Storage Media Access Control Method and System

• US 20080066090A1
• Filed: 10/24/2007
• Published: 03/13/2008
• Est. Priority Date: 06/30/2000
• Status: Abandoned Application

• Current Assignee: Verification Technologies, Inc. (Sun Chemical, Inc.)
• Original Assignee: Verification Technologies, Inc. (Sun Chemical, Inc.)
• Inventors: Drew, Jeffrey, Goyette, Donald, Vig, Rakesh, Selinfreund, Richard
• Application Number:
  US11/923,208
• Publication Number:
  US 20080066090A1
• Time in Patent Office: Days
• US Class Current: 720/718
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 19/122 involving the detection of an identification or authentication mark record carriers indicating unauthorised or prior use G11B23/28
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00586 said format change concerning the physical format of the recording medium
• CPC Class Codes: G11B 20/00608 wherein the material that the record carrier is made of is altered, e.g. adding reactive dyes that alter the optical properties of a disc after prolonged exposure to light or air
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/00876 wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
• CPC Class Codes: G11B 20/00927 wherein said defects or errors are generated on purpose, e.g. intended scratches
• CPC Class Codes: G11B 2007/24312 group 14 elements (e.g. Si, Ge, Sn)
• CPC Class Codes: G11B 2007/24314 group 15 elements (e.g. Sb, Bi)
• CPC Class Codes: G11B 2007/24316 group 16 elements (i.e. chalcogenides, Se, Te)
• CPC Class Codes: G11B 2007/2571 containing group 14 elements except carbon (Si, Ge, Sn, Pb)
• CPC Class Codes: G11B 23/28 Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs write-protect devices for tapes G11B23/042, G11B23/08714; dummy cassettes for locking in the drive G11B33/005
• CPC Class Codes: G11B 23/281 by changing the physical properties of the record carrier
• CPC Class Codes: G11B 7/00736 Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082
• CPC Class Codes: G11B 7/0079 Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
• CPC Class Codes: G11B 7/013 for discrete information, i.e. where each information unit is stored in a distinct discrete location , e.g. digital information formats within a data block or sector
• CPC Class Codes: G11B 7/24 Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the arrangement of information on the carrier G11B7/007
• CPC Class Codes: G11B 7/243 comprising inorganic materials only, e.g. ablative layers
• CPC Class Codes: G11B 7/2433 : Metals or elements of Groups 13, 14, 15 or 16 of the Periodic Table, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
• CPC Class Codes: G11B 7/244 : comprising organic materials only
• CPC Class Codes: G11B 7/246 : containing dyes
• CPC Class Codes: G11B 7/2472 : cyanine
• CPC Class Codes: G11B 7/252 : of layers other than recording layers
• CPC Class Codes: G11B 7/2534 : polycarbonates [PC]
• CPC Class Codes: G11B 7/257 : of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
• CPC Class Codes: G11B 7/2572 : consisting essentially of organic materials
• CPC Class Codes: G11B 7/2578 : consisting essentially of inorganic materials
• CPC Class Codes: G11B 7/26 : Apparatus or processes specially adapted for the manufacture of record carriers
• CPC Class Codes: G11B 7/261 : Preparing a master, e.g. exposing photoresist, electroforming
• CPC Class Codes: G11B 7/266 : Sputtering or spin-coating layers sputtering in general C23C14/24; spin-coating in general B05D1/005
• CPC Class Codes: Y10T 428/21 : Circular sheet or circular blank
• CPC Class Codes: Y10T 428/24802 : Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/31507 : Of polycarbonate

Abstract

A computer-readable medium having material at a select position therein and containing instructions for controlling an optical reader to cause the optical reader to re-read the position having the material one or more times to elicit a measurable parameter at such position.

Claims

1-3. -3. (canceled)

4. An optical recording medium readable by an optical reader, said optical recording medium having optical data structures thereon and comprising a light-changeable composition selectively placed in one or more predetermined positions with respect to one or more of the optical data structures, wherein the light-changeable composition is comprised in a polymeric material that is applied or adhered to one or more surfaces of said medium.

5. The optical recording medium described in claim 4 wherein the polymeric material comprises a label.

6. The optical recording medium described in claim 4 wherein the polymeric material is an optically clear material deposited on a layer or a surface of the medium.

7. The optical recording medium described in claim 4 wherein the light-changeable composition is a reversible light-changeable composition.

8. The optical recording medium described in claim 4 wherein the medium contains instruction for causing the optical reader to determine the position(s) of the light-changeable composition with respect to the one or more optical data structures such that the one or more optical data structures is read only if the position(s) of the light-changeable composition with respect to the one or more optical data structures is in accord with reference information.

9. The optical recording medium described in claim 4 wherein the medium is a writable or recordable optical recording medium and the light-changeable composition is placed in a phase change layer such that the light-changeable composition interferes with the read of data in the medium and any change in said data.

10. The optical recording medium described in claim 7 wherein the data structures comprise pits and lands, and wherein the light-changeable composition is a delayed light-changeable composition placed at one or more pits, one or more lands, or both.

11. The optical recording medium described in claim 10 wherein the delayed light-changeable composition causes erroneous reading of a pit as a land or a reading of a land as a pit upon reread after delay.

12. A method of manufacturing an optical recording medium having optical data structures thereon, the method comprising the steps of:

a) premastering of data;

b) formation of a glass master according to the premastered data;

c) electroforming of the data-bearing glass master to provide a father disc;

d) formation of a mother disc from the father disc;

e) production of one or more children discs from the mother disc bearing optical duplicates of the father disc, thereby providing one or more stampers;

f) injection molding or stamping using a father disc or a stamper to provide the medium;

g) while the medium is still fixed in the mold or in the stamper selectively imprinting a non-embossed surface of the medium with the light-changeable composition in one or more predetermined positions with respect to one or more of the optical data structures;

h) buffering;

i) metal sputtering the data-bearing surface;

j) affixing a second polycarbonate substrate or protective coating over the surface bearing the light-changeable composition;

k) spin coating a protective coating; and

l) UV curing.

13. The method described in claim 12 wherein imprinting comprises gravure, laser printing, Mylar screen-printing, drop-on-demand printing;

or CIJ.

14. The method described in claim 12 wherein imprinting comprises drop-on-demand printing.

15. The method described in claim 12 wherein imprinting the light-changeable composition comprises spin coating thereof.

16. A method of manufacturing a copy-protected optical recording medium having optical data structures thereon, comprising:

providing an optical recording medium having at least one data structure comprising one or more of pits, lands, or deformations; and

placing a light-changeable material effective to inhibit or prevent unauthorized copying of a data structure at one or more specific locations with respect to at least one data structure thereon.

17. The method described in claim 16 wherein the placing comprises a) formulating the light-changeable material with a UV cure resin or with a photoinitiator, wherein the cure resin or photoinitiator may be cured by irradiation with UVA, UVB, or UVC radiation;

b) curing the resin at one or more precise locations on the medium by irradiation with light source producing UVA, UVB, or UVC radiation; and

c) rinsing off any uncured resin.

18. The method described in claim 16 wherein the specific locations are specified by means of a photomask.

19. The method described in claim 16 wherein the light-changeable material comprises quantum dots, nanocrystals, or fluorescent microspheres.

20. An optical recording medium readable by an optical reader, said optical recording medium having optical data structures thereon and comprising a light-changeable composition selectively placed in one or more predetermined positions with respect to one or more of the optical data structures, wherein the light-changeable composition is applied or adhered to one or more surfaces of said medium.

21. The optical recording medium described in claim 20 wherein the light-changeable material is selected and is registered with said one or more optical data structures, wherein the optical data structures comprise pits and/or lands, and wherein the light-changeable composition erroneously causes reading of at least one pit as a land and a reading of at least one land as a pit.

22. The optical recording medium described in claim 20 wherein the medium is a writable or recordable optical recording medium and the light-changeable material is placed in a phase change layer such that the light-changeable material interferes with the read of data in a substrate of the medium and any change in said substrate data.