(19)

(11)

EP 0 576 597 A1

(12)

(43) Date of publication: 05.01.1994 Bulletin 1994/01 (21) Application number: 92909874.0 (22) Date of filing: 19.03.1992

(51) International Patent Classification (IPC):  H04H 1/ 00( . ) H04N 7/ 10( . ) H04H 60/ 22( . ) H04H 60/ 97( . ) H04H 60/ 39( . ) H04N 7/ 173( . ) H04H 60/ 66( . ) H04N 7/ 16( . ) (86) International application number: PCT/US1992/002211 (87) International publication number: WO 1992/017027 (01.10.1992 Gazette 1992/25)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 19.03.1991 US 19910671532 (71) Applicant: SCIENTIFIC ATLANTA, INC. Atlanta, GA 30348 (US)	(72) Inventor: McMULLAN, Jay, C. Doraville, GA 30360 (US) (74) Representative: Bosotti, Luciano, et al  c/o JACOBACCI & PERANI S.p.A. Corso Regio Parco, 27 I-10152 Torino I-10152 Torino (IT)