Patent Number: 6,254,957

Title: Rewritable optical information medium

Abstract: A rewritable optical information medium includes a substrate coated with two carbide layers, a phase-change recording layer between two carbide layers, and a light-absorptive layer of a material like Si, Ge, Mo, or W to slow the cooling when scanned with laser light so that the medium can be used for high data rate recording. The material is capable of a user data bit rate of 50 Mbit/s.

Inventors: Zhou; Guo-Fu (Eindhoven, NL)

Assignee: U.S. Philips Corporation

International Classification: G11B 7/257 (20060101); G11B 7/24 (20060101); G11B 7/00 (20060101); G11B 7/006 (20060101); B32B 003/02 ()

Expiration Date: 07/03/2018