(19)

(11)

EP 1 874 477 A2

(12)

(88) Date of publication A3: 15.11.2007 (43) Date of publication: 09.01.2008 Bulletin 2008/02 (21) Application number: 06750520.6 (22) Date of filing: 18.04.2006

(51) International Patent Classification (IPC):  B03C 3/00(2006.01) (86) International application number: PCT/US2006/014499 (87) International publication number: WO 2006/113677 (26.10.2006 Gazette 2006/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 19.04.2005 US 672821 P 19.04.2005 US 673013 P (71) Applicant: Sarnoff Corporation Princeton, New Jersey 08540 (US)	(72) Inventor: PLETCHER, Timothy, Allen Easthampton, New Jersey 08060 (US) (74) Representative: Beresford, Keith Denis Lewis et al BERESFORD & Co. 16 High Holborn London WC1V 6BX London WC1V 6BX (GB)