Bloomberg reports that THX, the sound innovation company that traces its origins to George Lucas and Lucasfilm 30 years ago, has filed suit against Apple in U.S. District Court over alleged infringement of a speaker patent by the iMac, iPhone and iPad product lines.THX holds a 2008 patent for a speaker unit that can boost sound output and attach to computers or flat-screen televisions, according to a complaint filed yesterday in federal court in San Jose, California.THX is claiming that the infringement has caused it "monetary damage and irreparable harm" and is seeking either an order to stop the alleged infri
