(19)

(11)

EP 0 774 194 A1

(12)

(43) Date of publication: 21.05.1997 Bulletin 1997/21 (21) Application number: 95927808.0 (22) Date of filing: 31.07.1995

(51) International Patent Classification (IPC):  G02B 27/ 01( . ) H04N 5/ 225( . ) G11B 31/ 00( . ) G02B 27/ 00( . ) (86) International application number: PCT/GB1995/001811 (87) International publication number: WO 1996/004750 (15.02.1996 Gazette 1996/08)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 03.08.1994 GB 19940015660 (71) Applicant: LAM, David Choon Sen Finchley, London N3 (GB)	(72) Inventor: LAM, David Choon Sen Finchley, London N3 (GB) (74) Representative: Shaw, Laurence  5th Floor, Metropolitan House, 1 Hagley Road, Edgbaston Birmingham B16 8TG Birmingham B16 8TG (GB)