(19)

(11)

EP 0 438 539 A1

(12)

(43) Date of publication: 31.07.1991 Bulletin 1991/31 (21) Application number: 90903677.0 (22) Date of filing: 06.02.1990

(51) International Patent Classification (IPC):  H04N 7/ 173( . ) (86) International application number: PCT/US1990/000684 (87) International publication number: WO 1990/009720 (23.08.1990 Gazette 1990/20)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 07.02.1989 US 19890307772 (71) Applicant: KRAVITZ, Steven D New York, NY 10028 (US)	(72) Inventor: KRAVITZ, Steven D New York, NY 10028 (US) (74) Representative: Berkenfeld, Helmut, Dipl.-Ing.  An der Schanz 2 03/3 D-50735 Köln D-50735 Köln (DE)