Rewritable optical information medium
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United States of America Patent
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Jul 3, 2001
Grant Date -
N/A
app pub date -
Apr 20, 1999
filing date -
Apr 20, 1998
priority date (Note) -
Expired
status (Latency Note)
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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.
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