Hmm, wonder if Sony's patent and Apples patent are conflicting?
Apple's patent:
http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1=%2220070103454%22.PGNR.&OS=DN/20070103454&RS=DN/20070103454
Sony's Patent...