,211

Method and apparatus for multi-mode infrared data transmission
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,684,871.WKU.&OS=PN/5,684,871&RS=PN/5,684,871

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