(19)

(11)

EP 1 687 791 A1

(12)

(43) Date of publication: 09.08.2006 Bulletin 2006/32 (21) Application number: 04768952.6 (22) Date of filing: 20.10.2004

(51) International Patent Classification (IPC):  G09B 29/04(2006.01) (86) International application number: PCT/GB2004/004426 (87) International publication number: WO 2005/045788 (19.05.2005 Gazette 2005/20)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 23.10.2003 GB 0324687 (71) Applicant: Brittain, Stephen Alexander London SW4 7RP (GB)	(72) Inventor: Brittain, Stephen Alexander London SW4 7RP (GB) (74) Representative: Stanley, Michael Gordon  Michael Stanley & Co., P.O. Box 270 Banbury, Oxfordshire OX15 6YL Banbury, Oxfordshire OX15 6YL (GB)