(19)
(11) EP 0 241 537 A1

(12)

(43) Date of publication:
21.10.1987 Bulletin 1987/43

(21) Application number: 86906579.0

(22) Date of filing: 09.10.1986
(51) International Patent Classification (IPC): 
G11B 7/ 003( . )
G11B 7/ 135( . )
 G11B 7/ 09( . )
(86) International application number:
PCT/US1986/002129
(87) International publication number:
WO 1987/002499 (23.04.1987 Gazette 1987/09)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 10.10.1985 US 19850784781

(71) Applicant: OPTICON TECHNOLOGY INCORPORATED
Cupertino, CA 95014 (US)

(72) Inventor:
  • ROSE, Dennis, H.
    Claremont, CA 91711 (US)

   


(54) APPARATUS FOR RECORDING AND READING OPTICAL DATA MARKS ON AN OPTICAL MEDIUM