Invention Grant
US08110272B2 Information recording medium 失效
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Information recording medium
Abstract:
An information recording medium (100) is provided with at least a first recording layer (101), which accepts a first laser beam having a first wavelength, can display a visible display pattern (pit art), and has a first pit formed thereon for reading information; and a second recording layer (102), which accepts a second laser beam having a second wavelength and can record second information by forming a second pit.
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Information query
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