Recording medium and hologram reader

Details Recording medium and hologram reader Recording medium and hologram reader

2006-11-28

2006-11-28

Assaf, Fayez G. (Department: 2872)

Optical: systems and elements

Holographic system or element

Authentication

C359S005000, C359S010000, C359S001000

Reexamination Certificate

active

07142336

ABSTRACT:
A recording medium including a storage part to hold a medium identifier intrinsic to each recording medium, and a hologram generated using a reference beam modulated with the medium identifier. Preferably, the hologram is fixed on a surface of the recording medium.

REFERENCES:
patent: 5920058 (1999-07-01), Weber et al.
patent: A 2000-348149 (2000-12-01), None
Yatagai, “Light and Fourier Transform,” published by Asakura Shoten, chapter 7, May 1992.

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