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US 6,011,757 AGranted
Optical recording media having increased erasability
OwnerStanford R. Ovshinskyinventor
Life of this patent
Estimating the term…
Abstract
An optical recording medium comprising one or more recording layers. At least one of the recording layers comprising an optical phase-change memory material, the optical phase-change memory material comprising: an optical phase-change alloy; and at least one modifier element, added to the optical phase-change alloy, that increases the erasability of the optical recording medium by at least 3 dB.
Claims15
An optical recording medium comprising one or more recording layers, at least one of said recording layers comprising an optical phase-change memory material comprising:
- an optical phase-change alloy comprising Ge, Sb, Te and Se;
- and
- at least one modifier element selected from the croup consisting of V, Cr, Mn, Fe, Co, Mo, Ru, Rh, Ta, W, Re, Os, and Ir, said at least one modifier element having an atomic percentage between 0.06 and 1.0, said at least one modifier element increasing the erasability of said optical recording medium.
An optical storage and retrieval system comprising:
- an optical drive means with an optical head for reading, writing and erasing optical data to an optical recording medium, said optical recording medium comprising one or more recording layers, at least one of said recording layers comprising optical phase-change memory material comprising:
- an optical phase-change alloy comprising Ge, Sb, Te and Se;
- and
- at least one modifier element selected from the group consisting of V, Cr, Mn, Fe, Co, Mo, Ru, Rh, Ta, W, Re, Os, and Ir, said at least one modifier element having an atomic percentage between 0.06 and 1.0, said at least one modifier element increasing the erasability of said optical recording medium.
1 more element
Dependencies are inferred from the claim text.