(19)

(11)

EP 0 500 704 A1

(12)

(43) Date of publication: 02.09.1992 Bulletin 1992/36 (21) Application number: 90917130.0 (22) Date of filing: 05.11.1990

(51) International Patent Classification (IPC):  H04N 5/ 46( . ) H04N 7/ 015( . ) H04N 11/ 24( . ) H04N 7/ 00( . ) H04N 11/ 00( . ) (86) International application number: PCT/US1990/006394 (87) International publication number: WO 1991/007063 (16.05.1991 Gazette 1991/11)

(84) Designated Contracting States: DE GB IT (30) Priority: 06.11.1989 US 19890435227 22.12.1989 GB 19890029143 16.04.1990 US 19900509384 (71) Applicant: GENERAL ELECTRIC COMPANY Princeton, New Jersey 08540 (US)	(72) Inventors: ISNARDI, Michael, Anthony Plainsboro, NJ 08536 (US) FUHRER, Jack, Selig Princeton Junction, NJ 08550 (US) KOSLOV, Joshua, Lawrence East Windsor, NJ (US) GIBSON, James, John Princeton, NJ 08540 (US) (74) Representative: Pratt, Richard Wilson  London Patent Operation G.E. Technical Services Co. Inc. Essex House 12/13 Essex Street London WC2R 3AA London WC2R 3AA (GB)