APPARATUS AND METHODS FOR FORMING AND USE WITH VARIABLE PIT DEPTH OPTICAL RECORDING MEDIA - Patent 0888612

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(11)

EP 0 888 612 A1

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(43)	Date of publication:
	07.01.1999 Bulletin 1999/01

(21)	Application number: 97917035.0

(22)	Date of filing: 24.03.1997

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International Patent Classification (IPC):

G11B 7/ 005^{( . )}
G11B 20/ 14^{( . )}
G11B 27/ 30^{( . )}

G11B 20/ 10^{( . )}
G11B 27/ 10^{( . )}
G11B 27/ 36^{( . )}

(86)	International application number:
	PCT/US1997/004941

(87)	International publication number:
	WO 1997/035304 (25.09.1997 Gazette 1997/41)

(84)	Designated Contracting States:
	DE FR GB

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Priority:

22.03.1996 US 19960620196

(71)	Applicant: Calimetrics Inc.
	Emeryville, CA 94608-1936 (US)

(72)	Inventors:
	McDERMOTT, Gregory, A. San Francisco, CA 94117 (US) WONG, Terrence, L. San Francisco, CA 94109 (US) O'NEILL, Michael, P. Richmond, CA 94804 (US) PIETRZYK, Cezary Pinole, CA 94564 (US) JOHNSON, Bruce, V. Berkeley, CA 94704 (US) SPIELMAN, Steven, R. Berkeley, CA 94709 (US) SHAFAAT, Sayed, Tariq Freeland, WA 98249 (US) BUSTILLO, James, M. Castro Valley, CA 94596 (US)

(74)	Representative: Beresford, Keith Denis Lewis, et al
	BERESFORD & Co. 2-5 Warwick Court High Holborn London WC1R 5DJ London WC1R 5DJ (GB)

(54)	APPARATUS AND METHODS FOR FORMING AND USE WITH VARIABLE PIT DEPTH OPTICAL RECORDING MEDIA