System And Method For Protecting Against Piracy In Optical Storage

摘要

A method (240) for encoding in a holographic disk storage medium is provided. The method (240) includes recording (242) multiple micro-holograms such that the micro-holograms are aligned across a respective plurality of tracks and across a respective plurality of layers at a pre-determined location of an original holographic disk. The method (240) also includes detecting (244) a characteristic waveform signal of a reflected beam from the original holographic disk. The method (240) further includes detecting (246) a second waveform signal from a second holographic disk. The method also includes comparing (248) the second waveform signal with the characteristic waveform signal. The method further includes determining (250) authenticity of the second holographic disk based upon comparison.