(19)

(11)

EP 1 190 580 A2

(12)

(88) Date of publication A3: 03.01.2002 (43) Date of publication: 27.03.2002 Bulletin 2002/13 (21) Application number: 00988106.1 (22) Date of filing: 15.12.2000

(51) International Patent Classification (IPC)7: H04Q 1/00 (86) International application number: PCT/US0034/191 (87) International publication number: WO 0145/430 (21.06.2001 Gazette 2001/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 15.12.1999 US 170801 P 27.10.2000 US 674217 (71) Applicant: American Holographic, Inc. Fitchburg, MA 01420 (US)	(72) Inventors: MIKES, Thomas Ashby, MA 01431 (US) XIANG, Lian, Qin Acton, MA 01720 (US) (74) Representative: Schoppe, Fritz, Dipl.-Ing.  Patentanwälte Schoppe, Zimmermann, Stöckeler & Zinkler,Postfach 71 08 67 81458 München 81458 München (DE)