Method and apparatus for securely associating an optically...

Information security – Prevention of unauthorized use of data including prevention...

Reexamination Certificate

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C726S031000, C380S201000, C380S203000, C705S052000, C705S057000, C365S110000, C365S126000, C365S127000, C369S013040, C369S112010, C369S275200, C369S285000, C250S201500

Reexamination Certificate

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07124441

ABSTRACT:
A CD-ROM has an obscurable section wherein exists a photosensitive mask material layer or constituent operative to alter the optical properties of areas subjected to prolonged exposure to the CD-ROM read laser radiation. Digital information stored on a CD-ROM is made accessible by use of a password, which is generated from user machine unique information, and which is written on the CD-ROM via selective exposure of the CD-ROM to the radiation used to read the CD-ROM.

REFERENCES:
patent: 5371792 (1994-12-01), Asai et al.
patent: 5527650 (1996-06-01), Yoshinaga et al.
patent: 5596639 (1997-01-01), Kikinis
patent: 5604002 (1997-02-01), Tsujioka et al.
patent: 5646993 (1997-07-01), Aizawa
patent: 5754649 (1998-05-01), Ryan et al.
patent: 5815484 (1998-09-01), Smith et al.
patent: 5963536 (1999-10-01), Vasic et al.
Stellato: “Report on CLEO/Pacific Rim '97” Jul. 1987, US Army Research Office Far East, Sec. 3.

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