Dynamic information storage or retrieval – Storage medium structure – Layered
Patent
1997-07-30
2000-01-04
Davis, David D.
Dynamic information storage or retrieval
Storage medium structure
Layered
G11B 370
Patent
active
060117729
ABSTRACT:
An optical disc having machine-readable, information-encoding features is provided with a barrier layer secured to the disc. This barrier layer is configured to prevent machine-reading of the features. A reading-inhibit agent, included in the disc and activated by removal of the barrier layer, is operative, once activated, to alter the disc to inhibit reading of the disc. Alternately, the barrier layer can be eliminated, and the reading-inhibit agent can be activated by initial reading of the disc, as for example by exposure to optical radiation associated with reading of the disc, or rotation of the disc.
REFERENCES:
patent: 4542288 (1985-09-01), Drexler
patent: 4866769 (1989-09-01), Karp
patent: 4879704 (1989-11-01), Takagi et al.
patent: 4975898 (1990-12-01), Yoshida
patent: 5311494 (1994-05-01), Sugita et al.
patent: 5418852 (1995-05-01), Itami et al.
patent: 5426625 (1995-06-01), Bui et al.
patent: 5453968 (1995-09-01), Veldhuis et al.
patent: 5461239 (1995-10-01), Atherton
patent: 5473584 (1995-12-01), Oshima
patent: 5513169 (1996-04-01), Fite et al.
patent: 5513260 (1996-04-01), Ryan
patent: 5570379 (1996-10-01), Sasaki et al.
patent: 5574787 (1996-11-01), Ryan
patent: 5592454 (1997-01-01), Tobita et al.
patent: 5629914 (1997-05-01), Clark et al.
patent: 5636292 (1997-06-01), Rhoads
patent: 5680383 (1997-10-01), Clark et al.
patent: 5815484 (1998-09-01), Smith
Jun'etsu Seto, Research Center, Sony Corporation, "Photochromic Dyes," pp. 71-88.
Richard M. Tarkka et al., "Holographic Storage in a near-ir sensitive photochromic dye," Optics Communications 109 (1994) 54-58.
Fumio Matsui, Corporate Research and Development Laboratory, Pioneer Electronic Corporation, "Optical Recording Systems," pp. 117-140.
U.S. application No. 60/009,325, Smith, filed Dec. 28, 1995.
Carlson Eric J.
Ehntholt Daniel J.
Marmo Christopher J.
Powell John R.
Rollhaus Philip E.
Davis David D.
SpectraDisc Corporation
LandOfFree
Machine-readable optical disc with reading-inhibit agent does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Machine-readable optical disc with reading-inhibit agent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine-readable optical disc with reading-inhibit agent will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1078006