A CLASS action has started in the USA alleging that ATI Technologies' graphics cards don't support HDCP although it claims they do.A filing made by Stanley Batsalkin and Kenny Vargas on behalf of themselves and others in a San Jose district court alleges ATI Technologies, ATI Technologies Systems, ATI Research Silicon Valley, ATI Research and 200 "John Does" breached state consumer protection statutes, express warranty statures, implied warranty statutes, negligent misrepresentation common laws and unjust enrichment common laws.The plaintiffs allege that since "at least 2003",ATI said many of its graphics cards support High-bandwidth Digital Content Protection (HDCP). That spec is part of the Windows Vista operating system.But, claim the plaintiffs, if video cards or monitors aren't designed to the right specifications, the "new content protection scheme will not allow high definition audiovisual content to be clearly transmitted".