(19)

(11)

EP 1 075 759 A1

(12)

(43) Date of publication: 14.02.2001 Bulletin 2001/07 (21) Application number: 99920146.0 (22) Date of filing: 29.04.1999

(51) International Patent Classification (IPC)7: H04N 1/413 (86) International application number: PCT/US9909/315 (87) International publication number: WO 9956/461 (04.11.1999 Gazette 1999/44)

(84) Designated Contracting States: DE FR GB SE (30) Priority: 29.04.1998 US 69364 (71) Applicant: Sensormatic Electronics Corporation Boca Raton, Florida 33431-0700 (US)	(72) Inventors: MacCORMACK, David, Ross San Diego, CA 92104 (US) NUNALLY, Patrick, O. Del Mar, CA 92014 (US) (74) Representative: Hafner, Dieter, Dr. Dipl.-Phys.  Ostendstrasse 132 90482 Nürnberg 90482 Nürnberg (DE)