(19)

(11)

EP 0 549 717 A1

(12)

(43) Date of publication: 07.07.1993 Bulletin 1993/27 (21) Application number: 91918571.0 (22) Date of filing: 18.09.1991

(51) International Patent Classification (IPC):  G09G 5/ 00( . ) G09G 5/ 04( . ) G09G 5/ 02( . ) H04N 5/ 66( . ) (86) International application number: PCT/US1991/006761 (87) International publication number: WO 1992/005537 (02.04.1992 Gazette 1992/08)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 21.09.1990 US 19900586506 19.11.1990 US 19900616178 23.04.1991 US 19910690531 (71) Applicant: PROXIMA CORPORATION San Diego, CA 92121 (US)	(72) Inventors: SHAPIRO, Leonid Lakeside, CA 92040 (US) SHAW, Robert Escondido, CA 92026 (US) FARWELL, Randall, S. San Diego, CA 92126 (US) HAUCK, Lane, T. San Diego, CA 92122 (US) (74) Representative: Spall, Christopher John  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)